net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  */
   7
   8 #include <linux/if.h>
   9 #include <linux/module.h>
  10 #include <linux/err.h>
  11 #include <linux/slab.h>
  12 #include <linux/list.h>
  13 #include <linux/if_ether.h>
  14 #include <linux/ieee80211.h>
  15 #include <linux/nl80211.h>
  16 #include <linux/rtnetlink.h>
  17 #include <linux/netlink.h>
  18 #include <linux/etherdevice.h>
  19 #include <net/net_namespace.h>
  20 #include <net/genetlink.h>
  21 #include <net/cfg80211.h>
  22 #include <net/sock.h>
  23 #include <net/inet_connection_sock.h>
  24 #include "core.h"
  25 #include "nl80211.h"
  26 #include "reg.h"
  27 #include "rdev-ops.h"
  28
  29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  30                                    struct genl_info *info,
  31                                    struct cfg80211_crypto_settings *settings,
  32                                    int cipher_limit);
  33
  34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  35                             struct genl_info *info);
  36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  37                               struct genl_info *info);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam = {
  41         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  42         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  43         .hdrsize = 0,                   /* no private header */
  44         .version = 1,                   /* no particular meaning now */
  45         .maxattr = NL80211_ATTR_MAX,
  46         .netnsok = true,
  47         .pre_doit = nl80211_pre_doit,
  48         .post_doit = nl80211_post_doit,
  49 };
  50
  51 /* multicast groups */
  52 enum nl80211_multicast_groups {
  53         NL80211_MCGRP_CONFIG,
  54         NL80211_MCGRP_SCAN,
  55         NL80211_MCGRP_REGULATORY,
  56         NL80211_MCGRP_MLME,
  57         NL80211_MCGRP_VENDOR,
  58         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  59 };
  60
  61 static const struct genl_multicast_group nl80211_mcgrps[] = {
  62         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  63         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  64         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  65         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  66         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  67 #ifdef CONFIG_NL80211_TESTMODE
  68         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  69 #endif
  70 };
  71
  72 /* returns ERR_PTR values */
  73 static struct wireless_dev *
  74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  75 {
  76         struct cfg80211_registered_device *rdev;
  77         struct wireless_dev *result = NULL;
  78         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  79         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  80         u64 wdev_id;
  81         int wiphy_idx = -1;
  82         int ifidx = -1;
  83
  84         ASSERT_RTNL();
  85
  86         if (!have_ifidx && !have_wdev_id)
  87                 return ERR_PTR(-EINVAL);
  88
  89         if (have_ifidx)
  90                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  91         if (have_wdev_id) {
  92                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  93                 wiphy_idx = wdev_id >> 32;
  94         }
  95
  96         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  97                 struct wireless_dev *wdev;
  98
  99                 if (wiphy_net(&rdev->wiphy) != netns)
 100                         continue;
 101
 102                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 103                         continue;
 104
 105                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 106                         if (have_ifidx && wdev->netdev &&
 107                             wdev->netdev->ifindex == ifidx) {
 108                                 result = wdev;
 109                                 break;
 110                         }
 111                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 112                                 result = wdev;
 113                                 break;
 114                         }
 115                 }
 116
 117                 if (result)
 118                         break;
 119         }
 120
 121         if (result)
 122                 return result;
 123         return ERR_PTR(-ENODEV);
 124 }
 125
 126 static struct cfg80211_registered_device *
 127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 128 {
 129         struct cfg80211_registered_device *rdev = NULL, *tmp;
 130         struct net_device *netdev;
 131
 132         ASSERT_RTNL();
 133
 134         if (!attrs[NL80211_ATTR_WIPHY] &&
 135             !attrs[NL80211_ATTR_IFINDEX] &&
 136             !attrs[NL80211_ATTR_WDEV])
 137                 return ERR_PTR(-EINVAL);
 138
 139         if (attrs[NL80211_ATTR_WIPHY])
 140                 rdev = cfg80211_rdev_by_wiphy_idx(
 141                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 142
 143         if (attrs[NL80211_ATTR_WDEV]) {
 144                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 145                 struct wireless_dev *wdev;
 146                 bool found = false;
 147
 148                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 149                 if (tmp) {
 150                         /* make sure wdev exists */
 151                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 152                                 if (wdev->identifier != (u32)wdev_id)
 153                                         continue;
 154                                 found = true;
 155                                 break;
 156                         }
 157
 158                         if (!found)
 159                                 tmp = NULL;
 160
 161                         if (rdev && tmp != rdev)
 162                                 return ERR_PTR(-EINVAL);
 163                         rdev = tmp;
 164                 }
 165         }
 166
 167         if (attrs[NL80211_ATTR_IFINDEX]) {
 168                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 169                 netdev = __dev_get_by_index(netns, ifindex);
 170                 if (netdev) {
 171                         if (netdev->ieee80211_ptr)
 172                                 tmp = wiphy_to_rdev(
 173                                         netdev->ieee80211_ptr->wiphy);
 174                         else
 175                                 tmp = NULL;
 176
 177                         /* not wireless device -- return error */
 178                         if (!tmp)
 179                                 return ERR_PTR(-EINVAL);
 180
 181                         /* mismatch -- return error */
 182                         if (rdev && tmp != rdev)
 183                                 return ERR_PTR(-EINVAL);
 184
 185                         rdev = tmp;
 186                 }
 187         }
 188
 189         if (!rdev)
 190                 return ERR_PTR(-ENODEV);
 191
 192         if (netns != wiphy_net(&rdev->wiphy))
 193                 return ERR_PTR(-ENODEV);
 194
 195         return rdev;
 196 }
 197
 198 /*
 199  * This function returns a pointer to the driver
 200  * that the genl_info item that is passed refers to.
 201  *
 202  * The result of this can be a PTR_ERR and hence must
 203  * be checked with IS_ERR() for errors.
 204  */
 205 static struct cfg80211_registered_device *
 206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 207 {
 208         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 209 }
 210
 211 /* policy for the attributes */
 212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 213         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 214         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 215                                       .len = 20-1 },
 216         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 217
 218         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 219         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 220         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 221         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 222         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 223
 224         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 225         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 226         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 227         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 229         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 230
 231         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 232         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 233         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 234
 235         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 236         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 237
 238         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 239         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 240                                     .len = WLAN_MAX_KEY_LEN },
 241         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 242         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 243         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 244         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 245         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 246
 247         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 248         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 249         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 250                                        .len = IEEE80211_MAX_DATA_LEN },
 251         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 252                                        .len = IEEE80211_MAX_DATA_LEN },
 253         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 254         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 256         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 257                                                .len = NL80211_MAX_SUPP_RATES },
 258         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 259         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 260         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 261         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 262                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 263         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 264
 265         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 266         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 267
 268         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 269         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 270         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 271         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 272                                            .len = NL80211_MAX_SUPP_RATES },
 273         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 274
 275         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 276         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 277
 278         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 279
 280         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 281         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 282                               .len = IEEE80211_MAX_DATA_LEN },
 283         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 284         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 285
 286         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 287                                 .len = IEEE80211_MAX_SSID_LEN },
 288         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 289         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 290         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 292         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 293         [NL80211_ATTR_STA_FLAGS2] = {
 294                 .len = sizeof(struct nl80211_sta_flag_update),
 295         },
 296         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 297         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 299         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 300         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 301         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 302         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 303         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 304         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 305                                  .len = WLAN_PMKID_LEN },
 306         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 307         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 308         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 309         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 310                                  .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 312         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 313         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 314         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 315         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 316         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 317         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 318         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 319         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 320         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 321         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 322         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 323         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 324         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 325         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 326         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 327         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 328         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 329         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 330         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 331                                          .len = IEEE80211_MAX_DATA_LEN },
 332         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 333                                          .len = IEEE80211_MAX_DATA_LEN },
 334         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 336         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 337         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 338         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 339         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 340         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 341         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 342         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 343         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 345                                       .len = IEEE80211_MAX_DATA_LEN },
 346         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 347         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 348         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 349                 .len = NL80211_HT_CAPABILITY_LEN
 350         },
 351         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 352         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 353         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 354         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 355         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 356         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 357         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 358         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 359         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 360         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 361         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 362         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 363         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 364         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 365         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 366         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 367         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 368                 .len = NL80211_VHT_CAPABILITY_LEN,
 369         },
 370         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 371         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 372                                   .len = IEEE80211_MAX_DATA_LEN },
 373         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 374         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 375         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 376         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 377         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 378         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 379         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 380         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 381         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 382         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 383         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 384         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 385         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 386         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 387                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 388         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 389         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 390         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 391         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 392         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 393         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 395         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 396         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 397         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 398         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 399         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 400 };
 401
 402 /* policy for the key attributes */
 403 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 404         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 405         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 406         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 407         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 408         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 409         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 410         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 411         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 412 };
 413
 414 /* policy for the key default flags */
 415 static const struct nla_policy
 416 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 417         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 418         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 419 };
 420
 421 /* policy for WoWLAN attributes */
 422 static const struct nla_policy
 423 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 424         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 425         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 426         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 427         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 428         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 431         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 432         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 433         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 434 };
 435
 436 static const struct nla_policy
 437 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 438         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 439         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 440         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 441         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 442         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 443         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 444         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 445                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 446         },
 447         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 448                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 449         },
 450         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 451         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 452         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 453 };
 454
 455 /* policy for coalesce rule attributes */
 456 static const struct nla_policy
 457 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 458         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 459         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 460         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 461 };
 462
 463 /* policy for GTK rekey offload attributes */
 464 static const struct nla_policy
 465 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 466         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 467         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 468         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 469 };
 470
 471 static const struct nla_policy
 472 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 473         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 474                                                  .len = IEEE80211_MAX_SSID_LEN },
 475         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 476 };
 477
 478 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 479                                      struct netlink_callback *cb,
 480                                      struct cfg80211_registered_device **rdev,
 481                                      struct wireless_dev **wdev)
 482 {
 483         int err;
 484
 485         rtnl_lock();
 486
 487         if (!cb->args[0]) {
 488                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 489                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 490                                   nl80211_policy);
 491                 if (err)
 492                         goto out_unlock;
 493
 494                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 495                                                    nl80211_fam.attrbuf);
 496                 if (IS_ERR(*wdev)) {
 497                         err = PTR_ERR(*wdev);
 498                         goto out_unlock;
 499                 }
 500                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 501                 /* 0 is the first index - add 1 to parse only once */
 502                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 503                 cb->args[1] = (*wdev)->identifier;
 504         } else {
 505                 /* subtract the 1 again here */
 506                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 507                 struct wireless_dev *tmp;
 508
 509                 if (!wiphy) {
 510                         err = -ENODEV;
 511                         goto out_unlock;
 512                 }
 513                 *rdev = wiphy_to_rdev(wiphy);
 514                 *wdev = NULL;
 515
 516                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 517                         if (tmp->identifier == cb->args[1]) {
 518                                 *wdev = tmp;
 519                                 break;
 520                         }
 521                 }
 522
 523                 if (!*wdev) {
 524                         err = -ENODEV;
 525                         goto out_unlock;
 526                 }
 527         }
 528
 529         return 0;
 530  out_unlock:
 531         rtnl_unlock();
 532         return err;
 533 }
 534
 535 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 536 {
 537         rtnl_unlock();
 538 }
 539
 540 /* IE validation */
 541 static bool is_valid_ie_attr(const struct nlattr *attr)
 542 {
 543         const u8 *pos;
 544         int len;
 545
 546         if (!attr)
 547                 return true;
 548
 549         pos = nla_data(attr);
 550         len = nla_len(attr);
 551
 552         while (len) {
 553                 u8 elemlen;
 554
 555                 if (len < 2)
 556                         return false;
 557                 len -= 2;
 558
 559                 elemlen = pos[1];
 560                 if (elemlen > len)
 561                         return false;
 562
 563                 len -= elemlen;
 564                 pos += 2 + elemlen;
 565         }
 566
 567         return true;
 568 }
 569
 570 /* message building helper */
 571 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 572                                    int flags, u8 cmd)
 573 {
 574         /* since there is no private header just add the generic one */
 575         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 576 }
 577
 578 static int nl80211_msg_put_channel(struct sk_buff *msg,
 579                                    struct ieee80211_channel *chan,
 580                                    bool large)
 581 {
 582         /* Some channels must be completely excluded from the
 583          * list to protect old user-space tools from breaking
 584          */
 585         if (!large && chan->flags &
 586             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 587                 return 0;
 588
 589         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 590                         chan->center_freq))
 591                 goto nla_put_failure;
 592
 593         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 594             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 595                 goto nla_put_failure;
 596         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 597                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 598                         goto nla_put_failure;
 599                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 600                         goto nla_put_failure;
 601         }
 602         if (chan->flags & IEEE80211_CHAN_RADAR) {
 603                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 604                         goto nla_put_failure;
 605                 if (large) {
 606                         u32 time;
 607
 608                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 609
 610                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 611                                         chan->dfs_state))
 612                                 goto nla_put_failure;
 613                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 614                                         time))
 615                                 goto nla_put_failure;
 616                         if (nla_put_u32(msg,
 617                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 618                                         chan->dfs_cac_ms))
 619                                 goto nla_put_failure;
 620                 }
 621         }
 622
 623         if (large) {
 624                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 625                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 626                         goto nla_put_failure;
 627                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 628                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 629                         goto nla_put_failure;
 630                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 631                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 632                         goto nla_put_failure;
 633                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 634                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 635                         goto nla_put_failure;
 636                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 637                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 638                         goto nla_put_failure;
 639                 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
 640                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
 641                         goto nla_put_failure;
 642                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 643                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 644                         goto nla_put_failure;
 645                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 646                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 647                         goto nla_put_failure;
 648         }
 649
 650         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 651                         DBM_TO_MBM(chan->max_power)))
 652                 goto nla_put_failure;
 653
 654         return 0;
 655
 656  nla_put_failure:
 657         return -ENOBUFS;
 658 }
 659
 660 /* netlink command implementations */
 661
 662 struct key_parse {
 663         struct key_params p;
 664         int idx;
 665         int type;
 666         bool def, defmgmt;
 667         bool def_uni, def_multi;
 668 };
 669
 670 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 671 {
 672         struct nlattr *tb[NL80211_KEY_MAX + 1];
 673         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 674                                    nl80211_key_policy);
 675         if (err)
 676                 return err;
 677
 678         k->def = !!tb[NL80211_KEY_DEFAULT];
 679         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 680
 681         if (k->def) {
 682                 k->def_uni = true;
 683                 k->def_multi = true;
 684         }
 685         if (k->defmgmt)
 686                 k->def_multi = true;
 687
 688         if (tb[NL80211_KEY_IDX])
 689                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 690
 691         if (tb[NL80211_KEY_DATA]) {
 692                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 693                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 694         }
 695
 696         if (tb[NL80211_KEY_SEQ]) {
 697                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 698                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 699         }
 700
 701         if (tb[NL80211_KEY_CIPHER])
 702                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 703
 704         if (tb[NL80211_KEY_TYPE]) {
 705                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 706                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 707                         return -EINVAL;
 708         }
 709
 710         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 711                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 712                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 713                                        tb[NL80211_KEY_DEFAULT_TYPES],
 714                                        nl80211_key_default_policy);
 715                 if (err)
 716                         return err;
 717
 718                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 719                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 720         }
 721
 722         return 0;
 723 }
 724
 725 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 726 {
 727         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 728                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 729                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 730         }
 731
 732         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 733                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 734                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 735         }
 736
 737         if (info->attrs[NL80211_ATTR_KEY_IDX])
 738                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 739
 740         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 741                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 742
 743         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 744         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 745
 746         if (k->def) {
 747                 k->def_uni = true;
 748                 k->def_multi = true;
 749         }
 750         if (k->defmgmt)
 751                 k->def_multi = true;
 752
 753         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 754                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 755                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 756                         return -EINVAL;
 757         }
 758
 759         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 760                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 761                 int err = nla_parse_nested(
 762                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 763                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 764                                 nl80211_key_default_policy);
 765                 if (err)
 766                         return err;
 767
 768                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 769                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 776 {
 777         int err;
 778
 779         memset(k, 0, sizeof(*k));
 780         k->idx = -1;
 781         k->type = -1;
 782
 783         if (info->attrs[NL80211_ATTR_KEY])
 784                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 785         else
 786                 err = nl80211_parse_key_old(info, k);
 787
 788         if (err)
 789                 return err;
 790
 791         if (k->def && k->defmgmt)
 792                 return -EINVAL;
 793
 794         if (k->defmgmt) {
 795                 if (k->def_uni || !k->def_multi)
 796                         return -EINVAL;
 797         }
 798
 799         if (k->idx != -1) {
 800                 if (k->defmgmt) {
 801                         if (k->idx < 4 || k->idx > 5)
 802                                 return -EINVAL;
 803                 } else if (k->def) {
 804                         if (k->idx < 0 || k->idx > 3)
 805                                 return -EINVAL;
 806                 } else {
 807                         if (k->idx < 0 || k->idx > 5)
 808                                 return -EINVAL;
 809                 }
 810         }
 811
 812         return 0;
 813 }
 814
 815 static struct cfg80211_cached_keys *
 816 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 817                        struct nlattr *keys, bool *no_ht)
 818 {
 819         struct key_parse parse;
 820         struct nlattr *key;
 821         struct cfg80211_cached_keys *result;
 822         int rem, err, def = 0;
 823
 824         result = kzalloc(sizeof(*result), GFP_KERNEL);
 825         if (!result)
 826                 return ERR_PTR(-ENOMEM);
 827
 828         result->def = -1;
 829         result->defmgmt = -1;
 830
 831         nla_for_each_nested(key, keys, rem) {
 832                 memset(&parse, 0, sizeof(parse));
 833                 parse.idx = -1;
 834
 835                 err = nl80211_parse_key_new(key, &parse);
 836                 if (err)
 837                         goto error;
 838                 err = -EINVAL;
 839                 if (!parse.p.key)
 840                         goto error;
 841                 if (parse.idx < 0 || parse.idx > 4)
 842                         goto error;
 843                 if (parse.def) {
 844                         if (def)
 845                                 goto error;
 846                         def = 1;
 847                         result->def = parse.idx;
 848                         if (!parse.def_uni || !parse.def_multi)
 849                                 goto error;
 850                 } else if (parse.defmgmt)
 851                         goto error;
 852                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 853                                                      parse.idx, false, NULL);
 854                 if (err)
 855                         goto error;
 856                 result->params[parse.idx].cipher = parse.p.cipher;
 857                 result->params[parse.idx].key_len = parse.p.key_len;
 858                 result->params[parse.idx].key = result->data[parse.idx];
 859                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 860
 861                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 862                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 863                         if (no_ht)
 864                                 *no_ht = true;
 865                 }
 866         }
 867
 868         return result;
 869  error:
 870         kfree(result);
 871         return ERR_PTR(err);
 872 }
 873
 874 static int nl80211_key_allowed(struct wireless_dev *wdev)
 875 {
 876         ASSERT_WDEV_LOCK(wdev);
 877
 878         switch (wdev->iftype) {
 879         case NL80211_IFTYPE_AP:
 880         case NL80211_IFTYPE_AP_VLAN:
 881         case NL80211_IFTYPE_P2P_GO:
 882         case NL80211_IFTYPE_MESH_POINT:
 883                 break;
 884         case NL80211_IFTYPE_ADHOC:
 885         case NL80211_IFTYPE_STATION:
 886         case NL80211_IFTYPE_P2P_CLIENT:
 887                 if (!wdev->current_bss)
 888                         return -ENOLINK;
 889                 break;
 890         case NL80211_IFTYPE_UNSPECIFIED:
 891         case NL80211_IFTYPE_OCB:
 892         case NL80211_IFTYPE_MONITOR:
 893         case NL80211_IFTYPE_P2P_DEVICE:
 894         case NL80211_IFTYPE_WDS:
 895         case NUM_NL80211_IFTYPES:
 896                 return -EINVAL;
 897         }
 898
 899         return 0;
 900 }
 901
 902 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 903                                                         struct nlattr *tb)
 904 {
 905         struct ieee80211_channel *chan;
 906
 907         if (tb == NULL)
 908                 return NULL;
 909         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 910         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 911                 return NULL;
 912         return chan;
 913 }
 914
 915 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 916 {
 917         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 918         int i;
 919
 920         if (!nl_modes)
 921                 goto nla_put_failure;
 922
 923         i = 0;
 924         while (ifmodes) {
 925                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 926                         goto nla_put_failure;
 927                 ifmodes >>= 1;
 928                 i++;
 929         }
 930
 931         nla_nest_end(msg, nl_modes);
 932         return 0;
 933
 934 nla_put_failure:
 935         return -ENOBUFS;
 936 }
 937
 938 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 939                                           struct sk_buff *msg,
 940                                           bool large)
 941 {
 942         struct nlattr *nl_combis;
 943         int i, j;
 944
 945         nl_combis = nla_nest_start(msg,
 946                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 947         if (!nl_combis)
 948                 goto nla_put_failure;
 949
 950         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 951                 const struct ieee80211_iface_combination *c;
 952                 struct nlattr *nl_combi, *nl_limits;
 953
 954                 c = &wiphy->iface_combinations[i];
 955
 956                 nl_combi = nla_nest_start(msg, i + 1);
 957                 if (!nl_combi)
 958                         goto nla_put_failure;
 959
 960                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 961                 if (!nl_limits)
 962                         goto nla_put_failure;
 963
 964                 for (j = 0; j < c->n_limits; j++) {
 965                         struct nlattr *nl_limit;
 966
 967                         nl_limit = nla_nest_start(msg, j + 1);
 968                         if (!nl_limit)
 969                                 goto nla_put_failure;
 970                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 971                                         c->limits[j].max))
 972                                 goto nla_put_failure;
 973                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 974                                                 c->limits[j].types))
 975                                 goto nla_put_failure;
 976                         nla_nest_end(msg, nl_limit);
 977                 }
 978
 979                 nla_nest_end(msg, nl_limits);
 980
 981                 if (c->beacon_int_infra_match &&
 982                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 983                         goto nla_put_failure;
 984                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 985                                 c->num_different_channels) ||
 986                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 987                                 c->max_interfaces))
 988                         goto nla_put_failure;
 989                 if (large &&
 990                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 991                                 c->radar_detect_widths) ||
 992                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 993                                 c->radar_detect_regions)))
 994                         goto nla_put_failure;
 995
 996                 nla_nest_end(msg, nl_combi);
 997         }
 998
 999         nla_nest_end(msg, nl_combis);
1000
1001         return 0;
1002 nla_put_failure:
1003         return -ENOBUFS;
1004 }
1005
1006 #ifdef CONFIG_PM
1007 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1008                                         struct sk_buff *msg)
1009 {
1010         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1011         struct nlattr *nl_tcp;
1012
1013         if (!tcp)
1014                 return 0;
1015
1016         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1017         if (!nl_tcp)
1018                 return -ENOBUFS;
1019
1020         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1021                         tcp->data_payload_max))
1022                 return -ENOBUFS;
1023
1024         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1025                         tcp->data_payload_max))
1026                 return -ENOBUFS;
1027
1028         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1029                 return -ENOBUFS;
1030
1031         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1032                                 sizeof(*tcp->tok), tcp->tok))
1033                 return -ENOBUFS;
1034
1035         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1036                         tcp->data_interval_max))
1037                 return -ENOBUFS;
1038
1039         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1040                         tcp->wake_payload_max))
1041                 return -ENOBUFS;
1042
1043         nla_nest_end(msg, nl_tcp);
1044         return 0;
1045 }
1046
1047 static int nl80211_send_wowlan(struct sk_buff *msg,
1048                                struct cfg80211_registered_device *rdev,
1049                                bool large)
1050 {
1051         struct nlattr *nl_wowlan;
1052
1053         if (!rdev->wiphy.wowlan)
1054                 return 0;
1055
1056         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1057         if (!nl_wowlan)
1058                 return -ENOBUFS;
1059
1060         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1061              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1062             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1063              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1064             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1065              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1066             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1067              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1068             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1069              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1070             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1071              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1072             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1073              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1074             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1075              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1076                 return -ENOBUFS;
1077
1078         if (rdev->wiphy.wowlan->n_patterns) {
1079                 struct nl80211_pattern_support pat = {
1080                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1081                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1082                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1083                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1084                 };
1085
1086                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1087                             sizeof(pat), &pat))
1088                         return -ENOBUFS;
1089         }
1090
1091         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1092                 return -ENOBUFS;
1093
1094         /* TODO: send wowlan net detect */
1095
1096         nla_nest_end(msg, nl_wowlan);
1097
1098         return 0;
1099 }
1100 #endif
1101
1102 static int nl80211_send_coalesce(struct sk_buff *msg,
1103                                  struct cfg80211_registered_device *rdev)
1104 {
1105         struct nl80211_coalesce_rule_support rule;
1106
1107         if (!rdev->wiphy.coalesce)
1108                 return 0;
1109
1110         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1111         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1112         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1113         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1114         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1115         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1116
1117         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1118                 return -ENOBUFS;
1119
1120         return 0;
1121 }
1122
1123 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1124                                       struct ieee80211_supported_band *sband)
1125 {
1126         struct nlattr *nl_rates, *nl_rate;
1127         struct ieee80211_rate *rate;
1128         int i;
1129
1130         /* add HT info */
1131         if (sband->ht_cap.ht_supported &&
1132             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1133                      sizeof(sband->ht_cap.mcs),
1134                      &sband->ht_cap.mcs) ||
1135              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1136                          sband->ht_cap.cap) ||
1137              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1138                         sband->ht_cap.ampdu_factor) ||
1139              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1140                         sband->ht_cap.ampdu_density)))
1141                 return -ENOBUFS;
1142
1143         /* add VHT info */
1144         if (sband->vht_cap.vht_supported &&
1145             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1146                      sizeof(sband->vht_cap.vht_mcs),
1147                      &sband->vht_cap.vht_mcs) ||
1148              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1149                          sband->vht_cap.cap)))
1150                 return -ENOBUFS;
1151
1152         /* add bitrates */
1153         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1154         if (!nl_rates)
1155                 return -ENOBUFS;
1156
1157         for (i = 0; i < sband->n_bitrates; i++) {
1158                 nl_rate = nla_nest_start(msg, i);
1159                 if (!nl_rate)
1160                         return -ENOBUFS;
1161
1162                 rate = &sband->bitrates[i];
1163                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1164                                 rate->bitrate))
1165                         return -ENOBUFS;
1166                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1167                     nla_put_flag(msg,
1168                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1169                         return -ENOBUFS;
1170
1171                 nla_nest_end(msg, nl_rate);
1172         }
1173
1174         nla_nest_end(msg, nl_rates);
1175
1176         return 0;
1177 }
1178
1179 static int
1180 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1181                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1182 {
1183         u16 stypes;
1184         struct nlattr *nl_ftypes, *nl_ifs;
1185         enum nl80211_iftype ift;
1186         int i;
1187
1188         if (!mgmt_stypes)
1189                 return 0;
1190
1191         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1192         if (!nl_ifs)
1193                 return -ENOBUFS;
1194
1195         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1196                 nl_ftypes = nla_nest_start(msg, ift);
1197                 if (!nl_ftypes)
1198                         return -ENOBUFS;
1199                 i = 0;
1200                 stypes = mgmt_stypes[ift].tx;
1201                 while (stypes) {
1202                         if ((stypes & 1) &&
1203                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1204                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1205                                 return -ENOBUFS;
1206                         stypes >>= 1;
1207                         i++;
1208                 }
1209                 nla_nest_end(msg, nl_ftypes);
1210         }
1211
1212         nla_nest_end(msg, nl_ifs);
1213
1214         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1215         if (!nl_ifs)
1216                 return -ENOBUFS;
1217
1218         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1219                 nl_ftypes = nla_nest_start(msg, ift);
1220                 if (!nl_ftypes)
1221                         return -ENOBUFS;
1222                 i = 0;
1223                 stypes = mgmt_stypes[ift].rx;
1224                 while (stypes) {
1225                         if ((stypes & 1) &&
1226                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1227                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1228                                 return -ENOBUFS;
1229                         stypes >>= 1;
1230                         i++;
1231                 }
1232                 nla_nest_end(msg, nl_ftypes);
1233         }
1234         nla_nest_end(msg, nl_ifs);
1235
1236         return 0;
1237 }
1238
1239 struct nl80211_dump_wiphy_state {
1240         s64 filter_wiphy;
1241         long start;
1242         long split_start, band_start, chan_start;
1243         bool split;
1244 };
1245
1246 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1247                               enum nl80211_commands cmd,
1248                               struct sk_buff *msg, u32 portid, u32 seq,
1249                               int flags, struct nl80211_dump_wiphy_state *state)
1250 {
1251         void *hdr;
1252         struct nlattr *nl_bands, *nl_band;
1253         struct nlattr *nl_freqs, *nl_freq;
1254         struct nlattr *nl_cmds;
1255         enum ieee80211_band band;
1256         struct ieee80211_channel *chan;
1257         int i;
1258         const struct ieee80211_txrx_stypes *mgmt_stypes =
1259                                 rdev->wiphy.mgmt_stypes;
1260         u32 features;
1261
1262         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1263         if (!hdr)
1264                 return -ENOBUFS;
1265
1266         if (WARN_ON(!state))
1267                 return -EINVAL;
1268
1269         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1270             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1271                            wiphy_name(&rdev->wiphy)) ||
1272             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1273                         cfg80211_rdev_list_generation))
1274                 goto nla_put_failure;
1275
1276         if (cmd != NL80211_CMD_NEW_WIPHY)
1277                 goto finish;
1278
1279         switch (state->split_start) {
1280         case 0:
1281                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1282                                rdev->wiphy.retry_short) ||
1283                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1284                                rdev->wiphy.retry_long) ||
1285                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1286                                 rdev->wiphy.frag_threshold) ||
1287                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1288                                 rdev->wiphy.rts_threshold) ||
1289                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1290                                rdev->wiphy.coverage_class) ||
1291                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1292                                rdev->wiphy.max_scan_ssids) ||
1293                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1294                                rdev->wiphy.max_sched_scan_ssids) ||
1295                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1296                                 rdev->wiphy.max_scan_ie_len) ||
1297                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1298                                 rdev->wiphy.max_sched_scan_ie_len) ||
1299                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1300                                rdev->wiphy.max_match_sets))
1301                         goto nla_put_failure;
1302
1303                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1304                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1305                         goto nla_put_failure;
1306                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1307                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1308                         goto nla_put_failure;
1309                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1310                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1311                         goto nla_put_failure;
1312                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1313                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1314                         goto nla_put_failure;
1315                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1316                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1317                         goto nla_put_failure;
1318                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1319                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1320                         goto nla_put_failure;
1321                 state->split_start++;
1322                 if (state->split)
1323                         break;
1324         case 1:
1325                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1326                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1327                             rdev->wiphy.cipher_suites))
1328                         goto nla_put_failure;
1329
1330                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1331                                rdev->wiphy.max_num_pmkids))
1332                         goto nla_put_failure;
1333
1334                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1335                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1336                         goto nla_put_failure;
1337
1338                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1339                                 rdev->wiphy.available_antennas_tx) ||
1340                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1341                                 rdev->wiphy.available_antennas_rx))
1342                         goto nla_put_failure;
1343
1344                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1345                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1346                                 rdev->wiphy.probe_resp_offload))
1347                         goto nla_put_failure;
1348
1349                 if ((rdev->wiphy.available_antennas_tx ||
1350                      rdev->wiphy.available_antennas_rx) &&
1351                     rdev->ops->get_antenna) {
1352                         u32 tx_ant = 0, rx_ant = 0;
1353                         int res;
1354                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1355                         if (!res) {
1356                                 if (nla_put_u32(msg,
1357                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1358                                                 tx_ant) ||
1359                                     nla_put_u32(msg,
1360                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1361                                                 rx_ant))
1362                                         goto nla_put_failure;
1363                         }
1364                 }
1365
1366                 state->split_start++;
1367                 if (state->split)
1368                         break;
1369         case 2:
1370                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1371                                         rdev->wiphy.interface_modes))
1372                                 goto nla_put_failure;
1373                 state->split_start++;
1374                 if (state->split)
1375                         break;
1376         case 3:
1377                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1378                 if (!nl_bands)
1379                         goto nla_put_failure;
1380
1381                 for (band = state->band_start;
1382                      band < IEEE80211_NUM_BANDS; band++) {
1383                         struct ieee80211_supported_band *sband;
1384
1385                         sband = rdev->wiphy.bands[band];
1386
1387                         if (!sband)
1388                                 continue;
1389
1390                         nl_band = nla_nest_start(msg, band);
1391                         if (!nl_band)
1392                                 goto nla_put_failure;
1393
1394                         switch (state->chan_start) {
1395                         case 0:
1396                                 if (nl80211_send_band_rateinfo(msg, sband))
1397                                         goto nla_put_failure;
1398                                 state->chan_start++;
1399                                 if (state->split)
1400                                         break;
1401                         default:
1402                                 /* add frequencies */
1403                                 nl_freqs = nla_nest_start(
1404                                         msg, NL80211_BAND_ATTR_FREQS);
1405                                 if (!nl_freqs)
1406                                         goto nla_put_failure;
1407
1408                                 for (i = state->chan_start - 1;
1409                                      i < sband->n_channels;
1410                                      i++) {
1411                                         nl_freq = nla_nest_start(msg, i);
1412                                         if (!nl_freq)
1413                                                 goto nla_put_failure;
1414
1415                                         chan = &sband->channels[i];
1416
1417                                         if (nl80211_msg_put_channel(
1418                                                         msg, chan,
1419                                                         state->split))
1420                                                 goto nla_put_failure;
1421
1422                                         nla_nest_end(msg, nl_freq);
1423                                         if (state->split)
1424                                                 break;
1425                                 }
1426                                 if (i < sband->n_channels)
1427                                         state->chan_start = i + 2;
1428                                 else
1429                                         state->chan_start = 0;
1430                                 nla_nest_end(msg, nl_freqs);
1431                         }
1432
1433                         nla_nest_end(msg, nl_band);
1434
1435                         if (state->split) {
1436                                 /* start again here */
1437                                 if (state->chan_start)
1438                                         band--;
1439                                 break;
1440                         }
1441                 }
1442                 nla_nest_end(msg, nl_bands);
1443
1444                 if (band < IEEE80211_NUM_BANDS)
1445                         state->band_start = band + 1;
1446                 else
1447                         state->band_start = 0;
1448
1449                 /* if bands & channels are done, continue outside */
1450                 if (state->band_start == 0 && state->chan_start == 0)
1451                         state->split_start++;
1452                 if (state->split)
1453                         break;
1454         case 4:
1455                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1456                 if (!nl_cmds)
1457                         goto nla_put_failure;
1458
1459                 i = 0;
1460 #define CMD(op, n)                                                      \
1461                  do {                                                   \
1462                         if (rdev->ops->op) {                            \
1463                                 i++;                                    \
1464                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1465                                         goto nla_put_failure;           \
1466                         }                                               \
1467                 } while (0)
1468
1469                 CMD(add_virtual_intf, NEW_INTERFACE);
1470                 CMD(change_virtual_intf, SET_INTERFACE);
1471                 CMD(add_key, NEW_KEY);
1472                 CMD(start_ap, START_AP);
1473                 CMD(add_station, NEW_STATION);
1474                 CMD(add_mpath, NEW_MPATH);
1475                 CMD(update_mesh_config, SET_MESH_CONFIG);
1476                 CMD(change_bss, SET_BSS);
1477                 CMD(auth, AUTHENTICATE);
1478                 CMD(assoc, ASSOCIATE);
1479                 CMD(deauth, DEAUTHENTICATE);
1480                 CMD(disassoc, DISASSOCIATE);
1481                 CMD(join_ibss, JOIN_IBSS);
1482                 CMD(join_mesh, JOIN_MESH);
1483                 CMD(set_pmksa, SET_PMKSA);
1484                 CMD(del_pmksa, DEL_PMKSA);
1485                 CMD(flush_pmksa, FLUSH_PMKSA);
1486                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1487                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1488                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1489                 CMD(mgmt_tx, FRAME);
1490                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1491                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1492                         i++;
1493                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1494                                 goto nla_put_failure;
1495                 }
1496                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1497                     rdev->ops->join_mesh) {
1498                         i++;
1499                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1500                                 goto nla_put_failure;
1501                 }
1502                 CMD(set_wds_peer, SET_WDS_PEER);
1503                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1504                         CMD(tdls_mgmt, TDLS_MGMT);
1505                         CMD(tdls_oper, TDLS_OPER);
1506                 }
1507                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1508                         CMD(sched_scan_start, START_SCHED_SCAN);
1509                 CMD(probe_client, PROBE_CLIENT);
1510                 CMD(set_noack_map, SET_NOACK_MAP);
1511                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1512                         i++;
1513                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1514                                 goto nla_put_failure;
1515                 }
1516                 CMD(start_p2p_device, START_P2P_DEVICE);
1517                 CMD(set_mcast_rate, SET_MCAST_RATE);
1518 #ifdef CONFIG_NL80211_TESTMODE
1519                 CMD(testmode_cmd, TESTMODE);
1520 #endif
1521                 if (state->split) {
1522                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1523                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1524                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1525                                 CMD(channel_switch, CHANNEL_SWITCH);
1526                         CMD(set_qos_map, SET_QOS_MAP);
1527                         if (rdev->wiphy.features &
1528                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1529                                 CMD(add_tx_ts, ADD_TX_TS);
1530                 }
1531                 /* add into the if now */
1532 #undef CMD
1533
1534                 if (rdev->ops->connect || rdev->ops->auth) {
1535                         i++;
1536                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1537                                 goto nla_put_failure;
1538                 }
1539
1540                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1541                         i++;
1542                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1543                                 goto nla_put_failure;
1544                 }
1545
1546                 nla_nest_end(msg, nl_cmds);
1547                 state->split_start++;
1548                 if (state->split)
1549                         break;
1550         case 5:
1551                 if (rdev->ops->remain_on_channel &&
1552                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1553                     nla_put_u32(msg,
1554                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1555                                 rdev->wiphy.max_remain_on_channel_duration))
1556                         goto nla_put_failure;
1557
1558                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1559                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1560                         goto nla_put_failure;
1561
1562                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1563                         goto nla_put_failure;
1564                 state->split_start++;
1565                 if (state->split)
1566                         break;
1567         case 6:
1568 #ifdef CONFIG_PM
1569                 if (nl80211_send_wowlan(msg, rdev, state->split))
1570                         goto nla_put_failure;
1571                 state->split_start++;
1572                 if (state->split)
1573                         break;
1574 #else
1575                 state->split_start++;
1576 #endif
1577         case 7:
1578                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1579                                         rdev->wiphy.software_iftypes))
1580                         goto nla_put_failure;
1581
1582                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1583                                                    state->split))
1584                         goto nla_put_failure;
1585
1586                 state->split_start++;
1587                 if (state->split)
1588                         break;
1589         case 8:
1590                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1591                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1592                                 rdev->wiphy.ap_sme_capa))
1593                         goto nla_put_failure;
1594
1595                 features = rdev->wiphy.features;
1596                 /*
1597                  * We can only add the per-channel limit information if the
1598                  * dump is split, otherwise it makes it too big. Therefore
1599                  * only advertise it in that case.
1600                  */
1601                 if (state->split)
1602                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1603                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1604                         goto nla_put_failure;
1605
1606                 if (rdev->wiphy.ht_capa_mod_mask &&
1607                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1608                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1609                             rdev->wiphy.ht_capa_mod_mask))
1610                         goto nla_put_failure;
1611
1612                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1613                     rdev->wiphy.max_acl_mac_addrs &&
1614                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1615                                 rdev->wiphy.max_acl_mac_addrs))
1616                         goto nla_put_failure;
1617
1618                 /*
1619                  * Any information below this point is only available to
1620                  * applications that can deal with it being split. This
1621                  * helps ensure that newly added capabilities don't break
1622                  * older tools by overrunning their buffers.
1623                  *
1624                  * We still increment split_start so that in the split
1625                  * case we'll continue with more data in the next round,
1626                  * but break unconditionally so unsplit data stops here.
1627                  */
1628                 state->split_start++;
1629                 break;
1630         case 9:
1631                 if (rdev->wiphy.extended_capabilities &&
1632                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1633                              rdev->wiphy.extended_capabilities_len,
1634                              rdev->wiphy.extended_capabilities) ||
1635                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1636                              rdev->wiphy.extended_capabilities_len,
1637                              rdev->wiphy.extended_capabilities_mask)))
1638                         goto nla_put_failure;
1639
1640                 if (rdev->wiphy.vht_capa_mod_mask &&
1641                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1642                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1643                             rdev->wiphy.vht_capa_mod_mask))
1644                         goto nla_put_failure;
1645
1646                 state->split_start++;
1647                 break;
1648         case 10:
1649                 if (nl80211_send_coalesce(msg, rdev))
1650                         goto nla_put_failure;
1651
1652                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1653                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1654                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1655                         goto nla_put_failure;
1656
1657                 if (rdev->wiphy.max_ap_assoc_sta &&
1658                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1659                                 rdev->wiphy.max_ap_assoc_sta))
1660                         goto nla_put_failure;
1661
1662                 state->split_start++;
1663                 break;
1664         case 11:
1665                 if (rdev->wiphy.n_vendor_commands) {
1666                         const struct nl80211_vendor_cmd_info *info;
1667                         struct nlattr *nested;
1668
1669                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1670                         if (!nested)
1671                                 goto nla_put_failure;
1672
1673                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1674                                 info = &rdev->wiphy.vendor_commands[i].info;
1675                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1676                                         goto nla_put_failure;
1677                         }
1678                         nla_nest_end(msg, nested);
1679                 }
1680
1681                 if (rdev->wiphy.n_vendor_events) {
1682                         const struct nl80211_vendor_cmd_info *info;
1683                         struct nlattr *nested;
1684
1685                         nested = nla_nest_start(msg,
1686                                                 NL80211_ATTR_VENDOR_EVENTS);
1687                         if (!nested)
1688                                 goto nla_put_failure;
1689
1690                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1691                                 info = &rdev->wiphy.vendor_events[i];
1692                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1693                                         goto nla_put_failure;
1694                         }
1695                         nla_nest_end(msg, nested);
1696                 }
1697                 state->split_start++;
1698                 break;
1699         case 12:
1700                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1701                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1702                                rdev->wiphy.max_num_csa_counters))
1703                         goto nla_put_failure;
1704
1705                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1706                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1707                         goto nla_put_failure;
1708
1709                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1710                             sizeof(rdev->wiphy.ext_features),
1711                             rdev->wiphy.ext_features))
1712                         goto nla_put_failure;
1713
1714                 /* done */
1715                 state->split_start = 0;
1716                 break;
1717         }
1718  finish:
1719         return genlmsg_end(msg, hdr);
1720
1721  nla_put_failure:
1722         genlmsg_cancel(msg, hdr);
1723         return -EMSGSIZE;
1724 }
1725
1726 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1727                                     struct netlink_callback *cb,
1728                                     struct nl80211_dump_wiphy_state *state)
1729 {
1730         struct nlattr **tb = nl80211_fam.attrbuf;
1731         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1732                               tb, nl80211_fam.maxattr, nl80211_policy);
1733         /* ignore parse errors for backward compatibility */
1734         if (ret)
1735                 return 0;
1736
1737         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1738         if (tb[NL80211_ATTR_WIPHY])
1739                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1740         if (tb[NL80211_ATTR_WDEV])
1741                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1742         if (tb[NL80211_ATTR_IFINDEX]) {
1743                 struct net_device *netdev;
1744                 struct cfg80211_registered_device *rdev;
1745                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1746
1747                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1748                 if (!netdev)
1749                         return -ENODEV;
1750                 if (netdev->ieee80211_ptr) {
1751                         rdev = wiphy_to_rdev(
1752                                 netdev->ieee80211_ptr->wiphy);
1753                         state->filter_wiphy = rdev->wiphy_idx;
1754                 }
1755         }
1756
1757         return 0;
1758 }
1759
1760 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1761 {
1762         int idx = 0, ret;
1763         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1764         struct cfg80211_registered_device *rdev;
1765
1766         rtnl_lock();
1767         if (!state) {
1768                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1769                 if (!state) {
1770                         rtnl_unlock();
1771                         return -ENOMEM;
1772                 }
1773                 state->filter_wiphy = -1;
1774                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1775                 if (ret) {
1776                         kfree(state);
1777                         rtnl_unlock();
1778                         return ret;
1779                 }
1780                 cb->args[0] = (long)state;
1781         }
1782
1783         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1784                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1785                         continue;
1786                 if (++idx <= state->start)
1787                         continue;
1788                 if (state->filter_wiphy != -1 &&
1789                     state->filter_wiphy != rdev->wiphy_idx)
1790                         continue;
1791                 /* attempt to fit multiple wiphy data chunks into the skb */
1792                 do {
1793                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1794                                                  skb,
1795                                                  NETLINK_CB(cb->skb).portid,
1796                                                  cb->nlh->nlmsg_seq,
1797                                                  NLM_F_MULTI, state);
1798                         if (ret < 0) {
1799                                 /*
1800                                  * If sending the wiphy data didn't fit (ENOBUFS
1801                                  * or EMSGSIZE returned), this SKB is still
1802                                  * empty (so it's not too big because another
1803                                  * wiphy dataset is already in the skb) and
1804                                  * we've not tried to adjust the dump allocation
1805                                  * yet ... then adjust the alloc size to be
1806                                  * bigger, and return 1 but with the empty skb.
1807                                  * This results in an empty message being RX'ed
1808                                  * in userspace, but that is ignored.
1809                                  *
1810                                  * We can then retry with the larger buffer.
1811                                  */
1812                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1813                                     !skb->len && !state->split &&
1814                                     cb->min_dump_alloc < 4096) {
1815                                         cb->min_dump_alloc = 4096;
1816                                         state->split_start = 0;
1817                                         rtnl_unlock();
1818                                         return 1;
1819                                 }
1820                                 idx--;
1821                                 break;
1822                         }
1823                 } while (state->split_start > 0);
1824                 break;
1825         }
1826         rtnl_unlock();
1827
1828         state->start = idx;
1829
1830         return skb->len;
1831 }
1832
1833 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1834 {
1835         kfree((void *)cb->args[0]);
1836         return 0;
1837 }
1838
1839 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1840 {
1841         struct sk_buff *msg;
1842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1843         struct nl80211_dump_wiphy_state state = {};
1844
1845         msg = nlmsg_new(4096, GFP_KERNEL);
1846         if (!msg)
1847                 return -ENOMEM;
1848
1849         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1850                                info->snd_portid, info->snd_seq, 0,
1851                                &state) < 0) {
1852                 nlmsg_free(msg);
1853                 return -ENOBUFS;
1854         }
1855
1856         return genlmsg_reply(msg, info);
1857 }
1858
1859 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1860         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1861         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1862         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1863         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1864         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1865 };
1866
1867 static int parse_txq_params(struct nlattr *tb[],
1868                             struct ieee80211_txq_params *txq_params)
1869 {
1870         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1871             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1872             !tb[NL80211_TXQ_ATTR_AIFS])
1873                 return -EINVAL;
1874
1875         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1876         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1877         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1878         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1879         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1880
1881         if (txq_params->ac >= NL80211_NUM_ACS)
1882                 return -EINVAL;
1883
1884         return 0;
1885 }
1886
1887 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1888 {
1889         /*
1890          * You can only set the channel explicitly for WDS interfaces,
1891          * all others have their channel managed via their respective
1892          * "establish a connection" command (connect, join, ...)
1893          *
1894          * For AP/GO and mesh mode, the channel can be set with the
1895          * channel userspace API, but is only stored and passed to the
1896          * low-level driver when the AP starts or the mesh is joined.
1897          * This is for backward compatibility, userspace can also give
1898          * the channel in the start-ap or join-mesh commands instead.
1899          *
1900          * Monitors are special as they are normally slaved to
1901          * whatever else is going on, so they have their own special
1902          * operation to set the monitor channel if possible.
1903          */
1904         return !wdev ||
1905                 wdev->iftype == NL80211_IFTYPE_AP ||
1906                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1907                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1908                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1909 }
1910
1911 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1912                                  struct genl_info *info,
1913                                  struct cfg80211_chan_def *chandef)
1914 {
1915         u32 control_freq;
1916
1917         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1918                 return -EINVAL;
1919
1920         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1921
1922         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1923         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1924         chandef->center_freq1 = control_freq;
1925         chandef->center_freq2 = 0;
1926
1927         /* Primary channel not allowed */
1928         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1929                 return -EINVAL;
1930
1931         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1932                 enum nl80211_channel_type chantype;
1933
1934                 chantype = nla_get_u32(
1935                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1936
1937                 switch (chantype) {
1938                 case NL80211_CHAN_NO_HT:
1939                 case NL80211_CHAN_HT20:
1940                 case NL80211_CHAN_HT40PLUS:
1941                 case NL80211_CHAN_HT40MINUS:
1942                         cfg80211_chandef_create(chandef, chandef->chan,
1943                                                 chantype);
1944                         break;
1945                 default:
1946                         return -EINVAL;
1947                 }
1948         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1949                 chandef->width =
1950                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1951                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1952                         chandef->center_freq1 =
1953                                 nla_get_u32(
1954                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1955                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1956                         chandef->center_freq2 =
1957                                 nla_get_u32(
1958                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1959         }
1960
1961         if (!cfg80211_chandef_valid(chandef))
1962                 return -EINVAL;
1963
1964         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1965                                      IEEE80211_CHAN_DISABLED))
1966                 return -EINVAL;
1967
1968         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1969              chandef->width == NL80211_CHAN_WIDTH_10) &&
1970             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1971                 return -EINVAL;
1972
1973         return 0;
1974 }
1975
1976 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1977                                  struct net_device *dev,
1978                                  struct genl_info *info)
1979 {
1980         struct cfg80211_chan_def chandef;
1981         int result;
1982         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1983         struct wireless_dev *wdev = NULL;
1984
1985         if (dev)
1986                 wdev = dev->ieee80211_ptr;
1987         if (!nl80211_can_set_dev_channel(wdev))
1988                 return -EOPNOTSUPP;
1989         if (wdev)
1990                 iftype = wdev->iftype;
1991
1992         result = nl80211_parse_chandef(rdev, info, &chandef);
1993         if (result)
1994                 return result;
1995
1996         switch (iftype) {
1997         case NL80211_IFTYPE_AP:
1998         case NL80211_IFTYPE_P2P_GO:
1999                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2000                         result = -EINVAL;
2001                         break;
2002                 }
2003                 if (wdev->beacon_interval) {
2004                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2005                             !(rdev->wiphy.features &
2006                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2007                                 result = -EBUSY;
2008                                 break;
2009                         }
2010
2011                         /* Only allow dynamic channel width changes */
2012                         if (chandef.chan != wdev->preset_chandef.chan) {
2013                                 result = -EBUSY;
2014                                 break;
2015                         }
2016                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2017                         if (result)
2018                                 break;
2019                 }
2020                 wdev->preset_chandef = chandef;
2021                 result = 0;
2022                 break;
2023         case NL80211_IFTYPE_MESH_POINT:
2024                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2025                 break;
2026         case NL80211_IFTYPE_MONITOR:
2027                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2028                 break;
2029         default:
2030                 result = -EINVAL;
2031         }
2032
2033         return result;
2034 }
2035
2036 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2037 {
2038         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2039         struct net_device *netdev = info->user_ptr[1];
2040
2041         return __nl80211_set_channel(rdev, netdev, info);
2042 }
2043
2044 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2045 {
2046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2047         struct net_device *dev = info->user_ptr[1];
2048         struct wireless_dev *wdev = dev->ieee80211_ptr;
2049         const u8 *bssid;
2050
2051         if (!info->attrs[NL80211_ATTR_MAC])
2052                 return -EINVAL;
2053
2054         if (netif_running(dev))
2055                 return -EBUSY;
2056
2057         if (!rdev->ops->set_wds_peer)
2058                 return -EOPNOTSUPP;
2059
2060         if (wdev->iftype != NL80211_IFTYPE_WDS)
2061                 return -EOPNOTSUPP;
2062
2063         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2064         return rdev_set_wds_peer(rdev, dev, bssid);
2065 }
2066
2067
2068 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2069 {
2070         struct cfg80211_registered_device *rdev;
2071         struct net_device *netdev = NULL;
2072         struct wireless_dev *wdev;
2073         int result = 0, rem_txq_params = 0;
2074         struct nlattr *nl_txq_params;
2075         u32 changed;
2076         u8 retry_short = 0, retry_long = 0;
2077         u32 frag_threshold = 0, rts_threshold = 0;
2078         u8 coverage_class = 0;
2079
2080         ASSERT_RTNL();
2081
2082         /*
2083          * Try to find the wiphy and netdev. Normally this
2084          * function shouldn't need the netdev, but this is
2085          * done for backward compatibility -- previously
2086          * setting the channel was done per wiphy, but now
2087          * it is per netdev. Previous userland like hostapd
2088          * also passed a netdev to set_wiphy, so that it is
2089          * possible to let that go to the right netdev!
2090          */
2091
2092         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2093                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2094
2095                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2096                 if (netdev && netdev->ieee80211_ptr)
2097                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2098                 else
2099                         netdev = NULL;
2100         }
2101
2102         if (!netdev) {
2103                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2104                                                   info->attrs);
2105                 if (IS_ERR(rdev))
2106                         return PTR_ERR(rdev);
2107                 wdev = NULL;
2108                 netdev = NULL;
2109                 result = 0;
2110         } else
2111                 wdev = netdev->ieee80211_ptr;
2112
2113         /*
2114          * end workaround code, by now the rdev is available
2115          * and locked, and wdev may or may not be NULL.
2116          */
2117
2118         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2119                 result = cfg80211_dev_rename(
2120                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2121
2122         if (result)
2123                 return result;
2124
2125         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2126                 struct ieee80211_txq_params txq_params;
2127                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2128
2129                 if (!rdev->ops->set_txq_params)
2130                         return -EOPNOTSUPP;
2131
2132                 if (!netdev)
2133                         return -EINVAL;
2134
2135                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2136                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2137                         return -EINVAL;
2138
2139                 if (!netif_running(netdev))
2140                         return -ENETDOWN;
2141
2142                 nla_for_each_nested(nl_txq_params,
2143                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2144                                     rem_txq_params) {
2145                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2146                                            nla_data(nl_txq_params),
2147                                            nla_len(nl_txq_params),
2148                                            txq_params_policy);
2149                         if (result)
2150                                 return result;
2151                         result = parse_txq_params(tb, &txq_params);
2152                         if (result)
2153                                 return result;
2154
2155                         result = rdev_set_txq_params(rdev, netdev,
2156                                                      &txq_params);
2157                         if (result)
2158                                 return result;
2159                 }
2160         }
2161
2162         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2163                 result = __nl80211_set_channel(
2164                         rdev,
2165                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2166                         info);
2167                 if (result)
2168                         return result;
2169         }
2170
2171         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2172                 struct wireless_dev *txp_wdev = wdev;
2173                 enum nl80211_tx_power_setting type;
2174                 int idx, mbm = 0;
2175
2176                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2177                         txp_wdev = NULL;
2178
2179                 if (!rdev->ops->set_tx_power)
2180                         return -EOPNOTSUPP;
2181
2182                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2183                 type = nla_get_u32(info->attrs[idx]);
2184
2185                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2186                     (type != NL80211_TX_POWER_AUTOMATIC))
2187                         return -EINVAL;
2188
2189                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2190                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2191                         mbm = nla_get_u32(info->attrs[idx]);
2192                 }
2193
2194                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2195                 if (result)
2196                         return result;
2197         }
2198
2199         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2200             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2201                 u32 tx_ant, rx_ant;
2202                 if ((!rdev->wiphy.available_antennas_tx &&
2203                      !rdev->wiphy.available_antennas_rx) ||
2204                     !rdev->ops->set_antenna)
2205                         return -EOPNOTSUPP;
2206
2207                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2208                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2209
2210                 /* reject antenna configurations which don't match the
2211                  * available antenna masks, except for the "all" mask */
2212                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2213                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2214                         return -EINVAL;
2215
2216                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2217                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2218
2219                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2220                 if (result)
2221                         return result;
2222         }
2223
2224         changed = 0;
2225
2226         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2227                 retry_short = nla_get_u8(
2228                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2229                 if (retry_short == 0)
2230                         return -EINVAL;
2231
2232                 changed |= WIPHY_PARAM_RETRY_SHORT;
2233         }
2234
2235         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2236                 retry_long = nla_get_u8(
2237                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2238                 if (retry_long == 0)
2239                         return -EINVAL;
2240
2241                 changed |= WIPHY_PARAM_RETRY_LONG;
2242         }
2243
2244         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2245                 frag_threshold = nla_get_u32(
2246                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2247                 if (frag_threshold < 256)
2248                         return -EINVAL;
2249
2250                 if (frag_threshold != (u32) -1) {
2251                         /*
2252                          * Fragments (apart from the last one) are required to
2253                          * have even length. Make the fragmentation code
2254                          * simpler by stripping LSB should someone try to use
2255                          * odd threshold value.
2256                          */
2257                         frag_threshold &= ~0x1;
2258                 }
2259                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2260         }
2261
2262         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2263                 rts_threshold = nla_get_u32(
2264                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2265                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2266         }
2267
2268         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2269                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2270                         return -EINVAL;
2271
2272                 coverage_class = nla_get_u8(
2273                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2274                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2275         }
2276
2277         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2278                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2279                         return -EOPNOTSUPP;
2280
2281                 changed |= WIPHY_PARAM_DYN_ACK;
2282         }
2283
2284         if (changed) {
2285                 u8 old_retry_short, old_retry_long;
2286                 u32 old_frag_threshold, old_rts_threshold;
2287                 u8 old_coverage_class;
2288
2289                 if (!rdev->ops->set_wiphy_params)
2290                         return -EOPNOTSUPP;
2291
2292                 old_retry_short = rdev->wiphy.retry_short;
2293                 old_retry_long = rdev->wiphy.retry_long;
2294                 old_frag_threshold = rdev->wiphy.frag_threshold;
2295                 old_rts_threshold = rdev->wiphy.rts_threshold;
2296                 old_coverage_class = rdev->wiphy.coverage_class;
2297
2298                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2299                         rdev->wiphy.retry_short = retry_short;
2300                 if (changed & WIPHY_PARAM_RETRY_LONG)
2301                         rdev->wiphy.retry_long = retry_long;
2302                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2303                         rdev->wiphy.frag_threshold = frag_threshold;
2304                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2305                         rdev->wiphy.rts_threshold = rts_threshold;
2306                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2307                         rdev->wiphy.coverage_class = coverage_class;
2308
2309                 result = rdev_set_wiphy_params(rdev, changed);
2310                 if (result) {
2311                         rdev->wiphy.retry_short = old_retry_short;
2312                         rdev->wiphy.retry_long = old_retry_long;
2313                         rdev->wiphy.frag_threshold = old_frag_threshold;
2314                         rdev->wiphy.rts_threshold = old_rts_threshold;
2315                         rdev->wiphy.coverage_class = old_coverage_class;
2316                 }
2317         }
2318         return 0;
2319 }
2320
2321 static inline u64 wdev_id(struct wireless_dev *wdev)
2322 {
2323         return (u64)wdev->identifier |
2324                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2325 }
2326
2327 static int nl80211_send_chandef(struct sk_buff *msg,
2328                                 const struct cfg80211_chan_def *chandef)
2329 {
2330         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2331                 return -EINVAL;
2332
2333         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2334                         chandef->chan->center_freq))
2335                 return -ENOBUFS;
2336         switch (chandef->width) {
2337         case NL80211_CHAN_WIDTH_20_NOHT:
2338         case NL80211_CHAN_WIDTH_20:
2339         case NL80211_CHAN_WIDTH_40:
2340                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2341                                 cfg80211_get_chandef_type(chandef)))
2342                         return -ENOBUFS;
2343                 break;
2344         default:
2345                 break;
2346         }
2347         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2348                 return -ENOBUFS;
2349         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2350                 return -ENOBUFS;
2351         if (chandef->center_freq2 &&
2352             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2353                 return -ENOBUFS;
2354         return 0;
2355 }
2356
2357 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2358                               struct cfg80211_registered_device *rdev,
2359                               struct wireless_dev *wdev, bool removal)
2360 {
2361         struct net_device *dev = wdev->netdev;
2362         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2363         void *hdr;
2364
2365         if (removal)
2366                 cmd = NL80211_CMD_DEL_INTERFACE;
2367
2368         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2369         if (!hdr)
2370                 return -1;
2371
2372         if (dev &&
2373             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2374              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2375                 goto nla_put_failure;
2376
2377         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2378             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2379             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2380             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2381             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2382                         rdev->devlist_generation ^
2383                         (cfg80211_rdev_list_generation << 2)))
2384                 goto nla_put_failure;
2385
2386         if (rdev->ops->get_channel) {
2387                 int ret;
2388                 struct cfg80211_chan_def chandef;
2389
2390                 ret = rdev_get_channel(rdev, wdev, &chandef);
2391                 if (ret == 0) {
2392                         if (nl80211_send_chandef(msg, &chandef))
2393                                 goto nla_put_failure;
2394                 }
2395         }
2396
2397         if (wdev->ssid_len) {
2398                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2399                         goto nla_put_failure;
2400         }
2401
2402         return genlmsg_end(msg, hdr);
2403
2404  nla_put_failure:
2405         genlmsg_cancel(msg, hdr);
2406         return -EMSGSIZE;
2407 }
2408
2409 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2410 {
2411         int wp_idx = 0;
2412         int if_idx = 0;
2413         int wp_start = cb->args[0];
2414         int if_start = cb->args[1];
2415         struct cfg80211_registered_device *rdev;
2416         struct wireless_dev *wdev;
2417
2418         rtnl_lock();
2419         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2420                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2421                         continue;
2422                 if (wp_idx < wp_start) {
2423                         wp_idx++;
2424                         continue;
2425                 }
2426                 if_idx = 0;
2427
2428                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2429                         if (if_idx < if_start) {
2430                                 if_idx++;
2431                                 continue;
2432                         }
2433                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2434                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2435                                                rdev, wdev, false) < 0) {
2436                                 goto out;
2437                         }
2438                         if_idx++;
2439                 }
2440
2441                 wp_idx++;
2442         }
2443  out:
2444         rtnl_unlock();
2445
2446         cb->args[0] = wp_idx;
2447         cb->args[1] = if_idx;
2448
2449         return skb->len;
2450 }
2451
2452 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2453 {
2454         struct sk_buff *msg;
2455         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2456         struct wireless_dev *wdev = info->user_ptr[1];
2457
2458         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2459         if (!msg)
2460                 return -ENOMEM;
2461
2462         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2463                                rdev, wdev, false) < 0) {
2464                 nlmsg_free(msg);
2465                 return -ENOBUFS;
2466         }
2467
2468         return genlmsg_reply(msg, info);
2469 }
2470
2471 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2472         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2473         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2474         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2475         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2476         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2477         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2478 };
2479
2480 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2481 {
2482         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2483         int flag;
2484
2485         *mntrflags = 0;
2486
2487         if (!nla)
2488                 return -EINVAL;
2489
2490         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2491                              nla, mntr_flags_policy))
2492                 return -EINVAL;
2493
2494         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2495                 if (flags[flag])
2496                         *mntrflags |= (1<<flag);
2497
2498         return 0;
2499 }
2500
2501 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2502                                struct net_device *netdev, u8 use_4addr,
2503                                enum nl80211_iftype iftype)
2504 {
2505         if (!use_4addr) {
2506                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2507                         return -EBUSY;
2508                 return 0;
2509         }
2510
2511         switch (iftype) {
2512         case NL80211_IFTYPE_AP_VLAN:
2513                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2514                         return 0;
2515                 break;
2516         case NL80211_IFTYPE_STATION:
2517                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2518                         return 0;
2519                 break;
2520         default:
2521                 break;
2522         }
2523
2524         return -EOPNOTSUPP;
2525 }
2526
2527 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2528 {
2529         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2530         struct vif_params params;
2531         int err;
2532         enum nl80211_iftype otype, ntype;
2533         struct net_device *dev = info->user_ptr[1];
2534         u32 _flags, *flags = NULL;
2535         bool change = false;
2536
2537         memset(&params, 0, sizeof(params));
2538
2539         otype = ntype = dev->ieee80211_ptr->iftype;
2540
2541         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2542                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2543                 if (otype != ntype)
2544                         change = true;
2545                 if (ntype > NL80211_IFTYPE_MAX)
2546                         return -EINVAL;
2547         }
2548
2549         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2550                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2551
2552                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2553                         return -EINVAL;
2554                 if (netif_running(dev))
2555                         return -EBUSY;
2556
2557                 wdev_lock(wdev);
2558                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2559                              IEEE80211_MAX_MESH_ID_LEN);
2560                 wdev->mesh_id_up_len =
2561                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2562                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2563                        wdev->mesh_id_up_len);
2564                 wdev_unlock(wdev);
2565         }
2566
2567         if (info->attrs[NL80211_ATTR_4ADDR]) {
2568                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2569                 change = true;
2570                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2571                 if (err)
2572                         return err;
2573         } else {
2574                 params.use_4addr = -1;
2575         }
2576
2577         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2578                 if (ntype != NL80211_IFTYPE_MONITOR)
2579                         return -EINVAL;
2580                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2581                                           &_flags);
2582                 if (err)
2583                         return err;
2584
2585                 flags = &_flags;
2586                 change = true;
2587         }
2588
2589         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2590             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2591                 return -EOPNOTSUPP;
2592
2593         if (change)
2594                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2595         else
2596                 err = 0;
2597
2598         if (!err && params.use_4addr != -1)
2599                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2600
2601         return err;
2602 }
2603
2604 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2605 {
2606         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2607         struct vif_params params;
2608         struct wireless_dev *wdev;
2609         struct sk_buff *msg, *event;
2610         int err;
2611         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2612         u32 flags;
2613
2614         /* to avoid failing a new interface creation due to pending removal */
2615         cfg80211_destroy_ifaces(rdev);
2616
2617         memset(&params, 0, sizeof(params));
2618
2619         if (!info->attrs[NL80211_ATTR_IFNAME])
2620                 return -EINVAL;
2621
2622         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2623                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2624                 if (type > NL80211_IFTYPE_MAX)
2625                         return -EINVAL;
2626         }
2627
2628         if (!rdev->ops->add_virtual_intf ||
2629             !(rdev->wiphy.interface_modes & (1 << type)))
2630                 return -EOPNOTSUPP;
2631
2632         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2633              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2634             info->attrs[NL80211_ATTR_MAC]) {
2635                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2636                            ETH_ALEN);
2637                 if (!is_valid_ether_addr(params.macaddr))
2638                         return -EADDRNOTAVAIL;
2639         }
2640
2641         if (info->attrs[NL80211_ATTR_4ADDR]) {
2642                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2643                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2644                 if (err)
2645                         return err;
2646         }
2647
2648         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2649         if (!msg)
2650                 return -ENOMEM;
2651
2652         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2653                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2654                                   &flags);
2655
2656         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2657             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2658                 return -EOPNOTSUPP;
2659
2660         wdev = rdev_add_virtual_intf(rdev,
2661                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2662                                 type, err ? NULL : &flags, &params);
2663         if (WARN_ON(!wdev)) {
2664                 nlmsg_free(msg);
2665                 return -EPROTO;
2666         } else if (IS_ERR(wdev)) {
2667                 nlmsg_free(msg);
2668                 return PTR_ERR(wdev);
2669         }
2670
2671         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2672                 wdev->owner_nlportid = info->snd_portid;
2673
2674         switch (type) {
2675         case NL80211_IFTYPE_MESH_POINT:
2676                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2677                         break;
2678                 wdev_lock(wdev);
2679                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2680                              IEEE80211_MAX_MESH_ID_LEN);
2681                 wdev->mesh_id_up_len =
2682                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2683                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2684                        wdev->mesh_id_up_len);
2685                 wdev_unlock(wdev);
2686                 break;
2687         case NL80211_IFTYPE_P2P_DEVICE:
2688                 /*
2689                  * P2P Device doesn't have a netdev, so doesn't go
2690                  * through the netdev notifier and must be added here
2691                  */
2692                 mutex_init(&wdev->mtx);
2693                 INIT_LIST_HEAD(&wdev->event_list);
2694                 spin_lock_init(&wdev->event_lock);
2695                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2696                 spin_lock_init(&wdev->mgmt_registrations_lock);
2697
2698                 wdev->identifier = ++rdev->wdev_id;
2699                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2700                 rdev->devlist_generation++;
2701                 break;
2702         default:
2703                 break;
2704         }
2705
2706         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2707                                rdev, wdev, false) < 0) {
2708                 nlmsg_free(msg);
2709                 return -ENOBUFS;
2710         }
2711
2712         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2713         if (event) {
2714                 if (nl80211_send_iface(event, 0, 0, 0,
2715                                        rdev, wdev, false) < 0) {
2716                         nlmsg_free(event);
2717                         goto out;
2718                 }
2719
2720                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2721                                         event, 0, NL80211_MCGRP_CONFIG,
2722                                         GFP_KERNEL);
2723         }
2724
2725 out:
2726         return genlmsg_reply(msg, info);
2727 }
2728
2729 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2730 {
2731         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2732         struct wireless_dev *wdev = info->user_ptr[1];
2733         struct sk_buff *msg;
2734         int status;
2735
2736         if (!rdev->ops->del_virtual_intf)
2737                 return -EOPNOTSUPP;
2738
2739         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2740         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2741                 nlmsg_free(msg);
2742                 msg = NULL;
2743         }
2744
2745         /*
2746          * If we remove a wireless device without a netdev then clear
2747          * user_ptr[1] so that nl80211_post_doit won't dereference it
2748          * to check if it needs to do dev_put(). Otherwise it crashes
2749          * since the wdev has been freed, unlike with a netdev where
2750          * we need the dev_put() for the netdev to really be freed.
2751          */
2752         if (!wdev->netdev)
2753                 info->user_ptr[1] = NULL;
2754
2755         status = rdev_del_virtual_intf(rdev, wdev);
2756         if (status >= 0 && msg)
2757                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2758                                         msg, 0, NL80211_MCGRP_CONFIG,
2759                                         GFP_KERNEL);
2760         else
2761                 nlmsg_free(msg);
2762
2763         return status;
2764 }
2765
2766 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2767 {
2768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2769         struct net_device *dev = info->user_ptr[1];
2770         u16 noack_map;
2771
2772         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2773                 return -EINVAL;
2774
2775         if (!rdev->ops->set_noack_map)
2776                 return -EOPNOTSUPP;
2777
2778         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2779
2780         return rdev_set_noack_map(rdev, dev, noack_map);
2781 }
2782
2783 struct get_key_cookie {
2784         struct sk_buff *msg;
2785         int error;
2786         int idx;
2787 };
2788
2789 static void get_key_callback(void *c, struct key_params *params)
2790 {
2791         struct nlattr *key;
2792         struct get_key_cookie *cookie = c;
2793
2794         if ((params->key &&
2795              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2796                      params->key_len, params->key)) ||
2797             (params->seq &&
2798              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2799                      params->seq_len, params->seq)) ||
2800             (params->cipher &&
2801              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2802                          params->cipher)))
2803                 goto nla_put_failure;
2804
2805         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2806         if (!key)
2807                 goto nla_put_failure;
2808
2809         if ((params->key &&
2810              nla_put(cookie->msg, NL80211_KEY_DATA,
2811                      params->key_len, params->key)) ||
2812             (params->seq &&
2813              nla_put(cookie->msg, NL80211_KEY_SEQ,
2814                      params->seq_len, params->seq)) ||
2815             (params->cipher &&
2816              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2817                          params->cipher)))
2818                 goto nla_put_failure;
2819
2820         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2821                 goto nla_put_failure;
2822
2823         nla_nest_end(cookie->msg, key);
2824
2825         return;
2826  nla_put_failure:
2827         cookie->error = 1;
2828 }
2829
2830 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2831 {
2832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2833         int err;
2834         struct net_device *dev = info->user_ptr[1];
2835         u8 key_idx = 0;
2836         const u8 *mac_addr = NULL;
2837         bool pairwise;
2838         struct get_key_cookie cookie = {
2839                 .error = 0,
2840         };
2841         void *hdr;
2842         struct sk_buff *msg;
2843
2844         if (info->attrs[NL80211_ATTR_KEY_IDX])
2845                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2846
2847         if (key_idx > 5)
2848                 return -EINVAL;
2849
2850         if (info->attrs[NL80211_ATTR_MAC])
2851                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2852
2853         pairwise = !!mac_addr;
2854         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2855                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2856                 if (kt >= NUM_NL80211_KEYTYPES)
2857                         return -EINVAL;
2858                 if (kt != NL80211_KEYTYPE_GROUP &&
2859                     kt != NL80211_KEYTYPE_PAIRWISE)
2860                         return -EINVAL;
2861                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2862         }
2863
2864         if (!rdev->ops->get_key)
2865                 return -EOPNOTSUPP;
2866
2867         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2868         if (!msg)
2869                 return -ENOMEM;
2870
2871         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2872                              NL80211_CMD_NEW_KEY);
2873         if (!hdr)
2874                 goto nla_put_failure;
2875
2876         cookie.msg = msg;
2877         cookie.idx = key_idx;
2878
2879         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2880             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2881                 goto nla_put_failure;
2882         if (mac_addr &&
2883             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2884                 goto nla_put_failure;
2885
2886         if (pairwise && mac_addr &&
2887             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2888                 return -ENOENT;
2889
2890         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2891                            get_key_callback);
2892
2893         if (err)
2894                 goto free_msg;
2895
2896         if (cookie.error)
2897                 goto nla_put_failure;
2898
2899         genlmsg_end(msg, hdr);
2900         return genlmsg_reply(msg, info);
2901
2902  nla_put_failure:
2903         err = -ENOBUFS;
2904  free_msg:
2905         nlmsg_free(msg);
2906         return err;
2907 }
2908
2909 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2910 {
2911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2912         struct key_parse key;
2913         int err;
2914         struct net_device *dev = info->user_ptr[1];
2915
2916         err = nl80211_parse_key(info, &key);
2917         if (err)
2918                 return err;
2919
2920         if (key.idx < 0)
2921                 return -EINVAL;
2922
2923         /* only support setting default key */
2924         if (!key.def && !key.defmgmt)
2925                 return -EINVAL;
2926
2927         wdev_lock(dev->ieee80211_ptr);
2928
2929         if (key.def) {
2930                 if (!rdev->ops->set_default_key) {
2931                         err = -EOPNOTSUPP;
2932                         goto out;
2933                 }
2934
2935                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2936                 if (err)
2937                         goto out;
2938
2939                 err = rdev_set_default_key(rdev, dev, key.idx,
2940                                                  key.def_uni, key.def_multi);
2941
2942                 if (err)
2943                         goto out;
2944
2945 #ifdef CONFIG_CFG80211_WEXT
2946                 dev->ieee80211_ptr->wext.default_key = key.idx;
2947 #endif
2948         } else {
2949                 if (key.def_uni || !key.def_multi) {
2950                         err = -EINVAL;
2951                         goto out;
2952                 }
2953
2954                 if (!rdev->ops->set_default_mgmt_key) {
2955                         err = -EOPNOTSUPP;
2956                         goto out;
2957                 }
2958
2959                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2960                 if (err)
2961                         goto out;
2962
2963                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2964                 if (err)
2965                         goto out;
2966
2967 #ifdef CONFIG_CFG80211_WEXT
2968                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2969 #endif
2970         }
2971
2972  out:
2973         wdev_unlock(dev->ieee80211_ptr);
2974
2975         return err;
2976 }
2977
2978 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2979 {
2980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2981         int err;
2982         struct net_device *dev = info->user_ptr[1];
2983         struct key_parse key;
2984         const u8 *mac_addr = NULL;
2985
2986         err = nl80211_parse_key(info, &key);
2987         if (err)
2988                 return err;
2989
2990         if (!key.p.key)
2991                 return -EINVAL;
2992
2993         if (info->attrs[NL80211_ATTR_MAC])
2994                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2995
2996         if (key.type == -1) {
2997                 if (mac_addr)
2998                         key.type = NL80211_KEYTYPE_PAIRWISE;
2999                 else
3000                         key.type = NL80211_KEYTYPE_GROUP;
3001         }
3002
3003         /* for now */
3004         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3005             key.type != NL80211_KEYTYPE_GROUP)
3006                 return -EINVAL;
3007
3008         if (!rdev->ops->add_key)
3009                 return -EOPNOTSUPP;
3010
3011         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3012                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3013                                            mac_addr))
3014                 return -EINVAL;
3015
3016         wdev_lock(dev->ieee80211_ptr);
3017         err = nl80211_key_allowed(dev->ieee80211_ptr);
3018         if (!err)
3019                 err = rdev_add_key(rdev, dev, key.idx,
3020                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3021                                     mac_addr, &key.p);
3022         wdev_unlock(dev->ieee80211_ptr);
3023
3024         return err;
3025 }
3026
3027 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3028 {
3029         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3030         int err;
3031         struct net_device *dev = info->user_ptr[1];
3032         u8 *mac_addr = NULL;
3033         struct key_parse key;
3034
3035         err = nl80211_parse_key(info, &key);
3036         if (err)
3037                 return err;
3038
3039         if (info->attrs[NL80211_ATTR_MAC])
3040                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3041
3042         if (key.type == -1) {
3043                 if (mac_addr)
3044                         key.type = NL80211_KEYTYPE_PAIRWISE;
3045                 else
3046                         key.type = NL80211_KEYTYPE_GROUP;
3047         }
3048
3049         /* for now */
3050         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3051             key.type != NL80211_KEYTYPE_GROUP)
3052                 return -EINVAL;
3053
3054         if (!rdev->ops->del_key)
3055                 return -EOPNOTSUPP;
3056
3057         wdev_lock(dev->ieee80211_ptr);
3058         err = nl80211_key_allowed(dev->ieee80211_ptr);
3059
3060         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3061             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3062                 err = -ENOENT;
3063
3064         if (!err)
3065                 err = rdev_del_key(rdev, dev, key.idx,
3066                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3067                                    mac_addr);
3068
3069 #ifdef CONFIG_CFG80211_WEXT
3070         if (!err) {
3071                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3072                         dev->ieee80211_ptr->wext.default_key = -1;
3073                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3074                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3075         }
3076 #endif
3077         wdev_unlock(dev->ieee80211_ptr);
3078
3079         return err;
3080 }
3081
3082 /* This function returns an error or the number of nested attributes */
3083 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3084 {
3085         struct nlattr *attr;
3086         int n_entries = 0, tmp;
3087
3088         nla_for_each_nested(attr, nl_attr, tmp) {
3089                 if (nla_len(attr) != ETH_ALEN)
3090                         return -EINVAL;
3091
3092                 n_entries++;
3093         }
3094
3095         return n_entries;
3096 }
3097
3098 /*
3099  * This function parses ACL information and allocates memory for ACL data.
3100  * On successful return, the calling function is responsible to free the
3101  * ACL buffer returned by this function.
3102  */
3103 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3104                                                 struct genl_info *info)
3105 {
3106         enum nl80211_acl_policy acl_policy;
3107         struct nlattr *attr;
3108         struct cfg80211_acl_data *acl;
3109         int i = 0, n_entries, tmp;
3110
3111         if (!wiphy->max_acl_mac_addrs)
3112                 return ERR_PTR(-EOPNOTSUPP);
3113
3114         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3115                 return ERR_PTR(-EINVAL);
3116
3117         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3118         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3119             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3120                 return ERR_PTR(-EINVAL);
3121
3122         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3123                 return ERR_PTR(-EINVAL);
3124
3125         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3126         if (n_entries < 0)
3127                 return ERR_PTR(n_entries);
3128
3129         if (n_entries > wiphy->max_acl_mac_addrs)
3130                 return ERR_PTR(-ENOTSUPP);
3131
3132         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3133                       GFP_KERNEL);
3134         if (!acl)
3135                 return ERR_PTR(-ENOMEM);
3136
3137         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3138                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3139                 i++;
3140         }
3141
3142         acl->n_acl_entries = n_entries;
3143         acl->acl_policy = acl_policy;
3144
3145         return acl;
3146 }
3147
3148 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3149 {
3150         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3151         struct net_device *dev = info->user_ptr[1];
3152         struct cfg80211_acl_data *acl;
3153         int err;
3154
3155         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3156             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3157                 return -EOPNOTSUPP;
3158
3159         if (!dev->ieee80211_ptr->beacon_interval)
3160                 return -EINVAL;
3161
3162         acl = parse_acl_data(&rdev->wiphy, info);
3163         if (IS_ERR(acl))
3164                 return PTR_ERR(acl);
3165
3166         err = rdev_set_mac_acl(rdev, dev, acl);
3167
3168         kfree(acl);
3169
3170         return err;
3171 }
3172
3173 static int nl80211_parse_beacon(struct nlattr *attrs[],
3174                                 struct cfg80211_beacon_data *bcn)
3175 {
3176         bool haveinfo = false;
3177
3178         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3179             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3180             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3181             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3182                 return -EINVAL;
3183
3184         memset(bcn, 0, sizeof(*bcn));
3185
3186         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3187                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3188                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3189                 if (!bcn->head_len)
3190                         return -EINVAL;
3191                 haveinfo = true;
3192         }
3193
3194         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3195                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3196                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3197                 haveinfo = true;
3198         }
3199
3200         if (!haveinfo)
3201                 return -EINVAL;
3202
3203         if (attrs[NL80211_ATTR_IE]) {
3204                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3205                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3206         }
3207
3208         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3209                 bcn->proberesp_ies =
3210                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3211                 bcn->proberesp_ies_len =
3212                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3213         }
3214
3215         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3216                 bcn->assocresp_ies =
3217                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3218                 bcn->assocresp_ies_len =
3219                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3220         }
3221
3222         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3223                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3224                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3225         }
3226
3227         return 0;
3228 }
3229
3230 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3231                                    struct cfg80211_ap_settings *params)
3232 {
3233         struct wireless_dev *wdev;
3234         bool ret = false;
3235
3236         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3237                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3238                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3239                         continue;
3240
3241                 if (!wdev->preset_chandef.chan)
3242                         continue;
3243
3244                 params->chandef = wdev->preset_chandef;
3245                 ret = true;
3246                 break;
3247         }
3248
3249         return ret;
3250 }
3251
3252 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3253                                     enum nl80211_auth_type auth_type,
3254                                     enum nl80211_commands cmd)
3255 {
3256         if (auth_type > NL80211_AUTHTYPE_MAX)
3257                 return false;
3258
3259         switch (cmd) {
3260         case NL80211_CMD_AUTHENTICATE:
3261                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3262                     auth_type == NL80211_AUTHTYPE_SAE)
3263                         return false;
3264                 return true;
3265         case NL80211_CMD_CONNECT:
3266         case NL80211_CMD_START_AP:
3267                 /* SAE not supported yet */
3268                 if (auth_type == NL80211_AUTHTYPE_SAE)
3269                         return false;
3270                 return true;
3271         default:
3272                 return false;
3273         }
3274 }
3275
3276 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3277 {
3278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3279         struct net_device *dev = info->user_ptr[1];
3280         struct wireless_dev *wdev = dev->ieee80211_ptr;
3281         struct cfg80211_ap_settings params;
3282         int err;
3283
3284         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3285             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3286                 return -EOPNOTSUPP;
3287
3288         if (!rdev->ops->start_ap)
3289                 return -EOPNOTSUPP;
3290
3291         if (wdev->beacon_interval)
3292                 return -EALREADY;
3293
3294         memset(&params, 0, sizeof(params));
3295
3296         /* these are required for START_AP */
3297         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3298             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3299             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3300                 return -EINVAL;
3301
3302         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3303         if (err)
3304                 return err;
3305
3306         params.beacon_interval =
3307                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3308         params.dtim_period =
3309                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3310
3311         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3312         if (err)
3313                 return err;
3314
3315         /*
3316          * In theory, some of these attributes should be required here
3317          * but since they were not used when the command was originally
3318          * added, keep them optional for old user space programs to let
3319          * them continue to work with drivers that do not need the
3320          * additional information -- drivers must check!
3321          */
3322         if (info->attrs[NL80211_ATTR_SSID]) {
3323                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3324                 params.ssid_len =
3325                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3326                 if (params.ssid_len == 0 ||
3327                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3328                         return -EINVAL;
3329         }
3330
3331         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3332                 params.hidden_ssid = nla_get_u32(
3333                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3334                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3335                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3336                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3337                         return -EINVAL;
3338         }
3339
3340         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3341
3342         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3343                 params.auth_type = nla_get_u32(
3344                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3345                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3346                                              NL80211_CMD_START_AP))
3347                         return -EINVAL;
3348         } else
3349                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3350
3351         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3352                                       NL80211_MAX_NR_CIPHER_SUITES);
3353         if (err)
3354                 return err;
3355
3356         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3357                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3358                         return -EOPNOTSUPP;
3359                 params.inactivity_timeout = nla_get_u16(
3360                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3361         }
3362
3363         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3364                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3365                         return -EINVAL;
3366                 params.p2p_ctwindow =
3367                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3368                 if (params.p2p_ctwindow > 127)
3369                         return -EINVAL;
3370                 if (params.p2p_ctwindow != 0 &&
3371                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3372                         return -EINVAL;
3373         }
3374
3375         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3376                 u8 tmp;
3377
3378                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3379                         return -EINVAL;
3380                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3381                 if (tmp > 1)
3382                         return -EINVAL;
3383                 params.p2p_opp_ps = tmp;
3384                 if (params.p2p_opp_ps != 0 &&
3385                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3386                         return -EINVAL;
3387         }
3388
3389         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3390                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3391                 if (err)
3392                         return err;
3393         } else if (wdev->preset_chandef.chan) {
3394                 params.chandef = wdev->preset_chandef;
3395         } else if (!nl80211_get_ap_channel(rdev, &params))
3396                 return -EINVAL;
3397
3398         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3399                                      wdev->iftype))
3400                 return -EINVAL;
3401
3402         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3403                 params.acl = parse_acl_data(&rdev->wiphy, info);
3404                 if (IS_ERR(params.acl))
3405                         return PTR_ERR(params.acl);
3406         }
3407
3408         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3409                 params.smps_mode =
3410                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3411                 switch (params.smps_mode) {
3412                 case NL80211_SMPS_OFF:
3413                         break;
3414                 case NL80211_SMPS_STATIC:
3415                         if (!(rdev->wiphy.features &
3416                               NL80211_FEATURE_STATIC_SMPS))
3417                                 return -EINVAL;
3418                         break;
3419                 case NL80211_SMPS_DYNAMIC:
3420                         if (!(rdev->wiphy.features &
3421                               NL80211_FEATURE_DYNAMIC_SMPS))
3422                                 return -EINVAL;
3423                         break;
3424                 default:
3425                         return -EINVAL;
3426                 }
3427         } else {
3428                 params.smps_mode = NL80211_SMPS_OFF;
3429         }
3430
3431         wdev_lock(wdev);
3432         err = rdev_start_ap(rdev, dev, &params);
3433         if (!err) {
3434                 wdev->preset_chandef = params.chandef;
3435                 wdev->beacon_interval = params.beacon_interval;
3436                 wdev->chandef = params.chandef;
3437                 wdev->ssid_len = params.ssid_len;
3438                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3439         }
3440         wdev_unlock(wdev);
3441
3442         kfree(params.acl);
3443
3444         return err;
3445 }
3446
3447 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3448 {
3449         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3450         struct net_device *dev = info->user_ptr[1];
3451         struct wireless_dev *wdev = dev->ieee80211_ptr;
3452         struct cfg80211_beacon_data params;
3453         int err;
3454
3455         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3456             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3457                 return -EOPNOTSUPP;
3458
3459         if (!rdev->ops->change_beacon)
3460                 return -EOPNOTSUPP;
3461
3462         if (!wdev->beacon_interval)
3463                 return -EINVAL;
3464
3465         err = nl80211_parse_beacon(info->attrs, &params);
3466         if (err)
3467                 return err;
3468
3469         wdev_lock(wdev);
3470         err = rdev_change_beacon(rdev, dev, &params);
3471         wdev_unlock(wdev);
3472
3473         return err;
3474 }
3475
3476 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3477 {
3478         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3479         struct net_device *dev = info->user_ptr[1];
3480
3481         return cfg80211_stop_ap(rdev, dev, false);
3482 }
3483
3484 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3485         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3486         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3487         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3488         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3489         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3490         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3491 };
3492
3493 static int parse_station_flags(struct genl_info *info,
3494                                enum nl80211_iftype iftype,
3495                                struct station_parameters *params)
3496 {
3497         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3498         struct nlattr *nla;
3499         int flag;
3500
3501         /*
3502          * Try parsing the new attribute first so userspace
3503          * can specify both for older kernels.
3504          */
3505         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3506         if (nla) {
3507                 struct nl80211_sta_flag_update *sta_flags;
3508
3509                 sta_flags = nla_data(nla);
3510                 params->sta_flags_mask = sta_flags->mask;
3511                 params->sta_flags_set = sta_flags->set;
3512                 params->sta_flags_set &= params->sta_flags_mask;
3513                 if ((params->sta_flags_mask |
3514                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3515                         return -EINVAL;
3516                 return 0;
3517         }
3518
3519         /* if present, parse the old attribute */
3520
3521         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3522         if (!nla)
3523                 return 0;
3524
3525         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3526                              nla, sta_flags_policy))
3527                 return -EINVAL;
3528
3529         /*
3530          * Only allow certain flags for interface types so that
3531          * other attributes are silently ignored. Remember that
3532          * this is backward compatibility code with old userspace
3533          * and shouldn't be hit in other cases anyway.
3534          */
3535         switch (iftype) {
3536         case NL80211_IFTYPE_AP:
3537         case NL80211_IFTYPE_AP_VLAN:
3538         case NL80211_IFTYPE_P2P_GO:
3539                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3540                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3541                                          BIT(NL80211_STA_FLAG_WME) |
3542                                          BIT(NL80211_STA_FLAG_MFP);
3543                 break;
3544         case NL80211_IFTYPE_P2P_CLIENT:
3545         case NL80211_IFTYPE_STATION:
3546                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3547                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3548                 break;
3549         case NL80211_IFTYPE_MESH_POINT:
3550                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3551                                          BIT(NL80211_STA_FLAG_MFP) |
3552                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3553         default:
3554                 return -EINVAL;
3555         }
3556
3557         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3558                 if (flags[flag]) {
3559                         params->sta_flags_set |= (1<<flag);
3560
3561                         /* no longer support new API additions in old API */
3562                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3563                                 return -EINVAL;
3564                 }
3565         }
3566
3567         return 0;
3568 }
3569
3570 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3571                                  int attr)
3572 {
3573         struct nlattr *rate;
3574         u32 bitrate;
3575         u16 bitrate_compat;
3576
3577         rate = nla_nest_start(msg, attr);
3578         if (!rate)
3579                 return false;
3580
3581         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3582         bitrate = cfg80211_calculate_bitrate(info);
3583         /* report 16-bit bitrate only if we can */
3584         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3585         if (bitrate > 0 &&
3586             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3587                 return false;
3588         if (bitrate_compat > 0 &&
3589             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3590                 return false;
3591
3592         if (info->flags & RATE_INFO_FLAGS_MCS) {
3593                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3594                         return false;
3595                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3596                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3597                         return false;
3598                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3599                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3600                         return false;
3601         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3602                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3603                         return false;
3604                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3605                         return false;
3606                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3607                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3608                         return false;
3609                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3610                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3611                         return false;
3612                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3613                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3614                         return false;
3615                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3616                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3617                         return false;
3618                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3619                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3620                         return false;
3621         }
3622
3623         nla_nest_end(msg, rate);
3624         return true;
3625 }
3626
3627 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3628                                int id)
3629 {
3630         void *attr;
3631         int i = 0;
3632
3633         if (!mask)
3634                 return true;
3635
3636         attr = nla_nest_start(msg, id);
3637         if (!attr)
3638                 return false;
3639
3640         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3641                 if (!(mask & BIT(i)))
3642                         continue;
3643
3644                 if (nla_put_u8(msg, i, signal[i]))
3645                         return false;
3646         }
3647
3648         nla_nest_end(msg, attr);
3649
3650         return true;
3651 }
3652
3653 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3654                                 int flags,
3655                                 struct cfg80211_registered_device *rdev,
3656                                 struct net_device *dev,
3657                                 const u8 *mac_addr, struct station_info *sinfo)
3658 {
3659         void *hdr;
3660         struct nlattr *sinfoattr, *bss_param;
3661
3662         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3663         if (!hdr)
3664                 return -1;
3665
3666         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3667             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3668             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3669                 goto nla_put_failure;
3670
3671         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3672         if (!sinfoattr)
3673                 goto nla_put_failure;
3674         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3675             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3676                         sinfo->connected_time))
3677                 goto nla_put_failure;
3678         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3679             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3680                         sinfo->inactive_time))
3681                 goto nla_put_failure;
3682         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3683                               STATION_INFO_RX_BYTES64)) &&
3684             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3685                         (u32)sinfo->rx_bytes))
3686                 goto nla_put_failure;
3687         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3688                               STATION_INFO_TX_BYTES64)) &&
3689             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3690                         (u32)sinfo->tx_bytes))
3691                 goto nla_put_failure;
3692         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3693             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3694                         sinfo->rx_bytes))
3695                 goto nla_put_failure;
3696         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3697             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3698                         sinfo->tx_bytes))
3699                 goto nla_put_failure;
3700         if ((sinfo->filled & STATION_INFO_LLID) &&
3701             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3702                 goto nla_put_failure;
3703         if ((sinfo->filled & STATION_INFO_PLID) &&
3704             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3705                 goto nla_put_failure;
3706         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3707             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3708                        sinfo->plink_state))
3709                 goto nla_put_failure;
3710         switch (rdev->wiphy.signal_type) {
3711         case CFG80211_SIGNAL_TYPE_MBM:
3712                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3713                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3714                                sinfo->signal))
3715                         goto nla_put_failure;
3716                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3717                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3718                                sinfo->signal_avg))
3719                         goto nla_put_failure;
3720                 break;
3721         default:
3722                 break;
3723         }
3724         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3725                 if (!nl80211_put_signal(msg, sinfo->chains,
3726                                         sinfo->chain_signal,
3727                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3728                         goto nla_put_failure;
3729         }
3730         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3731                 if (!nl80211_put_signal(msg, sinfo->chains,
3732                                         sinfo->chain_signal_avg,
3733                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3734                         goto nla_put_failure;
3735         }
3736         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3737                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3738                                           NL80211_STA_INFO_TX_BITRATE))
3739                         goto nla_put_failure;
3740         }
3741         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3742                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3743                                           NL80211_STA_INFO_RX_BITRATE))
3744                         goto nla_put_failure;
3745         }
3746         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3747             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3748                         sinfo->rx_packets))
3749                 goto nla_put_failure;
3750         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3751             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3752                         sinfo->tx_packets))
3753                 goto nla_put_failure;
3754         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3755             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3756                         sinfo->tx_retries))
3757                 goto nla_put_failure;
3758         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3759             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3760                         sinfo->tx_failed))
3761                 goto nla_put_failure;
3762         if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3763             nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3764                         sinfo->expected_throughput))
3765                 goto nla_put_failure;
3766         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3767             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3768                         sinfo->beacon_loss_count))
3769                 goto nla_put_failure;
3770         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3771             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3772                         sinfo->local_pm))
3773                 goto nla_put_failure;
3774         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3775             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3776                         sinfo->peer_pm))
3777                 goto nla_put_failure;
3778         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3779             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3780                         sinfo->nonpeer_pm))
3781                 goto nla_put_failure;
3782         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3783                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3784                 if (!bss_param)
3785                         goto nla_put_failure;
3786
3787                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3788                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3789                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3790                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3791                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3792                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3793                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3794                                sinfo->bss_param.dtim_period) ||
3795                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3796                                 sinfo->bss_param.beacon_interval))
3797                         goto nla_put_failure;
3798
3799                 nla_nest_end(msg, bss_param);
3800         }
3801         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3802             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3803                     sizeof(struct nl80211_sta_flag_update),
3804                     &sinfo->sta_flags))
3805                 goto nla_put_failure;
3806         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3807                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3808                             sinfo->t_offset))
3809                 goto nla_put_failure;
3810         nla_nest_end(msg, sinfoattr);
3811
3812         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3813             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3814                     sinfo->assoc_req_ies))
3815                 goto nla_put_failure;
3816
3817         return genlmsg_end(msg, hdr);
3818
3819  nla_put_failure:
3820         genlmsg_cancel(msg, hdr);
3821         return -EMSGSIZE;
3822 }
3823
3824 static int nl80211_dump_station(struct sk_buff *skb,
3825                                 struct netlink_callback *cb)
3826 {
3827         struct station_info sinfo;
3828         struct cfg80211_registered_device *rdev;
3829         struct wireless_dev *wdev;
3830         u8 mac_addr[ETH_ALEN];
3831         int sta_idx = cb->args[2];
3832         int err;
3833
3834         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3835         if (err)
3836                 return err;
3837
3838         if (!wdev->netdev) {
3839                 err = -EINVAL;
3840                 goto out_err;
3841         }
3842
3843         if (!rdev->ops->dump_station) {
3844                 err = -EOPNOTSUPP;
3845                 goto out_err;
3846         }
3847
3848         while (1) {
3849                 memset(&sinfo, 0, sizeof(sinfo));
3850                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3851                                         mac_addr, &sinfo);
3852                 if (err == -ENOENT)
3853                         break;
3854                 if (err)
3855                         goto out_err;
3856
3857                 if (nl80211_send_station(skb,
3858                                 NETLINK_CB(cb->skb).portid,
3859                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3860                                 rdev, wdev->netdev, mac_addr,
3861                                 &sinfo) < 0)
3862                         goto out;
3863
3864                 sta_idx++;
3865         }
3866
3867
3868  out:
3869         cb->args[2] = sta_idx;
3870         err = skb->len;
3871  out_err:
3872         nl80211_finish_wdev_dump(rdev);
3873
3874         return err;
3875 }
3876
3877 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3878 {
3879         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3880         struct net_device *dev = info->user_ptr[1];
3881         struct station_info sinfo;
3882         struct sk_buff *msg;
3883         u8 *mac_addr = NULL;
3884         int err;
3885
3886         memset(&sinfo, 0, sizeof(sinfo));
3887
3888         if (!info->attrs[NL80211_ATTR_MAC])
3889                 return -EINVAL;
3890
3891         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3892
3893         if (!rdev->ops->get_station)
3894                 return -EOPNOTSUPP;
3895
3896         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3897         if (err)
3898                 return err;
3899
3900         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3901         if (!msg)
3902                 return -ENOMEM;
3903
3904         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3905                                  rdev, dev, mac_addr, &sinfo) < 0) {
3906                 nlmsg_free(msg);
3907                 return -ENOBUFS;
3908         }
3909
3910         return genlmsg_reply(msg, info);
3911 }
3912
3913 int cfg80211_check_station_change(struct wiphy *wiphy,
3914                                   struct station_parameters *params,
3915                                   enum cfg80211_station_type statype)
3916 {
3917         if (params->listen_interval != -1)
3918                 return -EINVAL;
3919         if (params->aid &&
3920             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3921                 return -EINVAL;
3922
3923         /* When you run into this, adjust the code below for the new flag */
3924         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3925
3926         switch (statype) {
3927         case CFG80211_STA_MESH_PEER_KERNEL:
3928         case CFG80211_STA_MESH_PEER_USER:
3929                 /*
3930                  * No ignoring the TDLS flag here -- the userspace mesh
3931                  * code doesn't have the bug of including TDLS in the
3932                  * mask everywhere.
3933                  */
3934                 if (params->sta_flags_mask &
3935                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3936                                   BIT(NL80211_STA_FLAG_MFP) |
3937                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3938                         return -EINVAL;
3939                 break;
3940         case CFG80211_STA_TDLS_PEER_SETUP:
3941         case CFG80211_STA_TDLS_PEER_ACTIVE:
3942                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3943                         return -EINVAL;
3944                 /* ignore since it can't change */
3945                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3946                 break;
3947         default:
3948                 /* disallow mesh-specific things */
3949                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3950                         return -EINVAL;
3951                 if (params->local_pm)
3952                         return -EINVAL;
3953                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3954                         return -EINVAL;
3955         }
3956
3957         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3958             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3959                 /* TDLS can't be set, ... */
3960                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3961                         return -EINVAL;
3962                 /*
3963                  * ... but don't bother the driver with it. This works around
3964                  * a hostapd/wpa_supplicant issue -- it always includes the
3965                  * TLDS_PEER flag in the mask even for AP mode.
3966                  */
3967                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3968         }
3969
3970         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3971                 /* reject other things that can't change */
3972                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3973                         return -EINVAL;
3974                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3975                         return -EINVAL;
3976                 if (params->supported_rates)
3977                         return -EINVAL;
3978                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3979                         return -EINVAL;
3980         }
3981
3982         if (statype != CFG80211_STA_AP_CLIENT) {
3983                 if (params->vlan)
3984                         return -EINVAL;
3985         }
3986
3987         switch (statype) {
3988         case CFG80211_STA_AP_MLME_CLIENT:
3989                 /* Use this only for authorizing/unauthorizing a station */
3990                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3991                         return -EOPNOTSUPP;
3992                 break;
3993         case CFG80211_STA_AP_CLIENT:
3994                 /* accept only the listed bits */
3995                 if (params->sta_flags_mask &
3996                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3997                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3998                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3999                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4000                                   BIT(NL80211_STA_FLAG_WME) |
4001                                   BIT(NL80211_STA_FLAG_MFP)))
4002                         return -EINVAL;
4003
4004                 /* but authenticated/associated only if driver handles it */
4005                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4006                     params->sta_flags_mask &
4007                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4008                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4009                         return -EINVAL;
4010                 break;
4011         case CFG80211_STA_IBSS:
4012         case CFG80211_STA_AP_STA:
4013                 /* reject any changes other than AUTHORIZED */
4014                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4015                         return -EINVAL;
4016                 break;
4017         case CFG80211_STA_TDLS_PEER_SETUP:
4018                 /* reject any changes other than AUTHORIZED or WME */
4019                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4020                                                BIT(NL80211_STA_FLAG_WME)))
4021                         return -EINVAL;
4022                 /* force (at least) rates when authorizing */
4023                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4024                     !params->supported_rates)
4025                         return -EINVAL;
4026                 break;
4027         case CFG80211_STA_TDLS_PEER_ACTIVE:
4028                 /* reject any changes */
4029                 return -EINVAL;
4030         case CFG80211_STA_MESH_PEER_KERNEL:
4031                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4032                         return -EINVAL;
4033                 break;
4034         case CFG80211_STA_MESH_PEER_USER:
4035                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4036                         return -EINVAL;
4037                 break;
4038         }
4039
4040         return 0;
4041 }
4042 EXPORT_SYMBOL(cfg80211_check_station_change);
4043
4044 /*
4045  * Get vlan interface making sure it is running and on the right wiphy.
4046  */
4047 static struct net_device *get_vlan(struct genl_info *info,
4048                                    struct cfg80211_registered_device *rdev)
4049 {
4050         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4051         struct net_device *v;
4052         int ret;
4053
4054         if (!vlanattr)
4055                 return NULL;
4056
4057         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4058         if (!v)
4059                 return ERR_PTR(-ENODEV);
4060
4061         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4062                 ret = -EINVAL;
4063                 goto error;
4064         }
4065
4066         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4067             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4068             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4069                 ret = -EINVAL;
4070                 goto error;
4071         }
4072
4073         if (!netif_running(v)) {
4074                 ret = -ENETDOWN;
4075                 goto error;
4076         }
4077
4078         return v;
4079  error:
4080         dev_put(v);
4081         return ERR_PTR(ret);
4082 }
4083
4084 static const struct nla_policy
4085 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4086         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4087         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4088 };
4089
4090 static int nl80211_parse_sta_wme(struct genl_info *info,
4091                                  struct station_parameters *params)
4092 {
4093         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4094         struct nlattr *nla;
4095         int err;
4096
4097         /* parse WME attributes if present */
4098         if (!info->attrs[NL80211_ATTR_STA_WME])
4099                 return 0;
4100
4101         nla = info->attrs[NL80211_ATTR_STA_WME];
4102         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4103                                nl80211_sta_wme_policy);
4104         if (err)
4105                 return err;
4106
4107         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4108                 params->uapsd_queues = nla_get_u8(
4109                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4110         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4111                 return -EINVAL;
4112
4113         if (tb[NL80211_STA_WME_MAX_SP])
4114                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4115
4116         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4117                 return -EINVAL;
4118
4119         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4120
4121         return 0;
4122 }
4123
4124 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4125                                       struct station_parameters *params)
4126 {
4127         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4128                 params->supported_channels =
4129                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4130                 params->supported_channels_len =
4131                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4132                 /*
4133                  * Need to include at least one (first channel, number of
4134                  * channels) tuple for each subband, and must have proper
4135                  * tuples for the rest of the data as well.
4136                  */
4137                 if (params->supported_channels_len < 2)
4138                         return -EINVAL;
4139                 if (params->supported_channels_len % 2)
4140                         return -EINVAL;
4141         }
4142
4143         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4144                 params->supported_oper_classes =
4145                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4146                 params->supported_oper_classes_len =
4147                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4148                 /*
4149                  * The value of the Length field of the Supported Operating
4150                  * Classes element is between 2 and 253.
4151                  */
4152                 if (params->supported_oper_classes_len < 2 ||
4153                     params->supported_oper_classes_len > 253)
4154                         return -EINVAL;
4155         }
4156         return 0;
4157 }
4158
4159 static int nl80211_set_station_tdls(struct genl_info *info,
4160                                     struct station_parameters *params)
4161 {
4162         int err;
4163         /* Dummy STA entry gets updated once the peer capabilities are known */
4164         if (info->attrs[NL80211_ATTR_PEER_AID])
4165                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4166         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4167                 params->ht_capa =
4168                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4169         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4170                 params->vht_capa =
4171                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4172
4173         err = nl80211_parse_sta_channel_info(info, params);
4174         if (err)
4175                 return err;
4176
4177         return nl80211_parse_sta_wme(info, params);
4178 }
4179
4180 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4181 {
4182         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4183         struct net_device *dev = info->user_ptr[1];
4184         struct station_parameters params;
4185         u8 *mac_addr;
4186         int err;
4187
4188         memset(&params, 0, sizeof(params));
4189
4190         params.listen_interval = -1;
4191
4192         if (!rdev->ops->change_station)
4193                 return -EOPNOTSUPP;
4194
4195         if (info->attrs[NL80211_ATTR_STA_AID])
4196                 return -EINVAL;
4197
4198         if (!info->attrs[NL80211_ATTR_MAC])
4199                 return -EINVAL;
4200
4201         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4202
4203         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4204                 params.supported_rates =
4205                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4206                 params.supported_rates_len =
4207                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4208         }
4209
4210         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4211                 params.capability =
4212                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4213                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4214         }
4215
4216         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4217                 params.ext_capab =
4218                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4219                 params.ext_capab_len =
4220                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4221         }
4222
4223         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4224                 return -EINVAL;
4225
4226         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4227                 return -EINVAL;
4228
4229         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4230                 params.plink_action =
4231                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4232                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4233                         return -EINVAL;
4234         }
4235
4236         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4237                 params.plink_state =
4238                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4239                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4240                         return -EINVAL;
4241                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4242         }
4243
4244         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4245                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4246                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4247
4248                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4249                     pm > NL80211_MESH_POWER_MAX)
4250                         return -EINVAL;
4251
4252                 params.local_pm = pm;
4253         }
4254
4255         /* Include parameters for TDLS peer (will check later) */
4256         err = nl80211_set_station_tdls(info, &params);
4257         if (err)
4258                 return err;
4259
4260         params.vlan = get_vlan(info, rdev);
4261         if (IS_ERR(params.vlan))
4262                 return PTR_ERR(params.vlan);
4263
4264         switch (dev->ieee80211_ptr->iftype) {
4265         case NL80211_IFTYPE_AP:
4266         case NL80211_IFTYPE_AP_VLAN:
4267         case NL80211_IFTYPE_P2P_GO:
4268         case NL80211_IFTYPE_P2P_CLIENT:
4269         case NL80211_IFTYPE_STATION:
4270         case NL80211_IFTYPE_ADHOC:
4271         case NL80211_IFTYPE_MESH_POINT:
4272                 break;
4273         default:
4274                 err = -EOPNOTSUPP;
4275                 goto out_put_vlan;
4276         }
4277
4278         /* driver will call cfg80211_check_station_change() */
4279         err = rdev_change_station(rdev, dev, mac_addr, &params);
4280
4281  out_put_vlan:
4282         if (params.vlan)
4283                 dev_put(params.vlan);
4284
4285         return err;
4286 }
4287
4288 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4289 {
4290         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4291         int err;
4292         struct net_device *dev = info->user_ptr[1];
4293         struct station_parameters params;
4294         u8 *mac_addr = NULL;
4295
4296         memset(&params, 0, sizeof(params));
4297
4298         if (!rdev->ops->add_station)
4299                 return -EOPNOTSUPP;
4300
4301         if (!info->attrs[NL80211_ATTR_MAC])
4302                 return -EINVAL;
4303
4304         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4305                 return -EINVAL;
4306
4307         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4308                 return -EINVAL;
4309
4310         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4311             !info->attrs[NL80211_ATTR_PEER_AID])
4312                 return -EINVAL;
4313
4314         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4315         params.supported_rates =
4316                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4317         params.supported_rates_len =
4318                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4319         params.listen_interval =
4320                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4321
4322         if (info->attrs[NL80211_ATTR_PEER_AID])
4323                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4324         else
4325                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4326         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4327                 return -EINVAL;
4328
4329         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4330                 params.capability =
4331                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4332                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4333         }
4334
4335         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4336                 params.ext_capab =
4337                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4338                 params.ext_capab_len =
4339                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4340         }
4341
4342         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4343                 params.ht_capa =
4344                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4345
4346         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4347                 params.vht_capa =
4348                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4349
4350         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4351                 params.opmode_notif_used = true;
4352                 params.opmode_notif =
4353                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4354         }
4355
4356         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4357                 params.plink_action =
4358                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4359                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4360                         return -EINVAL;
4361         }
4362
4363         err = nl80211_parse_sta_channel_info(info, &params);
4364         if (err)
4365                 return err;
4366
4367         err = nl80211_parse_sta_wme(info, &params);
4368         if (err)
4369                 return err;
4370
4371         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4372                 return -EINVAL;
4373
4374         /* When you run into this, adjust the code below for the new flag */
4375         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4376
4377         switch (dev->ieee80211_ptr->iftype) {
4378         case NL80211_IFTYPE_AP:
4379         case NL80211_IFTYPE_AP_VLAN:
4380         case NL80211_IFTYPE_P2P_GO:
4381                 /* ignore WME attributes if iface/sta is not capable */
4382                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4383                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4384                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4385
4386                 /* TDLS peers cannot be added */
4387                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4388                     info->attrs[NL80211_ATTR_PEER_AID])
4389                         return -EINVAL;
4390                 /* but don't bother the driver with it */
4391                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4392
4393                 /* allow authenticated/associated only if driver handles it */
4394                 if (!(rdev->wiphy.features &
4395                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4396                     params.sta_flags_mask &
4397                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4398                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4399                         return -EINVAL;
4400
4401                 /* must be last in here for error handling */
4402                 params.vlan = get_vlan(info, rdev);
4403                 if (IS_ERR(params.vlan))
4404                         return PTR_ERR(params.vlan);
4405                 break;
4406         case NL80211_IFTYPE_MESH_POINT:
4407                 /* ignore uAPSD data */
4408                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4409
4410                 /* associated is disallowed */
4411                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4412                         return -EINVAL;
4413                 /* TDLS peers cannot be added */
4414                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4415                     info->attrs[NL80211_ATTR_PEER_AID])
4416                         return -EINVAL;
4417                 break;
4418         case NL80211_IFTYPE_STATION:
4419         case NL80211_IFTYPE_P2P_CLIENT:
4420                 /* ignore uAPSD data */
4421                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4422
4423                 /* these are disallowed */
4424                 if (params.sta_flags_mask &
4425                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4426                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4427                         return -EINVAL;
4428                 /* Only TDLS peers can be added */
4429                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4430                         return -EINVAL;
4431                 /* Can only add if TDLS ... */
4432                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4433                         return -EOPNOTSUPP;
4434                 /* ... with external setup is supported */
4435                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4436                         return -EOPNOTSUPP;
4437                 /*
4438                  * Older wpa_supplicant versions always mark the TDLS peer
4439                  * as authorized, but it shouldn't yet be.
4440                  */
4441                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4442                 break;
4443         default:
4444                 return -EOPNOTSUPP;
4445         }
4446
4447         /* be aware of params.vlan when changing code here */
4448
4449         err = rdev_add_station(rdev, dev, mac_addr, &params);
4450
4451         if (params.vlan)
4452                 dev_put(params.vlan);
4453         return err;
4454 }
4455
4456 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4457 {
4458         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4459         struct net_device *dev = info->user_ptr[1];
4460         struct station_del_parameters params;
4461
4462         memset(&params, 0, sizeof(params));
4463
4464         if (info->attrs[NL80211_ATTR_MAC])
4465                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4466
4467         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4468             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4469             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4470             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4471                 return -EINVAL;
4472
4473         if (!rdev->ops->del_station)
4474                 return -EOPNOTSUPP;
4475
4476         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4477                 params.subtype =
4478                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4479                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4480                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4481                         return -EINVAL;
4482         } else {
4483                 /* Default to Deauthentication frame */
4484                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4485         }
4486
4487         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4488                 params.reason_code =
4489                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4490                 if (params.reason_code == 0)
4491                         return -EINVAL; /* 0 is reserved */
4492         } else {
4493                 /* Default to reason code 2 */
4494                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4495         }
4496
4497         return rdev_del_station(rdev, dev, &params);
4498 }
4499
4500 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4501                                 int flags, struct net_device *dev,
4502                                 u8 *dst, u8 *next_hop,
4503                                 struct mpath_info *pinfo)
4504 {
4505         void *hdr;
4506         struct nlattr *pinfoattr;
4507
4508         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4509         if (!hdr)
4510                 return -1;
4511
4512         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4513             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4514             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4515             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4516                 goto nla_put_failure;
4517
4518         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4519         if (!pinfoattr)
4520                 goto nla_put_failure;
4521         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4522             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4523                         pinfo->frame_qlen))
4524                 goto nla_put_failure;
4525         if (((pinfo->filled & MPATH_INFO_SN) &&
4526              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4527             ((pinfo->filled & MPATH_INFO_METRIC) &&
4528              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4529                          pinfo->metric)) ||
4530             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4531              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4532                          pinfo->exptime)) ||
4533             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4534              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4535                         pinfo->flags)) ||
4536             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4537              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4538                          pinfo->discovery_timeout)) ||
4539             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4540              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4541                         pinfo->discovery_retries)))
4542                 goto nla_put_failure;
4543
4544         nla_nest_end(msg, pinfoattr);
4545
4546         return genlmsg_end(msg, hdr);
4547
4548  nla_put_failure:
4549         genlmsg_cancel(msg, hdr);
4550         return -EMSGSIZE;
4551 }
4552
4553 static int nl80211_dump_mpath(struct sk_buff *skb,
4554                               struct netlink_callback *cb)
4555 {
4556         struct mpath_info pinfo;
4557         struct cfg80211_registered_device *rdev;
4558         struct wireless_dev *wdev;
4559         u8 dst[ETH_ALEN];
4560         u8 next_hop[ETH_ALEN];
4561         int path_idx = cb->args[2];
4562         int err;
4563
4564         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4565         if (err)
4566                 return err;
4567
4568         if (!rdev->ops->dump_mpath) {
4569                 err = -EOPNOTSUPP;
4570                 goto out_err;
4571         }
4572
4573         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4574                 err = -EOPNOTSUPP;
4575                 goto out_err;
4576         }
4577
4578         while (1) {
4579                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4580                                       next_hop, &pinfo);
4581                 if (err == -ENOENT)
4582                         break;
4583                 if (err)
4584                         goto out_err;
4585
4586                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4587                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4588                                        wdev->netdev, dst, next_hop,
4589                                        &pinfo) < 0)
4590                         goto out;
4591
4592                 path_idx++;
4593         }
4594
4595
4596  out:
4597         cb->args[2] = path_idx;
4598         err = skb->len;
4599  out_err:
4600         nl80211_finish_wdev_dump(rdev);
4601         return err;
4602 }
4603
4604 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4605 {
4606         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4607         int err;
4608         struct net_device *dev = info->user_ptr[1];
4609         struct mpath_info pinfo;
4610         struct sk_buff *msg;
4611         u8 *dst = NULL;
4612         u8 next_hop[ETH_ALEN];
4613
4614         memset(&pinfo, 0, sizeof(pinfo));
4615
4616         if (!info->attrs[NL80211_ATTR_MAC])
4617                 return -EINVAL;
4618
4619         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4620
4621         if (!rdev->ops->get_mpath)
4622                 return -EOPNOTSUPP;
4623
4624         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4625                 return -EOPNOTSUPP;
4626
4627         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4628         if (err)
4629                 return err;
4630
4631         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4632         if (!msg)
4633                 return -ENOMEM;
4634
4635         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4636                                  dev, dst, next_hop, &pinfo) < 0) {
4637                 nlmsg_free(msg);
4638                 return -ENOBUFS;
4639         }
4640
4641         return genlmsg_reply(msg, info);
4642 }
4643
4644 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4645 {
4646         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4647         struct net_device *dev = info->user_ptr[1];
4648         u8 *dst = NULL;
4649         u8 *next_hop = NULL;
4650
4651         if (!info->attrs[NL80211_ATTR_MAC])
4652                 return -EINVAL;
4653
4654         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4655                 return -EINVAL;
4656
4657         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4658         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4659
4660         if (!rdev->ops->change_mpath)
4661                 return -EOPNOTSUPP;
4662
4663         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4664                 return -EOPNOTSUPP;
4665
4666         return rdev_change_mpath(rdev, dev, dst, next_hop);
4667 }
4668
4669 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4670 {
4671         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4672         struct net_device *dev = info->user_ptr[1];
4673         u8 *dst = NULL;
4674         u8 *next_hop = NULL;
4675
4676         if (!info->attrs[NL80211_ATTR_MAC])
4677                 return -EINVAL;
4678
4679         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4680                 return -EINVAL;
4681
4682         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4683         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4684
4685         if (!rdev->ops->add_mpath)
4686                 return -EOPNOTSUPP;
4687
4688         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4689                 return -EOPNOTSUPP;
4690
4691         return rdev_add_mpath(rdev, dev, dst, next_hop);
4692 }
4693
4694 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4695 {
4696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4697         struct net_device *dev = info->user_ptr[1];
4698         u8 *dst = NULL;
4699
4700         if (info->attrs[NL80211_ATTR_MAC])
4701                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4702
4703         if (!rdev->ops->del_mpath)
4704                 return -EOPNOTSUPP;
4705
4706         return rdev_del_mpath(rdev, dev, dst);
4707 }
4708
4709 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4710 {
4711         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4712         int err;
4713         struct net_device *dev = info->user_ptr[1];
4714         struct mpath_info pinfo;
4715         struct sk_buff *msg;
4716         u8 *dst = NULL;
4717         u8 mpp[ETH_ALEN];
4718
4719         memset(&pinfo, 0, sizeof(pinfo));
4720
4721         if (!info->attrs[NL80211_ATTR_MAC])
4722                 return -EINVAL;
4723
4724         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4725
4726         if (!rdev->ops->get_mpp)
4727                 return -EOPNOTSUPP;
4728
4729         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4730                 return -EOPNOTSUPP;
4731
4732         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4733         if (err)
4734                 return err;
4735
4736         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4737         if (!msg)
4738                 return -ENOMEM;
4739
4740         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4741                                dev, dst, mpp, &pinfo) < 0) {
4742                 nlmsg_free(msg);
4743                 return -ENOBUFS;
4744         }
4745
4746         return genlmsg_reply(msg, info);
4747 }
4748
4749 static int nl80211_dump_mpp(struct sk_buff *skb,
4750                             struct netlink_callback *cb)
4751 {
4752         struct mpath_info pinfo;
4753         struct cfg80211_registered_device *rdev;
4754         struct wireless_dev *wdev;
4755         u8 dst[ETH_ALEN];
4756         u8 mpp[ETH_ALEN];
4757         int path_idx = cb->args[2];
4758         int err;
4759
4760         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4761         if (err)
4762                 return err;
4763
4764         if (!rdev->ops->dump_mpp) {
4765                 err = -EOPNOTSUPP;
4766                 goto out_err;
4767         }
4768
4769         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4770                 err = -EOPNOTSUPP;
4771                 goto out_err;
4772         }
4773
4774         while (1) {
4775                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4776                                     mpp, &pinfo);
4777                 if (err == -ENOENT)
4778                         break;
4779                 if (err)
4780                         goto out_err;
4781
4782                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4783                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4784                                        wdev->netdev, dst, mpp,
4785                                        &pinfo) < 0)
4786                         goto out;
4787
4788                 path_idx++;
4789         }
4790
4791  out:
4792         cb->args[2] = path_idx;
4793         err = skb->len;
4794  out_err:
4795         nl80211_finish_wdev_dump(rdev);
4796         return err;
4797 }
4798
4799 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4800 {
4801         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4802         struct net_device *dev = info->user_ptr[1];
4803         struct wireless_dev *wdev = dev->ieee80211_ptr;
4804         struct bss_parameters params;
4805         int err;
4806
4807         memset(&params, 0, sizeof(params));
4808         /* default to not changing parameters */
4809         params.use_cts_prot = -1;
4810         params.use_short_preamble = -1;
4811         params.use_short_slot_time = -1;
4812         params.ap_isolate = -1;
4813         params.ht_opmode = -1;
4814         params.p2p_ctwindow = -1;
4815         params.p2p_opp_ps = -1;
4816
4817         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4818                 params.use_cts_prot =
4819                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4820         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4821                 params.use_short_preamble =
4822                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4823         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4824                 params.use_short_slot_time =
4825                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4826         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4827                 params.basic_rates =
4828                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4829                 params.basic_rates_len =
4830                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4831         }
4832         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4833                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4834         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4835                 params.ht_opmode =
4836                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4837
4838         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4839                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4840                         return -EINVAL;
4841                 params.p2p_ctwindow =
4842                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4843                 if (params.p2p_ctwindow < 0)
4844                         return -EINVAL;
4845                 if (params.p2p_ctwindow != 0 &&
4846                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4847                         return -EINVAL;
4848         }
4849
4850         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4851                 u8 tmp;
4852
4853                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4854                         return -EINVAL;
4855                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4856                 if (tmp > 1)
4857                         return -EINVAL;
4858                 params.p2p_opp_ps = tmp;
4859                 if (params.p2p_opp_ps &&
4860                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4861                         return -EINVAL;
4862         }
4863
4864         if (!rdev->ops->change_bss)
4865                 return -EOPNOTSUPP;
4866
4867         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4868             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4869                 return -EOPNOTSUPP;
4870
4871         wdev_lock(wdev);
4872         err = rdev_change_bss(rdev, dev, &params);
4873         wdev_unlock(wdev);
4874
4875         return err;
4876 }
4877
4878 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4879         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4880         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4881         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4882         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4883         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4884         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4885         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4886 };
4887
4888 static int parse_reg_rule(struct nlattr *tb[],
4889         struct ieee80211_reg_rule *reg_rule)
4890 {
4891         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4892         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4893
4894         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4895                 return -EINVAL;
4896         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4897                 return -EINVAL;
4898         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4899                 return -EINVAL;
4900         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4901                 return -EINVAL;
4902         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4903                 return -EINVAL;
4904
4905         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4906
4907         freq_range->start_freq_khz =
4908                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4909         freq_range->end_freq_khz =
4910                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4911         freq_range->max_bandwidth_khz =
4912                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4913
4914         power_rule->max_eirp =
4915                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4916
4917         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4918                 power_rule->max_antenna_gain =
4919                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4920
4921         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4922                 reg_rule->dfs_cac_ms =
4923                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4924
4925         return 0;
4926 }
4927
4928 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4929 {
4930         char *data = NULL;
4931         enum nl80211_user_reg_hint_type user_reg_hint_type;
4932
4933         /*
4934          * You should only get this when cfg80211 hasn't yet initialized
4935          * completely when built-in to the kernel right between the time
4936          * window between nl80211_init() and regulatory_init(), if that is
4937          * even possible.
4938          */
4939         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4940                 return -EINPROGRESS;
4941
4942         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4943                 user_reg_hint_type =
4944                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4945         else
4946                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4947
4948         switch (user_reg_hint_type) {
4949         case NL80211_USER_REG_HINT_USER:
4950         case NL80211_USER_REG_HINT_CELL_BASE:
4951                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4952                         return -EINVAL;
4953
4954                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4955                 return regulatory_hint_user(data, user_reg_hint_type);
4956         case NL80211_USER_REG_HINT_INDOOR:
4957                 return regulatory_hint_indoor_user();
4958         default:
4959                 return -EINVAL;
4960         }
4961 }
4962
4963 static int nl80211_get_mesh_config(struct sk_buff *skb,
4964                                    struct genl_info *info)
4965 {
4966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4967         struct net_device *dev = info->user_ptr[1];
4968         struct wireless_dev *wdev = dev->ieee80211_ptr;
4969         struct mesh_config cur_params;
4970         int err = 0;
4971         void *hdr;
4972         struct nlattr *pinfoattr;
4973         struct sk_buff *msg;
4974
4975         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4976                 return -EOPNOTSUPP;
4977
4978         if (!rdev->ops->get_mesh_config)
4979                 return -EOPNOTSUPP;
4980
4981         wdev_lock(wdev);
4982         /* If not connected, get default parameters */
4983         if (!wdev->mesh_id_len)
4984                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4985         else
4986                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4987         wdev_unlock(wdev);
4988
4989         if (err)
4990                 return err;
4991
4992         /* Draw up a netlink message to send back */
4993         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4994         if (!msg)
4995                 return -ENOMEM;
4996         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4997                              NL80211_CMD_GET_MESH_CONFIG);
4998         if (!hdr)
4999                 goto out;
5000         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5001         if (!pinfoattr)
5002                 goto nla_put_failure;
5003         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5004             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5005                         cur_params.dot11MeshRetryTimeout) ||
5006             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5007                         cur_params.dot11MeshConfirmTimeout) ||
5008             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5009                         cur_params.dot11MeshHoldingTimeout) ||
5010             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5011                         cur_params.dot11MeshMaxPeerLinks) ||
5012             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5013                        cur_params.dot11MeshMaxRetries) ||
5014             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5015                        cur_params.dot11MeshTTL) ||
5016             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5017                        cur_params.element_ttl) ||
5018             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5019                        cur_params.auto_open_plinks) ||
5020             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5021                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5022             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5023                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5024             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5025                         cur_params.path_refresh_time) ||
5026             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5027                         cur_params.min_discovery_timeout) ||
5028             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5029                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5030             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5031                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5032             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5033                         cur_params.dot11MeshHWMPperrMinInterval) ||
5034             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5035                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5036             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5037                        cur_params.dot11MeshHWMPRootMode) ||
5038             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5039                         cur_params.dot11MeshHWMPRannInterval) ||
5040             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5041                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5042             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5043                        cur_params.dot11MeshForwarding) ||
5044             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5045                         cur_params.rssi_threshold) ||
5046             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5047                         cur_params.ht_opmode) ||
5048             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5049                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5050             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5051                         cur_params.dot11MeshHWMProotInterval) ||
5052             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5053                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5054             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5055                         cur_params.power_mode) ||
5056             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5057                         cur_params.dot11MeshAwakeWindowDuration) ||
5058             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5059                         cur_params.plink_timeout))
5060                 goto nla_put_failure;
5061         nla_nest_end(msg, pinfoattr);
5062         genlmsg_end(msg, hdr);
5063         return genlmsg_reply(msg, info);
5064
5065  nla_put_failure:
5066         genlmsg_cancel(msg, hdr);
5067  out:
5068         nlmsg_free(msg);
5069         return -ENOBUFS;
5070 }
5071
5072 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5073         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5074         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5075         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5076         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5077         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5078         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5079         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5080         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5081         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5082         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5083         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5084         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5085         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5086         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5087         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5088         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5089         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5090         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5091         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5092         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5093         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5094         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5095         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5096         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5097         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5098         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5099         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5100         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5101 };
5102
5103 static const struct nla_policy
5104         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5105         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5106         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5107         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5108         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5109         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5110         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5111         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5112                                     .len = IEEE80211_MAX_DATA_LEN },
5113         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5114 };
5115
5116 static int nl80211_parse_mesh_config(struct genl_info *info,
5117                                      struct mesh_config *cfg,
5118                                      u32 *mask_out)
5119 {
5120         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5121         u32 mask = 0;
5122
5123 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5124 do {                                                                        \
5125         if (tb[attr]) {                                                     \
5126                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5127                         return -EINVAL;                                     \
5128                 cfg->param = fn(tb[attr]);                                  \
5129                 mask |= (1 << (attr - 1));                                  \
5130         }                                                                   \
5131 } while (0)
5132
5133
5134         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5135                 return -EINVAL;
5136         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5137                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5138                              nl80211_meshconf_params_policy))
5139                 return -EINVAL;
5140
5141         /* This makes sure that there aren't more than 32 mesh config
5142          * parameters (otherwise our bitfield scheme would not work.) */
5143         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5144
5145         /* Fill in the params struct */
5146         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5147                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5148                                   nla_get_u16);
5149         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5150                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5151                                   nla_get_u16);
5152         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5153                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5154                                   nla_get_u16);
5155         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5156                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5157                                   nla_get_u16);
5158         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5159                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5160                                   nla_get_u8);
5161         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5162                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5163         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5164                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5165                                   nla_get_u8);
5166         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5167                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5168                                   nla_get_u8);
5169         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5170                                   1, 255, mask,
5171                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5172                                   nla_get_u32);
5173         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5174                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5175                                   nla_get_u8);
5176         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5177                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5178                                   nla_get_u32);
5179         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5180                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5181                                   nla_get_u16);
5182         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5183                                   1, 65535, mask,
5184                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5185                                   nla_get_u32);
5186         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5187                                   1, 65535, mask,
5188                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5189                                   nla_get_u16);
5190         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5191                                   1, 65535, mask,
5192                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5193                                   nla_get_u16);
5194         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5195                                   dot11MeshHWMPnetDiameterTraversalTime,
5196                                   1, 65535, mask,
5197                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5198                                   nla_get_u16);
5199         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5200                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5201                                   nla_get_u8);
5202         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5203                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5204                                   nla_get_u16);
5205         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5206                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5207                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5208                                   nla_get_u8);
5209         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5210                                   mask, NL80211_MESHCONF_FORWARDING,
5211                                   nla_get_u8);
5212         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5213                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5214                                   nla_get_s32);
5215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5216                                   mask, NL80211_MESHCONF_HT_OPMODE,
5217                                   nla_get_u16);
5218         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5219                                   1, 65535, mask,
5220                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5221                                   nla_get_u32);
5222         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5223                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5224                                   nla_get_u16);
5225         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5226                                   dot11MeshHWMPconfirmationInterval,
5227                                   1, 65535, mask,
5228                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5229                                   nla_get_u16);
5230         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5231                                   NL80211_MESH_POWER_ACTIVE,
5232                                   NL80211_MESH_POWER_MAX,
5233                                   mask, NL80211_MESHCONF_POWER_MODE,
5234                                   nla_get_u32);
5235         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5236                                   0, 65535, mask,
5237                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5238         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5239                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5240                                   nla_get_u32);
5241         if (mask_out)
5242                 *mask_out = mask;
5243
5244         return 0;
5245
5246 #undef FILL_IN_MESH_PARAM_IF_SET
5247 }
5248
5249 static int nl80211_parse_mesh_setup(struct genl_info *info,
5250                                      struct mesh_setup *setup)
5251 {
5252         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5253         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5254
5255         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5256                 return -EINVAL;
5257         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5258                              info->attrs[NL80211_ATTR_MESH_SETUP],
5259                              nl80211_mesh_setup_params_policy))
5260                 return -EINVAL;
5261
5262         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5263                 setup->sync_method =
5264                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5265                  IEEE80211_SYNC_METHOD_VENDOR :
5266                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5267
5268         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5269                 setup->path_sel_proto =
5270                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5271                  IEEE80211_PATH_PROTOCOL_VENDOR :
5272                  IEEE80211_PATH_PROTOCOL_HWMP;
5273
5274         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5275                 setup->path_metric =
5276                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5277                  IEEE80211_PATH_METRIC_VENDOR :
5278                  IEEE80211_PATH_METRIC_AIRTIME;
5279
5280
5281         if (tb[NL80211_MESH_SETUP_IE]) {
5282                 struct nlattr *ieattr =
5283                         tb[NL80211_MESH_SETUP_IE];
5284                 if (!is_valid_ie_attr(ieattr))
5285                         return -EINVAL;
5286                 setup->ie = nla_data(ieattr);
5287                 setup->ie_len = nla_len(ieattr);
5288         }
5289         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5290             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5291                 return -EINVAL;
5292         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5293         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5294         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5295         if (setup->is_secure)
5296                 setup->user_mpm = true;
5297
5298         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5299                 if (!setup->user_mpm)
5300                         return -EINVAL;
5301                 setup->auth_id =
5302                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5303         }
5304
5305         return 0;
5306 }
5307
5308 static int nl80211_update_mesh_config(struct sk_buff *skb,
5309                                       struct genl_info *info)
5310 {
5311         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5312         struct net_device *dev = info->user_ptr[1];
5313         struct wireless_dev *wdev = dev->ieee80211_ptr;
5314         struct mesh_config cfg;
5315         u32 mask;
5316         int err;
5317
5318         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5319                 return -EOPNOTSUPP;
5320
5321         if (!rdev->ops->update_mesh_config)
5322                 return -EOPNOTSUPP;
5323
5324         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5325         if (err)
5326                 return err;
5327
5328         wdev_lock(wdev);
5329         if (!wdev->mesh_id_len)
5330                 err = -ENOLINK;
5331
5332         if (!err)
5333                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5334
5335         wdev_unlock(wdev);
5336
5337         return err;
5338 }
5339
5340 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5341                               struct sk_buff *msg)
5342 {
5343         struct nlattr *nl_reg_rules;
5344         unsigned int i;
5345
5346         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5347             (regdom->dfs_region &&
5348              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5349                 goto nla_put_failure;
5350
5351         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5352         if (!nl_reg_rules)
5353                 goto nla_put_failure;
5354
5355         for (i = 0; i < regdom->n_reg_rules; i++) {
5356                 struct nlattr *nl_reg_rule;
5357                 const struct ieee80211_reg_rule *reg_rule;
5358                 const struct ieee80211_freq_range *freq_range;
5359                 const struct ieee80211_power_rule *power_rule;
5360                 unsigned int max_bandwidth_khz;
5361
5362                 reg_rule = &regdom->reg_rules[i];
5363                 freq_range = &reg_rule->freq_range;
5364                 power_rule = &reg_rule->power_rule;
5365
5366                 nl_reg_rule = nla_nest_start(msg, i);
5367                 if (!nl_reg_rule)
5368                         goto nla_put_failure;
5369
5370                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5371                 if (!max_bandwidth_khz)
5372                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5373                                                                   reg_rule);
5374
5375                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5376                                 reg_rule->flags) ||
5377                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5378                                 freq_range->start_freq_khz) ||
5379                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5380                                 freq_range->end_freq_khz) ||
5381                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5382                                 max_bandwidth_khz) ||
5383                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5384                                 power_rule->max_antenna_gain) ||
5385                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5386                                 power_rule->max_eirp) ||
5387                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5388                                 reg_rule->dfs_cac_ms))
5389                         goto nla_put_failure;
5390
5391                 nla_nest_end(msg, nl_reg_rule);
5392         }
5393
5394         nla_nest_end(msg, nl_reg_rules);
5395         return 0;
5396
5397 nla_put_failure:
5398         return -EMSGSIZE;
5399 }
5400
5401 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5402 {
5403         const struct ieee80211_regdomain *regdom = NULL;
5404         struct cfg80211_registered_device *rdev;
5405         struct wiphy *wiphy = NULL;
5406         struct sk_buff *msg;
5407         void *hdr;
5408
5409         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5410         if (!msg)
5411                 return -ENOBUFS;
5412
5413         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5414                              NL80211_CMD_GET_REG);
5415         if (!hdr)
5416                 goto put_failure;
5417
5418         if (info->attrs[NL80211_ATTR_WIPHY]) {
5419                 bool self_managed;
5420
5421                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5422                 if (IS_ERR(rdev)) {
5423                         nlmsg_free(msg);
5424                         return PTR_ERR(rdev);
5425                 }
5426
5427                 wiphy = &rdev->wiphy;
5428                 self_managed = wiphy->regulatory_flags &
5429                                REGULATORY_WIPHY_SELF_MANAGED;
5430                 regdom = get_wiphy_regdom(wiphy);
5431
5432                 /* a self-managed-reg device must have a private regdom */
5433                 if (WARN_ON(!regdom && self_managed)) {
5434                         nlmsg_free(msg);
5435                         return -EINVAL;
5436                 }
5437
5438                 if (regdom &&
5439                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5440                         goto nla_put_failure;
5441         }
5442
5443         if (!wiphy && reg_last_request_cell_base() &&
5444             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5445                         NL80211_USER_REG_HINT_CELL_BASE))
5446                 goto nla_put_failure;
5447
5448         rcu_read_lock();
5449
5450         if (!regdom)
5451                 regdom = rcu_dereference(cfg80211_regdomain);
5452
5453         if (nl80211_put_regdom(regdom, msg))
5454                 goto nla_put_failure_rcu;
5455
5456         rcu_read_unlock();
5457
5458         genlmsg_end(msg, hdr);
5459         return genlmsg_reply(msg, info);
5460
5461 nla_put_failure_rcu:
5462         rcu_read_unlock();
5463 nla_put_failure:
5464         genlmsg_cancel(msg, hdr);
5465 put_failure:
5466         nlmsg_free(msg);
5467         return -EMSGSIZE;
5468 }
5469
5470 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5471                                u32 seq, int flags, struct wiphy *wiphy,
5472                                const struct ieee80211_regdomain *regdom)
5473 {
5474         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5475                                    NL80211_CMD_GET_REG);
5476
5477         if (!hdr)
5478                 return -1;
5479
5480         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5481
5482         if (nl80211_put_regdom(regdom, msg))
5483                 goto nla_put_failure;
5484
5485         if (!wiphy && reg_last_request_cell_base() &&
5486             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5487                         NL80211_USER_REG_HINT_CELL_BASE))
5488                 goto nla_put_failure;
5489
5490         if (wiphy &&
5491             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5492                 goto nla_put_failure;
5493
5494         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5495             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5496                 goto nla_put_failure;
5497
5498         return genlmsg_end(msg, hdr);
5499
5500 nla_put_failure:
5501         genlmsg_cancel(msg, hdr);
5502         return -EMSGSIZE;
5503 }
5504
5505 static int nl80211_get_reg_dump(struct sk_buff *skb,
5506                                 struct netlink_callback *cb)
5507 {
5508         const struct ieee80211_regdomain *regdom = NULL;
5509         struct cfg80211_registered_device *rdev;
5510         int err, reg_idx, start = cb->args[2];
5511
5512         rtnl_lock();
5513
5514         if (cfg80211_regdomain && start == 0) {
5515                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5516                                           NLM_F_MULTI, NULL,
5517                                           rtnl_dereference(cfg80211_regdomain));
5518                 if (err < 0)
5519                         goto out_err;
5520         }
5521
5522         /* the global regdom is idx 0 */
5523         reg_idx = 1;
5524         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5525                 regdom = get_wiphy_regdom(&rdev->wiphy);
5526                 if (!regdom)
5527                         continue;
5528
5529                 if (++reg_idx <= start)
5530                         continue;
5531
5532                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5533                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5534                 if (err < 0) {
5535                         reg_idx--;
5536                         break;
5537                 }
5538         }
5539
5540         cb->args[2] = reg_idx;
5541         err = skb->len;
5542 out_err:
5543         rtnl_unlock();
5544         return err;
5545 }
5546
5547 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5548 {
5549         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5550         struct nlattr *nl_reg_rule;
5551         char *alpha2;
5552         int rem_reg_rules, r;
5553         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5554         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5555         struct ieee80211_regdomain *rd;
5556
5557         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5558                 return -EINVAL;
5559
5560         if (!info->attrs[NL80211_ATTR_REG_RULES])
5561                 return -EINVAL;
5562
5563         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5564
5565         if (info->attrs[NL80211_ATTR_DFS_REGION])
5566                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5567
5568         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5569                             rem_reg_rules) {
5570                 num_rules++;
5571                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5572                         return -EINVAL;
5573         }
5574
5575         if (!reg_is_valid_request(alpha2))
5576                 return -EINVAL;
5577
5578         size_of_regd = sizeof(struct ieee80211_regdomain) +
5579                        num_rules * sizeof(struct ieee80211_reg_rule);
5580
5581         rd = kzalloc(size_of_regd, GFP_KERNEL);
5582         if (!rd)
5583                 return -ENOMEM;
5584
5585         rd->n_reg_rules = num_rules;
5586         rd->alpha2[0] = alpha2[0];
5587         rd->alpha2[1] = alpha2[1];
5588
5589         /*
5590          * Disable DFS master mode if the DFS region was
5591          * not supported or known on this kernel.
5592          */
5593         if (reg_supported_dfs_region(dfs_region))
5594                 rd->dfs_region = dfs_region;
5595
5596         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5597                             rem_reg_rules) {
5598                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5599                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5600                               reg_rule_policy);
5601                 if (r)
5602                         goto bad_reg;
5603                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5604                 if (r)
5605                         goto bad_reg;
5606
5607                 rule_idx++;
5608
5609                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5610                         r = -EINVAL;
5611                         goto bad_reg;
5612                 }
5613         }
5614
5615         r = set_regdom(rd);
5616         /* set_regdom took ownership */
5617         rd = NULL;
5618
5619  bad_reg:
5620         kfree(rd);
5621         return r;
5622 }
5623
5624 static int validate_scan_freqs(struct nlattr *freqs)
5625 {
5626         struct nlattr *attr1, *attr2;
5627         int n_channels = 0, tmp1, tmp2;
5628
5629         nla_for_each_nested(attr1, freqs, tmp1) {
5630                 n_channels++;
5631                 /*
5632                  * Some hardware has a limited channel list for
5633                  * scanning, and it is pretty much nonsensical
5634                  * to scan for a channel twice, so disallow that
5635                  * and don't require drivers to check that the
5636                  * channel list they get isn't longer than what
5637                  * they can scan, as long as they can scan all
5638                  * the channels they registered at once.
5639                  */
5640                 nla_for_each_nested(attr2, freqs, tmp2)
5641                         if (attr1 != attr2 &&
5642                             nla_get_u32(attr1) == nla_get_u32(attr2))
5643                                 return 0;
5644         }
5645
5646         return n_channels;
5647 }
5648
5649 static int nl80211_parse_random_mac(struct nlattr **attrs,
5650                                     u8 *mac_addr, u8 *mac_addr_mask)
5651 {
5652         int i;
5653
5654         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5655                 memset(mac_addr, 0, ETH_ALEN);
5656                 memset(mac_addr_mask, 0, ETH_ALEN);
5657                 mac_addr[0] = 0x2;
5658                 mac_addr_mask[0] = 0x3;
5659
5660                 return 0;
5661         }
5662
5663         /* need both or none */
5664         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5665                 return -EINVAL;
5666
5667         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5668         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5669
5670         /* don't allow or configure an mcast address */
5671         if (!is_multicast_ether_addr(mac_addr_mask) ||
5672             is_multicast_ether_addr(mac_addr))
5673                 return -EINVAL;
5674
5675         /*
5676          * allow users to pass a MAC address that has bits set outside
5677          * of the mask, but don't bother drivers with having to deal
5678          * with such bits
5679          */
5680         for (i = 0; i < ETH_ALEN; i++)
5681                 mac_addr[i] &= mac_addr_mask[i];
5682
5683         return 0;
5684 }
5685
5686 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5687 {
5688         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5689         struct wireless_dev *wdev = info->user_ptr[1];
5690         struct cfg80211_scan_request *request;
5691         struct nlattr *attr;
5692         struct wiphy *wiphy;
5693         int err, tmp, n_ssids = 0, n_channels, i;
5694         size_t ie_len;
5695
5696         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5697                 return -EINVAL;
5698
5699         wiphy = &rdev->wiphy;
5700
5701         if (!rdev->ops->scan)
5702                 return -EOPNOTSUPP;
5703
5704         if (rdev->scan_req || rdev->scan_msg) {
5705                 err = -EBUSY;
5706                 goto unlock;
5707         }
5708
5709         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5710                 n_channels = validate_scan_freqs(
5711                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5712                 if (!n_channels) {
5713                         err = -EINVAL;
5714                         goto unlock;
5715                 }
5716         } else {
5717                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5718         }
5719
5720         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5721                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5722                         n_ssids++;
5723
5724         if (n_ssids > wiphy->max_scan_ssids) {
5725                 err = -EINVAL;
5726                 goto unlock;
5727         }
5728
5729         if (info->attrs[NL80211_ATTR_IE])
5730                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5731         else
5732                 ie_len = 0;
5733
5734         if (ie_len > wiphy->max_scan_ie_len) {
5735                 err = -EINVAL;
5736                 goto unlock;
5737         }
5738
5739         request = kzalloc(sizeof(*request)
5740                         + sizeof(*request->ssids) * n_ssids
5741                         + sizeof(*request->channels) * n_channels
5742                         + ie_len, GFP_KERNEL);
5743         if (!request) {
5744                 err = -ENOMEM;
5745                 goto unlock;
5746         }
5747
5748         if (n_ssids)
5749                 request->ssids = (void *)&request->channels[n_channels];
5750         request->n_ssids = n_ssids;
5751         if (ie_len) {
5752                 if (request->ssids)
5753                         request->ie = (void *)(request->ssids + n_ssids);
5754                 else
5755                         request->ie = (void *)(request->channels + n_channels);
5756         }
5757
5758         i = 0;
5759         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5760                 /* user specified, bail out if channel not found */
5761                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5762                         struct ieee80211_channel *chan;
5763
5764                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5765
5766                         if (!chan) {
5767                                 err = -EINVAL;
5768                                 goto out_free;
5769                         }
5770
5771                         /* ignore disabled channels */
5772                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5773                                 continue;
5774
5775                         request->channels[i] = chan;
5776                         i++;
5777                 }
5778         } else {
5779                 enum ieee80211_band band;
5780
5781                 /* all channels */
5782                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5783                         int j;
5784                         if (!wiphy->bands[band])
5785                                 continue;
5786                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5787                                 struct ieee80211_channel *chan;
5788
5789                                 chan = &wiphy->bands[band]->channels[j];
5790
5791                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5792                                         continue;
5793
5794                                 request->channels[i] = chan;
5795                                 i++;
5796                         }
5797                 }
5798         }
5799
5800         if (!i) {
5801                 err = -EINVAL;
5802                 goto out_free;
5803         }
5804
5805         request->n_channels = i;
5806
5807         i = 0;
5808         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5809                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5810                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5811                                 err = -EINVAL;
5812                                 goto out_free;
5813                         }
5814                         request->ssids[i].ssid_len = nla_len(attr);
5815                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5816                         i++;
5817                 }
5818         }
5819
5820         if (info->attrs[NL80211_ATTR_IE]) {
5821                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5822                 memcpy((void *)request->ie,
5823                        nla_data(info->attrs[NL80211_ATTR_IE]),
5824                        request->ie_len);
5825         }
5826
5827         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5828                 if (wiphy->bands[i])
5829                         request->rates[i] =
5830                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5831
5832         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5833                 nla_for_each_nested(attr,
5834                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5835                                     tmp) {
5836                         enum ieee80211_band band = nla_type(attr);
5837
5838                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5839                                 err = -EINVAL;
5840                                 goto out_free;
5841                         }
5842
5843                         if (!wiphy->bands[band])
5844                                 continue;
5845
5846                         err = ieee80211_get_ratemask(wiphy->bands[band],
5847                                                      nla_data(attr),
5848                                                      nla_len(attr),
5849                                                      &request->rates[band]);
5850                         if (err)
5851                                 goto out_free;
5852                 }
5853         }
5854
5855         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5856                 request->flags = nla_get_u32(
5857                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5858                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5859                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5860                         err = -EOPNOTSUPP;
5861                         goto out_free;
5862                 }
5863
5864                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5865                         if (!(wiphy->features &
5866                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5867                                 err = -EOPNOTSUPP;
5868                                 goto out_free;
5869                         }
5870
5871                         if (wdev->current_bss) {
5872                                 err = -EOPNOTSUPP;
5873                                 goto out_free;
5874                         }
5875
5876                         err = nl80211_parse_random_mac(info->attrs,
5877                                                        request->mac_addr,
5878                                                        request->mac_addr_mask);
5879                         if (err)
5880                                 goto out_free;
5881                 }
5882         }
5883
5884         request->no_cck =
5885                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5886
5887         request->wdev = wdev;
5888         request->wiphy = &rdev->wiphy;
5889         request->scan_start = jiffies;
5890
5891         rdev->scan_req = request;
5892         err = rdev_scan(rdev, request);
5893
5894         if (!err) {
5895                 nl80211_send_scan_start(rdev, wdev);
5896                 if (wdev->netdev)
5897                         dev_hold(wdev->netdev);
5898         } else {
5899  out_free:
5900                 rdev->scan_req = NULL;
5901                 kfree(request);
5902         }
5903
5904  unlock:
5905         return err;
5906 }
5907
5908 static struct cfg80211_sched_scan_request *
5909 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5910                          struct nlattr **attrs)
5911 {
5912         struct cfg80211_sched_scan_request *request;
5913         struct nlattr *attr;
5914         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5915         u32 interval;
5916         enum ieee80211_band band;
5917         size_t ie_len;
5918         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5919         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5920
5921         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5922                 return ERR_PTR(-EINVAL);
5923
5924         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5925                 return ERR_PTR(-EINVAL);
5926
5927         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5928         if (interval == 0)
5929                 return ERR_PTR(-EINVAL);
5930
5931         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5932                 n_channels = validate_scan_freqs(
5933                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5934                 if (!n_channels)
5935                         return ERR_PTR(-EINVAL);
5936         } else {
5937                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5938         }
5939
5940         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5941                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5942                                     tmp)
5943                         n_ssids++;
5944
5945         if (n_ssids > wiphy->max_sched_scan_ssids)
5946                 return ERR_PTR(-EINVAL);
5947
5948         /*
5949          * First, count the number of 'real' matchsets. Due to an issue with
5950          * the old implementation, matchsets containing only the RSSI attribute
5951          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5952          * RSSI for all matchsets, rather than their own matchset for reporting
5953          * all APs with a strong RSSI. This is needed to be compatible with
5954          * older userspace that treated a matchset with only the RSSI as the
5955          * global RSSI for all other matchsets - if there are other matchsets.
5956          */
5957         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5958                 nla_for_each_nested(attr,
5959                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5960                                     tmp) {
5961                         struct nlattr *rssi;
5962
5963                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5964                                         nla_data(attr), nla_len(attr),
5965                                         nl80211_match_policy);
5966                         if (err)
5967                                 return ERR_PTR(err);
5968                         /* add other standalone attributes here */
5969                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5970                                 n_match_sets++;
5971                                 continue;
5972                         }
5973                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5974                         if (rssi)
5975                                 default_match_rssi = nla_get_s32(rssi);
5976                 }
5977         }
5978
5979         /* However, if there's no other matchset, add the RSSI one */
5980         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5981                 n_match_sets = 1;
5982
5983         if (n_match_sets > wiphy->max_match_sets)
5984                 return ERR_PTR(-EINVAL);
5985
5986         if (attrs[NL80211_ATTR_IE])
5987                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
5988         else
5989                 ie_len = 0;
5990
5991         if (ie_len > wiphy->max_sched_scan_ie_len)
5992                 return ERR_PTR(-EINVAL);
5993
5994         request = kzalloc(sizeof(*request)
5995                         + sizeof(*request->ssids) * n_ssids
5996                         + sizeof(*request->match_sets) * n_match_sets
5997                         + sizeof(*request->channels) * n_channels
5998                         + ie_len, GFP_KERNEL);
5999         if (!request)
6000                 return ERR_PTR(-ENOMEM);
6001
6002         if (n_ssids)
6003                 request->ssids = (void *)&request->channels[n_channels];
6004         request->n_ssids = n_ssids;
6005         if (ie_len) {
6006                 if (request->ssids)
6007                         request->ie = (void *)(request->ssids + n_ssids);
6008                 else
6009                         request->ie = (void *)(request->channels + n_channels);
6010         }
6011
6012         if (n_match_sets) {
6013                 if (request->ie)
6014                         request->match_sets = (void *)(request->ie + ie_len);
6015                 else if (request->ssids)
6016                         request->match_sets =
6017                                 (void *)(request->ssids + n_ssids);
6018                 else
6019                         request->match_sets =
6020                                 (void *)(request->channels + n_channels);
6021         }
6022         request->n_match_sets = n_match_sets;
6023
6024         i = 0;
6025         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6026                 /* user specified, bail out if channel not found */
6027                 nla_for_each_nested(attr,
6028                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6029                                     tmp) {
6030                         struct ieee80211_channel *chan;
6031
6032                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6033
6034                         if (!chan) {
6035                                 err = -EINVAL;
6036                                 goto out_free;
6037                         }
6038
6039                         /* ignore disabled channels */
6040                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6041                                 continue;
6042
6043                         request->channels[i] = chan;
6044                         i++;
6045                 }
6046         } else {
6047                 /* all channels */
6048                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6049                         int j;
6050                         if (!wiphy->bands[band])
6051                                 continue;
6052                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6053                                 struct ieee80211_channel *chan;
6054
6055                                 chan = &wiphy->bands[band]->channels[j];
6056
6057                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6058                                         continue;
6059
6060                                 request->channels[i] = chan;
6061                                 i++;
6062                         }
6063                 }
6064         }
6065
6066         if (!i) {
6067                 err = -EINVAL;
6068                 goto out_free;
6069         }
6070
6071         request->n_channels = i;
6072
6073         i = 0;
6074         if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6075                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6076                                     tmp) {
6077                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6078                                 err = -EINVAL;
6079                                 goto out_free;
6080                         }
6081                         request->ssids[i].ssid_len = nla_len(attr);
6082                         memcpy(request->ssids[i].ssid, nla_data(attr),
6083                                nla_len(attr));
6084                         i++;
6085                 }
6086         }
6087
6088         i = 0;
6089         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6090                 nla_for_each_nested(attr,
6091                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6092                                     tmp) {
6093                         struct nlattr *ssid, *rssi;
6094
6095                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6096                                         nla_data(attr), nla_len(attr),
6097                                         nl80211_match_policy);
6098                         if (err)
6099                                 goto out_free;
6100                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6101                         if (ssid) {
6102                                 if (WARN_ON(i >= n_match_sets)) {
6103                                         /* this indicates a programming error,
6104                                          * the loop above should have verified
6105                                          * things properly
6106                                          */
6107                                         err = -EINVAL;
6108                                         goto out_free;
6109                                 }
6110
6111                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6112                                         err = -EINVAL;
6113                                         goto out_free;
6114                                 }
6115                                 memcpy(request->match_sets[i].ssid.ssid,
6116                                        nla_data(ssid), nla_len(ssid));
6117                                 request->match_sets[i].ssid.ssid_len =
6118                                         nla_len(ssid);
6119                                 /* special attribute - old implemenation w/a */
6120                                 request->match_sets[i].rssi_thold =
6121                                         default_match_rssi;
6122                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6123                                 if (rssi)
6124                                         request->match_sets[i].rssi_thold =
6125                                                 nla_get_s32(rssi);
6126                         }
6127                         i++;
6128                 }
6129
6130                 /* there was no other matchset, so the RSSI one is alone */
6131                 if (i == 0 && n_match_sets)
6132                         request->match_sets[0].rssi_thold = default_match_rssi;
6133
6134                 request->min_rssi_thold = INT_MAX;
6135                 for (i = 0; i < n_match_sets; i++)
6136                         request->min_rssi_thold =
6137                                 min(request->match_sets[i].rssi_thold,
6138                                     request->min_rssi_thold);
6139         } else {
6140                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6141         }
6142
6143         if (ie_len) {
6144                 request->ie_len = ie_len;
6145                 memcpy((void *)request->ie,
6146                        nla_data(attrs[NL80211_ATTR_IE]),
6147                        request->ie_len);
6148         }
6149
6150         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6151                 request->flags = nla_get_u32(
6152                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6153                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6154                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6155                         err = -EOPNOTSUPP;
6156                         goto out_free;
6157                 }
6158
6159                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6160                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6161
6162                         if (!wdev) /* must be net-detect */
6163                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6164
6165                         if (!(wiphy->features & flg)) {
6166                                 err = -EOPNOTSUPP;
6167                                 goto out_free;
6168                         }
6169
6170                         if (wdev && wdev->current_bss) {
6171                                 err = -EOPNOTSUPP;
6172                                 goto out_free;
6173                         }
6174
6175                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6176                                                        request->mac_addr_mask);
6177                         if (err)
6178                                 goto out_free;
6179                 }
6180         }
6181
6182         request->interval = interval;
6183         request->scan_start = jiffies;
6184
6185         return request;
6186
6187 out_free:
6188         kfree(request);
6189         return ERR_PTR(err);
6190 }
6191
6192 static int nl80211_start_sched_scan(struct sk_buff *skb,
6193                                     struct genl_info *info)
6194 {
6195         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6196         struct net_device *dev = info->user_ptr[1];
6197         struct wireless_dev *wdev = dev->ieee80211_ptr;
6198         struct cfg80211_sched_scan_request *sched_scan_req;
6199         int err;
6200
6201         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6202             !rdev->ops->sched_scan_start)
6203                 return -EOPNOTSUPP;
6204
6205         if (rdev->sched_scan_req)
6206                 return -EINPROGRESS;
6207
6208         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6209                                                   info->attrs);
6210
6211         err = PTR_ERR_OR_ZERO(sched_scan_req);
6212         if (err)
6213                 goto out_err;
6214
6215         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6216         if (err)
6217                 goto out_free;
6218
6219         sched_scan_req->dev = dev;
6220         sched_scan_req->wiphy = &rdev->wiphy;
6221
6222         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6223                 sched_scan_req->owner_nlportid = info->snd_portid;
6224
6225         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6226
6227         nl80211_send_sched_scan(rdev, dev,
6228                                 NL80211_CMD_START_SCHED_SCAN);
6229         return 0;
6230
6231 out_free:
6232         kfree(sched_scan_req);
6233 out_err:
6234         return err;
6235 }
6236
6237 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6238                                    struct genl_info *info)
6239 {
6240         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6241
6242         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6243             !rdev->ops->sched_scan_stop)
6244                 return -EOPNOTSUPP;
6245
6246         return __cfg80211_stop_sched_scan(rdev, false);
6247 }
6248
6249 static int nl80211_start_radar_detection(struct sk_buff *skb,
6250                                          struct genl_info *info)
6251 {
6252         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6253         struct net_device *dev = info->user_ptr[1];
6254         struct wireless_dev *wdev = dev->ieee80211_ptr;
6255         struct cfg80211_chan_def chandef;
6256         enum nl80211_dfs_regions dfs_region;
6257         unsigned int cac_time_ms;
6258         int err;
6259
6260         dfs_region = reg_get_dfs_region(wdev->wiphy);
6261         if (dfs_region == NL80211_DFS_UNSET)
6262                 return -EINVAL;
6263
6264         err = nl80211_parse_chandef(rdev, info, &chandef);
6265         if (err)
6266                 return err;
6267
6268         if (netif_carrier_ok(dev))
6269                 return -EBUSY;
6270
6271         if (wdev->cac_started)
6272                 return -EBUSY;
6273
6274         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6275                                             wdev->iftype);
6276         if (err < 0)
6277                 return err;
6278
6279         if (err == 0)
6280                 return -EINVAL;
6281
6282         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6283                 return -EINVAL;
6284
6285         if (!rdev->ops->start_radar_detection)
6286                 return -EOPNOTSUPP;
6287
6288         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6289         if (WARN_ON(!cac_time_ms))
6290                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6291
6292         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6293                                                cac_time_ms);
6294         if (!err) {
6295                 wdev->chandef = chandef;
6296                 wdev->cac_started = true;
6297                 wdev->cac_start_time = jiffies;
6298                 wdev->cac_time_ms = cac_time_ms;
6299         }
6300         return err;
6301 }
6302
6303 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6304 {
6305         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6306         struct net_device *dev = info->user_ptr[1];
6307         struct wireless_dev *wdev = dev->ieee80211_ptr;
6308         struct cfg80211_csa_settings params;
6309         /* csa_attrs is defined static to avoid waste of stack size - this
6310          * function is called under RTNL lock, so this should not be a problem.
6311          */
6312         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6313         int err;
6314         bool need_new_beacon = false;
6315         int len, i;
6316         u32 cs_count;
6317
6318         if (!rdev->ops->channel_switch ||
6319             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6320                 return -EOPNOTSUPP;
6321
6322         switch (dev->ieee80211_ptr->iftype) {
6323         case NL80211_IFTYPE_AP:
6324         case NL80211_IFTYPE_P2P_GO:
6325                 need_new_beacon = true;
6326
6327                 /* useless if AP is not running */
6328                 if (!wdev->beacon_interval)
6329                         return -ENOTCONN;
6330                 break;
6331         case NL80211_IFTYPE_ADHOC:
6332                 if (!wdev->ssid_len)
6333                         return -ENOTCONN;
6334                 break;
6335         case NL80211_IFTYPE_MESH_POINT:
6336                 if (!wdev->mesh_id_len)
6337                         return -ENOTCONN;
6338                 break;
6339         default:
6340                 return -EOPNOTSUPP;
6341         }
6342
6343         memset(&params, 0, sizeof(params));
6344
6345         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6346             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6347                 return -EINVAL;
6348
6349         /* only important for AP, IBSS and mesh create IEs internally */
6350         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6351                 return -EINVAL;
6352
6353         /* Even though the attribute is u32, the specification says
6354          * u8, so let's make sure we don't overflow.
6355          */
6356         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6357         if (cs_count > 255)
6358                 return -EINVAL;
6359
6360         params.count = cs_count;
6361
6362         if (!need_new_beacon)
6363                 goto skip_beacons;
6364
6365         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6366         if (err)
6367                 return err;
6368
6369         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6370                                info->attrs[NL80211_ATTR_CSA_IES],
6371                                nl80211_policy);
6372         if (err)
6373                 return err;
6374
6375         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6376         if (err)
6377                 return err;
6378
6379         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6380                 return -EINVAL;
6381
6382         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6383         if (!len || (len % sizeof(u16)))
6384                 return -EINVAL;
6385
6386         params.n_counter_offsets_beacon = len / sizeof(u16);
6387         if (rdev->wiphy.max_num_csa_counters &&
6388             (params.n_counter_offsets_beacon >
6389              rdev->wiphy.max_num_csa_counters))
6390                 return -EINVAL;
6391
6392         params.counter_offsets_beacon =
6393                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6394
6395         /* sanity checks - counters should fit and be the same */
6396         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6397                 u16 offset = params.counter_offsets_beacon[i];
6398
6399                 if (offset >= params.beacon_csa.tail_len)
6400                         return -EINVAL;
6401
6402                 if (params.beacon_csa.tail[offset] != params.count)
6403                         return -EINVAL;
6404         }
6405
6406         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6407                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6408                 if (!len || (len % sizeof(u16)))
6409                         return -EINVAL;
6410
6411                 params.n_counter_offsets_presp = len / sizeof(u16);
6412                 if (rdev->wiphy.max_num_csa_counters &&
6413                     (params.n_counter_offsets_beacon >
6414                      rdev->wiphy.max_num_csa_counters))
6415                         return -EINVAL;
6416
6417                 params.counter_offsets_presp =
6418                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6419
6420                 /* sanity checks - counters should fit and be the same */
6421                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6422                         u16 offset = params.counter_offsets_presp[i];
6423
6424                         if (offset >= params.beacon_csa.probe_resp_len)
6425                                 return -EINVAL;
6426
6427                         if (params.beacon_csa.probe_resp[offset] !=
6428                             params.count)
6429                                 return -EINVAL;
6430                 }
6431         }
6432
6433 skip_beacons:
6434         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6435         if (err)
6436                 return err;
6437
6438         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6439                                      wdev->iftype))
6440                 return -EINVAL;
6441
6442         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6443                                             &params.chandef,
6444                                             wdev->iftype);
6445         if (err < 0)
6446                 return err;
6447
6448         if (err > 0)
6449                 params.radar_required = true;
6450
6451         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6452                 params.block_tx = true;
6453
6454         wdev_lock(wdev);
6455         err = rdev_channel_switch(rdev, dev, &params);
6456         wdev_unlock(wdev);
6457
6458         return err;
6459 }
6460
6461 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6462                             u32 seq, int flags,
6463                             struct cfg80211_registered_device *rdev,
6464                             struct wireless_dev *wdev,
6465                             struct cfg80211_internal_bss *intbss)
6466 {
6467         struct cfg80211_bss *res = &intbss->pub;
6468         const struct cfg80211_bss_ies *ies;
6469         void *hdr;
6470         struct nlattr *bss;
6471
6472         ASSERT_WDEV_LOCK(wdev);
6473
6474         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6475                              NL80211_CMD_NEW_SCAN_RESULTS);
6476         if (!hdr)
6477                 return -1;
6478
6479         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6480
6481         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6482                 goto nla_put_failure;
6483         if (wdev->netdev &&
6484             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6485                 goto nla_put_failure;
6486         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6487                 goto nla_put_failure;
6488
6489         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6490         if (!bss)
6491                 goto nla_put_failure;
6492         if ((!is_zero_ether_addr(res->bssid) &&
6493              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6494                 goto nla_put_failure;
6495
6496         rcu_read_lock();
6497         /* indicate whether we have probe response data or not */
6498         if (rcu_access_pointer(res->proberesp_ies) &&
6499             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6500                 goto fail_unlock_rcu;
6501
6502         /* this pointer prefers to be pointed to probe response data
6503          * but is always valid
6504          */
6505         ies = rcu_dereference(res->ies);
6506         if (ies) {
6507                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6508                         goto fail_unlock_rcu;
6509                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6510                                         ies->len, ies->data))
6511                         goto fail_unlock_rcu;
6512         }
6513
6514         /* and this pointer is always (unless driver didn't know) beacon data */
6515         ies = rcu_dereference(res->beacon_ies);
6516         if (ies && ies->from_beacon) {
6517                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6518                         goto fail_unlock_rcu;
6519                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6520                                         ies->len, ies->data))
6521                         goto fail_unlock_rcu;
6522         }
6523         rcu_read_unlock();
6524
6525         if (res->beacon_interval &&
6526             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6527                 goto nla_put_failure;
6528         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6529             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6530             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6531             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6532                         jiffies_to_msecs(jiffies - intbss->ts)))
6533                 goto nla_put_failure;
6534
6535         switch (rdev->wiphy.signal_type) {
6536         case CFG80211_SIGNAL_TYPE_MBM:
6537                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6538                         goto nla_put_failure;
6539                 break;
6540         case CFG80211_SIGNAL_TYPE_UNSPEC:
6541                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6542                         goto nla_put_failure;
6543                 break;
6544         default:
6545                 break;
6546         }
6547
6548         switch (wdev->iftype) {
6549         case NL80211_IFTYPE_P2P_CLIENT:
6550         case NL80211_IFTYPE_STATION:
6551                 if (intbss == wdev->current_bss &&
6552                     nla_put_u32(msg, NL80211_BSS_STATUS,
6553                                 NL80211_BSS_STATUS_ASSOCIATED))
6554                         goto nla_put_failure;
6555                 break;
6556         case NL80211_IFTYPE_ADHOC:
6557                 if (intbss == wdev->current_bss &&
6558                     nla_put_u32(msg, NL80211_BSS_STATUS,
6559                                 NL80211_BSS_STATUS_IBSS_JOINED))
6560                         goto nla_put_failure;
6561                 break;
6562         default:
6563                 break;
6564         }
6565
6566         nla_nest_end(msg, bss);
6567
6568         return genlmsg_end(msg, hdr);
6569
6570  fail_unlock_rcu:
6571         rcu_read_unlock();
6572  nla_put_failure:
6573         genlmsg_cancel(msg, hdr);
6574         return -EMSGSIZE;
6575 }
6576
6577 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6578 {
6579         struct cfg80211_registered_device *rdev;
6580         struct cfg80211_internal_bss *scan;
6581         struct wireless_dev *wdev;
6582         int start = cb->args[2], idx = 0;
6583         int err;
6584
6585         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6586         if (err)
6587                 return err;
6588
6589         wdev_lock(wdev);
6590         spin_lock_bh(&rdev->bss_lock);
6591         cfg80211_bss_expire(rdev);
6592
6593         cb->seq = rdev->bss_generation;
6594
6595         list_for_each_entry(scan, &rdev->bss_list, list) {
6596                 if (++idx <= start)
6597                         continue;
6598                 if (nl80211_send_bss(skb, cb,
6599                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6600                                 rdev, wdev, scan) < 0) {
6601                         idx--;
6602                         break;
6603                 }
6604         }
6605
6606         spin_unlock_bh(&rdev->bss_lock);
6607         wdev_unlock(wdev);
6608
6609         cb->args[2] = idx;
6610         nl80211_finish_wdev_dump(rdev);
6611
6612         return skb->len;
6613 }
6614
6615 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6616                                int flags, struct net_device *dev,
6617                                bool allow_radio_stats,
6618                                struct survey_info *survey)
6619 {
6620         void *hdr;
6621         struct nlattr *infoattr;
6622
6623         /* skip radio stats if userspace didn't request them */
6624         if (!survey->channel && !allow_radio_stats)
6625                 return 0;
6626
6627         hdr = nl80211hdr_put(msg, portid, seq, flags,
6628                              NL80211_CMD_NEW_SURVEY_RESULTS);
6629         if (!hdr)
6630                 return -ENOMEM;
6631
6632         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6633                 goto nla_put_failure;
6634
6635         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6636         if (!infoattr)
6637                 goto nla_put_failure;
6638
6639         if (survey->channel &&
6640             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6641                         survey->channel->center_freq))
6642                 goto nla_put_failure;
6643
6644         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6645             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6646                 goto nla_put_failure;
6647         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6648             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6649                 goto nla_put_failure;
6650         if ((survey->filled & SURVEY_INFO_TIME) &&
6651             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6652                         survey->time))
6653                 goto nla_put_failure;
6654         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6655             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6656                         survey->time_busy))
6657                 goto nla_put_failure;
6658         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6659             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6660                         survey->time_ext_busy))
6661                 goto nla_put_failure;
6662         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6663             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6664                         survey->time_rx))
6665                 goto nla_put_failure;
6666         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6667             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6668                         survey->time_tx))
6669                 goto nla_put_failure;
6670         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6671             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6672                         survey->time_scan))
6673                 goto nla_put_failure;
6674
6675         nla_nest_end(msg, infoattr);
6676
6677         return genlmsg_end(msg, hdr);
6678
6679  nla_put_failure:
6680         genlmsg_cancel(msg, hdr);
6681         return -EMSGSIZE;
6682 }
6683
6684 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6685 {
6686         struct survey_info survey;
6687         struct cfg80211_registered_device *rdev;
6688         struct wireless_dev *wdev;
6689         int survey_idx = cb->args[2];
6690         int res;
6691         bool radio_stats;
6692
6693         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6694         if (res)
6695                 return res;
6696
6697         /* prepare_wdev_dump parsed the attributes */
6698         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6699
6700         if (!wdev->netdev) {
6701                 res = -EINVAL;
6702                 goto out_err;
6703         }
6704
6705         if (!rdev->ops->dump_survey) {
6706                 res = -EOPNOTSUPP;
6707                 goto out_err;
6708         }
6709
6710         while (1) {
6711                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6712                 if (res == -ENOENT)
6713                         break;
6714                 if (res)
6715                         goto out_err;
6716
6717                 /* don't send disabled channels, but do send non-channel data */
6718                 if (survey.channel &&
6719                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6720                         survey_idx++;
6721                         continue;
6722                 }
6723
6724                 if (nl80211_send_survey(skb,
6725                                 NETLINK_CB(cb->skb).portid,
6726                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6727                                 wdev->netdev, radio_stats, &survey) < 0)
6728                         goto out;
6729                 survey_idx++;
6730         }
6731
6732  out:
6733         cb->args[2] = survey_idx;
6734         res = skb->len;
6735  out_err:
6736         nl80211_finish_wdev_dump(rdev);
6737         return res;
6738 }
6739
6740 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6741 {
6742         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6743                                   NL80211_WPA_VERSION_2));
6744 }
6745
6746 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6747 {
6748         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6749         struct net_device *dev = info->user_ptr[1];
6750         struct ieee80211_channel *chan;
6751         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6752         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6753         enum nl80211_auth_type auth_type;
6754         struct key_parse key;
6755         bool local_state_change;
6756
6757         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6758                 return -EINVAL;
6759
6760         if (!info->attrs[NL80211_ATTR_MAC])
6761                 return -EINVAL;
6762
6763         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6764                 return -EINVAL;
6765
6766         if (!info->attrs[NL80211_ATTR_SSID])
6767                 return -EINVAL;
6768
6769         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6770                 return -EINVAL;
6771
6772         err = nl80211_parse_key(info, &key);
6773         if (err)
6774                 return err;
6775
6776         if (key.idx >= 0) {
6777                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6778                         return -EINVAL;
6779                 if (!key.p.key || !key.p.key_len)
6780                         return -EINVAL;
6781                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6782                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6783                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6784                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6785                         return -EINVAL;
6786                 if (key.idx > 4)
6787                         return -EINVAL;
6788         } else {
6789                 key.p.key_len = 0;
6790                 key.p.key = NULL;
6791         }
6792
6793         if (key.idx >= 0) {
6794                 int i;
6795                 bool ok = false;
6796                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6797                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6798                                 ok = true;
6799                                 break;
6800                         }
6801                 }
6802                 if (!ok)
6803                         return -EINVAL;
6804         }
6805
6806         if (!rdev->ops->auth)
6807                 return -EOPNOTSUPP;
6808
6809         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6810             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6811                 return -EOPNOTSUPP;
6812
6813         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6814         chan = nl80211_get_valid_chan(&rdev->wiphy,
6815                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6816         if (!chan)
6817                 return -EINVAL;
6818
6819         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6820         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6821
6822         if (info->attrs[NL80211_ATTR_IE]) {
6823                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6824                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6825         }
6826
6827         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6828         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6829                 return -EINVAL;
6830
6831         if (auth_type == NL80211_AUTHTYPE_SAE &&
6832             !info->attrs[NL80211_ATTR_SAE_DATA])
6833                 return -EINVAL;
6834
6835         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6836                 if (auth_type != NL80211_AUTHTYPE_SAE)
6837                         return -EINVAL;
6838                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6839                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6840                 /* need to include at least Auth Transaction and Status Code */
6841                 if (sae_data_len < 4)
6842                         return -EINVAL;
6843         }
6844
6845         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6846
6847         /*
6848          * Since we no longer track auth state, ignore
6849          * requests to only change local state.
6850          */
6851         if (local_state_change)
6852                 return 0;
6853
6854         wdev_lock(dev->ieee80211_ptr);
6855         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6856                                  ssid, ssid_len, ie, ie_len,
6857                                  key.p.key, key.p.key_len, key.idx,
6858                                  sae_data, sae_data_len);
6859         wdev_unlock(dev->ieee80211_ptr);
6860         return err;
6861 }
6862
6863 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6864                                    struct genl_info *info,
6865                                    struct cfg80211_crypto_settings *settings,
6866                                    int cipher_limit)
6867 {
6868         memset(settings, 0, sizeof(*settings));
6869
6870         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6871
6872         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6873                 u16 proto;
6874                 proto = nla_get_u16(
6875                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6876                 settings->control_port_ethertype = cpu_to_be16(proto);
6877                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6878                     proto != ETH_P_PAE)
6879                         return -EINVAL;
6880                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6881                         settings->control_port_no_encrypt = true;
6882         } else
6883                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6884
6885         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6886                 void *data;
6887                 int len, i;
6888
6889                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6890                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6891                 settings->n_ciphers_pairwise = len / sizeof(u32);
6892
6893                 if (len % sizeof(u32))
6894                         return -EINVAL;
6895
6896                 if (settings->n_ciphers_pairwise > cipher_limit)
6897                         return -EINVAL;
6898
6899                 memcpy(settings->ciphers_pairwise, data, len);
6900
6901                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6902                         if (!cfg80211_supported_cipher_suite(
6903                                         &rdev->wiphy,
6904                                         settings->ciphers_pairwise[i]))
6905                                 return -EINVAL;
6906         }
6907
6908         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6909                 settings->cipher_group =
6910                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6911                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6912                                                      settings->cipher_group))
6913                         return -EINVAL;
6914         }
6915
6916         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6917                 settings->wpa_versions =
6918                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6919                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6920                         return -EINVAL;
6921         }
6922
6923         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6924                 void *data;
6925                 int len;
6926
6927                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6928                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6929                 settings->n_akm_suites = len / sizeof(u32);
6930
6931                 if (len % sizeof(u32))
6932                         return -EINVAL;
6933
6934                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6935                         return -EINVAL;
6936
6937                 memcpy(settings->akm_suites, data, len);
6938         }
6939
6940         return 0;
6941 }
6942
6943 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6944 {
6945         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6946         struct net_device *dev = info->user_ptr[1];
6947         struct ieee80211_channel *chan;
6948         struct cfg80211_assoc_request req = {};
6949         const u8 *bssid, *ssid;
6950         int err, ssid_len = 0;
6951
6952         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6953                 return -EINVAL;
6954
6955         if (!info->attrs[NL80211_ATTR_MAC] ||
6956             !info->attrs[NL80211_ATTR_SSID] ||
6957             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6958                 return -EINVAL;
6959
6960         if (!rdev->ops->assoc)
6961                 return -EOPNOTSUPP;
6962
6963         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6964             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6965                 return -EOPNOTSUPP;
6966
6967         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6968
6969         chan = nl80211_get_valid_chan(&rdev->wiphy,
6970                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6971         if (!chan)
6972                 return -EINVAL;
6973
6974         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6975         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6976
6977         if (info->attrs[NL80211_ATTR_IE]) {
6978                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6979                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6980         }
6981
6982         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6983                 enum nl80211_mfp mfp =
6984                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6985                 if (mfp == NL80211_MFP_REQUIRED)
6986                         req.use_mfp = true;
6987                 else if (mfp != NL80211_MFP_NO)
6988                         return -EINVAL;
6989         }
6990
6991         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6992                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6993
6994         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6995                 req.flags |= ASSOC_REQ_DISABLE_HT;
6996
6997         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6998                 memcpy(&req.ht_capa_mask,
6999                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7000                        sizeof(req.ht_capa_mask));
7001
7002         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7003                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7004                         return -EINVAL;
7005                 memcpy(&req.ht_capa,
7006                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7007                        sizeof(req.ht_capa));
7008         }
7009
7010         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7011                 req.flags |= ASSOC_REQ_DISABLE_VHT;
7012
7013         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7014                 memcpy(&req.vht_capa_mask,
7015                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7016                        sizeof(req.vht_capa_mask));
7017
7018         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7019                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7020                         return -EINVAL;
7021                 memcpy(&req.vht_capa,
7022                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7023                        sizeof(req.vht_capa));
7024         }
7025
7026         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7027                 if (!(rdev->wiphy.features &
7028                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7029                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7030                         return -EINVAL;
7031                 req.flags |= ASSOC_REQ_USE_RRM;
7032         }
7033
7034         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7035         if (!err) {
7036                 wdev_lock(dev->ieee80211_ptr);
7037                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7038                                           ssid, ssid_len, &req);
7039                 wdev_unlock(dev->ieee80211_ptr);
7040         }
7041
7042         return err;
7043 }
7044
7045 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7046 {
7047         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7048         struct net_device *dev = info->user_ptr[1];
7049         const u8 *ie = NULL, *bssid;
7050         int ie_len = 0, err;
7051         u16 reason_code;
7052         bool local_state_change;
7053
7054         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7055                 return -EINVAL;
7056
7057         if (!info->attrs[NL80211_ATTR_MAC])
7058                 return -EINVAL;
7059
7060         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7061                 return -EINVAL;
7062
7063         if (!rdev->ops->deauth)
7064                 return -EOPNOTSUPP;
7065
7066         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7067             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7068                 return -EOPNOTSUPP;
7069
7070         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7071
7072         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7073         if (reason_code == 0) {
7074                 /* Reason Code 0 is reserved */
7075                 return -EINVAL;
7076         }
7077
7078         if (info->attrs[NL80211_ATTR_IE]) {
7079                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7080                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7081         }
7082
7083         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7084
7085         wdev_lock(dev->ieee80211_ptr);
7086         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7087                                    local_state_change);
7088         wdev_unlock(dev->ieee80211_ptr);
7089         return err;
7090 }
7091
7092 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7093 {
7094         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7095         struct net_device *dev = info->user_ptr[1];
7096         const u8 *ie = NULL, *bssid;
7097         int ie_len = 0, err;
7098         u16 reason_code;
7099         bool local_state_change;
7100
7101         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7102                 return -EINVAL;
7103
7104         if (!info->attrs[NL80211_ATTR_MAC])
7105                 return -EINVAL;
7106
7107         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7108                 return -EINVAL;
7109
7110         if (!rdev->ops->disassoc)
7111                 return -EOPNOTSUPP;
7112
7113         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7114             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7115                 return -EOPNOTSUPP;
7116
7117         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7118
7119         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7120         if (reason_code == 0) {
7121                 /* Reason Code 0 is reserved */
7122                 return -EINVAL;
7123         }
7124
7125         if (info->attrs[NL80211_ATTR_IE]) {
7126                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7127                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7128         }
7129
7130         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7131
7132         wdev_lock(dev->ieee80211_ptr);
7133         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7134                                      local_state_change);
7135         wdev_unlock(dev->ieee80211_ptr);
7136         return err;
7137 }
7138
7139 static bool
7140 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7141                          int mcast_rate[IEEE80211_NUM_BANDS],
7142                          int rateval)
7143 {
7144         struct wiphy *wiphy = &rdev->wiphy;
7145         bool found = false;
7146         int band, i;
7147
7148         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7149                 struct ieee80211_supported_band *sband;
7150
7151                 sband = wiphy->bands[band];
7152                 if (!sband)
7153                         continue;
7154
7155                 for (i = 0; i < sband->n_bitrates; i++) {
7156                         if (sband->bitrates[i].bitrate == rateval) {
7157                                 mcast_rate[band] = i + 1;
7158                                 found = true;
7159                                 break;
7160                         }
7161                 }
7162         }
7163
7164         return found;
7165 }
7166
7167 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7168 {
7169         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7170         struct net_device *dev = info->user_ptr[1];
7171         struct cfg80211_ibss_params ibss;
7172         struct wiphy *wiphy;
7173         struct cfg80211_cached_keys *connkeys = NULL;
7174         int err;
7175
7176         memset(&ibss, 0, sizeof(ibss));
7177
7178         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7179                 return -EINVAL;
7180
7181         if (!info->attrs[NL80211_ATTR_SSID] ||
7182             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7183                 return -EINVAL;
7184
7185         ibss.beacon_interval = 100;
7186
7187         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7188                 ibss.beacon_interval =
7189                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7190                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7191                         return -EINVAL;
7192         }
7193
7194         if (!rdev->ops->join_ibss)
7195                 return -EOPNOTSUPP;
7196
7197         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7198                 return -EOPNOTSUPP;
7199
7200         wiphy = &rdev->wiphy;
7201
7202         if (info->attrs[NL80211_ATTR_MAC]) {
7203                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7204
7205                 if (!is_valid_ether_addr(ibss.bssid))
7206                         return -EINVAL;
7207         }
7208         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7209         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7210
7211         if (info->attrs[NL80211_ATTR_IE]) {
7212                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7213                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7214         }
7215
7216         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7217         if (err)
7218                 return err;
7219
7220         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7221                                      NL80211_IFTYPE_ADHOC))
7222                 return -EINVAL;
7223
7224         switch (ibss.chandef.width) {
7225         case NL80211_CHAN_WIDTH_5:
7226         case NL80211_CHAN_WIDTH_10:
7227         case NL80211_CHAN_WIDTH_20_NOHT:
7228                 break;
7229         case NL80211_CHAN_WIDTH_20:
7230         case NL80211_CHAN_WIDTH_40:
7231                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7232                         break;
7233         default:
7234                 return -EINVAL;
7235         }
7236
7237         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7238         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7239
7240         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7241                 u8 *rates =
7242                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7243                 int n_rates =
7244                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7245                 struct ieee80211_supported_band *sband =
7246                         wiphy->bands[ibss.chandef.chan->band];
7247
7248                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7249                                              &ibss.basic_rates);
7250                 if (err)
7251                         return err;
7252         }
7253
7254         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7255                 memcpy(&ibss.ht_capa_mask,
7256                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7257                        sizeof(ibss.ht_capa_mask));
7258
7259         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7260                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7261                         return -EINVAL;
7262                 memcpy(&ibss.ht_capa,
7263                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7264                        sizeof(ibss.ht_capa));
7265         }
7266
7267         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7268             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7269                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7270                 return -EINVAL;
7271
7272         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7273                 bool no_ht = false;
7274
7275                 connkeys = nl80211_parse_connkeys(rdev,
7276                                           info->attrs[NL80211_ATTR_KEYS],
7277                                           &no_ht);
7278                 if (IS_ERR(connkeys))
7279                         return PTR_ERR(connkeys);
7280
7281                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7282                     no_ht) {
7283                         kfree(connkeys);
7284                         return -EINVAL;
7285                 }
7286         }
7287
7288         ibss.control_port =
7289                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7290
7291         ibss.userspace_handles_dfs =
7292                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7293
7294         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7295         if (err)
7296                 kzfree(connkeys);
7297         return err;
7298 }
7299
7300 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7301 {
7302         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7303         struct net_device *dev = info->user_ptr[1];
7304
7305         if (!rdev->ops->leave_ibss)
7306                 return -EOPNOTSUPP;
7307
7308         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7309                 return -EOPNOTSUPP;
7310
7311         return cfg80211_leave_ibss(rdev, dev, false);
7312 }
7313
7314 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7315 {
7316         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7317         struct net_device *dev = info->user_ptr[1];
7318         int mcast_rate[IEEE80211_NUM_BANDS];
7319         u32 nla_rate;
7320         int err;
7321
7322         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7323             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7324                 return -EOPNOTSUPP;
7325
7326         if (!rdev->ops->set_mcast_rate)
7327                 return -EOPNOTSUPP;
7328
7329         memset(mcast_rate, 0, sizeof(mcast_rate));
7330
7331         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7332                 return -EINVAL;
7333
7334         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7335         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7336                 return -EINVAL;
7337
7338         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7339
7340         return err;
7341 }
7342
7343 static struct sk_buff *
7344 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7345                             int approxlen, u32 portid, u32 seq,
7346                             enum nl80211_commands cmd,
7347                             enum nl80211_attrs attr,
7348                             const struct nl80211_vendor_cmd_info *info,
7349                             gfp_t gfp)
7350 {
7351         struct sk_buff *skb;
7352         void *hdr;
7353         struct nlattr *data;
7354
7355         skb = nlmsg_new(approxlen + 100, gfp);
7356         if (!skb)
7357                 return NULL;
7358
7359         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7360         if (!hdr) {
7361                 kfree_skb(skb);
7362                 return NULL;
7363         }
7364
7365         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7366                 goto nla_put_failure;
7367
7368         if (info) {
7369                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7370                                 info->vendor_id))
7371                         goto nla_put_failure;
7372                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7373                                 info->subcmd))
7374                         goto nla_put_failure;
7375         }
7376
7377         data = nla_nest_start(skb, attr);
7378
7379         ((void **)skb->cb)[0] = rdev;
7380         ((void **)skb->cb)[1] = hdr;
7381         ((void **)skb->cb)[2] = data;
7382
7383         return skb;
7384
7385  nla_put_failure:
7386         kfree_skb(skb);
7387         return NULL;
7388 }
7389
7390 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7391                                            enum nl80211_commands cmd,
7392                                            enum nl80211_attrs attr,
7393                                            int vendor_event_idx,
7394                                            int approxlen, gfp_t gfp)
7395 {
7396         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7397         const struct nl80211_vendor_cmd_info *info;
7398
7399         switch (cmd) {
7400         case NL80211_CMD_TESTMODE:
7401                 if (WARN_ON(vendor_event_idx != -1))
7402                         return NULL;
7403                 info = NULL;
7404                 break;
7405         case NL80211_CMD_VENDOR:
7406                 if (WARN_ON(vendor_event_idx < 0 ||
7407                             vendor_event_idx >= wiphy->n_vendor_events))
7408                         return NULL;
7409                 info = &wiphy->vendor_events[vendor_event_idx];
7410                 break;
7411         default:
7412                 WARN_ON(1);
7413                 return NULL;
7414         }
7415
7416         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7417                                            cmd, attr, info, gfp);
7418 }
7419 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7420
7421 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7422 {
7423         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7424         void *hdr = ((void **)skb->cb)[1];
7425         struct nlattr *data = ((void **)skb->cb)[2];
7426         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7427
7428         /* clear CB data for netlink core to own from now on */
7429         memset(skb->cb, 0, sizeof(skb->cb));
7430
7431         nla_nest_end(skb, data);
7432         genlmsg_end(skb, hdr);
7433
7434         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7435                 mcgrp = NL80211_MCGRP_VENDOR;
7436
7437         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7438                                 mcgrp, gfp);
7439 }
7440 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7441
7442 #ifdef CONFIG_NL80211_TESTMODE
7443 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7444 {
7445         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7446         struct wireless_dev *wdev =
7447                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7448         int err;
7449
7450         if (!rdev->ops->testmode_cmd)
7451                 return -EOPNOTSUPP;
7452
7453         if (IS_ERR(wdev)) {
7454                 err = PTR_ERR(wdev);
7455                 if (err != -EINVAL)
7456                         return err;
7457                 wdev = NULL;
7458         } else if (wdev->wiphy != &rdev->wiphy) {
7459                 return -EINVAL;
7460         }
7461
7462         if (!info->attrs[NL80211_ATTR_TESTDATA])
7463                 return -EINVAL;
7464
7465         rdev->cur_cmd_info = info;
7466         err = rdev_testmode_cmd(rdev, wdev,
7467                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7468                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7469         rdev->cur_cmd_info = NULL;
7470
7471         return err;
7472 }
7473
7474 static int nl80211_testmode_dump(struct sk_buff *skb,
7475                                  struct netlink_callback *cb)
7476 {
7477         struct cfg80211_registered_device *rdev;
7478         int err;
7479         long phy_idx;
7480         void *data = NULL;
7481         int data_len = 0;
7482
7483         rtnl_lock();
7484
7485         if (cb->args[0]) {
7486                 /*
7487                  * 0 is a valid index, but not valid for args[0],
7488                  * so we need to offset by 1.
7489                  */
7490                 phy_idx = cb->args[0] - 1;
7491         } else {
7492                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7493                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7494                                   nl80211_policy);
7495                 if (err)
7496                         goto out_err;
7497
7498                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7499                                                   nl80211_fam.attrbuf);
7500                 if (IS_ERR(rdev)) {
7501                         err = PTR_ERR(rdev);
7502                         goto out_err;
7503                 }
7504                 phy_idx = rdev->wiphy_idx;
7505                 rdev = NULL;
7506
7507                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7508                         cb->args[1] =
7509                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7510         }
7511
7512         if (cb->args[1]) {
7513                 data = nla_data((void *)cb->args[1]);
7514                 data_len = nla_len((void *)cb->args[1]);
7515         }
7516
7517         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7518         if (!rdev) {
7519                 err = -ENOENT;
7520                 goto out_err;
7521         }
7522
7523         if (!rdev->ops->testmode_dump) {
7524                 err = -EOPNOTSUPP;
7525                 goto out_err;
7526         }
7527
7528         while (1) {
7529                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7530                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7531                                            NL80211_CMD_TESTMODE);
7532                 struct nlattr *tmdata;
7533
7534                 if (!hdr)
7535                         break;
7536
7537                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7538                         genlmsg_cancel(skb, hdr);
7539                         break;
7540                 }
7541
7542                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7543                 if (!tmdata) {
7544                         genlmsg_cancel(skb, hdr);
7545                         break;
7546                 }
7547                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7548                 nla_nest_end(skb, tmdata);
7549
7550                 if (err == -ENOBUFS || err == -ENOENT) {
7551                         genlmsg_cancel(skb, hdr);
7552                         break;
7553                 } else if (err) {
7554                         genlmsg_cancel(skb, hdr);
7555                         goto out_err;
7556                 }
7557
7558                 genlmsg_end(skb, hdr);
7559         }
7560
7561         err = skb->len;
7562         /* see above */
7563         cb->args[0] = phy_idx + 1;
7564  out_err:
7565         rtnl_unlock();
7566         return err;
7567 }
7568 #endif
7569
7570 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7571 {
7572         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7573         struct net_device *dev = info->user_ptr[1];
7574         struct cfg80211_connect_params connect;
7575         struct wiphy *wiphy;
7576         struct cfg80211_cached_keys *connkeys = NULL;
7577         int err;
7578
7579         memset(&connect, 0, sizeof(connect));
7580
7581         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7582                 return -EINVAL;
7583
7584         if (!info->attrs[NL80211_ATTR_SSID] ||
7585             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7586                 return -EINVAL;
7587
7588         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7589                 connect.auth_type =
7590                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7591                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7592                                              NL80211_CMD_CONNECT))
7593                         return -EINVAL;
7594         } else
7595                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7596
7597         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7598
7599         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7600                                       NL80211_MAX_NR_CIPHER_SUITES);
7601         if (err)
7602                 return err;
7603
7604         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7605             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7606                 return -EOPNOTSUPP;
7607
7608         wiphy = &rdev->wiphy;
7609
7610         connect.bg_scan_period = -1;
7611         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7612                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7613                 connect.bg_scan_period =
7614                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7615         }
7616
7617         if (info->attrs[NL80211_ATTR_MAC])
7618                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7619         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7620                 connect.bssid_hint =
7621                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7622         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7623         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7624
7625         if (info->attrs[NL80211_ATTR_IE]) {
7626                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7627                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7628         }
7629
7630         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7631                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7632                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7633                     connect.mfp != NL80211_MFP_NO)
7634                         return -EINVAL;
7635         } else {
7636                 connect.mfp = NL80211_MFP_NO;
7637         }
7638
7639         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7640                 connect.channel = nl80211_get_valid_chan(
7641                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7642                 if (!connect.channel)
7643                         return -EINVAL;
7644         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7645                 connect.channel_hint = nl80211_get_valid_chan(
7646                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7647                 if (!connect.channel_hint)
7648                         return -EINVAL;
7649         }
7650
7651         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7652                 connkeys = nl80211_parse_connkeys(rdev,
7653                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7654                 if (IS_ERR(connkeys))
7655                         return PTR_ERR(connkeys);
7656         }
7657
7658         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7659                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7660
7661         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7662                 memcpy(&connect.ht_capa_mask,
7663                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7664                        sizeof(connect.ht_capa_mask));
7665
7666         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7667                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7668                         kzfree(connkeys);
7669                         return -EINVAL;
7670                 }
7671                 memcpy(&connect.ht_capa,
7672                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7673                        sizeof(connect.ht_capa));
7674         }
7675
7676         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7677                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7678
7679         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7680                 memcpy(&connect.vht_capa_mask,
7681                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7682                        sizeof(connect.vht_capa_mask));
7683
7684         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7685                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7686                         kzfree(connkeys);
7687                         return -EINVAL;
7688                 }
7689                 memcpy(&connect.vht_capa,
7690                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7691                        sizeof(connect.vht_capa));
7692         }
7693
7694         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7695                 if (!(rdev->wiphy.features &
7696                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7697                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7698                         return -EINVAL;
7699                 connect.flags |= ASSOC_REQ_USE_RRM;
7700         }
7701
7702         wdev_lock(dev->ieee80211_ptr);
7703         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7704         wdev_unlock(dev->ieee80211_ptr);
7705         if (err)
7706                 kzfree(connkeys);
7707         return err;
7708 }
7709
7710 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7711 {
7712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7713         struct net_device *dev = info->user_ptr[1];
7714         u16 reason;
7715         int ret;
7716
7717         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7718                 reason = WLAN_REASON_DEAUTH_LEAVING;
7719         else
7720                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7721
7722         if (reason == 0)
7723                 return -EINVAL;
7724
7725         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7726             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7727                 return -EOPNOTSUPP;
7728
7729         wdev_lock(dev->ieee80211_ptr);
7730         ret = cfg80211_disconnect(rdev, dev, reason, true);
7731         wdev_unlock(dev->ieee80211_ptr);
7732         return ret;
7733 }
7734
7735 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7736 {
7737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7738         struct net *net;
7739         int err;
7740         u32 pid;
7741
7742         if (!info->attrs[NL80211_ATTR_PID])
7743                 return -EINVAL;
7744
7745         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7746
7747         net = get_net_ns_by_pid(pid);
7748         if (IS_ERR(net))
7749                 return PTR_ERR(net);
7750
7751         err = 0;
7752
7753         /* check if anything to do */
7754         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7755                 err = cfg80211_switch_netns(rdev, net);
7756
7757         put_net(net);
7758         return err;
7759 }
7760
7761 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7762 {
7763         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7764         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7765                         struct cfg80211_pmksa *pmksa) = NULL;
7766         struct net_device *dev = info->user_ptr[1];
7767         struct cfg80211_pmksa pmksa;
7768
7769         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7770
7771         if (!info->attrs[NL80211_ATTR_MAC])
7772                 return -EINVAL;
7773
7774         if (!info->attrs[NL80211_ATTR_PMKID])
7775                 return -EINVAL;
7776
7777         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7778         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7779
7780         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7781             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7782                 return -EOPNOTSUPP;
7783
7784         switch (info->genlhdr->cmd) {
7785         case NL80211_CMD_SET_PMKSA:
7786                 rdev_ops = rdev->ops->set_pmksa;
7787                 break;
7788         case NL80211_CMD_DEL_PMKSA:
7789                 rdev_ops = rdev->ops->del_pmksa;
7790                 break;
7791         default:
7792                 WARN_ON(1);
7793                 break;
7794         }
7795
7796         if (!rdev_ops)
7797                 return -EOPNOTSUPP;
7798
7799         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7800 }
7801
7802 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7803 {
7804         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7805         struct net_device *dev = info->user_ptr[1];
7806
7807         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7808             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7809                 return -EOPNOTSUPP;
7810
7811         if (!rdev->ops->flush_pmksa)
7812                 return -EOPNOTSUPP;
7813
7814         return rdev_flush_pmksa(rdev, dev);
7815 }
7816
7817 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7818 {
7819         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7820         struct net_device *dev = info->user_ptr[1];
7821         u8 action_code, dialog_token;
7822         u32 peer_capability = 0;
7823         u16 status_code;
7824         u8 *peer;
7825         bool initiator;
7826
7827         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7828             !rdev->ops->tdls_mgmt)
7829                 return -EOPNOTSUPP;
7830
7831         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7832             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7833             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7834             !info->attrs[NL80211_ATTR_IE] ||
7835             !info->attrs[NL80211_ATTR_MAC])
7836                 return -EINVAL;
7837
7838         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7839         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7840         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7841         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7842         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7843         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7844                 peer_capability =
7845                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7846
7847         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7848                               dialog_token, status_code, peer_capability,
7849                               initiator,
7850                               nla_data(info->attrs[NL80211_ATTR_IE]),
7851                               nla_len(info->attrs[NL80211_ATTR_IE]));
7852 }
7853
7854 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7855 {
7856         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7857         struct net_device *dev = info->user_ptr[1];
7858         enum nl80211_tdls_operation operation;
7859         u8 *peer;
7860
7861         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7862             !rdev->ops->tdls_oper)
7863                 return -EOPNOTSUPP;
7864
7865         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7866             !info->attrs[NL80211_ATTR_MAC])
7867                 return -EINVAL;
7868
7869         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7870         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7871
7872         return rdev_tdls_oper(rdev, dev, peer, operation);
7873 }
7874
7875 static int nl80211_remain_on_channel(struct sk_buff *skb,
7876                                      struct genl_info *info)
7877 {
7878         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7879         struct wireless_dev *wdev = info->user_ptr[1];
7880         struct cfg80211_chan_def chandef;
7881         struct sk_buff *msg;
7882         void *hdr;
7883         u64 cookie;
7884         u32 duration;
7885         int err;
7886
7887         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7888             !info->attrs[NL80211_ATTR_DURATION])
7889                 return -EINVAL;
7890
7891         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7892
7893         if (!rdev->ops->remain_on_channel ||
7894             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7895                 return -EOPNOTSUPP;
7896
7897         /*
7898          * We should be on that channel for at least a minimum amount of
7899          * time (10ms) but no longer than the driver supports.
7900          */
7901         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7902             duration > rdev->wiphy.max_remain_on_channel_duration)
7903                 return -EINVAL;
7904
7905         err = nl80211_parse_chandef(rdev, info, &chandef);
7906         if (err)
7907                 return err;
7908
7909         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7910         if (!msg)
7911                 return -ENOMEM;
7912
7913         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7914                              NL80211_CMD_REMAIN_ON_CHANNEL);
7915         if (!hdr) {
7916                 err = -ENOBUFS;
7917                 goto free_msg;
7918         }
7919
7920         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7921                                      duration, &cookie);
7922
7923         if (err)
7924                 goto free_msg;
7925
7926         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7927                 goto nla_put_failure;
7928
7929         genlmsg_end(msg, hdr);
7930
7931         return genlmsg_reply(msg, info);
7932
7933  nla_put_failure:
7934         err = -ENOBUFS;
7935  free_msg:
7936         nlmsg_free(msg);
7937         return err;
7938 }
7939
7940 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7941                                             struct genl_info *info)
7942 {
7943         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7944         struct wireless_dev *wdev = info->user_ptr[1];
7945         u64 cookie;
7946
7947         if (!info->attrs[NL80211_ATTR_COOKIE])
7948                 return -EINVAL;
7949
7950         if (!rdev->ops->cancel_remain_on_channel)
7951                 return -EOPNOTSUPP;
7952
7953         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7954
7955         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7956 }
7957
7958 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7959                            u8 *rates, u8 rates_len)
7960 {
7961         u8 i;
7962         u32 mask = 0;
7963
7964         for (i = 0; i < rates_len; i++) {
7965                 int rate = (rates[i] & 0x7f) * 5;
7966                 int ridx;
7967                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7968                         struct ieee80211_rate *srate =
7969                                 &sband->bitrates[ridx];
7970                         if (rate == srate->bitrate) {
7971                                 mask |= 1 << ridx;
7972                                 break;
7973                         }
7974                 }
7975                 if (ridx == sband->n_bitrates)
7976                         return 0; /* rate not found */
7977         }
7978
7979         return mask;
7980 }
7981
7982 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7983                                u8 *rates, u8 rates_len,
7984                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7985 {
7986         u8 i;
7987
7988         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7989
7990         for (i = 0; i < rates_len; i++) {
7991                 int ridx, rbit;
7992
7993                 ridx = rates[i] / 8;
7994                 rbit = BIT(rates[i] % 8);
7995
7996                 /* check validity */
7997                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7998                         return false;
7999
8000                 /* check availability */
8001                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8002                         mcs[ridx] |= rbit;
8003                 else
8004                         return false;
8005         }
8006
8007         return true;
8008 }
8009
8010 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8011 {
8012         u16 mcs_mask = 0;
8013
8014         switch (vht_mcs_map) {
8015         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8016                 break;
8017         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8018                 mcs_mask = 0x00FF;
8019                 break;
8020         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8021                 mcs_mask = 0x01FF;
8022                 break;
8023         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8024                 mcs_mask = 0x03FF;
8025                 break;
8026         default:
8027                 break;
8028         }
8029
8030         return mcs_mask;
8031 }
8032
8033 static void vht_build_mcs_mask(u16 vht_mcs_map,
8034                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8035 {
8036         u8 nss;
8037
8038         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8039                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8040                 vht_mcs_map >>= 2;
8041         }
8042 }
8043
8044 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8045                              struct nl80211_txrate_vht *txrate,
8046                              u16 mcs[NL80211_VHT_NSS_MAX])
8047 {
8048         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8049         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8050         u8 i;
8051
8052         if (!sband->vht_cap.vht_supported)
8053                 return false;
8054
8055         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8056
8057         /* Build vht_mcs_mask from VHT capabilities */
8058         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8059
8060         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8061                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8062                         mcs[i] = txrate->mcs[i];
8063                 else
8064                         return false;
8065         }
8066
8067         return true;
8068 }
8069
8070 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8071         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8072                                     .len = NL80211_MAX_SUPP_RATES },
8073         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8074                                 .len = NL80211_MAX_SUPP_HT_RATES },
8075         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8076         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8077 };
8078
8079 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8080                                        struct genl_info *info)
8081 {
8082         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8084         struct cfg80211_bitrate_mask mask;
8085         int rem, i;
8086         struct net_device *dev = info->user_ptr[1];
8087         struct nlattr *tx_rates;
8088         struct ieee80211_supported_band *sband;
8089         u16 vht_tx_mcs_map;
8090
8091         if (!rdev->ops->set_bitrate_mask)
8092                 return -EOPNOTSUPP;
8093
8094         memset(&mask, 0, sizeof(mask));
8095         /* Default to all rates enabled */
8096         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8097                 sband = rdev->wiphy.bands[i];
8098
8099                 if (!sband)
8100                         continue;
8101
8102                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8103                 memcpy(mask.control[i].ht_mcs,
8104                        sband->ht_cap.mcs.rx_mask,
8105                        sizeof(mask.control[i].ht_mcs));
8106
8107                 if (!sband->vht_cap.vht_supported)
8108                         continue;
8109
8110                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8111                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8112         }
8113
8114         /* if no rates are given set it back to the defaults */
8115         if (!info->attrs[NL80211_ATTR_TX_RATES])
8116                 goto out;
8117
8118         /*
8119          * The nested attribute uses enum nl80211_band as the index. This maps
8120          * directly to the enum ieee80211_band values used in cfg80211.
8121          */
8122         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8123         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8124                 enum ieee80211_band band = nla_type(tx_rates);
8125                 int err;
8126
8127                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8128                         return -EINVAL;
8129                 sband = rdev->wiphy.bands[band];
8130                 if (sband == NULL)
8131                         return -EINVAL;
8132                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8133                                 nla_len(tx_rates), nl80211_txattr_policy);
8134                 if (err)
8135                         return err;
8136                 if (tb[NL80211_TXRATE_LEGACY]) {
8137                         mask.control[band].legacy = rateset_to_mask(
8138                                 sband,
8139                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8140                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8141                         if ((mask.control[band].legacy == 0) &&
8142                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8143                                 return -EINVAL;
8144                 }
8145                 if (tb[NL80211_TXRATE_HT]) {
8146                         if (!ht_rateset_to_mask(
8147                                         sband,
8148                                         nla_data(tb[NL80211_TXRATE_HT]),
8149                                         nla_len(tb[NL80211_TXRATE_HT]),
8150                                         mask.control[band].ht_mcs))
8151                                 return -EINVAL;
8152                 }
8153                 if (tb[NL80211_TXRATE_VHT]) {
8154                         if (!vht_set_mcs_mask(
8155                                         sband,
8156                                         nla_data(tb[NL80211_TXRATE_VHT]),
8157                                         mask.control[band].vht_mcs))
8158                                 return -EINVAL;
8159                 }
8160                 if (tb[NL80211_TXRATE_GI]) {
8161                         mask.control[band].gi =
8162                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8163                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8164                                 return -EINVAL;
8165                 }
8166
8167                 if (mask.control[band].legacy == 0) {
8168                         /* don't allow empty legacy rates if HT or VHT
8169                          * are not even supported.
8170                          */
8171                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8172                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8173                                 return -EINVAL;
8174
8175                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8176                                 if (mask.control[band].ht_mcs[i])
8177                                         goto out;
8178
8179                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8180                                 if (mask.control[band].vht_mcs[i])
8181                                         goto out;
8182
8183                         /* legacy and mcs rates may not be both empty */
8184                         return -EINVAL;
8185                 }
8186         }
8187
8188 out:
8189         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8190 }
8191
8192 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8193 {
8194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8195         struct wireless_dev *wdev = info->user_ptr[1];
8196         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8197
8198         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8199                 return -EINVAL;
8200
8201         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8202                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8203
8204         switch (wdev->iftype) {
8205         case NL80211_IFTYPE_STATION:
8206         case NL80211_IFTYPE_ADHOC:
8207         case NL80211_IFTYPE_P2P_CLIENT:
8208         case NL80211_IFTYPE_AP:
8209         case NL80211_IFTYPE_AP_VLAN:
8210         case NL80211_IFTYPE_MESH_POINT:
8211         case NL80211_IFTYPE_P2P_GO:
8212         case NL80211_IFTYPE_P2P_DEVICE:
8213                 break;
8214         default:
8215                 return -EOPNOTSUPP;
8216         }
8217
8218         /* not much point in registering if we can't reply */
8219         if (!rdev->ops->mgmt_tx)
8220                 return -EOPNOTSUPP;
8221
8222         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8223                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8224                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8225 }
8226
8227 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8228 {
8229         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8230         struct wireless_dev *wdev = info->user_ptr[1];
8231         struct cfg80211_chan_def chandef;
8232         int err;
8233         void *hdr = NULL;
8234         u64 cookie;
8235         struct sk_buff *msg = NULL;
8236         struct cfg80211_mgmt_tx_params params = {
8237                 .dont_wait_for_ack =
8238                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8239         };
8240
8241         if (!info->attrs[NL80211_ATTR_FRAME])
8242                 return -EINVAL;
8243
8244         if (!rdev->ops->mgmt_tx)
8245                 return -EOPNOTSUPP;
8246
8247         switch (wdev->iftype) {
8248         case NL80211_IFTYPE_P2P_DEVICE:
8249                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8250                         return -EINVAL;
8251         case NL80211_IFTYPE_STATION:
8252         case NL80211_IFTYPE_ADHOC:
8253         case NL80211_IFTYPE_P2P_CLIENT:
8254         case NL80211_IFTYPE_AP:
8255         case NL80211_IFTYPE_AP_VLAN:
8256         case NL80211_IFTYPE_MESH_POINT:
8257         case NL80211_IFTYPE_P2P_GO:
8258                 break;
8259         default:
8260                 return -EOPNOTSUPP;
8261         }
8262
8263         if (info->attrs[NL80211_ATTR_DURATION]) {
8264                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8265                         return -EINVAL;
8266                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8267
8268                 /*
8269                  * We should wait on the channel for at least a minimum amount
8270                  * of time (10ms) but no longer than the driver supports.
8271                  */
8272                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8273                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8274                         return -EINVAL;
8275
8276         }
8277
8278         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8279
8280         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8281                 return -EINVAL;
8282
8283         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8284
8285         /* get the channel if any has been specified, otherwise pass NULL to
8286          * the driver. The latter will use the current one
8287          */
8288         chandef.chan = NULL;
8289         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8290                 err = nl80211_parse_chandef(rdev, info, &chandef);
8291                 if (err)
8292                         return err;
8293         }
8294
8295         if (!chandef.chan && params.offchan)
8296                 return -EINVAL;
8297
8298         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8299         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8300
8301         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8302                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8303                 int i;
8304
8305                 if (len % sizeof(u16))
8306                         return -EINVAL;
8307
8308                 params.n_csa_offsets = len / sizeof(u16);
8309                 params.csa_offsets =
8310                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8311
8312                 /* check that all the offsets fit the frame */
8313                 for (i = 0; i < params.n_csa_offsets; i++) {
8314                         if (params.csa_offsets[i] >= params.len)
8315                                 return -EINVAL;
8316                 }
8317         }
8318
8319         if (!params.dont_wait_for_ack) {
8320                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8321                 if (!msg)
8322                         return -ENOMEM;
8323
8324                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8325                                      NL80211_CMD_FRAME);
8326                 if (!hdr) {
8327                         err = -ENOBUFS;
8328                         goto free_msg;
8329                 }
8330         }
8331
8332         params.chan = chandef.chan;
8333         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8334         if (err)
8335                 goto free_msg;
8336
8337         if (msg) {
8338                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8339                         goto nla_put_failure;
8340
8341                 genlmsg_end(msg, hdr);
8342                 return genlmsg_reply(msg, info);
8343         }
8344
8345         return 0;
8346
8347  nla_put_failure:
8348         err = -ENOBUFS;
8349  free_msg:
8350         nlmsg_free(msg);
8351         return err;
8352 }
8353
8354 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8355 {
8356         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8357         struct wireless_dev *wdev = info->user_ptr[1];
8358         u64 cookie;
8359
8360         if (!info->attrs[NL80211_ATTR_COOKIE])
8361                 return -EINVAL;
8362
8363         if (!rdev->ops->mgmt_tx_cancel_wait)
8364                 return -EOPNOTSUPP;
8365
8366         switch (wdev->iftype) {
8367         case NL80211_IFTYPE_STATION:
8368         case NL80211_IFTYPE_ADHOC:
8369         case NL80211_IFTYPE_P2P_CLIENT:
8370         case NL80211_IFTYPE_AP:
8371         case NL80211_IFTYPE_AP_VLAN:
8372         case NL80211_IFTYPE_P2P_GO:
8373         case NL80211_IFTYPE_P2P_DEVICE:
8374                 break;
8375         default:
8376                 return -EOPNOTSUPP;
8377         }
8378
8379         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8380
8381         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8382 }
8383
8384 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8385 {
8386         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8387         struct wireless_dev *wdev;
8388         struct net_device *dev = info->user_ptr[1];
8389         u8 ps_state;
8390         bool state;
8391         int err;
8392
8393         if (!info->attrs[NL80211_ATTR_PS_STATE])
8394                 return -EINVAL;
8395
8396         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8397
8398         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8399                 return -EINVAL;
8400
8401         wdev = dev->ieee80211_ptr;
8402
8403         if (!rdev->ops->set_power_mgmt)
8404                 return -EOPNOTSUPP;
8405
8406         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8407
8408         if (state == wdev->ps)
8409                 return 0;
8410
8411         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8412         if (!err)
8413                 wdev->ps = state;
8414         return err;
8415 }
8416
8417 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8418 {
8419         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8420         enum nl80211_ps_state ps_state;
8421         struct wireless_dev *wdev;
8422         struct net_device *dev = info->user_ptr[1];
8423         struct sk_buff *msg;
8424         void *hdr;
8425         int err;
8426
8427         wdev = dev->ieee80211_ptr;
8428
8429         if (!rdev->ops->set_power_mgmt)
8430                 return -EOPNOTSUPP;
8431
8432         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8433         if (!msg)
8434                 return -ENOMEM;
8435
8436         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8437                              NL80211_CMD_GET_POWER_SAVE);
8438         if (!hdr) {
8439                 err = -ENOBUFS;
8440                 goto free_msg;
8441         }
8442
8443         if (wdev->ps)
8444                 ps_state = NL80211_PS_ENABLED;
8445         else
8446                 ps_state = NL80211_PS_DISABLED;
8447
8448         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8449                 goto nla_put_failure;
8450
8451         genlmsg_end(msg, hdr);
8452         return genlmsg_reply(msg, info);
8453
8454  nla_put_failure:
8455         err = -ENOBUFS;
8456  free_msg:
8457         nlmsg_free(msg);
8458         return err;
8459 }
8460
8461 static const struct nla_policy
8462 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8463         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8464         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8465         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8466         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8467         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8468         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8469 };
8470
8471 static int nl80211_set_cqm_txe(struct genl_info *info,
8472                                u32 rate, u32 pkts, u32 intvl)
8473 {
8474         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8475         struct net_device *dev = info->user_ptr[1];
8476         struct wireless_dev *wdev = dev->ieee80211_ptr;
8477
8478         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8479                 return -EINVAL;
8480
8481         if (!rdev->ops->set_cqm_txe_config)
8482                 return -EOPNOTSUPP;
8483
8484         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8485             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8486                 return -EOPNOTSUPP;
8487
8488         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8489 }
8490
8491 static int nl80211_set_cqm_rssi(struct genl_info *info,
8492                                 s32 threshold, u32 hysteresis)
8493 {
8494         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8495         struct net_device *dev = info->user_ptr[1];
8496         struct wireless_dev *wdev = dev->ieee80211_ptr;
8497
8498         if (threshold > 0)
8499                 return -EINVAL;
8500
8501         /* disabling - hysteresis should also be zero then */
8502         if (threshold == 0)
8503                 hysteresis = 0;
8504
8505         if (!rdev->ops->set_cqm_rssi_config)
8506                 return -EOPNOTSUPP;
8507
8508         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8509             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8510                 return -EOPNOTSUPP;
8511
8512         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8513 }
8514
8515 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8516 {
8517         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8518         struct nlattr *cqm;
8519         int err;
8520
8521         cqm = info->attrs[NL80211_ATTR_CQM];
8522         if (!cqm)
8523                 return -EINVAL;
8524
8525         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8526                                nl80211_attr_cqm_policy);
8527         if (err)
8528                 return err;
8529
8530         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8531             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8532                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8533                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8534
8535                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8536         }
8537
8538         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8539             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8540             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8541                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8542                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8543                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8544
8545                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8546         }
8547
8548         return -EINVAL;
8549 }
8550
8551 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8552 {
8553         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8554         struct net_device *dev = info->user_ptr[1];
8555         struct ocb_setup setup = {};
8556         int err;
8557
8558         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8559         if (err)
8560                 return err;
8561
8562         return cfg80211_join_ocb(rdev, dev, &setup);
8563 }
8564
8565 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8566 {
8567         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8568         struct net_device *dev = info->user_ptr[1];
8569
8570         return cfg80211_leave_ocb(rdev, dev);
8571 }
8572
8573 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8574 {
8575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8576         struct net_device *dev = info->user_ptr[1];
8577         struct mesh_config cfg;
8578         struct mesh_setup setup;
8579         int err;
8580
8581         /* start with default */
8582         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8583         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8584
8585         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8586                 /* and parse parameters if given */
8587                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8588                 if (err)
8589                         return err;
8590         }
8591
8592         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8593             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8594                 return -EINVAL;
8595
8596         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8597         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8598
8599         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8600             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8601                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8602                         return -EINVAL;
8603
8604         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8605                 setup.beacon_interval =
8606                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8607                 if (setup.beacon_interval < 10 ||
8608                     setup.beacon_interval > 10000)
8609                         return -EINVAL;
8610         }
8611
8612         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8613                 setup.dtim_period =
8614                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8615                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8616                         return -EINVAL;
8617         }
8618
8619         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8620                 /* parse additional setup parameters if given */
8621                 err = nl80211_parse_mesh_setup(info, &setup);
8622                 if (err)
8623                         return err;
8624         }
8625
8626         if (setup.user_mpm)
8627                 cfg.auto_open_plinks = false;
8628
8629         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8630                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8631                 if (err)
8632                         return err;
8633         } else {
8634                 /* cfg80211_join_mesh() will sort it out */
8635                 setup.chandef.chan = NULL;
8636         }
8637
8638         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8639                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8640                 int n_rates =
8641                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8642                 struct ieee80211_supported_band *sband;
8643
8644                 if (!setup.chandef.chan)
8645                         return -EINVAL;
8646
8647                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8648
8649                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8650                                              &setup.basic_rates);
8651                 if (err)
8652                         return err;
8653         }
8654
8655         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8656 }
8657
8658 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8659 {
8660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8661         struct net_device *dev = info->user_ptr[1];
8662
8663         return cfg80211_leave_mesh(rdev, dev);
8664 }
8665
8666 #ifdef CONFIG_PM
8667 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8668                                         struct cfg80211_registered_device *rdev)
8669 {
8670         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8671         struct nlattr *nl_pats, *nl_pat;
8672         int i, pat_len;
8673
8674         if (!wowlan->n_patterns)
8675                 return 0;
8676
8677         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8678         if (!nl_pats)
8679                 return -ENOBUFS;
8680
8681         for (i = 0; i < wowlan->n_patterns; i++) {
8682                 nl_pat = nla_nest_start(msg, i + 1);
8683                 if (!nl_pat)
8684                         return -ENOBUFS;
8685                 pat_len = wowlan->patterns[i].pattern_len;
8686                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8687                             wowlan->patterns[i].mask) ||
8688                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8689                             wowlan->patterns[i].pattern) ||
8690                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8691                                 wowlan->patterns[i].pkt_offset))
8692                         return -ENOBUFS;
8693                 nla_nest_end(msg, nl_pat);
8694         }
8695         nla_nest_end(msg, nl_pats);
8696
8697         return 0;
8698 }
8699
8700 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8701                                    struct cfg80211_wowlan_tcp *tcp)
8702 {
8703         struct nlattr *nl_tcp;
8704
8705         if (!tcp)
8706                 return 0;
8707
8708         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8709         if (!nl_tcp)
8710                 return -ENOBUFS;
8711
8712         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8713             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8714             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8715             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8716             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8717             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8718                     tcp->payload_len, tcp->payload) ||
8719             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8720                         tcp->data_interval) ||
8721             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8722                     tcp->wake_len, tcp->wake_data) ||
8723             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8724                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8725                 return -ENOBUFS;
8726
8727         if (tcp->payload_seq.len &&
8728             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8729                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8730                 return -ENOBUFS;
8731
8732         if (tcp->payload_tok.len &&
8733             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8734                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8735                     &tcp->payload_tok))
8736                 return -ENOBUFS;
8737
8738         nla_nest_end(msg, nl_tcp);
8739
8740         return 0;
8741 }
8742
8743 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8744 {
8745         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8746         struct sk_buff *msg;
8747         void *hdr;
8748         u32 size = NLMSG_DEFAULT_SIZE;
8749
8750         if (!rdev->wiphy.wowlan)
8751                 return -EOPNOTSUPP;
8752
8753         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8754                 /* adjust size to have room for all the data */
8755                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8756                         rdev->wiphy.wowlan_config->tcp->payload_len +
8757                         rdev->wiphy.wowlan_config->tcp->wake_len +
8758                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8759         }
8760
8761         msg = nlmsg_new(size, GFP_KERNEL);
8762         if (!msg)
8763                 return -ENOMEM;
8764
8765         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8766                              NL80211_CMD_GET_WOWLAN);
8767         if (!hdr)
8768                 goto nla_put_failure;
8769
8770         if (rdev->wiphy.wowlan_config) {
8771                 struct nlattr *nl_wowlan;
8772
8773                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8774                 if (!nl_wowlan)
8775                         goto nla_put_failure;
8776
8777                 if ((rdev->wiphy.wowlan_config->any &&
8778                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8779                     (rdev->wiphy.wowlan_config->disconnect &&
8780                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8781                     (rdev->wiphy.wowlan_config->magic_pkt &&
8782                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8783                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8784                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8785                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8786                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8787                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8788                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8789                     (rdev->wiphy.wowlan_config->rfkill_release &&
8790                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8791                         goto nla_put_failure;
8792
8793                 if (nl80211_send_wowlan_patterns(msg, rdev))
8794                         goto nla_put_failure;
8795
8796                 if (nl80211_send_wowlan_tcp(msg,
8797                                             rdev->wiphy.wowlan_config->tcp))
8798                         goto nla_put_failure;
8799
8800                 nla_nest_end(msg, nl_wowlan);
8801         }
8802
8803         genlmsg_end(msg, hdr);
8804         return genlmsg_reply(msg, info);
8805
8806 nla_put_failure:
8807         nlmsg_free(msg);
8808         return -ENOBUFS;
8809 }
8810
8811 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8812                                     struct nlattr *attr,
8813                                     struct cfg80211_wowlan *trig)
8814 {
8815         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8816         struct cfg80211_wowlan_tcp *cfg;
8817         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8818         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8819         u32 size;
8820         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8821         int err, port;
8822
8823         if (!rdev->wiphy.wowlan->tcp)
8824                 return -EINVAL;
8825
8826         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8827                         nla_data(attr), nla_len(attr),
8828                         nl80211_wowlan_tcp_policy);
8829         if (err)
8830                 return err;
8831
8832         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8833             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8834             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8835             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8836             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8837             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8838             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8839             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8840                 return -EINVAL;
8841
8842         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8843         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8844                 return -EINVAL;
8845
8846         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8847                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8848             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8849                 return -EINVAL;
8850
8851         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8852         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8853                 return -EINVAL;
8854
8855         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8856         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8857                 return -EINVAL;
8858
8859         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8860                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8861
8862                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8863                 tokens_size = tokln - sizeof(*tok);
8864
8865                 if (!tok->len || tokens_size % tok->len)
8866                         return -EINVAL;
8867                 if (!rdev->wiphy.wowlan->tcp->tok)
8868                         return -EINVAL;
8869                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8870                         return -EINVAL;
8871                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8872                         return -EINVAL;
8873                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8874                         return -EINVAL;
8875                 if (tok->offset + tok->len > data_size)
8876                         return -EINVAL;
8877         }
8878
8879         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8880                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8881                 if (!rdev->wiphy.wowlan->tcp->seq)
8882                         return -EINVAL;
8883                 if (seq->len == 0 || seq->len > 4)
8884                         return -EINVAL;
8885                 if (seq->len + seq->offset > data_size)
8886                         return -EINVAL;
8887         }
8888
8889         size = sizeof(*cfg);
8890         size += data_size;
8891         size += wake_size + wake_mask_size;
8892         size += tokens_size;
8893
8894         cfg = kzalloc(size, GFP_KERNEL);
8895         if (!cfg)
8896                 return -ENOMEM;
8897         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8898         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8899         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8900                ETH_ALEN);
8901         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8902                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8903         else
8904                 port = 0;
8905 #ifdef CONFIG_INET
8906         /* allocate a socket and port for it and use it */
8907         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8908                             IPPROTO_TCP, &cfg->sock, 1);
8909         if (err) {
8910                 kfree(cfg);
8911                 return err;
8912         }
8913         if (inet_csk_get_port(cfg->sock->sk, port)) {
8914                 sock_release(cfg->sock);
8915                 kfree(cfg);
8916                 return -EADDRINUSE;
8917         }
8918         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8919 #else
8920         if (!port) {
8921                 kfree(cfg);
8922                 return -EINVAL;
8923         }
8924         cfg->src_port = port;
8925 #endif
8926
8927         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8928         cfg->payload_len = data_size;
8929         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8930         memcpy((void *)cfg->payload,
8931                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8932                data_size);
8933         if (seq)
8934                 cfg->payload_seq = *seq;
8935         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8936         cfg->wake_len = wake_size;
8937         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8938         memcpy((void *)cfg->wake_data,
8939                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8940                wake_size);
8941         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8942                          data_size + wake_size;
8943         memcpy((void *)cfg->wake_mask,
8944                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8945                wake_mask_size);
8946         if (tok) {
8947                 cfg->tokens_size = tokens_size;
8948                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8949         }
8950
8951         trig->tcp = cfg;
8952
8953         return 0;
8954 }
8955
8956 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
8957                                    const struct wiphy_wowlan_support *wowlan,
8958                                    struct nlattr *attr,
8959                                    struct cfg80211_wowlan *trig)
8960 {
8961         struct nlattr **tb;
8962         int err;
8963
8964         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
8965         if (!tb)
8966                 return -ENOMEM;
8967
8968         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
8969                 err = -EOPNOTSUPP;
8970                 goto out;
8971         }
8972
8973         err = nla_parse(tb, NL80211_ATTR_MAX,
8974                         nla_data(attr), nla_len(attr),
8975                         nl80211_policy);
8976         if (err)
8977                 goto out;
8978
8979         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
8980         err = PTR_ERR_OR_ZERO(trig->nd_config);
8981         if (err)
8982                 trig->nd_config = NULL;
8983
8984 out:
8985         kfree(tb);
8986         return err;
8987 }
8988
8989 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8990 {
8991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8992         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8993         struct cfg80211_wowlan new_triggers = {};
8994         struct cfg80211_wowlan *ntrig;
8995         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8996         int err, i;
8997         bool prev_enabled = rdev->wiphy.wowlan_config;
8998
8999         if (!wowlan)
9000                 return -EOPNOTSUPP;
9001
9002         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9003                 cfg80211_rdev_free_wowlan(rdev);
9004                 rdev->wiphy.wowlan_config = NULL;
9005                 goto set_wakeup;
9006         }
9007
9008         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9009                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9010                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9011                         nl80211_wowlan_policy);
9012         if (err)
9013                 return err;
9014
9015         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9016                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9017                         return -EINVAL;
9018                 new_triggers.any = true;
9019         }
9020
9021         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9022                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9023                         return -EINVAL;
9024                 new_triggers.disconnect = true;
9025         }
9026
9027         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9028                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9029                         return -EINVAL;
9030                 new_triggers.magic_pkt = true;
9031         }
9032
9033         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9034                 return -EINVAL;
9035
9036         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9037                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9038                         return -EINVAL;
9039                 new_triggers.gtk_rekey_failure = true;
9040         }
9041
9042         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9043                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9044                         return -EINVAL;
9045                 new_triggers.eap_identity_req = true;
9046         }
9047
9048         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9049                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9050                         return -EINVAL;
9051                 new_triggers.four_way_handshake = true;
9052         }
9053
9054         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9055                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9056                         return -EINVAL;
9057                 new_triggers.rfkill_release = true;
9058         }
9059
9060         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9061                 struct nlattr *pat;
9062                 int n_patterns = 0;
9063                 int rem, pat_len, mask_len, pkt_offset;
9064                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9065
9066                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9067                                     rem)
9068                         n_patterns++;
9069                 if (n_patterns > wowlan->n_patterns)
9070                         return -EINVAL;
9071
9072                 new_triggers.patterns = kcalloc(n_patterns,
9073                                                 sizeof(new_triggers.patterns[0]),
9074                                                 GFP_KERNEL);
9075                 if (!new_triggers.patterns)
9076                         return -ENOMEM;
9077
9078                 new_triggers.n_patterns = n_patterns;
9079                 i = 0;
9080
9081                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9082                                     rem) {
9083                         u8 *mask_pat;
9084
9085                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9086                                   nla_len(pat), NULL);
9087                         err = -EINVAL;
9088                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9089                             !pat_tb[NL80211_PKTPAT_PATTERN])
9090                                 goto error;
9091                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9092                         mask_len = DIV_ROUND_UP(pat_len, 8);
9093                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9094                                 goto error;
9095                         if (pat_len > wowlan->pattern_max_len ||
9096                             pat_len < wowlan->pattern_min_len)
9097                                 goto error;
9098
9099                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9100                                 pkt_offset = 0;
9101                         else
9102                                 pkt_offset = nla_get_u32(
9103                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9104                         if (pkt_offset > wowlan->max_pkt_offset)
9105                                 goto error;
9106                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9107
9108                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9109                         if (!mask_pat) {
9110                                 err = -ENOMEM;
9111                                 goto error;
9112                         }
9113                         new_triggers.patterns[i].mask = mask_pat;
9114                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9115                                mask_len);
9116                         mask_pat += mask_len;
9117                         new_triggers.patterns[i].pattern = mask_pat;
9118                         new_triggers.patterns[i].pattern_len = pat_len;
9119                         memcpy(mask_pat,
9120                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9121                                pat_len);
9122                         i++;
9123                 }
9124         }
9125
9126         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9127                 err = nl80211_parse_wowlan_tcp(
9128                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9129                         &new_triggers);
9130                 if (err)
9131                         goto error;
9132         }
9133
9134         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9135                 err = nl80211_parse_wowlan_nd(
9136                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9137                         &new_triggers);
9138                 if (err)
9139                         goto error;
9140         }
9141
9142         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9143         if (!ntrig) {
9144                 err = -ENOMEM;
9145                 goto error;
9146         }
9147         cfg80211_rdev_free_wowlan(rdev);
9148         rdev->wiphy.wowlan_config = ntrig;
9149
9150  set_wakeup:
9151         if (rdev->ops->set_wakeup &&
9152             prev_enabled != !!rdev->wiphy.wowlan_config)
9153                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9154
9155         return 0;
9156  error:
9157         for (i = 0; i < new_triggers.n_patterns; i++)
9158                 kfree(new_triggers.patterns[i].mask);
9159         kfree(new_triggers.patterns);
9160         if (new_triggers.tcp && new_triggers.tcp->sock)
9161                 sock_release(new_triggers.tcp->sock);
9162         kfree(new_triggers.tcp);
9163         return err;
9164 }
9165 #endif
9166
9167 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9168                                        struct cfg80211_registered_device *rdev)
9169 {
9170         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9171         int i, j, pat_len;
9172         struct cfg80211_coalesce_rules *rule;
9173
9174         if (!rdev->coalesce->n_rules)
9175                 return 0;
9176
9177         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9178         if (!nl_rules)
9179                 return -ENOBUFS;
9180
9181         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9182                 nl_rule = nla_nest_start(msg, i + 1);
9183                 if (!nl_rule)
9184                         return -ENOBUFS;
9185
9186                 rule = &rdev->coalesce->rules[i];
9187                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9188                                 rule->delay))
9189                         return -ENOBUFS;
9190
9191                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9192                                 rule->condition))
9193                         return -ENOBUFS;
9194
9195                 nl_pats = nla_nest_start(msg,
9196                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9197                 if (!nl_pats)
9198                         return -ENOBUFS;
9199
9200                 for (j = 0; j < rule->n_patterns; j++) {
9201                         nl_pat = nla_nest_start(msg, j + 1);
9202                         if (!nl_pat)
9203                                 return -ENOBUFS;
9204                         pat_len = rule->patterns[j].pattern_len;
9205                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9206                                     DIV_ROUND_UP(pat_len, 8),
9207                                     rule->patterns[j].mask) ||
9208                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9209                                     rule->patterns[j].pattern) ||
9210                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9211                                         rule->patterns[j].pkt_offset))
9212                                 return -ENOBUFS;
9213                         nla_nest_end(msg, nl_pat);
9214                 }
9215                 nla_nest_end(msg, nl_pats);
9216                 nla_nest_end(msg, nl_rule);
9217         }
9218         nla_nest_end(msg, nl_rules);
9219
9220         return 0;
9221 }
9222
9223 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9224 {
9225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9226         struct sk_buff *msg;
9227         void *hdr;
9228
9229         if (!rdev->wiphy.coalesce)
9230                 return -EOPNOTSUPP;
9231
9232         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9233         if (!msg)
9234                 return -ENOMEM;
9235
9236         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9237                              NL80211_CMD_GET_COALESCE);
9238         if (!hdr)
9239                 goto nla_put_failure;
9240
9241         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9242                 goto nla_put_failure;
9243
9244         genlmsg_end(msg, hdr);
9245         return genlmsg_reply(msg, info);
9246
9247 nla_put_failure:
9248         nlmsg_free(msg);
9249         return -ENOBUFS;
9250 }
9251
9252 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9253 {
9254         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9255         int i, j;
9256         struct cfg80211_coalesce_rules *rule;
9257
9258         if (!coalesce)
9259                 return;
9260
9261         for (i = 0; i < coalesce->n_rules; i++) {
9262                 rule = &coalesce->rules[i];
9263                 for (j = 0; j < rule->n_patterns; j++)
9264                         kfree(rule->patterns[j].mask);
9265                 kfree(rule->patterns);
9266         }
9267         kfree(coalesce->rules);
9268         kfree(coalesce);
9269         rdev->coalesce = NULL;
9270 }
9271
9272 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9273                                        struct nlattr *rule,
9274                                        struct cfg80211_coalesce_rules *new_rule)
9275 {
9276         int err, i;
9277         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9278         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9279         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9280         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9281
9282         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9283                         nla_len(rule), nl80211_coalesce_policy);
9284         if (err)
9285                 return err;
9286
9287         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9288                 new_rule->delay =
9289                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9290         if (new_rule->delay > coalesce->max_delay)
9291                 return -EINVAL;
9292
9293         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9294                 new_rule->condition =
9295                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9296         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9297             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9298                 return -EINVAL;
9299
9300         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9301                 return -EINVAL;
9302
9303         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9304                             rem)
9305                 n_patterns++;
9306         if (n_patterns > coalesce->n_patterns)
9307                 return -EINVAL;
9308
9309         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9310                                      GFP_KERNEL);
9311         if (!new_rule->patterns)
9312                 return -ENOMEM;
9313
9314         new_rule->n_patterns = n_patterns;
9315         i = 0;
9316
9317         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9318                             rem) {
9319                 u8 *mask_pat;
9320
9321                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9322                           nla_len(pat), NULL);
9323                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9324                     !pat_tb[NL80211_PKTPAT_PATTERN])
9325                         return -EINVAL;
9326                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9327                 mask_len = DIV_ROUND_UP(pat_len, 8);
9328                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9329                         return -EINVAL;
9330                 if (pat_len > coalesce->pattern_max_len ||
9331                     pat_len < coalesce->pattern_min_len)
9332                         return -EINVAL;
9333
9334                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9335                         pkt_offset = 0;
9336                 else
9337                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9338                 if (pkt_offset > coalesce->max_pkt_offset)
9339                         return -EINVAL;
9340                 new_rule->patterns[i].pkt_offset = pkt_offset;
9341
9342                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9343                 if (!mask_pat)
9344                         return -ENOMEM;
9345
9346                 new_rule->patterns[i].mask = mask_pat;
9347                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9348                        mask_len);
9349
9350                 mask_pat += mask_len;
9351                 new_rule->patterns[i].pattern = mask_pat;
9352                 new_rule->patterns[i].pattern_len = pat_len;
9353                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9354                        pat_len);
9355                 i++;
9356         }
9357
9358         return 0;
9359 }
9360
9361 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9362 {
9363         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9364         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9365         struct cfg80211_coalesce new_coalesce = {};
9366         struct cfg80211_coalesce *n_coalesce;
9367         int err, rem_rule, n_rules = 0, i, j;
9368         struct nlattr *rule;
9369         struct cfg80211_coalesce_rules *tmp_rule;
9370
9371         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9372                 return -EOPNOTSUPP;
9373
9374         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9375                 cfg80211_rdev_free_coalesce(rdev);
9376                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9377                 return 0;
9378         }
9379
9380         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9381                             rem_rule)
9382                 n_rules++;
9383         if (n_rules > coalesce->n_rules)
9384                 return -EINVAL;
9385
9386         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9387                                      GFP_KERNEL);
9388         if (!new_coalesce.rules)
9389                 return -ENOMEM;
9390
9391         new_coalesce.n_rules = n_rules;
9392         i = 0;
9393
9394         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9395                             rem_rule) {
9396                 err = nl80211_parse_coalesce_rule(rdev, rule,
9397                                                   &new_coalesce.rules[i]);
9398                 if (err)
9399                         goto error;
9400
9401                 i++;
9402         }
9403
9404         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9405         if (err)
9406                 goto error;
9407
9408         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9409         if (!n_coalesce) {
9410                 err = -ENOMEM;
9411                 goto error;
9412         }
9413         cfg80211_rdev_free_coalesce(rdev);
9414         rdev->coalesce = n_coalesce;
9415
9416         return 0;
9417 error:
9418         for (i = 0; i < new_coalesce.n_rules; i++) {
9419                 tmp_rule = &new_coalesce.rules[i];
9420                 for (j = 0; j < tmp_rule->n_patterns; j++)
9421                         kfree(tmp_rule->patterns[j].mask);
9422                 kfree(tmp_rule->patterns);
9423         }
9424         kfree(new_coalesce.rules);
9425
9426         return err;
9427 }
9428
9429 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9430 {
9431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9432         struct net_device *dev = info->user_ptr[1];
9433         struct wireless_dev *wdev = dev->ieee80211_ptr;
9434         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9435         struct cfg80211_gtk_rekey_data rekey_data;
9436         int err;
9437
9438         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9439                 return -EINVAL;
9440
9441         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9442                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9443                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9444                         nl80211_rekey_policy);
9445         if (err)
9446                 return err;
9447
9448         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9449                 return -ERANGE;
9450         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9451                 return -ERANGE;
9452         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9453                 return -ERANGE;
9454
9455         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9456         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9457         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9458
9459         wdev_lock(wdev);
9460         if (!wdev->current_bss) {
9461                 err = -ENOTCONN;
9462                 goto out;
9463         }
9464
9465         if (!rdev->ops->set_rekey_data) {
9466                 err = -EOPNOTSUPP;
9467                 goto out;
9468         }
9469
9470         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9471  out:
9472         wdev_unlock(wdev);
9473         return err;
9474 }
9475
9476 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9477                                              struct genl_info *info)
9478 {
9479         struct net_device *dev = info->user_ptr[1];
9480         struct wireless_dev *wdev = dev->ieee80211_ptr;
9481
9482         if (wdev->iftype != NL80211_IFTYPE_AP &&
9483             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9484                 return -EINVAL;
9485
9486         if (wdev->ap_unexpected_nlportid)
9487                 return -EBUSY;
9488
9489         wdev->ap_unexpected_nlportid = info->snd_portid;
9490         return 0;
9491 }
9492
9493 static int nl80211_probe_client(struct sk_buff *skb,
9494                                 struct genl_info *info)
9495 {
9496         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9497         struct net_device *dev = info->user_ptr[1];
9498         struct wireless_dev *wdev = dev->ieee80211_ptr;
9499         struct sk_buff *msg;
9500         void *hdr;
9501         const u8 *addr;
9502         u64 cookie;
9503         int err;
9504
9505         if (wdev->iftype != NL80211_IFTYPE_AP &&
9506             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9507                 return -EOPNOTSUPP;
9508
9509         if (!info->attrs[NL80211_ATTR_MAC])
9510                 return -EINVAL;
9511
9512         if (!rdev->ops->probe_client)
9513                 return -EOPNOTSUPP;
9514
9515         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9516         if (!msg)
9517                 return -ENOMEM;
9518
9519         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9520                              NL80211_CMD_PROBE_CLIENT);
9521         if (!hdr) {
9522                 err = -ENOBUFS;
9523                 goto free_msg;
9524         }
9525
9526         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9527
9528         err = rdev_probe_client(rdev, dev, addr, &cookie);
9529         if (err)
9530                 goto free_msg;
9531
9532         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9533                 goto nla_put_failure;
9534
9535         genlmsg_end(msg, hdr);
9536
9537         return genlmsg_reply(msg, info);
9538
9539  nla_put_failure:
9540         err = -ENOBUFS;
9541  free_msg:
9542         nlmsg_free(msg);
9543         return err;
9544 }
9545
9546 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9547 {
9548         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9549         struct cfg80211_beacon_registration *reg, *nreg;
9550         int rv;
9551
9552         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9553                 return -EOPNOTSUPP;
9554
9555         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9556         if (!nreg)
9557                 return -ENOMEM;
9558
9559         /* First, check if already registered. */
9560         spin_lock_bh(&rdev->beacon_registrations_lock);
9561         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9562                 if (reg->nlportid == info->snd_portid) {
9563                         rv = -EALREADY;
9564                         goto out_err;
9565                 }
9566         }
9567         /* Add it to the list */
9568         nreg->nlportid = info->snd_portid;
9569         list_add(&nreg->list, &rdev->beacon_registrations);
9570
9571         spin_unlock_bh(&rdev->beacon_registrations_lock);
9572
9573         return 0;
9574 out_err:
9575         spin_unlock_bh(&rdev->beacon_registrations_lock);
9576         kfree(nreg);
9577         return rv;
9578 }
9579
9580 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9581 {
9582         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9583         struct wireless_dev *wdev = info->user_ptr[1];
9584         int err;
9585
9586         if (!rdev->ops->start_p2p_device)
9587                 return -EOPNOTSUPP;
9588
9589         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9590                 return -EOPNOTSUPP;
9591
9592         if (wdev->p2p_started)
9593                 return 0;
9594
9595         if (rfkill_blocked(rdev->rfkill))
9596                 return -ERFKILL;
9597
9598         err = rdev_start_p2p_device(rdev, wdev);
9599         if (err)
9600                 return err;
9601
9602         wdev->p2p_started = true;
9603         rdev->opencount++;
9604
9605         return 0;
9606 }
9607
9608 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9609 {
9610         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9611         struct wireless_dev *wdev = info->user_ptr[1];
9612
9613         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9614                 return -EOPNOTSUPP;
9615
9616         if (!rdev->ops->stop_p2p_device)
9617                 return -EOPNOTSUPP;
9618
9619         cfg80211_stop_p2p_device(rdev, wdev);
9620
9621         return 0;
9622 }
9623
9624 static int nl80211_get_protocol_features(struct sk_buff *skb,
9625                                          struct genl_info *info)
9626 {
9627         void *hdr;
9628         struct sk_buff *msg;
9629
9630         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9631         if (!msg)
9632                 return -ENOMEM;
9633
9634         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9635                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9636         if (!hdr)
9637                 goto nla_put_failure;
9638
9639         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9640                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9641                 goto nla_put_failure;
9642
9643         genlmsg_end(msg, hdr);
9644         return genlmsg_reply(msg, info);
9645
9646  nla_put_failure:
9647         kfree_skb(msg);
9648         return -ENOBUFS;
9649 }
9650
9651 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9652 {
9653         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9654         struct cfg80211_update_ft_ies_params ft_params;
9655         struct net_device *dev = info->user_ptr[1];
9656
9657         if (!rdev->ops->update_ft_ies)
9658                 return -EOPNOTSUPP;
9659
9660         if (!info->attrs[NL80211_ATTR_MDID] ||
9661             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9662                 return -EINVAL;
9663
9664         memset(&ft_params, 0, sizeof(ft_params));
9665         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9666         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9667         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9668
9669         return rdev_update_ft_ies(rdev, dev, &ft_params);
9670 }
9671
9672 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9673                                        struct genl_info *info)
9674 {
9675         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9676         struct wireless_dev *wdev = info->user_ptr[1];
9677         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9678         u16 duration;
9679         int ret;
9680
9681         if (!rdev->ops->crit_proto_start)
9682                 return -EOPNOTSUPP;
9683
9684         if (WARN_ON(!rdev->ops->crit_proto_stop))
9685                 return -EINVAL;
9686
9687         if (rdev->crit_proto_nlportid)
9688                 return -EBUSY;
9689
9690         /* determine protocol if provided */
9691         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9692                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9693
9694         if (proto >= NUM_NL80211_CRIT_PROTO)
9695                 return -EINVAL;
9696
9697         /* timeout must be provided */
9698         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9699                 return -EINVAL;
9700
9701         duration =
9702                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9703
9704         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9705                 return -ERANGE;
9706
9707         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9708         if (!ret)
9709                 rdev->crit_proto_nlportid = info->snd_portid;
9710
9711         return ret;
9712 }
9713
9714 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9715                                       struct genl_info *info)
9716 {
9717         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9718         struct wireless_dev *wdev = info->user_ptr[1];
9719
9720         if (!rdev->ops->crit_proto_stop)
9721                 return -EOPNOTSUPP;
9722
9723         if (rdev->crit_proto_nlportid) {
9724                 rdev->crit_proto_nlportid = 0;
9725                 rdev_crit_proto_stop(rdev, wdev);
9726         }
9727         return 0;
9728 }
9729
9730 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9731 {
9732         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9733         struct wireless_dev *wdev =
9734                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9735         int i, err;
9736         u32 vid, subcmd;
9737
9738         if (!rdev->wiphy.vendor_commands)
9739                 return -EOPNOTSUPP;
9740
9741         if (IS_ERR(wdev)) {
9742                 err = PTR_ERR(wdev);
9743                 if (err != -EINVAL)
9744                         return err;
9745                 wdev = NULL;
9746         } else if (wdev->wiphy != &rdev->wiphy) {
9747                 return -EINVAL;
9748         }
9749
9750         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9751             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9752                 return -EINVAL;
9753
9754         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9755         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9756         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9757                 const struct wiphy_vendor_command *vcmd;
9758                 void *data = NULL;
9759                 int len = 0;
9760
9761                 vcmd = &rdev->wiphy.vendor_commands[i];
9762
9763                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9764                         continue;
9765
9766                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9767                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9768                         if (!wdev)
9769                                 return -EINVAL;
9770                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9771                             !wdev->netdev)
9772                                 return -EINVAL;
9773
9774                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9775                                 if (wdev->netdev &&
9776                                     !netif_running(wdev->netdev))
9777                                         return -ENETDOWN;
9778                                 if (!wdev->netdev && !wdev->p2p_started)
9779                                         return -ENETDOWN;
9780                         }
9781                 } else {
9782                         wdev = NULL;
9783                 }
9784
9785                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9786                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9787                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9788                 }
9789
9790                 rdev->cur_cmd_info = info;
9791                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9792                                                           data, len);
9793                 rdev->cur_cmd_info = NULL;
9794                 return err;
9795         }
9796
9797         return -EOPNOTSUPP;
9798 }
9799
9800 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9801                                            enum nl80211_commands cmd,
9802                                            enum nl80211_attrs attr,
9803                                            int approxlen)
9804 {
9805         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9806
9807         if (WARN_ON(!rdev->cur_cmd_info))
9808                 return NULL;
9809
9810         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9811                                            rdev->cur_cmd_info->snd_portid,
9812                                            rdev->cur_cmd_info->snd_seq,
9813                                            cmd, attr, NULL, GFP_KERNEL);
9814 }
9815 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9816
9817 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9818 {
9819         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9820         void *hdr = ((void **)skb->cb)[1];
9821         struct nlattr *data = ((void **)skb->cb)[2];
9822
9823         /* clear CB data for netlink core to own from now on */
9824         memset(skb->cb, 0, sizeof(skb->cb));
9825
9826         if (WARN_ON(!rdev->cur_cmd_info)) {
9827                 kfree_skb(skb);
9828                 return -EINVAL;
9829         }
9830
9831         nla_nest_end(skb, data);
9832         genlmsg_end(skb, hdr);
9833         return genlmsg_reply(skb, rdev->cur_cmd_info);
9834 }
9835 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9836
9837
9838 static int nl80211_set_qos_map(struct sk_buff *skb,
9839                                struct genl_info *info)
9840 {
9841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9842         struct cfg80211_qos_map *qos_map = NULL;
9843         struct net_device *dev = info->user_ptr[1];
9844         u8 *pos, len, num_des, des_len, des;
9845         int ret;
9846
9847         if (!rdev->ops->set_qos_map)
9848                 return -EOPNOTSUPP;
9849
9850         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9851                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9852                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9853
9854                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9855                     len > IEEE80211_QOS_MAP_LEN_MAX)
9856                         return -EINVAL;
9857
9858                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9859                 if (!qos_map)
9860                         return -ENOMEM;
9861
9862                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9863                 if (num_des) {
9864                         des_len = num_des *
9865                                 sizeof(struct cfg80211_dscp_exception);
9866                         memcpy(qos_map->dscp_exception, pos, des_len);
9867                         qos_map->num_des = num_des;
9868                         for (des = 0; des < num_des; des++) {
9869                                 if (qos_map->dscp_exception[des].up > 7) {
9870                                         kfree(qos_map);
9871                                         return -EINVAL;
9872                                 }
9873                         }
9874                         pos += des_len;
9875                 }
9876                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9877         }
9878
9879         wdev_lock(dev->ieee80211_ptr);
9880         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9881         if (!ret)
9882                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9883         wdev_unlock(dev->ieee80211_ptr);
9884
9885         kfree(qos_map);
9886         return ret;
9887 }
9888
9889 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9890 {
9891         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9892         struct net_device *dev = info->user_ptr[1];
9893         struct wireless_dev *wdev = dev->ieee80211_ptr;
9894         const u8 *peer;
9895         u8 tsid, up;
9896         u16 admitted_time = 0;
9897         int err;
9898
9899         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9900                 return -EOPNOTSUPP;
9901
9902         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9903             !info->attrs[NL80211_ATTR_USER_PRIO])
9904                 return -EINVAL;
9905
9906         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9907         if (tsid >= IEEE80211_NUM_TIDS)
9908                 return -EINVAL;
9909
9910         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9911         if (up >= IEEE80211_NUM_UPS)
9912                 return -EINVAL;
9913
9914         /* WMM uses TIDs 0-7 even for TSPEC */
9915         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9916                 /* TODO: handle 802.11 TSPEC/admission control
9917                  * need more attributes for that (e.g. BA session requirement);
9918                  * change the WMM adminssion test above to allow both then
9919                  */
9920                 return -EINVAL;
9921         }
9922
9923         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9924
9925         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9926                 admitted_time =
9927                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9928                 if (!admitted_time)
9929                         return -EINVAL;
9930         }
9931
9932         wdev_lock(wdev);
9933         switch (wdev->iftype) {
9934         case NL80211_IFTYPE_STATION:
9935         case NL80211_IFTYPE_P2P_CLIENT:
9936                 if (wdev->current_bss)
9937                         break;
9938                 err = -ENOTCONN;
9939                 goto out;
9940         default:
9941                 err = -EOPNOTSUPP;
9942                 goto out;
9943         }
9944
9945         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9946
9947  out:
9948         wdev_unlock(wdev);
9949         return err;
9950 }
9951
9952 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9953 {
9954         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9955         struct net_device *dev = info->user_ptr[1];
9956         struct wireless_dev *wdev = dev->ieee80211_ptr;
9957         const u8 *peer;
9958         u8 tsid;
9959         int err;
9960
9961         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9962                 return -EINVAL;
9963
9964         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9965         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9966
9967         wdev_lock(wdev);
9968         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9969         wdev_unlock(wdev);
9970
9971         return err;
9972 }
9973
9974 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
9975                                        struct genl_info *info)
9976 {
9977         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9978         struct net_device *dev = info->user_ptr[1];
9979         struct wireless_dev *wdev = dev->ieee80211_ptr;
9980         struct cfg80211_chan_def chandef = {};
9981         const u8 *addr;
9982         u8 oper_class;
9983         int err;
9984
9985         if (!rdev->ops->tdls_channel_switch ||
9986             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9987                 return -EOPNOTSUPP;
9988
9989         switch (dev->ieee80211_ptr->iftype) {
9990         case NL80211_IFTYPE_STATION:
9991         case NL80211_IFTYPE_P2P_CLIENT:
9992                 break;
9993         default:
9994                 return -EOPNOTSUPP;
9995         }
9996
9997         if (!info->attrs[NL80211_ATTR_MAC] ||
9998             !info->attrs[NL80211_ATTR_OPER_CLASS])
9999                 return -EINVAL;
10000
10001         err = nl80211_parse_chandef(rdev, info, &chandef);
10002         if (err)
10003                 return err;
10004
10005         /*
10006          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10007          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10008          * specification is not defined for them.
10009          */
10010         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10011             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10012             chandef.width != NL80211_CHAN_WIDTH_20)
10013                 return -EINVAL;
10014
10015         /* we will be active on the TDLS link */
10016         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10017                 return -EINVAL;
10018
10019         /* don't allow switching to DFS channels */
10020         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10021                 return -EINVAL;
10022
10023         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10024         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10025
10026         wdev_lock(wdev);
10027         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10028         wdev_unlock(wdev);
10029
10030         return err;
10031 }
10032
10033 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10034                                               struct genl_info *info)
10035 {
10036         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10037         struct net_device *dev = info->user_ptr[1];
10038         struct wireless_dev *wdev = dev->ieee80211_ptr;
10039         const u8 *addr;
10040
10041         if (!rdev->ops->tdls_channel_switch ||
10042             !rdev->ops->tdls_cancel_channel_switch ||
10043             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10044                 return -EOPNOTSUPP;
10045
10046         switch (dev->ieee80211_ptr->iftype) {
10047         case NL80211_IFTYPE_STATION:
10048         case NL80211_IFTYPE_P2P_CLIENT:
10049                 break;
10050         default:
10051                 return -EOPNOTSUPP;
10052         }
10053
10054         if (!info->attrs[NL80211_ATTR_MAC])
10055                 return -EINVAL;
10056
10057         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10058
10059         wdev_lock(wdev);
10060         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10061         wdev_unlock(wdev);
10062
10063         return 0;
10064 }
10065
10066 #define NL80211_FLAG_NEED_WIPHY         0x01
10067 #define NL80211_FLAG_NEED_NETDEV        0x02
10068 #define NL80211_FLAG_NEED_RTNL          0x04
10069 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10070 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10071                                          NL80211_FLAG_CHECK_NETDEV_UP)
10072 #define NL80211_FLAG_NEED_WDEV          0x10
10073 /* If a netdev is associated, it must be UP, P2P must be started */
10074 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10075                                          NL80211_FLAG_CHECK_NETDEV_UP)
10076 #define NL80211_FLAG_CLEAR_SKB          0x20
10077
10078 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10079                             struct genl_info *info)
10080 {
10081         struct cfg80211_registered_device *rdev;
10082         struct wireless_dev *wdev;
10083         struct net_device *dev;
10084         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10085
10086         if (rtnl)
10087                 rtnl_lock();
10088
10089         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10090                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10091                 if (IS_ERR(rdev)) {
10092                         if (rtnl)
10093                                 rtnl_unlock();
10094                         return PTR_ERR(rdev);
10095                 }
10096                 info->user_ptr[0] = rdev;
10097         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10098                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10099                 ASSERT_RTNL();
10100
10101                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10102                                                   info->attrs);
10103                 if (IS_ERR(wdev)) {
10104                         if (rtnl)
10105                                 rtnl_unlock();
10106                         return PTR_ERR(wdev);
10107                 }
10108
10109                 dev = wdev->netdev;
10110                 rdev = wiphy_to_rdev(wdev->wiphy);
10111
10112                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10113                         if (!dev) {
10114                                 if (rtnl)
10115                                         rtnl_unlock();
10116                                 return -EINVAL;
10117                         }
10118
10119                         info->user_ptr[1] = dev;
10120                 } else {
10121                         info->user_ptr[1] = wdev;
10122                 }
10123
10124                 if (dev) {
10125                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10126                             !netif_running(dev)) {
10127                                 if (rtnl)
10128                                         rtnl_unlock();
10129                                 return -ENETDOWN;
10130                         }
10131
10132                         dev_hold(dev);
10133                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10134                         if (!wdev->p2p_started) {
10135                                 if (rtnl)
10136                                         rtnl_unlock();
10137                                 return -ENETDOWN;
10138                         }
10139                 }
10140
10141                 info->user_ptr[0] = rdev;
10142         }
10143
10144         return 0;
10145 }
10146
10147 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10148                               struct genl_info *info)
10149 {
10150         if (info->user_ptr[1]) {
10151                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10152                         struct wireless_dev *wdev = info->user_ptr[1];
10153
10154                         if (wdev->netdev)
10155                                 dev_put(wdev->netdev);
10156                 } else {
10157                         dev_put(info->user_ptr[1]);
10158                 }
10159         }
10160
10161         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10162                 rtnl_unlock();
10163
10164         /* If needed, clear the netlink message payload from the SKB
10165          * as it might contain key data that shouldn't stick around on
10166          * the heap after the SKB is freed. The netlink message header
10167          * is still needed for further processing, so leave it intact.
10168          */
10169         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10170                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10171
10172                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10173         }
10174 }
10175
10176 static const struct genl_ops nl80211_ops[] = {
10177         {
10178                 .cmd = NL80211_CMD_GET_WIPHY,
10179                 .doit = nl80211_get_wiphy,
10180                 .dumpit = nl80211_dump_wiphy,
10181                 .done = nl80211_dump_wiphy_done,
10182                 .policy = nl80211_policy,
10183                 /* can be retrieved by unprivileged users */
10184                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10185                                   NL80211_FLAG_NEED_RTNL,
10186         },
10187         {
10188                 .cmd = NL80211_CMD_SET_WIPHY,
10189                 .doit = nl80211_set_wiphy,
10190                 .policy = nl80211_policy,
10191                 .flags = GENL_ADMIN_PERM,
10192                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10193         },
10194         {
10195                 .cmd = NL80211_CMD_GET_INTERFACE,
10196                 .doit = nl80211_get_interface,
10197                 .dumpit = nl80211_dump_interface,
10198                 .policy = nl80211_policy,
10199                 /* can be retrieved by unprivileged users */
10200                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10201                                   NL80211_FLAG_NEED_RTNL,
10202         },
10203         {
10204                 .cmd = NL80211_CMD_SET_INTERFACE,
10205                 .doit = nl80211_set_interface,
10206                 .policy = nl80211_policy,
10207                 .flags = GENL_ADMIN_PERM,
10208                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10209                                   NL80211_FLAG_NEED_RTNL,
10210         },
10211         {
10212                 .cmd = NL80211_CMD_NEW_INTERFACE,
10213                 .doit = nl80211_new_interface,
10214                 .policy = nl80211_policy,
10215                 .flags = GENL_ADMIN_PERM,
10216                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10217                                   NL80211_FLAG_NEED_RTNL,
10218         },
10219         {
10220                 .cmd = NL80211_CMD_DEL_INTERFACE,
10221                 .doit = nl80211_del_interface,
10222                 .policy = nl80211_policy,
10223                 .flags = GENL_ADMIN_PERM,
10224                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10225                                   NL80211_FLAG_NEED_RTNL,
10226         },
10227         {
10228                 .cmd = NL80211_CMD_GET_KEY,
10229                 .doit = nl80211_get_key,
10230                 .policy = nl80211_policy,
10231                 .flags = GENL_ADMIN_PERM,
10232                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10233                                   NL80211_FLAG_NEED_RTNL,
10234         },
10235         {
10236                 .cmd = NL80211_CMD_SET_KEY,
10237                 .doit = nl80211_set_key,
10238                 .policy = nl80211_policy,
10239                 .flags = GENL_ADMIN_PERM,
10240                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10241                                   NL80211_FLAG_NEED_RTNL |
10242                                   NL80211_FLAG_CLEAR_SKB,
10243         },
10244         {
10245                 .cmd = NL80211_CMD_NEW_KEY,
10246                 .doit = nl80211_new_key,
10247                 .policy = nl80211_policy,
10248                 .flags = GENL_ADMIN_PERM,
10249                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10250                                   NL80211_FLAG_NEED_RTNL |
10251                                   NL80211_FLAG_CLEAR_SKB,
10252         },
10253         {
10254                 .cmd = NL80211_CMD_DEL_KEY,
10255                 .doit = nl80211_del_key,
10256                 .policy = nl80211_policy,
10257                 .flags = GENL_ADMIN_PERM,
10258                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10259                                   NL80211_FLAG_NEED_RTNL,
10260         },
10261         {
10262                 .cmd = NL80211_CMD_SET_BEACON,
10263                 .policy = nl80211_policy,
10264                 .flags = GENL_ADMIN_PERM,
10265                 .doit = nl80211_set_beacon,
10266                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10267                                   NL80211_FLAG_NEED_RTNL,
10268         },
10269         {
10270                 .cmd = NL80211_CMD_START_AP,
10271                 .policy = nl80211_policy,
10272                 .flags = GENL_ADMIN_PERM,
10273                 .doit = nl80211_start_ap,
10274                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10275                                   NL80211_FLAG_NEED_RTNL,
10276         },
10277         {
10278                 .cmd = NL80211_CMD_STOP_AP,
10279                 .policy = nl80211_policy,
10280                 .flags = GENL_ADMIN_PERM,
10281                 .doit = nl80211_stop_ap,
10282                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10283                                   NL80211_FLAG_NEED_RTNL,
10284         },
10285         {
10286                 .cmd = NL80211_CMD_GET_STATION,
10287                 .doit = nl80211_get_station,
10288                 .dumpit = nl80211_dump_station,
10289                 .policy = nl80211_policy,
10290                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10291                                   NL80211_FLAG_NEED_RTNL,
10292         },
10293         {
10294                 .cmd = NL80211_CMD_SET_STATION,
10295                 .doit = nl80211_set_station,
10296                 .policy = nl80211_policy,
10297                 .flags = GENL_ADMIN_PERM,
10298                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10299                                   NL80211_FLAG_NEED_RTNL,
10300         },
10301         {
10302                 .cmd = NL80211_CMD_NEW_STATION,
10303                 .doit = nl80211_new_station,
10304                 .policy = nl80211_policy,
10305                 .flags = GENL_ADMIN_PERM,
10306                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10307                                   NL80211_FLAG_NEED_RTNL,
10308         },
10309         {
10310                 .cmd = NL80211_CMD_DEL_STATION,
10311                 .doit = nl80211_del_station,
10312                 .policy = nl80211_policy,
10313                 .flags = GENL_ADMIN_PERM,
10314                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10315                                   NL80211_FLAG_NEED_RTNL,
10316         },
10317         {
10318                 .cmd = NL80211_CMD_GET_MPATH,
10319                 .doit = nl80211_get_mpath,
10320                 .dumpit = nl80211_dump_mpath,
10321                 .policy = nl80211_policy,
10322                 .flags = GENL_ADMIN_PERM,
10323                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10324                                   NL80211_FLAG_NEED_RTNL,
10325         },
10326         {
10327                 .cmd = NL80211_CMD_GET_MPP,
10328                 .doit = nl80211_get_mpp,
10329                 .dumpit = nl80211_dump_mpp,
10330                 .policy = nl80211_policy,
10331                 .flags = GENL_ADMIN_PERM,
10332                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10333                                   NL80211_FLAG_NEED_RTNL,
10334         },
10335         {
10336                 .cmd = NL80211_CMD_SET_MPATH,
10337                 .doit = nl80211_set_mpath,
10338                 .policy = nl80211_policy,
10339                 .flags = GENL_ADMIN_PERM,
10340                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10341                                   NL80211_FLAG_NEED_RTNL,
10342         },
10343         {
10344                 .cmd = NL80211_CMD_NEW_MPATH,
10345                 .doit = nl80211_new_mpath,
10346                 .policy = nl80211_policy,
10347                 .flags = GENL_ADMIN_PERM,
10348                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10349                                   NL80211_FLAG_NEED_RTNL,
10350         },
10351         {
10352                 .cmd = NL80211_CMD_DEL_MPATH,
10353                 .doit = nl80211_del_mpath,
10354                 .policy = nl80211_policy,
10355                 .flags = GENL_ADMIN_PERM,
10356                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10357                                   NL80211_FLAG_NEED_RTNL,
10358         },
10359         {
10360                 .cmd = NL80211_CMD_SET_BSS,
10361                 .doit = nl80211_set_bss,
10362                 .policy = nl80211_policy,
10363                 .flags = GENL_ADMIN_PERM,
10364                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10365                                   NL80211_FLAG_NEED_RTNL,
10366         },
10367         {
10368                 .cmd = NL80211_CMD_GET_REG,
10369                 .doit = nl80211_get_reg_do,
10370                 .dumpit = nl80211_get_reg_dump,
10371                 .policy = nl80211_policy,
10372                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10373                 /* can be retrieved by unprivileged users */
10374         },
10375         {
10376                 .cmd = NL80211_CMD_SET_REG,
10377                 .doit = nl80211_set_reg,
10378                 .policy = nl80211_policy,
10379                 .flags = GENL_ADMIN_PERM,
10380                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10381         },
10382         {
10383                 .cmd = NL80211_CMD_REQ_SET_REG,
10384                 .doit = nl80211_req_set_reg,
10385                 .policy = nl80211_policy,
10386                 .flags = GENL_ADMIN_PERM,
10387         },
10388         {
10389                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10390                 .doit = nl80211_get_mesh_config,
10391                 .policy = nl80211_policy,
10392                 /* can be retrieved by unprivileged users */
10393                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10394                                   NL80211_FLAG_NEED_RTNL,
10395         },
10396         {
10397                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10398                 .doit = nl80211_update_mesh_config,
10399                 .policy = nl80211_policy,
10400                 .flags = GENL_ADMIN_PERM,
10401                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10402                                   NL80211_FLAG_NEED_RTNL,
10403         },
10404         {
10405                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10406                 .doit = nl80211_trigger_scan,
10407                 .policy = nl80211_policy,
10408                 .flags = GENL_ADMIN_PERM,
10409                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10410                                   NL80211_FLAG_NEED_RTNL,
10411         },
10412         {
10413                 .cmd = NL80211_CMD_GET_SCAN,
10414                 .policy = nl80211_policy,
10415                 .dumpit = nl80211_dump_scan,
10416         },
10417         {
10418                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10419                 .doit = nl80211_start_sched_scan,
10420                 .policy = nl80211_policy,
10421                 .flags = GENL_ADMIN_PERM,
10422                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10423                                   NL80211_FLAG_NEED_RTNL,
10424         },
10425         {
10426                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10427                 .doit = nl80211_stop_sched_scan,
10428                 .policy = nl80211_policy,
10429                 .flags = GENL_ADMIN_PERM,
10430                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10431                                   NL80211_FLAG_NEED_RTNL,
10432         },
10433         {
10434                 .cmd = NL80211_CMD_AUTHENTICATE,
10435                 .doit = nl80211_authenticate,
10436                 .policy = nl80211_policy,
10437                 .flags = GENL_ADMIN_PERM,
10438                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10439                                   NL80211_FLAG_NEED_RTNL |
10440                                   NL80211_FLAG_CLEAR_SKB,
10441         },
10442         {
10443                 .cmd = NL80211_CMD_ASSOCIATE,
10444                 .doit = nl80211_associate,
10445                 .policy = nl80211_policy,
10446                 .flags = GENL_ADMIN_PERM,
10447                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10448                                   NL80211_FLAG_NEED_RTNL,
10449         },
10450         {
10451                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10452                 .doit = nl80211_deauthenticate,
10453                 .policy = nl80211_policy,
10454                 .flags = GENL_ADMIN_PERM,
10455                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10456                                   NL80211_FLAG_NEED_RTNL,
10457         },
10458         {
10459                 .cmd = NL80211_CMD_DISASSOCIATE,
10460                 .doit = nl80211_disassociate,
10461                 .policy = nl80211_policy,
10462                 .flags = GENL_ADMIN_PERM,
10463                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10464                                   NL80211_FLAG_NEED_RTNL,
10465         },
10466         {
10467                 .cmd = NL80211_CMD_JOIN_IBSS,
10468                 .doit = nl80211_join_ibss,
10469                 .policy = nl80211_policy,
10470                 .flags = GENL_ADMIN_PERM,
10471                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10472                                   NL80211_FLAG_NEED_RTNL,
10473         },
10474         {
10475                 .cmd = NL80211_CMD_LEAVE_IBSS,
10476                 .doit = nl80211_leave_ibss,
10477                 .policy = nl80211_policy,
10478                 .flags = GENL_ADMIN_PERM,
10479                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10480                                   NL80211_FLAG_NEED_RTNL,
10481         },
10482 #ifdef CONFIG_NL80211_TESTMODE
10483         {
10484                 .cmd = NL80211_CMD_TESTMODE,
10485                 .doit = nl80211_testmode_do,
10486                 .dumpit = nl80211_testmode_dump,
10487                 .policy = nl80211_policy,
10488                 .flags = GENL_ADMIN_PERM,
10489                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10490                                   NL80211_FLAG_NEED_RTNL,
10491         },
10492 #endif
10493         {
10494                 .cmd = NL80211_CMD_CONNECT,
10495                 .doit = nl80211_connect,
10496                 .policy = nl80211_policy,
10497                 .flags = GENL_ADMIN_PERM,
10498                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10499                                   NL80211_FLAG_NEED_RTNL,
10500         },
10501         {
10502                 .cmd = NL80211_CMD_DISCONNECT,
10503                 .doit = nl80211_disconnect,
10504                 .policy = nl80211_policy,
10505                 .flags = GENL_ADMIN_PERM,
10506                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10507                                   NL80211_FLAG_NEED_RTNL,
10508         },
10509         {
10510                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10511                 .doit = nl80211_wiphy_netns,
10512                 .policy = nl80211_policy,
10513                 .flags = GENL_ADMIN_PERM,
10514                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10515                                   NL80211_FLAG_NEED_RTNL,
10516         },
10517         {
10518                 .cmd = NL80211_CMD_GET_SURVEY,
10519                 .policy = nl80211_policy,
10520                 .dumpit = nl80211_dump_survey,
10521         },
10522         {
10523                 .cmd = NL80211_CMD_SET_PMKSA,
10524                 .doit = nl80211_setdel_pmksa,
10525                 .policy = nl80211_policy,
10526                 .flags = GENL_ADMIN_PERM,
10527                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10528                                   NL80211_FLAG_NEED_RTNL,
10529         },
10530         {
10531                 .cmd = NL80211_CMD_DEL_PMKSA,
10532                 .doit = nl80211_setdel_pmksa,
10533                 .policy = nl80211_policy,
10534                 .flags = GENL_ADMIN_PERM,
10535                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10536                                   NL80211_FLAG_NEED_RTNL,
10537         },
10538         {
10539                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10540                 .doit = nl80211_flush_pmksa,
10541                 .policy = nl80211_policy,
10542                 .flags = GENL_ADMIN_PERM,
10543                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10544                                   NL80211_FLAG_NEED_RTNL,
10545         },
10546         {
10547                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10548                 .doit = nl80211_remain_on_channel,
10549                 .policy = nl80211_policy,
10550                 .flags = GENL_ADMIN_PERM,
10551                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10552                                   NL80211_FLAG_NEED_RTNL,
10553         },
10554         {
10555                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10556                 .doit = nl80211_cancel_remain_on_channel,
10557                 .policy = nl80211_policy,
10558                 .flags = GENL_ADMIN_PERM,
10559                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10560                                   NL80211_FLAG_NEED_RTNL,
10561         },
10562         {
10563                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10564                 .doit = nl80211_set_tx_bitrate_mask,
10565                 .policy = nl80211_policy,
10566                 .flags = GENL_ADMIN_PERM,
10567                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10568                                   NL80211_FLAG_NEED_RTNL,
10569         },
10570         {
10571                 .cmd = NL80211_CMD_REGISTER_FRAME,
10572                 .doit = nl80211_register_mgmt,
10573                 .policy = nl80211_policy,
10574                 .flags = GENL_ADMIN_PERM,
10575                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10576                                   NL80211_FLAG_NEED_RTNL,
10577         },
10578         {
10579                 .cmd = NL80211_CMD_FRAME,
10580                 .doit = nl80211_tx_mgmt,
10581                 .policy = nl80211_policy,
10582                 .flags = GENL_ADMIN_PERM,
10583                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10584                                   NL80211_FLAG_NEED_RTNL,
10585         },
10586         {
10587                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10588                 .doit = nl80211_tx_mgmt_cancel_wait,
10589                 .policy = nl80211_policy,
10590                 .flags = GENL_ADMIN_PERM,
10591                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10592                                   NL80211_FLAG_NEED_RTNL,
10593         },
10594         {
10595                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10596                 .doit = nl80211_set_power_save,
10597                 .policy = nl80211_policy,
10598                 .flags = GENL_ADMIN_PERM,
10599                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10600                                   NL80211_FLAG_NEED_RTNL,
10601         },
10602         {
10603                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10604                 .doit = nl80211_get_power_save,
10605                 .policy = nl80211_policy,
10606                 /* can be retrieved by unprivileged users */
10607                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10608                                   NL80211_FLAG_NEED_RTNL,
10609         },
10610         {
10611                 .cmd = NL80211_CMD_SET_CQM,
10612                 .doit = nl80211_set_cqm,
10613                 .policy = nl80211_policy,
10614                 .flags = GENL_ADMIN_PERM,
10615                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10616                                   NL80211_FLAG_NEED_RTNL,
10617         },
10618         {
10619                 .cmd = NL80211_CMD_SET_CHANNEL,
10620                 .doit = nl80211_set_channel,
10621                 .policy = nl80211_policy,
10622                 .flags = GENL_ADMIN_PERM,
10623                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10624                                   NL80211_FLAG_NEED_RTNL,
10625         },
10626         {
10627                 .cmd = NL80211_CMD_SET_WDS_PEER,
10628                 .doit = nl80211_set_wds_peer,
10629                 .policy = nl80211_policy,
10630                 .flags = GENL_ADMIN_PERM,
10631                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10632                                   NL80211_FLAG_NEED_RTNL,
10633         },
10634         {
10635                 .cmd = NL80211_CMD_JOIN_MESH,
10636                 .doit = nl80211_join_mesh,
10637                 .policy = nl80211_policy,
10638                 .flags = GENL_ADMIN_PERM,
10639                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10640                                   NL80211_FLAG_NEED_RTNL,
10641         },
10642         {
10643                 .cmd = NL80211_CMD_LEAVE_MESH,
10644                 .doit = nl80211_leave_mesh,
10645                 .policy = nl80211_policy,
10646                 .flags = GENL_ADMIN_PERM,
10647                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10648                                   NL80211_FLAG_NEED_RTNL,
10649         },
10650         {
10651                 .cmd = NL80211_CMD_JOIN_OCB,
10652                 .doit = nl80211_join_ocb,
10653                 .policy = nl80211_policy,
10654                 .flags = GENL_ADMIN_PERM,
10655                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10656                                   NL80211_FLAG_NEED_RTNL,
10657         },
10658         {
10659                 .cmd = NL80211_CMD_LEAVE_OCB,
10660                 .doit = nl80211_leave_ocb,
10661                 .policy = nl80211_policy,
10662                 .flags = GENL_ADMIN_PERM,
10663                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10664                                   NL80211_FLAG_NEED_RTNL,
10665         },
10666 #ifdef CONFIG_PM
10667         {
10668                 .cmd = NL80211_CMD_GET_WOWLAN,
10669                 .doit = nl80211_get_wowlan,
10670                 .policy = nl80211_policy,
10671                 /* can be retrieved by unprivileged users */
10672                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10673                                   NL80211_FLAG_NEED_RTNL,
10674         },
10675         {
10676                 .cmd = NL80211_CMD_SET_WOWLAN,
10677                 .doit = nl80211_set_wowlan,
10678                 .policy = nl80211_policy,
10679                 .flags = GENL_ADMIN_PERM,
10680                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10681                                   NL80211_FLAG_NEED_RTNL,
10682         },
10683 #endif
10684         {
10685                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10686                 .doit = nl80211_set_rekey_data,
10687                 .policy = nl80211_policy,
10688                 .flags = GENL_ADMIN_PERM,
10689                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10690                                   NL80211_FLAG_NEED_RTNL |
10691                                   NL80211_FLAG_CLEAR_SKB,
10692         },
10693         {
10694                 .cmd = NL80211_CMD_TDLS_MGMT,
10695                 .doit = nl80211_tdls_mgmt,
10696                 .policy = nl80211_policy,
10697                 .flags = GENL_ADMIN_PERM,
10698                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10699                                   NL80211_FLAG_NEED_RTNL,
10700         },
10701         {
10702                 .cmd = NL80211_CMD_TDLS_OPER,
10703                 .doit = nl80211_tdls_oper,
10704                 .policy = nl80211_policy,
10705                 .flags = GENL_ADMIN_PERM,
10706                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10707                                   NL80211_FLAG_NEED_RTNL,
10708         },
10709         {
10710                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10711                 .doit = nl80211_register_unexpected_frame,
10712                 .policy = nl80211_policy,
10713                 .flags = GENL_ADMIN_PERM,
10714                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10715                                   NL80211_FLAG_NEED_RTNL,
10716         },
10717         {
10718                 .cmd = NL80211_CMD_PROBE_CLIENT,
10719                 .doit = nl80211_probe_client,
10720                 .policy = nl80211_policy,
10721                 .flags = GENL_ADMIN_PERM,
10722                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10723                                   NL80211_FLAG_NEED_RTNL,
10724         },
10725         {
10726                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10727                 .doit = nl80211_register_beacons,
10728                 .policy = nl80211_policy,
10729                 .flags = GENL_ADMIN_PERM,
10730                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10731                                   NL80211_FLAG_NEED_RTNL,
10732         },
10733         {
10734                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10735                 .doit = nl80211_set_noack_map,
10736                 .policy = nl80211_policy,
10737                 .flags = GENL_ADMIN_PERM,
10738                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10739                                   NL80211_FLAG_NEED_RTNL,
10740         },
10741         {
10742                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10743                 .doit = nl80211_start_p2p_device,
10744                 .policy = nl80211_policy,
10745                 .flags = GENL_ADMIN_PERM,
10746                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10747                                   NL80211_FLAG_NEED_RTNL,
10748         },
10749         {
10750                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10751                 .doit = nl80211_stop_p2p_device,
10752                 .policy = nl80211_policy,
10753                 .flags = GENL_ADMIN_PERM,
10754                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10755                                   NL80211_FLAG_NEED_RTNL,
10756         },
10757         {
10758                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10759                 .doit = nl80211_set_mcast_rate,
10760                 .policy = nl80211_policy,
10761                 .flags = GENL_ADMIN_PERM,
10762                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10763                                   NL80211_FLAG_NEED_RTNL,
10764         },
10765         {
10766                 .cmd = NL80211_CMD_SET_MAC_ACL,
10767                 .doit = nl80211_set_mac_acl,
10768                 .policy = nl80211_policy,
10769                 .flags = GENL_ADMIN_PERM,
10770                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10771                                   NL80211_FLAG_NEED_RTNL,
10772         },
10773         {
10774                 .cmd = NL80211_CMD_RADAR_DETECT,
10775                 .doit = nl80211_start_radar_detection,
10776                 .policy = nl80211_policy,
10777                 .flags = GENL_ADMIN_PERM,
10778                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10779                                   NL80211_FLAG_NEED_RTNL,
10780         },
10781         {
10782                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10783                 .doit = nl80211_get_protocol_features,
10784                 .policy = nl80211_policy,
10785         },
10786         {
10787                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10788                 .doit = nl80211_update_ft_ies,
10789                 .policy = nl80211_policy,
10790                 .flags = GENL_ADMIN_PERM,
10791                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10792                                   NL80211_FLAG_NEED_RTNL,
10793         },
10794         {
10795                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10796                 .doit = nl80211_crit_protocol_start,
10797                 .policy = nl80211_policy,
10798                 .flags = GENL_ADMIN_PERM,
10799                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10800                                   NL80211_FLAG_NEED_RTNL,
10801         },
10802         {
10803                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10804                 .doit = nl80211_crit_protocol_stop,
10805                 .policy = nl80211_policy,
10806                 .flags = GENL_ADMIN_PERM,
10807                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10808                                   NL80211_FLAG_NEED_RTNL,
10809         },
10810         {
10811                 .cmd = NL80211_CMD_GET_COALESCE,
10812                 .doit = nl80211_get_coalesce,
10813                 .policy = nl80211_policy,
10814                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10815                                   NL80211_FLAG_NEED_RTNL,
10816         },
10817         {
10818                 .cmd = NL80211_CMD_SET_COALESCE,
10819                 .doit = nl80211_set_coalesce,
10820                 .policy = nl80211_policy,
10821                 .flags = GENL_ADMIN_PERM,
10822                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10823                                   NL80211_FLAG_NEED_RTNL,
10824         },
10825         {
10826                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10827                 .doit = nl80211_channel_switch,
10828                 .policy = nl80211_policy,
10829                 .flags = GENL_ADMIN_PERM,
10830                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10831                                   NL80211_FLAG_NEED_RTNL,
10832         },
10833         {
10834                 .cmd = NL80211_CMD_VENDOR,
10835                 .doit = nl80211_vendor_cmd,
10836                 .policy = nl80211_policy,
10837                 .flags = GENL_ADMIN_PERM,
10838                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10839                                   NL80211_FLAG_NEED_RTNL,
10840         },
10841         {
10842                 .cmd = NL80211_CMD_SET_QOS_MAP,
10843                 .doit = nl80211_set_qos_map,
10844                 .policy = nl80211_policy,
10845                 .flags = GENL_ADMIN_PERM,
10846                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10847                                   NL80211_FLAG_NEED_RTNL,
10848         },
10849         {
10850                 .cmd = NL80211_CMD_ADD_TX_TS,
10851                 .doit = nl80211_add_tx_ts,
10852                 .policy = nl80211_policy,
10853                 .flags = GENL_ADMIN_PERM,
10854                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10855                                   NL80211_FLAG_NEED_RTNL,
10856         },
10857         {
10858                 .cmd = NL80211_CMD_DEL_TX_TS,
10859                 .doit = nl80211_del_tx_ts,
10860                 .policy = nl80211_policy,
10861                 .flags = GENL_ADMIN_PERM,
10862                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10863                                   NL80211_FLAG_NEED_RTNL,
10864         },
10865         {
10866                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10867                 .doit = nl80211_tdls_channel_switch,
10868                 .policy = nl80211_policy,
10869                 .flags = GENL_ADMIN_PERM,
10870                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10871                                   NL80211_FLAG_NEED_RTNL,
10872         },
10873         {
10874                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10875                 .doit = nl80211_tdls_cancel_channel_switch,
10876                 .policy = nl80211_policy,
10877                 .flags = GENL_ADMIN_PERM,
10878                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10879                                   NL80211_FLAG_NEED_RTNL,
10880         },
10881 };
10882
10883 /* notification functions */
10884
10885 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10886                           enum nl80211_commands cmd)
10887 {
10888         struct sk_buff *msg;
10889         struct nl80211_dump_wiphy_state state = {};
10890
10891         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10892                 cmd != NL80211_CMD_DEL_WIPHY);
10893
10894         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10895         if (!msg)
10896                 return;
10897
10898         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10899                 nlmsg_free(msg);
10900                 return;
10901         }
10902
10903         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10904                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10905 }
10906
10907 static int nl80211_add_scan_req(struct sk_buff *msg,
10908                                 struct cfg80211_registered_device *rdev)
10909 {
10910         struct cfg80211_scan_request *req = rdev->scan_req;
10911         struct nlattr *nest;
10912         int i;
10913
10914         if (WARN_ON(!req))
10915                 return 0;
10916
10917         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10918         if (!nest)
10919                 goto nla_put_failure;
10920         for (i = 0; i < req->n_ssids; i++) {
10921                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10922                         goto nla_put_failure;
10923         }
10924         nla_nest_end(msg, nest);
10925
10926         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10927         if (!nest)
10928                 goto nla_put_failure;
10929         for (i = 0; i < req->n_channels; i++) {
10930                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10931                         goto nla_put_failure;
10932         }
10933         nla_nest_end(msg, nest);
10934
10935         if (req->ie &&
10936             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10937                 goto nla_put_failure;
10938
10939         if (req->flags &&
10940             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10941                 goto nla_put_failure;
10942
10943         return 0;
10944  nla_put_failure:
10945         return -ENOBUFS;
10946 }
10947
10948 static int nl80211_send_scan_msg(struct sk_buff *msg,
10949                                  struct cfg80211_registered_device *rdev,
10950                                  struct wireless_dev *wdev,
10951                                  u32 portid, u32 seq, int flags,
10952                                  u32 cmd)
10953 {
10954         void *hdr;
10955
10956         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10957         if (!hdr)
10958                 return -1;
10959
10960         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10961             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10962                                          wdev->netdev->ifindex)) ||
10963             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10964                 goto nla_put_failure;
10965
10966         /* ignore errors and send incomplete event anyway */
10967         nl80211_add_scan_req(msg, rdev);
10968
10969         return genlmsg_end(msg, hdr);
10970
10971  nla_put_failure:
10972         genlmsg_cancel(msg, hdr);
10973         return -EMSGSIZE;
10974 }
10975
10976 static int
10977 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10978                             struct cfg80211_registered_device *rdev,
10979                             struct net_device *netdev,
10980                             u32 portid, u32 seq, int flags, u32 cmd)
10981 {
10982         void *hdr;
10983
10984         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10985         if (!hdr)
10986                 return -1;
10987
10988         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10989             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10990                 goto nla_put_failure;
10991
10992         return genlmsg_end(msg, hdr);
10993
10994  nla_put_failure:
10995         genlmsg_cancel(msg, hdr);
10996         return -EMSGSIZE;
10997 }
10998
10999 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11000                              struct wireless_dev *wdev)
11001 {
11002         struct sk_buff *msg;
11003
11004         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11005         if (!msg)
11006                 return;
11007
11008         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11009                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
11010                 nlmsg_free(msg);
11011                 return;
11012         }
11013
11014         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11015                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11016 }
11017
11018 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11019                                        struct wireless_dev *wdev, bool aborted)
11020 {
11021         struct sk_buff *msg;
11022
11023         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11024         if (!msg)
11025                 return NULL;
11026
11027         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11028                                   aborted ? NL80211_CMD_SCAN_ABORTED :
11029                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11030                 nlmsg_free(msg);
11031                 return NULL;
11032         }
11033
11034         return msg;
11035 }
11036
11037 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11038                               struct sk_buff *msg)
11039 {
11040         if (!msg)
11041                 return;
11042
11043         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11044                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11045 }
11046
11047 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11048                                      struct net_device *netdev)
11049 {
11050         struct sk_buff *msg;
11051
11052         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11053         if (!msg)
11054                 return;
11055
11056         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11057                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11058                 nlmsg_free(msg);
11059                 return;
11060         }
11061
11062         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11063                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11064 }
11065
11066 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11067                              struct net_device *netdev, u32 cmd)
11068 {
11069         struct sk_buff *msg;
11070
11071         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11072         if (!msg)
11073                 return;
11074
11075         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11076                 nlmsg_free(msg);
11077                 return;
11078         }
11079
11080         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11081                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11082 }
11083
11084 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11085                                           struct regulatory_request *request)
11086 {
11087         /* Userspace can always count this one always being set */
11088         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11089                 goto nla_put_failure;
11090
11091         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11092                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11093                                NL80211_REGDOM_TYPE_WORLD))
11094                         goto nla_put_failure;
11095         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11096                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11097                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11098                         goto nla_put_failure;
11099         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11100                    request->intersect) {
11101                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11102                                NL80211_REGDOM_TYPE_INTERSECTION))
11103                         goto nla_put_failure;
11104         } else {
11105                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11106                                NL80211_REGDOM_TYPE_COUNTRY) ||
11107                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11108                                    request->alpha2))
11109                         goto nla_put_failure;
11110         }
11111
11112         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11113                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11114
11115                 if (wiphy &&
11116                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11117                         goto nla_put_failure;
11118
11119                 if (wiphy &&
11120                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11121                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11122                         goto nla_put_failure;
11123         }
11124
11125         return true;
11126
11127 nla_put_failure:
11128         return false;
11129 }
11130
11131 /*
11132  * This can happen on global regulatory changes or device specific settings
11133  * based on custom regulatory domains.
11134  */
11135 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11136                                      struct regulatory_request *request)
11137 {
11138         struct sk_buff *msg;
11139         void *hdr;
11140
11141         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11142         if (!msg)
11143                 return;
11144
11145         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11146         if (!hdr) {
11147                 nlmsg_free(msg);
11148                 return;
11149         }
11150
11151         if (nl80211_reg_change_event_fill(msg, request) == false)
11152                 goto nla_put_failure;
11153
11154         genlmsg_end(msg, hdr);
11155
11156         rcu_read_lock();
11157         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11158                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11159         rcu_read_unlock();
11160
11161         return;
11162
11163 nla_put_failure:
11164         genlmsg_cancel(msg, hdr);
11165         nlmsg_free(msg);
11166 }
11167
11168 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11169                                     struct net_device *netdev,
11170                                     const u8 *buf, size_t len,
11171                                     enum nl80211_commands cmd, gfp_t gfp,
11172                                     int uapsd_queues)
11173 {
11174         struct sk_buff *msg;
11175         void *hdr;
11176
11177         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11178         if (!msg)
11179                 return;
11180
11181         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11182         if (!hdr) {
11183                 nlmsg_free(msg);
11184                 return;
11185         }
11186
11187         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11188             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11189             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11190                 goto nla_put_failure;
11191
11192         if (uapsd_queues >= 0) {
11193                 struct nlattr *nla_wmm =
11194                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11195                 if (!nla_wmm)
11196                         goto nla_put_failure;
11197
11198                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11199                                uapsd_queues))
11200                         goto nla_put_failure;
11201
11202                 nla_nest_end(msg, nla_wmm);
11203         }
11204
11205         genlmsg_end(msg, hdr);
11206
11207         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11208                                 NL80211_MCGRP_MLME, gfp);
11209         return;
11210
11211  nla_put_failure:
11212         genlmsg_cancel(msg, hdr);
11213         nlmsg_free(msg);
11214 }
11215
11216 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11217                           struct net_device *netdev, const u8 *buf,
11218                           size_t len, gfp_t gfp)
11219 {
11220         nl80211_send_mlme_event(rdev, netdev, buf, len,
11221                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11222 }
11223
11224 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11225                            struct net_device *netdev, const u8 *buf,
11226                            size_t len, gfp_t gfp, int uapsd_queues)
11227 {
11228         nl80211_send_mlme_event(rdev, netdev, buf, len,
11229                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11230 }
11231
11232 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11233                          struct net_device *netdev, const u8 *buf,
11234                          size_t len, gfp_t gfp)
11235 {
11236         nl80211_send_mlme_event(rdev, netdev, buf, len,
11237                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11238 }
11239
11240 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11241                            struct net_device *netdev, const u8 *buf,
11242                            size_t len, gfp_t gfp)
11243 {
11244         nl80211_send_mlme_event(rdev, netdev, buf, len,
11245                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11246 }
11247
11248 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11249                                   size_t len)
11250 {
11251         struct wireless_dev *wdev = dev->ieee80211_ptr;
11252         struct wiphy *wiphy = wdev->wiphy;
11253         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11254         const struct ieee80211_mgmt *mgmt = (void *)buf;
11255         u32 cmd;
11256
11257         if (WARN_ON(len < 2))
11258                 return;
11259
11260         if (ieee80211_is_deauth(mgmt->frame_control))
11261                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11262         else
11263                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11264
11265         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11266         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11267 }
11268 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11269
11270 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11271                                       struct net_device *netdev, int cmd,
11272                                       const u8 *addr, gfp_t gfp)
11273 {
11274         struct sk_buff *msg;
11275         void *hdr;
11276
11277         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11278         if (!msg)
11279                 return;
11280
11281         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11282         if (!hdr) {
11283                 nlmsg_free(msg);
11284                 return;
11285         }
11286
11287         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11288             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11289             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11290             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11291                 goto nla_put_failure;
11292
11293         genlmsg_end(msg, hdr);
11294
11295         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11296                                 NL80211_MCGRP_MLME, gfp);
11297         return;
11298
11299  nla_put_failure:
11300         genlmsg_cancel(msg, hdr);
11301         nlmsg_free(msg);
11302 }
11303
11304 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11305                                struct net_device *netdev, const u8 *addr,
11306                                gfp_t gfp)
11307 {
11308         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11309                                   addr, gfp);
11310 }
11311
11312 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11313                                 struct net_device *netdev, const u8 *addr,
11314                                 gfp_t gfp)
11315 {
11316         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11317                                   addr, gfp);
11318 }
11319
11320 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11321                                  struct net_device *netdev, const u8 *bssid,
11322                                  const u8 *req_ie, size_t req_ie_len,
11323                                  const u8 *resp_ie, size_t resp_ie_len,
11324                                  u16 status, gfp_t gfp)
11325 {
11326         struct sk_buff *msg;
11327         void *hdr;
11328
11329         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11330         if (!msg)
11331                 return;
11332
11333         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11334         if (!hdr) {
11335                 nlmsg_free(msg);
11336                 return;
11337         }
11338
11339         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11340             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11341             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11342             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11343             (req_ie &&
11344              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11345             (resp_ie &&
11346              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11347                 goto nla_put_failure;
11348
11349         genlmsg_end(msg, hdr);
11350
11351         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11352                                 NL80211_MCGRP_MLME, gfp);
11353         return;
11354
11355  nla_put_failure:
11356         genlmsg_cancel(msg, hdr);
11357         nlmsg_free(msg);
11358
11359 }
11360
11361 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11362                          struct net_device *netdev, const u8 *bssid,
11363                          const u8 *req_ie, size_t req_ie_len,
11364                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11365 {
11366         struct sk_buff *msg;
11367         void *hdr;
11368
11369         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11370         if (!msg)
11371                 return;
11372
11373         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11374         if (!hdr) {
11375                 nlmsg_free(msg);
11376                 return;
11377         }
11378
11379         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11380             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11381             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11382             (req_ie &&
11383              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11384             (resp_ie &&
11385              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11386                 goto nla_put_failure;
11387
11388         genlmsg_end(msg, hdr);
11389
11390         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11391                                 NL80211_MCGRP_MLME, gfp);
11392         return;
11393
11394  nla_put_failure:
11395         genlmsg_cancel(msg, hdr);
11396         nlmsg_free(msg);
11397
11398 }
11399
11400 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11401                                struct net_device *netdev, u16 reason,
11402                                const u8 *ie, size_t ie_len, bool from_ap)
11403 {
11404         struct sk_buff *msg;
11405         void *hdr;
11406
11407         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11408         if (!msg)
11409                 return;
11410
11411         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11412         if (!hdr) {
11413                 nlmsg_free(msg);
11414                 return;
11415         }
11416
11417         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11418             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11419             (from_ap && reason &&
11420              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11421             (from_ap &&
11422              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11423             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11424                 goto nla_put_failure;
11425
11426         genlmsg_end(msg, hdr);
11427
11428         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11429                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11430         return;
11431
11432  nla_put_failure:
11433         genlmsg_cancel(msg, hdr);
11434         nlmsg_free(msg);
11435
11436 }
11437
11438 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11439                              struct net_device *netdev, const u8 *bssid,
11440                              gfp_t gfp)
11441 {
11442         struct sk_buff *msg;
11443         void *hdr;
11444
11445         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11446         if (!msg)
11447                 return;
11448
11449         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11450         if (!hdr) {
11451                 nlmsg_free(msg);
11452                 return;
11453         }
11454
11455         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11456             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11457             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11458                 goto nla_put_failure;
11459
11460         genlmsg_end(msg, hdr);
11461
11462         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11463                                 NL80211_MCGRP_MLME, gfp);
11464         return;
11465
11466  nla_put_failure:
11467         genlmsg_cancel(msg, hdr);
11468         nlmsg_free(msg);
11469 }
11470
11471 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11472                                         const u8* ie, u8 ie_len, gfp_t gfp)
11473 {
11474         struct wireless_dev *wdev = dev->ieee80211_ptr;
11475         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11476         struct sk_buff *msg;
11477         void *hdr;
11478
11479         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11480                 return;
11481
11482         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11483
11484         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11485         if (!msg)
11486                 return;
11487
11488         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11489         if (!hdr) {
11490                 nlmsg_free(msg);
11491                 return;
11492         }
11493
11494         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11495             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11496             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11497             (ie_len && ie &&
11498              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11499                 goto nla_put_failure;
11500
11501         genlmsg_end(msg, hdr);
11502
11503         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11504                                 NL80211_MCGRP_MLME, gfp);
11505         return;
11506
11507  nla_put_failure:
11508         genlmsg_cancel(msg, hdr);
11509         nlmsg_free(msg);
11510 }
11511 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11512
11513 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11514                                  struct net_device *netdev, const u8 *addr,
11515                                  enum nl80211_key_type key_type, int key_id,
11516                                  const u8 *tsc, gfp_t gfp)
11517 {
11518         struct sk_buff *msg;
11519         void *hdr;
11520
11521         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11522         if (!msg)
11523                 return;
11524
11525         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11526         if (!hdr) {
11527                 nlmsg_free(msg);
11528                 return;
11529         }
11530
11531         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11532             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11533             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11534             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11535             (key_id != -1 &&
11536              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11537             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11538                 goto nla_put_failure;
11539
11540         genlmsg_end(msg, hdr);
11541
11542         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11543                                 NL80211_MCGRP_MLME, gfp);
11544         return;
11545
11546  nla_put_failure:
11547         genlmsg_cancel(msg, hdr);
11548         nlmsg_free(msg);
11549 }
11550
11551 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11552                                     struct ieee80211_channel *channel_before,
11553                                     struct ieee80211_channel *channel_after)
11554 {
11555         struct sk_buff *msg;
11556         void *hdr;
11557         struct nlattr *nl_freq;
11558
11559         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11560         if (!msg)
11561                 return;
11562
11563         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11564         if (!hdr) {
11565                 nlmsg_free(msg);
11566                 return;
11567         }
11568
11569         /*
11570          * Since we are applying the beacon hint to a wiphy we know its
11571          * wiphy_idx is valid
11572          */
11573         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11574                 goto nla_put_failure;
11575
11576         /* Before */
11577         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11578         if (!nl_freq)
11579                 goto nla_put_failure;
11580         if (nl80211_msg_put_channel(msg, channel_before, false))
11581                 goto nla_put_failure;
11582         nla_nest_end(msg, nl_freq);
11583
11584         /* After */
11585         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11586         if (!nl_freq)
11587                 goto nla_put_failure;
11588         if (nl80211_msg_put_channel(msg, channel_after, false))
11589                 goto nla_put_failure;
11590         nla_nest_end(msg, nl_freq);
11591
11592         genlmsg_end(msg, hdr);
11593
11594         rcu_read_lock();
11595         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11596                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11597         rcu_read_unlock();
11598
11599         return;
11600
11601 nla_put_failure:
11602         genlmsg_cancel(msg, hdr);
11603         nlmsg_free(msg);
11604 }
11605
11606 static void nl80211_send_remain_on_chan_event(
11607         int cmd, struct cfg80211_registered_device *rdev,
11608         struct wireless_dev *wdev, u64 cookie,
11609         struct ieee80211_channel *chan,
11610         unsigned int duration, gfp_t gfp)
11611 {
11612         struct sk_buff *msg;
11613         void *hdr;
11614
11615         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11616         if (!msg)
11617                 return;
11618
11619         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11620         if (!hdr) {
11621                 nlmsg_free(msg);
11622                 return;
11623         }
11624
11625         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11626             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11627                                          wdev->netdev->ifindex)) ||
11628             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11629             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11630             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11631                         NL80211_CHAN_NO_HT) ||
11632             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11633                 goto nla_put_failure;
11634
11635         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11636             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11637                 goto nla_put_failure;
11638
11639         genlmsg_end(msg, hdr);
11640
11641         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11642                                 NL80211_MCGRP_MLME, gfp);
11643         return;
11644
11645  nla_put_failure:
11646         genlmsg_cancel(msg, hdr);
11647         nlmsg_free(msg);
11648 }
11649
11650 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11651                                struct ieee80211_channel *chan,
11652                                unsigned int duration, gfp_t gfp)
11653 {
11654         struct wiphy *wiphy = wdev->wiphy;
11655         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11656
11657         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11658         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11659                                           rdev, wdev, cookie, chan,
11660                                           duration, gfp);
11661 }
11662 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11663
11664 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11665                                         struct ieee80211_channel *chan,
11666                                         gfp_t gfp)
11667 {
11668         struct wiphy *wiphy = wdev->wiphy;
11669         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11670
11671         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11672         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11673                                           rdev, wdev, cookie, chan, 0, gfp);
11674 }
11675 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11676
11677 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11678                       struct station_info *sinfo, gfp_t gfp)
11679 {
11680         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11681         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11682         struct sk_buff *msg;
11683
11684         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11685
11686         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11687         if (!msg)
11688                 return;
11689
11690         if (nl80211_send_station(msg, 0, 0, 0,
11691                                  rdev, dev, mac_addr, sinfo) < 0) {
11692                 nlmsg_free(msg);
11693                 return;
11694         }
11695
11696         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11697                                 NL80211_MCGRP_MLME, gfp);
11698 }
11699 EXPORT_SYMBOL(cfg80211_new_sta);
11700
11701 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11702 {
11703         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11704         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11705         struct sk_buff *msg;
11706         void *hdr;
11707
11708         trace_cfg80211_del_sta(dev, mac_addr);
11709
11710         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11711         if (!msg)
11712                 return;
11713
11714         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11715         if (!hdr) {
11716                 nlmsg_free(msg);
11717                 return;
11718         }
11719
11720         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11721             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11722                 goto nla_put_failure;
11723
11724         genlmsg_end(msg, hdr);
11725
11726         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11727                                 NL80211_MCGRP_MLME, gfp);
11728         return;
11729
11730  nla_put_failure:
11731         genlmsg_cancel(msg, hdr);
11732         nlmsg_free(msg);
11733 }
11734 EXPORT_SYMBOL(cfg80211_del_sta);
11735
11736 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11737                           enum nl80211_connect_failed_reason reason,
11738                           gfp_t gfp)
11739 {
11740         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11741         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11742         struct sk_buff *msg;
11743         void *hdr;
11744
11745         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11746         if (!msg)
11747                 return;
11748
11749         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11750         if (!hdr) {
11751                 nlmsg_free(msg);
11752                 return;
11753         }
11754
11755         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11756             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11757             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11758                 goto nla_put_failure;
11759
11760         genlmsg_end(msg, hdr);
11761
11762         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11763                                 NL80211_MCGRP_MLME, gfp);
11764         return;
11765
11766  nla_put_failure:
11767         genlmsg_cancel(msg, hdr);
11768         nlmsg_free(msg);
11769 }
11770 EXPORT_SYMBOL(cfg80211_conn_failed);
11771
11772 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11773                                        const u8 *addr, gfp_t gfp)
11774 {
11775         struct wireless_dev *wdev = dev->ieee80211_ptr;
11776         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11777         struct sk_buff *msg;
11778         void *hdr;
11779         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11780
11781         if (!nlportid)
11782                 return false;
11783
11784         msg = nlmsg_new(100, gfp);
11785         if (!msg)
11786                 return true;
11787
11788         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11789         if (!hdr) {
11790                 nlmsg_free(msg);
11791                 return true;
11792         }
11793
11794         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11795             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11796             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11797                 goto nla_put_failure;
11798
11799         genlmsg_end(msg, hdr);
11800         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11801         return true;
11802
11803  nla_put_failure:
11804         genlmsg_cancel(msg, hdr);
11805         nlmsg_free(msg);
11806         return true;
11807 }
11808
11809 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11810                                 const u8 *addr, gfp_t gfp)
11811 {
11812         struct wireless_dev *wdev = dev->ieee80211_ptr;
11813         bool ret;
11814
11815         trace_cfg80211_rx_spurious_frame(dev, addr);
11816
11817         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11818                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11819                 trace_cfg80211_return_bool(false);
11820                 return false;
11821         }
11822         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11823                                          addr, gfp);
11824         trace_cfg80211_return_bool(ret);
11825         return ret;
11826 }
11827 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11828
11829 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11830                                         const u8 *addr, gfp_t gfp)
11831 {
11832         struct wireless_dev *wdev = dev->ieee80211_ptr;
11833         bool ret;
11834
11835         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11836
11837         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11838                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11839                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11840                 trace_cfg80211_return_bool(false);
11841                 return false;
11842         }
11843         ret = __nl80211_unexpected_frame(dev,
11844                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11845                                          addr, gfp);
11846         trace_cfg80211_return_bool(ret);
11847         return ret;
11848 }
11849 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11850
11851 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11852                       struct wireless_dev *wdev, u32 nlportid,
11853                       int freq, int sig_dbm,
11854                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11855 {
11856         struct net_device *netdev = wdev->netdev;
11857         struct sk_buff *msg;
11858         void *hdr;
11859
11860         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11861         if (!msg)
11862                 return -ENOMEM;
11863
11864         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11865         if (!hdr) {
11866                 nlmsg_free(msg);
11867                 return -ENOMEM;
11868         }
11869
11870         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11871             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11872                                         netdev->ifindex)) ||
11873             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11874             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11875             (sig_dbm &&
11876              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11877             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11878             (flags &&
11879              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11880                 goto nla_put_failure;
11881
11882         genlmsg_end(msg, hdr);
11883
11884         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11885
11886  nla_put_failure:
11887         genlmsg_cancel(msg, hdr);
11888         nlmsg_free(msg);
11889         return -ENOBUFS;
11890 }
11891
11892 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11893                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
11894 {
11895         struct wiphy *wiphy = wdev->wiphy;
11896         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11897         struct net_device *netdev = wdev->netdev;
11898         struct sk_buff *msg;
11899         void *hdr;
11900
11901         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11902
11903         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11904         if (!msg)
11905                 return;
11906
11907         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11908         if (!hdr) {
11909                 nlmsg_free(msg);
11910                 return;
11911         }
11912
11913         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11914             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11915                                    netdev->ifindex)) ||
11916             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11917             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11918             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11919             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11920                 goto nla_put_failure;
11921
11922         genlmsg_end(msg, hdr);
11923
11924         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11925                                 NL80211_MCGRP_MLME, gfp);
11926         return;
11927
11928  nla_put_failure:
11929         genlmsg_cancel(msg, hdr);
11930         nlmsg_free(msg);
11931 }
11932 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11933
11934 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11935                                             const char *mac, gfp_t gfp)
11936 {
11937         struct wireless_dev *wdev = dev->ieee80211_ptr;
11938         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11939         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11940         void **cb;
11941
11942         if (!msg)
11943                 return NULL;
11944
11945         cb = (void **)msg->cb;
11946
11947         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11948         if (!cb[0]) {
11949                 nlmsg_free(msg);
11950                 return NULL;
11951         }
11952
11953         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11954             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11955                 goto nla_put_failure;
11956
11957         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
11958                 goto nla_put_failure;
11959
11960         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
11961         if (!cb[1])
11962                 goto nla_put_failure;
11963
11964         cb[2] = rdev;
11965
11966         return msg;
11967  nla_put_failure:
11968         nlmsg_free(msg);
11969         return NULL;
11970 }
11971
11972 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
11973 {
11974         void **cb = (void **)msg->cb;
11975         struct cfg80211_registered_device *rdev = cb[2];
11976
11977         nla_nest_end(msg, cb[1]);
11978         genlmsg_end(msg, cb[0]);
11979
11980         memset(msg->cb, 0, sizeof(msg->cb));
11981
11982         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11983                                 NL80211_MCGRP_MLME, gfp);
11984 }
11985
11986 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11987                               enum nl80211_cqm_rssi_threshold_event rssi_event,
11988                               gfp_t gfp)
11989 {
11990         struct sk_buff *msg;
11991
11992         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11993
11994         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
11995                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
11996                 return;
11997
11998         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11999         if (!msg)
12000                 return;
12001
12002         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12003                         rssi_event))
12004                 goto nla_put_failure;
12005
12006         cfg80211_send_cqm(msg, gfp);
12007
12008         return;
12009
12010  nla_put_failure:
12011         nlmsg_free(msg);
12012 }
12013 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12014
12015 void cfg80211_cqm_txe_notify(struct net_device *dev,
12016                              const u8 *peer, u32 num_packets,
12017                              u32 rate, u32 intvl, gfp_t gfp)
12018 {
12019         struct sk_buff *msg;
12020
12021         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12022         if (!msg)
12023                 return;
12024
12025         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12026                 goto nla_put_failure;
12027
12028         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12029                 goto nla_put_failure;
12030
12031         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12032                 goto nla_put_failure;
12033
12034         cfg80211_send_cqm(msg, gfp);
12035         return;
12036
12037  nla_put_failure:
12038         nlmsg_free(msg);
12039 }
12040 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12041
12042 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12043                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12044 {
12045         struct sk_buff *msg;
12046
12047         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12048
12049         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12050         if (!msg)
12051                 return;
12052
12053         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12054                 goto nla_put_failure;
12055
12056         cfg80211_send_cqm(msg, gfp);
12057         return;
12058
12059  nla_put_failure:
12060         nlmsg_free(msg);
12061 }
12062 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12063
12064 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12065 {
12066         struct sk_buff *msg;
12067
12068         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12069         if (!msg)
12070                 return;
12071
12072         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12073                 goto nla_put_failure;
12074
12075         cfg80211_send_cqm(msg, gfp);
12076         return;
12077
12078  nla_put_failure:
12079         nlmsg_free(msg);
12080 }
12081 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12082
12083 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12084                                      struct net_device *netdev, const u8 *bssid,
12085                                      const u8 *replay_ctr, gfp_t gfp)
12086 {
12087         struct sk_buff *msg;
12088         struct nlattr *rekey_attr;
12089         void *hdr;
12090
12091         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12092         if (!msg)
12093                 return;
12094
12095         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12096         if (!hdr) {
12097                 nlmsg_free(msg);
12098                 return;
12099         }
12100
12101         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12102             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12103             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12104                 goto nla_put_failure;
12105
12106         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12107         if (!rekey_attr)
12108                 goto nla_put_failure;
12109
12110         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12111                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12112                 goto nla_put_failure;
12113
12114         nla_nest_end(msg, rekey_attr);
12115
12116         genlmsg_end(msg, hdr);
12117
12118         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12119                                 NL80211_MCGRP_MLME, gfp);
12120         return;
12121
12122  nla_put_failure:
12123         genlmsg_cancel(msg, hdr);
12124         nlmsg_free(msg);
12125 }
12126
12127 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12128                                const u8 *replay_ctr, gfp_t gfp)
12129 {
12130         struct wireless_dev *wdev = dev->ieee80211_ptr;
12131         struct wiphy *wiphy = wdev->wiphy;
12132         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12133
12134         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12135         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12136 }
12137 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12138
12139 static void
12140 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12141                                struct net_device *netdev, int index,
12142                                const u8 *bssid, bool preauth, gfp_t gfp)
12143 {
12144         struct sk_buff *msg;
12145         struct nlattr *attr;
12146         void *hdr;
12147
12148         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12149         if (!msg)
12150                 return;
12151
12152         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12153         if (!hdr) {
12154                 nlmsg_free(msg);
12155                 return;
12156         }
12157
12158         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12159             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12160                 goto nla_put_failure;
12161
12162         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12163         if (!attr)
12164                 goto nla_put_failure;
12165
12166         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12167             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12168             (preauth &&
12169              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12170                 goto nla_put_failure;
12171
12172         nla_nest_end(msg, attr);
12173
12174         genlmsg_end(msg, hdr);
12175
12176         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12177                                 NL80211_MCGRP_MLME, gfp);
12178         return;
12179
12180  nla_put_failure:
12181         genlmsg_cancel(msg, hdr);
12182         nlmsg_free(msg);
12183 }
12184
12185 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12186                                      const u8 *bssid, bool preauth, gfp_t gfp)
12187 {
12188         struct wireless_dev *wdev = dev->ieee80211_ptr;
12189         struct wiphy *wiphy = wdev->wiphy;
12190         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12191
12192         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12193         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12194 }
12195 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12196
12197 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12198                                      struct net_device *netdev,
12199                                      struct cfg80211_chan_def *chandef,
12200                                      gfp_t gfp,
12201                                      enum nl80211_commands notif,
12202                                      u8 count)
12203 {
12204         struct sk_buff *msg;
12205         void *hdr;
12206
12207         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12208         if (!msg)
12209                 return;
12210
12211         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12212         if (!hdr) {
12213                 nlmsg_free(msg);
12214                 return;
12215         }
12216
12217         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12218                 goto nla_put_failure;
12219
12220         if (nl80211_send_chandef(msg, chandef))
12221                 goto nla_put_failure;
12222
12223         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12224             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12225                         goto nla_put_failure;
12226
12227         genlmsg_end(msg, hdr);
12228
12229         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12230                                 NL80211_MCGRP_MLME, gfp);
12231         return;
12232
12233  nla_put_failure:
12234         genlmsg_cancel(msg, hdr);
12235         nlmsg_free(msg);
12236 }
12237
12238 void cfg80211_ch_switch_notify(struct net_device *dev,
12239                                struct cfg80211_chan_def *chandef)
12240 {
12241         struct wireless_dev *wdev = dev->ieee80211_ptr;
12242         struct wiphy *wiphy = wdev->wiphy;
12243         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12244
12245         ASSERT_WDEV_LOCK(wdev);
12246
12247         trace_cfg80211_ch_switch_notify(dev, chandef);
12248
12249         wdev->chandef = *chandef;
12250         wdev->preset_chandef = *chandef;
12251         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12252                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12253 }
12254 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12255
12256 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12257                                        struct cfg80211_chan_def *chandef,
12258                                        u8 count)
12259 {
12260         struct wireless_dev *wdev = dev->ieee80211_ptr;
12261         struct wiphy *wiphy = wdev->wiphy;
12262         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12263
12264         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12265
12266         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12267                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12268 }
12269 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12270
12271 void
12272 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12273                      const struct cfg80211_chan_def *chandef,
12274                      enum nl80211_radar_event event,
12275                      struct net_device *netdev, gfp_t gfp)
12276 {
12277         struct sk_buff *msg;
12278         void *hdr;
12279
12280         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12281         if (!msg)
12282                 return;
12283
12284         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12285         if (!hdr) {
12286                 nlmsg_free(msg);
12287                 return;
12288         }
12289
12290         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12291                 goto nla_put_failure;
12292
12293         /* NOP and radar events don't need a netdev parameter */
12294         if (netdev) {
12295                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12296
12297                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12298                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12299                         goto nla_put_failure;
12300         }
12301
12302         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12303                 goto nla_put_failure;
12304
12305         if (nl80211_send_chandef(msg, chandef))
12306                 goto nla_put_failure;
12307
12308         genlmsg_end(msg, hdr);
12309
12310         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12311                                 NL80211_MCGRP_MLME, gfp);
12312         return;
12313
12314  nla_put_failure:
12315         genlmsg_cancel(msg, hdr);
12316         nlmsg_free(msg);
12317 }
12318
12319 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12320                            u64 cookie, bool acked, gfp_t gfp)
12321 {
12322         struct wireless_dev *wdev = dev->ieee80211_ptr;
12323         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12324         struct sk_buff *msg;
12325         void *hdr;
12326
12327         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12328
12329         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12330
12331         if (!msg)
12332                 return;
12333
12334         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12335         if (!hdr) {
12336                 nlmsg_free(msg);
12337                 return;
12338         }
12339
12340         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12341             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12342             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12343             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12344             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12345                 goto nla_put_failure;
12346
12347         genlmsg_end(msg, hdr);
12348
12349         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12350                                 NL80211_MCGRP_MLME, gfp);
12351         return;
12352
12353  nla_put_failure:
12354         genlmsg_cancel(msg, hdr);
12355         nlmsg_free(msg);
12356 }
12357 EXPORT_SYMBOL(cfg80211_probe_status);
12358
12359 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12360                                  const u8 *frame, size_t len,
12361                                  int freq, int sig_dbm)
12362 {
12363         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12364         struct sk_buff *msg;
12365         void *hdr;
12366         struct cfg80211_beacon_registration *reg;
12367
12368         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12369
12370         spin_lock_bh(&rdev->beacon_registrations_lock);
12371         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12372                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12373                 if (!msg) {
12374                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12375                         return;
12376                 }
12377
12378                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12379                 if (!hdr)
12380                         goto nla_put_failure;
12381
12382                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12383                     (freq &&
12384                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12385                     (sig_dbm &&
12386                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12387                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12388                         goto nla_put_failure;
12389
12390                 genlmsg_end(msg, hdr);
12391
12392                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12393         }
12394         spin_unlock_bh(&rdev->beacon_registrations_lock);
12395         return;
12396
12397  nla_put_failure:
12398         spin_unlock_bh(&rdev->beacon_registrations_lock);
12399         if (hdr)
12400                 genlmsg_cancel(msg, hdr);
12401         nlmsg_free(msg);
12402 }
12403 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12404
12405 #ifdef CONFIG_PM
12406 static int cfg80211_net_detect_results(struct sk_buff *msg,
12407                                        struct cfg80211_wowlan_wakeup *wakeup)
12408 {
12409         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12410         struct nlattr *nl_results, *nl_match, *nl_freqs;
12411         int i, j;
12412
12413         nl_results = nla_nest_start(
12414                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12415         if (!nl_results)
12416                 return -EMSGSIZE;
12417
12418         for (i = 0; i < nd->n_matches; i++) {
12419                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12420
12421                 nl_match = nla_nest_start(msg, i);
12422                 if (!nl_match)
12423                         break;
12424
12425                 /* The SSID attribute is optional in nl80211, but for
12426                  * simplicity reasons it's always present in the
12427                  * cfg80211 structure.  If a driver can't pass the
12428                  * SSID, that needs to be changed.  A zero length SSID
12429                  * is still a valid SSID (wildcard), so it cannot be
12430                  * used for this purpose.
12431                  */
12432                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12433                             match->ssid.ssid)) {
12434                         nla_nest_cancel(msg, nl_match);
12435                         goto out;
12436                 }
12437
12438                 if (match->n_channels) {
12439                         nl_freqs = nla_nest_start(
12440                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12441                         if (!nl_freqs) {
12442                                 nla_nest_cancel(msg, nl_match);
12443                                 goto out;
12444                         }
12445
12446                         for (j = 0; j < match->n_channels; j++) {
12447                                 if (nla_put_u32(msg,
12448                                                 NL80211_ATTR_WIPHY_FREQ,
12449                                                 match->channels[j])) {
12450                                         nla_nest_cancel(msg, nl_freqs);
12451                                         nla_nest_cancel(msg, nl_match);
12452                                         goto out;
12453                                 }
12454                         }
12455
12456                         nla_nest_end(msg, nl_freqs);
12457                 }
12458
12459                 nla_nest_end(msg, nl_match);
12460         }
12461
12462 out:
12463         nla_nest_end(msg, nl_results);
12464         return 0;
12465 }
12466
12467 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12468                                    struct cfg80211_wowlan_wakeup *wakeup,
12469                                    gfp_t gfp)
12470 {
12471         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12472         struct sk_buff *msg;
12473         void *hdr;
12474         int size = 200;
12475
12476         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12477
12478         if (wakeup)
12479                 size += wakeup->packet_present_len;
12480
12481         msg = nlmsg_new(size, gfp);
12482         if (!msg)
12483                 return;
12484
12485         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12486         if (!hdr)
12487                 goto free_msg;
12488
12489         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12490             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12491                 goto free_msg;
12492
12493         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12494                                         wdev->netdev->ifindex))
12495                 goto free_msg;
12496
12497         if (wakeup) {
12498                 struct nlattr *reasons;
12499
12500                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12501                 if (!reasons)
12502                         goto free_msg;
12503
12504                 if (wakeup->disconnect &&
12505                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12506                         goto free_msg;
12507                 if (wakeup->magic_pkt &&
12508                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12509                         goto free_msg;
12510                 if (wakeup->gtk_rekey_failure &&
12511                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12512                         goto free_msg;
12513                 if (wakeup->eap_identity_req &&
12514                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12515                         goto free_msg;
12516                 if (wakeup->four_way_handshake &&
12517                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12518                         goto free_msg;
12519                 if (wakeup->rfkill_release &&
12520                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12521                         goto free_msg;
12522
12523                 if (wakeup->pattern_idx >= 0 &&
12524                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12525                                 wakeup->pattern_idx))
12526                         goto free_msg;
12527
12528                 if (wakeup->tcp_match &&
12529                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12530                         goto free_msg;
12531
12532                 if (wakeup->tcp_connlost &&
12533                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12534                         goto free_msg;
12535
12536                 if (wakeup->tcp_nomoretokens &&
12537                     nla_put_flag(msg,
12538                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12539                         goto free_msg;
12540
12541                 if (wakeup->packet) {
12542                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12543                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12544
12545                         if (!wakeup->packet_80211) {
12546                                 pkt_attr =
12547                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12548                                 len_attr =
12549                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12550                         }
12551
12552                         if (wakeup->packet_len &&
12553                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12554                                 goto free_msg;
12555
12556                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12557                                     wakeup->packet))
12558                                 goto free_msg;
12559                 }
12560
12561                 if (wakeup->net_detect &&
12562                     cfg80211_net_detect_results(msg, wakeup))
12563                                 goto free_msg;
12564
12565                 nla_nest_end(msg, reasons);
12566         }
12567
12568         genlmsg_end(msg, hdr);
12569
12570         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12571                                 NL80211_MCGRP_MLME, gfp);
12572         return;
12573
12574  free_msg:
12575         nlmsg_free(msg);
12576 }
12577 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12578 #endif
12579
12580 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12581                                 enum nl80211_tdls_operation oper,
12582                                 u16 reason_code, gfp_t gfp)
12583 {
12584         struct wireless_dev *wdev = dev->ieee80211_ptr;
12585         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12586         struct sk_buff *msg;
12587         void *hdr;
12588
12589         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12590                                          reason_code);
12591
12592         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12593         if (!msg)
12594                 return;
12595
12596         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12597         if (!hdr) {
12598                 nlmsg_free(msg);
12599                 return;
12600         }
12601
12602         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12603             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12604             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12605             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12606             (reason_code > 0 &&
12607              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12608                 goto nla_put_failure;
12609
12610         genlmsg_end(msg, hdr);
12611
12612         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12613                                 NL80211_MCGRP_MLME, gfp);
12614         return;
12615
12616  nla_put_failure:
12617         genlmsg_cancel(msg, hdr);
12618         nlmsg_free(msg);
12619 }
12620 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12621
12622 static int nl80211_netlink_notify(struct notifier_block * nb,
12623                                   unsigned long state,
12624                                   void *_notify)
12625 {
12626         struct netlink_notify *notify = _notify;
12627         struct cfg80211_registered_device *rdev;
12628         struct wireless_dev *wdev;
12629         struct cfg80211_beacon_registration *reg, *tmp;
12630
12631         if (state != NETLINK_URELEASE)
12632                 return NOTIFY_DONE;
12633
12634         rcu_read_lock();
12635
12636         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12637                 bool schedule_destroy_work = false;
12638                 bool schedule_scan_stop = false;
12639                 struct cfg80211_sched_scan_request *sched_scan_req =
12640                         rcu_dereference(rdev->sched_scan_req);
12641
12642                 if (sched_scan_req && notify->portid &&
12643                     sched_scan_req->owner_nlportid == notify->portid)
12644                         schedule_scan_stop = true;
12645
12646                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12647                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12648
12649                         if (wdev->owner_nlportid == notify->portid)
12650                                 schedule_destroy_work = true;
12651                 }
12652
12653                 spin_lock_bh(&rdev->beacon_registrations_lock);
12654                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12655                                          list) {
12656                         if (reg->nlportid == notify->portid) {
12657                                 list_del(&reg->list);
12658                                 kfree(reg);
12659                                 break;
12660                         }
12661                 }
12662                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12663
12664                 if (schedule_destroy_work) {
12665                         struct cfg80211_iface_destroy *destroy;
12666
12667                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12668                         if (destroy) {
12669                                 destroy->nlportid = notify->portid;
12670                                 spin_lock(&rdev->destroy_list_lock);
12671                                 list_add(&destroy->list, &rdev->destroy_list);
12672                                 spin_unlock(&rdev->destroy_list_lock);
12673                                 schedule_work(&rdev->destroy_work);
12674                         }
12675                 } else if (schedule_scan_stop) {
12676                         sched_scan_req->owner_nlportid = 0;
12677
12678                         if (rdev->ops->sched_scan_stop &&
12679                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12680                                 schedule_work(&rdev->sched_scan_stop_wk);
12681                 }
12682         }
12683
12684         rcu_read_unlock();
12685
12686         return NOTIFY_OK;
12687 }
12688
12689 static struct notifier_block nl80211_netlink_notifier = {
12690         .notifier_call = nl80211_netlink_notify,
12691 };
12692
12693 void cfg80211_ft_event(struct net_device *netdev,
12694                        struct cfg80211_ft_event_params *ft_event)
12695 {
12696         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12697         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12698         struct sk_buff *msg;
12699         void *hdr;
12700
12701         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12702
12703         if (!ft_event->target_ap)
12704                 return;
12705
12706         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12707         if (!msg)
12708                 return;
12709
12710         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12711         if (!hdr)
12712                 goto out;
12713
12714         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12715             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12716             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12717                 goto out;
12718
12719         if (ft_event->ies &&
12720             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12721                 goto out;
12722         if (ft_event->ric_ies &&
12723             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12724                     ft_event->ric_ies))
12725                 goto out;
12726
12727         genlmsg_end(msg, hdr);
12728
12729         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12730                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12731         return;
12732  out:
12733         nlmsg_free(msg);
12734 }
12735 EXPORT_SYMBOL(cfg80211_ft_event);
12736
12737 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12738 {
12739         struct cfg80211_registered_device *rdev;
12740         struct sk_buff *msg;
12741         void *hdr;
12742         u32 nlportid;
12743
12744         rdev = wiphy_to_rdev(wdev->wiphy);
12745         if (!rdev->crit_proto_nlportid)
12746                 return;
12747
12748         nlportid = rdev->crit_proto_nlportid;
12749         rdev->crit_proto_nlportid = 0;
12750
12751         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12752         if (!msg)
12753                 return;
12754
12755         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12756         if (!hdr)
12757                 goto nla_put_failure;
12758
12759         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12760             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12761                 goto nla_put_failure;
12762
12763         genlmsg_end(msg, hdr);
12764
12765         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12766         return;
12767
12768  nla_put_failure:
12769         if (hdr)
12770                 genlmsg_cancel(msg, hdr);
12771         nlmsg_free(msg);
12772
12773 }
12774 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12775
12776 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12777 {
12778         struct wiphy *wiphy = wdev->wiphy;
12779         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12780         struct sk_buff *msg;
12781         void *hdr;
12782
12783         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12784         if (!msg)
12785                 return;
12786
12787         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12788         if (!hdr)
12789                 goto out;
12790
12791         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12792             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12793             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12794                 goto out;
12795
12796         genlmsg_end(msg, hdr);
12797
12798         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12799                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12800         return;
12801  out:
12802         nlmsg_free(msg);
12803 }
12804
12805 /* initialisation/exit functions */
12806
12807 int nl80211_init(void)
12808 {
12809         int err;
12810
12811         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12812                                                    nl80211_mcgrps);
12813         if (err)
12814                 return err;
12815
12816         err = netlink_register_notifier(&nl80211_netlink_notifier);
12817         if (err)
12818                 goto err_out;
12819
12820         return 0;
12821  err_out:
12822         genl_unregister_family(&nl80211_fam);
12823         return err;
12824 }
12825
12826 void nl80211_exit(void)
12827 {
12828         netlink_unregister_notifier(&nl80211_netlink_notifier);
12829         genl_unregister_family(&nl80211_fam);
12830 }