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 = "config", },
  63         [NL80211_MCGRP_SCAN] = { .name = "scan", },
  64         [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
  65         [NL80211_MCGRP_MLME] = { .name = "mlme", },
  66         [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
  67 #ifdef CONFIG_NL80211_TESTMODE
  68         [NL80211_MCGRP_TESTMODE] = { .name = "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 };
 400
 401 /* policy for the key attributes */
 402 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 403         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 404         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 405         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 406         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 407         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 408         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 409         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 410         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 411 };
 412
 413 /* policy for the key default flags */
 414 static const struct nla_policy
 415 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 416         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 417         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 418 };
 419
 420 /* policy for WoWLAN attributes */
 421 static const struct nla_policy
 422 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 423         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 424         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 425         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 426         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 427         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 428         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 431         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 432         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 433 };
 434
 435 static const struct nla_policy
 436 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 437         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 438         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 439         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 440         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 441         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 442         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 443         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 444                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 445         },
 446         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 447                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 448         },
 449         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 450         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 451         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 452 };
 453
 454 /* policy for coalesce rule attributes */
 455 static const struct nla_policy
 456 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 457         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 458         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 459         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 460 };
 461
 462 /* policy for GTK rekey offload attributes */
 463 static const struct nla_policy
 464 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 465         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 466         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 467         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 468 };
 469
 470 static const struct nla_policy
 471 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 472         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 473                                                  .len = IEEE80211_MAX_SSID_LEN },
 474         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 475 };
 476
 477 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 478                                      struct netlink_callback *cb,
 479                                      struct cfg80211_registered_device **rdev,
 480                                      struct wireless_dev **wdev)
 481 {
 482         int err;
 483
 484         rtnl_lock();
 485
 486         if (!cb->args[0]) {
 487                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 488                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 489                                   nl80211_policy);
 490                 if (err)
 491                         goto out_unlock;
 492
 493                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 494                                                    nl80211_fam.attrbuf);
 495                 if (IS_ERR(*wdev)) {
 496                         err = PTR_ERR(*wdev);
 497                         goto out_unlock;
 498                 }
 499                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 500                 /* 0 is the first index - add 1 to parse only once */
 501                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 502                 cb->args[1] = (*wdev)->identifier;
 503         } else {
 504                 /* subtract the 1 again here */
 505                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 506                 struct wireless_dev *tmp;
 507
 508                 if (!wiphy) {
 509                         err = -ENODEV;
 510                         goto out_unlock;
 511                 }
 512                 *rdev = wiphy_to_rdev(wiphy);
 513                 *wdev = NULL;
 514
 515                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 516                         if (tmp->identifier == cb->args[1]) {
 517                                 *wdev = tmp;
 518                                 break;
 519                         }
 520                 }
 521
 522                 if (!*wdev) {
 523                         err = -ENODEV;
 524                         goto out_unlock;
 525                 }
 526         }
 527
 528         return 0;
 529  out_unlock:
 530         rtnl_unlock();
 531         return err;
 532 }
 533
 534 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 535 {
 536         rtnl_unlock();
 537 }
 538
 539 /* IE validation */
 540 static bool is_valid_ie_attr(const struct nlattr *attr)
 541 {
 542         const u8 *pos;
 543         int len;
 544
 545         if (!attr)
 546                 return true;
 547
 548         pos = nla_data(attr);
 549         len = nla_len(attr);
 550
 551         while (len) {
 552                 u8 elemlen;
 553
 554                 if (len < 2)
 555                         return false;
 556                 len -= 2;
 557
 558                 elemlen = pos[1];
 559                 if (elemlen > len)
 560                         return false;
 561
 562                 len -= elemlen;
 563                 pos += 2 + elemlen;
 564         }
 565
 566         return true;
 567 }
 568
 569 /* message building helper */
 570 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 571                                    int flags, u8 cmd)
 572 {
 573         /* since there is no private header just add the generic one */
 574         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 575 }
 576
 577 static int nl80211_msg_put_channel(struct sk_buff *msg,
 578                                    struct ieee80211_channel *chan,
 579                                    bool large)
 580 {
 581         /* Some channels must be completely excluded from the
 582          * list to protect old user-space tools from breaking
 583          */
 584         if (!large && chan->flags &
 585             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 586                 return 0;
 587
 588         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 589                         chan->center_freq))
 590                 goto nla_put_failure;
 591
 592         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 593             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 594                 goto nla_put_failure;
 595         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 596                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 597                         goto nla_put_failure;
 598                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 599                         goto nla_put_failure;
 600         }
 601         if (chan->flags & IEEE80211_CHAN_RADAR) {
 602                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 603                         goto nla_put_failure;
 604                 if (large) {
 605                         u32 time;
 606
 607                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 608
 609                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 610                                         chan->dfs_state))
 611                                 goto nla_put_failure;
 612                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 613                                         time))
 614                                 goto nla_put_failure;
 615                         if (nla_put_u32(msg,
 616                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 617                                         chan->dfs_cac_ms))
 618                                 goto nla_put_failure;
 619                 }
 620         }
 621
 622         if (large) {
 623                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 624                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 625                         goto nla_put_failure;
 626                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 627                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 628                         goto nla_put_failure;
 629                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 630                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 631                         goto nla_put_failure;
 632                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 633                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 634                         goto nla_put_failure;
 635                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 636                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 637                         goto nla_put_failure;
 638                 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
 639                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
 640                         goto nla_put_failure;
 641                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 642                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 643                         goto nla_put_failure;
 644                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 645                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 646                         goto nla_put_failure;
 647         }
 648
 649         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 650                         DBM_TO_MBM(chan->max_power)))
 651                 goto nla_put_failure;
 652
 653         return 0;
 654
 655  nla_put_failure:
 656         return -ENOBUFS;
 657 }
 658
 659 /* netlink command implementations */
 660
 661 struct key_parse {
 662         struct key_params p;
 663         int idx;
 664         int type;
 665         bool def, defmgmt;
 666         bool def_uni, def_multi;
 667 };
 668
 669 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 670 {
 671         struct nlattr *tb[NL80211_KEY_MAX + 1];
 672         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 673                                    nl80211_key_policy);
 674         if (err)
 675                 return err;
 676
 677         k->def = !!tb[NL80211_KEY_DEFAULT];
 678         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 679
 680         if (k->def) {
 681                 k->def_uni = true;
 682                 k->def_multi = true;
 683         }
 684         if (k->defmgmt)
 685                 k->def_multi = true;
 686
 687         if (tb[NL80211_KEY_IDX])
 688                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 689
 690         if (tb[NL80211_KEY_DATA]) {
 691                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 692                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 693         }
 694
 695         if (tb[NL80211_KEY_SEQ]) {
 696                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 697                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 698         }
 699
 700         if (tb[NL80211_KEY_CIPHER])
 701                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 702
 703         if (tb[NL80211_KEY_TYPE]) {
 704                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 705                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 706                         return -EINVAL;
 707         }
 708
 709         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 710                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 711                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 712                                        tb[NL80211_KEY_DEFAULT_TYPES],
 713                                        nl80211_key_default_policy);
 714                 if (err)
 715                         return err;
 716
 717                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 718                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 719         }
 720
 721         return 0;
 722 }
 723
 724 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 725 {
 726         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 727                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 728                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 729         }
 730
 731         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 732                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 733                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 734         }
 735
 736         if (info->attrs[NL80211_ATTR_KEY_IDX])
 737                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 738
 739         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 740                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 741
 742         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 743         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 744
 745         if (k->def) {
 746                 k->def_uni = true;
 747                 k->def_multi = true;
 748         }
 749         if (k->defmgmt)
 750                 k->def_multi = true;
 751
 752         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 753                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 754                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 755                         return -EINVAL;
 756         }
 757
 758         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 759                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 760                 int err = nla_parse_nested(
 761                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 762                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 763                                 nl80211_key_default_policy);
 764                 if (err)
 765                         return err;
 766
 767                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 768                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 769         }
 770
 771         return 0;
 772 }
 773
 774 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 775 {
 776         int err;
 777
 778         memset(k, 0, sizeof(*k));
 779         k->idx = -1;
 780         k->type = -1;
 781
 782         if (info->attrs[NL80211_ATTR_KEY])
 783                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 784         else
 785                 err = nl80211_parse_key_old(info, k);
 786
 787         if (err)
 788                 return err;
 789
 790         if (k->def && k->defmgmt)
 791                 return -EINVAL;
 792
 793         if (k->defmgmt) {
 794                 if (k->def_uni || !k->def_multi)
 795                         return -EINVAL;
 796         }
 797
 798         if (k->idx != -1) {
 799                 if (k->defmgmt) {
 800                         if (k->idx < 4 || k->idx > 5)
 801                                 return -EINVAL;
 802                 } else if (k->def) {
 803                         if (k->idx < 0 || k->idx > 3)
 804                                 return -EINVAL;
 805                 } else {
 806                         if (k->idx < 0 || k->idx > 5)
 807                                 return -EINVAL;
 808                 }
 809         }
 810
 811         return 0;
 812 }
 813
 814 static struct cfg80211_cached_keys *
 815 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 816                        struct nlattr *keys, bool *no_ht)
 817 {
 818         struct key_parse parse;
 819         struct nlattr *key;
 820         struct cfg80211_cached_keys *result;
 821         int rem, err, def = 0;
 822
 823         result = kzalloc(sizeof(*result), GFP_KERNEL);
 824         if (!result)
 825                 return ERR_PTR(-ENOMEM);
 826
 827         result->def = -1;
 828         result->defmgmt = -1;
 829
 830         nla_for_each_nested(key, keys, rem) {
 831                 memset(&parse, 0, sizeof(parse));
 832                 parse.idx = -1;
 833
 834                 err = nl80211_parse_key_new(key, &parse);
 835                 if (err)
 836                         goto error;
 837                 err = -EINVAL;
 838                 if (!parse.p.key)
 839                         goto error;
 840                 if (parse.idx < 0 || parse.idx > 4)
 841                         goto error;
 842                 if (parse.def) {
 843                         if (def)
 844                                 goto error;
 845                         def = 1;
 846                         result->def = parse.idx;
 847                         if (!parse.def_uni || !parse.def_multi)
 848                                 goto error;
 849                 } else if (parse.defmgmt)
 850                         goto error;
 851                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 852                                                      parse.idx, false, NULL);
 853                 if (err)
 854                         goto error;
 855                 result->params[parse.idx].cipher = parse.p.cipher;
 856                 result->params[parse.idx].key_len = parse.p.key_len;
 857                 result->params[parse.idx].key = result->data[parse.idx];
 858                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 859
 860                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 861                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 862                         if (no_ht)
 863                                 *no_ht = true;
 864                 }
 865         }
 866
 867         return result;
 868  error:
 869         kfree(result);
 870         return ERR_PTR(err);
 871 }
 872
 873 static int nl80211_key_allowed(struct wireless_dev *wdev)
 874 {
 875         ASSERT_WDEV_LOCK(wdev);
 876
 877         switch (wdev->iftype) {
 878         case NL80211_IFTYPE_AP:
 879         case NL80211_IFTYPE_AP_VLAN:
 880         case NL80211_IFTYPE_P2P_GO:
 881         case NL80211_IFTYPE_MESH_POINT:
 882                 break;
 883         case NL80211_IFTYPE_ADHOC:
 884         case NL80211_IFTYPE_STATION:
 885         case NL80211_IFTYPE_P2P_CLIENT:
 886                 if (!wdev->current_bss)
 887                         return -ENOLINK;
 888                 break;
 889         case NL80211_IFTYPE_UNSPECIFIED:
 890         case NL80211_IFTYPE_OCB:
 891         case NL80211_IFTYPE_MONITOR:
 892         case NL80211_IFTYPE_P2P_DEVICE:
 893         case NL80211_IFTYPE_WDS:
 894         case NUM_NL80211_IFTYPES:
 895                 return -EINVAL;
 896         }
 897
 898         return 0;
 899 }
 900
 901 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 902                                                         struct nlattr *tb)
 903 {
 904         struct ieee80211_channel *chan;
 905
 906         if (tb == NULL)
 907                 return NULL;
 908         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 909         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 910                 return NULL;
 911         return chan;
 912 }
 913
 914 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 915 {
 916         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 917         int i;
 918
 919         if (!nl_modes)
 920                 goto nla_put_failure;
 921
 922         i = 0;
 923         while (ifmodes) {
 924                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 925                         goto nla_put_failure;
 926                 ifmodes >>= 1;
 927                 i++;
 928         }
 929
 930         nla_nest_end(msg, nl_modes);
 931         return 0;
 932
 933 nla_put_failure:
 934         return -ENOBUFS;
 935 }
 936
 937 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 938                                           struct sk_buff *msg,
 939                                           bool large)
 940 {
 941         struct nlattr *nl_combis;
 942         int i, j;
 943
 944         nl_combis = nla_nest_start(msg,
 945                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 946         if (!nl_combis)
 947                 goto nla_put_failure;
 948
 949         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 950                 const struct ieee80211_iface_combination *c;
 951                 struct nlattr *nl_combi, *nl_limits;
 952
 953                 c = &wiphy->iface_combinations[i];
 954
 955                 nl_combi = nla_nest_start(msg, i + 1);
 956                 if (!nl_combi)
 957                         goto nla_put_failure;
 958
 959                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 960                 if (!nl_limits)
 961                         goto nla_put_failure;
 962
 963                 for (j = 0; j < c->n_limits; j++) {
 964                         struct nlattr *nl_limit;
 965
 966                         nl_limit = nla_nest_start(msg, j + 1);
 967                         if (!nl_limit)
 968                                 goto nla_put_failure;
 969                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 970                                         c->limits[j].max))
 971                                 goto nla_put_failure;
 972                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 973                                                 c->limits[j].types))
 974                                 goto nla_put_failure;
 975                         nla_nest_end(msg, nl_limit);
 976                 }
 977
 978                 nla_nest_end(msg, nl_limits);
 979
 980                 if (c->beacon_int_infra_match &&
 981                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 982                         goto nla_put_failure;
 983                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 984                                 c->num_different_channels) ||
 985                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 986                                 c->max_interfaces))
 987                         goto nla_put_failure;
 988                 if (large &&
 989                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 990                                 c->radar_detect_widths) ||
 991                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 992                                 c->radar_detect_regions)))
 993                         goto nla_put_failure;
 994
 995                 nla_nest_end(msg, nl_combi);
 996         }
 997
 998         nla_nest_end(msg, nl_combis);
 999
1000         return 0;
1001 nla_put_failure:
1002         return -ENOBUFS;
1003 }
1004
1005 #ifdef CONFIG_PM
1006 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1007                                         struct sk_buff *msg)
1008 {
1009         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1010         struct nlattr *nl_tcp;
1011
1012         if (!tcp)
1013                 return 0;
1014
1015         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1016         if (!nl_tcp)
1017                 return -ENOBUFS;
1018
1019         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1020                         tcp->data_payload_max))
1021                 return -ENOBUFS;
1022
1023         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1024                         tcp->data_payload_max))
1025                 return -ENOBUFS;
1026
1027         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1028                 return -ENOBUFS;
1029
1030         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1031                                 sizeof(*tcp->tok), tcp->tok))
1032                 return -ENOBUFS;
1033
1034         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1035                         tcp->data_interval_max))
1036                 return -ENOBUFS;
1037
1038         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1039                         tcp->wake_payload_max))
1040                 return -ENOBUFS;
1041
1042         nla_nest_end(msg, nl_tcp);
1043         return 0;
1044 }
1045
1046 static int nl80211_send_wowlan(struct sk_buff *msg,
1047                                struct cfg80211_registered_device *rdev,
1048                                bool large)
1049 {
1050         struct nlattr *nl_wowlan;
1051
1052         if (!rdev->wiphy.wowlan)
1053                 return 0;
1054
1055         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1056         if (!nl_wowlan)
1057                 return -ENOBUFS;
1058
1059         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1060              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1061             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1062              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1063             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1064              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1065             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1066              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1067             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1068              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1069             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1070              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1071             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1072              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1073             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1074              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1075                 return -ENOBUFS;
1076
1077         if (rdev->wiphy.wowlan->n_patterns) {
1078                 struct nl80211_pattern_support pat = {
1079                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1080                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1081                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1082                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1083                 };
1084
1085                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1086                             sizeof(pat), &pat))
1087                         return -ENOBUFS;
1088         }
1089
1090         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1091                 return -ENOBUFS;
1092
1093         /* TODO: send wowlan net detect */
1094
1095         nla_nest_end(msg, nl_wowlan);
1096
1097         return 0;
1098 }
1099 #endif
1100
1101 static int nl80211_send_coalesce(struct sk_buff *msg,
1102                                  struct cfg80211_registered_device *rdev)
1103 {
1104         struct nl80211_coalesce_rule_support rule;
1105
1106         if (!rdev->wiphy.coalesce)
1107                 return 0;
1108
1109         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1110         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1111         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1112         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1113         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1114         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1115
1116         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1117                 return -ENOBUFS;
1118
1119         return 0;
1120 }
1121
1122 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1123                                       struct ieee80211_supported_band *sband)
1124 {
1125         struct nlattr *nl_rates, *nl_rate;
1126         struct ieee80211_rate *rate;
1127         int i;
1128
1129         /* add HT info */
1130         if (sband->ht_cap.ht_supported &&
1131             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1132                      sizeof(sband->ht_cap.mcs),
1133                      &sband->ht_cap.mcs) ||
1134              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1135                          sband->ht_cap.cap) ||
1136              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1137                         sband->ht_cap.ampdu_factor) ||
1138              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1139                         sband->ht_cap.ampdu_density)))
1140                 return -ENOBUFS;
1141
1142         /* add VHT info */
1143         if (sband->vht_cap.vht_supported &&
1144             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1145                      sizeof(sband->vht_cap.vht_mcs),
1146                      &sband->vht_cap.vht_mcs) ||
1147              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1148                          sband->vht_cap.cap)))
1149                 return -ENOBUFS;
1150
1151         /* add bitrates */
1152         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1153         if (!nl_rates)
1154                 return -ENOBUFS;
1155
1156         for (i = 0; i < sband->n_bitrates; i++) {
1157                 nl_rate = nla_nest_start(msg, i);
1158                 if (!nl_rate)
1159                         return -ENOBUFS;
1160
1161                 rate = &sband->bitrates[i];
1162                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1163                                 rate->bitrate))
1164                         return -ENOBUFS;
1165                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1166                     nla_put_flag(msg,
1167                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1168                         return -ENOBUFS;
1169
1170                 nla_nest_end(msg, nl_rate);
1171         }
1172
1173         nla_nest_end(msg, nl_rates);
1174
1175         return 0;
1176 }
1177
1178 static int
1179 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1180                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1181 {
1182         u16 stypes;
1183         struct nlattr *nl_ftypes, *nl_ifs;
1184         enum nl80211_iftype ift;
1185         int i;
1186
1187         if (!mgmt_stypes)
1188                 return 0;
1189
1190         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1191         if (!nl_ifs)
1192                 return -ENOBUFS;
1193
1194         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1195                 nl_ftypes = nla_nest_start(msg, ift);
1196                 if (!nl_ftypes)
1197                         return -ENOBUFS;
1198                 i = 0;
1199                 stypes = mgmt_stypes[ift].tx;
1200                 while (stypes) {
1201                         if ((stypes & 1) &&
1202                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1203                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1204                                 return -ENOBUFS;
1205                         stypes >>= 1;
1206                         i++;
1207                 }
1208                 nla_nest_end(msg, nl_ftypes);
1209         }
1210
1211         nla_nest_end(msg, nl_ifs);
1212
1213         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1214         if (!nl_ifs)
1215                 return -ENOBUFS;
1216
1217         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1218                 nl_ftypes = nla_nest_start(msg, ift);
1219                 if (!nl_ftypes)
1220                         return -ENOBUFS;
1221                 i = 0;
1222                 stypes = mgmt_stypes[ift].rx;
1223                 while (stypes) {
1224                         if ((stypes & 1) &&
1225                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1226                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1227                                 return -ENOBUFS;
1228                         stypes >>= 1;
1229                         i++;
1230                 }
1231                 nla_nest_end(msg, nl_ftypes);
1232         }
1233         nla_nest_end(msg, nl_ifs);
1234
1235         return 0;
1236 }
1237
1238 struct nl80211_dump_wiphy_state {
1239         s64 filter_wiphy;
1240         long start;
1241         long split_start, band_start, chan_start;
1242         bool split;
1243 };
1244
1245 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1246                               enum nl80211_commands cmd,
1247                               struct sk_buff *msg, u32 portid, u32 seq,
1248                               int flags, struct nl80211_dump_wiphy_state *state)
1249 {
1250         void *hdr;
1251         struct nlattr *nl_bands, *nl_band;
1252         struct nlattr *nl_freqs, *nl_freq;
1253         struct nlattr *nl_cmds;
1254         enum ieee80211_band band;
1255         struct ieee80211_channel *chan;
1256         int i;
1257         const struct ieee80211_txrx_stypes *mgmt_stypes =
1258                                 rdev->wiphy.mgmt_stypes;
1259         u32 features;
1260
1261         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1262         if (!hdr)
1263                 return -ENOBUFS;
1264
1265         if (WARN_ON(!state))
1266                 return -EINVAL;
1267
1268         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1269             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1270                            wiphy_name(&rdev->wiphy)) ||
1271             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1272                         cfg80211_rdev_list_generation))
1273                 goto nla_put_failure;
1274
1275         if (cmd != NL80211_CMD_NEW_WIPHY)
1276                 goto finish;
1277
1278         switch (state->split_start) {
1279         case 0:
1280                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1281                                rdev->wiphy.retry_short) ||
1282                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1283                                rdev->wiphy.retry_long) ||
1284                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1285                                 rdev->wiphy.frag_threshold) ||
1286                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1287                                 rdev->wiphy.rts_threshold) ||
1288                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1289                                rdev->wiphy.coverage_class) ||
1290                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1291                                rdev->wiphy.max_scan_ssids) ||
1292                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1293                                rdev->wiphy.max_sched_scan_ssids) ||
1294                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1295                                 rdev->wiphy.max_scan_ie_len) ||
1296                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1297                                 rdev->wiphy.max_sched_scan_ie_len) ||
1298                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1299                                rdev->wiphy.max_match_sets))
1300                         goto nla_put_failure;
1301
1302                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1303                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1304                         goto nla_put_failure;
1305                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1306                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1307                         goto nla_put_failure;
1308                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1309                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1310                         goto nla_put_failure;
1311                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1312                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1313                         goto nla_put_failure;
1314                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1315                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1316                         goto nla_put_failure;
1317                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1318                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1319                         goto nla_put_failure;
1320                 state->split_start++;
1321                 if (state->split)
1322                         break;
1323         case 1:
1324                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1325                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1326                             rdev->wiphy.cipher_suites))
1327                         goto nla_put_failure;
1328
1329                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1330                                rdev->wiphy.max_num_pmkids))
1331                         goto nla_put_failure;
1332
1333                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1334                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1335                         goto nla_put_failure;
1336
1337                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1338                                 rdev->wiphy.available_antennas_tx) ||
1339                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1340                                 rdev->wiphy.available_antennas_rx))
1341                         goto nla_put_failure;
1342
1343                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1344                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1345                                 rdev->wiphy.probe_resp_offload))
1346                         goto nla_put_failure;
1347
1348                 if ((rdev->wiphy.available_antennas_tx ||
1349                      rdev->wiphy.available_antennas_rx) &&
1350                     rdev->ops->get_antenna) {
1351                         u32 tx_ant = 0, rx_ant = 0;
1352                         int res;
1353                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1354                         if (!res) {
1355                                 if (nla_put_u32(msg,
1356                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1357                                                 tx_ant) ||
1358                                     nla_put_u32(msg,
1359                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1360                                                 rx_ant))
1361                                         goto nla_put_failure;
1362                         }
1363                 }
1364
1365                 state->split_start++;
1366                 if (state->split)
1367                         break;
1368         case 2:
1369                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1370                                         rdev->wiphy.interface_modes))
1371                                 goto nla_put_failure;
1372                 state->split_start++;
1373                 if (state->split)
1374                         break;
1375         case 3:
1376                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1377                 if (!nl_bands)
1378                         goto nla_put_failure;
1379
1380                 for (band = state->band_start;
1381                      band < IEEE80211_NUM_BANDS; band++) {
1382                         struct ieee80211_supported_band *sband;
1383
1384                         sband = rdev->wiphy.bands[band];
1385
1386                         if (!sband)
1387                                 continue;
1388
1389                         nl_band = nla_nest_start(msg, band);
1390                         if (!nl_band)
1391                                 goto nla_put_failure;
1392
1393                         switch (state->chan_start) {
1394                         case 0:
1395                                 if (nl80211_send_band_rateinfo(msg, sband))
1396                                         goto nla_put_failure;
1397                                 state->chan_start++;
1398                                 if (state->split)
1399                                         break;
1400                         default:
1401                                 /* add frequencies */
1402                                 nl_freqs = nla_nest_start(
1403                                         msg, NL80211_BAND_ATTR_FREQS);
1404                                 if (!nl_freqs)
1405                                         goto nla_put_failure;
1406
1407                                 for (i = state->chan_start - 1;
1408                                      i < sband->n_channels;
1409                                      i++) {
1410                                         nl_freq = nla_nest_start(msg, i);
1411                                         if (!nl_freq)
1412                                                 goto nla_put_failure;
1413
1414                                         chan = &sband->channels[i];
1415
1416                                         if (nl80211_msg_put_channel(
1417                                                         msg, chan,
1418                                                         state->split))
1419                                                 goto nla_put_failure;
1420
1421                                         nla_nest_end(msg, nl_freq);
1422                                         if (state->split)
1423                                                 break;
1424                                 }
1425                                 if (i < sband->n_channels)
1426                                         state->chan_start = i + 2;
1427                                 else
1428                                         state->chan_start = 0;
1429                                 nla_nest_end(msg, nl_freqs);
1430                         }
1431
1432                         nla_nest_end(msg, nl_band);
1433
1434                         if (state->split) {
1435                                 /* start again here */
1436                                 if (state->chan_start)
1437                                         band--;
1438                                 break;
1439                         }
1440                 }
1441                 nla_nest_end(msg, nl_bands);
1442
1443                 if (band < IEEE80211_NUM_BANDS)
1444                         state->band_start = band + 1;
1445                 else
1446                         state->band_start = 0;
1447
1448                 /* if bands & channels are done, continue outside */
1449                 if (state->band_start == 0 && state->chan_start == 0)
1450                         state->split_start++;
1451                 if (state->split)
1452                         break;
1453         case 4:
1454                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1455                 if (!nl_cmds)
1456                         goto nla_put_failure;
1457
1458                 i = 0;
1459 #define CMD(op, n)                                                      \
1460                  do {                                                   \
1461                         if (rdev->ops->op) {                            \
1462                                 i++;                                    \
1463                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1464                                         goto nla_put_failure;           \
1465                         }                                               \
1466                 } while (0)
1467
1468                 CMD(add_virtual_intf, NEW_INTERFACE);
1469                 CMD(change_virtual_intf, SET_INTERFACE);
1470                 CMD(add_key, NEW_KEY);
1471                 CMD(start_ap, START_AP);
1472                 CMD(add_station, NEW_STATION);
1473                 CMD(add_mpath, NEW_MPATH);
1474                 CMD(update_mesh_config, SET_MESH_CONFIG);
1475                 CMD(change_bss, SET_BSS);
1476                 CMD(auth, AUTHENTICATE);
1477                 CMD(assoc, ASSOCIATE);
1478                 CMD(deauth, DEAUTHENTICATE);
1479                 CMD(disassoc, DISASSOCIATE);
1480                 CMD(join_ibss, JOIN_IBSS);
1481                 CMD(join_mesh, JOIN_MESH);
1482                 CMD(set_pmksa, SET_PMKSA);
1483                 CMD(del_pmksa, DEL_PMKSA);
1484                 CMD(flush_pmksa, FLUSH_PMKSA);
1485                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1486                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1487                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1488                 CMD(mgmt_tx, FRAME);
1489                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1490                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1491                         i++;
1492                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1493                                 goto nla_put_failure;
1494                 }
1495                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1496                     rdev->ops->join_mesh) {
1497                         i++;
1498                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1499                                 goto nla_put_failure;
1500                 }
1501                 CMD(set_wds_peer, SET_WDS_PEER);
1502                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1503                         CMD(tdls_mgmt, TDLS_MGMT);
1504                         CMD(tdls_oper, TDLS_OPER);
1505                 }
1506                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1507                         CMD(sched_scan_start, START_SCHED_SCAN);
1508                 CMD(probe_client, PROBE_CLIENT);
1509                 CMD(set_noack_map, SET_NOACK_MAP);
1510                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1511                         i++;
1512                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1513                                 goto nla_put_failure;
1514                 }
1515                 CMD(start_p2p_device, START_P2P_DEVICE);
1516                 CMD(set_mcast_rate, SET_MCAST_RATE);
1517 #ifdef CONFIG_NL80211_TESTMODE
1518                 CMD(testmode_cmd, TESTMODE);
1519 #endif
1520                 if (state->split) {
1521                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1522                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1523                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1524                                 CMD(channel_switch, CHANNEL_SWITCH);
1525                         CMD(set_qos_map, SET_QOS_MAP);
1526                         if (rdev->wiphy.features &
1527                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1528                                 CMD(add_tx_ts, ADD_TX_TS);
1529                 }
1530                 /* add into the if now */
1531 #undef CMD
1532
1533                 if (rdev->ops->connect || rdev->ops->auth) {
1534                         i++;
1535                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1536                                 goto nla_put_failure;
1537                 }
1538
1539                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1540                         i++;
1541                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1542                                 goto nla_put_failure;
1543                 }
1544
1545                 nla_nest_end(msg, nl_cmds);
1546                 state->split_start++;
1547                 if (state->split)
1548                         break;
1549         case 5:
1550                 if (rdev->ops->remain_on_channel &&
1551                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1552                     nla_put_u32(msg,
1553                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1554                                 rdev->wiphy.max_remain_on_channel_duration))
1555                         goto nla_put_failure;
1556
1557                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1558                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1559                         goto nla_put_failure;
1560
1561                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1562                         goto nla_put_failure;
1563                 state->split_start++;
1564                 if (state->split)
1565                         break;
1566         case 6:
1567 #ifdef CONFIG_PM
1568                 if (nl80211_send_wowlan(msg, rdev, state->split))
1569                         goto nla_put_failure;
1570                 state->split_start++;
1571                 if (state->split)
1572                         break;
1573 #else
1574                 state->split_start++;
1575 #endif
1576         case 7:
1577                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1578                                         rdev->wiphy.software_iftypes))
1579                         goto nla_put_failure;
1580
1581                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1582                                                    state->split))
1583                         goto nla_put_failure;
1584
1585                 state->split_start++;
1586                 if (state->split)
1587                         break;
1588         case 8:
1589                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1590                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1591                                 rdev->wiphy.ap_sme_capa))
1592                         goto nla_put_failure;
1593
1594                 features = rdev->wiphy.features;
1595                 /*
1596                  * We can only add the per-channel limit information if the
1597                  * dump is split, otherwise it makes it too big. Therefore
1598                  * only advertise it in that case.
1599                  */
1600                 if (state->split)
1601                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1602                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1603                         goto nla_put_failure;
1604
1605                 if (rdev->wiphy.ht_capa_mod_mask &&
1606                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1607                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1608                             rdev->wiphy.ht_capa_mod_mask))
1609                         goto nla_put_failure;
1610
1611                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1612                     rdev->wiphy.max_acl_mac_addrs &&
1613                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1614                                 rdev->wiphy.max_acl_mac_addrs))
1615                         goto nla_put_failure;
1616
1617                 /*
1618                  * Any information below this point is only available to
1619                  * applications that can deal with it being split. This
1620                  * helps ensure that newly added capabilities don't break
1621                  * older tools by overrunning their buffers.
1622                  *
1623                  * We still increment split_start so that in the split
1624                  * case we'll continue with more data in the next round,
1625                  * but break unconditionally so unsplit data stops here.
1626                  */
1627                 state->split_start++;
1628                 break;
1629         case 9:
1630                 if (rdev->wiphy.extended_capabilities &&
1631                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1632                              rdev->wiphy.extended_capabilities_len,
1633                              rdev->wiphy.extended_capabilities) ||
1634                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1635                              rdev->wiphy.extended_capabilities_len,
1636                              rdev->wiphy.extended_capabilities_mask)))
1637                         goto nla_put_failure;
1638
1639                 if (rdev->wiphy.vht_capa_mod_mask &&
1640                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1641                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1642                             rdev->wiphy.vht_capa_mod_mask))
1643                         goto nla_put_failure;
1644
1645                 state->split_start++;
1646                 break;
1647         case 10:
1648                 if (nl80211_send_coalesce(msg, rdev))
1649                         goto nla_put_failure;
1650
1651                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1652                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1653                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1654                         goto nla_put_failure;
1655
1656                 if (rdev->wiphy.max_ap_assoc_sta &&
1657                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1658                                 rdev->wiphy.max_ap_assoc_sta))
1659                         goto nla_put_failure;
1660
1661                 state->split_start++;
1662                 break;
1663         case 11:
1664                 if (rdev->wiphy.n_vendor_commands) {
1665                         const struct nl80211_vendor_cmd_info *info;
1666                         struct nlattr *nested;
1667
1668                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1669                         if (!nested)
1670                                 goto nla_put_failure;
1671
1672                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1673                                 info = &rdev->wiphy.vendor_commands[i].info;
1674                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1675                                         goto nla_put_failure;
1676                         }
1677                         nla_nest_end(msg, nested);
1678                 }
1679
1680                 if (rdev->wiphy.n_vendor_events) {
1681                         const struct nl80211_vendor_cmd_info *info;
1682                         struct nlattr *nested;
1683
1684                         nested = nla_nest_start(msg,
1685                                                 NL80211_ATTR_VENDOR_EVENTS);
1686                         if (!nested)
1687                                 goto nla_put_failure;
1688
1689                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1690                                 info = &rdev->wiphy.vendor_events[i];
1691                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1692                                         goto nla_put_failure;
1693                         }
1694                         nla_nest_end(msg, nested);
1695                 }
1696                 state->split_start++;
1697                 break;
1698         case 12:
1699                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1700                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1701                                rdev->wiphy.max_num_csa_counters))
1702                         goto nla_put_failure;
1703
1704                 /* done */
1705                 state->split_start = 0;
1706                 break;
1707         }
1708  finish:
1709         return genlmsg_end(msg, hdr);
1710
1711  nla_put_failure:
1712         genlmsg_cancel(msg, hdr);
1713         return -EMSGSIZE;
1714 }
1715
1716 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1717                                     struct netlink_callback *cb,
1718                                     struct nl80211_dump_wiphy_state *state)
1719 {
1720         struct nlattr **tb = nl80211_fam.attrbuf;
1721         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1722                               tb, nl80211_fam.maxattr, nl80211_policy);
1723         /* ignore parse errors for backward compatibility */
1724         if (ret)
1725                 return 0;
1726
1727         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1728         if (tb[NL80211_ATTR_WIPHY])
1729                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1730         if (tb[NL80211_ATTR_WDEV])
1731                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1732         if (tb[NL80211_ATTR_IFINDEX]) {
1733                 struct net_device *netdev;
1734                 struct cfg80211_registered_device *rdev;
1735                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1736
1737                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1738                 if (!netdev)
1739                         return -ENODEV;
1740                 if (netdev->ieee80211_ptr) {
1741                         rdev = wiphy_to_rdev(
1742                                 netdev->ieee80211_ptr->wiphy);
1743                         state->filter_wiphy = rdev->wiphy_idx;
1744                 }
1745         }
1746
1747         return 0;
1748 }
1749
1750 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1751 {
1752         int idx = 0, ret;
1753         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1754         struct cfg80211_registered_device *rdev;
1755
1756         rtnl_lock();
1757         if (!state) {
1758                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1759                 if (!state) {
1760                         rtnl_unlock();
1761                         return -ENOMEM;
1762                 }
1763                 state->filter_wiphy = -1;
1764                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1765                 if (ret) {
1766                         kfree(state);
1767                         rtnl_unlock();
1768                         return ret;
1769                 }
1770                 cb->args[0] = (long)state;
1771         }
1772
1773         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1774                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1775                         continue;
1776                 if (++idx <= state->start)
1777                         continue;
1778                 if (state->filter_wiphy != -1 &&
1779                     state->filter_wiphy != rdev->wiphy_idx)
1780                         continue;
1781                 /* attempt to fit multiple wiphy data chunks into the skb */
1782                 do {
1783                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1784                                                  skb,
1785                                                  NETLINK_CB(cb->skb).portid,
1786                                                  cb->nlh->nlmsg_seq,
1787                                                  NLM_F_MULTI, state);
1788                         if (ret < 0) {
1789                                 /*
1790                                  * If sending the wiphy data didn't fit (ENOBUFS
1791                                  * or EMSGSIZE returned), this SKB is still
1792                                  * empty (so it's not too big because another
1793                                  * wiphy dataset is already in the skb) and
1794                                  * we've not tried to adjust the dump allocation
1795                                  * yet ... then adjust the alloc size to be
1796                                  * bigger, and return 1 but with the empty skb.
1797                                  * This results in an empty message being RX'ed
1798                                  * in userspace, but that is ignored.
1799                                  *
1800                                  * We can then retry with the larger buffer.
1801                                  */
1802                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1803                                     !skb->len && !state->split &&
1804                                     cb->min_dump_alloc < 4096) {
1805                                         cb->min_dump_alloc = 4096;
1806                                         state->split_start = 0;
1807                                         rtnl_unlock();
1808                                         return 1;
1809                                 }
1810                                 idx--;
1811                                 break;
1812                         }
1813                 } while (state->split_start > 0);
1814                 break;
1815         }
1816         rtnl_unlock();
1817
1818         state->start = idx;
1819
1820         return skb->len;
1821 }
1822
1823 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1824 {
1825         kfree((void *)cb->args[0]);
1826         return 0;
1827 }
1828
1829 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1830 {
1831         struct sk_buff *msg;
1832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1833         struct nl80211_dump_wiphy_state state = {};
1834
1835         msg = nlmsg_new(4096, GFP_KERNEL);
1836         if (!msg)
1837                 return -ENOMEM;
1838
1839         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1840                                info->snd_portid, info->snd_seq, 0,
1841                                &state) < 0) {
1842                 nlmsg_free(msg);
1843                 return -ENOBUFS;
1844         }
1845
1846         return genlmsg_reply(msg, info);
1847 }
1848
1849 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1850         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1851         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1852         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1853         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1854         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1855 };
1856
1857 static int parse_txq_params(struct nlattr *tb[],
1858                             struct ieee80211_txq_params *txq_params)
1859 {
1860         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1861             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1862             !tb[NL80211_TXQ_ATTR_AIFS])
1863                 return -EINVAL;
1864
1865         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1866         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1867         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1868         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1869         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1870
1871         if (txq_params->ac >= NL80211_NUM_ACS)
1872                 return -EINVAL;
1873
1874         return 0;
1875 }
1876
1877 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1878 {
1879         /*
1880          * You can only set the channel explicitly for WDS interfaces,
1881          * all others have their channel managed via their respective
1882          * "establish a connection" command (connect, join, ...)
1883          *
1884          * For AP/GO and mesh mode, the channel can be set with the
1885          * channel userspace API, but is only stored and passed to the
1886          * low-level driver when the AP starts or the mesh is joined.
1887          * This is for backward compatibility, userspace can also give
1888          * the channel in the start-ap or join-mesh commands instead.
1889          *
1890          * Monitors are special as they are normally slaved to
1891          * whatever else is going on, so they have their own special
1892          * operation to set the monitor channel if possible.
1893          */
1894         return !wdev ||
1895                 wdev->iftype == NL80211_IFTYPE_AP ||
1896                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1897                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1898                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1899 }
1900
1901 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1902                                  struct genl_info *info,
1903                                  struct cfg80211_chan_def *chandef)
1904 {
1905         u32 control_freq;
1906
1907         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1908                 return -EINVAL;
1909
1910         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1911
1912         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1913         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1914         chandef->center_freq1 = control_freq;
1915         chandef->center_freq2 = 0;
1916
1917         /* Primary channel not allowed */
1918         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1919                 return -EINVAL;
1920
1921         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1922                 enum nl80211_channel_type chantype;
1923
1924                 chantype = nla_get_u32(
1925                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1926
1927                 switch (chantype) {
1928                 case NL80211_CHAN_NO_HT:
1929                 case NL80211_CHAN_HT20:
1930                 case NL80211_CHAN_HT40PLUS:
1931                 case NL80211_CHAN_HT40MINUS:
1932                         cfg80211_chandef_create(chandef, chandef->chan,
1933                                                 chantype);
1934                         break;
1935                 default:
1936                         return -EINVAL;
1937                 }
1938         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1939                 chandef->width =
1940                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1941                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1942                         chandef->center_freq1 =
1943                                 nla_get_u32(
1944                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1945                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1946                         chandef->center_freq2 =
1947                                 nla_get_u32(
1948                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1949         }
1950
1951         if (!cfg80211_chandef_valid(chandef))
1952                 return -EINVAL;
1953
1954         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1955                                      IEEE80211_CHAN_DISABLED))
1956                 return -EINVAL;
1957
1958         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1959              chandef->width == NL80211_CHAN_WIDTH_10) &&
1960             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1961                 return -EINVAL;
1962
1963         return 0;
1964 }
1965
1966 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1967                                  struct net_device *dev,
1968                                  struct genl_info *info)
1969 {
1970         struct cfg80211_chan_def chandef;
1971         int result;
1972         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1973         struct wireless_dev *wdev = NULL;
1974
1975         if (dev)
1976                 wdev = dev->ieee80211_ptr;
1977         if (!nl80211_can_set_dev_channel(wdev))
1978                 return -EOPNOTSUPP;
1979         if (wdev)
1980                 iftype = wdev->iftype;
1981
1982         result = nl80211_parse_chandef(rdev, info, &chandef);
1983         if (result)
1984                 return result;
1985
1986         switch (iftype) {
1987         case NL80211_IFTYPE_AP:
1988         case NL80211_IFTYPE_P2P_GO:
1989                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1990                         result = -EINVAL;
1991                         break;
1992                 }
1993                 if (wdev->beacon_interval) {
1994                         if (!dev || !rdev->ops->set_ap_chanwidth ||
1995                             !(rdev->wiphy.features &
1996                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1997                                 result = -EBUSY;
1998                                 break;
1999                         }
2000
2001                         /* Only allow dynamic channel width changes */
2002                         if (chandef.chan != wdev->preset_chandef.chan) {
2003                                 result = -EBUSY;
2004                                 break;
2005                         }
2006                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2007                         if (result)
2008                                 break;
2009                 }
2010                 wdev->preset_chandef = chandef;
2011                 result = 0;
2012                 break;
2013         case NL80211_IFTYPE_MESH_POINT:
2014                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2015                 break;
2016         case NL80211_IFTYPE_MONITOR:
2017                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2018                 break;
2019         default:
2020                 result = -EINVAL;
2021         }
2022
2023         return result;
2024 }
2025
2026 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2027 {
2028         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2029         struct net_device *netdev = info->user_ptr[1];
2030
2031         return __nl80211_set_channel(rdev, netdev, info);
2032 }
2033
2034 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2035 {
2036         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2037         struct net_device *dev = info->user_ptr[1];
2038         struct wireless_dev *wdev = dev->ieee80211_ptr;
2039         const u8 *bssid;
2040
2041         if (!info->attrs[NL80211_ATTR_MAC])
2042                 return -EINVAL;
2043
2044         if (netif_running(dev))
2045                 return -EBUSY;
2046
2047         if (!rdev->ops->set_wds_peer)
2048                 return -EOPNOTSUPP;
2049
2050         if (wdev->iftype != NL80211_IFTYPE_WDS)
2051                 return -EOPNOTSUPP;
2052
2053         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2054         return rdev_set_wds_peer(rdev, dev, bssid);
2055 }
2056
2057
2058 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2059 {
2060         struct cfg80211_registered_device *rdev;
2061         struct net_device *netdev = NULL;
2062         struct wireless_dev *wdev;
2063         int result = 0, rem_txq_params = 0;
2064         struct nlattr *nl_txq_params;
2065         u32 changed;
2066         u8 retry_short = 0, retry_long = 0;
2067         u32 frag_threshold = 0, rts_threshold = 0;
2068         u8 coverage_class = 0;
2069
2070         ASSERT_RTNL();
2071
2072         /*
2073          * Try to find the wiphy and netdev. Normally this
2074          * function shouldn't need the netdev, but this is
2075          * done for backward compatibility -- previously
2076          * setting the channel was done per wiphy, but now
2077          * it is per netdev. Previous userland like hostapd
2078          * also passed a netdev to set_wiphy, so that it is
2079          * possible to let that go to the right netdev!
2080          */
2081
2082         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2083                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2084
2085                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2086                 if (netdev && netdev->ieee80211_ptr)
2087                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2088                 else
2089                         netdev = NULL;
2090         }
2091
2092         if (!netdev) {
2093                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2094                                                   info->attrs);
2095                 if (IS_ERR(rdev))
2096                         return PTR_ERR(rdev);
2097                 wdev = NULL;
2098                 netdev = NULL;
2099                 result = 0;
2100         } else
2101                 wdev = netdev->ieee80211_ptr;
2102
2103         /*
2104          * end workaround code, by now the rdev is available
2105          * and locked, and wdev may or may not be NULL.
2106          */
2107
2108         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2109                 result = cfg80211_dev_rename(
2110                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2111
2112         if (result)
2113                 return result;
2114
2115         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2116                 struct ieee80211_txq_params txq_params;
2117                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2118
2119                 if (!rdev->ops->set_txq_params)
2120                         return -EOPNOTSUPP;
2121
2122                 if (!netdev)
2123                         return -EINVAL;
2124
2125                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2126                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2127                         return -EINVAL;
2128
2129                 if (!netif_running(netdev))
2130                         return -ENETDOWN;
2131
2132                 nla_for_each_nested(nl_txq_params,
2133                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2134                                     rem_txq_params) {
2135                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2136                                            nla_data(nl_txq_params),
2137                                            nla_len(nl_txq_params),
2138                                            txq_params_policy);
2139                         if (result)
2140                                 return result;
2141                         result = parse_txq_params(tb, &txq_params);
2142                         if (result)
2143                                 return result;
2144
2145                         result = rdev_set_txq_params(rdev, netdev,
2146                                                      &txq_params);
2147                         if (result)
2148                                 return result;
2149                 }
2150         }
2151
2152         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2153                 result = __nl80211_set_channel(
2154                         rdev,
2155                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2156                         info);
2157                 if (result)
2158                         return result;
2159         }
2160
2161         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2162                 struct wireless_dev *txp_wdev = wdev;
2163                 enum nl80211_tx_power_setting type;
2164                 int idx, mbm = 0;
2165
2166                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2167                         txp_wdev = NULL;
2168
2169                 if (!rdev->ops->set_tx_power)
2170                         return -EOPNOTSUPP;
2171
2172                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2173                 type = nla_get_u32(info->attrs[idx]);
2174
2175                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2176                     (type != NL80211_TX_POWER_AUTOMATIC))
2177                         return -EINVAL;
2178
2179                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2180                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2181                         mbm = nla_get_u32(info->attrs[idx]);
2182                 }
2183
2184                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2185                 if (result)
2186                         return result;
2187         }
2188
2189         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2190             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2191                 u32 tx_ant, rx_ant;
2192                 if ((!rdev->wiphy.available_antennas_tx &&
2193                      !rdev->wiphy.available_antennas_rx) ||
2194                     !rdev->ops->set_antenna)
2195                         return -EOPNOTSUPP;
2196
2197                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2198                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2199
2200                 /* reject antenna configurations which don't match the
2201                  * available antenna masks, except for the "all" mask */
2202                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2203                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2204                         return -EINVAL;
2205
2206                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2207                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2208
2209                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2210                 if (result)
2211                         return result;
2212         }
2213
2214         changed = 0;
2215
2216         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2217                 retry_short = nla_get_u8(
2218                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2219                 if (retry_short == 0)
2220                         return -EINVAL;
2221
2222                 changed |= WIPHY_PARAM_RETRY_SHORT;
2223         }
2224
2225         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2226                 retry_long = nla_get_u8(
2227                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2228                 if (retry_long == 0)
2229                         return -EINVAL;
2230
2231                 changed |= WIPHY_PARAM_RETRY_LONG;
2232         }
2233
2234         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2235                 frag_threshold = nla_get_u32(
2236                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2237                 if (frag_threshold < 256)
2238                         return -EINVAL;
2239
2240                 if (frag_threshold != (u32) -1) {
2241                         /*
2242                          * Fragments (apart from the last one) are required to
2243                          * have even length. Make the fragmentation code
2244                          * simpler by stripping LSB should someone try to use
2245                          * odd threshold value.
2246                          */
2247                         frag_threshold &= ~0x1;
2248                 }
2249                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2250         }
2251
2252         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2253                 rts_threshold = nla_get_u32(
2254                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2255                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2256         }
2257
2258         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2259                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2260                         return -EINVAL;
2261
2262                 coverage_class = nla_get_u8(
2263                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2264                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2265         }
2266
2267         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2268                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2269                         return -EOPNOTSUPP;
2270
2271                 changed |= WIPHY_PARAM_DYN_ACK;
2272         }
2273
2274         if (changed) {
2275                 u8 old_retry_short, old_retry_long;
2276                 u32 old_frag_threshold, old_rts_threshold;
2277                 u8 old_coverage_class;
2278
2279                 if (!rdev->ops->set_wiphy_params)
2280                         return -EOPNOTSUPP;
2281
2282                 old_retry_short = rdev->wiphy.retry_short;
2283                 old_retry_long = rdev->wiphy.retry_long;
2284                 old_frag_threshold = rdev->wiphy.frag_threshold;
2285                 old_rts_threshold = rdev->wiphy.rts_threshold;
2286                 old_coverage_class = rdev->wiphy.coverage_class;
2287
2288                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2289                         rdev->wiphy.retry_short = retry_short;
2290                 if (changed & WIPHY_PARAM_RETRY_LONG)
2291                         rdev->wiphy.retry_long = retry_long;
2292                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2293                         rdev->wiphy.frag_threshold = frag_threshold;
2294                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2295                         rdev->wiphy.rts_threshold = rts_threshold;
2296                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2297                         rdev->wiphy.coverage_class = coverage_class;
2298
2299                 result = rdev_set_wiphy_params(rdev, changed);
2300                 if (result) {
2301                         rdev->wiphy.retry_short = old_retry_short;
2302                         rdev->wiphy.retry_long = old_retry_long;
2303                         rdev->wiphy.frag_threshold = old_frag_threshold;
2304                         rdev->wiphy.rts_threshold = old_rts_threshold;
2305                         rdev->wiphy.coverage_class = old_coverage_class;
2306                 }
2307         }
2308         return 0;
2309 }
2310
2311 static inline u64 wdev_id(struct wireless_dev *wdev)
2312 {
2313         return (u64)wdev->identifier |
2314                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2315 }
2316
2317 static int nl80211_send_chandef(struct sk_buff *msg,
2318                                 const struct cfg80211_chan_def *chandef)
2319 {
2320         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2321                 return -EINVAL;
2322
2323         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2324                         chandef->chan->center_freq))
2325                 return -ENOBUFS;
2326         switch (chandef->width) {
2327         case NL80211_CHAN_WIDTH_20_NOHT:
2328         case NL80211_CHAN_WIDTH_20:
2329         case NL80211_CHAN_WIDTH_40:
2330                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2331                                 cfg80211_get_chandef_type(chandef)))
2332                         return -ENOBUFS;
2333                 break;
2334         default:
2335                 break;
2336         }
2337         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2338                 return -ENOBUFS;
2339         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2340                 return -ENOBUFS;
2341         if (chandef->center_freq2 &&
2342             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2343                 return -ENOBUFS;
2344         return 0;
2345 }
2346
2347 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2348                               struct cfg80211_registered_device *rdev,
2349                               struct wireless_dev *wdev, bool removal)
2350 {
2351         struct net_device *dev = wdev->netdev;
2352         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2353         void *hdr;
2354
2355         if (removal)
2356                 cmd = NL80211_CMD_DEL_INTERFACE;
2357
2358         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2359         if (!hdr)
2360                 return -1;
2361
2362         if (dev &&
2363             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2364              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2365                 goto nla_put_failure;
2366
2367         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2368             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2369             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2370             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2371             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2372                         rdev->devlist_generation ^
2373                         (cfg80211_rdev_list_generation << 2)))
2374                 goto nla_put_failure;
2375
2376         if (rdev->ops->get_channel) {
2377                 int ret;
2378                 struct cfg80211_chan_def chandef;
2379
2380                 ret = rdev_get_channel(rdev, wdev, &chandef);
2381                 if (ret == 0) {
2382                         if (nl80211_send_chandef(msg, &chandef))
2383                                 goto nla_put_failure;
2384                 }
2385         }
2386
2387         if (wdev->ssid_len) {
2388                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2389                         goto nla_put_failure;
2390         }
2391
2392         return genlmsg_end(msg, hdr);
2393
2394  nla_put_failure:
2395         genlmsg_cancel(msg, hdr);
2396         return -EMSGSIZE;
2397 }
2398
2399 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2400 {
2401         int wp_idx = 0;
2402         int if_idx = 0;
2403         int wp_start = cb->args[0];
2404         int if_start = cb->args[1];
2405         struct cfg80211_registered_device *rdev;
2406         struct wireless_dev *wdev;
2407
2408         rtnl_lock();
2409         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2410                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2411                         continue;
2412                 if (wp_idx < wp_start) {
2413                         wp_idx++;
2414                         continue;
2415                 }
2416                 if_idx = 0;
2417
2418                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2419                         if (if_idx < if_start) {
2420                                 if_idx++;
2421                                 continue;
2422                         }
2423                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2424                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2425                                                rdev, wdev, false) < 0) {
2426                                 goto out;
2427                         }
2428                         if_idx++;
2429                 }
2430
2431                 wp_idx++;
2432         }
2433  out:
2434         rtnl_unlock();
2435
2436         cb->args[0] = wp_idx;
2437         cb->args[1] = if_idx;
2438
2439         return skb->len;
2440 }
2441
2442 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2443 {
2444         struct sk_buff *msg;
2445         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2446         struct wireless_dev *wdev = info->user_ptr[1];
2447
2448         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2449         if (!msg)
2450                 return -ENOMEM;
2451
2452         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2453                                rdev, wdev, false) < 0) {
2454                 nlmsg_free(msg);
2455                 return -ENOBUFS;
2456         }
2457
2458         return genlmsg_reply(msg, info);
2459 }
2460
2461 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2462         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2463         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2464         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2465         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2466         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2467         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2468 };
2469
2470 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2471 {
2472         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2473         int flag;
2474
2475         *mntrflags = 0;
2476
2477         if (!nla)
2478                 return -EINVAL;
2479
2480         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2481                              nla, mntr_flags_policy))
2482                 return -EINVAL;
2483
2484         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2485                 if (flags[flag])
2486                         *mntrflags |= (1<<flag);
2487
2488         return 0;
2489 }
2490
2491 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2492                                struct net_device *netdev, u8 use_4addr,
2493                                enum nl80211_iftype iftype)
2494 {
2495         if (!use_4addr) {
2496                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2497                         return -EBUSY;
2498                 return 0;
2499         }
2500
2501         switch (iftype) {
2502         case NL80211_IFTYPE_AP_VLAN:
2503                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2504                         return 0;
2505                 break;
2506         case NL80211_IFTYPE_STATION:
2507                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2508                         return 0;
2509                 break;
2510         default:
2511                 break;
2512         }
2513
2514         return -EOPNOTSUPP;
2515 }
2516
2517 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2518 {
2519         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2520         struct vif_params params;
2521         int err;
2522         enum nl80211_iftype otype, ntype;
2523         struct net_device *dev = info->user_ptr[1];
2524         u32 _flags, *flags = NULL;
2525         bool change = false;
2526
2527         memset(&params, 0, sizeof(params));
2528
2529         otype = ntype = dev->ieee80211_ptr->iftype;
2530
2531         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2532                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2533                 if (otype != ntype)
2534                         change = true;
2535                 if (ntype > NL80211_IFTYPE_MAX)
2536                         return -EINVAL;
2537         }
2538
2539         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2540                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2541
2542                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2543                         return -EINVAL;
2544                 if (netif_running(dev))
2545                         return -EBUSY;
2546
2547                 wdev_lock(wdev);
2548                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2549                              IEEE80211_MAX_MESH_ID_LEN);
2550                 wdev->mesh_id_up_len =
2551                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2552                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2553                        wdev->mesh_id_up_len);
2554                 wdev_unlock(wdev);
2555         }
2556
2557         if (info->attrs[NL80211_ATTR_4ADDR]) {
2558                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2559                 change = true;
2560                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2561                 if (err)
2562                         return err;
2563         } else {
2564                 params.use_4addr = -1;
2565         }
2566
2567         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2568                 if (ntype != NL80211_IFTYPE_MONITOR)
2569                         return -EINVAL;
2570                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2571                                           &_flags);
2572                 if (err)
2573                         return err;
2574
2575                 flags = &_flags;
2576                 change = true;
2577         }
2578
2579         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2580             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2581                 return -EOPNOTSUPP;
2582
2583         if (change)
2584                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2585         else
2586                 err = 0;
2587
2588         if (!err && params.use_4addr != -1)
2589                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2590
2591         return err;
2592 }
2593
2594 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2595 {
2596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2597         struct vif_params params;
2598         struct wireless_dev *wdev;
2599         struct sk_buff *msg, *event;
2600         int err;
2601         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2602         u32 flags;
2603
2604         /* to avoid failing a new interface creation due to pending removal */
2605         cfg80211_destroy_ifaces(rdev);
2606
2607         memset(&params, 0, sizeof(params));
2608
2609         if (!info->attrs[NL80211_ATTR_IFNAME])
2610                 return -EINVAL;
2611
2612         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2613                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2614                 if (type > NL80211_IFTYPE_MAX)
2615                         return -EINVAL;
2616         }
2617
2618         if (!rdev->ops->add_virtual_intf ||
2619             !(rdev->wiphy.interface_modes & (1 << type)))
2620                 return -EOPNOTSUPP;
2621
2622         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2623              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2624             info->attrs[NL80211_ATTR_MAC]) {
2625                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2626                            ETH_ALEN);
2627                 if (!is_valid_ether_addr(params.macaddr))
2628                         return -EADDRNOTAVAIL;
2629         }
2630
2631         if (info->attrs[NL80211_ATTR_4ADDR]) {
2632                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2633                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2634                 if (err)
2635                         return err;
2636         }
2637
2638         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2639         if (!msg)
2640                 return -ENOMEM;
2641
2642         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2643                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2644                                   &flags);
2645
2646         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2647             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2648                 return -EOPNOTSUPP;
2649
2650         wdev = rdev_add_virtual_intf(rdev,
2651                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2652                                 type, err ? NULL : &flags, &params);
2653         if (WARN_ON(!wdev)) {
2654                 nlmsg_free(msg);
2655                 return -EPROTO;
2656         } else if (IS_ERR(wdev)) {
2657                 nlmsg_free(msg);
2658                 return PTR_ERR(wdev);
2659         }
2660
2661         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2662                 wdev->owner_nlportid = info->snd_portid;
2663
2664         switch (type) {
2665         case NL80211_IFTYPE_MESH_POINT:
2666                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2667                         break;
2668                 wdev_lock(wdev);
2669                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2670                              IEEE80211_MAX_MESH_ID_LEN);
2671                 wdev->mesh_id_up_len =
2672                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2673                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2674                        wdev->mesh_id_up_len);
2675                 wdev_unlock(wdev);
2676                 break;
2677         case NL80211_IFTYPE_P2P_DEVICE:
2678                 /*
2679                  * P2P Device doesn't have a netdev, so doesn't go
2680                  * through the netdev notifier and must be added here
2681                  */
2682                 mutex_init(&wdev->mtx);
2683                 INIT_LIST_HEAD(&wdev->event_list);
2684                 spin_lock_init(&wdev->event_lock);
2685                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2686                 spin_lock_init(&wdev->mgmt_registrations_lock);
2687
2688                 wdev->identifier = ++rdev->wdev_id;
2689                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2690                 rdev->devlist_generation++;
2691                 break;
2692         default:
2693                 break;
2694         }
2695
2696         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2697                                rdev, wdev, false) < 0) {
2698                 nlmsg_free(msg);
2699                 return -ENOBUFS;
2700         }
2701
2702         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2703         if (event) {
2704                 if (nl80211_send_iface(event, 0, 0, 0,
2705                                        rdev, wdev, false) < 0) {
2706                         nlmsg_free(event);
2707                         goto out;
2708                 }
2709
2710                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2711                                         event, 0, NL80211_MCGRP_CONFIG,
2712                                         GFP_KERNEL);
2713         }
2714
2715 out:
2716         return genlmsg_reply(msg, info);
2717 }
2718
2719 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2720 {
2721         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2722         struct wireless_dev *wdev = info->user_ptr[1];
2723         struct sk_buff *msg;
2724         int status;
2725
2726         if (!rdev->ops->del_virtual_intf)
2727                 return -EOPNOTSUPP;
2728
2729         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2730         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2731                 nlmsg_free(msg);
2732                 msg = NULL;
2733         }
2734
2735         /*
2736          * If we remove a wireless device without a netdev then clear
2737          * user_ptr[1] so that nl80211_post_doit won't dereference it
2738          * to check if it needs to do dev_put(). Otherwise it crashes
2739          * since the wdev has been freed, unlike with a netdev where
2740          * we need the dev_put() for the netdev to really be freed.
2741          */
2742         if (!wdev->netdev)
2743                 info->user_ptr[1] = NULL;
2744
2745         status = rdev_del_virtual_intf(rdev, wdev);
2746         if (status >= 0 && msg)
2747                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2748                                         msg, 0, NL80211_MCGRP_CONFIG,
2749                                         GFP_KERNEL);
2750         else
2751                 nlmsg_free(msg);
2752
2753         return status;
2754 }
2755
2756 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2757 {
2758         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2759         struct net_device *dev = info->user_ptr[1];
2760         u16 noack_map;
2761
2762         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2763                 return -EINVAL;
2764
2765         if (!rdev->ops->set_noack_map)
2766                 return -EOPNOTSUPP;
2767
2768         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2769
2770         return rdev_set_noack_map(rdev, dev, noack_map);
2771 }
2772
2773 struct get_key_cookie {
2774         struct sk_buff *msg;
2775         int error;
2776         int idx;
2777 };
2778
2779 static void get_key_callback(void *c, struct key_params *params)
2780 {
2781         struct nlattr *key;
2782         struct get_key_cookie *cookie = c;
2783
2784         if ((params->key &&
2785              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2786                      params->key_len, params->key)) ||
2787             (params->seq &&
2788              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2789                      params->seq_len, params->seq)) ||
2790             (params->cipher &&
2791              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2792                          params->cipher)))
2793                 goto nla_put_failure;
2794
2795         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2796         if (!key)
2797                 goto nla_put_failure;
2798
2799         if ((params->key &&
2800              nla_put(cookie->msg, NL80211_KEY_DATA,
2801                      params->key_len, params->key)) ||
2802             (params->seq &&
2803              nla_put(cookie->msg, NL80211_KEY_SEQ,
2804                      params->seq_len, params->seq)) ||
2805             (params->cipher &&
2806              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2807                          params->cipher)))
2808                 goto nla_put_failure;
2809
2810         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2811                 goto nla_put_failure;
2812
2813         nla_nest_end(cookie->msg, key);
2814
2815         return;
2816  nla_put_failure:
2817         cookie->error = 1;
2818 }
2819
2820 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2821 {
2822         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2823         int err;
2824         struct net_device *dev = info->user_ptr[1];
2825         u8 key_idx = 0;
2826         const u8 *mac_addr = NULL;
2827         bool pairwise;
2828         struct get_key_cookie cookie = {
2829                 .error = 0,
2830         };
2831         void *hdr;
2832         struct sk_buff *msg;
2833
2834         if (info->attrs[NL80211_ATTR_KEY_IDX])
2835                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2836
2837         if (key_idx > 5)
2838                 return -EINVAL;
2839
2840         if (info->attrs[NL80211_ATTR_MAC])
2841                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2842
2843         pairwise = !!mac_addr;
2844         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2845                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2846                 if (kt >= NUM_NL80211_KEYTYPES)
2847                         return -EINVAL;
2848                 if (kt != NL80211_KEYTYPE_GROUP &&
2849                     kt != NL80211_KEYTYPE_PAIRWISE)
2850                         return -EINVAL;
2851                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2852         }
2853
2854         if (!rdev->ops->get_key)
2855                 return -EOPNOTSUPP;
2856
2857         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2858                 return -ENOENT;
2859
2860         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2861         if (!msg)
2862                 return -ENOMEM;
2863
2864         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2865                              NL80211_CMD_NEW_KEY);
2866         if (!hdr)
2867                 goto nla_put_failure;
2868
2869         cookie.msg = msg;
2870         cookie.idx = key_idx;
2871
2872         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2873             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2874                 goto nla_put_failure;
2875         if (mac_addr &&
2876             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2877                 goto nla_put_failure;
2878
2879         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2880                            get_key_callback);
2881
2882         if (err)
2883                 goto free_msg;
2884
2885         if (cookie.error)
2886                 goto nla_put_failure;
2887
2888         genlmsg_end(msg, hdr);
2889         return genlmsg_reply(msg, info);
2890
2891  nla_put_failure:
2892         err = -ENOBUFS;
2893  free_msg:
2894         nlmsg_free(msg);
2895         return err;
2896 }
2897
2898 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2899 {
2900         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2901         struct key_parse key;
2902         int err;
2903         struct net_device *dev = info->user_ptr[1];
2904
2905         err = nl80211_parse_key(info, &key);
2906         if (err)
2907                 return err;
2908
2909         if (key.idx < 0)
2910                 return -EINVAL;
2911
2912         /* only support setting default key */
2913         if (!key.def && !key.defmgmt)
2914                 return -EINVAL;
2915
2916         wdev_lock(dev->ieee80211_ptr);
2917
2918         if (key.def) {
2919                 if (!rdev->ops->set_default_key) {
2920                         err = -EOPNOTSUPP;
2921                         goto out;
2922                 }
2923
2924                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2925                 if (err)
2926                         goto out;
2927
2928                 err = rdev_set_default_key(rdev, dev, key.idx,
2929                                                  key.def_uni, key.def_multi);
2930
2931                 if (err)
2932                         goto out;
2933
2934 #ifdef CONFIG_CFG80211_WEXT
2935                 dev->ieee80211_ptr->wext.default_key = key.idx;
2936 #endif
2937         } else {
2938                 if (key.def_uni || !key.def_multi) {
2939                         err = -EINVAL;
2940                         goto out;
2941                 }
2942
2943                 if (!rdev->ops->set_default_mgmt_key) {
2944                         err = -EOPNOTSUPP;
2945                         goto out;
2946                 }
2947
2948                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2949                 if (err)
2950                         goto out;
2951
2952                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2953                 if (err)
2954                         goto out;
2955
2956 #ifdef CONFIG_CFG80211_WEXT
2957                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2958 #endif
2959         }
2960
2961  out:
2962         wdev_unlock(dev->ieee80211_ptr);
2963
2964         return err;
2965 }
2966
2967 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2968 {
2969         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2970         int err;
2971         struct net_device *dev = info->user_ptr[1];
2972         struct key_parse key;
2973         const u8 *mac_addr = NULL;
2974
2975         err = nl80211_parse_key(info, &key);
2976         if (err)
2977                 return err;
2978
2979         if (!key.p.key)
2980                 return -EINVAL;
2981
2982         if (info->attrs[NL80211_ATTR_MAC])
2983                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2984
2985         if (key.type == -1) {
2986                 if (mac_addr)
2987                         key.type = NL80211_KEYTYPE_PAIRWISE;
2988                 else
2989                         key.type = NL80211_KEYTYPE_GROUP;
2990         }
2991
2992         /* for now */
2993         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2994             key.type != NL80211_KEYTYPE_GROUP)
2995                 return -EINVAL;
2996
2997         if (!rdev->ops->add_key)
2998                 return -EOPNOTSUPP;
2999
3000         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3001                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3002                                            mac_addr))
3003                 return -EINVAL;
3004
3005         wdev_lock(dev->ieee80211_ptr);
3006         err = nl80211_key_allowed(dev->ieee80211_ptr);
3007         if (!err)
3008                 err = rdev_add_key(rdev, dev, key.idx,
3009                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3010                                     mac_addr, &key.p);
3011         wdev_unlock(dev->ieee80211_ptr);
3012
3013         return err;
3014 }
3015
3016 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3017 {
3018         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3019         int err;
3020         struct net_device *dev = info->user_ptr[1];
3021         u8 *mac_addr = NULL;
3022         struct key_parse key;
3023
3024         err = nl80211_parse_key(info, &key);
3025         if (err)
3026                 return err;
3027
3028         if (info->attrs[NL80211_ATTR_MAC])
3029                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3030
3031         if (key.type == -1) {
3032                 if (mac_addr)
3033                         key.type = NL80211_KEYTYPE_PAIRWISE;
3034                 else
3035                         key.type = NL80211_KEYTYPE_GROUP;
3036         }
3037
3038         /* for now */
3039         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3040             key.type != NL80211_KEYTYPE_GROUP)
3041                 return -EINVAL;
3042
3043         if (!rdev->ops->del_key)
3044                 return -EOPNOTSUPP;
3045
3046         wdev_lock(dev->ieee80211_ptr);
3047         err = nl80211_key_allowed(dev->ieee80211_ptr);
3048
3049         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3050             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3051                 err = -ENOENT;
3052
3053         if (!err)
3054                 err = rdev_del_key(rdev, dev, key.idx,
3055                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3056                                    mac_addr);
3057
3058 #ifdef CONFIG_CFG80211_WEXT
3059         if (!err) {
3060                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3061                         dev->ieee80211_ptr->wext.default_key = -1;
3062                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3063                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3064         }
3065 #endif
3066         wdev_unlock(dev->ieee80211_ptr);
3067
3068         return err;
3069 }
3070
3071 /* This function returns an error or the number of nested attributes */
3072 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3073 {
3074         struct nlattr *attr;
3075         int n_entries = 0, tmp;
3076
3077         nla_for_each_nested(attr, nl_attr, tmp) {
3078                 if (nla_len(attr) != ETH_ALEN)
3079                         return -EINVAL;
3080
3081                 n_entries++;
3082         }
3083
3084         return n_entries;
3085 }
3086
3087 /*
3088  * This function parses ACL information and allocates memory for ACL data.
3089  * On successful return, the calling function is responsible to free the
3090  * ACL buffer returned by this function.
3091  */
3092 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3093                                                 struct genl_info *info)
3094 {
3095         enum nl80211_acl_policy acl_policy;
3096         struct nlattr *attr;
3097         struct cfg80211_acl_data *acl;
3098         int i = 0, n_entries, tmp;
3099
3100         if (!wiphy->max_acl_mac_addrs)
3101                 return ERR_PTR(-EOPNOTSUPP);
3102
3103         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3104                 return ERR_PTR(-EINVAL);
3105
3106         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3107         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3108             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3109                 return ERR_PTR(-EINVAL);
3110
3111         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3112                 return ERR_PTR(-EINVAL);
3113
3114         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3115         if (n_entries < 0)
3116                 return ERR_PTR(n_entries);
3117
3118         if (n_entries > wiphy->max_acl_mac_addrs)
3119                 return ERR_PTR(-ENOTSUPP);
3120
3121         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3122                       GFP_KERNEL);
3123         if (!acl)
3124                 return ERR_PTR(-ENOMEM);
3125
3126         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3127                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3128                 i++;
3129         }
3130
3131         acl->n_acl_entries = n_entries;
3132         acl->acl_policy = acl_policy;
3133
3134         return acl;
3135 }
3136
3137 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3138 {
3139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3140         struct net_device *dev = info->user_ptr[1];
3141         struct cfg80211_acl_data *acl;
3142         int err;
3143
3144         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3145             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3146                 return -EOPNOTSUPP;
3147
3148         if (!dev->ieee80211_ptr->beacon_interval)
3149                 return -EINVAL;
3150
3151         acl = parse_acl_data(&rdev->wiphy, info);
3152         if (IS_ERR(acl))
3153                 return PTR_ERR(acl);
3154
3155         err = rdev_set_mac_acl(rdev, dev, acl);
3156
3157         kfree(acl);
3158
3159         return err;
3160 }
3161
3162 static int nl80211_parse_beacon(struct nlattr *attrs[],
3163                                 struct cfg80211_beacon_data *bcn)
3164 {
3165         bool haveinfo = false;
3166
3167         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3168             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3169             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3170             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3171                 return -EINVAL;
3172
3173         memset(bcn, 0, sizeof(*bcn));
3174
3175         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3176                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3177                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3178                 if (!bcn->head_len)
3179                         return -EINVAL;
3180                 haveinfo = true;
3181         }
3182
3183         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3184                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3185                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3186                 haveinfo = true;
3187         }
3188
3189         if (!haveinfo)
3190                 return -EINVAL;
3191
3192         if (attrs[NL80211_ATTR_IE]) {
3193                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3194                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3195         }
3196
3197         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3198                 bcn->proberesp_ies =
3199                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3200                 bcn->proberesp_ies_len =
3201                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3202         }
3203
3204         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3205                 bcn->assocresp_ies =
3206                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3207                 bcn->assocresp_ies_len =
3208                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3209         }
3210
3211         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3212                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3213                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3214         }
3215
3216         return 0;
3217 }
3218
3219 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3220                                    struct cfg80211_ap_settings *params)
3221 {
3222         struct wireless_dev *wdev;
3223         bool ret = false;
3224
3225         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3226                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3227                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3228                         continue;
3229
3230                 if (!wdev->preset_chandef.chan)
3231                         continue;
3232
3233                 params->chandef = wdev->preset_chandef;
3234                 ret = true;
3235                 break;
3236         }
3237
3238         return ret;
3239 }
3240
3241 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3242                                     enum nl80211_auth_type auth_type,
3243                                     enum nl80211_commands cmd)
3244 {
3245         if (auth_type > NL80211_AUTHTYPE_MAX)
3246                 return false;
3247
3248         switch (cmd) {
3249         case NL80211_CMD_AUTHENTICATE:
3250                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3251                     auth_type == NL80211_AUTHTYPE_SAE)
3252                         return false;
3253                 return true;
3254         case NL80211_CMD_CONNECT:
3255         case NL80211_CMD_START_AP:
3256                 /* SAE not supported yet */
3257                 if (auth_type == NL80211_AUTHTYPE_SAE)
3258                         return false;
3259                 return true;
3260         default:
3261                 return false;
3262         }
3263 }
3264
3265 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3266 {
3267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3268         struct net_device *dev = info->user_ptr[1];
3269         struct wireless_dev *wdev = dev->ieee80211_ptr;
3270         struct cfg80211_ap_settings params;
3271         int err;
3272
3273         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3274             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3275                 return -EOPNOTSUPP;
3276
3277         if (!rdev->ops->start_ap)
3278                 return -EOPNOTSUPP;
3279
3280         if (wdev->beacon_interval)
3281                 return -EALREADY;
3282
3283         memset(&params, 0, sizeof(params));
3284
3285         /* these are required for START_AP */
3286         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3287             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3288             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3289                 return -EINVAL;
3290
3291         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3292         if (err)
3293                 return err;
3294
3295         params.beacon_interval =
3296                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3297         params.dtim_period =
3298                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3299
3300         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3301         if (err)
3302                 return err;
3303
3304         /*
3305          * In theory, some of these attributes should be required here
3306          * but since they were not used when the command was originally
3307          * added, keep them optional for old user space programs to let
3308          * them continue to work with drivers that do not need the
3309          * additional information -- drivers must check!
3310          */
3311         if (info->attrs[NL80211_ATTR_SSID]) {
3312                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3313                 params.ssid_len =
3314                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3315                 if (params.ssid_len == 0 ||
3316                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3317                         return -EINVAL;
3318         }
3319
3320         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3321                 params.hidden_ssid = nla_get_u32(
3322                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3323                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3324                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3325                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3326                         return -EINVAL;
3327         }
3328
3329         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3330
3331         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3332                 params.auth_type = nla_get_u32(
3333                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3334                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3335                                              NL80211_CMD_START_AP))
3336                         return -EINVAL;
3337         } else
3338                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3339
3340         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3341                                       NL80211_MAX_NR_CIPHER_SUITES);
3342         if (err)
3343                 return err;
3344
3345         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3346                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3347                         return -EOPNOTSUPP;
3348                 params.inactivity_timeout = nla_get_u16(
3349                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3350         }
3351
3352         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3353                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3354                         return -EINVAL;
3355                 params.p2p_ctwindow =
3356                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3357                 if (params.p2p_ctwindow > 127)
3358                         return -EINVAL;
3359                 if (params.p2p_ctwindow != 0 &&
3360                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3361                         return -EINVAL;
3362         }
3363
3364         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3365                 u8 tmp;
3366
3367                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3368                         return -EINVAL;
3369                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3370                 if (tmp > 1)
3371                         return -EINVAL;
3372                 params.p2p_opp_ps = tmp;
3373                 if (params.p2p_opp_ps != 0 &&
3374                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3375                         return -EINVAL;
3376         }
3377
3378         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3379                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3380                 if (err)
3381                         return err;
3382         } else if (wdev->preset_chandef.chan) {
3383                 params.chandef = wdev->preset_chandef;
3384         } else if (!nl80211_get_ap_channel(rdev, &params))
3385                 return -EINVAL;
3386
3387         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3388                                      wdev->iftype))
3389                 return -EINVAL;
3390
3391         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3392                 params.acl = parse_acl_data(&rdev->wiphy, info);
3393                 if (IS_ERR(params.acl))
3394                         return PTR_ERR(params.acl);
3395         }
3396
3397         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3398                 params.smps_mode =
3399                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3400                 switch (params.smps_mode) {
3401                 case NL80211_SMPS_OFF:
3402                         break;
3403                 case NL80211_SMPS_STATIC:
3404                         if (!(rdev->wiphy.features &
3405                               NL80211_FEATURE_STATIC_SMPS))
3406                                 return -EINVAL;
3407                         break;
3408                 case NL80211_SMPS_DYNAMIC:
3409                         if (!(rdev->wiphy.features &
3410                               NL80211_FEATURE_DYNAMIC_SMPS))
3411                                 return -EINVAL;
3412                         break;
3413                 default:
3414                         return -EINVAL;
3415                 }
3416         } else {
3417                 params.smps_mode = NL80211_SMPS_OFF;
3418         }
3419
3420         wdev_lock(wdev);
3421         err = rdev_start_ap(rdev, dev, &params);
3422         if (!err) {
3423                 wdev->preset_chandef = params.chandef;
3424                 wdev->beacon_interval = params.beacon_interval;
3425                 wdev->chandef = params.chandef;
3426                 wdev->ssid_len = params.ssid_len;
3427                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3428         }
3429         wdev_unlock(wdev);
3430
3431         kfree(params.acl);
3432
3433         return err;
3434 }
3435
3436 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3437 {
3438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3439         struct net_device *dev = info->user_ptr[1];
3440         struct wireless_dev *wdev = dev->ieee80211_ptr;
3441         struct cfg80211_beacon_data params;
3442         int err;
3443
3444         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3445             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3446                 return -EOPNOTSUPP;
3447
3448         if (!rdev->ops->change_beacon)
3449                 return -EOPNOTSUPP;
3450
3451         if (!wdev->beacon_interval)
3452                 return -EINVAL;
3453
3454         err = nl80211_parse_beacon(info->attrs, &params);
3455         if (err)
3456                 return err;
3457
3458         wdev_lock(wdev);
3459         err = rdev_change_beacon(rdev, dev, &params);
3460         wdev_unlock(wdev);
3461
3462         return err;
3463 }
3464
3465 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3466 {
3467         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3468         struct net_device *dev = info->user_ptr[1];
3469
3470         return cfg80211_stop_ap(rdev, dev, false);
3471 }
3472
3473 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3474         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3475         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3476         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3477         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3478         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3479         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3480 };
3481
3482 static int parse_station_flags(struct genl_info *info,
3483                                enum nl80211_iftype iftype,
3484                                struct station_parameters *params)
3485 {
3486         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3487         struct nlattr *nla;
3488         int flag;
3489
3490         /*
3491          * Try parsing the new attribute first so userspace
3492          * can specify both for older kernels.
3493          */
3494         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3495         if (nla) {
3496                 struct nl80211_sta_flag_update *sta_flags;
3497
3498                 sta_flags = nla_data(nla);
3499                 params->sta_flags_mask = sta_flags->mask;
3500                 params->sta_flags_set = sta_flags->set;
3501                 params->sta_flags_set &= params->sta_flags_mask;
3502                 if ((params->sta_flags_mask |
3503                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3504                         return -EINVAL;
3505                 return 0;
3506         }
3507
3508         /* if present, parse the old attribute */
3509
3510         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3511         if (!nla)
3512                 return 0;
3513
3514         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3515                              nla, sta_flags_policy))
3516                 return -EINVAL;
3517
3518         /*
3519          * Only allow certain flags for interface types so that
3520          * other attributes are silently ignored. Remember that
3521          * this is backward compatibility code with old userspace
3522          * and shouldn't be hit in other cases anyway.
3523          */
3524         switch (iftype) {
3525         case NL80211_IFTYPE_AP:
3526         case NL80211_IFTYPE_AP_VLAN:
3527         case NL80211_IFTYPE_P2P_GO:
3528                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3529                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3530                                          BIT(NL80211_STA_FLAG_WME) |
3531                                          BIT(NL80211_STA_FLAG_MFP);
3532                 break;
3533         case NL80211_IFTYPE_P2P_CLIENT:
3534         case NL80211_IFTYPE_STATION:
3535                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3536                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3537                 break;
3538         case NL80211_IFTYPE_MESH_POINT:
3539                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3540                                          BIT(NL80211_STA_FLAG_MFP) |
3541                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3542         default:
3543                 return -EINVAL;
3544         }
3545
3546         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3547                 if (flags[flag]) {
3548                         params->sta_flags_set |= (1<<flag);
3549
3550                         /* no longer support new API additions in old API */
3551                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3552                                 return -EINVAL;
3553                 }
3554         }
3555
3556         return 0;
3557 }
3558
3559 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3560                                  int attr)
3561 {
3562         struct nlattr *rate;
3563         u32 bitrate;
3564         u16 bitrate_compat;
3565
3566         rate = nla_nest_start(msg, attr);
3567         if (!rate)
3568                 return false;
3569
3570         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3571         bitrate = cfg80211_calculate_bitrate(info);
3572         /* report 16-bit bitrate only if we can */
3573         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3574         if (bitrate > 0 &&
3575             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3576                 return false;
3577         if (bitrate_compat > 0 &&
3578             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3579                 return false;
3580
3581         if (info->flags & RATE_INFO_FLAGS_MCS) {
3582                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3583                         return false;
3584                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3585                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3586                         return false;
3587                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3588                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3589                         return false;
3590         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3591                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3592                         return false;
3593                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
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_80_MHZ_WIDTH &&
3599                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3600                         return false;
3601                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3602                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3603                         return false;
3604                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3605                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3606                         return false;
3607                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3608                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3609                         return false;
3610         }
3611
3612         nla_nest_end(msg, rate);
3613         return true;
3614 }
3615
3616 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3617                                int id)
3618 {
3619         void *attr;
3620         int i = 0;
3621
3622         if (!mask)
3623                 return true;
3624
3625         attr = nla_nest_start(msg, id);
3626         if (!attr)
3627                 return false;
3628
3629         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3630                 if (!(mask & BIT(i)))
3631                         continue;
3632
3633                 if (nla_put_u8(msg, i, signal[i]))
3634                         return false;
3635         }
3636
3637         nla_nest_end(msg, attr);
3638
3639         return true;
3640 }
3641
3642 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3643                                 int flags,
3644                                 struct cfg80211_registered_device *rdev,
3645                                 struct net_device *dev,
3646                                 const u8 *mac_addr, struct station_info *sinfo)
3647 {
3648         void *hdr;
3649         struct nlattr *sinfoattr, *bss_param;
3650
3651         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3652         if (!hdr)
3653                 return -1;
3654
3655         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3656             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3657             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3658                 goto nla_put_failure;
3659
3660         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3661         if (!sinfoattr)
3662                 goto nla_put_failure;
3663         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3664             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3665                         sinfo->connected_time))
3666                 goto nla_put_failure;
3667         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3668             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3669                         sinfo->inactive_time))
3670                 goto nla_put_failure;
3671         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3672                               STATION_INFO_RX_BYTES64)) &&
3673             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3674                         (u32)sinfo->rx_bytes))
3675                 goto nla_put_failure;
3676         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3677                               STATION_INFO_TX_BYTES64)) &&
3678             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3679                         (u32)sinfo->tx_bytes))
3680                 goto nla_put_failure;
3681         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3682             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3683                         sinfo->rx_bytes))
3684                 goto nla_put_failure;
3685         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3686             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3687                         sinfo->tx_bytes))
3688                 goto nla_put_failure;
3689         if ((sinfo->filled & STATION_INFO_LLID) &&
3690             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3691                 goto nla_put_failure;
3692         if ((sinfo->filled & STATION_INFO_PLID) &&
3693             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3694                 goto nla_put_failure;
3695         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3696             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3697                        sinfo->plink_state))
3698                 goto nla_put_failure;
3699         switch (rdev->wiphy.signal_type) {
3700         case CFG80211_SIGNAL_TYPE_MBM:
3701                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3702                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3703                                sinfo->signal))
3704                         goto nla_put_failure;
3705                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3706                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3707                                sinfo->signal_avg))
3708                         goto nla_put_failure;
3709                 break;
3710         default:
3711                 break;
3712         }
3713         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3714                 if (!nl80211_put_signal(msg, sinfo->chains,
3715                                         sinfo->chain_signal,
3716                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3717                         goto nla_put_failure;
3718         }
3719         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3720                 if (!nl80211_put_signal(msg, sinfo->chains,
3721                                         sinfo->chain_signal_avg,
3722                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3723                         goto nla_put_failure;
3724         }
3725         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3726                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3727                                           NL80211_STA_INFO_TX_BITRATE))
3728                         goto nla_put_failure;
3729         }
3730         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3731                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3732                                           NL80211_STA_INFO_RX_BITRATE))
3733                         goto nla_put_failure;
3734         }
3735         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3736             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3737                         sinfo->rx_packets))
3738                 goto nla_put_failure;
3739         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3740             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3741                         sinfo->tx_packets))
3742                 goto nla_put_failure;
3743         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3744             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3745                         sinfo->tx_retries))
3746                 goto nla_put_failure;
3747         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3748             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3749                         sinfo->tx_failed))
3750                 goto nla_put_failure;
3751         if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3752             nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3753                         sinfo->expected_throughput))
3754                 goto nla_put_failure;
3755         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3756             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3757                         sinfo->beacon_loss_count))
3758                 goto nla_put_failure;
3759         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3760             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3761                         sinfo->local_pm))
3762                 goto nla_put_failure;
3763         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3764             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3765                         sinfo->peer_pm))
3766                 goto nla_put_failure;
3767         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3768             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3769                         sinfo->nonpeer_pm))
3770                 goto nla_put_failure;
3771         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3772                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3773                 if (!bss_param)
3774                         goto nla_put_failure;
3775
3776                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3777                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3778                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3779                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3780                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3781                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3782                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3783                                sinfo->bss_param.dtim_period) ||
3784                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3785                                 sinfo->bss_param.beacon_interval))
3786                         goto nla_put_failure;
3787
3788                 nla_nest_end(msg, bss_param);
3789         }
3790         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3791             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3792                     sizeof(struct nl80211_sta_flag_update),
3793                     &sinfo->sta_flags))
3794                 goto nla_put_failure;
3795         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3796                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3797                             sinfo->t_offset))
3798                 goto nla_put_failure;
3799         nla_nest_end(msg, sinfoattr);
3800
3801         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3802             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3803                     sinfo->assoc_req_ies))
3804                 goto nla_put_failure;
3805
3806         return genlmsg_end(msg, hdr);
3807
3808  nla_put_failure:
3809         genlmsg_cancel(msg, hdr);
3810         return -EMSGSIZE;
3811 }
3812
3813 static int nl80211_dump_station(struct sk_buff *skb,
3814                                 struct netlink_callback *cb)
3815 {
3816         struct station_info sinfo;
3817         struct cfg80211_registered_device *rdev;
3818         struct wireless_dev *wdev;
3819         u8 mac_addr[ETH_ALEN];
3820         int sta_idx = cb->args[2];
3821         int err;
3822
3823         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3824         if (err)
3825                 return err;
3826
3827         if (!wdev->netdev) {
3828                 err = -EINVAL;
3829                 goto out_err;
3830         }
3831
3832         if (!rdev->ops->dump_station) {
3833                 err = -EOPNOTSUPP;
3834                 goto out_err;
3835         }
3836
3837         while (1) {
3838                 memset(&sinfo, 0, sizeof(sinfo));
3839                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3840                                         mac_addr, &sinfo);
3841                 if (err == -ENOENT)
3842                         break;
3843                 if (err)
3844                         goto out_err;
3845
3846                 if (nl80211_send_station(skb,
3847                                 NETLINK_CB(cb->skb).portid,
3848                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3849                                 rdev, wdev->netdev, mac_addr,
3850                                 &sinfo) < 0)
3851                         goto out;
3852
3853                 sta_idx++;
3854         }
3855
3856
3857  out:
3858         cb->args[2] = sta_idx;
3859         err = skb->len;
3860  out_err:
3861         nl80211_finish_wdev_dump(rdev);
3862
3863         return err;
3864 }
3865
3866 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3867 {
3868         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3869         struct net_device *dev = info->user_ptr[1];
3870         struct station_info sinfo;
3871         struct sk_buff *msg;
3872         u8 *mac_addr = NULL;
3873         int err;
3874
3875         memset(&sinfo, 0, sizeof(sinfo));
3876
3877         if (!info->attrs[NL80211_ATTR_MAC])
3878                 return -EINVAL;
3879
3880         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3881
3882         if (!rdev->ops->get_station)
3883                 return -EOPNOTSUPP;
3884
3885         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3886         if (err)
3887                 return err;
3888
3889         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3890         if (!msg)
3891                 return -ENOMEM;
3892
3893         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3894                                  rdev, dev, mac_addr, &sinfo) < 0) {
3895                 nlmsg_free(msg);
3896                 return -ENOBUFS;
3897         }
3898
3899         return genlmsg_reply(msg, info);
3900 }
3901
3902 int cfg80211_check_station_change(struct wiphy *wiphy,
3903                                   struct station_parameters *params,
3904                                   enum cfg80211_station_type statype)
3905 {
3906         if (params->listen_interval != -1)
3907                 return -EINVAL;
3908         if (params->aid &&
3909             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3910                 return -EINVAL;
3911
3912         /* When you run into this, adjust the code below for the new flag */
3913         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3914
3915         switch (statype) {
3916         case CFG80211_STA_MESH_PEER_KERNEL:
3917         case CFG80211_STA_MESH_PEER_USER:
3918                 /*
3919                  * No ignoring the TDLS flag here -- the userspace mesh
3920                  * code doesn't have the bug of including TDLS in the
3921                  * mask everywhere.
3922                  */
3923                 if (params->sta_flags_mask &
3924                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3925                                   BIT(NL80211_STA_FLAG_MFP) |
3926                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3927                         return -EINVAL;
3928                 break;
3929         case CFG80211_STA_TDLS_PEER_SETUP:
3930         case CFG80211_STA_TDLS_PEER_ACTIVE:
3931                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3932                         return -EINVAL;
3933                 /* ignore since it can't change */
3934                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3935                 break;
3936         default:
3937                 /* disallow mesh-specific things */
3938                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3939                         return -EINVAL;
3940                 if (params->local_pm)
3941                         return -EINVAL;
3942                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3943                         return -EINVAL;
3944         }
3945
3946         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3947             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3948                 /* TDLS can't be set, ... */
3949                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3950                         return -EINVAL;
3951                 /*
3952                  * ... but don't bother the driver with it. This works around
3953                  * a hostapd/wpa_supplicant issue -- it always includes the
3954                  * TLDS_PEER flag in the mask even for AP mode.
3955                  */
3956                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3957         }
3958
3959         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3960                 /* reject other things that can't change */
3961                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3962                         return -EINVAL;
3963                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3964                         return -EINVAL;
3965                 if (params->supported_rates)
3966                         return -EINVAL;
3967                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3968                         return -EINVAL;
3969         }
3970
3971         if (statype != CFG80211_STA_AP_CLIENT) {
3972                 if (params->vlan)
3973                         return -EINVAL;
3974         }
3975
3976         switch (statype) {
3977         case CFG80211_STA_AP_MLME_CLIENT:
3978                 /* Use this only for authorizing/unauthorizing a station */
3979                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3980                         return -EOPNOTSUPP;
3981                 break;
3982         case CFG80211_STA_AP_CLIENT:
3983                 /* accept only the listed bits */
3984                 if (params->sta_flags_mask &
3985                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3986                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3987                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3988                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3989                                   BIT(NL80211_STA_FLAG_WME) |
3990                                   BIT(NL80211_STA_FLAG_MFP)))
3991                         return -EINVAL;
3992
3993                 /* but authenticated/associated only if driver handles it */
3994                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3995                     params->sta_flags_mask &
3996                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3997                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3998                         return -EINVAL;
3999                 break;
4000         case CFG80211_STA_IBSS:
4001         case CFG80211_STA_AP_STA:
4002                 /* reject any changes other than AUTHORIZED */
4003                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4004                         return -EINVAL;
4005                 break;
4006         case CFG80211_STA_TDLS_PEER_SETUP:
4007                 /* reject any changes other than AUTHORIZED or WME */
4008                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4009                                                BIT(NL80211_STA_FLAG_WME)))
4010                         return -EINVAL;
4011                 /* force (at least) rates when authorizing */
4012                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4013                     !params->supported_rates)
4014                         return -EINVAL;
4015                 break;
4016         case CFG80211_STA_TDLS_PEER_ACTIVE:
4017                 /* reject any changes */
4018                 return -EINVAL;
4019         case CFG80211_STA_MESH_PEER_KERNEL:
4020                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4021                         return -EINVAL;
4022                 break;
4023         case CFG80211_STA_MESH_PEER_USER:
4024                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4025                         return -EINVAL;
4026                 break;
4027         }
4028
4029         return 0;
4030 }
4031 EXPORT_SYMBOL(cfg80211_check_station_change);
4032
4033 /*
4034  * Get vlan interface making sure it is running and on the right wiphy.
4035  */
4036 static struct net_device *get_vlan(struct genl_info *info,
4037                                    struct cfg80211_registered_device *rdev)
4038 {
4039         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4040         struct net_device *v;
4041         int ret;
4042
4043         if (!vlanattr)
4044                 return NULL;
4045
4046         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4047         if (!v)
4048                 return ERR_PTR(-ENODEV);
4049
4050         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4051                 ret = -EINVAL;
4052                 goto error;
4053         }
4054
4055         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4056             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4057             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4058                 ret = -EINVAL;
4059                 goto error;
4060         }
4061
4062         if (!netif_running(v)) {
4063                 ret = -ENETDOWN;
4064                 goto error;
4065         }
4066
4067         return v;
4068  error:
4069         dev_put(v);
4070         return ERR_PTR(ret);
4071 }
4072
4073 static const struct nla_policy
4074 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4075         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4076         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4077 };
4078
4079 static int nl80211_parse_sta_wme(struct genl_info *info,
4080                                  struct station_parameters *params)
4081 {
4082         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4083         struct nlattr *nla;
4084         int err;
4085
4086         /* parse WME attributes if present */
4087         if (!info->attrs[NL80211_ATTR_STA_WME])
4088                 return 0;
4089
4090         nla = info->attrs[NL80211_ATTR_STA_WME];
4091         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4092                                nl80211_sta_wme_policy);
4093         if (err)
4094                 return err;
4095
4096         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4097                 params->uapsd_queues = nla_get_u8(
4098                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4099         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4100                 return -EINVAL;
4101
4102         if (tb[NL80211_STA_WME_MAX_SP])
4103                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4104
4105         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4106                 return -EINVAL;
4107
4108         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4109
4110         return 0;
4111 }
4112
4113 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4114                                       struct station_parameters *params)
4115 {
4116         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4117                 params->supported_channels =
4118                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4119                 params->supported_channels_len =
4120                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4121                 /*
4122                  * Need to include at least one (first channel, number of
4123                  * channels) tuple for each subband, and must have proper
4124                  * tuples for the rest of the data as well.
4125                  */
4126                 if (params->supported_channels_len < 2)
4127                         return -EINVAL;
4128                 if (params->supported_channels_len % 2)
4129                         return -EINVAL;
4130         }
4131
4132         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4133                 params->supported_oper_classes =
4134                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4135                 params->supported_oper_classes_len =
4136                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4137                 /*
4138                  * The value of the Length field of the Supported Operating
4139                  * Classes element is between 2 and 253.
4140                  */
4141                 if (params->supported_oper_classes_len < 2 ||
4142                     params->supported_oper_classes_len > 253)
4143                         return -EINVAL;
4144         }
4145         return 0;
4146 }
4147
4148 static int nl80211_set_station_tdls(struct genl_info *info,
4149                                     struct station_parameters *params)
4150 {
4151         int err;
4152         /* Dummy STA entry gets updated once the peer capabilities are known */
4153         if (info->attrs[NL80211_ATTR_PEER_AID])
4154                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4155         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4156                 params->ht_capa =
4157                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4158         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4159                 params->vht_capa =
4160                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4161
4162         err = nl80211_parse_sta_channel_info(info, params);
4163         if (err)
4164                 return err;
4165
4166         return nl80211_parse_sta_wme(info, params);
4167 }
4168
4169 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4170 {
4171         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4172         struct net_device *dev = info->user_ptr[1];
4173         struct station_parameters params;
4174         u8 *mac_addr;
4175         int err;
4176
4177         memset(&params, 0, sizeof(params));
4178
4179         params.listen_interval = -1;
4180
4181         if (!rdev->ops->change_station)
4182                 return -EOPNOTSUPP;
4183
4184         if (info->attrs[NL80211_ATTR_STA_AID])
4185                 return -EINVAL;
4186
4187         if (!info->attrs[NL80211_ATTR_MAC])
4188                 return -EINVAL;
4189
4190         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4191
4192         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4193                 params.supported_rates =
4194                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4195                 params.supported_rates_len =
4196                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4197         }
4198
4199         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4200                 params.capability =
4201                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4202                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4203         }
4204
4205         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4206                 params.ext_capab =
4207                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4208                 params.ext_capab_len =
4209                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4210         }
4211
4212         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4213                 return -EINVAL;
4214
4215         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4216                 return -EINVAL;
4217
4218         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4219                 params.plink_action =
4220                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4221                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4222                         return -EINVAL;
4223         }
4224
4225         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4226                 params.plink_state =
4227                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4228                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4229                         return -EINVAL;
4230                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4231         }
4232
4233         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4234                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4235                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4236
4237                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4238                     pm > NL80211_MESH_POWER_MAX)
4239                         return -EINVAL;
4240
4241                 params.local_pm = pm;
4242         }
4243
4244         /* Include parameters for TDLS peer (will check later) */
4245         err = nl80211_set_station_tdls(info, &params);
4246         if (err)
4247                 return err;
4248
4249         params.vlan = get_vlan(info, rdev);
4250         if (IS_ERR(params.vlan))
4251                 return PTR_ERR(params.vlan);
4252
4253         switch (dev->ieee80211_ptr->iftype) {
4254         case NL80211_IFTYPE_AP:
4255         case NL80211_IFTYPE_AP_VLAN:
4256         case NL80211_IFTYPE_P2P_GO:
4257         case NL80211_IFTYPE_P2P_CLIENT:
4258         case NL80211_IFTYPE_STATION:
4259         case NL80211_IFTYPE_ADHOC:
4260         case NL80211_IFTYPE_MESH_POINT:
4261                 break;
4262         default:
4263                 err = -EOPNOTSUPP;
4264                 goto out_put_vlan;
4265         }
4266
4267         /* driver will call cfg80211_check_station_change() */
4268         err = rdev_change_station(rdev, dev, mac_addr, &params);
4269
4270  out_put_vlan:
4271         if (params.vlan)
4272                 dev_put(params.vlan);
4273
4274         return err;
4275 }
4276
4277 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4278 {
4279         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4280         int err;
4281         struct net_device *dev = info->user_ptr[1];
4282         struct station_parameters params;
4283         u8 *mac_addr = NULL;
4284
4285         memset(&params, 0, sizeof(params));
4286
4287         if (!rdev->ops->add_station)
4288                 return -EOPNOTSUPP;
4289
4290         if (!info->attrs[NL80211_ATTR_MAC])
4291                 return -EINVAL;
4292
4293         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4294                 return -EINVAL;
4295
4296         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4297                 return -EINVAL;
4298
4299         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4300             !info->attrs[NL80211_ATTR_PEER_AID])
4301                 return -EINVAL;
4302
4303         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4304         params.supported_rates =
4305                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4306         params.supported_rates_len =
4307                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4308         params.listen_interval =
4309                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4310
4311         if (info->attrs[NL80211_ATTR_PEER_AID])
4312                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4313         else
4314                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4315         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4316                 return -EINVAL;
4317
4318         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4319                 params.capability =
4320                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4321                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4322         }
4323
4324         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4325                 params.ext_capab =
4326                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4327                 params.ext_capab_len =
4328                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4329         }
4330
4331         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4332                 params.ht_capa =
4333                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4334
4335         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4336                 params.vht_capa =
4337                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4338
4339         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4340                 params.opmode_notif_used = true;
4341                 params.opmode_notif =
4342                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4343         }
4344
4345         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4346                 params.plink_action =
4347                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4348                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4349                         return -EINVAL;
4350         }
4351
4352         err = nl80211_parse_sta_channel_info(info, &params);
4353         if (err)
4354                 return err;
4355
4356         err = nl80211_parse_sta_wme(info, &params);
4357         if (err)
4358                 return err;
4359
4360         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4361                 return -EINVAL;
4362
4363         /* When you run into this, adjust the code below for the new flag */
4364         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4365
4366         switch (dev->ieee80211_ptr->iftype) {
4367         case NL80211_IFTYPE_AP:
4368         case NL80211_IFTYPE_AP_VLAN:
4369         case NL80211_IFTYPE_P2P_GO:
4370                 /* ignore WME attributes if iface/sta is not capable */
4371                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4372                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4373                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4374
4375                 /* TDLS peers cannot be added */
4376                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4377                     info->attrs[NL80211_ATTR_PEER_AID])
4378                         return -EINVAL;
4379                 /* but don't bother the driver with it */
4380                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4381
4382                 /* allow authenticated/associated only if driver handles it */
4383                 if (!(rdev->wiphy.features &
4384                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4385                     params.sta_flags_mask &
4386                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4387                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4388                         return -EINVAL;
4389
4390                 /* must be last in here for error handling */
4391                 params.vlan = get_vlan(info, rdev);
4392                 if (IS_ERR(params.vlan))
4393                         return PTR_ERR(params.vlan);
4394                 break;
4395         case NL80211_IFTYPE_MESH_POINT:
4396                 /* ignore uAPSD data */
4397                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4398
4399                 /* associated is disallowed */
4400                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4401                         return -EINVAL;
4402                 /* TDLS peers cannot be added */
4403                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4404                     info->attrs[NL80211_ATTR_PEER_AID])
4405                         return -EINVAL;
4406                 break;
4407         case NL80211_IFTYPE_STATION:
4408         case NL80211_IFTYPE_P2P_CLIENT:
4409                 /* ignore uAPSD data */
4410                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4411
4412                 /* these are disallowed */
4413                 if (params.sta_flags_mask &
4414                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4415                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4416                         return -EINVAL;
4417                 /* Only TDLS peers can be added */
4418                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4419                         return -EINVAL;
4420                 /* Can only add if TDLS ... */
4421                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4422                         return -EOPNOTSUPP;
4423                 /* ... with external setup is supported */
4424                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4425                         return -EOPNOTSUPP;
4426                 /*
4427                  * Older wpa_supplicant versions always mark the TDLS peer
4428                  * as authorized, but it shouldn't yet be.
4429                  */
4430                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4431                 break;
4432         default:
4433                 return -EOPNOTSUPP;
4434         }
4435
4436         /* be aware of params.vlan when changing code here */
4437
4438         err = rdev_add_station(rdev, dev, mac_addr, &params);
4439
4440         if (params.vlan)
4441                 dev_put(params.vlan);
4442         return err;
4443 }
4444
4445 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4446 {
4447         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4448         struct net_device *dev = info->user_ptr[1];
4449         struct station_del_parameters params;
4450
4451         memset(&params, 0, sizeof(params));
4452
4453         if (info->attrs[NL80211_ATTR_MAC])
4454                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4455
4456         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4457             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4458             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4459             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4460                 return -EINVAL;
4461
4462         if (!rdev->ops->del_station)
4463                 return -EOPNOTSUPP;
4464
4465         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4466                 params.subtype =
4467                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4468                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4469                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4470                         return -EINVAL;
4471         } else {
4472                 /* Default to Deauthentication frame */
4473                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4474         }
4475
4476         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4477                 params.reason_code =
4478                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4479                 if (params.reason_code == 0)
4480                         return -EINVAL; /* 0 is reserved */
4481         } else {
4482                 /* Default to reason code 2 */
4483                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4484         }
4485
4486         return rdev_del_station(rdev, dev, &params);
4487 }
4488
4489 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4490                                 int flags, struct net_device *dev,
4491                                 u8 *dst, u8 *next_hop,
4492                                 struct mpath_info *pinfo)
4493 {
4494         void *hdr;
4495         struct nlattr *pinfoattr;
4496
4497         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4498         if (!hdr)
4499                 return -1;
4500
4501         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4502             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4503             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4504             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4505                 goto nla_put_failure;
4506
4507         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4508         if (!pinfoattr)
4509                 goto nla_put_failure;
4510         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4511             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4512                         pinfo->frame_qlen))
4513                 goto nla_put_failure;
4514         if (((pinfo->filled & MPATH_INFO_SN) &&
4515              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4516             ((pinfo->filled & MPATH_INFO_METRIC) &&
4517              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4518                          pinfo->metric)) ||
4519             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4520              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4521                          pinfo->exptime)) ||
4522             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4523              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4524                         pinfo->flags)) ||
4525             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4526              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4527                          pinfo->discovery_timeout)) ||
4528             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4529              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4530                         pinfo->discovery_retries)))
4531                 goto nla_put_failure;
4532
4533         nla_nest_end(msg, pinfoattr);
4534
4535         return genlmsg_end(msg, hdr);
4536
4537  nla_put_failure:
4538         genlmsg_cancel(msg, hdr);
4539         return -EMSGSIZE;
4540 }
4541
4542 static int nl80211_dump_mpath(struct sk_buff *skb,
4543                               struct netlink_callback *cb)
4544 {
4545         struct mpath_info pinfo;
4546         struct cfg80211_registered_device *rdev;
4547         struct wireless_dev *wdev;
4548         u8 dst[ETH_ALEN];
4549         u8 next_hop[ETH_ALEN];
4550         int path_idx = cb->args[2];
4551         int err;
4552
4553         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4554         if (err)
4555                 return err;
4556
4557         if (!rdev->ops->dump_mpath) {
4558                 err = -EOPNOTSUPP;
4559                 goto out_err;
4560         }
4561
4562         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4563                 err = -EOPNOTSUPP;
4564                 goto out_err;
4565         }
4566
4567         while (1) {
4568                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4569                                       next_hop, &pinfo);
4570                 if (err == -ENOENT)
4571                         break;
4572                 if (err)
4573                         goto out_err;
4574
4575                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4576                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4577                                        wdev->netdev, dst, next_hop,
4578                                        &pinfo) < 0)
4579                         goto out;
4580
4581                 path_idx++;
4582         }
4583
4584
4585  out:
4586         cb->args[2] = path_idx;
4587         err = skb->len;
4588  out_err:
4589         nl80211_finish_wdev_dump(rdev);
4590         return err;
4591 }
4592
4593 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4594 {
4595         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4596         int err;
4597         struct net_device *dev = info->user_ptr[1];
4598         struct mpath_info pinfo;
4599         struct sk_buff *msg;
4600         u8 *dst = NULL;
4601         u8 next_hop[ETH_ALEN];
4602
4603         memset(&pinfo, 0, sizeof(pinfo));
4604
4605         if (!info->attrs[NL80211_ATTR_MAC])
4606                 return -EINVAL;
4607
4608         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4609
4610         if (!rdev->ops->get_mpath)
4611                 return -EOPNOTSUPP;
4612
4613         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4614                 return -EOPNOTSUPP;
4615
4616         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4617         if (err)
4618                 return err;
4619
4620         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4621         if (!msg)
4622                 return -ENOMEM;
4623
4624         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4625                                  dev, dst, next_hop, &pinfo) < 0) {
4626                 nlmsg_free(msg);
4627                 return -ENOBUFS;
4628         }
4629
4630         return genlmsg_reply(msg, info);
4631 }
4632
4633 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4634 {
4635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4636         struct net_device *dev = info->user_ptr[1];
4637         u8 *dst = NULL;
4638         u8 *next_hop = NULL;
4639
4640         if (!info->attrs[NL80211_ATTR_MAC])
4641                 return -EINVAL;
4642
4643         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4644                 return -EINVAL;
4645
4646         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4647         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4648
4649         if (!rdev->ops->change_mpath)
4650                 return -EOPNOTSUPP;
4651
4652         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4653                 return -EOPNOTSUPP;
4654
4655         return rdev_change_mpath(rdev, dev, dst, next_hop);
4656 }
4657
4658 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4659 {
4660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4661         struct net_device *dev = info->user_ptr[1];
4662         u8 *dst = NULL;
4663         u8 *next_hop = NULL;
4664
4665         if (!info->attrs[NL80211_ATTR_MAC])
4666                 return -EINVAL;
4667
4668         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4669                 return -EINVAL;
4670
4671         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4672         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4673
4674         if (!rdev->ops->add_mpath)
4675                 return -EOPNOTSUPP;
4676
4677         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4678                 return -EOPNOTSUPP;
4679
4680         return rdev_add_mpath(rdev, dev, dst, next_hop);
4681 }
4682
4683 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4684 {
4685         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4686         struct net_device *dev = info->user_ptr[1];
4687         u8 *dst = NULL;
4688
4689         if (info->attrs[NL80211_ATTR_MAC])
4690                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4691
4692         if (!rdev->ops->del_mpath)
4693                 return -EOPNOTSUPP;
4694
4695         return rdev_del_mpath(rdev, dev, dst);
4696 }
4697
4698 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4699 {
4700         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4701         int err;
4702         struct net_device *dev = info->user_ptr[1];
4703         struct mpath_info pinfo;
4704         struct sk_buff *msg;
4705         u8 *dst = NULL;
4706         u8 mpp[ETH_ALEN];
4707
4708         memset(&pinfo, 0, sizeof(pinfo));
4709
4710         if (!info->attrs[NL80211_ATTR_MAC])
4711                 return -EINVAL;
4712
4713         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4714
4715         if (!rdev->ops->get_mpp)
4716                 return -EOPNOTSUPP;
4717
4718         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4719                 return -EOPNOTSUPP;
4720
4721         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4722         if (err)
4723                 return err;
4724
4725         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4726         if (!msg)
4727                 return -ENOMEM;
4728
4729         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4730                                dev, dst, mpp, &pinfo) < 0) {
4731                 nlmsg_free(msg);
4732                 return -ENOBUFS;
4733         }
4734
4735         return genlmsg_reply(msg, info);
4736 }
4737
4738 static int nl80211_dump_mpp(struct sk_buff *skb,
4739                             struct netlink_callback *cb)
4740 {
4741         struct mpath_info pinfo;
4742         struct cfg80211_registered_device *rdev;
4743         struct wireless_dev *wdev;
4744         u8 dst[ETH_ALEN];
4745         u8 mpp[ETH_ALEN];
4746         int path_idx = cb->args[2];
4747         int err;
4748
4749         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4750         if (err)
4751                 return err;
4752
4753         if (!rdev->ops->dump_mpp) {
4754                 err = -EOPNOTSUPP;
4755                 goto out_err;
4756         }
4757
4758         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4759                 err = -EOPNOTSUPP;
4760                 goto out_err;
4761         }
4762
4763         while (1) {
4764                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4765                                     mpp, &pinfo);
4766                 if (err == -ENOENT)
4767                         break;
4768                 if (err)
4769                         goto out_err;
4770
4771                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4772                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4773                                        wdev->netdev, dst, mpp,
4774                                        &pinfo) < 0)
4775                         goto out;
4776
4777                 path_idx++;
4778         }
4779
4780  out:
4781         cb->args[2] = path_idx;
4782         err = skb->len;
4783  out_err:
4784         nl80211_finish_wdev_dump(rdev);
4785         return err;
4786 }
4787
4788 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4789 {
4790         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4791         struct net_device *dev = info->user_ptr[1];
4792         struct wireless_dev *wdev = dev->ieee80211_ptr;
4793         struct bss_parameters params;
4794         int err;
4795
4796         memset(&params, 0, sizeof(params));
4797         /* default to not changing parameters */
4798         params.use_cts_prot = -1;
4799         params.use_short_preamble = -1;
4800         params.use_short_slot_time = -1;
4801         params.ap_isolate = -1;
4802         params.ht_opmode = -1;
4803         params.p2p_ctwindow = -1;
4804         params.p2p_opp_ps = -1;
4805
4806         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4807                 params.use_cts_prot =
4808                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4809         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4810                 params.use_short_preamble =
4811                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4812         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4813                 params.use_short_slot_time =
4814                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4815         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4816                 params.basic_rates =
4817                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4818                 params.basic_rates_len =
4819                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4820         }
4821         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4822                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4823         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4824                 params.ht_opmode =
4825                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4826
4827         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4828                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4829                         return -EINVAL;
4830                 params.p2p_ctwindow =
4831                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4832                 if (params.p2p_ctwindow < 0)
4833                         return -EINVAL;
4834                 if (params.p2p_ctwindow != 0 &&
4835                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4836                         return -EINVAL;
4837         }
4838
4839         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4840                 u8 tmp;
4841
4842                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4843                         return -EINVAL;
4844                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4845                 if (tmp > 1)
4846                         return -EINVAL;
4847                 params.p2p_opp_ps = tmp;
4848                 if (params.p2p_opp_ps &&
4849                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4850                         return -EINVAL;
4851         }
4852
4853         if (!rdev->ops->change_bss)
4854                 return -EOPNOTSUPP;
4855
4856         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4857             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4858                 return -EOPNOTSUPP;
4859
4860         wdev_lock(wdev);
4861         err = rdev_change_bss(rdev, dev, &params);
4862         wdev_unlock(wdev);
4863
4864         return err;
4865 }
4866
4867 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4868         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4869         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4870         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4871         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4872         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4873         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4874         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4875 };
4876
4877 static int parse_reg_rule(struct nlattr *tb[],
4878         struct ieee80211_reg_rule *reg_rule)
4879 {
4880         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4881         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4882
4883         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4884                 return -EINVAL;
4885         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4886                 return -EINVAL;
4887         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4888                 return -EINVAL;
4889         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4890                 return -EINVAL;
4891         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4892                 return -EINVAL;
4893
4894         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4895
4896         freq_range->start_freq_khz =
4897                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4898         freq_range->end_freq_khz =
4899                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4900         freq_range->max_bandwidth_khz =
4901                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4902
4903         power_rule->max_eirp =
4904                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4905
4906         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4907                 power_rule->max_antenna_gain =
4908                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4909
4910         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4911                 reg_rule->dfs_cac_ms =
4912                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4913
4914         return 0;
4915 }
4916
4917 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4918 {
4919         char *data = NULL;
4920         enum nl80211_user_reg_hint_type user_reg_hint_type;
4921
4922         /*
4923          * You should only get this when cfg80211 hasn't yet initialized
4924          * completely when built-in to the kernel right between the time
4925          * window between nl80211_init() and regulatory_init(), if that is
4926          * even possible.
4927          */
4928         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4929                 return -EINPROGRESS;
4930
4931         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4932                 user_reg_hint_type =
4933                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4934         else
4935                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4936
4937         switch (user_reg_hint_type) {
4938         case NL80211_USER_REG_HINT_USER:
4939         case NL80211_USER_REG_HINT_CELL_BASE:
4940                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4941                         return -EINVAL;
4942
4943                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4944                 return regulatory_hint_user(data, user_reg_hint_type);
4945         case NL80211_USER_REG_HINT_INDOOR:
4946                 return regulatory_hint_indoor_user();
4947         default:
4948                 return -EINVAL;
4949         }
4950 }
4951
4952 static int nl80211_get_mesh_config(struct sk_buff *skb,
4953                                    struct genl_info *info)
4954 {
4955         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4956         struct net_device *dev = info->user_ptr[1];
4957         struct wireless_dev *wdev = dev->ieee80211_ptr;
4958         struct mesh_config cur_params;
4959         int err = 0;
4960         void *hdr;
4961         struct nlattr *pinfoattr;
4962         struct sk_buff *msg;
4963
4964         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4965                 return -EOPNOTSUPP;
4966
4967         if (!rdev->ops->get_mesh_config)
4968                 return -EOPNOTSUPP;
4969
4970         wdev_lock(wdev);
4971         /* If not connected, get default parameters */
4972         if (!wdev->mesh_id_len)
4973                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4974         else
4975                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4976         wdev_unlock(wdev);
4977
4978         if (err)
4979                 return err;
4980
4981         /* Draw up a netlink message to send back */
4982         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4983         if (!msg)
4984                 return -ENOMEM;
4985         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4986                              NL80211_CMD_GET_MESH_CONFIG);
4987         if (!hdr)
4988                 goto out;
4989         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4990         if (!pinfoattr)
4991                 goto nla_put_failure;
4992         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4993             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4994                         cur_params.dot11MeshRetryTimeout) ||
4995             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4996                         cur_params.dot11MeshConfirmTimeout) ||
4997             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4998                         cur_params.dot11MeshHoldingTimeout) ||
4999             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5000                         cur_params.dot11MeshMaxPeerLinks) ||
5001             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5002                        cur_params.dot11MeshMaxRetries) ||
5003             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5004                        cur_params.dot11MeshTTL) ||
5005             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5006                        cur_params.element_ttl) ||
5007             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5008                        cur_params.auto_open_plinks) ||
5009             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5010                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5011             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5012                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5013             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5014                         cur_params.path_refresh_time) ||
5015             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5016                         cur_params.min_discovery_timeout) ||
5017             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5018                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5019             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5020                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5021             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5022                         cur_params.dot11MeshHWMPperrMinInterval) ||
5023             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5024                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5025             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5026                        cur_params.dot11MeshHWMPRootMode) ||
5027             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5028                         cur_params.dot11MeshHWMPRannInterval) ||
5029             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5030                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5031             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5032                        cur_params.dot11MeshForwarding) ||
5033             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5034                         cur_params.rssi_threshold) ||
5035             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5036                         cur_params.ht_opmode) ||
5037             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5038                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5039             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5040                         cur_params.dot11MeshHWMProotInterval) ||
5041             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5042                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5043             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5044                         cur_params.power_mode) ||
5045             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5046                         cur_params.dot11MeshAwakeWindowDuration) ||
5047             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5048                         cur_params.plink_timeout))
5049                 goto nla_put_failure;
5050         nla_nest_end(msg, pinfoattr);
5051         genlmsg_end(msg, hdr);
5052         return genlmsg_reply(msg, info);
5053
5054  nla_put_failure:
5055         genlmsg_cancel(msg, hdr);
5056  out:
5057         nlmsg_free(msg);
5058         return -ENOBUFS;
5059 }
5060
5061 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5062         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5063         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5064         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5065         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5066         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5067         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5068         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5069         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5070         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5071         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5072         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5073         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5074         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5075         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5076         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5077         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5078         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5079         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5080         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5081         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5082         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5083         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5084         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5085         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5086         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5087         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5088         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5089         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5090 };
5091
5092 static const struct nla_policy
5093         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5094         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5095         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5096         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5097         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5098         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5099         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5100         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5101                                     .len = IEEE80211_MAX_DATA_LEN },
5102         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5103 };
5104
5105 static int nl80211_parse_mesh_config(struct genl_info *info,
5106                                      struct mesh_config *cfg,
5107                                      u32 *mask_out)
5108 {
5109         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5110         u32 mask = 0;
5111
5112 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5113 do {                                                                        \
5114         if (tb[attr]) {                                                     \
5115                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5116                         return -EINVAL;                                     \
5117                 cfg->param = fn(tb[attr]);                                  \
5118                 mask |= (1 << (attr - 1));                                  \
5119         }                                                                   \
5120 } while (0)
5121
5122
5123         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5124                 return -EINVAL;
5125         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5126                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5127                              nl80211_meshconf_params_policy))
5128                 return -EINVAL;
5129
5130         /* This makes sure that there aren't more than 32 mesh config
5131          * parameters (otherwise our bitfield scheme would not work.) */
5132         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5133
5134         /* Fill in the params struct */
5135         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5136                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5137                                   nla_get_u16);
5138         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5139                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5140                                   nla_get_u16);
5141         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5142                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5143                                   nla_get_u16);
5144         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5145                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5146                                   nla_get_u16);
5147         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5148                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5149                                   nla_get_u8);
5150         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5151                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5152         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5153                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5154                                   nla_get_u8);
5155         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5156                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5157                                   nla_get_u8);
5158         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5159                                   1, 255, mask,
5160                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5161                                   nla_get_u32);
5162         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5163                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5164                                   nla_get_u8);
5165         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5166                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5167                                   nla_get_u32);
5168         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5169                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5170                                   nla_get_u16);
5171         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5172                                   1, 65535, mask,
5173                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5174                                   nla_get_u32);
5175         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5176                                   1, 65535, mask,
5177                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5178                                   nla_get_u16);
5179         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5180                                   1, 65535, mask,
5181                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5182                                   nla_get_u16);
5183         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5184                                   dot11MeshHWMPnetDiameterTraversalTime,
5185                                   1, 65535, mask,
5186                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5187                                   nla_get_u16);
5188         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5189                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5190                                   nla_get_u8);
5191         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5192                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5193                                   nla_get_u16);
5194         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5195                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5196                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5197                                   nla_get_u8);
5198         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5199                                   mask, NL80211_MESHCONF_FORWARDING,
5200                                   nla_get_u8);
5201         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5202                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5203                                   nla_get_s32);
5204         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5205                                   mask, NL80211_MESHCONF_HT_OPMODE,
5206                                   nla_get_u16);
5207         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5208                                   1, 65535, mask,
5209                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5210                                   nla_get_u32);
5211         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5212                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5213                                   nla_get_u16);
5214         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5215                                   dot11MeshHWMPconfirmationInterval,
5216                                   1, 65535, mask,
5217                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5218                                   nla_get_u16);
5219         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5220                                   NL80211_MESH_POWER_ACTIVE,
5221                                   NL80211_MESH_POWER_MAX,
5222                                   mask, NL80211_MESHCONF_POWER_MODE,
5223                                   nla_get_u32);
5224         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5225                                   0, 65535, mask,
5226                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5227         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5228                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5229                                   nla_get_u32);
5230         if (mask_out)
5231                 *mask_out = mask;
5232
5233         return 0;
5234
5235 #undef FILL_IN_MESH_PARAM_IF_SET
5236 }
5237
5238 static int nl80211_parse_mesh_setup(struct genl_info *info,
5239                                      struct mesh_setup *setup)
5240 {
5241         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5242         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5243
5244         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5245                 return -EINVAL;
5246         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5247                              info->attrs[NL80211_ATTR_MESH_SETUP],
5248                              nl80211_mesh_setup_params_policy))
5249                 return -EINVAL;
5250
5251         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5252                 setup->sync_method =
5253                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5254                  IEEE80211_SYNC_METHOD_VENDOR :
5255                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5256
5257         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5258                 setup->path_sel_proto =
5259                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5260                  IEEE80211_PATH_PROTOCOL_VENDOR :
5261                  IEEE80211_PATH_PROTOCOL_HWMP;
5262
5263         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5264                 setup->path_metric =
5265                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5266                  IEEE80211_PATH_METRIC_VENDOR :
5267                  IEEE80211_PATH_METRIC_AIRTIME;
5268
5269
5270         if (tb[NL80211_MESH_SETUP_IE]) {
5271                 struct nlattr *ieattr =
5272                         tb[NL80211_MESH_SETUP_IE];
5273                 if (!is_valid_ie_attr(ieattr))
5274                         return -EINVAL;
5275                 setup->ie = nla_data(ieattr);
5276                 setup->ie_len = nla_len(ieattr);
5277         }
5278         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5279             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5280                 return -EINVAL;
5281         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5282         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5283         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5284         if (setup->is_secure)
5285                 setup->user_mpm = true;
5286
5287         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5288                 if (!setup->user_mpm)
5289                         return -EINVAL;
5290                 setup->auth_id =
5291                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5292         }
5293
5294         return 0;
5295 }
5296
5297 static int nl80211_update_mesh_config(struct sk_buff *skb,
5298                                       struct genl_info *info)
5299 {
5300         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5301         struct net_device *dev = info->user_ptr[1];
5302         struct wireless_dev *wdev = dev->ieee80211_ptr;
5303         struct mesh_config cfg;
5304         u32 mask;
5305         int err;
5306
5307         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5308                 return -EOPNOTSUPP;
5309
5310         if (!rdev->ops->update_mesh_config)
5311                 return -EOPNOTSUPP;
5312
5313         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5314         if (err)
5315                 return err;
5316
5317         wdev_lock(wdev);
5318         if (!wdev->mesh_id_len)
5319                 err = -ENOLINK;
5320
5321         if (!err)
5322                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5323
5324         wdev_unlock(wdev);
5325
5326         return err;
5327 }
5328
5329 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5330 {
5331         const struct ieee80211_regdomain *regdom;
5332         struct sk_buff *msg;
5333         void *hdr = NULL;
5334         struct nlattr *nl_reg_rules;
5335         unsigned int i;
5336
5337         if (!cfg80211_regdomain)
5338                 return -EINVAL;
5339
5340         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5341         if (!msg)
5342                 return -ENOBUFS;
5343
5344         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5345                              NL80211_CMD_GET_REG);
5346         if (!hdr)
5347                 goto put_failure;
5348
5349         if (reg_last_request_cell_base() &&
5350             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5351                         NL80211_USER_REG_HINT_CELL_BASE))
5352                 goto nla_put_failure;
5353
5354         rcu_read_lock();
5355         regdom = rcu_dereference(cfg80211_regdomain);
5356
5357         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5358             (regdom->dfs_region &&
5359              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5360                 goto nla_put_failure_rcu;
5361
5362         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5363         if (!nl_reg_rules)
5364                 goto nla_put_failure_rcu;
5365
5366         for (i = 0; i < regdom->n_reg_rules; i++) {
5367                 struct nlattr *nl_reg_rule;
5368                 const struct ieee80211_reg_rule *reg_rule;
5369                 const struct ieee80211_freq_range *freq_range;
5370                 const struct ieee80211_power_rule *power_rule;
5371                 unsigned int max_bandwidth_khz;
5372
5373                 reg_rule = &regdom->reg_rules[i];
5374                 freq_range = &reg_rule->freq_range;
5375                 power_rule = &reg_rule->power_rule;
5376
5377                 nl_reg_rule = nla_nest_start(msg, i);
5378                 if (!nl_reg_rule)
5379                         goto nla_put_failure_rcu;
5380
5381                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5382                 if (!max_bandwidth_khz)
5383                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5384                                                                   reg_rule);
5385
5386                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5387                                 reg_rule->flags) ||
5388                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5389                                 freq_range->start_freq_khz) ||
5390                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5391                                 freq_range->end_freq_khz) ||
5392                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5393                                 max_bandwidth_khz) ||
5394                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5395                                 power_rule->max_antenna_gain) ||
5396                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5397                                 power_rule->max_eirp) ||
5398                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5399                                 reg_rule->dfs_cac_ms))
5400                         goto nla_put_failure_rcu;
5401
5402                 nla_nest_end(msg, nl_reg_rule);
5403         }
5404         rcu_read_unlock();
5405
5406         nla_nest_end(msg, nl_reg_rules);
5407
5408         genlmsg_end(msg, hdr);
5409         return genlmsg_reply(msg, info);
5410
5411 nla_put_failure_rcu:
5412         rcu_read_unlock();
5413 nla_put_failure:
5414         genlmsg_cancel(msg, hdr);
5415 put_failure:
5416         nlmsg_free(msg);
5417         return -EMSGSIZE;
5418 }
5419
5420 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5421 {
5422         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5423         struct nlattr *nl_reg_rule;
5424         char *alpha2;
5425         int rem_reg_rules, r;
5426         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5427         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5428         struct ieee80211_regdomain *rd;
5429
5430         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5431                 return -EINVAL;
5432
5433         if (!info->attrs[NL80211_ATTR_REG_RULES])
5434                 return -EINVAL;
5435
5436         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5437
5438         if (info->attrs[NL80211_ATTR_DFS_REGION])
5439                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5440
5441         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5442                             rem_reg_rules) {
5443                 num_rules++;
5444                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5445                         return -EINVAL;
5446         }
5447
5448         if (!reg_is_valid_request(alpha2))
5449                 return -EINVAL;
5450
5451         size_of_regd = sizeof(struct ieee80211_regdomain) +
5452                        num_rules * sizeof(struct ieee80211_reg_rule);
5453
5454         rd = kzalloc(size_of_regd, GFP_KERNEL);
5455         if (!rd)
5456                 return -ENOMEM;
5457
5458         rd->n_reg_rules = num_rules;
5459         rd->alpha2[0] = alpha2[0];
5460         rd->alpha2[1] = alpha2[1];
5461
5462         /*
5463          * Disable DFS master mode if the DFS region was
5464          * not supported or known on this kernel.
5465          */
5466         if (reg_supported_dfs_region(dfs_region))
5467                 rd->dfs_region = dfs_region;
5468
5469         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5470                             rem_reg_rules) {
5471                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5472                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5473                               reg_rule_policy);
5474                 if (r)
5475                         goto bad_reg;
5476                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5477                 if (r)
5478                         goto bad_reg;
5479
5480                 rule_idx++;
5481
5482                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5483                         r = -EINVAL;
5484                         goto bad_reg;
5485                 }
5486         }
5487
5488         r = set_regdom(rd);
5489         /* set_regdom took ownership */
5490         rd = NULL;
5491
5492  bad_reg:
5493         kfree(rd);
5494         return r;
5495 }
5496
5497 static int validate_scan_freqs(struct nlattr *freqs)
5498 {
5499         struct nlattr *attr1, *attr2;
5500         int n_channels = 0, tmp1, tmp2;
5501
5502         nla_for_each_nested(attr1, freqs, tmp1) {
5503                 n_channels++;
5504                 /*
5505                  * Some hardware has a limited channel list for
5506                  * scanning, and it is pretty much nonsensical
5507                  * to scan for a channel twice, so disallow that
5508                  * and don't require drivers to check that the
5509                  * channel list they get isn't longer than what
5510                  * they can scan, as long as they can scan all
5511                  * the channels they registered at once.
5512                  */
5513                 nla_for_each_nested(attr2, freqs, tmp2)
5514                         if (attr1 != attr2 &&
5515                             nla_get_u32(attr1) == nla_get_u32(attr2))
5516                                 return 0;
5517         }
5518
5519         return n_channels;
5520 }
5521
5522 static int nl80211_parse_random_mac(struct nlattr **attrs,
5523                                     u8 *mac_addr, u8 *mac_addr_mask)
5524 {
5525         int i;
5526
5527         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5528                 memset(mac_addr, 0, ETH_ALEN);
5529                 memset(mac_addr_mask, 0, ETH_ALEN);
5530                 mac_addr[0] = 0x2;
5531                 mac_addr_mask[0] = 0x3;
5532
5533                 return 0;
5534         }
5535
5536         /* need both or none */
5537         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5538                 return -EINVAL;
5539
5540         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5541         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5542
5543         /* don't allow or configure an mcast address */
5544         if (!is_multicast_ether_addr(mac_addr_mask) ||
5545             is_multicast_ether_addr(mac_addr))
5546                 return -EINVAL;
5547
5548         /*
5549          * allow users to pass a MAC address that has bits set outside
5550          * of the mask, but don't bother drivers with having to deal
5551          * with such bits
5552          */
5553         for (i = 0; i < ETH_ALEN; i++)
5554                 mac_addr[i] &= mac_addr_mask[i];
5555
5556         return 0;
5557 }
5558
5559 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5560 {
5561         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5562         struct wireless_dev *wdev = info->user_ptr[1];
5563         struct cfg80211_scan_request *request;
5564         struct nlattr *attr;
5565         struct wiphy *wiphy;
5566         int err, tmp, n_ssids = 0, n_channels, i;
5567         size_t ie_len;
5568
5569         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5570                 return -EINVAL;
5571
5572         wiphy = &rdev->wiphy;
5573
5574         if (!rdev->ops->scan)
5575                 return -EOPNOTSUPP;
5576
5577         if (rdev->scan_req || rdev->scan_msg) {
5578                 err = -EBUSY;
5579                 goto unlock;
5580         }
5581
5582         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5583                 n_channels = validate_scan_freqs(
5584                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5585                 if (!n_channels) {
5586                         err = -EINVAL;
5587                         goto unlock;
5588                 }
5589         } else {
5590                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5591         }
5592
5593         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5594                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5595                         n_ssids++;
5596
5597         if (n_ssids > wiphy->max_scan_ssids) {
5598                 err = -EINVAL;
5599                 goto unlock;
5600         }
5601
5602         if (info->attrs[NL80211_ATTR_IE])
5603                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5604         else
5605                 ie_len = 0;
5606
5607         if (ie_len > wiphy->max_scan_ie_len) {
5608                 err = -EINVAL;
5609                 goto unlock;
5610         }
5611
5612         request = kzalloc(sizeof(*request)
5613                         + sizeof(*request->ssids) * n_ssids
5614                         + sizeof(*request->channels) * n_channels
5615                         + ie_len, GFP_KERNEL);
5616         if (!request) {
5617                 err = -ENOMEM;
5618                 goto unlock;
5619         }
5620
5621         if (n_ssids)
5622                 request->ssids = (void *)&request->channels[n_channels];
5623         request->n_ssids = n_ssids;
5624         if (ie_len) {
5625                 if (request->ssids)
5626                         request->ie = (void *)(request->ssids + n_ssids);
5627                 else
5628                         request->ie = (void *)(request->channels + n_channels);
5629         }
5630
5631         i = 0;
5632         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5633                 /* user specified, bail out if channel not found */
5634                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5635                         struct ieee80211_channel *chan;
5636
5637                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5638
5639                         if (!chan) {
5640                                 err = -EINVAL;
5641                                 goto out_free;
5642                         }
5643
5644                         /* ignore disabled channels */
5645                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5646                                 continue;
5647
5648                         request->channels[i] = chan;
5649                         i++;
5650                 }
5651         } else {
5652                 enum ieee80211_band band;
5653
5654                 /* all channels */
5655                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5656                         int j;
5657                         if (!wiphy->bands[band])
5658                                 continue;
5659                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5660                                 struct ieee80211_channel *chan;
5661
5662                                 chan = &wiphy->bands[band]->channels[j];
5663
5664                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5665                                         continue;
5666
5667                                 request->channels[i] = chan;
5668                                 i++;
5669                         }
5670                 }
5671         }
5672
5673         if (!i) {
5674                 err = -EINVAL;
5675                 goto out_free;
5676         }
5677
5678         request->n_channels = i;
5679
5680         i = 0;
5681         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5682                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5683                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5684                                 err = -EINVAL;
5685                                 goto out_free;
5686                         }
5687                         request->ssids[i].ssid_len = nla_len(attr);
5688                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5689                         i++;
5690                 }
5691         }
5692
5693         if (info->attrs[NL80211_ATTR_IE]) {
5694                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5695                 memcpy((void *)request->ie,
5696                        nla_data(info->attrs[NL80211_ATTR_IE]),
5697                        request->ie_len);
5698         }
5699
5700         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5701                 if (wiphy->bands[i])
5702                         request->rates[i] =
5703                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5704
5705         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5706                 nla_for_each_nested(attr,
5707                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5708                                     tmp) {
5709                         enum ieee80211_band band = nla_type(attr);
5710
5711                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5712                                 err = -EINVAL;
5713                                 goto out_free;
5714                         }
5715
5716                         if (!wiphy->bands[band])
5717                                 continue;
5718
5719                         err = ieee80211_get_ratemask(wiphy->bands[band],
5720                                                      nla_data(attr),
5721                                                      nla_len(attr),
5722                                                      &request->rates[band]);
5723                         if (err)
5724                                 goto out_free;
5725                 }
5726         }
5727
5728         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5729                 request->flags = nla_get_u32(
5730                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5731                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5732                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5733                         err = -EOPNOTSUPP;
5734                         goto out_free;
5735                 }
5736
5737                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5738                         if (!(wiphy->features &
5739                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5740                                 err = -EOPNOTSUPP;
5741                                 goto out_free;
5742                         }
5743
5744                         if (wdev->current_bss) {
5745                                 err = -EOPNOTSUPP;
5746                                 goto out_free;
5747                         }
5748
5749                         err = nl80211_parse_random_mac(info->attrs,
5750                                                        request->mac_addr,
5751                                                        request->mac_addr_mask);
5752                         if (err)
5753                                 goto out_free;
5754                 }
5755         }
5756
5757         request->no_cck =
5758                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5759
5760         request->wdev = wdev;
5761         request->wiphy = &rdev->wiphy;
5762         request->scan_start = jiffies;
5763
5764         rdev->scan_req = request;
5765         err = rdev_scan(rdev, request);
5766
5767         if (!err) {
5768                 nl80211_send_scan_start(rdev, wdev);
5769                 if (wdev->netdev)
5770                         dev_hold(wdev->netdev);
5771         } else {
5772  out_free:
5773                 rdev->scan_req = NULL;
5774                 kfree(request);
5775         }
5776
5777  unlock:
5778         return err;
5779 }
5780
5781 static struct cfg80211_sched_scan_request *
5782 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5783                          struct nlattr **attrs)
5784 {
5785         struct cfg80211_sched_scan_request *request;
5786         struct nlattr *attr;
5787         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5788         u32 interval;
5789         enum ieee80211_band band;
5790         size_t ie_len;
5791         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5792         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5793
5794         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5795                 return ERR_PTR(-EINVAL);
5796
5797         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5798                 return ERR_PTR(-EINVAL);
5799
5800         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5801         if (interval == 0)
5802                 return ERR_PTR(-EINVAL);
5803
5804         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5805                 n_channels = validate_scan_freqs(
5806                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5807                 if (!n_channels)
5808                         return ERR_PTR(-EINVAL);
5809         } else {
5810                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5811         }
5812
5813         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5814                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5815                                     tmp)
5816                         n_ssids++;
5817
5818         if (n_ssids > wiphy->max_sched_scan_ssids)
5819                 return ERR_PTR(-EINVAL);
5820
5821         /*
5822          * First, count the number of 'real' matchsets. Due to an issue with
5823          * the old implementation, matchsets containing only the RSSI attribute
5824          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5825          * RSSI for all matchsets, rather than their own matchset for reporting
5826          * all APs with a strong RSSI. This is needed to be compatible with
5827          * older userspace that treated a matchset with only the RSSI as the
5828          * global RSSI for all other matchsets - if there are other matchsets.
5829          */
5830         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5831                 nla_for_each_nested(attr,
5832                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5833                                     tmp) {
5834                         struct nlattr *rssi;
5835
5836                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5837                                         nla_data(attr), nla_len(attr),
5838                                         nl80211_match_policy);
5839                         if (err)
5840                                 return ERR_PTR(err);
5841                         /* add other standalone attributes here */
5842                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5843                                 n_match_sets++;
5844                                 continue;
5845                         }
5846                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5847                         if (rssi)
5848                                 default_match_rssi = nla_get_s32(rssi);
5849                 }
5850         }
5851
5852         /* However, if there's no other matchset, add the RSSI one */
5853         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5854                 n_match_sets = 1;
5855
5856         if (n_match_sets > wiphy->max_match_sets)
5857                 return ERR_PTR(-EINVAL);
5858
5859         if (attrs[NL80211_ATTR_IE])
5860                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
5861         else
5862                 ie_len = 0;
5863
5864         if (ie_len > wiphy->max_sched_scan_ie_len)
5865                 return ERR_PTR(-EINVAL);
5866
5867         request = kzalloc(sizeof(*request)
5868                         + sizeof(*request->ssids) * n_ssids
5869                         + sizeof(*request->match_sets) * n_match_sets
5870                         + sizeof(*request->channels) * n_channels
5871                         + ie_len, GFP_KERNEL);
5872         if (!request)
5873                 return ERR_PTR(-ENOMEM);
5874
5875         if (n_ssids)
5876                 request->ssids = (void *)&request->channels[n_channels];
5877         request->n_ssids = n_ssids;
5878         if (ie_len) {
5879                 if (request->ssids)
5880                         request->ie = (void *)(request->ssids + n_ssids);
5881                 else
5882                         request->ie = (void *)(request->channels + n_channels);
5883         }
5884
5885         if (n_match_sets) {
5886                 if (request->ie)
5887                         request->match_sets = (void *)(request->ie + ie_len);
5888                 else if (request->ssids)
5889                         request->match_sets =
5890                                 (void *)(request->ssids + n_ssids);
5891                 else
5892                         request->match_sets =
5893                                 (void *)(request->channels + n_channels);
5894         }
5895         request->n_match_sets = n_match_sets;
5896
5897         i = 0;
5898         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5899                 /* user specified, bail out if channel not found */
5900                 nla_for_each_nested(attr,
5901                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5902                                     tmp) {
5903                         struct ieee80211_channel *chan;
5904
5905                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5906
5907                         if (!chan) {
5908                                 err = -EINVAL;
5909                                 goto out_free;
5910                         }
5911
5912                         /* ignore disabled channels */
5913                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5914                                 continue;
5915
5916                         request->channels[i] = chan;
5917                         i++;
5918                 }
5919         } else {
5920                 /* all channels */
5921                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5922                         int j;
5923                         if (!wiphy->bands[band])
5924                                 continue;
5925                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5926                                 struct ieee80211_channel *chan;
5927
5928                                 chan = &wiphy->bands[band]->channels[j];
5929
5930                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5931                                         continue;
5932
5933                                 request->channels[i] = chan;
5934                                 i++;
5935                         }
5936                 }
5937         }
5938
5939         if (!i) {
5940                 err = -EINVAL;
5941                 goto out_free;
5942         }
5943
5944         request->n_channels = i;
5945
5946         i = 0;
5947         if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
5948                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5949                                     tmp) {
5950                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5951                                 err = -EINVAL;
5952                                 goto out_free;
5953                         }
5954                         request->ssids[i].ssid_len = nla_len(attr);
5955                         memcpy(request->ssids[i].ssid, nla_data(attr),
5956                                nla_len(attr));
5957                         i++;
5958                 }
5959         }
5960
5961         i = 0;
5962         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5963                 nla_for_each_nested(attr,
5964                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5965                                     tmp) {
5966                         struct nlattr *ssid, *rssi;
5967
5968                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5969                                         nla_data(attr), nla_len(attr),
5970                                         nl80211_match_policy);
5971                         if (err)
5972                                 goto out_free;
5973                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5974                         if (ssid) {
5975                                 if (WARN_ON(i >= n_match_sets)) {
5976                                         /* this indicates a programming error,
5977                                          * the loop above should have verified
5978                                          * things properly
5979                                          */
5980                                         err = -EINVAL;
5981                                         goto out_free;
5982                                 }
5983
5984                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5985                                         err = -EINVAL;
5986                                         goto out_free;
5987                                 }
5988                                 memcpy(request->match_sets[i].ssid.ssid,
5989                                        nla_data(ssid), nla_len(ssid));
5990                                 request->match_sets[i].ssid.ssid_len =
5991                                         nla_len(ssid);
5992                                 /* special attribute - old implemenation w/a */
5993                                 request->match_sets[i].rssi_thold =
5994                                         default_match_rssi;
5995                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5996                                 if (rssi)
5997                                         request->match_sets[i].rssi_thold =
5998                                                 nla_get_s32(rssi);
5999                         }
6000                         i++;
6001                 }
6002
6003                 /* there was no other matchset, so the RSSI one is alone */
6004                 if (i == 0 && n_match_sets)
6005                         request->match_sets[0].rssi_thold = default_match_rssi;
6006
6007                 request->min_rssi_thold = INT_MAX;
6008                 for (i = 0; i < n_match_sets; i++)
6009                         request->min_rssi_thold =
6010                                 min(request->match_sets[i].rssi_thold,
6011                                     request->min_rssi_thold);
6012         } else {
6013                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6014         }
6015
6016         if (ie_len) {
6017                 request->ie_len = ie_len;
6018                 memcpy((void *)request->ie,
6019                        nla_data(attrs[NL80211_ATTR_IE]),
6020                        request->ie_len);
6021         }
6022
6023         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6024                 request->flags = nla_get_u32(
6025                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6026                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6027                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6028                         err = -EOPNOTSUPP;
6029                         goto out_free;
6030                 }
6031
6032                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6033                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6034
6035                         if (!wdev) /* must be net-detect */
6036                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6037
6038                         if (!(wiphy->features & flg)) {
6039                                 err = -EOPNOTSUPP;
6040                                 goto out_free;
6041                         }
6042
6043                         if (wdev && wdev->current_bss) {
6044                                 err = -EOPNOTSUPP;
6045                                 goto out_free;
6046                         }
6047
6048                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6049                                                        request->mac_addr_mask);
6050                         if (err)
6051                                 goto out_free;
6052                 }
6053         }
6054
6055         request->interval = interval;
6056         request->scan_start = jiffies;
6057
6058         return request;
6059
6060 out_free:
6061         kfree(request);
6062         return ERR_PTR(err);
6063 }
6064
6065 static int nl80211_start_sched_scan(struct sk_buff *skb,
6066                                     struct genl_info *info)
6067 {
6068         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6069         struct net_device *dev = info->user_ptr[1];
6070         struct wireless_dev *wdev = dev->ieee80211_ptr;
6071         int err;
6072
6073         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6074             !rdev->ops->sched_scan_start)
6075                 return -EOPNOTSUPP;
6076
6077         if (rdev->sched_scan_req)
6078                 return -EINPROGRESS;
6079
6080         rdev->sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6081                                                         info->attrs);
6082         err = PTR_ERR_OR_ZERO(rdev->sched_scan_req);
6083         if (err)
6084                 goto out_err;
6085
6086         err = rdev_sched_scan_start(rdev, dev, rdev->sched_scan_req);
6087         if (err)
6088                 goto out_free;
6089
6090         rdev->sched_scan_req->dev = dev;
6091         rdev->sched_scan_req->wiphy = &rdev->wiphy;
6092
6093         nl80211_send_sched_scan(rdev, dev,
6094                                 NL80211_CMD_START_SCHED_SCAN);
6095         return 0;
6096
6097 out_free:
6098         kfree(rdev->sched_scan_req);
6099 out_err:
6100         rdev->sched_scan_req = NULL;
6101         return err;
6102 }
6103
6104 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6105                                    struct genl_info *info)
6106 {
6107         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6108
6109         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6110             !rdev->ops->sched_scan_stop)
6111                 return -EOPNOTSUPP;
6112
6113         return __cfg80211_stop_sched_scan(rdev, false);
6114 }
6115
6116 static int nl80211_start_radar_detection(struct sk_buff *skb,
6117                                          struct genl_info *info)
6118 {
6119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6120         struct net_device *dev = info->user_ptr[1];
6121         struct wireless_dev *wdev = dev->ieee80211_ptr;
6122         struct cfg80211_chan_def chandef;
6123         enum nl80211_dfs_regions dfs_region;
6124         unsigned int cac_time_ms;
6125         int err;
6126
6127         dfs_region = reg_get_dfs_region(wdev->wiphy);
6128         if (dfs_region == NL80211_DFS_UNSET)
6129                 return -EINVAL;
6130
6131         err = nl80211_parse_chandef(rdev, info, &chandef);
6132         if (err)
6133                 return err;
6134
6135         if (netif_carrier_ok(dev))
6136                 return -EBUSY;
6137
6138         if (wdev->cac_started)
6139                 return -EBUSY;
6140
6141         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6142                                             wdev->iftype);
6143         if (err < 0)
6144                 return err;
6145
6146         if (err == 0)
6147                 return -EINVAL;
6148
6149         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6150                 return -EINVAL;
6151
6152         if (!rdev->ops->start_radar_detection)
6153                 return -EOPNOTSUPP;
6154
6155         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6156         if (WARN_ON(!cac_time_ms))
6157                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6158
6159         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6160                                                cac_time_ms);
6161         if (!err) {
6162                 wdev->chandef = chandef;
6163                 wdev->cac_started = true;
6164                 wdev->cac_start_time = jiffies;
6165                 wdev->cac_time_ms = cac_time_ms;
6166         }
6167         return err;
6168 }
6169
6170 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6171 {
6172         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6173         struct net_device *dev = info->user_ptr[1];
6174         struct wireless_dev *wdev = dev->ieee80211_ptr;
6175         struct cfg80211_csa_settings params;
6176         /* csa_attrs is defined static to avoid waste of stack size - this
6177          * function is called under RTNL lock, so this should not be a problem.
6178          */
6179         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6180         int err;
6181         bool need_new_beacon = false;
6182         int len, i;
6183         u32 cs_count;
6184
6185         if (!rdev->ops->channel_switch ||
6186             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6187                 return -EOPNOTSUPP;
6188
6189         switch (dev->ieee80211_ptr->iftype) {
6190         case NL80211_IFTYPE_AP:
6191         case NL80211_IFTYPE_P2P_GO:
6192                 need_new_beacon = true;
6193
6194                 /* useless if AP is not running */
6195                 if (!wdev->beacon_interval)
6196                         return -ENOTCONN;
6197                 break;
6198         case NL80211_IFTYPE_ADHOC:
6199                 if (!wdev->ssid_len)
6200                         return -ENOTCONN;
6201                 break;
6202         case NL80211_IFTYPE_MESH_POINT:
6203                 if (!wdev->mesh_id_len)
6204                         return -ENOTCONN;
6205                 break;
6206         default:
6207                 return -EOPNOTSUPP;
6208         }
6209
6210         memset(&params, 0, sizeof(params));
6211
6212         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6213             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6214                 return -EINVAL;
6215
6216         /* only important for AP, IBSS and mesh create IEs internally */
6217         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6218                 return -EINVAL;
6219
6220         /* Even though the attribute is u32, the specification says
6221          * u8, so let's make sure we don't overflow.
6222          */
6223         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6224         if (cs_count > 255)
6225                 return -EINVAL;
6226
6227         params.count = cs_count;
6228
6229         if (!need_new_beacon)
6230                 goto skip_beacons;
6231
6232         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6233         if (err)
6234                 return err;
6235
6236         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6237                                info->attrs[NL80211_ATTR_CSA_IES],
6238                                nl80211_policy);
6239         if (err)
6240                 return err;
6241
6242         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6243         if (err)
6244                 return err;
6245
6246         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6247                 return -EINVAL;
6248
6249         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6250         if (!len || (len % sizeof(u16)))
6251                 return -EINVAL;
6252
6253         params.n_counter_offsets_beacon = len / sizeof(u16);
6254         if (rdev->wiphy.max_num_csa_counters &&
6255             (params.n_counter_offsets_beacon >
6256              rdev->wiphy.max_num_csa_counters))
6257                 return -EINVAL;
6258
6259         params.counter_offsets_beacon =
6260                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6261
6262         /* sanity checks - counters should fit and be the same */
6263         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6264                 u16 offset = params.counter_offsets_beacon[i];
6265
6266                 if (offset >= params.beacon_csa.tail_len)
6267                         return -EINVAL;
6268
6269                 if (params.beacon_csa.tail[offset] != params.count)
6270                         return -EINVAL;
6271         }
6272
6273         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6274                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6275                 if (!len || (len % sizeof(u16)))
6276                         return -EINVAL;
6277
6278                 params.n_counter_offsets_presp = len / sizeof(u16);
6279                 if (rdev->wiphy.max_num_csa_counters &&
6280                     (params.n_counter_offsets_beacon >
6281                      rdev->wiphy.max_num_csa_counters))
6282                         return -EINVAL;
6283
6284                 params.counter_offsets_presp =
6285                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6286
6287                 /* sanity checks - counters should fit and be the same */
6288                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6289                         u16 offset = params.counter_offsets_presp[i];
6290
6291                         if (offset >= params.beacon_csa.probe_resp_len)
6292                                 return -EINVAL;
6293
6294                         if (params.beacon_csa.probe_resp[offset] !=
6295                             params.count)
6296                                 return -EINVAL;
6297                 }
6298         }
6299
6300 skip_beacons:
6301         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6302         if (err)
6303                 return err;
6304
6305         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6306                                      wdev->iftype))
6307                 return -EINVAL;
6308
6309         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6310                                             &params.chandef,
6311                                             wdev->iftype);
6312         if (err < 0)
6313                 return err;
6314
6315         if (err > 0)
6316                 params.radar_required = true;
6317
6318         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6319                 params.block_tx = true;
6320
6321         wdev_lock(wdev);
6322         err = rdev_channel_switch(rdev, dev, &params);
6323         wdev_unlock(wdev);
6324
6325         return err;
6326 }
6327
6328 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6329                             u32 seq, int flags,
6330                             struct cfg80211_registered_device *rdev,
6331                             struct wireless_dev *wdev,
6332                             struct cfg80211_internal_bss *intbss)
6333 {
6334         struct cfg80211_bss *res = &intbss->pub;
6335         const struct cfg80211_bss_ies *ies;
6336         void *hdr;
6337         struct nlattr *bss;
6338
6339         ASSERT_WDEV_LOCK(wdev);
6340
6341         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6342                              NL80211_CMD_NEW_SCAN_RESULTS);
6343         if (!hdr)
6344                 return -1;
6345
6346         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6347
6348         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6349                 goto nla_put_failure;
6350         if (wdev->netdev &&
6351             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6352                 goto nla_put_failure;
6353         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6354                 goto nla_put_failure;
6355
6356         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6357         if (!bss)
6358                 goto nla_put_failure;
6359         if ((!is_zero_ether_addr(res->bssid) &&
6360              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6361                 goto nla_put_failure;
6362
6363         rcu_read_lock();
6364         /* indicate whether we have probe response data or not */
6365         if (rcu_access_pointer(res->proberesp_ies) &&
6366             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6367                 goto fail_unlock_rcu;
6368
6369         /* this pointer prefers to be pointed to probe response data
6370          * but is always valid
6371          */
6372         ies = rcu_dereference(res->ies);
6373         if (ies) {
6374                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6375                         goto fail_unlock_rcu;
6376                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6377                                         ies->len, ies->data))
6378                         goto fail_unlock_rcu;
6379         }
6380
6381         /* and this pointer is always (unless driver didn't know) beacon data */
6382         ies = rcu_dereference(res->beacon_ies);
6383         if (ies && ies->from_beacon) {
6384                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6385                         goto fail_unlock_rcu;
6386                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6387                                         ies->len, ies->data))
6388                         goto fail_unlock_rcu;
6389         }
6390         rcu_read_unlock();
6391
6392         if (res->beacon_interval &&
6393             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6394                 goto nla_put_failure;
6395         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6396             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6397             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6398             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6399                         jiffies_to_msecs(jiffies - intbss->ts)))
6400                 goto nla_put_failure;
6401
6402         switch (rdev->wiphy.signal_type) {
6403         case CFG80211_SIGNAL_TYPE_MBM:
6404                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6405                         goto nla_put_failure;
6406                 break;
6407         case CFG80211_SIGNAL_TYPE_UNSPEC:
6408                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6409                         goto nla_put_failure;
6410                 break;
6411         default:
6412                 break;
6413         }
6414
6415         switch (wdev->iftype) {
6416         case NL80211_IFTYPE_P2P_CLIENT:
6417         case NL80211_IFTYPE_STATION:
6418                 if (intbss == wdev->current_bss &&
6419                     nla_put_u32(msg, NL80211_BSS_STATUS,
6420                                 NL80211_BSS_STATUS_ASSOCIATED))
6421                         goto nla_put_failure;
6422                 break;
6423         case NL80211_IFTYPE_ADHOC:
6424                 if (intbss == wdev->current_bss &&
6425                     nla_put_u32(msg, NL80211_BSS_STATUS,
6426                                 NL80211_BSS_STATUS_IBSS_JOINED))
6427                         goto nla_put_failure;
6428                 break;
6429         default:
6430                 break;
6431         }
6432
6433         nla_nest_end(msg, bss);
6434
6435         return genlmsg_end(msg, hdr);
6436
6437  fail_unlock_rcu:
6438         rcu_read_unlock();
6439  nla_put_failure:
6440         genlmsg_cancel(msg, hdr);
6441         return -EMSGSIZE;
6442 }
6443
6444 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6445 {
6446         struct cfg80211_registered_device *rdev;
6447         struct cfg80211_internal_bss *scan;
6448         struct wireless_dev *wdev;
6449         int start = cb->args[2], idx = 0;
6450         int err;
6451
6452         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6453         if (err)
6454                 return err;
6455
6456         wdev_lock(wdev);
6457         spin_lock_bh(&rdev->bss_lock);
6458         cfg80211_bss_expire(rdev);
6459
6460         cb->seq = rdev->bss_generation;
6461
6462         list_for_each_entry(scan, &rdev->bss_list, list) {
6463                 if (++idx <= start)
6464                         continue;
6465                 if (nl80211_send_bss(skb, cb,
6466                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6467                                 rdev, wdev, scan) < 0) {
6468                         idx--;
6469                         break;
6470                 }
6471         }
6472
6473         spin_unlock_bh(&rdev->bss_lock);
6474         wdev_unlock(wdev);
6475
6476         cb->args[2] = idx;
6477         nl80211_finish_wdev_dump(rdev);
6478
6479         return skb->len;
6480 }
6481
6482 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6483                                 int flags, struct net_device *dev,
6484                                 struct survey_info *survey)
6485 {
6486         void *hdr;
6487         struct nlattr *infoattr;
6488
6489         hdr = nl80211hdr_put(msg, portid, seq, flags,
6490                              NL80211_CMD_NEW_SURVEY_RESULTS);
6491         if (!hdr)
6492                 return -ENOMEM;
6493
6494         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6495                 goto nla_put_failure;
6496
6497         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6498         if (!infoattr)
6499                 goto nla_put_failure;
6500
6501         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6502                         survey->channel->center_freq))
6503                 goto nla_put_failure;
6504
6505         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6506             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6507                 goto nla_put_failure;
6508         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6509             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6510                 goto nla_put_failure;
6511         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6512             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6513                         survey->channel_time))
6514                 goto nla_put_failure;
6515         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6516             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6517                         survey->channel_time_busy))
6518                 goto nla_put_failure;
6519         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6520             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6521                         survey->channel_time_ext_busy))
6522                 goto nla_put_failure;
6523         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6524             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6525                         survey->channel_time_rx))
6526                 goto nla_put_failure;
6527         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6528             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6529                         survey->channel_time_tx))
6530                 goto nla_put_failure;
6531
6532         nla_nest_end(msg, infoattr);
6533
6534         return genlmsg_end(msg, hdr);
6535
6536  nla_put_failure:
6537         genlmsg_cancel(msg, hdr);
6538         return -EMSGSIZE;
6539 }
6540
6541 static int nl80211_dump_survey(struct sk_buff *skb,
6542                         struct netlink_callback *cb)
6543 {
6544         struct survey_info survey;
6545         struct cfg80211_registered_device *rdev;
6546         struct wireless_dev *wdev;
6547         int survey_idx = cb->args[2];
6548         int res;
6549
6550         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6551         if (res)
6552                 return res;
6553
6554         if (!wdev->netdev) {
6555                 res = -EINVAL;
6556                 goto out_err;
6557         }
6558
6559         if (!rdev->ops->dump_survey) {
6560                 res = -EOPNOTSUPP;
6561                 goto out_err;
6562         }
6563
6564         while (1) {
6565                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6566                 if (res == -ENOENT)
6567                         break;
6568                 if (res)
6569                         goto out_err;
6570
6571                 /* Survey without a channel doesn't make sense */
6572                 if (!survey.channel) {
6573                         res = -EINVAL;
6574                         goto out;
6575                 }
6576
6577                 if (survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6578                         survey_idx++;
6579                         continue;
6580                 }
6581
6582                 if (nl80211_send_survey(skb,
6583                                 NETLINK_CB(cb->skb).portid,
6584                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6585                                 wdev->netdev, &survey) < 0)
6586                         goto out;
6587                 survey_idx++;
6588         }
6589
6590  out:
6591         cb->args[2] = survey_idx;
6592         res = skb->len;
6593  out_err:
6594         nl80211_finish_wdev_dump(rdev);
6595         return res;
6596 }
6597
6598 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6599 {
6600         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6601                                   NL80211_WPA_VERSION_2));
6602 }
6603
6604 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6605 {
6606         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6607         struct net_device *dev = info->user_ptr[1];
6608         struct ieee80211_channel *chan;
6609         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6610         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6611         enum nl80211_auth_type auth_type;
6612         struct key_parse key;
6613         bool local_state_change;
6614
6615         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6616                 return -EINVAL;
6617
6618         if (!info->attrs[NL80211_ATTR_MAC])
6619                 return -EINVAL;
6620
6621         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6622                 return -EINVAL;
6623
6624         if (!info->attrs[NL80211_ATTR_SSID])
6625                 return -EINVAL;
6626
6627         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6628                 return -EINVAL;
6629
6630         err = nl80211_parse_key(info, &key);
6631         if (err)
6632                 return err;
6633
6634         if (key.idx >= 0) {
6635                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6636                         return -EINVAL;
6637                 if (!key.p.key || !key.p.key_len)
6638                         return -EINVAL;
6639                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6640                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6641                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6642                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6643                         return -EINVAL;
6644                 if (key.idx > 4)
6645                         return -EINVAL;
6646         } else {
6647                 key.p.key_len = 0;
6648                 key.p.key = NULL;
6649         }
6650
6651         if (key.idx >= 0) {
6652                 int i;
6653                 bool ok = false;
6654                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6655                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6656                                 ok = true;
6657                                 break;
6658                         }
6659                 }
6660                 if (!ok)
6661                         return -EINVAL;
6662         }
6663
6664         if (!rdev->ops->auth)
6665                 return -EOPNOTSUPP;
6666
6667         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6668             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6669                 return -EOPNOTSUPP;
6670
6671         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6672         chan = nl80211_get_valid_chan(&rdev->wiphy,
6673                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6674         if (!chan)
6675                 return -EINVAL;
6676
6677         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6678         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6679
6680         if (info->attrs[NL80211_ATTR_IE]) {
6681                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6682                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6683         }
6684
6685         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6686         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6687                 return -EINVAL;
6688
6689         if (auth_type == NL80211_AUTHTYPE_SAE &&
6690             !info->attrs[NL80211_ATTR_SAE_DATA])
6691                 return -EINVAL;
6692
6693         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6694                 if (auth_type != NL80211_AUTHTYPE_SAE)
6695                         return -EINVAL;
6696                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6697                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6698                 /* need to include at least Auth Transaction and Status Code */
6699                 if (sae_data_len < 4)
6700                         return -EINVAL;
6701         }
6702
6703         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6704
6705         /*
6706          * Since we no longer track auth state, ignore
6707          * requests to only change local state.
6708          */
6709         if (local_state_change)
6710                 return 0;
6711
6712         wdev_lock(dev->ieee80211_ptr);
6713         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6714                                  ssid, ssid_len, ie, ie_len,
6715                                  key.p.key, key.p.key_len, key.idx,
6716                                  sae_data, sae_data_len);
6717         wdev_unlock(dev->ieee80211_ptr);
6718         return err;
6719 }
6720
6721 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6722                                    struct genl_info *info,
6723                                    struct cfg80211_crypto_settings *settings,
6724                                    int cipher_limit)
6725 {
6726         memset(settings, 0, sizeof(*settings));
6727
6728         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6729
6730         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6731                 u16 proto;
6732                 proto = nla_get_u16(
6733                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6734                 settings->control_port_ethertype = cpu_to_be16(proto);
6735                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6736                     proto != ETH_P_PAE)
6737                         return -EINVAL;
6738                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6739                         settings->control_port_no_encrypt = true;
6740         } else
6741                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6742
6743         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6744                 void *data;
6745                 int len, i;
6746
6747                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6748                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6749                 settings->n_ciphers_pairwise = len / sizeof(u32);
6750
6751                 if (len % sizeof(u32))
6752                         return -EINVAL;
6753
6754                 if (settings->n_ciphers_pairwise > cipher_limit)
6755                         return -EINVAL;
6756
6757                 memcpy(settings->ciphers_pairwise, data, len);
6758
6759                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6760                         if (!cfg80211_supported_cipher_suite(
6761                                         &rdev->wiphy,
6762                                         settings->ciphers_pairwise[i]))
6763                                 return -EINVAL;
6764         }
6765
6766         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6767                 settings->cipher_group =
6768                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6769                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6770                                                      settings->cipher_group))
6771                         return -EINVAL;
6772         }
6773
6774         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6775                 settings->wpa_versions =
6776                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6777                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6778                         return -EINVAL;
6779         }
6780
6781         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6782                 void *data;
6783                 int len;
6784
6785                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6786                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6787                 settings->n_akm_suites = len / sizeof(u32);
6788
6789                 if (len % sizeof(u32))
6790                         return -EINVAL;
6791
6792                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6793                         return -EINVAL;
6794
6795                 memcpy(settings->akm_suites, data, len);
6796         }
6797
6798         return 0;
6799 }
6800
6801 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6802 {
6803         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6804         struct net_device *dev = info->user_ptr[1];
6805         struct ieee80211_channel *chan;
6806         struct cfg80211_assoc_request req = {};
6807         const u8 *bssid, *ssid;
6808         int err, ssid_len = 0;
6809
6810         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6811                 return -EINVAL;
6812
6813         if (!info->attrs[NL80211_ATTR_MAC] ||
6814             !info->attrs[NL80211_ATTR_SSID] ||
6815             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6816                 return -EINVAL;
6817
6818         if (!rdev->ops->assoc)
6819                 return -EOPNOTSUPP;
6820
6821         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6822             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6823                 return -EOPNOTSUPP;
6824
6825         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6826
6827         chan = nl80211_get_valid_chan(&rdev->wiphy,
6828                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6829         if (!chan)
6830                 return -EINVAL;
6831
6832         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6833         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6834
6835         if (info->attrs[NL80211_ATTR_IE]) {
6836                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6837                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6838         }
6839
6840         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6841                 enum nl80211_mfp mfp =
6842                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6843                 if (mfp == NL80211_MFP_REQUIRED)
6844                         req.use_mfp = true;
6845                 else if (mfp != NL80211_MFP_NO)
6846                         return -EINVAL;
6847         }
6848
6849         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6850                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6851
6852         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6853                 req.flags |= ASSOC_REQ_DISABLE_HT;
6854
6855         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6856                 memcpy(&req.ht_capa_mask,
6857                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6858                        sizeof(req.ht_capa_mask));
6859
6860         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6861                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6862                         return -EINVAL;
6863                 memcpy(&req.ht_capa,
6864                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6865                        sizeof(req.ht_capa));
6866         }
6867
6868         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6869                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6870
6871         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6872                 memcpy(&req.vht_capa_mask,
6873                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6874                        sizeof(req.vht_capa_mask));
6875
6876         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6877                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6878                         return -EINVAL;
6879                 memcpy(&req.vht_capa,
6880                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6881                        sizeof(req.vht_capa));
6882         }
6883
6884         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6885                 if (!(rdev->wiphy.features &
6886                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6887                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6888                         return -EINVAL;
6889                 req.flags |= ASSOC_REQ_USE_RRM;
6890         }
6891
6892         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6893         if (!err) {
6894                 wdev_lock(dev->ieee80211_ptr);
6895                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6896                                           ssid, ssid_len, &req);
6897                 wdev_unlock(dev->ieee80211_ptr);
6898         }
6899
6900         return err;
6901 }
6902
6903 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6904 {
6905         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6906         struct net_device *dev = info->user_ptr[1];
6907         const u8 *ie = NULL, *bssid;
6908         int ie_len = 0, err;
6909         u16 reason_code;
6910         bool local_state_change;
6911
6912         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6913                 return -EINVAL;
6914
6915         if (!info->attrs[NL80211_ATTR_MAC])
6916                 return -EINVAL;
6917
6918         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6919                 return -EINVAL;
6920
6921         if (!rdev->ops->deauth)
6922                 return -EOPNOTSUPP;
6923
6924         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6925             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6926                 return -EOPNOTSUPP;
6927
6928         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6929
6930         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6931         if (reason_code == 0) {
6932                 /* Reason Code 0 is reserved */
6933                 return -EINVAL;
6934         }
6935
6936         if (info->attrs[NL80211_ATTR_IE]) {
6937                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6938                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6939         }
6940
6941         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6942
6943         wdev_lock(dev->ieee80211_ptr);
6944         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6945                                    local_state_change);
6946         wdev_unlock(dev->ieee80211_ptr);
6947         return err;
6948 }
6949
6950 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6951 {
6952         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6953         struct net_device *dev = info->user_ptr[1];
6954         const u8 *ie = NULL, *bssid;
6955         int ie_len = 0, err;
6956         u16 reason_code;
6957         bool local_state_change;
6958
6959         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6960                 return -EINVAL;
6961
6962         if (!info->attrs[NL80211_ATTR_MAC])
6963                 return -EINVAL;
6964
6965         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6966                 return -EINVAL;
6967
6968         if (!rdev->ops->disassoc)
6969                 return -EOPNOTSUPP;
6970
6971         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6972             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6973                 return -EOPNOTSUPP;
6974
6975         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6976
6977         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6978         if (reason_code == 0) {
6979                 /* Reason Code 0 is reserved */
6980                 return -EINVAL;
6981         }
6982
6983         if (info->attrs[NL80211_ATTR_IE]) {
6984                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6985                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6986         }
6987
6988         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6989
6990         wdev_lock(dev->ieee80211_ptr);
6991         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6992                                      local_state_change);
6993         wdev_unlock(dev->ieee80211_ptr);
6994         return err;
6995 }
6996
6997 static bool
6998 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6999                          int mcast_rate[IEEE80211_NUM_BANDS],
7000                          int rateval)
7001 {
7002         struct wiphy *wiphy = &rdev->wiphy;
7003         bool found = false;
7004         int band, i;
7005
7006         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7007                 struct ieee80211_supported_band *sband;
7008
7009                 sband = wiphy->bands[band];
7010                 if (!sband)
7011                         continue;
7012
7013                 for (i = 0; i < sband->n_bitrates; i++) {
7014                         if (sband->bitrates[i].bitrate == rateval) {
7015                                 mcast_rate[band] = i + 1;
7016                                 found = true;
7017                                 break;
7018                         }
7019                 }
7020         }
7021
7022         return found;
7023 }
7024
7025 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7026 {
7027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7028         struct net_device *dev = info->user_ptr[1];
7029         struct cfg80211_ibss_params ibss;
7030         struct wiphy *wiphy;
7031         struct cfg80211_cached_keys *connkeys = NULL;
7032         int err;
7033
7034         memset(&ibss, 0, sizeof(ibss));
7035
7036         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7037                 return -EINVAL;
7038
7039         if (!info->attrs[NL80211_ATTR_SSID] ||
7040             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7041                 return -EINVAL;
7042
7043         ibss.beacon_interval = 100;
7044
7045         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7046                 ibss.beacon_interval =
7047                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7048                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7049                         return -EINVAL;
7050         }
7051
7052         if (!rdev->ops->join_ibss)
7053                 return -EOPNOTSUPP;
7054
7055         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7056                 return -EOPNOTSUPP;
7057
7058         wiphy = &rdev->wiphy;
7059
7060         if (info->attrs[NL80211_ATTR_MAC]) {
7061                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7062
7063                 if (!is_valid_ether_addr(ibss.bssid))
7064                         return -EINVAL;
7065         }
7066         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7067         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7068
7069         if (info->attrs[NL80211_ATTR_IE]) {
7070                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7071                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7072         }
7073
7074         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7075         if (err)
7076                 return err;
7077
7078         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7079                                      NL80211_IFTYPE_ADHOC))
7080                 return -EINVAL;
7081
7082         switch (ibss.chandef.width) {
7083         case NL80211_CHAN_WIDTH_5:
7084         case NL80211_CHAN_WIDTH_10:
7085         case NL80211_CHAN_WIDTH_20_NOHT:
7086                 break;
7087         case NL80211_CHAN_WIDTH_20:
7088         case NL80211_CHAN_WIDTH_40:
7089                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7090                         break;
7091         default:
7092                 return -EINVAL;
7093         }
7094
7095         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7096         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7097
7098         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7099                 u8 *rates =
7100                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7101                 int n_rates =
7102                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7103                 struct ieee80211_supported_band *sband =
7104                         wiphy->bands[ibss.chandef.chan->band];
7105
7106                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7107                                              &ibss.basic_rates);
7108                 if (err)
7109                         return err;
7110         }
7111
7112         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7113                 memcpy(&ibss.ht_capa_mask,
7114                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7115                        sizeof(ibss.ht_capa_mask));
7116
7117         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7118                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7119                         return -EINVAL;
7120                 memcpy(&ibss.ht_capa,
7121                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7122                        sizeof(ibss.ht_capa));
7123         }
7124
7125         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7126             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7127                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7128                 return -EINVAL;
7129
7130         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7131                 bool no_ht = false;
7132
7133                 connkeys = nl80211_parse_connkeys(rdev,
7134                                           info->attrs[NL80211_ATTR_KEYS],
7135                                           &no_ht);
7136                 if (IS_ERR(connkeys))
7137                         return PTR_ERR(connkeys);
7138
7139                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7140                     no_ht) {
7141                         kfree(connkeys);
7142                         return -EINVAL;
7143                 }
7144         }
7145
7146         ibss.control_port =
7147                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7148
7149         ibss.userspace_handles_dfs =
7150                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7151
7152         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7153         if (err)
7154                 kzfree(connkeys);
7155         return err;
7156 }
7157
7158 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7159 {
7160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7161         struct net_device *dev = info->user_ptr[1];
7162
7163         if (!rdev->ops->leave_ibss)
7164                 return -EOPNOTSUPP;
7165
7166         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7167                 return -EOPNOTSUPP;
7168
7169         return cfg80211_leave_ibss(rdev, dev, false);
7170 }
7171
7172 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7173 {
7174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7175         struct net_device *dev = info->user_ptr[1];
7176         int mcast_rate[IEEE80211_NUM_BANDS];
7177         u32 nla_rate;
7178         int err;
7179
7180         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7181             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7182                 return -EOPNOTSUPP;
7183
7184         if (!rdev->ops->set_mcast_rate)
7185                 return -EOPNOTSUPP;
7186
7187         memset(mcast_rate, 0, sizeof(mcast_rate));
7188
7189         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7190                 return -EINVAL;
7191
7192         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7193         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7194                 return -EINVAL;
7195
7196         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7197
7198         return err;
7199 }
7200
7201 static struct sk_buff *
7202 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7203                             int approxlen, u32 portid, u32 seq,
7204                             enum nl80211_commands cmd,
7205                             enum nl80211_attrs attr,
7206                             const struct nl80211_vendor_cmd_info *info,
7207                             gfp_t gfp)
7208 {
7209         struct sk_buff *skb;
7210         void *hdr;
7211         struct nlattr *data;
7212
7213         skb = nlmsg_new(approxlen + 100, gfp);
7214         if (!skb)
7215                 return NULL;
7216
7217         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7218         if (!hdr) {
7219                 kfree_skb(skb);
7220                 return NULL;
7221         }
7222
7223         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7224                 goto nla_put_failure;
7225
7226         if (info) {
7227                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7228                                 info->vendor_id))
7229                         goto nla_put_failure;
7230                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7231                                 info->subcmd))
7232                         goto nla_put_failure;
7233         }
7234
7235         data = nla_nest_start(skb, attr);
7236
7237         ((void **)skb->cb)[0] = rdev;
7238         ((void **)skb->cb)[1] = hdr;
7239         ((void **)skb->cb)[2] = data;
7240
7241         return skb;
7242
7243  nla_put_failure:
7244         kfree_skb(skb);
7245         return NULL;
7246 }
7247
7248 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7249                                            enum nl80211_commands cmd,
7250                                            enum nl80211_attrs attr,
7251                                            int vendor_event_idx,
7252                                            int approxlen, gfp_t gfp)
7253 {
7254         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7255         const struct nl80211_vendor_cmd_info *info;
7256
7257         switch (cmd) {
7258         case NL80211_CMD_TESTMODE:
7259                 if (WARN_ON(vendor_event_idx != -1))
7260                         return NULL;
7261                 info = NULL;
7262                 break;
7263         case NL80211_CMD_VENDOR:
7264                 if (WARN_ON(vendor_event_idx < 0 ||
7265                             vendor_event_idx >= wiphy->n_vendor_events))
7266                         return NULL;
7267                 info = &wiphy->vendor_events[vendor_event_idx];
7268                 break;
7269         default:
7270                 WARN_ON(1);
7271                 return NULL;
7272         }
7273
7274         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7275                                            cmd, attr, info, gfp);
7276 }
7277 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7278
7279 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7280 {
7281         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7282         void *hdr = ((void **)skb->cb)[1];
7283         struct nlattr *data = ((void **)skb->cb)[2];
7284         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7285
7286         /* clear CB data for netlink core to own from now on */
7287         memset(skb->cb, 0, sizeof(skb->cb));
7288
7289         nla_nest_end(skb, data);
7290         genlmsg_end(skb, hdr);
7291
7292         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7293                 mcgrp = NL80211_MCGRP_VENDOR;
7294
7295         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7296                                 mcgrp, gfp);
7297 }
7298 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7299
7300 #ifdef CONFIG_NL80211_TESTMODE
7301 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7302 {
7303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7304         struct wireless_dev *wdev =
7305                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7306         int err;
7307
7308         if (!rdev->ops->testmode_cmd)
7309                 return -EOPNOTSUPP;
7310
7311         if (IS_ERR(wdev)) {
7312                 err = PTR_ERR(wdev);
7313                 if (err != -EINVAL)
7314                         return err;
7315                 wdev = NULL;
7316         } else if (wdev->wiphy != &rdev->wiphy) {
7317                 return -EINVAL;
7318         }
7319
7320         if (!info->attrs[NL80211_ATTR_TESTDATA])
7321                 return -EINVAL;
7322
7323         rdev->cur_cmd_info = info;
7324         err = rdev_testmode_cmd(rdev, wdev,
7325                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7326                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7327         rdev->cur_cmd_info = NULL;
7328
7329         return err;
7330 }
7331
7332 static int nl80211_testmode_dump(struct sk_buff *skb,
7333                                  struct netlink_callback *cb)
7334 {
7335         struct cfg80211_registered_device *rdev;
7336         int err;
7337         long phy_idx;
7338         void *data = NULL;
7339         int data_len = 0;
7340
7341         rtnl_lock();
7342
7343         if (cb->args[0]) {
7344                 /*
7345                  * 0 is a valid index, but not valid for args[0],
7346                  * so we need to offset by 1.
7347                  */
7348                 phy_idx = cb->args[0] - 1;
7349         } else {
7350                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7351                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7352                                   nl80211_policy);
7353                 if (err)
7354                         goto out_err;
7355
7356                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7357                                                   nl80211_fam.attrbuf);
7358                 if (IS_ERR(rdev)) {
7359                         err = PTR_ERR(rdev);
7360                         goto out_err;
7361                 }
7362                 phy_idx = rdev->wiphy_idx;
7363                 rdev = NULL;
7364
7365                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7366                         cb->args[1] =
7367                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7368         }
7369
7370         if (cb->args[1]) {
7371                 data = nla_data((void *)cb->args[1]);
7372                 data_len = nla_len((void *)cb->args[1]);
7373         }
7374
7375         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7376         if (!rdev) {
7377                 err = -ENOENT;
7378                 goto out_err;
7379         }
7380
7381         if (!rdev->ops->testmode_dump) {
7382                 err = -EOPNOTSUPP;
7383                 goto out_err;
7384         }
7385
7386         while (1) {
7387                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7388                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7389                                            NL80211_CMD_TESTMODE);
7390                 struct nlattr *tmdata;
7391
7392                 if (!hdr)
7393                         break;
7394
7395                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7396                         genlmsg_cancel(skb, hdr);
7397                         break;
7398                 }
7399
7400                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7401                 if (!tmdata) {
7402                         genlmsg_cancel(skb, hdr);
7403                         break;
7404                 }
7405                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7406                 nla_nest_end(skb, tmdata);
7407
7408                 if (err == -ENOBUFS || err == -ENOENT) {
7409                         genlmsg_cancel(skb, hdr);
7410                         break;
7411                 } else if (err) {
7412                         genlmsg_cancel(skb, hdr);
7413                         goto out_err;
7414                 }
7415
7416                 genlmsg_end(skb, hdr);
7417         }
7418
7419         err = skb->len;
7420         /* see above */
7421         cb->args[0] = phy_idx + 1;
7422  out_err:
7423         rtnl_unlock();
7424         return err;
7425 }
7426 #endif
7427
7428 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7429 {
7430         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7431         struct net_device *dev = info->user_ptr[1];
7432         struct cfg80211_connect_params connect;
7433         struct wiphy *wiphy;
7434         struct cfg80211_cached_keys *connkeys = NULL;
7435         int err;
7436
7437         memset(&connect, 0, sizeof(connect));
7438
7439         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7440                 return -EINVAL;
7441
7442         if (!info->attrs[NL80211_ATTR_SSID] ||
7443             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7444                 return -EINVAL;
7445
7446         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7447                 connect.auth_type =
7448                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7449                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7450                                              NL80211_CMD_CONNECT))
7451                         return -EINVAL;
7452         } else
7453                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7454
7455         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7456
7457         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7458                                       NL80211_MAX_NR_CIPHER_SUITES);
7459         if (err)
7460                 return err;
7461
7462         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7463             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7464                 return -EOPNOTSUPP;
7465
7466         wiphy = &rdev->wiphy;
7467
7468         connect.bg_scan_period = -1;
7469         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7470                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7471                 connect.bg_scan_period =
7472                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7473         }
7474
7475         if (info->attrs[NL80211_ATTR_MAC])
7476                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7477         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7478                 connect.bssid_hint =
7479                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7480         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7481         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7482
7483         if (info->attrs[NL80211_ATTR_IE]) {
7484                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7485                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7486         }
7487
7488         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7489                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7490                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7491                     connect.mfp != NL80211_MFP_NO)
7492                         return -EINVAL;
7493         } else {
7494                 connect.mfp = NL80211_MFP_NO;
7495         }
7496
7497         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7498                 connect.channel = nl80211_get_valid_chan(
7499                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7500                 if (!connect.channel)
7501                         return -EINVAL;
7502         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7503                 connect.channel_hint = nl80211_get_valid_chan(
7504                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7505                 if (!connect.channel_hint)
7506                         return -EINVAL;
7507         }
7508
7509         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7510                 connkeys = nl80211_parse_connkeys(rdev,
7511                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7512                 if (IS_ERR(connkeys))
7513                         return PTR_ERR(connkeys);
7514         }
7515
7516         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7517                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7518
7519         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7520                 memcpy(&connect.ht_capa_mask,
7521                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7522                        sizeof(connect.ht_capa_mask));
7523
7524         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7525                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7526                         kzfree(connkeys);
7527                         return -EINVAL;
7528                 }
7529                 memcpy(&connect.ht_capa,
7530                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7531                        sizeof(connect.ht_capa));
7532         }
7533
7534         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7535                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7536
7537         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7538                 memcpy(&connect.vht_capa_mask,
7539                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7540                        sizeof(connect.vht_capa_mask));
7541
7542         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7543                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7544                         kzfree(connkeys);
7545                         return -EINVAL;
7546                 }
7547                 memcpy(&connect.vht_capa,
7548                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7549                        sizeof(connect.vht_capa));
7550         }
7551
7552         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7553                 if (!(rdev->wiphy.features &
7554                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7555                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7556                         return -EINVAL;
7557                 connect.flags |= ASSOC_REQ_USE_RRM;
7558         }
7559
7560         wdev_lock(dev->ieee80211_ptr);
7561         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7562         wdev_unlock(dev->ieee80211_ptr);
7563         if (err)
7564                 kzfree(connkeys);
7565         return err;
7566 }
7567
7568 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7569 {
7570         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7571         struct net_device *dev = info->user_ptr[1];
7572         u16 reason;
7573         int ret;
7574
7575         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7576                 reason = WLAN_REASON_DEAUTH_LEAVING;
7577         else
7578                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7579
7580         if (reason == 0)
7581                 return -EINVAL;
7582
7583         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7584             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7585                 return -EOPNOTSUPP;
7586
7587         wdev_lock(dev->ieee80211_ptr);
7588         ret = cfg80211_disconnect(rdev, dev, reason, true);
7589         wdev_unlock(dev->ieee80211_ptr);
7590         return ret;
7591 }
7592
7593 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7594 {
7595         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7596         struct net *net;
7597         int err;
7598         u32 pid;
7599
7600         if (!info->attrs[NL80211_ATTR_PID])
7601                 return -EINVAL;
7602
7603         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7604
7605         net = get_net_ns_by_pid(pid);
7606         if (IS_ERR(net))
7607                 return PTR_ERR(net);
7608
7609         err = 0;
7610
7611         /* check if anything to do */
7612         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7613                 err = cfg80211_switch_netns(rdev, net);
7614
7615         put_net(net);
7616         return err;
7617 }
7618
7619 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7620 {
7621         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7622         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7623                         struct cfg80211_pmksa *pmksa) = NULL;
7624         struct net_device *dev = info->user_ptr[1];
7625         struct cfg80211_pmksa pmksa;
7626
7627         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7628
7629         if (!info->attrs[NL80211_ATTR_MAC])
7630                 return -EINVAL;
7631
7632         if (!info->attrs[NL80211_ATTR_PMKID])
7633                 return -EINVAL;
7634
7635         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7636         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7637
7638         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7639             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7640                 return -EOPNOTSUPP;
7641
7642         switch (info->genlhdr->cmd) {
7643         case NL80211_CMD_SET_PMKSA:
7644                 rdev_ops = rdev->ops->set_pmksa;
7645                 break;
7646         case NL80211_CMD_DEL_PMKSA:
7647                 rdev_ops = rdev->ops->del_pmksa;
7648                 break;
7649         default:
7650                 WARN_ON(1);
7651                 break;
7652         }
7653
7654         if (!rdev_ops)
7655                 return -EOPNOTSUPP;
7656
7657         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7658 }
7659
7660 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7661 {
7662         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7663         struct net_device *dev = info->user_ptr[1];
7664
7665         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7666             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7667                 return -EOPNOTSUPP;
7668
7669         if (!rdev->ops->flush_pmksa)
7670                 return -EOPNOTSUPP;
7671
7672         return rdev_flush_pmksa(rdev, dev);
7673 }
7674
7675 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7676 {
7677         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7678         struct net_device *dev = info->user_ptr[1];
7679         u8 action_code, dialog_token;
7680         u32 peer_capability = 0;
7681         u16 status_code;
7682         u8 *peer;
7683         bool initiator;
7684
7685         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7686             !rdev->ops->tdls_mgmt)
7687                 return -EOPNOTSUPP;
7688
7689         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7690             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7691             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7692             !info->attrs[NL80211_ATTR_IE] ||
7693             !info->attrs[NL80211_ATTR_MAC])
7694                 return -EINVAL;
7695
7696         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7697         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7698         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7699         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7700         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7701         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7702                 peer_capability =
7703                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7704
7705         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7706                               dialog_token, status_code, peer_capability,
7707                               initiator,
7708                               nla_data(info->attrs[NL80211_ATTR_IE]),
7709                               nla_len(info->attrs[NL80211_ATTR_IE]));
7710 }
7711
7712 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7713 {
7714         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7715         struct net_device *dev = info->user_ptr[1];
7716         enum nl80211_tdls_operation operation;
7717         u8 *peer;
7718
7719         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7720             !rdev->ops->tdls_oper)
7721                 return -EOPNOTSUPP;
7722
7723         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7724             !info->attrs[NL80211_ATTR_MAC])
7725                 return -EINVAL;
7726
7727         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7728         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7729
7730         return rdev_tdls_oper(rdev, dev, peer, operation);
7731 }
7732
7733 static int nl80211_remain_on_channel(struct sk_buff *skb,
7734                                      struct genl_info *info)
7735 {
7736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7737         struct wireless_dev *wdev = info->user_ptr[1];
7738         struct cfg80211_chan_def chandef;
7739         struct sk_buff *msg;
7740         void *hdr;
7741         u64 cookie;
7742         u32 duration;
7743         int err;
7744
7745         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7746             !info->attrs[NL80211_ATTR_DURATION])
7747                 return -EINVAL;
7748
7749         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7750
7751         if (!rdev->ops->remain_on_channel ||
7752             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7753                 return -EOPNOTSUPP;
7754
7755         /*
7756          * We should be on that channel for at least a minimum amount of
7757          * time (10ms) but no longer than the driver supports.
7758          */
7759         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7760             duration > rdev->wiphy.max_remain_on_channel_duration)
7761                 return -EINVAL;
7762
7763         err = nl80211_parse_chandef(rdev, info, &chandef);
7764         if (err)
7765                 return err;
7766
7767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7768         if (!msg)
7769                 return -ENOMEM;
7770
7771         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7772                              NL80211_CMD_REMAIN_ON_CHANNEL);
7773         if (!hdr) {
7774                 err = -ENOBUFS;
7775                 goto free_msg;
7776         }
7777
7778         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7779                                      duration, &cookie);
7780
7781         if (err)
7782                 goto free_msg;
7783
7784         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7785                 goto nla_put_failure;
7786
7787         genlmsg_end(msg, hdr);
7788
7789         return genlmsg_reply(msg, info);
7790
7791  nla_put_failure:
7792         err = -ENOBUFS;
7793  free_msg:
7794         nlmsg_free(msg);
7795         return err;
7796 }
7797
7798 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7799                                             struct genl_info *info)
7800 {
7801         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7802         struct wireless_dev *wdev = info->user_ptr[1];
7803         u64 cookie;
7804
7805         if (!info->attrs[NL80211_ATTR_COOKIE])
7806                 return -EINVAL;
7807
7808         if (!rdev->ops->cancel_remain_on_channel)
7809                 return -EOPNOTSUPP;
7810
7811         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7812
7813         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7814 }
7815
7816 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7817                            u8 *rates, u8 rates_len)
7818 {
7819         u8 i;
7820         u32 mask = 0;
7821
7822         for (i = 0; i < rates_len; i++) {
7823                 int rate = (rates[i] & 0x7f) * 5;
7824                 int ridx;
7825                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7826                         struct ieee80211_rate *srate =
7827                                 &sband->bitrates[ridx];
7828                         if (rate == srate->bitrate) {
7829                                 mask |= 1 << ridx;
7830                                 break;
7831                         }
7832                 }
7833                 if (ridx == sband->n_bitrates)
7834                         return 0; /* rate not found */
7835         }
7836
7837         return mask;
7838 }
7839
7840 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7841                                u8 *rates, u8 rates_len,
7842                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7843 {
7844         u8 i;
7845
7846         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7847
7848         for (i = 0; i < rates_len; i++) {
7849                 int ridx, rbit;
7850
7851                 ridx = rates[i] / 8;
7852                 rbit = BIT(rates[i] % 8);
7853
7854                 /* check validity */
7855                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7856                         return false;
7857
7858                 /* check availability */
7859                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7860                         mcs[ridx] |= rbit;
7861                 else
7862                         return false;
7863         }
7864
7865         return true;
7866 }
7867
7868 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7869 {
7870         u16 mcs_mask = 0;
7871
7872         switch (vht_mcs_map) {
7873         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7874                 break;
7875         case IEEE80211_VHT_MCS_SUPPORT_0_7:
7876                 mcs_mask = 0x00FF;
7877                 break;
7878         case IEEE80211_VHT_MCS_SUPPORT_0_8:
7879                 mcs_mask = 0x01FF;
7880                 break;
7881         case IEEE80211_VHT_MCS_SUPPORT_0_9:
7882                 mcs_mask = 0x03FF;
7883                 break;
7884         default:
7885                 break;
7886         }
7887
7888         return mcs_mask;
7889 }
7890
7891 static void vht_build_mcs_mask(u16 vht_mcs_map,
7892                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7893 {
7894         u8 nss;
7895
7896         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7897                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7898                 vht_mcs_map >>= 2;
7899         }
7900 }
7901
7902 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7903                              struct nl80211_txrate_vht *txrate,
7904                              u16 mcs[NL80211_VHT_NSS_MAX])
7905 {
7906         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7907         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7908         u8 i;
7909
7910         if (!sband->vht_cap.vht_supported)
7911                 return false;
7912
7913         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7914
7915         /* Build vht_mcs_mask from VHT capabilities */
7916         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7917
7918         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7919                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7920                         mcs[i] = txrate->mcs[i];
7921                 else
7922                         return false;
7923         }
7924
7925         return true;
7926 }
7927
7928 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7929         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7930                                     .len = NL80211_MAX_SUPP_RATES },
7931         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7932                                 .len = NL80211_MAX_SUPP_HT_RATES },
7933         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7934         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7935 };
7936
7937 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7938                                        struct genl_info *info)
7939 {
7940         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7941         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7942         struct cfg80211_bitrate_mask mask;
7943         int rem, i;
7944         struct net_device *dev = info->user_ptr[1];
7945         struct nlattr *tx_rates;
7946         struct ieee80211_supported_band *sband;
7947         u16 vht_tx_mcs_map;
7948
7949         if (!rdev->ops->set_bitrate_mask)
7950                 return -EOPNOTSUPP;
7951
7952         memset(&mask, 0, sizeof(mask));
7953         /* Default to all rates enabled */
7954         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7955                 sband = rdev->wiphy.bands[i];
7956
7957                 if (!sband)
7958                         continue;
7959
7960                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7961                 memcpy(mask.control[i].ht_mcs,
7962                        sband->ht_cap.mcs.rx_mask,
7963                        sizeof(mask.control[i].ht_mcs));
7964
7965                 if (!sband->vht_cap.vht_supported)
7966                         continue;
7967
7968                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7969                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7970         }
7971
7972         /* if no rates are given set it back to the defaults */
7973         if (!info->attrs[NL80211_ATTR_TX_RATES])
7974                 goto out;
7975
7976         /*
7977          * The nested attribute uses enum nl80211_band as the index. This maps
7978          * directly to the enum ieee80211_band values used in cfg80211.
7979          */
7980         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7981         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7982                 enum ieee80211_band band = nla_type(tx_rates);
7983                 int err;
7984
7985                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7986                         return -EINVAL;
7987                 sband = rdev->wiphy.bands[band];
7988                 if (sband == NULL)
7989                         return -EINVAL;
7990                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7991                                 nla_len(tx_rates), nl80211_txattr_policy);
7992                 if (err)
7993                         return err;
7994                 if (tb[NL80211_TXRATE_LEGACY]) {
7995                         mask.control[band].legacy = rateset_to_mask(
7996                                 sband,
7997                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7998                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7999                         if ((mask.control[band].legacy == 0) &&
8000                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8001                                 return -EINVAL;
8002                 }
8003                 if (tb[NL80211_TXRATE_HT]) {
8004                         if (!ht_rateset_to_mask(
8005                                         sband,
8006                                         nla_data(tb[NL80211_TXRATE_HT]),
8007                                         nla_len(tb[NL80211_TXRATE_HT]),
8008                                         mask.control[band].ht_mcs))
8009                                 return -EINVAL;
8010                 }
8011                 if (tb[NL80211_TXRATE_VHT]) {
8012                         if (!vht_set_mcs_mask(
8013                                         sband,
8014                                         nla_data(tb[NL80211_TXRATE_VHT]),
8015                                         mask.control[band].vht_mcs))
8016                                 return -EINVAL;
8017                 }
8018                 if (tb[NL80211_TXRATE_GI]) {
8019                         mask.control[band].gi =
8020                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8021                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8022                                 return -EINVAL;
8023                 }
8024
8025                 if (mask.control[band].legacy == 0) {
8026                         /* don't allow empty legacy rates if HT or VHT
8027                          * are not even supported.
8028                          */
8029                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8030                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8031                                 return -EINVAL;
8032
8033                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8034                                 if (mask.control[band].ht_mcs[i])
8035                                         goto out;
8036
8037                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8038                                 if (mask.control[band].vht_mcs[i])
8039                                         goto out;
8040
8041                         /* legacy and mcs rates may not be both empty */
8042                         return -EINVAL;
8043                 }
8044         }
8045
8046 out:
8047         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8048 }
8049
8050 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8051 {
8052         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8053         struct wireless_dev *wdev = info->user_ptr[1];
8054         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8055
8056         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8057                 return -EINVAL;
8058
8059         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8060                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8061
8062         switch (wdev->iftype) {
8063         case NL80211_IFTYPE_STATION:
8064         case NL80211_IFTYPE_ADHOC:
8065         case NL80211_IFTYPE_P2P_CLIENT:
8066         case NL80211_IFTYPE_AP:
8067         case NL80211_IFTYPE_AP_VLAN:
8068         case NL80211_IFTYPE_MESH_POINT:
8069         case NL80211_IFTYPE_P2P_GO:
8070         case NL80211_IFTYPE_P2P_DEVICE:
8071                 break;
8072         default:
8073                 return -EOPNOTSUPP;
8074         }
8075
8076         /* not much point in registering if we can't reply */
8077         if (!rdev->ops->mgmt_tx)
8078                 return -EOPNOTSUPP;
8079
8080         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8081                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8082                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8083 }
8084
8085 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8086 {
8087         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8088         struct wireless_dev *wdev = info->user_ptr[1];
8089         struct cfg80211_chan_def chandef;
8090         int err;
8091         void *hdr = NULL;
8092         u64 cookie;
8093         struct sk_buff *msg = NULL;
8094         struct cfg80211_mgmt_tx_params params = {
8095                 .dont_wait_for_ack =
8096                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8097         };
8098
8099         if (!info->attrs[NL80211_ATTR_FRAME])
8100                 return -EINVAL;
8101
8102         if (!rdev->ops->mgmt_tx)
8103                 return -EOPNOTSUPP;
8104
8105         switch (wdev->iftype) {
8106         case NL80211_IFTYPE_P2P_DEVICE:
8107                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8108                         return -EINVAL;
8109         case NL80211_IFTYPE_STATION:
8110         case NL80211_IFTYPE_ADHOC:
8111         case NL80211_IFTYPE_P2P_CLIENT:
8112         case NL80211_IFTYPE_AP:
8113         case NL80211_IFTYPE_AP_VLAN:
8114         case NL80211_IFTYPE_MESH_POINT:
8115         case NL80211_IFTYPE_P2P_GO:
8116                 break;
8117         default:
8118                 return -EOPNOTSUPP;
8119         }
8120
8121         if (info->attrs[NL80211_ATTR_DURATION]) {
8122                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8123                         return -EINVAL;
8124                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8125
8126                 /*
8127                  * We should wait on the channel for at least a minimum amount
8128                  * of time (10ms) but no longer than the driver supports.
8129                  */
8130                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8131                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8132                         return -EINVAL;
8133
8134         }
8135
8136         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8137
8138         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8139                 return -EINVAL;
8140
8141         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8142
8143         /* get the channel if any has been specified, otherwise pass NULL to
8144          * the driver. The latter will use the current one
8145          */
8146         chandef.chan = NULL;
8147         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8148                 err = nl80211_parse_chandef(rdev, info, &chandef);
8149                 if (err)
8150                         return err;
8151         }
8152
8153         if (!chandef.chan && params.offchan)
8154                 return -EINVAL;
8155
8156         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8157         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8158
8159         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8160                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8161                 int i;
8162
8163                 if (len % sizeof(u16))
8164                         return -EINVAL;
8165
8166                 params.n_csa_offsets = len / sizeof(u16);
8167                 params.csa_offsets =
8168                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8169
8170                 /* check that all the offsets fit the frame */
8171                 for (i = 0; i < params.n_csa_offsets; i++) {
8172                         if (params.csa_offsets[i] >= params.len)
8173                                 return -EINVAL;
8174                 }
8175         }
8176
8177         if (!params.dont_wait_for_ack) {
8178                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8179                 if (!msg)
8180                         return -ENOMEM;
8181
8182                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8183                                      NL80211_CMD_FRAME);
8184                 if (!hdr) {
8185                         err = -ENOBUFS;
8186                         goto free_msg;
8187                 }
8188         }
8189
8190         params.chan = chandef.chan;
8191         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8192         if (err)
8193                 goto free_msg;
8194
8195         if (msg) {
8196                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8197                         goto nla_put_failure;
8198
8199                 genlmsg_end(msg, hdr);
8200                 return genlmsg_reply(msg, info);
8201         }
8202
8203         return 0;
8204
8205  nla_put_failure:
8206         err = -ENOBUFS;
8207  free_msg:
8208         nlmsg_free(msg);
8209         return err;
8210 }
8211
8212 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8213 {
8214         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8215         struct wireless_dev *wdev = info->user_ptr[1];
8216         u64 cookie;
8217
8218         if (!info->attrs[NL80211_ATTR_COOKIE])
8219                 return -EINVAL;
8220
8221         if (!rdev->ops->mgmt_tx_cancel_wait)
8222                 return -EOPNOTSUPP;
8223
8224         switch (wdev->iftype) {
8225         case NL80211_IFTYPE_STATION:
8226         case NL80211_IFTYPE_ADHOC:
8227         case NL80211_IFTYPE_P2P_CLIENT:
8228         case NL80211_IFTYPE_AP:
8229         case NL80211_IFTYPE_AP_VLAN:
8230         case NL80211_IFTYPE_P2P_GO:
8231         case NL80211_IFTYPE_P2P_DEVICE:
8232                 break;
8233         default:
8234                 return -EOPNOTSUPP;
8235         }
8236
8237         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8238
8239         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8240 }
8241
8242 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8243 {
8244         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8245         struct wireless_dev *wdev;
8246         struct net_device *dev = info->user_ptr[1];
8247         u8 ps_state;
8248         bool state;
8249         int err;
8250
8251         if (!info->attrs[NL80211_ATTR_PS_STATE])
8252                 return -EINVAL;
8253
8254         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8255
8256         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8257                 return -EINVAL;
8258
8259         wdev = dev->ieee80211_ptr;
8260
8261         if (!rdev->ops->set_power_mgmt)
8262                 return -EOPNOTSUPP;
8263
8264         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8265
8266         if (state == wdev->ps)
8267                 return 0;
8268
8269         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8270         if (!err)
8271                 wdev->ps = state;
8272         return err;
8273 }
8274
8275 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8276 {
8277         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8278         enum nl80211_ps_state ps_state;
8279         struct wireless_dev *wdev;
8280         struct net_device *dev = info->user_ptr[1];
8281         struct sk_buff *msg;
8282         void *hdr;
8283         int err;
8284
8285         wdev = dev->ieee80211_ptr;
8286
8287         if (!rdev->ops->set_power_mgmt)
8288                 return -EOPNOTSUPP;
8289
8290         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8291         if (!msg)
8292                 return -ENOMEM;
8293
8294         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8295                              NL80211_CMD_GET_POWER_SAVE);
8296         if (!hdr) {
8297                 err = -ENOBUFS;
8298                 goto free_msg;
8299         }
8300
8301         if (wdev->ps)
8302                 ps_state = NL80211_PS_ENABLED;
8303         else
8304                 ps_state = NL80211_PS_DISABLED;
8305
8306         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8307                 goto nla_put_failure;
8308
8309         genlmsg_end(msg, hdr);
8310         return genlmsg_reply(msg, info);
8311
8312  nla_put_failure:
8313         err = -ENOBUFS;
8314  free_msg:
8315         nlmsg_free(msg);
8316         return err;
8317 }
8318
8319 static const struct nla_policy
8320 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8321         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8322         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8323         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8324         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8325         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8326         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8327 };
8328
8329 static int nl80211_set_cqm_txe(struct genl_info *info,
8330                                u32 rate, u32 pkts, u32 intvl)
8331 {
8332         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8333         struct net_device *dev = info->user_ptr[1];
8334         struct wireless_dev *wdev = dev->ieee80211_ptr;
8335
8336         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8337                 return -EINVAL;
8338
8339         if (!rdev->ops->set_cqm_txe_config)
8340                 return -EOPNOTSUPP;
8341
8342         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8343             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8344                 return -EOPNOTSUPP;
8345
8346         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8347 }
8348
8349 static int nl80211_set_cqm_rssi(struct genl_info *info,
8350                                 s32 threshold, u32 hysteresis)
8351 {
8352         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8353         struct net_device *dev = info->user_ptr[1];
8354         struct wireless_dev *wdev = dev->ieee80211_ptr;
8355
8356         if (threshold > 0)
8357                 return -EINVAL;
8358
8359         /* disabling - hysteresis should also be zero then */
8360         if (threshold == 0)
8361                 hysteresis = 0;
8362
8363         if (!rdev->ops->set_cqm_rssi_config)
8364                 return -EOPNOTSUPP;
8365
8366         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8367             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8368                 return -EOPNOTSUPP;
8369
8370         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8371 }
8372
8373 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8374 {
8375         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8376         struct nlattr *cqm;
8377         int err;
8378
8379         cqm = info->attrs[NL80211_ATTR_CQM];
8380         if (!cqm)
8381                 return -EINVAL;
8382
8383         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8384                                nl80211_attr_cqm_policy);
8385         if (err)
8386                 return err;
8387
8388         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8389             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8390                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8391                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8392
8393                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8394         }
8395
8396         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8397             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8398             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8399                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8400                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8401                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8402
8403                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8404         }
8405
8406         return -EINVAL;
8407 }
8408
8409 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8410 {
8411         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8412         struct net_device *dev = info->user_ptr[1];
8413         struct ocb_setup setup = {};
8414         int err;
8415
8416         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8417         if (err)
8418                 return err;
8419
8420         return cfg80211_join_ocb(rdev, dev, &setup);
8421 }
8422
8423 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8424 {
8425         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8426         struct net_device *dev = info->user_ptr[1];
8427
8428         return cfg80211_leave_ocb(rdev, dev);
8429 }
8430
8431 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8432 {
8433         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8434         struct net_device *dev = info->user_ptr[1];
8435         struct mesh_config cfg;
8436         struct mesh_setup setup;
8437         int err;
8438
8439         /* start with default */
8440         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8441         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8442
8443         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8444                 /* and parse parameters if given */
8445                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8446                 if (err)
8447                         return err;
8448         }
8449
8450         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8451             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8452                 return -EINVAL;
8453
8454         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8455         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8456
8457         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8458             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8459                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8460                         return -EINVAL;
8461
8462         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8463                 setup.beacon_interval =
8464                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8465                 if (setup.beacon_interval < 10 ||
8466                     setup.beacon_interval > 10000)
8467                         return -EINVAL;
8468         }
8469
8470         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8471                 setup.dtim_period =
8472                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8473                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8474                         return -EINVAL;
8475         }
8476
8477         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8478                 /* parse additional setup parameters if given */
8479                 err = nl80211_parse_mesh_setup(info, &setup);
8480                 if (err)
8481                         return err;
8482         }
8483
8484         if (setup.user_mpm)
8485                 cfg.auto_open_plinks = false;
8486
8487         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8488                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8489                 if (err)
8490                         return err;
8491         } else {
8492                 /* cfg80211_join_mesh() will sort it out */
8493                 setup.chandef.chan = NULL;
8494         }
8495
8496         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8497                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8498                 int n_rates =
8499                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8500                 struct ieee80211_supported_band *sband;
8501
8502                 if (!setup.chandef.chan)
8503                         return -EINVAL;
8504
8505                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8506
8507                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8508                                              &setup.basic_rates);
8509                 if (err)
8510                         return err;
8511         }
8512
8513         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8514 }
8515
8516 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8517 {
8518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8519         struct net_device *dev = info->user_ptr[1];
8520
8521         return cfg80211_leave_mesh(rdev, dev);
8522 }
8523
8524 #ifdef CONFIG_PM
8525 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8526                                         struct cfg80211_registered_device *rdev)
8527 {
8528         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8529         struct nlattr *nl_pats, *nl_pat;
8530         int i, pat_len;
8531
8532         if (!wowlan->n_patterns)
8533                 return 0;
8534
8535         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8536         if (!nl_pats)
8537                 return -ENOBUFS;
8538
8539         for (i = 0; i < wowlan->n_patterns; i++) {
8540                 nl_pat = nla_nest_start(msg, i + 1);
8541                 if (!nl_pat)
8542                         return -ENOBUFS;
8543                 pat_len = wowlan->patterns[i].pattern_len;
8544                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8545                             wowlan->patterns[i].mask) ||
8546                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8547                             wowlan->patterns[i].pattern) ||
8548                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8549                                 wowlan->patterns[i].pkt_offset))
8550                         return -ENOBUFS;
8551                 nla_nest_end(msg, nl_pat);
8552         }
8553         nla_nest_end(msg, nl_pats);
8554
8555         return 0;
8556 }
8557
8558 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8559                                    struct cfg80211_wowlan_tcp *tcp)
8560 {
8561         struct nlattr *nl_tcp;
8562
8563         if (!tcp)
8564                 return 0;
8565
8566         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8567         if (!nl_tcp)
8568                 return -ENOBUFS;
8569
8570         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8571             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8572             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8573             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8574             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8575             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8576                     tcp->payload_len, tcp->payload) ||
8577             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8578                         tcp->data_interval) ||
8579             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8580                     tcp->wake_len, tcp->wake_data) ||
8581             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8582                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8583                 return -ENOBUFS;
8584
8585         if (tcp->payload_seq.len &&
8586             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8587                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8588                 return -ENOBUFS;
8589
8590         if (tcp->payload_tok.len &&
8591             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8592                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8593                     &tcp->payload_tok))
8594                 return -ENOBUFS;
8595
8596         nla_nest_end(msg, nl_tcp);
8597
8598         return 0;
8599 }
8600
8601 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8602 {
8603         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8604         struct sk_buff *msg;
8605         void *hdr;
8606         u32 size = NLMSG_DEFAULT_SIZE;
8607
8608         if (!rdev->wiphy.wowlan)
8609                 return -EOPNOTSUPP;
8610
8611         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8612                 /* adjust size to have room for all the data */
8613                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8614                         rdev->wiphy.wowlan_config->tcp->payload_len +
8615                         rdev->wiphy.wowlan_config->tcp->wake_len +
8616                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8617         }
8618
8619         msg = nlmsg_new(size, GFP_KERNEL);
8620         if (!msg)
8621                 return -ENOMEM;
8622
8623         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8624                              NL80211_CMD_GET_WOWLAN);
8625         if (!hdr)
8626                 goto nla_put_failure;
8627
8628         if (rdev->wiphy.wowlan_config) {
8629                 struct nlattr *nl_wowlan;
8630
8631                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8632                 if (!nl_wowlan)
8633                         goto nla_put_failure;
8634
8635                 if ((rdev->wiphy.wowlan_config->any &&
8636                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8637                     (rdev->wiphy.wowlan_config->disconnect &&
8638                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8639                     (rdev->wiphy.wowlan_config->magic_pkt &&
8640                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8641                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8642                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8643                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8644                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8645                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8646                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8647                     (rdev->wiphy.wowlan_config->rfkill_release &&
8648                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8649                         goto nla_put_failure;
8650
8651                 if (nl80211_send_wowlan_patterns(msg, rdev))
8652                         goto nla_put_failure;
8653
8654                 if (nl80211_send_wowlan_tcp(msg,
8655                                             rdev->wiphy.wowlan_config->tcp))
8656                         goto nla_put_failure;
8657
8658                 nla_nest_end(msg, nl_wowlan);
8659         }
8660
8661         genlmsg_end(msg, hdr);
8662         return genlmsg_reply(msg, info);
8663
8664 nla_put_failure:
8665         nlmsg_free(msg);
8666         return -ENOBUFS;
8667 }
8668
8669 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8670                                     struct nlattr *attr,
8671                                     struct cfg80211_wowlan *trig)
8672 {
8673         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8674         struct cfg80211_wowlan_tcp *cfg;
8675         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8676         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8677         u32 size;
8678         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8679         int err, port;
8680
8681         if (!rdev->wiphy.wowlan->tcp)
8682                 return -EINVAL;
8683
8684         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8685                         nla_data(attr), nla_len(attr),
8686                         nl80211_wowlan_tcp_policy);
8687         if (err)
8688                 return err;
8689
8690         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8691             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8692             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8693             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8694             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8695             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8696             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8697             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8698                 return -EINVAL;
8699
8700         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8701         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8702                 return -EINVAL;
8703
8704         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8705                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8706             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8707                 return -EINVAL;
8708
8709         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8710         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8711                 return -EINVAL;
8712
8713         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8714         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8715                 return -EINVAL;
8716
8717         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8718                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8719
8720                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8721                 tokens_size = tokln - sizeof(*tok);
8722
8723                 if (!tok->len || tokens_size % tok->len)
8724                         return -EINVAL;
8725                 if (!rdev->wiphy.wowlan->tcp->tok)
8726                         return -EINVAL;
8727                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8728                         return -EINVAL;
8729                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8730                         return -EINVAL;
8731                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8732                         return -EINVAL;
8733                 if (tok->offset + tok->len > data_size)
8734                         return -EINVAL;
8735         }
8736
8737         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8738                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8739                 if (!rdev->wiphy.wowlan->tcp->seq)
8740                         return -EINVAL;
8741                 if (seq->len == 0 || seq->len > 4)
8742                         return -EINVAL;
8743                 if (seq->len + seq->offset > data_size)
8744                         return -EINVAL;
8745         }
8746
8747         size = sizeof(*cfg);
8748         size += data_size;
8749         size += wake_size + wake_mask_size;
8750         size += tokens_size;
8751
8752         cfg = kzalloc(size, GFP_KERNEL);
8753         if (!cfg)
8754                 return -ENOMEM;
8755         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8756         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8757         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8758                ETH_ALEN);
8759         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8760                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8761         else
8762                 port = 0;
8763 #ifdef CONFIG_INET
8764         /* allocate a socket and port for it and use it */
8765         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8766                             IPPROTO_TCP, &cfg->sock, 1);
8767         if (err) {
8768                 kfree(cfg);
8769                 return err;
8770         }
8771         if (inet_csk_get_port(cfg->sock->sk, port)) {
8772                 sock_release(cfg->sock);
8773                 kfree(cfg);
8774                 return -EADDRINUSE;
8775         }
8776         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8777 #else
8778         if (!port) {
8779                 kfree(cfg);
8780                 return -EINVAL;
8781         }
8782         cfg->src_port = port;
8783 #endif
8784
8785         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8786         cfg->payload_len = data_size;
8787         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8788         memcpy((void *)cfg->payload,
8789                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8790                data_size);
8791         if (seq)
8792                 cfg->payload_seq = *seq;
8793         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8794         cfg->wake_len = wake_size;
8795         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8796         memcpy((void *)cfg->wake_data,
8797                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8798                wake_size);
8799         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8800                          data_size + wake_size;
8801         memcpy((void *)cfg->wake_mask,
8802                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8803                wake_mask_size);
8804         if (tok) {
8805                 cfg->tokens_size = tokens_size;
8806                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8807         }
8808
8809         trig->tcp = cfg;
8810
8811         return 0;
8812 }
8813
8814 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
8815                                    const struct wiphy_wowlan_support *wowlan,
8816                                    struct nlattr *attr,
8817                                    struct cfg80211_wowlan *trig)
8818 {
8819         struct nlattr **tb;
8820         int err;
8821
8822         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
8823         if (!tb)
8824                 return -ENOMEM;
8825
8826         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
8827                 err = -EOPNOTSUPP;
8828                 goto out;
8829         }
8830
8831         err = nla_parse(tb, NL80211_ATTR_MAX,
8832                         nla_data(attr), nla_len(attr),
8833                         nl80211_policy);
8834         if (err)
8835                 goto out;
8836
8837         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
8838         err = PTR_ERR_OR_ZERO(trig->nd_config);
8839         if (err)
8840                 trig->nd_config = NULL;
8841
8842 out:
8843         kfree(tb);
8844         return err;
8845 }
8846
8847 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8848 {
8849         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8850         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8851         struct cfg80211_wowlan new_triggers = {};
8852         struct cfg80211_wowlan *ntrig;
8853         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8854         int err, i;
8855         bool prev_enabled = rdev->wiphy.wowlan_config;
8856
8857         if (!wowlan)
8858                 return -EOPNOTSUPP;
8859
8860         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8861                 cfg80211_rdev_free_wowlan(rdev);
8862                 rdev->wiphy.wowlan_config = NULL;
8863                 goto set_wakeup;
8864         }
8865
8866         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8867                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8868                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8869                         nl80211_wowlan_policy);
8870         if (err)
8871                 return err;
8872
8873         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8874                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8875                         return -EINVAL;
8876                 new_triggers.any = true;
8877         }
8878
8879         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8880                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8881                         return -EINVAL;
8882                 new_triggers.disconnect = true;
8883         }
8884
8885         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8886                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8887                         return -EINVAL;
8888                 new_triggers.magic_pkt = true;
8889         }
8890
8891         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8892                 return -EINVAL;
8893
8894         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8895                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8896                         return -EINVAL;
8897                 new_triggers.gtk_rekey_failure = true;
8898         }
8899
8900         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8901                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8902                         return -EINVAL;
8903                 new_triggers.eap_identity_req = true;
8904         }
8905
8906         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8907                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8908                         return -EINVAL;
8909                 new_triggers.four_way_handshake = true;
8910         }
8911
8912         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8913                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8914                         return -EINVAL;
8915                 new_triggers.rfkill_release = true;
8916         }
8917
8918         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8919                 struct nlattr *pat;
8920                 int n_patterns = 0;
8921                 int rem, pat_len, mask_len, pkt_offset;
8922                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8923
8924                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8925                                     rem)
8926                         n_patterns++;
8927                 if (n_patterns > wowlan->n_patterns)
8928                         return -EINVAL;
8929
8930                 new_triggers.patterns = kcalloc(n_patterns,
8931                                                 sizeof(new_triggers.patterns[0]),
8932                                                 GFP_KERNEL);
8933                 if (!new_triggers.patterns)
8934                         return -ENOMEM;
8935
8936                 new_triggers.n_patterns = n_patterns;
8937                 i = 0;
8938
8939                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8940                                     rem) {
8941                         u8 *mask_pat;
8942
8943                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8944                                   nla_len(pat), NULL);
8945                         err = -EINVAL;
8946                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8947                             !pat_tb[NL80211_PKTPAT_PATTERN])
8948                                 goto error;
8949                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8950                         mask_len = DIV_ROUND_UP(pat_len, 8);
8951                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8952                                 goto error;
8953                         if (pat_len > wowlan->pattern_max_len ||
8954                             pat_len < wowlan->pattern_min_len)
8955                                 goto error;
8956
8957                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8958                                 pkt_offset = 0;
8959                         else
8960                                 pkt_offset = nla_get_u32(
8961                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8962                         if (pkt_offset > wowlan->max_pkt_offset)
8963                                 goto error;
8964                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8965
8966                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8967                         if (!mask_pat) {
8968                                 err = -ENOMEM;
8969                                 goto error;
8970                         }
8971                         new_triggers.patterns[i].mask = mask_pat;
8972                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8973                                mask_len);
8974                         mask_pat += mask_len;
8975                         new_triggers.patterns[i].pattern = mask_pat;
8976                         new_triggers.patterns[i].pattern_len = pat_len;
8977                         memcpy(mask_pat,
8978                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8979                                pat_len);
8980                         i++;
8981                 }
8982         }
8983
8984         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8985                 err = nl80211_parse_wowlan_tcp(
8986                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8987                         &new_triggers);
8988                 if (err)
8989                         goto error;
8990         }
8991
8992         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
8993                 err = nl80211_parse_wowlan_nd(
8994                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
8995                         &new_triggers);
8996                 if (err)
8997                         goto error;
8998         }
8999
9000         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9001         if (!ntrig) {
9002                 err = -ENOMEM;
9003                 goto error;
9004         }
9005         cfg80211_rdev_free_wowlan(rdev);
9006         rdev->wiphy.wowlan_config = ntrig;
9007
9008  set_wakeup:
9009         if (rdev->ops->set_wakeup &&
9010             prev_enabled != !!rdev->wiphy.wowlan_config)
9011                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9012
9013         return 0;
9014  error:
9015         for (i = 0; i < new_triggers.n_patterns; i++)
9016                 kfree(new_triggers.patterns[i].mask);
9017         kfree(new_triggers.patterns);
9018         if (new_triggers.tcp && new_triggers.tcp->sock)
9019                 sock_release(new_triggers.tcp->sock);
9020         kfree(new_triggers.tcp);
9021         return err;
9022 }
9023 #endif
9024
9025 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9026                                        struct cfg80211_registered_device *rdev)
9027 {
9028         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9029         int i, j, pat_len;
9030         struct cfg80211_coalesce_rules *rule;
9031
9032         if (!rdev->coalesce->n_rules)
9033                 return 0;
9034
9035         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9036         if (!nl_rules)
9037                 return -ENOBUFS;
9038
9039         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9040                 nl_rule = nla_nest_start(msg, i + 1);
9041                 if (!nl_rule)
9042                         return -ENOBUFS;
9043
9044                 rule = &rdev->coalesce->rules[i];
9045                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9046                                 rule->delay))
9047                         return -ENOBUFS;
9048
9049                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9050                                 rule->condition))
9051                         return -ENOBUFS;
9052
9053                 nl_pats = nla_nest_start(msg,
9054                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9055                 if (!nl_pats)
9056                         return -ENOBUFS;
9057
9058                 for (j = 0; j < rule->n_patterns; j++) {
9059                         nl_pat = nla_nest_start(msg, j + 1);
9060                         if (!nl_pat)
9061                                 return -ENOBUFS;
9062                         pat_len = rule->patterns[j].pattern_len;
9063                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9064                                     DIV_ROUND_UP(pat_len, 8),
9065                                     rule->patterns[j].mask) ||
9066                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9067                                     rule->patterns[j].pattern) ||
9068                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9069                                         rule->patterns[j].pkt_offset))
9070                                 return -ENOBUFS;
9071                         nla_nest_end(msg, nl_pat);
9072                 }
9073                 nla_nest_end(msg, nl_pats);
9074                 nla_nest_end(msg, nl_rule);
9075         }
9076         nla_nest_end(msg, nl_rules);
9077
9078         return 0;
9079 }
9080
9081 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9082 {
9083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9084         struct sk_buff *msg;
9085         void *hdr;
9086
9087         if (!rdev->wiphy.coalesce)
9088                 return -EOPNOTSUPP;
9089
9090         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9091         if (!msg)
9092                 return -ENOMEM;
9093
9094         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9095                              NL80211_CMD_GET_COALESCE);
9096         if (!hdr)
9097                 goto nla_put_failure;
9098
9099         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9100                 goto nla_put_failure;
9101
9102         genlmsg_end(msg, hdr);
9103         return genlmsg_reply(msg, info);
9104
9105 nla_put_failure:
9106         nlmsg_free(msg);
9107         return -ENOBUFS;
9108 }
9109
9110 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9111 {
9112         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9113         int i, j;
9114         struct cfg80211_coalesce_rules *rule;
9115
9116         if (!coalesce)
9117                 return;
9118
9119         for (i = 0; i < coalesce->n_rules; i++) {
9120                 rule = &coalesce->rules[i];
9121                 for (j = 0; j < rule->n_patterns; j++)
9122                         kfree(rule->patterns[j].mask);
9123                 kfree(rule->patterns);
9124         }
9125         kfree(coalesce->rules);
9126         kfree(coalesce);
9127         rdev->coalesce = NULL;
9128 }
9129
9130 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9131                                        struct nlattr *rule,
9132                                        struct cfg80211_coalesce_rules *new_rule)
9133 {
9134         int err, i;
9135         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9136         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9137         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9138         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9139
9140         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9141                         nla_len(rule), nl80211_coalesce_policy);
9142         if (err)
9143                 return err;
9144
9145         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9146                 new_rule->delay =
9147                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9148         if (new_rule->delay > coalesce->max_delay)
9149                 return -EINVAL;
9150
9151         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9152                 new_rule->condition =
9153                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9154         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9155             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9156                 return -EINVAL;
9157
9158         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9159                 return -EINVAL;
9160
9161         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9162                             rem)
9163                 n_patterns++;
9164         if (n_patterns > coalesce->n_patterns)
9165                 return -EINVAL;
9166
9167         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9168                                      GFP_KERNEL);
9169         if (!new_rule->patterns)
9170                 return -ENOMEM;
9171
9172         new_rule->n_patterns = n_patterns;
9173         i = 0;
9174
9175         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9176                             rem) {
9177                 u8 *mask_pat;
9178
9179                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9180                           nla_len(pat), NULL);
9181                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9182                     !pat_tb[NL80211_PKTPAT_PATTERN])
9183                         return -EINVAL;
9184                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9185                 mask_len = DIV_ROUND_UP(pat_len, 8);
9186                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9187                         return -EINVAL;
9188                 if (pat_len > coalesce->pattern_max_len ||
9189                     pat_len < coalesce->pattern_min_len)
9190                         return -EINVAL;
9191
9192                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9193                         pkt_offset = 0;
9194                 else
9195                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9196                 if (pkt_offset > coalesce->max_pkt_offset)
9197                         return -EINVAL;
9198                 new_rule->patterns[i].pkt_offset = pkt_offset;
9199
9200                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9201                 if (!mask_pat)
9202                         return -ENOMEM;
9203
9204                 new_rule->patterns[i].mask = mask_pat;
9205                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9206                        mask_len);
9207
9208                 mask_pat += mask_len;
9209                 new_rule->patterns[i].pattern = mask_pat;
9210                 new_rule->patterns[i].pattern_len = pat_len;
9211                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9212                        pat_len);
9213                 i++;
9214         }
9215
9216         return 0;
9217 }
9218
9219 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9220 {
9221         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9222         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9223         struct cfg80211_coalesce new_coalesce = {};
9224         struct cfg80211_coalesce *n_coalesce;
9225         int err, rem_rule, n_rules = 0, i, j;
9226         struct nlattr *rule;
9227         struct cfg80211_coalesce_rules *tmp_rule;
9228
9229         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9230                 return -EOPNOTSUPP;
9231
9232         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9233                 cfg80211_rdev_free_coalesce(rdev);
9234                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9235                 return 0;
9236         }
9237
9238         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9239                             rem_rule)
9240                 n_rules++;
9241         if (n_rules > coalesce->n_rules)
9242                 return -EINVAL;
9243
9244         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9245                                      GFP_KERNEL);
9246         if (!new_coalesce.rules)
9247                 return -ENOMEM;
9248
9249         new_coalesce.n_rules = n_rules;
9250         i = 0;
9251
9252         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9253                             rem_rule) {
9254                 err = nl80211_parse_coalesce_rule(rdev, rule,
9255                                                   &new_coalesce.rules[i]);
9256                 if (err)
9257                         goto error;
9258
9259                 i++;
9260         }
9261
9262         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9263         if (err)
9264                 goto error;
9265
9266         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9267         if (!n_coalesce) {
9268                 err = -ENOMEM;
9269                 goto error;
9270         }
9271         cfg80211_rdev_free_coalesce(rdev);
9272         rdev->coalesce = n_coalesce;
9273
9274         return 0;
9275 error:
9276         for (i = 0; i < new_coalesce.n_rules; i++) {
9277                 tmp_rule = &new_coalesce.rules[i];
9278                 for (j = 0; j < tmp_rule->n_patterns; j++)
9279                         kfree(tmp_rule->patterns[j].mask);
9280                 kfree(tmp_rule->patterns);
9281         }
9282         kfree(new_coalesce.rules);
9283
9284         return err;
9285 }
9286
9287 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9288 {
9289         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9290         struct net_device *dev = info->user_ptr[1];
9291         struct wireless_dev *wdev = dev->ieee80211_ptr;
9292         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9293         struct cfg80211_gtk_rekey_data rekey_data;
9294         int err;
9295
9296         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9297                 return -EINVAL;
9298
9299         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9300                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9301                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9302                         nl80211_rekey_policy);
9303         if (err)
9304                 return err;
9305
9306         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9307                 return -ERANGE;
9308         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9309                 return -ERANGE;
9310         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9311                 return -ERANGE;
9312
9313         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9314         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9315         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9316
9317         wdev_lock(wdev);
9318         if (!wdev->current_bss) {
9319                 err = -ENOTCONN;
9320                 goto out;
9321         }
9322
9323         if (!rdev->ops->set_rekey_data) {
9324                 err = -EOPNOTSUPP;
9325                 goto out;
9326         }
9327
9328         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9329  out:
9330         wdev_unlock(wdev);
9331         return err;
9332 }
9333
9334 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9335                                              struct genl_info *info)
9336 {
9337         struct net_device *dev = info->user_ptr[1];
9338         struct wireless_dev *wdev = dev->ieee80211_ptr;
9339
9340         if (wdev->iftype != NL80211_IFTYPE_AP &&
9341             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9342                 return -EINVAL;
9343
9344         if (wdev->ap_unexpected_nlportid)
9345                 return -EBUSY;
9346
9347         wdev->ap_unexpected_nlportid = info->snd_portid;
9348         return 0;
9349 }
9350
9351 static int nl80211_probe_client(struct sk_buff *skb,
9352                                 struct genl_info *info)
9353 {
9354         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9355         struct net_device *dev = info->user_ptr[1];
9356         struct wireless_dev *wdev = dev->ieee80211_ptr;
9357         struct sk_buff *msg;
9358         void *hdr;
9359         const u8 *addr;
9360         u64 cookie;
9361         int err;
9362
9363         if (wdev->iftype != NL80211_IFTYPE_AP &&
9364             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9365                 return -EOPNOTSUPP;
9366
9367         if (!info->attrs[NL80211_ATTR_MAC])
9368                 return -EINVAL;
9369
9370         if (!rdev->ops->probe_client)
9371                 return -EOPNOTSUPP;
9372
9373         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9374         if (!msg)
9375                 return -ENOMEM;
9376
9377         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9378                              NL80211_CMD_PROBE_CLIENT);
9379         if (!hdr) {
9380                 err = -ENOBUFS;
9381                 goto free_msg;
9382         }
9383
9384         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9385
9386         err = rdev_probe_client(rdev, dev, addr, &cookie);
9387         if (err)
9388                 goto free_msg;
9389
9390         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9391                 goto nla_put_failure;
9392
9393         genlmsg_end(msg, hdr);
9394
9395         return genlmsg_reply(msg, info);
9396
9397  nla_put_failure:
9398         err = -ENOBUFS;
9399  free_msg:
9400         nlmsg_free(msg);
9401         return err;
9402 }
9403
9404 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9405 {
9406         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9407         struct cfg80211_beacon_registration *reg, *nreg;
9408         int rv;
9409
9410         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9411                 return -EOPNOTSUPP;
9412
9413         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9414         if (!nreg)
9415                 return -ENOMEM;
9416
9417         /* First, check if already registered. */
9418         spin_lock_bh(&rdev->beacon_registrations_lock);
9419         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9420                 if (reg->nlportid == info->snd_portid) {
9421                         rv = -EALREADY;
9422                         goto out_err;
9423                 }
9424         }
9425         /* Add it to the list */
9426         nreg->nlportid = info->snd_portid;
9427         list_add(&nreg->list, &rdev->beacon_registrations);
9428
9429         spin_unlock_bh(&rdev->beacon_registrations_lock);
9430
9431         return 0;
9432 out_err:
9433         spin_unlock_bh(&rdev->beacon_registrations_lock);
9434         kfree(nreg);
9435         return rv;
9436 }
9437
9438 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9439 {
9440         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9441         struct wireless_dev *wdev = info->user_ptr[1];
9442         int err;
9443
9444         if (!rdev->ops->start_p2p_device)
9445                 return -EOPNOTSUPP;
9446
9447         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9448                 return -EOPNOTSUPP;
9449
9450         if (wdev->p2p_started)
9451                 return 0;
9452
9453         if (rfkill_blocked(rdev->rfkill))
9454                 return -ERFKILL;
9455
9456         err = rdev_start_p2p_device(rdev, wdev);
9457         if (err)
9458                 return err;
9459
9460         wdev->p2p_started = true;
9461         rdev->opencount++;
9462
9463         return 0;
9464 }
9465
9466 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9467 {
9468         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9469         struct wireless_dev *wdev = info->user_ptr[1];
9470
9471         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9472                 return -EOPNOTSUPP;
9473
9474         if (!rdev->ops->stop_p2p_device)
9475                 return -EOPNOTSUPP;
9476
9477         cfg80211_stop_p2p_device(rdev, wdev);
9478
9479         return 0;
9480 }
9481
9482 static int nl80211_get_protocol_features(struct sk_buff *skb,
9483                                          struct genl_info *info)
9484 {
9485         void *hdr;
9486         struct sk_buff *msg;
9487
9488         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9489         if (!msg)
9490                 return -ENOMEM;
9491
9492         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9493                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9494         if (!hdr)
9495                 goto nla_put_failure;
9496
9497         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9498                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9499                 goto nla_put_failure;
9500
9501         genlmsg_end(msg, hdr);
9502         return genlmsg_reply(msg, info);
9503
9504  nla_put_failure:
9505         kfree_skb(msg);
9506         return -ENOBUFS;
9507 }
9508
9509 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9510 {
9511         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9512         struct cfg80211_update_ft_ies_params ft_params;
9513         struct net_device *dev = info->user_ptr[1];
9514
9515         if (!rdev->ops->update_ft_ies)
9516                 return -EOPNOTSUPP;
9517
9518         if (!info->attrs[NL80211_ATTR_MDID] ||
9519             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9520                 return -EINVAL;
9521
9522         memset(&ft_params, 0, sizeof(ft_params));
9523         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9524         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9525         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9526
9527         return rdev_update_ft_ies(rdev, dev, &ft_params);
9528 }
9529
9530 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9531                                        struct genl_info *info)
9532 {
9533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9534         struct wireless_dev *wdev = info->user_ptr[1];
9535         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9536         u16 duration;
9537         int ret;
9538
9539         if (!rdev->ops->crit_proto_start)
9540                 return -EOPNOTSUPP;
9541
9542         if (WARN_ON(!rdev->ops->crit_proto_stop))
9543                 return -EINVAL;
9544
9545         if (rdev->crit_proto_nlportid)
9546                 return -EBUSY;
9547
9548         /* determine protocol if provided */
9549         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9550                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9551
9552         if (proto >= NUM_NL80211_CRIT_PROTO)
9553                 return -EINVAL;
9554
9555         /* timeout must be provided */
9556         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9557                 return -EINVAL;
9558
9559         duration =
9560                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9561
9562         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9563                 return -ERANGE;
9564
9565         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9566         if (!ret)
9567                 rdev->crit_proto_nlportid = info->snd_portid;
9568
9569         return ret;
9570 }
9571
9572 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9573                                       struct genl_info *info)
9574 {
9575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9576         struct wireless_dev *wdev = info->user_ptr[1];
9577
9578         if (!rdev->ops->crit_proto_stop)
9579                 return -EOPNOTSUPP;
9580
9581         if (rdev->crit_proto_nlportid) {
9582                 rdev->crit_proto_nlportid = 0;
9583                 rdev_crit_proto_stop(rdev, wdev);
9584         }
9585         return 0;
9586 }
9587
9588 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9589 {
9590         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9591         struct wireless_dev *wdev =
9592                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9593         int i, err;
9594         u32 vid, subcmd;
9595
9596         if (!rdev->wiphy.vendor_commands)
9597                 return -EOPNOTSUPP;
9598
9599         if (IS_ERR(wdev)) {
9600                 err = PTR_ERR(wdev);
9601                 if (err != -EINVAL)
9602                         return err;
9603                 wdev = NULL;
9604         } else if (wdev->wiphy != &rdev->wiphy) {
9605                 return -EINVAL;
9606         }
9607
9608         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9609             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9610                 return -EINVAL;
9611
9612         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9613         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9614         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9615                 const struct wiphy_vendor_command *vcmd;
9616                 void *data = NULL;
9617                 int len = 0;
9618
9619                 vcmd = &rdev->wiphy.vendor_commands[i];
9620
9621                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9622                         continue;
9623
9624                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9625                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9626                         if (!wdev)
9627                                 return -EINVAL;
9628                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9629                             !wdev->netdev)
9630                                 return -EINVAL;
9631
9632                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9633                                 if (wdev->netdev &&
9634                                     !netif_running(wdev->netdev))
9635                                         return -ENETDOWN;
9636                                 if (!wdev->netdev && !wdev->p2p_started)
9637                                         return -ENETDOWN;
9638                         }
9639                 } else {
9640                         wdev = NULL;
9641                 }
9642
9643                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9644                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9645                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9646                 }
9647
9648                 rdev->cur_cmd_info = info;
9649                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9650                                                           data, len);
9651                 rdev->cur_cmd_info = NULL;
9652                 return err;
9653         }
9654
9655         return -EOPNOTSUPP;
9656 }
9657
9658 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9659                                            enum nl80211_commands cmd,
9660                                            enum nl80211_attrs attr,
9661                                            int approxlen)
9662 {
9663         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9664
9665         if (WARN_ON(!rdev->cur_cmd_info))
9666                 return NULL;
9667
9668         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9669                                            rdev->cur_cmd_info->snd_portid,
9670                                            rdev->cur_cmd_info->snd_seq,
9671                                            cmd, attr, NULL, GFP_KERNEL);
9672 }
9673 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9674
9675 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9676 {
9677         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9678         void *hdr = ((void **)skb->cb)[1];
9679         struct nlattr *data = ((void **)skb->cb)[2];
9680
9681         /* clear CB data for netlink core to own from now on */
9682         memset(skb->cb, 0, sizeof(skb->cb));
9683
9684         if (WARN_ON(!rdev->cur_cmd_info)) {
9685                 kfree_skb(skb);
9686                 return -EINVAL;
9687         }
9688
9689         nla_nest_end(skb, data);
9690         genlmsg_end(skb, hdr);
9691         return genlmsg_reply(skb, rdev->cur_cmd_info);
9692 }
9693 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9694
9695
9696 static int nl80211_set_qos_map(struct sk_buff *skb,
9697                                struct genl_info *info)
9698 {
9699         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9700         struct cfg80211_qos_map *qos_map = NULL;
9701         struct net_device *dev = info->user_ptr[1];
9702         u8 *pos, len, num_des, des_len, des;
9703         int ret;
9704
9705         if (!rdev->ops->set_qos_map)
9706                 return -EOPNOTSUPP;
9707
9708         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9709                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9710                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9711
9712                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9713                     len > IEEE80211_QOS_MAP_LEN_MAX)
9714                         return -EINVAL;
9715
9716                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9717                 if (!qos_map)
9718                         return -ENOMEM;
9719
9720                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9721                 if (num_des) {
9722                         des_len = num_des *
9723                                 sizeof(struct cfg80211_dscp_exception);
9724                         memcpy(qos_map->dscp_exception, pos, des_len);
9725                         qos_map->num_des = num_des;
9726                         for (des = 0; des < num_des; des++) {
9727                                 if (qos_map->dscp_exception[des].up > 7) {
9728                                         kfree(qos_map);
9729                                         return -EINVAL;
9730                                 }
9731                         }
9732                         pos += des_len;
9733                 }
9734                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9735         }
9736
9737         wdev_lock(dev->ieee80211_ptr);
9738         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9739         if (!ret)
9740                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9741         wdev_unlock(dev->ieee80211_ptr);
9742
9743         kfree(qos_map);
9744         return ret;
9745 }
9746
9747 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9748 {
9749         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9750         struct net_device *dev = info->user_ptr[1];
9751         struct wireless_dev *wdev = dev->ieee80211_ptr;
9752         const u8 *peer;
9753         u8 tsid, up;
9754         u16 admitted_time = 0;
9755         int err;
9756
9757         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9758                 return -EOPNOTSUPP;
9759
9760         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9761             !info->attrs[NL80211_ATTR_USER_PRIO])
9762                 return -EINVAL;
9763
9764         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9765         if (tsid >= IEEE80211_NUM_TIDS)
9766                 return -EINVAL;
9767
9768         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9769         if (up >= IEEE80211_NUM_UPS)
9770                 return -EINVAL;
9771
9772         /* WMM uses TIDs 0-7 even for TSPEC */
9773         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9774                 /* TODO: handle 802.11 TSPEC/admission control
9775                  * need more attributes for that (e.g. BA session requirement);
9776                  * change the WMM adminssion test above to allow both then
9777                  */
9778                 return -EINVAL;
9779         }
9780
9781         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9782
9783         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9784                 admitted_time =
9785                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9786                 if (!admitted_time)
9787                         return -EINVAL;
9788         }
9789
9790         wdev_lock(wdev);
9791         switch (wdev->iftype) {
9792         case NL80211_IFTYPE_STATION:
9793         case NL80211_IFTYPE_P2P_CLIENT:
9794                 if (wdev->current_bss)
9795                         break;
9796                 err = -ENOTCONN;
9797                 goto out;
9798         default:
9799                 err = -EOPNOTSUPP;
9800                 goto out;
9801         }
9802
9803         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9804
9805  out:
9806         wdev_unlock(wdev);
9807         return err;
9808 }
9809
9810 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9811 {
9812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9813         struct net_device *dev = info->user_ptr[1];
9814         struct wireless_dev *wdev = dev->ieee80211_ptr;
9815         const u8 *peer;
9816         u8 tsid;
9817         int err;
9818
9819         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9820                 return -EINVAL;
9821
9822         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9823         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9824
9825         wdev_lock(wdev);
9826         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9827         wdev_unlock(wdev);
9828
9829         return err;
9830 }
9831
9832 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
9833                                        struct genl_info *info)
9834 {
9835         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9836         struct net_device *dev = info->user_ptr[1];
9837         struct wireless_dev *wdev = dev->ieee80211_ptr;
9838         struct cfg80211_chan_def chandef = {};
9839         const u8 *addr;
9840         u8 oper_class;
9841         int err;
9842
9843         if (!rdev->ops->tdls_channel_switch ||
9844             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9845                 return -EOPNOTSUPP;
9846
9847         switch (dev->ieee80211_ptr->iftype) {
9848         case NL80211_IFTYPE_STATION:
9849         case NL80211_IFTYPE_P2P_CLIENT:
9850                 break;
9851         default:
9852                 return -EOPNOTSUPP;
9853         }
9854
9855         if (!info->attrs[NL80211_ATTR_MAC] ||
9856             !info->attrs[NL80211_ATTR_OPER_CLASS])
9857                 return -EINVAL;
9858
9859         err = nl80211_parse_chandef(rdev, info, &chandef);
9860         if (err)
9861                 return err;
9862
9863         /*
9864          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
9865          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
9866          * specification is not defined for them.
9867          */
9868         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
9869             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
9870             chandef.width != NL80211_CHAN_WIDTH_20)
9871                 return -EINVAL;
9872
9873         /* we will be active on the TDLS link */
9874         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
9875                 return -EINVAL;
9876
9877         /* don't allow switching to DFS channels */
9878         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
9879                 return -EINVAL;
9880
9881         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9882         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
9883
9884         wdev_lock(wdev);
9885         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
9886         wdev_unlock(wdev);
9887
9888         return err;
9889 }
9890
9891 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
9892                                               struct genl_info *info)
9893 {
9894         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9895         struct net_device *dev = info->user_ptr[1];
9896         struct wireless_dev *wdev = dev->ieee80211_ptr;
9897         const u8 *addr;
9898
9899         if (!rdev->ops->tdls_channel_switch ||
9900             !rdev->ops->tdls_cancel_channel_switch ||
9901             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9902                 return -EOPNOTSUPP;
9903
9904         switch (dev->ieee80211_ptr->iftype) {
9905         case NL80211_IFTYPE_STATION:
9906         case NL80211_IFTYPE_P2P_CLIENT:
9907                 break;
9908         default:
9909                 return -EOPNOTSUPP;
9910         }
9911
9912         if (!info->attrs[NL80211_ATTR_MAC])
9913                 return -EINVAL;
9914
9915         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9916
9917         wdev_lock(wdev);
9918         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
9919         wdev_unlock(wdev);
9920
9921         return 0;
9922 }
9923
9924 #define NL80211_FLAG_NEED_WIPHY         0x01
9925 #define NL80211_FLAG_NEED_NETDEV        0x02
9926 #define NL80211_FLAG_NEED_RTNL          0x04
9927 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
9928 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
9929                                          NL80211_FLAG_CHECK_NETDEV_UP)
9930 #define NL80211_FLAG_NEED_WDEV          0x10
9931 /* If a netdev is associated, it must be UP, P2P must be started */
9932 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
9933                                          NL80211_FLAG_CHECK_NETDEV_UP)
9934 #define NL80211_FLAG_CLEAR_SKB          0x20
9935
9936 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9937                             struct genl_info *info)
9938 {
9939         struct cfg80211_registered_device *rdev;
9940         struct wireless_dev *wdev;
9941         struct net_device *dev;
9942         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9943
9944         if (rtnl)
9945                 rtnl_lock();
9946
9947         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9948                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9949                 if (IS_ERR(rdev)) {
9950                         if (rtnl)
9951                                 rtnl_unlock();
9952                         return PTR_ERR(rdev);
9953                 }
9954                 info->user_ptr[0] = rdev;
9955         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9956                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9957                 ASSERT_RTNL();
9958
9959                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9960                                                   info->attrs);
9961                 if (IS_ERR(wdev)) {
9962                         if (rtnl)
9963                                 rtnl_unlock();
9964                         return PTR_ERR(wdev);
9965                 }
9966
9967                 dev = wdev->netdev;
9968                 rdev = wiphy_to_rdev(wdev->wiphy);
9969
9970                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9971                         if (!dev) {
9972                                 if (rtnl)
9973                                         rtnl_unlock();
9974                                 return -EINVAL;
9975                         }
9976
9977                         info->user_ptr[1] = dev;
9978                 } else {
9979                         info->user_ptr[1] = wdev;
9980                 }
9981
9982                 if (dev) {
9983                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9984                             !netif_running(dev)) {
9985                                 if (rtnl)
9986                                         rtnl_unlock();
9987                                 return -ENETDOWN;
9988                         }
9989
9990                         dev_hold(dev);
9991                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9992                         if (!wdev->p2p_started) {
9993                                 if (rtnl)
9994                                         rtnl_unlock();
9995                                 return -ENETDOWN;
9996                         }
9997                 }
9998
9999                 info->user_ptr[0] = rdev;
10000         }
10001
10002         return 0;
10003 }
10004
10005 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10006                               struct genl_info *info)
10007 {
10008         if (info->user_ptr[1]) {
10009                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10010                         struct wireless_dev *wdev = info->user_ptr[1];
10011
10012                         if (wdev->netdev)
10013                                 dev_put(wdev->netdev);
10014                 } else {
10015                         dev_put(info->user_ptr[1]);
10016                 }
10017         }
10018
10019         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10020                 rtnl_unlock();
10021
10022         /* If needed, clear the netlink message payload from the SKB
10023          * as it might contain key data that shouldn't stick around on
10024          * the heap after the SKB is freed. The netlink message header
10025          * is still needed for further processing, so leave it intact.
10026          */
10027         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10028                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10029
10030                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10031         }
10032 }
10033
10034 static const struct genl_ops nl80211_ops[] = {
10035         {
10036                 .cmd = NL80211_CMD_GET_WIPHY,
10037                 .doit = nl80211_get_wiphy,
10038                 .dumpit = nl80211_dump_wiphy,
10039                 .done = nl80211_dump_wiphy_done,
10040                 .policy = nl80211_policy,
10041                 /* can be retrieved by unprivileged users */
10042                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10043                                   NL80211_FLAG_NEED_RTNL,
10044         },
10045         {
10046                 .cmd = NL80211_CMD_SET_WIPHY,
10047                 .doit = nl80211_set_wiphy,
10048                 .policy = nl80211_policy,
10049                 .flags = GENL_ADMIN_PERM,
10050                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10051         },
10052         {
10053                 .cmd = NL80211_CMD_GET_INTERFACE,
10054                 .doit = nl80211_get_interface,
10055                 .dumpit = nl80211_dump_interface,
10056                 .policy = nl80211_policy,
10057                 /* can be retrieved by unprivileged users */
10058                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10059                                   NL80211_FLAG_NEED_RTNL,
10060         },
10061         {
10062                 .cmd = NL80211_CMD_SET_INTERFACE,
10063                 .doit = nl80211_set_interface,
10064                 .policy = nl80211_policy,
10065                 .flags = GENL_ADMIN_PERM,
10066                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10067                                   NL80211_FLAG_NEED_RTNL,
10068         },
10069         {
10070                 .cmd = NL80211_CMD_NEW_INTERFACE,
10071                 .doit = nl80211_new_interface,
10072                 .policy = nl80211_policy,
10073                 .flags = GENL_ADMIN_PERM,
10074                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10075                                   NL80211_FLAG_NEED_RTNL,
10076         },
10077         {
10078                 .cmd = NL80211_CMD_DEL_INTERFACE,
10079                 .doit = nl80211_del_interface,
10080                 .policy = nl80211_policy,
10081                 .flags = GENL_ADMIN_PERM,
10082                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10083                                   NL80211_FLAG_NEED_RTNL,
10084         },
10085         {
10086                 .cmd = NL80211_CMD_GET_KEY,
10087                 .doit = nl80211_get_key,
10088                 .policy = nl80211_policy,
10089                 .flags = GENL_ADMIN_PERM,
10090                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10091                                   NL80211_FLAG_NEED_RTNL,
10092         },
10093         {
10094                 .cmd = NL80211_CMD_SET_KEY,
10095                 .doit = nl80211_set_key,
10096                 .policy = nl80211_policy,
10097                 .flags = GENL_ADMIN_PERM,
10098                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10099                                   NL80211_FLAG_NEED_RTNL |
10100                                   NL80211_FLAG_CLEAR_SKB,
10101         },
10102         {
10103                 .cmd = NL80211_CMD_NEW_KEY,
10104                 .doit = nl80211_new_key,
10105                 .policy = nl80211_policy,
10106                 .flags = GENL_ADMIN_PERM,
10107                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10108                                   NL80211_FLAG_NEED_RTNL |
10109                                   NL80211_FLAG_CLEAR_SKB,
10110         },
10111         {
10112                 .cmd = NL80211_CMD_DEL_KEY,
10113                 .doit = nl80211_del_key,
10114                 .policy = nl80211_policy,
10115                 .flags = GENL_ADMIN_PERM,
10116                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10117                                   NL80211_FLAG_NEED_RTNL,
10118         },
10119         {
10120                 .cmd = NL80211_CMD_SET_BEACON,
10121                 .policy = nl80211_policy,
10122                 .flags = GENL_ADMIN_PERM,
10123                 .doit = nl80211_set_beacon,
10124                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10125                                   NL80211_FLAG_NEED_RTNL,
10126         },
10127         {
10128                 .cmd = NL80211_CMD_START_AP,
10129                 .policy = nl80211_policy,
10130                 .flags = GENL_ADMIN_PERM,
10131                 .doit = nl80211_start_ap,
10132                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10133                                   NL80211_FLAG_NEED_RTNL,
10134         },
10135         {
10136                 .cmd = NL80211_CMD_STOP_AP,
10137                 .policy = nl80211_policy,
10138                 .flags = GENL_ADMIN_PERM,
10139                 .doit = nl80211_stop_ap,
10140                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10141                                   NL80211_FLAG_NEED_RTNL,
10142         },
10143         {
10144                 .cmd = NL80211_CMD_GET_STATION,
10145                 .doit = nl80211_get_station,
10146                 .dumpit = nl80211_dump_station,
10147                 .policy = nl80211_policy,
10148                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10149                                   NL80211_FLAG_NEED_RTNL,
10150         },
10151         {
10152                 .cmd = NL80211_CMD_SET_STATION,
10153                 .doit = nl80211_set_station,
10154                 .policy = nl80211_policy,
10155                 .flags = GENL_ADMIN_PERM,
10156                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10157                                   NL80211_FLAG_NEED_RTNL,
10158         },
10159         {
10160                 .cmd = NL80211_CMD_NEW_STATION,
10161                 .doit = nl80211_new_station,
10162                 .policy = nl80211_policy,
10163                 .flags = GENL_ADMIN_PERM,
10164                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10165                                   NL80211_FLAG_NEED_RTNL,
10166         },
10167         {
10168                 .cmd = NL80211_CMD_DEL_STATION,
10169                 .doit = nl80211_del_station,
10170                 .policy = nl80211_policy,
10171                 .flags = GENL_ADMIN_PERM,
10172                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10173                                   NL80211_FLAG_NEED_RTNL,
10174         },
10175         {
10176                 .cmd = NL80211_CMD_GET_MPATH,
10177                 .doit = nl80211_get_mpath,
10178                 .dumpit = nl80211_dump_mpath,
10179                 .policy = nl80211_policy,
10180                 .flags = GENL_ADMIN_PERM,
10181                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10182                                   NL80211_FLAG_NEED_RTNL,
10183         },
10184         {
10185                 .cmd = NL80211_CMD_GET_MPP,
10186                 .doit = nl80211_get_mpp,
10187                 .dumpit = nl80211_dump_mpp,
10188                 .policy = nl80211_policy,
10189                 .flags = GENL_ADMIN_PERM,
10190                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10191                                   NL80211_FLAG_NEED_RTNL,
10192         },
10193         {
10194                 .cmd = NL80211_CMD_SET_MPATH,
10195                 .doit = nl80211_set_mpath,
10196                 .policy = nl80211_policy,
10197                 .flags = GENL_ADMIN_PERM,
10198                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10199                                   NL80211_FLAG_NEED_RTNL,
10200         },
10201         {
10202                 .cmd = NL80211_CMD_NEW_MPATH,
10203                 .doit = nl80211_new_mpath,
10204                 .policy = nl80211_policy,
10205                 .flags = GENL_ADMIN_PERM,
10206                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10207                                   NL80211_FLAG_NEED_RTNL,
10208         },
10209         {
10210                 .cmd = NL80211_CMD_DEL_MPATH,
10211                 .doit = nl80211_del_mpath,
10212                 .policy = nl80211_policy,
10213                 .flags = GENL_ADMIN_PERM,
10214                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10215                                   NL80211_FLAG_NEED_RTNL,
10216         },
10217         {
10218                 .cmd = NL80211_CMD_SET_BSS,
10219                 .doit = nl80211_set_bss,
10220                 .policy = nl80211_policy,
10221                 .flags = GENL_ADMIN_PERM,
10222                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10223                                   NL80211_FLAG_NEED_RTNL,
10224         },
10225         {
10226                 .cmd = NL80211_CMD_GET_REG,
10227                 .doit = nl80211_get_reg,
10228                 .policy = nl80211_policy,
10229                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10230                 /* can be retrieved by unprivileged users */
10231         },
10232         {
10233                 .cmd = NL80211_CMD_SET_REG,
10234                 .doit = nl80211_set_reg,
10235                 .policy = nl80211_policy,
10236                 .flags = GENL_ADMIN_PERM,
10237                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10238         },
10239         {
10240                 .cmd = NL80211_CMD_REQ_SET_REG,
10241                 .doit = nl80211_req_set_reg,
10242                 .policy = nl80211_policy,
10243                 .flags = GENL_ADMIN_PERM,
10244         },
10245         {
10246                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10247                 .doit = nl80211_get_mesh_config,
10248                 .policy = nl80211_policy,
10249                 /* can be retrieved by unprivileged users */
10250                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10251                                   NL80211_FLAG_NEED_RTNL,
10252         },
10253         {
10254                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10255                 .doit = nl80211_update_mesh_config,
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_TRIGGER_SCAN,
10263                 .doit = nl80211_trigger_scan,
10264                 .policy = nl80211_policy,
10265                 .flags = GENL_ADMIN_PERM,
10266                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10267                                   NL80211_FLAG_NEED_RTNL,
10268         },
10269         {
10270                 .cmd = NL80211_CMD_GET_SCAN,
10271                 .policy = nl80211_policy,
10272                 .dumpit = nl80211_dump_scan,
10273         },
10274         {
10275                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10276                 .doit = nl80211_start_sched_scan,
10277                 .policy = nl80211_policy,
10278                 .flags = GENL_ADMIN_PERM,
10279                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10280                                   NL80211_FLAG_NEED_RTNL,
10281         },
10282         {
10283                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10284                 .doit = nl80211_stop_sched_scan,
10285                 .policy = nl80211_policy,
10286                 .flags = GENL_ADMIN_PERM,
10287                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10288                                   NL80211_FLAG_NEED_RTNL,
10289         },
10290         {
10291                 .cmd = NL80211_CMD_AUTHENTICATE,
10292                 .doit = nl80211_authenticate,
10293                 .policy = nl80211_policy,
10294                 .flags = GENL_ADMIN_PERM,
10295                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10296                                   NL80211_FLAG_NEED_RTNL |
10297                                   NL80211_FLAG_CLEAR_SKB,
10298         },
10299         {
10300                 .cmd = NL80211_CMD_ASSOCIATE,
10301                 .doit = nl80211_associate,
10302                 .policy = nl80211_policy,
10303                 .flags = GENL_ADMIN_PERM,
10304                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10305                                   NL80211_FLAG_NEED_RTNL,
10306         },
10307         {
10308                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10309                 .doit = nl80211_deauthenticate,
10310                 .policy = nl80211_policy,
10311                 .flags = GENL_ADMIN_PERM,
10312                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10313                                   NL80211_FLAG_NEED_RTNL,
10314         },
10315         {
10316                 .cmd = NL80211_CMD_DISASSOCIATE,
10317                 .doit = nl80211_disassociate,
10318                 .policy = nl80211_policy,
10319                 .flags = GENL_ADMIN_PERM,
10320                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10321                                   NL80211_FLAG_NEED_RTNL,
10322         },
10323         {
10324                 .cmd = NL80211_CMD_JOIN_IBSS,
10325                 .doit = nl80211_join_ibss,
10326                 .policy = nl80211_policy,
10327                 .flags = GENL_ADMIN_PERM,
10328                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10329                                   NL80211_FLAG_NEED_RTNL,
10330         },
10331         {
10332                 .cmd = NL80211_CMD_LEAVE_IBSS,
10333                 .doit = nl80211_leave_ibss,
10334                 .policy = nl80211_policy,
10335                 .flags = GENL_ADMIN_PERM,
10336                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10337                                   NL80211_FLAG_NEED_RTNL,
10338         },
10339 #ifdef CONFIG_NL80211_TESTMODE
10340         {
10341                 .cmd = NL80211_CMD_TESTMODE,
10342                 .doit = nl80211_testmode_do,
10343                 .dumpit = nl80211_testmode_dump,
10344                 .policy = nl80211_policy,
10345                 .flags = GENL_ADMIN_PERM,
10346                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10347                                   NL80211_FLAG_NEED_RTNL,
10348         },
10349 #endif
10350         {
10351                 .cmd = NL80211_CMD_CONNECT,
10352                 .doit = nl80211_connect,
10353                 .policy = nl80211_policy,
10354                 .flags = GENL_ADMIN_PERM,
10355                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10356                                   NL80211_FLAG_NEED_RTNL,
10357         },
10358         {
10359                 .cmd = NL80211_CMD_DISCONNECT,
10360                 .doit = nl80211_disconnect,
10361                 .policy = nl80211_policy,
10362                 .flags = GENL_ADMIN_PERM,
10363                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10364                                   NL80211_FLAG_NEED_RTNL,
10365         },
10366         {
10367                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10368                 .doit = nl80211_wiphy_netns,
10369                 .policy = nl80211_policy,
10370                 .flags = GENL_ADMIN_PERM,
10371                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10372                                   NL80211_FLAG_NEED_RTNL,
10373         },
10374         {
10375                 .cmd = NL80211_CMD_GET_SURVEY,
10376                 .policy = nl80211_policy,
10377                 .dumpit = nl80211_dump_survey,
10378         },
10379         {
10380                 .cmd = NL80211_CMD_SET_PMKSA,
10381                 .doit = nl80211_setdel_pmksa,
10382                 .policy = nl80211_policy,
10383                 .flags = GENL_ADMIN_PERM,
10384                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10385                                   NL80211_FLAG_NEED_RTNL,
10386         },
10387         {
10388                 .cmd = NL80211_CMD_DEL_PMKSA,
10389                 .doit = nl80211_setdel_pmksa,
10390                 .policy = nl80211_policy,
10391                 .flags = GENL_ADMIN_PERM,
10392                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10393                                   NL80211_FLAG_NEED_RTNL,
10394         },
10395         {
10396                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10397                 .doit = nl80211_flush_pmksa,
10398                 .policy = nl80211_policy,
10399                 .flags = GENL_ADMIN_PERM,
10400                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10401                                   NL80211_FLAG_NEED_RTNL,
10402         },
10403         {
10404                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10405                 .doit = nl80211_remain_on_channel,
10406                 .policy = nl80211_policy,
10407                 .flags = GENL_ADMIN_PERM,
10408                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10409                                   NL80211_FLAG_NEED_RTNL,
10410         },
10411         {
10412                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10413                 .doit = nl80211_cancel_remain_on_channel,
10414                 .policy = nl80211_policy,
10415                 .flags = GENL_ADMIN_PERM,
10416                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10417                                   NL80211_FLAG_NEED_RTNL,
10418         },
10419         {
10420                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10421                 .doit = nl80211_set_tx_bitrate_mask,
10422                 .policy = nl80211_policy,
10423                 .flags = GENL_ADMIN_PERM,
10424                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10425                                   NL80211_FLAG_NEED_RTNL,
10426         },
10427         {
10428                 .cmd = NL80211_CMD_REGISTER_FRAME,
10429                 .doit = nl80211_register_mgmt,
10430                 .policy = nl80211_policy,
10431                 .flags = GENL_ADMIN_PERM,
10432                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10433                                   NL80211_FLAG_NEED_RTNL,
10434         },
10435         {
10436                 .cmd = NL80211_CMD_FRAME,
10437                 .doit = nl80211_tx_mgmt,
10438                 .policy = nl80211_policy,
10439                 .flags = GENL_ADMIN_PERM,
10440                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10441                                   NL80211_FLAG_NEED_RTNL,
10442         },
10443         {
10444                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10445                 .doit = nl80211_tx_mgmt_cancel_wait,
10446                 .policy = nl80211_policy,
10447                 .flags = GENL_ADMIN_PERM,
10448                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10449                                   NL80211_FLAG_NEED_RTNL,
10450         },
10451         {
10452                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10453                 .doit = nl80211_set_power_save,
10454                 .policy = nl80211_policy,
10455                 .flags = GENL_ADMIN_PERM,
10456                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10457                                   NL80211_FLAG_NEED_RTNL,
10458         },
10459         {
10460                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10461                 .doit = nl80211_get_power_save,
10462                 .policy = nl80211_policy,
10463                 /* can be retrieved by unprivileged users */
10464                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10465                                   NL80211_FLAG_NEED_RTNL,
10466         },
10467         {
10468                 .cmd = NL80211_CMD_SET_CQM,
10469                 .doit = nl80211_set_cqm,
10470                 .policy = nl80211_policy,
10471                 .flags = GENL_ADMIN_PERM,
10472                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10473                                   NL80211_FLAG_NEED_RTNL,
10474         },
10475         {
10476                 .cmd = NL80211_CMD_SET_CHANNEL,
10477                 .doit = nl80211_set_channel,
10478                 .policy = nl80211_policy,
10479                 .flags = GENL_ADMIN_PERM,
10480                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10481                                   NL80211_FLAG_NEED_RTNL,
10482         },
10483         {
10484                 .cmd = NL80211_CMD_SET_WDS_PEER,
10485                 .doit = nl80211_set_wds_peer,
10486                 .policy = nl80211_policy,
10487                 .flags = GENL_ADMIN_PERM,
10488                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10489                                   NL80211_FLAG_NEED_RTNL,
10490         },
10491         {
10492                 .cmd = NL80211_CMD_JOIN_MESH,
10493                 .doit = nl80211_join_mesh,
10494                 .policy = nl80211_policy,
10495                 .flags = GENL_ADMIN_PERM,
10496                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10497                                   NL80211_FLAG_NEED_RTNL,
10498         },
10499         {
10500                 .cmd = NL80211_CMD_LEAVE_MESH,
10501                 .doit = nl80211_leave_mesh,
10502                 .policy = nl80211_policy,
10503                 .flags = GENL_ADMIN_PERM,
10504                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10505                                   NL80211_FLAG_NEED_RTNL,
10506         },
10507         {
10508                 .cmd = NL80211_CMD_JOIN_OCB,
10509                 .doit = nl80211_join_ocb,
10510                 .policy = nl80211_policy,
10511                 .flags = GENL_ADMIN_PERM,
10512                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10513                                   NL80211_FLAG_NEED_RTNL,
10514         },
10515         {
10516                 .cmd = NL80211_CMD_LEAVE_OCB,
10517                 .doit = nl80211_leave_ocb,
10518                 .policy = nl80211_policy,
10519                 .flags = GENL_ADMIN_PERM,
10520                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10521                                   NL80211_FLAG_NEED_RTNL,
10522         },
10523 #ifdef CONFIG_PM
10524         {
10525                 .cmd = NL80211_CMD_GET_WOWLAN,
10526                 .doit = nl80211_get_wowlan,
10527                 .policy = nl80211_policy,
10528                 /* can be retrieved by unprivileged users */
10529                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10530                                   NL80211_FLAG_NEED_RTNL,
10531         },
10532         {
10533                 .cmd = NL80211_CMD_SET_WOWLAN,
10534                 .doit = nl80211_set_wowlan,
10535                 .policy = nl80211_policy,
10536                 .flags = GENL_ADMIN_PERM,
10537                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10538                                   NL80211_FLAG_NEED_RTNL,
10539         },
10540 #endif
10541         {
10542                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10543                 .doit = nl80211_set_rekey_data,
10544                 .policy = nl80211_policy,
10545                 .flags = GENL_ADMIN_PERM,
10546                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10547                                   NL80211_FLAG_NEED_RTNL |
10548                                   NL80211_FLAG_CLEAR_SKB,
10549         },
10550         {
10551                 .cmd = NL80211_CMD_TDLS_MGMT,
10552                 .doit = nl80211_tdls_mgmt,
10553                 .policy = nl80211_policy,
10554                 .flags = GENL_ADMIN_PERM,
10555                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10556                                   NL80211_FLAG_NEED_RTNL,
10557         },
10558         {
10559                 .cmd = NL80211_CMD_TDLS_OPER,
10560                 .doit = nl80211_tdls_oper,
10561                 .policy = nl80211_policy,
10562                 .flags = GENL_ADMIN_PERM,
10563                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10564                                   NL80211_FLAG_NEED_RTNL,
10565         },
10566         {
10567                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10568                 .doit = nl80211_register_unexpected_frame,
10569                 .policy = nl80211_policy,
10570                 .flags = GENL_ADMIN_PERM,
10571                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10572                                   NL80211_FLAG_NEED_RTNL,
10573         },
10574         {
10575                 .cmd = NL80211_CMD_PROBE_CLIENT,
10576                 .doit = nl80211_probe_client,
10577                 .policy = nl80211_policy,
10578                 .flags = GENL_ADMIN_PERM,
10579                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10580                                   NL80211_FLAG_NEED_RTNL,
10581         },
10582         {
10583                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10584                 .doit = nl80211_register_beacons,
10585                 .policy = nl80211_policy,
10586                 .flags = GENL_ADMIN_PERM,
10587                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10588                                   NL80211_FLAG_NEED_RTNL,
10589         },
10590         {
10591                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10592                 .doit = nl80211_set_noack_map,
10593                 .policy = nl80211_policy,
10594                 .flags = GENL_ADMIN_PERM,
10595                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10596                                   NL80211_FLAG_NEED_RTNL,
10597         },
10598         {
10599                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10600                 .doit = nl80211_start_p2p_device,
10601                 .policy = nl80211_policy,
10602                 .flags = GENL_ADMIN_PERM,
10603                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10604                                   NL80211_FLAG_NEED_RTNL,
10605         },
10606         {
10607                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10608                 .doit = nl80211_stop_p2p_device,
10609                 .policy = nl80211_policy,
10610                 .flags = GENL_ADMIN_PERM,
10611                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10612                                   NL80211_FLAG_NEED_RTNL,
10613         },
10614         {
10615                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10616                 .doit = nl80211_set_mcast_rate,
10617                 .policy = nl80211_policy,
10618                 .flags = GENL_ADMIN_PERM,
10619                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10620                                   NL80211_FLAG_NEED_RTNL,
10621         },
10622         {
10623                 .cmd = NL80211_CMD_SET_MAC_ACL,
10624                 .doit = nl80211_set_mac_acl,
10625                 .policy = nl80211_policy,
10626                 .flags = GENL_ADMIN_PERM,
10627                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10628                                   NL80211_FLAG_NEED_RTNL,
10629         },
10630         {
10631                 .cmd = NL80211_CMD_RADAR_DETECT,
10632                 .doit = nl80211_start_radar_detection,
10633                 .policy = nl80211_policy,
10634                 .flags = GENL_ADMIN_PERM,
10635                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10636                                   NL80211_FLAG_NEED_RTNL,
10637         },
10638         {
10639                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10640                 .doit = nl80211_get_protocol_features,
10641                 .policy = nl80211_policy,
10642         },
10643         {
10644                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10645                 .doit = nl80211_update_ft_ies,
10646                 .policy = nl80211_policy,
10647                 .flags = GENL_ADMIN_PERM,
10648                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10649                                   NL80211_FLAG_NEED_RTNL,
10650         },
10651         {
10652                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10653                 .doit = nl80211_crit_protocol_start,
10654                 .policy = nl80211_policy,
10655                 .flags = GENL_ADMIN_PERM,
10656                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10657                                   NL80211_FLAG_NEED_RTNL,
10658         },
10659         {
10660                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10661                 .doit = nl80211_crit_protocol_stop,
10662                 .policy = nl80211_policy,
10663                 .flags = GENL_ADMIN_PERM,
10664                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10665                                   NL80211_FLAG_NEED_RTNL,
10666         },
10667         {
10668                 .cmd = NL80211_CMD_GET_COALESCE,
10669                 .doit = nl80211_get_coalesce,
10670                 .policy = nl80211_policy,
10671                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10672                                   NL80211_FLAG_NEED_RTNL,
10673         },
10674         {
10675                 .cmd = NL80211_CMD_SET_COALESCE,
10676                 .doit = nl80211_set_coalesce,
10677                 .policy = nl80211_policy,
10678                 .flags = GENL_ADMIN_PERM,
10679                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10680                                   NL80211_FLAG_NEED_RTNL,
10681         },
10682         {
10683                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10684                 .doit = nl80211_channel_switch,
10685                 .policy = nl80211_policy,
10686                 .flags = GENL_ADMIN_PERM,
10687                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10688                                   NL80211_FLAG_NEED_RTNL,
10689         },
10690         {
10691                 .cmd = NL80211_CMD_VENDOR,
10692                 .doit = nl80211_vendor_cmd,
10693                 .policy = nl80211_policy,
10694                 .flags = GENL_ADMIN_PERM,
10695                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10696                                   NL80211_FLAG_NEED_RTNL,
10697         },
10698         {
10699                 .cmd = NL80211_CMD_SET_QOS_MAP,
10700                 .doit = nl80211_set_qos_map,
10701                 .policy = nl80211_policy,
10702                 .flags = GENL_ADMIN_PERM,
10703                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10704                                   NL80211_FLAG_NEED_RTNL,
10705         },
10706         {
10707                 .cmd = NL80211_CMD_ADD_TX_TS,
10708                 .doit = nl80211_add_tx_ts,
10709                 .policy = nl80211_policy,
10710                 .flags = GENL_ADMIN_PERM,
10711                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10712                                   NL80211_FLAG_NEED_RTNL,
10713         },
10714         {
10715                 .cmd = NL80211_CMD_DEL_TX_TS,
10716                 .doit = nl80211_del_tx_ts,
10717                 .policy = nl80211_policy,
10718                 .flags = GENL_ADMIN_PERM,
10719                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10720                                   NL80211_FLAG_NEED_RTNL,
10721         },
10722         {
10723                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10724                 .doit = nl80211_tdls_channel_switch,
10725                 .policy = nl80211_policy,
10726                 .flags = GENL_ADMIN_PERM,
10727                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10728                                   NL80211_FLAG_NEED_RTNL,
10729         },
10730         {
10731                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10732                 .doit = nl80211_tdls_cancel_channel_switch,
10733                 .policy = nl80211_policy,
10734                 .flags = GENL_ADMIN_PERM,
10735                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10736                                   NL80211_FLAG_NEED_RTNL,
10737         },
10738 };
10739
10740 /* notification functions */
10741
10742 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10743                           enum nl80211_commands cmd)
10744 {
10745         struct sk_buff *msg;
10746         struct nl80211_dump_wiphy_state state = {};
10747
10748         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10749                 cmd != NL80211_CMD_DEL_WIPHY);
10750
10751         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10752         if (!msg)
10753                 return;
10754
10755         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10756                 nlmsg_free(msg);
10757                 return;
10758         }
10759
10760         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10761                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10762 }
10763
10764 static int nl80211_add_scan_req(struct sk_buff *msg,
10765                                 struct cfg80211_registered_device *rdev)
10766 {
10767         struct cfg80211_scan_request *req = rdev->scan_req;
10768         struct nlattr *nest;
10769         int i;
10770
10771         if (WARN_ON(!req))
10772                 return 0;
10773
10774         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10775         if (!nest)
10776                 goto nla_put_failure;
10777         for (i = 0; i < req->n_ssids; i++) {
10778                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10779                         goto nla_put_failure;
10780         }
10781         nla_nest_end(msg, nest);
10782
10783         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10784         if (!nest)
10785                 goto nla_put_failure;
10786         for (i = 0; i < req->n_channels; i++) {
10787                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10788                         goto nla_put_failure;
10789         }
10790         nla_nest_end(msg, nest);
10791
10792         if (req->ie &&
10793             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10794                 goto nla_put_failure;
10795
10796         if (req->flags &&
10797             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10798                 goto nla_put_failure;
10799
10800         return 0;
10801  nla_put_failure:
10802         return -ENOBUFS;
10803 }
10804
10805 static int nl80211_send_scan_msg(struct sk_buff *msg,
10806                                  struct cfg80211_registered_device *rdev,
10807                                  struct wireless_dev *wdev,
10808                                  u32 portid, u32 seq, int flags,
10809                                  u32 cmd)
10810 {
10811         void *hdr;
10812
10813         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10814         if (!hdr)
10815                 return -1;
10816
10817         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10818             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10819                                          wdev->netdev->ifindex)) ||
10820             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10821                 goto nla_put_failure;
10822
10823         /* ignore errors and send incomplete event anyway */
10824         nl80211_add_scan_req(msg, rdev);
10825
10826         return genlmsg_end(msg, hdr);
10827
10828  nla_put_failure:
10829         genlmsg_cancel(msg, hdr);
10830         return -EMSGSIZE;
10831 }
10832
10833 static int
10834 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10835                             struct cfg80211_registered_device *rdev,
10836                             struct net_device *netdev,
10837                             u32 portid, u32 seq, int flags, u32 cmd)
10838 {
10839         void *hdr;
10840
10841         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10842         if (!hdr)
10843                 return -1;
10844
10845         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10846             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10847                 goto nla_put_failure;
10848
10849         return genlmsg_end(msg, hdr);
10850
10851  nla_put_failure:
10852         genlmsg_cancel(msg, hdr);
10853         return -EMSGSIZE;
10854 }
10855
10856 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10857                              struct wireless_dev *wdev)
10858 {
10859         struct sk_buff *msg;
10860
10861         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10862         if (!msg)
10863                 return;
10864
10865         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10866                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
10867                 nlmsg_free(msg);
10868                 return;
10869         }
10870
10871         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10872                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10873 }
10874
10875 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10876                                        struct wireless_dev *wdev, bool aborted)
10877 {
10878         struct sk_buff *msg;
10879
10880         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10881         if (!msg)
10882                 return NULL;
10883
10884         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10885                                   aborted ? NL80211_CMD_SCAN_ABORTED :
10886                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10887                 nlmsg_free(msg);
10888                 return NULL;
10889         }
10890
10891         return msg;
10892 }
10893
10894 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10895                               struct sk_buff *msg)
10896 {
10897         if (!msg)
10898                 return;
10899
10900         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10901                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10902 }
10903
10904 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10905                                      struct net_device *netdev)
10906 {
10907         struct sk_buff *msg;
10908
10909         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10910         if (!msg)
10911                 return;
10912
10913         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10914                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10915                 nlmsg_free(msg);
10916                 return;
10917         }
10918
10919         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10920                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10921 }
10922
10923 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10924                              struct net_device *netdev, u32 cmd)
10925 {
10926         struct sk_buff *msg;
10927
10928         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10929         if (!msg)
10930                 return;
10931
10932         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10933                 nlmsg_free(msg);
10934                 return;
10935         }
10936
10937         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10938                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10939 }
10940
10941 /*
10942  * This can happen on global regulatory changes or device specific settings
10943  * based on custom world regulatory domains.
10944  */
10945 void nl80211_send_reg_change_event(struct regulatory_request *request)
10946 {
10947         struct sk_buff *msg;
10948         void *hdr;
10949
10950         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10951         if (!msg)
10952                 return;
10953
10954         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10955         if (!hdr) {
10956                 nlmsg_free(msg);
10957                 return;
10958         }
10959
10960         /* Userspace can always count this one always being set */
10961         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10962                 goto nla_put_failure;
10963
10964         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10965                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10966                                NL80211_REGDOM_TYPE_WORLD))
10967                         goto nla_put_failure;
10968         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10969                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10970                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10971                         goto nla_put_failure;
10972         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10973                    request->intersect) {
10974                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10975                                NL80211_REGDOM_TYPE_INTERSECTION))
10976                         goto nla_put_failure;
10977         } else {
10978                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10979                                NL80211_REGDOM_TYPE_COUNTRY) ||
10980                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10981                                    request->alpha2))
10982                         goto nla_put_failure;
10983         }
10984
10985         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10986             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10987                 goto nla_put_failure;
10988
10989         genlmsg_end(msg, hdr);
10990
10991         rcu_read_lock();
10992         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10993                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10994         rcu_read_unlock();
10995
10996         return;
10997
10998 nla_put_failure:
10999         genlmsg_cancel(msg, hdr);
11000         nlmsg_free(msg);
11001 }
11002
11003 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11004                                     struct net_device *netdev,
11005                                     const u8 *buf, size_t len,
11006                                     enum nl80211_commands cmd, gfp_t gfp,
11007                                     int uapsd_queues)
11008 {
11009         struct sk_buff *msg;
11010         void *hdr;
11011
11012         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11013         if (!msg)
11014                 return;
11015
11016         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11017         if (!hdr) {
11018                 nlmsg_free(msg);
11019                 return;
11020         }
11021
11022         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11023             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11024             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11025                 goto nla_put_failure;
11026
11027         if (uapsd_queues >= 0) {
11028                 struct nlattr *nla_wmm =
11029                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11030                 if (!nla_wmm)
11031                         goto nla_put_failure;
11032
11033                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11034                                uapsd_queues))
11035                         goto nla_put_failure;
11036
11037                 nla_nest_end(msg, nla_wmm);
11038         }
11039
11040         genlmsg_end(msg, hdr);
11041
11042         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11043                                 NL80211_MCGRP_MLME, gfp);
11044         return;
11045
11046  nla_put_failure:
11047         genlmsg_cancel(msg, hdr);
11048         nlmsg_free(msg);
11049 }
11050
11051 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11052                           struct net_device *netdev, const u8 *buf,
11053                           size_t len, gfp_t gfp)
11054 {
11055         nl80211_send_mlme_event(rdev, netdev, buf, len,
11056                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11057 }
11058
11059 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11060                            struct net_device *netdev, const u8 *buf,
11061                            size_t len, gfp_t gfp, int uapsd_queues)
11062 {
11063         nl80211_send_mlme_event(rdev, netdev, buf, len,
11064                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11065 }
11066
11067 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11068                          struct net_device *netdev, const u8 *buf,
11069                          size_t len, gfp_t gfp)
11070 {
11071         nl80211_send_mlme_event(rdev, netdev, buf, len,
11072                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11073 }
11074
11075 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11076                            struct net_device *netdev, const u8 *buf,
11077                            size_t len, gfp_t gfp)
11078 {
11079         nl80211_send_mlme_event(rdev, netdev, buf, len,
11080                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11081 }
11082
11083 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11084                                   size_t len)
11085 {
11086         struct wireless_dev *wdev = dev->ieee80211_ptr;
11087         struct wiphy *wiphy = wdev->wiphy;
11088         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11089         const struct ieee80211_mgmt *mgmt = (void *)buf;
11090         u32 cmd;
11091
11092         if (WARN_ON(len < 2))
11093                 return;
11094
11095         if (ieee80211_is_deauth(mgmt->frame_control))
11096                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11097         else
11098                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11099
11100         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11101         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11102 }
11103 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11104
11105 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11106                                       struct net_device *netdev, int cmd,
11107                                       const u8 *addr, gfp_t gfp)
11108 {
11109         struct sk_buff *msg;
11110         void *hdr;
11111
11112         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11113         if (!msg)
11114                 return;
11115
11116         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11117         if (!hdr) {
11118                 nlmsg_free(msg);
11119                 return;
11120         }
11121
11122         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11123             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11124             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11125             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11126                 goto nla_put_failure;
11127
11128         genlmsg_end(msg, hdr);
11129
11130         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11131                                 NL80211_MCGRP_MLME, gfp);
11132         return;
11133
11134  nla_put_failure:
11135         genlmsg_cancel(msg, hdr);
11136         nlmsg_free(msg);
11137 }
11138
11139 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11140                                struct net_device *netdev, const u8 *addr,
11141                                gfp_t gfp)
11142 {
11143         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11144                                   addr, gfp);
11145 }
11146
11147 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11148                                 struct net_device *netdev, const u8 *addr,
11149                                 gfp_t gfp)
11150 {
11151         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11152                                   addr, gfp);
11153 }
11154
11155 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11156                                  struct net_device *netdev, const u8 *bssid,
11157                                  const u8 *req_ie, size_t req_ie_len,
11158                                  const u8 *resp_ie, size_t resp_ie_len,
11159                                  u16 status, gfp_t gfp)
11160 {
11161         struct sk_buff *msg;
11162         void *hdr;
11163
11164         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11165         if (!msg)
11166                 return;
11167
11168         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11169         if (!hdr) {
11170                 nlmsg_free(msg);
11171                 return;
11172         }
11173
11174         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11175             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11176             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11177             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11178             (req_ie &&
11179              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11180             (resp_ie &&
11181              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11182                 goto nla_put_failure;
11183
11184         genlmsg_end(msg, hdr);
11185
11186         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11187                                 NL80211_MCGRP_MLME, gfp);
11188         return;
11189
11190  nla_put_failure:
11191         genlmsg_cancel(msg, hdr);
11192         nlmsg_free(msg);
11193
11194 }
11195
11196 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11197                          struct net_device *netdev, const u8 *bssid,
11198                          const u8 *req_ie, size_t req_ie_len,
11199                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11200 {
11201         struct sk_buff *msg;
11202         void *hdr;
11203
11204         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11205         if (!msg)
11206                 return;
11207
11208         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11209         if (!hdr) {
11210                 nlmsg_free(msg);
11211                 return;
11212         }
11213
11214         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11215             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11216             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11217             (req_ie &&
11218              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11219             (resp_ie &&
11220              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11221                 goto nla_put_failure;
11222
11223         genlmsg_end(msg, hdr);
11224
11225         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11226                                 NL80211_MCGRP_MLME, gfp);
11227         return;
11228
11229  nla_put_failure:
11230         genlmsg_cancel(msg, hdr);
11231         nlmsg_free(msg);
11232
11233 }
11234
11235 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11236                                struct net_device *netdev, u16 reason,
11237                                const u8 *ie, size_t ie_len, bool from_ap)
11238 {
11239         struct sk_buff *msg;
11240         void *hdr;
11241
11242         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11243         if (!msg)
11244                 return;
11245
11246         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11247         if (!hdr) {
11248                 nlmsg_free(msg);
11249                 return;
11250         }
11251
11252         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11253             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11254             (from_ap && reason &&
11255              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11256             (from_ap &&
11257              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11258             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11259                 goto nla_put_failure;
11260
11261         genlmsg_end(msg, hdr);
11262
11263         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11264                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11265         return;
11266
11267  nla_put_failure:
11268         genlmsg_cancel(msg, hdr);
11269         nlmsg_free(msg);
11270
11271 }
11272
11273 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11274                              struct net_device *netdev, const u8 *bssid,
11275                              gfp_t gfp)
11276 {
11277         struct sk_buff *msg;
11278         void *hdr;
11279
11280         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11281         if (!msg)
11282                 return;
11283
11284         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11285         if (!hdr) {
11286                 nlmsg_free(msg);
11287                 return;
11288         }
11289
11290         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11291             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11292             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11293                 goto nla_put_failure;
11294
11295         genlmsg_end(msg, hdr);
11296
11297         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11298                                 NL80211_MCGRP_MLME, gfp);
11299         return;
11300
11301  nla_put_failure:
11302         genlmsg_cancel(msg, hdr);
11303         nlmsg_free(msg);
11304 }
11305
11306 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11307                                         const u8* ie, u8 ie_len, gfp_t gfp)
11308 {
11309         struct wireless_dev *wdev = dev->ieee80211_ptr;
11310         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11311         struct sk_buff *msg;
11312         void *hdr;
11313
11314         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11315                 return;
11316
11317         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11318
11319         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11320         if (!msg)
11321                 return;
11322
11323         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11324         if (!hdr) {
11325                 nlmsg_free(msg);
11326                 return;
11327         }
11328
11329         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11330             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11331             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11332             (ie_len && ie &&
11333              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11334                 goto nla_put_failure;
11335
11336         genlmsg_end(msg, hdr);
11337
11338         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11339                                 NL80211_MCGRP_MLME, gfp);
11340         return;
11341
11342  nla_put_failure:
11343         genlmsg_cancel(msg, hdr);
11344         nlmsg_free(msg);
11345 }
11346 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11347
11348 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11349                                  struct net_device *netdev, const u8 *addr,
11350                                  enum nl80211_key_type key_type, int key_id,
11351                                  const u8 *tsc, gfp_t gfp)
11352 {
11353         struct sk_buff *msg;
11354         void *hdr;
11355
11356         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11357         if (!msg)
11358                 return;
11359
11360         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11361         if (!hdr) {
11362                 nlmsg_free(msg);
11363                 return;
11364         }
11365
11366         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11367             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11368             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11369             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11370             (key_id != -1 &&
11371              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11372             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11373                 goto nla_put_failure;
11374
11375         genlmsg_end(msg, hdr);
11376
11377         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11378                                 NL80211_MCGRP_MLME, gfp);
11379         return;
11380
11381  nla_put_failure:
11382         genlmsg_cancel(msg, hdr);
11383         nlmsg_free(msg);
11384 }
11385
11386 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11387                                     struct ieee80211_channel *channel_before,
11388                                     struct ieee80211_channel *channel_after)
11389 {
11390         struct sk_buff *msg;
11391         void *hdr;
11392         struct nlattr *nl_freq;
11393
11394         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11395         if (!msg)
11396                 return;
11397
11398         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11399         if (!hdr) {
11400                 nlmsg_free(msg);
11401                 return;
11402         }
11403
11404         /*
11405          * Since we are applying the beacon hint to a wiphy we know its
11406          * wiphy_idx is valid
11407          */
11408         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11409                 goto nla_put_failure;
11410
11411         /* Before */
11412         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11413         if (!nl_freq)
11414                 goto nla_put_failure;
11415         if (nl80211_msg_put_channel(msg, channel_before, false))
11416                 goto nla_put_failure;
11417         nla_nest_end(msg, nl_freq);
11418
11419         /* After */
11420         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11421         if (!nl_freq)
11422                 goto nla_put_failure;
11423         if (nl80211_msg_put_channel(msg, channel_after, false))
11424                 goto nla_put_failure;
11425         nla_nest_end(msg, nl_freq);
11426
11427         genlmsg_end(msg, hdr);
11428
11429         rcu_read_lock();
11430         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11431                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11432         rcu_read_unlock();
11433
11434         return;
11435
11436 nla_put_failure:
11437         genlmsg_cancel(msg, hdr);
11438         nlmsg_free(msg);
11439 }
11440
11441 static void nl80211_send_remain_on_chan_event(
11442         int cmd, struct cfg80211_registered_device *rdev,
11443         struct wireless_dev *wdev, u64 cookie,
11444         struct ieee80211_channel *chan,
11445         unsigned int duration, gfp_t gfp)
11446 {
11447         struct sk_buff *msg;
11448         void *hdr;
11449
11450         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11451         if (!msg)
11452                 return;
11453
11454         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11455         if (!hdr) {
11456                 nlmsg_free(msg);
11457                 return;
11458         }
11459
11460         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11461             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11462                                          wdev->netdev->ifindex)) ||
11463             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11464             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11465             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11466                         NL80211_CHAN_NO_HT) ||
11467             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11468                 goto nla_put_failure;
11469
11470         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11471             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11472                 goto nla_put_failure;
11473
11474         genlmsg_end(msg, hdr);
11475
11476         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11477                                 NL80211_MCGRP_MLME, gfp);
11478         return;
11479
11480  nla_put_failure:
11481         genlmsg_cancel(msg, hdr);
11482         nlmsg_free(msg);
11483 }
11484
11485 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11486                                struct ieee80211_channel *chan,
11487                                unsigned int duration, gfp_t gfp)
11488 {
11489         struct wiphy *wiphy = wdev->wiphy;
11490         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11491
11492         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11493         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11494                                           rdev, wdev, cookie, chan,
11495                                           duration, gfp);
11496 }
11497 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11498
11499 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11500                                         struct ieee80211_channel *chan,
11501                                         gfp_t gfp)
11502 {
11503         struct wiphy *wiphy = wdev->wiphy;
11504         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11505
11506         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11507         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11508                                           rdev, wdev, cookie, chan, 0, gfp);
11509 }
11510 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11511
11512 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11513                       struct station_info *sinfo, gfp_t gfp)
11514 {
11515         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11516         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11517         struct sk_buff *msg;
11518
11519         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11520
11521         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11522         if (!msg)
11523                 return;
11524
11525         if (nl80211_send_station(msg, 0, 0, 0,
11526                                  rdev, dev, mac_addr, sinfo) < 0) {
11527                 nlmsg_free(msg);
11528                 return;
11529         }
11530
11531         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11532                                 NL80211_MCGRP_MLME, gfp);
11533 }
11534 EXPORT_SYMBOL(cfg80211_new_sta);
11535
11536 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11537 {
11538         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11539         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11540         struct sk_buff *msg;
11541         void *hdr;
11542
11543         trace_cfg80211_del_sta(dev, mac_addr);
11544
11545         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11546         if (!msg)
11547                 return;
11548
11549         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11550         if (!hdr) {
11551                 nlmsg_free(msg);
11552                 return;
11553         }
11554
11555         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11556             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11557                 goto nla_put_failure;
11558
11559         genlmsg_end(msg, hdr);
11560
11561         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11562                                 NL80211_MCGRP_MLME, gfp);
11563         return;
11564
11565  nla_put_failure:
11566         genlmsg_cancel(msg, hdr);
11567         nlmsg_free(msg);
11568 }
11569 EXPORT_SYMBOL(cfg80211_del_sta);
11570
11571 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11572                           enum nl80211_connect_failed_reason reason,
11573                           gfp_t gfp)
11574 {
11575         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11576         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11577         struct sk_buff *msg;
11578         void *hdr;
11579
11580         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11581         if (!msg)
11582                 return;
11583
11584         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11585         if (!hdr) {
11586                 nlmsg_free(msg);
11587                 return;
11588         }
11589
11590         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11591             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11592             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11593                 goto nla_put_failure;
11594
11595         genlmsg_end(msg, hdr);
11596
11597         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11598                                 NL80211_MCGRP_MLME, gfp);
11599         return;
11600
11601  nla_put_failure:
11602         genlmsg_cancel(msg, hdr);
11603         nlmsg_free(msg);
11604 }
11605 EXPORT_SYMBOL(cfg80211_conn_failed);
11606
11607 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11608                                        const u8 *addr, gfp_t gfp)
11609 {
11610         struct wireless_dev *wdev = dev->ieee80211_ptr;
11611         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11612         struct sk_buff *msg;
11613         void *hdr;
11614         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11615
11616         if (!nlportid)
11617                 return false;
11618
11619         msg = nlmsg_new(100, gfp);
11620         if (!msg)
11621                 return true;
11622
11623         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11624         if (!hdr) {
11625                 nlmsg_free(msg);
11626                 return true;
11627         }
11628
11629         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11630             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11631             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11632                 goto nla_put_failure;
11633
11634         genlmsg_end(msg, hdr);
11635         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11636         return true;
11637
11638  nla_put_failure:
11639         genlmsg_cancel(msg, hdr);
11640         nlmsg_free(msg);
11641         return true;
11642 }
11643
11644 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11645                                 const u8 *addr, gfp_t gfp)
11646 {
11647         struct wireless_dev *wdev = dev->ieee80211_ptr;
11648         bool ret;
11649
11650         trace_cfg80211_rx_spurious_frame(dev, addr);
11651
11652         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11653                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11654                 trace_cfg80211_return_bool(false);
11655                 return false;
11656         }
11657         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11658                                          addr, gfp);
11659         trace_cfg80211_return_bool(ret);
11660         return ret;
11661 }
11662 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11663
11664 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11665                                         const u8 *addr, gfp_t gfp)
11666 {
11667         struct wireless_dev *wdev = dev->ieee80211_ptr;
11668         bool ret;
11669
11670         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11671
11672         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11673                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11674                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11675                 trace_cfg80211_return_bool(false);
11676                 return false;
11677         }
11678         ret = __nl80211_unexpected_frame(dev,
11679                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11680                                          addr, gfp);
11681         trace_cfg80211_return_bool(ret);
11682         return ret;
11683 }
11684 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11685
11686 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11687                       struct wireless_dev *wdev, u32 nlportid,
11688                       int freq, int sig_dbm,
11689                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11690 {
11691         struct net_device *netdev = wdev->netdev;
11692         struct sk_buff *msg;
11693         void *hdr;
11694
11695         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11696         if (!msg)
11697                 return -ENOMEM;
11698
11699         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11700         if (!hdr) {
11701                 nlmsg_free(msg);
11702                 return -ENOMEM;
11703         }
11704
11705         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11706             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11707                                         netdev->ifindex)) ||
11708             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11709             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11710             (sig_dbm &&
11711              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11712             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11713             (flags &&
11714              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11715                 goto nla_put_failure;
11716
11717         genlmsg_end(msg, hdr);
11718
11719         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11720
11721  nla_put_failure:
11722         genlmsg_cancel(msg, hdr);
11723         nlmsg_free(msg);
11724         return -ENOBUFS;
11725 }
11726
11727 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11728                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
11729 {
11730         struct wiphy *wiphy = wdev->wiphy;
11731         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11732         struct net_device *netdev = wdev->netdev;
11733         struct sk_buff *msg;
11734         void *hdr;
11735
11736         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11737
11738         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11739         if (!msg)
11740                 return;
11741
11742         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11743         if (!hdr) {
11744                 nlmsg_free(msg);
11745                 return;
11746         }
11747
11748         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11749             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11750                                    netdev->ifindex)) ||
11751             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11752             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11753             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11754             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11755                 goto nla_put_failure;
11756
11757         genlmsg_end(msg, hdr);
11758
11759         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11760                                 NL80211_MCGRP_MLME, gfp);
11761         return;
11762
11763  nla_put_failure:
11764         genlmsg_cancel(msg, hdr);
11765         nlmsg_free(msg);
11766 }
11767 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11768
11769 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11770                                             const char *mac, gfp_t gfp)
11771 {
11772         struct wireless_dev *wdev = dev->ieee80211_ptr;
11773         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11774         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11775         void **cb;
11776
11777         if (!msg)
11778                 return NULL;
11779
11780         cb = (void **)msg->cb;
11781
11782         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11783         if (!cb[0]) {
11784                 nlmsg_free(msg);
11785                 return NULL;
11786         }
11787
11788         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11789             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11790                 goto nla_put_failure;
11791
11792         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
11793                 goto nla_put_failure;
11794
11795         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
11796         if (!cb[1])
11797                 goto nla_put_failure;
11798
11799         cb[2] = rdev;
11800
11801         return msg;
11802  nla_put_failure:
11803         nlmsg_free(msg);
11804         return NULL;
11805 }
11806
11807 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
11808 {
11809         void **cb = (void **)msg->cb;
11810         struct cfg80211_registered_device *rdev = cb[2];
11811
11812         nla_nest_end(msg, cb[1]);
11813         genlmsg_end(msg, cb[0]);
11814
11815         memset(msg->cb, 0, sizeof(msg->cb));
11816
11817         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11818                                 NL80211_MCGRP_MLME, gfp);
11819 }
11820
11821 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11822                               enum nl80211_cqm_rssi_threshold_event rssi_event,
11823                               gfp_t gfp)
11824 {
11825         struct sk_buff *msg;
11826
11827         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11828
11829         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
11830                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
11831                 return;
11832
11833         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11834         if (!msg)
11835                 return;
11836
11837         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11838                         rssi_event))
11839                 goto nla_put_failure;
11840
11841         cfg80211_send_cqm(msg, gfp);
11842
11843         return;
11844
11845  nla_put_failure:
11846         nlmsg_free(msg);
11847 }
11848 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11849
11850 void cfg80211_cqm_txe_notify(struct net_device *dev,
11851                              const u8 *peer, u32 num_packets,
11852                              u32 rate, u32 intvl, gfp_t gfp)
11853 {
11854         struct sk_buff *msg;
11855
11856         msg = cfg80211_prepare_cqm(dev, peer, gfp);
11857         if (!msg)
11858                 return;
11859
11860         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11861                 goto nla_put_failure;
11862
11863         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11864                 goto nla_put_failure;
11865
11866         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11867                 goto nla_put_failure;
11868
11869         cfg80211_send_cqm(msg, gfp);
11870         return;
11871
11872  nla_put_failure:
11873         nlmsg_free(msg);
11874 }
11875 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11876
11877 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11878                                  const u8 *peer, u32 num_packets, gfp_t gfp)
11879 {
11880         struct sk_buff *msg;
11881
11882         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11883
11884         msg = cfg80211_prepare_cqm(dev, peer, gfp);
11885         if (!msg)
11886                 return;
11887
11888         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11889                 goto nla_put_failure;
11890
11891         cfg80211_send_cqm(msg, gfp);
11892         return;
11893
11894  nla_put_failure:
11895         nlmsg_free(msg);
11896 }
11897 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11898
11899 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
11900 {
11901         struct sk_buff *msg;
11902
11903         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11904         if (!msg)
11905                 return;
11906
11907         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
11908                 goto nla_put_failure;
11909
11910         cfg80211_send_cqm(msg, gfp);
11911         return;
11912
11913  nla_put_failure:
11914         nlmsg_free(msg);
11915 }
11916 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
11917
11918 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11919                                      struct net_device *netdev, const u8 *bssid,
11920                                      const u8 *replay_ctr, gfp_t gfp)
11921 {
11922         struct sk_buff *msg;
11923         struct nlattr *rekey_attr;
11924         void *hdr;
11925
11926         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11927         if (!msg)
11928                 return;
11929
11930         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11931         if (!hdr) {
11932                 nlmsg_free(msg);
11933                 return;
11934         }
11935
11936         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11937             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11938             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11939                 goto nla_put_failure;
11940
11941         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11942         if (!rekey_attr)
11943                 goto nla_put_failure;
11944
11945         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11946                     NL80211_REPLAY_CTR_LEN, replay_ctr))
11947                 goto nla_put_failure;
11948
11949         nla_nest_end(msg, rekey_attr);
11950
11951         genlmsg_end(msg, hdr);
11952
11953         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11954                                 NL80211_MCGRP_MLME, gfp);
11955         return;
11956
11957  nla_put_failure:
11958         genlmsg_cancel(msg, hdr);
11959         nlmsg_free(msg);
11960 }
11961
11962 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11963                                const u8 *replay_ctr, gfp_t gfp)
11964 {
11965         struct wireless_dev *wdev = dev->ieee80211_ptr;
11966         struct wiphy *wiphy = wdev->wiphy;
11967         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11968
11969         trace_cfg80211_gtk_rekey_notify(dev, bssid);
11970         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11971 }
11972 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11973
11974 static void
11975 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11976                                struct net_device *netdev, int index,
11977                                const u8 *bssid, bool preauth, gfp_t gfp)
11978 {
11979         struct sk_buff *msg;
11980         struct nlattr *attr;
11981         void *hdr;
11982
11983         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11984         if (!msg)
11985                 return;
11986
11987         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11988         if (!hdr) {
11989                 nlmsg_free(msg);
11990                 return;
11991         }
11992
11993         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11994             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11995                 goto nla_put_failure;
11996
11997         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11998         if (!attr)
11999                 goto nla_put_failure;
12000
12001         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12002             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12003             (preauth &&
12004              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12005                 goto nla_put_failure;
12006
12007         nla_nest_end(msg, attr);
12008
12009         genlmsg_end(msg, hdr);
12010
12011         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12012                                 NL80211_MCGRP_MLME, gfp);
12013         return;
12014
12015  nla_put_failure:
12016         genlmsg_cancel(msg, hdr);
12017         nlmsg_free(msg);
12018 }
12019
12020 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12021                                      const u8 *bssid, bool preauth, gfp_t gfp)
12022 {
12023         struct wireless_dev *wdev = dev->ieee80211_ptr;
12024         struct wiphy *wiphy = wdev->wiphy;
12025         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12026
12027         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12028         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12029 }
12030 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12031
12032 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12033                                      struct net_device *netdev,
12034                                      struct cfg80211_chan_def *chandef,
12035                                      gfp_t gfp,
12036                                      enum nl80211_commands notif,
12037                                      u8 count)
12038 {
12039         struct sk_buff *msg;
12040         void *hdr;
12041
12042         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12043         if (!msg)
12044                 return;
12045
12046         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12047         if (!hdr) {
12048                 nlmsg_free(msg);
12049                 return;
12050         }
12051
12052         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12053                 goto nla_put_failure;
12054
12055         if (nl80211_send_chandef(msg, chandef))
12056                 goto nla_put_failure;
12057
12058         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12059             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12060                         goto nla_put_failure;
12061
12062         genlmsg_end(msg, hdr);
12063
12064         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12065                                 NL80211_MCGRP_MLME, gfp);
12066         return;
12067
12068  nla_put_failure:
12069         genlmsg_cancel(msg, hdr);
12070         nlmsg_free(msg);
12071 }
12072
12073 void cfg80211_ch_switch_notify(struct net_device *dev,
12074                                struct cfg80211_chan_def *chandef)
12075 {
12076         struct wireless_dev *wdev = dev->ieee80211_ptr;
12077         struct wiphy *wiphy = wdev->wiphy;
12078         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12079
12080         ASSERT_WDEV_LOCK(wdev);
12081
12082         trace_cfg80211_ch_switch_notify(dev, chandef);
12083
12084         wdev->chandef = *chandef;
12085         wdev->preset_chandef = *chandef;
12086         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12087                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12088 }
12089 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12090
12091 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12092                                        struct cfg80211_chan_def *chandef,
12093                                        u8 count)
12094 {
12095         struct wireless_dev *wdev = dev->ieee80211_ptr;
12096         struct wiphy *wiphy = wdev->wiphy;
12097         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12098
12099         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12100
12101         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12102                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12103 }
12104 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12105
12106 void
12107 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12108                      const struct cfg80211_chan_def *chandef,
12109                      enum nl80211_radar_event event,
12110                      struct net_device *netdev, gfp_t gfp)
12111 {
12112         struct sk_buff *msg;
12113         void *hdr;
12114
12115         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12116         if (!msg)
12117                 return;
12118
12119         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12120         if (!hdr) {
12121                 nlmsg_free(msg);
12122                 return;
12123         }
12124
12125         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12126                 goto nla_put_failure;
12127
12128         /* NOP and radar events don't need a netdev parameter */
12129         if (netdev) {
12130                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12131
12132                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12133                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12134                         goto nla_put_failure;
12135         }
12136
12137         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12138                 goto nla_put_failure;
12139
12140         if (nl80211_send_chandef(msg, chandef))
12141                 goto nla_put_failure;
12142
12143         genlmsg_end(msg, hdr);
12144
12145         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12146                                 NL80211_MCGRP_MLME, gfp);
12147         return;
12148
12149  nla_put_failure:
12150         genlmsg_cancel(msg, hdr);
12151         nlmsg_free(msg);
12152 }
12153
12154 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12155                            u64 cookie, bool acked, gfp_t gfp)
12156 {
12157         struct wireless_dev *wdev = dev->ieee80211_ptr;
12158         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12159         struct sk_buff *msg;
12160         void *hdr;
12161
12162         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12163
12164         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12165
12166         if (!msg)
12167                 return;
12168
12169         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12170         if (!hdr) {
12171                 nlmsg_free(msg);
12172                 return;
12173         }
12174
12175         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12176             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12177             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12178             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12179             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12180                 goto nla_put_failure;
12181
12182         genlmsg_end(msg, hdr);
12183
12184         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12185                                 NL80211_MCGRP_MLME, gfp);
12186         return;
12187
12188  nla_put_failure:
12189         genlmsg_cancel(msg, hdr);
12190         nlmsg_free(msg);
12191 }
12192 EXPORT_SYMBOL(cfg80211_probe_status);
12193
12194 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12195                                  const u8 *frame, size_t len,
12196                                  int freq, int sig_dbm)
12197 {
12198         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12199         struct sk_buff *msg;
12200         void *hdr;
12201         struct cfg80211_beacon_registration *reg;
12202
12203         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12204
12205         spin_lock_bh(&rdev->beacon_registrations_lock);
12206         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12207                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12208                 if (!msg) {
12209                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12210                         return;
12211                 }
12212
12213                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12214                 if (!hdr)
12215                         goto nla_put_failure;
12216
12217                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12218                     (freq &&
12219                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12220                     (sig_dbm &&
12221                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12222                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12223                         goto nla_put_failure;
12224
12225                 genlmsg_end(msg, hdr);
12226
12227                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12228         }
12229         spin_unlock_bh(&rdev->beacon_registrations_lock);
12230         return;
12231
12232  nla_put_failure:
12233         spin_unlock_bh(&rdev->beacon_registrations_lock);
12234         if (hdr)
12235                 genlmsg_cancel(msg, hdr);
12236         nlmsg_free(msg);
12237 }
12238 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12239
12240 #ifdef CONFIG_PM
12241 static int cfg80211_net_detect_results(struct sk_buff *msg,
12242                                        struct cfg80211_wowlan_wakeup *wakeup)
12243 {
12244         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12245         struct nlattr *nl_results, *nl_match, *nl_freqs;
12246         int i, j;
12247
12248         nl_results = nla_nest_start(
12249                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12250         if (!nl_results)
12251                 return -EMSGSIZE;
12252
12253         for (i = 0; i < nd->n_matches; i++) {
12254                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12255
12256                 nl_match = nla_nest_start(msg, i);
12257                 if (!nl_match)
12258                         break;
12259
12260                 /* The SSID attribute is optional in nl80211, but for
12261                  * simplicity reasons it's always present in the
12262                  * cfg80211 structure.  If a driver can't pass the
12263                  * SSID, that needs to be changed.  A zero length SSID
12264                  * is still a valid SSID (wildcard), so it cannot be
12265                  * used for this purpose.
12266                  */
12267                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12268                             match->ssid.ssid)) {
12269                         nla_nest_cancel(msg, nl_match);
12270                         goto out;
12271                 }
12272
12273                 if (match->n_channels) {
12274                         nl_freqs = nla_nest_start(
12275                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12276                         if (!nl_freqs) {
12277                                 nla_nest_cancel(msg, nl_match);
12278                                 goto out;
12279                         }
12280
12281                         for (j = 0; j < match->n_channels; j++) {
12282                                 if (nla_put_u32(msg,
12283                                                 NL80211_ATTR_WIPHY_FREQ,
12284                                                 match->channels[j])) {
12285                                         nla_nest_cancel(msg, nl_freqs);
12286                                         nla_nest_cancel(msg, nl_match);
12287                                         goto out;
12288                                 }
12289                         }
12290
12291                         nla_nest_end(msg, nl_freqs);
12292                 }
12293
12294                 nla_nest_end(msg, nl_match);
12295         }
12296
12297 out:
12298         nla_nest_end(msg, nl_results);
12299         return 0;
12300 }
12301
12302 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12303                                    struct cfg80211_wowlan_wakeup *wakeup,
12304                                    gfp_t gfp)
12305 {
12306         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12307         struct sk_buff *msg;
12308         void *hdr;
12309         int size = 200;
12310
12311         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12312
12313         if (wakeup)
12314                 size += wakeup->packet_present_len;
12315
12316         msg = nlmsg_new(size, gfp);
12317         if (!msg)
12318                 return;
12319
12320         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12321         if (!hdr)
12322                 goto free_msg;
12323
12324         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12325             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12326                 goto free_msg;
12327
12328         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12329                                         wdev->netdev->ifindex))
12330                 goto free_msg;
12331
12332         if (wakeup) {
12333                 struct nlattr *reasons;
12334
12335                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12336                 if (!reasons)
12337                         goto free_msg;
12338
12339                 if (wakeup->disconnect &&
12340                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12341                         goto free_msg;
12342                 if (wakeup->magic_pkt &&
12343                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12344                         goto free_msg;
12345                 if (wakeup->gtk_rekey_failure &&
12346                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12347                         goto free_msg;
12348                 if (wakeup->eap_identity_req &&
12349                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12350                         goto free_msg;
12351                 if (wakeup->four_way_handshake &&
12352                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12353                         goto free_msg;
12354                 if (wakeup->rfkill_release &&
12355                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12356                         goto free_msg;
12357
12358                 if (wakeup->pattern_idx >= 0 &&
12359                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12360                                 wakeup->pattern_idx))
12361                         goto free_msg;
12362
12363                 if (wakeup->tcp_match &&
12364                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12365                         goto free_msg;
12366
12367                 if (wakeup->tcp_connlost &&
12368                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12369                         goto free_msg;
12370
12371                 if (wakeup->tcp_nomoretokens &&
12372                     nla_put_flag(msg,
12373                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12374                         goto free_msg;
12375
12376                 if (wakeup->packet) {
12377                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12378                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12379
12380                         if (!wakeup->packet_80211) {
12381                                 pkt_attr =
12382                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12383                                 len_attr =
12384                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12385                         }
12386
12387                         if (wakeup->packet_len &&
12388                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12389                                 goto free_msg;
12390
12391                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12392                                     wakeup->packet))
12393                                 goto free_msg;
12394                 }
12395
12396                 if (wakeup->net_detect &&
12397                     cfg80211_net_detect_results(msg, wakeup))
12398                                 goto free_msg;
12399
12400                 nla_nest_end(msg, reasons);
12401         }
12402
12403         genlmsg_end(msg, hdr);
12404
12405         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12406                                 NL80211_MCGRP_MLME, gfp);
12407         return;
12408
12409  free_msg:
12410         nlmsg_free(msg);
12411 }
12412 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12413 #endif
12414
12415 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12416                                 enum nl80211_tdls_operation oper,
12417                                 u16 reason_code, gfp_t gfp)
12418 {
12419         struct wireless_dev *wdev = dev->ieee80211_ptr;
12420         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12421         struct sk_buff *msg;
12422         void *hdr;
12423
12424         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12425                                          reason_code);
12426
12427         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12428         if (!msg)
12429                 return;
12430
12431         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12432         if (!hdr) {
12433                 nlmsg_free(msg);
12434                 return;
12435         }
12436
12437         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12438             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12439             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12440             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12441             (reason_code > 0 &&
12442              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12443                 goto nla_put_failure;
12444
12445         genlmsg_end(msg, hdr);
12446
12447         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12448                                 NL80211_MCGRP_MLME, gfp);
12449         return;
12450
12451  nla_put_failure:
12452         genlmsg_cancel(msg, hdr);
12453         nlmsg_free(msg);
12454 }
12455 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12456
12457 static int nl80211_netlink_notify(struct notifier_block * nb,
12458                                   unsigned long state,
12459                                   void *_notify)
12460 {
12461         struct netlink_notify *notify = _notify;
12462         struct cfg80211_registered_device *rdev;
12463         struct wireless_dev *wdev;
12464         struct cfg80211_beacon_registration *reg, *tmp;
12465
12466         if (state != NETLINK_URELEASE)
12467                 return NOTIFY_DONE;
12468
12469         rcu_read_lock();
12470
12471         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12472                 bool schedule_destroy_work = false;
12473
12474                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12475                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12476
12477                         if (wdev->owner_nlportid == notify->portid)
12478                                 schedule_destroy_work = true;
12479                 }
12480
12481                 spin_lock_bh(&rdev->beacon_registrations_lock);
12482                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12483                                          list) {
12484                         if (reg->nlportid == notify->portid) {
12485                                 list_del(&reg->list);
12486                                 kfree(reg);
12487                                 break;
12488                         }
12489                 }
12490                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12491
12492                 if (schedule_destroy_work) {
12493                         struct cfg80211_iface_destroy *destroy;
12494
12495                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12496                         if (destroy) {
12497                                 destroy->nlportid = notify->portid;
12498                                 spin_lock(&rdev->destroy_list_lock);
12499                                 list_add(&destroy->list, &rdev->destroy_list);
12500                                 spin_unlock(&rdev->destroy_list_lock);
12501                                 schedule_work(&rdev->destroy_work);
12502                         }
12503                 }
12504         }
12505
12506         rcu_read_unlock();
12507
12508         return NOTIFY_OK;
12509 }
12510
12511 static struct notifier_block nl80211_netlink_notifier = {
12512         .notifier_call = nl80211_netlink_notify,
12513 };
12514
12515 void cfg80211_ft_event(struct net_device *netdev,
12516                        struct cfg80211_ft_event_params *ft_event)
12517 {
12518         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12519         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12520         struct sk_buff *msg;
12521         void *hdr;
12522
12523         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12524
12525         if (!ft_event->target_ap)
12526                 return;
12527
12528         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12529         if (!msg)
12530                 return;
12531
12532         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12533         if (!hdr)
12534                 goto out;
12535
12536         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12537             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12538             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12539                 goto out;
12540
12541         if (ft_event->ies &&
12542             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12543                 goto out;
12544         if (ft_event->ric_ies &&
12545             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12546                     ft_event->ric_ies))
12547                 goto out;
12548
12549         genlmsg_end(msg, hdr);
12550
12551         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12552                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12553         return;
12554  out:
12555         nlmsg_free(msg);
12556 }
12557 EXPORT_SYMBOL(cfg80211_ft_event);
12558
12559 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12560 {
12561         struct cfg80211_registered_device *rdev;
12562         struct sk_buff *msg;
12563         void *hdr;
12564         u32 nlportid;
12565
12566         rdev = wiphy_to_rdev(wdev->wiphy);
12567         if (!rdev->crit_proto_nlportid)
12568                 return;
12569
12570         nlportid = rdev->crit_proto_nlportid;
12571         rdev->crit_proto_nlportid = 0;
12572
12573         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12574         if (!msg)
12575                 return;
12576
12577         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12578         if (!hdr)
12579                 goto nla_put_failure;
12580
12581         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12582             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12583                 goto nla_put_failure;
12584
12585         genlmsg_end(msg, hdr);
12586
12587         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12588         return;
12589
12590  nla_put_failure:
12591         if (hdr)
12592                 genlmsg_cancel(msg, hdr);
12593         nlmsg_free(msg);
12594
12595 }
12596 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12597
12598 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12599 {
12600         struct wiphy *wiphy = wdev->wiphy;
12601         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12602         struct sk_buff *msg;
12603         void *hdr;
12604
12605         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12606         if (!msg)
12607                 return;
12608
12609         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12610         if (!hdr)
12611                 goto out;
12612
12613         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12614             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12615             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12616                 goto out;
12617
12618         genlmsg_end(msg, hdr);
12619
12620         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12621                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12622         return;
12623  out:
12624         nlmsg_free(msg);
12625 }
12626
12627 /* initialisation/exit functions */
12628
12629 int nl80211_init(void)
12630 {
12631         int err;
12632
12633         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12634                                                    nl80211_mcgrps);
12635         if (err)
12636                 return err;
12637
12638         err = netlink_register_notifier(&nl80211_netlink_notifier);
12639         if (err)
12640                 goto err_out;
12641
12642         return 0;
12643  err_out:
12644         genl_unregister_family(&nl80211_fam);
12645         return err;
12646 }
12647
12648 void nl80211_exit(void)
12649 {
12650         netlink_unregister_notifier(&nl80211_netlink_notifier);
12651         genl_unregister_family(&nl80211_fam);
12652 }