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  */
   6
   7 #include <linux/if.h>
   8 #include <linux/module.h>
   9 #include <linux/err.h>
  10 #include <linux/slab.h>
  11 #include <linux/list.h>
  12 #include <linux/if_ether.h>
  13 #include <linux/ieee80211.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/rtnetlink.h>
  16 #include <linux/netlink.h>
  17 #include <linux/etherdevice.h>
  18 #include <net/net_namespace.h>
  19 #include <net/genetlink.h>
  20 #include <net/cfg80211.h>
  21 #include <net/sock.h>
  22 #include "core.h"
  23 #include "nl80211.h"
  24 #include "reg.h"
  25
  26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
  27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  28                                    struct genl_info *info,
  29                                    struct cfg80211_crypto_settings *settings,
  30                                    int cipher_limit);
  31
  32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
  33                             struct genl_info *info);
  34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
  35                               struct genl_info *info);
  36
  37 /* the netlink family */
  38 static struct genl_family nl80211_fam = {
  39         .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
  40         .name = "nl80211",      /* have users key off the name instead */
  41         .hdrsize = 0,           /* no private header */
  42         .version = 1,           /* no particular meaning now */
  43         .maxattr = NL80211_ATTR_MAX,
  44         .netnsok = true,
  45         .pre_doit = nl80211_pre_doit,
  46         .post_doit = nl80211_post_doit,
  47 };
  48
  49 /* internal helper: get rdev and dev */
  50 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
  51                                        struct cfg80211_registered_device **rdev,
  52                                        struct net_device **dev)
  53 {
  54         struct nlattr **attrs = info->attrs;
  55         int ifindex;
  56
  57         if (!attrs[NL80211_ATTR_IFINDEX])
  58                 return -EINVAL;
  59
  60         ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  61         *dev = dev_get_by_index(genl_info_net(info), ifindex);
  62         if (!*dev)
  63                 return -ENODEV;
  64
  65         *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
  66         if (IS_ERR(*rdev)) {
  67                 dev_put(*dev);
  68                 return PTR_ERR(*rdev);
  69         }
  70
  71         return 0;
  72 }
  73
  74 /* policy for the attributes */
  75 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
  76         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
  77         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
  78                                       .len = 20-1 },
  79         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
  80         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
  81         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
  82         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
  83         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
  84         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
  85         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
  86         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
  87
  88         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
  89         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
  90         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
  91
  92         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
  93         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
  94
  95         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
  96         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
  97                                     .len = WLAN_MAX_KEY_LEN },
  98         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
  99         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 100         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 101         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
 102         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 103
 104         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 105         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 106         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 107                                        .len = IEEE80211_MAX_DATA_LEN },
 108         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 109                                        .len = IEEE80211_MAX_DATA_LEN },
 110         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 111         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 112         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 113         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 114                                                .len = NL80211_MAX_SUPP_RATES },
 115         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 116         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 117         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 118         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 119                                 .len = IEEE80211_MAX_MESH_ID_LEN },
 120         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 121
 122         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 123         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 124
 125         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 126         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 127         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 128         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 129                                            .len = NL80211_MAX_SUPP_RATES },
 130         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 131
 132         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 133         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 134
 135         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 136
 137         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 138         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 139                               .len = IEEE80211_MAX_DATA_LEN },
 140         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 141         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 142
 143         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 144                                 .len = IEEE80211_MAX_SSID_LEN },
 145         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 146         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 147         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 148         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 149         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 150         [NL80211_ATTR_STA_FLAGS2] = {
 151                 .len = sizeof(struct nl80211_sta_flag_update),
 152         },
 153         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 154         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 155         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 156         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 157         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 158         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 159         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 160         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 161         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 162                                  .len = WLAN_PMKID_LEN },
 163         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 164         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 165         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 166         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 167                                  .len = IEEE80211_MAX_DATA_LEN },
 168         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 169         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 170         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 171         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 172         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 173         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 174         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 175         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 176         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 177         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 178         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 179         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 180         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 181         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 182         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 183         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 184         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 185         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 186         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 187         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 188                                          .len = IEEE80211_MAX_DATA_LEN },
 189         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 190                                          .len = IEEE80211_MAX_DATA_LEN },
 191         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 192         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 193         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 194         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 195         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 196         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 197         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 198         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 199 };
 200
 201 /* policy for the key attributes */
 202 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 203         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 204         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 205         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 206         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
 207         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 208         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 209         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 210         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 211 };
 212
 213 /* policy for the key default flags */
 214 static const struct nla_policy
 215 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 216         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 217         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 218 };
 219
 220 /* policy for WoWLAN attributes */
 221 static const struct nla_policy
 222 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 223         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 224         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 225         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 226         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 227         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 228         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 229         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 230         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 231 };
 232
 233 /* policy for GTK rekey offload attributes */
 234 static const struct nla_policy
 235 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 236         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 237         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 238         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 239 };
 240
 241 static const struct nla_policy
 242 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 243         [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
 244                                                  .len = IEEE80211_MAX_SSID_LEN },
 245 };
 246
 247 /* ifidx get helper */
 248 static int nl80211_get_ifidx(struct netlink_callback *cb)
 249 {
 250         int res;
 251
 252         res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 253                           nl80211_fam.attrbuf, nl80211_fam.maxattr,
 254                           nl80211_policy);
 255         if (res)
 256                 return res;
 257
 258         if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
 259                 return -EINVAL;
 260
 261         res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
 262         if (!res)
 263                 return -EINVAL;
 264         return res;
 265 }
 266
 267 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
 268                                        struct netlink_callback *cb,
 269                                        struct cfg80211_registered_device **rdev,
 270                                        struct net_device **dev)
 271 {
 272         int ifidx = cb->args[0];
 273         int err;
 274
 275         if (!ifidx)
 276                 ifidx = nl80211_get_ifidx(cb);
 277         if (ifidx < 0)
 278                 return ifidx;
 279
 280         cb->args[0] = ifidx;
 281
 282         rtnl_lock();
 283
 284         *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
 285         if (!*dev) {
 286                 err = -ENODEV;
 287                 goto out_rtnl;
 288         }
 289
 290         *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
 291         if (IS_ERR(*rdev)) {
 292                 err = PTR_ERR(*rdev);
 293                 goto out_rtnl;
 294         }
 295
 296         return 0;
 297  out_rtnl:
 298         rtnl_unlock();
 299         return err;
 300 }
 301
 302 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
 303 {
 304         cfg80211_unlock_rdev(rdev);
 305         rtnl_unlock();
 306 }
 307
 308 /* IE validation */
 309 static bool is_valid_ie_attr(const struct nlattr *attr)
 310 {
 311         const u8 *pos;
 312         int len;
 313
 314         if (!attr)
 315                 return true;
 316
 317         pos = nla_data(attr);
 318         len = nla_len(attr);
 319
 320         while (len) {
 321                 u8 elemlen;
 322
 323                 if (len < 2)
 324                         return false;
 325                 len -= 2;
 326
 327                 elemlen = pos[1];
 328                 if (elemlen > len)
 329                         return false;
 330
 331                 len -= elemlen;
 332                 pos += 2 + elemlen;
 333         }
 334
 335         return true;
 336 }
 337
 338 /* message building helper */
 339 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
 340                                    int flags, u8 cmd)
 341 {
 342         /* since there is no private header just add the generic one */
 343         return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
 344 }
 345
 346 static int nl80211_msg_put_channel(struct sk_buff *msg,
 347                                    struct ieee80211_channel *chan)
 348 {
 349         NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 350                     chan->center_freq);
 351
 352         if (chan->flags & IEEE80211_CHAN_DISABLED)
 353                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
 354         if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
 355                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
 356         if (chan->flags & IEEE80211_CHAN_NO_IBSS)
 357                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
 358         if (chan->flags & IEEE80211_CHAN_RADAR)
 359                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
 360
 361         NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 362                     DBM_TO_MBM(chan->max_power));
 363
 364         return 0;
 365
 366  nla_put_failure:
 367         return -ENOBUFS;
 368 }
 369
 370 /* netlink command implementations */
 371
 372 struct key_parse {
 373         struct key_params p;
 374         int idx;
 375         int type;
 376         bool def, defmgmt;
 377         bool def_uni, def_multi;
 378 };
 379
 380 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 381 {
 382         struct nlattr *tb[NL80211_KEY_MAX + 1];
 383         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 384                                    nl80211_key_policy);
 385         if (err)
 386                 return err;
 387
 388         k->def = !!tb[NL80211_KEY_DEFAULT];
 389         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 390
 391         if (k->def) {
 392                 k->def_uni = true;
 393                 k->def_multi = true;
 394         }
 395         if (k->defmgmt)
 396                 k->def_multi = true;
 397
 398         if (tb[NL80211_KEY_IDX])
 399                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 400
 401         if (tb[NL80211_KEY_DATA]) {
 402                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 403                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 404         }
 405
 406         if (tb[NL80211_KEY_SEQ]) {
 407                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 408                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 409         }
 410
 411         if (tb[NL80211_KEY_CIPHER])
 412                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 413
 414         if (tb[NL80211_KEY_TYPE]) {
 415                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 416                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 417                         return -EINVAL;
 418         }
 419
 420         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 421                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 422                 int err = nla_parse_nested(kdt,
 423                                            NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 424                                            tb[NL80211_KEY_DEFAULT_TYPES],
 425                                            nl80211_key_default_policy);
 426                 if (err)
 427                         return err;
 428
 429                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 430                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 431         }
 432
 433         return 0;
 434 }
 435
 436 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 437 {
 438         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 439                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 440                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 441         }
 442
 443         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 444                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 445                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 446         }
 447
 448         if (info->attrs[NL80211_ATTR_KEY_IDX])
 449                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 450
 451         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 452                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 453
 454         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 455         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 456
 457         if (k->def) {
 458                 k->def_uni = true;
 459                 k->def_multi = true;
 460         }
 461         if (k->defmgmt)
 462                 k->def_multi = true;
 463
 464         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 465                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 466                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 467                         return -EINVAL;
 468         }
 469
 470         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 471                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 472                 int err = nla_parse_nested(
 473                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 474                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 475                                 nl80211_key_default_policy);
 476                 if (err)
 477                         return err;
 478
 479                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 480                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 481         }
 482
 483         return 0;
 484 }
 485
 486 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 487 {
 488         int err;
 489
 490         memset(k, 0, sizeof(*k));
 491         k->idx = -1;
 492         k->type = -1;
 493
 494         if (info->attrs[NL80211_ATTR_KEY])
 495                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 496         else
 497                 err = nl80211_parse_key_old(info, k);
 498
 499         if (err)
 500                 return err;
 501
 502         if (k->def && k->defmgmt)
 503                 return -EINVAL;
 504
 505         if (k->defmgmt) {
 506                 if (k->def_uni || !k->def_multi)
 507                         return -EINVAL;
 508         }
 509
 510         if (k->idx != -1) {
 511                 if (k->defmgmt) {
 512                         if (k->idx < 4 || k->idx > 5)
 513                                 return -EINVAL;
 514                 } else if (k->def) {
 515                         if (k->idx < 0 || k->idx > 3)
 516                                 return -EINVAL;
 517                 } else {
 518                         if (k->idx < 0 || k->idx > 5)
 519                                 return -EINVAL;
 520                 }
 521         }
 522
 523         return 0;
 524 }
 525
 526 static struct cfg80211_cached_keys *
 527 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 528                        struct nlattr *keys)
 529 {
 530         struct key_parse parse;
 531         struct nlattr *key;
 532         struct cfg80211_cached_keys *result;
 533         int rem, err, def = 0;
 534
 535         result = kzalloc(sizeof(*result), GFP_KERNEL);
 536         if (!result)
 537                 return ERR_PTR(-ENOMEM);
 538
 539         result->def = -1;
 540         result->defmgmt = -1;
 541
 542         nla_for_each_nested(key, keys, rem) {
 543                 memset(&parse, 0, sizeof(parse));
 544                 parse.idx = -1;
 545
 546                 err = nl80211_parse_key_new(key, &parse);
 547                 if (err)
 548                         goto error;
 549                 err = -EINVAL;
 550                 if (!parse.p.key)
 551                         goto error;
 552                 if (parse.idx < 0 || parse.idx > 4)
 553                         goto error;
 554                 if (parse.def) {
 555                         if (def)
 556                                 goto error;
 557                         def = 1;
 558                         result->def = parse.idx;
 559                         if (!parse.def_uni || !parse.def_multi)
 560                                 goto error;
 561                 } else if (parse.defmgmt)
 562                         goto error;
 563                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 564                                                      parse.idx, false, NULL);
 565                 if (err)
 566                         goto error;
 567                 result->params[parse.idx].cipher = parse.p.cipher;
 568                 result->params[parse.idx].key_len = parse.p.key_len;
 569                 result->params[parse.idx].key = result->data[parse.idx];
 570                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 571         }
 572
 573         return result;
 574  error:
 575         kfree(result);
 576         return ERR_PTR(err);
 577 }
 578
 579 static int nl80211_key_allowed(struct wireless_dev *wdev)
 580 {
 581         ASSERT_WDEV_LOCK(wdev);
 582
 583         switch (wdev->iftype) {
 584         case NL80211_IFTYPE_AP:
 585         case NL80211_IFTYPE_AP_VLAN:
 586         case NL80211_IFTYPE_P2P_GO:
 587         case NL80211_IFTYPE_MESH_POINT:
 588                 break;
 589         case NL80211_IFTYPE_ADHOC:
 590                 if (!wdev->current_bss)
 591                         return -ENOLINK;
 592                 break;
 593         case NL80211_IFTYPE_STATION:
 594         case NL80211_IFTYPE_P2P_CLIENT:
 595                 if (wdev->sme_state != CFG80211_SME_CONNECTED)
 596                         return -ENOLINK;
 597                 break;
 598         default:
 599                 return -EINVAL;
 600         }
 601
 602         return 0;
 603 }
 604
 605 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 606 {
 607         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 608         int i;
 609
 610         if (!nl_modes)
 611                 goto nla_put_failure;
 612
 613         i = 0;
 614         while (ifmodes) {
 615                 if (ifmodes & 1)
 616                         NLA_PUT_FLAG(msg, i);
 617                 ifmodes >>= 1;
 618                 i++;
 619         }
 620
 621         nla_nest_end(msg, nl_modes);
 622         return 0;
 623
 624 nla_put_failure:
 625         return -ENOBUFS;
 626 }
 627
 628 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 629                                           struct sk_buff *msg)
 630 {
 631         struct nlattr *nl_combis;
 632         int i, j;
 633
 634         nl_combis = nla_nest_start(msg,
 635                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 636         if (!nl_combis)
 637                 goto nla_put_failure;
 638
 639         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 640                 const struct ieee80211_iface_combination *c;
 641                 struct nlattr *nl_combi, *nl_limits;
 642
 643                 c = &wiphy->iface_combinations[i];
 644
 645                 nl_combi = nla_nest_start(msg, i + 1);
 646                 if (!nl_combi)
 647                         goto nla_put_failure;
 648
 649                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 650                 if (!nl_limits)
 651                         goto nla_put_failure;
 652
 653                 for (j = 0; j < c->n_limits; j++) {
 654                         struct nlattr *nl_limit;
 655
 656                         nl_limit = nla_nest_start(msg, j + 1);
 657                         if (!nl_limit)
 658                                 goto nla_put_failure;
 659                         NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
 660                                     c->limits[j].max);
 661                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 662                                                 c->limits[j].types))
 663                                 goto nla_put_failure;
 664                         nla_nest_end(msg, nl_limit);
 665                 }
 666
 667                 nla_nest_end(msg, nl_limits);
 668
 669                 if (c->beacon_int_infra_match)
 670                         NLA_PUT_FLAG(msg,
 671                                 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
 672                 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 673                             c->num_different_channels);
 674                 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
 675                             c->max_interfaces);
 676
 677                 nla_nest_end(msg, nl_combi);
 678         }
 679
 680         nla_nest_end(msg, nl_combis);
 681
 682         return 0;
 683 nla_put_failure:
 684         return -ENOBUFS;
 685 }
 686
 687 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 688                               struct cfg80211_registered_device *dev)
 689 {
 690         void *hdr;
 691         struct nlattr *nl_bands, *nl_band;
 692         struct nlattr *nl_freqs, *nl_freq;
 693         struct nlattr *nl_rates, *nl_rate;
 694         struct nlattr *nl_cmds;
 695         enum ieee80211_band band;
 696         struct ieee80211_channel *chan;
 697         struct ieee80211_rate *rate;
 698         int i;
 699         const struct ieee80211_txrx_stypes *mgmt_stypes =
 700                                 dev->wiphy.mgmt_stypes;
 701
 702         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
 703         if (!hdr)
 704                 return -1;
 705
 706         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
 707         NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
 708
 709         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
 710                     cfg80211_rdev_list_generation);
 711
 712         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
 713                    dev->wiphy.retry_short);
 714         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
 715                    dev->wiphy.retry_long);
 716         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
 717                     dev->wiphy.frag_threshold);
 718         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
 719                     dev->wiphy.rts_threshold);
 720         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
 721                     dev->wiphy.coverage_class);
 722         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
 723                    dev->wiphy.max_scan_ssids);
 724         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
 725                    dev->wiphy.max_sched_scan_ssids);
 726         NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
 727                     dev->wiphy.max_scan_ie_len);
 728         NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
 729                     dev->wiphy.max_sched_scan_ie_len);
 730         NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
 731                    dev->wiphy.max_match_sets);
 732
 733         if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
 734                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
 735         if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
 736                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
 737         if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
 738                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
 739         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
 740                 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
 741         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)
 742                 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_SUPPORT);
 743         if (dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)
 744                 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP);
 745
 746         NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
 747                 sizeof(u32) * dev->wiphy.n_cipher_suites,
 748                 dev->wiphy.cipher_suites);
 749
 750         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
 751                    dev->wiphy.max_num_pmkids);
 752
 753         if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
 754                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
 755
 756         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
 757                     dev->wiphy.available_antennas_tx);
 758         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
 759                     dev->wiphy.available_antennas_rx);
 760
 761         if ((dev->wiphy.available_antennas_tx ||
 762              dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
 763                 u32 tx_ant = 0, rx_ant = 0;
 764                 int res;
 765                 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
 766                 if (!res) {
 767                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
 768                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
 769                 }
 770         }
 771
 772         if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
 773                                 dev->wiphy.interface_modes))
 774                 goto nla_put_failure;
 775
 776         nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
 777         if (!nl_bands)
 778                 goto nla_put_failure;
 779
 780         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 781                 if (!dev->wiphy.bands[band])
 782                         continue;
 783
 784                 nl_band = nla_nest_start(msg, band);
 785                 if (!nl_band)
 786                         goto nla_put_failure;
 787
 788                 /* add HT info */
 789                 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
 790                         NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
 791                                 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
 792                                 &dev->wiphy.bands[band]->ht_cap.mcs);
 793                         NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
 794                                 dev->wiphy.bands[band]->ht_cap.cap);
 795                         NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
 796                                 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
 797                         NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
 798                                 dev->wiphy.bands[band]->ht_cap.ampdu_density);
 799                 }
 800
 801                 /* add frequencies */
 802                 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
 803                 if (!nl_freqs)
 804                         goto nla_put_failure;
 805
 806                 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
 807                         nl_freq = nla_nest_start(msg, i);
 808                         if (!nl_freq)
 809                                 goto nla_put_failure;
 810
 811                         chan = &dev->wiphy.bands[band]->channels[i];
 812
 813                         if (nl80211_msg_put_channel(msg, chan))
 814                                 goto nla_put_failure;
 815
 816                         nla_nest_end(msg, nl_freq);
 817                 }
 818
 819                 nla_nest_end(msg, nl_freqs);
 820
 821                 /* add bitrates */
 822                 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
 823                 if (!nl_rates)
 824                         goto nla_put_failure;
 825
 826                 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
 827                         nl_rate = nla_nest_start(msg, i);
 828                         if (!nl_rate)
 829                                 goto nla_put_failure;
 830
 831                         rate = &dev->wiphy.bands[band]->bitrates[i];
 832                         NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
 833                                     rate->bitrate);
 834                         if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
 835                                 NLA_PUT_FLAG(msg,
 836                                         NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
 837
 838                         nla_nest_end(msg, nl_rate);
 839                 }
 840
 841                 nla_nest_end(msg, nl_rates);
 842
 843                 nla_nest_end(msg, nl_band);
 844         }
 845         nla_nest_end(msg, nl_bands);
 846
 847         nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
 848         if (!nl_cmds)
 849                 goto nla_put_failure;
 850
 851         i = 0;
 852 #define CMD(op, n)                                              \
 853          do {                                                   \
 854                 if (dev->ops->op) {                             \
 855                         i++;                                    \
 856                         NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
 857                 }                                               \
 858         } while (0)
 859
 860         CMD(add_virtual_intf, NEW_INTERFACE);
 861         CMD(change_virtual_intf, SET_INTERFACE);
 862         CMD(add_key, NEW_KEY);
 863         CMD(add_beacon, NEW_BEACON);
 864         CMD(add_station, NEW_STATION);
 865         CMD(add_mpath, NEW_MPATH);
 866         CMD(update_mesh_config, SET_MESH_CONFIG);
 867         CMD(change_bss, SET_BSS);
 868         CMD(auth, AUTHENTICATE);
 869         CMD(assoc, ASSOCIATE);
 870         CMD(deauth, DEAUTHENTICATE);
 871         CMD(disassoc, DISASSOCIATE);
 872         CMD(join_ibss, JOIN_IBSS);
 873         CMD(join_mesh, JOIN_MESH);
 874         CMD(set_pmksa, SET_PMKSA);
 875         CMD(del_pmksa, DEL_PMKSA);
 876         CMD(flush_pmksa, FLUSH_PMKSA);
 877         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
 878         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
 879         CMD(mgmt_tx, FRAME);
 880         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
 881         if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
 882                 i++;
 883                 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
 884         }
 885         CMD(set_channel, SET_CHANNEL);
 886         CMD(set_wds_peer, SET_WDS_PEER);
 887         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
 888                 CMD(tdls_mgmt, TDLS_MGMT);
 889                 CMD(tdls_oper, TDLS_OPER);
 890         }
 891         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
 892                 CMD(sched_scan_start, START_SCHED_SCAN);
 893
 894 #undef CMD
 895
 896         if (dev->ops->connect || dev->ops->auth) {
 897                 i++;
 898                 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
 899         }
 900
 901         if (dev->ops->disconnect || dev->ops->deauth) {
 902                 i++;
 903                 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
 904         }
 905
 906         nla_nest_end(msg, nl_cmds);
 907
 908         if (dev->ops->remain_on_channel)
 909                 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
 910                             dev->wiphy.max_remain_on_channel_duration);
 911
 912         if (dev->ops->mgmt_tx_cancel_wait)
 913                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
 914
 915         if (mgmt_stypes) {
 916                 u16 stypes;
 917                 struct nlattr *nl_ftypes, *nl_ifs;
 918                 enum nl80211_iftype ift;
 919
 920                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
 921                 if (!nl_ifs)
 922                         goto nla_put_failure;
 923
 924                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
 925                         nl_ftypes = nla_nest_start(msg, ift);
 926                         if (!nl_ftypes)
 927                                 goto nla_put_failure;
 928                         i = 0;
 929                         stypes = mgmt_stypes[ift].tx;
 930                         while (stypes) {
 931                                 if (stypes & 1)
 932                                         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
 933                                                     (i << 4) | IEEE80211_FTYPE_MGMT);
 934                                 stypes >>= 1;
 935                                 i++;
 936                         }
 937                         nla_nest_end(msg, nl_ftypes);
 938                 }
 939
 940                 nla_nest_end(msg, nl_ifs);
 941
 942                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
 943                 if (!nl_ifs)
 944                         goto nla_put_failure;
 945
 946                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
 947                         nl_ftypes = nla_nest_start(msg, ift);
 948                         if (!nl_ftypes)
 949                                 goto nla_put_failure;
 950                         i = 0;
 951                         stypes = mgmt_stypes[ift].rx;
 952                         while (stypes) {
 953                                 if (stypes & 1)
 954                                         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
 955                                                     (i << 4) | IEEE80211_FTYPE_MGMT);
 956                                 stypes >>= 1;
 957                                 i++;
 958                         }
 959                         nla_nest_end(msg, nl_ftypes);
 960                 }
 961                 nla_nest_end(msg, nl_ifs);
 962         }
 963
 964         if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
 965                 struct nlattr *nl_wowlan;
 966
 967                 nl_wowlan = nla_nest_start(msg,
 968                                 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 969                 if (!nl_wowlan)
 970                         goto nla_put_failure;
 971
 972                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
 973                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
 974                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
 975                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
 976                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
 977                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
 978                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
 979                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
 980                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
 981                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
 982                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
 983                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
 984                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
 985                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
 986                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
 987                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
 988                 if (dev->wiphy.wowlan.n_patterns) {
 989                         struct nl80211_wowlan_pattern_support pat = {
 990                                 .max_patterns = dev->wiphy.wowlan.n_patterns,
 991                                 .min_pattern_len =
 992                                         dev->wiphy.wowlan.pattern_min_len,
 993                                 .max_pattern_len =
 994                                         dev->wiphy.wowlan.pattern_max_len,
 995                         };
 996                         NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
 997                                 sizeof(pat), &pat);
 998                 }
 999
1000                 nla_nest_end(msg, nl_wowlan);
1001         }
1002
1003         if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1004                                 dev->wiphy.software_iftypes))
1005                 goto nla_put_failure;
1006
1007         if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1008                 goto nla_put_failure;
1009
1010         return genlmsg_end(msg, hdr);
1011
1012  nla_put_failure:
1013         genlmsg_cancel(msg, hdr);
1014         return -EMSGSIZE;
1015 }
1016
1017 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1018 {
1019         int idx = 0;
1020         int start = cb->args[0];
1021         struct cfg80211_registered_device *dev;
1022
1023         mutex_lock(&cfg80211_mutex);
1024         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1025                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1026                         continue;
1027                 if (++idx <= start)
1028                         continue;
1029                 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1030                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
1031                                        dev) < 0) {
1032                         idx--;
1033                         break;
1034                 }
1035         }
1036         mutex_unlock(&cfg80211_mutex);
1037
1038         cb->args[0] = idx;
1039
1040         return skb->len;
1041 }
1042
1043 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1044 {
1045         struct sk_buff *msg;
1046         struct cfg80211_registered_device *dev = info->user_ptr[0];
1047
1048         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1049         if (!msg)
1050                 return -ENOMEM;
1051
1052         if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1053                 nlmsg_free(msg);
1054                 return -ENOBUFS;
1055         }
1056
1057         return genlmsg_reply(msg, info);
1058 }
1059
1060 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1061         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1062         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1063         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1064         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1065         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1066 };
1067
1068 static int parse_txq_params(struct nlattr *tb[],
1069                             struct ieee80211_txq_params *txq_params)
1070 {
1071         if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1072             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1073             !tb[NL80211_TXQ_ATTR_AIFS])
1074                 return -EINVAL;
1075
1076         txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1077         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1078         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1079         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1080         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1081
1082         return 0;
1083 }
1084
1085 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1086 {
1087         /*
1088          * You can only set the channel explicitly for AP, mesh
1089          * and WDS type interfaces; all others have their channel
1090          * managed via their respective "establish a connection"
1091          * command (connect, join, ...)
1092          *
1093          * Monitors are special as they are normally slaved to
1094          * whatever else is going on, so they behave as though
1095          * you tried setting the wiphy channel itself.
1096          */
1097         return !wdev ||
1098                 wdev->iftype == NL80211_IFTYPE_AP ||
1099                 wdev->iftype == NL80211_IFTYPE_WDS ||
1100                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1101                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1102                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1103 }
1104
1105 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1106                                  struct wireless_dev *wdev,
1107                                  struct genl_info *info)
1108 {
1109         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1110         u32 freq;
1111         int result;
1112
1113         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1114                 return -EINVAL;
1115
1116         if (!nl80211_can_set_dev_channel(wdev))
1117                 return -EOPNOTSUPP;
1118
1119         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1120                 channel_type = nla_get_u32(info->attrs[
1121                                    NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1122                 if (channel_type != NL80211_CHAN_NO_HT &&
1123                     channel_type != NL80211_CHAN_HT20 &&
1124                     channel_type != NL80211_CHAN_HT40PLUS &&
1125                     channel_type != NL80211_CHAN_HT40MINUS)
1126                         return -EINVAL;
1127         }
1128
1129         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1130
1131         mutex_lock(&rdev->devlist_mtx);
1132         if (wdev) {
1133                 wdev_lock(wdev);
1134                 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1135                 wdev_unlock(wdev);
1136         } else {
1137                 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1138         }
1139         mutex_unlock(&rdev->devlist_mtx);
1140
1141         return result;
1142 }
1143
1144 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1145 {
1146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1147         struct net_device *netdev = info->user_ptr[1];
1148
1149         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1150 }
1151
1152 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1153 {
1154         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1155         struct net_device *dev = info->user_ptr[1];
1156         struct wireless_dev *wdev = dev->ieee80211_ptr;
1157         const u8 *bssid;
1158
1159         if (!info->attrs[NL80211_ATTR_MAC])
1160                 return -EINVAL;
1161
1162         if (netif_running(dev))
1163                 return -EBUSY;
1164
1165         if (!rdev->ops->set_wds_peer)
1166                 return -EOPNOTSUPP;
1167
1168         if (wdev->iftype != NL80211_IFTYPE_WDS)
1169                 return -EOPNOTSUPP;
1170
1171         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1172         return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1173 }
1174
1175
1176 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1177 {
1178         struct cfg80211_registered_device *rdev;
1179         struct net_device *netdev = NULL;
1180         struct wireless_dev *wdev;
1181         int result = 0, rem_txq_params = 0;
1182         struct nlattr *nl_txq_params;
1183         u32 changed;
1184         u8 retry_short = 0, retry_long = 0;
1185         u32 frag_threshold = 0, rts_threshold = 0;
1186         u8 coverage_class = 0;
1187
1188         /*
1189          * Try to find the wiphy and netdev. Normally this
1190          * function shouldn't need the netdev, but this is
1191          * done for backward compatibility -- previously
1192          * setting the channel was done per wiphy, but now
1193          * it is per netdev. Previous userland like hostapd
1194          * also passed a netdev to set_wiphy, so that it is
1195          * possible to let that go to the right netdev!
1196          */
1197         mutex_lock(&cfg80211_mutex);
1198
1199         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1200                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1201
1202                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1203                 if (netdev && netdev->ieee80211_ptr) {
1204                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1205                         mutex_lock(&rdev->mtx);
1206                 } else
1207                         netdev = NULL;
1208         }
1209
1210         if (!netdev) {
1211                 rdev = __cfg80211_rdev_from_info(info);
1212                 if (IS_ERR(rdev)) {
1213                         mutex_unlock(&cfg80211_mutex);
1214                         return PTR_ERR(rdev);
1215                 }
1216                 wdev = NULL;
1217                 netdev = NULL;
1218                 result = 0;
1219
1220                 mutex_lock(&rdev->mtx);
1221         } else if (netif_running(netdev) &&
1222                    nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1223                 wdev = netdev->ieee80211_ptr;
1224         else
1225                 wdev = NULL;
1226
1227         /*
1228          * end workaround code, by now the rdev is available
1229          * and locked, and wdev may or may not be NULL.
1230          */
1231
1232         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1233                 result = cfg80211_dev_rename(
1234                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1235
1236         mutex_unlock(&cfg80211_mutex);
1237
1238         if (result)
1239                 goto bad_res;
1240
1241         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1242                 struct ieee80211_txq_params txq_params;
1243                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1244
1245                 if (!rdev->ops->set_txq_params) {
1246                         result = -EOPNOTSUPP;
1247                         goto bad_res;
1248                 }
1249
1250                 if (!netdev) {
1251                         result = -EINVAL;
1252                         goto bad_res;
1253                 }
1254
1255                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1256                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1257                         result = -EINVAL;
1258                         goto bad_res;
1259                 }
1260
1261                 if (!netif_running(netdev)) {
1262                         result = -ENETDOWN;
1263                         goto bad_res;
1264                 }
1265
1266                 nla_for_each_nested(nl_txq_params,
1267                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1268                                     rem_txq_params) {
1269                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1270                                   nla_data(nl_txq_params),
1271                                   nla_len(nl_txq_params),
1272                                   txq_params_policy);
1273                         result = parse_txq_params(tb, &txq_params);
1274                         if (result)
1275                                 goto bad_res;
1276
1277                         result = rdev->ops->set_txq_params(&rdev->wiphy,
1278                                                            netdev,
1279                                                            &txq_params);
1280                         if (result)
1281                                 goto bad_res;
1282                 }
1283         }
1284
1285         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1286                 result = __nl80211_set_channel(rdev, wdev, info);
1287                 if (result)
1288                         goto bad_res;
1289         }
1290
1291         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1292                 enum nl80211_tx_power_setting type;
1293                 int idx, mbm = 0;
1294
1295                 if (!rdev->ops->set_tx_power) {
1296                         result = -EOPNOTSUPP;
1297                         goto bad_res;
1298                 }
1299
1300                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1301                 type = nla_get_u32(info->attrs[idx]);
1302
1303                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1304                     (type != NL80211_TX_POWER_AUTOMATIC)) {
1305                         result = -EINVAL;
1306                         goto bad_res;
1307                 }
1308
1309                 if (type != NL80211_TX_POWER_AUTOMATIC) {
1310                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1311                         mbm = nla_get_u32(info->attrs[idx]);
1312                 }
1313
1314                 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1315                 if (result)
1316                         goto bad_res;
1317         }
1318
1319         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1320             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1321                 u32 tx_ant, rx_ant;
1322                 if ((!rdev->wiphy.available_antennas_tx &&
1323                      !rdev->wiphy.available_antennas_rx) ||
1324                     !rdev->ops->set_antenna) {
1325                         result = -EOPNOTSUPP;
1326                         goto bad_res;
1327                 }
1328
1329                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1330                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1331
1332                 /* reject antenna configurations which don't match the
1333                  * available antenna masks, except for the "all" mask */
1334                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1335                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1336                         result = -EINVAL;
1337                         goto bad_res;
1338                 }
1339
1340                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1341                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1342
1343                 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1344                 if (result)
1345                         goto bad_res;
1346         }
1347
1348         changed = 0;
1349
1350         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1351                 retry_short = nla_get_u8(
1352                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1353                 if (retry_short == 0) {
1354                         result = -EINVAL;
1355                         goto bad_res;
1356                 }
1357                 changed |= WIPHY_PARAM_RETRY_SHORT;
1358         }
1359
1360         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1361                 retry_long = nla_get_u8(
1362                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1363                 if (retry_long == 0) {
1364                         result = -EINVAL;
1365                         goto bad_res;
1366                 }
1367                 changed |= WIPHY_PARAM_RETRY_LONG;
1368         }
1369
1370         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1371                 frag_threshold = nla_get_u32(
1372                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1373                 if (frag_threshold < 256) {
1374                         result = -EINVAL;
1375                         goto bad_res;
1376                 }
1377                 if (frag_threshold != (u32) -1) {
1378                         /*
1379                          * Fragments (apart from the last one) are required to
1380                          * have even length. Make the fragmentation code
1381                          * simpler by stripping LSB should someone try to use
1382                          * odd threshold value.
1383                          */
1384                         frag_threshold &= ~0x1;
1385                 }
1386                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1387         }
1388
1389         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1390                 rts_threshold = nla_get_u32(
1391                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1392                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1393         }
1394
1395         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1396                 coverage_class = nla_get_u8(
1397                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1398                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1399         }
1400
1401         if (changed) {
1402                 u8 old_retry_short, old_retry_long;
1403                 u32 old_frag_threshold, old_rts_threshold;
1404                 u8 old_coverage_class;
1405
1406                 if (!rdev->ops->set_wiphy_params) {
1407                         result = -EOPNOTSUPP;
1408                         goto bad_res;
1409                 }
1410
1411                 old_retry_short = rdev->wiphy.retry_short;
1412                 old_retry_long = rdev->wiphy.retry_long;
1413                 old_frag_threshold = rdev->wiphy.frag_threshold;
1414                 old_rts_threshold = rdev->wiphy.rts_threshold;
1415                 old_coverage_class = rdev->wiphy.coverage_class;
1416
1417                 if (changed & WIPHY_PARAM_RETRY_SHORT)
1418                         rdev->wiphy.retry_short = retry_short;
1419                 if (changed & WIPHY_PARAM_RETRY_LONG)
1420                         rdev->wiphy.retry_long = retry_long;
1421                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1422                         rdev->wiphy.frag_threshold = frag_threshold;
1423                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1424                         rdev->wiphy.rts_threshold = rts_threshold;
1425                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1426                         rdev->wiphy.coverage_class = coverage_class;
1427
1428                 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1429                 if (result) {
1430                         rdev->wiphy.retry_short = old_retry_short;
1431                         rdev->wiphy.retry_long = old_retry_long;
1432                         rdev->wiphy.frag_threshold = old_frag_threshold;
1433                         rdev->wiphy.rts_threshold = old_rts_threshold;
1434                         rdev->wiphy.coverage_class = old_coverage_class;
1435                 }
1436         }
1437
1438  bad_res:
1439         mutex_unlock(&rdev->mtx);
1440         if (netdev)
1441                 dev_put(netdev);
1442         return result;
1443 }
1444
1445
1446 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1447                               struct cfg80211_registered_device *rdev,
1448                               struct net_device *dev)
1449 {
1450         void *hdr;
1451
1452         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1453         if (!hdr)
1454                 return -1;
1455
1456         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1457         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1458         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1459         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1460
1461         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1462                     rdev->devlist_generation ^
1463                         (cfg80211_rdev_list_generation << 2));
1464
1465         return genlmsg_end(msg, hdr);
1466
1467  nla_put_failure:
1468         genlmsg_cancel(msg, hdr);
1469         return -EMSGSIZE;
1470 }
1471
1472 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1473 {
1474         int wp_idx = 0;
1475         int if_idx = 0;
1476         int wp_start = cb->args[0];
1477         int if_start = cb->args[1];
1478         struct cfg80211_registered_device *rdev;
1479         struct wireless_dev *wdev;
1480
1481         mutex_lock(&cfg80211_mutex);
1482         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1483                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1484                         continue;
1485                 if (wp_idx < wp_start) {
1486                         wp_idx++;
1487                         continue;
1488                 }
1489                 if_idx = 0;
1490
1491                 mutex_lock(&rdev->devlist_mtx);
1492                 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1493                         if (if_idx < if_start) {
1494                                 if_idx++;
1495                                 continue;
1496                         }
1497                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1498                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
1499                                                rdev, wdev->netdev) < 0) {
1500                                 mutex_unlock(&rdev->devlist_mtx);
1501                                 goto out;
1502                         }
1503                         if_idx++;
1504                 }
1505                 mutex_unlock(&rdev->devlist_mtx);
1506
1507                 wp_idx++;
1508         }
1509  out:
1510         mutex_unlock(&cfg80211_mutex);
1511
1512         cb->args[0] = wp_idx;
1513         cb->args[1] = if_idx;
1514
1515         return skb->len;
1516 }
1517
1518 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1519 {
1520         struct sk_buff *msg;
1521         struct cfg80211_registered_device *dev = info->user_ptr[0];
1522         struct net_device *netdev = info->user_ptr[1];
1523
1524         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1525         if (!msg)
1526                 return -ENOMEM;
1527
1528         if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1529                                dev, netdev) < 0) {
1530                 nlmsg_free(msg);
1531                 return -ENOBUFS;
1532         }
1533
1534         return genlmsg_reply(msg, info);
1535 }
1536
1537 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1538         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1539         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1540         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1541         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1542         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1543 };
1544
1545 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1546 {
1547         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1548         int flag;
1549
1550         *mntrflags = 0;
1551
1552         if (!nla)
1553                 return -EINVAL;
1554
1555         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1556                              nla, mntr_flags_policy))
1557                 return -EINVAL;
1558
1559         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1560                 if (flags[flag])
1561                         *mntrflags |= (1<<flag);
1562
1563         return 0;
1564 }
1565
1566 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1567                                struct net_device *netdev, u8 use_4addr,
1568                                enum nl80211_iftype iftype)
1569 {
1570         if (!use_4addr) {
1571                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1572                         return -EBUSY;
1573                 return 0;
1574         }
1575
1576         switch (iftype) {
1577         case NL80211_IFTYPE_AP_VLAN:
1578                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1579                         return 0;
1580                 break;
1581         case NL80211_IFTYPE_STATION:
1582                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1583                         return 0;
1584                 break;
1585         default:
1586                 break;
1587         }
1588
1589         return -EOPNOTSUPP;
1590 }
1591
1592 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1593 {
1594         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1595         struct vif_params params;
1596         int err;
1597         enum nl80211_iftype otype, ntype;
1598         struct net_device *dev = info->user_ptr[1];
1599         u32 _flags, *flags = NULL;
1600         bool change = false;
1601
1602         memset(&params, 0, sizeof(params));
1603
1604         otype = ntype = dev->ieee80211_ptr->iftype;
1605
1606         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1607                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1608                 if (otype != ntype)
1609                         change = true;
1610                 if (ntype > NL80211_IFTYPE_MAX)
1611                         return -EINVAL;
1612         }
1613
1614         if (info->attrs[NL80211_ATTR_MESH_ID]) {
1615                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1616
1617                 if (ntype != NL80211_IFTYPE_MESH_POINT)
1618                         return -EINVAL;
1619                 if (netif_running(dev))
1620                         return -EBUSY;
1621
1622                 wdev_lock(wdev);
1623                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1624                              IEEE80211_MAX_MESH_ID_LEN);
1625                 wdev->mesh_id_up_len =
1626                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1627                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1628                        wdev->mesh_id_up_len);
1629                 wdev_unlock(wdev);
1630         }
1631
1632         if (info->attrs[NL80211_ATTR_4ADDR]) {
1633                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1634                 change = true;
1635                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1636                 if (err)
1637                         return err;
1638         } else {
1639                 params.use_4addr = -1;
1640         }
1641
1642         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1643                 if (ntype != NL80211_IFTYPE_MONITOR)
1644                         return -EINVAL;
1645                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1646                                           &_flags);
1647                 if (err)
1648                         return err;
1649
1650                 flags = &_flags;
1651                 change = true;
1652         }
1653
1654         if (change)
1655                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1656         else
1657                 err = 0;
1658
1659         if (!err && params.use_4addr != -1)
1660                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1661
1662         return err;
1663 }
1664
1665 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1666 {
1667         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1668         struct vif_params params;
1669         struct net_device *dev;
1670         int err;
1671         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1672         u32 flags;
1673
1674         memset(&params, 0, sizeof(params));
1675
1676         if (!info->attrs[NL80211_ATTR_IFNAME])
1677                 return -EINVAL;
1678
1679         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1680                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1681                 if (type > NL80211_IFTYPE_MAX)
1682                         return -EINVAL;
1683         }
1684
1685         if (!rdev->ops->add_virtual_intf ||
1686             !(rdev->wiphy.interface_modes & (1 << type)))
1687                 return -EOPNOTSUPP;
1688
1689         if (info->attrs[NL80211_ATTR_4ADDR]) {
1690                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1691                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1692                 if (err)
1693                         return err;
1694         }
1695
1696         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1697                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1698                                   &flags);
1699         dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1700                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1701                 type, err ? NULL : &flags, &params);
1702         if (IS_ERR(dev))
1703                 return PTR_ERR(dev);
1704
1705         if (type == NL80211_IFTYPE_MESH_POINT &&
1706             info->attrs[NL80211_ATTR_MESH_ID]) {
1707                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1708
1709                 wdev_lock(wdev);
1710                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1711                              IEEE80211_MAX_MESH_ID_LEN);
1712                 wdev->mesh_id_up_len =
1713                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1714                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1715                        wdev->mesh_id_up_len);
1716                 wdev_unlock(wdev);
1717         }
1718
1719         return 0;
1720 }
1721
1722 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1723 {
1724         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1725         struct net_device *dev = info->user_ptr[1];
1726
1727         if (!rdev->ops->del_virtual_intf)
1728                 return -EOPNOTSUPP;
1729
1730         return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1731 }
1732
1733 struct get_key_cookie {
1734         struct sk_buff *msg;
1735         int error;
1736         int idx;
1737 };
1738
1739 static void get_key_callback(void *c, struct key_params *params)
1740 {
1741         struct nlattr *key;
1742         struct get_key_cookie *cookie = c;
1743
1744         if (params->key)
1745                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1746                         params->key_len, params->key);
1747
1748         if (params->seq)
1749                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1750                         params->seq_len, params->seq);
1751
1752         if (params->cipher)
1753                 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1754                             params->cipher);
1755
1756         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1757         if (!key)
1758                 goto nla_put_failure;
1759
1760         if (params->key)
1761                 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1762                         params->key_len, params->key);
1763
1764         if (params->seq)
1765                 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1766                         params->seq_len, params->seq);
1767
1768         if (params->cipher)
1769                 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1770                             params->cipher);
1771
1772         NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1773
1774         nla_nest_end(cookie->msg, key);
1775
1776         return;
1777  nla_put_failure:
1778         cookie->error = 1;
1779 }
1780
1781 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1782 {
1783         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1784         int err;
1785         struct net_device *dev = info->user_ptr[1];
1786         u8 key_idx = 0;
1787         const u8 *mac_addr = NULL;
1788         bool pairwise;
1789         struct get_key_cookie cookie = {
1790                 .error = 0,
1791         };
1792         void *hdr;
1793         struct sk_buff *msg;
1794
1795         if (info->attrs[NL80211_ATTR_KEY_IDX])
1796                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1797
1798         if (key_idx > 5)
1799                 return -EINVAL;
1800
1801         if (info->attrs[NL80211_ATTR_MAC])
1802                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1803
1804         pairwise = !!mac_addr;
1805         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1806                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1807                 if (kt >= NUM_NL80211_KEYTYPES)
1808                         return -EINVAL;
1809                 if (kt != NL80211_KEYTYPE_GROUP &&
1810                     kt != NL80211_KEYTYPE_PAIRWISE)
1811                         return -EINVAL;
1812                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1813         }
1814
1815         if (!rdev->ops->get_key)
1816                 return -EOPNOTSUPP;
1817
1818         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1819                 return -ENOENT;
1820
1821         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1822         if (!msg)
1823                 return -ENOMEM;
1824
1825         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1826                              NL80211_CMD_NEW_KEY);
1827         if (IS_ERR(hdr))
1828                 return PTR_ERR(hdr);
1829
1830         cookie.msg = msg;
1831         cookie.idx = key_idx;
1832
1833         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1834         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1835         if (mac_addr)
1836                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1837
1838         err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1839                                  mac_addr, &cookie, get_key_callback);
1840
1841         if (err)
1842                 goto free_msg;
1843
1844         if (cookie.error)
1845                 goto nla_put_failure;
1846
1847         genlmsg_end(msg, hdr);
1848         return genlmsg_reply(msg, info);
1849
1850  nla_put_failure:
1851         err = -ENOBUFS;
1852  free_msg:
1853         nlmsg_free(msg);
1854         return err;
1855 }
1856
1857 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1858 {
1859         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1860         struct key_parse key;
1861         int err;
1862         struct net_device *dev = info->user_ptr[1];
1863
1864         err = nl80211_parse_key(info, &key);
1865         if (err)
1866                 return err;
1867
1868         if (key.idx < 0)
1869                 return -EINVAL;
1870
1871         /* only support setting default key */
1872         if (!key.def && !key.defmgmt)
1873                 return -EINVAL;
1874
1875         wdev_lock(dev->ieee80211_ptr);
1876
1877         if (key.def) {
1878                 if (!rdev->ops->set_default_key) {
1879                         err = -EOPNOTSUPP;
1880                         goto out;
1881                 }
1882
1883                 err = nl80211_key_allowed(dev->ieee80211_ptr);
1884                 if (err)
1885                         goto out;
1886
1887                 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1888                                                  key.def_uni, key.def_multi);
1889
1890                 if (err)
1891                         goto out;
1892
1893 #ifdef CONFIG_CFG80211_WEXT
1894                 dev->ieee80211_ptr->wext.default_key = key.idx;
1895 #endif
1896         } else {
1897                 if (key.def_uni || !key.def_multi) {
1898                         err = -EINVAL;
1899                         goto out;
1900                 }
1901
1902                 if (!rdev->ops->set_default_mgmt_key) {
1903                         err = -EOPNOTSUPP;
1904                         goto out;
1905                 }
1906
1907                 err = nl80211_key_allowed(dev->ieee80211_ptr);
1908                 if (err)
1909                         goto out;
1910
1911                 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1912                                                       dev, key.idx);
1913                 if (err)
1914                         goto out;
1915
1916 #ifdef CONFIG_CFG80211_WEXT
1917                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1918 #endif
1919         }
1920
1921  out:
1922         wdev_unlock(dev->ieee80211_ptr);
1923
1924         return err;
1925 }
1926
1927 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1928 {
1929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1930         int err;
1931         struct net_device *dev = info->user_ptr[1];
1932         struct key_parse key;
1933         const u8 *mac_addr = NULL;
1934
1935         err = nl80211_parse_key(info, &key);
1936         if (err)
1937                 return err;
1938
1939         if (!key.p.key)
1940                 return -EINVAL;
1941
1942         if (info->attrs[NL80211_ATTR_MAC])
1943                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1944
1945         if (key.type == -1) {
1946                 if (mac_addr)
1947                         key.type = NL80211_KEYTYPE_PAIRWISE;
1948                 else
1949                         key.type = NL80211_KEYTYPE_GROUP;
1950         }
1951
1952         /* for now */
1953         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1954             key.type != NL80211_KEYTYPE_GROUP)
1955                 return -EINVAL;
1956
1957         if (!rdev->ops->add_key)
1958                 return -EOPNOTSUPP;
1959
1960         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1961                                            key.type == NL80211_KEYTYPE_PAIRWISE,
1962                                            mac_addr))
1963                 return -EINVAL;
1964
1965         wdev_lock(dev->ieee80211_ptr);
1966         err = nl80211_key_allowed(dev->ieee80211_ptr);
1967         if (!err)
1968                 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1969                                          key.type == NL80211_KEYTYPE_PAIRWISE,
1970                                          mac_addr, &key.p);
1971         wdev_unlock(dev->ieee80211_ptr);
1972
1973         return err;
1974 }
1975
1976 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1977 {
1978         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1979         int err;
1980         struct net_device *dev = info->user_ptr[1];
1981         u8 *mac_addr = NULL;
1982         struct key_parse key;
1983
1984         err = nl80211_parse_key(info, &key);
1985         if (err)
1986                 return err;
1987
1988         if (info->attrs[NL80211_ATTR_MAC])
1989                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1990
1991         if (key.type == -1) {
1992                 if (mac_addr)
1993                         key.type = NL80211_KEYTYPE_PAIRWISE;
1994                 else
1995                         key.type = NL80211_KEYTYPE_GROUP;
1996         }
1997
1998         /* for now */
1999         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2000             key.type != NL80211_KEYTYPE_GROUP)
2001                 return -EINVAL;
2002
2003         if (!rdev->ops->del_key)
2004                 return -EOPNOTSUPP;
2005
2006         wdev_lock(dev->ieee80211_ptr);
2007         err = nl80211_key_allowed(dev->ieee80211_ptr);
2008
2009         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
2010             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2011                 err = -ENOENT;
2012
2013         if (!err)
2014                 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2015                                          key.type == NL80211_KEYTYPE_PAIRWISE,
2016                                          mac_addr);
2017
2018 #ifdef CONFIG_CFG80211_WEXT
2019         if (!err) {
2020                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2021                         dev->ieee80211_ptr->wext.default_key = -1;
2022                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2023                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2024         }
2025 #endif
2026         wdev_unlock(dev->ieee80211_ptr);
2027
2028         return err;
2029 }
2030
2031 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2032 {
2033         int (*call)(struct wiphy *wiphy, struct net_device *dev,
2034                     struct beacon_parameters *info);
2035         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2036         struct net_device *dev = info->user_ptr[1];
2037         struct wireless_dev *wdev = dev->ieee80211_ptr;
2038         struct beacon_parameters params;
2039         int haveinfo = 0, err;
2040
2041         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2042             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2043             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2044             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2045                 return -EINVAL;
2046
2047         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2048             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2049                 return -EOPNOTSUPP;
2050
2051         memset(&params, 0, sizeof(params));
2052
2053         switch (info->genlhdr->cmd) {
2054         case NL80211_CMD_NEW_BEACON:
2055                 /* these are required for NEW_BEACON */
2056                 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2057                     !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2058                     !info->attrs[NL80211_ATTR_BEACON_HEAD])
2059                         return -EINVAL;
2060
2061                 params.interval =
2062                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2063                 params.dtim_period =
2064                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2065
2066                 err = cfg80211_validate_beacon_int(rdev, params.interval);
2067                 if (err)
2068                         return err;
2069
2070                 /*
2071                  * In theory, some of these attributes could be required for
2072                  * NEW_BEACON, but since they were not used when the command was
2073                  * originally added, keep them optional for old user space
2074                  * programs to work with drivers that do not need the additional
2075                  * information.
2076                  */
2077                 if (info->attrs[NL80211_ATTR_SSID]) {
2078                         params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2079                         params.ssid_len =
2080                                 nla_len(info->attrs[NL80211_ATTR_SSID]);
2081                         if (params.ssid_len == 0 ||
2082                             params.ssid_len > IEEE80211_MAX_SSID_LEN)
2083                                 return -EINVAL;
2084                 }
2085
2086                 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2087                         params.hidden_ssid = nla_get_u32(
2088                                 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2089                         if (params.hidden_ssid !=
2090                             NL80211_HIDDEN_SSID_NOT_IN_USE &&
2091                             params.hidden_ssid !=
2092                             NL80211_HIDDEN_SSID_ZERO_LEN &&
2093                             params.hidden_ssid !=
2094                             NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2095                                 return -EINVAL;
2096                 }
2097
2098                 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2099
2100                 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2101                         params.auth_type = nla_get_u32(
2102                                 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2103                         if (!nl80211_valid_auth_type(params.auth_type))
2104                                 return -EINVAL;
2105                 } else
2106                         params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2107
2108                 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2109                                               NL80211_MAX_NR_CIPHER_SUITES);
2110                 if (err)
2111                         return err;
2112
2113                 call = rdev->ops->add_beacon;
2114                 break;
2115         case NL80211_CMD_SET_BEACON:
2116                 call = rdev->ops->set_beacon;
2117                 break;
2118         default:
2119                 WARN_ON(1);
2120                 return -EOPNOTSUPP;
2121         }
2122
2123         if (!call)
2124                 return -EOPNOTSUPP;
2125
2126         if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2127                 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2128                 params.head_len =
2129                     nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2130                 haveinfo = 1;
2131         }
2132
2133         if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2134                 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2135                 params.tail_len =
2136                     nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2137                 haveinfo = 1;
2138         }
2139
2140         if (!haveinfo)
2141                 return -EINVAL;
2142
2143         if (info->attrs[NL80211_ATTR_IE]) {
2144                 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2145                 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2146         }
2147
2148         if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2149                 params.proberesp_ies =
2150                         nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2151                 params.proberesp_ies_len =
2152                         nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2153         }
2154
2155         if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2156                 params.assocresp_ies =
2157                         nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2158                 params.assocresp_ies_len =
2159                         nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2160         }
2161
2162         err = call(&rdev->wiphy, dev, &params);
2163         if (!err && params.interval)
2164                 wdev->beacon_interval = params.interval;
2165         return err;
2166 }
2167
2168 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2169 {
2170         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2171         struct net_device *dev = info->user_ptr[1];
2172         struct wireless_dev *wdev = dev->ieee80211_ptr;
2173         int err;
2174
2175         if (!rdev->ops->del_beacon)
2176                 return -EOPNOTSUPP;
2177
2178         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2179             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2180                 return -EOPNOTSUPP;
2181
2182         err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2183         if (!err)
2184                 wdev->beacon_interval = 0;
2185         return err;
2186 }
2187
2188 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2189         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2190         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2191         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2192         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2193         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2194 };
2195
2196 static int parse_station_flags(struct genl_info *info,
2197                                struct station_parameters *params)
2198 {
2199         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2200         struct nlattr *nla;
2201         int flag;
2202
2203         /*
2204          * Try parsing the new attribute first so userspace
2205          * can specify both for older kernels.
2206          */
2207         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2208         if (nla) {
2209                 struct nl80211_sta_flag_update *sta_flags;
2210
2211                 sta_flags = nla_data(nla);
2212                 params->sta_flags_mask = sta_flags->mask;
2213                 params->sta_flags_set = sta_flags->set;
2214                 if ((params->sta_flags_mask |
2215                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2216                         return -EINVAL;
2217                 return 0;
2218         }
2219
2220         /* if present, parse the old attribute */
2221
2222         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2223         if (!nla)
2224                 return 0;
2225
2226         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2227                              nla, sta_flags_policy))
2228                 return -EINVAL;
2229
2230         params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2231         params->sta_flags_mask &= ~1;
2232
2233         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2234                 if (flags[flag])
2235                         params->sta_flags_set |= (1<<flag);
2236
2237         return 0;
2238 }
2239
2240 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2241                                  int attr)
2242 {
2243         struct nlattr *rate;
2244         u16 bitrate;
2245
2246         rate = nla_nest_start(msg, attr);
2247         if (!rate)
2248                 goto nla_put_failure;
2249
2250         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2251         bitrate = cfg80211_calculate_bitrate(info);
2252         if (bitrate > 0)
2253                 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2254
2255         if (info->flags & RATE_INFO_FLAGS_MCS)
2256                 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2257         if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2258                 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2259         if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2260                 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2261
2262         nla_nest_end(msg, rate);
2263         return true;
2264
2265 nla_put_failure:
2266         return false;
2267 }
2268
2269 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2270                                 int flags, struct net_device *dev,
2271                                 const u8 *mac_addr, struct station_info *sinfo)
2272 {
2273         void *hdr;
2274         struct nlattr *sinfoattr, *bss_param;
2275
2276         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2277         if (!hdr)
2278                 return -1;
2279
2280         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2281         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2282
2283         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2284
2285         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2286         if (!sinfoattr)
2287                 goto nla_put_failure;
2288         if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2289                 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2290                             sinfo->connected_time);
2291         if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2292                 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2293                             sinfo->inactive_time);
2294         if (sinfo->filled & STATION_INFO_RX_BYTES)
2295                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2296                             sinfo->rx_bytes);
2297         if (sinfo->filled & STATION_INFO_TX_BYTES)
2298                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2299                             sinfo->tx_bytes);
2300         if (sinfo->filled & STATION_INFO_LLID)
2301                 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2302                             sinfo->llid);
2303         if (sinfo->filled & STATION_INFO_PLID)
2304                 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2305                             sinfo->plid);
2306         if (sinfo->filled & STATION_INFO_PLINK_STATE)
2307                 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2308                             sinfo->plink_state);
2309         if (sinfo->filled & STATION_INFO_SIGNAL)
2310                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2311                            sinfo->signal);
2312         if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2313                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2314                            sinfo->signal_avg);
2315         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2316                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2317                                           NL80211_STA_INFO_TX_BITRATE))
2318                         goto nla_put_failure;
2319         }
2320         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2321                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2322                                           NL80211_STA_INFO_RX_BITRATE))
2323                         goto nla_put_failure;
2324         }
2325         if (sinfo->filled & STATION_INFO_RX_PACKETS)
2326                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2327                             sinfo->rx_packets);
2328         if (sinfo->filled & STATION_INFO_TX_PACKETS)
2329                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2330                             sinfo->tx_packets);
2331         if (sinfo->filled & STATION_INFO_TX_RETRIES)
2332                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2333                             sinfo->tx_retries);
2334         if (sinfo->filled & STATION_INFO_TX_FAILED)
2335                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2336                             sinfo->tx_failed);
2337         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2338                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2339                 if (!bss_param)
2340                         goto nla_put_failure;
2341
2342                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2343                         NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2344                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2345                         NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2346                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2347                         NLA_PUT_FLAG(msg,
2348                                      NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2349                 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2350                            sinfo->bss_param.dtim_period);
2351                 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2352                             sinfo->bss_param.beacon_interval);
2353
2354                 nla_nest_end(msg, bss_param);
2355         }
2356         if (sinfo->filled & STATION_INFO_STA_FLAGS)
2357                 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2358                         sizeof(struct nl80211_sta_flag_update),
2359                         &sinfo->sta_flags);
2360         nla_nest_end(msg, sinfoattr);
2361
2362         if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2363                 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2364                         sinfo->assoc_req_ies);
2365
2366         return genlmsg_end(msg, hdr);
2367
2368  nla_put_failure:
2369         genlmsg_cancel(msg, hdr);
2370         return -EMSGSIZE;
2371 }
2372
2373 static int nl80211_dump_station(struct sk_buff *skb,
2374                                 struct netlink_callback *cb)
2375 {
2376         struct station_info sinfo;
2377         struct cfg80211_registered_device *dev;
2378         struct net_device *netdev;
2379         u8 mac_addr[ETH_ALEN];
2380         int sta_idx = cb->args[1];
2381         int err;
2382
2383         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2384         if (err)
2385                 return err;
2386
2387         if (!dev->ops->dump_station) {
2388                 err = -EOPNOTSUPP;
2389                 goto out_err;
2390         }
2391
2392         while (1) {
2393                 memset(&sinfo, 0, sizeof(sinfo));
2394                 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2395                                              mac_addr, &sinfo);
2396                 if (err == -ENOENT)
2397                         break;
2398                 if (err)
2399                         goto out_err;
2400
2401                 if (nl80211_send_station(skb,
2402                                 NETLINK_CB(cb->skb).pid,
2403                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2404                                 netdev, mac_addr,
2405                                 &sinfo) < 0)
2406                         goto out;
2407
2408                 sta_idx++;
2409         }
2410
2411
2412  out:
2413         cb->args[1] = sta_idx;
2414         err = skb->len;
2415  out_err:
2416         nl80211_finish_netdev_dump(dev);
2417
2418         return err;
2419 }
2420
2421 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2422 {
2423         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2424         struct net_device *dev = info->user_ptr[1];
2425         struct station_info sinfo;
2426         struct sk_buff *msg;
2427         u8 *mac_addr = NULL;
2428         int err;
2429
2430         memset(&sinfo, 0, sizeof(sinfo));
2431
2432         if (!info->attrs[NL80211_ATTR_MAC])
2433                 return -EINVAL;
2434
2435         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2436
2437         if (!rdev->ops->get_station)
2438                 return -EOPNOTSUPP;
2439
2440         err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2441         if (err)
2442                 return err;
2443
2444         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2445         if (!msg)
2446                 return -ENOMEM;
2447
2448         if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2449                                  dev, mac_addr, &sinfo) < 0) {
2450                 nlmsg_free(msg);
2451                 return -ENOBUFS;
2452         }
2453
2454         return genlmsg_reply(msg, info);
2455 }
2456
2457 /*
2458  * Get vlan interface making sure it is running and on the right wiphy.
2459  */
2460 static int get_vlan(struct genl_info *info,
2461                     struct cfg80211_registered_device *rdev,
2462                     struct net_device **vlan)
2463 {
2464         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2465         *vlan = NULL;
2466
2467         if (vlanattr) {
2468                 *vlan = dev_get_by_index(genl_info_net(info),
2469                                          nla_get_u32(vlanattr));
2470                 if (!*vlan)
2471                         return -ENODEV;
2472                 if (!(*vlan)->ieee80211_ptr)
2473                         return -EINVAL;
2474                 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2475                         return -EINVAL;
2476                 if (!netif_running(*vlan))
2477                         return -ENETDOWN;
2478         }
2479         return 0;
2480 }
2481
2482 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2483 {
2484         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2485         int err;
2486         struct net_device *dev = info->user_ptr[1];
2487         struct station_parameters params;
2488         u8 *mac_addr = NULL;
2489
2490         memset(&params, 0, sizeof(params));
2491
2492         params.listen_interval = -1;
2493         params.plink_state = -1;
2494
2495         if (info->attrs[NL80211_ATTR_STA_AID])
2496                 return -EINVAL;
2497
2498         if (!info->attrs[NL80211_ATTR_MAC])
2499                 return -EINVAL;
2500
2501         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2502
2503         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2504                 params.supported_rates =
2505                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2506                 params.supported_rates_len =
2507                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2508         }
2509
2510         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2511                 params.listen_interval =
2512                     nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2513
2514         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2515                 params.ht_capa =
2516                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2517
2518         if (parse_station_flags(info, &params))
2519                 return -EINVAL;
2520
2521         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2522                 params.plink_action =
2523                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2524
2525         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2526                 params.plink_state =
2527                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2528
2529         err = get_vlan(info, rdev, &params.vlan);
2530         if (err)
2531                 goto out;
2532
2533         /* validate settings */
2534         err = 0;
2535
2536         switch (dev->ieee80211_ptr->iftype) {
2537         case NL80211_IFTYPE_AP:
2538         case NL80211_IFTYPE_AP_VLAN:
2539         case NL80211_IFTYPE_P2P_GO:
2540                 /* disallow mesh-specific things */
2541                 if (params.plink_action)
2542                         err = -EINVAL;
2543                 break;
2544         case NL80211_IFTYPE_P2P_CLIENT:
2545         case NL80211_IFTYPE_STATION:
2546                 /* disallow things sta doesn't support */
2547                 if (params.plink_action)
2548                         err = -EINVAL;
2549                 if (params.vlan)
2550                         err = -EINVAL;
2551                 if (params.supported_rates &&
2552                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2553                         err = -EINVAL;
2554                 if (params.ht_capa)
2555                         err = -EINVAL;
2556                 if (params.listen_interval >= 0)
2557                         err = -EINVAL;
2558                 if (params.sta_flags_mask &
2559                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2560                                   BIT(NL80211_STA_FLAG_TDLS_PEER)))
2561                         err = -EINVAL;
2562                 /* can't change the TDLS bit */
2563                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2564                     (params.sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2565                         err = -EINVAL;
2566                 break;
2567         case NL80211_IFTYPE_MESH_POINT:
2568                 /* disallow things mesh doesn't support */
2569                 if (params.vlan)
2570                         err = -EINVAL;
2571                 if (params.ht_capa)
2572                         err = -EINVAL;
2573                 if (params.listen_interval >= 0)
2574                         err = -EINVAL;
2575                 if (params.sta_flags_mask &
2576                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2577                                   BIT(NL80211_STA_FLAG_MFP) |
2578                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
2579                         err = -EINVAL;
2580                 break;
2581         default:
2582                 err = -EINVAL;
2583         }
2584
2585         if (err)
2586                 goto out;
2587
2588         if (!rdev->ops->change_station) {
2589                 err = -EOPNOTSUPP;
2590                 goto out;
2591         }
2592
2593         err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2594
2595  out:
2596         if (params.vlan)
2597                 dev_put(params.vlan);
2598
2599         return err;
2600 }
2601
2602 static struct nla_policy
2603 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2604         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2605         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2606 };
2607
2608 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2609 {
2610         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2611         int err;
2612         struct net_device *dev = info->user_ptr[1];
2613         struct station_parameters params;
2614         u8 *mac_addr = NULL;
2615
2616         memset(&params, 0, sizeof(params));
2617
2618         if (!info->attrs[NL80211_ATTR_MAC])
2619                 return -EINVAL;
2620
2621         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2622                 return -EINVAL;
2623
2624         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2625                 return -EINVAL;
2626
2627         if (!info->attrs[NL80211_ATTR_STA_AID])
2628                 return -EINVAL;
2629
2630         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2631         params.supported_rates =
2632                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2633         params.supported_rates_len =
2634                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2635         params.listen_interval =
2636                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2637
2638         params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2639         if (!params.aid || params.aid > IEEE80211_MAX_AID)
2640                 return -EINVAL;
2641
2642         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2643                 params.ht_capa =
2644                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2645
2646         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2647                 params.plink_action =
2648                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2649
2650         if (parse_station_flags(info, &params))
2651                 return -EINVAL;
2652
2653         /* HT requires QoS, but if we don't have that just ignore HT/VHT
2654          * as userspace might just pass through the capabilities from the IEs
2655          * directly, rather than enforcing this restriction and returning an
2656          * error in this case.
2657          */
2658         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
2659                 params.ht_capa = NULL;
2660
2661         /* parse WME attributes if sta is WME capable */
2662         if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2663             (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2664             info->attrs[NL80211_ATTR_STA_WME]) {
2665                 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2666                 struct nlattr *nla;
2667
2668                 nla = info->attrs[NL80211_ATTR_STA_WME];
2669                 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2670                                        nl80211_sta_wme_policy);
2671                 if (err)
2672                         return err;
2673
2674                 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2675                         params.uapsd_queues =
2676                              nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2677                 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2678                         return -EINVAL;
2679
2680                 if (tb[NL80211_STA_WME_MAX_SP])
2681                         params.max_sp =
2682                              nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2683
2684                 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2685                         return -EINVAL;
2686
2687                 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2688         }
2689
2690         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2691             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2692             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2693             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO &&
2694             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
2695                 return -EINVAL;
2696
2697         /*
2698          * Only managed stations can add TDLS peers, and only when the
2699          * wiphy supports external TDLS setup.
2700          */
2701         if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION &&
2702             !((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2703               (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2704               (rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)))
2705                 return -EINVAL;
2706
2707         err = get_vlan(info, rdev, &params.vlan);
2708         if (err)
2709                 goto out;
2710
2711         /* validate settings */
2712         err = 0;
2713
2714         if (!rdev->ops->add_station) {
2715                 err = -EOPNOTSUPP;
2716                 goto out;
2717         }
2718
2719         err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2720
2721  out:
2722         if (params.vlan)
2723                 dev_put(params.vlan);
2724         return err;
2725 }
2726
2727 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2728 {
2729         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2730         struct net_device *dev = info->user_ptr[1];
2731         u8 *mac_addr = NULL;
2732
2733         if (info->attrs[NL80211_ATTR_MAC])
2734                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2735
2736         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2737             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2738             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2739             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2740                 return -EINVAL;
2741
2742         if (!rdev->ops->del_station)
2743                 return -EOPNOTSUPP;
2744
2745         return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2746 }
2747
2748 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2749                                 int flags, struct net_device *dev,
2750                                 u8 *dst, u8 *next_hop,
2751                                 struct mpath_info *pinfo)
2752 {
2753         void *hdr;
2754         struct nlattr *pinfoattr;
2755
2756         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2757         if (!hdr)
2758                 return -1;
2759
2760         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2761         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2762         NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2763
2764         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2765
2766         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2767         if (!pinfoattr)
2768                 goto nla_put_failure;
2769         if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2770                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2771                             pinfo->frame_qlen);
2772         if (pinfo->filled & MPATH_INFO_SN)
2773                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2774                             pinfo->sn);
2775         if (pinfo->filled & MPATH_INFO_METRIC)
2776                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2777                             pinfo->metric);
2778         if (pinfo->filled & MPATH_INFO_EXPTIME)
2779                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2780                             pinfo->exptime);
2781         if (pinfo->filled & MPATH_INFO_FLAGS)
2782                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2783                             pinfo->flags);
2784         if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2785                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2786                             pinfo->discovery_timeout);
2787         if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2788                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2789                             pinfo->discovery_retries);
2790
2791         nla_nest_end(msg, pinfoattr);
2792
2793         return genlmsg_end(msg, hdr);
2794
2795  nla_put_failure:
2796         genlmsg_cancel(msg, hdr);
2797         return -EMSGSIZE;
2798 }
2799
2800 static int nl80211_dump_mpath(struct sk_buff *skb,
2801                               struct netlink_callback *cb)
2802 {
2803         struct mpath_info pinfo;
2804         struct cfg80211_registered_device *dev;
2805         struct net_device *netdev;
2806         u8 dst[ETH_ALEN];
2807         u8 next_hop[ETH_ALEN];
2808         int path_idx = cb->args[1];
2809         int err;
2810
2811         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2812         if (err)
2813                 return err;
2814
2815         if (!dev->ops->dump_mpath) {
2816                 err = -EOPNOTSUPP;
2817                 goto out_err;
2818         }
2819
2820         if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2821                 err = -EOPNOTSUPP;
2822                 goto out_err;
2823         }
2824
2825         while (1) {
2826                 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2827                                            dst, next_hop, &pinfo);
2828                 if (err == -ENOENT)
2829                         break;
2830                 if (err)
2831                         goto out_err;
2832
2833                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2834                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
2835                                        netdev, dst, next_hop,
2836                                        &pinfo) < 0)
2837                         goto out;
2838
2839                 path_idx++;
2840         }
2841
2842
2843  out:
2844         cb->args[1] = path_idx;
2845         err = skb->len;
2846  out_err:
2847         nl80211_finish_netdev_dump(dev);
2848         return err;
2849 }
2850
2851 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2852 {
2853         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2854         int err;
2855         struct net_device *dev = info->user_ptr[1];
2856         struct mpath_info pinfo;
2857         struct sk_buff *msg;
2858         u8 *dst = NULL;
2859         u8 next_hop[ETH_ALEN];
2860
2861         memset(&pinfo, 0, sizeof(pinfo));
2862
2863         if (!info->attrs[NL80211_ATTR_MAC])
2864                 return -EINVAL;
2865
2866         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2867
2868         if (!rdev->ops->get_mpath)
2869                 return -EOPNOTSUPP;
2870
2871         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2872                 return -EOPNOTSUPP;
2873
2874         err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2875         if (err)
2876                 return err;
2877
2878         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2879         if (!msg)
2880                 return -ENOMEM;
2881
2882         if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2883                                  dev, dst, next_hop, &pinfo) < 0) {
2884                 nlmsg_free(msg);
2885                 return -ENOBUFS;
2886         }
2887
2888         return genlmsg_reply(msg, info);
2889 }
2890
2891 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2892 {
2893         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2894         struct net_device *dev = info->user_ptr[1];
2895         u8 *dst = NULL;
2896         u8 *next_hop = NULL;
2897
2898         if (!info->attrs[NL80211_ATTR_MAC])
2899                 return -EINVAL;
2900
2901         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2902                 return -EINVAL;
2903
2904         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2905         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2906
2907         if (!rdev->ops->change_mpath)
2908                 return -EOPNOTSUPP;
2909
2910         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2911                 return -EOPNOTSUPP;
2912
2913         return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2914 }
2915
2916 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2917 {
2918         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2919         struct net_device *dev = info->user_ptr[1];
2920         u8 *dst = NULL;
2921         u8 *next_hop = NULL;
2922
2923         if (!info->attrs[NL80211_ATTR_MAC])
2924                 return -EINVAL;
2925
2926         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2927                 return -EINVAL;
2928
2929         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2930         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2931
2932         if (!rdev->ops->add_mpath)
2933                 return -EOPNOTSUPP;
2934
2935         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2936                 return -EOPNOTSUPP;
2937
2938         return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2939 }
2940
2941 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2942 {
2943         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2944         struct net_device *dev = info->user_ptr[1];
2945         u8 *dst = NULL;
2946
2947         if (info->attrs[NL80211_ATTR_MAC])
2948                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2949
2950         if (!rdev->ops->del_mpath)
2951                 return -EOPNOTSUPP;
2952
2953         return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2954 }
2955
2956 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2957 {
2958         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2959         struct net_device *dev = info->user_ptr[1];
2960         struct bss_parameters params;
2961
2962         memset(&params, 0, sizeof(params));
2963         /* default to not changing parameters */
2964         params.use_cts_prot = -1;
2965         params.use_short_preamble = -1;
2966         params.use_short_slot_time = -1;
2967         params.ap_isolate = -1;
2968         params.ht_opmode = -1;
2969
2970         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2971                 params.use_cts_prot =
2972                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2973         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2974                 params.use_short_preamble =
2975                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2976         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2977                 params.use_short_slot_time =
2978                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2979         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2980                 params.basic_rates =
2981                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2982                 params.basic_rates_len =
2983                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2984         }
2985         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2986                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2987         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2988                 params.ht_opmode =
2989                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2990
2991         if (!rdev->ops->change_bss)
2992                 return -EOPNOTSUPP;
2993
2994         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2995             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2996                 return -EOPNOTSUPP;
2997
2998         return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2999 }
3000
3001 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3002         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
3003         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
3004         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
3005         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
3006         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
3007         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
3008 };
3009
3010 static int parse_reg_rule(struct nlattr *tb[],
3011         struct ieee80211_reg_rule *reg_rule)
3012 {
3013         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3014         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3015
3016         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3017                 return -EINVAL;
3018         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3019                 return -EINVAL;
3020         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3021                 return -EINVAL;
3022         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3023                 return -EINVAL;
3024         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3025                 return -EINVAL;
3026
3027         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3028
3029         freq_range->start_freq_khz =
3030                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3031         freq_range->end_freq_khz =
3032                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3033         freq_range->max_bandwidth_khz =
3034                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3035
3036         power_rule->max_eirp =
3037                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3038
3039         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3040                 power_rule->max_antenna_gain =
3041                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3042
3043         return 0;
3044 }
3045
3046 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3047 {
3048         int r;
3049         char *data = NULL;
3050
3051         /*
3052          * You should only get this when cfg80211 hasn't yet initialized
3053          * completely when built-in to the kernel right between the time
3054          * window between nl80211_init() and regulatory_init(), if that is
3055          * even possible.
3056          */
3057         mutex_lock(&cfg80211_mutex);
3058         if (unlikely(!cfg80211_regdomain)) {
3059                 mutex_unlock(&cfg80211_mutex);
3060                 return -EINPROGRESS;
3061         }
3062         mutex_unlock(&cfg80211_mutex);
3063
3064         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3065                 return -EINVAL;
3066
3067         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3068
3069         r = regulatory_hint_user(data);
3070
3071         return r;
3072 }
3073
3074 static int nl80211_get_mesh_config(struct sk_buff *skb,
3075                                    struct genl_info *info)
3076 {
3077         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3078         struct net_device *dev = info->user_ptr[1];
3079         struct wireless_dev *wdev = dev->ieee80211_ptr;
3080         struct mesh_config cur_params;
3081         int err = 0;
3082         void *hdr;
3083         struct nlattr *pinfoattr;
3084         struct sk_buff *msg;
3085
3086         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3087                 return -EOPNOTSUPP;
3088
3089         if (!rdev->ops->get_mesh_config)
3090                 return -EOPNOTSUPP;
3091
3092         wdev_lock(wdev);
3093         /* If not connected, get default parameters */
3094         if (!wdev->mesh_id_len)
3095                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3096         else
3097                 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3098                                                  &cur_params);
3099         wdev_unlock(wdev);
3100
3101         if (err)
3102                 return err;
3103
3104         /* Draw up a netlink message to send back */
3105         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3106         if (!msg)
3107                 return -ENOMEM;
3108         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3109                              NL80211_CMD_GET_MESH_CONFIG);
3110         if (!hdr)
3111                 goto out;
3112         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3113         if (!pinfoattr)
3114                 goto nla_put_failure;
3115         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3116         NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3117                         cur_params.dot11MeshRetryTimeout);
3118         NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3119                         cur_params.dot11MeshConfirmTimeout);
3120         NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3121                         cur_params.dot11MeshHoldingTimeout);
3122         NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3123                         cur_params.dot11MeshMaxPeerLinks);
3124         NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3125                         cur_params.dot11MeshMaxRetries);
3126         NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3127                         cur_params.dot11MeshTTL);
3128         NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3129                         cur_params.element_ttl);
3130         NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3131                         cur_params.auto_open_plinks);
3132         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3133                         cur_params.dot11MeshHWMPmaxPREQretries);
3134         NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3135                         cur_params.path_refresh_time);
3136         NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3137                         cur_params.min_discovery_timeout);
3138         NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3139                         cur_params.dot11MeshHWMPactivePathTimeout);
3140         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3141                         cur_params.dot11MeshHWMPpreqMinInterval);
3142         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3143                         cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3144         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3145                         cur_params.dot11MeshHWMPRootMode);
3146         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3147                         cur_params.dot11MeshHWMPRannInterval);
3148         NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3149                         cur_params.dot11MeshGateAnnouncementProtocol);
3150         nla_nest_end(msg, pinfoattr);
3151         genlmsg_end(msg, hdr);
3152         return genlmsg_reply(msg, info);
3153
3154  nla_put_failure:
3155         genlmsg_cancel(msg, hdr);
3156  out:
3157         nlmsg_free(msg);
3158         return -ENOBUFS;
3159 }
3160
3161 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3162         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3163         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3164         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3165         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3166         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3167         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3168         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3169         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3170
3171         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3172         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3173         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3174         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3175         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3176         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3177         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3178         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3179         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3180 };
3181
3182 static const struct nla_policy
3183         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3184         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3185         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3186         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3187         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3188                 .len = IEEE80211_MAX_DATA_LEN },
3189         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3190 };
3191
3192 static int nl80211_parse_mesh_config(struct genl_info *info,
3193                                      struct mesh_config *cfg,
3194                                      u32 *mask_out)
3195 {
3196         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3197         u32 mask = 0;
3198
3199 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3200 do {\
3201         if (table[attr_num]) {\
3202                 cfg->param = nla_fn(table[attr_num]); \
3203                 mask |= (1 << (attr_num - 1)); \
3204         } \
3205 } while (0);\
3206
3207
3208         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3209                 return -EINVAL;
3210         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3211                              info->attrs[NL80211_ATTR_MESH_CONFIG],
3212                              nl80211_meshconf_params_policy))
3213                 return -EINVAL;
3214
3215         /* This makes sure that there aren't more than 32 mesh config
3216          * parameters (otherwise our bitfield scheme would not work.) */
3217         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3218
3219         /* Fill in the params struct */
3220         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3221                         mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3222         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3223                         mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3224         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3225                         mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3226         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3227                         mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3228         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3229                         mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3230         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3231                         mask, NL80211_MESHCONF_TTL, nla_get_u8);
3232         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3233                         mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3234         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3235                         mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3236         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3237                         mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3238                         nla_get_u8);
3239         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3240                         mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3241         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3242                         mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3243                         nla_get_u16);
3244         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3245                         mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3246                         nla_get_u32);
3247         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3248                         mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3249                         nla_get_u16);
3250         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3251                         dot11MeshHWMPnetDiameterTraversalTime,
3252                         mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3253                         nla_get_u16);
3254         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3255                         dot11MeshHWMPRootMode, mask,
3256                         NL80211_MESHCONF_HWMP_ROOTMODE,
3257                         nla_get_u8);
3258         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3259                         dot11MeshHWMPRannInterval, mask,
3260                         NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3261                         nla_get_u16);
3262         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3263                         dot11MeshGateAnnouncementProtocol, mask,
3264                         NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3265                         nla_get_u8);
3266         if (mask_out)
3267                 *mask_out = mask;
3268
3269         return 0;
3270
3271 #undef FILL_IN_MESH_PARAM_IF_SET
3272 }
3273
3274 static int nl80211_parse_mesh_setup(struct genl_info *info,
3275                                      struct mesh_setup *setup)
3276 {
3277         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3278
3279         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3280                 return -EINVAL;
3281         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3282                              info->attrs[NL80211_ATTR_MESH_SETUP],
3283                              nl80211_mesh_setup_params_policy))
3284                 return -EINVAL;
3285
3286         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3287                 setup->path_sel_proto =
3288                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3289                  IEEE80211_PATH_PROTOCOL_VENDOR :
3290                  IEEE80211_PATH_PROTOCOL_HWMP;
3291
3292         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3293                 setup->path_metric =
3294                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3295                  IEEE80211_PATH_METRIC_VENDOR :
3296                  IEEE80211_PATH_METRIC_AIRTIME;
3297
3298
3299         if (tb[NL80211_MESH_SETUP_IE]) {
3300                 struct nlattr *ieattr =
3301                         tb[NL80211_MESH_SETUP_IE];
3302                 if (!is_valid_ie_attr(ieattr))
3303                         return -EINVAL;
3304                 setup->ie = nla_data(ieattr);
3305                 setup->ie_len = nla_len(ieattr);
3306         }
3307         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3308         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3309
3310         return 0;
3311 }
3312
3313 static int nl80211_update_mesh_config(struct sk_buff *skb,
3314                                       struct genl_info *info)
3315 {
3316         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3317         struct net_device *dev = info->user_ptr[1];
3318         struct wireless_dev *wdev = dev->ieee80211_ptr;
3319         struct mesh_config cfg;
3320         u32 mask;
3321         int err;
3322
3323         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3324                 return -EOPNOTSUPP;
3325
3326         if (!rdev->ops->update_mesh_config)
3327                 return -EOPNOTSUPP;
3328
3329         err = nl80211_parse_mesh_config(info, &cfg, &mask);
3330         if (err)
3331                 return err;
3332
3333         wdev_lock(wdev);
3334         if (!wdev->mesh_id_len)
3335                 err = -ENOLINK;
3336
3337         if (!err)
3338                 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3339                                                     mask, &cfg);
3340
3341         wdev_unlock(wdev);
3342
3343         return err;
3344 }
3345
3346 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3347 {
3348         struct sk_buff *msg;
3349         void *hdr = NULL;
3350         struct nlattr *nl_reg_rules;
3351         unsigned int i;
3352         int err = -EINVAL;
3353
3354         mutex_lock(&cfg80211_mutex);
3355
3356         if (!cfg80211_regdomain)
3357                 goto out;
3358
3359         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3360         if (!msg) {
3361                 err = -ENOBUFS;
3362                 goto out;
3363         }
3364
3365         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3366                              NL80211_CMD_GET_REG);
3367         if (!hdr)
3368                 goto put_failure;
3369
3370         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3371                 cfg80211_regdomain->alpha2);
3372
3373         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3374         if (!nl_reg_rules)
3375                 goto nla_put_failure;
3376
3377         for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3378                 struct nlattr *nl_reg_rule;
3379                 const struct ieee80211_reg_rule *reg_rule;
3380                 const struct ieee80211_freq_range *freq_range;
3381                 const struct ieee80211_power_rule *power_rule;
3382
3383                 reg_rule = &cfg80211_regdomain->reg_rules[i];
3384                 freq_range = &reg_rule->freq_range;
3385                 power_rule = &reg_rule->power_rule;
3386
3387                 nl_reg_rule = nla_nest_start(msg, i);
3388                 if (!nl_reg_rule)
3389                         goto nla_put_failure;
3390
3391                 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3392                         reg_rule->flags);
3393                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3394                         freq_range->start_freq_khz);
3395                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3396                         freq_range->end_freq_khz);
3397                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3398                         freq_range->max_bandwidth_khz);
3399                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3400                         power_rule->max_antenna_gain);
3401                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3402                         power_rule->max_eirp);
3403
3404                 nla_nest_end(msg, nl_reg_rule);
3405         }
3406
3407         nla_nest_end(msg, nl_reg_rules);
3408
3409         genlmsg_end(msg, hdr);
3410         err = genlmsg_reply(msg, info);
3411         goto out;
3412
3413 nla_put_failure:
3414         genlmsg_cancel(msg, hdr);
3415 put_failure:
3416         nlmsg_free(msg);
3417         err = -EMSGSIZE;
3418 out:
3419         mutex_unlock(&cfg80211_mutex);
3420         return err;
3421 }
3422
3423 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3424 {
3425         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3426         struct nlattr *nl_reg_rule;
3427         char *alpha2 = NULL;
3428         int rem_reg_rules = 0, r = 0;
3429         u32 num_rules = 0, rule_idx = 0, size_of_regd;
3430         struct ieee80211_regdomain *rd = NULL;
3431
3432         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3433                 return -EINVAL;
3434
3435         if (!info->attrs[NL80211_ATTR_REG_RULES])
3436                 return -EINVAL;
3437
3438         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3439
3440         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3441                         rem_reg_rules) {
3442                 num_rules++;
3443                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3444                         return -EINVAL;
3445         }
3446
3447         mutex_lock(&cfg80211_mutex);
3448
3449         if (!reg_is_valid_request(alpha2)) {
3450                 r = -EINVAL;
3451                 goto bad_reg;
3452         }
3453
3454         size_of_regd = sizeof(struct ieee80211_regdomain) +
3455                 (num_rules * sizeof(struct ieee80211_reg_rule));
3456
3457         rd = kzalloc(size_of_regd, GFP_KERNEL);
3458         if (!rd) {
3459                 r = -ENOMEM;
3460                 goto bad_reg;
3461         }
3462
3463         rd->n_reg_rules = num_rules;
3464         rd->alpha2[0] = alpha2[0];
3465         rd->alpha2[1] = alpha2[1];
3466
3467         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3468                         rem_reg_rules) {
3469                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3470                         nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3471                         reg_rule_policy);
3472                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3473                 if (r)
3474                         goto bad_reg;
3475
3476                 rule_idx++;
3477
3478                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3479                         r = -EINVAL;
3480                         goto bad_reg;
3481                 }
3482         }
3483
3484         BUG_ON(rule_idx != num_rules);
3485
3486         r = set_regdom(rd);
3487
3488         mutex_unlock(&cfg80211_mutex);
3489
3490         return r;
3491
3492  bad_reg:
3493         mutex_unlock(&cfg80211_mutex);
3494         kfree(rd);
3495         return r;
3496 }
3497
3498 static int validate_scan_freqs(struct nlattr *freqs)
3499 {
3500         struct nlattr *attr1, *attr2;
3501         int n_channels = 0, tmp1, tmp2;
3502
3503         nla_for_each_nested(attr1, freqs, tmp1) {
3504                 n_channels++;
3505                 /*
3506                  * Some hardware has a limited channel list for
3507                  * scanning, and it is pretty much nonsensical
3508                  * to scan for a channel twice, so disallow that
3509                  * and don't require drivers to check that the
3510                  * channel list they get isn't longer than what
3511                  * they can scan, as long as they can scan all
3512                  * the channels they registered at once.
3513                  */
3514                 nla_for_each_nested(attr2, freqs, tmp2)
3515                         if (attr1 != attr2 &&
3516                             nla_get_u32(attr1) == nla_get_u32(attr2))
3517                                 return 0;
3518         }
3519
3520         return n_channels;
3521 }
3522
3523 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3524 {
3525         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3526         struct net_device *dev = info->user_ptr[1];
3527         struct cfg80211_scan_request *request;
3528         struct nlattr *attr;
3529         struct wiphy *wiphy;
3530         int err, tmp, n_ssids = 0, n_channels, i;
3531         size_t ie_len;
3532
3533         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3534                 return -EINVAL;
3535
3536         wiphy = &rdev->wiphy;
3537
3538         if (!rdev->ops->scan)
3539                 return -EOPNOTSUPP;
3540
3541         if (rdev->scan_req)
3542                 return -EBUSY;
3543
3544         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3545                 n_channels = validate_scan_freqs(
3546                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3547                 if (!n_channels)
3548                         return -EINVAL;
3549         } else {
3550                 enum ieee80211_band band;
3551                 n_channels = 0;
3552
3553                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3554                         if (wiphy->bands[band])
3555                                 n_channels += wiphy->bands[band]->n_channels;
3556         }
3557
3558         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3559                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3560                         n_ssids++;
3561
3562         if (n_ssids > wiphy->max_scan_ssids)
3563                 return -EINVAL;
3564
3565         if (info->attrs[NL80211_ATTR_IE])
3566                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3567         else
3568                 ie_len = 0;
3569
3570         if (ie_len > wiphy->max_scan_ie_len)
3571                 return -EINVAL;
3572
3573         request = kzalloc(sizeof(*request)
3574                         + sizeof(*request->ssids) * n_ssids
3575                         + sizeof(*request->channels) * n_channels
3576                         + ie_len, GFP_KERNEL);
3577         if (!request)
3578                 return -ENOMEM;
3579
3580         if (n_ssids)
3581                 request->ssids = (void *)&request->channels[n_channels];
3582         request->n_ssids = n_ssids;
3583         if (ie_len) {
3584                 if (request->ssids)
3585                         request->ie = (void *)(request->ssids + n_ssids);
3586                 else
3587                         request->ie = (void *)(request->channels + n_channels);
3588         }
3589
3590         i = 0;
3591         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3592                 /* user specified, bail out if channel not found */
3593                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3594                         struct ieee80211_channel *chan;
3595
3596                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3597
3598                         if (!chan) {
3599                                 err = -EINVAL;
3600                                 goto out_free;
3601                         }
3602
3603                         /* ignore disabled channels */
3604                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3605                                 continue;
3606
3607                         request->channels[i] = chan;
3608                         i++;
3609                 }
3610         } else {
3611                 enum ieee80211_band band;
3612
3613                 /* all channels */
3614                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3615                         int j;
3616                         if (!wiphy->bands[band])
3617                                 continue;
3618                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3619                                 struct ieee80211_channel *chan;
3620
3621                                 chan = &wiphy->bands[band]->channels[j];
3622
3623                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3624                                         continue;
3625
3626                                 request->channels[i] = chan;
3627                                 i++;
3628                         }
3629                 }
3630         }
3631
3632         if (!i) {
3633                 err = -EINVAL;
3634                 goto out_free;
3635         }
3636
3637         request->n_channels = i;
3638
3639         i = 0;
3640         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3641                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3642                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3643                                 err = -EINVAL;
3644                                 goto out_free;
3645                         }
3646                         request->ssids[i].ssid_len = nla_len(attr);
3647                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3648                         i++;
3649                 }
3650         }
3651
3652         if (info->attrs[NL80211_ATTR_IE]) {
3653                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3654                 memcpy((void *)request->ie,
3655                        nla_data(info->attrs[NL80211_ATTR_IE]),
3656                        request->ie_len);
3657         }
3658
3659         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3660                 if (wiphy->bands[i])
3661                         request->rates[i] =
3662                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
3663
3664         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3665                 nla_for_each_nested(attr,
3666                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3667                                     tmp) {
3668                         enum ieee80211_band band = nla_type(attr);
3669
3670                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3671                                 err = -EINVAL;
3672                                 goto out_free;
3673                         }
3674                         err = ieee80211_get_ratemask(wiphy->bands[band],
3675                                                      nla_data(attr),
3676                                                      nla_len(attr),
3677                                                      &request->rates[band]);
3678                         if (err)
3679                                 goto out_free;
3680                 }
3681         }
3682
3683         request->no_cck =
3684                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3685
3686         request->dev = dev;
3687         request->wiphy = &rdev->wiphy;
3688
3689         rdev->scan_req = request;
3690         err = rdev->ops->scan(&rdev->wiphy, dev, request);
3691
3692         if (!err) {
3693                 nl80211_send_scan_start(rdev, dev);
3694                 dev_hold(dev);
3695         } else {
3696  out_free:
3697                 rdev->scan_req = NULL;
3698                 kfree(request);
3699         }
3700
3701         return err;
3702 }
3703
3704 static int nl80211_start_sched_scan(struct sk_buff *skb,
3705                                     struct genl_info *info)
3706 {
3707         struct cfg80211_sched_scan_request *request;
3708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3709         struct net_device *dev = info->user_ptr[1];
3710         struct nlattr *attr;
3711         struct wiphy *wiphy;
3712         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3713         u32 interval;
3714         enum ieee80211_band band;
3715         size_t ie_len;
3716         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3717
3718         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3719             !rdev->ops->sched_scan_start)
3720                 return -EOPNOTSUPP;
3721
3722         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3723                 return -EINVAL;
3724
3725         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3726                 return -EINVAL;
3727
3728         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3729         if (interval == 0)
3730                 return -EINVAL;
3731
3732         wiphy = &rdev->wiphy;
3733
3734         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3735                 n_channels = validate_scan_freqs(
3736                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3737                 if (!n_channels)
3738                         return -EINVAL;
3739         } else {
3740                 n_channels = 0;
3741
3742                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3743                         if (wiphy->bands[band])
3744                                 n_channels += wiphy->bands[band]->n_channels;
3745         }
3746
3747         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3748                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3749                                     tmp)
3750                         n_ssids++;
3751
3752         if (n_ssids > wiphy->max_sched_scan_ssids)
3753                 return -EINVAL;
3754
3755         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3756                 nla_for_each_nested(attr,
3757                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3758                                     tmp)
3759                         n_match_sets++;
3760
3761         if (n_match_sets > wiphy->max_match_sets)
3762                 return -EINVAL;
3763
3764         if (info->attrs[NL80211_ATTR_IE])
3765                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3766         else
3767                 ie_len = 0;
3768
3769         if (ie_len > wiphy->max_sched_scan_ie_len)
3770                 return -EINVAL;
3771
3772         mutex_lock(&rdev->sched_scan_mtx);
3773
3774         if (rdev->sched_scan_req) {
3775                 err = -EINPROGRESS;
3776                 goto out;
3777         }
3778
3779         request = kzalloc(sizeof(*request)
3780                         + sizeof(*request->ssids) * n_ssids
3781                         + sizeof(*request->match_sets) * n_match_sets
3782                         + sizeof(*request->channels) * n_channels
3783                         + ie_len, GFP_KERNEL);
3784         if (!request) {
3785                 err = -ENOMEM;
3786                 goto out;
3787         }
3788
3789         if (n_ssids)
3790                 request->ssids = (void *)&request->channels[n_channels];
3791         request->n_ssids = n_ssids;
3792         if (ie_len) {
3793                 if (request->ssids)
3794                         request->ie = (void *)(request->ssids + n_ssids);
3795                 else
3796                         request->ie = (void *)(request->channels + n_channels);
3797         }
3798
3799         if (n_match_sets) {
3800                 if (request->ie)
3801                         request->match_sets = (void *)(request->ie + ie_len);
3802                 else if (request->ssids)
3803                         request->match_sets =
3804                                 (void *)(request->ssids + n_ssids);
3805                 else
3806                         request->match_sets =
3807                                 (void *)(request->channels + n_channels);
3808         }
3809         request->n_match_sets = n_match_sets;
3810
3811         i = 0;
3812         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3813                 /* user specified, bail out if channel not found */
3814                 nla_for_each_nested(attr,
3815                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3816                                     tmp) {
3817                         struct ieee80211_channel *chan;
3818
3819                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3820
3821                         if (!chan) {
3822                                 err = -EINVAL;
3823                                 goto out_free;
3824                         }
3825
3826                         /* ignore disabled channels */
3827                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3828                                 continue;
3829
3830                         request->channels[i] = chan;
3831                         i++;
3832                 }
3833         } else {
3834                 /* all channels */
3835                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3836                         int j;
3837                         if (!wiphy->bands[band])
3838                                 continue;
3839                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3840                                 struct ieee80211_channel *chan;
3841
3842                                 chan = &wiphy->bands[band]->channels[j];
3843
3844                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3845                                         continue;
3846
3847                                 request->channels[i] = chan;
3848                                 i++;
3849                         }
3850                 }
3851         }
3852
3853         if (!i) {
3854                 err = -EINVAL;
3855                 goto out_free;
3856         }
3857
3858         request->n_channels = i;
3859
3860         i = 0;
3861         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3862                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3863                                     tmp) {
3864                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3865                                 err = -EINVAL;
3866                                 goto out_free;
3867                         }
3868                         request->ssids[i].ssid_len = nla_len(attr);
3869                         memcpy(request->ssids[i].ssid, nla_data(attr),
3870                                nla_len(attr));
3871                         i++;
3872                 }
3873         }
3874
3875         i = 0;
3876         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3877                 nla_for_each_nested(attr,
3878                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3879                                     tmp) {
3880                         struct nlattr *ssid;
3881
3882                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3883                                   nla_data(attr), nla_len(attr),
3884                                   nl80211_match_policy);
3885                         ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3886                         if (ssid) {
3887                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3888                                         err = -EINVAL;
3889                                         goto out_free;
3890                                 }
3891                                 memcpy(request->match_sets[i].ssid.ssid,
3892                                        nla_data(ssid), nla_len(ssid));
3893                                 request->match_sets[i].ssid.ssid_len =
3894                                         nla_len(ssid);
3895                         }
3896                         i++;
3897                 }
3898         }
3899
3900         if (info->attrs[NL80211_ATTR_IE]) {
3901                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3902                 memcpy((void *)request->ie,
3903                        nla_data(info->attrs[NL80211_ATTR_IE]),
3904                        request->ie_len);
3905         }
3906
3907         request->dev = dev;
3908         request->wiphy = &rdev->wiphy;
3909         request->interval = interval;
3910
3911         err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3912         if (!err) {
3913                 rdev->sched_scan_req = request;
3914                 nl80211_send_sched_scan(rdev, dev,
3915                                         NL80211_CMD_START_SCHED_SCAN);
3916                 goto out;
3917         }
3918
3919 out_free:
3920         kfree(request);
3921 out:
3922         mutex_unlock(&rdev->sched_scan_mtx);
3923         return err;
3924 }
3925
3926 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3927                                    struct genl_info *info)
3928 {
3929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3930         int err;
3931
3932         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3933             !rdev->ops->sched_scan_stop)
3934                 return -EOPNOTSUPP;
3935
3936         mutex_lock(&rdev->sched_scan_mtx);
3937         err = __cfg80211_stop_sched_scan(rdev, false);
3938         mutex_unlock(&rdev->sched_scan_mtx);
3939
3940         return err;
3941 }
3942
3943 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3944                             u32 seq, int flags,
3945                             struct cfg80211_registered_device *rdev,
3946                             struct wireless_dev *wdev,
3947                             struct cfg80211_internal_bss *intbss)
3948 {
3949         struct cfg80211_bss *res = &intbss->pub;
3950         void *hdr;
3951         struct nlattr *bss;
3952         int i;
3953
3954         ASSERT_WDEV_LOCK(wdev);
3955
3956         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3957                              NL80211_CMD_NEW_SCAN_RESULTS);
3958         if (!hdr)
3959                 return -1;
3960
3961         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3962
3963         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3964         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3965
3966         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3967         if (!bss)
3968                 goto nla_put_failure;
3969         if (!is_zero_ether_addr(res->bssid))
3970                 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3971         if (res->information_elements && res->len_information_elements)
3972                 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3973                         res->len_information_elements,
3974                         res->information_elements);
3975         if (res->beacon_ies && res->len_beacon_ies &&
3976             res->beacon_ies != res->information_elements)
3977                 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3978                         res->len_beacon_ies, res->beacon_ies);
3979         if (res->tsf)
3980                 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3981         if (res->beacon_interval)
3982                 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3983         NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3984         NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3985         NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3986                 jiffies_to_msecs(jiffies - intbss->ts));
3987
3988         switch (rdev->wiphy.signal_type) {
3989         case CFG80211_SIGNAL_TYPE_MBM:
3990                 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3991                 break;
3992         case CFG80211_SIGNAL_TYPE_UNSPEC:
3993                 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3994                 break;
3995         default:
3996                 break;
3997         }
3998
3999         switch (wdev->iftype) {
4000         case NL80211_IFTYPE_P2P_CLIENT:
4001         case NL80211_IFTYPE_STATION:
4002                 if (intbss == wdev->current_bss)
4003                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4004                                     NL80211_BSS_STATUS_ASSOCIATED);
4005                 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
4006                         if (intbss != wdev->auth_bsses[i])
4007                                 continue;
4008                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4009                                     NL80211_BSS_STATUS_AUTHENTICATED);
4010                         break;
4011                 }
4012                 break;
4013         case NL80211_IFTYPE_ADHOC:
4014                 if (intbss == wdev->current_bss)
4015                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4016                                     NL80211_BSS_STATUS_IBSS_JOINED);
4017                 break;
4018         default:
4019                 break;
4020         }
4021
4022         nla_nest_end(msg, bss);
4023
4024         return genlmsg_end(msg, hdr);
4025
4026  nla_put_failure:
4027         genlmsg_cancel(msg, hdr);
4028         return -EMSGSIZE;
4029 }
4030
4031 static int nl80211_dump_scan(struct sk_buff *skb,
4032                              struct netlink_callback *cb)
4033 {
4034         struct cfg80211_registered_device *rdev;
4035         struct net_device *dev;
4036         struct cfg80211_internal_bss *scan;
4037         struct wireless_dev *wdev;
4038         int start = cb->args[1], idx = 0;
4039         int err;
4040
4041         err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4042         if (err)
4043                 return err;
4044
4045         wdev = dev->ieee80211_ptr;
4046
4047         wdev_lock(wdev);
4048         spin_lock_bh(&rdev->bss_lock);
4049         cfg80211_bss_expire(rdev);
4050
4051         cb->seq = rdev->bss_generation;
4052
4053         list_for_each_entry(scan, &rdev->bss_list, list) {
4054                 if (++idx <= start)
4055                         continue;
4056                 if (nl80211_send_bss(skb, cb,
4057                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4058                                 rdev, wdev, scan) < 0) {
4059                         idx--;
4060                         break;
4061                 }
4062         }
4063
4064         spin_unlock_bh(&rdev->bss_lock);
4065         wdev_unlock(wdev);
4066
4067         cb->args[1] = idx;
4068         nl80211_finish_netdev_dump(rdev);
4069
4070         return skb->len;
4071 }
4072
4073 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4074                                 int flags, struct net_device *dev,
4075                                 struct survey_info *survey)
4076 {
4077         void *hdr;
4078         struct nlattr *infoattr;
4079
4080         hdr = nl80211hdr_put(msg, pid, seq, flags,
4081                              NL80211_CMD_NEW_SURVEY_RESULTS);
4082         if (!hdr)
4083                 return -ENOMEM;
4084
4085         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4086
4087         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4088         if (!infoattr)
4089                 goto nla_put_failure;
4090
4091         NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4092                     survey->channel->center_freq);
4093         if (survey->filled & SURVEY_INFO_NOISE_DBM)
4094                 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4095                             survey->noise);
4096         if (survey->filled & SURVEY_INFO_IN_USE)
4097                 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4098         if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4099                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4100                             survey->channel_time);
4101         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4102                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4103                             survey->channel_time_busy);
4104         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4105                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4106                             survey->channel_time_ext_busy);
4107         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4108                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4109                             survey->channel_time_rx);
4110         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4111                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4112                             survey->channel_time_tx);
4113
4114         nla_nest_end(msg, infoattr);
4115
4116         return genlmsg_end(msg, hdr);
4117
4118  nla_put_failure:
4119         genlmsg_cancel(msg, hdr);
4120         return -EMSGSIZE;
4121 }
4122
4123 static int nl80211_dump_survey(struct sk_buff *skb,
4124                         struct netlink_callback *cb)
4125 {
4126         struct survey_info survey;
4127         struct cfg80211_registered_device *dev;
4128         struct net_device *netdev;
4129         int survey_idx = cb->args[1];
4130         int res;
4131
4132         res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4133         if (res)
4134                 return res;
4135
4136         if (!dev->ops->dump_survey) {
4137                 res = -EOPNOTSUPP;
4138                 goto out_err;
4139         }
4140
4141         while (1) {
4142                 struct ieee80211_channel *chan;
4143
4144                 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4145                                             &survey);
4146                 if (res == -ENOENT)
4147                         break;
4148                 if (res)
4149                         goto out_err;
4150
4151                 /* Survey without a channel doesn't make sense */
4152                 if (!survey.channel) {
4153                         res = -EINVAL;
4154                         goto out;
4155                 }
4156
4157                 chan = ieee80211_get_channel(&dev->wiphy,
4158                                              survey.channel->center_freq);
4159                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4160                         survey_idx++;
4161                         continue;
4162                 }
4163
4164                 if (nl80211_send_survey(skb,
4165                                 NETLINK_CB(cb->skb).pid,
4166                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4167                                 netdev,
4168                                 &survey) < 0)
4169                         goto out;
4170                 survey_idx++;
4171         }
4172
4173  out:
4174         cb->args[1] = survey_idx;
4175         res = skb->len;
4176  out_err:
4177         nl80211_finish_netdev_dump(dev);
4178         return res;
4179 }
4180
4181 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4182 {
4183         return auth_type <= NL80211_AUTHTYPE_MAX;
4184 }
4185
4186 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4187 {
4188         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4189                                   NL80211_WPA_VERSION_2));
4190 }
4191
4192 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4193 {
4194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4195         struct net_device *dev = info->user_ptr[1];
4196         struct ieee80211_channel *chan;
4197         const u8 *bssid, *ssid, *ie = NULL;
4198         int err, ssid_len, ie_len = 0;
4199         enum nl80211_auth_type auth_type;
4200         struct key_parse key;
4201         bool local_state_change;
4202
4203         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4204                 return -EINVAL;
4205
4206         if (!info->attrs[NL80211_ATTR_MAC])
4207                 return -EINVAL;
4208
4209         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4210                 return -EINVAL;
4211
4212         if (!info->attrs[NL80211_ATTR_SSID])
4213                 return -EINVAL;
4214
4215         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4216                 return -EINVAL;
4217
4218         err = nl80211_parse_key(info, &key);
4219         if (err)
4220                 return err;
4221
4222         if (key.idx >= 0) {
4223                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4224                         return -EINVAL;
4225                 if (!key.p.key || !key.p.key_len)
4226                         return -EINVAL;
4227                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4228                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4229                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4230                      key.p.key_len != WLAN_KEY_LEN_WEP104))
4231                         return -EINVAL;
4232                 if (key.idx > 4)
4233                         return -EINVAL;
4234         } else {
4235                 key.p.key_len = 0;
4236                 key.p.key = NULL;
4237         }
4238
4239         if (key.idx >= 0) {
4240                 int i;
4241                 bool ok = false;
4242                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4243                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4244                                 ok = true;
4245                                 break;
4246                         }
4247                 }
4248                 if (!ok)
4249                         return -EINVAL;
4250         }
4251
4252         if (!rdev->ops->auth)
4253                 return -EOPNOTSUPP;
4254
4255         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4256             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4257                 return -EOPNOTSUPP;
4258
4259         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4260         chan = ieee80211_get_channel(&rdev->wiphy,
4261                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4262         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4263                 return -EINVAL;
4264
4265         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4266         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4267
4268         if (info->attrs[NL80211_ATTR_IE]) {
4269                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4270                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4271         }
4272
4273         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4274         if (!nl80211_valid_auth_type(auth_type))
4275                 return -EINVAL;
4276
4277         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4278
4279         return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4280                                   ssid, ssid_len, ie, ie_len,
4281                                   key.p.key, key.p.key_len, key.idx,
4282                                   local_state_change);
4283 }
4284
4285 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4286                                    struct genl_info *info,
4287                                    struct cfg80211_crypto_settings *settings,
4288                                    int cipher_limit)
4289 {
4290         memset(settings, 0, sizeof(*settings));
4291
4292         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4293
4294         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4295                 u16 proto;
4296                 proto = nla_get_u16(
4297                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4298                 settings->control_port_ethertype = cpu_to_be16(proto);
4299                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4300                     proto != ETH_P_PAE)
4301                         return -EINVAL;
4302                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4303                         settings->control_port_no_encrypt = true;
4304         } else
4305                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4306
4307         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4308                 void *data;
4309                 int len, i;
4310
4311                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4312                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4313                 settings->n_ciphers_pairwise = len / sizeof(u32);
4314
4315                 if (len % sizeof(u32))
4316                         return -EINVAL;
4317
4318                 if (settings->n_ciphers_pairwise > cipher_limit)
4319                         return -EINVAL;
4320
4321                 memcpy(settings->ciphers_pairwise, data, len);
4322
4323                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4324                         if (!cfg80211_supported_cipher_suite(
4325                                         &rdev->wiphy,
4326                                         settings->ciphers_pairwise[i]))
4327                                 return -EINVAL;
4328         }
4329
4330         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4331                 settings->cipher_group =
4332                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4333                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4334                                                      settings->cipher_group))
4335                         return -EINVAL;
4336         }
4337
4338         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4339                 settings->wpa_versions =
4340                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4341                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4342                         return -EINVAL;
4343         }
4344
4345         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4346                 void *data;
4347                 int len;
4348
4349                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4350                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4351                 settings->n_akm_suites = len / sizeof(u32);
4352
4353                 if (len % sizeof(u32))
4354                         return -EINVAL;
4355
4356                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4357                         return -EINVAL;
4358
4359                 memcpy(settings->akm_suites, data, len);
4360         }
4361
4362         return 0;
4363 }
4364
4365 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4366 {
4367         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4368         struct net_device *dev = info->user_ptr[1];
4369         struct cfg80211_crypto_settings crypto;
4370         struct ieee80211_channel *chan;
4371         const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4372         int err, ssid_len, ie_len = 0;
4373         bool use_mfp = false;
4374
4375         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4376                 return -EINVAL;
4377
4378         if (!info->attrs[NL80211_ATTR_MAC] ||
4379             !info->attrs[NL80211_ATTR_SSID] ||
4380             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4381                 return -EINVAL;
4382
4383         if (!rdev->ops->assoc)
4384                 return -EOPNOTSUPP;
4385
4386         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4387             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4388                 return -EOPNOTSUPP;
4389
4390         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4391
4392         chan = ieee80211_get_channel(&rdev->wiphy,
4393                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4394         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4395                 return -EINVAL;
4396
4397         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4398         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4399
4400         if (info->attrs[NL80211_ATTR_IE]) {
4401                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4402                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4403         }
4404
4405         if (info->attrs[NL80211_ATTR_USE_MFP]) {
4406                 enum nl80211_mfp mfp =
4407                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4408                 if (mfp == NL80211_MFP_REQUIRED)
4409                         use_mfp = true;
4410                 else if (mfp != NL80211_MFP_NO)
4411                         return -EINVAL;
4412         }
4413
4414         if (info->attrs[NL80211_ATTR_PREV_BSSID])
4415                 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4416
4417         err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4418         if (!err)
4419                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4420                                           ssid, ssid_len, ie, ie_len, use_mfp,
4421                                           &crypto);
4422
4423         return err;
4424 }
4425
4426 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4427 {
4428         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4429         struct net_device *dev = info->user_ptr[1];
4430         const u8 *ie = NULL, *bssid;
4431         int ie_len = 0;
4432         u16 reason_code;
4433         bool local_state_change;
4434
4435         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4436                 return -EINVAL;
4437
4438         if (!info->attrs[NL80211_ATTR_MAC])
4439                 return -EINVAL;
4440
4441         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4442                 return -EINVAL;
4443
4444         if (!rdev->ops->deauth)
4445                 return -EOPNOTSUPP;
4446
4447         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4448             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4449                 return -EOPNOTSUPP;
4450
4451         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4452
4453         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4454         if (reason_code == 0) {
4455                 /* Reason Code 0 is reserved */
4456                 return -EINVAL;
4457         }
4458
4459         if (info->attrs[NL80211_ATTR_IE]) {
4460                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4461                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4462         }
4463
4464         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4465
4466         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4467                                     local_state_change);
4468 }
4469
4470 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4471 {
4472         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4473         struct net_device *dev = info->user_ptr[1];
4474         const u8 *ie = NULL, *bssid;
4475         int ie_len = 0;
4476         u16 reason_code;
4477         bool local_state_change;
4478
4479         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4480                 return -EINVAL;
4481
4482         if (!info->attrs[NL80211_ATTR_MAC])
4483                 return -EINVAL;
4484
4485         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4486                 return -EINVAL;
4487
4488         if (!rdev->ops->disassoc)
4489                 return -EOPNOTSUPP;
4490
4491         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4492             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4493                 return -EOPNOTSUPP;
4494
4495         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4496
4497         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4498         if (reason_code == 0) {
4499                 /* Reason Code 0 is reserved */
4500                 return -EINVAL;
4501         }
4502
4503         if (info->attrs[NL80211_ATTR_IE]) {
4504                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4505                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4506         }
4507
4508         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4509
4510         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4511                                       local_state_change);
4512 }
4513
4514 static bool
4515 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4516                          int mcast_rate[IEEE80211_NUM_BANDS],
4517                          int rateval)
4518 {
4519         struct wiphy *wiphy = &rdev->wiphy;
4520         bool found = false;
4521         int band, i;
4522
4523         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4524                 struct ieee80211_supported_band *sband;
4525
4526                 sband = wiphy->bands[band];
4527                 if (!sband)
4528                         continue;
4529
4530                 for (i = 0; i < sband->n_bitrates; i++) {
4531                         if (sband->bitrates[i].bitrate == rateval) {
4532                                 mcast_rate[band] = i + 1;
4533                                 found = true;
4534                                 break;
4535                         }
4536                 }
4537         }
4538
4539         return found;
4540 }
4541
4542 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4543 {
4544         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4545         struct net_device *dev = info->user_ptr[1];
4546         struct cfg80211_ibss_params ibss;
4547         struct wiphy *wiphy;
4548         struct cfg80211_cached_keys *connkeys = NULL;
4549         int err;
4550
4551         memset(&ibss, 0, sizeof(ibss));
4552
4553         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4554                 return -EINVAL;
4555
4556         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4557             !info->attrs[NL80211_ATTR_SSID] ||
4558             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4559                 return -EINVAL;
4560
4561         ibss.beacon_interval = 100;
4562
4563         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4564                 ibss.beacon_interval =
4565                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4566                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4567                         return -EINVAL;
4568         }
4569
4570         if (!rdev->ops->join_ibss)
4571                 return -EOPNOTSUPP;
4572
4573         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4574                 return -EOPNOTSUPP;
4575
4576         wiphy = &rdev->wiphy;
4577
4578         if (info->attrs[NL80211_ATTR_MAC]) {
4579                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4580
4581                 if (!is_valid_ether_addr(ibss.bssid))
4582                         return -EINVAL;
4583         }
4584         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4585         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4586
4587         if (info->attrs[NL80211_ATTR_IE]) {
4588                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4589                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4590         }
4591
4592         ibss.channel = ieee80211_get_channel(wiphy,
4593                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4594         if (!ibss.channel ||
4595             ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4596             ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4597                 return -EINVAL;
4598
4599         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4600         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4601
4602         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4603                 u8 *rates =
4604                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4605                 int n_rates =
4606                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4607                 struct ieee80211_supported_band *sband =
4608                         wiphy->bands[ibss.channel->band];
4609                 int err;
4610
4611                 err = ieee80211_get_ratemask(sband, rates, n_rates,
4612                                              &ibss.basic_rates);
4613                 if (err)
4614                         return err;
4615         }
4616
4617         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4618             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4619                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4620                 return -EINVAL;
4621
4622         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4623                 connkeys = nl80211_parse_connkeys(rdev,
4624                                         info->attrs[NL80211_ATTR_KEYS]);
4625                 if (IS_ERR(connkeys))
4626                         return PTR_ERR(connkeys);
4627         }
4628
4629         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4630         if (err)
4631                 kfree(connkeys);
4632         return err;
4633 }
4634
4635 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4636 {
4637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4638         struct net_device *dev = info->user_ptr[1];
4639
4640         if (!rdev->ops->leave_ibss)
4641                 return -EOPNOTSUPP;
4642
4643         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4644                 return -EOPNOTSUPP;
4645
4646         return cfg80211_leave_ibss(rdev, dev, false);
4647 }
4648
4649 #ifdef CONFIG_NL80211_TESTMODE
4650 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4651         .name = "testmode",
4652 };
4653
4654 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4655 {
4656         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4657         int err;
4658
4659         if (!info->attrs[NL80211_ATTR_TESTDATA])
4660                 return -EINVAL;
4661
4662         err = -EOPNOTSUPP;
4663         if (rdev->ops->testmode_cmd) {
4664                 rdev->testmode_info = info;
4665                 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4666                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4667                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4668                 rdev->testmode_info = NULL;
4669         }
4670
4671         return err;
4672 }
4673
4674 static int nl80211_testmode_dump(struct sk_buff *skb,
4675                                  struct netlink_callback *cb)
4676 {
4677         struct cfg80211_registered_device *dev;
4678         int err;
4679         long phy_idx;
4680         void *data = NULL;
4681         int data_len = 0;
4682
4683         if (cb->args[0]) {
4684                 /*
4685                  * 0 is a valid index, but not valid for args[0],
4686                  * so we need to offset by 1.
4687                  */
4688                 phy_idx = cb->args[0] - 1;
4689         } else {
4690                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4691                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
4692                                   nl80211_policy);
4693                 if (err)
4694                         return err;
4695                 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4696                         return -EINVAL;
4697                 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4698                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4699                         cb->args[1] =
4700                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4701         }
4702
4703         if (cb->args[1]) {
4704                 data = nla_data((void *)cb->args[1]);
4705                 data_len = nla_len((void *)cb->args[1]);
4706         }
4707
4708         mutex_lock(&cfg80211_mutex);
4709         dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4710         if (!dev) {
4711                 mutex_unlock(&cfg80211_mutex);
4712                 return -ENOENT;
4713         }
4714         cfg80211_lock_rdev(dev);
4715         mutex_unlock(&cfg80211_mutex);
4716
4717         if (!dev->ops->testmode_dump) {
4718                 err = -EOPNOTSUPP;
4719                 goto out_err;
4720         }
4721
4722         while (1) {
4723                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4724                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
4725                                            NL80211_CMD_TESTMODE);
4726                 struct nlattr *tmdata;
4727
4728                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4729                         genlmsg_cancel(skb, hdr);
4730                         break;
4731                 }
4732
4733                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4734                 if (!tmdata) {
4735                         genlmsg_cancel(skb, hdr);
4736                         break;
4737                 }
4738                 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4739                                               data, data_len);
4740                 nla_nest_end(skb, tmdata);
4741
4742                 if (err == -ENOBUFS || err == -ENOENT) {
4743                         genlmsg_cancel(skb, hdr);
4744                         break;
4745                 } else if (err) {
4746                         genlmsg_cancel(skb, hdr);
4747                         goto out_err;
4748                 }
4749
4750                 genlmsg_end(skb, hdr);
4751         }
4752
4753         err = skb->len;
4754         /* see above */
4755         cb->args[0] = phy_idx + 1;
4756  out_err:
4757         cfg80211_unlock_rdev(dev);
4758         return err;
4759 }
4760
4761 static struct sk_buff *
4762 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4763                               int approxlen, u32 pid, u32 seq, gfp_t gfp)
4764 {
4765         struct sk_buff *skb;
4766         void *hdr;
4767         struct nlattr *data;
4768
4769         skb = nlmsg_new(approxlen + 100, gfp);
4770         if (!skb)
4771                 return NULL;
4772
4773         hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4774         if (!hdr) {
4775                 kfree_skb(skb);
4776                 return NULL;
4777         }
4778
4779         NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4780         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4781
4782         ((void **)skb->cb)[0] = rdev;
4783         ((void **)skb->cb)[1] = hdr;
4784         ((void **)skb->cb)[2] = data;
4785
4786         return skb;
4787
4788  nla_put_failure:
4789         kfree_skb(skb);
4790         return NULL;
4791 }
4792
4793 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4794                                                   int approxlen)
4795 {
4796         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4797
4798         if (WARN_ON(!rdev->testmode_info))
4799                 return NULL;
4800
4801         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4802                                 rdev->testmode_info->snd_pid,
4803                                 rdev->testmode_info->snd_seq,
4804                                 GFP_KERNEL);
4805 }
4806 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4807
4808 int cfg80211_testmode_reply(struct sk_buff *skb)
4809 {
4810         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4811         void *hdr = ((void **)skb->cb)[1];
4812         struct nlattr *data = ((void **)skb->cb)[2];
4813
4814         /* clear CB data for netlink core to own from now on */
4815         memset(skb->cb, 0, sizeof(skb->cb));
4816
4817         if (WARN_ON(!rdev->testmode_info)) {
4818                 kfree_skb(skb);
4819                 return -EINVAL;
4820         }
4821
4822         nla_nest_end(skb, data);
4823         genlmsg_end(skb, hdr);
4824         return genlmsg_reply(skb, rdev->testmode_info);
4825 }
4826 EXPORT_SYMBOL(cfg80211_testmode_reply);
4827
4828 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4829                                                   int approxlen, gfp_t gfp)
4830 {
4831         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4832
4833         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4834 }
4835 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4836
4837 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4838 {
4839         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4840         void *hdr = ((void **)skb->cb)[1];
4841         struct nlattr *data = ((void **)skb->cb)[2];
4842
4843         /* clear CB data for netlink core to own from now on */
4844         memset(skb->cb, 0, sizeof(skb->cb));
4845
4846         nla_nest_end(skb, data);
4847         genlmsg_end(skb, hdr);
4848         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
4849                                 nl80211_testmode_mcgrp.id, gfp);
4850 }
4851 EXPORT_SYMBOL(cfg80211_testmode_event);
4852 #endif
4853
4854 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4855 {
4856         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4857         struct net_device *dev = info->user_ptr[1];
4858         struct cfg80211_connect_params connect;
4859         struct wiphy *wiphy;
4860         struct cfg80211_cached_keys *connkeys = NULL;
4861         int err;
4862
4863         memset(&connect, 0, sizeof(connect));
4864
4865         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4866                 return -EINVAL;
4867
4868         if (!info->attrs[NL80211_ATTR_SSID] ||
4869             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4870                 return -EINVAL;
4871
4872         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4873                 connect.auth_type =
4874                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4875                 if (!nl80211_valid_auth_type(connect.auth_type))
4876                         return -EINVAL;
4877         } else
4878                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4879
4880         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4881
4882         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4883                                       NL80211_MAX_NR_CIPHER_SUITES);
4884         if (err)
4885                 return err;
4886
4887         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4888             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4889                 return -EOPNOTSUPP;
4890
4891         wiphy = &rdev->wiphy;
4892
4893         if (info->attrs[NL80211_ATTR_MAC])
4894                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4895         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4896         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4897
4898         if (info->attrs[NL80211_ATTR_IE]) {
4899                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4900                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4901         }
4902
4903         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4904                 connect.channel =
4905                         ieee80211_get_channel(wiphy,
4906                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4907                 if (!connect.channel ||
4908                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
4909                         return -EINVAL;
4910         }
4911
4912         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4913                 connkeys = nl80211_parse_connkeys(rdev,
4914                                         info->attrs[NL80211_ATTR_KEYS]);
4915                 if (IS_ERR(connkeys))
4916                         return PTR_ERR(connkeys);
4917         }
4918
4919         err = cfg80211_connect(rdev, dev, &connect, connkeys);
4920         if (err)
4921                 kfree(connkeys);
4922         return err;
4923 }
4924
4925 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4926 {
4927         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4928         struct net_device *dev = info->user_ptr[1];
4929         u16 reason;
4930
4931         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4932                 reason = WLAN_REASON_DEAUTH_LEAVING;
4933         else
4934                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4935
4936         if (reason == 0)
4937                 return -EINVAL;
4938
4939         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4940             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4941                 return -EOPNOTSUPP;
4942
4943         return cfg80211_disconnect(rdev, dev, reason, true);
4944 }
4945
4946 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4947 {
4948         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4949         struct net *net;
4950         int err;
4951         u32 pid;
4952
4953         if (!info->attrs[NL80211_ATTR_PID])
4954                 return -EINVAL;
4955
4956         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4957
4958         net = get_net_ns_by_pid(pid);
4959         if (IS_ERR(net))
4960                 return PTR_ERR(net);
4961
4962         err = 0;
4963
4964         /* check if anything to do */
4965         if (!net_eq(wiphy_net(&rdev->wiphy), net))
4966                 err = cfg80211_switch_netns(rdev, net);
4967
4968         put_net(net);
4969         return err;
4970 }
4971
4972 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4973 {
4974         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4975         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4976                         struct cfg80211_pmksa *pmksa) = NULL;
4977         struct net_device *dev = info->user_ptr[1];
4978         struct cfg80211_pmksa pmksa;
4979
4980         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4981
4982         if (!info->attrs[NL80211_ATTR_MAC])
4983                 return -EINVAL;
4984
4985         if (!info->attrs[NL80211_ATTR_PMKID])
4986                 return -EINVAL;
4987
4988         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4989         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4990
4991         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4992             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4993                 return -EOPNOTSUPP;
4994
4995         switch (info->genlhdr->cmd) {
4996         case NL80211_CMD_SET_PMKSA:
4997                 rdev_ops = rdev->ops->set_pmksa;
4998                 break;
4999         case NL80211_CMD_DEL_PMKSA:
5000                 rdev_ops = rdev->ops->del_pmksa;
5001                 break;
5002         default:
5003                 WARN_ON(1);
5004                 break;
5005         }
5006
5007         if (!rdev_ops)
5008                 return -EOPNOTSUPP;
5009
5010         return rdev_ops(&rdev->wiphy, dev, &pmksa);
5011 }
5012
5013 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5014 {
5015         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5016         struct net_device *dev = info->user_ptr[1];
5017
5018         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5019             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5020                 return -EOPNOTSUPP;
5021
5022         if (!rdev->ops->flush_pmksa)
5023                 return -EOPNOTSUPP;
5024
5025         return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5026 }
5027
5028 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5029 {
5030         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5031         struct net_device *dev = info->user_ptr[1];
5032         u8 action_code, dialog_token;
5033         u16 status_code;
5034         u8 *peer;
5035
5036         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5037             !rdev->ops->tdls_mgmt)
5038                 return -EOPNOTSUPP;
5039
5040         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5041             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5042             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5043             !info->attrs[NL80211_ATTR_IE] ||
5044             !info->attrs[NL80211_ATTR_MAC])
5045                 return -EINVAL;
5046
5047         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5048         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5049         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5050         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5051
5052         return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5053                                     dialog_token, status_code,
5054                                     nla_data(info->attrs[NL80211_ATTR_IE]),
5055                                     nla_len(info->attrs[NL80211_ATTR_IE]));
5056 }
5057
5058 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5059 {
5060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5061         struct net_device *dev = info->user_ptr[1];
5062         enum nl80211_tdls_operation operation;
5063         u8 *peer;
5064
5065         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5066             !rdev->ops->tdls_oper)
5067                 return -EOPNOTSUPP;
5068
5069         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5070             !info->attrs[NL80211_ATTR_MAC])
5071                 return -EINVAL;
5072
5073         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5074         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5075
5076         return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5077 }
5078
5079 static int nl80211_remain_on_channel(struct sk_buff *skb,
5080                                      struct genl_info *info)
5081 {
5082         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5083         struct net_device *dev = info->user_ptr[1];
5084         struct ieee80211_channel *chan;
5085         struct sk_buff *msg;
5086         void *hdr;
5087         u64 cookie;
5088         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5089         u32 freq, duration;
5090         int err;
5091
5092         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5093             !info->attrs[NL80211_ATTR_DURATION])
5094                 return -EINVAL;
5095
5096         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5097
5098         /*
5099          * We should be on that channel for at least one jiffie,
5100          * and more than 5 seconds seems excessive.
5101          */
5102         if (!duration || !msecs_to_jiffies(duration) ||
5103             duration > rdev->wiphy.max_remain_on_channel_duration)
5104                 return -EINVAL;
5105
5106         if (!rdev->ops->remain_on_channel)
5107                 return -EOPNOTSUPP;
5108
5109         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5110                 channel_type = nla_get_u32(
5111                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5112                 if (channel_type != NL80211_CHAN_NO_HT &&
5113                     channel_type != NL80211_CHAN_HT20 &&
5114                     channel_type != NL80211_CHAN_HT40PLUS &&
5115                     channel_type != NL80211_CHAN_HT40MINUS)
5116                         return -EINVAL;
5117         }
5118
5119         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5120         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5121         if (chan == NULL)
5122                 return -EINVAL;
5123
5124         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5125         if (!msg)
5126                 return -ENOMEM;
5127
5128         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5129                              NL80211_CMD_REMAIN_ON_CHANNEL);
5130
5131         if (IS_ERR(hdr)) {
5132                 err = PTR_ERR(hdr);
5133                 goto free_msg;
5134         }
5135
5136         err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5137                                            channel_type, duration, &cookie);
5138
5139         if (err)
5140                 goto free_msg;
5141
5142         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5143
5144         genlmsg_end(msg, hdr);
5145
5146         return genlmsg_reply(msg, info);
5147
5148  nla_put_failure:
5149         err = -ENOBUFS;
5150  free_msg:
5151         nlmsg_free(msg);
5152         return err;
5153 }
5154
5155 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5156                                             struct genl_info *info)
5157 {
5158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5159         struct net_device *dev = info->user_ptr[1];
5160         u64 cookie;
5161
5162         if (!info->attrs[NL80211_ATTR_COOKIE])
5163                 return -EINVAL;
5164
5165         if (!rdev->ops->cancel_remain_on_channel)
5166                 return -EOPNOTSUPP;
5167
5168         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5169
5170         return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5171 }
5172
5173 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5174                            u8 *rates, u8 rates_len)
5175 {
5176         u8 i;
5177         u32 mask = 0;
5178
5179         for (i = 0; i < rates_len; i++) {
5180                 int rate = (rates[i] & 0x7f) * 5;
5181                 int ridx;
5182                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5183                         struct ieee80211_rate *srate =
5184                                 &sband->bitrates[ridx];
5185                         if (rate == srate->bitrate) {
5186                                 mask |= 1 << ridx;
5187                                 break;
5188                         }
5189                 }
5190                 if (ridx == sband->n_bitrates)
5191                         return 0; /* rate not found */
5192         }
5193
5194         return mask;
5195 }
5196
5197 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5198         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5199                                     .len = NL80211_MAX_SUPP_RATES },
5200 };
5201
5202 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5203                                        struct genl_info *info)
5204 {
5205         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5206         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5207         struct cfg80211_bitrate_mask mask;
5208         int rem, i;
5209         struct net_device *dev = info->user_ptr[1];
5210         struct nlattr *tx_rates;
5211         struct ieee80211_supported_band *sband;
5212
5213         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5214                 return -EINVAL;
5215
5216         if (!rdev->ops->set_bitrate_mask)
5217                 return -EOPNOTSUPP;
5218
5219         memset(&mask, 0, sizeof(mask));
5220         /* Default to all rates enabled */
5221         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5222                 sband = rdev->wiphy.bands[i];
5223                 mask.control[i].legacy =
5224                         sband ? (1 << sband->n_bitrates) - 1 : 0;
5225         }
5226
5227         /*
5228          * The nested attribute uses enum nl80211_band as the index. This maps
5229          * directly to the enum ieee80211_band values used in cfg80211.
5230          */
5231         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5232         {
5233                 enum ieee80211_band band = nla_type(tx_rates);
5234                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5235                         return -EINVAL;
5236                 sband = rdev->wiphy.bands[band];
5237                 if (sband == NULL)
5238                         return -EINVAL;
5239                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5240                           nla_len(tx_rates), nl80211_txattr_policy);
5241                 if (tb[NL80211_TXRATE_LEGACY]) {
5242                         mask.control[band].legacy = rateset_to_mask(
5243                                 sband,
5244                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5245                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5246                         if (mask.control[band].legacy == 0)
5247                                 return -EINVAL;
5248                 }
5249         }
5250
5251         return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5252 }
5253
5254 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5255 {
5256         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5257         struct net_device *dev = info->user_ptr[1];
5258         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5259
5260         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5261                 return -EINVAL;
5262
5263         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5264                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5265
5266         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5267             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5268             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5269             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5270             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5271             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5272             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5273                 return -EOPNOTSUPP;
5274
5275         /* not much point in registering if we can't reply */
5276         if (!rdev->ops->mgmt_tx)
5277                 return -EOPNOTSUPP;
5278
5279         return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5280                         frame_type,
5281                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5282                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5283 }
5284
5285 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5286 {
5287         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5288         struct net_device *dev = info->user_ptr[1];
5289         struct ieee80211_channel *chan;
5290         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5291         bool channel_type_valid = false;
5292         u32 freq;
5293         int err;
5294         void *hdr;
5295         u64 cookie;
5296         struct sk_buff *msg;
5297         unsigned int wait = 0;
5298         bool offchan;
5299         bool no_cck;
5300
5301         if (!info->attrs[NL80211_ATTR_FRAME] ||
5302             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5303                 return -EINVAL;
5304
5305         if (!rdev->ops->mgmt_tx)
5306                 return -EOPNOTSUPP;
5307
5308         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5309             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5310             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5311             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5312             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5313             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5314             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5315                 return -EOPNOTSUPP;
5316
5317         if (info->attrs[NL80211_ATTR_DURATION]) {
5318                 if (!rdev->ops->mgmt_tx_cancel_wait)
5319                         return -EINVAL;
5320                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5321         }
5322
5323         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5324                 channel_type = nla_get_u32(
5325                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5326                 if (channel_type != NL80211_CHAN_NO_HT &&
5327                     channel_type != NL80211_CHAN_HT20 &&
5328                     channel_type != NL80211_CHAN_HT40PLUS &&
5329                     channel_type != NL80211_CHAN_HT40MINUS)
5330                         return -EINVAL;
5331                 channel_type_valid = true;
5332         }
5333
5334         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5335
5336         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5337
5338         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5339         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5340         if (chan == NULL)
5341                 return -EINVAL;
5342
5343         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5344         if (!msg)
5345                 return -ENOMEM;
5346
5347         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5348                              NL80211_CMD_FRAME);
5349
5350         if (IS_ERR(hdr)) {
5351                 err = PTR_ERR(hdr);
5352                 goto free_msg;
5353         }
5354         err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5355                                     channel_type_valid, wait,
5356                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
5357                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
5358                                     no_cck, &cookie);
5359         if (err)
5360                 goto free_msg;
5361
5362         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5363
5364         genlmsg_end(msg, hdr);
5365         return genlmsg_reply(msg, info);
5366
5367  nla_put_failure:
5368         err = -ENOBUFS;
5369  free_msg:
5370         nlmsg_free(msg);
5371         return err;
5372 }
5373
5374 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5375 {
5376         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5377         struct net_device *dev = info->user_ptr[1];
5378         u64 cookie;
5379
5380         if (!info->attrs[NL80211_ATTR_COOKIE])
5381                 return -EINVAL;
5382
5383         if (!rdev->ops->mgmt_tx_cancel_wait)
5384                 return -EOPNOTSUPP;
5385
5386         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5387             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5388             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5389             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5390             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5391             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5392                 return -EOPNOTSUPP;
5393
5394         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5395
5396         return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5397 }
5398
5399 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5400 {
5401         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5402         struct wireless_dev *wdev;
5403         struct net_device *dev = info->user_ptr[1];
5404         u8 ps_state;
5405         bool state;
5406         int err;
5407
5408         if (!info->attrs[NL80211_ATTR_PS_STATE])
5409                 return -EINVAL;
5410
5411         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5412
5413         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5414                 return -EINVAL;
5415
5416         wdev = dev->ieee80211_ptr;
5417
5418         if (!rdev->ops->set_power_mgmt)
5419                 return -EOPNOTSUPP;
5420
5421         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5422
5423         if (state == wdev->ps)
5424                 return 0;
5425
5426         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5427                                         wdev->ps_timeout);
5428         if (!err)
5429                 wdev->ps = state;
5430         return err;
5431 }
5432
5433 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5434 {
5435         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5436         enum nl80211_ps_state ps_state;
5437         struct wireless_dev *wdev;
5438         struct net_device *dev = info->user_ptr[1];
5439         struct sk_buff *msg;
5440         void *hdr;
5441         int err;
5442
5443         wdev = dev->ieee80211_ptr;
5444
5445         if (!rdev->ops->set_power_mgmt)
5446                 return -EOPNOTSUPP;
5447
5448         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5449         if (!msg)
5450                 return -ENOMEM;
5451
5452         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5453                              NL80211_CMD_GET_POWER_SAVE);
5454         if (!hdr) {
5455                 err = -ENOBUFS;
5456                 goto free_msg;
5457         }
5458
5459         if (wdev->ps)
5460                 ps_state = NL80211_PS_ENABLED;
5461         else
5462                 ps_state = NL80211_PS_DISABLED;
5463
5464         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5465
5466         genlmsg_end(msg, hdr);
5467         return genlmsg_reply(msg, info);
5468
5469  nla_put_failure:
5470         err = -ENOBUFS;
5471  free_msg:
5472         nlmsg_free(msg);
5473         return err;
5474 }
5475
5476 static struct nla_policy
5477 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5478         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5479         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5480         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5481 };
5482
5483 static int nl80211_set_cqm_rssi(struct genl_info *info,
5484                                 s32 threshold, u32 hysteresis)
5485 {
5486         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5487         struct wireless_dev *wdev;
5488         struct net_device *dev = info->user_ptr[1];
5489
5490         if (threshold > 0)
5491                 return -EINVAL;
5492
5493         wdev = dev->ieee80211_ptr;
5494
5495         if (!rdev->ops->set_cqm_rssi_config)
5496                 return -EOPNOTSUPP;
5497
5498         if (wdev->iftype != NL80211_IFTYPE_STATION &&
5499             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5500                 return -EOPNOTSUPP;
5501
5502         return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5503                                               threshold, hysteresis);
5504 }
5505
5506 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5507 {
5508         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5509         struct nlattr *cqm;
5510         int err;
5511
5512         cqm = info->attrs[NL80211_ATTR_CQM];
5513         if (!cqm) {
5514                 err = -EINVAL;
5515                 goto out;
5516         }
5517
5518         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5519                                nl80211_attr_cqm_policy);
5520         if (err)
5521                 goto out;
5522
5523         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5524             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5525                 s32 threshold;
5526                 u32 hysteresis;
5527                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5528                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5529                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5530         } else
5531                 err = -EINVAL;
5532
5533 out:
5534         return err;
5535 }
5536
5537 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5538 {
5539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5540         struct net_device *dev = info->user_ptr[1];
5541         struct mesh_config cfg;
5542         struct mesh_setup setup;
5543         int err;
5544
5545         /* start with default */
5546         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5547         memcpy(&setup, &default_mesh_setup, sizeof(setup));
5548
5549         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5550                 /* and parse parameters if given */
5551                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5552                 if (err)
5553                         return err;
5554         }
5555
5556         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5557             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5558                 return -EINVAL;
5559
5560         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5561         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5562
5563         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5564                 /* parse additional setup parameters if given */
5565                 err = nl80211_parse_mesh_setup(info, &setup);
5566                 if (err)
5567                         return err;
5568         }
5569
5570         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5571 }
5572
5573 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5574 {
5575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5576         struct net_device *dev = info->user_ptr[1];
5577
5578         return cfg80211_leave_mesh(rdev, dev);
5579 }
5580
5581 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5582 {
5583         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5584         struct sk_buff *msg;
5585         void *hdr;
5586
5587         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5588                 return -EOPNOTSUPP;
5589
5590         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5591         if (!msg)
5592                 return -ENOMEM;
5593
5594         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5595                              NL80211_CMD_GET_WOWLAN);
5596         if (!hdr)
5597                 goto nla_put_failure;
5598
5599         if (rdev->wowlan) {
5600                 struct nlattr *nl_wowlan;
5601
5602                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5603                 if (!nl_wowlan)
5604                         goto nla_put_failure;
5605
5606                 if (rdev->wowlan->any)
5607                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5608                 if (rdev->wowlan->disconnect)
5609                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5610                 if (rdev->wowlan->magic_pkt)
5611                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5612                 if (rdev->wowlan->gtk_rekey_failure)
5613                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5614                 if (rdev->wowlan->eap_identity_req)
5615                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5616                 if (rdev->wowlan->four_way_handshake)
5617                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5618                 if (rdev->wowlan->rfkill_release)
5619                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5620                 if (rdev->wowlan->n_patterns) {
5621                         struct nlattr *nl_pats, *nl_pat;
5622                         int i, pat_len;
5623
5624                         nl_pats = nla_nest_start(msg,
5625                                         NL80211_WOWLAN_TRIG_PKT_PATTERN);
5626                         if (!nl_pats)
5627                                 goto nla_put_failure;
5628
5629                         for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5630                                 nl_pat = nla_nest_start(msg, i + 1);
5631                                 if (!nl_pat)
5632                                         goto nla_put_failure;
5633                                 pat_len = rdev->wowlan->patterns[i].pattern_len;
5634                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5635                                         DIV_ROUND_UP(pat_len, 8),
5636                                         rdev->wowlan->patterns[i].mask);
5637                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5638                                         pat_len,
5639                                         rdev->wowlan->patterns[i].pattern);
5640                                 nla_nest_end(msg, nl_pat);
5641                         }
5642                         nla_nest_end(msg, nl_pats);
5643                 }
5644
5645                 nla_nest_end(msg, nl_wowlan);
5646         }
5647
5648         genlmsg_end(msg, hdr);
5649         return genlmsg_reply(msg, info);
5650
5651 nla_put_failure:
5652         nlmsg_free(msg);
5653         return -ENOBUFS;
5654 }
5655
5656 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5657 {
5658         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5659         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5660         struct cfg80211_wowlan no_triggers = {};
5661         struct cfg80211_wowlan new_triggers = {};
5662         struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5663         int err, i;
5664
5665         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5666                 return -EOPNOTSUPP;
5667
5668         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5669                 goto no_triggers;
5670
5671         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5672                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5673                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5674                         nl80211_wowlan_policy);
5675         if (err)
5676                 return err;
5677
5678         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5679                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5680                         return -EINVAL;
5681                 new_triggers.any = true;
5682         }
5683
5684         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5685                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5686                         return -EINVAL;
5687                 new_triggers.disconnect = true;
5688         }
5689
5690         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5691                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5692                         return -EINVAL;
5693                 new_triggers.magic_pkt = true;
5694         }
5695
5696         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5697                 return -EINVAL;
5698
5699         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5700                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5701                         return -EINVAL;
5702                 new_triggers.gtk_rekey_failure = true;
5703         }
5704
5705         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5706                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5707                         return -EINVAL;
5708                 new_triggers.eap_identity_req = true;
5709         }
5710
5711         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5712                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5713                         return -EINVAL;
5714                 new_triggers.four_way_handshake = true;
5715         }
5716
5717         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5718                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5719                         return -EINVAL;
5720                 new_triggers.rfkill_release = true;
5721         }
5722
5723         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5724                 struct nlattr *pat;
5725                 int n_patterns = 0;
5726                 int rem, pat_len, mask_len;
5727                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5728
5729                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5730                                     rem)
5731                         n_patterns++;
5732                 if (n_patterns > wowlan->n_patterns)
5733                         return -EINVAL;
5734
5735                 new_triggers.patterns = kcalloc(n_patterns,
5736                                                 sizeof(new_triggers.patterns[0]),
5737                                                 GFP_KERNEL);
5738                 if (!new_triggers.patterns)
5739                         return -ENOMEM;
5740
5741                 new_triggers.n_patterns = n_patterns;
5742                 i = 0;
5743
5744                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5745                                     rem) {
5746                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5747                                   nla_data(pat), nla_len(pat), NULL);
5748                         err = -EINVAL;
5749                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5750                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5751                                 goto error;
5752                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5753                         mask_len = DIV_ROUND_UP(pat_len, 8);
5754                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5755                             mask_len)
5756                                 goto error;
5757                         if (pat_len > wowlan->pattern_max_len ||
5758                             pat_len < wowlan->pattern_min_len)
5759                                 goto error;
5760
5761                         new_triggers.patterns[i].mask =
5762                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
5763                         if (!new_triggers.patterns[i].mask) {
5764                                 err = -ENOMEM;
5765                                 goto error;
5766                         }
5767                         new_triggers.patterns[i].pattern =
5768                                 new_triggers.patterns[i].mask + mask_len;
5769                         memcpy(new_triggers.patterns[i].mask,
5770                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5771                                mask_len);
5772                         new_triggers.patterns[i].pattern_len = pat_len;
5773                         memcpy(new_triggers.patterns[i].pattern,
5774                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5775                                pat_len);
5776                         i++;
5777                 }
5778         }
5779
5780         if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5781                 struct cfg80211_wowlan *ntrig;
5782                 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5783                                 GFP_KERNEL);
5784                 if (!ntrig) {
5785                         err = -ENOMEM;
5786                         goto error;
5787                 }
5788                 cfg80211_rdev_free_wowlan(rdev);
5789                 rdev->wowlan = ntrig;
5790         } else {
5791  no_triggers:
5792                 cfg80211_rdev_free_wowlan(rdev);
5793                 rdev->wowlan = NULL;
5794         }
5795
5796         return 0;
5797  error:
5798         for (i = 0; i < new_triggers.n_patterns; i++)
5799                 kfree(new_triggers.patterns[i].mask);
5800         kfree(new_triggers.patterns);
5801         return err;
5802 }
5803
5804 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5805 {
5806         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5807         struct net_device *dev = info->user_ptr[1];
5808         struct wireless_dev *wdev = dev->ieee80211_ptr;
5809         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5810         struct cfg80211_gtk_rekey_data rekey_data;
5811         int err;
5812
5813         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5814                 return -EINVAL;
5815
5816         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5817                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5818                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5819                         nl80211_rekey_policy);
5820         if (err)
5821                 return err;
5822
5823         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5824                 return -ERANGE;
5825         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5826                 return -ERANGE;
5827         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5828                 return -ERANGE;
5829
5830         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5831                NL80211_KEK_LEN);
5832         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5833                NL80211_KCK_LEN);
5834         memcpy(rekey_data.replay_ctr,
5835                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5836                NL80211_REPLAY_CTR_LEN);
5837
5838         wdev_lock(wdev);
5839         if (!wdev->current_bss) {
5840                 err = -ENOTCONN;
5841                 goto out;
5842         }
5843
5844         if (!rdev->ops->set_rekey_data) {
5845                 err = -EOPNOTSUPP;
5846                 goto out;
5847         }
5848
5849         err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5850  out:
5851         wdev_unlock(wdev);
5852         return err;
5853 }
5854
5855 #define NL80211_FLAG_NEED_WIPHY         0x01
5856 #define NL80211_FLAG_NEED_NETDEV        0x02
5857 #define NL80211_FLAG_NEED_RTNL          0x04
5858 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
5859 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
5860                                          NL80211_FLAG_CHECK_NETDEV_UP)
5861
5862 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5863                             struct genl_info *info)
5864 {
5865         struct cfg80211_registered_device *rdev;
5866         struct net_device *dev;
5867         int err;
5868         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5869
5870         if (rtnl)
5871                 rtnl_lock();
5872
5873         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5874                 rdev = cfg80211_get_dev_from_info(info);
5875                 if (IS_ERR(rdev)) {
5876                         if (rtnl)
5877                                 rtnl_unlock();
5878                         return PTR_ERR(rdev);
5879                 }
5880                 info->user_ptr[0] = rdev;
5881         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5882                 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5883                 if (err) {
5884                         if (rtnl)
5885                                 rtnl_unlock();
5886                         return err;
5887                 }
5888                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5889                     !netif_running(dev)) {
5890                         cfg80211_unlock_rdev(rdev);
5891                         dev_put(dev);
5892                         if (rtnl)
5893                                 rtnl_unlock();
5894                         return -ENETDOWN;
5895                 }
5896                 info->user_ptr[0] = rdev;
5897                 info->user_ptr[1] = dev;
5898         }
5899
5900         return 0;
5901 }
5902
5903 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5904                               struct genl_info *info)
5905 {
5906         if (info->user_ptr[0])
5907                 cfg80211_unlock_rdev(info->user_ptr[0]);
5908         if (info->user_ptr[1])
5909                 dev_put(info->user_ptr[1]);
5910         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5911                 rtnl_unlock();
5912 }
5913
5914 static struct genl_ops nl80211_ops[] = {
5915         {
5916                 .cmd = NL80211_CMD_GET_WIPHY,
5917                 .doit = nl80211_get_wiphy,
5918                 .dumpit = nl80211_dump_wiphy,
5919                 .policy = nl80211_policy,
5920                 /* can be retrieved by unprivileged users */
5921                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5922         },
5923         {
5924                 .cmd = NL80211_CMD_SET_WIPHY,
5925                 .doit = nl80211_set_wiphy,
5926                 .policy = nl80211_policy,
5927                 .flags = GENL_ADMIN_PERM,
5928                 .internal_flags = NL80211_FLAG_NEED_RTNL,
5929         },
5930         {
5931                 .cmd = NL80211_CMD_GET_INTERFACE,
5932                 .doit = nl80211_get_interface,
5933                 .dumpit = nl80211_dump_interface,
5934                 .policy = nl80211_policy,
5935                 /* can be retrieved by unprivileged users */
5936                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5937         },
5938         {
5939                 .cmd = NL80211_CMD_SET_INTERFACE,
5940                 .doit = nl80211_set_interface,
5941                 .policy = nl80211_policy,
5942                 .flags = GENL_ADMIN_PERM,
5943                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5944                                   NL80211_FLAG_NEED_RTNL,
5945         },
5946         {
5947                 .cmd = NL80211_CMD_NEW_INTERFACE,
5948                 .doit = nl80211_new_interface,
5949                 .policy = nl80211_policy,
5950                 .flags = GENL_ADMIN_PERM,
5951                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5952                                   NL80211_FLAG_NEED_RTNL,
5953         },
5954         {
5955                 .cmd = NL80211_CMD_DEL_INTERFACE,
5956                 .doit = nl80211_del_interface,
5957                 .policy = nl80211_policy,
5958                 .flags = GENL_ADMIN_PERM,
5959                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5960                                   NL80211_FLAG_NEED_RTNL,
5961         },
5962         {
5963                 .cmd = NL80211_CMD_GET_KEY,
5964                 .doit = nl80211_get_key,
5965                 .policy = nl80211_policy,
5966                 .flags = GENL_ADMIN_PERM,
5967                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5968                                   NL80211_FLAG_NEED_RTNL,
5969         },
5970         {
5971                 .cmd = NL80211_CMD_SET_KEY,
5972                 .doit = nl80211_set_key,
5973                 .policy = nl80211_policy,
5974                 .flags = GENL_ADMIN_PERM,
5975                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5976                                   NL80211_FLAG_NEED_RTNL,
5977         },
5978         {
5979                 .cmd = NL80211_CMD_NEW_KEY,
5980                 .doit = nl80211_new_key,
5981                 .policy = nl80211_policy,
5982                 .flags = GENL_ADMIN_PERM,
5983                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5984                                   NL80211_FLAG_NEED_RTNL,
5985         },
5986         {
5987                 .cmd = NL80211_CMD_DEL_KEY,
5988                 .doit = nl80211_del_key,
5989                 .policy = nl80211_policy,
5990                 .flags = GENL_ADMIN_PERM,
5991                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5992                                   NL80211_FLAG_NEED_RTNL,
5993         },
5994         {
5995                 .cmd = NL80211_CMD_SET_BEACON,
5996                 .policy = nl80211_policy,
5997                 .flags = GENL_ADMIN_PERM,
5998                 .doit = nl80211_addset_beacon,
5999                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6000                                   NL80211_FLAG_NEED_RTNL,
6001         },
6002         {
6003                 .cmd = NL80211_CMD_NEW_BEACON,
6004                 .policy = nl80211_policy,
6005                 .flags = GENL_ADMIN_PERM,
6006                 .doit = nl80211_addset_beacon,
6007                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6008                                   NL80211_FLAG_NEED_RTNL,
6009         },
6010         {
6011                 .cmd = NL80211_CMD_DEL_BEACON,
6012                 .policy = nl80211_policy,
6013                 .flags = GENL_ADMIN_PERM,
6014                 .doit = nl80211_del_beacon,
6015                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6016                                   NL80211_FLAG_NEED_RTNL,
6017         },
6018         {
6019                 .cmd = NL80211_CMD_GET_STATION,
6020                 .doit = nl80211_get_station,
6021                 .dumpit = nl80211_dump_station,
6022                 .policy = nl80211_policy,
6023                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6024                                   NL80211_FLAG_NEED_RTNL,
6025         },
6026         {
6027                 .cmd = NL80211_CMD_SET_STATION,
6028                 .doit = nl80211_set_station,
6029                 .policy = nl80211_policy,
6030                 .flags = GENL_ADMIN_PERM,
6031                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6032                                   NL80211_FLAG_NEED_RTNL,
6033         },
6034         {
6035                 .cmd = NL80211_CMD_NEW_STATION,
6036                 .doit = nl80211_new_station,
6037                 .policy = nl80211_policy,
6038                 .flags = GENL_ADMIN_PERM,
6039                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6040                                   NL80211_FLAG_NEED_RTNL,
6041         },
6042         {
6043                 .cmd = NL80211_CMD_DEL_STATION,
6044                 .doit = nl80211_del_station,
6045                 .policy = nl80211_policy,
6046                 .flags = GENL_ADMIN_PERM,
6047                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6048                                   NL80211_FLAG_NEED_RTNL,
6049         },
6050         {
6051                 .cmd = NL80211_CMD_GET_MPATH,
6052                 .doit = nl80211_get_mpath,
6053                 .dumpit = nl80211_dump_mpath,
6054                 .policy = nl80211_policy,
6055                 .flags = GENL_ADMIN_PERM,
6056                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6057                                   NL80211_FLAG_NEED_RTNL,
6058         },
6059         {
6060                 .cmd = NL80211_CMD_SET_MPATH,
6061                 .doit = nl80211_set_mpath,
6062                 .policy = nl80211_policy,
6063                 .flags = GENL_ADMIN_PERM,
6064                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6065                                   NL80211_FLAG_NEED_RTNL,
6066         },
6067         {
6068                 .cmd = NL80211_CMD_NEW_MPATH,
6069                 .doit = nl80211_new_mpath,
6070                 .policy = nl80211_policy,
6071                 .flags = GENL_ADMIN_PERM,
6072                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6073                                   NL80211_FLAG_NEED_RTNL,
6074         },
6075         {
6076                 .cmd = NL80211_CMD_DEL_MPATH,
6077                 .doit = nl80211_del_mpath,
6078                 .policy = nl80211_policy,
6079                 .flags = GENL_ADMIN_PERM,
6080                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6081                                   NL80211_FLAG_NEED_RTNL,
6082         },
6083         {
6084                 .cmd = NL80211_CMD_SET_BSS,
6085                 .doit = nl80211_set_bss,
6086                 .policy = nl80211_policy,
6087                 .flags = GENL_ADMIN_PERM,
6088                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6089                                   NL80211_FLAG_NEED_RTNL,
6090         },
6091         {
6092                 .cmd = NL80211_CMD_GET_REG,
6093                 .doit = nl80211_get_reg,
6094                 .policy = nl80211_policy,
6095                 /* can be retrieved by unprivileged users */
6096         },
6097         {
6098                 .cmd = NL80211_CMD_SET_REG,
6099                 .doit = nl80211_set_reg,
6100                 .policy = nl80211_policy,
6101                 .flags = GENL_ADMIN_PERM,
6102         },
6103         {
6104                 .cmd = NL80211_CMD_REQ_SET_REG,
6105                 .doit = nl80211_req_set_reg,
6106                 .policy = nl80211_policy,
6107                 .flags = GENL_ADMIN_PERM,
6108         },
6109         {
6110                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6111                 .doit = nl80211_get_mesh_config,
6112                 .policy = nl80211_policy,
6113                 /* can be retrieved by unprivileged users */
6114                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6115                                   NL80211_FLAG_NEED_RTNL,
6116         },
6117         {
6118                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6119                 .doit = nl80211_update_mesh_config,
6120                 .policy = nl80211_policy,
6121                 .flags = GENL_ADMIN_PERM,
6122                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6123                                   NL80211_FLAG_NEED_RTNL,
6124         },
6125         {
6126                 .cmd = NL80211_CMD_TRIGGER_SCAN,
6127                 .doit = nl80211_trigger_scan,
6128                 .policy = nl80211_policy,
6129                 .flags = GENL_ADMIN_PERM,
6130                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6131                                   NL80211_FLAG_NEED_RTNL,
6132         },
6133         {
6134                 .cmd = NL80211_CMD_GET_SCAN,
6135                 .policy = nl80211_policy,
6136                 .dumpit = nl80211_dump_scan,
6137         },
6138         {
6139                 .cmd = NL80211_CMD_START_SCHED_SCAN,
6140                 .doit = nl80211_start_sched_scan,
6141                 .policy = nl80211_policy,
6142                 .flags = GENL_ADMIN_PERM,
6143                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6144                                   NL80211_FLAG_NEED_RTNL,
6145         },
6146         {
6147                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6148                 .doit = nl80211_stop_sched_scan,
6149                 .policy = nl80211_policy,
6150                 .flags = GENL_ADMIN_PERM,
6151                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6152                                   NL80211_FLAG_NEED_RTNL,
6153         },
6154         {
6155                 .cmd = NL80211_CMD_AUTHENTICATE,
6156                 .doit = nl80211_authenticate,
6157                 .policy = nl80211_policy,
6158                 .flags = GENL_ADMIN_PERM,
6159                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6160                                   NL80211_FLAG_NEED_RTNL,
6161         },
6162         {
6163                 .cmd = NL80211_CMD_ASSOCIATE,
6164                 .doit = nl80211_associate,
6165                 .policy = nl80211_policy,
6166                 .flags = GENL_ADMIN_PERM,
6167                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6168                                   NL80211_FLAG_NEED_RTNL,
6169         },
6170         {
6171                 .cmd = NL80211_CMD_DEAUTHENTICATE,
6172                 .doit = nl80211_deauthenticate,
6173                 .policy = nl80211_policy,
6174                 .flags = GENL_ADMIN_PERM,
6175                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6176                                   NL80211_FLAG_NEED_RTNL,
6177         },
6178         {
6179                 .cmd = NL80211_CMD_DISASSOCIATE,
6180                 .doit = nl80211_disassociate,
6181                 .policy = nl80211_policy,
6182                 .flags = GENL_ADMIN_PERM,
6183                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6184                                   NL80211_FLAG_NEED_RTNL,
6185         },
6186         {
6187                 .cmd = NL80211_CMD_JOIN_IBSS,
6188                 .doit = nl80211_join_ibss,
6189                 .policy = nl80211_policy,
6190                 .flags = GENL_ADMIN_PERM,
6191                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6192                                   NL80211_FLAG_NEED_RTNL,
6193         },
6194         {
6195                 .cmd = NL80211_CMD_LEAVE_IBSS,
6196                 .doit = nl80211_leave_ibss,
6197                 .policy = nl80211_policy,
6198                 .flags = GENL_ADMIN_PERM,
6199                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6200                                   NL80211_FLAG_NEED_RTNL,
6201         },
6202 #ifdef CONFIG_NL80211_TESTMODE
6203         {
6204                 .cmd = NL80211_CMD_TESTMODE,
6205                 .doit = nl80211_testmode_do,
6206                 .dumpit = nl80211_testmode_dump,
6207                 .policy = nl80211_policy,
6208                 .flags = GENL_ADMIN_PERM,
6209                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6210                                   NL80211_FLAG_NEED_RTNL,
6211         },
6212 #endif
6213         {
6214                 .cmd = NL80211_CMD_CONNECT,
6215                 .doit = nl80211_connect,
6216                 .policy = nl80211_policy,
6217                 .flags = GENL_ADMIN_PERM,
6218                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6219                                   NL80211_FLAG_NEED_RTNL,
6220         },
6221         {
6222                 .cmd = NL80211_CMD_DISCONNECT,
6223                 .doit = nl80211_disconnect,
6224                 .policy = nl80211_policy,
6225                 .flags = GENL_ADMIN_PERM,
6226                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6227                                   NL80211_FLAG_NEED_RTNL,
6228         },
6229         {
6230                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6231                 .doit = nl80211_wiphy_netns,
6232                 .policy = nl80211_policy,
6233                 .flags = GENL_ADMIN_PERM,
6234                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6235                                   NL80211_FLAG_NEED_RTNL,
6236         },
6237         {
6238                 .cmd = NL80211_CMD_GET_SURVEY,
6239                 .policy = nl80211_policy,
6240                 .dumpit = nl80211_dump_survey,
6241         },
6242         {
6243                 .cmd = NL80211_CMD_SET_PMKSA,
6244                 .doit = nl80211_setdel_pmksa,
6245                 .policy = nl80211_policy,
6246                 .flags = GENL_ADMIN_PERM,
6247                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6248                                   NL80211_FLAG_NEED_RTNL,
6249         },
6250         {
6251                 .cmd = NL80211_CMD_DEL_PMKSA,
6252                 .doit = nl80211_setdel_pmksa,
6253                 .policy = nl80211_policy,
6254                 .flags = GENL_ADMIN_PERM,
6255                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6256                                   NL80211_FLAG_NEED_RTNL,
6257         },
6258         {
6259                 .cmd = NL80211_CMD_FLUSH_PMKSA,
6260                 .doit = nl80211_flush_pmksa,
6261                 .policy = nl80211_policy,
6262                 .flags = GENL_ADMIN_PERM,
6263                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6264                                   NL80211_FLAG_NEED_RTNL,
6265         },
6266         {
6267                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6268                 .doit = nl80211_remain_on_channel,
6269                 .policy = nl80211_policy,
6270                 .flags = GENL_ADMIN_PERM,
6271                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6272                                   NL80211_FLAG_NEED_RTNL,
6273         },
6274         {
6275                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6276                 .doit = nl80211_cancel_remain_on_channel,
6277                 .policy = nl80211_policy,
6278                 .flags = GENL_ADMIN_PERM,
6279                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6280                                   NL80211_FLAG_NEED_RTNL,
6281         },
6282         {
6283                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6284                 .doit = nl80211_set_tx_bitrate_mask,
6285                 .policy = nl80211_policy,
6286                 .flags = GENL_ADMIN_PERM,
6287                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6288                                   NL80211_FLAG_NEED_RTNL,
6289         },
6290         {
6291                 .cmd = NL80211_CMD_REGISTER_FRAME,
6292                 .doit = nl80211_register_mgmt,
6293                 .policy = nl80211_policy,
6294                 .flags = GENL_ADMIN_PERM,
6295                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6296                                   NL80211_FLAG_NEED_RTNL,
6297         },
6298         {
6299                 .cmd = NL80211_CMD_FRAME,
6300                 .doit = nl80211_tx_mgmt,
6301                 .policy = nl80211_policy,
6302                 .flags = GENL_ADMIN_PERM,
6303                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6304                                   NL80211_FLAG_NEED_RTNL,
6305         },
6306         {
6307                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6308                 .doit = nl80211_tx_mgmt_cancel_wait,
6309                 .policy = nl80211_policy,
6310                 .flags = GENL_ADMIN_PERM,
6311                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6312                                   NL80211_FLAG_NEED_RTNL,
6313         },
6314         {
6315                 .cmd = NL80211_CMD_SET_POWER_SAVE,
6316                 .doit = nl80211_set_power_save,
6317                 .policy = nl80211_policy,
6318                 .flags = GENL_ADMIN_PERM,
6319                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6320                                   NL80211_FLAG_NEED_RTNL,
6321         },
6322         {
6323                 .cmd = NL80211_CMD_GET_POWER_SAVE,
6324                 .doit = nl80211_get_power_save,
6325                 .policy = nl80211_policy,
6326                 /* can be retrieved by unprivileged users */
6327                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6328                                   NL80211_FLAG_NEED_RTNL,
6329         },
6330         {
6331                 .cmd = NL80211_CMD_SET_CQM,
6332                 .doit = nl80211_set_cqm,
6333                 .policy = nl80211_policy,
6334                 .flags = GENL_ADMIN_PERM,
6335                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6336                                   NL80211_FLAG_NEED_RTNL,
6337         },
6338         {
6339                 .cmd = NL80211_CMD_SET_CHANNEL,
6340                 .doit = nl80211_set_channel,
6341                 .policy = nl80211_policy,
6342                 .flags = GENL_ADMIN_PERM,
6343                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6344                                   NL80211_FLAG_NEED_RTNL,
6345         },
6346         {
6347                 .cmd = NL80211_CMD_SET_WDS_PEER,
6348                 .doit = nl80211_set_wds_peer,
6349                 .policy = nl80211_policy,
6350                 .flags = GENL_ADMIN_PERM,
6351                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6352                                   NL80211_FLAG_NEED_RTNL,
6353         },
6354         {
6355                 .cmd = NL80211_CMD_JOIN_MESH,
6356                 .doit = nl80211_join_mesh,
6357                 .policy = nl80211_policy,
6358                 .flags = GENL_ADMIN_PERM,
6359                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6360                                   NL80211_FLAG_NEED_RTNL,
6361         },
6362         {
6363                 .cmd = NL80211_CMD_LEAVE_MESH,
6364                 .doit = nl80211_leave_mesh,
6365                 .policy = nl80211_policy,
6366                 .flags = GENL_ADMIN_PERM,
6367                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6368                                   NL80211_FLAG_NEED_RTNL,
6369         },
6370         {
6371                 .cmd = NL80211_CMD_GET_WOWLAN,
6372                 .doit = nl80211_get_wowlan,
6373                 .policy = nl80211_policy,
6374                 /* can be retrieved by unprivileged users */
6375                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6376                                   NL80211_FLAG_NEED_RTNL,
6377         },
6378         {
6379                 .cmd = NL80211_CMD_SET_WOWLAN,
6380                 .doit = nl80211_set_wowlan,
6381                 .policy = nl80211_policy,
6382                 .flags = GENL_ADMIN_PERM,
6383                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6384                                   NL80211_FLAG_NEED_RTNL,
6385         },
6386         {
6387                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6388                 .doit = nl80211_set_rekey_data,
6389                 .policy = nl80211_policy,
6390                 .flags = GENL_ADMIN_PERM,
6391                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6392                                   NL80211_FLAG_NEED_RTNL,
6393         },
6394         {
6395                 .cmd = NL80211_CMD_TDLS_MGMT,
6396                 .doit = nl80211_tdls_mgmt,
6397                 .policy = nl80211_policy,
6398                 .flags = GENL_ADMIN_PERM,
6399                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6400                                   NL80211_FLAG_NEED_RTNL,
6401         },
6402         {
6403                 .cmd = NL80211_CMD_TDLS_OPER,
6404                 .doit = nl80211_tdls_oper,
6405                 .policy = nl80211_policy,
6406                 .flags = GENL_ADMIN_PERM,
6407                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6408                                   NL80211_FLAG_NEED_RTNL,
6409         },
6410 };
6411
6412 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6413         .name = "mlme",
6414 };
6415
6416 /* multicast groups */
6417 static struct genl_multicast_group nl80211_config_mcgrp = {
6418         .name = "config",
6419 };
6420 static struct genl_multicast_group nl80211_scan_mcgrp = {
6421         .name = "scan",
6422 };
6423 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6424         .name = "regulatory",
6425 };
6426
6427 /* notification functions */
6428
6429 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6430 {
6431         struct sk_buff *msg;
6432
6433         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6434         if (!msg)
6435                 return;
6436
6437         if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6438                 nlmsg_free(msg);
6439                 return;
6440         }
6441
6442         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6443                                 nl80211_config_mcgrp.id, GFP_KERNEL);
6444 }
6445
6446 static int nl80211_add_scan_req(struct sk_buff *msg,
6447                                 struct cfg80211_registered_device *rdev)
6448 {
6449         struct cfg80211_scan_request *req = rdev->scan_req;
6450         struct nlattr *nest;
6451         int i;
6452
6453         ASSERT_RDEV_LOCK(rdev);
6454
6455         if (WARN_ON(!req))
6456                 return 0;
6457
6458         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6459         if (!nest)
6460                 goto nla_put_failure;
6461         for (i = 0; i < req->n_ssids; i++)
6462                 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6463         nla_nest_end(msg, nest);
6464
6465         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6466         if (!nest)
6467                 goto nla_put_failure;
6468         for (i = 0; i < req->n_channels; i++)
6469                 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6470         nla_nest_end(msg, nest);
6471
6472         if (req->ie)
6473                 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6474
6475         return 0;
6476  nla_put_failure:
6477         return -ENOBUFS;
6478 }
6479
6480 static int nl80211_send_scan_msg(struct sk_buff *msg,
6481                                  struct cfg80211_registered_device *rdev,
6482                                  struct net_device *netdev,
6483                                  u32 pid, u32 seq, int flags,
6484                                  u32 cmd)
6485 {
6486         void *hdr;
6487
6488         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6489         if (!hdr)
6490                 return -1;
6491
6492         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6493         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6494
6495         /* ignore errors and send incomplete event anyway */
6496         nl80211_add_scan_req(msg, rdev);
6497
6498         return genlmsg_end(msg, hdr);
6499
6500  nla_put_failure:
6501         genlmsg_cancel(msg, hdr);
6502         return -EMSGSIZE;
6503 }
6504
6505 static int
6506 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6507                             struct cfg80211_registered_device *rdev,
6508                             struct net_device *netdev,
6509                             u32 pid, u32 seq, int flags, u32 cmd)
6510 {
6511         void *hdr;
6512
6513         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6514         if (!hdr)
6515                 return -1;
6516
6517         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6518         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6519
6520         return genlmsg_end(msg, hdr);
6521
6522  nla_put_failure:
6523         genlmsg_cancel(msg, hdr);
6524         return -EMSGSIZE;
6525 }
6526
6527 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6528                              struct net_device *netdev)
6529 {
6530         struct sk_buff *msg;
6531
6532         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6533         if (!msg)
6534                 return;
6535
6536         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6537                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
6538                 nlmsg_free(msg);
6539                 return;
6540         }
6541
6542         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6543                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6544 }
6545
6546 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6547                             struct net_device *netdev)
6548 {
6549         struct sk_buff *msg;
6550
6551         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6552         if (!msg)
6553                 return;
6554
6555         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6556                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6557                 nlmsg_free(msg);
6558                 return;
6559         }
6560
6561         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6562                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6563 }
6564
6565 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6566                                struct net_device *netdev)
6567 {
6568         struct sk_buff *msg;
6569
6570         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6571         if (!msg)
6572                 return;
6573
6574         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6575                                   NL80211_CMD_SCAN_ABORTED) < 0) {
6576                 nlmsg_free(msg);
6577                 return;
6578         }
6579
6580         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6581                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6582 }
6583
6584 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6585                                      struct net_device *netdev)
6586 {
6587         struct sk_buff *msg;
6588
6589         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6590         if (!msg)
6591                 return;
6592
6593         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6594                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6595                 nlmsg_free(msg);
6596                 return;
6597         }
6598
6599         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6600                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6601 }
6602
6603 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6604                              struct net_device *netdev, u32 cmd)
6605 {
6606         struct sk_buff *msg;
6607
6608         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6609         if (!msg)
6610                 return;
6611
6612         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6613                 nlmsg_free(msg);
6614                 return;
6615         }
6616
6617         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6618                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6619 }
6620
6621 /*
6622  * This can happen on global regulatory changes or device specific settings
6623  * based on custom world regulatory domains.
6624  */
6625 void nl80211_send_reg_change_event(struct regulatory_request *request)
6626 {
6627         struct sk_buff *msg;
6628         void *hdr;
6629
6630         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6631         if (!msg)
6632                 return;
6633
6634         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6635         if (!hdr) {
6636                 nlmsg_free(msg);
6637                 return;
6638         }
6639
6640         /* Userspace can always count this one always being set */
6641         NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6642
6643         if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6644                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6645                            NL80211_REGDOM_TYPE_WORLD);
6646         else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6647                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6648                            NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6649         else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6650                  request->intersect)
6651                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6652                            NL80211_REGDOM_TYPE_INTERSECTION);
6653         else {
6654                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6655                            NL80211_REGDOM_TYPE_COUNTRY);
6656                 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6657         }
6658
6659         if (wiphy_idx_valid(request->wiphy_idx))
6660                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6661
6662         if (genlmsg_end(msg, hdr) < 0) {
6663                 nlmsg_free(msg);
6664                 return;
6665         }
6666
6667         rcu_read_lock();
6668         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6669                                 GFP_ATOMIC);
6670         rcu_read_unlock();
6671
6672         return;
6673
6674 nla_put_failure:
6675         genlmsg_cancel(msg, hdr);
6676         nlmsg_free(msg);
6677 }
6678
6679 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6680                                     struct net_device *netdev,
6681                                     const u8 *buf, size_t len,
6682                                     enum nl80211_commands cmd, gfp_t gfp)
6683 {
6684         struct sk_buff *msg;
6685         void *hdr;
6686
6687         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6688         if (!msg)
6689                 return;
6690
6691         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6692         if (!hdr) {
6693                 nlmsg_free(msg);
6694                 return;
6695         }
6696
6697         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6698         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6699         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6700
6701         if (genlmsg_end(msg, hdr) < 0) {
6702                 nlmsg_free(msg);
6703                 return;
6704         }
6705
6706         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6707                                 nl80211_mlme_mcgrp.id, gfp);
6708         return;
6709
6710  nla_put_failure:
6711         genlmsg_cancel(msg, hdr);
6712         nlmsg_free(msg);
6713 }
6714
6715 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6716                           struct net_device *netdev, const u8 *buf,
6717                           size_t len, gfp_t gfp)
6718 {
6719         nl80211_send_mlme_event(rdev, netdev, buf, len,
6720                                 NL80211_CMD_AUTHENTICATE, gfp);
6721 }
6722
6723 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6724                            struct net_device *netdev, const u8 *buf,
6725                            size_t len, gfp_t gfp)
6726 {
6727         nl80211_send_mlme_event(rdev, netdev, buf, len,
6728                                 NL80211_CMD_ASSOCIATE, gfp);
6729 }
6730
6731 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6732                          struct net_device *netdev, const u8 *buf,
6733                          size_t len, gfp_t gfp)
6734 {
6735         nl80211_send_mlme_event(rdev, netdev, buf, len,
6736                                 NL80211_CMD_DEAUTHENTICATE, gfp);
6737 }
6738
6739 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6740                            struct net_device *netdev, const u8 *buf,
6741                            size_t len, gfp_t gfp)
6742 {
6743         nl80211_send_mlme_event(rdev, netdev, buf, len,
6744                                 NL80211_CMD_DISASSOCIATE, gfp);
6745 }
6746
6747 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6748                                 struct net_device *netdev, const u8 *buf,
6749                                 size_t len, gfp_t gfp)
6750 {
6751         nl80211_send_mlme_event(rdev, netdev, buf, len,
6752                                 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6753 }
6754
6755 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6756                                   struct net_device *netdev, const u8 *buf,
6757                                   size_t len, gfp_t gfp)
6758 {
6759         nl80211_send_mlme_event(rdev, netdev, buf, len,
6760                                 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6761 }
6762
6763 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6764                                       struct net_device *netdev, int cmd,
6765                                       const u8 *addr, gfp_t gfp)
6766 {
6767         struct sk_buff *msg;
6768         void *hdr;
6769
6770         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6771         if (!msg)
6772                 return;
6773
6774         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6775         if (!hdr) {
6776                 nlmsg_free(msg);
6777                 return;
6778         }
6779
6780         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6781         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6782         NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6783         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6784
6785         if (genlmsg_end(msg, hdr) < 0) {
6786                 nlmsg_free(msg);
6787                 return;
6788         }
6789
6790         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6791                                 nl80211_mlme_mcgrp.id, gfp);
6792         return;
6793
6794  nla_put_failure:
6795         genlmsg_cancel(msg, hdr);
6796         nlmsg_free(msg);
6797 }
6798
6799 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6800                                struct net_device *netdev, const u8 *addr,
6801                                gfp_t gfp)
6802 {
6803         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6804                                   addr, gfp);
6805 }
6806
6807 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6808                                 struct net_device *netdev, const u8 *addr,
6809                                 gfp_t gfp)
6810 {
6811         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6812                                   addr, gfp);
6813 }
6814
6815 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6816                                  struct net_device *netdev, const u8 *bssid,
6817                                  const u8 *req_ie, size_t req_ie_len,
6818                                  const u8 *resp_ie, size_t resp_ie_len,
6819                                  u16 status, gfp_t gfp)
6820 {
6821         struct sk_buff *msg;
6822         void *hdr;
6823
6824         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6825         if (!msg)
6826                 return;
6827
6828         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6829         if (!hdr) {
6830                 nlmsg_free(msg);
6831                 return;
6832         }
6833
6834         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6835         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6836         if (bssid)
6837                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6838         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6839         if (req_ie)
6840                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6841         if (resp_ie)
6842                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6843
6844         if (genlmsg_end(msg, hdr) < 0) {
6845                 nlmsg_free(msg);
6846                 return;
6847         }
6848
6849         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6850                                 nl80211_mlme_mcgrp.id, gfp);
6851         return;
6852
6853  nla_put_failure:
6854         genlmsg_cancel(msg, hdr);
6855         nlmsg_free(msg);
6856
6857 }
6858
6859 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6860                          struct net_device *netdev, const u8 *bssid,
6861                          const u8 *req_ie, size_t req_ie_len,
6862                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6863 {
6864         struct sk_buff *msg;
6865         void *hdr;
6866
6867         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6868         if (!msg)
6869                 return;
6870
6871         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6872         if (!hdr) {
6873                 nlmsg_free(msg);
6874                 return;
6875         }
6876
6877         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6878         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6879         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6880         if (req_ie)
6881                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6882         if (resp_ie)
6883                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6884
6885         if (genlmsg_end(msg, hdr) < 0) {
6886                 nlmsg_free(msg);
6887                 return;
6888         }
6889
6890         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6891                                 nl80211_mlme_mcgrp.id, gfp);
6892         return;
6893
6894  nla_put_failure:
6895         genlmsg_cancel(msg, hdr);
6896         nlmsg_free(msg);
6897
6898 }
6899
6900 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6901                                struct net_device *netdev, u16 reason,
6902                                const u8 *ie, size_t ie_len, bool from_ap)
6903 {
6904         struct sk_buff *msg;
6905         void *hdr;
6906
6907         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6908         if (!msg)
6909                 return;
6910
6911         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6912         if (!hdr) {
6913                 nlmsg_free(msg);
6914                 return;
6915         }
6916
6917         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6918         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6919         if (from_ap && reason)
6920                 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6921         if (from_ap)
6922                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6923         if (ie)
6924                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6925
6926         if (genlmsg_end(msg, hdr) < 0) {
6927                 nlmsg_free(msg);
6928                 return;
6929         }
6930
6931         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6932                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6933         return;
6934
6935  nla_put_failure:
6936         genlmsg_cancel(msg, hdr);
6937         nlmsg_free(msg);
6938
6939 }
6940
6941 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6942                              struct net_device *netdev, const u8 *bssid,
6943                              gfp_t gfp)
6944 {
6945         struct sk_buff *msg;
6946         void *hdr;
6947
6948         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6949         if (!msg)
6950                 return;
6951
6952         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6953         if (!hdr) {
6954                 nlmsg_free(msg);
6955                 return;
6956         }
6957
6958         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6959         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6960         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6961
6962         if (genlmsg_end(msg, hdr) < 0) {
6963                 nlmsg_free(msg);
6964                 return;
6965         }
6966
6967         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6968                                 nl80211_mlme_mcgrp.id, gfp);
6969         return;
6970
6971  nla_put_failure:
6972         genlmsg_cancel(msg, hdr);
6973         nlmsg_free(msg);
6974 }
6975
6976 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6977                 struct net_device *netdev,
6978                 const u8 *macaddr, const u8* ie, u8 ie_len,
6979                 gfp_t gfp)
6980 {
6981         struct sk_buff *msg;
6982         void *hdr;
6983
6984         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6985         if (!msg)
6986                 return;
6987
6988         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6989         if (!hdr) {
6990                 nlmsg_free(msg);
6991                 return;
6992         }
6993
6994         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6995         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6996         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6997         if (ie_len && ie)
6998                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6999
7000         if (genlmsg_end(msg, hdr) < 0) {
7001                 nlmsg_free(msg);
7002                 return;
7003         }
7004
7005         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7006                                 nl80211_mlme_mcgrp.id, gfp);
7007         return;
7008
7009  nla_put_failure:
7010         genlmsg_cancel(msg, hdr);
7011         nlmsg_free(msg);
7012 }
7013
7014 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7015                                  struct net_device *netdev, const u8 *addr,
7016                                  enum nl80211_key_type key_type, int key_id,
7017                                  const u8 *tsc, gfp_t gfp)
7018 {
7019         struct sk_buff *msg;
7020         void *hdr;
7021
7022         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7023         if (!msg)
7024                 return;
7025
7026         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7027         if (!hdr) {
7028                 nlmsg_free(msg);
7029                 return;
7030         }
7031
7032         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7033         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7034         if (addr)
7035                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7036         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7037         if (key_id != -1)
7038                 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7039         if (tsc)
7040                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7041
7042         if (genlmsg_end(msg, hdr) < 0) {
7043                 nlmsg_free(msg);
7044                 return;
7045         }
7046
7047         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7048                                 nl80211_mlme_mcgrp.id, gfp);
7049         return;
7050
7051  nla_put_failure:
7052         genlmsg_cancel(msg, hdr);
7053         nlmsg_free(msg);
7054 }
7055
7056 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7057                                     struct ieee80211_channel *channel_before,
7058                                     struct ieee80211_channel *channel_after)
7059 {
7060         struct sk_buff *msg;
7061         void *hdr;
7062         struct nlattr *nl_freq;
7063
7064         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7065         if (!msg)
7066                 return;
7067
7068         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7069         if (!hdr) {
7070                 nlmsg_free(msg);
7071                 return;
7072         }
7073
7074         /*
7075          * Since we are applying the beacon hint to a wiphy we know its
7076          * wiphy_idx is valid
7077          */
7078         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7079
7080         /* Before */
7081         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7082         if (!nl_freq)
7083                 goto nla_put_failure;
7084         if (nl80211_msg_put_channel(msg, channel_before))
7085                 goto nla_put_failure;
7086         nla_nest_end(msg, nl_freq);
7087
7088         /* After */
7089         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7090         if (!nl_freq)
7091                 goto nla_put_failure;
7092         if (nl80211_msg_put_channel(msg, channel_after))
7093                 goto nla_put_failure;
7094         nla_nest_end(msg, nl_freq);
7095
7096         if (genlmsg_end(msg, hdr) < 0) {
7097                 nlmsg_free(msg);
7098                 return;
7099         }
7100
7101         rcu_read_lock();
7102         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7103                                 GFP_ATOMIC);
7104         rcu_read_unlock();
7105
7106         return;
7107
7108 nla_put_failure:
7109         genlmsg_cancel(msg, hdr);
7110         nlmsg_free(msg);
7111 }
7112
7113 static void nl80211_send_remain_on_chan_event(
7114         int cmd, struct cfg80211_registered_device *rdev,
7115         struct net_device *netdev, u64 cookie,
7116         struct ieee80211_channel *chan,
7117         enum nl80211_channel_type channel_type,
7118         unsigned int duration, gfp_t gfp)
7119 {
7120         struct sk_buff *msg;
7121         void *hdr;
7122
7123         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7124         if (!msg)
7125                 return;
7126
7127         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7128         if (!hdr) {
7129                 nlmsg_free(msg);
7130                 return;
7131         }
7132
7133         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7134         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7135         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7136         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7137         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7138
7139         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7140                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7141
7142         if (genlmsg_end(msg, hdr) < 0) {
7143                 nlmsg_free(msg);
7144                 return;
7145         }
7146
7147         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7148                                 nl80211_mlme_mcgrp.id, gfp);
7149         return;
7150
7151  nla_put_failure:
7152         genlmsg_cancel(msg, hdr);
7153         nlmsg_free(msg);
7154 }
7155
7156 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7157                                     struct net_device *netdev, u64 cookie,
7158                                     struct ieee80211_channel *chan,
7159                                     enum nl80211_channel_type channel_type,
7160                                     unsigned int duration, gfp_t gfp)
7161 {
7162         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7163                                           rdev, netdev, cookie, chan,
7164                                           channel_type, duration, gfp);
7165 }
7166
7167 void nl80211_send_remain_on_channel_cancel(
7168         struct cfg80211_registered_device *rdev, struct net_device *netdev,
7169         u64 cookie, struct ieee80211_channel *chan,
7170         enum nl80211_channel_type channel_type, gfp_t gfp)
7171 {
7172         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7173                                           rdev, netdev, cookie, chan,
7174                                           channel_type, 0, gfp);
7175 }
7176
7177 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7178                             struct net_device *dev, const u8 *mac_addr,
7179                             struct station_info *sinfo, gfp_t gfp)
7180 {
7181         struct sk_buff *msg;
7182
7183         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7184         if (!msg)
7185                 return;
7186
7187         if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7188                 nlmsg_free(msg);
7189                 return;
7190         }
7191
7192         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7193                                 nl80211_mlme_mcgrp.id, gfp);
7194 }
7195
7196 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7197                                 struct net_device *dev, const u8 *mac_addr,
7198                                 gfp_t gfp)
7199 {
7200         struct sk_buff *msg;
7201         void *hdr;
7202
7203         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7204         if (!msg)
7205                 return;
7206
7207         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7208         if (!hdr) {
7209                 nlmsg_free(msg);
7210                 return;
7211         }
7212
7213         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7214         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7215
7216         if (genlmsg_end(msg, hdr) < 0) {
7217                 nlmsg_free(msg);
7218                 return;
7219         }
7220
7221         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7222                                 nl80211_mlme_mcgrp.id, gfp);
7223         return;
7224
7225  nla_put_failure:
7226         genlmsg_cancel(msg, hdr);
7227         nlmsg_free(msg);
7228 }
7229
7230 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7231                       struct net_device *netdev, u32 nlpid,
7232                       int freq, const u8 *buf, size_t len, gfp_t gfp)
7233 {
7234         struct sk_buff *msg;
7235         void *hdr;
7236         int err;
7237
7238         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7239         if (!msg)
7240                 return -ENOMEM;
7241
7242         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7243         if (!hdr) {
7244                 nlmsg_free(msg);
7245                 return -ENOMEM;
7246         }
7247
7248         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7249         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7250         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7251         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7252
7253         err = genlmsg_end(msg, hdr);
7254         if (err < 0) {
7255                 nlmsg_free(msg);
7256                 return err;
7257         }
7258
7259         err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7260         if (err < 0)
7261                 return err;
7262         return 0;
7263
7264  nla_put_failure:
7265         genlmsg_cancel(msg, hdr);
7266         nlmsg_free(msg);
7267         return -ENOBUFS;
7268 }
7269
7270 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7271                                  struct net_device *netdev, u64 cookie,
7272                                  const u8 *buf, size_t len, bool ack,
7273                                  gfp_t gfp)
7274 {
7275         struct sk_buff *msg;
7276         void *hdr;
7277
7278         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7279         if (!msg)
7280                 return;
7281
7282         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7283         if (!hdr) {
7284                 nlmsg_free(msg);
7285                 return;
7286         }
7287
7288         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7289         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7290         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7291         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7292         if (ack)
7293                 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7294
7295         if (genlmsg_end(msg, hdr) < 0) {
7296                 nlmsg_free(msg);
7297                 return;
7298         }
7299
7300         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7301                                 nl80211_mlme_mcgrp.id, gfp);
7302         return;
7303
7304  nla_put_failure:
7305         genlmsg_cancel(msg, hdr);
7306         nlmsg_free(msg);
7307 }
7308
7309 void
7310 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7311                              struct net_device *netdev,
7312                              enum nl80211_cqm_rssi_threshold_event rssi_event,
7313                              gfp_t gfp)
7314 {
7315         struct sk_buff *msg;
7316         struct nlattr *pinfoattr;
7317         void *hdr;
7318
7319         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7320         if (!msg)
7321                 return;
7322
7323         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7324         if (!hdr) {
7325                 nlmsg_free(msg);
7326                 return;
7327         }
7328
7329         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7330         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7331
7332         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7333         if (!pinfoattr)
7334                 goto nla_put_failure;
7335
7336         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7337                     rssi_event);
7338
7339         nla_nest_end(msg, pinfoattr);
7340
7341         if (genlmsg_end(msg, hdr) < 0) {
7342                 nlmsg_free(msg);
7343                 return;
7344         }
7345
7346         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7347                                 nl80211_mlme_mcgrp.id, gfp);
7348         return;
7349
7350  nla_put_failure:
7351         genlmsg_cancel(msg, hdr);
7352         nlmsg_free(msg);
7353 }
7354
7355 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7356                               struct net_device *netdev, const u8 *bssid,
7357                               const u8 *replay_ctr, gfp_t gfp)
7358 {
7359         struct sk_buff *msg;
7360         struct nlattr *rekey_attr;
7361         void *hdr;
7362
7363         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7364         if (!msg)
7365                 return;
7366
7367         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7368         if (!hdr) {
7369                 nlmsg_free(msg);
7370                 return;
7371         }
7372
7373         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7374         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7375         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7376
7377         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7378         if (!rekey_attr)
7379                 goto nla_put_failure;
7380
7381         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7382                 NL80211_REPLAY_CTR_LEN, replay_ctr);
7383
7384         nla_nest_end(msg, rekey_attr);
7385
7386         if (genlmsg_end(msg, hdr) < 0) {
7387                 nlmsg_free(msg);
7388                 return;
7389         }
7390
7391         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7392                                 nl80211_mlme_mcgrp.id, gfp);
7393         return;
7394
7395  nla_put_failure:
7396         genlmsg_cancel(msg, hdr);
7397         nlmsg_free(msg);
7398 }
7399
7400 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7401                                     struct net_device *netdev, int index,
7402                                     const u8 *bssid, bool preauth, gfp_t gfp)
7403 {
7404         struct sk_buff *msg;
7405         struct nlattr *attr;
7406         void *hdr;
7407
7408         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7409         if (!msg)
7410                 return;
7411
7412         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7413         if (!hdr) {
7414                 nlmsg_free(msg);
7415                 return;
7416         }
7417
7418         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7419         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7420
7421         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7422         if (!attr)
7423                 goto nla_put_failure;
7424
7425         NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7426         NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7427         if (preauth)
7428                 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7429
7430         nla_nest_end(msg, attr);
7431
7432         if (genlmsg_end(msg, hdr) < 0) {
7433                 nlmsg_free(msg);
7434                 return;
7435         }
7436
7437         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7438                                 nl80211_mlme_mcgrp.id, gfp);
7439         return;
7440
7441  nla_put_failure:
7442         genlmsg_cancel(msg, hdr);
7443         nlmsg_free(msg);
7444 }
7445
7446 void
7447 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7448                                 struct net_device *netdev, const u8 *peer,
7449                                 u32 num_packets, gfp_t gfp)
7450 {
7451         struct sk_buff *msg;
7452         struct nlattr *pinfoattr;
7453         void *hdr;
7454
7455         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7456         if (!msg)
7457                 return;
7458
7459         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7460         if (!hdr) {
7461                 nlmsg_free(msg);
7462                 return;
7463         }
7464
7465         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7466         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7467         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7468
7469         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7470         if (!pinfoattr)
7471                 goto nla_put_failure;
7472
7473         NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7474
7475         nla_nest_end(msg, pinfoattr);
7476
7477         if (genlmsg_end(msg, hdr) < 0) {
7478                 nlmsg_free(msg);
7479                 return;
7480         }
7481
7482         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7483                                 nl80211_mlme_mcgrp.id, gfp);
7484         return;
7485
7486  nla_put_failure:
7487         genlmsg_cancel(msg, hdr);
7488         nlmsg_free(msg);
7489 }
7490
7491 static int nl80211_netlink_notify(struct notifier_block * nb,
7492                                   unsigned long state,
7493                                   void *_notify)
7494 {
7495         struct netlink_notify *notify = _notify;
7496         struct cfg80211_registered_device *rdev;
7497         struct wireless_dev *wdev;
7498
7499         if (state != NETLINK_URELEASE)
7500                 return NOTIFY_DONE;
7501
7502         rcu_read_lock();
7503
7504         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7505                 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7506                         cfg80211_mlme_unregister_socket(wdev, notify->pid);
7507
7508         rcu_read_unlock();
7509
7510         return NOTIFY_DONE;
7511 }
7512
7513 static struct notifier_block nl80211_netlink_notifier = {
7514         .notifier_call = nl80211_netlink_notify,
7515 };
7516
7517 /* initialisation/exit functions */
7518
7519 int nl80211_init(void)
7520 {
7521         int err;
7522
7523         err = genl_register_family_with_ops(&nl80211_fam,
7524                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7525         if (err)
7526                 return err;
7527
7528         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7529         if (err)
7530                 goto err_out;
7531
7532         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7533         if (err)
7534                 goto err_out;
7535
7536         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7537         if (err)
7538                 goto err_out;
7539
7540         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7541         if (err)
7542                 goto err_out;
7543
7544 #ifdef CONFIG_NL80211_TESTMODE
7545         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7546         if (err)
7547                 goto err_out;
7548 #endif
7549
7550         err = netlink_register_notifier(&nl80211_netlink_notifier);
7551         if (err)
7552                 goto err_out;
7553
7554         return 0;
7555  err_out:
7556         genl_unregister_family(&nl80211_fam);
7557         return err;
7558 }
7559
7560 void nl80211_exit(void)
7561 {
7562         netlink_unregister_notifier(&nl80211_netlink_notifier);
7563         genl_unregister_family(&nl80211_fam);
7564 }