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