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         nla_nest_end(msg, sinfoattr);
2348
2349         if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2350                 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2351                         sinfo->assoc_req_ies);
2352
2353         return genlmsg_end(msg, hdr);
2354
2355  nla_put_failure:
2356         genlmsg_cancel(msg, hdr);
2357         return -EMSGSIZE;
2358 }
2359
2360 static int nl80211_dump_station(struct sk_buff *skb,
2361                                 struct netlink_callback *cb)
2362 {
2363         struct station_info sinfo;
2364         struct cfg80211_registered_device *dev;
2365         struct net_device *netdev;
2366         u8 mac_addr[ETH_ALEN];
2367         int sta_idx = cb->args[1];
2368         int err;
2369
2370         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2371         if (err)
2372                 return err;
2373
2374         if (!dev->ops->dump_station) {
2375                 err = -EOPNOTSUPP;
2376                 goto out_err;
2377         }
2378
2379         while (1) {
2380                 memset(&sinfo, 0, sizeof(sinfo));
2381                 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2382                                              mac_addr, &sinfo);
2383                 if (err == -ENOENT)
2384                         break;
2385                 if (err)
2386                         goto out_err;
2387
2388                 if (nl80211_send_station(skb,
2389                                 NETLINK_CB(cb->skb).pid,
2390                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2391                                 netdev, mac_addr,
2392                                 &sinfo) < 0)
2393                         goto out;
2394
2395                 sta_idx++;
2396         }
2397
2398
2399  out:
2400         cb->args[1] = sta_idx;
2401         err = skb->len;
2402  out_err:
2403         nl80211_finish_netdev_dump(dev);
2404
2405         return err;
2406 }
2407
2408 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2409 {
2410         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2411         struct net_device *dev = info->user_ptr[1];
2412         struct station_info sinfo;
2413         struct sk_buff *msg;
2414         u8 *mac_addr = NULL;
2415         int err;
2416
2417         memset(&sinfo, 0, sizeof(sinfo));
2418
2419         if (!info->attrs[NL80211_ATTR_MAC])
2420                 return -EINVAL;
2421
2422         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2423
2424         if (!rdev->ops->get_station)
2425                 return -EOPNOTSUPP;
2426
2427         err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2428         if (err)
2429                 return err;
2430
2431         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2432         if (!msg)
2433                 return -ENOMEM;
2434
2435         if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2436                                  dev, mac_addr, &sinfo) < 0) {
2437                 nlmsg_free(msg);
2438                 return -ENOBUFS;
2439         }
2440
2441         return genlmsg_reply(msg, info);
2442 }
2443
2444 /*
2445  * Get vlan interface making sure it is running and on the right wiphy.
2446  */
2447 static int get_vlan(struct genl_info *info,
2448                     struct cfg80211_registered_device *rdev,
2449                     struct net_device **vlan)
2450 {
2451         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2452         *vlan = NULL;
2453
2454         if (vlanattr) {
2455                 *vlan = dev_get_by_index(genl_info_net(info),
2456                                          nla_get_u32(vlanattr));
2457                 if (!*vlan)
2458                         return -ENODEV;
2459                 if (!(*vlan)->ieee80211_ptr)
2460                         return -EINVAL;
2461                 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2462                         return -EINVAL;
2463                 if (!netif_running(*vlan))
2464                         return -ENETDOWN;
2465         }
2466         return 0;
2467 }
2468
2469 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2470 {
2471         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2472         int err;
2473         struct net_device *dev = info->user_ptr[1];
2474         struct station_parameters params;
2475         u8 *mac_addr = NULL;
2476
2477         memset(&params, 0, sizeof(params));
2478
2479         params.listen_interval = -1;
2480         params.plink_state = -1;
2481
2482         if (info->attrs[NL80211_ATTR_STA_AID])
2483                 return -EINVAL;
2484
2485         if (!info->attrs[NL80211_ATTR_MAC])
2486                 return -EINVAL;
2487
2488         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2489
2490         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2491                 params.supported_rates =
2492                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2493                 params.supported_rates_len =
2494                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2495         }
2496
2497         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2498                 params.listen_interval =
2499                     nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2500
2501         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2502                 params.ht_capa =
2503                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2504
2505         if (parse_station_flags(info, &params))
2506                 return -EINVAL;
2507
2508         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2509                 params.plink_action =
2510                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2511
2512         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2513                 params.plink_state =
2514                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2515
2516         err = get_vlan(info, rdev, &params.vlan);
2517         if (err)
2518                 goto out;
2519
2520         /* validate settings */
2521         err = 0;
2522
2523         switch (dev->ieee80211_ptr->iftype) {
2524         case NL80211_IFTYPE_AP:
2525         case NL80211_IFTYPE_AP_VLAN:
2526         case NL80211_IFTYPE_P2P_GO:
2527                 /* disallow mesh-specific things */
2528                 if (params.plink_action)
2529                         err = -EINVAL;
2530                 break;
2531         case NL80211_IFTYPE_P2P_CLIENT:
2532         case NL80211_IFTYPE_STATION:
2533                 /* disallow things sta doesn't support */
2534                 if (params.plink_action)
2535                         err = -EINVAL;
2536                 if (params.vlan)
2537                         err = -EINVAL;
2538                 if (params.supported_rates &&
2539                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2540                         err = -EINVAL;
2541                 if (params.ht_capa)
2542                         err = -EINVAL;
2543                 if (params.listen_interval >= 0)
2544                         err = -EINVAL;
2545                 if (params.sta_flags_mask &
2546                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2547                                   BIT(NL80211_STA_FLAG_TDLS_PEER)))
2548                         err = -EINVAL;
2549                 /* can't change the TDLS bit */
2550                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2551                     (params.sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2552                         err = -EINVAL;
2553                 break;
2554         case NL80211_IFTYPE_MESH_POINT:
2555                 /* disallow things mesh doesn't support */
2556                 if (params.vlan)
2557                         err = -EINVAL;
2558                 if (params.ht_capa)
2559                         err = -EINVAL;
2560                 if (params.listen_interval >= 0)
2561                         err = -EINVAL;
2562                 if (params.sta_flags_mask &
2563                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2564                                   BIT(NL80211_STA_FLAG_MFP) |
2565                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
2566                         err = -EINVAL;
2567                 break;
2568         default:
2569                 err = -EINVAL;
2570         }
2571
2572         if (err)
2573                 goto out;
2574
2575         if (!rdev->ops->change_station) {
2576                 err = -EOPNOTSUPP;
2577                 goto out;
2578         }
2579
2580         err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2581
2582  out:
2583         if (params.vlan)
2584                 dev_put(params.vlan);
2585
2586         return err;
2587 }
2588
2589 static struct nla_policy
2590 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2591         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2592         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2593 };
2594
2595 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2596 {
2597         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2598         int err;
2599         struct net_device *dev = info->user_ptr[1];
2600         struct station_parameters params;
2601         u8 *mac_addr = NULL;
2602
2603         memset(&params, 0, sizeof(params));
2604
2605         if (!info->attrs[NL80211_ATTR_MAC])
2606                 return -EINVAL;
2607
2608         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2609                 return -EINVAL;
2610
2611         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2612                 return -EINVAL;
2613
2614         if (!info->attrs[NL80211_ATTR_STA_AID])
2615                 return -EINVAL;
2616
2617         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2618         params.supported_rates =
2619                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2620         params.supported_rates_len =
2621                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2622         params.listen_interval =
2623                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2624
2625         params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2626         if (!params.aid || params.aid > IEEE80211_MAX_AID)
2627                 return -EINVAL;
2628
2629         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2630                 params.ht_capa =
2631                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2632
2633         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2634                 params.plink_action =
2635                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2636
2637         if (parse_station_flags(info, &params))
2638                 return -EINVAL;
2639
2640         /* parse WME attributes if sta is WME capable */
2641         if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2642             (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2643             info->attrs[NL80211_ATTR_STA_WME]) {
2644                 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2645                 struct nlattr *nla;
2646
2647                 nla = info->attrs[NL80211_ATTR_STA_WME];
2648                 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2649                                        nl80211_sta_wme_policy);
2650                 if (err)
2651                         return err;
2652
2653                 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2654                         params.uapsd_queues =
2655                              nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2656                 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2657                         return -EINVAL;
2658
2659                 if (tb[NL80211_STA_WME_MAX_SP])
2660                         params.max_sp =
2661                              nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2662
2663                 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2664                         return -EINVAL;
2665
2666                 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2667         }
2668
2669         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2670             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2671             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2672             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO &&
2673             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
2674                 return -EINVAL;
2675
2676         /*
2677          * Only managed stations can add TDLS peers, and only when the
2678          * wiphy supports external TDLS setup.
2679          */
2680         if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION &&
2681             !((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2682               (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2683               (rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)))
2684                 return -EINVAL;
2685
2686         err = get_vlan(info, rdev, &params.vlan);
2687         if (err)
2688                 goto out;
2689
2690         /* validate settings */
2691         err = 0;
2692
2693         if (!rdev->ops->add_station) {
2694                 err = -EOPNOTSUPP;
2695                 goto out;
2696         }
2697
2698         err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2699
2700  out:
2701         if (params.vlan)
2702                 dev_put(params.vlan);
2703         return err;
2704 }
2705
2706 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2707 {
2708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2709         struct net_device *dev = info->user_ptr[1];
2710         u8 *mac_addr = NULL;
2711
2712         if (info->attrs[NL80211_ATTR_MAC])
2713                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2714
2715         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2716             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2717             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2718             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2719                 return -EINVAL;
2720
2721         if (!rdev->ops->del_station)
2722                 return -EOPNOTSUPP;
2723
2724         return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2725 }
2726
2727 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2728                                 int flags, struct net_device *dev,
2729                                 u8 *dst, u8 *next_hop,
2730                                 struct mpath_info *pinfo)
2731 {
2732         void *hdr;
2733         struct nlattr *pinfoattr;
2734
2735         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2736         if (!hdr)
2737                 return -1;
2738
2739         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2740         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2741         NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2742
2743         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2744
2745         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2746         if (!pinfoattr)
2747                 goto nla_put_failure;
2748         if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2749                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2750                             pinfo->frame_qlen);
2751         if (pinfo->filled & MPATH_INFO_SN)
2752                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2753                             pinfo->sn);
2754         if (pinfo->filled & MPATH_INFO_METRIC)
2755                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2756                             pinfo->metric);
2757         if (pinfo->filled & MPATH_INFO_EXPTIME)
2758                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2759                             pinfo->exptime);
2760         if (pinfo->filled & MPATH_INFO_FLAGS)
2761                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2762                             pinfo->flags);
2763         if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2764                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2765                             pinfo->discovery_timeout);
2766         if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2767                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2768                             pinfo->discovery_retries);
2769
2770         nla_nest_end(msg, pinfoattr);
2771
2772         return genlmsg_end(msg, hdr);
2773
2774  nla_put_failure:
2775         genlmsg_cancel(msg, hdr);
2776         return -EMSGSIZE;
2777 }
2778
2779 static int nl80211_dump_mpath(struct sk_buff *skb,
2780                               struct netlink_callback *cb)
2781 {
2782         struct mpath_info pinfo;
2783         struct cfg80211_registered_device *dev;
2784         struct net_device *netdev;
2785         u8 dst[ETH_ALEN];
2786         u8 next_hop[ETH_ALEN];
2787         int path_idx = cb->args[1];
2788         int err;
2789
2790         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2791         if (err)
2792                 return err;
2793
2794         if (!dev->ops->dump_mpath) {
2795                 err = -EOPNOTSUPP;
2796                 goto out_err;
2797         }
2798
2799         if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2800                 err = -EOPNOTSUPP;
2801                 goto out_err;
2802         }
2803
2804         while (1) {
2805                 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2806                                            dst, next_hop, &pinfo);
2807                 if (err == -ENOENT)
2808                         break;
2809                 if (err)
2810                         goto out_err;
2811
2812                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2813                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
2814                                        netdev, dst, next_hop,
2815                                        &pinfo) < 0)
2816                         goto out;
2817
2818                 path_idx++;
2819         }
2820
2821
2822  out:
2823         cb->args[1] = path_idx;
2824         err = skb->len;
2825  out_err:
2826         nl80211_finish_netdev_dump(dev);
2827         return err;
2828 }
2829
2830 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2831 {
2832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2833         int err;
2834         struct net_device *dev = info->user_ptr[1];
2835         struct mpath_info pinfo;
2836         struct sk_buff *msg;
2837         u8 *dst = NULL;
2838         u8 next_hop[ETH_ALEN];
2839
2840         memset(&pinfo, 0, sizeof(pinfo));
2841
2842         if (!info->attrs[NL80211_ATTR_MAC])
2843                 return -EINVAL;
2844
2845         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2846
2847         if (!rdev->ops->get_mpath)
2848                 return -EOPNOTSUPP;
2849
2850         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2851                 return -EOPNOTSUPP;
2852
2853         err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2854         if (err)
2855                 return err;
2856
2857         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2858         if (!msg)
2859                 return -ENOMEM;
2860
2861         if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2862                                  dev, dst, next_hop, &pinfo) < 0) {
2863                 nlmsg_free(msg);
2864                 return -ENOBUFS;
2865         }
2866
2867         return genlmsg_reply(msg, info);
2868 }
2869
2870 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2871 {
2872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2873         struct net_device *dev = info->user_ptr[1];
2874         u8 *dst = NULL;
2875         u8 *next_hop = NULL;
2876
2877         if (!info->attrs[NL80211_ATTR_MAC])
2878                 return -EINVAL;
2879
2880         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2881                 return -EINVAL;
2882
2883         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2884         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2885
2886         if (!rdev->ops->change_mpath)
2887                 return -EOPNOTSUPP;
2888
2889         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2890                 return -EOPNOTSUPP;
2891
2892         return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2893 }
2894
2895 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2896 {
2897         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2898         struct net_device *dev = info->user_ptr[1];
2899         u8 *dst = NULL;
2900         u8 *next_hop = NULL;
2901
2902         if (!info->attrs[NL80211_ATTR_MAC])
2903                 return -EINVAL;
2904
2905         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2906                 return -EINVAL;
2907
2908         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2909         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2910
2911         if (!rdev->ops->add_mpath)
2912                 return -EOPNOTSUPP;
2913
2914         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2915                 return -EOPNOTSUPP;
2916
2917         return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2918 }
2919
2920 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2921 {
2922         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2923         struct net_device *dev = info->user_ptr[1];
2924         u8 *dst = NULL;
2925
2926         if (info->attrs[NL80211_ATTR_MAC])
2927                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2928
2929         if (!rdev->ops->del_mpath)
2930                 return -EOPNOTSUPP;
2931
2932         return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2933 }
2934
2935 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2936 {
2937         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2938         struct net_device *dev = info->user_ptr[1];
2939         struct bss_parameters params;
2940
2941         memset(&params, 0, sizeof(params));
2942         /* default to not changing parameters */
2943         params.use_cts_prot = -1;
2944         params.use_short_preamble = -1;
2945         params.use_short_slot_time = -1;
2946         params.ap_isolate = -1;
2947         params.ht_opmode = -1;
2948
2949         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2950                 params.use_cts_prot =
2951                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2952         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2953                 params.use_short_preamble =
2954                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2955         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2956                 params.use_short_slot_time =
2957                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2958         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2959                 params.basic_rates =
2960                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2961                 params.basic_rates_len =
2962                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2963         }
2964         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2965                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2966         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2967                 params.ht_opmode =
2968                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2969
2970         if (!rdev->ops->change_bss)
2971                 return -EOPNOTSUPP;
2972
2973         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2974             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2975                 return -EOPNOTSUPP;
2976
2977         return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2978 }
2979
2980 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2981         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
2982         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
2983         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
2984         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
2985         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
2986         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
2987 };
2988
2989 static int parse_reg_rule(struct nlattr *tb[],
2990         struct ieee80211_reg_rule *reg_rule)
2991 {
2992         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2993         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2994
2995         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2996                 return -EINVAL;
2997         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2998                 return -EINVAL;
2999         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3000                 return -EINVAL;
3001         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3002                 return -EINVAL;
3003         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3004                 return -EINVAL;
3005
3006         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3007
3008         freq_range->start_freq_khz =
3009                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3010         freq_range->end_freq_khz =
3011                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3012         freq_range->max_bandwidth_khz =
3013                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3014
3015         power_rule->max_eirp =
3016                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3017
3018         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3019                 power_rule->max_antenna_gain =
3020                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3021
3022         return 0;
3023 }
3024
3025 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3026 {
3027         int r;
3028         char *data = NULL;
3029
3030         /*
3031          * You should only get this when cfg80211 hasn't yet initialized
3032          * completely when built-in to the kernel right between the time
3033          * window between nl80211_init() and regulatory_init(), if that is
3034          * even possible.
3035          */
3036         mutex_lock(&cfg80211_mutex);
3037         if (unlikely(!cfg80211_regdomain)) {
3038                 mutex_unlock(&cfg80211_mutex);
3039                 return -EINPROGRESS;
3040         }
3041         mutex_unlock(&cfg80211_mutex);
3042
3043         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3044                 return -EINVAL;
3045
3046         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3047
3048         r = regulatory_hint_user(data);
3049
3050         return r;
3051 }
3052
3053 static int nl80211_get_mesh_config(struct sk_buff *skb,
3054                                    struct genl_info *info)
3055 {
3056         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3057         struct net_device *dev = info->user_ptr[1];
3058         struct wireless_dev *wdev = dev->ieee80211_ptr;
3059         struct mesh_config cur_params;
3060         int err = 0;
3061         void *hdr;
3062         struct nlattr *pinfoattr;
3063         struct sk_buff *msg;
3064
3065         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3066                 return -EOPNOTSUPP;
3067
3068         if (!rdev->ops->get_mesh_config)
3069                 return -EOPNOTSUPP;
3070
3071         wdev_lock(wdev);
3072         /* If not connected, get default parameters */
3073         if (!wdev->mesh_id_len)
3074                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3075         else
3076                 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3077                                                  &cur_params);
3078         wdev_unlock(wdev);
3079
3080         if (err)
3081                 return err;
3082
3083         /* Draw up a netlink message to send back */
3084         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3085         if (!msg)
3086                 return -ENOMEM;
3087         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3088                              NL80211_CMD_GET_MESH_CONFIG);
3089         if (!hdr)
3090                 goto out;
3091         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3092         if (!pinfoattr)
3093                 goto nla_put_failure;
3094         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3095         NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3096                         cur_params.dot11MeshRetryTimeout);
3097         NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3098                         cur_params.dot11MeshConfirmTimeout);
3099         NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3100                         cur_params.dot11MeshHoldingTimeout);
3101         NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3102                         cur_params.dot11MeshMaxPeerLinks);
3103         NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3104                         cur_params.dot11MeshMaxRetries);
3105         NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3106                         cur_params.dot11MeshTTL);
3107         NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3108                         cur_params.element_ttl);
3109         NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3110                         cur_params.auto_open_plinks);
3111         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3112                         cur_params.dot11MeshHWMPmaxPREQretries);
3113         NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3114                         cur_params.path_refresh_time);
3115         NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3116                         cur_params.min_discovery_timeout);
3117         NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3118                         cur_params.dot11MeshHWMPactivePathTimeout);
3119         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3120                         cur_params.dot11MeshHWMPpreqMinInterval);
3121         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3122                         cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3123         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3124                         cur_params.dot11MeshHWMPRootMode);
3125         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3126                         cur_params.dot11MeshHWMPRannInterval);
3127         NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3128                         cur_params.dot11MeshGateAnnouncementProtocol);
3129         nla_nest_end(msg, pinfoattr);
3130         genlmsg_end(msg, hdr);
3131         return genlmsg_reply(msg, info);
3132
3133  nla_put_failure:
3134         genlmsg_cancel(msg, hdr);
3135  out:
3136         nlmsg_free(msg);
3137         return -ENOBUFS;
3138 }
3139
3140 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3141         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3142         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3143         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3144         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3145         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3146         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3147         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3148         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3149
3150         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3151         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3152         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3153         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3154         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3155         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3156         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3157         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3158         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3159 };
3160
3161 static const struct nla_policy
3162         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3163         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3164         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3165         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3166         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3167                 .len = IEEE80211_MAX_DATA_LEN },
3168         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3169 };
3170
3171 static int nl80211_parse_mesh_config(struct genl_info *info,
3172                                      struct mesh_config *cfg,
3173                                      u32 *mask_out)
3174 {
3175         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3176         u32 mask = 0;
3177
3178 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3179 do {\
3180         if (table[attr_num]) {\
3181                 cfg->param = nla_fn(table[attr_num]); \
3182                 mask |= (1 << (attr_num - 1)); \
3183         } \
3184 } while (0);\
3185
3186
3187         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3188                 return -EINVAL;
3189         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3190                              info->attrs[NL80211_ATTR_MESH_CONFIG],
3191                              nl80211_meshconf_params_policy))
3192                 return -EINVAL;
3193
3194         /* This makes sure that there aren't more than 32 mesh config
3195          * parameters (otherwise our bitfield scheme would not work.) */
3196         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3197
3198         /* Fill in the params struct */
3199         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3200                         mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3201         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3202                         mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3203         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3204                         mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3205         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3206                         mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3207         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3208                         mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3209         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3210                         mask, NL80211_MESHCONF_TTL, nla_get_u8);
3211         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3212                         mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3213         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3214                         mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3216                         mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3217                         nla_get_u8);
3218         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3219                         mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3220         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3221                         mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3222                         nla_get_u16);
3223         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3224                         mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3225                         nla_get_u32);
3226         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3227                         mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3228                         nla_get_u16);
3229         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3230                         dot11MeshHWMPnetDiameterTraversalTime,
3231                         mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3232                         nla_get_u16);
3233         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3234                         dot11MeshHWMPRootMode, mask,
3235                         NL80211_MESHCONF_HWMP_ROOTMODE,
3236                         nla_get_u8);
3237         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3238                         dot11MeshHWMPRannInterval, mask,
3239                         NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3240                         nla_get_u16);
3241         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3242                         dot11MeshGateAnnouncementProtocol, mask,
3243                         NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3244                         nla_get_u8);
3245         if (mask_out)
3246                 *mask_out = mask;
3247
3248         return 0;
3249
3250 #undef FILL_IN_MESH_PARAM_IF_SET
3251 }
3252
3253 static int nl80211_parse_mesh_setup(struct genl_info *info,
3254                                      struct mesh_setup *setup)
3255 {
3256         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3257
3258         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3259                 return -EINVAL;
3260         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3261                              info->attrs[NL80211_ATTR_MESH_SETUP],
3262                              nl80211_mesh_setup_params_policy))
3263                 return -EINVAL;
3264
3265         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3266                 setup->path_sel_proto =
3267                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3268                  IEEE80211_PATH_PROTOCOL_VENDOR :
3269                  IEEE80211_PATH_PROTOCOL_HWMP;
3270
3271         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3272                 setup->path_metric =
3273                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3274                  IEEE80211_PATH_METRIC_VENDOR :
3275                  IEEE80211_PATH_METRIC_AIRTIME;
3276
3277
3278         if (tb[NL80211_MESH_SETUP_IE]) {
3279                 struct nlattr *ieattr =
3280                         tb[NL80211_MESH_SETUP_IE];
3281                 if (!is_valid_ie_attr(ieattr))
3282                         return -EINVAL;
3283                 setup->ie = nla_data(ieattr);
3284                 setup->ie_len = nla_len(ieattr);
3285         }
3286         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3287         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3288
3289         return 0;
3290 }
3291
3292 static int nl80211_update_mesh_config(struct sk_buff *skb,
3293                                       struct genl_info *info)
3294 {
3295         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3296         struct net_device *dev = info->user_ptr[1];
3297         struct wireless_dev *wdev = dev->ieee80211_ptr;
3298         struct mesh_config cfg;
3299         u32 mask;
3300         int err;
3301
3302         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3303                 return -EOPNOTSUPP;
3304
3305         if (!rdev->ops->update_mesh_config)
3306                 return -EOPNOTSUPP;
3307
3308         err = nl80211_parse_mesh_config(info, &cfg, &mask);
3309         if (err)
3310                 return err;
3311
3312         wdev_lock(wdev);
3313         if (!wdev->mesh_id_len)
3314                 err = -ENOLINK;
3315
3316         if (!err)
3317                 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3318                                                     mask, &cfg);
3319
3320         wdev_unlock(wdev);
3321
3322         return err;
3323 }
3324
3325 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3326 {
3327         struct sk_buff *msg;
3328         void *hdr = NULL;
3329         struct nlattr *nl_reg_rules;
3330         unsigned int i;
3331         int err = -EINVAL;
3332
3333         mutex_lock(&cfg80211_mutex);
3334
3335         if (!cfg80211_regdomain)
3336                 goto out;
3337
3338         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3339         if (!msg) {
3340                 err = -ENOBUFS;
3341                 goto out;
3342         }
3343
3344         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3345                              NL80211_CMD_GET_REG);
3346         if (!hdr)
3347                 goto put_failure;
3348
3349         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3350                 cfg80211_regdomain->alpha2);
3351
3352         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3353         if (!nl_reg_rules)
3354                 goto nla_put_failure;
3355
3356         for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3357                 struct nlattr *nl_reg_rule;
3358                 const struct ieee80211_reg_rule *reg_rule;
3359                 const struct ieee80211_freq_range *freq_range;
3360                 const struct ieee80211_power_rule *power_rule;
3361
3362                 reg_rule = &cfg80211_regdomain->reg_rules[i];
3363                 freq_range = &reg_rule->freq_range;
3364                 power_rule = &reg_rule->power_rule;
3365
3366                 nl_reg_rule = nla_nest_start(msg, i);
3367                 if (!nl_reg_rule)
3368                         goto nla_put_failure;
3369
3370                 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3371                         reg_rule->flags);
3372                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3373                         freq_range->start_freq_khz);
3374                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3375                         freq_range->end_freq_khz);
3376                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3377                         freq_range->max_bandwidth_khz);
3378                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3379                         power_rule->max_antenna_gain);
3380                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3381                         power_rule->max_eirp);
3382
3383                 nla_nest_end(msg, nl_reg_rule);
3384         }
3385
3386         nla_nest_end(msg, nl_reg_rules);
3387
3388         genlmsg_end(msg, hdr);
3389         err = genlmsg_reply(msg, info);
3390         goto out;
3391
3392 nla_put_failure:
3393         genlmsg_cancel(msg, hdr);
3394 put_failure:
3395         nlmsg_free(msg);
3396         err = -EMSGSIZE;
3397 out:
3398         mutex_unlock(&cfg80211_mutex);
3399         return err;
3400 }
3401
3402 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3403 {
3404         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3405         struct nlattr *nl_reg_rule;
3406         char *alpha2 = NULL;
3407         int rem_reg_rules = 0, r = 0;
3408         u32 num_rules = 0, rule_idx = 0, size_of_regd;
3409         struct ieee80211_regdomain *rd = NULL;
3410
3411         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3412                 return -EINVAL;
3413
3414         if (!info->attrs[NL80211_ATTR_REG_RULES])
3415                 return -EINVAL;
3416
3417         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3418
3419         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3420                         rem_reg_rules) {
3421                 num_rules++;
3422                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3423                         return -EINVAL;
3424         }
3425
3426         mutex_lock(&cfg80211_mutex);
3427
3428         if (!reg_is_valid_request(alpha2)) {
3429                 r = -EINVAL;
3430                 goto bad_reg;
3431         }
3432
3433         size_of_regd = sizeof(struct ieee80211_regdomain) +
3434                 (num_rules * sizeof(struct ieee80211_reg_rule));
3435
3436         rd = kzalloc(size_of_regd, GFP_KERNEL);
3437         if (!rd) {
3438                 r = -ENOMEM;
3439                 goto bad_reg;
3440         }
3441
3442         rd->n_reg_rules = num_rules;
3443         rd->alpha2[0] = alpha2[0];
3444         rd->alpha2[1] = alpha2[1];
3445
3446         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3447                         rem_reg_rules) {
3448                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3449                         nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3450                         reg_rule_policy);
3451                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3452                 if (r)
3453                         goto bad_reg;
3454
3455                 rule_idx++;
3456
3457                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3458                         r = -EINVAL;
3459                         goto bad_reg;
3460                 }
3461         }
3462
3463         BUG_ON(rule_idx != num_rules);
3464
3465         r = set_regdom(rd);
3466
3467         mutex_unlock(&cfg80211_mutex);
3468
3469         return r;
3470
3471  bad_reg:
3472         mutex_unlock(&cfg80211_mutex);
3473         kfree(rd);
3474         return r;
3475 }
3476
3477 static int validate_scan_freqs(struct nlattr *freqs)
3478 {
3479         struct nlattr *attr1, *attr2;
3480         int n_channels = 0, tmp1, tmp2;
3481
3482         nla_for_each_nested(attr1, freqs, tmp1) {
3483                 n_channels++;
3484                 /*
3485                  * Some hardware has a limited channel list for
3486                  * scanning, and it is pretty much nonsensical
3487                  * to scan for a channel twice, so disallow that
3488                  * and don't require drivers to check that the
3489                  * channel list they get isn't longer than what
3490                  * they can scan, as long as they can scan all
3491                  * the channels they registered at once.
3492                  */
3493                 nla_for_each_nested(attr2, freqs, tmp2)
3494                         if (attr1 != attr2 &&
3495                             nla_get_u32(attr1) == nla_get_u32(attr2))
3496                                 return 0;
3497         }
3498
3499         return n_channels;
3500 }
3501
3502 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3503 {
3504         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3505         struct net_device *dev = info->user_ptr[1];
3506         struct cfg80211_scan_request *request;
3507         struct nlattr *attr;
3508         struct wiphy *wiphy;
3509         int err, tmp, n_ssids = 0, n_channels, i;
3510         size_t ie_len;
3511
3512         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3513                 return -EINVAL;
3514
3515         wiphy = &rdev->wiphy;
3516
3517         if (!rdev->ops->scan)
3518                 return -EOPNOTSUPP;
3519
3520         if (rdev->scan_req)
3521                 return -EBUSY;
3522
3523         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3524                 n_channels = validate_scan_freqs(
3525                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3526                 if (!n_channels)
3527                         return -EINVAL;
3528         } else {
3529                 enum ieee80211_band band;
3530                 n_channels = 0;
3531
3532                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3533                         if (wiphy->bands[band])
3534                                 n_channels += wiphy->bands[band]->n_channels;
3535         }
3536
3537         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3538                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3539                         n_ssids++;
3540
3541         if (n_ssids > wiphy->max_scan_ssids)
3542                 return -EINVAL;
3543
3544         if (info->attrs[NL80211_ATTR_IE])
3545                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3546         else
3547                 ie_len = 0;
3548
3549         if (ie_len > wiphy->max_scan_ie_len)
3550                 return -EINVAL;
3551
3552         request = kzalloc(sizeof(*request)
3553                         + sizeof(*request->ssids) * n_ssids
3554                         + sizeof(*request->channels) * n_channels
3555                         + ie_len, GFP_KERNEL);
3556         if (!request)
3557                 return -ENOMEM;
3558
3559         if (n_ssids)
3560                 request->ssids = (void *)&request->channels[n_channels];
3561         request->n_ssids = n_ssids;
3562         if (ie_len) {
3563                 if (request->ssids)
3564                         request->ie = (void *)(request->ssids + n_ssids);
3565                 else
3566                         request->ie = (void *)(request->channels + n_channels);
3567         }
3568
3569         i = 0;
3570         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3571                 /* user specified, bail out if channel not found */
3572                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3573                         struct ieee80211_channel *chan;
3574
3575                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3576
3577                         if (!chan) {
3578                                 err = -EINVAL;
3579                                 goto out_free;
3580                         }
3581
3582                         /* ignore disabled channels */
3583                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3584                                 continue;
3585
3586                         request->channels[i] = chan;
3587                         i++;
3588                 }
3589         } else {
3590                 enum ieee80211_band band;
3591
3592                 /* all channels */
3593                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3594                         int j;
3595                         if (!wiphy->bands[band])
3596                                 continue;
3597                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3598                                 struct ieee80211_channel *chan;
3599
3600                                 chan = &wiphy->bands[band]->channels[j];
3601
3602                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3603                                         continue;
3604
3605                                 request->channels[i] = chan;
3606                                 i++;
3607                         }
3608                 }
3609         }
3610
3611         if (!i) {
3612                 err = -EINVAL;
3613                 goto out_free;
3614         }
3615
3616         request->n_channels = i;
3617
3618         i = 0;
3619         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3620                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3621                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3622                                 err = -EINVAL;
3623                                 goto out_free;
3624                         }
3625                         request->ssids[i].ssid_len = nla_len(attr);
3626                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3627                         i++;
3628                 }
3629         }
3630
3631         if (info->attrs[NL80211_ATTR_IE]) {
3632                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3633                 memcpy((void *)request->ie,
3634                        nla_data(info->attrs[NL80211_ATTR_IE]),
3635                        request->ie_len);
3636         }
3637
3638         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3639                 if (wiphy->bands[i])
3640                         request->rates[i] =
3641                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
3642
3643         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3644                 nla_for_each_nested(attr,
3645                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3646                                     tmp) {
3647                         enum ieee80211_band band = nla_type(attr);
3648
3649                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3650                                 err = -EINVAL;
3651                                 goto out_free;
3652                         }
3653                         err = ieee80211_get_ratemask(wiphy->bands[band],
3654                                                      nla_data(attr),
3655                                                      nla_len(attr),
3656                                                      &request->rates[band]);
3657                         if (err)
3658                                 goto out_free;
3659                 }
3660         }
3661
3662         request->no_cck =
3663                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3664
3665         request->dev = dev;
3666         request->wiphy = &rdev->wiphy;
3667
3668         rdev->scan_req = request;
3669         err = rdev->ops->scan(&rdev->wiphy, dev, request);
3670
3671         if (!err) {
3672                 nl80211_send_scan_start(rdev, dev);
3673                 dev_hold(dev);
3674         } else {
3675  out_free:
3676                 rdev->scan_req = NULL;
3677                 kfree(request);
3678         }
3679
3680         return err;
3681 }
3682
3683 static int nl80211_start_sched_scan(struct sk_buff *skb,
3684                                     struct genl_info *info)
3685 {
3686         struct cfg80211_sched_scan_request *request;
3687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3688         struct net_device *dev = info->user_ptr[1];
3689         struct nlattr *attr;
3690         struct wiphy *wiphy;
3691         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3692         u32 interval;
3693         enum ieee80211_band band;
3694         size_t ie_len;
3695         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3696
3697         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3698             !rdev->ops->sched_scan_start)
3699                 return -EOPNOTSUPP;
3700
3701         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3702                 return -EINVAL;
3703
3704         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3705                 return -EINVAL;
3706
3707         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3708         if (interval == 0)
3709                 return -EINVAL;
3710
3711         wiphy = &rdev->wiphy;
3712
3713         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3714                 n_channels = validate_scan_freqs(
3715                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3716                 if (!n_channels)
3717                         return -EINVAL;
3718         } else {
3719                 n_channels = 0;
3720
3721                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3722                         if (wiphy->bands[band])
3723                                 n_channels += wiphy->bands[band]->n_channels;
3724         }
3725
3726         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3727                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3728                                     tmp)
3729                         n_ssids++;
3730
3731         if (n_ssids > wiphy->max_sched_scan_ssids)
3732                 return -EINVAL;
3733
3734         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3735                 nla_for_each_nested(attr,
3736                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3737                                     tmp)
3738                         n_match_sets++;
3739
3740         if (n_match_sets > wiphy->max_match_sets)
3741                 return -EINVAL;
3742
3743         if (info->attrs[NL80211_ATTR_IE])
3744                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3745         else
3746                 ie_len = 0;
3747
3748         if (ie_len > wiphy->max_sched_scan_ie_len)
3749                 return -EINVAL;
3750
3751         mutex_lock(&rdev->sched_scan_mtx);
3752
3753         if (rdev->sched_scan_req) {
3754                 err = -EINPROGRESS;
3755                 goto out;
3756         }
3757
3758         request = kzalloc(sizeof(*request)
3759                         + sizeof(*request->ssids) * n_ssids
3760                         + sizeof(*request->match_sets) * n_match_sets
3761                         + sizeof(*request->channels) * n_channels
3762                         + ie_len, GFP_KERNEL);
3763         if (!request) {
3764                 err = -ENOMEM;
3765                 goto out;
3766         }
3767
3768         if (n_ssids)
3769                 request->ssids = (void *)&request->channels[n_channels];
3770         request->n_ssids = n_ssids;
3771         if (ie_len) {
3772                 if (request->ssids)
3773                         request->ie = (void *)(request->ssids + n_ssids);
3774                 else
3775                         request->ie = (void *)(request->channels + n_channels);
3776         }
3777
3778         if (n_match_sets) {
3779                 if (request->ie)
3780                         request->match_sets = (void *)(request->ie + ie_len);
3781                 else if (request->ssids)
3782                         request->match_sets =
3783                                 (void *)(request->ssids + n_ssids);
3784                 else
3785                         request->match_sets =
3786                                 (void *)(request->channels + n_channels);
3787         }
3788         request->n_match_sets = n_match_sets;
3789
3790         i = 0;
3791         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3792                 /* user specified, bail out if channel not found */
3793                 nla_for_each_nested(attr,
3794                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3795                                     tmp) {
3796                         struct ieee80211_channel *chan;
3797
3798                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3799
3800                         if (!chan) {
3801                                 err = -EINVAL;
3802                                 goto out_free;
3803                         }
3804
3805                         /* ignore disabled channels */
3806                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3807                                 continue;
3808
3809                         request->channels[i] = chan;
3810                         i++;
3811                 }
3812         } else {
3813                 /* all channels */
3814                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3815                         int j;
3816                         if (!wiphy->bands[band])
3817                                 continue;
3818                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3819                                 struct ieee80211_channel *chan;
3820
3821                                 chan = &wiphy->bands[band]->channels[j];
3822
3823                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3824                                         continue;
3825
3826                                 request->channels[i] = chan;
3827                                 i++;
3828                         }
3829                 }
3830         }
3831
3832         if (!i) {
3833                 err = -EINVAL;
3834                 goto out_free;
3835         }
3836
3837         request->n_channels = i;
3838
3839         i = 0;
3840         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3841                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3842                                     tmp) {
3843                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3844                                 err = -EINVAL;
3845                                 goto out_free;
3846                         }
3847                         request->ssids[i].ssid_len = nla_len(attr);
3848                         memcpy(request->ssids[i].ssid, nla_data(attr),
3849                                nla_len(attr));
3850                         i++;
3851                 }
3852         }
3853
3854         i = 0;
3855         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3856                 nla_for_each_nested(attr,
3857                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3858                                     tmp) {
3859                         struct nlattr *ssid;
3860
3861                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3862                                   nla_data(attr), nla_len(attr),
3863                                   nl80211_match_policy);
3864                         ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3865                         if (ssid) {
3866                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3867                                         err = -EINVAL;
3868                                         goto out_free;
3869                                 }
3870                                 memcpy(request->match_sets[i].ssid.ssid,
3871                                        nla_data(ssid), nla_len(ssid));
3872                                 request->match_sets[i].ssid.ssid_len =
3873                                         nla_len(ssid);
3874                         }
3875                         i++;
3876                 }
3877         }
3878
3879         if (info->attrs[NL80211_ATTR_IE]) {
3880                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3881                 memcpy((void *)request->ie,
3882                        nla_data(info->attrs[NL80211_ATTR_IE]),
3883                        request->ie_len);
3884         }
3885
3886         request->dev = dev;
3887         request->wiphy = &rdev->wiphy;
3888         request->interval = interval;
3889
3890         err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3891         if (!err) {
3892                 rdev->sched_scan_req = request;
3893                 nl80211_send_sched_scan(rdev, dev,
3894                                         NL80211_CMD_START_SCHED_SCAN);
3895                 goto out;
3896         }
3897
3898 out_free:
3899         kfree(request);
3900 out:
3901         mutex_unlock(&rdev->sched_scan_mtx);
3902         return err;
3903 }
3904
3905 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3906                                    struct genl_info *info)
3907 {
3908         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3909         int err;
3910
3911         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3912             !rdev->ops->sched_scan_stop)
3913                 return -EOPNOTSUPP;
3914
3915         mutex_lock(&rdev->sched_scan_mtx);
3916         err = __cfg80211_stop_sched_scan(rdev, false);
3917         mutex_unlock(&rdev->sched_scan_mtx);
3918
3919         return err;
3920 }
3921
3922 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3923                             u32 seq, int flags,
3924                             struct cfg80211_registered_device *rdev,
3925                             struct wireless_dev *wdev,
3926                             struct cfg80211_internal_bss *intbss)
3927 {
3928         struct cfg80211_bss *res = &intbss->pub;
3929         void *hdr;
3930         struct nlattr *bss;
3931         int i;
3932
3933         ASSERT_WDEV_LOCK(wdev);
3934
3935         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3936                              NL80211_CMD_NEW_SCAN_RESULTS);
3937         if (!hdr)
3938                 return -1;
3939
3940         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3941
3942         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3943         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3944
3945         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3946         if (!bss)
3947                 goto nla_put_failure;
3948         if (!is_zero_ether_addr(res->bssid))
3949                 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3950         if (res->information_elements && res->len_information_elements)
3951                 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3952                         res->len_information_elements,
3953                         res->information_elements);
3954         if (res->beacon_ies && res->len_beacon_ies &&
3955             res->beacon_ies != res->information_elements)
3956                 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3957                         res->len_beacon_ies, res->beacon_ies);
3958         if (res->tsf)
3959                 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3960         if (res->beacon_interval)
3961                 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3962         NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3963         NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3964         NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3965                 jiffies_to_msecs(jiffies - intbss->ts));
3966
3967         switch (rdev->wiphy.signal_type) {
3968         case CFG80211_SIGNAL_TYPE_MBM:
3969                 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3970                 break;
3971         case CFG80211_SIGNAL_TYPE_UNSPEC:
3972                 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3973                 break;
3974         default:
3975                 break;
3976         }
3977
3978         switch (wdev->iftype) {
3979         case NL80211_IFTYPE_P2P_CLIENT:
3980         case NL80211_IFTYPE_STATION:
3981                 if (intbss == wdev->current_bss)
3982                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3983                                     NL80211_BSS_STATUS_ASSOCIATED);
3984                 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3985                         if (intbss != wdev->auth_bsses[i])
3986                                 continue;
3987                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3988                                     NL80211_BSS_STATUS_AUTHENTICATED);
3989                         break;
3990                 }
3991                 break;
3992         case NL80211_IFTYPE_ADHOC:
3993                 if (intbss == wdev->current_bss)
3994                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3995                                     NL80211_BSS_STATUS_IBSS_JOINED);
3996                 break;
3997         default:
3998                 break;
3999         }
4000
4001         nla_nest_end(msg, bss);
4002
4003         return genlmsg_end(msg, hdr);
4004
4005  nla_put_failure:
4006         genlmsg_cancel(msg, hdr);
4007         return -EMSGSIZE;
4008 }
4009
4010 static int nl80211_dump_scan(struct sk_buff *skb,
4011                              struct netlink_callback *cb)
4012 {
4013         struct cfg80211_registered_device *rdev;
4014         struct net_device *dev;
4015         struct cfg80211_internal_bss *scan;
4016         struct wireless_dev *wdev;
4017         int start = cb->args[1], idx = 0;
4018         int err;
4019
4020         err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4021         if (err)
4022                 return err;
4023
4024         wdev = dev->ieee80211_ptr;
4025
4026         wdev_lock(wdev);
4027         spin_lock_bh(&rdev->bss_lock);
4028         cfg80211_bss_expire(rdev);
4029
4030         cb->seq = rdev->bss_generation;
4031
4032         list_for_each_entry(scan, &rdev->bss_list, list) {
4033                 if (++idx <= start)
4034                         continue;
4035                 if (nl80211_send_bss(skb, cb,
4036                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4037                                 rdev, wdev, scan) < 0) {
4038                         idx--;
4039                         break;
4040                 }
4041         }
4042
4043         spin_unlock_bh(&rdev->bss_lock);
4044         wdev_unlock(wdev);
4045
4046         cb->args[1] = idx;
4047         nl80211_finish_netdev_dump(rdev);
4048
4049         return skb->len;
4050 }
4051
4052 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4053                                 int flags, struct net_device *dev,
4054                                 struct survey_info *survey)
4055 {
4056         void *hdr;
4057         struct nlattr *infoattr;
4058
4059         hdr = nl80211hdr_put(msg, pid, seq, flags,
4060                              NL80211_CMD_NEW_SURVEY_RESULTS);
4061         if (!hdr)
4062                 return -ENOMEM;
4063
4064         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4065
4066         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4067         if (!infoattr)
4068                 goto nla_put_failure;
4069
4070         NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4071                     survey->channel->center_freq);
4072         if (survey->filled & SURVEY_INFO_NOISE_DBM)
4073                 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4074                             survey->noise);
4075         if (survey->filled & SURVEY_INFO_IN_USE)
4076                 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4077         if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4078                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4079                             survey->channel_time);
4080         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4081                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4082                             survey->channel_time_busy);
4083         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4084                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4085                             survey->channel_time_ext_busy);
4086         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4087                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4088                             survey->channel_time_rx);
4089         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4090                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4091                             survey->channel_time_tx);
4092
4093         nla_nest_end(msg, infoattr);
4094
4095         return genlmsg_end(msg, hdr);
4096
4097  nla_put_failure:
4098         genlmsg_cancel(msg, hdr);
4099         return -EMSGSIZE;
4100 }
4101
4102 static int nl80211_dump_survey(struct sk_buff *skb,
4103                         struct netlink_callback *cb)
4104 {
4105         struct survey_info survey;
4106         struct cfg80211_registered_device *dev;
4107         struct net_device *netdev;
4108         int survey_idx = cb->args[1];
4109         int res;
4110
4111         res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4112         if (res)
4113                 return res;
4114
4115         if (!dev->ops->dump_survey) {
4116                 res = -EOPNOTSUPP;
4117                 goto out_err;
4118         }
4119
4120         while (1) {
4121                 struct ieee80211_channel *chan;
4122
4123                 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4124                                             &survey);
4125                 if (res == -ENOENT)
4126                         break;
4127                 if (res)
4128                         goto out_err;
4129
4130                 /* Survey without a channel doesn't make sense */
4131                 if (!survey.channel) {
4132                         res = -EINVAL;
4133                         goto out;
4134                 }
4135
4136                 chan = ieee80211_get_channel(&dev->wiphy,
4137                                              survey.channel->center_freq);
4138                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4139                         survey_idx++;
4140                         continue;
4141                 }
4142
4143                 if (nl80211_send_survey(skb,
4144                                 NETLINK_CB(cb->skb).pid,
4145                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4146                                 netdev,
4147                                 &survey) < 0)
4148                         goto out;
4149                 survey_idx++;
4150         }
4151
4152  out:
4153         cb->args[1] = survey_idx;
4154         res = skb->len;
4155  out_err:
4156         nl80211_finish_netdev_dump(dev);
4157         return res;
4158 }
4159
4160 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4161 {
4162         return auth_type <= NL80211_AUTHTYPE_MAX;
4163 }
4164
4165 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4166 {
4167         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4168                                   NL80211_WPA_VERSION_2));
4169 }
4170
4171 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4172 {
4173         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4174         struct net_device *dev = info->user_ptr[1];
4175         struct ieee80211_channel *chan;
4176         const u8 *bssid, *ssid, *ie = NULL;
4177         int err, ssid_len, ie_len = 0;
4178         enum nl80211_auth_type auth_type;
4179         struct key_parse key;
4180         bool local_state_change;
4181
4182         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4183                 return -EINVAL;
4184
4185         if (!info->attrs[NL80211_ATTR_MAC])
4186                 return -EINVAL;
4187
4188         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4189                 return -EINVAL;
4190
4191         if (!info->attrs[NL80211_ATTR_SSID])
4192                 return -EINVAL;
4193
4194         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4195                 return -EINVAL;
4196
4197         err = nl80211_parse_key(info, &key);
4198         if (err)
4199                 return err;
4200
4201         if (key.idx >= 0) {
4202                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4203                         return -EINVAL;
4204                 if (!key.p.key || !key.p.key_len)
4205                         return -EINVAL;
4206                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4207                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4208                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4209                      key.p.key_len != WLAN_KEY_LEN_WEP104))
4210                         return -EINVAL;
4211                 if (key.idx > 4)
4212                         return -EINVAL;
4213         } else {
4214                 key.p.key_len = 0;
4215                 key.p.key = NULL;
4216         }
4217
4218         if (key.idx >= 0) {
4219                 int i;
4220                 bool ok = false;
4221                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4222                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4223                                 ok = true;
4224                                 break;
4225                         }
4226                 }
4227                 if (!ok)
4228                         return -EINVAL;
4229         }
4230
4231         if (!rdev->ops->auth)
4232                 return -EOPNOTSUPP;
4233
4234         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4235             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4236                 return -EOPNOTSUPP;
4237
4238         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4239         chan = ieee80211_get_channel(&rdev->wiphy,
4240                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4241         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4242                 return -EINVAL;
4243
4244         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4245         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4246
4247         if (info->attrs[NL80211_ATTR_IE]) {
4248                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4249                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4250         }
4251
4252         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4253         if (!nl80211_valid_auth_type(auth_type))
4254                 return -EINVAL;
4255
4256         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4257
4258         return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4259                                   ssid, ssid_len, ie, ie_len,
4260                                   key.p.key, key.p.key_len, key.idx,
4261                                   local_state_change);
4262 }
4263
4264 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4265                                    struct genl_info *info,
4266                                    struct cfg80211_crypto_settings *settings,
4267                                    int cipher_limit)
4268 {
4269         memset(settings, 0, sizeof(*settings));
4270
4271         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4272
4273         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4274                 u16 proto;
4275                 proto = nla_get_u16(
4276                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4277                 settings->control_port_ethertype = cpu_to_be16(proto);
4278                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4279                     proto != ETH_P_PAE)
4280                         return -EINVAL;
4281                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4282                         settings->control_port_no_encrypt = true;
4283         } else
4284                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4285
4286         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4287                 void *data;
4288                 int len, i;
4289
4290                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4291                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4292                 settings->n_ciphers_pairwise = len / sizeof(u32);
4293
4294                 if (len % sizeof(u32))
4295                         return -EINVAL;
4296
4297                 if (settings->n_ciphers_pairwise > cipher_limit)
4298                         return -EINVAL;
4299
4300                 memcpy(settings->ciphers_pairwise, data, len);
4301
4302                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4303                         if (!cfg80211_supported_cipher_suite(
4304                                         &rdev->wiphy,
4305                                         settings->ciphers_pairwise[i]))
4306                                 return -EINVAL;
4307         }
4308
4309         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4310                 settings->cipher_group =
4311                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4312                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4313                                                      settings->cipher_group))
4314                         return -EINVAL;
4315         }
4316
4317         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4318                 settings->wpa_versions =
4319                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4320                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4321                         return -EINVAL;
4322         }
4323
4324         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4325                 void *data;
4326                 int len;
4327
4328                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4329                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4330                 settings->n_akm_suites = len / sizeof(u32);
4331
4332                 if (len % sizeof(u32))
4333                         return -EINVAL;
4334
4335                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4336                         return -EINVAL;
4337
4338                 memcpy(settings->akm_suites, data, len);
4339         }
4340
4341         return 0;
4342 }
4343
4344 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4345 {
4346         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4347         struct net_device *dev = info->user_ptr[1];
4348         struct cfg80211_crypto_settings crypto;
4349         struct ieee80211_channel *chan;
4350         const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4351         int err, ssid_len, ie_len = 0;
4352         bool use_mfp = false;
4353
4354         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4355                 return -EINVAL;
4356
4357         if (!info->attrs[NL80211_ATTR_MAC] ||
4358             !info->attrs[NL80211_ATTR_SSID] ||
4359             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4360                 return -EINVAL;
4361
4362         if (!rdev->ops->assoc)
4363                 return -EOPNOTSUPP;
4364
4365         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4366             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4367                 return -EOPNOTSUPP;
4368
4369         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4370
4371         chan = ieee80211_get_channel(&rdev->wiphy,
4372                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4373         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4374                 return -EINVAL;
4375
4376         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4377         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4378
4379         if (info->attrs[NL80211_ATTR_IE]) {
4380                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4381                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4382         }
4383
4384         if (info->attrs[NL80211_ATTR_USE_MFP]) {
4385                 enum nl80211_mfp mfp =
4386                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4387                 if (mfp == NL80211_MFP_REQUIRED)
4388                         use_mfp = true;
4389                 else if (mfp != NL80211_MFP_NO)
4390                         return -EINVAL;
4391         }
4392
4393         if (info->attrs[NL80211_ATTR_PREV_BSSID])
4394                 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4395
4396         err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4397         if (!err)
4398                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4399                                           ssid, ssid_len, ie, ie_len, use_mfp,
4400                                           &crypto);
4401
4402         return err;
4403 }
4404
4405 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4406 {
4407         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4408         struct net_device *dev = info->user_ptr[1];
4409         const u8 *ie = NULL, *bssid;
4410         int ie_len = 0;
4411         u16 reason_code;
4412         bool local_state_change;
4413
4414         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4415                 return -EINVAL;
4416
4417         if (!info->attrs[NL80211_ATTR_MAC])
4418                 return -EINVAL;
4419
4420         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4421                 return -EINVAL;
4422
4423         if (!rdev->ops->deauth)
4424                 return -EOPNOTSUPP;
4425
4426         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4427             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4428                 return -EOPNOTSUPP;
4429
4430         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4431
4432         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4433         if (reason_code == 0) {
4434                 /* Reason Code 0 is reserved */
4435                 return -EINVAL;
4436         }
4437
4438         if (info->attrs[NL80211_ATTR_IE]) {
4439                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4440                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4441         }
4442
4443         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4444
4445         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4446                                     local_state_change);
4447 }
4448
4449 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4450 {
4451         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4452         struct net_device *dev = info->user_ptr[1];
4453         const u8 *ie = NULL, *bssid;
4454         int ie_len = 0;
4455         u16 reason_code;
4456         bool local_state_change;
4457
4458         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4459                 return -EINVAL;
4460
4461         if (!info->attrs[NL80211_ATTR_MAC])
4462                 return -EINVAL;
4463
4464         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4465                 return -EINVAL;
4466
4467         if (!rdev->ops->disassoc)
4468                 return -EOPNOTSUPP;
4469
4470         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4471             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4472                 return -EOPNOTSUPP;
4473
4474         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4475
4476         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4477         if (reason_code == 0) {
4478                 /* Reason Code 0 is reserved */
4479                 return -EINVAL;
4480         }
4481
4482         if (info->attrs[NL80211_ATTR_IE]) {
4483                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4484                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4485         }
4486
4487         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4488
4489         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4490                                       local_state_change);
4491 }
4492
4493 static bool
4494 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4495                          int mcast_rate[IEEE80211_NUM_BANDS],
4496                          int rateval)
4497 {
4498         struct wiphy *wiphy = &rdev->wiphy;
4499         bool found = false;
4500         int band, i;
4501
4502         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4503                 struct ieee80211_supported_band *sband;
4504
4505                 sband = wiphy->bands[band];
4506                 if (!sband)
4507                         continue;
4508
4509                 for (i = 0; i < sband->n_bitrates; i++) {
4510                         if (sband->bitrates[i].bitrate == rateval) {
4511                                 mcast_rate[band] = i + 1;
4512                                 found = true;
4513                                 break;
4514                         }
4515                 }
4516         }
4517
4518         return found;
4519 }
4520
4521 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4522 {
4523         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4524         struct net_device *dev = info->user_ptr[1];
4525         struct cfg80211_ibss_params ibss;
4526         struct wiphy *wiphy;
4527         struct cfg80211_cached_keys *connkeys = NULL;
4528         int err;
4529
4530         memset(&ibss, 0, sizeof(ibss));
4531
4532         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4533                 return -EINVAL;
4534
4535         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4536             !info->attrs[NL80211_ATTR_SSID] ||
4537             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4538                 return -EINVAL;
4539
4540         ibss.beacon_interval = 100;
4541
4542         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4543                 ibss.beacon_interval =
4544                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4545                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4546                         return -EINVAL;
4547         }
4548
4549         if (!rdev->ops->join_ibss)
4550                 return -EOPNOTSUPP;
4551
4552         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4553                 return -EOPNOTSUPP;
4554
4555         wiphy = &rdev->wiphy;
4556
4557         if (info->attrs[NL80211_ATTR_MAC]) {
4558                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4559
4560                 if (!is_valid_ether_addr(ibss.bssid))
4561                         return -EINVAL;
4562         }
4563         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4564         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4565
4566         if (info->attrs[NL80211_ATTR_IE]) {
4567                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4568                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4569         }
4570
4571         ibss.channel = ieee80211_get_channel(wiphy,
4572                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4573         if (!ibss.channel ||
4574             ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4575             ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4576                 return -EINVAL;
4577
4578         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4579         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4580
4581         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4582                 u8 *rates =
4583                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4584                 int n_rates =
4585                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4586                 struct ieee80211_supported_band *sband =
4587                         wiphy->bands[ibss.channel->band];
4588                 int err;
4589
4590                 err = ieee80211_get_ratemask(sband, rates, n_rates,
4591                                              &ibss.basic_rates);
4592                 if (err)
4593                         return err;
4594         }
4595
4596         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4597             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4598                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4599                 return -EINVAL;
4600
4601         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4602                 connkeys = nl80211_parse_connkeys(rdev,
4603                                         info->attrs[NL80211_ATTR_KEYS]);
4604                 if (IS_ERR(connkeys))
4605                         return PTR_ERR(connkeys);
4606         }
4607
4608         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4609         if (err)
4610                 kfree(connkeys);
4611         return err;
4612 }
4613
4614 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4615 {
4616         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4617         struct net_device *dev = info->user_ptr[1];
4618
4619         if (!rdev->ops->leave_ibss)
4620                 return -EOPNOTSUPP;
4621
4622         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4623                 return -EOPNOTSUPP;
4624
4625         return cfg80211_leave_ibss(rdev, dev, false);
4626 }
4627
4628 #ifdef CONFIG_NL80211_TESTMODE
4629 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4630         .name = "testmode",
4631 };
4632
4633 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4634 {
4635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4636         int err;
4637
4638         if (!info->attrs[NL80211_ATTR_TESTDATA])
4639                 return -EINVAL;
4640
4641         err = -EOPNOTSUPP;
4642         if (rdev->ops->testmode_cmd) {
4643                 rdev->testmode_info = info;
4644                 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4645                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4646                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4647                 rdev->testmode_info = NULL;
4648         }
4649
4650         return err;
4651 }
4652
4653 static int nl80211_testmode_dump(struct sk_buff *skb,
4654                                  struct netlink_callback *cb)
4655 {
4656         struct cfg80211_registered_device *dev;
4657         int err;
4658         long phy_idx;
4659         void *data = NULL;
4660         int data_len = 0;
4661
4662         if (cb->args[0]) {
4663                 /*
4664                  * 0 is a valid index, but not valid for args[0],
4665                  * so we need to offset by 1.
4666                  */
4667                 phy_idx = cb->args[0] - 1;
4668         } else {
4669                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4670                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
4671                                   nl80211_policy);
4672                 if (err)
4673                         return err;
4674                 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4675                         return -EINVAL;
4676                 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4677                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4678                         cb->args[1] =
4679                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4680         }
4681
4682         if (cb->args[1]) {
4683                 data = nla_data((void *)cb->args[1]);
4684                 data_len = nla_len((void *)cb->args[1]);
4685         }
4686
4687         mutex_lock(&cfg80211_mutex);
4688         dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4689         if (!dev) {
4690                 mutex_unlock(&cfg80211_mutex);
4691                 return -ENOENT;
4692         }
4693         cfg80211_lock_rdev(dev);
4694         mutex_unlock(&cfg80211_mutex);
4695
4696         if (!dev->ops->testmode_dump) {
4697                 err = -EOPNOTSUPP;
4698                 goto out_err;
4699         }
4700
4701         while (1) {
4702                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4703                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
4704                                            NL80211_CMD_TESTMODE);
4705                 struct nlattr *tmdata;
4706
4707                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4708                         genlmsg_cancel(skb, hdr);
4709                         break;
4710                 }
4711
4712                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4713                 if (!tmdata) {
4714                         genlmsg_cancel(skb, hdr);
4715                         break;
4716                 }
4717                 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4718                                               data, data_len);
4719                 nla_nest_end(skb, tmdata);
4720
4721                 if (err == -ENOBUFS || err == -ENOENT) {
4722                         genlmsg_cancel(skb, hdr);
4723                         break;
4724                 } else if (err) {
4725                         genlmsg_cancel(skb, hdr);
4726                         goto out_err;
4727                 }
4728
4729                 genlmsg_end(skb, hdr);
4730         }
4731
4732         err = skb->len;
4733         /* see above */
4734         cb->args[0] = phy_idx + 1;
4735  out_err:
4736         cfg80211_unlock_rdev(dev);
4737         return err;
4738 }
4739
4740 static struct sk_buff *
4741 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4742                               int approxlen, u32 pid, u32 seq, gfp_t gfp)
4743 {
4744         struct sk_buff *skb;
4745         void *hdr;
4746         struct nlattr *data;
4747
4748         skb = nlmsg_new(approxlen + 100, gfp);
4749         if (!skb)
4750                 return NULL;
4751
4752         hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4753         if (!hdr) {
4754                 kfree_skb(skb);
4755                 return NULL;
4756         }
4757
4758         NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4759         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4760
4761         ((void **)skb->cb)[0] = rdev;
4762         ((void **)skb->cb)[1] = hdr;
4763         ((void **)skb->cb)[2] = data;
4764
4765         return skb;
4766
4767  nla_put_failure:
4768         kfree_skb(skb);
4769         return NULL;
4770 }
4771
4772 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4773                                                   int approxlen)
4774 {
4775         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4776
4777         if (WARN_ON(!rdev->testmode_info))
4778                 return NULL;
4779
4780         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4781                                 rdev->testmode_info->snd_pid,
4782                                 rdev->testmode_info->snd_seq,
4783                                 GFP_KERNEL);
4784 }
4785 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4786
4787 int cfg80211_testmode_reply(struct sk_buff *skb)
4788 {
4789         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4790         void *hdr = ((void **)skb->cb)[1];
4791         struct nlattr *data = ((void **)skb->cb)[2];
4792
4793         if (WARN_ON(!rdev->testmode_info)) {
4794                 kfree_skb(skb);
4795                 return -EINVAL;
4796         }
4797
4798         nla_nest_end(skb, data);
4799         genlmsg_end(skb, hdr);
4800         return genlmsg_reply(skb, rdev->testmode_info);
4801 }
4802 EXPORT_SYMBOL(cfg80211_testmode_reply);
4803
4804 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4805                                                   int approxlen, gfp_t gfp)
4806 {
4807         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4808
4809         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4810 }
4811 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4812
4813 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4814 {
4815         void *hdr = ((void **)skb->cb)[1];
4816         struct nlattr *data = ((void **)skb->cb)[2];
4817
4818         nla_nest_end(skb, data);
4819         genlmsg_end(skb, hdr);
4820         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4821 }
4822 EXPORT_SYMBOL(cfg80211_testmode_event);
4823 #endif
4824
4825 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4826 {
4827         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4828         struct net_device *dev = info->user_ptr[1];
4829         struct cfg80211_connect_params connect;
4830         struct wiphy *wiphy;
4831         struct cfg80211_cached_keys *connkeys = NULL;
4832         int err;
4833
4834         memset(&connect, 0, sizeof(connect));
4835
4836         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4837                 return -EINVAL;
4838
4839         if (!info->attrs[NL80211_ATTR_SSID] ||
4840             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4841                 return -EINVAL;
4842
4843         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4844                 connect.auth_type =
4845                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4846                 if (!nl80211_valid_auth_type(connect.auth_type))
4847                         return -EINVAL;
4848         } else
4849                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4850
4851         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4852
4853         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4854                                       NL80211_MAX_NR_CIPHER_SUITES);
4855         if (err)
4856                 return err;
4857
4858         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4859             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4860                 return -EOPNOTSUPP;
4861
4862         wiphy = &rdev->wiphy;
4863
4864         if (info->attrs[NL80211_ATTR_MAC])
4865                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4866         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4867         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4868
4869         if (info->attrs[NL80211_ATTR_IE]) {
4870                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4871                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4872         }
4873
4874         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4875                 connect.channel =
4876                         ieee80211_get_channel(wiphy,
4877                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4878                 if (!connect.channel ||
4879                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
4880                         return -EINVAL;
4881         }
4882
4883         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4884                 connkeys = nl80211_parse_connkeys(rdev,
4885                                         info->attrs[NL80211_ATTR_KEYS]);
4886                 if (IS_ERR(connkeys))
4887                         return PTR_ERR(connkeys);
4888         }
4889
4890         err = cfg80211_connect(rdev, dev, &connect, connkeys);
4891         if (err)
4892                 kfree(connkeys);
4893         return err;
4894 }
4895
4896 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4897 {
4898         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4899         struct net_device *dev = info->user_ptr[1];
4900         u16 reason;
4901
4902         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4903                 reason = WLAN_REASON_DEAUTH_LEAVING;
4904         else
4905                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4906
4907         if (reason == 0)
4908                 return -EINVAL;
4909
4910         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4911             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4912                 return -EOPNOTSUPP;
4913
4914         return cfg80211_disconnect(rdev, dev, reason, true);
4915 }
4916
4917 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4918 {
4919         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4920         struct net *net;
4921         int err;
4922         u32 pid;
4923
4924         if (!info->attrs[NL80211_ATTR_PID])
4925                 return -EINVAL;
4926
4927         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4928
4929         net = get_net_ns_by_pid(pid);
4930         if (IS_ERR(net))
4931                 return PTR_ERR(net);
4932
4933         err = 0;
4934
4935         /* check if anything to do */
4936         if (!net_eq(wiphy_net(&rdev->wiphy), net))
4937                 err = cfg80211_switch_netns(rdev, net);
4938
4939         put_net(net);
4940         return err;
4941 }
4942
4943 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4944 {
4945         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4946         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4947                         struct cfg80211_pmksa *pmksa) = NULL;
4948         struct net_device *dev = info->user_ptr[1];
4949         struct cfg80211_pmksa pmksa;
4950
4951         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4952
4953         if (!info->attrs[NL80211_ATTR_MAC])
4954                 return -EINVAL;
4955
4956         if (!info->attrs[NL80211_ATTR_PMKID])
4957                 return -EINVAL;
4958
4959         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4960         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4961
4962         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4963             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4964                 return -EOPNOTSUPP;
4965
4966         switch (info->genlhdr->cmd) {
4967         case NL80211_CMD_SET_PMKSA:
4968                 rdev_ops = rdev->ops->set_pmksa;
4969                 break;
4970         case NL80211_CMD_DEL_PMKSA:
4971                 rdev_ops = rdev->ops->del_pmksa;
4972                 break;
4973         default:
4974                 WARN_ON(1);
4975                 break;
4976         }
4977
4978         if (!rdev_ops)
4979                 return -EOPNOTSUPP;
4980
4981         return rdev_ops(&rdev->wiphy, dev, &pmksa);
4982 }
4983
4984 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4985 {
4986         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4987         struct net_device *dev = info->user_ptr[1];
4988
4989         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4990             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4991                 return -EOPNOTSUPP;
4992
4993         if (!rdev->ops->flush_pmksa)
4994                 return -EOPNOTSUPP;
4995
4996         return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4997 }
4998
4999 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5000 {
5001         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5002         struct net_device *dev = info->user_ptr[1];
5003         u8 action_code, dialog_token;
5004         u16 status_code;
5005         u8 *peer;
5006
5007         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5008             !rdev->ops->tdls_mgmt)
5009                 return -EOPNOTSUPP;
5010
5011         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5012             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5013             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5014             !info->attrs[NL80211_ATTR_IE] ||
5015             !info->attrs[NL80211_ATTR_MAC])
5016                 return -EINVAL;
5017
5018         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5019         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5020         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5021         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5022
5023         return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5024                                     dialog_token, status_code,
5025                                     nla_data(info->attrs[NL80211_ATTR_IE]),
5026                                     nla_len(info->attrs[NL80211_ATTR_IE]));
5027 }
5028
5029 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5030 {
5031         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5032         struct net_device *dev = info->user_ptr[1];
5033         enum nl80211_tdls_operation operation;
5034         u8 *peer;
5035
5036         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5037             !rdev->ops->tdls_oper)
5038                 return -EOPNOTSUPP;
5039
5040         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5041             !info->attrs[NL80211_ATTR_MAC])
5042                 return -EINVAL;
5043
5044         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5045         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5046
5047         return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5048 }
5049
5050 static int nl80211_remain_on_channel(struct sk_buff *skb,
5051                                      struct genl_info *info)
5052 {
5053         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5054         struct net_device *dev = info->user_ptr[1];
5055         struct ieee80211_channel *chan;
5056         struct sk_buff *msg;
5057         void *hdr;
5058         u64 cookie;
5059         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5060         u32 freq, duration;
5061         int err;
5062
5063         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5064             !info->attrs[NL80211_ATTR_DURATION])
5065                 return -EINVAL;
5066
5067         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5068
5069         /*
5070          * We should be on that channel for at least one jiffie,
5071          * and more than 5 seconds seems excessive.
5072          */
5073         if (!duration || !msecs_to_jiffies(duration) ||
5074             duration > rdev->wiphy.max_remain_on_channel_duration)
5075                 return -EINVAL;
5076
5077         if (!rdev->ops->remain_on_channel)
5078                 return -EOPNOTSUPP;
5079
5080         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5081                 channel_type = nla_get_u32(
5082                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5083                 if (channel_type != NL80211_CHAN_NO_HT &&
5084                     channel_type != NL80211_CHAN_HT20 &&
5085                     channel_type != NL80211_CHAN_HT40PLUS &&
5086                     channel_type != NL80211_CHAN_HT40MINUS)
5087                         return -EINVAL;
5088         }
5089
5090         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5091         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5092         if (chan == NULL)
5093                 return -EINVAL;
5094
5095         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5096         if (!msg)
5097                 return -ENOMEM;
5098
5099         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5100                              NL80211_CMD_REMAIN_ON_CHANNEL);
5101
5102         if (IS_ERR(hdr)) {
5103                 err = PTR_ERR(hdr);
5104                 goto free_msg;
5105         }
5106
5107         err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5108                                            channel_type, duration, &cookie);
5109
5110         if (err)
5111                 goto free_msg;
5112
5113         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5114
5115         genlmsg_end(msg, hdr);
5116
5117         return genlmsg_reply(msg, info);
5118
5119  nla_put_failure:
5120         err = -ENOBUFS;
5121  free_msg:
5122         nlmsg_free(msg);
5123         return err;
5124 }
5125
5126 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5127                                             struct genl_info *info)
5128 {
5129         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5130         struct net_device *dev = info->user_ptr[1];
5131         u64 cookie;
5132
5133         if (!info->attrs[NL80211_ATTR_COOKIE])
5134                 return -EINVAL;
5135
5136         if (!rdev->ops->cancel_remain_on_channel)
5137                 return -EOPNOTSUPP;
5138
5139         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5140
5141         return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5142 }
5143
5144 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5145                            u8 *rates, u8 rates_len)
5146 {
5147         u8 i;
5148         u32 mask = 0;
5149
5150         for (i = 0; i < rates_len; i++) {
5151                 int rate = (rates[i] & 0x7f) * 5;
5152                 int ridx;
5153                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5154                         struct ieee80211_rate *srate =
5155                                 &sband->bitrates[ridx];
5156                         if (rate == srate->bitrate) {
5157                                 mask |= 1 << ridx;
5158                                 break;
5159                         }
5160                 }
5161                 if (ridx == sband->n_bitrates)
5162                         return 0; /* rate not found */
5163         }
5164
5165         return mask;
5166 }
5167
5168 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5169         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5170                                     .len = NL80211_MAX_SUPP_RATES },
5171 };
5172
5173 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5174                                        struct genl_info *info)
5175 {
5176         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5177         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5178         struct cfg80211_bitrate_mask mask;
5179         int rem, i;
5180         struct net_device *dev = info->user_ptr[1];
5181         struct nlattr *tx_rates;
5182         struct ieee80211_supported_band *sband;
5183
5184         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5185                 return -EINVAL;
5186
5187         if (!rdev->ops->set_bitrate_mask)
5188                 return -EOPNOTSUPP;
5189
5190         memset(&mask, 0, sizeof(mask));
5191         /* Default to all rates enabled */
5192         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5193                 sband = rdev->wiphy.bands[i];
5194                 mask.control[i].legacy =
5195                         sband ? (1 << sband->n_bitrates) - 1 : 0;
5196         }
5197
5198         /*
5199          * The nested attribute uses enum nl80211_band as the index. This maps
5200          * directly to the enum ieee80211_band values used in cfg80211.
5201          */
5202         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5203         {
5204                 enum ieee80211_band band = nla_type(tx_rates);
5205                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5206                         return -EINVAL;
5207                 sband = rdev->wiphy.bands[band];
5208                 if (sband == NULL)
5209                         return -EINVAL;
5210                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5211                           nla_len(tx_rates), nl80211_txattr_policy);
5212                 if (tb[NL80211_TXRATE_LEGACY]) {
5213                         mask.control[band].legacy = rateset_to_mask(
5214                                 sband,
5215                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5216                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5217                         if (mask.control[band].legacy == 0)
5218                                 return -EINVAL;
5219                 }
5220         }
5221
5222         return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5223 }
5224
5225 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5226 {
5227         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5228         struct net_device *dev = info->user_ptr[1];
5229         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5230
5231         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5232                 return -EINVAL;
5233
5234         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5235                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5236
5237         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5238             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5239             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5240             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5241             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5242             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5243             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5244                 return -EOPNOTSUPP;
5245
5246         /* not much point in registering if we can't reply */
5247         if (!rdev->ops->mgmt_tx)
5248                 return -EOPNOTSUPP;
5249
5250         return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5251                         frame_type,
5252                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5253                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5254 }
5255
5256 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5257 {
5258         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5259         struct net_device *dev = info->user_ptr[1];
5260         struct ieee80211_channel *chan;
5261         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5262         bool channel_type_valid = false;
5263         u32 freq;
5264         int err;
5265         void *hdr;
5266         u64 cookie;
5267         struct sk_buff *msg;
5268         unsigned int wait = 0;
5269         bool offchan;
5270         bool no_cck;
5271
5272         if (!info->attrs[NL80211_ATTR_FRAME] ||
5273             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5274                 return -EINVAL;
5275
5276         if (!rdev->ops->mgmt_tx)
5277                 return -EOPNOTSUPP;
5278
5279         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5280             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5281             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5282             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5283             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5284             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5285             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5286                 return -EOPNOTSUPP;
5287
5288         if (info->attrs[NL80211_ATTR_DURATION]) {
5289                 if (!rdev->ops->mgmt_tx_cancel_wait)
5290                         return -EINVAL;
5291                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5292         }
5293
5294         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5295                 channel_type = nla_get_u32(
5296                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5297                 if (channel_type != NL80211_CHAN_NO_HT &&
5298                     channel_type != NL80211_CHAN_HT20 &&
5299                     channel_type != NL80211_CHAN_HT40PLUS &&
5300                     channel_type != NL80211_CHAN_HT40MINUS)
5301                         return -EINVAL;
5302                 channel_type_valid = true;
5303         }
5304
5305         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5306
5307         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5308
5309         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5310         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5311         if (chan == NULL)
5312                 return -EINVAL;
5313
5314         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5315         if (!msg)
5316                 return -ENOMEM;
5317
5318         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5319                              NL80211_CMD_FRAME);
5320
5321         if (IS_ERR(hdr)) {
5322                 err = PTR_ERR(hdr);
5323                 goto free_msg;
5324         }
5325         err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5326                                     channel_type_valid, wait,
5327                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
5328                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
5329                                     no_cck, &cookie);
5330         if (err)
5331                 goto free_msg;
5332
5333         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5334
5335         genlmsg_end(msg, hdr);
5336         return genlmsg_reply(msg, info);
5337
5338  nla_put_failure:
5339         err = -ENOBUFS;
5340  free_msg:
5341         nlmsg_free(msg);
5342         return err;
5343 }
5344
5345 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5346 {
5347         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5348         struct net_device *dev = info->user_ptr[1];
5349         u64 cookie;
5350
5351         if (!info->attrs[NL80211_ATTR_COOKIE])
5352                 return -EINVAL;
5353
5354         if (!rdev->ops->mgmt_tx_cancel_wait)
5355                 return -EOPNOTSUPP;
5356
5357         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5358             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5359             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5360             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5361             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5362             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5363                 return -EOPNOTSUPP;
5364
5365         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5366
5367         return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5368 }
5369
5370 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5371 {
5372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5373         struct wireless_dev *wdev;
5374         struct net_device *dev = info->user_ptr[1];
5375         u8 ps_state;
5376         bool state;
5377         int err;
5378
5379         if (!info->attrs[NL80211_ATTR_PS_STATE])
5380                 return -EINVAL;
5381
5382         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5383
5384         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5385                 return -EINVAL;
5386
5387         wdev = dev->ieee80211_ptr;
5388
5389         if (!rdev->ops->set_power_mgmt)
5390                 return -EOPNOTSUPP;
5391
5392         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5393
5394         if (state == wdev->ps)
5395                 return 0;
5396
5397         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5398                                         wdev->ps_timeout);
5399         if (!err)
5400                 wdev->ps = state;
5401         return err;
5402 }
5403
5404 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5405 {
5406         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5407         enum nl80211_ps_state ps_state;
5408         struct wireless_dev *wdev;
5409         struct net_device *dev = info->user_ptr[1];
5410         struct sk_buff *msg;
5411         void *hdr;
5412         int err;
5413
5414         wdev = dev->ieee80211_ptr;
5415
5416         if (!rdev->ops->set_power_mgmt)
5417                 return -EOPNOTSUPP;
5418
5419         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5420         if (!msg)
5421                 return -ENOMEM;
5422
5423         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5424                              NL80211_CMD_GET_POWER_SAVE);
5425         if (!hdr) {
5426                 err = -ENOBUFS;
5427                 goto free_msg;
5428         }
5429
5430         if (wdev->ps)
5431                 ps_state = NL80211_PS_ENABLED;
5432         else
5433                 ps_state = NL80211_PS_DISABLED;
5434
5435         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5436
5437         genlmsg_end(msg, hdr);
5438         return genlmsg_reply(msg, info);
5439
5440  nla_put_failure:
5441         err = -ENOBUFS;
5442  free_msg:
5443         nlmsg_free(msg);
5444         return err;
5445 }
5446
5447 static struct nla_policy
5448 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5449         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5450         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5451         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5452 };
5453
5454 static int nl80211_set_cqm_rssi(struct genl_info *info,
5455                                 s32 threshold, u32 hysteresis)
5456 {
5457         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5458         struct wireless_dev *wdev;
5459         struct net_device *dev = info->user_ptr[1];
5460
5461         if (threshold > 0)
5462                 return -EINVAL;
5463
5464         wdev = dev->ieee80211_ptr;
5465
5466         if (!rdev->ops->set_cqm_rssi_config)
5467                 return -EOPNOTSUPP;
5468
5469         if (wdev->iftype != NL80211_IFTYPE_STATION &&
5470             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5471                 return -EOPNOTSUPP;
5472
5473         return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5474                                               threshold, hysteresis);
5475 }
5476
5477 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5478 {
5479         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5480         struct nlattr *cqm;
5481         int err;
5482
5483         cqm = info->attrs[NL80211_ATTR_CQM];
5484         if (!cqm) {
5485                 err = -EINVAL;
5486                 goto out;
5487         }
5488
5489         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5490                                nl80211_attr_cqm_policy);
5491         if (err)
5492                 goto out;
5493
5494         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5495             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5496                 s32 threshold;
5497                 u32 hysteresis;
5498                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5499                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5500                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5501         } else
5502                 err = -EINVAL;
5503
5504 out:
5505         return err;
5506 }
5507
5508 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5509 {
5510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5511         struct net_device *dev = info->user_ptr[1];
5512         struct mesh_config cfg;
5513         struct mesh_setup setup;
5514         int err;
5515
5516         /* start with default */
5517         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5518         memcpy(&setup, &default_mesh_setup, sizeof(setup));
5519
5520         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5521                 /* and parse parameters if given */
5522                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5523                 if (err)
5524                         return err;
5525         }
5526
5527         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5528             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5529                 return -EINVAL;
5530
5531         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5532         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5533
5534         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5535                 /* parse additional setup parameters if given */
5536                 err = nl80211_parse_mesh_setup(info, &setup);
5537                 if (err)
5538                         return err;
5539         }
5540
5541         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5542 }
5543
5544 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5545 {
5546         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5547         struct net_device *dev = info->user_ptr[1];
5548
5549         return cfg80211_leave_mesh(rdev, dev);
5550 }
5551
5552 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5553 {
5554         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5555         struct sk_buff *msg;
5556         void *hdr;
5557
5558         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5559                 return -EOPNOTSUPP;
5560
5561         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5562         if (!msg)
5563                 return -ENOMEM;
5564
5565         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5566                              NL80211_CMD_GET_WOWLAN);
5567         if (!hdr)
5568                 goto nla_put_failure;
5569
5570         if (rdev->wowlan) {
5571                 struct nlattr *nl_wowlan;
5572
5573                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5574                 if (!nl_wowlan)
5575                         goto nla_put_failure;
5576
5577                 if (rdev->wowlan->any)
5578                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5579                 if (rdev->wowlan->disconnect)
5580                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5581                 if (rdev->wowlan->magic_pkt)
5582                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5583                 if (rdev->wowlan->gtk_rekey_failure)
5584                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5585                 if (rdev->wowlan->eap_identity_req)
5586                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5587                 if (rdev->wowlan->four_way_handshake)
5588                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5589                 if (rdev->wowlan->rfkill_release)
5590                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5591                 if (rdev->wowlan->n_patterns) {
5592                         struct nlattr *nl_pats, *nl_pat;
5593                         int i, pat_len;
5594
5595                         nl_pats = nla_nest_start(msg,
5596                                         NL80211_WOWLAN_TRIG_PKT_PATTERN);
5597                         if (!nl_pats)
5598                                 goto nla_put_failure;
5599
5600                         for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5601                                 nl_pat = nla_nest_start(msg, i + 1);
5602                                 if (!nl_pat)
5603                                         goto nla_put_failure;
5604                                 pat_len = rdev->wowlan->patterns[i].pattern_len;
5605                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5606                                         DIV_ROUND_UP(pat_len, 8),
5607                                         rdev->wowlan->patterns[i].mask);
5608                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5609                                         pat_len,
5610                                         rdev->wowlan->patterns[i].pattern);
5611                                 nla_nest_end(msg, nl_pat);
5612                         }
5613                         nla_nest_end(msg, nl_pats);
5614                 }
5615
5616                 nla_nest_end(msg, nl_wowlan);
5617         }
5618
5619         genlmsg_end(msg, hdr);
5620         return genlmsg_reply(msg, info);
5621
5622 nla_put_failure:
5623         nlmsg_free(msg);
5624         return -ENOBUFS;
5625 }
5626
5627 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5628 {
5629         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5630         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5631         struct cfg80211_wowlan no_triggers = {};
5632         struct cfg80211_wowlan new_triggers = {};
5633         struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5634         int err, i;
5635
5636         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5637                 return -EOPNOTSUPP;
5638
5639         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5640                 goto no_triggers;
5641
5642         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5643                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5644                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5645                         nl80211_wowlan_policy);
5646         if (err)
5647                 return err;
5648
5649         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5650                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5651                         return -EINVAL;
5652                 new_triggers.any = true;
5653         }
5654
5655         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5656                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5657                         return -EINVAL;
5658                 new_triggers.disconnect = true;
5659         }
5660
5661         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5662                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5663                         return -EINVAL;
5664                 new_triggers.magic_pkt = true;
5665         }
5666
5667         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5668                 return -EINVAL;
5669
5670         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5671                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5672                         return -EINVAL;
5673                 new_triggers.gtk_rekey_failure = true;
5674         }
5675
5676         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5677                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5678                         return -EINVAL;
5679                 new_triggers.eap_identity_req = true;
5680         }
5681
5682         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5683                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5684                         return -EINVAL;
5685                 new_triggers.four_way_handshake = true;
5686         }
5687
5688         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5689                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5690                         return -EINVAL;
5691                 new_triggers.rfkill_release = true;
5692         }
5693
5694         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5695                 struct nlattr *pat;
5696                 int n_patterns = 0;
5697                 int rem, pat_len, mask_len;
5698                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5699
5700                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5701                                     rem)
5702                         n_patterns++;
5703                 if (n_patterns > wowlan->n_patterns)
5704                         return -EINVAL;
5705
5706                 new_triggers.patterns = kcalloc(n_patterns,
5707                                                 sizeof(new_triggers.patterns[0]),
5708                                                 GFP_KERNEL);
5709                 if (!new_triggers.patterns)
5710                         return -ENOMEM;
5711
5712                 new_triggers.n_patterns = n_patterns;
5713                 i = 0;
5714
5715                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5716                                     rem) {
5717                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5718                                   nla_data(pat), nla_len(pat), NULL);
5719                         err = -EINVAL;
5720                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5721                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5722                                 goto error;
5723                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5724                         mask_len = DIV_ROUND_UP(pat_len, 8);
5725                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5726                             mask_len)
5727                                 goto error;
5728                         if (pat_len > wowlan->pattern_max_len ||
5729                             pat_len < wowlan->pattern_min_len)
5730                                 goto error;
5731
5732                         new_triggers.patterns[i].mask =
5733                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
5734                         if (!new_triggers.patterns[i].mask) {
5735                                 err = -ENOMEM;
5736                                 goto error;
5737                         }
5738                         new_triggers.patterns[i].pattern =
5739                                 new_triggers.patterns[i].mask + mask_len;
5740                         memcpy(new_triggers.patterns[i].mask,
5741                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5742                                mask_len);
5743                         new_triggers.patterns[i].pattern_len = pat_len;
5744                         memcpy(new_triggers.patterns[i].pattern,
5745                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5746                                pat_len);
5747                         i++;
5748                 }
5749         }
5750
5751         if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5752                 struct cfg80211_wowlan *ntrig;
5753                 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5754                                 GFP_KERNEL);
5755                 if (!ntrig) {
5756                         err = -ENOMEM;
5757                         goto error;
5758                 }
5759                 cfg80211_rdev_free_wowlan(rdev);
5760                 rdev->wowlan = ntrig;
5761         } else {
5762  no_triggers:
5763                 cfg80211_rdev_free_wowlan(rdev);
5764                 rdev->wowlan = NULL;
5765         }
5766
5767         return 0;
5768  error:
5769         for (i = 0; i < new_triggers.n_patterns; i++)
5770                 kfree(new_triggers.patterns[i].mask);
5771         kfree(new_triggers.patterns);
5772         return err;
5773 }
5774
5775 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5776 {
5777         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5778         struct net_device *dev = info->user_ptr[1];
5779         struct wireless_dev *wdev = dev->ieee80211_ptr;
5780         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5781         struct cfg80211_gtk_rekey_data rekey_data;
5782         int err;
5783
5784         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5785                 return -EINVAL;
5786
5787         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5788                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5789                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5790                         nl80211_rekey_policy);
5791         if (err)
5792                 return err;
5793
5794         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5795                 return -ERANGE;
5796         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5797                 return -ERANGE;
5798         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5799                 return -ERANGE;
5800
5801         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5802                NL80211_KEK_LEN);
5803         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5804                NL80211_KCK_LEN);
5805         memcpy(rekey_data.replay_ctr,
5806                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5807                NL80211_REPLAY_CTR_LEN);
5808
5809         wdev_lock(wdev);
5810         if (!wdev->current_bss) {
5811                 err = -ENOTCONN;
5812                 goto out;
5813         }
5814
5815         if (!rdev->ops->set_rekey_data) {
5816                 err = -EOPNOTSUPP;
5817                 goto out;
5818         }
5819
5820         err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5821  out:
5822         wdev_unlock(wdev);
5823         return err;
5824 }
5825
5826 #define NL80211_FLAG_NEED_WIPHY         0x01
5827 #define NL80211_FLAG_NEED_NETDEV        0x02
5828 #define NL80211_FLAG_NEED_RTNL          0x04
5829 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
5830 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
5831                                          NL80211_FLAG_CHECK_NETDEV_UP)
5832
5833 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5834                             struct genl_info *info)
5835 {
5836         struct cfg80211_registered_device *rdev;
5837         struct net_device *dev;
5838         int err;
5839         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5840
5841         if (rtnl)
5842                 rtnl_lock();
5843
5844         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5845                 rdev = cfg80211_get_dev_from_info(info);
5846                 if (IS_ERR(rdev)) {
5847                         if (rtnl)
5848                                 rtnl_unlock();
5849                         return PTR_ERR(rdev);
5850                 }
5851                 info->user_ptr[0] = rdev;
5852         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5853                 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5854                 if (err) {
5855                         if (rtnl)
5856                                 rtnl_unlock();
5857                         return err;
5858                 }
5859                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5860                     !netif_running(dev)) {
5861                         cfg80211_unlock_rdev(rdev);
5862                         dev_put(dev);
5863                         if (rtnl)
5864                                 rtnl_unlock();
5865                         return -ENETDOWN;
5866                 }
5867                 info->user_ptr[0] = rdev;
5868                 info->user_ptr[1] = dev;
5869         }
5870
5871         return 0;
5872 }
5873
5874 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5875                               struct genl_info *info)
5876 {
5877         if (info->user_ptr[0])
5878                 cfg80211_unlock_rdev(info->user_ptr[0]);
5879         if (info->user_ptr[1])
5880                 dev_put(info->user_ptr[1]);
5881         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5882                 rtnl_unlock();
5883 }
5884
5885 static struct genl_ops nl80211_ops[] = {
5886         {
5887                 .cmd = NL80211_CMD_GET_WIPHY,
5888                 .doit = nl80211_get_wiphy,
5889                 .dumpit = nl80211_dump_wiphy,
5890                 .policy = nl80211_policy,
5891                 /* can be retrieved by unprivileged users */
5892                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5893         },
5894         {
5895                 .cmd = NL80211_CMD_SET_WIPHY,
5896                 .doit = nl80211_set_wiphy,
5897                 .policy = nl80211_policy,
5898                 .flags = GENL_ADMIN_PERM,
5899                 .internal_flags = NL80211_FLAG_NEED_RTNL,
5900         },
5901         {
5902                 .cmd = NL80211_CMD_GET_INTERFACE,
5903                 .doit = nl80211_get_interface,
5904                 .dumpit = nl80211_dump_interface,
5905                 .policy = nl80211_policy,
5906                 /* can be retrieved by unprivileged users */
5907                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5908         },
5909         {
5910                 .cmd = NL80211_CMD_SET_INTERFACE,
5911                 .doit = nl80211_set_interface,
5912                 .policy = nl80211_policy,
5913                 .flags = GENL_ADMIN_PERM,
5914                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5915                                   NL80211_FLAG_NEED_RTNL,
5916         },
5917         {
5918                 .cmd = NL80211_CMD_NEW_INTERFACE,
5919                 .doit = nl80211_new_interface,
5920                 .policy = nl80211_policy,
5921                 .flags = GENL_ADMIN_PERM,
5922                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5923                                   NL80211_FLAG_NEED_RTNL,
5924         },
5925         {
5926                 .cmd = NL80211_CMD_DEL_INTERFACE,
5927                 .doit = nl80211_del_interface,
5928                 .policy = nl80211_policy,
5929                 .flags = GENL_ADMIN_PERM,
5930                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5931                                   NL80211_FLAG_NEED_RTNL,
5932         },
5933         {
5934                 .cmd = NL80211_CMD_GET_KEY,
5935                 .doit = nl80211_get_key,
5936                 .policy = nl80211_policy,
5937                 .flags = GENL_ADMIN_PERM,
5938                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5939                                   NL80211_FLAG_NEED_RTNL,
5940         },
5941         {
5942                 .cmd = NL80211_CMD_SET_KEY,
5943                 .doit = nl80211_set_key,
5944                 .policy = nl80211_policy,
5945                 .flags = GENL_ADMIN_PERM,
5946                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5947                                   NL80211_FLAG_NEED_RTNL,
5948         },
5949         {
5950                 .cmd = NL80211_CMD_NEW_KEY,
5951                 .doit = nl80211_new_key,
5952                 .policy = nl80211_policy,
5953                 .flags = GENL_ADMIN_PERM,
5954                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5955                                   NL80211_FLAG_NEED_RTNL,
5956         },
5957         {
5958                 .cmd = NL80211_CMD_DEL_KEY,
5959                 .doit = nl80211_del_key,
5960                 .policy = nl80211_policy,
5961                 .flags = GENL_ADMIN_PERM,
5962                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5963                                   NL80211_FLAG_NEED_RTNL,
5964         },
5965         {
5966                 .cmd = NL80211_CMD_SET_BEACON,
5967                 .policy = nl80211_policy,
5968                 .flags = GENL_ADMIN_PERM,
5969                 .doit = nl80211_addset_beacon,
5970                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5971                                   NL80211_FLAG_NEED_RTNL,
5972         },
5973         {
5974                 .cmd = NL80211_CMD_NEW_BEACON,
5975                 .policy = nl80211_policy,
5976                 .flags = GENL_ADMIN_PERM,
5977                 .doit = nl80211_addset_beacon,
5978                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5979                                   NL80211_FLAG_NEED_RTNL,
5980         },
5981         {
5982                 .cmd = NL80211_CMD_DEL_BEACON,
5983                 .policy = nl80211_policy,
5984                 .flags = GENL_ADMIN_PERM,
5985                 .doit = nl80211_del_beacon,
5986                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5987                                   NL80211_FLAG_NEED_RTNL,
5988         },
5989         {
5990                 .cmd = NL80211_CMD_GET_STATION,
5991                 .doit = nl80211_get_station,
5992                 .dumpit = nl80211_dump_station,
5993                 .policy = nl80211_policy,
5994                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5995                                   NL80211_FLAG_NEED_RTNL,
5996         },
5997         {
5998                 .cmd = NL80211_CMD_SET_STATION,
5999                 .doit = nl80211_set_station,
6000                 .policy = nl80211_policy,
6001                 .flags = GENL_ADMIN_PERM,
6002                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6003                                   NL80211_FLAG_NEED_RTNL,
6004         },
6005         {
6006                 .cmd = NL80211_CMD_NEW_STATION,
6007                 .doit = nl80211_new_station,
6008                 .policy = nl80211_policy,
6009                 .flags = GENL_ADMIN_PERM,
6010                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6011                                   NL80211_FLAG_NEED_RTNL,
6012         },
6013         {
6014                 .cmd = NL80211_CMD_DEL_STATION,
6015                 .doit = nl80211_del_station,
6016                 .policy = nl80211_policy,
6017                 .flags = GENL_ADMIN_PERM,
6018                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6019                                   NL80211_FLAG_NEED_RTNL,
6020         },
6021         {
6022                 .cmd = NL80211_CMD_GET_MPATH,
6023                 .doit = nl80211_get_mpath,
6024                 .dumpit = nl80211_dump_mpath,
6025                 .policy = nl80211_policy,
6026                 .flags = GENL_ADMIN_PERM,
6027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6028                                   NL80211_FLAG_NEED_RTNL,
6029         },
6030         {
6031                 .cmd = NL80211_CMD_SET_MPATH,
6032                 .doit = nl80211_set_mpath,
6033                 .policy = nl80211_policy,
6034                 .flags = GENL_ADMIN_PERM,
6035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6036                                   NL80211_FLAG_NEED_RTNL,
6037         },
6038         {
6039                 .cmd = NL80211_CMD_NEW_MPATH,
6040                 .doit = nl80211_new_mpath,
6041                 .policy = nl80211_policy,
6042                 .flags = GENL_ADMIN_PERM,
6043                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6044                                   NL80211_FLAG_NEED_RTNL,
6045         },
6046         {
6047                 .cmd = NL80211_CMD_DEL_MPATH,
6048                 .doit = nl80211_del_mpath,
6049                 .policy = nl80211_policy,
6050                 .flags = GENL_ADMIN_PERM,
6051                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6052                                   NL80211_FLAG_NEED_RTNL,
6053         },
6054         {
6055                 .cmd = NL80211_CMD_SET_BSS,
6056                 .doit = nl80211_set_bss,
6057                 .policy = nl80211_policy,
6058                 .flags = GENL_ADMIN_PERM,
6059                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6060                                   NL80211_FLAG_NEED_RTNL,
6061         },
6062         {
6063                 .cmd = NL80211_CMD_GET_REG,
6064                 .doit = nl80211_get_reg,
6065                 .policy = nl80211_policy,
6066                 /* can be retrieved by unprivileged users */
6067         },
6068         {
6069                 .cmd = NL80211_CMD_SET_REG,
6070                 .doit = nl80211_set_reg,
6071                 .policy = nl80211_policy,
6072                 .flags = GENL_ADMIN_PERM,
6073         },
6074         {
6075                 .cmd = NL80211_CMD_REQ_SET_REG,
6076                 .doit = nl80211_req_set_reg,
6077                 .policy = nl80211_policy,
6078                 .flags = GENL_ADMIN_PERM,
6079         },
6080         {
6081                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6082                 .doit = nl80211_get_mesh_config,
6083                 .policy = nl80211_policy,
6084                 /* can be retrieved by unprivileged users */
6085                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6086                                   NL80211_FLAG_NEED_RTNL,
6087         },
6088         {
6089                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6090                 .doit = nl80211_update_mesh_config,
6091                 .policy = nl80211_policy,
6092                 .flags = GENL_ADMIN_PERM,
6093                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6094                                   NL80211_FLAG_NEED_RTNL,
6095         },
6096         {
6097                 .cmd = NL80211_CMD_TRIGGER_SCAN,
6098                 .doit = nl80211_trigger_scan,
6099                 .policy = nl80211_policy,
6100                 .flags = GENL_ADMIN_PERM,
6101                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6102                                   NL80211_FLAG_NEED_RTNL,
6103         },
6104         {
6105                 .cmd = NL80211_CMD_GET_SCAN,
6106                 .policy = nl80211_policy,
6107                 .dumpit = nl80211_dump_scan,
6108         },
6109         {
6110                 .cmd = NL80211_CMD_START_SCHED_SCAN,
6111                 .doit = nl80211_start_sched_scan,
6112                 .policy = nl80211_policy,
6113                 .flags = GENL_ADMIN_PERM,
6114                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6115                                   NL80211_FLAG_NEED_RTNL,
6116         },
6117         {
6118                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6119                 .doit = nl80211_stop_sched_scan,
6120                 .policy = nl80211_policy,
6121                 .flags = GENL_ADMIN_PERM,
6122                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6123                                   NL80211_FLAG_NEED_RTNL,
6124         },
6125         {
6126                 .cmd = NL80211_CMD_AUTHENTICATE,
6127                 .doit = nl80211_authenticate,
6128                 .policy = nl80211_policy,
6129                 .flags = GENL_ADMIN_PERM,
6130                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6131                                   NL80211_FLAG_NEED_RTNL,
6132         },
6133         {
6134                 .cmd = NL80211_CMD_ASSOCIATE,
6135                 .doit = nl80211_associate,
6136                 .policy = nl80211_policy,
6137                 .flags = GENL_ADMIN_PERM,
6138                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6139                                   NL80211_FLAG_NEED_RTNL,
6140         },
6141         {
6142                 .cmd = NL80211_CMD_DEAUTHENTICATE,
6143                 .doit = nl80211_deauthenticate,
6144                 .policy = nl80211_policy,
6145                 .flags = GENL_ADMIN_PERM,
6146                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6147                                   NL80211_FLAG_NEED_RTNL,
6148         },
6149         {
6150                 .cmd = NL80211_CMD_DISASSOCIATE,
6151                 .doit = nl80211_disassociate,
6152                 .policy = nl80211_policy,
6153                 .flags = GENL_ADMIN_PERM,
6154                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6155                                   NL80211_FLAG_NEED_RTNL,
6156         },
6157         {
6158                 .cmd = NL80211_CMD_JOIN_IBSS,
6159                 .doit = nl80211_join_ibss,
6160                 .policy = nl80211_policy,
6161                 .flags = GENL_ADMIN_PERM,
6162                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6163                                   NL80211_FLAG_NEED_RTNL,
6164         },
6165         {
6166                 .cmd = NL80211_CMD_LEAVE_IBSS,
6167                 .doit = nl80211_leave_ibss,
6168                 .policy = nl80211_policy,
6169                 .flags = GENL_ADMIN_PERM,
6170                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6171                                   NL80211_FLAG_NEED_RTNL,
6172         },
6173 #ifdef CONFIG_NL80211_TESTMODE
6174         {
6175                 .cmd = NL80211_CMD_TESTMODE,
6176                 .doit = nl80211_testmode_do,
6177                 .dumpit = nl80211_testmode_dump,
6178                 .policy = nl80211_policy,
6179                 .flags = GENL_ADMIN_PERM,
6180                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6181                                   NL80211_FLAG_NEED_RTNL,
6182         },
6183 #endif
6184         {
6185                 .cmd = NL80211_CMD_CONNECT,
6186                 .doit = nl80211_connect,
6187                 .policy = nl80211_policy,
6188                 .flags = GENL_ADMIN_PERM,
6189                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6190                                   NL80211_FLAG_NEED_RTNL,
6191         },
6192         {
6193                 .cmd = NL80211_CMD_DISCONNECT,
6194                 .doit = nl80211_disconnect,
6195                 .policy = nl80211_policy,
6196                 .flags = GENL_ADMIN_PERM,
6197                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6198                                   NL80211_FLAG_NEED_RTNL,
6199         },
6200         {
6201                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6202                 .doit = nl80211_wiphy_netns,
6203                 .policy = nl80211_policy,
6204                 .flags = GENL_ADMIN_PERM,
6205                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6206                                   NL80211_FLAG_NEED_RTNL,
6207         },
6208         {
6209                 .cmd = NL80211_CMD_GET_SURVEY,
6210                 .policy = nl80211_policy,
6211                 .dumpit = nl80211_dump_survey,
6212         },
6213         {
6214                 .cmd = NL80211_CMD_SET_PMKSA,
6215                 .doit = nl80211_setdel_pmksa,
6216                 .policy = nl80211_policy,
6217                 .flags = GENL_ADMIN_PERM,
6218                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6219                                   NL80211_FLAG_NEED_RTNL,
6220         },
6221         {
6222                 .cmd = NL80211_CMD_DEL_PMKSA,
6223                 .doit = nl80211_setdel_pmksa,
6224                 .policy = nl80211_policy,
6225                 .flags = GENL_ADMIN_PERM,
6226                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6227                                   NL80211_FLAG_NEED_RTNL,
6228         },
6229         {
6230                 .cmd = NL80211_CMD_FLUSH_PMKSA,
6231                 .doit = nl80211_flush_pmksa,
6232                 .policy = nl80211_policy,
6233                 .flags = GENL_ADMIN_PERM,
6234                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6235                                   NL80211_FLAG_NEED_RTNL,
6236         },
6237         {
6238                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6239                 .doit = nl80211_remain_on_channel,
6240                 .policy = nl80211_policy,
6241                 .flags = GENL_ADMIN_PERM,
6242                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6243                                   NL80211_FLAG_NEED_RTNL,
6244         },
6245         {
6246                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6247                 .doit = nl80211_cancel_remain_on_channel,
6248                 .policy = nl80211_policy,
6249                 .flags = GENL_ADMIN_PERM,
6250                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6251                                   NL80211_FLAG_NEED_RTNL,
6252         },
6253         {
6254                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6255                 .doit = nl80211_set_tx_bitrate_mask,
6256                 .policy = nl80211_policy,
6257                 .flags = GENL_ADMIN_PERM,
6258                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6259                                   NL80211_FLAG_NEED_RTNL,
6260         },
6261         {
6262                 .cmd = NL80211_CMD_REGISTER_FRAME,
6263                 .doit = nl80211_register_mgmt,
6264                 .policy = nl80211_policy,
6265                 .flags = GENL_ADMIN_PERM,
6266                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6267                                   NL80211_FLAG_NEED_RTNL,
6268         },
6269         {
6270                 .cmd = NL80211_CMD_FRAME,
6271                 .doit = nl80211_tx_mgmt,
6272                 .policy = nl80211_policy,
6273                 .flags = GENL_ADMIN_PERM,
6274                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6275                                   NL80211_FLAG_NEED_RTNL,
6276         },
6277         {
6278                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6279                 .doit = nl80211_tx_mgmt_cancel_wait,
6280                 .policy = nl80211_policy,
6281                 .flags = GENL_ADMIN_PERM,
6282                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6283                                   NL80211_FLAG_NEED_RTNL,
6284         },
6285         {
6286                 .cmd = NL80211_CMD_SET_POWER_SAVE,
6287                 .doit = nl80211_set_power_save,
6288                 .policy = nl80211_policy,
6289                 .flags = GENL_ADMIN_PERM,
6290                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6291                                   NL80211_FLAG_NEED_RTNL,
6292         },
6293         {
6294                 .cmd = NL80211_CMD_GET_POWER_SAVE,
6295                 .doit = nl80211_get_power_save,
6296                 .policy = nl80211_policy,
6297                 /* can be retrieved by unprivileged users */
6298                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6299                                   NL80211_FLAG_NEED_RTNL,
6300         },
6301         {
6302                 .cmd = NL80211_CMD_SET_CQM,
6303                 .doit = nl80211_set_cqm,
6304                 .policy = nl80211_policy,
6305                 .flags = GENL_ADMIN_PERM,
6306                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6307                                   NL80211_FLAG_NEED_RTNL,
6308         },
6309         {
6310                 .cmd = NL80211_CMD_SET_CHANNEL,
6311                 .doit = nl80211_set_channel,
6312                 .policy = nl80211_policy,
6313                 .flags = GENL_ADMIN_PERM,
6314                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6315                                   NL80211_FLAG_NEED_RTNL,
6316         },
6317         {
6318                 .cmd = NL80211_CMD_SET_WDS_PEER,
6319                 .doit = nl80211_set_wds_peer,
6320                 .policy = nl80211_policy,
6321                 .flags = GENL_ADMIN_PERM,
6322                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6323                                   NL80211_FLAG_NEED_RTNL,
6324         },
6325         {
6326                 .cmd = NL80211_CMD_JOIN_MESH,
6327                 .doit = nl80211_join_mesh,
6328                 .policy = nl80211_policy,
6329                 .flags = GENL_ADMIN_PERM,
6330                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6331                                   NL80211_FLAG_NEED_RTNL,
6332         },
6333         {
6334                 .cmd = NL80211_CMD_LEAVE_MESH,
6335                 .doit = nl80211_leave_mesh,
6336                 .policy = nl80211_policy,
6337                 .flags = GENL_ADMIN_PERM,
6338                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6339                                   NL80211_FLAG_NEED_RTNL,
6340         },
6341         {
6342                 .cmd = NL80211_CMD_GET_WOWLAN,
6343                 .doit = nl80211_get_wowlan,
6344                 .policy = nl80211_policy,
6345                 /* can be retrieved by unprivileged users */
6346                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6347                                   NL80211_FLAG_NEED_RTNL,
6348         },
6349         {
6350                 .cmd = NL80211_CMD_SET_WOWLAN,
6351                 .doit = nl80211_set_wowlan,
6352                 .policy = nl80211_policy,
6353                 .flags = GENL_ADMIN_PERM,
6354                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6355                                   NL80211_FLAG_NEED_RTNL,
6356         },
6357         {
6358                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6359                 .doit = nl80211_set_rekey_data,
6360                 .policy = nl80211_policy,
6361                 .flags = GENL_ADMIN_PERM,
6362                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6363                                   NL80211_FLAG_NEED_RTNL,
6364         },
6365         {
6366                 .cmd = NL80211_CMD_TDLS_MGMT,
6367                 .doit = nl80211_tdls_mgmt,
6368                 .policy = nl80211_policy,
6369                 .flags = GENL_ADMIN_PERM,
6370                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6371                                   NL80211_FLAG_NEED_RTNL,
6372         },
6373         {
6374                 .cmd = NL80211_CMD_TDLS_OPER,
6375                 .doit = nl80211_tdls_oper,
6376                 .policy = nl80211_policy,
6377                 .flags = GENL_ADMIN_PERM,
6378                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6379                                   NL80211_FLAG_NEED_RTNL,
6380         },
6381 };
6382
6383 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6384         .name = "mlme",
6385 };
6386
6387 /* multicast groups */
6388 static struct genl_multicast_group nl80211_config_mcgrp = {
6389         .name = "config",
6390 };
6391 static struct genl_multicast_group nl80211_scan_mcgrp = {
6392         .name = "scan",
6393 };
6394 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6395         .name = "regulatory",
6396 };
6397
6398 /* notification functions */
6399
6400 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6401 {
6402         struct sk_buff *msg;
6403
6404         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6405         if (!msg)
6406                 return;
6407
6408         if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6409                 nlmsg_free(msg);
6410                 return;
6411         }
6412
6413         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6414                                 nl80211_config_mcgrp.id, GFP_KERNEL);
6415 }
6416
6417 static int nl80211_add_scan_req(struct sk_buff *msg,
6418                                 struct cfg80211_registered_device *rdev)
6419 {
6420         struct cfg80211_scan_request *req = rdev->scan_req;
6421         struct nlattr *nest;
6422         int i;
6423
6424         ASSERT_RDEV_LOCK(rdev);
6425
6426         if (WARN_ON(!req))
6427                 return 0;
6428
6429         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6430         if (!nest)
6431                 goto nla_put_failure;
6432         for (i = 0; i < req->n_ssids; i++)
6433                 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6434         nla_nest_end(msg, nest);
6435
6436         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6437         if (!nest)
6438                 goto nla_put_failure;
6439         for (i = 0; i < req->n_channels; i++)
6440                 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6441         nla_nest_end(msg, nest);
6442
6443         if (req->ie)
6444                 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6445
6446         return 0;
6447  nla_put_failure:
6448         return -ENOBUFS;
6449 }
6450
6451 static int nl80211_send_scan_msg(struct sk_buff *msg,
6452                                  struct cfg80211_registered_device *rdev,
6453                                  struct net_device *netdev,
6454                                  u32 pid, u32 seq, int flags,
6455                                  u32 cmd)
6456 {
6457         void *hdr;
6458
6459         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6460         if (!hdr)
6461                 return -1;
6462
6463         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6464         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6465
6466         /* ignore errors and send incomplete event anyway */
6467         nl80211_add_scan_req(msg, rdev);
6468
6469         return genlmsg_end(msg, hdr);
6470
6471  nla_put_failure:
6472         genlmsg_cancel(msg, hdr);
6473         return -EMSGSIZE;
6474 }
6475
6476 static int
6477 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6478                             struct cfg80211_registered_device *rdev,
6479                             struct net_device *netdev,
6480                             u32 pid, u32 seq, int flags, u32 cmd)
6481 {
6482         void *hdr;
6483
6484         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6485         if (!hdr)
6486                 return -1;
6487
6488         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6489         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6490
6491         return genlmsg_end(msg, hdr);
6492
6493  nla_put_failure:
6494         genlmsg_cancel(msg, hdr);
6495         return -EMSGSIZE;
6496 }
6497
6498 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6499                              struct net_device *netdev)
6500 {
6501         struct sk_buff *msg;
6502
6503         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6504         if (!msg)
6505                 return;
6506
6507         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6508                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
6509                 nlmsg_free(msg);
6510                 return;
6511         }
6512
6513         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6514                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6515 }
6516
6517 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6518                             struct net_device *netdev)
6519 {
6520         struct sk_buff *msg;
6521
6522         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6523         if (!msg)
6524                 return;
6525
6526         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6527                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6528                 nlmsg_free(msg);
6529                 return;
6530         }
6531
6532         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6533                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6534 }
6535
6536 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6537                                struct net_device *netdev)
6538 {
6539         struct sk_buff *msg;
6540
6541         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6542         if (!msg)
6543                 return;
6544
6545         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6546                                   NL80211_CMD_SCAN_ABORTED) < 0) {
6547                 nlmsg_free(msg);
6548                 return;
6549         }
6550
6551         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6552                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6553 }
6554
6555 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6556                                      struct net_device *netdev)
6557 {
6558         struct sk_buff *msg;
6559
6560         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6561         if (!msg)
6562                 return;
6563
6564         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6565                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6566                 nlmsg_free(msg);
6567                 return;
6568         }
6569
6570         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6571                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6572 }
6573
6574 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6575                              struct net_device *netdev, u32 cmd)
6576 {
6577         struct sk_buff *msg;
6578
6579         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6580         if (!msg)
6581                 return;
6582
6583         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6584                 nlmsg_free(msg);
6585                 return;
6586         }
6587
6588         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6589                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6590 }
6591
6592 /*
6593  * This can happen on global regulatory changes or device specific settings
6594  * based on custom world regulatory domains.
6595  */
6596 void nl80211_send_reg_change_event(struct regulatory_request *request)
6597 {
6598         struct sk_buff *msg;
6599         void *hdr;
6600
6601         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6602         if (!msg)
6603                 return;
6604
6605         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6606         if (!hdr) {
6607                 nlmsg_free(msg);
6608                 return;
6609         }
6610
6611         /* Userspace can always count this one always being set */
6612         NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6613
6614         if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6615                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6616                            NL80211_REGDOM_TYPE_WORLD);
6617         else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6618                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6619                            NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6620         else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6621                  request->intersect)
6622                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6623                            NL80211_REGDOM_TYPE_INTERSECTION);
6624         else {
6625                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6626                            NL80211_REGDOM_TYPE_COUNTRY);
6627                 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6628         }
6629
6630         if (wiphy_idx_valid(request->wiphy_idx))
6631                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6632
6633         if (genlmsg_end(msg, hdr) < 0) {
6634                 nlmsg_free(msg);
6635                 return;
6636         }
6637
6638         rcu_read_lock();
6639         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6640                                 GFP_ATOMIC);
6641         rcu_read_unlock();
6642
6643         return;
6644
6645 nla_put_failure:
6646         genlmsg_cancel(msg, hdr);
6647         nlmsg_free(msg);
6648 }
6649
6650 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6651                                     struct net_device *netdev,
6652                                     const u8 *buf, size_t len,
6653                                     enum nl80211_commands cmd, gfp_t gfp)
6654 {
6655         struct sk_buff *msg;
6656         void *hdr;
6657
6658         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6659         if (!msg)
6660                 return;
6661
6662         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6663         if (!hdr) {
6664                 nlmsg_free(msg);
6665                 return;
6666         }
6667
6668         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6669         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6670         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6671
6672         if (genlmsg_end(msg, hdr) < 0) {
6673                 nlmsg_free(msg);
6674                 return;
6675         }
6676
6677         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6678                                 nl80211_mlme_mcgrp.id, gfp);
6679         return;
6680
6681  nla_put_failure:
6682         genlmsg_cancel(msg, hdr);
6683         nlmsg_free(msg);
6684 }
6685
6686 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6687                           struct net_device *netdev, const u8 *buf,
6688                           size_t len, gfp_t gfp)
6689 {
6690         nl80211_send_mlme_event(rdev, netdev, buf, len,
6691                                 NL80211_CMD_AUTHENTICATE, gfp);
6692 }
6693
6694 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6695                            struct net_device *netdev, const u8 *buf,
6696                            size_t len, gfp_t gfp)
6697 {
6698         nl80211_send_mlme_event(rdev, netdev, buf, len,
6699                                 NL80211_CMD_ASSOCIATE, gfp);
6700 }
6701
6702 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6703                          struct net_device *netdev, const u8 *buf,
6704                          size_t len, gfp_t gfp)
6705 {
6706         nl80211_send_mlme_event(rdev, netdev, buf, len,
6707                                 NL80211_CMD_DEAUTHENTICATE, gfp);
6708 }
6709
6710 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6711                            struct net_device *netdev, const u8 *buf,
6712                            size_t len, gfp_t gfp)
6713 {
6714         nl80211_send_mlme_event(rdev, netdev, buf, len,
6715                                 NL80211_CMD_DISASSOCIATE, gfp);
6716 }
6717
6718 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6719                                 struct net_device *netdev, const u8 *buf,
6720                                 size_t len, gfp_t gfp)
6721 {
6722         nl80211_send_mlme_event(rdev, netdev, buf, len,
6723                                 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6724 }
6725
6726 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6727                                   struct net_device *netdev, const u8 *buf,
6728                                   size_t len, gfp_t gfp)
6729 {
6730         nl80211_send_mlme_event(rdev, netdev, buf, len,
6731                                 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6732 }
6733
6734 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6735                                       struct net_device *netdev, int cmd,
6736                                       const u8 *addr, gfp_t gfp)
6737 {
6738         struct sk_buff *msg;
6739         void *hdr;
6740
6741         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6742         if (!msg)
6743                 return;
6744
6745         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6746         if (!hdr) {
6747                 nlmsg_free(msg);
6748                 return;
6749         }
6750
6751         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6752         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6753         NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6754         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6755
6756         if (genlmsg_end(msg, hdr) < 0) {
6757                 nlmsg_free(msg);
6758                 return;
6759         }
6760
6761         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6762                                 nl80211_mlme_mcgrp.id, gfp);
6763         return;
6764
6765  nla_put_failure:
6766         genlmsg_cancel(msg, hdr);
6767         nlmsg_free(msg);
6768 }
6769
6770 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6771                                struct net_device *netdev, const u8 *addr,
6772                                gfp_t gfp)
6773 {
6774         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6775                                   addr, gfp);
6776 }
6777
6778 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6779                                 struct net_device *netdev, const u8 *addr,
6780                                 gfp_t gfp)
6781 {
6782         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6783                                   addr, gfp);
6784 }
6785
6786 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6787                                  struct net_device *netdev, const u8 *bssid,
6788                                  const u8 *req_ie, size_t req_ie_len,
6789                                  const u8 *resp_ie, size_t resp_ie_len,
6790                                  u16 status, gfp_t gfp)
6791 {
6792         struct sk_buff *msg;
6793         void *hdr;
6794
6795         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6796         if (!msg)
6797                 return;
6798
6799         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6800         if (!hdr) {
6801                 nlmsg_free(msg);
6802                 return;
6803         }
6804
6805         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6806         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6807         if (bssid)
6808                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6809         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6810         if (req_ie)
6811                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6812         if (resp_ie)
6813                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6814
6815         if (genlmsg_end(msg, hdr) < 0) {
6816                 nlmsg_free(msg);
6817                 return;
6818         }
6819
6820         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6821                                 nl80211_mlme_mcgrp.id, gfp);
6822         return;
6823
6824  nla_put_failure:
6825         genlmsg_cancel(msg, hdr);
6826         nlmsg_free(msg);
6827
6828 }
6829
6830 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6831                          struct net_device *netdev, const u8 *bssid,
6832                          const u8 *req_ie, size_t req_ie_len,
6833                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6834 {
6835         struct sk_buff *msg;
6836         void *hdr;
6837
6838         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6839         if (!msg)
6840                 return;
6841
6842         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6843         if (!hdr) {
6844                 nlmsg_free(msg);
6845                 return;
6846         }
6847
6848         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6849         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6850         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6851         if (req_ie)
6852                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6853         if (resp_ie)
6854                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6855
6856         if (genlmsg_end(msg, hdr) < 0) {
6857                 nlmsg_free(msg);
6858                 return;
6859         }
6860
6861         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6862                                 nl80211_mlme_mcgrp.id, gfp);
6863         return;
6864
6865  nla_put_failure:
6866         genlmsg_cancel(msg, hdr);
6867         nlmsg_free(msg);
6868
6869 }
6870
6871 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6872                                struct net_device *netdev, u16 reason,
6873                                const u8 *ie, size_t ie_len, bool from_ap)
6874 {
6875         struct sk_buff *msg;
6876         void *hdr;
6877
6878         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6879         if (!msg)
6880                 return;
6881
6882         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6883         if (!hdr) {
6884                 nlmsg_free(msg);
6885                 return;
6886         }
6887
6888         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6889         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6890         if (from_ap && reason)
6891                 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6892         if (from_ap)
6893                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6894         if (ie)
6895                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6896
6897         if (genlmsg_end(msg, hdr) < 0) {
6898                 nlmsg_free(msg);
6899                 return;
6900         }
6901
6902         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6903                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6904         return;
6905
6906  nla_put_failure:
6907         genlmsg_cancel(msg, hdr);
6908         nlmsg_free(msg);
6909
6910 }
6911
6912 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6913                              struct net_device *netdev, const u8 *bssid,
6914                              gfp_t gfp)
6915 {
6916         struct sk_buff *msg;
6917         void *hdr;
6918
6919         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6920         if (!msg)
6921                 return;
6922
6923         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6924         if (!hdr) {
6925                 nlmsg_free(msg);
6926                 return;
6927         }
6928
6929         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6930         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6931         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6932
6933         if (genlmsg_end(msg, hdr) < 0) {
6934                 nlmsg_free(msg);
6935                 return;
6936         }
6937
6938         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6939                                 nl80211_mlme_mcgrp.id, gfp);
6940         return;
6941
6942  nla_put_failure:
6943         genlmsg_cancel(msg, hdr);
6944         nlmsg_free(msg);
6945 }
6946
6947 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6948                 struct net_device *netdev,
6949                 const u8 *macaddr, const u8* ie, u8 ie_len,
6950                 gfp_t gfp)
6951 {
6952         struct sk_buff *msg;
6953         void *hdr;
6954
6955         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6956         if (!msg)
6957                 return;
6958
6959         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6960         if (!hdr) {
6961                 nlmsg_free(msg);
6962                 return;
6963         }
6964
6965         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6966         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6967         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6968         if (ie_len && ie)
6969                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6970
6971         if (genlmsg_end(msg, hdr) < 0) {
6972                 nlmsg_free(msg);
6973                 return;
6974         }
6975
6976         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6977                                 nl80211_mlme_mcgrp.id, gfp);
6978         return;
6979
6980  nla_put_failure:
6981         genlmsg_cancel(msg, hdr);
6982         nlmsg_free(msg);
6983 }
6984
6985 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6986                                  struct net_device *netdev, const u8 *addr,
6987                                  enum nl80211_key_type key_type, int key_id,
6988                                  const u8 *tsc, gfp_t gfp)
6989 {
6990         struct sk_buff *msg;
6991         void *hdr;
6992
6993         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6994         if (!msg)
6995                 return;
6996
6997         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6998         if (!hdr) {
6999                 nlmsg_free(msg);
7000                 return;
7001         }
7002
7003         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7004         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7005         if (addr)
7006                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7007         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7008         if (key_id != -1)
7009                 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7010         if (tsc)
7011                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7012
7013         if (genlmsg_end(msg, hdr) < 0) {
7014                 nlmsg_free(msg);
7015                 return;
7016         }
7017
7018         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7019                                 nl80211_mlme_mcgrp.id, gfp);
7020         return;
7021
7022  nla_put_failure:
7023         genlmsg_cancel(msg, hdr);
7024         nlmsg_free(msg);
7025 }
7026
7027 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7028                                     struct ieee80211_channel *channel_before,
7029                                     struct ieee80211_channel *channel_after)
7030 {
7031         struct sk_buff *msg;
7032         void *hdr;
7033         struct nlattr *nl_freq;
7034
7035         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7036         if (!msg)
7037                 return;
7038
7039         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7040         if (!hdr) {
7041                 nlmsg_free(msg);
7042                 return;
7043         }
7044
7045         /*
7046          * Since we are applying the beacon hint to a wiphy we know its
7047          * wiphy_idx is valid
7048          */
7049         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7050
7051         /* Before */
7052         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7053         if (!nl_freq)
7054                 goto nla_put_failure;
7055         if (nl80211_msg_put_channel(msg, channel_before))
7056                 goto nla_put_failure;
7057         nla_nest_end(msg, nl_freq);
7058
7059         /* After */
7060         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7061         if (!nl_freq)
7062                 goto nla_put_failure;
7063         if (nl80211_msg_put_channel(msg, channel_after))
7064                 goto nla_put_failure;
7065         nla_nest_end(msg, nl_freq);
7066
7067         if (genlmsg_end(msg, hdr) < 0) {
7068                 nlmsg_free(msg);
7069                 return;
7070         }
7071
7072         rcu_read_lock();
7073         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7074                                 GFP_ATOMIC);
7075         rcu_read_unlock();
7076
7077         return;
7078
7079 nla_put_failure:
7080         genlmsg_cancel(msg, hdr);
7081         nlmsg_free(msg);
7082 }
7083
7084 static void nl80211_send_remain_on_chan_event(
7085         int cmd, struct cfg80211_registered_device *rdev,
7086         struct net_device *netdev, u64 cookie,
7087         struct ieee80211_channel *chan,
7088         enum nl80211_channel_type channel_type,
7089         unsigned int duration, gfp_t gfp)
7090 {
7091         struct sk_buff *msg;
7092         void *hdr;
7093
7094         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7095         if (!msg)
7096                 return;
7097
7098         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7099         if (!hdr) {
7100                 nlmsg_free(msg);
7101                 return;
7102         }
7103
7104         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7105         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7106         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7107         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7108         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7109
7110         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7111                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7112
7113         if (genlmsg_end(msg, hdr) < 0) {
7114                 nlmsg_free(msg);
7115                 return;
7116         }
7117
7118         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7119                                 nl80211_mlme_mcgrp.id, gfp);
7120         return;
7121
7122  nla_put_failure:
7123         genlmsg_cancel(msg, hdr);
7124         nlmsg_free(msg);
7125 }
7126
7127 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7128                                     struct net_device *netdev, u64 cookie,
7129                                     struct ieee80211_channel *chan,
7130                                     enum nl80211_channel_type channel_type,
7131                                     unsigned int duration, gfp_t gfp)
7132 {
7133         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7134                                           rdev, netdev, cookie, chan,
7135                                           channel_type, duration, gfp);
7136 }
7137
7138 void nl80211_send_remain_on_channel_cancel(
7139         struct cfg80211_registered_device *rdev, struct net_device *netdev,
7140         u64 cookie, struct ieee80211_channel *chan,
7141         enum nl80211_channel_type channel_type, gfp_t gfp)
7142 {
7143         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7144                                           rdev, netdev, cookie, chan,
7145                                           channel_type, 0, gfp);
7146 }
7147
7148 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7149                             struct net_device *dev, const u8 *mac_addr,
7150                             struct station_info *sinfo, gfp_t gfp)
7151 {
7152         struct sk_buff *msg;
7153
7154         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7155         if (!msg)
7156                 return;
7157
7158         if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7159                 nlmsg_free(msg);
7160                 return;
7161         }
7162
7163         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7164                                 nl80211_mlme_mcgrp.id, gfp);
7165 }
7166
7167 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7168                                 struct net_device *dev, const u8 *mac_addr,
7169                                 gfp_t gfp)
7170 {
7171         struct sk_buff *msg;
7172         void *hdr;
7173
7174         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7175         if (!msg)
7176                 return;
7177
7178         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7179         if (!hdr) {
7180                 nlmsg_free(msg);
7181                 return;
7182         }
7183
7184         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7185         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7186
7187         if (genlmsg_end(msg, hdr) < 0) {
7188                 nlmsg_free(msg);
7189                 return;
7190         }
7191
7192         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7193                                 nl80211_mlme_mcgrp.id, gfp);
7194         return;
7195
7196  nla_put_failure:
7197         genlmsg_cancel(msg, hdr);
7198         nlmsg_free(msg);
7199 }
7200
7201 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7202                       struct net_device *netdev, u32 nlpid,
7203                       int freq, const u8 *buf, size_t len, gfp_t gfp)
7204 {
7205         struct sk_buff *msg;
7206         void *hdr;
7207         int err;
7208
7209         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7210         if (!msg)
7211                 return -ENOMEM;
7212
7213         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7214         if (!hdr) {
7215                 nlmsg_free(msg);
7216                 return -ENOMEM;
7217         }
7218
7219         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7220         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7221         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7222         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7223
7224         err = genlmsg_end(msg, hdr);
7225         if (err < 0) {
7226                 nlmsg_free(msg);
7227                 return err;
7228         }
7229
7230         err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7231         if (err < 0)
7232                 return err;
7233         return 0;
7234
7235  nla_put_failure:
7236         genlmsg_cancel(msg, hdr);
7237         nlmsg_free(msg);
7238         return -ENOBUFS;
7239 }
7240
7241 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7242                                  struct net_device *netdev, u64 cookie,
7243                                  const u8 *buf, size_t len, bool ack,
7244                                  gfp_t gfp)
7245 {
7246         struct sk_buff *msg;
7247         void *hdr;
7248
7249         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7250         if (!msg)
7251                 return;
7252
7253         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7254         if (!hdr) {
7255                 nlmsg_free(msg);
7256                 return;
7257         }
7258
7259         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7260         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7261         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7262         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7263         if (ack)
7264                 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7265
7266         if (genlmsg_end(msg, hdr) < 0) {
7267                 nlmsg_free(msg);
7268                 return;
7269         }
7270
7271         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7272         return;
7273
7274  nla_put_failure:
7275         genlmsg_cancel(msg, hdr);
7276         nlmsg_free(msg);
7277 }
7278
7279 void
7280 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7281                              struct net_device *netdev,
7282                              enum nl80211_cqm_rssi_threshold_event rssi_event,
7283                              gfp_t gfp)
7284 {
7285         struct sk_buff *msg;
7286         struct nlattr *pinfoattr;
7287         void *hdr;
7288
7289         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7290         if (!msg)
7291                 return;
7292
7293         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7294         if (!hdr) {
7295                 nlmsg_free(msg);
7296                 return;
7297         }
7298
7299         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7300         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7301
7302         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7303         if (!pinfoattr)
7304                 goto nla_put_failure;
7305
7306         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7307                     rssi_event);
7308
7309         nla_nest_end(msg, pinfoattr);
7310
7311         if (genlmsg_end(msg, hdr) < 0) {
7312                 nlmsg_free(msg);
7313                 return;
7314         }
7315
7316         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7317                                 nl80211_mlme_mcgrp.id, gfp);
7318         return;
7319
7320  nla_put_failure:
7321         genlmsg_cancel(msg, hdr);
7322         nlmsg_free(msg);
7323 }
7324
7325 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7326                               struct net_device *netdev, const u8 *bssid,
7327                               const u8 *replay_ctr, gfp_t gfp)
7328 {
7329         struct sk_buff *msg;
7330         struct nlattr *rekey_attr;
7331         void *hdr;
7332
7333         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7334         if (!msg)
7335                 return;
7336
7337         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7338         if (!hdr) {
7339                 nlmsg_free(msg);
7340                 return;
7341         }
7342
7343         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7344         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7345         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7346
7347         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7348         if (!rekey_attr)
7349                 goto nla_put_failure;
7350
7351         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7352                 NL80211_REPLAY_CTR_LEN, replay_ctr);
7353
7354         nla_nest_end(msg, rekey_attr);
7355
7356         if (genlmsg_end(msg, hdr) < 0) {
7357                 nlmsg_free(msg);
7358                 return;
7359         }
7360
7361         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7362                                 nl80211_mlme_mcgrp.id, gfp);
7363         return;
7364
7365  nla_put_failure:
7366         genlmsg_cancel(msg, hdr);
7367         nlmsg_free(msg);
7368 }
7369
7370 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7371                                     struct net_device *netdev, int index,
7372                                     const u8 *bssid, bool preauth, gfp_t gfp)
7373 {
7374         struct sk_buff *msg;
7375         struct nlattr *attr;
7376         void *hdr;
7377
7378         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7379         if (!msg)
7380                 return;
7381
7382         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7383         if (!hdr) {
7384                 nlmsg_free(msg);
7385                 return;
7386         }
7387
7388         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7389         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7390
7391         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7392         if (!attr)
7393                 goto nla_put_failure;
7394
7395         NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7396         NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7397         if (preauth)
7398                 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7399
7400         nla_nest_end(msg, attr);
7401
7402         if (genlmsg_end(msg, hdr) < 0) {
7403                 nlmsg_free(msg);
7404                 return;
7405         }
7406
7407         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7408                                 nl80211_mlme_mcgrp.id, gfp);
7409         return;
7410
7411  nla_put_failure:
7412         genlmsg_cancel(msg, hdr);
7413         nlmsg_free(msg);
7414 }
7415
7416 void
7417 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7418                                 struct net_device *netdev, const u8 *peer,
7419                                 u32 num_packets, gfp_t gfp)
7420 {
7421         struct sk_buff *msg;
7422         struct nlattr *pinfoattr;
7423         void *hdr;
7424
7425         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7426         if (!msg)
7427                 return;
7428
7429         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7430         if (!hdr) {
7431                 nlmsg_free(msg);
7432                 return;
7433         }
7434
7435         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7436         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7437         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7438
7439         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7440         if (!pinfoattr)
7441                 goto nla_put_failure;
7442
7443         NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7444
7445         nla_nest_end(msg, pinfoattr);
7446
7447         if (genlmsg_end(msg, hdr) < 0) {
7448                 nlmsg_free(msg);
7449                 return;
7450         }
7451
7452         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7453                                 nl80211_mlme_mcgrp.id, gfp);
7454         return;
7455
7456  nla_put_failure:
7457         genlmsg_cancel(msg, hdr);
7458         nlmsg_free(msg);
7459 }
7460
7461 static int nl80211_netlink_notify(struct notifier_block * nb,
7462                                   unsigned long state,
7463                                   void *_notify)
7464 {
7465         struct netlink_notify *notify = _notify;
7466         struct cfg80211_registered_device *rdev;
7467         struct wireless_dev *wdev;
7468
7469         if (state != NETLINK_URELEASE)
7470                 return NOTIFY_DONE;
7471
7472         rcu_read_lock();
7473
7474         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7475                 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7476                         cfg80211_mlme_unregister_socket(wdev, notify->pid);
7477
7478         rcu_read_unlock();
7479
7480         return NOTIFY_DONE;
7481 }
7482
7483 static struct notifier_block nl80211_netlink_notifier = {
7484         .notifier_call = nl80211_netlink_notify,
7485 };
7486
7487 /* initialisation/exit functions */
7488
7489 int nl80211_init(void)
7490 {
7491         int err;
7492
7493         err = genl_register_family_with_ops(&nl80211_fam,
7494                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7495         if (err)
7496                 return err;
7497
7498         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7499         if (err)
7500                 goto err_out;
7501
7502         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7503         if (err)
7504                 goto err_out;
7505
7506         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7507         if (err)
7508                 goto err_out;
7509
7510         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7511         if (err)
7512                 goto err_out;
7513
7514 #ifdef CONFIG_NL80211_TESTMODE
7515         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7516         if (err)
7517                 goto err_out;
7518 #endif
7519
7520         err = netlink_register_notifier(&nl80211_netlink_notifier);
7521         if (err)
7522                 goto err_out;
7523
7524         return 0;
7525  err_out:
7526         genl_unregister_family(&nl80211_fam);
7527         return err;
7528 }
7529
7530 void nl80211_exit(void)
7531 {
7532         netlink_unregister_notifier(&nl80211_netlink_notifier);
7533         genl_unregister_family(&nl80211_fam);
7534 }