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 int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
  27                             struct genl_info *info);
  28 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
  29                               struct genl_info *info);
  30
  31 /* the netlink family */
  32 static struct genl_family nl80211_fam = {
  33         .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
  34         .name = "nl80211",      /* have users key off the name instead */
  35         .hdrsize = 0,           /* no private header */
  36         .version = 1,           /* no particular meaning now */
  37         .maxattr = NL80211_ATTR_MAX,
  38         .netnsok = true,
  39         .pre_doit = nl80211_pre_doit,
  40         .post_doit = nl80211_post_doit,
  41 };
  42
  43 /* internal helper: get rdev and dev */
  44 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
  45                                        struct cfg80211_registered_device **rdev,
  46                                        struct net_device **dev)
  47 {
  48         struct nlattr **attrs = info->attrs;
  49         int ifindex;
  50
  51         if (!attrs[NL80211_ATTR_IFINDEX])
  52                 return -EINVAL;
  53
  54         ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  55         *dev = dev_get_by_index(genl_info_net(info), ifindex);
  56         if (!*dev)
  57                 return -ENODEV;
  58
  59         *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
  60         if (IS_ERR(*rdev)) {
  61                 dev_put(*dev);
  62                 return PTR_ERR(*rdev);
  63         }
  64
  65         return 0;
  66 }
  67
  68 /* policy for the attributes */
  69 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
  70         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
  71         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
  72                                       .len = 20-1 },
  73         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
  74         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
  75         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
  76         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
  77         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
  78         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
  79         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
  80         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
  81
  82         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
  83         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
  84         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
  85
  86         [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
  87         [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
  88
  89         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
  90         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
  91                                     .len = WLAN_MAX_KEY_LEN },
  92         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
  93         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
  94         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
  95         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
  96         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
  97
  98         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
  99         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 100         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 101                                        .len = IEEE80211_MAX_DATA_LEN },
 102         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 103                                        .len = IEEE80211_MAX_DATA_LEN },
 104         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 105         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 106         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 107         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 108                                                .len = NL80211_MAX_SUPP_RATES },
 109         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 110         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 111         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 112         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 113                                 .len = IEEE80211_MAX_MESH_ID_LEN },
 114         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 115
 116         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 117         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 118
 119         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 120         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 121         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 122         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 123                                            .len = NL80211_MAX_SUPP_RATES },
 124         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 125
 126         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 127         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 128
 129         [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
 130                                          .len = NL80211_HT_CAPABILITY_LEN },
 131
 132         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 133         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 134                               .len = IEEE80211_MAX_DATA_LEN },
 135         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 136         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 137
 138         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 139                                 .len = IEEE80211_MAX_SSID_LEN },
 140         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 141         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 142         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 143         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 144         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 145         [NL80211_ATTR_STA_FLAGS2] = {
 146                 .len = sizeof(struct nl80211_sta_flag_update),
 147         },
 148         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 149         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 150         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 151         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 152         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 153         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 154         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 155         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 156         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 157                                  .len = WLAN_PMKID_LEN },
 158         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 159         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 160         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 161         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 162                                  .len = IEEE80211_MAX_DATA_LEN },
 163         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 164         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 165         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 166         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 167         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 168         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 169         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 170         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 171         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 172         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 173         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 174         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 175         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 176         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 177         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 178         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 179         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 180         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 181 };
 182
 183 /* policy for the key attributes */
 184 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 185         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 186         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 187         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 188         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
 189         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 190         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 191         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 192         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 193 };
 194
 195 /* policy for the key default flags */
 196 static const struct nla_policy
 197 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 198         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 199         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 200 };
 201
 202 /* policy for WoWLAN attributes */
 203 static const struct nla_policy
 204 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 205         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 206         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 207         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 208         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 209         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 210         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 211         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 212         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 213 };
 214
 215 /* policy for GTK rekey offload attributes */
 216 static const struct nla_policy
 217 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 218         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 219         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 220         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 221 };
 222
 223 /* ifidx get helper */
 224 static int nl80211_get_ifidx(struct netlink_callback *cb)
 225 {
 226         int res;
 227
 228         res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 229                           nl80211_fam.attrbuf, nl80211_fam.maxattr,
 230                           nl80211_policy);
 231         if (res)
 232                 return res;
 233
 234         if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
 235                 return -EINVAL;
 236
 237         res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
 238         if (!res)
 239                 return -EINVAL;
 240         return res;
 241 }
 242
 243 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
 244                                        struct netlink_callback *cb,
 245                                        struct cfg80211_registered_device **rdev,
 246                                        struct net_device **dev)
 247 {
 248         int ifidx = cb->args[0];
 249         int err;
 250
 251         if (!ifidx)
 252                 ifidx = nl80211_get_ifidx(cb);
 253         if (ifidx < 0)
 254                 return ifidx;
 255
 256         cb->args[0] = ifidx;
 257
 258         rtnl_lock();
 259
 260         *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
 261         if (!*dev) {
 262                 err = -ENODEV;
 263                 goto out_rtnl;
 264         }
 265
 266         *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
 267         if (IS_ERR(*rdev)) {
 268                 err = PTR_ERR(*rdev);
 269                 goto out_rtnl;
 270         }
 271
 272         return 0;
 273  out_rtnl:
 274         rtnl_unlock();
 275         return err;
 276 }
 277
 278 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
 279 {
 280         cfg80211_unlock_rdev(rdev);
 281         rtnl_unlock();
 282 }
 283
 284 /* IE validation */
 285 static bool is_valid_ie_attr(const struct nlattr *attr)
 286 {
 287         const u8 *pos;
 288         int len;
 289
 290         if (!attr)
 291                 return true;
 292
 293         pos = nla_data(attr);
 294         len = nla_len(attr);
 295
 296         while (len) {
 297                 u8 elemlen;
 298
 299                 if (len < 2)
 300                         return false;
 301                 len -= 2;
 302
 303                 elemlen = pos[1];
 304                 if (elemlen > len)
 305                         return false;
 306
 307                 len -= elemlen;
 308                 pos += 2 + elemlen;
 309         }
 310
 311         return true;
 312 }
 313
 314 /* message building helper */
 315 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
 316                                    int flags, u8 cmd)
 317 {
 318         /* since there is no private header just add the generic one */
 319         return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
 320 }
 321
 322 static int nl80211_msg_put_channel(struct sk_buff *msg,
 323                                    struct ieee80211_channel *chan)
 324 {
 325         NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 326                     chan->center_freq);
 327
 328         if (chan->flags & IEEE80211_CHAN_DISABLED)
 329                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
 330         if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
 331                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
 332         if (chan->flags & IEEE80211_CHAN_NO_IBSS)
 333                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
 334         if (chan->flags & IEEE80211_CHAN_RADAR)
 335                 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
 336
 337         NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 338                     DBM_TO_MBM(chan->max_power));
 339
 340         return 0;
 341
 342  nla_put_failure:
 343         return -ENOBUFS;
 344 }
 345
 346 /* netlink command implementations */
 347
 348 struct key_parse {
 349         struct key_params p;
 350         int idx;
 351         int type;
 352         bool def, defmgmt;
 353         bool def_uni, def_multi;
 354 };
 355
 356 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 357 {
 358         struct nlattr *tb[NL80211_KEY_MAX + 1];
 359         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 360                                    nl80211_key_policy);
 361         if (err)
 362                 return err;
 363
 364         k->def = !!tb[NL80211_KEY_DEFAULT];
 365         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 366
 367         if (k->def) {
 368                 k->def_uni = true;
 369                 k->def_multi = true;
 370         }
 371         if (k->defmgmt)
 372                 k->def_multi = true;
 373
 374         if (tb[NL80211_KEY_IDX])
 375                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 376
 377         if (tb[NL80211_KEY_DATA]) {
 378                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 379                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 380         }
 381
 382         if (tb[NL80211_KEY_SEQ]) {
 383                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 384                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 385         }
 386
 387         if (tb[NL80211_KEY_CIPHER])
 388                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 389
 390         if (tb[NL80211_KEY_TYPE]) {
 391                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 392                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 393                         return -EINVAL;
 394         }
 395
 396         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 397                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 398                 int err = nla_parse_nested(kdt,
 399                                            NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 400                                            tb[NL80211_KEY_DEFAULT_TYPES],
 401                                            nl80211_key_default_policy);
 402                 if (err)
 403                         return err;
 404
 405                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 406                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 407         }
 408
 409         return 0;
 410 }
 411
 412 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 413 {
 414         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 415                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 416                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 417         }
 418
 419         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 420                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 421                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 422         }
 423
 424         if (info->attrs[NL80211_ATTR_KEY_IDX])
 425                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 426
 427         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 428                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 429
 430         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 431         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 432
 433         if (k->def) {
 434                 k->def_uni = true;
 435                 k->def_multi = true;
 436         }
 437         if (k->defmgmt)
 438                 k->def_multi = true;
 439
 440         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 441                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 442                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 443                         return -EINVAL;
 444         }
 445
 446         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 447                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 448                 int err = nla_parse_nested(
 449                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 450                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 451                                 nl80211_key_default_policy);
 452                 if (err)
 453                         return err;
 454
 455                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 456                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 457         }
 458
 459         return 0;
 460 }
 461
 462 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 463 {
 464         int err;
 465
 466         memset(k, 0, sizeof(*k));
 467         k->idx = -1;
 468         k->type = -1;
 469
 470         if (info->attrs[NL80211_ATTR_KEY])
 471                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 472         else
 473                 err = nl80211_parse_key_old(info, k);
 474
 475         if (err)
 476                 return err;
 477
 478         if (k->def && k->defmgmt)
 479                 return -EINVAL;
 480
 481         if (k->defmgmt) {
 482                 if (k->def_uni || !k->def_multi)
 483                         return -EINVAL;
 484         }
 485
 486         if (k->idx != -1) {
 487                 if (k->defmgmt) {
 488                         if (k->idx < 4 || k->idx > 5)
 489                                 return -EINVAL;
 490                 } else if (k->def) {
 491                         if (k->idx < 0 || k->idx > 3)
 492                                 return -EINVAL;
 493                 } else {
 494                         if (k->idx < 0 || k->idx > 5)
 495                                 return -EINVAL;
 496                 }
 497         }
 498
 499         return 0;
 500 }
 501
 502 static struct cfg80211_cached_keys *
 503 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 504                        struct nlattr *keys)
 505 {
 506         struct key_parse parse;
 507         struct nlattr *key;
 508         struct cfg80211_cached_keys *result;
 509         int rem, err, def = 0;
 510
 511         result = kzalloc(sizeof(*result), GFP_KERNEL);
 512         if (!result)
 513                 return ERR_PTR(-ENOMEM);
 514
 515         result->def = -1;
 516         result->defmgmt = -1;
 517
 518         nla_for_each_nested(key, keys, rem) {
 519                 memset(&parse, 0, sizeof(parse));
 520                 parse.idx = -1;
 521
 522                 err = nl80211_parse_key_new(key, &parse);
 523                 if (err)
 524                         goto error;
 525                 err = -EINVAL;
 526                 if (!parse.p.key)
 527                         goto error;
 528                 if (parse.idx < 0 || parse.idx > 4)
 529                         goto error;
 530                 if (parse.def) {
 531                         if (def)
 532                                 goto error;
 533                         def = 1;
 534                         result->def = parse.idx;
 535                         if (!parse.def_uni || !parse.def_multi)
 536                                 goto error;
 537                 } else if (parse.defmgmt)
 538                         goto error;
 539                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 540                                                      parse.idx, false, NULL);
 541                 if (err)
 542                         goto error;
 543                 result->params[parse.idx].cipher = parse.p.cipher;
 544                 result->params[parse.idx].key_len = parse.p.key_len;
 545                 result->params[parse.idx].key = result->data[parse.idx];
 546                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 547         }
 548
 549         return result;
 550  error:
 551         kfree(result);
 552         return ERR_PTR(err);
 553 }
 554
 555 static int nl80211_key_allowed(struct wireless_dev *wdev)
 556 {
 557         ASSERT_WDEV_LOCK(wdev);
 558
 559         switch (wdev->iftype) {
 560         case NL80211_IFTYPE_AP:
 561         case NL80211_IFTYPE_AP_VLAN:
 562         case NL80211_IFTYPE_P2P_GO:
 563         case NL80211_IFTYPE_MESH_POINT:
 564                 break;
 565         case NL80211_IFTYPE_ADHOC:
 566                 if (!wdev->current_bss)
 567                         return -ENOLINK;
 568                 break;
 569         case NL80211_IFTYPE_STATION:
 570         case NL80211_IFTYPE_P2P_CLIENT:
 571                 if (wdev->sme_state != CFG80211_SME_CONNECTED)
 572                         return -ENOLINK;
 573                 break;
 574         default:
 575                 return -EINVAL;
 576         }
 577
 578         return 0;
 579 }
 580
 581 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 582 {
 583         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 584         int i;
 585
 586         if (!nl_modes)
 587                 goto nla_put_failure;
 588
 589         i = 0;
 590         while (ifmodes) {
 591                 if (ifmodes & 1)
 592                         NLA_PUT_FLAG(msg, i);
 593                 ifmodes >>= 1;
 594                 i++;
 595         }
 596
 597         nla_nest_end(msg, nl_modes);
 598         return 0;
 599
 600 nla_put_failure:
 601         return -ENOBUFS;
 602 }
 603
 604 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 605                                           struct sk_buff *msg)
 606 {
 607         struct nlattr *nl_combis;
 608         int i, j;
 609
 610         nl_combis = nla_nest_start(msg,
 611                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 612         if (!nl_combis)
 613                 goto nla_put_failure;
 614
 615         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 616                 const struct ieee80211_iface_combination *c;
 617                 struct nlattr *nl_combi, *nl_limits;
 618
 619                 c = &wiphy->iface_combinations[i];
 620
 621                 nl_combi = nla_nest_start(msg, i + 1);
 622                 if (!nl_combi)
 623                         goto nla_put_failure;
 624
 625                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 626                 if (!nl_limits)
 627                         goto nla_put_failure;
 628
 629                 for (j = 0; j < c->n_limits; j++) {
 630                         struct nlattr *nl_limit;
 631
 632                         nl_limit = nla_nest_start(msg, j + 1);
 633                         if (!nl_limit)
 634                                 goto nla_put_failure;
 635                         NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
 636                                     c->limits[j].max);
 637                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 638                                                 c->limits[j].types))
 639                                 goto nla_put_failure;
 640                         nla_nest_end(msg, nl_limit);
 641                 }
 642
 643                 nla_nest_end(msg, nl_limits);
 644
 645                 if (c->beacon_int_infra_match)
 646                         NLA_PUT_FLAG(msg,
 647                                 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
 648                 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 649                             c->num_different_channels);
 650                 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
 651                             c->max_interfaces);
 652
 653                 nla_nest_end(msg, nl_combi);
 654         }
 655
 656         nla_nest_end(msg, nl_combis);
 657
 658         return 0;
 659 nla_put_failure:
 660         return -ENOBUFS;
 661 }
 662
 663 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 664                               struct cfg80211_registered_device *dev)
 665 {
 666         void *hdr;
 667         struct nlattr *nl_bands, *nl_band;
 668         struct nlattr *nl_freqs, *nl_freq;
 669         struct nlattr *nl_rates, *nl_rate;
 670         struct nlattr *nl_cmds;
 671         enum ieee80211_band band;
 672         struct ieee80211_channel *chan;
 673         struct ieee80211_rate *rate;
 674         int i;
 675         const struct ieee80211_txrx_stypes *mgmt_stypes =
 676                                 dev->wiphy.mgmt_stypes;
 677
 678         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
 679         if (!hdr)
 680                 return -1;
 681
 682         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
 683         NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
 684
 685         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
 686                     cfg80211_rdev_list_generation);
 687
 688         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
 689                    dev->wiphy.retry_short);
 690         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
 691                    dev->wiphy.retry_long);
 692         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
 693                     dev->wiphy.frag_threshold);
 694         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
 695                     dev->wiphy.rts_threshold);
 696         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
 697                     dev->wiphy.coverage_class);
 698         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
 699                    dev->wiphy.max_scan_ssids);
 700         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
 701                    dev->wiphy.max_sched_scan_ssids);
 702         NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
 703                     dev->wiphy.max_scan_ie_len);
 704         NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
 705                     dev->wiphy.max_sched_scan_ie_len);
 706
 707         if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
 708                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
 709         if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
 710                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
 711
 712         NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
 713                 sizeof(u32) * dev->wiphy.n_cipher_suites,
 714                 dev->wiphy.cipher_suites);
 715
 716         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
 717                    dev->wiphy.max_num_pmkids);
 718
 719         if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
 720                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
 721
 722         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
 723                     dev->wiphy.available_antennas_tx);
 724         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
 725                     dev->wiphy.available_antennas_rx);
 726
 727         if ((dev->wiphy.available_antennas_tx ||
 728              dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
 729                 u32 tx_ant = 0, rx_ant = 0;
 730                 int res;
 731                 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
 732                 if (!res) {
 733                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
 734                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
 735                 }
 736         }
 737
 738         if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
 739                                 dev->wiphy.interface_modes))
 740                 goto nla_put_failure;
 741
 742         nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
 743         if (!nl_bands)
 744                 goto nla_put_failure;
 745
 746         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 747                 if (!dev->wiphy.bands[band])
 748                         continue;
 749
 750                 nl_band = nla_nest_start(msg, band);
 751                 if (!nl_band)
 752                         goto nla_put_failure;
 753
 754                 /* add HT info */
 755                 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
 756                         NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
 757                                 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
 758                                 &dev->wiphy.bands[band]->ht_cap.mcs);
 759                         NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
 760                                 dev->wiphy.bands[band]->ht_cap.cap);
 761                         NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
 762                                 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
 763                         NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
 764                                 dev->wiphy.bands[band]->ht_cap.ampdu_density);
 765                 }
 766
 767                 /* add frequencies */
 768                 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
 769                 if (!nl_freqs)
 770                         goto nla_put_failure;
 771
 772                 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
 773                         nl_freq = nla_nest_start(msg, i);
 774                         if (!nl_freq)
 775                                 goto nla_put_failure;
 776
 777                         chan = &dev->wiphy.bands[band]->channels[i];
 778
 779                         if (nl80211_msg_put_channel(msg, chan))
 780                                 goto nla_put_failure;
 781
 782                         nla_nest_end(msg, nl_freq);
 783                 }
 784
 785                 nla_nest_end(msg, nl_freqs);
 786
 787                 /* add bitrates */
 788                 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
 789                 if (!nl_rates)
 790                         goto nla_put_failure;
 791
 792                 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
 793                         nl_rate = nla_nest_start(msg, i);
 794                         if (!nl_rate)
 795                                 goto nla_put_failure;
 796
 797                         rate = &dev->wiphy.bands[band]->bitrates[i];
 798                         NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
 799                                     rate->bitrate);
 800                         if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
 801                                 NLA_PUT_FLAG(msg,
 802                                         NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
 803
 804                         nla_nest_end(msg, nl_rate);
 805                 }
 806
 807                 nla_nest_end(msg, nl_rates);
 808
 809                 nla_nest_end(msg, nl_band);
 810         }
 811         nla_nest_end(msg, nl_bands);
 812
 813         nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
 814         if (!nl_cmds)
 815                 goto nla_put_failure;
 816
 817         i = 0;
 818 #define CMD(op, n)                                              \
 819          do {                                                   \
 820                 if (dev->ops->op) {                             \
 821                         i++;                                    \
 822                         NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
 823                 }                                               \
 824         } while (0)
 825
 826         CMD(add_virtual_intf, NEW_INTERFACE);
 827         CMD(change_virtual_intf, SET_INTERFACE);
 828         CMD(add_key, NEW_KEY);
 829         CMD(add_beacon, NEW_BEACON);
 830         CMD(add_station, NEW_STATION);
 831         CMD(add_mpath, NEW_MPATH);
 832         CMD(update_mesh_config, SET_MESH_CONFIG);
 833         CMD(change_bss, SET_BSS);
 834         CMD(auth, AUTHENTICATE);
 835         CMD(assoc, ASSOCIATE);
 836         CMD(deauth, DEAUTHENTICATE);
 837         CMD(disassoc, DISASSOCIATE);
 838         CMD(join_ibss, JOIN_IBSS);
 839         CMD(join_mesh, JOIN_MESH);
 840         CMD(set_pmksa, SET_PMKSA);
 841         CMD(del_pmksa, DEL_PMKSA);
 842         CMD(flush_pmksa, FLUSH_PMKSA);
 843         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
 844         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
 845         CMD(mgmt_tx, FRAME);
 846         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
 847         if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
 848                 i++;
 849                 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
 850         }
 851         CMD(set_channel, SET_CHANNEL);
 852         CMD(set_wds_peer, SET_WDS_PEER);
 853         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
 854                 CMD(sched_scan_start, START_SCHED_SCAN);
 855
 856 #undef CMD
 857
 858         if (dev->ops->connect || dev->ops->auth) {
 859                 i++;
 860                 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
 861         }
 862
 863         if (dev->ops->disconnect || dev->ops->deauth) {
 864                 i++;
 865                 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
 866         }
 867
 868         nla_nest_end(msg, nl_cmds);
 869
 870         if (dev->ops->remain_on_channel)
 871                 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
 872                             dev->wiphy.max_remain_on_channel_duration);
 873
 874         /* for now at least assume all drivers have it */
 875         if (dev->ops->mgmt_tx)
 876                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
 877
 878         if (mgmt_stypes) {
 879                 u16 stypes;
 880                 struct nlattr *nl_ftypes, *nl_ifs;
 881                 enum nl80211_iftype ift;
 882
 883                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
 884                 if (!nl_ifs)
 885                         goto nla_put_failure;
 886
 887                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
 888                         nl_ftypes = nla_nest_start(msg, ift);
 889                         if (!nl_ftypes)
 890                                 goto nla_put_failure;
 891                         i = 0;
 892                         stypes = mgmt_stypes[ift].tx;
 893                         while (stypes) {
 894                                 if (stypes & 1)
 895                                         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
 896                                                     (i << 4) | IEEE80211_FTYPE_MGMT);
 897                                 stypes >>= 1;
 898                                 i++;
 899                         }
 900                         nla_nest_end(msg, nl_ftypes);
 901                 }
 902
 903                 nla_nest_end(msg, nl_ifs);
 904
 905                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
 906                 if (!nl_ifs)
 907                         goto nla_put_failure;
 908
 909                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
 910                         nl_ftypes = nla_nest_start(msg, ift);
 911                         if (!nl_ftypes)
 912                                 goto nla_put_failure;
 913                         i = 0;
 914                         stypes = mgmt_stypes[ift].rx;
 915                         while (stypes) {
 916                                 if (stypes & 1)
 917                                         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
 918                                                     (i << 4) | IEEE80211_FTYPE_MGMT);
 919                                 stypes >>= 1;
 920                                 i++;
 921                         }
 922                         nla_nest_end(msg, nl_ftypes);
 923                 }
 924                 nla_nest_end(msg, nl_ifs);
 925         }
 926
 927         if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
 928                 struct nlattr *nl_wowlan;
 929
 930                 nl_wowlan = nla_nest_start(msg,
 931                                 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 932                 if (!nl_wowlan)
 933                         goto nla_put_failure;
 934
 935                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
 936                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
 937                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
 938                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
 939                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
 940                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
 941                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
 942                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
 943                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
 944                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
 945                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
 946                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
 947                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
 948                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
 949                 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
 950                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
 951                 if (dev->wiphy.wowlan.n_patterns) {
 952                         struct nl80211_wowlan_pattern_support pat = {
 953                                 .max_patterns = dev->wiphy.wowlan.n_patterns,
 954                                 .min_pattern_len =
 955                                         dev->wiphy.wowlan.pattern_min_len,
 956                                 .max_pattern_len =
 957                                         dev->wiphy.wowlan.pattern_max_len,
 958                         };
 959                         NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
 960                                 sizeof(pat), &pat);
 961                 }
 962
 963                 nla_nest_end(msg, nl_wowlan);
 964         }
 965
 966         if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
 967                                 dev->wiphy.software_iftypes))
 968                 goto nla_put_failure;
 969
 970         if (nl80211_put_iface_combinations(&dev->wiphy, msg))
 971                 goto nla_put_failure;
 972
 973         return genlmsg_end(msg, hdr);
 974
 975  nla_put_failure:
 976         genlmsg_cancel(msg, hdr);
 977         return -EMSGSIZE;
 978 }
 979
 980 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
 981 {
 982         int idx = 0;
 983         int start = cb->args[0];
 984         struct cfg80211_registered_device *dev;
 985
 986         mutex_lock(&cfg80211_mutex);
 987         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
 988                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
 989                         continue;
 990                 if (++idx <= start)
 991                         continue;
 992                 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
 993                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
 994                                        dev) < 0) {
 995                         idx--;
 996                         break;
 997                 }
 998         }
 999         mutex_unlock(&cfg80211_mutex);
1000
1001         cb->args[0] = idx;
1002
1003         return skb->len;
1004 }
1005
1006 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1007 {
1008         struct sk_buff *msg;
1009         struct cfg80211_registered_device *dev = info->user_ptr[0];
1010
1011         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1012         if (!msg)
1013                 return -ENOMEM;
1014
1015         if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1016                 nlmsg_free(msg);
1017                 return -ENOBUFS;
1018         }
1019
1020         return genlmsg_reply(msg, info);
1021 }
1022
1023 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1024         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1025         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1026         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1027         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1028         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1029 };
1030
1031 static int parse_txq_params(struct nlattr *tb[],
1032                             struct ieee80211_txq_params *txq_params)
1033 {
1034         if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1035             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1036             !tb[NL80211_TXQ_ATTR_AIFS])
1037                 return -EINVAL;
1038
1039         txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1040         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1041         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1042         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1043         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1044
1045         return 0;
1046 }
1047
1048 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1049 {
1050         /*
1051          * You can only set the channel explicitly for AP, mesh
1052          * and WDS type interfaces; all others have their channel
1053          * managed via their respective "establish a connection"
1054          * command (connect, join, ...)
1055          *
1056          * Monitors are special as they are normally slaved to
1057          * whatever else is going on, so they behave as though
1058          * you tried setting the wiphy channel itself.
1059          */
1060         return !wdev ||
1061                 wdev->iftype == NL80211_IFTYPE_AP ||
1062                 wdev->iftype == NL80211_IFTYPE_WDS ||
1063                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1064                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1065                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1066 }
1067
1068 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1069                                  struct wireless_dev *wdev,
1070                                  struct genl_info *info)
1071 {
1072         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1073         u32 freq;
1074         int result;
1075
1076         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1077                 return -EINVAL;
1078
1079         if (!nl80211_can_set_dev_channel(wdev))
1080                 return -EOPNOTSUPP;
1081
1082         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1083                 channel_type = nla_get_u32(info->attrs[
1084                                    NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1085                 if (channel_type != NL80211_CHAN_NO_HT &&
1086                     channel_type != NL80211_CHAN_HT20 &&
1087                     channel_type != NL80211_CHAN_HT40PLUS &&
1088                     channel_type != NL80211_CHAN_HT40MINUS)
1089                         return -EINVAL;
1090         }
1091
1092         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1093
1094         mutex_lock(&rdev->devlist_mtx);
1095         if (wdev) {
1096                 wdev_lock(wdev);
1097                 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1098                 wdev_unlock(wdev);
1099         } else {
1100                 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1101         }
1102         mutex_unlock(&rdev->devlist_mtx);
1103
1104         return result;
1105 }
1106
1107 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1108 {
1109         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1110         struct net_device *netdev = info->user_ptr[1];
1111
1112         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1113 }
1114
1115 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1116 {
1117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1118         struct net_device *dev = info->user_ptr[1];
1119         struct wireless_dev *wdev = dev->ieee80211_ptr;
1120         const u8 *bssid;
1121
1122         if (!info->attrs[NL80211_ATTR_MAC])
1123                 return -EINVAL;
1124
1125         if (netif_running(dev))
1126                 return -EBUSY;
1127
1128         if (!rdev->ops->set_wds_peer)
1129                 return -EOPNOTSUPP;
1130
1131         if (wdev->iftype != NL80211_IFTYPE_WDS)
1132                 return -EOPNOTSUPP;
1133
1134         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1135         return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1136 }
1137
1138
1139 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1140 {
1141         struct cfg80211_registered_device *rdev;
1142         struct net_device *netdev = NULL;
1143         struct wireless_dev *wdev;
1144         int result = 0, rem_txq_params = 0;
1145         struct nlattr *nl_txq_params;
1146         u32 changed;
1147         u8 retry_short = 0, retry_long = 0;
1148         u32 frag_threshold = 0, rts_threshold = 0;
1149         u8 coverage_class = 0;
1150
1151         /*
1152          * Try to find the wiphy and netdev. Normally this
1153          * function shouldn't need the netdev, but this is
1154          * done for backward compatibility -- previously
1155          * setting the channel was done per wiphy, but now
1156          * it is per netdev. Previous userland like hostapd
1157          * also passed a netdev to set_wiphy, so that it is
1158          * possible to let that go to the right netdev!
1159          */
1160         mutex_lock(&cfg80211_mutex);
1161
1162         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1163                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1164
1165                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1166                 if (netdev && netdev->ieee80211_ptr) {
1167                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1168                         mutex_lock(&rdev->mtx);
1169                 } else
1170                         netdev = NULL;
1171         }
1172
1173         if (!netdev) {
1174                 rdev = __cfg80211_rdev_from_info(info);
1175                 if (IS_ERR(rdev)) {
1176                         mutex_unlock(&cfg80211_mutex);
1177                         return PTR_ERR(rdev);
1178                 }
1179                 wdev = NULL;
1180                 netdev = NULL;
1181                 result = 0;
1182
1183                 mutex_lock(&rdev->mtx);
1184         } else if (netif_running(netdev) &&
1185                    nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1186                 wdev = netdev->ieee80211_ptr;
1187         else
1188                 wdev = NULL;
1189
1190         /*
1191          * end workaround code, by now the rdev is available
1192          * and locked, and wdev may or may not be NULL.
1193          */
1194
1195         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1196                 result = cfg80211_dev_rename(
1197                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1198
1199         mutex_unlock(&cfg80211_mutex);
1200
1201         if (result)
1202                 goto bad_res;
1203
1204         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1205                 struct ieee80211_txq_params txq_params;
1206                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1207
1208                 if (!rdev->ops->set_txq_params) {
1209                         result = -EOPNOTSUPP;
1210                         goto bad_res;
1211                 }
1212
1213                 nla_for_each_nested(nl_txq_params,
1214                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1215                                     rem_txq_params) {
1216                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1217                                   nla_data(nl_txq_params),
1218                                   nla_len(nl_txq_params),
1219                                   txq_params_policy);
1220                         result = parse_txq_params(tb, &txq_params);
1221                         if (result)
1222                                 goto bad_res;
1223
1224                         result = rdev->ops->set_txq_params(&rdev->wiphy,
1225                                                            &txq_params);
1226                         if (result)
1227                                 goto bad_res;
1228                 }
1229         }
1230
1231         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1232                 result = __nl80211_set_channel(rdev, wdev, info);
1233                 if (result)
1234                         goto bad_res;
1235         }
1236
1237         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1238                 enum nl80211_tx_power_setting type;
1239                 int idx, mbm = 0;
1240
1241                 if (!rdev->ops->set_tx_power) {
1242                         result = -EOPNOTSUPP;
1243                         goto bad_res;
1244                 }
1245
1246                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1247                 type = nla_get_u32(info->attrs[idx]);
1248
1249                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1250                     (type != NL80211_TX_POWER_AUTOMATIC)) {
1251                         result = -EINVAL;
1252                         goto bad_res;
1253                 }
1254
1255                 if (type != NL80211_TX_POWER_AUTOMATIC) {
1256                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1257                         mbm = nla_get_u32(info->attrs[idx]);
1258                 }
1259
1260                 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1261                 if (result)
1262                         goto bad_res;
1263         }
1264
1265         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1266             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1267                 u32 tx_ant, rx_ant;
1268                 if ((!rdev->wiphy.available_antennas_tx &&
1269                      !rdev->wiphy.available_antennas_rx) ||
1270                     !rdev->ops->set_antenna) {
1271                         result = -EOPNOTSUPP;
1272                         goto bad_res;
1273                 }
1274
1275                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1276                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1277
1278                 /* reject antenna configurations which don't match the
1279                  * available antenna masks, except for the "all" mask */
1280                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1281                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1282                         result = -EINVAL;
1283                         goto bad_res;
1284                 }
1285
1286                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1287                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1288
1289                 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1290                 if (result)
1291                         goto bad_res;
1292         }
1293
1294         changed = 0;
1295
1296         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1297                 retry_short = nla_get_u8(
1298                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1299                 if (retry_short == 0) {
1300                         result = -EINVAL;
1301                         goto bad_res;
1302                 }
1303                 changed |= WIPHY_PARAM_RETRY_SHORT;
1304         }
1305
1306         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1307                 retry_long = nla_get_u8(
1308                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1309                 if (retry_long == 0) {
1310                         result = -EINVAL;
1311                         goto bad_res;
1312                 }
1313                 changed |= WIPHY_PARAM_RETRY_LONG;
1314         }
1315
1316         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1317                 frag_threshold = nla_get_u32(
1318                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1319                 if (frag_threshold < 256) {
1320                         result = -EINVAL;
1321                         goto bad_res;
1322                 }
1323                 if (frag_threshold != (u32) -1) {
1324                         /*
1325                          * Fragments (apart from the last one) are required to
1326                          * have even length. Make the fragmentation code
1327                          * simpler by stripping LSB should someone try to use
1328                          * odd threshold value.
1329                          */
1330                         frag_threshold &= ~0x1;
1331                 }
1332                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1333         }
1334
1335         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1336                 rts_threshold = nla_get_u32(
1337                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1338                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1339         }
1340
1341         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1342                 coverage_class = nla_get_u8(
1343                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1344                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1345         }
1346
1347         if (changed) {
1348                 u8 old_retry_short, old_retry_long;
1349                 u32 old_frag_threshold, old_rts_threshold;
1350                 u8 old_coverage_class;
1351
1352                 if (!rdev->ops->set_wiphy_params) {
1353                         result = -EOPNOTSUPP;
1354                         goto bad_res;
1355                 }
1356
1357                 old_retry_short = rdev->wiphy.retry_short;
1358                 old_retry_long = rdev->wiphy.retry_long;
1359                 old_frag_threshold = rdev->wiphy.frag_threshold;
1360                 old_rts_threshold = rdev->wiphy.rts_threshold;
1361                 old_coverage_class = rdev->wiphy.coverage_class;
1362
1363                 if (changed & WIPHY_PARAM_RETRY_SHORT)
1364                         rdev->wiphy.retry_short = retry_short;
1365                 if (changed & WIPHY_PARAM_RETRY_LONG)
1366                         rdev->wiphy.retry_long = retry_long;
1367                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1368                         rdev->wiphy.frag_threshold = frag_threshold;
1369                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1370                         rdev->wiphy.rts_threshold = rts_threshold;
1371                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1372                         rdev->wiphy.coverage_class = coverage_class;
1373
1374                 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1375                 if (result) {
1376                         rdev->wiphy.retry_short = old_retry_short;
1377                         rdev->wiphy.retry_long = old_retry_long;
1378                         rdev->wiphy.frag_threshold = old_frag_threshold;
1379                         rdev->wiphy.rts_threshold = old_rts_threshold;
1380                         rdev->wiphy.coverage_class = old_coverage_class;
1381                 }
1382         }
1383
1384  bad_res:
1385         mutex_unlock(&rdev->mtx);
1386         if (netdev)
1387                 dev_put(netdev);
1388         return result;
1389 }
1390
1391
1392 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1393                               struct cfg80211_registered_device *rdev,
1394                               struct net_device *dev)
1395 {
1396         void *hdr;
1397
1398         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1399         if (!hdr)
1400                 return -1;
1401
1402         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1403         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1404         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1405         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1406
1407         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1408                     rdev->devlist_generation ^
1409                         (cfg80211_rdev_list_generation << 2));
1410
1411         return genlmsg_end(msg, hdr);
1412
1413  nla_put_failure:
1414         genlmsg_cancel(msg, hdr);
1415         return -EMSGSIZE;
1416 }
1417
1418 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1419 {
1420         int wp_idx = 0;
1421         int if_idx = 0;
1422         int wp_start = cb->args[0];
1423         int if_start = cb->args[1];
1424         struct cfg80211_registered_device *rdev;
1425         struct wireless_dev *wdev;
1426
1427         mutex_lock(&cfg80211_mutex);
1428         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1429                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1430                         continue;
1431                 if (wp_idx < wp_start) {
1432                         wp_idx++;
1433                         continue;
1434                 }
1435                 if_idx = 0;
1436
1437                 mutex_lock(&rdev->devlist_mtx);
1438                 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1439                         if (if_idx < if_start) {
1440                                 if_idx++;
1441                                 continue;
1442                         }
1443                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1444                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
1445                                                rdev, wdev->netdev) < 0) {
1446                                 mutex_unlock(&rdev->devlist_mtx);
1447                                 goto out;
1448                         }
1449                         if_idx++;
1450                 }
1451                 mutex_unlock(&rdev->devlist_mtx);
1452
1453                 wp_idx++;
1454         }
1455  out:
1456         mutex_unlock(&cfg80211_mutex);
1457
1458         cb->args[0] = wp_idx;
1459         cb->args[1] = if_idx;
1460
1461         return skb->len;
1462 }
1463
1464 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1465 {
1466         struct sk_buff *msg;
1467         struct cfg80211_registered_device *dev = info->user_ptr[0];
1468         struct net_device *netdev = info->user_ptr[1];
1469
1470         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1471         if (!msg)
1472                 return -ENOMEM;
1473
1474         if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1475                                dev, netdev) < 0) {
1476                 nlmsg_free(msg);
1477                 return -ENOBUFS;
1478         }
1479
1480         return genlmsg_reply(msg, info);
1481 }
1482
1483 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1484         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1485         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1486         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1487         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1488         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1489 };
1490
1491 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1492 {
1493         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1494         int flag;
1495
1496         *mntrflags = 0;
1497
1498         if (!nla)
1499                 return -EINVAL;
1500
1501         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1502                              nla, mntr_flags_policy))
1503                 return -EINVAL;
1504
1505         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1506                 if (flags[flag])
1507                         *mntrflags |= (1<<flag);
1508
1509         return 0;
1510 }
1511
1512 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1513                                struct net_device *netdev, u8 use_4addr,
1514                                enum nl80211_iftype iftype)
1515 {
1516         if (!use_4addr) {
1517                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1518                         return -EBUSY;
1519                 return 0;
1520         }
1521
1522         switch (iftype) {
1523         case NL80211_IFTYPE_AP_VLAN:
1524                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1525                         return 0;
1526                 break;
1527         case NL80211_IFTYPE_STATION:
1528                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1529                         return 0;
1530                 break;
1531         default:
1532                 break;
1533         }
1534
1535         return -EOPNOTSUPP;
1536 }
1537
1538 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1539 {
1540         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1541         struct vif_params params;
1542         int err;
1543         enum nl80211_iftype otype, ntype;
1544         struct net_device *dev = info->user_ptr[1];
1545         u32 _flags, *flags = NULL;
1546         bool change = false;
1547
1548         memset(&params, 0, sizeof(params));
1549
1550         otype = ntype = dev->ieee80211_ptr->iftype;
1551
1552         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1553                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1554                 if (otype != ntype)
1555                         change = true;
1556                 if (ntype > NL80211_IFTYPE_MAX)
1557                         return -EINVAL;
1558         }
1559
1560         if (info->attrs[NL80211_ATTR_MESH_ID]) {
1561                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1562
1563                 if (ntype != NL80211_IFTYPE_MESH_POINT)
1564                         return -EINVAL;
1565                 if (netif_running(dev))
1566                         return -EBUSY;
1567
1568                 wdev_lock(wdev);
1569                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1570                              IEEE80211_MAX_MESH_ID_LEN);
1571                 wdev->mesh_id_up_len =
1572                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1573                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1574                        wdev->mesh_id_up_len);
1575                 wdev_unlock(wdev);
1576         }
1577
1578         if (info->attrs[NL80211_ATTR_4ADDR]) {
1579                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1580                 change = true;
1581                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1582                 if (err)
1583                         return err;
1584         } else {
1585                 params.use_4addr = -1;
1586         }
1587
1588         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1589                 if (ntype != NL80211_IFTYPE_MONITOR)
1590                         return -EINVAL;
1591                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1592                                           &_flags);
1593                 if (err)
1594                         return err;
1595
1596                 flags = &_flags;
1597                 change = true;
1598         }
1599
1600         if (change)
1601                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1602         else
1603                 err = 0;
1604
1605         if (!err && params.use_4addr != -1)
1606                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1607
1608         return err;
1609 }
1610
1611 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1612 {
1613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1614         struct vif_params params;
1615         struct net_device *dev;
1616         int err;
1617         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1618         u32 flags;
1619
1620         memset(&params, 0, sizeof(params));
1621
1622         if (!info->attrs[NL80211_ATTR_IFNAME])
1623                 return -EINVAL;
1624
1625         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1626                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1627                 if (type > NL80211_IFTYPE_MAX)
1628                         return -EINVAL;
1629         }
1630
1631         if (!rdev->ops->add_virtual_intf ||
1632             !(rdev->wiphy.interface_modes & (1 << type)))
1633                 return -EOPNOTSUPP;
1634
1635         if (info->attrs[NL80211_ATTR_4ADDR]) {
1636                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1637                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1638                 if (err)
1639                         return err;
1640         }
1641
1642         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1643                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1644                                   &flags);
1645         dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1646                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1647                 type, err ? NULL : &flags, &params);
1648         if (IS_ERR(dev))
1649                 return PTR_ERR(dev);
1650
1651         if (type == NL80211_IFTYPE_MESH_POINT &&
1652             info->attrs[NL80211_ATTR_MESH_ID]) {
1653                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1654
1655                 wdev_lock(wdev);
1656                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1657                              IEEE80211_MAX_MESH_ID_LEN);
1658                 wdev->mesh_id_up_len =
1659                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1660                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1661                        wdev->mesh_id_up_len);
1662                 wdev_unlock(wdev);
1663         }
1664
1665         return 0;
1666 }
1667
1668 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1669 {
1670         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1671         struct net_device *dev = info->user_ptr[1];
1672
1673         if (!rdev->ops->del_virtual_intf)
1674                 return -EOPNOTSUPP;
1675
1676         return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1677 }
1678
1679 struct get_key_cookie {
1680         struct sk_buff *msg;
1681         int error;
1682         int idx;
1683 };
1684
1685 static void get_key_callback(void *c, struct key_params *params)
1686 {
1687         struct nlattr *key;
1688         struct get_key_cookie *cookie = c;
1689
1690         if (params->key)
1691                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1692                         params->key_len, params->key);
1693
1694         if (params->seq)
1695                 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1696                         params->seq_len, params->seq);
1697
1698         if (params->cipher)
1699                 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1700                             params->cipher);
1701
1702         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1703         if (!key)
1704                 goto nla_put_failure;
1705
1706         if (params->key)
1707                 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1708                         params->key_len, params->key);
1709
1710         if (params->seq)
1711                 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1712                         params->seq_len, params->seq);
1713
1714         if (params->cipher)
1715                 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1716                             params->cipher);
1717
1718         NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1719
1720         nla_nest_end(cookie->msg, key);
1721
1722         return;
1723  nla_put_failure:
1724         cookie->error = 1;
1725 }
1726
1727 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1728 {
1729         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1730         int err;
1731         struct net_device *dev = info->user_ptr[1];
1732         u8 key_idx = 0;
1733         const u8 *mac_addr = NULL;
1734         bool pairwise;
1735         struct get_key_cookie cookie = {
1736                 .error = 0,
1737         };
1738         void *hdr;
1739         struct sk_buff *msg;
1740
1741         if (info->attrs[NL80211_ATTR_KEY_IDX])
1742                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1743
1744         if (key_idx > 5)
1745                 return -EINVAL;
1746
1747         if (info->attrs[NL80211_ATTR_MAC])
1748                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1749
1750         pairwise = !!mac_addr;
1751         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1752                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1753                 if (kt >= NUM_NL80211_KEYTYPES)
1754                         return -EINVAL;
1755                 if (kt != NL80211_KEYTYPE_GROUP &&
1756                     kt != NL80211_KEYTYPE_PAIRWISE)
1757                         return -EINVAL;
1758                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1759         }
1760
1761         if (!rdev->ops->get_key)
1762                 return -EOPNOTSUPP;
1763
1764         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1765         if (!msg)
1766                 return -ENOMEM;
1767
1768         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1769                              NL80211_CMD_NEW_KEY);
1770         if (IS_ERR(hdr))
1771                 return PTR_ERR(hdr);
1772
1773         cookie.msg = msg;
1774         cookie.idx = key_idx;
1775
1776         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1777         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1778         if (mac_addr)
1779                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1780
1781         if (pairwise && mac_addr &&
1782             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1783                 return -ENOENT;
1784
1785         err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1786                                  mac_addr, &cookie, get_key_callback);
1787
1788         if (err)
1789                 goto free_msg;
1790
1791         if (cookie.error)
1792                 goto nla_put_failure;
1793
1794         genlmsg_end(msg, hdr);
1795         return genlmsg_reply(msg, info);
1796
1797  nla_put_failure:
1798         err = -ENOBUFS;
1799  free_msg:
1800         nlmsg_free(msg);
1801         return err;
1802 }
1803
1804 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1805 {
1806         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1807         struct key_parse key;
1808         int err;
1809         struct net_device *dev = info->user_ptr[1];
1810
1811         err = nl80211_parse_key(info, &key);
1812         if (err)
1813                 return err;
1814
1815         if (key.idx < 0)
1816                 return -EINVAL;
1817
1818         /* only support setting default key */
1819         if (!key.def && !key.defmgmt)
1820                 return -EINVAL;
1821
1822         wdev_lock(dev->ieee80211_ptr);
1823
1824         if (key.def) {
1825                 if (!rdev->ops->set_default_key) {
1826                         err = -EOPNOTSUPP;
1827                         goto out;
1828                 }
1829
1830                 err = nl80211_key_allowed(dev->ieee80211_ptr);
1831                 if (err)
1832                         goto out;
1833
1834                 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1835                                                  key.def_uni, key.def_multi);
1836
1837                 if (err)
1838                         goto out;
1839
1840 #ifdef CONFIG_CFG80211_WEXT
1841                 dev->ieee80211_ptr->wext.default_key = key.idx;
1842 #endif
1843         } else {
1844                 if (key.def_uni || !key.def_multi) {
1845                         err = -EINVAL;
1846                         goto out;
1847                 }
1848
1849                 if (!rdev->ops->set_default_mgmt_key) {
1850                         err = -EOPNOTSUPP;
1851                         goto out;
1852                 }
1853
1854                 err = nl80211_key_allowed(dev->ieee80211_ptr);
1855                 if (err)
1856                         goto out;
1857
1858                 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1859                                                       dev, key.idx);
1860                 if (err)
1861                         goto out;
1862
1863 #ifdef CONFIG_CFG80211_WEXT
1864                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1865 #endif
1866         }
1867
1868  out:
1869         wdev_unlock(dev->ieee80211_ptr);
1870
1871         return err;
1872 }
1873
1874 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1875 {
1876         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1877         int err;
1878         struct net_device *dev = info->user_ptr[1];
1879         struct key_parse key;
1880         const u8 *mac_addr = NULL;
1881
1882         err = nl80211_parse_key(info, &key);
1883         if (err)
1884                 return err;
1885
1886         if (!key.p.key)
1887                 return -EINVAL;
1888
1889         if (info->attrs[NL80211_ATTR_MAC])
1890                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1891
1892         if (key.type == -1) {
1893                 if (mac_addr)
1894                         key.type = NL80211_KEYTYPE_PAIRWISE;
1895                 else
1896                         key.type = NL80211_KEYTYPE_GROUP;
1897         }
1898
1899         /* for now */
1900         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1901             key.type != NL80211_KEYTYPE_GROUP)
1902                 return -EINVAL;
1903
1904         if (!rdev->ops->add_key)
1905                 return -EOPNOTSUPP;
1906
1907         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1908                                            key.type == NL80211_KEYTYPE_PAIRWISE,
1909                                            mac_addr))
1910                 return -EINVAL;
1911
1912         wdev_lock(dev->ieee80211_ptr);
1913         err = nl80211_key_allowed(dev->ieee80211_ptr);
1914         if (!err)
1915                 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1916                                          key.type == NL80211_KEYTYPE_PAIRWISE,
1917                                          mac_addr, &key.p);
1918         wdev_unlock(dev->ieee80211_ptr);
1919
1920         return err;
1921 }
1922
1923 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1924 {
1925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1926         int err;
1927         struct net_device *dev = info->user_ptr[1];
1928         u8 *mac_addr = NULL;
1929         struct key_parse key;
1930
1931         err = nl80211_parse_key(info, &key);
1932         if (err)
1933                 return err;
1934
1935         if (info->attrs[NL80211_ATTR_MAC])
1936                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1937
1938         if (key.type == -1) {
1939                 if (mac_addr)
1940                         key.type = NL80211_KEYTYPE_PAIRWISE;
1941                 else
1942                         key.type = NL80211_KEYTYPE_GROUP;
1943         }
1944
1945         /* for now */
1946         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1947             key.type != NL80211_KEYTYPE_GROUP)
1948                 return -EINVAL;
1949
1950         if (!rdev->ops->del_key)
1951                 return -EOPNOTSUPP;
1952
1953         wdev_lock(dev->ieee80211_ptr);
1954         err = nl80211_key_allowed(dev->ieee80211_ptr);
1955
1956         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1957             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1958                 err = -ENOENT;
1959
1960         if (!err)
1961                 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1962                                          key.type == NL80211_KEYTYPE_PAIRWISE,
1963                                          mac_addr);
1964
1965 #ifdef CONFIG_CFG80211_WEXT
1966         if (!err) {
1967                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1968                         dev->ieee80211_ptr->wext.default_key = -1;
1969                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1970                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1971         }
1972 #endif
1973         wdev_unlock(dev->ieee80211_ptr);
1974
1975         return err;
1976 }
1977
1978 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1979 {
1980         int (*call)(struct wiphy *wiphy, struct net_device *dev,
1981                     struct beacon_parameters *info);
1982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1983         struct net_device *dev = info->user_ptr[1];
1984         struct wireless_dev *wdev = dev->ieee80211_ptr;
1985         struct beacon_parameters params;
1986         int haveinfo = 0, err;
1987
1988         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1989                 return -EINVAL;
1990
1991         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1992             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1993                 return -EOPNOTSUPP;
1994
1995         memset(&params, 0, sizeof(params));
1996
1997         switch (info->genlhdr->cmd) {
1998         case NL80211_CMD_NEW_BEACON:
1999                 /* these are required for NEW_BEACON */
2000                 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2001                     !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2002                     !info->attrs[NL80211_ATTR_BEACON_HEAD])
2003                         return -EINVAL;
2004
2005                 params.interval =
2006                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2007                 params.dtim_period =
2008                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2009
2010                 err = cfg80211_validate_beacon_int(rdev, params.interval);
2011                 if (err)
2012                         return err;
2013
2014                 call = rdev->ops->add_beacon;
2015                 break;
2016         case NL80211_CMD_SET_BEACON:
2017                 call = rdev->ops->set_beacon;
2018                 break;
2019         default:
2020                 WARN_ON(1);
2021                 return -EOPNOTSUPP;
2022         }
2023
2024         if (!call)
2025                 return -EOPNOTSUPP;
2026
2027         if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2028                 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2029                 params.head_len =
2030                     nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2031                 haveinfo = 1;
2032         }
2033
2034         if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2035                 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2036                 params.tail_len =
2037                     nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2038                 haveinfo = 1;
2039         }
2040
2041         if (!haveinfo)
2042                 return -EINVAL;
2043
2044         err = call(&rdev->wiphy, dev, &params);
2045         if (!err && params.interval)
2046                 wdev->beacon_interval = params.interval;
2047         return err;
2048 }
2049
2050 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2051 {
2052         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2053         struct net_device *dev = info->user_ptr[1];
2054         struct wireless_dev *wdev = dev->ieee80211_ptr;
2055         int err;
2056
2057         if (!rdev->ops->del_beacon)
2058                 return -EOPNOTSUPP;
2059
2060         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2061             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2062                 return -EOPNOTSUPP;
2063
2064         err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2065         if (!err)
2066                 wdev->beacon_interval = 0;
2067         return err;
2068 }
2069
2070 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2071         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2072         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2073         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2074         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2075         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2076 };
2077
2078 static int parse_station_flags(struct genl_info *info,
2079                                struct station_parameters *params)
2080 {
2081         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2082         struct nlattr *nla;
2083         int flag;
2084
2085         /*
2086          * Try parsing the new attribute first so userspace
2087          * can specify both for older kernels.
2088          */
2089         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2090         if (nla) {
2091                 struct nl80211_sta_flag_update *sta_flags;
2092
2093                 sta_flags = nla_data(nla);
2094                 params->sta_flags_mask = sta_flags->mask;
2095                 params->sta_flags_set = sta_flags->set;
2096                 if ((params->sta_flags_mask |
2097                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2098                         return -EINVAL;
2099                 return 0;
2100         }
2101
2102         /* if present, parse the old attribute */
2103
2104         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2105         if (!nla)
2106                 return 0;
2107
2108         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2109                              nla, sta_flags_policy))
2110                 return -EINVAL;
2111
2112         params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2113         params->sta_flags_mask &= ~1;
2114
2115         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2116                 if (flags[flag])
2117                         params->sta_flags_set |= (1<<flag);
2118
2119         return 0;
2120 }
2121
2122 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2123                                  int attr)
2124 {
2125         struct nlattr *rate;
2126         u16 bitrate;
2127
2128         rate = nla_nest_start(msg, attr);
2129         if (!rate)
2130                 goto nla_put_failure;
2131
2132         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2133         bitrate = cfg80211_calculate_bitrate(info);
2134         if (bitrate > 0)
2135                 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2136
2137         if (info->flags & RATE_INFO_FLAGS_MCS)
2138                 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2139         if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2140                 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2141         if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2142                 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2143
2144         nla_nest_end(msg, rate);
2145         return true;
2146
2147 nla_put_failure:
2148         return false;
2149 }
2150
2151 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2152                                 int flags, struct net_device *dev,
2153                                 const u8 *mac_addr, struct station_info *sinfo)
2154 {
2155         void *hdr;
2156         struct nlattr *sinfoattr, *bss_param;
2157
2158         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2159         if (!hdr)
2160                 return -1;
2161
2162         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2163         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2164
2165         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2166
2167         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2168         if (!sinfoattr)
2169                 goto nla_put_failure;
2170         if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2171                 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2172                             sinfo->connected_time);
2173         if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2174                 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2175                             sinfo->inactive_time);
2176         if (sinfo->filled & STATION_INFO_RX_BYTES)
2177                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2178                             sinfo->rx_bytes);
2179         if (sinfo->filled & STATION_INFO_TX_BYTES)
2180                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2181                             sinfo->tx_bytes);
2182         if (sinfo->filled & STATION_INFO_LLID)
2183                 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2184                             sinfo->llid);
2185         if (sinfo->filled & STATION_INFO_PLID)
2186                 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2187                             sinfo->plid);
2188         if (sinfo->filled & STATION_INFO_PLINK_STATE)
2189                 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2190                             sinfo->plink_state);
2191         if (sinfo->filled & STATION_INFO_SIGNAL)
2192                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2193                            sinfo->signal);
2194         if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2195                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2196                            sinfo->signal_avg);
2197         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2198                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2199                                           NL80211_STA_INFO_TX_BITRATE))
2200                         goto nla_put_failure;
2201         }
2202         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2203                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2204                                           NL80211_STA_INFO_RX_BITRATE))
2205                         goto nla_put_failure;
2206         }
2207         if (sinfo->filled & STATION_INFO_RX_PACKETS)
2208                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2209                             sinfo->rx_packets);
2210         if (sinfo->filled & STATION_INFO_TX_PACKETS)
2211                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2212                             sinfo->tx_packets);
2213         if (sinfo->filled & STATION_INFO_TX_RETRIES)
2214                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2215                             sinfo->tx_retries);
2216         if (sinfo->filled & STATION_INFO_TX_FAILED)
2217                 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2218                             sinfo->tx_failed);
2219         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2220                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2221                 if (!bss_param)
2222                         goto nla_put_failure;
2223
2224                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2225                         NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2226                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2227                         NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2228                 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2229                         NLA_PUT_FLAG(msg,
2230                                      NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2231                 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2232                            sinfo->bss_param.dtim_period);
2233                 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2234                             sinfo->bss_param.beacon_interval);
2235
2236                 nla_nest_end(msg, bss_param);
2237         }
2238         nla_nest_end(msg, sinfoattr);
2239
2240         return genlmsg_end(msg, hdr);
2241
2242  nla_put_failure:
2243         genlmsg_cancel(msg, hdr);
2244         return -EMSGSIZE;
2245 }
2246
2247 static int nl80211_dump_station(struct sk_buff *skb,
2248                                 struct netlink_callback *cb)
2249 {
2250         struct station_info sinfo;
2251         struct cfg80211_registered_device *dev;
2252         struct net_device *netdev;
2253         u8 mac_addr[ETH_ALEN];
2254         int sta_idx = cb->args[1];
2255         int err;
2256
2257         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2258         if (err)
2259                 return err;
2260
2261         if (!dev->ops->dump_station) {
2262                 err = -EOPNOTSUPP;
2263                 goto out_err;
2264         }
2265
2266         while (1) {
2267                 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2268                                              mac_addr, &sinfo);
2269                 if (err == -ENOENT)
2270                         break;
2271                 if (err)
2272                         goto out_err;
2273
2274                 if (nl80211_send_station(skb,
2275                                 NETLINK_CB(cb->skb).pid,
2276                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2277                                 netdev, mac_addr,
2278                                 &sinfo) < 0)
2279                         goto out;
2280
2281                 sta_idx++;
2282         }
2283
2284
2285  out:
2286         cb->args[1] = sta_idx;
2287         err = skb->len;
2288  out_err:
2289         nl80211_finish_netdev_dump(dev);
2290
2291         return err;
2292 }
2293
2294 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2295 {
2296         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2297         struct net_device *dev = info->user_ptr[1];
2298         struct station_info sinfo;
2299         struct sk_buff *msg;
2300         u8 *mac_addr = NULL;
2301         int err;
2302
2303         memset(&sinfo, 0, sizeof(sinfo));
2304
2305         if (!info->attrs[NL80211_ATTR_MAC])
2306                 return -EINVAL;
2307
2308         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2309
2310         if (!rdev->ops->get_station)
2311                 return -EOPNOTSUPP;
2312
2313         err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2314         if (err)
2315                 return err;
2316
2317         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2318         if (!msg)
2319                 return -ENOMEM;
2320
2321         if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2322                                  dev, mac_addr, &sinfo) < 0) {
2323                 nlmsg_free(msg);
2324                 return -ENOBUFS;
2325         }
2326
2327         return genlmsg_reply(msg, info);
2328 }
2329
2330 /*
2331  * Get vlan interface making sure it is running and on the right wiphy.
2332  */
2333 static int get_vlan(struct genl_info *info,
2334                     struct cfg80211_registered_device *rdev,
2335                     struct net_device **vlan)
2336 {
2337         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2338         *vlan = NULL;
2339
2340         if (vlanattr) {
2341                 *vlan = dev_get_by_index(genl_info_net(info),
2342                                          nla_get_u32(vlanattr));
2343                 if (!*vlan)
2344                         return -ENODEV;
2345                 if (!(*vlan)->ieee80211_ptr)
2346                         return -EINVAL;
2347                 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2348                         return -EINVAL;
2349                 if (!netif_running(*vlan))
2350                         return -ENETDOWN;
2351         }
2352         return 0;
2353 }
2354
2355 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2356 {
2357         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2358         int err;
2359         struct net_device *dev = info->user_ptr[1];
2360         struct station_parameters params;
2361         u8 *mac_addr = NULL;
2362
2363         memset(&params, 0, sizeof(params));
2364
2365         params.listen_interval = -1;
2366         params.plink_state = -1;
2367
2368         if (info->attrs[NL80211_ATTR_STA_AID])
2369                 return -EINVAL;
2370
2371         if (!info->attrs[NL80211_ATTR_MAC])
2372                 return -EINVAL;
2373
2374         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2375
2376         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2377                 params.supported_rates =
2378                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2379                 params.supported_rates_len =
2380                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2381         }
2382
2383         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2384                 params.listen_interval =
2385                     nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2386
2387         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2388                 params.ht_capa =
2389                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2390
2391         if (parse_station_flags(info, &params))
2392                 return -EINVAL;
2393
2394         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2395                 params.plink_action =
2396                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2397
2398         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2399                 params.plink_state =
2400                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2401
2402         err = get_vlan(info, rdev, &params.vlan);
2403         if (err)
2404                 goto out;
2405
2406         /* validate settings */
2407         err = 0;
2408
2409         switch (dev->ieee80211_ptr->iftype) {
2410         case NL80211_IFTYPE_AP:
2411         case NL80211_IFTYPE_AP_VLAN:
2412         case NL80211_IFTYPE_P2P_GO:
2413                 /* disallow mesh-specific things */
2414                 if (params.plink_action)
2415                         err = -EINVAL;
2416                 break;
2417         case NL80211_IFTYPE_P2P_CLIENT:
2418         case NL80211_IFTYPE_STATION:
2419                 /* disallow everything but AUTHORIZED flag */
2420                 if (params.plink_action)
2421                         err = -EINVAL;
2422                 if (params.vlan)
2423                         err = -EINVAL;
2424                 if (params.supported_rates)
2425                         err = -EINVAL;
2426                 if (params.ht_capa)
2427                         err = -EINVAL;
2428                 if (params.listen_interval >= 0)
2429                         err = -EINVAL;
2430                 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2431                         err = -EINVAL;
2432                 break;
2433         case NL80211_IFTYPE_MESH_POINT:
2434                 /* disallow things mesh doesn't support */
2435                 if (params.vlan)
2436                         err = -EINVAL;
2437                 if (params.ht_capa)
2438                         err = -EINVAL;
2439                 if (params.listen_interval >= 0)
2440                         err = -EINVAL;
2441                 if (params.sta_flags_mask &
2442                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2443                                   BIT(NL80211_STA_FLAG_MFP) |
2444                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
2445                         err = -EINVAL;
2446                 break;
2447         default:
2448                 err = -EINVAL;
2449         }
2450
2451         if (err)
2452                 goto out;
2453
2454         if (!rdev->ops->change_station) {
2455                 err = -EOPNOTSUPP;
2456                 goto out;
2457         }
2458
2459         err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2460
2461  out:
2462         if (params.vlan)
2463                 dev_put(params.vlan);
2464
2465         return err;
2466 }
2467
2468 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2469 {
2470         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2471         int err;
2472         struct net_device *dev = info->user_ptr[1];
2473         struct station_parameters params;
2474         u8 *mac_addr = NULL;
2475
2476         memset(&params, 0, sizeof(params));
2477
2478         if (!info->attrs[NL80211_ATTR_MAC])
2479                 return -EINVAL;
2480
2481         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2482                 return -EINVAL;
2483
2484         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2485                 return -EINVAL;
2486
2487         if (!info->attrs[NL80211_ATTR_STA_AID])
2488                 return -EINVAL;
2489
2490         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
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         params.listen_interval =
2496                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2497
2498         params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2499         if (!params.aid || params.aid > IEEE80211_MAX_AID)
2500                 return -EINVAL;
2501
2502         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2503                 params.ht_capa =
2504                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2505
2506         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2507                 params.plink_action =
2508                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2509
2510         if (parse_station_flags(info, &params))
2511                 return -EINVAL;
2512
2513         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2514             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2515             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2516             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2517                 return -EINVAL;
2518
2519         err = get_vlan(info, rdev, &params.vlan);
2520         if (err)
2521                 goto out;
2522
2523         /* validate settings */
2524         err = 0;
2525
2526         if (!rdev->ops->add_station) {
2527                 err = -EOPNOTSUPP;
2528                 goto out;
2529         }
2530
2531         err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2532
2533  out:
2534         if (params.vlan)
2535                 dev_put(params.vlan);
2536         return err;
2537 }
2538
2539 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2540 {
2541         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2542         struct net_device *dev = info->user_ptr[1];
2543         u8 *mac_addr = NULL;
2544
2545         if (info->attrs[NL80211_ATTR_MAC])
2546                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2547
2548         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2549             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2550             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2551             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2552                 return -EINVAL;
2553
2554         if (!rdev->ops->del_station)
2555                 return -EOPNOTSUPP;
2556
2557         return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2558 }
2559
2560 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2561                                 int flags, struct net_device *dev,
2562                                 u8 *dst, u8 *next_hop,
2563                                 struct mpath_info *pinfo)
2564 {
2565         void *hdr;
2566         struct nlattr *pinfoattr;
2567
2568         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2569         if (!hdr)
2570                 return -1;
2571
2572         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2573         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2574         NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2575
2576         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2577
2578         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2579         if (!pinfoattr)
2580                 goto nla_put_failure;
2581         if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2582                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2583                             pinfo->frame_qlen);
2584         if (pinfo->filled & MPATH_INFO_SN)
2585                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2586                             pinfo->sn);
2587         if (pinfo->filled & MPATH_INFO_METRIC)
2588                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2589                             pinfo->metric);
2590         if (pinfo->filled & MPATH_INFO_EXPTIME)
2591                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2592                             pinfo->exptime);
2593         if (pinfo->filled & MPATH_INFO_FLAGS)
2594                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2595                             pinfo->flags);
2596         if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2597                 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2598                             pinfo->discovery_timeout);
2599         if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2600                 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2601                             pinfo->discovery_retries);
2602
2603         nla_nest_end(msg, pinfoattr);
2604
2605         return genlmsg_end(msg, hdr);
2606
2607  nla_put_failure:
2608         genlmsg_cancel(msg, hdr);
2609         return -EMSGSIZE;
2610 }
2611
2612 static int nl80211_dump_mpath(struct sk_buff *skb,
2613                               struct netlink_callback *cb)
2614 {
2615         struct mpath_info pinfo;
2616         struct cfg80211_registered_device *dev;
2617         struct net_device *netdev;
2618         u8 dst[ETH_ALEN];
2619         u8 next_hop[ETH_ALEN];
2620         int path_idx = cb->args[1];
2621         int err;
2622
2623         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2624         if (err)
2625                 return err;
2626
2627         if (!dev->ops->dump_mpath) {
2628                 err = -EOPNOTSUPP;
2629                 goto out_err;
2630         }
2631
2632         if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2633                 err = -EOPNOTSUPP;
2634                 goto out_err;
2635         }
2636
2637         while (1) {
2638                 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2639                                            dst, next_hop, &pinfo);
2640                 if (err == -ENOENT)
2641                         break;
2642                 if (err)
2643                         goto out_err;
2644
2645                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2646                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
2647                                        netdev, dst, next_hop,
2648                                        &pinfo) < 0)
2649                         goto out;
2650
2651                 path_idx++;
2652         }
2653
2654
2655  out:
2656         cb->args[1] = path_idx;
2657         err = skb->len;
2658  out_err:
2659         nl80211_finish_netdev_dump(dev);
2660         return err;
2661 }
2662
2663 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2664 {
2665         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2666         int err;
2667         struct net_device *dev = info->user_ptr[1];
2668         struct mpath_info pinfo;
2669         struct sk_buff *msg;
2670         u8 *dst = NULL;
2671         u8 next_hop[ETH_ALEN];
2672
2673         memset(&pinfo, 0, sizeof(pinfo));
2674
2675         if (!info->attrs[NL80211_ATTR_MAC])
2676                 return -EINVAL;
2677
2678         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2679
2680         if (!rdev->ops->get_mpath)
2681                 return -EOPNOTSUPP;
2682
2683         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2684                 return -EOPNOTSUPP;
2685
2686         err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2687         if (err)
2688                 return err;
2689
2690         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2691         if (!msg)
2692                 return -ENOMEM;
2693
2694         if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2695                                  dev, dst, next_hop, &pinfo) < 0) {
2696                 nlmsg_free(msg);
2697                 return -ENOBUFS;
2698         }
2699
2700         return genlmsg_reply(msg, info);
2701 }
2702
2703 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2704 {
2705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2706         struct net_device *dev = info->user_ptr[1];
2707         u8 *dst = NULL;
2708         u8 *next_hop = NULL;
2709
2710         if (!info->attrs[NL80211_ATTR_MAC])
2711                 return -EINVAL;
2712
2713         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2714                 return -EINVAL;
2715
2716         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2717         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2718
2719         if (!rdev->ops->change_mpath)
2720                 return -EOPNOTSUPP;
2721
2722         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2723                 return -EOPNOTSUPP;
2724
2725         return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2726 }
2727
2728 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2729 {
2730         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2731         struct net_device *dev = info->user_ptr[1];
2732         u8 *dst = NULL;
2733         u8 *next_hop = NULL;
2734
2735         if (!info->attrs[NL80211_ATTR_MAC])
2736                 return -EINVAL;
2737
2738         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2739                 return -EINVAL;
2740
2741         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2742         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2743
2744         if (!rdev->ops->add_mpath)
2745                 return -EOPNOTSUPP;
2746
2747         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2748                 return -EOPNOTSUPP;
2749
2750         return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2751 }
2752
2753 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2754 {
2755         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2756         struct net_device *dev = info->user_ptr[1];
2757         u8 *dst = NULL;
2758
2759         if (info->attrs[NL80211_ATTR_MAC])
2760                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2761
2762         if (!rdev->ops->del_mpath)
2763                 return -EOPNOTSUPP;
2764
2765         return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2766 }
2767
2768 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2769 {
2770         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2771         struct net_device *dev = info->user_ptr[1];
2772         struct bss_parameters params;
2773
2774         memset(&params, 0, sizeof(params));
2775         /* default to not changing parameters */
2776         params.use_cts_prot = -1;
2777         params.use_short_preamble = -1;
2778         params.use_short_slot_time = -1;
2779         params.ap_isolate = -1;
2780         params.ht_opmode = -1;
2781
2782         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2783                 params.use_cts_prot =
2784                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2785         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2786                 params.use_short_preamble =
2787                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2788         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2789                 params.use_short_slot_time =
2790                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2791         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2792                 params.basic_rates =
2793                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2794                 params.basic_rates_len =
2795                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2796         }
2797         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2798                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2799         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2800                 params.ht_opmode =
2801                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2802
2803         if (!rdev->ops->change_bss)
2804                 return -EOPNOTSUPP;
2805
2806         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2807             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2808                 return -EOPNOTSUPP;
2809
2810         return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2811 }
2812
2813 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2814         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
2815         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
2816         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
2817         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
2818         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
2819         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
2820 };
2821
2822 static int parse_reg_rule(struct nlattr *tb[],
2823         struct ieee80211_reg_rule *reg_rule)
2824 {
2825         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2826         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2827
2828         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2829                 return -EINVAL;
2830         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2831                 return -EINVAL;
2832         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2833                 return -EINVAL;
2834         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2835                 return -EINVAL;
2836         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2837                 return -EINVAL;
2838
2839         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2840
2841         freq_range->start_freq_khz =
2842                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2843         freq_range->end_freq_khz =
2844                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2845         freq_range->max_bandwidth_khz =
2846                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2847
2848         power_rule->max_eirp =
2849                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2850
2851         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2852                 power_rule->max_antenna_gain =
2853                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2854
2855         return 0;
2856 }
2857
2858 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2859 {
2860         int r;
2861         char *data = NULL;
2862
2863         /*
2864          * You should only get this when cfg80211 hasn't yet initialized
2865          * completely when built-in to the kernel right between the time
2866          * window between nl80211_init() and regulatory_init(), if that is
2867          * even possible.
2868          */
2869         mutex_lock(&cfg80211_mutex);
2870         if (unlikely(!cfg80211_regdomain)) {
2871                 mutex_unlock(&cfg80211_mutex);
2872                 return -EINPROGRESS;
2873         }
2874         mutex_unlock(&cfg80211_mutex);
2875
2876         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2877                 return -EINVAL;
2878
2879         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2880
2881         r = regulatory_hint_user(data);
2882
2883         return r;
2884 }
2885
2886 static int nl80211_get_mesh_config(struct sk_buff *skb,
2887                                    struct genl_info *info)
2888 {
2889         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2890         struct net_device *dev = info->user_ptr[1];
2891         struct wireless_dev *wdev = dev->ieee80211_ptr;
2892         struct mesh_config cur_params;
2893         int err = 0;
2894         void *hdr;
2895         struct nlattr *pinfoattr;
2896         struct sk_buff *msg;
2897
2898         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2899                 return -EOPNOTSUPP;
2900
2901         if (!rdev->ops->get_mesh_config)
2902                 return -EOPNOTSUPP;
2903
2904         wdev_lock(wdev);
2905         /* If not connected, get default parameters */
2906         if (!wdev->mesh_id_len)
2907                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
2908         else
2909                 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
2910                                                  &cur_params);
2911         wdev_unlock(wdev);
2912
2913         if (err)
2914                 return err;
2915
2916         /* Draw up a netlink message to send back */
2917         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2918         if (!msg)
2919                 return -ENOMEM;
2920         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2921                              NL80211_CMD_GET_MESH_CONFIG);
2922         if (!hdr)
2923                 goto out;
2924         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
2925         if (!pinfoattr)
2926                 goto nla_put_failure;
2927         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2928         NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2929                         cur_params.dot11MeshRetryTimeout);
2930         NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2931                         cur_params.dot11MeshConfirmTimeout);
2932         NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2933                         cur_params.dot11MeshHoldingTimeout);
2934         NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2935                         cur_params.dot11MeshMaxPeerLinks);
2936         NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2937                         cur_params.dot11MeshMaxRetries);
2938         NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2939                         cur_params.dot11MeshTTL);
2940         NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
2941                         cur_params.element_ttl);
2942         NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2943                         cur_params.auto_open_plinks);
2944         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2945                         cur_params.dot11MeshHWMPmaxPREQretries);
2946         NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2947                         cur_params.path_refresh_time);
2948         NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2949                         cur_params.min_discovery_timeout);
2950         NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2951                         cur_params.dot11MeshHWMPactivePathTimeout);
2952         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2953                         cur_params.dot11MeshHWMPpreqMinInterval);
2954         NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2955                         cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2956         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2957                         cur_params.dot11MeshHWMPRootMode);
2958         nla_nest_end(msg, pinfoattr);
2959         genlmsg_end(msg, hdr);
2960         return genlmsg_reply(msg, info);
2961
2962  nla_put_failure:
2963         genlmsg_cancel(msg, hdr);
2964  out:
2965         nlmsg_free(msg);
2966         return -ENOBUFS;
2967 }
2968
2969 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2970         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2971         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2972         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2973         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2974         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2975         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2976         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
2977         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2978
2979         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2980         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2981         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2982         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2983         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2984         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2985 };
2986
2987 static const struct nla_policy
2988         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
2989         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
2990         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
2991         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
2992         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
2993                 .len = IEEE80211_MAX_DATA_LEN },
2994         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
2995 };
2996
2997 static int nl80211_parse_mesh_config(struct genl_info *info,
2998                                      struct mesh_config *cfg,
2999                                      u32 *mask_out)
3000 {
3001         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3002         u32 mask = 0;
3003
3004 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3005 do {\
3006         if (table[attr_num]) {\
3007                 cfg->param = nla_fn(table[attr_num]); \
3008                 mask |= (1 << (attr_num - 1)); \
3009         } \
3010 } while (0);\
3011
3012
3013         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3014                 return -EINVAL;
3015         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3016                              info->attrs[NL80211_ATTR_MESH_CONFIG],
3017                              nl80211_meshconf_params_policy))
3018                 return -EINVAL;
3019
3020         /* This makes sure that there aren't more than 32 mesh config
3021          * parameters (otherwise our bitfield scheme would not work.) */
3022         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3023
3024         /* Fill in the params struct */
3025         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3026                         mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3027         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3028                         mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3029         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3030                         mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3031         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3032                         mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3033         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3034                         mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3035         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3036                         mask, NL80211_MESHCONF_TTL, nla_get_u8);
3037         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3038                         mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3039         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3040                         mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3041         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3042                         mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3043                         nla_get_u8);
3044         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3045                         mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3046         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3047                         mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3048                         nla_get_u16);
3049         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3050                         mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3051                         nla_get_u32);
3052         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3053                         mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3054                         nla_get_u16);
3055         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3056                         dot11MeshHWMPnetDiameterTraversalTime,
3057                         mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3058                         nla_get_u16);
3059         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3060                         dot11MeshHWMPRootMode, mask,
3061                         NL80211_MESHCONF_HWMP_ROOTMODE,
3062                         nla_get_u8);
3063         if (mask_out)
3064                 *mask_out = mask;
3065
3066         return 0;
3067
3068 #undef FILL_IN_MESH_PARAM_IF_SET
3069 }
3070
3071 static int nl80211_parse_mesh_setup(struct genl_info *info,
3072                                      struct mesh_setup *setup)
3073 {
3074         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3075
3076         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3077                 return -EINVAL;
3078         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3079                              info->attrs[NL80211_ATTR_MESH_SETUP],
3080                              nl80211_mesh_setup_params_policy))
3081                 return -EINVAL;
3082
3083         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3084                 setup->path_sel_proto =
3085                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3086                  IEEE80211_PATH_PROTOCOL_VENDOR :
3087                  IEEE80211_PATH_PROTOCOL_HWMP;
3088
3089         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3090                 setup->path_metric =
3091                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3092                  IEEE80211_PATH_METRIC_VENDOR :
3093                  IEEE80211_PATH_METRIC_AIRTIME;
3094
3095
3096         if (tb[NL80211_MESH_SETUP_IE]) {
3097                 struct nlattr *ieattr =
3098                         tb[NL80211_MESH_SETUP_IE];
3099                 if (!is_valid_ie_attr(ieattr))
3100                         return -EINVAL;
3101                 setup->ie = nla_data(ieattr);
3102                 setup->ie_len = nla_len(ieattr);
3103         }
3104         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3105         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3106
3107         return 0;
3108 }
3109
3110 static int nl80211_update_mesh_config(struct sk_buff *skb,
3111                                       struct genl_info *info)
3112 {
3113         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3114         struct net_device *dev = info->user_ptr[1];
3115         struct wireless_dev *wdev = dev->ieee80211_ptr;
3116         struct mesh_config cfg;
3117         u32 mask;
3118         int err;
3119
3120         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3121                 return -EOPNOTSUPP;
3122
3123         if (!rdev->ops->update_mesh_config)
3124                 return -EOPNOTSUPP;
3125
3126         err = nl80211_parse_mesh_config(info, &cfg, &mask);
3127         if (err)
3128                 return err;
3129
3130         wdev_lock(wdev);
3131         if (!wdev->mesh_id_len)
3132                 err = -ENOLINK;
3133
3134         if (!err)
3135                 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3136                                                     mask, &cfg);
3137
3138         wdev_unlock(wdev);
3139
3140         return err;
3141 }
3142
3143 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3144 {
3145         struct sk_buff *msg;
3146         void *hdr = NULL;
3147         struct nlattr *nl_reg_rules;
3148         unsigned int i;
3149         int err = -EINVAL;
3150
3151         mutex_lock(&cfg80211_mutex);
3152
3153         if (!cfg80211_regdomain)
3154                 goto out;
3155
3156         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3157         if (!msg) {
3158                 err = -ENOBUFS;
3159                 goto out;
3160         }
3161
3162         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3163                              NL80211_CMD_GET_REG);
3164         if (!hdr)
3165                 goto put_failure;
3166
3167         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3168                 cfg80211_regdomain->alpha2);
3169
3170         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3171         if (!nl_reg_rules)
3172                 goto nla_put_failure;
3173
3174         for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3175                 struct nlattr *nl_reg_rule;
3176                 const struct ieee80211_reg_rule *reg_rule;
3177                 const struct ieee80211_freq_range *freq_range;
3178                 const struct ieee80211_power_rule *power_rule;
3179
3180                 reg_rule = &cfg80211_regdomain->reg_rules[i];
3181                 freq_range = &reg_rule->freq_range;
3182                 power_rule = &reg_rule->power_rule;
3183
3184                 nl_reg_rule = nla_nest_start(msg, i);
3185                 if (!nl_reg_rule)
3186                         goto nla_put_failure;
3187
3188                 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3189                         reg_rule->flags);
3190                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3191                         freq_range->start_freq_khz);
3192                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3193                         freq_range->end_freq_khz);
3194                 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3195                         freq_range->max_bandwidth_khz);
3196                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3197                         power_rule->max_antenna_gain);
3198                 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3199                         power_rule->max_eirp);
3200
3201                 nla_nest_end(msg, nl_reg_rule);
3202         }
3203
3204         nla_nest_end(msg, nl_reg_rules);
3205
3206         genlmsg_end(msg, hdr);
3207         err = genlmsg_reply(msg, info);
3208         goto out;
3209
3210 nla_put_failure:
3211         genlmsg_cancel(msg, hdr);
3212 put_failure:
3213         nlmsg_free(msg);
3214         err = -EMSGSIZE;
3215 out:
3216         mutex_unlock(&cfg80211_mutex);
3217         return err;
3218 }
3219
3220 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3221 {
3222         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3223         struct nlattr *nl_reg_rule;
3224         char *alpha2 = NULL;
3225         int rem_reg_rules = 0, r = 0;
3226         u32 num_rules = 0, rule_idx = 0, size_of_regd;
3227         struct ieee80211_regdomain *rd = NULL;
3228
3229         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3230                 return -EINVAL;
3231
3232         if (!info->attrs[NL80211_ATTR_REG_RULES])
3233                 return -EINVAL;
3234
3235         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3236
3237         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3238                         rem_reg_rules) {
3239                 num_rules++;
3240                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3241                         return -EINVAL;
3242         }
3243
3244         mutex_lock(&cfg80211_mutex);
3245
3246         if (!reg_is_valid_request(alpha2)) {
3247                 r = -EINVAL;
3248                 goto bad_reg;
3249         }
3250
3251         size_of_regd = sizeof(struct ieee80211_regdomain) +
3252                 (num_rules * sizeof(struct ieee80211_reg_rule));
3253
3254         rd = kzalloc(size_of_regd, GFP_KERNEL);
3255         if (!rd) {
3256                 r = -ENOMEM;
3257                 goto bad_reg;
3258         }
3259
3260         rd->n_reg_rules = num_rules;
3261         rd->alpha2[0] = alpha2[0];
3262         rd->alpha2[1] = alpha2[1];
3263
3264         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3265                         rem_reg_rules) {
3266                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3267                         nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3268                         reg_rule_policy);
3269                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3270                 if (r)
3271                         goto bad_reg;
3272
3273                 rule_idx++;
3274
3275                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3276                         r = -EINVAL;
3277                         goto bad_reg;
3278                 }
3279         }
3280
3281         BUG_ON(rule_idx != num_rules);
3282
3283         r = set_regdom(rd);
3284
3285         mutex_unlock(&cfg80211_mutex);
3286
3287         return r;
3288
3289  bad_reg:
3290         mutex_unlock(&cfg80211_mutex);
3291         kfree(rd);
3292         return r;
3293 }
3294
3295 static int validate_scan_freqs(struct nlattr *freqs)
3296 {
3297         struct nlattr *attr1, *attr2;
3298         int n_channels = 0, tmp1, tmp2;
3299
3300         nla_for_each_nested(attr1, freqs, tmp1) {
3301                 n_channels++;
3302                 /*
3303                  * Some hardware has a limited channel list for
3304                  * scanning, and it is pretty much nonsensical
3305                  * to scan for a channel twice, so disallow that
3306                  * and don't require drivers to check that the
3307                  * channel list they get isn't longer than what
3308                  * they can scan, as long as they can scan all
3309                  * the channels they registered at once.
3310                  */
3311                 nla_for_each_nested(attr2, freqs, tmp2)
3312                         if (attr1 != attr2 &&
3313                             nla_get_u32(attr1) == nla_get_u32(attr2))
3314                                 return 0;
3315         }
3316
3317         return n_channels;
3318 }
3319
3320 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3321 {
3322         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3323         struct net_device *dev = info->user_ptr[1];
3324         struct cfg80211_scan_request *request;
3325         struct nlattr *attr;
3326         struct wiphy *wiphy;
3327         int err, tmp, n_ssids = 0, n_channels, i;
3328         size_t ie_len;
3329
3330         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3331                 return -EINVAL;
3332
3333         wiphy = &rdev->wiphy;
3334
3335         if (!rdev->ops->scan)
3336                 return -EOPNOTSUPP;
3337
3338         if (rdev->scan_req)
3339                 return -EBUSY;
3340
3341         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3342                 n_channels = validate_scan_freqs(
3343                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3344                 if (!n_channels)
3345                         return -EINVAL;
3346         } else {
3347                 enum ieee80211_band band;
3348                 n_channels = 0;
3349
3350                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3351                         if (wiphy->bands[band])
3352                                 n_channels += wiphy->bands[band]->n_channels;
3353         }
3354
3355         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3356                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3357                         n_ssids++;
3358
3359         if (n_ssids > wiphy->max_scan_ssids)
3360                 return -EINVAL;
3361
3362         if (info->attrs[NL80211_ATTR_IE])
3363                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3364         else
3365                 ie_len = 0;
3366
3367         if (ie_len > wiphy->max_scan_ie_len)
3368                 return -EINVAL;
3369
3370         request = kzalloc(sizeof(*request)
3371                         + sizeof(*request->ssids) * n_ssids
3372                         + sizeof(*request->channels) * n_channels
3373                         + ie_len, GFP_KERNEL);
3374         if (!request)
3375                 return -ENOMEM;
3376
3377         if (n_ssids)
3378                 request->ssids = (void *)&request->channels[n_channels];
3379         request->n_ssids = n_ssids;
3380         if (ie_len) {
3381                 if (request->ssids)
3382                         request->ie = (void *)(request->ssids + n_ssids);
3383                 else
3384                         request->ie = (void *)(request->channels + n_channels);
3385         }
3386
3387         i = 0;
3388         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3389                 /* user specified, bail out if channel not found */
3390                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3391                         struct ieee80211_channel *chan;
3392
3393                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3394
3395                         if (!chan) {
3396                                 err = -EINVAL;
3397                                 goto out_free;
3398                         }
3399
3400                         /* ignore disabled channels */
3401                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3402                                 continue;
3403
3404                         request->channels[i] = chan;
3405                         i++;
3406                 }
3407         } else {
3408                 enum ieee80211_band band;
3409
3410                 /* all channels */
3411                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3412                         int j;
3413                         if (!wiphy->bands[band])
3414                                 continue;
3415                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3416                                 struct ieee80211_channel *chan;
3417
3418                                 chan = &wiphy->bands[band]->channels[j];
3419
3420                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3421                                         continue;
3422
3423                                 request->channels[i] = chan;
3424                                 i++;
3425                         }
3426                 }
3427         }
3428
3429         if (!i) {
3430                 err = -EINVAL;
3431                 goto out_free;
3432         }
3433
3434         request->n_channels = i;
3435
3436         i = 0;
3437         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3438                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3439                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3440                                 err = -EINVAL;
3441                                 goto out_free;
3442                         }
3443                         request->ssids[i].ssid_len = nla_len(attr);
3444                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3445                         i++;
3446                 }
3447         }
3448
3449         if (info->attrs[NL80211_ATTR_IE]) {
3450                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3451                 memcpy((void *)request->ie,
3452                        nla_data(info->attrs[NL80211_ATTR_IE]),
3453                        request->ie_len);
3454         }
3455
3456         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3457                 if (wiphy->bands[i])
3458                         request->rates[i] =
3459                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
3460
3461         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3462                 nla_for_each_nested(attr,
3463                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3464                                     tmp) {
3465                         enum ieee80211_band band = nla_type(attr);
3466
3467                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3468                                 err = -EINVAL;
3469                                 goto out_free;
3470                         }
3471                         err = ieee80211_get_ratemask(wiphy->bands[band],
3472                                                      nla_data(attr),
3473                                                      nla_len(attr),
3474                                                      &request->rates[band]);
3475                         if (err)
3476                                 goto out_free;
3477                 }
3478         }
3479
3480         request->dev = dev;
3481         request->wiphy = &rdev->wiphy;
3482
3483         rdev->scan_req = request;
3484         err = rdev->ops->scan(&rdev->wiphy, dev, request);
3485
3486         if (!err) {
3487                 nl80211_send_scan_start(rdev, dev);
3488                 dev_hold(dev);
3489         } else {
3490  out_free:
3491                 rdev->scan_req = NULL;
3492                 kfree(request);
3493         }
3494
3495         return err;
3496 }
3497
3498 static int nl80211_start_sched_scan(struct sk_buff *skb,
3499                                     struct genl_info *info)
3500 {
3501         struct cfg80211_sched_scan_request *request;
3502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3503         struct net_device *dev = info->user_ptr[1];
3504         struct nlattr *attr;
3505         struct wiphy *wiphy;
3506         int err, tmp, n_ssids = 0, n_channels, i;
3507         u32 interval;
3508         enum ieee80211_band band;
3509         size_t ie_len;
3510
3511         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3512             !rdev->ops->sched_scan_start)
3513                 return -EOPNOTSUPP;
3514
3515         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3516                 return -EINVAL;
3517
3518         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3519                 return -EINVAL;
3520
3521         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3522         if (interval == 0)
3523                 return -EINVAL;
3524
3525         wiphy = &rdev->wiphy;
3526
3527         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3528                 n_channels = validate_scan_freqs(
3529                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3530                 if (!n_channels)
3531                         return -EINVAL;
3532         } else {
3533                 n_channels = 0;
3534
3535                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3536                         if (wiphy->bands[band])
3537                                 n_channels += wiphy->bands[band]->n_channels;
3538         }
3539
3540         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3541                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3542                                     tmp)
3543                         n_ssids++;
3544
3545         if (n_ssids > wiphy->max_sched_scan_ssids)
3546                 return -EINVAL;
3547
3548         if (info->attrs[NL80211_ATTR_IE])
3549                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3550         else
3551                 ie_len = 0;
3552
3553         if (ie_len > wiphy->max_sched_scan_ie_len)
3554                 return -EINVAL;
3555
3556         mutex_lock(&rdev->sched_scan_mtx);
3557
3558         if (rdev->sched_scan_req) {
3559                 err = -EINPROGRESS;
3560                 goto out;
3561         }
3562
3563         request = kzalloc(sizeof(*request)
3564                         + sizeof(*request->ssids) * n_ssids
3565                         + sizeof(*request->channels) * n_channels
3566                         + ie_len, GFP_KERNEL);
3567         if (!request) {
3568                 err = -ENOMEM;
3569                 goto out;
3570         }
3571
3572         if (n_ssids)
3573                 request->ssids = (void *)&request->channels[n_channels];
3574         request->n_ssids = n_ssids;
3575         if (ie_len) {
3576                 if (request->ssids)
3577                         request->ie = (void *)(request->ssids + n_ssids);
3578                 else
3579                         request->ie = (void *)(request->channels + n_channels);
3580         }
3581
3582         i = 0;
3583         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3584                 /* user specified, bail out if channel not found */
3585                 nla_for_each_nested(attr,
3586                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3587                                     tmp) {
3588                         struct ieee80211_channel *chan;
3589
3590                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3591
3592                         if (!chan) {
3593                                 err = -EINVAL;
3594                                 goto out_free;
3595                         }
3596
3597                         /* ignore disabled channels */
3598                         if (chan->flags & IEEE80211_CHAN_DISABLED)
3599                                 continue;
3600
3601                         request->channels[i] = chan;
3602                         i++;
3603                 }
3604         } else {
3605                 /* all channels */
3606                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3607                         int j;
3608                         if (!wiphy->bands[band])
3609                                 continue;
3610                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3611                                 struct ieee80211_channel *chan;
3612
3613                                 chan = &wiphy->bands[band]->channels[j];
3614
3615                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
3616                                         continue;
3617
3618                                 request->channels[i] = chan;
3619                                 i++;
3620                         }
3621                 }
3622         }
3623
3624         if (!i) {
3625                 err = -EINVAL;
3626                 goto out_free;
3627         }
3628
3629         request->n_channels = i;
3630
3631         i = 0;
3632         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3633                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3634                                     tmp) {
3635                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3636                                 err = -EINVAL;
3637                                 goto out_free;
3638                         }
3639                         request->ssids[i].ssid_len = nla_len(attr);
3640                         memcpy(request->ssids[i].ssid, nla_data(attr),
3641                                nla_len(attr));
3642                         i++;
3643                 }
3644         }
3645
3646         if (info->attrs[NL80211_ATTR_IE]) {
3647                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3648                 memcpy((void *)request->ie,
3649                        nla_data(info->attrs[NL80211_ATTR_IE]),
3650                        request->ie_len);
3651         }
3652
3653         request->dev = dev;
3654         request->wiphy = &rdev->wiphy;
3655         request->interval = interval;
3656
3657         err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3658         if (!err) {
3659                 rdev->sched_scan_req = request;
3660                 nl80211_send_sched_scan(rdev, dev,
3661                                         NL80211_CMD_START_SCHED_SCAN);
3662                 goto out;
3663         }
3664
3665 out_free:
3666         kfree(request);
3667 out:
3668         mutex_unlock(&rdev->sched_scan_mtx);
3669         return err;
3670 }
3671
3672 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3673                                    struct genl_info *info)
3674 {
3675         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3676         int err;
3677
3678         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3679             !rdev->ops->sched_scan_stop)
3680                 return -EOPNOTSUPP;
3681
3682         mutex_lock(&rdev->sched_scan_mtx);
3683         err = __cfg80211_stop_sched_scan(rdev, false);
3684         mutex_unlock(&rdev->sched_scan_mtx);
3685
3686         return err;
3687 }
3688
3689 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3690                             u32 seq, int flags,
3691                             struct cfg80211_registered_device *rdev,
3692                             struct wireless_dev *wdev,
3693                             struct cfg80211_internal_bss *intbss)
3694 {
3695         struct cfg80211_bss *res = &intbss->pub;
3696         void *hdr;
3697         struct nlattr *bss;
3698         int i;
3699
3700         ASSERT_WDEV_LOCK(wdev);
3701
3702         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3703                              NL80211_CMD_NEW_SCAN_RESULTS);
3704         if (!hdr)
3705                 return -1;
3706
3707         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3708
3709         NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3710         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3711
3712         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3713         if (!bss)
3714                 goto nla_put_failure;
3715         if (!is_zero_ether_addr(res->bssid))
3716                 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3717         if (res->information_elements && res->len_information_elements)
3718                 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3719                         res->len_information_elements,
3720                         res->information_elements);
3721         if (res->beacon_ies && res->len_beacon_ies &&
3722             res->beacon_ies != res->information_elements)
3723                 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3724                         res->len_beacon_ies, res->beacon_ies);
3725         if (res->tsf)
3726                 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3727         if (res->beacon_interval)
3728                 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3729         NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3730         NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3731         NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3732                 jiffies_to_msecs(jiffies - intbss->ts));
3733
3734         switch (rdev->wiphy.signal_type) {
3735         case CFG80211_SIGNAL_TYPE_MBM:
3736                 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3737                 break;
3738         case CFG80211_SIGNAL_TYPE_UNSPEC:
3739                 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3740                 break;
3741         default:
3742                 break;
3743         }
3744
3745         switch (wdev->iftype) {
3746         case NL80211_IFTYPE_P2P_CLIENT:
3747         case NL80211_IFTYPE_STATION:
3748                 if (intbss == wdev->current_bss)
3749                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3750                                     NL80211_BSS_STATUS_ASSOCIATED);
3751                 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3752                         if (intbss != wdev->auth_bsses[i])
3753                                 continue;
3754                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3755                                     NL80211_BSS_STATUS_AUTHENTICATED);
3756                         break;
3757                 }
3758                 break;
3759         case NL80211_IFTYPE_ADHOC:
3760                 if (intbss == wdev->current_bss)
3761                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3762                                     NL80211_BSS_STATUS_IBSS_JOINED);
3763                 break;
3764         default:
3765                 break;
3766         }
3767
3768         nla_nest_end(msg, bss);
3769
3770         return genlmsg_end(msg, hdr);
3771
3772  nla_put_failure:
3773         genlmsg_cancel(msg, hdr);
3774         return -EMSGSIZE;
3775 }
3776
3777 static int nl80211_dump_scan(struct sk_buff *skb,
3778                              struct netlink_callback *cb)
3779 {
3780         struct cfg80211_registered_device *rdev;
3781         struct net_device *dev;
3782         struct cfg80211_internal_bss *scan;
3783         struct wireless_dev *wdev;
3784         int start = cb->args[1], idx = 0;
3785         int err;
3786
3787         err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3788         if (err)
3789                 return err;
3790
3791         wdev = dev->ieee80211_ptr;
3792
3793         wdev_lock(wdev);
3794         spin_lock_bh(&rdev->bss_lock);
3795         cfg80211_bss_expire(rdev);
3796
3797         cb->seq = rdev->bss_generation;
3798
3799         list_for_each_entry(scan, &rdev->bss_list, list) {
3800                 if (++idx <= start)
3801                         continue;
3802                 if (nl80211_send_bss(skb, cb,
3803                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3804                                 rdev, wdev, scan) < 0) {
3805                         idx--;
3806                         break;
3807                 }
3808         }
3809
3810         spin_unlock_bh(&rdev->bss_lock);
3811         wdev_unlock(wdev);
3812
3813         cb->args[1] = idx;
3814         nl80211_finish_netdev_dump(rdev);
3815
3816         return skb->len;
3817 }
3818
3819 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3820                                 int flags, struct net_device *dev,
3821                                 struct survey_info *survey)
3822 {
3823         void *hdr;
3824         struct nlattr *infoattr;
3825
3826         hdr = nl80211hdr_put(msg, pid, seq, flags,
3827                              NL80211_CMD_NEW_SURVEY_RESULTS);
3828         if (!hdr)
3829                 return -ENOMEM;
3830
3831         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3832
3833         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3834         if (!infoattr)
3835                 goto nla_put_failure;
3836
3837         NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3838                     survey->channel->center_freq);
3839         if (survey->filled & SURVEY_INFO_NOISE_DBM)
3840                 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3841                             survey->noise);
3842         if (survey->filled & SURVEY_INFO_IN_USE)
3843                 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3844         if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3845                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3846                             survey->channel_time);
3847         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3848                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3849                             survey->channel_time_busy);
3850         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3851                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3852                             survey->channel_time_ext_busy);
3853         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3854                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3855                             survey->channel_time_rx);
3856         if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3857                 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3858                             survey->channel_time_tx);
3859
3860         nla_nest_end(msg, infoattr);
3861
3862         return genlmsg_end(msg, hdr);
3863
3864  nla_put_failure:
3865         genlmsg_cancel(msg, hdr);
3866         return -EMSGSIZE;
3867 }
3868
3869 static int nl80211_dump_survey(struct sk_buff *skb,
3870                         struct netlink_callback *cb)
3871 {
3872         struct survey_info survey;
3873         struct cfg80211_registered_device *dev;
3874         struct net_device *netdev;
3875         int survey_idx = cb->args[1];
3876         int res;
3877
3878         res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3879         if (res)
3880                 return res;
3881
3882         if (!dev->ops->dump_survey) {
3883                 res = -EOPNOTSUPP;
3884                 goto out_err;
3885         }
3886
3887         while (1) {
3888                 struct ieee80211_channel *chan;
3889
3890                 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3891                                             &survey);
3892                 if (res == -ENOENT)
3893                         break;
3894                 if (res)
3895                         goto out_err;
3896
3897                 /* Survey without a channel doesn't make sense */
3898                 if (!survey.channel) {
3899                         res = -EINVAL;
3900                         goto out;
3901                 }
3902
3903                 chan = ieee80211_get_channel(&dev->wiphy,
3904                                              survey.channel->center_freq);
3905                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
3906                         survey_idx++;
3907                         continue;
3908                 }
3909
3910                 if (nl80211_send_survey(skb,
3911                                 NETLINK_CB(cb->skb).pid,
3912                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3913                                 netdev,
3914                                 &survey) < 0)
3915                         goto out;
3916                 survey_idx++;
3917         }
3918
3919  out:
3920         cb->args[1] = survey_idx;
3921         res = skb->len;
3922  out_err:
3923         nl80211_finish_netdev_dump(dev);
3924         return res;
3925 }
3926
3927 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3928 {
3929         return auth_type <= NL80211_AUTHTYPE_MAX;
3930 }
3931
3932 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3933 {
3934         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3935                                   NL80211_WPA_VERSION_2));
3936 }
3937
3938 static bool nl80211_valid_akm_suite(u32 akm)
3939 {
3940         return akm == WLAN_AKM_SUITE_8021X ||
3941                 akm == WLAN_AKM_SUITE_PSK;
3942 }
3943
3944 static bool nl80211_valid_cipher_suite(u32 cipher)
3945 {
3946         return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3947                 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3948                 cipher == WLAN_CIPHER_SUITE_TKIP ||
3949                 cipher == WLAN_CIPHER_SUITE_CCMP ||
3950                 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3951 }
3952
3953
3954 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3955 {
3956         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3957         struct net_device *dev = info->user_ptr[1];
3958         struct ieee80211_channel *chan;
3959         const u8 *bssid, *ssid, *ie = NULL;
3960         int err, ssid_len, ie_len = 0;
3961         enum nl80211_auth_type auth_type;
3962         struct key_parse key;
3963         bool local_state_change;
3964
3965         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3966                 return -EINVAL;
3967
3968         if (!info->attrs[NL80211_ATTR_MAC])
3969                 return -EINVAL;
3970
3971         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3972                 return -EINVAL;
3973
3974         if (!info->attrs[NL80211_ATTR_SSID])
3975                 return -EINVAL;
3976
3977         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3978                 return -EINVAL;
3979
3980         err = nl80211_parse_key(info, &key);
3981         if (err)
3982                 return err;
3983
3984         if (key.idx >= 0) {
3985                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3986                         return -EINVAL;
3987                 if (!key.p.key || !key.p.key_len)
3988                         return -EINVAL;
3989                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3990                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3991                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3992                      key.p.key_len != WLAN_KEY_LEN_WEP104))
3993                         return -EINVAL;
3994                 if (key.idx > 4)
3995                         return -EINVAL;
3996         } else {
3997                 key.p.key_len = 0;
3998                 key.p.key = NULL;
3999         }
4000
4001         if (key.idx >= 0) {
4002                 int i;
4003                 bool ok = false;
4004                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4005                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4006                                 ok = true;
4007                                 break;
4008                         }
4009                 }
4010                 if (!ok)
4011                         return -EINVAL;
4012         }
4013
4014         if (!rdev->ops->auth)
4015                 return -EOPNOTSUPP;
4016
4017         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4018             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4019                 return -EOPNOTSUPP;
4020
4021         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4022         chan = ieee80211_get_channel(&rdev->wiphy,
4023                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4024         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4025                 return -EINVAL;
4026
4027         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4028         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4029
4030         if (info->attrs[NL80211_ATTR_IE]) {
4031                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4032                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4033         }
4034
4035         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4036         if (!nl80211_valid_auth_type(auth_type))
4037                 return -EINVAL;
4038
4039         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4040
4041         return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4042                                   ssid, ssid_len, ie, ie_len,
4043                                   key.p.key, key.p.key_len, key.idx,
4044                                   local_state_change);
4045 }
4046
4047 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4048                                    struct genl_info *info,
4049                                    struct cfg80211_crypto_settings *settings,
4050                                    int cipher_limit)
4051 {
4052         memset(settings, 0, sizeof(*settings));
4053
4054         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4055
4056         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4057                 u16 proto;
4058                 proto = nla_get_u16(
4059                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4060                 settings->control_port_ethertype = cpu_to_be16(proto);
4061                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4062                     proto != ETH_P_PAE)
4063                         return -EINVAL;
4064                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4065                         settings->control_port_no_encrypt = true;
4066         } else
4067                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4068
4069         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4070                 void *data;
4071                 int len, i;
4072
4073                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4074                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4075                 settings->n_ciphers_pairwise = len / sizeof(u32);
4076
4077                 if (len % sizeof(u32))
4078                         return -EINVAL;
4079
4080                 if (settings->n_ciphers_pairwise > cipher_limit)
4081                         return -EINVAL;
4082
4083                 memcpy(settings->ciphers_pairwise, data, len);
4084
4085                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4086                         if (!nl80211_valid_cipher_suite(
4087                                         settings->ciphers_pairwise[i]))
4088                                 return -EINVAL;
4089         }
4090
4091         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4092                 settings->cipher_group =
4093                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4094                 if (!nl80211_valid_cipher_suite(settings->cipher_group))
4095                         return -EINVAL;
4096         }
4097
4098         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4099                 settings->wpa_versions =
4100                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4101                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4102                         return -EINVAL;
4103         }
4104
4105         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4106                 void *data;
4107                 int len, i;
4108
4109                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4110                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4111                 settings->n_akm_suites = len / sizeof(u32);
4112
4113                 if (len % sizeof(u32))
4114                         return -EINVAL;
4115
4116                 memcpy(settings->akm_suites, data, len);
4117
4118                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4119                         if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
4120                                 return -EINVAL;
4121         }
4122
4123         return 0;
4124 }
4125
4126 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4127 {
4128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4129         struct net_device *dev = info->user_ptr[1];
4130         struct cfg80211_crypto_settings crypto;
4131         struct ieee80211_channel *chan;
4132         const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4133         int err, ssid_len, ie_len = 0;
4134         bool use_mfp = false;
4135
4136         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4137                 return -EINVAL;
4138
4139         if (!info->attrs[NL80211_ATTR_MAC] ||
4140             !info->attrs[NL80211_ATTR_SSID] ||
4141             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4142                 return -EINVAL;
4143
4144         if (!rdev->ops->assoc)
4145                 return -EOPNOTSUPP;
4146
4147         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4148             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4149                 return -EOPNOTSUPP;
4150
4151         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4152
4153         chan = ieee80211_get_channel(&rdev->wiphy,
4154                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4155         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4156                 return -EINVAL;
4157
4158         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4159         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4160
4161         if (info->attrs[NL80211_ATTR_IE]) {
4162                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4163                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4164         }
4165
4166         if (info->attrs[NL80211_ATTR_USE_MFP]) {
4167                 enum nl80211_mfp mfp =
4168                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4169                 if (mfp == NL80211_MFP_REQUIRED)
4170                         use_mfp = true;
4171                 else if (mfp != NL80211_MFP_NO)
4172                         return -EINVAL;
4173         }
4174
4175         if (info->attrs[NL80211_ATTR_PREV_BSSID])
4176                 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4177
4178         err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4179         if (!err)
4180                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4181                                           ssid, ssid_len, ie, ie_len, use_mfp,
4182                                           &crypto);
4183
4184         return err;
4185 }
4186
4187 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4188 {
4189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4190         struct net_device *dev = info->user_ptr[1];
4191         const u8 *ie = NULL, *bssid;
4192         int ie_len = 0;
4193         u16 reason_code;
4194         bool local_state_change;
4195
4196         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4197                 return -EINVAL;
4198
4199         if (!info->attrs[NL80211_ATTR_MAC])
4200                 return -EINVAL;
4201
4202         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4203                 return -EINVAL;
4204
4205         if (!rdev->ops->deauth)
4206                 return -EOPNOTSUPP;
4207
4208         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4209             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4210                 return -EOPNOTSUPP;
4211
4212         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4213
4214         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4215         if (reason_code == 0) {
4216                 /* Reason Code 0 is reserved */
4217                 return -EINVAL;
4218         }
4219
4220         if (info->attrs[NL80211_ATTR_IE]) {
4221                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4222                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4223         }
4224
4225         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4226
4227         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4228                                     local_state_change);
4229 }
4230
4231 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4232 {
4233         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4234         struct net_device *dev = info->user_ptr[1];
4235         const u8 *ie = NULL, *bssid;
4236         int ie_len = 0;
4237         u16 reason_code;
4238         bool local_state_change;
4239
4240         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4241                 return -EINVAL;
4242
4243         if (!info->attrs[NL80211_ATTR_MAC])
4244                 return -EINVAL;
4245
4246         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4247                 return -EINVAL;
4248
4249         if (!rdev->ops->disassoc)
4250                 return -EOPNOTSUPP;
4251
4252         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4253             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4254                 return -EOPNOTSUPP;
4255
4256         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4257
4258         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4259         if (reason_code == 0) {
4260                 /* Reason Code 0 is reserved */
4261                 return -EINVAL;
4262         }
4263
4264         if (info->attrs[NL80211_ATTR_IE]) {
4265                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4266                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4267         }
4268
4269         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4270
4271         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4272                                       local_state_change);
4273 }
4274
4275 static bool
4276 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4277                          int mcast_rate[IEEE80211_NUM_BANDS],
4278                          int rateval)
4279 {
4280         struct wiphy *wiphy = &rdev->wiphy;
4281         bool found = false;
4282         int band, i;
4283
4284         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4285                 struct ieee80211_supported_band *sband;
4286
4287                 sband = wiphy->bands[band];
4288                 if (!sband)
4289                         continue;
4290
4291                 for (i = 0; i < sband->n_bitrates; i++) {
4292                         if (sband->bitrates[i].bitrate == rateval) {
4293                                 mcast_rate[band] = i + 1;
4294                                 found = true;
4295                                 break;
4296                         }
4297                 }
4298         }
4299
4300         return found;
4301 }
4302
4303 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4304 {
4305         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4306         struct net_device *dev = info->user_ptr[1];
4307         struct cfg80211_ibss_params ibss;
4308         struct wiphy *wiphy;
4309         struct cfg80211_cached_keys *connkeys = NULL;
4310         int err;
4311
4312         memset(&ibss, 0, sizeof(ibss));
4313
4314         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4315                 return -EINVAL;
4316
4317         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4318             !info->attrs[NL80211_ATTR_SSID] ||
4319             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4320                 return -EINVAL;
4321
4322         ibss.beacon_interval = 100;
4323
4324         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4325                 ibss.beacon_interval =
4326                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4327                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4328                         return -EINVAL;
4329         }
4330
4331         if (!rdev->ops->join_ibss)
4332                 return -EOPNOTSUPP;
4333
4334         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4335                 return -EOPNOTSUPP;
4336
4337         wiphy = &rdev->wiphy;
4338
4339         if (info->attrs[NL80211_ATTR_MAC])
4340                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4341         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4342         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4343
4344         if (info->attrs[NL80211_ATTR_IE]) {
4345                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4346                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4347         }
4348
4349         ibss.channel = ieee80211_get_channel(wiphy,
4350                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4351         if (!ibss.channel ||
4352             ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4353             ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4354                 return -EINVAL;
4355
4356         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4357         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4358
4359         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4360                 u8 *rates =
4361                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4362                 int n_rates =
4363                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4364                 struct ieee80211_supported_band *sband =
4365                         wiphy->bands[ibss.channel->band];
4366                 int err;
4367
4368                 err = ieee80211_get_ratemask(sband, rates, n_rates,
4369                                              &ibss.basic_rates);
4370                 if (err)
4371                         return err;
4372         }
4373
4374         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4375             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4376                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4377                 return -EINVAL;
4378
4379         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4380                 connkeys = nl80211_parse_connkeys(rdev,
4381                                         info->attrs[NL80211_ATTR_KEYS]);
4382                 if (IS_ERR(connkeys))
4383                         return PTR_ERR(connkeys);
4384         }
4385
4386         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4387         if (err)
4388                 kfree(connkeys);
4389         return err;
4390 }
4391
4392 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4393 {
4394         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4395         struct net_device *dev = info->user_ptr[1];
4396
4397         if (!rdev->ops->leave_ibss)
4398                 return -EOPNOTSUPP;
4399
4400         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4401                 return -EOPNOTSUPP;
4402
4403         return cfg80211_leave_ibss(rdev, dev, false);
4404 }
4405
4406 #ifdef CONFIG_NL80211_TESTMODE
4407 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4408         .name = "testmode",
4409 };
4410
4411 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4412 {
4413         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4414         int err;
4415
4416         if (!info->attrs[NL80211_ATTR_TESTDATA])
4417                 return -EINVAL;
4418
4419         err = -EOPNOTSUPP;
4420         if (rdev->ops->testmode_cmd) {
4421                 rdev->testmode_info = info;
4422                 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4423                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4424                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4425                 rdev->testmode_info = NULL;
4426         }
4427
4428         return err;
4429 }
4430
4431 static int nl80211_testmode_dump(struct sk_buff *skb,
4432                                  struct netlink_callback *cb)
4433 {
4434         struct cfg80211_registered_device *dev;
4435         int err;
4436         long phy_idx;
4437         void *data = NULL;
4438         int data_len = 0;
4439
4440         if (cb->args[0]) {
4441                 /*
4442                  * 0 is a valid index, but not valid for args[0],
4443                  * so we need to offset by 1.
4444                  */
4445                 phy_idx = cb->args[0] - 1;
4446         } else {
4447                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4448                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
4449                                   nl80211_policy);
4450                 if (err)
4451                         return err;
4452                 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4453                         return -EINVAL;
4454                 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4455                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4456                         cb->args[1] =
4457                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4458         }
4459
4460         if (cb->args[1]) {
4461                 data = nla_data((void *)cb->args[1]);
4462                 data_len = nla_len((void *)cb->args[1]);
4463         }
4464
4465         mutex_lock(&cfg80211_mutex);
4466         dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4467         if (!dev) {
4468                 mutex_unlock(&cfg80211_mutex);
4469                 return -ENOENT;
4470         }
4471         cfg80211_lock_rdev(dev);
4472         mutex_unlock(&cfg80211_mutex);
4473
4474         if (!dev->ops->testmode_dump) {
4475                 err = -EOPNOTSUPP;
4476                 goto out_err;
4477         }
4478
4479         while (1) {
4480                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4481                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
4482                                            NL80211_CMD_TESTMODE);
4483                 struct nlattr *tmdata;
4484
4485                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4486                         genlmsg_cancel(skb, hdr);
4487                         break;
4488                 }
4489
4490                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4491                 if (!tmdata) {
4492                         genlmsg_cancel(skb, hdr);
4493                         break;
4494                 }
4495                 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4496                                               data, data_len);
4497                 nla_nest_end(skb, tmdata);
4498
4499                 if (err == -ENOBUFS || err == -ENOENT) {
4500                         genlmsg_cancel(skb, hdr);
4501                         break;
4502                 } else if (err) {
4503                         genlmsg_cancel(skb, hdr);
4504                         goto out_err;
4505                 }
4506
4507                 genlmsg_end(skb, hdr);
4508         }
4509
4510         err = skb->len;
4511         /* see above */
4512         cb->args[0] = phy_idx + 1;
4513  out_err:
4514         cfg80211_unlock_rdev(dev);
4515         return err;
4516 }
4517
4518 static struct sk_buff *
4519 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4520                               int approxlen, u32 pid, u32 seq, gfp_t gfp)
4521 {
4522         struct sk_buff *skb;
4523         void *hdr;
4524         struct nlattr *data;
4525
4526         skb = nlmsg_new(approxlen + 100, gfp);
4527         if (!skb)
4528                 return NULL;
4529
4530         hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4531         if (!hdr) {
4532                 kfree_skb(skb);
4533                 return NULL;
4534         }
4535
4536         NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4537         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4538
4539         ((void **)skb->cb)[0] = rdev;
4540         ((void **)skb->cb)[1] = hdr;
4541         ((void **)skb->cb)[2] = data;
4542
4543         return skb;
4544
4545  nla_put_failure:
4546         kfree_skb(skb);
4547         return NULL;
4548 }
4549
4550 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4551                                                   int approxlen)
4552 {
4553         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4554
4555         if (WARN_ON(!rdev->testmode_info))
4556                 return NULL;
4557
4558         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4559                                 rdev->testmode_info->snd_pid,
4560                                 rdev->testmode_info->snd_seq,
4561                                 GFP_KERNEL);
4562 }
4563 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4564
4565 int cfg80211_testmode_reply(struct sk_buff *skb)
4566 {
4567         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4568         void *hdr = ((void **)skb->cb)[1];
4569         struct nlattr *data = ((void **)skb->cb)[2];
4570
4571         if (WARN_ON(!rdev->testmode_info)) {
4572                 kfree_skb(skb);
4573                 return -EINVAL;
4574         }
4575
4576         nla_nest_end(skb, data);
4577         genlmsg_end(skb, hdr);
4578         return genlmsg_reply(skb, rdev->testmode_info);
4579 }
4580 EXPORT_SYMBOL(cfg80211_testmode_reply);
4581
4582 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4583                                                   int approxlen, gfp_t gfp)
4584 {
4585         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4586
4587         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4588 }
4589 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4590
4591 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4592 {
4593         void *hdr = ((void **)skb->cb)[1];
4594         struct nlattr *data = ((void **)skb->cb)[2];
4595
4596         nla_nest_end(skb, data);
4597         genlmsg_end(skb, hdr);
4598         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4599 }
4600 EXPORT_SYMBOL(cfg80211_testmode_event);
4601 #endif
4602
4603 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4604 {
4605         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4606         struct net_device *dev = info->user_ptr[1];
4607         struct cfg80211_connect_params connect;
4608         struct wiphy *wiphy;
4609         struct cfg80211_cached_keys *connkeys = NULL;
4610         int err;
4611
4612         memset(&connect, 0, sizeof(connect));
4613
4614         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4615                 return -EINVAL;
4616
4617         if (!info->attrs[NL80211_ATTR_SSID] ||
4618             !nla_len(info->attrs[NL80211_ATTR_SSID]))
4619                 return -EINVAL;
4620
4621         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4622                 connect.auth_type =
4623                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4624                 if (!nl80211_valid_auth_type(connect.auth_type))
4625                         return -EINVAL;
4626         } else
4627                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4628
4629         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4630
4631         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4632                                       NL80211_MAX_NR_CIPHER_SUITES);
4633         if (err)
4634                 return err;
4635
4636         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4637             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4638                 return -EOPNOTSUPP;
4639
4640         wiphy = &rdev->wiphy;
4641
4642         if (info->attrs[NL80211_ATTR_MAC])
4643                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4644         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4645         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4646
4647         if (info->attrs[NL80211_ATTR_IE]) {
4648                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4649                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4650         }
4651
4652         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4653                 connect.channel =
4654                         ieee80211_get_channel(wiphy,
4655                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4656                 if (!connect.channel ||
4657                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
4658                         return -EINVAL;
4659         }
4660
4661         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4662                 connkeys = nl80211_parse_connkeys(rdev,
4663                                         info->attrs[NL80211_ATTR_KEYS]);
4664                 if (IS_ERR(connkeys))
4665                         return PTR_ERR(connkeys);
4666         }
4667
4668         err = cfg80211_connect(rdev, dev, &connect, connkeys);
4669         if (err)
4670                 kfree(connkeys);
4671         return err;
4672 }
4673
4674 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4675 {
4676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4677         struct net_device *dev = info->user_ptr[1];
4678         u16 reason;
4679
4680         if (!info->attrs[NL80211_ATTR_REASON_CODE])
4681                 reason = WLAN_REASON_DEAUTH_LEAVING;
4682         else
4683                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4684
4685         if (reason == 0)
4686                 return -EINVAL;
4687
4688         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4689             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4690                 return -EOPNOTSUPP;
4691
4692         return cfg80211_disconnect(rdev, dev, reason, true);
4693 }
4694
4695 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4696 {
4697         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4698         struct net *net;
4699         int err;
4700         u32 pid;
4701
4702         if (!info->attrs[NL80211_ATTR_PID])
4703                 return -EINVAL;
4704
4705         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4706
4707         net = get_net_ns_by_pid(pid);
4708         if (IS_ERR(net))
4709                 return PTR_ERR(net);
4710
4711         err = 0;
4712
4713         /* check if anything to do */
4714         if (!net_eq(wiphy_net(&rdev->wiphy), net))
4715                 err = cfg80211_switch_netns(rdev, net);
4716
4717         put_net(net);
4718         return err;
4719 }
4720
4721 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4722 {
4723         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4724         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4725                         struct cfg80211_pmksa *pmksa) = NULL;
4726         struct net_device *dev = info->user_ptr[1];
4727         struct cfg80211_pmksa pmksa;
4728
4729         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4730
4731         if (!info->attrs[NL80211_ATTR_MAC])
4732                 return -EINVAL;
4733
4734         if (!info->attrs[NL80211_ATTR_PMKID])
4735                 return -EINVAL;
4736
4737         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4738         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4739
4740         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4741             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4742                 return -EOPNOTSUPP;
4743
4744         switch (info->genlhdr->cmd) {
4745         case NL80211_CMD_SET_PMKSA:
4746                 rdev_ops = rdev->ops->set_pmksa;
4747                 break;
4748         case NL80211_CMD_DEL_PMKSA:
4749                 rdev_ops = rdev->ops->del_pmksa;
4750                 break;
4751         default:
4752                 WARN_ON(1);
4753                 break;
4754         }
4755
4756         if (!rdev_ops)
4757                 return -EOPNOTSUPP;
4758
4759         return rdev_ops(&rdev->wiphy, dev, &pmksa);
4760 }
4761
4762 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4763 {
4764         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4765         struct net_device *dev = info->user_ptr[1];
4766
4767         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4768             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4769                 return -EOPNOTSUPP;
4770
4771         if (!rdev->ops->flush_pmksa)
4772                 return -EOPNOTSUPP;
4773
4774         return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4775 }
4776
4777 static int nl80211_remain_on_channel(struct sk_buff *skb,
4778                                      struct genl_info *info)
4779 {
4780         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4781         struct net_device *dev = info->user_ptr[1];
4782         struct ieee80211_channel *chan;
4783         struct sk_buff *msg;
4784         void *hdr;
4785         u64 cookie;
4786         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4787         u32 freq, duration;
4788         int err;
4789
4790         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4791             !info->attrs[NL80211_ATTR_DURATION])
4792                 return -EINVAL;
4793
4794         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4795
4796         /*
4797          * We should be on that channel for at least one jiffie,
4798          * and more than 5 seconds seems excessive.
4799          */
4800         if (!duration || !msecs_to_jiffies(duration) ||
4801             duration > rdev->wiphy.max_remain_on_channel_duration)
4802                 return -EINVAL;
4803
4804         if (!rdev->ops->remain_on_channel)
4805                 return -EOPNOTSUPP;
4806
4807         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4808                 channel_type = nla_get_u32(
4809                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4810                 if (channel_type != NL80211_CHAN_NO_HT &&
4811                     channel_type != NL80211_CHAN_HT20 &&
4812                     channel_type != NL80211_CHAN_HT40PLUS &&
4813                     channel_type != NL80211_CHAN_HT40MINUS)
4814                         return -EINVAL;
4815         }
4816
4817         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4818         chan = rdev_freq_to_chan(rdev, freq, channel_type);
4819         if (chan == NULL)
4820                 return -EINVAL;
4821
4822         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4823         if (!msg)
4824                 return -ENOMEM;
4825
4826         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4827                              NL80211_CMD_REMAIN_ON_CHANNEL);
4828
4829         if (IS_ERR(hdr)) {
4830                 err = PTR_ERR(hdr);
4831                 goto free_msg;
4832         }
4833
4834         err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4835                                            channel_type, duration, &cookie);
4836
4837         if (err)
4838                 goto free_msg;
4839
4840         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4841
4842         genlmsg_end(msg, hdr);
4843
4844         return genlmsg_reply(msg, info);
4845
4846  nla_put_failure:
4847         err = -ENOBUFS;
4848  free_msg:
4849         nlmsg_free(msg);
4850         return err;
4851 }
4852
4853 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4854                                             struct genl_info *info)
4855 {
4856         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4857         struct net_device *dev = info->user_ptr[1];
4858         u64 cookie;
4859
4860         if (!info->attrs[NL80211_ATTR_COOKIE])
4861                 return -EINVAL;
4862
4863         if (!rdev->ops->cancel_remain_on_channel)
4864                 return -EOPNOTSUPP;
4865
4866         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4867
4868         return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4869 }
4870
4871 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4872                            u8 *rates, u8 rates_len)
4873 {
4874         u8 i;
4875         u32 mask = 0;
4876
4877         for (i = 0; i < rates_len; i++) {
4878                 int rate = (rates[i] & 0x7f) * 5;
4879                 int ridx;
4880                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4881                         struct ieee80211_rate *srate =
4882                                 &sband->bitrates[ridx];
4883                         if (rate == srate->bitrate) {
4884                                 mask |= 1 << ridx;
4885                                 break;
4886                         }
4887                 }
4888                 if (ridx == sband->n_bitrates)
4889                         return 0; /* rate not found */
4890         }
4891
4892         return mask;
4893 }
4894
4895 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4896         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4897                                     .len = NL80211_MAX_SUPP_RATES },
4898 };
4899
4900 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4901                                        struct genl_info *info)
4902 {
4903         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4904         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4905         struct cfg80211_bitrate_mask mask;
4906         int rem, i;
4907         struct net_device *dev = info->user_ptr[1];
4908         struct nlattr *tx_rates;
4909         struct ieee80211_supported_band *sband;
4910
4911         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4912                 return -EINVAL;
4913
4914         if (!rdev->ops->set_bitrate_mask)
4915                 return -EOPNOTSUPP;
4916
4917         memset(&mask, 0, sizeof(mask));
4918         /* Default to all rates enabled */
4919         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4920                 sband = rdev->wiphy.bands[i];
4921                 mask.control[i].legacy =
4922                         sband ? (1 << sband->n_bitrates) - 1 : 0;
4923         }
4924
4925         /*
4926          * The nested attribute uses enum nl80211_band as the index. This maps
4927          * directly to the enum ieee80211_band values used in cfg80211.
4928          */
4929         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4930         {
4931                 enum ieee80211_band band = nla_type(tx_rates);
4932                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4933                         return -EINVAL;
4934                 sband = rdev->wiphy.bands[band];
4935                 if (sband == NULL)
4936                         return -EINVAL;
4937                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4938                           nla_len(tx_rates), nl80211_txattr_policy);
4939                 if (tb[NL80211_TXRATE_LEGACY]) {
4940                         mask.control[band].legacy = rateset_to_mask(
4941                                 sband,
4942                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4943                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4944                         if (mask.control[band].legacy == 0)
4945                                 return -EINVAL;
4946                 }
4947         }
4948
4949         return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4950 }
4951
4952 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4953 {
4954         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4955         struct net_device *dev = info->user_ptr[1];
4956         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4957
4958         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4959                 return -EINVAL;
4960
4961         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4962                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4963
4964         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4965             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4966             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4967             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4968             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4969             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4970             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4971                 return -EOPNOTSUPP;
4972
4973         /* not much point in registering if we can't reply */
4974         if (!rdev->ops->mgmt_tx)
4975                 return -EOPNOTSUPP;
4976
4977         return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4978                         frame_type,
4979                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4980                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4981 }
4982
4983 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4984 {
4985         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4986         struct net_device *dev = info->user_ptr[1];
4987         struct ieee80211_channel *chan;
4988         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4989         bool channel_type_valid = false;
4990         u32 freq;
4991         int err;
4992         void *hdr;
4993         u64 cookie;
4994         struct sk_buff *msg;
4995         unsigned int wait = 0;
4996         bool offchan;
4997
4998         if (!info->attrs[NL80211_ATTR_FRAME] ||
4999             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5000                 return -EINVAL;
5001
5002         if (!rdev->ops->mgmt_tx)
5003                 return -EOPNOTSUPP;
5004
5005         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5006             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5007             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5008             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5009             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5010             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5011             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5012                 return -EOPNOTSUPP;
5013
5014         if (info->attrs[NL80211_ATTR_DURATION]) {
5015                 if (!rdev->ops->mgmt_tx_cancel_wait)
5016                         return -EINVAL;
5017                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5018         }
5019
5020         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5021                 channel_type = nla_get_u32(
5022                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5023                 if (channel_type != NL80211_CHAN_NO_HT &&
5024                     channel_type != NL80211_CHAN_HT20 &&
5025                     channel_type != NL80211_CHAN_HT40PLUS &&
5026                     channel_type != NL80211_CHAN_HT40MINUS)
5027                         return -EINVAL;
5028                 channel_type_valid = true;
5029         }
5030
5031         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5032
5033         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5034         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5035         if (chan == NULL)
5036                 return -EINVAL;
5037
5038         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5039         if (!msg)
5040                 return -ENOMEM;
5041
5042         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5043                              NL80211_CMD_FRAME);
5044
5045         if (IS_ERR(hdr)) {
5046                 err = PTR_ERR(hdr);
5047                 goto free_msg;
5048         }
5049         err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5050                                     channel_type_valid, wait,
5051                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
5052                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
5053                                     &cookie);
5054         if (err)
5055                 goto free_msg;
5056
5057         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5058
5059         genlmsg_end(msg, hdr);
5060         return genlmsg_reply(msg, info);
5061
5062  nla_put_failure:
5063         err = -ENOBUFS;
5064  free_msg:
5065         nlmsg_free(msg);
5066         return err;
5067 }
5068
5069 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5070 {
5071         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5072         struct net_device *dev = info->user_ptr[1];
5073         u64 cookie;
5074
5075         if (!info->attrs[NL80211_ATTR_COOKIE])
5076                 return -EINVAL;
5077
5078         if (!rdev->ops->mgmt_tx_cancel_wait)
5079                 return -EOPNOTSUPP;
5080
5081         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5082             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5083             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5084             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5085             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5086             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5087                 return -EOPNOTSUPP;
5088
5089         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5090
5091         return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5092 }
5093
5094 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5095 {
5096         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5097         struct wireless_dev *wdev;
5098         struct net_device *dev = info->user_ptr[1];
5099         u8 ps_state;
5100         bool state;
5101         int err;
5102
5103         if (!info->attrs[NL80211_ATTR_PS_STATE])
5104                 return -EINVAL;
5105
5106         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5107
5108         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5109                 return -EINVAL;
5110
5111         wdev = dev->ieee80211_ptr;
5112
5113         if (!rdev->ops->set_power_mgmt)
5114                 return -EOPNOTSUPP;
5115
5116         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5117
5118         if (state == wdev->ps)
5119                 return 0;
5120
5121         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5122                                         wdev->ps_timeout);
5123         if (!err)
5124                 wdev->ps = state;
5125         return err;
5126 }
5127
5128 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5129 {
5130         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5131         enum nl80211_ps_state ps_state;
5132         struct wireless_dev *wdev;
5133         struct net_device *dev = info->user_ptr[1];
5134         struct sk_buff *msg;
5135         void *hdr;
5136         int err;
5137
5138         wdev = dev->ieee80211_ptr;
5139
5140         if (!rdev->ops->set_power_mgmt)
5141                 return -EOPNOTSUPP;
5142
5143         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5144         if (!msg)
5145                 return -ENOMEM;
5146
5147         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5148                              NL80211_CMD_GET_POWER_SAVE);
5149         if (!hdr) {
5150                 err = -ENOBUFS;
5151                 goto free_msg;
5152         }
5153
5154         if (wdev->ps)
5155                 ps_state = NL80211_PS_ENABLED;
5156         else
5157                 ps_state = NL80211_PS_DISABLED;
5158
5159         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5160
5161         genlmsg_end(msg, hdr);
5162         return genlmsg_reply(msg, info);
5163
5164  nla_put_failure:
5165         err = -ENOBUFS;
5166  free_msg:
5167         nlmsg_free(msg);
5168         return err;
5169 }
5170
5171 static struct nla_policy
5172 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5173         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5174         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5175         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5176 };
5177
5178 static int nl80211_set_cqm_rssi(struct genl_info *info,
5179                                 s32 threshold, u32 hysteresis)
5180 {
5181         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5182         struct wireless_dev *wdev;
5183         struct net_device *dev = info->user_ptr[1];
5184
5185         if (threshold > 0)
5186                 return -EINVAL;
5187
5188         wdev = dev->ieee80211_ptr;
5189
5190         if (!rdev->ops->set_cqm_rssi_config)
5191                 return -EOPNOTSUPP;
5192
5193         if (wdev->iftype != NL80211_IFTYPE_STATION &&
5194             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5195                 return -EOPNOTSUPP;
5196
5197         return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5198                                               threshold, hysteresis);
5199 }
5200
5201 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5202 {
5203         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5204         struct nlattr *cqm;
5205         int err;
5206
5207         cqm = info->attrs[NL80211_ATTR_CQM];
5208         if (!cqm) {
5209                 err = -EINVAL;
5210                 goto out;
5211         }
5212
5213         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5214                                nl80211_attr_cqm_policy);
5215         if (err)
5216                 goto out;
5217
5218         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5219             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5220                 s32 threshold;
5221                 u32 hysteresis;
5222                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5223                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5224                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5225         } else
5226                 err = -EINVAL;
5227
5228 out:
5229         return err;
5230 }
5231
5232 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5233 {
5234         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5235         struct net_device *dev = info->user_ptr[1];
5236         struct mesh_config cfg;
5237         struct mesh_setup setup;
5238         int err;
5239
5240         /* start with default */
5241         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5242         memcpy(&setup, &default_mesh_setup, sizeof(setup));
5243
5244         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5245                 /* and parse parameters if given */
5246                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5247                 if (err)
5248                         return err;
5249         }
5250
5251         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5252             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5253                 return -EINVAL;
5254
5255         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5256         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5257
5258         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5259                 /* parse additional setup parameters if given */
5260                 err = nl80211_parse_mesh_setup(info, &setup);
5261                 if (err)
5262                         return err;
5263         }
5264
5265         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5266 }
5267
5268 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5269 {
5270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5271         struct net_device *dev = info->user_ptr[1];
5272
5273         return cfg80211_leave_mesh(rdev, dev);
5274 }
5275
5276 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5277 {
5278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5279         struct sk_buff *msg;
5280         void *hdr;
5281
5282         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5283                 return -EOPNOTSUPP;
5284
5285         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5286         if (!msg)
5287                 return -ENOMEM;
5288
5289         hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5290                              NL80211_CMD_GET_WOWLAN);
5291         if (!hdr)
5292                 goto nla_put_failure;
5293
5294         if (rdev->wowlan) {
5295                 struct nlattr *nl_wowlan;
5296
5297                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5298                 if (!nl_wowlan)
5299                         goto nla_put_failure;
5300
5301                 if (rdev->wowlan->any)
5302                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5303                 if (rdev->wowlan->disconnect)
5304                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5305                 if (rdev->wowlan->magic_pkt)
5306                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5307                 if (rdev->wowlan->gtk_rekey_failure)
5308                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5309                 if (rdev->wowlan->eap_identity_req)
5310                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5311                 if (rdev->wowlan->four_way_handshake)
5312                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5313                 if (rdev->wowlan->rfkill_release)
5314                         NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5315                 if (rdev->wowlan->n_patterns) {
5316                         struct nlattr *nl_pats, *nl_pat;
5317                         int i, pat_len;
5318
5319                         nl_pats = nla_nest_start(msg,
5320                                         NL80211_WOWLAN_TRIG_PKT_PATTERN);
5321                         if (!nl_pats)
5322                                 goto nla_put_failure;
5323
5324                         for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5325                                 nl_pat = nla_nest_start(msg, i + 1);
5326                                 if (!nl_pat)
5327                                         goto nla_put_failure;
5328                                 pat_len = rdev->wowlan->patterns[i].pattern_len;
5329                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5330                                         DIV_ROUND_UP(pat_len, 8),
5331                                         rdev->wowlan->patterns[i].mask);
5332                                 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5333                                         pat_len,
5334                                         rdev->wowlan->patterns[i].pattern);
5335                                 nla_nest_end(msg, nl_pat);
5336                         }
5337                         nla_nest_end(msg, nl_pats);
5338                 }
5339
5340                 nla_nest_end(msg, nl_wowlan);
5341         }
5342
5343         genlmsg_end(msg, hdr);
5344         return genlmsg_reply(msg, info);
5345
5346 nla_put_failure:
5347         nlmsg_free(msg);
5348         return -ENOBUFS;
5349 }
5350
5351 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5352 {
5353         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5354         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5355         struct cfg80211_wowlan no_triggers = {};
5356         struct cfg80211_wowlan new_triggers = {};
5357         struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5358         int err, i;
5359
5360         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5361                 return -EOPNOTSUPP;
5362
5363         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5364                 goto no_triggers;
5365
5366         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5367                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5368                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5369                         nl80211_wowlan_policy);
5370         if (err)
5371                 return err;
5372
5373         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5374                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5375                         return -EINVAL;
5376                 new_triggers.any = true;
5377         }
5378
5379         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5380                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5381                         return -EINVAL;
5382                 new_triggers.disconnect = true;
5383         }
5384
5385         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5386                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5387                         return -EINVAL;
5388                 new_triggers.magic_pkt = true;
5389         }
5390
5391         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5392                 return -EINVAL;
5393
5394         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5395                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5396                         return -EINVAL;
5397                 new_triggers.gtk_rekey_failure = true;
5398         }
5399
5400         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5401                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5402                         return -EINVAL;
5403                 new_triggers.eap_identity_req = true;
5404         }
5405
5406         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5407                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5408                         return -EINVAL;
5409                 new_triggers.four_way_handshake = true;
5410         }
5411
5412         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5413                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5414                         return -EINVAL;
5415                 new_triggers.rfkill_release = true;
5416         }
5417
5418         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5419                 struct nlattr *pat;
5420                 int n_patterns = 0;
5421                 int rem, pat_len, mask_len;
5422                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5423
5424                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5425                                     rem)
5426                         n_patterns++;
5427                 if (n_patterns > wowlan->n_patterns)
5428                         return -EINVAL;
5429
5430                 new_triggers.patterns = kcalloc(n_patterns,
5431                                                 sizeof(new_triggers.patterns[0]),
5432                                                 GFP_KERNEL);
5433                 if (!new_triggers.patterns)
5434                         return -ENOMEM;
5435
5436                 new_triggers.n_patterns = n_patterns;
5437                 i = 0;
5438
5439                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5440                                     rem) {
5441                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5442                                   nla_data(pat), nla_len(pat), NULL);
5443                         err = -EINVAL;
5444                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5445                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5446                                 goto error;
5447                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5448                         mask_len = DIV_ROUND_UP(pat_len, 8);
5449                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5450                             mask_len)
5451                                 goto error;
5452                         if (pat_len > wowlan->pattern_max_len ||
5453                             pat_len < wowlan->pattern_min_len)
5454                                 goto error;
5455
5456                         new_triggers.patterns[i].mask =
5457                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
5458                         if (!new_triggers.patterns[i].mask) {
5459                                 err = -ENOMEM;
5460                                 goto error;
5461                         }
5462                         new_triggers.patterns[i].pattern =
5463                                 new_triggers.patterns[i].mask + mask_len;
5464                         memcpy(new_triggers.patterns[i].mask,
5465                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5466                                mask_len);
5467                         new_triggers.patterns[i].pattern_len = pat_len;
5468                         memcpy(new_triggers.patterns[i].pattern,
5469                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5470                                pat_len);
5471                         i++;
5472                 }
5473         }
5474
5475         if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5476                 struct cfg80211_wowlan *ntrig;
5477                 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5478                                 GFP_KERNEL);
5479                 if (!ntrig) {
5480                         err = -ENOMEM;
5481                         goto error;
5482                 }
5483                 cfg80211_rdev_free_wowlan(rdev);
5484                 rdev->wowlan = ntrig;
5485         } else {
5486  no_triggers:
5487                 cfg80211_rdev_free_wowlan(rdev);
5488                 rdev->wowlan = NULL;
5489         }
5490
5491         return 0;
5492  error:
5493         for (i = 0; i < new_triggers.n_patterns; i++)
5494                 kfree(new_triggers.patterns[i].mask);
5495         kfree(new_triggers.patterns);
5496         return err;
5497 }
5498
5499 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5500 {
5501         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5502         struct net_device *dev = info->user_ptr[1];
5503         struct wireless_dev *wdev = dev->ieee80211_ptr;
5504         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5505         struct cfg80211_gtk_rekey_data rekey_data;
5506         int err;
5507
5508         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5509                 return -EINVAL;
5510
5511         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5512                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5513                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5514                         nl80211_rekey_policy);
5515         if (err)
5516                 return err;
5517
5518         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5519                 return -ERANGE;
5520         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5521                 return -ERANGE;
5522         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5523                 return -ERANGE;
5524
5525         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5526                NL80211_KEK_LEN);
5527         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5528                NL80211_KCK_LEN);
5529         memcpy(rekey_data.replay_ctr,
5530                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5531                NL80211_REPLAY_CTR_LEN);
5532
5533         wdev_lock(wdev);
5534         if (!wdev->current_bss) {
5535                 err = -ENOTCONN;
5536                 goto out;
5537         }
5538
5539         if (!rdev->ops->set_rekey_data) {
5540                 err = -EOPNOTSUPP;
5541                 goto out;
5542         }
5543
5544         err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5545  out:
5546         wdev_unlock(wdev);
5547         return err;
5548 }
5549
5550 #define NL80211_FLAG_NEED_WIPHY         0x01
5551 #define NL80211_FLAG_NEED_NETDEV        0x02
5552 #define NL80211_FLAG_NEED_RTNL          0x04
5553 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
5554 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
5555                                          NL80211_FLAG_CHECK_NETDEV_UP)
5556
5557 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5558                             struct genl_info *info)
5559 {
5560         struct cfg80211_registered_device *rdev;
5561         struct net_device *dev;
5562         int err;
5563         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5564
5565         if (rtnl)
5566                 rtnl_lock();
5567
5568         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5569                 rdev = cfg80211_get_dev_from_info(info);
5570                 if (IS_ERR(rdev)) {
5571                         if (rtnl)
5572                                 rtnl_unlock();
5573                         return PTR_ERR(rdev);
5574                 }
5575                 info->user_ptr[0] = rdev;
5576         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5577                 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5578                 if (err) {
5579                         if (rtnl)
5580                                 rtnl_unlock();
5581                         return err;
5582                 }
5583                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5584                     !netif_running(dev)) {
5585                         cfg80211_unlock_rdev(rdev);
5586                         dev_put(dev);
5587                         if (rtnl)
5588                                 rtnl_unlock();
5589                         return -ENETDOWN;
5590                 }
5591                 info->user_ptr[0] = rdev;
5592                 info->user_ptr[1] = dev;
5593         }
5594
5595         return 0;
5596 }
5597
5598 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5599                               struct genl_info *info)
5600 {
5601         if (info->user_ptr[0])
5602                 cfg80211_unlock_rdev(info->user_ptr[0]);
5603         if (info->user_ptr[1])
5604                 dev_put(info->user_ptr[1]);
5605         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5606                 rtnl_unlock();
5607 }
5608
5609 static struct genl_ops nl80211_ops[] = {
5610         {
5611                 .cmd = NL80211_CMD_GET_WIPHY,
5612                 .doit = nl80211_get_wiphy,
5613                 .dumpit = nl80211_dump_wiphy,
5614                 .policy = nl80211_policy,
5615                 /* can be retrieved by unprivileged users */
5616                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5617         },
5618         {
5619                 .cmd = NL80211_CMD_SET_WIPHY,
5620                 .doit = nl80211_set_wiphy,
5621                 .policy = nl80211_policy,
5622                 .flags = GENL_ADMIN_PERM,
5623                 .internal_flags = NL80211_FLAG_NEED_RTNL,
5624         },
5625         {
5626                 .cmd = NL80211_CMD_GET_INTERFACE,
5627                 .doit = nl80211_get_interface,
5628                 .dumpit = nl80211_dump_interface,
5629                 .policy = nl80211_policy,
5630                 /* can be retrieved by unprivileged users */
5631                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5632         },
5633         {
5634                 .cmd = NL80211_CMD_SET_INTERFACE,
5635                 .doit = nl80211_set_interface,
5636                 .policy = nl80211_policy,
5637                 .flags = GENL_ADMIN_PERM,
5638                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5639                                   NL80211_FLAG_NEED_RTNL,
5640         },
5641         {
5642                 .cmd = NL80211_CMD_NEW_INTERFACE,
5643                 .doit = nl80211_new_interface,
5644                 .policy = nl80211_policy,
5645                 .flags = GENL_ADMIN_PERM,
5646                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5647                                   NL80211_FLAG_NEED_RTNL,
5648         },
5649         {
5650                 .cmd = NL80211_CMD_DEL_INTERFACE,
5651                 .doit = nl80211_del_interface,
5652                 .policy = nl80211_policy,
5653                 .flags = GENL_ADMIN_PERM,
5654                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5655                                   NL80211_FLAG_NEED_RTNL,
5656         },
5657         {
5658                 .cmd = NL80211_CMD_GET_KEY,
5659                 .doit = nl80211_get_key,
5660                 .policy = nl80211_policy,
5661                 .flags = GENL_ADMIN_PERM,
5662                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5663                                   NL80211_FLAG_NEED_RTNL,
5664         },
5665         {
5666                 .cmd = NL80211_CMD_SET_KEY,
5667                 .doit = nl80211_set_key,
5668                 .policy = nl80211_policy,
5669                 .flags = GENL_ADMIN_PERM,
5670                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5671                                   NL80211_FLAG_NEED_RTNL,
5672         },
5673         {
5674                 .cmd = NL80211_CMD_NEW_KEY,
5675                 .doit = nl80211_new_key,
5676                 .policy = nl80211_policy,
5677                 .flags = GENL_ADMIN_PERM,
5678                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5679                                   NL80211_FLAG_NEED_RTNL,
5680         },
5681         {
5682                 .cmd = NL80211_CMD_DEL_KEY,
5683                 .doit = nl80211_del_key,
5684                 .policy = nl80211_policy,
5685                 .flags = GENL_ADMIN_PERM,
5686                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5687                                   NL80211_FLAG_NEED_RTNL,
5688         },
5689         {
5690                 .cmd = NL80211_CMD_SET_BEACON,
5691                 .policy = nl80211_policy,
5692                 .flags = GENL_ADMIN_PERM,
5693                 .doit = nl80211_addset_beacon,
5694                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5695                                   NL80211_FLAG_NEED_RTNL,
5696         },
5697         {
5698                 .cmd = NL80211_CMD_NEW_BEACON,
5699                 .policy = nl80211_policy,
5700                 .flags = GENL_ADMIN_PERM,
5701                 .doit = nl80211_addset_beacon,
5702                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5703                                   NL80211_FLAG_NEED_RTNL,
5704         },
5705         {
5706                 .cmd = NL80211_CMD_DEL_BEACON,
5707                 .policy = nl80211_policy,
5708                 .flags = GENL_ADMIN_PERM,
5709                 .doit = nl80211_del_beacon,
5710                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5711                                   NL80211_FLAG_NEED_RTNL,
5712         },
5713         {
5714                 .cmd = NL80211_CMD_GET_STATION,
5715                 .doit = nl80211_get_station,
5716                 .dumpit = nl80211_dump_station,
5717                 .policy = nl80211_policy,
5718                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5719                                   NL80211_FLAG_NEED_RTNL,
5720         },
5721         {
5722                 .cmd = NL80211_CMD_SET_STATION,
5723                 .doit = nl80211_set_station,
5724                 .policy = nl80211_policy,
5725                 .flags = GENL_ADMIN_PERM,
5726                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5727                                   NL80211_FLAG_NEED_RTNL,
5728         },
5729         {
5730                 .cmd = NL80211_CMD_NEW_STATION,
5731                 .doit = nl80211_new_station,
5732                 .policy = nl80211_policy,
5733                 .flags = GENL_ADMIN_PERM,
5734                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5735                                   NL80211_FLAG_NEED_RTNL,
5736         },
5737         {
5738                 .cmd = NL80211_CMD_DEL_STATION,
5739                 .doit = nl80211_del_station,
5740                 .policy = nl80211_policy,
5741                 .flags = GENL_ADMIN_PERM,
5742                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5743                                   NL80211_FLAG_NEED_RTNL,
5744         },
5745         {
5746                 .cmd = NL80211_CMD_GET_MPATH,
5747                 .doit = nl80211_get_mpath,
5748                 .dumpit = nl80211_dump_mpath,
5749                 .policy = nl80211_policy,
5750                 .flags = GENL_ADMIN_PERM,
5751                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5752                                   NL80211_FLAG_NEED_RTNL,
5753         },
5754         {
5755                 .cmd = NL80211_CMD_SET_MPATH,
5756                 .doit = nl80211_set_mpath,
5757                 .policy = nl80211_policy,
5758                 .flags = GENL_ADMIN_PERM,
5759                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5760                                   NL80211_FLAG_NEED_RTNL,
5761         },
5762         {
5763                 .cmd = NL80211_CMD_NEW_MPATH,
5764                 .doit = nl80211_new_mpath,
5765                 .policy = nl80211_policy,
5766                 .flags = GENL_ADMIN_PERM,
5767                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5768                                   NL80211_FLAG_NEED_RTNL,
5769         },
5770         {
5771                 .cmd = NL80211_CMD_DEL_MPATH,
5772                 .doit = nl80211_del_mpath,
5773                 .policy = nl80211_policy,
5774                 .flags = GENL_ADMIN_PERM,
5775                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5776                                   NL80211_FLAG_NEED_RTNL,
5777         },
5778         {
5779                 .cmd = NL80211_CMD_SET_BSS,
5780                 .doit = nl80211_set_bss,
5781                 .policy = nl80211_policy,
5782                 .flags = GENL_ADMIN_PERM,
5783                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5784                                   NL80211_FLAG_NEED_RTNL,
5785         },
5786         {
5787                 .cmd = NL80211_CMD_GET_REG,
5788                 .doit = nl80211_get_reg,
5789                 .policy = nl80211_policy,
5790                 /* can be retrieved by unprivileged users */
5791         },
5792         {
5793                 .cmd = NL80211_CMD_SET_REG,
5794                 .doit = nl80211_set_reg,
5795                 .policy = nl80211_policy,
5796                 .flags = GENL_ADMIN_PERM,
5797         },
5798         {
5799                 .cmd = NL80211_CMD_REQ_SET_REG,
5800                 .doit = nl80211_req_set_reg,
5801                 .policy = nl80211_policy,
5802                 .flags = GENL_ADMIN_PERM,
5803         },
5804         {
5805                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5806                 .doit = nl80211_get_mesh_config,
5807                 .policy = nl80211_policy,
5808                 /* can be retrieved by unprivileged users */
5809                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5810                                   NL80211_FLAG_NEED_RTNL,
5811         },
5812         {
5813                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5814                 .doit = nl80211_update_mesh_config,
5815                 .policy = nl80211_policy,
5816                 .flags = GENL_ADMIN_PERM,
5817                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5818                                   NL80211_FLAG_NEED_RTNL,
5819         },
5820         {
5821                 .cmd = NL80211_CMD_TRIGGER_SCAN,
5822                 .doit = nl80211_trigger_scan,
5823                 .policy = nl80211_policy,
5824                 .flags = GENL_ADMIN_PERM,
5825                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5826                                   NL80211_FLAG_NEED_RTNL,
5827         },
5828         {
5829                 .cmd = NL80211_CMD_GET_SCAN,
5830                 .policy = nl80211_policy,
5831                 .dumpit = nl80211_dump_scan,
5832         },
5833         {
5834                 .cmd = NL80211_CMD_START_SCHED_SCAN,
5835                 .doit = nl80211_start_sched_scan,
5836                 .policy = nl80211_policy,
5837                 .flags = GENL_ADMIN_PERM,
5838                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5839                                   NL80211_FLAG_NEED_RTNL,
5840         },
5841         {
5842                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
5843                 .doit = nl80211_stop_sched_scan,
5844                 .policy = nl80211_policy,
5845                 .flags = GENL_ADMIN_PERM,
5846                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5847                                   NL80211_FLAG_NEED_RTNL,
5848         },
5849         {
5850                 .cmd = NL80211_CMD_AUTHENTICATE,
5851                 .doit = nl80211_authenticate,
5852                 .policy = nl80211_policy,
5853                 .flags = GENL_ADMIN_PERM,
5854                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5855                                   NL80211_FLAG_NEED_RTNL,
5856         },
5857         {
5858                 .cmd = NL80211_CMD_ASSOCIATE,
5859                 .doit = nl80211_associate,
5860                 .policy = nl80211_policy,
5861                 .flags = GENL_ADMIN_PERM,
5862                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5863                                   NL80211_FLAG_NEED_RTNL,
5864         },
5865         {
5866                 .cmd = NL80211_CMD_DEAUTHENTICATE,
5867                 .doit = nl80211_deauthenticate,
5868                 .policy = nl80211_policy,
5869                 .flags = GENL_ADMIN_PERM,
5870                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5871                                   NL80211_FLAG_NEED_RTNL,
5872         },
5873         {
5874                 .cmd = NL80211_CMD_DISASSOCIATE,
5875                 .doit = nl80211_disassociate,
5876                 .policy = nl80211_policy,
5877                 .flags = GENL_ADMIN_PERM,
5878                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5879                                   NL80211_FLAG_NEED_RTNL,
5880         },
5881         {
5882                 .cmd = NL80211_CMD_JOIN_IBSS,
5883                 .doit = nl80211_join_ibss,
5884                 .policy = nl80211_policy,
5885                 .flags = GENL_ADMIN_PERM,
5886                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5887                                   NL80211_FLAG_NEED_RTNL,
5888         },
5889         {
5890                 .cmd = NL80211_CMD_LEAVE_IBSS,
5891                 .doit = nl80211_leave_ibss,
5892                 .policy = nl80211_policy,
5893                 .flags = GENL_ADMIN_PERM,
5894                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5895                                   NL80211_FLAG_NEED_RTNL,
5896         },
5897 #ifdef CONFIG_NL80211_TESTMODE
5898         {
5899                 .cmd = NL80211_CMD_TESTMODE,
5900                 .doit = nl80211_testmode_do,
5901                 .dumpit = nl80211_testmode_dump,
5902                 .policy = nl80211_policy,
5903                 .flags = GENL_ADMIN_PERM,
5904                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5905                                   NL80211_FLAG_NEED_RTNL,
5906         },
5907 #endif
5908         {
5909                 .cmd = NL80211_CMD_CONNECT,
5910                 .doit = nl80211_connect,
5911                 .policy = nl80211_policy,
5912                 .flags = GENL_ADMIN_PERM,
5913                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5914                                   NL80211_FLAG_NEED_RTNL,
5915         },
5916         {
5917                 .cmd = NL80211_CMD_DISCONNECT,
5918                 .doit = nl80211_disconnect,
5919                 .policy = nl80211_policy,
5920                 .flags = GENL_ADMIN_PERM,
5921                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5922                                   NL80211_FLAG_NEED_RTNL,
5923         },
5924         {
5925                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5926                 .doit = nl80211_wiphy_netns,
5927                 .policy = nl80211_policy,
5928                 .flags = GENL_ADMIN_PERM,
5929                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5930                                   NL80211_FLAG_NEED_RTNL,
5931         },
5932         {
5933                 .cmd = NL80211_CMD_GET_SURVEY,
5934                 .policy = nl80211_policy,
5935                 .dumpit = nl80211_dump_survey,
5936         },
5937         {
5938                 .cmd = NL80211_CMD_SET_PMKSA,
5939                 .doit = nl80211_setdel_pmksa,
5940                 .policy = nl80211_policy,
5941                 .flags = GENL_ADMIN_PERM,
5942                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5943                                   NL80211_FLAG_NEED_RTNL,
5944         },
5945         {
5946                 .cmd = NL80211_CMD_DEL_PMKSA,
5947                 .doit = nl80211_setdel_pmksa,
5948                 .policy = nl80211_policy,
5949                 .flags = GENL_ADMIN_PERM,
5950                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5951                                   NL80211_FLAG_NEED_RTNL,
5952         },
5953         {
5954                 .cmd = NL80211_CMD_FLUSH_PMKSA,
5955                 .doit = nl80211_flush_pmksa,
5956                 .policy = nl80211_policy,
5957                 .flags = GENL_ADMIN_PERM,
5958                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5959                                   NL80211_FLAG_NEED_RTNL,
5960         },
5961         {
5962                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5963                 .doit = nl80211_remain_on_channel,
5964                 .policy = nl80211_policy,
5965                 .flags = GENL_ADMIN_PERM,
5966                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5967                                   NL80211_FLAG_NEED_RTNL,
5968         },
5969         {
5970                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5971                 .doit = nl80211_cancel_remain_on_channel,
5972                 .policy = nl80211_policy,
5973                 .flags = GENL_ADMIN_PERM,
5974                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5975                                   NL80211_FLAG_NEED_RTNL,
5976         },
5977         {
5978                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5979                 .doit = nl80211_set_tx_bitrate_mask,
5980                 .policy = nl80211_policy,
5981                 .flags = GENL_ADMIN_PERM,
5982                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5983                                   NL80211_FLAG_NEED_RTNL,
5984         },
5985         {
5986                 .cmd = NL80211_CMD_REGISTER_FRAME,
5987                 .doit = nl80211_register_mgmt,
5988                 .policy = nl80211_policy,
5989                 .flags = GENL_ADMIN_PERM,
5990                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5991                                   NL80211_FLAG_NEED_RTNL,
5992         },
5993         {
5994                 .cmd = NL80211_CMD_FRAME,
5995                 .doit = nl80211_tx_mgmt,
5996                 .policy = nl80211_policy,
5997                 .flags = GENL_ADMIN_PERM,
5998                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5999                                   NL80211_FLAG_NEED_RTNL,
6000         },
6001         {
6002                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6003                 .doit = nl80211_tx_mgmt_cancel_wait,
6004                 .policy = nl80211_policy,
6005                 .flags = GENL_ADMIN_PERM,
6006                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6007                                   NL80211_FLAG_NEED_RTNL,
6008         },
6009         {
6010                 .cmd = NL80211_CMD_SET_POWER_SAVE,
6011                 .doit = nl80211_set_power_save,
6012                 .policy = nl80211_policy,
6013                 .flags = GENL_ADMIN_PERM,
6014                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6015                                   NL80211_FLAG_NEED_RTNL,
6016         },
6017         {
6018                 .cmd = NL80211_CMD_GET_POWER_SAVE,
6019                 .doit = nl80211_get_power_save,
6020                 .policy = nl80211_policy,
6021                 /* can be retrieved by unprivileged users */
6022                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6023                                   NL80211_FLAG_NEED_RTNL,
6024         },
6025         {
6026                 .cmd = NL80211_CMD_SET_CQM,
6027                 .doit = nl80211_set_cqm,
6028                 .policy = nl80211_policy,
6029                 .flags = GENL_ADMIN_PERM,
6030                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6031                                   NL80211_FLAG_NEED_RTNL,
6032         },
6033         {
6034                 .cmd = NL80211_CMD_SET_CHANNEL,
6035                 .doit = nl80211_set_channel,
6036                 .policy = nl80211_policy,
6037                 .flags = GENL_ADMIN_PERM,
6038                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6039                                   NL80211_FLAG_NEED_RTNL,
6040         },
6041         {
6042                 .cmd = NL80211_CMD_SET_WDS_PEER,
6043                 .doit = nl80211_set_wds_peer,
6044                 .policy = nl80211_policy,
6045                 .flags = GENL_ADMIN_PERM,
6046                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6047                                   NL80211_FLAG_NEED_RTNL,
6048         },
6049         {
6050                 .cmd = NL80211_CMD_JOIN_MESH,
6051                 .doit = nl80211_join_mesh,
6052                 .policy = nl80211_policy,
6053                 .flags = GENL_ADMIN_PERM,
6054                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6055                                   NL80211_FLAG_NEED_RTNL,
6056         },
6057         {
6058                 .cmd = NL80211_CMD_LEAVE_MESH,
6059                 .doit = nl80211_leave_mesh,
6060                 .policy = nl80211_policy,
6061                 .flags = GENL_ADMIN_PERM,
6062                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6063                                   NL80211_FLAG_NEED_RTNL,
6064         },
6065         {
6066                 .cmd = NL80211_CMD_GET_WOWLAN,
6067                 .doit = nl80211_get_wowlan,
6068                 .policy = nl80211_policy,
6069                 /* can be retrieved by unprivileged users */
6070                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6071                                   NL80211_FLAG_NEED_RTNL,
6072         },
6073         {
6074                 .cmd = NL80211_CMD_SET_WOWLAN,
6075                 .doit = nl80211_set_wowlan,
6076                 .policy = nl80211_policy,
6077                 .flags = GENL_ADMIN_PERM,
6078                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6079                                   NL80211_FLAG_NEED_RTNL,
6080         },
6081         {
6082                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6083                 .doit = nl80211_set_rekey_data,
6084                 .policy = nl80211_policy,
6085                 .flags = GENL_ADMIN_PERM,
6086                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6087                                   NL80211_FLAG_NEED_RTNL,
6088         },
6089 };
6090
6091 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6092         .name = "mlme",
6093 };
6094
6095 /* multicast groups */
6096 static struct genl_multicast_group nl80211_config_mcgrp = {
6097         .name = "config",
6098 };
6099 static struct genl_multicast_group nl80211_scan_mcgrp = {
6100         .name = "scan",
6101 };
6102 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6103         .name = "regulatory",
6104 };
6105
6106 /* notification functions */
6107
6108 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6109 {
6110         struct sk_buff *msg;
6111
6112         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6113         if (!msg)
6114                 return;
6115
6116         if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6117                 nlmsg_free(msg);
6118                 return;
6119         }
6120
6121         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6122                                 nl80211_config_mcgrp.id, GFP_KERNEL);
6123 }
6124
6125 static int nl80211_add_scan_req(struct sk_buff *msg,
6126                                 struct cfg80211_registered_device *rdev)
6127 {
6128         struct cfg80211_scan_request *req = rdev->scan_req;
6129         struct nlattr *nest;
6130         int i;
6131
6132         ASSERT_RDEV_LOCK(rdev);
6133
6134         if (WARN_ON(!req))
6135                 return 0;
6136
6137         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6138         if (!nest)
6139                 goto nla_put_failure;
6140         for (i = 0; i < req->n_ssids; i++)
6141                 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6142         nla_nest_end(msg, nest);
6143
6144         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6145         if (!nest)
6146                 goto nla_put_failure;
6147         for (i = 0; i < req->n_channels; i++)
6148                 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6149         nla_nest_end(msg, nest);
6150
6151         if (req->ie)
6152                 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6153
6154         return 0;
6155  nla_put_failure:
6156         return -ENOBUFS;
6157 }
6158
6159 static int nl80211_send_scan_msg(struct sk_buff *msg,
6160                                  struct cfg80211_registered_device *rdev,
6161                                  struct net_device *netdev,
6162                                  u32 pid, u32 seq, int flags,
6163                                  u32 cmd)
6164 {
6165         void *hdr;
6166
6167         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6168         if (!hdr)
6169                 return -1;
6170
6171         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6172         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6173
6174         /* ignore errors and send incomplete event anyway */
6175         nl80211_add_scan_req(msg, rdev);
6176
6177         return genlmsg_end(msg, hdr);
6178
6179  nla_put_failure:
6180         genlmsg_cancel(msg, hdr);
6181         return -EMSGSIZE;
6182 }
6183
6184 static int
6185 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6186                             struct cfg80211_registered_device *rdev,
6187                             struct net_device *netdev,
6188                             u32 pid, u32 seq, int flags, u32 cmd)
6189 {
6190         void *hdr;
6191
6192         hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6193         if (!hdr)
6194                 return -1;
6195
6196         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6197         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6198
6199         return genlmsg_end(msg, hdr);
6200
6201  nla_put_failure:
6202         genlmsg_cancel(msg, hdr);
6203         return -EMSGSIZE;
6204 }
6205
6206 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6207                              struct net_device *netdev)
6208 {
6209         struct sk_buff *msg;
6210
6211         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6212         if (!msg)
6213                 return;
6214
6215         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6216                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
6217                 nlmsg_free(msg);
6218                 return;
6219         }
6220
6221         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6222                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6223 }
6224
6225 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6226                             struct net_device *netdev)
6227 {
6228         struct sk_buff *msg;
6229
6230         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6231         if (!msg)
6232                 return;
6233
6234         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6235                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6236                 nlmsg_free(msg);
6237                 return;
6238         }
6239
6240         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6241                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6242 }
6243
6244 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6245                                struct net_device *netdev)
6246 {
6247         struct sk_buff *msg;
6248
6249         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6250         if (!msg)
6251                 return;
6252
6253         if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6254                                   NL80211_CMD_SCAN_ABORTED) < 0) {
6255                 nlmsg_free(msg);
6256                 return;
6257         }
6258
6259         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6260                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6261 }
6262
6263 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6264                                      struct net_device *netdev)
6265 {
6266         struct sk_buff *msg;
6267
6268         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6269         if (!msg)
6270                 return;
6271
6272         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6273                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6274                 nlmsg_free(msg);
6275                 return;
6276         }
6277
6278         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6279                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6280 }
6281
6282 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6283                              struct net_device *netdev, u32 cmd)
6284 {
6285         struct sk_buff *msg;
6286
6287         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6288         if (!msg)
6289                 return;
6290
6291         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6292                 nlmsg_free(msg);
6293                 return;
6294         }
6295
6296         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6297                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
6298 }
6299
6300 /*
6301  * This can happen on global regulatory changes or device specific settings
6302  * based on custom world regulatory domains.
6303  */
6304 void nl80211_send_reg_change_event(struct regulatory_request *request)
6305 {
6306         struct sk_buff *msg;
6307         void *hdr;
6308
6309         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6310         if (!msg)
6311                 return;
6312
6313         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6314         if (!hdr) {
6315                 nlmsg_free(msg);
6316                 return;
6317         }
6318
6319         /* Userspace can always count this one always being set */
6320         NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6321
6322         if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6323                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6324                            NL80211_REGDOM_TYPE_WORLD);
6325         else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6326                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6327                            NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6328         else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6329                  request->intersect)
6330                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6331                            NL80211_REGDOM_TYPE_INTERSECTION);
6332         else {
6333                 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6334                            NL80211_REGDOM_TYPE_COUNTRY);
6335                 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6336         }
6337
6338         if (wiphy_idx_valid(request->wiphy_idx))
6339                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6340
6341         if (genlmsg_end(msg, hdr) < 0) {
6342                 nlmsg_free(msg);
6343                 return;
6344         }
6345
6346         rcu_read_lock();
6347         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6348                                 GFP_ATOMIC);
6349         rcu_read_unlock();
6350
6351         return;
6352
6353 nla_put_failure:
6354         genlmsg_cancel(msg, hdr);
6355         nlmsg_free(msg);
6356 }
6357
6358 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6359                                     struct net_device *netdev,
6360                                     const u8 *buf, size_t len,
6361                                     enum nl80211_commands cmd, gfp_t gfp)
6362 {
6363         struct sk_buff *msg;
6364         void *hdr;
6365
6366         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6367         if (!msg)
6368                 return;
6369
6370         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6371         if (!hdr) {
6372                 nlmsg_free(msg);
6373                 return;
6374         }
6375
6376         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6377         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6378         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6379
6380         if (genlmsg_end(msg, hdr) < 0) {
6381                 nlmsg_free(msg);
6382                 return;
6383         }
6384
6385         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6386                                 nl80211_mlme_mcgrp.id, gfp);
6387         return;
6388
6389  nla_put_failure:
6390         genlmsg_cancel(msg, hdr);
6391         nlmsg_free(msg);
6392 }
6393
6394 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6395                           struct net_device *netdev, const u8 *buf,
6396                           size_t len, gfp_t gfp)
6397 {
6398         nl80211_send_mlme_event(rdev, netdev, buf, len,
6399                                 NL80211_CMD_AUTHENTICATE, gfp);
6400 }
6401
6402 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6403                            struct net_device *netdev, const u8 *buf,
6404                            size_t len, gfp_t gfp)
6405 {
6406         nl80211_send_mlme_event(rdev, netdev, buf, len,
6407                                 NL80211_CMD_ASSOCIATE, gfp);
6408 }
6409
6410 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6411                          struct net_device *netdev, const u8 *buf,
6412                          size_t len, gfp_t gfp)
6413 {
6414         nl80211_send_mlme_event(rdev, netdev, buf, len,
6415                                 NL80211_CMD_DEAUTHENTICATE, gfp);
6416 }
6417
6418 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6419                            struct net_device *netdev, const u8 *buf,
6420                            size_t len, gfp_t gfp)
6421 {
6422         nl80211_send_mlme_event(rdev, netdev, buf, len,
6423                                 NL80211_CMD_DISASSOCIATE, gfp);
6424 }
6425
6426 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6427                                 struct net_device *netdev, const u8 *buf,
6428                                 size_t len, gfp_t gfp)
6429 {
6430         nl80211_send_mlme_event(rdev, netdev, buf, len,
6431                                 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6432 }
6433
6434 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6435                                   struct net_device *netdev, const u8 *buf,
6436                                   size_t len, gfp_t gfp)
6437 {
6438         nl80211_send_mlme_event(rdev, netdev, buf, len,
6439                                 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6440 }
6441
6442 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6443                                       struct net_device *netdev, int cmd,
6444                                       const u8 *addr, gfp_t gfp)
6445 {
6446         struct sk_buff *msg;
6447         void *hdr;
6448
6449         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6450         if (!msg)
6451                 return;
6452
6453         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6454         if (!hdr) {
6455                 nlmsg_free(msg);
6456                 return;
6457         }
6458
6459         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6460         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6461         NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6462         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6463
6464         if (genlmsg_end(msg, hdr) < 0) {
6465                 nlmsg_free(msg);
6466                 return;
6467         }
6468
6469         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6470                                 nl80211_mlme_mcgrp.id, gfp);
6471         return;
6472
6473  nla_put_failure:
6474         genlmsg_cancel(msg, hdr);
6475         nlmsg_free(msg);
6476 }
6477
6478 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6479                                struct net_device *netdev, const u8 *addr,
6480                                gfp_t gfp)
6481 {
6482         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6483                                   addr, gfp);
6484 }
6485
6486 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6487                                 struct net_device *netdev, const u8 *addr,
6488                                 gfp_t gfp)
6489 {
6490         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6491                                   addr, gfp);
6492 }
6493
6494 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6495                                  struct net_device *netdev, const u8 *bssid,
6496                                  const u8 *req_ie, size_t req_ie_len,
6497                                  const u8 *resp_ie, size_t resp_ie_len,
6498                                  u16 status, gfp_t gfp)
6499 {
6500         struct sk_buff *msg;
6501         void *hdr;
6502
6503         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6504         if (!msg)
6505                 return;
6506
6507         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6508         if (!hdr) {
6509                 nlmsg_free(msg);
6510                 return;
6511         }
6512
6513         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6514         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6515         if (bssid)
6516                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6517         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6518         if (req_ie)
6519                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6520         if (resp_ie)
6521                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6522
6523         if (genlmsg_end(msg, hdr) < 0) {
6524                 nlmsg_free(msg);
6525                 return;
6526         }
6527
6528         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6529                                 nl80211_mlme_mcgrp.id, gfp);
6530         return;
6531
6532  nla_put_failure:
6533         genlmsg_cancel(msg, hdr);
6534         nlmsg_free(msg);
6535
6536 }
6537
6538 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6539                          struct net_device *netdev, const u8 *bssid,
6540                          const u8 *req_ie, size_t req_ie_len,
6541                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6542 {
6543         struct sk_buff *msg;
6544         void *hdr;
6545
6546         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6547         if (!msg)
6548                 return;
6549
6550         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6551         if (!hdr) {
6552                 nlmsg_free(msg);
6553                 return;
6554         }
6555
6556         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6557         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6558         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6559         if (req_ie)
6560                 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6561         if (resp_ie)
6562                 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6563
6564         if (genlmsg_end(msg, hdr) < 0) {
6565                 nlmsg_free(msg);
6566                 return;
6567         }
6568
6569         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6570                                 nl80211_mlme_mcgrp.id, gfp);
6571         return;
6572
6573  nla_put_failure:
6574         genlmsg_cancel(msg, hdr);
6575         nlmsg_free(msg);
6576
6577 }
6578
6579 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6580                                struct net_device *netdev, u16 reason,
6581                                const u8 *ie, size_t ie_len, bool from_ap)
6582 {
6583         struct sk_buff *msg;
6584         void *hdr;
6585
6586         msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6587         if (!msg)
6588                 return;
6589
6590         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6591         if (!hdr) {
6592                 nlmsg_free(msg);
6593                 return;
6594         }
6595
6596         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6597         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6598         if (from_ap && reason)
6599                 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6600         if (from_ap)
6601                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6602         if (ie)
6603                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6604
6605         if (genlmsg_end(msg, hdr) < 0) {
6606                 nlmsg_free(msg);
6607                 return;
6608         }
6609
6610         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6611                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6612         return;
6613
6614  nla_put_failure:
6615         genlmsg_cancel(msg, hdr);
6616         nlmsg_free(msg);
6617
6618 }
6619
6620 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6621                              struct net_device *netdev, const u8 *bssid,
6622                              gfp_t gfp)
6623 {
6624         struct sk_buff *msg;
6625         void *hdr;
6626
6627         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6628         if (!msg)
6629                 return;
6630
6631         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6632         if (!hdr) {
6633                 nlmsg_free(msg);
6634                 return;
6635         }
6636
6637         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6638         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6639         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6640
6641         if (genlmsg_end(msg, hdr) < 0) {
6642                 nlmsg_free(msg);
6643                 return;
6644         }
6645
6646         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6647                                 nl80211_mlme_mcgrp.id, gfp);
6648         return;
6649
6650  nla_put_failure:
6651         genlmsg_cancel(msg, hdr);
6652         nlmsg_free(msg);
6653 }
6654
6655 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6656                 struct net_device *netdev,
6657                 const u8 *macaddr, const u8* ie, u8 ie_len,
6658                 gfp_t gfp)
6659 {
6660         struct sk_buff *msg;
6661         void *hdr;
6662
6663         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6664         if (!msg)
6665                 return;
6666
6667         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6668         if (!hdr) {
6669                 nlmsg_free(msg);
6670                 return;
6671         }
6672
6673         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6674         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6675         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6676         if (ie_len && ie)
6677                 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6678
6679         if (genlmsg_end(msg, hdr) < 0) {
6680                 nlmsg_free(msg);
6681                 return;
6682         }
6683
6684         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6685                                 nl80211_mlme_mcgrp.id, gfp);
6686         return;
6687
6688  nla_put_failure:
6689         genlmsg_cancel(msg, hdr);
6690         nlmsg_free(msg);
6691 }
6692
6693 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6694                                  struct net_device *netdev, const u8 *addr,
6695                                  enum nl80211_key_type key_type, int key_id,
6696                                  const u8 *tsc, gfp_t gfp)
6697 {
6698         struct sk_buff *msg;
6699         void *hdr;
6700
6701         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6702         if (!msg)
6703                 return;
6704
6705         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6706         if (!hdr) {
6707                 nlmsg_free(msg);
6708                 return;
6709         }
6710
6711         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6712         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6713         if (addr)
6714                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6715         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6716         if (key_id != -1)
6717                 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6718         if (tsc)
6719                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6720
6721         if (genlmsg_end(msg, hdr) < 0) {
6722                 nlmsg_free(msg);
6723                 return;
6724         }
6725
6726         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6727                                 nl80211_mlme_mcgrp.id, gfp);
6728         return;
6729
6730  nla_put_failure:
6731         genlmsg_cancel(msg, hdr);
6732         nlmsg_free(msg);
6733 }
6734
6735 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
6736                                     struct ieee80211_channel *channel_before,
6737                                     struct ieee80211_channel *channel_after)
6738 {
6739         struct sk_buff *msg;
6740         void *hdr;
6741         struct nlattr *nl_freq;
6742
6743         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6744         if (!msg)
6745                 return;
6746
6747         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
6748         if (!hdr) {
6749                 nlmsg_free(msg);
6750                 return;
6751         }
6752
6753         /*
6754          * Since we are applying the beacon hint to a wiphy we know its
6755          * wiphy_idx is valid
6756          */
6757         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
6758
6759         /* Before */
6760         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
6761         if (!nl_freq)
6762                 goto nla_put_failure;
6763         if (nl80211_msg_put_channel(msg, channel_before))
6764                 goto nla_put_failure;
6765         nla_nest_end(msg, nl_freq);
6766
6767         /* After */
6768         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
6769         if (!nl_freq)
6770                 goto nla_put_failure;
6771         if (nl80211_msg_put_channel(msg, channel_after))
6772                 goto nla_put_failure;
6773         nla_nest_end(msg, nl_freq);
6774
6775         if (genlmsg_end(msg, hdr) < 0) {
6776                 nlmsg_free(msg);
6777                 return;
6778         }
6779
6780         rcu_read_lock();
6781         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6782                                 GFP_ATOMIC);
6783         rcu_read_unlock();
6784
6785         return;
6786
6787 nla_put_failure:
6788         genlmsg_cancel(msg, hdr);
6789         nlmsg_free(msg);
6790 }
6791
6792 static void nl80211_send_remain_on_chan_event(
6793         int cmd, struct cfg80211_registered_device *rdev,
6794         struct net_device *netdev, u64 cookie,
6795         struct ieee80211_channel *chan,
6796         enum nl80211_channel_type channel_type,
6797         unsigned int duration, gfp_t gfp)
6798 {
6799         struct sk_buff *msg;
6800         void *hdr;
6801
6802         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6803         if (!msg)
6804                 return;
6805
6806         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6807         if (!hdr) {
6808                 nlmsg_free(msg);
6809                 return;
6810         }
6811
6812         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6813         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6814         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
6815         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
6816         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6817
6818         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
6819                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6820
6821         if (genlmsg_end(msg, hdr) < 0) {
6822                 nlmsg_free(msg);
6823                 return;
6824         }
6825
6826         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6827                                 nl80211_mlme_mcgrp.id, gfp);
6828         return;
6829
6830  nla_put_failure:
6831         genlmsg_cancel(msg, hdr);
6832         nlmsg_free(msg);
6833 }
6834
6835 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
6836                                     struct net_device *netdev, u64 cookie,
6837                                     struct ieee80211_channel *chan,
6838                                     enum nl80211_channel_type channel_type,
6839                                     unsigned int duration, gfp_t gfp)
6840 {
6841         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
6842                                           rdev, netdev, cookie, chan,
6843                                           channel_type, duration, gfp);
6844 }
6845
6846 void nl80211_send_remain_on_channel_cancel(
6847         struct cfg80211_registered_device *rdev, struct net_device *netdev,
6848         u64 cookie, struct ieee80211_channel *chan,
6849         enum nl80211_channel_type channel_type, gfp_t gfp)
6850 {
6851         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6852                                           rdev, netdev, cookie, chan,
6853                                           channel_type, 0, gfp);
6854 }
6855
6856 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
6857                             struct net_device *dev, const u8 *mac_addr,
6858                             struct station_info *sinfo, gfp_t gfp)
6859 {
6860         struct sk_buff *msg;
6861
6862         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6863         if (!msg)
6864                 return;
6865
6866         if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
6867                 nlmsg_free(msg);
6868                 return;
6869         }
6870
6871         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6872                                 nl80211_mlme_mcgrp.id, gfp);
6873 }
6874
6875 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
6876                                 struct net_device *dev, const u8 *mac_addr,
6877                                 gfp_t gfp)
6878 {
6879         struct sk_buff *msg;
6880         void *hdr;
6881
6882         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6883         if (!msg)
6884                 return;
6885
6886         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
6887         if (!hdr) {
6888                 nlmsg_free(msg);
6889                 return;
6890         }
6891
6892         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
6893         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
6894
6895         if (genlmsg_end(msg, hdr) < 0) {
6896                 nlmsg_free(msg);
6897                 return;
6898         }
6899
6900         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6901                                 nl80211_mlme_mcgrp.id, gfp);
6902         return;
6903
6904  nla_put_failure:
6905         genlmsg_cancel(msg, hdr);
6906         nlmsg_free(msg);
6907 }
6908
6909 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
6910                       struct net_device *netdev, u32 nlpid,
6911                       int freq, const u8 *buf, size_t len, gfp_t gfp)
6912 {
6913         struct sk_buff *msg;
6914         void *hdr;
6915         int err;
6916
6917         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6918         if (!msg)
6919                 return -ENOMEM;
6920
6921         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
6922         if (!hdr) {
6923                 nlmsg_free(msg);
6924                 return -ENOMEM;
6925         }
6926
6927         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6928         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6929         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6930         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6931
6932         err = genlmsg_end(msg, hdr);
6933         if (err < 0) {
6934                 nlmsg_free(msg);
6935                 return err;
6936         }
6937
6938         err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
6939         if (err < 0)
6940                 return err;
6941         return 0;
6942
6943  nla_put_failure:
6944         genlmsg_cancel(msg, hdr);
6945         nlmsg_free(msg);
6946         return -ENOBUFS;
6947 }
6948
6949 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
6950                                  struct net_device *netdev, u64 cookie,
6951                                  const u8 *buf, size_t len, bool ack,
6952                                  gfp_t gfp)
6953 {
6954         struct sk_buff *msg;
6955         void *hdr;
6956
6957         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6958         if (!msg)
6959                 return;
6960
6961         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
6962         if (!hdr) {
6963                 nlmsg_free(msg);
6964                 return;
6965         }
6966
6967         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6968         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6969         NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6970         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6971         if (ack)
6972                 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
6973
6974         if (genlmsg_end(msg, hdr) < 0) {
6975                 nlmsg_free(msg);
6976                 return;
6977         }
6978
6979         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
6980         return;
6981
6982  nla_put_failure:
6983         genlmsg_cancel(msg, hdr);
6984         nlmsg_free(msg);
6985 }
6986
6987 void
6988 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
6989                              struct net_device *netdev,
6990                              enum nl80211_cqm_rssi_threshold_event rssi_event,
6991                              gfp_t gfp)
6992 {
6993         struct sk_buff *msg;
6994         struct nlattr *pinfoattr;
6995         void *hdr;
6996
6997         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6998         if (!msg)
6999                 return;
7000
7001         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7002         if (!hdr) {
7003                 nlmsg_free(msg);
7004                 return;
7005         }
7006
7007         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7008         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7009
7010         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7011         if (!pinfoattr)
7012                 goto nla_put_failure;
7013
7014         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7015                     rssi_event);
7016
7017         nla_nest_end(msg, pinfoattr);
7018
7019         if (genlmsg_end(msg, hdr) < 0) {
7020                 nlmsg_free(msg);
7021                 return;
7022         }
7023
7024         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7025                                 nl80211_mlme_mcgrp.id, gfp);
7026         return;
7027
7028  nla_put_failure:
7029         genlmsg_cancel(msg, hdr);
7030         nlmsg_free(msg);
7031 }
7032
7033 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7034                               struct net_device *netdev, const u8 *bssid,
7035                               const u8 *replay_ctr, gfp_t gfp)
7036 {
7037         struct sk_buff *msg;
7038         struct nlattr *rekey_attr;
7039         void *hdr;
7040
7041         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7042         if (!msg)
7043                 return;
7044
7045         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7046         if (!hdr) {
7047                 nlmsg_free(msg);
7048                 return;
7049         }
7050
7051         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7052         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7053         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7054
7055         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7056         if (!rekey_attr)
7057                 goto nla_put_failure;
7058
7059         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7060                 NL80211_REPLAY_CTR_LEN, replay_ctr);
7061
7062         nla_nest_end(msg, rekey_attr);
7063
7064         if (genlmsg_end(msg, hdr) < 0) {
7065                 nlmsg_free(msg);
7066                 return;
7067         }
7068
7069         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7070                                 nl80211_mlme_mcgrp.id, gfp);
7071         return;
7072
7073  nla_put_failure:
7074         genlmsg_cancel(msg, hdr);
7075         nlmsg_free(msg);
7076 }
7077
7078 void
7079 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7080                                 struct net_device *netdev, const u8 *peer,
7081                                 u32 num_packets, gfp_t gfp)
7082 {
7083         struct sk_buff *msg;
7084         struct nlattr *pinfoattr;
7085         void *hdr;
7086
7087         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7088         if (!msg)
7089                 return;
7090
7091         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7092         if (!hdr) {
7093                 nlmsg_free(msg);
7094                 return;
7095         }
7096
7097         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7098         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7099         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7100
7101         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7102         if (!pinfoattr)
7103                 goto nla_put_failure;
7104
7105         NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7106
7107         nla_nest_end(msg, pinfoattr);
7108
7109         if (genlmsg_end(msg, hdr) < 0) {
7110                 nlmsg_free(msg);
7111                 return;
7112         }
7113
7114         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7115                                 nl80211_mlme_mcgrp.id, gfp);
7116         return;
7117
7118  nla_put_failure:
7119         genlmsg_cancel(msg, hdr);
7120         nlmsg_free(msg);
7121 }
7122
7123 static int nl80211_netlink_notify(struct notifier_block * nb,
7124                                   unsigned long state,
7125                                   void *_notify)
7126 {
7127         struct netlink_notify *notify = _notify;
7128         struct cfg80211_registered_device *rdev;
7129         struct wireless_dev *wdev;
7130
7131         if (state != NETLINK_URELEASE)
7132                 return NOTIFY_DONE;
7133
7134         rcu_read_lock();
7135
7136         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7137                 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7138                         cfg80211_mlme_unregister_socket(wdev, notify->pid);
7139
7140         rcu_read_unlock();
7141
7142         return NOTIFY_DONE;
7143 }
7144
7145 static struct notifier_block nl80211_netlink_notifier = {
7146         .notifier_call = nl80211_netlink_notify,
7147 };
7148
7149 /* initialisation/exit functions */
7150
7151 int nl80211_init(void)
7152 {
7153         int err;
7154
7155         err = genl_register_family_with_ops(&nl80211_fam,
7156                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7157         if (err)
7158                 return err;
7159
7160         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7161         if (err)
7162                 goto err_out;
7163
7164         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7165         if (err)
7166                 goto err_out;
7167
7168         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7169         if (err)
7170                 goto err_out;
7171
7172         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7173         if (err)
7174                 goto err_out;
7175
7176 #ifdef CONFIG_NL80211_TESTMODE
7177         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7178         if (err)
7179                 goto err_out;
7180 #endif
7181
7182         err = netlink_register_notifier(&nl80211_netlink_notifier);
7183         if (err)
7184                 goto err_out;
7185
7186         return 0;
7187  err_out:
7188         genl_unregister_family(&nl80211_fam);
7189         return err;
7190 }
7191
7192 void nl80211_exit(void)
7193 {
7194         netlink_unregister_notifier(&nl80211_netlink_notifier);
7195         genl_unregister_family(&nl80211_fam);
7196 }