package/mac80211/patches/310-ibss_ht.patch

   1 --- a/include/net/cfg80211.h
   2 +++ b/include/net/cfg80211.h
   3 @@ -1038,6 +1038,7 @@ struct cfg80211_ibss_params {
   4         u8 *ssid;
   5         u8 *bssid;
   6         struct ieee80211_channel *channel;
   7 +       enum nl80211_channel_type channel_type;
   8         u8 *ie;
   9         u8 ssid_len, ie_len;
  10         u16 beacon_interval;
  11 @@ -2539,6 +2540,12 @@ struct cfg80211_bss *cfg80211_get_bss(st
  12                                       const u8 *bssid,
  13                                       const u8 *ssid, size_t ssid_len,
  14                                       u16 capa_mask, u16 capa_val);
  15 +struct cfg80211_bss *cfg80211_get_bss_ht(struct wiphy *wiphy,
  16 +                                         struct ieee80211_channel *channel,
  17 +                                         const u8 *bssid,
  18 +                                         const u8 *ssid, size_t ssid_len,
  19 +                                         u16 capa_mask, u16 capa_val,
  20 +                                      enum nl80211_channel_type channel_type);
  21  static inline struct cfg80211_bss *
  22  cfg80211_get_ibss(struct wiphy *wiphy,
  23                   struct ieee80211_channel *channel,
  24 --- a/net/mac80211/ieee80211_i.h
  25 +++ b/net/mac80211/ieee80211_i.h
  26 @@ -439,6 +439,7 @@ struct ieee80211_if_ibss {
  27         u8 ssid_len, ie_len;
  28         u8 *ie;
  29         struct ieee80211_channel *channel;
  30 +       enum nl80211_channel_type channel_type;
  31
  32         unsigned long ibss_join_req;
  33         /* probe response/beacon for IBSS */
  34 @@ -1121,6 +1122,7 @@ void ieee80211_ibss_notify_scan_complete
  35  void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
  36  struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
  37                                         u8 *bssid, u8 *addr, u32 supp_rates,
  38 +                                       struct ieee80211_ht_cap *ht_cap,
  39                                         gfp_t gfp);
  40  int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
  41                         struct cfg80211_ibss_params *params);
  42 @@ -1373,6 +1375,12 @@ void ieee80211_recalc_smps(struct ieee80
  43  size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
  44                           const u8 *ids, int n_ids, size_t offset);
  45  size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
  46 +u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_supported_band *sband,
  47 +                              u16 cap);
  48 +u8 *ieee80211_ie_build_ht_info(u8 *pos,
  49 +                               struct ieee80211_sta_ht_cap *ht_cap,
  50 +                               struct ieee80211_channel *channel,
  51 +                               enum nl80211_channel_type channel_type);
  52
  53  /* internal work items */
  54  void ieee80211_work_init(struct ieee80211_local *local);
  55 @@ -1401,6 +1409,8 @@ ieee80211_get_channel_mode(struct ieee80
  56  bool ieee80211_set_channel_type(struct ieee80211_local *local,
  57                                 struct ieee80211_sub_if_data *sdata,
  58                                 enum nl80211_channel_type chantype);
  59 +enum nl80211_channel_type ieee80211_ht_info_to_channel_type(
  60 +                                       struct ieee80211_ht_info *ht_info);
  61
  62  #ifdef CONFIG_MAC80211_NOINLINE
  63  #define debug_noinline noinline
  64 --- a/net/mac80211/util.c
  65 +++ b/net/mac80211/util.c
  66 @@ -1007,23 +1007,8 @@ int ieee80211_build_preq_ies(struct ieee
  67                 offset = noffset;
  68         }
  69
  70 -       if (sband->ht_cap.ht_supported) {
  71 -               u16 cap = sband->ht_cap.cap;
  72 -               __le16 tmp;
  73 -
  74 -               *pos++ = WLAN_EID_HT_CAPABILITY;
  75 -               *pos++ = sizeof(struct ieee80211_ht_cap);
  76 -               memset(pos, 0, sizeof(struct ieee80211_ht_cap));
  77 -               tmp = cpu_to_le16(cap);
  78 -               memcpy(pos, &tmp, sizeof(u16));
  79 -               pos += sizeof(u16);
  80 -               *pos++ = sband->ht_cap.ampdu_factor |
  81 -                        (sband->ht_cap.ampdu_density <<
  82 -                               IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
  83 -               memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
  84 -               pos += sizeof(sband->ht_cap.mcs);
  85 -               pos += 2 + 4 + 1; /* ext info, BF cap, antsel */
  86 -       }
  87 +       if (sband->ht_cap.ht_supported)
  88 +               pos = ieee80211_ie_build_ht_cap(pos, sband, sband->ht_cap.cap);
  89
  90         /*
  91          * If adding more here, adjust code in main.c
  92 @@ -1464,3 +1449,100 @@ size_t ieee80211_ie_split_vendor(const u
  93
  94         return pos;
  95  }
  96 +
  97 +u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_supported_band *sband,
  98 +                              u16 cap)
  99 +{
 100 +       __le16 tmp;
 101 +
 102 +       *pos++ = WLAN_EID_HT_CAPABILITY;
 103 +       *pos++ = sizeof(struct ieee80211_ht_cap);
 104 +       memset(pos, 0, sizeof(struct ieee80211_ht_cap));
 105 +
 106 +       /* capability flags */
 107 +       tmp = cpu_to_le16(cap);
 108 +       memcpy(pos, &tmp, sizeof(u16));
 109 +       pos += sizeof(u16);
 110 +
 111 +       /* AMPDU parameters */
 112 +       *pos++ = sband->ht_cap.ampdu_factor |
 113 +                (sband->ht_cap.ampdu_density <<
 114 +                       IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
 115 +
 116 +       /* MCS set */
 117 +       memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
 118 +       pos += sizeof(sband->ht_cap.mcs);
 119 +
 120 +       /* extended capabilities */
 121 +       pos += sizeof(__le16);
 122 +
 123 +       /* BF capabilities */
 124 +       pos += sizeof(__le32);
 125 +
 126 +       /* antenna selection */
 127 +       pos += sizeof(u8);
 128 +
 129 +       return pos;
 130 +}
 131 +
 132 +u8 *ieee80211_ie_build_ht_info(u8 *pos,
 133 +                               struct ieee80211_sta_ht_cap *ht_cap,
 134 +                               struct ieee80211_channel *channel,
 135 +                               enum nl80211_channel_type channel_type)
 136 +{
 137 +       struct ieee80211_ht_info *ht_info;
 138 +       /* Build HT Information */
 139 +       *pos++ = WLAN_EID_HT_INFORMATION;
 140 +       *pos++ = sizeof(struct ieee80211_ht_info);
 141 +       ht_info = (struct ieee80211_ht_info *)pos;
 142 +       ht_info->control_chan =
 143 +                       ieee80211_frequency_to_channel(channel->center_freq);
 144 +       switch (channel_type) {
 145 +       case NL80211_CHAN_HT40MINUS:
 146 +               ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
 147 +               break;
 148 +       case NL80211_CHAN_HT40PLUS:
 149 +               ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
 150 +               break;
 151 +       case NL80211_CHAN_HT20:
 152 +       default:
 153 +               ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 154 +               break;
 155 +       }
 156 +       if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
 157 +               ht_info->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
 158 +       ht_info->operation_mode = 0x0000;
 159 +       ht_info->stbc_param = 0x0000;
 160 +
 161 +       /* It seems that Basic MCS set and Supported MCS set
 162 +          are identical for the first 10 bytes */
 163 +       memset(&ht_info->basic_set, 0, 16);
 164 +       memcpy(&ht_info->basic_set, &ht_cap->mcs, 10);
 165 +
 166 +       return pos + sizeof(struct ieee80211_ht_info);
 167 +}
 168 +
 169 +enum nl80211_channel_type ieee80211_ht_info_to_channel_type(
 170 +                                       struct ieee80211_ht_info *ht_info)
 171 +{
 172 +       enum nl80211_channel_type channel_type;
 173 +
 174 +       if (!ht_info)
 175 +               return NL80211_CHAN_NO_HT;
 176 +
 177 +       switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
 178 +       case IEEE80211_HT_PARAM_CHA_SEC_NONE:
 179 +               channel_type = NL80211_CHAN_HT20;
 180 +               break;
 181 +       case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 182 +               channel_type = NL80211_CHAN_HT40PLUS;
 183 +               break;
 184 +       case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 185 +               channel_type = NL80211_CHAN_HT40MINUS;
 186 +               break;
 187 +       default:
 188 +               channel_type = NL80211_CHAN_NO_HT;
 189 +       }
 190 +
 191 +       return channel_type;
 192 +}
 193 --- a/net/mac80211/work.c
 194 +++ b/net/mac80211/work.c
 195 @@ -117,7 +117,6 @@ static void ieee80211_add_ht_ie(struct s
 196         u8 *pos;
 197         u32 flags = channel->flags;
 198         u16 cap = sband->ht_cap.cap;
 199 -       __le16 tmp;
 200
 201         if (!sband->ht_cap.ht_supported)
 202                 return;
 203 @@ -168,34 +167,8 @@ static void ieee80211_add_ht_ie(struct s
 204         }
 205
 206         /* reserve and fill IE */
 207 -
 208         pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
 209 -       *pos++ = WLAN_EID_HT_CAPABILITY;
 210 -       *pos++ = sizeof(struct ieee80211_ht_cap);
 211 -       memset(pos, 0, sizeof(struct ieee80211_ht_cap));
 212 -
 213 -       /* capability flags */
 214 -       tmp = cpu_to_le16(cap);
 215 -       memcpy(pos, &tmp, sizeof(u16));
 216 -       pos += sizeof(u16);
 217 -
 218 -       /* AMPDU parameters */
 219 -       *pos++ = sband->ht_cap.ampdu_factor |
 220 -                (sband->ht_cap.ampdu_density <<
 221 -                       IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
 222 -
 223 -       /* MCS set */
 224 -       memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
 225 -       pos += sizeof(sband->ht_cap.mcs);
 226 -
 227 -       /* extended capabilities */
 228 -       pos += sizeof(__le16);
 229 -
 230 -       /* BF capabilities */
 231 -       pos += sizeof(__le32);
 232 -
 233 -       /* antenna selection */
 234 -       pos += sizeof(u8);
 235 +       ieee80211_ie_build_ht_cap(pos, sband, cap);
 236  }
 237
 238  static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
 239 --- a/net/wireless/scan.c
 240 +++ b/net/wireless/scan.c
 241 @@ -365,6 +365,18 @@ struct cfg80211_bss *cfg80211_get_bss(st
 242                                       const u8 *ssid, size_t ssid_len,
 243                                       u16 capa_mask, u16 capa_val)
 244  {
 245 +       return cfg80211_get_bss_ht(wiphy, channel, bssid, ssid, ssid_len,
 246 +                                  capa_mask, capa_val, NL80211_CHAN_NO_HT);
 247 +}
 248 +EXPORT_SYMBOL(cfg80211_get_bss);
 249 +
 250 +struct cfg80211_bss *cfg80211_get_bss_ht(struct wiphy *wiphy,
 251 +                                     struct ieee80211_channel *channel,
 252 +                                     const u8 *bssid,
 253 +                                     const u8 *ssid, size_t ssid_len,
 254 +                                     u16 capa_mask, u16 capa_val,
 255 +                                     enum nl80211_channel_type channel_type)
 256 +{
 257         struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy);
 258         struct cfg80211_internal_bss *bss, *res = NULL;
 259         unsigned long now = jiffies;
 260 @@ -374,8 +386,27 @@ struct cfg80211_bss *cfg80211_get_bss(st
 261         list_for_each_entry(bss, &dev->bss_list, list) {
 262                 if ((bss->pub.capability & capa_mask) != capa_val)
 263                         continue;
 264 -               if (channel && bss->pub.channel != channel)
 265 -                       continue;
 266 +               if (channel) {
 267 +                       if (bss->pub.channel != channel)
 268 +                               continue;
 269 +                       if (channel_type == NL80211_CHAN_HT40MINUS ||
 270 +                           channel_type == NL80211_CHAN_HT40PLUS) {
 271 +                               struct ieee80211_ht_info *ht_info;
 272 +                               ht_info = (struct ieee80211_ht_info *)
 273 +                                       ieee80211_bss_get_ie(&bss->pub,
 274 +                                                      WLAN_EID_HT_INFORMATION);
 275 +                               if (!ht_info)
 276 +                                       continue;
 277 +                               if (channel_type == NL80211_CHAN_HT40MINUS &&
 278 +                                             !(ht_info->ht_param &
 279 +                                             IEEE80211_HT_PARAM_CHA_SEC_BELOW))
 280 +                                       continue;
 281 +                               if (channel_type == NL80211_CHAN_HT40PLUS &&
 282 +                                             !(ht_info->ht_param &
 283 +                                             IEEE80211_HT_PARAM_CHA_SEC_ABOVE))
 284 +                                       continue;
 285 +                       }
 286 +               }
 287                 /* Don't get expired BSS structs */
 288                 if (time_after(now, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE) &&
 289                     !atomic_read(&bss->hold))
 290 @@ -392,7 +423,7 @@ struct cfg80211_bss *cfg80211_get_bss(st
 291                 return NULL;
 292         return &res->pub;
 293  }
 294 -EXPORT_SYMBOL(cfg80211_get_bss);
 295 +EXPORT_SYMBOL(cfg80211_get_bss_ht);
 296
 297  struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
 298                                        struct ieee80211_channel *channel,
 299 --- a/net/wireless/nl80211.c
 300 +++ b/net/wireless/nl80211.c
 301 @@ -4282,13 +4282,42 @@ static int nl80211_join_ibss(struct sk_b
 302                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
 303         }
 304
 305 -       ibss.channel = ieee80211_get_channel(wiphy,
 306 -               nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
 307 +       if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
 308 +               enum nl80211_channel_type channel_type;
 309 +
 310 +               channel_type = nla_get_u32(
 311 +                       info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
 312 +               if (channel_type != NL80211_CHAN_NO_HT &&
 313 +                   channel_type != NL80211_CHAN_HT20 &&
 314 +                   channel_type != NL80211_CHAN_HT40PLUS &&
 315 +                   channel_type != NL80211_CHAN_HT40MINUS)
 316 +                       return -EINVAL;
 317 +               ibss.channel_type = channel_type;
 318 +       } else {
 319 +               ibss.channel_type = NL80211_CHAN_NO_HT;
 320 +       }
 321 +
 322 +       ibss.channel = rdev_freq_to_chan(rdev,
 323 +               nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
 324 +               ibss.channel_type);
 325 +
 326         if (!ibss.channel ||
 327 +           ibss.channel->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
 328             ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
 329             ibss.channel->flags & IEEE80211_CHAN_DISABLED)
 330                 return -EINVAL;
 331
 332 +#if 0
 333 +       if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
 334 +            ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
 335 +           !can_beacon_sec_chan(&rdev->wiphy, ibss.chan, ibss.channel_type)) {
 336 +               printk(KERN_DEBUG
 337 +                      "cfg80211: Secondary channel not "
 338 +                      "allowed to initiate communication\n");
 339 +               return -EINVAL;
 340 +       }
 341 +#endif
 342 +
 343         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
 344         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
 345
 346 --- a/net/mac80211/agg-rx.c
 347 +++ b/net/mac80211/agg-rx.c
 348 @@ -178,6 +178,8 @@ static void ieee80211_send_addba_resp(st
 349                 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
 350         else if (sdata->vif.type == NL80211_IFTYPE_WDS)
 351                 memcpy(mgmt->bssid, da, ETH_ALEN);
 352 +       else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 353 +               memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN);
 354
 355         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 356                                           IEEE80211_STYPE_ACTION);
 357 --- a/net/mac80211/agg-tx.c
 358 +++ b/net/mac80211/agg-tx.c
 359 @@ -84,6 +84,8 @@ static void ieee80211_send_addba_request
 360                 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
 361         else if (sdata->vif.type == NL80211_IFTYPE_STATION)
 362                 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
 363 +       else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 364 +               memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN);
 365
 366         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 367                                           IEEE80211_STYPE_ACTION);
 368 @@ -400,7 +402,8 @@ int ieee80211_start_tx_ba_session(struct
 369         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 370             sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 371             sdata->vif.type != NL80211_IFTYPE_AP &&
 372 -           sdata->vif.type != NL80211_IFTYPE_WDS)
 373 +           sdata->vif.type != NL80211_IFTYPE_WDS &&
 374 +           sdata->vif.type != NL80211_IFTYPE_ADHOC)
 375                 return -EINVAL;
 376
 377         if (test_sta_flags(sta, WLAN_STA_BLOCK_BA)) {
 378 --- a/net/mac80211/ht.c
 379 +++ b/net/mac80211/ht.c
 380 @@ -203,6 +203,8 @@ void ieee80211_send_delba(struct ieee802
 381                 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
 382         else if (sdata->vif.type == NL80211_IFTYPE_STATION)
 383                 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
 384 +       else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
 385 +               memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN);
 386
 387         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 388                                           IEEE80211_STYPE_ACTION);
 389 --- a/net/mac80211/ibss.c
 390 +++ b/net/mac80211/ibss.c
 391 @@ -64,6 +64,7 @@ static void ieee80211_rx_mgmt_auth_ibss(
 392  static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 393                                       const u8 *bssid, const int beacon_int,
 394                                       struct ieee80211_channel *chan,
 395 +                                     enum nl80211_channel_type channel_type,
 396                                       const u32 basic_rates,
 397                                       const u16 capability, u64 tsf)
 398  {
 399 @@ -104,8 +105,12 @@ static void __ieee80211_sta_join_ibss(st
 400
 401         sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
 402
 403 +       /* entering a legacy IBSS. Use given HT configuration. */
 404 +       if (channel_type == NL80211_CHAN_NO_HT)
 405 +               channel_type = ifibss->channel_type;
 406 +
 407         local->oper_channel = chan;
 408 -       WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT));
 409 +       WARN_ON(!ieee80211_set_channel_type(local, sdata, channel_type));
 410         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
 411
 412         sband = local->hw.wiphy->bands[chan->band];
 413 @@ -171,6 +176,17 @@ static void __ieee80211_sta_join_ibss(st
 414                 memcpy(skb_put(skb, ifibss->ie_len),
 415                        ifibss->ie, ifibss->ie_len);
 416
 417 +       if (channel_type != NL80211_CHAN_NO_HT && sband->ht_cap.ht_supported) {
 418 +               pos = skb_put(skb, 4 +
 419 +                                  sizeof(struct ieee80211_ht_cap) +
 420 +                                  sizeof(struct ieee80211_ht_info));
 421 +               pos = ieee80211_ie_build_ht_cap(pos, sband, sband->ht_cap.cap);
 422 +               pos = ieee80211_ie_build_ht_info(pos,
 423 +                                                &sband->ht_cap,
 424 +                                                chan,
 425 +                                                channel_type);
 426 +       }
 427 +
 428         if (local->hw.queues >= 4) {
 429                 pos = skb_put(skb, 9);
 430                 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
 431 @@ -219,6 +235,8 @@ static void ieee80211_sta_join_ibss(stru
 432         u32 basic_rates;
 433         int i, j;
 434         u16 beacon_int = cbss->beacon_interval;
 435 +       const u8 *ht_info_ie;
 436 +       enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
 437
 438         lockdep_assert_held(&sdata->u.ibss.mtx);
 439
 440 @@ -242,9 +260,15 @@ static void ieee80211_sta_join_ibss(stru
 441                 }
 442         }
 443
 444 +       ht_info_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_INFORMATION);
 445 +       if (ht_info_ie)
 446 +               channel_type = ieee80211_ht_info_to_channel_type(
 447 +                       (struct ieee80211_ht_info *) (ht_info_ie + 2));
 448 +
 449         __ieee80211_sta_join_ibss(sdata, cbss->bssid,
 450                                   beacon_int,
 451                                   cbss->channel,
 452 +                                 channel_type,
 453                                   basic_rates,
 454                                   cbss->capability,
 455                                   cbss->tsf);
 456 @@ -310,11 +334,65 @@ static void ieee80211_rx_bss_info(struct
 457                         } else
 458                                 sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid,
 459                                                 mgmt->sa, supp_rates,
 460 -                                               GFP_ATOMIC);
 461 +                                               elems->ht_cap_elem, GFP_ATOMIC);
 462                 }
 463
 464 -               if (sta && elems->wmm_info)
 465 -                       set_sta_flags(sta, WLAN_STA_WME);
 466 +               if (sta) {
 467 +                       if (elems->wmm_info)
 468 +                               set_sta_flags(sta, WLAN_STA_WME);
 469 +
 470 +                       if (elems->ht_info_elem) {
 471 +                               struct ieee80211_supported_band *sband =
 472 +                                       local->hw.wiphy->bands[channel->band];
 473 +                               enum nl80211_channel_type channel_type;
 474 +
 475 +                               channel_type =
 476 +                                       ieee80211_ht_info_to_channel_type(
 477 +                                               elems->ht_info_elem);
 478 +                               if (channel_type != local->_oper_channel_type) {
 479 +                                       struct sk_buff *skb =
 480 +                                                       sdata->u.ibss.presp;
 481 +                                       struct sk_buff *nskb;
 482 +                                       u8 *ht_ie;
 483 +
 484 +                                       nskb = skb_copy(skb, GFP_ATOMIC);
 485 +                                       ht_ie = (u8 *) cfg80211_find_ie(
 486 +                                               WLAN_EID_HT_CAPABILITY,
 487 +                                               nskb->data + 24 +
 488 +                                                       sizeof(mgmt->u.beacon),
 489 +                                               nskb->len - 24 -
 490 +                                                       sizeof(mgmt->u.beacon));
 491 +
 492 +                                       if (!ht_ie)
 493 +                                               ht_ie = skb_put(nskb, 4 +
 494 +                                             sizeof(struct ieee80211_ht_cap) +
 495 +                                             sizeof(struct ieee80211_ht_info));
 496 +                                       ht_ie = ieee80211_ie_build_ht_cap(ht_ie,
 497 +                                                            sband,
 498 +                                                            sband->ht_cap.cap);
 499 +                                       ht_ie = ieee80211_ie_build_ht_info(
 500 +                                                                ht_ie,
 501 +                                                                &sband->ht_cap,
 502 +                                                                channel,
 503 +                                                                channel_type);
 504 +                                       sdata->u.ibss.presp = nskb;
 505 +                                       kfree_skb(skb);
 506 +
 507 +                                       local->_oper_channel_type =
 508 +                                                               channel_type;
 509 +                                       WARN_ON(!ieee80211_set_channel_type(
 510 +                                                               local,
 511 +                                                               sdata,
 512 +                                                               channel_type));
 513 +                                       ieee80211_hw_config(local,
 514 +                                               IEEE80211_CONF_CHANGE_CHANNEL);
 515 +                               }
 516 +                               ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 517 +                                                       elems->ht_cap_elem,
 518 +                                                       &sta->sta.ht_cap);
 519 +
 520 +                       }
 521 +               }
 522
 523                 rcu_read_unlock();
 524         }
 525 @@ -404,7 +482,7 @@ static void ieee80211_rx_bss_info(struct
 526                 ieee80211_sta_join_ibss(sdata, bss);
 527                 supp_rates = ieee80211_sta_get_rates(local, elems, band);
 528                 ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa,
 529 -                                      supp_rates, GFP_KERNEL);
 530 +                                   supp_rates, elems->ht_cap_elem, GFP_KERNEL);
 531         }
 532
 533   put_bss:
 534 @@ -417,7 +495,8 @@ static void ieee80211_rx_bss_info(struct
 535   * must be callable in atomic context.
 536   */
 537  struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
 538 -                                       u8 *bssid,u8 *addr, u32 supp_rates,
 539 +                                       u8 *bssid, u8 *addr, u32 supp_rates,
 540 +                                       struct ieee80211_ht_cap *ht_cap,
 541                                         gfp_t gfp)
 542  {
 543         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 544 @@ -458,6 +537,11 @@ struct sta_info *ieee80211_ibss_add_sta(
 545         sta->sta.supp_rates[band] = supp_rates |
 546                         ieee80211_mandatory_rates(local, band);
 547
 548 +       /* fill in ht rates */
 549 +       if (ht_cap)
 550 +               ieee80211_ht_cap_ie_to_sta_ht_cap(local->hw.wiphy->bands[band],
 551 +                               ht_cap, &sta->sta.ht_cap);
 552 +
 553         rate_control_rate_init(sta);
 554
 555         /* If it fails, maybe we raced another insertion? */
 556 @@ -556,8 +640,8 @@ static void ieee80211_sta_create_ibss(st
 557                 sdata->drop_unencrypted = 0;
 558
 559         __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int,
 560 -                                 ifibss->channel, ifibss->basic_rates,
 561 -                                 capability, 0);
 562 +                                 ifibss->channel, ifibss->channel_type,
 563 +                                 ifibss->basic_rates, capability, 0);
 564  }
 565
 566  /*
 567 @@ -594,10 +678,10 @@ static void ieee80211_sta_find_ibss(stru
 568                 chan = ifibss->channel;
 569         if (!is_zero_ether_addr(ifibss->bssid))
 570                 bssid = ifibss->bssid;
 571 -       cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid,
 572 +       cbss = cfg80211_get_bss_ht(local->hw.wiphy, chan, bssid,
 573                                 ifibss->ssid, ifibss->ssid_len,
 574                                 WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY,
 575 -                               capability);
 576 +                               capability, ifibss->channel_type);
 577
 578         if (cbss) {
 579                 struct ieee80211_bss *bss;
 580 @@ -896,10 +980,15 @@ int ieee80211_ibss_join(struct ieee80211
 581         struct sk_buff *skb;
 582
 583         skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom +
 584 -                           36 /* bitrates */ +
 585 -                           34 /* SSID */ +
 586 -                           3  /* DS params */ +
 587 -                           4  /* IBSS params */ +
 588 +                           sizeof(struct ieee80211_hdr_3addr) +
 589 +                           12 /* struct ieee80211_mgmt.u.beacon */ +
 590 +                           2 + IEEE80211_MAX_SSID_LEN /* max SSID */ +
 591 +                           2 + 8 /* max Supported Rates */ +
 592 +                           3 /* max DS params */ +
 593 +                           4 /* IBSS params */ +
 594 +                           2 + (IEEE80211_MAX_SUPP_RATES - 8) +
 595 +                           2 + sizeof(struct ieee80211_ht_cap) +
 596 +                           2 + sizeof(struct ieee80211_ht_info) +
 597                             params->ie_len);
 598         if (!skb)
 599                 return -ENOMEM;
 600 @@ -920,13 +1009,14 @@ int ieee80211_ibss_join(struct ieee80211
 601         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 602
 603         sdata->u.ibss.channel = params->channel;
 604 +       sdata->u.ibss.channel_type = params->channel_type;
 605         sdata->u.ibss.fixed_channel = params->channel_fixed;
 606
 607         /* fix ourselves to that channel now already */
 608         if (params->channel_fixed) {
 609                 sdata->local->oper_channel = params->channel;
 610                 WARN_ON(!ieee80211_set_channel_type(sdata->local, sdata,
 611 -                                                   NL80211_CHAN_NO_HT));
 612 +                                                   params->channel_type));
 613         }
 614
 615         if (params->ie) {
 616 --- a/net/mac80211/rx.c
 617 +++ b/net/mac80211/rx.c
 618 @@ -2138,7 +2138,8 @@ ieee80211_rx_h_action(struct ieee80211_r
 619                 if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 620                     sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 621                     sdata->vif.type != NL80211_IFTYPE_AP &&
 622 -                   sdata->vif.type != NL80211_IFTYPE_WDS)
 623 +                   sdata->vif.type != NL80211_IFTYPE_WDS &&
 624 +                   sdata->vif.type != NL80211_IFTYPE_ADHOC)
 625                         break;
 626
 627                 /* verify action_code is present */
 628 @@ -2654,7 +2655,8 @@ static int prepare_for_handlers(struct i
 629                         else
 630                                 rate_idx = status->rate_idx;
 631                         rx->sta = ieee80211_ibss_add_sta(sdata, bssid,
 632 -                                       hdr->addr2, BIT(rate_idx), GFP_ATOMIC);
 633 +                                       hdr->addr2, BIT(rate_idx), NULL,
 634 +                                                               GFP_ATOMIC);
 635                 }
 636                 break;
 637         case NL80211_IFTYPE_MESH_POINT: