drivers/net/wireless/marvell/mwifiex/tdls.c

   1 /* Marvell Wireless LAN device driver: TDLS handling
   2  *
   3  * Copyright (C) 2014, Marvell International Ltd.
   4  *
   5  * This software file (the "File") is distributed by Marvell International
   6  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   7  * (the "License").  You may use, redistribute and/or modify this File in
   8  * accordance with the terms and conditions of the License, a copy of which
   9  * is available on the worldwide web at
  10  * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  11  *
  12  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  13  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  14  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  15  * this warranty disclaimer.
  16  */
  17
  18 #include "main.h"
  19 #include "wmm.h"
  20 #include "11n.h"
  21 #include "11n_rxreorder.h"
  22 #include "11ac.h"
  23
  24 #define TDLS_REQ_FIX_LEN      6
  25 #define TDLS_RESP_FIX_LEN     8
  26 #define TDLS_CONFIRM_FIX_LEN  6
  27 #define MWIFIEX_TDLS_WMM_INFO_SIZE 7
  28
  29 static void mwifiex_restore_tdls_packets(struct mwifiex_private *priv,
  30                                          const u8 *mac, u8 status)
  31 {
  32         struct mwifiex_ra_list_tbl *ra_list;
  33         struct list_head *tid_list;
  34         struct sk_buff *skb, *tmp;
  35         struct mwifiex_txinfo *tx_info;
  36         unsigned long flags;
  37         u32 tid;
  38         u8 tid_down;
  39
  40         mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
  41         spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
  42
  43         skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) {
  44                 if (!ether_addr_equal(mac, skb->data))
  45                         continue;
  46
  47                 __skb_unlink(skb, &priv->tdls_txq);
  48                 tx_info = MWIFIEX_SKB_TXCB(skb);
  49                 tid = skb->priority;
  50                 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
  51
  52                 if (mwifiex_is_tdls_link_setup(status)) {
  53                         ra_list = mwifiex_wmm_get_queue_raptr(priv, tid, mac);
  54                         ra_list->tdls_link = true;
  55                         tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
  56                 } else {
  57                         tid_list = &priv->wmm.tid_tbl_ptr[tid_down].ra_list;
  58                         ra_list = list_first_entry_or_null(tid_list,
  59                                         struct mwifiex_ra_list_tbl, list);
  60                         tx_info->flags &= ~MWIFIEX_BUF_FLAG_TDLS_PKT;
  61                 }
  62
  63                 if (!ra_list) {
  64                         mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
  65                         continue;
  66                 }
  67
  68                 skb_queue_tail(&ra_list->skb_head, skb);
  69
  70                 ra_list->ba_pkt_count++;
  71                 ra_list->total_pkt_count++;
  72
  73                 if (atomic_read(&priv->wmm.highest_queued_prio) <
  74                                                        tos_to_tid_inv[tid_down])
  75                         atomic_set(&priv->wmm.highest_queued_prio,
  76                                    tos_to_tid_inv[tid_down]);
  77
  78                 atomic_inc(&priv->wmm.tx_pkts_queued);
  79         }
  80
  81         spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
  82         return;
  83 }
  84
  85 static void mwifiex_hold_tdls_packets(struct mwifiex_private *priv,
  86                                       const u8 *mac)
  87 {
  88         struct mwifiex_ra_list_tbl *ra_list;
  89         struct list_head *ra_list_head;
  90         struct sk_buff *skb, *tmp;
  91         unsigned long flags;
  92         int i;
  93
  94         mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
  95         spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
  96
  97         for (i = 0; i < MAX_NUM_TID; i++) {
  98                 if (!list_empty(&priv->wmm.tid_tbl_ptr[i].ra_list)) {
  99                         ra_list_head = &priv->wmm.tid_tbl_ptr[i].ra_list;
 100                         list_for_each_entry(ra_list, ra_list_head, list) {
 101                                 skb_queue_walk_safe(&ra_list->skb_head, skb,
 102                                                     tmp) {
 103                                         if (!ether_addr_equal(mac, skb->data))
 104                                                 continue;
 105                                         __skb_unlink(skb, &ra_list->skb_head);
 106                                         atomic_dec(&priv->wmm.tx_pkts_queued);
 107                                         ra_list->total_pkt_count--;
 108                                         skb_queue_tail(&priv->tdls_txq, skb);
 109                                 }
 110                         }
 111                 }
 112         }
 113
 114         spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
 115         return;
 116 }
 117
 118 /* This function appends rate TLV to scan config command. */
 119 static int
 120 mwifiex_tdls_append_rates_ie(struct mwifiex_private *priv,
 121                              struct sk_buff *skb)
 122 {
 123         u8 rates[MWIFIEX_SUPPORTED_RATES], *pos;
 124         u16 rates_size, supp_rates_size, ext_rates_size;
 125
 126         memset(rates, 0, sizeof(rates));
 127         rates_size = mwifiex_get_supported_rates(priv, rates);
 128
 129         supp_rates_size = min_t(u16, rates_size, MWIFIEX_TDLS_SUPPORTED_RATES);
 130
 131         if (skb_tailroom(skb) < rates_size + 4) {
 132                 mwifiex_dbg(priv->adapter, ERROR,
 133                             "Insufficient space while adding rates\n");
 134                 return -ENOMEM;
 135         }
 136
 137         pos = skb_put(skb, supp_rates_size + 2);
 138         *pos++ = WLAN_EID_SUPP_RATES;
 139         *pos++ = supp_rates_size;
 140         memcpy(pos, rates, supp_rates_size);
 141
 142         if (rates_size > MWIFIEX_TDLS_SUPPORTED_RATES) {
 143                 ext_rates_size = rates_size - MWIFIEX_TDLS_SUPPORTED_RATES;
 144                 pos = skb_put(skb, ext_rates_size + 2);
 145                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
 146                 *pos++ = ext_rates_size;
 147                 memcpy(pos, rates + MWIFIEX_TDLS_SUPPORTED_RATES,
 148                        ext_rates_size);
 149         }
 150
 151         return 0;
 152 }
 153
 154 static void mwifiex_tdls_add_aid(struct mwifiex_private *priv,
 155                                 struct sk_buff *skb)
 156 {
 157         struct ieee_types_assoc_rsp *assoc_rsp;
 158         u8 *pos;
 159
 160         assoc_rsp = (struct ieee_types_assoc_rsp *)&priv->assoc_rsp_buf;
 161         pos = skb_put(skb, 4);
 162         *pos++ = WLAN_EID_AID;
 163         *pos++ = 2;
 164         memcpy(pos, &assoc_rsp->a_id, sizeof(assoc_rsp->a_id));
 165
 166         return;
 167 }
 168
 169 static int mwifiex_tdls_add_vht_capab(struct mwifiex_private *priv,
 170                                       struct sk_buff *skb)
 171 {
 172         struct ieee80211_vht_cap vht_cap;
 173         u8 *pos;
 174
 175         pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
 176         *pos++ = WLAN_EID_VHT_CAPABILITY;
 177         *pos++ = sizeof(struct ieee80211_vht_cap);
 178
 179         memset(&vht_cap, 0, sizeof(struct ieee80211_vht_cap));
 180
 181         mwifiex_fill_vht_cap_tlv(priv, &vht_cap, priv->curr_bss_params.band);
 182         memcpy(pos, &vht_cap, sizeof(vht_cap));
 183
 184         return 0;
 185 }
 186
 187 static int
 188 mwifiex_tdls_add_ht_oper(struct mwifiex_private *priv, const u8 *mac,
 189                          u8 vht_enabled, struct sk_buff *skb)
 190 {
 191         struct ieee80211_ht_operation *ht_oper;
 192         struct mwifiex_sta_node *sta_ptr;
 193         struct mwifiex_bssdescriptor *bss_desc =
 194                                         &priv->curr_bss_params.bss_descriptor;
 195         u8 *pos;
 196
 197         sta_ptr = mwifiex_get_sta_entry(priv, mac);
 198         if (unlikely(!sta_ptr)) {
 199                 mwifiex_dbg(priv->adapter, ERROR,
 200                             "TDLS peer station not found in list\n");
 201                 return -1;
 202         }
 203
 204         if (!(le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info))) {
 205                 mwifiex_dbg(priv->adapter, WARN,
 206                             "TDLS peer doesn't support ht capabilities\n");
 207                 return 0;
 208         }
 209
 210         pos = skb_put(skb, sizeof(struct ieee80211_ht_operation) + 2);
 211         *pos++ = WLAN_EID_HT_OPERATION;
 212         *pos++ = sizeof(struct ieee80211_ht_operation);
 213         ht_oper = (void *)pos;
 214
 215         ht_oper->primary_chan = bss_desc->channel;
 216
 217         /* follow AP's channel bandwidth */
 218         if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&
 219             bss_desc->bcn_ht_cap &&
 220             ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))
 221                 ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param;
 222
 223         if (vht_enabled) {
 224                 ht_oper->ht_param =
 225                           mwifiex_get_sec_chan_offset(bss_desc->channel);
 226                 ht_oper->ht_param |= BIT(2);
 227         }
 228
 229         memcpy(&sta_ptr->tdls_cap.ht_oper, ht_oper,
 230                sizeof(struct ieee80211_ht_operation));
 231
 232         return 0;
 233 }
 234
 235 static int mwifiex_tdls_add_vht_oper(struct mwifiex_private *priv,
 236                                      const u8 *mac, struct sk_buff *skb)
 237 {
 238         struct mwifiex_bssdescriptor *bss_desc;
 239         struct ieee80211_vht_operation *vht_oper;
 240         struct ieee80211_vht_cap *vht_cap, *ap_vht_cap = NULL;
 241         struct mwifiex_sta_node *sta_ptr;
 242         struct mwifiex_adapter *adapter = priv->adapter;
 243         u8 supp_chwd_set, peer_supp_chwd_set;
 244         u8 *pos, ap_supp_chwd_set, chan_bw;
 245         u16 mcs_map_user, mcs_map_resp, mcs_map_result;
 246         u16 mcs_user, mcs_resp, nss;
 247         u32 usr_vht_cap_info;
 248
 249         bss_desc = &priv->curr_bss_params.bss_descriptor;
 250
 251         sta_ptr = mwifiex_get_sta_entry(priv, mac);
 252         if (unlikely(!sta_ptr)) {
 253                 mwifiex_dbg(adapter, ERROR,
 254                             "TDLS peer station not found in list\n");
 255                 return -1;
 256         }
 257
 258         if (!(le32_to_cpu(sta_ptr->tdls_cap.vhtcap.vht_cap_info))) {
 259                 mwifiex_dbg(adapter, WARN,
 260                             "TDLS peer doesn't support vht capabilities\n");
 261                 return 0;
 262         }
 263
 264         if (!mwifiex_is_bss_in_11ac_mode(priv)) {
 265                 if (sta_ptr->tdls_cap.extcap.ext_capab[7] &
 266                    WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
 267                         mwifiex_dbg(adapter, WARN,
 268                                     "TDLS peer doesn't support wider bandwidth\n");
 269                         return 0;
 270                 }
 271         } else {
 272                 ap_vht_cap = bss_desc->bcn_vht_cap;
 273         }
 274
 275         pos = skb_put(skb, sizeof(struct ieee80211_vht_operation) + 2);
 276         *pos++ = WLAN_EID_VHT_OPERATION;
 277         *pos++ = sizeof(struct ieee80211_vht_operation);
 278         vht_oper = (struct ieee80211_vht_operation *)pos;
 279
 280         if (bss_desc->bss_band & BAND_A)
 281                 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
 282         else
 283                 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
 284
 285         /* find the minimum bandwidth between AP/TDLS peers */
 286         vht_cap = &sta_ptr->tdls_cap.vhtcap;
 287         supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info);
 288         peer_supp_chwd_set =
 289                          GET_VHTCAP_CHWDSET(le32_to_cpu(vht_cap->vht_cap_info));
 290         supp_chwd_set = min_t(u8, supp_chwd_set, peer_supp_chwd_set);
 291
 292         /* We need check AP's bandwidth when TDLS_WIDER_BANDWIDTH is off */
 293
 294         if (ap_vht_cap && sta_ptr->tdls_cap.extcap.ext_capab[7] &
 295             WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
 296                 ap_supp_chwd_set =
 297                       GET_VHTCAP_CHWDSET(le32_to_cpu(ap_vht_cap->vht_cap_info));
 298                 supp_chwd_set = min_t(u8, supp_chwd_set, ap_supp_chwd_set);
 299         }
 300
 301         switch (supp_chwd_set) {
 302         case IEEE80211_VHT_CHANWIDTH_80MHZ:
 303                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
 304                 break;
 305         case IEEE80211_VHT_CHANWIDTH_160MHZ:
 306                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ;
 307                 break;
 308         case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
 309                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
 310                 break;
 311         default:
 312                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
 313                 break;
 314         }
 315
 316         mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support);
 317         mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map);
 318         mcs_map_result = 0;
 319
 320         for (nss = 1; nss <= 8; nss++) {
 321                 mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
 322                 mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
 323
 324                 if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) ||
 325                     (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED))
 326                         SET_VHTNSSMCS(mcs_map_result, nss,
 327                                       IEEE80211_VHT_MCS_NOT_SUPPORTED);
 328                 else
 329                         SET_VHTNSSMCS(mcs_map_result, nss,
 330                                       min_t(u16, mcs_user, mcs_resp));
 331         }
 332
 333         vht_oper->basic_mcs_set = cpu_to_le16(mcs_map_result);
 334
 335         switch (vht_oper->chan_width) {
 336         case IEEE80211_VHT_CHANWIDTH_80MHZ:
 337                 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
 338                 break;
 339         case IEEE80211_VHT_CHANWIDTH_160MHZ:
 340                 chan_bw = IEEE80211_VHT_CHANWIDTH_160MHZ;
 341                 break;
 342         case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
 343                 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
 344                 break;
 345         default:
 346                 chan_bw = IEEE80211_VHT_CHANWIDTH_USE_HT;
 347                 break;
 348         }
 349         vht_oper->center_freq_seg0_idx =
 350                         mwifiex_get_center_freq_index(priv, BAND_AAC,
 351                                                       bss_desc->channel,
 352                                                       chan_bw);
 353
 354         return 0;
 355 }
 356
 357 static void mwifiex_tdls_add_ext_capab(struct mwifiex_private *priv,
 358                                        struct sk_buff *skb)
 359 {
 360         struct ieee_types_extcap *extcap;
 361
 362         extcap = skb_put(skb, sizeof(struct ieee_types_extcap));
 363         extcap->ieee_hdr.element_id = WLAN_EID_EXT_CAPABILITY;
 364         extcap->ieee_hdr.len = 8;
 365         memset(extcap->ext_capab, 0, 8);
 366         extcap->ext_capab[4] |= WLAN_EXT_CAPA5_TDLS_ENABLED;
 367         extcap->ext_capab[3] |= WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH;
 368
 369         if (priv->adapter->is_hw_11ac_capable)
 370                 extcap->ext_capab[7] |= WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED;
 371 }
 372
 373 static void mwifiex_tdls_add_qos_capab(struct sk_buff *skb)
 374 {
 375         u8 *pos = skb_put(skb, 3);
 376
 377         *pos++ = WLAN_EID_QOS_CAPA;
 378         *pos++ = 1;
 379         *pos++ = MWIFIEX_TDLS_DEF_QOS_CAPAB;
 380 }
 381
 382 static void
 383 mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private *priv, struct sk_buff *skb)
 384 {
 385         struct ieee80211_wmm_param_ie *wmm;
 386         u8 ac_vi[] = {0x42, 0x43, 0x5e, 0x00};
 387         u8 ac_vo[] = {0x62, 0x32, 0x2f, 0x00};
 388         u8 ac_be[] = {0x03, 0xa4, 0x00, 0x00};
 389         u8 ac_bk[] = {0x27, 0xa4, 0x00, 0x00};
 390
 391         wmm = skb_put_zero(skb, sizeof(*wmm));
 392
 393         wmm->element_id = WLAN_EID_VENDOR_SPECIFIC;
 394         wmm->len = sizeof(*wmm) - 2;
 395         wmm->oui[0] = 0x00; /* Microsoft OUI 00:50:F2 */
 396         wmm->oui[1] = 0x50;
 397         wmm->oui[2] = 0xf2;
 398         wmm->oui_type = 2; /* WME */
 399         wmm->oui_subtype = 1; /* WME param */
 400         wmm->version = 1; /* WME ver */
 401         wmm->qos_info = 0; /* U-APSD not in use */
 402
 403         /* use default WMM AC parameters for TDLS link*/
 404         memcpy(&wmm->ac[0], ac_be, sizeof(ac_be));
 405         memcpy(&wmm->ac[1], ac_bk, sizeof(ac_bk));
 406         memcpy(&wmm->ac[2], ac_vi, sizeof(ac_vi));
 407         memcpy(&wmm->ac[3], ac_vo, sizeof(ac_vo));
 408 }
 409
 410 static void
 411 mwifiex_add_wmm_info_ie(struct mwifiex_private *priv, struct sk_buff *skb,
 412                         u8 qosinfo)
 413 {
 414         u8 *buf;
 415
 416         buf = skb_put(skb,
 417                       MWIFIEX_TDLS_WMM_INFO_SIZE + sizeof(struct ieee_types_header));
 418
 419         *buf++ = WLAN_EID_VENDOR_SPECIFIC;
 420         *buf++ = 7; /* len */
 421         *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
 422         *buf++ = 0x50;
 423         *buf++ = 0xf2;
 424         *buf++ = 2; /* WME */
 425         *buf++ = 0; /* WME info */
 426         *buf++ = 1; /* WME ver */
 427         *buf++ = qosinfo; /* U-APSD no in use */
 428 }
 429
 430 static void mwifiex_tdls_add_bss_co_2040(struct sk_buff *skb)
 431 {
 432         struct ieee_types_bss_co_2040 *bssco;
 433
 434         bssco = skb_put(skb, sizeof(struct ieee_types_bss_co_2040));
 435         bssco->ieee_hdr.element_id = WLAN_EID_BSS_COEX_2040;
 436         bssco->ieee_hdr.len = sizeof(struct ieee_types_bss_co_2040) -
 437                               sizeof(struct ieee_types_header);
 438         bssco->bss_2040co = 0x01;
 439 }
 440
 441 static void mwifiex_tdls_add_supported_chan(struct sk_buff *skb)
 442 {
 443         struct ieee_types_generic *supp_chan;
 444         u8 chan_supp[] = {1, 11};
 445
 446         supp_chan = skb_put(skb,
 447                             (sizeof(struct ieee_types_header) + sizeof(chan_supp)));
 448         supp_chan->ieee_hdr.element_id = WLAN_EID_SUPPORTED_CHANNELS;
 449         supp_chan->ieee_hdr.len = sizeof(chan_supp);
 450         memcpy(supp_chan->data, chan_supp, sizeof(chan_supp));
 451 }
 452
 453 static void mwifiex_tdls_add_oper_class(struct sk_buff *skb)
 454 {
 455         struct ieee_types_generic *reg_class;
 456         u8 rc_list[] = {1,
 457                 1, 2, 3, 4, 12, 22, 23, 24, 25, 27, 28, 29, 30, 32, 33};
 458         reg_class = skb_put(skb,
 459                             (sizeof(struct ieee_types_header) + sizeof(rc_list)));
 460         reg_class->ieee_hdr.element_id = WLAN_EID_SUPPORTED_REGULATORY_CLASSES;
 461         reg_class->ieee_hdr.len = sizeof(rc_list);
 462         memcpy(reg_class->data, rc_list, sizeof(rc_list));
 463 }
 464
 465 static int mwifiex_prep_tdls_encap_data(struct mwifiex_private *priv,
 466                                         const u8 *peer, u8 action_code,
 467                                         u8 dialog_token,
 468                                         u16 status_code, struct sk_buff *skb)
 469 {
 470         struct ieee80211_tdls_data *tf;
 471         int ret;
 472         u16 capab;
 473         struct ieee80211_ht_cap *ht_cap;
 474         u8 radio, *pos;
 475
 476         capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
 477
 478         tf = skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
 479         memcpy(tf->da, peer, ETH_ALEN);
 480         memcpy(tf->sa, priv->curr_addr, ETH_ALEN);
 481         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
 482         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
 483
 484         switch (action_code) {
 485         case WLAN_TDLS_SETUP_REQUEST:
 486                 tf->category = WLAN_CATEGORY_TDLS;
 487                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
 488                 skb_put(skb, sizeof(tf->u.setup_req));
 489                 tf->u.setup_req.dialog_token = dialog_token;
 490                 tf->u.setup_req.capability = cpu_to_le16(capab);
 491                 ret = mwifiex_tdls_append_rates_ie(priv, skb);
 492                 if (ret) {
 493                         dev_kfree_skb_any(skb);
 494                         return ret;
 495                 }
 496
 497                 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
 498                 *pos++ = WLAN_EID_HT_CAPABILITY;
 499                 *pos++ = sizeof(struct ieee80211_ht_cap);
 500                 ht_cap = (void *)pos;
 501                 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 502                 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
 503                 if (ret) {
 504                         dev_kfree_skb_any(skb);
 505                         return ret;
 506                 }
 507
 508                 if (priv->adapter->is_hw_11ac_capable) {
 509                         ret = mwifiex_tdls_add_vht_capab(priv, skb);
 510                         if (ret) {
 511                                 dev_kfree_skb_any(skb);
 512                                 return ret;
 513                         }
 514                         mwifiex_tdls_add_aid(priv, skb);
 515                 }
 516
 517                 mwifiex_tdls_add_ext_capab(priv, skb);
 518                 mwifiex_tdls_add_bss_co_2040(skb);
 519                 mwifiex_tdls_add_supported_chan(skb);
 520                 mwifiex_tdls_add_oper_class(skb);
 521                 mwifiex_add_wmm_info_ie(priv, skb, 0);
 522                 break;
 523
 524         case WLAN_TDLS_SETUP_RESPONSE:
 525                 tf->category = WLAN_CATEGORY_TDLS;
 526                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
 527                 skb_put(skb, sizeof(tf->u.setup_resp));
 528                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
 529                 tf->u.setup_resp.dialog_token = dialog_token;
 530                 tf->u.setup_resp.capability = cpu_to_le16(capab);
 531                 ret = mwifiex_tdls_append_rates_ie(priv, skb);
 532                 if (ret) {
 533                         dev_kfree_skb_any(skb);
 534                         return ret;
 535                 }
 536
 537                 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
 538                 *pos++ = WLAN_EID_HT_CAPABILITY;
 539                 *pos++ = sizeof(struct ieee80211_ht_cap);
 540                 ht_cap = (void *)pos;
 541                 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 542                 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
 543                 if (ret) {
 544                         dev_kfree_skb_any(skb);
 545                         return ret;
 546                 }
 547
 548                 if (priv->adapter->is_hw_11ac_capable) {
 549                         ret = mwifiex_tdls_add_vht_capab(priv, skb);
 550                         if (ret) {
 551                                 dev_kfree_skb_any(skb);
 552                                 return ret;
 553                         }
 554                         mwifiex_tdls_add_aid(priv, skb);
 555                 }
 556
 557                 mwifiex_tdls_add_ext_capab(priv, skb);
 558                 mwifiex_tdls_add_bss_co_2040(skb);
 559                 mwifiex_tdls_add_supported_chan(skb);
 560                 mwifiex_tdls_add_oper_class(skb);
 561                 mwifiex_add_wmm_info_ie(priv, skb, 0);
 562                 break;
 563
 564         case WLAN_TDLS_SETUP_CONFIRM:
 565                 tf->category = WLAN_CATEGORY_TDLS;
 566                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
 567                 skb_put(skb, sizeof(tf->u.setup_cfm));
 568                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
 569                 tf->u.setup_cfm.dialog_token = dialog_token;
 570
 571                 mwifiex_tdls_add_wmm_param_ie(priv, skb);
 572                 if (priv->adapter->is_hw_11ac_capable) {
 573                         ret = mwifiex_tdls_add_vht_oper(priv, peer, skb);
 574                         if (ret) {
 575                                 dev_kfree_skb_any(skb);
 576                                 return ret;
 577                         }
 578                         ret = mwifiex_tdls_add_ht_oper(priv, peer, 1, skb);
 579                         if (ret) {
 580                                 dev_kfree_skb_any(skb);
 581                                 return ret;
 582                         }
 583                 } else {
 584                         ret = mwifiex_tdls_add_ht_oper(priv, peer, 0, skb);
 585                         if (ret) {
 586                                 dev_kfree_skb_any(skb);
 587                                 return ret;
 588                         }
 589                 }
 590                 break;
 591
 592         case WLAN_TDLS_TEARDOWN:
 593                 tf->category = WLAN_CATEGORY_TDLS;
 594                 tf->action_code = WLAN_TDLS_TEARDOWN;
 595                 skb_put(skb, sizeof(tf->u.teardown));
 596                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
 597                 break;
 598
 599         case WLAN_TDLS_DISCOVERY_REQUEST:
 600                 tf->category = WLAN_CATEGORY_TDLS;
 601                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
 602                 skb_put(skb, sizeof(tf->u.discover_req));
 603                 tf->u.discover_req.dialog_token = dialog_token;
 604                 break;
 605         default:
 606                 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
 607                 return -EINVAL;
 608         }
 609
 610         return 0;
 611 }
 612
 613 static void
 614 mwifiex_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr,
 615                          const u8 *peer, const u8 *bssid)
 616 {
 617         struct ieee80211_tdls_lnkie *lnkid;
 618
 619         lnkid = skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
 620         lnkid->ie_type = WLAN_EID_LINK_ID;
 621         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) -
 622                         sizeof(struct ieee_types_header);
 623
 624         memcpy(lnkid->bssid, bssid, ETH_ALEN);
 625         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
 626         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
 627 }
 628
 629 int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, const u8 *peer,
 630                                  u8 action_code, u8 dialog_token,
 631                                  u16 status_code, const u8 *extra_ies,
 632                                  size_t extra_ies_len)
 633 {
 634         struct sk_buff *skb;
 635         struct mwifiex_txinfo *tx_info;
 636         int ret;
 637         u16 skb_len;
 638
 639         skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
 640                   max(sizeof(struct ieee80211_mgmt),
 641                       sizeof(struct ieee80211_tdls_data)) +
 642                   MWIFIEX_MGMT_FRAME_HEADER_SIZE +
 643                   MWIFIEX_SUPPORTED_RATES +
 644                   3 + /* Qos Info */
 645                   sizeof(struct ieee_types_extcap) +
 646                   sizeof(struct ieee80211_ht_cap) +
 647                   sizeof(struct ieee_types_bss_co_2040) +
 648                   sizeof(struct ieee80211_ht_operation) +
 649                   sizeof(struct ieee80211_tdls_lnkie) +
 650                   (2 * (sizeof(struct ieee_types_header))) +
 651                    MWIFIEX_SUPPORTED_CHANNELS +
 652                    MWIFIEX_OPERATING_CLASSES +
 653                   sizeof(struct ieee80211_wmm_param_ie) +
 654                   extra_ies_len;
 655
 656         if (priv->adapter->is_hw_11ac_capable)
 657                 skb_len += sizeof(struct ieee_types_vht_cap) +
 658                            sizeof(struct ieee_types_vht_oper) +
 659                            sizeof(struct ieee_types_aid);
 660
 661         skb = dev_alloc_skb(skb_len);
 662         if (!skb) {
 663                 mwifiex_dbg(priv->adapter, ERROR,
 664                             "allocate skb failed for management frame\n");
 665                 return -ENOMEM;
 666         }
 667         skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
 668
 669         switch (action_code) {
 670         case WLAN_TDLS_SETUP_REQUEST:
 671         case WLAN_TDLS_SETUP_CONFIRM:
 672         case WLAN_TDLS_TEARDOWN:
 673         case WLAN_TDLS_DISCOVERY_REQUEST:
 674                 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
 675                                                    dialog_token, status_code,
 676                                                    skb);
 677                 if (ret) {
 678                         dev_kfree_skb_any(skb);
 679                         return ret;
 680                 }
 681                 if (extra_ies_len)
 682                         skb_put_data(skb, extra_ies, extra_ies_len);
 683                 mwifiex_tdls_add_link_ie(skb, priv->curr_addr, peer,
 684                                          priv->cfg_bssid);
 685                 break;
 686         case WLAN_TDLS_SETUP_RESPONSE:
 687                 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
 688                                                    dialog_token, status_code,
 689                                                    skb);
 690                 if (ret) {
 691                         dev_kfree_skb_any(skb);
 692                         return ret;
 693                 }
 694                 if (extra_ies_len)
 695                         skb_put_data(skb, extra_ies, extra_ies_len);
 696                 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
 697                                          priv->cfg_bssid);
 698                 break;
 699         }
 700
 701         switch (action_code) {
 702         case WLAN_TDLS_SETUP_REQUEST:
 703         case WLAN_TDLS_SETUP_RESPONSE:
 704                 skb->priority = MWIFIEX_PRIO_BK;
 705                 break;
 706         default:
 707                 skb->priority = MWIFIEX_PRIO_VI;
 708                 break;
 709         }
 710
 711         tx_info = MWIFIEX_SKB_TXCB(skb);
 712         memset(tx_info, 0, sizeof(*tx_info));
 713         tx_info->bss_num = priv->bss_num;
 714         tx_info->bss_type = priv->bss_type;
 715
 716         __net_timestamp(skb);
 717         mwifiex_queue_tx_pkt(priv, skb);
 718
 719         /* Delay 10ms to make sure tdls setup confirm/teardown frame
 720          * is received by peer
 721         */
 722         if (action_code == WLAN_TDLS_SETUP_CONFIRM ||
 723             action_code == WLAN_TDLS_TEARDOWN)
 724                 msleep_interruptible(10);
 725
 726         return 0;
 727 }
 728
 729 static int
 730 mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv,
 731                                     const u8 *peer,
 732                                     u8 action_code, u8 dialog_token,
 733                                     u16 status_code, struct sk_buff *skb)
 734 {
 735         struct ieee80211_mgmt *mgmt;
 736         u8 bc_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 737         int ret;
 738         u16 capab;
 739         struct ieee80211_ht_cap *ht_cap;
 740         u8 radio, *pos;
 741
 742         capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
 743
 744         mgmt = skb_put(skb, offsetof(struct ieee80211_mgmt, u));
 745
 746         memset(mgmt, 0, 24);
 747         memcpy(mgmt->da, peer, ETH_ALEN);
 748         memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN);
 749         memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);
 750         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 751                                           IEEE80211_STYPE_ACTION);
 752
 753         /* add address 4 */
 754         pos = skb_put(skb, ETH_ALEN);
 755
 756         switch (action_code) {
 757         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
 758                 skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1);
 759                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
 760                 mgmt->u.action.u.tdls_discover_resp.action_code =
 761                                               WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
 762                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
 763                                                                    dialog_token;
 764                 mgmt->u.action.u.tdls_discover_resp.capability =
 765                                                              cpu_to_le16(capab);
 766                 /* move back for addr4 */
 767                 memmove(pos + ETH_ALEN, &mgmt->u.action.category,
 768                         sizeof(mgmt->u.action.u.tdls_discover_resp));
 769                 /* init address 4 */
 770                 memcpy(pos, bc_addr, ETH_ALEN);
 771
 772                 ret = mwifiex_tdls_append_rates_ie(priv, skb);
 773                 if (ret) {
 774                         dev_kfree_skb_any(skb);
 775                         return ret;
 776                 }
 777
 778                 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
 779                 *pos++ = WLAN_EID_HT_CAPABILITY;
 780                 *pos++ = sizeof(struct ieee80211_ht_cap);
 781                 ht_cap = (void *)pos;
 782                 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 783                 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
 784                 if (ret) {
 785                         dev_kfree_skb_any(skb);
 786                         return ret;
 787                 }
 788
 789                 if (priv->adapter->is_hw_11ac_capable) {
 790                         ret = mwifiex_tdls_add_vht_capab(priv, skb);
 791                         if (ret) {
 792                                 dev_kfree_skb_any(skb);
 793                                 return ret;
 794                         }
 795                         mwifiex_tdls_add_aid(priv, skb);
 796                 }
 797
 798                 mwifiex_tdls_add_ext_capab(priv, skb);
 799                 mwifiex_tdls_add_bss_co_2040(skb);
 800                 mwifiex_tdls_add_supported_chan(skb);
 801                 mwifiex_tdls_add_qos_capab(skb);
 802                 mwifiex_tdls_add_oper_class(skb);
 803                 break;
 804         default:
 805                 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS action frame type\n");
 806                 return -EINVAL;
 807         }
 808
 809         return 0;
 810 }
 811
 812 int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer,
 813                                    u8 action_code, u8 dialog_token,
 814                                    u16 status_code, const u8 *extra_ies,
 815                                    size_t extra_ies_len)
 816 {
 817         struct sk_buff *skb;
 818         struct mwifiex_txinfo *tx_info;
 819         u8 *pos;
 820         u32 pkt_type, tx_control;
 821         u16 pkt_len, skb_len;
 822
 823         skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
 824                   max(sizeof(struct ieee80211_mgmt),
 825                       sizeof(struct ieee80211_tdls_data)) +
 826                   MWIFIEX_MGMT_FRAME_HEADER_SIZE +
 827                   MWIFIEX_SUPPORTED_RATES +
 828                   sizeof(struct ieee_types_extcap) +
 829                   sizeof(struct ieee80211_ht_cap) +
 830                   sizeof(struct ieee_types_bss_co_2040) +
 831                   sizeof(struct ieee80211_ht_operation) +
 832                   sizeof(struct ieee80211_tdls_lnkie) +
 833                   extra_ies_len +
 834                   3 + /* Qos Info */
 835                   ETH_ALEN; /* Address4 */
 836
 837         if (priv->adapter->is_hw_11ac_capable)
 838                 skb_len += sizeof(struct ieee_types_vht_cap) +
 839                            sizeof(struct ieee_types_vht_oper) +
 840                            sizeof(struct ieee_types_aid);
 841
 842         skb = dev_alloc_skb(skb_len);
 843         if (!skb) {
 844                 mwifiex_dbg(priv->adapter, ERROR,
 845                             "allocate skb failed for management frame\n");
 846                 return -ENOMEM;
 847         }
 848
 849         skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
 850
 851         pkt_type = PKT_TYPE_MGMT;
 852         tx_control = 0;
 853         pos = skb_put_zero(skb,
 854                            MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
 855         memcpy(pos, &pkt_type, sizeof(pkt_type));
 856         memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control));
 857
 858         if (mwifiex_construct_tdls_action_frame(priv, peer, action_code,
 859                                                 dialog_token, status_code,
 860                                                 skb)) {
 861                 dev_kfree_skb_any(skb);
 862                 return -EINVAL;
 863         }
 864
 865         if (extra_ies_len)
 866                 skb_put_data(skb, extra_ies, extra_ies_len);
 867
 868         /* the TDLS link IE is always added last we are the responder */
 869
 870         mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
 871                                  priv->cfg_bssid);
 872
 873         skb->priority = MWIFIEX_PRIO_VI;
 874
 875         tx_info = MWIFIEX_SKB_TXCB(skb);
 876         memset(tx_info, 0, sizeof(*tx_info));
 877         tx_info->bss_num = priv->bss_num;
 878         tx_info->bss_type = priv->bss_type;
 879         tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
 880
 881         pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len);
 882         memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len,
 883                sizeof(pkt_len));
 884         __net_timestamp(skb);
 885         mwifiex_queue_tx_pkt(priv, skb);
 886
 887         return 0;
 888 }
 889
 890 /* This function process tdls action frame from peer.
 891  * Peer capabilities are stored into station node structure.
 892  */
 893 void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
 894                                        u8 *buf, int len)
 895 {
 896         struct mwifiex_sta_node *sta_ptr;
 897         u8 *peer, *pos, *end;
 898         u8 i, action, basic;
 899         u16 cap = 0;
 900         int ies_len = 0;
 901
 902         if (len < (sizeof(struct ethhdr) + 3))
 903                 return;
 904         if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE)
 905                 return;
 906         if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS)
 907                 return;
 908
 909         peer = buf + ETH_ALEN;
 910         action = *(buf + sizeof(struct ethhdr) + 2);
 911         mwifiex_dbg(priv->adapter, DATA,
 912                     "rx:tdls action: peer=%pM, action=%d\n", peer, action);
 913
 914         switch (action) {
 915         case WLAN_TDLS_SETUP_REQUEST:
 916                 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
 917                         return;
 918
 919                 pos = buf + sizeof(struct ethhdr) + 4;
 920                 /* payload 1+ category 1 + action 1 + dialog 1 */
 921                 cap = get_unaligned_le16(pos);
 922                 ies_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN;
 923                 pos += 2;
 924                 break;
 925
 926         case WLAN_TDLS_SETUP_RESPONSE:
 927                 if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN))
 928                         return;
 929                 /* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/
 930                 pos = buf + sizeof(struct ethhdr) + 6;
 931                 cap = get_unaligned_le16(pos);
 932                 ies_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN;
 933                 pos += 2;
 934                 break;
 935
 936         case WLAN_TDLS_SETUP_CONFIRM:
 937                 if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN))
 938                         return;
 939                 pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN;
 940                 ies_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN;
 941                 break;
 942         default:
 943                 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
 944                 return;
 945         }
 946
 947         sta_ptr = mwifiex_add_sta_entry(priv, peer);
 948         if (!sta_ptr)
 949                 return;
 950
 951         sta_ptr->tdls_cap.capab = cpu_to_le16(cap);
 952
 953         for (end = pos + ies_len; pos + 1 < end; pos += 2 + pos[1]) {
 954                 u8 ie_len = pos[1];
 955
 956                 if (pos + 2 + ie_len > end)
 957                         break;
 958
 959                 switch (*pos) {
 960                 case WLAN_EID_SUPP_RATES:
 961                         if (ie_len > sizeof(sta_ptr->tdls_cap.rates))
 962                                 return;
 963                         sta_ptr->tdls_cap.rates_len = ie_len;
 964                         for (i = 0; i < ie_len; i++)
 965                                 sta_ptr->tdls_cap.rates[i] = pos[i + 2];
 966                         break;
 967
 968                 case WLAN_EID_EXT_SUPP_RATES:
 969                         if (ie_len > sizeof(sta_ptr->tdls_cap.rates))
 970                                 return;
 971                         basic = sta_ptr->tdls_cap.rates_len;
 972                         if (ie_len > sizeof(sta_ptr->tdls_cap.rates) - basic)
 973                                 return;
 974                         for (i = 0; i < ie_len; i++)
 975                                 sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
 976                         sta_ptr->tdls_cap.rates_len += ie_len;
 977                         break;
 978                 case WLAN_EID_HT_CAPABILITY:
 979                         if (ie_len != sizeof(struct ieee80211_ht_cap))
 980                                 return;
 981                         /* copy the ie's value into ht_capb*/
 982                         memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos + 2,
 983                                sizeof(struct ieee80211_ht_cap));
 984                         sta_ptr->is_11n_enabled = 1;
 985                         break;
 986                 case WLAN_EID_HT_OPERATION:
 987                         if (ie_len != sizeof(struct ieee80211_ht_operation))
 988                                 return;
 989                         /* copy the ie's value into ht_oper*/
 990                         memcpy(&sta_ptr->tdls_cap.ht_oper, pos + 2,
 991                                sizeof(struct ieee80211_ht_operation));
 992                         break;
 993                 case WLAN_EID_BSS_COEX_2040:
 994                         if (ie_len != sizeof(pos[2]))
 995                                 return;
 996                         sta_ptr->tdls_cap.coex_2040 = pos[2];
 997                         break;
 998                 case WLAN_EID_EXT_CAPABILITY:
 999                         if (ie_len < sizeof(struct ieee_types_header))
1000                                 return;
1001                         if (ie_len > 8)
1002                                 return;
1003                         memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
1004                                sizeof(struct ieee_types_header) +
1005                                min_t(u8, ie_len, 8));
1006                         break;
1007                 case WLAN_EID_RSN:
1008                         if (ie_len < sizeof(struct ieee_types_header))
1009                                 return;
1010                         if (ie_len > IEEE_MAX_IE_SIZE -
1011                             sizeof(struct ieee_types_header))
1012                                 return;
1013                         memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
1014                                sizeof(struct ieee_types_header) +
1015                                min_t(u8, ie_len, IEEE_MAX_IE_SIZE -
1016                                      sizeof(struct ieee_types_header)));
1017                         break;
1018                 case WLAN_EID_QOS_CAPA:
1019                         if (ie_len != sizeof(pos[2]))
1020                                 return;
1021                         sta_ptr->tdls_cap.qos_info = pos[2];
1022                         break;
1023                 case WLAN_EID_VHT_OPERATION:
1024                         if (priv->adapter->is_hw_11ac_capable) {
1025                                 if (ie_len !=
1026                                     sizeof(struct ieee80211_vht_operation))
1027                                         return;
1028                                 /* copy the ie's value into vhtoper*/
1029                                 memcpy(&sta_ptr->tdls_cap.vhtoper, pos + 2,
1030                                        sizeof(struct ieee80211_vht_operation));
1031                         }
1032                         break;
1033                 case WLAN_EID_VHT_CAPABILITY:
1034                         if (priv->adapter->is_hw_11ac_capable) {
1035                                 if (ie_len != sizeof(struct ieee80211_vht_cap))
1036                                         return;
1037                                 /* copy the ie's value into vhtcap*/
1038                                 memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos + 2,
1039                                        sizeof(struct ieee80211_vht_cap));
1040                                 sta_ptr->is_11ac_enabled = 1;
1041                         }
1042                         break;
1043                 case WLAN_EID_AID:
1044                         if (priv->adapter->is_hw_11ac_capable) {
1045                                 if (ie_len != sizeof(u16))
1046                                         return;
1047                                 sta_ptr->tdls_cap.aid =
1048                                         get_unaligned_le16((pos + 2));
1049                         }
1050                         break;
1051                 default:
1052                         break;
1053                 }
1054         }
1055
1056         return;
1057 }
1058
1059 static int
1060 mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer)
1061 {
1062         struct mwifiex_sta_node *sta_ptr;
1063         struct mwifiex_ds_tdls_oper tdls_oper;
1064
1065         memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1066         sta_ptr = mwifiex_get_sta_entry(priv, peer);
1067
1068         if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) {
1069                 mwifiex_dbg(priv->adapter, ERROR,
1070                             "link absent for peer %pM; cannot config\n", peer);
1071                 return -EINVAL;
1072         }
1073
1074         memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1075         tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK;
1076         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1077                                 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1078 }
1079
1080 static int
1081 mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer)
1082 {
1083         struct mwifiex_sta_node *sta_ptr;
1084         struct mwifiex_ds_tdls_oper tdls_oper;
1085
1086         memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1087         sta_ptr = mwifiex_get_sta_entry(priv, peer);
1088
1089         if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) {
1090                 mwifiex_dbg(priv->adapter, WARN,
1091                             "Setup already in progress for peer %pM\n", peer);
1092                 return 0;
1093         }
1094
1095         sta_ptr = mwifiex_add_sta_entry(priv, peer);
1096         if (!sta_ptr)
1097                 return -ENOMEM;
1098
1099         sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS;
1100         mwifiex_hold_tdls_packets(priv, peer);
1101         memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1102         tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK;
1103         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1104                                 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1105 }
1106
1107 static int
1108 mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer)
1109 {
1110         struct mwifiex_sta_node *sta_ptr;
1111         struct mwifiex_ds_tdls_oper tdls_oper;
1112         unsigned long flags;
1113
1114         memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1115         sta_ptr = mwifiex_get_sta_entry(priv, peer);
1116
1117         if (sta_ptr) {
1118                 if (sta_ptr->is_11n_enabled) {
1119                         mwifiex_11n_cleanup_reorder_tbl(priv);
1120                         spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1121                                           flags);
1122                         mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1123                         spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1124                                                flags);
1125                 }
1126                 mwifiex_del_sta_entry(priv, peer);
1127         }
1128
1129         mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1130         mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP);
1131         memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1132         tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1133         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1134                                 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1135 }
1136
1137 static int
1138 mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer)
1139 {
1140         struct mwifiex_sta_node *sta_ptr;
1141         struct ieee80211_mcs_info mcs;
1142         unsigned long flags;
1143         int i;
1144
1145         sta_ptr = mwifiex_get_sta_entry(priv, peer);
1146
1147         if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) {
1148                 mwifiex_dbg(priv->adapter, MSG,
1149                             "tdls: enable link %pM success\n", peer);
1150
1151                 sta_ptr->tdls_status = TDLS_SETUP_COMPLETE;
1152
1153                 mcs = sta_ptr->tdls_cap.ht_capb.mcs;
1154                 if (mcs.rx_mask[0] != 0xff)
1155                         sta_ptr->is_11n_enabled = true;
1156                 if (sta_ptr->is_11n_enabled) {
1157                         if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) &
1158                             IEEE80211_HT_CAP_MAX_AMSDU)
1159                                 sta_ptr->max_amsdu =
1160                                         MWIFIEX_TX_DATA_BUF_SIZE_8K;
1161                         else
1162                                 sta_ptr->max_amsdu =
1163                                         MWIFIEX_TX_DATA_BUF_SIZE_4K;
1164
1165                         for (i = 0; i < MAX_NUM_TID; i++)
1166                                 sta_ptr->ampdu_sta[i] =
1167                                               priv->aggr_prio_tbl[i].ampdu_user;
1168                 } else {
1169                         for (i = 0; i < MAX_NUM_TID; i++)
1170                                 sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
1171                 }
1172                 if (sta_ptr->tdls_cap.extcap.ext_capab[3] &
1173                     WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) {
1174                         mwifiex_config_tdls_enable(priv);
1175                         mwifiex_config_tdls_cs_params(priv);
1176                 }
1177
1178                 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
1179                 mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE);
1180                 mwifiex_auto_tdls_update_peer_status(priv, peer,
1181                                                      TDLS_SETUP_COMPLETE);
1182         } else {
1183                 mwifiex_dbg(priv->adapter, ERROR,
1184                             "tdls: enable link %pM failed\n", peer);
1185                 if (sta_ptr) {
1186                         mwifiex_11n_cleanup_reorder_tbl(priv);
1187                         spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1188                                           flags);
1189                         mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1190                         spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1191                                                flags);
1192                         mwifiex_del_sta_entry(priv, peer);
1193                 }
1194                 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1195                 mwifiex_auto_tdls_update_peer_status(priv, peer,
1196                                                      TDLS_NOT_SETUP);
1197
1198                 return -1;
1199         }
1200
1201         return 0;
1202 }
1203
1204 int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action)
1205 {
1206         switch (action) {
1207         case MWIFIEX_TDLS_ENABLE_LINK:
1208                 return mwifiex_tdls_process_enable_link(priv, peer);
1209         case MWIFIEX_TDLS_DISABLE_LINK:
1210                 return mwifiex_tdls_process_disable_link(priv, peer);
1211         case MWIFIEX_TDLS_CREATE_LINK:
1212                 return mwifiex_tdls_process_create_link(priv, peer);
1213         case MWIFIEX_TDLS_CONFIG_LINK:
1214                 return mwifiex_tdls_process_config_link(priv, peer);
1215         }
1216         return 0;
1217 }
1218
1219 int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac)
1220 {
1221         struct mwifiex_sta_node *sta_ptr;
1222
1223         sta_ptr = mwifiex_get_sta_entry(priv, mac);
1224         if (sta_ptr)
1225                 return sta_ptr->tdls_status;
1226
1227         return TDLS_NOT_SETUP;
1228 }
1229
1230 int mwifiex_get_tdls_list(struct mwifiex_private *priv,
1231                           struct tdls_peer_info *buf)
1232 {
1233         struct mwifiex_sta_node *sta_ptr;
1234         struct tdls_peer_info *peer = buf;
1235         int count = 0;
1236         unsigned long flags;
1237
1238         if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
1239                 return 0;
1240
1241         /* make sure we are in station mode and connected */
1242         if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected))
1243                 return 0;
1244
1245         spin_lock_irqsave(&priv->sta_list_spinlock, flags);
1246         list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1247                 if (mwifiex_is_tdls_link_setup(sta_ptr->tdls_status)) {
1248                         ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr);
1249                         peer++;
1250                         count++;
1251                         if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED)
1252                                 break;
1253                 }
1254         }
1255         spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
1256
1257         return count;
1258 }
1259
1260 void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv)
1261 {
1262         struct mwifiex_sta_node *sta_ptr;
1263         struct mwifiex_ds_tdls_oper tdls_oper;
1264         unsigned long flags;
1265
1266         if (list_empty(&priv->sta_list))
1267                 return;
1268
1269         list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1270                 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1271
1272                 if (sta_ptr->is_11n_enabled) {
1273                         mwifiex_11n_cleanup_reorder_tbl(priv);
1274                         spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1275                                           flags);
1276                         mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1277                         spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1278                                                flags);
1279                 }
1280
1281                 mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr,
1282                                              TDLS_LINK_TEARDOWN);
1283                 memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN);
1284                 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1285                 if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1286                                      HostCmd_ACT_GEN_SET, 0, &tdls_oper, false))
1287                         mwifiex_dbg(priv->adapter, ERROR,
1288                                     "Disable link failed for TDLS peer %pM",
1289                                     sta_ptr->mac_addr);
1290         }
1291
1292         mwifiex_del_all_sta_list(priv);
1293 }
1294
1295 int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb)
1296 {
1297         struct mwifiex_auto_tdls_peer *peer;
1298         unsigned long flags;
1299         u8 mac[ETH_ALEN];
1300
1301         ether_addr_copy(mac, skb->data);
1302
1303         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1304         list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1305                 if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) {
1306                         if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1307                             peer->tdls_status == TDLS_NOT_SETUP &&
1308                             (peer->failure_count <
1309                              MWIFIEX_TDLS_MAX_FAIL_COUNT)) {
1310                                 peer->tdls_status = TDLS_SETUP_INPROGRESS;
1311                                 mwifiex_dbg(priv->adapter, INFO,
1312                                             "setup TDLS link, peer=%pM rssi=%d\n",
1313                                             peer->mac_addr, peer->rssi);
1314
1315                                 cfg80211_tdls_oper_request(priv->netdev,
1316                                                            peer->mac_addr,
1317                                                            NL80211_TDLS_SETUP,
1318                                                            0, GFP_ATOMIC);
1319                                 peer->do_setup = false;
1320                                 priv->check_tdls_tx = false;
1321                         } else if (peer->failure_count <
1322                                    MWIFIEX_TDLS_MAX_FAIL_COUNT &&
1323                                    peer->do_discover) {
1324                                 mwifiex_send_tdls_data_frame(priv,
1325                                                              peer->mac_addr,
1326                                                     WLAN_TDLS_DISCOVERY_REQUEST,
1327                                                              1, 0, NULL, 0);
1328                                 peer->do_discover = false;
1329                         }
1330                 }
1331         }
1332         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1333
1334         return 0;
1335 }
1336
1337 void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv)
1338 {
1339         struct mwifiex_auto_tdls_peer *peer, *tmp_node;
1340         unsigned long flags;
1341
1342         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1343         list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) {
1344                 list_del(&peer->list);
1345                 kfree(peer);
1346         }
1347
1348         INIT_LIST_HEAD(&priv->auto_tdls_list);
1349         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1350         priv->check_tdls_tx = false;
1351 }
1352
1353 void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac)
1354 {
1355         struct mwifiex_auto_tdls_peer *tdls_peer;
1356         unsigned long flags;
1357
1358         if (!priv->adapter->auto_tdls)
1359                 return;
1360
1361         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1362         list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1363                 if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) {
1364                         tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1365                         tdls_peer->rssi_jiffies = jiffies;
1366                         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1367                         return;
1368                 }
1369         }
1370
1371         /* create new TDLS peer */
1372         tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC);
1373         if (tdls_peer) {
1374                 ether_addr_copy(tdls_peer->mac_addr, mac);
1375                 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1376                 tdls_peer->rssi_jiffies = jiffies;
1377                 INIT_LIST_HEAD(&tdls_peer->list);
1378                 list_add_tail(&tdls_peer->list, &priv->auto_tdls_list);
1379                 mwifiex_dbg(priv->adapter, INFO,
1380                             "Add auto TDLS peer= %pM to list\n", mac);
1381         }
1382
1383         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1384 }
1385
1386 void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
1387                                           const u8 *mac, u8 link_status)
1388 {
1389         struct mwifiex_auto_tdls_peer *peer;
1390         unsigned long flags;
1391
1392         if (!priv->adapter->auto_tdls)
1393                 return;
1394
1395         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1396         list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1397                 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1398                         if ((link_status == TDLS_NOT_SETUP) &&
1399                             (peer->tdls_status == TDLS_SETUP_INPROGRESS))
1400                                 peer->failure_count++;
1401                         else if (mwifiex_is_tdls_link_setup(link_status))
1402                                 peer->failure_count = 0;
1403
1404                         peer->tdls_status = link_status;
1405                         break;
1406                 }
1407         }
1408         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1409 }
1410
1411 void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv,
1412                                           u8 *mac, s8 snr, s8 nflr)
1413 {
1414         struct mwifiex_auto_tdls_peer *peer;
1415         unsigned long flags;
1416
1417         if (!priv->adapter->auto_tdls)
1418                 return;
1419
1420         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1421         list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1422                 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1423                         peer->rssi = nflr - snr;
1424                         peer->rssi_jiffies = jiffies;
1425                         break;
1426                 }
1427         }
1428         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1429 }
1430
1431 void mwifiex_check_auto_tdls(unsigned long context)
1432 {
1433         struct mwifiex_private *priv = (struct mwifiex_private *)context;
1434         struct mwifiex_auto_tdls_peer *tdls_peer;
1435         unsigned long flags;
1436         u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED;
1437
1438         if (WARN_ON_ONCE(!priv || !priv->adapter)) {
1439                 pr_err("mwifiex: %s: adapter or private structure is NULL\n",
1440                        __func__);
1441                 return;
1442         }
1443
1444         if (unlikely(!priv->adapter->auto_tdls))
1445                 return;
1446
1447         if (!priv->auto_tdls_timer_active) {
1448                 mwifiex_dbg(priv->adapter, INFO,
1449                             "auto TDLS timer inactive; return");
1450                 return;
1451         }
1452
1453         priv->check_tdls_tx = false;
1454
1455         if (list_empty(&priv->auto_tdls_list)) {
1456                 mod_timer(&priv->auto_tdls_timer,
1457                           jiffies +
1458                           msecs_to_jiffies(MWIFIEX_TIMER_10S));
1459                 return;
1460         }
1461
1462         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1463         list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1464                 if ((jiffies - tdls_peer->rssi_jiffies) >
1465                     (MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) {
1466                         tdls_peer->rssi = 0;
1467                         tdls_peer->do_discover = true;
1468                         priv->check_tdls_tx = true;
1469                 }
1470
1471                 if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) ||
1472                      !tdls_peer->rssi) &&
1473                     mwifiex_is_tdls_link_setup(tdls_peer->tdls_status)) {
1474                         tdls_peer->tdls_status = TDLS_LINK_TEARDOWN;
1475                         mwifiex_dbg(priv->adapter, MSG,
1476                                     "teardown TDLS link,peer=%pM rssi=%d\n",
1477                                     tdls_peer->mac_addr, -tdls_peer->rssi);
1478                         tdls_peer->do_discover = true;
1479                         priv->check_tdls_tx = true;
1480                         cfg80211_tdls_oper_request(priv->netdev,
1481                                                    tdls_peer->mac_addr,
1482                                                    NL80211_TDLS_TEARDOWN,
1483                                                    reason, GFP_ATOMIC);
1484                 } else if (tdls_peer->rssi &&
1485                            tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1486                            tdls_peer->tdls_status == TDLS_NOT_SETUP &&
1487                            tdls_peer->failure_count <
1488                            MWIFIEX_TDLS_MAX_FAIL_COUNT) {
1489                                 priv->check_tdls_tx = true;
1490                                 tdls_peer->do_setup = true;
1491                                 mwifiex_dbg(priv->adapter, INFO,
1492                                             "check TDLS with peer=%pM\t"
1493                                             "rssi=%d\n", tdls_peer->mac_addr,
1494                                             tdls_peer->rssi);
1495                 }
1496         }
1497         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1498
1499         mod_timer(&priv->auto_tdls_timer,
1500                   jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1501 }
1502
1503 void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv)
1504 {
1505         setup_timer(&priv->auto_tdls_timer, mwifiex_check_auto_tdls,
1506                     (unsigned long)priv);
1507         priv->auto_tdls_timer_active = true;
1508         mod_timer(&priv->auto_tdls_timer,
1509                   jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1510 }
1511
1512 void mwifiex_clean_auto_tdls(struct mwifiex_private *priv)
1513 {
1514         if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
1515             priv->adapter->auto_tdls &&
1516             priv->bss_type == MWIFIEX_BSS_TYPE_STA) {
1517                 priv->auto_tdls_timer_active = false;
1518                 del_timer(&priv->auto_tdls_timer);
1519                 mwifiex_flush_auto_tdls_list(priv);
1520         }
1521 }
1522
1523 static int mwifiex_config_tdls(struct mwifiex_private *priv, u8 enable)
1524 {
1525         struct mwifiex_tdls_config config;
1526
1527         config.enable = cpu_to_le16(enable);
1528         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1529                                 ACT_TDLS_CS_ENABLE_CONFIG, 0, &config, true);
1530 }
1531
1532 int mwifiex_config_tdls_enable(struct mwifiex_private *priv)
1533 {
1534         return mwifiex_config_tdls(priv, true);
1535 }
1536
1537 int mwifiex_config_tdls_disable(struct mwifiex_private *priv)
1538 {
1539         return mwifiex_config_tdls(priv, false);
1540 }
1541
1542 int mwifiex_config_tdls_cs_params(struct mwifiex_private *priv)
1543 {
1544         struct mwifiex_tdls_config_cs_params config_tdls_cs_params;
1545
1546         config_tdls_cs_params.unit_time = MWIFIEX_DEF_CS_UNIT_TIME;
1547         config_tdls_cs_params.thr_otherlink = MWIFIEX_DEF_CS_THR_OTHERLINK;
1548         config_tdls_cs_params.thr_directlink = MWIFIEX_DEF_THR_DIRECTLINK;
1549
1550         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1551                                 ACT_TDLS_CS_PARAMS, 0,
1552                                 &config_tdls_cs_params, true);
1553 }
1554
1555 int mwifiex_stop_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac)
1556 {
1557         struct mwifiex_tdls_stop_cs_params stop_tdls_cs_params;
1558
1559         ether_addr_copy(stop_tdls_cs_params.peer_mac, peer_mac);
1560
1561         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1562                                 ACT_TDLS_CS_STOP, 0,
1563                                 &stop_tdls_cs_params, true);
1564 }
1565
1566 int mwifiex_start_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac,
1567                           u8 primary_chan, u8 second_chan_offset, u8 band)
1568 {
1569         struct mwifiex_tdls_init_cs_params start_tdls_cs_params;
1570
1571         ether_addr_copy(start_tdls_cs_params.peer_mac, peer_mac);
1572         start_tdls_cs_params.primary_chan = primary_chan;
1573         start_tdls_cs_params.second_chan_offset = second_chan_offset;
1574         start_tdls_cs_params.band = band;
1575
1576         start_tdls_cs_params.switch_time = cpu_to_le16(MWIFIEX_DEF_CS_TIME);
1577         start_tdls_cs_params.switch_timeout =
1578                                         cpu_to_le16(MWIFIEX_DEF_CS_TIMEOUT);
1579         start_tdls_cs_params.reg_class = MWIFIEX_DEF_CS_REG_CLASS;
1580         start_tdls_cs_params.periodicity = MWIFIEX_DEF_CS_PERIODICITY;
1581
1582         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1583                                 ACT_TDLS_CS_INIT, 0,
1584                                 &start_tdls_cs_params, true);
1585 }