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                             "Insuffient 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 = (void *)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 = (void *)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 = (void *)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 = (void *)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 = (void *)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 = (void *)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 = (void *)skb_put(skb, MWIFIEX_TDLS_WMM_INFO_SIZE +
 417                               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 = (void *)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 = (void *)skb_put(skb, (sizeof(struct ieee_types_header) +
 447                                           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 = (void *)skb_put(skb, (sizeof(struct ieee_types_header) +
 459                                           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 = (void *)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 = (void *)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 = (void *)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 = (void *)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                         memcpy(skb_put(skb, extra_ies_len), extra_ies,
 683                                extra_ies_len);
 684                 mwifiex_tdls_add_link_ie(skb, priv->curr_addr, peer,
 685                                          priv->cfg_bssid);
 686                 break;
 687         case WLAN_TDLS_SETUP_RESPONSE:
 688                 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
 689                                                    dialog_token, status_code,
 690                                                    skb);
 691                 if (ret) {
 692                         dev_kfree_skb_any(skb);
 693                         return ret;
 694                 }
 695                 if (extra_ies_len)
 696                         memcpy(skb_put(skb, extra_ies_len), extra_ies,
 697                                extra_ies_len);
 698                 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
 699                                          priv->cfg_bssid);
 700                 break;
 701         }
 702
 703         switch (action_code) {
 704         case WLAN_TDLS_SETUP_REQUEST:
 705         case WLAN_TDLS_SETUP_RESPONSE:
 706                 skb->priority = MWIFIEX_PRIO_BK;
 707                 break;
 708         default:
 709                 skb->priority = MWIFIEX_PRIO_VI;
 710                 break;
 711         }
 712
 713         tx_info = MWIFIEX_SKB_TXCB(skb);
 714         memset(tx_info, 0, sizeof(*tx_info));
 715         tx_info->bss_num = priv->bss_num;
 716         tx_info->bss_type = priv->bss_type;
 717
 718         __net_timestamp(skb);
 719         mwifiex_queue_tx_pkt(priv, skb);
 720
 721         /* Delay 10ms to make sure tdls setup confirm/teardown frame
 722          * is received by peer
 723         */
 724         if (action_code == WLAN_TDLS_SETUP_CONFIRM ||
 725             action_code == WLAN_TDLS_TEARDOWN)
 726                 msleep_interruptible(10);
 727
 728         return 0;
 729 }
 730
 731 static int
 732 mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv,
 733                                     const u8 *peer,
 734                                     u8 action_code, u8 dialog_token,
 735                                     u16 status_code, struct sk_buff *skb)
 736 {
 737         struct ieee80211_mgmt *mgmt;
 738         u8 bc_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 739         int ret;
 740         u16 capab;
 741         struct ieee80211_ht_cap *ht_cap;
 742         u8 radio, *pos;
 743
 744         capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
 745
 746         mgmt = (void *)skb_put(skb, offsetof(struct ieee80211_mgmt, u));
 747
 748         memset(mgmt, 0, 24);
 749         memcpy(mgmt->da, peer, ETH_ALEN);
 750         memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN);
 751         memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);
 752         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 753                                           IEEE80211_STYPE_ACTION);
 754
 755         /* add address 4 */
 756         pos = skb_put(skb, ETH_ALEN);
 757
 758         switch (action_code) {
 759         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
 760                 skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1);
 761                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
 762                 mgmt->u.action.u.tdls_discover_resp.action_code =
 763                                               WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
 764                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
 765                                                                    dialog_token;
 766                 mgmt->u.action.u.tdls_discover_resp.capability =
 767                                                              cpu_to_le16(capab);
 768                 /* move back for addr4 */
 769                 memmove(pos + ETH_ALEN, &mgmt->u.action.category,
 770                         sizeof(mgmt->u.action.u.tdls_discover_resp));
 771                 /* init address 4 */
 772                 memcpy(pos, bc_addr, ETH_ALEN);
 773
 774                 ret = mwifiex_tdls_append_rates_ie(priv, skb);
 775                 if (ret) {
 776                         dev_kfree_skb_any(skb);
 777                         return ret;
 778                 }
 779
 780                 pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
 781                 *pos++ = WLAN_EID_HT_CAPABILITY;
 782                 *pos++ = sizeof(struct ieee80211_ht_cap);
 783                 ht_cap = (void *)pos;
 784                 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 785                 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
 786                 if (ret) {
 787                         dev_kfree_skb_any(skb);
 788                         return ret;
 789                 }
 790
 791                 if (priv->adapter->is_hw_11ac_capable) {
 792                         ret = mwifiex_tdls_add_vht_capab(priv, skb);
 793                         if (ret) {
 794                                 dev_kfree_skb_any(skb);
 795                                 return ret;
 796                         }
 797                         mwifiex_tdls_add_aid(priv, skb);
 798                 }
 799
 800                 mwifiex_tdls_add_ext_capab(priv, skb);
 801                 mwifiex_tdls_add_bss_co_2040(skb);
 802                 mwifiex_tdls_add_supported_chan(skb);
 803                 mwifiex_tdls_add_qos_capab(skb);
 804                 mwifiex_tdls_add_oper_class(skb);
 805                 break;
 806         default:
 807                 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS action frame type\n");
 808                 return -EINVAL;
 809         }
 810
 811         return 0;
 812 }
 813
 814 int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer,
 815                                    u8 action_code, u8 dialog_token,
 816                                    u16 status_code, const u8 *extra_ies,
 817                                    size_t extra_ies_len)
 818 {
 819         struct sk_buff *skb;
 820         struct mwifiex_txinfo *tx_info;
 821         u8 *pos;
 822         u32 pkt_type, tx_control;
 823         u16 pkt_len, skb_len;
 824
 825         skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
 826                   max(sizeof(struct ieee80211_mgmt),
 827                       sizeof(struct ieee80211_tdls_data)) +
 828                   MWIFIEX_MGMT_FRAME_HEADER_SIZE +
 829                   MWIFIEX_SUPPORTED_RATES +
 830                   sizeof(struct ieee_types_extcap) +
 831                   sizeof(struct ieee80211_ht_cap) +
 832                   sizeof(struct ieee_types_bss_co_2040) +
 833                   sizeof(struct ieee80211_ht_operation) +
 834                   sizeof(struct ieee80211_tdls_lnkie) +
 835                   extra_ies_len +
 836                   3 + /* Qos Info */
 837                   ETH_ALEN; /* Address4 */
 838
 839         if (priv->adapter->is_hw_11ac_capable)
 840                 skb_len += sizeof(struct ieee_types_vht_cap) +
 841                            sizeof(struct ieee_types_vht_oper) +
 842                            sizeof(struct ieee_types_aid);
 843
 844         skb = dev_alloc_skb(skb_len);
 845         if (!skb) {
 846                 mwifiex_dbg(priv->adapter, ERROR,
 847                             "allocate skb failed for management frame\n");
 848                 return -ENOMEM;
 849         }
 850
 851         skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
 852
 853         pkt_type = PKT_TYPE_MGMT;
 854         tx_control = 0;
 855         pos = skb_put_zero(skb,
 856                            MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
 857         memcpy(pos, &pkt_type, sizeof(pkt_type));
 858         memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control));
 859
 860         if (mwifiex_construct_tdls_action_frame(priv, peer, action_code,
 861                                                 dialog_token, status_code,
 862                                                 skb)) {
 863                 dev_kfree_skb_any(skb);
 864                 return -EINVAL;
 865         }
 866
 867         if (extra_ies_len)
 868                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
 869
 870         /* the TDLS link IE is always added last we are the responder */
 871
 872         mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
 873                                  priv->cfg_bssid);
 874
 875         skb->priority = MWIFIEX_PRIO_VI;
 876
 877         tx_info = MWIFIEX_SKB_TXCB(skb);
 878         memset(tx_info, 0, sizeof(*tx_info));
 879         tx_info->bss_num = priv->bss_num;
 880         tx_info->bss_type = priv->bss_type;
 881         tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
 882
 883         pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len);
 884         memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len,
 885                sizeof(pkt_len));
 886         __net_timestamp(skb);
 887         mwifiex_queue_tx_pkt(priv, skb);
 888
 889         return 0;
 890 }
 891
 892 /* This function process tdls action frame from peer.
 893  * Peer capabilities are stored into station node structure.
 894  */
 895 void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
 896                                        u8 *buf, int len)
 897 {
 898         struct mwifiex_sta_node *sta_ptr;
 899         u8 *peer, *pos, *end;
 900         u8 i, action, basic;
 901         u16 cap = 0;
 902         int ie_len = 0;
 903
 904         if (len < (sizeof(struct ethhdr) + 3))
 905                 return;
 906         if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE)
 907                 return;
 908         if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS)
 909                 return;
 910
 911         peer = buf + ETH_ALEN;
 912         action = *(buf + sizeof(struct ethhdr) + 2);
 913         mwifiex_dbg(priv->adapter, DATA,
 914                     "rx:tdls action: peer=%pM, action=%d\n", peer, action);
 915
 916         switch (action) {
 917         case WLAN_TDLS_SETUP_REQUEST:
 918                 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
 919                         return;
 920
 921                 pos = buf + sizeof(struct ethhdr) + 4;
 922                 /* payload 1+ category 1 + action 1 + dialog 1 */
 923                 cap = get_unaligned_le16(pos);
 924                 ie_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN;
 925                 pos += 2;
 926                 break;
 927
 928         case WLAN_TDLS_SETUP_RESPONSE:
 929                 if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN))
 930                         return;
 931                 /* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/
 932                 pos = buf + sizeof(struct ethhdr) + 6;
 933                 cap = get_unaligned_le16(pos);
 934                 ie_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN;
 935                 pos += 2;
 936                 break;
 937
 938         case WLAN_TDLS_SETUP_CONFIRM:
 939                 if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN))
 940                         return;
 941                 pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN;
 942                 ie_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN;
 943                 break;
 944         default:
 945                 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
 946                 return;
 947         }
 948
 949         sta_ptr = mwifiex_add_sta_entry(priv, peer);
 950         if (!sta_ptr)
 951                 return;
 952
 953         sta_ptr->tdls_cap.capab = cpu_to_le16(cap);
 954
 955         for (end = pos + ie_len; pos + 1 < end; pos += 2 + pos[1]) {
 956                 if (pos + 2 + pos[1] > end)
 957                         break;
 958
 959                 switch (*pos) {
 960                 case WLAN_EID_SUPP_RATES:
 961                         sta_ptr->tdls_cap.rates_len = pos[1];
 962                         for (i = 0; i < pos[1]; i++)
 963                                 sta_ptr->tdls_cap.rates[i] = pos[i + 2];
 964                         break;
 965
 966                 case WLAN_EID_EXT_SUPP_RATES:
 967                         basic = sta_ptr->tdls_cap.rates_len;
 968                         for (i = 0; i < pos[1]; i++)
 969                                 sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
 970                         sta_ptr->tdls_cap.rates_len += pos[1];
 971                         break;
 972                 case WLAN_EID_HT_CAPABILITY:
 973                         memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos,
 974                                sizeof(struct ieee80211_ht_cap));
 975                         sta_ptr->is_11n_enabled = 1;
 976                         break;
 977                 case WLAN_EID_HT_OPERATION:
 978                         memcpy(&sta_ptr->tdls_cap.ht_oper, pos,
 979                                sizeof(struct ieee80211_ht_operation));
 980                         break;
 981                 case WLAN_EID_BSS_COEX_2040:
 982                         sta_ptr->tdls_cap.coex_2040 = pos[2];
 983                         break;
 984                 case WLAN_EID_EXT_CAPABILITY:
 985                         memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
 986                                sizeof(struct ieee_types_header) +
 987                                min_t(u8, pos[1], 8));
 988                         break;
 989                 case WLAN_EID_RSN:
 990                         memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
 991                                sizeof(struct ieee_types_header) +
 992                                min_t(u8, pos[1], IEEE_MAX_IE_SIZE -
 993                                      sizeof(struct ieee_types_header)));
 994                         break;
 995                 case WLAN_EID_QOS_CAPA:
 996                         sta_ptr->tdls_cap.qos_info = pos[2];
 997                         break;
 998                 case WLAN_EID_VHT_OPERATION:
 999                         if (priv->adapter->is_hw_11ac_capable)
1000                                 memcpy(&sta_ptr->tdls_cap.vhtoper, pos,
1001                                        sizeof(struct ieee80211_vht_operation));
1002                         break;
1003                 case WLAN_EID_VHT_CAPABILITY:
1004                         if (priv->adapter->is_hw_11ac_capable) {
1005                                 memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos,
1006                                        sizeof(struct ieee80211_vht_cap));
1007                                 sta_ptr->is_11ac_enabled = 1;
1008                         }
1009                         break;
1010                 case WLAN_EID_AID:
1011                         if (priv->adapter->is_hw_11ac_capable)
1012                                 sta_ptr->tdls_cap.aid =
1013                                         get_unaligned_le16((pos + 2));
1014                 default:
1015                         break;
1016                 }
1017         }
1018
1019         return;
1020 }
1021
1022 static int
1023 mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer)
1024 {
1025         struct mwifiex_sta_node *sta_ptr;
1026         struct mwifiex_ds_tdls_oper tdls_oper;
1027
1028         memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1029         sta_ptr = mwifiex_get_sta_entry(priv, peer);
1030
1031         if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) {
1032                 mwifiex_dbg(priv->adapter, ERROR,
1033                             "link absent for peer %pM; cannot config\n", peer);
1034                 return -EINVAL;
1035         }
1036
1037         memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1038         tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK;
1039         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1040                                 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1041 }
1042
1043 static int
1044 mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer)
1045 {
1046         struct mwifiex_sta_node *sta_ptr;
1047         struct mwifiex_ds_tdls_oper tdls_oper;
1048
1049         memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1050         sta_ptr = mwifiex_get_sta_entry(priv, peer);
1051
1052         if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) {
1053                 mwifiex_dbg(priv->adapter, WARN,
1054                             "Setup already in progress for peer %pM\n", peer);
1055                 return 0;
1056         }
1057
1058         sta_ptr = mwifiex_add_sta_entry(priv, peer);
1059         if (!sta_ptr)
1060                 return -ENOMEM;
1061
1062         sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS;
1063         mwifiex_hold_tdls_packets(priv, peer);
1064         memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1065         tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK;
1066         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1067                                 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1068 }
1069
1070 static int
1071 mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer)
1072 {
1073         struct mwifiex_sta_node *sta_ptr;
1074         struct mwifiex_ds_tdls_oper tdls_oper;
1075         unsigned long flags;
1076
1077         memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1078         sta_ptr = mwifiex_get_sta_entry(priv, peer);
1079
1080         if (sta_ptr) {
1081                 if (sta_ptr->is_11n_enabled) {
1082                         mwifiex_11n_cleanup_reorder_tbl(priv);
1083                         spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1084                                           flags);
1085                         mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1086                         spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1087                                                flags);
1088                 }
1089                 mwifiex_del_sta_entry(priv, peer);
1090         }
1091
1092         mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1093         mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP);
1094         memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1095         tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1096         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1097                                 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1098 }
1099
1100 static int
1101 mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer)
1102 {
1103         struct mwifiex_sta_node *sta_ptr;
1104         struct ieee80211_mcs_info mcs;
1105         unsigned long flags;
1106         int i;
1107
1108         sta_ptr = mwifiex_get_sta_entry(priv, peer);
1109
1110         if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) {
1111                 mwifiex_dbg(priv->adapter, MSG,
1112                             "tdls: enable link %pM success\n", peer);
1113
1114                 sta_ptr->tdls_status = TDLS_SETUP_COMPLETE;
1115
1116                 mcs = sta_ptr->tdls_cap.ht_capb.mcs;
1117                 if (mcs.rx_mask[0] != 0xff)
1118                         sta_ptr->is_11n_enabled = true;
1119                 if (sta_ptr->is_11n_enabled) {
1120                         if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) &
1121                             IEEE80211_HT_CAP_MAX_AMSDU)
1122                                 sta_ptr->max_amsdu =
1123                                         MWIFIEX_TX_DATA_BUF_SIZE_8K;
1124                         else
1125                                 sta_ptr->max_amsdu =
1126                                         MWIFIEX_TX_DATA_BUF_SIZE_4K;
1127
1128                         for (i = 0; i < MAX_NUM_TID; i++)
1129                                 sta_ptr->ampdu_sta[i] =
1130                                               priv->aggr_prio_tbl[i].ampdu_user;
1131                 } else {
1132                         for (i = 0; i < MAX_NUM_TID; i++)
1133                                 sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
1134                 }
1135                 if (sta_ptr->tdls_cap.extcap.ext_capab[3] &
1136                     WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) {
1137                         mwifiex_config_tdls_enable(priv);
1138                         mwifiex_config_tdls_cs_params(priv);
1139                 }
1140
1141                 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
1142                 mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE);
1143                 mwifiex_auto_tdls_update_peer_status(priv, peer,
1144                                                      TDLS_SETUP_COMPLETE);
1145         } else {
1146                 mwifiex_dbg(priv->adapter, ERROR,
1147                             "tdls: enable link %pM failed\n", peer);
1148                 if (sta_ptr) {
1149                         mwifiex_11n_cleanup_reorder_tbl(priv);
1150                         spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1151                                           flags);
1152                         mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1153                         spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1154                                                flags);
1155                         mwifiex_del_sta_entry(priv, peer);
1156                 }
1157                 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1158                 mwifiex_auto_tdls_update_peer_status(priv, peer,
1159                                                      TDLS_NOT_SETUP);
1160
1161                 return -1;
1162         }
1163
1164         return 0;
1165 }
1166
1167 int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action)
1168 {
1169         switch (action) {
1170         case MWIFIEX_TDLS_ENABLE_LINK:
1171                 return mwifiex_tdls_process_enable_link(priv, peer);
1172         case MWIFIEX_TDLS_DISABLE_LINK:
1173                 return mwifiex_tdls_process_disable_link(priv, peer);
1174         case MWIFIEX_TDLS_CREATE_LINK:
1175                 return mwifiex_tdls_process_create_link(priv, peer);
1176         case MWIFIEX_TDLS_CONFIG_LINK:
1177                 return mwifiex_tdls_process_config_link(priv, peer);
1178         }
1179         return 0;
1180 }
1181
1182 int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac)
1183 {
1184         struct mwifiex_sta_node *sta_ptr;
1185
1186         sta_ptr = mwifiex_get_sta_entry(priv, mac);
1187         if (sta_ptr)
1188                 return sta_ptr->tdls_status;
1189
1190         return TDLS_NOT_SETUP;
1191 }
1192
1193 int mwifiex_get_tdls_list(struct mwifiex_private *priv,
1194                           struct tdls_peer_info *buf)
1195 {
1196         struct mwifiex_sta_node *sta_ptr;
1197         struct tdls_peer_info *peer = buf;
1198         int count = 0;
1199         unsigned long flags;
1200
1201         if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
1202                 return 0;
1203
1204         /* make sure we are in station mode and connected */
1205         if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected))
1206                 return 0;
1207
1208         spin_lock_irqsave(&priv->sta_list_spinlock, flags);
1209         list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1210                 if (mwifiex_is_tdls_link_setup(sta_ptr->tdls_status)) {
1211                         ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr);
1212                         peer++;
1213                         count++;
1214                         if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED)
1215                                 break;
1216                 }
1217         }
1218         spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
1219
1220         return count;
1221 }
1222
1223 void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv)
1224 {
1225         struct mwifiex_sta_node *sta_ptr;
1226         struct mwifiex_ds_tdls_oper tdls_oper;
1227         unsigned long flags;
1228
1229         if (list_empty(&priv->sta_list))
1230                 return;
1231
1232         list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1233                 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1234
1235                 if (sta_ptr->is_11n_enabled) {
1236                         mwifiex_11n_cleanup_reorder_tbl(priv);
1237                         spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1238                                           flags);
1239                         mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1240                         spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1241                                                flags);
1242                 }
1243
1244                 mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr,
1245                                              TDLS_LINK_TEARDOWN);
1246                 memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN);
1247                 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1248                 if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1249                                      HostCmd_ACT_GEN_SET, 0, &tdls_oper, false))
1250                         mwifiex_dbg(priv->adapter, ERROR,
1251                                     "Disable link failed for TDLS peer %pM",
1252                                     sta_ptr->mac_addr);
1253         }
1254
1255         mwifiex_del_all_sta_list(priv);
1256 }
1257
1258 int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb)
1259 {
1260         struct mwifiex_auto_tdls_peer *peer;
1261         unsigned long flags;
1262         u8 mac[ETH_ALEN];
1263
1264         ether_addr_copy(mac, skb->data);
1265
1266         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1267         list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1268                 if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) {
1269                         if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1270                             peer->tdls_status == TDLS_NOT_SETUP &&
1271                             (peer->failure_count <
1272                              MWIFIEX_TDLS_MAX_FAIL_COUNT)) {
1273                                 peer->tdls_status = TDLS_SETUP_INPROGRESS;
1274                                 mwifiex_dbg(priv->adapter, INFO,
1275                                             "setup TDLS link, peer=%pM rssi=%d\n",
1276                                             peer->mac_addr, peer->rssi);
1277
1278                                 cfg80211_tdls_oper_request(priv->netdev,
1279                                                            peer->mac_addr,
1280                                                            NL80211_TDLS_SETUP,
1281                                                            0, GFP_ATOMIC);
1282                                 peer->do_setup = false;
1283                                 priv->check_tdls_tx = false;
1284                         } else if (peer->failure_count <
1285                                    MWIFIEX_TDLS_MAX_FAIL_COUNT &&
1286                                    peer->do_discover) {
1287                                 mwifiex_send_tdls_data_frame(priv,
1288                                                              peer->mac_addr,
1289                                                     WLAN_TDLS_DISCOVERY_REQUEST,
1290                                                              1, 0, NULL, 0);
1291                                 peer->do_discover = false;
1292                         }
1293                 }
1294         }
1295         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1296
1297         return 0;
1298 }
1299
1300 void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv)
1301 {
1302         struct mwifiex_auto_tdls_peer *peer, *tmp_node;
1303         unsigned long flags;
1304
1305         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1306         list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) {
1307                 list_del(&peer->list);
1308                 kfree(peer);
1309         }
1310
1311         INIT_LIST_HEAD(&priv->auto_tdls_list);
1312         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1313         priv->check_tdls_tx = false;
1314 }
1315
1316 void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac)
1317 {
1318         struct mwifiex_auto_tdls_peer *tdls_peer;
1319         unsigned long flags;
1320
1321         if (!priv->adapter->auto_tdls)
1322                 return;
1323
1324         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1325         list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1326                 if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) {
1327                         tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1328                         tdls_peer->rssi_jiffies = jiffies;
1329                         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1330                         return;
1331                 }
1332         }
1333
1334         /* create new TDLS peer */
1335         tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC);
1336         if (tdls_peer) {
1337                 ether_addr_copy(tdls_peer->mac_addr, mac);
1338                 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1339                 tdls_peer->rssi_jiffies = jiffies;
1340                 INIT_LIST_HEAD(&tdls_peer->list);
1341                 list_add_tail(&tdls_peer->list, &priv->auto_tdls_list);
1342                 mwifiex_dbg(priv->adapter, INFO,
1343                             "Add auto TDLS peer= %pM to list\n", mac);
1344         }
1345
1346         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1347 }
1348
1349 void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
1350                                           const u8 *mac, u8 link_status)
1351 {
1352         struct mwifiex_auto_tdls_peer *peer;
1353         unsigned long flags;
1354
1355         if (!priv->adapter->auto_tdls)
1356                 return;
1357
1358         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1359         list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1360                 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1361                         if ((link_status == TDLS_NOT_SETUP) &&
1362                             (peer->tdls_status == TDLS_SETUP_INPROGRESS))
1363                                 peer->failure_count++;
1364                         else if (mwifiex_is_tdls_link_setup(link_status))
1365                                 peer->failure_count = 0;
1366
1367                         peer->tdls_status = link_status;
1368                         break;
1369                 }
1370         }
1371         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1372 }
1373
1374 void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv,
1375                                           u8 *mac, s8 snr, s8 nflr)
1376 {
1377         struct mwifiex_auto_tdls_peer *peer;
1378         unsigned long flags;
1379
1380         if (!priv->adapter->auto_tdls)
1381                 return;
1382
1383         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1384         list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1385                 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1386                         peer->rssi = nflr - snr;
1387                         peer->rssi_jiffies = jiffies;
1388                         break;
1389                 }
1390         }
1391         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1392 }
1393
1394 void mwifiex_check_auto_tdls(unsigned long context)
1395 {
1396         struct mwifiex_private *priv = (struct mwifiex_private *)context;
1397         struct mwifiex_auto_tdls_peer *tdls_peer;
1398         unsigned long flags;
1399         u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED;
1400
1401         if (WARN_ON_ONCE(!priv || !priv->adapter)) {
1402                 pr_err("mwifiex: %s: adapter or private structure is NULL\n",
1403                        __func__);
1404                 return;
1405         }
1406
1407         if (unlikely(!priv->adapter->auto_tdls))
1408                 return;
1409
1410         if (!priv->auto_tdls_timer_active) {
1411                 mwifiex_dbg(priv->adapter, INFO,
1412                             "auto TDLS timer inactive; return");
1413                 return;
1414         }
1415
1416         priv->check_tdls_tx = false;
1417
1418         if (list_empty(&priv->auto_tdls_list)) {
1419                 mod_timer(&priv->auto_tdls_timer,
1420                           jiffies +
1421                           msecs_to_jiffies(MWIFIEX_TIMER_10S));
1422                 return;
1423         }
1424
1425         spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1426         list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1427                 if ((jiffies - tdls_peer->rssi_jiffies) >
1428                     (MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) {
1429                         tdls_peer->rssi = 0;
1430                         tdls_peer->do_discover = true;
1431                         priv->check_tdls_tx = true;
1432                 }
1433
1434                 if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) ||
1435                      !tdls_peer->rssi) &&
1436                     mwifiex_is_tdls_link_setup(tdls_peer->tdls_status)) {
1437                         tdls_peer->tdls_status = TDLS_LINK_TEARDOWN;
1438                         mwifiex_dbg(priv->adapter, MSG,
1439                                     "teardown TDLS link,peer=%pM rssi=%d\n",
1440                                     tdls_peer->mac_addr, -tdls_peer->rssi);
1441                         tdls_peer->do_discover = true;
1442                         priv->check_tdls_tx = true;
1443                         cfg80211_tdls_oper_request(priv->netdev,
1444                                                    tdls_peer->mac_addr,
1445                                                    NL80211_TDLS_TEARDOWN,
1446                                                    reason, GFP_ATOMIC);
1447                 } else if (tdls_peer->rssi &&
1448                            tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1449                            tdls_peer->tdls_status == TDLS_NOT_SETUP &&
1450                            tdls_peer->failure_count <
1451                            MWIFIEX_TDLS_MAX_FAIL_COUNT) {
1452                                 priv->check_tdls_tx = true;
1453                                 tdls_peer->do_setup = true;
1454                                 mwifiex_dbg(priv->adapter, INFO,
1455                                             "check TDLS with peer=%pM\t"
1456                                             "rssi=%d\n", tdls_peer->mac_addr,
1457                                             tdls_peer->rssi);
1458                 }
1459         }
1460         spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1461
1462         mod_timer(&priv->auto_tdls_timer,
1463                   jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1464 }
1465
1466 void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv)
1467 {
1468         setup_timer(&priv->auto_tdls_timer, mwifiex_check_auto_tdls,
1469                     (unsigned long)priv);
1470         priv->auto_tdls_timer_active = true;
1471         mod_timer(&priv->auto_tdls_timer,
1472                   jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1473 }
1474
1475 void mwifiex_clean_auto_tdls(struct mwifiex_private *priv)
1476 {
1477         if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
1478             priv->adapter->auto_tdls &&
1479             priv->bss_type == MWIFIEX_BSS_TYPE_STA) {
1480                 priv->auto_tdls_timer_active = false;
1481                 del_timer(&priv->auto_tdls_timer);
1482                 mwifiex_flush_auto_tdls_list(priv);
1483         }
1484 }
1485
1486 static int mwifiex_config_tdls(struct mwifiex_private *priv, u8 enable)
1487 {
1488         struct mwifiex_tdls_config config;
1489
1490         config.enable = cpu_to_le16(enable);
1491         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1492                                 ACT_TDLS_CS_ENABLE_CONFIG, 0, &config, true);
1493 }
1494
1495 int mwifiex_config_tdls_enable(struct mwifiex_private *priv)
1496 {
1497         return mwifiex_config_tdls(priv, true);
1498 }
1499
1500 int mwifiex_config_tdls_disable(struct mwifiex_private *priv)
1501 {
1502         return mwifiex_config_tdls(priv, false);
1503 }
1504
1505 int mwifiex_config_tdls_cs_params(struct mwifiex_private *priv)
1506 {
1507         struct mwifiex_tdls_config_cs_params config_tdls_cs_params;
1508
1509         config_tdls_cs_params.unit_time = MWIFIEX_DEF_CS_UNIT_TIME;
1510         config_tdls_cs_params.thr_otherlink = MWIFIEX_DEF_CS_THR_OTHERLINK;
1511         config_tdls_cs_params.thr_directlink = MWIFIEX_DEF_THR_DIRECTLINK;
1512
1513         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1514                                 ACT_TDLS_CS_PARAMS, 0,
1515                                 &config_tdls_cs_params, true);
1516 }
1517
1518 int mwifiex_stop_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac)
1519 {
1520         struct mwifiex_tdls_stop_cs_params stop_tdls_cs_params;
1521
1522         ether_addr_copy(stop_tdls_cs_params.peer_mac, peer_mac);
1523
1524         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1525                                 ACT_TDLS_CS_STOP, 0,
1526                                 &stop_tdls_cs_params, true);
1527 }
1528
1529 int mwifiex_start_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac,
1530                           u8 primary_chan, u8 second_chan_offset, u8 band)
1531 {
1532         struct mwifiex_tdls_init_cs_params start_tdls_cs_params;
1533
1534         ether_addr_copy(start_tdls_cs_params.peer_mac, peer_mac);
1535         start_tdls_cs_params.primary_chan = primary_chan;
1536         start_tdls_cs_params.second_chan_offset = second_chan_offset;
1537         start_tdls_cs_params.band = band;
1538
1539         start_tdls_cs_params.switch_time = cpu_to_le16(MWIFIEX_DEF_CS_TIME);
1540         start_tdls_cs_params.switch_timeout =
1541                                         cpu_to_le16(MWIFIEX_DEF_CS_TIMEOUT);
1542         start_tdls_cs_params.reg_class = MWIFIEX_DEF_CS_REG_CLASS;
1543         start_tdls_cs_params.periodicity = MWIFIEX_DEF_CS_PERIODICITY;
1544
1545         return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1546                                 ACT_TDLS_CS_INIT, 0,
1547                                 &start_tdls_cs_params, true);
1548 }