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