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