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