1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * NXP Wireless LAN device driver: 802.11n 4 * 5 * Copyright 2011-2020 NXP 6 */ 7 8 #include "decl.h" 9 #include "ioctl.h" 10 #include "util.h" 11 #include "fw.h" 12 #include "main.h" 13 #include "wmm.h" 14 #include "11n.h" 15 16 /* 17 * Fills HT capability information field, AMPDU Parameters field, HT extended 18 * capability field, and supported MCS set fields. 19 * 20 * HT capability information field, AMPDU Parameters field, supported MCS set 21 * fields are retrieved from cfg80211 stack 22 * 23 * RD responder bit to set to clear in the extended capability header. 24 */ 25 int mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type, 26 struct ieee80211_ht_cap *ht_cap) 27 { 28 uint16_t ht_ext_cap = le16_to_cpu(ht_cap->extended_ht_cap_info); 29 struct ieee80211_supported_band *sband = 30 priv->wdev.wiphy->bands[radio_type]; 31 32 if (WARN_ON_ONCE(!sband)) { 33 mwifiex_dbg(priv->adapter, ERROR, "Invalid radio type!\n"); 34 return -EINVAL; 35 } 36 37 ht_cap->ampdu_params_info = 38 (sband->ht_cap.ampdu_factor & 39 IEEE80211_HT_AMPDU_PARM_FACTOR) | 40 ((sband->ht_cap.ampdu_density << 41 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT) & 42 IEEE80211_HT_AMPDU_PARM_DENSITY); 43 44 memcpy((u8 *)&ht_cap->mcs, &sband->ht_cap.mcs, 45 sizeof(sband->ht_cap.mcs)); 46 47 if (priv->bss_mode == NL80211_IFTYPE_STATION || 48 (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 49 (priv->adapter->sec_chan_offset != 50 IEEE80211_HT_PARAM_CHA_SEC_NONE))) 51 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */ 52 SETHT_MCS32(ht_cap->mcs.rx_mask); 53 54 /* Clear RD responder bit */ 55 ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER; 56 57 ht_cap->cap_info = cpu_to_le16(sband->ht_cap.cap); 58 ht_cap->extended_ht_cap_info = cpu_to_le16(ht_ext_cap); 59 60 if (ISSUPP_BEAMFORMING(priv->adapter->hw_dot_11n_dev_cap)) 61 ht_cap->tx_BF_cap_info = cpu_to_le32(MWIFIEX_DEF_11N_TX_BF_CAP); 62 63 return 0; 64 } 65 66 /* 67 * This function returns the pointer to an entry in BA Stream 68 * table which matches the requested BA status. 69 */ 70 static struct mwifiex_tx_ba_stream_tbl * 71 mwifiex_get_ba_status(struct mwifiex_private *priv, 72 enum mwifiex_ba_status ba_status) 73 { 74 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 75 76 spin_lock_bh(&priv->tx_ba_stream_tbl_lock); 77 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 78 if (tx_ba_tsr_tbl->ba_status == ba_status) { 79 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); 80 return tx_ba_tsr_tbl; 81 } 82 } 83 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); 84 return NULL; 85 } 86 87 /* 88 * This function handles the command response of delete a block 89 * ack request. 90 * 91 * The function checks the response success status and takes action 92 * accordingly (send an add BA request in case of success, or recreate 93 * the deleted stream in case of failure, if the add BA was also 94 * initiated by us). 95 */ 96 int mwifiex_ret_11n_delba(struct mwifiex_private *priv, 97 struct host_cmd_ds_command *resp) 98 { 99 int tid; 100 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl; 101 struct host_cmd_ds_11n_delba *del_ba = &resp->params.del_ba; 102 uint16_t del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set); 103 104 tid = del_ba_param_set >> DELBA_TID_POS; 105 if (del_ba->del_result == BA_RESULT_SUCCESS) { 106 mwifiex_del_ba_tbl(priv, tid, del_ba->peer_mac_addr, 107 TYPE_DELBA_SENT, 108 INITIATOR_BIT(del_ba_param_set)); 109 110 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS); 111 if (tx_ba_tbl) 112 mwifiex_send_addba(priv, tx_ba_tbl->tid, 113 tx_ba_tbl->ra); 114 } else { /* 115 * In case of failure, recreate the deleted stream in case 116 * we initiated the DELBA 117 */ 118 if (!INITIATOR_BIT(del_ba_param_set)) 119 return 0; 120 121 mwifiex_create_ba_tbl(priv, del_ba->peer_mac_addr, tid, 122 BA_SETUP_INPROGRESS); 123 124 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS); 125 126 if (tx_ba_tbl) 127 mwifiex_del_ba_tbl(priv, tx_ba_tbl->tid, tx_ba_tbl->ra, 128 TYPE_DELBA_SENT, true); 129 } 130 131 return 0; 132 } 133 134 /* 135 * This function handles the command response of add a block 136 * ack request. 137 * 138 * Handling includes changing the header fields to CPU formats, checking 139 * the response success status and taking actions accordingly (delete the 140 * BA stream table in case of failure). 141 */ 142 int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv, 143 struct host_cmd_ds_command *resp) 144 { 145 int tid, tid_down; 146 struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp; 147 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl; 148 struct mwifiex_ra_list_tbl *ra_list; 149 u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set); 150 151 add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn)) 152 & SSN_MASK); 153 154 tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) 155 >> BLOCKACKPARAM_TID_POS; 156 157 tid_down = mwifiex_wmm_downgrade_tid(priv, tid); 158 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, add_ba_rsp-> 159 peer_mac_addr); 160 if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) { 161 if (ra_list) { 162 ra_list->ba_status = BA_SETUP_NONE; 163 ra_list->amsdu_in_ampdu = false; 164 } 165 mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr, 166 TYPE_DELBA_SENT, true); 167 if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT) 168 priv->aggr_prio_tbl[tid].ampdu_ap = 169 BA_STREAM_NOT_ALLOWED; 170 return 0; 171 } 172 173 tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr); 174 if (tx_ba_tbl) { 175 mwifiex_dbg(priv->adapter, EVENT, "info: BA stream complete\n"); 176 tx_ba_tbl->ba_status = BA_SETUP_COMPLETE; 177 if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) && 178 priv->add_ba_param.tx_amsdu && 179 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) 180 tx_ba_tbl->amsdu = true; 181 else 182 tx_ba_tbl->amsdu = false; 183 if (ra_list) { 184 ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu; 185 ra_list->ba_status = BA_SETUP_COMPLETE; 186 } 187 } else { 188 mwifiex_dbg(priv->adapter, ERROR, "BA stream not created\n"); 189 } 190 191 return 0; 192 } 193 194 /* 195 * This function prepares command of reconfigure Tx buffer. 196 * 197 * Preparation includes - 198 * - Setting command ID, action and proper size 199 * - Setting Tx buffer size (for SET only) 200 * - Ensuring correct endian-ness 201 */ 202 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv, 203 struct host_cmd_ds_command *cmd, int cmd_action, 204 u16 *buf_size) 205 { 206 struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf; 207 u16 action = (u16) cmd_action; 208 209 cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF); 210 cmd->size = 211 cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN); 212 tx_buf->action = cpu_to_le16(action); 213 switch (action) { 214 case HostCmd_ACT_GEN_SET: 215 mwifiex_dbg(priv->adapter, CMD, 216 "cmd: set tx_buf=%d\n", *buf_size); 217 tx_buf->buff_size = cpu_to_le16(*buf_size); 218 break; 219 case HostCmd_ACT_GEN_GET: 220 default: 221 tx_buf->buff_size = 0; 222 break; 223 } 224 return 0; 225 } 226 227 /* 228 * This function prepares command of AMSDU aggregation control. 229 * 230 * Preparation includes - 231 * - Setting command ID, action and proper size 232 * - Setting AMSDU control parameters (for SET only) 233 * - Ensuring correct endian-ness 234 */ 235 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd, 236 int cmd_action, 237 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl) 238 { 239 struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl = 240 &cmd->params.amsdu_aggr_ctrl; 241 u16 action = (u16) cmd_action; 242 243 cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL); 244 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl) 245 + S_DS_GEN); 246 amsdu_ctrl->action = cpu_to_le16(action); 247 switch (action) { 248 case HostCmd_ACT_GEN_SET: 249 amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable); 250 amsdu_ctrl->curr_buf_size = 0; 251 break; 252 case HostCmd_ACT_GEN_GET: 253 default: 254 amsdu_ctrl->curr_buf_size = 0; 255 break; 256 } 257 return 0; 258 } 259 260 /* 261 * This function prepares 11n configuration command. 262 * 263 * Preparation includes - 264 * - Setting command ID, action and proper size 265 * - Setting HT Tx capability and HT Tx information fields 266 * - Ensuring correct endian-ness 267 */ 268 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv, 269 struct host_cmd_ds_command *cmd, u16 cmd_action, 270 struct mwifiex_ds_11n_tx_cfg *txcfg) 271 { 272 struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg; 273 274 cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG); 275 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN); 276 htcfg->action = cpu_to_le16(cmd_action); 277 htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap); 278 htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo); 279 280 if (priv->adapter->is_hw_11ac_capable) 281 htcfg->misc_config = cpu_to_le16(txcfg->misc_config); 282 283 return 0; 284 } 285 286 /* 287 * This function appends an 11n TLV to a buffer. 288 * 289 * Buffer allocation is responsibility of the calling 290 * function. No size validation is made here. 291 * 292 * The function fills up the following sections, if applicable - 293 * - HT capability IE 294 * - HT information IE (with channel list) 295 * - 20/40 BSS Coexistence IE 296 * - HT Extended Capabilities IE 297 */ 298 int 299 mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv, 300 struct mwifiex_bssdescriptor *bss_desc, 301 u8 **buffer) 302 { 303 struct mwifiex_ie_types_htcap *ht_cap; 304 struct mwifiex_ie_types_htinfo *ht_info; 305 struct mwifiex_ie_types_chan_list_param_set *chan_list; 306 struct mwifiex_ie_types_2040bssco *bss_co_2040; 307 struct mwifiex_ie_types_extcap *ext_cap; 308 int ret_len = 0; 309 struct ieee80211_supported_band *sband; 310 struct ieee_types_header *hdr; 311 u8 radio_type; 312 313 if (!buffer || !*buffer) 314 return ret_len; 315 316 radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band); 317 sband = priv->wdev.wiphy->bands[radio_type]; 318 319 if (bss_desc->bcn_ht_cap) { 320 ht_cap = (struct mwifiex_ie_types_htcap *) *buffer; 321 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap)); 322 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY); 323 ht_cap->header.len = 324 cpu_to_le16(sizeof(struct ieee80211_ht_cap)); 325 memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header), 326 (u8 *)bss_desc->bcn_ht_cap, 327 le16_to_cpu(ht_cap->header.len)); 328 329 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap); 330 /* Update HT40 capability from current channel information */ 331 if (bss_desc->bcn_ht_oper) { 332 u8 ht_param = bss_desc->bcn_ht_oper->ht_param; 333 u8 radio = 334 mwifiex_band_to_radio_type(bss_desc->bss_band); 335 int freq = 336 ieee80211_channel_to_frequency(bss_desc->channel, 337 radio); 338 struct ieee80211_channel *chan = 339 ieee80211_get_channel(priv->adapter->wiphy, freq); 340 341 switch (ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 342 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 343 if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) { 344 ht_cap->ht_cap.cap_info &= 345 cpu_to_le16 346 (~IEEE80211_HT_CAP_SUP_WIDTH_20_40); 347 ht_cap->ht_cap.cap_info &= 348 cpu_to_le16(~IEEE80211_HT_CAP_SGI_40); 349 } 350 break; 351 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 352 if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) { 353 ht_cap->ht_cap.cap_info &= 354 cpu_to_le16 355 (~IEEE80211_HT_CAP_SUP_WIDTH_20_40); 356 ht_cap->ht_cap.cap_info &= 357 cpu_to_le16(~IEEE80211_HT_CAP_SGI_40); 358 } 359 break; 360 } 361 } 362 363 *buffer += sizeof(struct mwifiex_ie_types_htcap); 364 ret_len += sizeof(struct mwifiex_ie_types_htcap); 365 } 366 367 if (bss_desc->bcn_ht_oper) { 368 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) { 369 ht_info = (struct mwifiex_ie_types_htinfo *) *buffer; 370 memset(ht_info, 0, 371 sizeof(struct mwifiex_ie_types_htinfo)); 372 ht_info->header.type = 373 cpu_to_le16(WLAN_EID_HT_OPERATION); 374 ht_info->header.len = 375 cpu_to_le16( 376 sizeof(struct ieee80211_ht_operation)); 377 378 memcpy((u8 *) ht_info + 379 sizeof(struct mwifiex_ie_types_header), 380 (u8 *)bss_desc->bcn_ht_oper, 381 le16_to_cpu(ht_info->header.len)); 382 383 if (!(sband->ht_cap.cap & 384 IEEE80211_HT_CAP_SUP_WIDTH_20_40)) 385 ht_info->ht_oper.ht_param &= 386 ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY | 387 IEEE80211_HT_PARAM_CHA_SEC_OFFSET); 388 389 *buffer += sizeof(struct mwifiex_ie_types_htinfo); 390 ret_len += sizeof(struct mwifiex_ie_types_htinfo); 391 } 392 393 chan_list = 394 (struct mwifiex_ie_types_chan_list_param_set *) *buffer; 395 memset(chan_list, 0, 396 sizeof(struct mwifiex_ie_types_chan_list_param_set)); 397 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); 398 chan_list->header.len = cpu_to_le16( 399 sizeof(struct mwifiex_ie_types_chan_list_param_set) - 400 sizeof(struct mwifiex_ie_types_header)); 401 chan_list->chan_scan_param[0].chan_number = 402 bss_desc->bcn_ht_oper->primary_chan; 403 chan_list->chan_scan_param[0].radio_type = 404 mwifiex_band_to_radio_type((u8) bss_desc->bss_band); 405 406 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 407 bss_desc->bcn_ht_oper->ht_param & 408 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY) 409 SET_SECONDARYCHAN(chan_list->chan_scan_param[0]. 410 radio_type, 411 (bss_desc->bcn_ht_oper->ht_param & 412 IEEE80211_HT_PARAM_CHA_SEC_OFFSET)); 413 414 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set); 415 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set); 416 } 417 418 if (bss_desc->bcn_bss_co_2040) { 419 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer; 420 memset(bss_co_2040, 0, 421 sizeof(struct mwifiex_ie_types_2040bssco)); 422 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040); 423 bss_co_2040->header.len = 424 cpu_to_le16(sizeof(bss_co_2040->bss_co_2040)); 425 426 memcpy((u8 *) bss_co_2040 + 427 sizeof(struct mwifiex_ie_types_header), 428 bss_desc->bcn_bss_co_2040 + 429 sizeof(struct ieee_types_header), 430 le16_to_cpu(bss_co_2040->header.len)); 431 432 *buffer += sizeof(struct mwifiex_ie_types_2040bssco); 433 ret_len += sizeof(struct mwifiex_ie_types_2040bssco); 434 } 435 436 if (bss_desc->bcn_ext_cap) { 437 hdr = (void *)bss_desc->bcn_ext_cap; 438 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer; 439 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap)); 440 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY); 441 ext_cap->header.len = cpu_to_le16(hdr->len); 442 443 memcpy((u8 *)ext_cap->ext_capab, 444 bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header), 445 le16_to_cpu(ext_cap->header.len)); 446 447 if (hdr->len > 3 && 448 ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED) 449 priv->hs2_enabled = true; 450 else 451 priv->hs2_enabled = false; 452 453 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len; 454 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len; 455 } 456 457 return ret_len; 458 } 459 460 /* 461 * This function checks if the given pointer is valid entry of 462 * Tx BA Stream table. 463 */ 464 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv, 465 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr) 466 { 467 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 468 469 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 470 if (tx_ba_tsr_tbl == tx_tbl_ptr) 471 return true; 472 } 473 474 return false; 475 } 476 477 /* 478 * This function deletes the given entry in Tx BA Stream table. 479 * 480 * The function also performs a validity check on the supplied 481 * pointer before trying to delete. 482 */ 483 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv, 484 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl) 485 { 486 if (!tx_ba_tsr_tbl && 487 mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl)) 488 return; 489 490 mwifiex_dbg(priv->adapter, INFO, 491 "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl); 492 493 list_del(&tx_ba_tsr_tbl->list); 494 495 kfree(tx_ba_tsr_tbl); 496 } 497 498 /* 499 * This function deletes all the entries in Tx BA Stream table. 500 */ 501 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv) 502 { 503 int i; 504 struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node; 505 506 spin_lock_bh(&priv->tx_ba_stream_tbl_lock); 507 list_for_each_entry_safe(del_tbl_ptr, tmp_node, 508 &priv->tx_ba_stream_tbl_ptr, list) 509 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr); 510 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); 511 512 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 513 514 for (i = 0; i < MAX_NUM_TID; ++i) 515 priv->aggr_prio_tbl[i].ampdu_ap = 516 priv->aggr_prio_tbl[i].ampdu_user; 517 } 518 519 /* 520 * This function returns the pointer to an entry in BA Stream 521 * table which matches the given RA/TID pair. 522 */ 523 struct mwifiex_tx_ba_stream_tbl * 524 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra) 525 { 526 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 527 528 spin_lock_bh(&priv->tx_ba_stream_tbl_lock); 529 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 530 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) && 531 tx_ba_tsr_tbl->tid == tid) { 532 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); 533 return tx_ba_tsr_tbl; 534 } 535 } 536 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); 537 return NULL; 538 } 539 540 /* 541 * This function creates an entry in Tx BA stream table for the 542 * given RA/TID pair. 543 */ 544 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid, 545 enum mwifiex_ba_status ba_status) 546 { 547 struct mwifiex_tx_ba_stream_tbl *new_node; 548 struct mwifiex_ra_list_tbl *ra_list; 549 int tid_down; 550 551 if (!mwifiex_get_ba_tbl(priv, tid, ra)) { 552 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl), 553 GFP_ATOMIC); 554 if (!new_node) 555 return; 556 557 tid_down = mwifiex_wmm_downgrade_tid(priv, tid); 558 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra); 559 if (ra_list) { 560 ra_list->ba_status = ba_status; 561 ra_list->amsdu_in_ampdu = false; 562 } 563 INIT_LIST_HEAD(&new_node->list); 564 565 new_node->tid = tid; 566 new_node->ba_status = ba_status; 567 memcpy(new_node->ra, ra, ETH_ALEN); 568 569 spin_lock_bh(&priv->tx_ba_stream_tbl_lock); 570 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr); 571 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); 572 } 573 } 574 575 /* 576 * This function sends an add BA request to the given TID/RA pair. 577 */ 578 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac) 579 { 580 struct host_cmd_ds_11n_addba_req add_ba_req; 581 u32 tx_win_size = priv->add_ba_param.tx_win_size; 582 static u8 dialog_tok; 583 int ret; 584 u16 block_ack_param_set; 585 586 mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid); 587 588 memset(&add_ba_req, 0, sizeof(add_ba_req)); 589 590 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && 591 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && 592 priv->adapter->is_hw_11ac_capable && 593 memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) { 594 struct mwifiex_sta_node *sta_ptr; 595 596 spin_lock_bh(&priv->sta_list_spinlock); 597 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac); 598 if (!sta_ptr) { 599 spin_unlock_bh(&priv->sta_list_spinlock); 600 mwifiex_dbg(priv->adapter, ERROR, 601 "BA setup with unknown TDLS peer %pM!\n", 602 peer_mac); 603 return -1; 604 } 605 if (sta_ptr->is_11ac_enabled) 606 tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE; 607 spin_unlock_bh(&priv->sta_list_spinlock); 608 } 609 610 block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) | 611 tx_win_size << BLOCKACKPARAM_WINSIZE_POS | 612 IMMEDIATE_BLOCK_ACK); 613 614 /* enable AMSDU inside AMPDU */ 615 if (priv->add_ba_param.tx_amsdu && 616 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) 617 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK; 618 619 add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set); 620 add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout); 621 622 ++dialog_tok; 623 624 if (dialog_tok == 0) 625 dialog_tok = 1; 626 627 add_ba_req.dialog_token = dialog_tok; 628 memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN); 629 630 /* We don't wait for the response of this command */ 631 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ, 632 0, 0, &add_ba_req, false); 633 634 return ret; 635 } 636 637 /* 638 * This function sends a delete BA request to the given TID/RA pair. 639 */ 640 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac, 641 int initiator) 642 { 643 struct host_cmd_ds_11n_delba delba; 644 int ret; 645 uint16_t del_ba_param_set; 646 647 memset(&delba, 0, sizeof(delba)); 648 649 del_ba_param_set = tid << DELBA_TID_POS; 650 651 if (initiator) 652 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK; 653 else 654 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK; 655 656 delba.del_ba_param_set = cpu_to_le16(del_ba_param_set); 657 memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN); 658 659 /* We don't wait for the response of this command */ 660 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA, 661 HostCmd_ACT_GEN_SET, 0, &delba, false); 662 663 return ret; 664 } 665 666 /* 667 * This function sends delba to specific tid 668 */ 669 void mwifiex_11n_delba(struct mwifiex_private *priv, int tid) 670 { 671 struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr; 672 673 spin_lock_bh(&priv->rx_reorder_tbl_lock); 674 list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) { 675 if (rx_reor_tbl_ptr->tid == tid) { 676 dev_dbg(priv->adapter->dev, 677 "Send delba to tid=%d, %pM\n", 678 tid, rx_reor_tbl_ptr->ta); 679 mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0); 680 goto exit; 681 } 682 } 683 exit: 684 spin_unlock_bh(&priv->rx_reorder_tbl_lock); 685 } 686 687 /* 688 * This function handles the command response of a delete BA request. 689 */ 690 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba) 691 { 692 struct host_cmd_ds_11n_delba *cmd_del_ba = 693 (struct host_cmd_ds_11n_delba *) del_ba; 694 uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set); 695 int tid; 696 697 tid = del_ba_param_set >> DELBA_TID_POS; 698 699 mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr, 700 TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set)); 701 } 702 703 /* 704 * This function retrieves the Rx reordering table. 705 */ 706 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv, 707 struct mwifiex_ds_rx_reorder_tbl *buf) 708 { 709 int i; 710 struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf; 711 struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr; 712 int count = 0; 713 714 spin_lock_bh(&priv->rx_reorder_tbl_lock); 715 list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr, 716 list) { 717 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid; 718 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN); 719 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win; 720 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size; 721 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) { 722 if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) 723 rx_reo_tbl->buffer[i] = true; 724 else 725 rx_reo_tbl->buffer[i] = false; 726 } 727 rx_reo_tbl++; 728 count++; 729 730 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED) 731 break; 732 } 733 spin_unlock_bh(&priv->rx_reorder_tbl_lock); 734 735 return count; 736 } 737 738 /* 739 * This function retrieves the Tx BA stream table. 740 */ 741 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv, 742 struct mwifiex_ds_tx_ba_stream_tbl *buf) 743 { 744 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 745 struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf; 746 int count = 0; 747 748 spin_lock_bh(&priv->tx_ba_stream_tbl_lock); 749 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 750 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid; 751 mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n", 752 __func__, rx_reo_tbl->tid); 753 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN); 754 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu; 755 rx_reo_tbl++; 756 count++; 757 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) 758 break; 759 } 760 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); 761 762 return count; 763 } 764 765 /* 766 * This function retrieves the entry for specific tx BA stream table by RA and 767 * deletes it. 768 */ 769 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra) 770 { 771 struct mwifiex_tx_ba_stream_tbl *tbl, *tmp; 772 773 if (!ra) 774 return; 775 776 spin_lock_bh(&priv->tx_ba_stream_tbl_lock); 777 list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list) 778 if (!memcmp(tbl->ra, ra, ETH_ALEN)) 779 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl); 780 spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); 781 782 return; 783 } 784 785 /* This function initializes the BlockACK setup information for given 786 * mwifiex_private structure. 787 */ 788 void mwifiex_set_ba_params(struct mwifiex_private *priv) 789 { 790 priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT; 791 792 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { 793 priv->add_ba_param.tx_win_size = 794 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE; 795 priv->add_ba_param.rx_win_size = 796 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE; 797 } else { 798 priv->add_ba_param.tx_win_size = 799 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE; 800 priv->add_ba_param.rx_win_size = 801 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE; 802 } 803 804 priv->add_ba_param.tx_amsdu = true; 805 priv->add_ba_param.rx_amsdu = true; 806 807 return; 808 } 809 810 u8 mwifiex_get_sec_chan_offset(int chan) 811 { 812 u8 sec_offset; 813 814 switch (chan) { 815 case 36: 816 case 44: 817 case 52: 818 case 60: 819 case 100: 820 case 108: 821 case 116: 822 case 124: 823 case 132: 824 case 140: 825 case 149: 826 case 157: 827 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 828 break; 829 case 40: 830 case 48: 831 case 56: 832 case 64: 833 case 104: 834 case 112: 835 case 120: 836 case 128: 837 case 136: 838 case 144: 839 case 153: 840 case 161: 841 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 842 break; 843 case 165: 844 default: 845 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; 846 break; 847 } 848 849 return sec_offset; 850 } 851 852 /* This function will send DELBA to entries in the priv's 853 * Tx BA stream table 854 */ 855 static void 856 mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid) 857 { 858 struct mwifiex_adapter *adapter = priv->adapter; 859 struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr; 860 861 list_for_each_entry(tx_ba_stream_tbl_ptr, 862 &priv->tx_ba_stream_tbl_ptr, list) { 863 if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) { 864 if (tid == tx_ba_stream_tbl_ptr->tid) { 865 dev_dbg(adapter->dev, 866 "Tx:Send delba to tid=%d, %pM\n", tid, 867 tx_ba_stream_tbl_ptr->ra); 868 mwifiex_send_delba(priv, 869 tx_ba_stream_tbl_ptr->tid, 870 tx_ba_stream_tbl_ptr->ra, 1); 871 return; 872 } 873 } 874 } 875 } 876 877 /* This function updates all the tx_win_size 878 */ 879 void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter) 880 { 881 u8 i; 882 u32 tx_win_size; 883 struct mwifiex_private *priv; 884 885 for (i = 0; i < adapter->priv_num; i++) { 886 if (!adapter->priv[i]) 887 continue; 888 priv = adapter->priv[i]; 889 tx_win_size = priv->add_ba_param.tx_win_size; 890 891 if (priv->bss_type == MWIFIEX_BSS_TYPE_STA) 892 priv->add_ba_param.tx_win_size = 893 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE; 894 895 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) 896 priv->add_ba_param.tx_win_size = 897 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE; 898 899 if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) 900 priv->add_ba_param.tx_win_size = 901 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE; 902 903 if (adapter->coex_win_size) { 904 if (adapter->coex_tx_win_size) 905 priv->add_ba_param.tx_win_size = 906 adapter->coex_tx_win_size; 907 } 908 909 if (tx_win_size != priv->add_ba_param.tx_win_size) { 910 if (!priv->media_connected) 911 continue; 912 for (i = 0; i < MAX_NUM_TID; i++) 913 mwifiex_send_delba_txbastream_tbl(priv, i); 914 } 915 } 916 } 917