1/* 2 * Marvell Wireless LAN device driver: 802.11n 3 * 4 * Copyright (C) 2011-2014, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 17 * this warranty disclaimer. 18 */ 19 20#include "decl.h" 21#include "ioctl.h" 22#include "util.h" 23#include "fw.h" 24#include "main.h" 25#include "wmm.h" 26#include "11n.h" 27 28/* 29 * Fills HT capability information field, AMPDU Parameters field, HT extended 30 * capability field, and supported MCS set fields. 31 * 32 * HT capability information field, AMPDU Parameters field, supported MCS set 33 * fields are retrieved from cfg80211 stack 34 * 35 * RD responder bit to set to clear in the extended capability header. 36 */ 37int mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type, 38 struct ieee80211_ht_cap *ht_cap) 39{ 40 uint16_t ht_ext_cap = le16_to_cpu(ht_cap->extended_ht_cap_info); 41 struct ieee80211_supported_band *sband = 42 priv->wdev->wiphy->bands[radio_type]; 43 44 if (WARN_ON_ONCE(!sband)) { 45 dev_err(priv->adapter->dev, "Invalid radio type!\n"); 46 return -EINVAL; 47 } 48 49 ht_cap->ampdu_params_info = 50 (sband->ht_cap.ampdu_factor & 51 IEEE80211_HT_AMPDU_PARM_FACTOR) | 52 ((sband->ht_cap.ampdu_density << 53 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT) & 54 IEEE80211_HT_AMPDU_PARM_DENSITY); 55 56 memcpy((u8 *)&ht_cap->mcs, &sband->ht_cap.mcs, 57 sizeof(sband->ht_cap.mcs)); 58 59 if (priv->bss_mode == NL80211_IFTYPE_STATION || 60 (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 61 (priv->adapter->sec_chan_offset != 62 IEEE80211_HT_PARAM_CHA_SEC_NONE))) 63 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */ 64 SETHT_MCS32(ht_cap->mcs.rx_mask); 65 66 /* Clear RD responder bit */ 67 ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER; 68 69 ht_cap->cap_info = cpu_to_le16(sband->ht_cap.cap); 70 ht_cap->extended_ht_cap_info = cpu_to_le16(ht_ext_cap); 71 72 if (ISSUPP_BEAMFORMING(priv->adapter->hw_dot_11n_dev_cap)) 73 ht_cap->tx_BF_cap_info = cpu_to_le32(MWIFIEX_DEF_11N_TX_BF_CAP); 74 75 return 0; 76} 77 78/* 79 * This function returns the pointer to an entry in BA Stream 80 * table which matches the requested BA status. 81 */ 82static struct mwifiex_tx_ba_stream_tbl * 83mwifiex_get_ba_status(struct mwifiex_private *priv, 84 enum mwifiex_ba_status ba_status) 85{ 86 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 87 unsigned long flags; 88 89 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 90 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 91 if (tx_ba_tsr_tbl->ba_status == ba_status) { 92 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, 93 flags); 94 return tx_ba_tsr_tbl; 95 } 96 } 97 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 98 return NULL; 99} 100 101/* 102 * This function handles the command response of delete a block 103 * ack request. 104 * 105 * The function checks the response success status and takes action 106 * accordingly (send an add BA request in case of success, or recreate 107 * the deleted stream in case of failure, if the add BA was also 108 * initiated by us). 109 */ 110int mwifiex_ret_11n_delba(struct mwifiex_private *priv, 111 struct host_cmd_ds_command *resp) 112{ 113 int tid; 114 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl; 115 struct host_cmd_ds_11n_delba *del_ba = &resp->params.del_ba; 116 uint16_t del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set); 117 118 tid = del_ba_param_set >> DELBA_TID_POS; 119 if (del_ba->del_result == BA_RESULT_SUCCESS) { 120 mwifiex_del_ba_tbl(priv, tid, del_ba->peer_mac_addr, 121 TYPE_DELBA_SENT, 122 INITIATOR_BIT(del_ba_param_set)); 123 124 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS); 125 if (tx_ba_tbl) 126 mwifiex_send_addba(priv, tx_ba_tbl->tid, 127 tx_ba_tbl->ra); 128 } else { /* 129 * In case of failure, recreate the deleted stream in case 130 * we initiated the ADDBA 131 */ 132 if (!INITIATOR_BIT(del_ba_param_set)) 133 return 0; 134 135 mwifiex_create_ba_tbl(priv, del_ba->peer_mac_addr, tid, 136 BA_SETUP_INPROGRESS); 137 138 tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS); 139 140 if (tx_ba_tbl) 141 mwifiex_del_ba_tbl(priv, tx_ba_tbl->tid, tx_ba_tbl->ra, 142 TYPE_DELBA_SENT, true); 143 } 144 145 return 0; 146} 147 148/* 149 * This function handles the command response of add a block 150 * ack request. 151 * 152 * Handling includes changing the header fields to CPU formats, checking 153 * the response success status and taking actions accordingly (delete the 154 * BA stream table in case of failure). 155 */ 156int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv, 157 struct host_cmd_ds_command *resp) 158{ 159 int tid; 160 struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp; 161 struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl; 162 u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set); 163 164 add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn)) 165 & SSN_MASK); 166 167 tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) 168 >> BLOCKACKPARAM_TID_POS; 169 if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) { 170 mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr, 171 TYPE_DELBA_SENT, true); 172 if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT) 173 priv->aggr_prio_tbl[tid].ampdu_ap = 174 BA_STREAM_NOT_ALLOWED; 175 return 0; 176 } 177 178 tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr); 179 if (tx_ba_tbl) { 180 dev_dbg(priv->adapter->dev, "info: BA stream complete\n"); 181 tx_ba_tbl->ba_status = BA_SETUP_COMPLETE; 182 if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) && 183 priv->add_ba_param.tx_amsdu && 184 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) 185 tx_ba_tbl->amsdu = true; 186 else 187 tx_ba_tbl->amsdu = false; 188 } else { 189 dev_err(priv->adapter->dev, "BA stream not created\n"); 190 } 191 192 return 0; 193} 194 195/* 196 * This function prepares command of reconfigure Tx buffer. 197 * 198 * Preparation includes - 199 * - Setting command ID, action and proper size 200 * - Setting Tx buffer size (for SET only) 201 * - Ensuring correct endian-ness 202 */ 203int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv, 204 struct host_cmd_ds_command *cmd, int cmd_action, 205 u16 *buf_size) 206{ 207 struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf; 208 u16 action = (u16) cmd_action; 209 210 cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF); 211 cmd->size = 212 cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN); 213 tx_buf->action = cpu_to_le16(action); 214 switch (action) { 215 case HostCmd_ACT_GEN_SET: 216 dev_dbg(priv->adapter->dev, "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 */ 235int 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 */ 268int 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 */ 298int 299mwifiex_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); 330 331 *buffer += sizeof(struct mwifiex_ie_types_htcap); 332 ret_len += sizeof(struct mwifiex_ie_types_htcap); 333 } 334 335 if (bss_desc->bcn_ht_oper) { 336 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) { 337 ht_info = (struct mwifiex_ie_types_htinfo *) *buffer; 338 memset(ht_info, 0, 339 sizeof(struct mwifiex_ie_types_htinfo)); 340 ht_info->header.type = 341 cpu_to_le16(WLAN_EID_HT_OPERATION); 342 ht_info->header.len = 343 cpu_to_le16( 344 sizeof(struct ieee80211_ht_operation)); 345 346 memcpy((u8 *) ht_info + 347 sizeof(struct mwifiex_ie_types_header), 348 (u8 *)bss_desc->bcn_ht_oper, 349 le16_to_cpu(ht_info->header.len)); 350 351 if (!(sband->ht_cap.cap & 352 IEEE80211_HT_CAP_SUP_WIDTH_20_40)) 353 ht_info->ht_oper.ht_param &= 354 ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY | 355 IEEE80211_HT_PARAM_CHA_SEC_OFFSET); 356 357 *buffer += sizeof(struct mwifiex_ie_types_htinfo); 358 ret_len += sizeof(struct mwifiex_ie_types_htinfo); 359 } 360 361 chan_list = 362 (struct mwifiex_ie_types_chan_list_param_set *) *buffer; 363 memset(chan_list, 0, 364 sizeof(struct mwifiex_ie_types_chan_list_param_set)); 365 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); 366 chan_list->header.len = cpu_to_le16( 367 sizeof(struct mwifiex_ie_types_chan_list_param_set) - 368 sizeof(struct mwifiex_ie_types_header)); 369 chan_list->chan_scan_param[0].chan_number = 370 bss_desc->bcn_ht_oper->primary_chan; 371 chan_list->chan_scan_param[0].radio_type = 372 mwifiex_band_to_radio_type((u8) bss_desc->bss_band); 373 374 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 375 bss_desc->bcn_ht_oper->ht_param & 376 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY) 377 SET_SECONDARYCHAN(chan_list->chan_scan_param[0]. 378 radio_type, 379 (bss_desc->bcn_ht_oper->ht_param & 380 IEEE80211_HT_PARAM_CHA_SEC_OFFSET)); 381 382 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set); 383 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set); 384 } 385 386 if (bss_desc->bcn_bss_co_2040) { 387 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer; 388 memset(bss_co_2040, 0, 389 sizeof(struct mwifiex_ie_types_2040bssco)); 390 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040); 391 bss_co_2040->header.len = 392 cpu_to_le16(sizeof(bss_co_2040->bss_co_2040)); 393 394 memcpy((u8 *) bss_co_2040 + 395 sizeof(struct mwifiex_ie_types_header), 396 bss_desc->bcn_bss_co_2040 + 397 sizeof(struct ieee_types_header), 398 le16_to_cpu(bss_co_2040->header.len)); 399 400 *buffer += sizeof(struct mwifiex_ie_types_2040bssco); 401 ret_len += sizeof(struct mwifiex_ie_types_2040bssco); 402 } 403 404 if (bss_desc->bcn_ext_cap) { 405 hdr = (void *)bss_desc->bcn_ext_cap; 406 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer; 407 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap)); 408 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY); 409 ext_cap->header.len = cpu_to_le16(hdr->len); 410 411 memcpy((u8 *)ext_cap->ext_capab, 412 bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header), 413 le16_to_cpu(ext_cap->header.len)); 414 415 if (hdr->len > 3 && 416 ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED) 417 priv->hs2_enabled = true; 418 else 419 priv->hs2_enabled = false; 420 421 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len; 422 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len; 423 } 424 425 return ret_len; 426} 427 428/* 429 * This function checks if the given pointer is valid entry of 430 * Tx BA Stream table. 431 */ 432static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv, 433 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr) 434{ 435 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 436 437 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 438 if (tx_ba_tsr_tbl == tx_tbl_ptr) 439 return true; 440 } 441 442 return false; 443} 444 445/* 446 * This function deletes the given entry in Tx BA Stream table. 447 * 448 * The function also performs a validity check on the supplied 449 * pointer before trying to delete. 450 */ 451void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv, 452 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl) 453{ 454 if (!tx_ba_tsr_tbl && 455 mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl)) 456 return; 457 458 dev_dbg(priv->adapter->dev, "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl); 459 460 list_del(&tx_ba_tsr_tbl->list); 461 462 kfree(tx_ba_tsr_tbl); 463} 464 465/* 466 * This function deletes all the entries in Tx BA Stream table. 467 */ 468void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv) 469{ 470 int i; 471 struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node; 472 unsigned long flags; 473 474 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 475 list_for_each_entry_safe(del_tbl_ptr, tmp_node, 476 &priv->tx_ba_stream_tbl_ptr, list) 477 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr); 478 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 479 480 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 481 482 for (i = 0; i < MAX_NUM_TID; ++i) 483 priv->aggr_prio_tbl[i].ampdu_ap = 484 priv->aggr_prio_tbl[i].ampdu_user; 485} 486 487/* 488 * This function returns the pointer to an entry in BA Stream 489 * table which matches the given RA/TID pair. 490 */ 491struct mwifiex_tx_ba_stream_tbl * 492mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra) 493{ 494 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 495 unsigned long flags; 496 497 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 498 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 499 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) && 500 tx_ba_tsr_tbl->tid == tid) { 501 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, 502 flags); 503 return tx_ba_tsr_tbl; 504 } 505 } 506 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 507 return NULL; 508} 509 510/* 511 * This function creates an entry in Tx BA stream table for the 512 * given RA/TID pair. 513 */ 514void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid, 515 enum mwifiex_ba_status ba_status) 516{ 517 struct mwifiex_tx_ba_stream_tbl *new_node; 518 unsigned long flags; 519 520 if (!mwifiex_get_ba_tbl(priv, tid, ra)) { 521 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl), 522 GFP_ATOMIC); 523 if (!new_node) 524 return; 525 526 INIT_LIST_HEAD(&new_node->list); 527 528 new_node->tid = tid; 529 new_node->ba_status = ba_status; 530 memcpy(new_node->ra, ra, ETH_ALEN); 531 532 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 533 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr); 534 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 535 } 536} 537 538/* 539 * This function sends an add BA request to the given TID/RA pair. 540 */ 541int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac) 542{ 543 struct host_cmd_ds_11n_addba_req add_ba_req; 544 u32 tx_win_size = priv->add_ba_param.tx_win_size; 545 static u8 dialog_tok; 546 int ret; 547 u16 block_ack_param_set; 548 549 dev_dbg(priv->adapter->dev, "cmd: %s: tid %d\n", __func__, tid); 550 551 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && 552 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && 553 priv->adapter->is_hw_11ac_capable && 554 memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) { 555 struct mwifiex_sta_node *sta_ptr; 556 557 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac); 558 if (!sta_ptr) { 559 dev_warn(priv->adapter->dev, 560 "BA setup with unknown TDLS peer %pM!\n", 561 peer_mac); 562 return -1; 563 } 564 if (sta_ptr->is_11ac_enabled) 565 tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE; 566 } 567 568 block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) | 569 tx_win_size << BLOCKACKPARAM_WINSIZE_POS | 570 IMMEDIATE_BLOCK_ACK); 571 572 /* enable AMSDU inside AMPDU */ 573 if (priv->add_ba_param.tx_amsdu && 574 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) 575 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK; 576 577 add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set); 578 add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout); 579 580 ++dialog_tok; 581 582 if (dialog_tok == 0) 583 dialog_tok = 1; 584 585 add_ba_req.dialog_token = dialog_tok; 586 memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN); 587 588 /* We don't wait for the response of this command */ 589 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ, 590 0, 0, &add_ba_req, false); 591 592 return ret; 593} 594 595/* 596 * This function sends a delete BA request to the given TID/RA pair. 597 */ 598int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac, 599 int initiator) 600{ 601 struct host_cmd_ds_11n_delba delba; 602 int ret; 603 uint16_t del_ba_param_set; 604 605 memset(&delba, 0, sizeof(delba)); 606 delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS); 607 608 del_ba_param_set = le16_to_cpu(delba.del_ba_param_set); 609 if (initiator) 610 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK; 611 else 612 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK; 613 614 memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN); 615 616 /* We don't wait for the response of this command */ 617 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA, 618 HostCmd_ACT_GEN_SET, 0, &delba, false); 619 620 return ret; 621} 622 623/* 624 * This function handles the command response of a delete BA request. 625 */ 626void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba) 627{ 628 struct host_cmd_ds_11n_delba *cmd_del_ba = 629 (struct host_cmd_ds_11n_delba *) del_ba; 630 uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set); 631 int tid; 632 633 tid = del_ba_param_set >> DELBA_TID_POS; 634 635 mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr, 636 TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set)); 637} 638 639/* 640 * This function retrieves the Rx reordering table. 641 */ 642int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv, 643 struct mwifiex_ds_rx_reorder_tbl *buf) 644{ 645 int i; 646 struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf; 647 struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr; 648 int count = 0; 649 unsigned long flags; 650 651 spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); 652 list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr, 653 list) { 654 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid; 655 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN); 656 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win; 657 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size; 658 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) { 659 if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) 660 rx_reo_tbl->buffer[i] = true; 661 else 662 rx_reo_tbl->buffer[i] = false; 663 } 664 rx_reo_tbl++; 665 count++; 666 667 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED) 668 break; 669 } 670 spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); 671 672 return count; 673} 674 675/* 676 * This function retrieves the Tx BA stream table. 677 */ 678int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv, 679 struct mwifiex_ds_tx_ba_stream_tbl *buf) 680{ 681 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 682 struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf; 683 int count = 0; 684 unsigned long flags; 685 686 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 687 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 688 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid; 689 dev_dbg(priv->adapter->dev, "data: %s tid=%d\n", 690 __func__, rx_reo_tbl->tid); 691 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN); 692 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu; 693 rx_reo_tbl++; 694 count++; 695 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) 696 break; 697 } 698 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 699 700 return count; 701} 702 703/* 704 * This function retrieves the entry for specific tx BA stream table by RA and 705 * deletes it. 706 */ 707void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra) 708{ 709 struct mwifiex_tx_ba_stream_tbl *tbl, *tmp; 710 unsigned long flags; 711 712 if (!ra) 713 return; 714 715 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 716 list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list) { 717 if (!memcmp(tbl->ra, ra, ETH_ALEN)) { 718 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, 719 flags); 720 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl); 721 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 722 } 723 } 724 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 725 726 return; 727} 728 729/* This function initializes the BlockACK setup information for given 730 * mwifiex_private structure. 731 */ 732void mwifiex_set_ba_params(struct mwifiex_private *priv) 733{ 734 priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT; 735 736 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { 737 priv->add_ba_param.tx_win_size = 738 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE; 739 priv->add_ba_param.rx_win_size = 740 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE; 741 } else { 742 priv->add_ba_param.tx_win_size = 743 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE; 744 priv->add_ba_param.rx_win_size = 745 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE; 746 } 747 748 priv->add_ba_param.tx_amsdu = true; 749 priv->add_ba_param.rx_amsdu = true; 750 751 return; 752} 753 754u8 mwifiex_get_sec_chan_offset(int chan) 755{ 756 u8 sec_offset; 757 758 switch (chan) { 759 case 36: 760 case 44: 761 case 52: 762 case 60: 763 case 100: 764 case 108: 765 case 116: 766 case 124: 767 case 132: 768 case 140: 769 case 149: 770 case 157: 771 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 772 break; 773 case 40: 774 case 48: 775 case 56: 776 case 64: 777 case 104: 778 case 112: 779 case 120: 780 case 128: 781 case 136: 782 case 144: 783 case 153: 784 case 161: 785 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 786 break; 787 case 165: 788 default: 789 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; 790 break; 791 } 792 793 return sec_offset; 794} 795