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 struct mwifiex_ra_list_tbl *ra_list; 163 u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set); 164 165 add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn)) 166 & SSN_MASK); 167 168 tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) 169 >> BLOCKACKPARAM_TID_POS; 170 ra_list = mwifiex_wmm_get_ralist_node(priv, tid, add_ba_rsp-> 171 peer_mac_addr); 172 if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) { 173 if (ra_list) { 174 ra_list->ba_status = BA_SETUP_NONE; 175 ra_list->amsdu_in_ampdu = false; 176 } 177 mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr, 178 TYPE_DELBA_SENT, true); 179 if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT) 180 priv->aggr_prio_tbl[tid].ampdu_ap = 181 BA_STREAM_NOT_ALLOWED; 182 return 0; 183 } 184 185 tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr); 186 if (tx_ba_tbl) { 187 dev_dbg(priv->adapter->dev, "info: BA stream complete\n"); 188 tx_ba_tbl->ba_status = BA_SETUP_COMPLETE; 189 if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) && 190 priv->add_ba_param.tx_amsdu && 191 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) 192 tx_ba_tbl->amsdu = true; 193 else 194 tx_ba_tbl->amsdu = false; 195 if (ra_list) { 196 ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu; 197 ra_list->ba_status = BA_SETUP_COMPLETE; 198 } 199 } else { 200 dev_err(priv->adapter->dev, "BA stream not created\n"); 201 } 202 203 return 0; 204} 205 206/* 207 * This function prepares command of reconfigure Tx buffer. 208 * 209 * Preparation includes - 210 * - Setting command ID, action and proper size 211 * - Setting Tx buffer size (for SET only) 212 * - Ensuring correct endian-ness 213 */ 214int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv, 215 struct host_cmd_ds_command *cmd, int cmd_action, 216 u16 *buf_size) 217{ 218 struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf; 219 u16 action = (u16) cmd_action; 220 221 cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF); 222 cmd->size = 223 cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN); 224 tx_buf->action = cpu_to_le16(action); 225 switch (action) { 226 case HostCmd_ACT_GEN_SET: 227 dev_dbg(priv->adapter->dev, "cmd: set tx_buf=%d\n", *buf_size); 228 tx_buf->buff_size = cpu_to_le16(*buf_size); 229 break; 230 case HostCmd_ACT_GEN_GET: 231 default: 232 tx_buf->buff_size = 0; 233 break; 234 } 235 return 0; 236} 237 238/* 239 * This function prepares command of AMSDU aggregation control. 240 * 241 * Preparation includes - 242 * - Setting command ID, action and proper size 243 * - Setting AMSDU control parameters (for SET only) 244 * - Ensuring correct endian-ness 245 */ 246int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd, 247 int cmd_action, 248 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl) 249{ 250 struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl = 251 &cmd->params.amsdu_aggr_ctrl; 252 u16 action = (u16) cmd_action; 253 254 cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL); 255 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl) 256 + S_DS_GEN); 257 amsdu_ctrl->action = cpu_to_le16(action); 258 switch (action) { 259 case HostCmd_ACT_GEN_SET: 260 amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable); 261 amsdu_ctrl->curr_buf_size = 0; 262 break; 263 case HostCmd_ACT_GEN_GET: 264 default: 265 amsdu_ctrl->curr_buf_size = 0; 266 break; 267 } 268 return 0; 269} 270 271/* 272 * This function prepares 11n configuration command. 273 * 274 * Preparation includes - 275 * - Setting command ID, action and proper size 276 * - Setting HT Tx capability and HT Tx information fields 277 * - Ensuring correct endian-ness 278 */ 279int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv, 280 struct host_cmd_ds_command *cmd, u16 cmd_action, 281 struct mwifiex_ds_11n_tx_cfg *txcfg) 282{ 283 struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg; 284 285 cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG); 286 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN); 287 htcfg->action = cpu_to_le16(cmd_action); 288 htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap); 289 htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo); 290 291 if (priv->adapter->is_hw_11ac_capable) 292 htcfg->misc_config = cpu_to_le16(txcfg->misc_config); 293 294 return 0; 295} 296 297/* 298 * This function appends an 11n TLV to a buffer. 299 * 300 * Buffer allocation is responsibility of the calling 301 * function. No size validation is made here. 302 * 303 * The function fills up the following sections, if applicable - 304 * - HT capability IE 305 * - HT information IE (with channel list) 306 * - 20/40 BSS Coexistence IE 307 * - HT Extended Capabilities IE 308 */ 309int 310mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv, 311 struct mwifiex_bssdescriptor *bss_desc, 312 u8 **buffer) 313{ 314 struct mwifiex_ie_types_htcap *ht_cap; 315 struct mwifiex_ie_types_htinfo *ht_info; 316 struct mwifiex_ie_types_chan_list_param_set *chan_list; 317 struct mwifiex_ie_types_2040bssco *bss_co_2040; 318 struct mwifiex_ie_types_extcap *ext_cap; 319 int ret_len = 0; 320 struct ieee80211_supported_band *sband; 321 struct ieee_types_header *hdr; 322 u8 radio_type; 323 324 if (!buffer || !*buffer) 325 return ret_len; 326 327 radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band); 328 sband = priv->wdev.wiphy->bands[radio_type]; 329 330 if (bss_desc->bcn_ht_cap) { 331 ht_cap = (struct mwifiex_ie_types_htcap *) *buffer; 332 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap)); 333 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY); 334 ht_cap->header.len = 335 cpu_to_le16(sizeof(struct ieee80211_ht_cap)); 336 memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header), 337 (u8 *)bss_desc->bcn_ht_cap, 338 le16_to_cpu(ht_cap->header.len)); 339 340 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap); 341 342 *buffer += sizeof(struct mwifiex_ie_types_htcap); 343 ret_len += sizeof(struct mwifiex_ie_types_htcap); 344 } 345 346 if (bss_desc->bcn_ht_oper) { 347 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) { 348 ht_info = (struct mwifiex_ie_types_htinfo *) *buffer; 349 memset(ht_info, 0, 350 sizeof(struct mwifiex_ie_types_htinfo)); 351 ht_info->header.type = 352 cpu_to_le16(WLAN_EID_HT_OPERATION); 353 ht_info->header.len = 354 cpu_to_le16( 355 sizeof(struct ieee80211_ht_operation)); 356 357 memcpy((u8 *) ht_info + 358 sizeof(struct mwifiex_ie_types_header), 359 (u8 *)bss_desc->bcn_ht_oper, 360 le16_to_cpu(ht_info->header.len)); 361 362 if (!(sband->ht_cap.cap & 363 IEEE80211_HT_CAP_SUP_WIDTH_20_40)) 364 ht_info->ht_oper.ht_param &= 365 ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY | 366 IEEE80211_HT_PARAM_CHA_SEC_OFFSET); 367 368 *buffer += sizeof(struct mwifiex_ie_types_htinfo); 369 ret_len += sizeof(struct mwifiex_ie_types_htinfo); 370 } 371 372 chan_list = 373 (struct mwifiex_ie_types_chan_list_param_set *) *buffer; 374 memset(chan_list, 0, 375 sizeof(struct mwifiex_ie_types_chan_list_param_set)); 376 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); 377 chan_list->header.len = cpu_to_le16( 378 sizeof(struct mwifiex_ie_types_chan_list_param_set) - 379 sizeof(struct mwifiex_ie_types_header)); 380 chan_list->chan_scan_param[0].chan_number = 381 bss_desc->bcn_ht_oper->primary_chan; 382 chan_list->chan_scan_param[0].radio_type = 383 mwifiex_band_to_radio_type((u8) bss_desc->bss_band); 384 385 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 386 bss_desc->bcn_ht_oper->ht_param & 387 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY) 388 SET_SECONDARYCHAN(chan_list->chan_scan_param[0]. 389 radio_type, 390 (bss_desc->bcn_ht_oper->ht_param & 391 IEEE80211_HT_PARAM_CHA_SEC_OFFSET)); 392 393 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set); 394 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set); 395 } 396 397 if (bss_desc->bcn_bss_co_2040) { 398 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer; 399 memset(bss_co_2040, 0, 400 sizeof(struct mwifiex_ie_types_2040bssco)); 401 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040); 402 bss_co_2040->header.len = 403 cpu_to_le16(sizeof(bss_co_2040->bss_co_2040)); 404 405 memcpy((u8 *) bss_co_2040 + 406 sizeof(struct mwifiex_ie_types_header), 407 bss_desc->bcn_bss_co_2040 + 408 sizeof(struct ieee_types_header), 409 le16_to_cpu(bss_co_2040->header.len)); 410 411 *buffer += sizeof(struct mwifiex_ie_types_2040bssco); 412 ret_len += sizeof(struct mwifiex_ie_types_2040bssco); 413 } 414 415 if (bss_desc->bcn_ext_cap) { 416 hdr = (void *)bss_desc->bcn_ext_cap; 417 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer; 418 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap)); 419 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY); 420 ext_cap->header.len = cpu_to_le16(hdr->len); 421 422 memcpy((u8 *)ext_cap->ext_capab, 423 bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header), 424 le16_to_cpu(ext_cap->header.len)); 425 426 if (hdr->len > 3 && 427 ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED) 428 priv->hs2_enabled = true; 429 else 430 priv->hs2_enabled = false; 431 432 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len; 433 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len; 434 } 435 436 return ret_len; 437} 438 439/* 440 * This function checks if the given pointer is valid entry of 441 * Tx BA Stream table. 442 */ 443static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv, 444 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr) 445{ 446 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 447 448 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 449 if (tx_ba_tsr_tbl == tx_tbl_ptr) 450 return true; 451 } 452 453 return false; 454} 455 456/* 457 * This function deletes the given entry in Tx BA Stream table. 458 * 459 * The function also performs a validity check on the supplied 460 * pointer before trying to delete. 461 */ 462void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv, 463 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl) 464{ 465 if (!tx_ba_tsr_tbl && 466 mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl)) 467 return; 468 469 dev_dbg(priv->adapter->dev, "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl); 470 471 list_del(&tx_ba_tsr_tbl->list); 472 473 kfree(tx_ba_tsr_tbl); 474} 475 476/* 477 * This function deletes all the entries in Tx BA Stream table. 478 */ 479void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv) 480{ 481 int i; 482 struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node; 483 unsigned long flags; 484 485 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 486 list_for_each_entry_safe(del_tbl_ptr, tmp_node, 487 &priv->tx_ba_stream_tbl_ptr, list) 488 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr); 489 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 490 491 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 492 493 for (i = 0; i < MAX_NUM_TID; ++i) 494 priv->aggr_prio_tbl[i].ampdu_ap = 495 priv->aggr_prio_tbl[i].ampdu_user; 496} 497 498/* 499 * This function returns the pointer to an entry in BA Stream 500 * table which matches the given RA/TID pair. 501 */ 502struct mwifiex_tx_ba_stream_tbl * 503mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra) 504{ 505 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 506 unsigned long flags; 507 508 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 509 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 510 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) && 511 tx_ba_tsr_tbl->tid == tid) { 512 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, 513 flags); 514 return tx_ba_tsr_tbl; 515 } 516 } 517 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 518 return NULL; 519} 520 521/* 522 * This function creates an entry in Tx BA stream table for the 523 * given RA/TID pair. 524 */ 525void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid, 526 enum mwifiex_ba_status ba_status) 527{ 528 struct mwifiex_tx_ba_stream_tbl *new_node; 529 struct mwifiex_ra_list_tbl *ra_list; 530 unsigned long flags; 531 532 if (!mwifiex_get_ba_tbl(priv, tid, ra)) { 533 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl), 534 GFP_ATOMIC); 535 if (!new_node) 536 return; 537 ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra); 538 if (ra_list) { 539 ra_list->ba_status = ba_status; 540 ra_list->amsdu_in_ampdu = false; 541 } 542 INIT_LIST_HEAD(&new_node->list); 543 544 new_node->tid = tid; 545 new_node->ba_status = ba_status; 546 memcpy(new_node->ra, ra, ETH_ALEN); 547 548 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 549 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr); 550 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 551 } 552} 553 554/* 555 * This function sends an add BA request to the given TID/RA pair. 556 */ 557int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac) 558{ 559 struct host_cmd_ds_11n_addba_req add_ba_req; 560 u32 tx_win_size = priv->add_ba_param.tx_win_size; 561 static u8 dialog_tok; 562 int ret; 563 unsigned long flags; 564 u16 block_ack_param_set; 565 566 dev_dbg(priv->adapter->dev, "cmd: %s: tid %d\n", __func__, tid); 567 568 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && 569 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && 570 priv->adapter->is_hw_11ac_capable && 571 memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) { 572 struct mwifiex_sta_node *sta_ptr; 573 574 spin_lock_irqsave(&priv->sta_list_spinlock, flags); 575 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac); 576 if (!sta_ptr) { 577 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); 578 dev_warn(priv->adapter->dev, 579 "BA setup with unknown TDLS peer %pM!\n", 580 peer_mac); 581 return -1; 582 } 583 if (sta_ptr->is_11ac_enabled) 584 tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE; 585 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); 586 } 587 588 block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) | 589 tx_win_size << BLOCKACKPARAM_WINSIZE_POS | 590 IMMEDIATE_BLOCK_ACK); 591 592 /* enable AMSDU inside AMPDU */ 593 if (priv->add_ba_param.tx_amsdu && 594 (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) 595 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK; 596 597 add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set); 598 add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout); 599 600 ++dialog_tok; 601 602 if (dialog_tok == 0) 603 dialog_tok = 1; 604 605 add_ba_req.dialog_token = dialog_tok; 606 memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN); 607 608 /* We don't wait for the response of this command */ 609 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ, 610 0, 0, &add_ba_req, false); 611 612 return ret; 613} 614 615/* 616 * This function sends a delete BA request to the given TID/RA pair. 617 */ 618int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac, 619 int initiator) 620{ 621 struct host_cmd_ds_11n_delba delba; 622 int ret; 623 uint16_t del_ba_param_set; 624 625 memset(&delba, 0, sizeof(delba)); 626 delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS); 627 628 del_ba_param_set = le16_to_cpu(delba.del_ba_param_set); 629 if (initiator) 630 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK; 631 else 632 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK; 633 634 memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN); 635 636 /* We don't wait for the response of this command */ 637 ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA, 638 HostCmd_ACT_GEN_SET, 0, &delba, false); 639 640 return ret; 641} 642 643/* 644 * This function handles the command response of a delete BA request. 645 */ 646void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba) 647{ 648 struct host_cmd_ds_11n_delba *cmd_del_ba = 649 (struct host_cmd_ds_11n_delba *) del_ba; 650 uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set); 651 int tid; 652 653 tid = del_ba_param_set >> DELBA_TID_POS; 654 655 mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr, 656 TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set)); 657} 658 659/* 660 * This function retrieves the Rx reordering table. 661 */ 662int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv, 663 struct mwifiex_ds_rx_reorder_tbl *buf) 664{ 665 int i; 666 struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf; 667 struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr; 668 int count = 0; 669 unsigned long flags; 670 671 spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); 672 list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr, 673 list) { 674 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid; 675 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN); 676 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win; 677 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size; 678 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) { 679 if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) 680 rx_reo_tbl->buffer[i] = true; 681 else 682 rx_reo_tbl->buffer[i] = false; 683 } 684 rx_reo_tbl++; 685 count++; 686 687 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED) 688 break; 689 } 690 spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); 691 692 return count; 693} 694 695/* 696 * This function retrieves the Tx BA stream table. 697 */ 698int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv, 699 struct mwifiex_ds_tx_ba_stream_tbl *buf) 700{ 701 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl; 702 struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf; 703 int count = 0; 704 unsigned long flags; 705 706 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 707 list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { 708 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid; 709 dev_dbg(priv->adapter->dev, "data: %s tid=%d\n", 710 __func__, rx_reo_tbl->tid); 711 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN); 712 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu; 713 rx_reo_tbl++; 714 count++; 715 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) 716 break; 717 } 718 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 719 720 return count; 721} 722 723/* 724 * This function retrieves the entry for specific tx BA stream table by RA and 725 * deletes it. 726 */ 727void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra) 728{ 729 struct mwifiex_tx_ba_stream_tbl *tbl, *tmp; 730 unsigned long flags; 731 732 if (!ra) 733 return; 734 735 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 736 list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list) { 737 if (!memcmp(tbl->ra, ra, ETH_ALEN)) { 738 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, 739 flags); 740 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl); 741 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); 742 } 743 } 744 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); 745 746 return; 747} 748 749/* This function initializes the BlockACK setup information for given 750 * mwifiex_private structure. 751 */ 752void mwifiex_set_ba_params(struct mwifiex_private *priv) 753{ 754 priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT; 755 756 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { 757 priv->add_ba_param.tx_win_size = 758 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE; 759 priv->add_ba_param.rx_win_size = 760 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE; 761 } else { 762 priv->add_ba_param.tx_win_size = 763 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE; 764 priv->add_ba_param.rx_win_size = 765 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE; 766 } 767 768 priv->add_ba_param.tx_amsdu = true; 769 priv->add_ba_param.rx_amsdu = true; 770 771 return; 772} 773 774u8 mwifiex_get_sec_chan_offset(int chan) 775{ 776 u8 sec_offset; 777 778 switch (chan) { 779 case 36: 780 case 44: 781 case 52: 782 case 60: 783 case 100: 784 case 108: 785 case 116: 786 case 124: 787 case 132: 788 case 140: 789 case 149: 790 case 157: 791 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 792 break; 793 case 40: 794 case 48: 795 case 56: 796 case 64: 797 case 104: 798 case 112: 799 case 120: 800 case 128: 801 case 136: 802 case 144: 803 case 153: 804 case 161: 805 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 806 break; 807 case 165: 808 default: 809 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; 810 break; 811 } 812 813 return sec_offset; 814} 815