kernel/drivers/net/wireless/mwifiex/11n.c

   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  */
  37 int 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  */
  82 static struct mwifiex_tx_ba_stream_tbl *
  83 mwifiex_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  */
 110 int 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  */
 156 int 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  */
 214 int 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  */
 246 int 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  */
 279 int 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  */
 309 int
 310 mwifiex_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  */
 443 static 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  */
 462 void 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  */
 479 void 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  */
 502 struct mwifiex_tx_ba_stream_tbl *
 503 mwifiex_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  */
 525 void 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  */
 557 int 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  */
 618 int 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  */
 646 void 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  */
 662 int 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  */
 698 int 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  */
 727 void 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  */
 752 void 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
 774 u8 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 }