drivers/net/wireless/marvell/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                 mwifiex_dbg(priv->adapter, ERROR, "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, tid_down;
 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
 171         tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
 172         ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, add_ba_rsp->
 173                 peer_mac_addr);
 174         if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) {
 175                 if (ra_list) {
 176                         ra_list->ba_status = BA_SETUP_NONE;
 177                         ra_list->amsdu_in_ampdu = false;
 178                 }
 179                 mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr,
 180                                    TYPE_DELBA_SENT, true);
 181                 if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT)
 182                         priv->aggr_prio_tbl[tid].ampdu_ap =
 183                                 BA_STREAM_NOT_ALLOWED;
 184                 return 0;
 185         }
 186
 187         tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr);
 188         if (tx_ba_tbl) {
 189                 mwifiex_dbg(priv->adapter, EVENT, "info: BA stream complete\n");
 190                 tx_ba_tbl->ba_status = BA_SETUP_COMPLETE;
 191                 if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) &&
 192                     priv->add_ba_param.tx_amsdu &&
 193                     (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
 194                         tx_ba_tbl->amsdu = true;
 195                 else
 196                         tx_ba_tbl->amsdu = false;
 197                 if (ra_list) {
 198                         ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu;
 199                         ra_list->ba_status = BA_SETUP_COMPLETE;
 200                 }
 201         } else {
 202                 mwifiex_dbg(priv->adapter, ERROR, "BA stream not created\n");
 203         }
 204
 205         return 0;
 206 }
 207
 208 /*
 209  * This function prepares command of reconfigure Tx buffer.
 210  *
 211  * Preparation includes -
 212  *      - Setting command ID, action and proper size
 213  *      - Setting Tx buffer size (for SET only)
 214  *      - Ensuring correct endian-ness
 215  */
 216 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
 217                              struct host_cmd_ds_command *cmd, int cmd_action,
 218                              u16 *buf_size)
 219 {
 220         struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf;
 221         u16 action = (u16) cmd_action;
 222
 223         cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF);
 224         cmd->size =
 225                 cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN);
 226         tx_buf->action = cpu_to_le16(action);
 227         switch (action) {
 228         case HostCmd_ACT_GEN_SET:
 229                 mwifiex_dbg(priv->adapter, CMD,
 230                             "cmd: set tx_buf=%d\n", *buf_size);
 231                 tx_buf->buff_size = cpu_to_le16(*buf_size);
 232                 break;
 233         case HostCmd_ACT_GEN_GET:
 234         default:
 235                 tx_buf->buff_size = 0;
 236                 break;
 237         }
 238         return 0;
 239 }
 240
 241 /*
 242  * This function prepares command of AMSDU aggregation control.
 243  *
 244  * Preparation includes -
 245  *      - Setting command ID, action and proper size
 246  *      - Setting AMSDU control parameters (for SET only)
 247  *      - Ensuring correct endian-ness
 248  */
 249 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
 250                                 int cmd_action,
 251                                 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
 252 {
 253         struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
 254                 &cmd->params.amsdu_aggr_ctrl;
 255         u16 action = (u16) cmd_action;
 256
 257         cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL);
 258         cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl)
 259                                 + S_DS_GEN);
 260         amsdu_ctrl->action = cpu_to_le16(action);
 261         switch (action) {
 262         case HostCmd_ACT_GEN_SET:
 263                 amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable);
 264                 amsdu_ctrl->curr_buf_size = 0;
 265                 break;
 266         case HostCmd_ACT_GEN_GET:
 267         default:
 268                 amsdu_ctrl->curr_buf_size = 0;
 269                 break;
 270         }
 271         return 0;
 272 }
 273
 274 /*
 275  * This function prepares 11n configuration command.
 276  *
 277  * Preparation includes -
 278  *      - Setting command ID, action and proper size
 279  *      - Setting HT Tx capability and HT Tx information fields
 280  *      - Ensuring correct endian-ness
 281  */
 282 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
 283                         struct host_cmd_ds_command *cmd, u16 cmd_action,
 284                         struct mwifiex_ds_11n_tx_cfg *txcfg)
 285 {
 286         struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
 287
 288         cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG);
 289         cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN);
 290         htcfg->action = cpu_to_le16(cmd_action);
 291         htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap);
 292         htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo);
 293
 294         if (priv->adapter->is_hw_11ac_capable)
 295                 htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
 296
 297         return 0;
 298 }
 299
 300 /*
 301  * This function appends an 11n TLV to a buffer.
 302  *
 303  * Buffer allocation is responsibility of the calling
 304  * function. No size validation is made here.
 305  *
 306  * The function fills up the following sections, if applicable -
 307  *      - HT capability IE
 308  *      - HT information IE (with channel list)
 309  *      - 20/40 BSS Coexistence IE
 310  *      - HT Extended Capabilities IE
 311  */
 312 int
 313 mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
 314                            struct mwifiex_bssdescriptor *bss_desc,
 315                            u8 **buffer)
 316 {
 317         struct mwifiex_ie_types_htcap *ht_cap;
 318         struct mwifiex_ie_types_htinfo *ht_info;
 319         struct mwifiex_ie_types_chan_list_param_set *chan_list;
 320         struct mwifiex_ie_types_2040bssco *bss_co_2040;
 321         struct mwifiex_ie_types_extcap *ext_cap;
 322         int ret_len = 0;
 323         struct ieee80211_supported_band *sband;
 324         struct ieee_types_header *hdr;
 325         u8 radio_type;
 326
 327         if (!buffer || !*buffer)
 328                 return ret_len;
 329
 330         radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
 331         sband = priv->wdev.wiphy->bands[radio_type];
 332
 333         if (bss_desc->bcn_ht_cap) {
 334                 ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
 335                 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
 336                 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
 337                 ht_cap->header.len =
 338                                 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
 339                 memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header),
 340                        (u8 *)bss_desc->bcn_ht_cap,
 341                        le16_to_cpu(ht_cap->header.len));
 342
 343                 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
 344                 /* Update HT40 capability from current channel information */
 345                 if (bss_desc->bcn_ht_oper) {
 346                         u8 ht_param = bss_desc->bcn_ht_oper->ht_param;
 347                         u8 radio =
 348                         mwifiex_band_to_radio_type(bss_desc->bss_band);
 349                         int freq =
 350                         ieee80211_channel_to_frequency(bss_desc->channel,
 351                                                        radio);
 352                         struct ieee80211_channel *chan =
 353                         ieee80211_get_channel(priv->adapter->wiphy, freq);
 354
 355                         switch (ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
 356                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 357                                 if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) {
 358                                         ht_cap->ht_cap.cap_info &=
 359                                         cpu_to_le16
 360                                         (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 361                                         ht_cap->ht_cap.cap_info &=
 362                                         cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
 363                                 }
 364                                 break;
 365                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 366                                 if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) {
 367                                         ht_cap->ht_cap.cap_info &=
 368                                         cpu_to_le16
 369                                         (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 370                                         ht_cap->ht_cap.cap_info &=
 371                                         cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
 372                                 }
 373                                 break;
 374                         }
 375                 }
 376
 377                 *buffer += sizeof(struct mwifiex_ie_types_htcap);
 378                 ret_len += sizeof(struct mwifiex_ie_types_htcap);
 379         }
 380
 381         if (bss_desc->bcn_ht_oper) {
 382                 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 383                         ht_info = (struct mwifiex_ie_types_htinfo *) *buffer;
 384                         memset(ht_info, 0,
 385                                sizeof(struct mwifiex_ie_types_htinfo));
 386                         ht_info->header.type =
 387                                         cpu_to_le16(WLAN_EID_HT_OPERATION);
 388                         ht_info->header.len =
 389                                 cpu_to_le16(
 390                                         sizeof(struct ieee80211_ht_operation));
 391
 392                         memcpy((u8 *) ht_info +
 393                                sizeof(struct mwifiex_ie_types_header),
 394                                (u8 *)bss_desc->bcn_ht_oper,
 395                                le16_to_cpu(ht_info->header.len));
 396
 397                         if (!(sband->ht_cap.cap &
 398                                         IEEE80211_HT_CAP_SUP_WIDTH_20_40))
 399                                 ht_info->ht_oper.ht_param &=
 400                                         ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
 401                                         IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
 402
 403                         *buffer += sizeof(struct mwifiex_ie_types_htinfo);
 404                         ret_len += sizeof(struct mwifiex_ie_types_htinfo);
 405                 }
 406
 407                 chan_list =
 408                         (struct mwifiex_ie_types_chan_list_param_set *) *buffer;
 409                 memset(chan_list, 0,
 410                        sizeof(struct mwifiex_ie_types_chan_list_param_set));
 411                 chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 412                 chan_list->header.len = cpu_to_le16(
 413                         sizeof(struct mwifiex_ie_types_chan_list_param_set) -
 414                         sizeof(struct mwifiex_ie_types_header));
 415                 chan_list->chan_scan_param[0].chan_number =
 416                         bss_desc->bcn_ht_oper->primary_chan;
 417                 chan_list->chan_scan_param[0].radio_type =
 418                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
 419
 420                 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
 421                     bss_desc->bcn_ht_oper->ht_param &
 422                     IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
 423                         SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
 424                                           radio_type,
 425                                           (bss_desc->bcn_ht_oper->ht_param &
 426                                           IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
 427
 428                 *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set);
 429                 ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set);
 430         }
 431
 432         if (bss_desc->bcn_bss_co_2040) {
 433                 bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
 434                 memset(bss_co_2040, 0,
 435                        sizeof(struct mwifiex_ie_types_2040bssco));
 436                 bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
 437                 bss_co_2040->header.len =
 438                        cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
 439
 440                 memcpy((u8 *) bss_co_2040 +
 441                        sizeof(struct mwifiex_ie_types_header),
 442                        bss_desc->bcn_bss_co_2040 +
 443                        sizeof(struct ieee_types_header),
 444                        le16_to_cpu(bss_co_2040->header.len));
 445
 446                 *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
 447                 ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
 448         }
 449
 450         if (bss_desc->bcn_ext_cap) {
 451                 hdr = (void *)bss_desc->bcn_ext_cap;
 452                 ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
 453                 memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
 454                 ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
 455                 ext_cap->header.len = cpu_to_le16(hdr->len);
 456
 457                 memcpy((u8 *)ext_cap->ext_capab,
 458                        bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
 459                        le16_to_cpu(ext_cap->header.len));
 460
 461                 if (hdr->len > 3 &&
 462                     ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
 463                         priv->hs2_enabled = true;
 464                 else
 465                         priv->hs2_enabled = false;
 466
 467                 *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
 468                 ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
 469         }
 470
 471         return ret_len;
 472 }
 473
 474 /*
 475  * This function checks if the given pointer is valid entry of
 476  * Tx BA Stream table.
 477  */
 478 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
 479                                 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
 480 {
 481         struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
 482
 483         list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 484                 if (tx_ba_tsr_tbl == tx_tbl_ptr)
 485                         return true;
 486         }
 487
 488         return false;
 489 }
 490
 491 /*
 492  * This function deletes the given entry in Tx BA Stream table.
 493  *
 494  * The function also performs a validity check on the supplied
 495  * pointer before trying to delete.
 496  */
 497 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
 498                                 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
 499 {
 500         if (!tx_ba_tsr_tbl &&
 501             mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
 502                 return;
 503
 504         mwifiex_dbg(priv->adapter, INFO,
 505                     "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
 506
 507         list_del(&tx_ba_tsr_tbl->list);
 508
 509         kfree(tx_ba_tsr_tbl);
 510 }
 511
 512 /*
 513  * This function deletes all the entries in Tx BA Stream table.
 514  */
 515 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
 516 {
 517         int i;
 518         struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
 519         unsigned long flags;
 520
 521         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 522         list_for_each_entry_safe(del_tbl_ptr, tmp_node,
 523                                  &priv->tx_ba_stream_tbl_ptr, list)
 524                 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
 525         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 526
 527         INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
 528
 529         for (i = 0; i < MAX_NUM_TID; ++i)
 530                 priv->aggr_prio_tbl[i].ampdu_ap =
 531                         priv->aggr_prio_tbl[i].ampdu_user;
 532 }
 533
 534 /*
 535  * This function returns the pointer to an entry in BA Stream
 536  * table which matches the given RA/TID pair.
 537  */
 538 struct mwifiex_tx_ba_stream_tbl *
 539 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
 540 {
 541         struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
 542         unsigned long flags;
 543
 544         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 545         list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 546                 if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
 547                     tx_ba_tsr_tbl->tid == tid) {
 548                         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock,
 549                                                flags);
 550                         return tx_ba_tsr_tbl;
 551                 }
 552         }
 553         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 554         return NULL;
 555 }
 556
 557 /*
 558  * This function creates an entry in Tx BA stream table for the
 559  * given RA/TID pair.
 560  */
 561 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
 562                            enum mwifiex_ba_status ba_status)
 563 {
 564         struct mwifiex_tx_ba_stream_tbl *new_node;
 565         struct mwifiex_ra_list_tbl *ra_list;
 566         unsigned long flags;
 567         int tid_down;
 568
 569         if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
 570                 new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
 571                                    GFP_ATOMIC);
 572                 if (!new_node)
 573                         return;
 574
 575                 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
 576                 ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra);
 577                 if (ra_list) {
 578                         ra_list->ba_status = ba_status;
 579                         ra_list->amsdu_in_ampdu = false;
 580                 }
 581                 INIT_LIST_HEAD(&new_node->list);
 582
 583                 new_node->tid = tid;
 584                 new_node->ba_status = ba_status;
 585                 memcpy(new_node->ra, ra, ETH_ALEN);
 586
 587                 spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 588                 list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
 589                 spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 590         }
 591 }
 592
 593 /*
 594  * This function sends an add BA request to the given TID/RA pair.
 595  */
 596 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
 597 {
 598         struct host_cmd_ds_11n_addba_req add_ba_req;
 599         u32 tx_win_size = priv->add_ba_param.tx_win_size;
 600         static u8 dialog_tok;
 601         int ret;
 602         unsigned long flags;
 603         u16 block_ack_param_set;
 604
 605         mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid);
 606
 607         memset(&add_ba_req, 0, sizeof(add_ba_req));
 608
 609         if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
 610             ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
 611             priv->adapter->is_hw_11ac_capable &&
 612             memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) {
 613                 struct mwifiex_sta_node *sta_ptr;
 614
 615                 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
 616                 sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
 617                 if (!sta_ptr) {
 618                         spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
 619                         mwifiex_dbg(priv->adapter, ERROR,
 620                                     "BA setup with unknown TDLS peer %pM!\n",
 621                                     peer_mac);
 622                         return -1;
 623                 }
 624                 if (sta_ptr->is_11ac_enabled)
 625                         tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
 626                 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
 627         }
 628
 629         block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
 630                                     tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
 631                                     IMMEDIATE_BLOCK_ACK);
 632
 633         /* enable AMSDU inside AMPDU */
 634         if (priv->add_ba_param.tx_amsdu &&
 635             (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
 636                 block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
 637
 638         add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
 639         add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
 640
 641         ++dialog_tok;
 642
 643         if (dialog_tok == 0)
 644                 dialog_tok = 1;
 645
 646         add_ba_req.dialog_token = dialog_tok;
 647         memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
 648
 649         /* We don't wait for the response of this command */
 650         ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ,
 651                                0, 0, &add_ba_req, false);
 652
 653         return ret;
 654 }
 655
 656 /*
 657  * This function sends a delete BA request to the given TID/RA pair.
 658  */
 659 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
 660                        int initiator)
 661 {
 662         struct host_cmd_ds_11n_delba delba;
 663         int ret;
 664         uint16_t del_ba_param_set;
 665
 666         memset(&delba, 0, sizeof(delba));
 667         delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS);
 668
 669         del_ba_param_set = le16_to_cpu(delba.del_ba_param_set);
 670         if (initiator)
 671                 del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
 672         else
 673                 del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
 674
 675         memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
 676
 677         /* We don't wait for the response of this command */
 678         ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
 679                                HostCmd_ACT_GEN_SET, 0, &delba, false);
 680
 681         return ret;
 682 }
 683
 684 /*
 685  * This function sends delba to specific tid
 686  */
 687 void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
 688 {
 689         struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
 690         unsigned long flags;
 691
 692         spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags);
 693         list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
 694                 if (rx_reor_tbl_ptr->tid == tid) {
 695                         dev_dbg(priv->adapter->dev,
 696                                 "Send delba to tid=%d, %pM\n",
 697                                 tid, rx_reor_tbl_ptr->ta);
 698                         mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
 699                         goto exit;
 700                 }
 701         }
 702 exit:
 703         spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags);
 704 }
 705
 706 /*
 707  * This function handles the command response of a delete BA request.
 708  */
 709 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
 710 {
 711         struct host_cmd_ds_11n_delba *cmd_del_ba =
 712                 (struct host_cmd_ds_11n_delba *) del_ba;
 713         uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
 714         int tid;
 715
 716         tid = del_ba_param_set >> DELBA_TID_POS;
 717
 718         mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
 719                            TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
 720 }
 721
 722 /*
 723  * This function retrieves the Rx reordering table.
 724  */
 725 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
 726                                struct mwifiex_ds_rx_reorder_tbl *buf)
 727 {
 728         int i;
 729         struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
 730         struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
 731         int count = 0;
 732         unsigned long flags;
 733
 734         spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags);
 735         list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
 736                             list) {
 737                 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
 738                 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
 739                 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
 740                 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
 741                 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
 742                         if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
 743                                 rx_reo_tbl->buffer[i] = true;
 744                         else
 745                                 rx_reo_tbl->buffer[i] = false;
 746                 }
 747                 rx_reo_tbl++;
 748                 count++;
 749
 750                 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
 751                         break;
 752         }
 753         spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags);
 754
 755         return count;
 756 }
 757
 758 /*
 759  * This function retrieves the Tx BA stream table.
 760  */
 761 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
 762                                  struct mwifiex_ds_tx_ba_stream_tbl *buf)
 763 {
 764         struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
 765         struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
 766         int count = 0;
 767         unsigned long flags;
 768
 769         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 770         list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 771                 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
 772                 mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n",
 773                             __func__, rx_reo_tbl->tid);
 774                 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
 775                 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
 776                 rx_reo_tbl++;
 777                 count++;
 778                 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
 779                         break;
 780         }
 781         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 782
 783         return count;
 784 }
 785
 786 /*
 787  * This function retrieves the entry for specific tx BA stream table by RA and
 788  * deletes it.
 789  */
 790 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
 791 {
 792         struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
 793         unsigned long flags;
 794
 795         if (!ra)
 796                 return;
 797
 798         spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
 799         list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list)
 800                 if (!memcmp(tbl->ra, ra, ETH_ALEN))
 801                         mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
 802         spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);
 803
 804         return;
 805 }
 806
 807 /* This function initializes the BlockACK setup information for given
 808  * mwifiex_private structure.
 809  */
 810 void mwifiex_set_ba_params(struct mwifiex_private *priv)
 811 {
 812         priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
 813
 814         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
 815                 priv->add_ba_param.tx_win_size =
 816                                                 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
 817                 priv->add_ba_param.rx_win_size =
 818                                                 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
 819         } else {
 820                 priv->add_ba_param.tx_win_size =
 821                                                 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
 822                 priv->add_ba_param.rx_win_size =
 823                                                 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
 824         }
 825
 826         priv->add_ba_param.tx_amsdu = true;
 827         priv->add_ba_param.rx_amsdu = true;
 828
 829         return;
 830 }
 831
 832 u8 mwifiex_get_sec_chan_offset(int chan)
 833 {
 834         u8 sec_offset;
 835
 836         switch (chan) {
 837         case 36:
 838         case 44:
 839         case 52:
 840         case 60:
 841         case 100:
 842         case 108:
 843         case 116:
 844         case 124:
 845         case 132:
 846         case 140:
 847         case 149:
 848         case 157:
 849                 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
 850                 break;
 851         case 40:
 852         case 48:
 853         case 56:
 854         case 64:
 855         case 104:
 856         case 112:
 857         case 120:
 858         case 128:
 859         case 136:
 860         case 144:
 861         case 153:
 862         case 161:
 863                 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
 864                 break;
 865         case 165:
 866         default:
 867                 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 868                 break;
 869         }
 870
 871         return sec_offset;
 872 }
 873
 874 /* This function will send DELBA to entries in the priv's
 875  * Tx BA stream table
 876  */
 877 static void
 878 mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
 879 {
 880         struct mwifiex_adapter *adapter = priv->adapter;
 881         struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
 882
 883         list_for_each_entry(tx_ba_stream_tbl_ptr,
 884                             &priv->tx_ba_stream_tbl_ptr, list) {
 885                 if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
 886                         if (tid == tx_ba_stream_tbl_ptr->tid) {
 887                                 dev_dbg(adapter->dev,
 888                                         "Tx:Send delba to tid=%d, %pM\n", tid,
 889                                         tx_ba_stream_tbl_ptr->ra);
 890                                 mwifiex_send_delba(priv,
 891                                                    tx_ba_stream_tbl_ptr->tid,
 892                                                    tx_ba_stream_tbl_ptr->ra, 1);
 893                                 return;
 894                         }
 895                 }
 896         }
 897 }
 898
 899 /* This function updates all the tx_win_size
 900  */
 901 void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
 902 {
 903         u8 i;
 904         u32 tx_win_size;
 905         struct mwifiex_private *priv;
 906
 907         for (i = 0; i < adapter->priv_num; i++) {
 908                 if (!adapter->priv[i])
 909                         continue;
 910                 priv = adapter->priv[i];
 911                 tx_win_size = priv->add_ba_param.tx_win_size;
 912
 913                 if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
 914                         priv->add_ba_param.tx_win_size =
 915                                 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
 916
 917                 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
 918                         priv->add_ba_param.tx_win_size =
 919                                 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
 920
 921                 if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
 922                         priv->add_ba_param.tx_win_size =
 923                                 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
 924
 925                 if (adapter->coex_win_size) {
 926                         if (adapter->coex_tx_win_size)
 927                                 priv->add_ba_param.tx_win_size =
 928                                         adapter->coex_tx_win_size;
 929                 }
 930
 931                 if (tx_win_size != priv->add_ba_param.tx_win_size) {
 932                         if (!priv->media_connected)
 933                                 continue;
 934                         for (i = 0; i < MAX_NUM_TID; i++)
 935                                 mwifiex_send_delba_txbastream_tbl(priv, i);
 936                 }
 937         }
 938 }