linux/drivers/net/wireless/marvell/mwifiex/11n.c
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   1/*
   2 * NXP Wireless LAN device driver: 802.11n
   3 *
   4 * Copyright 2011-2020 NXP
   5 *
   6 * This software file (the "File") is distributed by NXP
   7 * 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                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 */
  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
  88        spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
  89        list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
  90                if (tx_ba_tsr_tbl->ba_status == ba_status) {
  91                        spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
  92                        return tx_ba_tsr_tbl;
  93                }
  94        }
  95        spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
  96        return NULL;
  97}
  98
  99/*
 100 * This function handles the command response of delete a block
 101 * ack request.
 102 *
 103 * The function checks the response success status and takes action
 104 * accordingly (send an add BA request in case of success, or recreate
 105 * the deleted stream in case of failure, if the add BA was also
 106 * initiated by us).
 107 */
 108int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
 109                          struct host_cmd_ds_command *resp)
 110{
 111        int tid;
 112        struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
 113        struct host_cmd_ds_11n_delba *del_ba = &resp->params.del_ba;
 114        uint16_t del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set);
 115
 116        tid = del_ba_param_set >> DELBA_TID_POS;
 117        if (del_ba->del_result == BA_RESULT_SUCCESS) {
 118                mwifiex_del_ba_tbl(priv, tid, del_ba->peer_mac_addr,
 119                                   TYPE_DELBA_SENT,
 120                                   INITIATOR_BIT(del_ba_param_set));
 121
 122                tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
 123                if (tx_ba_tbl)
 124                        mwifiex_send_addba(priv, tx_ba_tbl->tid,
 125                                           tx_ba_tbl->ra);
 126        } else { /*
 127                  * In case of failure, recreate the deleted stream in case
 128                  * we initiated the DELBA
 129                  */
 130                if (!INITIATOR_BIT(del_ba_param_set))
 131                        return 0;
 132
 133                mwifiex_create_ba_tbl(priv, del_ba->peer_mac_addr, tid,
 134                                      BA_SETUP_INPROGRESS);
 135
 136                tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
 137
 138                if (tx_ba_tbl)
 139                        mwifiex_del_ba_tbl(priv, tx_ba_tbl->tid, tx_ba_tbl->ra,
 140                                           TYPE_DELBA_SENT, true);
 141        }
 142
 143        return 0;
 144}
 145
 146/*
 147 * This function handles the command response of add a block
 148 * ack request.
 149 *
 150 * Handling includes changing the header fields to CPU formats, checking
 151 * the response success status and taking actions accordingly (delete the
 152 * BA stream table in case of failure).
 153 */
 154int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
 155                              struct host_cmd_ds_command *resp)
 156{
 157        int tid, tid_down;
 158        struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp;
 159        struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
 160        struct mwifiex_ra_list_tbl *ra_list;
 161        u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set);
 162
 163        add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn))
 164                        & SSN_MASK);
 165
 166        tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK)
 167               >> BLOCKACKPARAM_TID_POS;
 168
 169        tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
 170        ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, 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                mwifiex_dbg(priv->adapter, EVENT, "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                mwifiex_dbg(priv->adapter, ERROR, "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                mwifiex_dbg(priv->adapter, CMD,
 228                            "cmd: set tx_buf=%d\n", *buf_size);
 229                tx_buf->buff_size = cpu_to_le16(*buf_size);
 230                break;
 231        case HostCmd_ACT_GEN_GET:
 232        default:
 233                tx_buf->buff_size = 0;
 234                break;
 235        }
 236        return 0;
 237}
 238
 239/*
 240 * This function prepares command of AMSDU aggregation control.
 241 *
 242 * Preparation includes -
 243 *      - Setting command ID, action and proper size
 244 *      - Setting AMSDU control parameters (for SET only)
 245 *      - Ensuring correct endian-ness
 246 */
 247int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
 248                                int cmd_action,
 249                                struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
 250{
 251        struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
 252                &cmd->params.amsdu_aggr_ctrl;
 253        u16 action = (u16) cmd_action;
 254
 255        cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL);
 256        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl)
 257                                + S_DS_GEN);
 258        amsdu_ctrl->action = cpu_to_le16(action);
 259        switch (action) {
 260        case HostCmd_ACT_GEN_SET:
 261                amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable);
 262                amsdu_ctrl->curr_buf_size = 0;
 263                break;
 264        case HostCmd_ACT_GEN_GET:
 265        default:
 266                amsdu_ctrl->curr_buf_size = 0;
 267                break;
 268        }
 269        return 0;
 270}
 271
 272/*
 273 * This function prepares 11n configuration command.
 274 *
 275 * Preparation includes -
 276 *      - Setting command ID, action and proper size
 277 *      - Setting HT Tx capability and HT Tx information fields
 278 *      - Ensuring correct endian-ness
 279 */
 280int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
 281                        struct host_cmd_ds_command *cmd, u16 cmd_action,
 282                        struct mwifiex_ds_11n_tx_cfg *txcfg)
 283{
 284        struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
 285
 286        cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG);
 287        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN);
 288        htcfg->action = cpu_to_le16(cmd_action);
 289        htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap);
 290        htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo);
 291
 292        if (priv->adapter->is_hw_11ac_capable)
 293                htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
 294
 295        return 0;
 296}
 297
 298/*
 299 * This function appends an 11n TLV to a buffer.
 300 *
 301 * Buffer allocation is responsibility of the calling
 302 * function. No size validation is made here.
 303 *
 304 * The function fills up the following sections, if applicable -
 305 *      - HT capability IE
 306 *      - HT information IE (with channel list)
 307 *      - 20/40 BSS Coexistence IE
 308 *      - HT Extended Capabilities IE
 309 */
 310int
 311mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
 312                           struct mwifiex_bssdescriptor *bss_desc,
 313                           u8 **buffer)
 314{
 315        struct mwifiex_ie_types_htcap *ht_cap;
 316        struct mwifiex_ie_types_htinfo *ht_info;
 317        struct mwifiex_ie_types_chan_list_param_set *chan_list;
 318        struct mwifiex_ie_types_2040bssco *bss_co_2040;
 319        struct mwifiex_ie_types_extcap *ext_cap;
 320        int ret_len = 0;
 321        struct ieee80211_supported_band *sband;
 322        struct ieee_types_header *hdr;
 323        u8 radio_type;
 324
 325        if (!buffer || !*buffer)
 326                return ret_len;
 327
 328        radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
 329        sband = priv->wdev.wiphy->bands[radio_type];
 330
 331        if (bss_desc->bcn_ht_cap) {
 332                ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
 333                memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
 334                ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
 335                ht_cap->header.len =
 336                                cpu_to_le16(sizeof(struct ieee80211_ht_cap));
 337                memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header),
 338                       (u8 *)bss_desc->bcn_ht_cap,
 339                       le16_to_cpu(ht_cap->header.len));
 340
 341                mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
 342                /* Update HT40 capability from current channel information */
 343                if (bss_desc->bcn_ht_oper) {
 344                        u8 ht_param = bss_desc->bcn_ht_oper->ht_param;
 345                        u8 radio =
 346                        mwifiex_band_to_radio_type(bss_desc->bss_band);
 347                        int freq =
 348                        ieee80211_channel_to_frequency(bss_desc->channel,
 349                                                       radio);
 350                        struct ieee80211_channel *chan =
 351                        ieee80211_get_channel(priv->adapter->wiphy, freq);
 352
 353                        switch (ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
 354                        case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
 355                                if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) {
 356                                        ht_cap->ht_cap.cap_info &=
 357                                        cpu_to_le16
 358                                        (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 359                                        ht_cap->ht_cap.cap_info &=
 360                                        cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
 361                                }
 362                                break;
 363                        case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
 364                                if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) {
 365                                        ht_cap->ht_cap.cap_info &=
 366                                        cpu_to_le16
 367                                        (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 368                                        ht_cap->ht_cap.cap_info &=
 369                                        cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
 370                                }
 371                                break;
 372                        }
 373                }
 374
 375                *buffer += sizeof(struct mwifiex_ie_types_htcap);
 376                ret_len += sizeof(struct mwifiex_ie_types_htcap);
 377        }
 378
 379        if (bss_desc->bcn_ht_oper) {
 380                if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 381                        ht_info = (struct mwifiex_ie_types_htinfo *) *buffer;
 382                        memset(ht_info, 0,
 383                               sizeof(struct mwifiex_ie_types_htinfo));
 384                        ht_info->header.type =
 385                                        cpu_to_le16(WLAN_EID_HT_OPERATION);
 386                        ht_info->header.len =
 387                                cpu_to_le16(
 388                                        sizeof(struct ieee80211_ht_operation));
 389
 390                        memcpy((u8 *) ht_info +
 391                               sizeof(struct mwifiex_ie_types_header),
 392                               (u8 *)bss_desc->bcn_ht_oper,
 393                               le16_to_cpu(ht_info->header.len));
 394
 395                        if (!(sband->ht_cap.cap &
 396                                        IEEE80211_HT_CAP_SUP_WIDTH_20_40))
 397                                ht_info->ht_oper.ht_param &=
 398                                        ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
 399                                        IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
 400
 401                        *buffer += sizeof(struct mwifiex_ie_types_htinfo);
 402                        ret_len += sizeof(struct mwifiex_ie_types_htinfo);
 403                }
 404
 405                chan_list =
 406                        (struct mwifiex_ie_types_chan_list_param_set *) *buffer;
 407                memset(chan_list, 0,
 408                       sizeof(struct mwifiex_ie_types_chan_list_param_set));
 409                chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
 410                chan_list->header.len = cpu_to_le16(
 411                        sizeof(struct mwifiex_ie_types_chan_list_param_set) -
 412                        sizeof(struct mwifiex_ie_types_header));
 413                chan_list->chan_scan_param[0].chan_number =
 414                        bss_desc->bcn_ht_oper->primary_chan;
 415                chan_list->chan_scan_param[0].radio_type =
 416                        mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
 417
 418                if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
 419                    bss_desc->bcn_ht_oper->ht_param &
 420                    IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
 421                        SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
 422                                          radio_type,
 423                                          (bss_desc->bcn_ht_oper->ht_param &
 424                                          IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
 425
 426                *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set);
 427                ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set);
 428        }
 429
 430        if (bss_desc->bcn_bss_co_2040) {
 431                bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
 432                memset(bss_co_2040, 0,
 433                       sizeof(struct mwifiex_ie_types_2040bssco));
 434                bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
 435                bss_co_2040->header.len =
 436                       cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
 437
 438                memcpy((u8 *) bss_co_2040 +
 439                       sizeof(struct mwifiex_ie_types_header),
 440                       bss_desc->bcn_bss_co_2040 +
 441                       sizeof(struct ieee_types_header),
 442                       le16_to_cpu(bss_co_2040->header.len));
 443
 444                *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
 445                ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
 446        }
 447
 448        if (bss_desc->bcn_ext_cap) {
 449                hdr = (void *)bss_desc->bcn_ext_cap;
 450                ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
 451                memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
 452                ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
 453                ext_cap->header.len = cpu_to_le16(hdr->len);
 454
 455                memcpy((u8 *)ext_cap->ext_capab,
 456                       bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
 457                       le16_to_cpu(ext_cap->header.len));
 458
 459                if (hdr->len > 3 &&
 460                    ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
 461                        priv->hs2_enabled = true;
 462                else
 463                        priv->hs2_enabled = false;
 464
 465                *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
 466                ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
 467        }
 468
 469        return ret_len;
 470}
 471
 472/*
 473 * This function checks if the given pointer is valid entry of
 474 * Tx BA Stream table.
 475 */
 476static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
 477                                struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
 478{
 479        struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
 480
 481        list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 482                if (tx_ba_tsr_tbl == tx_tbl_ptr)
 483                        return true;
 484        }
 485
 486        return false;
 487}
 488
 489/*
 490 * This function deletes the given entry in Tx BA Stream table.
 491 *
 492 * The function also performs a validity check on the supplied
 493 * pointer before trying to delete.
 494 */
 495void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
 496                                struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
 497{
 498        if (!tx_ba_tsr_tbl &&
 499            mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
 500                return;
 501
 502        mwifiex_dbg(priv->adapter, INFO,
 503                    "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
 504
 505        list_del(&tx_ba_tsr_tbl->list);
 506
 507        kfree(tx_ba_tsr_tbl);
 508}
 509
 510/*
 511 * This function deletes all the entries in Tx BA Stream table.
 512 */
 513void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
 514{
 515        int i;
 516        struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
 517
 518        spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
 519        list_for_each_entry_safe(del_tbl_ptr, tmp_node,
 520                                 &priv->tx_ba_stream_tbl_ptr, list)
 521                mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
 522        spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
 523
 524        INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
 525
 526        for (i = 0; i < MAX_NUM_TID; ++i)
 527                priv->aggr_prio_tbl[i].ampdu_ap =
 528                        priv->aggr_prio_tbl[i].ampdu_user;
 529}
 530
 531/*
 532 * This function returns the pointer to an entry in BA Stream
 533 * table which matches the given RA/TID pair.
 534 */
 535struct mwifiex_tx_ba_stream_tbl *
 536mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
 537{
 538        struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
 539
 540        spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
 541        list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 542                if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
 543                    tx_ba_tsr_tbl->tid == tid) {
 544                        spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
 545                        return tx_ba_tsr_tbl;
 546                }
 547        }
 548        spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
 549        return NULL;
 550}
 551
 552/*
 553 * This function creates an entry in Tx BA stream table for the
 554 * given RA/TID pair.
 555 */
 556void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
 557                           enum mwifiex_ba_status ba_status)
 558{
 559        struct mwifiex_tx_ba_stream_tbl *new_node;
 560        struct mwifiex_ra_list_tbl *ra_list;
 561        int tid_down;
 562
 563        if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
 564                new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
 565                                   GFP_ATOMIC);
 566                if (!new_node)
 567                        return;
 568
 569                tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
 570                ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra);
 571                if (ra_list) {
 572                        ra_list->ba_status = ba_status;
 573                        ra_list->amsdu_in_ampdu = false;
 574                }
 575                INIT_LIST_HEAD(&new_node->list);
 576
 577                new_node->tid = tid;
 578                new_node->ba_status = ba_status;
 579                memcpy(new_node->ra, ra, ETH_ALEN);
 580
 581                spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
 582                list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
 583                spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
 584        }
 585}
 586
 587/*
 588 * This function sends an add BA request to the given TID/RA pair.
 589 */
 590int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
 591{
 592        struct host_cmd_ds_11n_addba_req add_ba_req;
 593        u32 tx_win_size = priv->add_ba_param.tx_win_size;
 594        static u8 dialog_tok;
 595        int ret;
 596        u16 block_ack_param_set;
 597
 598        mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid);
 599
 600        memset(&add_ba_req, 0, sizeof(add_ba_req));
 601
 602        if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
 603            ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
 604            priv->adapter->is_hw_11ac_capable &&
 605            memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) {
 606                struct mwifiex_sta_node *sta_ptr;
 607
 608                spin_lock_bh(&priv->sta_list_spinlock);
 609                sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
 610                if (!sta_ptr) {
 611                        spin_unlock_bh(&priv->sta_list_spinlock);
 612                        mwifiex_dbg(priv->adapter, ERROR,
 613                                    "BA setup with unknown TDLS peer %pM!\n",
 614                                    peer_mac);
 615                        return -1;
 616                }
 617                if (sta_ptr->is_11ac_enabled)
 618                        tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
 619                spin_unlock_bh(&priv->sta_list_spinlock);
 620        }
 621
 622        block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
 623                                    tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
 624                                    IMMEDIATE_BLOCK_ACK);
 625
 626        /* enable AMSDU inside AMPDU */
 627        if (priv->add_ba_param.tx_amsdu &&
 628            (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
 629                block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
 630
 631        add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
 632        add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
 633
 634        ++dialog_tok;
 635
 636        if (dialog_tok == 0)
 637                dialog_tok = 1;
 638
 639        add_ba_req.dialog_token = dialog_tok;
 640        memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
 641
 642        /* We don't wait for the response of this command */
 643        ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ,
 644                               0, 0, &add_ba_req, false);
 645
 646        return ret;
 647}
 648
 649/*
 650 * This function sends a delete BA request to the given TID/RA pair.
 651 */
 652int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
 653                       int initiator)
 654{
 655        struct host_cmd_ds_11n_delba delba;
 656        int ret;
 657        uint16_t del_ba_param_set;
 658
 659        memset(&delba, 0, sizeof(delba));
 660
 661        del_ba_param_set = tid << DELBA_TID_POS;
 662
 663        if (initiator)
 664                del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
 665        else
 666                del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
 667
 668        delba.del_ba_param_set = cpu_to_le16(del_ba_param_set);
 669        memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
 670
 671        /* We don't wait for the response of this command */
 672        ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
 673                               HostCmd_ACT_GEN_SET, 0, &delba, false);
 674
 675        return ret;
 676}
 677
 678/*
 679 * This function sends delba to specific tid
 680 */
 681void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
 682{
 683        struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
 684
 685        spin_lock_bh(&priv->rx_reorder_tbl_lock);
 686        list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
 687                if (rx_reor_tbl_ptr->tid == tid) {
 688                        dev_dbg(priv->adapter->dev,
 689                                "Send delba to tid=%d, %pM\n",
 690                                tid, rx_reor_tbl_ptr->ta);
 691                        mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
 692                        goto exit;
 693                }
 694        }
 695exit:
 696        spin_unlock_bh(&priv->rx_reorder_tbl_lock);
 697}
 698
 699/*
 700 * This function handles the command response of a delete BA request.
 701 */
 702void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
 703{
 704        struct host_cmd_ds_11n_delba *cmd_del_ba =
 705                (struct host_cmd_ds_11n_delba *) del_ba;
 706        uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
 707        int tid;
 708
 709        tid = del_ba_param_set >> DELBA_TID_POS;
 710
 711        mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
 712                           TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
 713}
 714
 715/*
 716 * This function retrieves the Rx reordering table.
 717 */
 718int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
 719                               struct mwifiex_ds_rx_reorder_tbl *buf)
 720{
 721        int i;
 722        struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
 723        struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
 724        int count = 0;
 725
 726        spin_lock_bh(&priv->rx_reorder_tbl_lock);
 727        list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
 728                            list) {
 729                rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
 730                memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
 731                rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
 732                rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
 733                for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
 734                        if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
 735                                rx_reo_tbl->buffer[i] = true;
 736                        else
 737                                rx_reo_tbl->buffer[i] = false;
 738                }
 739                rx_reo_tbl++;
 740                count++;
 741
 742                if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
 743                        break;
 744        }
 745        spin_unlock_bh(&priv->rx_reorder_tbl_lock);
 746
 747        return count;
 748}
 749
 750/*
 751 * This function retrieves the Tx BA stream table.
 752 */
 753int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
 754                                 struct mwifiex_ds_tx_ba_stream_tbl *buf)
 755{
 756        struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
 757        struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
 758        int count = 0;
 759
 760        spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
 761        list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 762                rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
 763                mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n",
 764                            __func__, rx_reo_tbl->tid);
 765                memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
 766                rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
 767                rx_reo_tbl++;
 768                count++;
 769                if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
 770                        break;
 771        }
 772        spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
 773
 774        return count;
 775}
 776
 777/*
 778 * This function retrieves the entry for specific tx BA stream table by RA and
 779 * deletes it.
 780 */
 781void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
 782{
 783        struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
 784
 785        if (!ra)
 786                return;
 787
 788        spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
 789        list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list)
 790                if (!memcmp(tbl->ra, ra, ETH_ALEN))
 791                        mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
 792        spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
 793
 794        return;
 795}
 796
 797/* This function initializes the BlockACK setup information for given
 798 * mwifiex_private structure.
 799 */
 800void mwifiex_set_ba_params(struct mwifiex_private *priv)
 801{
 802        priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
 803
 804        if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
 805                priv->add_ba_param.tx_win_size =
 806                                                MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
 807                priv->add_ba_param.rx_win_size =
 808                                                MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
 809        } else {
 810                priv->add_ba_param.tx_win_size =
 811                                                MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
 812                priv->add_ba_param.rx_win_size =
 813                                                MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
 814        }
 815
 816        priv->add_ba_param.tx_amsdu = true;
 817        priv->add_ba_param.rx_amsdu = true;
 818
 819        return;
 820}
 821
 822u8 mwifiex_get_sec_chan_offset(int chan)
 823{
 824        u8 sec_offset;
 825
 826        switch (chan) {
 827        case 36:
 828        case 44:
 829        case 52:
 830        case 60:
 831        case 100:
 832        case 108:
 833        case 116:
 834        case 124:
 835        case 132:
 836        case 140:
 837        case 149:
 838        case 157:
 839                sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
 840                break;
 841        case 40:
 842        case 48:
 843        case 56:
 844        case 64:
 845        case 104:
 846        case 112:
 847        case 120:
 848        case 128:
 849        case 136:
 850        case 144:
 851        case 153:
 852        case 161:
 853                sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
 854                break;
 855        case 165:
 856        default:
 857                sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 858                break;
 859        }
 860
 861        return sec_offset;
 862}
 863
 864/* This function will send DELBA to entries in the priv's
 865 * Tx BA stream table
 866 */
 867static void
 868mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
 869{
 870        struct mwifiex_adapter *adapter = priv->adapter;
 871        struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
 872
 873        list_for_each_entry(tx_ba_stream_tbl_ptr,
 874                            &priv->tx_ba_stream_tbl_ptr, list) {
 875                if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
 876                        if (tid == tx_ba_stream_tbl_ptr->tid) {
 877                                dev_dbg(adapter->dev,
 878                                        "Tx:Send delba to tid=%d, %pM\n", tid,
 879                                        tx_ba_stream_tbl_ptr->ra);
 880                                mwifiex_send_delba(priv,
 881                                                   tx_ba_stream_tbl_ptr->tid,
 882                                                   tx_ba_stream_tbl_ptr->ra, 1);
 883                                return;
 884                        }
 885                }
 886        }
 887}
 888
 889/* This function updates all the tx_win_size
 890 */
 891void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
 892{
 893        u8 i;
 894        u32 tx_win_size;
 895        struct mwifiex_private *priv;
 896
 897        for (i = 0; i < adapter->priv_num; i++) {
 898                if (!adapter->priv[i])
 899                        continue;
 900                priv = adapter->priv[i];
 901                tx_win_size = priv->add_ba_param.tx_win_size;
 902
 903                if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
 904                        priv->add_ba_param.tx_win_size =
 905                                MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
 906
 907                if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
 908                        priv->add_ba_param.tx_win_size =
 909                                MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
 910
 911                if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
 912                        priv->add_ba_param.tx_win_size =
 913                                MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
 914
 915                if (adapter->coex_win_size) {
 916                        if (adapter->coex_tx_win_size)
 917                                priv->add_ba_param.tx_win_size =
 918                                        adapter->coex_tx_win_size;
 919                }
 920
 921                if (tx_win_size != priv->add_ba_param.tx_win_size) {
 922                        if (!priv->media_connected)
 923                                continue;
 924                        for (i = 0; i < MAX_NUM_TID; i++)
 925                                mwifiex_send_delba_txbastream_tbl(priv, i);
 926                }
 927        }
 928}
 929