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

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This source file includes following definitions.
mwifiex_fill_cap_info
mwifiex_get_ba_status
mwifiex_ret_11n_delba
mwifiex_ret_11n_addba_req
mwifiex_cmd_recfg_tx_buf
mwifiex_cmd_amsdu_aggr_ctrl
mwifiex_cmd_11n_cfg
mwifiex_cmd_append_11n_tlv
mwifiex_is_tx_ba_stream_ptr_valid
mwifiex_11n_delete_tx_ba_stream_tbl_entry
mwifiex_11n_delete_all_tx_ba_stream_tbl
mwifiex_get_ba_tbl
mwifiex_create_ba_tbl
mwifiex_send_addba
mwifiex_send_delba
mwifiex_11n_delba
mwifiex_11n_delete_ba_stream
mwifiex_get_rx_reorder_tbl
mwifiex_get_tx_ba_stream_tbl
mwifiex_del_tx_ba_stream_tbl_by_ra
mwifiex_set_ba_params
mwifiex_get_sec_chan_offset
mwifiex_send_delba_txbastream_tbl
mwifiex_update_ampdu_txwinsize
   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 
  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  */
 108 int 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 ADDBA
 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  */
 154 int 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  */
 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                 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  */
 247 int 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  */
 280 int 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  */
 310 int
 311 mwifiex_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  */
 476 static 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  */
 495 void 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  */
 513 void 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  */
 535 struct mwifiex_tx_ba_stream_tbl *
 536 mwifiex_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  */
 556 void 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  */
 590 int 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  */
 652 int 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         delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS);
 661 
 662         del_ba_param_set = le16_to_cpu(delba.del_ba_param_set);
 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         memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
 669 
 670         /* We don't wait for the response of this command */
 671         ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
 672                                HostCmd_ACT_GEN_SET, 0, &delba, false);
 673 
 674         return ret;
 675 }
 676 
 677 /*
 678  * This function sends delba to specific tid
 679  */
 680 void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
 681 {
 682         struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
 683 
 684         spin_lock_bh(&priv->rx_reorder_tbl_lock);
 685         list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
 686                 if (rx_reor_tbl_ptr->tid == tid) {
 687                         dev_dbg(priv->adapter->dev,
 688                                 "Send delba to tid=%d, %pM\n",
 689                                 tid, rx_reor_tbl_ptr->ta);
 690                         mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
 691                         goto exit;
 692                 }
 693         }
 694 exit:
 695         spin_unlock_bh(&priv->rx_reorder_tbl_lock);
 696 }
 697 
 698 /*
 699  * This function handles the command response of a delete BA request.
 700  */
 701 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
 702 {
 703         struct host_cmd_ds_11n_delba *cmd_del_ba =
 704                 (struct host_cmd_ds_11n_delba *) del_ba;
 705         uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
 706         int tid;
 707 
 708         tid = del_ba_param_set >> DELBA_TID_POS;
 709 
 710         mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
 711                            TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
 712 }
 713 
 714 /*
 715  * This function retrieves the Rx reordering table.
 716  */
 717 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
 718                                struct mwifiex_ds_rx_reorder_tbl *buf)
 719 {
 720         int i;
 721         struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
 722         struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
 723         int count = 0;
 724 
 725         spin_lock_bh(&priv->rx_reorder_tbl_lock);
 726         list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
 727                             list) {
 728                 rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
 729                 memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
 730                 rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
 731                 rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
 732                 for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
 733                         if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
 734                                 rx_reo_tbl->buffer[i] = true;
 735                         else
 736                                 rx_reo_tbl->buffer[i] = false;
 737                 }
 738                 rx_reo_tbl++;
 739                 count++;
 740 
 741                 if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
 742                         break;
 743         }
 744         spin_unlock_bh(&priv->rx_reorder_tbl_lock);
 745 
 746         return count;
 747 }
 748 
 749 /*
 750  * This function retrieves the Tx BA stream table.
 751  */
 752 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
 753                                  struct mwifiex_ds_tx_ba_stream_tbl *buf)
 754 {
 755         struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
 756         struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
 757         int count = 0;
 758 
 759         spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
 760         list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
 761                 rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
 762                 mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n",
 763                             __func__, rx_reo_tbl->tid);
 764                 memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
 765                 rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
 766                 rx_reo_tbl++;
 767                 count++;
 768                 if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
 769                         break;
 770         }
 771         spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
 772 
 773         return count;
 774 }
 775 
 776 /*
 777  * This function retrieves the entry for specific tx BA stream table by RA and
 778  * deletes it.
 779  */
 780 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
 781 {
 782         struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
 783 
 784         if (!ra)
 785                 return;
 786 
 787         spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
 788         list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list)
 789                 if (!memcmp(tbl->ra, ra, ETH_ALEN))
 790                         mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
 791         spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
 792 
 793         return;
 794 }
 795 
 796 /* This function initializes the BlockACK setup information for given
 797  * mwifiex_private structure.
 798  */
 799 void mwifiex_set_ba_params(struct mwifiex_private *priv)
 800 {
 801         priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
 802 
 803         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
 804                 priv->add_ba_param.tx_win_size =
 805                                                 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
 806                 priv->add_ba_param.rx_win_size =
 807                                                 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
 808         } else {
 809                 priv->add_ba_param.tx_win_size =
 810                                                 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
 811                 priv->add_ba_param.rx_win_size =
 812                                                 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
 813         }
 814 
 815         priv->add_ba_param.tx_amsdu = true;
 816         priv->add_ba_param.rx_amsdu = true;
 817 
 818         return;
 819 }
 820 
 821 u8 mwifiex_get_sec_chan_offset(int chan)
 822 {
 823         u8 sec_offset;
 824 
 825         switch (chan) {
 826         case 36:
 827         case 44:
 828         case 52:
 829         case 60:
 830         case 100:
 831         case 108:
 832         case 116:
 833         case 124:
 834         case 132:
 835         case 140:
 836         case 149:
 837         case 157:
 838                 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
 839                 break;
 840         case 40:
 841         case 48:
 842         case 56:
 843         case 64:
 844         case 104:
 845         case 112:
 846         case 120:
 847         case 128:
 848         case 136:
 849         case 144:
 850         case 153:
 851         case 161:
 852                 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
 853                 break;
 854         case 165:
 855         default:
 856                 sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 857                 break;
 858         }
 859 
 860         return sec_offset;
 861 }
 862 
 863 /* This function will send DELBA to entries in the priv's
 864  * Tx BA stream table
 865  */
 866 static void
 867 mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
 868 {
 869         struct mwifiex_adapter *adapter = priv->adapter;
 870         struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
 871 
 872         list_for_each_entry(tx_ba_stream_tbl_ptr,
 873                             &priv->tx_ba_stream_tbl_ptr, list) {
 874                 if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
 875                         if (tid == tx_ba_stream_tbl_ptr->tid) {
 876                                 dev_dbg(adapter->dev,
 877                                         "Tx:Send delba to tid=%d, %pM\n", tid,
 878                                         tx_ba_stream_tbl_ptr->ra);
 879                                 mwifiex_send_delba(priv,
 880                                                    tx_ba_stream_tbl_ptr->tid,
 881                                                    tx_ba_stream_tbl_ptr->ra, 1);
 882                                 return;
 883                         }
 884                 }
 885         }
 886 }
 887 
 888 /* This function updates all the tx_win_size
 889  */
 890 void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
 891 {
 892         u8 i;
 893         u32 tx_win_size;
 894         struct mwifiex_private *priv;
 895 
 896         for (i = 0; i < adapter->priv_num; i++) {
 897                 if (!adapter->priv[i])
 898                         continue;
 899                 priv = adapter->priv[i];
 900                 tx_win_size = priv->add_ba_param.tx_win_size;
 901 
 902                 if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
 903                         priv->add_ba_param.tx_win_size =
 904                                 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
 905 
 906                 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
 907                         priv->add_ba_param.tx_win_size =
 908                                 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
 909 
 910                 if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
 911                         priv->add_ba_param.tx_win_size =
 912                                 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
 913 
 914                 if (adapter->coex_win_size) {
 915                         if (adapter->coex_tx_win_size)
 916                                 priv->add_ba_param.tx_win_size =
 917                                         adapter->coex_tx_win_size;
 918                 }
 919 
 920                 if (tx_win_size != priv->add_ba_param.tx_win_size) {
 921                         if (!priv->media_connected)
 922                                 continue;
 923                         for (i = 0; i < MAX_NUM_TID; i++)
 924                                 mwifiex_send_delba_txbastream_tbl(priv, i);
 925                 }
 926         }
 927 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/wireless/marvell/mwifiex/11n.c

DEFINITIONS
