Back to home page

OSCL-LXR
 
 

     

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * NXP Wireless LAN device driver: 802.11n
0004  *
0005  * Copyright 2011-2020 NXP
0006  */
0007 
0008 #include "decl.h"
0009 #include "ioctl.h"
0010 #include "util.h"
0011 #include "fw.h"
0012 #include "main.h"
0013 #include "wmm.h"
0014 #include "11n.h"
0015 
0016 /*
0017  * Fills HT capability information field, AMPDU Parameters field, HT extended
0018  * capability field, and supported MCS set fields.
0019  *
0020  * HT capability information field, AMPDU Parameters field, supported MCS set
0021  * fields are retrieved from cfg80211 stack
0022  *
0023  * RD responder bit to set to clear in the extended capability header.
0024  */
0025 int mwifiex_fill_cap_info(struct mwifiex_private *priv, u8 radio_type,
0026               struct ieee80211_ht_cap *ht_cap)
0027 {
0028     uint16_t ht_ext_cap = le16_to_cpu(ht_cap->extended_ht_cap_info);
0029     struct ieee80211_supported_band *sband =
0030                     priv->wdev.wiphy->bands[radio_type];
0031 
0032     if (WARN_ON_ONCE(!sband)) {
0033         mwifiex_dbg(priv->adapter, ERROR, "Invalid radio type!\n");
0034         return -EINVAL;
0035     }
0036 
0037     ht_cap->ampdu_params_info =
0038         (sband->ht_cap.ampdu_factor &
0039          IEEE80211_HT_AMPDU_PARM_FACTOR) |
0040         ((sband->ht_cap.ampdu_density <<
0041          IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT) &
0042          IEEE80211_HT_AMPDU_PARM_DENSITY);
0043 
0044     memcpy((u8 *)&ht_cap->mcs, &sband->ht_cap.mcs,
0045            sizeof(sband->ht_cap.mcs));
0046 
0047     if (priv->bss_mode == NL80211_IFTYPE_STATION ||
0048         (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
0049          (priv->adapter->sec_chan_offset !=
0050                     IEEE80211_HT_PARAM_CHA_SEC_NONE)))
0051         /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
0052         SETHT_MCS32(ht_cap->mcs.rx_mask);
0053 
0054     /* Clear RD responder bit */
0055     ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER;
0056 
0057     ht_cap->cap_info = cpu_to_le16(sband->ht_cap.cap);
0058     ht_cap->extended_ht_cap_info = cpu_to_le16(ht_ext_cap);
0059 
0060     if (ISSUPP_BEAMFORMING(priv->adapter->hw_dot_11n_dev_cap))
0061         ht_cap->tx_BF_cap_info = cpu_to_le32(MWIFIEX_DEF_11N_TX_BF_CAP);
0062 
0063     return 0;
0064 }
0065 
0066 /*
0067  * This function returns the pointer to an entry in BA Stream
0068  * table which matches the requested BA status.
0069  */
0070 static struct mwifiex_tx_ba_stream_tbl *
0071 mwifiex_get_ba_status(struct mwifiex_private *priv,
0072               enum mwifiex_ba_status ba_status)
0073 {
0074     struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
0075 
0076     spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
0077     list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
0078         if (tx_ba_tsr_tbl->ba_status == ba_status) {
0079             spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
0080             return tx_ba_tsr_tbl;
0081         }
0082     }
0083     spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
0084     return NULL;
0085 }
0086 
0087 /*
0088  * This function handles the command response of delete a block
0089  * ack request.
0090  *
0091  * The function checks the response success status and takes action
0092  * accordingly (send an add BA request in case of success, or recreate
0093  * the deleted stream in case of failure, if the add BA was also
0094  * initiated by us).
0095  */
0096 int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
0097               struct host_cmd_ds_command *resp)
0098 {
0099     int tid;
0100     struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
0101     struct host_cmd_ds_11n_delba *del_ba = &resp->params.del_ba;
0102     uint16_t del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set);
0103 
0104     tid = del_ba_param_set >> DELBA_TID_POS;
0105     if (del_ba->del_result == BA_RESULT_SUCCESS) {
0106         mwifiex_del_ba_tbl(priv, tid, del_ba->peer_mac_addr,
0107                    TYPE_DELBA_SENT,
0108                    INITIATOR_BIT(del_ba_param_set));
0109 
0110         tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
0111         if (tx_ba_tbl)
0112             mwifiex_send_addba(priv, tx_ba_tbl->tid,
0113                        tx_ba_tbl->ra);
0114     } else { /*
0115           * In case of failure, recreate the deleted stream in case
0116           * we initiated the DELBA
0117           */
0118         if (!INITIATOR_BIT(del_ba_param_set))
0119             return 0;
0120 
0121         mwifiex_create_ba_tbl(priv, del_ba->peer_mac_addr, tid,
0122                       BA_SETUP_INPROGRESS);
0123 
0124         tx_ba_tbl = mwifiex_get_ba_status(priv, BA_SETUP_INPROGRESS);
0125 
0126         if (tx_ba_tbl)
0127             mwifiex_del_ba_tbl(priv, tx_ba_tbl->tid, tx_ba_tbl->ra,
0128                        TYPE_DELBA_SENT, true);
0129     }
0130 
0131     return 0;
0132 }
0133 
0134 /*
0135  * This function handles the command response of add a block
0136  * ack request.
0137  *
0138  * Handling includes changing the header fields to CPU formats, checking
0139  * the response success status and taking actions accordingly (delete the
0140  * BA stream table in case of failure).
0141  */
0142 int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
0143                   struct host_cmd_ds_command *resp)
0144 {
0145     int tid, tid_down;
0146     struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp;
0147     struct mwifiex_tx_ba_stream_tbl *tx_ba_tbl;
0148     struct mwifiex_ra_list_tbl *ra_list;
0149     u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set);
0150 
0151     add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn))
0152             & SSN_MASK);
0153 
0154     tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK)
0155            >> BLOCKACKPARAM_TID_POS;
0156 
0157     tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
0158     ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, add_ba_rsp->
0159         peer_mac_addr);
0160     if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) {
0161         if (ra_list) {
0162             ra_list->ba_status = BA_SETUP_NONE;
0163             ra_list->amsdu_in_ampdu = false;
0164         }
0165         mwifiex_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr,
0166                    TYPE_DELBA_SENT, true);
0167         if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT)
0168             priv->aggr_prio_tbl[tid].ampdu_ap =
0169                 BA_STREAM_NOT_ALLOWED;
0170         return 0;
0171     }
0172 
0173     tx_ba_tbl = mwifiex_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr);
0174     if (tx_ba_tbl) {
0175         mwifiex_dbg(priv->adapter, EVENT, "info: BA stream complete\n");
0176         tx_ba_tbl->ba_status = BA_SETUP_COMPLETE;
0177         if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) &&
0178             priv->add_ba_param.tx_amsdu &&
0179             (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
0180             tx_ba_tbl->amsdu = true;
0181         else
0182             tx_ba_tbl->amsdu = false;
0183         if (ra_list) {
0184             ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu;
0185             ra_list->ba_status = BA_SETUP_COMPLETE;
0186         }
0187     } else {
0188         mwifiex_dbg(priv->adapter, ERROR, "BA stream not created\n");
0189     }
0190 
0191     return 0;
0192 }
0193 
0194 /*
0195  * This function prepares command of reconfigure Tx buffer.
0196  *
0197  * Preparation includes -
0198  *      - Setting command ID, action and proper size
0199  *      - Setting Tx buffer size (for SET only)
0200  *      - Ensuring correct endian-ness
0201  */
0202 int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
0203                  struct host_cmd_ds_command *cmd, int cmd_action,
0204                  u16 *buf_size)
0205 {
0206     struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf;
0207     u16 action = (u16) cmd_action;
0208 
0209     cmd->command = cpu_to_le16(HostCmd_CMD_RECONFIGURE_TX_BUFF);
0210     cmd->size =
0211         cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN);
0212     tx_buf->action = cpu_to_le16(action);
0213     switch (action) {
0214     case HostCmd_ACT_GEN_SET:
0215         mwifiex_dbg(priv->adapter, CMD,
0216                 "cmd: set tx_buf=%d\n", *buf_size);
0217         tx_buf->buff_size = cpu_to_le16(*buf_size);
0218         break;
0219     case HostCmd_ACT_GEN_GET:
0220     default:
0221         tx_buf->buff_size = 0;
0222         break;
0223     }
0224     return 0;
0225 }
0226 
0227 /*
0228  * This function prepares command of AMSDU aggregation control.
0229  *
0230  * Preparation includes -
0231  *      - Setting command ID, action and proper size
0232  *      - Setting AMSDU control parameters (for SET only)
0233  *      - Ensuring correct endian-ness
0234  */
0235 int mwifiex_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd,
0236                 int cmd_action,
0237                 struct mwifiex_ds_11n_amsdu_aggr_ctrl *aa_ctrl)
0238 {
0239     struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl =
0240         &cmd->params.amsdu_aggr_ctrl;
0241     u16 action = (u16) cmd_action;
0242 
0243     cmd->command = cpu_to_le16(HostCmd_CMD_AMSDU_AGGR_CTRL);
0244     cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl)
0245                 + S_DS_GEN);
0246     amsdu_ctrl->action = cpu_to_le16(action);
0247     switch (action) {
0248     case HostCmd_ACT_GEN_SET:
0249         amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable);
0250         amsdu_ctrl->curr_buf_size = 0;
0251         break;
0252     case HostCmd_ACT_GEN_GET:
0253     default:
0254         amsdu_ctrl->curr_buf_size = 0;
0255         break;
0256     }
0257     return 0;
0258 }
0259 
0260 /*
0261  * This function prepares 11n configuration command.
0262  *
0263  * Preparation includes -
0264  *      - Setting command ID, action and proper size
0265  *      - Setting HT Tx capability and HT Tx information fields
0266  *      - Ensuring correct endian-ness
0267  */
0268 int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
0269             struct host_cmd_ds_command *cmd, u16 cmd_action,
0270             struct mwifiex_ds_11n_tx_cfg *txcfg)
0271 {
0272     struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg;
0273 
0274     cmd->command = cpu_to_le16(HostCmd_CMD_11N_CFG);
0275     cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN);
0276     htcfg->action = cpu_to_le16(cmd_action);
0277     htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap);
0278     htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo);
0279 
0280     if (priv->adapter->is_hw_11ac_capable)
0281         htcfg->misc_config = cpu_to_le16(txcfg->misc_config);
0282 
0283     return 0;
0284 }
0285 
0286 /*
0287  * This function appends an 11n TLV to a buffer.
0288  *
0289  * Buffer allocation is responsibility of the calling
0290  * function. No size validation is made here.
0291  *
0292  * The function fills up the following sections, if applicable -
0293  *      - HT capability IE
0294  *      - HT information IE (with channel list)
0295  *      - 20/40 BSS Coexistence IE
0296  *      - HT Extended Capabilities IE
0297  */
0298 int
0299 mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
0300                struct mwifiex_bssdescriptor *bss_desc,
0301                u8 **buffer)
0302 {
0303     struct mwifiex_ie_types_htcap *ht_cap;
0304     struct mwifiex_ie_types_htinfo *ht_info;
0305     struct mwifiex_ie_types_chan_list_param_set *chan_list;
0306     struct mwifiex_ie_types_2040bssco *bss_co_2040;
0307     struct mwifiex_ie_types_extcap *ext_cap;
0308     int ret_len = 0;
0309     struct ieee80211_supported_band *sband;
0310     struct ieee_types_header *hdr;
0311     u8 radio_type;
0312 
0313     if (!buffer || !*buffer)
0314         return ret_len;
0315 
0316     radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
0317     sband = priv->wdev.wiphy->bands[radio_type];
0318 
0319     if (bss_desc->bcn_ht_cap) {
0320         ht_cap = (struct mwifiex_ie_types_htcap *) *buffer;
0321         memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
0322         ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
0323         ht_cap->header.len =
0324                 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
0325         memcpy((u8 *) ht_cap + sizeof(struct mwifiex_ie_types_header),
0326                (u8 *)bss_desc->bcn_ht_cap,
0327                le16_to_cpu(ht_cap->header.len));
0328 
0329         mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
0330         /* Update HT40 capability from current channel information */
0331         if (bss_desc->bcn_ht_oper) {
0332             u8 ht_param = bss_desc->bcn_ht_oper->ht_param;
0333             u8 radio =
0334             mwifiex_band_to_radio_type(bss_desc->bss_band);
0335             int freq =
0336             ieee80211_channel_to_frequency(bss_desc->channel,
0337                                radio);
0338             struct ieee80211_channel *chan =
0339             ieee80211_get_channel(priv->adapter->wiphy, freq);
0340 
0341             switch (ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
0342             case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
0343                 if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) {
0344                     ht_cap->ht_cap.cap_info &=
0345                     cpu_to_le16
0346                     (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
0347                     ht_cap->ht_cap.cap_info &=
0348                     cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
0349                 }
0350                 break;
0351             case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
0352                 if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) {
0353                     ht_cap->ht_cap.cap_info &=
0354                     cpu_to_le16
0355                     (~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
0356                     ht_cap->ht_cap.cap_info &=
0357                     cpu_to_le16(~IEEE80211_HT_CAP_SGI_40);
0358                 }
0359                 break;
0360             }
0361         }
0362 
0363         *buffer += sizeof(struct mwifiex_ie_types_htcap);
0364         ret_len += sizeof(struct mwifiex_ie_types_htcap);
0365     }
0366 
0367     if (bss_desc->bcn_ht_oper) {
0368         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
0369             ht_info = (struct mwifiex_ie_types_htinfo *) *buffer;
0370             memset(ht_info, 0,
0371                    sizeof(struct mwifiex_ie_types_htinfo));
0372             ht_info->header.type =
0373                     cpu_to_le16(WLAN_EID_HT_OPERATION);
0374             ht_info->header.len =
0375                 cpu_to_le16(
0376                     sizeof(struct ieee80211_ht_operation));
0377 
0378             memcpy((u8 *) ht_info +
0379                    sizeof(struct mwifiex_ie_types_header),
0380                    (u8 *)bss_desc->bcn_ht_oper,
0381                    le16_to_cpu(ht_info->header.len));
0382 
0383             if (!(sband->ht_cap.cap &
0384                     IEEE80211_HT_CAP_SUP_WIDTH_20_40))
0385                 ht_info->ht_oper.ht_param &=
0386                     ~(IEEE80211_HT_PARAM_CHAN_WIDTH_ANY |
0387                     IEEE80211_HT_PARAM_CHA_SEC_OFFSET);
0388 
0389             *buffer += sizeof(struct mwifiex_ie_types_htinfo);
0390             ret_len += sizeof(struct mwifiex_ie_types_htinfo);
0391         }
0392 
0393         chan_list =
0394             (struct mwifiex_ie_types_chan_list_param_set *) *buffer;
0395         memset(chan_list, 0,
0396                sizeof(struct mwifiex_ie_types_chan_list_param_set));
0397         chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
0398         chan_list->header.len = cpu_to_le16(
0399             sizeof(struct mwifiex_ie_types_chan_list_param_set) -
0400             sizeof(struct mwifiex_ie_types_header));
0401         chan_list->chan_scan_param[0].chan_number =
0402             bss_desc->bcn_ht_oper->primary_chan;
0403         chan_list->chan_scan_param[0].radio_type =
0404             mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
0405 
0406         if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
0407             bss_desc->bcn_ht_oper->ht_param &
0408             IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)
0409             SET_SECONDARYCHAN(chan_list->chan_scan_param[0].
0410                       radio_type,
0411                       (bss_desc->bcn_ht_oper->ht_param &
0412                       IEEE80211_HT_PARAM_CHA_SEC_OFFSET));
0413 
0414         *buffer += sizeof(struct mwifiex_ie_types_chan_list_param_set);
0415         ret_len += sizeof(struct mwifiex_ie_types_chan_list_param_set);
0416     }
0417 
0418     if (bss_desc->bcn_bss_co_2040) {
0419         bss_co_2040 = (struct mwifiex_ie_types_2040bssco *) *buffer;
0420         memset(bss_co_2040, 0,
0421                sizeof(struct mwifiex_ie_types_2040bssco));
0422         bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040);
0423         bss_co_2040->header.len =
0424                cpu_to_le16(sizeof(bss_co_2040->bss_co_2040));
0425 
0426         memcpy((u8 *) bss_co_2040 +
0427                sizeof(struct mwifiex_ie_types_header),
0428                bss_desc->bcn_bss_co_2040 +
0429                sizeof(struct ieee_types_header),
0430                le16_to_cpu(bss_co_2040->header.len));
0431 
0432         *buffer += sizeof(struct mwifiex_ie_types_2040bssco);
0433         ret_len += sizeof(struct mwifiex_ie_types_2040bssco);
0434     }
0435 
0436     if (bss_desc->bcn_ext_cap) {
0437         hdr = (void *)bss_desc->bcn_ext_cap;
0438         ext_cap = (struct mwifiex_ie_types_extcap *) *buffer;
0439         memset(ext_cap, 0, sizeof(struct mwifiex_ie_types_extcap));
0440         ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
0441         ext_cap->header.len = cpu_to_le16(hdr->len);
0442 
0443         memcpy((u8 *)ext_cap->ext_capab,
0444                bss_desc->bcn_ext_cap + sizeof(struct ieee_types_header),
0445                le16_to_cpu(ext_cap->header.len));
0446 
0447         if (hdr->len > 3 &&
0448             ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED)
0449             priv->hs2_enabled = true;
0450         else
0451             priv->hs2_enabled = false;
0452 
0453         *buffer += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
0454         ret_len += sizeof(struct mwifiex_ie_types_extcap) + hdr->len;
0455     }
0456 
0457     return ret_len;
0458 }
0459 
0460 /*
0461  * This function checks if the given pointer is valid entry of
0462  * Tx BA Stream table.
0463  */
0464 static int mwifiex_is_tx_ba_stream_ptr_valid(struct mwifiex_private *priv,
0465                 struct mwifiex_tx_ba_stream_tbl *tx_tbl_ptr)
0466 {
0467     struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
0468 
0469     list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
0470         if (tx_ba_tsr_tbl == tx_tbl_ptr)
0471             return true;
0472     }
0473 
0474     return false;
0475 }
0476 
0477 /*
0478  * This function deletes the given entry in Tx BA Stream table.
0479  *
0480  * The function also performs a validity check on the supplied
0481  * pointer before trying to delete.
0482  */
0483 void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
0484                 struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl)
0485 {
0486     if (!tx_ba_tsr_tbl &&
0487         mwifiex_is_tx_ba_stream_ptr_valid(priv, tx_ba_tsr_tbl))
0488         return;
0489 
0490     mwifiex_dbg(priv->adapter, INFO,
0491             "info: tx_ba_tsr_tbl %p\n", tx_ba_tsr_tbl);
0492 
0493     list_del(&tx_ba_tsr_tbl->list);
0494 
0495     kfree(tx_ba_tsr_tbl);
0496 }
0497 
0498 /*
0499  * This function deletes all the entries in Tx BA Stream table.
0500  */
0501 void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv)
0502 {
0503     int i;
0504     struct mwifiex_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node;
0505 
0506     spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
0507     list_for_each_entry_safe(del_tbl_ptr, tmp_node,
0508                  &priv->tx_ba_stream_tbl_ptr, list)
0509         mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr);
0510     spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
0511 
0512     INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
0513 
0514     for (i = 0; i < MAX_NUM_TID; ++i)
0515         priv->aggr_prio_tbl[i].ampdu_ap =
0516             priv->aggr_prio_tbl[i].ampdu_user;
0517 }
0518 
0519 /*
0520  * This function returns the pointer to an entry in BA Stream
0521  * table which matches the given RA/TID pair.
0522  */
0523 struct mwifiex_tx_ba_stream_tbl *
0524 mwifiex_get_ba_tbl(struct mwifiex_private *priv, int tid, u8 *ra)
0525 {
0526     struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
0527 
0528     spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
0529     list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
0530         if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) &&
0531             tx_ba_tsr_tbl->tid == tid) {
0532             spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
0533             return tx_ba_tsr_tbl;
0534         }
0535     }
0536     spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
0537     return NULL;
0538 }
0539 
0540 /*
0541  * This function creates an entry in Tx BA stream table for the
0542  * given RA/TID pair.
0543  */
0544 void mwifiex_create_ba_tbl(struct mwifiex_private *priv, u8 *ra, int tid,
0545                enum mwifiex_ba_status ba_status)
0546 {
0547     struct mwifiex_tx_ba_stream_tbl *new_node;
0548     struct mwifiex_ra_list_tbl *ra_list;
0549     int tid_down;
0550 
0551     if (!mwifiex_get_ba_tbl(priv, tid, ra)) {
0552         new_node = kzalloc(sizeof(struct mwifiex_tx_ba_stream_tbl),
0553                    GFP_ATOMIC);
0554         if (!new_node)
0555             return;
0556 
0557         tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
0558         ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, ra);
0559         if (ra_list) {
0560             ra_list->ba_status = ba_status;
0561             ra_list->amsdu_in_ampdu = false;
0562         }
0563         INIT_LIST_HEAD(&new_node->list);
0564 
0565         new_node->tid = tid;
0566         new_node->ba_status = ba_status;
0567         memcpy(new_node->ra, ra, ETH_ALEN);
0568 
0569         spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
0570         list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr);
0571         spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
0572     }
0573 }
0574 
0575 /*
0576  * This function sends an add BA request to the given TID/RA pair.
0577  */
0578 int mwifiex_send_addba(struct mwifiex_private *priv, int tid, u8 *peer_mac)
0579 {
0580     struct host_cmd_ds_11n_addba_req add_ba_req;
0581     u32 tx_win_size = priv->add_ba_param.tx_win_size;
0582     static u8 dialog_tok;
0583     int ret;
0584     u16 block_ack_param_set;
0585 
0586     mwifiex_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid);
0587 
0588     memset(&add_ba_req, 0, sizeof(add_ba_req));
0589 
0590     if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
0591         ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
0592         priv->adapter->is_hw_11ac_capable &&
0593         memcmp(priv->cfg_bssid, peer_mac, ETH_ALEN)) {
0594         struct mwifiex_sta_node *sta_ptr;
0595 
0596         spin_lock_bh(&priv->sta_list_spinlock);
0597         sta_ptr = mwifiex_get_sta_entry(priv, peer_mac);
0598         if (!sta_ptr) {
0599             spin_unlock_bh(&priv->sta_list_spinlock);
0600             mwifiex_dbg(priv->adapter, ERROR,
0601                     "BA setup with unknown TDLS peer %pM!\n",
0602                     peer_mac);
0603             return -1;
0604         }
0605         if (sta_ptr->is_11ac_enabled)
0606             tx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_TXWINSIZE;
0607         spin_unlock_bh(&priv->sta_list_spinlock);
0608     }
0609 
0610     block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) |
0611                     tx_win_size << BLOCKACKPARAM_WINSIZE_POS |
0612                     IMMEDIATE_BLOCK_ACK);
0613 
0614     /* enable AMSDU inside AMPDU */
0615     if (priv->add_ba_param.tx_amsdu &&
0616         (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED))
0617         block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK;
0618 
0619     add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set);
0620     add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout);
0621 
0622     ++dialog_tok;
0623 
0624     if (dialog_tok == 0)
0625         dialog_tok = 1;
0626 
0627     add_ba_req.dialog_token = dialog_tok;
0628     memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN);
0629 
0630     /* We don't wait for the response of this command */
0631     ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_REQ,
0632                    0, 0, &add_ba_req, false);
0633 
0634     return ret;
0635 }
0636 
0637 /*
0638  * This function sends a delete BA request to the given TID/RA pair.
0639  */
0640 int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
0641                int initiator)
0642 {
0643     struct host_cmd_ds_11n_delba delba;
0644     int ret;
0645     uint16_t del_ba_param_set;
0646 
0647     memset(&delba, 0, sizeof(delba));
0648 
0649     del_ba_param_set = tid << DELBA_TID_POS;
0650 
0651     if (initiator)
0652         del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
0653     else
0654         del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
0655 
0656     delba.del_ba_param_set = cpu_to_le16(del_ba_param_set);
0657     memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
0658 
0659     /* We don't wait for the response of this command */
0660     ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA,
0661                    HostCmd_ACT_GEN_SET, 0, &delba, false);
0662 
0663     return ret;
0664 }
0665 
0666 /*
0667  * This function sends delba to specific tid
0668  */
0669 void mwifiex_11n_delba(struct mwifiex_private *priv, int tid)
0670 {
0671     struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr;
0672 
0673     spin_lock_bh(&priv->rx_reorder_tbl_lock);
0674     list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) {
0675         if (rx_reor_tbl_ptr->tid == tid) {
0676             dev_dbg(priv->adapter->dev,
0677                 "Send delba to tid=%d, %pM\n",
0678                 tid, rx_reor_tbl_ptr->ta);
0679             mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0);
0680             goto exit;
0681         }
0682     }
0683 exit:
0684     spin_unlock_bh(&priv->rx_reorder_tbl_lock);
0685 }
0686 
0687 /*
0688  * This function handles the command response of a delete BA request.
0689  */
0690 void mwifiex_11n_delete_ba_stream(struct mwifiex_private *priv, u8 *del_ba)
0691 {
0692     struct host_cmd_ds_11n_delba *cmd_del_ba =
0693         (struct host_cmd_ds_11n_delba *) del_ba;
0694     uint16_t del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set);
0695     int tid;
0696 
0697     tid = del_ba_param_set >> DELBA_TID_POS;
0698 
0699     mwifiex_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr,
0700                TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set));
0701 }
0702 
0703 /*
0704  * This function retrieves the Rx reordering table.
0705  */
0706 int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
0707                    struct mwifiex_ds_rx_reorder_tbl *buf)
0708 {
0709     int i;
0710     struct mwifiex_ds_rx_reorder_tbl *rx_reo_tbl = buf;
0711     struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr;
0712     int count = 0;
0713 
0714     spin_lock_bh(&priv->rx_reorder_tbl_lock);
0715     list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr,
0716                 list) {
0717         rx_reo_tbl->tid = (u16) rx_reorder_tbl_ptr->tid;
0718         memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN);
0719         rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win;
0720         rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size;
0721         for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) {
0722             if (rx_reorder_tbl_ptr->rx_reorder_ptr[i])
0723                 rx_reo_tbl->buffer[i] = true;
0724             else
0725                 rx_reo_tbl->buffer[i] = false;
0726         }
0727         rx_reo_tbl++;
0728         count++;
0729 
0730         if (count >= MWIFIEX_MAX_RX_BASTREAM_SUPPORTED)
0731             break;
0732     }
0733     spin_unlock_bh(&priv->rx_reorder_tbl_lock);
0734 
0735     return count;
0736 }
0737 
0738 /*
0739  * This function retrieves the Tx BA stream table.
0740  */
0741 int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
0742                  struct mwifiex_ds_tx_ba_stream_tbl *buf)
0743 {
0744     struct mwifiex_tx_ba_stream_tbl *tx_ba_tsr_tbl;
0745     struct mwifiex_ds_tx_ba_stream_tbl *rx_reo_tbl = buf;
0746     int count = 0;
0747 
0748     spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
0749     list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
0750         rx_reo_tbl->tid = (u16) tx_ba_tsr_tbl->tid;
0751         mwifiex_dbg(priv->adapter, DATA, "data: %s tid=%d\n",
0752                 __func__, rx_reo_tbl->tid);
0753         memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN);
0754         rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu;
0755         rx_reo_tbl++;
0756         count++;
0757         if (count >= MWIFIEX_MAX_TX_BASTREAM_SUPPORTED)
0758             break;
0759     }
0760     spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
0761 
0762     return count;
0763 }
0764 
0765 /*
0766  * This function retrieves the entry for specific tx BA stream table by RA and
0767  * deletes it.
0768  */
0769 void mwifiex_del_tx_ba_stream_tbl_by_ra(struct mwifiex_private *priv, u8 *ra)
0770 {
0771     struct mwifiex_tx_ba_stream_tbl *tbl, *tmp;
0772 
0773     if (!ra)
0774         return;
0775 
0776     spin_lock_bh(&priv->tx_ba_stream_tbl_lock);
0777     list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list)
0778         if (!memcmp(tbl->ra, ra, ETH_ALEN))
0779             mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, tbl);
0780     spin_unlock_bh(&priv->tx_ba_stream_tbl_lock);
0781 
0782     return;
0783 }
0784 
0785 /* This function initializes the BlockACK setup information for given
0786  * mwifiex_private structure.
0787  */
0788 void mwifiex_set_ba_params(struct mwifiex_private *priv)
0789 {
0790     priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT;
0791 
0792     if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
0793         priv->add_ba_param.tx_win_size =
0794                         MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
0795         priv->add_ba_param.rx_win_size =
0796                         MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE;
0797     } else {
0798         priv->add_ba_param.tx_win_size =
0799                         MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
0800         priv->add_ba_param.rx_win_size =
0801                         MWIFIEX_STA_AMPDU_DEF_RXWINSIZE;
0802     }
0803 
0804     priv->add_ba_param.tx_amsdu = true;
0805     priv->add_ba_param.rx_amsdu = true;
0806 
0807     return;
0808 }
0809 
0810 u8 mwifiex_get_sec_chan_offset(int chan)
0811 {
0812     u8 sec_offset;
0813 
0814     switch (chan) {
0815     case 36:
0816     case 44:
0817     case 52:
0818     case 60:
0819     case 100:
0820     case 108:
0821     case 116:
0822     case 124:
0823     case 132:
0824     case 140:
0825     case 149:
0826     case 157:
0827         sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
0828         break;
0829     case 40:
0830     case 48:
0831     case 56:
0832     case 64:
0833     case 104:
0834     case 112:
0835     case 120:
0836     case 128:
0837     case 136:
0838     case 144:
0839     case 153:
0840     case 161:
0841         sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
0842         break;
0843     case 165:
0844     default:
0845         sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
0846         break;
0847     }
0848 
0849     return sec_offset;
0850 }
0851 
0852 /* This function will send DELBA to entries in the priv's
0853  * Tx BA stream table
0854  */
0855 static void
0856 mwifiex_send_delba_txbastream_tbl(struct mwifiex_private *priv, u8 tid)
0857 {
0858     struct mwifiex_adapter *adapter = priv->adapter;
0859     struct mwifiex_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr;
0860 
0861     list_for_each_entry(tx_ba_stream_tbl_ptr,
0862                 &priv->tx_ba_stream_tbl_ptr, list) {
0863         if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) {
0864             if (tid == tx_ba_stream_tbl_ptr->tid) {
0865                 dev_dbg(adapter->dev,
0866                     "Tx:Send delba to tid=%d, %pM\n", tid,
0867                     tx_ba_stream_tbl_ptr->ra);
0868                 mwifiex_send_delba(priv,
0869                            tx_ba_stream_tbl_ptr->tid,
0870                            tx_ba_stream_tbl_ptr->ra, 1);
0871                 return;
0872             }
0873         }
0874     }
0875 }
0876 
0877 /* This function updates all the tx_win_size
0878  */
0879 void mwifiex_update_ampdu_txwinsize(struct mwifiex_adapter *adapter)
0880 {
0881     u8 i;
0882     u32 tx_win_size;
0883     struct mwifiex_private *priv;
0884 
0885     for (i = 0; i < adapter->priv_num; i++) {
0886         if (!adapter->priv[i])
0887             continue;
0888         priv = adapter->priv[i];
0889         tx_win_size = priv->add_ba_param.tx_win_size;
0890 
0891         if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
0892             priv->add_ba_param.tx_win_size =
0893                 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
0894 
0895         if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
0896             priv->add_ba_param.tx_win_size =
0897                 MWIFIEX_STA_AMPDU_DEF_TXWINSIZE;
0898 
0899         if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP)
0900             priv->add_ba_param.tx_win_size =
0901                 MWIFIEX_UAP_AMPDU_DEF_TXWINSIZE;
0902 
0903         if (adapter->coex_win_size) {
0904             if (adapter->coex_tx_win_size)
0905                 priv->add_ba_param.tx_win_size =
0906                     adapter->coex_tx_win_size;
0907         }
0908 
0909         if (tx_win_size != priv->add_ba_param.tx_win_size) {
0910             if (!priv->media_connected)
0911                 continue;
0912             for (i = 0; i < MAX_NUM_TID; i++)
0913                 mwifiex_send_delba_txbastream_tbl(priv, i);
0914         }
0915     }
0916 }
[ Source navigation ] [ Diff markup ] [ Identifier search ] [ general search ]

This page was automatically generated by the 2.1.0 LXR engine.

The LXR team
Valid CSS 2.1! Valid HTML 4.01!