int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif, struct ieee80211_sta *sta, u16 tid, u8 buf_size) { struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); unsigned long flags; u16 ssn; buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); spin_lock_irqsave(&priv->shrd->sta_lock, flags); ssn = priv->tid_data[sta_priv->sta_id][tid].agg.ssn; spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, sta_priv->sta_id, tid, buf_size, ssn); /* * If the limit is 0, then it wasn't initialised yet, * use the default. We can do that since we take the * minimum below, and we don't want to go above our * default due to hardware restrictions. */ if (sta_priv->max_agg_bufsize == 0) sta_priv->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; /* * Even though in theory the peer could have different * aggregation reorder buffer sizes for different sessions, * our ucode doesn't allow for that and has a global limit * for each station. Therefore, use the minimum of all the * aggregation sessions and our default value. */ sta_priv->max_agg_bufsize = min(sta_priv->max_agg_bufsize, buf_size); if (cfg(priv)->ht_params && cfg(priv)->ht_params->use_rts_for_aggregation) { /* * switch to RTS/CTS if it is the prefer protection * method for HT traffic */ sta_priv->lq_sta.lq.general_params.flags |= LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; } priv->agg_tids_count++; IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", priv->agg_tids_count); sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = sta_priv->max_agg_bufsize; IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n", sta->addr, tid); return iwl_send_lq_cmd(priv, ctx, &sta_priv->lq_sta.lq, CMD_ASYNC, false); }
/** * Program the device to use fixed rate for frame transmit * This is for debugging/testing only * once the device start use fixed rate, we need to reload the module * to being back the normal operation. */ static void rs_program_fix_rate(struct iwl_priv *priv, struct iwl_lq_sta *lq_sta) { struct iwl_station_priv *sta_priv = container_of(lq_sta, struct iwl_station_priv, lq_sta); struct iwl_rxon_context *ctx = sta_priv->ctx; lq_sta->active_legacy_rate = 0x0FFF; /* 1 - 54 MBits, includes CCK */ lq_sta->active_siso_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ lq_sta->active_mimo2_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ lq_sta->active_mimo3_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */ #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE /* testmode has higher priority to overwirte the fixed rate */ if (priv->tm_fixed_rate) lq_sta->dbg_fixed_rate = priv->tm_fixed_rate; #endif IWL_DEBUG_RATE(priv, "sta_id %d rate 0x%X\n", lq_sta->lq.sta_id, lq_sta->dbg_fixed_rate); if (lq_sta->dbg_fixed_rate) { rs_fill_link_cmd(NULL, lq_sta, lq_sta->dbg_fixed_rate); iwl_send_lq_cmd(lq_sta->drv, ctx, &lq_sta->lq, CMD_ASYNC, false); } }
/* * iwlagn_add_bssid_station - Add the special IBSS BSSID station * * Function sleeps. */ int iwlagn_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, const u8 *addr, u8 *sta_id_r) { int ret; u8 sta_id; struct iwl_link_quality_cmd *link_cmd; unsigned long flags; if (sta_id_r) *sta_id_r = IWL_INVALID_STATION; ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); if (ret) { IWL_ERR(priv, "Unable to add station %pM\n", addr); return ret; } if (sta_id_r) *sta_id_r = sta_id; spin_lock_irqsave(&priv->shrd->sta_lock, flags); priv->stations[sta_id].used |= IWL_STA_LOCAL; spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); /* Set up default rate scaling table in device's station table */ link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); if (!link_cmd) { IWL_ERR(priv, "Unable to initialize rate scaling for station %pM.\n", addr); return -ENOMEM; } ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true); if (ret) IWL_ERR(priv, "Link quality command failed (%d)\n", ret); spin_lock_irqsave(&priv->shrd->sta_lock, flags); priv->stations[sta_id].lq = link_cmd; spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); return 0; }
void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { unsigned long flags; int sta_id = ctx->ap_sta_id; int ret; struct iwl_addsta_cmd sta_cmd; struct iwl_link_quality_cmd lq; bool active; spin_lock_irqsave(&priv->sta_lock, flags); if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { spin_unlock_irqrestore(&priv->sta_lock, flags); return; } memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); sta_cmd.mode = 0; memcpy(&lq, priv->stations[sta_id].lq, sizeof(lq)); active = priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE; priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; spin_unlock_irqrestore(&priv->sta_lock, flags); if (active) { ret = iwl_send_remove_station( priv, priv->stations[sta_id].sta.sta.addr, sta_id, true); if (ret) IWL_ERR(priv, "failed to remove STA %pM (%d)\n", priv->stations[sta_id].sta.sta.addr, ret); } spin_lock_irqsave(&priv->sta_lock, flags); priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; spin_unlock_irqrestore(&priv->sta_lock, flags); ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); if (ret) IWL_ERR(priv, "failed to re-add STA %pM (%d)\n", priv->stations[sta_id].sta.sta.addr, ret); iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true); }
/** * iwl_restore_stations() - Restore driver known stations to device * * All stations considered active by driver, but not present in ucode, is * restored. * * Function sleeps. */ void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { struct iwl_addsta_cmd sta_cmd; struct iwl_link_quality_cmd lq; unsigned long flags_spin; int i; bool found = false; int ret; bool send_lq; if (!iwl_is_ready(priv)) { IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n"); return; } IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); spin_lock_irqsave(&priv->sta_lock, flags_spin); for (i = 0; i < priv->hw_params.max_stations; i++) { if (ctx->ctxid != priv->stations[i].ctxid) continue; if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", priv->stations[i].sta.sta.addr); priv->stations[i].sta.mode = 0; priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; found = true; } } for (i = 0; i < priv->hw_params.max_stations; i++) { if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { memcpy(&sta_cmd, &priv->stations[i].sta, sizeof(struct iwl_addsta_cmd)); send_lq = false; if (priv->stations[i].lq) { memcpy(&lq, priv->stations[i].lq, sizeof(struct iwl_link_quality_cmd)); send_lq = true; } spin_unlock_irqrestore(&priv->sta_lock, flags_spin); ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); if (ret) { spin_lock_irqsave(&priv->sta_lock, flags_spin); IWL_ERR(priv, "Adding station %pM failed.\n", priv->stations[i].sta.sta.addr); priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE; priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; spin_unlock_irqrestore(&priv->sta_lock, flags_spin); } /* * Rate scaling has already been initialized, send * current LQ command */ if (send_lq) iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true); spin_lock_irqsave(&priv->sta_lock, flags_spin); priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; } } spin_unlock_irqrestore(&priv->sta_lock, flags_spin); if (!found) IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n"); else IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n"); }