diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-sta.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-sta.c | 725 |
1 files changed, 13 insertions, 712 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c index 6edd0341dfe2..7c7f7dcb1b1e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-sta.c +++ b/drivers/net/wireless/iwlwifi/iwl-sta.c @@ -228,9 +228,8 @@ static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, * * should be called with sta_lock held */ -static u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, - const u8 *addr, bool is_ap, - struct ieee80211_sta *sta) +u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, + const u8 *addr, bool is_ap, struct ieee80211_sta *sta) { struct iwl_station_entry *station; int i; @@ -317,6 +316,7 @@ static u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, return sta_id; } +EXPORT_SYMBOL_GPL(iwl_prep_station); #define STA_WAIT_TIMEOUT (HZ/2) @@ -381,108 +381,6 @@ int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, } EXPORT_SYMBOL(iwl_add_station_common); -static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv, - u8 sta_id) -{ - int i, r; - struct iwl_link_quality_cmd *link_cmd; - u32 rate_flags = 0; - __le32 rate_n_flags; - - link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); - if (!link_cmd) { - IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); - return NULL; - } - /* Set up the rate scaling to start at selected rate, fall back - * all the way down to 1M in IEEE order, and then spin on 1M */ - if (priv->band == IEEE80211_BAND_5GHZ) - r = IWL_RATE_6M_INDEX; - else - r = IWL_RATE_1M_INDEX; - - if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) - rate_flags |= RATE_MCS_CCK_MSK; - - rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) << - RATE_MCS_ANT_POS; - rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); - for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) - link_cmd->rs_table[i].rate_n_flags = rate_n_flags; - - link_cmd->general_params.single_stream_ant_msk = - first_antenna(priv->hw_params.valid_tx_ant); - - link_cmd->general_params.dual_stream_ant_msk = - priv->hw_params.valid_tx_ant & - ~first_antenna(priv->hw_params.valid_tx_ant); - if (!link_cmd->general_params.dual_stream_ant_msk) { - link_cmd->general_params.dual_stream_ant_msk = ANT_AB; - } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) { - link_cmd->general_params.dual_stream_ant_msk = - priv->hw_params.valid_tx_ant; - } - - link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF; - link_cmd->agg_params.agg_time_limit = - cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); - - link_cmd->sta_id = sta_id; - - return link_cmd; -} - -/* - * iwl_add_bssid_station - Add the special IBSS BSSID station - * - * Function sleeps. - */ -int iwl_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, - const u8 *addr, bool init_rs, 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->sta_lock, flags); - priv->stations[sta_id].used |= IWL_STA_LOCAL; - spin_unlock_irqrestore(&priv->sta_lock, flags); - - if (init_rs) { - /* Set up default rate scaling table in device's station table */ - link_cmd = iwl_sta_alloc_lq(priv, 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->sta_lock, flags); - priv->stations[sta_id].lq = link_cmd; - spin_unlock_irqrestore(&priv->sta_lock, flags); - } - - return 0; -} -EXPORT_SYMBOL(iwl_add_bssid_station); - /** * iwl_sta_ucode_deactivate - deactivate ucode status for a station * @@ -738,405 +636,25 @@ int iwl_get_free_ucode_key_index(struct iwl_priv *priv) } EXPORT_SYMBOL(iwl_get_free_ucode_key_index); -static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - bool send_if_empty) -{ - int i, not_empty = 0; - u8 buff[sizeof(struct iwl_wep_cmd) + - sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; - struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; - size_t cmd_size = sizeof(struct iwl_wep_cmd); - struct iwl_host_cmd cmd = { - .id = ctx->wep_key_cmd, - .data = wep_cmd, - .flags = CMD_SYNC, - }; - - might_sleep(); - - memset(wep_cmd, 0, cmd_size + - (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); - - for (i = 0; i < WEP_KEYS_MAX ; i++) { - wep_cmd->key[i].key_index = i; - if (ctx->wep_keys[i].key_size) { - wep_cmd->key[i].key_offset = i; - not_empty = 1; - } else { - wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; - } - - wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; - memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, - ctx->wep_keys[i].key_size); - } - - wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; - wep_cmd->num_keys = WEP_KEYS_MAX; - - cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; - - cmd.len = cmd_size; - - if (not_empty || send_if_empty) - return iwl_send_cmd(priv, &cmd); - else - return 0; -} - -int iwl_restore_default_wep_keys(struct iwl_priv *priv, - struct iwl_rxon_context *ctx) -{ - lockdep_assert_held(&priv->mutex); - - return iwl_send_static_wepkey_cmd(priv, ctx, false); -} -EXPORT_SYMBOL(iwl_restore_default_wep_keys); - -int iwl_remove_default_wep_key(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - struct ieee80211_key_conf *keyconf) -{ - int ret; - - lockdep_assert_held(&priv->mutex); - - IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", - keyconf->keyidx); - - memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); - if (iwl_is_rfkill(priv)) { - IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n"); - /* but keys in device are clear anyway so return success */ - return 0; - } - ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); - IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", - keyconf->keyidx, ret); - - return ret; -} -EXPORT_SYMBOL(iwl_remove_default_wep_key); - -int iwl_set_default_wep_key(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - struct ieee80211_key_conf *keyconf) -{ - int ret; - - lockdep_assert_held(&priv->mutex); - - if (keyconf->keylen != WEP_KEY_LEN_128 && - keyconf->keylen != WEP_KEY_LEN_64) { - IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen); - return -EINVAL; - } - - keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; - keyconf->hw_key_idx = HW_KEY_DEFAULT; - priv->stations[ctx->ap_sta_id].keyinfo.cipher = keyconf->cipher; - - ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; - memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, - keyconf->keylen); - - ret = iwl_send_static_wepkey_cmd(priv, ctx, false); - IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", - keyconf->keylen, keyconf->keyidx, ret); - - return ret; -} -EXPORT_SYMBOL(iwl_set_default_wep_key); - -static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - struct ieee80211_key_conf *keyconf, - u8 sta_id) -{ - unsigned long flags; - __le16 key_flags = 0; - struct iwl_addsta_cmd sta_cmd; - - lockdep_assert_held(&priv->mutex); - - keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; - - key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK); - key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); - key_flags &= ~STA_KEY_FLG_INVALID; - - if (keyconf->keylen == WEP_KEY_LEN_128) - key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; - - if (sta_id == ctx->bcast_sta_id) - key_flags |= STA_KEY_MULTICAST_MSK; - - spin_lock_irqsave(&priv->sta_lock, flags); - - priv->stations[sta_id].keyinfo.cipher = keyconf->cipher; - priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; - priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx; - - memcpy(priv->stations[sta_id].keyinfo.key, - keyconf->key, keyconf->keylen); - - memcpy(&priv->stations[sta_id].sta.key.key[3], - keyconf->key, keyconf->keylen); - - if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) - == STA_KEY_FLG_NO_ENC) - priv->stations[sta_id].sta.key.key_offset = - iwl_get_free_ucode_key_index(priv); - /* else, we are overriding an existing key => no need to allocated room - * in uCode. */ - - WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, - "no space for a new key"); - - priv->stations[sta_id].sta.key.key_flags = key_flags; - priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - - memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); - spin_unlock_irqrestore(&priv->sta_lock, flags); - - return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); -} - -static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - struct ieee80211_key_conf *keyconf, - u8 sta_id) -{ - unsigned long flags; - __le16 key_flags = 0; - struct iwl_addsta_cmd sta_cmd; - - lockdep_assert_held(&priv->mutex); - - key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); - key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); - key_flags &= ~STA_KEY_FLG_INVALID; - - if (sta_id == ctx->bcast_sta_id) - key_flags |= STA_KEY_MULTICAST_MSK; - - keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; - - spin_lock_irqsave(&priv->sta_lock, flags); - priv->stations[sta_id].keyinfo.cipher = keyconf->cipher; - priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; - - memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, - keyconf->keylen); - - memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, - keyconf->keylen); - - if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) - == STA_KEY_FLG_NO_ENC) - priv->stations[sta_id].sta.key.key_offset = - iwl_get_free_ucode_key_index(priv); - /* else, we are overriding an existing key => no need to allocated room - * in uCode. */ - - WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, - "no space for a new key"); - - priv->stations[sta_id].sta.key.key_flags = key_flags; - priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - - memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); - spin_unlock_irqrestore(&priv->sta_lock, flags); - - return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); -} - -static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - struct ieee80211_key_conf *keyconf, - u8 sta_id) -{ - unsigned long flags; - int ret = 0; - __le16 key_flags = 0; - - key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK); - key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); - key_flags &= ~STA_KEY_FLG_INVALID; - - if (sta_id == ctx->bcast_sta_id) - key_flags |= STA_KEY_MULTICAST_MSK; - - keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; - keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; - - spin_lock_irqsave(&priv->sta_lock, flags); - - priv->stations[sta_id].keyinfo.cipher = keyconf->cipher; - priv->stations[sta_id].keyinfo.keylen = 16; - - if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) - == STA_KEY_FLG_NO_ENC) - priv->stations[sta_id].sta.key.key_offset = - iwl_get_free_ucode_key_index(priv); - /* else, we are overriding an existing key => no need to allocated room - * in uCode. */ - - WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, - "no space for a new key"); - - priv->stations[sta_id].sta.key.key_flags = key_flags; - - - /* This copy is acutally not needed: we get the key with each TX */ - memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16); - - memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16); - - spin_unlock_irqrestore(&priv->sta_lock, flags); - - return ret; -} - -void iwl_update_tkip_key(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - struct ieee80211_key_conf *keyconf, - struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) +void iwl_dealloc_bcast_stations(struct iwl_priv *priv) { - u8 sta_id; unsigned long flags; int i; - if (iwl_scan_cancel(priv)) { - /* cancel scan failed, just live w/ bad key and rely - briefly on SW decryption */ - return; - } - - sta_id = iwl_sta_id_or_broadcast(priv, ctx, sta); - if (sta_id == IWL_INVALID_STATION) - return; - - spin_lock_irqsave(&priv->sta_lock, flags); - - priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32; - - for (i = 0; i < 5; i++) - priv->stations[sta_id].sta.key.tkip_rx_ttak[i] = - cpu_to_le16(phase1key[i]); - - priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - - iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); - - spin_unlock_irqrestore(&priv->sta_lock, flags); - -} -EXPORT_SYMBOL(iwl_update_tkip_key); - -int iwl_remove_dynamic_key(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - struct ieee80211_key_conf *keyconf, - u8 sta_id) -{ - unsigned long flags; - u16 key_flags; - u8 keyidx; - struct iwl_addsta_cmd sta_cmd; - - lockdep_assert_held(&priv->mutex); - - ctx->key_mapping_keys--; - spin_lock_irqsave(&priv->sta_lock, flags); - key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags); - keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3; - - IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", - keyconf->keyidx, sta_id); - - if (keyconf->keyidx != keyidx) { - /* We need to remove a key with index different that the one - * in the uCode. This means that the key we need to remove has - * been replaced by another one with different index. - * Don't do anything and return ok - */ - spin_unlock_irqrestore(&priv->sta_lock, flags); - return 0; - } - - if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) { - IWL_WARN(priv, "Removing wrong key %d 0x%x\n", - keyconf->keyidx, key_flags); - spin_unlock_irqrestore(&priv->sta_lock, flags); - return 0; - } + for (i = 0; i < priv->hw_params.max_stations; i++) { + if (!(priv->stations[i].used & IWL_STA_BCAST)) + continue; - if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset, - &priv->ucode_key_table)) - IWL_ERR(priv, "index %d not used in uCode key table.\n", - priv->stations[sta_id].sta.key.key_offset); - memset(&priv->stations[sta_id].keyinfo, 0, - sizeof(struct iwl_hw_key)); - memset(&priv->stations[sta_id].sta.key, 0, - sizeof(struct iwl4965_keyinfo)); - priv->stations[sta_id].sta.key.key_flags = - STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID; - priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET; - priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; - priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - - if (iwl_is_rfkill(priv)) { - IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled.\n"); - spin_unlock_irqrestore(&priv->sta_lock, flags); - return 0; + priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; + priv->num_stations--; + BUG_ON(priv->num_stations < 0); + kfree(priv->stations[i].lq); + priv->stations[i].lq = NULL; } - memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); spin_unlock_irqrestore(&priv->sta_lock, flags); - - return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); -} -EXPORT_SYMBOL(iwl_remove_dynamic_key); - -int iwl_set_dynamic_key(struct iwl_priv *priv, struct iwl_rxon_context *ctx, - struct ieee80211_key_conf *keyconf, u8 sta_id) -{ - int ret; - - lockdep_assert_held(&priv->mutex); - - ctx->key_mapping_keys++; - keyconf->hw_key_idx = HW_KEY_DYNAMIC; - - switch (keyconf->cipher) { - case WLAN_CIPHER_SUITE_CCMP: - ret = iwl_set_ccmp_dynamic_key_info(priv, ctx, keyconf, sta_id); - break; - case WLAN_CIPHER_SUITE_TKIP: - ret = iwl_set_tkip_dynamic_key_info(priv, ctx, keyconf, sta_id); - break; - case WLAN_CIPHER_SUITE_WEP40: - case WLAN_CIPHER_SUITE_WEP104: - ret = iwl_set_wep_dynamic_key_info(priv, ctx, keyconf, sta_id); - break; - default: - IWL_ERR(priv, - "Unknown alg: %s cipher = %x\n", __func__, - keyconf->cipher); - ret = -EINVAL; - } - - IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%d ret=%d\n", - keyconf->cipher, keyconf->keylen, keyconf->keyidx, - sta_id, ret); - - return ret; } -EXPORT_SYMBOL(iwl_set_dynamic_key); +EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_stations); #ifdef CONFIG_IWLWIFI_DEBUG static void iwl_dump_lq_cmd(struct iwl_priv *priv, @@ -1240,223 +758,6 @@ int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, } EXPORT_SYMBOL(iwl_send_lq_cmd); -/** - * iwl_alloc_bcast_station - add broadcast station into driver's station table. - * - * This adds the broadcast station into the driver's station table - * and marks it driver active, so that it will be restored to the - * device at the next best time. - */ -int iwl_alloc_bcast_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, - bool init_lq) -{ - struct iwl_link_quality_cmd *link_cmd; - unsigned long flags; - u8 sta_id; - - spin_lock_irqsave(&priv->sta_lock, flags); - sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); - if (sta_id == IWL_INVALID_STATION) { - IWL_ERR(priv, "Unable to prepare broadcast station\n"); - spin_unlock_irqrestore(&priv->sta_lock, flags); - - return -EINVAL; - } - - priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; - priv->stations[sta_id].used |= IWL_STA_BCAST; - spin_unlock_irqrestore(&priv->sta_lock, flags); - - if (init_lq) { - link_cmd = iwl_sta_alloc_lq(priv, sta_id); - if (!link_cmd) { - IWL_ERR(priv, - "Unable to initialize rate scaling for bcast station.\n"); - return -ENOMEM; - } - - spin_lock_irqsave(&priv->sta_lock, flags); - priv->stations[sta_id].lq = link_cmd; - spin_unlock_irqrestore(&priv->sta_lock, flags); - } - - return 0; -} -EXPORT_SYMBOL_GPL(iwl_alloc_bcast_station); - -/** - * iwl_update_bcast_station - update broadcast station's LQ command - * - * Only used by iwlagn. Placed here to have all bcast station management - * code together. - */ -static int iwl_update_bcast_station(struct iwl_priv *priv, - struct iwl_rxon_context *ctx) -{ - unsigned long flags; - struct iwl_link_quality_cmd *link_cmd; - u8 sta_id = ctx->bcast_sta_id; - - link_cmd = iwl_sta_alloc_lq(priv, sta_id); - if (!link_cmd) { - IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); - return -ENOMEM; - } - - spin_lock_irqsave(&priv->sta_lock, flags); - if (priv->stations[sta_id].lq) - kfree(priv->stations[sta_id].lq); - else - IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); - priv->stations[sta_id].lq = link_cmd; - spin_unlock_irqrestore(&priv->sta_lock, flags); - - return 0; -} - -int iwl_update_bcast_stations(struct iwl_priv *priv) -{ - struct iwl_rxon_context *ctx; - int ret = 0; - - for_each_context(priv, ctx) { - ret = iwl_update_bcast_station(priv, ctx); - if (ret) - break; - } - - return ret; -} -EXPORT_SYMBOL_GPL(iwl_update_bcast_stations); - -void iwl_dealloc_bcast_stations(struct iwl_priv *priv) -{ - unsigned long flags; - int i; - - spin_lock_irqsave(&priv->sta_lock, flags); - for (i = 0; i < priv->hw_params.max_stations; i++) { - if (!(priv->stations[i].used & IWL_STA_BCAST)) - continue; - - priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; - priv->num_stations--; - BUG_ON(priv->num_stations < 0); - kfree(priv->stations[i].lq); - priv->stations[i].lq = NULL; - } - spin_unlock_irqrestore(&priv->sta_lock, flags); -} -EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_stations); - -/** - * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table - */ -int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) -{ - unsigned long flags; - struct iwl_addsta_cmd sta_cmd; - - lockdep_assert_held(&priv->mutex); - - /* Remove "disable" flag, to enable Tx for this TID */ - spin_lock_irqsave(&priv->sta_lock, flags); - priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; - priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); - priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); - spin_unlock_irqrestore(&priv->sta_lock, flags); - - return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); -} -EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid); - -int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, - int tid, u16 ssn) -{ - unsigned long flags; - int sta_id; - struct iwl_addsta_cmd sta_cmd; - - lockdep_assert_held(&priv->mutex); - - sta_id = iwl_sta_id(sta); - if (sta_id == IWL_INVALID_STATION) - return -ENXIO; - - spin_lock_irqsave(&priv->sta_lock, flags); - priv->stations[sta_id].sta.station_flags_msk = 0; - priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; - priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; - priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); - priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); - spin_unlock_irqrestore(&priv->sta_lock, flags); - - return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); -} -EXPORT_SYMBOL(iwl_sta_rx_agg_start); - -int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, - int tid) -{ - unsigned long flags; - int sta_id; - struct iwl_addsta_cmd sta_cmd; - - lockdep_assert_held(&priv->mutex); - - sta_id = iwl_sta_id(sta); - if (sta_id == IWL_INVALID_STATION) { - IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); - return -ENXIO; - } - - spin_lock_irqsave(&priv->sta_lock, flags); - priv->stations[sta_id].sta.station_flags_msk = 0; - priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; - priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; - priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); - spin_unlock_irqrestore(&priv->sta_lock, flags); - - return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); -} -EXPORT_SYMBOL(iwl_sta_rx_agg_stop); - -void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) -{ - unsigned long flags; - - spin_lock_irqsave(&priv->sta_lock, flags); - priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK; - priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; - priv->stations[sta_id].sta.sta.modify_mask = 0; - priv->stations[sta_id].sta.sleep_tx_count = 0; - priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); - spin_unlock_irqrestore(&priv->sta_lock, flags); - -} -EXPORT_SYMBOL(iwl_sta_modify_ps_wake); - -void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) -{ - unsigned long flags; - - spin_lock_irqsave(&priv->sta_lock, flags); - priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK; - priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; - priv->stations[sta_id].sta.sta.modify_mask = - STA_MODIFY_SLEEP_TX_COUNT_MSK; - priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt); - priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; - iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); - spin_unlock_irqrestore(&priv->sta_lock, flags); - -} -EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count); - int iwl_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) |
