diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 42 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-commands.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-debugfs.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 10 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-rx.c | 17 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-sta.c | 29 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-sta.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-tx.c | 51 |
8 files changed, 113 insertions, 42 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 1c6506529b6..6385cdf24d1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -2744,6 +2744,45 @@ static int iwl_mac_get_stats(struct ieee80211_hw *hw, return 0; } +static void iwl_mac_sta_notify(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + enum sta_notify_cmd cmd, + struct ieee80211_sta *sta) +{ + struct iwl_priv *priv = hw->priv; + struct iwl_station_priv *sta_priv = (void *)sta->drv_priv; + int sta_id; + + /* + * TODO: We really should use this callback to + * actually maintain the station table in + * the device. + */ + + switch (cmd) { + case STA_NOTIFY_ADD: + atomic_set(&sta_priv->pending_frames, 0); + if (vif->type == NL80211_IFTYPE_AP) + sta_priv->client = true; + break; + case STA_NOTIFY_SLEEP: + WARN_ON(!sta_priv->client); + sta_priv->asleep = true; + if (atomic_read(&sta_priv->pending_frames) > 0) + ieee80211_sta_block_awake(hw, sta, true); + break; + case STA_NOTIFY_AWAKE: + WARN_ON(!sta_priv->client); + sta_priv->asleep = false; + sta_id = iwl_find_station(priv, sta->addr); + if (sta_id != IWL_INVALID_STATION) + iwl_sta_modify_ps_wake(priv, sta_id); + break; + default: + break; + } +} + /***************************************************************************** * * sysfs attributes @@ -3175,7 +3214,8 @@ static struct ieee80211_ops iwl_hw_ops = { .reset_tsf = iwl_mac_reset_tsf, .bss_info_changed = iwl_bss_info_changed, .ampdu_action = iwl_mac_ampdu_action, - .hw_scan = iwl_mac_hw_scan + .hw_scan = iwl_mac_hw_scan, + .sta_notify = iwl_mac_sta_notify, }; static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h index aa4e38cbf07..e9150753192 100644 --- a/drivers/net/wireless/iwlwifi/iwl-commands.h +++ b/drivers/net/wireless/iwlwifi/iwl-commands.h @@ -977,6 +977,7 @@ struct iwl_qosparam_cmd { #define STA_MODIFY_TX_RATE_MSK 0x04 #define STA_MODIFY_ADDBA_TID_MSK 0x08 #define STA_MODIFY_DELBA_TID_MSK 0x10 +#define STA_MODIFY_SLEEP_TX_COUNT_MSK 0x20 /* Receiver address (actually, Rx station's index into station table), * combined with Traffic ID (QOS priority), in format used by Tx Scheduler */ diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c index ba9c96ff27c..9a5ca25d72c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c +++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c @@ -336,8 +336,6 @@ static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf, pos += scnprintf(buf + pos, bufsz - pos, "flags: 0x%x\n", station->sta.station_flags_msk); - pos += scnprintf(buf + pos, bufsz - pos, - "ps_status: %u\n", station->ps_status); pos += scnprintf(buf + pos, bufsz - pos, "tid data:\n"); pos += scnprintf(buf + pos, bufsz - pos, "seq_num\t\ttxq_id"); diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index a474383ec0b..f1601cfebc2 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -545,15 +545,11 @@ struct iwl_qos_info { struct iwl_qosparam_cmd def_qos_parm; }; -#define STA_PS_STATUS_WAKE 0 -#define STA_PS_STATUS_SLEEP 1 - struct iwl3945_station_entry { struct iwl3945_addsta_cmd sta; struct iwl_tid_data tid[MAX_TID_COUNT]; u8 used; - u8 ps_status; struct iwl_hw_key keyinfo; }; @@ -561,7 +557,6 @@ struct iwl_station_entry { struct iwl_addsta_cmd sta; struct iwl_tid_data tid[MAX_TID_COUNT]; u8 used; - u8 ps_status; struct iwl_hw_key keyinfo; }; @@ -571,11 +566,12 @@ struct iwl_station_entry { * When mac80211 creates a station it reserves some space (hw->sta_data_size) * in the structure for use by driver. This structure is places in that * space. - * - * At the moment use it for the station's rate scaling information. */ struct iwl_station_priv { struct iwl_lq_sta lq_sta; + atomic_t pending_frames; + bool client; + bool asleep; }; /* one for each uCode image (inst/data, boot/init/runtime) */ diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c index 9d010a0d83a..cc980d5d57c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-rx.c @@ -1028,7 +1028,6 @@ void iwl_rx_reply_rx(struct iwl_priv *priv, struct iwl4965_rx_mpdu_res_start *amsdu; u32 len; u32 ampdu_status; - u16 fc; u32 rate_n_flags; /** @@ -1161,20 +1160,8 @@ void iwl_rx_reply_rx(struct iwl_priv *priv, priv->last_tsf = le64_to_cpu(phy_res->timestamp); } - fc = le16_to_cpu(header->frame_control); - switch (fc & IEEE80211_FCTL_FTYPE) { - case IEEE80211_FTYPE_MGMT: - case IEEE80211_FTYPE_DATA: - if (priv->iw_mode == NL80211_IFTYPE_AP) - iwl_update_ps_mode(priv, fc & IEEE80211_FCTL_PM, - header->addr2); - /* fall through */ - default: - iwl_pass_packet_to_mac80211(priv, header, len, ampdu_status, - rxb, &rx_status); - break; - - } + iwl_pass_packet_to_mac80211(priv, header, len, ampdu_status, + rxb, &rx_status); } EXPORT_SYMBOL(iwl_rx_reply_rx); diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c index eba36f73738..cd6a6901216 100644 --- a/drivers/net/wireless/iwlwifi/iwl-sta.c +++ b/drivers/net/wireless/iwlwifi/iwl-sta.c @@ -1216,7 +1216,7 @@ int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid) } EXPORT_SYMBOL(iwl_sta_rx_agg_stop); -static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) +void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) { unsigned long flags; @@ -1224,27 +1224,26 @@ static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) 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; spin_unlock_irqrestore(&priv->sta_lock, flags); iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); } +EXPORT_SYMBOL(iwl_sta_modify_ps_wake); -void iwl_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr) +void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) { - /* FIXME: need locking over ps_status ??? */ - u8 sta_id = iwl_find_station(priv, addr); + unsigned long flags; - if (sta_id != IWL_INVALID_STATION) { - u8 sta_awake = priv->stations[sta_id]. - ps_status == STA_PS_STATUS_WAKE; + 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; + spin_unlock_irqrestore(&priv->sta_lock, flags); - if (sta_awake && ps_bit) - priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP; - else if (!sta_awake && !ps_bit) { - iwl_sta_modify_ps_wake(priv, sta_id); - priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE; - } - } + iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); } - diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.h b/drivers/net/wireless/iwlwifi/iwl-sta.h index 1c382de80d4..8d052de2d40 100644 --- a/drivers/net/wireless/iwlwifi/iwl-sta.h +++ b/drivers/net/wireless/iwlwifi/iwl-sta.h @@ -66,5 +66,6 @@ void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid); int iwl_sta_rx_agg_start(struct iwl_priv *priv, const u8 *addr, int tid, u16 ssn); int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid); -void iwl_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr); +void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id); +void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt); #endif /* __iwl_sta_h__ */ diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c index 9370e062000..ebfc460115d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-tx.c @@ -709,6 +709,8 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_sta *sta = info->control.sta; + struct iwl_station_priv *sta_priv = NULL; struct iwl_tx_queue *txq; struct iwl_queue *q; struct iwl_device_cmd *out_cmd; @@ -771,6 +773,24 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) IWL_DEBUG_TX(priv, "station Id %d\n", sta_id); + if (sta) + sta_priv = (void *)sta->drv_priv; + + if (sta_priv && sta_id != priv->hw_params.bcast_sta_id && + sta_priv->asleep) { + WARN_ON(!(info->flags & IEEE80211_TX_CTL_PSPOLL_RESPONSE)); + /* + * This sends an asynchronous command to the device, + * but we can rely on it being processed before the + * next frame is processed -- and the next frame to + * this station is the one that will consume this + * counter. + * For now set the counter to just 1 since we do not + * support uAPSD yet. + */ + iwl_sta_modify_sleep_tx_count(priv, sta_id, 1); + } + txq_id = skb_get_queue_mapping(skb); if (ieee80211_is_data_qos(fc)) { qc = ieee80211_get_qos_ctl(hdr); @@ -930,6 +950,17 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) ret = iwl_txq_update_write_ptr(priv, txq); spin_unlock_irqrestore(&priv->lock, flags); + /* + * At this point the frame is "transmitted" successfully + * and we will get a TX status notification eventually, + * regardless of the value of ret. "ret" only indicates + * whether or not we should update the write pointer. + */ + + /* avoid atomic ops if it isn't an associated client */ + if (sta_priv && sta_priv->client) + atomic_inc(&sta_priv->pending_frames); + if (ret) return ret; @@ -1074,6 +1105,24 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) return ret ? ret : idx; } +static void iwl_tx_status(struct iwl_priv *priv, struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + struct ieee80211_sta *sta; + struct iwl_station_priv *sta_priv; + + sta = ieee80211_find_sta(priv->vif, hdr->addr1); + if (sta) { + sta_priv = (void *)sta->drv_priv; + /* avoid atomic ops if this isn't a client */ + if (sta_priv->client && + atomic_dec_return(&sta_priv->pending_frames) == 0) + ieee80211_sta_block_awake(priv->hw, sta, false); + } + + ieee80211_tx_status_irqsafe(priv->hw, skb); +} + int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index) { struct iwl_tx_queue *txq = &priv->txq[txq_id]; @@ -1093,7 +1142,7 @@ int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index) q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) { tx_info = &txq->txb[txq->q.read_ptr]; - ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]); + iwl_tx_status(priv, tx_info->skb[0]); tx_info->skb[0] = NULL; if (priv->cfg->ops->lib->txq_inval_byte_cnt_tbl) |