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
.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)
#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 */
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");
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;
};
struct iwl_addsta_cmd sta;
struct iwl_tid_data tid[MAX_TID_COUNT];
u8 used;
- u8 ps_status;
struct iwl_hw_key keyinfo;
};
* 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) */
struct iwl4965_rx_mpdu_res_start *amsdu;
u32 len;
u32 ampdu_status;
- u16 fc;
u32 rate_n_flags;
/**
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);
}
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;
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);
}
-
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__ */
{
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;
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);
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;
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];
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)
projects / linux-2.6-microblaze.git / commitdiff