1 files changed, 106 insertions, 54 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index c6633fec8216..cd6a6901216e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -99,32 +99,25 @@ static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
 
 static void iwl_add_sta_callback(struct iwl_priv *priv,
 				 struct iwl_device_cmd *cmd,
-				 struct sk_buff *skb)
+				 struct iwl_rx_packet *pkt)
 {
-	struct iwl_rx_packet *res = NULL;
 	struct iwl_addsta_cmd *addsta =
 		(struct iwl_addsta_cmd *)cmd->cmd.payload;
 	u8 sta_id = addsta->sta.sta_id;
 
-	if (!skb) {
-		IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
-		return;
-	}
-
-	res = (struct iwl_rx_packet *)skb->data;
-	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
 		IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
-			  res->hdr.flags);
+			  pkt->hdr.flags);
 		return;
 	}
 
-	switch (res->u.add_sta.status) {
+	switch (pkt->u.add_sta.status) {
 	case ADD_STA_SUCCESS_MSK:
 		iwl_sta_ucode_activate(priv, sta_id);
 		 /* fall through */
 	default:
 		IWL_DEBUG_HC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
-			     res->u.add_sta.status);
+			     pkt->u.add_sta.status);
 		break;
 	}
 }
@@ -132,7 +125,7 @@ static void iwl_add_sta_callback(struct iwl_priv *priv,
 int iwl_send_add_sta(struct iwl_priv *priv,
 		     struct iwl_addsta_cmd *sta, u8 flags)
 {
-	struct iwl_rx_packet *res = NULL;
+	struct iwl_rx_packet *pkt = NULL;
 	int ret = 0;
 	u8 data[sizeof(*sta)];
 	struct iwl_host_cmd cmd = {
@@ -152,15 +145,15 @@ int iwl_send_add_sta(struct iwl_priv *priv,
 	if (ret || (flags & CMD_ASYNC))
 		return ret;
 
-	res = (struct iwl_rx_packet *)cmd.reply_skb->data;
-	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+	pkt = (struct iwl_rx_packet *)cmd.reply_page;
+	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
 		IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
-			  res->hdr.flags);
+			  pkt->hdr.flags);
 		ret = -EIO;
 	}
 
 	if (ret == 0) {
-		switch (res->u.add_sta.status) {
+		switch (pkt->u.add_sta.status) {
 		case ADD_STA_SUCCESS_MSK:
 			iwl_sta_ucode_activate(priv, sta->sta.sta_id);
 			IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
@@ -172,8 +165,8 @@ int iwl_send_add_sta(struct iwl_priv *priv,
 		}
 	}
 
-	priv->alloc_rxb_skb--;
-	dev_kfree_skb_any(cmd.reply_skb);
+	priv->alloc_rxb_page--;
+	free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
 
 	return ret;
 }
@@ -189,6 +182,11 @@ static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
 		goto done;
 
 	mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
+	IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
+			(mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
+			"static" :
+			(mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
+			"dynamic" : "disabled");
 
 	sta_flags = priv->stations[index].sta.station_flags;
 
@@ -324,26 +322,19 @@ static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
 
 static void iwl_remove_sta_callback(struct iwl_priv *priv,
 				    struct iwl_device_cmd *cmd,
-				    struct sk_buff *skb)
+				    struct iwl_rx_packet *pkt)
 {
-	struct iwl_rx_packet *res = NULL;
 	struct iwl_rem_sta_cmd *rm_sta =
-		 (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
+			(struct iwl_rem_sta_cmd *)cmd->cmd.payload;
 	const char *addr = rm_sta->addr;
 
-	if (!skb) {
-		IWL_ERR(priv, "Error: Response NULL in REPLY_REMOVE_STA.\n");
-		return;
-	}
-
-	res = (struct iwl_rx_packet *)skb->data;
-	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
 		IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
-		res->hdr.flags);
+		pkt->hdr.flags);
 		return;
 	}
 
-	switch (res->u.rem_sta.status) {
+	switch (pkt->u.rem_sta.status) {
 	case REM_STA_SUCCESS_MSK:
 		iwl_sta_ucode_deactivate(priv, addr);
 		break;
@@ -356,7 +347,7 @@ static void iwl_remove_sta_callback(struct iwl_priv *priv,
 static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
 				   u8 flags)
 {
-	struct iwl_rx_packet *res = NULL;
+	struct iwl_rx_packet *pkt;
 	int ret;
 
 	struct iwl_rem_sta_cmd rm_sta_cmd;
@@ -381,15 +372,15 @@ static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
 	if (ret || (flags & CMD_ASYNC))
 		return ret;
 
-	res = (struct iwl_rx_packet *)cmd.reply_skb->data;
-	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+	pkt = (struct iwl_rx_packet *)cmd.reply_page;
+	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
 		IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
-			  res->hdr.flags);
+			  pkt->hdr.flags);
 		ret = -EIO;
 	}
 
 	if (!ret) {
-		switch (res->u.rem_sta.status) {
+		switch (pkt->u.rem_sta.status) {
 		case REM_STA_SUCCESS_MSK:
 			iwl_sta_ucode_deactivate(priv, addr);
 			IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
@@ -401,8 +392,8 @@ static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
 		}
 	}
 
-	priv->alloc_rxb_skb--;
-	dev_kfree_skb_any(cmd.reply_skb);
+	priv->alloc_rxb_page--;
+	free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
 
 	return ret;
 }
@@ -1026,7 +1017,7 @@ int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
 	 */
 	if (priv->current_ht_config.is_ht) {
 		rcu_read_lock();
-		sta = ieee80211_find_sta(priv->hw, addr);
+		sta = ieee80211_find_sta(priv->vif, addr);
 		if (sta) {
 			memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
 			cur_ht_config = &ht_config;
@@ -1044,6 +1035,68 @@ int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
 EXPORT_SYMBOL(iwl_rxon_add_station);
 
 /**
+ * iwl_sta_init_bcast_lq - Initialize a bcast station's hardware rate table
+ *
+ * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
+ *       calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
+ *       which requires station table entry to exist).
+ */
+static void iwl_sta_init_bcast_lq(struct iwl_priv *priv)
+{
+	int i, r;
+	struct iwl_link_quality_cmd link_cmd = {
+		.reserved1 = 0,
+	};
+	u32 rate_flags;
+
+	/* 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;
+
+	for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
+		rate_flags = 0;
+		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;
+
+		link_cmd.rs_table[i].rate_n_flags =
+			iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
+		r = iwl_get_prev_ieee_rate(r);
+	}
+
+	link_cmd.general_params.single_stream_ant_msk =
+				first_antenna(priv->hw_params.valid_tx_ant);
+	link_cmd.general_params.dual_stream_ant_msk = 3;
+	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);
+
+	/* Update the rate scaling for control frame Tx to AP */
+	link_cmd.sta_id = priv->hw_params.bcast_sta_id;
+
+	iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
+			       sizeof(link_cmd), &link_cmd, NULL);
+}
+
+
+/**
+ * iwl_add_bcast_station - add broadcast station into station table.
+ */
+void iwl_add_bcast_station(struct iwl_priv *priv)
+{
+	iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);
+
+	/* Set up default rate scaling table in device's station table */
+	iwl_sta_init_bcast_lq(priv);
+}
+EXPORT_SYMBOL(iwl_add_bcast_station);
+
+/**
  * iwl_get_sta_id - Find station's index within station table
  *
  * If new IBSS station, create new entry in station table
@@ -1163,7 +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;
 
@@ -1171,27 +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);
 }
-