Merge branch 'wl12xx-next'wl12xx-2011-07-05

16 files changed, 366 insertions, 123 deletions

diff --git a/drivers/net/wireless/wl12xx/acx.c b/drivers/net/wireless/wl12xx/acx.c
index 87caa94fd81..7e33f1f4f3d 100644
--- a/drivers/net/wireless/wl12xx/acx.c
+++ b/drivers/net/wireless/wl12xx/acx.c
@@ -90,7 +90,7 @@ int wl1271_acx_tx_power(struct wl1271 *wl, int power)
 	struct acx_current_tx_power *acx;
 	int ret;
 
-	wl1271_debug(DEBUG_ACX, "acx dot11_cur_tx_pwr");
+	wl1271_debug(DEBUG_ACX, "acx dot11_cur_tx_pwr %d", power);
 
 	if (power < 0 || power > 25)
 		return -EINVAL;
@@ -1624,22 +1624,22 @@ out:
 	return ret;
 }
 
-int wl1271_acx_max_tx_retry(struct wl1271 *wl)
+int wl1271_acx_ap_max_tx_retry(struct wl1271 *wl)
 {
-	struct wl1271_acx_max_tx_retry *acx = NULL;
+	struct wl1271_acx_ap_max_tx_retry *acx = NULL;
 	int ret;
 
-	wl1271_debug(DEBUG_ACX, "acx max tx retry");
+	wl1271_debug(DEBUG_ACX, "acx ap max tx retry");
 
 	acx = kzalloc(sizeof(*acx), GFP_KERNEL);
 	if (!acx)
 		return -ENOMEM;
 
-	acx->max_tx_retry = cpu_to_le16(wl->conf.tx.ap_max_tx_retries);
+	acx->max_tx_retry = cpu_to_le16(wl->conf.tx.max_tx_retries);
 
 	ret = wl1271_cmd_configure(wl, ACX_MAX_TX_FAILURE, acx, sizeof(*acx));
 	if (ret < 0) {
-		wl1271_warning("acx max tx retry failed: %d", ret);
+		wl1271_warning("acx ap max tx retry failed: %d", ret);
 		goto out;
 	}
 
diff --git a/drivers/net/wireless/wl12xx/acx.h b/drivers/net/wireless/wl12xx/acx.h
index d303265f163..d2eb86eccc0 100644
--- a/drivers/net/wireless/wl12xx/acx.h
+++ b/drivers/net/wireless/wl12xx/acx.h
@@ -1168,7 +1168,7 @@ struct wl1271_acx_ps_rx_streaming {
 	u8 timeout;
 } __packed;
 
-struct wl1271_acx_max_tx_retry {
+struct wl1271_acx_ap_max_tx_retry {
 	struct acx_header header;
 
 	/*
@@ -1400,7 +1400,7 @@ int wl1271_acx_set_ba_receiver_session(struct wl1271 *wl, u8 tid_index, u16 ssn,
 				       bool enable);
 int wl1271_acx_tsf_info(struct wl1271 *wl, u64 *mactime);
 int wl1271_acx_ps_rx_streaming(struct wl1271 *wl, bool enable);
-int wl1271_acx_max_tx_retry(struct wl1271 *wl);
+int wl1271_acx_ap_max_tx_retry(struct wl1271 *wl);
 int wl1271_acx_config_ps(struct wl1271 *wl);
 int wl1271_acx_set_inconnection_sta(struct wl1271 *wl, u8 *addr);
 int wl1271_acx_set_ap_beacon_filter(struct wl1271 *wl, bool enable);
diff --git a/drivers/net/wireless/wl12xx/boot.c b/drivers/net/wireless/wl12xx/boot.c
index 101f7e0f632..5ebc64d8940 100644
--- a/drivers/net/wireless/wl12xx/boot.c
+++ b/drivers/net/wireless/wl12xx/boot.c
@@ -513,7 +513,9 @@ static int wl1271_boot_run_firmware(struct wl1271 *wl)
 		PERIODIC_SCAN_COMPLETE_EVENT_ID;
 
 	if (wl->bss_type == BSS_TYPE_AP_BSS)
-		wl->event_mask |= STA_REMOVE_COMPLETE_EVENT_ID;
+		wl->event_mask |= STA_REMOVE_COMPLETE_EVENT_ID |
+				  INACTIVE_STA_EVENT_ID |
+				  MAX_TX_RETRY_EVENT_ID;
 	else
 		wl->event_mask |= DUMMY_PACKET_EVENT_ID |
 			BA_SESSION_RX_CONSTRAINT_EVENT_ID;
diff --git a/drivers/net/wireless/wl12xx/cmd.c b/drivers/net/wireless/wl12xx/cmd.c
index 68972cbc68b..97dd237a958 100644
--- a/drivers/net/wireless/wl12xx/cmd.c
+++ b/drivers/net/wireless/wl12xx/cmd.c
@@ -400,10 +400,6 @@ int wl1271_cmd_join(struct wl1271 *wl, u8 bss_type)
 
 	join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;
 
-	/* reset TX security counters */
-	wl->tx_security_last_seq = 0;
-	wl->tx_security_seq = 0;
-
 	wl1271_debug(DEBUG_CMD, "cmd join: basic_rate_set=0x%x, rate_set=0x%x",
 		join->basic_rate_set, join->supported_rate_set);
 
@@ -1084,7 +1080,7 @@ int wl1271_cmd_start_bss(struct wl1271 *wl)
 
 	memcpy(cmd->bssid, bss_conf->bssid, ETH_ALEN);
 
-	cmd->aging_period = cpu_to_le16(WL1271_AP_DEF_INACTIV_SEC);
+	cmd->aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
 	cmd->bss_index = WL1271_AP_BSS_INDEX;
 	cmd->global_hlid = WL1271_AP_GLOBAL_HLID;
 	cmd->broadcast_hlid = WL1271_AP_BROADCAST_HLID;
diff --git a/drivers/net/wireless/wl12xx/conf.h b/drivers/net/wireless/wl12xx/conf.h
index b5a7b30afda..6080e01d92c 100644
--- a/drivers/net/wireless/wl12xx/conf.h
+++ b/drivers/net/wireless/wl12xx/conf.h
@@ -713,8 +713,16 @@ struct conf_tx_settings {
 	/*
 	 * AP-mode - allow this number of TX retries to a station before an
 	 * event is triggered from FW.
+	 * In AP-mode the hlids of unreachable stations are given in the
+	 * "sta_tx_retry_exceeded" member in the event mailbox.
 	 */
-	u16 ap_max_tx_retries;
+	u8 max_tx_retries;
+
+	/*
+	 * AP-mode - after this number of seconds a connected station is
+	 * considered inactive.
+	 */
+	u16 ap_aging_period;
 
 	/*
 	 * Configuration for TID parameters.
diff --git a/drivers/net/wireless/wl12xx/debugfs.c b/drivers/net/wireless/wl12xx/debugfs.c
index da212701830..4d9c8cc076e 100644
--- a/drivers/net/wireless/wl12xx/debugfs.c
+++ b/drivers/net/wireless/wl12xx/debugfs.c
@@ -338,7 +338,10 @@ static ssize_t driver_state_read(struct file *file, char __user *user_buf,
 #define DRIVER_STATE_PRINT_HEX(x)  DRIVER_STATE_PRINT(x, "0x%x")
 
 	DRIVER_STATE_PRINT_INT(tx_blocks_available);
-	DRIVER_STATE_PRINT_INT(tx_allocated_blocks);
+	DRIVER_STATE_PRINT_INT(tx_allocated_blocks[0]);
+	DRIVER_STATE_PRINT_INT(tx_allocated_blocks[1]);
+	DRIVER_STATE_PRINT_INT(tx_allocated_blocks[2]);
+	DRIVER_STATE_PRINT_INT(tx_allocated_blocks[3]);
 	DRIVER_STATE_PRINT_INT(tx_frames_cnt);
 	DRIVER_STATE_PRINT_LHEX(tx_frames_map[0]);
 	DRIVER_STATE_PRINT_INT(tx_queue_count);
@@ -349,7 +352,7 @@ static ssize_t driver_state_read(struct file *file, char __user *user_buf,
 	DRIVER_STATE_PRINT_INT(tx_blocks_freed[1]);
 	DRIVER_STATE_PRINT_INT(tx_blocks_freed[2]);
 	DRIVER_STATE_PRINT_INT(tx_blocks_freed[3]);
-	DRIVER_STATE_PRINT_INT(tx_security_last_seq);
+	DRIVER_STATE_PRINT_INT(tx_security_last_seq_lsb);
 	DRIVER_STATE_PRINT_INT(rx_counter);
 	DRIVER_STATE_PRINT_INT(session_counter);
 	DRIVER_STATE_PRINT_INT(state);
diff --git a/drivers/net/wireless/wl12xx/event.c b/drivers/net/wireless/wl12xx/event.c
index a16dee58a66..304aaa2ee01 100644
--- a/drivers/net/wireless/wl12xx/event.c
+++ b/drivers/net/wireless/wl12xx/event.c
@@ -214,6 +214,8 @@ static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
 	u32 vector;
 	bool beacon_loss = false;
 	bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
+	bool disconnect_sta = false;
+	unsigned long sta_bitmap = 0;
 
 	wl1271_event_mbox_dump(mbox);
 
@@ -295,6 +297,46 @@ static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
 			wl1271_tx_dummy_packet(wl);
 	}
 
+	/*
+	 * "TX retries exceeded" has a different meaning according to mode.
+	 * In AP mode the offending station is disconnected.
+	 */
+	if ((vector & MAX_TX_RETRY_EVENT_ID) && is_ap) {
+		wl1271_debug(DEBUG_EVENT, "MAX_TX_RETRY_EVENT_ID");
+		sta_bitmap |= le16_to_cpu(mbox->sta_tx_retry_exceeded);
+		disconnect_sta = true;
+	}
+
+	if ((vector & INACTIVE_STA_EVENT_ID) && is_ap) {
+		wl1271_debug(DEBUG_EVENT, "INACTIVE_STA_EVENT_ID");
+		sta_bitmap |= le16_to_cpu(mbox->sta_aging_status);
+		disconnect_sta = true;
+	}
+
+	if (is_ap && disconnect_sta) {
+		u32 num_packets = wl->conf.tx.max_tx_retries;
+		struct ieee80211_sta *sta;
+		const u8 *addr;
+		int h;
+
+		for (h = find_first_bit(&sta_bitmap, AP_MAX_LINKS);
+		     h < AP_MAX_LINKS;
+		     h = find_next_bit(&sta_bitmap, AP_MAX_LINKS, h+1)) {
+			if (!wl1271_is_active_sta(wl, h))
+				continue;
+
+			addr = wl->links[h].addr;
+
+			rcu_read_lock();
+			sta = ieee80211_find_sta(wl->vif, addr);
+			if (sta) {
+				wl1271_debug(DEBUG_EVENT, "remove sta %d", h);
+				ieee80211_report_low_ack(sta, num_packets);
+			}
+			rcu_read_unlock();
+		}
+	}
+
 	if (wl->vif && beacon_loss)
 		ieee80211_connection_loss(wl->vif);
 
diff --git a/drivers/net/wireless/wl12xx/event.h b/drivers/net/wireless/wl12xx/event.h
index ce99adf4256..e524ad6fe4e 100644
--- a/drivers/net/wireless/wl12xx/event.h
+++ b/drivers/net/wireless/wl12xx/event.h
@@ -58,13 +58,16 @@ enum {
 	CHANNEL_SWITCH_COMPLETE_EVENT_ID	 = BIT(17),
 	BSS_LOSE_EVENT_ID			 = BIT(18),
 	REGAINED_BSS_EVENT_ID			 = BIT(19),
-	ROAMING_TRIGGER_MAX_TX_RETRY_EVENT_ID	 = BIT(20),
+	MAX_TX_RETRY_EVENT_ID			 = BIT(20),
 	/* STA: dummy paket for dynamic mem blocks */
 	DUMMY_PACKET_EVENT_ID                    = BIT(21),
 	/* AP: STA remove complete */
 	STA_REMOVE_COMPLETE_EVENT_ID             = BIT(21),
 	SOFT_GEMINI_SENSE_EVENT_ID		 = BIT(22),
+	/* STA: SG prediction */
 	SOFT_GEMINI_PREDICTION_EVENT_ID		 = BIT(23),
+	/* AP: Inactive STA */
+	INACTIVE_STA_EVENT_ID			 = BIT(23),
 	SOFT_GEMINI_AVALANCHE_EVENT_ID		 = BIT(24),
 	PLT_RX_CALIBRATION_COMPLETE_EVENT_ID	 = BIT(25),
 	DBG_EVENT_ID				 = BIT(26),
@@ -119,7 +122,11 @@ struct event_mailbox {
 
 	/* AP FW only */
 	u8 hlid_removed;
+
+	/* a bitmap of hlids for stations that have been inactive too long */
 	__le16 sta_aging_status;
+
+	/* a bitmap of hlids for stations which didn't respond to TX */
 	__le16 sta_tx_retry_exceeded;
 
 	/*
@@ -143,4 +150,7 @@ void wl1271_event_mbox_config(struct wl1271 *wl);
 int wl1271_event_handle(struct wl1271 *wl, u8 mbox);
 void wl1271_pspoll_work(struct work_struct *work);
 
+/* Functions from main.c */
+bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid);
+
 #endif
diff --git a/drivers/net/wireless/wl12xx/init.c b/drivers/net/wireless/wl12xx/init.c
index cf40ac93cea..c3e9a2e4410 100644
--- a/drivers/net/wireless/wl12xx/init.c
+++ b/drivers/net/wireless/wl12xx/init.c
@@ -447,7 +447,7 @@ static int wl1271_ap_hw_init(struct wl1271 *wl)
 	if (ret < 0)
 		return ret;
 
-	ret = wl1271_acx_max_tx_retry(wl);
+	ret = wl1271_acx_ap_max_tx_retry(wl);
 	if (ret < 0)
 		return ret;
 
@@ -455,6 +455,11 @@ static int wl1271_ap_hw_init(struct wl1271 *wl)
 	if (ret < 0)
 		return ret;
 
+	/* initialize Tx power */
+	ret = wl1271_acx_tx_power(wl, wl->power_level);
+	if (ret < 0)
+		return ret;
+
 	return 0;
 }
 
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index a3734bdf511..526b1ac2dd8 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -210,7 +210,8 @@ static struct conf_drv_settings default_conf = {
 				.tx_op_limit = 1504,
 			},
 		},
-		.ap_max_tx_retries = 100,
+		.max_tx_retries = 100,
+		.ap_aging_period = 300,
 		.tid_conf_count = 4,
 		.tid_conf = {
 			[CONF_TX_AC_BE] = {
@@ -823,13 +824,24 @@ static void wl1271_irq_update_links_status(struct wl1271 *wl,
 	}
 }
 
+static u32 wl1271_tx_allocated_blocks(struct wl1271 *wl)
+{
+	int i;
+	u32 total_alloc_blocks = 0;
+
+	for (i = 0; i < NUM_TX_QUEUES; i++)
+		total_alloc_blocks += wl->tx_allocated_blocks[i];
+
+	return total_alloc_blocks;
+}
+
 static void wl1271_fw_status(struct wl1271 *wl,
 			     struct wl1271_fw_full_status *full_status)
 {
 	struct wl1271_fw_common_status *status = &full_status->common;
 	struct timespec ts;
 	u32 old_tx_blk_count = wl->tx_blocks_available;
-	u32 freed_blocks = 0;
+	u32 freed_blocks = 0, ac_freed_blocks;
 	int i;
 
 	if (wl->bss_type == BSS_TYPE_AP_BSS) {
@@ -849,21 +861,23 @@ static void wl1271_fw_status(struct wl1271 *wl,
 
 	/* update number of available TX blocks */
 	for (i = 0; i < NUM_TX_QUEUES; i++) {
-		freed_blocks += le32_to_cpu(status->tx_released_blks[i]) -
-				wl->tx_blocks_freed[i];
+		ac_freed_blocks = le32_to_cpu(status->tx_released_blks[i]) -
+				  wl->tx_blocks_freed[i];
+		freed_blocks += ac_freed_blocks;
+
+		wl->tx_allocated_blocks[i] -= ac_freed_blocks;
 
 		wl->tx_blocks_freed[i] =
 			le32_to_cpu(status->tx_released_blks[i]);
 	}
 
-	wl->tx_allocated_blocks -= freed_blocks;
-
 	if (wl->bss_type == BSS_TYPE_AP_BSS) {
 		/* Update num of allocated TX blocks per link and ps status */
 		wl1271_irq_update_links_status(wl, &full_status->ap);
 		wl->tx_blocks_available += freed_blocks;
 	} else {
-		int avail = full_status->sta.tx_total - wl->tx_allocated_blocks;
+		int avail = full_status->sta.tx_total -
+			    wl1271_tx_allocated_blocks(wl);
 
 		/*
 		 * The FW might change the total number of TX memblocks before
@@ -1227,6 +1241,15 @@ static void wl1271_recovery_work(struct work_struct *work)
 	wl1271_info("Hardware recovery in progress. FW ver: %s pc: 0x%x",
 		    wl->chip.fw_ver_str, wl1271_read32(wl, SCR_PAD4));
 
+	/*
+	 * Advance security sequence number to overcome potential progress
+	 * in the firmware during recovery. This doens't hurt if the network is
+	 * not encrypted.
+	 */
+	if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags) ||
+	    test_bit(WL1271_FLAG_AP_STARTED, &wl->flags))
+		wl->tx_security_seq += WL1271_TX_SQN_POST_RECOVERY_PADDING;
+
 	if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
 		ieee80211_connection_loss(wl->vif);
 
@@ -1474,10 +1497,11 @@ static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 {
 	struct wl1271 *wl = hw->priv;
 	unsigned long flags;
-	int q;
+	int q, mapping;
 	u8 hlid = 0;
 
-	q = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
+	mapping = skb_get_queue_mapping(skb);
+	q = wl1271_tx_get_queue(mapping);
 
 	if (wl->bss_type == BSS_TYPE_AP_BSS)
 		hlid = wl1271_tx_get_hlid(skb);
@@ -1490,10 +1514,10 @@ static void wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	 * The workqueue is slow to process the tx_queue and we need stop
 	 * the queue here, otherwise the queue will get too long.
 	 */
-	if (wl->tx_queue_count >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
-		wl1271_debug(DEBUG_TX, "op_tx: stopping queues");
-		ieee80211_stop_queues(wl->hw);
-		set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
+	if (skb_queue_len(&wl->tx_queue[q]) >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
+		wl1271_debug(DEBUG_TX, "op_tx: stopping queues for q %d", q);
+		ieee80211_stop_queue(wl->hw, mapping);
+		set_bit(q, &wl->stopped_queues_map);
 	}
 
 	/* queue the packet */
@@ -1586,10 +1610,13 @@ static struct notifier_block wl1271_dev_notifier = {
 #ifdef CONFIG_PM
 static int wl1271_configure_suspend_sta(struct wl1271 *wl)
 {
-	int ret;
+	int ret = 0;
 
 	mutex_lock(&wl->mutex);
 
+	if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
+		goto out_unlock;
+
 	ret = wl1271_ps_elp_wakeup(wl);
 	if (ret < 0)
 		goto out_unlock;
@@ -1634,10 +1661,13 @@ out:
 
 static int wl1271_configure_suspend_ap(struct wl1271 *wl)
 {
-	int ret;
+	int ret = 0;
 
 	mutex_lock(&wl->mutex);
 
+	if (!test_bit(WL1271_FLAG_AP_STARTED, &wl->flags))
+		goto out_unlock;
+
 	ret = wl1271_ps_elp_wakeup(wl);
 	if (ret < 0)
 		goto out_unlock;
@@ -1705,7 +1735,6 @@ static int wl1271_op_suspend(struct ieee80211_hw *hw,
 	}
 	/* flush any remaining work */
 	wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
-	flush_delayed_work(&wl->scan_complete_work);
 
 	/*
 	 * disable and re-enable interrupts in order to flush
@@ -1977,11 +2006,8 @@ static void __wl1271_op_remove_interface(struct wl1271 *wl,
 	wl->psm_entry_retry = 0;
 	wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
 	wl->tx_blocks_available = 0;
-	wl->tx_allocated_blocks = 0;
 	wl->tx_results_count = 0;
 	wl->tx_packets_count = 0;
-	wl->tx_security_last_seq = 0;
-	wl->tx_security_seq = 0;
 	wl->time_offset = 0;
 	wl->session_counter = 0;
 	wl->rate_set = CONF_TX_RATE_MASK_BASIC;
@@ -2000,8 +2026,10 @@ static void __wl1271_op_remove_interface(struct wl1271 *wl,
 	 */
 	wl->flags = 0;
 
-	for (i = 0; i < NUM_TX_QUEUES; i++)
+	for (i = 0; i < NUM_TX_QUEUES; i++) {
 		wl->tx_blocks_freed[i] = 0;
+		wl->tx_allocated_blocks[i] = 0;
+	}
 
 	wl1271_debugfs_reset(wl);
 
@@ -2154,6 +2182,10 @@ static int wl1271_unjoin(struct wl1271 *wl)
 	clear_bit(WL1271_FLAG_JOINED, &wl->flags);
 	memset(wl->bssid, 0, ETH_ALEN);
 
+	/* reset TX security counters on a clean disconnect */
+	wl->tx_security_last_seq_lsb = 0;
+	wl->tx_security_seq = 0;
+
 	/* stop filtering packets based on bssid */
 	wl1271_configure_filters(wl, FIF_OTHER_BSS);
 
@@ -2246,6 +2278,9 @@ static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
 			wl->channel = channel;
 		}
 
+		if ((changed & IEEE80211_CONF_CHANGE_POWER))
+			wl->power_level = conf->power_level;
+
 		goto out;
 	}
 
@@ -2753,6 +2788,44 @@ out:
 	return ret;
 }
 
+static void wl1271_op_cancel_hw_scan(struct ieee80211_hw *hw,
+				     struct ieee80211_vif *vif)
+{
+	struct wl1271 *wl = hw->priv;
+	int ret;
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 cancel hw scan");
+
+	mutex_lock(&wl->mutex);
+
+	if (wl->state == WL1271_STATE_OFF)
+		goto out;
+
+	if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
+		goto out;
+
+	ret = wl1271_ps_elp_wakeup(wl);
+	if (ret < 0)
+		goto out;
+
+	if (wl->scan.state != WL1271_SCAN_STATE_DONE) {
+		ret = wl1271_scan_stop(wl);
+		if (ret < 0)
+			goto out_sleep;
+	}
+	wl->scan.state = WL1271_SCAN_STATE_IDLE;
+	memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
+	wl->scan.req = NULL;
+	ieee80211_scan_completed(wl->hw, true);
+
+out_sleep:
+	wl1271_ps_elp_sleep(wl);
+out:
+	mutex_unlock(&wl->mutex);
+
+	cancel_delayed_work_sync(&wl->scan_complete_work);
+}
+
 static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
 				      struct ieee80211_vif *vif,
 				      struct cfg80211_sched_scan_request *req,
@@ -3515,6 +3588,12 @@ static void wl1271_free_sta(struct wl1271 *wl, u8 hlid)
 	__clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
 }
 
+bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid)
+{
+	int id = hlid - WL1271_AP_STA_HLID_START;
+	return test_bit(id, wl->ap_hlid_map);
+}
+
 static int wl1271_op_sta_add(struct ieee80211_hw *hw,
 			     struct ieee80211_vif *vif,
 			     struct ieee80211_sta *sta)
@@ -3836,40 +3915,40 @@ static struct ieee80211_rate wl1271_rates_5ghz[] = {
 
 /* 5 GHz band channels for WL1273 */
 static struct ieee80211_channel wl1271_channels_5ghz[] = {
-	{ .hw_value = 7, .center_freq = 5035},
-	{ .hw_value = 8, .center_freq = 5040},
-	{ .hw_value = 9, .center_freq = 5045},
-	{ .hw_value = 11, .center_freq = 5055},
-	{ .hw_value = 12, .center_freq = 5060},
-	{ .hw_value = 16, .center_freq = 5080},
-	{ .hw_value = 34, .center_freq = 5170},
-	{ .hw_value = 36, .center_freq = 5180},
-	{ .hw_value = 38, .center_freq = 5190},
-	{ .hw_value = 40, .center_freq = 5200},
-	{ .hw_value = 42, .center_freq = 5210},
-	{ .hw_value = 44, .center_freq = 5220},
-	{ .hw_value = 46, .center_freq = 5230},
-	{ .hw_value = 48, .center_freq = 5240},
-	{ .hw_value = 52, .center_freq = 5260},
-	{ .hw_value = 56, .center_freq = 5280},
-	{ .hw_value = 60, .center_freq = 5300},
-	{ .hw_value = 64, .center_freq = 5320},
-	{ .hw_value = 100, .center_freq = 5500},
-	{ .hw_value = 104, .center_freq = 5520},
-	{ .hw_value = 108, .center_freq = 5540},
-	{ .hw_value = 112, .center_freq = 5560},
-	{ .hw_value = 116, .center_freq = 5580},
-	{ .hw_value = 120, .center_freq = 5600},
-	{ .hw_value = 124, .center_freq = 5620},
-	{ .hw_value = 128, .center_freq = 5640},
-	{ .hw_value = 132, .center_freq = 5660},
-	{ .hw_value = 136, .center_freq = 5680},
-	{ .hw_value = 140, .center_freq = 5700},
-	{ .hw_value = 149, .center_freq = 5745},
-	{ .hw_value = 153, .center_freq = 5765},
-	{ .hw_value = 157, .center_freq = 5785},
-	{ .hw_value = 161, .center_freq = 5805},
-	{ .hw_value = 165, .center_freq = 5825},
+	{ .hw_value = 7, .center_freq = 5035, .max_power = 25 },
+	{ .hw_value = 8, .center_freq = 5040, .max_power = 25 },
+	{ .hw_value = 9, .center_freq = 5045, .max_power = 25 },
+	{ .hw_value = 11, .center_freq = 5055, .max_power = 25 },
+	{ .hw_value = 12, .center_freq = 5060, .max_power = 25 },
+	{ .hw_value = 16, .center_freq = 5080, .max_power = 25 },
+	{ .hw_value = 34, .center_freq = 5170, .max_power = 25 },
+	{ .hw_value = 36, .center_freq = 5180, .max_power = 25 },
+	{ .hw_value = 38, .center_freq = 5190, .max_power = 25 },
+	{ .hw_value = 40, .center_freq = 5200, .max_power = 25 },
+	{ .hw_value = 42, .center_freq = 5210, .max_power = 25 },
+	{ .hw_value = 44, .center_freq = 5220, .max_power = 25 },
+	{ .hw_value = 46, .center_freq = 5230, .max_power = 25 },
+	{ .hw_value = 48, .center_freq = 5240, .max_power = 25 },
+	{ .hw_value = 52, .center_freq = 5260, .max_power = 25 },
+	{ .hw_value = 56, .center_freq = 5280, .max_power = 25 },
+	{ .hw_value = 60, .center_freq = 5300, .max_power = 25 },
+	{ .hw_value = 64, .center_freq = 5320, .max_power = 25 },
+	{ .hw_value = 100, .center_freq = 5500, .max_power = 25 },
+	{ .hw_value = 104, .center_freq = 5520, .max_power = 25 },
+	{ .hw_value = 108, .center_freq = 5540, .max_power = 25 },
+	{ .hw_value = 112, .center_freq = 5560, .max_power = 25 },
+	{ .hw_value = 116, .center_freq = 5580, .max_power = 25 },
+	{ .hw_value = 120, .center_freq = 5600, .max_power = 25 },
+	{ .hw_value = 124, .center_freq = 5620, .max_power = 25 },
+	{ .hw_value = 128, .center_freq = 5640, .max_power = 25 },
+	{ .hw_value = 132, .center_freq = 5660, .max_power = 25 },
+	{ .hw_value = 136, .center_freq = 5680, .max_power = 25 },
+	{ .hw_value = 140, .center_freq = 5700, .max_power = 25 },
+	{ .hw_value = 149, .center_freq = 5745, .max_power = 25 },
+	{ .hw_value = 153, .center_freq = 5765, .max_power = 25 },
+	{ .hw_value = 157, .center_freq = 5785, .max_power = 25 },
+	{ .hw_value = 161, .center_freq = 5805, .max_power = 25 },
+	{ .hw_value = 165, .center_freq = 5825, .max_power = 25 },
 };
 
 /* mapping to indexes for wl1271_rates_5ghz */
@@ -3930,6 +4009,7 @@ static const struct ieee80211_ops wl1271_ops = {
 	.tx = wl1271_op_tx,
 	.set_key = wl1271_op_set_key,
 	.hw_scan = wl1271_op_hw_scan,
+	.cancel_hw_scan = wl1271_op_cancel_hw_scan,
 	.sched_scan_start = wl1271_op_sched_scan_start,
 	.sched_scan_stop = wl1271_op_sched_scan_stop,
 	.bss_info_changed = wl1271_op_bss_info_changed,
@@ -4327,6 +4407,9 @@ struct ieee80211_hw *wl1271_alloc_hw(void)
 	wl->quirks = 0;
 	wl->platform_quirks = 0;
 	wl->sched_scanning = false;
+	wl->tx_security_seq = 0;
+	wl->tx_security_last_seq_lsb = 0;
+
 	setup_timer(&wl->rx_streaming_timer, wl1271_rx_streaming_timer,
 		    (unsigned long) wl);
 	wl->fwlog_size = 0;
diff --git a/drivers/net/wireless/wl12xx/scan.c b/drivers/net/wireless/wl12xx/scan.c
index 5e5c66dd06d..edfe01c321c 100644
--- a/drivers/net/wireless/wl12xx/scan.c
+++ b/drivers/net/wireless/wl12xx/scan.c
@@ -321,6 +321,33 @@ int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
 	return 0;
 }
 
+int wl1271_scan_stop(struct wl1271 *wl)
+{
+	struct wl1271_cmd_header *cmd = NULL;
+	int ret = 0;
+
+	if (WARN_ON(wl->scan.state == WL1271_SCAN_STATE_IDLE))
+		return -EINVAL;
+
+	wl1271_debug(DEBUG_CMD, "cmd scan stop");
+
+	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+	if (!cmd) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	ret = wl1271_cmd_send(wl, CMD_STOP_SCAN, cmd,
+			      sizeof(*cmd), 0);
+	if (ret < 0) {
+		wl1271_error("cmd stop_scan failed");
+		goto out;
+	}
+out:
+	kfree(cmd);
+	return ret;
+}
+
 static int
 wl1271_scan_get_sched_scan_channels(struct wl1271 *wl,
 				    struct cfg80211_sched_scan_request *req,
diff --git a/drivers/net/wireless/wl12xx/scan.h b/drivers/net/wireless/wl12xx/scan.h
index ca81de20ebe..d882e4da71b 100644
--- a/drivers/net/wireless/wl12xx/scan.h
+++ b/drivers/net/wireless/wl12xx/scan.h
@@ -28,6 +28,7 @@
 
 int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
 		struct cfg80211_scan_request *req);
+int wl1271_scan_stop(struct wl1271 *wl);
 int wl1271_scan_build_probe_req(struct wl1271 *wl,
 				const u8 *ssid, size_t ssid_len,
 				const u8 *ie, size_t ie_len, u8 band);
diff --git a/drivers/net/wireless/wl12xx/sdio.c b/drivers/net/wireless/wl12xx/sdio.c
index 4dc4573b686..5cf18c2c23f 100644
--- a/drivers/net/wireless/wl12xx/sdio.c
+++ b/drivers/net/wireless/wl12xx/sdio.c
@@ -166,13 +166,13 @@ static int wl1271_sdio_power_on(struct wl1271 *wl)
 		ret = pm_runtime_get_sync(&func->dev);
 		if (ret)
 			goto out;
+	} else {
+		/* Runtime PM is disabled: power up the card manually */
+		ret = mmc_power_restore_host(func->card->host);
+		if (ret < 0)
+			goto out;
 	}
 
-	/* Runtime PM might be disabled, so power up the card manually */
-	ret = mmc_power_restore_host(func->card->host);
-	if (ret < 0)
-		goto out;
-
 	sdio_claim_host(func);
 	sdio_enable_func(func);
 
@@ -188,7 +188,7 @@ static int wl1271_sdio_power_off(struct wl1271 *wl)
 	sdio_disable_func(func);
 	sdio_release_host(func);
 
-	/* Runtime PM might be disabled, so power off the card manually */
+	/* Power off the card manually, even if runtime PM is enabled. */
 	ret = mmc_power_save_host(func->card->host);
 	if (ret < 0)
 		return ret;
diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c
index 200590c0d9e..75984dc81a8 100644
--- a/drivers/net/wireless/wl12xx/tx.c
+++ b/drivers/net/wireless/wl12xx/tx.c
@@ -168,7 +168,7 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
 	u32 total_len = skb->len + sizeof(struct wl1271_tx_hw_descr) + extra;
 	u32 len;
 	u32 total_blocks;
-	int id, ret = -EBUSY;
+	int id, ret = -EBUSY, ac;
 	u32 spare_blocks;
 
 	if (unlikely(wl->quirks & WL12XX_QUIRK_USE_2_SPARE_BLOCKS))
@@ -206,7 +206,9 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
 		desc->id = id;
 
 		wl->tx_blocks_available -= total_blocks;
-		wl->tx_allocated_blocks += total_blocks;
+
+		ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
+		wl->tx_allocated_blocks[ac] += total_blocks;
 
 		if (wl->bss_type == BSS_TYPE_AP_BSS)
 			wl->links[hlid].allocated_blks += total_blocks;
@@ -383,6 +385,8 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct sk_buff *skb,
 	if (ret < 0)
 		return ret;
 
+	wl1271_tx_fill_hdr(wl, skb, extra, info, hlid);
+
 	if (wl->bss_type == BSS_TYPE_AP_BSS) {
 		wl1271_tx_ap_update_inconnection_sta(wl, skb);
 		wl1271_tx_regulate_link(wl, hlid);
@@ -390,8 +394,6 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct sk_buff *skb,
 		wl1271_tx_update_filters(wl, skb);
 	}
 
-	wl1271_tx_fill_hdr(wl, skb, extra, info, hlid);
-
 	/*
 	 * The length of each packet is stored in terms of
 	 * words. Thus, we must pad the skb data to make sure its
@@ -442,32 +444,57 @@ u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set)
 void wl1271_handle_tx_low_watermark(struct wl1271 *wl)
 {
 	unsigned long flags;
+	int i;
 
-	if (test_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags) &&
-	    wl->tx_queue_count <= WL1271_TX_QUEUE_LOW_WATERMARK) {
-		/* firmware buffer has space, restart queues */
-		spin_lock_irqsave(&wl->wl_lock, flags);
-		ieee80211_wake_queues(wl->hw);
-		clear_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
-		spin_unlock_irqrestore(&wl->wl_lock, flags);
+	for (i = 0; i < NUM_TX_QUEUES; i++) {
+		if (test_bit(i, &wl->stopped_queues_map) &&
+		    skb_queue_len(&wl->tx_queue[i]) <=
+						WL1271_TX_QUEUE_LOW_WATERMARK) {
+			/* firmware buffer has space, restart queues */
+			spin_lock_irqsave(&wl->wl_lock, flags);
+			ieee80211_wake_queue(wl->hw,
+					     wl1271_tx_get_mac80211_queue(i));
+			clear_bit(i, &wl->stopped_queues_map);
+			spin_unlock_irqrestore(&wl->wl_lock, flags);
+		}
 	}
 }
 
+static struct sk_buff_head *wl1271_select_queue(struct wl1271 *wl,
+						struct sk_buff_head *queues)
+{
+	int i, q = -1;
+	u32 min_blks = 0xffffffff;
+
+	/*
+	 * Find a non-empty ac where:
+	 * 1. There are packets to transmit
+	 * 2. The FW has the least allocated blocks
+	 */
+	for (i = 0; i < NUM_TX_QUEUES; i++)
+		if (!skb_queue_empty(&queues[i]) &&
+		    (wl->tx_allocated_blocks[i] < min_blks)) {
+			q = i;
+			min_blks = wl->tx_allocated_blocks[q];
+		}
+
+	if (q == -1)
+		return NULL;
+
+	return &queues[q];
+}
+
 static struct sk_buff *wl1271_sta_skb_dequeue(struct wl1271 *wl)
 {
 	struct sk_buff *skb = NULL;
 	unsigned long flags;
+	struct sk_buff_head *queue;
 
-	skb = skb_dequeue(&wl->tx_queue[CONF_TX_AC_VO]);
-	if (skb)
+	queue = wl1271_select_queue(wl, wl->tx_queue);
+	if (!queue)
 		goto out;
-	skb = skb_dequeue(&wl->tx_queue[CONF_TX_AC_VI]);
-	if (skb)
-		goto out;
-	skb = skb_dequeue(&wl->tx_queue[CONF_TX_AC_BE]);
-	if (skb)
-		goto out;
-	skb = skb_dequeue(&wl->tx_queue[CONF_TX_AC_BK]);
+
+	skb = skb_dequeue(queue);
 
 out:
 	if (skb) {
@@ -484,6 +511,7 @@ static struct sk_buff *wl1271_ap_skb_dequeue(struct wl1271 *wl)
 	struct sk_buff *skb = NULL;
 	unsigned long flags;
 	int i, h, start_hlid;
+	struct sk_buff_head *queue;
 
 	/* start from the link after the last one */
 	start_hlid = (wl->last_tx_hlid + 1) % AP_MAX_LINKS;
@@ -492,21 +520,20 @@ static struct sk_buff *wl1271_ap_skb_dequeue(struct wl1271 *wl)
 	for (i = 0; i < AP_MAX_LINKS; i++) {
 		h = (start_hlid + i) % AP_MAX_LINKS;
 
-		skb = skb_dequeue(&wl->links[h].tx_queue[CONF_TX_AC_VO]);
-		if (skb)
-			goto out;
-		skb = skb_dequeue(&wl->links[h].tx_queue[CONF_TX_AC_VI]);
-		if (skb)
-			goto out;
-		skb = skb_dequeue(&wl->links[h].tx_queue[CONF_TX_AC_BE]);
-		if (skb)
-			goto out;
-		skb = skb_dequeue(&wl->links[h].tx_queue[CONF_TX_AC_BK]);
+		/* only consider connected stations */
+		if (h >= WL1271_AP_STA_HLID_START &&
+		    !test_bit(h - WL1271_AP_STA_HLID_START, wl->ap_hlid_map))
+			continue;
+
+		queue = wl1271_select_queue(wl, wl->links[h].tx_queue);
+		if (!queue)
+			continue;
+
+		skb = skb_dequeue(queue);
 		if (skb)
-			goto out;
+			break;
 	}
 
-out:
 	if (skb) {
 		wl->last_tx_hlid = h;
 		spin_lock_irqsave(&wl->wl_lock, flags);
@@ -704,10 +731,24 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl,
 
 	wl->stats.retry_count += result->ack_failures;
 
-	/* update security sequence number */
-	wl->tx_security_seq += (result->lsb_security_sequence_number -
-				wl->tx_security_last_seq);
-	wl->tx_security_last_seq = result->lsb_security_sequence_number;
+	/*
+	 * update sequence number only when relevant, i.e. only in
+	 * sessions of TKIP, AES and GEM (not in open or WEP sessions)
+	 */
+	if (info->control.hw_key &&
+	    (info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP ||
+	     info->control.hw_key->cipher == WLAN_CIPHER_SUITE_CCMP ||
+	     info->control.hw_key->cipher == WL1271_CIPHER_SUITE_GEM)) {
+		u8 fw_lsb = result->tx_security_sequence_number_lsb;
+		u8 cur_lsb = wl->tx_security_last_seq_lsb;
+
+		/*
+		 * update security sequence number, taking care of potential
+		 * wrap-around
+		 */
+		wl->tx_security_seq += (fw_lsb - cur_lsb + 256) % 256;
+		wl->tx_security_last_seq_lsb = fw_lsb;
+	}
 
 	/* remove private header from packet */
 	skb_pull(skb, sizeof(struct wl1271_tx_hw_descr));
@@ -827,6 +868,7 @@ void wl1271_tx_reset(struct wl1271 *wl, bool reset_tx_queues)
 	}
 
 	wl->tx_queue_count = 0;
+	wl->stopped_queues_map = 0;
 
 	/*
 	 * Make sure the driver is at a consistent state, in case this
diff --git a/drivers/net/wireless/wl12xx/tx.h b/drivers/net/wireless/wl12xx/tx.h
index 832f9258d67..6b7bf3150ec 100644
--- a/drivers/net/wireless/wl12xx/tx.h
+++ b/drivers/net/wireless/wl12xx/tx.h
@@ -150,7 +150,7 @@ struct wl1271_tx_hw_res_descr {
 	   (from 1st EDCA AIFS counter until TX Complete). */
 	__le32 medium_delay;
 	/* LS-byte of last TKIP seq-num (saved per AC for recovery). */
-	u8 lsb_security_sequence_number;
+	u8 tx_security_sequence_number_lsb;
 	/* Retry count - number of transmissions without successful ACK.*/
 	u8 ack_failures;
 	/* The rate that succeeded getting ACK
@@ -182,6 +182,22 @@ static inline int wl1271_tx_get_queue(int queue)
 	}
 }
 
+static inline int wl1271_tx_get_mac80211_queue(int queue)
+{
+	switch (queue) {
+	case CONF_TX_AC_VO:
+		return 0;
+	case CONF_TX_AC_VI:
+		return 1;
+	case CONF_TX_AC_BE:
+		return 2;
+	case CONF_TX_AC_BK:
+		return 3;
+	default:
+		return 2;
+	}
+}
+
 void wl1271_tx_work(struct work_struct *work);
 void wl1271_tx_work_locked(struct wl1271 *wl);
 void wl1271_tx_complete(struct wl1271 *wl);
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index d7db6e77047..94bfc0a25d5 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -144,6 +144,7 @@ extern u32 wl12xx_debug_level;
 
 #define WL1271_TX_SECURITY_LO16(s) ((u16)((s) & 0xffff))
 #define WL1271_TX_SECURITY_HI32(s) ((u32)(((s) >> 16) & 0xffffffff))
+#define WL1271_TX_SQN_POST_RECOVERY_PADDING 0xff
 
 #define WL1271_CIPHER_SUITE_GEM 0x00147201
 
@@ -172,7 +173,6 @@ extern u32 wl12xx_debug_level;
 #define WL1271_PS_STA_MAX_BLOCKS  (2 * 9)
 
 #define WL1271_AP_BSS_INDEX        0
-#define WL1271_AP_DEF_INACTIV_SEC  300
 #define WL1271_AP_DEF_BEACON_EXP   20
 
 #define ACX_TX_DESCRIPTORS         32
@@ -424,7 +424,7 @@ struct wl1271 {
 	/* Accounting for allocated / available TX blocks on HW */
 	u32 tx_blocks_freed[NUM_TX_QUEUES];
 	u32 tx_blocks_available;
-	u32 tx_allocated_blocks;
+	u32 tx_allocated_blocks[NUM_TX_QUEUES];
 	u32 tx_results_count;
 
 	/* Transmitted TX packets counter for chipset interface */
@@ -439,6 +439,7 @@ struct wl1271 {
 	/* Frames scheduled for transmission, not handled yet */
 	struct sk_buff_head tx_queue[NUM_TX_QUEUES];
 	int tx_queue_count;
+	long stopped_queues_map;
 
 	/* Frames received, not handled yet by mac80211 */
 	struct sk_buff_head deferred_rx_queue;
@@ -454,9 +455,16 @@ struct wl1271 {
 	struct sk_buff *tx_frames[ACX_TX_DESCRIPTORS];
 	int tx_frames_cnt;
 
-	/* Security sequence number counters */
-	u8 tx_security_last_seq;
-	s64 tx_security_seq;
+	/*
+	 * Security sequence number
+	 *     bits 0-15: lower 16 bits part of sequence number
+	 *     bits 16-47: higher 32 bits part of sequence number
+	 *     bits 48-63: not in use
+	 */
+	u64 tx_security_seq;
+
+	/* 8 bits of the last sequence number in use */
+	u8 tx_security_last_seq_lsb;
 
 	/* FW Rx counter */
 	u32 rx_counter;
@@ -632,8 +640,8 @@ size_t wl12xx_copy_fwlog(struct wl1271 *wl, u8 *memblock, size_t maxlen);
 
 #define WL1271_DEFAULT_POWER_LEVEL 0
 
-#define WL1271_TX_QUEUE_LOW_WATERMARK  10
-#define WL1271_TX_QUEUE_HIGH_WATERMARK 25
+#define WL1271_TX_QUEUE_LOW_WATERMARK  32
+#define WL1271_TX_QUEUE_HIGH_WATERMARK 256
 
 #define WL1271_DEFERRED_QUEUE_LIMIT    64