From 42af657feb3481b1dfc130619b5e0d56abc4e0fc Mon Sep 17 00:00:00 2001
From: Li Fei <fei.li@intel.com>
Date: Thu, 28 Feb 2013 15:51:32 +0800
Subject: wl1251: call pm_runtime_put_sync in pm_runtime_get_sync failed case

Even in failed case of pm_runtime_get_sync, the usage_count
is incremented. In order to keep the usage_count with correct
value and runtime power management to behave correctly, call
pm_runtime_put(_sync) in such case.

Signed-off-by Liu Chuansheng <chuansheng.liu@intel.com>
Signed-off-by: Li Fei <fei.li@intel.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wl1251/sdio.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wl1251/sdio.c b/drivers/net/wireless/ti/wl1251/sdio.c
index e57ee48edff6..e2b3d9c541e8 100644
--- a/drivers/net/wireless/ti/wl1251/sdio.c
+++ b/drivers/net/wireless/ti/wl1251/sdio.c
@@ -186,8 +186,10 @@ static int wl1251_sdio_set_power(struct wl1251 *wl, bool enable)
 			wl->set_power(true);
 
 		ret = pm_runtime_get_sync(&func->dev);
-		if (ret < 0)
+		if (ret < 0) {
+			pm_runtime_put_sync(&func->dev);
 			goto out;
+		}
 
 		sdio_claim_host(func);
 		sdio_enable_func(func);
-- 
cgit v1.2.3


From 0c7cc7f22614f70f724c23db2b7f0d8d5b8ded69 Mon Sep 17 00:00:00 2001
From: Igal Chernobelsky <igalc@ti.com>
Date: Tue, 12 Mar 2013 17:19:34 +0200
Subject: wlcore: enter elp in force ps mode in 5ms

It is requiered to enter sleep mode with smaller delay in forced PS mode.
This fixes issue of testing force PS mode during VoIP traffic where packets
are sent every 20ms. Chip never enters ps mode with default 30 ms delay
in such test.

Signed-off-by: Igal Chernobelsky <igalc@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/ps.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/ps.c b/drivers/net/wireless/ti/wlcore/ps.c
index 9b7b6e2e4fbc..9654577efd01 100644
--- a/drivers/net/wireless/ti/wlcore/ps.c
+++ b/drivers/net/wireless/ti/wlcore/ps.c
@@ -29,6 +29,7 @@
 #define WL1271_WAKEUP_TIMEOUT 500
 
 #define ELP_ENTRY_DELAY  30
+#define ELP_ENTRY_DELAY_FORCE_PS  5
 
 void wl1271_elp_work(struct work_struct *work)
 {
@@ -98,7 +99,8 @@ void wl1271_ps_elp_sleep(struct wl1271 *wl)
 			return;
 	}
 
-	timeout = ELP_ENTRY_DELAY;
+	timeout = wl->conf.conn.forced_ps ?
+			ELP_ENTRY_DELAY_FORCE_PS : ELP_ENTRY_DELAY;
 	ieee80211_queue_delayed_work(wl->hw, &wl->elp_work,
 				     msecs_to_jiffies(timeout));
 }
-- 
cgit v1.2.3


From d21553f8900f735d2caedd1c6db75dbd67e5ab9e Mon Sep 17 00:00:00 2001
From: Igal Chernobelsky <igalc@ti.com>
Date: Tue, 12 Mar 2013 17:19:35 +0200
Subject: wlcore: set max num of Rx BA sessions per chip

Maximum number of supported RX BA sessions depends on chip type.
wl18xx supports 5 RX BA sessions while wl12xx supports 3.

Signed-off-by: Igal Chernobelsky <igalc@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wl12xx/main.c   | 1 +
 drivers/net/wireless/ti/wl12xx/wl12xx.h | 2 ++
 drivers/net/wireless/ti/wl18xx/main.c   | 1 +
 drivers/net/wireless/ti/wl18xx/wl18xx.h | 4 +++-
 drivers/net/wireless/ti/wlcore/acx.h    | 2 --
 drivers/net/wireless/ti/wlcore/main.c   | 2 +-
 drivers/net/wireless/ti/wlcore/wlcore.h | 3 +++
 7 files changed, 11 insertions(+), 4 deletions(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wl12xx/main.c b/drivers/net/wireless/ti/wl12xx/main.c
index 09694e39bb14..1c627da85083 100644
--- a/drivers/net/wireless/ti/wl12xx/main.c
+++ b/drivers/net/wireless/ti/wl12xx/main.c
@@ -723,6 +723,7 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
 	wl->sched_scan_templ_id_2_4 = CMD_TEMPL_CFG_PROBE_REQ_2_4;
 	wl->sched_scan_templ_id_5 = CMD_TEMPL_CFG_PROBE_REQ_5;
 	wl->max_channels_5 = WL12XX_MAX_CHANNELS_5GHZ;
+	wl->ba_rx_session_count_max = WL12XX_RX_BA_MAX_SESSIONS;
 out:
 	return ret;
 }
diff --git a/drivers/net/wireless/ti/wl12xx/wl12xx.h b/drivers/net/wireless/ti/wl12xx/wl12xx.h
index d4552857480c..222d03540200 100644
--- a/drivers/net/wireless/ti/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/ti/wl12xx/wl12xx.h
@@ -63,6 +63,8 @@
 
 #define WL12XX_NUM_MAC_ADDRESSES 2
 
+#define WL12XX_RX_BA_MAX_SESSIONS 3
+
 struct wl127x_rx_mem_pool_addr {
 	u32 addr;
 	u32 addr_extra;
diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c
index da3ef1b10a9c..b670776f9bb2 100644
--- a/drivers/net/wireless/ti/wl18xx/main.c
+++ b/drivers/net/wireless/ti/wl18xx/main.c
@@ -678,6 +678,7 @@ static int wl18xx_identify_chip(struct wl1271 *wl)
 	wl->sched_scan_templ_id_2_4 = CMD_TEMPL_PROBE_REQ_2_4_PERIODIC;
 	wl->sched_scan_templ_id_5 = CMD_TEMPL_PROBE_REQ_5_PERIODIC;
 	wl->max_channels_5 = WL18XX_MAX_CHANNELS_5GHZ;
+	wl->ba_rx_session_count_max = WL18XX_RX_BA_MAX_SESSIONS;
 out:
 	return ret;
 }
diff --git a/drivers/net/wireless/ti/wl18xx/wl18xx.h b/drivers/net/wireless/ti/wl18xx/wl18xx.h
index b6739e79efcf..9204e07ee432 100644
--- a/drivers/net/wireless/ti/wl18xx/wl18xx.h
+++ b/drivers/net/wireless/ti/wl18xx/wl18xx.h
@@ -29,7 +29,7 @@
 #define WL18XX_IFTYPE_VER	5
 #define WL18XX_MAJOR_VER	WLCORE_FW_VER_IGNORE
 #define WL18XX_SUBTYPE_VER	WLCORE_FW_VER_IGNORE
-#define WL18XX_MINOR_VER	28
+#define WL18XX_MINOR_VER	39
 
 #define WL18XX_CMD_MAX_SIZE          740
 
@@ -40,6 +40,8 @@
 
 #define WL18XX_NUM_MAC_ADDRESSES 3
 
+#define WL18XX_RX_BA_MAX_SESSIONS 5
+
 struct wl18xx_priv {
 	/* buffer for sending commands to FW */
 	u8 cmd_buf[WL18XX_CMD_MAX_SIZE];
diff --git a/drivers/net/wireless/ti/wlcore/acx.h b/drivers/net/wireless/ti/wlcore/acx.h
index 126536c6a393..1a61e8550b7b 100644
--- a/drivers/net/wireless/ti/wlcore/acx.h
+++ b/drivers/net/wireless/ti/wlcore/acx.h
@@ -728,8 +728,6 @@ struct wl1271_acx_ht_information {
 	u8 padding[2];
 } __packed;
 
-#define RX_BA_MAX_SESSIONS 3
-
 struct wl1271_acx_ba_initiator_policy {
 	struct acx_header header;
 
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 2c2ff3e1f849..3fc86c4d2c7b 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -4784,7 +4784,7 @@ static int wl1271_op_ampdu_action(struct ieee80211_hw *hw,
 			break;
 		}
 
-		if (wl->ba_rx_session_count >= RX_BA_MAX_SESSIONS) {
+		if (wl->ba_rx_session_count >= wl->ba_rx_session_count_max) {
 			ret = -EBUSY;
 			wl1271_error("exceeded max RX BA sessions");
 			break;
diff --git a/drivers/net/wireless/ti/wlcore/wlcore.h b/drivers/net/wireless/ti/wlcore/wlcore.h
index af9fecaefc30..0034979e97cb 100644
--- a/drivers/net/wireless/ti/wlcore/wlcore.h
+++ b/drivers/net/wireless/ti/wlcore/wlcore.h
@@ -390,6 +390,9 @@ struct wl1271 {
 	/* number of currently active RX BA sessions */
 	int ba_rx_session_count;
 
+	/* Maximum number of supported RX BA sessions */
+	int ba_rx_session_count_max;
+
 	/* AP-mode - number of currently connected stations */
 	int active_sta_count;
 
-- 
cgit v1.2.3


From 37c68ea6997aac2faf21b83c28eda3b1659c4d45 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Tue, 12 Mar 2013 17:19:36 +0200
Subject: wlcore: fix link count in single-link-PSM optimization

commit 144614f3eebd7d only allowed a single active link when
turning on the optimization, ignoring the fact that an AP has two
additional global links.
Use 3 links as an indication for a single active link. Use the
FW PSM bits to verify the extra active link belongs to the AP role.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/main.c | 10 +++++++---
 drivers/net/wireless/ti/wlcore/tx.c   | 10 +++++++---
 2 files changed, 14 insertions(+), 6 deletions(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 3fc86c4d2c7b..389ae1a459a5 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -332,10 +332,9 @@ static void wl12xx_irq_ps_regulate_link(struct wl1271 *wl,
 					struct wl12xx_vif *wlvif,
 					u8 hlid, u8 tx_pkts)
 {
-	bool fw_ps, single_link;
+	bool fw_ps;
 
 	fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
-	single_link = (wl->active_link_count == 1);
 
 	/*
 	 * Wake up from high level PS if the STA is asleep with too little
@@ -348,8 +347,13 @@ static void wl12xx_irq_ps_regulate_link(struct wl1271 *wl,
 	 * Start high-level PS if the STA is asleep with enough blocks in FW.
 	 * Make an exception if this is the only connected link. In this
 	 * case FW-memory congestion is less of a problem.
+	 * Note that a single connected STA means 3 active links, since we must
+	 * account for the global and broadcast AP links. The "fw_ps" check
+	 * assures us the third link is a STA connected to the AP. Otherwise
+	 * the FW would not set the PSM bit.
 	 */
-	else if (!single_link && fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
+	else if (wl->active_link_count > 3 && fw_ps &&
+		 tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
 		wl12xx_ps_link_start(wl, wlvif, hlid, true);
 }
 
diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index ece392c54d9c..07a3e4215a05 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -104,7 +104,7 @@ static void wl1271_tx_regulate_link(struct wl1271 *wl,
 				    struct wl12xx_vif *wlvif,
 				    u8 hlid)
 {
-	bool fw_ps, single_link;
+	bool fw_ps;
 	u8 tx_pkts;
 
 	if (WARN_ON(!test_bit(hlid, wlvif->links_map)))
@@ -112,15 +112,19 @@ static void wl1271_tx_regulate_link(struct wl1271 *wl,
 
 	fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
 	tx_pkts = wl->links[hlid].allocated_pkts;
-	single_link = (wl->active_link_count == 1);
 
 	/*
 	 * if in FW PS and there is enough data in FW we can put the link
 	 * into high-level PS and clean out its TX queues.
 	 * Make an exception if this is the only connected link. In this
 	 * case FW-memory congestion is less of a problem.
+	 * Note that a single connected STA means 3 active links, since we must
+	 * account for the global and broadcast AP links. The "fw_ps" check
+	 * assures us the third link is a STA connected to the AP. Otherwise
+	 * the FW would not set the PSM bit.
 	 */
-	if (!single_link && fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
+	if (wl->active_link_count > 3 && fw_ps &&
+	    tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
 		wl12xx_ps_link_start(wl, wlvif, hlid, true);
 }
 
-- 
cgit v1.2.3


From 2fec3d27660fe4fe140374cd7d84ec799f3ebb15 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Tue, 12 Mar 2013 17:19:37 +0200
Subject: wlcore: don't risk using stale HLID during .sta_state callback

The HLID of a STA can change, particularly during recovery. Don't cache
the HLID before it was potentially allocated.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/main.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 389ae1a459a5..c3e2471c46f0 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -4620,13 +4620,11 @@ static int wl12xx_update_sta_state(struct wl1271 *wl,
 				   enum ieee80211_sta_state new_state)
 {
 	struct wl1271_station *wl_sta;
-	u8 hlid;
 	bool is_ap = wlvif->bss_type == BSS_TYPE_AP_BSS;
 	bool is_sta = wlvif->bss_type == BSS_TYPE_STA_BSS;
 	int ret;
 
 	wl_sta = (struct wl1271_station *)sta->drv_priv;
-	hlid = wl_sta->hlid;
 
 	/* Add station (AP mode) */
 	if (is_ap &&
@@ -4652,12 +4650,12 @@ static int wl12xx_update_sta_state(struct wl1271 *wl,
 	/* Authorize station (AP mode) */
 	if (is_ap &&
 	    new_state == IEEE80211_STA_AUTHORIZED) {
-		ret = wl12xx_cmd_set_peer_state(wl, wlvif, hlid);
+		ret = wl12xx_cmd_set_peer_state(wl, wlvif, wl_sta->hlid);
 		if (ret < 0)
 			return ret;
 
 		ret = wl1271_acx_set_ht_capabilities(wl, &sta->ht_cap, true,
-						     hlid);
+						     wl_sta->hlid);
 		if (ret)
 			return ret;
 
-- 
cgit v1.2.3


From 93d5d10085ad7bf89a9e36c6ba117b9afe2de823 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Tue, 12 Mar 2013 17:19:38 +0200
Subject: wlcore: consolidate tx_seq handling on recovery

Accumulate the total number of sent packets per-link to find out how far
the encryption sequence number has progressed. Use this number as the
initial security sequence number after recovery.

This consolidates security sequence handling for both chip families, as
we no longer have to rely on 12xx specific Tx completion.

A fortunate side effect of this is correct management of seq numbers for
AP roles and multi-role scenarios.

When a link is removed we save the last seq number on a persistent part
of the wlvif. This helps the data survive through recoveries/suspends,
which also entail changes in the hlid of the link.

This functionality is STA only currently.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/cmd.c      | 26 +++++++++++++++
 drivers/net/wireless/ti/wlcore/debugfs.c  |  3 +-
 drivers/net/wireless/ti/wlcore/main.c     | 55 ++++++++++++++++---------------
 drivers/net/wireless/ti/wlcore/tx.c       | 19 -----------
 drivers/net/wireless/ti/wlcore/wlcore_i.h | 20 ++++++-----
 5 files changed, 67 insertions(+), 56 deletions(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/cmd.c b/drivers/net/wireless/ti/wlcore/cmd.c
index 6331f9e1cb39..56d248a0acc1 100644
--- a/drivers/net/wireless/ti/wlcore/cmd.c
+++ b/drivers/net/wireless/ti/wlcore/cmd.c
@@ -327,6 +327,14 @@ int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 	wl->links[link].prev_freed_pkts =
 			wl->fw_status_2->counters.tx_lnk_free_pkts[link];
 	wl->links[link].wlvif = wlvif;
+
+	/*
+	 * Take saved value for total freed packets from wlvif, in case this is
+	 * recovery/resume
+	 */
+	if (wlvif->bss_type != BSS_TYPE_AP_BSS)
+		wl->links[link].total_freed_pkts = wlvif->total_freed_pkts;
+
 	*hlid = link;
 
 	wl->active_link_count++;
@@ -358,6 +366,24 @@ void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 	wl1271_tx_reset_link_queues(wl, *hlid);
 	wl->links[*hlid].wlvif = NULL;
 
+	if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
+		/*
+		 * save the total freed packets in the wlvif, in case this is
+		 * recovery or suspend
+		 */
+		wlvif->total_freed_pkts = wl->links[*hlid].total_freed_pkts;
+
+		/*
+		 * increment the initial seq number on recovery to account for
+		 * transmitted packets that we haven't yet got in the FW status
+		 */
+		if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
+			wlvif->total_freed_pkts +=
+					WL1271_TX_SQN_POST_RECOVERY_PADDING;
+	}
+
+	wl->links[*hlid].total_freed_pkts = 0;
+
 	*hlid = WL12XX_INVALID_LINK_ID;
 	wl->active_link_count--;
 	WARN_ON_ONCE(wl->active_link_count < 0);
diff --git a/drivers/net/wireless/ti/wlcore/debugfs.c b/drivers/net/wireless/ti/wlcore/debugfs.c
index e70a7c864865..c3e1f79c7856 100644
--- a/drivers/net/wireless/ti/wlcore/debugfs.c
+++ b/drivers/net/wireless/ti/wlcore/debugfs.c
@@ -598,8 +598,7 @@ static ssize_t vifs_state_read(struct file *file, char __user *user_buf,
 		VIF_STATE_PRINT_INT(last_rssi_event);
 		VIF_STATE_PRINT_INT(ba_support);
 		VIF_STATE_PRINT_INT(ba_allowed);
-		VIF_STATE_PRINT_LLHEX(tx_security_seq);
-		VIF_STATE_PRINT_INT(tx_security_last_seq_lsb);
+		VIF_STATE_PRINT_LLHEX(total_freed_pkts);
 	}
 
 #undef VIF_STATE_PRINT_INT
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index c3e2471c46f0..c1a60cdacd04 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -418,13 +418,21 @@ static int wlcore_fw_status(struct wl1271 *wl,
 
 
 	for_each_set_bit(i, wl->links_map, WL12XX_MAX_LINKS) {
+		u8 diff;
 		lnk = &wl->links[i];
+
 		/* prevent wrap-around in freed-packets counter */
-		lnk->allocated_pkts -=
-			(status_2->counters.tx_lnk_free_pkts[i] -
-			 lnk->prev_freed_pkts) & 0xff;
+		diff = (status_2->counters.tx_lnk_free_pkts[i] -
+		       lnk->prev_freed_pkts) & 0xff;
+
+		if (diff == 0)
+			continue;
 
+		lnk->allocated_pkts -= diff;
 		lnk->prev_freed_pkts = status_2->counters.tx_lnk_free_pkts[i];
+
+		/* accumulate the prev_freed_pkts counter */
+		lnk->total_freed_pkts += diff;
 	}
 
 	/* prevent wrap-around in total blocks counter */
@@ -923,18 +931,6 @@ static void wl1271_recovery_work(struct work_struct *work)
 		goto out_unlock;
 	}
 
-	/*
-	 * Advance security sequence number to overcome potential progress
-	 * in the firmware during recovery. This doens't hurt if the network is
-	 * not encrypted.
-	 */
-	wl12xx_for_each_wlvif(wl, wlvif) {
-		if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) ||
-		    test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags))
-			wlvif->tx_security_seq +=
-				WL1271_TX_SQN_POST_RECOVERY_PADDING;
-	}
-
 	/* Prevent spurious TX during FW restart */
 	wlcore_stop_queues(wl, WLCORE_QUEUE_STOP_REASON_FW_RESTART);
 
@@ -2864,10 +2860,6 @@ static int wlcore_unset_assoc(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 				     wlvif->sta.klv_template_id,
 				     ACX_KEEP_ALIVE_TPL_INVALID);
 
-	/* reset TX security counters on a clean disconnect */
-	wlvif->tx_security_last_seq_lsb = 0;
-	wlvif->tx_security_seq = 0;
-
 	return 0;
 }
 
@@ -3266,6 +3258,7 @@ int wlcore_set_key(struct wl1271 *wl, enum set_key_cmd cmd,
 	u32 tx_seq_32 = 0;
 	u16 tx_seq_16 = 0;
 	u8 key_type;
+	u8 hlid;
 
 	wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
 
@@ -3275,6 +3268,22 @@ int wlcore_set_key(struct wl1271 *wl, enum set_key_cmd cmd,
 		     key_conf->keylen, key_conf->flags);
 	wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
 
+	if (wlvif->bss_type == BSS_TYPE_AP_BSS)
+		if (sta) {
+			struct wl1271_station *wl_sta = (void *)sta->drv_priv;
+			hlid = wl_sta->hlid;
+		} else {
+			hlid = wlvif->ap.bcast_hlid;
+		}
+	else
+		hlid = wlvif->sta.hlid;
+
+	if (hlid != WL12XX_INVALID_LINK_ID) {
+		u64 tx_seq = wl->links[hlid].total_freed_pkts;
+		tx_seq_32 = WL1271_TX_SECURITY_HI32(tx_seq);
+		tx_seq_16 = WL1271_TX_SECURITY_LO16(tx_seq);
+	}
+
 	switch (key_conf->cipher) {
 	case WLAN_CIPHER_SUITE_WEP40:
 	case WLAN_CIPHER_SUITE_WEP104:
@@ -3284,22 +3293,14 @@ int wlcore_set_key(struct wl1271 *wl, enum set_key_cmd cmd,
 		break;
 	case WLAN_CIPHER_SUITE_TKIP:
 		key_type = KEY_TKIP;
-
 		key_conf->hw_key_idx = key_conf->keyidx;
-		tx_seq_32 = WL1271_TX_SECURITY_HI32(wlvif->tx_security_seq);
-		tx_seq_16 = WL1271_TX_SECURITY_LO16(wlvif->tx_security_seq);
 		break;
 	case WLAN_CIPHER_SUITE_CCMP:
 		key_type = KEY_AES;
-
 		key_conf->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
-		tx_seq_32 = WL1271_TX_SECURITY_HI32(wlvif->tx_security_seq);
-		tx_seq_16 = WL1271_TX_SECURITY_LO16(wlvif->tx_security_seq);
 		break;
 	case WL1271_CIPHER_SUITE_GEM:
 		key_type = KEY_GEM;
-		tx_seq_32 = WL1271_TX_SECURITY_HI32(wlvif->tx_security_seq);
-		tx_seq_16 = WL1271_TX_SECURITY_LO16(wlvif->tx_security_seq);
 		break;
 	default:
 		wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index 07a3e4215a05..859955649c97 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -932,25 +932,6 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl,
 
 	wl->stats.retry_count += result->ack_failures;
 
-	/*
-	 * 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 = wlvif->tx_security_last_seq_lsb;
-
-		/*
-		 * update security sequence number, taking care of potential
-		 * wrap-around
-		 */
-		wlvif->tx_security_seq += (fw_lsb - cur_lsb) & 0xff;
-		wlvif->tx_security_last_seq_lsb = fw_lsb;
-	}
-
 	/* remove private header from packet */
 	skb_pull(skb, sizeof(struct wl1271_tx_hw_descr));
 
diff --git a/drivers/net/wireless/ti/wlcore/wlcore_i.h b/drivers/net/wireless/ti/wlcore/wlcore_i.h
index c845b0ef7f4b..47d2f6000a42 100644
--- a/drivers/net/wireless/ti/wlcore/wlcore_i.h
+++ b/drivers/net/wireless/ti/wlcore/wlcore_i.h
@@ -274,6 +274,13 @@ struct wl1271_link {
 
 	/* The wlvif this link belongs to. Might be null for global links */
 	struct wl12xx_vif *wlvif;
+
+	/*
+	 * total freed FW packets on the link - used for tracking the
+	 * AES/TKIP PN across recoveries. Re-initialized each time
+	 * from the wl1271_station structure.
+	 */
+	u64 total_freed_pkts;
 };
 
 #define WL1271_MAX_RX_FILTERS 5
@@ -449,16 +456,13 @@ struct wl12xx_vif {
 	 */
 	struct {
 		u8 persistent[0];
+
 		/*
-		 * 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
+		 * total freed FW packets on the link - used for
+		 * storing the AES/TKIP PN during recovery, as this
+		 * structure is not zeroed out.
 		 */
-		u64 tx_security_seq;
-
-		/* 8 bits of the last sequence number in use */
-		u8 tx_security_last_seq_lsb;
+		u64 total_freed_pkts;
 	};
 };
 
-- 
cgit v1.2.3


From 0a9ffac09f772edee60abf3a0fe00f7bb5335c51 Mon Sep 17 00:00:00 2001
From: Nadim Zubidat <nadimz@ti.com>
Date: Tue, 12 Mar 2013 17:19:39 +0200
Subject: wlcore: report rssi from roaming statistics

report the average beacon rssi which is calculated
by firmware for roaming statistics instead of the
last rx packet rssi. this results a more accurate
rssi reporting

Signed-off-by: Nadim Zubidat <nadimz@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/acx.c  | 29 +++++++++++++++++++++++++++++
 drivers/net/wireless/ti/wlcore/acx.h  | 14 ++++++++++++++
 drivers/net/wireless/ti/wlcore/main.c | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 77 insertions(+)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/acx.c b/drivers/net/wireless/ti/wlcore/acx.c
index c79654323396..7a970cd9c555 100644
--- a/drivers/net/wireless/ti/wlcore/acx.c
+++ b/drivers/net/wireless/ti/wlcore/acx.c
@@ -1736,6 +1736,35 @@ out:
 
 }
 
+int wlcore_acx_average_rssi(struct wl1271 *wl, struct wl12xx_vif *wlvif,
+			    s8 *avg_rssi)
+{
+	struct acx_roaming_stats *acx;
+	int ret = 0;
+
+	wl1271_debug(DEBUG_ACX, "acx roaming statistics");
+
+	acx = kzalloc(sizeof(*acx), GFP_KERNEL);
+	if (!acx) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	acx->role_id = wlvif->role_id;
+	ret = wl1271_cmd_interrogate(wl, ACX_ROAMING_STATISTICS_TBL,
+				     acx, sizeof(*acx));
+	if (ret	< 0) {
+		wl1271_warning("acx roaming statistics failed: %d", ret);
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	*avg_rssi = acx->rssi_beacon;
+out:
+	kfree(acx);
+	return ret;
+}
+
 #ifdef CONFIG_PM
 /* Set the global behaviour of RX filters - On/Off + default action */
 int wl1271_acx_default_rx_filter_enable(struct wl1271 *wl, bool enable,
diff --git a/drivers/net/wireless/ti/wlcore/acx.h b/drivers/net/wireless/ti/wlcore/acx.h
index 1a61e8550b7b..6dcfad9b0472 100644
--- a/drivers/net/wireless/ti/wlcore/acx.h
+++ b/drivers/net/wireless/ti/wlcore/acx.h
@@ -953,6 +953,18 @@ struct acx_rx_filter_cfg {
 	u8 fields[0];
 } __packed;
 
+struct acx_roaming_stats {
+	struct acx_header header;
+
+	u8	role_id;
+	u8	pad[3];
+	u32	missed_beacons;
+	u8	snr_data;
+	u8	snr_bacon;
+	s8	rssi_data;
+	s8	rssi_beacon;
+} __packed;
+
 enum {
 	ACX_WAKE_UP_CONDITIONS           = 0x0000,
 	ACX_MEM_CFG                      = 0x0001,
@@ -1110,6 +1122,8 @@ int wl1271_acx_set_inconnection_sta(struct wl1271 *wl, u8 *addr);
 int wl1271_acx_fm_coex(struct wl1271 *wl);
 int wl12xx_acx_set_rate_mgmt_params(struct wl1271 *wl);
 int wl12xx_acx_config_hangover(struct wl1271 *wl);
+int wlcore_acx_average_rssi(struct wl1271 *wl, struct wl12xx_vif *wlvif,
+			    s8 *avg_rssi);
 
 #ifdef CONFIG_PM
 int wl1271_acx_default_rx_filter_enable(struct wl1271 *wl, bool enable,
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index c1a60cdacd04..bf86c71d8888 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -5094,6 +5094,39 @@ static void wlcore_op_sta_rc_update(struct ieee80211_hw *hw,
 	wlcore_hw_sta_rc_update(wl, wlvif, sta, changed);
 }
 
+static int wlcore_op_get_rssi(struct ieee80211_hw *hw,
+			       struct ieee80211_vif *vif,
+			       struct ieee80211_sta *sta,
+			       s8 *rssi_dbm)
+{
+	struct wl1271 *wl = hw->priv;
+	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
+	int ret = 0;
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 get_rssi");
+
+	mutex_lock(&wl->mutex);
+
+	if (unlikely(wl->state != WLCORE_STATE_ON))
+		goto out;
+
+	ret = wl1271_ps_elp_wakeup(wl);
+	if (ret < 0)
+		goto out_sleep;
+
+	ret = wlcore_acx_average_rssi(wl, wlvif, rssi_dbm);
+	if (ret < 0)
+		goto out_sleep;
+
+out_sleep:
+	wl1271_ps_elp_sleep(wl);
+
+out:
+	mutex_unlock(&wl->mutex);
+
+	return ret;
+}
+
 static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
 {
 	struct wl1271 *wl = hw->priv;
@@ -5293,6 +5326,7 @@ static const struct ieee80211_ops wl1271_ops = {
 	.assign_vif_chanctx = wlcore_op_assign_vif_chanctx,
 	.unassign_vif_chanctx = wlcore_op_unassign_vif_chanctx,
 	.sta_rc_update = wlcore_op_sta_rc_update,
+	.get_rssi = wlcore_op_get_rssi,
 	CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
 };
 
-- 
cgit v1.2.3


From 8910cfa3ac022feebfe1c4ae021afc34a1c1af25 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Tue, 12 Mar 2013 17:19:40 +0200
Subject: wlcore: change warn on missing lock in wlcore_queue_xx funcs

On !CONFIG_SMP builds spin_is_locked always returns 0. Assert the
locking using assert_spin_locked, which is written to behave correctly
in all cases.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/tx.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index 859955649c97..e0d9504c9ef7 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -24,6 +24,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/etherdevice.h>
+#include <linux/spinlock.h>
 
 #include "wlcore.h"
 #include "debug.h"
@@ -1289,7 +1290,7 @@ bool wlcore_is_queue_stopped_by_reason_locked(struct wl1271 *wl,
 {
 	int hwq = wlcore_tx_get_mac80211_queue(wlvif, queue);
 
-	WARN_ON_ONCE(!spin_is_locked(&wl->wl_lock));
+	assert_spin_locked(&wl->wl_lock);
 	return test_bit(reason, &wl->queue_stop_reasons[hwq]);
 }
 
@@ -1298,6 +1299,6 @@ bool wlcore_is_queue_stopped_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 {
 	int hwq = wlcore_tx_get_mac80211_queue(wlvif, queue);
 
-	WARN_ON_ONCE(!spin_is_locked(&wl->wl_lock));
+	assert_spin_locked(&wl->wl_lock);
 	return !!wl->queue_stop_reasons[hwq];
 }
-- 
cgit v1.2.3


From c0ad2f2e66ffc46eb474d0060db9af254ed69177 Mon Sep 17 00:00:00 2001
From: Eyal Shapira <eyal@wizery.com>
Date: Tue, 12 Mar 2013 17:19:41 +0200
Subject: wlcore: don't attempt to roam in case of p2p

For STA we report beacon loss to higher levels so that wpa_s
can attempt to roam without disconnecting. In case of P2P CLI
we don't want to attempt roaming and instead disconnect immediately
upon beacon loss.

Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/event.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/event.c b/drivers/net/wireless/ti/wlcore/event.c
index 70f289aa1bc6..67f61689b49e 100644
--- a/drivers/net/wireless/ti/wlcore/event.c
+++ b/drivers/net/wireless/ti/wlcore/event.c
@@ -237,6 +237,14 @@ void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap)
 		    !test_bit(wlvif->role_id , &roles_bitmap))
 			continue;
 
+		vif = wl12xx_wlvif_to_vif(wlvif);
+
+		/* don't attempt roaming in case of p2p */
+		if (wlvif->p2p) {
+			ieee80211_connection_loss(vif);
+			continue;
+		}
+
 		/*
 		 * if the work is already queued, it should take place.
 		 * We don't want to delay the connection loss
@@ -246,7 +254,6 @@ void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap)
 					     &wlvif->connection_loss_work,
 					     msecs_to_jiffies(delay));
 
-		vif = wl12xx_wlvif_to_vif(wlvif);
 		ieee80211_cqm_rssi_notify(
 				vif,
 				NL80211_CQM_RSSI_BEACON_LOSS_EVENT,
-- 
cgit v1.2.3


From f9ae0852655b219095f45e26871c2e00805e6344 Mon Sep 17 00:00:00 2001
From: Victor Goldenshtein <victorg@ti.com>
Date: Tue, 12 Mar 2013 17:19:42 +0200
Subject: wl18xx: print chip info during boot

Print board type, PG with metal and ROM versions.
This might help debugging HW related issues.

Signed-off-by: Victor Goldenshtein <victorg@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wl18xx/main.c | 24 +++++++++++++++++++++++-
 drivers/net/wireless/ti/wl18xx/reg.h  | 29 +++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+), 1 deletion(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c
index b670776f9bb2..9fa692d11025 100644
--- a/drivers/net/wireless/ti/wl18xx/main.c
+++ b/drivers/net/wireless/ti/wl18xx/main.c
@@ -1145,6 +1145,7 @@ static u32 wl18xx_ap_get_mimo_wide_rate_mask(struct wl1271 *wl,
 static int wl18xx_get_pg_ver(struct wl1271 *wl, s8 *ver)
 {
 	u32 fuse;
+	s8 rom = 0, metal = 0, pg_ver = 0, rdl_ver = 0;
 	int ret;
 
 	ret = wlcore_set_partition(wl, &wl->ptable[PART_TOP_PRCM_ELP_SOC]);
@@ -1155,8 +1156,29 @@ static int wl18xx_get_pg_ver(struct wl1271 *wl, s8 *ver)
 	if (ret < 0)
 		goto out;
 
+	pg_ver = (fuse & WL18XX_PG_VER_MASK) >> WL18XX_PG_VER_OFFSET;
+	rom = (fuse & WL18XX_ROM_VER_MASK) >> WL18XX_ROM_VER_OFFSET;
+
+	if (rom <= 0xE)
+		metal = (fuse & WL18XX_METAL_VER_MASK) >>
+			WL18XX_METAL_VER_OFFSET;
+	else
+		metal = (fuse & WL18XX_NEW_METAL_VER_MASK) >>
+			WL18XX_NEW_METAL_VER_OFFSET;
+
+	ret = wlcore_read32(wl, WL18XX_REG_FUSE_DATA_2_3, &fuse);
+	if (ret < 0)
+		goto out;
+
+	rdl_ver = (fuse & WL18XX_RDL_VER_MASK) >> WL18XX_RDL_VER_OFFSET;
+	if (rdl_ver > RDL_MAX)
+		rdl_ver = RDL_NONE;
+
+	wl1271_info("wl18xx HW: RDL %d, %s, PG %x.%x (ROM %x)",
+		    rdl_ver, rdl_names[rdl_ver], pg_ver, metal, rom);
+
 	if (ver)
-		*ver = (fuse & WL18XX_PG_VER_MASK) >> WL18XX_PG_VER_OFFSET;
+		*ver = pg_ver;
 
 	ret = wlcore_set_partition(wl, &wl->ptable[PART_BOOT]);
 
diff --git a/drivers/net/wireless/ti/wl18xx/reg.h b/drivers/net/wireless/ti/wl18xx/reg.h
index 937b71d8783f..6306e04cd258 100644
--- a/drivers/net/wireless/ti/wl18xx/reg.h
+++ b/drivers/net/wireless/ti/wl18xx/reg.h
@@ -131,6 +131,16 @@
 #define WL18XX_REG_FUSE_DATA_1_3	0xA0260C
 #define WL18XX_PG_VER_MASK		0x70
 #define WL18XX_PG_VER_OFFSET		4
+#define WL18XX_ROM_VER_MASK		0x3
+#define WL18XX_ROM_VER_OFFSET		0
+#define WL18XX_METAL_VER_MASK		0xC
+#define WL18XX_METAL_VER_OFFSET		2
+#define WL18XX_NEW_METAL_VER_MASK	0x180
+#define WL18XX_NEW_METAL_VER_OFFSET	7
+
+#define WL18XX_REG_FUSE_DATA_2_3	0xA02614
+#define WL18XX_RDL_VER_MASK		0x1f00
+#define WL18XX_RDL_VER_OFFSET		8
 
 #define WL18XX_REG_FUSE_BD_ADDR_1	0xA02602
 #define WL18XX_REG_FUSE_BD_ADDR_2	0xA02606
@@ -188,4 +198,23 @@ enum {
 	NUM_BOARD_TYPES,
 };
 
+enum {
+	RDL_NONE	= 0,
+	RDL_1_HP	= 1,
+	RDL_2_SP	= 2,
+	RDL_3_HP	= 3,
+	RDL_4_SP	= 4,
+
+	_RDL_LAST,
+	RDL_MAX = _RDL_LAST - 1,
+};
+
+static const char * const rdl_names[] = {
+	[RDL_NONE]	= "",
+	[RDL_1_HP]	= "1853 SISO",
+	[RDL_2_SP]	= "1857 MIMO",
+	[RDL_3_HP]	= "1893 SISO",
+	[RDL_4_SP]	= "1897 MIMO",
+};
+
 #endif /* __REG_H__ */
-- 
cgit v1.2.3


From 5a99610c99625ae86d76014da25659dff72e8792 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Tue, 12 Mar 2013 17:19:43 +0200
Subject: wlcore: free AP global links properly on recovery

Dont use free_sta() on AP global links. It would fail an internal check
within the function and various structures within the link struct would
not be reset.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/main.c | 3 ++-
 drivers/net/wireless/ti/wlcore/tx.c   | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index bf86c71d8888..4da558460449 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -2523,6 +2523,8 @@ static void __wl1271_op_remove_interface(struct wl1271 *wl,
 		wl1271_ps_elp_sleep(wl);
 	}
 deinit:
+	wl12xx_tx_reset_wlvif(wl, wlvif);
+
 	/* clear all hlids (except system_hlid) */
 	wlvif->dev_hlid = WL12XX_INVALID_LINK_ID;
 
@@ -2546,7 +2548,6 @@ deinit:
 
 	dev_kfree_skb(wlvif->probereq);
 	wlvif->probereq = NULL;
-	wl12xx_tx_reset_wlvif(wl, wlvif);
 	if (wl->last_wlvif == wlvif)
 		wl->last_wlvif = NULL;
 	list_del(&wlvif->list);
diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index e0d9504c9ef7..85003c063b95 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -1047,7 +1047,8 @@ void wl12xx_tx_reset_wlvif(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 
 	/* TX failure */
 	for_each_set_bit(i, wlvif->links_map, WL12XX_MAX_LINKS) {
-		if (wlvif->bss_type == BSS_TYPE_AP_BSS) {
+		if (wlvif->bss_type == BSS_TYPE_AP_BSS &&
+		    i != wlvif->ap.bcast_hlid && i != wlvif->ap.global_hlid) {
 			/* this calls wl12xx_free_link */
 			wl1271_free_sta(wl, wlvif, i);
 		} else {
-- 
cgit v1.2.3


From 0e752df6fda25993acc30e1162808fbb2543be03 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Tue, 12 Mar 2013 17:19:44 +0200
Subject: wlcore: AP-mode - recover security seq num for stations

Save the sequence number of the broadcast AP link in the wlvif. For each
connected station, save the sequence number in the drv_priv part of
ieee80211_sta. Use the saved numbers on recovery/resume, with the
obligatory increment on recovery.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/cmd.c      |  8 +++++++-
 drivers/net/wireless/ti/wlcore/main.c     | 28 ++++++++++++++++++++++++++++
 drivers/net/wireless/ti/wlcore/wlcore_i.h |  9 +++++++++
 3 files changed, 44 insertions(+), 1 deletion(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/cmd.c b/drivers/net/wireless/ti/wlcore/cmd.c
index 56d248a0acc1..c9e060795d13 100644
--- a/drivers/net/wireless/ti/wlcore/cmd.c
+++ b/drivers/net/wireless/ti/wlcore/cmd.c
@@ -366,7 +366,9 @@ void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 	wl1271_tx_reset_link_queues(wl, *hlid);
 	wl->links[*hlid].wlvif = NULL;
 
-	if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
+	if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
+	    (wlvif->bss_type == BSS_TYPE_AP_BSS &&
+	     *hlid == wlvif->ap.bcast_hlid)) {
 		/*
 		 * save the total freed packets in the wlvif, in case this is
 		 * recovery or suspend
@@ -635,6 +637,10 @@ int wl12xx_cmd_role_start_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 	if (ret < 0)
 		goto out_free_global;
 
+	/* use the previous security seq, if this is a recovery/resume */
+	wl->links[wlvif->ap.bcast_hlid].total_freed_pkts =
+						wlvif->total_freed_pkts;
+
 	cmd->role_id = wlvif->role_id;
 	cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
 	cmd->ap.bss_index = WL1271_AP_BSS_INDEX;
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 4da558460449..43865d1348ec 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -4505,6 +4505,9 @@ static int wl1271_allocate_sta(struct wl1271 *wl,
 		return -EBUSY;
 	}
 
+	/* use the previous security seq, if this is a recovery/resume */
+	wl->links[wl_sta->hlid].total_freed_pkts = wl_sta->total_freed_pkts;
+
 	set_bit(wl_sta->hlid, wlvif->ap.sta_hlid_map);
 	memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
 	wl->active_sta_count++;
@@ -4513,12 +4516,37 @@ static int wl1271_allocate_sta(struct wl1271 *wl,
 
 void wl1271_free_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid)
 {
+	struct wl1271_station *wl_sta;
+	struct ieee80211_sta *sta;
+	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
+
 	if (!test_bit(hlid, wlvif->ap.sta_hlid_map))
 		return;
 
 	clear_bit(hlid, wlvif->ap.sta_hlid_map);
 	__clear_bit(hlid, &wl->ap_ps_map);
 	__clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
+
+	/*
+	 * save the last used PN in the private part of iee80211_sta,
+	 * in case of recovery/suspend
+	 */
+	rcu_read_lock();
+	sta = ieee80211_find_sta(vif, wl->links[hlid].addr);
+	if (sta) {
+		wl_sta = (void *)sta->drv_priv;
+		wl_sta->total_freed_pkts = wl->links[hlid].total_freed_pkts;
+
+		/*
+		 * increment the initial seq number on recovery to account for
+		 * transmitted packets that we haven't yet got in the FW status
+		 */
+		if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
+			wl_sta->total_freed_pkts +=
+					WL1271_TX_SQN_POST_RECOVERY_PADDING;
+	}
+	rcu_read_unlock();
+
 	wl12xx_free_link(wl, wlvif, &hlid);
 	wl->active_sta_count--;
 
diff --git a/drivers/net/wireless/ti/wlcore/wlcore_i.h b/drivers/net/wireless/ti/wlcore/wlcore_i.h
index 47d2f6000a42..7b55ef9c4288 100644
--- a/drivers/net/wireless/ti/wlcore/wlcore_i.h
+++ b/drivers/net/wireless/ti/wlcore/wlcore_i.h
@@ -325,6 +325,13 @@ struct wl12xx_rx_filter {
 struct wl1271_station {
 	u8 hlid;
 	bool in_connection;
+
+	/*
+	 * total freed FW packets on the link to the STA - used for tracking the
+	 * AES/TKIP PN across recoveries. Re-initialized each time from the
+	 * wl1271_station structure.
+	 */
+	u64 total_freed_pkts;
 };
 
 struct wl12xx_vif {
@@ -461,6 +468,8 @@ struct wl12xx_vif {
 		 * total freed FW packets on the link - used for
 		 * storing the AES/TKIP PN during recovery, as this
 		 * structure is not zeroed out.
+		 * For STA this holds the PN of the link to the AP.
+		 * For AP this holds the PN of the broadcast link.
 		 */
 		u64 total_freed_pkts;
 	};
-- 
cgit v1.2.3


From 75592be5e35b31eb28dacf578cfe82f0e9bc0ac0 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Tue, 12 Mar 2013 17:19:45 +0200
Subject: wlcore: correctly check state before regdomain conf

The wlcore state was checked without the mutex being taken. This leads
to WARN_ONs sometimes if a notification arrives when the driver
is on, but the mutex is only taken after it is off. This usually
happens if stopping the driver while connected to a network.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 43865d1348ec..248daa9bb5fe 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -108,8 +108,7 @@ static void wl1271_reg_notify(struct wiphy *wiphy,
 
 	}
 
-	if (likely(wl->state == WLCORE_STATE_ON))
-		wlcore_regdomain_config(wl);
+	wlcore_regdomain_config(wl);
 }
 
 static int wl1271_set_rx_streaming(struct wl1271 *wl, struct wl12xx_vif *wlvif,
@@ -3364,6 +3363,10 @@ void wlcore_regdomain_config(struct wl1271 *wl)
 		return;
 
 	mutex_lock(&wl->mutex);
+
+	if (unlikely(wl->state != WLCORE_STATE_ON))
+		goto out;
+
 	ret = wl1271_ps_elp_wakeup(wl);
 	if (ret < 0)
 		goto out;
-- 
cgit v1.2.3


From abca1237820a7d9a087b2744a2abd1026364d7b7 Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Tue, 12 Mar 2013 17:19:46 +0200
Subject: wlcore: consider dummy packets when tx queues are empty

Don't ignore dummy packets when our queues are empty. This causes dummy
packets never to be sent when traffic is not suspended by FW thresholds,
which happens only in high Tx throughput situations. This may hurt Rx
performance.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/tx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index 85003c063b95..004d02e71f01 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -644,6 +644,7 @@ next:
 
 	}
 
+out:
 	if (!skb &&
 	    test_and_clear_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags)) {
 		int q;
@@ -657,7 +658,6 @@ next:
 		spin_unlock_irqrestore(&wl->wl_lock, flags);
 	}
 
-out:
 	return skb;
 }
 
-- 
cgit v1.2.3


From da7aa28004d3add74998f3416e70a6f9b3a95dd1 Mon Sep 17 00:00:00 2001
From: Luciano Coelho <coelho@ti.com>
Date: Tue, 12 Mar 2013 17:04:01 +0200
Subject: wlcore: use print_hex_dump_debug()

We were printing out all the hex dumps regardless of whether dynamic
debugging was enabled or not.  Now that print_hex_dump_debug() has
been implemented, we can use that instead.

Reported-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/debug.h | 33 ++++++++++++++++-----------------
 1 file changed, 16 insertions(+), 17 deletions(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/debug.h b/drivers/net/wireless/ti/wlcore/debug.h
index db4bf5a68ce2..0420bd45e4ee 100644
--- a/drivers/net/wireless/ti/wlcore/debug.h
+++ b/drivers/net/wireless/ti/wlcore/debug.h
@@ -89,25 +89,24 @@ extern u32 wl12xx_debug_level;
 	} while (0)
 #endif
 
-/* TODO: use pr_debug_hex_dump when it becomes available */
-#define wl1271_dump(level, prefix, buf, len)	\
-	do { \
-		if (level & wl12xx_debug_level) \
-			print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
-				       DUMP_PREFIX_OFFSET, 16, 1,	\
-				       buf,				\
-				       min_t(size_t, len, DEBUG_DUMP_LIMIT), \
-				       0);				\
+#define wl1271_dump(level, prefix, buf, len)				      \
+	do {								      \
+		if (level & wl12xx_debug_level)				      \
+			print_hex_dump_debug(DRIVER_PREFIX prefix,	      \
+					DUMP_PREFIX_OFFSET, 16, 1,	      \
+					buf,				      \
+					min_t(size_t, len, DEBUG_DUMP_LIMIT), \
+					0);				      \
 	} while (0)
 
-#define wl1271_dump_ascii(level, prefix, buf, len)	\
-	do { \
-		if (level & wl12xx_debug_level) \
-			print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
-				       DUMP_PREFIX_OFFSET, 16, 1,	\
-				       buf,				\
-				       min_t(size_t, len, DEBUG_DUMP_LIMIT), \
-				       true);				\
+#define wl1271_dump_ascii(level, prefix, buf, len)			      \
+	do {								      \
+		if (level & wl12xx_debug_level)				      \
+			print_hex_dump_debug(DRIVER_PREFIX prefix,	      \
+					DUMP_PREFIX_OFFSET, 16, 1,	      \
+					buf,				      \
+					min_t(size_t, len, DEBUG_DUMP_LIMIT), \
+					true);				      \
 	} while (0)
 
 #endif /* __DEBUG_H__ */
-- 
cgit v1.2.3


From 97236a0656034ef8512ded648cfaa3d7282534e8 Mon Sep 17 00:00:00 2001
From: Luciano Coelho <coelho@ti.com>
Date: Fri, 8 Mar 2013 09:41:53 +0200
Subject: wlcore: move handling from hardirq to the irq thread function

Spin locks and completions are expensive in hard IRQ context and cause
problems with RT kernels.  In RT kernels, both spin locks and
completions can schedule(), so we can't use them in hard irq context.

Move handling code into the irq thread function to avoid that.

Reported-by: Gregoire Gentil <gregoire@alwaysinnovating.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---
 drivers/net/wireless/ti/wlcore/main.c | 53 ++++++++++++++---------------------
 1 file changed, 21 insertions(+), 32 deletions(-)

(limited to 'drivers/net/wireless/ti')

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 248daa9bb5fe..c2730a79854a 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -651,6 +651,25 @@ static irqreturn_t wlcore_irq(int irq, void *cookie)
 	unsigned long flags;
 	struct wl1271 *wl = cookie;
 
+	/* complete the ELP completion */
+	spin_lock_irqsave(&wl->wl_lock, flags);
+	set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
+	if (wl->elp_compl) {
+		complete(wl->elp_compl);
+		wl->elp_compl = NULL;
+	}
+
+	if (test_bit(WL1271_FLAG_SUSPENDED, &wl->flags)) {
+		/* don't enqueue a work right now. mark it as pending */
+		set_bit(WL1271_FLAG_PENDING_WORK, &wl->flags);
+		wl1271_debug(DEBUG_IRQ, "should not enqueue work");
+		disable_irq_nosync(wl->irq);
+		pm_wakeup_event(wl->dev, 0);
+		spin_unlock_irqrestore(&wl->wl_lock, flags);
+		return IRQ_HANDLED;
+	}
+	spin_unlock_irqrestore(&wl->wl_lock, flags);
+
 	/* TX might be handled here, avoid redundant work */
 	set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
 	cancel_work_sync(&wl->tx_work);
@@ -5998,35 +6017,6 @@ int wlcore_free_hw(struct wl1271 *wl)
 }
 EXPORT_SYMBOL_GPL(wlcore_free_hw);
 
-static irqreturn_t wl12xx_hardirq(int irq, void *cookie)
-{
-	struct wl1271 *wl = cookie;
-	unsigned long flags;
-
-	wl1271_debug(DEBUG_IRQ, "IRQ");
-
-	/* complete the ELP completion */
-	spin_lock_irqsave(&wl->wl_lock, flags);
-	set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
-	if (wl->elp_compl) {
-		complete(wl->elp_compl);
-		wl->elp_compl = NULL;
-	}
-
-	if (test_bit(WL1271_FLAG_SUSPENDED, &wl->flags)) {
-		/* don't enqueue a work right now. mark it as pending */
-		set_bit(WL1271_FLAG_PENDING_WORK, &wl->flags);
-		wl1271_debug(DEBUG_IRQ, "should not enqueue work");
-		disable_irq_nosync(wl->irq);
-		pm_wakeup_event(wl->dev, 0);
-		spin_unlock_irqrestore(&wl->wl_lock, flags);
-		return IRQ_HANDLED;
-	}
-	spin_unlock_irqrestore(&wl->wl_lock, flags);
-
-	return IRQ_WAKE_THREAD;
-}
-
 static void wlcore_nvs_cb(const struct firmware *fw, void *context)
 {
 	struct wl1271 *wl = context;
@@ -6068,9 +6058,8 @@ static void wlcore_nvs_cb(const struct firmware *fw, void *context)
 	else
 		irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;
 
-	ret = request_threaded_irq(wl->irq, wl12xx_hardirq, wlcore_irq,
-				   irqflags,
-				   pdev->name, wl);
+	ret = request_threaded_irq(wl->irq, NULL, wlcore_irq,
+				   irqflags, pdev->name, wl);
 	if (ret < 0) {
 		wl1271_error("request_irq() failed: %d", ret);
 		goto out_free_nvs;
-- 
cgit v1.2.3