Merge branch 'master' into next

Conflicts:
	security/smack/smack_lsm.c

Verified and added fix by Stephen Rothwell <sfr@canb.auug.org.au>
Ok'd by Casey Schaufler <casey@schaufler-ca.com>

Signed-off-by: James Morris <jmorris@namei.org>

1 files changed, 166 insertions, 20 deletions

diff --git a/net/mac80211/led.c b/net/mac80211/led.c
index 063aad94424..14590332c81 100644
--- a/net/mac80211/led.c
+++ b/net/mac80211/led.c
@@ -54,12 +54,22 @@ void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
 		led_trigger_event(local->radio_led, LED_OFF);
 }
 
+void ieee80211_led_names(struct ieee80211_local *local)
+{
+	snprintf(local->rx_led_name, sizeof(local->rx_led_name),
+		 "%srx", wiphy_name(local->hw.wiphy));
+	snprintf(local->tx_led_name, sizeof(local->tx_led_name),
+		 "%stx", wiphy_name(local->hw.wiphy));
+	snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
+		 "%sassoc", wiphy_name(local->hw.wiphy));
+	snprintf(local->radio_led_name, sizeof(local->radio_led_name),
+		 "%sradio", wiphy_name(local->hw.wiphy));
+}
+
 void ieee80211_led_init(struct ieee80211_local *local)
 {
 	local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
 	if (local->rx_led) {
-		snprintf(local->rx_led_name, sizeof(local->rx_led_name),
-			 "%srx", wiphy_name(local->hw.wiphy));
 		local->rx_led->name = local->rx_led_name;
 		if (led_trigger_register(local->rx_led)) {
 			kfree(local->rx_led);
@@ -69,8 +79,6 @@ void ieee80211_led_init(struct ieee80211_local *local)
 
 	local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
 	if (local->tx_led) {
-		snprintf(local->tx_led_name, sizeof(local->tx_led_name),
-			 "%stx", wiphy_name(local->hw.wiphy));
 		local->tx_led->name = local->tx_led_name;
 		if (led_trigger_register(local->tx_led)) {
 			kfree(local->tx_led);
@@ -80,8 +88,6 @@ void ieee80211_led_init(struct ieee80211_local *local)
 
 	local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
 	if (local->assoc_led) {
-		snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
-			 "%sassoc", wiphy_name(local->hw.wiphy));
 		local->assoc_led->name = local->assoc_led_name;
 		if (led_trigger_register(local->assoc_led)) {
 			kfree(local->assoc_led);
@@ -91,14 +97,19 @@ void ieee80211_led_init(struct ieee80211_local *local)
 
 	local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
 	if (local->radio_led) {
-		snprintf(local->radio_led_name, sizeof(local->radio_led_name),
-			 "%sradio", wiphy_name(local->hw.wiphy));
 		local->radio_led->name = local->radio_led_name;
 		if (led_trigger_register(local->radio_led)) {
 			kfree(local->radio_led);
 			local->radio_led = NULL;
 		}
 	}
+
+	if (local->tpt_led_trigger) {
+		if (led_trigger_register(&local->tpt_led_trigger->trig)) {
+			kfree(local->tpt_led_trigger);
+			local->tpt_led_trigger = NULL;
+		}
+	}
 }
 
 void ieee80211_led_exit(struct ieee80211_local *local)
@@ -119,15 +130,18 @@ void ieee80211_led_exit(struct ieee80211_local *local)
 		led_trigger_unregister(local->rx_led);
 		kfree(local->rx_led);
 	}
+
+	if (local->tpt_led_trigger) {
+		led_trigger_unregister(&local->tpt_led_trigger->trig);
+		kfree(local->tpt_led_trigger);
+	}
 }
 
 char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 
-	if (local->radio_led)
-		return local->radio_led_name;
-	return NULL;
+	return local->radio_led_name;
 }
 EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
 
@@ -135,9 +149,7 @@ char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 
-	if (local->assoc_led)
-		return local->assoc_led_name;
-	return NULL;
+	return local->assoc_led_name;
 }
 EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
 
@@ -145,9 +157,7 @@ char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 
-	if (local->tx_led)
-		return local->tx_led_name;
-	return NULL;
+	return local->tx_led_name;
 }
 EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
 
@@ -155,8 +165,144 @@ char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 
-	if (local->rx_led)
-		return local->rx_led_name;
-	return NULL;
+	return local->rx_led_name;
 }
 EXPORT_SYMBOL(__ieee80211_get_rx_led_name);
+
+static unsigned long tpt_trig_traffic(struct ieee80211_local *local,
+				      struct tpt_led_trigger *tpt_trig)
+{
+	unsigned long traffic, delta;
+
+	traffic = tpt_trig->tx_bytes + tpt_trig->rx_bytes;
+
+	delta = traffic - tpt_trig->prev_traffic;
+	tpt_trig->prev_traffic = traffic;
+	return DIV_ROUND_UP(delta, 1024 / 8);
+}
+
+static void tpt_trig_timer(unsigned long data)
+{
+	struct ieee80211_local *local = (void *)data;
+	struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger;
+	struct led_classdev *led_cdev;
+	unsigned long on, off, tpt;
+	int i;
+
+	if (!tpt_trig->running)
+		return;
+
+	mod_timer(&tpt_trig->timer, round_jiffies(jiffies + HZ));
+
+	tpt = tpt_trig_traffic(local, tpt_trig);
+
+	/* default to just solid on */
+	on = 1;
+	off = 0;
+
+	for (i = tpt_trig->blink_table_len - 1; i >= 0; i--) {
+		if (tpt_trig->blink_table[i].throughput < 0 ||
+		    tpt > tpt_trig->blink_table[i].throughput) {
+			off = tpt_trig->blink_table[i].blink_time / 2;
+			on = tpt_trig->blink_table[i].blink_time - off;
+			break;
+		}
+	}
+
+	read_lock(&tpt_trig->trig.leddev_list_lock);
+	list_for_each_entry(led_cdev, &tpt_trig->trig.led_cdevs, trig_list)
+		led_blink_set(led_cdev, &on, &off);
+	read_unlock(&tpt_trig->trig.leddev_list_lock);
+}
+
+char *__ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw,
+				unsigned int flags,
+				const struct ieee80211_tpt_blink *blink_table,
+				unsigned int blink_table_len)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct tpt_led_trigger *tpt_trig;
+
+	if (WARN_ON(local->tpt_led_trigger))
+		return NULL;
+
+	tpt_trig = kzalloc(sizeof(struct tpt_led_trigger), GFP_KERNEL);
+	if (!tpt_trig)
+		return NULL;
+
+	snprintf(tpt_trig->name, sizeof(tpt_trig->name),
+		 "%stpt", wiphy_name(local->hw.wiphy));
+
+	tpt_trig->trig.name = tpt_trig->name;
+
+	tpt_trig->blink_table = blink_table;
+	tpt_trig->blink_table_len = blink_table_len;
+	tpt_trig->want = flags;
+
+	setup_timer(&tpt_trig->timer, tpt_trig_timer, (unsigned long)local);
+
+	local->tpt_led_trigger = tpt_trig;
+
+	return tpt_trig->name;
+}
+EXPORT_SYMBOL(__ieee80211_create_tpt_led_trigger);
+
+static void ieee80211_start_tpt_led_trig(struct ieee80211_local *local)
+{
+	struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger;
+
+	if (tpt_trig->running)
+		return;
+
+	/* reset traffic */
+	tpt_trig_traffic(local, tpt_trig);
+	tpt_trig->running = true;
+
+	tpt_trig_timer((unsigned long)local);
+	mod_timer(&tpt_trig->timer, round_jiffies(jiffies + HZ));
+}
+
+static void ieee80211_stop_tpt_led_trig(struct ieee80211_local *local)
+{
+	struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger;
+	struct led_classdev *led_cdev;
+
+	if (!tpt_trig->running)
+		return;
+
+	tpt_trig->running = false;
+	del_timer_sync(&tpt_trig->timer);
+
+	read_lock(&tpt_trig->trig.leddev_list_lock);
+	list_for_each_entry(led_cdev, &tpt_trig->trig.led_cdevs, trig_list)
+		led_brightness_set(led_cdev, LED_OFF);
+	read_unlock(&tpt_trig->trig.leddev_list_lock);
+}
+
+void ieee80211_mod_tpt_led_trig(struct ieee80211_local *local,
+				unsigned int types_on, unsigned int types_off)
+{
+	struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger;
+	bool allowed;
+
+	WARN_ON(types_on & types_off);
+
+	if (!tpt_trig)
+		return;
+
+	tpt_trig->active &= ~types_off;
+	tpt_trig->active |= types_on;
+
+	/*
+	 * Regardless of wanted state, we shouldn't blink when
+	 * the radio is disabled -- this can happen due to some
+	 * code ordering issues with __ieee80211_recalc_idle()
+	 * being called before the radio is started.
+	 */
+	allowed = tpt_trig->active & IEEE80211_TPT_LEDTRIG_FL_RADIO;
+
+	if (!allowed || !(tpt_trig->active & tpt_trig->want))
+		ieee80211_stop_tpt_led_trig(local);
+	else
+		ieee80211_start_tpt_led_trig(local);
+}