[MAC80211]: Add association LED trigger

Many devices have LEDs to indicate the link status.
Export this functionality to drivers.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 51 insertions, 16 deletions

diff --git a/net/mac80211/ieee80211_led.c b/net/mac80211/ieee80211_led.c
index 719d75b20707..4cf89af9d100 100644
--- a/net/mac80211/ieee80211_led.c
+++ b/net/mac80211/ieee80211_led.c
@@ -33,33 +33,58 @@ void ieee80211_led_tx(struct ieee80211_local *local, int q)
 		led_trigger_event(local->tx_led, LED_FULL);
 }
 
+void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
+{
+	if (unlikely(!local->assoc_led))
+		return;
+	if (associated)
+		led_trigger_event(local->assoc_led, LED_FULL);
+	else
+		led_trigger_event(local->assoc_led, LED_OFF);
+}
+
 void ieee80211_led_init(struct ieee80211_local *local)
 {
 	local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
-	if (!local->rx_led)
-		return;
-	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);
-		local->rx_led = NULL;
+	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);
+			local->rx_led = NULL;
+		}
 	}
 
 	local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
-	if (!local->tx_led)
-		return;
-	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);
-		local->tx_led = NULL;
+	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);
+			local->tx_led = NULL;
+		}
+	}
+
+	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);
+			local->assoc_led = NULL;
+		}
 	}
 }
 
 void ieee80211_led_exit(struct ieee80211_local *local)
 {
+	if (local->assoc_led) {
+		led_trigger_unregister(local->assoc_led);
+		kfree(local->assoc_led);
+	}
 	if (local->tx_led) {
 		led_trigger_unregister(local->tx_led);
 		kfree(local->tx_led);
@@ -70,6 +95,16 @@ void ieee80211_led_exit(struct ieee80211_local *local)
 	}
 }
 
+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;
+}
+EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
+
 char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);