mac80211: use oneshot blink API for LED triggers

Change mac80211 LED trigger code to use the generic
led_trigger_blink_oneshot() API for transmit and receive activity
indication.

This gives a better feedback to the user, as with the new API each
activity event results in a visible blink, while a constant traffic
results in a continuous blink at constant rate.

Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
[fix LED disabled build error]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

5 files changed, 10 insertions, 17 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 3d32df1fbc6d..d779383c52d2 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1094,7 +1094,6 @@ struct ieee80211_local {
         u32 dot11TransmittedFrameCount;
 
 #ifdef CONFIG_MAC80211_LEDS
-        int tx_led_counter, rx_led_counter;
         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
         struct tpt_led_trigger *tpt_led_trigger;
         char tx_led_name[32], rx_led_name[32],
diff --git a/net/mac80211/led.c b/net/mac80211/led.c
index bcffa6903129..e2b836446af3 100644
--- a/net/mac80211/led.c
+++ b/net/mac80211/led.c
@@ -12,27 +12,22 @@
 #include <linux/export.h>
 #include "led.h"
 
+#define MAC80211_BLINK_DELAY 50 /* ms */
+
 void ieee80211_led_rx(struct ieee80211_local *local)
 {
+        unsigned long led_delay = MAC80211_BLINK_DELAY;
         if (unlikely(!local->rx_led))
                 return;
-        if (local->rx_led_counter++ % 2 == 0)
-                led_trigger_event(local->rx_led, LED_OFF);
-        else
-                led_trigger_event(local->rx_led, LED_FULL);
+        led_trigger_blink_oneshot(local->rx_led, &led_delay, &led_delay, 0);
 }
 
-/* q is 1 if a packet was enqueued, 0 if it has been transmitted */
-void ieee80211_led_tx(struct ieee80211_local *local, int q)
+void ieee80211_led_tx(struct ieee80211_local *local)
 {
+        unsigned long led_delay = MAC80211_BLINK_DELAY;
         if (unlikely(!local->tx_led))
                 return;
-        /* not sure how this is supposed to work ... */
-        local->tx_led_counter += 2*q-1;
-        if (local->tx_led_counter % 2 == 0)
-                led_trigger_event(local->tx_led, LED_OFF);
-        else
-                led_trigger_event(local->tx_led, LED_FULL);
+        led_trigger_blink_oneshot(local->tx_led, &led_delay, &led_delay, 0);
 }
 
 void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
diff --git a/net/mac80211/led.h b/net/mac80211/led.h
index e0275d9befa8..89f4344f13b9 100644
--- a/net/mac80211/led.h
+++ b/net/mac80211/led.h
@@ -13,7 +13,7 @@
 
 #ifdef CONFIG_MAC80211_LEDS
 void ieee80211_led_rx(struct ieee80211_local *local);
-void ieee80211_led_tx(struct ieee80211_local *local, int q);
+void ieee80211_led_tx(struct ieee80211_local *local);
 void ieee80211_led_assoc(struct ieee80211_local *local,
                          bool associated);
 void ieee80211_led_radio(struct ieee80211_local *local,
@@ -27,7 +27,7 @@ void ieee80211_mod_tpt_led_trig(struct ieee80211_local *local,
 static inline void ieee80211_led_rx(struct ieee80211_local *local)
 {
 }
-static inline void ieee80211_led_tx(struct ieee80211_local *local, int q)
+static inline void ieee80211_led_tx(struct ieee80211_local *local)
 {
 }
 static inline void ieee80211_led_assoc(struct ieee80211_local *local,
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 6ad4c14385ef..8eabfd96ca36 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -564,7 +564,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 
         rcu_read_unlock();
 
-        ieee80211_led_tx(local, 0);
+        ieee80211_led_tx(local);
 
         /* SNMP counters
          * Fragments are passed to low-level drivers as separate skbs, so these
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index be4d3caf4879..f65873f0c89f 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1300,7 +1300,6 @@ static bool __ieee80211_tx(struct ieee80211_local *local,
                                     txpending);
 
         ieee80211_tpt_led_trig_tx(local, fc, led_len);
-        ieee80211_led_tx(local, 1);
 
         WARN_ON_ONCE(!skb_queue_empty(skbs));