mac80211: add throughput based LED blink trigger

iwlwifi and other drivers like to blink their LED
based on throughput. Implement this generically in
mac80211, based on a throughput table the driver
specifies. That way, drivers can set the blink
frequencies depending on their desired behaviour
and max throughput.

All the drivers need to do is provide an LED class
device, best with blink hardware offload.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index eadaa243a3da..523b90be8dc5 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -23,6 +23,7 @@
 #include <linux/types.h>
 #include <linux/spinlock.h>
 #include <linux/etherdevice.h>
+#include <linux/leds.h>
 #include <net/ieee80211_radiotap.h>
 #include <net/cfg80211.h>
 #include <net/mac80211.h>
@@ -630,6 +631,17 @@ enum queue_stop_reason {
         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 };
 
+struct tpt_led_trigger {
+        struct led_trigger trig;
+        char name[32];
+        const struct ieee80211_tpt_blink *blink_table;
+        unsigned int blink_table_len;
+        struct timer_list timer;
+        bool running;
+        unsigned long prev_traffic;
+        unsigned long tx_bytes, rx_bytes;
+};
+
 /**
  * mac80211 scan flags - currently active scan mode
  *
@@ -838,6 +850,7 @@ struct ieee80211_local {
 #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],
              assoc_led_name[32], radio_led_name[32];
 #endif