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, 3 insertions, 0 deletions

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index d2b4b67a7b53..68c2fbd16ebb 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1297,6 +1297,7 @@ static int __ieee80211_tx(struct ieee80211_local *local,
 
         while (skb) {
                 int q = skb_get_queue_mapping(skb);
+                __le16 fc;
 
                 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
                 ret = IEEE80211_TX_OK;
@@ -1339,6 +1340,7 @@ static int __ieee80211_tx(struct ieee80211_local *local,
                 else
                         info->control.sta = NULL;
 
+                fc = ((struct ieee80211_hdr *)skb->data)->frame_control;
                 ret = drv_tx(local, skb);
                 if (WARN_ON(ret != NETDEV_TX_OK && skb->len != len)) {
                         dev_kfree_skb(skb);
@@ -1349,6 +1351,7 @@ static int __ieee80211_tx(struct ieee80211_local *local,
                         return IEEE80211_TX_AGAIN;
                 }
 
+                ieee80211_tpt_led_trig_tx(local, fc, len);
                 *skbp = skb = next;
                 ieee80211_led_tx(local, 1);
                 fragm = true;