From 4644ae89033872a62b4fea6ca96b958e115efdc0 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 28 Mar 2012 11:04:28 +0200
Subject: [PATCH] mac80211: lazily stop queues in add_pending
When adding pending SKBs there's no need to
stop all queues, we only need to stop those
that we're adding frames to. Implement that
by lazily stopping a queue as we add an SKB.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
net/mac80211/util.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index ef725cabb099..471a831066dd 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -385,10 +385,6 @@ void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
int queue, i;
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
- for (i = 0; i < hw->queues; i++)
- __ieee80211_stop_queue(hw, i,
- IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
-
while ((skb = skb_dequeue(skbs))) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -398,6 +394,10 @@ void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
}
queue = skb_get_queue_mapping(skb);
+
+ __ieee80211_stop_queue(hw, queue,
+ IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
+
__skb_queue_tail(&local->pending[queue], skb);
}