[ 3.5.yuz extended stable ] Patch "mac80211: use ieee80211_free_txskb in a few more places" has been added to staging queue

[Herton Ronaldo Krzesinski]

This is a note to let you know that I have just added a patch titled

    mac80211: use ieee80211_free_txskb in a few more places

to the linux-3.5.y-queue branch of the 3.5.yuz extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.yuz tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Herton

------

>From b2d846490d8887bc52631cb94d15522c0a209d76 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd at openwrt.org>
Date: Wed, 10 Oct 2012 22:40:23 +0200
Subject: [PATCH] mac80211: use ieee80211_free_txskb in a few more places

commit d4fa14cd62bd078c8e3ef39283b9f237e5b2ff0f upstream.

Free tx status skbs when draining power save buffers, pending frames, or
when tearing down a vif.
Fixes remaining conditions that can lead to hostapd/wpa_supplicant hangs when
running out of socket write memory.

Signed-off-by: Felix Fietkau <nbd at openwrt.org>
Signed-off-by: John W. Linville <linville at tuxdriver.com>
[ herton: adjust context ]
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
---
 net/mac80211/iface.c    |    2 +-
 net/mac80211/sta_info.c |    4 ++--
 net/mac80211/util.c     |    4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 8664111..4b4d9c5 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -711,7 +711,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 			struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 			if (info->control.vif == &sdata->vif) {
 				__skb_unlink(skb, &local->pending[i]);
-				dev_kfree_skb_irq(skb);
+				ieee80211_free_txskb(&local->hw, skb);
 			}
 		}
 	}
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index de455f8..277bd96 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -591,7 +591,7 @@ static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local,
 		 */
 		if (!skb)
 			break;
-		dev_kfree_skb(skb);
+		ieee80211_free_txskb(&local->hw, skb);
 	}

 	/*
@@ -622,7 +622,7 @@ static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local,
 		printk(KERN_DEBUG "Buffered frame expired (STA %pM)\n",
 		       sta->sta.addr);
 #endif
-		dev_kfree_skb(skb);
+		ieee80211_free_txskb(&local->hw, skb);
 	}

 	/*
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index f564b5e..92d84f5 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -400,7 +400,7 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
 	int queue = info->hw_queue;

 	if (WARN_ON(!info->control.vif)) {
-		kfree_skb(skb);
+		ieee80211_free_txskb(&local->hw, skb);
 		return;
 	}

@@ -425,7 +425,7 @@ void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
 		struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);

 		if (WARN_ON(!info->control.vif)) {
-			kfree_skb(skb);
+			ieee80211_free_txskb(&local->hw, skb);
 			continue;
 		}

--
1.7.9.5