From: Linus Lüssing <linus.luessing@c0d3.blue>
Date: Fri, 11 Mar 2016 13:04:49 +0000 (+0100)
Subject: batman-adv: Fix broadcast/ogm queue limit on a removed interface
X-Git-Tag: v3.16.36~69
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e93055ed099bfe01a4668d58e2c6f8296857c792;p=thirdparty%2Fkernel%2Fstable.git

batman-adv: Fix broadcast/ogm queue limit on a removed interface

commit c4fdb6cff2aa0ae740c5f19b6f745cbbe786d42f upstream.

When removing a single interface while a broadcast or ogm packet is
still pending then we will free the forward packet without releasing the
queue slots again.

This patch is supposed to fix this issue.

Fixes: 6d5808d4ae1b ("batman-adv: Add missing hardif_free_ref in forw_packet_free")
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
[sven@narfation.org: fix conflicts with current version]
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 3d64ed20c3935..6004c2de7b2ae 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -611,6 +611,9 @@ batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
 
 		if (pending) {
 			hlist_del(&forw_packet->list);
+			if (!forw_packet->own)
+				atomic_inc(&bat_priv->bcast_queue_left);
+
 			batadv_forw_packet_free(forw_packet);
 		}
 	}
@@ -638,6 +641,9 @@ batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
 
 		if (pending) {
 			hlist_del(&forw_packet->list);
+			if (!forw_packet->own)
+				atomic_inc(&bat_priv->batman_queue_left);
+
 			batadv_forw_packet_free(forw_packet);
 		}
 	}