From: stephen hemminger <stephen@networkplumber.org>
Date: Sun, 6 Oct 2013 22:15:33 +0000 (-0700)
Subject: netem: update backlog after drop
X-Git-Tag: v3.11.7~41
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=598b990bb1f1f6026dc35e7d6ca69e4cf30e52f4;p=thirdparty%2Fkernel%2Fstable.git

netem: update backlog after drop

[ Upstream commit 638a52b801e40ed276ceb69b73579ad99365361a ]

When packet is dropped from rb-tree netem the backlog statistic should
also be updated.

Reported-by: Сергеев Сергей <adron@yapic.net>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 82f6016d89aba..7dc79940f2401 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -523,6 +523,7 @@ static unsigned int netem_drop(struct Qdisc *sch)
 			skb->next = NULL;
 			skb->prev = NULL;
 			len = qdisc_pkt_len(skb);
+			sch->qstats.backlog -= len;
 			kfree_skb(skb);
 		}
 	}