linux-kernel - [PATCH 3.11 26/66] netem: update backlog after drop

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Message-Id: <20131101220642.010268933@linuxfoundation.org>
Date:	Fri,  1 Nov 2013 15:07:02 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Сергеев Сергей 
	<adron@...ic.net>, Stephen Hemminger <stephen@...workplumber.org>,
	Eric Dumazet <edumazet@...gle.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.11 26/66] netem: update backlog after drop

3.11-stable review patch.  If anyone has any objections, please let me know.

------------------

From: stephen hemminger <stephen@...workplumber.org>

[ Upstream commit 638a52b801e40ed276ceb69b73579ad99365361a ]

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

Reported-by: Сергеев Сергей <adron@...ic.net>
Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
Acked-by: Eric Dumazet <edumazet@...gle.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/sched/sch_netem.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -523,6 +523,7 @@ static unsigned int netem_drop(struct Qd
 			skb->next = NULL;
 			skb->prev = NULL;
 			len = qdisc_pkt_len(skb);
+			sch->qstats.backlog -= len;
 			kfree_skb(skb);
 		}
 	}


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