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

[Greg Kroah-Hartman]

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

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

From: stephen hemminger <stephen@xxxxxxxxxxxxxxxxxx>

[ Upstream commit 638a52b801e40ed276ceb69b73579ad99365361a ]

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

Reported-by: ÐÐÑÐÐÐÐ ÐÐÑÐÐÐ <adron@xxxxxxxxx>
Signed-off-by: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
Acked-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 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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