netdev - [PATCH net] netem: update backlog after drop

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Message-ID: <20131006151533.52988624@nehalam.linuxnetplumber.net>
Date:	Sun, 6 Oct 2013 15:15:33 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>
Cc:	netdev@...r.kernel.org
Subject: [PATCH net] netem: update backlog after drop

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>

---
Should be reviewed by Eric (he added the rb-tree stuff), and added to stable
as well.

--- a/net/sched/sch_netem.c	2013-10-06 15:06:50.675250833 -0700
+++ b/net/sched/sch_netem.c	2013-10-06 15:10:03.957219532 -0700
@@ -520,6 +520,7 @@ 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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