mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-21 05:33:21 +02:00
8f76f46fa3
commit 8efa88540635 (sch_sfq: avoid giving spurious NET_XMIT_CN signals) forgot to call qdisc_tree_decrease_qlen() to signal upper levels that a packet (from another flow) was dropped, leading to various problems. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29642 3c298f89-4303-0410-b956-a3cf2f4a3e73
42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
From: Eric Dumazet <eric.dumazet@gmail.com>
|
|
Date: Fri, 29 Jul 2011 19:22:42 +0000 (+0000)
|
|
Subject: sch_sfq: fix sfq_enqueue()
|
|
X-Git-Tag: v3.1-rc1~24^2~29
|
|
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=e1738bd9cecc5c867b0e2996470c1ff20f66ba79
|
|
|
|
sch_sfq: fix sfq_enqueue()
|
|
|
|
commit 8efa88540635 (sch_sfq: avoid giving spurious NET_XMIT_CN signals)
|
|
forgot to call qdisc_tree_decrease_qlen() to signal upper levels that a
|
|
packet (from another flow) was dropped, leading to various problems.
|
|
|
|
With help from Michal Soltys and Michal Pokrywka, who did a bisection.
|
|
|
|
Bugzilla ref: https://bugzilla.kernel.org/show_bug.cgi?id=39372
|
|
Debian ref: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631945
|
|
|
|
Reported-by: Lucas Bocchi <lucas.bocchi@gmail.com>
|
|
Reported-and-bisected-by: Michal Pokrywka <wolfmoon@o2.pl>
|
|
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
|
|
CC: Michal Soltys <soltys@ziu.info>
|
|
Acked-by: Patrick McHardy <kaber@trash.net>
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
---
|
|
|
|
--- a/net/sched/sch_sfq.c
|
|
+++ b/net/sched/sch_sfq.c
|
|
@@ -410,7 +410,12 @@ sfq_enqueue(struct sk_buff *skb, struct
|
|
/* Return Congestion Notification only if we dropped a packet
|
|
* from this flow.
|
|
*/
|
|
- return (qlen != slot->qlen) ? NET_XMIT_CN : NET_XMIT_SUCCESS;
|
|
+ if (qlen != slot->qlen)
|
|
+ return NET_XMIT_CN;
|
|
+
|
|
+ /* As we dropped a packet, better let upper stack know this */
|
|
+ qdisc_tree_decrease_qlen(sch, 1);
|
|
+ return NET_XMIT_SUCCESS;
|
|
}
|
|
|
|
static struct sk_buff *
|