This is a note to let you know that I've just added the patch titled
net: fix multiqueue selection
to the 3.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-fix-multiqueue-selection.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 81cad5a7f3d8ba936b5551baeed7cc21f8e41be2 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@xxxxxxxxxx>
Date: Sat, 7 Sep 2013 12:02:57 -0700
Subject: net: fix multiqueue selection
From: Eric Dumazet <edumazet@xxxxxxxxxx>
[ Upstream commit 50d1784ee4683f073c0362ee360bfae7a3333d6c ]
commit 416186fbf8c5b4e4465 ("net: Split core bits of netdev_pick_tx
into __netdev_pick_tx") added a bug that disables caching of queue
index in the socket.
This is the source of packet reorders for TCP flows, and
again this is happening more often when using FQ pacing.
Old code was doing
if (queue_index != old_index)
sk_tx_queue_set(sk, queue_index);
Alexander renamed the variables but forgot to change sk_tx_queue_set()
2nd parameter.
if (queue_index != new_index)
sk_tx_queue_set(sk, queue_index);
This means we store -1 over and over in sk->sk_tx_queue_mapping
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Alexander Duyck <alexander.h.duyck@xxxxxxxxx>
Acked-by: Alexander Duyck <alexander.h.duyck@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/core/flow_dissector.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -348,7 +348,7 @@ u16 __netdev_pick_tx(struct net_device *
if (queue_index != new_index && sk &&
rcu_access_pointer(sk->sk_dst_cache))
- sk_tx_queue_set(sk, queue_index);
+ sk_tx_queue_set(sk, new_index);
queue_index = new_index;
}
Patches currently in stable-queue which might be from edumazet@xxxxxxxxxx are
queue-3.11/net_sched-htb-fix-a-typo-in-htb_change_class.patch
queue-3.11/ipv6-gre-correct-calculation-of-max_headroom.patch
queue-3.11/net-fix-multiqueue-selection.patch
queue-3.11/ip_tunnel-do-not-use-stale-inner_iph-pointer.patch
queue-3.11/bridge-use-br_port_get_rtnl-within-rtnl-lock.patch
queue-3.11/bridge-fix-null-pointer-deref-of-br_port_get_rcu.patch
queue-3.11/net-flow_dissector-fix-thoff-for-ipproto_ah.patch
queue-3.11/net-net_secret-should-not-depend-on-tcp.patch
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