summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorTom Herbert <therbert@google.com>2012-11-16 10:04:15 +0100
committerDavid S. Miller <davem@davemloft.net>2012-11-16 20:35:56 +0100
commitbaefa31db2f2b13a05d1b81bdf2d20d487f58b0a (patch)
treea770f25f3af37b3124dfcac835c79eea6801a64d
parentMerge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge (diff)
downloadlinux-baefa31db2f2b13a05d1b81bdf2d20d487f58b0a.tar.xz
linux-baefa31db2f2b13a05d1b81bdf2d20d487f58b0a.zip
net-rps: Fix brokeness causing OOO packets
In commit c445477d74ab3779 which adds aRFS to the kernel, the CPU selected for RFS is not set correctly when CPU is changing. This is causing OOO packets and probably other issues. Signed-off-by: Tom Herbert <therbert@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Acked-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/dev.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index bda6d004f9f0..c0946cb2b354 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2818,8 +2818,10 @@ static int get_rps_cpu(struct net_device *dev, struct sk_buff *skb,
if (unlikely(tcpu != next_cpu) &&
(tcpu == RPS_NO_CPU || !cpu_online(tcpu) ||
((int)(per_cpu(softnet_data, tcpu).input_queue_head -
- rflow->last_qtail)) >= 0))
+ rflow->last_qtail)) >= 0)) {
+ tcpu = next_cpu;
rflow = set_rps_cpu(dev, skb, rflow, next_cpu);
+ }
if (tcpu != RPS_NO_CPU && cpu_online(tcpu)) {
*rflowp = rflow;