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authorTom Herbert <therbert@google.com>2012-11-16 09:04:15 +0000
committerDavid S. Miller <davem@davemloft.net>2012-11-16 14:35:56 -0500
commitbaefa31db2f2b13a05d1b81bdf2d20d487f58b0a (patch)
treea770f25f3af37b3124dfcac835c79eea6801a64d
parent2a95388353b74a70b9c43c55a781faa92e1a14f1 (diff)
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;