Message ID | 1353092655.10798.44.camel@edumazet-glaptop |
---|---|
State | Accepted, archived |
Delegated to: | David Miller |
Headers | show |
From: Eric Dumazet <eric.dumazet@gmail.com> Date: Fri, 16 Nov 2012 11:04:15 -0800 > From: Tom Herbert <therbert@google.com> > > 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> Applied and queued up for -stable, thanks everyone. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/core/dev.c b/net/core/dev.c index bda6d00..c0946cb 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;