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Commit baefa31d authored by Tom Herbert's avatar Tom Herbert Committed by David S. Miller
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net-rps: Fix brokeness causing OOO packets 



In commit c445477d 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: default avatarTom Herbert <therbert@google.com>
Acked-by: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2a953883

net/core/dev.c

+3 −1
Original line number Diff line number Diff line
@@ -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;