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bpf, skb_do_redirect: clear sender_cpu before xmit

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Similar to commit c29390c6df ("xps: must clear sender_cpu before
forwarding"), we also need to clear the skb->sender_cpu when moving
from RX to TX via skb_do_redirect() due to the shared location of
napi_id (used on RX) and sender_cpu (used on TX).

Fixes: 27b29f6305 ("bpf: add bpf_redirect() helper")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann 2015-10-07 10:16:09 +02:00 • committed by David S. Miller
parent dfdd7230c5
commit cfc81b5038
1 changed files with 1 additions and 0 deletions
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net/core/filter.c
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@ -1462,6 +1462,7 @@ int skb_do_redirect(struct sk_buff *skb)
return dev_forward_skb(dev, skb);
skb->dev = dev;
skb_sender_cpu_clear(skb);
return dev_queue_xmit(skb);
}