From cfc81b50387086c3a1ca6d2be3c46561edfbc3b5 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Wed, 7 Oct 2015 10:16:09 +0200 Subject: [PATCH] bpf, skb_do_redirect: clear sender_cpu before xmit Similar to commit c29390c6dfee ("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: 27b29f63058d ("bpf: add bpf_redirect() helper") Signed-off-by: Daniel Borkmann Acked-by: Alexei Starovoitov Signed-off-by: David S. Miller --- net/core/filter.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/core/filter.c b/net/core/filter.c index da3e5357f138..8f4603c712cd 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -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); } -- 2.20.1