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Message-Id: <1394428220-9955-1-git-send-email-roy.qing.li@gmail.com> Date: Mon, 10 Mar 2014 13:10:20 +0800 From: roy.qing.li@...il.com To: netdev@...r.kernel.org Subject: [PATCH net-next] ipv6: ip6_forward: perform skb->pkt_type check at the beginning From: Li RongQing <roy.qing.li@...il.com> Packets which have L2 address different from ours should be already filtered before entering into ip6_forward(). Perform that check at the beginning to avoid processing such packets. And use unlikely to optimise. Signed-off-by: Li RongQing <roy.qing.li@...il.com> --- net/ipv6/ip6_output.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 2bc1070..90dd551 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -367,6 +367,9 @@ int ip6_forward(struct sk_buff *skb) if (net->ipv6.devconf_all->forwarding == 0) goto error; + if (unlikely(skb->pkt_type != PACKET_HOST)) + goto drop; + if (skb_warn_if_lro(skb)) goto drop; @@ -376,9 +379,6 @@ int ip6_forward(struct sk_buff *skb) goto drop; } - if (skb->pkt_type != PACKET_HOST) - goto drop; - skb_forward_csum(skb); /* -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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