From: Jan Engelhardt Date: Tue, 13 Apr 2010 13:32:16 +0000 (+0200) Subject: netfilter: ipv6: add IPSKB_REROUTED exclusion to NF_HOOK/POSTROUTING invocation X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9c6eb28aca52d562f3ffbaebaa56385df9972a43;p=linux-beck.git netfilter: ipv6: add IPSKB_REROUTED exclusion to NF_HOOK/POSTROUTING invocation Similar to how IPv4's ip_output.c works, have ip6_output also check the IPSKB_REROUTED flag. It will be set from xt_TEE for cloned packets since Xtables can currently only deal with a single packet in flight at a time. Signed-off-by: Jan Engelhardt Acked-by: David S. Miller [Patrick: changed to use an IP6SKB value instead of IPSKB] Signed-off-by: Patrick McHardy --- diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index e0cc9a7db2b5..7bdf6ffe2b49 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -250,6 +250,7 @@ struct inet6_skb_parm { #define IP6SKB_XFRM_TRANSFORMED 1 #define IP6SKB_FORWARDED 2 +#define IP6SKB_REROUTED 4 }; #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb)) diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 236ac7813744..c10a38a71a5e 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -172,8 +172,9 @@ int ip6_output(struct sk_buff *skb) return 0; } - return NF_HOOK(NFPROTO_IPV6, NF_INET_POST_ROUTING, skb, NULL, dev, - ip6_finish_output); + return NF_HOOK_COND(NFPROTO_IPV6, NF_INET_POST_ROUTING, skb, NULL, dev, + ip6_finish_output, + !(IP6CB(skb)->flags & IP6SKB_REROUTED)); } /*