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| author | Tobias Brunner <tobias@strongswan.org> | 2017-12-21 17:32:24 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-26 17:14:56 -0500 |
| commit | 09ee9dba9611cd382fd360a99ad1c2fa23bfdca8 (patch) | |
| tree | 3c9b69538cebcb5945e61633378069e85b8d221b | |
| parent | 18feb87105c3c16dc01e6981a6aafb175679b997 (diff) | |
| download | linux-09ee9dba9611cd382fd360a99ad1c2fa23bfdca8.tar.gz linux-09ee9dba9611cd382fd360a99ad1c2fa23bfdca8.tar.bz2 linux-09ee9dba9611cd382fd360a99ad1c2fa23bfdca8.zip | |
ipv6: Reinject IPv6 packets if IPsec policy matches after SNAT
If SNAT modifies the source address the resulting packet might match
an IPsec policy, reinject the packet if that's the case.
The exact same thing is already done for IPv4.
Signed-off-by: Tobias Brunner <tobias@strongswan.org>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/ip6_output.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index ece2781a31b2..bcdb615aed6e 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -138,6 +138,14 @@ static int ip6_finish_output(struct net *net, struct sock *sk, struct sk_buff *s return ret; } +#if defined(CONFIG_NETFILTER) && defined(CONFIG_XFRM) + /* Policy lookup after SNAT yielded a new policy */ + if (skb_dst(skb)->xfrm) { + IPCB(skb)->flags |= IPSKB_REROUTED; + return dst_output(net, sk, skb); + } +#endif + if ((skb->len > ip6_skb_dst_mtu(skb) && !skb_is_gso(skb)) || dst_allfrag(skb_dst(skb)) || (IP6CB(skb)->frag_max_size && skb->len > IP6CB(skb)->frag_max_size)) |