diff options
| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2013-08-18 13:47:01 +0200 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2013-08-19 09:39:04 +0200 |
| commit | 844d48746e4b281a933aedc0428048a1219b42f4 (patch) | |
| tree | d456114029573629bada5ee6882e89f18c42cb18 /net/xfrm | |
| parent | ipv6: xfrm: dereference inner ipv6 header if encapsulated (diff) | |
| download | linux-844d48746e4b281a933aedc0428048a1219b42f4.tar.xz linux-844d48746e4b281a933aedc0428048a1219b42f4.zip | |
xfrm: choose protocol family by skb protocol
We need to choose the protocol family by skb->protocol. Otherwise we
call the wrong xfrm{4,6}_local_error handler in case an ipv6 sockets is
used in ipv4 mode, in which case we should call down to xfrm4_local_error
(ip6 sockets are a superset of ip4 ones).
We are called before before ip_output functions, so skb->protocol is
not reset.
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_output.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c index 6f5fc612b162..3bb2cdc13b46 100644 --- a/net/xfrm/xfrm_output.c +++ b/net/xfrm/xfrm_output.c @@ -216,9 +216,17 @@ int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb) void xfrm_local_error(struct sk_buff *skb, int mtu) { + unsigned int proto; struct xfrm_state_afinfo *afinfo; - afinfo = xfrm_state_get_afinfo(skb->sk->sk_family); + if (skb->protocol == htons(ETH_P_IP)) + proto = AF_INET; + else if (skb->protocol == htons(ETH_P_IPV6)) + proto = AF_INET6; + else + return; + + afinfo = xfrm_state_get_afinfo(proto); if (!afinfo) return; |