[IPSEC]: Fix inter address family IPsec tunnel handling.

Signed-off-by: Kazunori MIYAZAWA <kazunori@miyazawa.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 1 deletions

diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 569d377932c4..2519129c6d21 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -124,7 +124,7 @@ int xfrm_output_resume(struct sk_buff *skb, int err)
                 if (!x)
                         return dst_output(skb);
 
-                err = nf_hook(x->inner_mode->afinfo->family,
+                err = nf_hook(skb->dst->ops->family,
                               NF_INET_POST_ROUTING, skb,
                               NULL, skb->dst->dev, xfrm_output2);
                 if (unlikely(err != 1))
@@ -193,4 +193,20 @@ int xfrm_output(struct sk_buff *skb)
 
         return xfrm_output2(skb);
 }
+
+int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb)
+{
+        struct xfrm_mode *inner_mode;
+        if (x->sel.family == AF_UNSPEC)
+                inner_mode = xfrm_ip2inner_mode(x,
+                                xfrm_af2proto(skb->dst->ops->family));
+        else
+                inner_mode = x->inner_mode;
+
+        if (inner_mode == NULL)
+                return -EAFNOSUPPORT;
+        return inner_mode->afinfo->extract_output(x, skb);
+}
+
 EXPORT_SYMBOL_GPL(xfrm_output);
+EXPORT_SYMBOL_GPL(xfrm_inner_extract_output);