[IPSEC]: changing API of xfrm6_tunnel_register

This patch changes xfrm6_tunnel register and deregister
interface to prepare for solving the conflict of device
tunnels with inter address family IPsec tunnel.
There is no device which conflicts with IPv4 over IPv6
IPsec tunnel.

Signed-off-by: Kazunori MIYAZAWA <miyazawa@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c
index 25250147bdc3..31f651f95096 100644
--- a/net/ipv6/xfrm6_input.c
+++ b/net/ipv6/xfrm6_input.c
@@ -40,7 +40,8 @@ int xfrm6_rcv_spi(struct sk_buff *skb, __be32 spi)
                 if (xfrm_nr == XFRM_MAX_DEPTH)
                         goto drop;
 
-                x = xfrm_state_lookup((xfrm_address_t *)&iph->daddr, spi, nexthdr, AF_INET6);
+                x = xfrm_state_lookup((xfrm_address_t *)&iph->daddr, spi,
+                                nexthdr != IPPROTO_IPIP ? nexthdr : IPPROTO_IPV6, AF_INET6);
                 if (x == NULL)
                         goto drop;
                 spin_lock(&x->lock);