[PATCH 7/9] xfrm: fix bogus WARN_ON with ipv6

[Steffen Klassert]

From: Florian Westphal <f...@strlen.de>

net/xfrm/xfrm_input.c:378:17: warning: this statement may fall through 
[-Wimplicit-fallthrough=]
skb->protocol = htons(ETH_P_IPV6);

... the fallthrough then causes a bogus WARN_ON().

Reported-by: Stephen Rothwell <s...@canb.auug.org.au>
Fixes: 4c203b0454b ("xfrm: remove eth_proto value from xfrm_state_afinfo")
Signed-off-by: Florian Westphal <f...@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klass...@secunet.com>
---
 net/xfrm/xfrm_input.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 8a00cc94c32c..6088bc2dc11e 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -376,6 +376,7 @@ static int xfrm_prepare_input(struct xfrm_state *x, struct 
sk_buff *skb)
                break;
        case AF_INET6:
                skb->protocol = htons(ETH_P_IPV6);
+               break;
        default:
                WARN_ON_ONCE(1);
                break;
-- 
2.17.1