1 files changed, 8 insertions, 1 deletions

diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index 28fc8edfdc3a..80ef2a1d39fd 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -411,8 +411,15 @@ static int ipcomp6_init_state(struct xfrm_state *x)
                 goto out;
 
         x->props.header_len = 0;
-        if (x->props.mode == XFRM_MODE_TUNNEL)
+        switch (x->props.mode) {
+        case XFRM_MODE_BEET:
+        case XFRM_MODE_TRANSPORT:
+                break;
+        case XFRM_MODE_TUNNEL:
                 x->props.header_len += sizeof(struct ipv6hdr);
+        default:
+                goto error;
+        }
 
         mutex_lock(&ipcomp6_resource_mutex);
         if (!ipcomp6_alloc_scratches())