openvswitch: conntrack: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that in this particular case I placed a "fall through" comment on
its own line, which is what GCC is expecting to find.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index fe861e2f0deb..b27c5c6d9cab 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -752,6 +752,7 @@ static int ovs_ct_nat_execute(struct sk_buff *skb, struct nf_conn *ct,
                         }
                 }
                 /* Non-ICMP, fall thru to initialize if needed. */
+                /* fall through */
         case IP_CT_NEW:
                 /* Seen it before?  This can happen for loopback, retrans,
                  * or local packets.