linux-kernel - [PATCH] openvswitch: conntrack: mark expected switch fall-through

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Date:   Thu, 19 Oct 2017 12:55:03 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Pravin Shelar <pshelar@...ira.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, dev@...nvswitch.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] 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@...eddedor.com>
---
 net/openvswitch/conntrack.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index fe861e2..b27c5c6 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.
-- 
2.7.4