linux-kernel - [PATCH net-next] veth: Mark expected switch fall-throughs

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Message-ID: <20190208183733.GA12393@embeddedor>
Date:   Fri, 8 Feb 2019 12:37:33 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH net-next] veth: Mark expected switch fall-throughs

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

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
 drivers/net/veth.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index f412ea1cef18..fbf890ebbeae 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -540,8 +540,10 @@ static struct sk_buff *veth_xdp_rcv_one(struct veth_rq *rq,
 			goto xdp_xmit;
 		default:
 			bpf_warn_invalid_xdp_action(act);
+			/* fall through */
 		case XDP_ABORTED:
 			trace_xdp_exception(rq->dev, xdp_prog, act);
+			/* fall through */
 		case XDP_DROP:
 			goto err_xdp;
 		}
@@ -661,8 +663,10 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq, struct sk_buff *skb,
 		goto xdp_xmit;
 	default:
 		bpf_warn_invalid_xdp_action(act);
+		/* fall through */
 	case XDP_ABORTED:
 		trace_xdp_exception(rq->dev, xdp_prog, act);
+		/* fall through */
 	case XDP_DROP:
 		goto drop;
 	}
-- 
2.20.1