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@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index f412ea1cef18bbf215ac6ae46d257b39a8a95c74..fbf890ebbeaec352f0e72238ad6ee1579b1c2744 100644 (file)
--- 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;
        }