Re: [PATCH] net: l2tp: mark expected switch fall-through

From: Guillaume Nault
Date: Thu Oct 19 2017 - 04:51:20 EST


On Tue, Oct 17, 2017 at 05:42:53PM -0500, Gustavo A. R. Silva wrote:
> This code was tested by compilation only (GCC 7.2.0 was used).
>
No worry, this case really has to fall through.

> diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
> index 7135f46..f517942 100644
> --- a/net/l2tp/l2tp_netlink.c
> +++ b/net/l2tp/l2tp_netlink.c
> @@ -406,7 +406,7 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32 portid, u32 seq, int fla
> if (nla_put_u16(skb, L2TP_ATTR_UDP_SPORT, ntohs(inet->inet_sport)) ||
> nla_put_u16(skb, L2TP_ATTR_UDP_DPORT, ntohs(inet->inet_dport)))
> goto nla_put_failure;
> - /* NOBREAK */
> + /* fall through */
> case L2TP_ENCAPTYPE_IP:
>
Nit: extra whitespace before '*/' (just couldn't restrain myself from
noticing).

Acked-by: Guillaume Nault <g.nault@xxxxxxxxxxxx>