linux-kernel - [PATCH 108/141] netfilter: ipt_REJECT: Fix fall-through warnings for Clang

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Date:   Fri, 20 Nov 2020 12:38:09 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>
Subject: [PATCH 108/141] netfilter: ipt_REJECT: Fix fall-through warnings for
 Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a break statement instead of letting the code fall
through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 net/ipv4/netfilter/ipt_REJECT.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index e16b98ee6266..7dbb10bbd0f5 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -57,6 +57,7 @@ reject_tg(struct sk_buff *skb, const struct xt_action_param *par)
 		break;
 	case IPT_TCP_RESET:
 		nf_send_reset(xt_net(par), skb, hook);
+		break;
 	case IPT_ICMP_ECHOREPLY:
 		/* Doesn't happen. */
 		break;
-- 
2.27.0