From: Gustavo A. R. Silva <gustavoars@kernel.org>
Date: Fri, 20 Nov 2020 18:25:57 +0000 (-0600)
Subject: ipv4: Fix fall-through warnings for Clang
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=79121184f8e7c41c0ffe483f402b9d7f89256698;p=linux.git

ipv4: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding multiple break statements instead of just
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@kernel.org>
---

diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 36ed85bf2ad51..fab0958c41bed 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -450,6 +450,7 @@ static int ah4_err(struct sk_buff *skb, u32 info)
 	case ICMP_DEST_UNREACH:
 		if (icmp_hdr(skb)->code != ICMP_FRAG_NEEDED)
 			return 0;
+		break;
 	case ICMP_REDIRECT:
 		break;
 	default:
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 35803ab7ac804..8e3b445a8c219 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -982,6 +982,7 @@ static int esp4_err(struct sk_buff *skb, u32 info)
 	case ICMP_DEST_UNREACH:
 		if (icmp_hdr(skb)->code != ICMP_FRAG_NEEDED)
 			return 0;
+		break;
 	case ICMP_REDIRECT:
 		break;
 	default:
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index a632b66bc13ab..4c0c33e4710da 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -1874,6 +1874,7 @@ static int call_fib_nh_notifiers(struct fib_nh *nh,
 		    (nh->fib_nh_flags & RTNH_F_DEAD))
 			return call_fib4_notifiers(dev_net(nh->fib_nh_dev),
 						   event_type, &info.info);
+		break;
 	default:
 		break;
 	}
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index 31c6c6d99d5ec..eb560eecee089 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -351,6 +351,7 @@ static int vti4_err(struct sk_buff *skb, u32 info)
 	case ICMP_DEST_UNREACH:
 		if (icmp_hdr(skb)->code != ICMP_FRAG_NEEDED)
 			return 0;
+		break;
 	case ICMP_REDIRECT:
 		break;
 	default:
diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c
index b42683212c659..bbb56f5e06dde 100644
--- a/net/ipv4/ipcomp.c
+++ b/net/ipv4/ipcomp.c
@@ -31,6 +31,7 @@ static int ipcomp4_err(struct sk_buff *skb, u32 info)
 	case ICMP_DEST_UNREACH:
 		if (icmp_hdr(skb)->code != ICMP_FRAG_NEEDED)
 			return 0;
+		break;
 	case ICMP_REDIRECT:
 		break;
 	default: