linux-kernel - [PATCH 3.17 014/141] ipv6: fix IPV6

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Message-Id: <20141119205151.142235360@linuxfoundation.org>
Date:	Wed, 19 Nov 2014 12:50:37 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.17 014/141] ipv6: fix IPV6_PKTINFO with v4 mapped

3.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Dumazet <edumazet@...gle.com>

[ Upstream commit 5337b5b75cd9bd3624a6820e3c2a084d2480061c ]

Use IS_ENABLED(CONFIG_IPV6), to enable this code if IPv6 is
a module.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Fixes: c8e6ad0829a7 ("ipv6: honor IPV6_PKTINFO with v4 mapped addresses on sendmsg")
Acked-by: Hannes Frederic Sowa <hannes@...essinduktion.org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/ipv4/ip_sockglue.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -195,7 +195,7 @@ int ip_cmsg_send(struct net *net, struct
 	for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
 		if (!CMSG_OK(msg, cmsg))
 			return -EINVAL;
-#if defined(CONFIG_IPV6)
+#if IS_ENABLED(CONFIG_IPV6)
 		if (allow_ipv6 &&
 		    cmsg->cmsg_level == SOL_IPV6 &&
 		    cmsg->cmsg_type == IPV6_PKTINFO) {


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