netdev - [PATCH net-next v2] IPv6: enable bind() to assign an anycast address

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Date:	Mon, 13 Jan 2014 17:59:37 +0100
From:	Francois-Xavier Le Bail <fx.lebail@...oo.com>
To:	netdev@...r.kernel.org
Cc:	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki Yoshifuji <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>,
	Francois-Xavier Le Bail <fx.lebail@...oo.com>
Subject: [PATCH net-next v2] IPv6: enable bind() to assign an anycast address

- Use ipv6_chk_acast_addr_src() in inet6_bind().

Signed-off-by: Francois-Xavier Le Bail <fx.lebail@...oo.com>
---
Tested with SOCK_DGRAM and SOCK_STREAM sockets.
Tested with link-local and global anycast addresses.

 net/ipv6/af_inet6.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index c921d5d..68b81e9 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -347,7 +347,9 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 			if (!(addr_type & IPV6_ADDR_MULTICAST))	{
 				if (!(inet->freebind || inet->transparent) &&
 				    !ipv6_chk_addr(net, &addr->sin6_addr,
-						   dev, 0)) {
+						   dev, 0) &&
+				    !ipv6_chk_acast_addr_src(net, dev,
+							     &addr->sin6_addr)) {
 					err = -EADDRNOTAVAIL;
 					goto out_unlock;
 				}
--
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