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Message-ID: <20100313111117.GA25903@gondor.apana.org.au>
Date: Sat, 13 Mar 2010 19:11:17 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: ipv6: Send netlink notification when DAD fails
Hi:
ipv6: Send netlink notification when DAD fails
If we are managing IPv6 addresses using DHCP, it would be nice
for user-space to be notified if an address configured through
DHCP fails DAD. Otherwise user-space would have to poll to see
whether DAD succeeds.
This patch uses the existing notification mechanism and simply
hooks it into the DAD failure code path.
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 88fd8c5..01d142e 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1380,6 +1380,8 @@ static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
if (dad_failed)
ifp->flags |= IFA_F_DADFAILED;
spin_unlock_bh(&ifp->lock);
+ if (dad_failed)
+ ipv6_ifa_notify(0, ifp);
in6_ifa_put(ifp);
#ifdef CONFIG_IPV6_PRIVACY
} else if (ifp->flags&IFA_F_TEMPORARY) {
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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