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ipv6: Send netlink notification when DAD fails

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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@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2010-03-13 12:23:29 -08:00 committed by David S. Miller
parent 3f07d12951
commit e2577a0658
1 changed files with 2 additions and 0 deletions
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2
net/ipv6/addrconf.c
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@ -1380,6 +1380,8 @@ static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
if (dad_failed) if (dad_failed)
ifp->flags |= IFA_F_DADFAILED; ifp->flags |= IFA_F_DADFAILED;
spin_unlock_bh(&ifp->lock); spin_unlock_bh(&ifp->lock);
if (dad_failed)
ipv6_ifa_notify(0, ifp);
in6_ifa_put(ifp); in6_ifa_put(ifp);
#ifdef CONFIG_IPV6_PRIVACY #ifdef CONFIG_IPV6_PRIVACY
} else if (ifp->flags&IFA_F_TEMPORARY) { } else if (ifp->flags&IFA_F_TEMPORARY) {