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[IPV6]: Event type in addrconf_ifdown is mis-used. 

addrconf_ifdown is broken in respect to the usage of how
parameter. This function is called with (event != NETDEV_DOWN) and (2)
on the IPv6 stop.  It the latter case inet6_dev from loopback device
should be destroyed.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Denis V. Lunev 2008-04-03 13:30:17 -07:00 committed by David S. Miller
parent af2681828a
commit 439e23857a
1 changed files with 5 additions and 5 deletions
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10
net/ipv6/addrconf.c
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@ -2469,7 +2469,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
/* Step 1: remove reference to ipv6 device from parent device.
Do not dev_put!
*/
if (how == 1) {
if (how) {
idev->dead = 1;
/* protected by rtnl_lock */
@ -2501,12 +2501,12 @@ static int addrconf_ifdown(struct net_device *dev, int how)
write_lock_bh(&idev->lock);
/* Step 3: clear flags for stateless addrconf */
if (how != 1)
if (!how)
idev->if_flags &= ~(IF_RS_SENT|IF_RA_RCVD|IF_READY);
/* Step 4: clear address list */
#ifdef CONFIG_IPV6_PRIVACY
if (how == 1 && del_timer(&idev->regen_timer))
if (how && del_timer(&idev->regen_timer))
in6_dev_put(idev);
/* clear tempaddr list */
@ -2543,7 +2543,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
/* Step 5: Discard multicast list */
if (how == 1)
if (how)
ipv6_mc_destroy_dev(idev);
else
ipv6_mc_down(idev);
@ -2552,7 +2552,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
/* Shot the device (if unregistered) */
if (how == 1) {
if (how) {
addrconf_sysctl_unregister(idev);
neigh_parms_release(&nd_tbl, idev->nd_parms);
neigh_ifdown(&nd_tbl, dev);