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[IPV6]: Track device renames in snmp6. 

When network device's are renamed, the IPV6 snmp6 code
gets confused. It doesn't track name changes so it will OOPS
when network device's are removed.

The fix is trivial, just unregister/re-register in notify handler.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2007-04-28 21:16:39 -07:00 committed by David S. Miller
parent aad97f38b7
commit 5632c5152a
2 changed files with 5 additions and 2 deletions
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6
net/ipv6/addrconf.c
View File

@ -2359,8 +2359,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
break;
case NETDEV_CHANGENAME:
#ifdef CONFIG_SYSCTL
if (idev) {
snmp6_unregister_dev(idev);
#ifdef CONFIG_SYSCTL
addrconf_sysctl_unregister(&idev->cnf);
neigh_sysctl_unregister(idev->nd_parms);
neigh_sysctl_register(dev, idev->nd_parms,
@ -2368,8 +2369,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
&ndisc_ifinfo_sysctl_change,
NULL);
addrconf_sysctl_register(idev, &idev->cnf);
}
#endif
snmp6_register_dev(idev);
}
break;
}

1
net/ipv6/proc.c
View File

@ -223,6 +223,7 @@ int snmp6_unregister_dev(struct inet6_dev *idev)
return -EINVAL;
remove_proc_entry(idev->stats.proc_dir_entry->name,
proc_net_devsnmp6);
idev->stats.proc_dir_entry = NULL;
return 0;
}