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[RTNL]: Introduce the rtnl_kill_links helper.

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This one is responsible for calling ->dellink on each net
device found in net to help with vlan net_exit hook in the
nearest future.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2008-04-16 00:46:52 -07:00 committed by David S. Miller
parent 3a931a80cb
commit 669f87baab
2 changed files with 22 additions and 8 deletions
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1
include/net/rtnetlink.h
View file

@ -74,6 +74,7 @@ struct rtnl_link_ops {
extern int __rtnl_link_register(struct rtnl_link_ops *ops);
extern void __rtnl_link_unregister(struct rtnl_link_ops *ops);
extern void rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops);
extern int rtnl_link_register(struct rtnl_link_ops *ops);
extern void rtnl_link_unregister(struct rtnl_link_ops *ops);

29
net/core/rtnetlink.c
View file

@ -269,6 +269,26 @@ int rtnl_link_register(struct rtnl_link_ops *ops)
EXPORT_SYMBOL_GPL(rtnl_link_register);
static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
{
struct net_device *dev;
restart:
for_each_netdev(net, dev) {
if (dev->rtnl_link_ops == ops) {
ops->dellink(dev);
goto restart;
}
}
}
void rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
{
rtnl_lock();
__rtnl_kill_links(net, ops);
rtnl_unlock();
}
EXPORT_SYMBOL_GPL(rtnl_kill_links);
/**
* __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
* @ops: struct rtnl_link_ops * to unregister
@ -277,17 +297,10 @@ EXPORT_SYMBOL_GPL(rtnl_link_register);
*/
void __rtnl_link_unregister(struct rtnl_link_ops *ops)
{
struct net_device *dev;
struct net *net;
for_each_net(net) {
restart:
for_each_netdev(net, dev) {
if (dev->rtnl_link_ops == ops) {
ops->dellink(dev);
goto restart;
}
}
__rtnl_kill_links(net, ops);
}
list_del(&ops->list);
}