korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-27 14:14:24 +08:00
Code Issues Packages Projects Releases Wiki Activity

xfrm: interface: use exit_batch_rtnl() method

Browse Source 
exit_batch_rtnl() is called while RTNL is held,
and devices to be unregistered can be queued in the dev_kill_list.

This saves one rtnl_lock()/rtnl_unlock() pair per netns
and one unregister_netdevice_many() call.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Antoine Tenart <atenart@kernel.org>
Link: https://lore.kernel.org/r/20240206144313.2050392-17-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2024-02-06 14:43:12 +00:00 committed by Jakub Kicinski
parent 806b678507
commit 8962daccc2
1 changed files with 6 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
net/xfrm/xfrm_interface_core.c
View File

@ -957,12 +957,12 @@ static struct rtnl_link_ops xfrmi_link_ops __read_mostly = {
.get_link_net = xfrmi_get_link_net,
};
static void __net_exit xfrmi_exit_batch_net(struct list_head *net_exit_list)
static void __net_exit xfrmi_exit_batch_rtnl(struct list_head *net_exit_list,
struct list_head *dev_to_kill)
{
struct net *net;
LIST_HEAD(list);
rtnl_lock();
ASSERT_RTNL();
list_for_each_entry(net, net_exit_list, exit_list) {
struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id);
struct xfrm_if __rcu **xip;
@ -973,18 +973,16 @@ static void __net_exit xfrmi_exit_batch_net(struct list_head *net_exit_list)
for (xip = &xfrmn->xfrmi[i];
(xi = rtnl_dereference(*xip)) != NULL;
xip = &xi->next)
unregister_netdevice_queue(xi->dev, &list);
unregister_netdevice_queue(xi->dev, dev_to_kill);
}
xi = rtnl_dereference(xfrmn->collect_md_xfrmi);
if (xi)
unregister_netdevice_queue(xi->dev, &list);
unregister_netdevice_queue(xi->dev, dev_to_kill);
}
unregister_netdevice_many(&list);
rtnl_unlock();
}
static struct pernet_operations xfrmi_net_ops = {
.exit_batch = xfrmi_exit_batch_net,
.exit_batch_rtnl = xfrmi_exit_batch_rtnl,
.id = &xfrmi_net_id,
.size = sizeof(struct xfrmi_net),
};