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bridge: switch br_net_exit to batch mode 

cleanup_net() is competing with other rtnl users.

Instead of calling br_net_exit() for each netns,
call br_net_exit_batch() once.

This gives cleanup_net() ability to group more devices
and call unregister_netdevice_many() only once for all bridge devices.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Roopa Prabhu <roopa@nvidia.com>
Cc: Nikolay Aleksandrov <razor@blackwall.org>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2022-02-17 23:01:50 -08:00 committed by David S. Miller
parent a7cc3464e6
commit 36a29fb6b2
1 changed files with 9 additions and 6 deletions
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15
net/bridge/br.c
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@ -342,23 +342,26 @@ void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on)
clear_bit(opt, &br->options);
}
static void __net_exit br_net_exit(struct net *net)
static void __net_exit br_net_exit_batch(struct list_head *net_list)
{
struct net_device *dev;
struct net *net;
LIST_HEAD(list);
rtnl_lock();
for_each_netdev(net, dev)
if (netif_is_bridge_master(dev))
br_dev_delete(dev, &list);
list_for_each_entry(net, net_list, exit_list)
for_each_netdev(net, dev)
if (netif_is_bridge_master(dev))
br_dev_delete(dev, &list);
unregister_netdevice_many(&list);
rtnl_unlock();
rtnl_unlock();
}
static struct pernet_operations br_net_ops = {
.exit = br_net_exit,
.exit_batch = br_net_exit_batch,
};
static const struct stp_proto br_stp_proto = {