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Message-ID: <20240201170937.3549878-13-edumazet@google.com>
Date: Thu, 1 Feb 2024 17:09:33 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org, eric.dumazet@...il.com,
Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 12/16] ip6_vti: use exit_batch_rtnl() method
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
and one unregister_netdevice_many() call.
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
net/ipv6/ip6_vti.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index e550240c85e1c9f2fe2b835e903de28e1f08b3bc..cfe1b1ad4d85d303597784d5eeb3077383978d95 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -1174,24 +1174,22 @@ static int __net_init vti6_init_net(struct net *net)
return err;
}
-static void __net_exit vti6_exit_batch_net(struct list_head *net_list)
+static void __net_exit vti6_exit_batch_rtnl(struct list_head *net_list,
+ struct list_head *dev_to_kill)
{
struct vti6_net *ip6n;
struct net *net;
- LIST_HEAD(list);
- rtnl_lock();
+ ASSERT_RTNL();
list_for_each_entry(net, net_list, exit_list) {
ip6n = net_generic(net, vti6_net_id);
- vti6_destroy_tunnels(ip6n, &list);
+ vti6_destroy_tunnels(ip6n, dev_to_kill);
}
- unregister_netdevice_many(&list);
- rtnl_unlock();
}
static struct pernet_operations vti6_net_ops = {
.init = vti6_init_net,
- .exit_batch = vti6_exit_batch_net,
+ .exit_batch_rtnl = vti6_exit_batch_rtnl,
.id = &vti6_net_id,
.size = sizeof(struct vti6_net),
};
--
2.43.0.429.g432eaa2c6b-goog
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