[PATCH 5.10 013/105] net: inline rollback_registered()

Greg Kroah-Hartman
2022-07-27T16:48:22Z

From: Fedor Pchelkin <pchelkin@ispras.ru>

From: Jakub Kicinski <kuba@kernel.org>

commit 037e56bd965e1bc72c2fa9684ac25b56839a338e upstream.

rollback_registered() is a local helper, it's common for driver
code to call unregister_netdevice_queue(dev, NULL) when they
want to unregister netdevices under rtnl_lock. Inline
rollback_registered() and adjust the only remaining caller.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/core/dev.c | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)

--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -9601,15 +9601,6 @@ static void rollback_registered_many(str
}
}

-static void rollback_registered(struct net_device *dev)
-{
- LIST_HEAD(single);
-
- list_add(&dev->unreg_list, &single);
- rollback_registered_many(&single);
- list_del(&single);
-}
-
static netdev_features_t netdev_sync_upper_features(struct net_device *lower,
struct net_device *upper, netdev_features_t features)
{
@@ -10148,7 +10139,7 @@ int register_netdevice(struct net_device
if (ret) {
/* Expect explicit free_netdev() on failure */
dev->needs_free_netdev = false;
- rollback_registered(dev);
+ unregister_netdevice_queue(dev, NULL);
goto out;
}
/*
@@ -10755,7 +10746,11 @@ void unregister_netdevice_queue(struct n
if (head) {
list_move_tail(&dev->unreg_list, head);
} else {
- rollback_registered(dev);
+ LIST_HEAD(single);
+
+ list_add(&dev->unreg_list, &single);
+ rollback_registered_many(&single);
+ list_del(&single);
}
}
EXPORT_SYMBOL(unregister_netdevice_queue);