This is a note to let you know that I've just added the patch titled
net: inline rollback_registered()
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-inline-rollback_registered.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sat Jul 23 05:03:39 PM CEST 2022
From: Fedor Pchelkin <pchelkin@xxxxxxxxx>
Date: Fri, 15 Jul 2022 19:26:30 +0300
Subject: net: inline rollback_registered()
To: stable@xxxxxxxxxxxxxxx, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Fedor Pchelkin <pchelkin@xxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Alexey Khoroshilov <khoroshilov@xxxxxxxxx>, Edwin Peer <edwin.peer@xxxxxxxxxxxx>
Message-ID: <20220715162632.332718-6-pchelkin@xxxxxxxxx>
From: Fedor Pchelkin <pchelkin@xxxxxxxxx>
From: Jakub Kicinski <kuba@xxxxxxxxxx>
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@xxxxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Fedor Pchelkin <pchelkin@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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);
Patches currently in stable-queue which might be from pchelkin@xxxxxxxxx are
queue-5.10/net-make-sure-devices-go-through-netdev_wait_all_refs.patch
queue-5.10/net-make-free_netdev-more-lenient-with-unregistering-devices.patch
queue-5.10/docs-net-explain-struct-net_device-lifetime.patch
queue-5.10/net-move-rollback_registered_many.patch
queue-5.10/net-inline-rollback_registered_many.patch
queue-5.10/net-move-net_set_todo-inside-rollback_registered.patch
queue-5.10/net-inline-rollback_registered.patch
