diff options
| author | Kuniyuki Iwashima <kuniyu@google.com> | 2026-07-03 00:09:18 +0000 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-07-11 12:57:50 +0200 |
| commit | d0008553a70a306c10ca2a596f449971d0579d50 (patch) | |
| tree | 1e0a02f3ad304e4b81ebcd46a66c1c08a601d216 /include/linux | |
| parent | af3634d4ac652cd93cb97dd2ad2f01536c2cebc7 (diff) | |
net: Call unregister_netdevice_many() per netns.
For per-netns device unregistration, the list passed to
unregister_netdevice_many() must contain devices from a single
netns only (once all callers are converted).
Let's move collected devices in the following functions to
net->dev_unreg_head and let __rtnl_net_unlock() pass them to
unregister_netdevice_many().
* default_device_exit_batch()
* ops_exit_rtnl_list()
* __rtnl_kill_links()
This allows incremental conversion of each driver to support
per-netns device unregistration without affecting the normal
kernel where CONFIG_DEBUG_NET_SMALL_RTNL is disabled.
Note that this change unbatches synchronize_rcu() etc in
unregister_netdevice_many(), but we can later split it into
multiple stages to batch them again.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260703001009.1572444-8-kuniyu@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netdevice.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 108d8d7ea75b..8db25b79573e 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3481,6 +3481,7 @@ static inline void unregister_netdevice(struct net_device *dev) void unregister_netdevice_queue_net(struct net *net, struct net_device *dev, struct list_head *head); void unregister_netdevice_many_net(struct net *net); +void unregister_netdevice_queue_many_net(struct net *net, struct list_head *head); #else static inline void unregister_netdevice_queue_net(struct net *net, struct net_device *dev, @@ -3488,6 +3489,11 @@ static inline void unregister_netdevice_queue_net(struct net *net, { unregister_netdevice_queue(dev, head); } + +static inline void unregister_netdevice_queue_many_net(struct net *net, + struct list_head *head) +{ +} #endif int netdev_refcnt_read(const struct net_device *dev); |