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| author |   Jakub Kicinski <kuba@kernel.org> | 2022-11-09 13:46:05 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-11-09 13:46:05 -0800 |
| commit | bf9b85562a9a9c5065975b21a091ba2e9784caa5 (patch) | |
| tree | 7b135eb065d73822fdccb40ee9af123e8c3e75d1 | |
| parent | genetlink: correctly begin the iteration over policies (diff) | |
| parent | net: devlink: move netdev notifier block to dest namespace during reload (diff) | |
| download | wireguard-linux-bf9b85562a9a9c5065975b21a091ba2e9784caa5.tar.xz wireguard-linux-bf9b85562a9a9c5065975b21a091ba2e9784caa5.zip | |
Merge branch 'net-devlink-move-netdev-notifier-block-to-dest-namespace-during-reload'
Jiri Pirko says:
====================
net: devlink: move netdev notifier block to dest namespace during reload
Patch #1 is just a dependency of patch #2, which is the actual fix.
====================
Link: https://lore.kernel.org/r/20221108132208.938676-1-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | include/linux/netdevice.h | 2 | ||||
| -rw-r--r-- | net/core/dev.c | 22 | ||||
| -rw-r--r-- | net/core/devlink.c | 5 |
3 files changed, 24 insertions, 5 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 4be87b89e481..02a2318da7c7 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2826,6 +2826,8 @@ int unregister_netdevice_notifier(struct notifier_block *nb); int register_netdevice_notifier_net(struct net *net, struct notifier_block *nb); int unregister_netdevice_notifier_net(struct net *net, struct notifier_block *nb); +void move_netdevice_notifier_net(struct net *src_net, struct net *dst_net, + struct notifier_block *nb); int register_netdevice_notifier_dev_net(struct net_device *dev, struct notifier_block *nb, struct netdev_net_notifier *nn); diff --git a/net/core/dev.c b/net/core/dev.c index 707de6b841d0..117e830cabb0 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1861,6 +1861,22 @@ int unregister_netdevice_notifier_net(struct net *net, } EXPORT_SYMBOL(unregister_netdevice_notifier_net); +static void __move_netdevice_notifier_net(struct net *src_net, + struct net *dst_net, + struct notifier_block *nb) +{ + __unregister_netdevice_notifier_net(src_net, nb); + __register_netdevice_notifier_net(dst_net, nb, true); +} + +void move_netdevice_notifier_net(struct net *src_net, struct net *dst_net, + struct notifier_block *nb) +{ + rtnl_lock(); + __move_netdevice_notifier_net(src_net, dst_net, nb); + rtnl_unlock(); +} + int register_netdevice_notifier_dev_net(struct net_device *dev, struct notifier_block *nb, struct netdev_net_notifier *nn) @@ -1897,10 +1913,8 @@ static void move_netdevice_notifiers_dev_net(struct net_device *dev, { struct netdev_net_notifier *nn; - list_for_each_entry(nn, &dev->net_notifier_list, list) { - __unregister_netdevice_notifier_net(dev_net(dev), nn->nb); - __register_netdevice_notifier_net(net, nn->nb, true); - } + list_for_each_entry(nn, &dev->net_notifier_list, list) + __move_netdevice_notifier_net(dev_net(dev), net, nn->nb); } /** diff --git a/net/core/devlink.c b/net/core/devlink.c index 40fcdded57e6..ea0b319385fc 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -4502,8 +4502,11 @@ static int devlink_reload(struct devlink *devlink, struct net *dest_net, if (err) return err; - if (dest_net && !net_eq(dest_net, curr_net)) + if (dest_net && !net_eq(dest_net, curr_net)) { + move_netdevice_notifier_net(curr_net, dest_net, + &devlink->netdevice_nb); write_pnet(&devlink->_net, dest_net); + } err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack); devlink_reload_failed_set(devlink, !!err); |