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net: devlink: add RNLT lock assertion to devlink_compat_switch_id_get() 

Similar to devlink_compat_phys_port_name_get(), make sure that
devlink_compat_switch_id_get() is called with RTNL lock held. Comment
already says so, so put this in code as well.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20220825112923.1359194-1-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jiri Pirko 2022-08-25 13:29:23 +02:00 committed by Jakub Kicinski
parent de9d555cb8
commit 6005a8aece
1 changed files with 2 additions and 0 deletions
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2
net/core/devlink.c
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@ -12505,6 +12505,8 @@ int devlink_compat_switch_id_get(struct net_device *dev,
* devlink_port instance cannot disappear in the middle. No need to take
* any devlink lock as only permanent values are accessed.
*/
ASSERT_RTNL();
devlink_port = netdev_to_devlink_port(dev);
if (!devlink_port || !devlink_port->switch_port)
return -EOPNOTSUPP;