Moshe Shemesh 7b19119f4c
net/mlx5: Use devl_ API in mlx5e_devlink_port_register ...
As part of the flows invoked by mlx5_devlink_eswitch_mode_set() get to
mlx5_rescan_drivers_locked() which can call mlx5e_probe()/mlx5e_remove
and register/unregister mlx5e driver ports accordingly. This can lead to
deadlock once mlx5_devlink_eswitch_mode_set() will use devlink lock.
Use devl_port_register/unregister() instead of
devlink_port_register/unregister() and add devlink instance locks in the
driver paths to this function to have it locked while calling devl_ API
function.
If remove or probe were called by module init or module cleanup flows,
need to lock devlink just before calling devl_port_register(), otherwise
it is called by attach/detach or register/unregister flow and we can
have the flow locked. Added flag to distinguish between these cases.
This will be used by the downstream patch to invoke
mlx5_devlink_eswitch_mode_set() with devlink locked.
Signed-off-by: Moshe Shemesh <moshe@nvidia.com >
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com >
Signed-off-by: Paolo Abeni <pabeni@redhat.com >
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