devlink: Add devlink_param register and unregister

Define configuration parameters data structure.
Add functions to register and unregister the driver supported
configuration parameters table.
For each parameter registered, the driver should fill all the parameter's
fields. In case the only supported configuration mode is "driverinit"
the parameter's get()/set() functions are not required and should be set
to NULL, for any other configuration mode, these functions are required
and should be set by the driver.

Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h
index 75cb5450c851..d814fa67c7b9 100644
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -142,6 +142,16 @@ enum devlink_port_flavour {
                                    */
 };
 
+enum devlink_param_cmode {
+        DEVLINK_PARAM_CMODE_RUNTIME,
+        DEVLINK_PARAM_CMODE_DRIVERINIT,
+        DEVLINK_PARAM_CMODE_PERMANENT,
+
+        /* Add new configuration modes above */
+        __DEVLINK_PARAM_CMODE_MAX,
+        DEVLINK_PARAM_CMODE_MAX = __DEVLINK_PARAM_CMODE_MAX - 1
+};
+
 enum devlink_attr {
         /* don't change the order or add anything between, this is ABI! */
         DEVLINK_ATTR_UNSPEC,