devlink: Add a generic wake_on_lan port parameter

wake_on_lan - Enables Wake on Lan for this port. If enabled,
the controller asserts a wake pin based on the WOL type.

v2->v3:
- Define only WOL types used now and define them as bitfield, so that
  mutliple WOL types can be enabled upon power on.
- Modify "wake-on-lan" name to "wake_on_lan" to be symmetric with
  previous definitions.
- Rename DEVLINK_PARAM_WOL_XXX to DEVLINK_PARAM_WAKE_XXX to be
  symmetrical with ethtool WOL definitions.

Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/devlink.h

@@ -367,12 +367,17 @@ enum devlink_param_generic_id {
 	DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
 	DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
 	DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
+	DEVLINK_PARAM_GENERIC_ID_WOL,
 
 	/* add new param generic ids above here*/
 	__DEVLINK_PARAM_GENERIC_ID_MAX,
 	DEVLINK_PARAM_GENERIC_ID_MAX = __DEVLINK_PARAM_GENERIC_ID_MAX - 1,
 };
 
+enum devlink_param_wol_types {
+	DEVLINK_PARAM_WAKE_MAGIC = (1 << 0),
+};
+
 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME "internal_error_reset"
 #define DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
 
@@ -397,6 +402,9 @@ enum devlink_param_generic_id {
 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME "fw_load_policy"
 #define DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE DEVLINK_PARAM_TYPE_U8
 
+#define DEVLINK_PARAM_GENERIC_WOL_NAME "wake_on_lan"
+#define DEVLINK_PARAM_GENERIC_WOL_TYPE DEVLINK_PARAM_TYPE_U8
+
 #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate)	\
 {									\
 	.id = DEVLINK_PARAM_GENERIC_ID_##_id,				\

net/core/devlink.c

@@ -2697,6 +2697,11 @@ static const struct devlink_param devlink_param_generic[] = {
 		.name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
 		.type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
 	},
+	{
+		.id = DEVLINK_PARAM_GENERIC_ID_WOL,
+		.name = DEVLINK_PARAM_GENERIC_WOL_NAME,
+		.type = DEVLINK_PARAM_GENERIC_WOL_TYPE,
+	},
 };
 
 static int devlink_param_generic_verify(const struct devlink_param *param)