Commit 6bdcb735 authored by Cosmin Ratiu's avatar Cosmin Ratiu Committed by Jakub Kicinski
Browse files

devlink: Add a 'num_doorbells' driverinit param 



This parameter can be used by drivers to configure a different number of
doorbells.

Signed-off-by: default avatarCosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: default avatarDragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: default avatarJiri Pirko <jiri@nvidia.com>
Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 325db9c6

Documentation/networking/devlink/devlink-params.rst

+3 −0
Original line number Diff line number Diff line
@@ -148,3 +148,6 @@ own name. 
     - The max number of Virtual Functions (VFs) exposed by the PF.

       after reboot/pci reset, 'sriov_totalvfs' entry under the device's sysfs

       directory will report this value.

   * - ``num_doorbells``

     - u32

     - Controls the number of doorbells used by the device.

include/net/devlink.h

+4 −0
Original line number Diff line number Diff line
@@ -531,6 +531,7 @@ enum devlink_param_generic_id { 
	DEVLINK_PARAM_GENERIC_ID_ENABLE_PHC,

	DEVLINK_PARAM_GENERIC_ID_CLOCK_ID,

	DEVLINK_PARAM_GENERIC_ID_TOTAL_VFS,

	DEVLINK_PARAM_GENERIC_ID_NUM_DOORBELLS,



	/* add new param generic ids above here*/

	__DEVLINK_PARAM_GENERIC_ID_MAX,
@@ -598,6 +599,9 @@ enum devlink_param_generic_id { 
#define DEVLINK_PARAM_GENERIC_TOTAL_VFS_NAME "total_vfs"

#define DEVLINK_PARAM_GENERIC_TOTAL_VFS_TYPE DEVLINK_PARAM_TYPE_U32



#define DEVLINK_PARAM_GENERIC_NUM_DOORBELLS_NAME "num_doorbells"

#define DEVLINK_PARAM_GENERIC_NUM_DOORBELLS_TYPE DEVLINK_PARAM_TYPE_U32



#define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate)	\

{									\

	.id = DEVLINK_PARAM_GENERIC_ID_##_id,				\

net/devlink/param.c

+5 −0
Original line number Diff line number Diff line
@@ -107,6 +107,11 @@ static const struct devlink_param devlink_param_generic[] = { 
		.name = DEVLINK_PARAM_GENERIC_TOTAL_VFS_NAME,

		.type = DEVLINK_PARAM_GENERIC_TOTAL_VFS_TYPE,

	},

	{

		.id = DEVLINK_PARAM_GENERIC_ID_NUM_DOORBELLS,

		.name = DEVLINK_PARAM_GENERIC_NUM_DOORBELLS_NAME,

		.type = DEVLINK_PARAM_GENERIC_NUM_DOORBELLS_TYPE,

	},

};



static int devlink_param_generic_verify(const struct devlink_param *param)