Commit 195d9dec authored by Moshe Shemesh's avatar Moshe Shemesh Committed by Jakub Kicinski
Browse files

devlink: Add enable_remote_dev_reset generic parameter 



The enable_remote_dev_reset devlink param flags that the host admin
allows device resets that can be initiated by other hosts. This
parameter is useful for setups where a device is shared by different
hosts, such as multi-host setup. Once the user set this parameter to
false, the driver should NACK any attempt to reset the device while the
driver is loaded.

Signed-off-by: default avatarMoshe Shemesh <moshe@mellanox.com>
Reviewed-by: default avatarJiri Pirko <jiri@nvidia.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 5ec69744

Documentation/networking/devlink/devlink-params.rst

+6 −0
Original line number Diff line number Diff line
@@ -108,3 +108,9 @@ own name. 
   * - ``region_snapshot_enable``

     - Boolean

     - Enable capture of ``devlink-region`` snapshots.

   * - ``enable_remote_dev_reset``

     - Boolean

     - Enable device reset by remote host. When cleared, the device driver

       will NACK any attempt of other host to reset the device. This parameter

       is useful for setups where a device is shared by different hosts, such

       as multi-host setup.

include/net/devlink.h

+4 −0
Original line number Diff line number Diff line
@@ -469,6 +469,7 @@ enum devlink_param_generic_id { 
	DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,

	DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,

	DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,

	DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,



	/* add new param generic ids above here*/

	__DEVLINK_PARAM_GENERIC_ID_MAX,
@@ -506,6 +507,9 @@ enum devlink_param_generic_id { 
#define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME "enable_roce"

#define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE DEVLINK_PARAM_TYPE_BOOL



#define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME "enable_remote_dev_reset"

#define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL



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

{									\

	.id = DEVLINK_PARAM_GENERIC_ID_##_id,				\

net/core/devlink.c

+5 −0
Original line number Diff line number Diff line
@@ -3521,6 +3521,11 @@ static const struct devlink_param devlink_param_generic[] = { 
		.name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,

		.type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,

	},

	{

		.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,

		.name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,

		.type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,

	},

};



static int devlink_param_generic_verify(const struct devlink_param *param)

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