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devlink: Add new "enable_vnet" generic device param

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Add new device generic parameter to enable/disable creation of
VDPA net auxiliary device and associated device functionality
in the devlink instance.

User who prefers to disable such functionality can disable it using below
example.

$ devlink dev param set pci/0000:06:00.0 \
              name enable_vnet value false cmode driverinit
$ devlink dev reload pci/0000:06:00.0

At this point devlink instance do not create auxiliary device for the
VDPA net functionality.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Parav Pandit 2021-08-10 16:24:17 +03:00 committed by David S. Miller
parent 8ddaabee3c
commit 076b2a9dbb
3 changed files with 13 additions and 0 deletions
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4
Documentation/networking/devlink/devlink-params.rst
View File

@ -105,6 +105,10 @@ own name.
- Boolean
- When enabled, the device driver will instantiate RDMA specific
auxiliary device of the devlink device.
* - ``enable_vnet``
- Boolean
- When enabled, the device driver will instantiate VDPA networking
specific auxiliary device of the devlink device.
* - ``internal_err_reset``
- Boolean
- When enabled, the device driver will reset the device on internal

4
include/net/devlink.h
View File

@ -521,6 +521,7 @@ enum devlink_param_generic_id {
DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
/* add new param generic ids above here*/
__DEVLINK_PARAM_GENERIC_ID_MAX,
@ -567,6 +568,9 @@ enum devlink_param_generic_id {
#define DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME "enable_rdma"
#define DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE DEVLINK_PARAM_TYPE_BOOL
#define DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME "enable_vnet"
#define DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE DEVLINK_PARAM_TYPE_BOOL
#define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate) \
{ \
.id = DEVLINK_PARAM_GENERIC_ID_##_id, \

5
net/core/devlink.c
View File

@ -4287,6 +4287,11 @@ static const struct devlink_param devlink_param_generic[] = {
.name = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME,
.type = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE,
},
{
.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
.name = DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME,
.type = DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE,
},
};
static int devlink_param_generic_verify(const struct devlink_param *param)