Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-14 16:12:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

devlink: Add new "io_eq_size" generic device param

Browse Source 
Add new device generic parameter to determine the size of the
I/O completion EQs.

For example, to reduce I/O EQ size to 64, execute:
$ devlink dev param set pci/0000:06:00.0 \
              name io_eq_size value 64 cmode driverinit
$ devlink dev reload pci/0000:06:00.0

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Shay Drory 2021-12-09 12:09:24 +02:00 committed by Saeed Mahameed
parent f4f2970dfd
commit 47402385d0
3 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/networking/devlink/devlink-params.rst
View File

@ -129,3 +129,6 @@ own name.
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.
* - ``io_eq_size``
- u32
- Control the size of I/O completion EQs.

4
include/net/devlink.h
View File

@ -459,6 +459,7 @@ enum devlink_param_generic_id {
DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
/* add new param generic ids above here*/
__DEVLINK_PARAM_GENERIC_ID_MAX,
@ -511,6 +512,9 @@ enum devlink_param_generic_id {
#define DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME "enable_iwarp"
#define DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE DEVLINK_PARAM_TYPE_BOOL
#define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME "io_eq_size"
#define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE DEVLINK_PARAM_TYPE_U32
#define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate) \
{ \
.id = DEVLINK_PARAM_GENERIC_ID_##_id, \

5
net/core/devlink.c
View File

@ -4466,6 +4466,11 @@ static const struct devlink_param devlink_param_generic[] = {
.name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME,
.type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE,
},
{
.id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
.name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
.type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
},
};
static int devlink_param_generic_verify(const struct devlink_param *param)