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devlink: Add new "io_eq_size" generic device param
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>
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@ -129,3 +129,6 @@ own name.
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will NACK any attempt of other host to reset the device. This parameter
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is useful for setups where a device is shared by different hosts, such
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as multi-host setup.
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* - ``io_eq_size``
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- u32
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- Control the size of I/O completion EQs.
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@ -459,6 +459,7 @@ enum devlink_param_generic_id {
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DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
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DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
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DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
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DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
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/* add new param generic ids above here*/
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__DEVLINK_PARAM_GENERIC_ID_MAX,
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@ -511,6 +512,9 @@ enum devlink_param_generic_id {
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#define DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME "enable_iwarp"
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#define DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE DEVLINK_PARAM_TYPE_BOOL
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#define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME "io_eq_size"
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#define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE DEVLINK_PARAM_TYPE_U32
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#define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate) \
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{ \
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.id = DEVLINK_PARAM_GENERIC_ID_##_id, \
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@ -4466,6 +4466,11 @@ static const struct devlink_param devlink_param_generic[] = {
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.name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME,
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.type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE,
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},
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{
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.id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
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.name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
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.type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
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},
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};
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static int devlink_param_generic_verify(const struct devlink_param *param)
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