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devlink: Introduce new attribute 'tx_priority' to devlink-rate

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To fully utilize offload capabilities of Intel 100G card QoS capabilities
new attribute 'tx_priority' needs to be introduced. This attribute allows
for usage of strict priority arbiter among siblings. This arbitration
scheme attempts to schedule nodes based on their priority as long as the
nodes remain within their bandwidth limit.

Introduce new attribute in devlink-rate that will allow for configuration
of strict priority. New attribute is optional.

Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Michal Wilczynski
2022-11-15 11:48:15 +01:00
committed by Jakub Kicinski
parent 4ab45e973c
commit cd50223683
3 changed files with 38 additions and 0 deletions
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include/uapi/linux/devlink.h
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@@ -607,6 +607,7 @@ enum devlink_attr {
DEVLINK_ATTR_SELFTESTS, /* nested */
DEVLINK_ATTR_RATE_TX_PRIORITY, /* u32 */
/* add new attributes above here, update the policy in devlink.c */
__DEVLINK_ATTR_MAX,