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devlink: Add port-level resource registration infrastructure

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The current devlink resource infrastructure supports only device-level
resources. Some hardware resources are associated with specific ports
rather than the entire device, and today we have no way to show resource
per-port.

Add support for registering resources at the port level.

Signed-off-by: Or Har-Toov <ohartoov@nvidia.com>
Reviewed-by: Shay Drori <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260407194107.148063-3-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Or Har-Toov
2026-04-07 22:40:57 +03:00
committed by Jakub Kicinski
parent 7be3163c49
commit 6f38acfed5
3 changed files with 53 additions and 0 deletions
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8
include/net/devlink.h
View File

@@ -129,6 +129,7 @@ struct devlink_rate {
struct devlink_port {
struct list_head list;
struct list_head region_list;
struct list_head resource_list;
struct devlink *devlink;
const struct devlink_port_ops *ops;
unsigned int index;
@@ -1891,6 +1892,13 @@ void devlink_resources_unregister(struct devlink *devlink);
int devl_resource_size_get(struct devlink *devlink,
u64 resource_id,
u64 *p_resource_size);
int
devl_port_resource_register(struct devlink_port *devlink_port,
const char *resource_name,
u64 resource_size, u64 resource_id,
u64 parent_resource_id,
const struct devlink_resource_size_params *params);
void devl_port_resources_unregister(struct devlink_port *devlink_port);
int devl_dpipe_table_resource_set(struct devlink *devlink,
const char *table_name, u64 resource_id,
u64 resource_units);

2
net/devlink/port.c
View File

@@ -1025,6 +1025,7 @@ void devlink_port_init(struct devlink *devlink,
return;
devlink_port->devlink = devlink;
INIT_LIST_HEAD(&devlink_port->region_list);
INIT_LIST_HEAD(&devlink_port->resource_list);
devlink_port->initialized = true;
}
EXPORT_SYMBOL_GPL(devlink_port_init);
@@ -1042,6 +1043,7 @@ EXPORT_SYMBOL_GPL(devlink_port_init);
void devlink_port_fini(struct devlink_port *devlink_port)
{
WARN_ON(!list_empty(&devlink_port->region_list));
WARN_ON(!list_empty(&devlink_port->resource_list));
}
EXPORT_SYMBOL_GPL(devlink_port_fini);

43
net/devlink/resource.c
View File

@@ -532,3 +532,46 @@ void devl_resource_occ_get_unregister(struct devlink *devlink,
resource->occ_get_priv = NULL;
}
EXPORT_SYMBOL_GPL(devl_resource_occ_get_unregister);
/**
* devl_port_resource_register - devlink port resource register
*
* @devlink_port: devlink port
* @resource_name: resource's name
* @resource_size: resource's size
* @resource_id: resource's id
* @parent_resource_id: resource's parent id
* @params: size parameters
*
* Generic resources should reuse the same names across drivers.
* Please see the generic resources list at:
* Documentation/networking/devlink/devlink-resource.rst
*
* Return: 0 on success, negative error code otherwise.
*/
int
devl_port_resource_register(struct devlink_port *devlink_port,
const char *resource_name,
u64 resource_size, u64 resource_id,
u64 parent_resource_id,
const struct devlink_resource_size_params *params)
{
return __devl_resource_register(devlink_port->devlink,
&devlink_port->resource_list,
resource_name, resource_size,
resource_id, parent_resource_id,
params);
}
EXPORT_SYMBOL_GPL(devl_port_resource_register);
/**
* devl_port_resources_unregister - unregister all devlink port resources
*
* @devlink_port: devlink port
*/
void devl_port_resources_unregister(struct devlink_port *devlink_port)
{
__devl_resources_unregister(devlink_port->devlink,
&devlink_port->resource_list);
}
EXPORT_SYMBOL_GPL(devl_port_resources_unregister);