linux.git/net/devlink/devl_internal.h, branch v7.1-rc2 Linux kernel source tree devlink: Include port resources in resource dump dumpit 2026-04-09T02:55:38+00:00 Or Har-Toov ohartoov@nvidia.com 2026-04-07T19:41:01+00:00 810b76394d69f340c0060260f7167639352b7217 Allow querying devlink resources per-port via the resource-dump dumpit handler. Both device-level and all ports resources are included in the reply. For example: $ devlink resource show pci/0000:03:00.0: name local_max_SFs size 508 unit entry name external_max_SFs size 508 unit entry pci/0000:03:00.0/196608: name max_SFs size 20 unit entry pci/0000:03:00.1: name local_max_SFs size 508 unit entry name external_max_SFs size 508 unit entry pci/0000:03:00.1/262144: name max_SFs size 20 unit entry Signed-off-by: Or Har-Toov <ohartoov@nvidia.com> Reviewed-by: Moshe Shemesh <moshe@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Link: https://patch.msgid.link/20260407194107.148063-7-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Allow querying devlink resources per-port via the resource-dump dumpit
handler. Both device-level and all ports resources are included in the
reply.

For example:

$ devlink resource show
pci/0000:03:00.0:
  name local_max_SFs size 508 unit entry
  name external_max_SFs size 508 unit entry
pci/0000:03:00.0/196608:
  name max_SFs size 20 unit entry
pci/0000:03:00.1:
  name local_max_SFs size 508 unit entry
  name external_max_SFs size 508 unit entry
pci/0000:03:00.1/262144:
  name max_SFs size 20 unit entry

Signed-off-by: Or Har-Toov <ohartoov@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260407194107.148063-7-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: allow devlink instance allocation without a backing device 2026-03-14T20:08:49+00:00 Jiri Pirko jiri@nvidia.com 2026-03-12T10:04:04+00:00 a4c6d53e5fd61829f707b7a723dd2937ed67c803 Allow devlink_alloc_ns() to be called with dev=NULL to support device-less devlink instances. When dev is NULL, the instance is identified over netlink using "devlink_index" as bus_name and the decimal index value as dev_name. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20260312100407.551173-11-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Allow devlink_alloc_ns() to be called with dev=NULL to support
device-less devlink instances. When dev is NULL, the instance is
identified over netlink using "devlink_index" as bus_name and
the decimal index value as dev_name.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260312100407.551173-11-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: add devl_warn() helper and use it in port warnings 2026-03-14T20:08:49+00:00 Jiri Pirko jiri@nvidia.com 2026-03-12T10:04:03+00:00 104733e1303efcec97c9a581adabbc03c6679006 Introduce devl_warn() macro that uses dev_warn() when a backing device is available and falls back to pr_warn() otherwise. Convert all dev_warn() calls in port.c to use it, preparing for devlink instances without a backing device. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20260312100407.551173-10-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Introduce devl_warn() macro that uses dev_warn() when a backing
device is available and falls back to pr_warn() otherwise. Convert
all dev_warn() calls in port.c to use it, preparing for devlink
instances without a backing device.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260312100407.551173-10-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: introduce __devlink_alloc() with dev driver pointer 2026-03-14T20:08:48+00:00 Jiri Pirko jiri@nvidia.com 2026-03-12T10:04:01+00:00 eb32a6310a7bcc6b26087a1a93981d3593aa17ea Introduce __devlink_alloc() as an internal devlink allocator that accepts a struct device_driver pointer and stores it in the devlink instance. This allows internal devlink code (e.g. shared instances) to associate a driver with a devlink instance without need to pass dev pointer. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20260312100407.551173-8-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Introduce __devlink_alloc() as an internal devlink allocator that
accepts a struct device_driver pointer and stores it in the devlink
instance. This allows internal devlink code (e.g. shared instances)
to associate a driver with a devlink instance without need to pass dev
pointer.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260312100407.551173-8-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: support index-based notification filtering 2026-03-14T20:08:48+00:00 Jiri Pirko jiri@nvidia.com 2026-03-12T10:04:00+00:00 089aeb4f2218ee0d7b53930e9f04a061240ce0f0 Extend the notification filter descriptor with devlink_index so that userspace can filter notifications by devlink instance index in addition to bus_name/dev_name. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20260312100407.551173-7-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Extend the notification filter descriptor with devlink_index so
that userspace can filter notifications by devlink instance index
in addition to bus_name/dev_name.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260312100407.551173-7-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: allow to use devlink index as a command handle 2026-03-14T20:08:47+00:00 Jiri Pirko jiri@nvidia.com 2026-03-12T10:03:58+00:00 d85a8af57da871964c60eb5b9ab121a6c31e3bd3 Currently devlink instances are addressed bus_name/dev_name tuple. Allow the newly introduced DEVLINK_ATTR_INDEX to be used as an alternative handle for all devlink commands. When DEVLINK_ATTR_INDEX is present in the request, use it for a direct xarray lookup instead of iterating over all instances comparing bus_name/dev_name strings. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20260312100407.551173-5-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Currently devlink instances are addressed bus_name/dev_name tuple.
Allow the newly introduced DEVLINK_ATTR_INDEX to be used as
an alternative handle for all devlink commands.

When DEVLINK_ATTR_INDEX is present in the request, use it for a direct
xarray lookup instead of iterating over all instances comparing
bus_name/dev_name strings.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260312100407.551173-5-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: add helpers to get bus_name/dev_name 2026-03-14T20:08:47+00:00 Jiri Pirko jiri@nvidia.com 2026-03-12T10:03:56+00:00 0f5531879afbf904f19a15b39f687a9ec47a82cc Introduce devlink_bus_name() and devlink_dev_name() helpers and convert all direct accesses to devlink->dev->bus->name and dev_name(devlink->dev) to use them. This prepares for dev-less devlink instances where these helpers will be extended to handle the missing device. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20260312100407.551173-3-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Introduce devlink_bus_name() and devlink_dev_name() helpers and
convert all direct accesses to devlink->dev->bus->name and
dev_name(devlink->dev) to use them.

This prepares for dev-less devlink instances where these helpers
will be extended to handle the missing device.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260312100407.551173-3-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: expose devlink instance index over netlink 2026-03-14T20:08:46+00:00 Jiri Pirko jiri@nvidia.com 2026-03-12T10:03:55+00:00 68deca0f0f4bba8c5278340c7c142500171d5f9b Each devlink instance has an internally assigned index used for xarray storage. Expose it as a new DEVLINK_ATTR_INDEX uint attribute alongside the existing bus_name and dev_name handle. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20260312100407.551173-2-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Each devlink instance has an internally assigned index used for xarray
storage. Expose it as a new DEVLINK_ATTR_INDEX uint attribute alongside
the existing bus_name and dev_name handle.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260312100407.551173-2-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: Refactor devlink_rate_nodes_check 2026-02-03T04:05:51+00:00 Cosmin Ratiu cratiu@nvidia.com 2026-01-28T11:25:35+00:00 29903edf04c25e63ba1475801fb7038d76c5054b devlink_rate_nodes_check() was used to verify there are no devlink rate nodes created when switching the esw mode. Rate management code is about to become more complex, so refactor this function: - remove unused param 'mode'. - add a new 'rate_filter' param. - rename to devlink_rates_check(). - expose devlink_rate_is_node() to be used as a rate filter. This makes it more usable from multiple places, so use it from those places as well. Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Carolina Jubran <cjubran@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Link: https://patch.msgid.link/20260128112544.1661250-6-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
devlink_rate_nodes_check() was used to verify there are no devlink rate
nodes created when switching the esw mode.

Rate management code is about to become more complex, so refactor this
function:
- remove unused param 'mode'.
- add a new 'rate_filter' param.
- rename to devlink_rates_check().
- expose devlink_rate_is_node() to be used as a rate filter.

This makes it more usable from multiple places, so use it from those
places as well.

Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260128112544.1661250-6-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: introduce devlink_nl_put_u64() 2024-10-29T23:52:56+00:00 Przemek Kitszel przemyslaw.kitszel@intel.com 2024-10-23T13:09:01+00:00 da3ee3cd79ca900ae435777bd3193080197c2aca Add devlink_nl_put_u64() that abstracts padding for u64 values. All u64 values are passed with the very same padding option. Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Link: https://patch.msgid.link/20241023131248.27192-2-przemyslaw.kitszel@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Add devlink_nl_put_u64() that abstracts padding for u64 values.
All u64 values are passed with the very same padding option.

Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://patch.msgid.link/20241023131248.27192-2-przemyslaw.kitszel@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>