linux.git/net/devlink/resource.c, branch v7.1-rc2 Linux kernel source tree devlink: Add resource scope filtering to resource dump 2026-04-09T02:55:39+00:00 Or Har-Toov ohartoov@nvidia.com 2026-04-07T19:41:05+00:00 1bc45341a6ea4009ee9f2fbca9096b33a9ef71a2 Allow filtering the resource dump to device-level or port-level resources using the 'scope' option. Example - dump only device-level resources: $ devlink resource show scope dev pci/0000:03:00.0: name max_local_SFs size 128 unit entry dpipe_tables none name max_external_SFs size 128 unit entry dpipe_tables none pci/0000:03:00.1: name max_local_SFs size 128 unit entry dpipe_tables none name max_external_SFs size 128 unit entry dpipe_tables none Example - dump only port-level resources: $ devlink resource show scope port pci/0000:03:00.0/196608: name max_SFs size 128 unit entry dpipe_tables none pci/0000:03:00.0/196609: name max_SFs size 128 unit entry dpipe_tables none pci/0000:03:00.1/196708: name max_SFs size 128 unit entry dpipe_tables none pci/0000:03:00.1/196709: name max_SFs size 128 unit entry dpipe_tables none 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/20260407194107.148063-11-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Allow filtering the resource dump to device-level or port-level
resources using the 'scope' option.

Example - dump only device-level resources:

  $ devlink resource show scope dev
  pci/0000:03:00.0:
    name max_local_SFs size 128 unit entry dpipe_tables none
    name max_external_SFs size 128 unit entry dpipe_tables none
  pci/0000:03:00.1:
    name max_local_SFs size 128 unit entry dpipe_tables none
    name max_external_SFs size 128 unit entry dpipe_tables none

Example - dump only port-level resources:

  $ devlink resource show scope port
  pci/0000:03:00.0/196608:
    name max_SFs size 128 unit entry dpipe_tables none
  pci/0000:03:00.0/196609:
    name max_SFs size 128 unit entry dpipe_tables none
  pci/0000:03:00.1/196708:
    name max_SFs size 128 unit entry dpipe_tables none
  pci/0000:03:00.1/196709:
    name max_SFs size 128 unit entry dpipe_tables none

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/20260407194107.148063-11-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: Add port-specific option to resource dump doit 2026-04-09T02:55:39+00:00 Or Har-Toov ohartoov@nvidia.com 2026-04-07T19:41:02+00:00 7511ff14f30d264691ec493b09111404aed4aaf4 Allow querying devlink resources per-port via the resource-dump doit handler. When a port-index attribute is provided, only that port's resources are returned. When no port-index is given, only device-level resources are returned, preserving backward compatibility. 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/20260407194107.148063-8-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Allow querying devlink resources per-port via the resource-dump doit
handler. When a port-index attribute is provided, only that port's
resources are returned. When no port-index is given, only device-level
resources are returned, preserving backward compatibility.

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/20260407194107.148063-8-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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: Add dump support for device-level resources 2026-04-09T02:55:38+00:00 Or Har-Toov ohartoov@nvidia.com 2026-04-07T19:41:00+00:00 11636b550eea9e480fe4ceec8ab7bd8f24b363da Add dumpit handler for resource-dump command to iterate over all devlink devices and show their resources. $ devlink resource show pci/0000:08:00.0: name local_max_SFs size 508 unit entry name external_max_SFs size 508 unit entry pci/0000:08:00.1: name local_max_SFs size 508 unit entry name external_max_SFs size 508 unit entry 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/20260407194107.148063-6-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Add dumpit handler for resource-dump command to iterate over all devlink
devices and show their resources.

  $ devlink resource show
  pci/0000:08:00.0:
    name local_max_SFs size 508 unit entry
    name external_max_SFs size 508 unit entry
  pci/0000:08:00.1:
    name local_max_SFs size 508 unit entry
    name external_max_SFs size 508 unit entry

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/20260407194107.148063-6-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: Add port-level resource registration infrastructure 2026-04-09T02:55:38+00:00 Or Har-Toov ohartoov@nvidia.com 2026-04-07T19:40:57+00:00 6f38acfed5edb398201d9ff127919745cbb331a1 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> 
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>
devlink: Refactor resource functions to be generic 2026-04-09T02:55:38+00:00 Or Har-Toov ohartoov@nvidia.com 2026-04-07T19:40:56+00:00 7be3163c49b24bf923d32f333096963159e03a14 Currently the resource functions take devlink pointer as parameter and take the resource list from there. Allow resource functions to work with other resource lists that will be added in next patches and not only with the devlink's resource list. 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/20260407194107.148063-2-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Currently the resource functions take devlink pointer as parameter
and take the resource list from there.
Allow resource functions to work with other resource lists that will
be added in next patches and not only with the devlink's resource list.

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/20260407194107.148063-2-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-22T01:09:51+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-22T00:37:42+00:00 bf4afc53b77aeaa48b5409da5c8da6bb4eff7f43 This was done entirely with mindless brute force, using git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' | xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/' to convert the new alloc_obj() users that had a simple GFP_KERNEL argument to just drop that argument. Note that due to the extreme simplicity of the scripting, any slightly more complex cases spread over multiple lines would not be triggered: they definitely exist, but this covers the vast bulk of the cases, and the resulting diff is also then easier to check automatically. For the same reason the 'flex' versions will be done as a separate conversion. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
This was done entirely with mindless brute force, using

    git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21T09:02:28+00:00 Kees Cook kees@kernel.org 2026-02-21T07:49:23+00:00 69050f8d6d075dc01af7a5f2f550a8067510366f This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org> 
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook <kees@kernel.org>
devlink: remove unused devlink_resource_register() 2024-10-29T23:52:57+00:00 Przemek Kitszel przemyslaw.kitszel@intel.com 2024-10-23T13:09:07+00:00 e3302f9a503a632c125170dc3c72b2886a910b0a Remove unused devlink_resource_register(); all the drivers use devl_resource_register() variant instead. 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/20241023131248.27192-8-przemyslaw.kitszel@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Remove unused devlink_resource_register(); all the drivers use
devl_resource_register() variant instead.

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/20241023131248.27192-8-przemyslaw.kitszel@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
devlink: remove unused devlink_resource_occ_get_register() and _unregister() 2024-10-29T23:52:57+00:00 Przemek Kitszel przemyslaw.kitszel@intel.com 2024-10-23T13:09:06+00:00 2a0df10434ddeb8b5b5aded90a5659aff3b106d7 Remove not used devlink_resource_occ_get_register() and devlink_resource_occ_get_unregister() functions; current devlink resource users are fine with devl_ variants of the two. 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/20241023131248.27192-7-przemyslaw.kitszel@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Remove not used devlink_resource_occ_get_register() and
devlink_resource_occ_get_unregister() functions; current devlink resource
users are fine with devl_ variants of the two.

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/20241023131248.27192-7-przemyslaw.kitszel@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>