diff options
| author | Cosmin Ratiu <cratiu@nvidia.com> | 2026-07-01 10:32:45 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-07-07 11:31:26 +0200 |
| commit | b5f90fd4580ce71aa24ac9afcf5c9b4fa8121518 (patch) | |
| tree | 01c8047ef19d74579d7ed2448625aebc0d07ed66 /Documentation/netlink | |
| parent | db078bc2b03157648ef901f4f78a23586777b184 (diff) | |
devlink: Add parent dev to devlink API
Upcoming changes to the rate commands need the parent devlink specified.
This change adds a nested 'parent-dev' attribute to the API and helpers
to obtain and put a reference to the parent devlink instance in
info->ctx.
To avoid deadlocks, the parent devlink is unlocked before obtaining the
main devlink instance that is the target of the request.
A reference to the parent is kept until the end of the request to avoid
it suddenly disappearing.
This means that this reference is of limited use without additional
protection.
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/20260701073254.754518-6-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'Documentation/netlink')
| -rw-r--r-- | Documentation/netlink/specs/devlink.yaml | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/netlink/specs/devlink.yaml b/Documentation/netlink/specs/devlink.yaml index 52ad1e7805d1..13d960b3abb1 100644 --- a/Documentation/netlink/specs/devlink.yaml +++ b/Documentation/netlink/specs/devlink.yaml @@ -895,6 +895,16 @@ attribute-sets: resource-dump response. Bit 0 (dev) selects device-level resources; bit 1 (port) selects port-level resources. When absent all classes are returned. + - + name: parent-dev + type: nest + nested-attributes: dl-parent-dev + doc: | + Identifies the devlink instance which owns the parent rate node. + Used with rate-set and rate-new to parent a rate object to a node on + a different devlink instance, enabling cross-device rate scheduling. + When absent, the parent node is resolved on the same instance. + - name: dl-dev-stats subset-of: devlink @@ -1317,6 +1327,16 @@ attribute-sets: Specifies the bandwidth share assigned to the Traffic Class. The bandwidth for the traffic class is determined in proportion to the sum of the shares of all configured classes. + - + name: dl-parent-dev + subset-of: devlink + attributes: + - + name: bus-name + - + name: dev-name + - + name: index operations: enum-model: directional |