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 /include/uapi | |
| 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 'include/uapi')
| -rw-r--r-- | include/uapi/linux/devlink.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index ca713bcc47b9..a6801feb7744 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -648,6 +648,8 @@ enum devlink_attr { DEVLINK_ATTR_INDEX, /* uint */ DEVLINK_ATTR_RESOURCE_SCOPE_MASK, /* u32 */ + DEVLINK_ATTR_PARENT_DEV, /* nested */ + /* Add new attributes above here, update the spec in * Documentation/netlink/specs/devlink.yaml and re-generate * net/devlink/netlink_gen.c. |