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| author | Jiri Pirko <jiri@nvidia.com> | 2026-03-12 13:04:07 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-14 23:08:51 +0300 |
| commit | 2a8c8a03f306e21a0ea74c93d4332119557f4575 (patch) | |
| tree | 5fb34a4e749566fe020860e27af0a0938c999992 /include/linux | |
| parent | 63fff8c0f7025a838f1afab5fc8e6ad989e4823e (diff) | |
| download | linux-2a8c8a03f306e21a0ea74c93d4332119557f4575.tar.xz | |
net/mlx5: Add a shared devlink instance for PFs on same chip
Use the previously introduced shared devlink infrastructure to create
a shared devlink instance for mlx5 PFs that reside on the same physical
chip. The shared instance is identified by the chip's serial number
extracted from PCI VPD (V3 keyword, with fallback to serial number
for older devices).
Each PF that probes calls mlx5_shd_init() which extracts the chip serial
number and uses devlink_shd_get() to get or create the shared instance.
When a PF is removed, mlx5_shd_uninit() calls devlink_shd_put()
to release the reference. The shared instance is automatically destroyed
when the last PF is removed.
Make the PF devlink instances nested in this shared devlink instance,
allowing userspace to identify which PFs belong to the same physical
chip.
Example:
pci/0000:08:00.0: index 0
nested_devlink:
auxiliary/mlx5_core.eth.0
devlink_index/1: index 1
nested_devlink:
pci/0000:08:00.0
pci/0000:08:00.1
auxiliary/mlx5_core.eth.0: index 2
pci/0000:08:00.1: index 3
nested_devlink:
auxiliary/mlx5_core.eth.1
auxiliary/mlx5_core.eth.1: index 4
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260312100407.551173-14-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mlx5/driver.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 04dcd09f7517..1268fcf35ec7 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -798,6 +798,7 @@ struct mlx5_core_dev { enum mlx5_wc_state wc_state; /* sync write combining state */ struct mutex wc_state_lock; + struct devlink *shd; }; struct mlx5_db { |