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net/mlx5: Use software VHCA id when it's supported

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Use software VHCA id when it's supported by the firmware.

A unique id is allocated upon mlx5_mdev_init() and freed upon
mlx5_mdev_uninit(), as such it stays the same during the full life cycle
of the device including upon health recovery if occurred.

The conjunction of sw_vhca_id with sw_owner_id will be a global unique
id per function which uses mlx5_core.

The sw_vhca_id is set upon init_hca command and is used to specify the
VHCA that the NIC vport is affiliated with.

This functionality is needed upon migration of VM which is MPV based.
(i.e. multi port device).

Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Yishai Hadas 2022-06-02 12:47:34 +03:00 • committed by Saeed Mahameed
parent 0372c546ec
commit dc402ccc0d
4 changed files with 65 additions and 3 deletions
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1
include/linux/mlx5/driver.h
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@ -610,6 +610,7 @@ struct mlx5_priv {
spinlock_t ctx_lock;
struct mlx5_adev **adev;
int adev_idx;
int sw_vhca_id;
struct mlx5_events *events;
struct mlx5_flow_steering *steering;