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| author | Parav Pandit <parav@nvidia.com> | 2020-12-12 09:12:17 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@nvidia.com> | 2021-01-22 22:32:08 +0300 |
| commit | 90d010b8634b89a97ca3b7aa6a88fd566fc77717 (patch) | |
| tree | 9519ed20f40fa436ca457fb424dfb50f6f5ca383 /include | |
| parent | f3196bb0f14c0ffb5089c15668bda196c98d3900 (diff) | |
| download | linux-90d010b8634b89a97ca3b7aa6a88fd566fc77717.tar.xz | |
net/mlx5: SF, Add auxiliary device support
Introduce API to add and delete an auxiliary device for an SF.
Each SF has its own dedicated window in the PCI BAR 2.
SF device is similar to PCI PF and VF that supports multiple class of
devices such as net, rdma and vdpa.
SF device will be added or removed in subsequent patch during SF
devlink port function state change command.
A subfunction device exposes user supplied subfunction number which will
be further used by systemd/udev to have deterministic name for its
netdevice and rdma device.
An mlx5 subfunction auxiliary device example:
$ devlink dev eswitch set pci/0000:06:00.0 mode switchdev
$ devlink port show
pci/0000:06:00.0/65535: type eth netdev ens2f0np0 flavour physical port 0 splittable false
$ devlink port add pci/0000:06:00.0 flavour pcisf pfnum 0 sfnum 88
pci/0000:08:00.0/32768: type eth netdev eth6 flavour pcisf controller 0 pfnum 0 sfnum 88 external false splittable false
function:
hw_addr 00:00:00:00:00:00 state inactive opstate detached
$ devlink port show ens2f0npf0sf88
pci/0000:06:00.0/32768: type eth netdev ens2f0npf0sf88 flavour pcisf controller 0 pfnum 0 sfnum 88 external false splittable false
function:
hw_addr 00:00:00:00:88:88 state inactive opstate detached
$ devlink port function set ens2f0npf0sf88 hw_addr 00:00:00:00:88:88 state active
On activation,
$ ls -l /sys/bus/auxiliary/devices/
mlx5_core.sf.4 -> ../../../devices/pci0000:00/0000:00:03.0/0000:06:00.0/mlx5_core.sf.4
$ cat /sys/bus/auxiliary/devices/mlx5_core.sf.4/sfnum
88
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Vu Pham <vuhuong@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mlx5/driver.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index ffba0786051e..08e5fbe97df0 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -508,6 +508,7 @@ struct mlx5_fw_reset; struct mlx5_eq_table; struct mlx5_irq_table; struct mlx5_vhca_state_notifier; +struct mlx5_sf_dev_table; struct mlx5_rate_limit { u32 rate; @@ -606,6 +607,7 @@ struct mlx5_priv { struct mlx5_uars_page *uar; #ifdef CONFIG_MLX5_SF struct mlx5_vhca_state_notifier *vhca_state_notifier; + struct mlx5_sf_dev_table *sf_dev_table; #endif }; |