mlx5 devlink support¶

This document describes the devlink features implemented by the mlx5 device driver.

Parameters¶

Generic parameters implemented¶
Name	Mode	Validation
`enable_roce`	driverinit	Type: Boolean
`io_eq_size`	driverinit	The range is between 64 and 4096.
`event_eq_size`	driverinit	The range is between 64 and 4096.
`max_macs`	driverinit	The range is between 1 and 2^31. Only power of 2 values are supported.

The mlx5 driver also implements the following driver-specific parameters.

Driver-specific parameters implemented¶
Name	Type	Mode	Description
`flow_steering_mode`	string	runtime	Controls the flow steering mode of the driver `dmfs` Device managed flow steering. In DMFS mode, the HW steering entities are created and managed through firmware. `smfs` Software managed flow steering. In SMFS mode, the HW steering entities are created and manage through the driver without firmware intervention.
`fdb_large_groups`	u32	driverinit	Control the number of large groups (size > 1) in the FDB table. The default value is 15, and the range is between 1 and 1024.

The mlx5 driver supports reloading via DEVLINK_CMD_RELOAD

The mlx5 driver reports the following versions

devlink info versions implemented¶
Name	Type	Description
`fw.psid`	fixed	Used to represent the board id of the device.
`fw.version`	stored, running	Three digit major.minor.subminor firmware version number.