User Manual

Rev 2.0-3.0.0

Mellanox Technologies

The example above loads the driver with 5 VFs (num_vfs). The standard use of a VF is a single VF

per a single VM. However, the number of VFs varies upon the working mode requirements.

The protocol types are:

• Port 1 = IB

• Port 2 = Ethernet

• port_type_array=2,2 (Ethernet, Ethernet)

• port_type_array=1,1 (IB, IB)

• port_type_array=1,2 (VPI: IB, Ethernet)

• NO port_type_array module parameter: ports are IB

Step 9.

Reboot the server.

port_type_array Specifies the protocol type of the ports. It is either one array

of 2 port types

't1,t2' for all devices or list of BDF to

port_type_array 'bb:dd.f-t1;t2,...'. (string)

probe_vf Absent, or zero:

• No VFs will be used by the PF driver

• Its value is a single number in the range of 0-63. Physical Func-

tion driver will use

probe_vf VFs and this will be applied to

all ConnectX® HCAs on the host.

• Its format is a string which allows the user to specify the

probe_vf parameter separately per installed HCA.

• Its format is: "bb:dd.f-v,bb:dd.f-v,…

• bb:dd.f = bus:device.function of the PF of the HCA

• v = number of VFs to use in the PF driver for that HCA

This parameter can be set in one of the following ways. For

example:

• probe_vfs=5 - The PF driver will probe 5 VFs on the HCA

and this will be applied to all ConnectX® HCAs on the host

•

probe_vfs=00:04.0-5,00:07.0-8 - The PF driver will

probe 5 VFs on the HCA positioned in BDF 00:04.0 and 8 for

the one in 00:07.0)

Note: PFs not included in the above list will not use any of

their VFs in the PF driver.

If the SR-IOV is not supported by the server, the machine might not come out of boot/

load.

Parameter Recommended Value