mlx5ib(4)

mlx5ib4

Mellanox connectx-4 and connectx-4 lx based 100gb, 50gb, 40gb, 25gb and 10gb network adapter driver

Usage

To compile this driver into the kernel, place these lines in your kernel configuration file:

options COMPAT_LINUXKPI device mlx5 device mlx5ib

To load the driver as a module at run-time, run this command as root:

kldload mlx5ib

To load the driver as a module at boot time, place this line in loader.conf(5):

mlx5ib_load="YES"

Overview

The mlx5ib driver provides support for infiniband and Remote DMA over Converged Ethernet, RoCE, for PCI Express network adapters based on ConnectX-4 and ConnectX-4 LX.
For further hardware information and questions related to hardware requirements, see http://www.mellanox.com/.

For more information on configuring this device, see ifconfig(8).

Hardware

The mlx5ib driver supports 100Gb, 50Gb, 40Gb, 25Gb and 10Gb network adapters. ConnectX-4 supports: 10/20/25/40/50/56/100Gb/s speeds. ConnectX-4 LX supports: 10/25/40/50Gb/s speeds (and reduced power consumption):

  • Mellanox MCX455A-ECAT

  • Mellanox MCX456A-ECAT

  • Mellanox MCX415A-CCAT

  • Mellanox MCX416A-CCAT

  • Mellanox MCX455A-FCAT

  • Mellanox MCX456A-FCAT

  • Mellanox MCX415A-BCAT

  • Mellanox MCX416A-BCAT

  • Mellanox MCX4131A-GCAT

  • Mellanox MCX4131A-BCAT

  • Mellanox MCX4121A-ACAT

  • Mellanox MCX4111A-ACAT

  • Mellanox MCX4121A-XCAT

  • Mellanox MCX4111A-XCAT

Support

For general information and support, go to the Mellanox support website at: http://www.mellanox.com/.

If an issue is identified with this driver with a supported adapter, email all the specific information related to the issue to ⟨[email protected]⟩.

Releases

22 releases since FreeBSD 11.3-RELEASE; the text changed 9 times.

  1. 11.3
  2. 11.4
  3. 12.0
  4. 12.1
  5. 12.2
  6. 12.3
  7. 12.4
  8. 13.0–13.2
  9. 13.3–14.5
  10. 15.0–16.0

History

The mlx5ib device driver first appeared in FreeBSD 12.0.

Authors

The mlx5ib driver was written by Mellanox Technologies <[email protected]>.

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.