MLX5EN(4) FreeBSD Kernel Interfaces Manual MLX5EN(4)
NAME
mlx5en - NVIDIA Mellanox ConnectX-4/5/6 [Dx/Ex/Lx] based 200Gb, 100Gb,
50Gb, 40Gb, 25Gb and 10Gb ethernet adapter driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
options COMPAT_LINUXKPI
options RATELIMIT
options KERN_TLS
device xz
device mlxfw
device firmware
device mlx5
device mlx5en
To load the driver as a module at run-time, run the following command as
root:
kldload mlx5en
To load the driver as a module at boot time, place the following lines in
loader.conf(5):
mlx5en_load="YES"
DESCRIPTION
The mlx5en driver provides support for PCI Express Ethernet adapters
based on ConnectX-4/5/6 [Dx, Ex and Lx variants]. The driver supports
Jumbo Frames, Transmit and Receive checksum offload, TCP segmentation
offload (TSO), Large Receive Offload (LRO), HW Large Receive Offload (HW
LRO), VLAN tag insertion and extraction, VLAN checksum offload, VLAN TSO,
hardware rate limiting (TXRTLMT), stateless VxLAN hardware offload for
receive and transmit, HW TLS offload for transmit, Receive Side Steering
(RSS) and numa(4) awareness.
The network interface name is mce<N> which corresponds to a PCI function,
mlx_core<N>, where <N> is a number starting at zero. There is at most
one network interface per PCI function.
For further information and questions related to hardware requirements,
see https://www.mellanox.com.
HARDWARE
The mlx5en driver supports 200Gb, 100Gb, 50Gb, 40Gb, 25Gb and 10Gb
ethernet adapters.
o ConnectX-6 supports 10/20/25/40/50/56/100Gb/200Gb/s speeds.
o ConnectX-5 supports 10/20/25/40/50/56/100Gb/s speeds.
o ConnectX-4 supports 10/20/25/40/50/56/100Gb/s speeds.
o ConnectX-4 LX supports 10/25/40/50Gb/s speeds and reduced power
consumption.
CONFIGURATION
The mlx5en network interface is configured using ifconfig(8) and the
sysctl(8) tree at dev.mce.<N>. All configurable entries are also
tunables, and can be put directly into the loader.conf(5) for persistent
configuration.
SUPPORT
For general information and support, go to the NVIDIA Mellanox networking
support website at: https://www.mellanox.com.
If an issue is identified with this driver using a supported adapter, e-
mail all the specific information related to the issue to
<
[email protected]>.
SEE ALSO
ifconfig(8)
HISTORY
The mlx5en device driver first appeared in FreeBSD 11.0.
AUTHORS
The mlx5en driver was written by NVIDIA Mellanox networking
<
[email protected]>.
FreeBSD 14.1-RELEASE-p8 July 20, 2021 FreeBSD 14.1-RELEASE-p8