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MLX5EN(4) 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 func- tion, 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 eth- ernet adapters. • ConnectX-6 supports 10/20/25/40/50/56/100Gb/200Gb/s speeds. • ConnectX-5 supports 10/20/25/40/50/56/100Gb/s speeds. • 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. CONFIGURATION The mlx5en network interface is configured using ifconfig(8) and the sysctl(8) tree at dev.mce.<N>. All configurable entries are also tun- ables, and can be put directly into the loader.conf(5) for persistent configuration. SUPPORT For general information and support, go to the NVIDIA Mellanox network- ing 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 <nbu-freebsd-drivers@nvidia.com>. 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 <nbu-freebsd-drivers@nvidia.com>. FreeBSD 14.3 July 20, 2021 MLX5EN(4)
NAME | SYNOPSIS | DESCRIPTION | HARDWARE | CONFIGURATION | SUPPORT | SEE ALSO | HISTORY | AUTHORS
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