575945f10b
Differential Revision: https://reviews.freebsd.org/D31228 Reviewed by: kib@ MFC after: 1 week Sponsored by: NVIDIA Networking
135 lines
4.1 KiB
Groff
135 lines
4.1 KiB
Groff
.\" Copyright (c) 2015 Mellanox Technologies
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.\" Copyright (c) 2021 NVIDIA corporation & affiliates
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 20, 2021
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.Dt MLX5EN 4
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.Os
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.Sh NAME
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.Nm mlx5en
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.Nd "NVIDIA Mellanox ConnectX-4/5/6 [Dx/Ex/Lx] based 200Gb, 100Gb, 50Gb, 40Gb, 25Gb and 10Gb ethernet adapter driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "options COMPAT_LINUXKPI"
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.Cd "options RATELIMIT"
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.Cd "options KERN_TLS"
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.Cd "device xz"
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.Cd "device mlxfw"
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.Cd "device firmware"
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.Cd "device mlx5"
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.Cd "device mlx5en"
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.Ed
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.Pp
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To load the driver as a module at run-time,
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run the following command as root:
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.Bd -literal -offset indent
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kldload mlx5en
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.Ed
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.Pp
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To load the driver as a
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module at boot time, place the following lines in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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mlx5en_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for PCI Express Ethernet adapters based on
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ConnectX-4/5/6 [Dx, Ex and Lx variants].
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The driver supports Jumbo Frames, Transmit and Receive checksum offload,
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TCP segmentation offload (TSO), Large Receive Offload (LRO),
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HW Large Receive Offload (HW LRO), VLAN tag insertion and extraction,
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VLAN checksum offload, VLAN TSO, hardware rate limiting (TXRTLMT),
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stateless VxLAN hardware offload for receive and transmit,
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HW TLS offload for transmit, Receive Side Steering (RSS) and
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.Xr NUMA 4
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awareness.
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.Pp
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The network interface name is
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.Dv mce<N>
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which corresponds to a PCI function,
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.Dv mlx_core<N> ,
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where
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.Dv <N>
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is a number starting at zero.
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There is at most one network interface per PCI function.
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.Pp
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For further information and questions related to hardware
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requirements, see
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.Pa https://www.mellanox.com .
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.Sh HARDWARE
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The
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.Nm
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driver supports 200Gb, 100Gb, 50Gb, 40Gb, 25Gb and 10Gb ethernet adapters.
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.Bl -bullet -compact
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.Pp
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.It
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ConnectX-6 supports 10/20/25/40/50/56/100Gb/200Gb/s speeds.
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.It
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ConnectX-5 supports 10/20/25/40/50/56/100Gb/s speeds.
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.It
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ConnectX-4 supports 10/20/25/40/50/56/100Gb/s speeds.
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.It
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ConnectX-4 LX supports 10/25/40/50Gb/s speeds and reduced power consumption.
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.El
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.Sh CONFIGURATION
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The
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.Nm
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network interface is configured using
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.Xr ifconfig 8
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and the
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.Xr sysctl 8
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tree at
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.Dv dev.mce.<N> .
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All configurable entries are also tunables, and can be put directly into the
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.Xr loader.conf 5
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for persistent configuration.
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.Sh SUPPORT
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For general information and support,
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go to the NVIDIA Mellanox networking support website at:
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.Pa https://www.mellanox.com .
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.Pp
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If an issue is identified with this driver using a supported adapter,
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e-mail all the specific information related to the issue to
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.Aq Mt nbu-freebsd-drivers@nvidia.com .
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.Sh SEE ALSO
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.Xr ifconfig 8
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Fx 11.0 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An NVIDIA Mellanox networking <nbu-freebsd-drivers@nvidia.com> .
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