fa6662b368
This patch is a quick hack to change the internal Ethertype used within the chip. All frames with this type are dropped silently. This patch allows you to overwrite the factory default 0x88a8, which is used by IEEE 802.1ad VLAN stacking. Reviewed by: kp, philip, brueffer Approved by: kp (mentor) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D24179
305 lines
9.4 KiB
Groff
305 lines
9.4 KiB
Groff
.\" Copyright (c) 2013-2018, Intel Corporation
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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 are met:
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.\"
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.\" 1. Redistributions of source code must retain the above copyright notice,
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.\" this list of conditions and the following disclaimer.
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.\"
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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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.\" 3. Neither the name of the Intel Corporation nor the names of its
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.\" contributors may be used to endorse or promote products derived from
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.\" this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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.\" AND 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 THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" * Other names and brands may be claimed as the property of others.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 19, 2021
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.Dt IXL 4
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.Os
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.Sh NAME
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.Nm ixl
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.Nd "Intel Ethernet 700 Series Driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel, 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 "device iflib"
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.Cd "device ixl"
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.Ed
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.Pp
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To load the driver as a 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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if_ixl_load="YES"
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.Ed
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.Sh DESCRIPTION
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.Ss Features
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The
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.Nm
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driver provides support for any PCI Express adapter or LOM
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(LAN On Motherboard)
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in the Intel Ethernet 700 Series.
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As of this writing, the series includes devices with these model numbers:
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.Pp
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.Bl -bullet -compact
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.It
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XL710 (40G)
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.It
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X710 (10G)
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.It
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XXV710 (25G)
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.It
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X722 (10G)
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.El
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.Pp
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The driver supports Jumbo Frames, TX/RX checksum offload,
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TCP segmentation offload (TSO), Large Receive Offload (LRO), VLAN
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tag insertion/extraction, VLAN checksum offload, VLAN TSO, and
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Receive Side Steering (RSS), all for both IPv4 and IPv6.
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For further hardware information and questions related to hardware
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requirements, see
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.Lk http://support.intel.com/ .
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.Pp
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Support for Jumbo Frames is provided via the interface MTU setting.
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Selecting an MTU larger than 1500 bytes with the
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.Xr ifconfig 8
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utility configures the adapter to receive and transmit Jumbo Frames.
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The maximum MTU size for Jumbo Frames is 9706.
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.Pp
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Offloads are also controlled via the interface, for instance,
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checksumming for both IPv4 and IPv6 can be set and unset, TSO4
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and/or TSO6, and finally LRO can be set and unset.
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.Pp
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For more information on configuring this device, see
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.Xr ifconfig 8 .
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.Ss Additional Utilities
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There are additional tools available from Intel to help configure and update
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the adapters covered by this driver.
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These tools can be downloaded directly from Intel at
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.Lk https://downloadcenter.intel.com ,
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by searching for their names, or by installing certain packages:
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.Bl -bullet
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.It
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To change the behavior of the QSFP+ ports on XL710 adapters, use the
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Intel QCU (QSFP+ configuration utility); installed by the
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.Em sysutils/intel-qcu
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package.
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.It
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To update the firmware on an adapter, use the Intel Non-Volatile Memory (NVM)
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Update Utility; installed by the
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.Em sysutils/intel-nvmupdate
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package.
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.It
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Drivers are provided by Intel outside of the
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.Fx
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kernel; install the
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.Em net/intel-ixl-kmod
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package for the latest driver.
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.El
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.Sh HARDWARE
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Most adapters in the Intel Ethernet 700 Series with SFP+/SFP28/QSFP+ cages
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have firmware that requires that Intel qualified modules are used; these
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qualified modules are listed below.
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This qualification check cannot be disabled by the driver.
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.Pp
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The
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.Nm
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driver supports 40Gb Ethernet adapters with these QSFP+ modules:
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.Pp
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.Bl -bullet -compact
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.It
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Intel 4x10G/40G QSFP+ 40GBASE-SR4 E40GQSFPSR
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.It
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Intel 4x10G/40G QSFP+ 40GBASE-LR4 E40GQSFPLR
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.El
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.Pp
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The
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.Nm
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driver supports 25Gb Ethernet adapters with these SFP28 modules:
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.Pp
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.Bl -bullet -compact
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.It
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Intel 10G/25G SFP28 25GBASE-SR E25GSFP28SR
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.It
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Intel 10G/25G SFP28 25GBASE-SR E25GSFP28SRX (Extended Temp)
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.El
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.Pp
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The
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.Nm
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driver supports 25Gb and 10Gb Ethernet adapters with these SFP+ modules:
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.Pp
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.Bl -bullet -compact
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.It
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Intel 1G/10G SFP+ SR FTLX8571D3BCV-IT
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.It
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Intel 1G/10G SFP+ SR AFBR-703SDZ-IN2
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.It
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Intel 1G/10G SFP+ LR FTLX1471D3BCV-IT
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.It
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Intel 1G/10G SFP+ LR AFCT-701SDZ-IN2
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.It
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Intel 1G/10G SFP+ 10GBASE-SR E10GSFPSR
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.It
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Intel 10G SFP+ 10GBASE-SR E10GSFPSRX (Extended Temp)
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.It
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Intel 1G/10G SFP+ 10GBASE-LR E10GSFPLR
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.El
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.Pp
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Note that adapters also support all passive and active
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limiting direct attach cables that comply with SFF-8431 v4.1 and
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SFF-8472 v10.4 specifications.
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.Pp
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This is not an exhaustive list; please consult product documentation for an
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up-to-date list of supported media.
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.Sh LOADER TUNABLES
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Tunables can be set at the
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.Xr loader 8
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prompt before booting the kernel or stored in
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.Xr loader.conf 5 .
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.Bl -tag -width indent
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.It Va hw.ixl.rx_itr
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The RX interrupt rate value, set to 62 (124 usec) by default.
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.It Va hw.ixl.tx_itr
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The TX interrupt rate value, set to 122 (244 usec) by default.
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.It Va hw.ixl.i2c_access_method
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Access method that driver will use for I2C read and writes via
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.Xr sysctl 8
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or verbose
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.Xr ifconfig 8
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information display:
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.Bd -literal -offset indent
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0 - best available method
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1 - bit bang via I2CPARAMS register
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2 - register read/write via I2CCMD register
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3 - Use Admin Queue command (default best)
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.Ed
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.Pp
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Using the Admin Queue is only supported on 710 devices with FW version 1.7 or
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newer.
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Set to 0 by default.
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.It Va hw.ixl.enable_tx_fc_filter
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Filter out packets with Ethertype 0x8808 from being sent out by non-adapter
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sources.
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This prevents (potentially untrusted) software or
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.Xr iavf 4
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devices from sending out flow control packets and creating a DoS (Denial of
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Service) event.
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Enabled by default.
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.It Va hw.ixl.enable_head_writeback
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When the driver is finding the last TX descriptor processed by the hardware,
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use a value written to memory by the hardware instead of scanning the
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descriptor ring for completed descriptors.
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Enabled by default; disable to mimic the TX behavior found in
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.Xr ixgbe 4 .
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.El
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.Sh SYSCTL PROCEDURES
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.Bl -tag -width indent
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.It Va dev.ixl.#.fc
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Sets the 802.3x flow control mode that the adapter will advertise on the link.
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A value of 0 disables flow control, 3 enables full, 1 is RX, and 2 is TX pause.
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.Pp
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The negotiated flow control setting can be viewed in
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.Xr ifconfig 8 ,
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in the interface's media field.
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.It Va dev.ixl.#.advertise_speed
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Set the speeds that the interface will advertise on the link.
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.Va dev.ixl.#.supported_speeds
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contains the speeds that are allowed to be set.
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.It Va dev.ixl.#.current_speed
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Displays the current speed.
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.It Va dev.ixl.#.fw_version
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Displays the current firmware and NVM versions of the adapter.
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.It Va dev.ixl.#.debug.switch_vlans
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Set the Ethertype used by the hardware itself to handle internal
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services.
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Frames with this Ethertype will be dropped without notice.
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Defaults to
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.Dv 0x88a8 ,
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which is a well known number for IEEE 802.1ad VLAN stacking.
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If you need 802.1ad support, set this number to any another Ethertype i.e.
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.Dv 0xffff .
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.El
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.Sh INTERRUPT STORMS
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It is important to note that 40G operation can generate high
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numbers of interrupts, often incorrectly being interpreted as
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a storm condition in the kernel.
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It is suggested that this be resolved by setting:
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.Bl -tag -width indent
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.It Va hw.intr_storm_threshold: 0
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.El
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.Sh IOVCTL OPTIONS
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The driver supports additional optional parameters for created VFs
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(Virtual Functions) when using
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.Xr iovctl 8 :
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.Bl -tag -width indent
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.It mac-addr Pq unicast-mac
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Set the Ethernet MAC address that the VF will use.
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If unspecified, the VF will use a randomly generated MAC address.
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.It mac-anti-spoof Pq bool
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Prevent the VF from sending Ethernet frames with a source address
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that does not match its own.
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.It allow-set-mac Pq bool
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Allow the VF to set its own Ethernet MAC address
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.It allow-promisc Pq bool
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Allow the VF to inspect all of the traffic sent to the port.
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.It num-queues Pq uint16_t
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Specify the number of queues the VF will have.
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By default, this is set to the number of MSI-X vectors supported by the VF
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minus one.
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.El
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.Pp
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An up to date list of parameters and their defaults can be found by using
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.Xr iovctl 8
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with the -S option.
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.Sh SUPPORT
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For general information and support,
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go to the Intel support website at:
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.Lk http://support.intel.com/ .
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.Pp
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If an issue is identified with this driver with a supported adapter,
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email all the specific information related to the issue to
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.Mt freebsd@intel.com .
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.Sh SEE ALSO
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.Xr arp 4 ,
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.Xr iavf 4 ,
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.Xr iflib 4 ,
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.Xr netintro 4 ,
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.Xr vlan 4 ,
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.Xr ifconfig 8 ,
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.Xr iovctl 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 10.1 .
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It was converted to use
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.Xr iflib 9
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in
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.Fx 12 .
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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 Jack Vogel Aq Mt jfv@freebsd.org
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and
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.An Eric Joyner Aq Mt erj@freebsd.org .
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