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-<table class="head">
- <tr>
- <td class="head-ltitle">IXL(4)</td>
- <td class="head-vol">Device Drivers Manual</td>
- <td class="head-rtitle">IXL(4)</td>
- </tr>
-</table>
-<div class="manual-text">
-<section class="Sh">
-<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-<p class="Pp"><code class="Nm">ixl</code> &#x2014; <span class="Nd">Intel
- Ethernet 700 Series Driver</span></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
-<p class="Pp">To compile this driver into the kernel, place the following lines
- in your kernel configuration file:</p>
-<div class="Bd Pp Bd-indent"><code class="Cd">device iflib</code>
-<br/>
-<code class="Cd">device ixl</code></div>
-<p class="Pp">To load the driver as a module at boot time, place the following
- lines in <a class="Xr">loader.conf(5)</a>:</p>
-<div class="Bd Pp Bd-indent Li">
-<pre>if_ixl_load=&quot;YES&quot;</pre>
-</div>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-<section class="Ss">
-<h2 class="Ss" id="Features"><a class="permalink" href="#Features">Features</a></h2>
-<p class="Pp">The <code class="Nm">ixl</code> driver provides support for any
- PCI Express adapter or LOM (LAN On Motherboard) in the Intel Ethernet 700
- Series. As of this writing, the series includes devices with these model
- numbers:</p>
-<p class="Pp"></p>
-<ul class="Bl-bullet Bl-compact">
- <li>XL710 (40G)</li>
- <li>X710 (10G)</li>
- <li>XXV710 (25G)</li>
- <li>X722 (10G)</li>
-</ul>
-<p class="Pp">The driver supports Jumbo Frames, TX/RX checksum offload, TCP
- segmentation offload (TSO), Large Receive Offload (LRO), VLAN tag
- insertion/extraction, VLAN checksum offload, VLAN TSO, and Receive Side
- Steering (RSS), all for both IPv4 and IPv6. For further hardware information
- and questions related to hardware requirements, see
- <a class="Lk" href="http://support.intel.com/">http://support.intel.com/</a>.</p>
-<p class="Pp">Support for Jumbo Frames is provided via the interface MTU
- setting. Selecting an MTU larger than 1500 bytes with the
- <a class="Xr">ifconfig(8)</a> utility configures the adapter to receive and
- transmit Jumbo Frames. The maximum MTU size for Jumbo Frames is 9706.</p>
-<p class="Pp">Offloads are also controlled via the interface, for instance,
- checksumming for both IPv4 and IPv6 can be set and unset, TSO4 and/or TSO6,
- and finally LRO can be set and unset.</p>
-<p class="Pp">For more information on configuring this device, see
- <a class="Xr">ifconfig(8)</a>.</p>
-</section>
-<section class="Ss">
-<h2 class="Ss" id="Additional_Utilities"><a class="permalink" href="#Additional_Utilities">Additional
- Utilities</a></h2>
-<p class="Pp">There are additional tools available from Intel to help configure
- and update the adapters covered by this driver. These tools can be
- downloaded directly from Intel at
- <a class="Lk" href="https://downloadcenter.intel.com">https://downloadcenter.intel.com</a>,
- by searching for their names, or by installing certain packages:</p>
-<ul class="Bl-bullet">
- <li id="sysutils/intel-qcu">To change the behavior of the QSFP+ ports on XL710
- adapters, use the Intel QCU (QSFP+ configuration utility); installed by
- the
- <a class="permalink" href="#sysutils/intel-qcu"><i class="Em">sysutils/intel-qcu</i></a>
- package.</li>
- <li id="sysutils/intel-nvmupdate-10g">To update the firmware on an adapter,
- use the Intel Non-Volatile Memory (NVM) Update Utility; installed by the
- <a class="permalink" href="#sysutils/intel-nvmupdate-10g"><i class="Em">sysutils/intel-nvmupdate-10g</i></a>,
- <a class="permalink" href="#sysutils/intel-nvmupdate-40g"><i class="Em" id="sysutils/intel-nvmupdate-40g">sysutils/intel-nvmupdate-40g</i></a>,
- or
- <a class="permalink" href="#sysutils/intel-nvmupdate-100g"><i class="Em" id="sysutils/intel-nvmupdate-100g">sysutils/intel-nvmupdate-100g</i></a>,
- package.</li>
- <li id="net/intel-ixl-kmod">Drivers are provided by Intel outside of the
- <span class="Ux">FreeBSD</span> kernel; install the
- <a class="permalink" href="#net/intel-ixl-kmod"><i class="Em">net/intel-ixl-kmod</i></a>
- package for the latest driver.</li>
-</ul>
-</section>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="HARDWARE"><a class="permalink" href="#HARDWARE">HARDWARE</a></h1>
-<p class="Pp">The <code class="Nm">ixl</code> driver supports the Intel Ethernet
- 700 series. Most adapters in this series with SFP+/SFP28/QSFP+ cages have
- firmware that requires that Intel qualified modules are used; these
- qualified modules are listed below. This qualification check cannot be
- disabled by the driver.</p>
-<p class="Pp">The <code class="Nm">ixl</code> driver supports 40Gb Ethernet
- adapters with these QSFP+ modules:</p>
-<p class="Pp"></p>
-<ul class="Bl-bullet Bl-compact">
- <li>Intel 4x10G/40G QSFP+ 40GBASE-SR4 E40GQSFPSR</li>
- <li>Intel 4x10G/40G QSFP+ 40GBASE-LR4 E40GQSFPLR</li>
-</ul>
-<p class="Pp">The <code class="Nm">ixl</code> driver supports 25Gb Ethernet
- adapters with these SFP28 modules:</p>
-<p class="Pp"></p>
-<ul class="Bl-bullet Bl-compact">
- <li>Intel 10G/25G SFP28 25GBASE-SR E25GSFP28SR</li>
- <li>Intel 10G/25G SFP28 25GBASE-SR E25GSFP28SRX (Extended Temp)</li>
-</ul>
-<p class="Pp">The <code class="Nm">ixl</code> driver supports 25Gb and 10Gb
- Ethernet adapters with these SFP+ modules:</p>
-<p class="Pp"></p>
-<ul class="Bl-bullet Bl-compact">
- <li>Intel 1G/10G SFP+ SR FTLX8571D3BCV-IT</li>
- <li>Intel 1G/10G SFP+ SR AFBR-703SDZ-IN2</li>
- <li>Intel 1G/10G SFP+ LR FTLX1471D3BCV-IT</li>
- <li>Intel 1G/10G SFP+ LR AFCT-701SDZ-IN2</li>
- <li>Intel 1G/10G SFP+ 10GBASE-SR E10GSFPSR</li>
- <li>Intel 10G SFP+ 10GBASE-SR E10GSFPSRX (Extended Temp)</li>
- <li>Intel 1G/10G SFP+ 10GBASE-LR E10GSFPLR</li>
-</ul>
-<p class="Pp">Note that adapters also support all passive and active limiting
- direct attach cables that comply with SFF-8431 v4.1 and SFF-8472 v10.4
- specifications.</p>
-<p class="Pp">This is not an exhaustive list; please consult product
- documentation for an up-to-date list of supported media.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="LOADER_TUNABLES"><a class="permalink" href="#LOADER_TUNABLES">LOADER
- TUNABLES</a></h1>
-<p class="Pp">Tunables can be set at the <a class="Xr">loader(8)</a> prompt
- before booting the kernel or stored in <a class="Xr">loader.conf(5)</a>.</p>
-<dl class="Bl-tag">
- <dt id="hw.ixl.rx_itr"><var class="Va">hw.ixl.rx_itr</var></dt>
- <dd>The RX interrupt rate value, set to 62 (124 usec) by default.</dd>
- <dt id="hw.ixl.tx_itr"><var class="Va">hw.ixl.tx_itr</var></dt>
- <dd>The TX interrupt rate value, set to 122 (244 usec) by default.</dd>
- <dt id="hw.ixl.i2c_access_method"><var class="Va">hw.ixl.i2c_access_method</var></dt>
- <dd>Access method that driver will use for I2C read and writes via
- <a class="Xr">sysctl(8)</a> or verbose <a class="Xr">ifconfig(8)</a>
- information display:
- <div class="Bd Pp Bd-indent Li">
- <pre>0 - best available method
-1 - bit bang via I2CPARAMS register
-2 - register read/write via I2CCMD register
-3 - Use Admin Queue command (default best)</pre>
- </div>
- <p class="Pp">Using the Admin Queue is only supported on 710 devices with FW
- version 1.7 or newer. Set to 0 by default.</p>
- </dd>
- <dt id="hw.ixl.enable_tx_fc_filter"><var class="Va">hw.ixl.enable_tx_fc_filter</var></dt>
- <dd>Filter out packets with Ethertype 0x8808 from being sent out by
- non-adapter sources. This prevents (potentially untrusted) software or
- <a class="Xr">iavf(4)</a> devices from sending out flow control packets
- and creating a DoS (Denial of Service) event. Enabled by default.</dd>
- <dt id="hw.ixl.enable_head_writeback"><var class="Va">hw.ixl.enable_head_writeback</var></dt>
- <dd>When the driver is finding the last TX descriptor processed by the
- hardware, use a value written to memory by the hardware instead of
- scanning the descriptor ring for completed descriptors. Enabled by
- default; disable to mimic the TX behavior found in
- <a class="Xr">ix(4)</a>.</dd>
-</dl>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SYSCTL_PROCEDURES"><a class="permalink" href="#SYSCTL_PROCEDURES">SYSCTL
- PROCEDURES</a></h1>
-<dl class="Bl-tag">
- <dt id="dev.ixl._.fc"><var class="Va">dev.ixl.#.fc</var></dt>
- <dd>Sets the 802.3x flow control mode that the adapter will advertise on the
- link. A value of 0 disables flow control, 3 enables full, 1 is RX, and 2
- is TX pause.
- <p class="Pp">The negotiated flow control setting can be viewed in
- <a class="Xr">ifconfig(8)</a>, in the interface's media field.</p>
- </dd>
- <dt id="dev.ixl._.advertise_speed"><var class="Va">dev.ixl.#.advertise_speed</var></dt>
- <dd>Set the speeds that the interface will advertise on the link.
- <var class="Va">dev.ixl.#.supported_speeds</var> contains the speeds that
- are allowed to be set.</dd>
- <dt id="dev.ixl._.current_speed"><var class="Va">dev.ixl.#.current_speed</var></dt>
- <dd>Displays the current speed.</dd>
- <dt id="dev.ixl._.fw_version"><var class="Va">dev.ixl.#.fw_version</var></dt>
- <dd>Displays the current firmware and NVM versions of the adapter.</dd>
- <dt id="dev.ixl._.debug.switch_vlans"><var class="Va">dev.ixl.#.debug.switch_vlans</var></dt>
- <dd>Set the Ethertype used by the hardware itself to handle internal services.
- Frames with this Ethertype will be dropped without notice. Defaults to
- <code class="Dv">0x88a8</code>, which is a well known number for IEEE
- 802.1ad VLAN stacking. If you need 802.1ad support, set this number to any
- another Ethertype i.e. <code class="Dv">0xffff</code>.</dd>
-</dl>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="INTERRUPT_STORMS"><a class="permalink" href="#INTERRUPT_STORMS">INTERRUPT
- STORMS</a></h1>
-<p class="Pp">It is important to note that 40G operation can generate high
- numbers of interrupts, often incorrectly being interpreted as a storm
- condition in the kernel. It is suggested that this be resolved by
- setting:</p>
-<dl class="Bl-tag">
- <dt id="hw.intr_storm_threshold:"><var class="Va">hw.intr_storm_threshold:
- 0</var></dt>
- <dd style="width: auto;">&#x00A0;</dd>
-</dl>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="IOVCTL_OPTIONS"><a class="permalink" href="#IOVCTL_OPTIONS">IOVCTL
- OPTIONS</a></h1>
-<p class="Pp">The driver supports additional optional parameters for created VFs
- (Virtual Functions) when using <a class="Xr">iovctl(8)</a>:</p>
-<dl class="Bl-tag">
- <dt>mac-addr (unicast-mac)</dt>
- <dd>Set the Ethernet MAC address that the VF will use. If unspecified, the VF
- will use a randomly generated MAC address.</dd>
- <dt>mac-anti-spoof (bool)</dt>
- <dd>Prevent the VF from sending Ethernet frames with a source address that
- does not match its own.</dd>
- <dt>allow-set-mac (bool)</dt>
- <dd>Allow the VF to set its own Ethernet MAC address</dd>
- <dt>allow-promisc (bool)</dt>
- <dd>Allow the VF to inspect all of the traffic sent to the port.</dd>
- <dt>num-queues (uint16_t)</dt>
- <dd>Specify the number of queues the VF will have. By default, this is set to
- the number of MSI-X vectors supported by the VF minus one.</dd>
-</dl>
-<p class="Pp">An up to date list of parameters and their defaults can be found
- by using <a class="Xr">iovctl(8)</a> with the -S option.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SUPPORT"><a class="permalink" href="#SUPPORT">SUPPORT</a></h1>
-<p class="Pp">For general information and support, go to the Intel support
- website at:
- <a class="Lk" href="http://support.intel.com/">http://support.intel.com/</a>.</p>
-<p class="Pp">If an issue is identified with this driver with a supported
- adapter, email all the specific information related to the issue to
- <a class="Mt" href="mailto:freebsd@intel.com">freebsd@intel.com</a>.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
- ALSO</a></h1>
-<p class="Pp"><a class="Xr">arp(4)</a>, <a class="Xr">iavf(4)</a>,
- <a class="Xr">iflib(4)</a>, <a class="Xr">netintro(4)</a>,
- <a class="Xr">vlan(4)</a>, <a class="Xr">ifconfig(8)</a>,
- <a class="Xr">iovctl(8)</a></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
-<p class="Pp">The <code class="Nm">ixl</code> device driver first appeared in
- <span class="Ux">FreeBSD 10.1</span>. It was converted to use
- <a class="Xr">iflib(9)</a> in <span class="Ux">FreeBSD 12</span>.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
-<p class="Pp">The <code class="Nm">ixl</code> driver was written by
- <span class="An">Jack Vogel</span>
- &lt;<a class="Mt" href="mailto:jfv@freebsd.org">jfv@freebsd.org</a>&gt; and
- <span class="An">Eric Joyner</span>
- &lt;<a class="Mt" href="mailto:erj@freebsd.org">erj@freebsd.org</a>&gt;.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">August 1, 2023</td>
- <td class="foot-os">FreeBSD 15.0</td>
- </tr>
-</table>