Intel Ethernet 700 Series Driver
To compile this driver into the kernel, place the following lines in your kernel
To load the driver as a module at boot time, place the following lines in
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:
- XL710 (40G)
- X710 (10G)
- XXV710 (25G)
- X722 (10G)
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
Support for Jumbo Frames is provided via the interface MTU setting. Selecting an
MTU larger than 1500 bytes with the
utility configures the adapter to receive and transmit Jumbo Frames. The
maximum MTU size for Jumbo Frames is 9706.
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.
For more information on configuring this device, see
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 downloadcenter.intel.com
searching for their names, or by installing certain packages:
- To change the behavior of the QSFP+ ports on XL710 adapters, use the Intel
QCU (QSFP+ configuration utility); installed by the
- To update the firmware on an adapter, use the Intel Non-Volatile Memory
(NVM) Update Utility; installed by the
- Drivers are provided by Intel outside of the
FreeBSD kernel; install the
net/intel-ixl-kmod package for the latest
Most adapters in the Intel Ethernet 700 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 supports 40Gb Ethernet
adapters with these QSFP+ modules:
- Intel 4x10G/40G QSFP+ 40GBASE-SR4 E40GQSFPSR
- Intel 4x10G/40G QSFP+ 40GBASE-LR4 E40GQSFPLR
driver supports 25Gb Ethernet
adapters with these SFP28 modules:
- Intel 10G/25G SFP28 25GBASE-SR E25GSFP28SR
- Intel 10G/25G SFP28 25GBASE-SR E25GSFP28SRX (Extended Temp)
driver supports 25Gb and 10Gb
Ethernet adapters with these SFP+ modules:
- Intel 1G/10G SFP+ SR FTLX8571D3BCV-IT
- Intel 1G/10G SFP+ SR AFBR-703SDZ-IN2
- Intel 1G/10G SFP+ LR FTLX1471D3BCV-IT
- Intel 1G/10G SFP+ LR AFCT-701SDZ-IN2
- Intel 1G/10G SFP+ 10GBASE-SR E10GSFPSR
- Intel 10G SFP+ 10GBASE-SR E10GSFPSRX (Extended Temp)
- Intel 1G/10G SFP+ 10GBASE-LR E10GSFPLR
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.
This is not an exhaustive list; please consult product documentation for an
up-to-date list of supported media.
Tunables can be set at the
prompt before booting the kernel or stored in
- The RX interrupt rate value, set to 62 (124 usec) by default.
- The TX interrupt rate value, set to 122 (244 usec) by default.
- Access method that driver will use for I2C read and writes via
Using the Admin Queue is only supported on 710 devices with FW version 1.7
or newer. Set to 0 by default.
0 - best available method
1 - bit bang via I2CPARAMS register
2 - register read/write via I2CCMD register
3 - Use Admin Queue command (default best)
- Filter out packets with Ethertype 0x8808 from being sent out by
non-adapter sources. This prevents (potentially untrusted) software or
devices from sending out flow control packets and creating a DoS (Denial
of Service) event. Enabled by default.
- 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
- 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.
The negotiated flow control setting can be viewed in
in the interface's media field.
- Set the speeds that the interface will advertise on the link.
dev.ixl.#.supported_speeds contains the
speeds that are allowed to be set.
- Displays the current speed.
- Displays the current firmware and NVM versions of the adapter.
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:
- hw.intr_storm_threshold: 0
The driver supports additional optional parameters for created VFs (Virtual
Functions) when using
- mac-addr (unicast-mac)
- Set the Ethernet MAC address that the VF will use. If unspecified, the VF
will use a randomly generated MAC address.
- mac-anti-spoof (bool)
- Prevent the VF from sending Ethernet frames with a source address that
does not match its own.
- allow-set-mac (bool)
- Allow the VF to set its own Ethernet MAC address
- allow-promisc (bool)
- Allow the VF to inspect all of the traffic sent to the port.
- num-queues (uint16_t)
- 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.
An up to date list of parameters and their defaults can be found by using
with the -S option.
For general information and support, go to the Intel support website at:
If an issue is identified with this driver with a supported adapter, email all
the specific information related to the issue to
device driver first appeared in
. It was converted to use
in FreeBSD 12
driver was written by
and Eric Joyner