1.\" Copyright (c) 2013-2015, Intel Corporation 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions are met: 6.\" 7.\" 1. Redistributions of source code must retain the above copyright notice, 8.\" this list of conditions and the following disclaimer. 9.\" 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" 3. Neither the name of the Intel Corporation nor the names of its 15.\" contributors may be used to endorse or promote products derived from 16.\" this software without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19.\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.\" * Other names and brands may be claimed as the property of others. 31.\" 32.\" $FreeBSD$ 33.\" 34.Dd March 25, 2015 35.Dt IXL 4 36.Os 37.Sh NAME 38.Nm ixl 39.Nd "Intel XL710 Ethernet 40Gb Base driver" 40.Sh SYNOPSIS 41To compile this driver into the kernel, 42place the following lines in your 43kernel configuration file: 44.Bd -ragged -offset indent 45.Cd "device ixl" 46.Ed 47.Pp 48To load the driver as a 49module at boot time, place the following lines in 50.Xr loader.conf 5 : 51.Bd -literal -offset indent 52if_ixl_load="YES" 53.Ed 54.Sh DESCRIPTION 55The 56.Nm 57driver provides support for PCI Express adapters or LOMs 58in the XL710 Family of ethernet devices. 59The driver supports Jumbo Frames, TX/RX checksum offload, 60TCP segmentation offload (TSO), Large Receive Offload (LRO), VLAN 61tag insertion/extraction, VLAN checksum offload, VLAN TSO, and 62Receive Side Steering (RSS), all for both IPv4 and IPv6. 63For further hardware information and questions related to hardware 64requirements, see 65.Pa http://support.intel.com/ . 66.Pp 67Support for Jumbo Frames is provided via the interface MTU setting. 68Selecting an MTU larger than 1500 bytes with the 69.Xr ifconfig 8 70utility configures the adapter to receive and transmit Jumbo Frames. 71The maximum MTU size for Jumbo Frames is 9706. 72.Pp 73Offloads are also controlled via the interface, for instance, 74checksumming for both IPv4 and IPv6 can be set and unset, TSO4 75and/or TSO6, and finally LRO can be set and unset. 76.Pp 77For more information on configuring this device, see 78.Xr ifconfig 8 . 79.Sh HARDWARE 80The 81.Nm 82driver supports these SFP+ Pluggable Optics: 83.Pp 84.Bl -bullet -compact 85.It 86Intel TRIPLE RATE 1G/10G/40G QSFP+ SR (bailed) E40GQSFPSR 87.It 88Intel TRIPLE RATE 1G/10G/40G QSFP+ SR (bailed) E40GQSFPLR 89.El 90.Pp 91The 92.Nm 93driver supports 10Gb and 1Gb Ethernet adapters with SR Modules: 94.Pp 95.Bl -bullet -compact 96.It 97Intel DUAL RATE 1G/10G SFP+ SR (bailed) FTLX8571D3BCV-IT 98.It 99Intel DUAL RATE 1G/10G SFP+ SR (bailed) AFBR-703SDZ-IN2 100.El 101.Pp 102The 103.Nm 104driver supports 10Gb and 1Gb Ethernet adapters with LR Modules: 105.Pp 106.Bl -bullet -compact 107.It 108Intel DUAL RATE 1G/10G SFP+ LR (bailed) FTLX1471D3BCV-IT 109.It 110Intel DUAL RATE 1G/10G SFP+ LR (bailed) AFCT-701SDZ-IN2 111.El 112.Pp 113Note that X710/XL710 Based SFP+ adapters also support all passive and active 114limiting direct attach cables that comply with SFF-8431 v4.1 and 115SFF-8472 v10.4 specifications. 116.Sh LOADER TUNABLES 117Tunables can be set at the 118.Xr loader 8 119prompt before booting the kernel or stored in 120.Xr loader.conf 5 . 121.Bl -tag -width indent 122.It Va hw.ixl.enable_msix 123Allows one to enable/disable MSIX, thus forcing MSI instead. 124.It Va hw.ixl.ringsz 125Set the number of descriptors in the rings, note that this 126changes BOTH the TX and RX rings, they cannot be set independently. 127.It Va hw.ixl.max_queues 128Set the number of queues (each a TX/RX pair) for the port, this 129allows one to override the autocalculation if it is set to 0. 130.It Va hw.ixl.dynamic_rx_itr 131The dynamic RX interrupt control, set to 1 to enable. 132.It Va hw.ixl.dynamic_tx_itr 133The dynamic TX interrupt control, set to 1 to enable. 134.It Va hw.ixl.rx_itr 135The RX interrupt rate value, set to 8K by default. 136.It Va hw.ixl.tx_itr 137The TX interrupt rate value, set to 4K by default. 138.El 139.Sh SYSCTL PROCEDURES 140.Bl -tag -width indent 141.It Va hw.ixl.fc 142Allows one to set the flow control value. 143A value of 0 disables 144flow control, 3 enables full, 1 is RX, and 2 is TX pause. 145.It Va hw.ixl.advertise_speed 146Allows one to set advertised link speeds, this will then 147cause a link renegotiation. 148With the appropriate adapter 149this can cause a link at 10GB, 1GB, or 100MB. 150.It Va hw.ixl.current_speed 151This is a display of the current setting. 152.It Va hw.ixl.fw_version 153This is a display of the Firmware version. 154.El 155.Sh Interrupt Storms 156It is important to note that 40G operation can generate high 157numbers of interrupts, often incorrectly being interpreted as 158a storm condition in the kernel. 159It is suggested that this 160be resolved by setting: 161.Bl -tag -width indent 162.It Va hw.intr_storm_threshold: 0 163.El 164.Sh SUPPORT 165For general information and support, 166go to the Intel support website at: 167.Pa http://support.intel.com/ . 168.Pp 169If an issue is identified with this driver with a supported adapter, 170email all the specific information related to the issue to 171.Aq freebsd@intel.com . 172.Sh SEE ALSO 173.Xr arp 4 , 174.Xr ixlv 4 , 175.Xr netintro 4 , 176.Xr ng_ether 4 , 177.Xr vlan 4 , 178.Xr ifconfig 8 179.Sh HISTORY 180The 181.Nm 182device driver first appeared in 183.Fx 10.1 . 184.Sh AUTHORS 185.An -nosplit 186The 187.Nm 188driver was written by 189.An Jack Vogel Aq Mt jfv@FreeBSD.org 190and 191.An Eric Joyner Aq Mt ricera10@gmail.com . 192