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 January 14, 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. 116 117.Pp 118.Sh LOADER TUNABLES 119Tunables can be set at the 120.Xr loader 8 121prompt before booting the kernel or stored in 122.Xr loader.conf 5 . 123.Bl -tag -width indent 124.It Va hw.ixl.enable_msix 125Allows one to enable/disable MSIX, thus forcing MSI instead. 126.It Va hw.ixl.ringsz 127Set the number of descriptors in the rings, note that this 128changes BOTH the TX and RX rings, they cannot be set independly. 129.It Va hw.ixl.max_queues 130Set the number of queues (each a TX/RX pair) for the port, this 131allows one to override the autocalculation if its set to 0. 132.It Va hw.ixl.dynamic_rx_itr 133The dynamic RX interrupt control, set to 1 to enable. 134.It Va hw.ixl.dynamic_tx_itr 135The dynamic TX interrupt control, set to 1 to enable. 136.It Va hw.ixl.rx_itr 137The RX interrupt rate value, set to 8K by default. 138.It Va hw.ixl.tx_itr 139The TX interrupt rate value, set to 4K by default. 140.El 141.Pp 142.Sh SYSCTL PROCEDURES 143.Bl -tag -width indent 144.It Va hw.ixl.fc 145Allows one to set the flow control value. A value of 0 disables 146flow control, 3 enables full, 1 is RX, and 2 is TX pause. 147.It Va hw.ixl.advertise_speed 148Allows one to set advertised link speeds, this will then 149cause a link renegotiation. With the appropriate adapter 150this can cause a link at 10GB, 1GB, or 100MB. 151.It Va hw.ixl.current_speed 152This is a display of the current setting. 153.It Va hw.ixl.fw_version 154This is a display of the Firmware version. 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. It is suggested that this 159be resolved by setting: 160.Bl -tag -width indent 161.It Va hw.intr_storm_threshold: 0 162.Sh SUPPORT 163For general information and support, 164go to the Intel support website at: 165.Pa http://support.intel.com/ . 166.Pp 167If an issue is identified with this driver with a supported adapter, 168email all the specific information related to the issue to 169.Aq freebsd@intel.com . 170.Sh SEE ALSO 171.Xr arp 4 , 172.Xr netintro 4 , 173.Xr ng_ether 4 , 174.Xr vlan 4 , 175.Xr ifconfig 8 176.Sh HISTORY 177The 178.Nm 179device driver first appeared in 180.Fx 10.1 . 181.Sh AUTHORS 182.An -nosplit 183The 184.Nm 185driver was written by 186.An Jack Vogel Aq Mt jfv@FreeBSD.org 187and 188.An Eric Joyner Aq Mt ricera10@gmail.com . 189