1.\" Copyright (c) 2013 Edward Tomasz Napierala 2.\" Copyright (c) 2015-2017 Alexander Motin <mav@FreeBSD.org> 3.\" Copyright (c) 2017 Ngie Cooper <ngie@FreeBSD.org> 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.\" $FreeBSD$ 28.Dd March 29, 2017 29.Dt CFISCSI 4 30.Os 31.Sh NAME 32.Nm cfiscsi 33.Nd CAM Target Layer iSCSI target frontend 34.Sh SYNOPSIS 35To compile this driver into the kernel, 36place the following lines in your 37kernel configuration file: 38.Bd -ragged -offset indent 39.Cd "device cfiscsi" 40.Cd "device ctl" 41.Cd "device iscsi" 42.Ed 43.Pp 44Alternatively, to load the driver as a 45module at boot time, place the following line in 46.Xr loader.conf 5 : 47.Bd -literal -offset indent 48cfiscsi_load="YES" 49.Ed 50.Sh DESCRIPTION 51The 52.Nm 53subsystem provides iSCSI target device emulation via 54.Xr ctl 4 55and 56.Xr iscsi 4 . 57.Sh SYSCTL VARIABLES 58The following variables are available as both 59.Xr sysctl 8 60variables and 61.Xr loader 8 62tunables: 63.Bl -tag -width indent 64.It Va kern.cam.ctl.iscsi.debug 65Verbosity level for log messages from the kernel part of iSCSI target. 66Set to 0 to disable logging or 1 to warn about potential problems. 67Larger values enable debugging output. 68Defaults to 1. 69.It Va kern.cam.ctl.iscsi.maxtags 70The number of outstanding commands to advertise to each iSCSI initiator. 71Current implementation is not very accurate, so do not set this below 2. 72Defaults to 256. 73.It Va kern.cam.ctl.iscsi.ping_timeout 74The number of seconds to wait for the iSCSI initiator to respond to a NOP-In 75PDU. 76In the event that there is no response within that time the session gets 77forcibly terminated. 78Set to 0 to disable sending NOP-In PDUs. 79Defaults to 5. 80.El 81.Sh SEE ALSO 82.Xr ctl 4 , 83.Xr iscsi 4 84.Sh HISTORY 85The 86.Nm 87subsystem first appeared in 88.Fx 10.0 89as part of the 90.Xr ctl 4 91driver. 92It was split off of 93.Xr ctl 4 94in 95.Fx 12.0 . 96.Sh AUTHORS 97.An -nosplit 98The 99.Nm 100subsystem was developed by 101.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org 102under sponsorship from the FreeBSD Foundation. 103This manual page was written by 104.An Ngie Cooper Aq Mt ngie@FreeBSD.org . 105