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+.\" Copyright (c) 2013 Edward Tomasz Napierala
+.\" Copyright (c) 2015-2017 Alexander Motin <mav@FreeBSD.org>
+.\" Copyright (c) 2017 Enji Cooper <ngie@FreeBSD.org>
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.Dd May 28, 2017
+.Dt CFISCSI 4
+.Os
+.Sh NAME
+.Nm cfiscsi
+.Nd CAM Target Layer iSCSI target frontend
+.Sh SYNOPSIS
+To compile this driver into the kernel,
+place the following lines in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device cfiscsi"
+.Cd "device ctl"
+.Cd "device iscsi"
+.Ed
+.Pp
+Alternatively, to load the driver as a
+module at boot time, place the following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+cfiscsi_load="YES"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+subsystem provides the kernel component of an iSCSI target.
+The target is the iSCSI server, providing LUNs backed by local files
+and volumes to remote initiators.
+The userspace component is provided by
+.Xr ctld 8 .
+.Nm
+is implemented as a
+.Xr ctl 4
+frontend and uses infrastructure provided by
+.Xr iscsi 4 .
+.Sh SYSCTL VARIABLES
+The following variables are available as both
+.Xr sysctl 8
+variables and
+.Xr loader 8
+tunables:
+.Bl -tag -width indent
+.It Va kern.cam.ctl.iscsi.debug
+Verbosity level for log messages from the kernel part of iSCSI target.
+Set to 0 to disable logging or 1 to warn about potential problems.
+Larger values enable debugging output.
+Defaults to 1.
+.It Va kern.cam.ctl.iscsi.maxtags
+The number of outstanding commands to advertise to each iSCSI initiator.
+Current implementation is not very accurate, so do not set this below 2.
+Defaults to 256.
+.It Va kern.cam.ctl.iscsi.ping_timeout
+The number of seconds to wait for the iSCSI initiator to respond to a NOP-In
+PDU.
+In the event that there is no response within that time the session gets
+forcibly terminated.
+Set to 0 to disable sending NOP-In PDUs.
+Defaults to 5.
+.El
+.Sh SEE ALSO
+.Xr ctl 4 ,
+.Xr iscsi 4 ,
+.Xr ctl.conf 5 ,
+.Xr ctld 8
+.Sh HISTORY
+The
+.Nm
+subsystem first appeared in
+.Fx 10.0
+as part of the
+.Xr ctl 4
+driver.
+It was split off of
+.Xr ctl 4
+in
+.Fx 12.0 .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+subsystem was developed by
+.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org
+under sponsorship from the FreeBSD Foundation.
+This manual page was written by
+.An Enji Cooper Aq Mt ngie@FreeBSD.org .