1.\" Copyright (c) 2013 Edward Tomasz Napierala 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 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.Dd April 2, 2013 27.Dt CTL 4 28.Os 29.Sh NAME 30.Nm ctl 31.Nd CAM Target Layer 32.Sh SYNOPSIS 33To compile this driver into the kernel, 34place the following line in your 35kernel configuration file: 36.Bd -ragged -offset indent 37.Cd "device ctl" 38.Ed 39.Pp 40Alternatively, to load the driver as a 41module at boot time, place the following line in 42.Xr loader.conf 5 : 43.Bd -literal -offset indent 44ctl_load="YES" 45.Ed 46.Sh DESCRIPTION 47The 48.Nm 49subsystem provides SCSI disk and processor emulation. 50It supports features such as: 51.Pp 52.Bl -bullet -compact 53.It 54Disk and processor device emulation 55.It 56Tagged queueing 57.It 58SCSI task attribute support (ordered, head of queue, simple tags) 59.It 60SCSI implicit command ordering support. 61.It 62Full task management support (abort, LUN reset, target reset, etc.) 63.It 64Support for multiple ports 65.It 66Support for multiple simultaneous initiators 67.It 68Support for multiple simultaneous backing stores 69.It 70Persistent reservation support 71.It 72Mode sense/select support 73.It 74Error injection support 75.It 76All I/O handled in-kernel, no userland context switch overhead 77.El 78.Sh SEE ALSO 79.Xr ctladm 8 , 80.Xr ctlstat 8 81.Sh HISTORY 82The 83.Nm 84subsystem first appeared in 85.Fx 9.1 . 86.Sh AUTHORS 87The 88.Nm 89subsystem was written by 90.An Kenneth Merry Aq ken@FreeBSD.org . 91