1 .\" Copyright (c) 2013 Edward Tomasz Napierala
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
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13 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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33 To compile this driver into the kernel,
34 place the following line in your
35 kernel configuration file:
36 .Bd -ragged -offset indent
41 Alternatively, to load the driver as a
42 module at boot time, place the following line in
44 .Bd -literal -offset indent
50 subsystem provides SCSI disk and processor emulation.
51 It supports features such as:
55 Disk and processor device emulation
59 SCSI task attribute support (ordered, head of queue, simple tags)
61 SCSI implicit command ordering support
63 Full task management support (abort, LUN reset, target reset, etc.)
65 Support for multiple ports
67 Support for multiple simultaneous initiators
69 Support for multiple simultaneous backing stores
71 Support for VMWare VAAI: COMPARE AND WRITE, XCOPY, WRITE SAME,
74 Support for Microsoft ODX: POPULATE TOKEN/WRITE USING TOKEN,
75 WRITE SAME, and UNMAP commands
77 Persistent reservation support
79 Mode sense/select support
81 Error injection support
83 All I/O handled in-kernel, no userland context switch overhead
86 It also serves as a kernel component of the native iSCSI target.
88 The following variables are available as both
93 .Bl -tag -width indent
94 .It Va kern.cam.ctl.iscsi.maxcmdsn_delta
95 The number of outstanding commands to advertise to the initiator.
96 Technically, it's the difference between ExpCmdSN and MaxCmdSN fields
98 .It Va kern.cam.ctl.iscsi.ping_timeout
99 The number of seconds to wait for the initiator to respond to a NOP-In
101 In the event that there is no response within that time the session gets
110 subsystem first appeared in
115 subsystem was written by
116 .An Kenneth Merry Aq ken@FreeBSD.org .