sbp-target: Initial merge of firewire/ieee-1394 target mode support

The FireWire SBP-2 Target is a driver for using an IEEE-1394 connection
as a SCSI transport. This module uses the SCSI Target framework to
expose LUNs to other machines attached to a FireWire bus, in effect
acting as a FireWire hard disk similar to FireWire Target Disk mode
on many Apple computers.

This commit contains the squashed pull from Chris Boot's SBP-2-Target:

      https://github.com/bootc/Linux-SBP-2-Target.git patch-v3

firewire-sbp-target: Add sbp_base.h header
firewire-sbp-target: Add sbp_configfs.c
firewire-sbp-target: Add sbp_fabric.{c,h}
firewire-sbp-target: Add sbp_management_agent.{c,h}
firewire-sbp-target: Add sbp_login.{c,h}
firewire-sbp-target: Add sbp_target_agent.{c,h}
firewire-sbp-target: Add sbp_scsi_cmnd.{c,h}
firewire-sbp-target: Add to target Kconfig and Makefile

Also add bootc's entry to the MAINTAINERS file.  Great work Chris !!

Signed-off-by: Chris Boot <bootc@bootc.net>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Andy Grover <agrover@redhat.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

MAINTAINERS

@@ -2754,6 +2754,15 @@ T:	git git://git.alsa-project.org/alsa-kernel.git
 S:	Maintained
 F:	sound/firewire/
 
+FIREWIRE SBP-2 TARGET
+M:	Chris Boot <bootc@bootc.net>
+L:	linux-scsi@vger.kernel.org
+L:	target-devel@vger.kernel.org
+L:	linux1394-devel@lists.sourceforge.net
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/nab/lio-core-2.6.git master
+S:	Maintained
+F:	drivers/target/sbp/
+
 FIREWIRE SUBSYSTEM
 M:	Stefan Richter <stefanr@s5r6.in-berlin.de>
 L:	linux1394-devel@lists.sourceforge.net

drivers/target/Kconfig

@@ -32,5 +32,6 @@ config TCM_PSCSI
 source "drivers/target/loopback/Kconfig"
 source "drivers/target/tcm_fc/Kconfig"
 source "drivers/target/iscsi/Kconfig"
+source "drivers/target/sbp/Kconfig"
 
 endif

drivers/target/Makefile

@@ -25,3 +25,4 @@ obj-$(CONFIG_TCM_PSCSI)		+= target_core_pscsi.o
 obj-$(CONFIG_LOOPBACK_TARGET)	+= loopback/
 obj-$(CONFIG_TCM_FC)		+= tcm_fc/
 obj-$(CONFIG_ISCSI_TARGET)	+= iscsi/
+obj-$(CONFIG_SBP_TARGET)	+= sbp/

drivers/target/sbp/Kconfig

@@ -0,0 +1,11 @@
+config SBP_TARGET
+	tristate "FireWire SBP-2 fabric module"
+	depends on FIREWIRE && EXPERIMENTAL
+	help
+	  Say Y or M here to enable SCSI target functionality over FireWire.
+	  This enables you to expose SCSI devices to other nodes on the FireWire
+	  bus, for example hard disks. Similar to FireWire Target Disk mode on
+	  many Apple computers.
+
+	  To compile this driver as a module, say M here: The module will be
+	  called sbp-target.

drivers/target/sbp/Makefile

@@ -0,0 +1 @@
+obj-$(CONFIG_SBP_TARGET) += sbp_target.o