usbip: move usbip userspace code out of staging

At this point, USB/IP userspace code is fully functional
and can be moved out of staging.

Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

37 files changed, 5625 insertions, 0 deletions

diff --git a/tools/usb/usbip/.gitignore b/tools/usb/usbip/.gitignore
new file mode 100644
index 000000000000..9aad9e30a8ba
--- /dev/null
+++ b/tools/usb/usbip/.gitignore
@@ -0,0 +1,28 @@
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache/
+config.guess
+config.h
+config.h.in
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+libsrc/Makefile
+libsrc/Makefile.in
+libtool
+ltmain.sh
+missing
+src/Makefile
+src/Makefile.in
+stamp-h1
+libsrc/libusbip.la
+libsrc/libusbip_la-names.lo
+libsrc/libusbip_la-usbip_common.lo
+libsrc/libusbip_la-usbip_host_driver.lo
+libsrc/libusbip_la-vhci_driver.lo
+src/usbip
+src/usbipd
diff --git a/tools/usb/usbip/AUTHORS b/tools/usb/usbip/AUTHORS
new file mode 100644
index 000000000000..a27ea8d03aec
--- /dev/null
+++ b/tools/usb/usbip/AUTHORS
@@ -0,0 +1,3 @@
+Takahiro Hirofuchi
+Robert Leibl
+matt mooney <mfm@muteddisk.com>
diff --git a/tools/usb/usbip/COPYING b/tools/usb/usbip/COPYING
new file mode 100644
index 000000000000..c5611e48a8e1
--- /dev/null
+++ b/tools/usb/usbip/COPYING
@@ -0,0 +1,340 @@
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diff --git a/tools/usb/usbip/INSTALL b/tools/usb/usbip/INSTALL
new file mode 100644
index 000000000000..d3c5b40a9409
--- /dev/null
+++ b/tools/usb/usbip/INSTALL
@@ -0,0 +1,237 @@
+Installation Instructions
+*************************
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+`-C'
+     Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+     Do not print messages saying which checks are being made.  To
+     suppress all normal output, redirect it to `/dev/null' (any error
+     messages will still be shown).
+
+`--srcdir=DIR'
+     Look for the package's source code in directory DIR.  Usually
+     `configure' can determine that directory automatically.
+
+`configure' also accepts some other, not widely useful, options.  Run
+`configure --help' for more details.
+
diff --git a/tools/usb/usbip/Makefile.am b/tools/usb/usbip/Makefile.am
new file mode 100644
index 000000000000..66f8bf038c9f
--- /dev/null
+++ b/tools/usb/usbip/Makefile.am
@@ -0,0 +1,6 @@
+SUBDIRS := libsrc src
+includedir = @includedir@/usbip
+include_HEADERS := $(addprefix libsrc/, \
+		     usbip_common.h vhci_driver.h usbip_host_driver.h)
+
+dist_man_MANS := $(addprefix doc/, usbip.8 usbipd.8)
diff --git a/tools/usb/usbip/README b/tools/usb/usbip/README
new file mode 100644
index 000000000000..831f49fea3ce
--- /dev/null
+++ b/tools/usb/usbip/README
@@ -0,0 +1,202 @@
+#
+# README for usbip-utils
+#
+# Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+#               2005-2008 Takahiro Hirofuchi
+
+
+[Requirements]
+    - USB/IP device drivers
+	Found in the staging directory of the Linux kernel.
+
+    - libudev >= 2.0
+	libudev library
+
+    - libwrap0-dev
+	tcp wrapper library
+
+    - gcc >= 4.0
+
+    - libtool, automake >= 1.9, autoconf >= 2.5.0, pkg-config
+
+[Optional]
+    - hwdata
+        Contains USB device identification data.
+
+
+[Install]
+    0. Generate configuration scripts.
+	$ ./autogen.sh
+
+    1. Compile & install the userspace utilities.
+	$ ./configure [--with-tcp-wrappers=no] [--with-usbids-dir=<dir>]
+	$ make install
+
+    2. Compile & install USB/IP drivers.
+
+
+[Usage]
+    server:# (Physically attach your USB device.)
+
+    server:# insmod usbip-core.ko
+    server:# insmod usbip-host.ko
+
+    server:# usbipd -D
+	- Start usbip daemon.
+
+    server:# usbip list -l
+	- List driver assignments for USB devices.
+
+    server:# usbip bind --busid 1-2
+	- Bind usbip-host.ko to the device with busid 1-2.
+	- The USB device 1-2 is now exportable to other hosts!
+	- Use `usbip unbind --busid 1-2' to stop exporting the device.
+
+    client:# insmod usbip-core.ko
+    client:# insmod vhci-hcd.ko
+
+    client:# usbip list --remote <host>
+	- List exported USB devices on the <host>.
+
+    client:# usbip attach --remote <host> --busid 1-2
+	- Connect the remote USB device.
+
+    client:# usbip port
+	- Show virtual port status.
+
+    client:# usbip detach --port <port>
+	- Detach the USB device.
+
+
+[Example]
+---------------------------
+	SERVER SIDE
+---------------------------
+Physically attach your USB devices to this host.
+
+    trois:# insmod path/to/usbip-core.ko
+    trois:# insmod path/to/usbip-host.ko
+    trois:# usbipd -D
+
+In another terminal, let's look up what USB devices are physically
+attached to this host.
+
+    trois:# usbip list -l
+    Local USB devices
+    =================
+     - busid 1-1 (05a9:a511)
+	     1-1:1.0 -> ov511
+
+     - busid 3-2 (0711:0902)
+	     3-2:1.0 -> none
+
+     - busid 3-3.1 (08bb:2702)
+	     3-3.1:1.0 -> snd-usb-audio
+	     3-3.1:1.1 -> snd-usb-audio
+
+     - busid 3-3.2 (04bb:0206)
+	     3-3.2:1.0 -> usb-storage
+
+     - busid 3-3 (0409:0058)
+	     3-3:1.0 -> hub
+
+     - busid 4-1 (046d:08b2)
+	     4-1:1.0 -> none
+	     4-1:1.1 -> none
+	     4-1:1.2 -> none
+
+     - busid 5-2 (058f:9254)
+	     5-2:1.0 -> hub
+
+A USB storage device of busid 3-3.2 is now bound to the usb-storage
+driver. To export this device, we first mark the device as
+"exportable"; the device is bound to the usbip-host driver. Please
+remember you can not export a USB hub.
+
+Mark the device of busid 3-3.2 as exportable:
+
+    trois:# usbip --debug bind --busid 3-3.2
+    ...
+    usbip debug: usbip_bind.c:162:[unbind_other] 3-3.2:1.0 -> usb-storage
+    ...
+    bind device on busid 3-3.2: complete
+
+    trois:# usbip list -l
+    Local USB devices
+    =================
+    ...
+
+     - busid 3-3.2 (04bb:0206)
+	     3-3.2:1.0 -> usbip-host
+    ...
+
+---------------------------
+	CLIENT SIDE
+---------------------------
+First, let's list available remote devices that are marked as
+exportable on the host.
+
+    deux:# insmod path/to/usbip-core.ko
+    deux:# insmod path/to/vhci-hcd.ko
+
+    deux:# usbip list --remote 10.0.0.3
+    Exportable USB devices
+    ======================
+     - 10.0.0.3
+	    1-1: Prolific Technology, Inc. : unknown product (067b:3507)
+	       : /sys/devices/pci0000:00/0000:00:1f.2/usb1/1-1
+	       : (Defined at Interface level) / unknown subclass / unknown protocol (00/00/00)
+	       :  0 - Mass Storage / SCSI / Bulk (Zip) (08/06/50)
+
+	1-2.2.1: Apple Computer, Inc. : unknown product (05ac:0203)
+	       : /sys/devices/pci0000:00/0000:00:1f.2/usb1/1-2/1-2.2/1-2.2.1
+	       : (Defined at Interface level) / unknown subclass / unknown protocol (00/00/00)
+	       :  0 - Human Interface Devices / Boot Interface Subclass / Keyboard (03/01/01)
+
+	1-2.2.3: OmniVision Technologies, Inc. : OV511+ WebCam (05a9:a511)
+	       : /sys/devices/pci0000:00/0000:00:1f.2/usb1/1-2/1-2.2/1-2.2.3
+	       : (Defined at Interface level) / unknown subclass / unknown protocol (00/00/00)
+	       :  0 - Vendor Specific Class / unknown subclass / unknown protocol (ff/00/00)
+
+	    3-1: Logitech, Inc. : QuickCam Pro 4000 (046d:08b2)
+	       : /sys/devices/pci0000:00/0000:00:1e.0/0000:02:0a.0/usb3/3-1
+	       : (Defined at Interface level) / unknown subclass / unknown protocol (00/00/00)
+	       :  0 - Data / unknown subclass / unknown protocol (0a/ff/00)
+	       :  1 - Audio / Control Device / unknown protocol (01/01/00)
+	       :  2 - Audio / Streaming / unknown protocol (01/02/00)
+
+Attach a remote USB device:
+
+    deux:# usbip attach --remote 10.0.0.3 --busid 1-1
+    port 0 attached
+
+Show the devices attached to this client:
+
+    deux:# usbip port
+    Port 00: <Port in Use> at Full Speed(12Mbps)
+	   Prolific Technology, Inc. : unknown product (067b:3507)
+	   6-1 -> usbip://10.0.0.3:3240/1-1  (remote bus/dev 001/004)
+	   6-1:1.0 used by usb-storage
+			  /sys/class/scsi_device/0:0:0:0/device
+			  /sys/class/scsi_host/host0/device
+			  /sys/block/sda/device
+
+Detach the imported device:
+
+    deux:# usbip detach --port 0
+    port 0 detached
+
+
+[Checklist]
+    - See 'Debug Tips' on the project wiki.
+	- http://usbip.wiki.sourceforge.net/how-to-debug-usbip
+    - usbip-host.ko must be bound to the target device.
+	- See /proc/bus/usb/devices and find "Driver=..." lines of the device.
+    - Shutdown firewall.
+	- usbip now uses TCP port 3240.
+    - Disable SELinux.
+    - Check the kernel and daemon messages.
+
+
+[Contact]
+    Mailing List: linux-usb@vger.kernel.org
diff --git a/tools/usb/usbip/autogen.sh b/tools/usb/usbip/autogen.sh
new file mode 100755
index 000000000000..e1112d3fcbf6
--- /dev/null
+++ b/tools/usb/usbip/autogen.sh
@@ -0,0 +1,9 @@
+#!/bin/sh -x
+
+#aclocal
+#autoheader
+#libtoolize --copy --force
+#automake-1.9 -acf
+#autoconf
+
+autoreconf -i -f -v
diff --git a/tools/usb/usbip/cleanup.sh b/tools/usb/usbip/cleanup.sh
new file mode 100755
index 000000000000..955c3ccb729a
--- /dev/null
+++ b/tools/usb/usbip/cleanup.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+if [ -r Makefile ]; then
+	make distclean
+fi
+
+FILES="aclocal.m4 autom4te.cache compile config.guess config.h.in config.log \
+       config.status config.sub configure cscope.out depcomp install-sh      \
+       libsrc/Makefile libsrc/Makefile.in libtool ltmain.sh Makefile         \
+       Makefile.in missing src/Makefile src/Makefile.in"
+
+rm -vRf $FILES
diff --git a/tools/usb/usbip/configure.ac b/tools/usb/usbip/configure.ac
new file mode 100644
index 000000000000..607d05c5ccfd
--- /dev/null
+++ b/tools/usb/usbip/configure.ac
@@ -0,0 +1,111 @@
+dnl Process this file with autoconf to produce a configure script.
+
+AC_PREREQ(2.59)
+AC_INIT([usbip-utils], [2.0], [linux-usb@vger.kernel.org])
+AC_DEFINE([USBIP_VERSION], [0x00000111], [binary-coded decimal version number])
+
+CURRENT=0
+REVISION=1
+AGE=0
+AC_SUBST([LIBUSBIP_VERSION], [$CURRENT:$REVISION:$AGE], [library version])
+
+AC_CONFIG_SRCDIR([src/usbipd.c])
+AC_CONFIG_HEADERS([config.h])
+
+AM_INIT_AUTOMAKE([foreign])
+LT_INIT
+
+# Silent build for automake >= 1.11
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+
+AC_SUBST([EXTRA_CFLAGS], ["-Wall -Werror -Wextra -std=gnu99"])
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_INSTALL
+AC_PROG_MAKE_SET
+
+# Checks for header files.
+AC_HEADER_DIRENT
+AC_HEADER_STDC
+AC_CHECK_HEADERS([arpa/inet.h fcntl.h netdb.h netinet/in.h stdint.h stdlib.h dnl
+		  string.h sys/socket.h syslog.h unistd.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_TYPE_INT32_T
+AC_TYPE_SIZE_T
+AC_TYPE_SSIZE_T
+AC_TYPE_UINT16_T
+AC_TYPE_UINT32_T
+AC_TYPE_UINT8_T
+
+# Checks for library functions.
+AC_FUNC_REALLOC
+AC_CHECK_FUNCS([memset mkdir regcomp socket strchr strerror strstr dnl
+		strtoul])
+
+AC_CHECK_HEADER([libudev.h],
+		[AC_CHECK_LIB([udev], [udev_new],
+			      [LIBS="$LIBS -ludev"],
+			      [AC_MSG_ERROR([Missing udev library!])])],
+		[AC_MSG_ERROR([Missing /usr/include/libudev.h])])
+
+# Checks for libwrap library.
+AC_MSG_CHECKING([whether to use the libwrap (TCP wrappers) library])
+AC_ARG_WITH([tcp-wrappers],
+	    [AS_HELP_STRING([--with-tcp-wrappers],
+			    [use the libwrap (TCP wrappers) library])],
+	    dnl [ACTION-IF-GIVEN]
+	    [if test "$withval" = "yes"; then
+		     AC_MSG_RESULT([yes])
+		     AC_MSG_CHECKING([for hosts_access in -lwrap])
+		     saved_LIBS="$LIBS"
+		     LIBS="-lwrap $saved_LIBS"
+		     AC_TRY_LINK(
+		       [int hosts_access(); int allow_severity, deny_severity;],
+		       [hosts_access()],
+		       [AC_MSG_RESULT([yes]);
+			AC_DEFINE([HAVE_LIBWRAP], [1],
+				  [use tcp wrapper]) wrap_LIB="-lwrap"],
+		       [AC_MSG_RESULT([not found]); exit 1])
+	     else
+		     AC_MSG_RESULT([no]);
+	     fi],
+	    dnl [ACTION-IF-NOT-GIVEN]
+	    [AC_MSG_RESULT([(default)])
+	     AC_MSG_CHECKING([for hosts_access in -lwrap])
+	     saved_LIBS="$LIBS"
+	     LIBS="-lwrap $saved_LIBS"
+	     AC_TRY_LINK(
+	       [int hosts_access(); int allow_severity, deny_severity;],
+	       [hosts_access()],
+	       [AC_MSG_RESULT([yes]);
+		AC_DEFINE([HAVE_LIBWRAP], [1], [use tcp wrapper])],
+	       [AC_MSG_RESULT([no]); LIBS="$saved_LIBS"])])
+
+# Sets directory containing usb.ids.
+AC_ARG_WITH([usbids-dir],
+	    [AS_HELP_STRING([--with-usbids-dir=DIR],
+	       [where usb.ids is found (default /usr/share/hwdata/)])],
+	    [USBIDS_DIR=$withval], [USBIDS_DIR="/usr/share/hwdata/"])
+AC_SUBST([USBIDS_DIR])
+
+# use _FORTIFY_SOURCE
+AC_MSG_CHECKING([whether to use fortify])
+AC_ARG_WITH([fortify],
+	    [AS_HELP_STRING([--with-fortify],
+			    [use _FORTIFY_SROUCE option when compiling)])],
+			    dnl [ACTION-IF-GIVEN]
+			    [if test "$withval" = "yes"; then
+				AC_MSG_RESULT([yes])
+				CFLAGS="$CFLAGS -D_FORTIFY_SOURCE -O"
+			     else
+			     	AC_MSG_RESULT([no])
+				CFLAGS="$CFLAGS -U_FORTIFY_SOURCE"
+			     fi
+			    ],
+			    dnl [ACTION-IF-NOT-GIVEN]
+			    [AC_MSG_RESULT([default])])
+
+AC_CONFIG_FILES([Makefile libsrc/Makefile src/Makefile])
+AC_OUTPUT
diff --git a/tools/usb/usbip/doc/usbip.8 b/tools/usb/usbip/doc/usbip.8
new file mode 100644
index 000000000000..a6097be25d28
--- /dev/null
+++ b/tools/usb/usbip/doc/usbip.8
@@ -0,0 +1,95 @@
+.TH USBIP "8" "February 2009" "usbip" "System Administration Utilities"
+.SH NAME
+usbip \- manage USB/IP devices
+.SH SYNOPSIS
+.B usbip
+[\fIoptions\fR] <\fIcommand\fR> <\fIargs\fR>
+
+.SH DESCRIPTION
+On a USB/IP server, devices can be listed, bound, and unbound using
+this program.  On a USB/IP client, devices exported by USB/IP servers
+can be listed, attached and detached.
+
+.SH OPTIONS
+.HP
+\fB\-\-debug\fR
+.IP
+Print debugging information.
+.PP
+
+.HP
+\fB\-\-log\fR
+.IP
+Log to syslog.
+.PP
+
+.HP
+\fB\-\-tcp-port PORT\fR
+.IP
+Connect to PORT on remote host (used for attach and list --remote).
+.PP
+
+.SH COMMANDS
+.HP
+\fBversion\fR
+.IP
+Show version and exit.
+.PP
+
+.HP
+\fBhelp\fR [\fIcommand\fR]
+.IP
+Print the program help message, or help on a specific command, and
+then exit.
+.PP
+
+.HP
+\fBattach\fR \-\-remote=<\fIhost\fR> \-\-busid=<\fIbus_id\fR>
+.IP
+Attach a remote USB device.
+.PP
+
+.HP
+\fBdetach\fR \-\-port=<\fIport\fR>
+.IP
+Detach an imported USB device.
+.PP
+
+.HP
+\fBbind\fR \-\-busid=<\fIbusid\fR>
+.IP
+Make a device exportable.
+.PP
+
+.HP
+\fBunbind\fR \-\-busid=<\fIbusid\fR>
+.IP
+Stop exporting a device so it can be used by a local driver.
+.PP
+
+.HP
+\fBlist\fR \-\-remote=<\fIhost\fR>
+.IP
+List USB devices exported by a remote host.
+.PP
+
+.HP
+\fBlist\fR \-\-local
+.IP
+List local USB devices.
+.PP
+
+
+.SH EXAMPLES
+
+    client:# usbip list --remote=server
+        - List exportable usb devices on the server.
+
+    client:# usbip attach --remote=server --busid=1-2
+        - Connect the remote USB device.
+
+    client:# usbip detach --port=0
+        - Detach the usb device.
+
+.SH "SEE ALSO"
+\fBusbipd\fP\fB(8)\fB\fP
diff --git a/tools/usb/usbip/doc/usbipd.8 b/tools/usb/usbip/doc/usbipd.8
new file mode 100644
index 000000000000..ac4635db3f03
--- /dev/null
+++ b/tools/usb/usbip/doc/usbipd.8
@@ -0,0 +1,91 @@
+.TH USBIP "8" "February 2009" "usbip" "System Administration Utilities"
+.SH NAME
+usbipd \- USB/IP server daemon
+.SH SYNOPSIS
+.B usbipd
+[\fIoptions\fR]
+
+.SH DESCRIPTION
+.B usbipd
+provides USB/IP clients access to exported USB devices.
+
+Devices have to explicitly be exported using
+.B usbip bind
+before usbipd makes them available to other hosts.
+
+The daemon accepts connections from USB/IP clients
+on TCP port 3240 by default.
+
+.SH OPTIONS
+.HP
+\fB\-4\fR, \fB\-\-ipv4\fR
+.IP
+Bind to IPv4. Default is both.
+.PP
+
+.HP
+\fB\-6\fR, \fB\-\-ipv6\fR
+.IP
+Bind to IPv6. Default is both.
+.PP
+
+.HP
+\fB\-D\fR, \fB\-\-daemon\fR
+.IP
+Run as a daemon process.
+.PP
+
+.HP
+\fB\-d\fR, \fB\-\-debug\fR
+.IP
+Print debugging information.
+.PP
+
+.HP
+\fB\-PFILE\fR, \fB\-\-pid FILE\fR
+.IP
+Write process id to FILE.
+.br
+If no FILE specified, use /var/run/usbipd.pid
+.PP
+
+\fB\-tPORT\fR, \fB\-\-tcp\-port PORT\fR
+.IP
+Listen on TCP/IP port PORT.
+.PP
+
+\fB\-h\fR, \fB\-\-help\fR
+.IP
+Print the program help message and exit.
+.PP
+
+.HP
+\fB\-v\fR, \fB\-\-version\fR
+.IP
+Show version.
+.PP
+
+.SH LIMITATIONS
+
+.B usbipd
+offers no authentication or authorization for USB/IP. Any
+USB/IP client can connect and use exported devices.
+
+.SH EXAMPLES
+
+    server:# modprobe usbip
+
+    server:# usbipd -D
+        - Start usbip daemon.
+
+    server:# usbip list --local
+        - List driver assignments for usb devices.
+
+    server:# usbip bind --busid=1-2
+        - Bind usbip-host.ko to the device of busid 1-2.
+        - A usb device 1-2 is now exportable to other hosts!
+        - Use 'usbip unbind --busid=1-2' when you want to shutdown exporting and use the device locally.
+
+.SH "SEE ALSO"
+\fBusbip\fP\fB(8)\fB\fP
+
diff --git a/tools/usb/usbip/libsrc/Makefile.am b/tools/usb/usbip/libsrc/Makefile.am
new file mode 100644
index 000000000000..7c8f8a4d54e4
--- /dev/null
+++ b/tools/usb/usbip/libsrc/Makefile.am
@@ -0,0 +1,8 @@
+libusbip_la_CPPFLAGS = -DUSBIDS_FILE='"@USBIDS_DIR@/usb.ids"'
+libusbip_la_CFLAGS   = @EXTRA_CFLAGS@
+libusbip_la_LDFLAGS  = -version-info @LIBUSBIP_VERSION@
+
+lib_LTLIBRARIES := libusbip.la
+libusbip_la_SOURCES := names.c names.h usbip_host_driver.c usbip_host_driver.h \
+		       usbip_common.c usbip_common.h vhci_driver.c vhci_driver.h \
+		       sysfs_utils.c sysfs_utils.h
diff --git a/tools/usb/usbip/libsrc/list.h b/tools/usb/usbip/libsrc/list.h
new file mode 100644
index 000000000000..8d0c936e184f
--- /dev/null
+++ b/tools/usb/usbip/libsrc/list.h
@@ -0,0 +1,136 @@
+#ifndef _LIST_H
+#define _LIST_H
+
+/* Stripped down implementation of linked list taken
+ * from the Linux Kernel.
+ */
+
+/*
+ * Simple doubly linked list implementation.
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ */
+
+struct list_head {
+	struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+	struct list_head name = LIST_HEAD_INIT(name)
+
+static inline void INIT_LIST_HEAD(struct list_head *list)
+{
+	list->next = list;
+	list->prev = list;
+}
+
+/*
+ * Insert a new entry between two known consecutive entries.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_add(struct list_head *new,
+			      struct list_head *prev,
+			      struct list_head *next)
+{
+	next->prev = new;
+	new->next = next;
+	new->prev = prev;
+	prev->next = new;
+}
+
+/**
+ * list_add - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+static inline void list_add(struct list_head *new, struct list_head *head)
+{
+	__list_add(new, head, head->next);
+}
+
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_del(struct list_head * prev, struct list_head * next)
+{
+	next->prev = prev;
+	prev->next = next;
+}
+
+#define POISON_POINTER_DELTA 0
+#define LIST_POISON1  ((void *) 0x00100100 + POISON_POINTER_DELTA)
+#define LIST_POISON2  ((void *) 0x00200200 + POISON_POINTER_DELTA)
+
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty() on entry does not return true after this, the entry is
+ * in an undefined state.
+ */
+static inline void __list_del_entry(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+}
+
+static inline void list_del(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+	entry->next = LIST_POISON1;
+	entry->prev = LIST_POISON2;
+}
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr:	the &struct list_head pointer.
+ * @type:	the type of the struct this is embedded in.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_entry(ptr, type, member) \
+	container_of(ptr, type, member)
+/**
+ * list_for_each	-	iterate over a list
+ * @pos:	the &struct list_head to use as a loop cursor.
+ * @head:	the head for your list.
+ */
+#define list_for_each(pos, head) \
+	for (pos = (head)->next; pos != (head); pos = pos->next)
+
+/**
+ * list_for_each_safe - iterate over a list safe against removal of list entry
+ * @pos:	the &struct list_head to use as a loop cursor.
+ * @n:		another &struct list_head to use as temporary storage
+ * @head:	the head for your list.
+ */
+#define list_for_each_safe(pos, n, head) \
+	for (pos = (head)->next, n = pos->next; pos != (head); \
+		pos = n, n = pos->next)
+
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ *
+ */
+#define container_of(ptr, type, member) ({			\
+	const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
+	(type *)( (char *)__mptr - offsetof(type,member) );})
+
+#endif
diff --git a/tools/usb/usbip/libsrc/names.c b/tools/usb/usbip/libsrc/names.c
new file mode 100644
index 000000000000..81ff8522405c
--- /dev/null
+++ b/tools/usb/usbip/libsrc/names.c
@@ -0,0 +1,504 @@
+/*
+ *      names.c  --  USB name database manipulation routines
+ *
+ *      Copyright (C) 1999, 2000  Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program; if not, write to the Free Software
+ *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *
+ *
+ *
+ *	Copyright (C) 2005 Takahiro Hirofuchi
+ *		- names_deinit() is added.
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "names.h"
+#include "usbip_common.h"
+
+struct vendor {
+	struct vendor *next;
+	u_int16_t vendorid;
+	char name[1];
+};
+
+struct product {
+	struct product *next;
+	u_int16_t vendorid, productid;
+	char name[1];
+};
+
+struct class {
+	struct class *next;
+	u_int8_t classid;
+	char name[1];
+};
+
+struct subclass {
+	struct subclass *next;
+	u_int8_t classid, subclassid;
+	char name[1];
+};
+
+struct protocol {
+	struct protocol *next;
+	u_int8_t classid, subclassid, protocolid;
+	char name[1];
+};
+
+struct genericstrtable {
+	struct genericstrtable *next;
+	unsigned int num;
+	char name[1];
+};
+
+
+#define HASH1  0x10
+#define HASH2  0x02
+#define HASHSZ 16
+
+static unsigned int hashnum(unsigned int num)
+{
+	unsigned int mask1 = HASH1 << 27, mask2 = HASH2 << 27;
+
+	for (; mask1 >= HASH1; mask1 >>= 1, mask2 >>= 1)
+		if (num & mask1)
+			num ^= mask2;
+	return num & (HASHSZ-1);
+}
+
+
+static struct vendor *vendors[HASHSZ] = { NULL, };
+static struct product *products[HASHSZ] = { NULL, };
+static struct class *classes[HASHSZ] = { NULL, };
+static struct subclass *subclasses[HASHSZ] = { NULL, };
+static struct protocol *protocols[HASHSZ] = { NULL, };
+
+const char *names_vendor(u_int16_t vendorid)
+{
+	struct vendor *v;
+
+	v = vendors[hashnum(vendorid)];
+	for (; v; v = v->next)
+		if (v->vendorid == vendorid)
+			return v->name;
+	return NULL;
+}
+
+const char *names_product(u_int16_t vendorid, u_int16_t productid)
+{
+	struct product *p;
+
+	p = products[hashnum((vendorid << 16) | productid)];
+	for (; p; p = p->next)
+		if (p->vendorid == vendorid && p->productid == productid)
+			return p->name;
+	return NULL;
+}
+
+const char *names_class(u_int8_t classid)
+{
+	struct class *c;
+
+	c = classes[hashnum(classid)];
+	for (; c; c = c->next)
+		if (c->classid == classid)
+			return c->name;
+	return NULL;
+}
+
+const char *names_subclass(u_int8_t classid, u_int8_t subclassid)
+{
+	struct subclass *s;
+
+	s = subclasses[hashnum((classid << 8) | subclassid)];
+	for (; s; s = s->next)
+		if (s->classid == classid && s->subclassid == subclassid)
+			return s->name;
+	return NULL;
+}
+
+const char *names_protocol(u_int8_t classid, u_int8_t subclassid,
+			   u_int8_t protocolid)
+{
+	struct protocol *p;
+
+	p = protocols[hashnum((classid << 16) | (subclassid << 8)
+			      | protocolid)];
+	for (; p; p = p->next)
+		if (p->classid == classid && p->subclassid == subclassid &&
+		    p->protocolid == protocolid)
+			return p->name;
+	return NULL;
+}
+
+/* add a cleanup function by takahiro */
+struct pool {
+	struct pool *next;
+	void *mem;
+};
+
+static struct pool *pool_head;
+
+static void *my_malloc(size_t size)
+{
+	struct pool *p;
+
+	p = calloc(1, sizeof(struct pool));
+	if (!p)
+		return NULL;
+
+	p->mem = calloc(1, size);
+	if (!p->mem) {
+		free(p);
+		return NULL;
+	}
+
+	p->next = pool_head;
+	pool_head = p;
+
+	return p->mem;
+}
+
+void names_free(void)
+{
+	struct pool *pool;
+
+	if (!pool_head)
+		return;
+
+	for (pool = pool_head; pool != NULL; ) {
+		struct pool *tmp;
+
+		if (pool->mem)
+			free(pool->mem);
+
+		tmp = pool;
+		pool = pool->next;
+		free(tmp);
+	}
+}
+
+static int new_vendor(const char *name, u_int16_t vendorid)
+{
+	struct vendor *v;
+	unsigned int h = hashnum(vendorid);
+
+	v = vendors[h];
+	for (; v; v = v->next)
+		if (v->vendorid == vendorid)
+			return -1;
+	v = my_malloc(sizeof(struct vendor) + strlen(name));
+	if (!v)
+		return -1;
+	strcpy(v->name, name);
+	v->vendorid = vendorid;
+	v->next = vendors[h];
+	vendors[h] = v;
+	return 0;
+}
+
+static int new_product(const char *name, u_int16_t vendorid,
+		       u_int16_t productid)
+{
+	struct product *p;
+	unsigned int h = hashnum((vendorid << 16) | productid);
+
+	p = products[h];
+	for (; p; p = p->next)
+		if (p->vendorid == vendorid && p->productid == productid)
+			return -1;
+	p = my_malloc(sizeof(struct product) + strlen(name));
+	if (!p)
+		return -1;
+	strcpy(p->name, name);
+	p->vendorid = vendorid;
+	p->productid = productid;
+	p->next = products[h];
+	products[h] = p;
+	return 0;
+}
+
+static int new_class(const char *name, u_int8_t classid)
+{
+	struct class *c;
+	unsigned int h = hashnum(classid);
+
+	c = classes[h];
+	for (; c; c = c->next)
+		if (c->classid == classid)
+			return -1;
+	c = my_malloc(sizeof(struct class) + strlen(name));
+	if (!c)
+		return -1;
+	strcpy(c->name, name);
+	c->classid = classid;
+	c->next = classes[h];
+	classes[h] = c;
+	return 0;
+}
+
+static int new_subclass(const char *name, u_int8_t classid, u_int8_t subclassid)
+{
+	struct subclass *s;
+	unsigned int h = hashnum((classid << 8) | subclassid);
+
+	s = subclasses[h];
+	for (; s; s = s->next)
+		if (s->classid == classid && s->subclassid == subclassid)
+			return -1;
+	s = my_malloc(sizeof(struct subclass) + strlen(name));
+	if (!s)
+		return -1;
+	strcpy(s->name, name);
+	s->classid = classid;
+	s->subclassid = subclassid;
+	s->next = subclasses[h];
+	subclasses[h] = s;
+	return 0;
+}
+
+static int new_protocol(const char *name, u_int8_t classid, u_int8_t subclassid,
+			u_int8_t protocolid)
+{
+	struct protocol *p;
+	unsigned int h = hashnum((classid << 16) | (subclassid << 8)
+				 | protocolid);
+
+	p = protocols[h];
+	for (; p; p = p->next)
+		if (p->classid == classid && p->subclassid == subclassid
+		    && p->protocolid == protocolid)
+			return -1;
+	p = my_malloc(sizeof(struct protocol) + strlen(name));
+	if (!p)
+		return -1;
+	strcpy(p->name, name);
+	p->classid = classid;
+	p->subclassid = subclassid;
+	p->protocolid = protocolid;
+	p->next = protocols[h];
+	protocols[h] = p;
+	return 0;
+}
+
+static void parse(FILE *f)
+{
+	char buf[512], *cp;
+	unsigned int linectr = 0;
+	int lastvendor = -1;
+	int lastclass = -1;
+	int lastsubclass = -1;
+	int lasthut = -1;
+	int lastlang = -1;
+	unsigned int u;
+
+	while (fgets(buf, sizeof(buf), f)) {
+		linectr++;
+		/* remove line ends */
+		cp = strchr(buf, '\r');
+		if (cp)
+			*cp = 0;
+		cp = strchr(buf, '\n');
+		if (cp)
+			*cp = 0;
+		if (buf[0] == '#' || !buf[0])
+			continue;
+		cp = buf;
+		if (buf[0] == 'P' && buf[1] == 'H' && buf[2] == 'Y' &&
+		    buf[3] == 'S' && buf[4] == 'D' &&
+		    buf[5] == 'E' && buf[6] == 'S' && /*isspace(buf[7])*/
+		    buf[7] == ' ') {
+			continue;
+		}
+		if (buf[0] == 'P' && buf[1] == 'H' &&
+		    buf[2] == 'Y' && /*isspace(buf[3])*/ buf[3] == ' ') {
+			continue;
+		}
+		if (buf[0] == 'B' && buf[1] == 'I' && buf[2] == 'A' &&
+		    buf[3] == 'S' && /*isspace(buf[4])*/ buf[4] == ' ') {
+			continue;
+		}
+		if (buf[0] == 'L' && /*isspace(buf[1])*/ buf[1] == ' ') {
+			lasthut = lastclass = lastvendor = lastsubclass = -1;
+			/*
+			 * set 1 as pseudo-id to indicate that the parser is
+			 * in a `L' section.
+			 */
+			lastlang = 1;
+			continue;
+		}
+		if (buf[0] == 'C' && /*isspace(buf[1])*/ buf[1] == ' ') {
+			/* class spec */
+			cp = buf+2;
+			while (isspace(*cp))
+				cp++;
+			if (!isxdigit(*cp)) {
+				err("Invalid class spec at line %u", linectr);
+				continue;
+			}
+			u = strtoul(cp, &cp, 16);
+			while (isspace(*cp))
+				cp++;
+			if (!*cp) {
+				err("Invalid class spec at line %u", linectr);
+				continue;
+			}
+			if (new_class(cp, u))
+				err("Duplicate class spec at line %u class %04x %s",
+				    linectr, u, cp);
+			dbg("line %5u class %02x %s", linectr, u, cp);
+			lasthut = lastlang = lastvendor = lastsubclass = -1;
+			lastclass = u;
+			continue;
+		}
+		if (buf[0] == 'A' && buf[1] == 'T' && isspace(buf[2])) {
+			/* audio terminal type spec */
+			continue;
+		}
+		if (buf[0] == 'H' && buf[1] == 'C' && buf[2] == 'C'
+		    && isspace(buf[3])) {
+			/* HID Descriptor bCountryCode */
+			continue;
+		}
+		if (isxdigit(*cp)) {
+			/* vendor */
+			u = strtoul(cp, &cp, 16);
+			while (isspace(*cp))
+				cp++;
+			if (!*cp) {
+				err("Invalid vendor spec at line %u", linectr);
+				continue;
+			}
+			if (new_vendor(cp, u))
+				err("Duplicate vendor spec at line %u vendor %04x %s",
+				    linectr, u, cp);
+			dbg("line %5u vendor %04x %s", linectr, u, cp);
+			lastvendor = u;
+			lasthut = lastlang = lastclass = lastsubclass = -1;
+			continue;
+		}
+		if (buf[0] == '\t' && isxdigit(buf[1])) {
+			/* product or subclass spec */
+			u = strtoul(buf+1, &cp, 16);
+			while (isspace(*cp))
+				cp++;
+			if (!*cp) {
+				err("Invalid product/subclass spec at line %u",
+				    linectr);
+				continue;
+			}
+			if (lastvendor != -1) {
+				if (new_product(cp, lastvendor, u))
+					err("Duplicate product spec at line %u product %04x:%04x %s",
+					    linectr, lastvendor, u, cp);
+				dbg("line %5u product %04x:%04x %s", linectr,
+				    lastvendor, u, cp);
+				continue;
+			}
+			if (lastclass != -1) {
+				if (new_subclass(cp, lastclass, u))
+					err("Duplicate subclass spec at line %u class %02x:%02x %s",
+					    linectr, lastclass, u, cp);
+				dbg("line %5u subclass %02x:%02x %s", linectr,
+				    lastclass, u, cp);
+				lastsubclass = u;
+				continue;
+			}
+			if (lasthut != -1) {
+				/* do not store hut */
+				continue;
+			}
+			if (lastlang != -1) {
+				/* do not store langid */
+				continue;
+			}
+			err("Product/Subclass spec without prior Vendor/Class spec at line %u",
+			    linectr);
+			continue;
+		}
+		if (buf[0] == '\t' && buf[1] == '\t' && isxdigit(buf[2])) {
+			/* protocol spec */
+			u = strtoul(buf+2, &cp, 16);
+			while (isspace(*cp))
+				cp++;
+			if (!*cp) {
+				err("Invalid protocol spec at line %u",
+				    linectr);
+				continue;
+			}
+			if (lastclass != -1 && lastsubclass != -1) {
+				if (new_protocol(cp, lastclass, lastsubclass,
+						 u))
+					err("Duplicate protocol spec at line %u class %02x:%02x:%02x %s",
+					    linectr, lastclass, lastsubclass,
+					    u, cp);
+				dbg("line %5u protocol %02x:%02x:%02x %s",
+				    linectr, lastclass, lastsubclass, u, cp);
+				continue;
+			}
+			err("Protocol spec without prior Class and Subclass spec at line %u",
+			    linectr);
+			continue;
+		}
+		if (buf[0] == 'H' && buf[1] == 'I' &&
+		    buf[2] == 'D' && /*isspace(buf[3])*/ buf[3] == ' ') {
+			continue;
+		}
+		if (buf[0] == 'H' && buf[1] == 'U' &&
+		    buf[2] == 'T' && /*isspace(buf[3])*/ buf[3] == ' ') {
+			lastlang = lastclass = lastvendor = lastsubclass = -1;
+			/*
+			 * set 1 as pseudo-id to indicate that the parser is
+			 * in a `HUT' section.
+			 */
+			lasthut = 1;
+			continue;
+		}
+		if (buf[0] == 'R' && buf[1] == ' ')
+			continue;
+
+		if (buf[0] == 'V' && buf[1] == 'T')
+			continue;
+
+		err("Unknown line at line %u", linectr);
+	}
+}
+
+
+int names_init(char *n)
+{
+	FILE *f;
+
+	f = fopen(n, "r");
+	if (!f)
+		return errno;
+
+	parse(f);
+	fclose(f);
+	return 0;
+}
diff --git a/tools/usb/usbip/libsrc/names.h b/tools/usb/usbip/libsrc/names.h
new file mode 100644
index 000000000000..680926512de2
--- /dev/null
+++ b/tools/usb/usbip/libsrc/names.h
@@ -0,0 +1,41 @@
+/*
+ *      names.h  --  USB name database manipulation routines
+ *
+ *      Copyright (C) 1999, 2000  Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program; if not, write to the Free Software
+ *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *
+ *	Copyright (C) 2005 Takahiro Hirofuchi
+ *	       - names_free() is added.
+ */
+
+#ifndef _NAMES_H
+#define _NAMES_H
+
+#include <sys/types.h>
+
+/* used by usbip_common.c */
+extern const char *names_vendor(u_int16_t vendorid);
+extern const char *names_product(u_int16_t vendorid, u_int16_t productid);
+extern const char *names_class(u_int8_t classid);
+extern const char *names_subclass(u_int8_t classid, u_int8_t subclassid);
+extern const char *names_protocol(u_int8_t classid, u_int8_t subclassid,
+				  u_int8_t protocolid);
+extern int  names_init(char *n);
+extern void names_free(void);
+
+#endif /* _NAMES_H */
diff --git a/tools/usb/usbip/libsrc/sysfs_utils.c b/tools/usb/usbip/libsrc/sysfs_utils.c
new file mode 100644
index 000000000000..36ac88ece0b8
--- /dev/null
+++ b/tools/usb/usbip/libsrc/sysfs_utils.c
@@ -0,0 +1,31 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "sysfs_utils.h"
+#include "usbip_common.h"
+
+int write_sysfs_attribute(const char *attr_path, const char *new_value,
+			  size_t len)
+{
+	int fd;
+	int length;
+
+	fd = open(attr_path, O_WRONLY);
+	if (fd < 0) {
+		dbg("error opening attribute %s", attr_path);
+		return -1;
+	}
+
+	length = write(fd, new_value, len);
+	if (length < 0) {
+		dbg("error writing to attribute %s", attr_path);
+		close(fd);
+		return -1;
+	}
+
+	close(fd);
+
+	return 0;
+}
diff --git a/tools/usb/usbip/libsrc/sysfs_utils.h b/tools/usb/usbip/libsrc/sysfs_utils.h
new file mode 100644
index 000000000000..32ac1d105d18
--- /dev/null
+++ b/tools/usb/usbip/libsrc/sysfs_utils.h
@@ -0,0 +1,8 @@
+
+#ifndef __SYSFS_UTILS_H
+#define __SYSFS_UTILS_H
+
+int write_sysfs_attribute(const char *attr_path, const char *new_value,
+			  size_t len);
+
+#endif
diff --git a/tools/usb/usbip/libsrc/usbip_common.c b/tools/usb/usbip/libsrc/usbip_common.c
new file mode 100644
index 000000000000..ac73710473de
--- /dev/null
+++ b/tools/usb/usbip/libsrc/usbip_common.c
@@ -0,0 +1,285 @@
+/*
+ * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ */
+
+#include <libudev.h>
+#include "usbip_common.h"
+#include "names.h"
+
+#undef  PROGNAME
+#define PROGNAME "libusbip"
+
+int usbip_use_syslog;
+int usbip_use_stderr;
+int usbip_use_debug;
+
+extern struct udev *udev_context;
+
+struct speed_string {
+	int num;
+	char *speed;
+	char *desc;
+};
+
+static const struct speed_string speed_strings[] = {
+	{ USB_SPEED_UNKNOWN, "unknown", "Unknown Speed"},
+	{ USB_SPEED_LOW,  "1.5", "Low Speed(1.5Mbps)"  },
+	{ USB_SPEED_FULL, "12",  "Full Speed(12Mbps)" },
+	{ USB_SPEED_HIGH, "480", "High Speed(480Mbps)" },
+	{ USB_SPEED_WIRELESS, "53.3-480", "Wireless"},
+	{ USB_SPEED_SUPER, "5000", "Super Speed(5000Mbps)" },
+	{ 0, NULL, NULL }
+};
+
+struct portst_string {
+	int num;
+	char *desc;
+};
+
+static struct portst_string portst_strings[] = {
+	{ SDEV_ST_AVAILABLE,	"Device Available" },
+	{ SDEV_ST_USED,		"Device in Use" },
+	{ SDEV_ST_ERROR,	"Device Error"},
+	{ VDEV_ST_NULL,		"Port Available"},
+	{ VDEV_ST_NOTASSIGNED,	"Port Initializing"},
+	{ VDEV_ST_USED,		"Port in Use"},
+	{ VDEV_ST_ERROR,	"Port Error"},
+	{ 0, NULL}
+};
+
+const char *usbip_status_string(int32_t status)
+{
+	for (int i = 0; portst_strings[i].desc != NULL; i++)
+		if (portst_strings[i].num == status)
+			return portst_strings[i].desc;
+
+	return "Unknown Status";
+}
+
+const char *usbip_speed_string(int num)
+{
+	for (int i = 0; speed_strings[i].speed != NULL; i++)
+		if (speed_strings[i].num == num)
+			return speed_strings[i].desc;
+
+	return "Unknown Speed";
+}
+
+
+#define DBG_UDEV_INTEGER(name)\
+	dbg("%-20s = %x", to_string(name), (int) udev->name)
+
+#define DBG_UINF_INTEGER(name)\
+	dbg("%-20s = %x", to_string(name), (int) uinf->name)
+
+void dump_usb_interface(struct usbip_usb_interface *uinf)
+{
+	char buff[100];
+
+	usbip_names_get_class(buff, sizeof(buff),
+			uinf->bInterfaceClass,
+			uinf->bInterfaceSubClass,
+			uinf->bInterfaceProtocol);
+	dbg("%-20s = %s", "Interface(C/SC/P)", buff);
+}
+
+void dump_usb_device(struct usbip_usb_device *udev)
+{
+	char buff[100];
+
+	dbg("%-20s = %s", "path",  udev->path);
+	dbg("%-20s = %s", "busid", udev->busid);
+
+	usbip_names_get_class(buff, sizeof(buff),
+			udev->bDeviceClass,
+			udev->bDeviceSubClass,
+			udev->bDeviceProtocol);
+	dbg("%-20s = %s", "Device(C/SC/P)", buff);
+
+	DBG_UDEV_INTEGER(bcdDevice);
+
+	usbip_names_get_product(buff, sizeof(buff),
+			udev->idVendor,
+			udev->idProduct);
+	dbg("%-20s = %s", "Vendor/Product", buff);
+
+	DBG_UDEV_INTEGER(bNumConfigurations);
+	DBG_UDEV_INTEGER(bNumInterfaces);
+
+	dbg("%-20s = %s", "speed",
+			usbip_speed_string(udev->speed));
+
+	DBG_UDEV_INTEGER(busnum);
+	DBG_UDEV_INTEGER(devnum);
+}
+
+
+int read_attr_value(struct udev_device *dev, const char *name,
+		    const char *format)
+{
+	const char *attr;
+	int num = 0;
+	int ret;
+
+	attr = udev_device_get_sysattr_value(dev, name);
+	if (!attr) {
+		err("udev_device_get_sysattr_value failed");
+		goto err;
+	}
+
+	/* The client chooses the device configuration
+	 * when attaching it so right after being bound
+	 * to usbip-host on the server the device will
+	 * have no configuration.
+	 * Therefore, attributes such as bConfigurationValue
+	 * and bNumInterfaces will not exist and sscanf will
+	 * fail. Check for these cases and don't treat them
+	 * as errors.
+	 */
+
+	ret = sscanf(attr, format, &num);
+	if (ret < 1) {
+		if (strcmp(name, "bConfigurationValue") &&
+				strcmp(name, "bNumInterfaces")) {
+			err("sscanf failed for attribute %s", name);
+			goto err;
+		}
+	}
+
+err:
+
+	return num;
+}
+
+
+int read_attr_speed(struct udev_device *dev)
+{
+	const char *speed;
+
+	speed = udev_device_get_sysattr_value(dev, "speed");
+	if (!speed) {
+		err("udev_device_get_sysattr_value failed");
+		goto err;
+	}
+
+	for (int i = 0; speed_strings[i].speed != NULL; i++) {
+		if (!strcmp(speed, speed_strings[i].speed))
+			return speed_strings[i].num;
+	}
+
+err:
+
+	return USB_SPEED_UNKNOWN;
+}
+
+#define READ_ATTR(object, type, dev, name, format)			      \
+	do {								      \
+		(object)->name = (type) read_attr_value(dev, to_string(name), \
+							format);	      \
+	} while (0)
+
+
+int read_usb_device(struct udev_device *sdev, struct usbip_usb_device *udev)
+{
+	uint32_t busnum, devnum;
+	const char *path, *name;
+
+	READ_ATTR(udev, uint8_t,  sdev, bDeviceClass,		"%02x\n");
+	READ_ATTR(udev, uint8_t,  sdev, bDeviceSubClass,	"%02x\n");
+	READ_ATTR(udev, uint8_t,  sdev, bDeviceProtocol,	"%02x\n");
+
+	READ_ATTR(udev, uint16_t, sdev, idVendor,		"%04x\n");
+	READ_ATTR(udev, uint16_t, sdev, idProduct,		"%04x\n");
+	READ_ATTR(udev, uint16_t, sdev, bcdDevice,		"%04x\n");
+
+	READ_ATTR(udev, uint8_t,  sdev, bConfigurationValue,	"%02x\n");
+	READ_ATTR(udev, uint8_t,  sdev, bNumConfigurations,	"%02x\n");
+	READ_ATTR(udev, uint8_t,  sdev, bNumInterfaces,		"%02x\n");
+
+	READ_ATTR(udev, uint8_t,  sdev, devnum,			"%d\n");
+	udev->speed = read_attr_speed(sdev);
+
+	path = udev_device_get_syspath(sdev);
+	name = udev_device_get_sysname(sdev);
+
+	strncpy(udev->path,  path,  SYSFS_PATH_MAX);
+	strncpy(udev->busid, name, SYSFS_BUS_ID_SIZE);
+
+	sscanf(name, "%u-%u", &busnum, &devnum);
+	udev->busnum = busnum;
+
+	return 0;
+}
+
+int read_usb_interface(struct usbip_usb_device *udev, int i,
+		       struct usbip_usb_interface *uinf)
+{
+	char busid[SYSFS_BUS_ID_SIZE];
+	struct udev_device *sif;
+
+	sprintf(busid, "%s:%d.%d", udev->busid, udev->bConfigurationValue, i);
+
+	sif = udev_device_new_from_subsystem_sysname(udev_context, "usb", busid);
+	if (!sif) {
+		err("udev_device_new_from_subsystem_sysname %s failed", busid);
+		return -1;
+	}
+
+	READ_ATTR(uinf, uint8_t,  sif, bInterfaceClass,		"%02x\n");
+	READ_ATTR(uinf, uint8_t,  sif, bInterfaceSubClass,	"%02x\n");
+	READ_ATTR(uinf, uint8_t,  sif, bInterfaceProtocol,	"%02x\n");
+
+	return 0;
+}
+
+int usbip_names_init(char *f)
+{
+	return names_init(f);
+}
+
+void usbip_names_free(void)
+{
+	names_free();
+}
+
+void usbip_names_get_product(char *buff, size_t size, uint16_t vendor,
+			     uint16_t product)
+{
+	const char *prod, *vend;
+
+	prod = names_product(vendor, product);
+	if (!prod)
+		prod = "unknown product";
+
+
+	vend = names_vendor(vendor);
+	if (!vend)
+		vend = "unknown vendor";
+
+	snprintf(buff, size, "%s : %s (%04x:%04x)", vend, prod, vendor, product);
+}
+
+void usbip_names_get_class(char *buff, size_t size, uint8_t class,
+			   uint8_t subclass, uint8_t protocol)
+{
+	const char *c, *s, *p;
+
+	if (class == 0 && subclass == 0 && protocol == 0) {
+		snprintf(buff, size, "(Defined at Interface level) (%02x/%02x/%02x)", class, subclass, protocol);
+		return;
+	}
+
+	p = names_protocol(class, subclass, protocol);
+	if (!p)
+		p = "unknown protocol";
+
+	s = names_subclass(class, subclass);
+	if (!s)
+		s = "unknown subclass";
+
+	c = names_class(class);
+	if (!c)
+		c = "unknown class";
+
+	snprintf(buff, size, "%s / %s / %s (%02x/%02x/%02x)", c, s, p, class, subclass, protocol);
+}
diff --git a/tools/usb/usbip/libsrc/usbip_common.h b/tools/usb/usbip/libsrc/usbip_common.h
new file mode 100644
index 000000000000..5a0e95edf4df
--- /dev/null
+++ b/tools/usb/usbip/libsrc/usbip_common.h
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ */
+
+#ifndef __USBIP_COMMON_H
+#define __USBIP_COMMON_H
+
+#include <libudev.h>
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <syslog.h>
+#include <unistd.h>
+#include <linux/usb/ch9.h>
+#include "../../uapi/usbip.h"
+
+#ifndef USBIDS_FILE
+#define USBIDS_FILE "/usr/share/hwdata/usb.ids"
+#endif
+
+#ifndef VHCI_STATE_PATH
+#define VHCI_STATE_PATH "/var/run/vhci_hcd"
+#endif
+
+/* kernel module names */
+#define USBIP_CORE_MOD_NAME	"usbip-core"
+#define USBIP_HOST_DRV_NAME	"usbip-host"
+#define USBIP_VHCI_DRV_NAME	"vhci_hcd"
+
+/* sysfs constants */
+#define SYSFS_MNT_PATH         "/sys"
+#define SYSFS_BUS_NAME         "bus"
+#define SYSFS_BUS_TYPE         "usb"
+#define SYSFS_DRIVERS_NAME     "drivers"
+
+#define SYSFS_PATH_MAX		256
+#define SYSFS_BUS_ID_SIZE	32
+
+extern int usbip_use_syslog;
+extern int usbip_use_stderr;
+extern int usbip_use_debug ;
+
+#define PROGNAME "usbip"
+
+#define pr_fmt(fmt)	"%s: %s: " fmt "\n", PROGNAME
+#define dbg_fmt(fmt)	pr_fmt("%s:%d:[%s] " fmt), "debug",	\
+		        __FILE__, __LINE__, __func__
+
+#define err(fmt, args...)						\
+	do {								\
+		if (usbip_use_syslog) {					\
+			syslog(LOG_ERR, pr_fmt(fmt), "error", ##args);	\
+		}							\
+		if (usbip_use_stderr) {					\
+			fprintf(stderr, pr_fmt(fmt), "error", ##args);	\
+		}							\
+	} while (0)
+
+#define info(fmt, args...)						\
+	do {								\
+		if (usbip_use_syslog) {					\
+			syslog(LOG_INFO, pr_fmt(fmt), "info", ##args);	\
+		}							\
+		if (usbip_use_stderr) {					\
+			fprintf(stderr, pr_fmt(fmt), "info", ##args);	\
+		}							\
+	} while (0)
+
+#define dbg(fmt, args...)						\
+	do {								\
+	if (usbip_use_debug) {						\
+		if (usbip_use_syslog) {					\
+			syslog(LOG_DEBUG, dbg_fmt(fmt), ##args);	\
+		}							\
+		if (usbip_use_stderr) {					\
+			fprintf(stderr, dbg_fmt(fmt), ##args);		\
+		}							\
+	}								\
+	} while (0)
+
+#define BUG()						\
+	do {						\
+		err("sorry, it's a bug!");		\
+		abort();				\
+	} while (0)
+
+struct usbip_usb_interface {
+	uint8_t bInterfaceClass;
+	uint8_t bInterfaceSubClass;
+	uint8_t bInterfaceProtocol;
+	uint8_t padding;	/* alignment */
+} __attribute__((packed));
+
+struct usbip_usb_device {
+	char path[SYSFS_PATH_MAX];
+	char busid[SYSFS_BUS_ID_SIZE];
+
+	uint32_t busnum;
+	uint32_t devnum;
+	uint32_t speed;
+
+	uint16_t idVendor;
+	uint16_t idProduct;
+	uint16_t bcdDevice;
+
+	uint8_t bDeviceClass;
+	uint8_t bDeviceSubClass;
+	uint8_t bDeviceProtocol;
+	uint8_t bConfigurationValue;
+	uint8_t bNumConfigurations;
+	uint8_t bNumInterfaces;
+} __attribute__((packed));
+
+#define to_string(s)	#s
+
+void dump_usb_interface(struct usbip_usb_interface *);
+void dump_usb_device(struct usbip_usb_device *);
+int read_usb_device(struct udev_device *sdev, struct usbip_usb_device *udev);
+int read_attr_value(struct udev_device *dev, const char *name,
+		    const char *format);
+int read_usb_interface(struct usbip_usb_device *udev, int i,
+		       struct usbip_usb_interface *uinf);
+
+const char *usbip_speed_string(int num);
+const char *usbip_status_string(int32_t status);
+
+int usbip_names_init(char *);
+void usbip_names_free(void);
+void usbip_names_get_product(char *buff, size_t size, uint16_t vendor,
+			     uint16_t product);
+void usbip_names_get_class(char *buff, size_t size, uint8_t class,
+			   uint8_t subclass, uint8_t protocol);
+
+#endif /* __USBIP_COMMON_H */
diff --git a/tools/usb/usbip/libsrc/usbip_host_driver.c b/tools/usb/usbip/libsrc/usbip_host_driver.c
new file mode 100644
index 000000000000..bef08d5c44e8
--- /dev/null
+++ b/tools/usb/usbip/libsrc/usbip_host_driver.c
@@ -0,0 +1,280 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <libudev.h>
+
+#include "usbip_common.h"
+#include "usbip_host_driver.h"
+#include "list.h"
+#include "sysfs_utils.h"
+
+#undef  PROGNAME
+#define PROGNAME "libusbip"
+
+struct usbip_host_driver *host_driver;
+struct udev *udev_context;
+
+static int32_t read_attr_usbip_status(struct usbip_usb_device *udev)
+{
+	char status_attr_path[SYSFS_PATH_MAX];
+	int fd;
+	int length;
+	char status;
+	int value = 0;
+
+	snprintf(status_attr_path, SYSFS_PATH_MAX, "%s/usbip_status",
+		 udev->path);
+
+	fd = open(status_attr_path, O_RDONLY);
+	if (fd < 0) {
+		err("error opening attribute %s", status_attr_path);
+		return -1;
+	}
+
+	length = read(fd, &status, 1);
+	if (length < 0) {
+		err("error reading attribute %s", status_attr_path);
+		close(fd);
+		return -1;
+	}
+
+	value = atoi(&status);
+
+	return value;
+}
+
+static
+struct usbip_exported_device *usbip_exported_device_new(const char *sdevpath)
+{
+	struct usbip_exported_device *edev = NULL;
+	struct usbip_exported_device *edev_old;
+	size_t size;
+	int i;
+
+	edev = calloc(1, sizeof(struct usbip_exported_device));
+
+	edev->sudev = udev_device_new_from_syspath(udev_context, sdevpath);
+	if (!edev->sudev) {
+		err("udev_device_new_from_syspath: %s", sdevpath);
+		goto err;
+	}
+
+	read_usb_device(edev->sudev, &edev->udev);
+
+	edev->status = read_attr_usbip_status(&edev->udev);
+	if (edev->status < 0)
+		goto err;
+
+	/* reallocate buffer to include usb interface data */
+	size = sizeof(struct usbip_exported_device) +
+		edev->udev.bNumInterfaces * sizeof(struct usbip_usb_interface);
+
+	edev_old = edev;
+	edev = realloc(edev, size);
+	if (!edev) {
+		edev = edev_old;
+		dbg("realloc failed");
+		goto err;
+	}
+
+	for (i = 0; i < edev->udev.bNumInterfaces; i++)
+		read_usb_interface(&edev->udev, i, &edev->uinf[i]);
+
+	return edev;
+err:
+	if (edev->sudev)
+		udev_device_unref(edev->sudev);
+	if (edev)
+		free(edev);
+
+	return NULL;
+}
+
+static int refresh_exported_devices(void)
+{
+	struct usbip_exported_device *edev;
+	struct udev_enumerate *enumerate;
+	struct udev_list_entry *devices, *dev_list_entry;
+	struct udev_device *dev;
+	const char *path;
+	const char *driver;
+
+	enumerate = udev_enumerate_new(udev_context);
+	udev_enumerate_add_match_subsystem(enumerate, "usb");
+	udev_enumerate_scan_devices(enumerate);
+
+	devices = udev_enumerate_get_list_entry(enumerate);
+
+	udev_list_entry_foreach(dev_list_entry, devices) {
+		path = udev_list_entry_get_name(dev_list_entry);
+		dev = udev_device_new_from_syspath(udev_context, path);
+		if (dev == NULL)
+			continue;
+
+		/* Check whether device uses usbip-host driver. */
+		driver = udev_device_get_driver(dev);
+		if (driver != NULL && !strcmp(driver, USBIP_HOST_DRV_NAME)) {
+			edev = usbip_exported_device_new(path);
+			if (!edev) {
+				dbg("usbip_exported_device_new failed");
+				continue;
+			}
+
+			list_add(&edev->node, &host_driver->edev_list);
+			host_driver->ndevs++;
+		}
+	}
+
+	return 0;
+}
+
+static void usbip_exported_device_destroy(void)
+{
+	struct list_head *i, *tmp;
+	struct usbip_exported_device *edev;
+
+	list_for_each_safe(i, tmp, &host_driver->edev_list) {
+		edev = list_entry(i, struct usbip_exported_device, node);
+		list_del(i);
+		free(edev);
+	}
+}
+
+int usbip_host_driver_open(void)
+{
+	int rc;
+
+	udev_context = udev_new();
+	if (!udev_context) {
+		err("udev_new failed");
+		return -1;
+	}
+
+	host_driver = calloc(1, sizeof(*host_driver));
+
+	host_driver->ndevs = 0;
+	INIT_LIST_HEAD(&host_driver->edev_list);
+
+	rc = refresh_exported_devices();
+	if (rc < 0)
+		goto err_free_host_driver;
+
+	return 0;
+
+err_free_host_driver:
+	free(host_driver);
+	host_driver = NULL;
+
+	udev_unref(udev_context);
+
+	return -1;
+}
+
+void usbip_host_driver_close(void)
+{
+	if (!host_driver)
+		return;
+
+	usbip_exported_device_destroy();
+
+	free(host_driver);
+	host_driver = NULL;
+
+	udev_unref(udev_context);
+}
+
+int usbip_host_refresh_device_list(void)
+{
+	int rc;
+
+	usbip_exported_device_destroy();
+
+	host_driver->ndevs = 0;
+	INIT_LIST_HEAD(&host_driver->edev_list);
+
+	rc = refresh_exported_devices();
+	if (rc < 0)
+		return -1;
+
+	return 0;
+}
+
+int usbip_host_export_device(struct usbip_exported_device *edev, int sockfd)
+{
+	char attr_name[] = "usbip_sockfd";
+	char sockfd_attr_path[SYSFS_PATH_MAX];
+	char sockfd_buff[30];
+	int ret;
+
+	if (edev->status != SDEV_ST_AVAILABLE) {
+		dbg("device not available: %s", edev->udev.busid);
+		switch (edev->status) {
+		case SDEV_ST_ERROR:
+			dbg("status SDEV_ST_ERROR");
+			break;
+		case SDEV_ST_USED:
+			dbg("status SDEV_ST_USED");
+			break;
+		default:
+			dbg("status unknown: 0x%x", edev->status);
+		}
+		return -1;
+	}
+
+	/* only the first interface is true */
+	snprintf(sockfd_attr_path, sizeof(sockfd_attr_path), "%s/%s",
+		 edev->udev.path, attr_name);
+
+	snprintf(sockfd_buff, sizeof(sockfd_buff), "%d\n", sockfd);
+
+	ret = write_sysfs_attribute(sockfd_attr_path, sockfd_buff,
+				    strlen(sockfd_buff));
+	if (ret < 0) {
+		err("write_sysfs_attribute failed: sockfd %s to %s",
+		    sockfd_buff, sockfd_attr_path);
+		return ret;
+	}
+
+	info("connect: %s", edev->udev.busid);
+
+	return ret;
+}
+
+struct usbip_exported_device *usbip_host_get_device(int num)
+{
+	struct list_head *i;
+	struct usbip_exported_device *edev;
+	int cnt = 0;
+
+	list_for_each(i, &host_driver->edev_list) {
+		edev = list_entry(i, struct usbip_exported_device, node);
+		if (num == cnt)
+			return edev;
+		else
+			cnt++;
+	}
+
+	return NULL;
+}
diff --git a/tools/usb/usbip/libsrc/usbip_host_driver.h b/tools/usb/usbip/libsrc/usbip_host_driver.h
new file mode 100644
index 000000000000..2a31f855c616
--- /dev/null
+++ b/tools/usb/usbip/libsrc/usbip_host_driver.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __USBIP_HOST_DRIVER_H
+#define __USBIP_HOST_DRIVER_H
+
+#include <stdint.h>
+#include "usbip_common.h"
+#include "list.h"
+
+struct usbip_host_driver {
+	int ndevs;
+	/* list of exported device */
+	struct list_head edev_list;
+};
+
+struct usbip_exported_device {
+	struct udev_device *sudev;
+	int32_t status;
+	struct usbip_usb_device udev;
+	struct list_head node;
+	struct usbip_usb_interface uinf[];
+};
+
+extern struct usbip_host_driver *host_driver;
+
+int usbip_host_driver_open(void);
+void usbip_host_driver_close(void);
+
+int usbip_host_refresh_device_list(void);
+int usbip_host_export_device(struct usbip_exported_device *edev, int sockfd);
+struct usbip_exported_device *usbip_host_get_device(int num);
+
+#endif /* __USBIP_HOST_DRIVER_H */
diff --git a/tools/usb/usbip/libsrc/vhci_driver.c b/tools/usb/usbip/libsrc/vhci_driver.c
new file mode 100644
index 000000000000..ad9204773533
--- /dev/null
+++ b/tools/usb/usbip/libsrc/vhci_driver.c
@@ -0,0 +1,411 @@
+/*
+ * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ */
+
+#include "usbip_common.h"
+#include "vhci_driver.h"
+#include <limits.h>
+#include <netdb.h>
+#include <libudev.h>
+#include "sysfs_utils.h"
+
+#undef  PROGNAME
+#define PROGNAME "libusbip"
+
+struct usbip_vhci_driver *vhci_driver;
+struct udev *udev_context;
+
+static struct usbip_imported_device *
+imported_device_init(struct usbip_imported_device *idev, char *busid)
+{
+	struct udev_device *sudev;
+
+	sudev = udev_device_new_from_subsystem_sysname(udev_context,
+						       "usb", busid);
+	if (!sudev) {
+		dbg("udev_device_new_from_subsystem_sysname failed: %s", busid);
+		goto err;
+	}
+	read_usb_device(sudev, &idev->udev);
+	udev_device_unref(sudev);
+
+	return idev;
+
+err:
+	return NULL;
+}
+
+
+
+static int parse_status(const char *value)
+{
+	int ret = 0;
+	char *c;
+
+
+	for (int i = 0; i < vhci_driver->nports; i++)
+		memset(&vhci_driver->idev[i], 0, sizeof(vhci_driver->idev[i]));
+
+
+	/* skip a header line */
+	c = strchr(value, '\n');
+	if (!c)
+		return -1;
+	c++;
+
+	while (*c != '\0') {
+		int port, status, speed, devid;
+		unsigned long socket;
+		char lbusid[SYSFS_BUS_ID_SIZE];
+
+		ret = sscanf(c, "%d %d %d %x %lx %31s\n",
+				&port, &status, &speed,
+				&devid, &socket, lbusid);
+
+		if (ret < 5) {
+			dbg("sscanf failed: %d", ret);
+			BUG();
+		}
+
+		dbg("port %d status %d speed %d devid %x",
+				port, status, speed, devid);
+		dbg("socket %lx lbusid %s", socket, lbusid);
+
+
+		/* if a device is connected, look at it */
+		{
+			struct usbip_imported_device *idev = &vhci_driver->idev[port];
+
+			idev->port	= port;
+			idev->status	= status;
+
+			idev->devid	= devid;
+
+			idev->busnum	= (devid >> 16);
+			idev->devnum	= (devid & 0x0000ffff);
+
+			if (idev->status != VDEV_ST_NULL
+			    && idev->status != VDEV_ST_NOTASSIGNED) {
+				idev = imported_device_init(idev, lbusid);
+				if (!idev) {
+					dbg("imported_device_init failed");
+					return -1;
+				}
+			}
+		}
+
+
+		/* go to the next line */
+		c = strchr(c, '\n');
+		if (!c)
+			break;
+		c++;
+	}
+
+	dbg("exit");
+
+	return 0;
+}
+
+static int refresh_imported_device_list(void)
+{
+	const char *attr_status;
+
+	attr_status = udev_device_get_sysattr_value(vhci_driver->hc_device,
+					       "status");
+	if (!attr_status) {
+		err("udev_device_get_sysattr_value failed");
+		return -1;
+	}
+
+	return parse_status(attr_status);
+}
+
+static int get_nports(void)
+{
+	char *c;
+	int nports = 0;
+	const char *attr_status;
+
+	attr_status = udev_device_get_sysattr_value(vhci_driver->hc_device,
+					       "status");
+	if (!attr_status) {
+		err("udev_device_get_sysattr_value failed");
+		return -1;
+	}
+
+	/* skip a header line */
+	c = strchr(attr_status, '\n');
+	if (!c)
+		return 0;
+	c++;
+
+	while (*c != '\0') {
+		/* go to the next line */
+		c = strchr(c, '\n');
+		if (!c)
+			return nports;
+		c++;
+		nports += 1;
+	}
+
+	return nports;
+}
+
+/*
+ * Read the given port's record.
+ *
+ * To avoid buffer overflow we will read the entire line and
+ * validate each part's size. The initial buffer is padded by 4 to
+ * accommodate the 2 spaces, 1 newline and an additional character
+ * which is needed to properly validate the 3rd part without it being
+ * truncated to an acceptable length.
+ */
+static int read_record(int rhport, char *host, unsigned long host_len,
+		char *port, unsigned long port_len, char *busid)
+{
+	int part;
+	FILE *file;
+	char path[PATH_MAX+1];
+	char *buffer, *start, *end;
+	char delim[] = {' ', ' ', '\n'};
+	int max_len[] = {(int)host_len, (int)port_len, SYSFS_BUS_ID_SIZE};
+	size_t buffer_len = host_len + port_len + SYSFS_BUS_ID_SIZE + 4;
+
+	buffer = malloc(buffer_len);
+	if (!buffer)
+		return -1;
+
+	snprintf(path, PATH_MAX, VHCI_STATE_PATH"/port%d", rhport);
+
+	file = fopen(path, "r");
+	if (!file) {
+		err("fopen");
+		free(buffer);
+		return -1;
+	}
+
+	if (fgets(buffer, buffer_len, file) == NULL) {
+		err("fgets");
+		free(buffer);
+		fclose(file);
+		return -1;
+	}
+	fclose(file);
+
+	/* validate the length of each of the 3 parts */
+	start = buffer;
+	for (part = 0; part < 3; part++) {
+		end = strchr(start, delim[part]);
+		if (end == NULL || (end - start) > max_len[part]) {
+			free(buffer);
+			return -1;
+		}
+		start = end + 1;
+	}
+
+	if (sscanf(buffer, "%s %s %s\n", host, port, busid) != 3) {
+		err("sscanf");
+		free(buffer);
+		return -1;
+	}
+
+	free(buffer);
+
+	return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int usbip_vhci_driver_open(void)
+{
+	udev_context = udev_new();
+	if (!udev_context) {
+		err("udev_new failed");
+		return -1;
+	}
+
+	vhci_driver = calloc(1, sizeof(struct usbip_vhci_driver));
+
+	/* will be freed in usbip_driver_close() */
+	vhci_driver->hc_device =
+		udev_device_new_from_subsystem_sysname(udev_context,
+						       USBIP_VHCI_BUS_TYPE,
+						       USBIP_VHCI_DRV_NAME);
+	if (!vhci_driver->hc_device) {
+		err("udev_device_new_from_subsystem_sysname failed");
+		goto err;
+	}
+
+	vhci_driver->nports = get_nports();
+
+	dbg("available ports: %d", vhci_driver->nports);
+
+	if (refresh_imported_device_list())
+		goto err;
+
+	return 0;
+
+err:
+	udev_device_unref(vhci_driver->hc_device);
+
+	if (vhci_driver)
+		free(vhci_driver);
+
+	vhci_driver = NULL;
+
+	udev_unref(udev_context);
+
+	return -1;
+}
+
+
+void usbip_vhci_driver_close(void)
+{
+	if (!vhci_driver)
+		return;
+
+	udev_device_unref(vhci_driver->hc_device);
+
+	free(vhci_driver);
+
+	vhci_driver = NULL;
+
+	udev_unref(udev_context);
+}
+
+
+int usbip_vhci_refresh_device_list(void)
+{
+
+	if (refresh_imported_device_list())
+		goto err;
+
+	return 0;
+err:
+	dbg("failed to refresh device list");
+	return -1;
+}
+
+
+int usbip_vhci_get_free_port(void)
+{
+	for (int i = 0; i < vhci_driver->nports; i++) {
+		if (vhci_driver->idev[i].status == VDEV_ST_NULL)
+			return i;
+	}
+
+	return -1;
+}
+
+int usbip_vhci_attach_device2(uint8_t port, int sockfd, uint32_t devid,
+		uint32_t speed) {
+	char buff[200]; /* what size should be ? */
+	char attach_attr_path[SYSFS_PATH_MAX];
+	char attr_attach[] = "attach";
+	const char *path;
+	int ret;
+
+	snprintf(buff, sizeof(buff), "%u %d %u %u",
+			port, sockfd, devid, speed);
+	dbg("writing: %s", buff);
+
+	path = udev_device_get_syspath(vhci_driver->hc_device);
+	snprintf(attach_attr_path, sizeof(attach_attr_path), "%s/%s",
+		 path, attr_attach);
+	dbg("attach attribute path: %s", attach_attr_path);
+
+	ret = write_sysfs_attribute(attach_attr_path, buff, strlen(buff));
+	if (ret < 0) {
+		dbg("write_sysfs_attribute failed");
+		return -1;
+	}
+
+	dbg("attached port: %d", port);
+
+	return 0;
+}
+
+static unsigned long get_devid(uint8_t busnum, uint8_t devnum)
+{
+	return (busnum << 16) | devnum;
+}
+
+/* will be removed */
+int usbip_vhci_attach_device(uint8_t port, int sockfd, uint8_t busnum,
+		uint8_t devnum, uint32_t speed)
+{
+	int devid = get_devid(busnum, devnum);
+
+	return usbip_vhci_attach_device2(port, sockfd, devid, speed);
+}
+
+int usbip_vhci_detach_device(uint8_t port)
+{
+	char detach_attr_path[SYSFS_PATH_MAX];
+	char attr_detach[] = "detach";
+	char buff[200]; /* what size should be ? */
+	const char *path;
+	int ret;
+
+	snprintf(buff, sizeof(buff), "%u", port);
+	dbg("writing: %s", buff);
+
+	path = udev_device_get_syspath(vhci_driver->hc_device);
+	snprintf(detach_attr_path, sizeof(detach_attr_path), "%s/%s",
+		 path, attr_detach);
+	dbg("detach attribute path: %s", detach_attr_path);
+
+	ret = write_sysfs_attribute(detach_attr_path, buff, strlen(buff));
+	if (ret < 0) {
+		dbg("write_sysfs_attribute failed");
+		return -1;
+	}
+
+	dbg("detached port: %d", port);
+
+	return 0;
+}
+
+int usbip_vhci_imported_device_dump(struct usbip_imported_device *idev)
+{
+	char product_name[100];
+	char host[NI_MAXHOST] = "unknown host";
+	char serv[NI_MAXSERV] = "unknown port";
+	char remote_busid[SYSFS_BUS_ID_SIZE];
+	int ret;
+	int read_record_error = 0;
+
+	if (idev->status == VDEV_ST_NULL || idev->status == VDEV_ST_NOTASSIGNED)
+		return 0;
+
+	ret = read_record(idev->port, host, sizeof(host), serv, sizeof(serv),
+			  remote_busid);
+	if (ret) {
+		err("read_record");
+		read_record_error = 1;
+	}
+
+	printf("Port %02d: <%s> at %s\n", idev->port,
+	       usbip_status_string(idev->status),
+	       usbip_speed_string(idev->udev.speed));
+
+	usbip_names_get_product(product_name, sizeof(product_name),
+				idev->udev.idVendor, idev->udev.idProduct);
+
+	printf("       %s\n",  product_name);
+
+	if (!read_record_error) {
+		printf("%10s -> usbip://%s:%s/%s\n", idev->udev.busid,
+		       host, serv, remote_busid);
+		printf("%10s -> remote bus/dev %03d/%03d\n", " ",
+		       idev->busnum, idev->devnum);
+	} else {
+		printf("%10s -> unknown host, remote port and remote busid\n",
+		       idev->udev.busid);
+		printf("%10s -> remote bus/dev %03d/%03d\n", " ",
+		       idev->busnum, idev->devnum);
+	}
+
+	return 0;
+}
diff --git a/tools/usb/usbip/libsrc/vhci_driver.h b/tools/usb/usbip/libsrc/vhci_driver.h
new file mode 100644
index 000000000000..fa2316cf2cac
--- /dev/null
+++ b/tools/usb/usbip/libsrc/vhci_driver.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ */
+
+#ifndef __VHCI_DRIVER_H
+#define __VHCI_DRIVER_H
+
+#include <libudev.h>
+#include <stdint.h>
+
+#include "usbip_common.h"
+
+#define USBIP_VHCI_BUS_TYPE "platform"
+#define MAXNPORT 128
+
+struct usbip_imported_device {
+	uint8_t port;
+	uint32_t status;
+
+	uint32_t devid;
+
+	uint8_t busnum;
+	uint8_t devnum;
+
+	/* usbip_class_device list */
+	struct usbip_usb_device udev;
+};
+
+struct usbip_vhci_driver {
+
+	/* /sys/devices/platform/vhci_hcd */
+	struct udev_device *hc_device;
+
+	int nports;
+	struct usbip_imported_device idev[MAXNPORT];
+};
+
+
+extern struct usbip_vhci_driver *vhci_driver;
+
+int usbip_vhci_driver_open(void);
+void usbip_vhci_driver_close(void);
+
+int  usbip_vhci_refresh_device_list(void);
+
+
+int usbip_vhci_get_free_port(void);
+int usbip_vhci_attach_device2(uint8_t port, int sockfd, uint32_t devid,
+		uint32_t speed);
+
+/* will be removed */
+int usbip_vhci_attach_device(uint8_t port, int sockfd, uint8_t busnum,
+		uint8_t devnum, uint32_t speed);
+
+int usbip_vhci_detach_device(uint8_t port);
+
+int usbip_vhci_imported_device_dump(struct usbip_imported_device *idev);
+
+#endif /* __VHCI_DRIVER_H */
diff --git a/tools/usb/usbip/src/Makefile.am b/tools/usb/usbip/src/Makefile.am
new file mode 100644
index 000000000000..e81a4ebadeff
--- /dev/null
+++ b/tools/usb/usbip/src/Makefile.am
@@ -0,0 +1,11 @@
+AM_CPPFLAGS = -I$(top_srcdir)/libsrc -DUSBIDS_FILE='"@USBIDS_DIR@/usb.ids"'
+AM_CFLAGS   = @EXTRA_CFLAGS@
+LDADD       = $(top_builddir)/libsrc/libusbip.la
+
+sbin_PROGRAMS := usbip usbipd
+
+usbip_SOURCES := usbip.h utils.h usbip.c utils.c usbip_network.c \
+		 usbip_attach.c usbip_detach.c usbip_list.c \
+		 usbip_bind.c usbip_unbind.c usbip_port.c
+
+usbipd_SOURCES := usbip_network.h usbipd.c usbip_network.c
diff --git a/tools/usb/usbip/src/usbip.c b/tools/usb/usbip/src/usbip.c
new file mode 100644
index 000000000000..d7599d943529
--- /dev/null
+++ b/tools/usb/usbip/src/usbip.c
@@ -0,0 +1,201 @@
+/*
+ * command structure borrowed from udev
+ * (git://git.kernel.org/pub/scm/linux/hotplug/udev.git)
+ *
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <getopt.h>
+#include <syslog.h>
+
+#include "usbip_common.h"
+#include "usbip_network.h"
+#include "usbip.h"
+
+static int usbip_help(int argc, char *argv[]);
+static int usbip_version(int argc, char *argv[]);
+
+static const char usbip_version_string[] = PACKAGE_STRING;
+
+static const char usbip_usage_string[] =
+	"usbip [--debug] [--log] [--tcp-port PORT] [version]\n"
+	"             [help] <command> <args>\n";
+
+static void usbip_usage(void)
+{
+	printf("usage: %s", usbip_usage_string);
+}
+
+struct command {
+	const char *name;
+	int (*fn)(int argc, char *argv[]);
+	const char *help;
+	void (*usage)(void);
+};
+
+static const struct command cmds[] = {
+	{
+		.name  = "help",
+		.fn    = usbip_help,
+		.help  = NULL,
+		.usage = NULL
+	},
+	{
+		.name  = "version",
+		.fn    = usbip_version,
+		.help  = NULL,
+		.usage = NULL
+	},
+	{
+		.name  = "attach",
+		.fn    = usbip_attach,
+		.help  = "Attach a remote USB device",
+		.usage = usbip_attach_usage
+	},
+	{
+		.name  = "detach",
+		.fn    = usbip_detach,
+		.help  = "Detach a remote USB device",
+		.usage = usbip_detach_usage
+	},
+	{
+		.name  = "list",
+		.fn    = usbip_list,
+		.help  = "List exportable or local USB devices",
+		.usage = usbip_list_usage
+	},
+	{
+		.name  = "bind",
+		.fn    = usbip_bind,
+		.help  = "Bind device to " USBIP_HOST_DRV_NAME ".ko",
+		.usage = usbip_bind_usage
+	},
+	{
+		.name  = "unbind",
+		.fn    = usbip_unbind,
+		.help  = "Unbind device from " USBIP_HOST_DRV_NAME ".ko",
+		.usage = usbip_unbind_usage
+	},
+	{
+		.name  = "port",
+		.fn    = usbip_port_show,
+		.help  = "Show imported USB devices",
+		.usage = NULL
+	},
+	{ NULL, NULL, NULL, NULL }
+};
+
+static int usbip_help(int argc, char *argv[])
+{
+	const struct command *cmd;
+	int i;
+	int ret = 0;
+
+	if (argc > 1 && argv++) {
+		for (i = 0; cmds[i].name != NULL; i++)
+			if (!strcmp(cmds[i].name, argv[0]) && cmds[i].usage) {
+				cmds[i].usage();
+				goto done;
+			}
+		ret = -1;
+	}
+
+	usbip_usage();
+	printf("\n");
+	for (cmd = cmds; cmd->name != NULL; cmd++)
+		if (cmd->help != NULL)
+			printf("  %-10s %s\n", cmd->name, cmd->help);
+	printf("\n");
+done:
+	return ret;
+}
+
+static int usbip_version(int argc, char *argv[])
+{
+	(void) argc;
+	(void) argv;
+
+	printf(PROGNAME " (%s)\n", usbip_version_string);
+	return 0;
+}
+
+static int run_command(const struct command *cmd, int argc, char *argv[])
+{
+	dbg("running command: `%s'", cmd->name);
+	return cmd->fn(argc, argv);
+}
+
+int main(int argc, char *argv[])
+{
+	static const struct option opts[] = {
+		{ "debug",    no_argument,       NULL, 'd' },
+		{ "log",      no_argument,       NULL, 'l' },
+		{ "tcp-port", required_argument, NULL, 't' },
+		{ NULL,       0,                 NULL,  0  }
+	};
+
+	char *cmd;
+	int opt;
+	int i, rc = -1;
+
+	usbip_use_stderr = 1;
+	opterr = 0;
+	for (;;) {
+		opt = getopt_long(argc, argv, "+dlt:", opts, NULL);
+
+		if (opt == -1)
+			break;
+
+		switch (opt) {
+		case 'd':
+			usbip_use_debug = 1;
+			break;
+		case 'l':
+			usbip_use_syslog = 1;
+			openlog("", LOG_PID, LOG_USER);
+			break;
+		case 't':
+			usbip_setup_port_number(optarg);
+			break;
+		case '?':
+			printf("usbip: invalid option\n");
+		default:
+			usbip_usage();
+			goto out;
+		}
+	}
+
+	cmd = argv[optind];
+	if (cmd) {
+		for (i = 0; cmds[i].name != NULL; i++)
+			if (!strcmp(cmds[i].name, cmd)) {
+				argc -= optind;
+				argv += optind;
+				optind = 0;
+				rc = run_command(&cmds[i], argc, argv);
+				goto out;
+			}
+	}
+
+	/* invalid command */
+	usbip_help(0, NULL);
+out:
+	return (rc > -1 ? EXIT_SUCCESS : EXIT_FAILURE);
+}
diff --git a/tools/usb/usbip/src/usbip.h b/tools/usb/usbip/src/usbip.h
new file mode 100644
index 000000000000..84fe66a9d8ad
--- /dev/null
+++ b/tools/usb/usbip/src/usbip.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __USBIP_H
+#define __USBIP_H
+
+#ifdef HAVE_CONFIG_H
+#include "../config.h"
+#endif
+
+/* usbip commands */
+int usbip_attach(int argc, char *argv[]);
+int usbip_detach(int argc, char *argv[]);
+int usbip_list(int argc, char *argv[]);
+int usbip_bind(int argc, char *argv[]);
+int usbip_unbind(int argc, char *argv[]);
+int usbip_port_show(int argc, char *argv[]);
+
+void usbip_attach_usage(void);
+void usbip_detach_usage(void);
+void usbip_list_usage(void);
+void usbip_bind_usage(void);
+void usbip_unbind_usage(void);
+
+#endif /* __USBIP_H */
diff --git a/tools/usb/usbip/src/usbip_attach.c b/tools/usb/usbip/src/usbip_attach.c
new file mode 100644
index 000000000000..d58a14dfc094
--- /dev/null
+++ b/tools/usb/usbip/src/usbip_attach.c
@@ -0,0 +1,241 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/stat.h>
+
+#include <limits.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <fcntl.h>
+#include <getopt.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "vhci_driver.h"
+#include "usbip_common.h"
+#include "usbip_network.h"
+#include "usbip.h"
+
+static const char usbip_attach_usage_string[] =
+	"usbip attach <args>\n"
+	"    -r, --remote=<host>      The machine with exported USB devices\n"
+	"    -b, --busid=<busid>    Busid of the device on <host>\n";
+
+void usbip_attach_usage(void)
+{
+	printf("usage: %s", usbip_attach_usage_string);
+}
+
+#define MAX_BUFF 100
+static int record_connection(char *host, char *port, char *busid, int rhport)
+{
+	int fd;
+	char path[PATH_MAX+1];
+	char buff[MAX_BUFF+1];
+	int ret;
+
+	ret = mkdir(VHCI_STATE_PATH, 0700);
+	if (ret < 0) {
+		/* if VHCI_STATE_PATH exists, then it better be a directory */
+		if (errno == EEXIST) {
+			struct stat s;
+
+			ret = stat(VHCI_STATE_PATH, &s);
+			if (ret < 0)
+				return -1;
+			if (!(s.st_mode & S_IFDIR))
+				return -1;
+		} else
+			return -1;
+	}
+
+	snprintf(path, PATH_MAX, VHCI_STATE_PATH"/port%d", rhport);
+
+	fd = open(path, O_WRONLY|O_CREAT|O_TRUNC, S_IRWXU);
+	if (fd < 0)
+		return -1;
+
+	snprintf(buff, MAX_BUFF, "%s %s %s\n",
+			host, port, busid);
+
+	ret = write(fd, buff, strlen(buff));
+	if (ret != (ssize_t) strlen(buff)) {
+		close(fd);
+		return -1;
+	}
+
+	close(fd);
+
+	return 0;
+}
+
+static int import_device(int sockfd, struct usbip_usb_device *udev)
+{
+	int rc;
+	int port;
+
+	rc = usbip_vhci_driver_open();
+	if (rc < 0) {
+		err("open vhci_driver");
+		return -1;
+	}
+
+	port = usbip_vhci_get_free_port();
+	if (port < 0) {
+		err("no free port");
+		usbip_vhci_driver_close();
+		return -1;
+	}
+
+	rc = usbip_vhci_attach_device(port, sockfd, udev->busnum,
+				      udev->devnum, udev->speed);
+	if (rc < 0) {
+		err("import device");
+		usbip_vhci_driver_close();
+		return -1;
+	}
+
+	usbip_vhci_driver_close();
+
+	return port;
+}
+
+static int query_import_device(int sockfd, char *busid)
+{
+	int rc;
+	struct op_import_request request;
+	struct op_import_reply   reply;
+	uint16_t code = OP_REP_IMPORT;
+
+	memset(&request, 0, sizeof(request));
+	memset(&reply, 0, sizeof(reply));
+
+	/* send a request */
+	rc = usbip_net_send_op_common(sockfd, OP_REQ_IMPORT, 0);
+	if (rc < 0) {
+		err("send op_common");
+		return -1;
+	}
+
+	strncpy(request.busid, busid, SYSFS_BUS_ID_SIZE-1);
+
+	PACK_OP_IMPORT_REQUEST(0, &request);
+
+	rc = usbip_net_send(sockfd, (void *) &request, sizeof(request));
+	if (rc < 0) {
+		err("send op_import_request");
+		return -1;
+	}
+
+	/* receive a reply */
+	rc = usbip_net_recv_op_common(sockfd, &code);
+	if (rc < 0) {
+		err("recv op_common");
+		return -1;
+	}
+
+	rc = usbip_net_recv(sockfd, (void *) &reply, sizeof(reply));
+	if (rc < 0) {
+		err("recv op_import_reply");
+		return -1;
+	}
+
+	PACK_OP_IMPORT_REPLY(0, &reply);
+
+	/* check the reply */
+	if (strncmp(reply.udev.busid, busid, SYSFS_BUS_ID_SIZE)) {
+		err("recv different busid %s", reply.udev.busid);
+		return -1;
+	}
+
+	/* import a device */
+	return import_device(sockfd, &reply.udev);
+}
+
+static int attach_device(char *host, char *busid)
+{
+	int sockfd;
+	int rc;
+	int rhport;
+
+	sockfd = usbip_net_tcp_connect(host, usbip_port_string);
+	if (sockfd < 0) {
+		err("tcp connect");
+		return -1;
+	}
+
+	rhport = query_import_device(sockfd, busid);
+	if (rhport < 0) {
+		err("query");
+		return -1;
+	}
+
+	close(sockfd);
+
+	rc = record_connection(host, usbip_port_string, busid, rhport);
+	if (rc < 0) {
+		err("record connection");
+		return -1;
+	}
+
+	return 0;
+}
+
+int usbip_attach(int argc, char *argv[])
+{
+	static const struct option opts[] = {
+		{ "remote", required_argument, NULL, 'r' },
+		{ "busid",  required_argument, NULL, 'b' },
+		{ NULL, 0,  NULL, 0 }
+	};
+	char *host = NULL;
+	char *busid = NULL;
+	int opt;
+	int ret = -1;
+
+	for (;;) {
+		opt = getopt_long(argc, argv, "r:b:", opts, NULL);
+
+		if (opt == -1)
+			break;
+
+		switch (opt) {
+		case 'r':
+			host = optarg;
+			break;
+		case 'b':
+			busid = optarg;
+			break;
+		default:
+			goto err_out;
+		}
+	}
+
+	if (!host || !busid)
+		goto err_out;
+
+	ret = attach_device(host, busid);
+	goto out;
+
+err_out:
+	usbip_attach_usage();
+out:
+	return ret;
+}
diff --git a/tools/usb/usbip/src/usbip_bind.c b/tools/usb/usbip/src/usbip_bind.c
new file mode 100644
index 000000000000..fa46141ae68b
--- /dev/null
+++ b/tools/usb/usbip/src/usbip_bind.c
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libudev.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <getopt.h>
+
+#include "usbip_common.h"
+#include "utils.h"
+#include "usbip.h"
+#include "sysfs_utils.h"
+
+enum unbind_status {
+	UNBIND_ST_OK,
+	UNBIND_ST_USBIP_HOST,
+	UNBIND_ST_FAILED
+};
+
+static const char usbip_bind_usage_string[] =
+	"usbip bind <args>\n"
+	"    -b, --busid=<busid>    Bind " USBIP_HOST_DRV_NAME ".ko to device "
+	"on <busid>\n";
+
+void usbip_bind_usage(void)
+{
+	printf("usage: %s", usbip_bind_usage_string);
+}
+
+/* call at unbound state */
+static int bind_usbip(char *busid)
+{
+	char attr_name[] = "bind";
+	char bind_attr_path[SYSFS_PATH_MAX];
+	int rc = -1;
+
+	snprintf(bind_attr_path, sizeof(bind_attr_path), "%s/%s/%s/%s/%s/%s",
+		 SYSFS_MNT_PATH, SYSFS_BUS_NAME, SYSFS_BUS_TYPE,
+		 SYSFS_DRIVERS_NAME, USBIP_HOST_DRV_NAME, attr_name);
+
+	rc = write_sysfs_attribute(bind_attr_path, busid, strlen(busid));
+	if (rc < 0) {
+		err("error binding device %s to driver: %s", busid,
+		    strerror(errno));
+		return -1;
+	}
+
+	return 0;
+}
+
+/* buggy driver may cause dead lock */
+static int unbind_other(char *busid)
+{
+	enum unbind_status status = UNBIND_ST_OK;
+
+	char attr_name[] = "unbind";
+	char unbind_attr_path[SYSFS_PATH_MAX];
+	int rc = -1;
+
+	struct udev *udev;
+	struct udev_device *dev;
+	const char *driver;
+	const char *bDevClass;
+
+	/* Create libudev context. */
+	udev = udev_new();
+
+	/* Get the device. */
+	dev = udev_device_new_from_subsystem_sysname(udev, "usb", busid);
+	if (!dev) {
+		dbg("unable to find device with bus ID %s", busid);
+		goto err_close_busid_dev;
+	}
+
+	/* Check what kind of device it is. */
+	bDevClass  = udev_device_get_sysattr_value(dev, "bDeviceClass");
+	if (!bDevClass) {
+		dbg("unable to get bDevClass device attribute");
+		goto err_close_busid_dev;
+	}
+
+	if (!strncmp(bDevClass, "09", strlen(bDevClass))) {
+		dbg("skip unbinding of hub");
+		goto err_close_busid_dev;
+	}
+
+	/* Get the device driver. */
+	driver = udev_device_get_driver(dev);
+	if (!driver) {
+		/* No driver bound to this device. */
+		goto out;
+	}
+
+	if (!strncmp(USBIP_HOST_DRV_NAME, driver,
+				strlen(USBIP_HOST_DRV_NAME))) {
+		/* Already bound to usbip-host. */
+		status = UNBIND_ST_USBIP_HOST;
+		goto out;
+	}
+
+	/* Unbind device from driver. */
+	snprintf(unbind_attr_path, sizeof(unbind_attr_path), "%s/%s/%s/%s/%s/%s",
+		 SYSFS_MNT_PATH, SYSFS_BUS_NAME, SYSFS_BUS_TYPE,
+		 SYSFS_DRIVERS_NAME, driver, attr_name);
+
+	rc = write_sysfs_attribute(unbind_attr_path, busid, strlen(busid));
+	if (rc < 0) {
+		err("error unbinding device %s from driver", busid);
+		goto err_close_busid_dev;
+	}
+
+	goto out;
+
+err_close_busid_dev:
+	status = UNBIND_ST_FAILED;
+out:
+	udev_device_unref(dev);
+	udev_unref(udev);
+
+	return status;
+}
+
+static int bind_device(char *busid)
+{
+	int rc;
+	struct udev *udev;
+	struct udev_device *dev;
+
+	/* Check whether the device with this bus ID exists. */
+	udev = udev_new();
+	dev = udev_device_new_from_subsystem_sysname(udev, "usb", busid);
+	if (!dev) {
+		err("device with the specified bus ID does not exist");
+		return -1;
+	}
+	udev_unref(udev);
+
+	rc = unbind_other(busid);
+	if (rc == UNBIND_ST_FAILED) {
+		err("could not unbind driver from device on busid %s", busid);
+		return -1;
+	} else if (rc == UNBIND_ST_USBIP_HOST) {
+		err("device on busid %s is already bound to %s", busid,
+		    USBIP_HOST_DRV_NAME);
+		return -1;
+	}
+
+	rc = modify_match_busid(busid, 1);
+	if (rc < 0) {
+		err("unable to bind device on %s", busid);
+		return -1;
+	}
+
+	rc = bind_usbip(busid);
+	if (rc < 0) {
+		err("could not bind device to %s", USBIP_HOST_DRV_NAME);
+		modify_match_busid(busid, 0);
+		return -1;
+	}
+
+	info("bind device on busid %s: complete", busid);
+
+	return 0;
+}
+
+int usbip_bind(int argc, char *argv[])
+{
+	static const struct option opts[] = {
+		{ "busid", required_argument, NULL, 'b' },
+		{ NULL,    0,                 NULL,  0  }
+	};
+
+	int opt;
+	int ret = -1;
+
+	for (;;) {
+		opt = getopt_long(argc, argv, "b:", opts, NULL);
+
+		if (opt == -1)
+			break;
+
+		switch (opt) {
+		case 'b':
+			ret = bind_device(optarg);
+			goto out;
+		default:
+			goto err_out;
+		}
+	}
+
+err_out:
+	usbip_bind_usage();
+out:
+	return ret;
+}
diff --git a/tools/usb/usbip/src/usbip_detach.c b/tools/usb/usbip/src/usbip_detach.c
new file mode 100644
index 000000000000..05c6d15856eb
--- /dev/null
+++ b/tools/usb/usbip/src/usbip_detach.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ctype.h>
+#include <limits.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <getopt.h>
+#include <unistd.h>
+
+#include "vhci_driver.h"
+#include "usbip_common.h"
+#include "usbip_network.h"
+#include "usbip.h"
+
+static const char usbip_detach_usage_string[] =
+	"usbip detach <args>\n"
+	"    -p, --port=<port>    " USBIP_VHCI_DRV_NAME
+	" port the device is on\n";
+
+void usbip_detach_usage(void)
+{
+	printf("usage: %s", usbip_detach_usage_string);
+}
+
+static int detach_port(char *port)
+{
+	int ret;
+	uint8_t portnum;
+	char path[PATH_MAX+1];
+
+	for (unsigned int i = 0; i < strlen(port); i++)
+		if (!isdigit(port[i])) {
+			err("invalid port %s", port);
+			return -1;
+		}
+
+	/* check max port */
+
+	portnum = atoi(port);
+
+	/* remove the port state file */
+
+	snprintf(path, PATH_MAX, VHCI_STATE_PATH"/port%d", portnum);
+
+	remove(path);
+	rmdir(VHCI_STATE_PATH);
+
+	ret = usbip_vhci_driver_open();
+	if (ret < 0) {
+		err("open vhci_driver");
+		return -1;
+	}
+
+	ret = usbip_vhci_detach_device(portnum);
+	if (ret < 0)
+		return -1;
+
+	usbip_vhci_driver_close();
+
+	return ret;
+}
+
+int usbip_detach(int argc, char *argv[])
+{
+	static const struct option opts[] = {
+		{ "port", required_argument, NULL, 'p' },
+		{ NULL, 0, NULL, 0 }
+	};
+	int opt;
+	int ret = -1;
+
+	for (;;) {
+		opt = getopt_long(argc, argv, "p:", opts, NULL);
+
+		if (opt == -1)
+			break;
+
+		switch (opt) {
+		case 'p':
+			ret = detach_port(optarg);
+			goto out;
+		default:
+			goto err_out;
+		}
+	}
+
+err_out:
+	usbip_detach_usage();
+out:
+	return ret;
+}
diff --git a/tools/usb/usbip/src/usbip_list.c b/tools/usb/usbip/src/usbip_list.c
new file mode 100644
index 000000000000..d5ce34a410e7
--- /dev/null
+++ b/tools/usb/usbip/src/usbip_list.c
@@ -0,0 +1,283 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <libudev.h>
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <getopt.h>
+#include <netdb.h>
+#include <unistd.h>
+
+#include "usbip_common.h"
+#include "usbip_network.h"
+#include "usbip.h"
+
+static const char usbip_list_usage_string[] =
+	"usbip list [-p|--parsable] <args>\n"
+	"    -p, --parsable         Parsable list format\n"
+	"    -r, --remote=<host>    List the exportable USB devices on <host>\n"
+	"    -l, --local            List the local USB devices\n";
+
+void usbip_list_usage(void)
+{
+	printf("usage: %s", usbip_list_usage_string);
+}
+
+static int get_exported_devices(char *host, int sockfd)
+{
+	char product_name[100];
+	char class_name[100];
+	struct op_devlist_reply reply;
+	uint16_t code = OP_REP_DEVLIST;
+	struct usbip_usb_device udev;
+	struct usbip_usb_interface uintf;
+	unsigned int i;
+	int rc, j;
+
+	rc = usbip_net_send_op_common(sockfd, OP_REQ_DEVLIST, 0);
+	if (rc < 0) {
+		dbg("usbip_net_send_op_common failed");
+		return -1;
+	}
+
+	rc = usbip_net_recv_op_common(sockfd, &code);
+	if (rc < 0) {
+		dbg("usbip_net_recv_op_common failed");
+		return -1;
+	}
+
+	memset(&reply, 0, sizeof(reply));
+	rc = usbip_net_recv(sockfd, &reply, sizeof(reply));
+	if (rc < 0) {
+		dbg("usbip_net_recv_op_devlist failed");
+		return -1;
+	}
+	PACK_OP_DEVLIST_REPLY(0, &reply);
+	dbg("exportable devices: %d\n", reply.ndev);
+
+	if (reply.ndev == 0) {
+		info("no exportable devices found on %s", host);
+		return 0;
+	}
+
+	printf("Exportable USB devices\n");
+	printf("======================\n");
+	printf(" - %s\n", host);
+
+	for (i = 0; i < reply.ndev; i++) {
+		memset(&udev, 0, sizeof(udev));
+		rc = usbip_net_recv(sockfd, &udev, sizeof(udev));
+		if (rc < 0) {
+			dbg("usbip_net_recv failed: usbip_usb_device[%d]", i);
+			return -1;
+		}
+		usbip_net_pack_usb_device(0, &udev);
+
+		usbip_names_get_product(product_name, sizeof(product_name),
+					udev.idVendor, udev.idProduct);
+		usbip_names_get_class(class_name, sizeof(class_name),
+				      udev.bDeviceClass, udev.bDeviceSubClass,
+				      udev.bDeviceProtocol);
+		printf("%11s: %s\n", udev.busid, product_name);
+		printf("%11s: %s\n", "", udev.path);
+		printf("%11s: %s\n", "", class_name);
+
+		for (j = 0; j < udev.bNumInterfaces; j++) {
+			rc = usbip_net_recv(sockfd, &uintf, sizeof(uintf));
+			if (rc < 0) {
+				err("usbip_net_recv failed: usbip_usb_intf[%d]",
+						j);
+
+				return -1;
+			}
+			usbip_net_pack_usb_interface(0, &uintf);
+
+			usbip_names_get_class(class_name, sizeof(class_name),
+					uintf.bInterfaceClass,
+					uintf.bInterfaceSubClass,
+					uintf.bInterfaceProtocol);
+			printf("%11s: %2d - %s\n", "", j, class_name);
+		}
+
+		printf("\n");
+	}
+
+	return 0;
+}
+
+static int list_exported_devices(char *host)
+{
+	int rc;
+	int sockfd;
+
+	sockfd = usbip_net_tcp_connect(host, usbip_port_string);
+	if (sockfd < 0) {
+		err("could not connect to %s:%s: %s", host,
+		    usbip_port_string, gai_strerror(sockfd));
+		return -1;
+	}
+	dbg("connected to %s:%s", host, usbip_port_string);
+
+	rc = get_exported_devices(host, sockfd);
+	if (rc < 0) {
+		err("failed to get device list from %s", host);
+		return -1;
+	}
+
+	close(sockfd);
+
+	return 0;
+}
+
+static void print_device(const char *busid, const char *vendor,
+			 const char *product, bool parsable)
+{
+	if (parsable)
+		printf("busid=%s#usbid=%.4s:%.4s#", busid, vendor, product);
+	else
+		printf(" - busid %s (%.4s:%.4s)\n", busid, vendor, product);
+}
+
+static void print_product_name(char *product_name, bool parsable)
+{
+	if (!parsable)
+		printf("   %s\n", product_name);
+}
+
+static int list_devices(bool parsable)
+{
+	struct udev *udev;
+	struct udev_enumerate *enumerate;
+	struct udev_list_entry *devices, *dev_list_entry;
+	struct udev_device *dev;
+	const char *path;
+	const char *idVendor;
+	const char *idProduct;
+	const char *bConfValue;
+	const char *bNumIntfs;
+	const char *busid;
+	char product_name[128];
+	int ret = -1;
+
+	/* Create libudev context. */
+	udev = udev_new();
+
+	/* Create libudev device enumeration. */
+	enumerate = udev_enumerate_new(udev);
+
+	/* Take only USB devices that are not hubs and do not have
+	 * the bInterfaceNumber attribute, i.e. are not interfaces.
+	 */
+	udev_enumerate_add_match_subsystem(enumerate, "usb");
+	udev_enumerate_add_nomatch_sysattr(enumerate, "bDeviceClass", "09");
+	udev_enumerate_add_nomatch_sysattr(enumerate, "bInterfaceNumber", NULL);
+	udev_enumerate_scan_devices(enumerate);
+
+	devices = udev_enumerate_get_list_entry(enumerate);
+
+	/* Show information about each device. */
+	udev_list_entry_foreach(dev_list_entry, devices) {
+		path = udev_list_entry_get_name(dev_list_entry);
+		dev = udev_device_new_from_syspath(udev, path);
+
+		/* Get device information. */
+		idVendor = udev_device_get_sysattr_value(dev, "idVendor");
+		idProduct = udev_device_get_sysattr_value(dev, "idProduct");
+		bConfValue = udev_device_get_sysattr_value(dev, "bConfigurationValue");
+		bNumIntfs = udev_device_get_sysattr_value(dev, "bNumInterfaces");
+		busid = udev_device_get_sysname(dev);
+		if (!idVendor || !idProduct || !bConfValue || !bNumIntfs) {
+			err("problem getting device attributes: %s",
+			    strerror(errno));
+			goto err_out;
+		}
+
+		/* Get product name. */
+		usbip_names_get_product(product_name, sizeof(product_name),
+					strtol(idVendor, NULL, 16),
+					strtol(idProduct, NULL, 16));
+
+		/* Print information. */
+		print_device(busid, idVendor, idProduct, parsable);
+		print_product_name(product_name, parsable);
+
+		printf("\n");
+
+		udev_device_unref(dev);
+	}
+
+	ret = 0;
+
+err_out:
+	udev_enumerate_unref(enumerate);
+	udev_unref(udev);
+
+	return ret;
+}
+
+int usbip_list(int argc, char *argv[])
+{
+	static const struct option opts[] = {
+		{ "parsable", no_argument,       NULL, 'p' },
+		{ "remote",   required_argument, NULL, 'r' },
+		{ "local",    no_argument,       NULL, 'l' },
+		{ NULL,       0,                 NULL,  0  }
+	};
+
+	bool parsable = false;
+	int opt;
+	int ret = -1;
+
+	if (usbip_names_init(USBIDS_FILE))
+		err("failed to open %s", USBIDS_FILE);
+
+	for (;;) {
+		opt = getopt_long(argc, argv, "pr:l", opts, NULL);
+
+		if (opt == -1)
+			break;
+
+		switch (opt) {
+		case 'p':
+			parsable = true;
+			break;
+		case 'r':
+			ret = list_exported_devices(optarg);
+			goto out;
+		case 'l':
+			ret = list_devices(parsable);
+			goto out;
+		default:
+			goto err_out;
+		}
+	}
+
+err_out:
+	usbip_list_usage();
+out:
+	usbip_names_free();
+
+	return ret;
+}
diff --git a/tools/usb/usbip/src/usbip_network.c b/tools/usb/usbip/src/usbip_network.c
new file mode 100644
index 000000000000..b4c37e76a6e0
--- /dev/null
+++ b/tools/usb/usbip/src/usbip_network.c
@@ -0,0 +1,303 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/socket.h>
+
+#include <string.h>
+
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <netinet/tcp.h>
+#include <unistd.h>
+
+#ifdef HAVE_LIBWRAP
+#include <tcpd.h>
+#endif
+
+#include "usbip_common.h"
+#include "usbip_network.h"
+
+int usbip_port = 3240;
+char *usbip_port_string = "3240";
+
+void usbip_setup_port_number(char *arg)
+{
+	dbg("parsing port arg '%s'", arg);
+	char *end;
+	unsigned long int port = strtoul(arg, &end, 10);
+
+	if (end == arg) {
+		err("port: could not parse '%s' as a decimal integer", arg);
+		return;
+	}
+
+	if (*end != '\0') {
+		err("port: garbage at end of '%s'", arg);
+		return;
+	}
+
+	if (port > UINT16_MAX) {
+		err("port: %s too high (max=%d)",
+		    arg, UINT16_MAX);
+		return;
+	}
+
+	usbip_port = port;
+	usbip_port_string = arg;
+	info("using port %d (\"%s\")", usbip_port, usbip_port_string);
+}
+
+void usbip_net_pack_uint32_t(int pack, uint32_t *num)
+{
+	uint32_t i;
+
+	if (pack)
+		i = htonl(*num);
+	else
+		i = ntohl(*num);
+
+	*num = i;
+}
+
+void usbip_net_pack_uint16_t(int pack, uint16_t *num)
+{
+	uint16_t i;
+
+	if (pack)
+		i = htons(*num);
+	else
+		i = ntohs(*num);
+
+	*num = i;
+}
+
+void usbip_net_pack_usb_device(int pack, struct usbip_usb_device *udev)
+{
+	usbip_net_pack_uint32_t(pack, &udev->busnum);
+	usbip_net_pack_uint32_t(pack, &udev->devnum);
+	usbip_net_pack_uint32_t(pack, &udev->speed);
+
+	usbip_net_pack_uint16_t(pack, &udev->idVendor);
+	usbip_net_pack_uint16_t(pack, &udev->idProduct);
+	usbip_net_pack_uint16_t(pack, &udev->bcdDevice);
+}
+
+void usbip_net_pack_usb_interface(int pack __attribute__((unused)),
+				  struct usbip_usb_interface *udev
+				  __attribute__((unused)))
+{
+	/* uint8_t members need nothing */
+}
+
+static ssize_t usbip_net_xmit(int sockfd, void *buff, size_t bufflen,
+			      int sending)
+{
+	ssize_t nbytes;
+	ssize_t total = 0;
+
+	if (!bufflen)
+		return 0;
+
+	do {
+		if (sending)
+			nbytes = send(sockfd, buff, bufflen, 0);
+		else
+			nbytes = recv(sockfd, buff, bufflen, MSG_WAITALL);
+
+		if (nbytes <= 0)
+			return -1;
+
+		buff	 = (void *)((intptr_t) buff + nbytes);
+		bufflen	-= nbytes;
+		total	+= nbytes;
+
+	} while (bufflen > 0);
+
+	return total;
+}
+
+ssize_t usbip_net_recv(int sockfd, void *buff, size_t bufflen)
+{
+	return usbip_net_xmit(sockfd, buff, bufflen, 0);
+}
+
+ssize_t usbip_net_send(int sockfd, void *buff, size_t bufflen)
+{
+	return usbip_net_xmit(sockfd, buff, bufflen, 1);
+}
+
+int usbip_net_send_op_common(int sockfd, uint32_t code, uint32_t status)
+{
+	struct op_common op_common;
+	int rc;
+
+	memset(&op_common, 0, sizeof(op_common));
+
+	op_common.version = USBIP_VERSION;
+	op_common.code    = code;
+	op_common.status  = status;
+
+	PACK_OP_COMMON(1, &op_common);
+
+	rc = usbip_net_send(sockfd, &op_common, sizeof(op_common));
+	if (rc < 0) {
+		dbg("usbip_net_send failed: %d", rc);
+		return -1;
+	}
+
+	return 0;
+}
+
+int usbip_net_recv_op_common(int sockfd, uint16_t *code)
+{
+	struct op_common op_common;
+	int rc;
+
+	memset(&op_common, 0, sizeof(op_common));
+
+	rc = usbip_net_recv(sockfd, &op_common, sizeof(op_common));
+	if (rc < 0) {
+		dbg("usbip_net_recv failed: %d", rc);
+		goto err;
+	}
+
+	PACK_OP_COMMON(0, &op_common);
+
+	if (op_common.version != USBIP_VERSION) {
+		dbg("version mismatch: %d %d", op_common.version,
+		    USBIP_VERSION);
+		goto err;
+	}
+
+	switch (*code) {
+	case OP_UNSPEC:
+		break;
+	default:
+		if (op_common.code != *code) {
+			dbg("unexpected pdu %#0x for %#0x", op_common.code,
+			    *code);
+			goto err;
+		}
+	}
+
+	if (op_common.status != ST_OK) {
+		dbg("request failed at peer: %d", op_common.status);
+		goto err;
+	}
+
+	*code = op_common.code;
+
+	return 0;
+err:
+	return -1;
+}
+
+int usbip_net_set_reuseaddr(int sockfd)
+{
+	const int val = 1;
+	int ret;
+
+	ret = setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
+	if (ret < 0)
+		dbg("setsockopt: SO_REUSEADDR");
+
+	return ret;
+}
+
+int usbip_net_set_nodelay(int sockfd)
+{
+	const int val = 1;
+	int ret;
+
+	ret = setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
+	if (ret < 0)
+		dbg("setsockopt: TCP_NODELAY");
+
+	return ret;
+}
+
+int usbip_net_set_keepalive(int sockfd)
+{
+	const int val = 1;
+	int ret;
+
+	ret = setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &val, sizeof(val));
+	if (ret < 0)
+		dbg("setsockopt: SO_KEEPALIVE");
+
+	return ret;
+}
+
+int usbip_net_set_v6only(int sockfd)
+{
+	const int val = 1;
+	int ret;
+
+	ret = setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY, &val, sizeof(val));
+	if (ret < 0)
+		dbg("setsockopt: IPV6_V6ONLY");
+
+	return ret;
+}
+
+/*
+ * IPv6 Ready
+ */
+int usbip_net_tcp_connect(char *hostname, char *service)
+{
+	struct addrinfo hints, *res, *rp;
+	int sockfd;
+	int ret;
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_STREAM;
+
+	/* get all possible addresses */
+	ret = getaddrinfo(hostname, service, &hints, &res);
+	if (ret < 0) {
+		dbg("getaddrinfo: %s service %s: %s", hostname, service,
+		    gai_strerror(ret));
+		return ret;
+	}
+
+	/* try the addresses */
+	for (rp = res; rp; rp = rp->ai_next) {
+		sockfd = socket(rp->ai_family, rp->ai_socktype,
+				rp->ai_protocol);
+		if (sockfd < 0)
+			continue;
+
+		/* should set TCP_NODELAY for usbip */
+		usbip_net_set_nodelay(sockfd);
+		/* TODO: write code for heartbeat */
+		usbip_net_set_keepalive(sockfd);
+
+		if (connect(sockfd, rp->ai_addr, rp->ai_addrlen) == 0)
+			break;
+
+		close(sockfd);
+	}
+
+	freeaddrinfo(res);
+
+	if (!rp)
+		return EAI_SYSTEM;
+
+	return sockfd;
+}
diff --git a/tools/usb/usbip/src/usbip_network.h b/tools/usb/usbip/src/usbip_network.h
new file mode 100644
index 000000000000..c1e875cf1078
--- /dev/null
+++ b/tools/usb/usbip/src/usbip_network.h
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ */
+
+#ifndef __USBIP_NETWORK_H
+#define __USBIP_NETWORK_H
+
+#ifdef HAVE_CONFIG_H
+#include "../config.h"
+#endif
+
+#include <sys/types.h>
+
+#include <stdint.h>
+
+extern int usbip_port;
+extern char *usbip_port_string;
+void usbip_setup_port_number(char *arg);
+
+/* ---------------------------------------------------------------------- */
+/* Common header for all the kinds of PDUs. */
+struct op_common {
+	uint16_t version;
+
+#define OP_REQUEST	(0x80 << 8)
+#define OP_REPLY	(0x00 << 8)
+	uint16_t code;
+
+	/* add more error code */
+#define ST_OK	0x00
+#define ST_NA	0x01
+	uint32_t status; /* op_code status (for reply) */
+
+} __attribute__((packed));
+
+#define PACK_OP_COMMON(pack, op_common)  do {\
+	usbip_net_pack_uint16_t(pack, &(op_common)->version);\
+	usbip_net_pack_uint16_t(pack, &(op_common)->code);\
+	usbip_net_pack_uint32_t(pack, &(op_common)->status);\
+} while (0)
+
+/* ---------------------------------------------------------------------- */
+/* Dummy Code */
+#define OP_UNSPEC	0x00
+#define OP_REQ_UNSPEC	OP_UNSPEC
+#define OP_REP_UNSPEC	OP_UNSPEC
+
+/* ---------------------------------------------------------------------- */
+/* Retrieve USB device information. (still not used) */
+#define OP_DEVINFO	0x02
+#define OP_REQ_DEVINFO	(OP_REQUEST | OP_DEVINFO)
+#define OP_REP_DEVINFO	(OP_REPLY   | OP_DEVINFO)
+
+struct op_devinfo_request {
+	char busid[SYSFS_BUS_ID_SIZE];
+} __attribute__((packed));
+
+struct op_devinfo_reply {
+	struct usbip_usb_device udev;
+	struct usbip_usb_interface uinf[];
+} __attribute__((packed));
+
+/* ---------------------------------------------------------------------- */
+/* Import a remote USB device. */
+#define OP_IMPORT	0x03
+#define OP_REQ_IMPORT	(OP_REQUEST | OP_IMPORT)
+#define OP_REP_IMPORT   (OP_REPLY   | OP_IMPORT)
+
+struct op_import_request {
+	char busid[SYSFS_BUS_ID_SIZE];
+} __attribute__((packed));
+
+struct op_import_reply {
+	struct usbip_usb_device udev;
+//	struct usbip_usb_interface uinf[];
+} __attribute__((packed));
+
+#define PACK_OP_IMPORT_REQUEST(pack, request)  do {\
+} while (0)
+
+#define PACK_OP_IMPORT_REPLY(pack, reply)  do {\
+	usbip_net_pack_usb_device(pack, &(reply)->udev);\
+} while (0)
+
+/* ---------------------------------------------------------------------- */
+/* Export a USB device to a remote host. */
+#define OP_EXPORT	0x06
+#define OP_REQ_EXPORT	(OP_REQUEST | OP_EXPORT)
+#define OP_REP_EXPORT	(OP_REPLY   | OP_EXPORT)
+
+struct op_export_request {
+	struct usbip_usb_device udev;
+} __attribute__((packed));
+
+struct op_export_reply {
+	int returncode;
+} __attribute__((packed));
+
+
+#define PACK_OP_EXPORT_REQUEST(pack, request)  do {\
+	usbip_net_pack_usb_device(pack, &(request)->udev);\
+} while (0)
+
+#define PACK_OP_EXPORT_REPLY(pack, reply)  do {\
+} while (0)
+
+/* ---------------------------------------------------------------------- */
+/* un-Export a USB device from a remote host. */
+#define OP_UNEXPORT	0x07
+#define OP_REQ_UNEXPORT	(OP_REQUEST | OP_UNEXPORT)
+#define OP_REP_UNEXPORT	(OP_REPLY   | OP_UNEXPORT)
+
+struct op_unexport_request {
+	struct usbip_usb_device udev;
+} __attribute__((packed));
+
+struct op_unexport_reply {
+	int returncode;
+} __attribute__((packed));
+
+#define PACK_OP_UNEXPORT_REQUEST(pack, request)  do {\
+	usbip_net_pack_usb_device(pack, &(request)->udev);\
+} while (0)
+
+#define PACK_OP_UNEXPORT_REPLY(pack, reply)  do {\
+} while (0)
+
+/* ---------------------------------------------------------------------- */
+/* Negotiate IPSec encryption key. (still not used) */
+#define OP_CRYPKEY	0x04
+#define OP_REQ_CRYPKEY	(OP_REQUEST | OP_CRYPKEY)
+#define OP_REP_CRYPKEY	(OP_REPLY   | OP_CRYPKEY)
+
+struct op_crypkey_request {
+	/* 128bit key */
+	uint32_t key[4];
+} __attribute__((packed));
+
+struct op_crypkey_reply {
+	uint32_t __reserved;
+} __attribute__((packed));
+
+
+/* ---------------------------------------------------------------------- */
+/* Retrieve the list of exported USB devices. */
+#define OP_DEVLIST	0x05
+#define OP_REQ_DEVLIST	(OP_REQUEST | OP_DEVLIST)
+#define OP_REP_DEVLIST	(OP_REPLY   | OP_DEVLIST)
+
+struct op_devlist_request {
+} __attribute__((packed));
+
+struct op_devlist_reply {
+	uint32_t ndev;
+	/* followed by reply_extra[] */
+} __attribute__((packed));
+
+struct op_devlist_reply_extra {
+	struct usbip_usb_device    udev;
+	struct usbip_usb_interface uinf[];
+} __attribute__((packed));
+
+#define PACK_OP_DEVLIST_REQUEST(pack, request)  do {\
+} while (0)
+
+#define PACK_OP_DEVLIST_REPLY(pack, reply)  do {\
+	usbip_net_pack_uint32_t(pack, &(reply)->ndev);\
+} while (0)
+
+void usbip_net_pack_uint32_t(int pack, uint32_t *num);
+void usbip_net_pack_uint16_t(int pack, uint16_t *num);
+void usbip_net_pack_usb_device(int pack, struct usbip_usb_device *udev);
+void usbip_net_pack_usb_interface(int pack, struct usbip_usb_interface *uinf);
+
+ssize_t usbip_net_recv(int sockfd, void *buff, size_t bufflen);
+ssize_t usbip_net_send(int sockfd, void *buff, size_t bufflen);
+int usbip_net_send_op_common(int sockfd, uint32_t code, uint32_t status);
+int usbip_net_recv_op_common(int sockfd, uint16_t *code);
+int usbip_net_set_reuseaddr(int sockfd);
+int usbip_net_set_nodelay(int sockfd);
+int usbip_net_set_keepalive(int sockfd);
+int usbip_net_set_v6only(int sockfd);
+int usbip_net_tcp_connect(char *hostname, char *port);
+
+#endif /* __USBIP_NETWORK_H */
diff --git a/tools/usb/usbip/src/usbip_port.c b/tools/usb/usbip/src/usbip_port.c
new file mode 100644
index 000000000000..a2e884fd9226
--- /dev/null
+++ b/tools/usb/usbip/src/usbip_port.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "vhci_driver.h"
+#include "usbip_common.h"
+
+static int list_imported_devices(void)
+{
+	int i;
+	struct usbip_imported_device *idev;
+	int ret;
+
+	ret = usbip_vhci_driver_open();
+	if (ret < 0) {
+		err("open vhci_driver");
+		return -1;
+	}
+
+	printf("Imported USB devices\n");
+	printf("====================\n");
+
+	for (i = 0; i < vhci_driver->nports; i++) {
+		idev = &vhci_driver->idev[i];
+
+		if (usbip_vhci_imported_device_dump(idev) < 0)
+			ret = -1;
+	}
+
+	usbip_vhci_driver_close();
+
+	return ret;
+
+}
+
+int usbip_port_show(__attribute__((unused)) int argc,
+		    __attribute__((unused)) char *argv[])
+{
+	int ret;
+
+	ret = list_imported_devices();
+	if (ret < 0)
+		err("list imported devices");
+
+	return ret;
+}
diff --git a/tools/usb/usbip/src/usbip_unbind.c b/tools/usb/usbip/src/usbip_unbind.c
new file mode 100644
index 000000000000..a4a496c9cbaf
--- /dev/null
+++ b/tools/usb/usbip/src/usbip_unbind.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libudev.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <getopt.h>
+
+#include "usbip_common.h"
+#include "utils.h"
+#include "usbip.h"
+#include "sysfs_utils.h"
+
+static const char usbip_unbind_usage_string[] =
+	"usbip unbind <args>\n"
+	"    -b, --busid=<busid>    Unbind " USBIP_HOST_DRV_NAME ".ko from "
+	"device on <busid>\n";
+
+void usbip_unbind_usage(void)
+{
+	printf("usage: %s", usbip_unbind_usage_string);
+}
+
+static int unbind_device(char *busid)
+{
+	char bus_type[] = "usb";
+	int rc, ret = -1;
+
+	char unbind_attr_name[] = "unbind";
+	char unbind_attr_path[SYSFS_PATH_MAX];
+	char rebind_attr_name[] = "rebind";
+	char rebind_attr_path[SYSFS_PATH_MAX];
+
+	struct udev *udev;
+	struct udev_device *dev;
+	const char *driver;
+
+	/* Create libudev context. */
+	udev = udev_new();
+
+	/* Check whether the device with this bus ID exists. */
+	dev = udev_device_new_from_subsystem_sysname(udev, "usb", busid);
+	if (!dev) {
+		err("device with the specified bus ID does not exist");
+		goto err_close_udev;
+	}
+
+	/* Check whether the device is using usbip-host driver. */
+	driver = udev_device_get_driver(dev);
+	if (!driver || strcmp(driver, "usbip-host")) {
+		err("device is not bound to usbip-host driver");
+		goto err_close_udev;
+	}
+
+	/* Unbind device from driver. */
+	snprintf(unbind_attr_path, sizeof(unbind_attr_path), "%s/%s/%s/%s/%s/%s",
+		 SYSFS_MNT_PATH, SYSFS_BUS_NAME, bus_type, SYSFS_DRIVERS_NAME,
+		 USBIP_HOST_DRV_NAME, unbind_attr_name);
+
+	rc = write_sysfs_attribute(unbind_attr_path, busid, strlen(busid));
+	if (rc < 0) {
+		err("error unbinding device %s from driver", busid);
+		goto err_close_udev;
+	}
+
+	/* Notify driver of unbind. */
+	rc = modify_match_busid(busid, 0);
+	if (rc < 0) {
+		err("unable to unbind device on %s", busid);
+		goto err_close_udev;
+	}
+
+	/* Trigger new probing. */
+	snprintf(rebind_attr_path, sizeof(unbind_attr_path), "%s/%s/%s/%s/%s/%s",
+			SYSFS_MNT_PATH, SYSFS_BUS_NAME, bus_type, SYSFS_DRIVERS_NAME,
+			USBIP_HOST_DRV_NAME, rebind_attr_name);
+
+	rc = write_sysfs_attribute(rebind_attr_path, busid, strlen(busid));
+	if (rc < 0) {
+		err("error rebinding");
+		goto err_close_udev;
+	}
+
+	ret = 0;
+	info("unbind device on busid %s: complete", busid);
+
+err_close_udev:
+	udev_device_unref(dev);
+	udev_unref(udev);
+
+	return ret;
+}
+
+int usbip_unbind(int argc, char *argv[])
+{
+	static const struct option opts[] = {
+		{ "busid", required_argument, NULL, 'b' },
+		{ NULL,    0,                 NULL,  0  }
+	};
+
+	int opt;
+	int ret = -1;
+
+	for (;;) {
+		opt = getopt_long(argc, argv, "b:", opts, NULL);
+
+		if (opt == -1)
+			break;
+
+		switch (opt) {
+		case 'b':
+			ret = unbind_device(optarg);
+			goto out;
+		default:
+			goto err_out;
+		}
+	}
+
+err_out:
+	usbip_unbind_usage();
+out:
+	return ret;
+}
diff --git a/tools/usb/usbip/src/usbipd.c b/tools/usb/usbip/src/usbipd.c
new file mode 100644
index 000000000000..2f87f2d348ba
--- /dev/null
+++ b/tools/usb/usbip/src/usbipd.c
@@ -0,0 +1,679 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "../config.h"
+#endif
+
+#define _GNU_SOURCE
+#include <errno.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#ifdef HAVE_LIBWRAP
+#include <tcpd.h>
+#endif
+
+#include <getopt.h>
+#include <signal.h>
+#include <poll.h>
+
+#include "usbip_host_driver.h"
+#include "usbip_common.h"
+#include "usbip_network.h"
+#include "list.h"
+
+#undef  PROGNAME
+#define PROGNAME "usbipd"
+#define MAXSOCKFD 20
+
+#define MAIN_LOOP_TIMEOUT 10
+
+#define DEFAULT_PID_FILE "/var/run/" PROGNAME ".pid"
+
+static const char usbip_version_string[] = PACKAGE_STRING;
+
+static const char usbipd_help_string[] =
+	"usage: usbipd [options]\n"
+	"\n"
+	"	-4, --ipv4\n"
+	"		Bind to IPv4. Default is both.\n"
+	"\n"
+	"	-6, --ipv6\n"
+	"		Bind to IPv6. Default is both.\n"
+	"\n"
+	"	-D, --daemon\n"
+	"		Run as a daemon process.\n"
+	"\n"
+	"	-d, --debug\n"
+	"		Print debugging information.\n"
+	"\n"
+	"	-PFILE, --pid FILE\n"
+	"		Write process id to FILE.\n"
+	"		If no FILE specified, use " DEFAULT_PID_FILE "\n"
+	"\n"
+	"	-tPORT, --tcp-port PORT\n"
+	"		Listen on TCP/IP port PORT.\n"
+	"\n"
+	"	-h, --help\n"
+	"		Print this help.\n"
+	"\n"
+	"	-v, --version\n"
+	"		Show version.\n";
+
+static void usbipd_help(void)
+{
+	printf("%s\n", usbipd_help_string);
+}
+
+static int recv_request_import(int sockfd)
+{
+	struct op_import_request req;
+	struct op_common reply;
+	struct usbip_exported_device *edev;
+	struct usbip_usb_device pdu_udev;
+	struct list_head *i;
+	int found = 0;
+	int error = 0;
+	int rc;
+
+	memset(&req, 0, sizeof(req));
+	memset(&reply, 0, sizeof(reply));
+
+	rc = usbip_net_recv(sockfd, &req, sizeof(req));
+	if (rc < 0) {
+		dbg("usbip_net_recv failed: import request");
+		return -1;
+	}
+	PACK_OP_IMPORT_REQUEST(0, &req);
+
+	list_for_each(i, &host_driver->edev_list) {
+		edev = list_entry(i, struct usbip_exported_device, node);
+		if (!strncmp(req.busid, edev->udev.busid, SYSFS_BUS_ID_SIZE)) {
+			info("found requested device: %s", req.busid);
+			found = 1;
+			break;
+		}
+	}
+
+	if (found) {
+		/* should set TCP_NODELAY for usbip */
+		usbip_net_set_nodelay(sockfd);
+
+		/* export device needs a TCP/IP socket descriptor */
+		rc = usbip_host_export_device(edev, sockfd);
+		if (rc < 0)
+			error = 1;
+	} else {
+		info("requested device not found: %s", req.busid);
+		error = 1;
+	}
+
+	rc = usbip_net_send_op_common(sockfd, OP_REP_IMPORT,
+				      (!error ? ST_OK : ST_NA));
+	if (rc < 0) {
+		dbg("usbip_net_send_op_common failed: %#0x", OP_REP_IMPORT);
+		return -1;
+	}
+
+	if (error) {
+		dbg("import request busid %s: failed", req.busid);
+		return -1;
+	}
+
+	memcpy(&pdu_udev, &edev->udev, sizeof(pdu_udev));
+	usbip_net_pack_usb_device(1, &pdu_udev);
+
+	rc = usbip_net_send(sockfd, &pdu_udev, sizeof(pdu_udev));
+	if (rc < 0) {
+		dbg("usbip_net_send failed: devinfo");
+		return -1;
+	}
+
+	dbg("import request busid %s: complete", req.busid);
+
+	return 0;
+}
+
+static int send_reply_devlist(int connfd)
+{
+	struct usbip_exported_device *edev;
+	struct usbip_usb_device pdu_udev;
+	struct usbip_usb_interface pdu_uinf;
+	struct op_devlist_reply reply;
+	struct list_head *j;
+	int rc, i;
+
+	reply.ndev = 0;
+	/* number of exported devices */
+	list_for_each(j, &host_driver->edev_list) {
+		reply.ndev += 1;
+	}
+	info("exportable devices: %d", reply.ndev);
+
+	rc = usbip_net_send_op_common(connfd, OP_REP_DEVLIST, ST_OK);
+	if (rc < 0) {
+		dbg("usbip_net_send_op_common failed: %#0x", OP_REP_DEVLIST);
+		return -1;
+	}
+	PACK_OP_DEVLIST_REPLY(1, &reply);
+
+	rc = usbip_net_send(connfd, &reply, sizeof(reply));
+	if (rc < 0) {
+		dbg("usbip_net_send failed: %#0x", OP_REP_DEVLIST);
+		return -1;
+	}
+
+	list_for_each(j, &host_driver->edev_list) {
+		edev = list_entry(j, struct usbip_exported_device, node);
+		dump_usb_device(&edev->udev);
+		memcpy(&pdu_udev, &edev->udev, sizeof(pdu_udev));
+		usbip_net_pack_usb_device(1, &pdu_udev);
+
+		rc = usbip_net_send(connfd, &pdu_udev, sizeof(pdu_udev));
+		if (rc < 0) {
+			dbg("usbip_net_send failed: pdu_udev");
+			return -1;
+		}
+
+		for (i = 0; i < edev->udev.bNumInterfaces; i++) {
+			dump_usb_interface(&edev->uinf[i]);
+			memcpy(&pdu_uinf, &edev->uinf[i], sizeof(pdu_uinf));
+			usbip_net_pack_usb_interface(1, &pdu_uinf);
+
+			rc = usbip_net_send(connfd, &pdu_uinf,
+					sizeof(pdu_uinf));
+			if (rc < 0) {
+				err("usbip_net_send failed: pdu_uinf");
+				return -1;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int recv_request_devlist(int connfd)
+{
+	struct op_devlist_request req;
+	int rc;
+
+	memset(&req, 0, sizeof(req));
+
+	rc = usbip_net_recv(connfd, &req, sizeof(req));
+	if (rc < 0) {
+		dbg("usbip_net_recv failed: devlist request");
+		return -1;
+	}
+
+	rc = send_reply_devlist(connfd);
+	if (rc < 0) {
+		dbg("send_reply_devlist failed");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int recv_pdu(int connfd)
+{
+	uint16_t code = OP_UNSPEC;
+	int ret;
+
+	ret = usbip_net_recv_op_common(connfd, &code);
+	if (ret < 0) {
+		dbg("could not receive opcode: %#0x", code);
+		return -1;
+	}
+
+	ret = usbip_host_refresh_device_list();
+	if (ret < 0) {
+		dbg("could not refresh device list: %d", ret);
+		return -1;
+	}
+
+	info("received request: %#0x(%d)", code, connfd);
+	switch (code) {
+	case OP_REQ_DEVLIST:
+		ret = recv_request_devlist(connfd);
+		break;
+	case OP_REQ_IMPORT:
+		ret = recv_request_import(connfd);
+		break;
+	case OP_REQ_DEVINFO:
+	case OP_REQ_CRYPKEY:
+	default:
+		err("received an unknown opcode: %#0x", code);
+		ret = -1;
+	}
+
+	if (ret == 0)
+		info("request %#0x(%d): complete", code, connfd);
+	else
+		info("request %#0x(%d): failed", code, connfd);
+
+	return ret;
+}
+
+#ifdef HAVE_LIBWRAP
+static int tcpd_auth(int connfd)
+{
+	struct request_info request;
+	int rc;
+
+	request_init(&request, RQ_DAEMON, PROGNAME, RQ_FILE, connfd, 0);
+	fromhost(&request);
+	rc = hosts_access(&request);
+	if (rc == 0)
+		return -1;
+
+	return 0;
+}
+#endif
+
+static int do_accept(int listenfd)
+{
+	int connfd;
+	struct sockaddr_storage ss;
+	socklen_t len = sizeof(ss);
+	char host[NI_MAXHOST], port[NI_MAXSERV];
+	int rc;
+
+	memset(&ss, 0, sizeof(ss));
+
+	connfd = accept(listenfd, (struct sockaddr *)&ss, &len);
+	if (connfd < 0) {
+		err("failed to accept connection");
+		return -1;
+	}
+
+	rc = getnameinfo((struct sockaddr *)&ss, len, host, sizeof(host),
+			 port, sizeof(port), NI_NUMERICHOST | NI_NUMERICSERV);
+	if (rc)
+		err("getnameinfo: %s", gai_strerror(rc));
+
+#ifdef HAVE_LIBWRAP
+	rc = tcpd_auth(connfd);
+	if (rc < 0) {
+		info("denied access from %s", host);
+		close(connfd);
+		return -1;
+	}
+#endif
+	info("connection from %s:%s", host, port);
+
+	return connfd;
+}
+
+int process_request(int listenfd)
+{
+	pid_t childpid;
+	int connfd;
+
+	connfd = do_accept(listenfd);
+	if (connfd < 0)
+		return -1;
+	childpid = fork();
+	if (childpid == 0) {
+		close(listenfd);
+		recv_pdu(connfd);
+		exit(0);
+	}
+	close(connfd);
+	return 0;
+}
+
+static void addrinfo_to_text(struct addrinfo *ai, char buf[],
+			     const size_t buf_size)
+{
+	char hbuf[NI_MAXHOST];
+	char sbuf[NI_MAXSERV];
+	int rc;
+
+	buf[0] = '\0';
+
+	rc = getnameinfo(ai->ai_addr, ai->ai_addrlen, hbuf, sizeof(hbuf),
+			 sbuf, sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV);
+	if (rc)
+		err("getnameinfo: %s", gai_strerror(rc));
+
+	snprintf(buf, buf_size, "%s:%s", hbuf, sbuf);
+}
+
+static int listen_all_addrinfo(struct addrinfo *ai_head, int sockfdlist[],
+			     int maxsockfd)
+{
+	struct addrinfo *ai;
+	int ret, nsockfd = 0;
+	const size_t ai_buf_size = NI_MAXHOST + NI_MAXSERV + 2;
+	char ai_buf[ai_buf_size];
+
+	for (ai = ai_head; ai && nsockfd < maxsockfd; ai = ai->ai_next) {
+		int sock;
+
+		addrinfo_to_text(ai, ai_buf, ai_buf_size);
+		dbg("opening %s", ai_buf);
+		sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+		if (sock < 0) {
+			err("socket: %s: %d (%s)",
+			    ai_buf, errno, strerror(errno));
+			continue;
+		}
+
+		usbip_net_set_reuseaddr(sock);
+		usbip_net_set_nodelay(sock);
+		/* We use seperate sockets for IPv4 and IPv6
+		 * (see do_standalone_mode()) */
+		usbip_net_set_v6only(sock);
+
+		if (sock >= FD_SETSIZE) {
+			err("FD_SETSIZE: %s: sock=%d, max=%d",
+			    ai_buf, sock, FD_SETSIZE);
+			close(sock);
+			continue;
+		}
+
+		ret = bind(sock, ai->ai_addr, ai->ai_addrlen);
+		if (ret < 0) {
+			err("bind: %s: %d (%s)",
+			    ai_buf, errno, strerror(errno));
+			close(sock);
+			continue;
+		}
+
+		ret = listen(sock, SOMAXCONN);
+		if (ret < 0) {
+			err("listen: %s: %d (%s)",
+			    ai_buf, errno, strerror(errno));
+			close(sock);
+			continue;
+		}
+
+		info("listening on %s", ai_buf);
+		sockfdlist[nsockfd++] = sock;
+	}
+
+	return nsockfd;
+}
+
+static struct addrinfo *do_getaddrinfo(char *host, int ai_family)
+{
+	struct addrinfo hints, *ai_head;
+	int rc;
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family   = ai_family;
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags    = AI_PASSIVE;
+
+	rc = getaddrinfo(host, usbip_port_string, &hints, &ai_head);
+	if (rc) {
+		err("failed to get a network address %s: %s", usbip_port_string,
+		    gai_strerror(rc));
+		return NULL;
+	}
+
+	return ai_head;
+}
+
+static void signal_handler(int i)
+{
+	dbg("received '%s' signal", strsignal(i));
+}
+
+static void set_signal(void)
+{
+	struct sigaction act;
+
+	memset(&act, 0, sizeof(act));
+	act.sa_handler = signal_handler;
+	sigemptyset(&act.sa_mask);
+	sigaction(SIGTERM, &act, NULL);
+	sigaction(SIGINT, &act, NULL);
+	act.sa_handler = SIG_IGN;
+	sigaction(SIGCLD, &act, NULL);
+}
+
+static const char *pid_file;
+
+static void write_pid_file(void)
+{
+	if (pid_file) {
+		dbg("creating pid file %s", pid_file);
+		FILE *fp;
+
+		fp = fopen(pid_file, "w");
+		if (!fp) {
+			err("pid_file: %s: %d (%s)",
+			    pid_file, errno, strerror(errno));
+			return;
+		}
+		fprintf(fp, "%d\n", getpid());
+		fclose(fp);
+	}
+}
+
+static void remove_pid_file(void)
+{
+	if (pid_file) {
+		dbg("removing pid file %s", pid_file);
+		unlink(pid_file);
+	}
+}
+
+static int do_standalone_mode(int daemonize, int ipv4, int ipv6)
+{
+	struct addrinfo *ai_head;
+	int sockfdlist[MAXSOCKFD];
+	int nsockfd, family;
+	int i, terminate;
+	struct pollfd *fds;
+	struct timespec timeout;
+	sigset_t sigmask;
+
+	if (usbip_host_driver_open()) {
+		err("please load " USBIP_CORE_MOD_NAME ".ko and "
+		    USBIP_HOST_DRV_NAME ".ko!");
+		return -1;
+	}
+
+	if (daemonize) {
+		if (daemon(0, 0) < 0) {
+			err("daemonizing failed: %s", strerror(errno));
+			usbip_host_driver_close();
+			return -1;
+		}
+		umask(0);
+		usbip_use_syslog = 1;
+	}
+	set_signal();
+	write_pid_file();
+
+	info("starting " PROGNAME " (%s)", usbip_version_string);
+
+	/*
+	 * To suppress warnings on systems with bindv6only disabled
+	 * (default), we use seperate sockets for IPv6 and IPv4 and set
+	 * IPV6_V6ONLY on the IPv6 sockets.
+	 */
+	if (ipv4 && ipv6)
+		family = AF_UNSPEC;
+	else if (ipv4)
+		family = AF_INET;
+	else
+		family = AF_INET6;
+
+	ai_head = do_getaddrinfo(NULL, family);
+	if (!ai_head) {
+		usbip_host_driver_close();
+		return -1;
+	}
+	nsockfd = listen_all_addrinfo(ai_head, sockfdlist,
+		sizeof(sockfdlist) / sizeof(*sockfdlist));
+	freeaddrinfo(ai_head);
+	if (nsockfd <= 0) {
+		err("failed to open a listening socket");
+		usbip_host_driver_close();
+		return -1;
+	}
+
+	dbg("listening on %d address%s", nsockfd, (nsockfd == 1) ? "" : "es");
+
+	fds = calloc(nsockfd, sizeof(struct pollfd));
+	for (i = 0; i < nsockfd; i++) {
+		fds[i].fd = sockfdlist[i];
+		fds[i].events = POLLIN;
+	}
+	timeout.tv_sec = MAIN_LOOP_TIMEOUT;
+	timeout.tv_nsec = 0;
+
+	sigfillset(&sigmask);
+	sigdelset(&sigmask, SIGTERM);
+	sigdelset(&sigmask, SIGINT);
+
+	terminate = 0;
+	while (!terminate) {
+		int r;
+
+		r = ppoll(fds, nsockfd, &timeout, &sigmask);
+		if (r < 0) {
+			dbg("%s", strerror(errno));
+			terminate = 1;
+		} else if (r) {
+			for (i = 0; i < nsockfd; i++) {
+				if (fds[i].revents & POLLIN) {
+					dbg("read event on fd[%d]=%d",
+					    i, sockfdlist[i]);
+					process_request(sockfdlist[i]);
+				}
+			}
+		} else {
+			dbg("heartbeat timeout on ppoll()");
+		}
+	}
+
+	info("shutting down " PROGNAME);
+	free(fds);
+	usbip_host_driver_close();
+
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	static const struct option longopts[] = {
+		{ "ipv4",     no_argument,       NULL, '4' },
+		{ "ipv6",     no_argument,       NULL, '6' },
+		{ "daemon",   no_argument,       NULL, 'D' },
+		{ "daemon",   no_argument,       NULL, 'D' },
+		{ "debug",    no_argument,       NULL, 'd' },
+		{ "pid",      optional_argument, NULL, 'P' },
+		{ "tcp-port", required_argument, NULL, 't' },
+		{ "help",     no_argument,       NULL, 'h' },
+		{ "version",  no_argument,       NULL, 'v' },
+		{ NULL,	      0,                 NULL,  0  }
+	};
+
+	enum {
+		cmd_standalone_mode = 1,
+		cmd_help,
+		cmd_version
+	} cmd;
+
+	int daemonize = 0;
+	int ipv4 = 0, ipv6 = 0;
+	int opt, rc = -1;
+
+	pid_file = NULL;
+
+	usbip_use_stderr = 1;
+	usbip_use_syslog = 0;
+
+	if (geteuid() != 0)
+		err("not running as root?");
+
+	cmd = cmd_standalone_mode;
+	for (;;) {
+		opt = getopt_long(argc, argv, "46DdP::t:hv", longopts, NULL);
+
+		if (opt == -1)
+			break;
+
+		switch (opt) {
+		case '4':
+			ipv4 = 1;
+			break;
+		case '6':
+			ipv6 = 1;
+			break;
+		case 'D':
+			daemonize = 1;
+			break;
+		case 'd':
+			usbip_use_debug = 1;
+			break;
+		case 'h':
+			cmd = cmd_help;
+			break;
+		case 'P':
+			pid_file = optarg ? optarg : DEFAULT_PID_FILE;
+			break;
+		case 't':
+			usbip_setup_port_number(optarg);
+			break;
+		case 'v':
+			cmd = cmd_version;
+			break;
+		case '?':
+			usbipd_help();
+		default:
+			goto err_out;
+		}
+	}
+
+	if (!ipv4 && !ipv6)
+		ipv4 = ipv6 = 1;
+
+	switch (cmd) {
+	case cmd_standalone_mode:
+		rc = do_standalone_mode(daemonize, ipv4, ipv6);
+		remove_pid_file();
+		break;
+	case cmd_version:
+		printf(PROGNAME " (%s)\n", usbip_version_string);
+		rc = 0;
+		break;
+	case cmd_help:
+		usbipd_help();
+		rc = 0;
+		break;
+	default:
+		usbipd_help();
+		goto err_out;
+	}
+
+err_out:
+	return (rc > -1 ? EXIT_SUCCESS : EXIT_FAILURE);
+}
diff --git a/tools/usb/usbip/src/utils.c b/tools/usb/usbip/src/utils.c
new file mode 100644
index 000000000000..2b3d6d235015
--- /dev/null
+++ b/tools/usb/usbip/src/utils.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "usbip_common.h"
+#include "utils.h"
+#include "sysfs_utils.h"
+
+int modify_match_busid(char *busid, int add)
+{
+	char attr_name[] = "match_busid";
+	char command[SYSFS_BUS_ID_SIZE + 4];
+	char match_busid_attr_path[SYSFS_PATH_MAX];
+	int rc;
+
+	snprintf(match_busid_attr_path, sizeof(match_busid_attr_path),
+		 "%s/%s/%s/%s/%s/%s", SYSFS_MNT_PATH, SYSFS_BUS_NAME,
+		 SYSFS_BUS_TYPE, SYSFS_DRIVERS_NAME, USBIP_HOST_DRV_NAME,
+		 attr_name);
+
+	if (add)
+		snprintf(command, SYSFS_BUS_ID_SIZE + 4, "add %s", busid);
+	else
+		snprintf(command, SYSFS_BUS_ID_SIZE + 4, "del %s", busid);
+
+	rc = write_sysfs_attribute(match_busid_attr_path, command,
+				   sizeof(command));
+	if (rc < 0) {
+		dbg("failed to write match_busid: %s", strerror(errno));
+		return -1;
+	}
+
+	return 0;
+}
diff --git a/tools/usb/usbip/src/utils.h b/tools/usb/usbip/src/utils.h
new file mode 100644
index 000000000000..5916fd3e02a6
--- /dev/null
+++ b/tools/usb/usbip/src/utils.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __UTILS_H
+#define __UTILS_H
+
+int modify_match_busid(char *busid, int add);
+
+#endif /* __UTILS_H */
+