The USB double bulk pipe driver (Host to host cables). Currently there

are two supported chips, the NetChip 1080 (only prototypes available)
and the EzLink cable. Any other cable should be supported however as they
are all very much alike (there is a difference between them wrt
performance).

It uses Netgraph.

This driver was mostly written by Doug Ambrisko and Julian Elischer and
I would like to thank Whistle for yet another contribution. And my
aplogies to them for me sitting on the driver for so long (2 months).

Also, many thanks to Reid Augustin from NetChip for providing me with a
prototype of their 1080 chip.

Be aware of the fact that this driver is very immature and has only been
tested very lightly. If someone feels like learning about Netgraph however
this is an excellent driver to start playing with.

1 files changed, 104 insertions, 0 deletions

diff --git a/share/man/man4/udbp.4 b/share/man/man4/udbp.4
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+.\" Copyright (c) 1999
+.\"	Nick Hibma <hibma@skylink.it>. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by Bill Paul.
+.\" 4. Neither the name of the author nor the names of any co-contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"   without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY NICK HIBMA AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL NICK HIBMA OR THE VOICES IN HIS HEAD
+.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+.\" THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\"	$FreeBSD$
+.\"
+.Dd April 30, 2000
+.Dt UDBP 4
+.Os FreeBSD
+.Sh NAME
+.Nm udbp
+.Nd USB Double Bulk Pipe driver
+.Sh SYNOPSIS
+.Cd "device udbp"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for host-to-host cables that contain at least two
+bulk pipes, one for each direction, like for example the EzLink cable and
+the NetChip 1080 chip.
+.Pp
+It requires netgraph to be avalable. This can be done either by adding
+.Cd "options NETGRAPH"
+to your kernel configuration file, or alternatively loading
+.Nm netgraph
+as a module either from
+.Pa /boot/loader.conf
+or from the command line, before the udbp module.
+.Sh EXAMPLE
+.Dl options NETGRAPH
+.Dl device udbp
+.Pp
+Add the
+.Nm udbp
+driver to the kernel.
+.Pp
+.Dl kldload netgraph
+.Dl kldload udbp
+.Pp
+Load the
+.Nm netgraph
+module and then the
+.Nm udbp
+driver.
+.Pp
+.Dl ngctl mkpeer udbp0: iface data inet
+.Dl ifconfig ng0 10.0.0.1 10.0.0.2
+.Pp
+Create a new network interface node node and connect it's inet hook to the data
+hook of the
+.Nm udbp
+node. Ifconfig configures the resulting network interface ng0 with a local
+IP address of 10.0.0.1 and a remote 10.0.0.2. On the remote host the two
+IP addresses should of course be reversed.
+.Pp
+.Sh SEE ALSO
+.Xr netgraph 4 ,
+.Xr ohci 4 ,
+.Xr uhci 4 ,
+.Xr usb 4 ,
+.Xr ngctl 8 ,
+.Xr ng_iface 8 ,
+.Sh HISTORY
+The
+.Nm udbp
+driver first appeared in
+.Fx 5.0 .
+.Sh AUTHORS
+The
+.Nm udbp
+driver was written by
+.An Doug Ambrisko Aq ambrisko@whistle.com ,
+.An Julian Elischer Aq julian@whistle.com
+and
+.An Nick Hibma Aq n_hibma@freebsd.org .
+.Pp
+This manual page was written by
+.An Nick Hibma Aq hibma@skylink.it .