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diff --git a/share/man/man4/cdce.4 b/share/man/man4/cdce.4 new file mode 100644 index 00000000000..668a097dd04 --- /dev/null +++ b/share/man/man4/cdce.4 @@ -0,0 +1,130 @@ +.\" Copyright (c) 2004 Daniel Hartmeier +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" +.\" - Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" - 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. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE +.\" COPYRIGHT HOLDERS OR CONTRIBUTORS 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. +.\" +.\" $OpenBSD: cdce.4,v 1.1 2004/07/20 20:30:09 dhartmei Exp $ +.\" +.Dd July 20, 2004 +.Dt CDCE 4 +.Os +.Sh NAME +.Nm cdce +.Nd USB Communication Device Class Ethernet driver +.Sh SYNOPSIS +.Cd "cdce* at uhub? port ?" +.Sh DESCRIPTION +The +.Nm +driver provides support for USB Host-to-Host (aka USB-to-USB) bridges +based on the USB Communication Device Class (CDC) and Ethernet subclass, +including the following: +.Pp +.Bl -bullet -compact +.It +Prolific PL-2501 +.It +Sharp Zaurus +.El +.Pp +The USB bridge appears as a regular network interface on both sides, +transporting Ethernet frames. +An IP address can be assigned using +.Xr ifconfig 8 +or +.Xr hostname.if 5 +.Pp +USB 1.x bridges support speeds of up to 12Mbps, and USB 2.0 speeds of +up to 480Mbps. +.Pp +Packets are +received and transmitted over separate USB bulk transfer endpoints. +.Pp +The +.Nm +driver does not support different media types or options. +.Sh DIAGNOSTICS +.Bl -diag +.It "cdce%d: no union descriptor" +The driver couldn't fetch an interface descriptor from the USB +device. +For a manually added USB vendor/product, the CDCE_NO_UNION flag +can be tried to work around the missing descriptor. +.It "cdce%d: no data interface" +.It "cdce%d: could not read endpoint descriptor" +.It "cdce%d: unexpected endpoint" +.It "cdce%d: could not find data bulk in/out" +For a manually added USB vendor/product, these errors indicate +that the bridge is not compatible with the driver. +.It "cdce%d: watchdog timeout" +A packet was queued for transmission and a transmit command was +issued, however the device failed to acknowledge the transmission +before a timeout expired. +.It "cdce%d: no memory for rx list -- packet dropped!" +Memory allocation through MGETHDR or MCLGET failed, the system +is running low on mbufs. +.It "cdce%d: abort/close rx/tx pipe failed" +.It "cdce%d: rx/tx list init failed" +.It "cdce%d: open rx/tx pipe failed" +.It "cdce%d: usb error on rx/tx" +.El +.Sh SEE ALSO +.Xr arp 4 , +.Xr intro 4 , +.Xr netintro 4 , +.Xr usb 4 , +.Xr hostname.if 5 , +.Xr ifconfig 8 +.Rs +.%T "Universal Serial Bus Class Definitions for Communication Devices" +.%O http://www.usb.org/developers/devclass_docs/usbcdc11.pdf +.Re +.Rs +.%T "Data sheet Prolific PL-2501 Host-to-Host Bridge/Network Controller" +.%O http://tech.prolific.com.tw/visitor/fcabdl.asp?fid=20679530 +.Re +.Sh HISTORY +The +.Nm +device driver first appeared in +.Ox 3.6 . +.Sh AUTHORS +The +.Nm +driver was written by +.An Craig Boston Aq craig@tobuj.gank.org +based on the +.Xr aue 4 +driver written by +.An Bill Paul Aq wpaul@windriver.com +and ported to +.Ox +by +.An Daniel Hartmeier Aq dhartmei@openbsd.org . +.Sh CAVEATS +Many USB devices notoriously fail to report their class and interfaces +correctly. +Undetected products might work flawlessly when their vendor and product IDs +are added to the driver manually. |