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author | brueffer <brueffer@FreeBSD.org> | 2004-09-09 23:49:19 +0000 |
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committer | brueffer <brueffer@FreeBSD.org> | 2004-09-09 23:49:19 +0000 |
commit | 0e0810e3be19a046c8256aac04be6c9a0ce602bd (patch) | |
tree | 0e7a6433ee4724af3170d85f3e1cf8bdc06b84fb | |
parent | f09507d8c777925044f06e0095cf86735f3148f8 (diff) | |
download | FreeBSD-src-0e0810e3be19a046c8256aac04be6c9a0ce602bd.zip FreeBSD-src-0e0810e3be19a046c8256aac04be6c9a0ce602bd.tar.gz |
Add a manpage for the cnw(4) driver, adopted from NetBSD.
MFC after: 5 days
-rw-r--r-- | share/man/man4/cnw.4 | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/share/man/man4/cnw.4 b/share/man/man4/cnw.4 new file mode 100644 index 0000000..c46fa4a --- /dev/null +++ b/share/man/man4/cnw.4 @@ -0,0 +1,130 @@ +.\" $NetBSD: cnw.4,v 1.12 2001/09/12 18:19:17 wiz Exp $ +.\" +.\" Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that this notice is retained, +.\" the conditions in the following notices are met, and terms applying +.\" to contributors in the following notices also apply to Berkeley +.\" Software Design, Inc. +.\" +.\" 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 +.\" Berkeley Software Design, Inc. +.\" 4. Neither the name of the Berkeley Software Design, Inc. nor the names +.\" of its contributors may be used to endorse or promote products derived +.\" from this software without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``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 BERKELEY SOFTWARE DESIGN, INC. 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. +.\" +.\" PAO2 Id: cnw.4,v 1.1.1.1 1997/12/11 14:46:23 itojun Exp +.\" +.\" $FreeBSD$ +.\" +.Dd September 5, 2004 +.Dt CNW 4 +.Os +.Sh NAME +.Nm cnw +.Nd Netwave AirSurfer wireless network driver +.Sh SYNOPSIS +.Cd "device cnw" +.Sh DESCRIPTION +The +.Nm cnw +interface provides access to a theoretical 1 Mb/s wireless Ethernet network +based on the Netwave AirSurfer Wireless LAN (formerly known as the Xircom +Netwave Wireless LAN). +.Pp +Note that the driver does not support newer devices +such as the Netwave AirSurfer +.Dq Plus , +or the BayStack 650/660. +These devices are supported by the +.Xr awi 4 +driver. +.Pp +Netwave devices are not compatible with IEEE 802.11 wireless networks. +Also note that there are Netwave devices with different wireless frequency, +depending on the radio band plan in each country. +.Pp +The card uses 36K of I/O memory mapped to the card. +.\"The card uses 32K of I/O memory mapped to the card along with either 16 I/O ports +.\"or 4K of additional I/O memory for access to command registers. +.\"The driver currently only supports the use of the additional 4K of I/O memory. +You may need to increase memory space available to the PC Card controller. +See +.Xr pccard 4 +for details. +.Pp +In use, the cards appear to achieve up to a 420Kb/s transfer rate, though +a transfer rate between 250Kb/s and 350Kb/s is typical. +.Pp +The card operates in the 2.4GHz frequency range and is subject to interference +from microwaves, IEEE 802.11 wireless network devices, as well as earth. +For example, it seems that IEEE 802.11 channel 14 conflicts with Netwave +.Pq US frequency . +They interfere with each other if they are both operated +in the same geographic region, causing weird packet loss. +You may be able to avoid the interference with IEEE 802.11 devices, +by changing the IEEE 802.11 channel. +.Sh HARDWARE +Cards supported by the +.Nm +driver include: +.Pp +.Bl -bullet -compact +.It +Xircom CreditCard Netwave +.It +NetWave AirSurfer +.El +.Sh DIAGNOSTICS +.Bl -diag +.It "cnw0: can't map memory" +Indicates that the driver was not able to allocate enough PC Card bus +address space into which to map the device. +See +.Xr pccard 4 +and increase memory available to the PC Card controller. +.El +.Sh SEE ALSO +.Xr arp 4 , +.Xr awi 4 , +.Xr inet 4 , +.Xr intro 4 , +.Xr pccard 4 +.Sh HISTORY +The +.Nm +driver was ported from +.Nx +by +.An -nosplit +.An Hiroyuki Aizu Aq aizu@jaist.ac.jp . +It first appeared in +.Nx 1.4 . +The first +.Fx +release to include it was +.Fx 5.0 . +This manual page was adopted from +.Nx +by +.An Christian Brueffer Aq brueffer@FreeBSD.org . |