Computer Science
WAVELAN(4) WAVELAN(4)
NAME
wavelan - AT&T GIS WaveLAN ISA device driver
SYNOPSIS
insmod wavelan_cs.o [io=B,B..] [ irq=I,I..] [name=N,N..]
DESCRIPTION
wavelan is the low-level device driver for the NCR / AT&T
/ Lucent WaveLAN ISA and Digital (DEC) RoamAbout DS wire-
less ethernet adapter. This driver is available as a mod-
ule or might be compiled in the kernel. This driver sup-
ports multiple cards in both forms (up to 4) and allocates
the next available ethernet device (eth0..eth#) for each
card found, unless a device name is explicitely specified
(see below). This device name will be reported in the ker-
nel log file with the MAC address, NWID and frequency used
by the card.
PARAMETERS
This section apply to the module form (parameters passed
on the insmod(8) command line). If the driver is included
in the kernel, use the ether=IRQ,IO,NAME syntax on the
kernel command line.
io Specify the list of base address where to search
for wavelan cards (setting by dip switch on the
card). If you don't specify any io address, the
driver will scan 0x390 and 0x3E0 addresses, which
might conflict with other hardware...
irq Set the list of irq that each wavelan card should
use (the value is saved in permanent storage for
future use).
name Set the list of name to be used for each wavelan
cards device (name used by ifconfig(8)).
WIRELESS EXTENSIONS
Use iwconfig(8) to manipulate wireless extensions.
NWID (or domain)
Set the network ID [0 to FFFF] or disable it [off]. As
the NWID is stored in the card Permanent Storage Area, it
will be reuse at any further invocation of the driver.
Frequency & channels
For the 2.4GHz 2.00 Hardware, you are able to set the fre-
quency by specifying one of the 10 defined channels
(2.412, 2.422, 2.425, 2.4305, 2.432, 2.442, 2.452, 2.460,
2.462 or 2.484) or directly by its value. The frequency is
changed immediately and permanentely. Frequency availabil-
ity depend on the regulations...
Statistics spy
Set a list of MAC addresses in the driver (up to 8) and
get the last quality of link for each of those (see
iwspy(8)).
/proc/net/wireless
status is the status reported by the modem. Link quality
reports the quality of the modulation on the air (direct
sequence spread spectrum) [max = 16]. Level and Noise
refer to the signal level and noise level [max = 64]. The
crypt discarded packet and misc discarded packet counters
are not implemented.
PRIVATE IOCTL
You may use iwpriv(8) to manipulate private ioctls.
Quality and Level threshold
Enable you the define the quality and level threshold used
by the modem (packet below that level are discarded).
Histogram
This functionality allow to set a number of signal level
intervals and to count the number of packets received in
each of those defined intervals. This distribution might
be used to calculate the mean value and standard deviation
of the signal level.
SPECIFIC NOTES
This driver will fail to detect some non NCR/ATT&T/Lucent
Wavelan cards. If it's your case, you must look in the
source code on how to add your card to the detection rou-
tine.
Some of the mentioned features are optional. You may
enable to disable them by changing flags in the driver
header and recompile.
AUTHOR
Bruce Janson - bruce@cs.usyd.edu.au
Jean Tourrilhes - jt@hplb.hpl.hp.com
(+ others - see source code for details)
SEE ALSO
wavelan_cs(4), ifconfig(8), insmod(8), iwconfig(8),
iwspy(8), iwpriv(8).
Univ. of Sydney (Basser Dep. 10/22/96 Sci.) 1
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