wavelan_cs(4)
NAME
wavelan_cs - AT&T GIS WaveLAN PCMCIA device driver
SYNOPSIS
insmod wavelan_cs.o [irq_list=i,j,...] [mem_speed=n] [do_roaming=n]
DESCRIPTION
wavelan_cs is the low-level Card Services driver for the
NCR / AT&T / Lucent WaveLAN PCMCIA and Digital (DEC) Roam
About DS wireless ethernet adapter. When this driver is
attached to a card, it allocates the next available ether
net device (eth0..eth#). This device name will be passed
on to cardmgr(8) for the card configuration, and reported
in the kernel log file with the MAC address, NWID and fre
quency used by the card.
PARAMETERS
- irq_list=i,j,...
- Specifies the set of interrupts that may be allo
cated by this driver. - mem_speed=n
- Sets the access speed of the shared memory window,
in nanoseconds. The default is 0 (i.e., no extra
wait states). - do_roaming=n
- Enables or disables roaming mode. The default is 1
(roam).
WIRELESS EXTENSIONS
- Use iwconfig(8) to manipulate wireless extensions.
- Mode
- Set the operating mode to Ad-Hoc or Managed. This in fact
disable or enable roaming support. This setting is not
saved in hardware. - Network ID
- Set the network ID [0 to FFFF] or disable it [off] or
reenable it [on]. As the NWID is stored in the card Per
manent Storage Area, it will be reuse at any further invo
cation 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... - Sensitivity
- Signal level threshold for packet reception [0 to 63].
Should be set according to the ambiant noise level. - Encryption key
- Set the encryption key [0 to FFFF-FFFF-FFFF-FFFF]. Use
[off] and [on] to disable and reenable the hardware
encryption. This feature works only for device with
encryption option (DES or AES). - 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 threshold
- Enable you the define the quality 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.
OTHER FEATURES
Hot unplug support.
Power saving (use 'ifconfig down').
SPECIFIC NOTES
This driver will fail to load 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
Anthony D. Joseph - adj@lcs.mit.edu
Jean Tourrilhes - jt@hplb.hpl.hp.com
(+ others - see source code for details)