WAVELAN_CS(4)						     Kernel Interfaces Manual						     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) RoamAbout DS wireless ether-
       net adapter.  When this driver is attached to a card, it allocates the next available ethernet 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 frequency used by
       the card.

PARAMETERS

       irq_list=i,j,...
	      Specifies the set of interrupts that may be allocated 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 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 frequency 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
       availability 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  spec-
       trum)  [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 routine.

       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)

SEE ALSO

       wavelan(4), cardmgr(8), pcmcia(5), ifconfig(8), insmod(1), iwconfig(8), iwspy(8), iwpriv(8).

MIT Lab. for Comp. Sci. 					      4/16/95							     WAVELAN_CS(4)