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-September 21, 1999
-
-Copyright (c) 1998 Corey Thomas (corey@world.std.com)
-
-This file is the documentation for the Raylink Wireless LAN card driver for
-Linux. The Raylink wireless LAN card is a PCMCIA card which provides IEEE
-802.11 compatible wireless network connectivity at 1 and 2 megabits/second.
-See http://www.raytheon.com/micro/raylink/ for more information on the Raylink
-card. This driver is in early development and does have bugs. See the known
-bugs and limitations at the end of this document for more information.
-This driver also works with WebGear's Aviator 2.4 and Aviator Pro
-wireless LAN cards.
-
-As of kernel 2.3.18, the ray_cs driver is part of the Linux kernel
-source. My web page for the development of ray_cs is at
-http://web.ralinktech.com/ralink/Home/Support/Linux.html
-and I can be emailed at corey@world.std.com
-
-The kernel driver is based on ray_cs-1.62.tgz
-
-The driver at my web page is intended to be used as an add on to
-David Hinds pcmcia package. All the command line parameters are
-available when compiled as a module. When built into the kernel, only
-the essid= string parameter is available via the kernel command line.
-This will change after the method of sorting out parameters for all
-the PCMCIA drivers is agreed upon. If you must have a built in driver
-with nondefault parameters, they can be edited in
-/usr/src/linux/drivers/net/pcmcia/ray_cs.c. Searching for module_param
-will find them all.
-
-Information on card services is available at:
- http://pcmcia-cs.sourceforge.net/
-
-
-Card services user programs are still required for PCMCIA devices.
-pcmcia-cs-3.1.1 or greater is required for the kernel version of
-the driver.
-
-Currently, ray_cs is not part of David Hinds card services package,
-so the following magic is required.
-
-At the end of the /etc/pcmcia/config.opts file, add the line:
-source ./ray_cs.opts
-This will make card services read the ray_cs.opts file
-when starting. Create the file /etc/pcmcia/ray_cs.opts containing the
-following:
-
-#### start of /etc/pcmcia/ray_cs.opts ###################
-# Configuration options for Raylink Wireless LAN PCMCIA card
-device "ray_cs"
- class "network" module "misc/ray_cs"
-
-card "RayLink PC Card WLAN Adapter"
- manfid 0x01a6, 0x0000
- bind "ray_cs"
-
-module "misc/ray_cs" opts ""
-#### end of /etc/pcmcia/ray_cs.opts #####################
-
-
-To join an existing network with
-different parameters, contact the network administrator for the
-configuration information, and edit /etc/pcmcia/ray_cs.opts.
-Add the parameters below between the empty quotes.
-
-Parameters for ray_cs driver which may be specified in ray_cs.opts:
-
-bc integer 0 = normal mode (802.11 timing)
- 1 = slow down inter frame timing to allow
- operation with older breezecom access
- points.
-
-beacon_period integer beacon period in Kilo-microseconds
- legal values = must be integer multiple
- of hop dwell
- default = 256
-
-country integer 1 = USA (default)
- 2 = Europe
- 3 = Japan
- 4 = Korea
- 5 = Spain
- 6 = France
- 7 = Israel
- 8 = Australia
-
-essid string ESS ID - network name to join
- string with maximum length of 32 chars
- default value = "ADHOC_ESSID"
-
-hop_dwell integer hop dwell time in Kilo-microseconds
- legal values = 16,32,64,128(default),256
-
-irq_mask integer linux standard 16 bit value 1bit/IRQ
- lsb is IRQ 0, bit 1 is IRQ 1 etc.
- Used to restrict choice of IRQ's to use.
- Recommended method for controlling
- interrupts is in /etc/pcmcia/config.opts
-
-net_type integer 0 (default) = adhoc network,
- 1 = infrastructure
-
-phy_addr string string containing new MAC address in
- hex, must start with x eg
- x00008f123456
-
-psm integer 0 = continuously active
- 1 = power save mode (not useful yet)
-
-pc_debug integer (0-5) larger values for more verbose
- logging. Replaces ray_debug.
-
-ray_debug integer Replaced with pc_debug
-
-ray_mem_speed integer defaults to 500
-
-sniffer integer 0 = not sniffer (default)
- 1 = sniffer which can be used to record all
- network traffic using tcpdump or similar,
- but no normal network use is allowed.
-
-translate integer 0 = no translation (encapsulate frames)
- 1 = translation (RFC1042/802.1)
-
-
-More on sniffer mode:
-
-tcpdump does not understand 802.11 headers, so it can't
-interpret the contents, but it can record to a file. This is only
-useful for debugging 802.11 lowlevel protocols that are not visible to
-linux. If you want to watch ftp xfers, or do similar things, you
-don't need to use sniffer mode. Also, some packet types are never
-sent up by the card, so you will never see them (ack, rts, cts, probe
-etc.) There is a simple program (showcap) included in the ray_cs
-package which parses the 802.11 headers.
-
-Known Problems and missing features
-
- Does not work with non x86
-
- Does not work with SMP
-
- Support for defragmenting frames is not yet debugged, and in
- fact is known to not work. I have never encountered a net set
- up to fragment, but still, it should be fixed.
-
- The ioctl support is incomplete. The hardware address cannot be set
- using ifconfig yet. If a different hardware address is needed, it may
- be set using the phy_addr parameter in ray_cs.opts. This requires
- a card insertion to take effect.