1 .. SPDX-License-Identifier: GPL-2.0
3 .. include:: <isonum.txt>
5 =========================
6 Raylink wireless LAN card
7 =========================
11 Copyright |copy| 1998 Corey Thomas (corey@world.std.com)
13 This file is the documentation for the Raylink Wireless LAN card driver for
14 Linux. The Raylink wireless LAN card is a PCMCIA card which provides IEEE
15 802.11 compatible wireless network connectivity at 1 and 2 megabits/second.
16 See http://www.raytheon.com/micro/raylink/ for more information on the Raylink
17 card. This driver is in early development and does have bugs. See the known
18 bugs and limitations at the end of this document for more information.
19 This driver also works with WebGear's Aviator 2.4 and Aviator Pro
22 As of kernel 2.3.18, the ray_cs driver is part of the Linux kernel
23 source. My web page for the development of ray_cs is at
24 http://web.ralinktech.com/ralink/Home/Support/Linux.html
25 and I can be emailed at corey@world.std.com
27 The kernel driver is based on ray_cs-1.62.tgz
29 The driver at my web page is intended to be used as an add on to
30 David Hinds pcmcia package. All the command line parameters are
31 available when compiled as a module. When built into the kernel, only
32 the essid= string parameter is available via the kernel command line.
33 This will change after the method of sorting out parameters for all
34 the PCMCIA drivers is agreed upon. If you must have a built in driver
35 with nondefault parameters, they can be edited in
36 /usr/src/linux/drivers/net/pcmcia/ray_cs.c. Searching for module_param
39 Information on card services is available at:
41 http://pcmcia-cs.sourceforge.net/
44 Card services user programs are still required for PCMCIA devices.
45 pcmcia-cs-3.1.1 or greater is required for the kernel version of
48 Currently, ray_cs is not part of David Hinds card services package,
49 so the following magic is required.
51 At the end of the /etc/pcmcia/config.opts file, add the line:
53 This will make card services read the ray_cs.opts file
54 when starting. Create the file /etc/pcmcia/ray_cs.opts containing the
57 #### start of /etc/pcmcia/ray_cs.opts ###################
58 # Configuration options for Raylink Wireless LAN PCMCIA card
60 class "network" module "misc/ray_cs"
62 card "RayLink PC Card WLAN Adapter"
66 module "misc/ray_cs" opts ""
67 #### end of /etc/pcmcia/ray_cs.opts #####################
70 To join an existing network with
71 different parameters, contact the network administrator for the
72 configuration information, and edit /etc/pcmcia/ray_cs.opts.
73 Add the parameters below between the empty quotes.
75 Parameters for ray_cs driver which may be specified in ray_cs.opts:
77 =============== =============== =============================================
78 bc integer 0 = normal mode (802.11 timing),
79 1 = slow down inter frame timing to allow
80 operation with older breezecom access
83 beacon_period integer beacon period in Kilo-microseconds,
85 legal values = must be integer multiple
90 country integer 1 = USA (default),
99 essid string ESS ID - network name to join
101 string with maximum length of 32 chars
102 default value = "ADHOC_ESSID"
104 hop_dwell integer hop dwell time in Kilo-microseconds
106 legal values = 16,32,64,128(default),256
108 irq_mask integer linux standard 16 bit value 1bit/IRQ
110 lsb is IRQ 0, bit 1 is IRQ 1 etc.
111 Used to restrict choice of IRQ's to use.
112 Recommended method for controlling
113 interrupts is in /etc/pcmcia/config.opts
115 net_type integer 0 (default) = adhoc network,
118 phy_addr string string containing new MAC address in
119 hex, must start with x eg
122 psm integer 0 = continuously active,
123 1 = power save mode (not useful yet)
125 pc_debug integer (0-5) larger values for more verbose
126 logging. Replaces ray_debug.
128 ray_debug integer Replaced with pc_debug
130 ray_mem_speed integer defaults to 500
132 sniffer integer 0 = not sniffer (default),
133 1 = sniffer which can be used to record all
134 network traffic using tcpdump or similar,
135 but no normal network use is allowed.
137 translate integer 0 = no translation (encapsulate frames),
138 1 = translation (RFC1042/802.1)
139 =============== =============== =============================================
141 More on sniffer mode:
143 tcpdump does not understand 802.11 headers, so it can't
144 interpret the contents, but it can record to a file. This is only
145 useful for debugging 802.11 lowlevel protocols that are not visible to
146 linux. If you want to watch ftp xfers, or do similar things, you
147 don't need to use sniffer mode. Also, some packet types are never
148 sent up by the card, so you will never see them (ack, rts, cts, probe
149 etc.) There is a simple program (showcap) included in the ray_cs
150 package which parses the 802.11 headers.
152 Known Problems and missing features
154 Does not work with non x86
156 Does not work with SMP
158 Support for defragmenting frames is not yet debugged, and in
159 fact is known to not work. I have never encountered a net set
160 up to fragment, but still, it should be fixed.
162 The ioctl support is incomplete. The hardware address cannot be set
163 using ifconfig yet. If a different hardware address is needed, it may
164 be set using the phy_addr parameter in ray_cs.opts. This requires
165 a card insertion to take effect.