Documentation/networking/ray_cs.txt

   1 September 21, 1999
   2
   3 Copyright (c) 1998  Corey Thomas (corey@world.std.com)
   4
   5 This file is the documentation for the Raylink Wireless LAN card driver for
   6 Linux.  The Raylink wireless LAN card is a PCMCIA card which provides IEEE
   7 802.11 compatible wireless network connectivity at 1 and 2 megabits/second.
   8 See http://www.raytheon.com/micro/raylink/ for more information on the Raylink
   9 card.  This driver is in early development and does have bugs.  See the known
  10 bugs and limitations at the end of this document for more information.
  11 This driver also works with WebGear's Aviator 2.4 and Aviator Pro
  12 wireless LAN cards.
  13
  14 As of kernel 2.3.18, the ray_cs driver is part of the Linux kernel
  15 source.  My web page for the development of ray_cs is at
  16 http://web.ralinktech.com/ralink/Home/Support/Linux.html
  17 and I can be emailed at corey@world.std.com
  18
  19 The kernel driver is based on ray_cs-1.62.tgz
  20
  21 The driver at my web page is intended to be used as an add on to
  22 David Hinds pcmcia package.  All the command line parameters are
  23 available when compiled as a module.  When built into the kernel, only
  24 the essid= string parameter is available via the kernel command line.
  25 This will change after the method of sorting out parameters for all
  26 the PCMCIA drivers is agreed upon.  If you must have a built in driver
  27 with nondefault parameters, they can be edited in
  28 /usr/src/linux/drivers/net/pcmcia/ray_cs.c.  Searching for module_param
  29 will find them all.
  30
  31 Information on card services is available at:
  32         http://pcmcia-cs.sourceforge.net/
  33
  34
  35 Card services user programs are still required for PCMCIA devices.
  36 pcmcia-cs-3.1.1 or greater is required for the kernel version of
  37 the driver.
  38
  39 Currently, ray_cs is not part of David Hinds card services package,
  40 so the following magic is required.
  41
  42 At the end of the /etc/pcmcia/config.opts file, add the line:
  43 source ./ray_cs.opts
  44 This will make card services read the ray_cs.opts file
  45 when starting.  Create the file /etc/pcmcia/ray_cs.opts containing the
  46 following:
  47
  48 #### start of /etc/pcmcia/ray_cs.opts ###################
  49 # Configuration options for Raylink Wireless LAN PCMCIA card
  50 device "ray_cs"
  51   class "network" module "misc/ray_cs"
  52
  53 card "RayLink PC Card WLAN Adapter"
  54   manfid 0x01a6, 0x0000
  55   bind "ray_cs"
  56
  57 module "misc/ray_cs" opts ""
  58 #### end of /etc/pcmcia/ray_cs.opts #####################
  59
  60
  61 To join an existing network with
  62 different parameters, contact the network administrator for the
  63 configuration information, and edit /etc/pcmcia/ray_cs.opts.
  64 Add the parameters below between the empty quotes.
  65
  66 Parameters for ray_cs driver which may be specified in ray_cs.opts:
  67
  68 bc              integer         0 = normal mode (802.11 timing)
  69                                 1 = slow down inter frame timing to allow
  70                                     operation with older breezecom access
  71                                     points.
  72
  73 beacon_period   integer         beacon period in Kilo-microseconds
  74                                 legal values = must be integer multiple
  75                                                of hop dwell
  76                                 default = 256
  77
  78 country         integer         1 = USA (default)
  79                                 2 = Europe
  80                                 3 = Japan
  81                                 4 = Korea
  82                                 5 = Spain
  83                                 6 = France
  84                                 7 = Israel
  85                                 8 = Australia
  86
  87 essid           string          ESS ID - network name to join
  88                                 string with maximum length of 32 chars
  89                                 default value = "ADHOC_ESSID"
  90
  91 hop_dwell       integer         hop dwell time in Kilo-microseconds
  92                                 legal values = 16,32,64,128(default),256
  93
  94 irq_mask        integer         linux standard 16 bit value 1bit/IRQ
  95                                 lsb is IRQ 0, bit 1 is IRQ 1 etc.
  96                                 Used to restrict choice of IRQ's to use.
  97                                 Recommended method for controlling
  98                                 interrupts is in /etc/pcmcia/config.opts
  99
 100 net_type        integer         0 (default) = adhoc network,
 101                                 1 = infrastructure
 102
 103 phy_addr        string          string containing new MAC address in
 104                                 hex, must start with x eg
 105                                 x00008f123456
 106
 107 psm             integer         0 = continuously active
 108                                 1 = power save mode (not useful yet)
 109
 110 pc_debug        integer         (0-5) larger values for more verbose
 111                                 logging.  Replaces ray_debug.
 112
 113 ray_debug       integer         Replaced with pc_debug
 114
 115 ray_mem_speed   integer         defaults to 500
 116
 117 sniffer         integer         0 = not sniffer (default)
 118                                 1 = sniffer which can be used to record all
 119                                     network traffic using tcpdump or similar,
 120                                     but no normal network use is allowed.
 121
 122 translate       integer         0 = no translation (encapsulate frames)
 123                                 1 = translation    (RFC1042/802.1)
 124
 125
 126 More on sniffer mode:
 127
 128 tcpdump does not understand 802.11 headers, so it can't
 129 interpret the contents, but it can record to a file.  This is only
 130 useful for debugging 802.11 lowlevel protocols that are not visible to
 131 linux.  If you want to watch ftp xfers, or do similar things, you
 132 don't need to use sniffer mode.  Also, some packet types are never
 133 sent up by the card, so you will never see them (ack, rts, cts, probe
 134 etc.)  There is a simple program (showcap) included in the ray_cs
 135 package which parses the 802.11 headers.
 136
 137 Known Problems and missing features
 138
 139         Does not work with non x86
 140
 141         Does not work with SMP
 142
 143         Support for defragmenting frames is not yet debugged, and in
 144         fact is known to not work.  I have never encountered a net set
 145         up to fragment, but still, it should be fixed.
 146
 147         The ioctl support is incomplete.  The hardware address cannot be set
 148         using ifconfig yet.  If a different hardware address is needed, it may
 149         be set using the phy_addr parameter in ray_cs.opts.  This requires
 150         a card insertion to take effect.