2 Intel(R) PRO/Wireless 2915ABG Driver for Linux in support of:
4 Intel(R) PRO/Wireless 2200BG Network Connection
5 Intel(R) PRO/Wireless 2915ABG Network Connection
7 Note: The Intel(R) PRO/Wireless 2915ABG Driver for Linux and Intel(R)
8 PRO/Wireless 2200BG Driver for Linux is a unified driver that works on
9 both hardware adapters listed above. In this document the Intel(R)
10 PRO/Wireless 2915ABG Driver for Linux will be used to reference the
13 Copyright (C) 2004-2005, Intel Corporation
18 Date : October 20, 2005
22 -----------------------------------------------
23 0. IMPORTANT INFORMATION BEFORE USING THIS DRIVER
25 1.1. Overview of features
26 1.2. Module parameters
27 1.3. Wireless Extension Private Methods
28 1.4. Sysfs Helper Files
30 3. Interacting with Wireless Tools
32 4. About the Version Numbers
33 5. Firmware installation
38 0. IMPORTANT INFORMATION BEFORE USING THIS DRIVER
39 -----------------------------------------------
41 Important Notice FOR ALL USERS OR DISTRIBUTORS!!!!
43 Intel wireless LAN adapters are engineered, manufactured, tested, and
44 quality checked to ensure that they meet all necessary local and
45 governmental regulatory agency requirements for the regions that they
46 are designated and/or marked to ship into. Since wireless LANs are
47 generally unlicensed devices that share spectrum with radars,
48 satellites, and other licensed and unlicensed devices, it is sometimes
49 necessary to dynamically detect, avoid, and limit usage to avoid
50 interference with these devices. In many instances Intel is required to
51 provide test data to prove regional and local compliance to regional and
52 governmental regulations before certification or approval to use the
53 product is granted. Intel's wireless LAN's EEPROM, firmware, and
54 software driver are designed to carefully control parameters that affect
55 radio operation and to ensure electromagnetic compliance (EMC). These
56 parameters include, without limitation, RF power, spectrum usage,
57 channel scanning, and human exposure.
59 For these reasons Intel cannot permit any manipulation by third parties
60 of the software provided in binary format with the wireless WLAN
61 adapters (e.g., the EEPROM and firmware). Furthermore, if you use any
62 patches, utilities, or code with the Intel wireless LAN adapters that
63 have been manipulated by an unauthorized party (i.e., patches,
64 utilities, or code (including open source code modifications) which have
65 not been validated by Intel), (i) you will be solely responsible for
66 ensuring the regulatory compliance of the products, (ii) Intel will bear
67 no liability, under any theory of liability for any issues associated
68 with the modified products, including without limitation, claims under
69 the warranty and/or issues arising from regulatory non-compliance, and
70 (iii) Intel will not provide or be required to assist in providing
71 support to any third parties for such modified products.
73 Note: Many regulatory agencies consider Wireless LAN adapters to be
74 modules, and accordingly, condition system-level regulatory approval
75 upon receipt and review of test data documenting that the antennas and
76 system configuration do not cause the EMC and radio operation to be
79 The drivers available for download from SourceForge are provided as a
80 part of a development project. Conformance to local regulatory
81 requirements is the responsibility of the individual developer. As
82 such, if you are interested in deploying or shipping a driver as part of
83 solution intended to be used for purposes other than development, please
84 obtain a tested driver from Intel Customer Support at:
86 http://support.intel.com/support/notebook/sb/CS-006408.htm
90 -----------------------------------------------
91 The following sections attempt to provide a brief introduction to using
92 the Intel(R) PRO/Wireless 2915ABG Driver for Linux.
94 This document is not meant to be a comprehensive manual on
95 understanding or using wireless technologies, but should be sufficient
96 to get you moving without wires on Linux.
98 For information on building and installing the driver, see the INSTALL
102 1.1. Overview of Features
103 -----------------------------------------------
104 The current release (1.0.8) supports the following features:
106 + BSS mode (Infrastructure, Managed)
108 + WEP (OPEN and SHARED KEY mode)
109 + 802.1x EAP via wpa_supplicant and xsupplicant
110 + Wireless Extension support
111 + Full B and G rate support (2200 and 2915)
112 + Full A rate support (2915 only)
113 + Transmit power control
114 + S state support (ACPI suspend/resume)
116 The following features are currently enabled, but not officially
120 + long/short preamble support
121 + Monitor mode (aka RFMon)
123 The distinction between officially supported and enabled is a reflection
124 on the amount of validation and interoperability testing that has been
125 performed on a given feature.
129 1.2. Command Line Parameters
130 -----------------------------------------------
132 Like many modules used in the Linux kernel, the Intel(R) PRO/Wireless
133 2915ABG Driver for Linux allows configuration options to be provided
134 as module parameters. The most common way to specify a module parameter
135 is via the command line.
139 % modprobe ipw2200 parameter=value
141 Where the supported parameter are:
144 Set to 0 to disable the auto scan-and-associate functionality of the
145 driver. If disabled, the driver will not attempt to scan
146 for and associate to a network until it has been configured with
147 one or more properties for the target network, for example configuring
148 the network SSID. Default is 1 (auto-associate)
150 Example: % modprobe ipw2200 associate=0
153 Set to 0 to disable the auto creation of an Ad-Hoc network
154 matching the channel and network name parameters provided.
158 channel number for association. The normal method for setting
159 the channel would be to use the standard wireless tools
160 (i.e. `iwconfig eth1 channel 10`), but it is useful sometimes
161 to set this while debugging. Channel 0 means 'ANY'
164 If using a debug build, this is used to control the amount of debug
165 info is logged. See the 'dvals' and 'load' script for more info on
166 how to use this (the dvals and load scripts are provided as part
167 of the ipw2200 development snapshot releases available from the
168 SourceForge project at http://ipw2200.sf.net)
171 Can be used to turn on experimental LED code.
172 0 = Off, 1 = On. Default is 0.
175 Can be used to set the default mode of the adapter.
176 0 = Managed, 1 = Ad-Hoc, 2 = Monitor
179 1.3. Wireless Extension Private Methods
180 -----------------------------------------------
182 As an interface designed to handle generic hardware, there are certain
183 capabilities not exposed through the normal Wireless Tool interface. As
184 such, a provision is provided for a driver to declare custom, or
185 private, methods. The Intel(R) PRO/Wireless 2915ABG Driver for Linux
186 defines several of these to configure various settings.
188 The general form of using the private wireless methods is:
190 % iwpriv $IFNAME method parameters
192 Where $IFNAME is the interface name the device is registered with
193 (typically eth1, customized via one of the various network interface
194 name managers, such as ifrename)
196 The supported private methods are:
199 Can be used to report out which IEEE mode the driver is
200 configured to support. Example:
202 % iwpriv eth1 get_mode
203 eth1 get_mode:802.11bg (6)
206 Can be used to configure which IEEE mode the driver will
210 % iwpriv eth1 set_mode {mode}
211 Where {mode} is a number in the range 1-7:
212 1 802.11a (2915 only)
214 3 802.11ab (2915 only)
216 5 802.11ag (2915 only)
218 7 802.11abg (2915 only)
221 Can be used to report configuration of preamble length.
224 Can be used to set the configuration of preamble length:
227 % iwpriv eth1 set_preamble {mode}
228 Where {mode} is one of:
230 0 Auto (long or short based on connection)
233 1.4. Sysfs Helper Files:
234 -----------------------------------------------
236 The Linux kernel provides a pseudo file system that can be used to
237 access various components of the operating system. The Intel(R)
238 PRO/Wireless 2915ABG Driver for Linux exposes several configuration
239 parameters through this mechanism.
241 An entry in the sysfs can support reading and/or writing. You can
242 typically query the contents of a sysfs entry through the use of cat,
243 and can set the contents via echo. For example:
245 % cat /sys/bus/pci/drivers/ipw2200/debug_level
247 Will report the current debug level of the driver's logging subsystem
248 (only available if CONFIG_IPW_DEBUG was configured when the driver was
251 You can set the debug level via:
253 % echo $VALUE > /sys/bus/pci/drivers/ipw2200/debug_level
255 Where $VALUE would be a number in the case of this sysfs entry. The
256 input to sysfs files does not have to be a number. For example, the
257 firmware loader used by hotplug utilizes sysfs entries for transfering
258 the firmware image from user space into the driver.
260 The Intel(R) PRO/Wireless 2915ABG Driver for Linux exposes sysfs entries
261 at two levels -- driver level, which apply to all instances of the driver
262 (in the event that there are more than one device installed) and device
263 level, which applies only to the single specific instance.
266 1.4.1 Driver Level Sysfs Helper Files
267 -----------------------------------------------
269 For the driver level files, look in /sys/bus/pci/drivers/ipw2200/
273 This controls the same global as the 'debug' module parameter
277 1.4.2 Device Level Sysfs Helper Files
278 -----------------------------------------------
280 For the device level files, look in
282 /sys/bus/pci/drivers/ipw2200/{PCI-ID}/
285 /sys/bus/pci/drivers/ipw2200/0000:02:01.0
287 For the device level files, see /sys/bus/pci/drivers/ipw2200:
291 0 = RF kill not enabled (radio on)
292 1 = SW based RF kill active (radio off)
293 2 = HW based RF kill active (radio off)
294 3 = Both HW and SW RF kill active (radio off)
296 0 = If SW based RF kill active, turn the radio back on
297 1 = If radio is on, activate SW based RF kill
299 NOTE: If you enable the SW based RF kill and then toggle the HW
300 based RF kill from ON -> OFF -> ON, the radio will NOT come back on
303 read-only access to the ucode version number
307 0 = LED code disabled
313 NOTE: The LED code has been reported to hang some systems when
314 running ifconfig and is therefore disabled by default.
318 -----------------------------------------------
320 When using a device in an Ad-Hoc network, it is useful to understand the
321 sequence and requirements for the driver to be able to create, join, or
324 The following attempts to provide enough information so that you can
325 have a consistent experience while using the driver as a member of an
328 2.1. Joining an Ad-Hoc Network
329 -----------------------------------------------
331 The easiest way to get onto an Ad-Hoc network is to join one that
334 2.2. Creating an Ad-Hoc Network
335 -----------------------------------------------
337 An Ad-Hoc networks is created using the syntax of the Wireless tool.
340 iwconfig eth1 mode ad-hoc essid testing channel 2
342 2.3. Merging Ad-Hoc Networks
343 -----------------------------------------------
346 3. Interaction with Wireless Tools
347 -----------------------------------------------
350 -----------------------------------------------
352 When configuring the mode of the adapter, all run-time configured parameters
353 are reset to the value used when the module was loaded. This includes
354 channels, rates, ESSID, etc.
357 4. About the Version Numbers
358 -----------------------------------------------
360 Due to the nature of open source development projects, there are
361 frequently changes being incorporated that have not gone through
362 a complete validation process. These changes are incorporated into
363 development snapshot releases.
365 Releases are numbered with a three level scheme:
367 major.minor.development
369 Any version where the 'development' portion is 0 (for example
370 1.0.0, 1.1.0, etc.) indicates a stable version that will be made
371 available for kernel inclusion.
373 Any version where the 'development' portion is not a 0 (for
374 example 1.0.1, 1.1.5, etc.) indicates a development version that is
375 being made available for testing and cutting edge users. The stability
376 and functionality of the development releases are not know. We make
377 efforts to try and keep all snapshots reasonably stable, but due to the
378 frequency of their release, and the desire to get those releases
379 available as quickly as possible, unknown anomalies should be expected.
381 The major version number will be incremented when significant changes
382 are made to the driver. Currently, there are no major changes planned.
384 5. Firmware installation
385 ----------------------------------------------
387 The driver requires a firmware image, download it and extract the
388 files under /lib/firmware (or wherever your hotplug's firmware.agent
389 will look for firmware files)
391 The firmware can be downloaded from the following URL:
393 http://ipw2200.sf.net/
397 -----------------------------------------------
399 For direct support of the 1.0.0 version, you can contact
400 http://supportmail.intel.com, or you can use the open source project
403 For general information and support, go to:
405 http://ipw2200.sf.net/
409 -----------------------------------------------
411 Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved.
413 This program is free software; you can redistribute it and/or modify it
414 under the terms of the GNU General Public License version 2 as
415 published by the Free Software Foundation.
417 This program is distributed in the hope that it will be useful, but WITHOUT
418 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
419 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
422 You should have received a copy of the GNU General Public License along with
423 this program; if not, write to the Free Software Foundation, Inc., 59
424 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
426 The full GNU General Public License is included in this distribution in the
430 James P. Ketrenos <ipw2100-admin@linux.intel.com>
431 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497