1 .. SPDX-License-Identifier: GPL-2.0
2 .. include:: <isonum.txt>
4 ==============================================
5 Intel(R) PRO/Wireless 2915ABG Driver for Linux
6 ==============================================
11 - Intel(R) PRO/Wireless 2200BG Network Connection
12 - Intel(R) PRO/Wireless 2915ABG Network Connection
14 Note: The Intel(R) PRO/Wireless 2915ABG Driver for Linux and Intel(R)
15 PRO/Wireless 2200BG Driver for Linux is a unified driver that works on
16 both hardware adapters listed above. In this document the Intel(R)
17 PRO/Wireless 2915ABG Driver for Linux will be used to reference the
20 Copyright |copy| 2004-2006, Intel Corporation
30 0. IMPORTANT INFORMATION BEFORE USING THIS DRIVER
32 1.1. Overview of features
33 1.2. Module parameters
34 1.3. Wireless Extension Private Methods
35 1.4. Sysfs Helper Files
36 1.5. Supported channels
38 3. Interacting with Wireless Tools
41 4. About the Version Numbers
42 5. Firmware installation
47 0. IMPORTANT INFORMATION BEFORE USING THIS DRIVER
48 =================================================
50 Important Notice FOR ALL USERS OR DISTRIBUTORS!!!!
52 Intel wireless LAN adapters are engineered, manufactured, tested, and
53 quality checked to ensure that they meet all necessary local and
54 governmental regulatory agency requirements for the regions that they
55 are designated and/or marked to ship into. Since wireless LANs are
56 generally unlicensed devices that share spectrum with radars,
57 satellites, and other licensed and unlicensed devices, it is sometimes
58 necessary to dynamically detect, avoid, and limit usage to avoid
59 interference with these devices. In many instances Intel is required to
60 provide test data to prove regional and local compliance to regional and
61 governmental regulations before certification or approval to use the
62 product is granted. Intel's wireless LAN's EEPROM, firmware, and
63 software driver are designed to carefully control parameters that affect
64 radio operation and to ensure electromagnetic compliance (EMC). These
65 parameters include, without limitation, RF power, spectrum usage,
66 channel scanning, and human exposure.
68 For these reasons Intel cannot permit any manipulation by third parties
69 of the software provided in binary format with the wireless WLAN
70 adapters (e.g., the EEPROM and firmware). Furthermore, if you use any
71 patches, utilities, or code with the Intel wireless LAN adapters that
72 have been manipulated by an unauthorized party (i.e., patches,
73 utilities, or code (including open source code modifications) which have
74 not been validated by Intel), (i) you will be solely responsible for
75 ensuring the regulatory compliance of the products, (ii) Intel will bear
76 no liability, under any theory of liability for any issues associated
77 with the modified products, including without limitation, claims under
78 the warranty and/or issues arising from regulatory non-compliance, and
79 (iii) Intel will not provide or be required to assist in providing
80 support to any third parties for such modified products.
82 Note: Many regulatory agencies consider Wireless LAN adapters to be
83 modules, and accordingly, condition system-level regulatory approval
84 upon receipt and review of test data documenting that the antennas and
85 system configuration do not cause the EMC and radio operation to be
88 The drivers available for download from SourceForge are provided as a
89 part of a development project. Conformance to local regulatory
90 requirements is the responsibility of the individual developer. As
91 such, if you are interested in deploying or shipping a driver as part of
92 solution intended to be used for purposes other than development, please
93 obtain a tested driver from Intel Customer Support at:
95 http://support.intel.com
101 The following sections attempt to provide a brief introduction to using
102 the Intel(R) PRO/Wireless 2915ABG Driver for Linux.
104 This document is not meant to be a comprehensive manual on
105 understanding or using wireless technologies, but should be sufficient
106 to get you moving without wires on Linux.
108 For information on building and installing the driver, see the INSTALL
112 1.1. Overview of Features
113 -------------------------
114 The current release (1.1.2) supports the following features:
116 + BSS mode (Infrastructure, Managed)
118 + WEP (OPEN and SHARED KEY mode)
119 + 802.1x EAP via wpa_supplicant and xsupplicant
120 + Wireless Extension support
121 + Full B and G rate support (2200 and 2915)
122 + Full A rate support (2915 only)
123 + Transmit power control
124 + S state support (ACPI suspend/resume)
126 The following features are currently enabled, but not officially
130 + long/short preamble support
131 + Monitor mode (aka RFMon)
133 The distinction between officially supported and enabled is a reflection
134 on the amount of validation and interoperability testing that has been
135 performed on a given feature.
139 1.2. Command Line Parameters
140 ----------------------------
142 Like many modules used in the Linux kernel, the Intel(R) PRO/Wireless
143 2915ABG Driver for Linux allows configuration options to be provided
144 as module parameters. The most common way to specify a module parameter
145 is via the command line.
147 The general form is::
149 % modprobe ipw2200 parameter=value
151 Where the supported parameter are:
154 Set to 0 to disable the auto scan-and-associate functionality of the
155 driver. If disabled, the driver will not attempt to scan
156 for and associate to a network until it has been configured with
157 one or more properties for the target network, for example configuring
158 the network SSID. Default is 0 (do not auto-associate)
160 Example: % modprobe ipw2200 associate=0
163 Set to 0 to disable the auto creation of an Ad-Hoc network
164 matching the channel and network name parameters provided.
168 channel number for association. The normal method for setting
169 the channel would be to use the standard wireless tools
170 (i.e. `iwconfig eth1 channel 10`), but it is useful sometimes
171 to set this while debugging. Channel 0 means 'ANY'
174 If using a debug build, this is used to control the amount of debug
175 info is logged. See the 'dvals' and 'load' script for more info on
176 how to use this (the dvals and load scripts are provided as part
177 of the ipw2200 development snapshot releases available from the
178 SourceForge project at http://ipw2200.sf.net)
181 Can be used to turn on experimental LED code.
182 0 = Off, 1 = On. Default is 1.
185 Can be used to set the default mode of the adapter.
186 0 = Managed, 1 = Ad-Hoc, 2 = Monitor
189 1.3. Wireless Extension Private Methods
190 ---------------------------------------
192 As an interface designed to handle generic hardware, there are certain
193 capabilities not exposed through the normal Wireless Tool interface. As
194 such, a provision is provided for a driver to declare custom, or
195 private, methods. The Intel(R) PRO/Wireless 2915ABG Driver for Linux
196 defines several of these to configure various settings.
198 The general form of using the private wireless methods is::
200 % iwpriv $IFNAME method parameters
202 Where $IFNAME is the interface name the device is registered with
203 (typically eth1, customized via one of the various network interface
204 name managers, such as ifrename)
206 The supported private methods are:
209 Can be used to report out which IEEE mode the driver is
210 configured to support. Example:
212 % iwpriv eth1 get_mode
213 eth1 get_mode:802.11bg (6)
216 Can be used to configure which IEEE mode the driver will
221 % iwpriv eth1 set_mode {mode}
223 Where {mode} is a number in the range 1-7:
225 == =====================
226 1 802.11a (2915 only)
228 3 802.11ab (2915 only)
230 5 802.11ag (2915 only)
232 7 802.11abg (2915 only)
233 == =====================
236 Can be used to report configuration of preamble length.
239 Can be used to set the configuration of preamble length:
243 % iwpriv eth1 set_preamble {mode}
245 Where {mode} is one of:
247 == ========================================
249 0 Auto (long or short based on connection)
250 == ========================================
253 1.4. Sysfs Helper Files
254 -----------------------
256 The Linux kernel provides a pseudo file system that can be used to
257 access various components of the operating system. The Intel(R)
258 PRO/Wireless 2915ABG Driver for Linux exposes several configuration
259 parameters through this mechanism.
261 An entry in the sysfs can support reading and/or writing. You can
262 typically query the contents of a sysfs entry through the use of cat,
263 and can set the contents via echo. For example::
265 % cat /sys/bus/pci/drivers/ipw2200/debug_level
267 Will report the current debug level of the driver's logging subsystem
268 (only available if CONFIG_IPW2200_DEBUG was configured when the driver
271 You can set the debug level via::
273 % echo $VALUE > /sys/bus/pci/drivers/ipw2200/debug_level
275 Where $VALUE would be a number in the case of this sysfs entry. The
276 input to sysfs files does not have to be a number. For example, the
277 firmware loader used by hotplug utilizes sysfs entries for transferring
278 the firmware image from user space into the driver.
280 The Intel(R) PRO/Wireless 2915ABG Driver for Linux exposes sysfs entries
281 at two levels -- driver level, which apply to all instances of the driver
282 (in the event that there are more than one device installed) and device
283 level, which applies only to the single specific instance.
286 1.4.1 Driver Level Sysfs Helper Files
287 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
289 For the driver level files, look in /sys/bus/pci/drivers/ipw2200/
292 This controls the same global as the 'debug' module parameter
296 1.4.2 Device Level Sysfs Helper Files
297 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
299 For the device level files, look in::
301 /sys/bus/pci/drivers/ipw2200/{PCI-ID}/
305 /sys/bus/pci/drivers/ipw2200/0000:02:01.0
307 For the device level files, see /sys/bus/pci/drivers/ipw2200:
312 == =========================================
313 0 RF kill not enabled (radio on)
314 1 SW based RF kill active (radio off)
315 2 HW based RF kill active (radio off)
316 3 Both HW and SW RF kill active (radio off)
317 == =========================================
321 == ==================================================
322 0 If SW based RF kill active, turn the radio back on
323 1 If radio is on, activate SW based RF kill
324 == ==================================================
328 If you enable the SW based RF kill and then toggle the HW
329 based RF kill from ON -> OFF -> ON, the radio will NOT come back on
332 read-only access to the ucode version number
352 The LED code has been reported to hang some systems when
353 running ifconfig and is therefore disabled by default.
356 1.5. Supported channels
357 -----------------------
359 Upon loading the Intel(R) PRO/Wireless 2915ABG Driver for Linux, a
360 message stating the detected geography code and the number of 802.11
361 channels supported by the card will be displayed in the log.
363 The geography code corresponds to a regulatory domain as shown in the
366 +------+----------------------------+--------------------+
367 | | | Supported channels |
368 | Code | Geography +----------+---------+
369 | | | 802.11bg | 802.11a |
370 +======+============================+==========+=========+
371 | --- | Restricted | 11 | 0 |
372 +------+----------------------------+----------+---------+
373 | ZZF | Custom US/Canada | 11 | 8 |
374 +------+----------------------------+----------+---------+
375 | ZZD | Rest of World | 13 | 0 |
376 +------+----------------------------+----------+---------+
377 | ZZA | Custom USA & Europe & High | 11 | 13 |
378 +------+----------------------------+----------+---------+
379 | ZZB | Custom NA & Europe | 11 | 13 |
380 +------+----------------------------+----------+---------+
381 | ZZC | Custom Japan | 11 | 4 |
382 +------+----------------------------+----------+---------+
383 | ZZM | Custom | 11 | 0 |
384 +------+----------------------------+----------+---------+
385 | ZZE | Europe | 13 | 19 |
386 +------+----------------------------+----------+---------+
387 | ZZJ | Custom Japan | 14 | 4 |
388 +------+----------------------------+----------+---------+
389 | ZZR | Rest of World | 14 | 0 |
390 +------+----------------------------+----------+---------+
391 | ZZH | High Band | 13 | 4 |
392 +------+----------------------------+----------+---------+
393 | ZZG | Custom Europe | 13 | 4 |
394 +------+----------------------------+----------+---------+
395 | ZZK | Europe | 13 | 24 |
396 +------+----------------------------+----------+---------+
397 | ZZL | Europe | 11 | 13 |
398 +------+----------------------------+----------+---------+
401 =====================
403 When using a device in an Ad-Hoc network, it is useful to understand the
404 sequence and requirements for the driver to be able to create, join, or
407 The following attempts to provide enough information so that you can
408 have a consistent experience while using the driver as a member of an
411 2.1. Joining an Ad-Hoc Network
412 ------------------------------
414 The easiest way to get onto an Ad-Hoc network is to join one that
417 2.2. Creating an Ad-Hoc Network
418 -------------------------------
420 An Ad-Hoc networks is created using the syntax of the Wireless tool.
423 iwconfig eth1 mode ad-hoc essid testing channel 2
425 2.3. Merging Ad-Hoc Networks
426 ----------------------------
429 3. Interaction with Wireless Tools
430 ==================================
435 When configuring the mode of the adapter, all run-time configured parameters
436 are reset to the value used when the module was loaded. This includes
437 channels, rates, ESSID, etc.
442 The 'iwconfig ethX sens XX' command will not set the signal sensitivity
443 threshold, as described in iwconfig documentation, but rather the number
444 of consecutive missed beacons that will trigger handover, i.e. roaming
445 to another access point. At the same time, it will set the disassociation
446 threshold to 3 times the given value.
449 4. About the Version Numbers
450 =============================
452 Due to the nature of open source development projects, there are
453 frequently changes being incorporated that have not gone through
454 a complete validation process. These changes are incorporated into
455 development snapshot releases.
457 Releases are numbered with a three level scheme:
459 major.minor.development
461 Any version where the 'development' portion is 0 (for example
462 1.0.0, 1.1.0, etc.) indicates a stable version that will be made
463 available for kernel inclusion.
465 Any version where the 'development' portion is not a 0 (for
466 example 1.0.1, 1.1.5, etc.) indicates a development version that is
467 being made available for testing and cutting edge users. The stability
468 and functionality of the development releases are not know. We make
469 efforts to try and keep all snapshots reasonably stable, but due to the
470 frequency of their release, and the desire to get those releases
471 available as quickly as possible, unknown anomalies should be expected.
473 The major version number will be incremented when significant changes
474 are made to the driver. Currently, there are no major changes planned.
476 5. Firmware installation
477 ========================
479 The driver requires a firmware image, download it and extract the
480 files under /lib/firmware (or wherever your hotplug's firmware.agent
481 will look for firmware files)
483 The firmware can be downloaded from the following URL:
485 http://ipw2200.sf.net/
491 For direct support of the 1.0.0 version, you can contact
492 http://supportmail.intel.com, or you can use the open source project
495 For general information and support, go to:
497 http://ipw2200.sf.net/
503 Copyright |copy| 2003 - 2006 Intel Corporation. All rights reserved.
505 This program is free software; you can redistribute it and/or modify it
506 under the terms of the GNU General Public License version 2 as
507 published by the Free Software Foundation.
509 This program is distributed in the hope that it will be useful, but WITHOUT
510 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
511 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
514 You should have received a copy of the GNU General Public License along with
515 this program; if not, write to the Free Software Foundation, Inc., 59
516 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
518 The full GNU General Public License is included in this distribution in the
523 James P. Ketrenos <ipw2100-admin@linux.intel.com>
525 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497