NAME
iwn —
Intel WiFi Link and Centrino IEEE
802.11 wireless network driver
SYNOPSIS
iwn* at pci? dev ? function ?
DESCRIPTION
The
iwn driver provides support for Intel Wireless WiFi Link
4965/5000/1000 and Centrino Wireless-N 1000/2000/6000 Series PCIe Mini Card
network adapters.
The Intel Wireless WiFi Link 4965AGN (codenamed Kedron) is a PCIe Mini Card
network adapter that operates in the 2GHz and 5GHz spectra. It has 2 transmit
paths and 3 receiver paths (2T3R). It is part of the fourth-generation
Centrino platform (codenamed Santa Rosa).
The Intel WiFi Link 5000 series is a family of wireless network adapters that
operate in the 2GHz and 5GHz spectra. They are part of the fifth-generation
Centrino platform (codenamed Montevina). These adapters are available in both
PCIe Mini Card (model code ending by MMW) and PCIe Half Mini Card (model code
ending by HMW) form factor. The
iwn driver provides support
for the 5100 (codenamed Shirley Peak 1x2), 5150 (codenamed Echo Peak-V), 5300
(codenamed Shirley Peak 3x3) and 5350 (codenamed Echo Peak-P) adapters. The
5100 and 5150 adapters have 1 transmit path and 2 receiver paths (1T2R). The
5300 and 5350 adapters have 3 transmit paths and 3 receiver paths (3T3R).
The Intel WiFi Link 1000 (codenamed Condor Peak) is a single-chip wireless
network adapter that operates in the 2GHz spectrum. It is part of the
sixth-generation Centrino platform (codenamed Calpella). It is available in
both PCIe Mini Card (model code ending by MMW) and PCIe Half Mini Card (model
code ending by HMW) form factor. It has 1 transmit path and 2 receiver paths
(1T2R).
The Intel Centrino Ultimate-N 6300 (codenamed Puma Peak 3x3) is a single-chip
wireless network adapter that operates in the 2GHz and 5GHz spectra. It has 3
transmit paths and 3 receiver paths (3T3R). The Intel Centrino Advanced-N 6250
(codenamed Kilmer Peak) is a combo WiFi/WiMAX network adapter that operates in
the 2GHz and 5GHz spectra. It has 2 transmit paths and 2 receiver paths
(2T2R). The Intel Centrino Advanced-N 6200 (codenamed Puma Peak 2x2) is a
wireless network adapter that operates in the 2GHz and 5GHz spectra. It has 2
transmit paths and 2 receiver paths (2T2R). These adapters are part of the
sixth-generation Centrino platform (codenamed Calpella).
The Intel Centrino Wireless-N 2230 (codename Jackson Peak) and Intel Centrino
Wireless-N 2200 (codename Marble Peak) are wireless network adapters that
operate in the 2GHz spectrum. These adapters have 2 transmit paths and 2
receiver paths (2T2R). The Intel Centrino Wireless-N 135 and Intel Centrino
Wireless-N 105 (codename Canyon Peak) also operate in the 2GHz spectrum. These
adapters have 1 transmit path and 1 receiver path (1T1R).
By default, the
iwn driver configures the adapter for BSS
operation (aka infrastructure mode). This mode requires the use of an access
point.
For more information on configuring this device, see
ifconfig(8).
CONFIGURATION
The
iwn driver can be configured at runtime with
ifconfig(8) using the
following parameters:
-
-
- bssid
bssid
- Set the desired BSSID.
-
-
- -bssid
- Unset the desired BSSID. The interface will automatically
select a BSSID in this mode, which is the default.
-
-
- chan
n
- Set the channel (radio frequency) to be used by the driver
based on the given channel ID n.
-
-
- -chan
- Unset the desired channel to be used by the driver. The
driver will automatically select a channel in this mode, which is the
default.
-
-
- media
media
- The iwn driver supports the following
media types:
- autoselect
- Enable autoselection of the media type and
options.
-
-
- mediaopt
opts
- The iwn driver supports the following
media options:
- monitor
- Select monitor mode.
-
-
- -mediaopt
opts
- Disable the specified media options on the driver and
return it to the default mode of operation (BSS).
-
-
- mode
mode
- The iwn driver supports the following
modes:
- 11a
- Force 802.11a operation.
- 11b
- Force 802.11b operation.
- 11g
- Force 802.11g operation.
-
-
- nwid
id
- Set the network ID. The id can either
be any text string up to 32 characters in length, or a series of
hexadecimal digits up to 64 digits. An empty id
string allows the interface to connect to any available access points. By
default the iwn driver uses an empty string. Note that
network ID is synonymous with Extended Service Set ID (ESSID).
-
-
- nwkey
key
- Enable WEP encryption using the specified
key. The key can either be a
string, a series of hexadecimal digits (preceded by ‘0x’), or
a set of keys of the form “n:k1,k2,k3,k4”, where
‘n’ specifies which of the keys will be used for transmitted
packets, and the four keys, “k1” through “k4”, are
configured as WEP keys. If a set of keys is specified, a comma
(‘,’) within the key must be escaped with a backslash. Note
that if multiple keys are used, their order must be the same within the
network. iwn is capable of using both 40-bit (5
characters or 10 hexadecimal digits) or 104-bit (13 characters or 26
hexadecimal digits) keys.
-
-
- -nwkey
- Disable WEP encryption. This is the default mode of
operation.
EXAMPLES
The following
ifconfig.if(5),
example configures iwn0 to join whatever network is available on boot, using
WEP key “0x1deadbeef1”, channel 11, obtaining an IP address using
DHCP:
dhcp NONE NONE NONE nwkey 0x1deadbeef1 chan 11
Configure iwn0 for WEP, using hex key “0x1deadbeef1”:
# ifconfig iwn0 nwkey 0x1deadbeef1
Return iwn0 to its default settings:
# ifconfig iwn0 -bssid -chan media autoselect \
nwid "" -nwkey
Join an existing BSS network, “my_net”:
# ifconfig iwn0 192.168.1.1 netmask 0xffffff00 nwid my_net
DIAGNOSTICS
- iwn%d: device timeout
- A frame dispatched to the hardware for transmission did
not complete in time. The driver will reset the hardware. This should not
happen.
- iwn%d: fatal firmware error
- For some reason, the firmware crashed. The driver will
reset the hardware. This should not happen.
- iwn%d: radio is disabled by hardware
switch
- The radio transmitter is off and thus no packet can go
out. The driver will reset the hardware. Make sure the laptop radio switch
is on.
- iwn%d: error %d, could not read
firmware %s
- For some reason, the driver was unable to read the
firmware image from the filesystem. The file might be missing or
corrupted.
- iwn%d: could not get firmware handle
%s
- iwn%d: could not read firmware
- The driver was unable to find the file with the proper
firmware image. It should be located in
/libdata/firmware/if_iwn.
- iwn%d: firmware file too short: %d
bytes
- The firmware image is corrupted and can't be loaded into
the adapter.
- iwn%d: could not load firmware
- An attempt to load the firmware into the adapter failed.
The driver will reset the hardware.
SEE ALSO
arp(4),
ifmedia(4),
intro(4),
netintro(4),
pci(4),
ifconfig.if(5),
ifconfig(8)
AUTHORS
The
iwn driver and this man page were written by
Damien Bergamini
<
damien.bergamini@free.fr>.