1204828c26
Reflect all recent changes in the manpage: - add adhoc-demo and hostap into list of supported modes; add few examples for them; - mention encryption/decryption offload for CCMP cipher; - extend list of driver messages in the DIAGNOSTICS; - document hostap mode limitations / powersave instability in the CAVEATS section. Differential Revision: https://reviews.freebsd.org/D5149
219 lines
6.6 KiB
Groff
219 lines
6.6 KiB
Groff
.\" Copyright (c) 2004-2007
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.\" Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
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.\" Benjamin Close <Benjamin.Close@clearchain.com>. All rights reserved.
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.\" Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice unmodified, this list of conditions, and the following
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.\" disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 31, 2016
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.Dt WPI 4
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.Os
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.Sh NAME
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.Nm wpi
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.Nd "Intel 3945ABG Wireless LAN IEEE 802.11 driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device wpi"
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.Cd "device wpifw"
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.Cd "device pci"
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.Cd "device wlan"
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.Cd "device wlan_amrr"
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.Cd "device firmware"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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if_wpi_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the
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.Tn Intel
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3945ABG Wireless network adapter.
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The driver supports
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.Cm station ,
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.Cm adhoc ,
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.Cm adhoc-demo ,
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.Cm hostap ,
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and
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.Cm monitor
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mode operation.
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Only one virtual interface may be configured at any time.
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.Pp
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The
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.Nm
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driver can be configured to use
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Wired Equivalent Privacy (WEP) or
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Wi-Fi Protected Access (WPA-PSK and WPA2-PSK).
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WPA is the de facto encryption standard for wireless networks.
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It is strongly recommended that WEP
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not be used as the sole mechanism
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to secure wireless communication,
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due to serious weaknesses in it.
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The
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.Nm
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driver offloads both encryption and decryption of data frames to the
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hardware for the CCMP cipher.
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.Pp
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This driver requires the firmware built with the
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.Nm wpifw
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module to work.
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.Pp
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The
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.Nm
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driver can be configured at runtime with
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.Xr ifconfig 8 .
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.Sh FILES
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.Bl -tag -width ".Pa /usr/share/doc/legal/intel_wpi.LICENSE" -compact
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.It Pa /usr/share/doc/legal/intel_wpi.LICENSE
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.Nm
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firmware license
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.El
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.Sh EXAMPLES
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Join an existing BSS network (i.e., connect to an access point):
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev wpi0 inet 192.168.0.20 \e
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netmask 0xffffff00
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.Ed
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.Pp
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Join a specific BSS network with network name
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.Dq Li my_net :
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.Pp
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.Dl "ifconfig wlan0 create wlandev wpi0 ssid my_net up"
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.Pp
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Join a specific BSS network with 64-bit WEP encryption:
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev wpi0 ssid my_net \e
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wepmode on wepkey 0x1234567890 weptxkey 1 up
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.Ed
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.Pp
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Create an IBSS network with 128-bit WEP encryption on the channel 4:
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev wpi0 wlanmode adhoc ssid my_net \e
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wepmode on wepkey 0x01020304050607080910111213 weptxkey 1 \e
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channel 4
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.Ed
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.Pp
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Join/create an 802.11b IBSS network with network name
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.Dq Li my_net :
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev wpi0 wlanmode adhoc
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ifconfig wlan0 inet 192.168.0.22 netmask 0xffffff00 ssid my_net \e
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mode 11b
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.Ed
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.Pp
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Create an 802.11g host-based access point:
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev wpi0 wlanmode hostap
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ifconfig wlan0 inet 192.168.0.10 netmask 0xffffff00 ssid my_ap \e
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mode 11g
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.Ed
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "wpi%d: could not load firmware image '%s'"
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The driver failed to load the firmware image using the
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.Xr firmware 9
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subsystem.
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Verify the
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.Xr wpifw
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firmware module is installed.
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.It "wpi%d: %s: timeout waiting for adapter to initialize, error %d"
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The onboard microcontroller failed to initialize in time.
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This should not happen.
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.It "wpi%d: %s: could not load boot firmware"
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An attempt to upload the boot firmware image to the onboard microcontroller
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failed.
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This should not happen.
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.It "wpi%d: device timeout"
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A frame dispatched to the hardware for transmission did not complete in time.
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The driver will reset the hardware and continue.
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This should not happen.
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.It "wpi%d: scan timeout"
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Firmware scan command response was not received in time.
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The driver will reset the hardware and continue.
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This should not happen.
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.It "wpi%d: fatal firmware error"
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The onboard microcontroller crashed for some reason.
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The driver will reset the hardware and continue.
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This should not happen.
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.It "wpi%d: RF switch: radio disabled"
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The hardware switch controlling the radio is currently turned off.
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Data transmission is not possible in this state.
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.It "wpi%d: can't map mem space"
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The driver was unable to map the device registers into the host address space.
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This should not happen.
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.It "wpi%d: can't map interrupt"
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The driver was unable to allocate an IRQ for the device interrupt.
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This should not happen.
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.It "wpi%d: can't establish interrupt, error %d"
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The driver was unable to install the device interrupt handler.
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This should not happen.
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.It "wpi%d: %s: bus_dmamap_load failed, error %d"
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The driver was unable to map newly allocated mbuf to device
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visible address space.
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Contents of currently received frame will be lost.
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This should not happen.
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.El
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.Sh SEE ALSO
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.Xr pci 4 ,
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.Xr wlan 4 ,
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.Xr wlan_amrr 4 ,
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.Xr wlan_ccmp 4 ,
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.Xr wlan_tkip 4 ,
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.Xr wlan_wep 4 ,
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.Xr wlan_xauth 4 ,
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.Xr wpifw 4 ,
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.Xr hostapd 8 ,
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.Xr ifconfig 8 ,
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.Xr wpa_supplicant 8
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.Sh AUTHORS
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.An -nosplit
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The original
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.Nm
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driver was written for
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.Ox
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by
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.An Damien Bergamini Aq Mt damien.bergamini@free.fr .
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.An Benjamin Close Aq Mt benjsc@FreeBSD.org
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ported
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.Nm
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to
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.Fx .
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.Sh CAVEATS
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Hostap mode is not directly supported by the device;
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it is implemented through IBSS mode (as a result, DFS/passive
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channels are not available in this mode).
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.Pp
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Powersave may be unstable on some networks (results in
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occasional 'wpi%d: device timeout' messages); you can try
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to disable it to improve device stability.
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