1.\" Copyright (c) 1997, 1998, 1999 2.\" Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by Bill Paul. 15.\" 4. Neither the name of the author nor the names of any co-contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 23.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 29.\" THE POSSIBILITY OF SUCH DAMAGE. 30.\" 31.\" $FreeBSD$ 32.\" 33.Dd July 16, 2005 34.Dt AN 4 35.Os 36.Sh NAME 37.Nm an 38.Nd "Aironet Communications 4500/4800 wireless network adapter driver" 39.Sh SYNOPSIS 40To compile this driver into the kernel, 41place the following lines in your 42kernel configuration file: 43.Bd -ragged -offset indent 44.Cd "device an" 45.Cd "device wlan" 46.Ed 47.Pp 48Alternatively, to load the driver as a 49module at boot time, place the following line in 50.Xr loader.conf 5 : 51.Bd -literal -offset indent 52if_an_load="YES" 53.Ed 54.Sh DESCRIPTION 55The 56.Nm 57driver provides support for Aironet Communications 4500 and 4800 58wireless network adapters and variants, including the following: 59.Pp 60.Bl -bullet -compact -offset indent 61.It 62Aironet Communications 4500 and 4800 series 63.It 64Cisco Aironet 340 and 350 series 65.It 66Xircom Wireless Ethernet Adapter 67.El 68.Pp 69Support for these devices include the ISA, PCI and PCMCIA 70varieties. 71The Aironet 4500 series adapters operate at 1 and 2Mbps while 72the Aironet 4800 series and Cisco adapters can operate at 1, 2, 5.5 and 11Mbps. 73The ISA, PCI 74and PCMCIA devices are all based on the same core PCMCIA modules 75and all have the same programming interface, however unlike the 76Lucent WaveLAN/IEEE cards, the ISA and PCI cards appear to the 77host as normal ISA and PCI devices and do not require any PCCARD 78support. 79.Pp 80The PCMCIA Aironet cards require PC Card support, including the 81kernel 82.Xr pccard 4 83driver. 84ISA cards can either be configured to use ISA Plug and Play 85or to use a particular I/O address and IRQ 86by properly setting the DIP switches on the board. 87(The default 88switch setting is for Plug and Play.) 89The 90.Nm 91driver has Plug and Play support and will work in either configuration, 92however when using a hard-wired I/O address and IRQ, the driver 93configuration and the NIC's switch settings must agree. 94PCI cards 95require no switch settings of any kind and will be automatically 96probed and attached. 97.Pp 98All host/device interaction with the Aironet cards is via programmed I/O. 99The Aironet devices support 802.11 and 802.3 frames, power management, 100BSS (infrastructure) and IBSS (ad-hoc) operation modes. 101The 102.Nm 103driver encapsulates all IP and ARP traffic as 802.11 frames, however 104it can receive either 802.11 or 802.3 frames. 105Transmit speed is 106selectable between 1Mbps, 2Mbps, 5.5Mbps, 11Mbps or 107"auto" (the NIC automatically chooses the best speed). 108.Pp 109By default, the 110.Nm 111driver configures the Aironet card for infrastructure operation. 112.Pp 113For more information on configuring this device, see 114.Xr ifconfig 8 . 115.Sh DIAGNOSTICS 116.Bl -diag 117.It "an%d: init failed" 118The Aironet card failed to become ready after an initialization command was 119issued. 120.It "an%d: failed to allocate %d bytes on NIC" 121The driver was unable to allocate memory for transmit frames in the 122NIC's on-board RAM. 123.It "an%d: device timeout" 124The Aironet card failed to generate an interrupt to acknowledge a transmit 125command. 126.El 127.Sh SEE ALSO 128.Xr altq 4 , 129.Xr arp 4 , 130.Xr miibus 4 , 131.Xr netintro 4 , 132.Xr wlan 4 , 133.Xr ancontrol 8 , 134.Xr ifconfig 8 135.Sh HISTORY 136The 137.Nm 138device driver first appeared in 139.Fx 4.0 . 140.Sh AUTHORS 141The 142.Nm 143driver was written by 144.An Bill Paul Aq Mt wpaul@ee.columbia.edu . 145