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IPW(4)                   BSD Kernel Interfaces Manual                   IPW(4)

NAME
     ipw -- Intel PRO/Wireless 2100 IEEE 802.11b wireless network device

SYNOPSIS
     ipw* at pci?

DESCRIPTION
     The ipw driver provides support for the Intel PRO/Wireless 2100 Mini PCI
     network adapter.

     These are the modes the ipw driver can operate in:

     BSS mode       Also known as infrastructure mode, this is used when asso-
                    ciating with an access point, through which all traffic
                    passes.  This mode is the default.

     IBSS mode      Also known as IEEE ad-hoc mode or peer-to-peer mode.  This
                    is the standardized method of operating without an access
                    point.  Stations associate with a service set.  However,
                    actual connections between stations are peer-to-peer.

     monitor mode   In this mode the driver is able to receive packets without
                    associating with an access point.  This disables the
                    internal receive filter and enables the card to capture
                    packets from networks which it wouldn't normally have
                    access to, or to scan for access points.

     The ipw driver can be configured to use Wired Equivalent Privacy (WEP) or
     Wi-Fi Protected Access (WPA-PSK and WPA2-PSK).  WPA is the current
     encryption standard for wireless networks.  It is strongly recommended
     that WEP not be used as the sole mechanism to secure wireless communica-
     tion, due to serious weaknesses in it.  The ipw driver relies on the
     software 802.11 stack for both encryption and decryption of data frames.

     The ipw driver can be configured at runtime with ifconfig(8) or on boot
     with hostname.if(5).

FILES
     The driver needs at least version 1.3 of the following firmware files,
     which are loaded when an interface is brought up:

           /etc/firmware/ipw-bss
           /etc/firmware/ipw-ibss
           /etc/firmware/ipw-monitor

     These firmware files are not free because Intel refuses to grant distri-
     bution rights without contractual obligations.  As a result, even though
     OpenBSD includes the driver, the firmware files cannot be included and
     users have to find these files on their own.  The official person to
     state your views to about this issue is majid.awad@intel.com.

     A prepackaged version of the firmware can be installed using
     fw_update(1).

EXAMPLES
     The following example scans for available networks:

           # ifconfig ipw0 scan

     The following hostname.if(5) example configures ipw0 to join network
     ``mynwid'', using WPA key ``mywpakey'', obtaining an IP address using
     DHCP:

           nwid mynwid
           wpakey mywpakey
           dhcp

DIAGNOSTICS
     ipw0: device timeout  The driver will reset the hardware.  This should
     not happen.

     ipw0: error N, could not read firmware ...  For some reason, the driver
     was unable to read the firmware image from the filesystem.  The file
     might be missing or corrupted.

SEE ALSO
     arp(4), ifmedia(4), intro(4), netintro(4), pci(4), hostname.if(5),
     ifconfig(8)

AUTHORS
     The ipw driver was written by Damien Bergamini
     <damien.bergamini@free.fr>.

BSD                            February 17, 2015                           BSD