.\" $OpenBSD: iwx.4,v 1.1 2020/02/15 08:48:30 stsp Exp $ .\" .\" Copyright (c) 2020 Stefan Sperling .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above .\" copyright notice and this permission notice appear in all copies. .\" .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" .Dd $Mdocdate: February 15 2020 $ .Dt IWX 4 .Os .Sh NAME .Nm iwx .Nd Intel AX200 IEEE 802.11a/ac/ax/b/g/n wireless network devices .Sh SYNOPSIS .Cd "iwx* at pci?" .Sh DESCRIPTION The .Nm driver provides support for Intel Wireless AX200 M.2 network adapters. .Pp These are the modes the .Nm driver can operate in: .Bl -tag -width "IBSS-masterXX" .It BSS mode Also known as .Em infrastructure mode, this is used when associating with an access point, through which all traffic passes. This mode is the default. .It 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. .El .Pp The .Nm driver can be configured to use Wired Equivalent Privacy (WEP) or Wi-Fi Protected Access (WPA1 and WPA2). WPA2 is the current encryption standard for wireless networks. It is strongly recommended that neither WEP nor WPA1 are used as the sole mechanism to secure wireless communication, due to serious weaknesses. WPA1 is disabled by default and may be enabled using the option .Qq Cm wpaprotos Ar wpa1,wpa2 . For standard WPA networks which use pre-shared keys (PSK), keys are configured using the .Qq Cm wpakey option. WPA-Enterprise networks require use of the wpa_supplicant package. .\"The .\".Nm .\"driver offloads both encryption and decryption of unicast data frames to the .\"hardware for the CCMP cipher. .Pp The .Nm driver can be configured at runtime with .Xr ifconfig 8 or on boot with .Xr hostname.if 5 . .Sh FILES The driver needs one of the following firmware files, which are loaded when an interface is brought up: .Pp .Bl -tag -width Ds -offset indent -compact .It Pa /etc/firmware/iwx-cc-a0-46 .El .Pp These firmware files are not free because Intel refuses to grant distribution rights without contractual obligations. As a result, even though .Ox includes the driver, the firmware files cannot be included and users have to download these files on their own. .Pp A prepackaged version of the firmware can be installed using .Xr fw_update 1 . .Sh EXAMPLES The following example scans for available networks: .Pp .Dl # ifconfig iwx0 scan .Pp The following .Xr hostname.if 5 example configures iwx0 to join network .Dq mynwid , using WPA key .Dq mywpakey , obtaining an IP address using DHCP: .Bd -literal -offset indent nwid mynwid wpakey mywpakey dhcp .Ed .Sh DIAGNOSTICS .Bl -diag .It "iwx0: 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. .It "iwx0: fatal firmware error" For some reason, the firmware crashed. The driver will reset the hardware. This should not happen. .It "iwx0: 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. .It "iwx0: could not read firmware ... (error N)" For some reason, the driver was unable to read the firmware image from the filesystem. The file might be missing or corrupted. .It "iwx0: firmware too short: N bytes" The firmware image is corrupted and can't be loaded into the adapter. .It "iwx0: could not load firmware" An attempt to load the firmware into the adapter failed. The driver will reset the hardware. .El .Sh SEE ALSO .Xr arp 4 , .Xr ifmedia 4 , .Xr intro 4 , .Xr netintro 4 , .Xr pci 4 , .Xr hostname.if 5 , .Xr ifconfig 8 .Sh HISTORY The .Nm device driver first appeared in .Ox 6.7 . .Sh CAVEATS The .Nm driver does not support any of the 802.11ac and 802.11ax capabilities offered by the adapters. Support for 802.11n 40MHz channels and Tx aggregation is not yet implemented. Additional work is required in .Xr ieee80211 9 before those features can be supported. .Pp This driver does not support powersave mode.