1.\" Copyright (c) 2007 Sam Leffler, Errno Consulting 2.\" 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.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd August 17, 2015 28.Dt WLANDEBUG 8 29.Os 30.Sh NAME 31.Nm wlandebug 32.Nd "set/query 802.11 wireless debugging messages" 33.Sh SYNOPSIS 34.Nm 35.Op Fl d | Fl i Ar ifnet 36.Op Fl flag|+flag Ar ... 37.Sh DESCRIPTION 38The 39.Nm 40command is a tool for enabling and disabling 41debugging messages in the 42.Xr wlan 4 43module. 44Running 45.Nm 46without any options will display the current messages 47enabled for the specified network interface 48(by default, ``wlan0'). 49The default debugging level for new interfaces can be set 50by specifying the 51.Fl d 52option. 53When run as the super-user 54.Nm 55can be used to enable and/or disable debugging messages. 56.Pp 57To enable debugging messages of a certain 58.Ar type 59use 60.Ar +type ; 61to disable such messages use 62.Ar -type . 63Multiple messages can be enabled and disabled with a single command. 64.Pp 65Messages are organized in the following groups: 66.Bl -tag -width ".Ar dumppkts" 67.It Ar debug 68general debugging facilities; equivalent to setting the debug 69parameter with 70.Xr ifconfig 8 . 71.It Ar dumppkts 72dump packet contents on transmit and receive. 73.It Ar crypto 74crypto-related work. 75.It Ar input 76errors encountered during input handling. 77.It Ar xrate 78extended rate set handling (for 802.11g). 79.It Ar elemid 80information element processing in 802.11 management frames. 81.It Ar node 82management of per-station state. 83.It Ar assoc 84802.11 station association processing; particularly useful to 85see when stations join and leave a BSS. 86.It Ar auth 87802.11 station authentication processing. 88.It Ar scan 89scanning operation; especially useful for debugging problems 90with not locating an access point. 91.It Ar output 92errors encountered during output handling. 93.It Ar state 94.Xr wlan 4 95state machine operation. 96.It Ar power 97802.11 power save operation; in hostap mode this enables 98copious information about buffered frames for stations operating 99in power save mode. 100.It Ar hwmp 101trace operation of Hybrid Wireless Mesh Protocol processing. 102.It Ar dot1xsm 103802.1x state machine operation; not presently meaningful as 802.1x protocol 104support is implemented in user mode by the 105.Xr hostapd 8 106program. 107.It Ar radius 108radius backend operation as it relates to 802.1x operation; 109not presently meaningful as 802.1x protocol 110support is implemented in user mode by the 111.Xr hostapd 8 112program. 113.It Ar raddump 114dump packets exchanged with the radius backend for 802.1x operation; 115not presently meaningful as 802.1x protocol 116support is implemented in user mode by the 117.Xr hostapd 8 118program. 119.It Ar mesh 120trace operation of 802.11s mesh protocol processing. 121.It Ar wpa 122trace operation of the WPA protocol; 123only partly meaningful as WPA protocol 124support is mostly implemented in user mode by the 125.Xr hostapd 8 126and 127.Xr wpa_supplicant 8 128programs. 129.It Ar acl 130trace operation of the Access Control List (ACL) support; see 131.Xr wlan_acl 4 132for more details. 133.It Ar wme 134trace operation of WME/WMM protocol processing. 135.It Ar superg 136trace operation of Atheros SuperG protocol processing. 137.It Ar doth 138trace operation of IEEE 802.11h protocol processing. 139.It Ar inact 140trace station inactivity processing; in particular, 141show when stations associated to an access point are dropped due to 142inactivity. 143.It Ar roam 144trace station mode roaming between access points. 145.It Ar rate 146trace transmit rate control operation. 147.El 148.Sh EXAMPLES 149The following might be used to debug basic station mode operation: 150.Pp 151.Dl "wlandebug -i wlan1 scan+auth+assoc" 152.Pp 153it enables debug messages while scanning, authenticating to 154an access point, and associating to an access point. 155.Sh SEE ALSO 156.Xr ifconfig 8 157.Pp 158The 159.Pa /usr/src/tools 160directory contains some utilities that might be relevant to debug wireless 161issues. 162.Sh NOTES 163Different wireless drivers support different debugging messages. 164Drivers such as 165.Xr ath 4 166and 167.Xr ral 4 168that depend on the 169.Xr wlan 4 170module for 802.11 protocol processing typically support 171most of the debugging messages while devices that 172implement parts of the 802.11 protocol in firmware do not. 173.Pp 174Some debugging messages are no longer meaningful 175because protocol processing has moved from the operating 176system to user mode programs such as 177.Xr hostapd 8 178and 179.Xr wpa_supplicant 8 . 180