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.Dd August 17, 2015 26.Dt WLANDEBUG 8 27.Os 28.Sh NAME 29.Nm wlandebug 30.Nd "set/query 802.11 wireless debugging messages" 31.Sh SYNOPSIS 32.Nm 33.Op Fl d | Fl i Ar ifnet 34.Op Fl flag|+flag Ar ... 35.Sh DESCRIPTION 36The 37.Nm 38command is a tool for enabling and disabling 39debugging messages in the 40.Xr wlan 4 41module. 42Running 43.Nm 44without any options will display the current messages 45enabled for the specified network interface 46(by default, ``wlan0'). 47The default debugging level for new interfaces can be set 48by specifying the 49.Fl d 50option. 51When run as the super-user 52.Nm 53can be used to enable and/or disable debugging messages. 54.Pp 55To enable debugging messages of a certain 56.Ar type 57use 58.Ar +type ; 59to disable such messages use 60.Ar -type . 61Multiple messages can be enabled and disabled with a single command. 62.Pp 63Messages are organized in the following groups: 64.Bl -tag -width ".Ar dumppkts" 65.It Ar debug 66general debugging facilities; equivalent to setting the debug 67parameter with 68.Xr ifconfig 8 . 69.It Ar dumppkts 70dump packet contents on transmit and receive. 71.It Ar crypto 72crypto-related work. 73.It Ar input 74errors encountered during input handling. 75.It Ar xrate 76extended rate set handling (for 802.11g). 77.It Ar elemid 78information element processing in 802.11 management frames. 79.It Ar node 80management of per-station state. 81.It Ar assoc 82802.11 station association processing; particularly useful to 83see when stations join and leave a BSS. 84.It Ar auth 85802.11 station authentication processing. 86.It Ar scan 87scanning operation; especially useful for debugging problems 88with not locating an access point. 89.It Ar output 90errors encountered during output handling. 91.It Ar state 92.Xr wlan 4 93state machine operation. 94.It Ar power 95802.11 power save operation; in hostap mode this enables 96copious information about buffered frames for stations operating 97in power save mode. 98.It Ar hwmp 99trace operation of Hybrid Wireless Mesh Protocol processing. 100.It Ar dot1xsm 101802.1x state machine operation; not presently meaningful as 802.1x protocol 102support is implemented in user mode by the 103.Xr hostapd 8 104program. 105.It Ar radius 106radius backend operation as it relates to 802.1x operation; 107not presently meaningful as 802.1x protocol 108support is implemented in user mode by the 109.Xr hostapd 8 110program. 111.It Ar raddump 112dump packets exchanged with the radius backend for 802.1x operation; 113not presently meaningful as 802.1x protocol 114support is implemented in user mode by the 115.Xr hostapd 8 116program. 117.It Ar mesh 118trace operation of 802.11s mesh protocol processing. 119.It Ar wpa 120trace operation of the WPA protocol; 121only partly meaningful as WPA protocol 122support is mostly implemented in user mode by the 123.Xr hostapd 8 124and 125.Xr wpa_supplicant 8 126programs. 127.It Ar acl 128trace operation of the Access Control List (ACL) support; see 129.Xr wlan_acl 4 130for more details. 131.It Ar wme 132trace operation of WME/WMM protocol processing. 133.It Ar superg 134trace operation of Atheros SuperG protocol processing. 135.It Ar doth 136trace operation of IEEE 802.11h protocol processing. 137.It Ar inact 138trace station inactivity processing; in particular, 139show when stations associated to an access point are dropped due to 140inactivity. 141.It Ar roam 142trace station mode roaming between access points. 143.It Ar rate 144trace transmit rate control operation. 145.El 146.Sh EXAMPLES 147The following might be used to debug basic station mode operation: 148.Pp 149.Dl "wlandebug -i wlan1 scan+auth+assoc" 150.Pp 151it enables debug messages while scanning, authenticating to 152an access point, and associating to an access point. 153.Sh SEE ALSO 154.Xr ifconfig 8 155.Pp 156The 157.Pa /usr/src/tools 158directory contains some utilities that might be relevant to debug wireless 159issues. 160.Sh NOTES 161Different wireless drivers support different debugging messages. 162Drivers such as 163.Xr ath 4 164and 165.Xr ral 4 166that depend on the 167.Xr wlan 4 168module for 802.11 protocol processing typically support 169most of the debugging messages while devices that 170implement parts of the 802.11 protocol in firmware do not. 171.Pp 172Some debugging messages are no longer meaningful 173because protocol processing has moved from the operating 174system to user mode programs such as 175.Xr hostapd 8 176and 177.Xr wpa_supplicant 8 . 178