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+.\" Copyright (c) 2007 Sam Leffler, Errno Consulting
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd August 17, 2015
+.Dt WLANDEBUG 8
+.Os
+.Sh NAME
+.Nm wlandebug
+.Nd "set/query 802.11 wireless debugging messages"
+.Sh SYNOPSIS
+.Nm
+.Op Fl d | Fl i Ar ifnet
+.Op Fl flag|+flag Ar ...
+.Sh DESCRIPTION
+The
+.Nm
+command is a tool for enabling and disabling
+debugging messages in the
+.Xr wlan 4
+module.
+Running
+.Nm
+without any options will display the current messages
+enabled for the specified network interface
+(by default, ``wlan0').
+The default debugging level for new interfaces can be set
+by specifying the
+.Fl d
+option.
+When run as the super-user
+.Nm
+can be used to enable and/or disable debugging messages.
+.Pp
+To enable debugging messages of a certain
+.Ar type
+use
+.Ar +type ;
+to disable such messages use
+.Ar -type .
+Multiple messages can be enabled and disabled with a single command.
+.Pp
+Messages are organized in the following groups:
+.Bl -tag -width ".Ar dumppkts"
+.It Ar debug
+general debugging facilities; equivalent to setting the debug
+parameter with
+.Xr ifconfig 8 .
+.It Ar dumppkts
+dump packet contents on transmit and receive.
+.It Ar crypto
+crypto-related work.
+.It Ar input
+errors encountered during input handling.
+.It Ar xrate
+extended rate set handling (for 802.11g).
+.It Ar elemid
+information element processing in 802.11 management frames.
+.It Ar node
+management of per-station state.
+.It Ar assoc
+802.11 station association processing; particularly useful to
+see when stations join and leave a BSS.
+.It Ar auth
+802.11 station authentication processing.
+.It Ar scan
+scanning operation; especially useful for debugging problems
+with not locating an access point.
+.It Ar output
+errors encountered during output handling.
+.It Ar state
+.Xr wlan 4
+state machine operation.
+.It Ar power
+802.11 power save operation; in hostap mode this enables
+copious information about buffered frames for stations operating
+in power save mode.
+.It Ar hwmp
+trace operation of Hybrid Wireless Mesh Protocol processing.
+.It Ar dot1xsm
+802.1x state machine operation; not presently meaningful as 802.1x protocol
+support is implemented in user mode by the
+.Xr hostapd 8
+program.
+.It Ar radius
+radius backend operation as it relates to 802.1x operation;
+not presently meaningful as 802.1x protocol
+support is implemented in user mode by the
+.Xr hostapd 8
+program.
+.It Ar raddump
+dump packets exchanged with the radius backend for 802.1x operation;
+not presently meaningful as 802.1x protocol
+support is implemented in user mode by the
+.Xr hostapd 8
+program.
+.It Ar mesh
+trace operation of 802.11s mesh protocol processing.
+.It Ar wpa
+trace operation of the WPA protocol;
+only partly meaningful as WPA protocol
+support is mostly implemented in user mode by the
+.Xr hostapd 8
+and
+.Xr wpa_supplicant 8
+programs.
+.It Ar acl
+trace operation of the Access Control List (ACL) support; see
+.Xr wlan_acl 4
+for more details.
+.It Ar wme
+trace operation of WME/WMM protocol processing.
+.It Ar superg
+trace operation of Atheros SuperG protocol processing.
+.It Ar doth
+trace operation of IEEE 802.11h protocol processing.
+.It Ar inact
+trace station inactivity processing; in particular,
+show when stations associated to an access point are dropped due to
+inactivity.
+.It Ar roam
+trace station mode roaming between access points.
+.It Ar rate
+trace transmit rate control operation.
+.El
+.Sh EXAMPLES
+The following might be used to debug basic station mode operation:
+.Pp
+.Dl "wlandebug -i wlan1 scan+auth+assoc"
+.Pp
+it enables debug messages while scanning, authenticating to
+an access point, and associating to an access point.
+.Sh SEE ALSO
+.Xr athdebug 8 ,
+.Xr athstats 8 ,
+.Xr ifconfig 8 ,
+.Xr wlanstats 8
+.Sh NOTES
+Different wireless drivers support different debugging messages.
+Drivers such as
+.Xr ath 4
+and
+.Xr ral 4
+that depend on the
+.Xr wlan 4
+module for 802.11 protocol processing typically support
+most of the debugging messages while devices that
+implement parts of the 802.11 protocol in firmware do not.
+.Pp
+Some debugging messages are no longer meaningful
+because protocol processing has moved from the operating
+system to user mode programs such as
+.Xr hostapd 8
+and
+.Xr wpa_supplicant 8 .