Add support for setting the debug flags on wlan interfaces after the are

created using wlandebug_<ifn> variables.

etc/defaults/rc.conf

@@ -197,6 +197,7 @@ ifconfig_lo0="inet 127.0.0.1"	# default loopback device configuration.
 #ifconfig_ed0_ipx="ipx 0x00010010"	# Sample IPX address family entry.
 #ifconfig_fxp0_name="net0"	# Change interface name from fxp0 to net0.
 #wlans_ath0="wlan0"		# wlan(4) interfaces for ath0 device
+#wlandebug_wlan0="scan+auth+assoc"	# Set debug flags with wlanddebug(8)
 #ipv4_addrs_fxp0="192.168.0.1/24 192.168.1.1-5/28" # example IPv4 address entry.
 #
 #autobridge_interfaces="bridge0"	# List of bridges to check 

etc/network.subr

@@ -499,7 +499,7 @@ clone_down()
 #
 childif_create()
 {
-	local cfg child child_wlans create_args ifn i
+	local cfg child child_wlans create_args debug_flags ifn i
 	cfg=1
 
 	ifn=$1
@@ -509,10 +509,18 @@ childif_create()
 
 	for child in ${child_wlans}; do
 		create_args="wlandev $ifn `get_if_var $child create_args_IF`"
+		debug_flags="`get_if_var $child wlandebug_IF`"
+
 		if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then
 			ifconfig $child create ${create_args} && cfg=0
+			if [ -n "${debug_flags}" ]; then
+				wlandebug -i $child ${debug_flags}
+			fi
 		else
 			i=`ifconfig wlan create ${create_args}`
+			if [ -n "${debug_flags}" ]; then
+				wlandebug -i $i ${debug_flags}
+			fi
 			ifconfig $i name $child && cfg=0
 		fi
 		if autoif $child; then

share/man/man5/rc.conf.5

@@ -1169,6 +1169,15 @@ One or more
 .Xr wlan 4
 devices must be created for each wireless devices as of
 .Fx 8.0 .
+Debugging flags for
+.Xr wlan 4
+devices as set by
+.Xr wlandebug 8
+may be specified with an
+.Va wlandebug_ Ns Aq Ar interface
+variable.
+The contents of this variable will be passed directly to
+.Xr wlandebug 8 .
 .Pp
 If the
 .Va ifconfig_ Ns Aq Ar interface
@@ -4065,6 +4074,7 @@ Default
 .Xr sysctl 8 ,
 .Xr syslogd 8 ,
 .Xr timed 8 ,
+.Xr wlandebug 8 ,
 .Xr yp 8 ,
 .Xr ypbind 8 ,
 .Xr ypserv 8 ,