X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/8a11ffce727cd0a8a0578a5c3359c21c04539a06..5e10b16d95550d4656d8b594f3cbb6a3892db688:/package/mac80211/files/lib/wifi/mac80211.sh?ds=inline

diff --git a/package/mac80211/files/lib/wifi/mac80211.sh b/package/mac80211/files/lib/wifi/mac80211.sh
index b7984a3b7..2ca63bb5c 100644
--- a/package/mac80211/files/lib/wifi/mac80211.sh
+++ b/package/mac80211/files/lib/wifi/mac80211.sh
@@ -1,8 +1,179 @@
 #!/bin/sh
 append DRIVERS "mac80211"
 
+mac80211_hostapd_setup_base() {
+	local phy="$1"
+	local ifname="$2"
+
+	cfgfile="/var/run/hostapd-$phy.conf"
+	macfile="/var/run/hostapd-$phy.maclist"
+	[ -e "$macfile" ] && rm -f "$macfile"
+
+	config_get device "$vif" device
+	config_get country "$device" country
+	config_get hwmode "$device" hwmode
+	config_get channel "$device" channel
+	config_get beacon_int "$device" beacon_int
+	config_get basic_rate_list "$device" basic_rate
+	config_get_bool noscan "$device" noscan
+	[ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
+	[ "$channel" = auto ] && channel=
+	[ -n "$hwmode" ] && {
+		config_get hwmode_11n "$device" hwmode_11n
+		[ -n "$hwmode_11n" ] && {
+			hwmode="$hwmode_11n"
+			append base_cfg "ieee80211n=1" "$N"
+			config_get htmode "$device" htmode
+			config_get ht_capab_list "$device" ht_capab
+			case "$htmode" in
+				HT20|HT40+|HT40-) ht_capab="[$htmode]";;
+				*)ht_capab=;;
+			esac
+			for cap in $ht_capab_list; do
+				ht_capab="$ht_capab[$cap]"
+			done
+			[ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N"
+		}
+	}
+
+	local country_ie=0
+	[ -n "$country" ] && country_ie=1
+	config_get_bool country_ie "$device" country_ie "$country_ie"
+	[ "$country_ie" -gt 0 ] && append base_cfg "ieee80211d=1" "$N"
+
+	config_get macfilter "$vif" macfilter
+	case "$macfilter" in
+		allow)
+			append base_cfg "macaddr_acl=1" "$N"
+			append base_cfg "accept_mac_file=$macfile" "$N"
+			;;
+		deny)
+			append base_cfg "macaddr_acl=0" "$N"
+			append base_cfg "deny_mac_file=$macfile" "$N"
+			;;
+	esac
+	config_get maclist "$vif" maclist
+	[ -n "$maclist" ] && {
+		for mac in $maclist; do
+			echo "$mac" >> $macfile
+		done
+	}
+
+	local br brval brstr
+	[ -n "$basic_rate_list" ] && {
+		for br in $basic_rate_list; do
+			brval="$(($br / 100))"
+			[ -n "$brstr" ] && brstr="$brstr "
+			brstr="$brstr$brval"
+		done
+	}
+	
+	cat >> "$cfgfile" <<EOF
+ctrl_interface=/var/run/hostapd-$phy
+driver=nl80211
+wmm_ac_bk_cwmin=4
+wmm_ac_bk_cwmax=10
+wmm_ac_bk_aifs=7
+wmm_ac_bk_txop_limit=0
+wmm_ac_bk_acm=0
+wmm_ac_be_aifs=3
+wmm_ac_be_cwmin=4
+wmm_ac_be_cwmax=10
+wmm_ac_be_txop_limit=0
+wmm_ac_be_acm=0
+wmm_ac_vi_aifs=2
+wmm_ac_vi_cwmin=3
+wmm_ac_vi_cwmax=4
+wmm_ac_vi_txop_limit=94
+wmm_ac_vi_acm=0
+wmm_ac_vo_aifs=2
+wmm_ac_vo_cwmin=2
+wmm_ac_vo_cwmax=3
+wmm_ac_vo_txop_limit=47
+wmm_ac_vo_acm=0
+tx_queue_data3_aifs=7
+tx_queue_data3_cwmin=15
+tx_queue_data3_cwmax=1023
+tx_queue_data3_burst=0
+tx_queue_data2_aifs=3
+tx_queue_data2_cwmin=15
+tx_queue_data2_cwmax=63
+tx_queue_data2_burst=0
+tx_queue_data1_aifs=1
+tx_queue_data1_cwmin=7
+tx_queue_data1_cwmax=15
+tx_queue_data1_burst=3.0
+tx_queue_data0_aifs=1
+tx_queue_data0_cwmin=3
+tx_queue_data0_cwmax=7
+tx_queue_data0_burst=1.5
+${hwmode:+hw_mode=$hwmode}
+${channel:+channel=$channel}
+${beacon_int:+beacon_int=$beacon_int}
+${country:+country_code=$country}
+${noscan:+noscan=$noscan}
+${brstr:+basic_rates=$brstr}
+$base_cfg
+
+EOF
+}
+
+mac80211_hostapd_setup_bss() {
+	local phy="$1"
+	local vif="$2"
+
+	hostapd_cfg=
+	cfgfile="/var/run/hostapd-$phy.conf"
+	config_get ifname "$vif" ifname
+
+	if [ -f "$cfgfile" ]; then
+		append hostapd_cfg "bss=$ifname" "$N"
+	else
+		mac80211_hostapd_setup_base "$phy" "$ifname"
+		append hostapd_cfg "interface=$ifname" "$N"
+	fi
+
+	local net_cfg bridge
+	net_cfg="$(find_net_config "$vif")"
+	[ -z "$net_cfg" ] || bridge="$(bridge_interface "$net_cfg")"
+	config_set "$vif" bridge "$bridge"
+
+	hostapd_set_bss_options hostapd_cfg "$vif"
+
+	config_get_bool wds "$vif" wds 0
+	[ "$wds" -gt 0 ] && append hostapd_cfg "wds_sta=1" "$N"
+
+	local macaddr hidden maxassoc wmm
+	config_get macaddr "$vif" macaddr
+	config_get maxassoc "$vif" maxassoc
+	config_get dtim_period "$vif" dtim_period
+	config_get max_listen_int "$vif" max_listen_int
+	config_get_bool hidden "$vif" hidden 0
+	config_get_bool wmm "$vif" wmm 1
+	cat >> /var/run/hostapd-$phy.conf <<EOF
+$hostapd_cfg
+wmm_enabled=$wmm
+bssid=$macaddr
+ignore_broadcast_ssid=$hidden
+${dtim_period:+dtim_period=$dtim_period}
+${max_listen_int:+max_listen_interval=$max_listen_int}
+${maxassoc:+max_num_sta=$maxassoc}
+EOF
+}
+
+mac80211_start_vif() {
+	local vif="$1"
+	local ifname="$2"
+
+	local net_cfg
+	net_cfg="$(find_net_config "$vif")"
+	[ -z "$net_cfg" ] || start_net "$ifname" "$net_cfg"
+
+	set_wifi_up "$vif" "$ifname"
+}
+
 find_mac80211_phy() {
-	config_get device "$1"
+	local device="$1"
 
 	local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')"
 	config_get phy "$device" phy
@@ -42,6 +213,14 @@ scan_mac80211() {
 	config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${monitor:+$monitor }${mesh:+$mesh}"
 }
 
+list_phy_interfaces() {
+	local phy="$1"
+	if [ -d "/sys/class/ieee80211/${phy}/device/net" ]; then
+		ls "/sys/class/ieee80211/${phy}/device/net" 2>/dev/null;
+	else
+		ls "/sys/class/ieee80211/${phy}/device" 2>/dev/null | grep net: | sed -e 's,net:,,g'
+	fi
+}
 
 disable_mac80211() (
 	local device="$1"
@@ -52,13 +231,18 @@ disable_mac80211() (
 	set_wifi_down "$device"
 	# kill all running hostapd and wpa_supplicant processes that
 	# are running on atheros/mac80211 vifs
-	for pid in `pidof hostapd wpa_supplicant`; do
-		grep wlan /proc/$pid/cmdline >/dev/null && \
+	for pid in `pidof hostapd`; do
+		grep -E "$phy" /proc/$pid/cmdline >/dev/null && \
 			kill $pid
 	done
 
 	include /lib/network
-	for wdev in $(ls /sys/class/ieee80211/${phy}/device/net 2>/dev/null); do
+	for wdev in $(list_phy_interfaces "$phy"); do
+		[ -f "/var/run/$wdev.pid" ] && kill $(cat /var/run/$wdev.pid) >&/dev/null 2>&1
+		for pid in `pidof wpa_supplicant`; do
+			grep "$wdev" /proc/$pid/cmdline >/dev/null && \
+				kill $pid
+		done
 		ifconfig "$wdev" down 2>/dev/null
 		unbridge "$dev"
 		iw dev "$wdev" del
@@ -76,15 +260,31 @@ enable_mac80211() {
 	config_get channel "$device" channel
 	config_get vifs "$device" vifs
 	config_get txpower "$device" txpower
+	config_get country "$device" country
+	config_get distance "$device" distance
+	config_get txantenna "$device" txantenna all
+	config_get rxantenna "$device" rxantenna all
+	config_get frag "$device" frag
+	config_get rts "$device" rts
 	find_mac80211_phy "$device" || return 0
 	config_get phy "$device" phy
 	local i=0
+	local macidx=0
+	local apidx=0
 	fixed=""
+	local hostapd_ctrl=""
 
+	[ -n "$country" ] && iw reg set "$country"
 	[ "$channel" = "auto" -o "$channel" = "0" ] || {
 		fixed=1
 	}
 
+	iw phy "$phy" set antenna $txantenna $rxantenna >/dev/null 2>&1
+
+	[ -n "$distance" ] && iw phy "$phy" set distance "$distance"
+	[ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
+	[ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
+
 	export channel fixed
 	# convert channel to frequency
 	local freq="$(get_freq "$phy" "${fixed:+$channel}")"
@@ -101,10 +301,8 @@ enable_mac80211() {
 		}
 		config_set "$vif" ifname "$ifname"
 
-		config_get enc "$vif" encryption
 		config_get mode "$vif" mode
 		config_get ssid "$vif" ssid
-		config_get_bool wds "$vif" wds 0
 
 		# It is far easier to delete and create the desired interface
 		case "$mode" in
@@ -114,7 +312,9 @@ enable_mac80211() {
 			ap)
 				# Hostapd will handle recreating the interface and
 				# it's accompanying monitor
-				iw phy "$phy" interface add "$ifname" type managed
+				apidx="$(($apidx + 1))"
+				i=$(($i + 1))
+				[ "$apidx" -gt 1 ] || iw phy "$phy" interface add "$ifname" type managed
 			;;
 			mesh)
 				config_get mesh_id "$vif" mesh_id
@@ -125,7 +325,8 @@ enable_mac80211() {
 			;;
 			sta)
 				local wdsflag
-				[ "$wds" -gt 0 ] && wdsflag="wds on"
+				config_get_bool wds "$vif" wds 0
+				[ "$wds" -gt 0 ] && wdsflag="4addr on"
 				iw phy "$phy" interface add "$ifname" type managed $wdsflag
 				config_get_bool powersave "$vif" powersave 0
 				[ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
@@ -134,7 +335,7 @@ enable_mac80211() {
 		esac
 
 		# All interfaces must have unique mac addresses
-		# which can either be explicitly set in the device 
+		# which can either be explicitly set in the device
 		# section, or automatically generated
 		config_get macaddr "$device" macaddr
 		local mac_1="${macaddr%%:*}"
@@ -142,144 +343,149 @@ enable_mac80211() {
 
 		config_get vif_mac "$vif" macaddr
 		[ -n "$vif_mac" ] || {
-			if [ "$i" -gt 0 ]; then 
-				offset="$(( 2 + $i * 4 ))"
+			if [ "$macidx" -gt 0 ]; then
+				offset="$(( 2 + $macidx * 4 ))"
 			else
 				offset="0"
 			fi
-			vif_mac="$( printf %02x $(($mac_1 + $offset)) ):$mac_2"
+			vif_mac="$( printf %02x $((0x$mac_1 + $offset)) ):$mac_2"
+			macidx="$(($macidx + 1))"
 		}
-		ifconfig "$ifname" hw ether "$vif_mac"
-
-		# We attempt to set teh channel for all interfaces, although
-		# mac80211 may not support it or the driver might not yet
-		[ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel"
+		[ "$mode" = "ap" ] || ifconfig "$ifname" hw ether "$vif_mac"
+		config_set "$vif" macaddr "$vif_mac"
 
-		local key keystring
-
-		# Valid values are:
-		# wpa / wep / none
-		#
 		# !! ap !!
 		#
 		# ALL ap functionality will be passed to hostapd
 		#
-		# !! mesh / adhoc / station !!
-		# none -> NO encryption
+		# !! station !!
 		#
-		# wep + keymgmt = '' -> we use iw to connect to the
-		# network.  
+		# ALL station functionality will be passed to wpa_supplicant
 		#
-		# wep + keymgmt = 'NONE' -> wpa_supplicant will be
-		# configured to handle the wep connection
 		if [ ! "$mode" = "ap" ]; then
-			case "$enc" in
-				wep)
-					config_get keymgmt "$vif" keymgmt
-					if [ -e "$keymgmt" ]; then
-						for idx in 1 2 3 4; do
-							local zidx
-							zidx = idx - 1
-							config_get key "$vif" "key${idx}"
-							if [ -n "$key" ]; then
-								append keystring "${zidx}:${key} " 
-							fi
-						done
-					fi
-				;;
-				wpa)
-					config_get key "$vif" key
-				;;
-			esac
+			# We attempt to set the channel for all interfaces, although
+			# mac80211 may not support it or the driver might not yet
+			# for ap mode this is handled by hostapd
+			[ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel"
 		fi
 
-		# txpower is not yet implemented in iw
 		config_get vif_txpower "$vif" txpower
 		# use vif_txpower (from wifi-iface) to override txpower (from
 		# wifi-device) if the latter doesn't exist
 		txpower="${txpower:-$vif_txpower}"
-		[ -z "$txpower" ] || iwconfig "$ifname" txpower "${txpower%%.*}"
+		[ -z "$txpower" ] || iw dev "$ifname" set txpower fixed "${txpower%%.*}00"
+	done
 
-		config_get frag "$vif" frag
-		if [ -n "$frag" ]; then
-			iw phy "$phy" set frag "${frag%%.*}"
-		fi
+	local start_hostapd=
+	rm -f /var/run/hostapd-$phy.conf
+	for vif in $vifs; do
+		config_get mode "$vif" mode
+		[ "$mode" = "ap" ] || continue
+		mac80211_hostapd_setup_bss "$phy" "$vif"
+		start_hostapd=1
+	done
 
-		config_get rts "$vif" rts
-		if [ -n "$rts" ]; then
-			iw phy "$phy" set rts "${frag%%.*}"
-		fi
+	[ -n "$start_hostapd" ] && {
+		hostapd -P /var/run/wifi-$phy.pid -B /var/run/hostapd-$phy.conf || {
+			echo "Failed to start hostapd for $phy"
+			return
+		}
+		sleep 2
+
+		for vif in $vifs; do
+			config_get mode "$vif" mode
+			config_get ifname "$vif" ifname
+			[ "$mode" = "ap" ] || continue
+			hostapd_ctrl="${hostapd_ctrl:-/var/run/hostapd-$phy/$ifname}"
+			mac80211_start_vif "$vif" "$ifname"
+		done
+	}
 
+	for vif in $vifs; do
+		config_get mode "$vif" mode
+		config_get ifname "$vif" ifname
+		[ ! "$mode" = "ap" ] || continue
 		ifconfig "$ifname" up
 
-		local net_cfg bridge
-		net_cfg="$(find_net_config "$vif")"
-		[ -z "$net_cfg" ] || {
-			bridge="$(bridge_interface "$net_cfg")"
-			config_set "$vif" bridge "$bridge"
-			start_net "$ifname" "$net_cfg"
-		}
+		if [ ! "$mode" = "ap" ]; then
+			ifconfig "$ifname" up
+			case "$mode" in
+				adhoc)
+					config_get bssid "$vif" bssid
+					config_get ssid "$vif" ssid
+					config_get beacon_int "$device" beacon_int
+					config_get basic_rate_list "$device" basic_rate
+					config_get encryption "$vif" encryption
+					config_get key "$vif" key 1
+					config_get mcast_rate "$vif" mcast_rate
+
+					local keyspec=""
+					[ "$encryption" == "wep" ] && {
+						case "$key" in
+							[1234])
+								local idx
+								for idx in 1 2 3 4; do
+									local ikey
+									config_get ikey "$vif" "key$idx"
+
+									[ -n "$ikey" ] && {
+										ikey="$(($idx - 1)):$(prepare_key_wep "$ikey")"
+										[ $idx -eq $key ] && ikey="d:$ikey"
+										append keyspec "$ikey"
+									}
+								done
+							;;
+							*) append keyspec "d:0:$(prepare_key_wep "$key")" ;;
+						esac
+					}
 
-		set_wifi_up "$vif" "$ifname"
-		case "$mode" in
-			ap)
-				if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
-					hostapd_setup_vif "$vif" nl80211 || {
-						echo "enable_mac80211($device): Failed to set up wpa for interface $ifname" >&2
-						# make sure this wifi interface won't accidentally stay open without encryption
-						ifconfig "$ifname" down
-						continue
+					local br brval brsub brstr
+					[ -n "$basic_rate_list" ] && {
+						for br in $basic_rate_list; do
+							brval="$(($br / 1000))"
+							brsub="$((($br / 100) % 10))"
+							[ "$brsub" -gt 0 ] && brval="$brval.$brsub"
+							[ -n "$brstr" ] && brstr="$brstr,"
+							brstr="$brstr$brval"
+						done
 					}
-				fi
-			;;
-			adhoc)
-				config_get bssid "$vif" bssid
-				iw dev "$ifname" ibss join "$ssid" $freq ${fixed:+fixed-freq} $bssid
-			;;
-			sta|mesh)
-				config_get bssid "$vif" bssid
-				case "$enc" in												 
-					wep)
-						if [ -e "$keymgmt" ]; then
-							[ -n "$keystring" ] &&
-								iw dev "$ifname" connect "$ssid" ${fixed:+$freq} $bssid key "$keystring"
-						else
-							if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
-								wpa_supplicant_setup_vif "$vif" wext || {
-									echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
-									# make sure this wifi interface won't accidentally stay open without encryption
-									ifconfig "$ifname" down
-									continue
-								}
-							fi
-						fi
-					;;
-					wpa*|psk*)
-						config_get key "$vif" key
-						if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
-							wpa_supplicant_setup_vif "$vif" wext || {
-								echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
-								# make sure this wifi interface won't accidentally stay open without encryption
-								ifconfig "$ifname" down
-								continue
-							}
-						fi
-					;;
-					*)
-						iw dev "$ifname" connect "$ssid" ${fixed:+$freq} $bssid
-					;;
-				esac
 
-			;;
-		esac
+					local mcval=""
+					[ -n "$mcast_rate" ] && {
+						mcval="$(($mcast_rate / 1000))"
+						mcsub="$(( ($mcast_rate / 100) % 10 ))"
+						[ "$mcsub" -gt 0 ] && mcval="$mcval.$mcsub"
+					}
+
+					iw dev "$ifname" ibss join "$ssid" $freq \
+						${fixed:+fixed-freq} $bssid \
+						${beacon_int:+beacon-interval $beacon_int} \
+						${brstr:+basic-rates $brstr} \
+						${mcval:+mcast-rate $mcval} \
+						${keyspec:+keys $keyspec}
+				;;
+				sta)
+					if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
+						wpa_supplicant_setup_vif "$vif" nl80211 "${hostapd_ctrl:+-H $hostapd_ctrl}" || {
+							echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
+							# make sure this wifi interface won't accidentally stay open without encryption
+							ifconfig "$ifname" down
+							continue
+						}
+					fi
+				;;
+			esac
+			mac80211_start_vif "$vif" "$ifname"
+		fi
 	done
+
 }
 
 
-check_device() {
+check_mac80211_device() {
 	config_get phy "$1" phy
 	[ -z "$phy" ] && {
-		find_mac80211_phy "$1" || return 0
+		find_mac80211_phy "$1" >/dev/null || return 0
 		config_get phy "$1" phy
 	}
 	[ "$phy" = "$dev" ] && found=1
@@ -288,53 +494,60 @@ check_device() {
 detect_mac80211() {
 	devidx=0
 	config_load wireless
+	while :; do
+		config_get type "radio$devidx" type
+		[ -n "$type" ] || break
+		devidx=$(($devidx + 1))
+	done
 	for dev in $(ls /sys/class/ieee80211); do
 		found=0
-		config_foreach check_device wifi-device
+		config_foreach check_mac80211_device wifi-device
 		[ "$found" -gt 0 ] && continue
 
-		while :; do 
-			config_get type "wifi$devidx" type
-			[ -n "$type" ] || break
-			devidx=$(($devidx + 1))
-		done
 		mode_11n=""
 		mode_band="g"
-		channel="5"
+		channel="11"
 		ht_cap=0
-		for cap in $(iw phy "$dev" info | grep 'HT capabilities' | cut -d: -f2); do
+		for cap in $(iw phy "$dev" info | grep 'Capabilities:' | cut -d: -f2); do
 			ht_cap="$(($ht_cap | $cap))"
 		done
 		ht_capab="";
 		[ "$ht_cap" -gt 0 ] && {
 			mode_11n="n"
+			append ht_capab "	option htmode	HT20" "$N"
+
 			list="	list ht_capab"
 			[ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list	LDPC" "$N"
-			[ "$(($ht_cap & 2))" -eq 2 ] && append ht_capab "$list	HT40-" "$N"
+			[ "$(($ht_cap & 16))" -eq 16 ] && append ht_capab "$list	GF" "$N"
 			[ "$(($ht_cap & 32))" -eq 32 ] && append ht_capab "$list	SHORT-GI-20" "$N"
 			[ "$(($ht_cap & 64))" -eq 64 ] && append ht_capab "$list	SHORT-GI-40" "$N"
+			[ "$(($ht_cap & 128))" -eq 128 ] && append ht_capab "$list	TX-STBC" "$N"
+			[ "$(($ht_cap & 768))" -eq 256 ] && append ht_capab "$list	RX-STBC1" "$N"
+			[ "$(($ht_cap & 768))" -eq 512 ] && append ht_capab "$list	RX-STBC12" "$N"
+			[ "$(($ht_cap & 768))" -eq 768 ] && append ht_capab "$list	RX-STBC123" "$N"
 			[ "$(($ht_cap & 4096))" -eq 4096 ] && append ht_capab "$list	DSSS_CCK-40" "$N"
 		}
-		iw phy "$dev" info | grep -q '2412 MHz' || mode_band="a"; channel="36"
+		iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
 
 		cat <<EOF
-config wifi-device  wifi$devidx
+config wifi-device  radio$devidx
 	option type     mac80211
 	option channel  ${channel}
 	option macaddr	$(cat /sys/class/ieee80211/${dev}/macaddress)
 	option hwmode	11${mode_11n}${mode_band}
+$ht_capab
 	# REMOVE THIS LINE TO ENABLE WIFI:
 	option disabled 1
-$ht_capab
 
 config wifi-iface
-	option device   wifi$devidx
+	option device   radio$devidx
 	option network  lan
 	option mode     ap
 	option ssid     OpenWrt
 	option encryption none
 
 EOF
+	devidx=$(($devidx + 1))
 	done
 }