bcm63xx: Add support for 2.6.38
[openwrt.git] / package / mac80211 / files / lib / wifi / mac80211.sh
index 5d4fcee..2ca63bb 100644 (file)
 #!/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() {
+       local device="$1"
+
+       local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')"
+       config_get phy "$device" phy
+       [ -z "$phy" -a -n "$macaddr" ] && {
+               for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
+                       [ "$macaddr" = "$(cat /sys/class/ieee80211/${phy}/macaddress)" ] || continue
+                       config_set "$device" phy "$phy"
+                       break
+               done
+               config_get phy "$device" phy
+       }
+       [ -n "$phy" -a -d "/sys/class/ieee80211/$phy" ] || {
+               echo "PHY for wifi device $1 not found"
+               return 1
+       }
+       [ -z "$macaddr" ] && {
+               config_set "$device" macaddr "$(cat /sys/class/ieee80211/${phy}/macaddress)"
+       }
+       return 0
+}
+
 scan_mac80211() {
        local device="$1"
        local adhoc sta ap monitor mesh
 
        config_get vifs "$device" vifs
        for vif in $vifs; do
-
-               config_get ifname "$vif" ifname
-               config_set "$vif" ifname "${ifname:-$device}"
-
                config_get mode "$vif" mode
                case "$mode" in
                        adhoc|sta|ap|monitor|mesh)
@@ -23,186 +213,341 @@ scan_mac80211() {
        config_set "$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"
 
+       find_mac80211_phy "$device" || return 0
+       config_get phy "$device" phy
+
        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
-       cd /proc/sys/net
-       for dev in *; do
-               grep "$device" "$dev/%parent" >/dev/null 2>/dev/null && {
-                       ifconfig "$dev" down
-                       unbridge "$dev"
-               }
+       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
        done
+
        return 0
 )
-
+get_freq() {
+       local phy="$1"
+       local chan="$2"
+       iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
+}
 enable_mac80211() {
        local device="$1"
        config_get channel "$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}")"
 
-       local first=1
-       local mesh_idx=0
        wifi_fixup_hwmode "$device" "g"
        for vif in $vifs; do
-               ifconfig "$ifname" down 2>/dev/null
-               config_get ifname "$vif" ifname
-               config_get enc "$vif" encryption
-               config_get eap_type "$vif" eap_type
-               config_get mode "$vif" mode
+               while [ -d "/sys/class/net/wlan$i" ]; do
+                       i=$(($i + 1))
+               done
 
                config_get ifname "$vif" ifname
-               [ $? -ne 0 ] && {
-                       echo "enable_mac80211($device): Failed to set up $mode vif $ifname" >&2
-                       continue
+               [ -n "$ifname" ] || {
+                       ifname="wlan$i"
                }
                config_set "$vif" ifname "$ifname"
 
-               [ "$first" = 1 ] && {
-                       # only need to change freq band and channel on the first vif
-                       iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
-                       if [ "$mode" = adhoc ]; then
-                               iwlist "$ifname" scan >/dev/null 2>/dev/null
-                               sleep 1
-                               iwconfig "$ifname" mode ad-hoc >/dev/null 2>/dev/null
-                       fi
-                       # mesh interface should be created only for the first interface
-                       if [ "$mode" = mesh ]; then
-                               config_get mesh_id "$vif" mesh_id
-                               if [ -n "$mesh_id" ]; then
-                                       iw dev "$ifname" interface add msh$mesh_idx type mp mesh_id $mesh_id
-                               fi
-                       fi
-                       sleep 1
-                       iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
-               }
-               if [ "$mode" = sta ]; then
-                       iwconfig "$ifname" mode managed >/dev/null 2>/dev/null
-               else
-                       iwconfig "$ifname" mode $mode >/dev/null 2>/dev/null
-               fi
-
-               wpa=
-               case "$enc" in
-                       WEP|wep)
-                               for idx in 1 2 3 4; do
-                                       config_get key "$vif" "key${idx}"
-                                       iwconfig "$ifname" enc "[$idx]" "${key:-off}"
-                               done
-                               config_get key "$vif" key
-                               key="${key:-1}"
-                               case "$key" in
-                                       [1234]) iwconfig "$ifname" enc "[$key]";;
-                                       *) iwconfig "$ifname" enc "$key";;
-                               esac
-                       ;;
-                       PSK|psk|PSK2|psk2)
-                               config_get key "$vif" key
-                       ;;
-               esac
+               config_get mode "$vif" mode
+               config_get ssid "$vif" ssid
 
+               # It is far easier to delete and create the desired interface
                case "$mode" in
                        adhoc)
-                               config_get addr "$vif" bssid
-                               [ -z "$addr" ] || {
-                                       iwconfig "$ifname" ap "$addr"
-                               }
+                               iw phy "$phy" interface add "$ifname" type adhoc
+                       ;;
+                       ap)
+                               # Hostapd will handle recreating the interface and
+                               # it's accompanying monitor
+                               apidx="$(($apidx + 1))"
+                               i=$(($i + 1))
+                               [ "$apidx" -gt 1 ] || iw phy "$phy" interface add "$ifname" type managed
+                       ;;
+                       mesh)
+                               config_get mesh_id "$vif" mesh_id
+                               iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
+                       ;;
+                       monitor)
+                               iw phy "$phy" interface add "$ifname" type monitor
+                       ;;
+                       sta)
+                               local wdsflag
+                               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
+                               [ "$powersave" -gt 0 ] && powersave="on" || powersave="off"
+                               iwconfig "$ifname" power "$powersave"
                        ;;
                esac
-               config_get ssid "$vif" ssid
+
+               # All interfaces must have unique mac addresses
+               # which can either be explicitly set in the device
+               # section, or automatically generated
+               config_get macaddr "$device" macaddr
+               local mac_1="${macaddr%%:*}"
+               local mac_2="${macaddr#*:}"
+
+               config_get vif_mac "$vif" macaddr
+               [ -n "$vif_mac" ] || {
+                       if [ "$macidx" -gt 0 ]; then
+                               offset="$(( 2 + $macidx * 4 ))"
+                       else
+                               offset="0"
+                       fi
+                       vif_mac="$( printf %02x $((0x$mac_1 + $offset)) ):$mac_2"
+                       macidx="$(($macidx + 1))"
+               }
+               [ "$mode" = "ap" ] || ifconfig "$ifname" hw ether "$vif_mac"
+               config_set "$vif" macaddr "$vif_mac"
+
+               # !! ap !!
+               #
+               # ALL ap functionality will be passed to hostapd
+               #
+               # !! station !!
+               #
+               # ALL station functionality will be passed to wpa_supplicant
+               #
+               if [ ! "$mode" = "ap" ]; then
+                       # 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
 
                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
-                       iwconfig "$ifname" frag "${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
-                       iwconfig "$ifname" rts "${rts%%.*}"
-               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 "$ifname" up
-               iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
-
-               local net_cfg bridge
-               net_cfg="$(find_net_config "$vif")"
-               [ -z "$net_cfg" ] || {
-                       bridge="$(bridge_interface "$net_cfg")"
-                       config_set "$vif" bridge "$bridge"
-                       start_net "$ifname" "$net_cfg"
-               }
-               iwconfig "$ifname" essid "$ssid"
-               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
+
+               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 "$key")" ;;
+                                               esac
                                        }
-                               fi
-                       ;;
-                       sta)
-                               if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
-                                       wpa_supplicant_setup_vif "$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
+
+                                       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
-                       ;;
-                       mesh)
-                               # special case where physical interface should be down for mesh to work
-                               ifconfig "$ifname" down
-                               ifconfig "msh$mesh_idx" up
-                               iwlist msh$mesh_idx scan 2>/dev/null >/dev/null
-                       ;;
-               esac
-               first=0
-               mesh_idx=$(expr $mesh_idx + 1)
+
+                                       local mcval=""
+                                       [ -n "$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_mac80211_device() {
+       config_get phy "$1" phy
+       [ -z "$phy" ] && {
+               find_mac80211_phy "$1" >/dev/null || return 0
+               config_get phy "$1" phy
+       }
+       [ "$phy" = "$dev" ] && found=1
+}
+
 detect_mac80211() {
-       cd /sys/class/net
-       for dev in $(ls -d wlan* 2>&-); do
-               config_get type "$dev" type
-               [ "$type" = mac80211 ] && return
+       devidx=0
+       config_load wireless
+       while :; do
+               config_get type "radio$devidx" type
+               [ -n "$type" ] || break
+               devidx=$(($devidx + 1))
+       done
+       for dev in $(ls /sys/class/ieee80211); do
+               found=0
+               config_foreach check_mac80211_device wifi-device
+               [ "$found" -gt 0 ] && continue
+
+               mode_11n=""
+               mode_band="g"
+               channel="11"
+               ht_cap=0
+               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" "$N"
+                       [ "$(($ht_cap & 16))" -eq 16 ] && append ht_capab "$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"; }
+
                cat <<EOF
-config wifi-device  $dev
+config wifi-device  radio$devidx
        option type     mac80211
-       option channel  5
-
+       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
 
 config wifi-iface
-       option device   $dev
-       option network  lan
-       option mode     ap
-       option ssid     OpenWrt
+       option device   radio$devidx
+       option network  lan
+       option mode     ap
+       option ssid     OpenWrt
        option encryption none
+
 EOF
+       devidx=$(($devidx + 1))
        done
 }
+
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