package/mac80211/files/lib/wifi/mac80211.sh

   1 #!/bin/sh
   2 append DRIVERS "mac80211"
   3
   4 scan_mac80211() {
   5         local device="$1"
   6         local adhoc sta ap
   7
   8         config_get vifs "$device" vifs
   9         for vif in $vifs; do
  10
  11                 config_get ifname "$vif" ifname
  12                 config_set "$vif" ifname "${ifname:-$device}"
  13
  14                 config_get mode "$vif" mode
  15                 case "$mode" in
  16                         adhoc|sta|ap|monitor)
  17                                 append $mode "$vif"
  18                         ;;
  19                         *) echo "$device($vif): Invalid mode, ignored."; continue;;
  20                 esac
  21         done
  22
  23         config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${ahdemo:+$ahdemo }${sta:+$sta }${wds:+$wds }${monitor:+$monitor}"
  24 }
  25
  26
  27 disable_mac80211() (
  28         local device="$1"
  29
  30         set_wifi_down "$device"
  31         # kill all running hostapd and wpa_supplicant processes that
  32         # are running on atheros/mac80211 vifs
  33         for pid in `pidof hostapd wpa_supplicant`; do
  34                 grep wlan /proc/$pid/cmdline >/dev/null && \
  35                         kill $pid
  36         done
  37
  38         include /lib/network
  39         cd /proc/sys/net
  40         for dev in *; do
  41                 grep "$device" "$dev/%parent" >/dev/null 2>/dev/null && {
  42                         ifconfig "$dev" down
  43                         unbridge "$dev"
  44                 }
  45         done
  46         return 0
  47 )
  48
  49 enable_mac80211() {
  50         local device="$1"
  51         config_get channel "$device" channel
  52         config_get vifs "$device" vifs
  53
  54         local first=1
  55         for vif in $vifs; do
  56                 ifconfig "$ifname" down 2>/dev/null
  57                 config_get ifname "$vif" ifname
  58                 config_get enc "$vif" encryption
  59                 config_get eap_type "$vif" eap_type
  60                 config_get mode "$vif" mode
  61
  62                 config_get ifname "$vif" ifname
  63                 [ $? -ne 0 ] && {
  64                         echo "enable_mac80211($device): Failed to set up $mode vif $ifname" >&2
  65                         continue
  66                 }
  67                 config_set "$vif" ifname "$ifname"
  68
  69                 [ "$first" = 1 ] && {
  70                         # only need to change freq band and channel on the first vif
  71                         iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
  72                         if [ "$mode" = adhoc ]; then
  73                                 iwlist "$ifname" scan >/dev/null 2>/dev/null
  74                                 sleep 1
  75                                 iwconfig "$ifname" mode ad-hoc >/dev/null 2>/dev/null
  76                         fi
  77                         sleep 1
  78                         iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
  79                 }
  80                 if [ "$mode" = sta ]; then
  81                         iwconfig "$ifname" mode managed >/dev/null 2>/dev/null
  82                 else
  83                         iwconfig "$ifname" mode $mode >/dev/null 2>/dev/null
  84                 fi
  85
  86                 wpa=
  87                 case "$enc" in
  88                         WEP|wep)
  89                                 for idx in 1 2 3 4; do
  90                                         config_get key "$vif" "key${idx}"
  91                                         iwconfig "$ifname" enc "[$idx]" "${key:-off}"
  92                                 done
  93                                 config_get key "$vif" key
  94                                 key="${key:-1}"
  95                                 case "$key" in
  96                                         [1234]) iwconfig "$ifname" enc "[$key]";;
  97                                         *) iwconfig "$ifname" enc "$key";;
  98                                 esac
  99                         ;;
 100                         PSK|psk|PSK2|psk2)
 101                                 config_get key "$vif" key
 102                         ;;
 103                 esac
 104
 105                 case "$mode" in
 106                         adhoc)
 107                                 config_get addr "$vif" bssid
 108                                 [ -z "$addr" ] || {
 109                                         iwconfig "$ifname" ap "$addr"
 110                                 }
 111                         ;;
 112                 esac
 113                 config_get ssid "$vif" ssid
 114
 115                 config_get txpwr "$vif" txpower
 116                 if [ -n "$txpwr" ]; then
 117                         iwconfig "$ifname" txpower "${txpwr%%.*}"
 118                 fi
 119
 120                 config_get frag "$vif" frag
 121                 if [ -n "$frag" ]; then
 122                         iwconfig "$ifname" frag "${frag%%.*}"
 123                 fi
 124
 125                 config_get rts "$vif" rts
 126                 if [ -n "$rts" ]; then
 127                         iwconfig "$ifname" rts "${rts%%.*}"
 128                 fi
 129
 130                 ifconfig "$ifname" up
 131                 iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
 132
 133                 local net_cfg bridge
 134                 net_cfg="$(find_net_config "$vif")"
 135                 [ -z "$net_cfg" ] || {
 136                         bridge="$(bridge_interface "$net_cfg")"
 137                         config_set "$vif" bridge "$bridge"
 138                         start_net "$ifname" "$net_cfg"
 139                 }
 140                 iwconfig "$ifname" essid "$ssid"
 141                 set_wifi_up "$vif" "$ifname"
 142                 case "$mode" in
 143                         ap)
 144                                 if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
 145                                         hostapd_setup_vif "$vif" nl80211 || {
 146                                                 echo "enable_mac80211($device): Failed to set up wpa for interface $ifname" >&2
 147                                                 # make sure this wifi interface won't accidentally stay open without encryption
 148                                                 ifconfig "$ifname" down
 149                                                 continue
 150                                         }
 151                                 fi
 152                         ;;
 153                         sta)
 154                                 if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
 155                                         wpa_supplicant_setup_vif "$vif" wext || {
 156                                                 echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
 157                                                 # make sure this wifi interface won't accidentally stay open without encryption
 158                                                 ifconfig "$ifname" down
 159                                                 continue
 160                                         }
 161                                 fi
 162                         ;;
 163                 esac
 164                 first=0
 165         done
 166 }
 167
 168
 169 detect_mac80211() {
 170         cd /sys/class/net
 171         for dev in $(ls -d wlan* 2>&-); do
 172                 config_get type "$dev" type
 173                 [ "$type" = mac80211 ] && return
 174                 cat <<EOF
 175 config wifi-device  $dev
 176         option type     mac80211
 177         option channel  5
 178
 179         # REMOVE THIS LINE TO ENABLE WIFI:
 180         option disabled 1
 181
 182 config wifi-iface
 183         option device   $dev
 184         option network  lan
 185         option mode     ap
 186         option ssid     OpenWrt
 187         option encryption none
 188 EOF
 189         done
 190 }