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)
  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 }"
  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 $vifs; do
  56                 config_get ifname "$vif" ifname
  57                 config_get enc "$vif" encryption
  58                 config_get mode "$vif" mode
  59
  60                 config_get ifname "$vif" ifname
  61                 [ $? -ne 0 ] && {
  62                         echo "enable_mac80211($device): Failed to set up $mode vif $ifname" >&2
  63                         continue
  64                 }
  65                 config_set "$vif" ifname "$ifname"
  66
  67                 [ "$first" = 1 ] && {
  68                         # only need to change freq band and channel on the first vif
  69                         iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
  70                         if [ "$mode" = adhoc ]; then
  71                                 iwlist "$ifname" scan >/dev/null 2>/dev/null
  72                                 sleep 1
  73                                 iwconfig "$ifname" mode ad-hoc >/dev/null 2>/dev/null
  74                         fi
  75                         ifconfig "$ifname" up
  76                         sleep 1
  77                         iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
  78                 }
  79
  80                 wpa=
  81                 case "$enc" in
  82                         WEP|wep)
  83                                 for idx in 1 2 3 4; do
  84                                         config_get key "$vif" "key${idx}"
  85                                         iwconfig "$ifname" enc "[$idx]" "${key:-off}"
  86                                 done
  87                                 config_get key "$vif" key
  88                                 key="${key:-1}"
  89                                 case "$key" in
  90                                         [1234]) iwconfig "$ifname" enc "[$key]";;
  91                                         *) iwconfig "$ifname" enc "$key";;
  92                                 esac
  93                         ;;
  94                         PSK|psk|PSK2|psk2)
  95                                 config_get key "$vif" key
  96                         ;;
  97                 esac
  98
  99                 case "$mode" in
 100                         adhoc)
 101                                 config_get addr "$vif" bssid
 102                                 [ -z "$addr" ] || {
 103                                         iwconfig "$ifname" ap "$addr"
 104                                 }
 105                         ;;
 106                 esac
 107                 config_get ssid "$vif" ssid
 108
 109                 config_get txpwr "$vif" txpower
 110                 if [ -n "$txpwr" ]; then
 111                         iwconfig "$ifname" txpower "${txpwr%%.*}"
 112                 fi
 113
 114                 config_get frag "$vif" frag
 115                 if [ -n "$frag" ]; then
 116                         iwconfig "$ifname" frag "${frag%%.*}"
 117                 fi
 118
 119                 config_get rts "$vif" rts
 120                 if [ -n "$rts" ]; then
 121                         iwconfig "$ifname" rts "${rts%%.*}"
 122                 fi
 123
 124                 ifconfig "$ifname" up
 125                 iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
 126
 127                 local net_cfg bridge
 128                 net_cfg="$(find_net_config "$vif")"
 129                 [ -z "$net_cfg" ] || {
 130                         bridge="$(bridge_interface "$net_cfg")"
 131                         config_set "$vif" bridge "$bridge"
 132                         start_net "$ifname" "$net_cfg"
 133                 }
 134                 iwconfig "$ifname" essid "$ssid"
 135                 set_wifi_up "$vif" "$ifname"
 136                 case "$mode" in
 137                         ap)
 138                                 if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
 139                                         hostapd_setup_vif "$vif" nl80211 || {
 140                                                 echo "enable_mac80211($device): Failed to set up wpa for interface $ifname" >&2
 141                                                 # make sure this wifi interface won't accidentally stay open without encryption
 142                                                 ifconfig "$ifname" down
 143                                                 continue
 144                                         }
 145                                 fi
 146                         ;;
 147                         sta)
 148                                 case "$enc" in
 149                                         PSK|psk|PSK2|psk2)
 150                                                 case "$enc" in
 151                                                         PSK|psk)
 152                                                                 proto='proto=WPA';;
 153                                                         PSK2|psk2)
 154                                                                 proto='proto=RSN';;
 155                                                 esac
 156                                                 cat > /var/run/wpa_supplicant-$ifname.conf <<EOF
 157 ctrl_interface=/var/run/wpa_supplicant
 158 network={
 159         scan_ssid=1
 160         ssid="$ssid"
 161         key_mgmt=WPA-PSK
 162         $proto
 163         psk="$key"
 164 }
 165 EOF
 166                                         ;;
 167                                         WPA|wpa|WPA2|wpa2)
 168                                                 #add wpa_supplicant calls here
 169                                         ;;
 170                                 esac
 171                                 [ -z "$proto" ] || wpa_supplicant ${bridge:+ -b $bridge} -B -D wext -i "$ifname" -c /var/run/wpa_supplicant-$ifname.conf
 172                         ;;
 173                 esac
 174                 first=0
 175         done
 176 }
 177
 178
 179 detect_mac80211() {
 180         cd /sys/class/net
 181         for dev in $(ls -d wlan* 2>&-); do
 182                 config_get type "$dev" type
 183                 [ "$type" = mac80211 ] && return
 184                 cat <<EOF
 185 config wifi-device  $dev
 186         option type     mac80211
 187         option channel  5
 188
 189         # REMOVE THIS LINE TO ENABLE WIFI:
 190         option disabled 1
 191
 192 config wifi-iface
 193         option device   $dev
 194         option network  lan
 195         option mode     ap
 196         option ssid     OpenWrt
 197         option encryption none
 198 EOF
 199         done
 200 }