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

   1 #!/bin/sh
   2 append DRIVERS "mac80211"
   3
   4 scan_mac80211() {
   5         local device="$1"
   6         local adhoc sta ap monitor mesh
   7
   8         config_get vifs "$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|mesh)
  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:+$adhoc }${sta:+$sta }${monitor:+$monitor }${mesh:+$mesh}"
  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 "$device" vifs
  53         config_get txpower "$device" txpower
  54
  55         local first=1
  56         local mesh_idx=0
  57         wifi_fixup_hwmode "$device" "g"
  58         for vif in $vifs; do
  59                 ifconfig "$ifname" down 2>/dev/null
  60                 config_get ifname "$vif" ifname
  61                 config_get enc "$vif" encryption
  62                 config_get eap_type "$vif" eap_type
  63                 config_get mode "$vif" mode
  64
  65                 config_get ifname "$vif" ifname
  66                 [ $? -ne 0 ] && {
  67                         echo "enable_mac80211($device): Failed to set up $mode vif $ifname" >&2
  68                         continue
  69                 }
  70                 config_set "$vif" ifname "$ifname"
  71
  72                 [ "$first" = 1 ] && {
  73                         # only need to change freq band and channel on the first vif
  74                         iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
  75                         if [ "$mode" = adhoc ]; then
  76                                 iwlist "$ifname" scan >/dev/null 2>/dev/null
  77                                 sleep 1
  78                                 iwconfig "$ifname" mode ad-hoc >/dev/null 2>/dev/null
  79                         fi
  80                         # mesh interface should be created only for the first interface
  81                         if [ "$mode" = mesh ]; then
  82                                 config_get mesh_id "$vif" mesh_id
  83                                 if [ -n "$mesh_id" ]; then
  84                                         iw dev "$ifname" interface add msh$mesh_idx type mp mesh_id $mesh_id
  85                                 fi
  86                         fi
  87                         sleep 1
  88                         iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
  89                 }
  90                 if [ "$mode" = sta ]; then
  91                         iwconfig "$ifname" mode managed >/dev/null 2>/dev/null
  92                 else
  93                         iwconfig "$ifname" mode $mode >/dev/null 2>/dev/null
  94                 fi
  95
  96                 wpa=
  97                 case "$enc" in
  98                         WEP|wep)
  99                                 for idx in 1 2 3 4; do
 100                                         config_get key "$vif" "key${idx}"
 101                                         iwconfig "$ifname" enc "[$idx]" "${key:-off}"
 102                                 done
 103                                 config_get key "$vif" key
 104                                 key="${key:-1}"
 105                                 case "$key" in
 106                                         [1234]) iwconfig "$ifname" enc "[$key]";;
 107                                         *) iwconfig "$ifname" enc "$key";;
 108                                 esac
 109                         ;;
 110                         PSK|psk|PSK2|psk2)
 111                                 config_get key "$vif" key
 112                         ;;
 113                 esac
 114
 115                 case "$mode" in
 116                         adhoc)
 117                                 config_get addr "$vif" bssid
 118                                 [ -z "$addr" ] || {
 119                                         iwconfig "$ifname" ap "$addr"
 120                                 }
 121                         ;;
 122                 esac
 123                 config_get ssid "$vif" ssid
 124
 125                 config_get vif_txpower "$vif" txpower
 126                 # use vif_txpower (from wifi-iface) to override txpower (from
 127                 # wifi-device) if the latter doesn't exist
 128                 txpower="${txpower:-$vif_txpower}"
 129                 [ -z "$txpower" ] || iwconfig "$ifname" txpower "${txpower%%.*}"
 130
 131                 config_get frag "$vif" frag
 132                 if [ -n "$frag" ]; then
 133                         iwconfig "$ifname" frag "${frag%%.*}"
 134                 fi
 135
 136                 config_get rts "$vif" rts
 137                 if [ -n "$rts" ]; then
 138                         iwconfig "$ifname" rts "${rts%%.*}"
 139                 fi
 140
 141                 ifconfig "$ifname" up
 142                 iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
 143
 144                 local net_cfg bridge
 145                 net_cfg="$(find_net_config "$vif")"
 146                 [ -z "$net_cfg" ] || {
 147                         bridge="$(bridge_interface "$net_cfg")"
 148                         config_set "$vif" bridge "$bridge"
 149                         start_net "$ifname" "$net_cfg"
 150                 }
 151                 iwconfig "$ifname" essid "$ssid"
 152                 set_wifi_up "$vif" "$ifname"
 153                 case "$mode" in
 154                         ap)
 155                                 if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
 156                                         hostapd_setup_vif "$vif" nl80211 || {
 157                                                 echo "enable_mac80211($device): Failed to set up wpa for interface $ifname" >&2
 158                                                 # make sure this wifi interface won't accidentally stay open without encryption
 159                                                 ifconfig "$ifname" down
 160                                                 continue
 161                                         }
 162                                 fi
 163                         ;;
 164                         sta)
 165                                 if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
 166                                         wpa_supplicant_setup_vif "$vif" wext || {
 167                                                 echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
 168                                                 # make sure this wifi interface won't accidentally stay open without encryption
 169                                                 ifconfig "$ifname" down
 170                                                 continue
 171                                         }
 172                                 fi
 173                         ;;
 174                         mesh)
 175                                 # special case where physical interface should be down for mesh to work
 176                                 ifconfig "$ifname" down
 177                                 ifconfig "msh$mesh_idx" up
 178                                 iwlist msh$mesh_idx scan 2>/dev/null >/dev/null
 179                         ;;
 180                 esac
 181                 first=0
 182                 mesh_idx=$(expr $mesh_idx + 1)
 183         done
 184 }
 185
 186
 187 detect_mac80211() {
 188         cd /sys/class/net
 189         for dev in $(ls -d wlan* 2>&-); do
 190                 config_get type "$dev" type
 191                 [ "$type" = mac80211 ] && return
 192                 cat <<EOF
 193 config wifi-device  $dev
 194         option type     mac80211
 195         option channel  5
 196
 197         # REMOVE THIS LINE TO ENABLE WIFI:
 198         option disabled 1
 199
 200 config wifi-iface
 201         option device   $dev
 202         option network  lan
 203         option mode     ap
 204         option ssid     OpenWrt
 205         option encryption none
 206 EOF
 207         done
 208 }