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