package/madwifi/files/lib/wifi/madwifi.sh

   1 #!/bin/sh
   2 append DRIVERS "atheros"
   3
   4 scan_atheros() {
   5         local device="$1"
   6         local wds
   7         local adhoc sta ap
   8
   9         config_get vifs "$device" vifs
  10         for vif in $vifs; do
  11
  12                 config_get ifname "$vif" ifname
  13                 config_set "$vif" ifname "${ifname:-ath}"
  14
  15                 config_get mode "$vif" mode
  16                 case "$mode" in
  17                         adhoc|sta|ap)
  18                                 append $mode "$vif"
  19                         ;;
  20                         wds)
  21                                 config_get addr "$vif" bssid
  22                                 config_get ssid "$vif" ssid
  23                                 [ -z "$addr" -a -n "$ssid" ] && {
  24                                         config_set "$vif" wds 1
  25                                         config_set "$vif" mode sta
  26                                         mode="sta"
  27                                         addr="$ssid"
  28                                 }
  29                                 ${addr:+append $mode "$vif"}
  30                         ;;
  31                         *) echo "$device($vif): Invalid mode, ignored."; continue;;
  32                 esac
  33         done
  34
  35         case "${adhoc:+1}:${sta:+1}:${ap+1}" in
  36                 # valid mode combinations
  37                 1::) wds="";;
  38                 :1:1)config_set "$device" nosbeacon 1;; # AP+STA, can't use beacon timers for STA
  39                 :1:);;
  40                 ::1);;
  41                 ::);;
  42                 *) echo "$device: Invalid mode combination in config"; return 1;;
  43         esac
  44
  45         config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${wds:+$wds }"
  46 }
  47
  48
  49 disable_atheros() (
  50         local device="$1"
  51
  52         # kill all running hostapd and wpa_supplicant processes that
  53         # are running on atheros vifs
  54         for pid in `pidof hostapd wpa_supplicant`; do
  55                 grep ath /proc/$pid/cmdline >/dev/null && \
  56                         kill $pid
  57         done
  58
  59         include /lib/network
  60         cd /proc/sys/net
  61         for dev in *; do
  62                 grep "$device" "$dev/%parent" >/dev/null 2>/dev/null && {
  63                         ifconfig "$dev" down
  64                         unbridge "$dev"
  65                         wlanconfig "$dev" destroy
  66                 }
  67         done
  68         return 0
  69 )
  70
  71 enable_atheros() {
  72         config_get channel "$device" channel
  73         config_get vifs "$device" vifs
  74
  75         disable_atheros "$device"
  76         local first=1
  77         for vif in $vifs; do
  78                 nosbeacon=
  79                 config_get ifname "$vif" ifname
  80                 config_get enc "$vif" encryption
  81                 config_get mode "$vif" mode
  82
  83                 [ "$mode" = sta ] && config_get nosbeacon "$device" nosbeacon
  84
  85                 config_get ifname "$vif" ifname
  86                 ifname=$(wlanconfig "$ifname" create wlandev "$device" wlanmode "$mode" ${nosbeacon:+nosbeacon})
  87                 [ $? -ne 0 ] && {
  88                         echo "enable_atheros($device): Failed to set up $mode vif $ifname" >&2
  89                         continue
  90                 }
  91                 config_set "$vif" ifname "$ifname"
  92
  93                 [ "$first" = 1 ] && {
  94                         # only need to change freq band and channel on the first vif
  95                         config_get agmode "$device" mode
  96                         pureg=0
  97                         case "$agmode" in
  98                                 *b) agmode=11b;;
  99                                 *bg) agmode=11g;;
 100                                 *g) agmode=11g; pureg=1;;
 101                                 *a) agmode=11a;;
 102                                 *) agmode=11g;;
 103                         esac
 104                         iwconfig "$ifname" channel 0
 105                         iwpriv "$ifname" mode "$agmode"
 106                         iwpriv "$ifname" pureg "$pureg"
 107                         iwconfig "$ifname" channel "$channel"
 108                 }
 109
 110                 config_get_bool hidden "$vif" hidden
 111                 iwpriv "$ifname" hide_ssid "$hidden"
 112
 113                 config_get wds "$vif" wds
 114                 case "$wds" in
 115                         1|on|enabled) wds=1;;
 116                         *) wds=0;;
 117                 esac
 118                 iwpriv "$ifname" wds "$wds"
 119
 120                 wpa=
 121                 case "$enc" in
 122                         WEP|wep)
 123                                 for idx in 1 2 3 4; do
 124                                         config_get key "$vif" "key${idx}"
 125                                         iwconfig "$ifname" enc "[$idx]" "${key:-off}"
 126                                 done
 127                                 config_get key "$vif" key
 128                                 iwconfig "$ifname" enc "${key:-1}"
 129                         ;;
 130                         PSK|psk|PSK2|psk2)
 131                                 config_get key "$vif" key
 132                         ;;
 133                 esac
 134
 135                 case "$mode" in
 136                         wds)
 137                                 config_get addr "$vif" bssid
 138                                 iwpriv "$ifname" wds_add "$addr"
 139                         ;;
 140                         *)
 141                                 config_get ssid "$vif" ssid
 142                         ;;
 143                 esac
 144
 145                 [ "$mode" = "sta" ] && {
 146                         config_get_bool bgscan "$vif" bgscan 1
 147                         iwpriv "$ifname" bgscan "$bgscan"
 148                 }
 149
 150                 config_get_bool antdiv "$device" diversity 1
 151                 sysctl -w dev."$device".diversity="$antdiv" >&-
 152
 153                 config_get antrx "$device" rxantenna
 154                 if [ -n "$antrx" ]; then
 155                         sysctl -w dev."$device".rxantenna="$antrx" >&-
 156                 fi
 157
 158                 config_get anttx "$device" txantenna
 159                 if [ -n "$anttx" ]; then
 160                         sysctl -w dev."$device".txantenna="$anttx" >&-
 161                 fi
 162
 163                 config_get distance "$device" distance
 164                 if [ -n "$distance" ]; then
 165                         athctrl -i "$device" -d "$distance" >&-
 166                 fi
 167
 168                 config_get txpwr "$vif" txpower
 169                 if [ -n "$txpwr" ]; then
 170                         iwconfig "$ifname" txpower "${txpwr%%.*}"
 171                 fi
 172
 173                 ifconfig "$ifname" up
 174
 175                 local net_cfg bridge
 176                 net_cfg="$(find_net_config "$vif")"
 177                 [ -z "$net_cfg" ] || {
 178                         bridge="$(bridge_interface "$net_cfg")"
 179                         config_set "$vif" bridge "$bridge"
 180                         start_net "$ifname" "$net_cfg"
 181                 }
 182                 iwconfig "$ifname" essid "$ssid"
 183                 case "$mode" in
 184                         ap)
 185                                 hostapd_setup_vif "$vif" madwifi || {
 186                                         echo "enable_atheros($device): Failed to set up wpa for interface $ifname" >&2
 187                                         # make sure this wifi interface won't accidentally stay open without encryption
 188                                         ifconfig "$ifname" down
 189                                         wlanconfig "$ifname" destroy
 190                                         continue
 191                                 }
 192                         ;;
 193                         wds|sta)
 194                                 case "$enc" in
 195                                         PSK|psk|PSK2|psk2)
 196                                                 case "$enc" in
 197                                                         PSK|psk)
 198                                                                 proto='proto=WPA';;
 199                                                         PSK2|psk2)
 200                                                                 proto='proto=RSN';;
 201                                                 esac
 202                                                 cat > /var/run/wpa_supplicant-$ifname.conf <<EOF
 203 ctrl_interface=/var/run/wpa_supplicant
 204 network={
 205         scan_ssid=1
 206         ssid="$ssid"
 207         key_mgmt=WPA-PSK
 208         $proto
 209         psk="$key"
 210 }
 211 EOF
 212                                         ;;
 213                                         WPA|wpa|WPA2|wpa2)
 214                                                 #add wpa_supplicant calls here
 215                                         ;;
 216                                 esac
 217                                 wpa_supplicant ${bridge:+ -b $bridge} -Bw -D wext -i "$ifname" -c /var/run/wpa_supplicant-$ifname.conf
 218                         ;;
 219                 esac
 220                 first=0
 221         done
 222 }
 223
 224
 225 detect_atheros() {
 226         cd /proc/sys/dev
 227         [ -d ath ] || return
 228         for dev in wifi*; do
 229                 config_get type "$dev" type
 230                 [ "$type" = atheros ] && return
 231                 cat <<EOF
 232 config wifi-device  $dev
 233         option type     atheros
 234         option channel  5
 235 #       option diversity 1
 236 #       option txantenna 0
 237 #       option rxantenna 0
 238 #       option distance  2000
 239 # disable radio to prevent an open ap after reflashing:
 240         option disabled 1
 241
 242
 243 config wifi-iface
 244         option device   $dev
 245         option network  lan
 246         option mode     ap
 247         option ssid     OpenWrt
 248         option hidden   0
 249 #       option txpower  15
 250 #       option bgscan   enable
 251         option encryption none
 252
 253 EOF
 254         done
 255 }