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|ahdemo|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}:${ap+1}" in
  36                 # valid mode combinations
  37                 1::) wds="";;
  38                 1::1);;
  39                 :1:1)config_set "$device" nosbeacon 1;; # AP+STA, can't use beacon timers for STA
  40                 :1:);;
  41                 ::1);;
  42                 ::);;
  43                 *) echo "$device: Invalid mode combination in config"; return 1;;
  44         esac
  45
  46         config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${ahdemo:+$ahdemo }${sta:+$sta }${wds:+$wds }"
  47 }
  48
  49
  50 disable_atheros() (
  51         local device="$1"
  52
  53         set_wifi_down "$device"
  54         # kill all running hostapd and wpa_supplicant processes that
  55         # are running on atheros vifs
  56         for pid in `pidof hostapd wpa_supplicant`; do
  57                 grep ath /proc/$pid/cmdline >/dev/null && \
  58                         kill $pid
  59         done
  60
  61         include /lib/network
  62         cd /proc/sys/net
  63         for dev in *; do
  64                 grep "$device" "$dev/%parent" >/dev/null 2>/dev/null && {
  65                         ifconfig "$dev" down
  66                         unbridge "$dev"
  67                         wlanconfig "$dev" destroy
  68                 }
  69         done
  70         return 0
  71 )
  72
  73 enable_atheros() {
  74         local device="$1"
  75         config_get channel "$device" channel
  76         config_get vifs "$device" vifs
  77
  78         local first=1
  79         for vif in $vifs; do
  80                 nosbeacon=
  81                 config_get ifname "$vif" ifname
  82                 config_get enc "$vif" encryption
  83                 config_get mode "$vif" mode
  84
  85                 [ "$mode" = sta ] && config_get nosbeacon "$device" nosbeacon
  86
  87                 config_get ifname "$vif" ifname
  88                 ifname=$(wlanconfig "$ifname" create wlandev "$device" wlanmode "$mode" ${nosbeacon:+nosbeacon})
  89                 [ $? -ne 0 ] && {
  90                         echo "enable_atheros($device): Failed to set up $mode vif $ifname" >&2
  91                         continue
  92                 }
  93                 config_set "$vif" ifname "$ifname"
  94
  95                 [ "$first" = 1 ] && {
  96                         # only need to change freq band and channel on the first vif
  97                         config_get agmode "$device" mode
  98                         pureg=0
  99                         case "$agmode" in
 100                                 *b) agmode=11b;;
 101                                 *bg) agmode=11g;;
 102                                 *g) agmode=11g; pureg=1;;
 103                                 *a) agmode=11a;;
 104                                 *) agmode=auto;;
 105                         esac
 106                         iwconfig "$ifname" channel 0 >/dev/null 2>/dev/null
 107                         ifconfig "$ifname" up
 108                         sleep 1
 109                         iwpriv "$ifname" mode "$agmode"
 110                         iwpriv "$ifname" pureg "$pureg"
 111                         iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
 112                 }
 113
 114                 config_get_bool hidden "$vif" hidden 0
 115                 iwpriv "$ifname" hide_ssid "$hidden"
 116
 117                 config_get_bool ff "$vif" ff 0
 118                 iwpriv "$ifname" ff "$ff"
 119
 120                 config_get wds "$vif" wds
 121                 case "$wds" in
 122                         1|on|enabled) wds=1;;
 123                         *) wds=0;;
 124                 esac
 125                 iwpriv "$ifname" wds "$wds"
 126
 127                 wpa=
 128                 case "$enc" in
 129                         WEP|wep)
 130                                 for idx in 1 2 3 4; do
 131                                         config_get key "$vif" "key${idx}"
 132                                         iwconfig "$ifname" enc "[$idx]" "${key:-off}"
 133                                 done
 134                                 config_get key "$vif" key
 135                                 key="${key:-1}"
 136                                 case "$key" in
 137                                         [1234]) iwconfig "$ifname" enc "[$key]";;
 138                                         *) iwconfig "$ifname" enc "$key";;
 139                                 esac
 140                         ;;
 141                         PSK|psk|PSK2|psk2)
 142                                 config_get key "$vif" key
 143                         ;;
 144                 esac
 145
 146                 case "$mode" in
 147                         wds)
 148                                 config_get addr "$vif" bssid
 149                                 iwpriv "$ifname" wds_add "$addr"
 150                         ;;
 151                         adhoc|ahdemo)
 152                                 config_get addr "$vif" bssid
 153                                 [ -z "$addr" ] || {
 154                                         iwconfig "$ifname" ap "$addr"
 155                                 }
 156                         ;;
 157                 esac
 158                 config_get ssid "$vif" ssid
 159
 160                 [ "$mode" = "sta" ] && {
 161                         config_get_bool bgscan "$vif" bgscan 0
 162                         iwpriv "$ifname" bgscan "$bgscan"
 163                 }
 164
 165                 config_get_bool antdiv "$device" diversity 1
 166                 sysctl -w dev."$device".diversity="$antdiv" >&-
 167
 168                 config_get antrx "$device" rxantenna
 169                 if [ -n "$antrx" ]; then
 170                         sysctl -w dev."$device".rxantenna="$antrx" >&-
 171                 fi
 172
 173                 config_get anttx "$device" txantenna
 174                 if [ -n "$anttx" ]; then
 175                         sysctl -w dev."$device".txantenna="$anttx" >&-
 176                 fi
 177
 178                 config_get distance "$device" distance
 179                 if [ -n "$distance" ]; then
 180                         athctrl -i "$device" -d "$distance" >&-
 181                 fi
 182
 183                 config_get txpwr "$vif" txpower
 184                 if [ -n "$txpwr" ]; then
 185                         iwconfig "$ifname" txpower "${txpwr%%.*}"
 186                 fi
 187
 188                 config_get frag "$vif" frag
 189                 if [ -n "$frag" ]; then
 190                         iwconfig "$ifname" frag "${frag%%.*}"
 191                 fi
 192
 193                 config_get rts "$vif" rts
 194                 if [ -n "$rts" ]; then
 195                         iwconfig "$ifname" rts "${rts%%.*}"
 196                 fi
 197
 198                 ifconfig "$ifname" up
 199                 iwconfig "$ifname" channel "$channel" >/dev/null 2>/dev/null
 200
 201                 local net_cfg bridge
 202                 net_cfg="$(find_net_config "$vif")"
 203                 [ -z "$net_cfg" ] || {
 204                         bridge="$(bridge_interface "$net_cfg")"
 205                         config_set "$vif" bridge "$bridge"
 206                         start_net "$ifname" "$net_cfg"
 207                 }
 208                 iwconfig "$ifname" essid "$ssid"
 209                 set_wifi_up "$vif" "$ifname"
 210                 case "$mode" in
 211                         ap)
 212                                 config_get_bool isolate "$vif" isolate 0
 213                                 iwpriv "$ifname" ap_bridge "$((isolate^1))"
 214
 215                                 if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
 216                                         hostapd_setup_vif "$vif" madwifi || {
 217                                                 echo "enable_atheros($device): Failed to set up wpa for interface $ifname" >&2
 218                                                 # make sure this wifi interface won't accidentally stay open without encryption
 219                                                 ifconfig "$ifname" down
 220                                                 wlanconfig "$ifname" destroy
 221                                                 continue
 222                                         }
 223                                 fi
 224                         ;;
 225                         wds|sta)
 226                                 case "$enc" in
 227                                         PSK|psk|PSK2|psk2)
 228                                                 case "$enc" in
 229                                                         PSK|psk)
 230                                                                 proto='proto=WPA';;
 231                                                         PSK2|psk2)
 232                                                                 proto='proto=RSN';;
 233                                                 esac
 234                                                 cat > /var/run/wpa_supplicant-$ifname.conf <<EOF
 235 ctrl_interface=/var/run/wpa_supplicant
 236 network={
 237         scan_ssid=1
 238         ssid="$ssid"
 239         key_mgmt=WPA-PSK
 240         $proto
 241         psk="$key"
 242 }
 243 EOF
 244                                         ;;
 245                                         WPA|wpa|WPA2|wpa2)
 246                                                 #add wpa_supplicant calls here
 247                                         ;;
 248                                 esac
 249                                 [ -z "$proto" ] || wpa_supplicant ${bridge:+ -b $bridge} -B -D wext -i "$ifname" -c /var/run/wpa_supplicant-$ifname.conf
 250                         ;;
 251                 esac
 252                 first=0
 253         done
 254 }
 255
 256
 257 detect_atheros() {
 258         cd /proc/sys/dev
 259         [ -d ath ] || return
 260         for dev in $(ls -d wifi* 2>&-); do
 261                 config_get type "$dev" type
 262                 [ "$type" = atheros ] && return
 263                 cat <<EOF
 264 config wifi-device  $dev
 265         option type     atheros
 266         option channel  5
 267
 268         # REMOVE THIS LINE TO ENABLE WIFI:
 269         option disabled 1
 270
 271 config wifi-iface
 272         option device   $dev
 273         option network  lan
 274         option mode     ap
 275         option ssid     OpenWrt
 276         option encryption none
 277 EOF
 278         done
 279 }