net/wing/files/lib/network/wing.sh

   1
   2 scan_wing() {
   3         config_set "$1" device "wing-$1"
   4 }
   5
   6 coldplug_interface_wing() {
   7         setup_interface_wing "wing-$1" "$1"
   8 }
   9
  10 stop_interface_wing() {
  11         local config="$1"
  12         local iface="wing-$config"
  13         env -i ACTION="ifdown" INTERFACE="$config" DEVICE="$iface" PROTO=wing /sbin/hotplug-call "iface" &
  14         [ -f "/var/run/$iface.pid" ] && {
  15                 kill -9 $(cat /var/run/$iface.pid)
  16                 rm /var/run/$iface.pid
  17         }
  18 }
  19
  20 setup_interface_wing() {
  21
  22         local iface="$1"
  23         local config="$2"
  24
  25         local hwmodes=""
  26         local freqs=""
  27         local ifnames=""
  28         local hwaddrs=""
  29
  30         config_load wireless
  31         config_foreach wing_list_interfaces wifi-iface
  32
  33         # start click router
  34         if [ "$hwmodes" = "" -o "$freqs" = "" -o "$ifnames" = "" -o "$hwaddrs" = "" ]; then
  35                 logger -t "$config" "No raw interfaces available. Exiting."
  36                 exit 1
  37         fi
  38
  39         local profile rc ls prefix debug
  40
  41         config_get profile $config profile "bulk"
  42         config_get rc $config rc "static"
  43         config_get ls $config ls "fcfs"
  44         config_get metric $config metric "wcett"
  45         config_get prefix $config prefix "6"
  46         config_get period $config period "10000"
  47         config_get tau $config tau "100000"
  48         config_get_bool debug $config debug "False"
  49
  50         local hwaddr=$(echo $hwaddrs | sed 's/ .*//');
  51         local ipaddr=$(printf "$prefix.%d.%d.%d" $(echo $hwaddr | awk -F: '{printf "0x%s 0x%s 0x%s",$4,$5,$6}'))
  52         local netmask=255.0.0.0
  53
  54         if ! wing_template_available "profile" "$profile" "bulk"; then
  55                 logger -t "$config" "Unable to configure router. Exiting."
  56                 exit 1
  57         fi
  58
  59         if ! wing_template_available "rc" "$rc" "static"; then
  60                 logger -t "$config" "Unable to configure rate control. Exiting."
  61                 exit 1
  62         fi
  63
  64         if ! wing_template_available "ls" "$ls" "radiotap"; then
  65                 logger -t "$config" "Unable to configure link scheduler. Exiting."
  66                 exit 1
  67         fi
  68
  69         if [ "$profile" = "" -o "$rc" = "" ]; then
  70                 logger -t "$config" "Unable to generate template. Exiting."
  71                 exit 1
  72         fi
  73
  74         [ "$debug" == 0 ] && dbg="" || dbg="-d"
  75
  76         /usr/bin/click_config -p $profile -r $rc -s $ls -l $metric \
  77                 -m "$hwmodes" -c "$freqs" -n "$ifnames" -a "$hwaddrs" $dbg \
  78                 | sed -e "s/__XR_IFNAME__/$iface/g" \
  79                 | sed -e "s/__XR_IP__/$ipaddr/g" \
  80                 | sed -e "s/__XR_NM__/$netmask/g" \
  81                 | sed -e "s/__XR_PERIOD__/$period/g" \
  82                 | sed -e "s/__XR_TAU__/$tau/g" > /tmp/$iface.click
  83
  84         /usr/bin/click-align /tmp/$iface.click > /tmp/$iface-aligned.click 2>/var/log/$iface.log
  85         [ ! -c /dev/net/tun ] && {
  86                 mkdir -p /dev/net/
  87                 mknod /dev/net/tun c 10 200
  88                 if [ ! -c /dev/net/tun ]; then
  89                         logger -t "$config" "Device not available (/dev/net/tun). Exiting."
  90                         exit 1
  91                 fi
  92         }
  93
  94         # creating the tun interface below will trigger a net subsystem event
  95         # prevent it from touching iface by disabling .auto here
  96         uci_set_state network "$config" auto 0
  97
  98         (/usr/bin/click /tmp/$iface-aligned.click >> /var/log/$iface.log 2>&1 &) &
  99         sleep 2
 100         ps | grep /usr/bin/click | grep -q -v grep || {
 101                 logger -t "$config" "Unable to start click. Exiting."
 102                 exit 1
 103         }
 104
 105         ps | grep /usr/bin/click | grep -v grep | awk '{print $1}' > /var/run/$iface.pid
 106
 107         ifconfig "$iface" "$ipaddr" netmask "$netmask"
 108         uci_set_state network $config ipaddr "$ipaddr"
 109         uci_set_state network $config netmask "$netmask"
 110
 111         env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=wing /sbin/hotplug-call "iface" &
 112
 113 }
 114
 115 wing_template_available() { # prefix, template, default
 116         local template="/etc/wing/$1.$2.click"
 117         [ ! -f $template ] && {
 118                 template="/etc/wing/$1.$3.click"
 119                 [ ! -f $template ] && {
 120                         return 1
 121                 }
 122         }
 123         return 0
 124 }
 125
 126 wing_list_interfaces() {
 127         local channel freq hwmode hwaddr ifname mode
 128         config_get mode $1 mode
 129         config_get_bool up $1 up
 130         [ "$up" = "1" -a "$mode" = "monitor" ] || return 0
 131         config_get ifname $1 ifname
 132         config_get device $1 device
 133         config_get hwmode $device hwmode "11bg"
 134         freq=$(iwlist $ifname freq | grep "Current Frequency" | sed -n "s/^.*Current Frequency:\([0-9.]*\) GHz (Channel \([0-9]*\))/\1/p" | awk '{print $1*1000}')
 135         hwaddr=$(/sbin/ifconfig $ifname 2>&1 | sed -n 's/^.*HWaddr \([0-9A-Za-z\-]*\).*/\1/p' | sed -e 's/\-/:/g' | cut -c1-17)
 136         freqs=${freqs:+"$freqs "}$freq
 137         hwmodes=${hwmodes:+"$hwmodes "}$hwmode
 138         hwaddrs=${hwaddrs:+"$hwaddrs "}$hwaddr
 139         ifnames=${ifnames:+"$ifnames "}$ifname
 140         /sbin/ifconfig $ifname mtu 1900
 141         /sbin/ifconfig $ifname txqueuelen 5
 142         /sbin/ifconfig $ifname up
 143 }
 144