cycle_wireless

   1 #!/bin/sh
   2
   3 NETWORK="$1"
   4 WIRELESS="$2"
   5
   6 if [ -z "$NETWORK" ]; then
   7         NETWORK="homewlan";
   8 fi;
   9
  10 if [ -z "$WIRELESS" ]; then
  11         WIRELESS="wireless";
  12 fi;
  13
  14 # First try a minor cycle
  15
  16 ESSID=$(/sbin/iwconfig "$WIRELESS" 2>/dev/null |grep ESSID |perl -ne 'm/\"([^\"]+)\"/ && print $1,qq(\n)')
  17
  18 if [ -n "$ESSID" ]; then
  19     sudo iwconfig "$WIRELESS" essid "$ESSID"
  20     sleep 1s;
  21     if /sbin/iwconfig "$WIRELESS" 2>/dev/null | grep 'Bit Rate'|grep -qv '=1 Mb/s'; then
  22         exit 0
  23     fi;
  24 fi;
  25
  26 # Failure, so major cycle
  27 sudo ifdown wireless;
  28 if [ "$WIRELESS" == "wireless" ]; then
  29     if lsmod|grep -q bcm43xx; then
  30         sudo modprobe -r bcm43xx;
  31         sudo modprobe bcm43xx;
  32     else
  33         sudo modprobe -r b43;
  34         sudo modprobe b43;
  35     fi;
  36     sleep 2s;
  37 fi;
  38 sudo ifup "wireless=${NETWORK}";