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Text File  |  2012-05-20  |  5.2 KB  |  159 lines
  1. #! /bin/sh
  2. # 
  3. # Laptop mode tools module: Ethernet power saving tweaks.
  4. #
  5.  
  6. if [ x$CONTROL_ETHERNET = x1 ] || [ x$ENABLE_AUTO_MODULES = x1 -a x$CONTROL_ETHERNET = xauto ]; then
  7.     if [ $ON_AC -eq 1 ]; then
  8.         if [ "$ACTIVATE" -eq 1 ]; then
  9.             THROTTLE_ETHERNET="$LM_AC_THROTTLE_ETHERNET"
  10.         else
  11.             THROTTLE_ETHERNET="$NOLM_AC_THROTTLE_ETHERNET"
  12.         fi
  13.  
  14.                 if [ x$DISABLE_ETHERNET_ON_BATTERY = x1 ]; then
  15.                         # We are ON_AC and Disable feature is requested
  16.                         # So we might be required to re-enable the device.
  17.                         DISABLE_ETHERNET=0 #zero would mean that the device needs be re-enabled.
  18.                 else
  19.                         DISABLE_ETHERNET=2
  20.                         # IF this is the case, don't touch the device for
  21.                         # enable/disable
  22.                 fi
  23.     else
  24.         THROTTLE_ETHERNET="$BATT_THROTTLE_ETHERNET"
  25.  
  26.                 if [ x$DISABLE_ETHERNET_ON_BATTERY = x1 ]; then
  27.                         DISABLE_ETHERNET=1
  28.                 else
  29.                         DISABLE_ETHERNET=2
  30.                 fi
  31.     fi
  32.     
  33.     for DEVICE in $ETHERNET_DEVICES ; do
  34.                 DISABLED=0
  35.                 path=`readlink -f /sys/class/net/$DEVICE`
  36.         dev_path=""
  37.                 log "VERBOSE" "ethernet: $path"
  38.                 if ! [ -z $path ]; then
  39.                         if [ -d $path/device ]; then
  40.                           dev_path=`readlink -f $path/device`
  41.                           log "VERBOSE" "ethernet: $dev_path"
  42.                         fi
  43.                 fi
  44.  
  45.                 if ! [ -z $dev_path ] && [ -f $dev_path/enable ]; then
  46.                         if [ x$DISABLE_ETHERNET = x1 ]; then
  47.                                 if [ -f $dev_path/enable ]; then
  48.                                         echo 0 > $dev_path/enable
  49.                                         log "VERBOSE" "ethernet: Disabling ethernet device $DEVICE"
  50.                                         DISABLED=1
  51.                                 fi
  52.                         elif [ x$DISABLE_ETHERNET = x0 ]; then
  53.                                 if [ -f $dev_path/enable ]; then
  54.                                         echo 1 > $dev_path/enable
  55.                                         log "VERBOSE" "ethernet: Re-enabling ethernet device $DEVICE"
  56.                                         DISABLED=0
  57.                                 fi
  58.                         elif [ x$DISABLE_ETHERNET = x2 ]; then
  59.                                 DISABLED=0 # Be safe. :-)
  60.                         else
  61.                                 DISABLED=0 # Same here. Be safe. :-)
  62.                                            # For all other cases also, just disable it.
  63.                         fi
  64.                 else
  65.                         log "VERBOSE" "$DEVICE does not seem to be supporting enable/disable"
  66.                 fi
  67.  
  68.                if [ x$DISABLED = x1 ]; then
  69.                        continue
  70.                fi
  71.  
  72.         # Wakeup-on-LAN handling
  73.         if [ x$DISABLE_WAKEUP_ON_LAN = x1 ] ; then
  74.             ret=`ethtool -s $DEVICE wol d 2>&1`
  75.                         exit_status=$?;
  76.             log "VERBOSE" "$ret"
  77.             if [ $exit_status -eq 0 ]; then            
  78.                 log "VERBOSE" "Enabled wakeup-on-LAN for $DEVICE"
  79.             else
  80.                 log "VERBOSE" "Could not enable wakeup-on-LAN for $DEVICE"
  81.             fi
  82.         fi
  83.         
  84.         # Determine speed
  85.         speed=`mii-tool -v $DEVICE 2>/dev/null | grep capabilities | tr ' ' '\n' |\
  86.                         sort -n | sed -ne '/^1.*/p' | cut -d "b" -f1`
  87.                 if [ -z "$speed" ]; then
  88.                         speed=0;
  89.                 fi
  90.         max_s=0;
  91.         min_s=100000;
  92.         for s in $speed;
  93.         do
  94.             if [ $s -gt $max_s ]; then
  95.                 max_s=$s
  96.             fi
  97.             if [ $s -lt $min_s ]; then
  98.                 min_s=$s
  99.             fi
  100.         done
  101.         MAX_SPEED=$max_s;
  102.  
  103.         case "$THROTTLE_SPEED" in
  104.             "slowest")
  105.             THROTTLE_SPEED=$min_s
  106.             ;;
  107.             "fastest")
  108.             THROTTLE_SPEED=$max_s
  109.             ;;
  110.         esac
  111.  
  112.         # Handle throttling
  113.         if [ x$THROTTLE_ETHERNET = x1 ] ; then
  114.             # Handle auto-negotiation
  115.             ret=`ethtool -s $DEVICE autoneg off 2>&1`
  116.                         exit_status=$?;
  117.                         log "VERBOSE" "$ret";
  118.             if [ $exit_status -eq 0 ]; then
  119.                 log "VERBOSE" "Switched auto-negotiation to off for $DEVICE"
  120.             else
  121.                 log "VERBOSE" "Could not set auto-negotiation to off for $DEVICE"
  122.             fi
  123.  
  124.             # Handle Speed Throttling
  125.             ret=`ethtool -s $DEVICE speed $THROTTLE_SPEED 2>&1`
  126.                         exit_status=$?;
  127.                         log "VERBOSE" "$ret";
  128.             if [ $exit_status -eq 0 ]; then
  129.                 log "VERBOSE" "Throttled speed to $THROTTLE_SPEED Mbit for $DEVICE"
  130.             else
  131.                 log "VERBOSE" "Could not throttle speed for $DEVICE"
  132.             fi
  133.         else
  134.             # Handle auto-negotiation
  135.             ret=`ethtool -s $DEVICE autoneg on 2>&1`
  136.                         exit_status=$?;
  137.                         log "VERBOSE" "$ret";
  138.             if [ $exit_status -eq 0 ]; then
  139.                 log "VERBOSE" "Switched auto-negotiation to on for $DEVICE"
  140.             else
  141.                 log "VERBOSE" "Could not set auto-negotiation to on for $DEVICE"
  142.             fi
  143.  
  144.             # Handle Speed Throttling
  145.             ret=`ethtool -s $DEVICE speed $MAX_SPEED 2>&1`
  146.                         exit_status=$?;
  147.                         log "VERBOSE" "$ret";
  148.             if [ $exit_status -eq 0 ]; then
  149.                 log "VERBOSE" "Restored speed to $MAX_SPEED Mbit for $DEVICE"
  150.             else
  151.                 log "VERBOSE" "Could not restore speed for $DEVICE"
  152.             fi
  153.         fi
  154.     done
  155. else
  156.     log "VERBOSE" "Ethernet module is disabled."
  157. fi
  158.  
  159.