bonding

嵌入式无线路由系统openwrt的web配置工具

#!/bin/sh /etc/rc.common
# Copyright (C) 2009 OpenRB.com

START=43
STOP=43

LOADED=0

# module configuration
bonding() {
  PARAMS="bonding"

  # number of bonding devices in the system
  config_get max_bonds $1 max_bonds
  [ -z "$max_bonds" ] && max_bonds=1
  PARAMS="$PARAMS max_bonds=$max_bonds"

  # bonding policy
  config_get mode $1 mode
  [ -z "$mode" ] && mode=0
  PARAMS="$PARAMS mode=$mode"

  # monitoring mode settings
  config_get mon_mode $1 mon_mode
  config_get miimon $1 miimon
  config_get arp_ip_target $1 arp_ip_target
  config_get arp_interval $1 arp_interval

  # force miimon monitoring mode if no arp target or interval specified
  [ -z "$arp_ip_target" -o -z "$arp_interval" ] && mon_mode="miimon" 

  # set monitoring mode parameters
  [ -z "$mon_mode" -o "$mon_mode" != "arp" ] && {
    [ -z "$miimon" ] && miimon=100
    PARAMS="$PARAMS miimon=$miimon"
  } || {
    PARAMS="$PARAMS arp_interval=$arp_interval arp_ip_target=$arp_ip_target"
  }

  # insert module set state if module is loaded or stop execution on error
  insmod $PARAMS
  [ "$?" -eq 0 ] && LOADED=1 || exit 1
}

# interface configuration
interface() {
  config_get enabled $1 enabled
  [ "$enabled" -ne 1 ] && return 1

  # static interface configuration
  config_get ipaddr $1 ipaddr
  config_get netmask $1 netmask
  config_get gateway $1 gateway

  # slave interfaces
  config_get ifname $1 ifname

  # interface won't be brought up without ip and netmask or without slaves
  [ -z "$ipaddr" -o -z "$netmask" -o -z "$ifname" ] && return 1

  # bring interface up, ip will be set after all slaves have been added
  ifconfig "$1" up

  # stop if interface could not be brought up (max_bonds is incorrect?)
  [ "$?" -ne 0 ] && return 1

  # setup slaves with no ip forced
  for sif in $ifname; do
    ifconfig "$sif" down
    ifconfig "$sif" 0.0.0.0 up
    ifenslave "$1" "$sif"
  done

  # setup interface and set default gateway if required
  sleep 2
  ifconfig "$1" "$ipaddr" netmask "$netmask"
  [ -z "$gateway" ] || route add default gw "$gateway" dev "$1"
}

start() {
  rmmod bonding 2>/dev/null

  config_load bonding
  config_foreach bonding bonding

  [ "$LOADED" -ne 1 ] && exit 2
  sleep 2
  config_foreach interface interface
}

stop() {
  rmmod bonding 2>/dev/null
}