config/udev/enable_codel

   1 #!/bin/bash
   2 ############################################################################
   3 #                                                                          #
   4 # This file is part of the IPFire Firewall.                                #
   5 #                                                                          #
   6 # IPFire is free software; you can redistribute it and/or modify           #
   7 # it under the terms of the GNU General Public License as published by     #
   8 # the Free Software Foundation; either version 2 of the License, or        #
   9 # (at your option) any later version.                                      #
  10 #                                                                          #
  11 # IPFire is distributed in the hope that it will be useful,                #
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of           #
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            #
  14 # GNU General Public License for more details.                             #
  15 #                                                                          #
  16 # You should have received a copy of the GNU General Public License        #
  17 # along with IPFire; if not, write to the Free Software                    #
  18 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA #
  19 #                                                                          #
  20 # Copyright (C) 2007-2012 IPFire Team <info@ipfire.org>.                   #
  21 #                                                                          #
  22 ############################################################################
  23
  24 LOG_FACILITY="codel"
  25
  26 function log() {
  27         logger -t "${LOG_FACILITY}" $@
  28 }
  29
  30 if [ -z "${INTERFACE}" ]; then
  31         echo "INTERFACE variable was not set." >&2
  32         exit 1
  33 fi
  34
  35 # Do nothing for the loopback device.
  36 [ "${INTERFACE}" = "lo" ] && exit 0
  37
  38 case "${ACTION}" in
  39         add|register)
  40                 # Change root qdisc to use fq_codel.
  41                 /sbin/tc qdisc add root dev ${INTERFACE} fq_codel
  42                 ret=$?
  43
  44                 if [ ${ret} -eq 0 ]; then
  45                         log "Codel AQM has been enabled on '${INTERFACE}'."
  46                 else
  47                         log "Codel AQM could not be enabled on '${INTERFACE}'. Error code: ${ret}"
  48                         exit ${ret}
  49                 fi
  50                 ;;
  51
  52         remove|unregister)
  53                 # Nothing to do here.
  54                 ;;
  55 esac
  56
  57 exit 0