functions.macvlan

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2012  IPFire Network Development Team                         #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 MACVLAN_PORT_INTERFIX="mv"
  23
  24 function macvlan_create() {
  25         local device=${1}
  26         assert isset device
  27
  28         local parent=${2}
  29         assert isset parent
  30
  31         local address=${3}
  32         assert ismac address
  33
  34         # Check if the parent device exists.
  35         if ! device_exists ${parent}; then
  36                 log ERROR "macvlan: parent device '${parent}' does not exist"
  37                 return ${EXIT_ERROR}
  38         fi
  39
  40         # Check if the device we want to create does not already exist.
  41         if device_exists ${device}; then
  42                 log ERROR "macvlan: device '${device}' already exists"
  43                 return ${EXIT_ERROR}
  44         fi
  45
  46         # The macvlan device cannot be created, when the parent device
  47         # is attached to a bridge. So we detach the parent device and
  48         # reattach it again.
  49         local bridge
  50         if device_is_bridge_attached ${parent}; then
  51                 bridge=$(device_get_bridge ${parent})
  52
  53                 # Detach the parent device.
  54                 bridge_detach_device ${bridge} ${parent}
  55         fi
  56
  57         # Actually create the device.
  58         cmd_quiet ip link add link ${parent} name ${device} address ${address} \
  59                 type macvlan
  60         local ret=$?
  61
  62         if [ ${ret} -eq ${EXIT_OK} ]; then
  63                 log DEBUG "macvlan device '${device}' has been created"
  64         else
  65                 log ERROR "Could not create macvlan device '${device}': ${ret}"
  66         fi
  67
  68         # Re-attach device.
  69         if isset bridge; then
  70                 bridge_attach_device ${bridge} ${parent}
  71         fi
  72
  73         return ${ret}
  74 }
  75
  76 function macvlan_remove() {
  77         local device=${1}
  78         assert isset device
  79
  80         device_delete ${device}
  81 }