113 lines
4.2 KiB
Python
Executable file
113 lines
4.2 KiB
Python
Executable file
#
|
|
# CORE
|
|
# Copyright (c)2010-2012 the Boeing Company.
|
|
# See the LICENSE file included in this distribution.
|
|
#
|
|
''' Sample user-defined service.
|
|
'''
|
|
|
|
import os
|
|
import re
|
|
|
|
from core.service import CoreService, addservice
|
|
|
|
class OvsService(CoreService):
|
|
''' This is a sample user-defined service.
|
|
'''
|
|
# a unique name is required, without spaces
|
|
_name = "OvsService"
|
|
# you can create your own group here
|
|
_group = "SDN"
|
|
# list of other services this service depends on
|
|
_depends = ()
|
|
# per-node directories
|
|
_dirs = ("/etc/openvswitch", "/var/run/openvswitch", "/var/log/openvswitch")
|
|
# generated files (without a full path this file goes in the node's dir,
|
|
# e.g. /tmp/pycore.12345/n1.conf/)
|
|
_configs = ('OvsService.sh', )
|
|
# this controls the starting order vs other enabled services
|
|
_startindex = 50
|
|
# list of startup commands, also may be generated during startup
|
|
_startup = ('sh OvsService.sh',)
|
|
# list of shutdown commands
|
|
_shutdown = ('killall ovs-vswitchd','killall ovsdb-server')
|
|
|
|
@classmethod
|
|
def generateconfig(cls, node, filename, services):
|
|
''' Return a string that will be written to filename, or sent to the
|
|
GUI for user customization.
|
|
'''
|
|
# Check whether the node is running zebra
|
|
has_zebra = 0
|
|
for s in services:
|
|
if s._name == "zebra":
|
|
has_zebra = 1
|
|
|
|
# Check whether the node is running an SDN controller
|
|
has_sdn_ctrlr = 0
|
|
for s in services:
|
|
if s._name == "ryuService":
|
|
has_sdn_ctrlr = 1
|
|
|
|
cfg = "#!/bin/sh\n"
|
|
cfg += "# auto-generated by OvsService (OvsService.py)\n"
|
|
cfg += "/etc/init.d/openvswitch-switch start < /dev/null\n"
|
|
cfg += "ovs-vsctl add-br ovsbr0\n"
|
|
cfg += "ifconfig ovsbr0 up\n"
|
|
|
|
for ifc in node.netifs():
|
|
if hasattr(ifc, 'control') and ifc.control == True:
|
|
continue
|
|
ifnumstr = re.findall(r"\d+", ifc.name)
|
|
ifnum = ifnumstr[0]
|
|
|
|
# create virtual interfaces
|
|
cfg += "ip link add rtr%s type veth peer name sw%s\n" % (ifnum, ifnum)
|
|
cfg += "ifconfig rtr%s up\n" % ifnum
|
|
cfg += "ifconfig sw%s up\n" % ifnum
|
|
|
|
# remove ip address of eths because quagga/zebra will assign same IPs to rtr interfaces
|
|
# or assign them manually to rtr interfaces if zebra is not running
|
|
for ifcaddr in ifc.addrlist:
|
|
if ifcaddr.find(".") >= 0:
|
|
cfg += "ip addr del %s dev %s\n" % (ifcaddr, ifc.name)
|
|
if has_zebra == 0:
|
|
cfg += "ip addr add %s dev rtr%s\n" % (ifcaddr, ifnum)
|
|
elif ifcaddr.find(":") >= 0:
|
|
cfg += "ip -6 addr del %s dev %s\n" % (ifcaddr, ifc.name)
|
|
if has_zebra == 0:
|
|
cfg += "ip -6 addr add %s dev rtr%s\n" % (ifcaddr, ifnum)
|
|
else:
|
|
raise Value, "invalid address: %s", x
|
|
|
|
# add interfaces to bridge
|
|
cfg += "ovs-vsctl add-port ovsbr0 eth%s\n" % ifnum
|
|
cfg += "ovs-vsctl add-port ovsbr0 sw%s\n" % ifnum
|
|
|
|
#if has_sdn_ctrlr == 1: #TODO- even if the controller is not local, it finds it
|
|
# Add rule for default controller if there is one local
|
|
cfg += "ovs-vsctl set-controller ovsbr0 tcp:127.0.0.1:6633\n"
|
|
#else:
|
|
# Delete flows otherwise
|
|
#cfg += "ovs-ofctl del-flows ovsbr0\n"
|
|
|
|
# Setup default flows
|
|
portnum = 1
|
|
for ifc in node.netifs():
|
|
if hasattr(ifc, 'control') and ifc.control == True:
|
|
continue
|
|
cfg += "ovs-ofctl add-flow ovsbr0 priority=1000,in_port=%d,action=output:%d\n" % (portnum, portnum+1)
|
|
cfg += "ovs-ofctl add-flow ovsbr0 priority=1000,in_port=%d,action=output:%d\n" % (portnum+1, portnum)
|
|
portnum += 2
|
|
|
|
return cfg
|
|
|
|
@staticmethod
|
|
def subnetentry(x):
|
|
# TODO - Maybe move default flow rules to here?
|
|
return
|
|
|
|
|
|
# this line is required to add the above class to the list of available services
|
|
addservice(OvsService)
|
|
|