def run(self):
"""
Main execute function for running the switch
"""
logging.basicConfig(filename="", level=logging.DEBUG)
self.logger.info("Switch thread running")
host = self.config.controller_ip
if self.config.passive_connect:
host = None
self.controller = ControllerInterface(host=host,
port=self.config.controller_port)
self.dataplane = dataplane.DataPlane()
self.logger.info("Dataplane started")
self.pipeline = FlowPipeline(self, self.config.n_tables)
self.pipeline.controller_set(self.controller)
self.pipeline.start()
self.logger.info("Pipeline started")
link_status = ofp.OFPPF_1GB_FD #@todo dynamically infer this from the interface status
for of_port, ifname in self.config.port_map.items():
self.dataplane.port_add(ifname, of_port)
port = ofp.ofp_port()
port.port_no = of_port
port.name = ifname
port.max_speed = 9999999
port.curr_speed = 9999999
mac = netutils.get_if_hwaddr(port.name)
self.logger.info("Added port %s (ind=%d) with mac %x:%x:%x:%x:%x:%x" % ((ifname, of_port) + mac))
port.hw_addr = list(mac) # stupid frickin' python; need to convert a tuple to a list
port.config = 0
port.state = 0 #@todo infer if link is up/down and set OFPPS_LINK_DOWN
port.advertised = link_status
port.supported = link_status
port.curr = link_status
port.peer = link_status
self.ports[of_port]=port
# Register to receive all controller packets
self.controller.register("all", self.ctrl_pkt_handler, calling_obj=self)
self.controller.start()
self.logger.info("Controller started")
# Process packets when they arrive
self.logger.info("Entering packet processing loop")
while True:
(of_port, data, recv_time) = self.dataplane.poll(timeout=5)
if not self.controller.isAlive():
# @todo Implement fail open/closed
self.logger.error("Controller dead\n")
break
if not self.pipeline.isAlive():
# @todo Implement fail open/closed
self.logger.error("Pipeline dead\n")
break
if data is None:
self.logger.debug("No packet for 5 seconds\n")
continue
self.logger.debug("Packet len " + str(len(data)) +
" in on port " + str(of_port))
packet = Packet(in_port=of_port, data=data)
self.pipeline.apply_pipeline(self, packet)
self.logger.error("Exiting OFSwitch thread")
self.pipeline.kill()
self.dataplane.kill()
self.pipeline.join()
self.controller.join()
def run(self):
"""
Main execute function for running the switch
"""
logging.basicConfig(filename="", level=logging.DEBUG)
self.logger.info("Switch thread running")
host = self.config.controller_ip
if self.config.passive_connect:
host = None
self.controller = ControllerInterface(host=host,
port=self.config.controller_port)
self.dataplane = dataplane.DataPlane()
self.logger.info("Dataplane started")
self.pipeline = FlowPipeline(self, self.config.n_tables)
self.pipeline.controller_set(self.controller)
self.pipeline.start()
self.logger.info("Pipeline started")
link_status = ofp.OFPPF_1GB_FD #@todo dynamically infer this from the interface status
for of_port, ifname in self.config.port_map.items():
self.dataplane.port_add(ifname, of_port)
port = ofp.ofp_port()
port.port_no = of_port
port.name = ifname
port.max_speed = 9999999
port.curr_speed = 9999999
mac = netutils.get_if_hwaddr(port.name)
self.logger.info(
"Added port %s (ind=%d) with mac %x:%x:%x:%x:%x:%x" %
((ifname, of_port) + mac))
port.hw_addr = list(
mac
) # stupid frickin' python; need to convert a tuple to a list
port.config = 0
port.state = 0 #@todo infer if link is up/down and set OFPPS_LINK_DOWN
port.advertised = link_status
port.supported = link_status
port.curr = link_status
port.peer = link_status
self.ports[of_port] = port
# Register to receive all controller packets
self.controller.register("all",
self.ctrl_pkt_handler,
calling_obj=self)
self.controller.start()
self.logger.info("Controller started")
# Process packets when they arrive
self.logger.info("Entering packet processing loop")
while True:
(of_port, data, recv_time) = self.dataplane.poll(timeout=5)
if not self.controller.isAlive():
# @todo Implement fail open/closed
self.logger.error("Controller dead\n")
break
if not self.pipeline.isAlive():
# @todo Implement fail open/closed
self.logger.error("Pipeline dead\n")
break
if data is None:
self.logger.debug("No packet for 5 seconds\n")
continue
self.logger.debug("Packet len " + str(len(data)) + " in on port " +
str(of_port))
packet = Packet(in_port=of_port, data=data)
self.pipeline.apply_pipeline(self, packet)
self.logger.error("Exiting OFSwitch thread")
self.pipeline.kill()
self.dataplane.kill()
self.pipeline.join()
self.controller.join()
class OFSwitch(Thread):
"""
Top level class for the ofps implementation
Components:
A set of dataplane ports in a DataPlane object
A controller connection and ofp stack
A flow table object
The switch is responsible for:
Plumbing the packets from the dataplane to the flow table
Executing actions as specified by the output from the flow table
Processing the controller messages
The main thread processes dataplane packets and control packets
"""
VERSION = "OFPS version 0.1"
# @todo Support fail open/closed
def __init__(self):
"""
Constructor for base class
"""
super(OFSwitch, self).__init__()
self.setDaemon(True)
self.config = OFSwitchConfig()
self.logger = logging.getLogger("switch")
self.groups = GroupTable()
self.ports = {} # hash of ports[index]=ofp.ofp_port
def config_set(self, config):
"""
Set the configuration for the switch.
Contents:
Controller IP address and port
Fail open/closed
Passive listener port
Number of tables to support
"""
self.config = config
def ctrl_pkt_handler(self, cookie, msg, rawmsg):
"""
Handle a message from the controller
@todo Use a queue so messages can be processed in the main thread
"""
try:
callable = getattr(ctrl_msg, msg.__class__.__name__)
self.logger.debug("Calling ctrl_msg.%s" % msg.__class__.__name__)
callable(self, msg, rawmsg)
except KeyError:
self.logger.error("Could not execute controller fn (%s)" %
str(msg.__class__.__name__))
sys.exit(1)
return True
def getConfig(self,element):
"""
Return the element from the config
@param element: a string
"""
return self.config.getConfig(element)
def run(self):
"""
Main execute function for running the switch
"""
logging.basicConfig(filename="", level=logging.DEBUG)
self.logger.info("Switch thread running")
host = self.config.controller_ip
if self.config.passive_connect:
host = None
self.controller = ControllerInterface(host=host,
port=self.config.controller_port)
self.dataplane = dataplane.DataPlane()
self.logger.info("Dataplane started")
self.pipeline = FlowPipeline(self, self.config.n_tables)
self.pipeline.controller_set(self.controller)
self.pipeline.start()
self.logger.info("Pipeline started")
link_status = ofp.OFPPF_1GB_FD #@todo dynamically infer this from the interface status
for of_port, ifname in self.config.port_map.items():
self.dataplane.port_add(ifname, of_port)
port = ofp.ofp_port()
port.port_no = of_port
port.name = ifname
port.max_speed = 9999999
port.curr_speed = 9999999
mac = netutils.get_if_hwaddr(port.name)
self.logger.info("Added port %s (ind=%d) with mac %x:%x:%x:%x:%x:%x" % ((ifname, of_port) + mac))
port.hw_addr = list(mac) # stupid frickin' python; need to convert a tuple to a list
port.config = 0
port.state = 0 #@todo infer if link is up/down and set OFPPS_LINK_DOWN
port.advertised = link_status
port.supported = link_status
port.curr = link_status
port.peer = link_status
self.ports[of_port]=port
# Register to receive all controller packets
self.controller.register("all", self.ctrl_pkt_handler, calling_obj=self)
self.controller.start()
self.logger.info("Controller started")
# Process packets when they arrive
self.logger.info("Entering packet processing loop")
while True:
(of_port, data, recv_time) = self.dataplane.poll(timeout=5)
if not self.controller.isAlive():
# @todo Implement fail open/closed
self.logger.error("Controller dead\n")
break
if not self.pipeline.isAlive():
# @todo Implement fail open/closed
self.logger.error("Pipeline dead\n")
break
if data is None:
self.logger.debug("No packet for 5 seconds\n")
continue
self.logger.debug("Packet len " + str(len(data)) +
" in on port " + str(of_port))
packet = Packet(in_port=of_port, data=data)
self.pipeline.apply_pipeline(self, packet)
self.logger.error("Exiting OFSwitch thread")
self.pipeline.kill()
self.dataplane.kill()
self.pipeline.join()
self.controller.join()
def __str__(self):
str = "OFPS:: OpenFlow Python Switch\n"
str += " datapath_id = %s\n" % (self.config.datapath_id2str(
self.config.getConfig('datapath_id')))
for key, val in self.config.port_map.iteritems():
str += " interface %d = %s\n" % (key, val)
return str
def version(self):
return OFSwitch.VERSION
class OFSwitch(Thread):
"""
Top level class for the ofps implementation
Components:
A set of dataplane ports in a DataPlane object
A controller connection and ofp stack
A flow table object
The switch is responsible for:
Plumbing the packets from the dataplane to the flow table
Executing actions as specified by the output from the flow table
Processing the controller messages
The main thread processes dataplane packets and control packets
"""
VERSION = "OFPS version 0.1"
# @todo Support fail open/closed
def __init__(self):
"""
Constructor for base class
"""
super(OFSwitch, self).__init__()
self.setDaemon(True)
self.config = OFSwitchConfig()
self.logger = logging.getLogger("switch")
self.groups = GroupTable()
self.ports = {} # hash of ports[index]=ofp.ofp_port
def config_set(self, config):
"""
Set the configuration for the switch.
Contents:
Controller IP address and port
Fail open/closed
Passive listener port
Number of tables to support
"""
self.config = config
def ctrl_pkt_handler(self, cookie, msg, rawmsg):
"""
Handle a message from the controller
@todo Use a queue so messages can be processed in the main thread
"""
try:
callable = getattr(ctrl_msg, msg.__class__.__name__)
self.logger.debug("Calling ctrl_msg.%s" % msg.__class__.__name__)
callable(self, msg, rawmsg)
except KeyError:
self.logger.error("Could not execute controller fn (%s)" %
str(msg.__class__.__name__))
sys.exit(1)
return True
def getConfig(self, element):
"""
Return the element from the config
@param element: a string
"""
return self.config.getConfig(element)
def run(self):
"""
Main execute function for running the switch
"""
logging.basicConfig(filename="", level=logging.DEBUG)
self.logger.info("Switch thread running")
host = self.config.controller_ip
if self.config.passive_connect:
host = None
self.controller = ControllerInterface(host=host,
port=self.config.controller_port)
self.dataplane = dataplane.DataPlane()
self.logger.info("Dataplane started")
self.pipeline = FlowPipeline(self, self.config.n_tables)
self.pipeline.controller_set(self.controller)
self.pipeline.start()
self.logger.info("Pipeline started")
link_status = ofp.OFPPF_1GB_FD #@todo dynamically infer this from the interface status
for of_port, ifname in self.config.port_map.items():
self.dataplane.port_add(ifname, of_port)
port = ofp.ofp_port()
port.port_no = of_port
port.name = ifname
port.max_speed = 9999999
port.curr_speed = 9999999
mac = netutils.get_if_hwaddr(port.name)
self.logger.info(
"Added port %s (ind=%d) with mac %x:%x:%x:%x:%x:%x" %
((ifname, of_port) + mac))
port.hw_addr = list(
mac
) # stupid frickin' python; need to convert a tuple to a list
port.config = 0
port.state = 0 #@todo infer if link is up/down and set OFPPS_LINK_DOWN
port.advertised = link_status
port.supported = link_status
port.curr = link_status
port.peer = link_status
self.ports[of_port] = port
# Register to receive all controller packets
self.controller.register("all",
self.ctrl_pkt_handler,
calling_obj=self)
self.controller.start()
self.logger.info("Controller started")
# Process packets when they arrive
self.logger.info("Entering packet processing loop")
while True:
(of_port, data, recv_time) = self.dataplane.poll(timeout=5)
if not self.controller.isAlive():
# @todo Implement fail open/closed
self.logger.error("Controller dead\n")
break
if not self.pipeline.isAlive():
# @todo Implement fail open/closed
self.logger.error("Pipeline dead\n")
break
if data is None:
self.logger.debug("No packet for 5 seconds\n")
continue
self.logger.debug("Packet len " + str(len(data)) + " in on port " +
str(of_port))
packet = Packet(in_port=of_port, data=data)
self.pipeline.apply_pipeline(self, packet)
self.logger.error("Exiting OFSwitch thread")
self.pipeline.kill()
self.dataplane.kill()
self.pipeline.join()
self.controller.join()
def __str__(self):
str = "OFPS:: OpenFlow Python Switch\n"
str += " datapath_id = %s\n" % (self.config.datapath_id2str(
self.config.getConfig('datapath_id')))
for key, val in self.config.port_map.iteritems():
str += " interface %d = %s\n" % (key, val)
return str
def version(self):
return OFSwitch.VERSION
