def __init__ (self, *args, **kw):
"""
Create a switch instance
Additional options over superclass:
log_level (default to default_log_level) is level for this instance
"""
log_level = kw.pop('log_level', self.default_log_level)
self.q = Queue()
self.t = Thread(target=self._consumer_threadproc)
core.addListeners(self)
super(PCapSwitch,self).__init__(*args,**kw)
self.px = {}
for p in self.ports.values():
px = pxpcap.PCap(p.name, callback = self._pcap_rx, start = False)
px.port_no = p.port_no
self.px[p.port_no] = px
self.log.setLevel(log_level)
for px in self.px.itervalues():
px.start()
self.t.start()
def __init__(self, host_device, filter_string):
self.read_queue = Queue.Queue()
import pox.lib.pxpcap as pxpcap
if not pxpcap.enabled:
raise RuntimeError(
'''You need to compile POX's pxpcap library:\n'''
'''$ (cd pox/pox/lib/pxcap/pxcap_c && python setup.py build)'''
)
pcap = pxpcap.PCap(start=False,
filter=filter_string,
callback=self._pcap_callback)
pcap.open(device=host_device, promiscuous=True)
pcap.start(addListeners=False)
self._pcap = pcap
def add_interface(self, name, port_no=-1, on_error=None, start=False):
if on_error is None:
on_error = log.error
devs = pxpcap.PCap.get_devices()
if name not in devs:
on_error("Device %s not available -- ignoring", name)
return
dev = devs[name]
if dev.get('addrs', {}).get('ethernet', {}).get('addr') is None:
on_error("Device %s has no ethernet address -- ignoring", name)
return
if dev.get('addrs', {}).get('AF_INET') != None:
on_error("Device %s has an IP address -- ignoring", name)
return
for no, p in self.px.iteritems():
if p.device == name:
on_error("Device %s already added", name)
if port_no == -1:
while True:
port_no = self._next_port
self._next_port += 1
if port_no not in self.ports: break
if port_no in self.ports:
on_error("Port %s already exists -- ignoring", port_no)
return
phy = of.ofp_phy_port()
phy.port_no = port_no
phy.hw_addr = dev['addrs']['ethernet']['addr']
phy.name = name
# Fill in features sort of arbitrarily
phy.curr = of.OFPPF_10MB_HD
phy.advertised = of.OFPPF_10MB_HD
phy.supported = of.OFPPF_10MB_HD
phy.peer = of.OFPPF_10MB_HD
self.add_port(phy)
px = pxpcap.PCap(name, callback=self._pcap_rx, start=False)
px.port_no = phy.port_no
self.px[phy.port_no] = px
if start:
px.start()
return px
def add_interface(self,
name,
port_no=-1,
on_error=None,
start=False,
virtual=False):
"""
Add an interface
This is usually a PCap interface, unless virtual is set. If virtual
is True, this creates a virtual port which isn't connected to any
channel. If it's a string, it's the channel name.
"""
if self.magic_virtual_port_names:
if name.startswith("@"):
name = name[1:]
virtual = True
if "@" in name:
name, virtual = name.split("@", 1)
if on_error is None:
on_error = log.error
phy = of.ofp_phy_port()
phy.name = name
# Fill in features sort of arbitrarily
phy.curr = of.OFPPF_10MB_HD
phy.advertised = of.OFPPF_10MB_HD
phy.supported = of.OFPPF_10MB_HD
phy.peer = of.OFPPF_10MB_HD
if virtual:
px = VirtualPort(self, phy)
if isinstance(virtual, str):
px.channel = virtual
else:
devs = pxpcap.PCap.get_devices()
if name not in devs:
on_error("Device %s not available -- ignoring", name)
return
dev = devs[name]
if dev.get('addrs', {}).get('ethernet', {}).get('addr') is None:
on_error("Device %s has no ethernet address -- ignoring", name)
return
if dev.get('addrs', {}).get('AF_INET') != None:
on_error("Device %s has an IP address -- ignoring", name)
return
for no, p in self.px.iteritems():
if p.device == name:
on_error("Device %s already added", name)
phy.hw_addr = dev['addrs']['ethernet']['addr']
px = pxpcap.PCap(name, callback=self._pcap_rx, start=False)
if port_no == -1:
while True:
port_no = self._next_port
self._next_port += 1
if port_no not in self.ports: break
if port_no in self.ports:
on_error("Port %s already exists -- ignoring", port_no)
return
phy.port_no = port_no
self.px[phy.port_no] = px
if virtual:
# We create the MAC based on the port_no, so we have to do it here
# and not earlier.
phy.hw_addr = self._gen_ethaddr(phy.port_no)
self.add_port(phy)
if start:
px.start()
return px
