def switch_feature_handler(self, event):
dpid = event.msg.datapath_id
try:
switch = self.dpid_to_switch[dpid]
except KeyError:
self.dpid_to_switch[dpid] = Switch(event.msg.datapath)
switch = self.dpid_to_switch[dpid]
for port_no, port in event.msg.ports.iteritems():
if port_no not in switch.ports:
p = Port(port = port, dp = event.msg.datapath)
switch.ports[port_no] = p
p = switch.ports[port_no]
if port_no == ofproto_v1_0.OFPP_LOCAL:
switch.name = port.name.rstrip('\x00')
else:
# port.curr is a number of 32 bits, only used 12 bits in ovs
# represents current features of the port.
# LOCAL port doesn't have a cost value
curr = port.curr & 0x7f # get last 7 bits
p.cost = 64/curr
print 'cost:', p.cost
switch.update_from_config(self.switch_cfg)
self.routing_algo.topology_last_update = time.time()
def switch_feature_handler(self, event):
dpid = event.msg.datapath_id
try:
switch = self.dpid_to_switch[dpid]
except KeyError:
self.dpid_to_switch[dpid] = Switch(event.msg.datapath)
switch = self.dpid_to_switch[dpid]
for port_no, port in event.msg.ports.iteritems():
if port_no not in switch.ports:
p = Port(port=port, dp=event.msg.datapath)
switch.ports[port_no] = p
p = switch.ports[port_no]
if port_no == ofproto_v1_0.OFPP_LOCAL:
switch.name = port.name.rstrip('\x00')
else:
# port.curr is a number of 32 bits, only used 12 bits in ovs
# represents current features of the port.
# LOCAL port doesn't have a cost value
curr = port.curr & 0x7f # get last 7 bits
p.cost = 64 / curr
print 'cost:', p.cost
switch.update_from_config(self.switch_cfg)
self.routing_algo.topology_last_update = time.time()
def add_link(self, event):
'''
Adds a link from port to to port
'''
src_port = Port(port=event.link.src,
peer=event.link.dst,
is_edge=False)
dst_port = Port(port=event.link.dst,
peer=event.link.src,
is_edge=False)
self._update_port_link(src_port.dpid, src_port)
self._update_port_link(dst_port.dpid, dst_port)
self.pathfindinding_algo.topology_last_update = time.time()
def port_delete_handler(self, event):
port = Port(event.port)
try:
switch = self.dpid_to_switch[port.dpid]
del switch.ports[port.port_no]
self.routing_algo.topology_last_update = time.time()
except KeyError:
pass
def add_port(self, port):
'''
Adds a port to the topology
'''
port = Port(port)
switch = self.dpid_to_switch[port.dpid]
switch.ports[port.port_no] = port
self.pathfindinding_algo.topology_last_update = time.time()
def remove_port(self, port):
'''
Removes a switch to the topology
'''
port = Port(port)
try:
switch = self.dpid_to_switch[port.dpid]
del switch.ports[port.port_no]
self.pathfindinding_algo.topology_last_update = time.time()
except KeyError:
return
def port_add_handler(self, event):
port = Port(event.port)
switch = self.dpid_to_switch[port.dpid]
switch.ports[port.port_no] = port
switch.update_from_config(self.switch_cfg)
self.routing_algo.topology_last_update = time.time()
def link_add_handler(self, event):
src_port = Port(port=event.link.src, peer=event.link.dst)
dst_port = Port(port=event.link.dst, peer=event.link.src)
self._update_port_link(src_port.dpid, src_port)
self._update_port_link(dst_port.dpid, dst_port)
self.routing_algo.topology_last_update = time.time()