def _generate_config_bpdu(self, flags):
src_mac = self.ofport.hw_addr
dst_mac = bpdu.BRIDGE_GROUP_ADDRESS
length = (bpdu.bpdu._PACK_LEN + bpdu.ConfigurationBPDUs.PACK_LEN
+ llc.llc._PACK_LEN + llc.ControlFormatU._PACK_LEN)
e = ethernet.ethernet(dst_mac, src_mac, length)
l = llc.llc(llc.SAP_BPDU, llc.SAP_BPDU, llc.ControlFormatU())
b = bpdu.ConfigurationBPDUs(
flags=flags,
root_priority=self.port_priority.root_id.priority,
root_mac_address=self.port_priority.root_id.mac_addr,
root_path_cost=self.port_priority.root_path_cost + self.path_cost,
bridge_priority=self.bridge_id.priority,
bridge_mac_address=self.bridge_id.mac_addr,
port_priority=self.port_id.priority,
port_number=self.ofport.port_no,
message_age=self.port_times.message_age + 1,
max_age=self.port_times.max_age,
hello_time=self.port_times.hello_time,
forward_delay=self.port_times.forward_delay)
pkt = packet.Packet()
pkt.add_protocol(e)
pkt.add_protocol(l)
pkt.add_protocol(b)
pkt.serialize()
return pkt.data
def _generate_config_bpdu(self, flags):
src_mac = self.ofport.hw_addr
dst_mac = bpdu.BRIDGE_GROUP_ADDRESS
length = (bpdu.bpdu._PACK_LEN + bpdu.ConfigurationBPDUs.PACK_LEN
+ llc.llc._PACK_LEN + llc.ControlFormatU._PACK_LEN)
e = ethernet.ethernet(dst_mac, src_mac, length)
l = llc.llc(llc.SAP_BPDU, llc.SAP_BPDU, llc.ControlFormatU())
b = bpdu.ConfigurationBPDUs(
flags=flags,
root_priority=self.port_priority.root_id.priority,
root_mac_address=self.port_priority.root_id.mac_addr,
root_path_cost=self.port_priority.root_path_cost + self.path_cost,
bridge_priority=self.bridge_id.priority,
bridge_mac_address=self.bridge_id.mac_addr,
port_priority=self.port_id.priority,
port_number=self.ofport.port_no,
message_age=self.port_times.message_age + 1,
max_age=self.port_times.max_age,
hello_time=self.port_times.hello_time,
forward_delay=self.port_times.forward_delay)
pkt = packet.Packet()
pkt.add_protocol(e)
pkt.add_protocol(l)
pkt.add_protocol(b)
pkt.serialize()
return pkt.data
class Test_ControlFormatI(unittest.TestCase):
msg = llc.llc(llc.SAP_BPDU, llc.SAP_BPDU, llc.ControlFormatI())
def test_json(self):
jsondict = self.msg.to_jsondict()
msg = llc.llc.from_jsondict(jsondict['llc'])
eq_(str(self.msg), str(msg))
def _generate_tcn_bpdu(self):
src_mac = self.ofport.hw_addr
dst_mac = bpdu.BRIDGE_GROUP_ADDRESS
length = (bpdu.bpdu._PACK_LEN
+ bpdu.TopologyChangeNotificationBPDUs.PACK_LEN
+ llc.llc._PACK_LEN + llc.ControlFormatU._PACK_LEN)
e = ethernet.ethernet(dst_mac, src_mac, length)
l = llc.llc(llc.SAP_BPDU, llc.SAP_BPDU, llc.ControlFormatU())
b = bpdu.TopologyChangeNotificationBPDUs()
pkt = packet.Packet()
pkt.add_protocol(e)
pkt.add_protocol(l)
pkt.add_protocol(b)
pkt.serialize()
return pkt.data
def _generate_tcn_bpdu(self):
src_mac = self.ofport.hw_addr
dst_mac = bpdu.BRIDGE_GROUP_ADDRESS
length = (bpdu.bpdu._PACK_LEN
+ bpdu.TopologyChangeNotificationBPDUs.PACK_LEN
+ llc.llc._PACK_LEN + llc.ControlFormatU._PACK_LEN)
e = ethernet.ethernet(dst_mac, src_mac, length)
l = llc.llc(llc.SAP_BPDU, llc.SAP_BPDU, llc.ControlFormatU())
b = bpdu.TopologyChangeNotificationBPDUs()
pkt = packet.Packet()
pkt.add_protocol(e)
pkt.add_protocol(l)
pkt.add_protocol(b)
pkt.serialize()
return pkt.data
class Test_ControlFormatU(Test_ControlFormatI):
msg = llc.llc(llc.SAP_BPDU, llc.SAP_BPDU, llc.ControlFormatU())
def generate_bpdu(self, agreement=False):
if agreement:
b = self.last_prop_bpdu
new_flags = b.flags | FLAG_BIT_AGRMNT
b.flags = new_flags
else:
flags = FLAG_BIT_CLR
## role ##
if (self.role is PORT_ROLE_ALTERNATE) or (self.role is
PORT_ROLE_BACKUP):
flags = flags | FLAG_BIT_ALT_BCK
elif self.role is PORT_ROLE_ROOT:
flags = flags | FLAG_BIT_ROOT
elif self.role is PORT_ROLE_DESIGNATED:
flags = flags | FLAG_BIT_DSG
## tc ##
if self.topo_change:
self.send_event(EventTopologyChange(self.dp))
flags = flags | FLAG_BIT_TC
## Proposal ##
if self.proposing:
flags = flags | FLAG_BIT_PROP
## Forwarding - Learning ##
if self.state is PORT_STATE_LEARNING:
flags = flags | FLAG_BIT_LRNG
if self.state is PORT_STATE_FORWARDING:
flags = flags | FLAG_BIT_FRWD
b = bpdu.RstBPDUs(
flags=flags,
root_priority=self.priority.root_id.priority,
root_mac_address=self.priority.root_id.mac_addr,
root_system_id_extension=self.priority.root_id.
system_id_extension,
root_path_cost=self.priority.root_path_cost,
bridge_priority=self.bridge_id.priority,
bridge_mac_address=self.bridge_id.mac_addr,
bridge_system_id_extension=self.bridge_id.system_id_extension,
port_priority=self.port_id.priority,
port_number=self.ofport.port_no,
message_age=self.bridge_times.message_age,
max_age=self.bridge_times.max_age,
hello_time=self.bridge_times.hello_time,
forward_delay=self.bridge_times.forward_delay)
src_mac = self.ofport.hw_addr
dst_mac = bpdu.BRIDGE_GROUP_ADDRESS
length = (bpdu.bpdu._PACK_LEN + bpdu.ConfigurationBPDUs.PACK_LEN +
bpdu.RstBPDUs.PACK_LEN + llc.llc._PACK_LEN +
llc.ControlFormatU._PACK_LEN)
e = ethernet.ethernet(dst_mac, src_mac, length)
l = llc.llc(llc.SAP_BPDU, llc.SAP_BPDU, llc.ControlFormatU())
pkt = packet.Packet()
pkt.add_protocol(e)
pkt.add_protocol(l)
pkt.add_protocol(b)
pkt.serialize()
return pkt.data
