| # |
| # Copyright 2019 the original author or authors. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| import threading |
| from google.protobuf.json_format import Parse |
| from simplejson import loads |
| import structlog |
| from scapy.layers.l2 import Ether, Dot1Q |
| import binascii |
| from scapy.layers.l2 import Packet |
| |
| from common.frameio.frameio import hexify |
| from voltha.protos.openflow_13_pb2 import PacketOut |
| from voltha.adapters.openolt.openolt_kafka_consumer import KConsumer |
| from voltha.core.flow_decomposer import OUTPUT |
| from voltha.protos.device_pb2 import Port |
| from voltha.adapters.openolt.protos import openolt_pb2 |
| |
| |
| class OpenoltPacket(object): |
| def __init__(self, device): |
| self.log = structlog.get_logger() |
| self.device = device |
| |
| self.packet_out_thread_handle = threading.Thread( |
| target=self.packet_out_thread) |
| self.packet_out_thread_handle.setDaemon(True) |
| |
| self.packet_in_thread_handle = threading.Thread( |
| target=self.packet_in_thread) |
| self.packet_in_thread_handle.setDaemon(True) |
| |
| def start(self): |
| self.packet_out_thread_handle.start() |
| self.packet_in_thread_handle.start() |
| |
| def stop(self): |
| pass |
| |
| def packet_out_thread(self): |
| self.log.debug('openolt packet-out thread starting') |
| KConsumer(self.packet_out_process, |
| 'voltha.pktout-{}'.format( |
| self.device.data_model.logical_device_id)) |
| |
| def packet_in_thread(self): |
| self.log.debug('openolt packet-in thread starting') |
| topic = 'openolt.pktin-{}'.format( |
| self.device.host_and_port.split(':')[0]) |
| KConsumer(self.packet_in_process, topic) |
| |
| def packet_out_process(self, topic, msg): |
| |
| def get_port_out(opo): |
| for action in opo.actions: |
| if action.type == OUTPUT: |
| return action.output.port |
| |
| pb = Parse(loads(msg), PacketOut(), ignore_unknown_fields=True) |
| |
| logical_device_id = pb.id |
| ofp_packet_out = pb.packet_out |
| |
| self.log.debug("received packet-out form kafka", |
| logical_device_id=logical_device_id, |
| ofp_packet_out=ofp_packet_out) |
| |
| egress_port = get_port_out(ofp_packet_out) |
| msg = ofp_packet_out.data |
| |
| self.log.debug('rcv-packet-out', logical_device_id=logical_device_id, |
| egress_port=egress_port, |
| # adapter_name=self.adapter_name, |
| data=hexify(msg)) |
| |
| pkt = Ether(msg) |
| self.log.debug('packet out', egress_port=egress_port, |
| packet=str(pkt).encode("HEX")) |
| |
| # Find port type |
| egress_port_type = self.device.platform \ |
| .intf_id_to_port_type_name(egress_port) |
| |
| if egress_port_type == Port.ETHERNET_UNI: |
| |
| if pkt.haslayer(Dot1Q): |
| outer_shim = pkt.getlayer(Dot1Q) |
| if isinstance(outer_shim.payload, Dot1Q): |
| # If double tag, remove the outer tag |
| payload = ( |
| Ether(src=pkt.src, dst=pkt.dst, |
| type=outer_shim.type) / |
| outer_shim.payload |
| ) |
| else: |
| payload = pkt |
| else: |
| payload = pkt |
| |
| send_pkt = binascii.unhexlify(str(payload).encode("HEX")) |
| |
| self.log.debug( |
| 'sending-packet-to-ONU', egress_port=egress_port, |
| intf_id=self.device.platform.intf_id_from_uni_port_num( |
| egress_port), |
| onu_id=self.device.platform.onu_id_from_port_num(egress_port), |
| uni_id=self.device.platform.uni_id_from_port_num(egress_port), |
| port_no=egress_port, |
| packet=str(payload).encode("HEX")) |
| |
| onu_pkt = openolt_pb2.OnuPacket( |
| intf_id=self.device.platform.intf_id_from_uni_port_num( |
| egress_port), |
| onu_id=self.device.platform.onu_id_from_port_num(egress_port), |
| port_no=egress_port, |
| pkt=send_pkt) |
| |
| self.device.stub.OnuPacketOut(onu_pkt) |
| |
| elif egress_port_type == Port.ETHERNET_NNI: |
| self.log.debug('sending-packet-to-uplink', egress_port=egress_port, |
| packet=str(pkt).encode("HEX")) |
| |
| send_pkt = binascii.unhexlify(str(pkt).encode("HEX")) |
| |
| uplink_pkt = openolt_pb2.UplinkPacket( |
| intf_id=self.device.platform.intf_id_from_nni_port_num( |
| egress_port), |
| pkt=send_pkt) |
| |
| self.device.stub.UplinkPacketOut(uplink_pkt) |
| |
| else: |
| self.log.warn('Packet-out-to-this-interface-type-not-implemented', |
| egress_port=egress_port, |
| port_type=egress_port_type) |
| |
| def packet_in_process(self, topic, msg): |
| |
| ind = Parse(loads(msg), openolt_pb2.Indication(), |
| ignore_unknown_fields=True) |
| assert(ind.HasField('pkt_ind')) |
| pkt_ind = ind.pkt_ind |
| |
| self.log.debug("packet indication", |
| intf_type=pkt_ind.intf_type, |
| intf_id=pkt_ind.intf_id, |
| port_no=pkt_ind.port_no, |
| cookie=pkt_ind.cookie, |
| gemport_id=pkt_ind.gemport_id, |
| flow_id=pkt_ind.flow_id) |
| try: |
| logical_port_num = self.device.data_model.logical_port_num( |
| pkt_ind.intf_type, |
| pkt_ind.intf_id, |
| pkt_ind.port_no, |
| pkt_ind.gemport_id) |
| except ValueError: |
| self.log.error('No logical port found', |
| intf_type=pkt_ind.intf_type, |
| intf_id=pkt_ind.intf_id, |
| port_no=pkt_ind.port_no, |
| gemport_id=pkt_ind.gemport_id) |
| return |
| |
| ether_pkt = Ether(pkt_ind.pkt) |
| |
| if isinstance(ether_pkt, Packet): |
| ether_pkt = str(ether_pkt) |
| |
| logical_device_id = self.device.data_model.logical_device_id |
| topic = 'packet-in:' + logical_device_id |
| |
| self.log.debug('send-packet-in', logical_device_id=logical_device_id, |
| logical_port_num=logical_port_num, |
| packet=hexify(ether_pkt)) |
| |
| self.device.data_model.adapter_agent.event_bus.publish( |
| topic, (logical_port_num, str(ether_pkt))) |