# Copyright (c) 2020 Cisco and/or its affiliates. # 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. """Stream profile for T-rex traffic generator. Stream profile: - Two streams sent in directions 0 --> 1 and 1 --> 0 at the same time. - Packet: ETH / IP / UDP - Direction 0 --> 1: - Source IP address range: 20.0.0.0 - 20.0.3.231 - Destination IP address range: 12.0.0.2 - Source UDP port range: 1024 - 1038 - Destination UDP port range: 1024 - Direction 1 --> 0: - Source IP address range: 12.0.0.2 - Destination IP address range: 200.0.0.0 - Source UDP port range: 1024 - Destination UDP port range: 1024 - 16023 """ from trex.stl.api import * from profile_trex_stateless_base_class import TrafficStreamsBaseClass class TrafficStreams(TrafficStreamsBaseClass): """Stream profile.""" def __init__(self): """Initialization and setting of streams' parameters.""" super(TrafficStreamsBaseClass, self).__init__() # IPs used in packet headers. self.p1_src_start_ip = u"20.0.0.0" self.p1_src_end_ip = u"20.0.3.231" self.p1_dst_start_ip = u"12.0.0.2" self.p2_src_start_ip = u"12.0.0.2" self.p2_src_end_ip = u"12.0.0.2" self.p2_dst_start_ip = u"200.0.0.0" # UDP ports used in packet headers. self.p1_src_start_udp_port = 1024 self.p1_src_end_udp_port = 1038 self.p1_dst_start_udp_port = 1024 self.p2_src_start_udp_port = 1024 self.p2_dst_start_udp_port = 1024 self.p2_dst_end_udp_port = 16023 def define_packets(self): """Defines the packets to be sent from the traffic generator. Packet definition: | ETH | IP | UDP | :returns: Packets to be sent from the traffic generator. :rtype: tuple """ # Direction 0 --> 1 base_pkt_a = ( Ether() / IP( src=self.p1_src_start_ip, dst=self.p1_dst_start_ip, proto=17 ) / UDP( sport=self.p1_src_start_udp_port, dport=self.p1_dst_start_udp_port ) ) # Direction 1 --> 0 base_pkt_b = ( Ether() / IP( src=self.p2_src_start_ip, dst=self.p2_dst_start_ip, proto=17 ) / UDP( sport=self.p2_src_start_udp_port, dport=self.p2_dst_start_udp_port ) ) # Direction 0 --> 1 vm1 = STLScVmRaw( [ STLVmTupleGen( ip_max=self.p1_src_end_ip, port_min=self.p1_src_start_udp_port, port_max=self.p1_src_end_udp_port, name=u"tuple" ), STLVmWrFlowVar( fv_name=u"tuple.ip", pkt_offset=u"IP.src" ), STLVmFixIpv4(offset=u"IP"), STLVmWrFlowVuar( fv_name=u"tuple.port", pkt_offset=u"UDP.sport" ) ] ) # Direction 0 --> 1 vm2 = STLScVmRaw( [ STLVmFlowVar( name=u"dport", min_value=self.p2_dst_start_udp_port, max_value=self.p2_dst_end_udp_port, size=2, op=u"inc" ), STLVmWrFlowVar( fv_name=u"dport", pkt_offset=u"UDP.dport" ) ] ) return base_pkt_a, base_pkt_b, vm1, vm2 def register(): """Register this traffic profile to T-rex. Do not change this function. :return: Traffic streams. :rtype: Object """ return TrafficStreams()