# 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 / DOT1Q / IP / - Direction 0 --> 1: - VLAN range: 1 - Source IP address range: 10.0.0.1 - 10.0.0.254 - Destination IP address range: 20.0.0.1 - 20.0.0.254 - Direction 1 --> 0: - VLAN range: 1 - Source IP address range: 20.0.0.1 - 20.0.0.254 - Destination IP address range: 10.0.0.1 - 10.0.0.254 """ 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__() # VLAN IDs self.p1_vlan_start = 1 self.p2_vlan_start = 1 # IPs used in packet headers. self.p1_src_start_ip = u"10.0.0.1" self.p1_src_end_ip = u"10.0.0.254" self.p1_dst_start_ip = u"20.0.0.1" self.p1_dst_end_ip = u"20.0.0.254" self.p2_src_start_ip = u"20.0.0.1" self.p2_src_end_ip = u"20.0.0.254" self.p2_dst_start_ip = u"10.0.0.1" self.p2_dst_end_ip = u"10.0.0.254" def define_packets(self): """Defines the packets to be sent from the traffic generator. Packet definition: | ETH | DOT1Q | IP | :returns: Packets to be sent from the traffic generator. :rtype: tuple """ # Direction 0 --> 1 base_pkt_a = ( Ether() / Dot1Q( vlan=self.p1_vlan_start ) / IP( src=self.p1_src_start_ip, dst=self.p1_dst_start_ip, proto=61 ) ) # Direction 1 --> 0 base_pkt_b = ( Ether() / Dot1Q( vlan=self.p2_vlan_start ) / IP( src=self.p2_src_start_ip, dst=self.p2_dst_start_ip, proto=61 ) ) # Direction 0 --> 1 vm1 = STLScVmRaw( [ STLVmFlowVar( name=u"ip_src", min_value=self.p1_src_start_ip, max_value=self.p1_src_end_ip, size=4, op=u"random" ), STLVmWrFlowVar( fv_name=u"ip_src", pkt_offset=u"IP.src" ), STLVmFlowVar( name=u"ip_dst", min_value=self.p1_dst_start_ip, max_value=self.p1_dst_end_ip, size=4, op=u"random" ), STLVmWrFlowVar( fv_name=u"ip_dst", pkt_offset=u"IP.dst" ), STLVmFixIpv4( offset=u"IP" ) ] ) # Direction 1 --> 0 vm2 = STLScVmRaw( [ STLVmFlowVar( name=u"ip_src", min_value=self.p2_src_start_ip, max_value=self.p2_src_end_ip, size=4, op=u"random" ), STLVmWrFlowVar( fv_name=u"ip_src", pkt_offset=u"IP.src" ), STLVmFlowVar( name=u"ip_dst", min_value=self.p2_dst_start_ip, max_value=self.p2_dst_end_ip, size=4, op=u"random" ), STLVmWrFlowVar( fv_name=u"ip_dst", pkt_offset=u"IP.dst" ), STLVmFixIpv4( offset=u"IP" ) ] ) return base_pkt_a, base_pkt_b, vm1, vm2 def register(): """Register this traffic profile to T-rex. Do not change this function. :returns: Traffic streams. :rtype: Object """ return TrafficStreams()