# 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: - One stream sent in directions 0 --> 1. - Packet: ETH / IP / UDP - Direction 0 --> 1: - Source IP address range: 192.168.0.0 - 192.168.3.255 - Destination IP address range: 20.0.0.0 - 20.0.3.255 - Source UDP port range: 1024 - 1086 - Destination UDP port range: 8080 """ 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"192.168.0.0" self.p1_src_end_ip = u"192.168.3.255" self.p1_dst_start_ip = u"20.0.0.0" self.p1_dst_end_ip = u"20.0.3.255" # UDP ports used in packet headers. self.p1_src_start_udp_port = 1024 self.p1_src_end_udp_port = 1086 self.p1_dst_start_udp_port = 8080 self.p1_dst_end_udp_port = 8080 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 ) ) base_pkt_b = ( Ether() ) # Direction 0 --> 1 vm1 = STLVM() vm1.var(name="sIP", min_value=self.p1_src_start_ip, max_value=self.p1_src_end_ip, size=4, op="inc", next_var="sport") vm1.var(name="sport", min_value=self.p1_src_start_udp_port, max_value=self.p1_src_end_udp_port, size=2, op="inc") vm1.var(name="dIP", min_value=self.p1_dst_start_ip, max_value=self.p1_dst_end_ip, size=4, op="inc") vm1.var(name="dport", min_value=self.p1_dst_start_udp_port, max_value=self.p1_dst_end_udp_port, size=2, op="inc") vm1.write(fv_name="sIP", pkt_offset="IP.src") vm1.write(fv_name="sport", pkt_offset="UDP.sport") vm1.write(fv_name="dIP", pkt_offset="IP.dst") vm1.write(fv_name="dport", pkt_offset="UDP.dport") vm1.fix_chksum(offset='IP') vm2 = STLVM() 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()