# Copyright (c) 2019 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 / VXLAN / ETH / IP - Direction 0 --> 1: - Source IP address: 172.17.0.2 - Destination IP address: 172.16.0.1 - VXLAN VNI: 24 - Payload source MAC address: 00:de:ad:00:00:00 - Payload source IP address: 10.0.0.2 - Payload destination MAC address: 00:de:ad:00:00:01 - Payload destination IP address: 10.0.0.1 - Direction 1 --> 0: - Source IP address: 172.27.0.2 - Destination IP address: 172.26.0.1 - VXLAN VNI: 24 - Payload source MAC address: 00:de:ad:00:00:01 - Payload source IP address: 10.0.0.1 - Payload destination MAC address: 00:de:ad:00:00:00 - Payload destination IP address: 10.0.0.2 """ from trex.stl.api import * from profile_trex_stateless_base_class import TrafficStreamsBaseClass # RFC 7348 - Virtual eXtensible Local Area Network (VXLAN): # A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks # http://tools.ietf.org/html/rfc7348 _VXLAN_FLAGS = list('R'*24 + "RRRIRRRRR") class VXLAN(Packet): name = "VXLAN" fields_desc = [FlagsField("flags", 0x08000000, 32, _VXLAN_FLAGS), ThreeBytesField("vni", 0), XByteField("reserved", 0x00)] def mysummary(self): return self.sprintf("VXLAN (vni=%VXLAN.vni%)") bind_layers(UDP, VXLAN, dport=4789) bind_layers(VXLAN, Ether) class TrafficStreams(TrafficStreamsBaseClass): """Stream profile.""" def __init__(self): """Initialization and setting of streams' parameters.""" super(TrafficStreamsBaseClass, self).__init__() def define_packets(self): """Defines the packets to be sent from the traffic generator. Packet definition: | ETH | IP | :returns: Packets to be sent from the traffic generator. :rtype: tuple """ # Direction 0 --> 1 base_pkt_a = ( Ether()/ IP(src="172.17.0.2",dst="172.16.0.1")/ UDP(sport=1337,dport=4789)/ VXLAN(vni=24)/ Ether(src="00:de:ad:00:00:00",dst="00:de:ad:00:00:01")/ IP(src="10.0.0.2",dst="10.0.0.1")) # Direction 1 --> 0 base_pkt_b = ( Ether()/ IP(src="172.27.0.2",dst="172.26.0.1")/ UDP(sport=1337,dport=4789)/ VXLAN(vni=24)/ Ether(src="00:de:ad:00:00:01",dst="00:de:ad:00:00:00")/ IP(src="10.0.0.1",dst="10.0.0.2")) # Direction 0 --> 1 vm1 = STLScVmRaw([ STLVmFlowVar(name="src", min_value="172.17.0.2" , max_value="172.17.0.254", size=4, op="inc"), STLVmFlowVar(name="src_mac", min_value=2 , max_value=3100, size=2, op="inc"), STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"), STLVmWrFlowVar(fv_name="src_mac", pkt_offset=60), STLVmFixIpv4(offset = "IP") ]) # Direction 1 --> 0 vm2 = STLScVmRaw([ STLVmFlowVar(name="src", min_value="172.27.0.2" , max_value="172.27.0.254", size=4, op="inc"), STLVmFlowVar(name="src_mac", min_value=2 , max_value=3100, size=2, op="inc"), STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"), STLVmWrFlowVar(fv_name="src_mac", pkt_offset=60), STLVmFixIpv4(offset = "IP") ]) # for now there's a single VXLAN tunnel per direction, the above # variations are for reference only vm1, vm2 = [], [] 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()