# Copyright (c) 2021 Cisco and/or its affiliates. # # SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later # # Licensed under the Apache License 2.0 or # GNU General Public License v2.0 or later; you may not use this file # except in compliance with one of these Licenses. You # may obtain a copy of the Licenses at: # # http://www.apache.org/licenses/LICENSE-2.0 # https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html # # Note: If this file is linked with Scapy, which is GPLv2+, your use of it # must be under GPLv2+. If at any point in the future it is no longer linked # with Scapy (or other GPLv2+ licensed software), you are free to choose # Apache 2. # # 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 - Source UDP port: random([1024-65535]) - Destination UDP port: 4789 - VXLAN VNI: 0 - Payload source MAC address: 00:aa:aa:00:00:[00..ff] - Payload source IP address: 10.0.0.2 - Payload destination MAC address: 00:bb:bb:00:00:[00..ff] - 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 - Source UDP port: random([1024-65535]) - Destination UDP port: 4789 - VXLAN VNI: 0 - Payload source MAC address: 00:bb:bb:00:00:[00..ff] - Payload source IP address: 10.0.0.1 - Payload destination MAC address: 00:aa:aa:00:00:[00..ff] - 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(u"R"*24 + u"RRRIRRRRR") class VXLAN(Packet): name=u"VXLAN" fields_desc = [ FlagsField(u"flags", 0x08000000, 32, _VXLAN_FLAGS), ThreeBytesField(u"vni", 0), XByteField(u"reserved", 0x00) ] def mysummary(self): return self.sprintf(u"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__() self.nf_chains = 1 def define_packets(self): """Defines the packets to be sent from the traffic generator. Packet definition: | ETH | IP | VXLAN | ETH | IP :returns: Packets to be sent from the traffic generator. :rtype: tuple """ # Direction 0 --> 1 base_pkt_a = ( Ether()/ IP( src=u"172.17.0.2", dst=u"172.16.0.1" )/ UDP( sport=1024, dport=4789)/ VXLAN( vni=0 )/ Ether( src=u"00:aa:aa:00:00:00", dst=u"00:bb:bb:00:00:00" )/ IP( src=u"10.0.0.2", dst=u"10.0.0.1", proto=61 ) ) # Direction 1 --> 0 base_pkt_b = ( Ether()/ IP( src=u"172.27.0.2", dst=u"172.26.0.1" )/ UDP( sport=1024, dport=4789 )/ VXLAN( vni=0 )/ Ether( src=u"00:bb:bb:00:00:00", dst=u"00:aa:aa:00:00:00" )/ IP( src=u"10.0.0.1", dst=u"10.0.0.2", proto=61 ) ) # Direction 0 --> 1 vm1 = STLScVmRaw( [ STLVmFlowVar( name=u"nf_id", size=1, op=u"inc", min_value=0, max_value=self.nf_chains - 1 ), STLVmFlowVar( name=u"in_mac", size=2, op=u"inc", min_value=0, max_value=255 ), STLVmFlowVar( name=u"in_ip", size=1, op=u"inc", min_value=0, max_value=255 ), STLVmFlowVar( name=u"src_port", size=2, op=u"random", min_value=1024, max_value=65535 ), STLVmWrFlowVar( fv_name=u"nf_id", pkt_offset=28 ), STLVmWrFlowVar( fv_name=u"src_port", pkt_offset=u"UDP.sport" ), STLVmWrFlowVar( fv_name=u"nf_id", pkt_offset=48 ), STLVmWrFlowVar( fv_name=u"in_mac", pkt_offset=54 ), STLVmWrFlowVar( fv_name=u"in_mac", pkt_offset=60 ), STLVmFixChecksumHw( l3_offset="IP:{}".format(0), l4_offset="UDP:{}".format(0), l4_type=CTRexVmInsFixHwCs.L4_TYPE_UDP ) ] ) # Direction 1 --> 0 vm2 = STLScVmRaw( [ STLVmFlowVar( name=u"nf_id", size=1, op=u"inc", min_value=0, max_value=self.nf_chains - 1 ), STLVmFlowVar( name=u"in_mac", size=2, op=u"inc", min_value=0, max_value=255 ), STLVmFlowVar( name=u"in_ip", size=1, op=u"inc", min_value=0, max_value=255 ), STLVmFlowVar( name=u"src_port", size=2, op=u"random", min_value=1024, max_value=65535 ), STLVmWrFlowVar( fv_name=u"nf_id", pkt_offset=28 ), STLVmWrFlowVar( fv_name=u"src_port", pkt_offset=u"UDP.sport" ), STLVmWrFlowVar( fv_name=u"nf_id", pkt_offset=48 ), STLVmWrFlowVar( fv_name=u"in_mac", pkt_offset=54 ), STLVmWrFlowVar( fv_name=u"in_mac", pkt_offset=60 ), STLVmFixChecksumHw( l3_offset="IP:{}".format(0), l4_offset="UDP:{}".format(0), l4_type=CTRexVmInsFixHwCs.L4_TYPE_UDP ) ] ) 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()