# Copyright (c) 2020 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 / - Direction 0 --> 1: - Destination MAC address: 52:54:00:00:nf_id:01 - Source IP address range: 10.10.10.1 - 10.10.10.254 - Destination IP address range: 20.20.20.1 - Direction 1 --> 0: - Destination MAC address: 52:54:00:00:nf_id:02 - Source IP address range: 20.20.20.1 - 20.20.20.254 - Destination IP address range: 10.10.10.1 """ 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__() # Service density parameters. self.nf_chains = 4 self.nf_nodes = 4 # MACs used in packet headers. self.p1_dst_start_mac = u"52:54:00:00:00:01" self.p2_dst_start_mac = u"52:54:00:00:00:02" # IPs used in packet headers. self.p1_src_start_ip = u"10.10.10.1" self.p1_src_end_ip = u"10.10.10.254" self.p1_dst_start_ip = u"20.20.20.1" self.p2_src_start_ip = u"20.20.20.1" self.p2_src_end_ip = u"20.20.20.254" self.p2_dst_start_ip = u"10.10.10.1" 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( dst=self.p1_dst_start_mac ) / IP( src=self.p1_src_start_ip, dst=self.p1_dst_start_ip, proto=61 ) ) # Direction 1 --> 0 base_pkt_b = ( Ether( dst=self.p2_dst_start_mac ) / IP( src=self.p2_src_start_ip, dst=self.p2_dst_start_ip, proto=61 ) ) # Direction 0 --> 1 vm1 = STLScVmRaw( [ STLVmFlowVar( name=u"mac_dst", min_value=1, max_value=self.nf_chains*self.nf_nodes, size=1, step=self.nf_nodes, op=u"inc" ), STLVmWrFlowVar( fv_name=u"mac_dst", pkt_offset=4 ), STLVmFlowVar( name=u"src", min_value=self.p1_src_start_ip, max_value=self.p1_src_end_ip, size=4, op=u"inc" ), STLVmWrFlowVar( fv_name=u"src", pkt_offset=u"IP.src" ), STLVmFixIpv4( offset=u"IP" ) ] ) # Direction 1 --> 0 vm2 = STLScVmRaw( [ STLVmFlowVar( name=u"mac_dst", min_value=self.nf_nodes, max_value=self.nf_chains*self.nf_nodes, size=1, step=self.nf_nodes, op=u"inc" ), STLVmWrFlowVar( fv_name=u"mac_dst", pkt_offset=4 ), STLVmFlowVar( name=u"src", min_value=self.p2_src_start_ip, max_value=self.p2_src_end_ip, size=4, op=u"inc" ), STLVmWrFlowVar( fv_name=u"src", pkt_offset=u"IP.src" ), 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. :return: Traffic streams. :rtype: Object """ return TrafficStreams()