# 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. - Direction 0 --> 1: - Packet: ETH / IPv6 / - Source IP address range: 2001:1::2 - 2001:1::FE - Destination IP address range: 2001:2::2 - Direction 1 --> 0: - Packet: ETH / DOT1Q / IPv6 / - Source IP address range: 2001:2::2 - 2001:2::FE - Destination IP address range: 2001:1::2 """ 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 ID self.vlan_id = 10 # IPs used in packet headers. self.p1_src_start_ip = u"2001:1::2" self.p1_src_end_ip = u"2001:1::FE" self.p1_dst_start_ip = u"2001:2::2" self.p2_src_start_ip = u"2001:2::2" self.p2_src_end_ip = u"2001:2::FE" self.p2_dst_start_ip = u"2001:1::2" def define_packets(self): """Defines the packets to be sent from the traffic generator. Packet definition: | ETH | IPv6 | :returns: Packets to be sent from the traffic generator. :rtype: tuple """ base_p1, count_p1 = self._get_start_end_ipv6( self.p1_src_start_ip, self.p1_src_end_ip ) base_p2, count_p2 = self._get_start_end_ipv6( self.p2_src_start_ip, self.p2_src_end_ip ) # Direction 0 --> 1 base_pkt_a = ( Ether() / IPv6( src=self.p1_src_start_ip, dst=self.p1_dst_start_ip ) ) # Direction 1 --> 0 base_pkt_b = ( Ether() / Dot1Q( vlan=self.vlan_id ) / IPv6( src=self.p2_src_start_ip, dst=self.p2_dst_start_ip ) ) # Direction 0 --> 1 vm1 = STLScVmRaw( [ STLVmFlowVar( name=u"ipv6_src", min_value=base_p1, max_value=base_p1 + count_p1, size=8, op=u"inc" ), STLVmWrFlowVar( fv_name=u"ipv6_src", pkt_offset=u"IPv6.src", offset_fixup=8 ) ] ) # Direction 1 --> 0 vm2 = STLScVmRaw( [ STLVmFlowVar( name=u"ipv6_src", min_value=base_p2, max_value=base_p2 + count_p2, size=8, op=u"inc" ), STLVmWrFlowVar( fv_name=u"ipv6_src", pkt_offset=u"IPv6.src", offset_fixup=8 ) ] ) 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()