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+# Copyright (c) 2024 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:
+ - Single parallel bi-directional streams sent as W --> E and E --> W
+ at the same time.
+ - Packet: ETH / IPv6 /
+"""
+
+from trex.stl.api import *
+from profile_trex_stateless_scale_class import TrafficStreamsScaleClass
+
+
+class TrafficStreams(TrafficStreamsScaleClass):
+ """Stream profile."""
+
+ def __init__(self):
+ """Initialization and setting of streams' parameters."""
+
+ super(TrafficStreamsScaleClass, self).__init__()
+
+ self.pkt_data = [
+ # Direction W --> E:
+ {
+ "src_start_ip": "2100::1",
+ "dst_start_ip": "2200::0",
+ "dst_end_ip": "2200::270F"
+ },
+ # Direction E --> W:
+ {
+ "src_start_ip": "2200::1",
+ "dst_start_ip": "2100::0",
+ "dst_end_ip": "2100::270F"
+ }
+ ]
+ self.pkt_base = []
+ self.pkt_vm = []
+
+ 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
+ """
+ for i in range(len(self.pkt_data)):
+ base, count = self._get_start_end_ipv6(
+ self.pkt_data[i]["dst_start_ip"],
+ self.pkt_data[i]["dst_end_ip"]
+ )
+
+ self.pkt_base.append(
+ Ether() /
+ IPv6(
+ src=self.pkt_data[i]["src_start_ip"],
+ dst=self.pkt_data[i]["dst_start_ip"]
+ )
+ )
+ self.pkt_vm.append(
+ STLScVmRaw(
+ [
+ STLVmFlowVar(
+ name="ipv6_dst",
+ min_value=base,
+ max_value=base + count,
+ size=8,
+ op="inc"
+ ),
+ STLVmWrFlowVar(
+ fv_name="ipv6_dst",
+ pkt_offset="IPv6.dst",
+ offset_fixup=8
+ )
+ ]
+ )
+ )
+
+ return self.pkt_base, self.pkt_vm
+
+
+def register():
+ """Register this traffic profile to T-rex.
+
+ Do not change this function.
+
+ :return: Traffic streams.
+ :rtype: Object
+ """
+ return TrafficStreams()