--- /dev/null
+# 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 / IP
+ - Source IP address range: 10.128.1.0 - 10.132.0.255
+ - Destination IP address range: 10.0.1.0 - 10.4.0.255
+ - Direction 1 --> 0:
+ - Packet: ETH / IP / UDP / GENEVE / ETH / IP
+ - Outer Source IP address range: 1.1.1.1
+ - Outer Destination IP address range: 1.1.1.2
+ - Inner Source IP address range: 10.0.1.0 - 10.4.0.255
+ - Inner Destination IP address range: 10.128.1.0 - 10.132.0.255
+ - Source UDP port range: 1024 - 65535
+ - Destination UDP port range: 6081
+"""
+
+from ctypes import c_int
+from ipaddress import IPv4Address
+
+from trex.stl.api import *
+from scapy.contrib.geneve import GENEVE
+
+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__()
+
+ # Nr. of GENEVE tunnels
+ self.n_tunnels = 1024
+ # VNIs used in GENEVE headers of Direction 1 --> 0.
+ self.p2_geneve_start_vni = 1
+
+ # IPs used in packet headers of Direction 0 --> 1.
+ self.p1_src_start_ip = u"10.128.1.0"
+ self.p1_dst_start_ip = u"10.0.1.0"
+
+ # IPs used in packet headers of Direction 1 --> 0.
+ self.p2_outer_src_ip = u"1.1.1.1"
+ self.p2_outer_dst_ip = u"1.1.1.2"
+
+ self.p2_inner_src_start_ip = u"10.0.1.0"
+ self.p2_inner_dst_start_ip = u"10.128.1.0"
+
+ # MACs used in inner ethernet header of Direction 1 --> 0.
+ self.p2_inner_dst_mac = u"d0:0b:ee:d0:00:00"
+
+ # UDP ports used in packet headers of Direction 1 --> 0.
+ self.p2_udp_sport_start = 1024
+ self.p2_udp_dport = 6081
+
+ def define_packets(self):
+ """Defines the packets to be sent from the traffic generator.
+
+ Packet definition: | ETH | IP | UDP |
+
+ :returns: Packets to be sent from the traffic generator.
+ :rtype: tuple
+ """
+ p1_src_start_ip_int = int(IPv4Address(self.p1_src_start_ip))
+ p1_dst_start_ip_int = int(IPv4Address(self.p1_dst_start_ip))
+ p2_inner_src_start_ip_int = int(IPv4Address(self.p2_inner_src_start_ip))
+ p2_inner_dst_start_ip_int = int(IPv4Address(self.p2_inner_dst_start_ip))
+
+ # Direction 0 --> 1
+ base_pkt_a = (
+ Ether() /
+ IP(
+ src=self.p1_src_start_ip,
+ dst=self.p1_dst_start_ip,
+ proto=61
+ )
+ )
+ # Direction 1 --> 0
+ base_pkt_b = (
+ Ether() /
+ IP(
+ src=self.p2_outer_src_ip,
+ dst=self.p2_outer_dst_ip,
+ proto=17
+ ) /
+ UDP(
+ sport=self.p2_udp_sport_start,
+ dport=self.p2_udp_dport
+ ) /
+ GENEVE(vni=self.p2_geneve_start_vni) /
+ Ether(dst=self.p2_inner_dst_mac) /
+ IP(
+ src=self.p2_inner_src_start_ip,
+ dst=self.p2_inner_dst_start_ip,
+ proto=61
+ )
+ )
+ base_pkt_b /= Raw(load=self._gen_payload(110 - len(base_pkt_b)))
+ # Direction 0 --> 1
+ vm1 = STLScVmRaw(
+ [
+ STLVmFlowVar(
+ name=u"ip_src",
+ min_value=p1_src_start_ip_int,
+ max_value=p1_src_start_ip_int + self.n_tunnels * 256 - 1,
+ size=4,
+ op=u"inc"
+ ),
+ STLVmWrFlowVar(
+ fv_name=u"ip_src",
+ pkt_offset=u"IP.src"
+ ),
+ STLVmFlowVar(
+ name=u"ip_dst",
+ min_value=p1_dst_start_ip_int,
+ max_value=p1_dst_start_ip_int + self.n_tunnels * 256 - 1,
+ size=4,
+ op=u"inc"
+ ),
+ STLVmWrFlowVar(
+ fv_name=u"ip_dst",
+ pkt_offset=u"IP.dst"
+ ),
+ STLVmFixIpv4(
+ offset=u"IP"
+ )
+ ]
+ )
+ # Direction 1 --> 0
+ vm2 = STLScVmRaw(
+ [
+ STLVmFlowVar(
+ name=u"ip",
+ min_value=0,
+ max_value=self.n_tunnels * 256 - 1,
+ size=4,
+ op=u"inc"
+ ),
+ STLVmWrMaskFlowVar(
+ fv_name=u"ip",
+ pkt_cast_size=4,
+ mask=0xffffffff,
+ add_value=p2_inner_src_start_ip_int,
+ pkt_offset=u"IP:1.src"
+ ),
+ STLVmWrMaskFlowVar(
+ fv_name=u"ip",
+ pkt_cast_size=4,
+ mask=0xffffffff,
+ add_value=p2_inner_dst_start_ip_int,
+ pkt_offset=u"IP:1.dst"
+ ),
+ STLVmWrMaskFlowVar(
+ fv_name=u"ip",
+ pkt_cast_size=2,
+ mask=0xffff,
+ add_value=self.p2_udp_sport_start,
+ pkt_offset=u"UDP.sport"
+ ),
+ STLVmWrMaskFlowVar(
+ fv_name=u"ip",
+ pkt_cast_size=4,
+ mask=0xffffff00,
+ add_value=(self.p2_geneve_start_vni << 8),
+ pkt_offset=u"GENEVE.vni"
+ ),
+ STLVmWrMaskFlowVar(
+ fv_name=u"ip",
+ pkt_cast_size=4,
+ mask=0xffffff,
+ shift=-8,
+ offset_fixup=2,
+ add_value=c_int(
+ int(
+ self.p2_inner_dst_mac.replace(u":", u"")[6:12], 16
+ ) << 8
+ ).value,
+ pkt_offset=u"Ether:1.dst"
+ ),
+ STLVmFixIpv4(
+ offset=u"IP:1"
+ ),
+ STLVmFixIpv4(
+ offset=u"IP"
+ ),
+ STLVmFixChecksumHw(
+ l3_offset=u"IP",
+ l4_offset=u"UDP",
+ 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()
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