trex-sl-3n-ethip4-ip4dst20000-2cnf.py revision f7519a18
1# Copyright (c) 2020 Cisco and/or its affiliates.
2# Licensed under the Apache License, Version 2.0 (the "License");
3# you may not use this file except in compliance with the License.
4# You may obtain a copy of the License at:
5#
6#     http://www.apache.org/licenses/LICENSE-2.0
7#
8# Unless required by applicable law or agreed to in writing, software
9# distributed under the License is distributed on an "AS IS" BASIS,
10# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11# See the License for the specific language governing permissions and
12# limitations under the License.
13
14"""Stream profile for T-rex traffic generator.
15
16Stream profile:
17 - Two streams sent in directions 0 --> 1 and 1 --> 0 at the same time.
18 - Packet: ETH / IP /
19 - Direction 0 --> 1:
20   - Source IP address range:      10.0.0.1
21   - Destination IP address range: 20.0.0.0 - 20.0.78.31
22 - Direction 1 --> 0:
23   - Source IP address range:      20.0.0.1
24   - Destination IP address range: 10.0.0.0 - 10.0.78.31
25"""
26
27from trex.stl.api import *
28from profile_trex_stateless_base_class import TrafficStreamsBaseClass
29
30
31class TrafficStreams(TrafficStreamsBaseClass):
32    """Stream profile."""
33
34    def __init__(self):
35        """Initialization and setting of streams' parameters."""
36
37        super(TrafficStreamsBaseClass, self).__init__()
38
39        self.p1_dst_start_mac = u"02:02:00:00:12:00"
40
41        self.p2_dst_start_mac = u"02:02:00:00:02:00"
42
43        # IPs used in packet headers.
44        self.p1_src_start_ip = u"10.0.0.1"
45        self.p1_dst_start_ip = u"20.0.0.0"
46        self.p1_dst_end_ip = u"20.0.78.31"
47
48        self.p2_src_start_ip = u"20.0.0.1"
49        self.p2_dst_start_ip = u"10.0.0.0"
50        self.p2_dst_end_ip = u"10.0.78.31"
51
52    def define_packets(self):
53        """Defines the packets to be sent from the traffic generator.
54
55        Packet definition: | ETH | IP |
56
57        :returns: Packets to be sent from the traffic generator.
58        :rtype: tuple
59        """
60
61        # Direction 0 --> 1
62        base_pkt_a = (
63            Ether(
64                dst=self.p1_dst_start_mac
65            ) /
66            IP(
67                src=self.p1_src_start_ip,
68                dst=self.p1_dst_start_ip,
69                proto=61
70            )
71        )
72        # Direction 1 --> 0
73        base_pkt_b = (
74            Ether(
75                dst=self.p2_dst_start_mac
76            ) /
77            IP(
78                src=self.p2_src_start_ip,
79                dst=self.p2_dst_start_ip,
80                proto=61
81            )
82        )
83
84        # Direction 0 --> 1
85        vm1 = STLScVmRaw(
86            [
87                STLVmFlowVar(
88                    name=u"mac_dst",
89                    min_value=0,
90                    max_value=1,
91                    size=1,
92                    op=u"inc"
93                ),
94                STLVmFlowVar(
95                    name=u"dst",
96                    min_value=self.p1_dst_start_ip,
97                    max_value=self.p1_dst_end_ip,
98                    size=4,
99                    op=u"inc"
100                ),
101                STLVmWrFlowVar(
102                    fv_name=u"dst",
103                    pkt_offset=u"IP.dst"
104                ),
105                STLVmFixIpv4(
106                    offset=u"IP"
107                )
108            ]
109        )
110        # Direction 1 --> 0
111        vm2 = STLScVmRaw(
112            [
113                STLVmFlowVar(
114                    name=u"mac_dst",
115                    min_value=0,
116                    max_value=1,
117                    size=1,
118                    op=u"inc"
119                ),
120                STLVmWrFlowVar(
121                    fv_name=u"mac_dst",
122                    pkt_offset=5
123                ),
124                STLVmFlowVar(
125                    name=u"dst",
126                    min_value=self.p2_dst_start_ip,
127                    max_value=self.p2_dst_end_ip,
128                    size=4,
129                    op=u"inc"
130                ),
131                STLVmWrFlowVar(
132                    fv_name=u"dst",
133                    pkt_offset=u"IP.dst"
134                ),
135                STLVmFixIpv4(
136                    offset=u"IP"
137                )
138            ]
139        )
140
141        return base_pkt_a, base_pkt_b, vm1, vm2
142
143
144def register():
145    """Register this traffic profile to T-rex.
146
147    Do not change this function.
148
149    :return: Traffic streams.
150    :rtype: Object
151    """
152    return TrafficStreams()
153
154