trex-sl-2n3n-ethip4-ip4src254-10c1n.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   - Destination MAC address: 52:54:00:00:nf_id:01
21   - Source IP address range:      10.10.10.1 - 10.10.10.254
22   - Destination IP address range: 20.20.20.1
23 - Direction 1 --> 0:
24    - Destination MAC address: 52:54:00:00:nf_id:02
25   - Source IP address range:      20.20.20.1 - 20.20.20.254
26   - Destination IP address range: 10.10.10.1
27"""
28
29from trex.stl.api import *
30from profile_trex_stateless_base_class import TrafficStreamsBaseClass
31
32
33class TrafficStreams(TrafficStreamsBaseClass):
34    """Stream profile."""
35
36    def __init__(self):
37        """Initialization and setting of streams' parameters."""
38
39        super(TrafficStreamsBaseClass, self).__init__()
40
41        # Service density parameters.
42        self.nf_chains = 10
43        self.nf_nodes = 1
44
45        # MACs used in packet headers.
46        self.p1_dst_start_mac = u"52:54:00:00:00:01"
47        self.p2_dst_start_mac = u"52:54:00:00:00:02"
48
49        # IPs used in packet headers.
50        self.p1_src_start_ip = u"10.10.10.1"
51        self.p1_src_end_ip = u"10.10.10.254"
52        self.p1_dst_start_ip = u"20.20.20.1"
53
54        self.p2_src_start_ip = u"20.20.20.1"
55        self.p2_src_end_ip = u"20.20.20.254"
56        self.p2_dst_start_ip = u"10.10.10.1"
57
58    def define_packets(self):
59        """Defines the packets to be sent from the traffic generator.
60
61        Packet definition: | ETH | IP |
62
63        :returns: Packets to be sent from the traffic generator.
64        :rtype: tuple
65        """
66
67        # Direction 0 --> 1
68        base_pkt_a = (
69            Ether(
70                dst=self.p1_dst_start_mac
71            ) /
72            IP(
73                src=self.p1_src_start_ip,
74                dst=self.p1_dst_start_ip,
75                proto=61
76            )
77        )
78        # Direction 1 --> 0
79        base_pkt_b = (
80            Ether(
81                dst=self.p2_dst_start_mac
82            ) /
83            IP(
84                src=self.p2_src_start_ip,
85                dst=self.p2_dst_start_ip,
86                proto=61
87            )
88        )
89
90        # Direction 0 --> 1
91        vm1 = STLScVmRaw(
92            [
93                STLVmFlowVar(
94                    name=u"mac_dst",
95                    min_value=1,
96                    max_value=self.nf_chains*self.nf_nodes,
97                    size=1,
98                    step=self.nf_nodes,
99                    op=u"inc"
100                ),
101                STLVmWrFlowVar(
102                    fv_name=u"mac_dst",
103                    pkt_offset=4
104                ),
105                STLVmFlowVar(
106                    name=u"src",
107                    min_value=self.p1_src_start_ip,
108                    max_value=self.p1_src_end_ip,
109                    size=4, op=u"inc"
110                ),
111                STLVmWrFlowVar(
112                    fv_name=u"src",
113                    pkt_offset=u"IP.src"
114                ),
115                STLVmFixIpv4(
116                    offset=u"IP"
117                )
118            ]
119        )
120        # Direction 1 --> 0
121        vm2 = STLScVmRaw(
122            [
123                STLVmFlowVar(
124                    name=u"mac_dst",
125                    min_value=self.nf_nodes,
126                    max_value=self.nf_chains*self.nf_nodes,
127                    size=1,
128                    step=self.nf_nodes,
129                    op=u"inc"
130                ),
131                STLVmWrFlowVar(
132                    fv_name=u"mac_dst",
133                    pkt_offset=4
134                ),
135                STLVmFlowVar(
136                    name=u"src",
137                    min_value=self.p2_src_start_ip,
138                    max_value=self.p2_src_end_ip,
139                    size=4,
140                    op=u"inc"
141                ),
142                STLVmWrFlowVar(
143                    fv_name=u"src",
144                    pkt_offset=u"IP.src"
145                ),
146                STLVmFixIpv4(
147                    offset=u"IP"
148                )
149            ]
150        )
151
152        return base_pkt_a, base_pkt_b, vm1, vm2
153
154
155def register():
156    """Register this traffic profile to T-rex.
157
158    Do not change this function.
159
160    :return: Traffic streams.
161    :rtype: Object
162    """
163    return TrafficStreams()
164