trex-sl-3n-ethip6-ip6dst10000.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 / IPv6 /
19 - Direction 0 --> 1:
20   - Source IP address range:      2001:1::1
21   - Destination IP address range: 2001:2::0 - 2001:2::270F
22 - Direction 1 --> 0:
23   - Source IP address range:      2001:2::1
24   - Destination IP address range: 2001:1::0 - 2001:1::270F
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        # IPs used in packet headers.
40        self.p1_src_start_ip = u"2001:1::1"
41        self.p1_dst_start_ip = u"2001:2::0"
42        self.p1_dst_end_ip = u"2001:2::270F"
43
44        self.p2_src_start_ip = u"2001:2::1"
45        self.p2_dst_start_ip = u"2001:1::0"
46        self.p2_dst_end_ip = u"2001:1::270F"
47
48    def define_packets(self):
49        """Defines the packets to be sent from the traffic generator.
50
51        Packet definition: | ETH | IPv6 |
52
53        :returns: Packets to be sent from the traffic generator.
54        :rtype: tuple
55        """
56
57        base_p1, count_p1 = self._get_start_end_ipv6(
58            self.p1_dst_start_ip,
59            self.p1_dst_end_ip
60        )
61        base_p2, count_p2 = self._get_start_end_ipv6(
62            self.p2_dst_start_ip,
63            self.p2_dst_end_ip
64        )
65
66        # Direction 0 --> 1
67        base_pkt_a = (
68            Ether() /
69            IPv6(
70                src=self.p1_src_start_ip,
71                dst=self.p1_dst_start_ip
72            )
73        )
74        # Direction 1 --> 0
75        base_pkt_b = (
76            Ether() /
77            IPv6(
78                src=self.p2_src_start_ip,
79                dst=self.p2_dst_start_ip
80            )
81        )
82
83        # Direction 0 --> 1
84        vm1 = STLScVmRaw(
85            [
86                STLVmFlowVar(
87                    name=u"ipv6_dst",
88                    min_value=base_p1,
89                    max_value=base_p1 + count_p1,
90                    size=8,
91                    op=u"inc"
92                ),
93                STLVmWrFlowVar(
94                    fv_name=u"ipv6_dst",
95                    pkt_offset=u"IPv6.dst",
96                    offset_fixup=8
97                )
98            ]
99        )
100        # Direction 1 --> 0
101        vm2 = STLScVmRaw(
102            [
103                STLVmFlowVar(
104                    name=u"ipv6_dst",
105                    min_value=base_p2,
106                    max_value=base_p2 + count_p2,
107                    size=8,
108                    op=u"inc"
109                ),
110                STLVmWrFlowVar(
111                    fv_name=u"ipv6_dst",
112                    pkt_offset=u"IPv6.dst",
113                    offset_fixup=8
114                )
115            ]
116        )
117
118        return base_pkt_a, base_pkt_b, vm1, vm2
119
120
121def register():
122    """Register this traffic profile to T-rex.
123
124    Do not change this function.
125
126    :return: Traffic streams.
127    :rtype: Object
128    """
129    return TrafficStreams()
130