resources/tools/t-rex/stream_profiles/trex-sl-2n-ethip4-ip4src253.py

   1 # Copyright (c) 2017 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
  16 Stream 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:      10.10.10.2 - 10.10.10.254
  21    - Destination IP address range: 20.20.20.2
  22  - Direction 1 --> 0:
  23    - Source IP address range:      20.20.20.2 - 20.20.20.254
  24    - Destination IP address range: 10.10.10.2
  25 """
  26
  27 from trex_stl_lib.api import *
  28 from profile_trex_stateless_base_class import TrafficStreamsBaseClass
  29
  30
  31 class 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 = '10.10.10.2'
  41         self.p1_src_end_ip = '10.10.10.254'
  42         self.p1_dst_start_ip = '20.20.20.2'
  43
  44         self.p2_src_start_ip = '20.20.20.2'
  45         self.p2_src_end_ip = '20.20.20.254'
  46         self.p2_dst_start_ip = '10.10.10.2'
  47
  48     def define_packets(self):
  49         """Defines the packets to be sent from the traffic generator.
  50
  51         Packet definition: | ETH | IP |
  52
  53         :returns: Packets to be sent from the traffic generator.
  54         :rtype: tuple
  55         """
  56
  57         # Direction 0 --> 1
  58         base_pkt_a = Ether() / IP(src=self.p1_src_start_ip,
  59                                   dst=self.p1_dst_start_ip,
  60                                   proto=61)
  61         # Direction 1 --> 0
  62         base_pkt_b = Ether() / IP(src=self.p2_src_start_ip,
  63                                   dst=self.p2_dst_start_ip,
  64                                   proto=61)
  65
  66         # Direction 0 --> 1
  67         vm1 = STLScVmRaw([STLVmFlowVar(name="src",
  68                                        min_value=self.p1_src_start_ip,
  69                                        max_value=self.p1_src_end_ip,
  70                                        size=4, op="inc"),
  71                           STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
  72                           STLVmFixIpv4(offset="IP")],
  73                          split_by_field="src")
  74         # Direction 1 --> 0
  75         vm2 = STLScVmRaw([STLVmFlowVar(name="src",
  76                                        min_value=self.p2_src_start_ip,
  77                                        max_value=self.p2_src_end_ip,
  78                                        size=4, op="inc"),
  79                           STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
  80                           STLVmFixIpv4(offset="IP")],
  81                          split_by_field="src")
  82
  83         return base_pkt_a, base_pkt_b, vm1, vm2
  84
  85
  86 def register():
  87     """Register this traffic profile to T-rex.
  88
  89     Do not change this function.
  90
  91     :return: Traffic streams.
  92     :rtype: Object
  93     """
  94     return TrafficStreams()