resources/traffic_profiles/trex/trex-sl-2n-dot1qip4asym-ip4src254.py

   1 # Copyright (c) 2018 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  - Direction 0 --> 1:
  19    - Packet:                       ETH / IP /
  20    - Source IP address range:      10.10.10.1 - 10.10.10.254
  21    - Destination IP address range: 20.20.20.1
  22  - Direction 1 --> 0:
  23    - Packet:                       ETH / DOT1Q / IP /
  24    - Source IP address range:      20.20.20.1 - 20.20.20.254
  25    - Destination IP address range: 10.10.10.1
  26 """
  27
  28 from trex_stl_lib.api import *
  29 from profile_trex_stateless_base_class import TrafficStreamsBaseClass
  30
  31
  32 class TrafficStreams(TrafficStreamsBaseClass):
  33     """Stream profile."""
  34
  35     def __init__(self):
  36         """Initialization and setting of streams' parameters."""
  37
  38         super(TrafficStreamsBaseClass, self).__init__()
  39
  40         # VLAN ID
  41         self.vlan_id = 10
  42
  43         # IPs used in packet headers.
  44         self.p1_src_start_ip = '10.10.10.1'
  45         self.p1_src_end_ip = '10.10.10.254'
  46         self.p1_dst_start_ip = '20.20.20.1'
  47
  48         self.p2_src_start_ip = '20.20.20.1'
  49         self.p2_src_end_ip = '20.20.20.254'
  50         self.p2_dst_start_ip = '10.10.10.1'
  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 = (Ether() /
  63                       IP(src=self.p1_src_start_ip,
  64                          dst=self.p1_dst_start_ip,
  65                          proto=61))
  66         # Direction 1 --> 0
  67         base_pkt_b = (Ether() /
  68                       Dot1Q(vlan=self.vlan_id) /
  69                       IP(src=self.p2_src_start_ip,
  70                          dst=self.p2_dst_start_ip,
  71                          proto=61))
  72
  73         # Direction 0 --> 1
  74         vm1 = STLScVmRaw([STLVmFlowVar(name="src",
  75                                        min_value=self.p1_src_start_ip,
  76                                        max_value=self.p1_src_end_ip,
  77                                        size=4, op="inc"),
  78                           STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
  79                           STLVmFixIpv4(offset="IP")])
  80         # Direction 1 --> 0
  81         vm2 = STLScVmRaw([STLVmFlowVar(name="src",
  82                                        min_value=self.p2_src_start_ip,
  83                                        max_value=self.p2_src_end_ip,
  84                                        size=4, op="inc"),
  85                           STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
  86                           STLVmFixIpv4(offset="IP")])
  87
  88         return base_pkt_a, base_pkt_b, vm1, vm2
  89
  90
  91 def register():
  92     """Register this traffic profile to T-rex.
  93
  94     Do not change this function.
  95
  96     :return: Traffic streams.
  97     :rtype: Object
  98     """
  99     return TrafficStreams()