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

   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
  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.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 = u"10.10.10.1"
  45         self.p1_src_end_ip = u"10.10.10.254"
  46         self.p1_dst_start_ip = u"20.20.20.1"
  47
  48         self.p2_src_start_ip = u"20.20.20.1"
  49         self.p2_src_end_ip = u"20.20.20.254"
  50         self.p2_dst_start_ip = u"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 = (
  63           Ether() /
  64           IP(
  65               src=self.p1_src_start_ip,
  66               dst=self.p1_dst_start_ip,
  67               proto=61
  68           )
  69         )
  70         # Direction 1 --> 0
  71         base_pkt_b = (
  72           Ether() /
  73           Dot1Q(
  74               vlan=self.vlan_id
  75           ) /
  76           IP(
  77               src=self.p2_src_start_ip,
  78               dst=self.p2_dst_start_ip,
  79               proto=61
  80           )
  81         )
  82
  83         # Direction 0 --> 1
  84         vm1 = STLScVmRaw(
  85             [
  86                 STLVmFlowVar(
  87                     name=u"src",
  88                     min_value=self.p1_src_start_ip,
  89                     max_value=self.p1_src_end_ip,
  90                     size=4,
  91                     op=u"inc"
  92                 ),
  93                 STLVmWrFlowVar(
  94                     fv_name=u"src",
  95                     pkt_offset=u"IP.src"
  96                 ),
  97                 STLVmFixIpv4(
  98                     offset=u"IP"
  99                 )
 100             ]
 101         )
 102         # Direction 1 --> 0
 103         vm2 = STLScVmRaw(
 104             [
 105                 STLVmFlowVar(
 106                     name=u"src",
 107                     min_value=self.p2_src_start_ip,
 108                     max_value=self.p2_src_end_ip,
 109                     size=4,
 110                     op=u"inc"
 111                 ),
 112                 STLVmWrFlowVar(
 113                     fv_name=u"src",
 114                     pkt_offset=u"IP.src"
 115                 ),
 116                 STLVmFixIpv4(
 117                     offset=u"IP"
 118                 )
 119             ]
 120         )
 121
 122         return base_pkt_a, base_pkt_b, vm1, vm2
 123
 124
 125 def register():
 126     """Register this traffic profile to T-rex.
 127
 128     Do not change this function.
 129
 130     :return: Traffic streams.
 131     :rtype: Object
 132     """
 133     return TrafficStreams()