resources/traffic_profiles/trex/trex-sl-2n3n-ethip4-ip4src254-8c1n.py

   1 # Copyright (c) 2019 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    - 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
  29 from trex.stl.api import *
  30 from profile_trex_stateless_base_class import TrafficStreamsBaseClass
  31
  32
  33 class 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 = 8
  43         self.nf_nodes = 1
  44
  45         # MACs used in packet headers.
  46         self.p1_dst_start_mac = '52:54:00:00:00:01'
  47         self.p2_dst_start_mac = '52:54:00:00:00:02'
  48
  49         # IPs used in packet headers.
  50         self.p1_src_start_ip = '10.10.10.1'
  51         self.p1_src_end_ip = '10.10.10.254'
  52         self.p1_dst_start_ip = '20.20.20.1'
  53
  54         self.p2_src_start_ip = '20.20.20.1'
  55         self.p2_src_end_ip = '20.20.20.254'
  56         self.p2_dst_start_ip = '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 = (Ether(dst=self.p1_dst_start_mac) /
  69                       IP(src=self.p1_src_start_ip,
  70                          dst=self.p1_dst_start_ip,
  71                          proto=61))
  72         # Direction 1 --> 0
  73         base_pkt_b = (Ether(dst=self.p2_dst_start_mac) /
  74                       IP(src=self.p2_src_start_ip,
  75                          dst=self.p2_dst_start_ip,
  76                          proto=61))
  77
  78         # Direction 0 --> 1
  79         vm1 = STLScVmRaw([STLVmFlowVar(name="mac_dst",
  80                                        min_value=1,
  81                                        max_value=self.nf_chains*self.nf_nodes,
  82                                        size=1, step=self.nf_nodes, op="inc"),
  83                           STLVmWrFlowVar(fv_name="mac_dst", pkt_offset=4),
  84                           STLVmFlowVar(name="src",
  85                                        min_value=self.p1_src_start_ip,
  86                                        max_value=self.p1_src_end_ip,
  87                                        size=4, op="inc"),
  88                           STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
  89                           STLVmFixIpv4(offset="IP")])
  90         # Direction 1 --> 0
  91         vm2 = STLScVmRaw([STLVmFlowVar(name="mac_dst",
  92                                        min_value=self.nf_nodes,
  93                                        max_value=self.nf_chains*self.nf_nodes,
  94                                        size=1, step=self.nf_nodes, op="inc"),
  95                           STLVmWrFlowVar(fv_name="mac_dst", pkt_offset=4),
  96                           STLVmFlowVar(name="src",
  97                                        min_value=self.p2_src_start_ip,
  98                                        max_value=self.p2_src_end_ip,
  99                                        size=4, op="inc"),
 100                           STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
 101                           STLVmFixIpv4(offset="IP")])
 102
 103         return base_pkt_a, base_pkt_b, vm1, vm2
 104
 105
 106 def register():
 107     """Register this traffic profile to T-rex.
 108
 109     Do not change this function.
 110
 111     :return: Traffic streams.
 112     :rtype: Object
 113     """
 114     return TrafficStreams()