resources/traffic_profiles/trex/trex-sl-2n3n-ethip4-ip4src254-1c1n.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 re import finditer
  30
  31 from trex_stl_lib.api import *
  32 from profile_trex_stateless_base_class import TrafficStreamsBaseClass
  33
  34
  35 class TrafficStreams(TrafficStreamsBaseClass):
  36     """Stream profile."""
  37
  38     def __init__(self):
  39         """Initialization and setting of streams' parameters."""
  40
  41         super(TrafficStreamsBaseClass, self).__init__()
  42
  43         # Service density parameters.
  44         self.nf_chains = 1
  45         self.nf_nodes = 1
  46
  47         # MACs used in packet headers.
  48         self.p1_dst_start_mac = '52:54:00:00:00:01'
  49         self.p2_dst_start_mac = '52:54:00:00:00:02'
  50
  51         # IPs used in packet headers.
  52         self.p1_src_start_ip = '10.10.10.1'
  53         self.p1_src_end_ip = '10.10.10.254'
  54         self.p1_dst_start_ip = '20.20.20.1'
  55
  56         self.p2_src_start_ip = '20.20.20.1'
  57         self.p2_src_end_ip = '20.20.20.254'
  58         self.p2_dst_start_ip = '10.10.10.1'
  59
  60     def define_packets(self):
  61         """Defines the packets to be sent from the traffic generator.
  62
  63         Packet definition: | ETH | IP |
  64
  65         :returns: Packets to be sent from the traffic generator.
  66         :rtype: tuple
  67         """
  68
  69         # Direction 0 --> 1
  70         base_pkt_a = (Ether(dst=self.p1_dst_start_mac) /
  71                       IP(src=self.p1_src_start_ip,
  72                          dst=self.p1_dst_start_ip,
  73                          proto=61))
  74         # Direction 1 --> 0
  75         base_pkt_b = (Ether(dst=self.p2_dst_start_mac) /
  76                       IP(src=self.p2_src_start_ip,
  77                          dst=self.p2_dst_start_ip,
  78                          proto=61))
  79
  80         # Direction 0 --> 1
  81         vm1 = STLScVmRaw([STLVmFlowVar(name="mac_dst",
  82                                        min_value=1,
  83                                        max_value=self.nf_chains*self.nf_nodes,
  84                                        size=1, step=self.nf_nodes, op="inc"),
  85                           STLVmWrFlowVar(fv_name="mac_dst", pkt_offset=4),
  86                           STLVmFlowVar(name="src",
  87                                        min_value=self.p1_src_start_ip,
  88                                        max_value=self.p1_src_end_ip,
  89                                        size=4, op="inc"),
  90                           STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
  91                           STLVmFixIpv4(offset="IP")])
  92         # Direction 1 --> 0
  93         vm2 = STLScVmRaw([STLVmFlowVar(name="mac_dst",
  94                                        min_value=self.nf_nodes,
  95                                        max_value=self.nf_chains*self.nf_nodes,
  96                                        size=1, step=self.nf_nodes, op="inc"),
  97                           STLVmWrFlowVar(fv_name="mac_dst", pkt_offset=4),
  98                           STLVmFlowVar(name="src",
  99                                        min_value=self.p2_src_start_ip,
 100                                        max_value=self.p2_src_end_ip,
 101                                        size=4, op="inc"),
 102                           STLVmWrFlowVar(fv_name="src", pkt_offset="IP.src"),
 103                           STLVmFixIpv4(offset="IP")])
 104
 105         return base_pkt_a, base_pkt_b, vm1, vm2
 106
 107
 108 def register():
 109     """Register this traffic profile to T-rex.
 110
 111     Do not change this function.
 112
 113     :return: Traffic streams.
 114     :rtype: Object
 115     """
 116     return TrafficStreams()