GPL/traffic_profiles/trex/trex-sl-2n3n-ethip4-ip4src254-1c1n.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  - 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.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 = u"52:54:00:00:00:01"
  49         self.p2_dst_start_mac = u"52:54:00:00:00:02"
  50
  51         # IPs used in packet headers.
  52         self.p1_src_start_ip = u"10.10.10.1"
  53         self.p1_src_end_ip = u"10.10.10.254"
  54         self.p1_dst_start_ip = u"20.20.20.1"
  55
  56         self.p2_src_start_ip = u"20.20.20.1"
  57         self.p2_src_end_ip = u"20.20.20.254"
  58         self.p2_dst_start_ip = u"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 = (
  71             Ether(
  72                 dst=self.p1_dst_start_mac
  73             ) /
  74             IP(
  75                 src=self.p1_src_start_ip,
  76                 dst=self.p1_dst_start_ip,
  77                 proto=61
  78             )
  79         )
  80         # Direction 1 --> 0
  81         base_pkt_b = (
  82             Ether(
  83                 dst=self.p2_dst_start_mac
  84             ) /
  85             IP(
  86                 src=self.p2_src_start_ip,
  87                 dst=self.p2_dst_start_ip,
  88                 proto=61
  89             )
  90         )
  91
  92         # Direction 0 --> 1
  93         vm1 = STLScVmRaw(
  94             [
  95                 STLVmFlowVar(
  96                     name=u"mac_dst",
  97                     min_value=1,
  98                     max_value=self.nf_chains*self.nf_nodes,
  99                     size=1,
 100                     step=self.nf_nodes,
 101                     op=u"inc"
 102                 ),
 103                 STLVmWrFlowVar(
 104                     fv_name=u"mac_dst",
 105                     pkt_offset=4
 106                 ),
 107                 STLVmFlowVar(
 108                     name=u"src",
 109                     min_value=self.p1_src_start_ip,
 110                     max_value=self.p1_src_end_ip,
 111                     size=4,
 112                     op=u"inc"
 113                 ),
 114                 STLVmWrFlowVar(
 115                     fv_name=u"src",
 116                     pkt_offset=u"IP.src"
 117                 ),
 118                 STLVmFixIpv4(
 119                     offset=u"IP"
 120                 )
 121             ]
 122         )
 123         # Direction 1 --> 0
 124         vm2 = STLScVmRaw(
 125             [
 126                 STLVmFlowVar(
 127                     name=u"mac_dst",
 128                     min_value=self.nf_nodes,
 129                     max_value=self.nf_chains*self.nf_nodes,
 130                     size=1,
 131                     step=self.nf_nodes,
 132                     op=u"inc"
 133                 ),
 134                 STLVmWrFlowVar(
 135                     fv_name=u"mac_dst",
 136                     pkt_offset=4
 137                 ),
 138                 STLVmFlowVar(
 139                     name=u"src",
 140                     min_value=self.p2_src_start_ip,
 141                     max_value=self.p2_src_end_ip,
 142                     size=4,
 143                     op=u"inc"
 144                 ),
 145                 STLVmWrFlowVar(
 146                     fv_name=u"src",
 147                     pkt_offset=u"IP.src"
 148                 ),
 149                 STLVmFixIpv4(
 150                     offset=u"IP"
 151                 )
 152             ]
 153         )
 154
 155         return base_pkt_a, base_pkt_b, vm1, vm2
 156
 157
 158 def register():
 159     """Register this traffic profile to T-rex.
 160
 161     Do not change this function.
 162
 163     :return: Traffic streams.
 164     :rtype: Object
 165     """
 166     return TrafficStreams()