resources/traffic_profiles/trex/trex-sl-2n-dot1qip6asym-ip6src253.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  - Direction 0 --> 1:
  19    - Packet: ETH / IPv6 /
  20    - Source IP address range:      2001:1::2 - 2001:1::FE
  21    - Destination IP address range: 2001:2::2
  22  - Direction 1 --> 0:
  23    - Packet: ETH / DOT1Q / IPv6 /
  24    - Source IP address range:      2001:2::2 - 2001:2::FE
  25    - Destination IP address range: 2001:1::2
  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 = '2001:1::2'
  45         self.p1_src_end_ip = '2001:1::FE'
  46         self.p1_dst_start_ip = '2001:2::2'
  47
  48         self.p2_src_start_ip = '2001:2::2'
  49         self.p2_src_end_ip = '2001:2::FE'
  50         self.p2_dst_start_ip = '2001:1::2'
  51
  52     def define_packets(self):
  53         """Defines the packets to be sent from the traffic generator.
  54
  55         Packet definition: | ETH | IPv6 |
  56
  57         :returns: Packets to be sent from the traffic generator.
  58         :rtype: tuple
  59         """
  60
  61         base_p1, count_p1 = self._get_start_end_ipv6(self.p1_src_start_ip,
  62                                                      self.p1_src_end_ip)
  63         base_p2, count_p2 = self._get_start_end_ipv6(self.p2_src_start_ip,
  64                                                      self.p2_src_end_ip)
  65
  66         # Direction 0 --> 1
  67         base_pkt_a = (Ether() /
  68                       IPv6(src=self.p1_src_start_ip,
  69                            dst=self.p1_dst_start_ip))
  70         # Direction 1 --> 0
  71         base_pkt_b = (Ether() /
  72                       Dot1Q(vlan=self.vlan_id) /
  73                       IPv6(src=self.p2_src_start_ip,
  74                            dst=self.p2_dst_start_ip))
  75
  76         # Direction 0 --> 1
  77         vm1 = STLScVmRaw([STLVmFlowVar(name="ipv6_src",
  78                                        min_value=base_p1,
  79                                        max_value=base_p1 + count_p1,
  80                                        size=8, op="inc"),
  81                           STLVmWrFlowVar(fv_name="ipv6_src",
  82                                          pkt_offset="IPv6.src",
  83                                          offset_fixup=8)])
  84         # Direction 1 --> 0
  85         vm2 = STLScVmRaw([STLVmFlowVar(name="ipv6_src",
  86                                        min_value=base_p2,
  87                                        max_value=base_p2 + count_p2,
  88                                        size=8, op="inc"),
  89                           STLVmWrFlowVar(fv_name="ipv6_src",
  90                                          pkt_offset="IPv6.src",
  91                                          offset_fixup=8)])
  92
  93         return base_pkt_a, base_pkt_b, vm1, vm2
  94
  95
  96 def register():
  97     """Register this traffic profile to T-rex.
  98
  99     Do not change this function.
 100
 101     :returns: Traffic streams.
 102     :rtype: Object
 103     """
 104     return TrafficStreams()