GPL/traffic_profiles/trex/trex-sl-2n-dot1qip6asym-ip6src253.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 / 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 = u"2001:1::2"
  45         self.p1_src_end_ip = u"2001:1::FE"
  46         self.p1_dst_start_ip = u"2001:2::2"
  47
  48         self.p2_src_start_ip = u"2001:2::2"
  49         self.p2_src_end_ip = u"2001:2::FE"
  50         self.p2_dst_start_ip = u"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(
  62             self.p1_src_start_ip,
  63             self.p1_src_end_ip
  64         )
  65         base_p2, count_p2 = self._get_start_end_ipv6(
  66             self.p2_src_start_ip,
  67             self.p2_src_end_ip
  68         )
  69
  70         # Direction 0 --> 1
  71         base_pkt_a = (
  72             Ether() /
  73             IPv6(
  74                 src=self.p1_src_start_ip,
  75                 dst=self.p1_dst_start_ip
  76             )
  77         )
  78         # Direction 1 --> 0
  79         base_pkt_b = (
  80             Ether() /
  81             Dot1Q(
  82                 vlan=self.vlan_id
  83             ) /
  84             IPv6(
  85                 src=self.p2_src_start_ip,
  86                 dst=self.p2_dst_start_ip
  87             )
  88         )
  89
  90         # Direction 0 --> 1
  91         vm1 = STLScVmRaw(
  92             [
  93                 STLVmFlowVar(
  94                     name=u"ipv6_src",
  95                     min_value=base_p1,
  96                     max_value=base_p1 + count_p1,
  97                     size=8, op=u"inc"
  98                 ),
  99                 STLVmWrFlowVar(
 100                     fv_name=u"ipv6_src",
 101                     pkt_offset=u"IPv6.src",
 102                     offset_fixup=8
 103                 )
 104             ]
 105         )
 106         # Direction 1 --> 0
 107         vm2 = STLScVmRaw(
 108             [
 109                 STLVmFlowVar(
 110                     name=u"ipv6_src",
 111                     min_value=base_p2,
 112                     max_value=base_p2 + count_p2,
 113                     size=8, op=u"inc"
 114                 ),
 115                 STLVmWrFlowVar(
 116                     fv_name=u"ipv6_src",
 117                     pkt_offset=u"IPv6.src",
 118                     offset_fixup=8
 119                 )
 120             ]
 121         )
 122
 123         return base_pkt_a, base_pkt_b, vm1, vm2
 124
 125
 126 def register():
 127     """Register this traffic profile to T-rex.
 128
 129     Do not change this function.
 130
 131     :returns: Traffic streams.
 132     :rtype: Object
 133     """
 134     return TrafficStreams()