vendor/github.com/google/gopacket/layers/mpls_test.go

   1 // Copyright 2016 Google, Inc. All rights reserved.
   2 //
   3 // Use of this source code is governed by a BSD-style license
   4 // that can be found in the LICENSE file in the root of the source
   5 // tree.
   6
   7 package layers
   8
   9 import (
  10         "reflect"
  11         "testing"
  12
  13         "github.com/google/gopacket"
  14 )
  15
  16 // testPacketMPLS
  17 // Ethernet II, Src: cc:15:14:64:00:00 (cc:15:14:64:00:00), Dst: cc:13:14:64:00:01 (cc:13:14:64:00:01)
  18 // MultiProtocol Label Switching Header, Label: 17, Exp: 0, S: 0, TTL: 254
  19 // MultiProtocol Label Switching Header, Label: 19, Exp: 0, S: 1, TTL: 254
  20 // Internet Protocol Version 4, Src: 12.0.0.1, Dst: 2.2.2.2
  21 // Internet Control Message Protocol
  22 // 0000   cc 13 14 64 00 01 cc 15 14 64 00 00 88 47 00 01  ...d.....d...G..
  23 // 0010   10 fe 00 01 31 fe 45 00 00 64 00 39 00 00 fe 01  ....1.E..d.9....
  24 // 0020   ac 5b 0c 00 00 01 02 02 02 02 08 00 3a 6b 00 0b  .[..........:k..
  25 // 0030   00 02 00 00 00 00 00 3e 43 94 ab cd ab cd ab cd  .......>C.......
  26 // 0040   ab cd ab cd ab cd ab cd ab cd ab cd ab cd ab cd  ................
  27 // 0050   ab cd ab cd ab cd ab cd ab cd ab cd ab cd ab cd  ................
  28 // 0060   ab cd ab cd ab cd ab cd ab cd ab cd ab cd ab cd  ................
  29 // 0070   ab cd ab cd ab cd ab cd ab cd                    ..........
  30
  31 var testPacketMPLS = []byte{
  32         0xcc, 0x13, 0x14, 0x64, 0x00, 0x01, 0xcc, 0x15, 0x14, 0x64, 0x00, 0x00, 0x88, 0x47, 0x00, 0x01,
  33         0x10, 0xfe, 0x00, 0x01, 0x31, 0xfe, 0x45, 0x00, 0x00, 0x64, 0x00, 0x39, 0x00, 0x00, 0xfe, 0x01,
  34         0xac, 0x5b, 0x0c, 0x00, 0x00, 0x01, 0x02, 0x02, 0x02, 0x02, 0x08, 0x00, 0x3a, 0x6b, 0x00, 0x0b,
  35         0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3e, 0x43, 0x94, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  36         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  37         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  38         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  39         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  40 }
  41
  42 func TestPacketMPLS(t *testing.T) {
  43         p := gopacket.NewPacket(testPacketMPLS, LinkTypeEthernet, gopacket.Default)
  44         if p.ErrorLayer() != nil {
  45                 t.Error("Failed to decode packet:", p.ErrorLayer().Error())
  46         }
  47         checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeMPLS, LayerTypeMPLS, LayerTypeIPv4, LayerTypeICMPv4, gopacket.LayerTypePayload}, t)
  48         if got, ok := p.Layers()[1].(*MPLS); ok {
  49                 want := &MPLS{
  50                         BaseLayer: BaseLayer{
  51                                 Contents: []byte{0x00, 0x01, 0x10, 0xfe},
  52                                 Payload: []byte{0x00, 0x01, 0x31, 0xfe, 0x45, 0x00, 0x00, 0x64, 0x00, 0x39, 0x00, 0x00, 0xfe, 0x01,
  53                                         0xac, 0x5b, 0x0c, 0x00, 0x00, 0x01, 0x02, 0x02, 0x02, 0x02, 0x08, 0x00, 0x3a, 0x6b, 0x00, 0x0b,
  54                                         0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3e, 0x43, 0x94, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  55                                         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  56                                         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  57                                         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  58                                         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd},
  59                         },
  60                         Label:        17,
  61                         TrafficClass: 0,
  62                         StackBottom:  false,
  63                         TTL:          254,
  64                 }
  65                 if !reflect.DeepEqual(want, got) {
  66                         t.Errorf("MPLS layer 1 mismatch, \nwant %#v\ngot %#v\n", want, got)
  67                 }
  68         }
  69         if got, ok := p.Layers()[2].(*MPLS); ok {
  70                 want := &MPLS{
  71                         BaseLayer: BaseLayer{
  72                                 Contents: []byte{0x00, 0x01, 0x31, 0xfe},
  73                                 Payload: []byte{0x45, 0x00, 0x00, 0x64, 0x00, 0x39, 0x00, 0x00, 0xfe, 0x01,
  74                                         0xac, 0x5b, 0x0c, 0x00, 0x00, 0x01, 0x02, 0x02, 0x02, 0x02, 0x08, 0x00, 0x3a, 0x6b, 0x00, 0x0b,
  75                                         0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3e, 0x43, 0x94, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  76                                         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  77                                         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  78                                         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd,
  79                                         0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd},
  80                         },
  81                         Label:        19,
  82                         TrafficClass: 0,
  83                         StackBottom:  true,
  84                         TTL:          254,
  85                 }
  86                 if !reflect.DeepEqual(want, got) {
  87                         t.Errorf("MPLS layer 2 mismatch, \nwant %#v\ngot %#v\n", want, got)
  88                 }
  89         }
  90 }
  91
  92 func BenchmarkDecodePacketMPLS(b *testing.B) {
  93         for i := 0; i < b.N; i++ {
  94                 gopacket.NewPacket(testPacketMPLS, LinkTypeEthernet, gopacket.NoCopy)
  95         }
  96 }