Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 3 | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame^] | 17 | package packetHandlers_test |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 18 | |
| 19 | import ( |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 20 | "github.com/google/gopacket" |
| 21 | "github.com/google/gopacket/layers" |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame^] | 22 | "github.com/opencord/bbsim/internal/bbsim/packetHandlers" |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 23 | "gotest.tools/assert" |
| 24 | "net" |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 25 | "testing" |
| 26 | ) |
| 27 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 28 | func TestPushSingleTag(t *testing.T) { |
| 29 | rawBytes := []byte{10, 20, 30} |
| 30 | srcMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, byte(1), byte(1)} |
| 31 | dstMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff} |
| 32 | |
| 33 | ethernetLayer := &layers.Ethernet{ |
| 34 | SrcMAC: srcMac, |
| 35 | DstMAC: dstMac, |
| 36 | EthernetType: 0x8100, |
| 37 | } |
| 38 | |
| 39 | buffer := gopacket.NewSerializeBuffer() |
| 40 | gopacket.SerializeLayers( |
| 41 | buffer, |
| 42 | gopacket.SerializeOptions{ |
| 43 | FixLengths: false, |
| 44 | }, |
| 45 | ethernetLayer, |
| 46 | gopacket.Payload(rawBytes), |
| 47 | ) |
| 48 | |
| 49 | untaggedPkt := gopacket.NewPacket(buffer.Bytes(), layers.LayerTypeEthernet, gopacket.Default) |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame^] | 50 | taggedPkt, err := packetHandlers.PushSingleTag(111, untaggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 51 | if err != nil { |
| 52 | t.Fail() |
| 53 | t.Logf("Error in PushSingleTag: %v", err) |
| 54 | } |
| 55 | |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame^] | 56 | vlan, _ := packetHandlers.GetVlanTag(taggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 57 | assert.Equal(t, vlan, uint16(111)) |
| 58 | } |
| 59 | |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame^] | 60 | func TestPushDoubleTag(t *testing.T) { |
| 61 | rawBytes := []byte{10, 20, 30} |
| 62 | srcMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, byte(1), byte(1)} |
| 63 | dstMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff} |
| 64 | |
| 65 | ethernetLayer := &layers.Ethernet{ |
| 66 | SrcMAC: srcMac, |
| 67 | DstMAC: dstMac, |
| 68 | EthernetType: 0x8100, |
| 69 | } |
| 70 | |
| 71 | buffer := gopacket.NewSerializeBuffer() |
| 72 | gopacket.SerializeLayers( |
| 73 | buffer, |
| 74 | gopacket.SerializeOptions{ |
| 75 | FixLengths: false, |
| 76 | }, |
| 77 | ethernetLayer, |
| 78 | gopacket.Payload(rawBytes), |
| 79 | ) |
| 80 | |
| 81 | untaggedPkt := gopacket.NewPacket(buffer.Bytes(), layers.LayerTypeEthernet, gopacket.Default) |
| 82 | taggedPkt, err := packetHandlers.PushDoubleTag(900, 800, untaggedPkt) |
| 83 | if err != nil { |
| 84 | t.Fail() |
| 85 | t.Logf("Error in PushSingleTag: %v", err) |
| 86 | } |
| 87 | |
| 88 | sTag, err := packetHandlers.GetVlanTag(taggedPkt) |
| 89 | if err != nil { |
| 90 | t.Fatalf(err.Error()) |
| 91 | } |
| 92 | singleTagPkt, err := packetHandlers.PopSingleTag(taggedPkt) |
| 93 | if err != nil { |
| 94 | t.Fatalf(err.Error()) |
| 95 | } |
| 96 | cTag, err := packetHandlers.GetVlanTag(singleTagPkt) |
| 97 | if err != nil { |
| 98 | t.Fatalf(err.Error()) |
| 99 | } |
| 100 | |
| 101 | assert.Equal(t, sTag, uint16(900)) |
| 102 | assert.Equal(t, cTag, uint16(800)) |
| 103 | } |
| 104 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 105 | func TestPopSingleTag(t *testing.T) { |
| 106 | rawBytes := []byte{10, 20, 30} |
| 107 | srcMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, byte(1), byte(1)} |
| 108 | dstMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff} |
| 109 | |
| 110 | ethernetLayer := &layers.Ethernet{ |
| 111 | SrcMAC: srcMac, |
| 112 | DstMAC: dstMac, |
| 113 | EthernetType: 0x8100, |
| 114 | } |
| 115 | |
| 116 | dot1qLayer := &layers.Dot1Q{ |
| 117 | Type: 0x8100, |
| 118 | VLANIdentifier: uint16(111), |
| 119 | } |
| 120 | |
| 121 | buffer := gopacket.NewSerializeBuffer() |
| 122 | gopacket.SerializeLayers( |
| 123 | buffer, |
| 124 | gopacket.SerializeOptions{ |
| 125 | FixLengths: false, |
| 126 | }, |
| 127 | ethernetLayer, |
| 128 | dot1qLayer, |
| 129 | gopacket.Payload(rawBytes), |
| 130 | ) |
| 131 | |
| 132 | untaggedPkt := gopacket.NewPacket(buffer.Bytes(), layers.LayerTypeEthernet, gopacket.Default) |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame^] | 133 | taggedPkt, err := packetHandlers.PopSingleTag(untaggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 134 | if err != nil { |
| 135 | t.Fail() |
| 136 | t.Logf("Error in PushSingleTag: %v", err) |
| 137 | } |
| 138 | |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame^] | 139 | vlan, err := packetHandlers.GetVlanTag(taggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 140 | assert.Equal(t, vlan, uint16(2580)) // FIXME where dows 2056 comes from?? |
| 141 | } |
| 142 | |
| 143 | func TestPopDoubleTag(t *testing.T) { |
| 144 | rawBytes := []byte{10, 20, 30} |
| 145 | srcMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, byte(1), byte(1)} |
| 146 | dstMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff} |
| 147 | |
| 148 | ethernetLayer := &layers.Ethernet{ |
| 149 | SrcMAC: srcMac, |
| 150 | DstMAC: dstMac, |
| 151 | EthernetType: 0x8100, |
| 152 | } |
| 153 | |
| 154 | dot1qLayer := &layers.Dot1Q{ |
| 155 | Type: 0x8100, |
| 156 | VLANIdentifier: uint16(111), |
| 157 | } |
| 158 | |
| 159 | buffer := gopacket.NewSerializeBuffer() |
| 160 | gopacket.SerializeLayers( |
| 161 | buffer, |
| 162 | gopacket.SerializeOptions{ |
| 163 | FixLengths: false, |
| 164 | }, |
| 165 | ethernetLayer, |
| 166 | dot1qLayer, |
| 167 | gopacket.Payload(rawBytes), |
| 168 | ) |
| 169 | |
| 170 | untaggedPkt := gopacket.NewPacket(buffer.Bytes(), layers.LayerTypeEthernet, gopacket.Default) |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame^] | 171 | taggedPkt, err := packetHandlers.PopDoubleTag(untaggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 172 | if err != nil { |
| 173 | t.Fail() |
| 174 | t.Logf("Error in PushSingleTag: %v", err) |
| 175 | } |
| 176 | |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame^] | 177 | vlan, err := packetHandlers.GetVlanTag(taggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 178 | assert.Equal(t, vlan, uint16(0)) |
| 179 | assert.Equal(t, err.Error(), "no-dot1q-layer-in-packet") |
| 180 | } |