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 ( |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 20 | "net" |
| 21 | "testing" |
| 22 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 23 | "github.com/google/gopacket" |
| 24 | "github.com/google/gopacket/layers" |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame] | 25 | "github.com/opencord/bbsim/internal/bbsim/packetHandlers" |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 26 | "gotest.tools/assert" |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 27 | ) |
| 28 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 29 | func TestPushSingleTag(t *testing.T) { |
| 30 | rawBytes := []byte{10, 20, 30} |
| 31 | srcMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, byte(1), byte(1)} |
| 32 | dstMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff} |
| 33 | |
| 34 | ethernetLayer := &layers.Ethernet{ |
| 35 | SrcMAC: srcMac, |
| 36 | DstMAC: dstMac, |
| 37 | EthernetType: 0x8100, |
| 38 | } |
| 39 | |
| 40 | buffer := gopacket.NewSerializeBuffer() |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 41 | _ = gopacket.SerializeLayers( |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 42 | buffer, |
| 43 | gopacket.SerializeOptions{ |
| 44 | FixLengths: false, |
| 45 | }, |
| 46 | ethernetLayer, |
| 47 | gopacket.Payload(rawBytes), |
| 48 | ) |
| 49 | |
| 50 | untaggedPkt := gopacket.NewPacket(buffer.Bytes(), layers.LayerTypeEthernet, gopacket.Default) |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame^] | 51 | |
| 52 | taggedPkt, err := packetHandlers.PushSingleTag(111, untaggedPkt, 7) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 53 | if err != nil { |
| 54 | t.Fail() |
| 55 | t.Logf("Error in PushSingleTag: %v", err) |
| 56 | } |
| 57 | |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame] | 58 | vlan, _ := packetHandlers.GetVlanTag(taggedPkt) |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame^] | 59 | pbit, _ := packetHandlers.GetPbit(taggedPkt) |
| 60 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 61 | assert.Equal(t, vlan, uint16(111)) |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame^] | 62 | assert.Equal(t, pbit, uint8(7)) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 63 | } |
| 64 | |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame] | 65 | func TestPushDoubleTag(t *testing.T) { |
| 66 | rawBytes := []byte{10, 20, 30} |
| 67 | srcMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, byte(1), byte(1)} |
| 68 | dstMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff} |
| 69 | |
| 70 | ethernetLayer := &layers.Ethernet{ |
| 71 | SrcMAC: srcMac, |
| 72 | DstMAC: dstMac, |
| 73 | EthernetType: 0x8100, |
| 74 | } |
| 75 | |
| 76 | buffer := gopacket.NewSerializeBuffer() |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 77 | _ = gopacket.SerializeLayers( |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame] | 78 | buffer, |
| 79 | gopacket.SerializeOptions{ |
| 80 | FixLengths: false, |
| 81 | }, |
| 82 | ethernetLayer, |
| 83 | gopacket.Payload(rawBytes), |
| 84 | ) |
| 85 | |
| 86 | untaggedPkt := gopacket.NewPacket(buffer.Bytes(), layers.LayerTypeEthernet, gopacket.Default) |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame^] | 87 | taggedPkt, err := packetHandlers.PushDoubleTag(900, 800, untaggedPkt, 0) |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame] | 88 | if err != nil { |
| 89 | t.Fail() |
| 90 | t.Logf("Error in PushSingleTag: %v", err) |
| 91 | } |
| 92 | |
| 93 | sTag, err := packetHandlers.GetVlanTag(taggedPkt) |
| 94 | if err != nil { |
| 95 | t.Fatalf(err.Error()) |
| 96 | } |
| 97 | singleTagPkt, err := packetHandlers.PopSingleTag(taggedPkt) |
| 98 | if err != nil { |
| 99 | t.Fatalf(err.Error()) |
| 100 | } |
| 101 | cTag, err := packetHandlers.GetVlanTag(singleTagPkt) |
| 102 | if err != nil { |
| 103 | t.Fatalf(err.Error()) |
| 104 | } |
| 105 | |
| 106 | assert.Equal(t, sTag, uint16(900)) |
| 107 | assert.Equal(t, cTag, uint16(800)) |
| 108 | } |
| 109 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 110 | func TestPopSingleTag(t *testing.T) { |
| 111 | rawBytes := []byte{10, 20, 30} |
| 112 | srcMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, byte(1), byte(1)} |
| 113 | dstMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff} |
| 114 | |
| 115 | ethernetLayer := &layers.Ethernet{ |
| 116 | SrcMAC: srcMac, |
| 117 | DstMAC: dstMac, |
| 118 | EthernetType: 0x8100, |
| 119 | } |
| 120 | |
| 121 | dot1qLayer := &layers.Dot1Q{ |
| 122 | Type: 0x8100, |
| 123 | VLANIdentifier: uint16(111), |
| 124 | } |
| 125 | |
| 126 | buffer := gopacket.NewSerializeBuffer() |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 127 | _ = gopacket.SerializeLayers( |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 128 | buffer, |
| 129 | gopacket.SerializeOptions{ |
| 130 | FixLengths: false, |
| 131 | }, |
| 132 | ethernetLayer, |
| 133 | dot1qLayer, |
| 134 | gopacket.Payload(rawBytes), |
| 135 | ) |
| 136 | |
| 137 | untaggedPkt := gopacket.NewPacket(buffer.Bytes(), layers.LayerTypeEthernet, gopacket.Default) |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame] | 138 | taggedPkt, err := packetHandlers.PopSingleTag(untaggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 139 | if err != nil { |
| 140 | t.Fail() |
| 141 | t.Logf("Error in PushSingleTag: %v", err) |
| 142 | } |
| 143 | |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 144 | vlan, _ := packetHandlers.GetVlanTag(taggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 145 | assert.Equal(t, vlan, uint16(2580)) // FIXME where dows 2056 comes from?? |
| 146 | } |
| 147 | |
| 148 | func TestPopDoubleTag(t *testing.T) { |
| 149 | rawBytes := []byte{10, 20, 30} |
| 150 | srcMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, byte(1), byte(1)} |
| 151 | dstMac := net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff} |
| 152 | |
| 153 | ethernetLayer := &layers.Ethernet{ |
| 154 | SrcMAC: srcMac, |
| 155 | DstMAC: dstMac, |
| 156 | EthernetType: 0x8100, |
| 157 | } |
| 158 | |
| 159 | dot1qLayer := &layers.Dot1Q{ |
| 160 | Type: 0x8100, |
| 161 | VLANIdentifier: uint16(111), |
| 162 | } |
| 163 | |
| 164 | buffer := gopacket.NewSerializeBuffer() |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 165 | _ = gopacket.SerializeLayers( |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 166 | buffer, |
| 167 | gopacket.SerializeOptions{ |
| 168 | FixLengths: false, |
| 169 | }, |
| 170 | ethernetLayer, |
| 171 | dot1qLayer, |
| 172 | gopacket.Payload(rawBytes), |
| 173 | ) |
| 174 | |
| 175 | untaggedPkt := gopacket.NewPacket(buffer.Bytes(), layers.LayerTypeEthernet, gopacket.Default) |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame] | 176 | taggedPkt, err := packetHandlers.PopDoubleTag(untaggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 177 | if err != nil { |
| 178 | t.Fail() |
| 179 | t.Logf("Error in PushSingleTag: %v", err) |
| 180 | } |
| 181 | |
Matteo Scandolo | f6f3a7f | 2019-10-11 11:19:29 -0700 | [diff] [blame] | 182 | vlan, err := packetHandlers.GetVlanTag(taggedPkt) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 183 | assert.Equal(t, vlan, uint16(0)) |
| 184 | assert.Equal(t, err.Error(), "no-dot1q-layer-in-packet") |
| 185 | } |