Takahiro Suzuki | d7bf820 | 2020-12-17 20:21:59 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2020-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 | |
| 17 | package l2oam |
| 18 | |
| 19 | import ( |
| 20 | "encoding/binary" |
| 21 | |
| 22 | "github.com/google/gopacket" |
| 23 | "github.com/google/gopacket/layers" |
| 24 | ) |
| 25 | |
| 26 | // GenerateIngressPort generates "Protocol Filter/Ingress Port" message |
| 27 | func GenerateIngressPort(OCInstance uint32, isponport bool) gopacket.SerializableLayer { |
| 28 | |
| 29 | var ponPort uint16 = 0x0007 |
| 30 | |
| 31 | if !isponport { |
| 32 | ponPort = 0x0e07 |
| 33 | } |
| 34 | |
| 35 | return &SetGenerteIngressPortreq{ |
| 36 | //IEEE 1904.2 |
| 37 | Opcode: 0x03, |
| 38 | Flags: 0x0050, |
| 39 | OAMPDUCode: 0xfe, |
| 40 | OUId: []byte{0x2a, 0xea, 0x15}, |
| 41 | //TiBiT OLT Management Interface |
| 42 | TOMIOpcode: 0x03, |
| 43 | //Correlation Tag |
| 44 | CTBranch: 0x0c, |
| 45 | CTType: 0x0c7a, |
| 46 | CTLength: 4, |
| 47 | CTInstance: getOltInstance(), |
| 48 | //Object Context |
| 49 | OCBranch: 0x0c, |
| 50 | OCType: 0x0cff, |
| 51 | OCLength: 4, |
| 52 | OCInstance: OCInstance, |
| 53 | //Vc |
| 54 | VcBranch: 0xcf, |
| 55 | VcLeaf: 0x0002, |
| 56 | VcLength: 9, |
| 57 | //EC OC |
| 58 | ECOCLength1: 8, |
| 59 | ECOCBranch: 0x0c, |
| 60 | ECOCType: ponPort, |
| 61 | ECOCLength2: 4, |
| 62 | ECOCInstance: 0x00000000, |
| 63 | //End |
| 64 | EndBranch: 0x00, |
| 65 | } |
| 66 | |
| 67 | } |
| 68 | |
| 69 | // SetGenerteIngressPortreq is a structure for a reqest of "Protocol Filter/Ingress Port" message |
| 70 | type SetGenerteIngressPortreq struct { |
| 71 | layers.BaseLayer |
| 72 | Opcode uint8 |
| 73 | Flags uint16 |
| 74 | OAMPDUCode uint8 |
| 75 | OUId []byte // Organizationally Unique Identifier: 2a:ea:15 (Tibit Communications) |
| 76 | TOMIOpcode uint8 |
| 77 | CTBranch uint8 |
| 78 | CTType uint16 |
| 79 | CTLength uint8 |
| 80 | CTInstance uint32 |
| 81 | OCBranch uint8 |
| 82 | OCType uint16 |
| 83 | OCLength uint8 |
| 84 | OCInstance uint32 |
| 85 | VcBranch uint8 |
| 86 | VcLeaf uint16 |
| 87 | VcLength uint8 |
| 88 | ECOCLength1 uint8 |
| 89 | ECOCBranch uint8 |
| 90 | ECOCType uint16 |
| 91 | ECOCLength2 uint8 |
| 92 | ECOCInstance uint32 |
| 93 | EndBranch uint8 |
| 94 | } |
| 95 | |
| 96 | // Len returns the length of SetGenerteIngressPortreq |
| 97 | func (d *SetGenerteIngressPortreq) Len() int { |
| 98 | return 21 + int(d.CTLength) + int(d.OCLength) + int(d.VcLength) |
| 99 | } |
| 100 | |
| 101 | // LayerType returns the ethernet type of SetGenerteIngressPortreq |
| 102 | func (d *SetGenerteIngressPortreq) LayerType() gopacket.LayerType { |
| 103 | return layers.LayerTypeEthernet |
| 104 | } |
| 105 | |
| 106 | // SerializeTo serializes a data structure to byte arrays |
| 107 | func (d *SetGenerteIngressPortreq) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error { |
| 108 | plen := int(d.Len()) |
| 109 | data, err := b.PrependBytes(plen) |
| 110 | if err != nil { |
| 111 | return err |
| 112 | } |
| 113 | |
| 114 | i := 0 |
| 115 | data[i] = byte(d.Opcode) |
| 116 | i++ |
| 117 | binary.BigEndian.PutUint16(data[i:i+2], d.Flags) |
| 118 | i += 2 |
| 119 | data[i] = byte(d.OAMPDUCode) |
| 120 | i++ |
| 121 | copy(data[i:i+len(d.OUId)], d.OUId) |
| 122 | i += len(d.OUId) |
| 123 | data[i] = byte(d.TOMIOpcode) |
| 124 | i++ |
| 125 | data[i] = byte(d.CTBranch) |
| 126 | i++ |
| 127 | binary.BigEndian.PutUint16(data[i:i+2], d.CTType) |
| 128 | i += 2 |
| 129 | data[i] = byte(d.CTLength) |
| 130 | i++ |
| 131 | binary.BigEndian.PutUint32(data[i:i+4], d.CTInstance) |
| 132 | i += 4 |
| 133 | data[i] = byte(d.OCBranch) |
| 134 | i++ |
| 135 | binary.BigEndian.PutUint16(data[i:i+2], d.OCType) |
| 136 | i += 2 |
| 137 | data[i] = byte(d.OCLength) |
| 138 | i++ |
| 139 | binary.BigEndian.PutUint32(data[i:i+4], d.OCInstance) |
| 140 | i += 4 |
| 141 | data[i] = byte(d.VcBranch) |
| 142 | i++ |
| 143 | binary.BigEndian.PutUint16(data[i:i+2], d.VcLeaf) |
| 144 | i += 2 |
| 145 | data[i] = byte(d.VcLength) |
| 146 | i++ |
| 147 | data[i] = byte(d.ECOCLength1) |
| 148 | i++ |
| 149 | data[i] = byte(d.ECOCBranch) |
| 150 | i++ |
| 151 | binary.BigEndian.PutUint16(data[i:i+2], d.ECOCType) |
| 152 | i += 2 |
| 153 | data[i] = byte(d.ECOCLength2) |
| 154 | i++ |
| 155 | binary.BigEndian.PutUint32(data[i:i+4], d.ECOCInstance) |
| 156 | i += 4 |
| 157 | data[i] = byte(d.EndBranch) |
| 158 | |
| 159 | return nil |
| 160 | |
| 161 | } |
| 162 | |
| 163 | // Decode decodes byte arrays to a data structure |
| 164 | func (d *SetGenerteIngressPortreq) Decode(data []byte) error { |
| 165 | i := 0 |
| 166 | d.Opcode = data[i] |
| 167 | i++ |
| 168 | d.Flags = binary.BigEndian.Uint16(data[i : i+2]) |
| 169 | i += 2 |
| 170 | d.OAMPDUCode = data[i] |
| 171 | i++ |
| 172 | d.OUId = data[i : i+3] |
| 173 | i += len(d.OUId) |
| 174 | d.TOMIOpcode = data[i] |
| 175 | i++ |
| 176 | d.CTBranch = data[i] |
| 177 | i++ |
| 178 | d.CTType = binary.BigEndian.Uint16(data[i : i+2]) |
| 179 | i += 2 |
| 180 | d.CTLength = data[i] |
| 181 | i++ |
| 182 | d.CTInstance = binary.BigEndian.Uint32(data[i : i+4]) |
| 183 | i += 4 |
| 184 | d.OCBranch = data[i] |
| 185 | i++ |
| 186 | d.OCType = binary.BigEndian.Uint16(data[i : i+2]) |
| 187 | i += 2 |
| 188 | d.OCLength = data[i] |
| 189 | i++ |
| 190 | d.OCInstance = binary.BigEndian.Uint32(data[i : i+4]) |
| 191 | i += 4 |
| 192 | d.VcBranch = data[i] |
| 193 | i++ |
| 194 | d.VcLeaf = binary.BigEndian.Uint16(data[i : i+2]) |
| 195 | i += 2 |
| 196 | d.VcLength = data[i] |
| 197 | i++ |
| 198 | d.ECOCLength1 = data[i] |
| 199 | i++ |
| 200 | d.ECOCBranch = data[i] |
| 201 | i++ |
| 202 | d.ECOCType = binary.BigEndian.Uint16(data[i : i+2]) |
| 203 | i += 2 |
| 204 | d.ECOCLength2 = data[i] |
| 205 | i++ |
| 206 | d.ECOCInstance = binary.BigEndian.Uint32(data[i : i+4]) |
| 207 | i += 4 |
| 208 | d.EndBranch = data[i] |
| 209 | |
| 210 | return nil |
| 211 | } |