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 | "encoding/hex" |
| 22 | "fmt" |
| 23 | |
| 24 | "github.com/google/gopacket" |
| 25 | "github.com/google/gopacket/layers" |
| 26 | ) |
| 27 | |
| 28 | // GenerateSetDefaultOutlet generates "Default Outlet" message |
| 29 | func GenerateSetDefaultOutlet(oc *TomiObjectContext, onuID *TomiObjectContext) gopacket.SerializableLayer { |
| 30 | |
| 31 | tibitData := &DefaultOutletRequest{ |
| 32 | // IEEE 1904.2 |
| 33 | Opcode: 0x03, |
| 34 | // OAM Protocol |
| 35 | Flags: 0x0050, |
| 36 | OAMPDUCode: 0xfe, |
| 37 | OUId: []byte{0x2a, 0xea, 0x15}, |
| 38 | // TiBit OLT Management Interface |
| 39 | TOMIOpcode: 0x03, |
| 40 | // Correlation Tag |
| 41 | CTBranch: 0x0c, |
| 42 | CTType: 0x0c7a, |
| 43 | CTLength: 4, |
| 44 | CTInstance: getOltInstance(), |
| 45 | // Object Context |
| 46 | OCBranch: oc.Branch, |
| 47 | OCType: oc.Type, |
| 48 | OCLength: oc.Length, |
| 49 | OCInstance: oc.Instance, |
| 50 | // Vc |
| 51 | VcBranch: 0x5d, |
| 52 | VcLeaf: 0x0003, |
| 53 | VcLength: 0x09, |
| 54 | // Default Outlet |
| 55 | DOLength: 8, |
| 56 | DOBranch: 0x0c, |
| 57 | DOType: 0x0011, |
| 58 | DOValLength: 4, |
| 59 | DOInstance: onuID.Instance, |
| 60 | // End |
| 61 | EndBranch: 0x00, |
| 62 | } |
| 63 | |
| 64 | return tibitData |
| 65 | } |
| 66 | |
| 67 | // DefaultOutletRequest is a structure for a request of "Default Outlet" message |
| 68 | type DefaultOutletRequest struct { |
| 69 | layers.BaseLayer |
| 70 | Opcode uint8 |
| 71 | Flags uint16 |
| 72 | OAMPDUCode uint8 |
| 73 | OUId []byte // Organizationally Unique Identifier: 2a:ea:15 (Tibit Communications) |
| 74 | TOMIOpcode uint8 |
| 75 | CTBranch uint8 |
| 76 | CTType uint16 |
| 77 | CTLength uint8 |
| 78 | CTInstance uint32 |
| 79 | OCBranch uint8 |
| 80 | OCType uint16 |
| 81 | OCLength uint8 |
| 82 | OCInstance uint32 |
| 83 | VcBranch uint8 |
| 84 | VcLeaf uint16 |
| 85 | VcLength uint8 |
| 86 | DOLength uint8 |
| 87 | DOBranch uint8 |
| 88 | DOType uint16 |
| 89 | DOValLength uint8 |
| 90 | DOInstance uint32 |
| 91 | EndBranch uint8 |
| 92 | } |
| 93 | |
| 94 | // String returns the string expression of DefaultOutletRequest |
| 95 | func (d *DefaultOutletRequest) String() string { |
| 96 | message := fmt.Sprintf("Opcode:%x, Flags:%x, OAMPDUCode:%x, OUId:%v", d.Opcode, d.Flags, d.OAMPDUCode, hex.EncodeToString(d.OUId)) |
| 97 | message = fmt.Sprintf("%s, TOMIOpcode:%x", message, d.TOMIOpcode) |
| 98 | message = fmt.Sprintf("%s, CTBranch:%x, CTType:%x, CTLength:%x, CTInstance:%x", message, d.CTBranch, d.CTType, d.CTLength, d.CTInstance) |
| 99 | message = fmt.Sprintf("%s, OCBranch:%x, OCType:%x, OCLength:%x, OCInstance:%x", message, d.OCBranch, d.OCType, d.OCLength, d.OCInstance) |
| 100 | message = fmt.Sprintf("%s, VcBranch:%x, VcLeaf:%x, VcLength:%x", message, d.VcBranch, d.VcLeaf, d.VcLength) |
| 101 | message = fmt.Sprintf("%s, DOLength:%x, DOBranch:%x, DOType:%x, DOValLength:%x, DOInstance:%x", message, d.DOLength, d.DOBranch, d.DOType, d.DOValLength, d.DOInstance) |
| 102 | |
| 103 | return message |
| 104 | } |
| 105 | |
| 106 | // Len returns the length of DefaultOutletRequest |
| 107 | func (d *DefaultOutletRequest) Len() int { |
| 108 | return 38 |
| 109 | } |
| 110 | |
| 111 | // LayerType returns the ethernet type of DefaultOutletRequest |
| 112 | func (d *DefaultOutletRequest) LayerType() gopacket.LayerType { return layers.LayerTypeEthernet } |
| 113 | |
| 114 | // SerializeTo serializes a data structure to byte arrays |
| 115 | func (d *DefaultOutletRequest) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error { |
| 116 | plen := int(d.Len()) |
| 117 | data, err := b.PrependBytes(plen) |
| 118 | if err != nil { |
| 119 | return err |
| 120 | } |
| 121 | |
| 122 | i := 0 |
| 123 | data[i] = byte(d.Opcode) |
| 124 | i++ |
| 125 | binary.BigEndian.PutUint16(data[i:i+2], d.Flags) |
| 126 | i += 2 |
| 127 | data[i] = byte(d.OAMPDUCode) |
| 128 | i++ |
| 129 | copy(data[i:i+len(d.OUId)], d.OUId) |
| 130 | i += len(d.OUId) |
| 131 | data[i] = byte(d.TOMIOpcode) |
| 132 | i++ |
| 133 | data[i] = byte(d.CTBranch) |
| 134 | i++ |
| 135 | binary.BigEndian.PutUint16(data[i:i+2], d.CTType) |
| 136 | i += 2 |
| 137 | data[i] = byte(d.CTLength) |
| 138 | i++ |
| 139 | binary.BigEndian.PutUint32(data[i:i+4], d.CTInstance) |
| 140 | i += 4 |
| 141 | data[i] = byte(d.OCBranch) |
| 142 | i++ |
| 143 | binary.BigEndian.PutUint16(data[i:i+2], d.OCType) |
| 144 | i += 2 |
| 145 | data[i] = byte(d.OCLength) |
| 146 | i++ |
| 147 | binary.BigEndian.PutUint32(data[i:i+4], d.OCInstance) |
| 148 | i += 4 |
| 149 | data[i] = byte(d.VcBranch) |
| 150 | i++ |
| 151 | binary.BigEndian.PutUint16(data[i:i+2], d.VcLeaf) |
| 152 | i += 2 |
| 153 | data[i] = byte(d.VcLength) |
| 154 | i++ |
| 155 | data[i] = byte(d.DOLength) |
| 156 | i++ |
| 157 | data[i] = byte(d.DOBranch) |
| 158 | i++ |
| 159 | binary.BigEndian.PutUint16(data[i:i+2], d.DOType) |
| 160 | i += 2 |
| 161 | data[i] = byte(d.DOValLength) |
| 162 | i++ |
| 163 | binary.BigEndian.PutUint32(data[i:i+4], d.DOInstance) |
| 164 | i += 4 |
| 165 | data[i] = byte(d.EndBranch) |
| 166 | |
| 167 | return nil |
| 168 | } |