| /* |
| * Copyright 2020-present Open Networking Foundation |
| |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package l2oam |
| |
| import ( |
| "encoding/binary" |
| "encoding/hex" |
| "fmt" |
| |
| "github.com/google/gopacket" |
| "github.com/google/gopacket/layers" |
| ) |
| |
| // GenerateTrafficControlTrafficProfile generates "Traffic Control/Traffic Profile" message |
| func GenerateTrafficControlTrafficProfile(trafficControl []byte, trafficProfile []byte) gopacket.SerializableLayer { |
| |
| tibitData := &setTrafficControlTrafficProfileReq{ |
| // IEEE 1904.2 |
| Opcode: 0x03, |
| // OMI Protocol |
| Flags: 0x0050, |
| OAMPDUCode: 0xfe, |
| OUId: []byte{0x2a, 0xea, 0x15}, // Organizationally Unique Identifier: 2a:ea:15 (Tibit Communications) |
| // TiBiT OLT Management Interface |
| TOMIOpcode: 0x03, |
| // Correlation Tag |
| CTBranch: 0x0c, |
| CTType: 0x0c7a, |
| CTLength: 4, |
| CTInstance: getOltInstance(), |
| // Object Context |
| OCBranch: 0x0c, |
| OCType: 0x07c0, |
| OCLength: 4, |
| OCInstance: trafficControl, |
| // Vc |
| VcBranch: 0x7c, |
| VcLeaf: 0x0002, |
| VcLength: 0x09, |
| |
| //EC OC |
| ECOC: []ECOCTrafficControlTrafficProfile{{EcOcLength: 8, EcOcBranch: 0x0c, EcOcType: 0x070f, EcOcLength2: 4, EcOcInstance: trafficProfile}}, |
| |
| // End |
| EndBranch: 0x00, |
| } |
| |
| return tibitData |
| } |
| |
| type setTrafficControlTrafficProfileReq struct { |
| layers.BaseLayer |
| Opcode uint8 |
| Flags uint16 |
| OAMPDUCode uint8 |
| OUId []byte // Organizationally Unique Identifier: 2a:ea:15 (Tibit Communications) |
| TOMIOpcode uint8 |
| CTBranch uint8 |
| CTType uint16 |
| CTLength uint8 |
| CTInstance uint32 |
| OCBranch uint8 |
| OCType uint16 |
| OCLength uint8 |
| OCInstance []byte |
| VcBranch uint8 |
| VcLeaf uint16 |
| VcLength uint8 |
| |
| ECOC []ECOCTrafficControlTrafficProfile |
| |
| EndBranch uint8 |
| } |
| |
| // ECOCTrafficControlTrafficProfile is a structure for Vc-EC OC object |
| type ECOCTrafficControlTrafficProfile struct { |
| EcOcLength uint8 |
| EcOcBranch uint8 |
| EcOcType uint16 |
| EcOcLength2 uint8 |
| EcOcInstance []byte |
| } |
| |
| // String returns the string expression of setTrafficControlTrafficProfileReq |
| func (d *setTrafficControlTrafficProfileReq) String() string { |
| message := fmt.Sprintf("Opcode:%x, Flags:%x, OAMPDUCode:%x, OUId:%v", d.Opcode, d.Flags, d.OAMPDUCode, hex.EncodeToString(d.OUId)) |
| message = fmt.Sprintf("%s, TOMIOpcode:%x", message, d.TOMIOpcode) |
| message = fmt.Sprintf("%s, CTBranch:%x, CTType:%x, CTLength:%x, CTInstance:%x", message, d.CTBranch, d.CTType, d.CTLength, d.CTInstance) |
| message = fmt.Sprintf("%s, OCBranch:%x, OCType:%x, OCLength:%x, OCInstance:%x", message, d.OCBranch, d.OCType, d.OCLength, d.OCInstance) |
| message = fmt.Sprintf("%s, VcBranch:%x, VcLeaf:%x, VcLength:%x", message, d.VcBranch, d.VcLeaf, d.VcLength) |
| for _, ecoc := range d.ECOC { |
| message = fmt.Sprintf("%s, EcOcLength:%x, EcOcBranch:%v, EcOcType:%x, EcOcLength2:%x, EcOcInstance:%x, ", message, ecoc.EcOcLength, ecoc.EcOcBranch, ecoc.EcOcType, ecoc.EcOcLength2, hex.EncodeToString(ecoc.EcOcInstance)) |
| } |
| message = fmt.Sprintf("%s, EndBranch:%x", message, d.EndBranch) |
| return message |
| } |
| |
| // Len returns the length of setTrafficControlTrafficProfileReq |
| func (d *setTrafficControlTrafficProfileReq) Len() int { |
| return 21 + int(d.CTLength) + int(d.OCLength) + int(d.VcLength) |
| } |
| |
| // LayerType returns the ethernet type of setTrafficControlTrafficProfileReq |
| func (d *setTrafficControlTrafficProfileReq) LayerType() gopacket.LayerType { |
| return layers.LayerTypeEthernet |
| } |
| |
| // SerializeTo serializes a data structure to byte arrays |
| func (d *setTrafficControlTrafficProfileReq) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error { |
| plen := int(d.Len()) |
| data, err := b.PrependBytes(plen) |
| if err != nil { |
| return err |
| } |
| |
| i := 0 |
| data[i] = byte(d.Opcode) |
| i++ |
| binary.BigEndian.PutUint16(data[i:i+2], d.Flags) |
| i += 2 |
| data[i] = byte(d.OAMPDUCode) |
| i++ |
| copy(data[i:i+len(d.OUId)], d.OUId) |
| i += len(d.OUId) |
| data[i] = byte(d.TOMIOpcode) |
| i++ |
| data[i] = byte(d.CTBranch) |
| i++ |
| binary.BigEndian.PutUint16(data[i:i+2], d.CTType) |
| i += 2 |
| data[i] = byte(d.CTLength) |
| i++ |
| binary.BigEndian.PutUint32(data[i:i+4], d.CTInstance) |
| i += 4 |
| data[i] = byte(d.OCBranch) |
| i++ |
| binary.BigEndian.PutUint16(data[i:i+2], d.OCType) |
| i += 2 |
| data[i] = byte(d.OCLength) |
| i++ |
| copy(data[i:i+4], d.OCInstance) |
| i += 4 |
| data[i] = byte(d.VcBranch) |
| i++ |
| binary.BigEndian.PutUint16(data[i:i+2], d.VcLeaf) |
| i += 2 |
| data[i] = byte(d.VcLength) |
| i++ |
| for _, ecoc := range d.ECOC { |
| nextIndex := SerializeECOC(&ecoc, data, i) |
| i = nextIndex |
| } |
| |
| data[i] = byte(d.EndBranch) |
| |
| return nil |
| } |
| |
| // SerializeECOC serializes a "EC OC" structure to byte arrays |
| func SerializeECOC(ecoc *ECOCTrafficControlTrafficProfile, data []byte, startIndex int) int { |
| i := startIndex |
| data[i] = byte(ecoc.EcOcLength) |
| i++ |
| data[i] = byte(ecoc.EcOcBranch) |
| i++ |
| binary.BigEndian.PutUint16(data[i:i+2], ecoc.EcOcType) |
| i += 2 |
| data[i] = byte(ecoc.EcOcLength2) |
| i++ |
| copy(data[i:i+int(ecoc.EcOcLength2)], ecoc.EcOcInstance) |
| i += int(ecoc.EcOcLength2) |
| |
| return i |
| } |