| /* |
| * 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" |
| ) |
| |
| // TOAMSetRequest is a structure for SET request of TOAM message |
| type TOAMSetRequest 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 uint32 |
| VcBranch uint8 |
| VcLeaf uint16 |
| VcLength uint8 |
| ECLength uint8 |
| ECValue []byte |
| ECList []ECValueSet |
| EndBranch uint8 |
| } |
| |
| // ECValueSet is a structure for Vc-EC object |
| type ECValueSet struct { |
| Length uint8 |
| Value []byte |
| } |
| |
| // String returns the string expression of TOAMSetRequest |
| func (d *TOAMSetRequest) 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) |
| message = fmt.Sprintf("%s, ECLength:%x, ECValue:%v, EndBranch:%x", message, d.ECLength, hex.EncodeToString(d.ECValue), d.EndBranch) |
| return message |
| } |
| |
| // Len returns the length of TOAMSetRequest |
| func (d *TOAMSetRequest) Len() int { |
| if d.VcLength != 0x80 { |
| return 22 + int(d.CTLength) + int(d.OCLength) + int(d.VcLength) |
| } |
| return 22 + int(d.CTLength) + int(d.OCLength) |
| |
| } |
| |
| // LayerType returns the ethernet type of TOAMSetRequest |
| func (d *TOAMSetRequest) LayerType() gopacket.LayerType { return layers.LayerTypeEthernet } |
| |
| // SerializeTo serializes a data structure to byte arrays |
| func (d *TOAMSetRequest) 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++ |
| binary.BigEndian.PutUint32(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++ |
| if d.VcLength != 0x80 { |
| // EC |
| data[i] = byte(d.ECLength) |
| i++ |
| copy(data[i:i+int(d.ECLength)], d.ECValue) |
| i += int(d.ECLength) |
| } |
| if d.ECList != nil { |
| for _, ecSet := range d.ECList { |
| data[i] = byte(ecSet.Length) |
| i++ |
| copy(data[i:i+int(ecSet.Length)], ecSet.Value) |
| i += int(ecSet.Length) |
| } |
| } |
| |
| data[i] = byte(d.EndBranch) |
| |
| return nil |
| } |
| |
| // TOAMSetResponse is a structure for SET response of TOAM message |
| type TOAMSetResponse 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 uint32 |
| VcBranch uint8 |
| VcLeaf uint16 |
| VcTOMIResCode uint8 |
| EndBranch uint8 |
| } |
| |
| // String returns the string expression of TOAMSetResponse |
| func (d *TOAMSetResponse) 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, VcTOMIResCode:%x, EndBranch:%x", message, d.VcBranch, d.VcLeaf, d.VcTOMIResCode, d.EndBranch) |
| return message |
| } |
| |
| // Len returns the length of TOAMSetResponse |
| func (d *TOAMSetResponse) Len() int { |
| return 34 + int(d.CTLength) + int(d.OCLength) |
| } |
| |
| // LayerType returns the ethernet type of TOAMSetResponse |
| func (d *TOAMSetResponse) LayerType() gopacket.LayerType { return layers.LayerTypeEthernet } |
| |
| // Decode decodes byte arrays to a data structure |
| func (d *TOAMSetResponse) Decode(data []byte) error { |
| i := 0 |
| d.Opcode = data[i] |
| i++ |
| d.Flags = binary.BigEndian.Uint16(data[i : i+2]) |
| i += 2 |
| d.OAMPDUCode = data[i] |
| i++ |
| d.OUId = data[i : i+3] |
| i += len(d.OUId) |
| d.TOMIOpcode = data[i] |
| i++ |
| d.CTBranch = data[i] |
| i++ |
| d.CTType = binary.BigEndian.Uint16(data[i : i+2]) |
| i += 2 |
| d.CTLength = data[i] |
| i++ |
| d.CTInstance = binary.BigEndian.Uint32(data[i : i+4]) |
| i += 4 |
| d.OCBranch = data[i] |
| i++ |
| d.OCType = binary.BigEndian.Uint16(data[i : i+2]) |
| i += 2 |
| d.OCLength = data[i] |
| i++ |
| d.OCInstance = binary.BigEndian.Uint32(data[i : i+4]) |
| i += 4 |
| d.VcBranch = data[i] |
| i++ |
| d.VcLeaf = binary.BigEndian.Uint16(data[i : i+2]) |
| i += 2 |
| d.VcTOMIResCode = data[i] |
| i++ |
| d.EndBranch = data[i] |
| |
| return nil |
| } |