| /* |
| * 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" |
| ) |
| |
| // TOAMGetRequest is a structure for GET request of TOAM message |
| type TOAMGetRequest 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 |
| VdBranch uint8 |
| VdLeaf uint16 |
| EndBranch uint8 |
| } |
| |
| // String returns the string expression of TOAMGetRequest |
| func (d *TOAMGetRequest) String() string { |
| message := fmt.Sprintf("Opcode:%02x, Flags:%04x, OAMPDUCode:%02x, OUId:%v", d.Opcode, d.Flags, d.OAMPDUCode, hex.EncodeToString(d.OUId)) |
| message = fmt.Sprintf("%s, TOMIOpcode:%02x", message, d.TOMIOpcode) |
| message = fmt.Sprintf("%s, CTBranch:%02x, CTType:%04x, CTLength:%02x, CTInstance:%08x", message, d.CTBranch, d.CTType, d.CTLength, d.CTInstance) |
| message = fmt.Sprintf("%s, OCBranch:%02x, OCType:%04x, OCLength:%02x, OCInstance:%08x", message, d.OCBranch, d.OCType, d.OCLength, d.OCInstance) |
| message = fmt.Sprintf("%s, VdBranch:%02x, VdLeaf:%04x, EndBranch:%02x", message, d.VdBranch, d.VdLeaf, d.EndBranch) |
| return message |
| } |
| |
| // Len returns the length of TOAMGetRequest |
| func (d *TOAMGetRequest) Len() int { |
| return 29 |
| } |
| |
| // LayerType returns the ethernet type of TOAMGetRequest |
| func (d *TOAMGetRequest) LayerType() gopacket.LayerType { return layers.LayerTypeEthernet } |
| |
| // SerializeTo serializes a data structure to byte arrays |
| func (d *TOAMGetRequest) 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.VdBranch) |
| i++ |
| binary.BigEndian.PutUint16(data[i:i+2], d.VdLeaf) |
| i += 2 |
| data[i] = byte(d.EndBranch) |
| |
| return nil |
| } |
| |
| // TOAMGetResponse is a structure for GET response of TOAM message |
| type TOAMGetResponse 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 |
| } |
| |
| // String returns the string expression of TOAMGetResponse |
| func (d *TOAMGetResponse) String() string { |
| message := fmt.Sprintf("Opcode:%02x, Flags:%04x, OAMPDUCode:%02x, OUId:%v", d.Opcode, d.Flags, d.OAMPDUCode, hex.EncodeToString(d.OUId)) |
| message = fmt.Sprintf("%s, TOMIOpcode:%02x", message, d.TOMIOpcode) |
| message = fmt.Sprintf("%s, CTBranch:%02x, CTType:%04x, CTLength:%02x, CTInstance:%08x", message, d.CTBranch, d.CTType, d.CTLength, d.CTInstance) |
| message = fmt.Sprintf("%s, OCBranch:%02x, OCType:%04x, OCLength:%02x, OCInstance:%08x", message, d.OCBranch, d.OCType, d.OCLength, d.OCInstance) |
| message = fmt.Sprintf("%s, VcBranch:%02x, VcLeaf:%04x, VcLength:%02x", message, d.VcBranch, d.VcLeaf, d.VcLength) |
| return message |
| } |
| |
| // Len returns the length of TOAMGetResponse |
| func (d *TOAMGetResponse) Len() int { |
| return 28 |
| } |
| |
| // LayerType returns the ethernet type of TOAMGetResponse |
| func (d *TOAMGetResponse) LayerType() gopacket.LayerType { return layers.LayerTypeEthernet } |
| |
| // Decode decodes byte arrays to a data structure |
| func (d *TOAMGetResponse) Decode(data []byte) { |
| 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.VcLength = data[i] |
| } |