| /* |
| * 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" |
| |
| "github.com/google/gopacket" |
| "github.com/google/gopacket/layers" |
| ) |
| |
| // GenerateCaptureProtocols generates "Protocol Filter/Capture Protocols" message |
| func GenerateCaptureProtocols(ocInstance uint32) gopacket.SerializableLayer { |
| |
| return &SetGenerteCaptureProtocolsreq{ |
| // IEEE 1904.2 |
| Opcode: 0x03, |
| // OAM Protocol |
| Flags: 0x0050, |
| OAMPDUCode: 0xfe, |
| OUId: []byte{0x2a, 0xea, 0x15}, |
| // TiBit OLT Management Interface |
| TOMIOpcode: 0x03, |
| // Correlation Tag |
| CTBranch: 0x0c, |
| CTType: 0x0c7a, |
| CTLength: 4, |
| CTInstance: getOltInstance(), |
| // Object Context |
| OCBranch: 0x0c, |
| OCType: 0x0cff, |
| OCLength: 4, |
| OCInstance: ocInstance, |
| // Vc |
| VcBranch: 0xcf, |
| VcLeaf: 0x0003, |
| VcLength: 5, |
| // EC |
| ECLength: 4, |
| //Protocol |
| ProtocolLength: 1, |
| ProtocolValue: 0x01, |
| //Action |
| ActionLength: 1, |
| ActionValue: 0x01, |
| // End |
| EndBranch: 0x00, |
| } |
| |
| } |
| |
| // SetGenerteCaptureProtocolsreq is a structure for a request of "Protocol Filter/Capture Protocols" message |
| type SetGenerteCaptureProtocolsreq 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 |
| ProtocolLength uint8 |
| ProtocolValue uint8 |
| ActionLength uint8 |
| ActionValue uint8 |
| EndBranch uint8 |
| } |
| |
| // Len returns the length of SetGenerteCaptureProtocolsreq |
| func (d *SetGenerteCaptureProtocolsreq) Len() int { |
| return 21 + int(d.CTLength) + int(d.OCLength) + int(d.VcLength) |
| } |
| |
| // LayerType returns the ethernet type of SetGenerteCaptureProtocolsreq |
| func (d *SetGenerteCaptureProtocolsreq) LayerType() gopacket.LayerType { |
| return layers.LayerTypeEthernet |
| } |
| |
| // SerializeTo serializes a data structure to byte arrays |
| func (d *SetGenerteCaptureProtocolsreq) 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++ |
| data[i] = byte(d.ECLength) |
| i++ |
| data[i] = byte(d.ProtocolLength) |
| i++ |
| data[i] = byte(d.ProtocolValue) |
| i++ |
| data[i] = byte(d.ActionLength) |
| i++ |
| data[i] = byte(d.ActionValue) |
| i++ |
| data[i] = byte(d.EndBranch) |
| |
| return nil |
| |
| } |
| |
| // Decode decodes byte arrays to a data structure |
| func (d *SetGenerteCaptureProtocolsreq) 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.VcLength = data[i] |
| i++ |
| d.ECLength = data[i] |
| i++ |
| d.ProtocolLength = data[i] |
| i++ |
| d.ProtocolValue = data[i] |
| i++ |
| d.ActionLength = data[i] |
| i++ |
| d.ActionValue = data[i] |
| i++ |
| d.EndBranch = data[i] |
| |
| return nil |
| } |