Finish porting to ONF infrastructure
- change of imports
- Adding vendor folder
- licensing
Change-Id: If2e7ed27d603668b848ae58c135e94a8db13a9e2
diff --git a/vendor/github.com/google/gopacket/layers/geneve.go b/vendor/github.com/google/gopacket/layers/geneve.go
new file mode 100644
index 0000000..72fe7c7
--- /dev/null
+++ b/vendor/github.com/google/gopacket/layers/geneve.go
@@ -0,0 +1,110 @@
+// Copyright 2016 Google, Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree.
+
+package layers
+
+import (
+ "encoding/binary"
+ "errors"
+
+ "github.com/google/gopacket"
+)
+
+// Geneve is specifed here https://tools.ietf.org/html/draft-ietf-nvo3-geneve-03
+// Geneve Header:
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// |Ver| Opt Len |O|C| Rsvd. | Protocol Type |
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// | Virtual Network Identifier (VNI) | Reserved |
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// | Variable Length Options |
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+type Geneve struct {
+ BaseLayer
+ Version uint8 // 2 bits
+ OptionsLength uint8 // 6 bits
+ OAMPacket bool // 1 bits
+ CriticalOption bool // 1 bits
+ Protocol EthernetType // 16 bits
+ VNI uint32 // 24bits
+ Options []*GeneveOption
+}
+
+// Geneve Tunnel Options
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// | Option Class | Type |R|R|R| Length |
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// | Variable Option Data |
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+type GeneveOption struct {
+ Class uint16 // 16 bits
+ Type uint8 // 8 bits
+ Flags uint8 // 3 bits
+ Length uint8 // 5 bits
+ Data []byte
+}
+
+// LayerType returns LayerTypeGeneve
+func (gn *Geneve) LayerType() gopacket.LayerType { return LayerTypeGeneve }
+
+func decodeGeneveOption(data []byte, gn *Geneve) (*GeneveOption, uint8) {
+ opt := &GeneveOption{}
+
+ opt.Class = binary.BigEndian.Uint16(data[0:2])
+ opt.Type = data[2]
+ opt.Flags = data[3] >> 4
+ opt.Length = (data[3]&0xf)*4 + 4
+
+ opt.Data = make([]byte, opt.Length-4)
+ copy(opt.Data, data[4:opt.Length])
+
+ return opt, opt.Length
+}
+
+func (gn *Geneve) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
+ if len(data) < 7 {
+ df.SetTruncated()
+ return errors.New("geneve packet too short")
+ }
+
+ gn.Version = data[0] >> 7
+ gn.OptionsLength = (data[0] & 0x3f) * 4
+
+ gn.OAMPacket = data[1]&0x80 > 0
+ gn.CriticalOption = data[1]&0x40 > 0
+ gn.Protocol = EthernetType(binary.BigEndian.Uint16(data[2:4]))
+
+ var buf [4]byte
+ copy(buf[1:], data[4:7])
+ gn.VNI = binary.BigEndian.Uint32(buf[:])
+
+ offset, length := uint8(8), int32(gn.OptionsLength)
+ if len(data) < int(length+7) {
+ df.SetTruncated()
+ return errors.New("geneve packet too short")
+ }
+
+ for length > 0 {
+ opt, len := decodeGeneveOption(data[offset:], gn)
+ gn.Options = append(gn.Options, opt)
+
+ length -= int32(len)
+ offset += len
+ }
+
+ gn.BaseLayer = BaseLayer{data[:offset], data[offset:]}
+
+ return nil
+}
+
+func (gn *Geneve) NextLayerType() gopacket.LayerType {
+ return gn.Protocol.LayerType()
+}
+
+func decodeGeneve(data []byte, p gopacket.PacketBuilder) error {
+ gn := &Geneve{}
+ return decodingLayerDecoder(gn, data, p)
+}