diff options
Diffstat (limited to 'vendor/github.com/google/gopacket/layers/geneve.go')
-rw-r--r-- | vendor/github.com/google/gopacket/layers/geneve.go | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/vendor/github.com/google/gopacket/layers/geneve.go b/vendor/github.com/google/gopacket/layers/geneve.go deleted file mode 100644 index 6dc05cf..0000000 --- a/vendor/github.com/google/gopacket/layers/geneve.go +++ /dev/null @@ -1,98 +0,0 @@ -// 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" - - "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[0:1]) - opt.Type = data[2] - opt.Flags = data[3] >> 4 - opt.Length = data[3] & 0xf - - copy(opt.Data, data[4:opt.Length]) - - return opt, 4 + opt.Length -} - -func (gn *Geneve) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error { - gn.Version = data[0] >> 7 - gn.OptionsLength = data[0] & 0x3f - - 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), gn.OptionsLength - for length > 0 { - opt, len := decodeGeneveOption(data[offset:], gn) - gn.Options = append(gn.Options, opt) - - length -= 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) -} |