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// Copyright 2012 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"
)
// EtherIP is the struct for storing RFC 3378 EtherIP packet headers.
type EtherIP struct {
BaseLayer
Version uint8
Reserved uint16
}
// LayerType returns gopacket.LayerTypeEtherIP.
func (e *EtherIP) LayerType() gopacket.LayerType { return LayerTypeEtherIP }
// DecodeFromBytes decodes the given bytes into this layer.
func (e *EtherIP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
e.Version = data[0] >> 4
e.Reserved = binary.BigEndian.Uint16(data[:2]) & 0x0fff
e.BaseLayer = BaseLayer{data[:2], data[2:]}
return nil
}
// CanDecode returns the set of layer types that this DecodingLayer can decode.
func (e *EtherIP) CanDecode() gopacket.LayerClass {
return LayerTypeEtherIP
}
// NextLayerType returns the layer type contained by this DecodingLayer.
func (e *EtherIP) NextLayerType() gopacket.LayerType {
return LayerTypeEthernet
}
func decodeEtherIP(data []byte, p gopacket.PacketBuilder) error {
e := &EtherIP{}
return decodingLayerDecoder(e, data, p)
}