46 lines
1.2 KiB
Go
46 lines
1.2 KiB
Go
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// Copyright 2012 Google, Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the LICENSE file in the root of the source
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// tree.
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package layers
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import (
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"encoding/binary"
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"github.com/google/gopacket"
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)
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// EtherIP is the struct for storing RFC 3378 EtherIP packet headers.
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type EtherIP struct {
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BaseLayer
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Version uint8
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Reserved uint16
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}
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// LayerType returns gopacket.LayerTypeEtherIP.
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func (e *EtherIP) LayerType() gopacket.LayerType { return LayerTypeEtherIP }
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// DecodeFromBytes decodes the given bytes into this layer.
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func (e *EtherIP) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
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e.Version = data[0] >> 4
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e.Reserved = binary.BigEndian.Uint16(data[:2]) & 0x0fff
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e.BaseLayer = BaseLayer{data[:2], data[2:]}
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return nil
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}
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// CanDecode returns the set of layer types that this DecodingLayer can decode.
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func (e *EtherIP) CanDecode() gopacket.LayerClass {
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return LayerTypeEtherIP
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}
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// NextLayerType returns the layer type contained by this DecodingLayer.
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func (e *EtherIP) NextLayerType() gopacket.LayerType {
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return LayerTypeEthernet
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}
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func decodeEtherIP(data []byte, p gopacket.PacketBuilder) error {
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e := &EtherIP{}
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return decodingLayerDecoder(e, data, p)
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}
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