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author | Milan Lenco <milan.lenco@pantheon.tech> | 2017-10-11 16:40:58 +0200 |
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committer | Milan Lenco <milan.lenco@pantheon.tech> | 2017-10-13 08:40:37 +0200 |
commit | 3f1edad4e6ba0a7876750aea55507fae14d8badf (patch) | |
tree | a473997249d9ba7deb70b1076d14e4c4ed029a43 /vendor/github.com/google/gopacket/layers/base.go | |
parent | 8b66677c2382a8e739d437621de4473d5ec0b9f1 (diff) |
ODPM 266: Go-libmemif + 2 examples.
Change-Id: Icdb9b9eb2314eff6c96afe7996fcf2728291de4a
Signed-off-by: Milan Lenco <milan.lenco@pantheon.tech>
Diffstat (limited to 'vendor/github.com/google/gopacket/layers/base.go')
-rw-r--r-- | vendor/github.com/google/gopacket/layers/base.go | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/vendor/github.com/google/gopacket/layers/base.go b/vendor/github.com/google/gopacket/layers/base.go new file mode 100644 index 0000000..cd59b46 --- /dev/null +++ b/vendor/github.com/google/gopacket/layers/base.go @@ -0,0 +1,52 @@ +// 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 ( + "github.com/google/gopacket" +) + +// BaseLayer is a convenience struct which implements the LayerData and +// LayerPayload functions of the Layer interface. +type BaseLayer struct { + // Contents is the set of bytes that make up this layer. IE: for an + // Ethernet packet, this would be the set of bytes making up the + // Ethernet frame. + Contents []byte + // Payload is the set of bytes contained by (but not part of) this + // Layer. Again, to take Ethernet as an example, this would be the + // set of bytes encapsulated by the Ethernet protocol. + Payload []byte +} + +// LayerContents returns the bytes of the packet layer. +func (b *BaseLayer) LayerContents() []byte { return b.Contents } + +// LayerPayload returns the bytes contained within the packet layer. +func (b *BaseLayer) LayerPayload() []byte { return b.Payload } + +type layerDecodingLayer interface { + gopacket.Layer + DecodeFromBytes([]byte, gopacket.DecodeFeedback) error + NextLayerType() gopacket.LayerType +} + +func decodingLayerDecoder(d layerDecodingLayer, data []byte, p gopacket.PacketBuilder) error { + err := d.DecodeFromBytes(data, p) + if err != nil { + return err + } + p.AddLayer(d) + next := d.NextLayerType() + if next == gopacket.LayerTypeZero { + return nil + } + return p.NextDecoder(next) +} + +// hacky way to zero out memory... there must be a better way? +var lotsOfZeros [1024]byte |