diff options
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/pppoe.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/pppoe.go')
-rw-r--r-- | vendor/github.com/google/gopacket/layers/pppoe.go | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/vendor/github.com/google/gopacket/layers/pppoe.go b/vendor/github.com/google/gopacket/layers/pppoe.go new file mode 100644 index 0000000..14cd63a --- /dev/null +++ b/vendor/github.com/google/gopacket/layers/pppoe.go @@ -0,0 +1,60 @@ +// 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" +) + +// PPPoE is the layer for PPPoE encapsulation headers. +type PPPoE struct { + BaseLayer + Version uint8 + Type uint8 + Code PPPoECode + SessionId uint16 + Length uint16 +} + +// LayerType returns gopacket.LayerTypePPPoE. +func (p *PPPoE) LayerType() gopacket.LayerType { + return LayerTypePPPoE +} + +// decodePPPoE decodes the PPPoE header (see http://tools.ietf.org/html/rfc2516). +func decodePPPoE(data []byte, p gopacket.PacketBuilder) error { + pppoe := &PPPoE{ + Version: data[0] >> 4, + Type: data[0] & 0x0F, + Code: PPPoECode(data[1]), + SessionId: binary.BigEndian.Uint16(data[2:4]), + Length: binary.BigEndian.Uint16(data[4:6]), + } + pppoe.BaseLayer = BaseLayer{data[:6], data[6 : 6+pppoe.Length]} + p.AddLayer(pppoe) + return p.NextDecoder(pppoe.Code) +} + +// SerializeTo writes the serialized form of this layer into the +// SerializationBuffer, implementing gopacket.SerializableLayer. +// See the docs for gopacket.SerializableLayer for more info. +func (p *PPPoE) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error { + payload := b.Bytes() + bytes, err := b.PrependBytes(6) + if err != nil { + return err + } + bytes[0] = (p.Version << 4) | p.Type + bytes[1] = byte(p.Code) + binary.BigEndian.PutUint16(bytes[2:], p.SessionId) + if opts.FixLengths { + p.Length = uint16(len(payload)) + } + binary.BigEndian.PutUint16(bytes[4:], p.Length) + return nil +} |