[VOL-1349] EPON ONU adapter (package B)
Change-Id: I609ba349c429bc7e87c74b66bb1121841f9caef6
diff --git a/vendor/github.com/google/gopacket/layers/ethernet.go b/vendor/github.com/google/gopacket/layers/ethernet.go
new file mode 100644
index 0000000..b73748f
--- /dev/null
+++ b/vendor/github.com/google/gopacket/layers/ethernet.go
@@ -0,0 +1,123 @@
+// Copyright 2012 Google, Inc. All rights reserved.
+// Copyright 2009-2011 Andreas Krennmair. 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"
+ "errors"
+ "fmt"
+ "github.com/google/gopacket"
+ "net"
+)
+
+// EthernetBroadcast is the broadcast MAC address used by Ethernet.
+var EthernetBroadcast = net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}
+
+// Ethernet is the layer for Ethernet frame headers.
+type Ethernet struct {
+ BaseLayer
+ SrcMAC, DstMAC net.HardwareAddr
+ EthernetType EthernetType
+ // Length is only set if a length field exists within this header. Ethernet
+ // headers follow two different standards, one that uses an EthernetType, the
+ // other which defines a length the follows with a LLC header (802.3). If the
+ // former is the case, we set EthernetType and Length stays 0. In the latter
+ // case, we set Length and EthernetType = EthernetTypeLLC.
+ Length uint16
+}
+
+// LayerType returns LayerTypeEthernet
+func (e *Ethernet) LayerType() gopacket.LayerType { return LayerTypeEthernet }
+
+func (e *Ethernet) LinkFlow() gopacket.Flow {
+ return gopacket.NewFlow(EndpointMAC, e.SrcMAC, e.DstMAC)
+}
+
+func (eth *Ethernet) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
+ if len(data) < 14 {
+ return errors.New("Ethernet packet too small")
+ }
+ eth.DstMAC = net.HardwareAddr(data[0:6])
+ eth.SrcMAC = net.HardwareAddr(data[6:12])
+ eth.EthernetType = EthernetType(binary.BigEndian.Uint16(data[12:14]))
+ eth.BaseLayer = BaseLayer{data[:14], data[14:]}
+ eth.Length = 0
+ if eth.EthernetType < 0x0600 {
+ eth.Length = uint16(eth.EthernetType)
+ eth.EthernetType = EthernetTypeLLC
+ if cmp := len(eth.Payload) - int(eth.Length); cmp < 0 {
+ df.SetTruncated()
+ } else if cmp > 0 {
+ // Strip off bytes at the end, since we have too many bytes
+ eth.Payload = eth.Payload[:len(eth.Payload)-cmp]
+ }
+ // fmt.Println(eth)
+ }
+ return nil
+}
+
+// SerializeTo writes the serialized form of this layer into the
+// SerializationBuffer, implementing gopacket.SerializableLayer.
+// See the docs for gopacket.SerializableLayer for more info.
+func (eth *Ethernet) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error {
+ if len(eth.DstMAC) != 6 {
+ return fmt.Errorf("invalid dst MAC: %v", eth.DstMAC)
+ }
+ if len(eth.SrcMAC) != 6 {
+ return fmt.Errorf("invalid src MAC: %v", eth.SrcMAC)
+ }
+ payload := b.Bytes()
+ bytes, err := b.PrependBytes(14)
+ if err != nil {
+ return err
+ }
+ copy(bytes, eth.DstMAC)
+ copy(bytes[6:], eth.SrcMAC)
+ if eth.Length != 0 || eth.EthernetType == EthernetTypeLLC {
+ if opts.FixLengths {
+ eth.Length = uint16(len(payload))
+ }
+ if eth.EthernetType != EthernetTypeLLC {
+ return fmt.Errorf("ethernet type %v not compatible with length value %v", eth.EthernetType, eth.Length)
+ } else if eth.Length > 0x0600 {
+ return fmt.Errorf("invalid ethernet length %v", eth.Length)
+ }
+ binary.BigEndian.PutUint16(bytes[12:], eth.Length)
+ } else {
+ binary.BigEndian.PutUint16(bytes[12:], uint16(eth.EthernetType))
+ }
+ length := len(b.Bytes())
+ if length < 60 {
+ // Pad out to 60 bytes.
+ padding, err := b.AppendBytes(60 - length)
+ if err != nil {
+ return err
+ }
+ copy(padding, lotsOfZeros[:])
+ }
+ return nil
+}
+
+func (eth *Ethernet) CanDecode() gopacket.LayerClass {
+ return LayerTypeEthernet
+}
+
+func (eth *Ethernet) NextLayerType() gopacket.LayerType {
+ return eth.EthernetType.LayerType()
+}
+
+func decodeEthernet(data []byte, p gopacket.PacketBuilder) error {
+ eth := &Ethernet{}
+ err := eth.DecodeFromBytes(data, p)
+ if err != nil {
+ return err
+ }
+ p.AddLayer(eth)
+ p.SetLinkLayer(eth)
+ return p.NextDecoder(eth.EthernetType)
+}