diff options
Diffstat (limited to 'src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/github.com/google/gopacket/layers/ethernet.go')
-rw-r--r-- | src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/github.com/google/gopacket/layers/ethernet.go | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/github.com/google/gopacket/layers/ethernet.go b/src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/github.com/google/gopacket/layers/ethernet.go deleted file mode 100644 index b73748f2f7d..00000000000 --- a/src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/github.com/google/gopacket/layers/ethernet.go +++ /dev/null @@ -1,123 +0,0 @@ -// 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) -} |