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// 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 (
"errors"
"fmt"
"github.com/google/gopacket"
)
// EnumMetadata keeps track of a set of metadata for each enumeration value
// for protocol enumerations.
type EnumMetadata struct {
// DecodeWith is the decoder to use to decode this protocol's data.
DecodeWith gopacket.Decoder
// Name is the name of the enumeration value.
Name string
// LayerType is the layer type implied by the given enum.
LayerType gopacket.LayerType
}
// errorFunc returns a decoder that spits out a specific error message.
func errorFunc(msg string) gopacket.Decoder {
var e = errors.New(msg)
return gopacket.DecodeFunc(func([]byte, gopacket.PacketBuilder) error {
return e
})
}
// EthernetType is an enumeration of ethernet type values, and acts as a decoder
// for any type it supports.
type EthernetType uint16
const (
// EthernetTypeLLC is not an actual ethernet type. It is instead a
// placeholder we use in Ethernet frames that use the 802.3 standard of
// srcmac|dstmac|length|LLC instead of srcmac|dstmac|ethertype.
EthernetTypeLLC EthernetType = 0
EthernetTypeIPv4 EthernetType = 0x0800
EthernetTypeARP EthernetType = 0x0806
EthernetTypeIPv6 EthernetType = 0x86DD
EthernetTypeCiscoDiscovery EthernetType = 0x2000
EthernetTypeNortelDiscovery EthernetType = 0x01a2
EthernetTypeTransparentEthernetBridging EthernetType = 0x6558
EthernetTypeDot1Q EthernetType = 0x8100
EthernetTypePPPoEDiscovery EthernetType = 0x8863
EthernetTypePPPoESession EthernetType = 0x8864
EthernetTypeMPLSUnicast EthernetType = 0x8847
EthernetTypeMPLSMulticast EthernetType = 0x8848
EthernetTypeEAPOL EthernetType = 0x888e
EthernetTypeQinQ EthernetType = 0x88a8
EthernetTypeLinkLayerDiscovery EthernetType = 0x88cc
EthernetTypeEthernetCTP EthernetType = 0x9000
)
// IPProtocol is an enumeration of IP protocol values, and acts as a decoder
// for any type it supports.
type IPProtocol uint8
const (
IPProtocolIPv6HopByHop IPProtocol = 0
IPProtocolICMPv4 IPProtocol = 1
IPProtocolIGMP IPProtocol = 2
IPProtocolIPv4 IPProtocol = 4
IPProtocolTCP IPProtocol = 6
IPProtocolUDP IPProtocol = 17
IPProtocolRUDP IPProtocol = 27
IPProtocolIPv6 IPProtocol = 41
IPProtocolIPv6Routing IPProtocol = 43
IPProtocolIPv6Fragment IPProtocol = 44
IPProtocolGRE IPProtocol = 47
IPProtocolESP IPProtocol = 50
IPProtocolAH IPProtocol = 51
IPProtocolICMPv6 IPProtocol = 58
IPProtocolNoNextHeader IPProtocol = 59
IPProtocolIPv6Destination IPProtocol = 60
IPProtocolOSPF IPProtocol = 89
IPProtocolIPIP IPProtocol = 94
IPProtocolEtherIP IPProtocol = 97
IPProtocolVRRP IPProtocol = 112
IPProtocolSCTP IPProtocol = 132
IPProtocolUDPLite IPProtocol = 136
IPProtocolMPLSInIP IPProtocol = 137
)
// LinkType is an enumeration of link types, and acts as a decoder for any
// link type it supports.
type LinkType uint8
const (
// According to pcap-linktype(7) and http://www.tcpdump.org/linktypes.html
LinkTypeNull LinkType = 0
LinkTypeEthernet LinkType = 1
LinkTypeAX25 LinkType = 3
LinkTypeTokenRing LinkType = 6
LinkTypeArcNet LinkType = 7
LinkTypeSLIP LinkType = 8
LinkTypePPP LinkType = 9
LinkTypeFDDI LinkType = 10
LinkTypePPP_HDLC LinkType = 50
LinkTypePPPEthernet LinkType = 51
LinkTypeATM_RFC1483 LinkType = 100
LinkTypeRaw LinkType = 101
LinkTypeC_HDLC LinkType = 104
LinkTypeIEEE802_11 LinkType = 105
LinkTypeFRelay LinkType = 107
LinkTypeLoop LinkType = 108
LinkTypeLinuxSLL LinkType = 113
LinkTypeLTalk LinkType = 114
LinkTypePFLog LinkType = 117
LinkTypePrismHeader LinkType = 119
LinkTypeIPOverFC LinkType = 122
LinkTypeSunATM LinkType = 123
LinkTypeIEEE80211Radio LinkType = 127
LinkTypeARCNetLinux LinkType = 129
LinkTypeIPOver1394 LinkType = 138
LinkTypeMTP2Phdr LinkType = 139
LinkTypeMTP2 LinkType = 140
LinkTypeMTP3 LinkType = 141
LinkTypeSCCP LinkType = 142
LinkTypeDOCSIS LinkType = 143
LinkTypeLinuxIRDA LinkType = 144
LinkTypeLinuxLAPD LinkType = 177
LinkTypeLinuxUSB LinkType = 220
LinkTypeIPv4 LinkType = 228
LinkTypeIPv6 LinkType = 229
)
// PPPoECode is the PPPoE code enum, taken from http://tools.ietf.org/html/rfc2516
type PPPoECode uint8
const (
PPPoECodePADI PPPoECode = 0x09
PPPoECodePADO PPPoECode = 0x07
PPPoECodePADR PPPoECode = 0x19
PPPoECodePADS PPPoECode = 0x65
PPPoECodePADT PPPoECode = 0xA7
PPPoECodeSession PPPoECode = 0x00
)
// PPPType is an enumeration of PPP type values, and acts as a decoder for any
// type it supports.
type PPPType uint16
const (
PPPTypeIPv4 PPPType = 0x0021
PPPTypeIPv6 PPPType = 0x0057
PPPTypeMPLSUnicast PPPType = 0x0281
PPPTypeMPLSMulticast PPPType = 0x0283
)
// SCTPChunkType is an enumeration of chunk types inside SCTP packets.
type SCTPChunkType uint8
const (
SCTPChunkTypeData SCTPChunkType = 0
SCTPChunkTypeInit SCTPChunkType = 1
SCTPChunkTypeInitAck SCTPChunkType = 2
SCTPChunkTypeSack SCTPChunkType = 3
SCTPChunkTypeHeartbeat SCTPChunkType = 4
SCTPChunkTypeHeartbeatAck SCTPChunkType = 5
SCTPChunkTypeAbort SCTPChunkType = 6
SCTPChunkTypeShutdown SCTPChunkType = 7
SCTPChunkTypeShutdownAck SCTPChunkType = 8
SCTPChunkTypeError SCTPChunkType = 9
SCTPChunkTypeCookieEcho SCTPChunkType = 10
SCTPChunkTypeCookieAck SCTPChunkType = 11
SCTPChunkTypeShutdownComplete SCTPChunkType = 14
)
// FDDIFrameControl is an enumeration of FDDI frame control bytes.
type FDDIFrameControl uint8
const (
FDDIFrameControlLLC FDDIFrameControl = 0x50
)
// EAPOLType is an enumeration of EAPOL packet types.
type EAPOLType uint8
const (
EAPOLTypeEAP EAPOLType = 0
EAPOLTypeStart EAPOLType = 1
EAPOLTypeLogOff EAPOLType = 2
EAPOLTypeKey EAPOLType = 3
EAPOLTypeASFAlert EAPOLType = 4
)
// ProtocolFamily is the set of values defined as PF_* in sys/socket.h
type ProtocolFamily uint8
const (
ProtocolFamilyIPv4 ProtocolFamily = 2
// BSDs use different values for INET6... glory be. These values taken from
// tcpdump 4.3.0.
ProtocolFamilyIPv6BSD ProtocolFamily = 24
ProtocolFamilyIPv6FreeBSD ProtocolFamily = 28
ProtocolFamilyIPv6Darwin ProtocolFamily = 30
ProtocolFamilyIPv6Linux ProtocolFamily = 10
)
// Dot11Type is a combination of IEEE 802.11 frame's Type and Subtype fields.
// By combining these two fields together into a single type, we're able to
// provide a String function that correctly displays the subtype given the
// top-level type.
//
// If you just care about the top-level type, use the MainType function.
type Dot11Type uint8
// MainType strips the subtype information from the given type,
// returning just the overarching type (Mgmt, Ctrl, Data, Reserved).
func (d Dot11Type) MainType() Dot11Type {
return d & dot11TypeMask
}
func (d Dot11Type) QOS() bool {
return d&dot11QOSMask == Dot11TypeDataQOSData
}
const (
Dot11TypeMgmt Dot11Type = 0x00
Dot11TypeCtrl Dot11Type = 0x01
Dot11TypeData Dot11Type = 0x02
Dot11TypeReserved Dot11Type = 0x03
dot11TypeMask = 0x03
dot11QOSMask = 0x23
// The following are type/subtype conglomerations.
// Management
Dot11TypeMgmtAssociationReq Dot11Type = 0x00
Dot11TypeMgmtAssociationResp Dot11Type = 0x04
Dot11TypeMgmtReassociationReq Dot11Type = 0x08
Dot11TypeMgmtReassociationResp Dot11Type = 0x0c
Dot11TypeMgmtProbeReq Dot11Type = 0x10
Dot11TypeMgmtProbeResp Dot11Type = 0x14
Dot11TypeMgmtMeasurementPilot Dot11Type = 0x18
Dot11TypeMgmtBeacon Dot11Type = 0x20
Dot11TypeMgmtATIM Dot11Type = 0x24
Dot11TypeMgmtDisassociation Dot11Type = 0x28
Dot11TypeMgmtAuthentication Dot11Type = 0x2c
Dot11TypeMgmtDeauthentication Dot11Type = 0x30
Dot11TypeMgmtAction Dot11Type = 0x34
Dot11TypeMgmtActionNoAck Dot11Type = 0x38
// Control
Dot11TypeCtrlWrapper Dot11Type = 0x1d
Dot11TypeCtrlBlockAckReq Dot11Type = 0x21
Dot11TypeCtrlBlockAck Dot11Type = 0x25
Dot11TypeCtrlPowersavePoll Dot11Type = 0x29
Dot11TypeCtrlRTS Dot11Type = 0x2d
Dot11TypeCtrlCTS Dot11Type = 0x31
Dot11TypeCtrlAck Dot11Type = 0x35
Dot11TypeCtrlCFEnd Dot11Type = 0x39
Dot11TypeCtrlCFEndAck Dot11Type = 0x3d
// Data
Dot11TypeDataCFAck Dot11Type = 0x06
Dot11TypeDataCFPoll Dot11Type = 0x0a
Dot11TypeDataCFAckPoll Dot11Type = 0x0e
Dot11TypeDataNull Dot11Type = 0x12
Dot11TypeDataCFAckNoData Dot11Type = 0x16
Dot11TypeDataCFPollNoData Dot11Type = 0x1a
Dot11TypeDataCFAckPollNoData Dot11Type = 0x1e
Dot11TypeDataQOSData Dot11Type = 0x22
Dot11TypeDataQOSDataCFAck Dot11Type = 0x26
Dot11TypeDataQOSDataCFPoll Dot11Type = 0x2a
Dot11TypeDataQOSDataCFAckPoll Dot11Type = 0x2e
Dot11TypeDataQOSNull Dot11Type = 0x32
Dot11TypeDataQOSCFPollNoData Dot11Type = 0x3a
Dot11TypeDataQOSCFAckPollNoData Dot11Type = 0x3e
)
// Decode a raw v4 or v6 IP packet.
func decodeIPv4or6(data []byte, p gopacket.PacketBuilder) error {
version := data[0] >> 4
switch version {
case 4:
return decodeIPv4(data, p)
case 6:
return decodeIPv6(data, p)
}
return fmt.Errorf("Invalid IP packet version %v", version)
}
func initActualTypeData() {
// Each of the XXXTypeMetadata arrays contains mappings of how to handle enum
// values for various enum types in gopacket/layers.
// These arrays are actually created by gen2.go and stored in
// enums_generated.go.
//
// So, EthernetTypeMetadata[2] contains information on how to handle EthernetType
// 2, including which name to give it and which decoder to use to decode
// packet data of that type. These arrays are filled by default with all of the
// protocols gopacket/layers knows how to handle, but users of the library can
// add new decoders or override existing ones. For example, if you write a better
// TCP decoder, you can override IPProtocolMetadata[IPProtocolTCP].DecodeWith
// with your new decoder, and all gopacket/layers decoding will use your new
// decoder whenever they encounter that IPProtocol.
// Here we link up all enumerations with their respective names and decoders.
EthernetTypeMetadata[EthernetTypeLLC] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeLLC), Name: "LLC", LayerType: LayerTypeLLC}
EthernetTypeMetadata[EthernetTypeIPv4] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv4), Name: "IPv4", LayerType: LayerTypeIPv4}
EthernetTypeMetadata[EthernetTypeIPv6] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6), Name: "IPv6", LayerType: LayerTypeIPv6}
EthernetTypeMetadata[EthernetTypeARP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeARP), Name: "ARP", LayerType: LayerTypeARP}
EthernetTypeMetadata[EthernetTypeDot1Q] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot1Q), Name: "Dot1Q", LayerType: LayerTypeDot1Q}
EthernetTypeMetadata[EthernetTypePPPoEDiscovery] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodePPPoE), Name: "PPPoEDiscovery", LayerType: LayerTypePPPoE}
EthernetTypeMetadata[EthernetTypePPPoESession] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodePPPoE), Name: "PPPoESession", LayerType: LayerTypePPPoE}
EthernetTypeMetadata[EthernetTypeEthernetCTP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeEthernetCTP), Name: "EthernetCTP", LayerType: LayerTypeEthernetCTP}
EthernetTypeMetadata[EthernetTypeCiscoDiscovery] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeCiscoDiscovery), Name: "CiscoDiscovery", LayerType: LayerTypeCiscoDiscovery}
EthernetTypeMetadata[EthernetTypeNortelDiscovery] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeNortelDiscovery), Name: "NortelDiscovery", LayerType: LayerTypeNortelDiscovery}
EthernetTypeMetadata[EthernetTypeLinkLayerDiscovery] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeLinkLayerDiscovery), Name: "LinkLayerDiscovery", LayerType: LayerTypeLinkLayerDiscovery}
EthernetTypeMetadata[EthernetTypeMPLSUnicast] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeMPLS), Name: "MPLSUnicast", LayerType: LayerTypeMPLS}
EthernetTypeMetadata[EthernetTypeMPLSMulticast] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeMPLS), Name: "MPLSMulticast", LayerType: LayerTypeMPLS}
EthernetTypeMetadata[EthernetTypeEAPOL] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeEAPOL), Name: "EAPOL", LayerType: LayerTypeEAPOL}
EthernetTypeMetadata[EthernetTypeQinQ] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot1Q), Name: "Dot1Q", LayerType: LayerTypeDot1Q}
EthernetTypeMetadata[EthernetTypeTransparentEthernetBridging] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeEthernet), Name: "TransparentEthernetBridging", LayerType: LayerTypeEthernet}
IPProtocolMetadata[IPProtocolIPv4] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv4), Name: "IPv4", LayerType: LayerTypeIPv4}
IPProtocolMetadata[IPProtocolTCP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeTCP), Name: "TCP", LayerType: LayerTypeTCP}
IPProtocolMetadata[IPProtocolUDP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeUDP), Name: "UDP", LayerType: LayerTypeUDP}
IPProtocolMetadata[IPProtocolICMPv4] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeICMPv4), Name: "ICMPv4", LayerType: LayerTypeICMPv4}
IPProtocolMetadata[IPProtocolICMPv6] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeICMPv6), Name: "ICMPv6", LayerType: LayerTypeICMPv6}
IPProtocolMetadata[IPProtocolSCTP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTP), Name: "SCTP", LayerType: LayerTypeSCTP}
IPProtocolMetadata[IPProtocolIPv6] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6), Name: "IPv6", LayerType: LayerTypeIPv6}
IPProtocolMetadata[IPProtocolIPIP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv4), Name: "IPv4", LayerType: LayerTypeIPv4}
IPProtocolMetadata[IPProtocolEtherIP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeEtherIP), Name: "EtherIP", LayerType: LayerTypeEtherIP}
IPProtocolMetadata[IPProtocolRUDP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeRUDP), Name: "RUDP", LayerType: LayerTypeRUDP}
IPProtocolMetadata[IPProtocolGRE] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeGRE), Name: "GRE", LayerType: LayerTypeGRE}
IPProtocolMetadata[IPProtocolIPv6HopByHop] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6HopByHop), Name: "IPv6HopByHop", LayerType: LayerTypeIPv6HopByHop}
IPProtocolMetadata[IPProtocolIPv6Routing] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6Routing), Name: "IPv6Routing", LayerType: LayerTypeIPv6Routing}
IPProtocolMetadata[IPProtocolIPv6Fragment] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6Fragment), Name: "IPv6Fragment", LayerType: LayerTypeIPv6Fragment}
IPProtocolMetadata[IPProtocolIPv6Destination] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6Destination), Name: "IPv6Destination", LayerType: LayerTypeIPv6Destination}
IPProtocolMetadata[IPProtocolOSPF] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeOSPF), Name: "OSPF", LayerType: LayerTypeOSPF}
IPProtocolMetadata[IPProtocolAH] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPSecAH), Name: "IPSecAH", LayerType: LayerTypeIPSecAH}
IPProtocolMetadata[IPProtocolESP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPSecESP), Name: "IPSecESP", LayerType: LayerTypeIPSecESP}
IPProtocolMetadata[IPProtocolUDPLite] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeUDPLite), Name: "UDPLite", LayerType: LayerTypeUDPLite}
IPProtocolMetadata[IPProtocolMPLSInIP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeMPLS), Name: "MPLS", LayerType: LayerTypeMPLS}
IPProtocolMetadata[IPProtocolNoNextHeader] = EnumMetadata{DecodeWith: gopacket.DecodePayload, Name: "NoNextHeader", LayerType: gopacket.LayerTypePayload}
IPProtocolMetadata[IPProtocolIGMP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIGMP), Name: "IGMP", LayerType: LayerTypeIGMP}
IPProtocolMetadata[IPProtocolVRRP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeVRRP), Name: "VRRP", LayerType: LayerTypeVRRP}
SCTPChunkTypeMetadata[SCTPChunkTypeData] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPData), Name: "Data"}
SCTPChunkTypeMetadata[SCTPChunkTypeInit] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPInit), Name: "Init"}
SCTPChunkTypeMetadata[SCTPChunkTypeInitAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPInit), Name: "InitAck"}
SCTPChunkTypeMetadata[SCTPChunkTypeSack] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPSack), Name: "Sack"}
SCTPChunkTypeMetadata[SCTPChunkTypeHeartbeat] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPHeartbeat), Name: "Heartbeat"}
SCTPChunkTypeMetadata[SCTPChunkTypeHeartbeatAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPHeartbeat), Name: "HeartbeatAck"}
SCTPChunkTypeMetadata[SCTPChunkTypeAbort] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPError), Name: "Abort"}
SCTPChunkTypeMetadata[SCTPChunkTypeError] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPError), Name: "Error"}
SCTPChunkTypeMetadata[SCTPChunkTypeShutdown] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPShutdown), Name: "Shutdown"}
SCTPChunkTypeMetadata[SCTPChunkTypeShutdownAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPShutdownAck), Name: "ShutdownAck"}
SCTPChunkTypeMetadata[SCTPChunkTypeCookieEcho] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPCookieEcho), Name: "CookieEcho"}
SCTPChunkTypeMetadata[SCTPChunkTypeCookieAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPEmptyLayer), Name: "CookieAck"}
SCTPChunkTypeMetadata[SCTPChunkTypeShutdownComplete] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeSCTPEmptyLayer), Name: "ShutdownComplete"}
PPPTypeMetadata[PPPTypeIPv4] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv4), Name: "IPv4"}
PPPTypeMetadata[PPPTypeIPv6] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6), Name: "IPv6"}
PPPTypeMetadata[PPPTypeMPLSUnicast] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeMPLS), Name: "MPLSUnicast"}
PPPTypeMetadata[PPPTypeMPLSMulticast] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeMPLS), Name: "MPLSMulticast"}
PPPoECodeMetadata[PPPoECodeSession] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodePPP), Name: "PPP"}
LinkTypeMetadata[LinkTypeEthernet] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeEthernet), Name: "Ethernet"}
LinkTypeMetadata[LinkTypePPP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodePPP), Name: "PPP"}
LinkTypeMetadata[LinkTypeFDDI] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeFDDI), Name: "FDDI"}
LinkTypeMetadata[LinkTypeNull] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeLoopback), Name: "Null"}
LinkTypeMetadata[LinkTypeIEEE802_11] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11), Name: "Dot11"}
LinkTypeMetadata[LinkTypeLoop] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeLoopback), Name: "Loop"}
LinkTypeMetadata[LinkTypeIEEE802_11] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11), Name: "802.11"}
LinkTypeMetadata[LinkTypeRaw] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv4or6), Name: "Raw"}
LinkTypeMetadata[LinkTypePFLog] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodePFLog), Name: "PFLog"}
LinkTypeMetadata[LinkTypeIEEE80211Radio] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeRadioTap), Name: "RadioTap"}
LinkTypeMetadata[LinkTypeLinuxUSB] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeUSB), Name: "USB"}
LinkTypeMetadata[LinkTypeLinuxSLL] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeLinuxSLL), Name: "Linux SLL"}
LinkTypeMetadata[LinkTypePrismHeader] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodePrismHeader), Name: "Prism"}
FDDIFrameControlMetadata[FDDIFrameControlLLC] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeLLC), Name: "LLC"}
EAPOLTypeMetadata[EAPOLTypeEAP] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeEAP), Name: "EAP", LayerType: LayerTypeEAP}
EAPOLTypeMetadata[EAPOLTypeKey] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeEAPOLKey), Name: "EAPOLKey", LayerType: LayerTypeEAPOLKey}
ProtocolFamilyMetadata[ProtocolFamilyIPv4] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv4), Name: "IPv4", LayerType: LayerTypeIPv4}
ProtocolFamilyMetadata[ProtocolFamilyIPv6BSD] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6), Name: "IPv6", LayerType: LayerTypeIPv6}
ProtocolFamilyMetadata[ProtocolFamilyIPv6FreeBSD] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6), Name: "IPv6", LayerType: LayerTypeIPv6}
ProtocolFamilyMetadata[ProtocolFamilyIPv6Darwin] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6), Name: "IPv6", LayerType: LayerTypeIPv6}
ProtocolFamilyMetadata[ProtocolFamilyIPv6Linux] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeIPv6), Name: "IPv6", LayerType: LayerTypeIPv6}
Dot11TypeMetadata[Dot11TypeMgmtAssociationReq] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtAssociationReq), Name: "MgmtAssociationReq", LayerType: LayerTypeDot11MgmtAssociationReq}
Dot11TypeMetadata[Dot11TypeMgmtAssociationResp] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtAssociationResp), Name: "MgmtAssociationResp", LayerType: LayerTypeDot11MgmtAssociationResp}
Dot11TypeMetadata[Dot11TypeMgmtReassociationReq] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtReassociationReq), Name: "MgmtReassociationReq", LayerType: LayerTypeDot11MgmtReassociationReq}
Dot11TypeMetadata[Dot11TypeMgmtReassociationResp] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtReassociationResp), Name: "MgmtReassociationResp", LayerType: LayerTypeDot11MgmtReassociationResp}
Dot11TypeMetadata[Dot11TypeMgmtProbeReq] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtProbeReq), Name: "MgmtProbeReq", LayerType: LayerTypeDot11MgmtProbeReq}
Dot11TypeMetadata[Dot11TypeMgmtProbeResp] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtProbeResp), Name: "MgmtProbeResp", LayerType: LayerTypeDot11MgmtProbeResp}
Dot11TypeMetadata[Dot11TypeMgmtMeasurementPilot] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtMeasurementPilot), Name: "MgmtMeasurementPilot", LayerType: LayerTypeDot11MgmtMeasurementPilot}
Dot11TypeMetadata[Dot11TypeMgmtBeacon] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtBeacon), Name: "MgmtBeacon", LayerType: LayerTypeDot11MgmtBeacon}
Dot11TypeMetadata[Dot11TypeMgmtATIM] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtATIM), Name: "MgmtATIM", LayerType: LayerTypeDot11MgmtATIM}
Dot11TypeMetadata[Dot11TypeMgmtDisassociation] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtDisassociation), Name: "MgmtDisassociation", LayerType: LayerTypeDot11MgmtDisassociation}
Dot11TypeMetadata[Dot11TypeMgmtAuthentication] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtAuthentication), Name: "MgmtAuthentication", LayerType: LayerTypeDot11MgmtAuthentication}
Dot11TypeMetadata[Dot11TypeMgmtDeauthentication] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtDeauthentication), Name: "MgmtDeauthentication", LayerType: LayerTypeDot11MgmtDeauthentication}
Dot11TypeMetadata[Dot11TypeMgmtAction] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtAction), Name: "MgmtAction", LayerType: LayerTypeDot11MgmtAction}
Dot11TypeMetadata[Dot11TypeMgmtActionNoAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11MgmtActionNoAck), Name: "MgmtActionNoAck", LayerType: LayerTypeDot11MgmtActionNoAck}
Dot11TypeMetadata[Dot11TypeCtrl] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11Ctrl), Name: "Ctrl", LayerType: LayerTypeDot11Ctrl}
Dot11TypeMetadata[Dot11TypeCtrlWrapper] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11Ctrl), Name: "CtrlWrapper", LayerType: LayerTypeDot11Ctrl}
Dot11TypeMetadata[Dot11TypeCtrlBlockAckReq] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11CtrlBlockAckReq), Name: "CtrlBlockAckReq", LayerType: LayerTypeDot11CtrlBlockAckReq}
Dot11TypeMetadata[Dot11TypeCtrlBlockAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11CtrlBlockAck), Name: "CtrlBlockAck", LayerType: LayerTypeDot11CtrlBlockAck}
Dot11TypeMetadata[Dot11TypeCtrlPowersavePoll] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11CtrlPowersavePoll), Name: "CtrlPowersavePoll", LayerType: LayerTypeDot11CtrlPowersavePoll}
Dot11TypeMetadata[Dot11TypeCtrlRTS] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11CtrlRTS), Name: "CtrlRTS", LayerType: LayerTypeDot11CtrlRTS}
Dot11TypeMetadata[Dot11TypeCtrlCTS] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11CtrlCTS), Name: "CtrlCTS", LayerType: LayerTypeDot11CtrlCTS}
Dot11TypeMetadata[Dot11TypeCtrlAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11CtrlAck), Name: "CtrlAck", LayerType: LayerTypeDot11CtrlAck}
Dot11TypeMetadata[Dot11TypeCtrlCFEnd] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11CtrlCFEnd), Name: "CtrlCFEnd", LayerType: LayerTypeDot11CtrlCFEnd}
Dot11TypeMetadata[Dot11TypeCtrlCFEndAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11CtrlCFEndAck), Name: "CtrlCFEndAck", LayerType: LayerTypeDot11CtrlCFEndAck}
Dot11TypeMetadata[Dot11TypeData] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11Data), Name: "Data", LayerType: LayerTypeDot11Data}
Dot11TypeMetadata[Dot11TypeDataCFAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataCFAck), Name: "DataCFAck", LayerType: LayerTypeDot11DataCFAck}
Dot11TypeMetadata[Dot11TypeDataCFPoll] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataCFPoll), Name: "DataCFPoll", LayerType: LayerTypeDot11DataCFPoll}
Dot11TypeMetadata[Dot11TypeDataCFAckPoll] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataCFAckPoll), Name: "DataCFAckPoll", LayerType: LayerTypeDot11DataCFAckPoll}
Dot11TypeMetadata[Dot11TypeDataNull] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataNull), Name: "DataNull", LayerType: LayerTypeDot11DataNull}
Dot11TypeMetadata[Dot11TypeDataCFAckNoData] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataCFAckNoData), Name: "DataCFAckNoData", LayerType: LayerTypeDot11DataCFAckNoData}
Dot11TypeMetadata[Dot11TypeDataCFPollNoData] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataCFPollNoData), Name: "DataCFPollNoData", LayerType: LayerTypeDot11DataCFPollNoData}
Dot11TypeMetadata[Dot11TypeDataCFAckPollNoData] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataCFAckPollNoData), Name: "DataCFAckPollNoData", LayerType: LayerTypeDot11DataCFAckPollNoData}
Dot11TypeMetadata[Dot11TypeDataQOSData] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataQOSData), Name: "DataQOSData", LayerType: LayerTypeDot11DataQOSData}
Dot11TypeMetadata[Dot11TypeDataQOSDataCFAck] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataQOSDataCFAck), Name: "DataQOSDataCFAck", LayerType: LayerTypeDot11DataQOSDataCFAck}
Dot11TypeMetadata[Dot11TypeDataQOSDataCFPoll] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataQOSDataCFPoll), Name: "DataQOSDataCFPoll", LayerType: LayerTypeDot11DataQOSDataCFPoll}
Dot11TypeMetadata[Dot11TypeDataQOSDataCFAckPoll] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataQOSDataCFAckPoll), Name: "DataQOSDataCFAckPoll", LayerType: LayerTypeDot11DataQOSDataCFAckPoll}
Dot11TypeMetadata[Dot11TypeDataQOSNull] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataQOSNull), Name: "DataQOSNull", LayerType: LayerTypeDot11DataQOSNull}
Dot11TypeMetadata[Dot11TypeDataQOSCFPollNoData] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataQOSCFPollNoData), Name: "DataQOSCFPollNoData", LayerType: LayerTypeDot11DataQOSCFPollNoData}
Dot11TypeMetadata[Dot11TypeDataQOSCFAckPollNoData] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeDot11DataQOSCFAckPollNoData), Name: "DataQOSCFAckPollNoData", LayerType: LayerTypeDot11DataQOSCFAckPollNoData}
USBTransportTypeMetadata[USBTransportTypeInterrupt] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeUSBInterrupt), Name: "Interrupt", LayerType: LayerTypeUSBInterrupt}
USBTransportTypeMetadata[USBTransportTypeControl] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeUSBControl), Name: "Control", LayerType: LayerTypeUSBControl}
USBTransportTypeMetadata[USBTransportTypeBulk] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(decodeUSBBulk), Name: "Bulk", LayerType: LayerTypeUSBBulk}
}