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authorOndrej Fabry <ofabry@cisco.com>2019-08-02 15:07:53 +0200
committerOndrej Fabry <ofabry@cisco.com>2019-08-02 15:07:53 +0200
commitca6003af1a7e1adb7d45879c2d5038bc05c2bb1a (patch)
tree97a3620b0fc5c7a0ee032fe7d12d37b6303cfb01 /vendor/github.com/google/gopacket/layers/radiotap.go
parent639870b5083a1e66f4584ec7a5f30492fcdb7168 (diff)
Migrate to modules, refactor Makefile and use Travis for CI
- migrate to Go modules and remove vendor - refactor Makefile - add version package and store version - split extras from the rest - use travis for CI Change-Id: I81b35220653b0f7c9a0fcdd4c527d691ec1e96c1 Signed-off-by: Ondrej Fabry <ofabry@cisco.com>
Diffstat (limited to 'vendor/github.com/google/gopacket/layers/radiotap.go')
-rw-r--r--vendor/github.com/google/gopacket/layers/radiotap.go1045
1 files changed, 0 insertions, 1045 deletions
diff --git a/vendor/github.com/google/gopacket/layers/radiotap.go b/vendor/github.com/google/gopacket/layers/radiotap.go
deleted file mode 100644
index 4304e75..0000000
--- a/vendor/github.com/google/gopacket/layers/radiotap.go
+++ /dev/null
@@ -1,1045 +0,0 @@
-// Copyright 2014 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 (
- "bytes"
- "encoding/binary"
- "fmt"
- "hash/crc32"
- "strings"
-
- "github.com/google/gopacket"
-)
-
-// align calculates the number of bytes needed to align with the width
-// on the offset, returning the number of bytes we need to skip to
-// align to the offset (width).
-func align(offset uint16, width uint16) uint16 {
- return ((((offset) + ((width) - 1)) & (^((width) - 1))) - offset)
-}
-
-type RadioTapPresent uint32
-
-const (
- RadioTapPresentTSFT RadioTapPresent = 1 << iota
- RadioTapPresentFlags
- RadioTapPresentRate
- RadioTapPresentChannel
- RadioTapPresentFHSS
- RadioTapPresentDBMAntennaSignal
- RadioTapPresentDBMAntennaNoise
- RadioTapPresentLockQuality
- RadioTapPresentTxAttenuation
- RadioTapPresentDBTxAttenuation
- RadioTapPresentDBMTxPower
- RadioTapPresentAntenna
- RadioTapPresentDBAntennaSignal
- RadioTapPresentDBAntennaNoise
- RadioTapPresentRxFlags
- RadioTapPresentTxFlags
- RadioTapPresentRtsRetries
- RadioTapPresentDataRetries
- _
- RadioTapPresentMCS
- RadioTapPresentAMPDUStatus
- RadioTapPresentVHT
- RadioTapPresentEXT RadioTapPresent = 1 << 31
-)
-
-func (r RadioTapPresent) TSFT() bool {
- return r&RadioTapPresentTSFT != 0
-}
-func (r RadioTapPresent) Flags() bool {
- return r&RadioTapPresentFlags != 0
-}
-func (r RadioTapPresent) Rate() bool {
- return r&RadioTapPresentRate != 0
-}
-func (r RadioTapPresent) Channel() bool {
- return r&RadioTapPresentChannel != 0
-}
-func (r RadioTapPresent) FHSS() bool {
- return r&RadioTapPresentFHSS != 0
-}
-func (r RadioTapPresent) DBMAntennaSignal() bool {
- return r&RadioTapPresentDBMAntennaSignal != 0
-}
-func (r RadioTapPresent) DBMAntennaNoise() bool {
- return r&RadioTapPresentDBMAntennaNoise != 0
-}
-func (r RadioTapPresent) LockQuality() bool {
- return r&RadioTapPresentLockQuality != 0
-}
-func (r RadioTapPresent) TxAttenuation() bool {
- return r&RadioTapPresentTxAttenuation != 0
-}
-func (r RadioTapPresent) DBTxAttenuation() bool {
- return r&RadioTapPresentDBTxAttenuation != 0
-}
-func (r RadioTapPresent) DBMTxPower() bool {
- return r&RadioTapPresentDBMTxPower != 0
-}
-func (r RadioTapPresent) Antenna() bool {
- return r&RadioTapPresentAntenna != 0
-}
-func (r RadioTapPresent) DBAntennaSignal() bool {
- return r&RadioTapPresentDBAntennaSignal != 0
-}
-func (r RadioTapPresent) DBAntennaNoise() bool {
- return r&RadioTapPresentDBAntennaNoise != 0
-}
-func (r RadioTapPresent) RxFlags() bool {
- return r&RadioTapPresentRxFlags != 0
-}
-func (r RadioTapPresent) TxFlags() bool {
- return r&RadioTapPresentTxFlags != 0
-}
-func (r RadioTapPresent) RtsRetries() bool {
- return r&RadioTapPresentRtsRetries != 0
-}
-func (r RadioTapPresent) DataRetries() bool {
- return r&RadioTapPresentDataRetries != 0
-}
-func (r RadioTapPresent) MCS() bool {
- return r&RadioTapPresentMCS != 0
-}
-func (r RadioTapPresent) AMPDUStatus() bool {
- return r&RadioTapPresentAMPDUStatus != 0
-}
-func (r RadioTapPresent) VHT() bool {
- return r&RadioTapPresentVHT != 0
-}
-func (r RadioTapPresent) EXT() bool {
- return r&RadioTapPresentEXT != 0
-}
-
-type RadioTapChannelFlags uint16
-
-const (
- RadioTapChannelFlagsTurbo RadioTapChannelFlags = 0x0010 // Turbo channel
- RadioTapChannelFlagsCCK RadioTapChannelFlags = 0x0020 // CCK channel
- RadioTapChannelFlagsOFDM RadioTapChannelFlags = 0x0040 // OFDM channel
- RadioTapChannelFlagsGhz2 RadioTapChannelFlags = 0x0080 // 2 GHz spectrum channel.
- RadioTapChannelFlagsGhz5 RadioTapChannelFlags = 0x0100 // 5 GHz spectrum channel
- RadioTapChannelFlagsPassive RadioTapChannelFlags = 0x0200 // Only passive scan allowed
- RadioTapChannelFlagsDynamic RadioTapChannelFlags = 0x0400 // Dynamic CCK-OFDM channel
- RadioTapChannelFlagsGFSK RadioTapChannelFlags = 0x0800 // GFSK channel (FHSS PHY)
-)
-
-func (r RadioTapChannelFlags) Turbo() bool {
- return r&RadioTapChannelFlagsTurbo != 0
-}
-func (r RadioTapChannelFlags) CCK() bool {
- return r&RadioTapChannelFlagsCCK != 0
-}
-func (r RadioTapChannelFlags) OFDM() bool {
- return r&RadioTapChannelFlagsOFDM != 0
-}
-func (r RadioTapChannelFlags) Ghz2() bool {
- return r&RadioTapChannelFlagsGhz2 != 0
-}
-func (r RadioTapChannelFlags) Ghz5() bool {
- return r&RadioTapChannelFlagsGhz5 != 0
-}
-func (r RadioTapChannelFlags) Passive() bool {
- return r&RadioTapChannelFlagsPassive != 0
-}
-func (r RadioTapChannelFlags) Dynamic() bool {
- return r&RadioTapChannelFlagsDynamic != 0
-}
-func (r RadioTapChannelFlags) GFSK() bool {
- return r&RadioTapChannelFlagsGFSK != 0
-}
-
-// String provides a human readable string for RadioTapChannelFlags.
-// This string is possibly subject to change over time; if you're storing this
-// persistently, you should probably store the RadioTapChannelFlags value, not its string.
-func (a RadioTapChannelFlags) String() string {
- var out bytes.Buffer
- if a.Turbo() {
- out.WriteString("Turbo,")
- }
- if a.CCK() {
- out.WriteString("CCK,")
- }
- if a.OFDM() {
- out.WriteString("OFDM,")
- }
- if a.Ghz2() {
- out.WriteString("Ghz2,")
- }
- if a.Ghz5() {
- out.WriteString("Ghz5,")
- }
- if a.Passive() {
- out.WriteString("Passive,")
- }
- if a.Dynamic() {
- out.WriteString("Dynamic,")
- }
- if a.GFSK() {
- out.WriteString("GFSK,")
- }
-
- if length := out.Len(); length > 0 {
- return string(out.Bytes()[:length-1]) // strip final comma
- }
- return ""
-}
-
-type RadioTapFlags uint8
-
-const (
- RadioTapFlagsCFP RadioTapFlags = 1 << iota // sent/received during CFP
- RadioTapFlagsShortPreamble // sent/received * with short * preamble
- RadioTapFlagsWEP // sent/received * with WEP encryption
- RadioTapFlagsFrag // sent/received * with fragmentation
- RadioTapFlagsFCS // frame includes FCS
- RadioTapFlagsDatapad // frame has padding between * 802.11 header and payload * (to 32-bit boundary)
- RadioTapFlagsBadFCS // does not pass FCS check
- RadioTapFlagsShortGI // HT short GI
-)
-
-func (r RadioTapFlags) CFP() bool {
- return r&RadioTapFlagsCFP != 0
-}
-func (r RadioTapFlags) ShortPreamble() bool {
- return r&RadioTapFlagsShortPreamble != 0
-}
-func (r RadioTapFlags) WEP() bool {
- return r&RadioTapFlagsWEP != 0
-}
-func (r RadioTapFlags) Frag() bool {
- return r&RadioTapFlagsFrag != 0
-}
-func (r RadioTapFlags) FCS() bool {
- return r&RadioTapFlagsFCS != 0
-}
-func (r RadioTapFlags) Datapad() bool {
- return r&RadioTapFlagsDatapad != 0
-}
-func (r RadioTapFlags) BadFCS() bool {
- return r&RadioTapFlagsBadFCS != 0
-}
-func (r RadioTapFlags) ShortGI() bool {
- return r&RadioTapFlagsShortGI != 0
-}
-
-// String provides a human readable string for RadioTapFlags.
-// This string is possibly subject to change over time; if you're storing this
-// persistently, you should probably store the RadioTapFlags value, not its string.
-func (a RadioTapFlags) String() string {
- var out bytes.Buffer
- if a.CFP() {
- out.WriteString("CFP,")
- }
- if a.ShortPreamble() {
- out.WriteString("SHORT-PREAMBLE,")
- }
- if a.WEP() {
- out.WriteString("WEP,")
- }
- if a.Frag() {
- out.WriteString("FRAG,")
- }
- if a.FCS() {
- out.WriteString("FCS,")
- }
- if a.Datapad() {
- out.WriteString("DATAPAD,")
- }
- if a.ShortGI() {
- out.WriteString("SHORT-GI,")
- }
-
- if length := out.Len(); length > 0 {
- return string(out.Bytes()[:length-1]) // strip final comma
- }
- return ""
-}
-
-type RadioTapRate uint8
-
-func (a RadioTapRate) String() string {
- return fmt.Sprintf("%v Mb/s", 0.5*float32(a))
-}
-
-type RadioTapChannelFrequency uint16
-
-func (a RadioTapChannelFrequency) String() string {
- return fmt.Sprintf("%d MHz", a)
-}
-
-type RadioTapRxFlags uint16
-
-const (
- RadioTapRxFlagsBadPlcp RadioTapRxFlags = 0x0002
-)
-
-func (self RadioTapRxFlags) BadPlcp() bool {
- return self&RadioTapRxFlagsBadPlcp != 0
-}
-
-func (self RadioTapRxFlags) String() string {
- if self.BadPlcp() {
- return "BADPLCP"
- }
- return ""
-}
-
-type RadioTapTxFlags uint16
-
-const (
- RadioTapTxFlagsFail RadioTapTxFlags = 1 << iota
- RadioTapTxFlagsCTS
- RadioTapTxFlagsRTS
- RadioTapTxFlagsNoACK
-)
-
-func (self RadioTapTxFlags) Fail() bool { return self&RadioTapTxFlagsFail != 0 }
-func (self RadioTapTxFlags) CTS() bool { return self&RadioTapTxFlagsCTS != 0 }
-func (self RadioTapTxFlags) RTS() bool { return self&RadioTapTxFlagsRTS != 0 }
-func (self RadioTapTxFlags) NoACK() bool { return self&RadioTapTxFlagsNoACK != 0 }
-
-func (self RadioTapTxFlags) String() string {
- var tokens []string
- if self.Fail() {
- tokens = append(tokens, "Fail")
- }
- if self.CTS() {
- tokens = append(tokens, "CTS")
- }
- if self.RTS() {
- tokens = append(tokens, "RTS")
- }
- if self.NoACK() {
- tokens = append(tokens, "NoACK")
- }
- return strings.Join(tokens, ",")
-}
-
-type RadioTapMCS struct {
- Known RadioTapMCSKnown
- Flags RadioTapMCSFlags
- MCS uint8
-}
-
-func (self RadioTapMCS) String() string {
- var tokens []string
- if self.Known.Bandwidth() {
- token := "?"
- switch self.Flags.Bandwidth() {
- case 0:
- token = "20"
- case 1:
- token = "40"
- case 2:
- token = "40(20L)"
- case 3:
- token = "40(20U)"
- }
- tokens = append(tokens, token)
- }
- if self.Known.MCSIndex() {
- tokens = append(tokens, fmt.Sprintf("MCSIndex#%d", self.MCS))
- }
- if self.Known.GuardInterval() {
- if self.Flags.ShortGI() {
- tokens = append(tokens, fmt.Sprintf("shortGI"))
- } else {
- tokens = append(tokens, fmt.Sprintf("longGI"))
- }
- }
- if self.Known.HTFormat() {
- if self.Flags.Greenfield() {
- tokens = append(tokens, fmt.Sprintf("HT-greenfield"))
- } else {
- tokens = append(tokens, fmt.Sprintf("HT-mixed"))
- }
- }
- if self.Known.FECType() {
- if self.Flags.FECLDPC() {
- tokens = append(tokens, fmt.Sprintf("LDPC"))
- } else {
- tokens = append(tokens, fmt.Sprintf("BCC"))
- }
- }
- if self.Known.STBC() {
- tokens = append(tokens, fmt.Sprintf("STBC#%d", self.Flags.STBC()))
- }
- if self.Known.NESS() {
- num := 0
- if self.Known.NESS1() {
- num |= 0x02
- }
- if self.Flags.NESS0() {
- num |= 0x01
- }
- tokens = append(tokens, fmt.Sprintf("num-of-ESS#%d", num))
- }
- return strings.Join(tokens, ",")
-}
-
-type RadioTapMCSKnown uint8
-
-const (
- RadioTapMCSKnownBandwidth RadioTapMCSKnown = 1 << iota
- RadioTapMCSKnownMCSIndex
- RadioTapMCSKnownGuardInterval
- RadioTapMCSKnownHTFormat
- RadioTapMCSKnownFECType
- RadioTapMCSKnownSTBC
- RadioTapMCSKnownNESS
- RadioTapMCSKnownNESS1
-)
-
-func (self RadioTapMCSKnown) Bandwidth() bool { return self&RadioTapMCSKnownBandwidth != 0 }
-func (self RadioTapMCSKnown) MCSIndex() bool { return self&RadioTapMCSKnownMCSIndex != 0 }
-func (self RadioTapMCSKnown) GuardInterval() bool { return self&RadioTapMCSKnownGuardInterval != 0 }
-func (self RadioTapMCSKnown) HTFormat() bool { return self&RadioTapMCSKnownHTFormat != 0 }
-func (self RadioTapMCSKnown) FECType() bool { return self&RadioTapMCSKnownFECType != 0 }
-func (self RadioTapMCSKnown) STBC() bool { return self&RadioTapMCSKnownSTBC != 0 }
-func (self RadioTapMCSKnown) NESS() bool { return self&RadioTapMCSKnownNESS != 0 }
-func (self RadioTapMCSKnown) NESS1() bool { return self&RadioTapMCSKnownNESS1 != 0 }
-
-type RadioTapMCSFlags uint8
-
-const (
- RadioTapMCSFlagsBandwidthMask RadioTapMCSFlags = 0x03
- RadioTapMCSFlagsShortGI = 0x04
- RadioTapMCSFlagsGreenfield = 0x08
- RadioTapMCSFlagsFECLDPC = 0x10
- RadioTapMCSFlagsSTBCMask = 0x60
- RadioTapMCSFlagsNESS0 = 0x80
-)
-
-func (self RadioTapMCSFlags) Bandwidth() int {
- return int(self & RadioTapMCSFlagsBandwidthMask)
-}
-func (self RadioTapMCSFlags) ShortGI() bool { return self&RadioTapMCSFlagsShortGI != 0 }
-func (self RadioTapMCSFlags) Greenfield() bool { return self&RadioTapMCSFlagsGreenfield != 0 }
-func (self RadioTapMCSFlags) FECLDPC() bool { return self&RadioTapMCSFlagsFECLDPC != 0 }
-func (self RadioTapMCSFlags) STBC() int {
- return int(self&RadioTapMCSFlagsSTBCMask) >> 5
-}
-func (self RadioTapMCSFlags) NESS0() bool { return self&RadioTapMCSFlagsNESS0 != 0 }
-
-type RadioTapAMPDUStatus struct {
- Reference uint32
- Flags RadioTapAMPDUStatusFlags
- CRC uint8
-}
-
-func (self RadioTapAMPDUStatus) String() string {
- tokens := []string{
- fmt.Sprintf("ref#%x", self.Reference),
- }
- if self.Flags.ReportZerolen() && self.Flags.IsZerolen() {
- tokens = append(tokens, fmt.Sprintf("zero-length"))
- }
- if self.Flags.LastKnown() && self.Flags.IsLast() {
- tokens = append(tokens, "last")
- }
- if self.Flags.DelimCRCErr() {
- tokens = append(tokens, "delimiter CRC error")
- }
- if self.Flags.DelimCRCKnown() {
- tokens = append(tokens, fmt.Sprintf("delimiter-CRC=%02x", self.CRC))
- }
- return strings.Join(tokens, ",")
-}
-
-type RadioTapAMPDUStatusFlags uint16
-
-const (
- RadioTapAMPDUStatusFlagsReportZerolen RadioTapAMPDUStatusFlags = 1 << iota
- RadioTapAMPDUIsZerolen
- RadioTapAMPDULastKnown
- RadioTapAMPDUIsLast
- RadioTapAMPDUDelimCRCErr
- RadioTapAMPDUDelimCRCKnown
-)
-
-func (self RadioTapAMPDUStatusFlags) ReportZerolen() bool {
- return self&RadioTapAMPDUStatusFlagsReportZerolen != 0
-}
-func (self RadioTapAMPDUStatusFlags) IsZerolen() bool { return self&RadioTapAMPDUIsZerolen != 0 }
-func (self RadioTapAMPDUStatusFlags) LastKnown() bool { return self&RadioTapAMPDULastKnown != 0 }
-func (self RadioTapAMPDUStatusFlags) IsLast() bool { return self&RadioTapAMPDUIsLast != 0 }
-func (self RadioTapAMPDUStatusFlags) DelimCRCErr() bool { return self&RadioTapAMPDUDelimCRCErr != 0 }
-func (self RadioTapAMPDUStatusFlags) DelimCRCKnown() bool { return self&RadioTapAMPDUDelimCRCKnown != 0 }
-
-type RadioTapVHT struct {
- Known RadioTapVHTKnown
- Flags RadioTapVHTFlags
- Bandwidth uint8
- MCSNSS [4]RadioTapVHTMCSNSS
- Coding uint8
- GroupId uint8
- PartialAID uint16
-}
-
-func (self RadioTapVHT) String() string {
- var tokens []string
- if self.Known.STBC() {
- if self.Flags.STBC() {
- tokens = append(tokens, "STBC")
- } else {
- tokens = append(tokens, "no STBC")
- }
- }
- if self.Known.TXOPPSNotAllowed() {
- if self.Flags.TXOPPSNotAllowed() {
- tokens = append(tokens, "TXOP doze not allowed")
- } else {
- tokens = append(tokens, "TXOP doze allowed")
- }
- }
- if self.Known.GI() {
- if self.Flags.SGI() {
- tokens = append(tokens, "short GI")
- } else {
- tokens = append(tokens, "long GI")
- }
- }
- if self.Known.SGINSYMDisambiguation() {
- if self.Flags.SGINSYMMod() {
- tokens = append(tokens, "NSYM mod 10=9")
- } else {
- tokens = append(tokens, "NSYM mod 10!=9 or no short GI")
- }
- }
- if self.Known.LDPCExtraOFDMSymbol() {
- if self.Flags.LDPCExtraOFDMSymbol() {
- tokens = append(tokens, "LDPC extra OFDM symbols")
- } else {
- tokens = append(tokens, "no LDPC extra OFDM symbols")
- }
- }
- if self.Known.Beamformed() {
- if self.Flags.Beamformed() {
- tokens = append(tokens, "beamformed")
- } else {
- tokens = append(tokens, "no beamformed")
- }
- }
- if self.Known.Bandwidth() {
- token := "?"
- switch self.Bandwidth & 0x1f {
- case 0:
- token = "20"
- case 1:
- token = "40"
- case 2:
- token = "40(20L)"
- case 3:
- token = "40(20U)"
- case 4:
- token = "80"
- case 5:
- token = "80(40L)"
- case 6:
- token = "80(40U)"
- case 7:
- token = "80(20LL)"
- case 8:
- token = "80(20LU)"
- case 9:
- token = "80(20UL)"
- case 10:
- token = "80(20UU)"
- case 11:
- token = "160"
- case 12:
- token = "160(80L)"
- case 13:
- token = "160(80U)"
- case 14:
- token = "160(40LL)"
- case 15:
- token = "160(40LU)"
- case 16:
- token = "160(40UL)"
- case 17:
- token = "160(40UU)"
- case 18:
- token = "160(20LLL)"
- case 19:
- token = "160(20LLU)"
- case 20:
- token = "160(20LUL)"
- case 21:
- token = "160(20LUU)"
- case 22:
- token = "160(20ULL)"
- case 23:
- token = "160(20ULU)"
- case 24:
- token = "160(20UUL)"
- case 25:
- token = "160(20UUU)"
- }
- tokens = append(tokens, token)
- }
- for i, MCSNSS := range self.MCSNSS {
- if MCSNSS.Present() {
- fec := "?"
- switch self.Coding & (1 << uint8(i)) {
- case 0:
- fec = "BCC"
- case 1:
- fec = "LDPC"
- }
- tokens = append(tokens, fmt.Sprintf("user%d(%s,%s)", i, MCSNSS.String(), fec))
- }
- }
- if self.Known.GroupId() {
- tokens = append(tokens,
- fmt.Sprintf("group=%d", self.GroupId))
- }
- if self.Known.PartialAID() {
- tokens = append(tokens,
- fmt.Sprintf("partial-AID=%d", self.PartialAID))
- }
- return strings.Join(tokens, ",")
-}
-
-type RadioTapVHTKnown uint16
-
-const (
- RadioTapVHTKnownSTBC RadioTapVHTKnown = 1 << iota
- RadioTapVHTKnownTXOPPSNotAllowed
- RadioTapVHTKnownGI
- RadioTapVHTKnownSGINSYMDisambiguation
- RadioTapVHTKnownLDPCExtraOFDMSymbol
- RadioTapVHTKnownBeamformed
- RadioTapVHTKnownBandwidth
- RadioTapVHTKnownGroupId
- RadioTapVHTKnownPartialAID
-)
-
-func (self RadioTapVHTKnown) STBC() bool { return self&RadioTapVHTKnownSTBC != 0 }
-func (self RadioTapVHTKnown) TXOPPSNotAllowed() bool {
- return self&RadioTapVHTKnownTXOPPSNotAllowed != 0
-}
-func (self RadioTapVHTKnown) GI() bool { return self&RadioTapVHTKnownGI != 0 }
-func (self RadioTapVHTKnown) SGINSYMDisambiguation() bool {
- return self&RadioTapVHTKnownSGINSYMDisambiguation != 0
-}
-func (self RadioTapVHTKnown) LDPCExtraOFDMSymbol() bool {
- return self&RadioTapVHTKnownLDPCExtraOFDMSymbol != 0
-}
-func (self RadioTapVHTKnown) Beamformed() bool { return self&RadioTapVHTKnownBeamformed != 0 }
-func (self RadioTapVHTKnown) Bandwidth() bool { return self&RadioTapVHTKnownBandwidth != 0 }
-func (self RadioTapVHTKnown) GroupId() bool { return self&RadioTapVHTKnownGroupId != 0 }
-func (self RadioTapVHTKnown) PartialAID() bool { return self&RadioTapVHTKnownPartialAID != 0 }
-
-type RadioTapVHTFlags uint8
-
-const (
- RadioTapVHTFlagsSTBC RadioTapVHTFlags = 1 << iota
- RadioTapVHTFlagsTXOPPSNotAllowed
- RadioTapVHTFlagsSGI
- RadioTapVHTFlagsSGINSYMMod
- RadioTapVHTFlagsLDPCExtraOFDMSymbol
- RadioTapVHTFlagsBeamformed
-)
-
-func (self RadioTapVHTFlags) STBC() bool { return self&RadioTapVHTFlagsSTBC != 0 }
-func (self RadioTapVHTFlags) TXOPPSNotAllowed() bool {
- return self&RadioTapVHTFlagsTXOPPSNotAllowed != 0
-}
-func (self RadioTapVHTFlags) SGI() bool { return self&RadioTapVHTFlagsSGI != 0 }
-func (self RadioTapVHTFlags) SGINSYMMod() bool { return self&RadioTapVHTFlagsSGINSYMMod != 0 }
-func (self RadioTapVHTFlags) LDPCExtraOFDMSymbol() bool {
- return self&RadioTapVHTFlagsLDPCExtraOFDMSymbol != 0
-}
-func (self RadioTapVHTFlags) Beamformed() bool { return self&RadioTapVHTFlagsBeamformed != 0 }
-
-type RadioTapVHTMCSNSS uint8
-
-func (self RadioTapVHTMCSNSS) Present() bool {
- return self&0x0F != 0
-}
-
-func (self RadioTapVHTMCSNSS) String() string {
- return fmt.Sprintf("NSS#%dMCS#%d", uint32(self&0xf), uint32(self>>4))
-}
-
-func decodeRadioTap(data []byte, p gopacket.PacketBuilder) error {
- d := &RadioTap{}
- // TODO: Should we set LinkLayer here? And implement LinkFlow
- return decodingLayerDecoder(d, data, p)
-}
-
-type RadioTap struct {
- BaseLayer
-
- // Version 0. Only increases for drastic changes, introduction of compatible new fields does not count.
- Version uint8
- // Length of the whole header in bytes, including it_version, it_pad, it_len, and data fields.
- Length uint16
- // Present is a bitmap telling which fields are present. Set bit 31 (0x80000000) to extend the bitmap by another 32 bits. Additional extensions are made by setting bit 31.
- Present RadioTapPresent
- // TSFT: value in microseconds of the MAC's 64-bit 802.11 Time Synchronization Function timer when the first bit of the MPDU arrived at the MAC. For received frames, only.
- TSFT uint64
- Flags RadioTapFlags
- // Rate Tx/Rx data rate
- Rate RadioTapRate
- // ChannelFrequency Tx/Rx frequency in MHz, followed by flags
- ChannelFrequency RadioTapChannelFrequency
- ChannelFlags RadioTapChannelFlags
- // FHSS For frequency-hopping radios, the hop set (first byte) and pattern (second byte).
- FHSS uint16
- // DBMAntennaSignal RF signal power at the antenna, decibel difference from one milliwatt.
- DBMAntennaSignal int8
- // DBMAntennaNoise RF noise power at the antenna, decibel difference from one milliwatt.
- DBMAntennaNoise int8
- // LockQuality Quality of Barker code lock. Unitless. Monotonically nondecreasing with "better" lock strength. Called "Signal Quality" in datasheets.
- LockQuality uint16
- // TxAttenuation Transmit power expressed as unitless distance from max power set at factory calibration. 0 is max power. Monotonically nondecreasing with lower power levels.
- TxAttenuation uint16
- // DBTxAttenuation Transmit power expressed as decibel distance from max power set at factory calibration. 0 is max power. Monotonically nondecreasing with lower power levels.
- DBTxAttenuation uint16
- // DBMTxPower Transmit power expressed as dBm (decibels from a 1 milliwatt reference). This is the absolute power level measured at the antenna port.
- DBMTxPower int8
- // Antenna Unitless indication of the Rx/Tx antenna for this packet. The first antenna is antenna 0.
- Antenna uint8
- // DBAntennaSignal RF signal power at the antenna, decibel difference from an arbitrary, fixed reference.
- DBAntennaSignal uint8
- // DBAntennaNoise RF noise power at the antenna, decibel difference from an arbitrary, fixed reference point.
- DBAntennaNoise uint8
- //
- RxFlags RadioTapRxFlags
- TxFlags RadioTapTxFlags
- RtsRetries uint8
- DataRetries uint8
- MCS RadioTapMCS
- AMPDUStatus RadioTapAMPDUStatus
- VHT RadioTapVHT
-}
-
-func (m *RadioTap) LayerType() gopacket.LayerType { return LayerTypeRadioTap }
-
-func (m *RadioTap) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error {
- m.Version = uint8(data[0])
- m.Length = binary.LittleEndian.Uint16(data[2:4])
- m.Present = RadioTapPresent(binary.LittleEndian.Uint32(data[4:8]))
-
- offset := uint16(4)
-
- for (binary.LittleEndian.Uint32(data[offset:offset+4]) & 0x80000000) != 0 {
- // This parser only handles standard radiotap namespace,
- // and expects all fields are packed in the first it_present.
- // Extended bitmap will be just ignored.
- offset += 4
- }
- offset += 4 // skip the bitmap
-
- if m.Present.TSFT() {
- offset += align(offset, 8)
- m.TSFT = binary.LittleEndian.Uint64(data[offset : offset+8])
- offset += 8
- }
- if m.Present.Flags() {
- m.Flags = RadioTapFlags(data[offset])
- offset++
- }
- if m.Present.Rate() {
- m.Rate = RadioTapRate(data[offset])
- offset++
- }
- if m.Present.Channel() {
- offset += align(offset, 2)
- m.ChannelFrequency = RadioTapChannelFrequency(binary.LittleEndian.Uint16(data[offset : offset+2]))
- offset += 2
- m.ChannelFlags = RadioTapChannelFlags(binary.LittleEndian.Uint16(data[offset : offset+2]))
- offset += 2
- }
- if m.Present.FHSS() {
- m.FHSS = binary.LittleEndian.Uint16(data[offset : offset+2])
- offset += 2
- }
- if m.Present.DBMAntennaSignal() {
- m.DBMAntennaSignal = int8(data[offset])
- offset++
- }
- if m.Present.DBMAntennaNoise() {
- m.DBMAntennaNoise = int8(data[offset])
- offset++
- }
- if m.Present.LockQuality() {
- offset += align(offset, 2)
- m.LockQuality = binary.LittleEndian.Uint16(data[offset : offset+2])
- offset += 2
- }
- if m.Present.TxAttenuation() {
- offset += align(offset, 2)
- m.TxAttenuation = binary.LittleEndian.Uint16(data[offset : offset+2])
- offset += 2
- }
- if m.Present.DBTxAttenuation() {
- offset += align(offset, 2)
- m.DBTxAttenuation = binary.LittleEndian.Uint16(data[offset : offset+2])
- offset += 2
- }
- if m.Present.DBMTxPower() {
- m.DBMTxPower = int8(data[offset])
- offset++
- }
- if m.Present.Antenna() {
- m.Antenna = uint8(data[offset])
- offset++
- }
- if m.Present.DBAntennaSignal() {
- m.DBAntennaSignal = uint8(data[offset])
- offset++
- }
- if m.Present.DBAntennaNoise() {
- m.DBAntennaNoise = uint8(data[offset])
- offset++
- }
- if m.Present.RxFlags() {
- offset += align(offset, 2)
- m.RxFlags = RadioTapRxFlags(binary.LittleEndian.Uint16(data[offset:]))
- offset += 2
- }
- if m.Present.TxFlags() {
- offset += align(offset, 2)
- m.TxFlags = RadioTapTxFlags(binary.LittleEndian.Uint16(data[offset:]))
- offset += 2
- }
- if m.Present.RtsRetries() {
- m.RtsRetries = uint8(data[offset])
- offset++
- }
- if m.Present.DataRetries() {
- m.DataRetries = uint8(data[offset])
- offset++
- }
- if m.Present.MCS() {
- m.MCS = RadioTapMCS{
- RadioTapMCSKnown(data[offset]),
- RadioTapMCSFlags(data[offset+1]),
- uint8(data[offset+2]),
- }
- offset += 3
- }
- if m.Present.AMPDUStatus() {
- offset += align(offset, 4)
- m.AMPDUStatus = RadioTapAMPDUStatus{
- Reference: binary.LittleEndian.Uint32(data[offset:]),
- Flags: RadioTapAMPDUStatusFlags(binary.LittleEndian.Uint16(data[offset+4:])),
- CRC: uint8(data[offset+6]),
- }
- offset += 8
- }
- if m.Present.VHT() {
- offset += align(offset, 2)
- m.VHT = RadioTapVHT{
- Known: RadioTapVHTKnown(binary.LittleEndian.Uint16(data[offset:])),
- Flags: RadioTapVHTFlags(data[offset+2]),
- Bandwidth: uint8(data[offset+3]),
- MCSNSS: [4]RadioTapVHTMCSNSS{
- RadioTapVHTMCSNSS(data[offset+4]),
- RadioTapVHTMCSNSS(data[offset+5]),
- RadioTapVHTMCSNSS(data[offset+6]),
- RadioTapVHTMCSNSS(data[offset+7]),
- },
- Coding: uint8(data[offset+8]),
- GroupId: uint8(data[offset+9]),
- PartialAID: binary.LittleEndian.Uint16(data[offset+10:]),
- }
- offset += 12
- }
-
- payload := data[m.Length:]
- if !m.Flags.FCS() { // Dot11.DecodeFromBytes() expects FCS present
- fcs := make([]byte, 4)
- h := crc32.NewIEEE()
- h.Write(payload)
- binary.LittleEndian.PutUint32(fcs, h.Sum32())
- payload = append(payload, fcs...)
- }
- m.BaseLayer = BaseLayer{Contents: data[:m.Length], Payload: payload}
-
- return nil
-}
-
-func (m RadioTap) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error {
- buf := make([]byte, 1024)
-
- buf[0] = m.Version
- buf[1] = 0
-
- binary.LittleEndian.PutUint32(buf[4:8], uint32(m.Present))
-
- offset := uint16(4)
-
- for (binary.LittleEndian.Uint32(buf[offset:offset+4]) & 0x80000000) != 0 {
- offset += 4
- }
-
- offset += 4
-
- if m.Present.TSFT() {
- offset += align(offset, 8)
- binary.LittleEndian.PutUint64(buf[offset:offset+8], m.TSFT)
- offset += 8
- }
-
- if m.Present.Flags() {
- buf[offset] = uint8(m.Flags)
- offset++
- }
-
- if m.Present.Rate() {
- buf[offset] = uint8(m.Rate)
- offset++
- }
-
- if m.Present.Channel() {
- offset += align(offset, 2)
- binary.LittleEndian.PutUint16(buf[offset:offset+2], uint16(m.ChannelFrequency))
- offset += 2
- binary.LittleEndian.PutUint16(buf[offset:offset+2], uint16(m.ChannelFlags))
- offset += 2
- }
-
- if m.Present.FHSS() {
- binary.LittleEndian.PutUint16(buf[offset:offset+2], m.FHSS)
- offset += 2
- }
-
- if m.Present.DBMAntennaSignal() {
- buf[offset] = byte(m.DBMAntennaSignal)
- offset++
- }
-
- if m.Present.DBMAntennaNoise() {
- buf[offset] = byte(m.DBMAntennaNoise)
- offset++
- }
-
- if m.Present.LockQuality() {
- offset += align(offset, 2)
- binary.LittleEndian.PutUint16(buf[offset:offset+2], m.LockQuality)
- offset += 2
- }
-
- if m.Present.TxAttenuation() {
- offset += align(offset, 2)
- binary.LittleEndian.PutUint16(buf[offset:offset+2], m.TxAttenuation)
- offset += 2
- }
-
- if m.Present.DBTxAttenuation() {
- offset += align(offset, 2)
- binary.LittleEndian.PutUint16(buf[offset:offset+2], m.DBTxAttenuation)
- offset += 2
- }
-
- if m.Present.DBMTxPower() {
- buf[offset] = byte(m.DBMTxPower)
- offset++
- }
-
- if m.Present.Antenna() {
- buf[offset] = uint8(m.Antenna)
- offset++
- }
-
- if m.Present.DBAntennaSignal() {
- buf[offset] = uint8(m.DBAntennaSignal)
- offset++
- }
-
- if m.Present.DBAntennaNoise() {
- buf[offset] = uint8(m.DBAntennaNoise)
- offset++
- }
-
- if m.Present.RxFlags() {
- offset += align(offset, 2)
- binary.LittleEndian.PutUint16(buf[offset:offset+2], uint16(m.RxFlags))
- offset += 2
- }
-
- if m.Present.TxFlags() {
- offset += align(offset, 2)
- binary.LittleEndian.PutUint16(buf[offset:offset+2], uint16(m.TxFlags))
- offset += 2
- }
-
- if m.Present.RtsRetries() {
- buf[offset] = m.RtsRetries
- offset++
- }
-
- if m.Present.DataRetries() {
- buf[offset] = m.DataRetries
- offset++
- }
-
- if m.Present.MCS() {
- buf[offset] = uint8(m.MCS.Known)
- buf[offset+1] = uint8(m.MCS.Flags)
- buf[offset+2] = uint8(m.MCS.MCS)
-
- offset += 3
- }
-
- if m.Present.AMPDUStatus() {
- offset += align(offset, 4)
-
- binary.LittleEndian.PutUint32(buf[offset:offset+4], m.AMPDUStatus.Reference)
- binary.LittleEndian.PutUint16(buf[offset+4:offset+6], uint16(m.AMPDUStatus.Flags))
-
- buf[offset+6] = m.AMPDUStatus.CRC
-
- offset += 8
- }
-
- if m.Present.VHT() {
- offset += align(offset, 2)
-
- binary.LittleEndian.PutUint16(buf[offset:], uint16(m.VHT.Known))
-
- buf[offset+2] = uint8(m.VHT.Flags)
- buf[offset+3] = uint8(m.VHT.Bandwidth)
- buf[offset+4] = uint8(m.VHT.MCSNSS[0])
- buf[offset+5] = uint8(m.VHT.MCSNSS[1])
- buf[offset+6] = uint8(m.VHT.MCSNSS[2])
- buf[offset+7] = uint8(m.VHT.MCSNSS[3])
- buf[offset+8] = uint8(m.VHT.Coding)
- buf[offset+9] = uint8(m.VHT.GroupId)
-
- binary.LittleEndian.PutUint16(buf[offset+10:offset+12], m.VHT.PartialAID)
-
- offset += 12
- }
-
- packetBuf, err := b.PrependBytes(int(offset))
-
- if err != nil {
- return err
- }
-
- if opts.FixLengths {
- m.Length = offset
- }
-
- binary.LittleEndian.PutUint16(buf[2:4], m.Length)
-
- copy(packetBuf, buf)
-
- return nil
-}
-
-func (m *RadioTap) CanDecode() gopacket.LayerClass { return LayerTypeRadioTap }
-func (m *RadioTap) NextLayerType() gopacket.LayerType { return LayerTypeDot11 }