scmp

package
v0.0.0-...-c8fc2fc Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Mar 2, 2018 License: Apache-2.0 Imports: 9 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	ExtnErrorFlag = 0x1
	ExtnHBHFlag   = 0x2
)
View Source 
const (
	ErrorSCMPHdrUnpack = "Failed to unpack SCMP header"
)
View Source 
const (
	HdrLen = 16
)
View Source 
const (
	MetaLen = 8
)

Variables

This section is empty.

Functions

func NewError 

func NewError(class Class, type_ Type, info Info, e error) error

NewError creates a new SCMP Error with the specified scmp Class/Type/Info, and optional nested error.

Types

type Class 

type Class uint16
const (
	C_General Class = iota
	C_Routing
	C_CmnHdr
	C_Path
	C_Ext
	C_Sibra
)

func (Class) String 

func (c Class) String() string

type ClassType 

type ClassType struct {
	Class Class
	Type  Type
}

func (ClassType) String 

func (ct ClassType) String() string

type Error 

type Error struct {
	CT   ClassType
	Info Info
	Err  error
}

Error represents an SCMP error, with an optional nested error.

func ToError 

func ToError(e error) *Error

ToError converts an e to an Error. If that fails, it recurses on the nested error, if any, and otherwise returns nil.

func (*Error) Error 

func (e *Error) Error() string

func (*Error) GetErr 

func (e *Error) GetErr() error

func (*Error) TopError 

func (e *Error) TopError() string

type Extn 

type Extn struct {
	Error    bool
	HopByHop bool
}

func ExtnFromRaw 

func ExtnFromRaw(b common.RawBytes) (*Extn, error)

func (*Extn) Class 

func (e *Extn) Class() common.L4ProtocolType

func (*Extn) Copy 

func (e *Extn) Copy() common.Extension

func (*Extn) Len 

func (e *Extn) Len() int

func (*Extn) Pack 

func (e *Extn) Pack() (common.RawBytes, error)

func (*Extn) Reverse 

func (e *Extn) Reverse() (bool, error)

func (*Extn) String 

func (e *Extn) String() string

func (*Extn) Type 

func (e *Extn) Type() common.ExtnType

func (*Extn) Write 

func (e *Extn) Write(b common.RawBytes) error

type Hdr 

type Hdr struct {
	Class     Class           // SCMP message class
	Type      Type            // SCMP message type
	TotalLen  uint16          // Length of SCMP header + payload
	Checksum  common.RawBytes `struct:"[2]byte"`
	Timestamp uint64          // Time in µs since unix epoch
}

func HdrFromRaw 

func HdrFromRaw(b common.RawBytes) (*Hdr, error)

func NewHdr 

func NewHdr(ct ClassType, len int) *Hdr

func (*Hdr) Copy 

func (h *Hdr) Copy() l4.L4Header

func (*Hdr) GetCSum 

func (h *Hdr) GetCSum() common.RawBytes

func (*Hdr) L4Len 

func (h *Hdr) L4Len() int

func (*Hdr) L4Type 

func (h *Hdr) L4Type() common.L4ProtocolType

func (*Hdr) Pack 

func (h *Hdr) Pack(csum bool) (common.RawBytes, error)

func (*Hdr) Reverse 

func (h *Hdr) Reverse()

func (*Hdr) SetCSum 

func (h *Hdr) SetCSum(csum common.RawBytes)

func (*Hdr) SetPldLen 

func (h *Hdr) SetPldLen(l int)

func (*Hdr) String 

func (h *Hdr) String() string

func (*Hdr) Validate 

func (h *Hdr) Validate(plen int) error

func (*Hdr) Write 

func (h *Hdr) Write(b common.RawBytes) error

type Info 

type Info interface {
	fmt.Stringer
	Copy() Info
	Len() int
	Write(b common.RawBytes) (int, error)
}

func ParseInfo 

func ParseInfo(b common.RawBytes, ct ClassType) (Info, error)

type InfoEcho 

type InfoEcho struct {
	Id  uint16
	Seq uint16
}

func InfoEchoFromRaw 

func InfoEchoFromRaw(b common.RawBytes) (*InfoEcho, error)

func (*InfoEcho) Copy 

func (e *InfoEcho) Copy() Info

func (*InfoEcho) Len 

func (e *InfoEcho) Len() int

func (*InfoEcho) String 

func (e *InfoEcho) String() string

func (*InfoEcho) Write 

func (e *InfoEcho) Write(b common.RawBytes) (int, error)

type InfoExtIdx 

type InfoExtIdx struct {
	Idx uint8
}

func InfoExtIdxFromRaw 

func InfoExtIdxFromRaw(b common.RawBytes) (*InfoExtIdx, error)

func (*InfoExtIdx) Copy 

func (e *InfoExtIdx) Copy() Info

func (*InfoExtIdx) Len 

func (r *InfoExtIdx) Len() int

func (*InfoExtIdx) String 

func (e *InfoExtIdx) String() string

func (*InfoExtIdx) Write 

func (e *InfoExtIdx) Write(b common.RawBytes) (int, error)

type InfoPathOffsets 

type InfoPathOffsets struct {
	InfoF   uint16
	HopF    uint16
	IfID    uint16
	Ingress bool
}

func InfoPathOffsetsFromRaw 

func InfoPathOffsetsFromRaw(b common.RawBytes) (*InfoPathOffsets, error)

func (*InfoPathOffsets) Copy 

func (p *InfoPathOffsets) Copy() Info

func (*InfoPathOffsets) Len 

func (p *InfoPathOffsets) Len() int

func (*InfoPathOffsets) String 

func (p *InfoPathOffsets) String() string

func (*InfoPathOffsets) Write 

func (p *InfoPathOffsets) Write(b common.RawBytes) (int, error)

type InfoPktSize 

type InfoPktSize struct {
	Size uint16
	MTU  uint16
}

func InfoPktSizeFromRaw 

func InfoPktSizeFromRaw(b common.RawBytes) (*InfoPktSize, error)

func (*InfoPktSize) Copy 

func (p *InfoPktSize) Copy() Info

func (*InfoPktSize) Len 

func (p *InfoPktSize) Len() int

func (*InfoPktSize) String 

func (p *InfoPktSize) String() string

func (*InfoPktSize) Write 

func (p *InfoPktSize) Write(b common.RawBytes) (int, error)

type InfoRevocation 

type InfoRevocation struct {
	*InfoPathOffsets
	RevToken common.RawBytes
}

func InfoRevocationFromRaw 

func InfoRevocationFromRaw(b common.RawBytes) (*InfoRevocation, error)

func NewInfoRevocation 

func NewInfoRevocation(infoF, hopF, ifID uint16, ingress bool,
	revToken common.RawBytes) *InfoRevocation

func (*InfoRevocation) Copy 

func (r *InfoRevocation) Copy() Info

func (*InfoRevocation) Len 

func (r *InfoRevocation) Len() int

func (*InfoRevocation) String 

func (r *InfoRevocation) String() string

func (*InfoRevocation) Write 

func (r *InfoRevocation) Write(b common.RawBytes) (int, error)

type InfoString 

type InfoString string

func (InfoString) Copy 

func (s InfoString) Copy() Info

func (InfoString) Len 

func (s InfoString) Len() int

func (InfoString) String 

func (s InfoString) String() string

func (InfoString) Write 

func (s InfoString) Write(b common.RawBytes) (int, error)

type Meta 

type Meta struct {
	InfoLen    uint8
	CmnHdrLen  uint8
	AddrHdrLen uint8
	PathHdrLen uint8
	ExtHdrsLen uint8
	L4HdrLen   uint8
	L4Proto    common.L4ProtocolType
}

func MetaFromRaw 

func MetaFromRaw(b []byte) (*Meta, error)

func (*Meta) Copy 

func (m *Meta) Copy() *Meta

func (*Meta) String 

func (m *Meta) String() string

func (*Meta) Write 

func (m *Meta) Write(b common.RawBytes) error

type Payload 

type Payload struct {
	Meta    *Meta
	Info    Info
	CmnHdr  common.RawBytes
	AddrHdr common.RawBytes
	PathHdr common.RawBytes
	ExtHdrs common.RawBytes
	L4Hdr   common.RawBytes
	// contains filtered or unexported fields
}

func PldFromQuotes 

func PldFromQuotes(ct ClassType, info Info, l4 common.L4ProtocolType, f QuoteFunc) *Payload

func PldFromRaw 

func PldFromRaw(b common.RawBytes, ct ClassType) (*Payload, error)

func (*Payload) Copy 

func (p *Payload) Copy() (common.Payload, error)

func (*Payload) Len 

func (p *Payload) Len() int

func (*Payload) String 

func (p *Payload) String() string

func (*Payload) WritePld 

func (p *Payload) WritePld(b common.RawBytes) (int, error)

type QuoteFunc 

type QuoteFunc func(RawBlock) common.RawBytes

type RawBlock 

type RawBlock int

Used to specify parts of packets to quote 

const (
	RawCmnHdr RawBlock = iota
	RawAddrHdr
	RawPathHdr
	RawExtHdrs
	RawL4Hdr
)

type Type 

type Type uint16
const (
	T_G_Unspecified Type = iota
	T_G_EchoRequest
	T_G_EchoReply
)

C_General types 

const (
	T_R_UnreachNet Type = iota
	T_R_UnreachHost
	T_R_L2Error
	T_R_UnreachProto
	T_R_UnreachPort
	T_R_UnknownHost
	T_R_BadHost
	T_R_OversizePkt
	T_R_AdminDenied
)

C_Routing types 

const (
	T_C_BadVersion Type = iota
	T_C_BadDstType
	T_C_BadSrcType
	T_C_BadPktLen
	T_C_BadInfoFOffset
	T_C_BadHopFOffset
)

C_CmnHdr types 

const (
	T_P_PathRequired Type = iota
	T_P_BadMac
	T_P_ExpiredHopF
	T_P_BadIF
	T_P_RevokedIF
	T_P_NonRoutingHopF
	T_P_DeliveryFwdOnly
	T_P_DeliveryNonLocal
	T_P_BadSegment
	T_P_BadInfoField
	T_P_BadHopField
)

C_Path types 

const (
	T_E_TooManyHopbyHop Type = iota
	T_E_BadExtOrder
	T_E_BadHopByHop
	T_E_BadEnd2End
)

C_Ext types 

const (
	T_S_BadVersion Type = iota
	T_S_SetupNoReq
)

C_Sibra types

func (Type) Name 

func (t Type) Name(c Class) string

Source Files

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