v3

package
v1.11.0-cni-plu...-271081e Latest Latest
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 Go to latest Published: Nov 30, 2024 License: Apache-2.0, Apache-2.0 Imports: 7 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	VoCreated   int = 0
	VoLastSeen  int = 8
	VoType      int = 16
	VoFlags     int = 17
	VoFlags2    int = 23
	VoRevKey    int = 24
	VoLegAB     int = 24
	VoLegBA     int = 48
	VoOrigIP    int = 76
	VoOrigPort  int = 80
	VoOrigSPort int = 82
	VoOrigSIP   int = 84
	VoTunIP     int = 72
	VoNATSPort  int = 40
)
View Source 
const (
	TypeNormal uint8 = iota
	TypeNATForward
	TypeNATReverse

	FlagNATOut    uint16 = (1 << 0)
	FlagNATFwdDsr uint16 = (1 << 1)
	FlagNATNPFwd  uint16 = (1 << 2)
	FlagSkipFIB   uint16 = (1 << 3)
	FlagReserved4 uint16 = (1 << 4)
	FlagReserved5 uint16 = (1 << 5)
	FlagExtLocal  uint16 = (1 << 6)
	FlagViaNATIf  uint16 = (1 << 7)
	FlagSrcDstBA  uint16 = (1 << 8)
	FlagHostPSNAT uint16 = (1 << 9)
	FlagSvcSelf   uint16 = (1 << 10)
	FlagNPLoop    uint16 = (1 << 11)
	FlagNPRemote  uint16 = (1 << 12)
	FlagNoDSR     uint16 = (1 << 13)
)
View Source 
const (
	VoCreatedV6   int = 0
	VoLastSeenV6  int = 8
	VoTypeV6      int = 16
	VoFlagsV6     int = 17
	VoFlags2V6    int = 23
	VoRevKeyV6    int = 24
	VoLegABV6     int = 24
	VoLegBAV6     int = 48
	VoTunIPV6     int = 72
	VoOrigIPV6    int = VoTunIPV6 + 16
	VoOrigPortV6  int = VoOrigIPV6 + 16
	VoOrigSPortV6 int = VoOrigPortV6 + 2
	VoOrigSIPV6   int = VoOrigSPortV6 + 2
	VoNATSPortV6  int = VoRevKeyV6 + KeyV6Size
)
View Source 
const KeySize = 16
struct calico_ct_key {
  uint32_t protocol;
  __be32 addr_a, addr_b; // NBO
  uint16_t port_a, port_b; // HBO
};
View Source 
const KeyV6Size = 40
struct calico_ct_key {
  uint32_t protocol;
  __be32 addr_a, addr_b; // NBO
  uint16_t port_a, port_b; // HBO
};
View Source 
const MaxEntries = 512000
View Source 
const ValueSize = 88
View Source 
const ValueV6Size = 128

Variables

View Source 
var MapParams = maps.MapParameters{
	Type:         "hash",
	KeySize:      KeySize,
	ValueSize:    ValueSize,
	MaxEntries:   MaxEntries,
	Name:         "cali_v4_ct",
	Flags:        unix.BPF_F_NO_PREALLOC,
	Version:      3,
	UpdatedByBPF: true,
}
View Source 
var MapParamsV6 = maps.MapParameters{
	Type:         "hash",
	KeySize:      KeyV6Size,
	ValueSize:    ValueV6Size,
	MaxEntries:   MaxEntries,
	Name:         "cali_v6_ct",
	Flags:        unix.BPF_F_NO_PREALLOC,
	Version:      3,
	UpdatedByBPF: true,
}

Functions

func MapMemIter 

func MapMemIter(m MapMem) func(k, v []byte)

MapMemIter returns maps.MapIter that loads the provided MapMem

func MapMemIterV6 

func MapMemIterV6(m MapMemV6) func(k, v []byte)

MapMemIterV6 returns maps.MapIter that loads the provided MapMemV6

Types

type EntryData 

type EntryData struct {
	A2B       Leg
	B2A       Leg
	OrigDst   net.IP
	OrigSrc   net.IP
	OrigPort  uint16
	OrigSPort uint16
	TunIP     net.IP
}

func (EntryData) Established 

func (data EntryData) Established() bool

func (EntryData) FINsSeen 

func (data EntryData) FINsSeen() bool

func (EntryData) FINsSeenDSR 

func (data EntryData) FINsSeenDSR() bool

func (EntryData) RSTSeen 

func (data EntryData) RSTSeen() bool

type Key 

type Key [KeySize]byte

func NewKey 

func NewKey(proto uint8, ipA net.IP, portA uint16, ipB net.IP, portB uint16) Key

func (Key) AddrA 

func (k Key) AddrA() net.IP

func (Key) AddrB 

func (k Key) AddrB() net.IP

func (Key) AsBytes 

func (k Key) AsBytes() []byte

func (Key) PortA 

func (k Key) PortA() uint16

func (Key) PortB 

func (k Key) PortB() uint16

func (Key) Proto 

func (k Key) Proto() uint8

func (Key) String 

func (k Key) String() string

func (Key) Upgrade 

func (k Key) Upgrade() maps.Upgradable

type KeyInterface 

type KeyInterface interface {
	Proto() uint8
	AddrA() net.IP
	PortA() uint16
	AddrB() net.IP
	PortB() uint16
	String() string
	AsBytes() []byte
}

func KeyFromBytes 

func KeyFromBytes(k []byte) KeyInterface

func KeyV6FromBytes 

func KeyV6FromBytes(k []byte) KeyInterface

type KeyV6 

type KeyV6 [KeyV6Size]byte

func NewKeyV6 

func NewKeyV6(proto uint8, ipA net.IP, portA uint16, ipB net.IP, portB uint16) KeyV6

func (KeyV6) AddrA 

func (k KeyV6) AddrA() net.IP

func (KeyV6) AddrB 

func (k KeyV6) AddrB() net.IP

func (KeyV6) AsBytes 

func (k KeyV6) AsBytes() []byte

func (KeyV6) PortA 

func (k KeyV6) PortA() uint16

func (KeyV6) PortB 

func (k KeyV6) PortB() uint16

func (KeyV6) Proto 

func (k KeyV6) Proto() uint8

func (KeyV6) String 

func (k KeyV6) String() string

func (KeyV6) Upgrade 

func (k KeyV6) Upgrade() maps.Upgradable

type Leg 

type Leg struct {
	Bytes    uint64
	Packets  uint32
	Seqno    uint32
	SynSeen  bool
	AckSeen  bool
	FinSeen  bool
	RstSeen  bool
	Approved bool
	Opener   bool
	Ifindex  uint32
}

func (Leg) AsBytes 

func (leg Leg) AsBytes() []byte

AsBytes returns Leg serialized as a slice of bytes

func (Leg) Flags 

func (leg Leg) Flags() uint32

type MapMem 

type MapMem map[Key]Value

func LoadMapMem 

func LoadMapMem(m maps.Map) (MapMem, error)

LoadMapMem loads ConntrackMap into memory

type MapMemV6 

type MapMemV6 map[KeyV6]ValueV6

func LoadMapMemV6 

func LoadMapMemV6(m maps.Map) (MapMemV6, error)

LoadMapMem loads ConntrackMap into memory

type Value 

type Value [ValueSize]byte

func NewValueNATForward 

func NewValueNATForward(created, lastSeen time.Duration, flags uint16, revKey Key) Value

NewValueNATForward creates a new Value of type TypeNATForward for the given arguments and the reverse key

func NewValueNATReverse 

func NewValueNATReverse(created, lastSeen time.Duration, flags uint16, legA, legB Leg,
	tunnelIP, origIP net.IP, origPort uint16) Value

NewValueNATReverse creates a new Value of type TypeNATReverse for the given arguments and reverse parameters

func NewValueNATReverseSNAT 

func NewValueNATReverseSNAT(created, lastSeen time.Duration, flags uint16, legA, legB Leg,
	tunnelIP, origIP, origSrcIP net.IP, origPort uint16) Value

NewValueNATReverseSNAT in addition to NewValueNATReverse sets the orig source IP

func NewValueNormal 

func NewValueNormal(created, lastSeen time.Duration, flags uint16, legA, legB Leg) Value

NewValueNormal creates a new Value of type TypeNormal based on the given parameters

func (Value) AsBytes 

func (e Value) AsBytes() []byte

AsBytes returns the value as slice of bytes

func (Value) Created 

func (e Value) Created() int64

func (Value) Data 

func (e Value) Data() EntryData

func (Value) Flags 

func (e Value) Flags() uint16

func (Value) IsForwardDSR 

func (e Value) IsForwardDSR() bool

func (Value) LastSeen 

func (e Value) LastSeen() int64

func (Value) NATSPort 

func (e Value) NATSPort() uint16

NATSPort returns the port to SNAT to, valid only if Type() is TypeNATForward.

func (Value) OrigIP 

func (e Value) OrigIP() net.IP

OrigIP returns the original destination IP, valid only if Type() is TypeNormal or TypeNATReverse

func (Value) OrigPort 

func (e Value) OrigPort() uint16

OrigPort returns the original destination port, valid only if Type() is TypeNormal or TypeNATReverse

func (Value) OrigSPort 

func (e Value) OrigSPort() uint16

OrigSPort returns the original source port, valid only if Type() is TypeNATReverse and if the value returned is non-zero.

func (Value) OrigSrcIP 

func (e Value) OrigSrcIP() net.IP

OrigSrcIP returns the original source IP.

func (Value) ReverseNATKey 

func (e Value) ReverseNATKey() KeyInterface

func (*Value) SetLegA2B 

func (e *Value) SetLegA2B(leg Leg)

func (*Value) SetLegB2A 

func (e *Value) SetLegB2A(leg Leg)

func (*Value) SetNATSport 

func (e *Value) SetNATSport(sport uint16)

func (*Value) SetOrigSport 

func (e *Value) SetOrigSport(sport uint16)

func (Value) String 

func (e Value) String() string

func (Value) Type 

func (e Value) Type() uint8

func (Value) Upgrade 

func (e Value) Upgrade() maps.Upgradable

type ValueInterface 

type ValueInterface interface {
	Created() int64
	LastSeen() int64
	Type() uint8
	Flags() uint16
	OrigIP() net.IP
	OrigPort() uint16
	OrigSPort() uint16
	NATSPort() uint16
	OrigSrcIP() net.IP
	ReverseNATKey() KeyInterface
	AsBytes() []byte
	Data() EntryData
	IsForwardDSR() bool
	String() string
}

func ValueFromBytes 

func ValueFromBytes(v []byte) ValueInterface

func ValueV6FromBytes 

func ValueV6FromBytes(v []byte) ValueInterface

type ValueV6 

type ValueV6 [ValueV6Size]byte

func NewValueV6NATForward 

func NewValueV6NATForward(created, lastSeen time.Duration, flags uint16, revKey KeyV6) ValueV6

NewValueV6NATForward creates a new ValueV6 of type TypeNATForward for the given arguments and the reverse key

func NewValueV6NATReverse 

func NewValueV6NATReverse(created, lastSeen time.Duration, flags uint16, legA, legB Leg,
	tunnelIP, origIP net.IP, origPort uint16) ValueV6

NewValueV6NATReverse creates a new ValueV6 of type TypeNATReverse for the given arguments and reverse parameters

func NewValueV6NATReverseSNAT 

func NewValueV6NATReverseSNAT(created, lastSeen time.Duration, flags uint16, legA, legB Leg,
	tunnelIP, origIP, origSrcIP net.IP, origPort uint16) ValueV6

NewValueV6NATReverseSNAT in addition to NewValueV6NATReverse sets the orig source IP

func NewValueV6Normal 

func NewValueV6Normal(created, lastSeen time.Duration, flags uint16, legA, legB Leg) ValueV6

NewValueV6Normal creates a new ValueV6 of type TypeNormal based on the given parameters

func (ValueV6) AsBytes 

func (e ValueV6) AsBytes() []byte

AsBytes returns the value as slice of bytes

func (ValueV6) Created 

func (e ValueV6) Created() int64

func (ValueV6) Data 

func (e ValueV6) Data() EntryData

func (ValueV6) Flags 

func (e ValueV6) Flags() uint16

func (ValueV6) IsForwardDSR 

func (e ValueV6) IsForwardDSR() bool

func (ValueV6) LastSeen 

func (e ValueV6) LastSeen() int64

func (ValueV6) NATSPort 

func (e ValueV6) NATSPort() uint16

NATSPort returns the port to SNAT to, valid only if Type() is TypeNATForward.

func (ValueV6) OrigIP 

func (e ValueV6) OrigIP() net.IP

OrigIP returns the original destination IP, valid only if Type() is TypeNormal or TypeNATReverse

func (ValueV6) OrigPort 

func (e ValueV6) OrigPort() uint16

OrigPort returns the original destination port, valid only if Type() is TypeNormal or TypeNATReverse

func (ValueV6) OrigSPort 

func (e ValueV6) OrigSPort() uint16

OrigSPort returns the original source port, valid only if Type() is TypeNATReverse and if the value returned is non-zero.

func (ValueV6) OrigSrcIP 

func (e ValueV6) OrigSrcIP() net.IP

OrigSrcIP returns the original source IP.

func (ValueV6) ReverseNATKey 

func (e ValueV6) ReverseNATKey() KeyInterface

func (*ValueV6) SetLegA2B 

func (e *ValueV6) SetLegA2B(leg Leg)

func (*ValueV6) SetLegB2A 

func (e *ValueV6) SetLegB2A(leg Leg)

func (*ValueV6) SetNATSport 

func (e *ValueV6) SetNATSport(sport uint16)

func (*ValueV6) SetOrigSport 

func (e *ValueV6) SetOrigSport(sport uint16)

func (ValueV6) String 

func (e ValueV6) String() string

func (ValueV6) Type 

func (e ValueV6) Type() uint8

func (ValueV6) Upgrade 

func (e ValueV6) Upgrade() maps.Upgradable

Source Files

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