nat

package

v0.9.1 Latest Latest Go to latest Published: Oct 1, 2019 License: BSD-3-Clause Imports: 24 Imported by: 0

Details

Valid go.mod file

The Go module system was introduced in Go 1.11 and is the official dependency management solution for Go.
Redistributable license

Redistributable licenses place minimal restrictions on how software can be used, modified, and redistributed.
Tagged version

Modules with tagged versions give importers more predictable builds.
Stable version

When a project reaches major version v1 it is considered stable.
Learn more about best practices

Repository

github.com/intel-go/nff-go-nat

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
Variables
func CheckHWOffloading() bool
func CloseAllDumpFiles()
func InitFlows()
func OptionsLen(options layers.DHCPv6Options) int
func ParseAllKnownL4(pkt *packet.Packet, pktIPv4 *packet.IPv4Hdr, pktIPv6 *packet.IPv6Hdr) (uint8, *packet.TCPHdr, *packet.UDPHdr, *packet.ICMPHdr, uint16, uint16)
func PrivateToPublicTranslation(pkt *packet.Packet, ctx flow.UserContext) uint
func PublicToPrivateTranslation(pkt *packet.Packet, ctx flow.UserContext) uint
func ReadConfig(fileName string, setKniIP, bringUpKniInterfaces bool) error
func StartDHCPClient()
func StartGRPCServer() error
func StringIPv4Int(addr uint32) string
type Config
type DHCPv6FQDN
- func (fqdn *DHCPv6FQDN) DecodeFromBytes(data []byte) error
- func (fqdn *DHCPv6FQDN) Encode() []byte
type DHCPv6FQDNFlags
type DHCPv6IAAddress
- func (ia *DHCPv6IAAddress) DecodeFromBytes(data []byte) error
- func (ia *DHCPv6IAAddress) Encode() []byte
type DHCPv6IANA
- func (iana *DHCPv6IANA) DecodeFromBytes(data []byte) error
- func (iana *DHCPv6IANA) Encode() []byte
type DHCPv6ServerStatusCode
- func (sc *DHCPv6ServerStatusCode) DecodeFromBytes(data []byte) error
- func (sc *DHCPv6ServerStatusCode) Encode() []byte
type Tuple
- func (t *Tuple) String() string
type Tuple6

Constants ¶

View Source

const (
	DirDROP = uint(upd.TraceType_DUMP_DROP)
	DirSEND = uint(upd.TraceType_DUMP_TRANSLATE)
	DirKNI  = uint(upd.TraceType_DUMP_KNI)
)

View Source

const (
	DHCPServerPort = 67
	DHCPClientPort = 68
	BroadcastIPv4  = types.IPv4Address(0xffffffff)
)

View Source

const (
	DHCPv6ClientPort = 546
	DHCPv6ServerPort = 547
)

View Source

const (
	GRPCServerPort = ":60602"
)

Variables ¶

View Source

var (
	// Natconfig is a config file.
	Natconfig *Config
	// CalculateChecksum is a flag whether checksums should be
	// calculated for modified packets.
	NoCalculateChecksum bool
	// HWTXChecksum is a flag whether checksums calculation should be
	// offloaded to HW.
	NoHWTXChecksum bool
	NeedKNI        bool
	NeedDHCP       bool

	// Debug variables
	DumpEnabled [DirKNI + 1]bool
)

View Source

var (
	BroadcastIPv6 = types.IPv6Address{
		0xff, 0x02, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x00,
		0x00, 0x01, 0x00, 0x02,
	}
	SingleIPMask = types.IPv6Address{
		0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff,
	}
	SingleIPNetMask = net.CIDRMask(128, 128)
)

View Source

var (
	BroadcastMAC = types.MACAddress{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}
)

Functions ¶

func CheckHWOffloading ¶

func CheckHWOffloading() bool

func CloseAllDumpFiles ¶

func CloseAllDumpFiles()

CloseAllDumpFiles closes all debug dump files.

func InitFlows ¶

func InitFlows()

InitFlows initializes flow graph for all interface pairs.

func OptionsLen ¶

func OptionsLen(options layers.DHCPv6Options) int

Returns length of data portion of option (excluding IANA code 3 and option length)

func ParseAllKnownL4 ¶

func ParseAllKnownL4(pkt *packet.Packet, pktIPv4 *packet.IPv4Hdr, pktIPv6 *packet.IPv6Hdr) (uint8, *packet.TCPHdr, *packet.UDPHdr, *packet.ICMPHdr, uint16, uint16)

func PrivateToPublicTranslation ¶

func PrivateToPublicTranslation(pkt *packet.Packet, ctx flow.UserContext) uint

PrivateToPublicTranslation does egress translation.

func PublicToPrivateTranslation ¶

func PublicToPrivateTranslation(pkt *packet.Packet, ctx flow.UserContext) uint

PublicToPrivateTranslation does ingress translation.

func ReadConfig ¶

func ReadConfig(fileName string, setKniIP, bringUpKniInterfaces bool) error

ReadConfig function reads and parses config file

func StartDHCPClient ¶

func StartDHCPClient()

func StartGRPCServer ¶

func StartGRPCServer() error

func StringIPv4Int ¶

func StringIPv4Int(addr uint32) string

Types ¶

type Config ¶

type Config struct {
	HostName  string     `json:"host-name"`
	PortPairs []portPair `json:"port-pairs"`
	// contains filtered or unexported fields
}

Config for NAT.

type DHCPv6FQDN ¶

type DHCPv6FQDN struct {
	Flags      DHCPv6FQDNFlags
	DomainName string
}

FQDN option encoded according to RFC 4704

func (*DHCPv6FQDN) DecodeFromBytes ¶

func (fqdn *DHCPv6FQDN) DecodeFromBytes(data []byte) error

func (*DHCPv6FQDN) Encode ¶

func (fqdn *DHCPv6FQDN) Encode() []byte

type DHCPv6FQDNFlags ¶

type DHCPv6FQDNFlags byte

const (
	DHCPv6OptFQDNOptionCode                layers.DHCPv6Opt = 39
	DHCPv6FQDNOptionServerUpdateForwardDNS DHCPv6FQDNFlags  = 1
	DHCPv6FQDNOptionServerOverride         DHCPv6FQDNFlags  = 2
	DHCPv6FQDNOptionServerNoDNSUpdate      DHCPv6FQDNFlags  = 4
)

type DHCPv6IAAddress ¶

type DHCPv6IAAddress struct {
	Address           net.IP
	PreferredLifetime uint32
	ValidLifetime     uint32
	Options           layers.DHCPv6Options
}

IA Address Option

func (*DHCPv6IAAddress) DecodeFromBytes ¶

func (ia *DHCPv6IAAddress) DecodeFromBytes(data []byte) error

func (*DHCPv6IAAddress) Encode ¶

func (ia *DHCPv6IAAddress) Encode() []byte

type DHCPv6IANA ¶

type DHCPv6IANA struct {
	IAID    uint32
	T1, T2  uint32
	Options layers.DHCPv6Options
}

Identity Association for Non-temporary Addresses Option

func (*DHCPv6IANA) DecodeFromBytes ¶

func (iana *DHCPv6IANA) DecodeFromBytes(data []byte) error

func (*DHCPv6IANA) Encode ¶

func (iana *DHCPv6IANA) Encode() []byte

type DHCPv6ServerStatusCode ¶

type DHCPv6ServerStatusCode struct {
	StatusCode    layers.DHCPv6StatusCode
	StatusMessage string
}

Server status code option

func (*DHCPv6ServerStatusCode) DecodeFromBytes ¶

func (sc *DHCPv6ServerStatusCode) DecodeFromBytes(data []byte) error

func (*DHCPv6ServerStatusCode) Encode ¶

func (sc *DHCPv6ServerStatusCode) Encode() []byte

type Tuple ¶

type Tuple struct {
	// contains filtered or unexported fields
}

Tuple is a pair of address and port.

func (*Tuple) String ¶

func (t *Tuple) String() string

type Tuple6 ¶

type Tuple6 struct {
	// contains filtered or unexported fields
}

Source Files ¶

View all Source files

?	: This menu
/	: Search site
f or F	: Jump to
y or Y	: Canonical URL