nl

package
v0.2.0 Latest Latest
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 Go to latest Published: Mar 20, 2015 License: Apache-2.0, Apache-2.0 Imports: 7 Imported by: 0

Documentation

Overview

Package nl has low level primitives for making Netlink calls.

Index

Constants

View Source 
const (
	IFLA_INFO_UNSPEC = iota
	IFLA_INFO_KIND
	IFLA_INFO_DATA
	IFLA_INFO_XSTATS
	IFLA_INFO_MAX = IFLA_INFO_XSTATS
)
View Source 
const (
	IFLA_VLAN_UNSPEC = iota
	IFLA_VLAN_ID
	IFLA_VLAN_FLAGS
	IFLA_VLAN_EGRESS_QOS
	IFLA_VLAN_INGRESS_QOS
	IFLA_VLAN_PROTOCOL
	IFLA_VLAN_MAX = IFLA_VLAN_PROTOCOL
)
View Source 
const (
	VETH_INFO_UNSPEC = iota
	VETH_INFO_PEER
	VETH_INFO_MAX = VETH_INFO_PEER
)
View Source 
const (
	IFLA_VXLAN_UNSPEC = iota
	IFLA_VXLAN_ID
	IFLA_VXLAN_GROUP
	IFLA_VXLAN_LINK
	IFLA_VXLAN_LOCAL
	IFLA_VXLAN_TTL
	IFLA_VXLAN_TOS
	IFLA_VXLAN_LEARNING
	IFLA_VXLAN_AGEING
	IFLA_VXLAN_LIMIT
	IFLA_VXLAN_PORT_RANGE
	IFLA_VXLAN_PROXY
	IFLA_VXLAN_RSC
	IFLA_VXLAN_L2MISS
	IFLA_VXLAN_L3MISS
	IFLA_VXLAN_PORT
	IFLA_VXLAN_GROUP6
	IFLA_VXLAN_LOCAL6
	IFLA_VXLAN_MAX = IFLA_VXLAN_LOCAL6
)
View Source 
const (
	BRIDGE_MODE_UNSPEC = iota
	BRIDGE_MODE_HAIRPIN
)
View Source 
const (
	IFLA_BRPORT_UNSPEC = iota
	IFLA_BRPORT_STATE
	IFLA_BRPORT_PRIORITY
	IFLA_BRPORT_COST
	IFLA_BRPORT_MODE
	IFLA_BRPORT_GUARD
	IFLA_BRPORT_PROTECT
	IFLA_BRPORT_FAST_LEAVE
	IFLA_BRPORT_LEARNING
	IFLA_BRPORT_UNICAST_FLOOD
	IFLA_BRPORT_MAX = IFLA_BRPORT_UNICAST_FLOOD
)
View Source 
const (
	IFLA_IPVLAN_UNSPEC = iota
	IFLA_IPVLAN_MODE
	IFLA_IPVLAN_MAX = IFLA_IPVLAN_MODE
)
View Source 
const (
	IFLA_MACVLAN_UNSPEC = iota
	IFLA_MACVLAN_MODE
	IFLA_MACVLAN_FLAGS
	IFLA_MACVLAN_MAX = IFLA_MACVLAN_FLAGS
)
View Source 
const (
	MACVLAN_MODE_PRIVATE  = 1
	MACVLAN_MODE_VEPA     = 2
	MACVLAN_MODE_BRIDGE   = 4
	MACVLAN_MODE_PASSTHRU = 8
	MACVLAN_MODE_SOURCE   = 16
)
View Source 
const (
	// Family type definitions
	FAMILY_ALL = syscall.AF_UNSPEC
	FAMILY_V4  = syscall.AF_INET
	FAMILY_V6  = syscall.AF_INET6
)
View Source 
const (
	XFRM_MSG_BASE        = 0x10
	XFRM_MSG_NEWSA       = 0x10
	XFRM_MSG_DELSA       = 0x11
	XFRM_MSG_GETSA       = 0x12
	XFRM_MSG_NEWPOLICY   = 0x13
	XFRM_MSG_DELPOLICY   = 0x14
	XFRM_MSG_GETPOLICY   = 0x15
	XFRM_MSG_ALLOCSPI    = 0x16
	XFRM_MSG_ACQUIRE     = 0x17
	XFRM_MSG_EXPIRE      = 0x18
	XFRM_MSG_UPDPOLICY   = 0x19
	XFRM_MSG_UPDSA       = 0x1a
	XFRM_MSG_POLEXPIRE   = 0x1b
	XFRM_MSG_FLUSHSA     = 0x1c
	XFRM_MSG_FLUSHPOLICY = 0x1d
	XFRM_MSG_NEWAE       = 0x1e
	XFRM_MSG_GETAE       = 0x1f
	XFRM_MSG_REPORT      = 0x20
	XFRM_MSG_MIGRATE     = 0x21
	XFRM_MSG_NEWSADINFO  = 0x22
	XFRM_MSG_GETSADINFO  = 0x23
	XFRM_MSG_NEWSPDINFO  = 0x24
	XFRM_MSG_GETSPDINFO  = 0x25
	XFRM_MSG_MAPPING     = 0x26
	XFRM_MSG_MAX         = 0x26
	XFRM_NR_MSGTYPES     = 0x17
)

Message Types

View Source 
const (
	/* Netlink message attributes.  */
	XFRMA_UNSPEC         = 0x00
	XFRMA_ALG_AUTH       = 0x01 /* struct xfrm_algo */
	XFRMA_ALG_CRYPT      = 0x02 /* struct xfrm_algo */
	XFRMA_ALG_COMP       = 0x03 /* struct xfrm_algo */
	XFRMA_ENCAP          = 0x04 /* struct xfrm_algo + struct xfrm_encap_tmpl */
	XFRMA_TMPL           = 0x05 /* 1 or more struct xfrm_user_tmpl */
	XFRMA_SA             = 0x06 /* struct xfrm_usersa_info  */
	XFRMA_POLICY         = 0x07 /* struct xfrm_userpolicy_info */
	XFRMA_SEC_CTX        = 0x08 /* struct xfrm_sec_ctx */
	XFRMA_LTIME_VAL      = 0x09
	XFRMA_REPLAY_VAL     = 0x0a
	XFRMA_REPLAY_THRESH  = 0x0b
	XFRMA_ETIMER_THRESH  = 0x0c
	XFRMA_SRCADDR        = 0x0d /* xfrm_address_t */
	XFRMA_COADDR         = 0x0e /* xfrm_address_t */
	XFRMA_LASTUSED       = 0x0f /* unsigned long  */
	XFRMA_POLICY_TYPE    = 0x10 /* struct xfrm_userpolicy_type */
	XFRMA_MIGRATE        = 0x11
	XFRMA_ALG_AEAD       = 0x12 /* struct xfrm_algo_aead */
	XFRMA_KMADDRESS      = 0x13 /* struct xfrm_user_kmaddress */
	XFRMA_ALG_AUTH_TRUNC = 0x14 /* struct xfrm_algo_auth */
	XFRMA_MARK           = 0x15 /* struct xfrm_mark */
	XFRMA_TFCPAD         = 0x16 /* __u32 */
	XFRMA_REPLAY_ESN_VAL = 0x17 /* struct xfrm_replay_esn */
	XFRMA_SA_EXTRA_FLAGS = 0x18 /* __u32 */
	XFRMA_MAX            = 0x18
)

Attribute types

View Source 
const (
	SizeofXfrmAddress     = 0x10
	SizeofXfrmSelector    = 0x38
	SizeofXfrmLifetimeCfg = 0x40
	SizeofXfrmLifetimeCur = 0x20
	SizeofXfrmId          = 0x18
)
View Source 
const (
	SizeofXfrmUserpolicyId   = 0x40
	SizeofXfrmUserpolicyInfo = 0xa8
	SizeofXfrmUserTmpl       = 0x40
)
View Source 
const (
	SizeofXfrmUsersaId   = 0x18
	SizeofXfrmStats      = 0x0c
	SizeofXfrmUsersaInfo = 0xe0
	SizeofXfrmAlgo       = 0x44
	SizeofXfrmAlgoAuth   = 0x48
	SizeofXfrmEncapTmpl  = 0x18
)
View Source 
const (
	DEFAULT_CHANGE = 0xFFFFFFFF
)
View Source 
const (
	// not defined in syscall
	IFLA_NET_NS_FD = 28
)
View Source 
const (
	XFRM_INF = ^uint64(0)
)

Infinity for packet and byte counts

Variables

This section is empty.

Functions

func BytesToString 

func BytesToString(b []byte) string

func GetIPFamily 

func GetIPFamily(ip net.IP) int

GetIPFamily returns the family type of a net.IP.

func NativeEndian 

func NativeEndian() binary.ByteOrder

Get native endianness for the system

func NonZeroTerminated 

func NonZeroTerminated(s string) []byte

func ParseRouteAttr 

func ParseRouteAttr(b []byte) ([]syscall.NetlinkRouteAttr, error)

func Swap16 

func Swap16(i uint16) uint16

Byte swap a 16 bit value if we aren't big endian

func Swap32 

func Swap32(i uint32) uint32

Byte swap a 32 bit value if aren't big endian

func Uint16Attr 

func Uint16Attr(v uint16) []byte

func Uint32Attr 

func Uint32Attr(v uint32) []byte

func Uint8Attr 

func Uint8Attr(v uint8) []byte

func ZeroTerminated 

func ZeroTerminated(s string) []byte

Types

type IfAddrmsg 

type IfAddrmsg struct {
	syscall.IfAddrmsg
}

func DeserializeIfAddrmsg 

func DeserializeIfAddrmsg(b []byte) *IfAddrmsg

func NewIfAddrmsg 

func NewIfAddrmsg(family int) *IfAddrmsg

func (*IfAddrmsg) Len 

func (msg *IfAddrmsg) Len() int

func (*IfAddrmsg) Serialize 

func (msg *IfAddrmsg) Serialize() []byte

type IfInfomsg 

type IfInfomsg struct {
	syscall.IfInfomsg
}

IfInfomsg is related to links, but it is used for list requests as well

func DeserializeIfInfomsg 

func DeserializeIfInfomsg(b []byte) *IfInfomsg

func NewIfInfomsg 

func NewIfInfomsg(family int) *IfInfomsg

Create an IfInfomsg with family specified

func NewIfInfomsgChild 

func NewIfInfomsgChild(parent *RtAttr, family int) *IfInfomsg

func (*IfInfomsg) Len 

func (msg *IfInfomsg) Len() int

func (*IfInfomsg) Serialize 

func (msg *IfInfomsg) Serialize() []byte

type NetlinkRequest 

type NetlinkRequest struct {
	syscall.NlMsghdr
	Data []NetlinkRequestData
}

func NewNetlinkRequest 

func NewNetlinkRequest(proto, flags int) *NetlinkRequest

Create a new netlink request from proto and flags Note the Len value will be inaccurate once data is added until the message is serialized

func (*NetlinkRequest) AddData 

func (msg *NetlinkRequest) AddData(data NetlinkRequestData)

func (*NetlinkRequest) Execute 

func (req *NetlinkRequest) Execute(sockType int, resType uint16) ([][]byte, error)

Execute the request against a the given sockType. Returns a list of netlink messages in seriaized format, optionally filtered by resType.

func (*NetlinkRequest) Serialize 

func (msg *NetlinkRequest) Serialize() []byte

Serialize the Netlink Request into a byte array

type NetlinkRequestData 

type NetlinkRequestData interface {
	Len() int
	Serialize() []byte
}

type NetlinkSocket 

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

func Subscribe 

func Subscribe(protocol int, groups ...uint) (*NetlinkSocket, error)

Create a netlink socket with a given protocol (e.g. NETLINK_ROUTE) and subscribe it to multicast groups passed in variable argument list. Returns the netlink socket on whic hReceive() method can be called to retrieve the messages from the kernel.

func (*NetlinkSocket) Close 

func (s *NetlinkSocket) Close()

func (*NetlinkSocket) GetPid 

func (s *NetlinkSocket) GetPid() (uint32, error)

func (*NetlinkSocket) Recieve 

func (s *NetlinkSocket) Recieve() ([]syscall.NetlinkMessage, error)

func (*NetlinkSocket) Send 

func (s *NetlinkSocket) Send(request *NetlinkRequest) error

type RtAttr 

type RtAttr struct {
	syscall.RtAttr
	Data []byte
	// contains filtered or unexported fields
}

Extend RtAttr to handle data and children

func NewRtAttr 

func NewRtAttr(attrType int, data []byte) *RtAttr

Create a new Extended RtAttr object

func NewRtAttrChild 

func NewRtAttrChild(parent *RtAttr, attrType int, data []byte) *RtAttr

Create a new RtAttr obj anc add it as a child of an existing object

func (*RtAttr) Len 

func (a *RtAttr) Len() int

func (*RtAttr) Serialize 

func (a *RtAttr) Serialize() []byte

Serialize the RtAttr into a byte array This can't ust unsafe.cast because it must iterate through children.

type RtMsg 

type RtMsg struct {
	syscall.RtMsg
}

func DeserializeRtMsg 

func DeserializeRtMsg(b []byte) *RtMsg

func NewRtMsg 

func NewRtMsg() *RtMsg

func (*RtMsg) Len 

func (msg *RtMsg) Len() int

func (*RtMsg) Serialize 

func (msg *RtMsg) Serialize() []byte

type XfrmAddress 

type XfrmAddress [SizeofXfrmAddress]byte

func DeserializeXfrmAddress 

func DeserializeXfrmAddress(b []byte) *XfrmAddress

func (*XfrmAddress) FromIP 

func (x *XfrmAddress) FromIP(ip net.IP)

func (*XfrmAddress) Serialize 

func (msg *XfrmAddress) Serialize() []byte

func (*XfrmAddress) ToIP 

func (x *XfrmAddress) ToIP() net.IP

func (*XfrmAddress) ToIPNet 

func (x *XfrmAddress) ToIPNet(prefixlen uint8) *net.IPNet

type XfrmAlgo 

type XfrmAlgo struct {
	AlgName   [64]byte
	AlgKeyLen uint32
	AlgKey    []byte
}

func DeserializeXfrmAlgo 

func DeserializeXfrmAlgo(b []byte) *XfrmAlgo

func (*XfrmAlgo) Len 

func (msg *XfrmAlgo) Len() int

func (*XfrmAlgo) Serialize 

func (msg *XfrmAlgo) Serialize() []byte

type XfrmAlgoAuth 

type XfrmAlgoAuth struct {
	AlgName     [64]byte
	AlgKeyLen   uint32
	AlgTruncLen uint32
	AlgKey      []byte
}

func DeserializeXfrmAlgoAuth 

func DeserializeXfrmAlgoAuth(b []byte) *XfrmAlgoAuth

func (*XfrmAlgoAuth) Len 

func (msg *XfrmAlgoAuth) Len() int

func (*XfrmAlgoAuth) Serialize 

func (msg *XfrmAlgoAuth) Serialize() []byte

type XfrmEncapTmpl 

type XfrmEncapTmpl struct {
	EncapType  uint16
	EncapSport uint16 // big endian
	EncapDport uint16 // big endian
	Pad        [2]byte
	EncapOa    XfrmAddress
}

func DeserializeXfrmEncapTmpl 

func DeserializeXfrmEncapTmpl(b []byte) *XfrmEncapTmpl

func (*XfrmEncapTmpl) Len 

func (msg *XfrmEncapTmpl) Len() int

func (*XfrmEncapTmpl) Serialize 

func (msg *XfrmEncapTmpl) Serialize() []byte

type XfrmId 

type XfrmId struct {
	Daddr XfrmAddress
	Spi   uint32 // big endian
	Proto uint8
	Pad   [3]byte
}

func DeserializeXfrmId 

func DeserializeXfrmId(b []byte) *XfrmId

func (*XfrmId) Len 

func (msg *XfrmId) Len() int

func (*XfrmId) Serialize 

func (msg *XfrmId) Serialize() []byte

type XfrmLifetimeCfg 

type XfrmLifetimeCfg struct {
	SoftByteLimit         uint64
	HardByteLimit         uint64
	SoftPacketLimit       uint64
	HardPacketLimit       uint64
	SoftAddExpiresSeconds uint64
	HardAddExpiresSeconds uint64
	SoftUseExpiresSeconds uint64
	HardUseExpiresSeconds uint64
}

func DeserializeXfrmLifetimeCfg 

func DeserializeXfrmLifetimeCfg(b []byte) *XfrmLifetimeCfg

func (*XfrmLifetimeCfg) Len 

func (msg *XfrmLifetimeCfg) Len() int

func (*XfrmLifetimeCfg) Serialize 

func (msg *XfrmLifetimeCfg) Serialize() []byte

type XfrmLifetimeCur 

type XfrmLifetimeCur struct {
	Bytes   uint64
	Packets uint64
	AddTime uint64
	UseTime uint64
}

func DeserializeXfrmLifetimeCur 

func DeserializeXfrmLifetimeCur(b []byte) *XfrmLifetimeCur

func (*XfrmLifetimeCur) Len 

func (msg *XfrmLifetimeCur) Len() int

func (*XfrmLifetimeCur) Serialize 

func (msg *XfrmLifetimeCur) Serialize() []byte

type XfrmSelector 

type XfrmSelector struct {
	Daddr      XfrmAddress
	Saddr      XfrmAddress
	Dport      uint16 // big endian
	DportMask  uint16 // big endian
	Sport      uint16 // big endian
	SportMask  uint16 // big endian
	Family     uint16
	PrefixlenD uint8
	PrefixlenS uint8
	Proto      uint8
	Pad        [3]byte
	Ifindex    int32
	User       uint32
}

func DeserializeXfrmSelector 

func DeserializeXfrmSelector(b []byte) *XfrmSelector

func (*XfrmSelector) Len 

func (msg *XfrmSelector) Len() int

func (*XfrmSelector) Serialize 

func (msg *XfrmSelector) Serialize() []byte

type XfrmStats 

type XfrmStats struct {
	ReplayWindow    uint32
	Replay          uint32
	IntegrityFailed uint32
}

func DeserializeXfrmStats 

func DeserializeXfrmStats(b []byte) *XfrmStats

func (*XfrmStats) Len 

func (msg *XfrmStats) Len() int

func (*XfrmStats) Serialize 

func (msg *XfrmStats) Serialize() []byte

type XfrmUserTmpl 

type XfrmUserTmpl struct {
	XfrmId   XfrmId
	Family   uint16
	Pad1     [2]byte
	Saddr    XfrmAddress
	Reqid    uint32
	Mode     uint8
	Share    uint8
	Optional uint8
	Pad2     byte
	Aalgos   uint32
	Ealgos   uint32
	Calgos   uint32
}

func DeserializeXfrmUserTmpl 

func DeserializeXfrmUserTmpl(b []byte) *XfrmUserTmpl

func (*XfrmUserTmpl) Len 

func (msg *XfrmUserTmpl) Len() int

func (*XfrmUserTmpl) Serialize 

func (msg *XfrmUserTmpl) Serialize() []byte

type XfrmUserpolicyId 

type XfrmUserpolicyId struct {
	Sel   XfrmSelector
	Index uint32
	Dir   uint8
	Pad   [3]byte
}

func DeserializeXfrmUserpolicyId 

func DeserializeXfrmUserpolicyId(b []byte) *XfrmUserpolicyId

func (*XfrmUserpolicyId) Len 

func (msg *XfrmUserpolicyId) Len() int

func (*XfrmUserpolicyId) Serialize 

func (msg *XfrmUserpolicyId) Serialize() []byte

type XfrmUserpolicyInfo 

type XfrmUserpolicyInfo struct {
	Sel      XfrmSelector
	Lft      XfrmLifetimeCfg
	Curlft   XfrmLifetimeCur
	Priority uint32
	Index    uint32
	Dir      uint8
	Action   uint8
	Flags    uint8
	Share    uint8
	Pad      [4]byte
}

func DeserializeXfrmUserpolicyInfo 

func DeserializeXfrmUserpolicyInfo(b []byte) *XfrmUserpolicyInfo

func (*XfrmUserpolicyInfo) Len 

func (msg *XfrmUserpolicyInfo) Len() int

func (*XfrmUserpolicyInfo) Serialize 

func (msg *XfrmUserpolicyInfo) Serialize() []byte

type XfrmUsersaId 

type XfrmUsersaId struct {
	Daddr  XfrmAddress
	Spi    uint32 // big endian
	Family uint16
	Proto  uint8
	Pad    byte
}

func DeserializeXfrmUsersaId 

func DeserializeXfrmUsersaId(b []byte) *XfrmUsersaId

func (*XfrmUsersaId) Len 

func (msg *XfrmUsersaId) Len() int

func (*XfrmUsersaId) Serialize 

func (msg *XfrmUsersaId) Serialize() []byte

type XfrmUsersaInfo 

type XfrmUsersaInfo struct {
	Sel          XfrmSelector
	Id           XfrmId
	Saddr        XfrmAddress
	Lft          XfrmLifetimeCfg
	Curlft       XfrmLifetimeCur
	Stats        XfrmStats
	Seq          uint32
	Reqid        uint32
	Family       uint16
	Mode         uint8
	ReplayWindow uint8
	Flags        uint8
	Pad          [7]byte
}

func DeserializeXfrmUsersaInfo 

func DeserializeXfrmUsersaInfo(b []byte) *XfrmUsersaInfo

func (*XfrmUsersaInfo) Len 

func (msg *XfrmUsersaInfo) Len() int

func (*XfrmUsersaInfo) Serialize 

func (msg *XfrmUsersaInfo) Serialize() []byte

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