netlink

package
v0.0.0-...-33bca21 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: May 7, 2015 License: Apache-2.0 Imports: 11 Imported by: 0

Documentation

Overview

Packet netlink provide access to low level Netlink sockets and messages.

Actual implementations are in: netlink_linux.go netlink_darwin.go

Index

Constants

View Source 
const (
	IFNAMSIZ          = 16
	DEFAULT_CHANGE    = 0xFFFFFFFF
	IFLA_INFO_KIND    = 1
	IFLA_INFO_DATA    = 2
	VETH_INFO_PEER    = 1
	IFLA_MACVLAN_MODE = 1
	IFLA_VLAN_ID      = 1
	IFLA_NET_NS_FD    = 28
	IFLA_ADDRESS      = 1
	SIOC_BRADDBR      = 0x89a0
	SIOC_BRDELBR      = 0x89a1
	SIOC_BRADDIF      = 0x89a2
)
View Source 
const (
	MACVLAN_MODE_PRIVATE = 1 << iota
	MACVLAN_MODE_VEPA
	MACVLAN_MODE_BRIDGE
	MACVLAN_MODE_PASSTHRU
)

Variables

View Source 
var (
	ErrWrongSockType   = errors.New("Wrong socket type")
	ErrShortResponse   = errors.New("Got short response from netlink")
	ErrInterfaceExists = errors.New("Network interface already exists")
)

Functions

func AddDefaultGw 

func AddDefaultGw(ip, device string) error

Add a new default gateway. Identical to: ip route add default via $ip

func AddRoute 

func AddRoute(destination, source, gateway, device string) error

Add a new route table entry.

func AddToBridge 

func AddToBridge(iface, master *net.Interface) error

Add a slave to abridge device. This is more backward-compatible than netlink.NetworkSetMaster and works on RHEL 6.

func ChangeName 

func ChangeName(iface *net.Interface, newName string) error

func CreateBridge 

func CreateBridge(name string, setMacAddr bool) error

Create the actual bridge device. This is more backward-compatible than netlink.NetworkLinkAdd and works on RHEL 6.

func DeleteBridge 

func DeleteBridge(name string) error

Delete the actual bridge device.

func NetworkChangeName 

func NetworkChangeName(iface *net.Interface, newName string) error

Rname a particular interface to a different name !!! Note that you can't rename an active interface. You need to bring it down before renaming it. This is identical to running: ip link set dev ${oldName} name ${newName}

func NetworkCreateVethPair 

func NetworkCreateVethPair(name1, name2 string, txQueueLen int) error

Add a new VETH pair link on the host This is identical to running: ip link add name $name type veth peer name $peername

func NetworkLinkAdd 

func NetworkLinkAdd(name string, linkType string) error

Add a new network link of a specified type. This is identical to running: ip link add $name type $linkType

func NetworkLinkAddIp 

func NetworkLinkAddIp(iface *net.Interface, ip net.IP, ipNet *net.IPNet) error

Add an Ip address to an interface. This is identical to: ip addr add $ip/$ipNet dev $iface

func NetworkLinkAddMacVlan 

func NetworkLinkAddMacVlan(masterDev, macVlanDev string, mode string) error

Add MAC VLAN network interface with masterDev as its upper device This is identical to running: ip link add name $name link $masterdev type macvlan mode $mode

func NetworkLinkAddVlan 

func NetworkLinkAddVlan(masterDev, vlanDev string, vlanId uint16) error

Add a new VLAN interface with masterDev as its upper device This is identical to running: ip link add name $name link $masterdev type vlan id $id

func NetworkLinkDel 

func NetworkLinkDel(name string) error

Delete a network link. This is identical to running: ip link del $name

func NetworkLinkDelIp 

func NetworkLinkDelIp(iface *net.Interface, ip net.IP, ipNet *net.IPNet) error

Delete an IP address from an interface. This is identical to: ip addr del $ip/$ipNet dev $iface

func NetworkLinkDown 

func NetworkLinkDown(iface *net.Interface) error

Bring down a particular network interface. This is identical to running: ip link set $name down

func NetworkLinkUp 

func NetworkLinkUp(iface *net.Interface) error

Bring up a particular network interface. This is identical to running: ip link set dev $name up

func NetworkSetMTU 

func NetworkSetMTU(iface *net.Interface, mtu int) error

Set link Maximum Transmission Unit This is identical to running: ip link set dev $name mtu $MTU bridge is a bitch here https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=292088 https://bugzilla.redhat.com/show_bug.cgi?id=697021 There is a discussion about how to deal with ifcs joining bridge with MTU > 1500 Regular network nterfaces do seem to work though!

func NetworkSetMacAddress 

func NetworkSetMacAddress(iface *net.Interface, macaddr string) error

Set link layer address ie. MAC Address. This is identical to running: ip link set dev $name address $macaddress

func NetworkSetMaster 

func NetworkSetMaster(iface, master *net.Interface) error

Add an interface to bridge. This is identical to running: ip link set $name master $master

func NetworkSetNoMaster 

func NetworkSetNoMaster(iface *net.Interface) error

Remove an interface from the bridge This is is identical to to running: ip link $name set nomaster

func NetworkSetNsFd 

func NetworkSetNsFd(iface *net.Interface, fd int) error

Move a particular network interface to a particular mounted network namespace specified by file descriptor. This is idential to running: ip link set dev $name netns $fd

func NetworkSetNsPid 

func NetworkSetNsPid(iface *net.Interface, nspid int) error

Move a particular network interface to a particular network namespace specified by PID. This is idential to running: ip link set dev $name netns $pid

func NetworkSetTxQueueLen 

func NetworkSetTxQueueLen(iface *net.Interface, txQueueLen int) error

Set link queue length This is identical to running: ip link set dev $name txqueuelen $QLEN

func SetHairpinMode 

func SetHairpinMode(iface *net.Interface, enabled bool) error

func SetMacAddress 

func SetMacAddress(name, addr string) error

Types

type IfAddr 

type IfAddr struct {
	Iface *net.Interface
	IP    net.IP
	IPNet *net.IPNet
}

An IfAddr defines IP network settings for a given network interface

type IfAddrmsg 

type IfAddrmsg struct {
	syscall.IfAddrmsg
}

func (*IfAddrmsg) Len 

func (msg *IfAddrmsg) Len() int

func (*IfAddrmsg) ToWireFormat 

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

type IfInfomsg 

type IfInfomsg struct {
	syscall.IfInfomsg
}

func (*IfInfomsg) Len 

func (msg *IfInfomsg) Len() int

func (*IfInfomsg) ToWireFormat 

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

type NetlinkRequest 

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

func (*NetlinkRequest) AddData 

func (rr *NetlinkRequest) AddData(data NetlinkRequestData)

func (*NetlinkRequest) ToWireFormat 

func (rr *NetlinkRequest) ToWireFormat() []byte

type NetlinkRequestData 

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

type NetlinkSocket 

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

func (*NetlinkSocket) CheckMessage 

func (s *NetlinkSocket) CheckMessage(m syscall.NetlinkMessage, seq, pid uint32) error

func (*NetlinkSocket) Close 

func (s *NetlinkSocket) Close()

func (*NetlinkSocket) GetPid 

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

func (*NetlinkSocket) HandleAck 

func (s *NetlinkSocket) HandleAck(seq uint32) error

func (*NetlinkSocket) Receive 

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

func (*NetlinkSocket) Send 

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

type Route 

type Route struct {
	*net.IPNet
	Iface   *net.Interface
	Default bool
}

A Route is a subnet associated with the interface to reach it.

func NetworkGetRoutes 

func NetworkGetRoutes() ([]Route, error)

Returns an array of IPNet for all the currently routed subnets on ipv4 This is similar to the first column of "ip route" output

type RtAttr 

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

func (*RtAttr) Len 

func (a *RtAttr) Len() int

func (*RtAttr) ToWireFormat 

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

type RtMsg 

type RtMsg struct {
	syscall.RtMsg
}

func (*RtMsg) Len 

func (msg *RtMsg) Len() int

func (*RtMsg) ToWireFormat 

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

Source Files

View all Source files

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