open-nomad/vendor/github.com/vishvananda/netlink/link.go

224 lines
4.0 KiB
Go

package netlink
import "net"
// Link represents a link device from netlink. Shared link attributes
// like name may be retrieved using the Attrs() method. Unique data
// can be retrieved by casting the object to the proper type.
type Link interface {
Attrs() *LinkAttrs
Type() string
}
type (
NsPid int
NsFd int
)
// LinkAttrs represents data shared by most link types
type LinkAttrs struct {
Index int
MTU int
TxQLen int // Transmit Queue Length
Name string
HardwareAddr net.HardwareAddr
Flags net.Flags
ParentIndex int // index of the parent link device
MasterIndex int // must be the index of a bridge
Namespace interface{} // nil | NsPid | NsFd
}
// NewLinkAttrs returns LinkAttrs structure filled with default values
func NewLinkAttrs() LinkAttrs {
return LinkAttrs{
TxQLen: -1,
}
}
// Device links cannot be created via netlink. These links
// are links created by udev like 'lo' and 'etho0'
type Device struct {
LinkAttrs
}
func (device *Device) Attrs() *LinkAttrs {
return &device.LinkAttrs
}
func (device *Device) Type() string {
return "device"
}
// Dummy links are dummy ethernet devices
type Dummy struct {
LinkAttrs
}
func (dummy *Dummy) Attrs() *LinkAttrs {
return &dummy.LinkAttrs
}
func (dummy *Dummy) Type() string {
return "dummy"
}
// Ifb links are advanced dummy devices for packet filtering
type Ifb struct {
LinkAttrs
}
func (ifb *Ifb) Attrs() *LinkAttrs {
return &ifb.LinkAttrs
}
func (ifb *Ifb) Type() string {
return "ifb"
}
// Bridge links are simple linux bridges
type Bridge struct {
LinkAttrs
}
func (bridge *Bridge) Attrs() *LinkAttrs {
return &bridge.LinkAttrs
}
func (bridge *Bridge) Type() string {
return "bridge"
}
// Vlan links have ParentIndex set in their Attrs()
type Vlan struct {
LinkAttrs
VlanId int
}
func (vlan *Vlan) Attrs() *LinkAttrs {
return &vlan.LinkAttrs
}
func (vlan *Vlan) Type() string {
return "vlan"
}
type MacvlanMode uint16
const (
MACVLAN_MODE_DEFAULT MacvlanMode = iota
MACVLAN_MODE_PRIVATE
MACVLAN_MODE_VEPA
MACVLAN_MODE_BRIDGE
MACVLAN_MODE_PASSTHRU
MACVLAN_MODE_SOURCE
)
// Macvlan links have ParentIndex set in their Attrs()
type Macvlan struct {
LinkAttrs
Mode MacvlanMode
}
func (macvlan *Macvlan) Attrs() *LinkAttrs {
return &macvlan.LinkAttrs
}
func (macvlan *Macvlan) Type() string {
return "macvlan"
}
// Macvtap - macvtap is a virtual interfaces based on macvlan
type Macvtap struct {
Macvlan
}
func (macvtap Macvtap) Type() string {
return "macvtap"
}
// Veth devices must specify PeerName on create
type Veth struct {
LinkAttrs
PeerName string // veth on create only
}
func (veth *Veth) Attrs() *LinkAttrs {
return &veth.LinkAttrs
}
func (veth *Veth) Type() string {
return "veth"
}
// GenericLink links represent types that are not currently understood
// by this netlink library.
type GenericLink struct {
LinkAttrs
LinkType string
}
func (generic *GenericLink) Attrs() *LinkAttrs {
return &generic.LinkAttrs
}
func (generic *GenericLink) Type() string {
return generic.LinkType
}
type Vxlan struct {
LinkAttrs
VxlanId int
VtepDevIndex int
SrcAddr net.IP
Group net.IP
TTL int
TOS int
Learning bool
Proxy bool
RSC bool
L2miss bool
L3miss bool
NoAge bool
GBP bool
Age int
Limit int
Port int
PortLow int
PortHigh int
}
func (vxlan *Vxlan) Attrs() *LinkAttrs {
return &vxlan.LinkAttrs
}
func (vxlan *Vxlan) Type() string {
return "vxlan"
}
type IPVlanMode uint16
const (
IPVLAN_MODE_L2 IPVlanMode = iota
IPVLAN_MODE_L3
IPVLAN_MODE_MAX
)
type IPVlan struct {
LinkAttrs
Mode IPVlanMode
}
func (ipvlan *IPVlan) Attrs() *LinkAttrs {
return &ipvlan.LinkAttrs
}
func (ipvlan *IPVlan) Type() string {
return "ipvlan"
}
// iproute2 supported devices;
// vlan | veth | vcan | dummy | ifb | macvlan | macvtap |
// bridge | bond | ipoib | ip6tnl | ipip | sit | vxlan |
// gre | gretap | ip6gre | ip6gretap | vti | nlmon |
// bond_slave | ipvlan