mirror of https://github.com/vishvananda/netlink
1643 lines
47 KiB
Go
1643 lines
47 KiB
Go
package netlink
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"net"
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"os"
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"syscall"
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"unsafe"
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"github.com/vishvananda/netlink/nl"
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"github.com/vishvananda/netns"
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)
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const (
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SizeofLinkStats32 = 0x5c
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SizeofLinkStats64 = 0xd8
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IFLA_STATS64 = 0x17 // syscall pkg does not contain this one
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)
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const (
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TUNTAP_MODE_TUN TuntapMode = syscall.IFF_TUN
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TUNTAP_MODE_TAP TuntapMode = syscall.IFF_TAP
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TUNTAP_DEFAULTS TuntapFlag = syscall.IFF_TUN_EXCL | syscall.IFF_ONE_QUEUE
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TUNTAP_VNET_HDR TuntapFlag = syscall.IFF_VNET_HDR
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TUNTAP_TUN_EXCL TuntapFlag = syscall.IFF_TUN_EXCL
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TUNTAP_NO_PI TuntapFlag = syscall.IFF_NO_PI
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TUNTAP_ONE_QUEUE TuntapFlag = syscall.IFF_ONE_QUEUE
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)
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var lookupByDump = false
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var macvlanModes = [...]uint32{
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0,
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nl.MACVLAN_MODE_PRIVATE,
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nl.MACVLAN_MODE_VEPA,
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nl.MACVLAN_MODE_BRIDGE,
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nl.MACVLAN_MODE_PASSTHRU,
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nl.MACVLAN_MODE_SOURCE,
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}
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func ensureIndex(link *LinkAttrs) {
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if link != nil && link.Index == 0 {
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newlink, _ := LinkByName(link.Name)
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if newlink != nil {
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link.Index = newlink.Attrs().Index
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}
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}
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}
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func (h *Handle) ensureIndex(link *LinkAttrs) {
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if link != nil && link.Index == 0 {
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newlink, _ := h.LinkByName(link.Name)
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if newlink != nil {
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link.Index = newlink.Attrs().Index
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}
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}
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}
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func (h *Handle) SetPromiscOn(link Link) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Change = syscall.IFF_PROMISC
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msg.Flags = syscall.IFF_UP
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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func SetPromiscOn(link Link) error {
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return pkgHandle.SetPromiscOn(link)
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}
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func (h *Handle) SetPromiscOff(link Link) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Change = syscall.IFF_PROMISC
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msg.Flags = 0 & ^syscall.IFF_UP
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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func SetPromiscOff(link Link) error {
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return pkgHandle.SetPromiscOff(link)
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}
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// LinkSetUp enables the link device.
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// Equivalent to: `ip link set $link up`
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func LinkSetUp(link Link) error {
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return pkgHandle.LinkSetUp(link)
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}
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// LinkSetUp enables the link device.
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// Equivalent to: `ip link set $link up`
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func (h *Handle) LinkSetUp(link Link) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_NEWLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Change = syscall.IFF_UP
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msg.Flags = syscall.IFF_UP
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetDown disables link device.
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// Equivalent to: `ip link set $link down`
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func LinkSetDown(link Link) error {
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return pkgHandle.LinkSetDown(link)
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}
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// LinkSetDown disables link device.
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// Equivalent to: `ip link set $link down`
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func (h *Handle) LinkSetDown(link Link) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_NEWLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Change = syscall.IFF_UP
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msg.Flags = 0 & ^syscall.IFF_UP
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetMTU sets the mtu of the link device.
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// Equivalent to: `ip link set $link mtu $mtu`
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func LinkSetMTU(link Link, mtu int) error {
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return pkgHandle.LinkSetMTU(link, mtu)
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}
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// LinkSetMTU sets the mtu of the link device.
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// Equivalent to: `ip link set $link mtu $mtu`
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func (h *Handle) LinkSetMTU(link Link, mtu int) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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b := make([]byte, 4)
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native.PutUint32(b, uint32(mtu))
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data := nl.NewRtAttr(syscall.IFLA_MTU, b)
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req.AddData(data)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetName sets the name of the link device.
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// Equivalent to: `ip link set $link name $name`
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func LinkSetName(link Link, name string) error {
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return pkgHandle.LinkSetName(link, name)
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}
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// LinkSetName sets the name of the link device.
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// Equivalent to: `ip link set $link name $name`
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func (h *Handle) LinkSetName(link Link, name string) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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data := nl.NewRtAttr(syscall.IFLA_IFNAME, []byte(name))
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req.AddData(data)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetAlias sets the alias of the link device.
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// Equivalent to: `ip link set dev $link alias $name`
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func LinkSetAlias(link Link, name string) error {
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return pkgHandle.LinkSetAlias(link, name)
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}
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// LinkSetAlias sets the alias of the link device.
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// Equivalent to: `ip link set dev $link alias $name`
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func (h *Handle) LinkSetAlias(link Link, name string) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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data := nl.NewRtAttr(syscall.IFLA_IFALIAS, []byte(name))
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req.AddData(data)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetHardwareAddr sets the hardware address of the link device.
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// Equivalent to: `ip link set $link address $hwaddr`
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func LinkSetHardwareAddr(link Link, hwaddr net.HardwareAddr) error {
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return pkgHandle.LinkSetHardwareAddr(link, hwaddr)
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}
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// LinkSetHardwareAddr sets the hardware address of the link device.
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// Equivalent to: `ip link set $link address $hwaddr`
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func (h *Handle) LinkSetHardwareAddr(link Link, hwaddr net.HardwareAddr) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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data := nl.NewRtAttr(syscall.IFLA_ADDRESS, []byte(hwaddr))
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req.AddData(data)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetVfHardwareAddr sets the hardware address of a vf for the link.
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// Equivalent to: `ip link set $link vf $vf mac $hwaddr`
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func LinkSetVfHardwareAddr(link Link, vf int, hwaddr net.HardwareAddr) error {
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return pkgHandle.LinkSetVfHardwareAddr(link, vf, hwaddr)
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}
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// LinkSetVfHardwareAddr sets the hardware address of a vf for the link.
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// Equivalent to: `ip link set $link vf $vf mac $hwaddr`
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func (h *Handle) LinkSetVfHardwareAddr(link Link, vf int, hwaddr net.HardwareAddr) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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data := nl.NewRtAttr(nl.IFLA_VFINFO_LIST, nil)
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info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil)
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vfmsg := nl.VfMac{
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Vf: uint32(vf),
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}
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copy(vfmsg.Mac[:], []byte(hwaddr))
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nl.NewRtAttrChild(info, nl.IFLA_VF_MAC, vfmsg.Serialize())
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req.AddData(data)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetVfVlan sets the vlan of a vf for the link.
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// Equivalent to: `ip link set $link vf $vf vlan $vlan`
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func LinkSetVfVlan(link Link, vf, vlan int) error {
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return pkgHandle.LinkSetVfVlan(link, vf, vlan)
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}
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// LinkSetVfVlan sets the vlan of a vf for the link.
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// Equivalent to: `ip link set $link vf $vf vlan $vlan`
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func (h *Handle) LinkSetVfVlan(link Link, vf, vlan int) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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data := nl.NewRtAttr(nl.IFLA_VFINFO_LIST, nil)
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info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil)
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vfmsg := nl.VfVlan{
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Vf: uint32(vf),
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Vlan: uint32(vlan),
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}
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nl.NewRtAttrChild(info, nl.IFLA_VF_VLAN, vfmsg.Serialize())
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req.AddData(data)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetVfTxRate sets the tx rate of a vf for the link.
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// Equivalent to: `ip link set $link vf $vf rate $rate`
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func LinkSetVfTxRate(link Link, vf, rate int) error {
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return pkgHandle.LinkSetVfTxRate(link, vf, rate)
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}
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// LinkSetVfTxRate sets the tx rate of a vf for the link.
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// Equivalent to: `ip link set $link vf $vf rate $rate`
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func (h *Handle) LinkSetVfTxRate(link Link, vf, rate int) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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data := nl.NewRtAttr(nl.IFLA_VFINFO_LIST, nil)
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info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil)
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vfmsg := nl.VfTxRate{
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Vf: uint32(vf),
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Rate: uint32(rate),
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}
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nl.NewRtAttrChild(info, nl.IFLA_VF_TX_RATE, vfmsg.Serialize())
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req.AddData(data)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetMaster sets the master of the link device.
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// Equivalent to: `ip link set $link master $master`
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func LinkSetMaster(link Link, master *Bridge) error {
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return pkgHandle.LinkSetMaster(link, master)
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}
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// LinkSetMaster sets the master of the link device.
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// Equivalent to: `ip link set $link master $master`
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func (h *Handle) LinkSetMaster(link Link, master *Bridge) error {
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index := 0
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if master != nil {
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masterBase := master.Attrs()
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h.ensureIndex(masterBase)
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index = masterBase.Index
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}
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if index <= 0 {
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return fmt.Errorf("Device does not exist")
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}
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return h.LinkSetMasterByIndex(link, index)
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}
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// LinkSetNoMaster removes the master of the link device.
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// Equivalent to: `ip link set $link nomaster`
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func LinkSetNoMaster(link Link) error {
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return pkgHandle.LinkSetNoMaster(link)
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}
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// LinkSetNoMaster removes the master of the link device.
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// Equivalent to: `ip link set $link nomaster`
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func (h *Handle) LinkSetNoMaster(link Link) error {
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return h.LinkSetMasterByIndex(link, 0)
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}
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// LinkSetMasterByIndex sets the master of the link device.
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// Equivalent to: `ip link set $link master $master`
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func LinkSetMasterByIndex(link Link, masterIndex int) error {
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return pkgHandle.LinkSetMasterByIndex(link, masterIndex)
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}
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// LinkSetMasterByIndex sets the master of the link device.
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// Equivalent to: `ip link set $link master $master`
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func (h *Handle) LinkSetMasterByIndex(link Link, masterIndex int) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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b := make([]byte, 4)
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native.PutUint32(b, uint32(masterIndex))
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data := nl.NewRtAttr(syscall.IFLA_MASTER, b)
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req.AddData(data)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetNsPid puts the device into a new network namespace. The
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// pid must be a pid of a running process.
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// Equivalent to: `ip link set $link netns $pid`
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func LinkSetNsPid(link Link, nspid int) error {
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return pkgHandle.LinkSetNsPid(link, nspid)
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}
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// LinkSetNsPid puts the device into a new network namespace. The
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// pid must be a pid of a running process.
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// Equivalent to: `ip link set $link netns $pid`
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func (h *Handle) LinkSetNsPid(link Link, nspid int) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
|
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|
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
|
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msg.Index = int32(base.Index)
|
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req.AddData(msg)
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|
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b := make([]byte, 4)
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native.PutUint32(b, uint32(nspid))
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|
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data := nl.NewRtAttr(syscall.IFLA_NET_NS_PID, b)
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req.AddData(data)
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|
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
|
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return err
|
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}
|
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|
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// LinkSetNsFd puts the device into a new network namespace. The
|
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// fd must be an open file descriptor to a network namespace.
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// Similar to: `ip link set $link netns $ns`
|
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func LinkSetNsFd(link Link, fd int) error {
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return pkgHandle.LinkSetNsFd(link, fd)
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}
|
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|
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// LinkSetNsFd puts the device into a new network namespace. The
|
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// fd must be an open file descriptor to a network namespace.
|
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// Similar to: `ip link set $link netns $ns`
|
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func (h *Handle) LinkSetNsFd(link Link, fd int) error {
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base := link.Attrs()
|
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h.ensureIndex(base)
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req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
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|
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
|
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msg.Index = int32(base.Index)
|
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req.AddData(msg)
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|
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b := make([]byte, 4)
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native.PutUint32(b, uint32(fd))
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|
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data := nl.NewRtAttr(nl.IFLA_NET_NS_FD, b)
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req.AddData(data)
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
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return err
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}
|
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|
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// LinkSetXdpFd adds a bpf function to the driver. The fd must be a bpf
|
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// program loaded with bpf(type=BPF_PROG_TYPE_XDP)
|
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func LinkSetXdpFd(link Link, fd int) error {
|
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base := link.Attrs()
|
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ensureIndex(base)
|
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req := nl.NewNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
|
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|
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msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
|
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msg.Index = int32(base.Index)
|
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req.AddData(msg)
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|
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addXdpAttrs(&LinkXdp{Fd: fd}, req)
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|
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_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
|
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return err
|
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}
|
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|
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func boolAttr(val bool) []byte {
|
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var v uint8
|
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if val {
|
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v = 1
|
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}
|
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return nl.Uint8Attr(v)
|
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}
|
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|
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type vxlanPortRange struct {
|
|
Lo, Hi uint16
|
|
}
|
|
|
|
func addVxlanAttrs(vxlan *Vxlan, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_ID, nl.Uint32Attr(uint32(vxlan.VxlanId)))
|
|
if vxlan.VtepDevIndex != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_LINK, nl.Uint32Attr(uint32(vxlan.VtepDevIndex)))
|
|
}
|
|
if vxlan.SrcAddr != nil {
|
|
ip := vxlan.SrcAddr.To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_LOCAL, []byte(ip))
|
|
} else {
|
|
ip = vxlan.SrcAddr.To16()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_LOCAL6, []byte(ip))
|
|
}
|
|
}
|
|
}
|
|
if vxlan.Group != nil {
|
|
group := vxlan.Group.To4()
|
|
if group != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_GROUP, []byte(group))
|
|
} else {
|
|
group = vxlan.Group.To16()
|
|
if group != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_GROUP6, []byte(group))
|
|
}
|
|
}
|
|
}
|
|
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_TTL, nl.Uint8Attr(uint8(vxlan.TTL)))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_TOS, nl.Uint8Attr(uint8(vxlan.TOS)))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_LEARNING, boolAttr(vxlan.Learning))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_PROXY, boolAttr(vxlan.Proxy))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_RSC, boolAttr(vxlan.RSC))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_L2MISS, boolAttr(vxlan.L2miss))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_L3MISS, boolAttr(vxlan.L3miss))
|
|
|
|
if vxlan.UDPCSum {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_UDP_CSUM, boolAttr(vxlan.UDPCSum))
|
|
}
|
|
if vxlan.GBP {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_GBP, []byte{})
|
|
}
|
|
if vxlan.NoAge {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_AGEING, nl.Uint32Attr(0))
|
|
} else if vxlan.Age > 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_AGEING, nl.Uint32Attr(uint32(vxlan.Age)))
|
|
}
|
|
if vxlan.Limit > 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_LIMIT, nl.Uint32Attr(uint32(vxlan.Limit)))
|
|
}
|
|
if vxlan.Port > 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_PORT, htons(uint16(vxlan.Port)))
|
|
}
|
|
if vxlan.PortLow > 0 || vxlan.PortHigh > 0 {
|
|
pr := vxlanPortRange{uint16(vxlan.PortLow), uint16(vxlan.PortHigh)}
|
|
|
|
buf := new(bytes.Buffer)
|
|
binary.Write(buf, binary.BigEndian, &pr)
|
|
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_PORT_RANGE, buf.Bytes())
|
|
}
|
|
}
|
|
|
|
func addBondAttrs(bond *Bond, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
if bond.Mode >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_MODE, nl.Uint8Attr(uint8(bond.Mode)))
|
|
}
|
|
if bond.ActiveSlave >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_ACTIVE_SLAVE, nl.Uint32Attr(uint32(bond.ActiveSlave)))
|
|
}
|
|
if bond.Miimon >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_MIIMON, nl.Uint32Attr(uint32(bond.Miimon)))
|
|
}
|
|
if bond.UpDelay >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_UPDELAY, nl.Uint32Attr(uint32(bond.UpDelay)))
|
|
}
|
|
if bond.DownDelay >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_DOWNDELAY, nl.Uint32Attr(uint32(bond.DownDelay)))
|
|
}
|
|
if bond.UseCarrier >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_USE_CARRIER, nl.Uint8Attr(uint8(bond.UseCarrier)))
|
|
}
|
|
if bond.ArpInterval >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_ARP_INTERVAL, nl.Uint32Attr(uint32(bond.ArpInterval)))
|
|
}
|
|
if bond.ArpIpTargets != nil {
|
|
msg := nl.NewRtAttrChild(data, nl.IFLA_BOND_ARP_IP_TARGET, nil)
|
|
for i := range bond.ArpIpTargets {
|
|
ip := bond.ArpIpTargets[i].To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(msg, i, []byte(ip))
|
|
continue
|
|
}
|
|
ip = bond.ArpIpTargets[i].To16()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(msg, i, []byte(ip))
|
|
}
|
|
}
|
|
}
|
|
if bond.ArpValidate >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_ARP_VALIDATE, nl.Uint32Attr(uint32(bond.ArpValidate)))
|
|
}
|
|
if bond.ArpAllTargets >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_ARP_ALL_TARGETS, nl.Uint32Attr(uint32(bond.ArpAllTargets)))
|
|
}
|
|
if bond.Primary >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_PRIMARY, nl.Uint32Attr(uint32(bond.Primary)))
|
|
}
|
|
if bond.PrimaryReselect >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_PRIMARY_RESELECT, nl.Uint8Attr(uint8(bond.PrimaryReselect)))
|
|
}
|
|
if bond.FailOverMac >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_FAIL_OVER_MAC, nl.Uint8Attr(uint8(bond.FailOverMac)))
|
|
}
|
|
if bond.XmitHashPolicy >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_XMIT_HASH_POLICY, nl.Uint8Attr(uint8(bond.XmitHashPolicy)))
|
|
}
|
|
if bond.ResendIgmp >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_RESEND_IGMP, nl.Uint32Attr(uint32(bond.ResendIgmp)))
|
|
}
|
|
if bond.NumPeerNotif >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_NUM_PEER_NOTIF, nl.Uint8Attr(uint8(bond.NumPeerNotif)))
|
|
}
|
|
if bond.AllSlavesActive >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_ALL_SLAVES_ACTIVE, nl.Uint8Attr(uint8(bond.AllSlavesActive)))
|
|
}
|
|
if bond.MinLinks >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_MIN_LINKS, nl.Uint32Attr(uint32(bond.MinLinks)))
|
|
}
|
|
if bond.LpInterval >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_LP_INTERVAL, nl.Uint32Attr(uint32(bond.LpInterval)))
|
|
}
|
|
if bond.PackersPerSlave >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_PACKETS_PER_SLAVE, nl.Uint32Attr(uint32(bond.PackersPerSlave)))
|
|
}
|
|
if bond.LacpRate >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_AD_LACP_RATE, nl.Uint8Attr(uint8(bond.LacpRate)))
|
|
}
|
|
if bond.AdSelect >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_AD_SELECT, nl.Uint8Attr(uint8(bond.AdSelect)))
|
|
}
|
|
}
|
|
|
|
// LinkAdd adds a new link device. The type and features of the device
|
|
// are taken from the parameters in the link object.
|
|
// Equivalent to: `ip link add $link`
|
|
func LinkAdd(link Link) error {
|
|
return pkgHandle.LinkAdd(link)
|
|
}
|
|
|
|
// LinkAdd adds a new link device. The type and features of the device
|
|
// are taken fromt the parameters in the link object.
|
|
// Equivalent to: `ip link add $link`
|
|
func (h *Handle) LinkAdd(link Link) error {
|
|
// TODO: set mtu and hardware address
|
|
// TODO: support extra data for macvlan
|
|
base := link.Attrs()
|
|
|
|
if base.Name == "" {
|
|
return fmt.Errorf("LinkAttrs.Name cannot be empty!")
|
|
}
|
|
|
|
if tuntap, ok := link.(*Tuntap); ok {
|
|
// TODO: support user
|
|
// TODO: support group
|
|
// TODO: multi_queue
|
|
// TODO: support non- persistent
|
|
if tuntap.Mode < syscall.IFF_TUN || tuntap.Mode > syscall.IFF_TAP {
|
|
return fmt.Errorf("Tuntap.Mode %v unknown!", tuntap.Mode)
|
|
}
|
|
file, err := os.OpenFile("/dev/net/tun", os.O_RDWR, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer file.Close()
|
|
var req ifReq
|
|
if tuntap.Flags == 0 {
|
|
req.Flags = uint16(TUNTAP_DEFAULTS)
|
|
} else {
|
|
req.Flags = uint16(tuntap.Flags)
|
|
}
|
|
req.Flags |= uint16(tuntap.Mode)
|
|
copy(req.Name[:15], base.Name)
|
|
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, file.Fd(), uintptr(syscall.TUNSETIFF), uintptr(unsafe.Pointer(&req)))
|
|
if errno != 0 {
|
|
return fmt.Errorf("Tuntap IOCTL TUNSETIFF failed, errno %v", errno)
|
|
}
|
|
_, _, errno = syscall.Syscall(syscall.SYS_IOCTL, file.Fd(), uintptr(syscall.TUNSETPERSIST), 1)
|
|
if errno != 0 {
|
|
return fmt.Errorf("Tuntap IOCTL TUNSETPERSIST failed, errno %v", errno)
|
|
}
|
|
h.ensureIndex(base)
|
|
|
|
// can't set master during create, so set it afterwards
|
|
if base.MasterIndex != 0 {
|
|
// TODO: verify MasterIndex is actually a bridge?
|
|
return h.LinkSetMasterByIndex(link, base.MasterIndex)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
req := h.newNetlinkRequest(syscall.RTM_NEWLINK, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
|
|
// TODO: make it shorter
|
|
if base.Flags&net.FlagUp != 0 {
|
|
msg.Change = syscall.IFF_UP
|
|
msg.Flags = syscall.IFF_UP
|
|
}
|
|
if base.Flags&net.FlagBroadcast != 0 {
|
|
msg.Change |= syscall.IFF_BROADCAST
|
|
msg.Flags |= syscall.IFF_BROADCAST
|
|
}
|
|
if base.Flags&net.FlagLoopback != 0 {
|
|
msg.Change |= syscall.IFF_LOOPBACK
|
|
msg.Flags |= syscall.IFF_LOOPBACK
|
|
}
|
|
if base.Flags&net.FlagPointToPoint != 0 {
|
|
msg.Change |= syscall.IFF_POINTOPOINT
|
|
msg.Flags |= syscall.IFF_POINTOPOINT
|
|
}
|
|
if base.Flags&net.FlagMulticast != 0 {
|
|
msg.Change |= syscall.IFF_MULTICAST
|
|
msg.Flags |= syscall.IFF_MULTICAST
|
|
}
|
|
req.AddData(msg)
|
|
|
|
if base.ParentIndex != 0 {
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, uint32(base.ParentIndex))
|
|
data := nl.NewRtAttr(syscall.IFLA_LINK, b)
|
|
req.AddData(data)
|
|
} else if link.Type() == "ipvlan" {
|
|
return fmt.Errorf("Can't create ipvlan link without ParentIndex")
|
|
}
|
|
|
|
nameData := nl.NewRtAttr(syscall.IFLA_IFNAME, nl.ZeroTerminated(base.Name))
|
|
req.AddData(nameData)
|
|
|
|
if base.MTU > 0 {
|
|
mtu := nl.NewRtAttr(syscall.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU)))
|
|
req.AddData(mtu)
|
|
}
|
|
|
|
if base.TxQLen >= 0 {
|
|
qlen := nl.NewRtAttr(syscall.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen)))
|
|
req.AddData(qlen)
|
|
}
|
|
|
|
if base.Namespace != nil {
|
|
var attr *nl.RtAttr
|
|
switch base.Namespace.(type) {
|
|
case NsPid:
|
|
val := nl.Uint32Attr(uint32(base.Namespace.(NsPid)))
|
|
attr = nl.NewRtAttr(syscall.IFLA_NET_NS_PID, val)
|
|
case NsFd:
|
|
val := nl.Uint32Attr(uint32(base.Namespace.(NsFd)))
|
|
attr = nl.NewRtAttr(nl.IFLA_NET_NS_FD, val)
|
|
}
|
|
|
|
req.AddData(attr)
|
|
}
|
|
|
|
if base.Xdp != nil {
|
|
addXdpAttrs(base.Xdp, req)
|
|
}
|
|
|
|
linkInfo := nl.NewRtAttr(syscall.IFLA_LINKINFO, nil)
|
|
nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_KIND, nl.NonZeroTerminated(link.Type()))
|
|
|
|
if vlan, ok := link.(*Vlan); ok {
|
|
b := make([]byte, 2)
|
|
native.PutUint16(b, uint16(vlan.VlanId))
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_VLAN_ID, b)
|
|
} else if veth, ok := link.(*Veth); ok {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
peer := nl.NewRtAttrChild(data, nl.VETH_INFO_PEER, nil)
|
|
nl.NewIfInfomsgChild(peer, syscall.AF_UNSPEC)
|
|
nl.NewRtAttrChild(peer, syscall.IFLA_IFNAME, nl.ZeroTerminated(veth.PeerName))
|
|
if base.TxQLen >= 0 {
|
|
nl.NewRtAttrChild(peer, syscall.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen)))
|
|
}
|
|
if base.MTU > 0 {
|
|
nl.NewRtAttrChild(peer, syscall.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU)))
|
|
}
|
|
|
|
} else if vxlan, ok := link.(*Vxlan); ok {
|
|
addVxlanAttrs(vxlan, linkInfo)
|
|
} else if bond, ok := link.(*Bond); ok {
|
|
addBondAttrs(bond, linkInfo)
|
|
} else if ipv, ok := link.(*IPVlan); ok {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPVLAN_MODE, nl.Uint16Attr(uint16(ipv.Mode)))
|
|
} else if macv, ok := link.(*Macvlan); ok {
|
|
if macv.Mode != MACVLAN_MODE_DEFAULT {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[macv.Mode]))
|
|
}
|
|
} else if macv, ok := link.(*Macvtap); ok {
|
|
if macv.Mode != MACVLAN_MODE_DEFAULT {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[macv.Mode]))
|
|
}
|
|
} else if gretap, ok := link.(*Gretap); ok {
|
|
addGretapAttrs(gretap, linkInfo)
|
|
} else if iptun, ok := link.(*Iptun); ok {
|
|
addIptunAttrs(iptun, linkInfo)
|
|
} else if vti, ok := link.(*Vti); ok {
|
|
addVtiAttrs(vti, linkInfo)
|
|
} else if vrf, ok := link.(*Vrf); ok {
|
|
addVrfAttrs(vrf, linkInfo)
|
|
}
|
|
|
|
req.AddData(linkInfo)
|
|
|
|
_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
h.ensureIndex(base)
|
|
|
|
// can't set master during create, so set it afterwards
|
|
if base.MasterIndex != 0 {
|
|
// TODO: verify MasterIndex is actually a bridge?
|
|
return h.LinkSetMasterByIndex(link, base.MasterIndex)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// LinkDel deletes link device. Either Index or Name must be set in
|
|
// the link object for it to be deleted. The other values are ignored.
|
|
// Equivalent to: `ip link del $link`
|
|
func LinkDel(link Link) error {
|
|
return pkgHandle.LinkDel(link)
|
|
}
|
|
|
|
// LinkDel deletes link device. Either Index or Name must be set in
|
|
// the link object for it to be deleted. The other values are ignored.
|
|
// Equivalent to: `ip link del $link`
|
|
func (h *Handle) LinkDel(link Link) error {
|
|
base := link.Attrs()
|
|
|
|
h.ensureIndex(base)
|
|
|
|
req := h.newNetlinkRequest(syscall.RTM_DELLINK, syscall.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
func (h *Handle) linkByNameDump(name string) (Link, error) {
|
|
links, err := h.LinkList()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for _, link := range links {
|
|
if link.Attrs().Name == name {
|
|
return link, nil
|
|
}
|
|
}
|
|
return nil, fmt.Errorf("Link %s not found", name)
|
|
}
|
|
|
|
func (h *Handle) linkByAliasDump(alias string) (Link, error) {
|
|
links, err := h.LinkList()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for _, link := range links {
|
|
if link.Attrs().Alias == alias {
|
|
return link, nil
|
|
}
|
|
}
|
|
return nil, fmt.Errorf("Link alias %s not found", alias)
|
|
}
|
|
|
|
// LinkByName finds a link by name and returns a pointer to the object.
|
|
func LinkByName(name string) (Link, error) {
|
|
return pkgHandle.LinkByName(name)
|
|
}
|
|
|
|
// LinkByName finds a link by name and returns a pointer to the object.
|
|
func (h *Handle) LinkByName(name string) (Link, error) {
|
|
if h.lookupByDump {
|
|
return h.linkByNameDump(name)
|
|
}
|
|
|
|
req := h.newNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
|
|
req.AddData(msg)
|
|
|
|
nameData := nl.NewRtAttr(syscall.IFLA_IFNAME, nl.ZeroTerminated(name))
|
|
req.AddData(nameData)
|
|
|
|
link, err := execGetLink(req)
|
|
if err == syscall.EINVAL {
|
|
// older kernels don't support looking up via IFLA_IFNAME
|
|
// so fall back to dumping all links
|
|
h.lookupByDump = true
|
|
return h.linkByNameDump(name)
|
|
}
|
|
|
|
return link, err
|
|
}
|
|
|
|
// LinkByAlias finds a link by its alias and returns a pointer to the object.
|
|
// If there are multiple links with the alias it returns the first one
|
|
func LinkByAlias(alias string) (Link, error) {
|
|
return pkgHandle.LinkByAlias(alias)
|
|
}
|
|
|
|
// LinkByAlias finds a link by its alias and returns a pointer to the object.
|
|
// If there are multiple links with the alias it returns the first one
|
|
func (h *Handle) LinkByAlias(alias string) (Link, error) {
|
|
if h.lookupByDump {
|
|
return h.linkByAliasDump(alias)
|
|
}
|
|
|
|
req := h.newNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
|
|
req.AddData(msg)
|
|
|
|
nameData := nl.NewRtAttr(syscall.IFLA_IFALIAS, nl.ZeroTerminated(alias))
|
|
req.AddData(nameData)
|
|
|
|
link, err := execGetLink(req)
|
|
if err == syscall.EINVAL {
|
|
// older kernels don't support looking up via IFLA_IFALIAS
|
|
// so fall back to dumping all links
|
|
h.lookupByDump = true
|
|
return h.linkByAliasDump(alias)
|
|
}
|
|
|
|
return link, err
|
|
}
|
|
|
|
// LinkByIndex finds a link by index and returns a pointer to the object.
|
|
func LinkByIndex(index int) (Link, error) {
|
|
return pkgHandle.LinkByIndex(index)
|
|
}
|
|
|
|
// LinkByIndex finds a link by index and returns a pointer to the object.
|
|
func (h *Handle) LinkByIndex(index int) (Link, error) {
|
|
req := h.newNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
|
|
msg.Index = int32(index)
|
|
req.AddData(msg)
|
|
|
|
return execGetLink(req)
|
|
}
|
|
|
|
func execGetLink(req *nl.NetlinkRequest) (Link, error) {
|
|
msgs, err := req.Execute(syscall.NETLINK_ROUTE, 0)
|
|
if err != nil {
|
|
if errno, ok := err.(syscall.Errno); ok {
|
|
if errno == syscall.ENODEV {
|
|
return nil, fmt.Errorf("Link not found")
|
|
}
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
switch {
|
|
case len(msgs) == 0:
|
|
return nil, fmt.Errorf("Link not found")
|
|
|
|
case len(msgs) == 1:
|
|
return LinkDeserialize(nil, msgs[0])
|
|
|
|
default:
|
|
return nil, fmt.Errorf("More than one link found")
|
|
}
|
|
}
|
|
|
|
// linkDeserialize deserializes a raw message received from netlink into
|
|
// a link object.
|
|
func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) {
|
|
msg := nl.DeserializeIfInfomsg(m)
|
|
|
|
attrs, err := nl.ParseRouteAttr(m[msg.Len():])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
base := LinkAttrs{Index: int(msg.Index), RawFlags: msg.Flags, Flags: linkFlags(msg.Flags), EncapType: msg.EncapType()}
|
|
if msg.Flags&syscall.IFF_PROMISC != 0 {
|
|
base.Promisc = 1
|
|
}
|
|
var (
|
|
link Link
|
|
stats32 []byte
|
|
stats64 []byte
|
|
linkType string
|
|
)
|
|
for _, attr := range attrs {
|
|
switch attr.Attr.Type {
|
|
case syscall.IFLA_LINKINFO:
|
|
infos, err := nl.ParseRouteAttr(attr.Value)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, info := range infos {
|
|
switch info.Attr.Type {
|
|
case nl.IFLA_INFO_KIND:
|
|
linkType = string(info.Value[:len(info.Value)-1])
|
|
switch linkType {
|
|
case "dummy":
|
|
link = &Dummy{}
|
|
case "ifb":
|
|
link = &Ifb{}
|
|
case "bridge":
|
|
link = &Bridge{}
|
|
case "vlan":
|
|
link = &Vlan{}
|
|
case "veth":
|
|
link = &Veth{}
|
|
case "vxlan":
|
|
link = &Vxlan{}
|
|
case "bond":
|
|
link = &Bond{}
|
|
case "ipvlan":
|
|
link = &IPVlan{}
|
|
case "macvlan":
|
|
link = &Macvlan{}
|
|
case "macvtap":
|
|
link = &Macvtap{}
|
|
case "gretap":
|
|
link = &Gretap{}
|
|
case "ipip":
|
|
link = &Iptun{}
|
|
case "vti":
|
|
link = &Vti{}
|
|
case "vrf":
|
|
link = &Vrf{}
|
|
default:
|
|
link = &GenericLink{LinkType: linkType}
|
|
}
|
|
case nl.IFLA_INFO_DATA:
|
|
data, err := nl.ParseRouteAttr(info.Value)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
switch linkType {
|
|
case "vlan":
|
|
parseVlanData(link, data)
|
|
case "vxlan":
|
|
parseVxlanData(link, data)
|
|
case "bond":
|
|
parseBondData(link, data)
|
|
case "ipvlan":
|
|
parseIPVlanData(link, data)
|
|
case "macvlan":
|
|
parseMacvlanData(link, data)
|
|
case "macvtap":
|
|
parseMacvtapData(link, data)
|
|
case "gretap":
|
|
parseGretapData(link, data)
|
|
case "ipip":
|
|
parseIptunData(link, data)
|
|
case "vti":
|
|
parseVtiData(link, data)
|
|
case "vrf":
|
|
parseVrfData(link, data)
|
|
}
|
|
}
|
|
}
|
|
case syscall.IFLA_ADDRESS:
|
|
var nonzero bool
|
|
for _, b := range attr.Value {
|
|
if b != 0 {
|
|
nonzero = true
|
|
}
|
|
}
|
|
if nonzero {
|
|
base.HardwareAddr = attr.Value[:]
|
|
}
|
|
case syscall.IFLA_IFNAME:
|
|
base.Name = string(attr.Value[:len(attr.Value)-1])
|
|
case syscall.IFLA_MTU:
|
|
base.MTU = int(native.Uint32(attr.Value[0:4]))
|
|
case syscall.IFLA_LINK:
|
|
base.ParentIndex = int(native.Uint32(attr.Value[0:4]))
|
|
case syscall.IFLA_MASTER:
|
|
base.MasterIndex = int(native.Uint32(attr.Value[0:4]))
|
|
case syscall.IFLA_TXQLEN:
|
|
base.TxQLen = int(native.Uint32(attr.Value[0:4]))
|
|
case syscall.IFLA_IFALIAS:
|
|
base.Alias = string(attr.Value[:len(attr.Value)-1])
|
|
case syscall.IFLA_STATS:
|
|
stats32 = attr.Value[:]
|
|
case IFLA_STATS64:
|
|
stats64 = attr.Value[:]
|
|
case nl.IFLA_XDP:
|
|
xdp, err := parseLinkXdp(attr.Value[:])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
base.Xdp = xdp
|
|
case syscall.IFLA_PROTINFO | syscall.NLA_F_NESTED:
|
|
if hdr != nil && hdr.Type == syscall.RTM_NEWLINK &&
|
|
msg.Family == syscall.AF_BRIDGE {
|
|
attrs, err := nl.ParseRouteAttr(attr.Value[:])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
base.Protinfo = parseProtinfo(attrs)
|
|
}
|
|
case syscall.IFLA_OPERSTATE:
|
|
base.OperState = LinkOperState(uint8(attr.Value[0]))
|
|
}
|
|
}
|
|
|
|
if stats64 != nil {
|
|
base.Statistics = parseLinkStats64(stats64)
|
|
} else if stats32 != nil {
|
|
base.Statistics = parseLinkStats32(stats32)
|
|
}
|
|
|
|
// Links that don't have IFLA_INFO_KIND are hardware devices
|
|
if link == nil {
|
|
link = &Device{}
|
|
}
|
|
*link.Attrs() = base
|
|
|
|
return link, nil
|
|
}
|
|
|
|
// LinkList gets a list of link devices.
|
|
// Equivalent to: `ip link show`
|
|
func LinkList() ([]Link, error) {
|
|
return pkgHandle.LinkList()
|
|
}
|
|
|
|
// LinkList gets a list of link devices.
|
|
// Equivalent to: `ip link show`
|
|
func (h *Handle) LinkList() ([]Link, error) {
|
|
// NOTE(vish): This duplicates functionality in net/iface_linux.go, but we need
|
|
// to get the message ourselves to parse link type.
|
|
req := h.newNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_DUMP)
|
|
|
|
msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
|
|
req.AddData(msg)
|
|
|
|
msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWLINK)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var res []Link
|
|
for _, m := range msgs {
|
|
link, err := LinkDeserialize(nil, m)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
res = append(res, link)
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
// LinkUpdate is used to pass information back from LinkSubscribe()
|
|
type LinkUpdate struct {
|
|
nl.IfInfomsg
|
|
Header syscall.NlMsghdr
|
|
Link
|
|
}
|
|
|
|
// LinkSubscribe takes a chan down which notifications will be sent
|
|
// when links change. Close the 'done' chan to stop subscription.
|
|
func LinkSubscribe(ch chan<- LinkUpdate, done <-chan struct{}) error {
|
|
return linkSubscribe(netns.None(), netns.None(), ch, done)
|
|
}
|
|
|
|
// LinkSubscribeAt works like LinkSubscribe plus it allows the caller
|
|
// to choose the network namespace in which to subscribe (ns).
|
|
func LinkSubscribeAt(ns netns.NsHandle, ch chan<- LinkUpdate, done <-chan struct{}) error {
|
|
return linkSubscribe(ns, netns.None(), ch, done)
|
|
}
|
|
|
|
func linkSubscribe(newNs, curNs netns.NsHandle, ch chan<- LinkUpdate, done <-chan struct{}) error {
|
|
s, err := nl.SubscribeAt(newNs, curNs, syscall.NETLINK_ROUTE, syscall.RTNLGRP_LINK)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if done != nil {
|
|
go func() {
|
|
<-done
|
|
s.Close()
|
|
}()
|
|
}
|
|
go func() {
|
|
defer close(ch)
|
|
for {
|
|
msgs, err := s.Receive()
|
|
if err != nil {
|
|
return
|
|
}
|
|
for _, m := range msgs {
|
|
ifmsg := nl.DeserializeIfInfomsg(m.Data)
|
|
link, err := LinkDeserialize(&m.Header, m.Data)
|
|
if err != nil {
|
|
return
|
|
}
|
|
ch <- LinkUpdate{IfInfomsg: *ifmsg, Header: m.Header, Link: link}
|
|
}
|
|
}
|
|
}()
|
|
|
|
return nil
|
|
}
|
|
|
|
func LinkSetHairpin(link Link, mode bool) error {
|
|
return pkgHandle.LinkSetHairpin(link, mode)
|
|
}
|
|
|
|
func (h *Handle) LinkSetHairpin(link Link, mode bool) error {
|
|
return h.setProtinfoAttr(link, mode, nl.IFLA_BRPORT_MODE)
|
|
}
|
|
|
|
func LinkSetGuard(link Link, mode bool) error {
|
|
return pkgHandle.LinkSetGuard(link, mode)
|
|
}
|
|
|
|
func (h *Handle) LinkSetGuard(link Link, mode bool) error {
|
|
return h.setProtinfoAttr(link, mode, nl.IFLA_BRPORT_GUARD)
|
|
}
|
|
|
|
func LinkSetFastLeave(link Link, mode bool) error {
|
|
return pkgHandle.LinkSetFastLeave(link, mode)
|
|
}
|
|
|
|
func (h *Handle) LinkSetFastLeave(link Link, mode bool) error {
|
|
return h.setProtinfoAttr(link, mode, nl.IFLA_BRPORT_FAST_LEAVE)
|
|
}
|
|
|
|
func LinkSetLearning(link Link, mode bool) error {
|
|
return pkgHandle.LinkSetLearning(link, mode)
|
|
}
|
|
|
|
func (h *Handle) LinkSetLearning(link Link, mode bool) error {
|
|
return h.setProtinfoAttr(link, mode, nl.IFLA_BRPORT_LEARNING)
|
|
}
|
|
|
|
func LinkSetRootBlock(link Link, mode bool) error {
|
|
return pkgHandle.LinkSetRootBlock(link, mode)
|
|
}
|
|
|
|
func (h *Handle) LinkSetRootBlock(link Link, mode bool) error {
|
|
return h.setProtinfoAttr(link, mode, nl.IFLA_BRPORT_PROTECT)
|
|
}
|
|
|
|
func LinkSetFlood(link Link, mode bool) error {
|
|
return pkgHandle.LinkSetFlood(link, mode)
|
|
}
|
|
|
|
func (h *Handle) LinkSetFlood(link Link, mode bool) error {
|
|
return h.setProtinfoAttr(link, mode, nl.IFLA_BRPORT_UNICAST_FLOOD)
|
|
}
|
|
|
|
func (h *Handle) setProtinfoAttr(link Link, mode bool, attr int) error {
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(syscall.AF_BRIDGE)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
br := nl.NewRtAttr(syscall.IFLA_PROTINFO|syscall.NLA_F_NESTED, nil)
|
|
nl.NewRtAttrChild(br, attr, boolToByte(mode))
|
|
req.AddData(br)
|
|
_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func parseVlanData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
vlan := link.(*Vlan)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_VLAN_ID:
|
|
vlan.VlanId = int(native.Uint16(datum.Value[0:2]))
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseVxlanData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
vxlan := link.(*Vxlan)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_VXLAN_ID:
|
|
vxlan.VxlanId = int(native.Uint32(datum.Value[0:4]))
|
|
case nl.IFLA_VXLAN_LINK:
|
|
vxlan.VtepDevIndex = int(native.Uint32(datum.Value[0:4]))
|
|
case nl.IFLA_VXLAN_LOCAL:
|
|
vxlan.SrcAddr = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_VXLAN_LOCAL6:
|
|
vxlan.SrcAddr = net.IP(datum.Value[0:16])
|
|
case nl.IFLA_VXLAN_GROUP:
|
|
vxlan.Group = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_VXLAN_GROUP6:
|
|
vxlan.Group = net.IP(datum.Value[0:16])
|
|
case nl.IFLA_VXLAN_TTL:
|
|
vxlan.TTL = int(datum.Value[0])
|
|
case nl.IFLA_VXLAN_TOS:
|
|
vxlan.TOS = int(datum.Value[0])
|
|
case nl.IFLA_VXLAN_LEARNING:
|
|
vxlan.Learning = int8(datum.Value[0]) != 0
|
|
case nl.IFLA_VXLAN_PROXY:
|
|
vxlan.Proxy = int8(datum.Value[0]) != 0
|
|
case nl.IFLA_VXLAN_RSC:
|
|
vxlan.RSC = int8(datum.Value[0]) != 0
|
|
case nl.IFLA_VXLAN_L2MISS:
|
|
vxlan.L2miss = int8(datum.Value[0]) != 0
|
|
case nl.IFLA_VXLAN_L3MISS:
|
|
vxlan.L3miss = int8(datum.Value[0]) != 0
|
|
case nl.IFLA_VXLAN_UDP_CSUM:
|
|
vxlan.UDPCSum = int8(datum.Value[0]) != 0
|
|
case nl.IFLA_VXLAN_GBP:
|
|
vxlan.GBP = true
|
|
case nl.IFLA_VXLAN_AGEING:
|
|
vxlan.Age = int(native.Uint32(datum.Value[0:4]))
|
|
vxlan.NoAge = vxlan.Age == 0
|
|
case nl.IFLA_VXLAN_LIMIT:
|
|
vxlan.Limit = int(native.Uint32(datum.Value[0:4]))
|
|
case nl.IFLA_VXLAN_PORT:
|
|
vxlan.Port = int(ntohs(datum.Value[0:2]))
|
|
case nl.IFLA_VXLAN_PORT_RANGE:
|
|
buf := bytes.NewBuffer(datum.Value[0:4])
|
|
var pr vxlanPortRange
|
|
if binary.Read(buf, binary.BigEndian, &pr) != nil {
|
|
vxlan.PortLow = int(pr.Lo)
|
|
vxlan.PortHigh = int(pr.Hi)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseBondData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
bond := NewLinkBond(NewLinkAttrs())
|
|
for i := range data {
|
|
switch data[i].Attr.Type {
|
|
case nl.IFLA_BOND_MODE:
|
|
bond.Mode = BondMode(data[i].Value[0])
|
|
case nl.IFLA_BOND_ACTIVE_SLAVE:
|
|
bond.ActiveSlave = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_MIIMON:
|
|
bond.Miimon = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_UPDELAY:
|
|
bond.UpDelay = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_DOWNDELAY:
|
|
bond.DownDelay = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_USE_CARRIER:
|
|
bond.UseCarrier = int(data[i].Value[0])
|
|
case nl.IFLA_BOND_ARP_INTERVAL:
|
|
bond.ArpInterval = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_ARP_IP_TARGET:
|
|
// TODO: implement
|
|
case nl.IFLA_BOND_ARP_VALIDATE:
|
|
bond.ArpValidate = BondArpValidate(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_ARP_ALL_TARGETS:
|
|
bond.ArpAllTargets = BondArpAllTargets(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_PRIMARY:
|
|
bond.Primary = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_PRIMARY_RESELECT:
|
|
bond.PrimaryReselect = BondPrimaryReselect(data[i].Value[0])
|
|
case nl.IFLA_BOND_FAIL_OVER_MAC:
|
|
bond.FailOverMac = BondFailOverMac(data[i].Value[0])
|
|
case nl.IFLA_BOND_XMIT_HASH_POLICY:
|
|
bond.XmitHashPolicy = BondXmitHashPolicy(data[i].Value[0])
|
|
case nl.IFLA_BOND_RESEND_IGMP:
|
|
bond.ResendIgmp = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_NUM_PEER_NOTIF:
|
|
bond.NumPeerNotif = int(data[i].Value[0])
|
|
case nl.IFLA_BOND_ALL_SLAVES_ACTIVE:
|
|
bond.AllSlavesActive = int(data[i].Value[0])
|
|
case nl.IFLA_BOND_MIN_LINKS:
|
|
bond.MinLinks = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_LP_INTERVAL:
|
|
bond.LpInterval = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_PACKETS_PER_SLAVE:
|
|
bond.PackersPerSlave = int(native.Uint32(data[i].Value[0:4]))
|
|
case nl.IFLA_BOND_AD_LACP_RATE:
|
|
bond.LacpRate = BondLacpRate(data[i].Value[0])
|
|
case nl.IFLA_BOND_AD_SELECT:
|
|
bond.AdSelect = BondAdSelect(data[i].Value[0])
|
|
case nl.IFLA_BOND_AD_INFO:
|
|
// TODO: implement
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseIPVlanData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
ipv := link.(*IPVlan)
|
|
for _, datum := range data {
|
|
if datum.Attr.Type == nl.IFLA_IPVLAN_MODE {
|
|
ipv.Mode = IPVlanMode(native.Uint32(datum.Value[0:4]))
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseMacvtapData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
macv := link.(*Macvtap)
|
|
parseMacvlanData(&macv.Macvlan, data)
|
|
}
|
|
|
|
func parseMacvlanData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
macv := link.(*Macvlan)
|
|
for _, datum := range data {
|
|
if datum.Attr.Type == nl.IFLA_MACVLAN_MODE {
|
|
switch native.Uint32(datum.Value[0:4]) {
|
|
case nl.MACVLAN_MODE_PRIVATE:
|
|
macv.Mode = MACVLAN_MODE_PRIVATE
|
|
case nl.MACVLAN_MODE_VEPA:
|
|
macv.Mode = MACVLAN_MODE_VEPA
|
|
case nl.MACVLAN_MODE_BRIDGE:
|
|
macv.Mode = MACVLAN_MODE_BRIDGE
|
|
case nl.MACVLAN_MODE_PASSTHRU:
|
|
macv.Mode = MACVLAN_MODE_PASSTHRU
|
|
case nl.MACVLAN_MODE_SOURCE:
|
|
macv.Mode = MACVLAN_MODE_SOURCE
|
|
}
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
// copied from pkg/net_linux.go
|
|
func linkFlags(rawFlags uint32) net.Flags {
|
|
var f net.Flags
|
|
if rawFlags&syscall.IFF_UP != 0 {
|
|
f |= net.FlagUp
|
|
}
|
|
if rawFlags&syscall.IFF_BROADCAST != 0 {
|
|
f |= net.FlagBroadcast
|
|
}
|
|
if rawFlags&syscall.IFF_LOOPBACK != 0 {
|
|
f |= net.FlagLoopback
|
|
}
|
|
if rawFlags&syscall.IFF_POINTOPOINT != 0 {
|
|
f |= net.FlagPointToPoint
|
|
}
|
|
if rawFlags&syscall.IFF_MULTICAST != 0 {
|
|
f |= net.FlagMulticast
|
|
}
|
|
return f
|
|
}
|
|
|
|
func addGretapAttrs(gretap *Gretap, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
|
|
ip := gretap.Local.To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_LOCAL, []byte(ip))
|
|
}
|
|
ip = gretap.Remote.To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_REMOTE, []byte(ip))
|
|
}
|
|
|
|
if gretap.IKey != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_IKEY, htonl(gretap.IKey))
|
|
gretap.IFlags |= uint16(nl.GRE_KEY)
|
|
}
|
|
|
|
if gretap.OKey != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_OKEY, htonl(gretap.OKey))
|
|
gretap.OFlags |= uint16(nl.GRE_KEY)
|
|
}
|
|
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_IFLAGS, htons(gretap.IFlags))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_OFLAGS, htons(gretap.OFlags))
|
|
|
|
if gretap.Link != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_LINK, nl.Uint32Attr(gretap.Link))
|
|
}
|
|
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_PMTUDISC, nl.Uint8Attr(gretap.PMtuDisc))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_TTL, nl.Uint8Attr(gretap.Ttl))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_TOS, nl.Uint8Attr(gretap.Tos))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_TYPE, nl.Uint16Attr(gretap.EncapType))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_FLAGS, nl.Uint16Attr(gretap.EncapFlags))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_SPORT, htons(gretap.EncapSport))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_DPORT, htons(gretap.EncapDport))
|
|
}
|
|
|
|
func parseGretapData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
gre := link.(*Gretap)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_GRE_OKEY:
|
|
gre.IKey = ntohl(datum.Value[0:4])
|
|
case nl.IFLA_GRE_IKEY:
|
|
gre.OKey = ntohl(datum.Value[0:4])
|
|
case nl.IFLA_GRE_LOCAL:
|
|
gre.Local = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_GRE_REMOTE:
|
|
gre.Remote = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_GRE_ENCAP_SPORT:
|
|
gre.EncapSport = ntohs(datum.Value[0:2])
|
|
case nl.IFLA_GRE_ENCAP_DPORT:
|
|
gre.EncapDport = ntohs(datum.Value[0:2])
|
|
case nl.IFLA_GRE_IFLAGS:
|
|
gre.IFlags = ntohs(datum.Value[0:2])
|
|
case nl.IFLA_GRE_OFLAGS:
|
|
gre.OFlags = ntohs(datum.Value[0:2])
|
|
|
|
case nl.IFLA_GRE_TTL:
|
|
gre.Ttl = uint8(datum.Value[0])
|
|
case nl.IFLA_GRE_TOS:
|
|
gre.Tos = uint8(datum.Value[0])
|
|
case nl.IFLA_GRE_PMTUDISC:
|
|
gre.PMtuDisc = uint8(datum.Value[0])
|
|
case nl.IFLA_GRE_ENCAP_TYPE:
|
|
gre.EncapType = native.Uint16(datum.Value[0:2])
|
|
case nl.IFLA_GRE_ENCAP_FLAGS:
|
|
gre.EncapFlags = native.Uint16(datum.Value[0:2])
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseLinkStats32(data []byte) *LinkStatistics {
|
|
return (*LinkStatistics)((*LinkStatistics32)(unsafe.Pointer(&data[0:SizeofLinkStats32][0])).to64())
|
|
}
|
|
|
|
func parseLinkStats64(data []byte) *LinkStatistics {
|
|
return (*LinkStatistics)((*LinkStatistics64)(unsafe.Pointer(&data[0:SizeofLinkStats64][0])))
|
|
}
|
|
|
|
func addXdpAttrs(xdp *LinkXdp, req *nl.NetlinkRequest) {
|
|
attrs := nl.NewRtAttr(nl.IFLA_XDP|syscall.NLA_F_NESTED, nil)
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, uint32(xdp.Fd))
|
|
nl.NewRtAttrChild(attrs, nl.IFLA_XDP_FD, b)
|
|
req.AddData(attrs)
|
|
}
|
|
|
|
func parseLinkXdp(data []byte) (*LinkXdp, error) {
|
|
attrs, err := nl.ParseRouteAttr(data)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
xdp := &LinkXdp{}
|
|
for _, attr := range attrs {
|
|
switch attr.Attr.Type {
|
|
case nl.IFLA_XDP_FD:
|
|
xdp.Fd = int(native.Uint32(attr.Value[0:4]))
|
|
case nl.IFLA_XDP_ATTACHED:
|
|
xdp.Attached = attr.Value[0] != 0
|
|
}
|
|
}
|
|
return xdp, nil
|
|
}
|
|
|
|
func addIptunAttrs(iptun *Iptun, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
|
|
ip := iptun.Local.To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_LOCAL, []byte(ip))
|
|
}
|
|
|
|
ip = iptun.Remote.To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_REMOTE, []byte(ip))
|
|
}
|
|
|
|
if iptun.Link != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_LINK, nl.Uint32Attr(iptun.Link))
|
|
}
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_PMTUDISC, nl.Uint8Attr(iptun.PMtuDisc))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_TTL, nl.Uint8Attr(iptun.Ttl))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_TOS, nl.Uint8Attr(iptun.Tos))
|
|
}
|
|
|
|
func parseIptunData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
iptun := link.(*Iptun)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_IPTUN_LOCAL:
|
|
iptun.Local = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_IPTUN_REMOTE:
|
|
iptun.Remote = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_IPTUN_TTL:
|
|
iptun.Ttl = uint8(datum.Value[0])
|
|
case nl.IFLA_IPTUN_TOS:
|
|
iptun.Tos = uint8(datum.Value[0])
|
|
case nl.IFLA_IPTUN_PMTUDISC:
|
|
iptun.PMtuDisc = uint8(datum.Value[0])
|
|
}
|
|
}
|
|
}
|
|
|
|
func addVtiAttrs(vti *Vti, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
|
|
ip := vti.Local.To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VTI_LOCAL, []byte(ip))
|
|
}
|
|
|
|
ip = vti.Remote.To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VTI_REMOTE, []byte(ip))
|
|
}
|
|
|
|
if vti.Link != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VTI_LINK, nl.Uint32Attr(vti.Link))
|
|
}
|
|
|
|
nl.NewRtAttrChild(data, nl.IFLA_VTI_IKEY, htonl(vti.IKey))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VTI_OKEY, htonl(vti.OKey))
|
|
}
|
|
|
|
func parseVtiData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
vti := link.(*Vti)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_VTI_LOCAL:
|
|
vti.Local = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_VTI_REMOTE:
|
|
vti.Remote = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_VTI_IKEY:
|
|
vti.IKey = ntohl(datum.Value[0:4])
|
|
case nl.IFLA_VTI_OKEY:
|
|
vti.OKey = ntohl(datum.Value[0:4])
|
|
}
|
|
}
|
|
}
|
|
|
|
func addVrfAttrs(vrf *Vrf, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, uint32(vrf.Table))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VRF_TABLE, b)
|
|
}
|
|
|
|
func parseVrfData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
vrf := link.(*Vrf)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_VRF_TABLE:
|
|
vrf.Table = native.Uint32(datum.Value[0:4])
|
|
}
|
|
}
|
|
}
|