mirror of https://github.com/vishvananda/netlink
2537 lines
73 KiB
Go
2537 lines
73 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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"strings"
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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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"golang.org/x/sys/unix"
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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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)
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const (
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TUNTAP_MODE_TUN TuntapMode = unix.IFF_TUN
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TUNTAP_MODE_TAP TuntapMode = unix.IFF_TAP
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TUNTAP_DEFAULTS TuntapFlag = unix.IFF_TUN_EXCL | unix.IFF_ONE_QUEUE
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TUNTAP_VNET_HDR TuntapFlag = unix.IFF_VNET_HDR
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TUNTAP_TUN_EXCL TuntapFlag = unix.IFF_TUN_EXCL
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TUNTAP_NO_PI TuntapFlag = unix.IFF_NO_PI
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TUNTAP_ONE_QUEUE TuntapFlag = unix.IFF_ONE_QUEUE
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TUNTAP_MULTI_QUEUE TuntapFlag = unix.IFF_MULTI_QUEUE
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TUNTAP_MULTI_QUEUE_DEFAULTS TuntapFlag = TUNTAP_MULTI_QUEUE | TUNTAP_NO_PI
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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) LinkSetARPOff(link Link) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
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msg.Change |= unix.IFF_NOARP
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msg.Flags |= unix.IFF_NOARP
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(unix.NETLINK_ROUTE, 0)
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return err
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}
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func LinkSetARPOff(link Link) error {
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return pkgHandle.LinkSetARPOff(link)
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}
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func (h *Handle) LinkSetARPOn(link Link) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
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msg.Change |= unix.IFF_NOARP
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msg.Flags &= ^uint32(unix.IFF_NOARP)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(unix.NETLINK_ROUTE, 0)
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return err
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}
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func LinkSetARPOn(link Link) error {
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return pkgHandle.LinkSetARPOn(link)
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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(unix.RTM_SETLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
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msg.Change = unix.IFF_PROMISC
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msg.Flags = unix.IFF_PROMISC
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(unix.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetAllmulticastOn enables the reception of all hardware multicast packets for the link device.
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// Equivalent to: `ip link set $link allmulticast on`
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func LinkSetAllmulticastOn(link Link) error {
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return pkgHandle.LinkSetAllmulticastOn(link)
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}
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// LinkSetAllmulticastOn enables the reception of all hardware multicast packets for the link device.
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// Equivalent to: `ip link set $link allmulticast on`
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func (h *Handle) LinkSetAllmulticastOn(link Link) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(unix.RTM_NEWLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
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msg.Change = unix.IFF_ALLMULTI
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msg.Flags = unix.IFF_ALLMULTI
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(unix.NETLINK_ROUTE, 0)
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return err
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}
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// LinkSetAllmulticastOff disables the reception of all hardware multicast packets for the link device.
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// Equivalent to: `ip link set $link allmulticast off`
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func LinkSetAllmulticastOff(link Link) error {
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return pkgHandle.LinkSetAllmulticastOff(link)
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}
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// LinkSetAllmulticastOff disables the reception of all hardware multicast packets for the link device.
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// Equivalent to: `ip link set $link allmulticast off`
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func (h *Handle) LinkSetAllmulticastOff(link Link) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(unix.RTM_NEWLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
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msg.Change = unix.IFF_ALLMULTI
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(unix.NETLINK_ROUTE, 0)
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return err
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}
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func MacvlanMACAddrAdd(link Link, addr net.HardwareAddr) error {
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return pkgHandle.MacvlanMACAddrAdd(link, addr)
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}
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func (h *Handle) MacvlanMACAddrAdd(link Link, addr net.HardwareAddr) error {
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return h.macvlanMACAddrChange(link, []net.HardwareAddr{addr}, nl.MACVLAN_MACADDR_ADD)
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}
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func MacvlanMACAddrDel(link Link, addr net.HardwareAddr) error {
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return pkgHandle.MacvlanMACAddrDel(link, addr)
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}
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func (h *Handle) MacvlanMACAddrDel(link Link, addr net.HardwareAddr) error {
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return h.macvlanMACAddrChange(link, []net.HardwareAddr{addr}, nl.MACVLAN_MACADDR_DEL)
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}
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func MacvlanMACAddrFlush(link Link) error {
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return pkgHandle.MacvlanMACAddrFlush(link)
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}
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func (h *Handle) MacvlanMACAddrFlush(link Link) error {
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return h.macvlanMACAddrChange(link, nil, nl.MACVLAN_MACADDR_FLUSH)
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}
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func MacvlanMACAddrSet(link Link, addrs []net.HardwareAddr) error {
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return pkgHandle.MacvlanMACAddrSet(link, addrs)
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}
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func (h *Handle) MacvlanMACAddrSet(link Link, addrs []net.HardwareAddr) error {
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return h.macvlanMACAddrChange(link, addrs, nl.MACVLAN_MACADDR_SET)
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}
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func (h *Handle) macvlanMACAddrChange(link Link, addrs []net.HardwareAddr, mode uint32) error {
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base := link.Attrs()
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h.ensureIndex(base)
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req := h.newNetlinkRequest(unix.RTM_NEWLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
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msg.Index = int32(base.Index)
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req.AddData(msg)
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linkInfo := nl.NewRtAttr(unix.IFLA_LINKINFO, nil)
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nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_KIND, nl.NonZeroTerminated(link.Type()))
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inner := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
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// IFLA_MACVLAN_MACADDR_MODE = mode
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b := make([]byte, 4)
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native.PutUint32(b, mode)
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nl.NewRtAttrChild(inner, nl.IFLA_MACVLAN_MACADDR_MODE, b)
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// populate message with MAC addrs, if necessary
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switch mode {
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case nl.MACVLAN_MACADDR_ADD, nl.MACVLAN_MACADDR_DEL:
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if len(addrs) == 1 {
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nl.NewRtAttrChild(inner, nl.IFLA_MACVLAN_MACADDR, []byte(addrs[0]))
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}
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case nl.MACVLAN_MACADDR_SET:
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mad := nl.NewRtAttrChild(inner, nl.IFLA_MACVLAN_MACADDR_DATA, nil)
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for _, addr := range addrs {
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nl.NewRtAttrChild(mad, nl.IFLA_MACVLAN_MACADDR, []byte(addr))
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}
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}
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req.AddData(linkInfo)
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_, err := req.Execute(unix.NETLINK_ROUTE, 0)
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return err
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}
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func BridgeSetMcastSnoop(link Link, on bool) error {
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return pkgHandle.BridgeSetMcastSnoop(link, on)
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}
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func (h *Handle) BridgeSetMcastSnoop(link Link, on bool) error {
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bridge := link.(*Bridge)
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bridge.MulticastSnooping = &on
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return h.linkModify(bridge, unix.NLM_F_ACK)
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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(unix.RTM_SETLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
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msg.Change = unix.IFF_PROMISC
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msg.Index = int32(base.Index)
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req.AddData(msg)
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_, err := req.Execute(unix.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(unix.RTM_NEWLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
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msg.Change = unix.IFF_UP
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msg.Flags = unix.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(unix.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(unix.RTM_NEWLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
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msg.Change = unix.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(unix.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(unix.RTM_SETLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.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(unix.IFLA_MTU, b)
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req.AddData(data)
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_, err := req.Execute(unix.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(unix.RTM_SETLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.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(unix.IFLA_IFNAME, []byte(name))
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req.AddData(data)
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_, err := req.Execute(unix.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(unix.RTM_SETLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.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(unix.IFLA_IFALIAS, []byte(name))
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req.AddData(data)
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_, err := req.Execute(unix.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(unix.RTM_SETLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.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(unix.IFLA_ADDRESS, []byte(hwaddr))
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req.AddData(data)
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_, err := req.Execute(unix.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(unix.RTM_SETLINK, unix.NLM_F_ACK)
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msg := nl.NewIfInfomsg(unix.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(unix.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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|
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_, err := req.Execute(unix.NETLINK_ROUTE, 0)
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return err
|
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}
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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(unix.RTM_SETLINK, unix.NLM_F_ACK)
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|
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msg := nl.NewIfInfomsg(unix.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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data := nl.NewRtAttr(unix.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())
|
|
req.AddData(data)
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
// LinkSetVfTxRate sets the tx rate of a vf for the link.
|
|
// Equivalent to: `ip link set $link vf $vf rate $rate`
|
|
func LinkSetVfTxRate(link Link, vf, rate int) error {
|
|
return pkgHandle.LinkSetVfTxRate(link, vf, rate)
|
|
}
|
|
|
|
// LinkSetVfTxRate sets the tx rate of a vf for the link.
|
|
// Equivalent to: `ip link set $link vf $vf rate $rate`
|
|
func (h *Handle) LinkSetVfTxRate(link Link, vf, rate int) error {
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
data := nl.NewRtAttr(unix.IFLA_VFINFO_LIST, nil)
|
|
info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil)
|
|
vfmsg := nl.VfTxRate{
|
|
Vf: uint32(vf),
|
|
Rate: uint32(rate),
|
|
}
|
|
nl.NewRtAttrChild(info, nl.IFLA_VF_TX_RATE, vfmsg.Serialize())
|
|
req.AddData(data)
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
// LinkSetVfSpoofchk enables/disables spoof check on a vf for the link.
|
|
// Equivalent to: `ip link set $link vf $vf spoofchk $check`
|
|
func LinkSetVfSpoofchk(link Link, vf int, check bool) error {
|
|
return pkgHandle.LinkSetVfSpoofchk(link, vf, check)
|
|
}
|
|
|
|
// LinkSetVfSpookfchk enables/disables spoof check on a vf for the link.
|
|
// Equivalent to: `ip link set $link vf $vf spoofchk $check`
|
|
func (h *Handle) LinkSetVfSpoofchk(link Link, vf int, check bool) error {
|
|
var setting uint32
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
data := nl.NewRtAttr(unix.IFLA_VFINFO_LIST, nil)
|
|
info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil)
|
|
if check {
|
|
setting = 1
|
|
}
|
|
vfmsg := nl.VfSpoofchk{
|
|
Vf: uint32(vf),
|
|
Setting: setting,
|
|
}
|
|
nl.NewRtAttrChild(info, nl.IFLA_VF_SPOOFCHK, vfmsg.Serialize())
|
|
req.AddData(data)
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
// LinkSetVfTrust enables/disables trust state on a vf for the link.
|
|
// Equivalent to: `ip link set $link vf $vf trust $state`
|
|
func LinkSetVfTrust(link Link, vf int, state bool) error {
|
|
return pkgHandle.LinkSetVfTrust(link, vf, state)
|
|
}
|
|
|
|
// LinkSetVfTrust enables/disables trust state on a vf for the link.
|
|
// Equivalent to: `ip link set $link vf $vf trust $state`
|
|
func (h *Handle) LinkSetVfTrust(link Link, vf int, state bool) error {
|
|
var setting uint32
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
data := nl.NewRtAttr(unix.IFLA_VFINFO_LIST, nil)
|
|
info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil)
|
|
if state {
|
|
setting = 1
|
|
}
|
|
vfmsg := nl.VfTrust{
|
|
Vf: uint32(vf),
|
|
Setting: setting,
|
|
}
|
|
nl.NewRtAttrChild(info, nl.IFLA_VF_TRUST, vfmsg.Serialize())
|
|
req.AddData(data)
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
// LinkSetVfNodeGUID sets the node GUID of a vf for the link.
|
|
// Equivalent to: `ip link set dev $link vf $vf node_guid $nodeguid`
|
|
func LinkSetVfNodeGUID(link Link, vf int, nodeguid net.HardwareAddr) error {
|
|
return pkgHandle.LinkSetVfGUID(link, vf, nodeguid, nl.IFLA_VF_IB_NODE_GUID)
|
|
}
|
|
|
|
// LinkSetVfPortGUID sets the port GUID of a vf for the link.
|
|
// Equivalent to: `ip link set dev $link vf $vf port_guid $portguid`
|
|
func LinkSetVfPortGUID(link Link, vf int, portguid net.HardwareAddr) error {
|
|
return pkgHandle.LinkSetVfGUID(link, vf, portguid, nl.IFLA_VF_IB_PORT_GUID)
|
|
}
|
|
|
|
// LinkSetVfGUID sets the node or port GUID of a vf for the link.
|
|
func (h *Handle) LinkSetVfGUID(link Link, vf int, vfGuid net.HardwareAddr, guidType int) error {
|
|
var err error
|
|
var guid uint64
|
|
|
|
buf := bytes.NewBuffer(vfGuid)
|
|
err = binary.Read(buf, binary.LittleEndian, &guid)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
data := nl.NewRtAttr(unix.IFLA_VFINFO_LIST, nil)
|
|
info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil)
|
|
vfmsg := nl.VfGUID{
|
|
Vf: uint32(vf),
|
|
GUID: guid,
|
|
}
|
|
nl.NewRtAttrChild(info, guidType, vfmsg.Serialize())
|
|
req.AddData(data)
|
|
|
|
_, err = req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
// LinkSetMaster sets the master of the link device.
|
|
// Equivalent to: `ip link set $link master $master`
|
|
func LinkSetMaster(link Link, master *Bridge) error {
|
|
return pkgHandle.LinkSetMaster(link, master)
|
|
}
|
|
|
|
// LinkSetMaster sets the master of the link device.
|
|
// Equivalent to: `ip link set $link master $master`
|
|
func (h *Handle) LinkSetMaster(link Link, master *Bridge) error {
|
|
index := 0
|
|
if master != nil {
|
|
masterBase := master.Attrs()
|
|
h.ensureIndex(masterBase)
|
|
index = masterBase.Index
|
|
}
|
|
if index <= 0 {
|
|
return fmt.Errorf("Device does not exist")
|
|
}
|
|
return h.LinkSetMasterByIndex(link, index)
|
|
}
|
|
|
|
// LinkSetNoMaster removes the master of the link device.
|
|
// Equivalent to: `ip link set $link nomaster`
|
|
func LinkSetNoMaster(link Link) error {
|
|
return pkgHandle.LinkSetNoMaster(link)
|
|
}
|
|
|
|
// LinkSetNoMaster removes the master of the link device.
|
|
// Equivalent to: `ip link set $link nomaster`
|
|
func (h *Handle) LinkSetNoMaster(link Link) error {
|
|
return h.LinkSetMasterByIndex(link, 0)
|
|
}
|
|
|
|
// LinkSetMasterByIndex sets the master of the link device.
|
|
// Equivalent to: `ip link set $link master $master`
|
|
func LinkSetMasterByIndex(link Link, masterIndex int) error {
|
|
return pkgHandle.LinkSetMasterByIndex(link, masterIndex)
|
|
}
|
|
|
|
// LinkSetMasterByIndex sets the master of the link device.
|
|
// Equivalent to: `ip link set $link master $master`
|
|
func (h *Handle) LinkSetMasterByIndex(link Link, masterIndex int) error {
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, uint32(masterIndex))
|
|
|
|
data := nl.NewRtAttr(unix.IFLA_MASTER, b)
|
|
req.AddData(data)
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
// LinkSetNsPid puts the device into a new network namespace. The
|
|
// pid must be a pid of a running process.
|
|
// Equivalent to: `ip link set $link netns $pid`
|
|
func LinkSetNsPid(link Link, nspid int) error {
|
|
return pkgHandle.LinkSetNsPid(link, nspid)
|
|
}
|
|
|
|
// LinkSetNsPid puts the device into a new network namespace. The
|
|
// pid must be a pid of a running process.
|
|
// Equivalent to: `ip link set $link netns $pid`
|
|
func (h *Handle) LinkSetNsPid(link Link, nspid int) error {
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, uint32(nspid))
|
|
|
|
data := nl.NewRtAttr(unix.IFLA_NET_NS_PID, b)
|
|
req.AddData(data)
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
// LinkSetNsFd puts the device into a new network namespace. The
|
|
// fd must be an open file descriptor to a network namespace.
|
|
// Similar to: `ip link set $link netns $ns`
|
|
func LinkSetNsFd(link Link, fd int) error {
|
|
return pkgHandle.LinkSetNsFd(link, fd)
|
|
}
|
|
|
|
// LinkSetNsFd puts the device into a new network namespace. The
|
|
// fd must be an open file descriptor to a network namespace.
|
|
// Similar to: `ip link set $link netns $ns`
|
|
func (h *Handle) LinkSetNsFd(link Link, fd int) error {
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, uint32(fd))
|
|
|
|
data := nl.NewRtAttr(unix.IFLA_NET_NS_FD, b)
|
|
req.AddData(data)
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
// LinkSetXdpFd adds a bpf function to the driver. The fd must be a bpf
|
|
// program loaded with bpf(type=BPF_PROG_TYPE_XDP)
|
|
func LinkSetXdpFd(link Link, fd int) error {
|
|
return LinkSetXdpFdWithFlags(link, fd, 0)
|
|
}
|
|
|
|
// LinkSetXdpFdWithFlags adds a bpf function to the driver with the given
|
|
// options. The fd must be a bpf program loaded with bpf(type=BPF_PROG_TYPE_XDP)
|
|
func LinkSetXdpFdWithFlags(link Link, fd, flags int) error {
|
|
base := link.Attrs()
|
|
ensureIndex(base)
|
|
req := nl.NewNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
addXdpAttrs(&LinkXdp{Fd: fd, Flags: uint32(flags)}, req)
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
func boolAttr(val bool) []byte {
|
|
var v uint8
|
|
if val {
|
|
v = 1
|
|
}
|
|
return nl.Uint8Attr(v)
|
|
}
|
|
|
|
type vxlanPortRange struct {
|
|
Lo, Hi uint16
|
|
}
|
|
|
|
func addVxlanAttrs(vxlan *Vxlan, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
|
|
if vxlan.FlowBased {
|
|
vxlan.VxlanId = 0
|
|
}
|
|
|
|
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))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_UDP_ZERO_CSUM6_TX, boolAttr(vxlan.UDP6ZeroCSumTx))
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_UDP_ZERO_CSUM6_RX, boolAttr(vxlan.UDP6ZeroCSumRx))
|
|
|
|
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.FlowBased {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VXLAN_FLOWBASED, boolAttr(vxlan.FlowBased))
|
|
}
|
|
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)))
|
|
}
|
|
if bond.AdActorSysPrio >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_AD_ACTOR_SYS_PRIO, nl.Uint16Attr(uint16(bond.AdActorSysPrio)))
|
|
}
|
|
if bond.AdUserPortKey >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_AD_USER_PORT_KEY, nl.Uint16Attr(uint16(bond.AdUserPortKey)))
|
|
}
|
|
if bond.AdActorSystem != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_AD_ACTOR_SYSTEM, []byte(bond.AdActorSystem))
|
|
}
|
|
if bond.TlbDynamicLb >= 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BOND_TLB_DYNAMIC_LB, nl.Uint8Attr(uint8(bond.TlbDynamicLb)))
|
|
}
|
|
}
|
|
|
|
func cleanupFds(fds []*os.File) {
|
|
for _, f := range fds {
|
|
f.Close()
|
|
}
|
|
}
|
|
|
|
// 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 from the parameters in the link object.
|
|
// Equivalent to: `ip link add $link`
|
|
func (h *Handle) LinkAdd(link Link) error {
|
|
return h.linkModify(link, unix.NLM_F_CREATE|unix.NLM_F_EXCL|unix.NLM_F_ACK)
|
|
}
|
|
|
|
func (h *Handle) linkModify(link Link, flags int) error {
|
|
// TODO: support extra data for macvlan
|
|
base := link.Attrs()
|
|
|
|
// if tuntap, then the name can be empty, OS will provide a name
|
|
tuntap, isTuntap := link.(*Tuntap)
|
|
|
|
if base.Name == "" && !isTuntap {
|
|
return fmt.Errorf("LinkAttrs.Name cannot be empty!")
|
|
}
|
|
|
|
if isTuntap {
|
|
// TODO: support user
|
|
// TODO: support group
|
|
if tuntap.Mode < unix.IFF_TUN || tuntap.Mode > unix.IFF_TAP {
|
|
return fmt.Errorf("Tuntap.Mode %v unknown!", tuntap.Mode)
|
|
}
|
|
|
|
queues := tuntap.Queues
|
|
|
|
var fds []*os.File
|
|
var req ifReq
|
|
copy(req.Name[:15], base.Name)
|
|
|
|
req.Flags = uint16(tuntap.Flags)
|
|
|
|
if queues == 0 { //Legacy compatibility
|
|
queues = 1
|
|
if tuntap.Flags == 0 {
|
|
req.Flags = uint16(TUNTAP_DEFAULTS)
|
|
}
|
|
} else {
|
|
// For best peformance set Flags to TUNTAP_MULTI_QUEUE_DEFAULTS | TUNTAP_VNET_HDR
|
|
// when a) KVM has support for this ABI and
|
|
// b) the value of the flag is queryable using the TUNGETIFF ioctl
|
|
if tuntap.Flags == 0 {
|
|
req.Flags = uint16(TUNTAP_MULTI_QUEUE_DEFAULTS)
|
|
}
|
|
}
|
|
|
|
req.Flags |= uint16(tuntap.Mode)
|
|
|
|
for i := 0; i < queues; i++ {
|
|
localReq := req
|
|
file, err := os.OpenFile("/dev/net/tun", os.O_RDWR, 0)
|
|
if err != nil {
|
|
cleanupFds(fds)
|
|
return err
|
|
}
|
|
|
|
fds = append(fds, file)
|
|
_, _, errno := unix.Syscall(unix.SYS_IOCTL, file.Fd(), uintptr(unix.TUNSETIFF), uintptr(unsafe.Pointer(&localReq)))
|
|
if errno != 0 {
|
|
cleanupFds(fds)
|
|
return fmt.Errorf("Tuntap IOCTL TUNSETIFF failed [%d], errno %v", i, errno)
|
|
}
|
|
// 1) we only care for the name of the first tap in the multi queue set
|
|
// 2) if the original name was empty, the localReq has now the actual name
|
|
//
|
|
// In addition:
|
|
// This ensures that the link name is always identical to what the kernel returns.
|
|
// Not only in case of an empty name, but also when using name templates.
|
|
// e.g. when the provided name is "tap%d", the kernel replaces %d with the next available number.
|
|
if i == 0 {
|
|
link.Attrs().Name = strings.Trim(string(localReq.Name[:]), "\x00")
|
|
}
|
|
}
|
|
|
|
// only persist interface if NonPersist is NOT set
|
|
if !tuntap.NonPersist {
|
|
_, _, errno := unix.Syscall(unix.SYS_IOCTL, fds[0].Fd(), uintptr(unix.TUNSETPERSIST), 1)
|
|
if errno != 0 {
|
|
cleanupFds(fds)
|
|
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?
|
|
err := h.LinkSetMasterByIndex(link, base.MasterIndex)
|
|
if err != nil {
|
|
// un-persist (e.g. allow the interface to be removed) the tuntap
|
|
// should not hurt if not set prior, condition might be not needed
|
|
if !tuntap.NonPersist {
|
|
_, _, _ = unix.Syscall(unix.SYS_IOCTL, fds[0].Fd(), uintptr(unix.TUNSETPERSIST), 0)
|
|
}
|
|
cleanupFds(fds)
|
|
return err
|
|
}
|
|
}
|
|
|
|
if tuntap.Queues == 0 {
|
|
cleanupFds(fds)
|
|
} else {
|
|
tuntap.Fds = fds
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
req := h.newNetlinkRequest(unix.RTM_NEWLINK, flags)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
// TODO: make it shorter
|
|
if base.Flags&net.FlagUp != 0 {
|
|
msg.Change = unix.IFF_UP
|
|
msg.Flags = unix.IFF_UP
|
|
}
|
|
if base.Flags&net.FlagBroadcast != 0 {
|
|
msg.Change |= unix.IFF_BROADCAST
|
|
msg.Flags |= unix.IFF_BROADCAST
|
|
}
|
|
if base.Flags&net.FlagLoopback != 0 {
|
|
msg.Change |= unix.IFF_LOOPBACK
|
|
msg.Flags |= unix.IFF_LOOPBACK
|
|
}
|
|
if base.Flags&net.FlagPointToPoint != 0 {
|
|
msg.Change |= unix.IFF_POINTOPOINT
|
|
msg.Flags |= unix.IFF_POINTOPOINT
|
|
}
|
|
if base.Flags&net.FlagMulticast != 0 {
|
|
msg.Change |= unix.IFF_MULTICAST
|
|
msg.Flags |= unix.IFF_MULTICAST
|
|
}
|
|
if base.Index != 0 {
|
|
msg.Index = int32(base.Index)
|
|
}
|
|
|
|
req.AddData(msg)
|
|
|
|
if base.ParentIndex != 0 {
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, uint32(base.ParentIndex))
|
|
data := nl.NewRtAttr(unix.IFLA_LINK, b)
|
|
req.AddData(data)
|
|
} else if link.Type() == "ipvlan" {
|
|
return fmt.Errorf("Can't create ipvlan link without ParentIndex")
|
|
}
|
|
|
|
nameData := nl.NewRtAttr(unix.IFLA_IFNAME, nl.ZeroTerminated(base.Name))
|
|
req.AddData(nameData)
|
|
|
|
if base.MTU > 0 {
|
|
mtu := nl.NewRtAttr(unix.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU)))
|
|
req.AddData(mtu)
|
|
}
|
|
|
|
if base.TxQLen >= 0 {
|
|
qlen := nl.NewRtAttr(unix.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen)))
|
|
req.AddData(qlen)
|
|
}
|
|
|
|
if base.HardwareAddr != nil {
|
|
hwaddr := nl.NewRtAttr(unix.IFLA_ADDRESS, []byte(base.HardwareAddr))
|
|
req.AddData(hwaddr)
|
|
}
|
|
|
|
if base.NumTxQueues > 0 {
|
|
txqueues := nl.NewRtAttr(unix.IFLA_NUM_TX_QUEUES, nl.Uint32Attr(uint32(base.NumTxQueues)))
|
|
req.AddData(txqueues)
|
|
}
|
|
|
|
if base.NumRxQueues > 0 {
|
|
rxqueues := nl.NewRtAttr(unix.IFLA_NUM_RX_QUEUES, nl.Uint32Attr(uint32(base.NumRxQueues)))
|
|
req.AddData(rxqueues)
|
|
}
|
|
|
|
if base.Namespace != nil {
|
|
var attr *nl.RtAttr
|
|
switch base.Namespace.(type) {
|
|
case NsPid:
|
|
val := nl.Uint32Attr(uint32(base.Namespace.(NsPid)))
|
|
attr = nl.NewRtAttr(unix.IFLA_NET_NS_PID, val)
|
|
case NsFd:
|
|
val := nl.Uint32Attr(uint32(base.Namespace.(NsFd)))
|
|
attr = nl.NewRtAttr(unix.IFLA_NET_NS_FD, val)
|
|
}
|
|
|
|
req.AddData(attr)
|
|
}
|
|
|
|
if base.Xdp != nil {
|
|
addXdpAttrs(base.Xdp, req)
|
|
}
|
|
|
|
linkInfo := nl.NewRtAttr(unix.IFLA_LINKINFO, nil)
|
|
nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_KIND, nl.NonZeroTerminated(link.Type()))
|
|
|
|
switch link := link.(type) {
|
|
case *Vlan:
|
|
b := make([]byte, 2)
|
|
native.PutUint16(b, uint16(link.VlanId))
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_VLAN_ID, b)
|
|
case *Veth:
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
peer := nl.NewRtAttrChild(data, nl.VETH_INFO_PEER, nil)
|
|
nl.NewIfInfomsgChild(peer, unix.AF_UNSPEC)
|
|
nl.NewRtAttrChild(peer, unix.IFLA_IFNAME, nl.ZeroTerminated(link.PeerName))
|
|
if base.TxQLen >= 0 {
|
|
nl.NewRtAttrChild(peer, unix.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen)))
|
|
}
|
|
if base.MTU > 0 {
|
|
nl.NewRtAttrChild(peer, unix.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU)))
|
|
}
|
|
|
|
case *Vxlan:
|
|
addVxlanAttrs(link, linkInfo)
|
|
case *Bond:
|
|
addBondAttrs(link, linkInfo)
|
|
case *IPVlan:
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPVLAN_MODE, nl.Uint16Attr(uint16(link.Mode)))
|
|
case *Macvlan:
|
|
if link.Mode != MACVLAN_MODE_DEFAULT {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[link.Mode]))
|
|
}
|
|
case *Macvtap:
|
|
if link.Mode != MACVLAN_MODE_DEFAULT {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[link.Mode]))
|
|
}
|
|
case *Gretap:
|
|
addGretapAttrs(link, linkInfo)
|
|
case *Iptun:
|
|
addIptunAttrs(link, linkInfo)
|
|
case *Sittun:
|
|
addSittunAttrs(link, linkInfo)
|
|
case *Gretun:
|
|
addGretunAttrs(link, linkInfo)
|
|
case *Vti:
|
|
addVtiAttrs(link, linkInfo)
|
|
case *Vrf:
|
|
addVrfAttrs(link, linkInfo)
|
|
case *Bridge:
|
|
addBridgeAttrs(link, linkInfo)
|
|
case *GTP:
|
|
addGTPAttrs(link, linkInfo)
|
|
}
|
|
|
|
req.AddData(linkInfo)
|
|
|
|
_, err := req.Execute(unix.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(unix.RTM_DELLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
_, err := req.Execute(unix.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, LinkNotFoundError{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, LinkNotFoundError{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(unix.RTM_GETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
req.AddData(msg)
|
|
|
|
attr := nl.NewRtAttr(unix.IFLA_EXT_MASK, nl.Uint32Attr(nl.RTEXT_FILTER_VF))
|
|
req.AddData(attr)
|
|
|
|
nameData := nl.NewRtAttr(unix.IFLA_IFNAME, nl.ZeroTerminated(name))
|
|
req.AddData(nameData)
|
|
|
|
link, err := execGetLink(req)
|
|
if err == unix.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(unix.RTM_GETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
req.AddData(msg)
|
|
|
|
attr := nl.NewRtAttr(unix.IFLA_EXT_MASK, nl.Uint32Attr(nl.RTEXT_FILTER_VF))
|
|
req.AddData(attr)
|
|
|
|
nameData := nl.NewRtAttr(unix.IFLA_IFALIAS, nl.ZeroTerminated(alias))
|
|
req.AddData(nameData)
|
|
|
|
link, err := execGetLink(req)
|
|
if err == unix.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(unix.RTM_GETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(index)
|
|
req.AddData(msg)
|
|
attr := nl.NewRtAttr(unix.IFLA_EXT_MASK, nl.Uint32Attr(nl.RTEXT_FILTER_VF))
|
|
req.AddData(attr)
|
|
|
|
return execGetLink(req)
|
|
}
|
|
|
|
func execGetLink(req *nl.NetlinkRequest) (Link, error) {
|
|
msgs, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
if err != nil {
|
|
if errno, ok := err.(syscall.Errno); ok {
|
|
if errno == unix.ENODEV {
|
|
return nil, LinkNotFoundError{fmt.Errorf("Link not found")}
|
|
}
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
switch {
|
|
case len(msgs) == 0:
|
|
return nil, LinkNotFoundError{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 *unix.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&unix.IFF_PROMISC != 0 {
|
|
base.Promisc = 1
|
|
}
|
|
var (
|
|
link Link
|
|
stats32 []byte
|
|
stats64 []byte
|
|
linkType string
|
|
)
|
|
for _, attr := range attrs {
|
|
switch attr.Attr.Type {
|
|
case unix.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 "ip6gretap":
|
|
link = &Gretap{}
|
|
case "ipip":
|
|
link = &Iptun{}
|
|
case "sit":
|
|
link = &Sittun{}
|
|
case "gre":
|
|
link = &Gretun{}
|
|
case "ip6gre":
|
|
link = &Gretun{}
|
|
case "vti", "vti6":
|
|
link = &Vti{}
|
|
case "vrf":
|
|
link = &Vrf{}
|
|
case "gtp":
|
|
link = >P{}
|
|
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 "ip6gretap":
|
|
parseGretapData(link, data)
|
|
case "ipip":
|
|
parseIptunData(link, data)
|
|
case "sit":
|
|
parseSittunData(link, data)
|
|
case "gre":
|
|
parseGretunData(link, data)
|
|
case "ip6gre":
|
|
parseGretunData(link, data)
|
|
case "vti", "vti6":
|
|
parseVtiData(link, data)
|
|
case "vrf":
|
|
parseVrfData(link, data)
|
|
case "bridge":
|
|
parseBridgeData(link, data)
|
|
case "gtp":
|
|
parseGTPData(link, data)
|
|
}
|
|
}
|
|
}
|
|
case unix.IFLA_ADDRESS:
|
|
var nonzero bool
|
|
for _, b := range attr.Value {
|
|
if b != 0 {
|
|
nonzero = true
|
|
}
|
|
}
|
|
if nonzero {
|
|
base.HardwareAddr = attr.Value[:]
|
|
}
|
|
case unix.IFLA_IFNAME:
|
|
base.Name = string(attr.Value[:len(attr.Value)-1])
|
|
case unix.IFLA_MTU:
|
|
base.MTU = int(native.Uint32(attr.Value[0:4]))
|
|
case unix.IFLA_LINK:
|
|
base.ParentIndex = int(native.Uint32(attr.Value[0:4]))
|
|
case unix.IFLA_MASTER:
|
|
base.MasterIndex = int(native.Uint32(attr.Value[0:4]))
|
|
case unix.IFLA_TXQLEN:
|
|
base.TxQLen = int(native.Uint32(attr.Value[0:4]))
|
|
case unix.IFLA_IFALIAS:
|
|
base.Alias = string(attr.Value[:len(attr.Value)-1])
|
|
case unix.IFLA_STATS:
|
|
stats32 = attr.Value[:]
|
|
case unix.IFLA_STATS64:
|
|
stats64 = attr.Value[:]
|
|
case unix.IFLA_XDP:
|
|
xdp, err := parseLinkXdp(attr.Value[:])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
base.Xdp = xdp
|
|
case unix.IFLA_PROTINFO | unix.NLA_F_NESTED:
|
|
if hdr != nil && hdr.Type == unix.RTM_NEWLINK &&
|
|
msg.Family == unix.AF_BRIDGE {
|
|
attrs, err := nl.ParseRouteAttr(attr.Value[:])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
base.Protinfo = parseProtinfo(attrs)
|
|
}
|
|
case unix.IFLA_OPERSTATE:
|
|
base.OperState = LinkOperState(uint8(attr.Value[0]))
|
|
case unix.IFLA_LINK_NETNSID:
|
|
base.NetNsID = int(native.Uint32(attr.Value[0:4]))
|
|
case unix.IFLA_VFINFO_LIST:
|
|
data, err := nl.ParseRouteAttr(attr.Value)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
vfs, err := parseVfInfoList(data)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
base.Vfs = vfs
|
|
}
|
|
}
|
|
|
|
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(unix.RTM_GETLINK, unix.NLM_F_DUMP)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
req.AddData(msg)
|
|
attr := nl.NewRtAttr(unix.IFLA_EXT_MASK, nl.Uint32Attr(nl.RTEXT_FILTER_VF))
|
|
req.AddData(attr)
|
|
|
|
msgs, err := req.Execute(unix.NETLINK_ROUTE, unix.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 unix.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 linkSubscribeAt(netns.None(), netns.None(), ch, done, nil, false)
|
|
}
|
|
|
|
// 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 linkSubscribeAt(ns, netns.None(), ch, done, nil, false)
|
|
}
|
|
|
|
// LinkSubscribeOptions contains a set of options to use with
|
|
// LinkSubscribeWithOptions.
|
|
type LinkSubscribeOptions struct {
|
|
Namespace *netns.NsHandle
|
|
ErrorCallback func(error)
|
|
ListExisting bool
|
|
}
|
|
|
|
// LinkSubscribeWithOptions work like LinkSubscribe but enable to
|
|
// provide additional options to modify the behavior. Currently, the
|
|
// namespace can be provided as well as an error callback.
|
|
func LinkSubscribeWithOptions(ch chan<- LinkUpdate, done <-chan struct{}, options LinkSubscribeOptions) error {
|
|
if options.Namespace == nil {
|
|
none := netns.None()
|
|
options.Namespace = &none
|
|
}
|
|
return linkSubscribeAt(*options.Namespace, netns.None(), ch, done, options.ErrorCallback, options.ListExisting)
|
|
}
|
|
|
|
func linkSubscribeAt(newNs, curNs netns.NsHandle, ch chan<- LinkUpdate, done <-chan struct{}, cberr func(error), listExisting bool) error {
|
|
s, err := nl.SubscribeAt(newNs, curNs, unix.NETLINK_ROUTE, unix.RTNLGRP_LINK)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if done != nil {
|
|
go func() {
|
|
<-done
|
|
s.Close()
|
|
}()
|
|
}
|
|
if listExisting {
|
|
req := pkgHandle.newNetlinkRequest(unix.RTM_GETLINK,
|
|
unix.NLM_F_DUMP)
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
req.AddData(msg)
|
|
if err := s.Send(req); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
go func() {
|
|
defer close(ch)
|
|
for {
|
|
msgs, err := s.Receive()
|
|
if err != nil {
|
|
if cberr != nil {
|
|
cberr(err)
|
|
}
|
|
return
|
|
}
|
|
for _, m := range msgs {
|
|
if m.Header.Type == unix.NLMSG_DONE {
|
|
continue
|
|
}
|
|
if m.Header.Type == unix.NLMSG_ERROR {
|
|
native := nl.NativeEndian()
|
|
error := int32(native.Uint32(m.Data[0:4]))
|
|
if error == 0 {
|
|
continue
|
|
}
|
|
if cberr != nil {
|
|
cberr(syscall.Errno(-error))
|
|
}
|
|
return
|
|
}
|
|
ifmsg := nl.DeserializeIfInfomsg(m.Data)
|
|
header := unix.NlMsghdr(m.Header)
|
|
link, err := LinkDeserialize(&header, m.Data)
|
|
if err != nil {
|
|
if cberr != nil {
|
|
cberr(err)
|
|
}
|
|
return
|
|
}
|
|
ch <- LinkUpdate{IfInfomsg: *ifmsg, Header: 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 LinkSetBrProxyArp(link Link, mode bool) error {
|
|
return pkgHandle.LinkSetBrProxyArp(link, mode)
|
|
}
|
|
|
|
func (h *Handle) LinkSetBrProxyArp(link Link, mode bool) error {
|
|
return h.setProtinfoAttr(link, mode, nl.IFLA_BRPORT_PROXYARP)
|
|
}
|
|
|
|
func LinkSetBrProxyArpWiFi(link Link, mode bool) error {
|
|
return pkgHandle.LinkSetBrProxyArpWiFi(link, mode)
|
|
}
|
|
|
|
func (h *Handle) LinkSetBrProxyArpWiFi(link Link, mode bool) error {
|
|
return h.setProtinfoAttr(link, mode, nl.IFLA_BRPORT_PROXYARP_WIFI)
|
|
}
|
|
|
|
func (h *Handle) setProtinfoAttr(link Link, mode bool, attr int) error {
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_BRIDGE)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
br := nl.NewRtAttr(unix.IFLA_PROTINFO|unix.NLA_F_NESTED, nil)
|
|
nl.NewRtAttrChild(br, attr, boolToByte(mode))
|
|
req.AddData(br)
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// LinkSetTxQLen sets the transaction queue length for the link.
|
|
// Equivalent to: `ip link set $link txqlen $qlen`
|
|
func LinkSetTxQLen(link Link, qlen int) error {
|
|
return pkgHandle.LinkSetTxQLen(link, qlen)
|
|
}
|
|
|
|
// LinkSetTxQLen sets the transaction queue length for the link.
|
|
// Equivalent to: `ip link set $link txqlen $qlen`
|
|
func (h *Handle) LinkSetTxQLen(link Link, qlen int) error {
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
|
|
|
|
msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
|
|
msg.Index = int32(base.Index)
|
|
req.AddData(msg)
|
|
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, uint32(qlen))
|
|
|
|
data := nl.NewRtAttr(unix.IFLA_TXQLEN, b)
|
|
req.AddData(data)
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
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_UDP_ZERO_CSUM6_TX:
|
|
vxlan.UDP6ZeroCSumTx = int8(datum.Value[0]) != 0
|
|
case nl.IFLA_VXLAN_UDP_ZERO_CSUM6_RX:
|
|
vxlan.UDP6ZeroCSumRx = int8(datum.Value[0]) != 0
|
|
case nl.IFLA_VXLAN_GBP:
|
|
vxlan.GBP = true
|
|
case nl.IFLA_VXLAN_FLOWBASED:
|
|
vxlan.FlowBased = int8(datum.Value[0]) != 0
|
|
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 := link.(*Bond)
|
|
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
|
|
case nl.IFLA_BOND_AD_ACTOR_SYS_PRIO:
|
|
bond.AdActorSysPrio = int(native.Uint16(data[i].Value[0:2]))
|
|
case nl.IFLA_BOND_AD_USER_PORT_KEY:
|
|
bond.AdUserPortKey = int(native.Uint16(data[i].Value[0:2]))
|
|
case nl.IFLA_BOND_AD_ACTOR_SYSTEM:
|
|
bond.AdActorSystem = net.HardwareAddr(data[i].Value[0:6])
|
|
case nl.IFLA_BOND_TLB_DYNAMIC_LB:
|
|
bond.TlbDynamicLb = int(data[i].Value[0])
|
|
}
|
|
}
|
|
}
|
|
|
|
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 {
|
|
switch datum.Attr.Type {
|
|
case 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
|
|
}
|
|
case nl.IFLA_MACVLAN_MACADDR_COUNT:
|
|
macv.MACAddrs = make([]net.HardwareAddr, 0, int(native.Uint32(datum.Value[0:4])))
|
|
case nl.IFLA_MACVLAN_MACADDR_DATA:
|
|
macs, err := nl.ParseRouteAttr(datum.Value[:])
|
|
if err != nil {
|
|
panic(fmt.Sprintf("failed to ParseRouteAttr for IFLA_MACVLAN_MACADDR_DATA: %v", err))
|
|
}
|
|
for _, macDatum := range macs {
|
|
macv.MACAddrs = append(macv.MACAddrs, net.HardwareAddr(macDatum.Value[0:6]))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// copied from pkg/net_linux.go
|
|
func linkFlags(rawFlags uint32) net.Flags {
|
|
var f net.Flags
|
|
if rawFlags&unix.IFF_UP != 0 {
|
|
f |= net.FlagUp
|
|
}
|
|
if rawFlags&unix.IFF_BROADCAST != 0 {
|
|
f |= net.FlagBroadcast
|
|
}
|
|
if rawFlags&unix.IFF_LOOPBACK != 0 {
|
|
f |= net.FlagLoopback
|
|
}
|
|
if rawFlags&unix.IFF_POINTOPOINT != 0 {
|
|
f |= net.FlagPointToPoint
|
|
}
|
|
if rawFlags&unix.IFF_MULTICAST != 0 {
|
|
f |= net.FlagMulticast
|
|
}
|
|
return f
|
|
}
|
|
|
|
func addGretapAttrs(gretap *Gretap, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
|
|
if gretap.FlowBased {
|
|
// In flow based mode, no other attributes need to be configured
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_COLLECT_METADATA, boolAttr(gretap.FlowBased))
|
|
return
|
|
}
|
|
|
|
if ip := gretap.Local; ip != nil {
|
|
if ip.To4() != nil {
|
|
ip = ip.To4()
|
|
}
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_LOCAL, []byte(ip))
|
|
}
|
|
|
|
if ip := gretap.Remote; ip != nil {
|
|
if ip.To4() != nil {
|
|
ip = ip.To4()
|
|
}
|
|
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)
|
|
case nl.IFLA_GRE_REMOTE:
|
|
gre.Remote = net.IP(datum.Value)
|
|
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])
|
|
case nl.IFLA_GRE_COLLECT_METADATA:
|
|
if len(datum.Value) > 0 {
|
|
gre.FlowBased = int8(datum.Value[0]) != 0
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func addGretunAttrs(gre *Gretun, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
|
|
if ip := gre.Local; ip != nil {
|
|
if ip.To4() != nil {
|
|
ip = ip.To4()
|
|
}
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_LOCAL, []byte(ip))
|
|
}
|
|
|
|
if ip := gre.Remote; ip != nil {
|
|
if ip.To4() != nil {
|
|
ip = ip.To4()
|
|
}
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_REMOTE, []byte(ip))
|
|
}
|
|
|
|
if gre.IKey != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_IKEY, htonl(gre.IKey))
|
|
gre.IFlags |= uint16(nl.GRE_KEY)
|
|
}
|
|
|
|
if gre.OKey != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_OKEY, htonl(gre.OKey))
|
|
gre.OFlags |= uint16(nl.GRE_KEY)
|
|
}
|
|
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_IFLAGS, htons(gre.IFlags))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_OFLAGS, htons(gre.OFlags))
|
|
|
|
if gre.Link != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_LINK, nl.Uint32Attr(gre.Link))
|
|
}
|
|
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_PMTUDISC, nl.Uint8Attr(gre.PMtuDisc))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_TTL, nl.Uint8Attr(gre.Ttl))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_TOS, nl.Uint8Attr(gre.Tos))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_TYPE, nl.Uint16Attr(gre.EncapType))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_FLAGS, nl.Uint16Attr(gre.EncapFlags))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_SPORT, htons(gre.EncapSport))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_DPORT, htons(gre.EncapDport))
|
|
}
|
|
|
|
func parseGretunData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
gre := link.(*Gretun)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_GRE_IKEY:
|
|
gre.IKey = ntohl(datum.Value[0:4])
|
|
case nl.IFLA_GRE_OKEY:
|
|
gre.OKey = ntohl(datum.Value[0:4])
|
|
case nl.IFLA_GRE_LOCAL:
|
|
gre.Local = net.IP(datum.Value)
|
|
case nl.IFLA_GRE_REMOTE:
|
|
gre.Remote = net.IP(datum.Value)
|
|
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])
|
|
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])
|
|
}
|
|
}
|
|
}
|
|
|
|
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(unix.IFLA_XDP|unix.NLA_F_NESTED, nil)
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, uint32(xdp.Fd))
|
|
nl.NewRtAttrChild(attrs, nl.IFLA_XDP_FD, b)
|
|
if xdp.Flags != 0 {
|
|
b := make([]byte, 4)
|
|
native.PutUint32(b, xdp.Flags)
|
|
nl.NewRtAttrChild(attrs, nl.IFLA_XDP_FLAGS, 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
|
|
case nl.IFLA_XDP_FLAGS:
|
|
xdp.Flags = native.Uint32(attr.Value[0:4])
|
|
case nl.IFLA_XDP_PROG_ID:
|
|
xdp.ProgId = native.Uint32(attr.Value[0:4])
|
|
}
|
|
}
|
|
return xdp, nil
|
|
}
|
|
|
|
func addIptunAttrs(iptun *Iptun, linkInfo *nl.RtAttr) {
|
|
if iptun.FlowBased {
|
|
// In flow based mode, no other attributes need to be configured
|
|
nl.NewRtAttrChild(linkInfo, nl.IFLA_IPTUN_COLLECT_METADATA, boolAttr(iptun.FlowBased))
|
|
return
|
|
}
|
|
|
|
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))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_TYPE, nl.Uint16Attr(iptun.EncapType))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_FLAGS, nl.Uint16Attr(iptun.EncapFlags))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_SPORT, htons(iptun.EncapSport))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_DPORT, htons(iptun.EncapDport))
|
|
}
|
|
|
|
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])
|
|
case nl.IFLA_IPTUN_ENCAP_SPORT:
|
|
iptun.EncapSport = ntohs(datum.Value[0:2])
|
|
case nl.IFLA_IPTUN_ENCAP_DPORT:
|
|
iptun.EncapDport = ntohs(datum.Value[0:2])
|
|
case nl.IFLA_IPTUN_ENCAP_TYPE:
|
|
iptun.EncapType = native.Uint16(datum.Value[0:2])
|
|
case nl.IFLA_IPTUN_ENCAP_FLAGS:
|
|
iptun.EncapFlags = native.Uint16(datum.Value[0:2])
|
|
case nl.IFLA_IPTUN_COLLECT_METADATA:
|
|
iptun.FlowBased = int8(datum.Value[0]) != 0
|
|
}
|
|
}
|
|
}
|
|
|
|
func addSittunAttrs(sittun *Sittun, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
|
|
if sittun.Link != 0 {
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_LINK, nl.Uint32Attr(sittun.Link))
|
|
}
|
|
|
|
ip := sittun.Local.To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_LOCAL, []byte(ip))
|
|
}
|
|
|
|
ip = sittun.Remote.To4()
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_REMOTE, []byte(ip))
|
|
}
|
|
|
|
if sittun.Ttl > 0 {
|
|
// Would otherwise fail on 3.10 kernel
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_TTL, nl.Uint8Attr(sittun.Ttl))
|
|
}
|
|
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_TOS, nl.Uint8Attr(sittun.Tos))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_PMTUDISC, nl.Uint8Attr(sittun.PMtuDisc))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_TYPE, nl.Uint16Attr(sittun.EncapType))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_FLAGS, nl.Uint16Attr(sittun.EncapFlags))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_SPORT, htons(sittun.EncapSport))
|
|
nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_DPORT, htons(sittun.EncapDport))
|
|
}
|
|
|
|
func parseSittunData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
sittun := link.(*Sittun)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_IPTUN_LOCAL:
|
|
sittun.Local = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_IPTUN_REMOTE:
|
|
sittun.Remote = net.IP(datum.Value[0:4])
|
|
case nl.IFLA_IPTUN_TTL:
|
|
sittun.Ttl = uint8(datum.Value[0])
|
|
case nl.IFLA_IPTUN_TOS:
|
|
sittun.Tos = uint8(datum.Value[0])
|
|
case nl.IFLA_IPTUN_PMTUDISC:
|
|
sittun.PMtuDisc = uint8(datum.Value[0])
|
|
case nl.IFLA_IPTUN_ENCAP_TYPE:
|
|
sittun.EncapType = native.Uint16(datum.Value[0:2])
|
|
case nl.IFLA_IPTUN_ENCAP_FLAGS:
|
|
sittun.EncapFlags = native.Uint16(datum.Value[0:2])
|
|
case nl.IFLA_IPTUN_ENCAP_SPORT:
|
|
sittun.EncapSport = ntohs(datum.Value[0:2])
|
|
case nl.IFLA_IPTUN_ENCAP_DPORT:
|
|
sittun.EncapDport = ntohs(datum.Value[0:2])
|
|
}
|
|
}
|
|
}
|
|
|
|
func addVtiAttrs(vti *Vti, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
|
|
family := FAMILY_V4
|
|
if vti.Local.To4() == nil {
|
|
family = FAMILY_V6
|
|
}
|
|
|
|
var ip net.IP
|
|
|
|
if family == FAMILY_V4 {
|
|
ip = vti.Local.To4()
|
|
} else {
|
|
ip = vti.Local
|
|
}
|
|
if ip != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_VTI_LOCAL, []byte(ip))
|
|
}
|
|
|
|
if family == FAMILY_V4 {
|
|
ip = vti.Remote.To4()
|
|
} else {
|
|
ip = vti.Remote
|
|
}
|
|
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)
|
|
case nl.IFLA_VTI_REMOTE:
|
|
vti.Remote = net.IP(datum.Value)
|
|
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])
|
|
}
|
|
}
|
|
}
|
|
|
|
func addBridgeAttrs(bridge *Bridge, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
if bridge.MulticastSnooping != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BR_MCAST_SNOOPING, boolToByte(*bridge.MulticastSnooping))
|
|
}
|
|
if bridge.HelloTime != nil {
|
|
nl.NewRtAttrChild(data, nl.IFLA_BR_HELLO_TIME, nl.Uint32Attr(*bridge.HelloTime))
|
|
}
|
|
}
|
|
|
|
func parseBridgeData(bridge Link, data []syscall.NetlinkRouteAttr) {
|
|
br := bridge.(*Bridge)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_BR_HELLO_TIME:
|
|
helloTime := native.Uint32(datum.Value[0:4])
|
|
br.HelloTime = &helloTime
|
|
case nl.IFLA_BR_MCAST_SNOOPING:
|
|
mcastSnooping := datum.Value[0] == 1
|
|
br.MulticastSnooping = &mcastSnooping
|
|
}
|
|
}
|
|
}
|
|
|
|
func addGTPAttrs(gtp *GTP, linkInfo *nl.RtAttr) {
|
|
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
|
|
nl.NewRtAttrChild(data, nl.IFLA_GTP_FD0, nl.Uint32Attr(uint32(gtp.FD0)))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GTP_FD1, nl.Uint32Attr(uint32(gtp.FD1)))
|
|
nl.NewRtAttrChild(data, nl.IFLA_GTP_PDP_HASHSIZE, nl.Uint32Attr(131072))
|
|
if gtp.Role != nl.GTP_ROLE_GGSN {
|
|
nl.NewRtAttrChild(data, nl.IFLA_GTP_ROLE, nl.Uint32Attr(uint32(gtp.Role)))
|
|
}
|
|
}
|
|
|
|
func parseGTPData(link Link, data []syscall.NetlinkRouteAttr) {
|
|
gtp := link.(*GTP)
|
|
for _, datum := range data {
|
|
switch datum.Attr.Type {
|
|
case nl.IFLA_GTP_FD0:
|
|
gtp.FD0 = int(native.Uint32(datum.Value))
|
|
case nl.IFLA_GTP_FD1:
|
|
gtp.FD1 = int(native.Uint32(datum.Value))
|
|
case nl.IFLA_GTP_PDP_HASHSIZE:
|
|
gtp.PDPHashsize = int(native.Uint32(datum.Value))
|
|
case nl.IFLA_GTP_ROLE:
|
|
gtp.Role = int(native.Uint32(datum.Value))
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseVfInfoList(data []syscall.NetlinkRouteAttr) ([]VfInfo, error) {
|
|
var vfs []VfInfo
|
|
|
|
for i, element := range data {
|
|
if element.Attr.Type != nl.IFLA_VF_INFO {
|
|
return nil, fmt.Errorf("Incorrect element type in vf info list: %d", element.Attr.Type)
|
|
}
|
|
vfAttrs, err := nl.ParseRouteAttr(element.Value)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
vfs = append(vfs, parseVfInfo(vfAttrs, i))
|
|
}
|
|
return vfs, nil
|
|
}
|
|
|
|
func parseVfInfo(data []syscall.NetlinkRouteAttr, id int) VfInfo {
|
|
vf := VfInfo{ID: id}
|
|
for _, element := range data {
|
|
switch element.Attr.Type {
|
|
case nl.IFLA_VF_MAC:
|
|
mac := nl.DeserializeVfMac(element.Value[:])
|
|
vf.Mac = mac.Mac[:6]
|
|
case nl.IFLA_VF_VLAN:
|
|
vl := nl.DeserializeVfVlan(element.Value[:])
|
|
vf.Vlan = int(vl.Vlan)
|
|
vf.Qos = int(vl.Qos)
|
|
case nl.IFLA_VF_TX_RATE:
|
|
txr := nl.DeserializeVfTxRate(element.Value[:])
|
|
vf.TxRate = int(txr.Rate)
|
|
case nl.IFLA_VF_SPOOFCHK:
|
|
sp := nl.DeserializeVfSpoofchk(element.Value[:])
|
|
vf.Spoofchk = sp.Setting != 0
|
|
case nl.IFLA_VF_LINK_STATE:
|
|
ls := nl.DeserializeVfLinkState(element.Value[:])
|
|
vf.LinkState = ls.LinkState
|
|
}
|
|
}
|
|
return vf
|
|
}
|
|
|
|
// LinkSetBondSlave add slave to bond link via ioctl interface.
|
|
func LinkSetBondSlave(link Link, master *Bond) error {
|
|
fd, err := getSocketUDP()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer syscall.Close(fd)
|
|
|
|
ifreq := newIocltSlaveReq(link.Attrs().Name, master.Attrs().Name)
|
|
|
|
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), unix.SIOCBONDENSLAVE, uintptr(unsafe.Pointer(ifreq)))
|
|
if errno != 0 {
|
|
return fmt.Errorf("Failed to enslave %q to %q, errno=%v", link.Attrs().Name, master.Attrs().Name, errno)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// VethPeerIndex get veth peer index.
|
|
func VethPeerIndex(link *Veth) (int, error) {
|
|
fd, err := getSocketUDP()
|
|
if err != nil {
|
|
return -1, err
|
|
}
|
|
defer syscall.Close(fd)
|
|
|
|
ifreq, sSet := newIocltStringSetReq(link.Name)
|
|
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), SIOCETHTOOL, uintptr(unsafe.Pointer(ifreq)))
|
|
if errno != 0 {
|
|
return -1, fmt.Errorf("SIOCETHTOOL request for %q failed, errno=%v", link.Attrs().Name, errno)
|
|
}
|
|
|
|
gstrings := ðtoolGstrings{
|
|
cmd: ETHTOOL_GSTRINGS,
|
|
stringSet: ETH_SS_STATS,
|
|
length: sSet.data[0],
|
|
}
|
|
ifreq.Data = uintptr(unsafe.Pointer(gstrings))
|
|
_, _, errno = syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), SIOCETHTOOL, uintptr(unsafe.Pointer(ifreq)))
|
|
if errno != 0 {
|
|
return -1, fmt.Errorf("SIOCETHTOOL request for %q failed, errno=%v", link.Attrs().Name, errno)
|
|
}
|
|
|
|
stats := ðtoolStats{
|
|
cmd: ETHTOOL_GSTATS,
|
|
nStats: gstrings.length,
|
|
}
|
|
ifreq.Data = uintptr(unsafe.Pointer(stats))
|
|
_, _, errno = syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), SIOCETHTOOL, uintptr(unsafe.Pointer(ifreq)))
|
|
if errno != 0 {
|
|
return -1, fmt.Errorf("SIOCETHTOOL request for %q failed, errno=%v", link.Attrs().Name, errno)
|
|
}
|
|
return int(stats.data[0]), nil
|
|
}
|