Vendoring netlink library

Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>

vendor.conf

@@ -42,7 +42,7 @@ github.com/hashicorp/go-multierror fcdddc395df1ddf4247c69bd436e84cfa0733f7e
 github.com/hashicorp/serf 598c54895cc5a7b1a24a398d635e8c0ea0959870
 github.com/docker/libkv 1d8431073ae03cdaedb198a89722f3aab6d418ef
 github.com/vishvananda/netns 604eaf189ee867d8c147fafc28def2394e878d25
-github.com/vishvananda/netlink bd6d5de5ccef2d66b0a26177928d0d8895d7f969
+github.com/vishvananda/netlink b2de5d10e38ecce8607e6b438b6d174f389a004e
 github.com/BurntSushi/toml f706d00e3de6abe700c994cdd545a1a4915af060
 github.com/samuel/go-zookeeper d0e0d8e11f318e000a8cc434616d69e329edc374
 github.com/deckarep/golang-set ef32fa3046d9f249d399f98ebaf9be944430fd1d

vendor/github.com/vishvananda/netlink/README.md

@@ -38,15 +38,18 @@ Add a new bridge and add eth1 into it:
 package main
 
 import (
-    "net"
+    "fmt"
     "github.com/vishvananda/netlink"
 )
 
 func main() {
     la := netlink.NewLinkAttrs()
     la.Name = "foo"
-    mybridge := &netlink.Bridge{la}}
-    _ := netlink.LinkAdd(mybridge)
+    mybridge := &netlink.Bridge{LinkAttrs: la}
+    err := netlink.LinkAdd(mybridge)
+    if err != nil  {
+        fmt.Printf("could not add %s: %v\n", la.Name, err)
+    }
     eth1, _ := netlink.LinkByName("eth1")
     netlink.LinkSetMaster(eth1, mybridge)
 }
@@ -63,7 +66,6 @@ Add a new ip address to loopback:
 package main
 
 import (
-    "net"
     "github.com/vishvananda/netlink"
 )
 

vendor/github.com/vishvananda/netlink/addr_linux.go

@@ -2,7 +2,6 @@ package netlink
 
 import (
 	"fmt"
-	"log"
 	"net"
 	"strings"
 	"syscall"
@@ -65,7 +64,7 @@ func (h *Handle) addrHandle(link Link, addr *Addr, req *nl.NetlinkRequest) error
 	msg := nl.NewIfAddrmsg(family)
 	msg.Index = uint32(base.Index)
 	msg.Scope = uint8(addr.Scope)
-	prefixlen, _ := addr.Mask.Size()
+	prefixlen, masklen := addr.Mask.Size()
 	msg.Prefixlen = uint8(prefixlen)
 	req.AddData(msg)
 
@@ -103,9 +102,14 @@ func (h *Handle) addrHandle(link Link, addr *Addr, req *nl.NetlinkRequest) error
 		}
 	}
 
-	if addr.Broadcast != nil {
-		req.AddData(nl.NewRtAttr(syscall.IFA_BROADCAST, addr.Broadcast))
+	if addr.Broadcast == nil {
+		calcBroadcast := make(net.IP, masklen/8)
+		for i := range localAddrData {
+			calcBroadcast[i] = localAddrData[i] | ^addr.Mask[i]
+		}
+		addr.Broadcast = calcBroadcast
 	}
+	req.AddData(nl.NewRtAttr(syscall.IFA_BROADCAST, addr.Broadcast))
 
 	if addr.Label != "" {
 		labelData := nl.NewRtAttr(syscall.IFA_LABEL, nl.ZeroTerminated(addr.Label))
@@ -232,16 +236,34 @@ type AddrUpdate struct {
 // AddrSubscribe takes a chan down which notifications will be sent
 // when addresses change.  Close the 'done' chan to stop subscription.
 func AddrSubscribe(ch chan<- AddrUpdate, done <-chan struct{}) error {
-	return addrSubscribe(netns.None(), netns.None(), ch, done)
+	return addrSubscribeAt(netns.None(), netns.None(), ch, done, nil)
 }
 
 // AddrSubscribeAt works like AddrSubscribe plus it allows the caller
 // to choose the network namespace in which to subscribe (ns).
 func AddrSubscribeAt(ns netns.NsHandle, ch chan<- AddrUpdate, done <-chan struct{}) error {
-	return addrSubscribe(ns, netns.None(), ch, done)
+	return addrSubscribeAt(ns, netns.None(), ch, done, nil)
+}
+
+// AddrSubscribeOptions contains a set of options to use with
+// AddrSubscribeWithOptions.
+type AddrSubscribeOptions struct {
+	Namespace     *netns.NsHandle
+	ErrorCallback func(error)
 }
 
-func addrSubscribe(newNs, curNs netns.NsHandle, ch chan<- AddrUpdate, done <-chan struct{}) error {
+// AddrSubscribeWithOptions work like AddrSubscribe but enable to
+// provide additional options to modify the behavior. Currently, the
+// namespace can be provided as well as an error callback.
+func AddrSubscribeWithOptions(ch chan<- AddrUpdate, done <-chan struct{}, options AddrSubscribeOptions) error {
+	if options.Namespace == nil {
+		none := netns.None()
+		options.Namespace = &none
+	}
+	return addrSubscribeAt(*options.Namespace, netns.None(), ch, done, options.ErrorCallback)
+}
+
+func addrSubscribeAt(newNs, curNs netns.NsHandle, ch chan<- AddrUpdate, done <-chan struct{}, cberr func(error)) error {
 	s, err := nl.SubscribeAt(newNs, curNs, syscall.NETLINK_ROUTE, syscall.RTNLGRP_IPV4_IFADDR, syscall.RTNLGRP_IPV6_IFADDR)
 	if err != nil {
 		return err
@@ -257,20 +279,26 @@ func addrSubscribe(newNs, curNs netns.NsHandle, ch chan<- AddrUpdate, done <-cha
 		for {
 			msgs, err := s.Receive()
 			if err != nil {
-				log.Printf("netlink.AddrSubscribe: Receive() error: %v", err)
+				if cberr != nil {
+					cberr(err)
+				}
 				return
 			}
 			for _, m := range msgs {
 				msgType := m.Header.Type
 				if msgType != syscall.RTM_NEWADDR && msgType != syscall.RTM_DELADDR {
-					log.Printf("netlink.AddrSubscribe: bad message type: %d", msgType)
-					continue
+					if cberr != nil {
+						cberr(fmt.Errorf("bad message type: %d", msgType))
+					}
+					return
 				}
 
 				addr, _, ifindex, err := parseAddr(m.Data)
 				if err != nil {
-					log.Printf("netlink.AddrSubscribe: could not parse address: %v", err)
-					continue
+					if cberr != nil {
+						cberr(fmt.Errorf("could not parse address: %v", err))
+					}
+					return
 				}
 
 				ch <- AddrUpdate{LinkAddress: *addr.IPNet,

vendor/github.com/vishvananda/netlink/bridge_linux.go

@@ -0,0 +1,115 @@
+package netlink
+
+import (
+	"fmt"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// BridgeVlanList gets a map of device id to bridge vlan infos.
+// Equivalent to: `bridge vlan show`
+func BridgeVlanList() (map[int32][]*nl.BridgeVlanInfo, error) {
+	return pkgHandle.BridgeVlanList()
+}
+
+// BridgeVlanList gets a map of device id to bridge vlan infos.
+// Equivalent to: `bridge vlan show`
+func (h *Handle) BridgeVlanList() (map[int32][]*nl.BridgeVlanInfo, error) {
+	req := h.newNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_DUMP)
+	msg := nl.NewIfInfomsg(syscall.AF_BRIDGE)
+	req.AddData(msg)
+	req.AddData(nl.NewRtAttr(nl.IFLA_EXT_MASK, nl.Uint32Attr(uint32(nl.RTEXT_FILTER_BRVLAN))))
+
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWLINK)
+	if err != nil {
+		return nil, err
+	}
+	ret := make(map[int32][]*nl.BridgeVlanInfo)
+	for _, m := range msgs {
+		msg := nl.DeserializeIfInfomsg(m)
+
+		attrs, err := nl.ParseRouteAttr(m[msg.Len():])
+		if err != nil {
+			return nil, err
+		}
+		for _, attr := range attrs {
+			switch attr.Attr.Type {
+			case nl.IFLA_AF_SPEC:
+				//nested attr
+				nestAttrs, err := nl.ParseRouteAttr(attr.Value)
+				if err != nil {
+					return nil, fmt.Errorf("failed to parse nested attr %v", err)
+				}
+				for _, nestAttr := range nestAttrs {
+					switch nestAttr.Attr.Type {
+					case nl.IFLA_BRIDGE_VLAN_INFO:
+						vlanInfo := nl.DeserializeBridgeVlanInfo(nestAttr.Value)
+						ret[msg.Index] = append(ret[msg.Index], vlanInfo)
+					}
+				}
+			}
+		}
+	}
+	return ret, nil
+}
+
+// BridgeVlanAdd adds a new vlan filter entry
+// Equivalent to: `bridge vlan add dev DEV vid VID [ pvid ] [ untagged ] [ self ] [ master ]`
+func BridgeVlanAdd(link Link, vid uint16, pvid, untagged, self, master bool) error {
+	return pkgHandle.BridgeVlanAdd(link, vid, pvid, untagged, self, master)
+}
+
+// BridgeVlanAdd adds a new vlan filter entry
+// Equivalent to: `bridge vlan add dev DEV vid VID [ pvid ] [ untagged ] [ self ] [ master ]`
+func (h *Handle) BridgeVlanAdd(link Link, vid uint16, pvid, untagged, self, master bool) error {
+	return h.bridgeVlanModify(syscall.RTM_SETLINK, link, vid, pvid, untagged, self, master)
+}
+
+// BridgeVlanDel adds a new vlan filter entry
+// Equivalent to: `bridge vlan del dev DEV vid VID [ pvid ] [ untagged ] [ self ] [ master ]`
+func BridgeVlanDel(link Link, vid uint16, pvid, untagged, self, master bool) error {
+	return pkgHandle.BridgeVlanDel(link, vid, pvid, untagged, self, master)
+}
+
+// BridgeVlanDel adds a new vlan filter entry
+// Equivalent to: `bridge vlan del dev DEV vid VID [ pvid ] [ untagged ] [ self ] [ master ]`
+func (h *Handle) BridgeVlanDel(link Link, vid uint16, pvid, untagged, self, master bool) error {
+	return h.bridgeVlanModify(syscall.RTM_DELLINK, link, vid, pvid, untagged, self, master)
+}
+
+func (h *Handle) bridgeVlanModify(cmd int, link Link, vid uint16, pvid, untagged, self, master bool) error {
+	base := link.Attrs()
+	h.ensureIndex(base)
+	req := h.newNetlinkRequest(cmd, syscall.NLM_F_ACK)
+
+	msg := nl.NewIfInfomsg(syscall.AF_BRIDGE)
+	msg.Index = int32(base.Index)
+	req.AddData(msg)
+
+	br := nl.NewRtAttr(nl.IFLA_AF_SPEC, nil)
+	var flags uint16
+	if self {
+		flags |= nl.BRIDGE_FLAGS_SELF
+	}
+	if master {
+		flags |= nl.BRIDGE_FLAGS_MASTER
+	}
+	if flags > 0 {
+		nl.NewRtAttrChild(br, nl.IFLA_BRIDGE_FLAGS, nl.Uint16Attr(flags))
+	}
+	vlanInfo := &nl.BridgeVlanInfo{Vid: vid}
+	if pvid {
+		vlanInfo.Flags |= nl.BRIDGE_VLAN_INFO_PVID
+	}
+	if untagged {
+		vlanInfo.Flags |= nl.BRIDGE_VLAN_INFO_UNTAGGED
+	}
+	nl.NewRtAttrChild(br, nl.IFLA_BRIDGE_VLAN_INFO, vlanInfo.Serialize())
+	req.AddData(br)
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	if err != nil {
+		return err
+	}
+	return nil
+}

vendor/github.com/vishvananda/netlink/conntrack_linux.go

@@ -22,7 +22,11 @@ const (
 	// https://github.com/torvalds/linux/blob/master/include/uapi/linux/netfilter/nfnetlink.h -> #define NFNL_SUBSYS_CTNETLINK_EXP 2
 	ConntrackExpectTable = 2
 )
-
+const (
+	// For Parsing Mark
+	TCP_PROTO = 6
+	UDP_PROTO = 17
+)
 const (
 	// backward compatibility with golang 1.6 which does not have io.SeekCurrent
 	seekCurrent = 1
@@ -56,7 +60,7 @@ func ConntrackTableFlush(table ConntrackTableType) error {
 
 // ConntrackDeleteFilter deletes entries on the specified table on the base of the filter
 // conntrack -D [table] parameters         Delete conntrack or expectation
-func ConntrackDeleteFilter(table ConntrackTableType, family InetFamily, filter *ConntrackFilter) (uint, error) {
+func ConntrackDeleteFilter(table ConntrackTableType, family InetFamily, filter CustomConntrackFilter) (uint, error) {
 	return pkgHandle.ConntrackDeleteFilter(table, family, filter)
 }
 
@@ -88,7 +92,7 @@ func (h *Handle) ConntrackTableFlush(table ConntrackTableType) error {
 
 // ConntrackDeleteFilter deletes entries on the specified table on the base of the filter using the netlink handle passed
 // conntrack -D [table] parameters         Delete conntrack or expectation
-func (h *Handle) ConntrackDeleteFilter(table ConntrackTableType, family InetFamily, filter *ConntrackFilter) (uint, error) {
+func (h *Handle) ConntrackDeleteFilter(table ConntrackTableType, family InetFamily, filter CustomConntrackFilter) (uint, error) {
 	res, err := h.dumpConntrackTable(table, family)
 	if err != nil {
 		return 0, err
@@ -142,15 +146,16 @@ type ConntrackFlow struct {
 	FamilyType uint8
 	Forward    ipTuple
 	Reverse    ipTuple
+	Mark       uint32
 }
 
 func (s *ConntrackFlow) String() string {
 	// conntrack cmd output:
-	// udp      17 src=127.0.0.1 dst=127.0.0.1 sport=4001 dport=1234 [UNREPLIED] src=127.0.0.1 dst=127.0.0.1 sport=1234 dport=4001
-	return fmt.Sprintf("%s\t%d src=%s dst=%s sport=%d dport=%d\tsrc=%s dst=%s sport=%d dport=%d",
+	// udp      17 src=127.0.0.1 dst=127.0.0.1 sport=4001 dport=1234 [UNREPLIED] src=127.0.0.1 dst=127.0.0.1 sport=1234 dport=4001 mark=0
+	return fmt.Sprintf("%s\t%d src=%s dst=%s sport=%d dport=%d\tsrc=%s dst=%s sport=%d dport=%d mark=%d",
 		nl.L4ProtoMap[s.Forward.Protocol], s.Forward.Protocol,
 		s.Forward.SrcIP.String(), s.Forward.DstIP.String(), s.Forward.SrcPort, s.Forward.DstPort,
-		s.Reverse.SrcIP.String(), s.Reverse.DstIP.String(), s.Reverse.SrcPort, s.Reverse.DstPort)
+		s.Reverse.SrcIP.String(), s.Reverse.DstIP.String(), s.Reverse.SrcPort, s.Reverse.DstPort, s.Mark)
 }
 
 // This method parse the ip tuple structure
@@ -160,7 +165,7 @@ func (s *ConntrackFlow) String() string {
 // <len, NLA_F_NESTED|nl.CTA_TUPLE_PROTO, 1 byte for the protocol, 3 bytes of padding>
 // <len, CTA_PROTO_SRC_PORT, 2 bytes for the source port, 2 bytes of padding>
 // <len, CTA_PROTO_DST_PORT, 2 bytes for the source port, 2 bytes of padding>
-func parseIpTuple(reader *bytes.Reader, tpl *ipTuple) {
+func parseIpTuple(reader *bytes.Reader, tpl *ipTuple) uint8 {
 	for i := 0; i < 2; i++ {
 		_, t, _, v := parseNfAttrTLV(reader)
 		switch t {
@@ -189,6 +194,7 @@ func parseIpTuple(reader *bytes.Reader, tpl *ipTuple) {
 		// Skip some padding 2 byte
 		reader.Seek(2, seekCurrent)
 	}
+	return tpl.Protocol
 }
 
 func parseNfAttrTLV(r *bytes.Reader) (isNested bool, attrType, len uint16, value []byte) {
@@ -216,6 +222,7 @@ func parseBERaw16(r *bytes.Reader, v *uint16) {
 
 func parseRawData(data []byte) *ConntrackFlow {
 	s := &ConntrackFlow{}
+	var proto uint8
 	// First there is the Nfgenmsg header
 	// consume only the family field
 	reader := bytes.NewReader(data)
@@ -234,7 +241,7 @@ func parseRawData(data []byte) *ConntrackFlow {
 		nested, t, l := parseNfAttrTL(reader)
 		if nested && t == nl.CTA_TUPLE_ORIG {
 			if nested, t, _ = parseNfAttrTL(reader); nested && t == nl.CTA_TUPLE_IP {
-				parseIpTuple(reader, &s.Forward)
+				proto = parseIpTuple(reader, &s.Forward)
 			}
 		} else if nested && t == nl.CTA_TUPLE_REPLY {
 			if nested, t, _ = parseNfAttrTL(reader); nested && t == nl.CTA_TUPLE_IP {
@@ -248,7 +255,19 @@ func parseRawData(data []byte) *ConntrackFlow {
 			}
 		}
 	}
-
+	if proto == TCP_PROTO {
+		reader.Seek(64, seekCurrent)
+		_, t, _, v := parseNfAttrTLV(reader)
+		if t == nl.CTA_MARK {
+			s.Mark = uint32(v[3])
+		}
+	} else if proto == UDP_PROTO {
+		reader.Seek(16, seekCurrent)
+		_, t, _, v := parseNfAttrTLV(reader)
+		if t == nl.CTA_MARK {
+			s.Mark = uint32(v[3])
+		}
+	}
 	return s
 }
 
@@ -290,6 +309,12 @@ const (
 	ConntrackNatAnyIP         // -any-nat ip    Source or destination NAT ip
 )
 
+type CustomConntrackFilter interface {
+	// MatchConntrackFlow applies the filter to the flow and returns true if the flow matches
+	// the filter or false otherwise
+	MatchConntrackFlow(flow *ConntrackFlow) bool
+}
+
 type ConntrackFilter struct {
 	ipFilter map[ConntrackFilterType]net.IP
 }
@@ -342,3 +367,5 @@ func (f *ConntrackFilter) MatchConntrackFlow(flow *ConntrackFlow) bool {
 
 	return match
 }
+
+var _ CustomConntrackFilter = (*ConntrackFilter)(nil)

vendor/github.com/vishvananda/netlink/filter.go

@@ -2,8 +2,6 @@ package netlink
 
 import (
 	"fmt"
-
-	"github.com/vishvananda/netlink/nl"
 )
 
 type Filter interface {
@@ -184,14 +182,6 @@ func NewMirredAction(redirIndex int) *MirredAction {
 	}
 }
 
-// Constants used in TcU32Sel.Flags.
-const (
-	TC_U32_TERMINAL  = nl.TC_U32_TERMINAL
-	TC_U32_OFFSET    = nl.TC_U32_OFFSET
-	TC_U32_VAROFFSET = nl.TC_U32_VAROFFSET
-	TC_U32_EAT       = nl.TC_U32_EAT
-)
-
 // Sel of the U32 filters that contains multiple TcU32Key. This is the copy
 // and the frontend representation of nl.TcU32Sel. It is serialized into canonical
 // nl.TcU32Sel with the appropriate endianness.

vendor/github.com/vishvananda/netlink/filter_linux.go

@@ -11,6 +11,14 @@ import (
 	"github.com/vishvananda/netlink/nl"
 )
 
+// Constants used in TcU32Sel.Flags.
+const (
+	TC_U32_TERMINAL  = nl.TC_U32_TERMINAL
+	TC_U32_OFFSET    = nl.TC_U32_OFFSET
+	TC_U32_VAROFFSET = nl.TC_U32_VAROFFSET
+	TC_U32_EAT       = nl.TC_U32_EAT
+)
+
 // Fw filter filters on firewall marks
 // NOTE: this is in filter_linux because it refers to nl.TcPolice which
 //       is defined in nl/tc_linux.go
@@ -128,9 +136,11 @@ func (h *Handle) FilterAdd(filter Filter) error {
 	req.AddData(nl.NewRtAttr(nl.TCA_KIND, nl.ZeroTerminated(filter.Type())))
 
 	options := nl.NewRtAttr(nl.TCA_OPTIONS, nil)
-	if u32, ok := filter.(*U32); ok {
+
+	switch filter := filter.(type) {
+	case *U32:
 		// Convert TcU32Sel into nl.TcU32Sel as it is without copy.
-		sel := (*nl.TcU32Sel)(unsafe.Pointer(u32.Sel))
+		sel := (*nl.TcU32Sel)(unsafe.Pointer(filter.Sel))
 		if sel == nil {
 			// match all
 			sel = &nl.TcU32Sel{
@@ -158,56 +168,56 @@ func (h *Handle) FilterAdd(filter Filter) error {
 		}
 		sel.Nkeys = uint8(len(sel.Keys))
 		nl.NewRtAttrChild(options, nl.TCA_U32_SEL, sel.Serialize())
-		if u32.ClassId != 0 {
-			nl.NewRtAttrChild(options, nl.TCA_U32_CLASSID, nl.Uint32Attr(u32.ClassId))
+		if filter.ClassId != 0 {
+			nl.NewRtAttrChild(options, nl.TCA_U32_CLASSID, nl.Uint32Attr(filter.ClassId))
 		}
 		actionsAttr := nl.NewRtAttrChild(options, nl.TCA_U32_ACT, nil)
 		// backwards compatibility
-		if u32.RedirIndex != 0 {
-			u32.Actions = append([]Action{NewMirredAction(u32.RedirIndex)}, u32.Actions...)
+		if filter.RedirIndex != 0 {
+			filter.Actions = append([]Action{NewMirredAction(filter.RedirIndex)}, filter.Actions...)
 		}
-		if err := EncodeActions(actionsAttr, u32.Actions); err != nil {
+		if err := EncodeActions(actionsAttr, filter.Actions); err != nil {
 			return err
 		}
-	} else if fw, ok := filter.(*Fw); ok {
-		if fw.Mask != 0 {
+	case *Fw:
+		if filter.Mask != 0 {
 			b := make([]byte, 4)
-			native.PutUint32(b, fw.Mask)
+			native.PutUint32(b, filter.Mask)
 			nl.NewRtAttrChild(options, nl.TCA_FW_MASK, b)
 		}
-		if fw.InDev != "" {
-			nl.NewRtAttrChild(options, nl.TCA_FW_INDEV, nl.ZeroTerminated(fw.InDev))
+		if filter.InDev != "" {
+			nl.NewRtAttrChild(options, nl.TCA_FW_INDEV, nl.ZeroTerminated(filter.InDev))
 		}
-		if (fw.Police != nl.TcPolice{}) {
+		if (filter.Police != nl.TcPolice{}) {
 
 			police := nl.NewRtAttrChild(options, nl.TCA_FW_POLICE, nil)
-			nl.NewRtAttrChild(police, nl.TCA_POLICE_TBF, fw.Police.Serialize())
-			if (fw.Police.Rate != nl.TcRateSpec{}) {
-				payload := SerializeRtab(fw.Rtab)
+			nl.NewRtAttrChild(police, nl.TCA_POLICE_TBF, filter.Police.Serialize())
+			if (filter.Police.Rate != nl.TcRateSpec{}) {
+				payload := SerializeRtab(filter.Rtab)
 				nl.NewRtAttrChild(police, nl.TCA_POLICE_RATE, payload)
 			}
-			if (fw.Police.PeakRate != nl.TcRateSpec{}) {
-				payload := SerializeRtab(fw.Ptab)
+			if (filter.Police.PeakRate != nl.TcRateSpec{}) {
+				payload := SerializeRtab(filter.Ptab)
 				nl.NewRtAttrChild(police, nl.TCA_POLICE_PEAKRATE, payload)
 			}
 		}
-		if fw.ClassId != 0 {
+		if filter.ClassId != 0 {
 			b := make([]byte, 4)
-			native.PutUint32(b, fw.ClassId)
+			native.PutUint32(b, filter.ClassId)
 			nl.NewRtAttrChild(options, nl.TCA_FW_CLASSID, b)
 		}
-	} else if bpf, ok := filter.(*BpfFilter); ok {
+	case *BpfFilter:
 		var bpfFlags uint32
-		if bpf.ClassId != 0 {
-			nl.NewRtAttrChild(options, nl.TCA_BPF_CLASSID, nl.Uint32Attr(bpf.ClassId))
+		if filter.ClassId != 0 {
+			nl.NewRtAttrChild(options, nl.TCA_BPF_CLASSID, nl.Uint32Attr(filter.ClassId))
 		}
-		if bpf.Fd >= 0 {
-			nl.NewRtAttrChild(options, nl.TCA_BPF_FD, nl.Uint32Attr((uint32(bpf.Fd))))
+		if filter.Fd >= 0 {
+			nl.NewRtAttrChild(options, nl.TCA_BPF_FD, nl.Uint32Attr((uint32(filter.Fd))))
 		}
-		if bpf.Name != "" {
-			nl.NewRtAttrChild(options, nl.TCA_BPF_NAME, nl.ZeroTerminated(bpf.Name))
+		if filter.Name != "" {
+			nl.NewRtAttrChild(options, nl.TCA_BPF_NAME, nl.ZeroTerminated(filter.Name))
 		}
-		if bpf.DirectAction {
+		if filter.DirectAction {
 			bpfFlags |= nl.TCA_BPF_FLAG_ACT_DIRECT
 		}
 		nl.NewRtAttrChild(options, nl.TCA_BPF_FLAGS, nl.Uint32Attr(bpfFlags))

vendor/github.com/vishvananda/netlink/handle_linux.go

@@ -45,12 +45,27 @@ func (h *Handle) SetSocketTimeout(to time.Duration) error {
 	}
 	tv := syscall.NsecToTimeval(to.Nanoseconds())
 	for _, sh := range h.sockets {
-		fd := sh.Socket.GetFd()
-		err := syscall.SetsockoptTimeval(fd, syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, &tv)
-		if err != nil {
+		if err := sh.Socket.SetSendTimeout(&tv); err != nil {
 			return err
 		}
-		err = syscall.SetsockoptTimeval(fd, syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, &tv)
+		if err := sh.Socket.SetReceiveTimeout(&tv); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// SetSocketReceiveBufferSize sets the receive buffer size for each
+// socket in the netlink handle. The maximum value is capped by
+// /proc/sys/net/core/rmem_max.
+func (h *Handle) SetSocketReceiveBufferSize(size int, force bool) error {
+	opt := syscall.SO_RCVBUF
+	if force {
+		opt = syscall.SO_RCVBUFFORCE
+	}
+	for _, sh := range h.sockets {
+		fd := sh.Socket.GetFd()
+		err := syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, opt, size)
 		if err != nil {
 			return err
 		}
@@ -58,6 +73,24 @@ func (h *Handle) SetSocketTimeout(to time.Duration) error {
 	return nil
 }
 
+// GetSocketReceiveBufferSize gets the receiver buffer size for each
+// socket in the netlink handle. The retrieved value should be the
+// double to the one set for SetSocketReceiveBufferSize.
+func (h *Handle) GetSocketReceiveBufferSize() ([]int, error) {
+	results := make([]int, len(h.sockets))
+	i := 0
+	for _, sh := range h.sockets {
+		fd := sh.Socket.GetFd()
+		size, err := syscall.GetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_RCVBUF)
+		if err != nil {
+			return nil, err
+		}
+		results[i] = size
+		i++
+	}
+	return results, nil
+}
+
 // NewHandle returns a netlink handle on the network namespace
 // specified by ns. If ns=netns.None(), current network namespace
 // will be assumed

vendor/github.com/vishvananda/netlink/handle_unspecified.go

@@ -145,6 +145,10 @@ func (h *Handle) LinkSetFlood(link Link, mode bool) error {
 	return ErrNotImplemented
 }
 
+func (h *Handle) LinkSetTxQLen(link Link, qlen int) error {
+	return ErrNotImplemented
+}
+
 func (h *Handle) setProtinfoAttr(link Link, mode bool, attr int) error {
 	return ErrNotImplemented
 }

vendor/github.com/vishvananda/netlink/link.go

@@ -37,6 +37,7 @@ type LinkAttrs struct {
 	EncapType    string
 	Protinfo     *Protinfo
 	OperState    LinkOperState
+	NetNsID      int
 }
 
 // LinkOperState represents the values of the IFLA_OPERSTATE link
@@ -171,6 +172,7 @@ type LinkXdp struct {
 	Fd       int
 	Attached bool
 	Flags    uint32
+	ProgId   uint32
 }
 
 // Device links cannot be created via netlink. These links
@@ -339,6 +341,7 @@ type Vxlan struct {
 	UDPCSum      bool
 	NoAge        bool
 	GBP          bool
+	FlowBased    bool
 	Age          int
 	Limit        int
 	Port         int
@@ -684,6 +687,7 @@ type Gretap struct {
 	EncapType  uint16
 	EncapFlags uint16
 	Link       uint32
+	FlowBased  bool
 }
 
 func (gretap *Gretap) Attrs() *LinkAttrs {
@@ -729,6 +733,28 @@ func (iptun *Vti) Type() string {
 	return "vti"
 }
 
+type Gretun struct {
+	LinkAttrs
+	Link     uint32
+	IFlags   uint16
+	OFlags   uint16
+	IKey     uint32
+	OKey     uint32
+	Local    net.IP
+	Remote   net.IP
+	Ttl      uint8
+	Tos      uint8
+	PMtuDisc uint8
+}
+
+func (gretun *Gretun) Attrs() *LinkAttrs {
+	return &gretun.LinkAttrs
+}
+
+func (gretun *Gretun) Type() string {
+	return "gre"
+}
+
 type Vrf struct {
 	LinkAttrs
 	Table uint32

vendor/github.com/vishvananda/netlink/link_linux.go

@@ -379,6 +379,74 @@ func (h *Handle) LinkSetVfTxRate(link Link, vf, rate int) error {
 	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(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
+
+	msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
+	msg.Index = int32(base.Index)
+	req.AddData(msg)
+
+	data := nl.NewRtAttr(nl.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(syscall.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(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
+
+	msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
+	msg.Index = int32(base.Index)
+	req.AddData(msg)
+
+	data := nl.NewRtAttr(nl.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(syscall.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 {
@@ -500,6 +568,12 @@ func (h *Handle) LinkSetNsFd(link Link, fd int) error {
 // 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(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
@@ -508,7 +582,7 @@ func LinkSetXdpFd(link Link, fd int) error {
 	msg.Index = int32(base.Index)
 	req.AddData(msg)
 
-	addXdpAttrs(&LinkXdp{Fd: fd}, req)
+	addXdpAttrs(&LinkXdp{Fd: fd, Flags: uint32(flags)}, req)
 
 	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
 	return err
@@ -528,7 +602,13 @@ type vxlanPortRange struct {
 
 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)))
 	}
@@ -569,6 +649,9 @@ func addVxlanAttrs(vxlan *Vxlan, linkInfo *nl.RtAttr) {
 	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 {
@@ -818,16 +901,17 @@ func (h *Handle) linkModify(link Link, flags int) error {
 	linkInfo := nl.NewRtAttr(syscall.IFLA_LINKINFO, nil)
 	nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_KIND, nl.NonZeroTerminated(link.Type()))
 
-	if vlan, ok := link.(*Vlan); ok {
+	switch link := link.(type) {
+	case *Vlan:
 		b := make([]byte, 2)
-		native.PutUint16(b, uint16(vlan.VlanId))
+		native.PutUint16(b, uint16(link.VlanId))
 		data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
 		nl.NewRtAttrChild(data, nl.IFLA_VLAN_ID, b)
-	} else if veth, ok := link.(*Veth); ok {
+	case *Veth:
 		data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
 		peer := nl.NewRtAttrChild(data, nl.VETH_INFO_PEER, nil)
 		nl.NewIfInfomsgChild(peer, syscall.AF_UNSPEC)
-		nl.NewRtAttrChild(peer, syscall.IFLA_IFNAME, nl.ZeroTerminated(veth.PeerName))
+		nl.NewRtAttrChild(peer, syscall.IFLA_IFNAME, nl.ZeroTerminated(link.PeerName))
 		if base.TxQLen >= 0 {
 			nl.NewRtAttrChild(peer, syscall.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen)))
 		}
@@ -835,35 +919,37 @@ func (h *Handle) linkModify(link Link, flags int) error {
 			nl.NewRtAttrChild(peer, syscall.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU)))
 		}
 
-	} else if vxlan, ok := link.(*Vxlan); ok {
-		addVxlanAttrs(vxlan, linkInfo)
-	} else if bond, ok := link.(*Bond); ok {
-		addBondAttrs(bond, linkInfo)
-	} else if ipv, ok := link.(*IPVlan); ok {
+	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(ipv.Mode)))
-	} else if macv, ok := link.(*Macvlan); ok {
-		if macv.Mode != MACVLAN_MODE_DEFAULT {
+		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[macv.Mode]))
+			nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[link.Mode]))
 		}
-	} else if macv, ok := link.(*Macvtap); ok {
-		if macv.Mode != MACVLAN_MODE_DEFAULT {
+	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[macv.Mode]))
+			nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[link.Mode]))
 		}
-	} else if gretap, ok := link.(*Gretap); ok {
-		addGretapAttrs(gretap, linkInfo)
-	} else if iptun, ok := link.(*Iptun); ok {
-		addIptunAttrs(iptun, linkInfo)
-	} else if vti, ok := link.(*Vti); ok {
-		addVtiAttrs(vti, linkInfo)
-	} else if vrf, ok := link.(*Vrf); ok {
-		addVrfAttrs(vrf, linkInfo)
-	} else if bridge, ok := link.(*Bridge); ok {
-		addBridgeAttrs(bridge, linkInfo)
-	} else if gtp, ok := link.(*GTP); ok {
-		addGTPAttrs(gtp, linkInfo)
+	case *Gretap:
+		addGretapAttrs(link, linkInfo)
+	case *Iptun:
+		addIptunAttrs(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)
@@ -1093,6 +1179,8 @@ func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) {
 						link = &Gretap{}
 					case "ipip":
 						link = &Iptun{}
+					case "gre":
+						link = &Gretun{}
 					case "vti":
 						link = &Vti{}
 					case "vrf":
@@ -1124,6 +1212,8 @@ func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) {
 						parseGretapData(link, data)
 					case "ipip":
 						parseIptunData(link, data)
+					case "gre":
+						parseGretunData(link, data)
 					case "vti":
 						parseVtiData(link, data)
 					case "vrf":
@@ -1178,6 +1268,8 @@ func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) {
 			}
 		case syscall.IFLA_OPERSTATE:
 			base.OperState = LinkOperState(uint8(attr.Value[0]))
+		case nl.IFLA_LINK_NETNSID:
+			base.NetNsID = int(native.Uint32(attr.Value[0:4]))
 		}
 	}
 
@@ -1239,16 +1331,34 @@ type LinkUpdate struct {
 // LinkSubscribe takes a chan down which notifications will be sent
 // when links change.  Close the 'done' chan to stop subscription.
 func LinkSubscribe(ch chan<- LinkUpdate, done <-chan struct{}) error {
-	return linkSubscribe(netns.None(), netns.None(), ch, done)
+	return linkSubscribeAt(netns.None(), netns.None(), ch, done, nil)
 }
 
 // LinkSubscribeAt works like LinkSubscribe plus it allows the caller
 // to choose the network namespace in which to subscribe (ns).
 func LinkSubscribeAt(ns netns.NsHandle, ch chan<- LinkUpdate, done <-chan struct{}) error {
-	return linkSubscribe(ns, netns.None(), ch, done)
+	return linkSubscribeAt(ns, netns.None(), ch, done, nil)
+}
+
+// LinkSubscribeOptions contains a set of options to use with
+// LinkSubscribeWithOptions.
+type LinkSubscribeOptions struct {
+	Namespace     *netns.NsHandle
+	ErrorCallback func(error)
+}
+
+// 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)
 }
 
-func linkSubscribe(newNs, curNs netns.NsHandle, ch chan<- LinkUpdate, done <-chan struct{}) error {
+func linkSubscribeAt(newNs, curNs netns.NsHandle, ch chan<- LinkUpdate, done <-chan struct{}, cberr func(error)) error {
 	s, err := nl.SubscribeAt(newNs, curNs, syscall.NETLINK_ROUTE, syscall.RTNLGRP_LINK)
 	if err != nil {
 		return err
@@ -1264,12 +1374,18 @@ func linkSubscribe(newNs, curNs netns.NsHandle, ch chan<- LinkUpdate, done <-cha
 		for {
 			msgs, err := s.Receive()
 			if err != nil {
+				if cberr != nil {
+					cberr(err)
+				}
 				return
 			}
 			for _, m := range msgs {
 				ifmsg := nl.DeserializeIfInfomsg(m.Data)
 				link, err := LinkDeserialize(&m.Header, m.Data)
 				if err != nil {
+					if cberr != nil {
+						cberr(err)
+					}
 					return
 				}
 				ch <- LinkUpdate{IfInfomsg: *ifmsg, Header: m.Header, Link: link}
@@ -1363,6 +1479,33 @@ func (h *Handle) setProtinfoAttr(link Link, mode bool, attr int) error {
 	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(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
+
+	msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
+	msg.Index = int32(base.Index)
+	req.AddData(msg)
+
+	b := make([]byte, 4)
+	native.PutUint32(b, uint32(qlen))
+
+	data := nl.NewRtAttr(syscall.IFLA_TXQLEN, b)
+	req.AddData(data)
+
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	return err
+}
+
 func parseVlanData(link Link, data []syscall.NetlinkRouteAttr) {
 	vlan := link.(*Vlan)
 	for _, datum := range data {
@@ -1407,6 +1550,8 @@ func parseVxlanData(link Link, data []syscall.NetlinkRouteAttr) {
 			vxlan.UDPCSum = 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
@@ -1547,6 +1692,12 @@ func linkFlags(rawFlags uint32) net.Flags {
 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
+	}
+
 	ip := gretap.Local.To4()
 	if ip != nil {
 		nl.NewRtAttrChild(data, nl.IFLA_GRE_LOCAL, []byte(ip))
@@ -1613,6 +1764,69 @@ func parseGretapData(link Link, data []syscall.NetlinkRouteAttr) {
 			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:
+			gre.FlowBased = int8(datum.Value[0]) != 0
+		}
+	}
+}
+
+func addGretunAttrs(gre *Gretun, linkInfo *nl.RtAttr) {
+	data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
+
+	ip := gre.Local.To4()
+	if ip != nil {
+		nl.NewRtAttrChild(data, nl.IFLA_GRE_LOCAL, []byte(ip))
+	}
+	ip = gre.Remote.To4()
+	if ip != nil {
+		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))
+}
+
+func parseGretunData(link Link, data []syscall.NetlinkRouteAttr) {
+	gre := link.(*Gretun)
+	for _, datum := range data {
+		switch datum.Attr.Type {
+		case nl.IFLA_GRE_OKEY:
+			gre.IKey = ntohl(datum.Value[0:4])
+		case nl.IFLA_GRE_IKEY:
+			gre.OKey = ntohl(datum.Value[0:4])
+		case nl.IFLA_GRE_LOCAL:
+			gre.Local = net.IP(datum.Value[0:4])
+		case nl.IFLA_GRE_REMOTE:
+			gre.Remote = net.IP(datum.Value[0:4])
+		case nl.IFLA_GRE_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])
 		}
 	}
 }
@@ -1630,8 +1844,10 @@ func addXdpAttrs(xdp *LinkXdp, req *nl.NetlinkRequest) {
 	b := make([]byte, 4)
 	native.PutUint32(b, uint32(xdp.Fd))
 	nl.NewRtAttrChild(attrs, nl.IFLA_XDP_FD, b)
-	native.PutUint32(b, xdp.Flags)
-	nl.NewRtAttrChild(attrs, nl.IFLA_XDP_FLAGS, b)
+	if xdp.Flags != 0 {
+		native.PutUint32(b, xdp.Flags)
+		nl.NewRtAttrChild(attrs, nl.IFLA_XDP_FLAGS, b)
+	}
 	req.AddData(attrs)
 }
 
@@ -1649,6 +1865,8 @@ func parseLinkXdp(data []byte) (*LinkXdp, error) {
 			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

vendor/github.com/vishvananda/netlink/neigh.go

@@ -14,6 +14,7 @@ type Neigh struct {
 	Flags        int
 	IP           net.IP
 	HardwareAddr net.HardwareAddr
+	LLIPAddr     net.IP //Used in the case of NHRP
 }
 
 // String returns $ip/$hwaddr $label

vendor/github.com/vishvananda/netlink/neigh_linux.go

@@ -128,6 +128,7 @@ func (h *Handle) NeighDel(neigh *Neigh) error {
 
 func neighHandle(neigh *Neigh, req *nl.NetlinkRequest) error {
 	var family int
+
 	if neigh.Family > 0 {
 		family = neigh.Family
 	} else {
@@ -151,7 +152,10 @@ func neighHandle(neigh *Neigh, req *nl.NetlinkRequest) error {
 	dstData := nl.NewRtAttr(NDA_DST, ipData)
 	req.AddData(dstData)
 
-	if neigh.Flags != NTF_PROXY || neigh.HardwareAddr != nil {
+	if neigh.LLIPAddr != nil {
+		llIPData := nl.NewRtAttr(NDA_LLADDR, neigh.LLIPAddr.To4())
+		req.AddData(llIPData)
+	} else if neigh.Flags != NTF_PROXY || neigh.HardwareAddr != nil {
 		hwData := nl.NewRtAttr(NDA_LLADDR, []byte(neigh.HardwareAddr))
 		req.AddData(hwData)
 	}
@@ -237,12 +241,33 @@ func NeighDeserialize(m []byte) (*Neigh, error) {
 		return nil, err
 	}
 
+	// This should be cached for perfomance
+	// once per table dump
+	link, err := LinkByIndex(neigh.LinkIndex)
+	if err != nil {
+		return nil, err
+	}
+	encapType := link.Attrs().EncapType
+
 	for _, attr := range attrs {
 		switch attr.Attr.Type {
 		case NDA_DST:
 			neigh.IP = net.IP(attr.Value)
 		case NDA_LLADDR:
-			neigh.HardwareAddr = net.HardwareAddr(attr.Value)
+			// BUG: Is this a bug in the netlink library?
+			// #define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
+			// #define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
+			attrLen := attr.Attr.Len - syscall.SizeofRtAttr
+			if attrLen == 4 && (encapType == "ipip" ||
+				encapType == "sit" ||
+				encapType == "gre") {
+				neigh.LLIPAddr = net.IP(attr.Value)
+			} else if attrLen == 16 &&
+				encapType == "tunnel6" {
+				neigh.IP = net.IP(attr.Value)
+			} else {
+				neigh.HardwareAddr = net.HardwareAddr(attr.Value)
+			}
 		}
 	}
 

vendor/github.com/vishvananda/netlink/netlink_unspecified.go

@@ -108,6 +108,10 @@ func LinkSetFlood(link Link, mode bool) error {
 	return ErrNotImplemented
 }
 
+func LinkSetTxQLen(link Link, qlen int) error {
+	return ErrNotImplemented
+}
+
 func LinkAdd(link Link) error {
 	return ErrNotImplemented
 }

vendor/github.com/vishvananda/netlink/nl/bridge_linux.go

@@ -0,0 +1,74 @@
+package nl
+
+import (
+	"fmt"
+	"unsafe"
+)
+
+const (
+	SizeofBridgeVlanInfo = 0x04
+)
+
+/* Bridge Flags */
+const (
+	BRIDGE_FLAGS_MASTER = iota /* Bridge command to/from master */
+	BRIDGE_FLAGS_SELF          /* Bridge command to/from lowerdev */
+)
+
+/* Bridge management nested attributes
+ * [IFLA_AF_SPEC] = {
+ *     [IFLA_BRIDGE_FLAGS]
+ *     [IFLA_BRIDGE_MODE]
+ *     [IFLA_BRIDGE_VLAN_INFO]
+ * }
+ */
+const (
+	IFLA_BRIDGE_FLAGS = iota
+	IFLA_BRIDGE_MODE
+	IFLA_BRIDGE_VLAN_INFO
+)
+
+const (
+	BRIDGE_VLAN_INFO_MASTER = 1 << iota
+	BRIDGE_VLAN_INFO_PVID
+	BRIDGE_VLAN_INFO_UNTAGGED
+	BRIDGE_VLAN_INFO_RANGE_BEGIN
+	BRIDGE_VLAN_INFO_RANGE_END
+)
+
+// struct bridge_vlan_info {
+//   __u16 flags;
+//   __u16 vid;
+// };
+
+type BridgeVlanInfo struct {
+	Flags uint16
+	Vid   uint16
+}
+
+func (b *BridgeVlanInfo) Serialize() []byte {
+	return (*(*[SizeofBridgeVlanInfo]byte)(unsafe.Pointer(b)))[:]
+}
+
+func DeserializeBridgeVlanInfo(b []byte) *BridgeVlanInfo {
+	return (*BridgeVlanInfo)(unsafe.Pointer(&b[0:SizeofBridgeVlanInfo][0]))
+}
+
+func (b *BridgeVlanInfo) PortVID() bool {
+	return b.Flags&BRIDGE_VLAN_INFO_PVID > 0
+}
+
+func (b *BridgeVlanInfo) EngressUntag() bool {
+	return b.Flags&BRIDGE_VLAN_INFO_UNTAGGED > 0
+}
+
+func (b *BridgeVlanInfo) String() string {
+	return fmt.Sprintf("%+v", *b)
+}
+
+/* New extended info filters for IFLA_EXT_MASK */
+const (
+	RTEXT_FILTER_VF = 1 << iota
+	RTEXT_FILTER_BRVLAN
+	RTEXT_FILTER_BRVLAN_COMPRESSED
+)

vendor/github.com/vishvananda/netlink/nl/conntrack_linux.go

@@ -79,8 +79,8 @@ const (
 	CTA_TUPLE_ORIG  = 1
 	CTA_TUPLE_REPLY = 2
 	CTA_STATUS      = 3
-	CTA_TIMEOUT     = 8
-	CTA_MARK        = 9
+	CTA_TIMEOUT     = 7
+	CTA_MARK        = 8
 	CTA_PROTOINFO   = 4
 )
 

vendor/github.com/vishvananda/netlink/nl/link_linux.go

@@ -231,7 +231,8 @@ const (
 	 * on/off switch
 	 */
 	IFLA_VF_STATS /* network device statistics */
-	IFLA_VF_MAX   = IFLA_VF_STATS
+	IFLA_VF_TRUST /* Trust state of VF */
+	IFLA_VF_MAX   = IFLA_VF_TRUST
 )
 
 const (
@@ -259,6 +260,7 @@ const (
 	SizeofVfSpoofchk   = 0x08
 	SizeofVfLinkState  = 0x08
 	SizeofVfRssQueryEn = 0x08
+	SizeofVfTrust      = 0x08
 )
 
 // struct ifla_vf_mac {
@@ -419,12 +421,42 @@ func (msg *VfRssQueryEn) Serialize() []byte {
 	return (*(*[SizeofVfRssQueryEn]byte)(unsafe.Pointer(msg)))[:]
 }
 
+// struct ifla_vf_trust {
+//   __u32 vf;
+//   __u32 setting;
+// };
+
+type VfTrust struct {
+	Vf      uint32
+	Setting uint32
+}
+
+func (msg *VfTrust) Len() int {
+	return SizeofVfTrust
+}
+
+func DeserializeVfTrust(b []byte) *VfTrust {
+	return (*VfTrust)(unsafe.Pointer(&b[0:SizeofVfTrust][0]))
+}
+
+func (msg *VfTrust) Serialize() []byte {
+	return (*(*[SizeofVfTrust]byte)(unsafe.Pointer(msg)))[:]
+}
+
+const (
+	XDP_FLAGS_UPDATE_IF_NOEXIST = 1 << iota
+	XDP_FLAGS_SKB_MODE
+	XDP_FLAGS_DRV_MODE
+	XDP_FLAGS_MASK = XDP_FLAGS_UPDATE_IF_NOEXIST | XDP_FLAGS_SKB_MODE | XDP_FLAGS_DRV_MODE
+)
+
 const (
 	IFLA_XDP_UNSPEC   = iota
 	IFLA_XDP_FD       /* fd of xdp program to attach, or -1 to remove */
 	IFLA_XDP_ATTACHED /* read-only bool indicating if prog is attached */
 	IFLA_XDP_FLAGS    /* xdp prog related flags */
-	IFLA_XDP_MAX      = IFLA_XDP_FLAGS
+	IFLA_XDP_PROG_ID  /* xdp prog id */
+	IFLA_XDP_MAX      = IFLA_XDP_PROG_ID
 )
 
 const (

vendor/github.com/vishvananda/netlink/nl/nl_linux.go

@@ -621,6 +621,20 @@ func (s *NetlinkSocket) Receive() ([]syscall.NetlinkMessage, error) {
 	return syscall.ParseNetlinkMessage(rb)
 }
 
+// SetSendTimeout allows to set a send timeout on the socket
+func (s *NetlinkSocket) SetSendTimeout(timeout *syscall.Timeval) error {
+	// Set a send timeout of SOCKET_SEND_TIMEOUT, this will allow the Send to periodically unblock and avoid that a routine
+	// remains stuck on a send on a closed fd
+	return syscall.SetsockoptTimeval(int(s.fd), syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, timeout)
+}
+
+// SetReceiveTimeout allows to set a receive timeout on the socket
+func (s *NetlinkSocket) SetReceiveTimeout(timeout *syscall.Timeval) error {
+	// Set a read timeout of SOCKET_READ_TIMEOUT, this will allow the Read to periodically unblock and avoid that a routine
+	// remains stuck on a recvmsg on a closed fd
+	return syscall.SetsockoptTimeval(int(s.fd), syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, timeout)
+}
+
 func (s *NetlinkSocket) GetPid() (uint32, error) {
 	fd := int(atomic.LoadInt32(&s.fd))
 	lsa, err := syscall.Getsockname(fd)

vendor/github.com/vishvananda/netlink/qdisc_linux.go

@@ -160,71 +160,73 @@ func qdiscPayload(req *nl.NetlinkRequest, qdisc Qdisc) error {
 	req.AddData(nl.NewRtAttr(nl.TCA_KIND, nl.ZeroTerminated(qdisc.Type())))
 
 	options := nl.NewRtAttr(nl.TCA_OPTIONS, nil)
-	if prio, ok := qdisc.(*Prio); ok {
+
+	switch qdisc := qdisc.(type) {
+	case *Prio:
 		tcmap := nl.TcPrioMap{
-			Bands:   int32(prio.Bands),
-			Priomap: prio.PriorityMap,
+			Bands:   int32(qdisc.Bands),
+			Priomap: qdisc.PriorityMap,
 		}
 		options = nl.NewRtAttr(nl.TCA_OPTIONS, tcmap.Serialize())
-	} else if tbf, ok := qdisc.(*Tbf); ok {
+	case *Tbf:
 		opt := nl.TcTbfQopt{}
-		opt.Rate.Rate = uint32(tbf.Rate)
-		opt.Peakrate.Rate = uint32(tbf.Peakrate)
-		opt.Limit = tbf.Limit
-		opt.Buffer = tbf.Buffer
+		opt.Rate.Rate = uint32(qdisc.Rate)
+		opt.Peakrate.Rate = uint32(qdisc.Peakrate)
+		opt.Limit = qdisc.Limit
+		opt.Buffer = qdisc.Buffer
 		nl.NewRtAttrChild(options, nl.TCA_TBF_PARMS, opt.Serialize())
-		if tbf.Rate >= uint64(1<<32) {
-			nl.NewRtAttrChild(options, nl.TCA_TBF_RATE64, nl.Uint64Attr(tbf.Rate))
+		if qdisc.Rate >= uint64(1<<32) {
+			nl.NewRtAttrChild(options, nl.TCA_TBF_RATE64, nl.Uint64Attr(qdisc.Rate))
 		}
-		if tbf.Peakrate >= uint64(1<<32) {
-			nl.NewRtAttrChild(options, nl.TCA_TBF_PRATE64, nl.Uint64Attr(tbf.Peakrate))
+		if qdisc.Peakrate >= uint64(1<<32) {
+			nl.NewRtAttrChild(options, nl.TCA_TBF_PRATE64, nl.Uint64Attr(qdisc.Peakrate))
 		}
-		if tbf.Peakrate > 0 {
-			nl.NewRtAttrChild(options, nl.TCA_TBF_PBURST, nl.Uint32Attr(tbf.Minburst))
+		if qdisc.Peakrate > 0 {
+			nl.NewRtAttrChild(options, nl.TCA_TBF_PBURST, nl.Uint32Attr(qdisc.Minburst))
 		}
-	} else if htb, ok := qdisc.(*Htb); ok {
+	case *Htb:
 		opt := nl.TcHtbGlob{}
-		opt.Version = htb.Version
-		opt.Rate2Quantum = htb.Rate2Quantum
-		opt.Defcls = htb.Defcls
+		opt.Version = qdisc.Version
+		opt.Rate2Quantum = qdisc.Rate2Quantum
+		opt.Defcls = qdisc.Defcls
 		// TODO: Handle Debug properly. For now default to 0
-		opt.Debug = htb.Debug
-		opt.DirectPkts = htb.DirectPkts
+		opt.Debug = qdisc.Debug
+		opt.DirectPkts = qdisc.DirectPkts
 		nl.NewRtAttrChild(options, nl.TCA_HTB_INIT, opt.Serialize())
 		// nl.NewRtAttrChild(options, nl.TCA_HTB_DIRECT_QLEN, opt.Serialize())
-	} else if netem, ok := qdisc.(*Netem); ok {
+	case *Netem:
 		opt := nl.TcNetemQopt{}
-		opt.Latency = netem.Latency
-		opt.Limit = netem.Limit
-		opt.Loss = netem.Loss
-		opt.Gap = netem.Gap
-		opt.Duplicate = netem.Duplicate
-		opt.Jitter = netem.Jitter
+		opt.Latency = qdisc.Latency
+		opt.Limit = qdisc.Limit
+		opt.Loss = qdisc.Loss
+		opt.Gap = qdisc.Gap
+		opt.Duplicate = qdisc.Duplicate
+		opt.Jitter = qdisc.Jitter
 		options = nl.NewRtAttr(nl.TCA_OPTIONS, opt.Serialize())
 		// Correlation
 		corr := nl.TcNetemCorr{}
-		corr.DelayCorr = netem.DelayCorr
-		corr.LossCorr = netem.LossCorr
-		corr.DupCorr = netem.DuplicateCorr
+		corr.DelayCorr = qdisc.DelayCorr
+		corr.LossCorr = qdisc.LossCorr
+		corr.DupCorr = qdisc.DuplicateCorr
 
 		if corr.DelayCorr > 0 || corr.LossCorr > 0 || corr.DupCorr > 0 {
 			nl.NewRtAttrChild(options, nl.TCA_NETEM_CORR, corr.Serialize())
 		}
 		// Corruption
 		corruption := nl.TcNetemCorrupt{}
-		corruption.Probability = netem.CorruptProb
-		corruption.Correlation = netem.CorruptCorr
+		corruption.Probability = qdisc.CorruptProb
+		corruption.Correlation = qdisc.CorruptCorr
 		if corruption.Probability > 0 {
 			nl.NewRtAttrChild(options, nl.TCA_NETEM_CORRUPT, corruption.Serialize())
 		}
 		// Reorder
 		reorder := nl.TcNetemReorder{}
-		reorder.Probability = netem.ReorderProb
-		reorder.Correlation = netem.ReorderCorr
+		reorder.Probability = qdisc.ReorderProb
+		reorder.Correlation = qdisc.ReorderCorr
 		if reorder.Probability > 0 {
 			nl.NewRtAttrChild(options, nl.TCA_NETEM_REORDER, reorder.Serialize())
 		}
-	} else if _, ok := qdisc.(*Ingress); ok {
+	case *Ingress:
 		// ingress filters must use the proper handle
 		if qdisc.Attrs().Parent != HANDLE_INGRESS {
 			return fmt.Errorf("Ingress filters must set Parent to HANDLE_INGRESS")

vendor/github.com/vishvananda/netlink/route.go

@@ -16,6 +16,7 @@ type Destination interface {
 	Decode([]byte) error
 	Encode() ([]byte, error)
 	String() string
+	Equal(Destination) bool
 }
 
 type Encap interface {
@@ -23,6 +24,7 @@ type Encap interface {
 	Decode([]byte) error
 	Encode() ([]byte, error)
 	String() string
+	Equal(Encap) bool
 }
 
 // Route represents a netlink route.
@@ -72,6 +74,25 @@ func (r Route) String() string {
 	return fmt.Sprintf("{%s}", strings.Join(elems, " "))
 }
 
+func (r Route) Equal(x Route) bool {
+	return r.LinkIndex == x.LinkIndex &&
+		r.ILinkIndex == x.ILinkIndex &&
+		r.Scope == x.Scope &&
+		ipNetEqual(r.Dst, x.Dst) &&
+		r.Src.Equal(x.Src) &&
+		r.Gw.Equal(x.Gw) &&
+		nexthopInfoSlice(r.MultiPath).Equal(x.MultiPath) &&
+		r.Protocol == x.Protocol &&
+		r.Priority == x.Priority &&
+		r.Table == x.Table &&
+		r.Type == x.Type &&
+		r.Tos == x.Tos &&
+		r.Flags == x.Flags &&
+		(r.MPLSDst == x.MPLSDst || (r.MPLSDst != nil && x.MPLSDst != nil && *r.MPLSDst == *x.MPLSDst)) &&
+		(r.NewDst == x.NewDst || (r.NewDst != nil && r.NewDst.Equal(x.NewDst))) &&
+		(r.Encap == x.Encap || (r.Encap != nil && r.Encap.Equal(x.Encap)))
+}
+
 func (r *Route) SetFlag(flag NextHopFlag) {
 	r.Flags |= int(flag)
 }
@@ -110,7 +131,46 @@ func (n *NexthopInfo) String() string {
 		elems = append(elems, fmt.Sprintf("Encap: %s", n.Encap))
 	}
 	elems = append(elems, fmt.Sprintf("Weight: %d", n.Hops+1))
-	elems = append(elems, fmt.Sprintf("Gw: %d", n.Gw))
+	elems = append(elems, fmt.Sprintf("Gw: %s", n.Gw))
 	elems = append(elems, fmt.Sprintf("Flags: %s", n.ListFlags()))
 	return fmt.Sprintf("{%s}", strings.Join(elems, " "))
 }
+
+func (n NexthopInfo) Equal(x NexthopInfo) bool {
+	return n.LinkIndex == x.LinkIndex &&
+		n.Hops == x.Hops &&
+		n.Gw.Equal(x.Gw) &&
+		n.Flags == x.Flags &&
+		(n.NewDst == x.NewDst || (n.NewDst != nil && n.NewDst.Equal(x.NewDst))) &&
+		(n.Encap == x.Encap || (n.Encap != nil && n.Encap.Equal(x.Encap)))
+}
+
+type nexthopInfoSlice []*NexthopInfo
+
+func (n nexthopInfoSlice) Equal(x []*NexthopInfo) bool {
+	if len(n) != len(x) {
+		return false
+	}
+	for i := range n {
+		if n[i] == nil || x[i] == nil {
+			return false
+		}
+		if !n[i].Equal(*x[i]) {
+			return false
+		}
+	}
+	return true
+}
+
+// ipNetEqual returns true iff both IPNet are equal
+func ipNetEqual(ipn1 *net.IPNet, ipn2 *net.IPNet) bool {
+	if ipn1 == ipn2 {
+		return true
+	}
+	if ipn1 == nil || ipn2 == nil {
+		return false
+	}
+	m1, _ := ipn1.Mask.Size()
+	m2, _ := ipn2.Mask.Size()
+	return m1 == m2 && ipn1.IP.Equal(ipn2.IP)
+}

vendor/github.com/vishvananda/netlink/route_linux.go

@@ -86,6 +86,34 @@ func (d *MPLSDestination) String() string {
 	return strings.Join(s, "/")
 }
 
+func (d *MPLSDestination) Equal(x Destination) bool {
+	o, ok := x.(*MPLSDestination)
+	if !ok {
+		return false
+	}
+	if d == nil && o == nil {
+		return true
+	}
+	if d == nil || o == nil {
+		return false
+	}
+	if d.Labels == nil && o.Labels == nil {
+		return true
+	}
+	if d.Labels == nil || o.Labels == nil {
+		return false
+	}
+	if len(d.Labels) != len(o.Labels) {
+		return false
+	}
+	for i := range d.Labels {
+		if d.Labels[i] != o.Labels[i] {
+			return false
+		}
+	}
+	return true
+}
+
 type MPLSEncap struct {
 	Labels []int
 }
@@ -129,6 +157,34 @@ func (e *MPLSEncap) String() string {
 	return strings.Join(s, "/")
 }
 
+func (e *MPLSEncap) Equal(x Encap) bool {
+	o, ok := x.(*MPLSEncap)
+	if !ok {
+		return false
+	}
+	if e == nil && o == nil {
+		return true
+	}
+	if e == nil || o == nil {
+		return false
+	}
+	if e.Labels == nil && o.Labels == nil {
+		return true
+	}
+	if e.Labels == nil || o.Labels == nil {
+		return false
+	}
+	if len(e.Labels) != len(o.Labels) {
+		return false
+	}
+	for i := range e.Labels {
+		if e.Labels[i] != o.Labels[i] {
+			return false
+		}
+	}
+	return true
+}
+
 // RouteAdd will add a route to the system.
 // Equivalent to: `ip route add $route`
 func RouteAdd(route *Route) error {
@@ -421,19 +477,8 @@ func (h *Handle) RouteListFiltered(family int, filter *Route, filterMask uint64)
 				continue
 			case filterMask&RT_FILTER_DST != 0:
 				if filter.MPLSDst == nil || route.MPLSDst == nil || (*filter.MPLSDst) != (*route.MPLSDst) {
-					if filter.Dst == nil {
-						if route.Dst != nil {
-							continue
-						}
-					} else {
-						if route.Dst == nil {
-							continue
-						}
-						aMaskLen, aMaskBits := route.Dst.Mask.Size()
-						bMaskLen, bMaskBits := filter.Dst.Mask.Size()
-						if !(route.Dst.IP.Equal(filter.Dst.IP) && aMaskLen == bMaskLen && aMaskBits == bMaskBits) {
-							continue
-						}
+					if !ipNetEqual(route.Dst, filter.Dst) {
+						continue
 					}
 				}
 			}
@@ -633,16 +678,34 @@ func (h *Handle) RouteGet(destination net.IP) ([]Route, error) {
 // RouteSubscribe takes a chan down which notifications will be sent
 // when routes are added or deleted. Close the 'done' chan to stop subscription.
 func RouteSubscribe(ch chan<- RouteUpdate, done <-chan struct{}) error {
-	return routeSubscribeAt(netns.None(), netns.None(), ch, done)
+	return routeSubscribeAt(netns.None(), netns.None(), ch, done, nil)
 }
 
 // RouteSubscribeAt works like RouteSubscribe plus it allows the caller
 // to choose the network namespace in which to subscribe (ns).
 func RouteSubscribeAt(ns netns.NsHandle, ch chan<- RouteUpdate, done <-chan struct{}) error {
-	return routeSubscribeAt(ns, netns.None(), ch, done)
+	return routeSubscribeAt(ns, netns.None(), ch, done, nil)
 }
 
-func routeSubscribeAt(newNs, curNs netns.NsHandle, ch chan<- RouteUpdate, done <-chan struct{}) error {
+// RouteSubscribeOptions contains a set of options to use with
+// RouteSubscribeWithOptions.
+type RouteSubscribeOptions struct {
+	Namespace     *netns.NsHandle
+	ErrorCallback func(error)
+}
+
+// RouteSubscribeWithOptions work like RouteSubscribe but enable to
+// provide additional options to modify the behavior. Currently, the
+// namespace can be provided as well as an error callback.
+func RouteSubscribeWithOptions(ch chan<- RouteUpdate, done <-chan struct{}, options RouteSubscribeOptions) error {
+	if options.Namespace == nil {
+		none := netns.None()
+		options.Namespace = &none
+	}
+	return routeSubscribeAt(*options.Namespace, netns.None(), ch, done, options.ErrorCallback)
+}
+
+func routeSubscribeAt(newNs, curNs netns.NsHandle, ch chan<- RouteUpdate, done <-chan struct{}, cberr func(error)) error {
 	s, err := nl.SubscribeAt(newNs, curNs, syscall.NETLINK_ROUTE, syscall.RTNLGRP_IPV4_ROUTE, syscall.RTNLGRP_IPV6_ROUTE)
 	if err != nil {
 		return err
@@ -658,11 +721,17 @@ func routeSubscribeAt(newNs, curNs netns.NsHandle, ch chan<- RouteUpdate, done <
 		for {
 			msgs, err := s.Receive()
 			if err != nil {
+				if cberr != nil {
+					cberr(err)
+				}
 				return
 			}
 			for _, m := range msgs {
 				route, err := deserializeRoute(m.Data)
 				if err != nil {
+					if cberr != nil {
+						cberr(err)
+					}
 					return
 				}
 				ch <- RouteUpdate{Type: m.Header.Type, Route: route}

vendor/github.com/vishvananda/netlink/rule.go

@@ -8,6 +8,7 @@ import (
 // Rule represents a netlink rule.
 type Rule struct {
 	Priority          int
+	Family            int
 	Table             int
 	Mark              int
 	Mask              int

vendor/github.com/vishvananda/netlink/rule_linux.go

@@ -37,6 +37,9 @@ func (h *Handle) RuleDel(rule *Rule) error {
 func ruleHandle(rule *Rule, req *nl.NetlinkRequest) error {
 	msg := nl.NewRtMsg()
 	msg.Family = syscall.AF_INET
+	if rule.Family != 0 {
+		msg.Family = uint8(rule.Family)
+	}
 	var dstFamily uint8
 
 	var rtAttrs []*nl.RtAttr