updates

Signed-off-by: Jess Frazelle <jess@mesosphere.com>

vendor/github.com/vishvananda/netlink/LICENSE

@@ -0,0 +1,192 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
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+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2014 Vishvananda Ishaya.
+   Copyright 2014 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

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

@@ -0,0 +1,45 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+	"strings"
+)
+
+// Addr represents an IP address from netlink. Netlink ip addresses
+// include a mask, so it stores the address as a net.IPNet.
+type Addr struct {
+	*net.IPNet
+	Label string
+	Flags int
+	Scope int
+}
+
+// String returns $ip/$netmask $label
+func (a Addr) String() string {
+	return strings.TrimSpace(fmt.Sprintf("%s %s", a.IPNet, a.Label))
+}
+
+// ParseAddr parses the string representation of an address in the
+// form $ip/$netmask $label. The label portion is optional
+func ParseAddr(s string) (*Addr, error) {
+	label := ""
+	parts := strings.Split(s, " ")
+	if len(parts) > 1 {
+		s = parts[0]
+		label = parts[1]
+	}
+	m, err := ParseIPNet(s)
+	if err != nil {
+		return nil, err
+	}
+	return &Addr{IPNet: m, Label: label}, nil
+}
+
+// Equal returns true if both Addrs have the same net.IPNet value.
+func (a Addr) Equal(x Addr) bool {
+	sizea, _ := a.Mask.Size()
+	sizeb, _ := x.Mask.Size()
+	// ignore label for comparison
+	return a.IP.Equal(x.IP) && sizea == sizeb
+}

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

@@ -0,0 +1,210 @@
+package netlink
+
+import (
+	"fmt"
+	"log"
+	"net"
+	"strings"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// IFA_FLAGS is a u32 attribute.
+const IFA_FLAGS = 0x8
+
+// AddrAdd will add an IP address to a link device.
+// Equivalent to: `ip addr add $addr dev $link`
+func AddrAdd(link Link, addr *Addr) error {
+
+	req := nl.NewNetlinkRequest(syscall.RTM_NEWADDR, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK)
+	return addrHandle(link, addr, req)
+}
+
+// AddrDel will delete an IP address from a link device.
+// Equivalent to: `ip addr del $addr dev $link`
+func AddrDel(link Link, addr *Addr) error {
+	req := nl.NewNetlinkRequest(syscall.RTM_DELADDR, syscall.NLM_F_ACK)
+	return addrHandle(link, addr, req)
+}
+
+func addrHandle(link Link, addr *Addr, req *nl.NetlinkRequest) error {
+	base := link.Attrs()
+	if addr.Label != "" && !strings.HasPrefix(addr.Label, base.Name) {
+		return fmt.Errorf("label must begin with interface name")
+	}
+	ensureIndex(base)
+
+	family := nl.GetIPFamily(addr.IP)
+
+	msg := nl.NewIfAddrmsg(family)
+	msg.Index = uint32(base.Index)
+	msg.Scope = uint8(addr.Scope)
+	prefixlen, _ := addr.Mask.Size()
+	msg.Prefixlen = uint8(prefixlen)
+	req.AddData(msg)
+
+	var addrData []byte
+	if family == FAMILY_V4 {
+		addrData = addr.IP.To4()
+	} else {
+		addrData = addr.IP.To16()
+	}
+
+	localData := nl.NewRtAttr(syscall.IFA_LOCAL, addrData)
+	req.AddData(localData)
+
+	addressData := nl.NewRtAttr(syscall.IFA_ADDRESS, addrData)
+	req.AddData(addressData)
+
+	if addr.Flags != 0 {
+		b := make([]byte, 4)
+		native.PutUint32(b, uint32(addr.Flags))
+		flagsData := nl.NewRtAttr(IFA_FLAGS, b)
+		req.AddData(flagsData)
+	}
+
+	if addr.Label != "" {
+		labelData := nl.NewRtAttr(syscall.IFA_LABEL, nl.ZeroTerminated(addr.Label))
+		req.AddData(labelData)
+	}
+
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	return err
+}
+
+// AddrList gets a list of IP addresses in the system.
+// Equivalent to: `ip addr show`.
+// The list can be filtered by link and ip family.
+func AddrList(link Link, family int) ([]Addr, error) {
+	req := nl.NewNetlinkRequest(syscall.RTM_GETADDR, syscall.NLM_F_DUMP)
+	msg := nl.NewIfInfomsg(family)
+	req.AddData(msg)
+
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWADDR)
+	if err != nil {
+		return nil, err
+	}
+
+	indexFilter := 0
+	if link != nil {
+		base := link.Attrs()
+		ensureIndex(base)
+		indexFilter = base.Index
+	}
+
+	var res []Addr
+	for _, m := range msgs {
+		addr, msgFamily, ifindex, err := parseAddr(m)
+		if err != nil {
+			return res, err
+		}
+
+		if link != nil && ifindex != indexFilter {
+			// Ignore messages from other interfaces
+			continue
+		}
+
+		if family != FAMILY_ALL && msgFamily != family {
+			continue
+		}
+
+		res = append(res, addr)
+	}
+
+	return res, nil
+}
+
+func parseAddr(m []byte) (addr Addr, family, index int, err error) {
+	msg := nl.DeserializeIfAddrmsg(m)
+
+	family = -1
+	index = -1
+
+	attrs, err1 := nl.ParseRouteAttr(m[msg.Len():])
+	if err1 != nil {
+		err = err1
+		return
+	}
+
+	family = int(msg.Family)
+	index = int(msg.Index)
+
+	var local, dst *net.IPNet
+	for _, attr := range attrs {
+		switch attr.Attr.Type {
+		case syscall.IFA_ADDRESS:
+			dst = &net.IPNet{
+				IP:   attr.Value,
+				Mask: net.CIDRMask(int(msg.Prefixlen), 8*len(attr.Value)),
+			}
+		case syscall.IFA_LOCAL:
+			local = &net.IPNet{
+				IP:   attr.Value,
+				Mask: net.CIDRMask(int(msg.Prefixlen), 8*len(attr.Value)),
+			}
+		case syscall.IFA_LABEL:
+			addr.Label = string(attr.Value[:len(attr.Value)-1])
+		case IFA_FLAGS:
+			addr.Flags = int(native.Uint32(attr.Value[0:4]))
+		}
+	}
+
+	// IFA_LOCAL should be there but if not, fall back to IFA_ADDRESS
+	if local != nil {
+		addr.IPNet = local
+	} else {
+		addr.IPNet = dst
+	}
+	addr.Scope = int(msg.Scope)
+
+	return
+}
+
+type AddrUpdate struct {
+	LinkAddress net.IPNet
+	LinkIndex   int
+	NewAddr     bool // true=added false=deleted
+}
+
+// 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 {
+	s, err := nl.Subscribe(syscall.NETLINK_ROUTE, syscall.RTNLGRP_IPV4_IFADDR, syscall.RTNLGRP_IPV6_IFADDR)
+	if err != nil {
+		return err
+	}
+	if done != nil {
+		go func() {
+			<-done
+			s.Close()
+		}()
+	}
+	go func() {
+		defer close(ch)
+		for {
+			msgs, err := s.Receive()
+			if err != nil {
+				log.Printf("netlink.AddrSubscribe: Receive() error: %v", 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
+				}
+
+				addr, _, ifindex, err := parseAddr(m.Data)
+				if err != nil {
+					log.Printf("netlink.AddrSubscribe: could not parse address: %v", err)
+					continue
+				}
+
+				ch <- AddrUpdate{LinkAddress: *addr.IPNet, LinkIndex: ifindex, NewAddr: msgType == syscall.RTM_NEWADDR}
+			}
+		}
+	}()
+
+	return nil
+}

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

@@ -0,0 +1,60 @@
+package netlink
+
+/*
+#include <asm/types.h>
+#include <asm/unistd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+
+static int load_simple_bpf(int prog_type) {
+#ifdef __NR_bpf
+	// { return 1; }
+	__u64 __attribute__((aligned(8))) insns[] = {
+		0x00000001000000b7ull,
+		0x0000000000000095ull,
+	};
+	__u8 __attribute__((aligned(8))) license[] = "ASL2";
+	// Copied from a header file since libc is notoriously slow to update.
+	// The call will succeed or fail and that will be our indication on
+	// whether or not it is supported.
+	struct {
+		__u32 prog_type;
+		__u32 insn_cnt;
+		__u64 insns;
+		__u64 license;
+		__u32 log_level;
+		__u32 log_size;
+		__u64 log_buf;
+		__u32 kern_version;
+	} __attribute__((aligned(8))) attr = {
+		.prog_type = prog_type,
+		.insn_cnt = 2,
+		.insns = (uintptr_t)&insns,
+		.license = (uintptr_t)&license,
+	};
+	return syscall(__NR_bpf, 5, &attr, sizeof(attr));
+#else
+	errno = EINVAL;
+	return -1;
+#endif
+}
+*/
+import "C"
+
+type BpfProgType C.int
+
+const (
+	BPF_PROG_TYPE_UNSPEC BpfProgType = iota
+	BPF_PROG_TYPE_SOCKET_FILTER
+	BPF_PROG_TYPE_KPROBE
+	BPF_PROG_TYPE_SCHED_CLS
+	BPF_PROG_TYPE_SCHED_ACT
+)
+
+// loadSimpleBpf loads a trivial bpf program for testing purposes
+func loadSimpleBpf(progType BpfProgType) (int, error) {
+	fd, err := C.load_simple_bpf(C.int(progType))
+	return int(fd), err
+}

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

@@ -0,0 +1,111 @@
+package netlink
+
+import (
+	"fmt"
+)
+
+type Class interface {
+	Attrs() *ClassAttrs
+	Type() string
+}
+
+// ClassAttrs represents a netlink class. A filter is associated with a link,
+// has a handle and a parent. The root filter of a device should have a
+// parent == HANDLE_ROOT.
+type ClassAttrs struct {
+	LinkIndex int
+	Handle    uint32
+	Parent    uint32
+	Leaf      uint32
+}
+
+func (q ClassAttrs) String() string {
+	return fmt.Sprintf("{LinkIndex: %d, Handle: %s, Parent: %s, Leaf: %d}", q.LinkIndex, HandleStr(q.Handle), HandleStr(q.Parent), q.Leaf)
+}
+
+type HtbClassAttrs struct {
+	// TODO handle all attributes
+	Rate    uint64
+	Ceil    uint64
+	Buffer  uint32
+	Cbuffer uint32
+	Quantum uint32
+	Level   uint32
+	Prio    uint32
+}
+
+func (q HtbClassAttrs) String() string {
+	return fmt.Sprintf("{Rate: %d, Ceil: %d, Buffer: %d, Cbuffer: %d}", q.Rate, q.Ceil, q.Buffer, q.Cbuffer)
+}
+
+// HtbClass represents an Htb class
+type HtbClass struct {
+	ClassAttrs
+	Rate    uint64
+	Ceil    uint64
+	Buffer  uint32
+	Cbuffer uint32
+	Quantum uint32
+	Level   uint32
+	Prio    uint32
+}
+
+func NewHtbClass(attrs ClassAttrs, cattrs HtbClassAttrs) *HtbClass {
+	mtu := 1600
+	rate := cattrs.Rate / 8
+	ceil := cattrs.Ceil / 8
+	buffer := cattrs.Buffer
+	cbuffer := cattrs.Cbuffer
+
+	if ceil == 0 {
+		ceil = rate
+	}
+
+	if buffer == 0 {
+		buffer = uint32(float64(rate)/Hz() + float64(mtu))
+	}
+	buffer = uint32(Xmittime(rate, buffer))
+
+	if cbuffer == 0 {
+		cbuffer = uint32(float64(ceil)/Hz() + float64(mtu))
+	}
+	cbuffer = uint32(Xmittime(ceil, cbuffer))
+
+	return &HtbClass{
+		ClassAttrs: attrs,
+		Rate:       rate,
+		Ceil:       ceil,
+		Buffer:     buffer,
+		Cbuffer:    cbuffer,
+		Quantum:    10,
+		Level:      0,
+		Prio:       0,
+	}
+}
+
+func (q HtbClass) String() string {
+	return fmt.Sprintf("{Rate: %d, Ceil: %d, Buffer: %d, Cbuffer: %d}", q.Rate, q.Ceil, q.Buffer, q.Cbuffer)
+}
+
+func (q *HtbClass) Attrs() *ClassAttrs {
+	return &q.ClassAttrs
+}
+
+func (q *HtbClass) Type() string {
+	return "htb"
+}
+
+// GenericClass classes represent types that are not currently understood
+// by this netlink library.
+type GenericClass struct {
+	ClassAttrs
+	ClassType string
+}
+
+func (class *GenericClass) Attrs() *ClassAttrs {
+	return &class.ClassAttrs
+}
+
+func (class *GenericClass) Type() string {
+	return class.ClassType
+}

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

@@ -0,0 +1,186 @@
+package netlink
+
+import (
+	"errors"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// ClassDel will delete a class from the system.
+// Equivalent to: `tc class del $class`
+func ClassDel(class Class) error {
+	return classModify(syscall.RTM_DELTCLASS, 0, class)
+}
+
+// ClassChange will change a class in place
+// Equivalent to: `tc class change $class`
+// The parent and handle MUST NOT be changed.
+
+func ClassChange(class Class) error {
+	return classModify(syscall.RTM_NEWTCLASS, 0, class)
+}
+
+// ClassReplace will replace a class to the system.
+// quivalent to: `tc class replace $class`
+// The handle MAY be changed.
+// If a class already exist with this parent/handle pair, the class is changed.
+// If a class does not already exist with this parent/handle, a new class is created.
+func ClassReplace(class Class) error {
+	return classModify(syscall.RTM_NEWTCLASS, syscall.NLM_F_CREATE, class)
+}
+
+// ClassAdd will add a class to the system.
+// Equivalent to: `tc class add $class`
+func ClassAdd(class Class) error {
+	return classModify(
+		syscall.RTM_NEWTCLASS,
+		syscall.NLM_F_CREATE|syscall.NLM_F_EXCL,
+		class,
+	)
+}
+
+func classModify(cmd, flags int, class Class) error {
+	req := nl.NewNetlinkRequest(cmd, flags|syscall.NLM_F_ACK)
+	base := class.Attrs()
+	msg := &nl.TcMsg{
+		Family:  nl.FAMILY_ALL,
+		Ifindex: int32(base.LinkIndex),
+		Handle:  base.Handle,
+		Parent:  base.Parent,
+	}
+	req.AddData(msg)
+
+	if cmd != syscall.RTM_DELTCLASS {
+		if err := classPayload(req, class); err != nil {
+			return err
+		}
+	}
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	return err
+}
+
+func classPayload(req *nl.NetlinkRequest, class Class) error {
+	req.AddData(nl.NewRtAttr(nl.TCA_KIND, nl.ZeroTerminated(class.Type())))
+
+	options := nl.NewRtAttr(nl.TCA_OPTIONS, nil)
+	if htb, ok := class.(*HtbClass); ok {
+		opt := nl.TcHtbCopt{}
+		opt.Buffer = htb.Buffer
+		opt.Cbuffer = htb.Cbuffer
+		opt.Quantum = htb.Quantum
+		opt.Level = htb.Level
+		opt.Prio = htb.Prio
+		// TODO: Handle Debug properly. For now default to 0
+		/* Calculate {R,C}Tab and set Rate and Ceil */
+		cellLog := -1
+		ccellLog := -1
+		linklayer := nl.LINKLAYER_ETHERNET
+		mtu := 1600
+		var rtab [256]uint32
+		var ctab [256]uint32
+		tcrate := nl.TcRateSpec{Rate: uint32(htb.Rate)}
+		if CalcRtable(&tcrate, rtab, cellLog, uint32(mtu), linklayer) < 0 {
+			return errors.New("HTB: failed to calculate rate table")
+		}
+		opt.Rate = tcrate
+		tcceil := nl.TcRateSpec{Rate: uint32(htb.Ceil)}
+		if CalcRtable(&tcceil, ctab, ccellLog, uint32(mtu), linklayer) < 0 {
+			return errors.New("HTB: failed to calculate ceil rate table")
+		}
+		opt.Ceil = tcceil
+		nl.NewRtAttrChild(options, nl.TCA_HTB_PARMS, opt.Serialize())
+		nl.NewRtAttrChild(options, nl.TCA_HTB_RTAB, SerializeRtab(rtab))
+		nl.NewRtAttrChild(options, nl.TCA_HTB_CTAB, SerializeRtab(ctab))
+	}
+	req.AddData(options)
+	return nil
+}
+
+// ClassList gets a list of classes in the system.
+// Equivalent to: `tc class show`.
+// Generally returns nothing if link and parent are not specified.
+func ClassList(link Link, parent uint32) ([]Class, error) {
+	req := nl.NewNetlinkRequest(syscall.RTM_GETTCLASS, syscall.NLM_F_DUMP)
+	msg := &nl.TcMsg{
+		Family: nl.FAMILY_ALL,
+		Parent: parent,
+	}
+	if link != nil {
+		base := link.Attrs()
+		ensureIndex(base)
+		msg.Ifindex = int32(base.Index)
+	}
+	req.AddData(msg)
+
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWTCLASS)
+	if err != nil {
+		return nil, err
+	}
+
+	var res []Class
+	for _, m := range msgs {
+		msg := nl.DeserializeTcMsg(m)
+
+		attrs, err := nl.ParseRouteAttr(m[msg.Len():])
+		if err != nil {
+			return nil, err
+		}
+
+		base := ClassAttrs{
+			LinkIndex: int(msg.Ifindex),
+			Handle:    msg.Handle,
+			Parent:    msg.Parent,
+		}
+
+		var class Class
+		classType := ""
+		for _, attr := range attrs {
+			switch attr.Attr.Type {
+			case nl.TCA_KIND:
+				classType = string(attr.Value[:len(attr.Value)-1])
+				switch classType {
+				case "htb":
+					class = &HtbClass{}
+				default:
+					class = &GenericClass{ClassType: classType}
+				}
+			case nl.TCA_OPTIONS:
+				switch classType {
+				case "htb":
+					data, err := nl.ParseRouteAttr(attr.Value)
+					if err != nil {
+						return nil, err
+					}
+					_, err = parseHtbClassData(class, data)
+					if err != nil {
+						return nil, err
+					}
+				}
+			}
+		}
+		*class.Attrs() = base
+		res = append(res, class)
+	}
+
+	return res, nil
+}
+
+func parseHtbClassData(class Class, data []syscall.NetlinkRouteAttr) (bool, error) {
+	htb := class.(*HtbClass)
+	detailed := false
+	for _, datum := range data {
+		switch datum.Attr.Type {
+		case nl.TCA_HTB_PARMS:
+			opt := nl.DeserializeTcHtbCopt(datum.Value)
+			htb.Rate = uint64(opt.Rate.Rate)
+			htb.Ceil = uint64(opt.Ceil.Rate)
+			htb.Buffer = opt.Buffer
+			htb.Cbuffer = opt.Cbuffer
+			htb.Quantum = opt.Quantum
+			htb.Level = opt.Level
+			htb.Prio = opt.Prio
+		}
+	}
+	return detailed, nil
+}

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

@@ -0,0 +1,190 @@
+package netlink
+
+import (
+	"errors"
+	"fmt"
+	"github.com/vishvananda/netlink/nl"
+)
+
+type Filter interface {
+	Attrs() *FilterAttrs
+	Type() string
+}
+
+// FilterAttrs represents a netlink filter. A filter is associated with a link,
+// has a handle and a parent. The root filter of a device should have a
+// parent == HANDLE_ROOT.
+type FilterAttrs struct {
+	LinkIndex int
+	Handle    uint32
+	Parent    uint32
+	Priority  uint16 // lower is higher priority
+	Protocol  uint16 // syscall.ETH_P_*
+}
+
+func (q FilterAttrs) String() string {
+	return fmt.Sprintf("{LinkIndex: %d, Handle: %s, Parent: %s, Priority: %d, Protocol: %d}", q.LinkIndex, HandleStr(q.Handle), HandleStr(q.Parent), q.Priority, q.Protocol)
+}
+
+// Action represents an action in any supported filter.
+type Action interface {
+	Type() string
+}
+
+type BpfAction struct {
+	nl.TcActBpf
+	Fd   int
+	Name string
+}
+
+func (action *BpfAction) Type() string {
+	return "bpf"
+}
+
+type MirredAction struct {
+	nl.TcMirred
+}
+
+func (action *MirredAction) Type() string {
+	return "mirred"
+}
+
+func NewMirredAction(redirIndex int) *MirredAction {
+	return &MirredAction{
+		TcMirred: nl.TcMirred{
+			TcGen:   nl.TcGen{Action: nl.TC_ACT_STOLEN},
+			Eaction: nl.TCA_EGRESS_REDIR,
+			Ifindex: uint32(redirIndex),
+		},
+	}
+}
+
+// U32 filters on many packet related properties
+type U32 struct {
+	FilterAttrs
+	ClassId    uint32
+	RedirIndex int
+	Actions    []Action
+}
+
+func (filter *U32) Attrs() *FilterAttrs {
+	return &filter.FilterAttrs
+}
+
+func (filter *U32) Type() string {
+	return "u32"
+}
+
+type FilterFwAttrs struct {
+	ClassId   uint32
+	InDev     string
+	Mask      uint32
+	Index     uint32
+	Buffer    uint32
+	Mtu       uint32
+	Mpu       uint16
+	Rate      uint32
+	AvRate    uint32
+	PeakRate  uint32
+	Action    int
+	Overhead  uint16
+	LinkLayer int
+}
+
+// Fw filter filters on firewall marks
+type Fw struct {
+	FilterAttrs
+	ClassId uint32
+	Police  nl.TcPolice
+	InDev   string
+	// TODO Action
+	Mask   uint32
+	AvRate uint32
+	Rtab   [256]uint32
+	Ptab   [256]uint32
+}
+
+func NewFw(attrs FilterAttrs, fattrs FilterFwAttrs) (*Fw, error) {
+	var rtab [256]uint32
+	var ptab [256]uint32
+	rcellLog := -1
+	pcellLog := -1
+	avrate := fattrs.AvRate / 8
+	police := nl.TcPolice{}
+	police.Rate.Rate = fattrs.Rate / 8
+	police.PeakRate.Rate = fattrs.PeakRate / 8
+	buffer := fattrs.Buffer
+	linklayer := nl.LINKLAYER_ETHERNET
+
+	if fattrs.LinkLayer != nl.LINKLAYER_UNSPEC {
+		linklayer = fattrs.LinkLayer
+	}
+
+	police.Action = int32(fattrs.Action)
+	if police.Rate.Rate != 0 {
+		police.Rate.Mpu = fattrs.Mpu
+		police.Rate.Overhead = fattrs.Overhead
+		if CalcRtable(&police.Rate, rtab, rcellLog, fattrs.Mtu, linklayer) < 0 {
+			return nil, errors.New("TBF: failed to calculate rate table")
+		}
+		police.Burst = uint32(Xmittime(uint64(police.Rate.Rate), uint32(buffer)))
+	}
+	police.Mtu = fattrs.Mtu
+	if police.PeakRate.Rate != 0 {
+		police.PeakRate.Mpu = fattrs.Mpu
+		police.PeakRate.Overhead = fattrs.Overhead
+		if CalcRtable(&police.PeakRate, ptab, pcellLog, fattrs.Mtu, linklayer) < 0 {
+			return nil, errors.New("POLICE: failed to calculate peak rate table")
+		}
+	}
+
+	return &Fw{
+		FilterAttrs: attrs,
+		ClassId:     fattrs.ClassId,
+		InDev:       fattrs.InDev,
+		Mask:        fattrs.Mask,
+		Police:      police,
+		AvRate:      avrate,
+		Rtab:        rtab,
+		Ptab:        ptab,
+	}, nil
+}
+
+func (filter *Fw) Attrs() *FilterAttrs {
+	return &filter.FilterAttrs
+}
+
+func (filter *Fw) Type() string {
+	return "fw"
+}
+
+type BpfFilter struct {
+	FilterAttrs
+	ClassId      uint32
+	Fd           int
+	Name         string
+	DirectAction bool
+}
+
+func (filter *BpfFilter) Type() string {
+	return "bpf"
+}
+
+func (filter *BpfFilter) Attrs() *FilterAttrs {
+	return &filter.FilterAttrs
+}
+
+// GenericFilter filters represent types that are not currently understood
+// by this netlink library.
+type GenericFilter struct {
+	FilterAttrs
+	FilterType string
+}
+
+func (filter *GenericFilter) Attrs() *FilterAttrs {
+	return &filter.FilterAttrs
+}
+
+func (filter *GenericFilter) Type() string {
+	return filter.FilterType
+}

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

@@ -0,0 +1,424 @@
+package netlink
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// FilterDel will delete a filter from the system.
+// Equivalent to: `tc filter del $filter`
+func FilterDel(filter Filter) error {
+	req := nl.NewNetlinkRequest(syscall.RTM_DELTFILTER, syscall.NLM_F_ACK)
+	base := filter.Attrs()
+	msg := &nl.TcMsg{
+		Family:  nl.FAMILY_ALL,
+		Ifindex: int32(base.LinkIndex),
+		Handle:  base.Handle,
+		Parent:  base.Parent,
+		Info:    MakeHandle(base.Priority, nl.Swap16(base.Protocol)),
+	}
+	req.AddData(msg)
+
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	return err
+}
+
+// FilterAdd will add a filter to the system.
+// Equivalent to: `tc filter add $filter`
+func FilterAdd(filter Filter) error {
+	native = nl.NativeEndian()
+	req := nl.NewNetlinkRequest(syscall.RTM_NEWTFILTER, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK)
+	base := filter.Attrs()
+	msg := &nl.TcMsg{
+		Family:  nl.FAMILY_ALL,
+		Ifindex: int32(base.LinkIndex),
+		Handle:  base.Handle,
+		Parent:  base.Parent,
+		Info:    MakeHandle(base.Priority, nl.Swap16(base.Protocol)),
+	}
+	req.AddData(msg)
+	req.AddData(nl.NewRtAttr(nl.TCA_KIND, nl.ZeroTerminated(filter.Type())))
+
+	options := nl.NewRtAttr(nl.TCA_OPTIONS, nil)
+	if u32, ok := filter.(*U32); ok {
+		// match all
+		sel := nl.TcU32Sel{
+			Nkeys: 1,
+			Flags: nl.TC_U32_TERMINAL,
+		}
+		sel.Keys = append(sel.Keys, nl.TcU32Key{})
+		nl.NewRtAttrChild(options, nl.TCA_U32_SEL, sel.Serialize())
+		if u32.ClassId != 0 {
+			nl.NewRtAttrChild(options, nl.TCA_U32_CLASSID, nl.Uint32Attr(u32.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 err := encodeActions(actionsAttr, u32.Actions); err != nil {
+			return err
+		}
+	} else if fw, ok := filter.(*Fw); ok {
+		if fw.Mask != 0 {
+			b := make([]byte, 4)
+			native.PutUint32(b, fw.Mask)
+			nl.NewRtAttrChild(options, nl.TCA_FW_MASK, b)
+		}
+		if fw.InDev != "" {
+			nl.NewRtAttrChild(options, nl.TCA_FW_INDEV, nl.ZeroTerminated(fw.InDev))
+		}
+		if (fw.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_RATE, payload)
+			}
+			if (fw.Police.PeakRate != nl.TcRateSpec{}) {
+				payload := SerializeRtab(fw.Ptab)
+				nl.NewRtAttrChild(police, nl.TCA_POLICE_PEAKRATE, payload)
+			}
+		}
+		if fw.ClassId != 0 {
+			b := make([]byte, 4)
+			native.PutUint32(b, fw.ClassId)
+			nl.NewRtAttrChild(options, nl.TCA_FW_CLASSID, b)
+		}
+	} else if bpf, ok := filter.(*BpfFilter); ok {
+		var bpfFlags uint32
+		if bpf.ClassId != 0 {
+			nl.NewRtAttrChild(options, nl.TCA_BPF_CLASSID, nl.Uint32Attr(bpf.ClassId))
+		}
+		if bpf.Fd >= 0 {
+			nl.NewRtAttrChild(options, nl.TCA_BPF_FD, nl.Uint32Attr((uint32(bpf.Fd))))
+		}
+		if bpf.Name != "" {
+			nl.NewRtAttrChild(options, nl.TCA_BPF_NAME, nl.ZeroTerminated(bpf.Name))
+		}
+		if bpf.DirectAction {
+			bpfFlags |= nl.TCA_BPF_FLAG_ACT_DIRECT
+		}
+		nl.NewRtAttrChild(options, nl.TCA_BPF_FLAGS, nl.Uint32Attr(bpfFlags))
+	}
+
+	req.AddData(options)
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	return err
+}
+
+// FilterList gets a list of filters in the system.
+// Equivalent to: `tc filter show`.
+// Generally retunrs nothing if link and parent are not specified.
+func FilterList(link Link, parent uint32) ([]Filter, error) {
+	req := nl.NewNetlinkRequest(syscall.RTM_GETTFILTER, syscall.NLM_F_DUMP)
+	msg := &nl.TcMsg{
+		Family: nl.FAMILY_ALL,
+		Parent: parent,
+	}
+	if link != nil {
+		base := link.Attrs()
+		ensureIndex(base)
+		msg.Ifindex = int32(base.Index)
+	}
+	req.AddData(msg)
+
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWTFILTER)
+	if err != nil {
+		return nil, err
+	}
+
+	var res []Filter
+	for _, m := range msgs {
+		msg := nl.DeserializeTcMsg(m)
+
+		attrs, err := nl.ParseRouteAttr(m[msg.Len():])
+		if err != nil {
+			return nil, err
+		}
+
+		base := FilterAttrs{
+			LinkIndex: int(msg.Ifindex),
+			Handle:    msg.Handle,
+			Parent:    msg.Parent,
+		}
+		base.Priority, base.Protocol = MajorMinor(msg.Info)
+		base.Protocol = nl.Swap16(base.Protocol)
+
+		var filter Filter
+		filterType := ""
+		detailed := false
+		for _, attr := range attrs {
+			switch attr.Attr.Type {
+			case nl.TCA_KIND:
+				filterType = string(attr.Value[:len(attr.Value)-1])
+				switch filterType {
+				case "u32":
+					filter = &U32{}
+				case "fw":
+					filter = &Fw{}
+				case "bpf":
+					filter = &BpfFilter{}
+				default:
+					filter = &GenericFilter{FilterType: filterType}
+				}
+			case nl.TCA_OPTIONS:
+				data, err := nl.ParseRouteAttr(attr.Value)
+				if err != nil {
+					return nil, err
+				}
+				switch filterType {
+				case "u32":
+					detailed, err = parseU32Data(filter, data)
+					if err != nil {
+						return nil, err
+					}
+				case "fw":
+					detailed, err = parseFwData(filter, data)
+					if err != nil {
+						return nil, err
+					}
+				case "bpf":
+					detailed, err = parseBpfData(filter, data)
+					if err != nil {
+						return nil, err
+					}
+				}
+			}
+		}
+		// only return the detailed version of the filter
+		if detailed {
+			*filter.Attrs() = base
+			res = append(res, filter)
+		}
+	}
+
+	return res, nil
+}
+
+func encodeActions(attr *nl.RtAttr, actions []Action) error {
+	tabIndex := int(nl.TCA_ACT_TAB)
+
+	for _, action := range actions {
+		switch action := action.(type) {
+		default:
+			return fmt.Errorf("unknown action type %s", action.Type())
+		case *MirredAction:
+			table := nl.NewRtAttrChild(attr, tabIndex, nil)
+			tabIndex++
+			nl.NewRtAttrChild(table, nl.TCA_ACT_KIND, nl.ZeroTerminated("mirred"))
+			aopts := nl.NewRtAttrChild(table, nl.TCA_ACT_OPTIONS, nil)
+			nl.NewRtAttrChild(aopts, nl.TCA_MIRRED_PARMS, action.Serialize())
+		case *BpfAction:
+			table := nl.NewRtAttrChild(attr, tabIndex, nil)
+			tabIndex++
+			nl.NewRtAttrChild(table, nl.TCA_ACT_KIND, nl.ZeroTerminated("bpf"))
+			aopts := nl.NewRtAttrChild(table, nl.TCA_ACT_OPTIONS, nil)
+			nl.NewRtAttrChild(aopts, nl.TCA_ACT_BPF_PARMS, action.Serialize())
+			nl.NewRtAttrChild(aopts, nl.TCA_ACT_BPF_FD, nl.Uint32Attr(uint32(action.Fd)))
+			nl.NewRtAttrChild(aopts, nl.TCA_ACT_BPF_NAME, nl.ZeroTerminated(action.Name))
+		}
+	}
+	return nil
+}
+
+func parseActions(tables []syscall.NetlinkRouteAttr) ([]Action, error) {
+	var actions []Action
+	for _, table := range tables {
+		var action Action
+		var actionType string
+		aattrs, err := nl.ParseRouteAttr(table.Value)
+		if err != nil {
+			return nil, err
+		}
+	nextattr:
+		for _, aattr := range aattrs {
+			switch aattr.Attr.Type {
+			case nl.TCA_KIND:
+				actionType = string(aattr.Value[:len(aattr.Value)-1])
+				// only parse if the action is mirred or bpf
+				switch actionType {
+				case "mirred":
+					action = &MirredAction{}
+				case "bpf":
+					action = &BpfAction{}
+				default:
+					break nextattr
+				}
+			case nl.TCA_OPTIONS:
+				adata, err := nl.ParseRouteAttr(aattr.Value)
+				if err != nil {
+					return nil, err
+				}
+				for _, adatum := range adata {
+					switch actionType {
+					case "mirred":
+						switch adatum.Attr.Type {
+						case nl.TCA_MIRRED_PARMS:
+							action.(*MirredAction).TcMirred = *nl.DeserializeTcMirred(adatum.Value)
+						}
+					case "bpf":
+						switch adatum.Attr.Type {
+						case nl.TCA_ACT_BPF_PARMS:
+							action.(*BpfAction).TcActBpf = *nl.DeserializeTcActBpf(adatum.Value)
+						case nl.TCA_ACT_BPF_FD:
+							action.(*BpfAction).Fd = int(native.Uint32(adatum.Value[0:4]))
+						case nl.TCA_ACT_BPF_NAME:
+							action.(*BpfAction).Name = string(adatum.Value[:len(adatum.Value)-1])
+						}
+					}
+				}
+			}
+		}
+		actions = append(actions, action)
+	}
+	return actions, nil
+}
+
+func parseU32Data(filter Filter, data []syscall.NetlinkRouteAttr) (bool, error) {
+	native = nl.NativeEndian()
+	u32 := filter.(*U32)
+	detailed := false
+	for _, datum := range data {
+		switch datum.Attr.Type {
+		case nl.TCA_U32_SEL:
+			detailed = true
+			sel := nl.DeserializeTcU32Sel(datum.Value)
+			// only parse if we have a very basic redirect
+			if sel.Flags&nl.TC_U32_TERMINAL == 0 || sel.Nkeys != 1 {
+				return detailed, nil
+			}
+		case nl.TCA_U32_ACT:
+			tables, err := nl.ParseRouteAttr(datum.Value)
+			if err != nil {
+				return detailed, err
+			}
+			u32.Actions, err = parseActions(tables)
+			if err != nil {
+				return detailed, err
+			}
+			for _, action := range u32.Actions {
+				if action, ok := action.(*MirredAction); ok {
+					u32.RedirIndex = int(action.Ifindex)
+				}
+			}
+		}
+	}
+	return detailed, nil
+}
+
+func parseFwData(filter Filter, data []syscall.NetlinkRouteAttr) (bool, error) {
+	native = nl.NativeEndian()
+	fw := filter.(*Fw)
+	detailed := true
+	for _, datum := range data {
+		switch datum.Attr.Type {
+		case nl.TCA_FW_MASK:
+			fw.Mask = native.Uint32(datum.Value[0:4])
+		case nl.TCA_FW_CLASSID:
+			fw.ClassId = native.Uint32(datum.Value[0:4])
+		case nl.TCA_FW_INDEV:
+			fw.InDev = string(datum.Value[:len(datum.Value)-1])
+		case nl.TCA_FW_POLICE:
+			adata, _ := nl.ParseRouteAttr(datum.Value)
+			for _, aattr := range adata {
+				switch aattr.Attr.Type {
+				case nl.TCA_POLICE_TBF:
+					fw.Police = *nl.DeserializeTcPolice(aattr.Value)
+				case nl.TCA_POLICE_RATE:
+					fw.Rtab = DeserializeRtab(aattr.Value)
+				case nl.TCA_POLICE_PEAKRATE:
+					fw.Ptab = DeserializeRtab(aattr.Value)
+				}
+			}
+		}
+	}
+	return detailed, nil
+}
+
+func parseBpfData(filter Filter, data []syscall.NetlinkRouteAttr) (bool, error) {
+	native = nl.NativeEndian()
+	bpf := filter.(*BpfFilter)
+	detailed := true
+	for _, datum := range data {
+		switch datum.Attr.Type {
+		case nl.TCA_BPF_FD:
+			bpf.Fd = int(native.Uint32(datum.Value[0:4]))
+		case nl.TCA_BPF_NAME:
+			bpf.Name = string(datum.Value[:len(datum.Value)-1])
+		case nl.TCA_BPF_CLASSID:
+			bpf.ClassId = native.Uint32(datum.Value[0:4])
+		case nl.TCA_BPF_FLAGS:
+			flags := native.Uint32(datum.Value[0:4])
+			if (flags & nl.TCA_BPF_FLAG_ACT_DIRECT) != 0 {
+				bpf.DirectAction = true
+			}
+		}
+	}
+	return detailed, nil
+}
+
+func AlignToAtm(size uint) uint {
+	var linksize, cells int
+	cells = int(size / nl.ATM_CELL_PAYLOAD)
+	if (size % nl.ATM_CELL_PAYLOAD) > 0 {
+		cells++
+	}
+	linksize = cells * nl.ATM_CELL_SIZE
+	return uint(linksize)
+}
+
+func AdjustSize(sz uint, mpu uint, linklayer int) uint {
+	if sz < mpu {
+		sz = mpu
+	}
+	switch linklayer {
+	case nl.LINKLAYER_ATM:
+		return AlignToAtm(sz)
+	default:
+		return sz
+	}
+}
+
+func CalcRtable(rate *nl.TcRateSpec, rtab [256]uint32, cellLog int, mtu uint32, linklayer int) int {
+	bps := rate.Rate
+	mpu := rate.Mpu
+	var sz uint
+	if mtu == 0 {
+		mtu = 2047
+	}
+	if cellLog < 0 {
+		cellLog = 0
+		for (mtu >> uint(cellLog)) > 255 {
+			cellLog++
+		}
+	}
+	for i := 0; i < 256; i++ {
+		sz = AdjustSize(uint((i+1)<<uint32(cellLog)), uint(mpu), linklayer)
+		rtab[i] = uint32(Xmittime(uint64(bps), uint32(sz)))
+	}
+	rate.CellAlign = -1
+	rate.CellLog = uint8(cellLog)
+	rate.Linklayer = uint8(linklayer & nl.TC_LINKLAYER_MASK)
+	return cellLog
+}
+
+func DeserializeRtab(b []byte) [256]uint32 {
+	var rtab [256]uint32
+	native := nl.NativeEndian()
+	r := bytes.NewReader(b)
+	_ = binary.Read(r, native, &rtab)
+	return rtab
+}
+
+func SerializeRtab(rtab [256]uint32) []byte {
+	native := nl.NativeEndian()
+	var w bytes.Buffer
+	_ = binary.Write(&w, native, rtab)
+	return w.Bytes()
+}

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

@@ -0,0 +1,560 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+	"syscall"
+)
+
+// Link represents a link device from netlink. Shared link attributes
+// like name may be retrieved using the Attrs() method. Unique data
+// can be retrieved by casting the object to the proper type.
+type Link interface {
+	Attrs() *LinkAttrs
+	Type() string
+}
+
+type (
+	NsPid int
+	NsFd  int
+)
+
+// LinkAttrs represents data shared by most link types
+type LinkAttrs struct {
+	Index        int
+	MTU          int
+	TxQLen       int // Transmit Queue Length
+	Name         string
+	HardwareAddr net.HardwareAddr
+	Flags        net.Flags
+	ParentIndex  int         // index of the parent link device
+	MasterIndex  int         // must be the index of a bridge
+	Namespace    interface{} // nil | NsPid | NsFd
+	Alias        string
+}
+
+// NewLinkAttrs returns LinkAttrs structure filled with default values
+func NewLinkAttrs() LinkAttrs {
+	return LinkAttrs{
+		TxQLen: -1,
+	}
+}
+
+// Device links cannot be created via netlink. These links
+// are links created by udev like 'lo' and 'etho0'
+type Device struct {
+	LinkAttrs
+}
+
+func (device *Device) Attrs() *LinkAttrs {
+	return &device.LinkAttrs
+}
+
+func (device *Device) Type() string {
+	return "device"
+}
+
+// Dummy links are dummy ethernet devices
+type Dummy struct {
+	LinkAttrs
+}
+
+func (dummy *Dummy) Attrs() *LinkAttrs {
+	return &dummy.LinkAttrs
+}
+
+func (dummy *Dummy) Type() string {
+	return "dummy"
+}
+
+// Ifb links are advanced dummy devices for packet filtering
+type Ifb struct {
+	LinkAttrs
+}
+
+func (ifb *Ifb) Attrs() *LinkAttrs {
+	return &ifb.LinkAttrs
+}
+
+func (ifb *Ifb) Type() string {
+	return "ifb"
+}
+
+// Bridge links are simple linux bridges
+type Bridge struct {
+	LinkAttrs
+}
+
+func (bridge *Bridge) Attrs() *LinkAttrs {
+	return &bridge.LinkAttrs
+}
+
+func (bridge *Bridge) Type() string {
+	return "bridge"
+}
+
+// Vlan links have ParentIndex set in their Attrs()
+type Vlan struct {
+	LinkAttrs
+	VlanId int
+}
+
+func (vlan *Vlan) Attrs() *LinkAttrs {
+	return &vlan.LinkAttrs
+}
+
+func (vlan *Vlan) Type() string {
+	return "vlan"
+}
+
+type MacvlanMode uint16
+
+const (
+	MACVLAN_MODE_DEFAULT MacvlanMode = iota
+	MACVLAN_MODE_PRIVATE
+	MACVLAN_MODE_VEPA
+	MACVLAN_MODE_BRIDGE
+	MACVLAN_MODE_PASSTHRU
+	MACVLAN_MODE_SOURCE
+)
+
+// Macvlan links have ParentIndex set in their Attrs()
+type Macvlan struct {
+	LinkAttrs
+	Mode MacvlanMode
+}
+
+func (macvlan *Macvlan) Attrs() *LinkAttrs {
+	return &macvlan.LinkAttrs
+}
+
+func (macvlan *Macvlan) Type() string {
+	return "macvlan"
+}
+
+// Macvtap - macvtap is a virtual interfaces based on macvlan
+type Macvtap struct {
+	Macvlan
+}
+
+func (macvtap Macvtap) Type() string {
+	return "macvtap"
+}
+
+type TuntapMode uint16
+
+const (
+	TUNTAP_MODE_TUN TuntapMode = syscall.IFF_TUN
+	TUNTAP_MODE_TAP TuntapMode = syscall.IFF_TAP
+)
+
+// Tuntap links created via /dev/tun/tap, but can be destroyed via netlink
+type Tuntap struct {
+	LinkAttrs
+	Mode TuntapMode
+}
+
+func (tuntap *Tuntap) Attrs() *LinkAttrs {
+	return &tuntap.LinkAttrs
+}
+
+func (tuntap *Tuntap) Type() string {
+	return "tuntap"
+}
+
+// Veth devices must specify PeerName on create
+type Veth struct {
+	LinkAttrs
+	PeerName string // veth on create only
+}
+
+func (veth *Veth) Attrs() *LinkAttrs {
+	return &veth.LinkAttrs
+}
+
+func (veth *Veth) Type() string {
+	return "veth"
+}
+
+// GenericLink links represent types that are not currently understood
+// by this netlink library.
+type GenericLink struct {
+	LinkAttrs
+	LinkType string
+}
+
+func (generic *GenericLink) Attrs() *LinkAttrs {
+	return &generic.LinkAttrs
+}
+
+func (generic *GenericLink) Type() string {
+	return generic.LinkType
+}
+
+type Vxlan struct {
+	LinkAttrs
+	VxlanId      int
+	VtepDevIndex int
+	SrcAddr      net.IP
+	Group        net.IP
+	TTL          int
+	TOS          int
+	Learning     bool
+	Proxy        bool
+	RSC          bool
+	L2miss       bool
+	L3miss       bool
+	UDPCSum      bool
+	NoAge        bool
+	GBP          bool
+	Age          int
+	Limit        int
+	Port         int
+	PortLow      int
+	PortHigh     int
+}
+
+func (vxlan *Vxlan) Attrs() *LinkAttrs {
+	return &vxlan.LinkAttrs
+}
+
+func (vxlan *Vxlan) Type() string {
+	return "vxlan"
+}
+
+type IPVlanMode uint16
+
+const (
+	IPVLAN_MODE_L2 IPVlanMode = iota
+	IPVLAN_MODE_L3
+	IPVLAN_MODE_MAX
+)
+
+type IPVlan struct {
+	LinkAttrs
+	Mode IPVlanMode
+}
+
+func (ipvlan *IPVlan) Attrs() *LinkAttrs {
+	return &ipvlan.LinkAttrs
+}
+
+func (ipvlan *IPVlan) Type() string {
+	return "ipvlan"
+}
+
+// BondMode type
+type BondMode int
+
+func (b BondMode) String() string {
+	s, ok := bondModeToString[b]
+	if !ok {
+		return fmt.Sprintf("BondMode(%d)", b)
+	}
+	return s
+}
+
+// StringToBondMode returns bond mode, or uknonw is the s is invalid.
+func StringToBondMode(s string) BondMode {
+	mode, ok := StringToBondModeMap[s]
+	if !ok {
+		return BOND_MODE_UNKNOWN
+	}
+	return mode
+}
+
+// Possible BondMode
+const (
+	BOND_MODE_802_3AD BondMode = iota
+	BOND_MODE_BALANCE_RR
+	BOND_MODE_ACTIVE_BACKUP
+	BOND_MODE_BALANCE_XOR
+	BOND_MODE_BROADCAST
+	BOND_MODE_BALANCE_TLB
+	BOND_MODE_BALANCE_ALB
+	BOND_MODE_UNKNOWN
+)
+
+var bondModeToString = map[BondMode]string{
+	BOND_MODE_802_3AD:       "802.3ad",
+	BOND_MODE_BALANCE_RR:    "balance-rr",
+	BOND_MODE_ACTIVE_BACKUP: "active-backup",
+	BOND_MODE_BALANCE_XOR:   "balance-xor",
+	BOND_MODE_BROADCAST:     "broadcast",
+	BOND_MODE_BALANCE_TLB:   "balance-tlb",
+	BOND_MODE_BALANCE_ALB:   "balance-alb",
+}
+var StringToBondModeMap = map[string]BondMode{
+	"802.3ad":       BOND_MODE_802_3AD,
+	"balance-rr":    BOND_MODE_BALANCE_RR,
+	"active-backup": BOND_MODE_ACTIVE_BACKUP,
+	"balance-xor":   BOND_MODE_BALANCE_XOR,
+	"broadcast":     BOND_MODE_BROADCAST,
+	"balance-tlb":   BOND_MODE_BALANCE_TLB,
+	"balance-alb":   BOND_MODE_BALANCE_ALB,
+}
+
+// BondArpValidate type
+type BondArpValidate int
+
+// Possible BondArpValidate value
+const (
+	BOND_ARP_VALIDATE_NONE BondArpValidate = iota
+	BOND_ARP_VALIDATE_ACTIVE
+	BOND_ARP_VALIDATE_BACKUP
+	BOND_ARP_VALIDATE_ALL
+)
+
+// BondPrimaryReselect type
+type BondPrimaryReselect int
+
+// Possible BondPrimaryReselect value
+const (
+	BOND_PRIMARY_RESELECT_ALWAYS BondPrimaryReselect = iota
+	BOND_PRIMARY_RESELECT_BETTER
+	BOND_PRIMARY_RESELECT_FAILURE
+)
+
+// BondArpAllTargets type
+type BondArpAllTargets int
+
+// Possible BondArpAllTargets value
+const (
+	BOND_ARP_ALL_TARGETS_ANY BondArpAllTargets = iota
+	BOND_ARP_ALL_TARGETS_ALL
+)
+
+// BondFailOverMac type
+type BondFailOverMac int
+
+// Possible BondFailOverMac value
+const (
+	BOND_FAIL_OVER_MAC_NONE BondFailOverMac = iota
+	BOND_FAIL_OVER_MAC_ACTIVE
+	BOND_FAIL_OVER_MAC_FOLLOW
+)
+
+// BondXmitHashPolicy type
+type BondXmitHashPolicy int
+
+func (b BondXmitHashPolicy) String() string {
+	s, ok := bondXmitHashPolicyToString[b]
+	if !ok {
+		return fmt.Sprintf("XmitHashPolicy(%d)", b)
+	}
+	return s
+}
+
+// StringToBondXmitHashPolicy returns bond lacp arte, or uknonw is the s is invalid.
+func StringToBondXmitHashPolicy(s string) BondXmitHashPolicy {
+	lacp, ok := StringToBondXmitHashPolicyMap[s]
+	if !ok {
+		return BOND_XMIT_HASH_POLICY_UNKNOWN
+	}
+	return lacp
+}
+
+// Possible BondXmitHashPolicy value
+const (
+	BOND_XMIT_HASH_POLICY_LAYER2 BondXmitHashPolicy = iota
+	BOND_XMIT_HASH_POLICY_LAYER3_4
+	BOND_XMIT_HASH_POLICY_LAYER2_3
+	BOND_XMIT_HASH_POLICY_ENCAP2_3
+	BOND_XMIT_HASH_POLICY_ENCAP3_4
+	BOND_XMIT_HASH_POLICY_UNKNOWN
+)
+
+var bondXmitHashPolicyToString = map[BondXmitHashPolicy]string{
+	BOND_XMIT_HASH_POLICY_LAYER2:   "layer2",
+	BOND_XMIT_HASH_POLICY_LAYER3_4: "layer3+4",
+	BOND_XMIT_HASH_POLICY_LAYER2_3: "layer2+3",
+	BOND_XMIT_HASH_POLICY_ENCAP2_3: "encap2+3",
+	BOND_XMIT_HASH_POLICY_ENCAP3_4: "encap3+4",
+}
+var StringToBondXmitHashPolicyMap = map[string]BondXmitHashPolicy{
+	"layer2":   BOND_XMIT_HASH_POLICY_LAYER2,
+	"layer3+4": BOND_XMIT_HASH_POLICY_LAYER3_4,
+	"layer2+3": BOND_XMIT_HASH_POLICY_LAYER2_3,
+	"encap2+3": BOND_XMIT_HASH_POLICY_ENCAP2_3,
+	"encap3+4": BOND_XMIT_HASH_POLICY_ENCAP3_4,
+}
+
+// BondLacpRate type
+type BondLacpRate int
+
+func (b BondLacpRate) String() string {
+	s, ok := bondLacpRateToString[b]
+	if !ok {
+		return fmt.Sprintf("LacpRate(%d)", b)
+	}
+	return s
+}
+
+// StringToBondLacpRate returns bond lacp arte, or uknonw is the s is invalid.
+func StringToBondLacpRate(s string) BondLacpRate {
+	lacp, ok := StringToBondLacpRateMap[s]
+	if !ok {
+		return BOND_LACP_RATE_UNKNOWN
+	}
+	return lacp
+}
+
+// Possible BondLacpRate value
+const (
+	BOND_LACP_RATE_SLOW BondLacpRate = iota
+	BOND_LACP_RATE_FAST
+	BOND_LACP_RATE_UNKNOWN
+)
+
+var bondLacpRateToString = map[BondLacpRate]string{
+	BOND_LACP_RATE_SLOW: "slow",
+	BOND_LACP_RATE_FAST: "fast",
+}
+var StringToBondLacpRateMap = map[string]BondLacpRate{
+	"slow": BOND_LACP_RATE_SLOW,
+	"fast": BOND_LACP_RATE_FAST,
+}
+
+// BondAdSelect type
+type BondAdSelect int
+
+// Possible BondAdSelect value
+const (
+	BOND_AD_SELECT_STABLE BondAdSelect = iota
+	BOND_AD_SELECT_BANDWIDTH
+	BOND_AD_SELECT_COUNT
+)
+
+// BondAdInfo represents ad info for bond
+type BondAdInfo struct {
+	AggregatorId int
+	NumPorts     int
+	ActorKey     int
+	PartnerKey   int
+	PartnerMac   net.HardwareAddr
+}
+
+// Bond representation
+type Bond struct {
+	LinkAttrs
+	Mode            BondMode
+	ActiveSlave     int
+	Miimon          int
+	UpDelay         int
+	DownDelay       int
+	UseCarrier      int
+	ArpInterval     int
+	ArpIpTargets    []net.IP
+	ArpValidate     BondArpValidate
+	ArpAllTargets   BondArpAllTargets
+	Primary         int
+	PrimaryReselect BondPrimaryReselect
+	FailOverMac     BondFailOverMac
+	XmitHashPolicy  BondXmitHashPolicy
+	ResendIgmp      int
+	NumPeerNotif    int
+	AllSlavesActive int
+	MinLinks        int
+	LpInterval      int
+	PackersPerSlave int
+	LacpRate        BondLacpRate
+	AdSelect        BondAdSelect
+	// looking at iproute tool AdInfo can only be retrived. It can't be set.
+	AdInfo *BondAdInfo
+}
+
+func NewLinkBond(atr LinkAttrs) *Bond {
+	return &Bond{
+		LinkAttrs:       atr,
+		Mode:            -1,
+		ActiveSlave:     -1,
+		Miimon:          -1,
+		UpDelay:         -1,
+		DownDelay:       -1,
+		UseCarrier:      -1,
+		ArpInterval:     -1,
+		ArpIpTargets:    nil,
+		ArpValidate:     -1,
+		ArpAllTargets:   -1,
+		Primary:         -1,
+		PrimaryReselect: -1,
+		FailOverMac:     -1,
+		XmitHashPolicy:  -1,
+		ResendIgmp:      -1,
+		NumPeerNotif:    -1,
+		AllSlavesActive: -1,
+		MinLinks:        -1,
+		LpInterval:      -1,
+		PackersPerSlave: -1,
+		LacpRate:        -1,
+		AdSelect:        -1,
+	}
+}
+
+// Flag mask for bond options. Bond.Flagmask must be set to on for option to work.
+const (
+	BOND_MODE_MASK uint64 = 1 << (1 + iota)
+	BOND_ACTIVE_SLAVE_MASK
+	BOND_MIIMON_MASK
+	BOND_UPDELAY_MASK
+	BOND_DOWNDELAY_MASK
+	BOND_USE_CARRIER_MASK
+	BOND_ARP_INTERVAL_MASK
+	BOND_ARP_VALIDATE_MASK
+	BOND_ARP_ALL_TARGETS_MASK
+	BOND_PRIMARY_MASK
+	BOND_PRIMARY_RESELECT_MASK
+	BOND_FAIL_OVER_MAC_MASK
+	BOND_XMIT_HASH_POLICY_MASK
+	BOND_RESEND_IGMP_MASK
+	BOND_NUM_PEER_NOTIF_MASK
+	BOND_ALL_SLAVES_ACTIVE_MASK
+	BOND_MIN_LINKS_MASK
+	BOND_LP_INTERVAL_MASK
+	BOND_PACKETS_PER_SLAVE_MASK
+	BOND_LACP_RATE_MASK
+	BOND_AD_SELECT_MASK
+)
+
+// Attrs implementation.
+func (bond *Bond) Attrs() *LinkAttrs {
+	return &bond.LinkAttrs
+}
+
+// Type implementation fro Vxlan.
+func (bond *Bond) Type() string {
+	return "bond"
+}
+
+// Gretap devices must specify LocalIP and RemoteIP on create
+type Gretap struct {
+	LinkAttrs
+	IKey       uint32
+	OKey       uint32
+	EncapSport uint16
+	EncapDport uint16
+	Local      net.IP
+	Remote     net.IP
+	IFlags     uint16
+	OFlags     uint16
+	PMtuDisc   uint8
+	Ttl        uint8
+	Tos        uint8
+	EncapType  uint16
+	EncapFlags uint16
+	Link       uint32
+}
+
+func (gretap *Gretap) Attrs() *LinkAttrs {
+	return &gretap.LinkAttrs
+}
+
+func (gretap *Gretap) Type() string {
+	return "gretap"
+}
+
+// iproute2 supported devices;
+// vlan | veth | vcan | dummy | ifb | macvlan | macvtap |
+// bridge | bond | ipoib | ip6tnl | ipip | sit | vxlan |
+// gre | gretap | ip6gre | ip6gretap | vti | nlmon |
+// bond_slave | ipvlan

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

@@ -0,0 +1,14 @@
+package netlink
+
+// ideally golang.org/x/sys/unix would define IfReq but it only has
+// IFNAMSIZ, hence this minimalistic implementation
+const (
+	SizeOfIfReq = 40
+	IFNAMSIZ    = 16
+)
+
+type ifReq struct {
+	Name  [IFNAMSIZ]byte
+	Flags uint16
+	pad   [SizeOfIfReq - IFNAMSIZ - 2]byte
+}

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

@@ -0,0 +1,22 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+)
+
+// Neigh represents a link layer neighbor from netlink.
+type Neigh struct {
+	LinkIndex    int
+	Family       int
+	State        int
+	Type         int
+	Flags        int
+	IP           net.IP
+	HardwareAddr net.HardwareAddr
+}
+
+// String returns $ip/$hwaddr $label
+func (neigh *Neigh) String() string {
+	return fmt.Sprintf("%s %s", neigh.IP, neigh.HardwareAddr)
+}

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

@@ -0,0 +1,190 @@
+package netlink
+
+import (
+	"net"
+	"syscall"
+	"unsafe"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+const (
+	NDA_UNSPEC = iota
+	NDA_DST
+	NDA_LLADDR
+	NDA_CACHEINFO
+	NDA_PROBES
+	NDA_VLAN
+	NDA_PORT
+	NDA_VNI
+	NDA_IFINDEX
+	NDA_MAX = NDA_IFINDEX
+)
+
+// Neighbor Cache Entry States.
+const (
+	NUD_NONE       = 0x00
+	NUD_INCOMPLETE = 0x01
+	NUD_REACHABLE  = 0x02
+	NUD_STALE      = 0x04
+	NUD_DELAY      = 0x08
+	NUD_PROBE      = 0x10
+	NUD_FAILED     = 0x20
+	NUD_NOARP      = 0x40
+	NUD_PERMANENT  = 0x80
+)
+
+// Neighbor Flags
+const (
+	NTF_USE    = 0x01
+	NTF_SELF   = 0x02
+	NTF_MASTER = 0x04
+	NTF_PROXY  = 0x08
+	NTF_ROUTER = 0x80
+)
+
+type Ndmsg struct {
+	Family uint8
+	Index  uint32
+	State  uint16
+	Flags  uint8
+	Type   uint8
+}
+
+func deserializeNdmsg(b []byte) *Ndmsg {
+	var dummy Ndmsg
+	return (*Ndmsg)(unsafe.Pointer(&b[0:unsafe.Sizeof(dummy)][0]))
+}
+
+func (msg *Ndmsg) Serialize() []byte {
+	return (*(*[unsafe.Sizeof(*msg)]byte)(unsafe.Pointer(msg)))[:]
+}
+
+func (msg *Ndmsg) Len() int {
+	return int(unsafe.Sizeof(*msg))
+}
+
+// NeighAdd will add an IP to MAC mapping to the ARP table
+// Equivalent to: `ip neigh add ....`
+func NeighAdd(neigh *Neigh) error {
+	return neighAdd(neigh, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL)
+}
+
+// NeighSet will add or replace an IP to MAC mapping to the ARP table
+// Equivalent to: `ip neigh replace....`
+func NeighSet(neigh *Neigh) error {
+	return neighAdd(neigh, syscall.NLM_F_CREATE|syscall.NLM_F_REPLACE)
+}
+
+// NeighAppend will append an entry to FDB
+// Equivalent to: `bridge fdb append...`
+func NeighAppend(neigh *Neigh) error {
+	return neighAdd(neigh, syscall.NLM_F_CREATE|syscall.NLM_F_APPEND)
+}
+
+func neighAdd(neigh *Neigh, mode int) error {
+	req := nl.NewNetlinkRequest(syscall.RTM_NEWNEIGH, mode|syscall.NLM_F_ACK)
+	return neighHandle(neigh, req)
+}
+
+// NeighDel will delete an IP address from a link device.
+// Equivalent to: `ip addr del $addr dev $link`
+func NeighDel(neigh *Neigh) error {
+	req := nl.NewNetlinkRequest(syscall.RTM_DELNEIGH, syscall.NLM_F_ACK)
+	return neighHandle(neigh, req)
+}
+
+func neighHandle(neigh *Neigh, req *nl.NetlinkRequest) error {
+	var family int
+	if neigh.Family > 0 {
+		family = neigh.Family
+	} else {
+		family = nl.GetIPFamily(neigh.IP)
+	}
+
+	msg := Ndmsg{
+		Family: uint8(family),
+		Index:  uint32(neigh.LinkIndex),
+		State:  uint16(neigh.State),
+		Type:   uint8(neigh.Type),
+		Flags:  uint8(neigh.Flags),
+	}
+	req.AddData(&msg)
+
+	ipData := neigh.IP.To4()
+	if ipData == nil {
+		ipData = neigh.IP.To16()
+	}
+
+	dstData := nl.NewRtAttr(NDA_DST, ipData)
+	req.AddData(dstData)
+
+	hwData := nl.NewRtAttr(NDA_LLADDR, []byte(neigh.HardwareAddr))
+	req.AddData(hwData)
+
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	return err
+}
+
+// NeighList gets a list of IP-MAC mappings in the system (ARP table).
+// Equivalent to: `ip neighbor show`.
+// The list can be filtered by link and ip family.
+func NeighList(linkIndex, family int) ([]Neigh, error) {
+	req := nl.NewNetlinkRequest(syscall.RTM_GETNEIGH, syscall.NLM_F_DUMP)
+	msg := Ndmsg{
+		Family: uint8(family),
+		Index:  uint32(linkIndex),
+	}
+	req.AddData(&msg)
+
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWNEIGH)
+	if err != nil {
+		return nil, err
+	}
+
+	var res []Neigh
+	for _, m := range msgs {
+		ndm := deserializeNdmsg(m)
+		if linkIndex != 0 && int(ndm.Index) != linkIndex {
+			// Ignore messages from other interfaces
+			continue
+		}
+
+		neigh, err := NeighDeserialize(m)
+		if err != nil {
+			continue
+		}
+
+		res = append(res, *neigh)
+	}
+
+	return res, nil
+}
+
+func NeighDeserialize(m []byte) (*Neigh, error) {
+	msg := deserializeNdmsg(m)
+
+	neigh := Neigh{
+		LinkIndex: int(msg.Index),
+		Family:    int(msg.Family),
+		State:     int(msg.State),
+		Type:      int(msg.Type),
+		Flags:     int(msg.Flags),
+	}
+
+	attrs, err := nl.ParseRouteAttr(m[msg.Len():])
+	if err != nil {
+		return nil, err
+	}
+
+	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)
+		}
+	}
+
+	return &neigh, nil
+}

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

@@ -0,0 +1,42 @@
+// Package netlink provides a simple library for netlink. Netlink is
+// the interface a user-space program in linux uses to communicate with
+// the kernel. It can be used to add and remove interfaces, set up ip
+// addresses and routes, and confiugre ipsec. Netlink communication
+// requires elevated privileges, so in most cases this code needs to
+// be run as root. The low level primitives for netlink are contained
+// in the nl subpackage. This package attempts to provide a high-level
+// interface that is loosly modeled on the iproute2 cli.
+package netlink
+
+import (
+	"net"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// Family type definitions
+const (
+	FAMILY_ALL = nl.FAMILY_ALL
+	FAMILY_V4  = nl.FAMILY_V4
+	FAMILY_V6  = nl.FAMILY_V6
+)
+
+// ParseIPNet parses a string in ip/net format and returns a net.IPNet.
+// This is valuable because addresses in netlink are often IPNets and
+// ParseCIDR returns an IPNet with the IP part set to the base IP of the
+// range.
+func ParseIPNet(s string) (*net.IPNet, error) {
+	ip, ipNet, err := net.ParseCIDR(s)
+	if err != nil {
+		return nil, err
+	}
+	return &net.IPNet{IP: ip, Mask: ipNet.Mask}, nil
+}
+
+// NewIPNet generates an IPNet from an ip address using a netmask of 32 or 128.
+func NewIPNet(ip net.IP) *net.IPNet {
+	if ip.To4() != nil {
+		return &net.IPNet{IP: ip, Mask: net.CIDRMask(32, 32)}
+	}
+	return &net.IPNet{IP: ip, Mask: net.CIDRMask(128, 128)}
+}

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

@@ -0,0 +1,143 @@
+// +build !linux
+
+package netlink
+
+import (
+	"errors"
+)
+
+var (
+	ErrNotImplemented = errors.New("not implemented")
+)
+
+func LinkSetUp(link *Link) error {
+	return ErrNotImplemented
+}
+
+func LinkSetDown(link *Link) error {
+	return ErrNotImplemented
+}
+
+func LinkSetMTU(link *Link, mtu int) error {
+	return ErrNotImplemented
+}
+
+func LinkSetMaster(link *Link, master *Link) error {
+	return ErrNotImplemented
+}
+
+func LinkSetNsPid(link *Link, nspid int) error {
+	return ErrNotImplemented
+}
+
+func LinkSetNsFd(link *Link, fd int) error {
+	return ErrNotImplemented
+}
+
+func LinkAdd(link *Link) error {
+	return ErrNotImplemented
+}
+
+func LinkDel(link *Link) error {
+	return ErrNotImplemented
+}
+
+func SetHairpin(link Link, mode bool) error {
+	return ErrNotImplemented
+}
+
+func SetGuard(link Link, mode bool) error {
+	return ErrNotImplemented
+}
+
+func SetFastLeave(link Link, mode bool) error {
+	return ErrNotImplemented
+}
+
+func SetLearning(link Link, mode bool) error {
+	return ErrNotImplemented
+}
+
+func SetRootBlock(link Link, mode bool) error {
+	return ErrNotImplemented
+}
+
+func SetFlood(link Link, mode bool) error {
+	return ErrNotImplemented
+}
+
+func LinkList() ([]Link, error) {
+	return nil, ErrNotImplemented
+}
+
+func AddrAdd(link *Link, addr *Addr) error {
+	return ErrNotImplemented
+}
+
+func AddrDel(link *Link, addr *Addr) error {
+	return ErrNotImplemented
+}
+
+func AddrList(link *Link, family int) ([]Addr, error) {
+	return nil, ErrNotImplemented
+}
+
+func RouteAdd(route *Route) error {
+	return ErrNotImplemented
+}
+
+func RouteDel(route *Route) error {
+	return ErrNotImplemented
+}
+
+func RouteList(link *Link, family int) ([]Route, error) {
+	return nil, ErrNotImplemented
+}
+
+func XfrmPolicyAdd(policy *XfrmPolicy) error {
+	return ErrNotImplemented
+}
+
+func XfrmPolicyDel(policy *XfrmPolicy) error {
+	return ErrNotImplemented
+}
+
+func XfrmPolicyList(family int) ([]XfrmPolicy, error) {
+	return nil, ErrNotImplemented
+}
+
+func XfrmStateAdd(policy *XfrmState) error {
+	return ErrNotImplemented
+}
+
+func XfrmStateDel(policy *XfrmState) error {
+	return ErrNotImplemented
+}
+
+func XfrmStateList(family int) ([]XfrmState, error) {
+	return nil, ErrNotImplemented
+}
+
+func NeighAdd(neigh *Neigh) error {
+	return ErrNotImplemented
+}
+
+func NeighSet(neigh *Neigh) error {
+	return ErrNotImplemented
+}
+
+func NeighAppend(neigh *Neigh) error {
+	return ErrNotImplemented
+}
+
+func NeighDel(neigh *Neigh) error {
+	return ErrNotImplemented
+}
+
+func NeighList(linkIndex, family int) ([]Neigh, error) {
+	return nil, ErrNotImplemented
+}
+
+func NeighDeserialize(m []byte) (*Ndmsg, *Neigh, error) {
+	return nil, nil, ErrNotImplemented
+}

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

@@ -0,0 +1,47 @@
+package nl
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+type IfAddrmsg struct {
+	syscall.IfAddrmsg
+}
+
+func NewIfAddrmsg(family int) *IfAddrmsg {
+	return &IfAddrmsg{
+		IfAddrmsg: syscall.IfAddrmsg{
+			Family: uint8(family),
+		},
+	}
+}
+
+// struct ifaddrmsg {
+//   __u8    ifa_family;
+//   __u8    ifa_prefixlen;  /* The prefix length    */
+//   __u8    ifa_flags;  /* Flags      */
+//   __u8    ifa_scope;  /* Address scope    */
+//   __u32   ifa_index;  /* Link index     */
+// };
+
+// type IfAddrmsg struct {
+// 	Family    uint8
+// 	Prefixlen uint8
+// 	Flags     uint8
+// 	Scope     uint8
+// 	Index     uint32
+// }
+// SizeofIfAddrmsg     = 0x8
+
+func DeserializeIfAddrmsg(b []byte) *IfAddrmsg {
+	return (*IfAddrmsg)(unsafe.Pointer(&b[0:syscall.SizeofIfAddrmsg][0]))
+}
+
+func (msg *IfAddrmsg) Serialize() []byte {
+	return (*(*[syscall.SizeofIfAddrmsg]byte)(unsafe.Pointer(msg)))[:]
+}
+
+func (msg *IfAddrmsg) Len() int {
+	return syscall.SizeofIfAddrmsg
+}

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

@@ -0,0 +1,396 @@
+package nl
+
+import (
+	"unsafe"
+)
+
+const (
+	DEFAULT_CHANGE = 0xFFFFFFFF
+	// doesn't exist in syscall
+	IFLA_VFINFO_LIST = 0x16
+)
+
+const (
+	IFLA_INFO_UNSPEC = iota
+	IFLA_INFO_KIND
+	IFLA_INFO_DATA
+	IFLA_INFO_XSTATS
+	IFLA_INFO_MAX = IFLA_INFO_XSTATS
+)
+
+const (
+	IFLA_VLAN_UNSPEC = iota
+	IFLA_VLAN_ID
+	IFLA_VLAN_FLAGS
+	IFLA_VLAN_EGRESS_QOS
+	IFLA_VLAN_INGRESS_QOS
+	IFLA_VLAN_PROTOCOL
+	IFLA_VLAN_MAX = IFLA_VLAN_PROTOCOL
+)
+
+const (
+	VETH_INFO_UNSPEC = iota
+	VETH_INFO_PEER
+	VETH_INFO_MAX = VETH_INFO_PEER
+)
+
+const (
+	IFLA_VXLAN_UNSPEC = iota
+	IFLA_VXLAN_ID
+	IFLA_VXLAN_GROUP
+	IFLA_VXLAN_LINK
+	IFLA_VXLAN_LOCAL
+	IFLA_VXLAN_TTL
+	IFLA_VXLAN_TOS
+	IFLA_VXLAN_LEARNING
+	IFLA_VXLAN_AGEING
+	IFLA_VXLAN_LIMIT
+	IFLA_VXLAN_PORT_RANGE
+	IFLA_VXLAN_PROXY
+	IFLA_VXLAN_RSC
+	IFLA_VXLAN_L2MISS
+	IFLA_VXLAN_L3MISS
+	IFLA_VXLAN_PORT
+	IFLA_VXLAN_GROUP6
+	IFLA_VXLAN_LOCAL6
+	IFLA_VXLAN_UDP_CSUM
+	IFLA_VXLAN_UDP_ZERO_CSUM6_TX
+	IFLA_VXLAN_UDP_ZERO_CSUM6_RX
+	IFLA_VXLAN_REMCSUM_TX
+	IFLA_VXLAN_REMCSUM_RX
+	IFLA_VXLAN_GBP
+	IFLA_VXLAN_REMCSUM_NOPARTIAL
+	IFLA_VXLAN_FLOWBASED
+	IFLA_VXLAN_MAX = IFLA_VXLAN_FLOWBASED
+)
+
+const (
+	BRIDGE_MODE_UNSPEC = iota
+	BRIDGE_MODE_HAIRPIN
+)
+
+const (
+	IFLA_BRPORT_UNSPEC = iota
+	IFLA_BRPORT_STATE
+	IFLA_BRPORT_PRIORITY
+	IFLA_BRPORT_COST
+	IFLA_BRPORT_MODE
+	IFLA_BRPORT_GUARD
+	IFLA_BRPORT_PROTECT
+	IFLA_BRPORT_FAST_LEAVE
+	IFLA_BRPORT_LEARNING
+	IFLA_BRPORT_UNICAST_FLOOD
+	IFLA_BRPORT_MAX = IFLA_BRPORT_UNICAST_FLOOD
+)
+
+const (
+	IFLA_IPVLAN_UNSPEC = iota
+	IFLA_IPVLAN_MODE
+	IFLA_IPVLAN_MAX = IFLA_IPVLAN_MODE
+)
+
+const (
+	// not defined in syscall
+	IFLA_NET_NS_FD = 28
+)
+
+const (
+	IFLA_MACVLAN_UNSPEC = iota
+	IFLA_MACVLAN_MODE
+	IFLA_MACVLAN_FLAGS
+	IFLA_MACVLAN_MAX = IFLA_MACVLAN_FLAGS
+)
+
+const (
+	MACVLAN_MODE_PRIVATE  = 1
+	MACVLAN_MODE_VEPA     = 2
+	MACVLAN_MODE_BRIDGE   = 4
+	MACVLAN_MODE_PASSTHRU = 8
+	MACVLAN_MODE_SOURCE   = 16
+)
+
+const (
+	IFLA_BOND_UNSPEC = iota
+	IFLA_BOND_MODE
+	IFLA_BOND_ACTIVE_SLAVE
+	IFLA_BOND_MIIMON
+	IFLA_BOND_UPDELAY
+	IFLA_BOND_DOWNDELAY
+	IFLA_BOND_USE_CARRIER
+	IFLA_BOND_ARP_INTERVAL
+	IFLA_BOND_ARP_IP_TARGET
+	IFLA_BOND_ARP_VALIDATE
+	IFLA_BOND_ARP_ALL_TARGETS
+	IFLA_BOND_PRIMARY
+	IFLA_BOND_PRIMARY_RESELECT
+	IFLA_BOND_FAIL_OVER_MAC
+	IFLA_BOND_XMIT_HASH_POLICY
+	IFLA_BOND_RESEND_IGMP
+	IFLA_BOND_NUM_PEER_NOTIF
+	IFLA_BOND_ALL_SLAVES_ACTIVE
+	IFLA_BOND_MIN_LINKS
+	IFLA_BOND_LP_INTERVAL
+	IFLA_BOND_PACKETS_PER_SLAVE
+	IFLA_BOND_AD_LACP_RATE
+	IFLA_BOND_AD_SELECT
+	IFLA_BOND_AD_INFO
+)
+
+const (
+	IFLA_BOND_AD_INFO_UNSPEC = iota
+	IFLA_BOND_AD_INFO_AGGREGATOR
+	IFLA_BOND_AD_INFO_NUM_PORTS
+	IFLA_BOND_AD_INFO_ACTOR_KEY
+	IFLA_BOND_AD_INFO_PARTNER_KEY
+	IFLA_BOND_AD_INFO_PARTNER_MAC
+)
+
+const (
+	IFLA_BOND_SLAVE_UNSPEC = iota
+	IFLA_BOND_SLAVE_STATE
+	IFLA_BOND_SLAVE_MII_STATUS
+	IFLA_BOND_SLAVE_LINK_FAILURE_COUNT
+	IFLA_BOND_SLAVE_PERM_HWADDR
+	IFLA_BOND_SLAVE_QUEUE_ID
+	IFLA_BOND_SLAVE_AD_AGGREGATOR_ID
+)
+
+const (
+	IFLA_GRE_UNSPEC = iota
+	IFLA_GRE_LINK
+	IFLA_GRE_IFLAGS
+	IFLA_GRE_OFLAGS
+	IFLA_GRE_IKEY
+	IFLA_GRE_OKEY
+	IFLA_GRE_LOCAL
+	IFLA_GRE_REMOTE
+	IFLA_GRE_TTL
+	IFLA_GRE_TOS
+	IFLA_GRE_PMTUDISC
+	IFLA_GRE_ENCAP_LIMIT
+	IFLA_GRE_FLOWINFO
+	IFLA_GRE_FLAGS
+	IFLA_GRE_ENCAP_TYPE
+	IFLA_GRE_ENCAP_FLAGS
+	IFLA_GRE_ENCAP_SPORT
+	IFLA_GRE_ENCAP_DPORT
+	IFLA_GRE_COLLECT_METADATA
+	IFLA_GRE_MAX = IFLA_GRE_COLLECT_METADATA
+)
+
+const (
+	GRE_CSUM    = 0x8000
+	GRE_ROUTING = 0x4000
+	GRE_KEY     = 0x2000
+	GRE_SEQ     = 0x1000
+	GRE_STRICT  = 0x0800
+	GRE_REC     = 0x0700
+	GRE_FLAGS   = 0x00F8
+	GRE_VERSION = 0x0007
+)
+
+const (
+	IFLA_VF_INFO_UNSPEC = iota
+	IFLA_VF_INFO
+	IFLA_VF_INFO_MAX = IFLA_VF_INFO
+)
+
+const (
+	IFLA_VF_UNSPEC = iota
+	IFLA_VF_MAC    /* Hardware queue specific attributes */
+	IFLA_VF_VLAN
+	IFLA_VF_TX_RATE      /* Max TX Bandwidth Allocation */
+	IFLA_VF_SPOOFCHK     /* Spoof Checking on/off switch */
+	IFLA_VF_LINK_STATE   /* link state enable/disable/auto switch */
+	IFLA_VF_RATE         /* Min and Max TX Bandwidth Allocation */
+	IFLA_VF_RSS_QUERY_EN /* RSS Redirection Table and Hash Key query
+	 * on/off switch
+	 */
+	IFLA_VF_STATS /* network device statistics */
+	IFLA_VF_MAX   = IFLA_VF_STATS
+)
+
+const (
+	IFLA_VF_LINK_STATE_AUTO    = iota /* link state of the uplink */
+	IFLA_VF_LINK_STATE_ENABLE         /* link always up */
+	IFLA_VF_LINK_STATE_DISABLE        /* link always down */
+	IFLA_VF_LINK_STATE_MAX     = IFLA_VF_LINK_STATE_DISABLE
+)
+
+const (
+	IFLA_VF_STATS_RX_PACKETS = iota
+	IFLA_VF_STATS_TX_PACKETS
+	IFLA_VF_STATS_RX_BYTES
+	IFLA_VF_STATS_TX_BYTES
+	IFLA_VF_STATS_BROADCAST
+	IFLA_VF_STATS_MULTICAST
+	IFLA_VF_STATS_MAX = IFLA_VF_STATS_MULTICAST
+)
+
+const (
+	SizeofVfMac        = 0x24
+	SizeofVfVlan       = 0x0c
+	SizeofVfTxRate     = 0x08
+	SizeofVfRate       = 0x0c
+	SizeofVfSpoofchk   = 0x08
+	SizeofVfLinkState  = 0x08
+	SizeofVfRssQueryEn = 0x08
+)
+
+// struct ifla_vf_mac {
+//   __u32 vf;
+//   __u8 mac[32]; /* MAX_ADDR_LEN */
+// };
+
+type VfMac struct {
+	Vf  uint32
+	Mac [32]byte
+}
+
+func (msg *VfMac) Len() int {
+	return SizeofVfMac
+}
+
+func DeserializeVfMac(b []byte) *VfMac {
+	return (*VfMac)(unsafe.Pointer(&b[0:SizeofVfMac][0]))
+}
+
+func (msg *VfMac) Serialize() []byte {
+	return (*(*[SizeofVfMac]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct ifla_vf_vlan {
+//   __u32 vf;
+//   __u32 vlan; /* 0 - 4095, 0 disables VLAN filter */
+//   __u32 qos;
+// };
+
+type VfVlan struct {
+	Vf   uint32
+	Vlan uint32
+	Qos  uint32
+}
+
+func (msg *VfVlan) Len() int {
+	return SizeofVfVlan
+}
+
+func DeserializeVfVlan(b []byte) *VfVlan {
+	return (*VfVlan)(unsafe.Pointer(&b[0:SizeofVfVlan][0]))
+}
+
+func (msg *VfVlan) Serialize() []byte {
+	return (*(*[SizeofVfVlan]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct ifla_vf_tx_rate {
+//   __u32 vf;
+//   __u32 rate; /* Max TX bandwidth in Mbps, 0 disables throttling */
+// };
+
+type VfTxRate struct {
+	Vf   uint32
+	Rate uint32
+}
+
+func (msg *VfTxRate) Len() int {
+	return SizeofVfTxRate
+}
+
+func DeserializeVfTxRate(b []byte) *VfTxRate {
+	return (*VfTxRate)(unsafe.Pointer(&b[0:SizeofVfTxRate][0]))
+}
+
+func (msg *VfTxRate) Serialize() []byte {
+	return (*(*[SizeofVfTxRate]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct ifla_vf_rate {
+//   __u32 vf;
+//   __u32 min_tx_rate; /* Min Bandwidth in Mbps */
+//   __u32 max_tx_rate; /* Max Bandwidth in Mbps */
+// };
+
+type VfRate struct {
+	Vf        uint32
+	MinTxRate uint32
+	MaxTxRate uint32
+}
+
+func (msg *VfRate) Len() int {
+	return SizeofVfRate
+}
+
+func DeserializeVfRate(b []byte) *VfRate {
+	return (*VfRate)(unsafe.Pointer(&b[0:SizeofVfRate][0]))
+}
+
+func (msg *VfRate) Serialize() []byte {
+	return (*(*[SizeofVfRate]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct ifla_vf_spoofchk {
+//   __u32 vf;
+//   __u32 setting;
+// };
+
+type VfSpoofchk struct {
+	Vf      uint32
+	Setting uint32
+}
+
+func (msg *VfSpoofchk) Len() int {
+	return SizeofVfSpoofchk
+}
+
+func DeserializeVfSpoofchk(b []byte) *VfSpoofchk {
+	return (*VfSpoofchk)(unsafe.Pointer(&b[0:SizeofVfSpoofchk][0]))
+}
+
+func (msg *VfSpoofchk) Serialize() []byte {
+	return (*(*[SizeofVfSpoofchk]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct ifla_vf_link_state {
+//   __u32 vf;
+//   __u32 link_state;
+// };
+
+type VfLinkState struct {
+	Vf        uint32
+	LinkState uint32
+}
+
+func (msg *VfLinkState) Len() int {
+	return SizeofVfLinkState
+}
+
+func DeserializeVfLinkState(b []byte) *VfLinkState {
+	return (*VfLinkState)(unsafe.Pointer(&b[0:SizeofVfLinkState][0]))
+}
+
+func (msg *VfLinkState) Serialize() []byte {
+	return (*(*[SizeofVfLinkState]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct ifla_vf_rss_query_en {
+//   __u32 vf;
+//   __u32 setting;
+// };
+
+type VfRssQueryEn struct {
+	Vf      uint32
+	Setting uint32
+}
+
+func (msg *VfRssQueryEn) Len() int {
+	return SizeofVfRssQueryEn
+}
+
+func DeserializeVfRssQueryEn(b []byte) *VfRssQueryEn {
+	return (*VfRssQueryEn)(unsafe.Pointer(&b[0:SizeofVfRssQueryEn][0]))
+}
+
+func (msg *VfRssQueryEn) Serialize() []byte {
+	return (*(*[SizeofVfRssQueryEn]byte)(unsafe.Pointer(msg)))[:]
+}

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

@@ -0,0 +1,424 @@
+// Package nl has low level primitives for making Netlink calls.
+package nl
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"net"
+	"sync/atomic"
+	"syscall"
+	"unsafe"
+)
+
+const (
+	// Family type definitions
+	FAMILY_ALL = syscall.AF_UNSPEC
+	FAMILY_V4  = syscall.AF_INET
+	FAMILY_V6  = syscall.AF_INET6
+)
+
+var nextSeqNr uint32
+
+// GetIPFamily returns the family type of a net.IP.
+func GetIPFamily(ip net.IP) int {
+	if len(ip) <= net.IPv4len {
+		return FAMILY_V4
+	}
+	if ip.To4() != nil {
+		return FAMILY_V4
+	}
+	return FAMILY_V6
+}
+
+var nativeEndian binary.ByteOrder
+
+// Get native endianness for the system
+func NativeEndian() binary.ByteOrder {
+	if nativeEndian == nil {
+		var x uint32 = 0x01020304
+		if *(*byte)(unsafe.Pointer(&x)) == 0x01 {
+			nativeEndian = binary.BigEndian
+		} else {
+			nativeEndian = binary.LittleEndian
+		}
+	}
+	return nativeEndian
+}
+
+// Byte swap a 16 bit value if we aren't big endian
+func Swap16(i uint16) uint16 {
+	if NativeEndian() == binary.BigEndian {
+		return i
+	}
+	return (i&0xff00)>>8 | (i&0xff)<<8
+}
+
+// Byte swap a 32 bit value if aren't big endian
+func Swap32(i uint32) uint32 {
+	if NativeEndian() == binary.BigEndian {
+		return i
+	}
+	return (i&0xff000000)>>24 | (i&0xff0000)>>8 | (i&0xff00)<<8 | (i&0xff)<<24
+}
+
+type NetlinkRequestData interface {
+	Len() int
+	Serialize() []byte
+}
+
+// IfInfomsg is related to links, but it is used for list requests as well
+type IfInfomsg struct {
+	syscall.IfInfomsg
+}
+
+// Create an IfInfomsg with family specified
+func NewIfInfomsg(family int) *IfInfomsg {
+	return &IfInfomsg{
+		IfInfomsg: syscall.IfInfomsg{
+			Family: uint8(family),
+		},
+	}
+}
+
+func DeserializeIfInfomsg(b []byte) *IfInfomsg {
+	return (*IfInfomsg)(unsafe.Pointer(&b[0:syscall.SizeofIfInfomsg][0]))
+}
+
+func (msg *IfInfomsg) Serialize() []byte {
+	return (*(*[syscall.SizeofIfInfomsg]byte)(unsafe.Pointer(msg)))[:]
+}
+
+func (msg *IfInfomsg) Len() int {
+	return syscall.SizeofIfInfomsg
+}
+
+func rtaAlignOf(attrlen int) int {
+	return (attrlen + syscall.RTA_ALIGNTO - 1) & ^(syscall.RTA_ALIGNTO - 1)
+}
+
+func NewIfInfomsgChild(parent *RtAttr, family int) *IfInfomsg {
+	msg := NewIfInfomsg(family)
+	parent.children = append(parent.children, msg)
+	return msg
+}
+
+// Extend RtAttr to handle data and children
+type RtAttr struct {
+	syscall.RtAttr
+	Data     []byte
+	children []NetlinkRequestData
+}
+
+// Create a new Extended RtAttr object
+func NewRtAttr(attrType int, data []byte) *RtAttr {
+	return &RtAttr{
+		RtAttr: syscall.RtAttr{
+			Type: uint16(attrType),
+		},
+		children: []NetlinkRequestData{},
+		Data:     data,
+	}
+}
+
+// Create a new RtAttr obj anc add it as a child of an existing object
+func NewRtAttrChild(parent *RtAttr, attrType int, data []byte) *RtAttr {
+	attr := NewRtAttr(attrType, data)
+	parent.children = append(parent.children, attr)
+	return attr
+}
+
+func (a *RtAttr) Len() int {
+	if len(a.children) == 0 {
+		return (syscall.SizeofRtAttr + len(a.Data))
+	}
+
+	l := 0
+	for _, child := range a.children {
+		l += rtaAlignOf(child.Len())
+	}
+	l += syscall.SizeofRtAttr
+	return rtaAlignOf(l + len(a.Data))
+}
+
+// Serialize the RtAttr into a byte array
+// This can't just unsafe.cast because it must iterate through children.
+func (a *RtAttr) Serialize() []byte {
+	native := NativeEndian()
+
+	length := a.Len()
+	buf := make([]byte, rtaAlignOf(length))
+
+	next := 4
+	if a.Data != nil {
+		copy(buf[next:], a.Data)
+		next += rtaAlignOf(len(a.Data))
+	}
+	if len(a.children) > 0 {
+		for _, child := range a.children {
+			childBuf := child.Serialize()
+			copy(buf[next:], childBuf)
+			next += rtaAlignOf(len(childBuf))
+		}
+	}
+
+	if l := uint16(length); l != 0 {
+		native.PutUint16(buf[0:2], l)
+	}
+	native.PutUint16(buf[2:4], a.Type)
+	return buf
+}
+
+type NetlinkRequest struct {
+	syscall.NlMsghdr
+	Data []NetlinkRequestData
+}
+
+// Serialize the Netlink Request into a byte array
+func (req *NetlinkRequest) Serialize() []byte {
+	length := syscall.SizeofNlMsghdr
+	dataBytes := make([][]byte, len(req.Data))
+	for i, data := range req.Data {
+		dataBytes[i] = data.Serialize()
+		length = length + len(dataBytes[i])
+	}
+	req.Len = uint32(length)
+	b := make([]byte, length)
+	hdr := (*(*[syscall.SizeofNlMsghdr]byte)(unsafe.Pointer(req)))[:]
+	next := syscall.SizeofNlMsghdr
+	copy(b[0:next], hdr)
+	for _, data := range dataBytes {
+		for _, dataByte := range data {
+			b[next] = dataByte
+			next = next + 1
+		}
+	}
+	return b
+}
+
+func (req *NetlinkRequest) AddData(data NetlinkRequestData) {
+	if data != nil {
+		req.Data = append(req.Data, data)
+	}
+}
+
+// Execute the request against a the given sockType.
+// Returns a list of netlink messages in seriaized format, optionally filtered
+// by resType.
+func (req *NetlinkRequest) Execute(sockType int, resType uint16) ([][]byte, error) {
+	s, err := getNetlinkSocket(sockType)
+	if err != nil {
+		return nil, err
+	}
+	defer s.Close()
+
+	if err := s.Send(req); err != nil {
+		return nil, err
+	}
+
+	pid, err := s.GetPid()
+	if err != nil {
+		return nil, err
+	}
+
+	var res [][]byte
+
+done:
+	for {
+		msgs, err := s.Receive()
+		if err != nil {
+			return nil, err
+		}
+		for _, m := range msgs {
+			if m.Header.Seq != req.Seq {
+				return nil, fmt.Errorf("Wrong Seq nr %d, expected 1", m.Header.Seq)
+			}
+			if m.Header.Pid != pid {
+				return nil, fmt.Errorf("Wrong pid %d, expected %d", m.Header.Pid, pid)
+			}
+			if m.Header.Type == syscall.NLMSG_DONE {
+				break done
+			}
+			if m.Header.Type == syscall.NLMSG_ERROR {
+				native := NativeEndian()
+				error := int32(native.Uint32(m.Data[0:4]))
+				if error == 0 {
+					break done
+				}
+				return nil, syscall.Errno(-error)
+			}
+			if resType != 0 && m.Header.Type != resType {
+				continue
+			}
+			res = append(res, m.Data)
+			if m.Header.Flags&syscall.NLM_F_MULTI == 0 {
+				break done
+			}
+		}
+	}
+	return res, nil
+}
+
+// Create a new netlink request from proto and flags
+// Note the Len value will be inaccurate once data is added until
+// the message is serialized
+func NewNetlinkRequest(proto, flags int) *NetlinkRequest {
+	return &NetlinkRequest{
+		NlMsghdr: syscall.NlMsghdr{
+			Len:   uint32(syscall.SizeofNlMsghdr),
+			Type:  uint16(proto),
+			Flags: syscall.NLM_F_REQUEST | uint16(flags),
+			Seq:   atomic.AddUint32(&nextSeqNr, 1),
+		},
+	}
+}
+
+type NetlinkSocket struct {
+	fd  int
+	lsa syscall.SockaddrNetlink
+}
+
+func getNetlinkSocket(protocol int) (*NetlinkSocket, error) {
+	fd, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_RAW, protocol)
+	if err != nil {
+		return nil, err
+	}
+	s := &NetlinkSocket{
+		fd: fd,
+	}
+	s.lsa.Family = syscall.AF_NETLINK
+	if err := syscall.Bind(fd, &s.lsa); err != nil {
+		syscall.Close(fd)
+		return nil, err
+	}
+
+	return s, nil
+}
+
+// Create a netlink socket with a given protocol (e.g. NETLINK_ROUTE)
+// and subscribe it to multicast groups passed in variable argument list.
+// Returns the netlink socket on which Receive() method can be called
+// to retrieve the messages from the kernel.
+func Subscribe(protocol int, groups ...uint) (*NetlinkSocket, error) {
+	fd, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_RAW, protocol)
+	if err != nil {
+		return nil, err
+	}
+	s := &NetlinkSocket{
+		fd: fd,
+	}
+	s.lsa.Family = syscall.AF_NETLINK
+
+	for _, g := range groups {
+		s.lsa.Groups |= (1 << (g - 1))
+	}
+
+	if err := syscall.Bind(fd, &s.lsa); err != nil {
+		syscall.Close(fd)
+		return nil, err
+	}
+
+	return s, nil
+}
+
+func (s *NetlinkSocket) Close() {
+	syscall.Close(s.fd)
+}
+
+func (s *NetlinkSocket) GetFd() int {
+	return s.fd
+}
+
+func (s *NetlinkSocket) Send(request *NetlinkRequest) error {
+	if err := syscall.Sendto(s.fd, request.Serialize(), 0, &s.lsa); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (s *NetlinkSocket) Receive() ([]syscall.NetlinkMessage, error) {
+	rb := make([]byte, syscall.Getpagesize())
+	nr, _, err := syscall.Recvfrom(s.fd, rb, 0)
+	if err != nil {
+		return nil, err
+	}
+	if nr < syscall.NLMSG_HDRLEN {
+		return nil, fmt.Errorf("Got short response from netlink")
+	}
+	rb = rb[:nr]
+	return syscall.ParseNetlinkMessage(rb)
+}
+
+func (s *NetlinkSocket) GetPid() (uint32, error) {
+	lsa, err := syscall.Getsockname(s.fd)
+	if err != nil {
+		return 0, err
+	}
+	switch v := lsa.(type) {
+	case *syscall.SockaddrNetlink:
+		return v.Pid, nil
+	}
+	return 0, fmt.Errorf("Wrong socket type")
+}
+
+func ZeroTerminated(s string) []byte {
+	bytes := make([]byte, len(s)+1)
+	for i := 0; i < len(s); i++ {
+		bytes[i] = s[i]
+	}
+	bytes[len(s)] = 0
+	return bytes
+}
+
+func NonZeroTerminated(s string) []byte {
+	bytes := make([]byte, len(s))
+	for i := 0; i < len(s); i++ {
+		bytes[i] = s[i]
+	}
+	return bytes
+}
+
+func BytesToString(b []byte) string {
+	n := bytes.Index(b, []byte{0})
+	return string(b[:n])
+}
+
+func Uint8Attr(v uint8) []byte {
+	return []byte{byte(v)}
+}
+
+func Uint16Attr(v uint16) []byte {
+	native := NativeEndian()
+	bytes := make([]byte, 2)
+	native.PutUint16(bytes, v)
+	return bytes
+}
+
+func Uint32Attr(v uint32) []byte {
+	native := NativeEndian()
+	bytes := make([]byte, 4)
+	native.PutUint32(bytes, v)
+	return bytes
+}
+
+func ParseRouteAttr(b []byte) ([]syscall.NetlinkRouteAttr, error) {
+	var attrs []syscall.NetlinkRouteAttr
+	for len(b) >= syscall.SizeofRtAttr {
+		a, vbuf, alen, err := netlinkRouteAttrAndValue(b)
+		if err != nil {
+			return nil, err
+		}
+		ra := syscall.NetlinkRouteAttr{Attr: *a, Value: vbuf[:int(a.Len)-syscall.SizeofRtAttr]}
+		attrs = append(attrs, ra)
+		b = b[alen:]
+	}
+	return attrs, nil
+}
+
+func netlinkRouteAttrAndValue(b []byte) (*syscall.RtAttr, []byte, int, error) {
+	a := (*syscall.RtAttr)(unsafe.Pointer(&b[0]))
+	if int(a.Len) < syscall.SizeofRtAttr || int(a.Len) > len(b) {
+		return nil, nil, 0, syscall.EINVAL
+	}
+	return a, b[syscall.SizeofRtAttr:], rtaAlignOf(int(a.Len)), nil
+}

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

@@ -0,0 +1,42 @@
+package nl
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+type RtMsg struct {
+	syscall.RtMsg
+}
+
+func NewRtMsg() *RtMsg {
+	return &RtMsg{
+		RtMsg: syscall.RtMsg{
+			Table:    syscall.RT_TABLE_MAIN,
+			Scope:    syscall.RT_SCOPE_UNIVERSE,
+			Protocol: syscall.RTPROT_BOOT,
+			Type:     syscall.RTN_UNICAST,
+		},
+	}
+}
+
+func NewRtDelMsg() *RtMsg {
+	return &RtMsg{
+		RtMsg: syscall.RtMsg{
+			Table: syscall.RT_TABLE_MAIN,
+			Scope: syscall.RT_SCOPE_NOWHERE,
+		},
+	}
+}
+
+func (msg *RtMsg) Len() int {
+	return syscall.SizeofRtMsg
+}
+
+func DeserializeRtMsg(b []byte) *RtMsg {
+	return (*RtMsg)(unsafe.Pointer(&b[0:syscall.SizeofRtMsg][0]))
+}
+
+func (msg *RtMsg) Serialize() []byte {
+	return (*(*[syscall.SizeofRtMsg]byte)(unsafe.Pointer(msg)))[:]
+}

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

@@ -0,0 +1,37 @@
+package nl
+
+// syscall package lack of rule atributes type.
+// Thus there are defined below
+const (
+	FRA_UNSPEC  = iota
+	FRA_DST     /* destination address */
+	FRA_SRC     /* source address */
+	FRA_IIFNAME /* interface name */
+	FRA_GOTO    /* target to jump to (FR_ACT_GOTO) */
+	FRA_UNUSED2
+	FRA_PRIORITY /* priority/preference */
+	FRA_UNUSED3
+	FRA_UNUSED4
+	FRA_UNUSED5
+	FRA_FWMARK /* mark */
+	FRA_FLOW   /* flow/class id */
+	FRA_TUN_ID
+	FRA_SUPPRESS_IFGROUP
+	FRA_SUPPRESS_PREFIXLEN
+	FRA_TABLE  /* Extended table id */
+	FRA_FWMASK /* mask for netfilter mark */
+	FRA_OIFNAME
+)
+
+// ip rule netlink request types
+const (
+	FR_ACT_UNSPEC = iota
+	FR_ACT_TO_TBL /* Pass to fixed table */
+	FR_ACT_GOTO   /* Jump to another rule */
+	FR_ACT_NOP    /* No operation */
+	FR_ACT_RES3
+	FR_ACT_RES4
+	FR_ACT_BLACKHOLE   /* Drop without notification */
+	FR_ACT_UNREACHABLE /* Drop with ENETUNREACH */
+	FR_ACT_PROHIBIT    /* Drop with EACCES */
+)

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

@@ -0,0 +1,686 @@
+package nl
+
+import (
+	"unsafe"
+)
+
+// LinkLayer
+const (
+	LINKLAYER_UNSPEC = iota
+	LINKLAYER_ETHERNET
+	LINKLAYER_ATM
+)
+
+// ATM
+const (
+	ATM_CELL_PAYLOAD = 48
+	ATM_CELL_SIZE    = 53
+)
+
+const TC_LINKLAYER_MASK = 0x0F
+
+// Police
+const (
+	TCA_POLICE_UNSPEC = iota
+	TCA_POLICE_TBF
+	TCA_POLICE_RATE
+	TCA_POLICE_PEAKRATE
+	TCA_POLICE_AVRATE
+	TCA_POLICE_RESULT
+	TCA_POLICE_MAX = TCA_POLICE_RESULT
+)
+
+// Message types
+const (
+	TCA_UNSPEC = iota
+	TCA_KIND
+	TCA_OPTIONS
+	TCA_STATS
+	TCA_XSTATS
+	TCA_RATE
+	TCA_FCNT
+	TCA_STATS2
+	TCA_STAB
+	TCA_MAX = TCA_STAB
+)
+
+const (
+	TCA_ACT_TAB = 1
+	TCAA_MAX    = 1
+)
+
+const (
+	TCA_ACT_UNSPEC = iota
+	TCA_ACT_KIND
+	TCA_ACT_OPTIONS
+	TCA_ACT_INDEX
+	TCA_ACT_STATS
+	TCA_ACT_MAX
+)
+
+const (
+	TCA_PRIO_UNSPEC = iota
+	TCA_PRIO_MQ
+	TCA_PRIO_MAX = TCA_PRIO_MQ
+)
+
+const (
+	SizeofTcMsg          = 0x14
+	SizeofTcActionMsg    = 0x04
+	SizeofTcPrioMap      = 0x14
+	SizeofTcRateSpec     = 0x0c
+	SizeofTcNetemQopt    = 0x18
+	SizeofTcNetemCorr    = 0x0c
+	SizeofTcNetemReorder = 0x08
+	SizeofTcNetemCorrupt = 0x08
+	SizeofTcTbfQopt      = 2*SizeofTcRateSpec + 0x0c
+	SizeofTcHtbCopt      = 2*SizeofTcRateSpec + 0x14
+	SizeofTcHtbGlob      = 0x14
+	SizeofTcU32Key       = 0x10
+	SizeofTcU32Sel       = 0x10 // without keys
+	SizeofTcActBpf       = 0x14
+	SizeofTcMirred       = 0x1c
+	SizeofTcPolice       = 2*SizeofTcRateSpec + 0x20
+)
+
+// struct tcmsg {
+//   unsigned char tcm_family;
+//   unsigned char tcm__pad1;
+//   unsigned short  tcm__pad2;
+//   int   tcm_ifindex;
+//   __u32   tcm_handle;
+//   __u32   tcm_parent;
+//   __u32   tcm_info;
+// };
+
+type TcMsg struct {
+	Family  uint8
+	Pad     [3]byte
+	Ifindex int32
+	Handle  uint32
+	Parent  uint32
+	Info    uint32
+}
+
+func (msg *TcMsg) Len() int {
+	return SizeofTcMsg
+}
+
+func DeserializeTcMsg(b []byte) *TcMsg {
+	return (*TcMsg)(unsafe.Pointer(&b[0:SizeofTcMsg][0]))
+}
+
+func (x *TcMsg) Serialize() []byte {
+	return (*(*[SizeofTcMsg]byte)(unsafe.Pointer(x)))[:]
+}
+
+// struct tcamsg {
+//   unsigned char tca_family;
+//   unsigned char tca__pad1;
+//   unsigned short  tca__pad2;
+// };
+
+type TcActionMsg struct {
+	Family uint8
+	Pad    [3]byte
+}
+
+func (msg *TcActionMsg) Len() int {
+	return SizeofTcActionMsg
+}
+
+func DeserializeTcActionMsg(b []byte) *TcActionMsg {
+	return (*TcActionMsg)(unsafe.Pointer(&b[0:SizeofTcActionMsg][0]))
+}
+
+func (x *TcActionMsg) Serialize() []byte {
+	return (*(*[SizeofTcActionMsg]byte)(unsafe.Pointer(x)))[:]
+}
+
+const (
+	TC_PRIO_MAX = 15
+)
+
+// struct tc_prio_qopt {
+// 	int bands;      /* Number of bands */
+// 	__u8  priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> PRIO band */
+// };
+
+type TcPrioMap struct {
+	Bands   int32
+	Priomap [TC_PRIO_MAX + 1]uint8
+}
+
+func (msg *TcPrioMap) Len() int {
+	return SizeofTcPrioMap
+}
+
+func DeserializeTcPrioMap(b []byte) *TcPrioMap {
+	return (*TcPrioMap)(unsafe.Pointer(&b[0:SizeofTcPrioMap][0]))
+}
+
+func (x *TcPrioMap) Serialize() []byte {
+	return (*(*[SizeofTcPrioMap]byte)(unsafe.Pointer(x)))[:]
+}
+
+const (
+	TCA_TBF_UNSPEC = iota
+	TCA_TBF_PARMS
+	TCA_TBF_RTAB
+	TCA_TBF_PTAB
+	TCA_TBF_RATE64
+	TCA_TBF_PRATE64
+	TCA_TBF_BURST
+	TCA_TBF_PBURST
+	TCA_TBF_MAX = TCA_TBF_PBURST
+)
+
+// struct tc_ratespec {
+//   unsigned char cell_log;
+//   __u8    linklayer; /* lower 4 bits */
+//   unsigned short  overhead;
+//   short   cell_align;
+//   unsigned short  mpu;
+//   __u32   rate;
+// };
+
+type TcRateSpec struct {
+	CellLog   uint8
+	Linklayer uint8
+	Overhead  uint16
+	CellAlign int16
+	Mpu       uint16
+	Rate      uint32
+}
+
+func (msg *TcRateSpec) Len() int {
+	return SizeofTcRateSpec
+}
+
+func DeserializeTcRateSpec(b []byte) *TcRateSpec {
+	return (*TcRateSpec)(unsafe.Pointer(&b[0:SizeofTcRateSpec][0]))
+}
+
+func (x *TcRateSpec) Serialize() []byte {
+	return (*(*[SizeofTcRateSpec]byte)(unsafe.Pointer(x)))[:]
+}
+
+/**
+* NETEM
+ */
+
+const (
+	TCA_NETEM_UNSPEC = iota
+	TCA_NETEM_CORR
+	TCA_NETEM_DELAY_DIST
+	TCA_NETEM_REORDER
+	TCA_NETEM_CORRUPT
+	TCA_NETEM_LOSS
+	TCA_NETEM_RATE
+	TCA_NETEM_ECN
+	TCA_NETEM_RATE64
+	TCA_NETEM_MAX = TCA_NETEM_RATE64
+)
+
+// struct tc_netem_qopt {
+//	__u32	latency;	/* added delay (us) */
+//	__u32   limit;		/* fifo limit (packets) */
+//	__u32	loss;		/* random packet loss (0=none ~0=100%) */
+//	__u32	gap;		/* re-ordering gap (0 for none) */
+//	__u32   duplicate;	/* random packet dup  (0=none ~0=100%) */
+// 	__u32	jitter;		/* random jitter in latency (us) */
+// };
+
+type TcNetemQopt struct {
+	Latency   uint32
+	Limit     uint32
+	Loss      uint32
+	Gap       uint32
+	Duplicate uint32
+	Jitter    uint32
+}
+
+func (msg *TcNetemQopt) Len() int {
+	return SizeofTcNetemQopt
+}
+
+func DeserializeTcNetemQopt(b []byte) *TcNetemQopt {
+	return (*TcNetemQopt)(unsafe.Pointer(&b[0:SizeofTcNetemQopt][0]))
+}
+
+func (x *TcNetemQopt) Serialize() []byte {
+	return (*(*[SizeofTcNetemQopt]byte)(unsafe.Pointer(x)))[:]
+}
+
+// struct tc_netem_corr {
+//  __u32   delay_corr; /* delay correlation */
+//  __u32   loss_corr;  /* packet loss correlation */
+//  __u32   dup_corr;   /* duplicate correlation  */
+// };
+
+type TcNetemCorr struct {
+	DelayCorr uint32
+	LossCorr  uint32
+	DupCorr   uint32
+}
+
+func (msg *TcNetemCorr) Len() int {
+	return SizeofTcNetemCorr
+}
+
+func DeserializeTcNetemCorr(b []byte) *TcNetemCorr {
+	return (*TcNetemCorr)(unsafe.Pointer(&b[0:SizeofTcNetemCorr][0]))
+}
+
+func (x *TcNetemCorr) Serialize() []byte {
+	return (*(*[SizeofTcNetemCorr]byte)(unsafe.Pointer(x)))[:]
+}
+
+// struct tc_netem_reorder {
+//  __u32   probability;
+//  __u32   correlation;
+// };
+
+type TcNetemReorder struct {
+	Probability uint32
+	Correlation uint32
+}
+
+func (msg *TcNetemReorder) Len() int {
+	return SizeofTcNetemReorder
+}
+
+func DeserializeTcNetemReorder(b []byte) *TcNetemReorder {
+	return (*TcNetemReorder)(unsafe.Pointer(&b[0:SizeofTcNetemReorder][0]))
+}
+
+func (x *TcNetemReorder) Serialize() []byte {
+	return (*(*[SizeofTcNetemReorder]byte)(unsafe.Pointer(x)))[:]
+}
+
+// struct tc_netem_corrupt {
+//  __u32   probability;
+//  __u32   correlation;
+// };
+
+type TcNetemCorrupt struct {
+	Probability uint32
+	Correlation uint32
+}
+
+func (msg *TcNetemCorrupt) Len() int {
+	return SizeofTcNetemCorrupt
+}
+
+func DeserializeTcNetemCorrupt(b []byte) *TcNetemCorrupt {
+	return (*TcNetemCorrupt)(unsafe.Pointer(&b[0:SizeofTcNetemCorrupt][0]))
+}
+
+func (x *TcNetemCorrupt) Serialize() []byte {
+	return (*(*[SizeofTcNetemCorrupt]byte)(unsafe.Pointer(x)))[:]
+}
+
+// struct tc_tbf_qopt {
+//   struct tc_ratespec rate;
+//   struct tc_ratespec peakrate;
+//   __u32   limit;
+//   __u32   buffer;
+//   __u32   mtu;
+// };
+
+type TcTbfQopt struct {
+	Rate     TcRateSpec
+	Peakrate TcRateSpec
+	Limit    uint32
+	Buffer   uint32
+	Mtu      uint32
+}
+
+func (msg *TcTbfQopt) Len() int {
+	return SizeofTcTbfQopt
+}
+
+func DeserializeTcTbfQopt(b []byte) *TcTbfQopt {
+	return (*TcTbfQopt)(unsafe.Pointer(&b[0:SizeofTcTbfQopt][0]))
+}
+
+func (x *TcTbfQopt) Serialize() []byte {
+	return (*(*[SizeofTcTbfQopt]byte)(unsafe.Pointer(x)))[:]
+}
+
+const (
+	TCA_HTB_UNSPEC = iota
+	TCA_HTB_PARMS
+	TCA_HTB_INIT
+	TCA_HTB_CTAB
+	TCA_HTB_RTAB
+	TCA_HTB_DIRECT_QLEN
+	TCA_HTB_RATE64
+	TCA_HTB_CEIL64
+	TCA_HTB_MAX = TCA_HTB_CEIL64
+)
+
+//struct tc_htb_opt {
+//	struct tc_ratespec	rate;
+//	struct tc_ratespec	ceil;
+//	__u32	buffer;
+//	__u32	cbuffer;
+//	__u32	quantum;
+//	__u32	level;		/* out only */
+//	__u32	prio;
+//};
+
+type TcHtbCopt struct {
+	Rate    TcRateSpec
+	Ceil    TcRateSpec
+	Buffer  uint32
+	Cbuffer uint32
+	Quantum uint32
+	Level   uint32
+	Prio    uint32
+}
+
+func (msg *TcHtbCopt) Len() int {
+	return SizeofTcHtbCopt
+}
+
+func DeserializeTcHtbCopt(b []byte) *TcHtbCopt {
+	return (*TcHtbCopt)(unsafe.Pointer(&b[0:SizeofTcHtbCopt][0]))
+}
+
+func (x *TcHtbCopt) Serialize() []byte {
+	return (*(*[SizeofTcHtbCopt]byte)(unsafe.Pointer(x)))[:]
+}
+
+type TcHtbGlob struct {
+	Version      uint32
+	Rate2Quantum uint32
+	Defcls       uint32
+	Debug        uint32
+	DirectPkts   uint32
+}
+
+func (msg *TcHtbGlob) Len() int {
+	return SizeofTcHtbGlob
+}
+
+func DeserializeTcHtbGlob(b []byte) *TcHtbGlob {
+	return (*TcHtbGlob)(unsafe.Pointer(&b[0:SizeofTcHtbGlob][0]))
+}
+
+func (x *TcHtbGlob) Serialize() []byte {
+	return (*(*[SizeofTcHtbGlob]byte)(unsafe.Pointer(x)))[:]
+}
+
+const (
+	TCA_U32_UNSPEC = iota
+	TCA_U32_CLASSID
+	TCA_U32_HASH
+	TCA_U32_LINK
+	TCA_U32_DIVISOR
+	TCA_U32_SEL
+	TCA_U32_POLICE
+	TCA_U32_ACT
+	TCA_U32_INDEV
+	TCA_U32_PCNT
+	TCA_U32_MARK
+	TCA_U32_MAX = TCA_U32_MARK
+)
+
+// struct tc_u32_key {
+//   __be32    mask;
+//   __be32    val;
+//   int   off;
+//   int   offmask;
+// };
+
+type TcU32Key struct {
+	Mask    uint32 // big endian
+	Val     uint32 // big endian
+	Off     int32
+	OffMask int32
+}
+
+func (msg *TcU32Key) Len() int {
+	return SizeofTcU32Key
+}
+
+func DeserializeTcU32Key(b []byte) *TcU32Key {
+	return (*TcU32Key)(unsafe.Pointer(&b[0:SizeofTcU32Key][0]))
+}
+
+func (x *TcU32Key) Serialize() []byte {
+	return (*(*[SizeofTcU32Key]byte)(unsafe.Pointer(x)))[:]
+}
+
+// struct tc_u32_sel {
+//   unsigned char   flags;
+//   unsigned char   offshift;
+//   unsigned char   nkeys;
+//
+//   __be16      offmask;
+//   __u16     off;
+//   short     offoff;
+//
+//   short     hoff;
+//   __be32      hmask;
+//   struct tc_u32_key keys[0];
+// };
+
+const (
+	TC_U32_TERMINAL  = 1 << iota
+	TC_U32_OFFSET    = 1 << iota
+	TC_U32_VAROFFSET = 1 << iota
+	TC_U32_EAT       = 1 << iota
+)
+
+type TcU32Sel struct {
+	Flags    uint8
+	Offshift uint8
+	Nkeys    uint8
+	Pad      uint8
+	Offmask  uint16 // big endian
+	Off      uint16
+	Offoff   int16
+	Hoff     int16
+	Hmask    uint32 // big endian
+	Keys     []TcU32Key
+}
+
+func (msg *TcU32Sel) Len() int {
+	return SizeofTcU32Sel + int(msg.Nkeys)*SizeofTcU32Key
+}
+
+func DeserializeTcU32Sel(b []byte) *TcU32Sel {
+	x := &TcU32Sel{}
+	copy((*(*[SizeofTcU32Sel]byte)(unsafe.Pointer(x)))[:], b)
+	next := SizeofTcU32Sel
+	var i uint8
+	for i = 0; i < x.Nkeys; i++ {
+		x.Keys = append(x.Keys, *DeserializeTcU32Key(b[next:]))
+		next += SizeofTcU32Key
+	}
+	return x
+}
+
+func (x *TcU32Sel) Serialize() []byte {
+	// This can't just unsafe.cast because it must iterate through keys.
+	buf := make([]byte, x.Len())
+	copy(buf, (*(*[SizeofTcU32Sel]byte)(unsafe.Pointer(x)))[:])
+	next := SizeofTcU32Sel
+	for _, key := range x.Keys {
+		keyBuf := key.Serialize()
+		copy(buf[next:], keyBuf)
+		next += SizeofTcU32Key
+	}
+	return buf
+}
+
+const (
+	TCA_ACT_MIRRED = 8
+)
+
+const (
+	TCA_MIRRED_UNSPEC = iota
+	TCA_MIRRED_TM
+	TCA_MIRRED_PARMS
+	TCA_MIRRED_MAX = TCA_MIRRED_PARMS
+)
+
+const (
+	TCA_EGRESS_REDIR   = 1 /* packet redirect to EGRESS*/
+	TCA_EGRESS_MIRROR  = 2 /* mirror packet to EGRESS */
+	TCA_INGRESS_REDIR  = 3 /* packet redirect to INGRESS*/
+	TCA_INGRESS_MIRROR = 4 /* mirror packet to INGRESS */
+)
+
+const (
+	TC_ACT_UNSPEC     = int32(-1)
+	TC_ACT_OK         = 0
+	TC_ACT_RECLASSIFY = 1
+	TC_ACT_SHOT       = 2
+	TC_ACT_PIPE       = 3
+	TC_ACT_STOLEN     = 4
+	TC_ACT_QUEUED     = 5
+	TC_ACT_REPEAT     = 6
+	TC_ACT_REDIRECT   = 7
+	TC_ACT_JUMP       = 0x10000000
+)
+
+type TcGen struct {
+	Index   uint32
+	Capab   uint32
+	Action  int32
+	Refcnt  int32
+	Bindcnt int32
+}
+
+type TcActBpf struct {
+	TcGen
+}
+
+func (msg *TcActBpf) Len() int {
+	return SizeofTcActBpf
+}
+
+func DeserializeTcActBpf(b []byte) *TcActBpf {
+	return (*TcActBpf)(unsafe.Pointer(&b[0:SizeofTcActBpf][0]))
+}
+
+func (x *TcActBpf) Serialize() []byte {
+	return (*(*[SizeofTcActBpf]byte)(unsafe.Pointer(x)))[:]
+}
+
+// #define tc_gen \
+//   __u32                 index; \
+//   __u32                 capab; \
+//   int                   action; \
+//   int                   refcnt; \
+//   int                   bindcnt
+// struct tc_mirred {
+// 	tc_gen;
+// 	int                     eaction;   /* one of IN/EGRESS_MIRROR/REDIR */
+// 	__u32                   ifindex;  /* ifindex of egress port */
+// };
+
+type TcMirred struct {
+	TcGen
+	Eaction int32
+	Ifindex uint32
+}
+
+func (msg *TcMirred) Len() int {
+	return SizeofTcMirred
+}
+
+func DeserializeTcMirred(b []byte) *TcMirred {
+	return (*TcMirred)(unsafe.Pointer(&b[0:SizeofTcMirred][0]))
+}
+
+func (x *TcMirred) Serialize() []byte {
+	return (*(*[SizeofTcMirred]byte)(unsafe.Pointer(x)))[:]
+}
+
+const (
+	TC_POLICE_UNSPEC     = TC_ACT_UNSPEC
+	TC_POLICE_OK         = TC_ACT_OK
+	TC_POLICE_RECLASSIFY = TC_ACT_RECLASSIFY
+	TC_POLICE_SHOT       = TC_ACT_SHOT
+	TC_POLICE_PIPE       = TC_ACT_PIPE
+)
+
+// struct tc_police {
+// 	__u32			index;
+// 	int			action;
+// 	__u32			limit;
+// 	__u32			burst;
+// 	__u32			mtu;
+// 	struct tc_ratespec	rate;
+// 	struct tc_ratespec	peakrate;
+// 	int				refcnt;
+// 	int				bindcnt;
+// 	__u32			capab;
+// };
+
+type TcPolice struct {
+	Index    uint32
+	Action   int32
+	Limit    uint32
+	Burst    uint32
+	Mtu      uint32
+	Rate     TcRateSpec
+	PeakRate TcRateSpec
+	Refcnt   int32
+	Bindcnt  int32
+	Capab    uint32
+}
+
+func (msg *TcPolice) Len() int {
+	return SizeofTcPolice
+}
+
+func DeserializeTcPolice(b []byte) *TcPolice {
+	return (*TcPolice)(unsafe.Pointer(&b[0:SizeofTcPolice][0]))
+}
+
+func (x *TcPolice) Serialize() []byte {
+	return (*(*[SizeofTcPolice]byte)(unsafe.Pointer(x)))[:]
+}
+
+const (
+	TCA_FW_UNSPEC = iota
+	TCA_FW_CLASSID
+	TCA_FW_POLICE
+	TCA_FW_INDEV
+	TCA_FW_ACT
+	TCA_FW_MASK
+	TCA_FW_MAX = TCA_FW_MASK
+)
+
+const (
+	TCA_BPF_FLAG_ACT_DIRECT uint32 = 1 << iota
+)
+
+const (
+	TCA_BPF_UNSPEC = iota
+	TCA_BPF_ACT
+	TCA_BPF_POLICE
+	TCA_BPF_CLASSID
+	TCA_BPF_OPS_LEN
+	TCA_BPF_OPS
+	TCA_BPF_FD
+	TCA_BPF_NAME
+	TCA_BPF_FLAGS
+	TCA_BPF_MAX = TCA_BPF_FLAGS
+)
+
+const (
+	TCA_ACT_BPF_UNSPEC = iota
+	TCA_ACT_BPF_TM
+	TCA_ACT_BPF_PARMS
+	TCA_ACT_BPF_OPS_LEN
+	TCA_ACT_BPF_OPS
+	TCA_ACT_BPF_FD
+	TCA_ACT_BPF_NAME
+	TCA_ACT_BPF_MAX = TCA_ACT_BPF_NAME
+)

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

@@ -0,0 +1,258 @@
+package nl
+
+import (
+	"bytes"
+	"net"
+	"unsafe"
+)
+
+// Infinity for packet and byte counts
+const (
+	XFRM_INF = ^uint64(0)
+)
+
+// Message Types
+const (
+	XFRM_MSG_BASE        = 0x10
+	XFRM_MSG_NEWSA       = 0x10
+	XFRM_MSG_DELSA       = 0x11
+	XFRM_MSG_GETSA       = 0x12
+	XFRM_MSG_NEWPOLICY   = 0x13
+	XFRM_MSG_DELPOLICY   = 0x14
+	XFRM_MSG_GETPOLICY   = 0x15
+	XFRM_MSG_ALLOCSPI    = 0x16
+	XFRM_MSG_ACQUIRE     = 0x17
+	XFRM_MSG_EXPIRE      = 0x18
+	XFRM_MSG_UPDPOLICY   = 0x19
+	XFRM_MSG_UPDSA       = 0x1a
+	XFRM_MSG_POLEXPIRE   = 0x1b
+	XFRM_MSG_FLUSHSA     = 0x1c
+	XFRM_MSG_FLUSHPOLICY = 0x1d
+	XFRM_MSG_NEWAE       = 0x1e
+	XFRM_MSG_GETAE       = 0x1f
+	XFRM_MSG_REPORT      = 0x20
+	XFRM_MSG_MIGRATE     = 0x21
+	XFRM_MSG_NEWSADINFO  = 0x22
+	XFRM_MSG_GETSADINFO  = 0x23
+	XFRM_MSG_NEWSPDINFO  = 0x24
+	XFRM_MSG_GETSPDINFO  = 0x25
+	XFRM_MSG_MAPPING     = 0x26
+	XFRM_MSG_MAX         = 0x26
+	XFRM_NR_MSGTYPES     = 0x17
+)
+
+// Attribute types
+const (
+	/* Netlink message attributes.  */
+	XFRMA_UNSPEC         = 0x00
+	XFRMA_ALG_AUTH       = 0x01 /* struct xfrm_algo */
+	XFRMA_ALG_CRYPT      = 0x02 /* struct xfrm_algo */
+	XFRMA_ALG_COMP       = 0x03 /* struct xfrm_algo */
+	XFRMA_ENCAP          = 0x04 /* struct xfrm_algo + struct xfrm_encap_tmpl */
+	XFRMA_TMPL           = 0x05 /* 1 or more struct xfrm_user_tmpl */
+	XFRMA_SA             = 0x06 /* struct xfrm_usersa_info  */
+	XFRMA_POLICY         = 0x07 /* struct xfrm_userpolicy_info */
+	XFRMA_SEC_CTX        = 0x08 /* struct xfrm_sec_ctx */
+	XFRMA_LTIME_VAL      = 0x09
+	XFRMA_REPLAY_VAL     = 0x0a
+	XFRMA_REPLAY_THRESH  = 0x0b
+	XFRMA_ETIMER_THRESH  = 0x0c
+	XFRMA_SRCADDR        = 0x0d /* xfrm_address_t */
+	XFRMA_COADDR         = 0x0e /* xfrm_address_t */
+	XFRMA_LASTUSED       = 0x0f /* unsigned long  */
+	XFRMA_POLICY_TYPE    = 0x10 /* struct xfrm_userpolicy_type */
+	XFRMA_MIGRATE        = 0x11
+	XFRMA_ALG_AEAD       = 0x12 /* struct xfrm_algo_aead */
+	XFRMA_KMADDRESS      = 0x13 /* struct xfrm_user_kmaddress */
+	XFRMA_ALG_AUTH_TRUNC = 0x14 /* struct xfrm_algo_auth */
+	XFRMA_MARK           = 0x15 /* struct xfrm_mark */
+	XFRMA_TFCPAD         = 0x16 /* __u32 */
+	XFRMA_REPLAY_ESN_VAL = 0x17 /* struct xfrm_replay_esn */
+	XFRMA_SA_EXTRA_FLAGS = 0x18 /* __u32 */
+	XFRMA_MAX            = 0x18
+)
+
+const (
+	SizeofXfrmAddress     = 0x10
+	SizeofXfrmSelector    = 0x38
+	SizeofXfrmLifetimeCfg = 0x40
+	SizeofXfrmLifetimeCur = 0x20
+	SizeofXfrmId          = 0x18
+)
+
+// typedef union {
+//   __be32    a4;
+//   __be32    a6[4];
+// } xfrm_address_t;
+
+type XfrmAddress [SizeofXfrmAddress]byte
+
+func (x *XfrmAddress) ToIP() net.IP {
+	var empty = [12]byte{}
+	ip := make(net.IP, net.IPv6len)
+	if bytes.Equal(x[4:16], empty[:]) {
+		ip[10] = 0xff
+		ip[11] = 0xff
+		copy(ip[12:16], x[0:4])
+	} else {
+		copy(ip[:], x[:])
+	}
+	return ip
+}
+
+func (x *XfrmAddress) ToIPNet(prefixlen uint8) *net.IPNet {
+	ip := x.ToIP()
+	if GetIPFamily(ip) == FAMILY_V4 {
+		return &net.IPNet{IP: ip, Mask: net.CIDRMask(int(prefixlen), 32)}
+	}
+	return &net.IPNet{IP: ip, Mask: net.CIDRMask(int(prefixlen), 128)}
+}
+
+func (x *XfrmAddress) FromIP(ip net.IP) {
+	var empty = [16]byte{}
+	if len(ip) < net.IPv4len {
+		copy(x[4:16], empty[:])
+	} else if GetIPFamily(ip) == FAMILY_V4 {
+		copy(x[0:4], ip.To4()[0:4])
+		copy(x[4:16], empty[:12])
+	} else {
+		copy(x[0:16], ip.To16()[0:16])
+	}
+}
+
+func DeserializeXfrmAddress(b []byte) *XfrmAddress {
+	return (*XfrmAddress)(unsafe.Pointer(&b[0:SizeofXfrmAddress][0]))
+}
+
+func (x *XfrmAddress) Serialize() []byte {
+	return (*(*[SizeofXfrmAddress]byte)(unsafe.Pointer(x)))[:]
+}
+
+// struct xfrm_selector {
+//   xfrm_address_t  daddr;
+//   xfrm_address_t  saddr;
+//   __be16  dport;
+//   __be16  dport_mask;
+//   __be16  sport;
+//   __be16  sport_mask;
+//   __u16 family;
+//   __u8  prefixlen_d;
+//   __u8  prefixlen_s;
+//   __u8  proto;
+//   int ifindex;
+//   __kernel_uid32_t  user;
+// };
+
+type XfrmSelector struct {
+	Daddr      XfrmAddress
+	Saddr      XfrmAddress
+	Dport      uint16 // big endian
+	DportMask  uint16 // big endian
+	Sport      uint16 // big endian
+	SportMask  uint16 // big endian
+	Family     uint16
+	PrefixlenD uint8
+	PrefixlenS uint8
+	Proto      uint8
+	Pad        [3]byte
+	Ifindex    int32
+	User       uint32
+}
+
+func (msg *XfrmSelector) Len() int {
+	return SizeofXfrmSelector
+}
+
+func DeserializeXfrmSelector(b []byte) *XfrmSelector {
+	return (*XfrmSelector)(unsafe.Pointer(&b[0:SizeofXfrmSelector][0]))
+}
+
+func (msg *XfrmSelector) Serialize() []byte {
+	return (*(*[SizeofXfrmSelector]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct xfrm_lifetime_cfg {
+//   __u64 soft_byte_limit;
+//   __u64 hard_byte_limit;
+//   __u64 soft_packet_limit;
+//   __u64 hard_packet_limit;
+//   __u64 soft_add_expires_seconds;
+//   __u64 hard_add_expires_seconds;
+//   __u64 soft_use_expires_seconds;
+//   __u64 hard_use_expires_seconds;
+// };
+//
+
+type XfrmLifetimeCfg struct {
+	SoftByteLimit         uint64
+	HardByteLimit         uint64
+	SoftPacketLimit       uint64
+	HardPacketLimit       uint64
+	SoftAddExpiresSeconds uint64
+	HardAddExpiresSeconds uint64
+	SoftUseExpiresSeconds uint64
+	HardUseExpiresSeconds uint64
+}
+
+func (msg *XfrmLifetimeCfg) Len() int {
+	return SizeofXfrmLifetimeCfg
+}
+
+func DeserializeXfrmLifetimeCfg(b []byte) *XfrmLifetimeCfg {
+	return (*XfrmLifetimeCfg)(unsafe.Pointer(&b[0:SizeofXfrmLifetimeCfg][0]))
+}
+
+func (msg *XfrmLifetimeCfg) Serialize() []byte {
+	return (*(*[SizeofXfrmLifetimeCfg]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct xfrm_lifetime_cur {
+//   __u64 bytes;
+//   __u64 packets;
+//   __u64 add_time;
+//   __u64 use_time;
+// };
+
+type XfrmLifetimeCur struct {
+	Bytes   uint64
+	Packets uint64
+	AddTime uint64
+	UseTime uint64
+}
+
+func (msg *XfrmLifetimeCur) Len() int {
+	return SizeofXfrmLifetimeCur
+}
+
+func DeserializeXfrmLifetimeCur(b []byte) *XfrmLifetimeCur {
+	return (*XfrmLifetimeCur)(unsafe.Pointer(&b[0:SizeofXfrmLifetimeCur][0]))
+}
+
+func (msg *XfrmLifetimeCur) Serialize() []byte {
+	return (*(*[SizeofXfrmLifetimeCur]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct xfrm_id {
+//   xfrm_address_t  daddr;
+//   __be32    spi;
+//   __u8    proto;
+// };
+
+type XfrmId struct {
+	Daddr XfrmAddress
+	Spi   uint32 // big endian
+	Proto uint8
+	Pad   [3]byte
+}
+
+func (msg *XfrmId) Len() int {
+	return SizeofXfrmId
+}
+
+func DeserializeXfrmId(b []byte) *XfrmId {
+	return (*XfrmId)(unsafe.Pointer(&b[0:SizeofXfrmId][0]))
+}
+
+func (msg *XfrmId) Serialize() []byte {
+	return (*(*[SizeofXfrmId]byte)(unsafe.Pointer(msg)))[:]
+}

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

@@ -0,0 +1,119 @@
+package nl
+
+import (
+	"unsafe"
+)
+
+const (
+	SizeofXfrmUserpolicyId   = 0x40
+	SizeofXfrmUserpolicyInfo = 0xa8
+	SizeofXfrmUserTmpl       = 0x40
+)
+
+// struct xfrm_userpolicy_id {
+//   struct xfrm_selector    sel;
+//   __u32       index;
+//   __u8        dir;
+// };
+//
+
+type XfrmUserpolicyId struct {
+	Sel   XfrmSelector
+	Index uint32
+	Dir   uint8
+	Pad   [3]byte
+}
+
+func (msg *XfrmUserpolicyId) Len() int {
+	return SizeofXfrmUserpolicyId
+}
+
+func DeserializeXfrmUserpolicyId(b []byte) *XfrmUserpolicyId {
+	return (*XfrmUserpolicyId)(unsafe.Pointer(&b[0:SizeofXfrmUserpolicyId][0]))
+}
+
+func (msg *XfrmUserpolicyId) Serialize() []byte {
+	return (*(*[SizeofXfrmUserpolicyId]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct xfrm_userpolicy_info {
+//   struct xfrm_selector    sel;
+//   struct xfrm_lifetime_cfg  lft;
+//   struct xfrm_lifetime_cur  curlft;
+//   __u32       priority;
+//   __u32       index;
+//   __u8        dir;
+//   __u8        action;
+// #define XFRM_POLICY_ALLOW 0
+// #define XFRM_POLICY_BLOCK 1
+//   __u8        flags;
+// #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */
+//   /* Automatically expand selector to include matching ICMP payloads. */
+// #define XFRM_POLICY_ICMP  2
+//   __u8        share;
+// };
+
+type XfrmUserpolicyInfo struct {
+	Sel      XfrmSelector
+	Lft      XfrmLifetimeCfg
+	Curlft   XfrmLifetimeCur
+	Priority uint32
+	Index    uint32
+	Dir      uint8
+	Action   uint8
+	Flags    uint8
+	Share    uint8
+	Pad      [4]byte
+}
+
+func (msg *XfrmUserpolicyInfo) Len() int {
+	return SizeofXfrmUserpolicyInfo
+}
+
+func DeserializeXfrmUserpolicyInfo(b []byte) *XfrmUserpolicyInfo {
+	return (*XfrmUserpolicyInfo)(unsafe.Pointer(&b[0:SizeofXfrmUserpolicyInfo][0]))
+}
+
+func (msg *XfrmUserpolicyInfo) Serialize() []byte {
+	return (*(*[SizeofXfrmUserpolicyInfo]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct xfrm_user_tmpl {
+//   struct xfrm_id    id;
+//   __u16     family;
+//   xfrm_address_t    saddr;
+//   __u32     reqid;
+//   __u8      mode;
+//   __u8      share;
+//   __u8      optional;
+//   __u32     aalgos;
+//   __u32     ealgos;
+//   __u32     calgos;
+// }
+
+type XfrmUserTmpl struct {
+	XfrmId   XfrmId
+	Family   uint16
+	Pad1     [2]byte
+	Saddr    XfrmAddress
+	Reqid    uint32
+	Mode     uint8
+	Share    uint8
+	Optional uint8
+	Pad2     byte
+	Aalgos   uint32
+	Ealgos   uint32
+	Calgos   uint32
+}
+
+func (msg *XfrmUserTmpl) Len() int {
+	return SizeofXfrmUserTmpl
+}
+
+func DeserializeXfrmUserTmpl(b []byte) *XfrmUserTmpl {
+	return (*XfrmUserTmpl)(unsafe.Pointer(&b[0:SizeofXfrmUserTmpl][0]))
+}
+
+func (msg *XfrmUserTmpl) Serialize() []byte {
+	return (*(*[SizeofXfrmUserTmpl]byte)(unsafe.Pointer(msg)))[:]
+}

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

@@ -0,0 +1,221 @@
+package nl
+
+import (
+	"unsafe"
+)
+
+const (
+	SizeofXfrmUsersaId   = 0x18
+	SizeofXfrmStats      = 0x0c
+	SizeofXfrmUsersaInfo = 0xe0
+	SizeofXfrmAlgo       = 0x44
+	SizeofXfrmAlgoAuth   = 0x48
+	SizeofXfrmEncapTmpl  = 0x18
+)
+
+// struct xfrm_usersa_id {
+//   xfrm_address_t      daddr;
+//   __be32        spi;
+//   __u16       family;
+//   __u8        proto;
+// };
+
+type XfrmUsersaId struct {
+	Daddr  XfrmAddress
+	Spi    uint32 // big endian
+	Family uint16
+	Proto  uint8
+	Pad    byte
+}
+
+func (msg *XfrmUsersaId) Len() int {
+	return SizeofXfrmUsersaId
+}
+
+func DeserializeXfrmUsersaId(b []byte) *XfrmUsersaId {
+	return (*XfrmUsersaId)(unsafe.Pointer(&b[0:SizeofXfrmUsersaId][0]))
+}
+
+func (msg *XfrmUsersaId) Serialize() []byte {
+	return (*(*[SizeofXfrmUsersaId]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct xfrm_stats {
+//   __u32 replay_window;
+//   __u32 replay;
+//   __u32 integrity_failed;
+// };
+
+type XfrmStats struct {
+	ReplayWindow    uint32
+	Replay          uint32
+	IntegrityFailed uint32
+}
+
+func (msg *XfrmStats) Len() int {
+	return SizeofXfrmStats
+}
+
+func DeserializeXfrmStats(b []byte) *XfrmStats {
+	return (*XfrmStats)(unsafe.Pointer(&b[0:SizeofXfrmStats][0]))
+}
+
+func (msg *XfrmStats) Serialize() []byte {
+	return (*(*[SizeofXfrmStats]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct xfrm_usersa_info {
+//   struct xfrm_selector    sel;
+//   struct xfrm_id      id;
+//   xfrm_address_t      saddr;
+//   struct xfrm_lifetime_cfg  lft;
+//   struct xfrm_lifetime_cur  curlft;
+//   struct xfrm_stats   stats;
+//   __u32       seq;
+//   __u32       reqid;
+//   __u16       family;
+//   __u8        mode;   /* XFRM_MODE_xxx */
+//   __u8        replay_window;
+//   __u8        flags;
+// #define XFRM_STATE_NOECN  1
+// #define XFRM_STATE_DECAP_DSCP 2
+// #define XFRM_STATE_NOPMTUDISC 4
+// #define XFRM_STATE_WILDRECV 8
+// #define XFRM_STATE_ICMP   16
+// #define XFRM_STATE_AF_UNSPEC  32
+// #define XFRM_STATE_ALIGN4 64
+// #define XFRM_STATE_ESN    128
+// };
+//
+// #define XFRM_SA_XFLAG_DONT_ENCAP_DSCP 1
+//
+
+type XfrmUsersaInfo struct {
+	Sel          XfrmSelector
+	Id           XfrmId
+	Saddr        XfrmAddress
+	Lft          XfrmLifetimeCfg
+	Curlft       XfrmLifetimeCur
+	Stats        XfrmStats
+	Seq          uint32
+	Reqid        uint32
+	Family       uint16
+	Mode         uint8
+	ReplayWindow uint8
+	Flags        uint8
+	Pad          [7]byte
+}
+
+func (msg *XfrmUsersaInfo) Len() int {
+	return SizeofXfrmUsersaInfo
+}
+
+func DeserializeXfrmUsersaInfo(b []byte) *XfrmUsersaInfo {
+	return (*XfrmUsersaInfo)(unsafe.Pointer(&b[0:SizeofXfrmUsersaInfo][0]))
+}
+
+func (msg *XfrmUsersaInfo) Serialize() []byte {
+	return (*(*[SizeofXfrmUsersaInfo]byte)(unsafe.Pointer(msg)))[:]
+}
+
+// struct xfrm_algo {
+//   char    alg_name[64];
+//   unsigned int  alg_key_len;    /* in bits */
+//   char    alg_key[0];
+// };
+
+type XfrmAlgo struct {
+	AlgName   [64]byte
+	AlgKeyLen uint32
+	AlgKey    []byte
+}
+
+func (msg *XfrmAlgo) Len() int {
+	return SizeofXfrmAlgo + int(msg.AlgKeyLen/8)
+}
+
+func DeserializeXfrmAlgo(b []byte) *XfrmAlgo {
+	ret := XfrmAlgo{}
+	copy(ret.AlgName[:], b[0:64])
+	ret.AlgKeyLen = *(*uint32)(unsafe.Pointer(&b[64]))
+	ret.AlgKey = b[68:ret.Len()]
+	return &ret
+}
+
+func (msg *XfrmAlgo) Serialize() []byte {
+	b := make([]byte, msg.Len())
+	copy(b[0:64], msg.AlgName[:])
+	copy(b[64:68], (*(*[4]byte)(unsafe.Pointer(&msg.AlgKeyLen)))[:])
+	copy(b[68:msg.Len()], msg.AlgKey[:])
+	return b
+}
+
+// struct xfrm_algo_auth {
+//   char    alg_name[64];
+//   unsigned int  alg_key_len;    /* in bits */
+//   unsigned int  alg_trunc_len;  /* in bits */
+//   char    alg_key[0];
+// };
+
+type XfrmAlgoAuth struct {
+	AlgName     [64]byte
+	AlgKeyLen   uint32
+	AlgTruncLen uint32
+	AlgKey      []byte
+}
+
+func (msg *XfrmAlgoAuth) Len() int {
+	return SizeofXfrmAlgoAuth + int(msg.AlgKeyLen/8)
+}
+
+func DeserializeXfrmAlgoAuth(b []byte) *XfrmAlgoAuth {
+	ret := XfrmAlgoAuth{}
+	copy(ret.AlgName[:], b[0:64])
+	ret.AlgKeyLen = *(*uint32)(unsafe.Pointer(&b[64]))
+	ret.AlgTruncLen = *(*uint32)(unsafe.Pointer(&b[68]))
+	ret.AlgKey = b[72:ret.Len()]
+	return &ret
+}
+
+func (msg *XfrmAlgoAuth) Serialize() []byte {
+	b := make([]byte, msg.Len())
+	copy(b[0:64], msg.AlgName[:])
+	copy(b[64:68], (*(*[4]byte)(unsafe.Pointer(&msg.AlgKeyLen)))[:])
+	copy(b[68:72], (*(*[4]byte)(unsafe.Pointer(&msg.AlgTruncLen)))[:])
+	copy(b[72:msg.Len()], msg.AlgKey[:])
+	return b
+}
+
+// struct xfrm_algo_aead {
+//   char    alg_name[64];
+//   unsigned int  alg_key_len;  /* in bits */
+//   unsigned int  alg_icv_len;  /* in bits */
+//   char    alg_key[0];
+// }
+
+// struct xfrm_encap_tmpl {
+//   __u16   encap_type;
+//   __be16    encap_sport;
+//   __be16    encap_dport;
+//   xfrm_address_t  encap_oa;
+// };
+
+type XfrmEncapTmpl struct {
+	EncapType  uint16
+	EncapSport uint16 // big endian
+	EncapDport uint16 // big endian
+	Pad        [2]byte
+	EncapOa    XfrmAddress
+}
+
+func (msg *XfrmEncapTmpl) Len() int {
+	return SizeofXfrmEncapTmpl
+}
+
+func DeserializeXfrmEncapTmpl(b []byte) *XfrmEncapTmpl {
+	return (*XfrmEncapTmpl)(unsafe.Pointer(&b[0:SizeofXfrmEncapTmpl][0]))
+}
+
+func (msg *XfrmEncapTmpl) Serialize() []byte {
+	return (*(*[SizeofXfrmEncapTmpl]byte)(unsafe.Pointer(msg)))[:]
+}

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

@@ -0,0 +1,53 @@
+package netlink
+
+import (
+	"strings"
+)
+
+// Protinfo represents bridge flags from netlink.
+type Protinfo struct {
+	Hairpin   bool
+	Guard     bool
+	FastLeave bool
+	RootBlock bool
+	Learning  bool
+	Flood     bool
+}
+
+// String returns a list of enabled flags
+func (prot *Protinfo) String() string {
+	var boolStrings []string
+	if prot.Hairpin {
+		boolStrings = append(boolStrings, "Hairpin")
+	}
+	if prot.Guard {
+		boolStrings = append(boolStrings, "Guard")
+	}
+	if prot.FastLeave {
+		boolStrings = append(boolStrings, "FastLeave")
+	}
+	if prot.RootBlock {
+		boolStrings = append(boolStrings, "RootBlock")
+	}
+	if prot.Learning {
+		boolStrings = append(boolStrings, "Learning")
+	}
+	if prot.Flood {
+		boolStrings = append(boolStrings, "Flood")
+	}
+	return strings.Join(boolStrings, " ")
+}
+
+func boolToByte(x bool) []byte {
+	if x {
+		return []byte{1}
+	}
+	return []byte{0}
+}
+
+func byteToBool(x byte) bool {
+	if uint8(x) != 0 {
+		return true
+	}
+	return false
+}

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

@@ -0,0 +1,60 @@
+package netlink
+
+import (
+	"fmt"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+func LinkGetProtinfo(link Link) (Protinfo, error) {
+	base := link.Attrs()
+	ensureIndex(base)
+	var pi Protinfo
+	req := nl.NewNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_DUMP)
+	msg := nl.NewIfInfomsg(syscall.AF_BRIDGE)
+	req.AddData(msg)
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	if err != nil {
+		return pi, err
+	}
+
+	for _, m := range msgs {
+		ans := nl.DeserializeIfInfomsg(m)
+		if int(ans.Index) != base.Index {
+			continue
+		}
+		attrs, err := nl.ParseRouteAttr(m[ans.Len():])
+		if err != nil {
+			return pi, err
+		}
+		for _, attr := range attrs {
+			if attr.Attr.Type != syscall.IFLA_PROTINFO|syscall.NLA_F_NESTED {
+				continue
+			}
+			infos, err := nl.ParseRouteAttr(attr.Value)
+			if err != nil {
+				return pi, err
+			}
+			var pi Protinfo
+			for _, info := range infos {
+				switch info.Attr.Type {
+				case nl.IFLA_BRPORT_MODE:
+					pi.Hairpin = byteToBool(info.Value[0])
+				case nl.IFLA_BRPORT_GUARD:
+					pi.Guard = byteToBool(info.Value[0])
+				case nl.IFLA_BRPORT_FAST_LEAVE:
+					pi.FastLeave = byteToBool(info.Value[0])
+				case nl.IFLA_BRPORT_PROTECT:
+					pi.RootBlock = byteToBool(info.Value[0])
+				case nl.IFLA_BRPORT_LEARNING:
+					pi.Learning = byteToBool(info.Value[0])
+				case nl.IFLA_BRPORT_UNICAST_FLOOD:
+					pi.Flood = byteToBool(info.Value[0])
+				}
+			}
+			return pi, nil
+		}
+	}
+	return pi, fmt.Errorf("Device with index %d not found", base.Index)
+}

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

@@ -0,0 +1,295 @@
+package netlink
+
+import (
+	"fmt"
+	"math"
+)
+
+const (
+	HANDLE_NONE      = 0
+	HANDLE_INGRESS   = 0xFFFFFFF1
+	HANDLE_CLSACT    = HANDLE_INGRESS
+	HANDLE_ROOT      = 0xFFFFFFFF
+	PRIORITY_MAP_LEN = 16
+)
+const (
+	HANDLE_MIN_INGRESS = 0xFFFFFFF2
+	HANDLE_MIN_EGRESS  = 0xFFFFFFF3
+)
+
+type Qdisc interface {
+	Attrs() *QdiscAttrs
+	Type() string
+}
+
+// QdiscAttrs represents a netlink qdisc. A qdisc is associated with a link,
+// has a handle, a parent and a refcnt. The root qdisc of a device should
+// have parent == HANDLE_ROOT.
+type QdiscAttrs struct {
+	LinkIndex int
+	Handle    uint32
+	Parent    uint32
+	Refcnt    uint32 // read only
+}
+
+func (q QdiscAttrs) String() string {
+	return fmt.Sprintf("{LinkIndex: %d, Handle: %s, Parent: %s, Refcnt: %d}", q.LinkIndex, HandleStr(q.Handle), HandleStr(q.Parent), q.Refcnt)
+}
+
+func MakeHandle(major, minor uint16) uint32 {
+	return (uint32(major) << 16) | uint32(minor)
+}
+
+func MajorMinor(handle uint32) (uint16, uint16) {
+	return uint16((handle & 0xFFFF0000) >> 16), uint16(handle & 0x0000FFFFF)
+}
+
+func HandleStr(handle uint32) string {
+	switch handle {
+	case HANDLE_NONE:
+		return "none"
+	case HANDLE_INGRESS:
+		return "ingress"
+	case HANDLE_ROOT:
+		return "root"
+	default:
+		major, minor := MajorMinor(handle)
+		return fmt.Sprintf("%x:%x", major, minor)
+	}
+}
+
+func Percentage2u32(percentage float32) uint32 {
+	// FIXME this is most likely not the best way to convert from % to uint32
+	if percentage == 100 {
+		return math.MaxUint32
+	}
+	return uint32(math.MaxUint32 * (percentage / 100))
+}
+
+// PfifoFast is the default qdisc created by the kernel if one has not
+// been defined for the interface
+type PfifoFast struct {
+	QdiscAttrs
+	Bands       uint8
+	PriorityMap [PRIORITY_MAP_LEN]uint8
+}
+
+func (qdisc *PfifoFast) Attrs() *QdiscAttrs {
+	return &qdisc.QdiscAttrs
+}
+
+func (qdisc *PfifoFast) Type() string {
+	return "pfifo_fast"
+}
+
+// Prio is a basic qdisc that works just like PfifoFast
+type Prio struct {
+	QdiscAttrs
+	Bands       uint8
+	PriorityMap [PRIORITY_MAP_LEN]uint8
+}
+
+func NewPrio(attrs QdiscAttrs) *Prio {
+	return &Prio{
+		QdiscAttrs:  attrs,
+		Bands:       3,
+		PriorityMap: [PRIORITY_MAP_LEN]uint8{1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1},
+	}
+}
+
+func (qdisc *Prio) Attrs() *QdiscAttrs {
+	return &qdisc.QdiscAttrs
+}
+
+func (qdisc *Prio) Type() string {
+	return "prio"
+}
+
+// Htb is a classful qdisc that rate limits based on tokens
+type Htb struct {
+	QdiscAttrs
+	Version      uint32
+	Rate2Quantum uint32
+	Defcls       uint32
+	Debug        uint32
+	DirectPkts   uint32
+}
+
+func NewHtb(attrs QdiscAttrs) *Htb {
+	return &Htb{
+		QdiscAttrs:   attrs,
+		Version:      3,
+		Defcls:       0,
+		Rate2Quantum: 10,
+		Debug:        0,
+		DirectPkts:   0,
+	}
+}
+
+func (qdisc *Htb) Attrs() *QdiscAttrs {
+	return &qdisc.QdiscAttrs
+}
+
+func (qdisc *Htb) Type() string {
+	return "htb"
+}
+
+// Netem is a classless qdisc that rate limits based on tokens
+
+type NetemQdiscAttrs struct {
+	Latency       uint32  // in us
+	DelayCorr     float32 // in %
+	Limit         uint32
+	Loss          float32 // in %
+	LossCorr      float32 // in %
+	Gap           uint32
+	Duplicate     float32 // in %
+	DuplicateCorr float32 // in %
+	Jitter        uint32  // in us
+	ReorderProb   float32 // in %
+	ReorderCorr   float32 // in %
+	CorruptProb   float32 // in %
+	CorruptCorr   float32 // in %
+}
+
+func (q NetemQdiscAttrs) String() string {
+	return fmt.Sprintf(
+		"{Latency: %d, Limit: %d, Loss: %f, Gap: %d, Duplicate: %f, Jitter: %d}",
+		q.Latency, q.Limit, q.Loss, q.Gap, q.Duplicate, q.Jitter,
+	)
+}
+
+type Netem struct {
+	QdiscAttrs
+	Latency       uint32
+	DelayCorr     uint32
+	Limit         uint32
+	Loss          uint32
+	LossCorr      uint32
+	Gap           uint32
+	Duplicate     uint32
+	DuplicateCorr uint32
+	Jitter        uint32
+	ReorderProb   uint32
+	ReorderCorr   uint32
+	CorruptProb   uint32
+	CorruptCorr   uint32
+}
+
+func NewNetem(attrs QdiscAttrs, nattrs NetemQdiscAttrs) *Netem {
+	var limit uint32 = 1000
+	var lossCorr, delayCorr, duplicateCorr uint32
+	var reorderProb, reorderCorr uint32
+	var corruptProb, corruptCorr uint32
+
+	latency := nattrs.Latency
+	loss := Percentage2u32(nattrs.Loss)
+	gap := nattrs.Gap
+	duplicate := Percentage2u32(nattrs.Duplicate)
+	jitter := nattrs.Jitter
+
+	// Correlation
+	if latency > 0 && jitter > 0 {
+		delayCorr = Percentage2u32(nattrs.DelayCorr)
+	}
+	if loss > 0 {
+		lossCorr = Percentage2u32(nattrs.LossCorr)
+	}
+	if duplicate > 0 {
+		duplicateCorr = Percentage2u32(nattrs.DuplicateCorr)
+	}
+	// FIXME should validate values(like loss/duplicate are percentages...)
+	latency = time2Tick(latency)
+
+	if nattrs.Limit != 0 {
+		limit = nattrs.Limit
+	}
+	// Jitter is only value if latency is > 0
+	if latency > 0 {
+		jitter = time2Tick(jitter)
+	}
+
+	reorderProb = Percentage2u32(nattrs.ReorderProb)
+	reorderCorr = Percentage2u32(nattrs.ReorderCorr)
+
+	if reorderProb > 0 {
+		// ERROR if lantency == 0
+		if gap == 0 {
+			gap = 1
+		}
+	}
+
+	corruptProb = Percentage2u32(nattrs.CorruptProb)
+	corruptCorr = Percentage2u32(nattrs.CorruptCorr)
+
+	return &Netem{
+		QdiscAttrs:    attrs,
+		Latency:       latency,
+		DelayCorr:     delayCorr,
+		Limit:         limit,
+		Loss:          loss,
+		LossCorr:      lossCorr,
+		Gap:           gap,
+		Duplicate:     duplicate,
+		DuplicateCorr: duplicateCorr,
+		Jitter:        jitter,
+		ReorderProb:   reorderProb,
+		ReorderCorr:   reorderCorr,
+		CorruptProb:   corruptProb,
+		CorruptCorr:   corruptCorr,
+	}
+}
+
+func (qdisc *Netem) Attrs() *QdiscAttrs {
+	return &qdisc.QdiscAttrs
+}
+
+func (qdisc *Netem) Type() string {
+	return "netem"
+}
+
+// Tbf is a classless qdisc that rate limits based on tokens
+type Tbf struct {
+	QdiscAttrs
+	// TODO: handle 64bit rate properly
+	Rate   uint64
+	Limit  uint32
+	Buffer uint32
+	// TODO: handle other settings
+}
+
+func (qdisc *Tbf) Attrs() *QdiscAttrs {
+	return &qdisc.QdiscAttrs
+}
+
+func (qdisc *Tbf) Type() string {
+	return "tbf"
+}
+
+// Ingress is a qdisc for adding ingress filters
+type Ingress struct {
+	QdiscAttrs
+}
+
+func (qdisc *Ingress) Attrs() *QdiscAttrs {
+	return &qdisc.QdiscAttrs
+}
+
+func (qdisc *Ingress) Type() string {
+	return "ingress"
+}
+
+// GenericQdisc qdiscs represent types that are not currently understood
+// by this netlink library.
+type GenericQdisc struct {
+	QdiscAttrs
+	QdiscType string
+}
+
+func (qdisc *GenericQdisc) Attrs() *QdiscAttrs {
+	return &qdisc.QdiscAttrs
+}
+
+func (qdisc *GenericQdisc) Type() string {
+	return qdisc.QdiscType
+}

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

@@ -0,0 +1,415 @@
+package netlink
+
+import (
+	"fmt"
+	"io/ioutil"
+	"strconv"
+	"strings"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// QdiscDel will delete a qdisc from the system.
+// Equivalent to: `tc qdisc del $qdisc`
+func QdiscDel(qdisc Qdisc) error {
+	return qdiscModify(syscall.RTM_DELQDISC, 0, qdisc)
+}
+
+// QdiscChange will change a qdisc in place
+// Equivalent to: `tc qdisc change $qdisc`
+// The parent and handle MUST NOT be changed.
+func QdiscChange(qdisc Qdisc) error {
+	return qdiscModify(syscall.RTM_NEWQDISC, 0, qdisc)
+}
+
+// QdiscReplace will replace a qdisc to the system.
+// Equivalent to: `tc qdisc replace $qdisc`
+// The handle MUST change.
+func QdiscReplace(qdisc Qdisc) error {
+	return qdiscModify(
+		syscall.RTM_NEWQDISC,
+		syscall.NLM_F_CREATE|syscall.NLM_F_REPLACE,
+		qdisc)
+}
+
+// QdiscAdd will add a qdisc to the system.
+// Equivalent to: `tc qdisc add $qdisc`
+func QdiscAdd(qdisc Qdisc) error {
+	return qdiscModify(
+		syscall.RTM_NEWQDISC,
+		syscall.NLM_F_CREATE|syscall.NLM_F_EXCL,
+		qdisc)
+}
+
+func qdiscModify(cmd, flags int, qdisc Qdisc) error {
+	req := nl.NewNetlinkRequest(cmd, flags|syscall.NLM_F_ACK)
+	base := qdisc.Attrs()
+	msg := &nl.TcMsg{
+		Family:  nl.FAMILY_ALL,
+		Ifindex: int32(base.LinkIndex),
+		Handle:  base.Handle,
+		Parent:  base.Parent,
+	}
+	req.AddData(msg)
+
+	// When deleting don't bother building the rest of the netlink payload
+	if cmd != syscall.RTM_DELQDISC {
+		if err := qdiscPayload(req, qdisc); err != nil {
+			return err
+		}
+	}
+
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	return err
+}
+
+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 {
+		tcmap := nl.TcPrioMap{
+			Bands:   int32(prio.Bands),
+			Priomap: prio.PriorityMap,
+		}
+		options = nl.NewRtAttr(nl.TCA_OPTIONS, tcmap.Serialize())
+	} else if tbf, ok := qdisc.(*Tbf); ok {
+		opt := nl.TcTbfQopt{}
+		// TODO: handle rate > uint32
+		opt.Rate.Rate = uint32(tbf.Rate)
+		opt.Limit = tbf.Limit
+		opt.Buffer = tbf.Buffer
+		nl.NewRtAttrChild(options, nl.TCA_TBF_PARMS, opt.Serialize())
+	} else if htb, ok := qdisc.(*Htb); ok {
+		opt := nl.TcHtbGlob{}
+		opt.Version = htb.Version
+		opt.Rate2Quantum = htb.Rate2Quantum
+		opt.Defcls = htb.Defcls
+		// TODO: Handle Debug properly. For now default to 0
+		opt.Debug = htb.Debug
+		opt.DirectPkts = htb.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 {
+		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
+		options = nl.NewRtAttr(nl.TCA_OPTIONS, opt.Serialize())
+		// Correlation
+		corr := nl.TcNetemCorr{}
+		corr.DelayCorr = netem.DelayCorr
+		corr.LossCorr = netem.LossCorr
+		corr.DupCorr = netem.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
+		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
+		if reorder.Probability > 0 {
+			nl.NewRtAttrChild(options, nl.TCA_NETEM_REORDER, reorder.Serialize())
+		}
+	} else if _, ok := qdisc.(*Ingress); ok {
+		// ingress filters must use the proper handle
+		if qdisc.Attrs().Parent != HANDLE_INGRESS {
+			return fmt.Errorf("Ingress filters must set Parent to HANDLE_INGRESS")
+		}
+	}
+
+	req.AddData(options)
+	return nil
+}
+
+// QdiscList gets a list of qdiscs in the system.
+// Equivalent to: `tc qdisc show`.
+// The list can be filtered by link.
+func QdiscList(link Link) ([]Qdisc, error) {
+	req := nl.NewNetlinkRequest(syscall.RTM_GETQDISC, syscall.NLM_F_DUMP)
+	index := int32(0)
+	if link != nil {
+		base := link.Attrs()
+		ensureIndex(base)
+		index = int32(base.Index)
+	}
+	msg := &nl.TcMsg{
+		Family:  nl.FAMILY_ALL,
+		Ifindex: index,
+	}
+	req.AddData(msg)
+
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWQDISC)
+	if err != nil {
+		return nil, err
+	}
+
+	var res []Qdisc
+	for _, m := range msgs {
+		msg := nl.DeserializeTcMsg(m)
+
+		attrs, err := nl.ParseRouteAttr(m[msg.Len():])
+		if err != nil {
+			return nil, err
+		}
+
+		// skip qdiscs from other interfaces
+		if link != nil && msg.Ifindex != index {
+			continue
+		}
+
+		base := QdiscAttrs{
+			LinkIndex: int(msg.Ifindex),
+			Handle:    msg.Handle,
+			Parent:    msg.Parent,
+			Refcnt:    msg.Info,
+		}
+		var qdisc Qdisc
+		qdiscType := ""
+		for _, attr := range attrs {
+			switch attr.Attr.Type {
+			case nl.TCA_KIND:
+				qdiscType = string(attr.Value[:len(attr.Value)-1])
+				switch qdiscType {
+				case "pfifo_fast":
+					qdisc = &PfifoFast{}
+				case "prio":
+					qdisc = &Prio{}
+				case "tbf":
+					qdisc = &Tbf{}
+				case "ingress":
+					qdisc = &Ingress{}
+				case "htb":
+					qdisc = &Htb{}
+				case "netem":
+					qdisc = &Netem{}
+				default:
+					qdisc = &GenericQdisc{QdiscType: qdiscType}
+				}
+			case nl.TCA_OPTIONS:
+				switch qdiscType {
+				case "pfifo_fast":
+					// pfifo returns TcPrioMap directly without wrapping it in rtattr
+					if err := parsePfifoFastData(qdisc, attr.Value); err != nil {
+						return nil, err
+					}
+				case "prio":
+					// prio returns TcPrioMap directly without wrapping it in rtattr
+					if err := parsePrioData(qdisc, attr.Value); err != nil {
+						return nil, err
+					}
+				case "tbf":
+					data, err := nl.ParseRouteAttr(attr.Value)
+					if err != nil {
+						return nil, err
+					}
+					if err := parseTbfData(qdisc, data); err != nil {
+						return nil, err
+					}
+				case "htb":
+					data, err := nl.ParseRouteAttr(attr.Value)
+					if err != nil {
+						return nil, err
+					}
+					if err := parseHtbData(qdisc, data); err != nil {
+						return nil, err
+					}
+				case "netem":
+					if err := parseNetemData(qdisc, attr.Value); err != nil {
+						return nil, err
+					}
+
+					// no options for ingress
+				}
+			}
+		}
+		*qdisc.Attrs() = base
+		res = append(res, qdisc)
+	}
+
+	return res, nil
+}
+
+func parsePfifoFastData(qdisc Qdisc, value []byte) error {
+	pfifo := qdisc.(*PfifoFast)
+	tcmap := nl.DeserializeTcPrioMap(value)
+	pfifo.PriorityMap = tcmap.Priomap
+	pfifo.Bands = uint8(tcmap.Bands)
+	return nil
+}
+
+func parsePrioData(qdisc Qdisc, value []byte) error {
+	prio := qdisc.(*Prio)
+	tcmap := nl.DeserializeTcPrioMap(value)
+	prio.PriorityMap = tcmap.Priomap
+	prio.Bands = uint8(tcmap.Bands)
+	return nil
+}
+
+func parseHtbData(qdisc Qdisc, data []syscall.NetlinkRouteAttr) error {
+	native = nl.NativeEndian()
+	htb := qdisc.(*Htb)
+	for _, datum := range data {
+		switch datum.Attr.Type {
+		case nl.TCA_HTB_INIT:
+			opt := nl.DeserializeTcHtbGlob(datum.Value)
+			htb.Version = opt.Version
+			htb.Rate2Quantum = opt.Rate2Quantum
+			htb.Defcls = opt.Defcls
+			htb.Debug = opt.Debug
+			htb.DirectPkts = opt.DirectPkts
+		case nl.TCA_HTB_DIRECT_QLEN:
+			// TODO
+			//htb.DirectQlen = native.uint32(datum.Value)
+		}
+	}
+	return nil
+}
+
+func parseNetemData(qdisc Qdisc, value []byte) error {
+	netem := qdisc.(*Netem)
+	opt := nl.DeserializeTcNetemQopt(value)
+	netem.Latency = opt.Latency
+	netem.Limit = opt.Limit
+	netem.Loss = opt.Loss
+	netem.Gap = opt.Gap
+	netem.Duplicate = opt.Duplicate
+	netem.Jitter = opt.Jitter
+	data, err := nl.ParseRouteAttr(value[nl.SizeofTcNetemQopt:])
+	if err != nil {
+		return err
+	}
+	for _, datum := range data {
+		switch datum.Attr.Type {
+		case nl.TCA_NETEM_CORR:
+			opt := nl.DeserializeTcNetemCorr(datum.Value)
+			netem.DelayCorr = opt.DelayCorr
+			netem.LossCorr = opt.LossCorr
+			netem.DuplicateCorr = opt.DupCorr
+		case nl.TCA_NETEM_CORRUPT:
+			opt := nl.DeserializeTcNetemCorrupt(datum.Value)
+			netem.CorruptProb = opt.Probability
+			netem.CorruptCorr = opt.Correlation
+		case nl.TCA_NETEM_REORDER:
+			opt := nl.DeserializeTcNetemReorder(datum.Value)
+			netem.ReorderProb = opt.Probability
+			netem.ReorderCorr = opt.Correlation
+		}
+	}
+	return nil
+}
+
+func parseTbfData(qdisc Qdisc, data []syscall.NetlinkRouteAttr) error {
+	native = nl.NativeEndian()
+	tbf := qdisc.(*Tbf)
+	for _, datum := range data {
+		switch datum.Attr.Type {
+		case nl.TCA_TBF_PARMS:
+			opt := nl.DeserializeTcTbfQopt(datum.Value)
+			tbf.Rate = uint64(opt.Rate.Rate)
+			tbf.Limit = opt.Limit
+			tbf.Buffer = opt.Buffer
+		case nl.TCA_TBF_RATE64:
+			tbf.Rate = native.Uint64(datum.Value[0:4])
+		}
+	}
+	return nil
+}
+
+const (
+	TIME_UNITS_PER_SEC = 1000000
+)
+
+var (
+	tickInUsec  float64
+	clockFactor float64
+	hz          float64
+)
+
+func initClock() {
+	data, err := ioutil.ReadFile("/proc/net/psched")
+	if err != nil {
+		return
+	}
+	parts := strings.Split(strings.TrimSpace(string(data)), " ")
+	if len(parts) < 3 {
+		return
+	}
+	var vals [3]uint64
+	for i := range vals {
+		val, err := strconv.ParseUint(parts[i], 16, 32)
+		if err != nil {
+			return
+		}
+		vals[i] = val
+	}
+	// compatibility
+	if vals[2] == 1000000000 {
+		vals[0] = vals[1]
+	}
+	clockFactor = float64(vals[2]) / TIME_UNITS_PER_SEC
+	tickInUsec = float64(vals[0]) / float64(vals[1]) * clockFactor
+	hz = float64(vals[0])
+}
+
+func TickInUsec() float64 {
+	if tickInUsec == 0.0 {
+		initClock()
+	}
+	return tickInUsec
+}
+
+func ClockFactor() float64 {
+	if clockFactor == 0.0 {
+		initClock()
+	}
+	return clockFactor
+}
+
+func Hz() float64 {
+	if hz == 0.0 {
+		initClock()
+	}
+	return hz
+}
+
+func time2Tick(time uint32) uint32 {
+	return uint32(float64(time) * TickInUsec())
+}
+
+func tick2Time(tick uint32) uint32 {
+	return uint32(float64(tick) / TickInUsec())
+}
+
+func time2Ktime(time uint32) uint32 {
+	return uint32(float64(time) * ClockFactor())
+}
+
+func ktime2Time(ktime uint32) uint32 {
+	return uint32(float64(ktime) / ClockFactor())
+}
+
+func burst(rate uint64, buffer uint32) uint32 {
+	return uint32(float64(rate) * float64(tick2Time(buffer)) / TIME_UNITS_PER_SEC)
+}
+
+func latency(rate uint64, limit, buffer uint32) float64 {
+	return TIME_UNITS_PER_SEC*(float64(limit)/float64(rate)) - float64(tick2Time(buffer))
+}
+
+func Xmittime(rate uint64, size uint32) float64 {
+	return TickInUsec() * TIME_UNITS_PER_SEC * (float64(size) / float64(rate))
+}

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

@@ -0,0 +1,80 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+	"syscall"
+)
+
+// Scope is an enum representing a route scope.
+type Scope uint8
+
+const (
+	SCOPE_UNIVERSE Scope = syscall.RT_SCOPE_UNIVERSE
+	SCOPE_SITE     Scope = syscall.RT_SCOPE_SITE
+	SCOPE_LINK     Scope = syscall.RT_SCOPE_LINK
+	SCOPE_HOST     Scope = syscall.RT_SCOPE_HOST
+	SCOPE_NOWHERE  Scope = syscall.RT_SCOPE_NOWHERE
+)
+
+type NextHopFlag int
+
+const (
+	FLAG_ONLINK    NextHopFlag = syscall.RTNH_F_ONLINK
+	FLAG_PERVASIVE NextHopFlag = syscall.RTNH_F_PERVASIVE
+)
+
+// Route represents a netlink route.
+type Route struct {
+	LinkIndex  int
+	ILinkIndex int
+	Scope      Scope
+	Dst        *net.IPNet
+	Src        net.IP
+	Gw         net.IP
+	Protocol   int
+	Priority   int
+	Table      int
+	Type       int
+	Tos        int
+	Flags      int
+}
+
+func (r Route) String() string {
+	return fmt.Sprintf("{Ifindex: %d Dst: %s Src: %s Gw: %s Flags: %s}", r.LinkIndex, r.Dst,
+		r.Src, r.Gw, r.ListFlags())
+}
+
+func (r *Route) SetFlag(flag NextHopFlag) {
+	r.Flags |= int(flag)
+}
+
+func (r *Route) ClearFlag(flag NextHopFlag) {
+	r.Flags &^= int(flag)
+}
+
+type flagString struct {
+	f NextHopFlag
+	s string
+}
+
+var testFlags = []flagString{
+	{f: FLAG_ONLINK, s: "onlink"},
+	{f: FLAG_PERVASIVE, s: "pervasive"},
+}
+
+func (r *Route) ListFlags() []string {
+	var flags []string
+	for _, tf := range testFlags {
+		if r.Flags&int(tf.f) != 0 {
+			flags = append(flags, tf.s)
+		}
+	}
+	return flags
+}
+
+// RouteUpdate is sent when a route changes - type is RTM_NEWROUTE or RTM_DELROUTE
+type RouteUpdate struct {
+	Type uint16
+	Route
+}

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

@@ -0,0 +1,328 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// RtAttr is shared so it is in netlink_linux.go
+
+const (
+	RT_FILTER_PROTOCOL uint64 = 1 << (1 + iota)
+	RT_FILTER_SCOPE
+	RT_FILTER_TYPE
+	RT_FILTER_TOS
+	RT_FILTER_IIF
+	RT_FILTER_OIF
+	RT_FILTER_DST
+	RT_FILTER_SRC
+	RT_FILTER_GW
+	RT_FILTER_TABLE
+)
+
+// RouteAdd will add a route to the system.
+// Equivalent to: `ip route add $route`
+func RouteAdd(route *Route) error {
+	req := nl.NewNetlinkRequest(syscall.RTM_NEWROUTE, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK)
+	return routeHandle(route, req, nl.NewRtMsg())
+}
+
+// RouteDel will delete a route from the system.
+// Equivalent to: `ip route del $route`
+func RouteDel(route *Route) error {
+	req := nl.NewNetlinkRequest(syscall.RTM_DELROUTE, syscall.NLM_F_ACK)
+	return routeHandle(route, req, nl.NewRtDelMsg())
+}
+
+func routeHandle(route *Route, req *nl.NetlinkRequest, msg *nl.RtMsg) error {
+	if (route.Dst == nil || route.Dst.IP == nil) && route.Src == nil && route.Gw == nil {
+		return fmt.Errorf("one of Dst.IP, Src, or Gw must not be nil")
+	}
+
+	family := -1
+	var rtAttrs []*nl.RtAttr
+
+	if route.Dst != nil && route.Dst.IP != nil {
+		dstLen, _ := route.Dst.Mask.Size()
+		msg.Dst_len = uint8(dstLen)
+		dstFamily := nl.GetIPFamily(route.Dst.IP)
+		family = dstFamily
+		var dstData []byte
+		if dstFamily == FAMILY_V4 {
+			dstData = route.Dst.IP.To4()
+		} else {
+			dstData = route.Dst.IP.To16()
+		}
+		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_DST, dstData))
+	}
+
+	if route.Src != nil {
+		srcFamily := nl.GetIPFamily(route.Src)
+		if family != -1 && family != srcFamily {
+			return fmt.Errorf("source and destination ip are not the same IP family")
+		}
+		family = srcFamily
+		var srcData []byte
+		if srcFamily == FAMILY_V4 {
+			srcData = route.Src.To4()
+		} else {
+			srcData = route.Src.To16()
+		}
+		// The commonly used src ip for routes is actually PREFSRC
+		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_PREFSRC, srcData))
+	}
+
+	if route.Gw != nil {
+		gwFamily := nl.GetIPFamily(route.Gw)
+		if family != -1 && family != gwFamily {
+			return fmt.Errorf("gateway, source, and destination ip are not the same IP family")
+		}
+		family = gwFamily
+		var gwData []byte
+		if gwFamily == FAMILY_V4 {
+			gwData = route.Gw.To4()
+		} else {
+			gwData = route.Gw.To16()
+		}
+		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_GATEWAY, gwData))
+	}
+
+	if route.Table > 0 {
+		if route.Table >= 256 {
+			msg.Table = syscall.RT_TABLE_UNSPEC
+			b := make([]byte, 4)
+			native.PutUint32(b, uint32(route.Table))
+			rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_TABLE, b))
+		} else {
+			msg.Table = uint8(route.Table)
+		}
+	}
+
+	if route.Priority > 0 {
+		b := make([]byte, 4)
+		native.PutUint32(b, uint32(route.Priority))
+		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_PRIORITY, b))
+	}
+	if route.Tos > 0 {
+		msg.Tos = uint8(route.Tos)
+	}
+	if route.Protocol > 0 {
+		msg.Protocol = uint8(route.Protocol)
+	}
+	if route.Type > 0 {
+		msg.Type = uint8(route.Type)
+	}
+
+	msg.Flags = uint32(route.Flags)
+	msg.Scope = uint8(route.Scope)
+	msg.Family = uint8(family)
+	req.AddData(msg)
+	for _, attr := range rtAttrs {
+		req.AddData(attr)
+	}
+
+	var (
+		b      = make([]byte, 4)
+		native = nl.NativeEndian()
+	)
+	native.PutUint32(b, uint32(route.LinkIndex))
+
+	req.AddData(nl.NewRtAttr(syscall.RTA_OIF, b))
+
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	return err
+}
+
+// RouteList gets a list of routes in the system.
+// Equivalent to: `ip route show`.
+// The list can be filtered by link and ip family.
+func RouteList(link Link, family int) ([]Route, error) {
+	var routeFilter *Route
+	if link != nil {
+		routeFilter = &Route{
+			LinkIndex: link.Attrs().Index,
+		}
+	}
+	return RouteListFiltered(family, routeFilter, RT_FILTER_OIF)
+}
+
+// RouteListFiltered gets a list of routes in the system filtered with specified rules.
+// All rules must be defined in RouteFilter struct
+func RouteListFiltered(family int, filter *Route, filterMask uint64) ([]Route, error) {
+	req := nl.NewNetlinkRequest(syscall.RTM_GETROUTE, syscall.NLM_F_DUMP)
+	infmsg := nl.NewIfInfomsg(family)
+	req.AddData(infmsg)
+
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWROUTE)
+	if err != nil {
+		return nil, err
+	}
+
+	var res []Route
+	for _, m := range msgs {
+		msg := nl.DeserializeRtMsg(m)
+		if msg.Flags&syscall.RTM_F_CLONED != 0 {
+			// Ignore cloned routes
+			continue
+		}
+		if msg.Table != syscall.RT_TABLE_MAIN {
+			if filter == nil || filter != nil && filterMask&RT_FILTER_TABLE == 0 {
+				// Ignore non-main tables
+				continue
+			}
+		}
+		route, err := deserializeRoute(m)
+		if err != nil {
+			return nil, err
+		}
+		if filter != nil {
+			switch {
+			case filterMask&RT_FILTER_TABLE != 0 && route.Table != filter.Table:
+				continue
+			case filterMask&RT_FILTER_PROTOCOL != 0 && route.Protocol != filter.Protocol:
+				continue
+			case filterMask&RT_FILTER_SCOPE != 0 && route.Scope != filter.Scope:
+				continue
+			case filterMask&RT_FILTER_TYPE != 0 && route.Type != filter.Type:
+				continue
+			case filterMask&RT_FILTER_TOS != 0 && route.Tos != filter.Tos:
+				continue
+			case filterMask&RT_FILTER_OIF != 0 && route.LinkIndex != filter.LinkIndex:
+				continue
+			case filterMask&RT_FILTER_IIF != 0 && route.ILinkIndex != filter.ILinkIndex:
+				continue
+			case filterMask&RT_FILTER_GW != 0 && !route.Gw.Equal(filter.Gw):
+				continue
+			case filterMask&RT_FILTER_SRC != 0 && !route.Src.Equal(filter.Src):
+				continue
+			case filterMask&RT_FILTER_DST != 0 && filter.Dst != nil:
+				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
+				}
+			}
+		}
+		res = append(res, route)
+	}
+	return res, nil
+}
+
+// deserializeRoute decodes a binary netlink message into a Route struct
+func deserializeRoute(m []byte) (Route, error) {
+	msg := nl.DeserializeRtMsg(m)
+	attrs, err := nl.ParseRouteAttr(m[msg.Len():])
+	if err != nil {
+		return Route{}, err
+	}
+	route := Route{
+		Scope:    Scope(msg.Scope),
+		Protocol: int(msg.Protocol),
+		Table:    int(msg.Table),
+		Type:     int(msg.Type),
+		Tos:      int(msg.Tos),
+		Flags:    int(msg.Flags),
+	}
+
+	native := nl.NativeEndian()
+	for _, attr := range attrs {
+		switch attr.Attr.Type {
+		case syscall.RTA_GATEWAY:
+			route.Gw = net.IP(attr.Value)
+		case syscall.RTA_PREFSRC:
+			route.Src = net.IP(attr.Value)
+		case syscall.RTA_DST:
+			route.Dst = &net.IPNet{
+				IP:   attr.Value,
+				Mask: net.CIDRMask(int(msg.Dst_len), 8*len(attr.Value)),
+			}
+		case syscall.RTA_OIF:
+			route.LinkIndex = int(native.Uint32(attr.Value[0:4]))
+		case syscall.RTA_IIF:
+			route.ILinkIndex = int(native.Uint32(attr.Value[0:4]))
+		case syscall.RTA_PRIORITY:
+			route.Priority = int(native.Uint32(attr.Value[0:4]))
+		case syscall.RTA_TABLE:
+			route.Table = int(native.Uint32(attr.Value[0:4]))
+		}
+	}
+	return route, nil
+}
+
+// RouteGet gets a route to a specific destination from the host system.
+// Equivalent to: 'ip route get'.
+func RouteGet(destination net.IP) ([]Route, error) {
+	req := nl.NewNetlinkRequest(syscall.RTM_GETROUTE, syscall.NLM_F_REQUEST)
+	family := nl.GetIPFamily(destination)
+	var destinationData []byte
+	var bitlen uint8
+	if family == FAMILY_V4 {
+		destinationData = destination.To4()
+		bitlen = 32
+	} else {
+		destinationData = destination.To16()
+		bitlen = 128
+	}
+	msg := &nl.RtMsg{}
+	msg.Family = uint8(family)
+	msg.Dst_len = bitlen
+	req.AddData(msg)
+
+	rtaDst := nl.NewRtAttr(syscall.RTA_DST, destinationData)
+	req.AddData(rtaDst)
+
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWROUTE)
+	if err != nil {
+		return nil, err
+	}
+
+	var res []Route
+	for _, m := range msgs {
+		route, err := deserializeRoute(m)
+		if err != nil {
+			return nil, err
+		}
+		res = append(res, route)
+	}
+	return res, nil
+
+}
+
+// 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 {
+	s, err := nl.Subscribe(syscall.NETLINK_ROUTE, syscall.RTNLGRP_IPV4_ROUTE, syscall.RTNLGRP_IPV6_ROUTE)
+	if err != nil {
+		return err
+	}
+	if done != nil {
+		go func() {
+			<-done
+			s.Close()
+		}()
+	}
+	go func() {
+		defer close(ch)
+		for {
+			msgs, err := s.Receive()
+			if err != nil {
+				return
+			}
+			for _, m := range msgs {
+				route, err := deserializeRoute(m.Data)
+				if err != nil {
+					return
+				}
+				ch <- RouteUpdate{Type: m.Header.Type, Route: route}
+			}
+		}
+	}()
+
+	return nil
+}

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

@@ -0,0 +1,43 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// Rule represents a netlink rule.
+type Rule struct {
+	*nl.RtMsg
+	Priority          int
+	Table             int
+	Mark              int
+	Mask              int
+	TunID             uint
+	Goto              int
+	Src               *net.IPNet
+	Dst               *net.IPNet
+	Flow              int
+	IifName           string
+	OifName           string
+	SuppressIfgroup   int
+	SuppressPrefixlen int
+}
+
+func (r Rule) String() string {
+	return fmt.Sprintf("ip rule %d: from %s table %d", r.Priority, r.Src, r.Table)
+}
+
+// NewRule return empty rules.
+func NewRule() *Rule {
+	return &Rule{
+		SuppressIfgroup:   -1,
+		SuppressPrefixlen: -1,
+		Priority:          -1,
+		Mark:              -1,
+		Mask:              -1,
+		Goto:              -1,
+		Flow:              -1,
+	}
+}

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

@@ -0,0 +1,198 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// RuleAdd adds a rule to the system.
+// Equivalent to: ip rule add
+func RuleAdd(rule *Rule) error {
+	req := nl.NewNetlinkRequest(syscall.RTM_NEWRULE, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK)
+	return ruleHandle(rule, req)
+}
+
+// RuleDel deletes a rule from the system.
+// Equivalent to: ip rule del
+func RuleDel(rule *Rule) error {
+	req := nl.NewNetlinkRequest(syscall.RTM_DELRULE, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK)
+	return ruleHandle(rule, req)
+}
+
+func ruleHandle(rule *Rule, req *nl.NetlinkRequest) error {
+	msg := nl.NewRtMsg()
+	msg.Family = syscall.AF_INET
+	var dstFamily uint8
+
+	var rtAttrs []*nl.RtAttr
+	if rule.Dst != nil && rule.Dst.IP != nil {
+		dstLen, _ := rule.Dst.Mask.Size()
+		msg.Dst_len = uint8(dstLen)
+		msg.Family = uint8(nl.GetIPFamily(rule.Dst.IP))
+		dstFamily = msg.Family
+		var dstData []byte
+		if msg.Family == syscall.AF_INET {
+			dstData = rule.Dst.IP.To4()
+		} else {
+			dstData = rule.Dst.IP.To16()
+		}
+		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_DST, dstData))
+	}
+
+	if rule.Src != nil && rule.Src.IP != nil {
+		msg.Family = uint8(nl.GetIPFamily(rule.Src.IP))
+		if dstFamily != 0 && dstFamily != msg.Family {
+			return fmt.Errorf("source and destination ip are not the same IP family")
+		}
+		srcLen, _ := rule.Src.Mask.Size()
+		msg.Src_len = uint8(srcLen)
+		var srcData []byte
+		if msg.Family == syscall.AF_INET {
+			srcData = rule.Src.IP.To4()
+		} else {
+			srcData = rule.Src.IP.To16()
+		}
+		rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_SRC, srcData))
+	}
+
+	if rule.Table >= 0 {
+		msg.Table = uint8(rule.Table)
+		if rule.Table >= 256 {
+			msg.Table = syscall.RT_TABLE_UNSPEC
+		}
+	}
+
+	req.AddData(msg)
+	for i := range rtAttrs {
+		req.AddData(rtAttrs[i])
+	}
+
+	var (
+		b      = make([]byte, 4)
+		native = nl.NativeEndian()
+	)
+
+	if rule.Priority >= 0 {
+		native.PutUint32(b, uint32(rule.Priority))
+		req.AddData(nl.NewRtAttr(nl.FRA_PRIORITY, b))
+	}
+	if rule.Mark >= 0 {
+		native.PutUint32(b, uint32(rule.Mark))
+		req.AddData(nl.NewRtAttr(nl.FRA_FWMARK, b))
+	}
+	if rule.Mask >= 0 {
+		native.PutUint32(b, uint32(rule.Mask))
+		req.AddData(nl.NewRtAttr(nl.FRA_FWMASK, b))
+	}
+	if rule.Flow >= 0 {
+		native.PutUint32(b, uint32(rule.Flow))
+		req.AddData(nl.NewRtAttr(nl.FRA_FLOW, b))
+	}
+	if rule.TunID > 0 {
+		native.PutUint32(b, uint32(rule.TunID))
+		req.AddData(nl.NewRtAttr(nl.FRA_TUN_ID, b))
+	}
+	if rule.Table >= 256 {
+		native.PutUint32(b, uint32(rule.Table))
+		req.AddData(nl.NewRtAttr(nl.FRA_TABLE, b))
+	}
+	if msg.Table > 0 {
+		if rule.SuppressPrefixlen >= 0 {
+			native.PutUint32(b, uint32(rule.SuppressPrefixlen))
+			req.AddData(nl.NewRtAttr(nl.FRA_SUPPRESS_PREFIXLEN, b))
+		}
+		if rule.SuppressIfgroup >= 0 {
+			native.PutUint32(b, uint32(rule.SuppressIfgroup))
+			req.AddData(nl.NewRtAttr(nl.FRA_SUPPRESS_IFGROUP, b))
+		}
+	}
+	if rule.IifName != "" {
+		req.AddData(nl.NewRtAttr(nl.FRA_IIFNAME, []byte(rule.IifName)))
+	}
+	if rule.OifName != "" {
+		req.AddData(nl.NewRtAttr(nl.FRA_OIFNAME, []byte(rule.OifName)))
+	}
+	if rule.Goto >= 0 {
+		msg.Type = nl.FR_ACT_NOP
+		native.PutUint32(b, uint32(rule.Goto))
+		req.AddData(nl.NewRtAttr(nl.FRA_GOTO, b))
+	}
+
+	_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
+	return err
+}
+
+// RuleList lists rules in the system.
+// Equivalent to: ip rule list
+func RuleList(family int) ([]Rule, error) {
+	req := nl.NewNetlinkRequest(syscall.RTM_GETRULE, syscall.NLM_F_DUMP|syscall.NLM_F_REQUEST)
+	msg := nl.NewIfInfomsg(family)
+	req.AddData(msg)
+
+	msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWRULE)
+	if err != nil {
+		return nil, err
+	}
+
+	native := nl.NativeEndian()
+	var res = make([]Rule, 0)
+	for i := range msgs {
+		msg := nl.DeserializeRtMsg(msgs[i])
+		attrs, err := nl.ParseRouteAttr(msgs[i][msg.Len():])
+		if err != nil {
+			return nil, err
+		}
+
+		rule := NewRule()
+		rule.RtMsg = msg
+
+		for j := range attrs {
+			switch attrs[j].Attr.Type {
+			case syscall.RTA_TABLE:
+				rule.Table = int(native.Uint32(attrs[j].Value[0:4]))
+			case nl.FRA_SRC:
+				rule.Src = &net.IPNet{
+					IP:   attrs[j].Value,
+					Mask: net.CIDRMask(int(msg.Src_len), 8*len(attrs[j].Value)),
+				}
+			case nl.FRA_DST:
+				rule.Dst = &net.IPNet{
+					IP:   attrs[j].Value,
+					Mask: net.CIDRMask(int(msg.Dst_len), 8*len(attrs[j].Value)),
+				}
+			case nl.FRA_FWMARK:
+				rule.Mark = int(native.Uint32(attrs[j].Value[0:4]))
+			case nl.FRA_FWMASK:
+				rule.Mask = int(native.Uint32(attrs[j].Value[0:4]))
+			case nl.FRA_TUN_ID:
+				rule.TunID = uint(native.Uint64(attrs[j].Value[0:4]))
+			case nl.FRA_IIFNAME:
+				rule.IifName = string(attrs[j].Value[:len(attrs[j].Value)-1])
+			case nl.FRA_OIFNAME:
+				rule.OifName = string(attrs[j].Value[:len(attrs[j].Value)-1])
+			case nl.FRA_SUPPRESS_PREFIXLEN:
+				i := native.Uint32(attrs[j].Value[0:4])
+				if i != 0xffffffff {
+					rule.SuppressPrefixlen = int(i)
+				}
+			case nl.FRA_SUPPRESS_IFGROUP:
+				i := native.Uint32(attrs[j].Value[0:4])
+				if i != 0xffffffff {
+					rule.SuppressIfgroup = int(i)
+				}
+			case nl.FRA_FLOW:
+				rule.Flow = int(native.Uint32(attrs[j].Value[0:4]))
+			case nl.FRA_GOTO:
+				rule.Goto = int(native.Uint32(attrs[j].Value[0:4]))
+			case nl.FRA_PRIORITY:
+				rule.Priority = int(native.Uint32(attrs[j].Value[0:4]))
+			}
+		}
+		res = append(res, *rule)
+	}
+
+	return res, nil
+}

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

@@ -0,0 +1,64 @@
+package netlink
+
+import (
+	"fmt"
+	"syscall"
+)
+
+// Proto is an enum representing an ipsec protocol.
+type Proto uint8
+
+const (
+	XFRM_PROTO_ROUTE2    Proto = syscall.IPPROTO_ROUTING
+	XFRM_PROTO_ESP       Proto = syscall.IPPROTO_ESP
+	XFRM_PROTO_AH        Proto = syscall.IPPROTO_AH
+	XFRM_PROTO_HAO       Proto = syscall.IPPROTO_DSTOPTS
+	XFRM_PROTO_COMP      Proto = syscall.IPPROTO_COMP
+	XFRM_PROTO_IPSEC_ANY Proto = syscall.IPPROTO_RAW
+)
+
+func (p Proto) String() string {
+	switch p {
+	case XFRM_PROTO_ROUTE2:
+		return "route2"
+	case XFRM_PROTO_ESP:
+		return "esp"
+	case XFRM_PROTO_AH:
+		return "ah"
+	case XFRM_PROTO_HAO:
+		return "hao"
+	case XFRM_PROTO_COMP:
+		return "comp"
+	case XFRM_PROTO_IPSEC_ANY:
+		return "ipsec-any"
+	}
+	return fmt.Sprintf("%d", p)
+}
+
+// Mode is an enum representing an ipsec transport.
+type Mode uint8
+
+const (
+	XFRM_MODE_TRANSPORT Mode = iota
+	XFRM_MODE_TUNNEL
+	XFRM_MODE_ROUTEOPTIMIZATION
+	XFRM_MODE_IN_TRIGGER
+	XFRM_MODE_BEET
+	XFRM_MODE_MAX
+)
+
+func (m Mode) String() string {
+	switch m {
+	case XFRM_MODE_TRANSPORT:
+		return "transport"
+	case XFRM_MODE_TUNNEL:
+		return "tunnel"
+	case XFRM_MODE_ROUTEOPTIMIZATION:
+		return "ro"
+	case XFRM_MODE_IN_TRIGGER:
+		return "in_trigger"
+	case XFRM_MODE_BEET:
+		return "beet"
+	}
+	return fmt.Sprintf("%d", m)
+}

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

@@ -0,0 +1,59 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+)
+
+// Dir is an enum representing an ipsec template direction.
+type Dir uint8
+
+const (
+	XFRM_DIR_IN Dir = iota
+	XFRM_DIR_OUT
+	XFRM_DIR_FWD
+	XFRM_SOCKET_IN
+	XFRM_SOCKET_OUT
+	XFRM_SOCKET_FWD
+)
+
+func (d Dir) String() string {
+	switch d {
+	case XFRM_DIR_IN:
+		return "dir in"
+	case XFRM_DIR_OUT:
+		return "dir out"
+	case XFRM_DIR_FWD:
+		return "dir fwd"
+	case XFRM_SOCKET_IN:
+		return "socket in"
+	case XFRM_SOCKET_OUT:
+		return "socket out"
+	case XFRM_SOCKET_FWD:
+		return "socket fwd"
+	}
+	return fmt.Sprintf("socket %d", d-XFRM_SOCKET_IN)
+}
+
+// XfrmPolicyTmpl encapsulates a rule for the base addresses of an ipsec
+// policy. These rules are matched with XfrmState to determine encryption
+// and authentication algorithms.
+type XfrmPolicyTmpl struct {
+	Dst   net.IP
+	Src   net.IP
+	Proto Proto
+	Mode  Mode
+	Reqid int
+}
+
+// XfrmPolicy represents an ipsec policy. It represents the overlay network
+// and has a list of XfrmPolicyTmpls representing the base addresses of
+// the policy.
+type XfrmPolicy struct {
+	Dst      *net.IPNet
+	Src      *net.IPNet
+	Dir      Dir
+	Priority int
+	Index    int
+	Tmpls    []XfrmPolicyTmpl
+}

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

@@ -0,0 +1,127 @@
+package netlink
+
+import (
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+func selFromPolicy(sel *nl.XfrmSelector, policy *XfrmPolicy) {
+	sel.Family = uint16(nl.GetIPFamily(policy.Dst.IP))
+	sel.Daddr.FromIP(policy.Dst.IP)
+	sel.Saddr.FromIP(policy.Src.IP)
+	prefixlenD, _ := policy.Dst.Mask.Size()
+	sel.PrefixlenD = uint8(prefixlenD)
+	prefixlenS, _ := policy.Src.Mask.Size()
+	sel.PrefixlenS = uint8(prefixlenS)
+}
+
+// XfrmPolicyAdd will add an xfrm policy to the system.
+// Equivalent to: `ip xfrm policy add $policy`
+func XfrmPolicyAdd(policy *XfrmPolicy) error {
+	req := nl.NewNetlinkRequest(nl.XFRM_MSG_NEWPOLICY, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK)
+
+	msg := &nl.XfrmUserpolicyInfo{}
+	selFromPolicy(&msg.Sel, policy)
+	msg.Priority = uint32(policy.Priority)
+	msg.Index = uint32(policy.Index)
+	msg.Dir = uint8(policy.Dir)
+	msg.Lft.SoftByteLimit = nl.XFRM_INF
+	msg.Lft.HardByteLimit = nl.XFRM_INF
+	msg.Lft.SoftPacketLimit = nl.XFRM_INF
+	msg.Lft.HardPacketLimit = nl.XFRM_INF
+	req.AddData(msg)
+
+	tmplData := make([]byte, nl.SizeofXfrmUserTmpl*len(policy.Tmpls))
+	for i, tmpl := range policy.Tmpls {
+		start := i * nl.SizeofXfrmUserTmpl
+		userTmpl := nl.DeserializeXfrmUserTmpl(tmplData[start : start+nl.SizeofXfrmUserTmpl])
+		userTmpl.XfrmId.Daddr.FromIP(tmpl.Dst)
+		userTmpl.Saddr.FromIP(tmpl.Src)
+		userTmpl.XfrmId.Proto = uint8(tmpl.Proto)
+		userTmpl.Mode = uint8(tmpl.Mode)
+		userTmpl.Reqid = uint32(tmpl.Reqid)
+		userTmpl.Aalgos = ^uint32(0)
+		userTmpl.Ealgos = ^uint32(0)
+		userTmpl.Calgos = ^uint32(0)
+	}
+	if len(tmplData) > 0 {
+		tmpls := nl.NewRtAttr(nl.XFRMA_TMPL, tmplData)
+		req.AddData(tmpls)
+	}
+
+	_, err := req.Execute(syscall.NETLINK_XFRM, 0)
+	return err
+}
+
+// XfrmPolicyDel will delete an xfrm policy from the system. Note that
+// the Tmpls are ignored when matching the policy to delete.
+// Equivalent to: `ip xfrm policy del $policy`
+func XfrmPolicyDel(policy *XfrmPolicy) error {
+	req := nl.NewNetlinkRequest(nl.XFRM_MSG_DELPOLICY, syscall.NLM_F_ACK)
+
+	msg := &nl.XfrmUserpolicyId{}
+	selFromPolicy(&msg.Sel, policy)
+	msg.Index = uint32(policy.Index)
+	msg.Dir = uint8(policy.Dir)
+	req.AddData(msg)
+
+	_, err := req.Execute(syscall.NETLINK_XFRM, 0)
+	return err
+}
+
+// XfrmPolicyList gets a list of xfrm policies in the system.
+// Equivalent to: `ip xfrm policy show`.
+// The list can be filtered by ip family.
+func XfrmPolicyList(family int) ([]XfrmPolicy, error) {
+	req := nl.NewNetlinkRequest(nl.XFRM_MSG_GETPOLICY, syscall.NLM_F_DUMP)
+
+	msg := nl.NewIfInfomsg(family)
+	req.AddData(msg)
+
+	msgs, err := req.Execute(syscall.NETLINK_XFRM, nl.XFRM_MSG_NEWPOLICY)
+	if err != nil {
+		return nil, err
+	}
+
+	var res []XfrmPolicy
+	for _, m := range msgs {
+		msg := nl.DeserializeXfrmUserpolicyInfo(m)
+
+		if family != FAMILY_ALL && family != int(msg.Sel.Family) {
+			continue
+		}
+
+		var policy XfrmPolicy
+
+		policy.Dst = msg.Sel.Daddr.ToIPNet(msg.Sel.PrefixlenD)
+		policy.Src = msg.Sel.Saddr.ToIPNet(msg.Sel.PrefixlenS)
+		policy.Priority = int(msg.Priority)
+		policy.Index = int(msg.Index)
+		policy.Dir = Dir(msg.Dir)
+
+		attrs, err := nl.ParseRouteAttr(m[msg.Len():])
+		if err != nil {
+			return nil, err
+		}
+
+		for _, attr := range attrs {
+			switch attr.Attr.Type {
+			case nl.XFRMA_TMPL:
+				max := len(attr.Value)
+				for i := 0; i < max; i += nl.SizeofXfrmUserTmpl {
+					var resTmpl XfrmPolicyTmpl
+					tmpl := nl.DeserializeXfrmUserTmpl(attr.Value[i : i+nl.SizeofXfrmUserTmpl])
+					resTmpl.Dst = tmpl.XfrmId.Daddr.ToIP()
+					resTmpl.Src = tmpl.Saddr.ToIP()
+					resTmpl.Proto = Proto(tmpl.XfrmId.Proto)
+					resTmpl.Mode = Mode(tmpl.Mode)
+					resTmpl.Reqid = int(tmpl.Reqid)
+					policy.Tmpls = append(policy.Tmpls, resTmpl)
+				}
+			}
+		}
+		res = append(res, policy)
+	}
+	return res, nil
+}

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

@@ -0,0 +1,53 @@
+package netlink
+
+import (
+	"net"
+)
+
+// XfrmStateAlgo represents the algorithm to use for the ipsec encryption.
+type XfrmStateAlgo struct {
+	Name        string
+	Key         []byte
+	TruncateLen int // Auth only
+}
+
+// EncapType is an enum representing an ipsec template direction.
+type EncapType uint8
+
+const (
+	XFRM_ENCAP_ESPINUDP_NONIKE EncapType = iota + 1
+	XFRM_ENCAP_ESPINUDP
+)
+
+func (e EncapType) String() string {
+	switch e {
+	case XFRM_ENCAP_ESPINUDP_NONIKE:
+		return "espinudp-nonike"
+	case XFRM_ENCAP_ESPINUDP:
+		return "espinudp"
+	}
+	return "unknown"
+}
+
+// XfrmStateEncap represents the encapsulation to use for the ipsec encryption.
+type XfrmStateEncap struct {
+	Type            EncapType
+	SrcPort         int
+	DstPort         int
+	OriginalAddress net.IP
+}
+
+// XfrmState represents the state of an ipsec policy. It optionally
+// contains an XfrmStateAlgo for encryption and one for authentication.
+type XfrmState struct {
+	Dst          net.IP
+	Src          net.IP
+	Proto        Proto
+	Mode         Mode
+	Spi          int
+	Reqid        int
+	ReplayWindow int
+	Auth         *XfrmStateAlgo
+	Crypt        *XfrmStateAlgo
+	Encap        *XfrmStateEncap
+}

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

@@ -0,0 +1,178 @@
+package netlink
+
+import (
+	"fmt"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+func writeStateAlgo(a *XfrmStateAlgo) []byte {
+	algo := nl.XfrmAlgo{
+		AlgKeyLen: uint32(len(a.Key) * 8),
+		AlgKey:    a.Key,
+	}
+	end := len(a.Name)
+	if end > 64 {
+		end = 64
+	}
+	copy(algo.AlgName[:end], a.Name)
+	return algo.Serialize()
+}
+
+func writeStateAlgoAuth(a *XfrmStateAlgo) []byte {
+	algo := nl.XfrmAlgoAuth{
+		AlgKeyLen:   uint32(len(a.Key) * 8),
+		AlgTruncLen: uint32(a.TruncateLen),
+		AlgKey:      a.Key,
+	}
+	end := len(a.Name)
+	if end > 64 {
+		end = 64
+	}
+	copy(algo.AlgName[:end], a.Name)
+	return algo.Serialize()
+}
+
+// XfrmStateAdd will add an xfrm state to the system.
+// Equivalent to: `ip xfrm state add $state`
+func XfrmStateAdd(state *XfrmState) error {
+	// A state with spi 0 can't be deleted so don't allow it to be set
+	if state.Spi == 0 {
+		return fmt.Errorf("Spi must be set when adding xfrm state.")
+	}
+	req := nl.NewNetlinkRequest(nl.XFRM_MSG_NEWSA, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK)
+
+	msg := &nl.XfrmUsersaInfo{}
+	msg.Family = uint16(nl.GetIPFamily(state.Dst))
+	msg.Id.Daddr.FromIP(state.Dst)
+	msg.Saddr.FromIP(state.Src)
+	msg.Id.Proto = uint8(state.Proto)
+	msg.Mode = uint8(state.Mode)
+	msg.Id.Spi = nl.Swap32(uint32(state.Spi))
+	msg.Reqid = uint32(state.Reqid)
+	msg.ReplayWindow = uint8(state.ReplayWindow)
+	msg.Lft.SoftByteLimit = nl.XFRM_INF
+	msg.Lft.HardByteLimit = nl.XFRM_INF
+	msg.Lft.SoftPacketLimit = nl.XFRM_INF
+	msg.Lft.HardPacketLimit = nl.XFRM_INF
+	req.AddData(msg)
+
+	if state.Auth != nil {
+		out := nl.NewRtAttr(nl.XFRMA_ALG_AUTH_TRUNC, writeStateAlgoAuth(state.Auth))
+		req.AddData(out)
+	}
+	if state.Crypt != nil {
+		out := nl.NewRtAttr(nl.XFRMA_ALG_CRYPT, writeStateAlgo(state.Crypt))
+		req.AddData(out)
+	}
+	if state.Encap != nil {
+		encapData := make([]byte, nl.SizeofXfrmEncapTmpl)
+		encap := nl.DeserializeXfrmEncapTmpl(encapData)
+		encap.EncapType = uint16(state.Encap.Type)
+		encap.EncapSport = nl.Swap16(uint16(state.Encap.SrcPort))
+		encap.EncapDport = nl.Swap16(uint16(state.Encap.DstPort))
+		encap.EncapOa.FromIP(state.Encap.OriginalAddress)
+		out := nl.NewRtAttr(nl.XFRMA_ENCAP, encapData)
+		req.AddData(out)
+	}
+
+	_, err := req.Execute(syscall.NETLINK_XFRM, 0)
+	return err
+}
+
+// XfrmStateDel will delete an xfrm state from the system. Note that
+// the Algos are ignored when matching the state to delete.
+// Equivalent to: `ip xfrm state del $state`
+func XfrmStateDel(state *XfrmState) error {
+	req := nl.NewNetlinkRequest(nl.XFRM_MSG_DELSA, syscall.NLM_F_ACK)
+
+	msg := &nl.XfrmUsersaId{}
+	msg.Daddr.FromIP(state.Dst)
+	msg.Family = uint16(nl.GetIPFamily(state.Dst))
+	msg.Proto = uint8(state.Proto)
+	msg.Spi = nl.Swap32(uint32(state.Spi))
+	req.AddData(msg)
+
+	saddr := nl.XfrmAddress{}
+	saddr.FromIP(state.Src)
+	srcdata := nl.NewRtAttr(nl.XFRMA_SRCADDR, saddr.Serialize())
+
+	req.AddData(srcdata)
+
+	_, err := req.Execute(syscall.NETLINK_XFRM, 0)
+	return err
+}
+
+// XfrmStateList gets a list of xfrm states in the system.
+// Equivalent to: `ip xfrm state show`.
+// The list can be filtered by ip family.
+func XfrmStateList(family int) ([]XfrmState, error) {
+	req := nl.NewNetlinkRequest(nl.XFRM_MSG_GETSA, syscall.NLM_F_DUMP)
+
+	msgs, err := req.Execute(syscall.NETLINK_XFRM, nl.XFRM_MSG_NEWSA)
+	if err != nil {
+		return nil, err
+	}
+
+	var res []XfrmState
+	for _, m := range msgs {
+		msg := nl.DeserializeXfrmUsersaInfo(m)
+
+		if family != FAMILY_ALL && family != int(msg.Family) {
+			continue
+		}
+
+		var state XfrmState
+
+		state.Dst = msg.Id.Daddr.ToIP()
+		state.Src = msg.Saddr.ToIP()
+		state.Proto = Proto(msg.Id.Proto)
+		state.Mode = Mode(msg.Mode)
+		state.Spi = int(nl.Swap32(msg.Id.Spi))
+		state.Reqid = int(msg.Reqid)
+		state.ReplayWindow = int(msg.ReplayWindow)
+
+		attrs, err := nl.ParseRouteAttr(m[msg.Len():])
+		if err != nil {
+			return nil, err
+		}
+
+		for _, attr := range attrs {
+			switch attr.Attr.Type {
+			case nl.XFRMA_ALG_AUTH, nl.XFRMA_ALG_CRYPT:
+				var resAlgo *XfrmStateAlgo
+				if attr.Attr.Type == nl.XFRMA_ALG_AUTH {
+					if state.Auth == nil {
+						state.Auth = new(XfrmStateAlgo)
+					}
+					resAlgo = state.Auth
+				} else {
+					state.Crypt = new(XfrmStateAlgo)
+					resAlgo = state.Crypt
+				}
+				algo := nl.DeserializeXfrmAlgo(attr.Value[:])
+				(*resAlgo).Name = nl.BytesToString(algo.AlgName[:])
+				(*resAlgo).Key = algo.AlgKey
+			case nl.XFRMA_ALG_AUTH_TRUNC:
+				if state.Auth == nil {
+					state.Auth = new(XfrmStateAlgo)
+				}
+				algo := nl.DeserializeXfrmAlgoAuth(attr.Value[:])
+				state.Auth.Name = nl.BytesToString(algo.AlgName[:])
+				state.Auth.Key = algo.AlgKey
+				state.Auth.TruncateLen = int(algo.AlgTruncLen)
+			case nl.XFRMA_ENCAP:
+				encap := nl.DeserializeXfrmEncapTmpl(attr.Value[:])
+				state.Encap = new(XfrmStateEncap)
+				state.Encap.Type = EncapType(encap.EncapType)
+				state.Encap.SrcPort = int(nl.Swap16(encap.EncapSport))
+				state.Encap.DstPort = int(nl.Swap16(encap.EncapDport))
+				state.Encap.OriginalAddress = encap.EncapOa.ToIP()
+			}
+
+		}
+		res = append(res, state)
+	}
+	return res, nil
+}