Update of netlink version

This is required for
https://github.com/containernetworking/cni/issues/251 because version of
netlink used doesn't support creating tap devices.

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

@@ -2,21 +2,27 @@ 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
 }
 
-// Qdisc represents a netlink qdisc. A qdisc is associated with a link,
+// 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 {
@@ -27,7 +33,7 @@ type QdiscAttrs struct {
 }
 
 func (q QdiscAttrs) String() string {
-	return fmt.Sprintf("{LinkIndex: %d, Handle: %s, Parent: %s, Refcnt: %s}", q.LinkIndex, HandleStr(q.Handle), HandleStr(q.Parent), q.Refcnt)
+	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 {
@@ -52,6 +58,14 @@ func HandleStr(handle uint32) string {
 	}
 }
 
+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 {
@@ -120,6 +134,56 @@ 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 (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