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Vendoring vishvananda/netlink 734d02c 

Signed-off-by: Alessandro Boch <aboch@docker.com>
(cherry picked from commit 58b8b8fa1555223c1144f08fc4536ffaa4d12fd0)
This commit is contained in:
Alessandro Boch 2016-06-22 09:31:55 -07:00 committed by Tibor Vass
parent ae0648fca8
commit e928358dfb
24 changed files with 438 additions and 330 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hack/vendor.sh
View File

@ -75,7 +75,7 @@ clone git github.com/hashicorp/go-multierror fcdddc395df1ddf4247c69bd436e84cfa07
clone git github.com/hashicorp/serf 598c54895cc5a7b1a24a398d635e8c0ea0959870
clone git github.com/docker/libkv 7283ef27ed32fe267388510a91709b307bb9942c
clone git github.com/vishvananda/netns 604eaf189ee867d8c147fafc28def2394e878d25
clone git github.com/vishvananda/netlink 7995ff5647a22cbf0dc41bf5c0e977bdb0d5c6b7
clone git github.com/vishvananda/netlink 734d02c3e202f682c74b71314b2c61eec0170fd4
clone git github.com/BurntSushi/toml f706d00e3de6abe700c994cdd545a1a4915af060
clone git github.com/samuel/go-zookeeper d0e0d8e11f318e000a8cc434616d69e329edc374
clone git github.com/deckarep/golang-set ef32fa3046d9f249d399f98ebaf9be944430fd1d

2
vendor/src/github.com/vishvananda/netlink/README.md vendored
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@ -8,7 +8,7 @@ the kernel. It can be used to add and remove interfaces, set ip addresses
and routes, and configure ipsec. Netlink communication requires elevated
privileges, so in most cases this code needs to be run as root. Since
low-level netlink messages are inscrutable at best, the library attempts
to provide an api that is loosely modeled on the CLI provied by iproute2.
to provide an api that is loosely modeled on the CLI provided by iproute2.
Actions like `ip link add` will be accomplished via a similarly named
function like AddLink(). This library began its life as a fork of the
netlink functionality in

33
vendor/src/github.com/vishvananda/netlink/class.go vendored
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@ -50,39 +50,6 @@ type HtbClass struct {
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)
}

34
vendor/src/github.com/vishvananda/netlink/class_linux.go vendored
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@ -7,6 +7,40 @@ import (
"github.com/vishvananda/netlink/nl"
)
// NOTE: function is in here because it uses other linux functions
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,
}
}
// ClassDel will delete a class from the system.
// Equivalent to: `tc class del $class`
func ClassDel(class Class) error {

75
vendor/src/github.com/vishvananda/netlink/filter.go vendored
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@ -1,11 +1,6 @@
package netlink
import (
"errors"
"fmt"
"github.com/vishvananda/netlink/nl"
)
import "fmt"
type Filter interface {
Attrs() *FilterAttrs
@ -217,74 +212,6 @@ type FilterFwAttrs struct {
LinkLayer int
}
// Fw filter filters on firewall marks
type Fw struct {
FilterAttrs
ClassId uint32
// TODO remove nl type from interface
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

75
vendor/src/github.com/vishvananda/netlink/filter_linux.go vendored
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@ -3,12 +3,83 @@ package netlink
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"syscall"
"github.com/vishvananda/netlink/nl"
)
// Fw filter filters on firewall marks
// NOTE: this is in filter_linux because it refers to nl.TcPolice which
// is defined in nl/tc_linux.go
type Fw struct {
FilterAttrs
ClassId uint32
// TODO remove nl type from interface
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"
}
// FilterDel will delete a filter from the system.
// Equivalent to: `tc filter del $filter`
func FilterDel(filter Filter) error {
@ -126,14 +197,14 @@ func (h *Handle) FilterAdd(filter Filter) error {
// FilterList gets a list of filters in the system.
// Equivalent to: `tc filter show`.
// Generally retunrs nothing if link and parent are not specified.
// Generally returns nothing if link and parent are not specified.
func FilterList(link Link, parent uint32) ([]Filter, error) {
return pkgHandle.FilterList(link, parent)
}
// FilterList gets a list of filters in the system.
// Equivalent to: `tc filter show`.
// Generally retunrs nothing if link and parent are not specified.
// Generally returns nothing if link and parent are not specified.
func (h *Handle) FilterList(link Link, parent uint32) ([]Filter, error) {
req := h.newNetlinkRequest(syscall.RTM_GETTFILTER, syscall.NLM_F_DUMP)
msg := &nl.TcMsg{

86
vendor/src/github.com/vishvananda/netlink/handle.go vendored
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@ -1,86 +0,0 @@
package netlink
import (
"sync/atomic"
"syscall"
"github.com/vishvananda/netlink/nl"
"github.com/vishvananda/netns"
)
// Empty handle used by the netlink package methods
var pkgHandle = &Handle{}
// Handle is an handle for the netlink requests
// on a specific network namespace. All the requests
// share the same netlink socket, which gets released
// when the handle is deleted.
type Handle struct {
seq uint32
routeSocket *nl.NetlinkSocket
xfrmSocket *nl.NetlinkSocket
lookupByDump bool
}
// NewHandle returns a netlink handle on the current network namespace.
func NewHandle() (*Handle, error) {
return newHandle(netns.None(), netns.None())
}
// NewHandle returns a netlink handle on the network namespace
// specified by ns. If ns=netns.None(), current network namespace
// will be assumed
func NewHandleAt(ns netns.NsHandle) (*Handle, error) {
return newHandle(ns, netns.None())
}
// NewHandleAtFrom works as NewHandle but allows client to specify the
// new and the origin netns Handle.
func NewHandleAtFrom(newNs, curNs netns.NsHandle) (*Handle, error) {
return newHandle(newNs, curNs)
}
func newHandle(newNs, curNs netns.NsHandle) (*Handle, error) {
var (
err error
rSocket *nl.NetlinkSocket
xSocket *nl.NetlinkSocket
)
rSocket, err = nl.GetNetlinkSocketAt(newNs, curNs, syscall.NETLINK_ROUTE)
if err != nil {
return nil, err
}
xSocket, err = nl.GetNetlinkSocketAt(newNs, curNs, syscall.NETLINK_XFRM)
if err != nil {
return nil, err
}
return &Handle{routeSocket: rSocket, xfrmSocket: xSocket}, nil
}
// Delete releases the resources allocated to this handle
func (h *Handle) Delete() {
if h.routeSocket != nil {
h.routeSocket.Close()
}
if h.xfrmSocket != nil {
h.xfrmSocket.Close()
}
h.routeSocket, h.xfrmSocket = nil, nil
}
func (h *Handle) newNetlinkRequest(proto, flags int) *nl.NetlinkRequest {
// Do this so that package API still use nl package variable nextSeqNr
if h.routeSocket == nil {
return nl.NewNetlinkRequest(proto, flags)
}
return &nl.NetlinkRequest{
NlMsghdr: syscall.NlMsghdr{
Len: uint32(syscall.SizeofNlMsghdr),
Type: uint16(proto),
Flags: syscall.NLM_F_REQUEST | uint16(flags),
Seq: atomic.AddUint32(&h.seq, 1),
},
RouteSocket: h.routeSocket,
XfmrSocket: h.xfrmSocket,
}
}

86
vendor/src/github.com/vishvananda/netlink/handle_linux.go vendored Normal file
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@ -0,0 +1,86 @@
package netlink
import (
"syscall"
"github.com/vishvananda/netlink/nl"
"github.com/vishvananda/netns"
)
// Empty handle used by the netlink package methods
var pkgHandle = &Handle{}
// Handle is an handle for the netlink requests on a
// specific network namespace. All the requests on the
// same netlink family share the same netlink socket,
// which gets released when the handle is deleted.
type Handle struct {
sockets map[int]*nl.SocketHandle
lookupByDump bool
}
// SupportsNetlinkFamily reports whether the passed netlink family is supported by this Handle
func (h *Handle) SupportsNetlinkFamily(nlFamily int) bool {
_, ok := h.sockets[nlFamily]
return ok
}
// NewHandle returns a netlink handle on the current network namespace.
// Caller may specify the netlink families the handle should support.
// If no families are specified, all the families the netlink package
// supports will be automatically added.
func NewHandle(nlFamilies ...int) (*Handle, error) {
return newHandle(netns.None(), netns.None(), nlFamilies...)
}
// NewHandle returns a netlink handle on the network namespace
// specified by ns. If ns=netns.None(), current network namespace
// will be assumed
func NewHandleAt(ns netns.NsHandle, nlFamilies ...int) (*Handle, error) {
return newHandle(ns, netns.None(), nlFamilies...)
}
// NewHandleAtFrom works as NewHandle but allows client to specify the
// new and the origin netns Handle.
func NewHandleAtFrom(newNs, curNs netns.NsHandle) (*Handle, error) {
return newHandle(newNs, curNs)
}
func newHandle(newNs, curNs netns.NsHandle, nlFamilies ...int) (*Handle, error) {
h := &Handle{sockets: map[int]*nl.SocketHandle{}}
fams := nl.SupportedNlFamilies
if len(nlFamilies) != 0 {
fams = nlFamilies
}
for _, f := range fams {
s, err := nl.GetNetlinkSocketAt(newNs, curNs, f)
if err != nil {
return nil, err
}
h.sockets[f] = &nl.SocketHandle{Socket: s}
}
return h, nil
}
// Delete releases the resources allocated to this handle
func (h *Handle) Delete() {
for _, sh := range h.sockets {
sh.Close()
}
h.sockets = nil
}
func (h *Handle) newNetlinkRequest(proto, flags int) *nl.NetlinkRequest {
// Do this so that package API still use nl package variable nextSeqNr
if h.sockets == nil {
return nl.NewNetlinkRequest(proto, flags)
}
return &nl.NetlinkRequest{
NlMsghdr: syscall.NlMsghdr{
Len: uint32(syscall.SizeofNlMsghdr),
Type: uint16(proto),
Flags: syscall.NLM_F_REQUEST | uint16(flags),
},
Sockets: h.sockets,
}
}

6
vendor/src/github.com/vishvananda/netlink/link.go vendored
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@ -3,7 +3,6 @@ package netlink
import (
"fmt"
"net"
"syscall"
)
// Link represents a link device from netlink. Shared link attributes
@ -173,11 +172,6 @@ func (macvtap Macvtap) Type() string {
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

10
vendor/src/github.com/vishvananda/netlink/link_linux.go vendored
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@ -14,6 +14,11 @@ import (
const SizeofLinkStats = 0x5c
const (
TUNTAP_MODE_TUN TuntapMode = syscall.IFF_TUN
TUNTAP_MODE_TAP TuntapMode = syscall.IFF_TAP
)
var native = nl.NativeEndian()
var lookupByDump = false
@ -675,6 +680,11 @@ func (h *Handle) LinkAdd(link Link) error {
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[macv.Mode]))
}
} else if macv, ok := link.(*Macvtap); ok {
if macv.Mode != MACVLAN_MODE_DEFAULT {
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[macv.Mode]))
}
} else if gretap, ok := link.(*Gretap); ok {
addGretapAttrs(gretap, linkInfo)
}

13
vendor/src/github.com/vishvananda/netlink/netlink.go vendored
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@ -8,18 +8,7 @@
// 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
)
import "net"
// ParseIPNet parses a string in ip/net format and returns a net.IPNet.
// This is valuable because addresses in netlink are often IPNets and

10
vendor/src/github.com/vishvananda/netlink/netlink_linux.go vendored Normal file
View File

@ -0,0 +1,10 @@
package netlink
import "github.com/vishvananda/netlink/nl"
// Family type definitions
const (
FAMILY_ALL = nl.FAMILY_ALL
FAMILY_V4 = nl.FAMILY_V4
FAMILY_V6 = nl.FAMILY_V6
)

4
vendor/src/github.com/vishvananda/netlink/netlink_unspecified.go vendored
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@ -138,6 +138,6 @@ func NeighList(linkIndex, family int) ([]Neigh, error) {
return nil, ErrNotImplemented
}
func NeighDeserialize(m []byte) (*Ndmsg, *Neigh, error) {
return nil, nil, ErrNotImplemented
func NeighDeserialize(m []byte) (*Neigh, error) {
return nil, ErrNotImplemented
}

37
vendor/src/github.com/vishvananda/netlink/nl/nl_linux.go vendored
View File

@ -22,6 +22,9 @@ const (
FAMILY_V6 = syscall.AF_INET6
)
// SupportedNlFamilies contains the list of netlink families this netlink package supports
var SupportedNlFamilies = []int{syscall.NETLINK_ROUTE, syscall.NETLINK_XFRM}
var nextSeqNr uint32
// GetIPFamily returns the family type of a net.IP.
@ -175,9 +178,8 @@ func (a *RtAttr) Serialize() []byte {
type NetlinkRequest struct {
syscall.NlMsghdr
Data []NetlinkRequestData
RouteSocket *NetlinkSocket
XfmrSocket *NetlinkSocket
Data []NetlinkRequestData
Sockets map[int]*SocketHandle
}
// Serialize the Netlink Request into a byte array
@ -209,7 +211,7 @@ func (req *NetlinkRequest) AddData(data NetlinkRequestData) {
}
// Execute the request against a the given sockType.
// Returns a list of netlink messages in seriaized format, optionally filtered
// Returns a list of netlink messages in serialized format, optionally filtered
// by resType.
func (req *NetlinkRequest) Execute(sockType int, resType uint16) ([][]byte, error) {
var (
@ -217,15 +219,12 @@ func (req *NetlinkRequest) Execute(sockType int, resType uint16) ([][]byte, erro
err error
)
switch sockType {
case syscall.NETLINK_XFRM:
s = req.XfmrSocket
case syscall.NETLINK_ROUTE:
s = req.RouteSocket
default:
return nil, fmt.Errorf("Socket type %d is not handled", sockType)
if req.Sockets != nil {
if sh, ok := req.Sockets[sockType]; ok {
s = sh.Socket
req.Seq = atomic.AddUint32(&sh.Seq, 1)
}
}
sharedSocket := s != nil
if s == nil {
@ -486,3 +485,17 @@ func netlinkRouteAttrAndValue(b []byte) (*syscall.RtAttr, []byte, int, error) {
}
return a, b[syscall.SizeofRtAttr:], rtaAlignOf(int(a.Len)), nil
}
// SocketHandle contains the netlink socket and the associated
// sequence counter for a specific netlink family
type SocketHandle struct {
Seq uint32
Socket *NetlinkSocket
}
// Close closes the netlink socket
func (sh *SocketHandle) Close() {
if sh.Socket != nil {
sh.Socket.Close()
}
}

12
vendor/src/github.com/vishvananda/netlink/nl/route_linux.go vendored
View File

@ -40,3 +40,15 @@ func DeserializeRtMsg(b []byte) *RtMsg {
func (msg *RtMsg) Serialize() []byte {
return (*(*[syscall.SizeofRtMsg]byte)(unsafe.Pointer(msg)))[:]
}
type RtNexthop struct {
syscall.RtNexthop
}
func DeserializeRtNexthop(b []byte) *RtNexthop {
return (*RtNexthop)(unsafe.Pointer(&b[0:syscall.SizeofRtNexthop][0]))
}
func (msg *RtNexthop) Serialize() []byte {
return (*(*[syscall.SizeofRtNexthop]byte)(unsafe.Pointer(msg)))[:]
}

64
vendor/src/github.com/vishvananda/netlink/qdisc.go vendored
View File

@ -176,70 +176,6 @@ type Netem struct {
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
}

65
vendor/src/github.com/vishvananda/netlink/qdisc_linux.go vendored
View File

@ -10,6 +10,71 @@ import (
"github.com/vishvananda/netlink/nl"
)
// NOTE function is here because it uses other linux functions
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,
}
}
// QdiscDel will delete a qdisc from the system.
// Equivalent to: `tc qdisc del $qdisc`
func QdiscDel(qdisc Qdisc) error {

44
vendor/src/github.com/vishvananda/netlink/route.go vendored
View File

@ -3,27 +3,13 @@ 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
@ -32,6 +18,7 @@ type Route struct {
Dst *net.IPNet
Src net.IP
Gw net.IP
MultiPath []*NexthopInfo
Protocol int
Priority int
Table int
@ -41,6 +28,10 @@ type Route struct {
}
func (r Route) String() string {
if len(r.MultiPath) > 0 {
return fmt.Sprintf("{Dst: %s Src: %s Gw: %s Flags: %s Table: %d}", r.Dst,
r.Src, r.MultiPath, r.ListFlags(), r.Table)
}
return fmt.Sprintf("{Ifindex: %d Dst: %s Src: %s Gw: %s Flags: %s Table: %d}", r.LinkIndex, r.Dst,
r.Src, r.Gw, r.ListFlags(), r.Table)
}
@ -58,23 +49,18 @@ type flagString struct {
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
}
type NexthopInfo struct {
LinkIndex int
Hops int
Gw net.IP
}
func (n *NexthopInfo) String() string {
return fmt.Sprintf("{Ifindex: %d Weight: %d, Gw: %s}", n.LinkIndex, n.Hops+1, n.Gw)
}

93
vendor/src/github.com/vishvananda/netlink/route_linux.go vendored
View File

@ -10,6 +10,14 @@ import (
// RtAttr is shared so it is in netlink_linux.go
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
)
const (
RT_FILTER_PROTOCOL uint64 = 1 << (1 + iota)
RT_FILTER_SCOPE
@ -23,6 +31,26 @@ const (
RT_FILTER_TABLE
)
const (
FLAG_ONLINK NextHopFlag = syscall.RTNH_F_ONLINK
FLAG_PERVASIVE NextHopFlag = syscall.RTNH_F_PERVASIVE
)
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
}
// RouteAdd will add a route to the system.
// Equivalent to: `ip route add $route`
func RouteAdd(route *Route) error {
@ -102,6 +130,37 @@ func (h *Handle) routeHandle(route *Route, req *nl.NetlinkRequest, msg *nl.RtMsg
rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_GATEWAY, gwData))
}
if len(route.MultiPath) > 0 {
buf := []byte{}
for _, nh := range route.MultiPath {
rtnh := &nl.RtNexthop{
RtNexthop: syscall.RtNexthop{
Hops: uint8(nh.Hops),
Ifindex: int32(nh.LinkIndex),
Len: uint16(syscall.SizeofRtNexthop),
},
}
var gwData []byte
if nh.Gw != nil {
gwFamily := nl.GetIPFamily(nh.Gw)
if family != -1 && family != gwFamily {
return fmt.Errorf("gateway, source, and destination ip are not the same IP family")
}
var gw *nl.RtAttr
if gwFamily == FAMILY_V4 {
gw = nl.NewRtAttr(syscall.RTA_GATEWAY, []byte(nh.Gw.To4()))
} else {
gw = nl.NewRtAttr(syscall.RTA_GATEWAY, []byte(nh.Gw.To16()))
}
gwData := gw.Serialize()
rtnh.Len += uint16(len(gwData))
}
buf = append(buf, rtnh.Serialize()...)
buf = append(buf, gwData...)
}
rtAttrs = append(rtAttrs, nl.NewRtAttr(syscall.RTA_MULTIPATH, buf))
}
if route.Table > 0 {
if route.Table >= 256 {
msg.Table = syscall.RT_TABLE_UNSPEC
@ -275,6 +334,40 @@ func deserializeRoute(m []byte) (Route, error) {
route.Priority = int(native.Uint32(attr.Value[0:4]))
case syscall.RTA_TABLE:
route.Table = int(native.Uint32(attr.Value[0:4]))
case syscall.RTA_MULTIPATH:
parseRtNexthop := func(value []byte) (*NexthopInfo, []byte, error) {
if len(value) < syscall.SizeofRtNexthop {
return nil, nil, fmt.Errorf("Lack of bytes")
}
nh := nl.DeserializeRtNexthop(value)
if len(value) < int(nh.RtNexthop.Len) {
return nil, nil, fmt.Errorf("Lack of bytes")
}
info := &NexthopInfo{
LinkIndex: int(nh.RtNexthop.Ifindex),
Hops: int(nh.RtNexthop.Hops),
}
attrs, err := nl.ParseRouteAttr(value[syscall.SizeofRtNexthop:int(nh.RtNexthop.Len)])
if err != nil {
return nil, nil, err
}
for _, attr := range attrs {
switch attr.Attr.Type {
case syscall.RTA_GATEWAY:
info.Gw = net.IP(attr.Value)
}
}
return info, value[int(nh.RtNexthop.Len):], nil
}
rest := attr.Value
for len(rest) > 0 {
info, buf, err := parseRtNexthop(rest)
if err != nil {
return route, err
}
route.MultiPath = append(route.MultiPath, info)
rest = buf
}
}
}
return route, nil

7
vendor/src/github.com/vishvananda/netlink/route_unspecified.go vendored Normal file
View File

@ -0,0 +1,7 @@
// +build !linux
package netlink
func (r *Route) ListFlags() []string {
return []string{}
}

3
vendor/src/github.com/vishvananda/netlink/rule.go vendored
View File

@ -3,13 +3,10 @@ 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

1
vendor/src/github.com/vishvananda/netlink/rule_linux.go vendored
View File

@ -165,7 +165,6 @@ func (h *Handle) RuleList(family int) ([]Rule, error) {
}
rule := NewRule()
rule.RtMsg = msg
for j := range attrs {
switch attrs[j].Attr.Type {

2
vendor/src/github.com/vishvananda/netlink/xfrm.go vendored
View File

@ -13,7 +13,7 @@ const (
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_COMP Proto = 0x6c // NOTE not defined on darwin
XFRM_PROTO_IPSEC_ANY Proto = syscall.IPPROTO_RAW
)

4
vendor/src/github.com/vishvananda/netlink/xfrm_state.go vendored
View File

@ -3,8 +3,6 @@ package netlink
import (
"fmt"
"net"
"github.com/vishvananda/netlink/nl"
)
// XfrmStateAlgo represents the algorithm to use for the ipsec encryption.
@ -93,7 +91,7 @@ func (sa XfrmState) Print(stats bool) string {
}
func printLimit(lmt uint64) string {
if lmt == nl.XFRM_INF {
if lmt == ^uint64(0) {
return "(INF)"
}
return fmt.Sprintf("%d", lmt)