9 "go.fd.io/govpp/binapi/ethernet_types"
10 "go.fd.io/govpp/binapi/interface_types"
11 "go.fd.io/govpp/binapi/ip_types"
15 MacAddress = ethernet_types.MacAddress
16 AddressWithPrefix = ip_types.AddressWithPrefix
17 IP4AddressWithPrefix = ip_types.IP4AddressWithPrefix
18 InterfaceIndex = interface_types.InterfaceIndex
27 NetConfigBase struct {
29 category string // what else to call this when `type` is reserved?
32 NetInterface interface {
35 AddressWithPrefix() AddressWithPrefix
36 IP4AddressWithPrefix() IP4AddressWithPrefix
37 IP4AddressString() string
38 SetIndex(InterfaceIndex)
39 Index() InterfaceIndex
40 HwAddress() MacAddress
43 NetInterfaceBase struct {
46 ip4Address string // this will have form 10.10.10.1/24
49 networkNamespace string
53 NetworkInterfaceVeth struct {
55 peerNetworkNamespace string
61 NetworkInterfaceTap struct {
65 NetworkNamespace struct {
69 NetworkBridge struct {
71 networkNamespace string
77 NetNs string = "netns"
80 Bridge string = "bridge"
83 func (b *NetConfigBase) Name() string {
87 func (b *NetConfigBase) Type() string {
91 func (b *NetInterfaceBase) SetAddress(address string) {
92 b.ip4Address = address
95 func (b *NetInterfaceBase) SetIndex(index InterfaceIndex) {
99 func (b *NetInterfaceBase) Index() InterfaceIndex {
103 func (b *NetInterfaceBase) AddressWithPrefix() AddressWithPrefix {
104 address, _ := ip_types.ParseAddressWithPrefix(b.ip4Address)
108 func (b *NetInterfaceBase) IP4AddressWithPrefix() IP4AddressWithPrefix {
109 IP4Prefix, _ := ip_types.ParseIP4Prefix(b.ip4Address)
110 IP4AddressWithPrefix := ip_types.IP4AddressWithPrefix(IP4Prefix)
111 return IP4AddressWithPrefix
114 func (b *NetInterfaceBase) IP4AddressString() string {
115 return strings.Split(b.ip4Address, "/")[0]
118 func (b *NetInterfaceBase) HwAddress() MacAddress {
122 func NewVeth(cfg NetDevConfig, a *Addresser) (NetworkInterfaceVeth, error) {
123 var veth NetworkInterfaceVeth
126 veth.name = cfg["name"].(string)
127 veth.category = "veth"
128 veth.peerNetworkNumber = defaultNetworkNumber
130 if cfg["preset-hw-address"] != nil {
131 veth.hwAddress, err = ethernet_types.ParseMacAddress(cfg["preset-hw-address"].(string))
133 return NetworkInterfaceVeth{}, err
137 if netns, ok := cfg["netns"]; ok {
138 veth.networkNamespace = netns.(string)
141 if ip, ok := cfg["ip4"]; ok {
142 if n, ok := ip.(NetDevConfig)["network"]; ok {
143 veth.networkNumber = n.(int)
145 veth.ip4Address, err = veth.addresser.NewIp4Address(veth.networkNumber)
147 return NetworkInterfaceVeth{}, err
151 peer := cfg["peer"].(NetDevConfig)
153 veth.peerName = peer["name"].(string)
155 if peer["netns"] != nil {
156 veth.peerNetworkNamespace = peer["netns"].(string)
159 if peerIp, ok := peer["ip4"]; ok {
160 if n, ok := peerIp.(NetDevConfig)["network"]; ok {
161 veth.peerNetworkNumber = n.(int)
163 veth.peerIp4Address, err = veth.addresser.NewIp4Address(veth.peerNetworkNumber)
165 return NetworkInterfaceVeth{}, err
172 func (iface *NetworkInterfaceVeth) Configure() error {
173 err := AddVethPair(iface.name, iface.peerName)
178 if iface.networkNamespace != "" {
179 err := LinkSetNetns(iface.name, iface.networkNamespace)
185 if iface.peerNetworkNamespace != "" {
186 err := LinkSetNetns(iface.peerName, iface.peerNetworkNamespace)
192 if iface.ip4Address != "" {
196 iface.networkNamespace,
200 if iface.peerIp4Address != "" {
203 iface.peerIp4Address,
204 iface.peerNetworkNamespace,
207 return fmt.Errorf("failed to add configure address for %s: %v", iface.peerName, err)
213 func (iface *NetworkInterfaceVeth) Unconfigure() {
217 func (iface *NetworkInterfaceVeth) PeerIp4AddressString() string {
218 return strings.Split(iface.peerIp4Address, "/")[0]
221 func NewTap(cfg NetDevConfig, a *Addresser) (NetworkInterfaceTap, error) {
222 var tap NetworkInterfaceTap
224 tap.name = cfg["name"].(string)
226 ip4Address, err := tap.addresser.NewIp4Address()
228 return NetworkInterfaceTap{}, err
230 tap.SetAddress(ip4Address)
234 func (iface *NetworkInterfaceTap) Configure() error {
235 err := AddTap(iface.name, iface.IP4AddressString())
242 func (iface *NetworkInterfaceTap) Unconfigure() {
246 func NewNetNamespace(cfg NetDevConfig) (NetworkNamespace, error) {
247 var networkNamespace NetworkNamespace
248 networkNamespace.name = cfg["name"].(string)
249 networkNamespace.category = "netns"
250 return networkNamespace, nil
253 func (ns *NetworkNamespace) Configure() error {
254 return addDelNetns(ns.name, true)
257 func (ns *NetworkNamespace) Unconfigure() {
258 addDelNetns(ns.name, false)
261 func NewBridge(cfg NetDevConfig) (NetworkBridge, error) {
262 var bridge NetworkBridge
263 bridge.name = cfg["name"].(string)
264 bridge.category = "bridge"
265 for _, v := range cfg["interfaces"].([]interface{}) {
266 bridge.interfaces = append(bridge.interfaces, v.(string))
269 bridge.networkNamespace = ""
270 if netns, ok := cfg["netns"]; ok {
271 bridge.networkNamespace = netns.(string)
276 func (b *NetworkBridge) Configure() error {
277 return AddBridge(b.name, b.interfaces, b.networkNamespace)
280 func (b *NetworkBridge) Unconfigure() {
281 DelBridge(b.name, b.networkNamespace)
284 func DelBridge(brName, ns string) error {
285 err := SetDevDown(brName, ns)
290 err = addDelBridge(brName, ns, false)
298 func SetDevUp(dev, ns string) error {
299 return setDevUpDown(dev, ns, true)
302 func SetDevDown(dev, ns string) error {
303 return setDevUpDown(dev, ns, false)
306 func AddTap(ifName, ifAddress string) error {
307 cmd := exec.Command("ip", "tuntap", "add", ifName, "mode", "tap")
308 o, err := cmd.CombinedOutput()
310 s := fmt.Sprintf("error creating tap %s: %v: %s", ifName, err, string(o))
314 cmd = exec.Command("ip", "addr", "add", ifAddress, "dev", ifName)
318 s := fmt.Sprintf("error setting addr for tap %s: %v", ifName, err)
322 err = SetDevUp(ifName, "")
330 func DelLink(ifName string) {
331 cmd := exec.Command("ip", "link", "del", ifName)
335 func setDevUpDown(dev, ns string, isUp bool) error {
342 c := []string{"ip", "link", "set", "dev", dev, op}
343 cmd := appendNetns(c, ns)
346 s := fmt.Sprintf("error bringing %s device %s!", dev, op)
352 func AddVethPair(ifName, peerName string) error {
353 cmd := exec.Command("ip", "link", "add", ifName, "type", "veth", "peer", "name", peerName)
356 return fmt.Errorf("creating veth pair '%v/%v' failed: %v", ifName, peerName, err)
358 err = SetDevUp(ifName, "")
360 return fmt.Errorf("set link up failed: %v", err)
362 err = SetDevUp(peerName, "")
364 return fmt.Errorf("set link up failed: %v", err)
369 func addDelNetns(name string, isAdd bool) error {
376 cmd := exec.Command("ip", "netns", op, name)
377 _, err := cmd.CombinedOutput()
379 return errors.New("add/del netns failed")
384 func AddNetns(nsName string) error {
385 return addDelNetns(nsName, true)
388 func DelNetns(nsName string) error {
389 return addDelNetns(nsName, false)
392 func LinkSetNetns(ifName, ns string) error {
393 cmd := exec.Command("ip", "link", "set", "dev", ifName, "up", "netns", ns)
396 return fmt.Errorf("error setting device '%s' to netns '%s: %v", ifName, ns, err)
401 func NewCommand(s []string, ns string) *exec.Cmd {
402 return appendNetns(s, ns)
405 func appendNetns(s []string, ns string) *exec.Cmd {
408 // use default namespace
409 cmd = exec.Command(s[0], s[1:]...)
411 var args = []string{"netns", "exec", ns}
412 args = append(args, s[:]...)
413 cmd = exec.Command("ip", args...)
418 func addDelBridge(brName, ns string, isAdd bool) error {
425 var c = []string{"brctl", op, brName}
426 cmd := appendNetns(c, ns)
429 s := fmt.Sprintf("%s %s failed!", op, brName)
435 func AddBridge(brName string, ifs []string, ns string) error {
436 err := addDelBridge(brName, ns, true)
441 for _, v := range ifs {
442 c := []string{"brctl", "addif", brName, v}
443 cmd := appendNetns(c, ns)
446 s := fmt.Sprintf("error adding %s to bridge %s: %v", v, brName, err)
450 err = SetDevUp(brName, ns)