13 "github.com/edwarnicke/exechelper"
17 "go.fd.io/govpp/binapi/af_packet"
18 interfaces "go.fd.io/govpp/binapi/interface"
19 "go.fd.io/govpp/binapi/interface_types"
20 "go.fd.io/govpp/binapi/session"
21 "go.fd.io/govpp/binapi/tapv2"
22 "go.fd.io/govpp/binapi/vpe"
26 const vppConfigTemplate = `unix {
31 runtime-dir %[1]s/var/run
44 socket-name %[1]s%[3]s
48 socket-name %[1]s/var/run/vpp/stats.sock
52 plugin default { disable }
54 plugin unittest_plugin.so { enable }
55 plugin quic_plugin.so { enable }
56 plugin af_packet_plugin.so { enable }
57 plugin hs_apps_plugin.so { enable }
58 plugin http_plugin.so { enable }
62 default-log-level debug
63 default-syslog-log-level debug
69 defaultCliSocketFilePath = "/var/run/vpp/cli.sock"
70 defaultApiSocketFilePath = "/var/run/vpp/api.sock"
71 defaultLogFilePath = "/var/log/vpp/vpp.log"
74 type VppInstance struct {
76 additionalConfig []Stanza
77 connection *core.Connection
78 apiChannel api.Channel
82 func (vpp *VppInstance) getSuite() *HstSuite {
83 return vpp.container.suite
86 func (vpp *VppInstance) getCliSocket() string {
87 return fmt.Sprintf("%s%s", vpp.container.getContainerWorkDir(), defaultCliSocketFilePath)
90 func (vpp *VppInstance) getRunDir() string {
91 return vpp.container.getContainerWorkDir() + "/var/run/vpp"
94 func (vpp *VppInstance) getLogDir() string {
95 return vpp.container.getContainerWorkDir() + "/var/log/vpp"
98 func (vpp *VppInstance) getEtcDir() string {
99 return vpp.container.getContainerWorkDir() + "/etc/vpp"
102 func (vpp *VppInstance) start() error {
104 containerWorkDir := vpp.container.getContainerWorkDir()
106 vpp.container.exec("mkdir --mode=0700 -p " + vpp.getRunDir())
107 vpp.container.exec("mkdir --mode=0700 -p " + vpp.getLogDir())
108 vpp.container.exec("mkdir --mode=0700 -p " + vpp.getEtcDir())
110 // Create startup.conf inside the container
111 configContent := fmt.Sprintf(
114 defaultCliSocketFilePath,
115 defaultApiSocketFilePath,
118 configContent += vpp.generateCpuConfig()
119 for _, c := range vpp.additionalConfig {
120 configContent += c.toString()
122 startupFileName := vpp.getEtcDir() + "/startup.conf"
123 vpp.container.createFile(startupFileName, configContent)
125 // create wrapper script for vppctl with proper CLI socket path
126 cliContent := "#!/usr/bin/bash\nvppctl -s " + vpp.getRunDir() + "/cli.sock"
127 vppcliFileName := "/usr/bin/vppcli"
128 vpp.container.createFile(vppcliFileName, cliContent)
129 vpp.container.exec("chmod 0755 " + vppcliFileName)
132 sig := make(chan os.Signal, 1)
133 signal.Notify(sig, syscall.SIGINT)
134 cont := make(chan bool, 1)
140 vpp.container.execServer("su -c \"vpp -c " + startupFileName + " &> /proc/1/fd/1\"")
141 fmt.Println("run following command in different terminal:")
142 fmt.Println("docker exec -it " + vpp.container.name + " gdb -ex \"attach $(docker exec " + vpp.container.name + " pidof vpp)\"")
143 fmt.Println("Afterwards press CTRL+C to continue")
145 fmt.Println("continuing...")
148 vpp.container.execServer("su -c \"vpp -c " + startupFileName + " &> /proc/1/fd/1\"")
151 // Connect to VPP and store the connection
152 sockAddress := vpp.container.getHostWorkDir() + defaultApiSocketFilePath
153 conn, connEv, err := govpp.AsyncConnect(
155 core.DefaultMaxReconnectAttempts,
156 core.DefaultReconnectInterval)
158 fmt.Println("async connect error: ", err)
160 vpp.connection = conn
162 // ... wait for Connected event
164 if e.State != core.Connected {
165 fmt.Println("connecting to VPP failed: ", e.Error)
168 // ... check compatibility of used messages
169 ch, err := conn.NewAPIChannel()
171 fmt.Println("creating channel failed: ", err)
173 if err := ch.CheckCompatiblity(vpe.AllMessages()...); err != nil {
174 fmt.Println("compatibility error: ", err)
176 if err := ch.CheckCompatiblity(interfaces.AllMessages()...); err != nil {
177 fmt.Println("compatibility error: ", err)
184 func (vpp *VppInstance) vppctl(command string, arguments ...any) string {
185 vppCliCommand := fmt.Sprintf(command, arguments...)
186 containerExecCommand := fmt.Sprintf("docker exec --detach=false %[1]s vppctl -s %[2]s %[3]s",
187 vpp.container.name, vpp.getCliSocket(), vppCliCommand)
188 vpp.getSuite().log(containerExecCommand)
189 output, err := exechelper.CombinedOutput(containerExecCommand)
190 vpp.getSuite().assertNil(err)
192 return string(output)
195 func (vpp *VppInstance) GetSessionStat(stat string) int {
196 o := vpp.vppctl("show session stats")
197 vpp.getSuite().log(o)
198 for _, line := range strings.Split(o, "\n") {
199 if strings.Contains(line, stat) {
200 tokens := strings.Split(strings.TrimSpace(line), " ")
201 val, err := strconv.Atoi(tokens[0])
203 vpp.getSuite().FailNow("failed to parse stat value %s", err)
212 func (vpp *VppInstance) waitForApp(appName string, timeout int) {
213 for i := 0; i < timeout; i++ {
214 o := vpp.vppctl("show app")
215 if strings.Contains(o, appName) {
218 time.Sleep(1 * time.Second)
220 vpp.getSuite().assertNil(1, "Timeout while waiting for app '%s'", appName)
223 func (vpp *VppInstance) createAfPacket(
225 ) (interface_types.InterfaceIndex, error) {
226 createReq := &af_packet.AfPacketCreateV2{
227 UseRandomHwAddr: true,
228 HostIfName: veth.Name(),
230 if veth.hwAddress != (MacAddress{}) {
231 createReq.UseRandomHwAddr = false
232 createReq.HwAddr = veth.hwAddress
234 createReply := &af_packet.AfPacketCreateV2Reply{}
236 if err := vpp.apiChannel.SendRequest(createReq).ReceiveReply(createReply); err != nil {
239 veth.index = createReply.SwIfIndex
242 upReq := &interfaces.SwInterfaceSetFlags{
243 SwIfIndex: veth.index,
244 Flags: interface_types.IF_STATUS_API_FLAG_ADMIN_UP,
246 upReply := &interfaces.SwInterfaceSetFlagsReply{}
248 if err := vpp.apiChannel.SendRequest(upReq).ReceiveReply(upReply); err != nil {
253 if veth.addressWithPrefix() == (AddressWithPrefix{}) {
255 var ip4Address string
256 if ip4Address, err = veth.ip4AddrAllocator.NewIp4InterfaceAddress(veth.peer.networkNumber); err == nil {
257 veth.ip4Address = ip4Address
262 addressReq := &interfaces.SwInterfaceAddDelAddress{
264 SwIfIndex: veth.index,
265 Prefix: veth.addressWithPrefix(),
267 addressReply := &interfaces.SwInterfaceAddDelAddressReply{}
269 if err := vpp.apiChannel.SendRequest(addressReq).ReceiveReply(addressReply); err != nil {
273 return veth.index, nil
276 func (vpp *VppInstance) addAppNamespace(
278 ifx interface_types.InterfaceIndex,
281 req := &session.AppNamespaceAddDelV2{
284 NamespaceID: namespaceId,
286 reply := &session.AppNamespaceAddDelV2Reply{}
288 if err := vpp.apiChannel.SendRequest(req).ReceiveReply(reply); err != nil {
292 sessionReq := &session.SessionEnableDisable{
295 sessionReply := &session.SessionEnableDisableReply{}
297 if err := vpp.apiChannel.SendRequest(sessionReq).ReceiveReply(sessionReply); err != nil {
304 func (vpp *VppInstance) createTap(
312 createTapReq := &tapv2.TapCreateV2{
315 HostIfName: tap.Name(),
316 HostIP4PrefixSet: true,
317 HostIP4Prefix: tap.ip4AddressWithPrefix(),
319 createTapReply := &tapv2.TapCreateV2Reply{}
321 // Create tap interface
322 if err := vpp.apiChannel.SendRequest(createTapReq).ReceiveReply(createTapReply); err != nil {
327 addAddressReq := &interfaces.SwInterfaceAddDelAddress{
329 SwIfIndex: createTapReply.SwIfIndex,
330 Prefix: tap.peer.addressWithPrefix(),
332 addAddressReply := &interfaces.SwInterfaceAddDelAddressReply{}
334 if err := vpp.apiChannel.SendRequest(addAddressReq).ReceiveReply(addAddressReply); err != nil {
338 // Set interface to up
339 upReq := &interfaces.SwInterfaceSetFlags{
340 SwIfIndex: createTapReply.SwIfIndex,
341 Flags: interface_types.IF_STATUS_API_FLAG_ADMIN_UP,
343 upReply := &interfaces.SwInterfaceSetFlagsReply{}
345 if err := vpp.apiChannel.SendRequest(upReq).ReceiveReply(upReply); err != nil {
352 func (vpp *VppInstance) saveLogs() {
353 logTarget := vpp.container.getLogDirPath() + "vppinstance-" + vpp.container.name + ".log"
354 logSource := vpp.container.getHostWorkDir() + defaultLogFilePath
355 cmd := exec.Command("cp", logSource, logTarget)
356 vpp.getSuite().T().Helper()
357 vpp.getSuite().log(cmd.String())
361 func (vpp *VppInstance) disconnect() {
362 vpp.connection.Disconnect()
363 vpp.apiChannel.Close()
366 func (vpp *VppInstance) generateCpuConfig() string {
369 if len(vpp.cpus) < 1 {
373 append(fmt.Sprintf("main-core %d", vpp.cpus[0]))
374 workers := vpp.cpus[1:]
376 if len(workers) > 0 {
377 for i := 0; i < len(workers); i++ {
381 s = s + fmt.Sprintf("%d", workers[i])
383 c.append(fmt.Sprintf("corelist-workers %s", s))
385 return c.close().toString()