1 files changed, 0 insertions, 437 deletions
diff --git a/test/packetimpact/runner/dut.go b/test/packetimpact/runner/dut.go
deleted file mode 100644
index d4c486f9c..000000000
--- a/test/packetimpact/runner/dut.go
+++ /dev/null
@@ -1,437 +0,0 @@
-// Copyright 2020 The gVisor Authors.
-//
-// 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.
-
-// Package runner starts docker containers and networking for a packetimpact test.
-package runner
-
-import (
-	"context"
-	"flag"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"math/rand"
-	"net"
-	"os"
-	"os/exec"
-	"path"
-	"path/filepath"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/docker/docker/api/types/mount"
-	"gvisor.dev/gvisor/pkg/test/dockerutil"
-	"gvisor.dev/gvisor/test/packetimpact/netdevs"
-)
-
-// stringList implements flag.Value.
-type stringList []string
-
-// String implements flag.Value.String.
-func (l *stringList) String() string {
-	return strings.Join(*l, ",")
-}
-
-// Set implements flag.Value.Set.
-func (l *stringList) Set(value string) error {
-	*l = append(*l, value)
-	return nil
-}
-
-var (
-	native          = false
-	testbenchBinary = ""
-	tshark          = false
-	extraTestArgs   = stringList{}
-	expectFailure   = false
-
-	// DutAddr is the IP addres for DUT.
-	DutAddr       = net.IPv4(0, 0, 0, 10)
-	testbenchAddr = net.IPv4(0, 0, 0, 20)
-)
-
-// RegisterFlags defines flags and associates them with the package-level
-// exported variables above. It should be called by tests in their init
-// functions.
-func RegisterFlags(fs *flag.FlagSet) {
-	fs.BoolVar(&native, "native", false, "whether the test should be run natively")
-	fs.StringVar(&testbenchBinary, "testbench_binary", "", "path to the testbench binary")
-	fs.BoolVar(&tshark, "tshark", false, "use more verbose tshark in logs instead of tcpdump")
-	flag.Var(&extraTestArgs, "extra_test_arg", "extra arguments to pass to the testbench")
-	flag.BoolVar(&expectFailure, "expect_failure", false, "expect that the test will fail when run")
-}
-
-// CtrlPort is the port that posix_server listens on.
-const CtrlPort = "40000"
-
-// logger implements testutil.Logger.
-//
-// Labels logs based on their source and formats multi-line logs.
-type logger string
-
-// Name implements testutil.Logger.Name.
-func (l logger) Name() string {
-	return string(l)
-}
-
-// Logf implements testutil.Logger.Logf.
-func (l logger) Logf(format string, args ...interface{}) {
-	lines := strings.Split(fmt.Sprintf(format, args...), "\n")
-	log.Printf("%s: %s", l, lines[0])
-	for _, line := range lines[1:] {
-		log.Printf("%*s  %s", len(l), "", line)
-	}
-}
-
-// TestWithDUT runs a packetimpact test with the given information.
-func TestWithDUT(ctx context.Context, t *testing.T, mkDevice func(*dockerutil.Container) DUT, containerAddr net.IP) {
-	if testbenchBinary == "" {
-		t.Fatal("--testbench_binary is missing")
-	}
-	dockerutil.EnsureSupportedDockerVersion()
-
-	// Create the networks needed for the test. One control network is needed for
-	// the gRPC control packets and one test network on which to transmit the test
-	// packets.
-	ctrlNet := dockerutil.NewNetwork(ctx, logger("ctrlNet"))
-	testNet := dockerutil.NewNetwork(ctx, logger("testNet"))
-	for _, dn := range []*dockerutil.Network{ctrlNet, testNet} {
-		for {
-			if err := createDockerNetwork(ctx, dn); err != nil {
-				t.Log("creating docker network:", err)
-				const wait = 100 * time.Millisecond
-				t.Logf("sleeping %s and will try creating docker network again", wait)
-				// This can fail if another docker network claimed the same IP so we'll
-				// just try again.
-				time.Sleep(wait)
-				continue
-			}
-			break
-		}
-		dn := dn
-		t.Cleanup(func() {
-			if err := dn.Cleanup(ctx); err != nil {
-				t.Errorf("unable to cleanup container %s: %s", dn.Name, err)
-			}
-		})
-		// Sanity check.
-		if inspect, err := dn.Inspect(ctx); err != nil {
-			t.Fatalf("failed to inspect network %s: %v", dn.Name, err)
-		} else if inspect.Name != dn.Name {
-			t.Fatalf("name mismatch for network want: %s got: %s", dn.Name, inspect.Name)
-		}
-	}
-
-	tmpDir, err := ioutil.TempDir("", "container-output")
-	if err != nil {
-		t.Fatal("creating temp dir:", err)
-	}
-	t.Cleanup(func() {
-		if err := exec.Command("/bin/cp", "-r", tmpDir, os.Getenv("TEST_UNDECLARED_OUTPUTS_DIR")).Run(); err != nil {
-			t.Errorf("unable to copy container output files: %s", err)
-		}
-		if err := os.RemoveAll(tmpDir); err != nil {
-			t.Errorf("failed to remove tmpDir %s: %s", tmpDir, err)
-		}
-	})
-
-	const testOutputDir = "/tmp/testoutput"
-
-	// Create the Docker container for the DUT.
-	var dut *dockerutil.Container
-	if native {
-		dut = dockerutil.MakeNativeContainer(ctx, logger("dut"))
-	} else {
-		dut = dockerutil.MakeContainer(ctx, logger("dut"))
-	}
-	t.Cleanup(func() {
-		dut.CleanUp(ctx)
-	})
-
-	runOpts := dockerutil.RunOpts{
-		Image:  "packetimpact",
-		CapAdd: []string{"NET_ADMIN"},
-		Mounts: []mount.Mount{{
-			Type:     mount.TypeBind,
-			Source:   tmpDir,
-			Target:   testOutputDir,
-			ReadOnly: false,
-		}},
-	}
-
-	device := mkDevice(dut)
-	remoteIPv6, remoteMAC, dutDeviceID, testNetDev := device.Prepare(ctx, t, runOpts, ctrlNet, testNet, containerAddr)
-
-	// Create the Docker container for the testbench.
-	testbench := dockerutil.MakeNativeContainer(ctx, logger("testbench"))
-
-	tbb := path.Base(testbenchBinary)
-	containerTestbenchBinary := filepath.Join("/packetimpact", tbb)
-	testbench.CopyFiles(&runOpts, "/packetimpact", filepath.Join("test/packetimpact/tests", tbb))
-
-	// Run tcpdump in the test bench unbuffered, without DNS resolution, just on
-	// the interface with the test packets.
-	snifferArgs := []string{
-		"tcpdump",
-		"-S", "-vvv", "-U", "-n",
-		"-i", testNetDev,
-		"-w", testOutputDir + "/dump.pcap",
-	}
-	snifferRegex := "tcpdump: listening.*\n"
-	if tshark {
-		// Run tshark in the test bench unbuffered, without DNS resolution, just on
-		// the interface with the test packets.
-		snifferArgs = []string{
-			"tshark", "-V", "-l", "-n", "-i", testNetDev,
-			"-o", "tcp.check_checksum:TRUE",
-			"-o", "udp.check_checksum:TRUE",
-		}
-		snifferRegex = "Capturing on.*\n"
-	}
-
-	if err := StartContainer(
-		ctx,
-		runOpts,
-		testbench,
-		testbenchAddr,
-		[]*dockerutil.Network{ctrlNet, testNet},
-		snifferArgs...,
-	); err != nil {
-		t.Fatalf("failed to start docker container for testbench sniffer: %s", err)
-	}
-	// Kill so that it will flush output.
-	t.Cleanup(func() {
-		time.Sleep(1 * time.Second)
-		testbench.Exec(ctx, dockerutil.ExecOpts{}, "killall", snifferArgs[0])
-	})
-
-	if _, err := testbench.WaitForOutput(ctx, snifferRegex, 60*time.Second); err != nil {
-		t.Fatalf("sniffer on %s never listened: %s", dut.Name, err)
-	}
-
-	// When the Linux kernel receives a SYN-ACK for a SYN it didn't send, it
-	// will respond with an RST. In most packetimpact tests, the SYN is sent
-	// by the raw socket and the kernel knows nothing about the connection, this
-	// behavior will break lots of TCP related packetimpact tests. To prevent
-	// this, we can install the following iptables rules. The raw socket that
-	// packetimpact tests use will still be able to see everything.
-	for _, bin := range []string{"iptables", "ip6tables"} {
-		if logs, err := testbench.Exec(ctx, dockerutil.ExecOpts{}, bin, "-A", "INPUT", "-i", testNetDev, "-p", "tcp", "-j", "DROP"); err != nil {
-			t.Fatalf("unable to Exec %s on container %s: %s, logs from testbench:\n%s", bin, testbench.Name, err, logs)
-		}
-	}
-
-	// FIXME(b/156449515): Some piece of the system has a race. The old
-	// bash script version had a sleep, so we have one too. The race should
-	// be fixed and this sleep removed.
-	time.Sleep(time.Second)
-
-	// Start a packetimpact test on the test bench. The packetimpact test sends
-	// and receives packets and also sends POSIX socket commands to the
-	// posix_server to be executed on the DUT.
-	testArgs := []string{containerTestbenchBinary}
-	testArgs = append(testArgs, extraTestArgs...)
-	testArgs = append(testArgs,
-		"--posix_server_ip", AddressInSubnet(DutAddr, *ctrlNet.Subnet).String(),
-		"--posix_server_port", CtrlPort,
-		"--remote_ipv4", AddressInSubnet(DutAddr, *testNet.Subnet).String(),
-		"--local_ipv4", AddressInSubnet(testbenchAddr, *testNet.Subnet).String(),
-		"--remote_ipv6", remoteIPv6.String(),
-		"--remote_mac", remoteMAC.String(),
-		"--remote_interface_id", fmt.Sprintf("%d", dutDeviceID),
-		"--device", testNetDev,
-		fmt.Sprintf("--native=%t", native),
-	)
-	testbenchLogs, err := testbench.Exec(ctx, dockerutil.ExecOpts{}, testArgs...)
-	if (err != nil) != expectFailure {
-		var dutLogs string
-		if logs, err := device.Logs(ctx); err != nil {
-			dutLogs = fmt.Sprintf("failed to fetch DUT logs: %s", err)
-		} else {
-			dutLogs = logs
-		}
-
-		t.Errorf(`test error: %v, expect failure: %t
-
-%s
-
-====== Begin of Testbench Logs ======
-
-%s
-
-====== End of Testbench Logs ======`,
-			err, expectFailure, dutLogs, testbenchLogs)
-	}
-}
-
-// DUT describes how to setup/teardown the dut for packetimpact tests.
-type DUT interface {
-	// Prepare prepares the dut, starts posix_server and returns the IPv6, MAC
-	// address, the interface ID, and the interface name for the testNet on DUT.
-	Prepare(ctx context.Context, t *testing.T, runOpts dockerutil.RunOpts, ctrlNet, testNet *dockerutil.Network, containerAddr net.IP) (net.IP, net.HardwareAddr, uint32, string)
-	// Logs retrieves the logs from the dut.
-	Logs(ctx context.Context) (string, error)
-}
-
-// DockerDUT describes a docker based DUT.
-type DockerDUT struct {
-	c *dockerutil.Container
-}
-
-// NewDockerDUT creates a docker based DUT.
-func NewDockerDUT(c *dockerutil.Container) DUT {
-	return &DockerDUT{
-		c: c,
-	}
-}
-
-// Prepare implements DUT.Prepare.
-func (dut *DockerDUT) Prepare(ctx context.Context, t *testing.T, runOpts dockerutil.RunOpts, ctrlNet, testNet *dockerutil.Network, containerAddr net.IP) (net.IP, net.HardwareAddr, uint32, string) {
-	const containerPosixServerBinary = "/packetimpact/posix_server"
-	dut.c.CopyFiles(&runOpts, "/packetimpact", "test/packetimpact/dut/posix_server")
-
-	if err := StartContainer(
-		ctx,
-		runOpts,
-		dut.c,
-		containerAddr,
-		[]*dockerutil.Network{ctrlNet, testNet},
-		containerPosixServerBinary,
-		"--ip=0.0.0.0",
-		"--port="+CtrlPort,
-	); err != nil {
-		t.Fatalf("failed to start docker container for DUT: %s", err)
-	}
-
-	if _, err := dut.c.WaitForOutput(ctx, "Server listening.*\n", 60*time.Second); err != nil {
-		t.Fatalf("%s on container %s never listened: %s", containerPosixServerBinary, dut.c.Name, err)
-	}
-
-	dutTestDevice, dutDeviceInfo, err := deviceByIP(ctx, dut.c, AddressInSubnet(containerAddr, *testNet.Subnet))
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	remoteMAC := dutDeviceInfo.MAC
-	remoteIPv6 := dutDeviceInfo.IPv6Addr
-	// Netstack as DUT doesn't assign IPv6 addresses automatically so do it if
-	// needed.
-	if remoteIPv6 == nil {
-		if _, err := dut.c.Exec(ctx, dockerutil.ExecOpts{}, "ip", "addr", "add", netdevs.MACToIP(remoteMAC).String(), "scope", "link", "dev", dutTestDevice); err != nil {
-			t.Fatalf("unable to ip addr add on container %s: %s", dut.c.Name, err)
-		}
-		// Now try again, to make sure that it worked.
-		_, dutDeviceInfo, err = deviceByIP(ctx, dut.c, AddressInSubnet(containerAddr, *testNet.Subnet))
-		if err != nil {
-			t.Fatal(err)
-		}
-		remoteIPv6 = dutDeviceInfo.IPv6Addr
-		if remoteIPv6 == nil {
-			t.Fatalf("unable to set IPv6 address on container %s", dut.c.Name)
-		}
-	}
-	const testNetDev = "eth2"
-
-	return remoteIPv6, dutDeviceInfo.MAC, dutDeviceInfo.ID, testNetDev
-}
-
-// Logs implements DUT.Logs.
-func (dut *DockerDUT) Logs(ctx context.Context) (string, error) {
-	logs, err := dut.c.Logs(ctx)
-	if err != nil {
-		return "", err
-	}
-	return fmt.Sprintf(`====== Begin of DUT Logs ======
-
-%s
-
-====== End of DUT Logs ======`, logs), nil
-}
-
-// AddNetworks connects docker network with the container and assigns the specific IP.
-func AddNetworks(ctx context.Context, d *dockerutil.Container, addr net.IP, networks []*dockerutil.Network) error {
-	for _, dn := range networks {
-		ip := AddressInSubnet(addr, *dn.Subnet)
-		// Connect to the network with the specified IP address.
-		if err := dn.Connect(ctx, d, ip.String(), ""); err != nil {
-			return fmt.Errorf("unable to connect container %s to network %s: %w", d.Name, dn.Name, err)
-		}
-	}
-	return nil
-}
-
-// AddressInSubnet combines the subnet provided with the address and returns a
-// new address. The return address bits come from the subnet where the mask is 1
-// and from the ip address where the mask is 0.
-func AddressInSubnet(addr net.IP, subnet net.IPNet) net.IP {
-	var octets []byte
-	for i := 0; i < 4; i++ {
-		octets = append(octets, (subnet.IP.To4()[i]&subnet.Mask[i])+(addr.To4()[i]&(^subnet.Mask[i])))
-	}
-	return net.IP(octets)
-}
-
-// deviceByIP finds a deviceInfo and device name from an IP address.
-func deviceByIP(ctx context.Context, d *dockerutil.Container, ip net.IP) (string, netdevs.DeviceInfo, error) {
-	out, err := d.Exec(ctx, dockerutil.ExecOpts{}, "ip", "addr", "show")
-	if err != nil {
-		return "", netdevs.DeviceInfo{}, fmt.Errorf("listing devices on %s container: %w\n%s", d.Name, err, out)
-	}
-	devs, err := netdevs.ParseDevices(out)
-	if err != nil {
-		return "", netdevs.DeviceInfo{}, fmt.Errorf("parsing devices from %s container: %w\n%s", d.Name, err, out)
-	}
-	testDevice, deviceInfo, err := netdevs.FindDeviceByIP(ip, devs)
-	if err != nil {
-		return "", netdevs.DeviceInfo{}, fmt.Errorf("can't find deviceInfo for container %s: %w", d.Name, err)
-	}
-	return testDevice, deviceInfo, nil
-}
-
-// createDockerNetwork makes a randomly-named network that will start with the
-// namePrefix. The network will be a random /24 subnet.
-func createDockerNetwork(ctx context.Context, n *dockerutil.Network) error {
-	randSource := rand.NewSource(time.Now().UnixNano())
-	r1 := rand.New(randSource)
-	// Class C, 192.0.0.0 to 223.255.255.255, transitionally has mask 24.
-	ip := net.IPv4(byte(r1.Intn(224-192)+192), byte(r1.Intn(256)), byte(r1.Intn(256)), 0)
-	n.Subnet = &net.IPNet{
-		IP:   ip,
-		Mask: ip.DefaultMask(),
-	}
-	return n.Create(ctx)
-}
-
-// StartContainer will create a container instance from runOpts, connect it
-// with the specified docker networks and start executing the specified cmd.
-func StartContainer(ctx context.Context, runOpts dockerutil.RunOpts, c *dockerutil.Container, containerAddr net.IP, ns []*dockerutil.Network, cmd ...string) error {
-	conf, hostconf, netconf := c.ConfigsFrom(runOpts, cmd...)
-	_ = netconf
-	hostconf.AutoRemove = true
-	hostconf.Sysctls = map[string]string{"net.ipv6.conf.all.disable_ipv6": "0"}
-
-	if err := c.CreateFrom(ctx, conf, hostconf, nil); err != nil {
-		return fmt.Errorf("unable to create container %s: %w", c.Name, err)
-	}
-
-	if err := AddNetworks(ctx, c, containerAddr, ns); err != nil {
-		return fmt.Errorf("unable to connect the container with the networks: %w", err)
-	}
-
-	if err := c.Start(ctx); err != nil {
-		return fmt.Errorf("unable to start container %s: %w", c.Name, err)
-	}
-	return nil
-}