1 files changed, 0 insertions, 752 deletions
diff --git a/test/packetimpact/testbench/dut.go b/test/packetimpact/testbench/dut.go
deleted file mode 100644
index 66a0255b8..000000000
--- a/test/packetimpact/testbench/dut.go
+++ /dev/null
@@ -1,752 +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 testbench
-
-import (
-	"context"
-	"encoding/binary"
-	"fmt"
-	"net"
-	"syscall"
-	"testing"
-	"time"
-
-	pb "gvisor.dev/gvisor/test/packetimpact/proto/posix_server_go_proto"
-
-	"golang.org/x/sys/unix"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/keepalive"
-)
-
-// DUT communicates with the DUT to force it to make POSIX calls.
-type DUT struct {
-	conn        *grpc.ClientConn
-	posixServer POSIXClient
-	Net         *DUTTestNet
-}
-
-// NewDUT creates a new connection with the DUT over gRPC.
-func NewDUT(t *testing.T) DUT {
-	t.Helper()
-	n := GetDUTTestNet()
-	dut := n.ConnectToDUT(t)
-	t.Cleanup(func() {
-		dut.TearDownConnection()
-		dut.Net.Release()
-	})
-	return dut
-}
-
-// ConnectToDUT connects to DUT through gRPC.
-func (n *DUTTestNet) ConnectToDUT(t *testing.T) DUT {
-	t.Helper()
-
-	posixServerAddress := net.JoinHostPort(n.POSIXServerIP.String(), fmt.Sprintf("%d", n.POSIXServerPort))
-	conn, err := grpc.Dial(posixServerAddress, grpc.WithInsecure(), grpc.WithKeepaliveParams(keepalive.ClientParameters{Timeout: RPCKeepalive}))
-	if err != nil {
-		t.Fatalf("failed to grpc.Dial(%s): %s", posixServerAddress, err)
-	}
-	posixServer := NewPOSIXClient(conn)
-	return DUT{
-		conn:        conn,
-		posixServer: posixServer,
-		Net:         n,
-	}
-}
-
-// TearDownConnection closes the underlying connection.
-func (dut *DUT) TearDownConnection() {
-	dut.conn.Close()
-}
-
-func (dut *DUT) sockaddrToProto(t *testing.T, sa unix.Sockaddr) *pb.Sockaddr {
-	t.Helper()
-
-	switch s := sa.(type) {
-	case *unix.SockaddrInet4:
-		return &pb.Sockaddr{
-			Sockaddr: &pb.Sockaddr_In{
-				In: &pb.SockaddrIn{
-					Family: unix.AF_INET,
-					Port:   uint32(s.Port),
-					Addr:   s.Addr[:],
-				},
-			},
-		}
-	case *unix.SockaddrInet6:
-		return &pb.Sockaddr{
-			Sockaddr: &pb.Sockaddr_In6{
-				In6: &pb.SockaddrIn6{
-					Family:   unix.AF_INET6,
-					Port:     uint32(s.Port),
-					Flowinfo: 0,
-					ScopeId:  s.ZoneId,
-					Addr:     s.Addr[:],
-				},
-			},
-		}
-	}
-	t.Fatalf("can't parse Sockaddr struct: %+v", sa)
-	return nil
-}
-
-func (dut *DUT) protoToSockaddr(t *testing.T, sa *pb.Sockaddr) unix.Sockaddr {
-	t.Helper()
-
-	switch s := sa.Sockaddr.(type) {
-	case *pb.Sockaddr_In:
-		ret := unix.SockaddrInet4{
-			Port: int(s.In.GetPort()),
-		}
-		copy(ret.Addr[:], s.In.GetAddr())
-		return &ret
-	case *pb.Sockaddr_In6:
-		ret := unix.SockaddrInet6{
-			Port:   int(s.In6.GetPort()),
-			ZoneId: s.In6.GetScopeId(),
-		}
-		copy(ret.Addr[:], s.In6.GetAddr())
-		return &ret
-	}
-	t.Fatalf("can't parse Sockaddr proto: %#v", sa)
-	return nil
-}
-
-// CreateBoundSocket makes a new socket on the DUT, with type typ and protocol
-// proto, and bound to the IP address addr. Returns the new file descriptor and
-// the port that was selected on the DUT.
-func (dut *DUT) CreateBoundSocket(t *testing.T, typ, proto int32, addr net.IP) (int32, uint16) {
-	t.Helper()
-
-	var fd int32
-	if addr.To4() != nil {
-		fd = dut.Socket(t, unix.AF_INET, typ, proto)
-		sa := unix.SockaddrInet4{}
-		copy(sa.Addr[:], addr.To4())
-		dut.Bind(t, fd, &sa)
-	} else if addr.To16() != nil {
-		fd = dut.Socket(t, unix.AF_INET6, typ, proto)
-		sa := unix.SockaddrInet6{}
-		copy(sa.Addr[:], addr.To16())
-		sa.ZoneId = dut.Net.RemoteDevID
-		dut.Bind(t, fd, &sa)
-	} else {
-		t.Fatalf("invalid IP address: %s", addr)
-	}
-	sa := dut.GetSockName(t, fd)
-	var port int
-	switch s := sa.(type) {
-	case *unix.SockaddrInet4:
-		port = s.Port
-	case *unix.SockaddrInet6:
-		port = s.Port
-	default:
-		t.Fatalf("unknown sockaddr type from getsockname: %T", sa)
-	}
-	return fd, uint16(port)
-}
-
-// CreateListener makes a new TCP connection. If it fails, the test ends.
-func (dut *DUT) CreateListener(t *testing.T, typ, proto, backlog int32) (int32, uint16) {
-	t.Helper()
-
-	fd, remotePort := dut.CreateBoundSocket(t, typ, proto, dut.Net.RemoteIPv4)
-	dut.Listen(t, fd, backlog)
-	return fd, remotePort
-}
-
-// All the functions that make gRPC calls to the POSIX service are below, sorted
-// alphabetically.
-
-// Accept calls accept on the DUT and causes a fatal test failure if it doesn't
-// succeed. If more control over the timeout or error handling is needed, use
-// AcceptWithErrno.
-func (dut *DUT) Accept(t *testing.T, sockfd int32) (int32, unix.Sockaddr) {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	fd, sa, err := dut.AcceptWithErrno(ctx, t, sockfd)
-	if fd < 0 {
-		t.Fatalf("failed to accept: %s", err)
-	}
-	return fd, sa
-}
-
-// AcceptWithErrno calls accept on the DUT.
-func (dut *DUT) AcceptWithErrno(ctx context.Context, t *testing.T, sockfd int32) (int32, unix.Sockaddr, error) {
-	t.Helper()
-
-	req := pb.AcceptRequest{
-		Sockfd: sockfd,
-	}
-	resp, err := dut.posixServer.Accept(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Accept: %s", err)
-	}
-	return resp.GetFd(), dut.protoToSockaddr(t, resp.GetAddr()), syscall.Errno(resp.GetErrno_())
-}
-
-// Bind calls bind on the DUT and causes a fatal test failure if it doesn't
-// succeed. If more control over the timeout or error handling is
-// needed, use BindWithErrno.
-func (dut *DUT) Bind(t *testing.T, fd int32, sa unix.Sockaddr) {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.BindWithErrno(ctx, t, fd, sa)
-	if ret != 0 {
-		t.Fatalf("failed to bind socket: %s", err)
-	}
-}
-
-// BindWithErrno calls bind on the DUT.
-func (dut *DUT) BindWithErrno(ctx context.Context, t *testing.T, fd int32, sa unix.Sockaddr) (int32, error) {
-	t.Helper()
-
-	req := pb.BindRequest{
-		Sockfd: fd,
-		Addr:   dut.sockaddrToProto(t, sa),
-	}
-	resp, err := dut.posixServer.Bind(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Bind: %s", err)
-	}
-	return resp.GetRet(), syscall.Errno(resp.GetErrno_())
-}
-
-// Close calls close on the DUT and causes a fatal test failure if it doesn't
-// succeed. If more control over the timeout or error handling is needed, use
-// CloseWithErrno.
-func (dut *DUT) Close(t *testing.T, fd int32) {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.CloseWithErrno(ctx, t, fd)
-	if ret != 0 {
-		t.Fatalf("failed to close: %s", err)
-	}
-}
-
-// CloseWithErrno calls close on the DUT.
-func (dut *DUT) CloseWithErrno(ctx context.Context, t *testing.T, fd int32) (int32, error) {
-	t.Helper()
-
-	req := pb.CloseRequest{
-		Fd: fd,
-	}
-	resp, err := dut.posixServer.Close(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Close: %s", err)
-	}
-	return resp.GetRet(), syscall.Errno(resp.GetErrno_())
-}
-
-// Connect calls connect on the DUT and causes a fatal test failure if it
-// doesn't succeed. If more control over the timeout or error handling is
-// needed, use ConnectWithErrno.
-func (dut *DUT) Connect(t *testing.T, fd int32, sa unix.Sockaddr) {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.ConnectWithErrno(ctx, t, fd, sa)
-	// Ignore 'operation in progress' error that can be returned when the socket
-	// is non-blocking.
-	if err != syscall.Errno(unix.EINPROGRESS) && ret != 0 {
-		t.Fatalf("failed to connect socket: %s", err)
-	}
-}
-
-// ConnectWithErrno calls bind on the DUT.
-func (dut *DUT) ConnectWithErrno(ctx context.Context, t *testing.T, fd int32, sa unix.Sockaddr) (int32, error) {
-	t.Helper()
-
-	req := pb.ConnectRequest{
-		Sockfd: fd,
-		Addr:   dut.sockaddrToProto(t, sa),
-	}
-	resp, err := dut.posixServer.Connect(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Connect: %s", err)
-	}
-	return resp.GetRet(), syscall.Errno(resp.GetErrno_())
-}
-
-// Fcntl calls fcntl on the DUT and causes a fatal test failure if it
-// doesn't succeed. If more control over the timeout or error handling is
-// needed, use FcntlWithErrno.
-func (dut *DUT) Fcntl(t *testing.T, fd, cmd, arg int32) int32 {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.FcntlWithErrno(ctx, t, fd, cmd, arg)
-	if ret == -1 {
-		t.Fatalf("failed to Fcntl: ret=%d, errno=%s", ret, err)
-	}
-	return ret
-}
-
-// FcntlWithErrno calls fcntl on the DUT.
-func (dut *DUT) FcntlWithErrno(ctx context.Context, t *testing.T, fd, cmd, arg int32) (int32, error) {
-	t.Helper()
-
-	req := pb.FcntlRequest{
-		Fd:  fd,
-		Cmd: cmd,
-		Arg: arg,
-	}
-	resp, err := dut.posixServer.Fcntl(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Fcntl: %s", err)
-	}
-	return resp.GetRet(), syscall.Errno(resp.GetErrno_())
-}
-
-// GetSockName calls getsockname on the DUT and causes a fatal test failure if
-// it doesn't succeed. If more control over the timeout or error handling is
-// needed, use GetSockNameWithErrno.
-func (dut *DUT) GetSockName(t *testing.T, sockfd int32) unix.Sockaddr {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, sa, err := dut.GetSockNameWithErrno(ctx, t, sockfd)
-	if ret != 0 {
-		t.Fatalf("failed to getsockname: %s", err)
-	}
-	return sa
-}
-
-// GetSockNameWithErrno calls getsockname on the DUT.
-func (dut *DUT) GetSockNameWithErrno(ctx context.Context, t *testing.T, sockfd int32) (int32, unix.Sockaddr, error) {
-	t.Helper()
-
-	req := pb.GetSockNameRequest{
-		Sockfd: sockfd,
-	}
-	resp, err := dut.posixServer.GetSockName(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Bind: %s", err)
-	}
-	return resp.GetRet(), dut.protoToSockaddr(t, resp.GetAddr()), syscall.Errno(resp.GetErrno_())
-}
-
-func (dut *DUT) getSockOpt(ctx context.Context, t *testing.T, sockfd, level, optname, optlen int32, typ pb.GetSockOptRequest_SockOptType) (int32, *pb.SockOptVal, error) {
-	t.Helper()
-
-	req := pb.GetSockOptRequest{
-		Sockfd:  sockfd,
-		Level:   level,
-		Optname: optname,
-		Optlen:  optlen,
-		Type:    typ,
-	}
-	resp, err := dut.posixServer.GetSockOpt(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call GetSockOpt: %s", err)
-	}
-	optval := resp.GetOptval()
-	if optval == nil {
-		t.Fatalf("GetSockOpt response does not contain a value")
-	}
-	return resp.GetRet(), optval, syscall.Errno(resp.GetErrno_())
-}
-
-// GetSockOpt calls getsockopt on the DUT and causes a fatal test failure if it
-// doesn't succeed. If more control over the timeout or error handling is
-// needed, use GetSockOptWithErrno. Because endianess and the width of values
-// might differ between the testbench and DUT architectures, prefer to use a
-// more specific GetSockOptXxx function.
-func (dut *DUT) GetSockOpt(t *testing.T, sockfd, level, optname, optlen int32) []byte {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, optval, err := dut.GetSockOptWithErrno(ctx, t, sockfd, level, optname, optlen)
-	if ret != 0 {
-		t.Fatalf("failed to GetSockOpt: %s", err)
-	}
-	return optval
-}
-
-// GetSockOptWithErrno calls getsockopt on the DUT. Because endianess and the
-// width of values might differ between the testbench and DUT architectures,
-// prefer to use a more specific GetSockOptXxxWithErrno function.
-func (dut *DUT) GetSockOptWithErrno(ctx context.Context, t *testing.T, sockfd, level, optname, optlen int32) (int32, []byte, error) {
-	t.Helper()
-
-	ret, optval, errno := dut.getSockOpt(ctx, t, sockfd, level, optname, optlen, pb.GetSockOptRequest_BYTES)
-	bytesval, ok := optval.Val.(*pb.SockOptVal_Bytesval)
-	if !ok {
-		t.Fatalf("GetSockOpt got value type: %T, want bytes", optval.Val)
-	}
-	return ret, bytesval.Bytesval, errno
-}
-
-// GetSockOptInt calls getsockopt on the DUT and causes a fatal test failure
-// if it doesn't succeed. If more control over the int optval or error handling
-// is needed, use GetSockOptIntWithErrno.
-func (dut *DUT) GetSockOptInt(t *testing.T, sockfd, level, optname int32) int32 {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, intval, err := dut.GetSockOptIntWithErrno(ctx, t, sockfd, level, optname)
-	if ret != 0 {
-		t.Fatalf("failed to GetSockOptInt: %s", err)
-	}
-	return intval
-}
-
-// GetSockOptIntWithErrno calls getsockopt with an integer optval.
-func (dut *DUT) GetSockOptIntWithErrno(ctx context.Context, t *testing.T, sockfd, level, optname int32) (int32, int32, error) {
-	t.Helper()
-
-	ret, optval, errno := dut.getSockOpt(ctx, t, sockfd, level, optname, 0, pb.GetSockOptRequest_INT)
-	intval, ok := optval.Val.(*pb.SockOptVal_Intval)
-	if !ok {
-		t.Fatalf("GetSockOpt got value type: %T, want int", optval.Val)
-	}
-	return ret, intval.Intval, errno
-}
-
-// GetSockOptTimeval calls getsockopt on the DUT and causes a fatal test failure
-// if it doesn't succeed. If more control over the timeout or error handling is
-// needed, use GetSockOptTimevalWithErrno.
-func (dut *DUT) GetSockOptTimeval(t *testing.T, sockfd, level, optname int32) unix.Timeval {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, timeval, err := dut.GetSockOptTimevalWithErrno(ctx, t, sockfd, level, optname)
-	if ret != 0 {
-		t.Fatalf("failed to GetSockOptTimeval: %s", err)
-	}
-	return timeval
-}
-
-// GetSockOptTimevalWithErrno calls getsockopt and returns a timeval.
-func (dut *DUT) GetSockOptTimevalWithErrno(ctx context.Context, t *testing.T, sockfd, level, optname int32) (int32, unix.Timeval, error) {
-	t.Helper()
-
-	ret, optval, errno := dut.getSockOpt(ctx, t, sockfd, level, optname, 0, pb.GetSockOptRequest_TIME)
-	tv, ok := optval.Val.(*pb.SockOptVal_Timeval)
-	if !ok {
-		t.Fatalf("GetSockOpt got value type: %T, want timeval", optval.Val)
-	}
-	timeval := unix.Timeval{
-		Sec:  tv.Timeval.Seconds,
-		Usec: tv.Timeval.Microseconds,
-	}
-	return ret, timeval, errno
-}
-
-// Listen calls listen on the DUT and causes a fatal test failure if it doesn't
-// succeed. If more control over the timeout or error handling is needed, use
-// ListenWithErrno.
-func (dut *DUT) Listen(t *testing.T, sockfd, backlog int32) {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.ListenWithErrno(ctx, t, sockfd, backlog)
-	if ret != 0 {
-		t.Fatalf("failed to listen: %s", err)
-	}
-}
-
-// ListenWithErrno calls listen on the DUT.
-func (dut *DUT) ListenWithErrno(ctx context.Context, t *testing.T, sockfd, backlog int32) (int32, error) {
-	t.Helper()
-
-	req := pb.ListenRequest{
-		Sockfd:  sockfd,
-		Backlog: backlog,
-	}
-	resp, err := dut.posixServer.Listen(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Listen: %s", err)
-	}
-	return resp.GetRet(), syscall.Errno(resp.GetErrno_())
-}
-
-// Send calls send on the DUT and causes a fatal test failure if it doesn't
-// succeed. If more control over the timeout or error handling is needed, use
-// SendWithErrno.
-func (dut *DUT) Send(t *testing.T, sockfd int32, buf []byte, flags int32) int32 {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.SendWithErrno(ctx, t, sockfd, buf, flags)
-	if ret == -1 {
-		t.Fatalf("failed to send: %s", err)
-	}
-	return ret
-}
-
-// SendWithErrno calls send on the DUT.
-func (dut *DUT) SendWithErrno(ctx context.Context, t *testing.T, sockfd int32, buf []byte, flags int32) (int32, error) {
-	t.Helper()
-
-	req := pb.SendRequest{
-		Sockfd: sockfd,
-		Buf:    buf,
-		Flags:  flags,
-	}
-	resp, err := dut.posixServer.Send(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Send: %s", err)
-	}
-	return resp.GetRet(), syscall.Errno(resp.GetErrno_())
-}
-
-// SendTo calls sendto on the DUT and causes a fatal test failure if it doesn't
-// succeed. If more control over the timeout or error handling is needed, use
-// SendToWithErrno.
-func (dut *DUT) SendTo(t *testing.T, sockfd int32, buf []byte, flags int32, destAddr unix.Sockaddr) int32 {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.SendToWithErrno(ctx, t, sockfd, buf, flags, destAddr)
-	if ret == -1 {
-		t.Fatalf("failed to sendto: %s", err)
-	}
-	return ret
-}
-
-// SendToWithErrno calls sendto on the DUT.
-func (dut *DUT) SendToWithErrno(ctx context.Context, t *testing.T, sockfd int32, buf []byte, flags int32, destAddr unix.Sockaddr) (int32, error) {
-	t.Helper()
-
-	req := pb.SendToRequest{
-		Sockfd:   sockfd,
-		Buf:      buf,
-		Flags:    flags,
-		DestAddr: dut.sockaddrToProto(t, destAddr),
-	}
-	resp, err := dut.posixServer.SendTo(ctx, &req)
-	if err != nil {
-		t.Fatalf("faled to call SendTo: %s", err)
-	}
-	return resp.GetRet(), syscall.Errno(resp.GetErrno_())
-}
-
-// SetNonBlocking will set O_NONBLOCK flag for fd if nonblocking
-// is true, otherwise it will clear the flag.
-func (dut *DUT) SetNonBlocking(t *testing.T, fd int32, nonblocking bool) {
-	t.Helper()
-
-	flags := dut.Fcntl(t, fd, unix.F_GETFL, 0)
-	if nonblocking {
-		flags |= unix.O_NONBLOCK
-	} else {
-		flags &= ^unix.O_NONBLOCK
-	}
-	dut.Fcntl(t, fd, unix.F_SETFL, flags)
-}
-
-func (dut *DUT) setSockOpt(ctx context.Context, t *testing.T, sockfd, level, optname int32, optval *pb.SockOptVal) (int32, error) {
-	t.Helper()
-
-	req := pb.SetSockOptRequest{
-		Sockfd:  sockfd,
-		Level:   level,
-		Optname: optname,
-		Optval:  optval,
-	}
-	resp, err := dut.posixServer.SetSockOpt(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call SetSockOpt: %s", err)
-	}
-	return resp.GetRet(), syscall.Errno(resp.GetErrno_())
-}
-
-// SetSockOpt calls setsockopt on the DUT and causes a fatal test failure if it
-// doesn't succeed. If more control over the timeout or error handling is
-// needed, use SetSockOptWithErrno. Because endianess and the width of values
-// might differ between the testbench and DUT architectures, prefer to use a
-// more specific SetSockOptXxx function.
-func (dut *DUT) SetSockOpt(t *testing.T, sockfd, level, optname int32, optval []byte) {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.SetSockOptWithErrno(ctx, t, sockfd, level, optname, optval)
-	if ret != 0 {
-		t.Fatalf("failed to SetSockOpt: %s", err)
-	}
-}
-
-// SetSockOptWithErrno calls setsockopt on the DUT. Because endianess and the
-// width of values might differ between the testbench and DUT architectures,
-// prefer to use a more specific SetSockOptXxxWithErrno function.
-func (dut *DUT) SetSockOptWithErrno(ctx context.Context, t *testing.T, sockfd, level, optname int32, optval []byte) (int32, error) {
-	t.Helper()
-
-	return dut.setSockOpt(ctx, t, sockfd, level, optname, &pb.SockOptVal{Val: &pb.SockOptVal_Bytesval{optval}})
-}
-
-// SetSockOptInt calls setsockopt on the DUT and causes a fatal test failure
-// if it doesn't succeed. If more control over the int optval or error handling
-// is needed, use SetSockOptIntWithErrno.
-func (dut *DUT) SetSockOptInt(t *testing.T, sockfd, level, optname, optval int32) {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.SetSockOptIntWithErrno(ctx, t, sockfd, level, optname, optval)
-	if ret != 0 {
-		t.Fatalf("failed to SetSockOptInt: %s", err)
-	}
-}
-
-// SetSockOptIntWithErrno calls setsockopt with an integer optval.
-func (dut *DUT) SetSockOptIntWithErrno(ctx context.Context, t *testing.T, sockfd, level, optname, optval int32) (int32, error) {
-	t.Helper()
-
-	return dut.setSockOpt(ctx, t, sockfd, level, optname, &pb.SockOptVal{Val: &pb.SockOptVal_Intval{optval}})
-}
-
-// SetSockOptTimeval calls setsockopt on the DUT and causes a fatal test failure
-// if it doesn't succeed. If more control over the timeout or error handling is
-// needed, use SetSockOptTimevalWithErrno.
-func (dut *DUT) SetSockOptTimeval(t *testing.T, sockfd, level, optname int32, tv *unix.Timeval) {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, err := dut.SetSockOptTimevalWithErrno(ctx, t, sockfd, level, optname, tv)
-	if ret != 0 {
-		t.Fatalf("failed to SetSockOptTimeval: %s", err)
-	}
-}
-
-// SetSockOptTimevalWithErrno calls setsockopt with the timeval converted to
-// bytes.
-func (dut *DUT) SetSockOptTimevalWithErrno(ctx context.Context, t *testing.T, sockfd, level, optname int32, tv *unix.Timeval) (int32, error) {
-	t.Helper()
-
-	timeval := pb.Timeval{
-		Seconds:      int64(tv.Sec),
-		Microseconds: int64(tv.Usec),
-	}
-	return dut.setSockOpt(ctx, t, sockfd, level, optname, &pb.SockOptVal{Val: &pb.SockOptVal_Timeval{&timeval}})
-}
-
-// Socket calls socket on the DUT and returns the file descriptor. If socket
-// fails on the DUT, the test ends.
-func (dut *DUT) Socket(t *testing.T, domain, typ, proto int32) int32 {
-	t.Helper()
-
-	fd, err := dut.SocketWithErrno(t, domain, typ, proto)
-	if fd < 0 {
-		t.Fatalf("failed to create socket: %s", err)
-	}
-	return fd
-}
-
-// SocketWithErrno calls socket on the DUT and returns the fd and errno.
-func (dut *DUT) SocketWithErrno(t *testing.T, domain, typ, proto int32) (int32, error) {
-	t.Helper()
-
-	req := pb.SocketRequest{
-		Domain:   domain,
-		Type:     typ,
-		Protocol: proto,
-	}
-	ctx := context.Background()
-	resp, err := dut.posixServer.Socket(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Socket: %s", err)
-	}
-	return resp.GetFd(), syscall.Errno(resp.GetErrno_())
-}
-
-// Recv calls recv on the DUT and causes a fatal test failure if it doesn't
-// succeed. If more control over the timeout or error handling is needed, use
-// RecvWithErrno.
-func (dut *DUT) Recv(t *testing.T, sockfd, len, flags int32) []byte {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	ret, buf, err := dut.RecvWithErrno(ctx, t, sockfd, len, flags)
-	if ret == -1 {
-		t.Fatalf("failed to recv: %s", err)
-	}
-	return buf
-}
-
-// RecvWithErrno calls recv on the DUT.
-func (dut *DUT) RecvWithErrno(ctx context.Context, t *testing.T, sockfd, len, flags int32) (int32, []byte, error) {
-	t.Helper()
-
-	req := pb.RecvRequest{
-		Sockfd: sockfd,
-		Len:    len,
-		Flags:  flags,
-	}
-	resp, err := dut.posixServer.Recv(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Recv: %s", err)
-	}
-	return resp.GetRet(), resp.GetBuf(), syscall.Errno(resp.GetErrno_())
-}
-
-// SetSockLingerOption sets SO_LINGER socket option on the DUT.
-func (dut *DUT) SetSockLingerOption(t *testing.T, sockfd int32, timeout time.Duration, enable bool) {
-	var linger unix.Linger
-	if enable {
-		linger.Onoff = 1
-	}
-	linger.Linger = int32(timeout / time.Second)
-
-	buf := make([]byte, 8)
-	binary.LittleEndian.PutUint32(buf, uint32(linger.Onoff))
-	binary.LittleEndian.PutUint32(buf[4:], uint32(linger.Linger))
-	dut.SetSockOpt(t, sockfd, unix.SOL_SOCKET, unix.SO_LINGER, buf)
-}
-
-// Shutdown calls shutdown on the DUT and causes a fatal test failure if it
-// doesn't succeed. If more control over the timeout or error handling is
-// needed, use ShutdownWithErrno.
-func (dut *DUT) Shutdown(t *testing.T, fd, how int32) error {
-	t.Helper()
-
-	ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
-	defer cancel()
-	return dut.ShutdownWithErrno(ctx, t, fd, how)
-}
-
-// ShutdownWithErrno calls shutdown on the DUT.
-func (dut *DUT) ShutdownWithErrno(ctx context.Context, t *testing.T, fd, how int32) error {
-	t.Helper()
-
-	req := pb.ShutdownRequest{
-		Fd:  fd,
-		How: how,
-	}
-	resp, err := dut.posixServer.Shutdown(ctx, &req)
-	if err != nil {
-		t.Fatalf("failed to call Shutdown: %s", err)
-	}
-	return syscall.Errno(resp.GetErrno_())
-}