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-rw-r--r--test/packetimpact/dut/posix_server.cc3
-rw-r--r--test/packetimpact/proto/posix_server.proto3
-rw-r--r--test/packetimpact/runner/defs.bzl15
-rw-r--r--test/packetimpact/testbench/connections.go21
-rw-r--r--test/packetimpact/testbench/dut.go14
-rw-r--r--test/packetimpact/tests/BUILD32
-rw-r--r--test/packetimpact/tests/tcp_fin_retransmission_test.go87
-rw-r--r--test/packetimpact/tests/tcp_outside_the_window_closing_test.go86
-rw-r--r--test/packetimpact/tests/tcp_outside_the_window_test.go2
-rw-r--r--test/packetimpact/tests/tcp_unacc_seq_ack_closing_test.go94
-rw-r--r--test/packetimpact/tests/tcp_unacc_seq_ack_test.go55
11 files changed, 368 insertions, 44 deletions
diff --git a/test/packetimpact/dut/posix_server.cc b/test/packetimpact/dut/posix_server.cc
index 0d93b806e..ea83bbe72 100644
--- a/test/packetimpact/dut/posix_server.cc
+++ b/test/packetimpact/dut/posix_server.cc
@@ -395,7 +395,8 @@ class PosixImpl final : public posix_server::Posix::Service {
::grpc::Status Shutdown(grpc::ServerContext *context,
const ::posix_server::ShutdownRequest *request,
::posix_server::ShutdownResponse *response) override {
- if (shutdown(request->fd(), request->how()) < 0) {
+ response->set_ret(shutdown(request->fd(), request->how()));
+ if (response->ret() < 0) {
response->set_errno_(errno);
}
return ::grpc::Status::OK;
diff --git a/test/packetimpact/proto/posix_server.proto b/test/packetimpact/proto/posix_server.proto
index 521f03465..175a65336 100644
--- a/test/packetimpact/proto/posix_server.proto
+++ b/test/packetimpact/proto/posix_server.proto
@@ -214,7 +214,8 @@ message ShutdownRequest {
}
message ShutdownResponse {
- int32 errno_ = 1; // "errno" may fail to compile in c++.
+ int32 ret = 1;
+ int32 errno_ = 2; // "errno" may fail to compile in c++.
}
message RecvRequest {
diff --git a/test/packetimpact/runner/defs.bzl b/test/packetimpact/runner/defs.bzl
index 8ce5edf2b..567f64c41 100644
--- a/test/packetimpact/runner/defs.bzl
+++ b/test/packetimpact/runner/defs.bzl
@@ -203,6 +203,11 @@ ALL_TESTS = [
name = "tcp_outside_the_window",
),
PacketimpactTestInfo(
+ name = "tcp_outside_the_window_closing",
+ # TODO(b/181625316): Fix netstack then merge into tcp_outside_the_window.
+ expect_netstack_failure = True,
+ ),
+ PacketimpactTestInfo(
name = "tcp_noaccept_close_rst",
),
PacketimpactTestInfo(
@@ -212,6 +217,11 @@ ALL_TESTS = [
name = "tcp_unacc_seq_ack",
),
PacketimpactTestInfo(
+ name = "tcp_unacc_seq_ack_closing",
+ # TODO(b/181625316): Fix netstack then merge into tcp_unacc_seq_ack.
+ expect_netstack_failure = True,
+ ),
+ PacketimpactTestInfo(
name = "tcp_paws_mechanism",
# TODO(b/156682000): Fix netstack then remove the line below.
expect_netstack_failure = True,
@@ -277,6 +287,11 @@ ALL_TESTS = [
PacketimpactTestInfo(
name = "tcp_info",
),
+ PacketimpactTestInfo(
+ name = "tcp_fin_retransmission",
+ # TODO(b/181625316): Fix netstack then remove the line below.
+ expect_netstack_failure = True,
+ ),
]
def validate_all_tests():
diff --git a/test/packetimpact/testbench/connections.go b/test/packetimpact/testbench/connections.go
index bafc45d3b..8ad9040ff 100644
--- a/test/packetimpact/testbench/connections.go
+++ b/test/packetimpact/testbench/connections.go
@@ -823,6 +823,27 @@ func (conn *TCPIPv4) LocalAddr(t *testing.T) *unix.SockaddrInet4 {
return sa
}
+// GenerateOTWSeqSegment generates a segment with
+// seqnum = RCV.NXT + RCV.WND + seqNumOffset, the generated segment is only
+// acceptable when seqNumOffset is 0, otherwise an ACK is expected from the
+// receiver.
+func GenerateOTWSeqSegment(t *testing.T, conn *TCPIPv4, seqNumOffset seqnum.Size, windowSize seqnum.Size) TCP {
+ t.Helper()
+ lastAcceptable := conn.LocalSeqNum(t).Add(windowSize)
+ otwSeq := uint32(lastAcceptable.Add(seqNumOffset))
+ return TCP{SeqNum: Uint32(otwSeq), Flags: TCPFlags(header.TCPFlagAck)}
+}
+
+// GenerateUnaccACKSegment generates a segment with
+// acknum = SND.NXT + seqNumOffset, the generated segment is only acceptable
+// when seqNumOffset is 0, otherwise an ACK is expected from the receiver.
+func GenerateUnaccACKSegment(t *testing.T, conn *TCPIPv4, seqNumOffset seqnum.Size, windowSize seqnum.Size) TCP {
+ t.Helper()
+ lastAcceptable := conn.RemoteSeqNum(t)
+ unaccAck := uint32(lastAcceptable.Add(seqNumOffset))
+ return TCP{AckNum: Uint32(unaccAck), Flags: TCPFlags(header.TCPFlagAck)}
+}
+
// IPv4Conn maintains the state for all the layers in a IPv4 connection.
type IPv4Conn struct {
Connection
diff --git a/test/packetimpact/testbench/dut.go b/test/packetimpact/testbench/dut.go
index f4c83ab96..eabdc8cb3 100644
--- a/test/packetimpact/testbench/dut.go
+++ b/test/packetimpact/testbench/dut.go
@@ -773,16 +773,19 @@ func (dut *DUT) SetSockLingerOption(t *testing.T, sockfd int32, timeout time.Dur
// 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 {
+func (dut *DUT) Shutdown(t *testing.T, fd, how int32) {
t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
- return dut.ShutdownWithErrno(ctx, t, fd, how)
+ ret, err := dut.ShutdownWithErrno(ctx, t, fd, how)
+ if ret != 0 {
+ t.Fatalf("failed to shutdown(%d, %d): %s", fd, how, err)
+ }
}
// ShutdownWithErrno calls shutdown on the DUT.
-func (dut *DUT) ShutdownWithErrno(ctx context.Context, t *testing.T, fd, how int32) error {
+func (dut *DUT) ShutdownWithErrno(ctx context.Context, t *testing.T, fd, how int32) (int32, error) {
t.Helper()
req := &pb.ShutdownRequest{
@@ -793,5 +796,8 @@ func (dut *DUT) ShutdownWithErrno(ctx context.Context, t *testing.T, fd, how int
if err != nil {
t.Fatalf("failed to call Shutdown: %s", err)
}
- return unix.Errno(resp.GetErrno_())
+ if resp.GetErrno_() == 0 {
+ return resp.GetRet(), nil
+ }
+ return resp.GetRet(), unix.Errno(resp.GetErrno_())
}
diff --git a/test/packetimpact/tests/BUILD b/test/packetimpact/tests/BUILD
index 301cf4980..d5cb0ae06 100644
--- a/test/packetimpact/tests/BUILD
+++ b/test/packetimpact/tests/BUILD
@@ -124,6 +124,17 @@ packetimpact_testbench(
)
packetimpact_testbench(
+ name = "tcp_outside_the_window_closing",
+ srcs = ["tcp_outside_the_window_closing_test.go"],
+ deps = [
+ "//pkg/tcpip/header",
+ "//pkg/tcpip/seqnum",
+ "//test/packetimpact/testbench",
+ "@org_golang_x_sys//unix:go_default_library",
+ ],
+)
+
+packetimpact_testbench(
name = "tcp_noaccept_close_rst",
srcs = ["tcp_noaccept_close_rst_test.go"],
deps = [
@@ -155,6 +166,17 @@ packetimpact_testbench(
)
packetimpact_testbench(
+ name = "tcp_unacc_seq_ack_closing",
+ srcs = ["tcp_unacc_seq_ack_closing_test.go"],
+ deps = [
+ "//pkg/tcpip/header",
+ "//pkg/tcpip/seqnum",
+ "//test/packetimpact/testbench",
+ "@org_golang_x_sys//unix:go_default_library",
+ ],
+)
+
+packetimpact_testbench(
name = "tcp_paws_mechanism",
srcs = ["tcp_paws_mechanism_test.go"],
deps = [
@@ -375,6 +397,16 @@ packetimpact_testbench(
],
)
+packetimpact_testbench(
+ name = "tcp_fin_retransmission",
+ srcs = ["tcp_fin_retransmission_test.go"],
+ deps = [
+ "//pkg/tcpip/header",
+ "//test/packetimpact/testbench",
+ "@org_golang_x_sys//unix:go_default_library",
+ ],
+)
+
validate_all_tests()
[packetimpact_go_test(
diff --git a/test/packetimpact/tests/tcp_fin_retransmission_test.go b/test/packetimpact/tests/tcp_fin_retransmission_test.go
new file mode 100644
index 000000000..500f7a783
--- /dev/null
+++ b/test/packetimpact/tests/tcp_fin_retransmission_test.go
@@ -0,0 +1,87 @@
+// 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 tcp_fin_retransmission_test
+
+import (
+ "flag"
+ "testing"
+ "time"
+
+ "golang.org/x/sys/unix"
+ "gvisor.dev/gvisor/pkg/tcpip/header"
+ "gvisor.dev/gvisor/test/packetimpact/testbench"
+)
+
+func init() {
+ testbench.Initialize(flag.CommandLine)
+}
+
+// TestTCPClosingFinRetransmission tests that TCP implementation should retransmit
+// FIN segment in CLOSING state.
+func TestTCPClosingFinRetransmission(t *testing.T) {
+ for _, tt := range []struct {
+ description string
+ flags header.TCPFlags
+ }{
+ {"CLOSING", header.TCPFlagAck | header.TCPFlagFin},
+ {"FIN_WAIT_1", header.TCPFlagAck},
+ } {
+ t.Run(tt.description, func(t *testing.T) {
+ dut := testbench.NewDUT(t)
+ listenFD, remotePort := dut.CreateListener(t, unix.SOCK_STREAM, unix.IPPROTO_TCP, 1)
+ defer dut.Close(t, listenFD)
+ conn := dut.Net.NewTCPIPv4(t, testbench.TCP{DstPort: &remotePort}, testbench.TCP{SrcPort: &remotePort})
+ defer conn.Close(t)
+ conn.Connect(t)
+ acceptFD, _ := dut.Accept(t, listenFD)
+ defer dut.Close(t, acceptFD)
+
+ // Give a chance for the dut to estimate RTO with RTT from the DATA-ACK.
+ // TODO(gvisor.dev/issue/2685) Estimate RTO during handshake, after which
+ // we can skip the next block of code.
+ sampleData := []byte("Sample Data")
+ if got, want := dut.Send(t, acceptFD, sampleData, 0), len(sampleData); int(got) != want {
+ t.Fatalf("got dut.Send(t, %d, %s, 0) = %d, want %d", acceptFD, sampleData, got, want)
+ }
+ if _, err := conn.ExpectData(t, &testbench.TCP{}, &testbench.Payload{Bytes: sampleData}, time.Second); err != nil {
+ t.Fatalf("expected payload was not received: %s", err)
+ }
+ conn.Send(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagAck)})
+
+ dut.Shutdown(t, acceptFD, unix.SHUT_WR)
+
+ if _, err := conn.Expect(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagFin | header.TCPFlagAck)}, time.Second); err != nil {
+ t.Fatalf("expected FINACK from DUT, but got none: %s", err)
+ }
+
+ // Do not ack the FIN from DUT so that we can test for retransmission.
+ seqNumForTheirFIN := testbench.Uint32(uint32(*conn.RemoteSeqNum(t)) - 1)
+ conn.Send(t, testbench.TCP{AckNum: seqNumForTheirFIN, Flags: testbench.TCPFlags(tt.flags)})
+
+ if tt.flags&header.TCPFlagFin != 0 {
+ if _, err := conn.Expect(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagAck)}, time.Second); err != nil {
+ t.Errorf("expected an ACK to our FIN, but got none: %s", err)
+ }
+ }
+
+ if _, err := conn.Expect(t, testbench.TCP{
+ SeqNum: seqNumForTheirFIN,
+ Flags: testbench.TCPFlags(header.TCPFlagFin | header.TCPFlagAck),
+ }, time.Second); err != nil {
+ t.Errorf("expected retransmission of FIN from the DUT: %s", err)
+ }
+ })
+ }
+}
diff --git a/test/packetimpact/tests/tcp_outside_the_window_closing_test.go b/test/packetimpact/tests/tcp_outside_the_window_closing_test.go
new file mode 100644
index 000000000..1097746c7
--- /dev/null
+++ b/test/packetimpact/tests/tcp_outside_the_window_closing_test.go
@@ -0,0 +1,86 @@
+// Copyright 2021 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 tcp_outside_the_window_closing_test
+
+import (
+ "flag"
+ "fmt"
+ "testing"
+ "time"
+
+ "golang.org/x/sys/unix"
+ "gvisor.dev/gvisor/pkg/tcpip/header"
+ "gvisor.dev/gvisor/pkg/tcpip/seqnum"
+ "gvisor.dev/gvisor/test/packetimpact/testbench"
+)
+
+func init() {
+ testbench.Initialize(flag.CommandLine)
+}
+
+// TestAckOTWSeqInClosing tests that the DUT should send an ACK with
+// the right ACK number when receiving a packet with OTW Seq number
+// in CLOSING state. https://tools.ietf.org/html/rfc793#page-69
+func TestAckOTWSeqInClosing(t *testing.T) {
+ for seqNumOffset := seqnum.Size(0); seqNumOffset < 3; seqNumOffset++ {
+ for _, tt := range []struct {
+ description string
+ flags header.TCPFlags
+ payloads testbench.Layers
+ }{
+ {"SYN", header.TCPFlagSyn, nil},
+ {"SYNACK", header.TCPFlagSyn | header.TCPFlagAck, nil},
+ {"ACK", header.TCPFlagAck, nil},
+ {"FINACK", header.TCPFlagFin | header.TCPFlagAck, nil},
+ {"Data", header.TCPFlagAck, []testbench.Layer{&testbench.Payload{Bytes: []byte("abc123")}}},
+ } {
+ t.Run(fmt.Sprintf("%s%d", tt.description, seqNumOffset), func(t *testing.T) {
+ dut := testbench.NewDUT(t)
+ listenFD, remotePort := dut.CreateListener(t, unix.SOCK_STREAM, unix.IPPROTO_TCP, 1)
+ defer dut.Close(t, listenFD)
+ conn := dut.Net.NewTCPIPv4(t, testbench.TCP{DstPort: &remotePort}, testbench.TCP{SrcPort: &remotePort})
+ defer conn.Close(t)
+ conn.Connect(t)
+ acceptFD, _ := dut.Accept(t, listenFD)
+ defer dut.Close(t, acceptFD)
+
+ dut.Shutdown(t, acceptFD, unix.SHUT_WR)
+
+ if _, err := conn.Expect(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagFin | header.TCPFlagAck)}, time.Second); err != nil {
+ t.Fatalf("expected FINACK from DUT, but got none: %s", err)
+ }
+
+ // Do not ack the FIN from DUT so that the TCP state on DUT is CLOSING instead of CLOSED.
+ seqNumForTheirFIN := testbench.Uint32(uint32(*conn.RemoteSeqNum(t)) - 1)
+ conn.Send(t, testbench.TCP{AckNum: seqNumForTheirFIN, Flags: testbench.TCPFlags(header.TCPFlagFin | header.TCPFlagAck)})
+
+ if _, err := conn.Expect(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagAck)}, time.Second); err != nil {
+ t.Errorf("expected an ACK to our FIN, but got none: %s", err)
+ }
+
+ windowSize := seqnum.Size(*conn.SynAck(t).WindowSize) + seqNumOffset
+ conn.SendFrameStateless(t, conn.CreateFrame(t, testbench.Layers{&testbench.TCP{
+ SeqNum: testbench.Uint32(uint32(conn.LocalSeqNum(t).Add(windowSize))),
+ AckNum: seqNumForTheirFIN,
+ Flags: testbench.TCPFlags(tt.flags),
+ }}, tt.payloads...))
+
+ if _, err := conn.Expect(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagAck)}, time.Second); err != nil {
+ t.Errorf("expected an ACK but got none: %s", err)
+ }
+ })
+ }
+ }
+}
diff --git a/test/packetimpact/tests/tcp_outside_the_window_test.go b/test/packetimpact/tests/tcp_outside_the_window_test.go
index e442268be..7cd7ff703 100644
--- a/test/packetimpact/tests/tcp_outside_the_window_test.go
+++ b/test/packetimpact/tests/tcp_outside_the_window_test.go
@@ -79,7 +79,7 @@ func TestTCPOutsideTheWindow(t *testing.T) {
Flags: testbench.TCPFlags(tt.tcpFlags),
SeqNum: testbench.Uint32(uint32(conn.LocalSeqNum(t).Add(windowSize))),
}, tt.payload...)
- timeout := 3 * time.Second
+ timeout := time.Second
gotACK, err := conn.Expect(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagAck), AckNum: localSeqNum}, timeout)
if tt.expectACK && err != nil {
t.Fatalf("expected an ACK packet within %s but got none: %s", timeout, err)
diff --git a/test/packetimpact/tests/tcp_unacc_seq_ack_closing_test.go b/test/packetimpact/tests/tcp_unacc_seq_ack_closing_test.go
new file mode 100644
index 000000000..a208210ac
--- /dev/null
+++ b/test/packetimpact/tests/tcp_unacc_seq_ack_closing_test.go
@@ -0,0 +1,94 @@
+// Copyright 2021 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 tcp_unacc_seq_ack_closing_test
+
+import (
+ "flag"
+ "fmt"
+ "testing"
+ "time"
+
+ "golang.org/x/sys/unix"
+ "gvisor.dev/gvisor/pkg/tcpip/header"
+ "gvisor.dev/gvisor/pkg/tcpip/seqnum"
+ "gvisor.dev/gvisor/test/packetimpact/testbench"
+)
+
+func init() {
+ testbench.Initialize(flag.CommandLine)
+}
+
+func TestSimultaneousCloseUnaccSeqAck(t *testing.T) {
+ for _, tt := range []struct {
+ description string
+ makeTestingTCP func(t *testing.T, conn *testbench.TCPIPv4, seqNumOffset, windowSize seqnum.Size) testbench.TCP
+ seqNumOffset seqnum.Size
+ expectAck bool
+ }{
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 0, expectAck: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 1, expectAck: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 2, expectAck: true},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 0, expectAck: false},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 1, expectAck: true},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 2, expectAck: true},
+ } {
+ t.Run(fmt.Sprintf("%s:offset=%d", tt.description, tt.seqNumOffset), func(t *testing.T) {
+ dut := testbench.NewDUT(t)
+ listenFD, remotePort := dut.CreateListener(t, unix.SOCK_STREAM, unix.IPPROTO_TCP, 1 /*backlog*/)
+ defer dut.Close(t, listenFD)
+ conn := dut.Net.NewTCPIPv4(t, testbench.TCP{DstPort: &remotePort}, testbench.TCP{SrcPort: &remotePort})
+ defer conn.Close(t)
+
+ conn.Connect(t)
+ acceptFD, _ := dut.Accept(t, listenFD)
+
+ // Trigger active close.
+ dut.Shutdown(t, acceptFD, unix.SHUT_WR)
+
+ gotTCP, err := conn.Expect(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagFin | header.TCPFlagAck)}, time.Second)
+ if err != nil {
+ t.Fatalf("expected a FIN: %s", err)
+ }
+ // Do not ack the FIN from DUT so that we get to CLOSING.
+ seqNumForTheirFIN := testbench.Uint32(uint32(*conn.RemoteSeqNum(t)) - 1)
+ conn.Send(t, testbench.TCP{AckNum: seqNumForTheirFIN, Flags: testbench.TCPFlags(header.TCPFlagFin | header.TCPFlagAck)})
+
+ if _, err := conn.Expect(t, testbench.TCP{Flags: testbench.TCPFlags(header.TCPFlagAck)}, time.Second); err != nil {
+ t.Errorf("expected an ACK to our FIN, but got none: %s", err)
+ }
+
+ sampleData := []byte("Sample Data")
+ samplePayload := &testbench.Payload{Bytes: sampleData}
+
+ origSeq := uint32(*conn.LocalSeqNum(t))
+ // Send a segment with OTW Seq / unacc ACK.
+ tcp := tt.makeTestingTCP(t, &conn, tt.seqNumOffset, seqnum.Size(*gotTCP.WindowSize))
+ if tt.description == "OTWSeq" {
+ // If we generate an OTW Seq segment, make sure we don't acknowledge their FIN so that
+ // we stay in CLOSING.
+ tcp.AckNum = seqNumForTheirFIN
+ }
+ conn.Send(t, tcp, samplePayload)
+
+ got, err := conn.Expect(t, testbench.TCP{AckNum: testbench.Uint32(origSeq), Flags: testbench.TCPFlags(header.TCPFlagAck)}, time.Second)
+ if tt.expectAck && err != nil {
+ t.Errorf("expected an ack in CLOSING state, but got none: %s", err)
+ }
+ if !tt.expectAck && got != nil {
+ t.Errorf("expected no ack in CLOSING state, but got one: %s", got)
+ }
+ })
+ }
+}
diff --git a/test/packetimpact/tests/tcp_unacc_seq_ack_test.go b/test/packetimpact/tests/tcp_unacc_seq_ack_test.go
index 92b54b72e..ce0a26171 100644
--- a/test/packetimpact/tests/tcp_unacc_seq_ack_test.go
+++ b/test/packetimpact/tests/tcp_unacc_seq_ack_test.go
@@ -38,12 +38,12 @@ func TestEstablishedUnaccSeqAck(t *testing.T) {
expectAck bool
restoreSeq bool
}{
- {description: "OTWSeq", makeTestingTCP: generateOTWSeqSegment, seqNumOffset: 0, expectAck: true, restoreSeq: true},
- {description: "OTWSeq", makeTestingTCP: generateOTWSeqSegment, seqNumOffset: 1, expectAck: true, restoreSeq: true},
- {description: "OTWSeq", makeTestingTCP: generateOTWSeqSegment, seqNumOffset: 2, expectAck: true, restoreSeq: true},
- {description: "UnaccAck", makeTestingTCP: generateUnaccACKSegment, seqNumOffset: 0, expectAck: true, restoreSeq: false},
- {description: "UnaccAck", makeTestingTCP: generateUnaccACKSegment, seqNumOffset: 1, expectAck: false, restoreSeq: true},
- {description: "UnaccAck", makeTestingTCP: generateUnaccACKSegment, seqNumOffset: 2, expectAck: false, restoreSeq: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 0, expectAck: true, restoreSeq: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 1, expectAck: true, restoreSeq: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 2, expectAck: true, restoreSeq: true},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 0, expectAck: true, restoreSeq: false},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 1, expectAck: false, restoreSeq: true},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 2, expectAck: false, restoreSeq: true},
} {
t.Run(fmt.Sprintf("%s:offset=%d", tt.description, tt.seqNumOffset), func(t *testing.T) {
dut := testbench.NewDUT(t)
@@ -91,12 +91,12 @@ func TestPassiveCloseUnaccSeqAck(t *testing.T) {
seqNumOffset seqnum.Size
expectAck bool
}{
- {description: "OTWSeq", makeTestingTCP: generateOTWSeqSegment, seqNumOffset: 0, expectAck: false},
- {description: "OTWSeq", makeTestingTCP: generateOTWSeqSegment, seqNumOffset: 1, expectAck: true},
- {description: "OTWSeq", makeTestingTCP: generateOTWSeqSegment, seqNumOffset: 2, expectAck: true},
- {description: "UnaccAck", makeTestingTCP: generateUnaccACKSegment, seqNumOffset: 0, expectAck: false},
- {description: "UnaccAck", makeTestingTCP: generateUnaccACKSegment, seqNumOffset: 1, expectAck: true},
- {description: "UnaccAck", makeTestingTCP: generateUnaccACKSegment, seqNumOffset: 2, expectAck: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 0, expectAck: false},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 1, expectAck: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 2, expectAck: true},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 0, expectAck: false},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 1, expectAck: true},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 2, expectAck: true},
} {
t.Run(fmt.Sprintf("%s:offset=%d", tt.description, tt.seqNumOffset), func(t *testing.T) {
dut := testbench.NewDUT(t)
@@ -152,12 +152,12 @@ func TestActiveCloseUnaccpSeqAck(t *testing.T) {
seqNumOffset seqnum.Size
restoreSeq bool
}{
- {description: "OTWSeq", makeTestingTCP: generateOTWSeqSegment, seqNumOffset: 0, restoreSeq: true},
- {description: "OTWSeq", makeTestingTCP: generateOTWSeqSegment, seqNumOffset: 1, restoreSeq: true},
- {description: "OTWSeq", makeTestingTCP: generateOTWSeqSegment, seqNumOffset: 2, restoreSeq: true},
- {description: "UnaccAck", makeTestingTCP: generateUnaccACKSegment, seqNumOffset: 0, restoreSeq: false},
- {description: "UnaccAck", makeTestingTCP: generateUnaccACKSegment, seqNumOffset: 1, restoreSeq: true},
- {description: "UnaccAck", makeTestingTCP: generateUnaccACKSegment, seqNumOffset: 2, restoreSeq: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 0, restoreSeq: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 1, restoreSeq: true},
+ {description: "OTWSeq", makeTestingTCP: testbench.GenerateOTWSeqSegment, seqNumOffset: 2, restoreSeq: true},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 0, restoreSeq: false},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 1, restoreSeq: true},
+ {description: "UnaccAck", makeTestingTCP: testbench.GenerateUnaccACKSegment, seqNumOffset: 2, restoreSeq: true},
} {
t.Run(fmt.Sprintf("%s:offset=%d", tt.description, tt.seqNumOffset), func(t *testing.T) {
dut := testbench.NewDUT(t)
@@ -209,22 +209,3 @@ func TestActiveCloseUnaccpSeqAck(t *testing.T) {
})
}
}
-
-// generateOTWSeqSegment generates an segment with
-// seqnum = RCV.NXT + RCV.WND + seqNumOffset, the generated segment is only
-// acceptable when seqNumOffset is 0, otherwise an ACK is expected from the
-// receiver.
-func generateOTWSeqSegment(t *testing.T, conn *testbench.TCPIPv4, seqNumOffset seqnum.Size, windowSize seqnum.Size) testbench.TCP {
- lastAcceptable := conn.LocalSeqNum(t).Add(windowSize)
- otwSeq := uint32(lastAcceptable.Add(seqNumOffset))
- return testbench.TCP{SeqNum: testbench.Uint32(otwSeq), Flags: testbench.TCPFlags(header.TCPFlagAck)}
-}
-
-// generateUnaccACKSegment generates an segment with
-// acknum = SND.NXT + seqNumOffset, the generated segment is only acceptable
-// when seqNumOffset is 0, otherwise an ACK is expected from the receiver.
-func generateUnaccACKSegment(t *testing.T, conn *testbench.TCPIPv4, seqNumOffset seqnum.Size, windowSize seqnum.Size) testbench.TCP {
- lastAcceptable := conn.RemoteSeqNum(t)
- unaccAck := uint32(lastAcceptable.Add(seqNumOffset))
- return testbench.TCP{AckNum: testbench.Uint32(unaccAck), Flags: testbench.TCPFlags(header.TCPFlagAck)}
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 17:58:32 +0000