diff options
Diffstat (limited to 'test/packetimpact/tests')
| -rw-r--r-- | test/packetimpact/tests/BUILD | 128 | ||||
| -rw-r--r-- | test/packetimpact/tests/defs.bzl | 137 | ||||
| -rw-r--r-- | test/packetimpact/tests/fin_wait2_timeout_test.go | 70 | ||||
| -rw-r--r-- | test/packetimpact/tests/icmpv6_param_problem_test.go | 73 | ||||
| -rw-r--r-- | test/packetimpact/tests/tcp_close_wait_ack_test.go | 103 | ||||
| -rw-r--r-- | test/packetimpact/tests/tcp_noaccept_close_rst_test.go | 37 | ||||
| -rw-r--r-- | test/packetimpact/tests/tcp_outside_the_window_test.go | 88 | ||||
| -rw-r--r-- | test/packetimpact/tests/tcp_should_piggyback_test.go | 59 | ||||
| -rw-r--r-- | test/packetimpact/tests/tcp_user_timeout_test.go | 100 | ||||
| -rw-r--r-- | test/packetimpact/tests/tcp_window_shrink_test.go | 68 | ||||
| -rwxr-xr-x | test/packetimpact/tests/test_runner.sh | 325 | ||||
| -rw-r--r-- | test/packetimpact/tests/udp_icmp_error_propagation_test.go | 253 | ||||
| -rw-r--r-- | test/packetimpact/tests/udp_recv_multicast_test.go | 37 |
13 files changed, 0 insertions, 1478 deletions
diff --git a/test/packetimpact/tests/BUILD b/test/packetimpact/tests/BUILD deleted file mode 100644 index 6beccbfd0..000000000 --- a/test/packetimpact/tests/BUILD +++ /dev/null @@ -1,128 +0,0 @@ -load("defs.bzl", "packetimpact_go_test") - -package( - default_visibility = ["//test/packetimpact:__subpackages__"], - licenses = ["notice"], -) - -packetimpact_go_test( - name = "fin_wait2_timeout", - srcs = ["fin_wait2_timeout_test.go"], - deps = [ - "//pkg/tcpip/header", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -packetimpact_go_test( - name = "udp_recv_multicast", - srcs = ["udp_recv_multicast_test.go"], - # TODO(b/152813495): Fix netstack then remove the line below. - netstack = False, - deps = [ - "//pkg/tcpip", - "//pkg/tcpip/header", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -packetimpact_go_test( - name = "udp_icmp_error_propagation", - srcs = ["udp_icmp_error_propagation_test.go"], - # TODO(b/153926291): Fix netstack then remove the line below. - netstack = False, - deps = [ - "//pkg/tcpip", - "//pkg/tcpip/header", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -packetimpact_go_test( - name = "tcp_window_shrink", - srcs = ["tcp_window_shrink_test.go"], - # TODO(b/153202472): Fix netstack then remove the line below. - netstack = False, - deps = [ - "//pkg/tcpip/header", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -packetimpact_go_test( - name = "tcp_outside_the_window", - srcs = ["tcp_outside_the_window_test.go"], - deps = [ - "//pkg/tcpip/header", - "//pkg/tcpip/seqnum", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -packetimpact_go_test( - name = "tcp_noaccept_close_rst", - srcs = ["tcp_noaccept_close_rst_test.go"], - deps = [ - "//pkg/tcpip/header", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -packetimpact_go_test( - name = "tcp_should_piggyback", - srcs = ["tcp_should_piggyback_test.go"], - # TODO(b/153680566): Fix netstack then remove the line below. - netstack = False, - deps = [ - "//pkg/tcpip/header", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -packetimpact_go_test( - name = "tcp_close_wait_ack", - srcs = ["tcp_close_wait_ack_test.go"], - # TODO(b/153574037): Fix netstack then remove the line below. - netstack = False, - deps = [ - "//pkg/tcpip/header", - "//pkg/tcpip/seqnum", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -packetimpact_go_test( - name = "tcp_user_timeout", - srcs = ["tcp_user_timeout_test.go"], - deps = [ - "//pkg/tcpip/header", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -packetimpact_go_test( - name = "icmpv6_param_problem", - srcs = ["icmpv6_param_problem_test.go"], - # TODO(b/153485026): Fix netstack then remove the line below. - netstack = False, - deps = [ - "//pkg/tcpip", - "//pkg/tcpip/header", - "//test/packetimpact/testbench", - "@org_golang_x_sys//unix:go_default_library", - ], -) - -sh_binary( - name = "test_runner", - srcs = ["test_runner.sh"], -) diff --git a/test/packetimpact/tests/defs.bzl b/test/packetimpact/tests/defs.bzl deleted file mode 100644 index 27c5de375..000000000 --- a/test/packetimpact/tests/defs.bzl +++ /dev/null @@ -1,137 +0,0 @@ -"""Defines rules for packetimpact test targets.""" - -load("//tools:defs.bzl", "go_test") - -def _packetimpact_test_impl(ctx): - test_runner = ctx.executable._test_runner - bench = ctx.actions.declare_file("%s-bench" % ctx.label.name) - bench_content = "\n".join([ - "#!/bin/bash", - # This test will run part in a distinct user namespace. This can cause - # permission problems, because all runfiles may not be owned by the - # current user, and no other users will be mapped in that namespace. - # Make sure that everything is readable here. - "find . -type f -exec chmod a+rx {} \\;", - "find . -type d -exec chmod a+rx {} \\;", - "%s %s --posix_server_binary %s --testbench_binary %s $@\n" % ( - test_runner.short_path, - " ".join(ctx.attr.flags), - ctx.files._posix_server_binary[0].short_path, - ctx.files.testbench_binary[0].short_path, - ), - ]) - ctx.actions.write(bench, bench_content, is_executable = True) - - transitive_files = depset() - if hasattr(ctx.attr._test_runner, "data_runfiles"): - transitive_files = depset(ctx.attr._test_runner.data_runfiles.files) - runfiles = ctx.runfiles( - files = [test_runner] + ctx.files.testbench_binary + ctx.files._posix_server_binary, - transitive_files = transitive_files, - collect_default = True, - collect_data = True, - ) - return [DefaultInfo(executable = bench, runfiles = runfiles)] - -_packetimpact_test = rule( - attrs = { - "_test_runner": attr.label( - executable = True, - cfg = "target", - default = ":test_runner", - ), - "_posix_server_binary": attr.label( - cfg = "target", - default = "//test/packetimpact/dut:posix_server", - ), - "testbench_binary": attr.label( - cfg = "target", - mandatory = True, - ), - "flags": attr.string_list( - mandatory = False, - default = [], - ), - }, - test = True, - implementation = _packetimpact_test_impl, -) - -PACKETIMPACT_TAGS = ["local", "manual"] - -def packetimpact_linux_test( - name, - testbench_binary, - expect_failure = False, - **kwargs): - """Add a packetimpact test on linux. - - Args: - name: name of the test - testbench_binary: the testbench binary - **kwargs: all the other args, forwarded to _packetimpact_test - """ - expect_failure_flag = ["--expect_failure"] if expect_failure else [] - _packetimpact_test( - name = name + "_linux_test", - testbench_binary = testbench_binary, - flags = ["--dut_platform", "linux"] + expect_failure_flag, - tags = PACKETIMPACT_TAGS + ["packetimpact"], - **kwargs - ) - -def packetimpact_netstack_test( - name, - testbench_binary, - expect_failure = False, - **kwargs): - """Add a packetimpact test on netstack. - - Args: - name: name of the test - testbench_binary: the testbench binary - expect_failure: the test must fail - **kwargs: all the other args, forwarded to _packetimpact_test - """ - expect_failure_flag = [] - if expect_failure: - expect_failure_flag = ["--expect_failure"] - _packetimpact_test( - name = name + "_netstack_test", - testbench_binary = testbench_binary, - # This is the default runtime unless - # "--test_arg=--runtime=OTHER_RUNTIME" is used to override the value. - flags = ["--dut_platform", "netstack", "--runtime=runsc-d"] + expect_failure_flag, - tags = PACKETIMPACT_TAGS + ["packetimpact"], - **kwargs - ) - -def packetimpact_go_test(name, size = "small", pure = True, linux = True, netstack = True, **kwargs): - """Add packetimpact tests written in go. - - Args: - name: name of the test - size: size of the test - pure: make a static go binary - linux: generate a linux test - netstack: generate a netstack test - **kwargs: all the other args, forwarded to go_test - """ - testbench_binary = name + "_test" - go_test( - name = testbench_binary, - size = size, - pure = pure, - tags = PACKETIMPACT_TAGS, - **kwargs - ) - packetimpact_linux_test( - name = name, - expect_failure = not linux, - testbench_binary = testbench_binary, - ) - packetimpact_netstack_test( - name = name, - expect_failure = not netstack, - testbench_binary = testbench_binary, - ) diff --git a/test/packetimpact/tests/fin_wait2_timeout_test.go b/test/packetimpact/tests/fin_wait2_timeout_test.go deleted file mode 100644 index 99dc77f9a..000000000 --- a/test/packetimpact/tests/fin_wait2_timeout_test.go +++ /dev/null @@ -1,70 +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 fin_wait2_timeout_test - -import ( - "testing" - "time" - - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/tcpip/header" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -func TestFinWait2Timeout(t *testing.T) { - for _, tt := range []struct { - description string - linger2 bool - }{ - {"WithLinger2", true}, - {"WithoutLinger2", false}, - } { - t.Run(tt.description, func(t *testing.T) { - dut := tb.NewDUT(t) - defer dut.TearDown() - listenFd, remotePort := dut.CreateListener(unix.SOCK_STREAM, unix.IPPROTO_TCP, 1) - defer dut.Close(listenFd) - conn := tb.NewTCPIPv4(t, tb.TCP{DstPort: &remotePort}, tb.TCP{SrcPort: &remotePort}) - defer conn.Close() - conn.Handshake() - - acceptFd, _ := dut.Accept(listenFd) - if tt.linger2 { - tv := unix.Timeval{Sec: 1, Usec: 0} - dut.SetSockOptTimeval(acceptFd, unix.SOL_TCP, unix.TCP_LINGER2, &tv) - } - dut.Close(acceptFd) - - if _, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagFin | header.TCPFlagAck)}, time.Second); err != nil { - t.Fatalf("expected a FIN-ACK within 1 second but got none: %s", err) - } - conn.Send(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck)}) - - time.Sleep(5 * time.Second) - conn.Drain() - - conn.Send(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck)}) - if tt.linger2 { - if _, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagRst)}, time.Second); err != nil { - t.Fatalf("expected a RST packet within a second but got none: %s", err) - } - } else { - if got, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagRst)}, 10*time.Second); got != nil || err == nil { - t.Fatalf("expected no RST packets within ten seconds but got one: %s", got) - } - } - }) - } -} diff --git a/test/packetimpact/tests/icmpv6_param_problem_test.go b/test/packetimpact/tests/icmpv6_param_problem_test.go deleted file mode 100644 index b48e55df4..000000000 --- a/test/packetimpact/tests/icmpv6_param_problem_test.go +++ /dev/null @@ -1,73 +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 icmpv6_param_problem_test - -import ( - "encoding/binary" - "testing" - "time" - - "gvisor.dev/gvisor/pkg/tcpip/header" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -// TestICMPv6ParamProblemTest sends a packet with a bad next header. The DUT -// should respond with an ICMPv6 Parameter Problem message. -func TestICMPv6ParamProblemTest(t *testing.T) { - dut := tb.NewDUT(t) - defer dut.TearDown() - conn := tb.NewIPv6Conn(t, tb.IPv6{}, tb.IPv6{}) - defer conn.Close() - ipv6 := tb.IPv6{ - // 254 is reserved and used for experimentation and testing. This should - // cause an error. - NextHeader: tb.Uint8(254), - } - icmpv6 := tb.ICMPv6{ - Type: tb.ICMPv6Type(header.ICMPv6EchoRequest), - NDPPayload: []byte("hello world"), - } - - toSend := conn.CreateFrame(ipv6, &icmpv6) - conn.SendFrame(toSend) - - // Build the expected ICMPv6 payload, which includes an index to the - // problematic byte and also the problematic packet as described in - // https://tools.ietf.org/html/rfc4443#page-12 . - ipv6Sent := toSend[1:] - expectedPayload, err := ipv6Sent.ToBytes() - if err != nil { - t.Fatalf("can't convert %s to bytes: %s", ipv6Sent, err) - } - - // The problematic field is the NextHeader. - b := make([]byte, 4) - binary.BigEndian.PutUint32(b, header.IPv6NextHeaderOffset) - expectedPayload = append(b, expectedPayload...) - expectedICMPv6 := tb.ICMPv6{ - Type: tb.ICMPv6Type(header.ICMPv6ParamProblem), - NDPPayload: expectedPayload, - } - - paramProblem := tb.Layers{ - &tb.Ether{}, - &tb.IPv6{}, - &expectedICMPv6, - } - timeout := time.Second - if _, err := conn.ExpectFrame(paramProblem, timeout); err != nil { - t.Errorf("expected %s within %s but got none: %s", paramProblem, timeout, err) - } -} diff --git a/test/packetimpact/tests/tcp_close_wait_ack_test.go b/test/packetimpact/tests/tcp_close_wait_ack_test.go deleted file mode 100644 index 153ce285b..000000000 --- a/test/packetimpact/tests/tcp_close_wait_ack_test.go +++ /dev/null @@ -1,103 +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 tcp_close_wait_ack_test - -import ( - "fmt" - "testing" - "time" - - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/tcpip/header" - "gvisor.dev/gvisor/pkg/tcpip/seqnum" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -func TestCloseWaitAck(t *testing.T) { - for _, tt := range []struct { - description string - makeTestingTCP func(conn *tb.TCPIPv4, seqNumOffset seqnum.Size, windowSize seqnum.Size) tb.TCP - seqNumOffset seqnum.Size - expectAck bool - }{ - {"OTW", GenerateOTWSeqSegment, 0, false}, - {"OTW", GenerateOTWSeqSegment, 1, true}, - {"OTW", GenerateOTWSeqSegment, 2, true}, - {"ACK", GenerateUnaccACKSegment, 0, false}, - {"ACK", GenerateUnaccACKSegment, 1, true}, - {"ACK", GenerateUnaccACKSegment, 2, true}, - } { - t.Run(fmt.Sprintf("%s%d", tt.description, tt.seqNumOffset), func(t *testing.T) { - dut := tb.NewDUT(t) - defer dut.TearDown() - listenFd, remotePort := dut.CreateListener(unix.SOCK_STREAM, unix.IPPROTO_TCP, 1) - defer dut.Close(listenFd) - conn := tb.NewTCPIPv4(t, tb.TCP{DstPort: &remotePort}, tb.TCP{SrcPort: &remotePort}) - defer conn.Close() - - conn.Handshake() - acceptFd, _ := dut.Accept(listenFd) - - // Send a FIN to DUT to intiate the active close - conn.Send(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck | header.TCPFlagFin)}) - gotTCP, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck)}, time.Second) - if err != nil { - t.Fatalf("expected an ACK for our fin and DUT should enter CLOSE_WAIT: %s", err) - } - windowSize := seqnum.Size(*gotTCP.WindowSize) - - // Send a segment with OTW Seq / unacc ACK and expect an ACK back - conn.Send(tt.makeTestingTCP(&conn, tt.seqNumOffset, windowSize), &tb.Payload{Bytes: []byte("Sample Data")}) - gotAck, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck)}, time.Second) - if tt.expectAck && err != nil { - t.Fatalf("expected an ack but got none: %s", err) - } - if !tt.expectAck && gotAck != nil { - t.Fatalf("expected no ack but got one: %s", gotAck) - } - - // Now let's verify DUT is indeed in CLOSE_WAIT - dut.Close(acceptFd) - if _, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck | header.TCPFlagFin)}, time.Second); err != nil { - t.Fatalf("expected DUT to send a FIN: %s", err) - } - // Ack the FIN from DUT - conn.Send(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck)}) - // Send some extra data to DUT - conn.Send(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck)}, &tb.Payload{Bytes: []byte("Sample Data")}) - if _, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagRst)}, time.Second); err != nil { - t.Fatalf("expected DUT to send an RST: %s", err) - } - }) - } -} - -// This 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(conn *tb.TCPIPv4, seqNumOffset seqnum.Size, windowSize seqnum.Size) tb.TCP { - lastAcceptable := conn.LocalSeqNum().Add(windowSize) - otwSeq := uint32(lastAcceptable.Add(seqNumOffset)) - return tb.TCP{SeqNum: tb.Uint32(otwSeq), Flags: tb.Uint8(header.TCPFlagAck)} -} - -// This 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(conn *tb.TCPIPv4, seqNumOffset seqnum.Size, windowSize seqnum.Size) tb.TCP { - lastAcceptable := conn.RemoteSeqNum() - unaccAck := uint32(lastAcceptable.Add(seqNumOffset)) - return tb.TCP{AckNum: tb.Uint32(unaccAck), Flags: tb.Uint8(header.TCPFlagAck)} -} diff --git a/test/packetimpact/tests/tcp_noaccept_close_rst_test.go b/test/packetimpact/tests/tcp_noaccept_close_rst_test.go deleted file mode 100644 index 7ebdd1950..000000000 --- a/test/packetimpact/tests/tcp_noaccept_close_rst_test.go +++ /dev/null @@ -1,37 +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 tcp_noaccept_close_rst_test - -import ( - "testing" - "time" - - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/tcpip/header" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -func TestTcpNoAcceptCloseReset(t *testing.T) { - dut := tb.NewDUT(t) - defer dut.TearDown() - listenFd, remotePort := dut.CreateListener(unix.SOCK_STREAM, unix.IPPROTO_TCP, 1) - conn := tb.NewTCPIPv4(t, tb.TCP{DstPort: &remotePort}, tb.TCP{SrcPort: &remotePort}) - conn.Handshake() - defer conn.Close() - dut.Close(listenFd) - if _, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagRst | header.TCPFlagAck)}, 1*time.Second); err != nil { - t.Fatalf("expected a RST-ACK packet 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 deleted file mode 100644 index db3d3273b..000000000 --- a/test/packetimpact/tests/tcp_outside_the_window_test.go +++ /dev/null @@ -1,88 +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 tcp_outside_the_window_test - -import ( - "fmt" - "testing" - "time" - - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/tcpip/header" - "gvisor.dev/gvisor/pkg/tcpip/seqnum" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -// TestTCPOutsideTheWindows tests the behavior of the DUT when packets arrive -// that are inside or outside the TCP window. Packets that are outside the -// window should force an extra ACK, as described in RFC793 page 69: -// https://tools.ietf.org/html/rfc793#page-69 -func TestTCPOutsideTheWindow(t *testing.T) { - for _, tt := range []struct { - description string - tcpFlags uint8 - payload []tb.Layer - seqNumOffset seqnum.Size - expectACK bool - }{ - {"SYN", header.TCPFlagSyn, nil, 0, true}, - {"SYNACK", header.TCPFlagSyn | header.TCPFlagAck, nil, 0, true}, - {"ACK", header.TCPFlagAck, nil, 0, false}, - {"FIN", header.TCPFlagFin, nil, 0, false}, - {"Data", header.TCPFlagAck, []tb.Layer{&tb.Payload{Bytes: []byte("abc123")}}, 0, true}, - - {"SYN", header.TCPFlagSyn, nil, 1, true}, - {"SYNACK", header.TCPFlagSyn | header.TCPFlagAck, nil, 1, true}, - {"ACK", header.TCPFlagAck, nil, 1, true}, - {"FIN", header.TCPFlagFin, nil, 1, false}, - {"Data", header.TCPFlagAck, []tb.Layer{&tb.Payload{Bytes: []byte("abc123")}}, 1, true}, - - {"SYN", header.TCPFlagSyn, nil, 2, true}, - {"SYNACK", header.TCPFlagSyn | header.TCPFlagAck, nil, 2, true}, - {"ACK", header.TCPFlagAck, nil, 2, true}, - {"FIN", header.TCPFlagFin, nil, 2, false}, - {"Data", header.TCPFlagAck, []tb.Layer{&tb.Payload{Bytes: []byte("abc123")}}, 2, true}, - } { - t.Run(fmt.Sprintf("%s%d", tt.description, tt.seqNumOffset), func(t *testing.T) { - dut := tb.NewDUT(t) - defer dut.TearDown() - listenFD, remotePort := dut.CreateListener(unix.SOCK_STREAM, unix.IPPROTO_TCP, 1) - defer dut.Close(listenFD) - conn := tb.NewTCPIPv4(t, tb.TCP{DstPort: &remotePort}, tb.TCP{SrcPort: &remotePort}) - defer conn.Close() - conn.Handshake() - acceptFD, _ := dut.Accept(listenFD) - defer dut.Close(acceptFD) - - windowSize := seqnum.Size(*conn.SynAck().WindowSize) + tt.seqNumOffset - conn.Drain() - // Ignore whatever incrementing that this out-of-order packet might cause - // to the AckNum. - localSeqNum := tb.Uint32(uint32(*conn.LocalSeqNum())) - conn.Send(tb.TCP{ - Flags: tb.Uint8(tt.tcpFlags), - SeqNum: tb.Uint32(uint32(conn.LocalSeqNum().Add(windowSize))), - }, tt.payload...) - timeout := 3 * time.Second - gotACK, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck), AckNum: localSeqNum}, timeout) - if tt.expectACK && err != nil { - t.Fatalf("expected an ACK packet within %s but got none: %s", timeout, err) - } - if !tt.expectACK && gotACK != nil { - t.Fatalf("expected no ACK packet within %s but got one: %s", timeout, gotACK) - } - }) - } -} diff --git a/test/packetimpact/tests/tcp_should_piggyback_test.go b/test/packetimpact/tests/tcp_should_piggyback_test.go deleted file mode 100644 index b0be6ba23..000000000 --- a/test/packetimpact/tests/tcp_should_piggyback_test.go +++ /dev/null @@ -1,59 +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 tcp_should_piggyback_test - -import ( - "testing" - "time" - - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/tcpip/header" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -func TestPiggyback(t *testing.T) { - dut := tb.NewDUT(t) - defer dut.TearDown() - listenFd, remotePort := dut.CreateListener(unix.SOCK_STREAM, unix.IPPROTO_TCP, 1) - defer dut.Close(listenFd) - conn := tb.NewTCPIPv4(t, tb.TCP{DstPort: &remotePort, WindowSize: tb.Uint16(12)}, tb.TCP{SrcPort: &remotePort}) - defer conn.Close() - - conn.Handshake() - acceptFd, _ := dut.Accept(listenFd) - defer dut.Close(acceptFd) - - dut.SetSockOptInt(acceptFd, unix.IPPROTO_TCP, unix.TCP_NODELAY, 1) - - sampleData := []byte("Sample Data") - - dut.Send(acceptFd, sampleData, 0) - expectedTCP := tb.TCP{Flags: tb.Uint8(header.TCPFlagAck | header.TCPFlagPsh)} - expectedPayload := tb.Payload{Bytes: sampleData} - if _, err := conn.ExpectData(&expectedTCP, &expectedPayload, time.Second); err != nil { - t.Fatalf("Expected %v but didn't get one: %s", tb.Layers{&expectedTCP, &expectedPayload}, err) - } - - // Cause DUT to send us more data as soon as we ACK their first data segment because we have - // a small window. - dut.Send(acceptFd, sampleData, 0) - - // DUT should ACK our segment by piggybacking ACK to their outstanding data segment instead of - // sending a separate ACK packet. - conn.Send(expectedTCP, &expectedPayload) - if _, err := conn.ExpectData(&expectedTCP, &expectedPayload, time.Second); err != nil { - t.Fatalf("Expected %v but didn't get one: %s", tb.Layers{&expectedTCP, &expectedPayload}, err) - } -} diff --git a/test/packetimpact/tests/tcp_user_timeout_test.go b/test/packetimpact/tests/tcp_user_timeout_test.go deleted file mode 100644 index 3cf82badb..000000000 --- a/test/packetimpact/tests/tcp_user_timeout_test.go +++ /dev/null @@ -1,100 +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 tcp_user_timeout_test - -import ( - "fmt" - "testing" - "time" - - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/tcpip/header" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -func sendPayload(conn *tb.TCPIPv4, dut *tb.DUT, fd int32) error { - sampleData := make([]byte, 100) - for i := range sampleData { - sampleData[i] = uint8(i) - } - conn.Drain() - dut.Send(fd, sampleData, 0) - if _, err := conn.ExpectData(&tb.TCP{Flags: tb.Uint8(header.TCPFlagAck | header.TCPFlagPsh)}, &tb.Payload{Bytes: sampleData}, time.Second); err != nil { - return fmt.Errorf("expected data but got none: %w", err) - } - return nil -} - -func sendFIN(conn *tb.TCPIPv4, dut *tb.DUT, fd int32) error { - dut.Close(fd) - return nil -} - -func TestTCPUserTimeout(t *testing.T) { - for _, tt := range []struct { - description string - userTimeout time.Duration - sendDelay time.Duration - }{ - {"NoUserTimeout", 0, 3 * time.Second}, - {"ACKBeforeUserTimeout", 5 * time.Second, 4 * time.Second}, - {"ACKAfterUserTimeout", 5 * time.Second, 7 * time.Second}, - } { - for _, ttf := range []struct { - description string - f func(conn *tb.TCPIPv4, dut *tb.DUT, fd int32) error - }{ - {"AfterPayload", sendPayload}, - {"AfterFIN", sendFIN}, - } { - t.Run(tt.description+ttf.description, func(t *testing.T) { - // Create a socket, listen, TCP handshake, and accept. - dut := tb.NewDUT(t) - defer dut.TearDown() - listenFD, remotePort := dut.CreateListener(unix.SOCK_STREAM, unix.IPPROTO_TCP, 1) - defer dut.Close(listenFD) - conn := tb.NewTCPIPv4(t, tb.TCP{DstPort: &remotePort}, tb.TCP{SrcPort: &remotePort}) - defer conn.Close() - conn.Handshake() - acceptFD, _ := dut.Accept(listenFD) - - if tt.userTimeout != 0 { - dut.SetSockOptInt(acceptFD, unix.SOL_TCP, unix.TCP_USER_TIMEOUT, int32(tt.userTimeout.Milliseconds())) - } - - if err := ttf.f(&conn, &dut, acceptFD); err != nil { - t.Fatal(err) - } - - time.Sleep(tt.sendDelay) - conn.Drain() - conn.Send(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck)}) - - // If TCP_USER_TIMEOUT was set and the above delay was longer than the - // TCP_USER_TIMEOUT then the DUT should send a RST in response to the - // testbench's packet. - expectRST := tt.userTimeout != 0 && tt.sendDelay > tt.userTimeout - expectTimeout := 5 * time.Second - got, err := conn.Expect(tb.TCP{Flags: tb.Uint8(header.TCPFlagRst)}, expectTimeout) - if expectRST && err != nil { - t.Errorf("expected RST packet within %s but got none: %s", expectTimeout, err) - } - if !expectRST && got != nil { - t.Errorf("expected no RST packet within %s but got one: %s", expectTimeout, got) - } - }) - } - } -} diff --git a/test/packetimpact/tests/tcp_window_shrink_test.go b/test/packetimpact/tests/tcp_window_shrink_test.go deleted file mode 100644 index c9354074e..000000000 --- a/test/packetimpact/tests/tcp_window_shrink_test.go +++ /dev/null @@ -1,68 +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 tcp_window_shrink_test - -import ( - "testing" - "time" - - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/tcpip/header" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -func TestWindowShrink(t *testing.T) { - dut := tb.NewDUT(t) - defer dut.TearDown() - listenFd, remotePort := dut.CreateListener(unix.SOCK_STREAM, unix.IPPROTO_TCP, 1) - defer dut.Close(listenFd) - conn := tb.NewTCPIPv4(t, tb.TCP{DstPort: &remotePort}, tb.TCP{SrcPort: &remotePort}) - defer conn.Close() - - conn.Handshake() - acceptFd, _ := dut.Accept(listenFd) - defer dut.Close(acceptFd) - - dut.SetSockOptInt(acceptFd, unix.IPPROTO_TCP, unix.TCP_NODELAY, 1) - - sampleData := []byte("Sample Data") - samplePayload := &tb.Payload{Bytes: sampleData} - - dut.Send(acceptFd, sampleData, 0) - if _, err := conn.ExpectData(&tb.TCP{}, samplePayload, time.Second); err != nil { - t.Fatalf("expected a packet with payload %v: %s", samplePayload, err) - } - conn.Send(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck)}) - - dut.Send(acceptFd, sampleData, 0) - dut.Send(acceptFd, sampleData, 0) - if _, err := conn.ExpectData(&tb.TCP{}, samplePayload, time.Second); err != nil { - t.Fatalf("expected a packet with payload %v: %s", samplePayload, err) - } - if _, err := conn.ExpectData(&tb.TCP{}, samplePayload, time.Second); err != nil { - t.Fatalf("expected a packet with payload %v: %s", samplePayload, err) - } - // We close our receiving window here - conn.Send(tb.TCP{Flags: tb.Uint8(header.TCPFlagAck), WindowSize: tb.Uint16(0)}) - - dut.Send(acceptFd, []byte("Sample Data"), 0) - // Note: There is another kind of zero-window probing which Windows uses (by sending one - // new byte at `RemoteSeqNum`), if netstack wants to go that way, we may want to change - // the following lines. - expectedRemoteSeqNum := *conn.RemoteSeqNum() - 1 - if _, err := conn.ExpectData(&tb.TCP{SeqNum: tb.Uint32(uint32(expectedRemoteSeqNum))}, nil, time.Second); err != nil { - t.Fatalf("expected a packet with sequence number %v: %s", expectedRemoteSeqNum, err) - } -} diff --git a/test/packetimpact/tests/test_runner.sh b/test/packetimpact/tests/test_runner.sh deleted file mode 100755 index 706441cce..000000000 --- a/test/packetimpact/tests/test_runner.sh +++ /dev/null @@ -1,325 +0,0 @@ -#!/bin/bash - -# 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. - -# Run a packetimpact test. Two docker containers are made, one for the -# Device-Under-Test (DUT) and one for the test bench. Each is attached with -# two networks, one for control packets that aid the test and one for test -# packets which are sent as part of the test and observed for correctness. - -set -euxo pipefail - -function failure() { - local lineno=$1 - local msg=$2 - local filename="$0" - echo "FAIL: $filename:$lineno: $msg" -} -trap 'failure ${LINENO} "$BASH_COMMAND"' ERR - -declare -r LONGOPTS="dut_platform:,posix_server_binary:,testbench_binary:,runtime:,tshark,extra_test_arg:,expect_failure" - -# Don't use declare below so that the error from getopt will end the script. -PARSED=$(getopt --options "" --longoptions=$LONGOPTS --name "$0" -- "$@") - -eval set -- "$PARSED" - -declare -a EXTRA_TEST_ARGS - -while true; do - case "$1" in - --dut_platform) - # Either "linux" or "netstack". - declare -r DUT_PLATFORM="$2" - shift 2 - ;; - --posix_server_binary) - declare -r POSIX_SERVER_BINARY="$2" - shift 2 - ;; - --testbench_binary) - declare -r TESTBENCH_BINARY="$2" - shift 2 - ;; - --runtime) - # Not readonly because there might be multiple --runtime arguments and we - # want to use just the last one. Only used if --dut_platform is - # "netstack". - declare RUNTIME="$2" - shift 2 - ;; - --tshark) - declare -r TSHARK="1" - shift 1 - ;; - --extra_test_arg) - EXTRA_TEST_ARGS+="$2" - shift 2 - ;; - --expect_failure) - declare -r EXPECT_FAILURE="1" - shift 1 - ;; - --) - shift - break - ;; - *) - echo "Programming error" - exit 3 - esac -done - -# All the other arguments are scripts. -declare -r scripts="$@" - -# Check that the required flags are defined in a way that is safe for "set -u". -if [[ "${DUT_PLATFORM-}" == "netstack" ]]; then - if [[ -z "${RUNTIME-}" ]]; then - echo "FAIL: Missing --runtime argument: ${RUNTIME-}" - exit 2 - fi - declare -r RUNTIME_ARG="--runtime ${RUNTIME}" -elif [[ "${DUT_PLATFORM-}" == "linux" ]]; then - declare -r RUNTIME_ARG="" -else - echo "FAIL: Bad or missing --dut_platform argument: ${DUT_PLATFORM-}" - exit 2 -fi -if [[ ! -f "${POSIX_SERVER_BINARY-}" ]]; then - echo "FAIL: Bad or missing --posix_server_binary: ${POSIX_SERVER-}" - exit 2 -fi -if [[ ! -f "${TESTBENCH_BINARY-}" ]]; then - echo "FAIL: Bad or missing --testbench_binary: ${TESTBENCH_BINARY-}" - exit 2 -fi - -function new_net_prefix() { - # Class C, 192.0.0.0 to 223.255.255.255, transitionally has mask 24. - echo "$(shuf -i 192-223 -n 1).$(shuf -i 0-255 -n 1).$(shuf -i 0-255 -n 1)" -} - -# Variables specific to the control network and interface start with CTRL_. -# Variables specific to the test network and interface start with TEST_. -# Variables specific to the DUT start with DUT_. -# Variables specific to the test bench start with TESTBENCH_. -# Use random numbers so that test networks don't collide. -declare CTRL_NET="ctrl_net-${RANDOM}${RANDOM}" -declare CTRL_NET_PREFIX=$(new_net_prefix) -declare TEST_NET="test_net-${RANDOM}${RANDOM}" -declare TEST_NET_PREFIX=$(new_net_prefix) -# On both DUT and test bench, testing packets are on the eth2 interface. -declare -r TEST_DEVICE="eth2" -# Number of bits in the *_NET_PREFIX variables. -declare -r NET_MASK="24" -# Last bits of the DUT's IP address. -declare -r DUT_NET_SUFFIX=".10" -# Control port. -declare -r CTRL_PORT="40000" -# Last bits of the test bench's IP address. -declare -r TESTBENCH_NET_SUFFIX=".20" -declare -r TIMEOUT="60" -declare -r IMAGE_TAG="gcr.io/gvisor-presubmit/packetimpact" - -# Make sure that docker is installed. -docker --version - -function finish { - local cleanup_success=1 - - if [[ -z "${TSHARK-}" ]]; then - # Kill tcpdump so that it will flush output. - docker exec -t "${TESTBENCH}" \ - killall tcpdump || \ - cleanup_success=0 - else - # Kill tshark so that it will flush output. - docker exec -t "${TESTBENCH}" \ - killall tshark || \ - cleanup_success=0 - fi - - for net in "${CTRL_NET}" "${TEST_NET}"; do - # Kill all processes attached to ${net}. - for docker_command in "kill" "rm"; do - (docker network inspect "${net}" \ - --format '{{range $key, $value := .Containers}}{{$key}} {{end}}' \ - | xargs -r docker "${docker_command}") || \ - cleanup_success=0 - done - # Remove the network. - docker network rm "${net}" || \ - cleanup_success=0 - done - - if ((!$cleanup_success)); then - echo "FAIL: Cleanup command failed" - exit 4 - fi -} -trap finish EXIT - -# Subnet for control packets between test bench and DUT. -while ! docker network create \ - "--subnet=${CTRL_NET_PREFIX}.0/${NET_MASK}" "${CTRL_NET}"; do - sleep 0.1 - CTRL_NET_PREFIX=$(new_net_prefix) - CTRL_NET="ctrl_net-${RANDOM}${RANDOM}" -done - -# Subnet for the packets that are part of the test. -while ! docker network create \ - "--subnet=${TEST_NET_PREFIX}.0/${NET_MASK}" "${TEST_NET}"; do - sleep 0.1 - TEST_NET_PREFIX=$(new_net_prefix) - TEST_NET="test_net-${RANDOM}${RANDOM}" -done - -docker pull "${IMAGE_TAG}" - -# Create the DUT container and connect to network. -DUT=$(docker create ${RUNTIME_ARG} --privileged --rm \ - --cap-add NET_ADMIN \ - --sysctl net.ipv6.conf.all.disable_ipv6=0 \ - --stop-timeout ${TIMEOUT} -it ${IMAGE_TAG}) -docker network connect "${CTRL_NET}" \ - --ip "${CTRL_NET_PREFIX}${DUT_NET_SUFFIX}" "${DUT}" \ - || (docker kill ${DUT}; docker rm ${DUT}; false) -docker network connect "${TEST_NET}" \ - --ip "${TEST_NET_PREFIX}${DUT_NET_SUFFIX}" "${DUT}" \ - || (docker kill ${DUT}; docker rm ${DUT}; false) -docker start "${DUT}" - -# Create the test bench container and connect to network. -TESTBENCH=$(docker create --privileged --rm \ - --cap-add NET_ADMIN \ - --sysctl net.ipv6.conf.all.disable_ipv6=0 \ - --stop-timeout ${TIMEOUT} -it ${IMAGE_TAG}) -docker network connect "${CTRL_NET}" \ - --ip "${CTRL_NET_PREFIX}${TESTBENCH_NET_SUFFIX}" "${TESTBENCH}" \ - || (docker kill ${TESTBENCH}; docker rm ${TESTBENCH}; false) -docker network connect "${TEST_NET}" \ - --ip "${TEST_NET_PREFIX}${TESTBENCH_NET_SUFFIX}" "${TESTBENCH}" \ - || (docker kill ${TESTBENCH}; docker rm ${TESTBENCH}; false) -docker start "${TESTBENCH}" - -# Start the posix_server in the DUT. -declare -r DOCKER_POSIX_SERVER_BINARY="/$(basename ${POSIX_SERVER_BINARY})" -docker cp -L ${POSIX_SERVER_BINARY} "${DUT}:${DOCKER_POSIX_SERVER_BINARY}" - -docker exec -t "${DUT}" \ - /bin/bash -c "${DOCKER_POSIX_SERVER_BINARY} \ - --ip ${CTRL_NET_PREFIX}${DUT_NET_SUFFIX} \ - --port ${CTRL_PORT}" & - -# Because the Linux kernel receives the SYN-ACK but didn't send the SYN it will -# issue a RST. To prevent this IPtables can be used to filter those out. -docker exec "${TESTBENCH}" \ - iptables -A INPUT -i ${TEST_DEVICE} -j DROP - -# Wait for the DUT server to come up. Attempt to connect to it from the test -# bench every 100 milliseconds until success. -while ! docker exec "${TESTBENCH}" \ - nc -zv "${CTRL_NET_PREFIX}${DUT_NET_SUFFIX}" "${CTRL_PORT}"; do - sleep 0.1 -done - -declare -r REMOTE_MAC=$(docker exec -t "${DUT}" ip link show \ - "${TEST_DEVICE}" | tail -1 | cut -d' ' -f6) -declare -r LOCAL_MAC=$(docker exec -t "${TESTBENCH}" ip link show \ - "${TEST_DEVICE}" | tail -1 | cut -d' ' -f6) -declare REMOTE_IPV6=$(docker exec -t "${DUT}" ip addr show scope link \ - "${TEST_DEVICE}" | grep inet6 | cut -d' ' -f6 | cut -d'/' -f1) -declare -r LOCAL_IPV6=$(docker exec -t "${TESTBENCH}" ip addr show scope link \ - "${TEST_DEVICE}" | grep inet6 | cut -d' ' -f6 | cut -d'/' -f1) - -# Netstack as DUT doesn't assign IPv6 addresses automatically so do it if -# needed. Convert the MAC address to an IPv6 link local address as described in -# RFC 4291 page 20: https://tools.ietf.org/html/rfc4291#page-20 -if [[ -z "${REMOTE_IPV6}" ]]; then - # Split the octets of the MAC into an array of strings. - IFS=":" read -a REMOTE_OCTETS <<< "${REMOTE_MAC}" - # Flip the global bit. - REMOTE_OCTETS[0]=$(printf '%x' "$((0x${REMOTE_OCTETS[0]} ^ 2))") - # Add the IPv6 address. - docker exec "${DUT}" \ - ip addr add $(printf 'fe80::%02x%02x:%02xff:fe%02x:%02x%02x/64' \ - "0x${REMOTE_OCTETS[0]}" "0x${REMOTE_OCTETS[1]}" "0x${REMOTE_OCTETS[2]}" \ - "0x${REMOTE_OCTETS[3]}" "0x${REMOTE_OCTETS[4]}" "0x${REMOTE_OCTETS[5]}") \ - scope link \ - dev "${TEST_DEVICE}" - # Re-extract the IPv6 address. - # TODO(eyalsoha): Add "scope link" below when netstack supports correctly - # creating link-local IPv6 addresses. - REMOTE_IPV6=$(docker exec -t "${DUT}" ip addr show \ - "${TEST_DEVICE}" | grep inet6 | cut -d' ' -f6 | cut -d'/' -f1) -fi - -declare -r DOCKER_TESTBENCH_BINARY="/$(basename ${TESTBENCH_BINARY})" -docker cp -L "${TESTBENCH_BINARY}" "${TESTBENCH}:${DOCKER_TESTBENCH_BINARY}" - -if [[ -z "${TSHARK-}" ]]; then - # Run tcpdump in the test bench unbuffered, without dns resolution, just on - # the interface with the test packets. - docker exec -t "${TESTBENCH}" \ - tcpdump -S -vvv -U -n -i "${TEST_DEVICE}" \ - net "${TEST_NET_PREFIX}/24" or \ - host "${REMOTE_IPV6}" or \ - host "${LOCAL_IPV6}" & -else - # Run tshark in the test bench unbuffered, without dns resolution, just on the - # interface with the test packets. - docker exec -t "${TESTBENCH}" \ - tshark -V -l -n -i "${TEST_DEVICE}" \ - -o tcp.check_checksum:TRUE \ - -o udp.check_checksum:TRUE \ - net "${TEST_NET_PREFIX}/24" or \ - host "${REMOTE_IPV6}" or \ - host "${LOCAL_IPV6}" & -fi - -# tcpdump and tshark take time to startup -sleep 3 - -# Start a packetimpact test on the test bench. The packetimpact test sends and -# receives packets and also sends POSIX socket commands to the posix_server to -# be executed on the DUT. -docker exec \ - -e XML_OUTPUT_FILE="/test.xml" \ - -e TEST_TARGET \ - -t "${TESTBENCH}" \ - /bin/bash -c "${DOCKER_TESTBENCH_BINARY} \ - ${EXTRA_TEST_ARGS[@]-} \ - --posix_server_ip=${CTRL_NET_PREFIX}${DUT_NET_SUFFIX} \ - --posix_server_port=${CTRL_PORT} \ - --remote_ipv4=${TEST_NET_PREFIX}${DUT_NET_SUFFIX} \ - --local_ipv4=${TEST_NET_PREFIX}${TESTBENCH_NET_SUFFIX} \ - --remote_ipv6=${REMOTE_IPV6} \ - --local_ipv6=${LOCAL_IPV6} \ - --remote_mac=${REMOTE_MAC} \ - --local_mac=${LOCAL_MAC} \ - --device=${TEST_DEVICE}" && true -declare -r TEST_RESULT="${?}" -if [[ -z "${EXPECT_FAILURE-}" && "${TEST_RESULT}" != 0 ]]; then - echo 'FAIL: This test was expected to pass.' - exit ${TEST_RESULT} -fi -if [[ ! -z "${EXPECT_FAILURE-}" && "${TEST_RESULT}" == 0 ]]; then - echo 'FAIL: This test was expected to fail but passed. Enable the test and' \ - 'mark the corresponding bug as fixed.' - exit 1 -fi -echo PASS: No errors. diff --git a/test/packetimpact/tests/udp_icmp_error_propagation_test.go b/test/packetimpact/tests/udp_icmp_error_propagation_test.go deleted file mode 100644 index 66f64eaa2..000000000 --- a/test/packetimpact/tests/udp_icmp_error_propagation_test.go +++ /dev/null @@ -1,253 +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 udp_icmp_error_propagation_test - -import ( - "context" - "fmt" - "net" - "syscall" - "testing" - "time" - - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/tcpip/header" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -type connectionMode bool - -func (c connectionMode) String() string { - if c { - return "Connected" - } - return "Connectionless" -} - -type icmpError int - -const ( - portUnreachable icmpError = iota - timeToLiveExceeded -) - -func (e icmpError) String() string { - switch e { - case portUnreachable: - return "PortUnreachable" - case timeToLiveExceeded: - return "TimeToLiveExpired" - } - return "Unknown ICMP error" -} - -func (e icmpError) ToICMPv4() *tb.ICMPv4 { - switch e { - case portUnreachable: - return &tb.ICMPv4{Type: tb.ICMPv4Type(header.ICMPv4DstUnreachable), Code: tb.Uint8(header.ICMPv4PortUnreachable)} - case timeToLiveExceeded: - return &tb.ICMPv4{Type: tb.ICMPv4Type(header.ICMPv4TimeExceeded), Code: tb.Uint8(header.ICMPv4TTLExceeded)} - } - return nil -} - -type errorDetection struct { - name string - useValidConn bool - f func(context.Context, testData) error -} - -type testData struct { - dut *tb.DUT - conn *tb.UDPIPv4 - remoteFD int32 - remotePort uint16 - cleanFD int32 - cleanPort uint16 - wantErrno syscall.Errno -} - -// testRecv tests observing the ICMP error through the recv syscall. A packet -// is sent to the DUT, and if wantErrno is non-zero, then the first recv should -// fail and the second should succeed. Otherwise if wantErrno is zero then the -// first recv should succeed immediately. -func testRecv(ctx context.Context, d testData) error { - // Check that receiving on the clean socket works. - d.conn.Send(tb.UDP{DstPort: &d.cleanPort}) - d.dut.Recv(d.cleanFD, 100, 0) - - d.conn.Send(tb.UDP{}) - - if d.wantErrno != syscall.Errno(0) { - ctx, cancel := context.WithTimeout(ctx, time.Second) - defer cancel() - ret, _, err := d.dut.RecvWithErrno(ctx, d.remoteFD, 100, 0) - if ret != -1 { - return fmt.Errorf("recv after ICMP error succeeded unexpectedly, expected (%[1]d) %[1]v", d.wantErrno) - } - if err != d.wantErrno { - return fmt.Errorf("recv after ICMP error resulted in error (%[1]d) %[1]v, expected (%[2]d) %[2]v", err, d.wantErrno) - } - } - - d.dut.Recv(d.remoteFD, 100, 0) - return nil -} - -// testSendTo tests observing the ICMP error through the send syscall. If -// wantErrno is non-zero, the first send should fail and a subsequent send -// should suceed; while if wantErrno is zero then the first send should just -// succeed. -func testSendTo(ctx context.Context, d testData) error { - // Check that sending on the clean socket works. - d.dut.SendTo(d.cleanFD, nil, 0, d.conn.LocalAddr()) - if _, err := d.conn.Expect(tb.UDP{SrcPort: &d.cleanPort}, time.Second); err != nil { - return fmt.Errorf("did not receive UDP packet from clean socket on DUT: %s", err) - } - - if d.wantErrno != syscall.Errno(0) { - ctx, cancel := context.WithTimeout(ctx, time.Second) - defer cancel() - ret, err := d.dut.SendToWithErrno(ctx, d.remoteFD, nil, 0, d.conn.LocalAddr()) - - if ret != -1 { - return fmt.Errorf("sendto after ICMP error succeeded unexpectedly, expected (%[1]d) %[1]v", d.wantErrno) - } - if err != d.wantErrno { - return fmt.Errorf("sendto after ICMP error resulted in error (%[1]d) %[1]v, expected (%[2]d) %[2]v", err, d.wantErrno) - } - } - - d.dut.SendTo(d.remoteFD, nil, 0, d.conn.LocalAddr()) - if _, err := d.conn.Expect(tb.UDP{}, time.Second); err != nil { - return fmt.Errorf("did not receive UDP packet as expected: %s", err) - } - return nil -} - -func testSockOpt(_ context.Context, d testData) error { - // Check that there's no pending error on the clean socket. - if errno := syscall.Errno(d.dut.GetSockOptInt(d.cleanFD, unix.SOL_SOCKET, unix.SO_ERROR)); errno != syscall.Errno(0) { - return fmt.Errorf("unexpected error (%[1]d) %[1]v on clean socket", errno) - } - - if errno := syscall.Errno(d.dut.GetSockOptInt(d.remoteFD, unix.SOL_SOCKET, unix.SO_ERROR)); errno != d.wantErrno { - return fmt.Errorf("SO_ERROR sockopt after ICMP error is (%[1]d) %[1]v, expected (%[2]d) %[2]v", errno, d.wantErrno) - } - - // Check that after clearing socket error, sending doesn't fail. - d.dut.SendTo(d.remoteFD, nil, 0, d.conn.LocalAddr()) - if _, err := d.conn.Expect(tb.UDP{}, time.Second); err != nil { - return fmt.Errorf("did not receive UDP packet as expected: %s", err) - } - return nil -} - -// TestUDPICMPErrorPropagation tests that ICMP error messages in response to -// UDP datagrams are processed correctly. RFC 1122 section 4.1.3.3 states that: -// "UDP MUST pass to the application layer all ICMP error messages that it -// receives from the IP layer." -// -// The test cases are parametrized in 3 dimensions: 1. the UDP socket is either -// put into connection mode or left connectionless, 2. the ICMP message type -// and code, and 3. the method by which the ICMP error is observed on the -// socket: sendto, recv, or getsockopt(SO_ERROR). -// -// Linux's udp(7) man page states: "All fatal errors will be passed to the user -// as an error return even when the socket is not connected. This includes -// asynchronous errors received from the network." In practice, the only -// combination of parameters to the test that causes an error to be observable -// on the UDP socket is receiving a port unreachable message on a connected -// socket. -func TestUDPICMPErrorPropagation(t *testing.T) { - for _, connect := range []connectionMode{true, false} { - for _, icmpErr := range []icmpError{portUnreachable, timeToLiveExceeded} { - wantErrno := syscall.Errno(0) - if connect && icmpErr == portUnreachable { - wantErrno = unix.ECONNREFUSED - } - for _, errDetect := range []errorDetection{ - errorDetection{"SendTo", false, testSendTo}, - // Send to an address that's different from the one that caused an ICMP - // error to be returned. - errorDetection{"SendToValid", true, testSendTo}, - errorDetection{"Recv", false, testRecv}, - errorDetection{"SockOpt", false, testSockOpt}, - } { - t.Run(fmt.Sprintf("%s/%s/%s", connect, icmpErr, errDetect.name), func(t *testing.T) { - dut := tb.NewDUT(t) - defer dut.TearDown() - - remoteFD, remotePort := dut.CreateBoundSocket(unix.SOCK_DGRAM, unix.IPPROTO_UDP, net.ParseIP("0.0.0.0")) - defer dut.Close(remoteFD) - - // Create a second, clean socket on the DUT to ensure that the ICMP - // error messages only affect the sockets they are intended for. - cleanFD, cleanPort := dut.CreateBoundSocket(unix.SOCK_DGRAM, unix.IPPROTO_UDP, net.ParseIP("0.0.0.0")) - defer dut.Close(cleanFD) - - conn := tb.NewUDPIPv4(t, tb.UDP{DstPort: &remotePort}, tb.UDP{SrcPort: &remotePort}) - defer conn.Close() - - if connect { - dut.Connect(remoteFD, conn.LocalAddr()) - dut.Connect(cleanFD, conn.LocalAddr()) - } - - dut.SendTo(remoteFD, nil, 0, conn.LocalAddr()) - udp, err := conn.Expect(tb.UDP{}, time.Second) - if err != nil { - t.Fatalf("did not receive message from DUT: %s", err) - } - - if icmpErr == timeToLiveExceeded { - ip, ok := udp.Prev().(*tb.IPv4) - if !ok { - t.Fatalf("expected %s to be IPv4", udp.Prev()) - } - *ip.TTL = 1 - // Let serialization recalculate the checksum since we set the TTL - // to 1. - ip.Checksum = nil - - // Note that the ICMP payload is valid in this case because the UDP - // payload is empty. If the UDP payload were not empty, the packet - // length during serialization may not be calculated correctly, - // resulting in a mal-formed packet. - conn.SendIP(icmpErr.ToICMPv4(), ip, udp) - } else { - conn.SendIP(icmpErr.ToICMPv4(), udp.Prev(), udp) - } - - errDetectConn := &conn - if errDetect.useValidConn { - // connClean is a UDP socket on the test runner that was not - // involved in the generation of the ICMP error. As such, - // interactions between it and the the DUT should be independent of - // the ICMP error at least at the port level. - connClean := tb.NewUDPIPv4(t, tb.UDP{DstPort: &remotePort}, tb.UDP{SrcPort: &remotePort}) - defer connClean.Close() - - errDetectConn = &connClean - } - - if err := errDetect.f(context.Background(), testData{&dut, errDetectConn, remoteFD, remotePort, cleanFD, cleanPort, wantErrno}); err != nil { - t.Fatal(err) - } - }) - } - } - } -} diff --git a/test/packetimpact/tests/udp_recv_multicast_test.go b/test/packetimpact/tests/udp_recv_multicast_test.go deleted file mode 100644 index 61fd17050..000000000 --- a/test/packetimpact/tests/udp_recv_multicast_test.go +++ /dev/null @@ -1,37 +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 udp_recv_multicast_test - -import ( - "net" - "testing" - - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/tcpip" - tb "gvisor.dev/gvisor/test/packetimpact/testbench" -) - -func TestUDPRecvMulticast(t *testing.T) { - dut := tb.NewDUT(t) - defer dut.TearDown() - boundFD, remotePort := dut.CreateBoundSocket(unix.SOCK_DGRAM, unix.IPPROTO_UDP, net.ParseIP("0.0.0.0")) - defer dut.Close(boundFD) - conn := tb.NewUDPIPv4(t, tb.UDP{DstPort: &remotePort}, tb.UDP{SrcPort: &remotePort}) - defer conn.Close() - frame := conn.CreateFrame(&tb.UDP{}, &tb.Payload{Bytes: []byte("hello world")}) - frame[1].(*tb.IPv4).DstAddr = tb.Address(tcpip.Address(net.ParseIP("224.0.0.1").To4())) - conn.SendFrame(frame) - dut.Recv(boundFD, 100, 0) -} |