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-rw-r--r--pkg/tcpip/tests/integration/BUILD6
-rw-r--r--pkg/tcpip/tests/integration/loopback_test.go229
-rw-r--r--pkg/tcpip/tests/integration/multicast_broadcast_test.go2
3 files changed, 235 insertions, 2 deletions
diff --git a/pkg/tcpip/tests/integration/BUILD b/pkg/tcpip/tests/integration/BUILD
index 6d52af98a..06c7a3cd3 100644
--- a/pkg/tcpip/tests/integration/BUILD
+++ b/pkg/tcpip/tests/integration/BUILD
@@ -5,12 +5,16 @@ package(licenses = ["notice"])
go_test(
name = "integration_test",
size = "small",
- srcs = ["multicast_broadcast_test.go"],
+ srcs = [
+ "loopback_test.go",
+ "multicast_broadcast_test.go",
+ ],
deps = [
"//pkg/tcpip",
"//pkg/tcpip/buffer",
"//pkg/tcpip/header",
"//pkg/tcpip/link/channel",
+ "//pkg/tcpip/link/loopback",
"//pkg/tcpip/network/ipv4",
"//pkg/tcpip/network/ipv6",
"//pkg/tcpip/stack",
diff --git a/pkg/tcpip/tests/integration/loopback_test.go b/pkg/tcpip/tests/integration/loopback_test.go
new file mode 100644
index 000000000..3a2f75837
--- /dev/null
+++ b/pkg/tcpip/tests/integration/loopback_test.go
@@ -0,0 +1,229 @@
+// 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 integration_test
+
+import (
+ "testing"
+
+ "github.com/google/go-cmp/cmp"
+ "gvisor.dev/gvisor/pkg/tcpip"
+ "gvisor.dev/gvisor/pkg/tcpip/buffer"
+ "gvisor.dev/gvisor/pkg/tcpip/header"
+ "gvisor.dev/gvisor/pkg/tcpip/link/loopback"
+ "gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
+ "gvisor.dev/gvisor/pkg/tcpip/network/ipv6"
+ "gvisor.dev/gvisor/pkg/tcpip/stack"
+ "gvisor.dev/gvisor/pkg/tcpip/transport/udp"
+ "gvisor.dev/gvisor/pkg/waiter"
+)
+
+// TestLoopbackAcceptAllInSubnet tests that a loopback interface considers
+// itself bound to all addresses in the subnet of an assigned address.
+func TestLoopbackAcceptAllInSubnet(t *testing.T) {
+ const (
+ nicID = 1
+ localPort = 80
+ )
+
+ data := []byte{1, 2, 3, 4}
+
+ ipv4ProtocolAddress := tcpip.ProtocolAddress{
+ Protocol: header.IPv4ProtocolNumber,
+ AddressWithPrefix: ipv4Addr,
+ }
+ ipv4Bytes := []byte(ipv4Addr.Address)
+ ipv4Bytes[len(ipv4Bytes)-1]++
+ otherIPv4Address := tcpip.Address(ipv4Bytes)
+
+ ipv6ProtocolAddress := tcpip.ProtocolAddress{
+ Protocol: header.IPv6ProtocolNumber,
+ AddressWithPrefix: ipv6Addr,
+ }
+ ipv6Bytes := []byte(ipv6Addr.Address)
+ ipv6Bytes[len(ipv6Bytes)-1]++
+ otherIPv6Address := tcpip.Address(ipv6Bytes)
+
+ tests := []struct {
+ name string
+ addAddress tcpip.ProtocolAddress
+ bindAddr tcpip.Address
+ dstAddr tcpip.Address
+ expectRx bool
+ }{
+ {
+ name: "IPv4 bind to wildcard and send to assigned address",
+ addAddress: ipv4ProtocolAddress,
+ dstAddr: ipv4Addr.Address,
+ expectRx: true,
+ },
+ {
+ name: "IPv4 bind to wildcard and send to other subnet-local address",
+ addAddress: ipv4ProtocolAddress,
+ dstAddr: otherIPv4Address,
+ expectRx: true,
+ },
+ {
+ name: "IPv4 bind to wildcard send to other address",
+ addAddress: ipv4ProtocolAddress,
+ dstAddr: remoteIPv4Addr,
+ expectRx: false,
+ },
+ {
+ name: "IPv4 bind to other subnet-local address and send to assigned address",
+ addAddress: ipv4ProtocolAddress,
+ bindAddr: otherIPv4Address,
+ dstAddr: ipv4Addr.Address,
+ expectRx: false,
+ },
+ {
+ name: "IPv4 bind and send to other subnet-local address",
+ addAddress: ipv4ProtocolAddress,
+ bindAddr: otherIPv4Address,
+ dstAddr: otherIPv4Address,
+ expectRx: true,
+ },
+ {
+ name: "IPv4 bind to assigned address and send to other subnet-local address",
+ addAddress: ipv4ProtocolAddress,
+ bindAddr: ipv4Addr.Address,
+ dstAddr: otherIPv4Address,
+ expectRx: false,
+ },
+
+ {
+ name: "IPv6 bind and send to assigned address",
+ addAddress: ipv6ProtocolAddress,
+ bindAddr: ipv6Addr.Address,
+ dstAddr: ipv6Addr.Address,
+ expectRx: true,
+ },
+ {
+ name: "IPv6 bind to wildcard and send to assigned address",
+ addAddress: ipv6ProtocolAddress,
+ dstAddr: ipv6Addr.Address,
+ expectRx: true,
+ },
+ {
+ name: "IPv6 bind to wildcard and send to other subnet-local address",
+ addAddress: ipv6ProtocolAddress,
+ dstAddr: otherIPv6Address,
+ expectRx: true,
+ },
+ {
+ name: "IPv6 bind to wildcard send to other address",
+ addAddress: ipv6ProtocolAddress,
+ dstAddr: remoteIPv6Addr,
+ expectRx: false,
+ },
+ {
+ name: "IPv6 bind to other subnet-local address and send to assigned address",
+ addAddress: ipv6ProtocolAddress,
+ bindAddr: otherIPv6Address,
+ dstAddr: ipv6Addr.Address,
+ expectRx: false,
+ },
+ {
+ name: "IPv6 bind and send to other subnet-local address",
+ addAddress: ipv6ProtocolAddress,
+ bindAddr: otherIPv6Address,
+ dstAddr: otherIPv6Address,
+ expectRx: true,
+ },
+ {
+ name: "IPv6 bind to assigned address and send to other subnet-local address",
+ addAddress: ipv6ProtocolAddress,
+ bindAddr: ipv6Addr.Address,
+ dstAddr: otherIPv6Address,
+ expectRx: false,
+ },
+ {
+ name: "IPv6 bind and send to assigned address",
+ addAddress: ipv6ProtocolAddress,
+ bindAddr: ipv6Addr.Address,
+ dstAddr: ipv6Addr.Address,
+ expectRx: true,
+ },
+ }
+
+ for _, test := range tests {
+ t.Run(test.name, func(t *testing.T) {
+ s := stack.New(stack.Options{
+ NetworkProtocols: []stack.NetworkProtocol{ipv4.NewProtocol(), ipv6.NewProtocol()},
+ TransportProtocols: []stack.TransportProtocol{udp.NewProtocol()},
+ })
+ if err := s.CreateNIC(nicID, loopback.New()); err != nil {
+ t.Fatalf("CreateNIC(%d, _): %s", nicID, err)
+ }
+ if err := s.AddProtocolAddress(nicID, test.addAddress); err != nil {
+ t.Fatalf("AddProtocolAddress(%d, %+v): %s", nicID, test.addAddress, err)
+ }
+ s.SetRouteTable([]tcpip.Route{
+ tcpip.Route{
+ Destination: header.IPv4EmptySubnet,
+ NIC: nicID,
+ },
+ tcpip.Route{
+ Destination: header.IPv6EmptySubnet,
+ NIC: nicID,
+ },
+ })
+
+ wq := waiter.Queue{}
+ rep, err := s.NewEndpoint(udp.ProtocolNumber, test.addAddress.Protocol, &wq)
+ if err != nil {
+ t.Fatalf("NewEndpoint(%d, %d, _): %s", udp.ProtocolNumber, test.addAddress.Protocol, err)
+ }
+ defer rep.Close()
+
+ bindAddr := tcpip.FullAddress{Addr: test.bindAddr, Port: localPort}
+ if err := rep.Bind(bindAddr); err != nil {
+ t.Fatalf("rep.Bind(%+v): %s", bindAddr, err)
+ }
+
+ sep, err := s.NewEndpoint(udp.ProtocolNumber, test.addAddress.Protocol, &wq)
+ if err != nil {
+ t.Fatalf("NewEndpoint(%d, %d, _): %s", udp.ProtocolNumber, test.addAddress.Protocol, err)
+ }
+ defer sep.Close()
+
+ wopts := tcpip.WriteOptions{
+ To: &tcpip.FullAddress{
+ Addr: test.dstAddr,
+ Port: localPort,
+ },
+ }
+ n, _, err := sep.Write(tcpip.SlicePayload(data), wopts)
+ if err != nil {
+ t.Fatalf("sep.Write(_, _): %s", err)
+ }
+ if want := int64(len(data)); n != want {
+ t.Fatalf("got sep.Write(_, _) = (%d, _, nil), want = (%d, _, nil)", n, want)
+ }
+
+ if gotPayload, _, err := rep.Read(nil); test.expectRx {
+ if err != nil {
+ t.Fatalf("reep.Read(nil): %s", err)
+ }
+ if diff := cmp.Diff(buffer.View(data), gotPayload); diff != "" {
+ t.Errorf("got UDP payload mismatch (-want +got):\n%s", diff)
+ }
+ } else {
+ if err != tcpip.ErrWouldBlock {
+ t.Fatalf("got rep.Read(nil) = (%x, _, %s), want = (_, _, %s)", gotPayload, err, tcpip.ErrWouldBlock)
+ }
+ }
+ })
+ }
+}
diff --git a/pkg/tcpip/tests/integration/multicast_broadcast_test.go b/pkg/tcpip/tests/integration/multicast_broadcast_test.go
index 9f0dd4d6d..52c27e045 100644
--- a/pkg/tcpip/tests/integration/multicast_broadcast_test.go
+++ b/pkg/tcpip/tests/integration/multicast_broadcast_test.go
@@ -430,7 +430,7 @@ func TestIncomingMulticastAndBroadcast(t *testing.T) {
}
} else {
if err != tcpip.ErrWouldBlock {
- t.Fatalf("got Read(nil) = (%x, _, %v), want = (_, _, %s)", gotPayload, err, tcpip.ErrWouldBlock)
+ t.Fatalf("got Read(nil) = (%x, _, %s), want = (_, _, %s)", gotPayload, err, tcpip.ErrWouldBlock)
}
}
})
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 07:49:25 +0000