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-rw-r--r--pkg/tcpip/transport/tcp/dual_stack_test.go8
-rw-r--r--pkg/tcpip/transport/tcp/endpoint.go119
-rw-r--r--pkg/tcpip/transport/tcp/tcp_test.go49
-rw-r--r--pkg/tcpip/transport/tcp/testing/context/context.go16
4 files changed, 98 insertions, 94 deletions
diff --git a/pkg/tcpip/transport/tcp/dual_stack_test.go b/pkg/tcpip/transport/tcp/dual_stack_test.go
index dfaa4a559..4f361b226 100644
--- a/pkg/tcpip/transport/tcp/dual_stack_test.go
+++ b/pkg/tcpip/transport/tcp/dual_stack_test.go
@@ -391,9 +391,8 @@ func testV4Accept(t *testing.T, c *context.Context) {
// Make sure we get the same error when calling the original ep and the
// new one. This validates that v4-mapped endpoints are still able to
// query the V6Only flag, whereas pure v4 endpoints are not.
- var v tcpip.V6OnlyOption
- expected := c.EP.GetSockOpt(&v)
- if err := nep.GetSockOpt(&v); err != expected {
+ _, expected := c.EP.GetSockOptBool(tcpip.V6OnlyOption)
+ if _, err := nep.GetSockOptBool(tcpip.V6OnlyOption); err != expected {
t.Fatalf("GetSockOpt returned unexpected value: got %v, want %v", err, expected)
}
@@ -531,8 +530,7 @@ func TestV6AcceptOnV6(t *testing.T) {
// Make sure we can still query the v6 only status of the new endpoint,
// that is, that it is in fact a v6 socket.
- var v tcpip.V6OnlyOption
- if err := nep.GetSockOpt(&v); err != nil {
+ if _, err := nep.GetSockOptBool(tcpip.V6OnlyOption); err != nil {
t.Fatalf("GetSockOpt failed failed: %v", err)
}
diff --git a/pkg/tcpip/transport/tcp/endpoint.go b/pkg/tcpip/transport/tcp/endpoint.go
index dd8b47cbe..920b24975 100644
--- a/pkg/tcpip/transport/tcp/endpoint.go
+++ b/pkg/tcpip/transport/tcp/endpoint.go
@@ -1145,8 +1145,31 @@ func (e *endpoint) zeroReceiveWindow(scale uint8) bool {
return ((e.rcvBufSize - e.rcvBufUsed) >> scale) == 0
}
+// SetSockOptBool sets a socket option.
+func (e *endpoint) SetSockOptBool(opt tcpip.SockOptBool, v bool) *tcpip.Error {
+ switch opt {
+ case tcpip.V6OnlyOption:
+ // We only recognize this option on v6 endpoints.
+ if e.NetProto != header.IPv6ProtocolNumber {
+ return tcpip.ErrInvalidEndpointState
+ }
+
+ e.mu.Lock()
+ defer e.mu.Unlock()
+
+ // We only allow this to be set when we're in the initial state.
+ if e.state != StateInitial {
+ return tcpip.ErrInvalidEndpointState
+ }
+
+ e.v6only = v
+ }
+
+ return nil
+}
+
// SetSockOptInt sets a socket option.
-func (e *endpoint) SetSockOptInt(opt tcpip.SockOpt, v int) *tcpip.Error {
+func (e *endpoint) SetSockOptInt(opt tcpip.SockOptInt, v int) *tcpip.Error {
switch opt {
case tcpip.ReceiveBufferSizeOption:
// Make sure the receive buffer size is within the min and max
@@ -1256,19 +1279,14 @@ func (e *endpoint) SetSockOpt(opt interface{}) *tcpip.Error {
return nil
case tcpip.BindToDeviceOption:
- e.mu.Lock()
- defer e.mu.Unlock()
- if v == "" {
- e.bindToDevice = 0
- return nil
- }
- for nicID, nic := range e.stack.NICInfo() {
- if nic.Name == string(v) {
- e.bindToDevice = nicID
- return nil
- }
+ id := tcpip.NICID(v)
+ if id != 0 && !e.stack.HasNIC(id) {
+ return tcpip.ErrUnknownDevice
}
- return tcpip.ErrUnknownDevice
+ e.mu.Lock()
+ e.bindToDevice = id
+ e.mu.Unlock()
+ return nil
case tcpip.QuickAckOption:
if v == 0 {
@@ -1289,23 +1307,6 @@ func (e *endpoint) SetSockOpt(opt interface{}) *tcpip.Error {
e.notifyProtocolGoroutine(notifyMSSChanged)
return nil
- case tcpip.V6OnlyOption:
- // We only recognize this option on v6 endpoints.
- if e.NetProto != header.IPv6ProtocolNumber {
- return tcpip.ErrInvalidEndpointState
- }
-
- e.mu.Lock()
- defer e.mu.Unlock()
-
- // We only allow this to be set when we're in the initial state.
- if e.state != StateInitial {
- return tcpip.ErrInvalidEndpointState
- }
-
- e.v6only = v != 0
- return nil
-
case tcpip.TTLOption:
e.mu.Lock()
e.ttl = uint8(v)
@@ -1446,8 +1447,27 @@ func (e *endpoint) readyReceiveSize() (int, *tcpip.Error) {
return e.rcvBufUsed, nil
}
+// GetSockOptBool implements tcpip.Endpoint.GetSockOptBool.
+func (e *endpoint) GetSockOptBool(opt tcpip.SockOptBool) (bool, *tcpip.Error) {
+ switch opt {
+ case tcpip.V6OnlyOption:
+ // We only recognize this option on v6 endpoints.
+ if e.NetProto != header.IPv6ProtocolNumber {
+ return false, tcpip.ErrUnknownProtocolOption
+ }
+
+ e.mu.Lock()
+ v := e.v6only
+ e.mu.Unlock()
+
+ return v, nil
+ }
+
+ return false, tcpip.ErrUnknownProtocolOption
+}
+
// GetSockOptInt implements tcpip.Endpoint.GetSockOptInt.
-func (e *endpoint) GetSockOptInt(opt tcpip.SockOpt) (int, *tcpip.Error) {
+func (e *endpoint) GetSockOptInt(opt tcpip.SockOptInt) (int, *tcpip.Error) {
switch opt {
case tcpip.ReceiveQueueSizeOption:
return e.readyReceiveSize()
@@ -1525,12 +1545,8 @@ func (e *endpoint) GetSockOpt(opt interface{}) *tcpip.Error {
case *tcpip.BindToDeviceOption:
e.mu.RLock()
- defer e.mu.RUnlock()
- if nic, ok := e.stack.NICInfo()[e.bindToDevice]; ok {
- *o = tcpip.BindToDeviceOption(nic.Name)
- return nil
- }
- *o = ""
+ *o = tcpip.BindToDeviceOption(e.bindToDevice)
+ e.mu.RUnlock()
return nil
case *tcpip.QuickAckOption:
@@ -1540,22 +1556,6 @@ func (e *endpoint) GetSockOpt(opt interface{}) *tcpip.Error {
}
return nil
- case *tcpip.V6OnlyOption:
- // We only recognize this option on v6 endpoints.
- if e.NetProto != header.IPv6ProtocolNumber {
- return tcpip.ErrUnknownProtocolOption
- }
-
- e.mu.Lock()
- v := e.v6only
- e.mu.Unlock()
-
- *o = 0
- if v {
- *o = 1
- }
- return nil
-
case *tcpip.TTLOption:
e.mu.Lock()
*o = tcpip.TTLOption(e.ttl)
@@ -1974,6 +1974,15 @@ func (e *endpoint) listen(backlog int) *tcpip.Error {
return nil
}
+ if e.state == StateInitial {
+ // The listen is called on an unbound socket, the socket is
+ // automatically bound to a random free port with the local
+ // address set to INADDR_ANY.
+ if err := e.bindLocked(tcpip.FullAddress{}); err != nil {
+ return err
+ }
+ }
+
// Endpoint must be bound before it can transition to listen mode.
if e.state != StateBound {
e.stats.ReadErrors.InvalidEndpointState.Increment()
@@ -2033,6 +2042,10 @@ func (e *endpoint) Bind(addr tcpip.FullAddress) (err *tcpip.Error) {
e.mu.Lock()
defer e.mu.Unlock()
+ return e.bindLocked(addr)
+}
+
+func (e *endpoint) bindLocked(addr tcpip.FullAddress) (err *tcpip.Error) {
// Don't allow binding once endpoint is not in the initial state
// anymore. This is because once the endpoint goes into a connected or
// listen state, it is already bound.
diff --git a/pkg/tcpip/transport/tcp/tcp_test.go b/pkg/tcpip/transport/tcp/tcp_test.go
index e8fe4dab5..1aa0733d0 100644
--- a/pkg/tcpip/transport/tcp/tcp_test.go
+++ b/pkg/tcpip/transport/tcp/tcp_test.go
@@ -1083,12 +1083,12 @@ func TestTrafficClassV6(t *testing.T) {
func TestConnectBindToDevice(t *testing.T) {
for _, test := range []struct {
name string
- device string
+ device tcpip.NICID
want tcp.EndpointState
}{
- {"RightDevice", "nic1", tcp.StateEstablished},
- {"WrongDevice", "nic2", tcp.StateSynSent},
- {"AnyDevice", "", tcp.StateEstablished},
+ {"RightDevice", 1, tcp.StateEstablished},
+ {"WrongDevice", 2, tcp.StateSynSent},
+ {"AnyDevice", 0, tcp.StateEstablished},
} {
t.Run(test.name, func(t *testing.T) {
c := context.New(t, defaultMTU)
@@ -3794,46 +3794,41 @@ func TestBindToDeviceOption(t *testing.T) {
}
defer ep.Close()
- if err := s.CreateNamedNIC(321, "my_device", loopback.New()); err != nil {
- t.Errorf("CreateNamedNIC failed: %v", err)
- }
-
- // Make an nameless NIC.
- if err := s.CreateNIC(54321, loopback.New()); err != nil {
+ if err := s.CreateNIC(321, loopback.New()); err != nil {
t.Errorf("CreateNIC failed: %v", err)
}
- // strPtr is used instead of taking the address of string literals, which is
+ // nicIDPtr is used instead of taking the address of NICID literals, which is
// a compiler error.
- strPtr := func(s string) *string {
+ nicIDPtr := func(s tcpip.NICID) *tcpip.NICID {
return &s
}
testActions := []struct {
name string
- setBindToDevice *string
+ setBindToDevice *tcpip.NICID
setBindToDeviceError *tcpip.Error
getBindToDevice tcpip.BindToDeviceOption
}{
- {"GetDefaultValue", nil, nil, ""},
- {"BindToNonExistent", strPtr("non_existent_device"), tcpip.ErrUnknownDevice, ""},
- {"BindToExistent", strPtr("my_device"), nil, "my_device"},
- {"UnbindToDevice", strPtr(""), nil, ""},
+ {"GetDefaultValue", nil, nil, 0},
+ {"BindToNonExistent", nicIDPtr(999), tcpip.ErrUnknownDevice, 0},
+ {"BindToExistent", nicIDPtr(321), nil, 321},
+ {"UnbindToDevice", nicIDPtr(0), nil, 0},
}
for _, testAction := range testActions {
t.Run(testAction.name, func(t *testing.T) {
if testAction.setBindToDevice != nil {
bindToDevice := tcpip.BindToDeviceOption(*testAction.setBindToDevice)
- if got, want := ep.SetSockOpt(bindToDevice), testAction.setBindToDeviceError; got != want {
- t.Errorf("SetSockOpt(%v) got %v, want %v", bindToDevice, got, want)
+ if gotErr, wantErr := ep.SetSockOpt(bindToDevice), testAction.setBindToDeviceError; gotErr != wantErr {
+ t.Errorf("SetSockOpt(%v) got %v, want %v", bindToDevice, gotErr, wantErr)
}
}
- bindToDevice := tcpip.BindToDeviceOption("to be modified by GetSockOpt")
- if ep.GetSockOpt(&bindToDevice) != nil {
- t.Errorf("GetSockOpt got %v, want %v", ep.GetSockOpt(&bindToDevice), nil)
+ bindToDevice := tcpip.BindToDeviceOption(88888)
+ if err := ep.GetSockOpt(&bindToDevice); err != nil {
+ t.Errorf("GetSockOpt got %v, want %v", err, nil)
}
if got, want := bindToDevice, testAction.getBindToDevice; got != want {
- t.Errorf("bindToDevice got %q, want %q", got, want)
+ t.Errorf("bindToDevice got %d, want %d", got, want)
}
})
}
@@ -4027,12 +4022,12 @@ func TestConnectAvoidsBoundPorts(t *testing.T) {
switch network {
case "ipv4":
case "ipv6":
- if err := ep.SetSockOpt(tcpip.V6OnlyOption(1)); err != nil {
- t.Fatalf("SetSockOpt(V6OnlyOption(1)) failed: %v", err)
+ if err := ep.SetSockOptBool(tcpip.V6OnlyOption, true); err != nil {
+ t.Fatalf("SetSockOpt(V6OnlyOption(true)) failed: %v", err)
}
case "dual":
- if err := ep.SetSockOpt(tcpip.V6OnlyOption(0)); err != nil {
- t.Fatalf("SetSockOpt(V6OnlyOption(0)) failed: %v", err)
+ if err := ep.SetSockOptBool(tcpip.V6OnlyOption, false); err != nil {
+ t.Fatalf("SetSockOpt(V6OnlyOption(false)) failed: %v", err)
}
default:
t.Fatalf("unknown network: '%s'", network)
diff --git a/pkg/tcpip/transport/tcp/testing/context/context.go b/pkg/tcpip/transport/tcp/testing/context/context.go
index b0a376eba..822907998 100644
--- a/pkg/tcpip/transport/tcp/testing/context/context.go
+++ b/pkg/tcpip/transport/tcp/testing/context/context.go
@@ -158,15 +158,17 @@ func New(t *testing.T, mtu uint32) *Context {
if testing.Verbose() {
wep = sniffer.New(ep)
}
- if err := s.CreateNamedNIC(1, "nic1", wep); err != nil {
- t.Fatalf("CreateNIC failed: %v", err)
+ opts := stack.NICOptions{Name: "nic1"}
+ if err := s.CreateNICWithOptions(1, wep, opts); err != nil {
+ t.Fatalf("CreateNICWithOptions(_, _, %+v) failed: %v", opts, err)
}
wep2 := stack.LinkEndpoint(channel.New(1000, mtu, ""))
if testing.Verbose() {
wep2 = sniffer.New(channel.New(1000, mtu, ""))
}
- if err := s.CreateNamedNIC(2, "nic2", wep2); err != nil {
- t.Fatalf("CreateNIC failed: %v", err)
+ opts2 := stack.NICOptions{Name: "nic2"}
+ if err := s.CreateNICWithOptions(2, wep2, opts2); err != nil {
+ t.Fatalf("CreateNICWithOptions(_, _, %+v) failed: %v", opts2, err)
}
if err := s.AddAddress(1, ipv4.ProtocolNumber, StackAddr); err != nil {
@@ -473,11 +475,7 @@ func (c *Context) CreateV6Endpoint(v6only bool) {
c.t.Fatalf("NewEndpoint failed: %v", err)
}
- var v tcpip.V6OnlyOption
- if v6only {
- v = 1
- }
- if err := c.EP.SetSockOpt(v); err != nil {
+ if err := c.EP.SetSockOptBool(tcpip.V6OnlyOption, v6only); err != nil {
c.t.Fatalf("SetSockOpt failed failed: %v", err)
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 06:14:30 +0000