6 files changed, 17 insertions, 17 deletions
diff --git a/pkg/tcpip/transport/icmp/endpoint.go b/pkg/tcpip/transport/icmp/endpoint.go
index 94fcd72d9..80c01f2cb 100644
--- a/pkg/tcpip/transport/icmp/endpoint.go
+++ b/pkg/tcpip/transport/icmp/endpoint.go
@@ -332,8 +332,8 @@ func (e *endpoint) write(p tcpip.Payloader, opts tcpip.WriteOptions) (int64, <-c
 }
 
 // Peek only returns data from a single datagram, so do nothing here.
-func (e *endpoint) Peek([][]byte) (int64, tcpip.ControlMessages, *tcpip.Error) {
-	return 0, tcpip.ControlMessages{}, nil
+func (e *endpoint) Peek([][]byte) (int64, *tcpip.Error) {
+	return 0, nil
 }
 
 // SetSockOpt sets a socket option.
diff --git a/pkg/tcpip/transport/packet/endpoint.go b/pkg/tcpip/transport/packet/endpoint.go
index 3666bac0f..1e7debbb4 100644
--- a/pkg/tcpip/transport/packet/endpoint.go
+++ b/pkg/tcpip/transport/packet/endpoint.go
@@ -206,8 +206,8 @@ func (*endpoint) Write(p tcpip.Payloader, opts tcpip.WriteOptions) (int64, <-cha
 }
 
 // Peek implements tcpip.Endpoint.Peek.
-func (*endpoint) Peek([][]byte) (int64, tcpip.ControlMessages, *tcpip.Error) {
-	return 0, tcpip.ControlMessages{}, nil
+func (*endpoint) Peek([][]byte) (int64, *tcpip.Error) {
+	return 0, nil
 }
 
 // Disconnect implements tcpip.Endpoint.Disconnect. Packet sockets cannot be
diff --git a/pkg/tcpip/transport/raw/endpoint.go b/pkg/tcpip/transport/raw/endpoint.go
index 0840a4b3d..90b032d85 100644
--- a/pkg/tcpip/transport/raw/endpoint.go
+++ b/pkg/tcpip/transport/raw/endpoint.go
@@ -386,8 +386,8 @@ func (e *endpoint) finishWrite(payloadBytes []byte, route *stack.Route) (int64,
 }
 
 // Peek implements tcpip.Endpoint.Peek.
-func (e *endpoint) Peek([][]byte) (int64, tcpip.ControlMessages, *tcpip.Error) {
-	return 0, tcpip.ControlMessages{}, nil
+func (e *endpoint) Peek([][]byte) (int64, *tcpip.Error) {
+	return 0, nil
 }
 
 // Disconnect implements tcpip.Endpoint.Disconnect.
diff --git a/pkg/tcpip/transport/tcp/endpoint.go b/pkg/tcpip/transport/tcp/endpoint.go
index 87eda2efb..3e116e829 100644
--- a/pkg/tcpip/transport/tcp/endpoint.go
+++ b/pkg/tcpip/transport/tcp/endpoint.go
@@ -1498,7 +1498,7 @@ func (e *endpoint) Write(p tcpip.Payloader, opts tcpip.WriteOptions) (int64, <-c
 // Peek reads data without consuming it from the endpoint.
 //
 // This method does not block if there is no data pending.
-func (e *endpoint) Peek(vec [][]byte) (int64, tcpip.ControlMessages, *tcpip.Error) {
+func (e *endpoint) Peek(vec [][]byte) (int64, *tcpip.Error) {
 	e.LockUser()
 	defer e.UnlockUser()
 
@@ -1506,10 +1506,10 @@ func (e *endpoint) Peek(vec [][]byte) (int64, tcpip.ControlMessages, *tcpip.Erro
 	// but has some pending unread data.
 	if s := e.EndpointState(); !s.connected() && s != StateClose {
 		if s == StateError {
-			return 0, tcpip.ControlMessages{}, e.hardErrorLocked()
+			return 0, e.hardErrorLocked()
 		}
 		e.stats.ReadErrors.InvalidEndpointState.Increment()
-		return 0, tcpip.ControlMessages{}, tcpip.ErrInvalidEndpointState
+		return 0, tcpip.ErrInvalidEndpointState
 	}
 
 	e.rcvListMu.Lock()
@@ -1518,9 +1518,9 @@ func (e *endpoint) Peek(vec [][]byte) (int64, tcpip.ControlMessages, *tcpip.Erro
 	if e.rcvBufUsed == 0 {
 		if e.rcvClosed || !e.EndpointState().connected() {
 			e.stats.ReadErrors.ReadClosed.Increment()
-			return 0, tcpip.ControlMessages{}, tcpip.ErrClosedForReceive
+			return 0, tcpip.ErrClosedForReceive
 		}
-		return 0, tcpip.ControlMessages{}, tcpip.ErrWouldBlock
+		return 0, tcpip.ErrWouldBlock
 	}
 
 	// Make a copy of vec so we can modify the slide headers.
@@ -1535,7 +1535,7 @@ func (e *endpoint) Peek(vec [][]byte) (int64, tcpip.ControlMessages, *tcpip.Erro
 
 			for len(v) > 0 {
 				if len(vec) == 0 {
-					return num, tcpip.ControlMessages{}, nil
+					return num, nil
 				}
 				if len(vec[0]) == 0 {
 					vec = vec[1:]
@@ -1550,7 +1550,7 @@ func (e *endpoint) Peek(vec [][]byte) (int64, tcpip.ControlMessages, *tcpip.Erro
 		}
 	}
 
-	return num, tcpip.ControlMessages{}, nil
+	return num, nil
 }
 
 // selectWindowLocked returns the new window without checking for shrinking or scaling
diff --git a/pkg/tcpip/transport/tcp/tcp_test.go b/pkg/tcpip/transport/tcp/tcp_test.go
index 1759ebea9..7581bdc97 100644
--- a/pkg/tcpip/transport/tcp/tcp_test.go
+++ b/pkg/tcpip/transport/tcp/tcp_test.go
@@ -4148,7 +4148,7 @@ func TestReadAfterClosedState(t *testing.T) {
 
 	// Check that peek works.
 	peekBuf := make([]byte, 10)
-	n, _, err := c.EP.Peek([][]byte{peekBuf})
+	n, err := c.EP.Peek([][]byte{peekBuf})
 	if err != nil {
 		t.Fatalf("Peek failed: %s", err)
 	}
@@ -4174,7 +4174,7 @@ func TestReadAfterClosedState(t *testing.T) {
 		t.Fatalf("got c.EP.Read(nil) = %s, want = %s", err, tcpip.ErrClosedForReceive)
 	}
 
-	if _, _, err := c.EP.Peek([][]byte{peekBuf}); err != tcpip.ErrClosedForReceive {
+	if _, err := c.EP.Peek([][]byte{peekBuf}); err != tcpip.ErrClosedForReceive {
 		t.Fatalf("got c.EP.Peek(...) = %s, want = %s", err, tcpip.ErrClosedForReceive)
 	}
 }
diff --git a/pkg/tcpip/transport/udp/endpoint.go b/pkg/tcpip/transport/udp/endpoint.go
index 04596183e..3a2baba14 100644
--- a/pkg/tcpip/transport/udp/endpoint.go
+++ b/pkg/tcpip/transport/udp/endpoint.go
@@ -550,8 +550,8 @@ func (e *endpoint) write(p tcpip.Payloader, opts tcpip.WriteOptions) (int64, <-c
 }
 
 // Peek only returns data from a single datagram, so do nothing here.
-func (e *endpoint) Peek([][]byte) (int64, tcpip.ControlMessages, *tcpip.Error) {
-	return 0, tcpip.ControlMessages{}, nil
+func (e *endpoint) Peek([][]byte) (int64, *tcpip.Error) {
+	return 0, nil
 }
 
 // OnReuseAddressSet implements tcpip.SocketOptionsHandler.OnReuseAddressSet.