the definitive tun offloads branch (#1704)

overlay/overlaytest/noop.go

@@ -3,10 +3,9 @@
 package overlaytest
 
 import (
-	"errors"
-	"io"
 	"net/netip"
 
+	"github.com/slackhq/nebula/overlay/tio"
 	"github.com/slackhq/nebula/routing"
 )
 
@@ -31,20 +30,16 @@ func (NoopTun) Name() string {
 	return "noop"
 }
 
-func (NoopTun) Read([]byte) (int, error) {
-	return 0, nil
+func (NoopTun) Read() ([]tio.Packet, error) {
+	return nil, nil
 }
 
 func (NoopTun) Write([]byte) (int, error) {
 	return 0, nil
 }
 
-func (NoopTun) SupportsMultiqueue() bool {
-	return false
-}
-
-func (NoopTun) NewMultiQueueReader() (io.ReadWriteCloser, error) {
-	return nil, errors.New("unsupported")
+func (NoopTun) Queues(int) ([]tio.Queue, error) {
+	return []tio.Queue{NoopTun{}}, nil
 }
 
 func (NoopTun) Close() error {