pkg/sensors: TcUnloader do not detach on unpin false

Same as previous commit for tc unloader.

Signed-off-by: Mahe Tardy <[email protected]>

pkg/sensors/unloader/unloader.go

@@ -110,10 +110,15 @@ type TcAttachment struct {
 	IsIngress bool
 }
 
-func (tu TcUnloader) Unload(_ bool) error {
-	for _, att := range tu.Attachments {
-		if err := detachTC(att.LinkName, att.IsIngress); err != nil {
-			return err
+func (tu TcUnloader) Unload(unpin bool) error {
+	// PROG_ATTACH does not return any link, so there's nothing to unpin,
+	// but we must skip the detach operation for 'unpin == false' otherwise
+	// the pinned program will be un-attached
+	if unpin {
+		for _, att := range tu.Attachments {
+			if err := detachTC(att.LinkName, att.IsIngress); err != nil {
+				return err
+			}
 		}
 	}
 	return nil