--- a/src/core/ngx_connection.h
+++ b/src/core/ngx_connection.h
@@ -69,6 +69,9 @@ struct ngx_listening_s {
     char               *accept_filter;
 #endif
 #endif
+#if (NGX_HAVE_SETFIB)
+    int                 setfib;
+#endif
 
 };
 
@@ -132,6 +135,8 @@ struct ngx_connection_s {
 
     ngx_buf_t          *buffer;
 
+    ngx_queue_t         queue;
+
     ngx_atomic_uint_t   number;
 
     ngx_uint_t          requests;
@@ -147,6 +152,7 @@ struct ngx_connection_s {
     unsigned            destroyed:1;
 
     unsigned            idle:1;
+    unsigned            reusable:1;
     unsigned            close:1;
 
     unsigned            sendfile:1;
@@ -183,5 +189,6 @@ ngx_int_t ngx_connection_error(ngx_conne
 ngx_connection_t *ngx_get_connection(ngx_socket_t s, ngx_log_t *log);
 void ngx_free_connection(ngx_connection_t *c);
 
+void ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable);
 
 #endif /* _NGX_CONNECTION_H_INCLUDED_ */