BGP doesn't need any inline attributes.

nest/route.h

@@ -161,10 +161,6 @@ typedef struct rte {
       u32 metric1, metric2;		/* OSPF Type 1 and Type 2 metrics */
       u32 tag;				/* External route tag */
     } ospf;
-#endif
-#ifdef CONFIG_BGP
-    struct {
-    } bgp;
 #endif
     struct {				/* Routes generated by krt sync (both temporary and inherited ones) */
       s8 src;				/* Alleged route source (see krt.h) */