RTNH_ALIGN 314 include/linux/rtnetlink.h #define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len))) RTNH_ALIGN 315 include/linux/rtnetlink.h #define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len)) RTNH_ALIGN 316 include/linux/rtnetlink.h #define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))