+#define FLAG_HLINK_DONE (1<<8) /* receiver/generator */
+#define FLAG_LENGTH64 (1<<9) /* sender/receiver/generator */
+
+#define BITS_SET(val,bits) (((val) & (bits)) == (bits))
+#define BITS_SETnUNSET(val,onbits,offbits) (((val) & ((onbits)|(offbits))) == (onbits))