hdlc_header_t * h = va_arg (*args, hdlc_header_t *);
u32 max_header_bytes = va_arg (*args, u32);
hdlc_protocol_t p = clib_net_to_host_u16 (h->protocol);
hdlc_header_t * h = va_arg (*args, hdlc_header_t *);
u32 max_header_bytes = va_arg (*args, u32);
hdlc_protocol_t p = clib_net_to_host_u16 (h->protocol);