#ifndef _GPXE_NVO_H
#define _GPXE_NVO_H
/** @file
*
* Non-volatile stored options
*/
#include <stdint.h>
struct nvs_device;
struct dhcp_option_block;
/**
* A fragment of a non-volatile storage device used for stored options
struct nvo_fragment {
/** Starting address of fragment within NVS device */
unsigned int address;
/** Length of fragment */
size_t len;
};
* A block of non-volatile stored options
struct nvo_block {
/** Underlying non-volatile storage device */
struct nvs_device *nvs;
/** List of option-containing fragments
* The list is terminated by a fragment with a length of zero.
struct nvo_fragment *fragments;
/** Total length of all fragments
* This field is filled in by nvo_register().
size_t total_len;
/** DHCP options block */
struct dhcp_option_block *options;
extern int nvo_register ( struct nvo_block *nvo );
extern int nvo_save ( struct nvo_block *nvo );
extern void nvo_unregister ( struct nvo_block *nvo );
#endif /* _GPXE_NVO_H */