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#ifndef _GPXE_NVO_H
#define _GPXE_NVO_H
/** @file
*
* Non-volatile stored options
*
*/
#include <stdint.h>
#include <gpxe/dhcpopts.h>
#include <gpxe/settings.h>
struct nvs_device;
struct refcnt;
/**
* 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 {
/** Settings block */
struct settings settings;
/** 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 option-containing fragments */
size_t total_len;
/** Option-containing data */
void *data;
/** DHCP options block */
struct dhcp_options dhcpopts;
};
extern void nvo_init ( struct nvo_block *nvo, struct nvs_device *nvs,
struct nvo_fragment *fragments, struct refcnt *refcnt );
extern int register_nvo ( struct nvo_block *nvo, struct settings *parent );
extern void unregister_nvo ( struct nvo_block *nvo );
#endif /* _GPXE_NVO_H */
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