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#ifndef _IPXE_NVO_H
#define _IPXE_NVO_H
/** @file
*
* Non-volatile stored options
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/dhcpopts.h>
#include <ipxe/settings.h>
struct nvs_device;
struct refcnt;
/**
* A block of non-volatile stored options
*/
struct nvo_block {
/** Settings block */
struct settings settings;
/** Underlying non-volatile storage device */
struct nvs_device *nvs;
/** Address within NVS device */
unsigned int address;
/** Length of options data */
size_t len;
/** Option-containing data */
void *data;
/**
* Resize non-volatile stored option block
*
* @v nvo Non-volatile options block
* @v len New size
* @ret rc Return status code
*/
int ( * resize ) ( struct nvo_block *nvo, size_t len );
/** DHCP options block */
struct dhcp_options dhcpopts;
};
/** Name of non-volatile options settings block */
#define NVO_SETTINGS_NAME "nvo"
extern int nvo_applies ( struct settings *settings,
const struct setting *setting );
extern void nvo_init ( struct nvo_block *nvo, struct nvs_device *nvs,
size_t address, size_t len,
int ( * resize ) ( struct nvo_block *nvo, size_t len ),
struct refcnt *refcnt );
extern int register_nvo ( struct nvo_block *nvo, struct settings *parent );
extern void unregister_nvo ( struct nvo_block *nvo );
#endif /* _IPXE_NVO_H */
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