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- #ifndef _GPXE_NVO_H
- #define _GPXE_NVO_H
-
- /** @file
- *
- * Non-volatile stored options
- *
- */
-
- FILE_LICENCE ( GPL2_OR_LATER );
-
- #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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