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- #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 */
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