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