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#ifndef _IPXE_DHCPOPTS_H
#define _IPXE_DHCPOPTS_H
/** @file
*
* DHCP options
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
/** A DHCP options block */
struct dhcp_options {
/** Option block raw data */
void *data;
/** Option block used length */
size_t used_len;
/** Option block allocated length */
size_t alloc_len;
/** Reallocate option block raw data
*
* @v options DHCP option block
* @v len New length
* @ret rc Return status code
*/
int ( * realloc ) ( struct dhcp_options *options, size_t len );
};
extern int dhcpopt_applies ( unsigned int tag );
extern int dhcpopt_store ( struct dhcp_options *options, unsigned int tag,
const void *data, size_t len );
extern int dhcpopt_fetch ( struct dhcp_options *options, unsigned int tag,
void *data, size_t len );
extern void dhcpopt_init ( struct dhcp_options *options,
void *data, size_t alloc_len,
int ( * realloc ) ( struct dhcp_options *options,
size_t len ) );
extern void dhcpopt_update_used_len ( struct dhcp_options *options );
extern int dhcpopt_no_realloc ( struct dhcp_options *options, size_t len );
#endif /* _IPXE_DHCPOPTS_H */
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