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#ifndef _IPXE_EAPOL_H
#define _IPXE_EAPOL_H
/** @file
*
* Extensible Authentication Protocol over LAN (EAPoL)
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/netdevice.h>
#include <ipxe/tables.h>
#include <ipxe/eap.h>
/** EAPoL header */
struct eapol_header {
/** Version */
uint8_t version;
/** Type */
uint8_t type;
/** Payload length */
uint16_t len;
} __attribute__ (( packed ));
/** 802.1X-2001 */
#define EAPOL_VERSION_2001 1
/** EAPoL-encapsulated EAP packets */
#define EAPOL_TYPE_EAP 0
/** EAPoL start */
#define EAPOL_TYPE_START 1
/** EAPoL key */
#define EAPOL_TYPE_KEY 5
/** An EAPoL supplicant */
struct eapol_supplicant {
/** EAP supplicant */
struct eap_supplicant eap;
/** EAPoL-Start retransmission timer */
struct retry_timer timer;
/** EAPoL-Start transmission count */
unsigned int count;
};
/** Delay between EAPoL-Start packets */
#define EAPOL_START_INTERVAL ( 2 * TICKS_PER_SEC )
/** Maximum number of EAPoL-Start packets to transmit */
#define EAPOL_START_COUNT 3
/** An EAPoL handler */
struct eapol_handler {
/** Type */
uint8_t type;
/**
* Process received packet
*
* @v supplicant EAPoL supplicant
* @v iobuf I/O buffer
* @v ll_source Link-layer source address
* @ret rc Return status code
*
* This method takes ownership of the I/O buffer.
*/
int ( * rx ) ( struct eapol_supplicant *supplicant,
struct io_buffer *iobuf, const void *ll_source );
};
/** EAPoL handler table */
#define EAPOL_HANDLERS __table ( struct eapol_handler, "eapol_handlers" )
/** Declare an EAPoL handler */
#define __eapol_handler __table_entry ( EAPOL_HANDLERS, 01 )
extern struct net_protocol eapol_protocol __net_protocol;
#endif /* _IPXE_EAPOL_H */
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