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#ifndef _IPXE_EAP_H
#define _IPXE_EAP_H
/** @file
*
* Extensible Authentication Protocol
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/netdevice.h>
#include <ipxe/timer.h>
/** EAP header */
struct eap_header {
/** Code */
uint8_t code;
/** Identifier */
uint8_t id;
/** Length */
uint16_t len;
} __attribute__ (( packed ));
/** EAP request */
#define EAP_CODE_REQUEST 1
/** EAP request */
struct eap_request {
/** Header */
struct eap_header hdr;
/** Type */
uint8_t type;
} __attribute__ (( packed ));
/** EAP identity */
#define EAP_TYPE_IDENTITY 1
/** EAP success */
#define EAP_CODE_SUCCESS 3
/** EAP failure */
#define EAP_CODE_FAILURE 4
/** EAP packet */
union eap_packet {
/** Header */
struct eap_header hdr;
/** Request */
struct eap_request req;
};
/** Link block timeout
*
* We mark the link as blocked upon receiving a Request-Identity, on
* the basis that this most likely indicates that the switch will not
* yet be forwarding packets.
*
* There is no way to tell how frequently the Request-Identity packet
* will be retransmitted by the switch. The default value for Cisco
* switches seems to be 30 seconds, so treat the link as blocked for
* 45 seconds.
*/
#define EAP_BLOCK_TIMEOUT ( 45 * TICKS_PER_SEC )
/** An EAP supplicant */
struct eap_supplicant {
/** Network device */
struct net_device *netdev;
/** Authentication outcome is final */
int done;
/**
* Transmit EAP response
*
* @v supplicant EAP supplicant
* @v data Response data
* @v len Length of response data
* @ret rc Return status code
*/
int ( * tx ) ( struct eap_supplicant *supplicant,
const void *data, size_t len );
};
extern int eap_rx ( struct eap_supplicant *supplicant,
const void *data, size_t len );
#endif /* _IPXE_EAP_H */
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