1#ifndef _ISCSI_CHAP_H_
2#define _ISCSI_CHAP_H_
3
4#define CHAP_DIGEST_MD5		5
5#define CHAP_DIGEST_SHA		6
6
7#define CHAP_CHALLENGE_LENGTH	16
8#define CHAP_CHALLENGE_STR_LEN	4096
9#define MAX_RESPONSE_LENGTH	64	/* sufficient for MD5 */
10#define	MAX_CHAP_N_SIZE		512
11
12#define MD5_SIGNATURE_SIZE	16	/* 16 bytes in a MD5 message digest */
13
14#define CHAP_STAGE_CLIENT_A	1
15#define CHAP_STAGE_SERVER_AIC	2
16#define CHAP_STAGE_CLIENT_NR	3
17#define CHAP_STAGE_CLIENT_NRIC	4
18#define CHAP_STAGE_SERVER_NR	5
19
20extern u32 chap_main_loop(struct iscsi_conn *, struct iscsi_node_auth *, char *, char *,
21				int *, int *);
22
23struct iscsi_chap {
24	unsigned char	digest_type;
25	unsigned char	id;
26	unsigned char	challenge[CHAP_CHALLENGE_LENGTH];
27	unsigned int	authenticate_target;
28	unsigned int	chap_state;
29} ____cacheline_aligned;
30
31#endif   /*** _ISCSI_CHAP_H_ ***/
32