[linux.git] / drivers / target / iscsi / iscsi_target_auth.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ISCSI_CHAP_H_
#define _ISCSI_CHAP_H_

#include <linux/types.h>

#define CHAP_DIGEST_UNKNOWN	0
#define CHAP_DIGEST_MD5		5
#define CHAP_DIGEST_SHA1	6
#define CHAP_DIGEST_SHA256	7
#define CHAP_DIGEST_SHA3_256	8

#define MAX_CHAP_CHALLENGE_LEN	32
#define CHAP_CHALLENGE_STR_LEN	4096
#define MAX_RESPONSE_LENGTH	128	/* sufficient for SHA3 256 */
#define	MAX_CHAP_N_SIZE		512

#define MD5_SIGNATURE_SIZE	16	/* 16 bytes in a MD5 message digest */
#define SHA1_SIGNATURE_SIZE	20	/* 20 bytes in a SHA1 message digest */
#define SHA256_SIGNATURE_SIZE	32	/* 32 bytes in a SHA256 message digest */
#define SHA3_256_SIGNATURE_SIZE	32	/* 32 bytes in a SHA3 256 message digest */

#define CHAP_STAGE_CLIENT_A	1
#define CHAP_STAGE_SERVER_AIC	2
#define CHAP_STAGE_CLIENT_NR	3
#define CHAP_STAGE_CLIENT_NRIC	4
#define CHAP_STAGE_SERVER_NR	5

struct iscsi_node_auth;
struct iscsit_conn;

extern u32 chap_main_loop(struct iscsit_conn *, struct iscsi_node_auth *, char *, char *,
				int *, int *);

struct iscsi_chap {
	unsigned char	id;
	unsigned char	challenge[MAX_CHAP_CHALLENGE_LEN];
	unsigned int	challenge_len;
	unsigned char	*digest_name;
	unsigned int	digest_size;
	unsigned int	authenticate_target;
	unsigned int	chap_state;
} ____cacheline_aligned;

#endif   /*** _ISCSI_CHAP_H_ ***/
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
e48354ce NB	2	#ifndef _ISCSI_CHAP_H_
	3	#define _ISCSI_CHAP_H_
	4
8dcf07be BVA	5	#include <linux/types.h>
8dcf07be BVA	6
3160723c	7	#define CHAP_DIGEST_UNKNOWN 0
e48354ce	8	#define CHAP_DIGEST_MD5 5
a572d24a ML	9	#define CHAP_DIGEST_SHA1 6
	10	#define CHAP_DIGEST_SHA256 7
	11	#define CHAP_DIGEST_SHA3_256 8
e48354ce	12
19f5f88e	13	#define MAX_CHAP_CHALLENGE_LEN 32
e48354ce	14	#define CHAP_CHALLENGE_STR_LEN 4096
a572d24a	15	#define MAX_RESPONSE_LENGTH 128 /* sufficient for SHA3 256 */
e48354ce NB	16	#define MAX_CHAP_N_SIZE 512
	17
	18	#define MD5_SIGNATURE_SIZE 16 /* 16 bytes in a MD5 message digest */
a572d24a ML	19	#define SHA1_SIGNATURE_SIZE 20 /* 20 bytes in a SHA1 message digest */
	20	#define SHA256_SIGNATURE_SIZE 32 /* 32 bytes in a SHA256 message digest */
	21	#define SHA3_256_SIGNATURE_SIZE 32 /* 32 bytes in a SHA3 256 message digest */
e48354ce NB	22
	23	#define CHAP_STAGE_CLIENT_A 1
	24	#define CHAP_STAGE_SERVER_AIC 2
	25	#define CHAP_STAGE_CLIENT_NR 3
	26	#define CHAP_STAGE_CLIENT_NRIC 4
	27	#define CHAP_STAGE_SERVER_NR 5
	28
8dcf07be	29	struct iscsi_node_auth;
be36d683	30	struct iscsit_conn;
8dcf07be	31
be36d683	32	extern u32 chap_main_loop(struct iscsit_conn , struct iscsi_node_auth , char , char ,
e48354ce NB	33	int , int );
	34
	35	struct iscsi_chap {
e48354ce	36	unsigned char id;
19f5f88e	37	unsigned char challenge[MAX_CHAP_CHALLENGE_LEN];
a572d24a ML	38	unsigned int challenge_len;
	39	unsigned char *digest_name;
	40	unsigned int digest_size;
e48354ce NB	41	unsigned int authenticate_target;
	42	unsigned int chap_state;
	43	} ____cacheline_aligned;
	44
	45	#endif /* _ISCSI_CHAP_H_ */