iscsi_target_auth.h

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#ifndef _ISCSI_CHAP_H_
#define _ISCSI_CHAP_H_

#define CHAP_DIGEST_MD5     5
#define CHAP_DIGEST_SHA     6

#define CHAP_CHALLENGE_LENGTH   16
#define CHAP_CHALLENGE_STR_LEN  4096
#define MAX_RESPONSE_LENGTH 64  /* sufficient for MD5 */
#define MAX_CHAP_N_SIZE     512

#define MD5_SIGNATURE_SIZE  16  /* 16 bytes in a MD5 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

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

struct iscsi_chap {
    unsigned char   digest_type;
    unsigned char   id;
    unsigned char   challenge[CHAP_CHALLENGE_LENGTH];
    unsigned int    authenticate_target;
    unsigned int    chap_state;
} ____cacheline_aligned;

#endif   /*** _ISCSI_CHAP_H_ ***/