1 #ifndef _ISCSI_CHAP_H_ 2 #define _ISCSI_CHAP_H_ 3 4 #define CHAP_DIGEST_UNKNOWN 0 5 #define CHAP_DIGEST_MD5 5 6 #define CHAP_DIGEST_SHA 6 7 8 #define CHAP_CHALLENGE_LENGTH 16 9 #define CHAP_CHALLENGE_STR_LEN 4096 10 #define MAX_RESPONSE_LENGTH 64 /* sufficient for MD5 */ 11 #define MAX_CHAP_N_SIZE 512 12 13 #define MD5_SIGNATURE_SIZE 16 /* 16 bytes in a MD5 message digest */ 14 15 #define CHAP_STAGE_CLIENT_A 1 16 #define CHAP_STAGE_SERVER_AIC 2 17 #define CHAP_STAGE_CLIENT_NR 3 18 #define CHAP_STAGE_CLIENT_NRIC 4 19 #define CHAP_STAGE_SERVER_NR 5 20 21 extern u32 chap_main_loop(struct iscsi_conn *, struct iscsi_node_auth *, char *, char *, 22 int *, int *); 23 24 struct iscsi_chap { 25 unsigned char digest_type; 26 unsigned char id; 27 unsigned char challenge[CHAP_CHALLENGE_LENGTH]; 28 unsigned int authenticate_target; 29 unsigned int chap_state; 30 } ____cacheline_aligned; 31 32 #endif /*** _ISCSI_CHAP_H_ ***/ 33