iscsi-protocol.h

这个linux源代码是很全面的~基本完整了~使用c编译的~由于时间问题我没有亲自测试~但就算用来做参考资料也是非常好的

    UINT8  rsvd3[12];
};


/* Response values */
#define SCSI_TCP_TM_RESP_COMPLETE	0x00
#define SCSI_TCP_TM_RESP_NO_TASK	0x01
#define SCSI_TCP_TM_RESP_NO_LUN		0x02
#define SCSI_TCP_TM_RESP_TASK_ALLEGIANT	0x03
#define SCSI_TCP_TM_RESP_NO_FAILOVER	0x04
#define SCSI_TCP_TM_RESP_IN_PRGRESS	0x05
#define SCSI_TCP_TM_RESP_REJECTED	0xff

/* Ready To Transfer Header */
struct IscsiRttHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  fbit:1,
           rsvd1:7;
#else
    UINT8  rsvd1:7,
           fbit:1;
#endif
    UINT8  rsvd2[2];
    UINT8  rsvd3[12];
    UINT32 itt;		/* Initiator Task Tag */
    UINT32 ttt;		/* Target Transfer Tag */
    UINT32 statsn;
    UINT32 expcmdsn;
    UINT32 maxcmdsn;
    UINT32 rttsn;
    UINT32 data_offset;
    UINT32 data_length;
};


/* SCSI Data Hdr */
struct IscsiDataHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  final:1,
           rsvd1:7;
#else
    UINT8  rsvd1:7,
           final:1;
#endif
    UINT8  rsvd2[2];
    UINT8  rsvd3;
    UINT8  dlength[3];
    UINT8  lun[8];
    UINT32 itt;
    UINT32 ttt;
    UINT32 rsvd4;
    UINT32 expstatsn;
    UINT32 rsvd5;
    UINT32 datasn;
    UINT32 offset;
    UINT32 rsvd6;
    /* Payload */
};

/* SCSI Data Response Hdr */
struct IscsiDataRspHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  final:1,
	   ack:1,
	   rsvd1:3,
           overflow:1,
           underflow:1,
           status_present:1;
#else
    UINT8  status_present:1,
	   underflow:1,
	   overflow:1,
	   rsvd1:3,
	   ack:1,
	   final:1;
#endif
    UINT8  rsvd2;
    UINT8  cmd_status;
    UINT8  hlength;
    UINT8  dlength[3];
    UINT8  lun[8];
    UINT32 itt;
    UINT32 ttt;
    UINT32 statsn;
    UINT32 expcmdsn;
    UINT32 maxcmdsn;
    UINT32 datasn;
    UINT32 offset;
    UINT32 residual_count;
};

/* Text Header */
struct IscsiTextHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  final:1,
           cbit:1,
           rsvd1:6;
#else
    UINT8  rsvd1:6,
           cbit:1,
           final:1;
#endif
    UINT8  rsvd2[2];
    UINT8  hlength;
    UINT8  dlength[3];
    UINT8  rsvd4[8];
    UINT32 itt;
    UINT32 ttt;
    UINT32 cmdsn;
    UINT32 expstatsn;
    UINT8  rsvd5[16];
    /* Text - key=value pairs */
};

/* Text Response Header */
struct IscsiTextRspHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  final:1,
           cbit:1,
           rsvd1:6;
#else
    UINT8  rsvd1:6,
           cbit:1,
           final:1;
#endif
    UINT8  rsvd2[2];
    UINT8  hlength;
    UINT8  dlength[3];
    UINT8  rsvd4[8];
    UINT32 itt;
    UINT32 ttt;
    UINT32 statsn;
    UINT32 expcmdsn;
    UINT32 maxcmdsn;
    UINT8  rsvd5[12];
    /* Text Response - key:value pairs */
};

/* Login Header */
struct IscsiLoginHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  tbit:1,
	   cbit:1,
	   rsvd1:2,
	   curr:2,
	   next:2;
#else
    UINT8  next:2,
	   curr:2,
	   rsvd1:2,
	   cbit:1,
	   tbit:1;
#endif
    UINT8  max_version;	/* Max. version supported */
    UINT8  min_version;	/* Min. version supported */
    UINT8  hlength;
    UINT8  dlength[3];
    UINT8  isid[6];	/* Initiator Session ID */
    UINT16 tsid;	/* Target Session ID */
    UINT32 itt;		/* Initiator Task Tag */
    UINT16 cid;
    UINT16 rsvd3;                                                               
    UINT32 cmdsn;
    UINT32 expstatsn;
    UINT8  rsvd5[16];
};

/* Login Response Header */
struct IscsiLoginRspHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  tbit:1,
	   cbit:1,
	   rsvd:2,
	   curr:2,
	   next:2;
#else
    UINT8  next:2,
	   curr:2,
	   rsvd:2,
	   cbit:1,
	   tbit:1;
#endif
    UINT8  max_version;		/* Max. version supported */
    UINT8  active_version;	/* Active version */
    UINT8  hlength;
    UINT8  dlength[3];
    UINT8  isid[6];             /* Initiator Session ID */
    UINT16 tsid;		/* Target Session ID */
    UINT32 itt;			/* Initiator Task Tag */
    UINT32 rsvd3;
    UINT32 statsn;
    UINT32 expcmdsn;
    UINT32 maxcmdsn;
    UINT8  status_class;	/* see Login RSP ststus classes below */
    UINT8  status_detail;	/* see Login RSP Status details below */
    UINT8  rsvd4[10];
};

/* Login stage (phase) codes  for CNxSG */
#define ISCSI_SECURITY_NEGOTIATION_PHASE	0
#define ISCSI_OP_PARMS_NEGOTIATION_PHASE	1
#define ISCSI_FULL_FEATURE_PHASE		3

/* Login Status response classes */
#define STATUS_CLASS_SUCCESS		0x00
#define STATUS_CLASS_REDIRECT		0x01
#define STATUS_CLASS_INITIATOR_ERR	0x02
#define STATUS_CLASS_TARGET_ERR		0x03

/* Login Status response detail codes */
/* Class-0 (Success) */
#define ISCSI_LOGIN_STATUS_ACCEPT		0x00

/* Class-1 (Redirection) */
#define ISCSI_LOGIN_STATUS_TGT_MOVED_TEMP	0x01
#define ISCSI_LOGIN_STATUS_TGT_MOVED_PERM	0x02

/* Class-2 (Initiator Error) */
#define ISCSI_LOGIN_STATUS_INIT_ERR		0x00
#define ISCSI_LOGIN_STATUS_AUTH_FAILED		0x01
#define ISCSI_LOGIN_STATUS_TGT_FORBIDDEN	0x02
#define ISCSI_LOGIN_STATUS_TGT_NOT_FOUND	0x03
#define ISCSI_LOGIN_STATUS_TGT_REMOVED		0x04
#define ISCSI_LOGIN_STATUS_NO_VERSION		0x05
#define ISCSI_LOGIN_STATUS_ISID_ERROR		0x06
#define ISCSI_LOGIN_STATUS_MISSING_FIELDS	0x07
#define ISCSI_LOGIN_STATUS_CONN_ADD_FAILED	0x08
#define ISCSI_LOGIN_STATUS_NO_SESSION_TYPE	0x09
#define ISCSI_LOGIN_STATUS_NO_SESSION           0x0a
#define ISCSI_LOGIN_STATUS_INVALID_REQUEST      0x0b

/* Class-3 (Target Error) */
#define ISCSI_LOGIN_STATUS_TARGET_ERROR		0x00
#define ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE	0x01
#define ISCSI_LOGIN_STATUS_NO_RESOURCES	        0x02

/* Logout Header */
struct IscsiLogoutHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  fbit:1,
           reason:7;
#else
    UINT8  reason:7,
           fbit:1;
#endif
    UINT8  rsvd1[2];
    UINT8  hlength;
    UINT8  dlength[3];
    UINT8  rsvd2[8];
    UINT32 itt;		/* Initiator Task Tag */
    UINT16 cid;
    UINT8  rsvd3[2];
    UINT32 cmdsn;
    UINT32 expstatsn;
    UINT8  rsvd4[16];
};

/* logout reason_code values */

#define ISCSI_LOGOUT_REASON_CLOSE_SESSION	0
#define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION	1
#define ISCSI_LOGOUT_REASON_RECOVERY		2
#define ISCSI_LOGOUT_REASON_AEN_REQUEST	        3

/* Logout Response Header */
struct IscsiLogoutRspHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  fbit:1,
           rsvd1:7;
#else
    UINT8  rsvd1:7,
           fbit:1;
#endif
    UINT8  response;		/* see Logout response values below */
    UINT8  rsvd2;
    UINT8  hlength;
    UINT8  dlength[3];
    UINT8  rsvd3[8];
    UINT32 itt;			/* Initiator Task Tag */
    UINT32 rsvd4;
    UINT32 statsn;
    UINT32 expcmdsn;
    UINT32 maxcmdsn;
    UINT32 rsvd5;
    UINT16 t2wait;
    UINT16 t2retain;
    UINT32 rsvd6;
};

/* logout response status values */

#define ISCSI_LOGOUT_SUCCESS		  0
#define ISCSI_LOGOUT_CID_NOT_FOUND	  1
#define ISCSI_LOGOUT_RECOVERY_UNSUPPORTED 2
#define ISCSI_LOGOUT_CLEANUP_FAILED	  3


/* SNACK Header */
struct IscsiSNACKHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  fbit:1,
	   rsvd1:3,
	   type:4;
#else
    UINT8  type:4,
	   rsvd1:3,
	   fbit:1;
#endif
    UINT8  rsvd2[14];
    UINT32 itt;
    UINT32 begrun;
    UINT32 runlength;
    UINT32 expstatsn;
    UINT32 rsvd3;
    UINT32 expdatasn;
    UINT8  rsvd6[8];
};


/* Reject Message Header */
struct IscsiRejectRspHdr {
    UINT8  opcode;
#ifdef ISCSI_BIG_ENDIAN_BITFIELD
    UINT8  fbit:1,
           rsvd1:7;
#else
    UINT8  rsvd1:7,
           fbit:1;
#endif
    UINT8  reason;
    UINT8  rsvd2;
    UINT8  rsvd3;
    UINT8  dlength[3];
    UINT8  rsvd4[16];
    UINT32 statsn;
    UINT32 expcmdsn;
    UINT32 maxcmdsn;
    UINT32 datasn;
    UINT8  rsvd5[8];
    /* Text - Rejected hdr */
};

/* Reason for Reject */
#define CMD_BEFORE_LOGIN        1
#define DATA_DIGEST_ERROR       2
#define DATA_SNACK_REJECT       3
#define ISCSI_PROTOCOL_ERROR    4
#define CMD_NOT_SUPPORTED       5
#define IMM_CMD_REJECT          6
#define TASK_IN_PROGRESS        7
#define INVALID_SNACK           8
#define BOOKMARK_REJECTED       9
#define BOOKMARK_NO_RESOURCES   10
#define NEGOTIATION_RESET	11


#ifdef __cplusplus
}
#endif

#endif