mirror of
https://github.com/SCST-project/scst.git
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fe38e4acb2
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@6146 d57e44dd-8a1f-0410-8b47-8ef2f437770f
257 lines
6.0 KiB
C
257 lines
6.0 KiB
C
/*
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* Copyright (C) 2002 - 2003 Ardis Technolgies <roman@ardistech.com>
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* Copyright (C) 2007 - 2015 Vladislav Bolkhovitin
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* Copyright (C) 2007 - 2015 SanDisk Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2
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* of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef ISCSI_HDR_H
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#define ISCSI_HDR_H
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#define ISCSI_VERSION 0
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#define __packed __attribute__ ((packed))
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struct iscsi_hdr {
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u8 opcode; /* 0 */
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u8 flags;
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u8 spec1[2];
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u8 ahslength; /* 4 */
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u8 datalength[3];
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u16 lun[4]; /* 8 */
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u32 itt; /* 16 */
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u32 ttt; /* 20 */
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u32 sn; /* 24 */
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u32 exp_sn; /* 28 */
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u32 max_sn; /* 32 */
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u32 spec3[3]; /* 36 */
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} __packed; /* 48 */
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/* Opcode encoding bits */
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#define ISCSI_OP_RETRY 0x80
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#define ISCSI_OP_IMMEDIATE 0x40
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#define ISCSI_OPCODE_MASK 0x3F
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/* Client to Server Message Opcode values */
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#define ISCSI_OP_NOP_OUT 0x00
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#define ISCSI_OP_SCSI_CMD 0x01
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#define ISCSI_OP_SCSI_TASK_MGT_MSG 0x02
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#define ISCSI_OP_LOGIN_CMD 0x03
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#define ISCSI_OP_TEXT_CMD 0x04
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#define ISCSI_OP_SCSI_DATA 0x05
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#define ISCSI_OP_LOGOUT_CMD 0x06
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#define ISCSI_OP_SNACK_CMD 0x10
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/* Server to Client Message Opcode values */
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#define ISCSI_OP_NOP_IN 0x20
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#define ISCSI_OP_SCSI_RSP 0x21
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#define ISCSI_OP_SCSI_TASK_MGT_RSP 0x22
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#define ISCSI_OP_LOGIN_RSP 0x23
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#define ISCSI_OP_TEXT_RSP 0x24
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#define ISCSI_OP_SCSI_DATA_RSP 0x25
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#define ISCSI_OP_LOGOUT_RSP 0x26
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#define ISCSI_OP_R2T_RSP 0x31
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#define ISCSI_OP_ASYNC_EVENT 0x32
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#define ISCSI_OP_REJECT_MSG 0x3f
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struct iscsi_ahs_hdr {
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u16 ahslength;
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u8 ahstype;
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} __packed;
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#define ISCSI_AHSTYPE_CDB 1
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#define ISCSI_AHSTYPE_RLENGTH 2
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union iscsi_sid {
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struct {
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u8 isid[6]; /* Initiator Session ID */
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u16 tsih; /* Target Session ID */
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} id;
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u64 id64;
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} __packed;
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struct iscsi_text_req_hdr {
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u8 opcode;
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u8 flags;
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u16 rsvd1;
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u8 ahslength;
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u8 datalength[3];
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u32 rsvd2[2];
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u32 itt;
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u32 ttt;
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u32 cmd_sn;
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u32 exp_stat_sn;
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u32 rsvd3[4];
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} __packed;
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struct iscsi_text_rsp_hdr {
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u8 opcode;
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u8 flags;
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u16 rsvd1;
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u8 ahslength;
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u8 datalength[3];
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u32 rsvd2[2];
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u32 itt;
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u32 ttt;
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u32 stat_sn;
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u32 exp_cmd_sn;
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u32 max_cmd_sn;
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u32 rsvd3[3];
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} __packed;
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struct iscsi_login_req_hdr {
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u8 opcode;
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u8 flags;
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u8 max_version; /* Max. version supported */
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u8 min_version; /* Min. version supported */
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u8 ahslength;
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u8 datalength[3];
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union iscsi_sid sid;
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u32 itt; /* Initiator Task Tag */
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u16 cid; /* Connection ID */
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u16 rsvd1;
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u32 cmd_sn;
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u32 exp_stat_sn;
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u32 rsvd2[4];
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} __packed;
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struct iscsi_login_rsp_hdr {
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u8 opcode;
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u8 flags;
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u8 max_version; /* Max. version supported */
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u8 active_version; /* Active version */
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u8 ahslength;
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u8 datalength[3];
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union iscsi_sid sid;
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u32 itt; /* Initiator Task Tag */
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u32 rsvd1;
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u32 stat_sn;
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u32 exp_cmd_sn;
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u32 max_cmd_sn;
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u8 status_class; /* see Login RSP Status classes below */
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u8 status_detail; /* see Login RSP Status details below */
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u8 rsvd2[10];
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} __packed;
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#define ISCSI_FLG_CONTINUE 0x40
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#define ISCSI_FLG_FINAL 0x80
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#define ISCSI_FLG_TRANSIT 0x80
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#define ISCSI_FLG_CSG_SECURITY 0x00
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#define ISCSI_FLG_CSG_LOGIN 0x04
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#define ISCSI_FLG_CSG_FULL_FEATURE 0x0c
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#define ISCSI_FLG_CSG_MASK 0x0c
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#define ISCSI_FLG_NSG_SECURITY 0x00
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#define ISCSI_FLG_NSG_LOGIN 0x01
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#define ISCSI_FLG_NSG_FULL_FEATURE 0x03
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#define ISCSI_FLG_NSG_MASK 0x03
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/* Login Status response classes */
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#define ISCSI_STATUS_SUCCESS 0x00
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#define ISCSI_STATUS_REDIRECT 0x01
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#define ISCSI_STATUS_INITIATOR_ERR 0x02
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#define ISCSI_STATUS_TARGET_ERR 0x03
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/* Login Status response detail codes */
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/* Class-0 (Success) */
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#define ISCSI_STATUS_ACCEPT 0x00
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/* Class-1 (Redirection) */
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#define ISCSI_STATUS_TGT_MOVED_TEMP 0x01
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#define ISCSI_STATUS_TGT_MOVED_PERM 0x02
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/* Class-2 (Initiator Error) */
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#define ISCSI_STATUS_INIT_ERR 0x00
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#define ISCSI_STATUS_AUTH_FAILED 0x01
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#define ISCSI_STATUS_TGT_FORBIDDEN 0x02
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#define ISCSI_STATUS_TGT_NOT_FOUND 0x03
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#define ISCSI_STATUS_TGT_REMOVED 0x04
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#define ISCSI_STATUS_NO_VERSION 0x05
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#define ISCSI_STATUS_TOO_MANY_CONN 0x06
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#define ISCSI_STATUS_MISSING_FIELDS 0x07
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#define ISCSI_STATUS_CONN_ADD_FAILED 0x08
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#define ISCSI_STATUS_INV_SESSION_TYPE 0x09
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#define ISCSI_STATUS_SESSION_NOT_FOUND 0x0a
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#define ISCSI_STATUS_INV_REQ_TYPE 0x0b
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/* Class-3 (Target Error) */
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#define ISCSI_STATUS_TARGET_ERROR 0x00
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#define ISCSI_STATUS_SVC_UNAVAILABLE 0x01
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#define ISCSI_STATUS_NO_RESOURCES 0x02
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#define ISCSI_RESERVED_TAG 0xffffffff
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struct iscsi_logout_req_hdr {
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u8 opcode;
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u8 flags;
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u16 rsvd1;
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u8 ahslength;
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u8 datalength[3];
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u32 rsvd2[2];
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u32 itt;
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u16 cid;
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u16 rsvd3;
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u32 cmd_sn;
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u32 exp_stat_sn;
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u32 rsvd4[4];
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} __packed;
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struct iscsi_logout_rsp_hdr {
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u8 opcode;
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u8 flags;
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u8 response;
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u8 rsvd1;
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u8 ahslength;
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u8 datalength[3];
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u32 rsvd2[2];
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u32 itt;
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u32 rsvd3;
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u32 stat_sn;
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u32 exp_cmd_sn;
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u32 max_cmd_sn;
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u32 rsvd4;
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u16 time2wait;
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u16 time2retain;
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u32 rsvd5;
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} __packed;
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#define ISCSI_REASON_NO_FULL_FEATURE_PHASE 0x01
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#define ISCSI_REASON_DATA_DIGEST_ERROR 0x02
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#define ISCSI_REASON_DATA_SNACK_REJECT 0x03
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#define ISCSI_REASON_PROTOCOL_ERROR 0x04
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#define ISCSI_REASON_UNSUPPORTED_COMMAND 0x05
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#define ISCSI_REASON_IMMEDIATE_COMMAND_REJECT 0x06
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#define ISCSI_REASON_TASK_IN_PROGRESS 0x07
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#define ISCSI_REASON_INVALID_SNACK 0x08
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#define ISCSI_REASON_INVALID_PDU_FIELD 0x09
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#define ISCSI_REASON_BOOKMARK_REJECT 0x0a
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#define ISCSI_REASON_NEGOTIATION_RESET 0x0b
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#define ISCSI_REASON_WAITING_LOGOUT 0x0c
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struct iscsi_reject_hdr {
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u8 opcode;
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u8 flags;
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u8 reason;
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u8 rsvd1;
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u8 ahslength;
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u8 datalength[3];
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u32 rsvd2[2];
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u32 ffffffff;
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u32 rsvd3;
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u32 stat_sn;
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u32 exp_cmd_sn;
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u32 max_cmd_sn;
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u32 data_sn;
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u32 rsvd4[2];
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} __packed;
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#endif /* ISCSI_HDR_H */
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