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scst/iscsi-scst/kernel/iscsi_hdr.h
T
Vladislav Bolkhovitin 7b02f74ee0 The patch below fixes the following classes of checkpatch errors: 
* ERROR: return is not a function, parentheses are not required
* ERROR: that open brace { should be on the previous line

This patch has been tested by verifying that the newly generated patch still
applies without warnings to the 2.6.25.17 kernel and that the patched kernel
still compiles.

Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@512 d57e44dd-8a1f-0410-8b47-8ef2f437770f
2008-10-06 17:18:04 +00:00

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/*
* Copyright (C) 2002 - 2003 Ardis Technolgies <roman@ardistech.com>
* Copyright (C) 2007 - 2008 Vladislav Bolkhovitin
* Copyright (C) 2007 - 2008 CMS Distribution Limited
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2
* of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __ISCSI_HDR_H__
#define __ISCSI_HDR_H__
#include <linux/types.h>
#include <asm/byteorder.h>
#define ISCSI_VERSION 0
#ifndef __packed
#define __packed __attribute__ ((packed))
#endif
struct iscsi_hdr {
u8 opcode; /* 0 */
u8 flags;
u8 spec1[2];
#if defined(__BIG_ENDIAN_BITFIELD)
struct { /* 4 */
unsigned ahslength : 8;
unsigned datalength : 24;
} length;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
u32 length; /* 4 */
#endif
u64 lun; /* 8 */
u32 itt; /* 16 */
u32 ttt; /* 20 */
u32 sn; /* 24 */
u32 exp_sn; /* 28 */
u32 max_sn; /* 32 */
u32 spec3[3]; /* 36 */
} __packed; /* 48 */
/* Opcode encoding bits */
#define ISCSI_OP_RETRY 0x80
#define ISCSI_OP_IMMEDIATE 0x40
#define ISCSI_OPCODE_MASK 0x3F
/* Client to Server Message Opcode values */
#define ISCSI_OP_NOOP_OUT 0x00
#define ISCSI_OP_SCSI_CMD 0x01
#define ISCSI_OP_SCSI_TASK_MGT_MSG 0x02
#define ISCSI_OP_LOGIN_CMD 0x03
#define ISCSI_OP_TEXT_CMD 0x04
#define ISCSI_OP_SCSI_DATA_OUT 0x05
#define ISCSI_OP_LOGOUT_CMD 0x06
#define ISCSI_OP_SNACK_CMD 0x10
/* Server to Client Message Opcode values */
#define ISCSI_OP_NOOP_IN 0x20
#define ISCSI_OP_SCSI_RSP 0x21
#define ISCSI_OP_SCSI_TASK_MGT_RSP 0x22
#define ISCSI_OP_LOGIN_RSP 0x23
#define ISCSI_OP_TEXT_RSP 0x24
#define ISCSI_OP_SCSI_DATA_IN 0x25
#define ISCSI_OP_LOGOUT_RSP 0x26
#define ISCSI_OP_R2T 0x31
#define ISCSI_OP_ASYNC_MSG 0x32
#define ISCSI_OP_REJECT 0x3f
struct iscsi_ahs_hdr {
u16 ahslength;
u8 ahstype;
} __packed;
#define ISCSI_AHSTYPE_CDB 1
#define ISCSI_AHSTYPE_RLENGTH 2
union iscsi_sid {
struct {
u8 isid[6]; /* Initiator Session ID */
u16 tsih; /* Target Session ID */
} id;
u64 id64;
} __packed;
struct iscsi_scsi_cmd_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u64 lun;
u32 itt;
u32 data_length;
u32 cmd_sn;
u32 exp_stat_sn;
u8 scb[16];
} __packed;
#define ISCSI_CMD_FINAL 0x80
#define ISCSI_CMD_READ 0x40
#define ISCSI_CMD_WRITE 0x20
#define ISCSI_CMD_ATTR_MASK 0x07
#define ISCSI_CMD_UNTAGGED 0x00
#define ISCSI_CMD_SIMPLE 0x01
#define ISCSI_CMD_ORDERED 0x02
#define ISCSI_CMD_HEAD_OF_QUEUE 0x03
#define ISCSI_CMD_ACA 0x04
struct iscsi_cdb_ahdr {
u16 ahslength;
u8 ahstype;
u8 reserved;
u8 cdb[0];
} __packed;
struct iscsi_rlength_ahdr {
u16 ahslength;
u8 ahstype;
u8 reserved;
u32 read_length;
} __packed;
struct iscsi_scsi_rsp_hdr {
u8 opcode;
u8 flags;
u8 response;
u8 cmd_status;
u8 ahslength;
u8 datalength[3];
u32 rsvd1[2];
u32 itt;
u32 snack;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u32 exp_data_sn;
u32 bi_residual_count;
u32 residual_count;
} __packed;
#define ISCSI_FLG_RESIDUAL_UNDERFLOW 0x02
#define ISCSI_FLG_RESIDUAL_OVERFLOW 0x04
#define ISCSI_FLG_BIRESIDUAL_UNDERFLOW 0x08
#define ISCSI_FLG_BIRESIDUAL_OVERFLOW 0x10
#define ISCSI_RESPONSE_COMMAND_COMPLETED 0x00
#define ISCSI_RESPONSE_TARGET_FAILURE 0x01
struct iscsi_sense_data {
u16 length;
u8 data[0];
} __packed;
struct iscsi_task_mgt_hdr {
u8 opcode;
u8 function;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u64 lun;
u32 itt;
u32 rtt;
u32 cmd_sn;
u32 exp_stat_sn;
u32 ref_cmd_sn;
u32 exp_data_sn;
u32 rsvd2[2];
} __packed;
#define ISCSI_FUNCTION_MASK 0x7f
#define ISCSI_FUNCTION_ABORT_TASK 1
#define ISCSI_FUNCTION_ABORT_TASK_SET 2
#define ISCSI_FUNCTION_CLEAR_ACA 3
#define ISCSI_FUNCTION_CLEAR_TASK_SET 4
#define ISCSI_FUNCTION_LOGICAL_UNIT_RESET 5
#define ISCSI_FUNCTION_TARGET_WARM_RESET 6
#define ISCSI_FUNCTION_TARGET_COLD_RESET 7
#define ISCSI_FUNCTION_TASK_REASSIGN 8
struct iscsi_task_rsp_hdr {
u8 opcode;
u8 flags;
u8 response;
u8 rsvd1;
u8 ahslength;
u8 datalength[3];
u32 rsvd2[2];
u32 itt;
u32 rsvd3;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u32 rsvd4[3];
} __packed;
#define ISCSI_RESPONSE_FUNCTION_COMPLETE 0
#define ISCSI_RESPONSE_UNKNOWN_TASK 1
#define ISCSI_RESPONSE_UNKNOWN_LUN 2
#define ISCSI_RESPONSE_TASK_ALLEGIANT 3
#define ISCSI_RESPONSE_ALLEGIANCE_REASSIGNMENT_UNSUPPORTED 4
#define ISCSI_RESPONSE_FUNCTION_UNSUPPORTED 5
#define ISCSI_RESPONSE_NO_AUTHORIZATION 6
#define ISCSI_RESPONSE_FUNCTION_REJECTED 255
struct iscsi_data_out_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u64 lun;
u32 itt;
u32 ttt;
u32 rsvd2;
u32 exp_stat_sn;
u32 rsvd3;
u32 data_sn;
u32 buffer_offset;
u32 rsvd4;
} __packed;
struct iscsi_data_in_hdr {
u8 opcode;
u8 flags;
u8 rsvd1;
u8 cmd_status;
u8 ahslength;
u8 datalength[3];
u32 rsvd2[2];
u32 itt;
u32 ttt;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u32 data_sn;
u32 buffer_offset;
u32 residual_count;
} __packed;
#define ISCSI_FLG_STATUS 0x01
struct iscsi_r2t_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u64 lun;
u32 itt;
u32 ttt;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u32 r2t_sn;
u32 buffer_offset;
u32 data_length;
} __packed;
struct iscsi_async_msg_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u64 lun;
u32 ffffffff;
u32 rsvd2;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u8 async_event;
u8 async_vcode;
u16 param1;
u16 param2;
u16 param3;
u32 rsvd3;
} __packed;
#define ISCSI_ASYNC_SCSI 0
#define ISCSI_ASYNC_LOGOUT 1
#define ISCSI_ASYNC_DROP_CONNECTION 2
#define ISCSI_ASYNC_DROP_SESSION 3
#define ISCSI_ASYNC_PARAM_REQUEST 4
#define ISCSI_ASYNC_VENDOR 255
struct iscsi_text_req_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u32 rsvd2[2];
u32 itt;
u32 ttt;
u32 cmd_sn;
u32 exp_stat_sn;
u32 rsvd3[4];
} __packed;
struct iscsi_text_rsp_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u32 rsvd2[2];
u32 itt;
u32 ttt;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u32 rsvd3[3];
} __packed;
struct iscsi_login_req_hdr {
u8 opcode;
u8 flags;
u8 max_version; /* Max. version supported */
u8 min_version; /* Min. version supported */
u8 ahslength;
u8 datalength[3];
union iscsi_sid sid;
u32 itt; /* Initiator Task Tag */
u16 cid; /* Connection ID */
u16 rsvd1;
u32 cmd_sn;
u32 exp_stat_sn;
u32 rsvd2[4];
} __packed;
struct iscsi_login_rsp_hdr {
u8 opcode;
u8 flags;
u8 max_version; /* Max. version supported */
u8 active_version; /* Active version */
u8 ahslength;
u8 datalength[3];
union iscsi_sid sid;
u32 itt; /* Initiator Task Tag */
u32 rsvd1;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u8 status_class; /* see Login RSP ststus classes below */
u8 status_detail; /* see Login RSP Status details below */
u8 rsvd2[10];
} __packed;
#define ISCSI_FLG_FINAL 0x80
#define ISCSI_FLG_TRANSIT 0x80
#define ISCSI_FLG_CSG_SECURITY 0x00
#define ISCSI_FLG_CSG_LOGIN 0x04
#define ISCSI_FLG_CSG_FULL_FEATURE 0x0c
#define ISCSI_FLG_CSG_MASK 0x0c
#define ISCSI_FLG_NSG_SECURITY 0x00
#define ISCSI_FLG_NSG_LOGIN 0x01
#define ISCSI_FLG_NSG_FULL_FEATURE 0x03
#define ISCSI_FLG_NSG_MASK 0x03
/* Login Status response classes */
#define ISCSI_STATUS_SUCCESS 0x00
#define ISCSI_STATUS_REDIRECT 0x01
#define ISCSI_STATUS_INITIATOR_ERR 0x02
#define ISCSI_STATUS_TARGET_ERR 0x03
/* Login Status response detail codes */
/* Class-0 (Success) */
#define ISCSI_STATUS_ACCEPT 0x00
/* Class-1 (Redirection) */
#define ISCSI_STATUS_TGT_MOVED_TEMP 0x01
#define ISCSI_STATUS_TGT_MOVED_PERM 0x02
/* Class-2 (Initiator Error) */
#define ISCSI_STATUS_INIT_ERR 0x00
#define ISCSI_STATUS_AUTH_FAILED 0x01
#define ISCSI_STATUS_TGT_FORBIDDEN 0x02
#define ISCSI_STATUS_TGT_NOT_FOUND 0x03
#define ISCSI_STATUS_TGT_REMOVED 0x04
#define ISCSI_STATUS_NO_VERSION 0x05
#define ISCSI_STATUS_TOO_MANY_CONN 0x06
#define ISCSI_STATUS_MISSING_FIELDS 0x07
#define ISCSI_STATUS_CONN_ADD_FAILED 0x08
#define ISCSI_STATUS_INV_SESSION_TYPE 0x09
#define ISCSI_STATUS_SESSION_NOT_FOUND 0x0a
#define ISCSI_STATUS_INV_REQ_TYPE 0x0b
/* Class-3 (Target Error) */
#define ISCSI_STATUS_TARGET_ERROR 0x00
#define ISCSI_STATUS_SVC_UNAVAILABLE 0x01
#define ISCSI_STATUS_NO_RESOURCES 0x02
struct iscsi_logout_req_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u32 rsvd2[2];
u32 itt;
u16 cid;
u16 rsvd3;
u32 cmd_sn;
u32 exp_stat_sn;
u32 rsvd4[4];
} __packed;
struct iscsi_logout_rsp_hdr {
u8 opcode;
u8 flags;
u8 response;
u8 rsvd1;
u8 ahslength;
u8 datalength[3];
u32 rsvd2[2];
u32 itt;
u32 rsvd3;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u32 rsvd4;
u16 time2wait;
u16 time2retain;
u32 rsvd5;
} __packed;
struct iscsi_snack_req_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u32 rsvd2[2];
u32 itt;
u32 ttt;
u32 rsvd3;
u32 exp_stat_sn;
u32 rsvd4[2];
u32 beg_run;
u32 run_length;
} __packed;
struct iscsi_reject_hdr {
u8 opcode;
u8 flags;
u8 reason;
u8 rsvd1;
u8 ahslength;
u8 datalength[3];
u32 rsvd2[2];
u32 ffffffff;
u32 rsvd3;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u32 data_sn;
u32 rsvd4[2];
} __packed;
#define ISCSI_REASON_RESERVED 0x01
#define ISCSI_REASON_DATA_DIGEST_ERROR 0x02
#define ISCSI_REASON_DATA_SNACK_REJECT 0x03
#define ISCSI_REASON_PROTOCOL_ERROR 0x04
#define ISCSI_REASON_UNSUPPORTED_COMMAND 0x05
#define ISCSI_REASON_IMMEDIATE_COMMAND_REJECT 0x06
#define ISCSI_REASON_TASK_IN_PROGRESS 0x07
#define ISCSI_REASON_INVALID_DATA_ACK 0x08
#define ISCSI_REASON_INVALID_PDU_FIELD 0x09
#define ISCSI_REASON_OUT_OF_RESOURCES 0x0a
#define ISCSI_REASON_NEGOTIATION_RESET 0x0b
#define ISCSI_REASON_WAITING_LOGOUT 0x0c
struct iscsi_nop_out_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u64 lun;
u32 itt;
u32 ttt;
u32 cmd_sn;
u32 exp_stat_sn;
u32 rsvd2[4];
} __packed;
struct iscsi_nop_in_hdr {
u8 opcode;
u8 flags;
u16 rsvd1;
u8 ahslength;
u8 datalength[3];
u64 lun;
u32 itt;
u32 ttt;
u32 stat_sn;
u32 exp_cmd_sn;
u32 max_cmd_sn;
u32 rsvd2[3];
} __packed;
#define ISCSI_RESERVED_TAG (0xffffffffU)
#define cmnd_hdr(cmnd) ((struct iscsi_scsi_cmd_hdr *) (&((cmnd)->pdu.bhs)))
#define cmnd_ttt(cmnd) cpu_to_be32((cmnd)->pdu.bhs.ttt)
#define cmnd_itt(cmnd) cpu_to_be32((cmnd)->pdu.bhs.itt)
#define cmnd_opcode(cmnd) ((cmnd)->pdu.bhs.opcode & ISCSI_OPCODE_MASK)
#define cmnd_scsicode(cmnd) (cmnd_hdr((cmnd))->scb[0])
#endif /* __ISCSI_HDR_H__ */
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