[mirror_ubuntu-zesty-kernel.git] / include / scsi / iscsi_if.h

/*
 * iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
 *
 * Copyright (C) 2005 Dmitry Yusupov
 * Copyright (C) 2005 Alex Aizman
 * maintained by open-iscsi@googlegroups.com
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 *
 * See the file COPYING included with this distribution for more details.
 */

#ifndef ISCSI_IF_H
#define ISCSI_IF_H

#include <scsi/iscsi_proto.h>

#define UEVENT_BASE			10
#define KEVENT_BASE			100
#define ISCSI_ERR_BASE			1000

enum iscsi_uevent_e {
	ISCSI_UEVENT_UNKNOWN		= 0,

	/* down events */
	ISCSI_UEVENT_CREATE_SESSION	= UEVENT_BASE + 1,
	ISCSI_UEVENT_DESTROY_SESSION	= UEVENT_BASE + 2,
	ISCSI_UEVENT_CREATE_CONN	= UEVENT_BASE + 3,
	ISCSI_UEVENT_DESTROY_CONN	= UEVENT_BASE + 4,
	ISCSI_UEVENT_BIND_CONN		= UEVENT_BASE + 5,
	ISCSI_UEVENT_SET_PARAM		= UEVENT_BASE + 6,
	ISCSI_UEVENT_START_CONN		= UEVENT_BASE + 7,
	ISCSI_UEVENT_STOP_CONN		= UEVENT_BASE + 8,
	ISCSI_UEVENT_SEND_PDU		= UEVENT_BASE + 9,
	ISCSI_UEVENT_GET_STATS		= UEVENT_BASE + 10,
	ISCSI_UEVENT_GET_PARAM		= UEVENT_BASE + 11,

	ISCSI_UEVENT_TRANSPORT_EP_CONNECT	= UEVENT_BASE + 12,
	ISCSI_UEVENT_TRANSPORT_EP_POLL		= UEVENT_BASE + 13,
	ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT	= UEVENT_BASE + 14,

	/* up events */
	ISCSI_KEVENT_RECV_PDU		= KEVENT_BASE + 1,
	ISCSI_KEVENT_CONN_ERROR		= KEVENT_BASE + 2,
	ISCSI_KEVENT_IF_ERROR		= KEVENT_BASE + 3,
};

struct iscsi_uevent {
	uint32_t type; /* k/u events type */
	uint32_t iferror; /* carries interface or resource errors */
	uint64_t transport_handle;

	union {
		/* messages u -> k */
		struct msg_create_session {
			uint32_t	initial_cmdsn;
		} c_session;
		struct msg_destroy_session {
			uint32_t	sid;
		} d_session;
		struct msg_create_conn {
			uint32_t	sid;
			uint32_t	cid;
		} c_conn;
		struct msg_bind_conn {
			uint32_t	sid;
			uint32_t	cid;
			uint64_t	transport_eph;
			uint32_t	is_leading;
		} b_conn;
		struct msg_destroy_conn {
			uint32_t	sid;
			uint32_t	cid;
		} d_conn;
		struct msg_send_pdu {
			uint32_t	sid;
			uint32_t	cid;
			uint32_t	hdr_size;
			uint32_t	data_size;
		} send_pdu;
		struct msg_set_param {
			uint32_t	sid;
			uint32_t	cid;
			uint32_t	param; /* enum iscsi_param */
			uint32_t	len;
		} set_param;
		struct msg_start_conn {
			uint32_t	sid;
			uint32_t	cid;
		} start_conn;
		struct msg_stop_conn {
			uint32_t	sid;
			uint32_t	cid;
			uint64_t	conn_handle;
			uint32_t	flag;
		} stop_conn;
		struct msg_get_stats {
			uint32_t	sid;
			uint32_t	cid;
		} get_stats;
		struct msg_transport_connect {
			uint32_t	non_blocking;
		} ep_connect;
		struct msg_transport_poll {
			uint64_t	ep_handle;
			uint32_t	timeout_ms;
		} ep_poll;
		struct msg_transport_disconnect {
			uint64_t	ep_handle;
		} ep_disconnect;
	} u;
	union {
		/* messages k -> u */
		int			retcode;
		struct msg_create_session_ret {
			uint32_t	sid;
			uint32_t	host_no;
		} c_session_ret;
		struct msg_create_conn_ret {
			uint32_t	sid;
			uint32_t	cid;
		} c_conn_ret;
		struct msg_recv_req {
			uint32_t	sid;
			uint32_t	cid;
			uint64_t	recv_handle;
		} recv_req;
		struct msg_conn_error {
			uint32_t	sid;
			uint32_t	cid;
			uint32_t	error; /* enum iscsi_err */
		} connerror;
		struct msg_transport_connect_ret {
			uint64_t	handle;
		} ep_connect_ret;
	} r;
} __attribute__ ((aligned (sizeof(uint64_t))));

/*
 * Common error codes
 */
enum iscsi_err {
	ISCSI_OK			= 0,

	ISCSI_ERR_DATASN		= ISCSI_ERR_BASE + 1,
	ISCSI_ERR_DATA_OFFSET		= ISCSI_ERR_BASE + 2,
	ISCSI_ERR_MAX_CMDSN		= ISCSI_ERR_BASE + 3,
	ISCSI_ERR_EXP_CMDSN		= ISCSI_ERR_BASE + 4,
	ISCSI_ERR_BAD_OPCODE		= ISCSI_ERR_BASE + 5,
	ISCSI_ERR_DATALEN		= ISCSI_ERR_BASE + 6,
	ISCSI_ERR_AHSLEN		= ISCSI_ERR_BASE + 7,
	ISCSI_ERR_PROTO			= ISCSI_ERR_BASE + 8,
	ISCSI_ERR_LUN			= ISCSI_ERR_BASE + 9,
	ISCSI_ERR_BAD_ITT		= ISCSI_ERR_BASE + 10,
	ISCSI_ERR_CONN_FAILED		= ISCSI_ERR_BASE + 11,
	ISCSI_ERR_R2TSN			= ISCSI_ERR_BASE + 12,
	ISCSI_ERR_SESSION_FAILED	= ISCSI_ERR_BASE + 13,
	ISCSI_ERR_HDR_DGST		= ISCSI_ERR_BASE + 14,
	ISCSI_ERR_DATA_DGST		= ISCSI_ERR_BASE + 15,
	ISCSI_ERR_PARAM_NOT_FOUND	= ISCSI_ERR_BASE + 16,
	ISCSI_ERR_NO_SCSI_CMD		= ISCSI_ERR_BASE + 17,
};

/*
 * iSCSI Parameters (RFC3720)
 */
enum iscsi_param {
	/* passed in using netlink set param */
	ISCSI_PARAM_MAX_RECV_DLENGTH,
	ISCSI_PARAM_MAX_XMIT_DLENGTH,
	ISCSI_PARAM_HDRDGST_EN,
	ISCSI_PARAM_DATADGST_EN,
	ISCSI_PARAM_INITIAL_R2T_EN,
	ISCSI_PARAM_MAX_R2T,
	ISCSI_PARAM_IMM_DATA_EN,
	ISCSI_PARAM_FIRST_BURST,
	ISCSI_PARAM_MAX_BURST,
	ISCSI_PARAM_PDU_INORDER_EN,
	ISCSI_PARAM_DATASEQ_INORDER_EN,
	ISCSI_PARAM_ERL,
	ISCSI_PARAM_IFMARKER_EN,
	ISCSI_PARAM_OFMARKER_EN,
	ISCSI_PARAM_EXP_STATSN,
	ISCSI_PARAM_TARGET_NAME,
	ISCSI_PARAM_TPGT,
	ISCSI_PARAM_PERSISTENT_ADDRESS,
	ISCSI_PARAM_PERSISTENT_PORT,
	ISCSI_PARAM_SESS_RECOVERY_TMO,

	/* pased in through bind conn using transport_fd */
	ISCSI_PARAM_CONN_PORT,
	ISCSI_PARAM_CONN_ADDRESS,

	/* must always be last */
	ISCSI_PARAM_MAX,
};

#define ISCSI_MAX_RECV_DLENGTH		(1 << ISCSI_PARAM_MAX_RECV_DLENGTH)
#define ISCSI_MAX_XMIT_DLENGTH		(1 << ISCSI_PARAM_MAX_XMIT_DLENGTH)
#define ISCSI_HDRDGST_EN		(1 << ISCSI_PARAM_HDRDGST_EN)
#define ISCSI_DATADGST_EN		(1 << ISCSI_PARAM_DATADGST_EN)
#define ISCSI_INITIAL_R2T_EN		(1 << ISCSI_PARAM_INITIAL_R2T_EN)
#define ISCSI_MAX_R2T			(1 << ISCSI_PARAM_MAX_R2T)
#define ISCSI_IMM_DATA_EN		(1 << ISCSI_PARAM_IMM_DATA_EN)
#define ISCSI_FIRST_BURST		(1 << ISCSI_PARAM_FIRST_BURST)
#define ISCSI_MAX_BURST			(1 << ISCSI_PARAM_MAX_BURST)
#define ISCSI_PDU_INORDER_EN		(1 << ISCSI_PARAM_PDU_INORDER_EN)
#define ISCSI_DATASEQ_INORDER_EN	(1 << ISCSI_PARAM_DATASEQ_INORDER_EN)
#define ISCSI_ERL			(1 << ISCSI_PARAM_ERL)
#define ISCSI_IFMARKER_EN		(1 << ISCSI_PARAM_IFMARKER_EN)
#define ISCSI_OFMARKER_EN		(1 << ISCSI_PARAM_OFMARKER_EN)
#define ISCSI_EXP_STATSN		(1 << ISCSI_PARAM_EXP_STATSN)
#define ISCSI_TARGET_NAME		(1 << ISCSI_PARAM_TARGET_NAME)
#define ISCSI_TPGT			(1 << ISCSI_PARAM_TPGT)
#define ISCSI_PERSISTENT_ADDRESS	(1 << ISCSI_PARAM_PERSISTENT_ADDRESS)
#define ISCSI_PERSISTENT_PORT		(1 << ISCSI_PARAM_PERSISTENT_PORT)
#define ISCSI_SESS_RECOVERY_TMO		(1 << ISCSI_PARAM_SESS_RECOVERY_TMO)
#define ISCSI_CONN_PORT			(1 << ISCSI_PARAM_CONN_PORT)
#define ISCSI_CONN_ADDRESS		(1 << ISCSI_PARAM_CONN_ADDRESS)

#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
#define hostdata_session(_hostdata) (iscsi_ptr(*(unsigned long *)_hostdata))

/**
 * iscsi_hostdata - get LLD hostdata from scsi_host
 * @_hostdata: pointer to scsi host's hostdata
 **/
#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))

/*
 * These flags presents iSCSI Data-Path capabilities.
 */
#define CAP_RECOVERY_L0		0x1
#define CAP_RECOVERY_L1		0x2
#define CAP_RECOVERY_L2		0x4
#define CAP_MULTI_R2T		0x8
#define CAP_HDRDGST		0x10
#define CAP_DATADGST		0x20
#define CAP_MULTI_CONN		0x40
#define CAP_TEXT_NEGO		0x80
#define CAP_MARKERS		0x100

/*
 * These flags describes reason of stop_conn() call
 */
#define STOP_CONN_TERM		0x1
#define STOP_CONN_SUSPEND	0x2
#define STOP_CONN_RECOVER	0x3

#define ISCSI_STATS_CUSTOM_MAX		32
#define ISCSI_STATS_CUSTOM_DESC_MAX	64
struct iscsi_stats_custom {
	char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
	uint64_t value;
};

/*
 * struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
 *
 * Note: this structure contains counters collected on per-connection basis.
 */
struct iscsi_stats {
	/* octets */
	uint64_t txdata_octets;
	uint64_t rxdata_octets;

	/* xmit pdus */
	uint32_t noptx_pdus;
	uint32_t scsicmd_pdus;
	uint32_t tmfcmd_pdus;
	uint32_t login_pdus;
	uint32_t text_pdus;
	uint32_t dataout_pdus;
	uint32_t logout_pdus;
	uint32_t snack_pdus;

	/* recv pdus */
	uint32_t noprx_pdus;
	uint32_t scsirsp_pdus;
	uint32_t tmfrsp_pdus;
	uint32_t textrsp_pdus;
	uint32_t datain_pdus;
	uint32_t logoutrsp_pdus;
	uint32_t r2t_pdus;
	uint32_t async_pdus;
	uint32_t rjt_pdus;

	/* errors */
	uint32_t digest_err;
	uint32_t timeout_err;

	/*
	 * iSCSI Custom Statistics support, i.e. Transport could
	 * extend existing MIB statistics with its own specific statistics
	 * up to ISCSI_STATS_CUSTOM_MAX
	 */
	uint32_t custom_length;
	struct iscsi_stats_custom custom[0]
		__attribute__ ((aligned (sizeof(uint64_t))));
};

#endif
Commit	Line	Data
39e84790 AA	1	/*
	2	* iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
	3	*
	4	* Copyright (C) 2005 Dmitry Yusupov
	5	* Copyright (C) 2005 Alex Aizman
	6	* maintained by open-iscsi@googlegroups.com
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published
	10	* by the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	* See the file COPYING included with this distribution for more details.
	19	*/
	20
	21	#ifndef ISCSI_IF_H
	22	#define ISCSI_IF_H
	23
	24	#include <scsi/iscsi_proto.h>
	25
	26	#define UEVENT_BASE 10
	27	#define KEVENT_BASE 100
	28	#define ISCSI_ERR_BASE 1000
	29
	30	enum iscsi_uevent_e {
	31	ISCSI_UEVENT_UNKNOWN = 0,
	32
	33	/* down events */
	34	ISCSI_UEVENT_CREATE_SESSION = UEVENT_BASE + 1,
	35	ISCSI_UEVENT_DESTROY_SESSION = UEVENT_BASE + 2,
	36	ISCSI_UEVENT_CREATE_CONN = UEVENT_BASE + 3,
	37	ISCSI_UEVENT_DESTROY_CONN = UEVENT_BASE + 4,
	38	ISCSI_UEVENT_BIND_CONN = UEVENT_BASE + 5,
	39	ISCSI_UEVENT_SET_PARAM = UEVENT_BASE + 6,
	40	ISCSI_UEVENT_START_CONN = UEVENT_BASE + 7,
	41	ISCSI_UEVENT_STOP_CONN = UEVENT_BASE + 8,
	42	ISCSI_UEVENT_SEND_PDU = UEVENT_BASE + 9,
	43	ISCSI_UEVENT_GET_STATS = UEVENT_BASE + 10,
	44	ISCSI_UEVENT_GET_PARAM = UEVENT_BASE + 11,
	45
264faaaa OG	46	ISCSI_UEVENT_TRANSPORT_EP_CONNECT = UEVENT_BASE + 12,
	47	ISCSI_UEVENT_TRANSPORT_EP_POLL = UEVENT_BASE + 13,
	48	ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT = UEVENT_BASE + 14,
	49
39e84790 AA	50	/* up events */
	51	ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
	52	ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
	53	ISCSI_KEVENT_IF_ERROR = KEVENT_BASE + 3,
	54	};
	55
	56	struct iscsi_uevent {
	57	uint32_t type; /* k/u events type */
	58	uint32_t iferror; /* carries interface or resource errors */
	59	uint64_t transport_handle;
	60
	61	union {
	62	/* messages u -> k */
	63	struct msg_create_session {
	64	uint32_t initial_cmdsn;
	65	} c_session;
	66	struct msg_destroy_session {
39e84790 AA	67	uint32_t sid;
	68	} d_session;
	69	struct msg_create_conn {
39e84790	70	uint32_t sid;
b5c7a12d	71	uint32_t cid;
39e84790 AA	72	} c_conn;
39e84790 AA	73	struct msg_bind_conn {
b5c7a12d MC	74	uint32_t sid;
b5c7a12d MC	75	uint32_t cid;
264faaaa	76	uint64_t transport_eph;
39e84790 AA	77	uint32_t is_leading;
	78	} b_conn;
	79	struct msg_destroy_conn {
b5c7a12d	80	uint32_t sid;
39e84790 AA	81	uint32_t cid;
	82	} d_conn;
	83	struct msg_send_pdu {
b5c7a12d MC	84	uint32_t sid;
b5c7a12d MC	85	uint32_t cid;
39e84790 AA	86	uint32_t hdr_size;
39e84790 AA	87	uint32_t data_size;
39e84790 AA	88	} send_pdu;
39e84790 AA	89	struct msg_set_param {
b5c7a12d MC	90	uint32_t sid;
b5c7a12d MC	91	uint32_t cid;
39e84790	92	uint32_t param; /* enum iscsi_param */
fd7255f5	93	uint32_t len;
39e84790 AA	94	} set_param;
39e84790 AA	95	struct msg_start_conn {
b5c7a12d MC	96	uint32_t sid;
b5c7a12d MC	97	uint32_t cid;
39e84790 AA	98	} start_conn;
39e84790 AA	99	struct msg_stop_conn {
b5c7a12d MC	100	uint32_t sid;
b5c7a12d MC	101	uint32_t cid;
39e84790 AA	102	uint64_t conn_handle;
	103	uint32_t flag;
	104	} stop_conn;
	105	struct msg_get_stats {
b5c7a12d MC	106	uint32_t sid;
b5c7a12d MC	107	uint32_t cid;
39e84790	108	} get_stats;
264faaaa OG	109	struct msg_transport_connect {
	110	uint32_t non_blocking;
	111	} ep_connect;
	112	struct msg_transport_poll {
	113	uint64_t ep_handle;
	114	uint32_t timeout_ms;
	115	} ep_poll;
	116	struct msg_transport_disconnect {
	117	uint64_t ep_handle;
	118	} ep_disconnect;
39e84790 AA	119	} u;
	120	union {
	121	/* messages k -> u */
39e84790 AA	122	int retcode;
39e84790 AA	123	struct msg_create_session_ret {
39e84790	124	uint32_t sid;
b5c7a12d	125	uint32_t host_no;
39e84790	126	} c_session_ret;
b5c7a12d MC	127	struct msg_create_conn_ret {
	128	uint32_t sid;
	129	uint32_t cid;
	130	} c_conn_ret;
39e84790	131	struct msg_recv_req {
b5c7a12d MC	132	uint32_t sid;
b5c7a12d MC	133	uint32_t cid;
39e84790	134	uint64_t recv_handle;
39e84790 AA	135	} recv_req;
39e84790 AA	136	struct msg_conn_error {
b5c7a12d MC	137	uint32_t sid;
b5c7a12d MC	138	uint32_t cid;
39e84790 AA	139	uint32_t error; /* enum iscsi_err */
39e84790 AA	140	} connerror;
264faaaa OG	141	struct msg_transport_connect_ret {
	142	uint64_t handle;
	143	} ep_connect_ret;
39e84790 AA	144	} r;
	145	} __attribute__ ((aligned (sizeof(uint64_t))));
	146
	147	/*
	148	* Common error codes
	149	*/
	150	enum iscsi_err {
	151	ISCSI_OK = 0,
	152
	153	ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
	154	ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
	155	ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
	156	ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
	157	ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
	158	ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
	159	ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
	160	ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
	161	ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
	162	ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
	163	ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
	164	ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
	165	ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
	166	ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
	167	ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
7996a778 MC	168	ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16,
7996a778 MC	169	ISCSI_ERR_NO_SCSI_CMD = ISCSI_ERR_BASE + 17,
39e84790 AA	170	};
	171
	172	/*
	173	* iSCSI Parameters (RFC3720)
	174	*/
	175	enum iscsi_param {
fd7255f5 MC	176	/* passed in using netlink set param */
	177	ISCSI_PARAM_MAX_RECV_DLENGTH,
	178	ISCSI_PARAM_MAX_XMIT_DLENGTH,
	179	ISCSI_PARAM_HDRDGST_EN,
	180	ISCSI_PARAM_DATADGST_EN,
	181	ISCSI_PARAM_INITIAL_R2T_EN,
	182	ISCSI_PARAM_MAX_R2T,
	183	ISCSI_PARAM_IMM_DATA_EN,
	184	ISCSI_PARAM_FIRST_BURST,
	185	ISCSI_PARAM_MAX_BURST,
	186	ISCSI_PARAM_PDU_INORDER_EN,
	187	ISCSI_PARAM_DATASEQ_INORDER_EN,
	188	ISCSI_PARAM_ERL,
	189	ISCSI_PARAM_IFMARKER_EN,
	190	ISCSI_PARAM_OFMARKER_EN,
8d2860b3	191	ISCSI_PARAM_EXP_STATSN,
fd7255f5 MC	192	ISCSI_PARAM_TARGET_NAME,
	193	ISCSI_PARAM_TPGT,
	194	ISCSI_PARAM_PERSISTENT_ADDRESS,
	195	ISCSI_PARAM_PERSISTENT_PORT,
30a6c652	196	ISCSI_PARAM_SESS_RECOVERY_TMO,
fd7255f5 MC	197
	198	/* pased in through bind conn using transport_fd */
	199	ISCSI_PARAM_CONN_PORT,
	200	ISCSI_PARAM_CONN_ADDRESS,
	201
	202	/* must always be last */
	203	ISCSI_PARAM_MAX,
39e84790	204	};
fd7255f5 MC	205
	206	#define ISCSI_MAX_RECV_DLENGTH (1 << ISCSI_PARAM_MAX_RECV_DLENGTH)
	207	#define ISCSI_MAX_XMIT_DLENGTH (1 << ISCSI_PARAM_MAX_XMIT_DLENGTH)
	208	#define ISCSI_HDRDGST_EN (1 << ISCSI_PARAM_HDRDGST_EN)
	209	#define ISCSI_DATADGST_EN (1 << ISCSI_PARAM_DATADGST_EN)
	210	#define ISCSI_INITIAL_R2T_EN (1 << ISCSI_PARAM_INITIAL_R2T_EN)
	211	#define ISCSI_MAX_R2T (1 << ISCSI_PARAM_MAX_R2T)
	212	#define ISCSI_IMM_DATA_EN (1 << ISCSI_PARAM_IMM_DATA_EN)
	213	#define ISCSI_FIRST_BURST (1 << ISCSI_PARAM_FIRST_BURST)
	214	#define ISCSI_MAX_BURST (1 << ISCSI_PARAM_MAX_BURST)
	215	#define ISCSI_PDU_INORDER_EN (1 << ISCSI_PARAM_PDU_INORDER_EN)
	216	#define ISCSI_DATASEQ_INORDER_EN (1 << ISCSI_PARAM_DATASEQ_INORDER_EN)
	217	#define ISCSI_ERL (1 << ISCSI_PARAM_ERL)
	218	#define ISCSI_IFMARKER_EN (1 << ISCSI_PARAM_IFMARKER_EN)
	219	#define ISCSI_OFMARKER_EN (1 << ISCSI_PARAM_OFMARKER_EN)
8d2860b3	220	#define ISCSI_EXP_STATSN (1 << ISCSI_PARAM_EXP_STATSN)
fd7255f5 MC	221	#define ISCSI_TARGET_NAME (1 << ISCSI_PARAM_TARGET_NAME)
	222	#define ISCSI_TPGT (1 << ISCSI_PARAM_TPGT)
	223	#define ISCSI_PERSISTENT_ADDRESS (1 << ISCSI_PARAM_PERSISTENT_ADDRESS)
	224	#define ISCSI_PERSISTENT_PORT (1 << ISCSI_PARAM_PERSISTENT_PORT)
30a6c652	225	#define ISCSI_SESS_RECOVERY_TMO (1 << ISCSI_PARAM_SESS_RECOVERY_TMO)
fd7255f5 MC	226	#define ISCSI_CONN_PORT (1 << ISCSI_PARAM_CONN_PORT)
fd7255f5 MC	227	#define ISCSI_CONN_ADDRESS (1 << ISCSI_PARAM_CONN_ADDRESS)
39e84790	228
39e84790 AA	229	#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
39e84790 AA	230	#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
7b8631b5 MC	231	#define hostdata_session(_hostdata) (iscsi_ptr((unsigned long )_hostdata))
	232
	233	/**
	234	* iscsi_hostdata - get LLD hostdata from scsi_host
	235	* @_hostdata: pointer to scsi host's hostdata
	236	**/
39e84790 AA	237	#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))
	238
	239	/*
	240	* These flags presents iSCSI Data-Path capabilities.
	241	*/
	242	#define CAP_RECOVERY_L0 0x1
	243	#define CAP_RECOVERY_L1 0x2
	244	#define CAP_RECOVERY_L2 0x4
	245	#define CAP_MULTI_R2T 0x8
	246	#define CAP_HDRDGST 0x10
	247	#define CAP_DATADGST 0x20
	248	#define CAP_MULTI_CONN 0x40
	249	#define CAP_TEXT_NEGO 0x80
	250	#define CAP_MARKERS 0x100
	251
	252	/*
	253	* These flags describes reason of stop_conn() call
	254	*/
	255	#define STOP_CONN_TERM 0x1
	256	#define STOP_CONN_SUSPEND 0x2
	257	#define STOP_CONN_RECOVER 0x3
	258
	259	#define ISCSI_STATS_CUSTOM_MAX 32
	260	#define ISCSI_STATS_CUSTOM_DESC_MAX 64
	261	struct iscsi_stats_custom {
	262	char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
	263	uint64_t value;
	264	};
	265
	266	/*
	267	* struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
	268	*
	269	* Note: this structure contains counters collected on per-connection basis.
	270	*/
	271	struct iscsi_stats {
	272	/* octets */
	273	uint64_t txdata_octets;
	274	uint64_t rxdata_octets;
	275
	276	/* xmit pdus */
	277	uint32_t noptx_pdus;
	278	uint32_t scsicmd_pdus;
	279	uint32_t tmfcmd_pdus;
	280	uint32_t login_pdus;
	281	uint32_t text_pdus;
	282	uint32_t dataout_pdus;
	283	uint32_t logout_pdus;
	284	uint32_t snack_pdus;
	285
	286	/* recv pdus */
	287	uint32_t noprx_pdus;
	288	uint32_t scsirsp_pdus;
	289	uint32_t tmfrsp_pdus;
	290	uint32_t textrsp_pdus;
	291	uint32_t datain_pdus;
	292	uint32_t logoutrsp_pdus;
	293	uint32_t r2t_pdus;
	294	uint32_t async_pdus;
	295	uint32_t rjt_pdus;
	296
	297	/* errors */
	298	uint32_t digest_err;
	299	uint32_t timeout_err;
	300
301	/*
302	* iSCSI Custom Statistics support, i.e. Transport could
303	* extend existing MIB statistics with its own specific statistics
304	* up to ISCSI_STATS_CUSTOM_MAX
305	*/
306	uint32_t custom_length;
307	struct iscsi_stats_custom custom[0]
308	__attribute__ ((aligned (sizeof(uint64_t))));
309	};
310
311	#endif