[deliverable/linux.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,

	ISCSI_UEVENT_TGT_DSCVR		= UEVENT_BASE + 15,

	/* up events */
	ISCSI_KEVENT_RECV_PDU		= KEVENT_BASE + 1,
	ISCSI_KEVENT_CONN_ERROR		= KEVENT_BASE + 2,
	ISCSI_KEVENT_IF_ERROR		= KEVENT_BASE + 3,
	ISCSI_KEVENT_DESTROY_SESSION	= KEVENT_BASE + 4,
};

enum iscsi_tgt_dscvr {
	ISCSI_TGT_DSCVR_SEND_TARGETS	= 1,
	ISCSI_TGT_DSCVR_ISNS		= 2,
	ISCSI_TGT_DSCVR_SLP		= 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;
		struct msg_tgt_dscvr {
			enum iscsi_tgt_dscvr	type;
			uint32_t	host_no;
			/*
 			 * enable = 1 to establish a new connection
			 * with the server. enable = 0 to disconnect
			 * from the server. Used primarily to switch
			 * from one iSNS server to another.
			 */
			uint32_t	enable;
		} tgt_dscvr;
	} 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_session_destroyed {
			uint32_t	host_no;
			uint32_t	sid;
		} d_session;
		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
01cb225d MC	50	ISCSI_UEVENT_TGT_DSCVR = UEVENT_BASE + 15,
01cb225d MC	51
39e84790 AA	52	/* up events */
	53	ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
	54	ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
	55	ISCSI_KEVENT_IF_ERROR = KEVENT_BASE + 3,
53cb8a1f	56	ISCSI_KEVENT_DESTROY_SESSION = KEVENT_BASE + 4,
39e84790 AA	57	};
39e84790 AA	58
01cb225d MC	59	enum iscsi_tgt_dscvr {
	60	ISCSI_TGT_DSCVR_SEND_TARGETS = 1,
	61	ISCSI_TGT_DSCVR_ISNS = 2,
	62	ISCSI_TGT_DSCVR_SLP = 3,
	63	};
	64
39e84790 AA	65	struct iscsi_uevent {
	66	uint32_t type; /* k/u events type */
	67	uint32_t iferror; /* carries interface or resource errors */
	68	uint64_t transport_handle;
	69
	70	union {
	71	/* messages u -> k */
	72	struct msg_create_session {
	73	uint32_t initial_cmdsn;
	74	} c_session;
	75	struct msg_destroy_session {
39e84790 AA	76	uint32_t sid;
	77	} d_session;
	78	struct msg_create_conn {
39e84790	79	uint32_t sid;
b5c7a12d	80	uint32_t cid;
39e84790 AA	81	} c_conn;
39e84790 AA	82	struct msg_bind_conn {
b5c7a12d MC	83	uint32_t sid;
b5c7a12d MC	84	uint32_t cid;
264faaaa	85	uint64_t transport_eph;
39e84790 AA	86	uint32_t is_leading;
	87	} b_conn;
	88	struct msg_destroy_conn {
b5c7a12d	89	uint32_t sid;
39e84790 AA	90	uint32_t cid;
	91	} d_conn;
	92	struct msg_send_pdu {
b5c7a12d MC	93	uint32_t sid;
b5c7a12d MC	94	uint32_t cid;
39e84790 AA	95	uint32_t hdr_size;
39e84790 AA	96	uint32_t data_size;
39e84790 AA	97	} send_pdu;
39e84790 AA	98	struct msg_set_param {
b5c7a12d MC	99	uint32_t sid;
b5c7a12d MC	100	uint32_t cid;
39e84790	101	uint32_t param; /* enum iscsi_param */
fd7255f5	102	uint32_t len;
39e84790 AA	103	} set_param;
39e84790 AA	104	struct msg_start_conn {
b5c7a12d MC	105	uint32_t sid;
b5c7a12d MC	106	uint32_t cid;
39e84790 AA	107	} start_conn;
39e84790 AA	108	struct msg_stop_conn {
b5c7a12d MC	109	uint32_t sid;
b5c7a12d MC	110	uint32_t cid;
39e84790 AA	111	uint64_t conn_handle;
	112	uint32_t flag;
	113	} stop_conn;
	114	struct msg_get_stats {
b5c7a12d MC	115	uint32_t sid;
b5c7a12d MC	116	uint32_t cid;
39e84790	117	} get_stats;
264faaaa OG	118	struct msg_transport_connect {
	119	uint32_t non_blocking;
	120	} ep_connect;
	121	struct msg_transport_poll {
	122	uint64_t ep_handle;
	123	uint32_t timeout_ms;
	124	} ep_poll;
	125	struct msg_transport_disconnect {
	126	uint64_t ep_handle;
	127	} ep_disconnect;
01cb225d MC	128	struct msg_tgt_dscvr {
	129	enum iscsi_tgt_dscvr type;
	130	uint32_t host_no;
	131	/*
	132	* enable = 1 to establish a new connection
	133	* with the server. enable = 0 to disconnect
	134	* from the server. Used primarily to switch
	135	* from one iSNS server to another.
	136	*/
	137	uint32_t enable;
	138	} tgt_dscvr;
39e84790 AA	139	} u;
	140	union {
	141	/* messages k -> u */
39e84790 AA	142	int retcode;
39e84790 AA	143	struct msg_create_session_ret {
39e84790	144	uint32_t sid;
b5c7a12d	145	uint32_t host_no;
39e84790	146	} c_session_ret;
b5c7a12d MC	147	struct msg_create_conn_ret {
	148	uint32_t sid;
	149	uint32_t cid;
	150	} c_conn_ret;
39e84790	151	struct msg_recv_req {
b5c7a12d MC	152	uint32_t sid;
b5c7a12d MC	153	uint32_t cid;
39e84790	154	uint64_t recv_handle;
39e84790 AA	155	} recv_req;
39e84790 AA	156	struct msg_conn_error {
b5c7a12d MC	157	uint32_t sid;
b5c7a12d MC	158	uint32_t cid;
39e84790 AA	159	uint32_t error; /* enum iscsi_err */
39e84790 AA	160	} connerror;
53cb8a1f MC	161	struct msg_session_destroyed {
	162	uint32_t host_no;
	163	uint32_t sid;
	164	} d_session;
264faaaa OG	165	struct msg_transport_connect_ret {
	166	uint64_t handle;
	167	} ep_connect_ret;
39e84790 AA	168	} r;
	169	} __attribute__ ((aligned (sizeof(uint64_t))));
	170
	171	/*
	172	* Common error codes
	173	*/
	174	enum iscsi_err {
	175	ISCSI_OK = 0,
	176
	177	ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
	178	ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
	179	ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
	180	ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
	181	ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
	182	ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
	183	ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
	184	ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
	185	ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
	186	ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
	187	ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
	188	ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
	189	ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
	190	ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
	191	ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
7996a778 MC	192	ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16,
7996a778 MC	193	ISCSI_ERR_NO_SCSI_CMD = ISCSI_ERR_BASE + 17,
39e84790 AA	194	};
	195
	196	/*
	197	* iSCSI Parameters (RFC3720)
	198	*/
	199	enum iscsi_param {
fd7255f5 MC	200	/* passed in using netlink set param */
	201	ISCSI_PARAM_MAX_RECV_DLENGTH,
	202	ISCSI_PARAM_MAX_XMIT_DLENGTH,
	203	ISCSI_PARAM_HDRDGST_EN,
	204	ISCSI_PARAM_DATADGST_EN,
	205	ISCSI_PARAM_INITIAL_R2T_EN,
	206	ISCSI_PARAM_MAX_R2T,
	207	ISCSI_PARAM_IMM_DATA_EN,
	208	ISCSI_PARAM_FIRST_BURST,
	209	ISCSI_PARAM_MAX_BURST,
	210	ISCSI_PARAM_PDU_INORDER_EN,
	211	ISCSI_PARAM_DATASEQ_INORDER_EN,
	212	ISCSI_PARAM_ERL,
	213	ISCSI_PARAM_IFMARKER_EN,
	214	ISCSI_PARAM_OFMARKER_EN,
8d2860b3	215	ISCSI_PARAM_EXP_STATSN,
fd7255f5 MC	216	ISCSI_PARAM_TARGET_NAME,
	217	ISCSI_PARAM_TPGT,
	218	ISCSI_PARAM_PERSISTENT_ADDRESS,
	219	ISCSI_PARAM_PERSISTENT_PORT,
30a6c652	220	ISCSI_PARAM_SESS_RECOVERY_TMO,
fd7255f5 MC	221
	222	/* pased in through bind conn using transport_fd */
	223	ISCSI_PARAM_CONN_PORT,
	224	ISCSI_PARAM_CONN_ADDRESS,
	225
	226	/* must always be last */
	227	ISCSI_PARAM_MAX,
39e84790	228	};
fd7255f5 MC	229
	230	#define ISCSI_MAX_RECV_DLENGTH (1 << ISCSI_PARAM_MAX_RECV_DLENGTH)
	231	#define ISCSI_MAX_XMIT_DLENGTH (1 << ISCSI_PARAM_MAX_XMIT_DLENGTH)
	232	#define ISCSI_HDRDGST_EN (1 << ISCSI_PARAM_HDRDGST_EN)
	233	#define ISCSI_DATADGST_EN (1 << ISCSI_PARAM_DATADGST_EN)
	234	#define ISCSI_INITIAL_R2T_EN (1 << ISCSI_PARAM_INITIAL_R2T_EN)
	235	#define ISCSI_MAX_R2T (1 << ISCSI_PARAM_MAX_R2T)
	236	#define ISCSI_IMM_DATA_EN (1 << ISCSI_PARAM_IMM_DATA_EN)
	237	#define ISCSI_FIRST_BURST (1 << ISCSI_PARAM_FIRST_BURST)
	238	#define ISCSI_MAX_BURST (1 << ISCSI_PARAM_MAX_BURST)
	239	#define ISCSI_PDU_INORDER_EN (1 << ISCSI_PARAM_PDU_INORDER_EN)
	240	#define ISCSI_DATASEQ_INORDER_EN (1 << ISCSI_PARAM_DATASEQ_INORDER_EN)
	241	#define ISCSI_ERL (1 << ISCSI_PARAM_ERL)
	242	#define ISCSI_IFMARKER_EN (1 << ISCSI_PARAM_IFMARKER_EN)
	243	#define ISCSI_OFMARKER_EN (1 << ISCSI_PARAM_OFMARKER_EN)
8d2860b3	244	#define ISCSI_EXP_STATSN (1 << ISCSI_PARAM_EXP_STATSN)
fd7255f5 MC	245	#define ISCSI_TARGET_NAME (1 << ISCSI_PARAM_TARGET_NAME)
	246	#define ISCSI_TPGT (1 << ISCSI_PARAM_TPGT)
	247	#define ISCSI_PERSISTENT_ADDRESS (1 << ISCSI_PARAM_PERSISTENT_ADDRESS)
	248	#define ISCSI_PERSISTENT_PORT (1 << ISCSI_PARAM_PERSISTENT_PORT)
30a6c652	249	#define ISCSI_SESS_RECOVERY_TMO (1 << ISCSI_PARAM_SESS_RECOVERY_TMO)
fd7255f5 MC	250	#define ISCSI_CONN_PORT (1 << ISCSI_PARAM_CONN_PORT)
fd7255f5 MC	251	#define ISCSI_CONN_ADDRESS (1 << ISCSI_PARAM_CONN_ADDRESS)
39e84790	252
39e84790 AA	253	#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
39e84790 AA	254	#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
7b8631b5 MC	255	#define hostdata_session(_hostdata) (iscsi_ptr((unsigned long )_hostdata))
	256
	257	/**
	258	* iscsi_hostdata - get LLD hostdata from scsi_host
	259	* @_hostdata: pointer to scsi host's hostdata
	260	**/
39e84790 AA	261	#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))
	262
	263	/*
	264	* These flags presents iSCSI Data-Path capabilities.
	265	*/
	266	#define CAP_RECOVERY_L0 0x1
	267	#define CAP_RECOVERY_L1 0x2
	268	#define CAP_RECOVERY_L2 0x4
	269	#define CAP_MULTI_R2T 0x8
	270	#define CAP_HDRDGST 0x10
	271	#define CAP_DATADGST 0x20
	272	#define CAP_MULTI_CONN 0x40
	273	#define CAP_TEXT_NEGO 0x80
	274	#define CAP_MARKERS 0x100
	275
	276	/*
	277	* These flags describes reason of stop_conn() call
	278	*/
	279	#define STOP_CONN_TERM 0x1
	280	#define STOP_CONN_SUSPEND 0x2
	281	#define STOP_CONN_RECOVER 0x3
	282
	283	#define ISCSI_STATS_CUSTOM_MAX 32
	284	#define ISCSI_STATS_CUSTOM_DESC_MAX 64
	285	struct iscsi_stats_custom {
	286	char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
	287	uint64_t value;
	288	};
	289
	290	/*
	291	* struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
	292	*
	293	* Note: this structure contains counters collected on per-connection basis.
	294	*/
	295	struct iscsi_stats {
	296	/* octets */
	297	uint64_t txdata_octets;
	298	uint64_t rxdata_octets;
	299
	300	/* xmit pdus */
	301	uint32_t noptx_pdus;
	302	uint32_t scsicmd_pdus;
	303	uint32_t tmfcmd_pdus;
	304	uint32_t login_pdus;
	305	uint32_t text_pdus;
	306	uint32_t dataout_pdus;
	307	uint32_t logout_pdus;
	308	uint32_t snack_pdus;
	309
	310	/* recv pdus */
	311	uint32_t noprx_pdus;
	312	uint32_t scsirsp_pdus;
	313	uint32_t tmfrsp_pdus;
	314	uint32_t textrsp_pdus;
	315	uint32_t datain_pdus;
	316	uint32_t logoutrsp_pdus;
	317	uint32_t r2t_pdus;
	318	uint32_t async_pdus;
	319	uint32_t rjt_pdus;
	320
	321	/* errors */
	322	uint32_t digest_err;
	323	uint32_t timeout_err;
	324
325	/*
326	* iSCSI Custom Statistics support, i.e. Transport could
327	* extend existing MIB statistics with its own specific statistics
328	* up to ISCSI_STATS_CUSTOM_MAX
329	*/
330	uint32_t custom_length;
331	struct iscsi_stats_custom custom[0]
332	__attribute__ ((aligned (sizeof(uint64_t))));
333	};
334
335	#endif