[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,

	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,
};

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_transport_connect_ret {
			uint64_t	handle;
		} ep_connect_ret;
		struct msg_tgt_dscvr_ret {
			/*
			 * session/connection pair used to reference
			 * the connection to server
			 */
			uint32_t	sid;
			uint32_t	cid;
			union {
				struct isns {
					/* port # for conn to iSNS server */
					uint16_t isns_port;
					/* listening port to receive SCNs */
					uint16_t scn_port;
					/* listening port to receive ESIs */
					uint16_t esi_port;
				} isns_attrib;
			} u;
		} tgt_dscvr_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,
	56	};
	57
01cb225d MC	58	enum iscsi_tgt_dscvr {
	59	ISCSI_TGT_DSCVR_SEND_TARGETS = 1,
	60	ISCSI_TGT_DSCVR_ISNS = 2,
	61	ISCSI_TGT_DSCVR_SLP = 3,
	62	};
	63
39e84790 AA	64	struct iscsi_uevent {
	65	uint32_t type; /* k/u events type */
	66	uint32_t iferror; /* carries interface or resource errors */
	67	uint64_t transport_handle;
	68
	69	union {
	70	/* messages u -> k */
	71	struct msg_create_session {
	72	uint32_t initial_cmdsn;
	73	} c_session;
	74	struct msg_destroy_session {
39e84790 AA	75	uint32_t sid;
	76	} d_session;
	77	struct msg_create_conn {
39e84790	78	uint32_t sid;
b5c7a12d	79	uint32_t cid;
39e84790 AA	80	} c_conn;
39e84790 AA	81	struct msg_bind_conn {
b5c7a12d MC	82	uint32_t sid;
b5c7a12d MC	83	uint32_t cid;
264faaaa	84	uint64_t transport_eph;
39e84790 AA	85	uint32_t is_leading;
	86	} b_conn;
	87	struct msg_destroy_conn {
b5c7a12d	88	uint32_t sid;
39e84790 AA	89	uint32_t cid;
	90	} d_conn;
	91	struct msg_send_pdu {
b5c7a12d MC	92	uint32_t sid;
b5c7a12d MC	93	uint32_t cid;
39e84790 AA	94	uint32_t hdr_size;
39e84790 AA	95	uint32_t data_size;
39e84790 AA	96	} send_pdu;
39e84790 AA	97	struct msg_set_param {
b5c7a12d MC	98	uint32_t sid;
b5c7a12d MC	99	uint32_t cid;
39e84790	100	uint32_t param; /* enum iscsi_param */
fd7255f5	101	uint32_t len;
39e84790 AA	102	} set_param;
39e84790 AA	103	struct msg_start_conn {
b5c7a12d MC	104	uint32_t sid;
b5c7a12d MC	105	uint32_t cid;
39e84790 AA	106	} start_conn;
39e84790 AA	107	struct msg_stop_conn {
b5c7a12d MC	108	uint32_t sid;
b5c7a12d MC	109	uint32_t cid;
39e84790 AA	110	uint64_t conn_handle;
	111	uint32_t flag;
	112	} stop_conn;
	113	struct msg_get_stats {
b5c7a12d MC	114	uint32_t sid;
b5c7a12d MC	115	uint32_t cid;
39e84790	116	} get_stats;
264faaaa OG	117	struct msg_transport_connect {
	118	uint32_t non_blocking;
	119	} ep_connect;
	120	struct msg_transport_poll {
	121	uint64_t ep_handle;
	122	uint32_t timeout_ms;
	123	} ep_poll;
	124	struct msg_transport_disconnect {
	125	uint64_t ep_handle;
	126	} ep_disconnect;
01cb225d MC	127	struct msg_tgt_dscvr {
	128	enum iscsi_tgt_dscvr type;
	129	uint32_t host_no;
	130	/*
	131	* enable = 1 to establish a new connection
	132	* with the server. enable = 0 to disconnect
	133	* from the server. Used primarily to switch
	134	* from one iSNS server to another.
	135	*/
	136	uint32_t enable;
	137	} tgt_dscvr;
39e84790 AA	138	} u;
	139	union {
	140	/* messages k -> u */
39e84790 AA	141	int retcode;
39e84790 AA	142	struct msg_create_session_ret {
39e84790	143	uint32_t sid;
b5c7a12d	144	uint32_t host_no;
39e84790	145	} c_session_ret;
b5c7a12d MC	146	struct msg_create_conn_ret {
	147	uint32_t sid;
	148	uint32_t cid;
	149	} c_conn_ret;
39e84790	150	struct msg_recv_req {
b5c7a12d MC	151	uint32_t sid;
b5c7a12d MC	152	uint32_t cid;
39e84790	153	uint64_t recv_handle;
39e84790 AA	154	} recv_req;
39e84790 AA	155	struct msg_conn_error {
b5c7a12d MC	156	uint32_t sid;
b5c7a12d MC	157	uint32_t cid;
39e84790 AA	158	uint32_t error; /* enum iscsi_err */
39e84790 AA	159	} connerror;
264faaaa OG	160	struct msg_transport_connect_ret {
	161	uint64_t handle;
	162	} ep_connect_ret;
01cb225d MC	163	struct msg_tgt_dscvr_ret {
	164	/*
	165	* session/connection pair used to reference
	166	* the connection to server
	167	*/
	168	uint32_t sid;
	169	uint32_t cid;
	170	union {
	171	struct isns {
	172	/* port # for conn to iSNS server */
	173	uint16_t isns_port;
	174	/* listening port to receive SCNs */
	175	uint16_t scn_port;
	176	/* listening port to receive ESIs */
	177	uint16_t esi_port;
	178	} isns_attrib;
	179	} u;
	180	} tgt_dscvr_ret;
39e84790 AA	181	} r;
	182	} __attribute__ ((aligned (sizeof(uint64_t))));
	183
	184	/*
	185	* Common error codes
	186	*/
	187	enum iscsi_err {
	188	ISCSI_OK = 0,
	189
	190	ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
	191	ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
	192	ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
	193	ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
	194	ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
	195	ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
	196	ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
	197	ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
	198	ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
	199	ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
	200	ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
	201	ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
	202	ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
	203	ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
	204	ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
7996a778 MC	205	ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16,
7996a778 MC	206	ISCSI_ERR_NO_SCSI_CMD = ISCSI_ERR_BASE + 17,
39e84790 AA	207	};
	208
	209	/*
	210	* iSCSI Parameters (RFC3720)
	211	*/
	212	enum iscsi_param {
fd7255f5 MC	213	/* passed in using netlink set param */
	214	ISCSI_PARAM_MAX_RECV_DLENGTH,
	215	ISCSI_PARAM_MAX_XMIT_DLENGTH,
	216	ISCSI_PARAM_HDRDGST_EN,
	217	ISCSI_PARAM_DATADGST_EN,
	218	ISCSI_PARAM_INITIAL_R2T_EN,
	219	ISCSI_PARAM_MAX_R2T,
	220	ISCSI_PARAM_IMM_DATA_EN,
	221	ISCSI_PARAM_FIRST_BURST,
	222	ISCSI_PARAM_MAX_BURST,
	223	ISCSI_PARAM_PDU_INORDER_EN,
	224	ISCSI_PARAM_DATASEQ_INORDER_EN,
	225	ISCSI_PARAM_ERL,
	226	ISCSI_PARAM_IFMARKER_EN,
	227	ISCSI_PARAM_OFMARKER_EN,
8d2860b3	228	ISCSI_PARAM_EXP_STATSN,
fd7255f5 MC	229	ISCSI_PARAM_TARGET_NAME,
	230	ISCSI_PARAM_TPGT,
	231	ISCSI_PARAM_PERSISTENT_ADDRESS,
	232	ISCSI_PARAM_PERSISTENT_PORT,
30a6c652	233	ISCSI_PARAM_SESS_RECOVERY_TMO,
fd7255f5 MC	234
	235	/* pased in through bind conn using transport_fd */
	236	ISCSI_PARAM_CONN_PORT,
	237	ISCSI_PARAM_CONN_ADDRESS,
	238
	239	/* must always be last */
	240	ISCSI_PARAM_MAX,
39e84790	241	};
fd7255f5 MC	242
	243	#define ISCSI_MAX_RECV_DLENGTH (1 << ISCSI_PARAM_MAX_RECV_DLENGTH)
	244	#define ISCSI_MAX_XMIT_DLENGTH (1 << ISCSI_PARAM_MAX_XMIT_DLENGTH)
	245	#define ISCSI_HDRDGST_EN (1 << ISCSI_PARAM_HDRDGST_EN)
	246	#define ISCSI_DATADGST_EN (1 << ISCSI_PARAM_DATADGST_EN)
	247	#define ISCSI_INITIAL_R2T_EN (1 << ISCSI_PARAM_INITIAL_R2T_EN)
	248	#define ISCSI_MAX_R2T (1 << ISCSI_PARAM_MAX_R2T)
	249	#define ISCSI_IMM_DATA_EN (1 << ISCSI_PARAM_IMM_DATA_EN)
	250	#define ISCSI_FIRST_BURST (1 << ISCSI_PARAM_FIRST_BURST)
	251	#define ISCSI_MAX_BURST (1 << ISCSI_PARAM_MAX_BURST)
	252	#define ISCSI_PDU_INORDER_EN (1 << ISCSI_PARAM_PDU_INORDER_EN)
	253	#define ISCSI_DATASEQ_INORDER_EN (1 << ISCSI_PARAM_DATASEQ_INORDER_EN)
	254	#define ISCSI_ERL (1 << ISCSI_PARAM_ERL)
	255	#define ISCSI_IFMARKER_EN (1 << ISCSI_PARAM_IFMARKER_EN)
	256	#define ISCSI_OFMARKER_EN (1 << ISCSI_PARAM_OFMARKER_EN)
8d2860b3	257	#define ISCSI_EXP_STATSN (1 << ISCSI_PARAM_EXP_STATSN)
fd7255f5 MC	258	#define ISCSI_TARGET_NAME (1 << ISCSI_PARAM_TARGET_NAME)
	259	#define ISCSI_TPGT (1 << ISCSI_PARAM_TPGT)
	260	#define ISCSI_PERSISTENT_ADDRESS (1 << ISCSI_PARAM_PERSISTENT_ADDRESS)
	261	#define ISCSI_PERSISTENT_PORT (1 << ISCSI_PARAM_PERSISTENT_PORT)
30a6c652	262	#define ISCSI_SESS_RECOVERY_TMO (1 << ISCSI_PARAM_SESS_RECOVERY_TMO)
fd7255f5 MC	263	#define ISCSI_CONN_PORT (1 << ISCSI_PARAM_CONN_PORT)
fd7255f5 MC	264	#define ISCSI_CONN_ADDRESS (1 << ISCSI_PARAM_CONN_ADDRESS)
39e84790	265
39e84790 AA	266	#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
39e84790 AA	267	#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
7b8631b5 MC	268	#define hostdata_session(_hostdata) (iscsi_ptr((unsigned long )_hostdata))
	269
	270	/**
	271	* iscsi_hostdata - get LLD hostdata from scsi_host
	272	* @_hostdata: pointer to scsi host's hostdata
	273	**/
39e84790 AA	274	#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))
	275
	276	/*
	277	* These flags presents iSCSI Data-Path capabilities.
	278	*/
	279	#define CAP_RECOVERY_L0 0x1
	280	#define CAP_RECOVERY_L1 0x2
	281	#define CAP_RECOVERY_L2 0x4
	282	#define CAP_MULTI_R2T 0x8
	283	#define CAP_HDRDGST 0x10
	284	#define CAP_DATADGST 0x20
	285	#define CAP_MULTI_CONN 0x40
	286	#define CAP_TEXT_NEGO 0x80
	287	#define CAP_MARKERS 0x100
	288
	289	/*
	290	* These flags describes reason of stop_conn() call
	291	*/
	292	#define STOP_CONN_TERM 0x1
	293	#define STOP_CONN_SUSPEND 0x2
	294	#define STOP_CONN_RECOVER 0x3
	295
	296	#define ISCSI_STATS_CUSTOM_MAX 32
	297	#define ISCSI_STATS_CUSTOM_DESC_MAX 64
	298	struct iscsi_stats_custom {
	299	char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
	300	uint64_t value;
	301	};
	302
	303	/*
	304	* struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
	305	*
	306	* Note: this structure contains counters collected on per-connection basis.
	307	*/
	308	struct iscsi_stats {
	309	/* octets */
	310	uint64_t txdata_octets;
	311	uint64_t rxdata_octets;
	312
	313	/* xmit pdus */
	314	uint32_t noptx_pdus;
	315	uint32_t scsicmd_pdus;
	316	uint32_t tmfcmd_pdus;
	317	uint32_t login_pdus;
	318	uint32_t text_pdus;
	319	uint32_t dataout_pdus;
	320	uint32_t logout_pdus;
	321	uint32_t snack_pdus;
	322
	323	/* recv pdus */
	324	uint32_t noprx_pdus;
	325	uint32_t scsirsp_pdus;
	326	uint32_t tmfrsp_pdus;
	327	uint32_t textrsp_pdus;
	328	uint32_t datain_pdus;
	329	uint32_t logoutrsp_pdus;
	330	uint32_t r2t_pdus;
	331	uint32_t async_pdus;
	332	uint32_t rjt_pdus;
	333
	334	/* errors */
	335	uint32_t digest_err;
	336	uint32_t timeout_err;
	337
338	/*
339	* iSCSI Custom Statistics support, i.e. Transport could
340	* extend existing MIB statistics with its own specific statistics
341	* up to ISCSI_STATS_CUSTOM_MAX
342	*/
343	uint32_t custom_length;
344	struct iscsi_stats_custom custom[0]
345	__attribute__ ((aligned (sizeof(uint64_t))));
346	};
347
348	#endif