ctl_frontend_iscsi.h revision 275495 
1/*-
2 * Copyright (c) 2012 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Edward Tomasz Napierala under sponsorship
6 * from the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.h 275495 2014-12-05 07:25:02Z mav $
30 */
31
32#ifndef CTL_FRONTEND_ISCSI_H
33#define	CTL_FRONTEND_ISCSI_H
34
35#define CFISCSI_TARGET_STATE_INVALID	0
36#define CFISCSI_TARGET_STATE_ACTIVE	1
37#define CFISCSI_TARGET_STATE_DYING	2
38
39struct cfiscsi_target {
40	TAILQ_ENTRY(cfiscsi_target)	ct_next;
41	uint32_t			ct_luns[CTL_MAX_LUNS];
42	struct cfiscsi_softc		*ct_softc;
43	volatile u_int			ct_refcount;
44	char				ct_name[CTL_ISCSI_NAME_LEN];
45	char				ct_alias[CTL_ISCSI_ALIAS_LEN];
46	int				ct_state;
47	int				ct_online;
48	int				ct_target_id;
49	struct ctl_port			ct_port;
50};
51
52struct cfiscsi_data_wait {
53	TAILQ_ENTRY(cfiscsi_data_wait)	cdw_next;
54	union ctl_io			*cdw_ctl_io;
55	uint32_t			cdw_target_transfer_tag;
56	uint32_t			cdw_initiator_task_tag;
57	int				cdw_sg_index;
58	char				*cdw_sg_addr;
59	size_t				cdw_sg_len;
60	uint32_t			cdw_r2t_end;
61};
62
63#define CFISCSI_SESSION_STATE_INVALID		0
64#define CFISCSI_SESSION_STATE_BHS		1
65#define CFISCSI_SESSION_STATE_AHS		2
66#define CFISCSI_SESSION_STATE_HEADER_DIGEST	3
67#define CFISCSI_SESSION_STATE_DATA		4
68#define CFISCSI_SESSION_STATE_DATA_DIGEST	5
69
70struct cfiscsi_session {
71	TAILQ_ENTRY(cfiscsi_session)	cs_next;
72	struct mtx			cs_lock;
73	struct icl_conn			*cs_conn;
74	uint32_t			cs_cmdsn;
75	uint32_t			cs_statsn;
76	uint32_t			cs_target_transfer_tag;
77	volatile u_int			cs_outstanding_ctl_pdus;
78	TAILQ_HEAD(, cfiscsi_data_wait)	cs_waiting_for_data_out;
79	struct cfiscsi_target		*cs_target;
80	struct callout			cs_callout;
81	int				cs_timeout;
82	int				cs_portal_group_tag;
83	struct cv			cs_maintenance_cv;
84	bool				cs_terminating;
85	bool				cs_tasks_aborted;
86	size_t				cs_max_data_segment_length;
87	size_t				cs_max_burst_length;
88	bool				cs_immediate_data;
89	char				cs_initiator_name[CTL_ISCSI_NAME_LEN];
90	char				cs_initiator_addr[CTL_ISCSI_ADDR_LEN];
91	char				cs_initiator_alias[CTL_ISCSI_ALIAS_LEN];
92	char				cs_initiator_isid[6];
93	char				cs_initiator_id[CTL_ISCSI_NAME_LEN + 5 + 6 + 1];
94	unsigned int			cs_id;
95	int				cs_ctl_initid;
96#ifdef ICL_KERNEL_PROXY
97	struct sockaddr			*cs_initiator_sa;
98	int				cs_portal_id;
99	bool				cs_login_phase;
100	bool				cs_waiting_for_ctld;
101	struct cv			cs_login_cv;
102	struct icl_pdu			*cs_login_pdu;
103#endif
104};
105
106#ifdef ICL_KERNEL_PROXY
107struct icl_listen;
108#endif
109
110struct cfiscsi_softc {
111	struct mtx			lock;
112	char				port_name[32];
113	int				online;
114	int				last_target_id;
115	unsigned int			last_session_id;
116	TAILQ_HEAD(, cfiscsi_target)	targets;
117	TAILQ_HEAD(, cfiscsi_session)	sessions;
118	struct cv			sessions_cv;
119#ifdef ICL_KERNEL_PROXY
120	struct icl_listen		*listener;
121	struct cv			accept_cv;
122#endif
123};
124
125#endif /* !CTL_FRONTEND_ISCSI_H */
126