summaryrefslogtreecommitdiffstats
path: root/include/target/target_core_fabric.h
blob: c78a23333c4fb801c72e86a55b05fd7e7bf66f67 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
#ifndef TARGET_CORE_FABRIC_H
#define TARGET_CORE_FABRIC_H

struct target_core_fabric_ops {
	struct configfs_subsystem *tf_subsys;
	char *(*get_fabric_name)(void);
	u8 (*get_fabric_proto_ident)(struct se_portal_group *);
	char *(*tpg_get_wwn)(struct se_portal_group *);
	u16 (*tpg_get_tag)(struct se_portal_group *);
	u32 (*tpg_get_default_depth)(struct se_portal_group *);
	u32 (*tpg_get_pr_transport_id)(struct se_portal_group *,
				struct se_node_acl *,
				struct t10_pr_registration *, int *,
				unsigned char *);
	u32 (*tpg_get_pr_transport_id_len)(struct se_portal_group *,
				struct se_node_acl *,
				struct t10_pr_registration *, int *);
	char *(*tpg_parse_pr_out_transport_id)(struct se_portal_group *,
				const char *, u32 *, char **);
	int (*tpg_check_demo_mode)(struct se_portal_group *);
	int (*tpg_check_demo_mode_cache)(struct se_portal_group *);
	int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *);
	int (*tpg_check_prod_mode_write_protect)(struct se_portal_group *);
	/*
	 * Optionally used by fabrics to allow demo-mode login, but not
	 * expose any TPG LUNs, and return 'not connected' in standard
	 * inquiry response
	 */
	int (*tpg_check_demo_mode_login_only)(struct se_portal_group *);
	struct se_node_acl *(*tpg_alloc_fabric_acl)(
					struct se_portal_group *);
	void (*tpg_release_fabric_acl)(struct se_portal_group *,
					struct se_node_acl *);
	u32 (*tpg_get_inst_index)(struct se_portal_group *);
	/*
	 * Optional function pointer for TCM to perform command map
	 * from TCM processing thread context, for those struct se_cmd
	 * initially allocated in interrupt context.
	 */
	int (*new_cmd_map)(struct se_cmd *);
	/*
	 * Optional to release struct se_cmd and fabric dependent allocated
	 * I/O descriptor in transport_cmd_check_stop().
	 *
	 * Returning 1 will signal a descriptor has been released.
	 * Returning 0 will signal a descriptor has not been released.
	 */
	int (*check_stop_free)(struct se_cmd *);
	void (*release_cmd)(struct se_cmd *);
	void (*put_session)(struct se_session *);
	/*
	 * Called with spin_lock_bh(struct se_portal_group->session_lock held.
	 */
	int (*shutdown_session)(struct se_session *);
	void (*close_session)(struct se_session *);
	u32 (*sess_get_index)(struct se_session *);
	/*
	 * Used only for SCSI fabrics that contain multi-value TransportIDs
	 * (like iSCSI).  All other SCSI fabrics should set this to NULL.
	 */
	u32 (*sess_get_initiator_sid)(struct se_session *,
				      unsigned char *, u32);
	int (*write_pending)(struct se_cmd *);
	int (*write_pending_status)(struct se_cmd *);
	void (*set_default_node_attributes)(struct se_node_acl *);
	u32 (*get_task_tag)(struct se_cmd *);
	int (*get_cmd_state)(struct se_cmd *);
	int (*queue_data_in)(struct se_cmd *);
	int (*queue_status)(struct se_cmd *);
	int (*queue_tm_rsp)(struct se_cmd *);
	u16 (*set_fabric_sense_len)(struct se_cmd *, u32);
	u16 (*get_fabric_sense_len)(void);
	/*
	 * fabric module calls for target_core_fabric_configfs.c
	 */
	struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *,
				struct config_group *, const char *);
	void (*fabric_drop_wwn)(struct se_wwn *);
	struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *,
				struct config_group *, const char *);
	void (*fabric_drop_tpg)(struct se_portal_group *);
	int (*fabric_post_link)(struct se_portal_group *,
				struct se_lun *);
	void (*fabric_pre_unlink)(struct se_portal_group *,
				struct se_lun *);
	struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *,
				struct config_group *, const char *);
	void (*fabric_drop_np)(struct se_tpg_np *);
	struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,
				struct config_group *, const char *);
	void (*fabric_drop_nodeacl)(struct se_node_acl *);
};

struct se_session *transport_init_session(void);
void	__transport_register_session(struct se_portal_group *,
		struct se_node_acl *, struct se_session *, void *);
void	transport_register_session(struct se_portal_group *,
		struct se_node_acl *, struct se_session *, void *);
void	target_get_session(struct se_session *);
void	target_put_session(struct se_session *);
void	transport_free_session(struct se_session *);
void	target_put_nacl(struct se_node_acl *);
void	transport_deregister_session_configfs(struct se_session *);
void	transport_deregister_session(struct se_session *);


void	transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *,
		struct se_session *, u32, int, int, unsigned char *);
int	transport_lookup_cmd_lun(struct se_cmd *, u32);
int	target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *);
void	target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *,
		unsigned char *, u32, u32, int, int, int);
int	target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
		unsigned char *sense, u32 unpacked_lun,
		void *fabric_tmr_ptr, unsigned char tm_type,
		gfp_t, unsigned int, int);
int	transport_handle_cdb_direct(struct se_cmd *);
int	transport_generic_handle_cdb_map(struct se_cmd *);
int	transport_generic_handle_data(struct se_cmd *);
int	transport_generic_map_mem_to_cmd(struct se_cmd *cmd,
		struct scatterlist *, u32, struct scatterlist *, u32);
int	transport_generic_new_cmd(struct se_cmd *);

void	transport_generic_process_write(struct se_cmd *);

void	transport_generic_free_cmd(struct se_cmd *, int);

bool	transport_wait_for_tasks(struct se_cmd *);
int	transport_check_aborted_status(struct se_cmd *, int);
int	transport_send_check_condition_and_sense(struct se_cmd *, u8, int);

void	target_get_sess_cmd(struct se_session *, struct se_cmd *, bool);
int	target_put_sess_cmd(struct se_session *, struct se_cmd *);
void	target_splice_sess_cmd_list(struct se_session *);
void	target_wait_for_sess_cmds(struct se_session *, int);

int	core_alua_check_nonop_delay(struct se_cmd *);

int	core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t);
void	core_tmr_release_req(struct se_tmr_req *);
int	transport_generic_handle_tmr(struct se_cmd *);
void	transport_generic_request_failure(struct se_cmd *);
int	transport_lookup_tmr_lun(struct se_cmd *, u32);

struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *,
		unsigned char *);
void	core_tpg_clear_object_luns(struct se_portal_group *);
struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *,
		struct se_node_acl *, const char *, u32);
int	core_tpg_del_initiator_node_acl(struct se_portal_group *,
		struct se_node_acl *, int);
int	core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
		unsigned char *, u32, int);
int	core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *,
		struct se_portal_group *, void *, int);
int	core_tpg_deregister(struct se_portal_group *);

/* SAS helpers */
u8	sas_get_fabric_proto_ident(struct se_portal_group *);
u32	sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
		struct t10_pr_registration *, int *, unsigned char *);
u32	sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
		struct t10_pr_registration *, int *);
char	*sas_parse_pr_out_transport_id(struct se_portal_group *, const char *,
		u32 *, char **);

/* FC helpers */
u8	fc_get_fabric_proto_ident(struct se_portal_group *);
u32	fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
		struct t10_pr_registration *, int *, unsigned char *);
u32	fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
		struct t10_pr_registration *, int *);
char	*fc_parse_pr_out_transport_id(struct se_portal_group *, const char *,
		u32 *, char **);

/* iSCSI helpers */
u8	iscsi_get_fabric_proto_ident(struct se_portal_group *);
u32	iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
		struct t10_pr_registration *, int *, unsigned char *);
u32	iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
		struct t10_pr_registration *, int *);
char	*iscsi_parse_pr_out_transport_id(struct se_portal_group *, const char *,
		u32 *, char **);

#endif /* TARGET_CORE_FABRICH */