1 /* Defined in target_core_configfs.h */
2 struct target_fabric_configfs;
3 
4 struct target_core_fabric_ops {
5 	struct configfs_subsystem *tf_subsys;
6 	/*
7 	 * Optional to signal struct se_task->task_sg[] padding entries
8 	 * for scatterlist chaining using transport_do_task_sg_link(),
9 	 * disabled by default
10 	 */
11 	bool task_sg_chaining;
12 	char *(*get_fabric_name)(void);
13 	u8 (*get_fabric_proto_ident)(struct se_portal_group *);
14 	char *(*tpg_get_wwn)(struct se_portal_group *);
15 	u16 (*tpg_get_tag)(struct se_portal_group *);
16 	u32 (*tpg_get_default_depth)(struct se_portal_group *);
17 	u32 (*tpg_get_pr_transport_id)(struct se_portal_group *,
18 				struct se_node_acl *,
19 				struct t10_pr_registration *, int *,
20 				unsigned char *);
21 	u32 (*tpg_get_pr_transport_id_len)(struct se_portal_group *,
22 				struct se_node_acl *,
23 				struct t10_pr_registration *, int *);
24 	char *(*tpg_parse_pr_out_transport_id)(struct se_portal_group *,
25 				const char *, u32 *, char **);
26 	int (*tpg_check_demo_mode)(struct se_portal_group *);
27 	int (*tpg_check_demo_mode_cache)(struct se_portal_group *);
28 	int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *);
29 	int (*tpg_check_prod_mode_write_protect)(struct se_portal_group *);
30 	struct se_node_acl *(*tpg_alloc_fabric_acl)(
31 					struct se_portal_group *);
32 	void (*tpg_release_fabric_acl)(struct se_portal_group *,
33 					struct se_node_acl *);
34 	u32 (*tpg_get_inst_index)(struct se_portal_group *);
35 	/*
36 	 * Optional function pointer for TCM to perform command map
37 	 * from TCM processing thread context, for those struct se_cmd
38 	 * initially allocated in interrupt context.
39 	 */
40 	int (*new_cmd_map)(struct se_cmd *);
41 	/*
42 	 * Optional function pointer for TCM fabric modules that use
43 	 * Linux/NET sockets to allocate struct iovec array to struct se_cmd
44 	 */
45 	int (*alloc_cmd_iovecs)(struct se_cmd *);
46 	/*
47 	 * Optional to release struct se_cmd and fabric dependent allocated
48 	 * I/O descriptor in transport_cmd_check_stop()
49 	 */
50 	void (*check_stop_free)(struct se_cmd *);
51 	void (*release_cmd_to_pool)(struct se_cmd *);
52 	void (*release_cmd_direct)(struct se_cmd *);
53 	/*
54 	 * Called with spin_lock_bh(struct se_portal_group->session_lock held.
55 	 */
56 	int (*shutdown_session)(struct se_session *);
57 	void (*close_session)(struct se_session *);
58 	void (*stop_session)(struct se_session *, int, int);
59 	void (*fall_back_to_erl0)(struct se_session *);
60 	int (*sess_logged_in)(struct se_session *);
61 	u32 (*sess_get_index)(struct se_session *);
62 	/*
63 	 * Used only for SCSI fabrics that contain multi-value TransportIDs
64 	 * (like iSCSI).  All other SCSI fabrics should set this to NULL.
65 	 */
66 	u32 (*sess_get_initiator_sid)(struct se_session *,
67 				      unsigned char *, u32);
68 	int (*write_pending)(struct se_cmd *);
69 	int (*write_pending_status)(struct se_cmd *);
70 	void (*set_default_node_attributes)(struct se_node_acl *);
71 	u32 (*get_task_tag)(struct se_cmd *);
72 	int (*get_cmd_state)(struct se_cmd *);
73 	void (*new_cmd_failure)(struct se_cmd *);
74 	int (*queue_data_in)(struct se_cmd *);
75 	int (*queue_status)(struct se_cmd *);
76 	int (*queue_tm_rsp)(struct se_cmd *);
77 	u16 (*set_fabric_sense_len)(struct se_cmd *, u32);
78 	u16 (*get_fabric_sense_len)(void);
79 	int (*is_state_remove)(struct se_cmd *);
80 	u64 (*pack_lun)(unsigned int);
81 	/*
82 	 * fabric module calls for target_core_fabric_configfs.c
83 	 */
84 	struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *,
85 				struct config_group *, const char *);
86 	void (*fabric_drop_wwn)(struct se_wwn *);
87 	struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *,
88 				struct config_group *, const char *);
89 	void (*fabric_drop_tpg)(struct se_portal_group *);
90 	int (*fabric_post_link)(struct se_portal_group *,
91 				struct se_lun *);
92 	void (*fabric_pre_unlink)(struct se_portal_group *,
93 				struct se_lun *);
94 	struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *,
95 				struct config_group *, const char *);
96 	void (*fabric_drop_np)(struct se_tpg_np *);
97 	struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,
98 				struct config_group *, const char *);
99 	void (*fabric_drop_nodeacl)(struct se_node_acl *);
100 };
101