1 #ifndef TARGET_CORE_FABRIC_H
2 #define TARGET_CORE_FABRIC_H
4 struct target_core_fabric_ops
{
5 struct configfs_subsystem
*tf_subsys
;
7 * Optional to signal struct se_task->task_sg[] padding entries
8 * for scatterlist chaining using transport_do_task_sg_link(),
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
*,
19 struct t10_pr_registration
*, int *,
21 u32 (*tpg_get_pr_transport_id_len
)(struct se_portal_group
*,
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
*);
31 * Optionally used by fabrics to allow demo-mode login, but not
32 * expose any TPG LUNs, and return 'not connected' in standard
35 int (*tpg_check_demo_mode_login_only
)(struct se_portal_group
*);
36 struct se_node_acl
*(*tpg_alloc_fabric_acl
)(
37 struct se_portal_group
*);
38 void (*tpg_release_fabric_acl
)(struct se_portal_group
*,
39 struct se_node_acl
*);
40 u32 (*tpg_get_inst_index
)(struct se_portal_group
*);
42 * Optional function pointer for TCM to perform command map
43 * from TCM processing thread context, for those struct se_cmd
44 * initially allocated in interrupt context.
46 int (*new_cmd_map
)(struct se_cmd
*);
48 * Optional to release struct se_cmd and fabric dependent allocated
49 * I/O descriptor in transport_cmd_check_stop().
51 * Returning 1 will signal a descriptor has been released.
52 * Returning 0 will signal a descriptor has not been released.
54 int (*check_stop_free
)(struct se_cmd
*);
56 * Optional check for active I/O shutdown
58 int (*check_release_cmd
)(struct se_cmd
*);
59 void (*release_cmd
)(struct se_cmd
*);
61 * Called with spin_lock_bh(struct se_portal_group->session_lock held.
63 int (*shutdown_session
)(struct se_session
*);
64 void (*close_session
)(struct se_session
*);
65 void (*stop_session
)(struct se_session
*, int, int);
66 void (*fall_back_to_erl0
)(struct se_session
*);
67 int (*sess_logged_in
)(struct se_session
*);
68 u32 (*sess_get_index
)(struct se_session
*);
70 * Used only for SCSI fabrics that contain multi-value TransportIDs
71 * (like iSCSI). All other SCSI fabrics should set this to NULL.
73 u32 (*sess_get_initiator_sid
)(struct se_session
*,
74 unsigned char *, u32
);
75 int (*write_pending
)(struct se_cmd
*);
76 int (*write_pending_status
)(struct se_cmd
*);
77 void (*set_default_node_attributes
)(struct se_node_acl
*);
78 u32 (*get_task_tag
)(struct se_cmd
*);
79 int (*get_cmd_state
)(struct se_cmd
*);
80 int (*queue_data_in
)(struct se_cmd
*);
81 int (*queue_status
)(struct se_cmd
*);
82 int (*queue_tm_rsp
)(struct se_cmd
*);
83 u16 (*set_fabric_sense_len
)(struct se_cmd
*, u32
);
84 u16 (*get_fabric_sense_len
)(void);
85 int (*is_state_remove
)(struct se_cmd
*);
87 * fabric module calls for target_core_fabric_configfs.c
89 struct se_wwn
*(*fabric_make_wwn
)(struct target_fabric_configfs
*,
90 struct config_group
*, const char *);
91 void (*fabric_drop_wwn
)(struct se_wwn
*);
92 struct se_portal_group
*(*fabric_make_tpg
)(struct se_wwn
*,
93 struct config_group
*, const char *);
94 void (*fabric_drop_tpg
)(struct se_portal_group
*);
95 int (*fabric_post_link
)(struct se_portal_group
*,
97 void (*fabric_pre_unlink
)(struct se_portal_group
*,
99 struct se_tpg_np
*(*fabric_make_np
)(struct se_portal_group
*,
100 struct config_group
*, const char *);
101 void (*fabric_drop_np
)(struct se_tpg_np
*);
102 struct se_node_acl
*(*fabric_make_nodeacl
)(struct se_portal_group
*,
103 struct config_group
*, const char *);
104 void (*fabric_drop_nodeacl
)(struct se_node_acl
*);
107 struct se_session
*transport_init_session(void);
108 void __transport_register_session(struct se_portal_group
*,
109 struct se_node_acl
*, struct se_session
*, void *);
110 void transport_register_session(struct se_portal_group
*,
111 struct se_node_acl
*, struct se_session
*, void *);
112 void transport_free_session(struct se_session
*);
113 void transport_deregister_session_configfs(struct se_session
*);
114 void transport_deregister_session(struct se_session
*);
117 void transport_init_se_cmd(struct se_cmd
*, struct target_core_fabric_ops
*,
118 struct se_session
*, u32
, int, int, unsigned char *);
119 int transport_lookup_cmd_lun(struct se_cmd
*, u32
);
120 int transport_generic_allocate_tasks(struct se_cmd
*, unsigned char *);
121 int transport_handle_cdb_direct(struct se_cmd
*);
122 int transport_generic_handle_cdb_map(struct se_cmd
*);
123 int transport_generic_handle_data(struct se_cmd
*);
124 int transport_generic_map_mem_to_cmd(struct se_cmd
*cmd
,
125 struct scatterlist
*, u32
, struct scatterlist
*, u32
);
126 void transport_do_task_sg_chain(struct se_cmd
*);
127 int transport_generic_new_cmd(struct se_cmd
*);
129 void transport_generic_process_write(struct se_cmd
*);
131 void transport_generic_free_cmd(struct se_cmd
*, int);
133 bool transport_wait_for_tasks(struct se_cmd
*);
134 int transport_check_aborted_status(struct se_cmd
*, int);
135 int transport_send_check_condition_and_sense(struct se_cmd
*, u8
, int);
137 void target_get_sess_cmd(struct se_session
*, struct se_cmd
*);
138 int target_put_sess_cmd(struct se_session
*, struct se_cmd
*);
139 void target_splice_sess_cmd_list(struct se_session
*);
140 void target_wait_for_sess_cmds(struct se_session
*, int);
142 int core_alua_check_nonop_delay(struct se_cmd
*);
144 struct se_tmr_req
*core_tmr_alloc_req(struct se_cmd
*, void *, u8
, gfp_t
);
145 void core_tmr_release_req(struct se_tmr_req
*);
146 int transport_generic_handle_tmr(struct se_cmd
*);
147 int transport_lookup_tmr_lun(struct se_cmd
*, u32
);
149 struct se_node_acl
*core_tpg_check_initiator_node_acl(struct se_portal_group
*,
151 void core_tpg_clear_object_luns(struct se_portal_group
*);
152 struct se_node_acl
*core_tpg_add_initiator_node_acl(struct se_portal_group
*,
153 struct se_node_acl
*, const char *, u32
);
154 int core_tpg_del_initiator_node_acl(struct se_portal_group
*,
155 struct se_node_acl
*, int);
156 int core_tpg_set_initiator_node_queue_depth(struct se_portal_group
*,
157 unsigned char *, u32
, int);
158 int core_tpg_register(struct target_core_fabric_ops
*, struct se_wwn
*,
159 struct se_portal_group
*, void *, int);
160 int core_tpg_deregister(struct se_portal_group
*);
163 u8
sas_get_fabric_proto_ident(struct se_portal_group
*);
164 u32
sas_get_pr_transport_id(struct se_portal_group
*, struct se_node_acl
*,
165 struct t10_pr_registration
*, int *, unsigned char *);
166 u32
sas_get_pr_transport_id_len(struct se_portal_group
*, struct se_node_acl
*,
167 struct t10_pr_registration
*, int *);
168 char *sas_parse_pr_out_transport_id(struct se_portal_group
*, const char *,
172 u8
fc_get_fabric_proto_ident(struct se_portal_group
*);
173 u32
fc_get_pr_transport_id(struct se_portal_group
*, struct se_node_acl
*,
174 struct t10_pr_registration
*, int *, unsigned char *);
175 u32
fc_get_pr_transport_id_len(struct se_portal_group
*, struct se_node_acl
*,
176 struct t10_pr_registration
*, int *);
177 char *fc_parse_pr_out_transport_id(struct se_portal_group
*, const char *,
181 u8
iscsi_get_fabric_proto_ident(struct se_portal_group
*);
182 u32
iscsi_get_pr_transport_id(struct se_portal_group
*, struct se_node_acl
*,
183 struct t10_pr_registration
*, int *, unsigned char *);
184 u32
iscsi_get_pr_transport_id_len(struct se_portal_group
*, struct se_node_acl
*,
185 struct t10_pr_registration
*, int *);
186 char *iscsi_parse_pr_out_transport_id(struct se_portal_group
*, const char *,
189 #endif /* TARGET_CORE_FABRICH */