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 *);
55 void (*release_cmd)(struct se_cmd *);
57 * Called with spin_lock_bh(struct se_portal_group->session_lock held.
59 int (*shutdown_session)(struct se_session *);
60 void (*close_session)(struct se_session *);
61 void (*stop_session)(struct se_session *, int, int);
62 void (*fall_back_to_erl0)(struct se_session *);
63 int (*sess_logged_in)(struct se_session *);
64 u32 (*sess_get_index)(struct se_session *);
66 * Used only for SCSI fabrics that contain multi-value TransportIDs
67 * (like iSCSI). All other SCSI fabrics should set this to NULL.
69 u32 (*sess_get_initiator_sid)(struct se_session *,
70 unsigned char *, u32);
71 int (*write_pending)(struct se_cmd *);
72 int (*write_pending_status)(struct se_cmd *);
73 void (*set_default_node_attributes)(struct se_node_acl *);
74 u32 (*get_task_tag)(struct se_cmd *);
75 int (*get_cmd_state)(struct se_cmd *);
76 int (*queue_data_in)(struct se_cmd *);
77 int (*queue_status)(struct se_cmd *);
78 int (*queue_tm_rsp)(struct se_cmd *);
79 u16 (*set_fabric_sense_len)(struct se_cmd *, u32);
80 u16 (*get_fabric_sense_len)(void);
81 int (*is_state_remove)(struct se_cmd *);
83 * fabric module calls for target_core_fabric_configfs.c
85 struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *,
86 struct config_group *, const char *);
87 void (*fabric_drop_wwn)(struct se_wwn *);
88 struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *,
89 struct config_group *, const char *);
90 void (*fabric_drop_tpg)(struct se_portal_group *);
91 int (*fabric_post_link)(struct se_portal_group *,
93 void (*fabric_pre_unlink)(struct se_portal_group *,
95 struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *,
96 struct config_group *, const char *);
97 void (*fabric_drop_np)(struct se_tpg_np *);
98 struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,
99 struct config_group *, const char *);
100 void (*fabric_drop_nodeacl)(struct se_node_acl *);
103 struct se_session *transport_init_session(void);
104 void __transport_register_session(struct se_portal_group *,
105 struct se_node_acl *, struct se_session *, void *);
106 void transport_register_session(struct se_portal_group *,
107 struct se_node_acl *, struct se_session *, void *);
108 void transport_free_session(struct se_session *);
109 void transport_deregister_session_configfs(struct se_session *);
110 void transport_deregister_session(struct se_session *);
113 void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *,
114 struct se_session *, u32, int, int, unsigned char *);
115 int transport_lookup_cmd_lun(struct se_cmd *, u32);
116 int transport_generic_allocate_tasks(struct se_cmd *, unsigned char *);
117 void target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *,
118 unsigned char *, u32, u32, int, int, int);
119 int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
120 unsigned char *sense, u32 unpacked_lun,
121 void *fabric_tmr_ptr, unsigned char tm_type,
122 gfp_t, unsigned int, int);
123 int transport_handle_cdb_direct(struct se_cmd *);
124 int transport_generic_handle_cdb_map(struct se_cmd *);
125 int transport_generic_handle_data(struct se_cmd *);
126 int transport_generic_map_mem_to_cmd(struct se_cmd *cmd,
127 struct scatterlist *, u32, struct scatterlist *, u32);
128 void transport_do_task_sg_chain(struct se_cmd *);
129 int transport_generic_new_cmd(struct se_cmd *);
131 void transport_generic_process_write(struct se_cmd *);
133 void transport_generic_free_cmd(struct se_cmd *, int);
135 bool transport_wait_for_tasks(struct se_cmd *);
136 int transport_check_aborted_status(struct se_cmd *, int);
137 int transport_send_check_condition_and_sense(struct se_cmd *, u8, int);
139 void target_get_sess_cmd(struct se_session *, struct se_cmd *, bool);
140 int target_put_sess_cmd(struct se_session *, struct se_cmd *);
141 void target_splice_sess_cmd_list(struct se_session *);
142 void target_wait_for_sess_cmds(struct se_session *, int);
144 int core_alua_check_nonop_delay(struct se_cmd *);
146 int core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t);
147 void core_tmr_release_req(struct se_tmr_req *);
148 int transport_generic_handle_tmr(struct se_cmd *);
149 void transport_generic_request_failure(struct se_cmd *);
150 int transport_lookup_tmr_lun(struct se_cmd *, u32);
152 struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *,
154 void core_tpg_clear_object_luns(struct se_portal_group *);
155 struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *,
156 struct se_node_acl *, const char *, u32);
157 int core_tpg_del_initiator_node_acl(struct se_portal_group *,
158 struct se_node_acl *, int);
159 int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
160 unsigned char *, u32, int);
161 int core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *,
162 struct se_portal_group *, void *, int);
163 int core_tpg_deregister(struct se_portal_group *);
166 u8 sas_get_fabric_proto_ident(struct se_portal_group *);
167 u32 sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
168 struct t10_pr_registration *, int *, unsigned char *);
169 u32 sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
170 struct t10_pr_registration *, int *);
171 char *sas_parse_pr_out_transport_id(struct se_portal_group *, const char *,
175 u8 fc_get_fabric_proto_ident(struct se_portal_group *);
176 u32 fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
177 struct t10_pr_registration *, int *, unsigned char *);
178 u32 fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
179 struct t10_pr_registration *, int *);
180 char *fc_parse_pr_out_transport_id(struct se_portal_group *, const char *,
184 u8 iscsi_get_fabric_proto_ident(struct se_portal_group *);
185 u32 iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
186 struct t10_pr_registration *, int *, unsigned char *);
187 u32 iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
188 struct t10_pr_registration *, int *);
189 char *iscsi_parse_pr_out_transport_id(struct se_portal_group *, const char *,
192 #endif /* TARGET_CORE_FABRICH */