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Commit | Line | Data |
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c4795fb2 CH |
1 | #ifndef TARGET_CORE_FABRIC_H |
2 | #define TARGET_CORE_FABRIC_H | |
c66ac9db NB |
3 | |
4 | struct target_core_fabric_ops { | |
9ac8928e CH |
5 | struct module *module; |
6 | const char *name; | |
144bc4c2 | 7 | size_t node_acl_size; |
c66ac9db | 8 | char *(*get_fabric_name)(void); |
c66ac9db NB |
9 | char *(*tpg_get_wwn)(struct se_portal_group *); |
10 | u16 (*tpg_get_tag)(struct se_portal_group *); | |
11 | u32 (*tpg_get_default_depth)(struct se_portal_group *); | |
c66ac9db NB |
12 | int (*tpg_check_demo_mode)(struct se_portal_group *); |
13 | int (*tpg_check_demo_mode_cache)(struct se_portal_group *); | |
14 | int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *); | |
15 | int (*tpg_check_prod_mode_write_protect)(struct se_portal_group *); | |
052605c6 NB |
16 | /* |
17 | * Optionally used by fabrics to allow demo-mode login, but not | |
18 | * expose any TPG LUNs, and return 'not connected' in standard | |
19 | * inquiry response | |
20 | */ | |
21 | int (*tpg_check_demo_mode_login_only)(struct se_portal_group *); | |
38b57f82 NB |
22 | /* |
23 | * Optionally used as a configfs tunable to determine when | |
24 | * target-core should signal the PROTECT=1 feature bit for | |
25 | * backends that don't support T10-PI, so that either fabric | |
26 | * HW offload or target-core emulation performs the associated | |
27 | * WRITE_STRIP and READ_INSERT operations. | |
28 | */ | |
29 | int (*tpg_check_prot_fabric_only)(struct se_portal_group *); | |
c66ac9db | 30 | u32 (*tpg_get_inst_index)(struct se_portal_group *); |
c66ac9db NB |
31 | /* |
32 | * Optional to release struct se_cmd and fabric dependent allocated | |
88dd9e26 NB |
33 | * I/O descriptor in transport_cmd_check_stop(). |
34 | * | |
35 | * Returning 1 will signal a descriptor has been released. | |
36 | * Returning 0 will signal a descriptor has not been released. | |
c66ac9db | 37 | */ |
88dd9e26 | 38 | int (*check_stop_free)(struct se_cmd *); |
35462975 | 39 | void (*release_cmd)(struct se_cmd *); |
c66ac9db NB |
40 | /* |
41 | * Called with spin_lock_bh(struct se_portal_group->session_lock held. | |
42 | */ | |
43 | int (*shutdown_session)(struct se_session *); | |
44 | void (*close_session)(struct se_session *); | |
c66ac9db NB |
45 | u32 (*sess_get_index)(struct se_session *); |
46 | /* | |
47 | * Used only for SCSI fabrics that contain multi-value TransportIDs | |
48 | * (like iSCSI). All other SCSI fabrics should set this to NULL. | |
49 | */ | |
50 | u32 (*sess_get_initiator_sid)(struct se_session *, | |
51 | unsigned char *, u32); | |
52 | int (*write_pending)(struct se_cmd *); | |
53 | int (*write_pending_status)(struct se_cmd *); | |
54 | void (*set_default_node_attributes)(struct se_node_acl *); | |
c66ac9db | 55 | int (*get_cmd_state)(struct se_cmd *); |
c66ac9db NB |
56 | int (*queue_data_in)(struct se_cmd *); |
57 | int (*queue_status)(struct se_cmd *); | |
b79fafac | 58 | void (*queue_tm_rsp)(struct se_cmd *); |
131e6abc | 59 | void (*aborted_task)(struct se_cmd *); |
c66ac9db NB |
60 | /* |
61 | * fabric module calls for target_core_fabric_configfs.c | |
62 | */ | |
63 | struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *, | |
64 | struct config_group *, const char *); | |
65 | void (*fabric_drop_wwn)(struct se_wwn *); | |
66 | struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *, | |
67 | struct config_group *, const char *); | |
68 | void (*fabric_drop_tpg)(struct se_portal_group *); | |
69 | int (*fabric_post_link)(struct se_portal_group *, | |
70 | struct se_lun *); | |
71 | void (*fabric_pre_unlink)(struct se_portal_group *, | |
72 | struct se_lun *); | |
73 | struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *, | |
74 | struct config_group *, const char *); | |
75 | void (*fabric_drop_np)(struct se_tpg_np *); | |
c7d6a803 CH |
76 | int (*fabric_init_nodeacl)(struct se_node_acl *, const char *); |
77 | void (*fabric_cleanup_nodeacl)(struct se_node_acl *); | |
9ac8928e CH |
78 | |
79 | struct configfs_attribute **tfc_discovery_attrs; | |
80 | struct configfs_attribute **tfc_wwn_attrs; | |
81 | struct configfs_attribute **tfc_tpg_base_attrs; | |
82 | struct configfs_attribute **tfc_tpg_np_base_attrs; | |
83 | struct configfs_attribute **tfc_tpg_attrib_attrs; | |
84 | struct configfs_attribute **tfc_tpg_auth_attrs; | |
85 | struct configfs_attribute **tfc_tpg_param_attrs; | |
86 | struct configfs_attribute **tfc_tpg_nacl_base_attrs; | |
87 | struct configfs_attribute **tfc_tpg_nacl_attrib_attrs; | |
88 | struct configfs_attribute **tfc_tpg_nacl_auth_attrs; | |
89 | struct configfs_attribute **tfc_tpg_nacl_param_attrs; | |
c66ac9db | 90 | }; |
c4795fb2 | 91 | |
9ac8928e CH |
92 | int target_register_template(const struct target_core_fabric_ops *fo); |
93 | void target_unregister_template(const struct target_core_fabric_ops *fo); | |
94 | ||
d588cf8f CH |
95 | int target_depend_item(struct config_item *item); |
96 | void target_undepend_item(struct config_item *item); | |
97 | ||
e70beee7 | 98 | struct se_session *transport_init_session(enum target_prot_op); |
c0add7fd NB |
99 | int transport_alloc_session_tags(struct se_session *, unsigned int, |
100 | unsigned int); | |
e70beee7 NB |
101 | struct se_session *transport_init_session_tags(unsigned int, unsigned int, |
102 | enum target_prot_op); | |
c4795fb2 CH |
103 | void __transport_register_session(struct se_portal_group *, |
104 | struct se_node_acl *, struct se_session *, void *); | |
105 | void transport_register_session(struct se_portal_group *, | |
106 | struct se_node_acl *, struct se_session *, void *); | |
41ac82b6 | 107 | void target_get_session(struct se_session *); |
33933a0e | 108 | void target_put_session(struct se_session *); |
f8e471f9 | 109 | ssize_t target_show_dynamic_sessions(struct se_portal_group *, char *); |
c4795fb2 | 110 | void transport_free_session(struct se_session *); |
afb999ff | 111 | void target_put_nacl(struct se_node_acl *); |
c4795fb2 CH |
112 | void transport_deregister_session_configfs(struct se_session *); |
113 | void transport_deregister_session(struct se_session *); | |
114 | ||
115 | ||
9ac8928e CH |
116 | void transport_init_se_cmd(struct se_cmd *, |
117 | const struct target_core_fabric_ops *, | |
c4795fb2 | 118 | struct se_session *, u32, int, int, unsigned char *); |
f2d30680 | 119 | sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u64); |
de103c93 | 120 | sense_reason_t target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *); |
a026757f | 121 | int target_submit_cmd_map_sgls(struct se_cmd *, struct se_session *, |
f2d30680 | 122 | unsigned char *, unsigned char *, u64, u32, int, int, int, |
def2b339 NB |
123 | struct scatterlist *, u32, struct scatterlist *, u32, |
124 | struct scatterlist *, u32); | |
d6dfc868 | 125 | int target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *, |
f2d30680 | 126 | unsigned char *, u64, u32, int, int, int); |
c7042cae | 127 | int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess, |
f2d30680 | 128 | unsigned char *sense, u64 unpacked_lun, |
c0974f89 NB |
129 | void *fabric_tmr_ptr, unsigned char tm_type, |
130 | gfp_t, unsigned int, int); | |
c4795fb2 | 131 | int transport_handle_cdb_direct(struct se_cmd *); |
de103c93 | 132 | sense_reason_t transport_generic_new_cmd(struct se_cmd *); |
c4795fb2 | 133 | |
70baf0ab | 134 | void target_execute_cmd(struct se_cmd *cmd); |
c4795fb2 | 135 | |
d5ddad41 | 136 | int transport_generic_free_cmd(struct se_cmd *, int); |
c4795fb2 CH |
137 | |
138 | bool transport_wait_for_tasks(struct se_cmd *); | |
139 | int transport_check_aborted_status(struct se_cmd *, int); | |
de103c93 CH |
140 | int transport_send_check_condition_and_sense(struct se_cmd *, |
141 | sense_reason_t, int); | |
afc16604 BVA |
142 | int target_get_sess_cmd(struct se_cmd *, bool); |
143 | int target_put_sess_cmd(struct se_cmd *); | |
1c7b13fe | 144 | void target_sess_cmd_list_set_waiting(struct se_session *); |
be646c2d | 145 | void target_wait_for_sess_cmds(struct se_session *); |
c4795fb2 CH |
146 | |
147 | int core_alua_check_nonop_delay(struct se_cmd *); | |
148 | ||
c8e31f26 | 149 | int core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t); |
c4795fb2 CH |
150 | void core_tmr_release_req(struct se_tmr_req *); |
151 | int transport_generic_handle_tmr(struct se_cmd *); | |
de103c93 | 152 | void transport_generic_request_failure(struct se_cmd *, sense_reason_t); |
76dde50e | 153 | void __target_execute_cmd(struct se_cmd *); |
f2d30680 | 154 | int transport_lookup_tmr_lun(struct se_cmd *, u64); |
c4795fb2 | 155 | |
b3fde035 TG |
156 | struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg, |
157 | unsigned char *); | |
c4795fb2 CH |
158 | struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *, |
159 | unsigned char *); | |
c4795fb2 CH |
160 | int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *, |
161 | unsigned char *, u32, int); | |
79e62fc3 AG |
162 | int core_tpg_set_initiator_node_tag(struct se_portal_group *, |
163 | struct se_node_acl *, const char *); | |
bc0c94b1 | 164 | int core_tpg_register(struct se_wwn *, struct se_portal_group *, int); |
c4795fb2 CH |
165 | int core_tpg_deregister(struct se_portal_group *); |
166 | ||
b3faa2e8 NB |
167 | /* |
168 | * The LIO target core uses DMA_TO_DEVICE to mean that data is going | |
169 | * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean | |
170 | * that data is coming from the target (eg handling a READ). However, | |
171 | * this is just the opposite of what we have to tell the DMA mapping | |
172 | * layer -- eg when handling a READ, the HBA will have to DMA the data | |
173 | * out of memory so it can send it to the initiator, which means we | |
174 | * need to use DMA_TO_DEVICE when we map the data. | |
175 | */ | |
176 | static inline enum dma_data_direction | |
177 | target_reverse_dma_direction(struct se_cmd *se_cmd) | |
178 | { | |
179 | if (se_cmd->se_cmd_flags & SCF_BIDI) | |
180 | return DMA_BIDIRECTIONAL; | |
181 | ||
182 | switch (se_cmd->data_direction) { | |
183 | case DMA_TO_DEVICE: | |
184 | return DMA_FROM_DEVICE; | |
185 | case DMA_FROM_DEVICE: | |
186 | return DMA_TO_DEVICE; | |
187 | case DMA_NONE: | |
188 | default: | |
189 | return DMA_NONE; | |
190 | } | |
191 | } | |
192 | ||
c4795fb2 | 193 | #endif /* TARGET_CORE_FABRICH */ |