include/target/target_core_fabric_ops.h

   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         int task_sg_chaining:1;
  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          * initally 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 };