LXR linux/include/target/target_core_fabric

   1/* Defined in target_core_configfs.h */
   2struct target_fabric_configfs;
   3
   4struct 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