drivers/target/target_core_internal.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef TARGET_CORE_INTERNAL_H
0003 #define TARGET_CORE_INTERNAL_H
0004
0005 #include <linux/configfs.h>
0006 #include <linux/list.h>
0007 #include <linux/types.h>
0008 #include <target/target_core_base.h>
0009
0010 #define TARGET_CORE_NAME_MAX_LEN    64
0011 #define TARGET_FABRIC_NAME_SIZE     32
0012
0013 struct target_backend {
0014     struct list_head list;
0015
0016     const struct target_backend_ops *ops;
0017
0018     struct config_item_type tb_dev_cit;
0019     struct config_item_type tb_dev_attrib_cit;
0020     struct config_item_type tb_dev_action_cit;
0021     struct config_item_type tb_dev_pr_cit;
0022     struct config_item_type tb_dev_wwn_cit;
0023     struct config_item_type tb_dev_alua_tg_pt_gps_cit;
0024     struct config_item_type tb_dev_stat_cit;
0025 };
0026
0027 struct target_fabric_configfs {
0028     atomic_t        tf_access_cnt;
0029     struct list_head    tf_list;
0030     struct config_group tf_group;
0031     struct config_group tf_disc_group;
0032     const struct target_core_fabric_ops *tf_ops;
0033
0034     struct config_item_type tf_discovery_cit;
0035     struct config_item_type tf_wwn_cit;
0036     struct config_item_type tf_wwn_fabric_stats_cit;
0037     struct config_item_type tf_wwn_param_cit;
0038     struct config_item_type tf_tpg_cit;
0039     struct config_item_type tf_tpg_base_cit;
0040     struct config_item_type tf_tpg_lun_cit;
0041     struct config_item_type tf_tpg_port_cit;
0042     struct config_item_type tf_tpg_port_stat_cit;
0043     struct config_item_type tf_tpg_np_cit;
0044     struct config_item_type tf_tpg_np_base_cit;
0045     struct config_item_type tf_tpg_attrib_cit;
0046     struct config_item_type tf_tpg_auth_cit;
0047     struct config_item_type tf_tpg_param_cit;
0048     struct config_item_type tf_tpg_nacl_cit;
0049     struct config_item_type tf_tpg_nacl_base_cit;
0050     struct config_item_type tf_tpg_nacl_attrib_cit;
0051     struct config_item_type tf_tpg_nacl_auth_cit;
0052     struct config_item_type tf_tpg_nacl_param_cit;
0053     struct config_item_type tf_tpg_nacl_stat_cit;
0054     struct config_item_type tf_tpg_mappedlun_cit;
0055     struct config_item_type tf_tpg_mappedlun_stat_cit;
0056 };
0057
0058 /* target_core_alua.c */
0059 extern struct t10_alua_lu_gp *default_lu_gp;
0060
0061 /* target_core_device.c */
0062 int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev);
0063 struct se_dev_entry *core_get_se_deve_from_rtpi(struct se_node_acl *, u16);
0064 void    target_pr_kref_release(struct kref *);
0065 void    core_free_device_list_for_node(struct se_node_acl *,
0066         struct se_portal_group *);
0067 void    core_update_device_list_access(u64, bool, struct se_node_acl *);
0068 struct se_dev_entry *target_nacl_find_deve(struct se_node_acl *, u64);
0069 int core_enable_device_list_for_node(struct se_lun *, struct se_lun_acl *,
0070         u64, bool, struct se_node_acl *, struct se_portal_group *);
0071 void    core_disable_device_list_for_node(struct se_lun *, struct se_dev_entry *,
0072         struct se_node_acl *, struct se_portal_group *);
0073 void    core_clear_lun_from_tpg(struct se_lun *, struct se_portal_group *);
0074 int core_dev_add_lun(struct se_portal_group *, struct se_device *,
0075         struct se_lun *lun);
0076 void    core_dev_del_lun(struct se_portal_group *, struct se_lun *);
0077 struct se_lun_acl *core_dev_init_initiator_node_lun_acl(struct se_portal_group *,
0078         struct se_node_acl *, u64, int *);
0079 int core_dev_add_initiator_node_lun_acl(struct se_portal_group *,
0080         struct se_lun_acl *, struct se_lun *lun, bool);
0081 int core_dev_del_initiator_node_lun_acl(struct se_lun *,
0082         struct se_lun_acl *);
0083 void    core_dev_free_initiator_node_lun_acl(struct se_portal_group *,
0084         struct se_lun_acl *lacl);
0085 int core_dev_setup_virtual_lun0(void);
0086 void    core_dev_release_virtual_lun0(void);
0087 struct se_device *target_alloc_device(struct se_hba *hba, const char *name);
0088 int target_configure_device(struct se_device *dev);
0089 void    target_free_device(struct se_device *);
0090 int target_for_each_device(int (*fn)(struct se_device *dev, void *data),
0091                    void *data);
0092
0093 /* target_core_configfs.c */
0094 extern struct configfs_item_operations target_core_dev_item_ops;
0095 void    target_setup_backend_cits(struct target_backend *);
0096
0097 /* target_core_fabric_configfs.c */
0098 int target_fabric_setup_cits(struct target_fabric_configfs *);
0099
0100 /* target_core_fabric_lib.c */
0101 int target_get_pr_transport_id_len(struct se_node_acl *nacl,
0102         struct t10_pr_registration *pr_reg, int *format_code);
0103 int target_get_pr_transport_id(struct se_node_acl *nacl,
0104         struct t10_pr_registration *pr_reg, int *format_code,
0105         unsigned char *buf);
0106 const char *target_parse_pr_out_transport_id(struct se_portal_group *tpg,
0107         char *buf, u32 *out_tid_len, char **port_nexus_ptr);
0108
0109 /* target_core_hba.c */
0110 struct se_hba *core_alloc_hba(const char *, u32, u32);
0111 int core_delete_hba(struct se_hba *);
0112
0113 /* target_core_tmr.c */
0114 void    core_tmr_abort_task(struct se_device *, struct se_tmr_req *,
0115             struct se_session *);
0116 int core_tmr_lun_reset(struct se_device *, struct se_tmr_req *,
0117         struct list_head *, struct se_cmd *);
0118
0119 /* target_core_tpg.c */
0120 extern struct se_device *g_lun0_dev;
0121
0122 struct se_node_acl *__core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
0123         const char *);
0124 void    core_tpg_add_node_to_devs(struct se_node_acl *, struct se_portal_group *,
0125                   struct se_lun *);
0126 void    core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *);
0127 struct se_lun *core_tpg_alloc_lun(struct se_portal_group *, u64);
0128 int core_tpg_add_lun(struct se_portal_group *, struct se_lun *,
0129         bool, struct se_device *);
0130 void core_tpg_remove_lun(struct se_portal_group *, struct se_lun *);
0131 struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *tpg,
0132         const char *initiatorname);
0133 void core_tpg_del_initiator_node_acl(struct se_node_acl *acl);
0134
0135 /* target_core_transport.c */
0136 extern struct kmem_cache *se_tmr_req_cache;
0137
0138 int init_se_kmem_caches(void);
0139 void    release_se_kmem_caches(void);
0140 u32 scsi_get_new_index(scsi_index_t);
0141 void    transport_subsystem_check_init(void);
0142 void    transport_uninit_session(struct se_session *);
0143 unsigned char *transport_dump_cmd_direction(struct se_cmd *);
0144 void    transport_dump_dev_state(struct se_device *, char *, int *);
0145 void    transport_dump_dev_info(struct se_device *, struct se_lun *,
0146         unsigned long long, char *, int *);
0147 void    transport_dump_vpd_proto_id(struct t10_vpd *, unsigned char *, int);
0148 int transport_dump_vpd_assoc(struct t10_vpd *, unsigned char *, int);
0149 int transport_dump_vpd_ident_type(struct t10_vpd *, unsigned char *, int);
0150 int transport_dump_vpd_ident(struct t10_vpd *, unsigned char *, int);
0151 void    transport_clear_lun_ref(struct se_lun *);
0152 sense_reason_t  target_cmd_size_check(struct se_cmd *cmd, unsigned int size);
0153 void    target_qf_do_work(struct work_struct *work);
0154 void    target_do_delayed_work(struct work_struct *work);
0155 bool    target_check_wce(struct se_device *dev);
0156 bool    target_check_fua(struct se_device *dev);
0157 void    __target_execute_cmd(struct se_cmd *, bool);
0158 void    target_queued_submit_work(struct work_struct *work);
0159
0160 /* target_core_stat.c */
0161 void    target_stat_setup_dev_default_groups(struct se_device *);
0162 void    target_stat_setup_port_default_groups(struct se_lun *);
0163 void    target_stat_setup_mappedlun_default_groups(struct se_lun_acl *);
0164
0165 /* target_core_xcopy.c */
0166 extern struct se_portal_group xcopy_pt_tpg;
0167
0168 /* target_core_configfs.c */
0169 #define DB_ROOT_LEN     4096
0170 #define DB_ROOT_DEFAULT     "/var/target"
0171 #define DB_ROOT_PREFERRED   "/etc/target"
0172
0173 extern char db_root[];
0174
0175 #endif /* TARGET_CORE_INTERNAL_H */