--- /dev/null
+#ifndef TARGET_CORE_ALUA_H
+#define TARGET_CORE_ALUA_H
+
+/*
+ * INQUIRY response data, TPGS Field
+ *
+ * from spc4r17 section 6.4.2 Table 135
+ */
+#define TPGS_NO_ALUA 0x00
+#define TPGS_IMPLICT_ALUA 0x10
+#define TPGS_EXPLICT_ALUA 0x20
+
+/*
+ * ASYMMETRIC ACCESS STATE field
+ *
+ * from spc4r17 section 6.27 Table 245
+ */
+#define ALUA_ACCESS_STATE_ACTIVE_OPTMIZED 0x0
+#define ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED 0x1
+#define ALUA_ACCESS_STATE_STANDBY 0x2
+#define ALUA_ACCESS_STATE_UNAVAILABLE 0x3
+#define ALUA_ACCESS_STATE_OFFLINE 0xe
+#define ALUA_ACCESS_STATE_TRANSITION 0xf
+
+/*
+ * REPORT_TARGET_PORT_GROUP STATUS CODE
+ *
+ * from spc4r17 section 6.27 Table 246
+ */
+#define ALUA_STATUS_NONE 0x00
+#define ALUA_STATUS_ALTERED_BY_EXPLICT_STPG 0x01
+#define ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA 0x02
+
+/*
+ * From spc4r17, Table D.1: ASC and ASCQ Assignement
+ */
+#define ASCQ_04H_ALUA_STATE_TRANSITION 0x0a
+#define ASCQ_04H_ALUA_TG_PT_STANDBY 0x0b
+#define ASCQ_04H_ALUA_TG_PT_UNAVAILABLE 0x0c
+#define ASCQ_04H_ALUA_OFFLINE 0x12
+
+/*
+ * Used as the default for Active/NonOptimized delay (in milliseconds)
+ * This can also be changed via configfs on a per target port group basis..
+ */
+#define ALUA_DEFAULT_NONOP_DELAY_MSECS 100
+#define ALUA_MAX_NONOP_DELAY_MSECS 10000 /* 10 seconds */
+/*
+ * Used for implict and explict ALUA transitional delay, that is disabled
+ * by default, and is intended to be used for debugging client side ALUA code.
+ */
+#define ALUA_DEFAULT_TRANS_DELAY_MSECS 0
+#define ALUA_MAX_TRANS_DELAY_MSECS 30000 /* 30 seconds */
+/*
+ * Used by core_alua_update_tpg_primary_metadata() and
+ * core_alua_update_tpg_secondary_metadata()
+ */
+#define ALUA_METADATA_PATH_LEN 512
+/*
+ * Used by core_alua_update_tpg_secondary_metadata()
+ */
+#define ALUA_SECONDARY_METADATA_WWN_LEN 256
+
+extern struct kmem_cache *t10_alua_lu_gp_cache;
+extern struct kmem_cache *t10_alua_lu_gp_mem_cache;
+extern struct kmem_cache *t10_alua_tg_pt_gp_cache;
+extern struct kmem_cache *t10_alua_tg_pt_gp_mem_cache;
+
+extern int core_emulate_report_target_port_groups(struct se_cmd *);
+extern int core_emulate_set_target_port_groups(struct se_cmd *);
+extern int core_alua_check_nonop_delay(struct se_cmd *);
+extern int core_alua_do_port_transition(struct t10_alua_tg_pt_gp *,
+ struct se_device *, struct se_port *,
+ struct se_node_acl *, int, int);
+extern char *core_alua_dump_status(int);
+extern struct t10_alua_lu_gp *core_alua_allocate_lu_gp(const char *, int);
+extern int core_alua_set_lu_gp_id(struct t10_alua_lu_gp *, u16);
+extern void core_alua_free_lu_gp(struct t10_alua_lu_gp *);
+extern void core_alua_free_lu_gp_mem(struct se_device *);
+extern struct t10_alua_lu_gp *core_alua_get_lu_gp_by_name(const char *);
+extern void core_alua_put_lu_gp_from_name(struct t10_alua_lu_gp *);
+extern void __core_alua_attach_lu_gp_mem(struct t10_alua_lu_gp_member *,
+ struct t10_alua_lu_gp *);
+extern void __core_alua_drop_lu_gp_mem(struct t10_alua_lu_gp_member *,
+ struct t10_alua_lu_gp *);
+extern void core_alua_drop_lu_gp_dev(struct se_device *);
+extern struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(
+ struct se_subsystem_dev *, const char *, int);
+extern int core_alua_set_tg_pt_gp_id(struct t10_alua_tg_pt_gp *, u16);
+extern struct t10_alua_tg_pt_gp_member *core_alua_allocate_tg_pt_gp_mem(
+ struct se_port *);
+extern void core_alua_free_tg_pt_gp(struct t10_alua_tg_pt_gp *);
+extern void core_alua_free_tg_pt_gp_mem(struct se_port *);
+extern void __core_alua_attach_tg_pt_gp_mem(struct t10_alua_tg_pt_gp_member *,
+ struct t10_alua_tg_pt_gp *);
+extern ssize_t core_alua_show_tg_pt_gp_info(struct se_port *, char *);
+extern ssize_t core_alua_store_tg_pt_gp_info(struct se_port *, const char *,
+ size_t);
+extern ssize_t core_alua_show_access_type(struct t10_alua_tg_pt_gp *, char *);
+extern ssize_t core_alua_store_access_type(struct t10_alua_tg_pt_gp *,
+ const char *, size_t);
+extern ssize_t core_alua_show_nonop_delay_msecs(struct t10_alua_tg_pt_gp *,
+ char *);
+extern ssize_t core_alua_store_nonop_delay_msecs(struct t10_alua_tg_pt_gp *,
+ const char *, size_t);
+extern ssize_t core_alua_show_trans_delay_msecs(struct t10_alua_tg_pt_gp *,
+ char *);
+extern ssize_t core_alua_store_trans_delay_msecs(struct t10_alua_tg_pt_gp *,
+ const char *, size_t);
+extern ssize_t core_alua_show_preferred_bit(struct t10_alua_tg_pt_gp *,
+ char *);
+extern ssize_t core_alua_store_preferred_bit(struct t10_alua_tg_pt_gp *,
+ const char *, size_t);
+extern ssize_t core_alua_show_offline_bit(struct se_lun *, char *);
+extern ssize_t core_alua_store_offline_bit(struct se_lun *, const char *,
+ size_t);
+extern ssize_t core_alua_show_secondary_status(struct se_lun *, char *);
+extern ssize_t core_alua_store_secondary_status(struct se_lun *,
+ const char *, size_t);
+extern ssize_t core_alua_show_secondary_write_metadata(struct se_lun *,
+ char *);
+extern ssize_t core_alua_store_secondary_write_metadata(struct se_lun *,
+ const char *, size_t);
+extern int core_setup_alua(struct se_device *, int);
+
+#endif /* TARGET_CORE_ALUA_H */
projects / mv-sheeva.git / blobdiff