/* SPDX-License-Identifier: GPL-2.0 */ #ifndef TARGET_CORE_ALUA_H #define TARGET_CORE_ALUA_H #include <target/target_core_base.h> /* * INQUIRY response data, TPGS Field * * from spc4r17 section 6.4.2 Table 135 */ #define TPGS_NO_ALUA … #define TPGS_IMPLICIT_ALUA … #define TPGS_EXPLICIT_ALUA … /* * ASYMMETRIC ACCESS STATE field * * from spc4r36j section 6.37 Table 307 */ #define ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED … #define ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED … #define ALUA_ACCESS_STATE_STANDBY … #define ALUA_ACCESS_STATE_UNAVAILABLE … #define ALUA_ACCESS_STATE_LBA_DEPENDENT … #define ALUA_ACCESS_STATE_OFFLINE … #define ALUA_ACCESS_STATE_TRANSITION … /* * from spc4r36j section 6.37 Table 306 */ #define ALUA_T_SUP … #define ALUA_O_SUP … #define ALUA_LBD_SUP … #define ALUA_U_SUP … #define ALUA_S_SUP … #define ALUA_AN_SUP … #define ALUA_AO_SUP … /* * REPORT_TARGET_PORT_GROUP STATUS CODE * * from spc4r17 section 6.27 Table 246 */ #define ALUA_STATUS_NONE … #define ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG … #define ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA … /* * From spc4r17, Table D.1: ASC and ASCQ Assignement */ #define ASCQ_04H_ALUA_STATE_TRANSITION … #define ASCQ_04H_ALUA_TG_PT_STANDBY … #define ASCQ_04H_ALUA_TG_PT_UNAVAILABLE … #define ASCQ_04H_ALUA_OFFLINE … /* * 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 … #define ALUA_MAX_NONOP_DELAY_MSECS … /* * Used for implicit and explicit 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 … #define ALUA_MAX_TRANS_DELAY_MSECS … /* * Used for the recommended application client implicit transition timeout * in seconds, returned by the REPORT_TARGET_PORT_GROUPS w/ extended header. */ #define ALUA_DEFAULT_IMPLICIT_TRANS_SECS … #define ALUA_MAX_IMPLICIT_TRANS_SECS … /* Used by core_alua_update_tpg_(primary,secondary)_metadata */ #define ALUA_MD_BUF_LEN … 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_lba_map_cache; extern struct kmem_cache *t10_alua_lba_map_mem_cache; extern sense_reason_t target_emulate_report_target_port_groups(struct se_cmd *); extern sense_reason_t target_emulate_set_target_port_groups(struct se_cmd *); extern sense_reason_t target_emulate_report_referrals(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_lun *, struct se_node_acl *, int, int); extern char *core_alua_dump_status(int); extern struct t10_alua_lba_map *core_alua_allocate_lba_map( struct list_head *, u64, u64); extern int core_alua_allocate_lba_map_mem(struct t10_alua_lba_map *, int, int); extern void core_alua_free_lba_map(struct list_head *); extern void core_alua_set_lba_map(struct se_device *, struct list_head *, int, 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_device *, const char *, int); extern int core_alua_set_tg_pt_gp_id(struct t10_alua_tg_pt_gp *, u16); extern void core_alua_free_tg_pt_gp(struct t10_alua_tg_pt_gp *); extern void target_detach_tg_pt_gp(struct se_lun *); extern void target_attach_tg_pt_gp(struct se_lun *, struct t10_alua_tg_pt_gp *); extern ssize_t core_alua_show_tg_pt_gp_info(struct se_lun *, char *); extern ssize_t core_alua_store_tg_pt_gp_info(struct se_lun *, 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_implicit_trans_secs(struct t10_alua_tg_pt_gp *, char *); extern ssize_t core_alua_store_implicit_trans_secs(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 *); extern sense_reason_t target_alua_state_check(struct se_cmd *cmd); #endif /* TARGET_CORE_ALUA_H */
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