projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| c66ac9db NB |
1 | #ifndef TARGET_CORE_ALUA_H |
| 2 | #define TARGET_CORE_ALUA_H | |
| 3 | ||
| 4 | /* | |
| 5 | * INQUIRY response data, TPGS Field | |
| 6 | * | |
| 7 | * from spc4r17 section 6.4.2 Table 135 | |
| 8 | */ | |
| 9 | #define TPGS_NO_ALUA 0x00 | |
| 10 | #define TPGS_IMPLICT_ALUA 0x10 | |
| 11 | #define TPGS_EXPLICT_ALUA 0x20 | |
| 12 | ||
| 13 | /* | |
| 14 | * ASYMMETRIC ACCESS STATE field | |
| 15 | * | |
| 16 | * from spc4r17 section 6.27 Table 245 | |
| 17 | */ | |
| 18 | #define ALUA_ACCESS_STATE_ACTIVE_OPTMIZED 0x0 | |
| 19 | #define ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED 0x1 | |
| 20 | #define ALUA_ACCESS_STATE_STANDBY 0x2 | |
| 21 | #define ALUA_ACCESS_STATE_UNAVAILABLE 0x3 | |
| 22 | #define ALUA_ACCESS_STATE_OFFLINE 0xe | |
| 23 | #define ALUA_ACCESS_STATE_TRANSITION 0xf | |
| 24 | ||
| 25 | /* | |
| 26 | * REPORT_TARGET_PORT_GROUP STATUS CODE | |
| 27 | * | |
| 28 | * from spc4r17 section 6.27 Table 246 | |
| 29 | */ | |
| 30 | #define ALUA_STATUS_NONE 0x00 | |
| 31 | #define ALUA_STATUS_ALTERED_BY_EXPLICT_STPG 0x01 | |
| 32 | #define ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA 0x02 | |
| 33 | ||
| 34 | /* | |
| 35 | * From spc4r17, Table D.1: ASC and ASCQ Assignement | |
| 36 | */ | |
| 37 | #define ASCQ_04H_ALUA_STATE_TRANSITION 0x0a | |
| 38 | #define ASCQ_04H_ALUA_TG_PT_STANDBY 0x0b | |
| 39 | #define ASCQ_04H_ALUA_TG_PT_UNAVAILABLE 0x0c | |
| 40 | #define ASCQ_04H_ALUA_OFFLINE 0x12 | |
| 41 | ||
| 42 | /* | |
| 43 | * Used as the default for Active/NonOptimized delay (in milliseconds) | |
| 44 | * This can also be changed via configfs on a per target port group basis.. | |
| 45 | */ | |
| 46 | #define ALUA_DEFAULT_NONOP_DELAY_MSECS 100 | |
| 47 | #define ALUA_MAX_NONOP_DELAY_MSECS 10000 /* 10 seconds */ | |
| 48 | /* | |
| 49 | * Used for implict and explict ALUA transitional delay, that is disabled | |
| 50 | * by default, and is intended to be used for debugging client side ALUA code. | |
| 51 | */ | |
| 52 | #define ALUA_DEFAULT_TRANS_DELAY_MSECS 0 | |
| 53 | #define ALUA_MAX_TRANS_DELAY_MSECS 30000 /* 30 seconds */ | |
| 5b9a4d72 NB |
54 | /* |
| 55 | * Used for the recommended application client implict transition timeout | |
| 56 | * in seconds, returned by the REPORT_TARGET_PORT_GROUPS w/ extended header. | |
| 57 | */ | |
| 58 | #define ALUA_DEFAULT_IMPLICT_TRANS_SECS 0 | |
| 59 | #define ALUA_MAX_IMPLICT_TRANS_SECS 255 | |
| c66ac9db NB |
60 | /* |
| 61 | * Used by core_alua_update_tpg_primary_metadata() and | |
| 62 | * core_alua_update_tpg_secondary_metadata() | |
| 63 | */ | |
| 64 | #define ALUA_METADATA_PATH_LEN 512 | |
| 65 | /* | |
| 66 | * Used by core_alua_update_tpg_secondary_metadata() | |
| 67 | */ | |
| 68 | #define ALUA_SECONDARY_METADATA_WWN_LEN 256 | |
| 69 | ||
| 70 | extern struct kmem_cache *t10_alua_lu_gp_cache; | |
| 71 | extern struct kmem_cache *t10_alua_lu_gp_mem_cache; | |
| 72 | extern struct kmem_cache *t10_alua_tg_pt_gp_cache; | |
| 73 | extern struct kmem_cache *t10_alua_tg_pt_gp_mem_cache; | |
| 74 | ||
| de103c93 CH |
75 | extern sense_reason_t target_emulate_report_target_port_groups(struct se_cmd *); |
| 76 | extern sense_reason_t target_emulate_set_target_port_groups(struct se_cmd *); | |
| c66ac9db NB |
77 | extern int core_alua_check_nonop_delay(struct se_cmd *); |
| 78 | extern int core_alua_do_port_transition(struct t10_alua_tg_pt_gp *, | |
| 79 | struct se_device *, struct se_port *, | |
| 80 | struct se_node_acl *, int, int); | |
| 81 | extern char *core_alua_dump_status(int); | |
| 82 | extern struct t10_alua_lu_gp *core_alua_allocate_lu_gp(const char *, int); | |
| 83 | extern int core_alua_set_lu_gp_id(struct t10_alua_lu_gp *, u16); | |
| 84 | extern void core_alua_free_lu_gp(struct t10_alua_lu_gp *); | |
| 85 | extern void core_alua_free_lu_gp_mem(struct se_device *); | |
| 86 | extern struct t10_alua_lu_gp *core_alua_get_lu_gp_by_name(const char *); | |
| 87 | extern void core_alua_put_lu_gp_from_name(struct t10_alua_lu_gp *); | |
| 88 | extern void __core_alua_attach_lu_gp_mem(struct t10_alua_lu_gp_member *, | |
| 89 | struct t10_alua_lu_gp *); | |
| 90 | extern void __core_alua_drop_lu_gp_mem(struct t10_alua_lu_gp_member *, | |
| 91 | struct t10_alua_lu_gp *); | |
| 92 | extern void core_alua_drop_lu_gp_dev(struct se_device *); | |
| 93 | extern struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp( | |
| 0fd97ccf | 94 | struct se_device *, const char *, int); |
| c66ac9db NB |
95 | extern int core_alua_set_tg_pt_gp_id(struct t10_alua_tg_pt_gp *, u16); |
| 96 | extern struct t10_alua_tg_pt_gp_member *core_alua_allocate_tg_pt_gp_mem( | |
| 97 | struct se_port *); | |
| 98 | extern void core_alua_free_tg_pt_gp(struct t10_alua_tg_pt_gp *); | |
| 99 | extern void core_alua_free_tg_pt_gp_mem(struct se_port *); | |
| 100 | extern void __core_alua_attach_tg_pt_gp_mem(struct t10_alua_tg_pt_gp_member *, | |
| 101 | struct t10_alua_tg_pt_gp *); | |
| 102 | extern ssize_t core_alua_show_tg_pt_gp_info(struct se_port *, char *); | |
| 103 | extern ssize_t core_alua_store_tg_pt_gp_info(struct se_port *, const char *, | |
| 104 | size_t); | |
| 105 | extern ssize_t core_alua_show_access_type(struct t10_alua_tg_pt_gp *, char *); | |
| 106 | extern ssize_t core_alua_store_access_type(struct t10_alua_tg_pt_gp *, | |
| 107 | const char *, size_t); | |
| 108 | extern ssize_t core_alua_show_nonop_delay_msecs(struct t10_alua_tg_pt_gp *, | |
| 109 | char *); | |
| 110 | extern ssize_t core_alua_store_nonop_delay_msecs(struct t10_alua_tg_pt_gp *, | |
| 111 | const char *, size_t); | |
| 112 | extern ssize_t core_alua_show_trans_delay_msecs(struct t10_alua_tg_pt_gp *, | |
| 113 | char *); | |
| 114 | extern ssize_t core_alua_store_trans_delay_msecs(struct t10_alua_tg_pt_gp *, | |
| 115 | const char *, size_t); | |
| 5b9a4d72 NB |
116 | extern ssize_t core_alua_show_implict_trans_secs(struct t10_alua_tg_pt_gp *, |
| 117 | char *); | |
| 118 | extern ssize_t core_alua_store_implict_trans_secs(struct t10_alua_tg_pt_gp *, | |
| 119 | const char *, size_t); | |
| c66ac9db NB |
120 | extern ssize_t core_alua_show_preferred_bit(struct t10_alua_tg_pt_gp *, |
| 121 | char *); | |
| 122 | extern ssize_t core_alua_store_preferred_bit(struct t10_alua_tg_pt_gp *, | |
| 123 | const char *, size_t); | |
| 124 | extern ssize_t core_alua_show_offline_bit(struct se_lun *, char *); | |
| 125 | extern ssize_t core_alua_store_offline_bit(struct se_lun *, const char *, | |
| 126 | size_t); | |
| 127 | extern ssize_t core_alua_show_secondary_status(struct se_lun *, char *); | |
| 128 | extern ssize_t core_alua_store_secondary_status(struct se_lun *, | |
| 129 | const char *, size_t); | |
| 130 | extern ssize_t core_alua_show_secondary_write_metadata(struct se_lun *, | |
| 131 | char *); | |
| 132 | extern ssize_t core_alua_store_secondary_write_metadata(struct se_lun *, | |
| 133 | const char *, size_t); | |
| 0fd97ccf | 134 | extern int core_setup_alua(struct se_device *); |
| de103c93 | 135 | extern sense_reason_t target_alua_state_check(struct se_cmd *cmd); |
| c66ac9db NB |
136 | |
| 137 | #endif /* TARGET_CORE_ALUA_H */ |