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Commit | Line | Data |
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c66ac9db NB |
1 | #ifndef TARGET_CORE_ALUA_H |
2 | #define TARGET_CORE_ALUA_H | |
3 | ||
8dcf07be BVA |
4 | #include <target/target_core_base.h> |
5 | ||
c66ac9db NB |
6 | /* |
7 | * INQUIRY response data, TPGS Field | |
8 | * | |
9 | * from spc4r17 section 6.4.2 Table 135 | |
10 | */ | |
11 | #define TPGS_NO_ALUA 0x00 | |
125d0119 HR |
12 | #define TPGS_IMPLICIT_ALUA 0x10 |
13 | #define TPGS_EXPLICIT_ALUA 0x20 | |
c66ac9db NB |
14 | |
15 | /* | |
16 | * ASYMMETRIC ACCESS STATE field | |
17 | * | |
c66094bf | 18 | * from spc4r36j section 6.37 Table 307 |
c66ac9db | 19 | */ |
73f3bf51 | 20 | #define ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED 0x0 |
c66ac9db NB |
21 | #define ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED 0x1 |
22 | #define ALUA_ACCESS_STATE_STANDBY 0x2 | |
23 | #define ALUA_ACCESS_STATE_UNAVAILABLE 0x3 | |
c66094bf | 24 | #define ALUA_ACCESS_STATE_LBA_DEPENDENT 0x4 |
c66ac9db NB |
25 | #define ALUA_ACCESS_STATE_OFFLINE 0xe |
26 | #define ALUA_ACCESS_STATE_TRANSITION 0xf | |
27 | ||
c0dc941e HR |
28 | /* |
29 | * from spc4r36j section 6.37 Table 306 | |
30 | */ | |
31 | #define ALUA_T_SUP 0x80 | |
32 | #define ALUA_O_SUP 0x40 | |
33 | #define ALUA_LBD_SUP 0x10 | |
34 | #define ALUA_U_SUP 0x08 | |
35 | #define ALUA_S_SUP 0x04 | |
36 | #define ALUA_AN_SUP 0x02 | |
37 | #define ALUA_AO_SUP 0x01 | |
38 | ||
c66ac9db NB |
39 | /* |
40 | * REPORT_TARGET_PORT_GROUP STATUS CODE | |
41 | * | |
42 | * from spc4r17 section 6.27 Table 246 | |
43 | */ | |
44 | #define ALUA_STATUS_NONE 0x00 | |
125d0119 HR |
45 | #define ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG 0x01 |
46 | #define ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA 0x02 | |
c66ac9db NB |
47 | |
48 | /* | |
49 | * From spc4r17, Table D.1: ASC and ASCQ Assignement | |
50 | */ | |
51 | #define ASCQ_04H_ALUA_STATE_TRANSITION 0x0a | |
52 | #define ASCQ_04H_ALUA_TG_PT_STANDBY 0x0b | |
53 | #define ASCQ_04H_ALUA_TG_PT_UNAVAILABLE 0x0c | |
54 | #define ASCQ_04H_ALUA_OFFLINE 0x12 | |
55 | ||
56 | /* | |
57 | * Used as the default for Active/NonOptimized delay (in milliseconds) | |
58 | * This can also be changed via configfs on a per target port group basis.. | |
59 | */ | |
60 | #define ALUA_DEFAULT_NONOP_DELAY_MSECS 100 | |
61 | #define ALUA_MAX_NONOP_DELAY_MSECS 10000 /* 10 seconds */ | |
62 | /* | |
125d0119 | 63 | * Used for implicit and explicit ALUA transitional delay, that is disabled |
c66ac9db NB |
64 | * by default, and is intended to be used for debugging client side ALUA code. |
65 | */ | |
66 | #define ALUA_DEFAULT_TRANS_DELAY_MSECS 0 | |
67 | #define ALUA_MAX_TRANS_DELAY_MSECS 30000 /* 30 seconds */ | |
5b9a4d72 | 68 | /* |
125d0119 | 69 | * Used for the recommended application client implicit transition timeout |
5b9a4d72 NB |
70 | * in seconds, returned by the REPORT_TARGET_PORT_GROUPS w/ extended header. |
71 | */ | |
125d0119 HR |
72 | #define ALUA_DEFAULT_IMPLICIT_TRANS_SECS 0 |
73 | #define ALUA_MAX_IMPLICIT_TRANS_SECS 255 | |
c66ac9db NB |
74 | /* |
75 | * Used by core_alua_update_tpg_primary_metadata() and | |
76 | * core_alua_update_tpg_secondary_metadata() | |
77 | */ | |
78 | #define ALUA_METADATA_PATH_LEN 512 | |
79 | /* | |
80 | * Used by core_alua_update_tpg_secondary_metadata() | |
81 | */ | |
82 | #define ALUA_SECONDARY_METADATA_WWN_LEN 256 | |
83 | ||
1e0b9403 HR |
84 | /* Used by core_alua_update_tpg_(primary,secondary)_metadata */ |
85 | #define ALUA_MD_BUF_LEN 1024 | |
86 | ||
c66ac9db NB |
87 | extern struct kmem_cache *t10_alua_lu_gp_cache; |
88 | extern struct kmem_cache *t10_alua_lu_gp_mem_cache; | |
89 | extern struct kmem_cache *t10_alua_tg_pt_gp_cache; | |
229d4f11 HR |
90 | extern struct kmem_cache *t10_alua_lba_map_cache; |
91 | extern struct kmem_cache *t10_alua_lba_map_mem_cache; | |
c66ac9db | 92 | |
de103c93 CH |
93 | extern sense_reason_t target_emulate_report_target_port_groups(struct se_cmd *); |
94 | extern sense_reason_t target_emulate_set_target_port_groups(struct se_cmd *); | |
c66094bf | 95 | extern sense_reason_t target_emulate_report_referrals(struct se_cmd *); |
c66ac9db NB |
96 | extern int core_alua_check_nonop_delay(struct se_cmd *); |
97 | extern int core_alua_do_port_transition(struct t10_alua_tg_pt_gp *, | |
adf653f9 | 98 | struct se_device *, struct se_lun *, |
c66ac9db NB |
99 | struct se_node_acl *, int, int); |
100 | extern char *core_alua_dump_status(int); | |
229d4f11 HR |
101 | extern struct t10_alua_lba_map *core_alua_allocate_lba_map( |
102 | struct list_head *, u64, u64); | |
103 | extern int core_alua_allocate_lba_map_mem(struct t10_alua_lba_map *, int, int); | |
104 | extern void core_alua_free_lba_map(struct list_head *); | |
105 | extern void core_alua_set_lba_map(struct se_device *, struct list_head *, | |
106 | int, int); | |
c66ac9db NB |
107 | extern struct t10_alua_lu_gp *core_alua_allocate_lu_gp(const char *, int); |
108 | extern int core_alua_set_lu_gp_id(struct t10_alua_lu_gp *, u16); | |
109 | extern void core_alua_free_lu_gp(struct t10_alua_lu_gp *); | |
110 | extern void core_alua_free_lu_gp_mem(struct se_device *); | |
111 | extern struct t10_alua_lu_gp *core_alua_get_lu_gp_by_name(const char *); | |
112 | extern void core_alua_put_lu_gp_from_name(struct t10_alua_lu_gp *); | |
113 | extern void __core_alua_attach_lu_gp_mem(struct t10_alua_lu_gp_member *, | |
114 | struct t10_alua_lu_gp *); | |
115 | extern void __core_alua_drop_lu_gp_mem(struct t10_alua_lu_gp_member *, | |
116 | struct t10_alua_lu_gp *); | |
117 | extern void core_alua_drop_lu_gp_dev(struct se_device *); | |
118 | extern struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp( | |
0fd97ccf | 119 | struct se_device *, const char *, int); |
c66ac9db | 120 | extern int core_alua_set_tg_pt_gp_id(struct t10_alua_tg_pt_gp *, u16); |
c66ac9db | 121 | extern void core_alua_free_tg_pt_gp(struct t10_alua_tg_pt_gp *); |
adf653f9 CH |
122 | extern void target_detach_tg_pt_gp(struct se_lun *); |
123 | extern void target_attach_tg_pt_gp(struct se_lun *, struct t10_alua_tg_pt_gp *); | |
124 | extern ssize_t core_alua_show_tg_pt_gp_info(struct se_lun *, char *); | |
125 | extern ssize_t core_alua_store_tg_pt_gp_info(struct se_lun *, const char *, | |
c66ac9db NB |
126 | size_t); |
127 | extern ssize_t core_alua_show_access_type(struct t10_alua_tg_pt_gp *, char *); | |
128 | extern ssize_t core_alua_store_access_type(struct t10_alua_tg_pt_gp *, | |
129 | const char *, size_t); | |
130 | extern ssize_t core_alua_show_nonop_delay_msecs(struct t10_alua_tg_pt_gp *, | |
131 | char *); | |
132 | extern ssize_t core_alua_store_nonop_delay_msecs(struct t10_alua_tg_pt_gp *, | |
133 | const char *, size_t); | |
134 | extern ssize_t core_alua_show_trans_delay_msecs(struct t10_alua_tg_pt_gp *, | |
135 | char *); | |
136 | extern ssize_t core_alua_store_trans_delay_msecs(struct t10_alua_tg_pt_gp *, | |
137 | const char *, size_t); | |
125d0119 | 138 | extern ssize_t core_alua_show_implicit_trans_secs(struct t10_alua_tg_pt_gp *, |
5b9a4d72 | 139 | char *); |
125d0119 | 140 | extern ssize_t core_alua_store_implicit_trans_secs(struct t10_alua_tg_pt_gp *, |
5b9a4d72 | 141 | const char *, size_t); |
c66ac9db NB |
142 | extern ssize_t core_alua_show_preferred_bit(struct t10_alua_tg_pt_gp *, |
143 | char *); | |
144 | extern ssize_t core_alua_store_preferred_bit(struct t10_alua_tg_pt_gp *, | |
145 | const char *, size_t); | |
146 | extern ssize_t core_alua_show_offline_bit(struct se_lun *, char *); | |
147 | extern ssize_t core_alua_store_offline_bit(struct se_lun *, const char *, | |
148 | size_t); | |
149 | extern ssize_t core_alua_show_secondary_status(struct se_lun *, char *); | |
150 | extern ssize_t core_alua_store_secondary_status(struct se_lun *, | |
151 | const char *, size_t); | |
152 | extern ssize_t core_alua_show_secondary_write_metadata(struct se_lun *, | |
153 | char *); | |
154 | extern ssize_t core_alua_store_secondary_write_metadata(struct se_lun *, | |
155 | const char *, size_t); | |
0fd97ccf | 156 | extern int core_setup_alua(struct se_device *); |
de103c93 | 157 | extern sense_reason_t target_alua_state_check(struct se_cmd *cmd); |
c66ac9db NB |
158 | |
159 | #endif /* TARGET_CORE_ALUA_H */ |