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