Commit | Line | Data |
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c66ac9db NB |
1 | #ifndef TARGET_CORE_BASE_H |
2 | #define TARGET_CORE_BASE_H | |
3 | ||
4 | #include <linux/in.h> | |
5 | #include <linux/configfs.h> | |
6 | #include <linux/dma-mapping.h> | |
7 | #include <linux/blkdev.h> | |
8 | #include <scsi/scsi_cmnd.h> | |
9 | #include <net/sock.h> | |
10 | #include <net/tcp.h> | |
c66ac9db | 11 | |
9765b1f3 | 12 | #define TARGET_CORE_MOD_VERSION "v4.1.0-rc2-ml" |
c4795fb2 | 13 | #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION |
c66ac9db | 14 | |
c66ac9db | 15 | /* Maximum Number of LUNs per Target Portal Group */ |
d0229ae3 | 16 | /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */ |
c66ac9db NB |
17 | #define TRANSPORT_MAX_LUNS_PER_TPG 256 |
18 | /* | |
19 | * By default we use 32-byte CDBs in TCM Core and subsystem plugin code. | |
20 | * | |
21 | * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and | |
22 | * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use | |
23 | * 16-byte CDBs by default and require an extra allocation for | |
25985edc | 24 | * 32-byte CDBs to because of legacy issues. |
c66ac9db NB |
25 | * |
26 | * Within TCM Core there are no such legacy limitiations, so we go ahead | |
27 | * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size() | |
28 | * within all TCM Core and subsystem plugin code. | |
29 | */ | |
30 | #define TCM_MAX_COMMAND_SIZE 32 | |
31 | /* | |
32 | * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently | |
33 | * defined 96, but the real limit is 252 (or 260 including the header) | |
34 | */ | |
35 | #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE | |
36 | /* Used by transport_send_check_condition_and_sense() */ | |
37 | #define SPC_SENSE_KEY_OFFSET 2 | |
895f3022 | 38 | #define SPC_ADD_SENSE_LEN_OFFSET 7 |
c66ac9db NB |
39 | #define SPC_ASC_KEY_OFFSET 12 |
40 | #define SPC_ASCQ_KEY_OFFSET 13 | |
41 | #define TRANSPORT_IQN_LEN 224 | |
42 | /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */ | |
43 | #define LU_GROUP_NAME_BUF 256 | |
44 | /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */ | |
45 | #define TG_PT_GROUP_NAME_BUF 256 | |
46 | /* Used to parse VPD into struct t10_vpd */ | |
703d641d | 47 | #define VPD_TMP_BUF_SIZE 254 |
c66ac9db NB |
48 | /* Used by transport_generic_cmd_sequencer() */ |
49 | #define READ_BLOCK_LEN 6 | |
50 | #define READ_CAP_LEN 8 | |
51 | #define READ_POSITION_LEN 20 | |
52 | #define INQUIRY_LEN 36 | |
53 | /* Used by transport_get_inquiry_vpd_serial() */ | |
54 | #define INQUIRY_VPD_SERIAL_LEN 254 | |
55 | /* Used by transport_get_inquiry_vpd_device_ident() */ | |
56 | #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254 | |
57 | ||
c4795fb2 CH |
58 | /* Attempts before moving from SHORT to LONG */ |
59 | #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 | |
60 | #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ | |
61 | #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */ | |
62 | ||
63 | #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ | |
64 | ||
c4795fb2 CH |
65 | /* struct se_dev_attrib sanity values */ |
66 | /* Default max_unmap_lba_count */ | |
67 | #define DA_MAX_UNMAP_LBA_COUNT 0 | |
68 | /* Default max_unmap_block_desc_count */ | |
69 | #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0 | |
70 | /* Default unmap_granularity */ | |
71 | #define DA_UNMAP_GRANULARITY_DEFAULT 0 | |
72 | /* Default unmap_granularity_alignment */ | |
73 | #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 | |
773cbaf7 NB |
74 | /* Default max_write_same_len, disabled by default */ |
75 | #define DA_MAX_WRITE_SAME_LEN 0 | |
015487b8 RD |
76 | /* Default max transfer length */ |
77 | #define DA_FABRIC_MAX_SECTORS 8192 | |
adfa9570 TB |
78 | /* Use a model alias based on the configfs backend device name */ |
79 | #define DA_EMULATE_MODEL_ALIAS 0 | |
c4795fb2 CH |
80 | /* Emulation for Direct Page Out */ |
81 | #define DA_EMULATE_DPO 0 | |
82 | /* Emulation for Forced Unit Access WRITEs */ | |
83 | #define DA_EMULATE_FUA_WRITE 1 | |
84 | /* Emulation for Forced Unit Access READs */ | |
85 | #define DA_EMULATE_FUA_READ 0 | |
86 | /* Emulation for WriteCache and SYNCHRONIZE_CACHE */ | |
87 | #define DA_EMULATE_WRITE_CACHE 0 | |
88 | /* Emulation for UNIT ATTENTION Interlock Control */ | |
89 | #define DA_EMULATE_UA_INTLLCK_CTRL 0 | |
90 | /* Emulation for TASK_ABORTED status (TAS) by default */ | |
91 | #define DA_EMULATE_TAS 1 | |
92 | /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ | |
93 | #define DA_EMULATE_TPU 0 | |
94 | /* | |
95 | * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using | |
96 | * block/blk-lib.c:blkdev_issue_discard() | |
97 | */ | |
98 | #define DA_EMULATE_TPWS 0 | |
99 | /* No Emulation for PSCSI by default */ | |
c4795fb2 CH |
100 | #define DA_EMULATE_ALUA 0 |
101 | /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ | |
102 | #define DA_ENFORCE_PR_ISIDS 1 | |
103 | #define DA_STATUS_MAX_SECTORS_MIN 16 | |
104 | #define DA_STATUS_MAX_SECTORS_MAX 8192 | |
105 | /* By default don't report non-rotating (solid state) medium */ | |
106 | #define DA_IS_NONROT 0 | |
107 | /* Queue Algorithm Modifier default for restricted reordering in control mode page */ | |
108 | #define DA_EMULATE_REST_REORD 0 | |
109 | ||
d95b8246 | 110 | #define SE_INQUIRY_BUF 512 |
c4795fb2 | 111 | #define SE_MODE_PAGE_BUF 512 |
32a8811f | 112 | #define SE_SENSE_BUF 96 |
c4795fb2 | 113 | |
c66ac9db NB |
114 | /* struct se_hba->hba_flags */ |
115 | enum hba_flags_table { | |
116 | HBA_FLAGS_INTERNAL_USE = 0x01, | |
117 | HBA_FLAGS_PSCSI_MODE = 0x02, | |
118 | }; | |
119 | ||
120 | /* struct se_lun->lun_status */ | |
121 | enum transport_lun_status_table { | |
122 | TRANSPORT_LUN_STATUS_FREE = 0, | |
123 | TRANSPORT_LUN_STATUS_ACTIVE = 1, | |
124 | }; | |
125 | ||
126 | /* struct se_portal_group->se_tpg_type */ | |
127 | enum transport_tpg_type_table { | |
128 | TRANSPORT_TPG_TYPE_NORMAL = 0, | |
129 | TRANSPORT_TPG_TYPE_DISCOVERY = 1, | |
130 | }; | |
131 | ||
c66ac9db NB |
132 | /* Special transport agnostic struct se_cmd->t_states */ |
133 | enum transport_state_table { | |
134 | TRANSPORT_NO_STATE = 0, | |
135 | TRANSPORT_NEW_CMD = 1, | |
c66ac9db | 136 | TRANSPORT_WRITE_PENDING = 3, |
c66ac9db | 137 | TRANSPORT_PROCESSING = 5, |
35e0e757 | 138 | TRANSPORT_COMPLETE = 6, |
c66ac9db | 139 | TRANSPORT_ISTATE_PROCESSING = 11, |
07bde79a | 140 | TRANSPORT_COMPLETE_QF_WP = 18, |
e057f533 | 141 | TRANSPORT_COMPLETE_QF_OK = 19, |
c66ac9db NB |
142 | }; |
143 | ||
144 | /* Used for struct se_cmd->se_cmd_flags */ | |
145 | enum se_cmd_flags_table { | |
146 | SCF_SUPPORTED_SAM_OPCODE = 0x00000001, | |
147 | SCF_TRANSPORT_TASK_SENSE = 0x00000002, | |
148 | SCF_EMULATED_TASK_SENSE = 0x00000004, | |
64f1db38 CH |
149 | SCF_SCSI_DATA_CDB = 0x00000008, |
150 | SCF_SCSI_TMR_CDB = 0x00000010, | |
64f1db38 CH |
151 | SCF_FUA = 0x00000080, |
152 | SCF_SE_LUN_CMD = 0x00000100, | |
64f1db38 CH |
153 | SCF_BIDI = 0x00000400, |
154 | SCF_SENT_CHECK_CONDITION = 0x00000800, | |
155 | SCF_OVERFLOW_BIT = 0x00001000, | |
156 | SCF_UNDERFLOW_BIT = 0x00002000, | |
157 | SCF_SENT_DELAYED_TAS = 0x00004000, | |
158 | SCF_ALUA_NON_OPTIMIZED = 0x00008000, | |
64f1db38 CH |
159 | SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, |
160 | SCF_ACK_KREF = 0x00040000, | |
c66ac9db NB |
161 | }; |
162 | ||
163 | /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ | |
164 | enum transport_lunflags_table { | |
165 | TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, | |
166 | TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, | |
167 | TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, | |
168 | TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, | |
169 | }; | |
170 | ||
c66ac9db | 171 | /* |
de103c93 | 172 | * Used by transport_send_check_condition_and_sense() |
c66ac9db NB |
173 | * to signal which ASC/ASCQ sense payload should be built. |
174 | */ | |
de103c93 CH |
175 | typedef unsigned __bitwise__ sense_reason_t; |
176 | ||
c66ac9db | 177 | enum tcm_sense_reason_table { |
de103c93 | 178 | #define R(x) (__force sense_reason_t )(x) |
ba829137 | 179 | TCM_NO_SENSE = R(0x00), |
de103c93 CH |
180 | TCM_NON_EXISTENT_LUN = R(0x01), |
181 | TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), | |
182 | TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), | |
183 | TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), | |
184 | TCM_SERVICE_CRC_ERROR = R(0x05), | |
185 | TCM_SNACK_REJECTED = R(0x06), | |
186 | TCM_SECTOR_COUNT_TOO_MANY = R(0x07), | |
187 | TCM_INVALID_CDB_FIELD = R(0x08), | |
188 | TCM_INVALID_PARAMETER_LIST = R(0x09), | |
189 | TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), | |
190 | TCM_UNKNOWN_MODE_PAGE = R(0x0b), | |
191 | TCM_WRITE_PROTECTED = R(0x0c), | |
192 | TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), | |
193 | TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), | |
194 | TCM_CHECK_CONDITION_NOT_READY = R(0x0f), | |
195 | TCM_RESERVATION_CONFLICT = R(0x10), | |
196 | TCM_ADDRESS_OUT_OF_RANGE = R(0x11), | |
197 | TCM_OUT_OF_RESOURCES = R(0x12), | |
bb992e72 | 198 | TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), |
de103c93 | 199 | #undef R |
c66ac9db NB |
200 | }; |
201 | ||
a6360785 NB |
202 | enum target_sc_flags_table { |
203 | TARGET_SCF_BIDI_OP = 0x01, | |
204 | TARGET_SCF_ACK_KREF = 0x02, | |
b0d79946 | 205 | TARGET_SCF_UNKNOWN_SIZE = 0x04, |
a6360785 NB |
206 | }; |
207 | ||
c4795fb2 CH |
208 | /* fabric independent task management function values */ |
209 | enum tcm_tmreq_table { | |
210 | TMR_ABORT_TASK = 1, | |
211 | TMR_ABORT_TASK_SET = 2, | |
212 | TMR_CLEAR_ACA = 3, | |
213 | TMR_CLEAR_TASK_SET = 4, | |
214 | TMR_LUN_RESET = 5, | |
215 | TMR_TARGET_WARM_RESET = 6, | |
216 | TMR_TARGET_COLD_RESET = 7, | |
c4795fb2 CH |
217 | }; |
218 | ||
219 | /* fabric independent task management response values */ | |
220 | enum tcm_tmrsp_table { | |
11fee8a7 JE |
221 | TMR_FUNCTION_COMPLETE = 1, |
222 | TMR_TASK_DOES_NOT_EXIST = 2, | |
223 | TMR_LUN_DOES_NOT_EXIST = 3, | |
224 | TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, | |
225 | TMR_FUNCTION_REJECTED = 5, | |
c4795fb2 CH |
226 | }; |
227 | ||
e89d15ee NB |
228 | /* |
229 | * Used for target SCSI statistics | |
230 | */ | |
231 | typedef enum { | |
232 | SCSI_INST_INDEX, | |
233 | SCSI_DEVICE_INDEX, | |
234 | SCSI_AUTH_INTR_INDEX, | |
235 | SCSI_INDEX_TYPE_MAX | |
236 | } scsi_index_t; | |
237 | ||
c66ac9db NB |
238 | struct se_cmd; |
239 | ||
240 | struct t10_alua { | |
c66ac9db NB |
241 | /* ALUA Target Port Group ID */ |
242 | u16 alua_tg_pt_gps_counter; | |
243 | u32 alua_tg_pt_gps_count; | |
244 | spinlock_t tg_pt_gps_lock; | |
0fd97ccf | 245 | struct se_device *t10_dev; |
c66ac9db NB |
246 | /* Used for default ALUA Target Port Group */ |
247 | struct t10_alua_tg_pt_gp *default_tg_pt_gp; | |
248 | /* Used for default ALUA Target Port Group ConfigFS group */ | |
249 | struct config_group alua_tg_pt_gps_group; | |
c66ac9db | 250 | struct list_head tg_pt_gps_list; |
e0a53e70 | 251 | }; |
c66ac9db NB |
252 | |
253 | struct t10_alua_lu_gp { | |
254 | u16 lu_gp_id; | |
255 | int lu_gp_valid_id; | |
256 | u32 lu_gp_members; | |
c66ac9db NB |
257 | atomic_t lu_gp_ref_cnt; |
258 | spinlock_t lu_gp_lock; | |
259 | struct config_group lu_gp_group; | |
e3d6f909 | 260 | struct list_head lu_gp_node; |
c66ac9db | 261 | struct list_head lu_gp_mem_list; |
e0a53e70 | 262 | }; |
c66ac9db NB |
263 | |
264 | struct t10_alua_lu_gp_member { | |
5dd7ed2e | 265 | bool lu_gp_assoc; |
c66ac9db NB |
266 | atomic_t lu_gp_mem_ref_cnt; |
267 | spinlock_t lu_gp_mem_lock; | |
268 | struct t10_alua_lu_gp *lu_gp; | |
269 | struct se_device *lu_gp_mem_dev; | |
270 | struct list_head lu_gp_mem_list; | |
e0a53e70 | 271 | }; |
c66ac9db NB |
272 | |
273 | struct t10_alua_tg_pt_gp { | |
274 | u16 tg_pt_gp_id; | |
275 | int tg_pt_gp_valid_id; | |
276 | int tg_pt_gp_alua_access_status; | |
277 | int tg_pt_gp_alua_access_type; | |
278 | int tg_pt_gp_nonop_delay_msecs; | |
279 | int tg_pt_gp_trans_delay_msecs; | |
5b9a4d72 | 280 | int tg_pt_gp_implict_trans_secs; |
c66ac9db NB |
281 | int tg_pt_gp_pref; |
282 | int tg_pt_gp_write_metadata; | |
283 | /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ | |
284 | #define ALUA_MD_BUF_LEN 1024 | |
285 | u32 tg_pt_gp_md_buf_len; | |
286 | u32 tg_pt_gp_members; | |
287 | atomic_t tg_pt_gp_alua_access_state; | |
288 | atomic_t tg_pt_gp_ref_cnt; | |
289 | spinlock_t tg_pt_gp_lock; | |
290 | struct mutex tg_pt_gp_md_mutex; | |
0fd97ccf | 291 | struct se_device *tg_pt_gp_dev; |
c66ac9db NB |
292 | struct config_group tg_pt_gp_group; |
293 | struct list_head tg_pt_gp_list; | |
294 | struct list_head tg_pt_gp_mem_list; | |
e0a53e70 | 295 | }; |
c66ac9db NB |
296 | |
297 | struct t10_alua_tg_pt_gp_member { | |
5dd7ed2e | 298 | bool tg_pt_gp_assoc; |
c66ac9db NB |
299 | atomic_t tg_pt_gp_mem_ref_cnt; |
300 | spinlock_t tg_pt_gp_mem_lock; | |
301 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
302 | struct se_port *tg_pt; | |
303 | struct list_head tg_pt_gp_mem_list; | |
e0a53e70 | 304 | }; |
c66ac9db NB |
305 | |
306 | struct t10_vpd { | |
307 | unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; | |
308 | int protocol_identifier_set; | |
309 | u32 protocol_identifier; | |
310 | u32 device_identifier_code_set; | |
311 | u32 association; | |
312 | u32 device_identifier_type; | |
313 | struct list_head vpd_list; | |
e0a53e70 | 314 | }; |
c66ac9db NB |
315 | |
316 | struct t10_wwn { | |
e3d6f909 AG |
317 | char vendor[8]; |
318 | char model[16]; | |
319 | char revision[4]; | |
320 | char unit_serial[INQUIRY_VPD_SERIAL_LEN]; | |
c66ac9db | 321 | spinlock_t t10_vpd_lock; |
0fd97ccf | 322 | struct se_device *t10_dev; |
c66ac9db NB |
323 | struct config_group t10_wwn_group; |
324 | struct list_head t10_vpd_list; | |
e0a53e70 | 325 | }; |
c66ac9db | 326 | |
c66ac9db NB |
327 | struct t10_pr_registration { |
328 | /* Used for fabrics that contain WWN+ISID */ | |
329 | #define PR_REG_ISID_LEN 16 | |
330 | /* PR_REG_ISID_LEN + ',i,0x' */ | |
331 | #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) | |
332 | char pr_reg_isid[PR_REG_ISID_LEN]; | |
333 | /* Used during APTPL metadata reading */ | |
334 | #define PR_APTPL_MAX_IPORT_LEN 256 | |
335 | unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; | |
336 | /* Used during APTPL metadata reading */ | |
337 | #define PR_APTPL_MAX_TPORT_LEN 256 | |
338 | unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; | |
c66ac9db NB |
339 | u16 pr_aptpl_rpti; |
340 | u16 pr_reg_tpgt; | |
341 | /* Reservation effects all target ports */ | |
342 | int pr_reg_all_tg_pt; | |
343 | /* Activate Persistence across Target Power Loss */ | |
344 | int pr_reg_aptpl; | |
345 | int pr_res_holder; | |
346 | int pr_res_type; | |
347 | int pr_res_scope; | |
348 | /* Used for fabric initiator WWPNs using a ISID */ | |
5dd7ed2e | 349 | bool isid_present_at_reg; |
c66ac9db NB |
350 | u32 pr_res_mapped_lun; |
351 | u32 pr_aptpl_target_lun; | |
352 | u32 pr_res_generation; | |
353 | u64 pr_reg_bin_isid; | |
354 | u64 pr_res_key; | |
355 | atomic_t pr_res_holders; | |
356 | struct se_node_acl *pr_reg_nacl; | |
357 | struct se_dev_entry *pr_reg_deve; | |
358 | struct se_lun *pr_reg_tg_pt_lun; | |
359 | struct list_head pr_reg_list; | |
360 | struct list_head pr_reg_abort_list; | |
361 | struct list_head pr_reg_aptpl_list; | |
362 | struct list_head pr_reg_atp_list; | |
363 | struct list_head pr_reg_atp_mem_list; | |
e0a53e70 | 364 | }; |
c66ac9db | 365 | |
e3d6f909 | 366 | struct t10_reservation { |
c66ac9db NB |
367 | /* Reservation effects all target ports */ |
368 | int pr_all_tg_pt; | |
369 | /* Activate Persistence across Target Power Loss enabled | |
370 | * for SCSI device */ | |
371 | int pr_aptpl_active; | |
c66ac9db | 372 | #define PR_APTPL_BUF_LEN 8192 |
c66ac9db | 373 | u32 pr_generation; |
c66ac9db NB |
374 | spinlock_t registration_lock; |
375 | spinlock_t aptpl_reg_lock; | |
376 | /* | |
377 | * This will always be set by one individual I_T Nexus. | |
378 | * However with all_tg_pt=1, other I_T Nexus from the | |
379 | * same initiator can access PR reg/res info on a different | |
380 | * target port. | |
381 | * | |
382 | * There is also the 'All Registrants' case, where there is | |
383 | * a single *pr_res_holder of the reservation, but all | |
384 | * registrations are considered reservation holders. | |
385 | */ | |
386 | struct se_node_acl *pr_res_holder; | |
387 | struct list_head registration_list; | |
388 | struct list_head aptpl_reg_list; | |
e0a53e70 | 389 | }; |
c66ac9db | 390 | |
c8e31f26 AG |
391 | struct se_tmr_req { |
392 | /* Task Management function to be performed */ | |
393 | u8 function; | |
394 | /* Task Management response to send */ | |
395 | u8 response; | |
396 | int call_transport; | |
397 | /* Reference to ITT that Task Mgmt should be performed */ | |
398 | u32 ref_task_tag; | |
c8e31f26 AG |
399 | void *fabric_tmr_ptr; |
400 | struct se_cmd *task_cmd; | |
c8e31f26 AG |
401 | struct se_device *tmr_dev; |
402 | struct se_lun *tmr_lun; | |
403 | struct list_head tmr_list; | |
404 | }; | |
405 | ||
c66ac9db NB |
406 | struct se_cmd { |
407 | /* SAM response code being sent to initiator */ | |
408 | u8 scsi_status; | |
409 | u8 scsi_asc; | |
410 | u8 scsi_ascq; | |
c66ac9db NB |
411 | u16 scsi_sense_length; |
412 | /* Delay for ALUA Active/NonOptimized state access in milliseconds */ | |
413 | int alua_nonop_delay; | |
414 | /* See include/linux/dma-mapping.h */ | |
415 | enum dma_data_direction data_direction; | |
416 | /* For SAM Task Attribute */ | |
417 | int sam_task_attr; | |
418 | /* Transport protocol dependent state, see transport_state_table */ | |
419 | enum transport_state_table t_state; | |
5f655e8d | 420 | unsigned cmd_wait_set:1; |
b0d79946 | 421 | unsigned unknown_data_length:1; |
c66ac9db NB |
422 | /* See se_cmd_flags_table */ |
423 | u32 se_cmd_flags; | |
424 | u32 se_ordered_id; | |
425 | /* Total size in bytes associated with command */ | |
426 | u32 data_length; | |
c66ac9db NB |
427 | u32 residual_count; |
428 | u32 orig_fe_lun; | |
429 | /* Persistent Reservation key */ | |
430 | u64 pr_res_key; | |
c66ac9db NB |
431 | /* Used for sense data */ |
432 | void *sense_buffer; | |
5951146d | 433 | struct list_head se_delayed_node; |
5951146d | 434 | struct list_head se_lun_node; |
07bde79a | 435 | struct list_head se_qf_node; |
c66ac9db NB |
436 | struct se_device *se_dev; |
437 | struct se_dev_entry *se_deve; | |
c66ac9db NB |
438 | struct se_lun *se_lun; |
439 | /* Only used for internal passthrough and legacy TCM fabric modules */ | |
440 | struct se_session *se_sess; | |
441 | struct se_tmr_req *se_tmr_req; | |
a17f091d NB |
442 | struct list_head se_cmd_list; |
443 | struct completion cmd_wait_comp; | |
7481deb4 | 444 | struct kref cmd_kref; |
c66ac9db | 445 | struct target_core_fabric_ops *se_tfo; |
de103c93 | 446 | sense_reason_t (*execute_cmd)(struct se_cmd *); |
c66ac9db | 447 | void (*transport_complete_callback)(struct se_cmd *); |
07bde79a | 448 | |
a1d8b49a AG |
449 | unsigned char *t_task_cdb; |
450 | unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; | |
451 | unsigned long long t_task_lba; | |
7d680f3b CH |
452 | unsigned int transport_state; |
453 | #define CMD_T_ABORTED (1 << 0) | |
454 | #define CMD_T_ACTIVE (1 << 1) | |
455 | #define CMD_T_COMPLETE (1 << 2) | |
7d680f3b CH |
456 | #define CMD_T_SENT (1 << 4) |
457 | #define CMD_T_STOP (1 << 5) | |
458 | #define CMD_T_FAILED (1 << 6) | |
459 | #define CMD_T_LUN_STOP (1 << 7) | |
460 | #define CMD_T_LUN_FE_STOP (1 << 8) | |
461 | #define CMD_T_DEV_ACTIVE (1 << 9) | |
cf572a96 CH |
462 | #define CMD_T_REQUEST_STOP (1 << 10) |
463 | #define CMD_T_BUSY (1 << 11) | |
a1d8b49a AG |
464 | spinlock_t t_state_lock; |
465 | struct completion t_transport_stop_comp; | |
466 | struct completion transport_lun_fe_stop_comp; | |
467 | struct completion transport_lun_stop_comp; | |
05d1c7c0 | 468 | |
35e0e757 CH |
469 | struct work_struct work; |
470 | ||
ec98f782 AG |
471 | struct scatterlist *t_data_sg; |
472 | unsigned int t_data_nents; | |
4949314c | 473 | void *t_data_vmap; |
ec98f782 AG |
474 | struct scatterlist *t_bidi_data_sg; |
475 | unsigned int t_bidi_data_nents; | |
476 | ||
cf572a96 CH |
477 | struct list_head state_list; |
478 | bool state_active; | |
479 | ||
480 | /* old task stop completion, consider merging with some of the above */ | |
481 | struct completion task_stop_comp; | |
482 | ||
5787cacd CH |
483 | /* backend private data */ |
484 | void *priv; | |
e0a53e70 | 485 | }; |
c66ac9db | 486 | |
c66ac9db NB |
487 | struct se_ua { |
488 | u8 ua_asc; | |
489 | u8 ua_ascq; | |
490 | struct se_node_acl *ua_nacl; | |
491 | struct list_head ua_dev_list; | |
492 | struct list_head ua_nacl_list; | |
e0a53e70 | 493 | }; |
c66ac9db NB |
494 | |
495 | struct se_node_acl { | |
496 | char initiatorname[TRANSPORT_IQN_LEN]; | |
497 | /* Used to signal demo mode created ACL, disabled by default */ | |
5dd7ed2e | 498 | bool dynamic_node_acl; |
337c0607 | 499 | bool acl_stop:1; |
c66ac9db NB |
500 | u32 queue_depth; |
501 | u32 acl_index; | |
79e62fc3 AG |
502 | #define MAX_ACL_TAG_SIZE 64 |
503 | char acl_tag[MAX_ACL_TAG_SIZE]; | |
c66ac9db NB |
504 | u64 num_cmds; |
505 | u64 read_bytes; | |
506 | u64 write_bytes; | |
507 | spinlock_t stats_lock; | |
508 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ | |
509 | atomic_t acl_pr_ref_count; | |
f2083241 | 510 | struct se_dev_entry **device_list; |
c66ac9db NB |
511 | struct se_session *nacl_sess; |
512 | struct se_portal_group *se_tpg; | |
513 | spinlock_t device_list_lock; | |
514 | spinlock_t nacl_sess_lock; | |
515 | struct config_group acl_group; | |
516 | struct config_group acl_attrib_group; | |
517 | struct config_group acl_auth_group; | |
518 | struct config_group acl_param_group; | |
12d23384 NB |
519 | struct config_group acl_fabric_stat_group; |
520 | struct config_group *acl_default_groups[5]; | |
c66ac9db NB |
521 | struct list_head acl_list; |
522 | struct list_head acl_sess_list; | |
01468346 | 523 | struct completion acl_free_comp; |
afb999ff | 524 | struct kref acl_kref; |
e0a53e70 | 525 | }; |
c66ac9db NB |
526 | |
527 | struct se_session { | |
5f655e8d | 528 | unsigned sess_tearing_down:1; |
c66ac9db NB |
529 | u64 sess_bin_isid; |
530 | struct se_node_acl *se_node_acl; | |
531 | struct se_portal_group *se_tpg; | |
532 | void *fabric_sess_ptr; | |
533 | struct list_head sess_list; | |
534 | struct list_head sess_acl_list; | |
a17f091d | 535 | struct list_head sess_cmd_list; |
9b31a328 | 536 | struct list_head sess_wait_list; |
a17f091d | 537 | spinlock_t sess_cmd_lock; |
41ac82b6 | 538 | struct kref sess_kref; |
e0a53e70 | 539 | }; |
c66ac9db | 540 | |
c66ac9db NB |
541 | struct se_device; |
542 | struct se_transform_info; | |
543 | struct scatterlist; | |
544 | ||
12d23384 NB |
545 | struct se_ml_stat_grps { |
546 | struct config_group stat_group; | |
547 | struct config_group scsi_auth_intr_group; | |
548 | struct config_group scsi_att_intr_port_group; | |
549 | }; | |
550 | ||
c66ac9db NB |
551 | struct se_lun_acl { |
552 | char initiatorname[TRANSPORT_IQN_LEN]; | |
553 | u32 mapped_lun; | |
554 | struct se_node_acl *se_lun_nacl; | |
555 | struct se_lun *se_lun; | |
556 | struct list_head lacl_list; | |
557 | struct config_group se_lun_group; | |
12d23384 | 558 | struct se_ml_stat_grps ml_stat_grps; |
e0a53e70 | 559 | }; |
c66ac9db NB |
560 | |
561 | struct se_dev_entry { | |
5dd7ed2e | 562 | bool def_pr_registered; |
c66ac9db NB |
563 | /* See transport_lunflags_table */ |
564 | u32 lun_flags; | |
c66ac9db | 565 | u32 mapped_lun; |
c66ac9db | 566 | u32 total_cmds; |
c66ac9db NB |
567 | u64 pr_res_key; |
568 | u64 creation_time; | |
569 | u32 attach_count; | |
570 | u64 read_bytes; | |
571 | u64 write_bytes; | |
572 | atomic_t ua_count; | |
573 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ | |
574 | atomic_t pr_ref_count; | |
575 | struct se_lun_acl *se_lun_acl; | |
576 | spinlock_t ua_lock; | |
577 | struct se_lun *se_lun; | |
578 | struct list_head alua_port_list; | |
579 | struct list_head ua_list; | |
e0a53e70 | 580 | }; |
c66ac9db | 581 | |
c66ac9db | 582 | struct se_dev_attrib { |
adfa9570 | 583 | int emulate_model_alias; |
c66ac9db NB |
584 | int emulate_dpo; |
585 | int emulate_fua_write; | |
586 | int emulate_fua_read; | |
587 | int emulate_write_cache; | |
588 | int emulate_ua_intlck_ctrl; | |
589 | int emulate_tas; | |
590 | int emulate_tpu; | |
591 | int emulate_tpws; | |
c66ac9db | 592 | int enforce_pr_isids; |
e22a7f07 | 593 | int is_nonrot; |
5de619a3 | 594 | int emulate_rest_reord; |
c66ac9db NB |
595 | u32 hw_block_size; |
596 | u32 block_size; | |
597 | u32 hw_max_sectors; | |
015487b8 | 598 | u32 fabric_max_sectors; |
c66ac9db NB |
599 | u32 optimal_sectors; |
600 | u32 hw_queue_depth; | |
601 | u32 queue_depth; | |
c66ac9db NB |
602 | u32 max_unmap_lba_count; |
603 | u32 max_unmap_block_desc_count; | |
604 | u32 unmap_granularity; | |
605 | u32 unmap_granularity_alignment; | |
773cbaf7 | 606 | u32 max_write_same_len; |
0fd97ccf | 607 | struct se_device *da_dev; |
c66ac9db | 608 | struct config_group da_group; |
e0a53e70 | 609 | }; |
c66ac9db | 610 | |
12d23384 NB |
611 | struct se_dev_stat_grps { |
612 | struct config_group stat_group; | |
613 | struct config_group scsi_dev_group; | |
614 | struct config_group scsi_tgt_dev_group; | |
615 | struct config_group scsi_lu_group; | |
616 | }; | |
617 | ||
c66ac9db | 618 | struct se_device { |
0ff87549 NB |
619 | #define SE_DEV_LINK_MAGIC 0xfeeddeef |
620 | u32 dev_link_magic; | |
c66ac9db NB |
621 | /* RELATIVE TARGET PORT IDENTIFER Counter */ |
622 | u16 dev_rpti_counter; | |
623 | /* Used for SAM Task Attribute ordering */ | |
624 | u32 dev_cur_ordered_id; | |
625 | u32 dev_flags; | |
0fd97ccf CH |
626 | #define DF_CONFIGURED 0x00000001 |
627 | #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 | |
628 | #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 | |
629 | #define DF_USING_UDEV_PATH 0x00000008 | |
630 | #define DF_USING_ALIAS 0x00000010 | |
c66ac9db | 631 | u32 dev_port_count; |
c66ac9db NB |
632 | /* Physical device queue depth */ |
633 | u32 queue_depth; | |
634 | /* Used for SPC-2 reservations enforce of ISIDs */ | |
635 | u64 dev_res_bin_isid; | |
c66ac9db | 636 | /* Pointer to transport specific device structure */ |
c66ac9db NB |
637 | u32 dev_index; |
638 | u64 creation_time; | |
639 | u32 num_resets; | |
640 | u64 num_cmds; | |
641 | u64 read_bytes; | |
642 | u64 write_bytes; | |
643 | spinlock_t stats_lock; | |
644 | /* Active commands on this virtual SE device */ | |
c66ac9db | 645 | atomic_t simple_cmds; |
c66ac9db | 646 | atomic_t dev_ordered_id; |
c66ac9db | 647 | atomic_t dev_ordered_sync; |
07bde79a | 648 | atomic_t dev_qf_count; |
0fd97ccf | 649 | int export_count; |
c66ac9db | 650 | spinlock_t delayed_cmd_lock; |
c66ac9db | 651 | spinlock_t execute_task_lock; |
c66ac9db | 652 | spinlock_t dev_reservation_lock; |
0fd97ccf CH |
653 | unsigned int dev_reservation_flags; |
654 | #define DRF_SPC2_RESERVATIONS 0x00000001 | |
655 | #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 | |
c66ac9db NB |
656 | spinlock_t se_port_lock; |
657 | spinlock_t se_tmr_lock; | |
07bde79a | 658 | spinlock_t qf_cmd_lock; |
c66ac9db NB |
659 | /* Used for legacy SPC-2 reservationsa */ |
660 | struct se_node_acl *dev_reserved_node_acl; | |
661 | /* Used for ALUA Logical Unit Group membership */ | |
662 | struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; | |
663 | /* Used for SPC-3 Persistent Reservations */ | |
664 | struct t10_pr_registration *dev_pr_res_holder; | |
665 | struct list_head dev_sep_list; | |
666 | struct list_head dev_tmr_list; | |
af877292 | 667 | struct workqueue_struct *tmr_wq; |
07bde79a | 668 | struct work_struct qf_work_queue; |
c66ac9db | 669 | struct list_head delayed_cmd_list; |
cf572a96 | 670 | struct list_head state_list; |
07bde79a | 671 | struct list_head qf_cmd_list; |
c66ac9db NB |
672 | /* Pointer to associated SE HBA */ |
673 | struct se_hba *se_hba; | |
0fd97ccf CH |
674 | /* T10 Inquiry and VPD WWN Information */ |
675 | struct t10_wwn t10_wwn; | |
676 | /* T10 Asymmetric Logical Unit Assignment for Target Ports */ | |
677 | struct t10_alua t10_alua; | |
678 | /* T10 SPC-2 + SPC-3 Reservations */ | |
679 | struct t10_reservation t10_pr; | |
680 | struct se_dev_attrib dev_attrib; | |
681 | struct config_group dev_group; | |
682 | struct config_group dev_pr_group; | |
683 | struct se_dev_stat_grps dev_stat_grps; | |
684 | #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ | |
685 | unsigned char dev_alias[SE_DEV_ALIAS_LEN]; | |
686 | #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ | |
687 | unsigned char udev_path[SE_UDEV_PATH_LEN]; | |
c66ac9db NB |
688 | /* Pointer to template of function pointers for transport */ |
689 | struct se_subsystem_api *transport; | |
690 | /* Linked list for struct se_hba struct se_device list */ | |
691 | struct list_head dev_list; | |
e0a53e70 | 692 | }; |
c66ac9db | 693 | |
c66ac9db NB |
694 | struct se_hba { |
695 | u16 hba_tpgt; | |
696 | u32 hba_id; | |
697 | /* See hba_flags_table */ | |
698 | u32 hba_flags; | |
699 | /* Virtual iSCSI devices attached. */ | |
700 | u32 dev_count; | |
701 | u32 hba_index; | |
c66ac9db NB |
702 | /* Pointer to transport specific host structure. */ |
703 | void *hba_ptr; | |
e3d6f909 | 704 | struct list_head hba_node; |
c66ac9db | 705 | spinlock_t device_lock; |
c66ac9db NB |
706 | struct config_group hba_group; |
707 | struct mutex hba_access_mutex; | |
708 | struct se_subsystem_api *transport; | |
e0a53e70 | 709 | }; |
c66ac9db | 710 | |
12d23384 NB |
711 | struct se_port_stat_grps { |
712 | struct config_group stat_group; | |
713 | struct config_group scsi_port_group; | |
714 | struct config_group scsi_tgt_port_group; | |
715 | struct config_group scsi_transport_group; | |
716 | }; | |
717 | ||
c66ac9db | 718 | struct se_lun { |
0ff87549 NB |
719 | #define SE_LUN_LINK_MAGIC 0xffff7771 |
720 | u32 lun_link_magic; | |
c66ac9db NB |
721 | /* See transport_lun_status_table */ |
722 | enum transport_lun_status_table lun_status; | |
723 | u32 lun_access; | |
724 | u32 lun_flags; | |
725 | u32 unpacked_lun; | |
726 | atomic_t lun_acl_count; | |
727 | spinlock_t lun_acl_lock; | |
728 | spinlock_t lun_cmd_lock; | |
729 | spinlock_t lun_sep_lock; | |
730 | struct completion lun_shutdown_comp; | |
731 | struct list_head lun_cmd_list; | |
732 | struct list_head lun_acl_list; | |
733 | struct se_device *lun_se_dev; | |
12d23384 | 734 | struct se_port *lun_sep; |
c66ac9db | 735 | struct config_group lun_group; |
12d23384 | 736 | struct se_port_stat_grps port_stat_grps; |
e0a53e70 | 737 | }; |
c66ac9db | 738 | |
e89d15ee NB |
739 | struct scsi_port_stats { |
740 | u64 cmd_pdus; | |
741 | u64 tx_data_octets; | |
742 | u64 rx_data_octets; | |
e0a53e70 | 743 | }; |
e89d15ee | 744 | |
c66ac9db NB |
745 | struct se_port { |
746 | /* RELATIVE TARGET PORT IDENTIFER */ | |
747 | u16 sep_rtpi; | |
748 | int sep_tg_pt_secondary_stat; | |
749 | int sep_tg_pt_secondary_write_md; | |
750 | u32 sep_index; | |
751 | struct scsi_port_stats sep_stats; | |
752 | /* Used for ALUA Target Port Groups membership */ | |
c66ac9db NB |
753 | atomic_t sep_tg_pt_secondary_offline; |
754 | /* Used for PR ALL_TG_PT=1 */ | |
755 | atomic_t sep_tg_pt_ref_cnt; | |
756 | spinlock_t sep_alua_lock; | |
757 | struct mutex sep_tg_pt_md_mutex; | |
758 | struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; | |
759 | struct se_lun *sep_lun; | |
760 | struct se_portal_group *sep_tpg; | |
761 | struct list_head sep_alua_list; | |
762 | struct list_head sep_list; | |
e0a53e70 | 763 | }; |
c66ac9db NB |
764 | |
765 | struct se_tpg_np { | |
1f6fe7cb | 766 | struct se_portal_group *tpg_np_parent; |
c66ac9db | 767 | struct config_group tpg_np_group; |
e0a53e70 | 768 | }; |
c66ac9db NB |
769 | |
770 | struct se_portal_group { | |
771 | /* Type of target portal group, see transport_tpg_type_table */ | |
772 | enum transport_tpg_type_table se_tpg_type; | |
773 | /* Number of ACLed Initiator Nodes for this TPG */ | |
774 | u32 num_node_acls; | |
775 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ | |
776 | atomic_t tpg_pr_ref_count; | |
777 | /* Spinlock for adding/removing ACLed Nodes */ | |
778 | spinlock_t acl_node_lock; | |
779 | /* Spinlock for adding/removing sessions */ | |
780 | spinlock_t session_lock; | |
781 | spinlock_t tpg_lun_lock; | |
782 | /* Pointer to $FABRIC_MOD portal group */ | |
783 | void *se_tpg_fabric_ptr; | |
e3d6f909 | 784 | struct list_head se_tpg_node; |
c66ac9db NB |
785 | /* linked list for initiator ACL list */ |
786 | struct list_head acl_node_list; | |
4a5a75f3 | 787 | struct se_lun **tpg_lun_list; |
c66ac9db | 788 | struct se_lun tpg_virt_lun0; |
25985edc | 789 | /* List of TCM sessions associated wth this TPG */ |
c66ac9db NB |
790 | struct list_head tpg_sess_list; |
791 | /* Pointer to $FABRIC_MOD dependent code */ | |
792 | struct target_core_fabric_ops *se_tpg_tfo; | |
793 | struct se_wwn *se_tpg_wwn; | |
794 | struct config_group tpg_group; | |
e4b512e7 | 795 | struct config_group *tpg_default_groups[7]; |
c66ac9db NB |
796 | struct config_group tpg_lun_group; |
797 | struct config_group tpg_np_group; | |
798 | struct config_group tpg_acl_group; | |
799 | struct config_group tpg_attrib_group; | |
e4b512e7 | 800 | struct config_group tpg_auth_group; |
c66ac9db | 801 | struct config_group tpg_param_group; |
e0a53e70 | 802 | }; |
c66ac9db | 803 | |
c66ac9db NB |
804 | struct se_wwn { |
805 | struct target_fabric_configfs *wwn_tf; | |
806 | struct config_group wwn_group; | |
12d23384 NB |
807 | struct config_group *wwn_default_groups[2]; |
808 | struct config_group fabric_stat_group; | |
e0a53e70 | 809 | }; |
c66ac9db | 810 | |
c66ac9db | 811 | #endif /* TARGET_CORE_BASE_H */ |