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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 | |
fa495159 | 12 | #define TARGET_CORE_MOD_VERSION "v4.1.0-rc1-ml" |
c66ac9db | 13 | |
c66ac9db | 14 | /* Maximum Number of LUNs per Target Portal Group */ |
d0229ae3 | 15 | /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */ |
c66ac9db NB |
16 | #define TRANSPORT_MAX_LUNS_PER_TPG 256 |
17 | /* | |
18 | * By default we use 32-byte CDBs in TCM Core and subsystem plugin code. | |
19 | * | |
20 | * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and | |
21 | * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use | |
22 | * 16-byte CDBs by default and require an extra allocation for | |
25985edc | 23 | * 32-byte CDBs to because of legacy issues. |
c66ac9db NB |
24 | * |
25 | * Within TCM Core there are no such legacy limitiations, so we go ahead | |
26 | * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size() | |
27 | * within all TCM Core and subsystem plugin code. | |
28 | */ | |
29 | #define TCM_MAX_COMMAND_SIZE 32 | |
30 | /* | |
31 | * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently | |
32 | * defined 96, but the real limit is 252 (or 260 including the header) | |
33 | */ | |
34 | #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE | |
35 | /* Used by transport_send_check_condition_and_sense() */ | |
36 | #define SPC_SENSE_KEY_OFFSET 2 | |
37 | #define SPC_ASC_KEY_OFFSET 12 | |
38 | #define SPC_ASCQ_KEY_OFFSET 13 | |
39 | #define TRANSPORT_IQN_LEN 224 | |
40 | /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */ | |
41 | #define LU_GROUP_NAME_BUF 256 | |
42 | /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */ | |
43 | #define TG_PT_GROUP_NAME_BUF 256 | |
44 | /* Used to parse VPD into struct t10_vpd */ | |
45 | #define VPD_TMP_BUF_SIZE 128 | |
46 | /* Used by transport_generic_cmd_sequencer() */ | |
47 | #define READ_BLOCK_LEN 6 | |
48 | #define READ_CAP_LEN 8 | |
49 | #define READ_POSITION_LEN 20 | |
50 | #define INQUIRY_LEN 36 | |
51 | /* Used by transport_get_inquiry_vpd_serial() */ | |
52 | #define INQUIRY_VPD_SERIAL_LEN 254 | |
53 | /* Used by transport_get_inquiry_vpd_device_ident() */ | |
54 | #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254 | |
55 | ||
56 | /* struct se_hba->hba_flags */ | |
57 | enum hba_flags_table { | |
58 | HBA_FLAGS_INTERNAL_USE = 0x01, | |
59 | HBA_FLAGS_PSCSI_MODE = 0x02, | |
60 | }; | |
61 | ||
62 | /* struct se_lun->lun_status */ | |
63 | enum transport_lun_status_table { | |
64 | TRANSPORT_LUN_STATUS_FREE = 0, | |
65 | TRANSPORT_LUN_STATUS_ACTIVE = 1, | |
66 | }; | |
67 | ||
68 | /* struct se_portal_group->se_tpg_type */ | |
69 | enum transport_tpg_type_table { | |
70 | TRANSPORT_TPG_TYPE_NORMAL = 0, | |
71 | TRANSPORT_TPG_TYPE_DISCOVERY = 1, | |
72 | }; | |
73 | ||
74 | /* Used for generate timer flags */ | |
6c76bf95 CH |
75 | enum se_task_flags { |
76 | TF_ACTIVE = (1 << 0), | |
77 | TF_SENT = (1 << 1), | |
78 | TF_TIMEOUT = (1 << 2), | |
79 | TF_REQUEST_STOP = (1 << 3), | |
c66ac9db NB |
80 | }; |
81 | ||
82 | /* Special transport agnostic struct se_cmd->t_states */ | |
83 | enum transport_state_table { | |
84 | TRANSPORT_NO_STATE = 0, | |
85 | TRANSPORT_NEW_CMD = 1, | |
c66ac9db NB |
86 | TRANSPORT_WRITE_PENDING = 3, |
87 | TRANSPORT_PROCESS_WRITE = 4, | |
88 | TRANSPORT_PROCESSING = 5, | |
89 | TRANSPORT_COMPLETE_OK = 6, | |
90 | TRANSPORT_COMPLETE_FAILURE = 7, | |
91 | TRANSPORT_COMPLETE_TIMEOUT = 8, | |
92 | TRANSPORT_PROCESS_TMR = 9, | |
c66ac9db | 93 | TRANSPORT_ISTATE_PROCESSING = 11, |
c66ac9db | 94 | TRANSPORT_NEW_CMD_MAP = 16, |
f4366772 | 95 | TRANSPORT_FREE_CMD_INTR = 17, |
07bde79a | 96 | TRANSPORT_COMPLETE_QF_WP = 18, |
e057f533 | 97 | TRANSPORT_COMPLETE_QF_OK = 19, |
c66ac9db NB |
98 | }; |
99 | ||
100 | /* Used for struct se_cmd->se_cmd_flags */ | |
101 | enum se_cmd_flags_table { | |
102 | SCF_SUPPORTED_SAM_OPCODE = 0x00000001, | |
103 | SCF_TRANSPORT_TASK_SENSE = 0x00000002, | |
104 | SCF_EMULATED_TASK_SENSE = 0x00000004, | |
105 | SCF_SCSI_DATA_SG_IO_CDB = 0x00000008, | |
106 | SCF_SCSI_CONTROL_SG_IO_CDB = 0x00000010, | |
c66ac9db NB |
107 | SCF_SCSI_NON_DATA_CDB = 0x00000040, |
108 | SCF_SCSI_CDB_EXCEPTION = 0x00000080, | |
109 | SCF_SCSI_RESERVATION_CONFLICT = 0x00000100, | |
c66ac9db NB |
110 | SCF_SE_CMD_FAILED = 0x00000400, |
111 | SCF_SE_LUN_CMD = 0x00000800, | |
112 | SCF_SE_ALLOW_EOO = 0x00001000, | |
c66ac9db NB |
113 | SCF_SENT_CHECK_CONDITION = 0x00004000, |
114 | SCF_OVERFLOW_BIT = 0x00008000, | |
115 | SCF_UNDERFLOW_BIT = 0x00010000, | |
116 | SCF_SENT_DELAYED_TAS = 0x00020000, | |
117 | SCF_ALUA_NON_OPTIMIZED = 0x00040000, | |
118 | SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000, | |
5951146d | 119 | SCF_UNUSED = 0x00100000, |
c66ac9db | 120 | SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000, |
c66ac9db | 121 | SCF_EMULATE_CDB_ASYNC = 0x01000000, |
c66ac9db NB |
122 | }; |
123 | ||
124 | /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ | |
125 | enum transport_lunflags_table { | |
126 | TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, | |
127 | TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, | |
128 | TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, | |
129 | TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, | |
130 | }; | |
131 | ||
132 | /* struct se_device->dev_status */ | |
133 | enum transport_device_status_table { | |
134 | TRANSPORT_DEVICE_ACTIVATED = 0x01, | |
135 | TRANSPORT_DEVICE_DEACTIVATED = 0x02, | |
136 | TRANSPORT_DEVICE_QUEUE_FULL = 0x04, | |
137 | TRANSPORT_DEVICE_SHUTDOWN = 0x08, | |
138 | TRANSPORT_DEVICE_OFFLINE_ACTIVATED = 0x10, | |
139 | TRANSPORT_DEVICE_OFFLINE_DEACTIVATED = 0x20, | |
140 | }; | |
141 | ||
142 | /* | |
143 | * Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason | |
144 | * to signal which ASC/ASCQ sense payload should be built. | |
145 | */ | |
146 | enum tcm_sense_reason_table { | |
147 | TCM_NON_EXISTENT_LUN = 0x01, | |
148 | TCM_UNSUPPORTED_SCSI_OPCODE = 0x02, | |
149 | TCM_INCORRECT_AMOUNT_OF_DATA = 0x03, | |
150 | TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04, | |
151 | TCM_SERVICE_CRC_ERROR = 0x05, | |
152 | TCM_SNACK_REJECTED = 0x06, | |
153 | TCM_SECTOR_COUNT_TOO_MANY = 0x07, | |
154 | TCM_INVALID_CDB_FIELD = 0x08, | |
155 | TCM_INVALID_PARAMETER_LIST = 0x09, | |
156 | TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a, | |
157 | TCM_UNKNOWN_MODE_PAGE = 0x0b, | |
158 | TCM_WRITE_PROTECTED = 0x0c, | |
159 | TCM_CHECK_CONDITION_ABORT_CMD = 0x0d, | |
160 | TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e, | |
161 | TCM_CHECK_CONDITION_NOT_READY = 0x0f, | |
162 | }; | |
163 | ||
164 | struct se_obj { | |
165 | atomic_t obj_access_count; | |
166 | } ____cacheline_aligned; | |
167 | ||
168 | /* | |
169 | * Used by TCM Core internally to signal if ALUA emulation is enabled or | |
170 | * disabled, or running in with TCM/pSCSI passthrough mode | |
171 | */ | |
172 | typedef enum { | |
173 | SPC_ALUA_PASSTHROUGH, | |
174 | SPC2_ALUA_DISABLED, | |
175 | SPC3_ALUA_EMULATED | |
176 | } t10_alua_index_t; | |
177 | ||
178 | /* | |
179 | * Used by TCM Core internally to signal if SAM Task Attribute emulation | |
180 | * is enabled or disabled, or running in with TCM/pSCSI passthrough mode | |
181 | */ | |
182 | typedef enum { | |
183 | SAM_TASK_ATTR_PASSTHROUGH, | |
184 | SAM_TASK_ATTR_UNTAGGED, | |
185 | SAM_TASK_ATTR_EMULATED | |
186 | } t10_task_attr_index_t; | |
187 | ||
e89d15ee NB |
188 | /* |
189 | * Used for target SCSI statistics | |
190 | */ | |
191 | typedef enum { | |
192 | SCSI_INST_INDEX, | |
193 | SCSI_DEVICE_INDEX, | |
194 | SCSI_AUTH_INTR_INDEX, | |
195 | SCSI_INDEX_TYPE_MAX | |
196 | } scsi_index_t; | |
197 | ||
c66ac9db NB |
198 | struct se_cmd; |
199 | ||
200 | struct t10_alua { | |
201 | t10_alua_index_t alua_type; | |
202 | /* ALUA Target Port Group ID */ | |
203 | u16 alua_tg_pt_gps_counter; | |
204 | u32 alua_tg_pt_gps_count; | |
205 | spinlock_t tg_pt_gps_lock; | |
206 | struct se_subsystem_dev *t10_sub_dev; | |
207 | /* Used for default ALUA Target Port Group */ | |
208 | struct t10_alua_tg_pt_gp *default_tg_pt_gp; | |
209 | /* Used for default ALUA Target Port Group ConfigFS group */ | |
210 | struct config_group alua_tg_pt_gps_group; | |
211 | int (*alua_state_check)(struct se_cmd *, unsigned char *, u8 *); | |
212 | struct list_head tg_pt_gps_list; | |
213 | } ____cacheline_aligned; | |
214 | ||
215 | struct t10_alua_lu_gp { | |
216 | u16 lu_gp_id; | |
217 | int lu_gp_valid_id; | |
218 | u32 lu_gp_members; | |
219 | atomic_t lu_gp_shutdown; | |
220 | atomic_t lu_gp_ref_cnt; | |
221 | spinlock_t lu_gp_lock; | |
222 | struct config_group lu_gp_group; | |
e3d6f909 | 223 | struct list_head lu_gp_node; |
c66ac9db NB |
224 | struct list_head lu_gp_mem_list; |
225 | } ____cacheline_aligned; | |
226 | ||
227 | struct t10_alua_lu_gp_member { | |
5dd7ed2e | 228 | bool lu_gp_assoc; |
c66ac9db NB |
229 | atomic_t lu_gp_mem_ref_cnt; |
230 | spinlock_t lu_gp_mem_lock; | |
231 | struct t10_alua_lu_gp *lu_gp; | |
232 | struct se_device *lu_gp_mem_dev; | |
233 | struct list_head lu_gp_mem_list; | |
234 | } ____cacheline_aligned; | |
235 | ||
236 | struct t10_alua_tg_pt_gp { | |
237 | u16 tg_pt_gp_id; | |
238 | int tg_pt_gp_valid_id; | |
239 | int tg_pt_gp_alua_access_status; | |
240 | int tg_pt_gp_alua_access_type; | |
241 | int tg_pt_gp_nonop_delay_msecs; | |
242 | int tg_pt_gp_trans_delay_msecs; | |
243 | int tg_pt_gp_pref; | |
244 | int tg_pt_gp_write_metadata; | |
245 | /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ | |
246 | #define ALUA_MD_BUF_LEN 1024 | |
247 | u32 tg_pt_gp_md_buf_len; | |
248 | u32 tg_pt_gp_members; | |
249 | atomic_t tg_pt_gp_alua_access_state; | |
250 | atomic_t tg_pt_gp_ref_cnt; | |
251 | spinlock_t tg_pt_gp_lock; | |
252 | struct mutex tg_pt_gp_md_mutex; | |
253 | struct se_subsystem_dev *tg_pt_gp_su_dev; | |
254 | struct config_group tg_pt_gp_group; | |
255 | struct list_head tg_pt_gp_list; | |
256 | struct list_head tg_pt_gp_mem_list; | |
257 | } ____cacheline_aligned; | |
258 | ||
259 | struct t10_alua_tg_pt_gp_member { | |
5dd7ed2e | 260 | bool tg_pt_gp_assoc; |
c66ac9db NB |
261 | atomic_t tg_pt_gp_mem_ref_cnt; |
262 | spinlock_t tg_pt_gp_mem_lock; | |
263 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
264 | struct se_port *tg_pt; | |
265 | struct list_head tg_pt_gp_mem_list; | |
266 | } ____cacheline_aligned; | |
267 | ||
268 | struct t10_vpd { | |
269 | unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; | |
270 | int protocol_identifier_set; | |
271 | u32 protocol_identifier; | |
272 | u32 device_identifier_code_set; | |
273 | u32 association; | |
274 | u32 device_identifier_type; | |
275 | struct list_head vpd_list; | |
276 | } ____cacheline_aligned; | |
277 | ||
278 | struct t10_wwn { | |
e3d6f909 AG |
279 | char vendor[8]; |
280 | char model[16]; | |
281 | char revision[4]; | |
282 | char unit_serial[INQUIRY_VPD_SERIAL_LEN]; | |
c66ac9db NB |
283 | spinlock_t t10_vpd_lock; |
284 | struct se_subsystem_dev *t10_sub_dev; | |
285 | struct config_group t10_wwn_group; | |
286 | struct list_head t10_vpd_list; | |
287 | } ____cacheline_aligned; | |
288 | ||
289 | ||
290 | /* | |
25985edc | 291 | * Used by TCM Core internally to signal if >= SPC-3 persistent reservations |
c66ac9db NB |
292 | * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough |
293 | * mode | |
294 | */ | |
295 | typedef enum { | |
296 | SPC_PASSTHROUGH, | |
297 | SPC2_RESERVATIONS, | |
298 | SPC3_PERSISTENT_RESERVATIONS | |
299 | } t10_reservations_index_t; | |
300 | ||
301 | struct t10_pr_registration { | |
302 | /* Used for fabrics that contain WWN+ISID */ | |
303 | #define PR_REG_ISID_LEN 16 | |
304 | /* PR_REG_ISID_LEN + ',i,0x' */ | |
305 | #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) | |
306 | char pr_reg_isid[PR_REG_ISID_LEN]; | |
307 | /* Used during APTPL metadata reading */ | |
308 | #define PR_APTPL_MAX_IPORT_LEN 256 | |
309 | unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; | |
310 | /* Used during APTPL metadata reading */ | |
311 | #define PR_APTPL_MAX_TPORT_LEN 256 | |
312 | unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; | |
313 | /* For writing out live meta data */ | |
314 | unsigned char *pr_aptpl_buf; | |
315 | u16 pr_aptpl_rpti; | |
316 | u16 pr_reg_tpgt; | |
317 | /* Reservation effects all target ports */ | |
318 | int pr_reg_all_tg_pt; | |
319 | /* Activate Persistence across Target Power Loss */ | |
320 | int pr_reg_aptpl; | |
321 | int pr_res_holder; | |
322 | int pr_res_type; | |
323 | int pr_res_scope; | |
324 | /* Used for fabric initiator WWPNs using a ISID */ | |
5dd7ed2e | 325 | bool isid_present_at_reg; |
c66ac9db NB |
326 | u32 pr_res_mapped_lun; |
327 | u32 pr_aptpl_target_lun; | |
328 | u32 pr_res_generation; | |
329 | u64 pr_reg_bin_isid; | |
330 | u64 pr_res_key; | |
331 | atomic_t pr_res_holders; | |
332 | struct se_node_acl *pr_reg_nacl; | |
333 | struct se_dev_entry *pr_reg_deve; | |
334 | struct se_lun *pr_reg_tg_pt_lun; | |
335 | struct list_head pr_reg_list; | |
336 | struct list_head pr_reg_abort_list; | |
337 | struct list_head pr_reg_aptpl_list; | |
338 | struct list_head pr_reg_atp_list; | |
339 | struct list_head pr_reg_atp_mem_list; | |
340 | } ____cacheline_aligned; | |
341 | ||
342 | /* | |
343 | * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS, | |
344 | * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c: | |
345 | * core_setup_reservations() | |
346 | */ | |
347 | struct t10_reservation_ops { | |
348 | int (*t10_reservation_check)(struct se_cmd *, u32 *); | |
349 | int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32); | |
350 | int (*t10_pr_register)(struct se_cmd *); | |
351 | int (*t10_pr_clear)(struct se_cmd *); | |
352 | }; | |
353 | ||
e3d6f909 | 354 | struct t10_reservation { |
c66ac9db NB |
355 | /* Reservation effects all target ports */ |
356 | int pr_all_tg_pt; | |
357 | /* Activate Persistence across Target Power Loss enabled | |
358 | * for SCSI device */ | |
359 | int pr_aptpl_active; | |
e3d6f909 | 360 | /* Used by struct t10_reservation->pr_aptpl_buf_len */ |
c66ac9db NB |
361 | #define PR_APTPL_BUF_LEN 8192 |
362 | u32 pr_aptpl_buf_len; | |
363 | u32 pr_generation; | |
364 | t10_reservations_index_t res_type; | |
365 | spinlock_t registration_lock; | |
366 | spinlock_t aptpl_reg_lock; | |
367 | /* | |
368 | * This will always be set by one individual I_T Nexus. | |
369 | * However with all_tg_pt=1, other I_T Nexus from the | |
370 | * same initiator can access PR reg/res info on a different | |
371 | * target port. | |
372 | * | |
373 | * There is also the 'All Registrants' case, where there is | |
374 | * a single *pr_res_holder of the reservation, but all | |
375 | * registrations are considered reservation holders. | |
376 | */ | |
377 | struct se_node_acl *pr_res_holder; | |
378 | struct list_head registration_list; | |
379 | struct list_head aptpl_reg_list; | |
380 | struct t10_reservation_ops pr_ops; | |
381 | } ____cacheline_aligned; | |
382 | ||
383 | struct se_queue_req { | |
384 | int state; | |
e3d6f909 | 385 | struct se_cmd *cmd; |
c66ac9db NB |
386 | struct list_head qr_list; |
387 | } ____cacheline_aligned; | |
388 | ||
389 | struct se_queue_obj { | |
390 | atomic_t queue_cnt; | |
391 | spinlock_t cmd_queue_lock; | |
392 | struct list_head qobj_list; | |
393 | wait_queue_head_t thread_wq; | |
394 | } ____cacheline_aligned; | |
395 | ||
c66ac9db | 396 | struct se_task { |
c66ac9db | 397 | unsigned long long task_lba; |
3189b067 CH |
398 | u32 task_sectors; |
399 | u32 task_size; | |
400 | struct se_cmd *task_se_cmd; | |
401 | struct scatterlist *task_sg; | |
402 | struct scatterlist *task_sg_bidi; | |
403 | u32 task_sg_nents; | |
404 | u16 task_flags; | |
405 | u8 task_sense; | |
406 | u8 task_scsi_status; | |
407 | int task_error_status; | |
c66ac9db | 408 | enum dma_data_direction task_data_direction; |
3189b067 | 409 | atomic_t task_state_active; |
c66ac9db | 410 | struct timer_list task_timer; |
3189b067 CH |
411 | struct list_head t_list; |
412 | struct list_head t_execute_list; | |
413 | struct list_head t_state_list; | |
414 | struct completion task_stop_comp; | |
c66ac9db NB |
415 | } ____cacheline_aligned; |
416 | ||
c66ac9db NB |
417 | struct se_cmd { |
418 | /* SAM response code being sent to initiator */ | |
419 | u8 scsi_status; | |
420 | u8 scsi_asc; | |
421 | u8 scsi_ascq; | |
422 | u8 scsi_sense_reason; | |
423 | u16 scsi_sense_length; | |
424 | /* Delay for ALUA Active/NonOptimized state access in milliseconds */ | |
425 | int alua_nonop_delay; | |
426 | /* See include/linux/dma-mapping.h */ | |
427 | enum dma_data_direction data_direction; | |
428 | /* For SAM Task Attribute */ | |
429 | int sam_task_attr; | |
430 | /* Transport protocol dependent state, see transport_state_table */ | |
431 | enum transport_state_table t_state; | |
c66ac9db NB |
432 | /* Transport specific error status */ |
433 | int transport_error_status; | |
434 | /* See se_cmd_flags_table */ | |
435 | u32 se_cmd_flags; | |
436 | u32 se_ordered_id; | |
437 | /* Total size in bytes associated with command */ | |
438 | u32 data_length; | |
439 | /* SCSI Presented Data Transfer Length */ | |
440 | u32 cmd_spdtl; | |
441 | u32 residual_count; | |
442 | u32 orig_fe_lun; | |
443 | /* Persistent Reservation key */ | |
444 | u64 pr_res_key; | |
445 | atomic_t transport_sent; | |
446 | /* Used for sense data */ | |
447 | void *sense_buffer; | |
5951146d AG |
448 | struct list_head se_delayed_node; |
449 | struct list_head se_ordered_node; | |
450 | struct list_head se_lun_node; | |
07bde79a | 451 | struct list_head se_qf_node; |
c66ac9db NB |
452 | struct se_device *se_dev; |
453 | struct se_dev_entry *se_deve; | |
454 | struct se_device *se_obj_ptr; | |
455 | struct se_device *se_orig_obj_ptr; | |
456 | struct se_lun *se_lun; | |
457 | /* Only used for internal passthrough and legacy TCM fabric modules */ | |
458 | struct se_session *se_sess; | |
459 | struct se_tmr_req *se_tmr_req; | |
5951146d | 460 | struct list_head se_queue_node; |
c66ac9db NB |
461 | struct target_core_fabric_ops *se_tfo; |
462 | int (*transport_emulate_cdb)(struct se_cmd *); | |
c66ac9db | 463 | void (*transport_complete_callback)(struct se_cmd *); |
07bde79a | 464 | |
a1d8b49a AG |
465 | unsigned char *t_task_cdb; |
466 | unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; | |
467 | unsigned long long t_task_lba; | |
468 | int t_tasks_failed; | |
469 | int t_tasks_fua; | |
470 | bool t_tasks_bidi; | |
a1d8b49a AG |
471 | u32 t_tasks_sg_chained_no; |
472 | atomic_t t_fe_count; | |
473 | atomic_t t_se_count; | |
474 | atomic_t t_task_cdbs_left; | |
475 | atomic_t t_task_cdbs_ex_left; | |
476 | atomic_t t_task_cdbs_timeout_left; | |
477 | atomic_t t_task_cdbs_sent; | |
478 | atomic_t t_transport_aborted; | |
479 | atomic_t t_transport_active; | |
480 | atomic_t t_transport_complete; | |
481 | atomic_t t_transport_queue_active; | |
482 | atomic_t t_transport_sent; | |
483 | atomic_t t_transport_stop; | |
484 | atomic_t t_transport_timeout; | |
485 | atomic_t transport_dev_active; | |
486 | atomic_t transport_lun_active; | |
487 | atomic_t transport_lun_fe_stop; | |
488 | atomic_t transport_lun_stop; | |
489 | spinlock_t t_state_lock; | |
490 | struct completion t_transport_stop_comp; | |
491 | struct completion transport_lun_fe_stop_comp; | |
492 | struct completion transport_lun_stop_comp; | |
493 | struct scatterlist *t_tasks_sg_chained; | |
05d1c7c0 | 494 | |
a1d8b49a AG |
495 | /* |
496 | * Used for pre-registered fabric SGL passthrough WRITE and READ | |
497 | * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop | |
498 | * and other HW target mode fabric modules. | |
499 | */ | |
500 | struct scatterlist *t_task_pt_sgl; | |
501 | u32 t_task_pt_sgl_num; | |
ec98f782 AG |
502 | |
503 | struct scatterlist *t_data_sg; | |
504 | unsigned int t_data_nents; | |
505 | struct scatterlist *t_bidi_data_sg; | |
506 | unsigned int t_bidi_data_nents; | |
507 | ||
a1d8b49a | 508 | /* Used for BIDI READ */ |
a1d8b49a AG |
509 | struct list_head t_task_list; |
510 | u32 t_task_list_num; | |
511 | ||
c66ac9db NB |
512 | } ____cacheline_aligned; |
513 | ||
c66ac9db NB |
514 | struct se_tmr_req { |
515 | /* Task Management function to be preformed */ | |
516 | u8 function; | |
517 | /* Task Management response to send */ | |
518 | u8 response; | |
519 | int call_transport; | |
520 | /* Reference to ITT that Task Mgmt should be preformed */ | |
521 | u32 ref_task_tag; | |
522 | /* 64-bit encoded SAM LUN from $FABRIC_MOD TMR header */ | |
523 | u64 ref_task_lun; | |
524 | void *fabric_tmr_ptr; | |
525 | struct se_cmd *task_cmd; | |
526 | struct se_cmd *ref_cmd; | |
527 | struct se_device *tmr_dev; | |
528 | struct se_lun *tmr_lun; | |
529 | struct list_head tmr_list; | |
530 | } ____cacheline_aligned; | |
531 | ||
532 | struct se_ua { | |
533 | u8 ua_asc; | |
534 | u8 ua_ascq; | |
535 | struct se_node_acl *ua_nacl; | |
536 | struct list_head ua_dev_list; | |
537 | struct list_head ua_nacl_list; | |
538 | } ____cacheline_aligned; | |
539 | ||
540 | struct se_node_acl { | |
541 | char initiatorname[TRANSPORT_IQN_LEN]; | |
542 | /* Used to signal demo mode created ACL, disabled by default */ | |
5dd7ed2e | 543 | bool dynamic_node_acl; |
c66ac9db NB |
544 | u32 queue_depth; |
545 | u32 acl_index; | |
546 | u64 num_cmds; | |
547 | u64 read_bytes; | |
548 | u64 write_bytes; | |
549 | spinlock_t stats_lock; | |
550 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ | |
551 | atomic_t acl_pr_ref_count; | |
c66ac9db NB |
552 | struct se_dev_entry *device_list; |
553 | struct se_session *nacl_sess; | |
554 | struct se_portal_group *se_tpg; | |
555 | spinlock_t device_list_lock; | |
556 | spinlock_t nacl_sess_lock; | |
557 | struct config_group acl_group; | |
558 | struct config_group acl_attrib_group; | |
559 | struct config_group acl_auth_group; | |
560 | struct config_group acl_param_group; | |
12d23384 NB |
561 | struct config_group acl_fabric_stat_group; |
562 | struct config_group *acl_default_groups[5]; | |
c66ac9db NB |
563 | struct list_head acl_list; |
564 | struct list_head acl_sess_list; | |
565 | } ____cacheline_aligned; | |
566 | ||
567 | struct se_session { | |
c66ac9db NB |
568 | u64 sess_bin_isid; |
569 | struct se_node_acl *se_node_acl; | |
570 | struct se_portal_group *se_tpg; | |
571 | void *fabric_sess_ptr; | |
572 | struct list_head sess_list; | |
573 | struct list_head sess_acl_list; | |
574 | } ____cacheline_aligned; | |
575 | ||
c66ac9db NB |
576 | struct se_device; |
577 | struct se_transform_info; | |
578 | struct scatterlist; | |
579 | ||
12d23384 NB |
580 | struct se_ml_stat_grps { |
581 | struct config_group stat_group; | |
582 | struct config_group scsi_auth_intr_group; | |
583 | struct config_group scsi_att_intr_port_group; | |
584 | }; | |
585 | ||
c66ac9db NB |
586 | struct se_lun_acl { |
587 | char initiatorname[TRANSPORT_IQN_LEN]; | |
588 | u32 mapped_lun; | |
589 | struct se_node_acl *se_lun_nacl; | |
590 | struct se_lun *se_lun; | |
591 | struct list_head lacl_list; | |
592 | struct config_group se_lun_group; | |
12d23384 | 593 | struct se_ml_stat_grps ml_stat_grps; |
c66ac9db NB |
594 | } ____cacheline_aligned; |
595 | ||
596 | struct se_dev_entry { | |
5dd7ed2e | 597 | bool def_pr_registered; |
c66ac9db NB |
598 | /* See transport_lunflags_table */ |
599 | u32 lun_flags; | |
600 | u32 deve_cmds; | |
601 | u32 mapped_lun; | |
602 | u32 average_bytes; | |
603 | u32 last_byte_count; | |
604 | u32 total_cmds; | |
605 | u32 total_bytes; | |
606 | u64 pr_res_key; | |
607 | u64 creation_time; | |
608 | u32 attach_count; | |
609 | u64 read_bytes; | |
610 | u64 write_bytes; | |
611 | atomic_t ua_count; | |
612 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ | |
613 | atomic_t pr_ref_count; | |
614 | struct se_lun_acl *se_lun_acl; | |
615 | spinlock_t ua_lock; | |
616 | struct se_lun *se_lun; | |
617 | struct list_head alua_port_list; | |
618 | struct list_head ua_list; | |
619 | } ____cacheline_aligned; | |
620 | ||
621 | struct se_dev_limits { | |
622 | /* Max supported HW queue depth */ | |
623 | u32 hw_queue_depth; | |
624 | /* Max supported virtual queue depth */ | |
625 | u32 queue_depth; | |
626 | /* From include/linux/blkdev.h for the other HW/SW limits. */ | |
627 | struct queue_limits limits; | |
628 | } ____cacheline_aligned; | |
629 | ||
630 | struct se_dev_attrib { | |
631 | int emulate_dpo; | |
632 | int emulate_fua_write; | |
633 | int emulate_fua_read; | |
634 | int emulate_write_cache; | |
635 | int emulate_ua_intlck_ctrl; | |
636 | int emulate_tas; | |
637 | int emulate_tpu; | |
638 | int emulate_tpws; | |
639 | int emulate_reservations; | |
640 | int emulate_alua; | |
641 | int enforce_pr_isids; | |
e22a7f07 | 642 | int is_nonrot; |
5de619a3 | 643 | int emulate_rest_reord; |
c66ac9db NB |
644 | u32 hw_block_size; |
645 | u32 block_size; | |
646 | u32 hw_max_sectors; | |
647 | u32 max_sectors; | |
648 | u32 optimal_sectors; | |
649 | u32 hw_queue_depth; | |
650 | u32 queue_depth; | |
651 | u32 task_timeout; | |
652 | u32 max_unmap_lba_count; | |
653 | u32 max_unmap_block_desc_count; | |
654 | u32 unmap_granularity; | |
655 | u32 unmap_granularity_alignment; | |
656 | struct se_subsystem_dev *da_sub_dev; | |
657 | struct config_group da_group; | |
658 | } ____cacheline_aligned; | |
659 | ||
12d23384 NB |
660 | struct se_dev_stat_grps { |
661 | struct config_group stat_group; | |
662 | struct config_group scsi_dev_group; | |
663 | struct config_group scsi_tgt_dev_group; | |
664 | struct config_group scsi_lu_group; | |
665 | }; | |
666 | ||
c66ac9db NB |
667 | struct se_subsystem_dev { |
668 | /* Used for struct se_subsystem_dev-->se_dev_alias, must be less than PAGE_SIZE */ | |
669 | #define SE_DEV_ALIAS_LEN 512 | |
670 | unsigned char se_dev_alias[SE_DEV_ALIAS_LEN]; | |
671 | /* Used for struct se_subsystem_dev->se_dev_udev_path[], must be less than PAGE_SIZE */ | |
672 | #define SE_UDEV_PATH_LEN 512 | |
673 | unsigned char se_dev_udev_path[SE_UDEV_PATH_LEN]; | |
674 | u32 su_dev_flags; | |
675 | struct se_hba *se_dev_hba; | |
676 | struct se_device *se_dev_ptr; | |
677 | struct se_dev_attrib se_dev_attrib; | |
678 | /* T10 Asymmetric Logical Unit Assignment for Target Ports */ | |
679 | struct t10_alua t10_alua; | |
680 | /* T10 Inquiry and VPD WWN Information */ | |
681 | struct t10_wwn t10_wwn; | |
682 | /* T10 SPC-2 + SPC-3 Reservations */ | |
e3d6f909 | 683 | struct t10_reservation t10_pr; |
c66ac9db NB |
684 | spinlock_t se_dev_lock; |
685 | void *se_dev_su_ptr; | |
e3d6f909 | 686 | struct list_head se_dev_node; |
c66ac9db NB |
687 | struct config_group se_dev_group; |
688 | /* For T10 Reservations */ | |
689 | struct config_group se_dev_pr_group; | |
12d23384 NB |
690 | /* For target_core_stat.c groups */ |
691 | struct se_dev_stat_grps dev_stat_grps; | |
c66ac9db NB |
692 | } ____cacheline_aligned; |
693 | ||
c66ac9db NB |
694 | struct se_device { |
695 | /* Set to 1 if thread is NOT sleeping on thread_sem */ | |
696 | u8 thread_active; | |
697 | u8 dev_status_timer_flags; | |
698 | /* RELATIVE TARGET PORT IDENTIFER Counter */ | |
699 | u16 dev_rpti_counter; | |
700 | /* Used for SAM Task Attribute ordering */ | |
701 | u32 dev_cur_ordered_id; | |
702 | u32 dev_flags; | |
703 | u32 dev_port_count; | |
704 | /* See transport_device_status_table */ | |
705 | u32 dev_status; | |
706 | u32 dev_tcq_window_closed; | |
707 | /* Physical device queue depth */ | |
708 | u32 queue_depth; | |
709 | /* Used for SPC-2 reservations enforce of ISIDs */ | |
710 | u64 dev_res_bin_isid; | |
711 | t10_task_attr_index_t dev_task_attr_type; | |
712 | /* Pointer to transport specific device structure */ | |
713 | void *dev_ptr; | |
714 | u32 dev_index; | |
715 | u64 creation_time; | |
716 | u32 num_resets; | |
717 | u64 num_cmds; | |
718 | u64 read_bytes; | |
719 | u64 write_bytes; | |
720 | spinlock_t stats_lock; | |
721 | /* Active commands on this virtual SE device */ | |
722 | atomic_t active_cmds; | |
723 | atomic_t simple_cmds; | |
724 | atomic_t depth_left; | |
725 | atomic_t dev_ordered_id; | |
726 | atomic_t dev_tur_active; | |
727 | atomic_t execute_tasks; | |
728 | atomic_t dev_status_thr_count; | |
729 | atomic_t dev_hoq_count; | |
730 | atomic_t dev_ordered_sync; | |
07bde79a | 731 | atomic_t dev_qf_count; |
c66ac9db NB |
732 | struct se_obj dev_obj; |
733 | struct se_obj dev_access_obj; | |
734 | struct se_obj dev_export_obj; | |
e3d6f909 | 735 | struct se_queue_obj dev_queue_obj; |
c66ac9db NB |
736 | spinlock_t delayed_cmd_lock; |
737 | spinlock_t ordered_cmd_lock; | |
738 | spinlock_t execute_task_lock; | |
739 | spinlock_t state_task_lock; | |
740 | spinlock_t dev_alua_lock; | |
741 | spinlock_t dev_reservation_lock; | |
742 | spinlock_t dev_state_lock; | |
743 | spinlock_t dev_status_lock; | |
744 | spinlock_t dev_status_thr_lock; | |
745 | spinlock_t se_port_lock; | |
746 | spinlock_t se_tmr_lock; | |
07bde79a | 747 | spinlock_t qf_cmd_lock; |
c66ac9db NB |
748 | /* Used for legacy SPC-2 reservationsa */ |
749 | struct se_node_acl *dev_reserved_node_acl; | |
750 | /* Used for ALUA Logical Unit Group membership */ | |
751 | struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; | |
752 | /* Used for SPC-3 Persistent Reservations */ | |
753 | struct t10_pr_registration *dev_pr_res_holder; | |
754 | struct list_head dev_sep_list; | |
755 | struct list_head dev_tmr_list; | |
756 | struct timer_list dev_status_timer; | |
757 | /* Pointer to descriptor for processing thread */ | |
758 | struct task_struct *process_thread; | |
759 | pid_t process_thread_pid; | |
760 | struct task_struct *dev_mgmt_thread; | |
07bde79a | 761 | struct work_struct qf_work_queue; |
c66ac9db NB |
762 | struct list_head delayed_cmd_list; |
763 | struct list_head ordered_cmd_list; | |
764 | struct list_head execute_task_list; | |
765 | struct list_head state_task_list; | |
07bde79a | 766 | struct list_head qf_cmd_list; |
c66ac9db NB |
767 | /* Pointer to associated SE HBA */ |
768 | struct se_hba *se_hba; | |
769 | struct se_subsystem_dev *se_sub_dev; | |
770 | /* Pointer to template of function pointers for transport */ | |
771 | struct se_subsystem_api *transport; | |
772 | /* Linked list for struct se_hba struct se_device list */ | |
773 | struct list_head dev_list; | |
774 | /* Linked list for struct se_global->g_se_dev_list */ | |
775 | struct list_head g_se_dev_list; | |
776 | } ____cacheline_aligned; | |
777 | ||
c66ac9db NB |
778 | struct se_hba { |
779 | u16 hba_tpgt; | |
780 | u32 hba_id; | |
781 | /* See hba_flags_table */ | |
782 | u32 hba_flags; | |
783 | /* Virtual iSCSI devices attached. */ | |
784 | u32 dev_count; | |
785 | u32 hba_index; | |
c66ac9db NB |
786 | /* Pointer to transport specific host structure. */ |
787 | void *hba_ptr; | |
788 | /* Linked list for struct se_device */ | |
789 | struct list_head hba_dev_list; | |
e3d6f909 | 790 | struct list_head hba_node; |
c66ac9db | 791 | spinlock_t device_lock; |
c66ac9db NB |
792 | struct config_group hba_group; |
793 | struct mutex hba_access_mutex; | |
794 | struct se_subsystem_api *transport; | |
795 | } ____cacheline_aligned; | |
796 | ||
12d23384 NB |
797 | struct se_port_stat_grps { |
798 | struct config_group stat_group; | |
799 | struct config_group scsi_port_group; | |
800 | struct config_group scsi_tgt_port_group; | |
801 | struct config_group scsi_transport_group; | |
802 | }; | |
803 | ||
c66ac9db NB |
804 | struct se_lun { |
805 | /* See transport_lun_status_table */ | |
806 | enum transport_lun_status_table lun_status; | |
807 | u32 lun_access; | |
808 | u32 lun_flags; | |
809 | u32 unpacked_lun; | |
810 | atomic_t lun_acl_count; | |
811 | spinlock_t lun_acl_lock; | |
812 | spinlock_t lun_cmd_lock; | |
813 | spinlock_t lun_sep_lock; | |
814 | struct completion lun_shutdown_comp; | |
815 | struct list_head lun_cmd_list; | |
816 | struct list_head lun_acl_list; | |
817 | struct se_device *lun_se_dev; | |
12d23384 | 818 | struct se_port *lun_sep; |
c66ac9db | 819 | struct config_group lun_group; |
12d23384 | 820 | struct se_port_stat_grps port_stat_grps; |
c66ac9db NB |
821 | } ____cacheline_aligned; |
822 | ||
e89d15ee NB |
823 | struct scsi_port_stats { |
824 | u64 cmd_pdus; | |
825 | u64 tx_data_octets; | |
826 | u64 rx_data_octets; | |
827 | } ____cacheline_aligned; | |
828 | ||
c66ac9db NB |
829 | struct se_port { |
830 | /* RELATIVE TARGET PORT IDENTIFER */ | |
831 | u16 sep_rtpi; | |
832 | int sep_tg_pt_secondary_stat; | |
833 | int sep_tg_pt_secondary_write_md; | |
834 | u32 sep_index; | |
835 | struct scsi_port_stats sep_stats; | |
836 | /* Used for ALUA Target Port Groups membership */ | |
837 | atomic_t sep_tg_pt_gp_active; | |
838 | atomic_t sep_tg_pt_secondary_offline; | |
839 | /* Used for PR ALL_TG_PT=1 */ | |
840 | atomic_t sep_tg_pt_ref_cnt; | |
841 | spinlock_t sep_alua_lock; | |
842 | struct mutex sep_tg_pt_md_mutex; | |
843 | struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; | |
844 | struct se_lun *sep_lun; | |
845 | struct se_portal_group *sep_tpg; | |
846 | struct list_head sep_alua_list; | |
847 | struct list_head sep_list; | |
848 | } ____cacheline_aligned; | |
849 | ||
850 | struct se_tpg_np { | |
1f6fe7cb | 851 | struct se_portal_group *tpg_np_parent; |
c66ac9db NB |
852 | struct config_group tpg_np_group; |
853 | } ____cacheline_aligned; | |
854 | ||
855 | struct se_portal_group { | |
856 | /* Type of target portal group, see transport_tpg_type_table */ | |
857 | enum transport_tpg_type_table se_tpg_type; | |
858 | /* Number of ACLed Initiator Nodes for this TPG */ | |
859 | u32 num_node_acls; | |
860 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ | |
861 | atomic_t tpg_pr_ref_count; | |
862 | /* Spinlock for adding/removing ACLed Nodes */ | |
863 | spinlock_t acl_node_lock; | |
864 | /* Spinlock for adding/removing sessions */ | |
865 | spinlock_t session_lock; | |
866 | spinlock_t tpg_lun_lock; | |
867 | /* Pointer to $FABRIC_MOD portal group */ | |
868 | void *se_tpg_fabric_ptr; | |
e3d6f909 | 869 | struct list_head se_tpg_node; |
c66ac9db NB |
870 | /* linked list for initiator ACL list */ |
871 | struct list_head acl_node_list; | |
872 | struct se_lun *tpg_lun_list; | |
873 | struct se_lun tpg_virt_lun0; | |
25985edc | 874 | /* List of TCM sessions associated wth this TPG */ |
c66ac9db NB |
875 | struct list_head tpg_sess_list; |
876 | /* Pointer to $FABRIC_MOD dependent code */ | |
877 | struct target_core_fabric_ops *se_tpg_tfo; | |
878 | struct se_wwn *se_tpg_wwn; | |
879 | struct config_group tpg_group; | |
880 | struct config_group *tpg_default_groups[6]; | |
881 | struct config_group tpg_lun_group; | |
882 | struct config_group tpg_np_group; | |
883 | struct config_group tpg_acl_group; | |
884 | struct config_group tpg_attrib_group; | |
885 | struct config_group tpg_param_group; | |
886 | } ____cacheline_aligned; | |
887 | ||
c66ac9db NB |
888 | struct se_wwn { |
889 | struct target_fabric_configfs *wwn_tf; | |
890 | struct config_group wwn_group; | |
12d23384 NB |
891 | struct config_group *wwn_default_groups[2]; |
892 | struct config_group fabric_stat_group; | |
c66ac9db NB |
893 | } ____cacheline_aligned; |
894 | ||
c66ac9db | 895 | #endif /* TARGET_CORE_BASE_H */ |