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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> | |
c0add7fd | 8 | #include <linux/percpu_ida.h> |
c66ac9db NB |
9 | #include <scsi/scsi_cmnd.h> |
10 | #include <net/sock.h> | |
11 | #include <net/tcp.h> | |
c66ac9db | 12 | |
9765b1f3 | 13 | #define TARGET_CORE_MOD_VERSION "v4.1.0-rc2-ml" |
c4795fb2 | 14 | #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION |
c66ac9db | 15 | |
c66ac9db | 16 | /* Maximum Number of LUNs per Target Portal Group */ |
d0229ae3 | 17 | /* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */ |
c66ac9db NB |
18 | #define TRANSPORT_MAX_LUNS_PER_TPG 256 |
19 | /* | |
20 | * By default we use 32-byte CDBs in TCM Core and subsystem plugin code. | |
21 | * | |
22 | * Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and | |
23 | * include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use | |
24 | * 16-byte CDBs by default and require an extra allocation for | |
25985edc | 25 | * 32-byte CDBs to because of legacy issues. |
c66ac9db NB |
26 | * |
27 | * Within TCM Core there are no such legacy limitiations, so we go ahead | |
28 | * use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size() | |
29 | * within all TCM Core and subsystem plugin code. | |
30 | */ | |
31 | #define TCM_MAX_COMMAND_SIZE 32 | |
32 | /* | |
33 | * From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently | |
34 | * defined 96, but the real limit is 252 (or 260 including the header) | |
35 | */ | |
36 | #define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE | |
37 | /* Used by transport_send_check_condition_and_sense() */ | |
38 | #define SPC_SENSE_KEY_OFFSET 2 | |
895f3022 | 39 | #define SPC_ADD_SENSE_LEN_OFFSET 7 |
c66ac9db NB |
40 | #define SPC_ASC_KEY_OFFSET 12 |
41 | #define SPC_ASCQ_KEY_OFFSET 13 | |
42 | #define TRANSPORT_IQN_LEN 224 | |
43 | /* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */ | |
44 | #define LU_GROUP_NAME_BUF 256 | |
45 | /* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */ | |
46 | #define TG_PT_GROUP_NAME_BUF 256 | |
47 | /* Used to parse VPD into struct t10_vpd */ | |
703d641d | 48 | #define VPD_TMP_BUF_SIZE 254 |
c66ac9db NB |
49 | /* Used by transport_generic_cmd_sequencer() */ |
50 | #define READ_BLOCK_LEN 6 | |
51 | #define READ_CAP_LEN 8 | |
52 | #define READ_POSITION_LEN 20 | |
53 | #define INQUIRY_LEN 36 | |
54 | /* Used by transport_get_inquiry_vpd_serial() */ | |
55 | #define INQUIRY_VPD_SERIAL_LEN 254 | |
56 | /* Used by transport_get_inquiry_vpd_device_ident() */ | |
57 | #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254 | |
58 | ||
c4795fb2 CH |
59 | /* Attempts before moving from SHORT to LONG */ |
60 | #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 | |
61 | #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ | |
62 | #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */ | |
63 | ||
64 | #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ | |
65 | ||
c4795fb2 CH |
66 | /* struct se_dev_attrib sanity values */ |
67 | /* Default max_unmap_lba_count */ | |
68 | #define DA_MAX_UNMAP_LBA_COUNT 0 | |
69 | /* Default max_unmap_block_desc_count */ | |
70 | #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0 | |
71 | /* Default unmap_granularity */ | |
72 | #define DA_UNMAP_GRANULARITY_DEFAULT 0 | |
73 | /* Default unmap_granularity_alignment */ | |
74 | #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 | |
773cbaf7 NB |
75 | /* Default max_write_same_len, disabled by default */ |
76 | #define DA_MAX_WRITE_SAME_LEN 0 | |
015487b8 RD |
77 | /* Default max transfer length */ |
78 | #define DA_FABRIC_MAX_SECTORS 8192 | |
adfa9570 TB |
79 | /* Use a model alias based on the configfs backend device name */ |
80 | #define DA_EMULATE_MODEL_ALIAS 0 | |
c4795fb2 CH |
81 | /* Emulation for Direct Page Out */ |
82 | #define DA_EMULATE_DPO 0 | |
83 | /* Emulation for Forced Unit Access WRITEs */ | |
84 | #define DA_EMULATE_FUA_WRITE 1 | |
85 | /* Emulation for Forced Unit Access READs */ | |
86 | #define DA_EMULATE_FUA_READ 0 | |
87 | /* Emulation for WriteCache and SYNCHRONIZE_CACHE */ | |
88 | #define DA_EMULATE_WRITE_CACHE 0 | |
89 | /* Emulation for UNIT ATTENTION Interlock Control */ | |
90 | #define DA_EMULATE_UA_INTLLCK_CTRL 0 | |
91 | /* Emulation for TASK_ABORTED status (TAS) by default */ | |
92 | #define DA_EMULATE_TAS 1 | |
93 | /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ | |
94 | #define DA_EMULATE_TPU 0 | |
95 | /* | |
96 | * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using | |
97 | * block/blk-lib.c:blkdev_issue_discard() | |
98 | */ | |
99 | #define DA_EMULATE_TPWS 0 | |
100 | /* No Emulation for PSCSI by default */ | |
c4795fb2 CH |
101 | #define DA_EMULATE_ALUA 0 |
102 | /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ | |
103 | #define DA_ENFORCE_PR_ISIDS 1 | |
104 | #define DA_STATUS_MAX_SECTORS_MIN 16 | |
105 | #define DA_STATUS_MAX_SECTORS_MAX 8192 | |
106 | /* By default don't report non-rotating (solid state) medium */ | |
107 | #define DA_IS_NONROT 0 | |
108 | /* Queue Algorithm Modifier default for restricted reordering in control mode page */ | |
109 | #define DA_EMULATE_REST_REORD 0 | |
110 | ||
d95b8246 | 111 | #define SE_INQUIRY_BUF 512 |
c4795fb2 | 112 | #define SE_MODE_PAGE_BUF 512 |
32a8811f | 113 | #define SE_SENSE_BUF 96 |
c4795fb2 | 114 | |
c66ac9db NB |
115 | /* struct se_hba->hba_flags */ |
116 | enum hba_flags_table { | |
117 | HBA_FLAGS_INTERNAL_USE = 0x01, | |
118 | HBA_FLAGS_PSCSI_MODE = 0x02, | |
119 | }; | |
120 | ||
121 | /* struct se_lun->lun_status */ | |
122 | enum transport_lun_status_table { | |
123 | TRANSPORT_LUN_STATUS_FREE = 0, | |
124 | TRANSPORT_LUN_STATUS_ACTIVE = 1, | |
125 | }; | |
126 | ||
127 | /* struct se_portal_group->se_tpg_type */ | |
128 | enum transport_tpg_type_table { | |
129 | TRANSPORT_TPG_TYPE_NORMAL = 0, | |
130 | TRANSPORT_TPG_TYPE_DISCOVERY = 1, | |
131 | }; | |
132 | ||
c66ac9db NB |
133 | /* Special transport agnostic struct se_cmd->t_states */ |
134 | enum transport_state_table { | |
135 | TRANSPORT_NO_STATE = 0, | |
136 | TRANSPORT_NEW_CMD = 1, | |
c66ac9db | 137 | TRANSPORT_WRITE_PENDING = 3, |
c66ac9db | 138 | TRANSPORT_PROCESSING = 5, |
35e0e757 | 139 | TRANSPORT_COMPLETE = 6, |
c66ac9db | 140 | TRANSPORT_ISTATE_PROCESSING = 11, |
07bde79a | 141 | TRANSPORT_COMPLETE_QF_WP = 18, |
e057f533 | 142 | TRANSPORT_COMPLETE_QF_OK = 19, |
c66ac9db NB |
143 | }; |
144 | ||
145 | /* Used for struct se_cmd->se_cmd_flags */ | |
146 | enum se_cmd_flags_table { | |
147 | SCF_SUPPORTED_SAM_OPCODE = 0x00000001, | |
148 | SCF_TRANSPORT_TASK_SENSE = 0x00000002, | |
149 | SCF_EMULATED_TASK_SENSE = 0x00000004, | |
64f1db38 CH |
150 | SCF_SCSI_DATA_CDB = 0x00000008, |
151 | SCF_SCSI_TMR_CDB = 0x00000010, | |
64f1db38 CH |
152 | SCF_FUA = 0x00000080, |
153 | SCF_SE_LUN_CMD = 0x00000100, | |
64f1db38 CH |
154 | SCF_BIDI = 0x00000400, |
155 | SCF_SENT_CHECK_CONDITION = 0x00000800, | |
156 | SCF_OVERFLOW_BIT = 0x00001000, | |
157 | SCF_UNDERFLOW_BIT = 0x00002000, | |
158 | SCF_SENT_DELAYED_TAS = 0x00004000, | |
159 | SCF_ALUA_NON_OPTIMIZED = 0x00008000, | |
64f1db38 CH |
160 | SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, |
161 | SCF_ACK_KREF = 0x00040000, | |
c66ac9db NB |
162 | }; |
163 | ||
164 | /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ | |
165 | enum transport_lunflags_table { | |
166 | TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, | |
167 | TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, | |
168 | TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, | |
169 | TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, | |
170 | }; | |
171 | ||
c66ac9db | 172 | /* |
de103c93 | 173 | * Used by transport_send_check_condition_and_sense() |
c66ac9db NB |
174 | * to signal which ASC/ASCQ sense payload should be built. |
175 | */ | |
de103c93 CH |
176 | typedef unsigned __bitwise__ sense_reason_t; |
177 | ||
c66ac9db | 178 | enum tcm_sense_reason_table { |
de103c93 | 179 | #define R(x) (__force sense_reason_t )(x) |
ba829137 | 180 | TCM_NO_SENSE = R(0x00), |
de103c93 CH |
181 | TCM_NON_EXISTENT_LUN = R(0x01), |
182 | TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02), | |
183 | TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03), | |
184 | TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04), | |
185 | TCM_SERVICE_CRC_ERROR = R(0x05), | |
186 | TCM_SNACK_REJECTED = R(0x06), | |
187 | TCM_SECTOR_COUNT_TOO_MANY = R(0x07), | |
188 | TCM_INVALID_CDB_FIELD = R(0x08), | |
189 | TCM_INVALID_PARAMETER_LIST = R(0x09), | |
190 | TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a), | |
191 | TCM_UNKNOWN_MODE_PAGE = R(0x0b), | |
192 | TCM_WRITE_PROTECTED = R(0x0c), | |
193 | TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d), | |
194 | TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e), | |
195 | TCM_CHECK_CONDITION_NOT_READY = R(0x0f), | |
196 | TCM_RESERVATION_CONFLICT = R(0x10), | |
197 | TCM_ADDRESS_OUT_OF_RANGE = R(0x11), | |
198 | TCM_OUT_OF_RESOURCES = R(0x12), | |
bb992e72 | 199 | TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), |
de103c93 | 200 | #undef R |
c66ac9db NB |
201 | }; |
202 | ||
a6360785 NB |
203 | enum target_sc_flags_table { |
204 | TARGET_SCF_BIDI_OP = 0x01, | |
205 | TARGET_SCF_ACK_KREF = 0x02, | |
b0d79946 | 206 | TARGET_SCF_UNKNOWN_SIZE = 0x04, |
a6360785 NB |
207 | }; |
208 | ||
c4795fb2 CH |
209 | /* fabric independent task management function values */ |
210 | enum tcm_tmreq_table { | |
211 | TMR_ABORT_TASK = 1, | |
212 | TMR_ABORT_TASK_SET = 2, | |
213 | TMR_CLEAR_ACA = 3, | |
214 | TMR_CLEAR_TASK_SET = 4, | |
215 | TMR_LUN_RESET = 5, | |
216 | TMR_TARGET_WARM_RESET = 6, | |
217 | TMR_TARGET_COLD_RESET = 7, | |
c4795fb2 CH |
218 | }; |
219 | ||
220 | /* fabric independent task management response values */ | |
221 | enum tcm_tmrsp_table { | |
11fee8a7 JE |
222 | TMR_FUNCTION_COMPLETE = 1, |
223 | TMR_TASK_DOES_NOT_EXIST = 2, | |
224 | TMR_LUN_DOES_NOT_EXIST = 3, | |
225 | TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4, | |
226 | TMR_FUNCTION_REJECTED = 5, | |
c4795fb2 CH |
227 | }; |
228 | ||
e89d15ee NB |
229 | /* |
230 | * Used for target SCSI statistics | |
231 | */ | |
232 | typedef enum { | |
233 | SCSI_INST_INDEX, | |
234 | SCSI_DEVICE_INDEX, | |
235 | SCSI_AUTH_INTR_INDEX, | |
236 | SCSI_INDEX_TYPE_MAX | |
237 | } scsi_index_t; | |
238 | ||
c66ac9db NB |
239 | struct se_cmd; |
240 | ||
241 | struct t10_alua { | |
c66ac9db NB |
242 | /* ALUA Target Port Group ID */ |
243 | u16 alua_tg_pt_gps_counter; | |
244 | u32 alua_tg_pt_gps_count; | |
245 | spinlock_t tg_pt_gps_lock; | |
0fd97ccf | 246 | struct se_device *t10_dev; |
c66ac9db NB |
247 | /* Used for default ALUA Target Port Group */ |
248 | struct t10_alua_tg_pt_gp *default_tg_pt_gp; | |
249 | /* Used for default ALUA Target Port Group ConfigFS group */ | |
250 | struct config_group alua_tg_pt_gps_group; | |
c66ac9db | 251 | struct list_head tg_pt_gps_list; |
e0a53e70 | 252 | }; |
c66ac9db NB |
253 | |
254 | struct t10_alua_lu_gp { | |
255 | u16 lu_gp_id; | |
256 | int lu_gp_valid_id; | |
257 | u32 lu_gp_members; | |
c66ac9db NB |
258 | atomic_t lu_gp_ref_cnt; |
259 | spinlock_t lu_gp_lock; | |
260 | struct config_group lu_gp_group; | |
e3d6f909 | 261 | struct list_head lu_gp_node; |
c66ac9db | 262 | struct list_head lu_gp_mem_list; |
e0a53e70 | 263 | }; |
c66ac9db NB |
264 | |
265 | struct t10_alua_lu_gp_member { | |
5dd7ed2e | 266 | bool lu_gp_assoc; |
c66ac9db NB |
267 | atomic_t lu_gp_mem_ref_cnt; |
268 | spinlock_t lu_gp_mem_lock; | |
269 | struct t10_alua_lu_gp *lu_gp; | |
270 | struct se_device *lu_gp_mem_dev; | |
271 | struct list_head lu_gp_mem_list; | |
e0a53e70 | 272 | }; |
c66ac9db NB |
273 | |
274 | struct t10_alua_tg_pt_gp { | |
275 | u16 tg_pt_gp_id; | |
276 | int tg_pt_gp_valid_id; | |
277 | int tg_pt_gp_alua_access_status; | |
278 | int tg_pt_gp_alua_access_type; | |
279 | int tg_pt_gp_nonop_delay_msecs; | |
280 | int tg_pt_gp_trans_delay_msecs; | |
5b9a4d72 | 281 | int tg_pt_gp_implict_trans_secs; |
c66ac9db NB |
282 | int tg_pt_gp_pref; |
283 | int tg_pt_gp_write_metadata; | |
284 | /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */ | |
285 | #define ALUA_MD_BUF_LEN 1024 | |
286 | u32 tg_pt_gp_md_buf_len; | |
287 | u32 tg_pt_gp_members; | |
288 | atomic_t tg_pt_gp_alua_access_state; | |
289 | atomic_t tg_pt_gp_ref_cnt; | |
290 | spinlock_t tg_pt_gp_lock; | |
291 | struct mutex tg_pt_gp_md_mutex; | |
0fd97ccf | 292 | struct se_device *tg_pt_gp_dev; |
c66ac9db NB |
293 | struct config_group tg_pt_gp_group; |
294 | struct list_head tg_pt_gp_list; | |
295 | struct list_head tg_pt_gp_mem_list; | |
e0a53e70 | 296 | }; |
c66ac9db NB |
297 | |
298 | struct t10_alua_tg_pt_gp_member { | |
5dd7ed2e | 299 | bool tg_pt_gp_assoc; |
c66ac9db NB |
300 | atomic_t tg_pt_gp_mem_ref_cnt; |
301 | spinlock_t tg_pt_gp_mem_lock; | |
302 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
303 | struct se_port *tg_pt; | |
304 | struct list_head tg_pt_gp_mem_list; | |
e0a53e70 | 305 | }; |
c66ac9db NB |
306 | |
307 | struct t10_vpd { | |
308 | unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; | |
309 | int protocol_identifier_set; | |
310 | u32 protocol_identifier; | |
311 | u32 device_identifier_code_set; | |
312 | u32 association; | |
313 | u32 device_identifier_type; | |
314 | struct list_head vpd_list; | |
e0a53e70 | 315 | }; |
c66ac9db NB |
316 | |
317 | struct t10_wwn { | |
e3d6f909 AG |
318 | char vendor[8]; |
319 | char model[16]; | |
320 | char revision[4]; | |
321 | char unit_serial[INQUIRY_VPD_SERIAL_LEN]; | |
c66ac9db | 322 | spinlock_t t10_vpd_lock; |
0fd97ccf | 323 | struct se_device *t10_dev; |
c66ac9db NB |
324 | struct config_group t10_wwn_group; |
325 | struct list_head t10_vpd_list; | |
e0a53e70 | 326 | }; |
c66ac9db | 327 | |
c66ac9db NB |
328 | struct t10_pr_registration { |
329 | /* Used for fabrics that contain WWN+ISID */ | |
330 | #define PR_REG_ISID_LEN 16 | |
331 | /* PR_REG_ISID_LEN + ',i,0x' */ | |
332 | #define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5) | |
333 | char pr_reg_isid[PR_REG_ISID_LEN]; | |
334 | /* Used during APTPL metadata reading */ | |
335 | #define PR_APTPL_MAX_IPORT_LEN 256 | |
336 | unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN]; | |
337 | /* Used during APTPL metadata reading */ | |
338 | #define PR_APTPL_MAX_TPORT_LEN 256 | |
339 | unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN]; | |
c66ac9db NB |
340 | u16 pr_aptpl_rpti; |
341 | u16 pr_reg_tpgt; | |
342 | /* Reservation effects all target ports */ | |
343 | int pr_reg_all_tg_pt; | |
344 | /* Activate Persistence across Target Power Loss */ | |
345 | int pr_reg_aptpl; | |
346 | int pr_res_holder; | |
347 | int pr_res_type; | |
348 | int pr_res_scope; | |
349 | /* Used for fabric initiator WWPNs using a ISID */ | |
5dd7ed2e | 350 | bool isid_present_at_reg; |
c66ac9db NB |
351 | u32 pr_res_mapped_lun; |
352 | u32 pr_aptpl_target_lun; | |
353 | u32 pr_res_generation; | |
354 | u64 pr_reg_bin_isid; | |
355 | u64 pr_res_key; | |
356 | atomic_t pr_res_holders; | |
357 | struct se_node_acl *pr_reg_nacl; | |
358 | struct se_dev_entry *pr_reg_deve; | |
359 | struct se_lun *pr_reg_tg_pt_lun; | |
360 | struct list_head pr_reg_list; | |
361 | struct list_head pr_reg_abort_list; | |
362 | struct list_head pr_reg_aptpl_list; | |
363 | struct list_head pr_reg_atp_list; | |
364 | struct list_head pr_reg_atp_mem_list; | |
e0a53e70 | 365 | }; |
c66ac9db | 366 | |
e3d6f909 | 367 | struct t10_reservation { |
c66ac9db NB |
368 | /* Reservation effects all target ports */ |
369 | int pr_all_tg_pt; | |
370 | /* Activate Persistence across Target Power Loss enabled | |
371 | * for SCSI device */ | |
372 | int pr_aptpl_active; | |
c66ac9db | 373 | #define PR_APTPL_BUF_LEN 8192 |
c66ac9db | 374 | u32 pr_generation; |
c66ac9db NB |
375 | spinlock_t registration_lock; |
376 | spinlock_t aptpl_reg_lock; | |
377 | /* | |
378 | * This will always be set by one individual I_T Nexus. | |
379 | * However with all_tg_pt=1, other I_T Nexus from the | |
380 | * same initiator can access PR reg/res info on a different | |
381 | * target port. | |
382 | * | |
383 | * There is also the 'All Registrants' case, where there is | |
384 | * a single *pr_res_holder of the reservation, but all | |
385 | * registrations are considered reservation holders. | |
386 | */ | |
387 | struct se_node_acl *pr_res_holder; | |
388 | struct list_head registration_list; | |
389 | struct list_head aptpl_reg_list; | |
e0a53e70 | 390 | }; |
c66ac9db | 391 | |
c8e31f26 AG |
392 | struct se_tmr_req { |
393 | /* Task Management function to be performed */ | |
394 | u8 function; | |
395 | /* Task Management response to send */ | |
396 | u8 response; | |
397 | int call_transport; | |
398 | /* Reference to ITT that Task Mgmt should be performed */ | |
399 | u32 ref_task_tag; | |
c8e31f26 AG |
400 | void *fabric_tmr_ptr; |
401 | struct se_cmd *task_cmd; | |
c8e31f26 AG |
402 | struct se_device *tmr_dev; |
403 | struct se_lun *tmr_lun; | |
404 | struct list_head tmr_list; | |
405 | }; | |
406 | ||
c66ac9db NB |
407 | struct se_cmd { |
408 | /* SAM response code being sent to initiator */ | |
409 | u8 scsi_status; | |
410 | u8 scsi_asc; | |
411 | u8 scsi_ascq; | |
c66ac9db NB |
412 | u16 scsi_sense_length; |
413 | /* Delay for ALUA Active/NonOptimized state access in milliseconds */ | |
414 | int alua_nonop_delay; | |
415 | /* See include/linux/dma-mapping.h */ | |
416 | enum dma_data_direction data_direction; | |
417 | /* For SAM Task Attribute */ | |
418 | int sam_task_attr; | |
c0add7fd NB |
419 | /* Used for se_sess->sess_tag_pool */ |
420 | unsigned int map_tag; | |
c66ac9db NB |
421 | /* Transport protocol dependent state, see transport_state_table */ |
422 | enum transport_state_table t_state; | |
5f655e8d | 423 | unsigned cmd_wait_set:1; |
b0d79946 | 424 | unsigned unknown_data_length:1; |
c66ac9db NB |
425 | /* See se_cmd_flags_table */ |
426 | u32 se_cmd_flags; | |
427 | u32 se_ordered_id; | |
428 | /* Total size in bytes associated with command */ | |
429 | u32 data_length; | |
c66ac9db NB |
430 | u32 residual_count; |
431 | u32 orig_fe_lun; | |
432 | /* Persistent Reservation key */ | |
433 | u64 pr_res_key; | |
c66ac9db NB |
434 | /* Used for sense data */ |
435 | void *sense_buffer; | |
5951146d | 436 | struct list_head se_delayed_node; |
5951146d | 437 | struct list_head se_lun_node; |
07bde79a | 438 | struct list_head se_qf_node; |
c66ac9db NB |
439 | struct se_device *se_dev; |
440 | struct se_dev_entry *se_deve; | |
c66ac9db NB |
441 | struct se_lun *se_lun; |
442 | /* Only used for internal passthrough and legacy TCM fabric modules */ | |
443 | struct se_session *se_sess; | |
444 | struct se_tmr_req *se_tmr_req; | |
a17f091d NB |
445 | struct list_head se_cmd_list; |
446 | struct completion cmd_wait_comp; | |
7481deb4 | 447 | struct kref cmd_kref; |
c66ac9db | 448 | struct target_core_fabric_ops *se_tfo; |
de103c93 | 449 | sense_reason_t (*execute_cmd)(struct se_cmd *); |
c66ac9db | 450 | void (*transport_complete_callback)(struct se_cmd *); |
07bde79a | 451 | |
a1d8b49a AG |
452 | unsigned char *t_task_cdb; |
453 | unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; | |
454 | unsigned long long t_task_lba; | |
7d680f3b CH |
455 | unsigned int transport_state; |
456 | #define CMD_T_ABORTED (1 << 0) | |
457 | #define CMD_T_ACTIVE (1 << 1) | |
458 | #define CMD_T_COMPLETE (1 << 2) | |
7d680f3b CH |
459 | #define CMD_T_SENT (1 << 4) |
460 | #define CMD_T_STOP (1 << 5) | |
461 | #define CMD_T_FAILED (1 << 6) | |
462 | #define CMD_T_LUN_STOP (1 << 7) | |
463 | #define CMD_T_LUN_FE_STOP (1 << 8) | |
464 | #define CMD_T_DEV_ACTIVE (1 << 9) | |
cf572a96 CH |
465 | #define CMD_T_REQUEST_STOP (1 << 10) |
466 | #define CMD_T_BUSY (1 << 11) | |
a1d8b49a AG |
467 | spinlock_t t_state_lock; |
468 | struct completion t_transport_stop_comp; | |
469 | struct completion transport_lun_fe_stop_comp; | |
470 | struct completion transport_lun_stop_comp; | |
05d1c7c0 | 471 | |
35e0e757 CH |
472 | struct work_struct work; |
473 | ||
ec98f782 AG |
474 | struct scatterlist *t_data_sg; |
475 | unsigned int t_data_nents; | |
4949314c | 476 | void *t_data_vmap; |
ec98f782 AG |
477 | struct scatterlist *t_bidi_data_sg; |
478 | unsigned int t_bidi_data_nents; | |
479 | ||
cf572a96 CH |
480 | struct list_head state_list; |
481 | bool state_active; | |
482 | ||
483 | /* old task stop completion, consider merging with some of the above */ | |
484 | struct completion task_stop_comp; | |
485 | ||
5787cacd CH |
486 | /* backend private data */ |
487 | void *priv; | |
e0a53e70 | 488 | }; |
c66ac9db | 489 | |
c66ac9db NB |
490 | struct se_ua { |
491 | u8 ua_asc; | |
492 | u8 ua_ascq; | |
493 | struct se_node_acl *ua_nacl; | |
494 | struct list_head ua_dev_list; | |
495 | struct list_head ua_nacl_list; | |
e0a53e70 | 496 | }; |
c66ac9db NB |
497 | |
498 | struct se_node_acl { | |
499 | char initiatorname[TRANSPORT_IQN_LEN]; | |
500 | /* Used to signal demo mode created ACL, disabled by default */ | |
5dd7ed2e | 501 | bool dynamic_node_acl; |
337c0607 | 502 | bool acl_stop:1; |
c66ac9db NB |
503 | u32 queue_depth; |
504 | u32 acl_index; | |
79e62fc3 AG |
505 | #define MAX_ACL_TAG_SIZE 64 |
506 | char acl_tag[MAX_ACL_TAG_SIZE]; | |
c66ac9db NB |
507 | u64 num_cmds; |
508 | u64 read_bytes; | |
509 | u64 write_bytes; | |
510 | spinlock_t stats_lock; | |
511 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ | |
512 | atomic_t acl_pr_ref_count; | |
f2083241 | 513 | struct se_dev_entry **device_list; |
c66ac9db NB |
514 | struct se_session *nacl_sess; |
515 | struct se_portal_group *se_tpg; | |
516 | spinlock_t device_list_lock; | |
517 | spinlock_t nacl_sess_lock; | |
518 | struct config_group acl_group; | |
519 | struct config_group acl_attrib_group; | |
520 | struct config_group acl_auth_group; | |
521 | struct config_group acl_param_group; | |
12d23384 NB |
522 | struct config_group acl_fabric_stat_group; |
523 | struct config_group *acl_default_groups[5]; | |
c66ac9db NB |
524 | struct list_head acl_list; |
525 | struct list_head acl_sess_list; | |
01468346 | 526 | struct completion acl_free_comp; |
afb999ff | 527 | struct kref acl_kref; |
e0a53e70 | 528 | }; |
c66ac9db NB |
529 | |
530 | struct se_session { | |
5f655e8d | 531 | unsigned sess_tearing_down:1; |
c66ac9db NB |
532 | u64 sess_bin_isid; |
533 | struct se_node_acl *se_node_acl; | |
534 | struct se_portal_group *se_tpg; | |
535 | void *fabric_sess_ptr; | |
536 | struct list_head sess_list; | |
537 | struct list_head sess_acl_list; | |
a17f091d | 538 | struct list_head sess_cmd_list; |
9b31a328 | 539 | struct list_head sess_wait_list; |
a17f091d | 540 | spinlock_t sess_cmd_lock; |
41ac82b6 | 541 | struct kref sess_kref; |
c0add7fd NB |
542 | void *sess_cmd_map; |
543 | struct percpu_ida sess_tag_pool; | |
e0a53e70 | 544 | }; |
c66ac9db | 545 | |
c66ac9db NB |
546 | struct se_device; |
547 | struct se_transform_info; | |
548 | struct scatterlist; | |
549 | ||
12d23384 NB |
550 | struct se_ml_stat_grps { |
551 | struct config_group stat_group; | |
552 | struct config_group scsi_auth_intr_group; | |
553 | struct config_group scsi_att_intr_port_group; | |
554 | }; | |
555 | ||
c66ac9db NB |
556 | struct se_lun_acl { |
557 | char initiatorname[TRANSPORT_IQN_LEN]; | |
558 | u32 mapped_lun; | |
559 | struct se_node_acl *se_lun_nacl; | |
560 | struct se_lun *se_lun; | |
561 | struct list_head lacl_list; | |
562 | struct config_group se_lun_group; | |
12d23384 | 563 | struct se_ml_stat_grps ml_stat_grps; |
e0a53e70 | 564 | }; |
c66ac9db NB |
565 | |
566 | struct se_dev_entry { | |
5dd7ed2e | 567 | bool def_pr_registered; |
c66ac9db NB |
568 | /* See transport_lunflags_table */ |
569 | u32 lun_flags; | |
c66ac9db | 570 | u32 mapped_lun; |
c66ac9db | 571 | u32 total_cmds; |
c66ac9db NB |
572 | u64 pr_res_key; |
573 | u64 creation_time; | |
574 | u32 attach_count; | |
575 | u64 read_bytes; | |
576 | u64 write_bytes; | |
577 | atomic_t ua_count; | |
578 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ | |
579 | atomic_t pr_ref_count; | |
580 | struct se_lun_acl *se_lun_acl; | |
581 | spinlock_t ua_lock; | |
582 | struct se_lun *se_lun; | |
583 | struct list_head alua_port_list; | |
584 | struct list_head ua_list; | |
e0a53e70 | 585 | }; |
c66ac9db | 586 | |
c66ac9db | 587 | struct se_dev_attrib { |
adfa9570 | 588 | int emulate_model_alias; |
c66ac9db NB |
589 | int emulate_dpo; |
590 | int emulate_fua_write; | |
591 | int emulate_fua_read; | |
592 | int emulate_write_cache; | |
593 | int emulate_ua_intlck_ctrl; | |
594 | int emulate_tas; | |
595 | int emulate_tpu; | |
596 | int emulate_tpws; | |
c66ac9db | 597 | int enforce_pr_isids; |
e22a7f07 | 598 | int is_nonrot; |
5de619a3 | 599 | int emulate_rest_reord; |
c66ac9db NB |
600 | u32 hw_block_size; |
601 | u32 block_size; | |
602 | u32 hw_max_sectors; | |
015487b8 | 603 | u32 fabric_max_sectors; |
c66ac9db NB |
604 | u32 optimal_sectors; |
605 | u32 hw_queue_depth; | |
606 | u32 queue_depth; | |
c66ac9db NB |
607 | u32 max_unmap_lba_count; |
608 | u32 max_unmap_block_desc_count; | |
609 | u32 unmap_granularity; | |
610 | u32 unmap_granularity_alignment; | |
773cbaf7 | 611 | u32 max_write_same_len; |
0fd97ccf | 612 | struct se_device *da_dev; |
c66ac9db | 613 | struct config_group da_group; |
e0a53e70 | 614 | }; |
c66ac9db | 615 | |
12d23384 NB |
616 | struct se_dev_stat_grps { |
617 | struct config_group stat_group; | |
618 | struct config_group scsi_dev_group; | |
619 | struct config_group scsi_tgt_dev_group; | |
620 | struct config_group scsi_lu_group; | |
621 | }; | |
622 | ||
c66ac9db | 623 | struct se_device { |
0ff87549 NB |
624 | #define SE_DEV_LINK_MAGIC 0xfeeddeef |
625 | u32 dev_link_magic; | |
c66ac9db NB |
626 | /* RELATIVE TARGET PORT IDENTIFER Counter */ |
627 | u16 dev_rpti_counter; | |
628 | /* Used for SAM Task Attribute ordering */ | |
629 | u32 dev_cur_ordered_id; | |
630 | u32 dev_flags; | |
0fd97ccf CH |
631 | #define DF_CONFIGURED 0x00000001 |
632 | #define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002 | |
633 | #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 | |
634 | #define DF_USING_UDEV_PATH 0x00000008 | |
635 | #define DF_USING_ALIAS 0x00000010 | |
c66ac9db | 636 | u32 dev_port_count; |
c66ac9db NB |
637 | /* Physical device queue depth */ |
638 | u32 queue_depth; | |
639 | /* Used for SPC-2 reservations enforce of ISIDs */ | |
640 | u64 dev_res_bin_isid; | |
c66ac9db | 641 | /* Pointer to transport specific device structure */ |
c66ac9db NB |
642 | u32 dev_index; |
643 | u64 creation_time; | |
644 | u32 num_resets; | |
645 | u64 num_cmds; | |
646 | u64 read_bytes; | |
647 | u64 write_bytes; | |
648 | spinlock_t stats_lock; | |
649 | /* Active commands on this virtual SE device */ | |
c66ac9db | 650 | atomic_t simple_cmds; |
c66ac9db | 651 | atomic_t dev_ordered_id; |
c66ac9db | 652 | atomic_t dev_ordered_sync; |
07bde79a | 653 | atomic_t dev_qf_count; |
0fd97ccf | 654 | int export_count; |
c66ac9db | 655 | spinlock_t delayed_cmd_lock; |
c66ac9db | 656 | spinlock_t execute_task_lock; |
c66ac9db | 657 | spinlock_t dev_reservation_lock; |
0fd97ccf CH |
658 | unsigned int dev_reservation_flags; |
659 | #define DRF_SPC2_RESERVATIONS 0x00000001 | |
660 | #define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002 | |
c66ac9db NB |
661 | spinlock_t se_port_lock; |
662 | spinlock_t se_tmr_lock; | |
07bde79a | 663 | spinlock_t qf_cmd_lock; |
c66ac9db NB |
664 | /* Used for legacy SPC-2 reservationsa */ |
665 | struct se_node_acl *dev_reserved_node_acl; | |
666 | /* Used for ALUA Logical Unit Group membership */ | |
667 | struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem; | |
668 | /* Used for SPC-3 Persistent Reservations */ | |
669 | struct t10_pr_registration *dev_pr_res_holder; | |
670 | struct list_head dev_sep_list; | |
671 | struct list_head dev_tmr_list; | |
af877292 | 672 | struct workqueue_struct *tmr_wq; |
07bde79a | 673 | struct work_struct qf_work_queue; |
c66ac9db | 674 | struct list_head delayed_cmd_list; |
cf572a96 | 675 | struct list_head state_list; |
07bde79a | 676 | struct list_head qf_cmd_list; |
c66ac9db NB |
677 | /* Pointer to associated SE HBA */ |
678 | struct se_hba *se_hba; | |
0fd97ccf CH |
679 | /* T10 Inquiry and VPD WWN Information */ |
680 | struct t10_wwn t10_wwn; | |
681 | /* T10 Asymmetric Logical Unit Assignment for Target Ports */ | |
682 | struct t10_alua t10_alua; | |
683 | /* T10 SPC-2 + SPC-3 Reservations */ | |
684 | struct t10_reservation t10_pr; | |
685 | struct se_dev_attrib dev_attrib; | |
686 | struct config_group dev_group; | |
687 | struct config_group dev_pr_group; | |
688 | struct se_dev_stat_grps dev_stat_grps; | |
689 | #define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */ | |
690 | unsigned char dev_alias[SE_DEV_ALIAS_LEN]; | |
691 | #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ | |
692 | unsigned char udev_path[SE_UDEV_PATH_LEN]; | |
c66ac9db NB |
693 | /* Pointer to template of function pointers for transport */ |
694 | struct se_subsystem_api *transport; | |
695 | /* Linked list for struct se_hba struct se_device list */ | |
696 | struct list_head dev_list; | |
e0a53e70 | 697 | }; |
c66ac9db | 698 | |
c66ac9db NB |
699 | struct se_hba { |
700 | u16 hba_tpgt; | |
701 | u32 hba_id; | |
702 | /* See hba_flags_table */ | |
703 | u32 hba_flags; | |
704 | /* Virtual iSCSI devices attached. */ | |
705 | u32 dev_count; | |
706 | u32 hba_index; | |
c66ac9db NB |
707 | /* Pointer to transport specific host structure. */ |
708 | void *hba_ptr; | |
e3d6f909 | 709 | struct list_head hba_node; |
c66ac9db | 710 | spinlock_t device_lock; |
c66ac9db NB |
711 | struct config_group hba_group; |
712 | struct mutex hba_access_mutex; | |
713 | struct se_subsystem_api *transport; | |
e0a53e70 | 714 | }; |
c66ac9db | 715 | |
12d23384 NB |
716 | struct se_port_stat_grps { |
717 | struct config_group stat_group; | |
718 | struct config_group scsi_port_group; | |
719 | struct config_group scsi_tgt_port_group; | |
720 | struct config_group scsi_transport_group; | |
721 | }; | |
722 | ||
c66ac9db | 723 | struct se_lun { |
0ff87549 NB |
724 | #define SE_LUN_LINK_MAGIC 0xffff7771 |
725 | u32 lun_link_magic; | |
c66ac9db NB |
726 | /* See transport_lun_status_table */ |
727 | enum transport_lun_status_table lun_status; | |
728 | u32 lun_access; | |
729 | u32 lun_flags; | |
730 | u32 unpacked_lun; | |
731 | atomic_t lun_acl_count; | |
732 | spinlock_t lun_acl_lock; | |
733 | spinlock_t lun_cmd_lock; | |
734 | spinlock_t lun_sep_lock; | |
735 | struct completion lun_shutdown_comp; | |
736 | struct list_head lun_cmd_list; | |
737 | struct list_head lun_acl_list; | |
738 | struct se_device *lun_se_dev; | |
12d23384 | 739 | struct se_port *lun_sep; |
c66ac9db | 740 | struct config_group lun_group; |
12d23384 | 741 | struct se_port_stat_grps port_stat_grps; |
e0a53e70 | 742 | }; |
c66ac9db | 743 | |
e89d15ee NB |
744 | struct scsi_port_stats { |
745 | u64 cmd_pdus; | |
746 | u64 tx_data_octets; | |
747 | u64 rx_data_octets; | |
e0a53e70 | 748 | }; |
e89d15ee | 749 | |
c66ac9db NB |
750 | struct se_port { |
751 | /* RELATIVE TARGET PORT IDENTIFER */ | |
752 | u16 sep_rtpi; | |
753 | int sep_tg_pt_secondary_stat; | |
754 | int sep_tg_pt_secondary_write_md; | |
755 | u32 sep_index; | |
756 | struct scsi_port_stats sep_stats; | |
757 | /* Used for ALUA Target Port Groups membership */ | |
c66ac9db NB |
758 | atomic_t sep_tg_pt_secondary_offline; |
759 | /* Used for PR ALL_TG_PT=1 */ | |
760 | atomic_t sep_tg_pt_ref_cnt; | |
761 | spinlock_t sep_alua_lock; | |
762 | struct mutex sep_tg_pt_md_mutex; | |
763 | struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; | |
764 | struct se_lun *sep_lun; | |
765 | struct se_portal_group *sep_tpg; | |
766 | struct list_head sep_alua_list; | |
767 | struct list_head sep_list; | |
e0a53e70 | 768 | }; |
c66ac9db NB |
769 | |
770 | struct se_tpg_np { | |
1f6fe7cb | 771 | struct se_portal_group *tpg_np_parent; |
c66ac9db | 772 | struct config_group tpg_np_group; |
e0a53e70 | 773 | }; |
c66ac9db NB |
774 | |
775 | struct se_portal_group { | |
776 | /* Type of target portal group, see transport_tpg_type_table */ | |
777 | enum transport_tpg_type_table se_tpg_type; | |
778 | /* Number of ACLed Initiator Nodes for this TPG */ | |
779 | u32 num_node_acls; | |
780 | /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ | |
781 | atomic_t tpg_pr_ref_count; | |
782 | /* Spinlock for adding/removing ACLed Nodes */ | |
783 | spinlock_t acl_node_lock; | |
784 | /* Spinlock for adding/removing sessions */ | |
785 | spinlock_t session_lock; | |
786 | spinlock_t tpg_lun_lock; | |
787 | /* Pointer to $FABRIC_MOD portal group */ | |
788 | void *se_tpg_fabric_ptr; | |
e3d6f909 | 789 | struct list_head se_tpg_node; |
c66ac9db NB |
790 | /* linked list for initiator ACL list */ |
791 | struct list_head acl_node_list; | |
4a5a75f3 | 792 | struct se_lun **tpg_lun_list; |
c66ac9db | 793 | struct se_lun tpg_virt_lun0; |
25985edc | 794 | /* List of TCM sessions associated wth this TPG */ |
c66ac9db NB |
795 | struct list_head tpg_sess_list; |
796 | /* Pointer to $FABRIC_MOD dependent code */ | |
797 | struct target_core_fabric_ops *se_tpg_tfo; | |
798 | struct se_wwn *se_tpg_wwn; | |
799 | struct config_group tpg_group; | |
e4b512e7 | 800 | struct config_group *tpg_default_groups[7]; |
c66ac9db NB |
801 | struct config_group tpg_lun_group; |
802 | struct config_group tpg_np_group; | |
803 | struct config_group tpg_acl_group; | |
804 | struct config_group tpg_attrib_group; | |
e4b512e7 | 805 | struct config_group tpg_auth_group; |
c66ac9db | 806 | struct config_group tpg_param_group; |
e0a53e70 | 807 | }; |
c66ac9db | 808 | |
c66ac9db NB |
809 | struct se_wwn { |
810 | struct target_fabric_configfs *wwn_tf; | |
811 | struct config_group wwn_group; | |
12d23384 NB |
812 | struct config_group *wwn_default_groups[2]; |
813 | struct config_group fabric_stat_group; | |
e0a53e70 | 814 | }; |
c66ac9db | 815 | |
c66ac9db | 816 | #endif /* TARGET_CORE_BASE_H */ |