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Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -08001#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>
Nicholas Bellingerc0add7f2013-06-07 17:38:58 -07008#include <linux/percpu_ida.h>
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -08009#include <scsi/scsi_cmnd.h>
10#include <net/sock.h>
11#include <net/tcp.h>
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -080012
Nicholas Bellinger2999ee72013-09-05 15:50:24 -070013#define TARGET_CORE_MOD_VERSION "v4.1.0"
Christoph Hellwigc4795fb2011-11-16 09:46:48 -050014#define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -080015
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -080016/* Maximum Number of LUNs per Target Portal Group */
Andy Groverd0229ae2011-07-08 17:04:53 -070017/* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -080018#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
Lucas De Marchi25985ed2011-03-30 22:57:33 -030025 * 32-byte CDBs to because of legacy issues.
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -080026 *
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
Roland Dreier895f3022011-12-13 14:55:33 -080039#define SPC_ADD_SENSE_LEN_OFFSET 7
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -080040#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 */
Dan Carpenter703d6412013-01-18 16:05:12 +030048#define VPD_TMP_BUF_SIZE 254
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -080049/* 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
Christoph Hellwigc4795fb2011-11-16 09:46:48 -050059/* 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
Christoph Hellwigc4795fb2011-11-16 09:46:48 -050066/* 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
Nicholas Bellinger773cbaf2012-11-15 11:02:49 -080075/* Default max_write_same_len, disabled by default */
76#define DA_MAX_WRITE_SAME_LEN 0
Roland Dreier015487b2012-02-13 16:18:17 -080077/* Default max transfer length */
78#define DA_FABRIC_MAX_SECTORS 8192
Tregaron Baylyadfa9572013-01-31 15:30:24 -070079/* Use a model alias based on the configfs backend device name */
80#define DA_EMULATE_MODEL_ALIAS 0
Christoph Hellwigc4795fb2011-11-16 09:46:48 -050081/* 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
Nicholas Bellinger0123a9e2013-08-20 14:24:09 -0700100/* Emulation for CompareAndWrite (AtomicTestandSet) by default */
101#define DA_EMULATE_CAW 1
Nicholas Bellingerd397a442013-08-22 14:17:20 -0700102/* Emulation for 3rd Party Copy (ExtendedCopy) by default */
103#define DA_EMULATE_3PC 1
Christoph Hellwigc4795fb2011-11-16 09:46:48 -0500104/* No Emulation for PSCSI by default */
Christoph Hellwigc4795fb2011-11-16 09:46:48 -0500105#define DA_EMULATE_ALUA 0
106/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
107#define DA_ENFORCE_PR_ISIDS 1
108#define DA_STATUS_MAX_SECTORS_MIN 16
109#define DA_STATUS_MAX_SECTORS_MAX 8192
110/* By default don't report non-rotating (solid state) medium */
111#define DA_IS_NONROT 0
112/* Queue Algorithm Modifier default for restricted reordering in control mode page */
113#define DA_EMULATE_REST_REORD 0
114
Roland Dreierd95b8242012-02-13 16:18:14 -0800115#define SE_INQUIRY_BUF 512
Christoph Hellwigc4795fb2011-11-16 09:46:48 -0500116#define SE_MODE_PAGE_BUF 512
Paolo Bonzini32a88112012-09-07 17:30:36 +0200117#define SE_SENSE_BUF 96
Christoph Hellwigc4795fb2011-11-16 09:46:48 -0500118
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800119/* struct se_hba->hba_flags */
120enum hba_flags_table {
121 HBA_FLAGS_INTERNAL_USE = 0x01,
122 HBA_FLAGS_PSCSI_MODE = 0x02,
123};
124
125/* struct se_lun->lun_status */
126enum transport_lun_status_table {
127 TRANSPORT_LUN_STATUS_FREE = 0,
128 TRANSPORT_LUN_STATUS_ACTIVE = 1,
129};
130
131/* struct se_portal_group->se_tpg_type */
132enum transport_tpg_type_table {
133 TRANSPORT_TPG_TYPE_NORMAL = 0,
134 TRANSPORT_TPG_TYPE_DISCOVERY = 1,
135};
136
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800137/* Special transport agnostic struct se_cmd->t_states */
138enum transport_state_table {
139 TRANSPORT_NO_STATE = 0,
140 TRANSPORT_NEW_CMD = 1,
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800141 TRANSPORT_WRITE_PENDING = 3,
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800142 TRANSPORT_PROCESSING = 5,
Christoph Hellwig35e0e752011-10-17 13:56:53 -0400143 TRANSPORT_COMPLETE = 6,
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800144 TRANSPORT_ISTATE_PROCESSING = 11,
Nicholas Bellinger07bde792011-06-13 14:46:09 -0700145 TRANSPORT_COMPLETE_QF_WP = 18,
Christoph Hellwige057f532011-10-17 13:56:41 -0400146 TRANSPORT_COMPLETE_QF_OK = 19,
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800147};
148
149/* Used for struct se_cmd->se_cmd_flags */
150enum se_cmd_flags_table {
151 SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
152 SCF_TRANSPORT_TASK_SENSE = 0x00000002,
153 SCF_EMULATED_TASK_SENSE = 0x00000004,
Christoph Hellwig64f1db32012-05-20 11:59:11 -0400154 SCF_SCSI_DATA_CDB = 0x00000008,
155 SCF_SCSI_TMR_CDB = 0x00000010,
Christoph Hellwig64f1db32012-05-20 11:59:11 -0400156 SCF_FUA = 0x00000080,
157 SCF_SE_LUN_CMD = 0x00000100,
Christoph Hellwig64f1db32012-05-20 11:59:11 -0400158 SCF_BIDI = 0x00000400,
159 SCF_SENT_CHECK_CONDITION = 0x00000800,
160 SCF_OVERFLOW_BIT = 0x00001000,
161 SCF_UNDERFLOW_BIT = 0x00002000,
162 SCF_SENT_DELAYED_TAS = 0x00004000,
163 SCF_ALUA_NON_OPTIMIZED = 0x00008000,
Christoph Hellwig64f1db32012-05-20 11:59:11 -0400164 SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
165 SCF_ACK_KREF = 0x00040000,
Nicholas Bellingera82a9532013-08-19 23:57:30 -0700166 SCF_COMPARE_AND_WRITE = 0x00080000,
167 SCF_COMPARE_AND_WRITE_POST = 0x00100000,
Nicholas Bellingercbf031f2013-08-20 15:38:55 -0700168 SCF_CMD_XCOPY_PASSTHROUGH = 0x00200000,
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800169};
170
171/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
172enum transport_lunflags_table {
173 TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
174 TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
175 TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
176 TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
177};
178
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800179/*
Christoph Hellwigde103c92012-11-06 12:24:09 -0800180 * Used by transport_send_check_condition_and_sense()
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800181 * to signal which ASC/ASCQ sense payload should be built.
182 */
Christoph Hellwigde103c92012-11-06 12:24:09 -0800183typedef unsigned __bitwise__ sense_reason_t;
184
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800185enum tcm_sense_reason_table {
Christoph Hellwigde103c92012-11-06 12:24:09 -0800186#define R(x) (__force sense_reason_t )(x)
Hannes Reineckeba829132012-12-17 09:53:33 +0100187 TCM_NO_SENSE = R(0x00),
Christoph Hellwigde103c92012-11-06 12:24:09 -0800188 TCM_NON_EXISTENT_LUN = R(0x01),
189 TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02),
190 TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03),
191 TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04),
192 TCM_SERVICE_CRC_ERROR = R(0x05),
193 TCM_SNACK_REJECTED = R(0x06),
194 TCM_SECTOR_COUNT_TOO_MANY = R(0x07),
195 TCM_INVALID_CDB_FIELD = R(0x08),
196 TCM_INVALID_PARAMETER_LIST = R(0x09),
197 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a),
198 TCM_UNKNOWN_MODE_PAGE = R(0x0b),
199 TCM_WRITE_PROTECTED = R(0x0c),
200 TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d),
201 TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e),
202 TCM_CHECK_CONDITION_NOT_READY = R(0x0f),
203 TCM_RESERVATION_CONFLICT = R(0x10),
204 TCM_ADDRESS_OUT_OF_RANGE = R(0x11),
205 TCM_OUT_OF_RESOURCES = R(0x12),
Roland Dreierbb992e72013-02-08 15:18:39 -0800206 TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13),
Nicholas Bellinger818b5712013-08-19 15:10:38 -0700207 TCM_MISCOMPARE_VERIFY = R(0x14),
Christoph Hellwigde103c92012-11-06 12:24:09 -0800208#undef R
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800209};
210
Nicholas Bellingera6360782011-11-18 20:36:22 -0800211enum target_sc_flags_table {
212 TARGET_SCF_BIDI_OP = 0x01,
213 TARGET_SCF_ACK_KREF = 0x02,
Sebastian Andrzej Siewiorb0d79942012-01-10 14:16:59 +0100214 TARGET_SCF_UNKNOWN_SIZE = 0x04,
Nicholas Bellingera6360782011-11-18 20:36:22 -0800215};
216
Christoph Hellwigc4795fb2011-11-16 09:46:48 -0500217/* fabric independent task management function values */
218enum tcm_tmreq_table {
219 TMR_ABORT_TASK = 1,
220 TMR_ABORT_TASK_SET = 2,
221 TMR_CLEAR_ACA = 3,
222 TMR_CLEAR_TASK_SET = 4,
223 TMR_LUN_RESET = 5,
224 TMR_TARGET_WARM_RESET = 6,
225 TMR_TARGET_COLD_RESET = 7,
Christoph Hellwigc4795fb2011-11-16 09:46:48 -0500226};
227
228/* fabric independent task management response values */
229enum tcm_tmrsp_table {
Joern Engel11fee8a2013-07-03 11:22:16 -0400230 TMR_FUNCTION_COMPLETE = 1,
231 TMR_TASK_DOES_NOT_EXIST = 2,
232 TMR_LUN_DOES_NOT_EXIST = 3,
233 TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4,
234 TMR_FUNCTION_REJECTED = 5,
Christoph Hellwigc4795fb2011-11-16 09:46:48 -0500235};
236
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800237/*
Nicholas Bellingere89d15e2011-02-09 15:35:03 -0800238 * Used for target SCSI statistics
239 */
240typedef enum {
241 SCSI_INST_INDEX,
242 SCSI_DEVICE_INDEX,
243 SCSI_AUTH_INTR_INDEX,
244 SCSI_INDEX_TYPE_MAX
245} scsi_index_t;
246
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800247struct se_cmd;
248
249struct t10_alua {
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800250 /* ALUA Target Port Group ID */
251 u16 alua_tg_pt_gps_counter;
252 u32 alua_tg_pt_gps_count;
253 spinlock_t tg_pt_gps_lock;
Christoph Hellwig0fd97cc2012-10-08 00:03:19 -0400254 struct se_device *t10_dev;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800255 /* Used for default ALUA Target Port Group */
256 struct t10_alua_tg_pt_gp *default_tg_pt_gp;
257 /* Used for default ALUA Target Port Group ConfigFS group */
258 struct config_group alua_tg_pt_gps_group;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800259 struct list_head tg_pt_gps_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500260};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800261
262struct t10_alua_lu_gp {
263 u16 lu_gp_id;
264 int lu_gp_valid_id;
265 u32 lu_gp_members;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800266 atomic_t lu_gp_ref_cnt;
267 spinlock_t lu_gp_lock;
268 struct config_group lu_gp_group;
Andy Grovere3d6f902011-07-19 08:55:10 +0000269 struct list_head lu_gp_node;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800270 struct list_head lu_gp_mem_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500271};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800272
273struct t10_alua_lu_gp_member {
Dan Carpenter5dd7ed22011-03-14 04:06:01 -0700274 bool lu_gp_assoc;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800275 atomic_t lu_gp_mem_ref_cnt;
276 spinlock_t lu_gp_mem_lock;
277 struct t10_alua_lu_gp *lu_gp;
278 struct se_device *lu_gp_mem_dev;
279 struct list_head lu_gp_mem_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500280};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800281
282struct t10_alua_tg_pt_gp {
283 u16 tg_pt_gp_id;
284 int tg_pt_gp_valid_id;
285 int tg_pt_gp_alua_access_status;
286 int tg_pt_gp_alua_access_type;
287 int tg_pt_gp_nonop_delay_msecs;
288 int tg_pt_gp_trans_delay_msecs;
Nicholas Bellinger5b9a4d72012-05-16 22:02:34 -0700289 int tg_pt_gp_implict_trans_secs;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800290 int tg_pt_gp_pref;
291 int tg_pt_gp_write_metadata;
292 /* Used by struct t10_alua_tg_pt_gp->tg_pt_gp_md_buf_len */
293#define ALUA_MD_BUF_LEN 1024
294 u32 tg_pt_gp_md_buf_len;
295 u32 tg_pt_gp_members;
296 atomic_t tg_pt_gp_alua_access_state;
297 atomic_t tg_pt_gp_ref_cnt;
298 spinlock_t tg_pt_gp_lock;
299 struct mutex tg_pt_gp_md_mutex;
Christoph Hellwig0fd97cc2012-10-08 00:03:19 -0400300 struct se_device *tg_pt_gp_dev;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800301 struct config_group tg_pt_gp_group;
302 struct list_head tg_pt_gp_list;
303 struct list_head tg_pt_gp_mem_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500304};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800305
306struct t10_alua_tg_pt_gp_member {
Dan Carpenter5dd7ed22011-03-14 04:06:01 -0700307 bool tg_pt_gp_assoc;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800308 atomic_t tg_pt_gp_mem_ref_cnt;
309 spinlock_t tg_pt_gp_mem_lock;
310 struct t10_alua_tg_pt_gp *tg_pt_gp;
311 struct se_port *tg_pt;
312 struct list_head tg_pt_gp_mem_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500313};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800314
315struct t10_vpd {
316 unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
317 int protocol_identifier_set;
318 u32 protocol_identifier;
319 u32 device_identifier_code_set;
320 u32 association;
321 u32 device_identifier_type;
322 struct list_head vpd_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500323};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800324
325struct t10_wwn {
Andy Grovere3d6f902011-07-19 08:55:10 +0000326 char vendor[8];
327 char model[16];
328 char revision[4];
329 char unit_serial[INQUIRY_VPD_SERIAL_LEN];
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800330 spinlock_t t10_vpd_lock;
Christoph Hellwig0fd97cc2012-10-08 00:03:19 -0400331 struct se_device *t10_dev;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800332 struct config_group t10_wwn_group;
333 struct list_head t10_vpd_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500334};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800335
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800336struct t10_pr_registration {
337 /* Used for fabrics that contain WWN+ISID */
338#define PR_REG_ISID_LEN 16
339 /* PR_REG_ISID_LEN + ',i,0x' */
340#define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
341 char pr_reg_isid[PR_REG_ISID_LEN];
342 /* Used during APTPL metadata reading */
343#define PR_APTPL_MAX_IPORT_LEN 256
344 unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
345 /* Used during APTPL metadata reading */
346#define PR_APTPL_MAX_TPORT_LEN 256
347 unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800348 u16 pr_aptpl_rpti;
349 u16 pr_reg_tpgt;
350 /* Reservation effects all target ports */
351 int pr_reg_all_tg_pt;
352 /* Activate Persistence across Target Power Loss */
353 int pr_reg_aptpl;
354 int pr_res_holder;
355 int pr_res_type;
356 int pr_res_scope;
357 /* Used for fabric initiator WWPNs using a ISID */
Dan Carpenter5dd7ed22011-03-14 04:06:01 -0700358 bool isid_present_at_reg;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800359 u32 pr_res_mapped_lun;
360 u32 pr_aptpl_target_lun;
361 u32 pr_res_generation;
362 u64 pr_reg_bin_isid;
363 u64 pr_res_key;
364 atomic_t pr_res_holders;
365 struct se_node_acl *pr_reg_nacl;
366 struct se_dev_entry *pr_reg_deve;
367 struct se_lun *pr_reg_tg_pt_lun;
368 struct list_head pr_reg_list;
369 struct list_head pr_reg_abort_list;
370 struct list_head pr_reg_aptpl_list;
371 struct list_head pr_reg_atp_list;
372 struct list_head pr_reg_atp_mem_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500373};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800374
Andy Grovere3d6f902011-07-19 08:55:10 +0000375struct t10_reservation {
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800376 /* Reservation effects all target ports */
377 int pr_all_tg_pt;
378 /* Activate Persistence across Target Power Loss enabled
379 * for SCSI device */
380 int pr_aptpl_active;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800381#define PR_APTPL_BUF_LEN 8192
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800382 u32 pr_generation;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800383 spinlock_t registration_lock;
384 spinlock_t aptpl_reg_lock;
385 /*
386 * This will always be set by one individual I_T Nexus.
387 * However with all_tg_pt=1, other I_T Nexus from the
388 * same initiator can access PR reg/res info on a different
389 * target port.
390 *
391 * There is also the 'All Registrants' case, where there is
392 * a single *pr_res_holder of the reservation, but all
393 * registrations are considered reservation holders.
394 */
395 struct se_node_acl *pr_res_holder;
396 struct list_head registration_list;
397 struct list_head aptpl_reg_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500398};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800399
Andy Groverc8e31f22012-01-19 13:39:17 -0800400struct se_tmr_req {
401 /* Task Management function to be performed */
402 u8 function;
403 /* Task Management response to send */
404 u8 response;
405 int call_transport;
406 /* Reference to ITT that Task Mgmt should be performed */
407 u32 ref_task_tag;
Andy Groverc8e31f22012-01-19 13:39:17 -0800408 void *fabric_tmr_ptr;
409 struct se_cmd *task_cmd;
Andy Groverc8e31f22012-01-19 13:39:17 -0800410 struct se_device *tmr_dev;
411 struct se_lun *tmr_lun;
412 struct list_head tmr_list;
413};
414
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800415struct se_cmd {
416 /* SAM response code being sent to initiator */
417 u8 scsi_status;
418 u8 scsi_asc;
419 u8 scsi_ascq;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800420 u16 scsi_sense_length;
421 /* Delay for ALUA Active/NonOptimized state access in milliseconds */
422 int alua_nonop_delay;
423 /* See include/linux/dma-mapping.h */
424 enum dma_data_direction data_direction;
425 /* For SAM Task Attribute */
426 int sam_task_attr;
Nicholas Bellingerc0add7f2013-06-07 17:38:58 -0700427 /* Used for se_sess->sess_tag_pool */
428 unsigned int map_tag;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800429 /* Transport protocol dependent state, see transport_state_table */
430 enum transport_state_table t_state;
Bart Van Assche5f655e82011-11-08 20:46:29 +0100431 unsigned cmd_wait_set:1;
Sebastian Andrzej Siewiorb0d79942012-01-10 14:16:59 +0100432 unsigned unknown_data_length:1;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800433 /* See se_cmd_flags_table */
434 u32 se_cmd_flags;
435 u32 se_ordered_id;
436 /* Total size in bytes associated with command */
437 u32 data_length;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800438 u32 residual_count;
439 u32 orig_fe_lun;
440 /* Persistent Reservation key */
441 u64 pr_res_key;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800442 /* Used for sense data */
443 void *sense_buffer;
Andy Grover5951146d2011-07-19 10:26:37 +0000444 struct list_head se_delayed_node;
Andy Grover5951146d2011-07-19 10:26:37 +0000445 struct list_head se_lun_node;
Nicholas Bellinger07bde792011-06-13 14:46:09 -0700446 struct list_head se_qf_node;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800447 struct se_device *se_dev;
448 struct se_dev_entry *se_deve;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800449 struct se_lun *se_lun;
450 /* Only used for internal passthrough and legacy TCM fabric modules */
451 struct se_session *se_sess;
452 struct se_tmr_req *se_tmr_req;
Nicholas Bellingera17f0912011-11-02 21:52:08 -0700453 struct list_head se_cmd_list;
454 struct completion cmd_wait_comp;
Nicholas Bellinger7481deb2011-11-12 00:32:17 -0800455 struct kref cmd_kref;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800456 struct target_core_fabric_ops *se_tfo;
Christoph Hellwigde103c92012-11-06 12:24:09 -0800457 sense_reason_t (*execute_cmd)(struct se_cmd *);
Nicholas Bellingera82a9532013-08-19 23:57:30 -0700458 sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
459 u32, enum dma_data_direction);
Nicholas Bellingera6b01332013-08-19 14:34:17 -0700460 sense_reason_t (*transport_complete_callback)(struct se_cmd *);
Nicholas Bellinger07bde792011-06-13 14:46:09 -0700461
Andy Grovera1d8b492011-05-02 17:12:10 -0700462 unsigned char *t_task_cdb;
463 unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
464 unsigned long long t_task_lba;
Nicholas Bellingera82a9532013-08-19 23:57:30 -0700465 unsigned int t_task_nolb;
Christoph Hellwig7d680f32011-12-21 14:13:47 -0500466 unsigned int transport_state;
467#define CMD_T_ABORTED (1 << 0)
468#define CMD_T_ACTIVE (1 << 1)
469#define CMD_T_COMPLETE (1 << 2)
Christoph Hellwig7d680f32011-12-21 14:13:47 -0500470#define CMD_T_SENT (1 << 4)
471#define CMD_T_STOP (1 << 5)
472#define CMD_T_FAILED (1 << 6)
473#define CMD_T_LUN_STOP (1 << 7)
474#define CMD_T_LUN_FE_STOP (1 << 8)
475#define CMD_T_DEV_ACTIVE (1 << 9)
Christoph Hellwigcf572a92012-04-24 00:25:05 -0400476#define CMD_T_REQUEST_STOP (1 << 10)
477#define CMD_T_BUSY (1 << 11)
Andy Grovera1d8b492011-05-02 17:12:10 -0700478 spinlock_t t_state_lock;
479 struct completion t_transport_stop_comp;
480 struct completion transport_lun_fe_stop_comp;
481 struct completion transport_lun_stop_comp;
Andy Grover05d1c7c2011-07-20 19:13:28 +0000482
Christoph Hellwig35e0e752011-10-17 13:56:53 -0400483 struct work_struct work;
484
Andy Groverec98f782011-07-20 19:28:46 +0000485 struct scatterlist *t_data_sg;
Nicholas Bellinger47e459e2013-08-20 10:45:16 -0700486 struct scatterlist *t_data_sg_orig;
Andy Groverec98f782011-07-20 19:28:46 +0000487 unsigned int t_data_nents;
Nicholas Bellinger47e459e2013-08-20 10:45:16 -0700488 unsigned int t_data_nents_orig;
Andy Grover49493142012-01-16 16:57:08 -0800489 void *t_data_vmap;
Andy Groverec98f782011-07-20 19:28:46 +0000490 struct scatterlist *t_bidi_data_sg;
491 unsigned int t_bidi_data_nents;
492
Christoph Hellwigcf572a92012-04-24 00:25:05 -0400493 struct list_head state_list;
494 bool state_active;
495
496 /* old task stop completion, consider merging with some of the above */
497 struct completion task_stop_comp;
498
Christoph Hellwig5787cac2012-04-24 00:25:06 -0400499 /* backend private data */
500 void *priv;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500501};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800502
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800503struct se_ua {
504 u8 ua_asc;
505 u8 ua_ascq;
506 struct se_node_acl *ua_nacl;
507 struct list_head ua_dev_list;
508 struct list_head ua_nacl_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500509};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800510
511struct se_node_acl {
512 char initiatorname[TRANSPORT_IQN_LEN];
513 /* Used to signal demo mode created ACL, disabled by default */
Dan Carpenter5dd7ed22011-03-14 04:06:01 -0700514 bool dynamic_node_acl;
Nicholas Bellinger337c0602012-03-10 14:36:21 -0800515 bool acl_stop:1;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800516 u32 queue_depth;
517 u32 acl_index;
Andy Grover79e62fc2012-12-11 16:30:53 -0800518#define MAX_ACL_TAG_SIZE 64
519 char acl_tag[MAX_ACL_TAG_SIZE];
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800520 u64 num_cmds;
521 u64 read_bytes;
522 u64 write_bytes;
523 spinlock_t stats_lock;
524 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
525 atomic_t acl_pr_ref_count;
Jörn Engelf2083242012-03-15 15:05:40 -0400526 struct se_dev_entry **device_list;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800527 struct se_session *nacl_sess;
528 struct se_portal_group *se_tpg;
529 spinlock_t device_list_lock;
530 spinlock_t nacl_sess_lock;
531 struct config_group acl_group;
532 struct config_group acl_attrib_group;
533 struct config_group acl_auth_group;
534 struct config_group acl_param_group;
Nicholas Bellinger12d2338422011-03-14 04:06:11 -0700535 struct config_group acl_fabric_stat_group;
536 struct config_group *acl_default_groups[5];
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800537 struct list_head acl_list;
538 struct list_head acl_sess_list;
Nicholas Bellinger01468342012-03-10 14:32:52 -0800539 struct completion acl_free_comp;
Nicholas Bellingerafb999f2012-03-08 23:45:02 -0800540 struct kref acl_kref;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500541};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800542
543struct se_session {
Bart Van Assche5f655e82011-11-08 20:46:29 +0100544 unsigned sess_tearing_down:1;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800545 u64 sess_bin_isid;
546 struct se_node_acl *se_node_acl;
547 struct se_portal_group *se_tpg;
548 void *fabric_sess_ptr;
549 struct list_head sess_list;
550 struct list_head sess_acl_list;
Nicholas Bellingera17f0912011-11-02 21:52:08 -0700551 struct list_head sess_cmd_list;
Nicholas Bellinger9b31a322013-05-15 00:52:44 -0700552 struct list_head sess_wait_list;
Nicholas Bellingera17f0912011-11-02 21:52:08 -0700553 spinlock_t sess_cmd_lock;
Nicholas Bellinger41ac82b2012-02-26 22:22:10 -0800554 struct kref sess_kref;
Nicholas Bellingerc0add7f2013-06-07 17:38:58 -0700555 void *sess_cmd_map;
556 struct percpu_ida sess_tag_pool;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500557};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800558
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800559struct se_device;
560struct se_transform_info;
561struct scatterlist;
562
Nicholas Bellinger12d2338422011-03-14 04:06:11 -0700563struct se_ml_stat_grps {
564 struct config_group stat_group;
565 struct config_group scsi_auth_intr_group;
566 struct config_group scsi_att_intr_port_group;
567};
568
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800569struct se_lun_acl {
570 char initiatorname[TRANSPORT_IQN_LEN];
571 u32 mapped_lun;
572 struct se_node_acl *se_lun_nacl;
573 struct se_lun *se_lun;
574 struct list_head lacl_list;
575 struct config_group se_lun_group;
Nicholas Bellinger12d2338422011-03-14 04:06:11 -0700576 struct se_ml_stat_grps ml_stat_grps;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500577};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800578
579struct se_dev_entry {
Dan Carpenter5dd7ed22011-03-14 04:06:01 -0700580 bool def_pr_registered;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800581 /* See transport_lunflags_table */
582 u32 lun_flags;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800583 u32 mapped_lun;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800584 u32 total_cmds;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800585 u64 pr_res_key;
586 u64 creation_time;
587 u32 attach_count;
588 u64 read_bytes;
589 u64 write_bytes;
590 atomic_t ua_count;
591 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
592 atomic_t pr_ref_count;
593 struct se_lun_acl *se_lun_acl;
594 spinlock_t ua_lock;
595 struct se_lun *se_lun;
596 struct list_head alua_port_list;
597 struct list_head ua_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500598};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800599
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800600struct se_dev_attrib {
Tregaron Baylyadfa9572013-01-31 15:30:24 -0700601 int emulate_model_alias;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800602 int emulate_dpo;
603 int emulate_fua_write;
604 int emulate_fua_read;
605 int emulate_write_cache;
606 int emulate_ua_intlck_ctrl;
607 int emulate_tas;
608 int emulate_tpu;
609 int emulate_tpws;
Nicholas Bellinger0123a9e2013-08-20 14:24:09 -0700610 int emulate_caw;
Nicholas Bellingerd397a442013-08-22 14:17:20 -0700611 int emulate_3pc;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800612 int enforce_pr_isids;
Roland Dreiere22a7f02011-07-05 13:34:52 -0700613 int is_nonrot;
Nicholas Bellinger5de619a2011-07-17 02:57:58 -0700614 int emulate_rest_reord;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800615 u32 hw_block_size;
616 u32 block_size;
617 u32 hw_max_sectors;
Roland Dreier015487b2012-02-13 16:18:17 -0800618 u32 fabric_max_sectors;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800619 u32 optimal_sectors;
620 u32 hw_queue_depth;
621 u32 queue_depth;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800622 u32 max_unmap_lba_count;
623 u32 max_unmap_block_desc_count;
624 u32 unmap_granularity;
625 u32 unmap_granularity_alignment;
Nicholas Bellinger773cbaf2012-11-15 11:02:49 -0800626 u32 max_write_same_len;
Christoph Hellwig0fd97cc2012-10-08 00:03:19 -0400627 struct se_device *da_dev;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800628 struct config_group da_group;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500629};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800630
Nicholas Bellinger12d2338422011-03-14 04:06:11 -0700631struct se_dev_stat_grps {
632 struct config_group stat_group;
633 struct config_group scsi_dev_group;
634 struct config_group scsi_tgt_dev_group;
635 struct config_group scsi_lu_group;
636};
637
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800638struct se_device {
Nicholas Bellinger0ff87542012-12-04 23:43:57 -0800639#define SE_DEV_LINK_MAGIC 0xfeeddeef
640 u32 dev_link_magic;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800641 /* RELATIVE TARGET PORT IDENTIFER Counter */
642 u16 dev_rpti_counter;
643 /* Used for SAM Task Attribute ordering */
644 u32 dev_cur_ordered_id;
645 u32 dev_flags;
Christoph Hellwig0fd97cc2012-10-08 00:03:19 -0400646#define DF_CONFIGURED 0x00000001
647#define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
648#define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
649#define DF_USING_UDEV_PATH 0x00000008
650#define DF_USING_ALIAS 0x00000010
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800651 u32 dev_port_count;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800652 /* Physical device queue depth */
653 u32 queue_depth;
654 /* Used for SPC-2 reservations enforce of ISIDs */
655 u64 dev_res_bin_isid;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800656 /* Pointer to transport specific device structure */
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800657 u32 dev_index;
658 u64 creation_time;
659 u32 num_resets;
660 u64 num_cmds;
661 u64 read_bytes;
662 u64 write_bytes;
663 spinlock_t stats_lock;
664 /* Active commands on this virtual SE device */
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800665 atomic_t simple_cmds;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800666 atomic_t dev_ordered_id;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800667 atomic_t dev_ordered_sync;
Nicholas Bellinger07bde792011-06-13 14:46:09 -0700668 atomic_t dev_qf_count;
Christoph Hellwig0fd97cc2012-10-08 00:03:19 -0400669 int export_count;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800670 spinlock_t delayed_cmd_lock;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800671 spinlock_t execute_task_lock;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800672 spinlock_t dev_reservation_lock;
Christoph Hellwig0fd97cc2012-10-08 00:03:19 -0400673 unsigned int dev_reservation_flags;
674#define DRF_SPC2_RESERVATIONS 0x00000001
675#define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800676 spinlock_t se_port_lock;
677 spinlock_t se_tmr_lock;
Nicholas Bellinger07bde792011-06-13 14:46:09 -0700678 spinlock_t qf_cmd_lock;
Nicholas Bellinger68ff9b92013-08-19 15:20:28 -0700679 struct semaphore caw_sem;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800680 /* Used for legacy SPC-2 reservationsa */
681 struct se_node_acl *dev_reserved_node_acl;
682 /* Used for ALUA Logical Unit Group membership */
683 struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
684 /* Used for SPC-3 Persistent Reservations */
685 struct t10_pr_registration *dev_pr_res_holder;
686 struct list_head dev_sep_list;
687 struct list_head dev_tmr_list;
Christoph Hellwigaf877292012-07-08 15:58:49 -0400688 struct workqueue_struct *tmr_wq;
Nicholas Bellinger07bde792011-06-13 14:46:09 -0700689 struct work_struct qf_work_queue;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800690 struct list_head delayed_cmd_list;
Christoph Hellwigcf572a92012-04-24 00:25:05 -0400691 struct list_head state_list;
Nicholas Bellinger07bde792011-06-13 14:46:09 -0700692 struct list_head qf_cmd_list;
Nicholas Bellingerd9ea32b2013-08-22 11:33:37 -0700693 struct list_head g_dev_node;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800694 /* Pointer to associated SE HBA */
695 struct se_hba *se_hba;
Christoph Hellwig0fd97cc2012-10-08 00:03:19 -0400696 /* T10 Inquiry and VPD WWN Information */
697 struct t10_wwn t10_wwn;
698 /* T10 Asymmetric Logical Unit Assignment for Target Ports */
699 struct t10_alua t10_alua;
700 /* T10 SPC-2 + SPC-3 Reservations */
701 struct t10_reservation t10_pr;
702 struct se_dev_attrib dev_attrib;
703 struct config_group dev_group;
704 struct config_group dev_pr_group;
705 struct se_dev_stat_grps dev_stat_grps;
706#define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
707 unsigned char dev_alias[SE_DEV_ALIAS_LEN];
708#define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
709 unsigned char udev_path[SE_UDEV_PATH_LEN];
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800710 /* Pointer to template of function pointers for transport */
711 struct se_subsystem_api *transport;
712 /* Linked list for struct se_hba struct se_device list */
713 struct list_head dev_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500714};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800715
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800716struct se_hba {
717 u16 hba_tpgt;
718 u32 hba_id;
719 /* See hba_flags_table */
720 u32 hba_flags;
721 /* Virtual iSCSI devices attached. */
722 u32 dev_count;
723 u32 hba_index;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800724 /* Pointer to transport specific host structure. */
725 void *hba_ptr;
Andy Grovere3d6f902011-07-19 08:55:10 +0000726 struct list_head hba_node;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800727 spinlock_t device_lock;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800728 struct config_group hba_group;
729 struct mutex hba_access_mutex;
730 struct se_subsystem_api *transport;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500731};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800732
Nicholas Bellinger12d2338422011-03-14 04:06:11 -0700733struct se_port_stat_grps {
734 struct config_group stat_group;
735 struct config_group scsi_port_group;
736 struct config_group scsi_tgt_port_group;
737 struct config_group scsi_transport_group;
738};
739
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800740struct se_lun {
Nicholas Bellinger0ff87542012-12-04 23:43:57 -0800741#define SE_LUN_LINK_MAGIC 0xffff7771
742 u32 lun_link_magic;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800743 /* See transport_lun_status_table */
744 enum transport_lun_status_table lun_status;
745 u32 lun_access;
746 u32 lun_flags;
747 u32 unpacked_lun;
748 atomic_t lun_acl_count;
749 spinlock_t lun_acl_lock;
750 spinlock_t lun_cmd_lock;
751 spinlock_t lun_sep_lock;
752 struct completion lun_shutdown_comp;
753 struct list_head lun_cmd_list;
754 struct list_head lun_acl_list;
755 struct se_device *lun_se_dev;
Nicholas Bellinger12d2338422011-03-14 04:06:11 -0700756 struct se_port *lun_sep;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800757 struct config_group lun_group;
Nicholas Bellinger12d2338422011-03-14 04:06:11 -0700758 struct se_port_stat_grps port_stat_grps;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500759};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800760
Nicholas Bellingere89d15e2011-02-09 15:35:03 -0800761struct scsi_port_stats {
762 u64 cmd_pdus;
763 u64 tx_data_octets;
764 u64 rx_data_octets;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500765};
Nicholas Bellingere89d15e2011-02-09 15:35:03 -0800766
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800767struct se_port {
768 /* RELATIVE TARGET PORT IDENTIFER */
769 u16 sep_rtpi;
770 int sep_tg_pt_secondary_stat;
771 int sep_tg_pt_secondary_write_md;
772 u32 sep_index;
773 struct scsi_port_stats sep_stats;
774 /* Used for ALUA Target Port Groups membership */
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800775 atomic_t sep_tg_pt_secondary_offline;
776 /* Used for PR ALL_TG_PT=1 */
777 atomic_t sep_tg_pt_ref_cnt;
778 spinlock_t sep_alua_lock;
779 struct mutex sep_tg_pt_md_mutex;
780 struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
781 struct se_lun *sep_lun;
782 struct se_portal_group *sep_tpg;
783 struct list_head sep_alua_list;
784 struct list_head sep_list;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500785};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800786
787struct se_tpg_np {
Nicholas Bellinger1f6fe7c2011-02-09 15:34:54 -0800788 struct se_portal_group *tpg_np_parent;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800789 struct config_group tpg_np_group;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500790};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800791
792struct se_portal_group {
793 /* Type of target portal group, see transport_tpg_type_table */
794 enum transport_tpg_type_table se_tpg_type;
795 /* Number of ACLed Initiator Nodes for this TPG */
796 u32 num_node_acls;
797 /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
798 atomic_t tpg_pr_ref_count;
799 /* Spinlock for adding/removing ACLed Nodes */
800 spinlock_t acl_node_lock;
801 /* Spinlock for adding/removing sessions */
802 spinlock_t session_lock;
803 spinlock_t tpg_lun_lock;
804 /* Pointer to $FABRIC_MOD portal group */
805 void *se_tpg_fabric_ptr;
Andy Grovere3d6f902011-07-19 08:55:10 +0000806 struct list_head se_tpg_node;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800807 /* linked list for initiator ACL list */
808 struct list_head acl_node_list;
Jörn Engel4a5a75f2012-03-15 15:05:12 -0400809 struct se_lun **tpg_lun_list;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800810 struct se_lun tpg_virt_lun0;
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300811 /* List of TCM sessions associated wth this TPG */
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800812 struct list_head tpg_sess_list;
813 /* Pointer to $FABRIC_MOD dependent code */
814 struct target_core_fabric_ops *se_tpg_tfo;
815 struct se_wwn *se_tpg_wwn;
816 struct config_group tpg_group;
Nicholas Bellingere4b512e2013-06-19 18:37:00 -0700817 struct config_group *tpg_default_groups[7];
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800818 struct config_group tpg_lun_group;
819 struct config_group tpg_np_group;
820 struct config_group tpg_acl_group;
821 struct config_group tpg_attrib_group;
Nicholas Bellingere4b512e2013-06-19 18:37:00 -0700822 struct config_group tpg_auth_group;
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800823 struct config_group tpg_param_group;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500824};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800825
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800826struct se_wwn {
827 struct target_fabric_configfs *wwn_tf;
828 struct config_group wwn_group;
Nicholas Bellinger12d2338422011-03-14 04:06:11 -0700829 struct config_group *wwn_default_groups[2];
830 struct config_group fabric_stat_group;
Christoph Hellwige0a53e72011-11-29 03:29:38 -0500831};
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800832
Nicholas Bellingerc66ac9d2010-12-17 11:11:26 -0800833#endif /* TARGET_CORE_BASE_H */