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24#include <linux/module.h>
25#include <linux/moduleparam.h>
26#include <generated/utsrelease.h>
27#include <linux/utsname.h>
28#include <linux/init.h>
29#include <linux/fs.h>
30#include <linux/namei.h>
31#include <linux/slab.h>
32#include <linux/types.h>
33#include <linux/delay.h>
34#include <linux/unistd.h>
35#include <linux/string.h>
36#include <linux/parser.h>
37#include <linux/syscalls.h>
38#include <linux/configfs.h>
39#include <linux/spinlock.h>
40
41#include <target/target_core_base.h>
42#include <target/target_core_backend.h>
43#include <target/target_core_fabric.h>
44#include <target/target_core_fabric_configfs.h>
45#include <target/target_core_configfs.h>
46#include <target/configfs_macros.h>
47
48#include "target_core_internal.h"
49#include "target_core_alua.h"
50#include "target_core_pr.h"
51#include "target_core_rd.h"
52
53extern struct t10_alua_lu_gp *default_lu_gp;
54
55static LIST_HEAD(g_tf_list);
56static DEFINE_MUTEX(g_tf_lock);
57
58struct target_core_configfs_attribute {
59 struct configfs_attribute attr;
60 ssize_t (*show)(void *, char *);
61 ssize_t (*store)(void *, const char *, size_t);
62};
63
64static struct config_group target_core_hbagroup;
65static struct config_group alua_group;
66static struct config_group alua_lu_gps_group;
67
68static inline struct se_hba *
69item_to_hba(struct config_item *item)
70{
71 return container_of(to_config_group(item), struct se_hba, hba_group);
72}
73
74
75
76
77static ssize_t target_core_attr_show(struct config_item *item,
78 struct configfs_attribute *attr,
79 char *page)
80{
81 return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s"
82 " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION,
83 utsname()->sysname, utsname()->machine);
84}
85
86static struct configfs_item_operations target_core_fabric_item_ops = {
87 .show_attribute = target_core_attr_show,
88};
89
90static struct configfs_attribute target_core_item_attr_version = {
91 .ca_owner = THIS_MODULE,
92 .ca_name = "version",
93 .ca_mode = S_IRUGO,
94};
95
96static struct target_fabric_configfs *target_core_get_fabric(
97 const char *name)
98{
99 struct target_fabric_configfs *tf;
100
101 if (!name)
102 return NULL;
103
104 mutex_lock(&g_tf_lock);
105 list_for_each_entry(tf, &g_tf_list, tf_list) {
106 if (!strcmp(tf->tf_name, name)) {
107 atomic_inc(&tf->tf_access_cnt);
108 mutex_unlock(&g_tf_lock);
109 return tf;
110 }
111 }
112 mutex_unlock(&g_tf_lock);
113
114 return NULL;
115}
116
117
118
119
120static struct config_group *target_core_register_fabric(
121 struct config_group *group,
122 const char *name)
123{
124 struct target_fabric_configfs *tf;
125 int ret;
126
127 pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:"
128 " %s\n", group, name);
129
130
131
132
133
134
135
136
137
138
139 if (!strncmp(name, "iscsi", 5)) {
140
141
142
143
144
145
146 ret = request_module("iscsi_target_mod");
147 if (ret < 0) {
148 pr_err("request_module() failed for"
149 " iscsi_target_mod.ko: %d\n", ret);
150 return ERR_PTR(-EINVAL);
151 }
152 } else if (!strncmp(name, "loopback", 8)) {
153
154
155
156
157
158
159 ret = request_module("tcm_loop");
160 if (ret < 0) {
161 pr_err("request_module() failed for"
162 " tcm_loop.ko: %d\n", ret);
163 return ERR_PTR(-EINVAL);
164 }
165 }
166
167 tf = target_core_get_fabric(name);
168 if (!tf) {
169 pr_err("target_core_get_fabric() failed for %s\n",
170 name);
171 return ERR_PTR(-EINVAL);
172 }
173 pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:"
174 " %s\n", tf->tf_name);
175
176
177
178
179 pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n",
180 &TF_CIT_TMPL(tf)->tfc_wwn_cit);
181
182 tf->tf_group.default_groups = tf->tf_default_groups;
183 tf->tf_group.default_groups[0] = &tf->tf_disc_group;
184 tf->tf_group.default_groups[1] = NULL;
185
186 config_group_init_type_name(&tf->tf_group, name,
187 &TF_CIT_TMPL(tf)->tfc_wwn_cit);
188 config_group_init_type_name(&tf->tf_disc_group, "discovery_auth",
189 &TF_CIT_TMPL(tf)->tfc_discovery_cit);
190
191 pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:"
192 " %s\n", tf->tf_group.cg_item.ci_name);
193
194
195
196 tf->tf_ops.tf_subsys = tf->tf_subsys;
197 tf->tf_fabric = &tf->tf_group.cg_item;
198 pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric"
199 " for %s\n", name);
200
201 return &tf->tf_group;
202}
203
204
205
206
207static void target_core_deregister_fabric(
208 struct config_group *group,
209 struct config_item *item)
210{
211 struct target_fabric_configfs *tf = container_of(
212 to_config_group(item), struct target_fabric_configfs, tf_group);
213 struct config_group *tf_group;
214 struct config_item *df_item;
215 int i;
216
217 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in"
218 " tf list\n", config_item_name(item));
219
220 pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:"
221 " %s\n", tf->tf_name);
222 atomic_dec(&tf->tf_access_cnt);
223
224 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing"
225 " tf->tf_fabric for %s\n", tf->tf_name);
226 tf->tf_fabric = NULL;
227
228 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci"
229 " %s\n", config_item_name(item));
230
231 tf_group = &tf->tf_group;
232 for (i = 0; tf_group->default_groups[i]; i++) {
233 df_item = &tf_group->default_groups[i]->cg_item;
234 tf_group->default_groups[i] = NULL;
235 config_item_put(df_item);
236 }
237 config_item_put(item);
238}
239
240static struct configfs_group_operations target_core_fabric_group_ops = {
241 .make_group = &target_core_register_fabric,
242 .drop_item = &target_core_deregister_fabric,
243};
244
245
246
247
248static struct configfs_attribute *target_core_fabric_item_attrs[] = {
249 &target_core_item_attr_version,
250 NULL,
251};
252
253
254
255
256static struct config_item_type target_core_fabrics_item = {
257 .ct_item_ops = &target_core_fabric_item_ops,
258 .ct_group_ops = &target_core_fabric_group_ops,
259 .ct_attrs = target_core_fabric_item_attrs,
260 .ct_owner = THIS_MODULE,
261};
262
263static struct configfs_subsystem target_core_fabrics = {
264 .su_group = {
265 .cg_item = {
266 .ci_namebuf = "target",
267 .ci_type = &target_core_fabrics_item,
268 },
269 },
270};
271
272static struct configfs_subsystem *target_core_subsystem[] = {
273 &target_core_fabrics,
274 NULL,
275};
276
277
278
279
280
281
282
283
284
285
286
287
288
289struct target_fabric_configfs *target_fabric_configfs_init(
290 struct module *fabric_mod,
291 const char *name)
292{
293 struct target_fabric_configfs *tf;
294
295 if (!(name)) {
296 pr_err("Unable to locate passed fabric name\n");
297 return ERR_PTR(-EINVAL);
298 }
299 if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) {
300 pr_err("Passed name: %s exceeds TARGET_FABRIC"
301 "_NAME_SIZE\n", name);
302 return ERR_PTR(-EINVAL);
303 }
304
305 tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL);
306 if (!tf)
307 return ERR_PTR(-ENOMEM);
308
309 INIT_LIST_HEAD(&tf->tf_list);
310 atomic_set(&tf->tf_access_cnt, 0);
311
312
313
314
315 tf->tf_module = fabric_mod;
316 target_fabric_setup_cits(tf);
317
318 tf->tf_subsys = target_core_subsystem[0];
319 snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name);
320
321 mutex_lock(&g_tf_lock);
322 list_add_tail(&tf->tf_list, &g_tf_list);
323 mutex_unlock(&g_tf_lock);
324
325 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>"
326 ">>>>>>>>>>>>>>\n");
327 pr_debug("Initialized struct target_fabric_configfs: %p for"
328 " %s\n", tf, tf->tf_name);
329 return tf;
330}
331EXPORT_SYMBOL(target_fabric_configfs_init);
332
333
334
335
336void target_fabric_configfs_free(
337 struct target_fabric_configfs *tf)
338{
339 mutex_lock(&g_tf_lock);
340 list_del(&tf->tf_list);
341 mutex_unlock(&g_tf_lock);
342
343 kfree(tf);
344}
345EXPORT_SYMBOL(target_fabric_configfs_free);
346
347
348
349
350
351static int target_fabric_tf_ops_check(
352 struct target_fabric_configfs *tf)
353{
354 struct target_core_fabric_ops *tfo = &tf->tf_ops;
355
356 if (!tfo->get_fabric_name) {
357 pr_err("Missing tfo->get_fabric_name()\n");
358 return -EINVAL;
359 }
360 if (!tfo->get_fabric_proto_ident) {
361 pr_err("Missing tfo->get_fabric_proto_ident()\n");
362 return -EINVAL;
363 }
364 if (!tfo->tpg_get_wwn) {
365 pr_err("Missing tfo->tpg_get_wwn()\n");
366 return -EINVAL;
367 }
368 if (!tfo->tpg_get_tag) {
369 pr_err("Missing tfo->tpg_get_tag()\n");
370 return -EINVAL;
371 }
372 if (!tfo->tpg_get_default_depth) {
373 pr_err("Missing tfo->tpg_get_default_depth()\n");
374 return -EINVAL;
375 }
376 if (!tfo->tpg_get_pr_transport_id) {
377 pr_err("Missing tfo->tpg_get_pr_transport_id()\n");
378 return -EINVAL;
379 }
380 if (!tfo->tpg_get_pr_transport_id_len) {
381 pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n");
382 return -EINVAL;
383 }
384 if (!tfo->tpg_check_demo_mode) {
385 pr_err("Missing tfo->tpg_check_demo_mode()\n");
386 return -EINVAL;
387 }
388 if (!tfo->tpg_check_demo_mode_cache) {
389 pr_err("Missing tfo->tpg_check_demo_mode_cache()\n");
390 return -EINVAL;
391 }
392 if (!tfo->tpg_check_demo_mode_write_protect) {
393 pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n");
394 return -EINVAL;
395 }
396 if (!tfo->tpg_check_prod_mode_write_protect) {
397 pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n");
398 return -EINVAL;
399 }
400 if (!tfo->tpg_alloc_fabric_acl) {
401 pr_err("Missing tfo->tpg_alloc_fabric_acl()\n");
402 return -EINVAL;
403 }
404 if (!tfo->tpg_release_fabric_acl) {
405 pr_err("Missing tfo->tpg_release_fabric_acl()\n");
406 return -EINVAL;
407 }
408 if (!tfo->tpg_get_inst_index) {
409 pr_err("Missing tfo->tpg_get_inst_index()\n");
410 return -EINVAL;
411 }
412 if (!tfo->release_cmd) {
413 pr_err("Missing tfo->release_cmd()\n");
414 return -EINVAL;
415 }
416 if (!tfo->shutdown_session) {
417 pr_err("Missing tfo->shutdown_session()\n");
418 return -EINVAL;
419 }
420 if (!tfo->close_session) {
421 pr_err("Missing tfo->close_session()\n");
422 return -EINVAL;
423 }
424 if (!tfo->sess_get_index) {
425 pr_err("Missing tfo->sess_get_index()\n");
426 return -EINVAL;
427 }
428 if (!tfo->write_pending) {
429 pr_err("Missing tfo->write_pending()\n");
430 return -EINVAL;
431 }
432 if (!tfo->write_pending_status) {
433 pr_err("Missing tfo->write_pending_status()\n");
434 return -EINVAL;
435 }
436 if (!tfo->set_default_node_attributes) {
437 pr_err("Missing tfo->set_default_node_attributes()\n");
438 return -EINVAL;
439 }
440 if (!tfo->get_task_tag) {
441 pr_err("Missing tfo->get_task_tag()\n");
442 return -EINVAL;
443 }
444 if (!tfo->get_cmd_state) {
445 pr_err("Missing tfo->get_cmd_state()\n");
446 return -EINVAL;
447 }
448 if (!tfo->queue_data_in) {
449 pr_err("Missing tfo->queue_data_in()\n");
450 return -EINVAL;
451 }
452 if (!tfo->queue_status) {
453 pr_err("Missing tfo->queue_status()\n");
454 return -EINVAL;
455 }
456 if (!tfo->queue_tm_rsp) {
457 pr_err("Missing tfo->queue_tm_rsp()\n");
458 return -EINVAL;
459 }
460
461
462
463
464
465 if (!tfo->fabric_make_wwn) {
466 pr_err("Missing tfo->fabric_make_wwn()\n");
467 return -EINVAL;
468 }
469 if (!tfo->fabric_drop_wwn) {
470 pr_err("Missing tfo->fabric_drop_wwn()\n");
471 return -EINVAL;
472 }
473 if (!tfo->fabric_make_tpg) {
474 pr_err("Missing tfo->fabric_make_tpg()\n");
475 return -EINVAL;
476 }
477 if (!tfo->fabric_drop_tpg) {
478 pr_err("Missing tfo->fabric_drop_tpg()\n");
479 return -EINVAL;
480 }
481
482 return 0;
483}
484
485
486
487
488
489
490
491
492
493int target_fabric_configfs_register(
494 struct target_fabric_configfs *tf)
495{
496 int ret;
497
498 if (!tf) {
499 pr_err("Unable to locate target_fabric_configfs"
500 " pointer\n");
501 return -EINVAL;
502 }
503 if (!tf->tf_subsys) {
504 pr_err("Unable to target struct config_subsystem"
505 " pointer\n");
506 return -EINVAL;
507 }
508 ret = target_fabric_tf_ops_check(tf);
509 if (ret < 0)
510 return ret;
511
512 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>"
513 ">>>>>>>>>>\n");
514 return 0;
515}
516EXPORT_SYMBOL(target_fabric_configfs_register);
517
518void target_fabric_configfs_deregister(
519 struct target_fabric_configfs *tf)
520{
521 struct configfs_subsystem *su;
522
523 if (!tf) {
524 pr_err("Unable to locate passed target_fabric_"
525 "configfs\n");
526 return;
527 }
528 su = tf->tf_subsys;
529 if (!su) {
530 pr_err("Unable to locate passed tf->tf_subsys"
531 " pointer\n");
532 return;
533 }
534 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>"
535 ">>>>>>>>>>>>\n");
536 mutex_lock(&g_tf_lock);
537 if (atomic_read(&tf->tf_access_cnt)) {
538 mutex_unlock(&g_tf_lock);
539 pr_err("Non zero tf->tf_access_cnt for fabric %s\n",
540 tf->tf_name);
541 BUG();
542 }
543 list_del(&tf->tf_list);
544 mutex_unlock(&g_tf_lock);
545
546 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:"
547 " %s\n", tf->tf_name);
548 tf->tf_module = NULL;
549 tf->tf_subsys = NULL;
550 kfree(tf);
551
552 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>"
553 ">>>>>\n");
554}
555EXPORT_SYMBOL(target_fabric_configfs_deregister);
556
557
558
559
560
561
562
563#define DEF_DEV_ATTRIB_SHOW(_name) \
564static ssize_t target_core_dev_show_attr_##_name( \
565 struct se_dev_attrib *da, \
566 char *page) \
567{ \
568 struct se_device *dev; \
569 struct se_subsystem_dev *se_dev = da->da_sub_dev; \
570 ssize_t rb; \
571 \
572 spin_lock(&se_dev->se_dev_lock); \
573 dev = se_dev->se_dev_ptr; \
574 if (!dev) { \
575 spin_unlock(&se_dev->se_dev_lock); \
576 return -ENODEV; \
577 } \
578 rb = snprintf(page, PAGE_SIZE, "%u\n", \
579 (u32)dev->se_sub_dev->se_dev_attrib._name); \
580 spin_unlock(&se_dev->se_dev_lock); \
581 \
582 return rb; \
583}
584
585#define DEF_DEV_ATTRIB_STORE(_name) \
586static ssize_t target_core_dev_store_attr_##_name( \
587 struct se_dev_attrib *da, \
588 const char *page, \
589 size_t count) \
590{ \
591 struct se_device *dev; \
592 struct se_subsystem_dev *se_dev = da->da_sub_dev; \
593 unsigned long val; \
594 int ret; \
595 \
596 spin_lock(&se_dev->se_dev_lock); \
597 dev = se_dev->se_dev_ptr; \
598 if (!dev) { \
599 spin_unlock(&se_dev->se_dev_lock); \
600 return -ENODEV; \
601 } \
602 ret = strict_strtoul(page, 0, &val); \
603 if (ret < 0) { \
604 spin_unlock(&se_dev->se_dev_lock); \
605 pr_err("strict_strtoul() failed with" \
606 " ret: %d\n", ret); \
607 return -EINVAL; \
608 } \
609 ret = se_dev_set_##_name(dev, (u32)val); \
610 spin_unlock(&se_dev->se_dev_lock); \
611 \
612 return (!ret) ? count : -EINVAL; \
613}
614
615#define DEF_DEV_ATTRIB(_name) \
616DEF_DEV_ATTRIB_SHOW(_name); \
617DEF_DEV_ATTRIB_STORE(_name);
618
619#define DEF_DEV_ATTRIB_RO(_name) \
620DEF_DEV_ATTRIB_SHOW(_name);
621
622CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib);
623#define SE_DEV_ATTR(_name, _mode) \
624static struct target_core_dev_attrib_attribute \
625 target_core_dev_attrib_##_name = \
626 __CONFIGFS_EATTR(_name, _mode, \
627 target_core_dev_show_attr_##_name, \
628 target_core_dev_store_attr_##_name);
629
630#define SE_DEV_ATTR_RO(_name); \
631static struct target_core_dev_attrib_attribute \
632 target_core_dev_attrib_##_name = \
633 __CONFIGFS_EATTR_RO(_name, \
634 target_core_dev_show_attr_##_name);
635
636DEF_DEV_ATTRIB(emulate_dpo);
637SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR);
638
639DEF_DEV_ATTRIB(emulate_fua_write);
640SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR);
641
642DEF_DEV_ATTRIB(emulate_fua_read);
643SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR);
644
645DEF_DEV_ATTRIB(emulate_write_cache);
646SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR);
647
648DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl);
649SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR);
650
651DEF_DEV_ATTRIB(emulate_tas);
652SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR);
653
654DEF_DEV_ATTRIB(emulate_tpu);
655SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR);
656
657DEF_DEV_ATTRIB(emulate_tpws);
658SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR);
659
660DEF_DEV_ATTRIB(enforce_pr_isids);
661SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR);
662
663DEF_DEV_ATTRIB(is_nonrot);
664SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR);
665
666DEF_DEV_ATTRIB(emulate_rest_reord);
667SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR);
668
669DEF_DEV_ATTRIB_RO(hw_block_size);
670SE_DEV_ATTR_RO(hw_block_size);
671
672DEF_DEV_ATTRIB(block_size);
673SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR);
674
675DEF_DEV_ATTRIB_RO(hw_max_sectors);
676SE_DEV_ATTR_RO(hw_max_sectors);
677
678DEF_DEV_ATTRIB(fabric_max_sectors);
679SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR);
680
681DEF_DEV_ATTRIB(optimal_sectors);
682SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR);
683
684DEF_DEV_ATTRIB_RO(hw_queue_depth);
685SE_DEV_ATTR_RO(hw_queue_depth);
686
687DEF_DEV_ATTRIB(queue_depth);
688SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR);
689
690DEF_DEV_ATTRIB(max_unmap_lba_count);
691SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR);
692
693DEF_DEV_ATTRIB(max_unmap_block_desc_count);
694SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR);
695
696DEF_DEV_ATTRIB(unmap_granularity);
697SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR);
698
699DEF_DEV_ATTRIB(unmap_granularity_alignment);
700SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR);
701
702CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group);
703
704static struct configfs_attribute *target_core_dev_attrib_attrs[] = {
705 &target_core_dev_attrib_emulate_dpo.attr,
706 &target_core_dev_attrib_emulate_fua_write.attr,
707 &target_core_dev_attrib_emulate_fua_read.attr,
708 &target_core_dev_attrib_emulate_write_cache.attr,
709 &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr,
710 &target_core_dev_attrib_emulate_tas.attr,
711 &target_core_dev_attrib_emulate_tpu.attr,
712 &target_core_dev_attrib_emulate_tpws.attr,
713 &target_core_dev_attrib_enforce_pr_isids.attr,
714 &target_core_dev_attrib_is_nonrot.attr,
715 &target_core_dev_attrib_emulate_rest_reord.attr,
716 &target_core_dev_attrib_hw_block_size.attr,
717 &target_core_dev_attrib_block_size.attr,
718 &target_core_dev_attrib_hw_max_sectors.attr,
719 &target_core_dev_attrib_fabric_max_sectors.attr,
720 &target_core_dev_attrib_optimal_sectors.attr,
721 &target_core_dev_attrib_hw_queue_depth.attr,
722 &target_core_dev_attrib_queue_depth.attr,
723 &target_core_dev_attrib_max_unmap_lba_count.attr,
724 &target_core_dev_attrib_max_unmap_block_desc_count.attr,
725 &target_core_dev_attrib_unmap_granularity.attr,
726 &target_core_dev_attrib_unmap_granularity_alignment.attr,
727 NULL,
728};
729
730static struct configfs_item_operations target_core_dev_attrib_ops = {
731 .show_attribute = target_core_dev_attrib_attr_show,
732 .store_attribute = target_core_dev_attrib_attr_store,
733};
734
735static struct config_item_type target_core_dev_attrib_cit = {
736 .ct_item_ops = &target_core_dev_attrib_ops,
737 .ct_attrs = target_core_dev_attrib_attrs,
738 .ct_owner = THIS_MODULE,
739};
740
741
742
743
744
745CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn);
746#define SE_DEV_WWN_ATTR(_name, _mode) \
747static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \
748 __CONFIGFS_EATTR(_name, _mode, \
749 target_core_dev_wwn_show_attr_##_name, \
750 target_core_dev_wwn_store_attr_##_name);
751
752#define SE_DEV_WWN_ATTR_RO(_name); \
753do { \
754 static struct target_core_dev_wwn_attribute \
755 target_core_dev_wwn_##_name = \
756 __CONFIGFS_EATTR_RO(_name, \
757 target_core_dev_wwn_show_attr_##_name); \
758} while (0);
759
760
761
762
763static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial(
764 struct t10_wwn *t10_wwn,
765 char *page)
766{
767 struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev;
768 struct se_device *dev;
769
770 dev = se_dev->se_dev_ptr;
771 if (!dev)
772 return -ENODEV;
773
774 return sprintf(page, "T10 VPD Unit Serial Number: %s\n",
775 &t10_wwn->unit_serial[0]);
776}
777
778static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial(
779 struct t10_wwn *t10_wwn,
780 const char *page,
781 size_t count)
782{
783 struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev;
784 struct se_device *dev;
785 unsigned char buf[INQUIRY_VPD_SERIAL_LEN];
786
787
788
789
790
791
792
793
794
795
796
797 if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) {
798 pr_err("Underlying SCSI device firmware provided VPD"
799 " Unit Serial, ignoring request\n");
800 return -EOPNOTSUPP;
801 }
802
803 if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) {
804 pr_err("Emulated VPD Unit Serial exceeds"
805 " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN);
806 return -EOVERFLOW;
807 }
808
809
810
811
812
813
814 dev = su_dev->se_dev_ptr;
815 if (dev) {
816 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
817 pr_err("Unable to set VPD Unit Serial while"
818 " active %d $FABRIC_MOD exports exist\n",
819 atomic_read(&dev->dev_export_obj.obj_access_count));
820 return -EINVAL;
821 }
822 }
823
824
825
826
827
828
829 memset(buf, 0, INQUIRY_VPD_SERIAL_LEN);
830 snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page);
831 snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN,
832 "%s", strstrip(buf));
833 su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL;
834
835 pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:"
836 " %s\n", su_dev->t10_wwn.unit_serial);
837
838 return count;
839}
840
841SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR);
842
843
844
845
846static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier(
847 struct t10_wwn *t10_wwn,
848 char *page)
849{
850 struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev;
851 struct se_device *dev;
852 struct t10_vpd *vpd;
853 unsigned char buf[VPD_TMP_BUF_SIZE];
854 ssize_t len = 0;
855
856 dev = se_dev->se_dev_ptr;
857 if (!dev)
858 return -ENODEV;
859
860 memset(buf, 0, VPD_TMP_BUF_SIZE);
861
862 spin_lock(&t10_wwn->t10_vpd_lock);
863 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) {
864 if (!vpd->protocol_identifier_set)
865 continue;
866
867 transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE);
868
869 if (len + strlen(buf) >= PAGE_SIZE)
870 break;
871
872 len += sprintf(page+len, "%s", buf);
873 }
874 spin_unlock(&t10_wwn->t10_vpd_lock);
875
876 return len;
877}
878
879static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier(
880 struct t10_wwn *t10_wwn,
881 const char *page,
882 size_t count)
883{
884 return -ENOSYS;
885}
886
887SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR);
888
889
890
891
892#define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \
893static ssize_t target_core_dev_wwn_show_attr_##_name( \
894 struct t10_wwn *t10_wwn, \
895 char *page) \
896{ \
897 struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \
898 struct se_device *dev; \
899 struct t10_vpd *vpd; \
900 unsigned char buf[VPD_TMP_BUF_SIZE]; \
901 ssize_t len = 0; \
902 \
903 dev = se_dev->se_dev_ptr; \
904 if (!dev) \
905 return -ENODEV; \
906 \
907 spin_lock(&t10_wwn->t10_vpd_lock); \
908 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \
909 if (vpd->association != _assoc) \
910 continue; \
911 \
912 memset(buf, 0, VPD_TMP_BUF_SIZE); \
913 transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \
914 if (len + strlen(buf) >= PAGE_SIZE) \
915 break; \
916 len += sprintf(page+len, "%s", buf); \
917 \
918 memset(buf, 0, VPD_TMP_BUF_SIZE); \
919 transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \
920 if (len + strlen(buf) >= PAGE_SIZE) \
921 break; \
922 len += sprintf(page+len, "%s", buf); \
923 \
924 memset(buf, 0, VPD_TMP_BUF_SIZE); \
925 transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \
926 if (len + strlen(buf) >= PAGE_SIZE) \
927 break; \
928 len += sprintf(page+len, "%s", buf); \
929 } \
930 spin_unlock(&t10_wwn->t10_vpd_lock); \
931 \
932 return len; \
933}
934
935
936
937
938DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00);
939
940static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit(
941 struct t10_wwn *t10_wwn,
942 const char *page,
943 size_t count)
944{
945 return -ENOSYS;
946}
947
948SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR);
949
950
951
952
953DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10);
954
955static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port(
956 struct t10_wwn *t10_wwn,
957 const char *page,
958 size_t count)
959{
960 return -ENOSYS;
961}
962
963SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR);
964
965
966
967
968DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20);
969
970static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device(
971 struct t10_wwn *t10_wwn,
972 const char *page,
973 size_t count)
974{
975 return -ENOSYS;
976}
977
978SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR);
979
980CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group);
981
982static struct configfs_attribute *target_core_dev_wwn_attrs[] = {
983 &target_core_dev_wwn_vpd_unit_serial.attr,
984 &target_core_dev_wwn_vpd_protocol_identifier.attr,
985 &target_core_dev_wwn_vpd_assoc_logical_unit.attr,
986 &target_core_dev_wwn_vpd_assoc_target_port.attr,
987 &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr,
988 NULL,
989};
990
991static struct configfs_item_operations target_core_dev_wwn_ops = {
992 .show_attribute = target_core_dev_wwn_attr_show,
993 .store_attribute = target_core_dev_wwn_attr_store,
994};
995
996static struct config_item_type target_core_dev_wwn_cit = {
997 .ct_item_ops = &target_core_dev_wwn_ops,
998 .ct_attrs = target_core_dev_wwn_attrs,
999 .ct_owner = THIS_MODULE,
1000};
1001
1002
1003
1004
1005
1006CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev);
1007#define SE_DEV_PR_ATTR(_name, _mode) \
1008static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \
1009 __CONFIGFS_EATTR(_name, _mode, \
1010 target_core_dev_pr_show_attr_##_name, \
1011 target_core_dev_pr_store_attr_##_name);
1012
1013#define SE_DEV_PR_ATTR_RO(_name); \
1014static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \
1015 __CONFIGFS_EATTR_RO(_name, \
1016 target_core_dev_pr_show_attr_##_name);
1017
1018
1019
1020
1021static ssize_t target_core_dev_pr_show_spc3_res(
1022 struct se_device *dev,
1023 char *page,
1024 ssize_t *len)
1025{
1026 struct se_node_acl *se_nacl;
1027 struct t10_pr_registration *pr_reg;
1028 char i_buf[PR_REG_ISID_ID_LEN];
1029 int prf_isid;
1030
1031 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1032
1033 spin_lock(&dev->dev_reservation_lock);
1034 pr_reg = dev->dev_pr_res_holder;
1035 if (!pr_reg) {
1036 *len += sprintf(page + *len, "No SPC-3 Reservation holder\n");
1037 spin_unlock(&dev->dev_reservation_lock);
1038 return *len;
1039 }
1040 se_nacl = pr_reg->pr_reg_nacl;
1041 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
1042 PR_REG_ISID_ID_LEN);
1043
1044 *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n",
1045 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
1046 se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : "");
1047 spin_unlock(&dev->dev_reservation_lock);
1048
1049 return *len;
1050}
1051
1052static ssize_t target_core_dev_pr_show_spc2_res(
1053 struct se_device *dev,
1054 char *page,
1055 ssize_t *len)
1056{
1057 struct se_node_acl *se_nacl;
1058
1059 spin_lock(&dev->dev_reservation_lock);
1060 se_nacl = dev->dev_reserved_node_acl;
1061 if (!se_nacl) {
1062 *len += sprintf(page + *len, "No SPC-2 Reservation holder\n");
1063 spin_unlock(&dev->dev_reservation_lock);
1064 return *len;
1065 }
1066 *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n",
1067 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
1068 se_nacl->initiatorname);
1069 spin_unlock(&dev->dev_reservation_lock);
1070
1071 return *len;
1072}
1073
1074static ssize_t target_core_dev_pr_show_attr_res_holder(
1075 struct se_subsystem_dev *su_dev,
1076 char *page)
1077{
1078 ssize_t len = 0;
1079
1080 if (!su_dev->se_dev_ptr)
1081 return -ENODEV;
1082
1083 switch (su_dev->t10_pr.res_type) {
1084 case SPC3_PERSISTENT_RESERVATIONS:
1085 target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr,
1086 page, &len);
1087 break;
1088 case SPC2_RESERVATIONS:
1089 target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr,
1090 page, &len);
1091 break;
1092 case SPC_PASSTHROUGH:
1093 len += sprintf(page+len, "Passthrough\n");
1094 break;
1095 default:
1096 len += sprintf(page+len, "Unknown\n");
1097 break;
1098 }
1099
1100 return len;
1101}
1102
1103SE_DEV_PR_ATTR_RO(res_holder);
1104
1105
1106
1107
1108static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts(
1109 struct se_subsystem_dev *su_dev,
1110 char *page)
1111{
1112 struct se_device *dev;
1113 struct t10_pr_registration *pr_reg;
1114 ssize_t len = 0;
1115
1116 dev = su_dev->se_dev_ptr;
1117 if (!dev)
1118 return -ENODEV;
1119
1120 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1121 return len;
1122
1123 spin_lock(&dev->dev_reservation_lock);
1124 pr_reg = dev->dev_pr_res_holder;
1125 if (!pr_reg) {
1126 len = sprintf(page, "No SPC-3 Reservation holder\n");
1127 spin_unlock(&dev->dev_reservation_lock);
1128 return len;
1129 }
1130
1131
1132
1133
1134 if (pr_reg->pr_reg_all_tg_pt)
1135 len = sprintf(page, "SPC-3 Reservation: All Target"
1136 " Ports registration\n");
1137 else
1138 len = sprintf(page, "SPC-3 Reservation: Single"
1139 " Target Port registration\n");
1140 spin_unlock(&dev->dev_reservation_lock);
1141
1142 return len;
1143}
1144
1145SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts);
1146
1147
1148
1149
1150static ssize_t target_core_dev_pr_show_attr_res_pr_generation(
1151 struct se_subsystem_dev *su_dev,
1152 char *page)
1153{
1154 if (!su_dev->se_dev_ptr)
1155 return -ENODEV;
1156
1157 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1158 return 0;
1159
1160 return sprintf(page, "0x%08x\n", su_dev->t10_pr.pr_generation);
1161}
1162
1163SE_DEV_PR_ATTR_RO(res_pr_generation);
1164
1165
1166
1167
1168static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port(
1169 struct se_subsystem_dev *su_dev,
1170 char *page)
1171{
1172 struct se_device *dev;
1173 struct se_node_acl *se_nacl;
1174 struct se_lun *lun;
1175 struct se_portal_group *se_tpg;
1176 struct t10_pr_registration *pr_reg;
1177 struct target_core_fabric_ops *tfo;
1178 ssize_t len = 0;
1179
1180 dev = su_dev->se_dev_ptr;
1181 if (!dev)
1182 return -ENODEV;
1183
1184 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1185 return len;
1186
1187 spin_lock(&dev->dev_reservation_lock);
1188 pr_reg = dev->dev_pr_res_holder;
1189 if (!pr_reg) {
1190 len = sprintf(page, "No SPC-3 Reservation holder\n");
1191 spin_unlock(&dev->dev_reservation_lock);
1192 return len;
1193 }
1194 se_nacl = pr_reg->pr_reg_nacl;
1195 se_tpg = se_nacl->se_tpg;
1196 lun = pr_reg->pr_reg_tg_pt_lun;
1197 tfo = se_tpg->se_tpg_tfo;
1198
1199 len += sprintf(page+len, "SPC-3 Reservation: %s"
1200 " Target Node Endpoint: %s\n", tfo->get_fabric_name(),
1201 tfo->tpg_get_wwn(se_tpg));
1202 len += sprintf(page+len, "SPC-3 Reservation: Relative Port"
1203 " Identifier Tag: %hu %s Portal Group Tag: %hu"
1204 " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi,
1205 tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg),
1206 tfo->get_fabric_name(), lun->unpacked_lun);
1207 spin_unlock(&dev->dev_reservation_lock);
1208
1209 return len;
1210}
1211
1212SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port);
1213
1214
1215
1216
1217static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts(
1218 struct se_subsystem_dev *su_dev,
1219 char *page)
1220{
1221 struct target_core_fabric_ops *tfo;
1222 struct t10_pr_registration *pr_reg;
1223 unsigned char buf[384];
1224 char i_buf[PR_REG_ISID_ID_LEN];
1225 ssize_t len = 0;
1226 int reg_count = 0, prf_isid;
1227
1228 if (!su_dev->se_dev_ptr)
1229 return -ENODEV;
1230
1231 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1232 return len;
1233
1234 len += sprintf(page+len, "SPC-3 PR Registrations:\n");
1235
1236 spin_lock(&su_dev->t10_pr.registration_lock);
1237 list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list,
1238 pr_reg_list) {
1239
1240 memset(buf, 0, 384);
1241 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1242 tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
1243 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
1244 PR_REG_ISID_ID_LEN);
1245 sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n",
1246 tfo->get_fabric_name(),
1247 pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ?
1248 &i_buf[0] : "", pr_reg->pr_res_key,
1249 pr_reg->pr_res_generation);
1250
1251 if (len + strlen(buf) >= PAGE_SIZE)
1252 break;
1253
1254 len += sprintf(page+len, "%s", buf);
1255 reg_count++;
1256 }
1257 spin_unlock(&su_dev->t10_pr.registration_lock);
1258
1259 if (!reg_count)
1260 len += sprintf(page+len, "None\n");
1261
1262 return len;
1263}
1264
1265SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts);
1266
1267
1268
1269
1270static ssize_t target_core_dev_pr_show_attr_res_pr_type(
1271 struct se_subsystem_dev *su_dev,
1272 char *page)
1273{
1274 struct se_device *dev;
1275 struct t10_pr_registration *pr_reg;
1276 ssize_t len = 0;
1277
1278 dev = su_dev->se_dev_ptr;
1279 if (!dev)
1280 return -ENODEV;
1281
1282 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1283 return len;
1284
1285 spin_lock(&dev->dev_reservation_lock);
1286 pr_reg = dev->dev_pr_res_holder;
1287 if (!pr_reg) {
1288 len = sprintf(page, "No SPC-3 Reservation holder\n");
1289 spin_unlock(&dev->dev_reservation_lock);
1290 return len;
1291 }
1292 len = sprintf(page, "SPC-3 Reservation Type: %s\n",
1293 core_scsi3_pr_dump_type(pr_reg->pr_res_type));
1294 spin_unlock(&dev->dev_reservation_lock);
1295
1296 return len;
1297}
1298
1299SE_DEV_PR_ATTR_RO(res_pr_type);
1300
1301
1302
1303
1304static ssize_t target_core_dev_pr_show_attr_res_type(
1305 struct se_subsystem_dev *su_dev,
1306 char *page)
1307{
1308 ssize_t len = 0;
1309
1310 if (!su_dev->se_dev_ptr)
1311 return -ENODEV;
1312
1313 switch (su_dev->t10_pr.res_type) {
1314 case SPC3_PERSISTENT_RESERVATIONS:
1315 len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n");
1316 break;
1317 case SPC2_RESERVATIONS:
1318 len = sprintf(page, "SPC2_RESERVATIONS\n");
1319 break;
1320 case SPC_PASSTHROUGH:
1321 len = sprintf(page, "SPC_PASSTHROUGH\n");
1322 break;
1323 default:
1324 len = sprintf(page, "UNKNOWN\n");
1325 break;
1326 }
1327
1328 return len;
1329}
1330
1331SE_DEV_PR_ATTR_RO(res_type);
1332
1333
1334
1335
1336
1337static ssize_t target_core_dev_pr_show_attr_res_aptpl_active(
1338 struct se_subsystem_dev *su_dev,
1339 char *page)
1340{
1341 if (!su_dev->se_dev_ptr)
1342 return -ENODEV;
1343
1344 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1345 return 0;
1346
1347 return sprintf(page, "APTPL Bit Status: %s\n",
1348 (su_dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled");
1349}
1350
1351SE_DEV_PR_ATTR_RO(res_aptpl_active);
1352
1353
1354
1355
1356static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata(
1357 struct se_subsystem_dev *su_dev,
1358 char *page)
1359{
1360 if (!su_dev->se_dev_ptr)
1361 return -ENODEV;
1362
1363 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1364 return 0;
1365
1366 return sprintf(page, "Ready to process PR APTPL metadata..\n");
1367}
1368
1369enum {
1370 Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid,
1371 Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope,
1372 Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric,
1373 Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err
1374};
1375
1376static match_table_t tokens = {
1377 {Opt_initiator_fabric, "initiator_fabric=%s"},
1378 {Opt_initiator_node, "initiator_node=%s"},
1379 {Opt_initiator_sid, "initiator_sid=%s"},
1380 {Opt_sa_res_key, "sa_res_key=%s"},
1381 {Opt_res_holder, "res_holder=%d"},
1382 {Opt_res_type, "res_type=%d"},
1383 {Opt_res_scope, "res_scope=%d"},
1384 {Opt_res_all_tg_pt, "res_all_tg_pt=%d"},
1385 {Opt_mapped_lun, "mapped_lun=%d"},
1386 {Opt_target_fabric, "target_fabric=%s"},
1387 {Opt_target_node, "target_node=%s"},
1388 {Opt_tpgt, "tpgt=%d"},
1389 {Opt_port_rtpi, "port_rtpi=%d"},
1390 {Opt_target_lun, "target_lun=%d"},
1391 {Opt_err, NULL}
1392};
1393
1394static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
1395 struct se_subsystem_dev *su_dev,
1396 const char *page,
1397 size_t count)
1398{
1399 struct se_device *dev;
1400 unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL;
1401 unsigned char *t_fabric = NULL, *t_port = NULL;
1402 char *orig, *ptr, *arg_p, *opts;
1403 substring_t args[MAX_OPT_ARGS];
1404 unsigned long long tmp_ll;
1405 u64 sa_res_key = 0;
1406 u32 mapped_lun = 0, target_lun = 0;
1407 int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token;
1408 u16 port_rpti = 0, tpgt = 0;
1409 u8 type = 0, scope;
1410
1411 dev = su_dev->se_dev_ptr;
1412 if (!dev)
1413 return -ENODEV;
1414
1415 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1416 return 0;
1417
1418 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1419 pr_debug("Unable to process APTPL metadata while"
1420 " active fabric exports exist\n");
1421 return -EINVAL;
1422 }
1423
1424 opts = kstrdup(page, GFP_KERNEL);
1425 if (!opts)
1426 return -ENOMEM;
1427
1428 orig = opts;
1429 while ((ptr = strsep(&opts, ",\n")) != NULL) {
1430 if (!*ptr)
1431 continue;
1432
1433 token = match_token(ptr, tokens, args);
1434 switch (token) {
1435 case Opt_initiator_fabric:
1436 i_fabric = match_strdup(&args[0]);
1437 if (!i_fabric) {
1438 ret = -ENOMEM;
1439 goto out;
1440 }
1441 break;
1442 case Opt_initiator_node:
1443 i_port = match_strdup(&args[0]);
1444 if (!i_port) {
1445 ret = -ENOMEM;
1446 goto out;
1447 }
1448 if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) {
1449 pr_err("APTPL metadata initiator_node="
1450 " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n",
1451 PR_APTPL_MAX_IPORT_LEN);
1452 ret = -EINVAL;
1453 break;
1454 }
1455 break;
1456 case Opt_initiator_sid:
1457 isid = match_strdup(&args[0]);
1458 if (!isid) {
1459 ret = -ENOMEM;
1460 goto out;
1461 }
1462 if (strlen(isid) >= PR_REG_ISID_LEN) {
1463 pr_err("APTPL metadata initiator_isid"
1464 "= exceeds PR_REG_ISID_LEN: %d\n",
1465 PR_REG_ISID_LEN);
1466 ret = -EINVAL;
1467 break;
1468 }
1469 break;
1470 case Opt_sa_res_key:
1471 arg_p = match_strdup(&args[0]);
1472 if (!arg_p) {
1473 ret = -ENOMEM;
1474 goto out;
1475 }
1476 ret = strict_strtoull(arg_p, 0, &tmp_ll);
1477 if (ret < 0) {
1478 pr_err("strict_strtoull() failed for"
1479 " sa_res_key=\n");
1480 goto out;
1481 }
1482 sa_res_key = (u64)tmp_ll;
1483 break;
1484
1485
1486
1487 case Opt_res_holder:
1488 match_int(args, &arg);
1489 res_holder = arg;
1490 break;
1491 case Opt_res_type:
1492 match_int(args, &arg);
1493 type = (u8)arg;
1494 break;
1495 case Opt_res_scope:
1496 match_int(args, &arg);
1497 scope = (u8)arg;
1498 break;
1499 case Opt_res_all_tg_pt:
1500 match_int(args, &arg);
1501 all_tg_pt = (int)arg;
1502 break;
1503 case Opt_mapped_lun:
1504 match_int(args, &arg);
1505 mapped_lun = (u32)arg;
1506 break;
1507
1508
1509
1510 case Opt_target_fabric:
1511 t_fabric = match_strdup(&args[0]);
1512 if (!t_fabric) {
1513 ret = -ENOMEM;
1514 goto out;
1515 }
1516 break;
1517 case Opt_target_node:
1518 t_port = match_strdup(&args[0]);
1519 if (!t_port) {
1520 ret = -ENOMEM;
1521 goto out;
1522 }
1523 if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) {
1524 pr_err("APTPL metadata target_node="
1525 " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n",
1526 PR_APTPL_MAX_TPORT_LEN);
1527 ret = -EINVAL;
1528 break;
1529 }
1530 break;
1531 case Opt_tpgt:
1532 match_int(args, &arg);
1533 tpgt = (u16)arg;
1534 break;
1535 case Opt_port_rtpi:
1536 match_int(args, &arg);
1537 port_rpti = (u16)arg;
1538 break;
1539 case Opt_target_lun:
1540 match_int(args, &arg);
1541 target_lun = (u32)arg;
1542 break;
1543 default:
1544 break;
1545 }
1546 }
1547
1548 if (!i_port || !t_port || !sa_res_key) {
1549 pr_err("Illegal parameters for APTPL registration\n");
1550 ret = -EINVAL;
1551 goto out;
1552 }
1553
1554 if (res_holder && !(type)) {
1555 pr_err("Illegal PR type: 0x%02x for reservation"
1556 " holder\n", type);
1557 ret = -EINVAL;
1558 goto out;
1559 }
1560
1561 ret = core_scsi3_alloc_aptpl_registration(&su_dev->t10_pr, sa_res_key,
1562 i_port, isid, mapped_lun, t_port, tpgt, target_lun,
1563 res_holder, all_tg_pt, type);
1564out:
1565 kfree(i_fabric);
1566 kfree(i_port);
1567 kfree(isid);
1568 kfree(t_fabric);
1569 kfree(t_port);
1570 kfree(orig);
1571 return (ret == 0) ? count : ret;
1572}
1573
1574SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR);
1575
1576CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group);
1577
1578static struct configfs_attribute *target_core_dev_pr_attrs[] = {
1579 &target_core_dev_pr_res_holder.attr,
1580 &target_core_dev_pr_res_pr_all_tgt_pts.attr,
1581 &target_core_dev_pr_res_pr_generation.attr,
1582 &target_core_dev_pr_res_pr_holder_tg_port.attr,
1583 &target_core_dev_pr_res_pr_registered_i_pts.attr,
1584 &target_core_dev_pr_res_pr_type.attr,
1585 &target_core_dev_pr_res_type.attr,
1586 &target_core_dev_pr_res_aptpl_active.attr,
1587 &target_core_dev_pr_res_aptpl_metadata.attr,
1588 NULL,
1589};
1590
1591static struct configfs_item_operations target_core_dev_pr_ops = {
1592 .show_attribute = target_core_dev_pr_attr_show,
1593 .store_attribute = target_core_dev_pr_attr_store,
1594};
1595
1596static struct config_item_type target_core_dev_pr_cit = {
1597 .ct_item_ops = &target_core_dev_pr_ops,
1598 .ct_attrs = target_core_dev_pr_attrs,
1599 .ct_owner = THIS_MODULE,
1600};
1601
1602
1603
1604
1605
1606static ssize_t target_core_show_dev_info(void *p, char *page)
1607{
1608 struct se_subsystem_dev *se_dev = p;
1609 struct se_hba *hba = se_dev->se_dev_hba;
1610 struct se_subsystem_api *t = hba->transport;
1611 int bl = 0;
1612 ssize_t read_bytes = 0;
1613
1614 if (!se_dev->se_dev_ptr)
1615 return -ENODEV;
1616
1617 transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl);
1618 read_bytes += bl;
1619 read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes);
1620 return read_bytes;
1621}
1622
1623static struct target_core_configfs_attribute target_core_attr_dev_info = {
1624 .attr = { .ca_owner = THIS_MODULE,
1625 .ca_name = "info",
1626 .ca_mode = S_IRUGO },
1627 .show = target_core_show_dev_info,
1628 .store = NULL,
1629};
1630
1631static ssize_t target_core_store_dev_control(
1632 void *p,
1633 const char *page,
1634 size_t count)
1635{
1636 struct se_subsystem_dev *se_dev = p;
1637 struct se_hba *hba = se_dev->se_dev_hba;
1638 struct se_subsystem_api *t = hba->transport;
1639
1640 if (!se_dev->se_dev_su_ptr) {
1641 pr_err("Unable to locate struct se_subsystem_dev>se"
1642 "_dev_su_ptr\n");
1643 return -EINVAL;
1644 }
1645
1646 return t->set_configfs_dev_params(hba, se_dev, page, count);
1647}
1648
1649static struct target_core_configfs_attribute target_core_attr_dev_control = {
1650 .attr = { .ca_owner = THIS_MODULE,
1651 .ca_name = "control",
1652 .ca_mode = S_IWUSR },
1653 .show = NULL,
1654 .store = target_core_store_dev_control,
1655};
1656
1657static ssize_t target_core_show_dev_alias(void *p, char *page)
1658{
1659 struct se_subsystem_dev *se_dev = p;
1660
1661 if (!(se_dev->su_dev_flags & SDF_USING_ALIAS))
1662 return 0;
1663
1664 return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias);
1665}
1666
1667static ssize_t target_core_store_dev_alias(
1668 void *p,
1669 const char *page,
1670 size_t count)
1671{
1672 struct se_subsystem_dev *se_dev = p;
1673 struct se_hba *hba = se_dev->se_dev_hba;
1674 ssize_t read_bytes;
1675
1676 if (count > (SE_DEV_ALIAS_LEN-1)) {
1677 pr_err("alias count: %d exceeds"
1678 " SE_DEV_ALIAS_LEN-1: %u\n", (int)count,
1679 SE_DEV_ALIAS_LEN-1);
1680 return -EINVAL;
1681 }
1682
1683 read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN,
1684 "%s", page);
1685 if (!read_bytes)
1686 return -EINVAL;
1687 if (se_dev->se_dev_alias[read_bytes - 1] == '\n')
1688 se_dev->se_dev_alias[read_bytes - 1] = '\0';
1689
1690 se_dev->su_dev_flags |= SDF_USING_ALIAS;
1691
1692 pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n",
1693 config_item_name(&hba->hba_group.cg_item),
1694 config_item_name(&se_dev->se_dev_group.cg_item),
1695 se_dev->se_dev_alias);
1696
1697 return read_bytes;
1698}
1699
1700static struct target_core_configfs_attribute target_core_attr_dev_alias = {
1701 .attr = { .ca_owner = THIS_MODULE,
1702 .ca_name = "alias",
1703 .ca_mode = S_IRUGO | S_IWUSR },
1704 .show = target_core_show_dev_alias,
1705 .store = target_core_store_dev_alias,
1706};
1707
1708static ssize_t target_core_show_dev_udev_path(void *p, char *page)
1709{
1710 struct se_subsystem_dev *se_dev = p;
1711
1712 if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH))
1713 return 0;
1714
1715 return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path);
1716}
1717
1718static ssize_t target_core_store_dev_udev_path(
1719 void *p,
1720 const char *page,
1721 size_t count)
1722{
1723 struct se_subsystem_dev *se_dev = p;
1724 struct se_hba *hba = se_dev->se_dev_hba;
1725 ssize_t read_bytes;
1726
1727 if (count > (SE_UDEV_PATH_LEN-1)) {
1728 pr_err("udev_path count: %d exceeds"
1729 " SE_UDEV_PATH_LEN-1: %u\n", (int)count,
1730 SE_UDEV_PATH_LEN-1);
1731 return -EINVAL;
1732 }
1733
1734 read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN,
1735 "%s", page);
1736 if (!read_bytes)
1737 return -EINVAL;
1738 if (se_dev->se_dev_udev_path[read_bytes - 1] == '\n')
1739 se_dev->se_dev_udev_path[read_bytes - 1] = '\0';
1740
1741 se_dev->su_dev_flags |= SDF_USING_UDEV_PATH;
1742
1743 pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n",
1744 config_item_name(&hba->hba_group.cg_item),
1745 config_item_name(&se_dev->se_dev_group.cg_item),
1746 se_dev->se_dev_udev_path);
1747
1748 return read_bytes;
1749}
1750
1751static struct target_core_configfs_attribute target_core_attr_dev_udev_path = {
1752 .attr = { .ca_owner = THIS_MODULE,
1753 .ca_name = "udev_path",
1754 .ca_mode = S_IRUGO | S_IWUSR },
1755 .show = target_core_show_dev_udev_path,
1756 .store = target_core_store_dev_udev_path,
1757};
1758
1759static ssize_t target_core_store_dev_enable(
1760 void *p,
1761 const char *page,
1762 size_t count)
1763{
1764 struct se_subsystem_dev *se_dev = p;
1765 struct se_device *dev;
1766 struct se_hba *hba = se_dev->se_dev_hba;
1767 struct se_subsystem_api *t = hba->transport;
1768 char *ptr;
1769
1770 ptr = strstr(page, "1");
1771 if (!ptr) {
1772 pr_err("For dev_enable ops, only valid value"
1773 " is \"1\"\n");
1774 return -EINVAL;
1775 }
1776 if (se_dev->se_dev_ptr) {
1777 pr_err("se_dev->se_dev_ptr already set for storage"
1778 " object\n");
1779 return -EEXIST;
1780 }
1781
1782 if (t->check_configfs_dev_params(hba, se_dev) < 0)
1783 return -EINVAL;
1784
1785 dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr);
1786 if (IS_ERR(dev))
1787 return PTR_ERR(dev);
1788 else if (!dev)
1789 return -EINVAL;
1790
1791 se_dev->se_dev_ptr = dev;
1792 pr_debug("Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:"
1793 " %p\n", se_dev->se_dev_ptr);
1794
1795 return count;
1796}
1797
1798static struct target_core_configfs_attribute target_core_attr_dev_enable = {
1799 .attr = { .ca_owner = THIS_MODULE,
1800 .ca_name = "enable",
1801 .ca_mode = S_IWUSR },
1802 .show = NULL,
1803 .store = target_core_store_dev_enable,
1804};
1805
1806static ssize_t target_core_show_alua_lu_gp(void *p, char *page)
1807{
1808 struct se_device *dev;
1809 struct se_subsystem_dev *su_dev = p;
1810 struct config_item *lu_ci;
1811 struct t10_alua_lu_gp *lu_gp;
1812 struct t10_alua_lu_gp_member *lu_gp_mem;
1813 ssize_t len = 0;
1814
1815 dev = su_dev->se_dev_ptr;
1816 if (!dev)
1817 return -ENODEV;
1818
1819 if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED)
1820 return len;
1821
1822 lu_gp_mem = dev->dev_alua_lu_gp_mem;
1823 if (!lu_gp_mem) {
1824 pr_err("NULL struct se_device->dev_alua_lu_gp_mem"
1825 " pointer\n");
1826 return -EINVAL;
1827 }
1828
1829 spin_lock(&lu_gp_mem->lu_gp_mem_lock);
1830 lu_gp = lu_gp_mem->lu_gp;
1831 if (lu_gp) {
1832 lu_ci = &lu_gp->lu_gp_group.cg_item;
1833 len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n",
1834 config_item_name(lu_ci), lu_gp->lu_gp_id);
1835 }
1836 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1837
1838 return len;
1839}
1840
1841static ssize_t target_core_store_alua_lu_gp(
1842 void *p,
1843 const char *page,
1844 size_t count)
1845{
1846 struct se_device *dev;
1847 struct se_subsystem_dev *su_dev = p;
1848 struct se_hba *hba = su_dev->se_dev_hba;
1849 struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL;
1850 struct t10_alua_lu_gp_member *lu_gp_mem;
1851 unsigned char buf[LU_GROUP_NAME_BUF];
1852 int move = 0;
1853
1854 dev = su_dev->se_dev_ptr;
1855 if (!dev)
1856 return -ENODEV;
1857
1858 if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) {
1859 pr_warn("SPC3_ALUA_EMULATED not enabled for %s/%s\n",
1860 config_item_name(&hba->hba_group.cg_item),
1861 config_item_name(&su_dev->se_dev_group.cg_item));
1862 return -EINVAL;
1863 }
1864 if (count > LU_GROUP_NAME_BUF) {
1865 pr_err("ALUA LU Group Alias too large!\n");
1866 return -EINVAL;
1867 }
1868 memset(buf, 0, LU_GROUP_NAME_BUF);
1869 memcpy(buf, page, count);
1870
1871
1872
1873
1874 if (strcmp(strstrip(buf), "NULL")) {
1875
1876
1877
1878
1879
1880 lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf));
1881 if (!lu_gp_new)
1882 return -ENODEV;
1883 }
1884 lu_gp_mem = dev->dev_alua_lu_gp_mem;
1885 if (!lu_gp_mem) {
1886 if (lu_gp_new)
1887 core_alua_put_lu_gp_from_name(lu_gp_new);
1888 pr_err("NULL struct se_device->dev_alua_lu_gp_mem"
1889 " pointer\n");
1890 return -EINVAL;
1891 }
1892
1893 spin_lock(&lu_gp_mem->lu_gp_mem_lock);
1894 lu_gp = lu_gp_mem->lu_gp;
1895 if (lu_gp) {
1896
1897
1898
1899
1900 if (!lu_gp_new) {
1901 pr_debug("Target_Core_ConfigFS: Releasing %s/%s"
1902 " from ALUA LU Group: core/alua/lu_gps/%s, ID:"
1903 " %hu\n",
1904 config_item_name(&hba->hba_group.cg_item),
1905 config_item_name(&su_dev->se_dev_group.cg_item),
1906 config_item_name(&lu_gp->lu_gp_group.cg_item),
1907 lu_gp->lu_gp_id);
1908
1909 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
1910 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1911
1912 return count;
1913 }
1914
1915
1916
1917 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
1918 move = 1;
1919 }
1920
1921
1922
1923 __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new);
1924 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1925
1926 pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:"
1927 " core/alua/lu_gps/%s, ID: %hu\n",
1928 (move) ? "Moving" : "Adding",
1929 config_item_name(&hba->hba_group.cg_item),
1930 config_item_name(&su_dev->se_dev_group.cg_item),
1931 config_item_name(&lu_gp_new->lu_gp_group.cg_item),
1932 lu_gp_new->lu_gp_id);
1933
1934 core_alua_put_lu_gp_from_name(lu_gp_new);
1935 return count;
1936}
1937
1938static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = {
1939 .attr = { .ca_owner = THIS_MODULE,
1940 .ca_name = "alua_lu_gp",
1941 .ca_mode = S_IRUGO | S_IWUSR },
1942 .show = target_core_show_alua_lu_gp,
1943 .store = target_core_store_alua_lu_gp,
1944};
1945
1946static struct configfs_attribute *lio_core_dev_attrs[] = {
1947 &target_core_attr_dev_info.attr,
1948 &target_core_attr_dev_control.attr,
1949 &target_core_attr_dev_alias.attr,
1950 &target_core_attr_dev_udev_path.attr,
1951 &target_core_attr_dev_enable.attr,
1952 &target_core_attr_dev_alua_lu_gp.attr,
1953 NULL,
1954};
1955
1956static void target_core_dev_release(struct config_item *item)
1957{
1958 struct se_subsystem_dev *se_dev = container_of(to_config_group(item),
1959 struct se_subsystem_dev, se_dev_group);
1960 struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item);
1961 struct se_subsystem_api *t = hba->transport;
1962 struct config_group *dev_cg = &se_dev->se_dev_group;
1963
1964 kfree(dev_cg->default_groups);
1965
1966
1967
1968
1969 if (se_dev->se_dev_ptr) {
1970 pr_debug("Target_Core_ConfigFS: Calling se_free_"
1971 "virtual_device() for se_dev_ptr: %p\n",
1972 se_dev->se_dev_ptr);
1973
1974 se_free_virtual_device(se_dev->se_dev_ptr, hba);
1975 } else {
1976
1977
1978
1979 pr_debug("Target_Core_ConfigFS: Calling t->free_"
1980 "device() for se_dev_su_ptr: %p\n",
1981 se_dev->se_dev_su_ptr);
1982
1983 t->free_device(se_dev->se_dev_su_ptr);
1984 }
1985
1986 pr_debug("Target_Core_ConfigFS: Deallocating se_subsystem"
1987 "_dev_t: %p\n", se_dev);
1988 kfree(se_dev);
1989}
1990
1991static ssize_t target_core_dev_show(struct config_item *item,
1992 struct configfs_attribute *attr,
1993 char *page)
1994{
1995 struct se_subsystem_dev *se_dev = container_of(
1996 to_config_group(item), struct se_subsystem_dev,
1997 se_dev_group);
1998 struct target_core_configfs_attribute *tc_attr = container_of(
1999 attr, struct target_core_configfs_attribute, attr);
2000
2001 if (!tc_attr->show)
2002 return -EINVAL;
2003
2004 return tc_attr->show(se_dev, page);
2005}
2006
2007static ssize_t target_core_dev_store(struct config_item *item,
2008 struct configfs_attribute *attr,
2009 const char *page, size_t count)
2010{
2011 struct se_subsystem_dev *se_dev = container_of(
2012 to_config_group(item), struct se_subsystem_dev,
2013 se_dev_group);
2014 struct target_core_configfs_attribute *tc_attr = container_of(
2015 attr, struct target_core_configfs_attribute, attr);
2016
2017 if (!tc_attr->store)
2018 return -EINVAL;
2019
2020 return tc_attr->store(se_dev, page, count);
2021}
2022
2023static struct configfs_item_operations target_core_dev_item_ops = {
2024 .release = target_core_dev_release,
2025 .show_attribute = target_core_dev_show,
2026 .store_attribute = target_core_dev_store,
2027};
2028
2029static struct config_item_type target_core_dev_cit = {
2030 .ct_item_ops = &target_core_dev_item_ops,
2031 .ct_attrs = lio_core_dev_attrs,
2032 .ct_owner = THIS_MODULE,
2033};
2034
2035
2036
2037
2038
2039CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp);
2040#define SE_DEV_ALUA_LU_ATTR(_name, _mode) \
2041static struct target_core_alua_lu_gp_attribute \
2042 target_core_alua_lu_gp_##_name = \
2043 __CONFIGFS_EATTR(_name, _mode, \
2044 target_core_alua_lu_gp_show_attr_##_name, \
2045 target_core_alua_lu_gp_store_attr_##_name);
2046
2047#define SE_DEV_ALUA_LU_ATTR_RO(_name) \
2048static struct target_core_alua_lu_gp_attribute \
2049 target_core_alua_lu_gp_##_name = \
2050 __CONFIGFS_EATTR_RO(_name, \
2051 target_core_alua_lu_gp_show_attr_##_name);
2052
2053
2054
2055
2056static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id(
2057 struct t10_alua_lu_gp *lu_gp,
2058 char *page)
2059{
2060 if (!lu_gp->lu_gp_valid_id)
2061 return 0;
2062
2063 return sprintf(page, "%hu\n", lu_gp->lu_gp_id);
2064}
2065
2066static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id(
2067 struct t10_alua_lu_gp *lu_gp,
2068 const char *page,
2069 size_t count)
2070{
2071 struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group;
2072 unsigned long lu_gp_id;
2073 int ret;
2074
2075 ret = strict_strtoul(page, 0, &lu_gp_id);
2076 if (ret < 0) {
2077 pr_err("strict_strtoul() returned %d for"
2078 " lu_gp_id\n", ret);
2079 return -EINVAL;
2080 }
2081 if (lu_gp_id > 0x0000ffff) {
2082 pr_err("ALUA lu_gp_id: %lu exceeds maximum:"
2083 " 0x0000ffff\n", lu_gp_id);
2084 return -EINVAL;
2085 }
2086
2087 ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id);
2088 if (ret < 0)
2089 return -EINVAL;
2090
2091 pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit"
2092 " Group: core/alua/lu_gps/%s to ID: %hu\n",
2093 config_item_name(&alua_lu_gp_cg->cg_item),
2094 lu_gp->lu_gp_id);
2095
2096 return count;
2097}
2098
2099SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR);
2100
2101
2102
2103
2104static ssize_t target_core_alua_lu_gp_show_attr_members(
2105 struct t10_alua_lu_gp *lu_gp,
2106 char *page)
2107{
2108 struct se_device *dev;
2109 struct se_hba *hba;
2110 struct se_subsystem_dev *su_dev;
2111 struct t10_alua_lu_gp_member *lu_gp_mem;
2112 ssize_t len = 0, cur_len;
2113 unsigned char buf[LU_GROUP_NAME_BUF];
2114
2115 memset(buf, 0, LU_GROUP_NAME_BUF);
2116
2117 spin_lock(&lu_gp->lu_gp_lock);
2118 list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) {
2119 dev = lu_gp_mem->lu_gp_mem_dev;
2120 su_dev = dev->se_sub_dev;
2121 hba = su_dev->se_dev_hba;
2122
2123 cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n",
2124 config_item_name(&hba->hba_group.cg_item),
2125 config_item_name(&su_dev->se_dev_group.cg_item));
2126 cur_len++;
2127
2128 if ((cur_len + len) > PAGE_SIZE) {
2129 pr_warn("Ran out of lu_gp_show_attr"
2130 "_members buffer\n");
2131 break;
2132 }
2133 memcpy(page+len, buf, cur_len);
2134 len += cur_len;
2135 }
2136 spin_unlock(&lu_gp->lu_gp_lock);
2137
2138 return len;
2139}
2140
2141SE_DEV_ALUA_LU_ATTR_RO(members);
2142
2143CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group);
2144
2145static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = {
2146 &target_core_alua_lu_gp_lu_gp_id.attr,
2147 &target_core_alua_lu_gp_members.attr,
2148 NULL,
2149};
2150
2151static void target_core_alua_lu_gp_release(struct config_item *item)
2152{
2153 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
2154 struct t10_alua_lu_gp, lu_gp_group);
2155
2156 core_alua_free_lu_gp(lu_gp);
2157}
2158
2159static struct configfs_item_operations target_core_alua_lu_gp_ops = {
2160 .release = target_core_alua_lu_gp_release,
2161 .show_attribute = target_core_alua_lu_gp_attr_show,
2162 .store_attribute = target_core_alua_lu_gp_attr_store,
2163};
2164
2165static struct config_item_type target_core_alua_lu_gp_cit = {
2166 .ct_item_ops = &target_core_alua_lu_gp_ops,
2167 .ct_attrs = target_core_alua_lu_gp_attrs,
2168 .ct_owner = THIS_MODULE,
2169};
2170
2171
2172
2173
2174
2175static struct config_group *target_core_alua_create_lu_gp(
2176 struct config_group *group,
2177 const char *name)
2178{
2179 struct t10_alua_lu_gp *lu_gp;
2180 struct config_group *alua_lu_gp_cg = NULL;
2181 struct config_item *alua_lu_gp_ci = NULL;
2182
2183 lu_gp = core_alua_allocate_lu_gp(name, 0);
2184 if (IS_ERR(lu_gp))
2185 return NULL;
2186
2187 alua_lu_gp_cg = &lu_gp->lu_gp_group;
2188 alua_lu_gp_ci = &alua_lu_gp_cg->cg_item;
2189
2190 config_group_init_type_name(alua_lu_gp_cg, name,
2191 &target_core_alua_lu_gp_cit);
2192
2193 pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit"
2194 " Group: core/alua/lu_gps/%s\n",
2195 config_item_name(alua_lu_gp_ci));
2196
2197 return alua_lu_gp_cg;
2198
2199}
2200
2201static void target_core_alua_drop_lu_gp(
2202 struct config_group *group,
2203 struct config_item *item)
2204{
2205 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
2206 struct t10_alua_lu_gp, lu_gp_group);
2207
2208 pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit"
2209 " Group: core/alua/lu_gps/%s, ID: %hu\n",
2210 config_item_name(item), lu_gp->lu_gp_id);
2211
2212
2213
2214
2215 config_item_put(item);
2216}
2217
2218static struct configfs_group_operations target_core_alua_lu_gps_group_ops = {
2219 .make_group = &target_core_alua_create_lu_gp,
2220 .drop_item = &target_core_alua_drop_lu_gp,
2221};
2222
2223static struct config_item_type target_core_alua_lu_gps_cit = {
2224 .ct_item_ops = NULL,
2225 .ct_group_ops = &target_core_alua_lu_gps_group_ops,
2226 .ct_owner = THIS_MODULE,
2227};
2228
2229
2230
2231
2232
2233CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp);
2234#define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \
2235static struct target_core_alua_tg_pt_gp_attribute \
2236 target_core_alua_tg_pt_gp_##_name = \
2237 __CONFIGFS_EATTR(_name, _mode, \
2238 target_core_alua_tg_pt_gp_show_attr_##_name, \
2239 target_core_alua_tg_pt_gp_store_attr_##_name);
2240
2241#define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \
2242static struct target_core_alua_tg_pt_gp_attribute \
2243 target_core_alua_tg_pt_gp_##_name = \
2244 __CONFIGFS_EATTR_RO(_name, \
2245 target_core_alua_tg_pt_gp_show_attr_##_name);
2246
2247
2248
2249
2250static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state(
2251 struct t10_alua_tg_pt_gp *tg_pt_gp,
2252 char *page)
2253{
2254 return sprintf(page, "%d\n",
2255 atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state));
2256}
2257
2258static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state(
2259 struct t10_alua_tg_pt_gp *tg_pt_gp,
2260 const char *page,
2261 size_t count)
2262{
2263 struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev;
2264 unsigned long tmp;
2265 int new_state, ret;
2266
2267 if (!tg_pt_gp->tg_pt_gp_valid_id) {
2268 pr_err("Unable to do implict ALUA on non valid"
2269 " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id);
2270 return -EINVAL;
2271 }
2272
2273 ret = strict_strtoul(page, 0, &tmp);
2274 if (ret < 0) {
2275 pr_err("Unable to extract new ALUA access state from"
2276 " %s\n", page);
2277 return -EINVAL;
2278 }
2279 new_state = (int)tmp;
2280
2281 if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) {
2282 pr_err("Unable to process implict configfs ALUA"
2283 " transition while TPGS_IMPLICT_ALUA is disabled\n");
2284 return -EINVAL;
2285 }
2286
2287 ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr,
2288 NULL, NULL, new_state, 0);
2289 return (!ret) ? count : -EINVAL;
2290}
2291
2292SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR);
2293
2294
2295
2296
2297static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status(
2298 struct t10_alua_tg_pt_gp *tg_pt_gp,
2299 char *page)
2300{
2301 return sprintf(page, "%s\n",
2302 core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status));
2303}
2304
2305static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status(
2306 struct t10_alua_tg_pt_gp *tg_pt_gp,
2307 const char *page,
2308 size_t count)
2309{
2310 unsigned long tmp;
2311 int new_status, ret;
2312
2313 if (!tg_pt_gp->tg_pt_gp_valid_id) {
2314 pr_err("Unable to do set ALUA access status on non"
2315 " valid tg_pt_gp ID: %hu\n",
2316 tg_pt_gp->tg_pt_gp_valid_id);
2317 return -EINVAL;
2318 }
2319
2320 ret = strict_strtoul(page, 0, &tmp);
2321 if (ret < 0) {
2322 pr_err("Unable to extract new ALUA access status"
2323 " from %s\n", page);
2324 return -EINVAL;
2325 }
2326 new_status = (int)tmp;
2327
2328 if ((new_status != ALUA_STATUS_NONE) &&
2329 (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) &&
2330 (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) {
2331 pr_err("Illegal ALUA access status: 0x%02x\n",
2332 new_status);
2333 return -EINVAL;
2334 }
2335
2336 tg_pt_gp->tg_pt_gp_alua_access_status = new_status;
2337 return count;
2338}
2339
2340SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR);
2341
2342
2343
2344
2345static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type(
2346 struct t10_alua_tg_pt_gp *tg_pt_gp,
2347 char *page)
2348{
2349 return core_alua_show_access_type(tg_pt_gp, page);
2350}
2351
2352static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type(
2353 struct t10_alua_tg_pt_gp *tg_pt_gp,
2354 const char *page,
2355 size_t count)
2356{
2357 return core_alua_store_access_type(tg_pt_gp, page, count);
2358}
2359
2360SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR);
2361
2362
2363
2364
2365static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata(
2366 struct t10_alua_tg_pt_gp *tg_pt_gp,
2367 char *page)
2368{
2369 return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata);
2370}
2371
2372static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata(
2373 struct t10_alua_tg_pt_gp *tg_pt_gp,
2374 const char *page,
2375 size_t count)
2376{
2377 unsigned long tmp;
2378 int ret;
2379
2380 ret = strict_strtoul(page, 0, &tmp);
2381 if (ret < 0) {
2382 pr_err("Unable to extract alua_write_metadata\n");
2383 return -EINVAL;
2384 }
2385
2386 if ((tmp != 0) && (tmp != 1)) {
2387 pr_err("Illegal value for alua_write_metadata:"
2388 " %lu\n", tmp);
2389 return -EINVAL;
2390 }
2391 tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp;
2392
2393 return count;
2394}
2395
2396SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR);
2397
2398
2399
2400
2401
2402
2403static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs(
2404 struct t10_alua_tg_pt_gp *tg_pt_gp,
2405 char *page)
2406{
2407 return core_alua_show_nonop_delay_msecs(tg_pt_gp, page);
2408
2409}
2410
2411static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs(
2412 struct t10_alua_tg_pt_gp *tg_pt_gp,
2413 const char *page,
2414 size_t count)
2415{
2416 return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count);
2417}
2418
2419SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR);
2420
2421
2422
2423
2424static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs(
2425 struct t10_alua_tg_pt_gp *tg_pt_gp,
2426 char *page)
2427{
2428 return core_alua_show_trans_delay_msecs(tg_pt_gp, page);
2429}
2430
2431static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs(
2432 struct t10_alua_tg_pt_gp *tg_pt_gp,
2433 const char *page,
2434 size_t count)
2435{
2436 return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count);
2437}
2438
2439SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR);
2440
2441
2442
2443
2444static ssize_t target_core_alua_tg_pt_gp_show_attr_implict_trans_secs(
2445 struct t10_alua_tg_pt_gp *tg_pt_gp,
2446 char *page)
2447{
2448 return core_alua_show_implict_trans_secs(tg_pt_gp, page);
2449}
2450
2451static ssize_t target_core_alua_tg_pt_gp_store_attr_implict_trans_secs(
2452 struct t10_alua_tg_pt_gp *tg_pt_gp,
2453 const char *page,
2454 size_t count)
2455{
2456 return core_alua_store_implict_trans_secs(tg_pt_gp, page, count);
2457}
2458
2459SE_DEV_ALUA_TG_PT_ATTR(implict_trans_secs, S_IRUGO | S_IWUSR);
2460
2461
2462
2463
2464
2465static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred(
2466 struct t10_alua_tg_pt_gp *tg_pt_gp,
2467 char *page)
2468{
2469 return core_alua_show_preferred_bit(tg_pt_gp, page);
2470}
2471
2472static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred(
2473 struct t10_alua_tg_pt_gp *tg_pt_gp,
2474 const char *page,
2475 size_t count)
2476{
2477 return core_alua_store_preferred_bit(tg_pt_gp, page, count);
2478}
2479
2480SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR);
2481
2482
2483
2484
2485static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id(
2486 struct t10_alua_tg_pt_gp *tg_pt_gp,
2487 char *page)
2488{
2489 if (!tg_pt_gp->tg_pt_gp_valid_id)
2490 return 0;
2491
2492 return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id);
2493}
2494
2495static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id(
2496 struct t10_alua_tg_pt_gp *tg_pt_gp,
2497 const char *page,
2498 size_t count)
2499{
2500 struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
2501 unsigned long tg_pt_gp_id;
2502 int ret;
2503
2504 ret = strict_strtoul(page, 0, &tg_pt_gp_id);
2505 if (ret < 0) {
2506 pr_err("strict_strtoul() returned %d for"
2507 " tg_pt_gp_id\n", ret);
2508 return -EINVAL;
2509 }
2510 if (tg_pt_gp_id > 0x0000ffff) {
2511 pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:"
2512 " 0x0000ffff\n", tg_pt_gp_id);
2513 return -EINVAL;
2514 }
2515
2516 ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id);
2517 if (ret < 0)
2518 return -EINVAL;
2519
2520 pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: "
2521 "core/alua/tg_pt_gps/%s to ID: %hu\n",
2522 config_item_name(&alua_tg_pt_gp_cg->cg_item),
2523 tg_pt_gp->tg_pt_gp_id);
2524
2525 return count;
2526}
2527
2528SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR);
2529
2530
2531
2532
2533static ssize_t target_core_alua_tg_pt_gp_show_attr_members(
2534 struct t10_alua_tg_pt_gp *tg_pt_gp,
2535 char *page)
2536{
2537 struct se_port *port;
2538 struct se_portal_group *tpg;
2539 struct se_lun *lun;
2540 struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
2541 ssize_t len = 0, cur_len;
2542 unsigned char buf[TG_PT_GROUP_NAME_BUF];
2543
2544 memset(buf, 0, TG_PT_GROUP_NAME_BUF);
2545
2546 spin_lock(&tg_pt_gp->tg_pt_gp_lock);
2547 list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list,
2548 tg_pt_gp_mem_list) {
2549 port = tg_pt_gp_mem->tg_pt;
2550 tpg = port->sep_tpg;
2551 lun = port->sep_lun;
2552
2553 cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu"
2554 "/%s\n", tpg->se_tpg_tfo->get_fabric_name(),
2555 tpg->se_tpg_tfo->tpg_get_wwn(tpg),
2556 tpg->se_tpg_tfo->tpg_get_tag(tpg),
2557 config_item_name(&lun->lun_group.cg_item));
2558 cur_len++;
2559
2560 if ((cur_len + len) > PAGE_SIZE) {
2561 pr_warn("Ran out of lu_gp_show_attr"
2562 "_members buffer\n");
2563 break;
2564 }
2565 memcpy(page+len, buf, cur_len);
2566 len += cur_len;
2567 }
2568 spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
2569
2570 return len;
2571}
2572
2573SE_DEV_ALUA_TG_PT_ATTR_RO(members);
2574
2575CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp,
2576 tg_pt_gp_group);
2577
2578static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = {
2579 &target_core_alua_tg_pt_gp_alua_access_state.attr,
2580 &target_core_alua_tg_pt_gp_alua_access_status.attr,
2581 &target_core_alua_tg_pt_gp_alua_access_type.attr,
2582 &target_core_alua_tg_pt_gp_alua_write_metadata.attr,
2583 &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr,
2584 &target_core_alua_tg_pt_gp_trans_delay_msecs.attr,
2585 &target_core_alua_tg_pt_gp_implict_trans_secs.attr,
2586 &target_core_alua_tg_pt_gp_preferred.attr,
2587 &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr,
2588 &target_core_alua_tg_pt_gp_members.attr,
2589 NULL,
2590};
2591
2592static void target_core_alua_tg_pt_gp_release(struct config_item *item)
2593{
2594 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
2595 struct t10_alua_tg_pt_gp, tg_pt_gp_group);
2596
2597 core_alua_free_tg_pt_gp(tg_pt_gp);
2598}
2599
2600static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = {
2601 .release = target_core_alua_tg_pt_gp_release,
2602 .show_attribute = target_core_alua_tg_pt_gp_attr_show,
2603 .store_attribute = target_core_alua_tg_pt_gp_attr_store,
2604};
2605
2606static struct config_item_type target_core_alua_tg_pt_gp_cit = {
2607 .ct_item_ops = &target_core_alua_tg_pt_gp_ops,
2608 .ct_attrs = target_core_alua_tg_pt_gp_attrs,
2609 .ct_owner = THIS_MODULE,
2610};
2611
2612
2613
2614
2615
2616static struct config_group *target_core_alua_create_tg_pt_gp(
2617 struct config_group *group,
2618 const char *name)
2619{
2620 struct t10_alua *alua = container_of(group, struct t10_alua,
2621 alua_tg_pt_gps_group);
2622 struct t10_alua_tg_pt_gp *tg_pt_gp;
2623 struct se_subsystem_dev *su_dev = alua->t10_sub_dev;
2624 struct config_group *alua_tg_pt_gp_cg = NULL;
2625 struct config_item *alua_tg_pt_gp_ci = NULL;
2626
2627 tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0);
2628 if (!tg_pt_gp)
2629 return NULL;
2630
2631 alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
2632 alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item;
2633
2634 config_group_init_type_name(alua_tg_pt_gp_cg, name,
2635 &target_core_alua_tg_pt_gp_cit);
2636
2637 pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port"
2638 " Group: alua/tg_pt_gps/%s\n",
2639 config_item_name(alua_tg_pt_gp_ci));
2640
2641 return alua_tg_pt_gp_cg;
2642}
2643
2644static void target_core_alua_drop_tg_pt_gp(
2645 struct config_group *group,
2646 struct config_item *item)
2647{
2648 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
2649 struct t10_alua_tg_pt_gp, tg_pt_gp_group);
2650
2651 pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port"
2652 " Group: alua/tg_pt_gps/%s, ID: %hu\n",
2653 config_item_name(item), tg_pt_gp->tg_pt_gp_id);
2654
2655
2656
2657
2658 config_item_put(item);
2659}
2660
2661static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = {
2662 .make_group = &target_core_alua_create_tg_pt_gp,
2663 .drop_item = &target_core_alua_drop_tg_pt_gp,
2664};
2665
2666static struct config_item_type target_core_alua_tg_pt_gps_cit = {
2667 .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops,
2668 .ct_owner = THIS_MODULE,
2669};
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681static struct config_item_type target_core_alua_cit = {
2682 .ct_item_ops = NULL,
2683 .ct_attrs = NULL,
2684 .ct_owner = THIS_MODULE,
2685};
2686
2687
2688
2689
2690
2691static struct config_group *target_core_stat_mkdir(
2692 struct config_group *group,
2693 const char *name)
2694{
2695 return ERR_PTR(-ENOSYS);
2696}
2697
2698static void target_core_stat_rmdir(
2699 struct config_group *group,
2700 struct config_item *item)
2701{
2702 return;
2703}
2704
2705static struct configfs_group_operations target_core_stat_group_ops = {
2706 .make_group = &target_core_stat_mkdir,
2707 .drop_item = &target_core_stat_rmdir,
2708};
2709
2710static struct config_item_type target_core_stat_cit = {
2711 .ct_group_ops = &target_core_stat_group_ops,
2712 .ct_owner = THIS_MODULE,
2713};
2714
2715
2716
2717
2718
2719static struct config_group *target_core_make_subdev(
2720 struct config_group *group,
2721 const char *name)
2722{
2723 struct t10_alua_tg_pt_gp *tg_pt_gp;
2724 struct se_subsystem_dev *se_dev;
2725 struct se_subsystem_api *t;
2726 struct config_item *hba_ci = &group->cg_item;
2727 struct se_hba *hba = item_to_hba(hba_ci);
2728 struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL;
2729 struct config_group *dev_stat_grp = NULL;
2730 int errno = -ENOMEM, ret;
2731
2732 ret = mutex_lock_interruptible(&hba->hba_access_mutex);
2733 if (ret)
2734 return ERR_PTR(ret);
2735
2736
2737
2738 t = hba->transport;
2739
2740 se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL);
2741 if (!se_dev) {
2742 pr_err("Unable to allocate memory for"
2743 " struct se_subsystem_dev\n");
2744 goto unlock;
2745 }
2746 INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list);
2747 spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock);
2748 INIT_LIST_HEAD(&se_dev->t10_pr.registration_list);
2749 INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list);
2750 spin_lock_init(&se_dev->t10_pr.registration_lock);
2751 spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock);
2752 INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list);
2753 spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock);
2754 spin_lock_init(&se_dev->se_dev_lock);
2755 se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN;
2756 se_dev->t10_wwn.t10_sub_dev = se_dev;
2757 se_dev->t10_alua.t10_sub_dev = se_dev;
2758 se_dev->se_dev_attrib.da_sub_dev = se_dev;
2759
2760 se_dev->se_dev_hba = hba;
2761 dev_cg = &se_dev->se_dev_group;
2762
2763 dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7,
2764 GFP_KERNEL);
2765 if (!dev_cg->default_groups)
2766 goto out;
2767
2768
2769
2770
2771
2772
2773
2774
2775 se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name);
2776 if (!se_dev->se_dev_su_ptr) {
2777 pr_err("Unable to locate subsystem dependent pointer"
2778 " from allocate_virtdevice()\n");
2779 goto out;
2780 }
2781
2782 config_group_init_type_name(&se_dev->se_dev_group, name,
2783 &target_core_dev_cit);
2784 config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib",
2785 &target_core_dev_attrib_cit);
2786 config_group_init_type_name(&se_dev->se_dev_pr_group, "pr",
2787 &target_core_dev_pr_cit);
2788 config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn",
2789 &target_core_dev_wwn_cit);
2790 config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group,
2791 "alua", &target_core_alua_tg_pt_gps_cit);
2792 config_group_init_type_name(&se_dev->dev_stat_grps.stat_group,
2793 "statistics", &target_core_stat_cit);
2794
2795 dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group;
2796 dev_cg->default_groups[1] = &se_dev->se_dev_pr_group;
2797 dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group;
2798 dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group;
2799 dev_cg->default_groups[4] = &se_dev->dev_stat_grps.stat_group;
2800 dev_cg->default_groups[5] = NULL;
2801
2802
2803
2804 tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1);
2805 if (!tg_pt_gp)
2806 goto out;
2807
2808 tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group;
2809 tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
2810 GFP_KERNEL);
2811 if (!tg_pt_gp_cg->default_groups) {
2812 pr_err("Unable to allocate tg_pt_gp_cg->"
2813 "default_groups\n");
2814 goto out;
2815 }
2816
2817 config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group,
2818 "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit);
2819 tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group;
2820 tg_pt_gp_cg->default_groups[1] = NULL;
2821 se_dev->t10_alua.default_tg_pt_gp = tg_pt_gp;
2822
2823
2824
2825 dev_stat_grp = &se_dev->dev_stat_grps.stat_group;
2826 dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4,
2827 GFP_KERNEL);
2828 if (!dev_stat_grp->default_groups) {
2829 pr_err("Unable to allocate dev_stat_grp->default_groups\n");
2830 goto out;
2831 }
2832 target_stat_setup_dev_default_groups(se_dev);
2833
2834 pr_debug("Target_Core_ConfigFS: Allocated struct se_subsystem_dev:"
2835 " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr);
2836
2837 mutex_unlock(&hba->hba_access_mutex);
2838 return &se_dev->se_dev_group;
2839out:
2840 if (se_dev->t10_alua.default_tg_pt_gp) {
2841 core_alua_free_tg_pt_gp(se_dev->t10_alua.default_tg_pt_gp);
2842 se_dev->t10_alua.default_tg_pt_gp = NULL;
2843 }
2844 if (dev_stat_grp)
2845 kfree(dev_stat_grp->default_groups);
2846 if (tg_pt_gp_cg)
2847 kfree(tg_pt_gp_cg->default_groups);
2848 if (dev_cg)
2849 kfree(dev_cg->default_groups);
2850 if (se_dev->se_dev_su_ptr)
2851 t->free_device(se_dev->se_dev_su_ptr);
2852 kfree(se_dev);
2853unlock:
2854 mutex_unlock(&hba->hba_access_mutex);
2855 return ERR_PTR(errno);
2856}
2857
2858static void target_core_drop_subdev(
2859 struct config_group *group,
2860 struct config_item *item)
2861{
2862 struct se_subsystem_dev *se_dev = container_of(to_config_group(item),
2863 struct se_subsystem_dev, se_dev_group);
2864 struct se_hba *hba;
2865 struct config_item *df_item;
2866 struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp;
2867 int i;
2868
2869 hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item);
2870
2871 mutex_lock(&hba->hba_access_mutex);
2872
2873 dev_stat_grp = &se_dev->dev_stat_grps.stat_group;
2874 for (i = 0; dev_stat_grp->default_groups[i]; i++) {
2875 df_item = &dev_stat_grp->default_groups[i]->cg_item;
2876 dev_stat_grp->default_groups[i] = NULL;
2877 config_item_put(df_item);
2878 }
2879 kfree(dev_stat_grp->default_groups);
2880
2881 tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group;
2882 for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) {
2883 df_item = &tg_pt_gp_cg->default_groups[i]->cg_item;
2884 tg_pt_gp_cg->default_groups[i] = NULL;
2885 config_item_put(df_item);
2886 }
2887 kfree(tg_pt_gp_cg->default_groups);
2888
2889
2890
2891
2892 se_dev->t10_alua.default_tg_pt_gp = NULL;
2893
2894 dev_cg = &se_dev->se_dev_group;
2895 for (i = 0; dev_cg->default_groups[i]; i++) {
2896 df_item = &dev_cg->default_groups[i]->cg_item;
2897 dev_cg->default_groups[i] = NULL;
2898 config_item_put(df_item);
2899 }
2900
2901
2902
2903
2904 config_item_put(item);
2905 mutex_unlock(&hba->hba_access_mutex);
2906}
2907
2908static struct configfs_group_operations target_core_hba_group_ops = {
2909 .make_group = target_core_make_subdev,
2910 .drop_item = target_core_drop_subdev,
2911};
2912
2913CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba);
2914#define SE_HBA_ATTR(_name, _mode) \
2915static struct target_core_hba_attribute \
2916 target_core_hba_##_name = \
2917 __CONFIGFS_EATTR(_name, _mode, \
2918 target_core_hba_show_attr_##_name, \
2919 target_core_hba_store_attr_##_name);
2920
2921#define SE_HBA_ATTR_RO(_name) \
2922static struct target_core_hba_attribute \
2923 target_core_hba_##_name = \
2924 __CONFIGFS_EATTR_RO(_name, \
2925 target_core_hba_show_attr_##_name);
2926
2927static ssize_t target_core_hba_show_attr_hba_info(
2928 struct se_hba *hba,
2929 char *page)
2930{
2931 return sprintf(page, "HBA Index: %d plugin: %s version: %s\n",
2932 hba->hba_id, hba->transport->name,
2933 TARGET_CORE_CONFIGFS_VERSION);
2934}
2935
2936SE_HBA_ATTR_RO(hba_info);
2937
2938static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba,
2939 char *page)
2940{
2941 int hba_mode = 0;
2942
2943 if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE)
2944 hba_mode = 1;
2945
2946 return sprintf(page, "%d\n", hba_mode);
2947}
2948
2949static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba,
2950 const char *page, size_t count)
2951{
2952 struct se_subsystem_api *transport = hba->transport;
2953 unsigned long mode_flag;
2954 int ret;
2955
2956 if (transport->pmode_enable_hba == NULL)
2957 return -EINVAL;
2958
2959 ret = strict_strtoul(page, 0, &mode_flag);
2960 if (ret < 0) {
2961 pr_err("Unable to extract hba mode flag: %d\n", ret);
2962 return -EINVAL;
2963 }
2964
2965 spin_lock(&hba->device_lock);
2966 if (!list_empty(&hba->hba_dev_list)) {
2967 pr_err("Unable to set hba_mode with active devices\n");
2968 spin_unlock(&hba->device_lock);
2969 return -EINVAL;
2970 }
2971 spin_unlock(&hba->device_lock);
2972
2973 ret = transport->pmode_enable_hba(hba, mode_flag);
2974 if (ret < 0)
2975 return -EINVAL;
2976 if (ret > 0)
2977 hba->hba_flags |= HBA_FLAGS_PSCSI_MODE;
2978 else if (ret == 0)
2979 hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE;
2980
2981 return count;
2982}
2983
2984SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR);
2985
2986CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group);
2987
2988static void target_core_hba_release(struct config_item *item)
2989{
2990 struct se_hba *hba = container_of(to_config_group(item),
2991 struct se_hba, hba_group);
2992 core_delete_hba(hba);
2993}
2994
2995static struct configfs_attribute *target_core_hba_attrs[] = {
2996 &target_core_hba_hba_info.attr,
2997 &target_core_hba_hba_mode.attr,
2998 NULL,
2999};
3000
3001static struct configfs_item_operations target_core_hba_item_ops = {
3002 .release = target_core_hba_release,
3003 .show_attribute = target_core_hba_attr_show,
3004 .store_attribute = target_core_hba_attr_store,
3005};
3006
3007static struct config_item_type target_core_hba_cit = {
3008 .ct_item_ops = &target_core_hba_item_ops,
3009 .ct_group_ops = &target_core_hba_group_ops,
3010 .ct_attrs = target_core_hba_attrs,
3011 .ct_owner = THIS_MODULE,
3012};
3013
3014static struct config_group *target_core_call_addhbatotarget(
3015 struct config_group *group,
3016 const char *name)
3017{
3018 char *se_plugin_str, *str, *str2;
3019 struct se_hba *hba;
3020 char buf[TARGET_CORE_NAME_MAX_LEN];
3021 unsigned long plugin_dep_id = 0;
3022 int ret;
3023
3024 memset(buf, 0, TARGET_CORE_NAME_MAX_LEN);
3025 if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) {
3026 pr_err("Passed *name strlen(): %d exceeds"
3027 " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name),
3028 TARGET_CORE_NAME_MAX_LEN);
3029 return ERR_PTR(-ENAMETOOLONG);
3030 }
3031 snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name);
3032
3033 str = strstr(buf, "_");
3034 if (!str) {
3035 pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n");
3036 return ERR_PTR(-EINVAL);
3037 }
3038 se_plugin_str = buf;
3039
3040
3041
3042
3043 str2 = strstr(str+1, "_");
3044 if (str2) {
3045 *str2 = '\0';
3046 str2++;
3047 str = str2;
3048 } else {
3049 *str = '\0';
3050 str++;
3051 }
3052
3053 ret = strict_strtoul(str, 0, &plugin_dep_id);
3054 if (ret < 0) {
3055 pr_err("strict_strtoul() returned %d for"
3056 " plugin_dep_id\n", ret);
3057 return ERR_PTR(-EINVAL);
3058 }
3059
3060
3061
3062 transport_subsystem_check_init();
3063
3064 hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0);
3065 if (IS_ERR(hba))
3066 return ERR_CAST(hba);
3067
3068 config_group_init_type_name(&hba->hba_group, name,
3069 &target_core_hba_cit);
3070
3071 return &hba->hba_group;
3072}
3073
3074static void target_core_call_delhbafromtarget(
3075 struct config_group *group,
3076 struct config_item *item)
3077{
3078
3079
3080
3081
3082 config_item_put(item);
3083}
3084
3085static struct configfs_group_operations target_core_group_ops = {
3086 .make_group = target_core_call_addhbatotarget,
3087 .drop_item = target_core_call_delhbafromtarget,
3088};
3089
3090static struct config_item_type target_core_cit = {
3091 .ct_item_ops = NULL,
3092 .ct_group_ops = &target_core_group_ops,
3093 .ct_attrs = NULL,
3094 .ct_owner = THIS_MODULE,
3095};
3096
3097
3098
3099static int __init target_core_init_configfs(void)
3100{
3101 struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL;
3102 struct config_group *lu_gp_cg = NULL;
3103 struct configfs_subsystem *subsys;
3104 struct t10_alua_lu_gp *lu_gp;
3105 int ret;
3106
3107 pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage"
3108 " Engine: %s on %s/%s on "UTS_RELEASE"\n",
3109 TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine);
3110
3111 subsys = target_core_subsystem[0];
3112 config_group_init(&subsys->su_group);
3113 mutex_init(&subsys->su_mutex);
3114
3115 ret = init_se_kmem_caches();
3116 if (ret < 0)
3117 return ret;
3118
3119
3120
3121
3122 target_cg = &subsys->su_group;
3123 target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
3124 GFP_KERNEL);
3125 if (!target_cg->default_groups) {
3126 pr_err("Unable to allocate target_cg->default_groups\n");
3127 ret = -ENOMEM;
3128 goto out_global;
3129 }
3130
3131 config_group_init_type_name(&target_core_hbagroup,
3132 "core", &target_core_cit);
3133 target_cg->default_groups[0] = &target_core_hbagroup;
3134 target_cg->default_groups[1] = NULL;
3135
3136
3137
3138 hba_cg = &target_core_hbagroup;
3139 hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
3140 GFP_KERNEL);
3141 if (!hba_cg->default_groups) {
3142 pr_err("Unable to allocate hba_cg->default_groups\n");
3143 ret = -ENOMEM;
3144 goto out_global;
3145 }
3146 config_group_init_type_name(&alua_group,
3147 "alua", &target_core_alua_cit);
3148 hba_cg->default_groups[0] = &alua_group;
3149 hba_cg->default_groups[1] = NULL;
3150
3151
3152
3153
3154 alua_cg = &alua_group;
3155 alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
3156 GFP_KERNEL);
3157 if (!alua_cg->default_groups) {
3158 pr_err("Unable to allocate alua_cg->default_groups\n");
3159 ret = -ENOMEM;
3160 goto out_global;
3161 }
3162
3163 config_group_init_type_name(&alua_lu_gps_group,
3164 "lu_gps", &target_core_alua_lu_gps_cit);
3165 alua_cg->default_groups[0] = &alua_lu_gps_group;
3166 alua_cg->default_groups[1] = NULL;
3167
3168
3169
3170 lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1);
3171 if (IS_ERR(lu_gp)) {
3172 ret = -ENOMEM;
3173 goto out_global;
3174 }
3175
3176 lu_gp_cg = &alua_lu_gps_group;
3177 lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
3178 GFP_KERNEL);
3179 if (!lu_gp_cg->default_groups) {
3180 pr_err("Unable to allocate lu_gp_cg->default_groups\n");
3181 ret = -ENOMEM;
3182 goto out_global;
3183 }
3184
3185 config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp",
3186 &target_core_alua_lu_gp_cit);
3187 lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group;
3188 lu_gp_cg->default_groups[1] = NULL;
3189 default_lu_gp = lu_gp;
3190
3191
3192
3193 ret = configfs_register_subsystem(subsys);
3194 if (ret < 0) {
3195 pr_err("Error %d while registering subsystem %s\n",
3196 ret, subsys->su_group.cg_item.ci_namebuf);
3197 goto out_global;
3198 }
3199 pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric"
3200 " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s"
3201 " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine);
3202
3203
3204
3205 ret = rd_module_init();
3206 if (ret < 0)
3207 goto out;
3208
3209 ret = core_dev_setup_virtual_lun0();
3210 if (ret < 0)
3211 goto out;
3212
3213 return 0;
3214
3215out:
3216 configfs_unregister_subsystem(subsys);
3217 core_dev_release_virtual_lun0();
3218 rd_module_exit();
3219out_global:
3220 if (default_lu_gp) {
3221 core_alua_free_lu_gp(default_lu_gp);
3222 default_lu_gp = NULL;
3223 }
3224 if (lu_gp_cg)
3225 kfree(lu_gp_cg->default_groups);
3226 if (alua_cg)
3227 kfree(alua_cg->default_groups);
3228 if (hba_cg)
3229 kfree(hba_cg->default_groups);
3230 kfree(target_cg->default_groups);
3231 release_se_kmem_caches();
3232 return ret;
3233}
3234
3235static void __exit target_core_exit_configfs(void)
3236{
3237 struct configfs_subsystem *subsys;
3238 struct config_group *hba_cg, *alua_cg, *lu_gp_cg;
3239 struct config_item *item;
3240 int i;
3241
3242 subsys = target_core_subsystem[0];
3243
3244 lu_gp_cg = &alua_lu_gps_group;
3245 for (i = 0; lu_gp_cg->default_groups[i]; i++) {
3246 item = &lu_gp_cg->default_groups[i]->cg_item;
3247 lu_gp_cg->default_groups[i] = NULL;
3248 config_item_put(item);
3249 }
3250 kfree(lu_gp_cg->default_groups);
3251 lu_gp_cg->default_groups = NULL;
3252
3253 alua_cg = &alua_group;
3254 for (i = 0; alua_cg->default_groups[i]; i++) {
3255 item = &alua_cg->default_groups[i]->cg_item;
3256 alua_cg->default_groups[i] = NULL;
3257 config_item_put(item);
3258 }
3259 kfree(alua_cg->default_groups);
3260 alua_cg->default_groups = NULL;
3261
3262 hba_cg = &target_core_hbagroup;
3263 for (i = 0; hba_cg->default_groups[i]; i++) {
3264 item = &hba_cg->default_groups[i]->cg_item;
3265 hba_cg->default_groups[i] = NULL;
3266 config_item_put(item);
3267 }
3268 kfree(hba_cg->default_groups);
3269 hba_cg->default_groups = NULL;
3270
3271
3272
3273
3274 configfs_unregister_subsystem(subsys);
3275 kfree(subsys->su_group.default_groups);
3276
3277 core_alua_free_lu_gp(default_lu_gp);
3278 default_lu_gp = NULL;
3279
3280 pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric"
3281 " Infrastructure\n");
3282
3283 core_dev_release_virtual_lun0();
3284 rd_module_exit();
3285 release_se_kmem_caches();
3286}
3287
3288MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS");
3289MODULE_AUTHOR("nab@Linux-iSCSI.org");
3290MODULE_LICENSE("GPL");
3291
3292module_init(target_core_init_configfs);
3293module_exit(target_core_exit_configfs);
3294
