1 // SPDX-License-Identifier: GPL-2.0
3 * Sysfs interface for the NVMe core driver.
5 * Copyright (c) 2011-2014, Intel Corporation.
8 #include <linux/nvme-auth.h>
13 static ssize_t nvme_sysfs_reset(struct device *dev,
14 struct device_attribute *attr, const char *buf,
17 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
20 ret = nvme_reset_ctrl_sync(ctrl);
25 static DEVICE_ATTR(reset_controller, S_IWUSR, NULL, nvme_sysfs_reset);
27 static ssize_t nvme_sysfs_rescan(struct device *dev,
28 struct device_attribute *attr, const char *buf,
31 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
33 nvme_queue_scan(ctrl);
36 static DEVICE_ATTR(rescan_controller, S_IWUSR, NULL, nvme_sysfs_rescan);
38 static ssize_t nvme_adm_passthru_err_log_enabled_show(struct device *dev,
39 struct device_attribute *attr, char *buf)
41 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
43 return sysfs_emit(buf,
44 ctrl->passthru_err_log_enabled ? "on\n" : "off\n");
47 static ssize_t nvme_adm_passthru_err_log_enabled_store(struct device *dev,
48 struct device_attribute *attr, const char *buf, size_t count)
50 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
51 bool passthru_err_log_enabled;
54 err = kstrtobool(buf, &passthru_err_log_enabled);
58 ctrl->passthru_err_log_enabled = passthru_err_log_enabled;
63 static inline struct nvme_ns_head *dev_to_ns_head(struct device *dev)
65 struct gendisk *disk = dev_to_disk(dev);
67 if (nvme_disk_is_ns_head(disk))
68 return disk->private_data;
69 return nvme_get_ns_from_dev(dev)->head;
72 static ssize_t nvme_io_passthru_err_log_enabled_show(struct device *dev,
73 struct device_attribute *attr, char *buf)
75 struct nvme_ns_head *head = dev_to_ns_head(dev);
77 return sysfs_emit(buf, head->passthru_err_log_enabled ? "on\n" : "off\n");
80 static ssize_t nvme_io_passthru_err_log_enabled_store(struct device *dev,
81 struct device_attribute *attr, const char *buf, size_t count)
83 struct nvme_ns_head *head = dev_to_ns_head(dev);
84 bool passthru_err_log_enabled;
87 err = kstrtobool(buf, &passthru_err_log_enabled);
90 head->passthru_err_log_enabled = passthru_err_log_enabled;
95 static struct device_attribute dev_attr_adm_passthru_err_log_enabled = \
96 __ATTR(passthru_err_log_enabled, S_IRUGO | S_IWUSR, \
97 nvme_adm_passthru_err_log_enabled_show, nvme_adm_passthru_err_log_enabled_store);
99 static struct device_attribute dev_attr_io_passthru_err_log_enabled = \
100 __ATTR(passthru_err_log_enabled, S_IRUGO | S_IWUSR, \
101 nvme_io_passthru_err_log_enabled_show, nvme_io_passthru_err_log_enabled_store);
103 static ssize_t wwid_show(struct device *dev, struct device_attribute *attr,
106 struct nvme_ns_head *head = dev_to_ns_head(dev);
107 struct nvme_ns_ids *ids = &head->ids;
108 struct nvme_subsystem *subsys = head->subsys;
109 int serial_len = sizeof(subsys->serial);
110 int model_len = sizeof(subsys->model);
112 if (!uuid_is_null(&ids->uuid))
113 return sysfs_emit(buf, "uuid.%pU\n", &ids->uuid);
115 if (memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
116 return sysfs_emit(buf, "eui.%16phN\n", ids->nguid);
118 if (memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))
119 return sysfs_emit(buf, "eui.%8phN\n", ids->eui64);
121 while (serial_len > 0 && (subsys->serial[serial_len - 1] == ' ' ||
122 subsys->serial[serial_len - 1] == '\0'))
124 while (model_len > 0 && (subsys->model[model_len - 1] == ' ' ||
125 subsys->model[model_len - 1] == '\0'))
128 return sysfs_emit(buf, "nvme.%04x-%*phN-%*phN-%08x\n", subsys->vendor_id,
129 serial_len, subsys->serial, model_len, subsys->model,
132 static DEVICE_ATTR_RO(wwid);
134 static ssize_t nguid_show(struct device *dev, struct device_attribute *attr,
137 return sysfs_emit(buf, "%pU\n", dev_to_ns_head(dev)->ids.nguid);
139 static DEVICE_ATTR_RO(nguid);
141 static ssize_t uuid_show(struct device *dev, struct device_attribute *attr,
144 struct nvme_ns_ids *ids = &dev_to_ns_head(dev)->ids;
146 /* For backward compatibility expose the NGUID to userspace if
147 * we have no UUID set
149 if (uuid_is_null(&ids->uuid)) {
151 "No UUID available providing old NGUID\n");
152 return sysfs_emit(buf, "%pU\n", ids->nguid);
154 return sysfs_emit(buf, "%pU\n", &ids->uuid);
156 static DEVICE_ATTR_RO(uuid);
158 static ssize_t eui_show(struct device *dev, struct device_attribute *attr,
161 return sysfs_emit(buf, "%8ph\n", dev_to_ns_head(dev)->ids.eui64);
163 static DEVICE_ATTR_RO(eui);
165 static ssize_t nsid_show(struct device *dev, struct device_attribute *attr,
168 return sysfs_emit(buf, "%d\n", dev_to_ns_head(dev)->ns_id);
170 static DEVICE_ATTR_RO(nsid);
172 static ssize_t csi_show(struct device *dev, struct device_attribute *attr,
175 return sysfs_emit(buf, "%u\n", dev_to_ns_head(dev)->ids.csi);
177 static DEVICE_ATTR_RO(csi);
179 static ssize_t metadata_bytes_show(struct device *dev,
180 struct device_attribute *attr, char *buf)
182 return sysfs_emit(buf, "%u\n", dev_to_ns_head(dev)->ms);
184 static DEVICE_ATTR_RO(metadata_bytes);
186 static int ns_head_update_nuse(struct nvme_ns_head *head)
188 struct nvme_id_ns *id;
190 int srcu_idx, ret = -EWOULDBLOCK;
192 /* Avoid issuing commands too often by rate limiting the update */
193 if (!__ratelimit(&head->rs_nuse))
196 srcu_idx = srcu_read_lock(&head->srcu);
197 ns = nvme_find_path(head);
201 ret = nvme_identify_ns(ns->ctrl, head->ns_id, &id);
205 head->nuse = le64_to_cpu(id->nuse);
209 srcu_read_unlock(&head->srcu, srcu_idx);
213 static int ns_update_nuse(struct nvme_ns *ns)
215 struct nvme_id_ns *id;
218 /* Avoid issuing commands too often by rate limiting the update. */
219 if (!__ratelimit(&ns->head->rs_nuse))
222 ret = nvme_identify_ns(ns->ctrl, ns->head->ns_id, &id);
226 ns->head->nuse = le64_to_cpu(id->nuse);
234 static ssize_t nuse_show(struct device *dev, struct device_attribute *attr,
237 struct nvme_ns_head *head = dev_to_ns_head(dev);
238 struct gendisk *disk = dev_to_disk(dev);
239 struct block_device *bdev = disk->part0;
242 if (IS_ENABLED(CONFIG_NVME_MULTIPATH) &&
243 bdev->bd_disk->fops == &nvme_ns_head_ops)
244 ret = ns_head_update_nuse(head);
246 ret = ns_update_nuse(bdev->bd_disk->private_data);
250 return sysfs_emit(buf, "%llu\n", head->nuse);
252 static DEVICE_ATTR_RO(nuse);
254 static struct attribute *nvme_ns_attrs[] = {
257 &dev_attr_nguid.attr,
261 &dev_attr_metadata_bytes.attr,
263 #ifdef CONFIG_NVME_MULTIPATH
264 &dev_attr_ana_grpid.attr,
265 &dev_attr_ana_state.attr,
267 &dev_attr_io_passthru_err_log_enabled.attr,
271 static umode_t nvme_ns_attrs_are_visible(struct kobject *kobj,
272 struct attribute *a, int n)
274 struct device *dev = container_of(kobj, struct device, kobj);
275 struct nvme_ns_ids *ids = &dev_to_ns_head(dev)->ids;
277 if (a == &dev_attr_uuid.attr) {
278 if (uuid_is_null(&ids->uuid) &&
279 !memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
282 if (a == &dev_attr_nguid.attr) {
283 if (!memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
286 if (a == &dev_attr_eui.attr) {
287 if (!memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))
290 #ifdef CONFIG_NVME_MULTIPATH
291 if (a == &dev_attr_ana_grpid.attr || a == &dev_attr_ana_state.attr) {
293 if (nvme_disk_is_ns_head(dev_to_disk(dev)))
295 if (!nvme_ctrl_use_ana(nvme_get_ns_from_dev(dev)->ctrl))
302 static const struct attribute_group nvme_ns_attr_group = {
303 .attrs = nvme_ns_attrs,
304 .is_visible = nvme_ns_attrs_are_visible,
307 const struct attribute_group *nvme_ns_attr_groups[] = {
312 #define nvme_show_str_function(field) \
313 static ssize_t field##_show(struct device *dev, \
314 struct device_attribute *attr, char *buf) \
316 struct nvme_ctrl *ctrl = dev_get_drvdata(dev); \
317 return sysfs_emit(buf, "%.*s\n", \
318 (int)sizeof(ctrl->subsys->field), ctrl->subsys->field); \
320 static DEVICE_ATTR(field, S_IRUGO, field##_show, NULL);
322 nvme_show_str_function(model);
323 nvme_show_str_function(serial);
324 nvme_show_str_function(firmware_rev);
326 #define nvme_show_int_function(field) \
327 static ssize_t field##_show(struct device *dev, \
328 struct device_attribute *attr, char *buf) \
330 struct nvme_ctrl *ctrl = dev_get_drvdata(dev); \
331 return sysfs_emit(buf, "%d\n", ctrl->field); \
333 static DEVICE_ATTR(field, S_IRUGO, field##_show, NULL);
335 nvme_show_int_function(cntlid);
336 nvme_show_int_function(numa_node);
337 nvme_show_int_function(queue_count);
338 nvme_show_int_function(sqsize);
339 nvme_show_int_function(kato);
341 static ssize_t nvme_sysfs_delete(struct device *dev,
342 struct device_attribute *attr, const char *buf,
345 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
347 if (!test_bit(NVME_CTRL_STARTED_ONCE, &ctrl->flags))
350 if (device_remove_file_self(dev, attr))
351 nvme_delete_ctrl_sync(ctrl);
354 static DEVICE_ATTR(delete_controller, S_IWUSR, NULL, nvme_sysfs_delete);
356 static ssize_t nvme_sysfs_show_transport(struct device *dev,
357 struct device_attribute *attr,
360 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
362 return sysfs_emit(buf, "%s\n", ctrl->ops->name);
364 static DEVICE_ATTR(transport, S_IRUGO, nvme_sysfs_show_transport, NULL);
366 static ssize_t nvme_sysfs_show_state(struct device *dev,
367 struct device_attribute *attr,
370 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
371 unsigned state = (unsigned)nvme_ctrl_state(ctrl);
372 static const char *const state_name[] = {
373 [NVME_CTRL_NEW] = "new",
374 [NVME_CTRL_LIVE] = "live",
375 [NVME_CTRL_RESETTING] = "resetting",
376 [NVME_CTRL_CONNECTING] = "connecting",
377 [NVME_CTRL_DELETING] = "deleting",
378 [NVME_CTRL_DELETING_NOIO]= "deleting (no IO)",
379 [NVME_CTRL_DEAD] = "dead",
382 if (state < ARRAY_SIZE(state_name) && state_name[state])
383 return sysfs_emit(buf, "%s\n", state_name[state]);
385 return sysfs_emit(buf, "unknown state\n");
388 static DEVICE_ATTR(state, S_IRUGO, nvme_sysfs_show_state, NULL);
390 static ssize_t nvme_sysfs_show_subsysnqn(struct device *dev,
391 struct device_attribute *attr,
394 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
396 return sysfs_emit(buf, "%s\n", ctrl->subsys->subnqn);
398 static DEVICE_ATTR(subsysnqn, S_IRUGO, nvme_sysfs_show_subsysnqn, NULL);
400 static ssize_t nvme_sysfs_show_hostnqn(struct device *dev,
401 struct device_attribute *attr,
404 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
406 return sysfs_emit(buf, "%s\n", ctrl->opts->host->nqn);
408 static DEVICE_ATTR(hostnqn, S_IRUGO, nvme_sysfs_show_hostnqn, NULL);
410 static ssize_t nvme_sysfs_show_hostid(struct device *dev,
411 struct device_attribute *attr,
414 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
416 return sysfs_emit(buf, "%pU\n", &ctrl->opts->host->id);
418 static DEVICE_ATTR(hostid, S_IRUGO, nvme_sysfs_show_hostid, NULL);
420 static ssize_t nvme_sysfs_show_address(struct device *dev,
421 struct device_attribute *attr,
424 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
426 return ctrl->ops->get_address(ctrl, buf, PAGE_SIZE);
428 static DEVICE_ATTR(address, S_IRUGO, nvme_sysfs_show_address, NULL);
430 static ssize_t nvme_ctrl_loss_tmo_show(struct device *dev,
431 struct device_attribute *attr, char *buf)
433 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
434 struct nvmf_ctrl_options *opts = ctrl->opts;
436 if (ctrl->opts->max_reconnects == -1)
437 return sysfs_emit(buf, "off\n");
438 return sysfs_emit(buf, "%d\n",
439 opts->max_reconnects * opts->reconnect_delay);
442 static ssize_t nvme_ctrl_loss_tmo_store(struct device *dev,
443 struct device_attribute *attr, const char *buf, size_t count)
445 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
446 struct nvmf_ctrl_options *opts = ctrl->opts;
447 int ctrl_loss_tmo, err;
449 err = kstrtoint(buf, 10, &ctrl_loss_tmo);
453 if (ctrl_loss_tmo < 0)
454 opts->max_reconnects = -1;
456 opts->max_reconnects = DIV_ROUND_UP(ctrl_loss_tmo,
457 opts->reconnect_delay);
460 static DEVICE_ATTR(ctrl_loss_tmo, S_IRUGO | S_IWUSR,
461 nvme_ctrl_loss_tmo_show, nvme_ctrl_loss_tmo_store);
463 static ssize_t nvme_ctrl_reconnect_delay_show(struct device *dev,
464 struct device_attribute *attr, char *buf)
466 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
468 if (ctrl->opts->reconnect_delay == -1)
469 return sysfs_emit(buf, "off\n");
470 return sysfs_emit(buf, "%d\n", ctrl->opts->reconnect_delay);
473 static ssize_t nvme_ctrl_reconnect_delay_store(struct device *dev,
474 struct device_attribute *attr, const char *buf, size_t count)
476 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
480 err = kstrtou32(buf, 10, &v);
484 ctrl->opts->reconnect_delay = v;
487 static DEVICE_ATTR(reconnect_delay, S_IRUGO | S_IWUSR,
488 nvme_ctrl_reconnect_delay_show, nvme_ctrl_reconnect_delay_store);
490 static ssize_t nvme_ctrl_fast_io_fail_tmo_show(struct device *dev,
491 struct device_attribute *attr, char *buf)
493 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
495 if (ctrl->opts->fast_io_fail_tmo == -1)
496 return sysfs_emit(buf, "off\n");
497 return sysfs_emit(buf, "%d\n", ctrl->opts->fast_io_fail_tmo);
500 static ssize_t nvme_ctrl_fast_io_fail_tmo_store(struct device *dev,
501 struct device_attribute *attr, const char *buf, size_t count)
503 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
504 struct nvmf_ctrl_options *opts = ctrl->opts;
505 int fast_io_fail_tmo, err;
507 err = kstrtoint(buf, 10, &fast_io_fail_tmo);
511 if (fast_io_fail_tmo < 0)
512 opts->fast_io_fail_tmo = -1;
514 opts->fast_io_fail_tmo = fast_io_fail_tmo;
517 static DEVICE_ATTR(fast_io_fail_tmo, S_IRUGO | S_IWUSR,
518 nvme_ctrl_fast_io_fail_tmo_show, nvme_ctrl_fast_io_fail_tmo_store);
520 static ssize_t cntrltype_show(struct device *dev,
521 struct device_attribute *attr, char *buf)
523 static const char * const type[] = {
524 [NVME_CTRL_IO] = "io\n",
525 [NVME_CTRL_DISC] = "discovery\n",
526 [NVME_CTRL_ADMIN] = "admin\n",
528 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
530 if (ctrl->cntrltype > NVME_CTRL_ADMIN || !type[ctrl->cntrltype])
531 return sysfs_emit(buf, "reserved\n");
533 return sysfs_emit(buf, type[ctrl->cntrltype]);
535 static DEVICE_ATTR_RO(cntrltype);
537 static ssize_t dctype_show(struct device *dev,
538 struct device_attribute *attr, char *buf)
540 static const char * const type[] = {
541 [NVME_DCTYPE_NOT_REPORTED] = "none\n",
542 [NVME_DCTYPE_DDC] = "ddc\n",
543 [NVME_DCTYPE_CDC] = "cdc\n",
545 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
547 if (ctrl->dctype > NVME_DCTYPE_CDC || !type[ctrl->dctype])
548 return sysfs_emit(buf, "reserved\n");
550 return sysfs_emit(buf, type[ctrl->dctype]);
552 static DEVICE_ATTR_RO(dctype);
554 #ifdef CONFIG_NVME_HOST_AUTH
555 static ssize_t nvme_ctrl_dhchap_secret_show(struct device *dev,
556 struct device_attribute *attr, char *buf)
558 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
559 struct nvmf_ctrl_options *opts = ctrl->opts;
561 if (!opts->dhchap_secret)
562 return sysfs_emit(buf, "none\n");
563 return sysfs_emit(buf, "%s\n", opts->dhchap_secret);
566 static ssize_t nvme_ctrl_dhchap_secret_store(struct device *dev,
567 struct device_attribute *attr, const char *buf, size_t count)
569 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
570 struct nvmf_ctrl_options *opts = ctrl->opts;
573 if (!ctrl->opts->dhchap_secret)
577 if (memcmp(buf, "DHHC-1:", 7))
580 dhchap_secret = kzalloc(count + 1, GFP_KERNEL);
583 memcpy(dhchap_secret, buf, count);
584 nvme_auth_stop(ctrl);
585 if (strcmp(dhchap_secret, opts->dhchap_secret)) {
586 struct nvme_dhchap_key *key, *host_key;
589 ret = nvme_auth_generate_key(dhchap_secret, &key);
591 kfree(dhchap_secret);
594 kfree(opts->dhchap_secret);
595 opts->dhchap_secret = dhchap_secret;
596 host_key = ctrl->host_key;
597 mutex_lock(&ctrl->dhchap_auth_mutex);
598 ctrl->host_key = key;
599 mutex_unlock(&ctrl->dhchap_auth_mutex);
600 nvme_auth_free_key(host_key);
602 kfree(dhchap_secret);
603 /* Start re-authentication */
604 dev_info(ctrl->device, "re-authenticating controller\n");
605 queue_work(nvme_wq, &ctrl->dhchap_auth_work);
610 static DEVICE_ATTR(dhchap_secret, S_IRUGO | S_IWUSR,
611 nvme_ctrl_dhchap_secret_show, nvme_ctrl_dhchap_secret_store);
613 static ssize_t nvme_ctrl_dhchap_ctrl_secret_show(struct device *dev,
614 struct device_attribute *attr, char *buf)
616 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
617 struct nvmf_ctrl_options *opts = ctrl->opts;
619 if (!opts->dhchap_ctrl_secret)
620 return sysfs_emit(buf, "none\n");
621 return sysfs_emit(buf, "%s\n", opts->dhchap_ctrl_secret);
624 static ssize_t nvme_ctrl_dhchap_ctrl_secret_store(struct device *dev,
625 struct device_attribute *attr, const char *buf, size_t count)
627 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
628 struct nvmf_ctrl_options *opts = ctrl->opts;
631 if (!ctrl->opts->dhchap_ctrl_secret)
635 if (memcmp(buf, "DHHC-1:", 7))
638 dhchap_secret = kzalloc(count + 1, GFP_KERNEL);
641 memcpy(dhchap_secret, buf, count);
642 nvme_auth_stop(ctrl);
643 if (strcmp(dhchap_secret, opts->dhchap_ctrl_secret)) {
644 struct nvme_dhchap_key *key, *ctrl_key;
647 ret = nvme_auth_generate_key(dhchap_secret, &key);
649 kfree(dhchap_secret);
652 kfree(opts->dhchap_ctrl_secret);
653 opts->dhchap_ctrl_secret = dhchap_secret;
654 ctrl_key = ctrl->ctrl_key;
655 mutex_lock(&ctrl->dhchap_auth_mutex);
656 ctrl->ctrl_key = key;
657 mutex_unlock(&ctrl->dhchap_auth_mutex);
658 nvme_auth_free_key(ctrl_key);
660 kfree(dhchap_secret);
661 /* Start re-authentication */
662 dev_info(ctrl->device, "re-authenticating controller\n");
663 queue_work(nvme_wq, &ctrl->dhchap_auth_work);
668 static DEVICE_ATTR(dhchap_ctrl_secret, S_IRUGO | S_IWUSR,
669 nvme_ctrl_dhchap_ctrl_secret_show, nvme_ctrl_dhchap_ctrl_secret_store);
672 #ifdef CONFIG_NVME_TCP_TLS
673 static ssize_t tls_key_show(struct device *dev,
674 struct device_attribute *attr, char *buf)
676 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
680 return sysfs_emit(buf, "%08x", key_serial(ctrl->tls_key));
682 static DEVICE_ATTR_RO(tls_key);
685 static struct attribute *nvme_dev_attrs[] = {
686 &dev_attr_reset_controller.attr,
687 &dev_attr_rescan_controller.attr,
688 &dev_attr_model.attr,
689 &dev_attr_serial.attr,
690 &dev_attr_firmware_rev.attr,
691 &dev_attr_cntlid.attr,
692 &dev_attr_delete_controller.attr,
693 &dev_attr_transport.attr,
694 &dev_attr_subsysnqn.attr,
695 &dev_attr_address.attr,
696 &dev_attr_state.attr,
697 &dev_attr_numa_node.attr,
698 &dev_attr_queue_count.attr,
699 &dev_attr_sqsize.attr,
700 &dev_attr_hostnqn.attr,
701 &dev_attr_hostid.attr,
702 &dev_attr_ctrl_loss_tmo.attr,
703 &dev_attr_reconnect_delay.attr,
704 &dev_attr_fast_io_fail_tmo.attr,
706 &dev_attr_cntrltype.attr,
707 &dev_attr_dctype.attr,
708 #ifdef CONFIG_NVME_HOST_AUTH
709 &dev_attr_dhchap_secret.attr,
710 &dev_attr_dhchap_ctrl_secret.attr,
712 #ifdef CONFIG_NVME_TCP_TLS
713 &dev_attr_tls_key.attr,
715 &dev_attr_adm_passthru_err_log_enabled.attr,
719 static umode_t nvme_dev_attrs_are_visible(struct kobject *kobj,
720 struct attribute *a, int n)
722 struct device *dev = container_of(kobj, struct device, kobj);
723 struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
725 if (a == &dev_attr_delete_controller.attr && !ctrl->ops->delete_ctrl)
727 if (a == &dev_attr_address.attr && !ctrl->ops->get_address)
729 if (a == &dev_attr_hostnqn.attr && !ctrl->opts)
731 if (a == &dev_attr_hostid.attr && !ctrl->opts)
733 if (a == &dev_attr_ctrl_loss_tmo.attr && !ctrl->opts)
735 if (a == &dev_attr_reconnect_delay.attr && !ctrl->opts)
737 if (a == &dev_attr_fast_io_fail_tmo.attr && !ctrl->opts)
739 #ifdef CONFIG_NVME_HOST_AUTH
740 if (a == &dev_attr_dhchap_secret.attr && !ctrl->opts)
742 if (a == &dev_attr_dhchap_ctrl_secret.attr && !ctrl->opts)
745 #ifdef CONFIG_NVME_TCP_TLS
746 if (a == &dev_attr_tls_key.attr &&
747 (!ctrl->opts || strcmp(ctrl->opts->transport, "tcp")))
754 const struct attribute_group nvme_dev_attrs_group = {
755 .attrs = nvme_dev_attrs,
756 .is_visible = nvme_dev_attrs_are_visible,
758 EXPORT_SYMBOL_GPL(nvme_dev_attrs_group);
760 const struct attribute_group *nvme_dev_attr_groups[] = {
761 &nvme_dev_attrs_group,
765 #define SUBSYS_ATTR_RO(_name, _mode, _show) \
766 struct device_attribute subsys_attr_##_name = \
767 __ATTR(_name, _mode, _show, NULL)
769 static ssize_t nvme_subsys_show_nqn(struct device *dev,
770 struct device_attribute *attr,
773 struct nvme_subsystem *subsys =
774 container_of(dev, struct nvme_subsystem, dev);
776 return sysfs_emit(buf, "%s\n", subsys->subnqn);
778 static SUBSYS_ATTR_RO(subsysnqn, S_IRUGO, nvme_subsys_show_nqn);
780 static ssize_t nvme_subsys_show_type(struct device *dev,
781 struct device_attribute *attr,
784 struct nvme_subsystem *subsys =
785 container_of(dev, struct nvme_subsystem, dev);
787 switch (subsys->subtype) {
789 return sysfs_emit(buf, "discovery\n");
791 return sysfs_emit(buf, "nvm\n");
793 return sysfs_emit(buf, "reserved\n");
796 static SUBSYS_ATTR_RO(subsystype, S_IRUGO, nvme_subsys_show_type);
798 #define nvme_subsys_show_str_function(field) \
799 static ssize_t subsys_##field##_show(struct device *dev, \
800 struct device_attribute *attr, char *buf) \
802 struct nvme_subsystem *subsys = \
803 container_of(dev, struct nvme_subsystem, dev); \
804 return sysfs_emit(buf, "%.*s\n", \
805 (int)sizeof(subsys->field), subsys->field); \
807 static SUBSYS_ATTR_RO(field, S_IRUGO, subsys_##field##_show);
809 nvme_subsys_show_str_function(model);
810 nvme_subsys_show_str_function(serial);
811 nvme_subsys_show_str_function(firmware_rev);
813 static struct attribute *nvme_subsys_attrs[] = {
814 &subsys_attr_model.attr,
815 &subsys_attr_serial.attr,
816 &subsys_attr_firmware_rev.attr,
817 &subsys_attr_subsysnqn.attr,
818 &subsys_attr_subsystype.attr,
819 #ifdef CONFIG_NVME_MULTIPATH
820 &subsys_attr_iopolicy.attr,
825 static const struct attribute_group nvme_subsys_attrs_group = {
826 .attrs = nvme_subsys_attrs,
829 const struct attribute_group *nvme_subsys_attrs_groups[] = {
830 &nvme_subsys_attrs_group,