1/*
2 * zfcp device driver
3 *
4 * sysfs attributes.
5 *
6 * Copyright IBM Corp. 2008, 2010
7 */
8
9#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <linux/slab.h>
13#include "zfcp_ext.h"
14
15#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
16struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
17							    _show, _store)
18#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value)	       \
19static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev,	       \
20						   struct device_attribute *at,\
21						   char *buf)		       \
22{									       \
23	struct _feat_def *_feat = container_of(dev, struct _feat_def, dev);    \
24									       \
25	return sprintf(buf, _format, _value);				       \
26}									       \
27static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO,				       \
28		     zfcp_sysfs_##_feat##_##_name##_show, NULL);
29
30#define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value)		       \
31static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev,	       \
32						   struct device_attribute *at,\
33						   char *buf)		       \
34{									       \
35	return sprintf(buf, _format, _value);				       \
36}									       \
37static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO,				       \
38		     zfcp_sysfs_##_feat##_##_name##_show, NULL);
39
40#define ZFCP_DEFINE_A_ATTR(_name, _format, _value)			     \
41static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,	     \
42						 struct device_attribute *at,\
43						 char *buf)		     \
44{									     \
45	struct ccw_device *cdev = to_ccwdev(dev);			     \
46	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);	     \
47	int i;								     \
48									     \
49	if (!adapter)							     \
50		return -ENODEV;						     \
51									     \
52	i = sprintf(buf, _format, _value);				     \
53	zfcp_ccw_adapter_put(adapter);					     \
54	return i;							     \
55}									     \
56static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO,				     \
57		     zfcp_sysfs_adapter_##_name##_show, NULL);
58
59ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
60ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
61		   (unsigned long long) adapter->peer_wwnn);
62ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
63		   (unsigned long long) adapter->peer_wwpn);
64ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
65ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
66ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
67ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
68ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
69					 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
70
71ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
72		 atomic_read(&port->status));
73ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
74		 (atomic_read(&port->status) &
75		  ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
76ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
77		 (atomic_read(&port->status) &
78		  ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
79
80ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
81		 zfcp_unit_sdev_status(unit));
82ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
83		 (zfcp_unit_sdev_status(unit) &
84		  ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
85ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
86		 (zfcp_unit_sdev_status(unit) &
87		  ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
88ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
89ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
90
91static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
92					   struct device_attribute *attr,
93					   char *buf)
94{
95	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
96
97	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
98		return sprintf(buf, "1\n");
99
100	return sprintf(buf, "0\n");
101}
102
103static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
104					    struct device_attribute *attr,
105					    const char *buf, size_t count)
106{
107	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
108	unsigned long val;
109
110	if (kstrtoul(buf, 0, &val) || val != 0)
111		return -EINVAL;
112
113	zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
114	zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
115	zfcp_erp_wait(port->adapter);
116
117	return count;
118}
119static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
120		     zfcp_sysfs_port_failed_show,
121		     zfcp_sysfs_port_failed_store);
122
123static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
124					   struct device_attribute *attr,
125					   char *buf)
126{
127	struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
128	struct scsi_device *sdev;
129	unsigned int status, failed = 1;
130
131	sdev = zfcp_unit_sdev(unit);
132	if (sdev) {
133		status = atomic_read(&sdev_to_zfcp(sdev)->status);
134		failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
135		scsi_device_put(sdev);
136	}
137
138	return sprintf(buf, "%d\n", failed);
139}
140
141static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
142					    struct device_attribute *attr,
143					    const char *buf, size_t count)
144{
145	struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
146	unsigned long val;
147	struct scsi_device *sdev;
148
149	if (kstrtoul(buf, 0, &val) || val != 0)
150		return -EINVAL;
151
152	sdev = zfcp_unit_sdev(unit);
153	if (sdev) {
154		zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
155		zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
156				    "syufai2");
157		zfcp_erp_wait(unit->port->adapter);
158	} else
159		zfcp_unit_scsi_scan(unit);
160
161	return count;
162}
163static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
164		     zfcp_sysfs_unit_failed_show,
165		     zfcp_sysfs_unit_failed_store);
166
167static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
168					      struct device_attribute *attr,
169					      char *buf)
170{
171	struct ccw_device *cdev = to_ccwdev(dev);
172	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
173	int i;
174
175	if (!adapter)
176		return -ENODEV;
177
178	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
179		i = sprintf(buf, "1\n");
180	else
181		i = sprintf(buf, "0\n");
182
183	zfcp_ccw_adapter_put(adapter);
184	return i;
185}
186
187static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
188					       struct device_attribute *attr,
189					       const char *buf, size_t count)
190{
191	struct ccw_device *cdev = to_ccwdev(dev);
192	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
193	unsigned long val;
194	int retval = 0;
195
196	if (!adapter)
197		return -ENODEV;
198
199	if (kstrtoul(buf, 0, &val) || val != 0) {
200		retval = -EINVAL;
201		goto out;
202	}
203
204	zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
205	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
206				"syafai2");
207	zfcp_erp_wait(adapter);
208out:
209	zfcp_ccw_adapter_put(adapter);
210	return retval ? retval : (ssize_t) count;
211}
212static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
213		     zfcp_sysfs_adapter_failed_show,
214		     zfcp_sysfs_adapter_failed_store);
215
216static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
217					    struct device_attribute *attr,
218					    const char *buf, size_t count)
219{
220	struct ccw_device *cdev = to_ccwdev(dev);
221	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
222
223	if (!adapter)
224		return -ENODEV;
225
226	/* sync the user-space- with the kernel-invocation of scan_work */
227	queue_work(adapter->work_queue, &adapter->scan_work);
228	flush_work(&adapter->scan_work);
229	zfcp_ccw_adapter_put(adapter);
230
231	return (ssize_t) count;
232}
233static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
234		     zfcp_sysfs_port_rescan_store);
235
236DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
237
238static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
239					    struct device_attribute *attr,
240					    const char *buf, size_t count)
241{
242	struct ccw_device *cdev = to_ccwdev(dev);
243	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
244	struct zfcp_port *port;
245	u64 wwpn;
246	int retval = -EINVAL;
247
248	if (!adapter)
249		return -ENODEV;
250
251	if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
252		goto out;
253
254	port = zfcp_get_port_by_wwpn(adapter, wwpn);
255	if (!port)
256		goto out;
257	else
258		retval = 0;
259
260	mutex_lock(&zfcp_sysfs_port_units_mutex);
261	if (atomic_read(&port->units) > 0) {
262		retval = -EBUSY;
263		mutex_unlock(&zfcp_sysfs_port_units_mutex);
264		goto out;
265	}
266	/* port is about to be removed, so no more unit_add */
267	atomic_set(&port->units, -1);
268	mutex_unlock(&zfcp_sysfs_port_units_mutex);
269
270	write_lock_irq(&adapter->port_list_lock);
271	list_del(&port->list);
272	write_unlock_irq(&adapter->port_list_lock);
273
274	put_device(&port->dev);
275
276	zfcp_erp_port_shutdown(port, 0, "syprs_1");
277	device_unregister(&port->dev);
278 out:
279	zfcp_ccw_adapter_put(adapter);
280	return retval ? retval : (ssize_t) count;
281}
282static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
283		     zfcp_sysfs_port_remove_store);
284
285static struct attribute *zfcp_adapter_attrs[] = {
286	&dev_attr_adapter_failed.attr,
287	&dev_attr_adapter_in_recovery.attr,
288	&dev_attr_adapter_port_remove.attr,
289	&dev_attr_adapter_port_rescan.attr,
290	&dev_attr_adapter_peer_wwnn.attr,
291	&dev_attr_adapter_peer_wwpn.attr,
292	&dev_attr_adapter_peer_d_id.attr,
293	&dev_attr_adapter_card_version.attr,
294	&dev_attr_adapter_lic_version.attr,
295	&dev_attr_adapter_status.attr,
296	&dev_attr_adapter_hardware_version.attr,
297	NULL
298};
299
300struct attribute_group zfcp_sysfs_adapter_attrs = {
301	.attrs = zfcp_adapter_attrs,
302};
303
304static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
305					 struct device_attribute *attr,
306					 const char *buf, size_t count)
307{
308	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
309	u64 fcp_lun;
310	int retval;
311
312	if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
313		return -EINVAL;
314
315	retval = zfcp_unit_add(port, fcp_lun);
316	if (retval)
317		return retval;
318
319	return count;
320}
321static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
322
323static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
324					    struct device_attribute *attr,
325					    const char *buf, size_t count)
326{
327	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
328	u64 fcp_lun;
329
330	if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
331		return -EINVAL;
332
333	if (zfcp_unit_remove(port, fcp_lun))
334		return -EINVAL;
335
336	return count;
337}
338static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
339
340static struct attribute *zfcp_port_attrs[] = {
341	&dev_attr_unit_add.attr,
342	&dev_attr_unit_remove.attr,
343	&dev_attr_port_failed.attr,
344	&dev_attr_port_in_recovery.attr,
345	&dev_attr_port_status.attr,
346	&dev_attr_port_access_denied.attr,
347	NULL
348};
349static struct attribute_group zfcp_port_attr_group = {
350	.attrs = zfcp_port_attrs,
351};
352const struct attribute_group *zfcp_port_attr_groups[] = {
353	&zfcp_port_attr_group,
354	NULL,
355};
356
357static struct attribute *zfcp_unit_attrs[] = {
358	&dev_attr_unit_failed.attr,
359	&dev_attr_unit_in_recovery.attr,
360	&dev_attr_unit_status.attr,
361	&dev_attr_unit_access_denied.attr,
362	&dev_attr_unit_access_shared.attr,
363	&dev_attr_unit_access_readonly.attr,
364	NULL
365};
366static struct attribute_group zfcp_unit_attr_group = {
367	.attrs = zfcp_unit_attrs,
368};
369const struct attribute_group *zfcp_unit_attr_groups[] = {
370	&zfcp_unit_attr_group,
371	NULL,
372};
373
374#define ZFCP_DEFINE_LATENCY_ATTR(_name) 				\
375static ssize_t								\
376zfcp_sysfs_unit_##_name##_latency_show(struct device *dev,		\
377				       struct device_attribute *attr,	\
378				       char *buf) {			\
379	struct scsi_device *sdev = to_scsi_device(dev);			\
380	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);		\
381	struct zfcp_latencies *lat = &zfcp_sdev->latencies;		\
382	struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;	\
383	unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc;	\
384									\
385	spin_lock_bh(&lat->lock);					\
386	fsum = lat->_name.fabric.sum * adapter->timer_ticks;		\
387	fmin = lat->_name.fabric.min * adapter->timer_ticks;		\
388	fmax = lat->_name.fabric.max * adapter->timer_ticks;		\
389	csum = lat->_name.channel.sum * adapter->timer_ticks;		\
390	cmin = lat->_name.channel.min * adapter->timer_ticks;		\
391	cmax = lat->_name.channel.max * adapter->timer_ticks;		\
392	cc  = lat->_name.counter;					\
393	spin_unlock_bh(&lat->lock);					\
394									\
395	do_div(fsum, 1000);						\
396	do_div(fmin, 1000);						\
397	do_div(fmax, 1000);						\
398	do_div(csum, 1000);						\
399	do_div(cmin, 1000);						\
400	do_div(cmax, 1000);						\
401									\
402	return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n",	\
403		       fmin, fmax, fsum, cmin, cmax, csum, cc); 	\
404}									\
405static ssize_t								\
406zfcp_sysfs_unit_##_name##_latency_store(struct device *dev,		\
407					struct device_attribute *attr,	\
408					const char *buf, size_t count)	\
409{									\
410	struct scsi_device *sdev = to_scsi_device(dev);			\
411	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);		\
412	struct zfcp_latencies *lat = &zfcp_sdev->latencies;		\
413	unsigned long flags;						\
414									\
415	spin_lock_irqsave(&lat->lock, flags);				\
416	lat->_name.fabric.sum = 0;					\
417	lat->_name.fabric.min = 0xFFFFFFFF;				\
418	lat->_name.fabric.max = 0;					\
419	lat->_name.channel.sum = 0;					\
420	lat->_name.channel.min = 0xFFFFFFFF;				\
421	lat->_name.channel.max = 0;					\
422	lat->_name.counter = 0;						\
423	spin_unlock_irqrestore(&lat->lock, flags);			\
424									\
425	return (ssize_t) count;						\
426}									\
427static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO,			\
428		   zfcp_sysfs_unit_##_name##_latency_show,		\
429		   zfcp_sysfs_unit_##_name##_latency_store);
430
431ZFCP_DEFINE_LATENCY_ATTR(read);
432ZFCP_DEFINE_LATENCY_ATTR(write);
433ZFCP_DEFINE_LATENCY_ATTR(cmd);
434
435#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value)			\
436static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev,	\
437					      struct device_attribute *attr,\
438					      char *buf)                 \
439{                                                                        \
440	struct scsi_device *sdev = to_scsi_device(dev);			 \
441	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);		 \
442	struct zfcp_port *port = zfcp_sdev->port;			 \
443									 \
444	return sprintf(buf, _format, _value);                            \
445}                                                                        \
446static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
447
448ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
449		      dev_name(&port->adapter->ccw_device->dev));
450ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
451		      (unsigned long long) port->wwpn);
452
453static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
454					    struct device_attribute *attr,
455					    char *buf)
456{
457	struct scsi_device *sdev = to_scsi_device(dev);
458
459	return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
460}
461static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
462
463struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
464	&dev_attr_fcp_lun,
465	&dev_attr_wwpn,
466	&dev_attr_hba_id,
467	&dev_attr_read_latency,
468	&dev_attr_write_latency,
469	&dev_attr_cmd_latency,
470	NULL
471};
472
473static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
474					    struct device_attribute *attr,
475					    char *buf)
476{
477	struct Scsi_Host *scsi_host = dev_to_shost(dev);
478	struct fsf_qtcb_bottom_port *qtcb_port;
479	struct zfcp_adapter *adapter;
480	int retval;
481
482	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
483	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
484		return -EOPNOTSUPP;
485
486	qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
487	if (!qtcb_port)
488		return -ENOMEM;
489
490	retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
491	if (!retval)
492		retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
493				 qtcb_port->cb_util, qtcb_port->a_util);
494	kfree(qtcb_port);
495	return retval;
496}
497static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
498
499static int zfcp_sysfs_adapter_ex_config(struct device *dev,
500					struct fsf_statistics_info *stat_inf)
501{
502	struct Scsi_Host *scsi_host = dev_to_shost(dev);
503	struct fsf_qtcb_bottom_config *qtcb_config;
504	struct zfcp_adapter *adapter;
505	int retval;
506
507	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
508	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
509		return -EOPNOTSUPP;
510
511	qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
512			      GFP_KERNEL);
513	if (!qtcb_config)
514		return -ENOMEM;
515
516	retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
517	if (!retval)
518		*stat_inf = qtcb_config->stat_info;
519
520	kfree(qtcb_config);
521	return retval;
522}
523
524#define ZFCP_SHOST_ATTR(_name, _format, _arg...)			\
525static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,	\
526						 struct device_attribute *attr,\
527						 char *buf)		\
528{									\
529	struct fsf_statistics_info stat_info;				\
530	int retval;							\
531									\
532	retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info);		\
533	if (retval)							\
534		return retval;						\
535									\
536	return sprintf(buf, _format, ## _arg);				\
537}									\
538static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
539
540ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
541		(unsigned long long) stat_info.input_req,
542		(unsigned long long) stat_info.output_req,
543		(unsigned long long) stat_info.control_req);
544
545ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
546		(unsigned long long) stat_info.input_mb,
547		(unsigned long long) stat_info.output_mb);
548
549ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
550		(unsigned long long) stat_info.seconds_act);
551
552static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
553					      struct device_attribute *attr,
554					      char *buf)
555{
556	struct Scsi_Host *scsi_host = class_to_shost(dev);
557	struct zfcp_qdio *qdio =
558		((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
559	u64 util;
560
561	spin_lock_bh(&qdio->stat_lock);
562	util = qdio->req_q_util;
563	spin_unlock_bh(&qdio->stat_lock);
564
565	return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
566		       (unsigned long long)util);
567}
568static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
569
570struct device_attribute *zfcp_sysfs_shost_attrs[] = {
571	&dev_attr_utilization,
572	&dev_attr_requests,
573	&dev_attr_megabytes,
574	&dev_attr_seconds_active,
575	&dev_attr_queue_full,
576	NULL
577};
578