1	/*
2	* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3	* Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
4	* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
5	*
6	* This software is available to you under a choice of one of two
7	* licenses. You may choose to be licensed under the terms of the GNU
8	* General Public License (GPL) Version 2, available from the file
9	* COPYING in the main directory of this source tree, or the
10	* OpenIB.org BSD license below:
11	*
12	* Redistribution and use in source and binary forms, with or
13	* without modification, are permitted provided that the following
14	* conditions are met:
15	*
16	* - Redistributions of source code must retain the above
17	* copyright notice, this list of conditions and the following
18	* disclaimer.
19	*
20	* - Redistributions in binary form must reproduce the above
21	* copyright notice, this list of conditions and the following
22	* disclaimer in the documentation and/or other materials
23	* provided with the distribution.
24	*
25	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32	* SOFTWARE.
33	*/
34
35	#include "core_priv.h"
36
37	#include <linux/slab.h>
38	#include <linux/stat.h>
39	#include <linux/string.h>
40	#include <linux/netdevice.h>
41	#include <linux/ethtool.h>
42
43	#include <rdma/ib_mad.h>
44	#include <rdma/ib_pma.h>
45	#include <rdma/ib_cache.h>
46	#include <rdma/rdma_counter.h>
47	#include <rdma/ib_sysfs.h>
48
49	struct port_table_attribute {
50	struct ib_port_attribute attr;
51	char name[8];
52	int index;
53	__be16 attr_id;
54	};
55
56	struct gid_attr_group {
57	struct ib_port *port;
58	struct kobject kobj;
59	struct attribute_group groups[2];
60	const struct attribute_group *groups_list[3];
61	struct port_table_attribute attrs_list[];
62	};
63
64	struct ib_port {
65	struct kobject kobj;
66	struct ib_device *ibdev;
67	struct gid_attr_group *gid_attr_group;
68	struct hw_stats_port_data *hw_stats_data;
69
70	struct attribute_group groups[3];
71	const struct attribute_group *groups_list[5];
72	u32 port_num;
73	struct port_table_attribute attrs_list[];
74	};
75
76	struct hw_stats_device_attribute {
77	struct device_attribute attr;
78	ssize_t (*show)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
79	unsigned int index, unsigned int port_num, char *buf);
80	ssize_t (*store)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
81	unsigned int index, unsigned int port_num,
82	const char *buf, size_t count);
83	};
84
85	struct hw_stats_port_attribute {
86	struct ib_port_attribute attr;
87	ssize_t (*show)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
88	unsigned int index, unsigned int port_num, char *buf);
89	ssize_t (*store)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
90	unsigned int index, unsigned int port_num,
91	const char *buf, size_t count);
92	};
93
94	struct hw_stats_device_data {
95	struct attribute_group group;
96	struct rdma_hw_stats *stats;
97	struct hw_stats_device_attribute attrs[];
98	};
99
100	struct hw_stats_port_data {
101	struct rdma_hw_stats *stats;
102	struct hw_stats_port_attribute attrs[];
103	};
104
105	static ssize_t port_attr_show(struct kobject *kobj,
106	struct attribute *attr, char *buf)
107	{
108	struct ib_port_attribute *port_attr =
109	container_of(attr, struct ib_port_attribute, attr);
110	struct ib_port *p = container_of(kobj, struct ib_port, kobj);
111
112	if (!port_attr->show)
113	return -EIO;
114
115	return port_attr->show(p->ibdev, p->port_num, port_attr, buf);
116	}
117
118	static ssize_t port_attr_store(struct kobject *kobj,
119	struct attribute *attr,
120	const char *buf, size_t count)
121	{
122	struct ib_port_attribute *port_attr =
123	container_of(attr, struct ib_port_attribute, attr);
124	struct ib_port *p = container_of(kobj, struct ib_port, kobj);
125
126	if (!port_attr->store)
127	return -EIO;
128	return port_attr->store(p->ibdev, p->port_num, port_attr, buf, count);
129	}
130
131	struct ib_device *ib_port_sysfs_get_ibdev_kobj(struct kobject *kobj,
132	u32 *port_num)
133	{
134	struct ib_port *port = container_of(kobj, struct ib_port, kobj);
135
136	*port_num = port->port_num;
137	return port->ibdev;
138	}
139	EXPORT_SYMBOL(ib_port_sysfs_get_ibdev_kobj);
140
141	static const struct sysfs_ops port_sysfs_ops = {
142	.show = port_attr_show,
143	.store = port_attr_store
144	};
145
146	static ssize_t hw_stat_device_show(struct device *dev,
147	struct device_attribute *attr, char *buf)
148	{
149	struct hw_stats_device_attribute *stat_attr =
150	container_of(attr, struct hw_stats_device_attribute, attr);
151	struct ib_device *ibdev = container_of(dev, struct ib_device, dev);
152
153	return stat_attr->show(ibdev, ibdev->hw_stats_data->stats,
154	stat_attr - ibdev->hw_stats_data->attrs, 0, buf);
155	}
156
157	static ssize_t hw_stat_device_store(struct device *dev,
158	struct device_attribute *attr,
159	const char *buf, size_t count)
160	{
161	struct hw_stats_device_attribute *stat_attr =
162	container_of(attr, struct hw_stats_device_attribute, attr);
163	struct ib_device *ibdev = container_of(dev, struct ib_device, dev);
164
165	return stat_attr->store(ibdev, ibdev->hw_stats_data->stats,
166	stat_attr - ibdev->hw_stats_data->attrs, 0, buf,
167	count);
168	}
169
170	static ssize_t hw_stat_port_show(struct ib_device *ibdev, u32 port_num,
171	struct ib_port_attribute *attr, char *buf)
172	{
173	struct hw_stats_port_attribute *stat_attr =
174	container_of(attr, struct hw_stats_port_attribute, attr);
175	struct ib_port *port = ibdev->port_data[port_num].sysfs;
176
177	return stat_attr->show(ibdev, port->hw_stats_data->stats,
178	stat_attr - port->hw_stats_data->attrs,
179	port->port_num, buf);
180	}
181
182	static ssize_t hw_stat_port_store(struct ib_device *ibdev, u32 port_num,
183	struct ib_port_attribute *attr,
184	const char *buf, size_t count)
185	{
186	struct hw_stats_port_attribute *stat_attr =
187	container_of(attr, struct hw_stats_port_attribute, attr);
188	struct ib_port *port = ibdev->port_data[port_num].sysfs;
189
190	return stat_attr->store(ibdev, port->hw_stats_data->stats,
191	stat_attr - port->hw_stats_data->attrs,
192	port->port_num, buf, count);
193	}
194
195	static ssize_t gid_attr_show(struct kobject *kobj,
196	struct attribute *attr, char *buf)
197	{
198	struct ib_port_attribute *port_attr =
199	container_of(attr, struct ib_port_attribute, attr);
200	struct ib_port *p = container_of(kobj, struct gid_attr_group,
201	kobj)->port;
202
203	if (!port_attr->show)
204	return -EIO;
205
206	return port_attr->show(p->ibdev, p->port_num, port_attr, buf);
207	}
208
209	static const struct sysfs_ops gid_attr_sysfs_ops = {
210	.show = gid_attr_show
211	};
212
213	static ssize_t state_show(struct ib_device *ibdev, u32 port_num,
214	struct ib_port_attribute *unused, char *buf)
215	{
216	struct ib_port_attr attr;
217	ssize_t ret;
218
219	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
220	if (ret)
221	return ret;
222
223	return sysfs_emit(buf, fmt: "%d: %s\n", attr.state,
224	ib_port_state_to_str(state: attr.state));
225	}
226
227	static ssize_t lid_show(struct ib_device *ibdev, u32 port_num,
228	struct ib_port_attribute *unused, char *buf)
229	{
230	struct ib_port_attr attr;
231	ssize_t ret;
232
233	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
234	if (ret)
235	return ret;
236
237	return sysfs_emit(buf, fmt: "0x%x\n", attr.lid);
238	}
239
240	static ssize_t lid_mask_count_show(struct ib_device *ibdev, u32 port_num,
241	struct ib_port_attribute *unused, char *buf)
242	{
243	struct ib_port_attr attr;
244	ssize_t ret;
245
246	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
247	if (ret)
248	return ret;
249
250	return sysfs_emit(buf, fmt: "%u\n", attr.lmc);
251	}
252
253	static ssize_t sm_lid_show(struct ib_device *ibdev, u32 port_num,
254	struct ib_port_attribute *unused, char *buf)
255	{
256	struct ib_port_attr attr;
257	ssize_t ret;
258
259	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
260	if (ret)
261	return ret;
262
263	return sysfs_emit(buf, fmt: "0x%x\n", attr.sm_lid);
264	}
265
266	static ssize_t sm_sl_show(struct ib_device *ibdev, u32 port_num,
267	struct ib_port_attribute *unused, char *buf)
268	{
269	struct ib_port_attr attr;
270	ssize_t ret;
271
272	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
273	if (ret)
274	return ret;
275
276	return sysfs_emit(buf, fmt: "%u\n", attr.sm_sl);
277	}
278
279	static ssize_t cap_mask_show(struct ib_device *ibdev, u32 port_num,
280	struct ib_port_attribute *unused, char *buf)
281	{
282	struct ib_port_attr attr;
283	ssize_t ret;
284
285	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
286	if (ret)
287	return ret;
288
289	return sysfs_emit(buf, fmt: "0x%08x\n", attr.port_cap_flags);
290	}
291
292	static ssize_t rate_show(struct ib_device *ibdev, u32 port_num,
293	struct ib_port_attribute *unused, char *buf)
294	{
295	struct ib_port_attr attr;
296	char *speed = "";
297	int rate; /* in deci-Gb/sec */
298	ssize_t ret;
299
300	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
301	if (ret)
302	return ret;
303
304	switch (attr.active_speed) {
305	case IB_SPEED_DDR:
306	speed = " DDR";
307	rate = 50;
308	break;
309	case IB_SPEED_QDR:
310	speed = " QDR";
311	rate = 100;
312	break;
313	case IB_SPEED_FDR10:
314	speed = " FDR10";
315	rate = 100;
316	break;
317	case IB_SPEED_FDR:
318	speed = " FDR";
319	rate = 140;
320	break;
321	case IB_SPEED_EDR:
322	speed = " EDR";
323	rate = 250;
324	break;
325	case IB_SPEED_HDR:
326	speed = " HDR";
327	rate = 500;
328	break;
329	case IB_SPEED_NDR:
330	speed = " NDR";
331	rate = 1000;
332	break;
333	case IB_SPEED_XDR:
334	speed = " XDR";
335	rate = 2000;
336	break;
337	case IB_SPEED_SDR:
338	default: /* default to SDR for invalid rates */
339	speed = " SDR";
340	rate = 25;
341	break;
342	}
343
344	rate *= ib_width_enum_to_int(width: attr.active_width);
345	if (rate < 0)
346	return -EINVAL;
347
348	return sysfs_emit(buf, fmt: "%d%s Gb/sec (%dX%s)\n", rate / 10,
349	rate % 10 ? ".5" : "",
350	ib_width_enum_to_int(width: attr.active_width), speed);
351	}
352
353	static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
354	{
355	static const char *phys_state_str[] = {
356	"<unknown>",
357	"Sleep",
358	"Polling",
359	"Disabled",
360	"PortConfigurationTraining",
361	"LinkUp",
362	"LinkErrorRecovery",
363	"Phy Test",
364	};
365
366	if (phys_state < ARRAY_SIZE(phys_state_str))
367	return phys_state_str[phys_state];
368	return "<unknown>";
369	}
370
371	static ssize_t phys_state_show(struct ib_device *ibdev, u32 port_num,
372	struct ib_port_attribute *unused, char *buf)
373	{
374	struct ib_port_attr attr;
375
376	ssize_t ret;
377
378	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
379	if (ret)
380	return ret;
381
382	return sysfs_emit(buf, fmt: "%u: %s\n", attr.phys_state,
383	phys_state_to_str(phys_state: attr.phys_state));
384	}
385
386	static ssize_t link_layer_show(struct ib_device *ibdev, u32 port_num,
387	struct ib_port_attribute *unused, char *buf)
388	{
389	const char *output;
390
391	switch (rdma_port_get_link_layer(device: ibdev, port_num)) {
392	case IB_LINK_LAYER_INFINIBAND:
393	output = "InfiniBand";
394	break;
395	case IB_LINK_LAYER_ETHERNET:
396	output = "Ethernet";
397	break;
398	default:
399	output = "Unknown";
400	break;
401	}
402
403	return sysfs_emit(buf, fmt: "%s\n", output);
404	}
405
406	static IB_PORT_ATTR_RO(state);
407	static IB_PORT_ATTR_RO(lid);
408	static IB_PORT_ATTR_RO(lid_mask_count);
409	static IB_PORT_ATTR_RO(sm_lid);
410	static IB_PORT_ATTR_RO(sm_sl);
411	static IB_PORT_ATTR_RO(cap_mask);
412	static IB_PORT_ATTR_RO(rate);
413	static IB_PORT_ATTR_RO(phys_state);
414	static IB_PORT_ATTR_RO(link_layer);
415
416	static struct attribute *port_default_attrs[] = {
417	&ib_port_attr_state.attr,
418	&ib_port_attr_lid.attr,
419	&ib_port_attr_lid_mask_count.attr,
420	&ib_port_attr_sm_lid.attr,
421	&ib_port_attr_sm_sl.attr,
422	&ib_port_attr_cap_mask.attr,
423	&ib_port_attr_rate.attr,
424	&ib_port_attr_phys_state.attr,
425	&ib_port_attr_link_layer.attr,
426	NULL
427	};
428	ATTRIBUTE_GROUPS(port_default);
429
430	static ssize_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf)
431	{
432	struct net_device *ndev;
433	int ret = -EINVAL;
434
435	rcu_read_lock();
436	ndev = rcu_dereference(gid_attr->ndev);
437	if (ndev)
438	ret = sysfs_emit(buf, fmt: "%s\n", ndev->name);
439	rcu_read_unlock();
440	return ret;
441	}
442
443	static ssize_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
444	{
445	return sysfs_emit(buf, fmt: "%s\n",
446	ib_cache_gid_type_str(gid_type: gid_attr->gid_type));
447	}
448
449	static ssize_t _show_port_gid_attr(
450	struct ib_device *ibdev, u32 port_num, struct ib_port_attribute *attr,
451	char *buf,
452	ssize_t (*print)(const struct ib_gid_attr *gid_attr, char *buf))
453	{
454	struct port_table_attribute *tab_attr =
455	container_of(attr, struct port_table_attribute, attr);
456	const struct ib_gid_attr *gid_attr;
457	ssize_t ret;
458
459	gid_attr = rdma_get_gid_attr(device: ibdev, port_num, index: tab_attr->index);
460	if (IS_ERR(ptr: gid_attr))
461	/* -EINVAL is returned for user space compatibility reasons. */
462	return -EINVAL;
463
464	ret = print(gid_attr, buf);
465	rdma_put_gid_attr(attr: gid_attr);
466	return ret;
467	}
468
469	static ssize_t show_port_gid(struct ib_device *ibdev, u32 port_num,
470	struct ib_port_attribute *attr, char *buf)
471	{
472	struct port_table_attribute *tab_attr =
473	container_of(attr, struct port_table_attribute, attr);
474	const struct ib_gid_attr *gid_attr;
475	int len;
476
477	gid_attr = rdma_get_gid_attr(device: ibdev, port_num, index: tab_attr->index);
478	if (IS_ERR(ptr: gid_attr)) {
479	const union ib_gid zgid = {};
480
481	/* If reading GID fails, it is likely due to GID entry being
482	* empty (invalid) or reserved GID in the table. User space
483	* expects to read GID table entries as long as it given index
484	* is within GID table size. Administrative/debugging tool
485	* fails to query rest of the GID entries if it hits error
486	* while querying a GID of the given index. To avoid user
487	* space throwing such error on fail to read gid, return zero
488	* GID as before. This maintains backward compatibility.
489	*/
490	return sysfs_emit(buf, fmt: "%pI6\n", zgid.raw);
491	}
492
493	len = sysfs_emit(buf, fmt: "%pI6\n", gid_attr->gid.raw);
494	rdma_put_gid_attr(attr: gid_attr);
495	return len;
496	}
497
498	static ssize_t show_port_gid_attr_ndev(struct ib_device *ibdev, u32 port_num,
499	struct ib_port_attribute *attr,
500	char *buf)
501	{
502	return _show_port_gid_attr(ibdev, port_num, attr, buf, print: print_ndev);
503	}
504
505	static ssize_t show_port_gid_attr_gid_type(struct ib_device *ibdev,
506	u32 port_num,
507	struct ib_port_attribute *attr,
508	char *buf)
509	{
510	return _show_port_gid_attr(ibdev, port_num, attr, buf, print: print_gid_type);
511	}
512
513	static ssize_t show_port_pkey(struct ib_device *ibdev, u32 port_num,
514	struct ib_port_attribute *attr, char *buf)
515	{
516	struct port_table_attribute *tab_attr =
517	container_of(attr, struct port_table_attribute, attr);
518	u16 pkey;
519	int ret;
520
521	ret = ib_query_pkey(device: ibdev, port_num, index: tab_attr->index, pkey: &pkey);
522	if (ret)
523	return ret;
524
525	return sysfs_emit(buf, fmt: "0x%04x\n", pkey);
526	}
527
528	#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
529	struct port_table_attribute port_pma_attr_##_name = { \
530	.attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
531	.index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
532	.attr_id = IB_PMA_PORT_COUNTERS, \
533	}
534
535	#define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
536	struct port_table_attribute port_pma_attr_ext_##_name = { \
537	.attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
538	.index = (_offset) | ((_width) << 16), \
539	.attr_id = IB_PMA_PORT_COUNTERS_EXT, \
540	}
541
542	/*
543	* Get a Perfmgmt MAD block of data.
544	* Returns error code or the number of bytes retrieved.
545	*/
546	static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
547	void *data, int offset, size_t size)
548	{
549	struct ib_mad *in_mad;
550	struct ib_mad *out_mad;
551	size_t mad_size = sizeof(*out_mad);
552	u16 out_mad_pkey_index = 0;
553	ssize_t ret;
554
555	if (!dev->ops.process_mad)
556	return -ENOSYS;
557
558	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
559	out_mad = kzalloc(sizeof(*out_mad), GFP_KERNEL);
560	if (!in_mad || !out_mad) {
561	ret = -ENOMEM;
562	goto out;
563	}
564
565	in_mad->mad_hdr.base_version = 1;
566	in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
567	in_mad->mad_hdr.class_version = 1;
568	in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
569	in_mad->mad_hdr.attr_id = attr;
570
571	if (attr != IB_PMA_CLASS_PORT_INFO)
572	in_mad->data[41] = port_num; /* PortSelect field */
573
574	if ((dev->ops.process_mad(dev, IB_MAD_IGNORE_MKEY, port_num, NULL, NULL,
575	in_mad, out_mad, &mad_size,
576	&out_mad_pkey_index) &
577	(IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
578	(IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
579	ret = -EINVAL;
580	goto out;
581	}
582	memcpy(data, out_mad->data + offset, size);
583	ret = size;
584	out:
585	kfree(objp: in_mad);
586	kfree(objp: out_mad);
587	return ret;
588	}
589
590	static ssize_t show_pma_counter(struct ib_device *ibdev, u32 port_num,
591	struct ib_port_attribute *attr, char *buf)
592	{
593	struct port_table_attribute *tab_attr =
594	container_of(attr, struct port_table_attribute, attr);
595	int offset = tab_attr->index & 0xffff;
596	int width = (tab_attr->index >> 16) & 0xff;
597	int ret;
598	u8 data[8];
599	int len;
600
601	ret = get_perf_mad(dev: ibdev, port_num, attr: tab_attr->attr_id, data: &data,
602	offset: 40 + offset / 8, size: sizeof(data));
603	if (ret < 0)
604	return ret;
605
606	switch (width) {
607	case 4:
608	len = sysfs_emit(buf, fmt: "%d\n",
609	(*data >> (4 - (offset % 8))) & 0xf);
610	break;
611	case 8:
612	len = sysfs_emit(buf, fmt: "%u\n", *data);
613	break;
614	case 16:
615	len = sysfs_emit(buf, fmt: "%u\n", be16_to_cpup(p: (__be16 *)data));
616	break;
617	case 32:
618	len = sysfs_emit(buf, fmt: "%u\n", be32_to_cpup(p: (__be32 *)data));
619	break;
620	case 64:
621	len = sysfs_emit(buf, fmt: "%llu\n", be64_to_cpup(p: (__be64 *)data));
622	break;
623	default:
624	len = 0;
625	break;
626	}
627
628	return len;
629	}
630
631	static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
632	static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
633	static PORT_PMA_ATTR(link_downed , 2, 8, 56);
634	static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
635	static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
636	static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
637	static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
638	static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
639	static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
640	static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
641	static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
642	static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
643	static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
644	static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
645	static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
646	static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
647	static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
648
649	/*
650	* Counters added by extended set
651	*/
652	static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
653	static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
654	static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
655	static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
656	static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
657	static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
658	static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
659	static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
660
661	static struct attribute *pma_attrs[] = {
662	&port_pma_attr_symbol_error.attr.attr,
663	&port_pma_attr_link_error_recovery.attr.attr,
664	&port_pma_attr_link_downed.attr.attr,
665	&port_pma_attr_port_rcv_errors.attr.attr,
666	&port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
667	&port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
668	&port_pma_attr_port_xmit_discards.attr.attr,
669	&port_pma_attr_port_xmit_constraint_errors.attr.attr,
670	&port_pma_attr_port_rcv_constraint_errors.attr.attr,
671	&port_pma_attr_local_link_integrity_errors.attr.attr,
672	&port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
673	&port_pma_attr_VL15_dropped.attr.attr,
674	&port_pma_attr_port_xmit_data.attr.attr,
675	&port_pma_attr_port_rcv_data.attr.attr,
676	&port_pma_attr_port_xmit_packets.attr.attr,
677	&port_pma_attr_port_rcv_packets.attr.attr,
678	&port_pma_attr_port_xmit_wait.attr.attr,
679	NULL
680	};
681
682	static struct attribute *pma_attrs_ext[] = {
683	&port_pma_attr_symbol_error.attr.attr,
684	&port_pma_attr_link_error_recovery.attr.attr,
685	&port_pma_attr_link_downed.attr.attr,
686	&port_pma_attr_port_rcv_errors.attr.attr,
687	&port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
688	&port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
689	&port_pma_attr_port_xmit_discards.attr.attr,
690	&port_pma_attr_port_xmit_constraint_errors.attr.attr,
691	&port_pma_attr_port_rcv_constraint_errors.attr.attr,
692	&port_pma_attr_local_link_integrity_errors.attr.attr,
693	&port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
694	&port_pma_attr_VL15_dropped.attr.attr,
695	&port_pma_attr_ext_port_xmit_data.attr.attr,
696	&port_pma_attr_ext_port_rcv_data.attr.attr,
697	&port_pma_attr_ext_port_xmit_packets.attr.attr,
698	&port_pma_attr_port_xmit_wait.attr.attr,
699	&port_pma_attr_ext_port_rcv_packets.attr.attr,
700	&port_pma_attr_ext_unicast_rcv_packets.attr.attr,
701	&port_pma_attr_ext_unicast_xmit_packets.attr.attr,
702	&port_pma_attr_ext_multicast_rcv_packets.attr.attr,
703	&port_pma_attr_ext_multicast_xmit_packets.attr.attr,
704	NULL
705	};
706
707	static struct attribute *pma_attrs_noietf[] = {
708	&port_pma_attr_symbol_error.attr.attr,
709	&port_pma_attr_link_error_recovery.attr.attr,
710	&port_pma_attr_link_downed.attr.attr,
711	&port_pma_attr_port_rcv_errors.attr.attr,
712	&port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
713	&port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
714	&port_pma_attr_port_xmit_discards.attr.attr,
715	&port_pma_attr_port_xmit_constraint_errors.attr.attr,
716	&port_pma_attr_port_rcv_constraint_errors.attr.attr,
717	&port_pma_attr_local_link_integrity_errors.attr.attr,
718	&port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
719	&port_pma_attr_VL15_dropped.attr.attr,
720	&port_pma_attr_ext_port_xmit_data.attr.attr,
721	&port_pma_attr_ext_port_rcv_data.attr.attr,
722	&port_pma_attr_ext_port_xmit_packets.attr.attr,
723	&port_pma_attr_ext_port_rcv_packets.attr.attr,
724	&port_pma_attr_port_xmit_wait.attr.attr,
725	NULL
726	};
727
728	static const struct attribute_group pma_group = {
729	.name = "counters",
730	.attrs = pma_attrs
731	};
732
733	static const struct attribute_group pma_group_ext = {
734	.name = "counters",
735	.attrs = pma_attrs_ext
736	};
737
738	static const struct attribute_group pma_group_noietf = {
739	.name = "counters",
740	.attrs = pma_attrs_noietf
741	};
742
743	static void ib_port_release(struct kobject *kobj)
744	{
745	struct ib_port *port = container_of(kobj, struct ib_port, kobj);
746	int i;
747
748	for (i = 0; i != ARRAY_SIZE(port->groups); i++)
749	kfree(objp: port->groups[i].attrs);
750	if (port->hw_stats_data)
751	rdma_free_hw_stats_struct(stats: port->hw_stats_data->stats);
752	kfree(objp: port->hw_stats_data);
753	kvfree(addr: port);
754	}
755
756	static void ib_port_gid_attr_release(struct kobject *kobj)
757	{
758	struct gid_attr_group *gid_attr_group =
759	container_of(kobj, struct gid_attr_group, kobj);
760	int i;
761
762	for (i = 0; i != ARRAY_SIZE(gid_attr_group->groups); i++)
763	kfree(objp: gid_attr_group->groups[i].attrs);
764	kfree(objp: gid_attr_group);
765	}
766
767	static struct kobj_type port_type = {
768	.release = ib_port_release,
769	.sysfs_ops = &port_sysfs_ops,
770	.default_groups = port_default_groups,
771	};
772
773	static struct kobj_type gid_attr_type = {
774	.sysfs_ops = &gid_attr_sysfs_ops,
775	.release = ib_port_gid_attr_release
776	};
777
778	/*
779	* Figure out which counter table to use depending on
780	* the device capabilities.
781	*/
782	static const struct attribute_group *get_counter_table(struct ib_device *dev,
783	int port_num)
784	{
785	struct ib_class_port_info cpi;
786
787	if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
788	data: &cpi, offset: 40, size: sizeof(cpi)) >= 0) {
789	if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
790	/* We have extended counters */
791	return &pma_group_ext;
792
793	if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
794	/* But not the IETF ones */
795	return &pma_group_noietf;
796	}
797
798	/* Fall back to normal counters */
799	return &pma_group;
800	}
801
802	static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
803	u32 port_num, int index)
804	{
805	int ret;
806
807	if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
808	return 0;
809	ret = dev->ops.get_hw_stats(dev, stats, port_num, index);
810	if (ret < 0)
811	return ret;
812	if (ret == stats->num_counters)
813	stats->timestamp = jiffies;
814
815	return 0;
816	}
817
818	static int print_hw_stat(struct ib_device *dev, int port_num,
819	struct rdma_hw_stats *stats, int index, char *buf)
820	{
821	u64 v = rdma_counter_get_hwstat_value(dev, port: port_num, index);
822
823	return sysfs_emit(buf, fmt: "%llu\n", stats->value[index] + v);
824	}
825
826	static ssize_t show_hw_stats(struct ib_device *ibdev,
827	struct rdma_hw_stats *stats, unsigned int index,
828	unsigned int port_num, char *buf)
829	{
830	int ret;
831
832	mutex_lock(&stats->lock);
833	ret = update_hw_stats(dev: ibdev, stats, port_num, index);
834	if (ret)
835	goto unlock;
836	ret = print_hw_stat(dev: ibdev, port_num, stats, index, buf);
837	unlock:
838	mutex_unlock(lock: &stats->lock);
839
840	return ret;
841	}
842
843	static ssize_t show_stats_lifespan(struct ib_device *ibdev,
844	struct rdma_hw_stats *stats,
845	unsigned int index, unsigned int port_num,
846	char *buf)
847	{
848	int msecs;
849
850	mutex_lock(&stats->lock);
851	msecs = jiffies_to_msecs(j: stats->lifespan);
852	mutex_unlock(lock: &stats->lock);
853
854	return sysfs_emit(buf, fmt: "%d\n", msecs);
855	}
856
857	static ssize_t set_stats_lifespan(struct ib_device *ibdev,
858	struct rdma_hw_stats *stats,
859	unsigned int index, unsigned int port_num,
860	const char *buf, size_t count)
861	{
862	int msecs;
863	int jiffies;
864	int ret;
865
866	ret = kstrtoint(s: buf, base: 10, res: &msecs);
867	if (ret)
868	return ret;
869	if (msecs < 0 || msecs > 10000)
870	return -EINVAL;
871	jiffies = msecs_to_jiffies(m: msecs);
872
873	mutex_lock(&stats->lock);
874	stats->lifespan = jiffies;
875	mutex_unlock(lock: &stats->lock);
876
877	return count;
878	}
879
880	static struct hw_stats_device_data *
881	alloc_hw_stats_device(struct ib_device *ibdev)
882	{
883	struct hw_stats_device_data *data;
884	struct rdma_hw_stats *stats;
885
886	if (!ibdev->ops.alloc_hw_device_stats)
887	return ERR_PTR(error: -EOPNOTSUPP);
888	stats = ibdev->ops.alloc_hw_device_stats(ibdev);
889	if (!stats)
890	return ERR_PTR(error: -ENOMEM);
891	if (!stats->descs || stats->num_counters <= 0)
892	goto err_free_stats;
893
894	/*
895	* Two extra attribue elements here, one for the lifespan entry and
896	* one to NULL terminate the list for the sysfs core code
897	*/
898	data = kzalloc(struct_size(data, attrs, size_add(stats->num_counters, 1)),
899	GFP_KERNEL);
900	if (!data)
901	goto err_free_stats;
902	data->group.attrs = kcalloc(stats->num_counters + 2,
903	sizeof(*data->group.attrs), GFP_KERNEL);
904	if (!data->group.attrs)
905	goto err_free_data;
906
907	data->group.name = "hw_counters";
908	data->stats = stats;
909	return data;
910
911	err_free_data:
912	kfree(objp: data);
913	err_free_stats:
914	rdma_free_hw_stats_struct(stats);
915	return ERR_PTR(error: -ENOMEM);
916	}
917
918	void ib_device_release_hw_stats(struct hw_stats_device_data *data)
919	{
920	kfree(objp: data->group.attrs);
921	rdma_free_hw_stats_struct(stats: data->stats);
922	kfree(objp: data);
923	}
924
925	int ib_setup_device_attrs(struct ib_device *ibdev)
926	{
927	struct hw_stats_device_attribute *attr;
928	struct hw_stats_device_data *data;
929	bool opstat_skipped = false;
930	int i, ret, pos = 0;
931
932	data = alloc_hw_stats_device(ibdev);
933	if (IS_ERR(ptr: data)) {
934	if (PTR_ERR(ptr: data) == -EOPNOTSUPP)
935	return 0;
936	return PTR_ERR(ptr: data);
937	}
938	ibdev->hw_stats_data = data;
939
940	ret = ibdev->ops.get_hw_stats(ibdev, data->stats, 0,
941	data->stats->num_counters);
942	if (ret != data->stats->num_counters) {
943	if (WARN_ON(ret >= 0))
944	return -EINVAL;
945	return ret;
946	}
947
948	data->stats->timestamp = jiffies;
949
950	for (i = 0; i < data->stats->num_counters; i++) {
951	if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) {
952	opstat_skipped = true;
953	continue;
954	}
955
956	WARN_ON(opstat_skipped);
957	attr = &data->attrs[pos];
958	sysfs_attr_init(&attr->attr.attr);
959	attr->attr.attr.name = data->stats->descs[i].name;
960	attr->attr.attr.mode = 0444;
961	attr->attr.show = hw_stat_device_show;
962	attr->show = show_hw_stats;
963	data->group.attrs[pos] = &attr->attr.attr;
964	pos++;
965	}
966
967	attr = &data->attrs[pos];
968	sysfs_attr_init(&attr->attr.attr);
969	attr->attr.attr.name = "lifespan";
970	attr->attr.attr.mode = 0644;
971	attr->attr.show = hw_stat_device_show;
972	attr->show = show_stats_lifespan;
973	attr->attr.store = hw_stat_device_store;
974	attr->store = set_stats_lifespan;
975	data->group.attrs[pos] = &attr->attr.attr;
976	for (i = 0; i != ARRAY_SIZE(ibdev->groups); i++)
977	if (!ibdev->groups[i]) {
978	ibdev->groups[i] = &data->group;
979	ibdev->hw_stats_attr_index = i;
980	return 0;
981	}
982	WARN(true, "struct ib_device->groups is too small");
983	return -EINVAL;
984	}
985
986	static struct hw_stats_port_data *
987	alloc_hw_stats_port(struct ib_port *port, struct attribute_group *group)
988	{
989	struct ib_device *ibdev = port->ibdev;
990	struct hw_stats_port_data *data;
991	struct rdma_hw_stats *stats;
992
993	if (!ibdev->ops.alloc_hw_port_stats)
994	return ERR_PTR(error: -EOPNOTSUPP);
995	stats = ibdev->ops.alloc_hw_port_stats(port->ibdev, port->port_num);
996	if (!stats)
997	return ERR_PTR(error: -ENOMEM);
998	if (!stats->descs || stats->num_counters <= 0)
999	goto err_free_stats;
1000
1001	/*
1002	* Two extra attribue elements here, one for the lifespan entry and
1003	* one to NULL terminate the list for the sysfs core code
1004	*/
1005	data = kzalloc(struct_size(data, attrs, size_add(stats->num_counters, 1)),
1006	GFP_KERNEL);
1007	if (!data)
1008	goto err_free_stats;
1009	group->attrs = kcalloc(stats->num_counters + 2,
1010	sizeof(*group->attrs), GFP_KERNEL);
1011	if (!group->attrs)
1012	goto err_free_data;
1013
1014	group->name = "hw_counters";
1015	data->stats = stats;
1016	return data;
1017
1018	err_free_data:
1019	kfree(objp: data);
1020	err_free_stats:
1021	rdma_free_hw_stats_struct(stats);
1022	return ERR_PTR(error: -ENOMEM);
1023	}
1024
1025	static int setup_hw_port_stats(struct ib_port *port,
1026	struct attribute_group *group)
1027	{
1028	struct hw_stats_port_attribute *attr;
1029	struct hw_stats_port_data *data;
1030	bool opstat_skipped = false;
1031	int i, ret, pos = 0;
1032
1033	data = alloc_hw_stats_port(port, group);
1034	if (IS_ERR(ptr: data))
1035	return PTR_ERR(ptr: data);
1036
1037	ret = port->ibdev->ops.get_hw_stats(port->ibdev, data->stats,
1038	port->port_num,
1039	data->stats->num_counters);
1040	if (ret != data->stats->num_counters) {
1041	if (WARN_ON(ret >= 0))
1042	return -EINVAL;
1043	return ret;
1044	}
1045
1046	data->stats->timestamp = jiffies;
1047
1048	for (i = 0; i < data->stats->num_counters; i++) {
1049	if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) {
1050	opstat_skipped = true;
1051	continue;
1052	}
1053
1054	WARN_ON(opstat_skipped);
1055	attr = &data->attrs[pos];
1056	sysfs_attr_init(&attr->attr.attr);
1057	attr->attr.attr.name = data->stats->descs[i].name;
1058	attr->attr.attr.mode = 0444;
1059	attr->attr.show = hw_stat_port_show;
1060	attr->show = show_hw_stats;
1061	group->attrs[pos] = &attr->attr.attr;
1062	pos++;
1063	}
1064
1065	attr = &data->attrs[pos];
1066	sysfs_attr_init(&attr->attr.attr);
1067	attr->attr.attr.name = "lifespan";
1068	attr->attr.attr.mode = 0644;
1069	attr->attr.show = hw_stat_port_show;
1070	attr->show = show_stats_lifespan;
1071	attr->attr.store = hw_stat_port_store;
1072	attr->store = set_stats_lifespan;
1073	group->attrs[pos] = &attr->attr.attr;
1074
1075	port->hw_stats_data = data;
1076	return 0;
1077	}
1078
1079	struct rdma_hw_stats *ib_get_hw_stats_port(struct ib_device *ibdev,
1080	u32 port_num)
1081	{
1082	if (!ibdev->port_data || !rdma_is_port_valid(device: ibdev, port: port_num) ||
1083	!ibdev->port_data[port_num].sysfs->hw_stats_data)
1084	return NULL;
1085	return ibdev->port_data[port_num].sysfs->hw_stats_data->stats;
1086	}
1087
1088	static int
1089	alloc_port_table_group(const char *name, struct attribute_group *group,
1090	struct port_table_attribute *attrs, size_t num,
1091	ssize_t (*show)(struct ib_device *ibdev, u32 port_num,
1092	struct ib_port_attribute *, char *buf))
1093	{
1094	struct attribute **attr_list;
1095	int i;
1096
1097	attr_list = kcalloc(num + 1, sizeof(*attr_list), GFP_KERNEL);
1098	if (!attr_list)
1099	return -ENOMEM;
1100
1101	for (i = 0; i < num; i++) {
1102	struct port_table_attribute *element = &attrs[i];
1103
1104	if (snprintf(buf: element->name, size: sizeof(element->name), fmt: "%d", i) >=
1105	sizeof(element->name))
1106	goto err;
1107
1108	sysfs_attr_init(&element->attr.attr);
1109	element->attr.attr.name = element->name;
1110	element->attr.attr.mode = 0444;
1111	element->attr.show = show;
1112	element->index = i;
1113
1114	attr_list[i] = &element->attr.attr;
1115	}
1116	group->name = name;
1117	group->attrs = attr_list;
1118	return 0;
1119	err:
1120	kfree(objp: attr_list);
1121	return -EINVAL;
1122	}
1123
1124	/*
1125	* Create the sysfs:
1126	* ibp0s9/ports/XX/gid_attrs/{ndevs,types}/YYY
1127	* YYY is the gid table index in decimal
1128	*/
1129	static int setup_gid_attrs(struct ib_port *port,
1130	const struct ib_port_attr *attr)
1131	{
1132	struct gid_attr_group *gid_attr_group;
1133	int ret;
1134
1135	gid_attr_group = kzalloc(struct_size(gid_attr_group, attrs_list,
1136	size_mul(attr->gid_tbl_len, 2)),
1137	GFP_KERNEL);
1138	if (!gid_attr_group)
1139	return -ENOMEM;
1140	gid_attr_group->port = port;
1141	kobject_init(kobj: &gid_attr_group->kobj, ktype: &gid_attr_type);
1142
1143	ret = alloc_port_table_group(name: "ndevs", group: &gid_attr_group->groups[0],
1144	attrs: gid_attr_group->attrs_list,
1145	num: attr->gid_tbl_len,
1146	show: show_port_gid_attr_ndev);
1147	if (ret)
1148	goto err_put;
1149	gid_attr_group->groups_list[0] = &gid_attr_group->groups[0];
1150
1151	ret = alloc_port_table_group(
1152	name: "types", group: &gid_attr_group->groups[1],
1153	attrs: gid_attr_group->attrs_list + attr->gid_tbl_len,
1154	num: attr->gid_tbl_len, show: show_port_gid_attr_gid_type);
1155	if (ret)
1156	goto err_put;
1157	gid_attr_group->groups_list[1] = &gid_attr_group->groups[1];
1158
1159	ret = kobject_add(kobj: &gid_attr_group->kobj, parent: &port->kobj, fmt: "gid_attrs");
1160	if (ret)
1161	goto err_put;
1162	ret = sysfs_create_groups(kobj: &gid_attr_group->kobj,
1163	groups: gid_attr_group->groups_list);
1164	if (ret)
1165	goto err_del;
1166	port->gid_attr_group = gid_attr_group;
1167	return 0;
1168
1169	err_del:
1170	kobject_del(kobj: &gid_attr_group->kobj);
1171	err_put:
1172	kobject_put(kobj: &gid_attr_group->kobj);
1173	return ret;
1174	}
1175
1176	static void destroy_gid_attrs(struct ib_port *port)
1177	{
1178	struct gid_attr_group *gid_attr_group = port->gid_attr_group;
1179
1180	if (!gid_attr_group)
1181	return;
1182	sysfs_remove_groups(kobj: &gid_attr_group->kobj, groups: gid_attr_group->groups_list);
1183	kobject_del(kobj: &gid_attr_group->kobj);
1184	kobject_put(kobj: &gid_attr_group->kobj);
1185	}
1186
1187	/*
1188	* Create the sysfs:
1189	* ibp0s9/ports/XX/{gids,pkeys,counters}/YYY
1190	*/
1191	static struct ib_port *setup_port(struct ib_core_device *coredev, int port_num,
1192	const struct ib_port_attr *attr)
1193	{
1194	struct ib_device *device = rdma_device_to_ibdev(device: &coredev->dev);
1195	bool is_full_dev = &device->coredev == coredev;
1196	const struct attribute_group **cur_group;
1197	struct ib_port *p;
1198	int ret;
1199
1200	p = kvzalloc(struct_size(p, attrs_list,
1201	size_add(attr->gid_tbl_len, attr->pkey_tbl_len)),
1202	GFP_KERNEL);
1203	if (!p)
1204	return ERR_PTR(error: -ENOMEM);
1205	p->ibdev = device;
1206	p->port_num = port_num;
1207	kobject_init(kobj: &p->kobj, ktype: &port_type);
1208
1209	if (device->port_data && is_full_dev)
1210	device->port_data[port_num].sysfs = p;
1211
1212	cur_group = p->groups_list;
1213	ret = alloc_port_table_group(name: "gids", group: &p->groups[0], attrs: p->attrs_list,
1214	num: attr->gid_tbl_len, show: show_port_gid);
1215	if (ret)
1216	goto err_put;
1217	*cur_group++ = &p->groups[0];
1218
1219	if (attr->pkey_tbl_len) {
1220	ret = alloc_port_table_group(name: "pkeys", group: &p->groups[1],
1221	attrs: p->attrs_list + attr->gid_tbl_len,
1222	num: attr->pkey_tbl_len, show: show_port_pkey);
1223	if (ret)
1224	goto err_put;
1225	*cur_group++ = &p->groups[1];
1226	}
1227
1228	/*
1229	* If port == 0, it means hw_counters are per device and not per
1230	* port, so holder should be device. Therefore skip per port
1231	* counter initialization.
1232	*/
1233	if (port_num && is_full_dev) {
1234	ret = setup_hw_port_stats(port: p, group: &p->groups[2]);
1235	if (ret && ret != -EOPNOTSUPP)
1236	goto err_put;
1237	if (!ret)
1238	*cur_group++ = &p->groups[2];
1239	}
1240
1241	if (device->ops.process_mad && is_full_dev)
1242	*cur_group++ = get_counter_table(dev: device, port_num);
1243
1244	ret = kobject_add(kobj: &p->kobj, parent: coredev->ports_kobj, fmt: "%d", port_num);
1245	if (ret)
1246	goto err_put;
1247	ret = sysfs_create_groups(kobj: &p->kobj, groups: p->groups_list);
1248	if (ret)
1249	goto err_del;
1250	if (is_full_dev) {
1251	ret = sysfs_create_groups(kobj: &p->kobj, groups: device->ops.port_groups);
1252	if (ret)
1253	goto err_groups;
1254	}
1255
1256	list_add_tail(new: &p->kobj.entry, head: &coredev->port_list);
1257	return p;
1258
1259	err_groups:
1260	sysfs_remove_groups(kobj: &p->kobj, groups: p->groups_list);
1261	err_del:
1262	kobject_del(kobj: &p->kobj);
1263	err_put:
1264	if (device->port_data && is_full_dev)
1265	device->port_data[port_num].sysfs = NULL;
1266	kobject_put(kobj: &p->kobj);
1267	return ERR_PTR(error: ret);
1268	}
1269
1270	static void destroy_port(struct ib_core_device *coredev, struct ib_port *port)
1271	{
1272	bool is_full_dev = &port->ibdev->coredev == coredev;
1273
1274	list_del(entry: &port->kobj.entry);
1275	if (is_full_dev)
1276	sysfs_remove_groups(kobj: &port->kobj, groups: port->ibdev->ops.port_groups);
1277
1278	sysfs_remove_groups(kobj: &port->kobj, groups: port->groups_list);
1279	kobject_del(kobj: &port->kobj);
1280
1281	if (port->ibdev->port_data &&
1282	port->ibdev->port_data[port->port_num].sysfs == port)
1283	port->ibdev->port_data[port->port_num].sysfs = NULL;
1284
1285	kobject_put(kobj: &port->kobj);
1286	}
1287
1288	static const char *node_type_string(int node_type)
1289	{
1290	switch (node_type) {
1291	case RDMA_NODE_IB_CA:
1292	return "CA";
1293	case RDMA_NODE_IB_SWITCH:
1294	return "switch";
1295	case RDMA_NODE_IB_ROUTER:
1296	return "router";
1297	case RDMA_NODE_RNIC:
1298	return "RNIC";
1299	case RDMA_NODE_USNIC:
1300	return "usNIC";
1301	case RDMA_NODE_USNIC_UDP:
1302	return "usNIC UDP";
1303	case RDMA_NODE_UNSPECIFIED:
1304	return "unspecified";
1305	}
1306	return "<unknown>";
1307	}
1308
1309	static ssize_t node_type_show(struct device *device,
1310	struct device_attribute *attr, char *buf)
1311	{
1312	struct ib_device *dev = rdma_device_to_ibdev(device);
1313
1314	return sysfs_emit(buf, fmt: "%u: %s\n", dev->node_type,
1315	node_type_string(node_type: dev->node_type));
1316	}
1317	static DEVICE_ATTR_RO(node_type);
1318
1319	static ssize_t sys_image_guid_show(struct device *device,
1320	struct device_attribute *dev_attr, char *buf)
1321	{
1322	struct ib_device *dev = rdma_device_to_ibdev(device);
1323	__be16 *guid = (__be16 *)&dev->attrs.sys_image_guid;
1324
1325	return sysfs_emit(buf, fmt: "%04x:%04x:%04x:%04x\n",
1326	be16_to_cpu(guid[0]),
1327	be16_to_cpu(guid[1]),
1328	be16_to_cpu(guid[2]),
1329	be16_to_cpu(guid[3]));
1330	}
1331	static DEVICE_ATTR_RO(sys_image_guid);
1332
1333	static ssize_t node_guid_show(struct device *device,
1334	struct device_attribute *attr, char *buf)
1335	{
1336	struct ib_device *dev = rdma_device_to_ibdev(device);
1337	__be16 *node_guid = (__be16 *)&dev->node_guid;
1338
1339	return sysfs_emit(buf, fmt: "%04x:%04x:%04x:%04x\n",
1340	be16_to_cpu(node_guid[0]),
1341	be16_to_cpu(node_guid[1]),
1342	be16_to_cpu(node_guid[2]),
1343	be16_to_cpu(node_guid[3]));
1344	}
1345	static DEVICE_ATTR_RO(node_guid);
1346
1347	static ssize_t node_desc_show(struct device *device,
1348	struct device_attribute *attr, char *buf)
1349	{
1350	struct ib_device *dev = rdma_device_to_ibdev(device);
1351
1352	return sysfs_emit(buf, fmt: "%.64s\n", dev->node_desc);
1353	}
1354
1355	static ssize_t node_desc_store(struct device *device,
1356	struct device_attribute *attr,
1357	const char *buf, size_t count)
1358	{
1359	struct ib_device *dev = rdma_device_to_ibdev(device);
1360	struct ib_device_modify desc = {};
1361	int ret;
1362
1363	if (!dev->ops.modify_device)
1364	return -EOPNOTSUPP;
1365
1366	memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1367	ret = ib_modify_device(device: dev, device_modify_mask: IB_DEVICE_MODIFY_NODE_DESC, device_modify: &desc);
1368	if (ret)
1369	return ret;
1370
1371	return count;
1372	}
1373	static DEVICE_ATTR_RW(node_desc);
1374
1375	static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr,
1376	char *buf)
1377	{
1378	struct ib_device *dev = rdma_device_to_ibdev(device);
1379	char version[IB_FW_VERSION_NAME_MAX] = {};
1380
1381	ib_get_device_fw_str(device: dev, str: version);
1382
1383	return sysfs_emit(buf, fmt: "%s\n", version);
1384	}
1385	static DEVICE_ATTR_RO(fw_ver);
1386
1387	static struct attribute *ib_dev_attrs[] = {
1388	&dev_attr_node_type.attr,
1389	&dev_attr_node_guid.attr,
1390	&dev_attr_sys_image_guid.attr,
1391	&dev_attr_fw_ver.attr,
1392	&dev_attr_node_desc.attr,
1393	NULL,
1394	};
1395
1396	const struct attribute_group ib_dev_attr_group = {
1397	.attrs = ib_dev_attrs,
1398	};
1399
1400	void ib_free_port_attrs(struct ib_core_device *coredev)
1401	{
1402	struct kobject *p, *t;
1403
1404	list_for_each_entry_safe(p, t, &coredev->port_list, entry) {
1405	struct ib_port *port = container_of(p, struct ib_port, kobj);
1406
1407	destroy_gid_attrs(port);
1408	destroy_port(coredev, port);
1409	}
1410
1411	kobject_put(kobj: coredev->ports_kobj);
1412	}
1413
1414	int ib_setup_port_attrs(struct ib_core_device *coredev)
1415	{
1416	struct ib_device *device = rdma_device_to_ibdev(device: &coredev->dev);
1417	u32 port_num;
1418	int ret;
1419
1420	coredev->ports_kobj = kobject_create_and_add(name: "ports",
1421	parent: &coredev->dev.kobj);
1422	if (!coredev->ports_kobj)
1423	return -ENOMEM;
1424
1425	rdma_for_each_port (device, port_num) {
1426	struct ib_port_attr attr;
1427	struct ib_port *port;
1428
1429	ret = ib_query_port(device, port_num, port_attr: &attr);
1430	if (ret)
1431	goto err_put;
1432
1433	port = setup_port(coredev, port_num, attr: &attr);
1434	if (IS_ERR(ptr: port)) {
1435	ret = PTR_ERR(ptr: port);
1436	goto err_put;
1437	}
1438
1439	ret = setup_gid_attrs(port, attr: &attr);
1440	if (ret)
1441	goto err_put;
1442	}
1443	return 0;
1444
1445	err_put:
1446	ib_free_port_attrs(coredev);
1447	return ret;
1448	}
1449
1450	/**
1451	* ib_port_register_client_groups - Add an ib_client's attributes to the port
1452	*
1453	* @ibdev: IB device to add counters
1454	* @port_num: valid port number
1455	* @groups: Group list of attributes
1456	*
1457	* Do not use. Only for legacy sysfs compatibility.
1458	*/
1459	int ib_port_register_client_groups(struct ib_device *ibdev, u32 port_num,
1460	const struct attribute_group **groups)
1461	{
1462	return sysfs_create_groups(kobj: &ibdev->port_data[port_num].sysfs->kobj,
1463	groups);
1464	}
1465	EXPORT_SYMBOL(ib_port_register_client_groups);
1466
1467	void ib_port_unregister_client_groups(struct ib_device *ibdev, u32 port_num,
1468	const struct attribute_group **groups)
1469	{
1470	return sysfs_remove_groups(kobj: &ibdev->port_data[port_num].sysfs->kobj,
1471	groups);
1472	}
1473	EXPORT_SYMBOL(ib_port_unregister_client_groups);
1474