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	static const char *state_name[] = {
220	[IB_PORT_NOP] = "NOP",
221	[IB_PORT_DOWN] = "DOWN",
222	[IB_PORT_INIT] = "INIT",
223	[IB_PORT_ARMED] = "ARMED",
224	[IB_PORT_ACTIVE] = "ACTIVE",
225	[IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
226	};
227
228	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
229	if (ret)
230	return ret;
231
232	return sysfs_emit(buf, fmt: "%d: %s\n", attr.state,
233	attr.state >= 0 &&
234	attr.state < ARRAY_SIZE(state_name) ?
235	state_name[attr.state] :
236	"UNKNOWN");
237	}
238
239	static ssize_t lid_show(struct ib_device *ibdev, u32 port_num,
240	struct ib_port_attribute *unused, char *buf)
241	{
242	struct ib_port_attr attr;
243	ssize_t ret;
244
245	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
246	if (ret)
247	return ret;
248
249	return sysfs_emit(buf, fmt: "0x%x\n", attr.lid);
250	}
251
252	static ssize_t lid_mask_count_show(struct ib_device *ibdev, u32 port_num,
253	struct ib_port_attribute *unused, char *buf)
254	{
255	struct ib_port_attr attr;
256	ssize_t ret;
257
258	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
259	if (ret)
260	return ret;
261
262	return sysfs_emit(buf, fmt: "%u\n", attr.lmc);
263	}
264
265	static ssize_t sm_lid_show(struct ib_device *ibdev, u32 port_num,
266	struct ib_port_attribute *unused, char *buf)
267	{
268	struct ib_port_attr attr;
269	ssize_t ret;
270
271	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
272	if (ret)
273	return ret;
274
275	return sysfs_emit(buf, fmt: "0x%x\n", attr.sm_lid);
276	}
277
278	static ssize_t sm_sl_show(struct ib_device *ibdev, u32 port_num,
279	struct ib_port_attribute *unused, char *buf)
280	{
281	struct ib_port_attr attr;
282	ssize_t ret;
283
284	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
285	if (ret)
286	return ret;
287
288	return sysfs_emit(buf, fmt: "%u\n", attr.sm_sl);
289	}
290
291	static ssize_t cap_mask_show(struct ib_device *ibdev, u32 port_num,
292	struct ib_port_attribute *unused, char *buf)
293	{
294	struct ib_port_attr attr;
295	ssize_t ret;
296
297	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
298	if (ret)
299	return ret;
300
301	return sysfs_emit(buf, fmt: "0x%08x\n", attr.port_cap_flags);
302	}
303
304	static ssize_t rate_show(struct ib_device *ibdev, u32 port_num,
305	struct ib_port_attribute *unused, char *buf)
306	{
307	struct ib_port_attr attr;
308	char *speed = "";
309	int rate; /* in deci-Gb/sec */
310	ssize_t ret;
311
312	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
313	if (ret)
314	return ret;
315
316	switch (attr.active_speed) {
317	case IB_SPEED_DDR:
318	speed = " DDR";
319	rate = 50;
320	break;
321	case IB_SPEED_QDR:
322	speed = " QDR";
323	rate = 100;
324	break;
325	case IB_SPEED_FDR10:
326	speed = " FDR10";
327	rate = 100;
328	break;
329	case IB_SPEED_FDR:
330	speed = " FDR";
331	rate = 140;
332	break;
333	case IB_SPEED_EDR:
334	speed = " EDR";
335	rate = 250;
336	break;
337	case IB_SPEED_HDR:
338	speed = " HDR";
339	rate = 500;
340	break;
341	case IB_SPEED_NDR:
342	speed = " NDR";
343	rate = 1000;
344	break;
345	case IB_SPEED_XDR:
346	speed = " XDR";
347	rate = 2000;
348	break;
349	case IB_SPEED_SDR:
350	default: /* default to SDR for invalid rates */
351	speed = " SDR";
352	rate = 25;
353	break;
354	}
355
356	rate *= ib_width_enum_to_int(width: attr.active_width);
357	if (rate < 0)
358	return -EINVAL;
359
360	return sysfs_emit(buf, fmt: "%d%s Gb/sec (%dX%s)\n", rate / 10,
361	rate % 10 ? ".5" : "",
362	ib_width_enum_to_int(width: attr.active_width), speed);
363	}
364
365	static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
366	{
367	static const char *phys_state_str[] = {
368	"<unknown>",
369	"Sleep",
370	"Polling",
371	"Disabled",
372	"PortConfigurationTraining",
373	"LinkUp",
374	"LinkErrorRecovery",
375	"Phy Test",
376	};
377
378	if (phys_state < ARRAY_SIZE(phys_state_str))
379	return phys_state_str[phys_state];
380	return "<unknown>";
381	}
382
383	static ssize_t phys_state_show(struct ib_device *ibdev, u32 port_num,
384	struct ib_port_attribute *unused, char *buf)
385	{
386	struct ib_port_attr attr;
387
388	ssize_t ret;
389
390	ret = ib_query_port(device: ibdev, port_num, port_attr: &attr);
391	if (ret)
392	return ret;
393
394	return sysfs_emit(buf, fmt: "%u: %s\n", attr.phys_state,
395	phys_state_to_str(phys_state: attr.phys_state));
396	}
397
398	static ssize_t link_layer_show(struct ib_device *ibdev, u32 port_num,
399	struct ib_port_attribute *unused, char *buf)
400	{
401	const char *output;
402
403	switch (rdma_port_get_link_layer(device: ibdev, port_num)) {
404	case IB_LINK_LAYER_INFINIBAND:
405	output = "InfiniBand";
406	break;
407	case IB_LINK_LAYER_ETHERNET:
408	output = "Ethernet";
409	break;
410	default:
411	output = "Unknown";
412	break;
413	}
414
415	return sysfs_emit(buf, fmt: "%s\n", output);
416	}
417
418	static IB_PORT_ATTR_RO(state);
419	static IB_PORT_ATTR_RO(lid);
420	static IB_PORT_ATTR_RO(lid_mask_count);
421	static IB_PORT_ATTR_RO(sm_lid);
422	static IB_PORT_ATTR_RO(sm_sl);
423	static IB_PORT_ATTR_RO(cap_mask);
424	static IB_PORT_ATTR_RO(rate);
425	static IB_PORT_ATTR_RO(phys_state);
426	static IB_PORT_ATTR_RO(link_layer);
427
428	static struct attribute *port_default_attrs[] = {
429	&ib_port_attr_state.attr,
430	&ib_port_attr_lid.attr,
431	&ib_port_attr_lid_mask_count.attr,
432	&ib_port_attr_sm_lid.attr,
433	&ib_port_attr_sm_sl.attr,
434	&ib_port_attr_cap_mask.attr,
435	&ib_port_attr_rate.attr,
436	&ib_port_attr_phys_state.attr,
437	&ib_port_attr_link_layer.attr,
438	NULL
439	};
440	ATTRIBUTE_GROUPS(port_default);
441
442	static ssize_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf)
443	{
444	struct net_device *ndev;
445	int ret = -EINVAL;
446
447	rcu_read_lock();
448	ndev = rcu_dereference(gid_attr->ndev);
449	if (ndev)
450	ret = sysfs_emit(buf, fmt: "%s\n", ndev->name);
451	rcu_read_unlock();
452	return ret;
453	}
454
455	static ssize_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
456	{
457	return sysfs_emit(buf, fmt: "%s\n",
458	ib_cache_gid_type_str(gid_type: gid_attr->gid_type));
459	}
460
461	static ssize_t _show_port_gid_attr(
462	struct ib_device *ibdev, u32 port_num, struct ib_port_attribute *attr,
463	char *buf,
464	ssize_t (*print)(const struct ib_gid_attr *gid_attr, char *buf))
465	{
466	struct port_table_attribute *tab_attr =
467	container_of(attr, struct port_table_attribute, attr);
468	const struct ib_gid_attr *gid_attr;
469	ssize_t ret;
470
471	gid_attr = rdma_get_gid_attr(device: ibdev, port_num, index: tab_attr->index);
472	if (IS_ERR(ptr: gid_attr))
473	/* -EINVAL is returned for user space compatibility reasons. */
474	return -EINVAL;
475
476	ret = print(gid_attr, buf);
477	rdma_put_gid_attr(attr: gid_attr);
478	return ret;
479	}
480
481	static ssize_t show_port_gid(struct ib_device *ibdev, u32 port_num,
482	struct ib_port_attribute *attr, char *buf)
483	{
484	struct port_table_attribute *tab_attr =
485	container_of(attr, struct port_table_attribute, attr);
486	const struct ib_gid_attr *gid_attr;
487	int len;
488
489	gid_attr = rdma_get_gid_attr(device: ibdev, port_num, index: tab_attr->index);
490	if (IS_ERR(ptr: gid_attr)) {
491	const union ib_gid zgid = {};
492
493	/* If reading GID fails, it is likely due to GID entry being
494	* empty (invalid) or reserved GID in the table. User space
495	* expects to read GID table entries as long as it given index
496	* is within GID table size. Administrative/debugging tool
497	* fails to query rest of the GID entries if it hits error
498	* while querying a GID of the given index. To avoid user
499	* space throwing such error on fail to read gid, return zero
500	* GID as before. This maintains backward compatibility.
501	*/
502	return sysfs_emit(buf, fmt: "%pI6\n", zgid.raw);
503	}
504
505	len = sysfs_emit(buf, fmt: "%pI6\n", gid_attr->gid.raw);
506	rdma_put_gid_attr(attr: gid_attr);
507	return len;
508	}
509
510	static ssize_t show_port_gid_attr_ndev(struct ib_device *ibdev, u32 port_num,
511	struct ib_port_attribute *attr,
512	char *buf)
513	{
514	return _show_port_gid_attr(ibdev, port_num, attr, buf, print: print_ndev);
515	}
516
517	static ssize_t show_port_gid_attr_gid_type(struct ib_device *ibdev,
518	u32 port_num,
519	struct ib_port_attribute *attr,
520	char *buf)
521	{
522	return _show_port_gid_attr(ibdev, port_num, attr, buf, print: print_gid_type);
523	}
524
525	static ssize_t show_port_pkey(struct ib_device *ibdev, u32 port_num,
526	struct ib_port_attribute *attr, char *buf)
527	{
528	struct port_table_attribute *tab_attr =
529	container_of(attr, struct port_table_attribute, attr);
530	u16 pkey;
531	int ret;
532
533	ret = ib_query_pkey(device: ibdev, port_num, index: tab_attr->index, pkey: &pkey);
534	if (ret)
535	return ret;
536
537	return sysfs_emit(buf, fmt: "0x%04x\n", pkey);
538	}
539
540	#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
541	struct port_table_attribute port_pma_attr_##_name = { \
542	.attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
543	.index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
544	.attr_id = IB_PMA_PORT_COUNTERS, \
545	}
546
547	#define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
548	struct port_table_attribute port_pma_attr_ext_##_name = { \
549	.attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
550	.index = (_offset) | ((_width) << 16), \
551	.attr_id = IB_PMA_PORT_COUNTERS_EXT, \
552	}
553
554	/*
555	* Get a Perfmgmt MAD block of data.
556	* Returns error code or the number of bytes retrieved.
557	*/
558	static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
559	void *data, int offset, size_t size)
560	{
561	struct ib_mad *in_mad;
562	struct ib_mad *out_mad;
563	size_t mad_size = sizeof(*out_mad);
564	u16 out_mad_pkey_index = 0;
565	ssize_t ret;
566
567	if (!dev->ops.process_mad)
568	return -ENOSYS;
569
570	in_mad = kzalloc(size: sizeof(*in_mad), GFP_KERNEL);
571	out_mad = kzalloc(size: sizeof(*out_mad), GFP_KERNEL);
572	if (!in_mad || !out_mad) {
573	ret = -ENOMEM;
574	goto out;
575	}
576
577	in_mad->mad_hdr.base_version = 1;
578	in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
579	in_mad->mad_hdr.class_version = 1;
580	in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
581	in_mad->mad_hdr.attr_id = attr;
582
583	if (attr != IB_PMA_CLASS_PORT_INFO)
584	in_mad->data[41] = port_num; /* PortSelect field */
585
586	if ((dev->ops.process_mad(dev, IB_MAD_IGNORE_MKEY, port_num, NULL, NULL,
587	in_mad, out_mad, &mad_size,
588	&out_mad_pkey_index) &
589	(IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
590	(IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
591	ret = -EINVAL;
592	goto out;
593	}
594	memcpy(data, out_mad->data + offset, size);
595	ret = size;
596	out:
597	kfree(objp: in_mad);
598	kfree(objp: out_mad);
599	return ret;
600	}
601
602	static ssize_t show_pma_counter(struct ib_device *ibdev, u32 port_num,
603	struct ib_port_attribute *attr, char *buf)
604	{
605	struct port_table_attribute *tab_attr =
606	container_of(attr, struct port_table_attribute, attr);
607	int offset = tab_attr->index & 0xffff;
608	int width = (tab_attr->index >> 16) & 0xff;
609	int ret;
610	u8 data[8];
611	int len;
612
613	ret = get_perf_mad(dev: ibdev, port_num, attr: tab_attr->attr_id, data: &data,
614	offset: 40 + offset / 8, size: sizeof(data));
615	if (ret < 0)
616	return ret;
617
618	switch (width) {
619	case 4:
620	len = sysfs_emit(buf, fmt: "%d\n",
621	(*data >> (4 - (offset % 8))) & 0xf);
622	break;
623	case 8:
624	len = sysfs_emit(buf, fmt: "%u\n", *data);
625	break;
626	case 16:
627	len = sysfs_emit(buf, fmt: "%u\n", be16_to_cpup(p: (__be16 *)data));
628	break;
629	case 32:
630	len = sysfs_emit(buf, fmt: "%u\n", be32_to_cpup(p: (__be32 *)data));
631	break;
632	case 64:
633	len = sysfs_emit(buf, fmt: "%llu\n", be64_to_cpup(p: (__be64 *)data));
634	break;
635	default:
636	len = 0;
637	break;
638	}
639
640	return len;
641	}
642
643	static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
644	static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
645	static PORT_PMA_ATTR(link_downed , 2, 8, 56);
646	static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
647	static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
648	static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
649	static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
650	static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
651	static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
652	static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
653	static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
654	static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
655	static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
656	static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
657	static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
658	static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
659	static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
660
661	/*
662	* Counters added by extended set
663	*/
664	static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
665	static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
666	static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
667	static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
668	static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
669	static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
670	static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
671	static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
672
673	static struct attribute *pma_attrs[] = {
674	&port_pma_attr_symbol_error.attr.attr,
675	&port_pma_attr_link_error_recovery.attr.attr,
676	&port_pma_attr_link_downed.attr.attr,
677	&port_pma_attr_port_rcv_errors.attr.attr,
678	&port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
679	&port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
680	&port_pma_attr_port_xmit_discards.attr.attr,
681	&port_pma_attr_port_xmit_constraint_errors.attr.attr,
682	&port_pma_attr_port_rcv_constraint_errors.attr.attr,
683	&port_pma_attr_local_link_integrity_errors.attr.attr,
684	&port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
685	&port_pma_attr_VL15_dropped.attr.attr,
686	&port_pma_attr_port_xmit_data.attr.attr,
687	&port_pma_attr_port_rcv_data.attr.attr,
688	&port_pma_attr_port_xmit_packets.attr.attr,
689	&port_pma_attr_port_rcv_packets.attr.attr,
690	&port_pma_attr_port_xmit_wait.attr.attr,
691	NULL
692	};
693
694	static struct attribute *pma_attrs_ext[] = {
695	&port_pma_attr_symbol_error.attr.attr,
696	&port_pma_attr_link_error_recovery.attr.attr,
697	&port_pma_attr_link_downed.attr.attr,
698	&port_pma_attr_port_rcv_errors.attr.attr,
699	&port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
700	&port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
701	&port_pma_attr_port_xmit_discards.attr.attr,
702	&port_pma_attr_port_xmit_constraint_errors.attr.attr,
703	&port_pma_attr_port_rcv_constraint_errors.attr.attr,
704	&port_pma_attr_local_link_integrity_errors.attr.attr,
705	&port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
706	&port_pma_attr_VL15_dropped.attr.attr,
707	&port_pma_attr_ext_port_xmit_data.attr.attr,
708	&port_pma_attr_ext_port_rcv_data.attr.attr,
709	&port_pma_attr_ext_port_xmit_packets.attr.attr,
710	&port_pma_attr_port_xmit_wait.attr.attr,
711	&port_pma_attr_ext_port_rcv_packets.attr.attr,
712	&port_pma_attr_ext_unicast_rcv_packets.attr.attr,
713	&port_pma_attr_ext_unicast_xmit_packets.attr.attr,
714	&port_pma_attr_ext_multicast_rcv_packets.attr.attr,
715	&port_pma_attr_ext_multicast_xmit_packets.attr.attr,
716	NULL
717	};
718
719	static struct attribute *pma_attrs_noietf[] = {
720	&port_pma_attr_symbol_error.attr.attr,
721	&port_pma_attr_link_error_recovery.attr.attr,
722	&port_pma_attr_link_downed.attr.attr,
723	&port_pma_attr_port_rcv_errors.attr.attr,
724	&port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
725	&port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
726	&port_pma_attr_port_xmit_discards.attr.attr,
727	&port_pma_attr_port_xmit_constraint_errors.attr.attr,
728	&port_pma_attr_port_rcv_constraint_errors.attr.attr,
729	&port_pma_attr_local_link_integrity_errors.attr.attr,
730	&port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
731	&port_pma_attr_VL15_dropped.attr.attr,
732	&port_pma_attr_ext_port_xmit_data.attr.attr,
733	&port_pma_attr_ext_port_rcv_data.attr.attr,
734	&port_pma_attr_ext_port_xmit_packets.attr.attr,
735	&port_pma_attr_ext_port_rcv_packets.attr.attr,
736	&port_pma_attr_port_xmit_wait.attr.attr,
737	NULL
738	};
739
740	static const struct attribute_group pma_group = {
741	.name = "counters",
742	.attrs = pma_attrs
743	};
744
745	static const struct attribute_group pma_group_ext = {
746	.name = "counters",
747	.attrs = pma_attrs_ext
748	};
749
750	static const struct attribute_group pma_group_noietf = {
751	.name = "counters",
752	.attrs = pma_attrs_noietf
753	};
754
755	static void ib_port_release(struct kobject *kobj)
756	{
757	struct ib_port *port = container_of(kobj, struct ib_port, kobj);
758	int i;
759
760	for (i = 0; i != ARRAY_SIZE(port->groups); i++)
761	kfree(objp: port->groups[i].attrs);
762	if (port->hw_stats_data)
763	rdma_free_hw_stats_struct(stats: port->hw_stats_data->stats);
764	kfree(objp: port->hw_stats_data);
765	kvfree(addr: port);
766	}
767
768	static void ib_port_gid_attr_release(struct kobject *kobj)
769	{
770	struct gid_attr_group *gid_attr_group =
771	container_of(kobj, struct gid_attr_group, kobj);
772	int i;
773
774	for (i = 0; i != ARRAY_SIZE(gid_attr_group->groups); i++)
775	kfree(objp: gid_attr_group->groups[i].attrs);
776	kfree(objp: gid_attr_group);
777	}
778
779	static struct kobj_type port_type = {
780	.release = ib_port_release,
781	.sysfs_ops = &port_sysfs_ops,
782	.default_groups = port_default_groups,
783	};
784
785	static struct kobj_type gid_attr_type = {
786	.sysfs_ops = &gid_attr_sysfs_ops,
787	.release = ib_port_gid_attr_release
788	};
789
790	/*
791	* Figure out which counter table to use depending on
792	* the device capabilities.
793	*/
794	static const struct attribute_group *get_counter_table(struct ib_device *dev,
795	int port_num)
796	{
797	struct ib_class_port_info cpi;
798
799	if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
800	data: &cpi, offset: 40, size: sizeof(cpi)) >= 0) {
801	if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
802	/* We have extended counters */
803	return &pma_group_ext;
804
805	if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
806	/* But not the IETF ones */
807	return &pma_group_noietf;
808	}
809
810	/* Fall back to normal counters */
811	return &pma_group;
812	}
813
814	static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
815	u32 port_num, int index)
816	{
817	int ret;
818
819	if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
820	return 0;
821	ret = dev->ops.get_hw_stats(dev, stats, port_num, index);
822	if (ret < 0)
823	return ret;
824	if (ret == stats->num_counters)
825	stats->timestamp = jiffies;
826
827	return 0;
828	}
829
830	static int print_hw_stat(struct ib_device *dev, int port_num,
831	struct rdma_hw_stats *stats, int index, char *buf)
832	{
833	u64 v = rdma_counter_get_hwstat_value(dev, port: port_num, index);
834
835	return sysfs_emit(buf, fmt: "%llu\n", stats->value[index] + v);
836	}
837
838	static ssize_t show_hw_stats(struct ib_device *ibdev,
839	struct rdma_hw_stats *stats, unsigned int index,
840	unsigned int port_num, char *buf)
841	{
842	int ret;
843
844	mutex_lock(&stats->lock);
845	ret = update_hw_stats(dev: ibdev, stats, port_num, index);
846	if (ret)
847	goto unlock;
848	ret = print_hw_stat(dev: ibdev, port_num, stats, index, buf);
849	unlock:
850	mutex_unlock(lock: &stats->lock);
851
852	return ret;
853	}
854
855	static ssize_t show_stats_lifespan(struct ib_device *ibdev,
856	struct rdma_hw_stats *stats,
857	unsigned int index, unsigned int port_num,
858	char *buf)
859	{
860	int msecs;
861
862	mutex_lock(&stats->lock);
863	msecs = jiffies_to_msecs(j: stats->lifespan);
864	mutex_unlock(lock: &stats->lock);
865
866	return sysfs_emit(buf, fmt: "%d\n", msecs);
867	}
868
869	static ssize_t set_stats_lifespan(struct ib_device *ibdev,
870	struct rdma_hw_stats *stats,
871	unsigned int index, unsigned int port_num,
872	const char *buf, size_t count)
873	{
874	int msecs;
875	int jiffies;
876	int ret;
877
878	ret = kstrtoint(s: buf, base: 10, res: &msecs);
879	if (ret)
880	return ret;
881	if (msecs < 0 || msecs > 10000)
882	return -EINVAL;
883	jiffies = msecs_to_jiffies(m: msecs);
884
885	mutex_lock(&stats->lock);
886	stats->lifespan = jiffies;
887	mutex_unlock(lock: &stats->lock);
888
889	return count;
890	}
891
892	static struct hw_stats_device_data *
893	alloc_hw_stats_device(struct ib_device *ibdev)
894	{
895	struct hw_stats_device_data *data;
896	struct rdma_hw_stats *stats;
897
898	if (!ibdev->ops.alloc_hw_device_stats)
899	return ERR_PTR(error: -EOPNOTSUPP);
900	stats = ibdev->ops.alloc_hw_device_stats(ibdev);
901	if (!stats)
902	return ERR_PTR(error: -ENOMEM);
903	if (!stats->descs || stats->num_counters <= 0)
904	goto err_free_stats;
905
906	/*
907	* Two extra attribue elements here, one for the lifespan entry and
908	* one to NULL terminate the list for the sysfs core code
909	*/
910	data = kzalloc(struct_size(data, attrs, size_add(stats->num_counters, 1)),
911	GFP_KERNEL);
912	if (!data)
913	goto err_free_stats;
914	data->group.attrs = kcalloc(n: stats->num_counters + 2,
915	size: sizeof(*data->group.attrs), GFP_KERNEL);
916	if (!data->group.attrs)
917	goto err_free_data;
918
919	data->group.name = "hw_counters";
920	data->stats = stats;
921	return data;
922
923	err_free_data:
924	kfree(objp: data);
925	err_free_stats:
926	rdma_free_hw_stats_struct(stats);
927	return ERR_PTR(error: -ENOMEM);
928	}
929
930	void ib_device_release_hw_stats(struct hw_stats_device_data *data)
931	{
932	kfree(objp: data->group.attrs);
933	rdma_free_hw_stats_struct(stats: data->stats);
934	kfree(objp: data);
935	}
936
937	int ib_setup_device_attrs(struct ib_device *ibdev)
938	{
939	struct hw_stats_device_attribute *attr;
940	struct hw_stats_device_data *data;
941	bool opstat_skipped = false;
942	int i, ret, pos = 0;
943
944	data = alloc_hw_stats_device(ibdev);
945	if (IS_ERR(ptr: data)) {
946	if (PTR_ERR(ptr: data) == -EOPNOTSUPP)
947	return 0;
948	return PTR_ERR(ptr: data);
949	}
950	ibdev->hw_stats_data = data;
951
952	ret = ibdev->ops.get_hw_stats(ibdev, data->stats, 0,
953	data->stats->num_counters);
954	if (ret != data->stats->num_counters) {
955	if (WARN_ON(ret >= 0))
956	return -EINVAL;
957	return ret;
958	}
959
960	data->stats->timestamp = jiffies;
961
962	for (i = 0; i < data->stats->num_counters; i++) {
963	if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) {
964	opstat_skipped = true;
965	continue;
966	}
967
968	WARN_ON(opstat_skipped);
969	attr = &data->attrs[pos];
970	sysfs_attr_init(&attr->attr.attr);
971	attr->attr.attr.name = data->stats->descs[i].name;
972	attr->attr.attr.mode = 0444;
973	attr->attr.show = hw_stat_device_show;
974	attr->show = show_hw_stats;
975	data->group.attrs[pos] = &attr->attr.attr;
976	pos++;
977	}
978
979	attr = &data->attrs[pos];
980	sysfs_attr_init(&attr->attr.attr);
981	attr->attr.attr.name = "lifespan";
982	attr->attr.attr.mode = 0644;
983	attr->attr.show = hw_stat_device_show;
984	attr->show = show_stats_lifespan;
985	attr->attr.store = hw_stat_device_store;
986	attr->store = set_stats_lifespan;
987	data->group.attrs[pos] = &attr->attr.attr;
988	for (i = 0; i != ARRAY_SIZE(ibdev->groups); i++)
989	if (!ibdev->groups[i]) {
990	ibdev->groups[i] = &data->group;
991	return 0;
992	}
993	WARN(true, "struct ib_device->groups is too small");
994	return -EINVAL;
995	}
996
997	static struct hw_stats_port_data *
998	alloc_hw_stats_port(struct ib_port *port, struct attribute_group *group)
999	{
1000	struct ib_device *ibdev = port->ibdev;
1001	struct hw_stats_port_data *data;
1002	struct rdma_hw_stats *stats;
1003
1004	if (!ibdev->ops.alloc_hw_port_stats)
1005	return ERR_PTR(error: -EOPNOTSUPP);
1006	stats = ibdev->ops.alloc_hw_port_stats(port->ibdev, port->port_num);
1007	if (!stats)
1008	return ERR_PTR(error: -ENOMEM);
1009	if (!stats->descs || stats->num_counters <= 0)
1010	goto err_free_stats;
1011
1012	/*
1013	* Two extra attribue elements here, one for the lifespan entry and
1014	* one to NULL terminate the list for the sysfs core code
1015	*/
1016	data = kzalloc(struct_size(data, attrs, size_add(stats->num_counters, 1)),
1017	GFP_KERNEL);
1018	if (!data)
1019	goto err_free_stats;
1020	group->attrs = kcalloc(n: stats->num_counters + 2,
1021	size: sizeof(*group->attrs), GFP_KERNEL);
1022	if (!group->attrs)
1023	goto err_free_data;
1024
1025	group->name = "hw_counters";
1026	data->stats = stats;
1027	return data;
1028
1029	err_free_data:
1030	kfree(objp: data);
1031	err_free_stats:
1032	rdma_free_hw_stats_struct(stats);
1033	return ERR_PTR(error: -ENOMEM);
1034	}
1035
1036	static int setup_hw_port_stats(struct ib_port *port,
1037	struct attribute_group *group)
1038	{
1039	struct hw_stats_port_attribute *attr;
1040	struct hw_stats_port_data *data;
1041	bool opstat_skipped = false;
1042	int i, ret, pos = 0;
1043
1044	data = alloc_hw_stats_port(port, group);
1045	if (IS_ERR(ptr: data))
1046	return PTR_ERR(ptr: data);
1047
1048	ret = port->ibdev->ops.get_hw_stats(port->ibdev, data->stats,
1049	port->port_num,
1050	data->stats->num_counters);
1051	if (ret != data->stats->num_counters) {
1052	if (WARN_ON(ret >= 0))
1053	return -EINVAL;
1054	return ret;
1055	}
1056
1057	data->stats->timestamp = jiffies;
1058
1059	for (i = 0; i < data->stats->num_counters; i++) {
1060	if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) {
1061	opstat_skipped = true;
1062	continue;
1063	}
1064
1065	WARN_ON(opstat_skipped);
1066	attr = &data->attrs[pos];
1067	sysfs_attr_init(&attr->attr.attr);
1068	attr->attr.attr.name = data->stats->descs[i].name;
1069	attr->attr.attr.mode = 0444;
1070	attr->attr.show = hw_stat_port_show;
1071	attr->show = show_hw_stats;
1072	group->attrs[pos] = &attr->attr.attr;
1073	pos++;
1074	}
1075
1076	attr = &data->attrs[pos];
1077	sysfs_attr_init(&attr->attr.attr);
1078	attr->attr.attr.name = "lifespan";
1079	attr->attr.attr.mode = 0644;
1080	attr->attr.show = hw_stat_port_show;
1081	attr->show = show_stats_lifespan;
1082	attr->attr.store = hw_stat_port_store;
1083	attr->store = set_stats_lifespan;
1084	group->attrs[pos] = &attr->attr.attr;
1085
1086	port->hw_stats_data = data;
1087	return 0;
1088	}
1089
1090	struct rdma_hw_stats *ib_get_hw_stats_port(struct ib_device *ibdev,
1091	u32 port_num)
1092	{
1093	if (!ibdev->port_data || !rdma_is_port_valid(device: ibdev, port: port_num) ||
1094	!ibdev->port_data[port_num].sysfs->hw_stats_data)
1095	return NULL;
1096	return ibdev->port_data[port_num].sysfs->hw_stats_data->stats;
1097	}
1098
1099	static int
1100	alloc_port_table_group(const char *name, struct attribute_group *group,
1101	struct port_table_attribute *attrs, size_t num,
1102	ssize_t (*show)(struct ib_device *ibdev, u32 port_num,
1103	struct ib_port_attribute *, char *buf))
1104	{
1105	struct attribute **attr_list;
1106	int i;
1107
1108	attr_list = kcalloc(n: num + 1, size: sizeof(*attr_list), GFP_KERNEL);
1109	if (!attr_list)
1110	return -ENOMEM;
1111
1112	for (i = 0; i < num; i++) {
1113	struct port_table_attribute *element = &attrs[i];
1114
1115	if (snprintf(buf: element->name, size: sizeof(element->name), fmt: "%d", i) >=
1116	sizeof(element->name))
1117	goto err;
1118
1119	sysfs_attr_init(&element->attr.attr);
1120	element->attr.attr.name = element->name;
1121	element->attr.attr.mode = 0444;
1122	element->attr.show = show;
1123	element->index = i;
1124
1125	attr_list[i] = &element->attr.attr;
1126	}
1127	group->name = name;
1128	group->attrs = attr_list;
1129	return 0;
1130	err:
1131	kfree(objp: attr_list);
1132	return -EINVAL;
1133	}
1134
1135	/*
1136	* Create the sysfs:
1137	* ibp0s9/ports/XX/gid_attrs/{ndevs,types}/YYY
1138	* YYY is the gid table index in decimal
1139	*/
1140	static int setup_gid_attrs(struct ib_port *port,
1141	const struct ib_port_attr *attr)
1142	{
1143	struct gid_attr_group *gid_attr_group;
1144	int ret;
1145
1146	gid_attr_group = kzalloc(struct_size(gid_attr_group, attrs_list,
1147	size_mul(attr->gid_tbl_len, 2)),
1148	GFP_KERNEL);
1149	if (!gid_attr_group)
1150	return -ENOMEM;
1151	gid_attr_group->port = port;
1152	kobject_init(kobj: &gid_attr_group->kobj, ktype: &gid_attr_type);
1153
1154	ret = alloc_port_table_group(name: "ndevs", group: &gid_attr_group->groups[0],
1155	attrs: gid_attr_group->attrs_list,
1156	num: attr->gid_tbl_len,
1157	show: show_port_gid_attr_ndev);
1158	if (ret)
1159	goto err_put;
1160	gid_attr_group->groups_list[0] = &gid_attr_group->groups[0];
1161
1162	ret = alloc_port_table_group(
1163	name: "types", group: &gid_attr_group->groups[1],
1164	attrs: gid_attr_group->attrs_list + attr->gid_tbl_len,
1165	num: attr->gid_tbl_len, show: show_port_gid_attr_gid_type);
1166	if (ret)
1167	goto err_put;
1168	gid_attr_group->groups_list[1] = &gid_attr_group->groups[1];
1169
1170	ret = kobject_add(kobj: &gid_attr_group->kobj, parent: &port->kobj, fmt: "gid_attrs");
1171	if (ret)
1172	goto err_put;
1173	ret = sysfs_create_groups(kobj: &gid_attr_group->kobj,
1174	groups: gid_attr_group->groups_list);
1175	if (ret)
1176	goto err_del;
1177	port->gid_attr_group = gid_attr_group;
1178	return 0;
1179
1180	err_del:
1181	kobject_del(kobj: &gid_attr_group->kobj);
1182	err_put:
1183	kobject_put(kobj: &gid_attr_group->kobj);
1184	return ret;
1185	}
1186
1187	static void destroy_gid_attrs(struct ib_port *port)
1188	{
1189	struct gid_attr_group *gid_attr_group = port->gid_attr_group;
1190
1191	if (!gid_attr_group)
1192	return;
1193	sysfs_remove_groups(kobj: &gid_attr_group->kobj, groups: gid_attr_group->groups_list);
1194	kobject_del(kobj: &gid_attr_group->kobj);
1195	kobject_put(kobj: &gid_attr_group->kobj);
1196	}
1197
1198	/*
1199	* Create the sysfs:
1200	* ibp0s9/ports/XX/{gids,pkeys,counters}/YYY
1201	*/
1202	static struct ib_port *setup_port(struct ib_core_device *coredev, int port_num,
1203	const struct ib_port_attr *attr)
1204	{
1205	struct ib_device *device = rdma_device_to_ibdev(device: &coredev->dev);
1206	bool is_full_dev = &device->coredev == coredev;
1207	const struct attribute_group **cur_group;
1208	struct ib_port *p;
1209	int ret;
1210
1211	p = kvzalloc(struct_size(p, attrs_list,
1212	size_add(attr->gid_tbl_len, attr->pkey_tbl_len)),
1213	GFP_KERNEL);
1214	if (!p)
1215	return ERR_PTR(error: -ENOMEM);
1216	p->ibdev = device;
1217	p->port_num = port_num;
1218	kobject_init(kobj: &p->kobj, ktype: &port_type);
1219
1220	if (device->port_data && is_full_dev)
1221	device->port_data[port_num].sysfs = p;
1222
1223	cur_group = p->groups_list;
1224	ret = alloc_port_table_group(name: "gids", group: &p->groups[0], attrs: p->attrs_list,
1225	num: attr->gid_tbl_len, show: show_port_gid);
1226	if (ret)
1227	goto err_put;
1228	*cur_group++ = &p->groups[0];
1229
1230	if (attr->pkey_tbl_len) {
1231	ret = alloc_port_table_group(name: "pkeys", group: &p->groups[1],
1232	attrs: p->attrs_list + attr->gid_tbl_len,
1233	num: attr->pkey_tbl_len, show: show_port_pkey);
1234	if (ret)
1235	goto err_put;
1236	*cur_group++ = &p->groups[1];
1237	}
1238
1239	/*
1240	* If port == 0, it means hw_counters are per device and not per
1241	* port, so holder should be device. Therefore skip per port
1242	* counter initialization.
1243	*/
1244	if (port_num && is_full_dev) {
1245	ret = setup_hw_port_stats(port: p, group: &p->groups[2]);
1246	if (ret && ret != -EOPNOTSUPP)
1247	goto err_put;
1248	if (!ret)
1249	*cur_group++ = &p->groups[2];
1250	}
1251
1252	if (device->ops.process_mad && is_full_dev)
1253	*cur_group++ = get_counter_table(dev: device, port_num);
1254
1255	ret = kobject_add(kobj: &p->kobj, parent: coredev->ports_kobj, fmt: "%d", port_num);
1256	if (ret)
1257	goto err_put;
1258	ret = sysfs_create_groups(kobj: &p->kobj, groups: p->groups_list);
1259	if (ret)
1260	goto err_del;
1261	if (is_full_dev) {
1262	ret = sysfs_create_groups(kobj: &p->kobj, groups: device->ops.port_groups);
1263	if (ret)
1264	goto err_groups;
1265	}
1266
1267	list_add_tail(new: &p->kobj.entry, head: &coredev->port_list);
1268	return p;
1269
1270	err_groups:
1271	sysfs_remove_groups(kobj: &p->kobj, groups: p->groups_list);
1272	err_del:
1273	kobject_del(kobj: &p->kobj);
1274	err_put:
1275	if (device->port_data && is_full_dev)
1276	device->port_data[port_num].sysfs = NULL;
1277	kobject_put(kobj: &p->kobj);
1278	return ERR_PTR(error: ret);
1279	}
1280
1281	static void destroy_port(struct ib_core_device *coredev, struct ib_port *port)
1282	{
1283	bool is_full_dev = &port->ibdev->coredev == coredev;
1284
1285	list_del(entry: &port->kobj.entry);
1286	if (is_full_dev)
1287	sysfs_remove_groups(kobj: &port->kobj, groups: port->ibdev->ops.port_groups);
1288
1289	sysfs_remove_groups(kobj: &port->kobj, groups: port->groups_list);
1290	kobject_del(kobj: &port->kobj);
1291
1292	if (port->ibdev->port_data &&
1293	port->ibdev->port_data[port->port_num].sysfs == port)
1294	port->ibdev->port_data[port->port_num].sysfs = NULL;
1295
1296	kobject_put(kobj: &port->kobj);
1297	}
1298
1299	static const char *node_type_string(int node_type)
1300	{
1301	switch (node_type) {
1302	case RDMA_NODE_IB_CA:
1303	return "CA";
1304	case RDMA_NODE_IB_SWITCH:
1305	return "switch";
1306	case RDMA_NODE_IB_ROUTER:
1307	return "router";
1308	case RDMA_NODE_RNIC:
1309	return "RNIC";
1310	case RDMA_NODE_USNIC:
1311	return "usNIC";
1312	case RDMA_NODE_USNIC_UDP:
1313	return "usNIC UDP";
1314	case RDMA_NODE_UNSPECIFIED:
1315	return "unspecified";
1316	}
1317	return "<unknown>";
1318	}
1319
1320	static ssize_t node_type_show(struct device *device,
1321	struct device_attribute *attr, char *buf)
1322	{
1323	struct ib_device *dev = rdma_device_to_ibdev(device);
1324
1325	return sysfs_emit(buf, fmt: "%u: %s\n", dev->node_type,
1326	node_type_string(node_type: dev->node_type));
1327	}
1328	static DEVICE_ATTR_RO(node_type);
1329
1330	static ssize_t sys_image_guid_show(struct device *device,
1331	struct device_attribute *dev_attr, char *buf)
1332	{
1333	struct ib_device *dev = rdma_device_to_ibdev(device);
1334	__be16 *guid = (__be16 *)&dev->attrs.sys_image_guid;
1335
1336	return sysfs_emit(buf, fmt: "%04x:%04x:%04x:%04x\n",
1337	be16_to_cpu(guid[0]),
1338	be16_to_cpu(guid[1]),
1339	be16_to_cpu(guid[2]),
1340	be16_to_cpu(guid[3]));
1341	}
1342	static DEVICE_ATTR_RO(sys_image_guid);
1343
1344	static ssize_t node_guid_show(struct device *device,
1345	struct device_attribute *attr, char *buf)
1346	{
1347	struct ib_device *dev = rdma_device_to_ibdev(device);
1348	__be16 *node_guid = (__be16 *)&dev->node_guid;
1349
1350	return sysfs_emit(buf, fmt: "%04x:%04x:%04x:%04x\n",
1351	be16_to_cpu(node_guid[0]),
1352	be16_to_cpu(node_guid[1]),
1353	be16_to_cpu(node_guid[2]),
1354	be16_to_cpu(node_guid[3]));
1355	}
1356	static DEVICE_ATTR_RO(node_guid);
1357
1358	static ssize_t node_desc_show(struct device *device,
1359	struct device_attribute *attr, char *buf)
1360	{
1361	struct ib_device *dev = rdma_device_to_ibdev(device);
1362
1363	return sysfs_emit(buf, fmt: "%.64s\n", dev->node_desc);
1364	}
1365
1366	static ssize_t node_desc_store(struct device *device,
1367	struct device_attribute *attr,
1368	const char *buf, size_t count)
1369	{
1370	struct ib_device *dev = rdma_device_to_ibdev(device);
1371	struct ib_device_modify desc = {};
1372	int ret;
1373
1374	if (!dev->ops.modify_device)
1375	return -EOPNOTSUPP;
1376
1377	memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1378	ret = ib_modify_device(device: dev, device_modify_mask: IB_DEVICE_MODIFY_NODE_DESC, device_modify: &desc);
1379	if (ret)
1380	return ret;
1381
1382	return count;
1383	}
1384	static DEVICE_ATTR_RW(node_desc);
1385
1386	static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr,
1387	char *buf)
1388	{
1389	struct ib_device *dev = rdma_device_to_ibdev(device);
1390	char version[IB_FW_VERSION_NAME_MAX] = {};
1391
1392	ib_get_device_fw_str(device: dev, str: version);
1393
1394	return sysfs_emit(buf, fmt: "%s\n", version);
1395	}
1396	static DEVICE_ATTR_RO(fw_ver);
1397
1398	static struct attribute *ib_dev_attrs[] = {
1399	&dev_attr_node_type.attr,
1400	&dev_attr_node_guid.attr,
1401	&dev_attr_sys_image_guid.attr,
1402	&dev_attr_fw_ver.attr,
1403	&dev_attr_node_desc.attr,
1404	NULL,
1405	};
1406
1407	const struct attribute_group ib_dev_attr_group = {
1408	.attrs = ib_dev_attrs,
1409	};
1410
1411	void ib_free_port_attrs(struct ib_core_device *coredev)
1412	{
1413	struct kobject *p, *t;
1414
1415	list_for_each_entry_safe(p, t, &coredev->port_list, entry) {
1416	struct ib_port *port = container_of(p, struct ib_port, kobj);
1417
1418	destroy_gid_attrs(port);
1419	destroy_port(coredev, port);
1420	}
1421
1422	kobject_put(kobj: coredev->ports_kobj);
1423	}
1424
1425	int ib_setup_port_attrs(struct ib_core_device *coredev)
1426	{
1427	struct ib_device *device = rdma_device_to_ibdev(device: &coredev->dev);
1428	u32 port_num;
1429	int ret;
1430
1431	coredev->ports_kobj = kobject_create_and_add(name: "ports",
1432	parent: &coredev->dev.kobj);
1433	if (!coredev->ports_kobj)
1434	return -ENOMEM;
1435
1436	rdma_for_each_port (device, port_num) {
1437	struct ib_port_attr attr;
1438	struct ib_port *port;
1439
1440	ret = ib_query_port(device, port_num, port_attr: &attr);
1441	if (ret)
1442	goto err_put;
1443
1444	port = setup_port(coredev, port_num, attr: &attr);
1445	if (IS_ERR(ptr: port)) {
1446	ret = PTR_ERR(ptr: port);
1447	goto err_put;
1448	}
1449
1450	ret = setup_gid_attrs(port, attr: &attr);
1451	if (ret)
1452	goto err_put;
1453	}
1454	return 0;
1455
1456	err_put:
1457	ib_free_port_attrs(coredev);
1458	return ret;
1459	}
1460
1461	/**
1462	* ib_port_register_client_groups - Add an ib_client's attributes to the port
1463	*
1464	* @ibdev: IB device to add counters
1465	* @port_num: valid port number
1466	* @groups: Group list of attributes
1467	*
1468	* Do not use. Only for legacy sysfs compatibility.
1469	*/
1470	int ib_port_register_client_groups(struct ib_device *ibdev, u32 port_num,
1471	const struct attribute_group **groups)
1472	{
1473	return sysfs_create_groups(kobj: &ibdev->port_data[port_num].sysfs->kobj,
1474	groups);
1475	}
1476	EXPORT_SYMBOL(ib_port_register_client_groups);
1477
1478	void ib_port_unregister_client_groups(struct ib_device *ibdev, u32 port_num,
1479	const struct attribute_group **groups)
1480	{
1481	return sysfs_remove_groups(kobj: &ibdev->port_data[port_num].sysfs->kobj,
1482	groups);
1483	}
1484	EXPORT_SYMBOL(ib_port_unregister_client_groups);
1485