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