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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / infiniband / core / sysfs.c
blob087682e6969e5ecb00064f60f34dd93a0811647a
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
48 struct ib_port;
49
50 struct gid_attr_group {
51 struct ib_port *port;
52 struct kobject kobj;
53 struct attribute_group ndev;
54 struct attribute_group type;
55 };
56 struct ib_port {
57 struct kobject kobj;
58 struct ib_device *ibdev;
59 struct gid_attr_group *gid_attr_group;
60 struct attribute_group gid_group;
61 struct attribute_group pkey_group;
62 struct attribute_group *pma_table;
63 struct attribute_group *hw_stats_ag;
64 struct rdma_hw_stats *hw_stats;
65 u8 port_num;
66 };
67
68 struct port_attribute {
69 struct attribute attr;
70 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
71 ssize_t (*store)(struct ib_port *, struct port_attribute *,
72 const char *buf, size_t count);
73 };
74
75 #define PORT_ATTR(_name, _mode, _show, _store) \
76 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
77
78 #define PORT_ATTR_RO(_name) \
79 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
80
81 struct port_table_attribute {
82 struct port_attribute attr;
83 char name[8];
84 int index;
85 __be16 attr_id;
86 };
87
88 struct hw_stats_attribute {
89 struct attribute attr;
90 ssize_t (*show)(struct kobject *kobj,
91 struct attribute *attr, char *buf);
92 ssize_t (*store)(struct kobject *kobj,
93 struct attribute *attr,
94 const char *buf,
95 size_t count);
96 int index;
97 u8 port_num;
98 };
99
100 static ssize_t port_attr_show(struct kobject *kobj,
101 struct attribute *attr, char *buf)
102 {
103 struct port_attribute *port_attr =
104 container_of(attr, struct port_attribute, attr);
105 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
106
107 if (!port_attr->show)
108 return -EIO;
109
110 return port_attr->show(p, port_attr, buf);
111 }
112
113 static ssize_t port_attr_store(struct kobject *kobj,
114 struct attribute *attr,
115 const char *buf, size_t count)
116 {
117 struct port_attribute *port_attr =
118 container_of(attr, struct port_attribute, attr);
119 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
120
121 if (!port_attr->store)
122 return -EIO;
123 return port_attr->store(p, port_attr, buf, count);
124 }
125
126 static const struct sysfs_ops port_sysfs_ops = {
127 .show = port_attr_show,
128 .store = port_attr_store
129 };
130
131 static ssize_t gid_attr_show(struct kobject *kobj,
132 struct attribute *attr, char *buf)
133 {
134 struct port_attribute *port_attr =
135 container_of(attr, struct port_attribute, attr);
136 struct ib_port *p = container_of(kobj, struct gid_attr_group,
137 kobj)->port;
138
139 if (!port_attr->show)
140 return -EIO;
141
142 return port_attr->show(p, port_attr, buf);
143 }
144
145 static const struct sysfs_ops gid_attr_sysfs_ops = {
146 .show = gid_attr_show
147 };
148
149 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
150 char *buf)
151 {
152 struct ib_port_attr attr;
153 ssize_t ret;
154
155 static const char *state_name[] = {
156 [IB_PORT_NOP] = "NOP",
157 [IB_PORT_DOWN] = "DOWN",
158 [IB_PORT_INIT] = "INIT",
159 [IB_PORT_ARMED] = "ARMED",
160 [IB_PORT_ACTIVE] = "ACTIVE",
161 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
162 };
163
164 ret = ib_query_port(p->ibdev, p->port_num, &attr);
165 if (ret)
166 return ret;
167
168 return sprintf(buf, "%d: %s\n", attr.state,
169 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
170 state_name[attr.state] : "UNKNOWN");
171 }
172
173 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
174 char *buf)
175 {
176 struct ib_port_attr attr;
177 ssize_t ret;
178
179 ret = ib_query_port(p->ibdev, p->port_num, &attr);
180 if (ret)
181 return ret;
182
183 return sprintf(buf, "0x%x\n", attr.lid);
184 }
185
186 static ssize_t lid_mask_count_show(struct ib_port *p,
187 struct port_attribute *unused,
188 char *buf)
189 {
190 struct ib_port_attr attr;
191 ssize_t ret;
192
193 ret = ib_query_port(p->ibdev, p->port_num, &attr);
194 if (ret)
195 return ret;
196
197 return sprintf(buf, "%d\n", attr.lmc);
198 }
199
200 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
201 char *buf)
202 {
203 struct ib_port_attr attr;
204 ssize_t ret;
205
206 ret = ib_query_port(p->ibdev, p->port_num, &attr);
207 if (ret)
208 return ret;
209
210 return sprintf(buf, "0x%x\n", attr.sm_lid);
211 }
212
213 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
214 char *buf)
215 {
216 struct ib_port_attr attr;
217 ssize_t ret;
218
219 ret = ib_query_port(p->ibdev, p->port_num, &attr);
220 if (ret)
221 return ret;
222
223 return sprintf(buf, "%d\n", attr.sm_sl);
224 }
225
226 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
227 char *buf)
228 {
229 struct ib_port_attr attr;
230 ssize_t ret;
231
232 ret = ib_query_port(p->ibdev, p->port_num, &attr);
233 if (ret)
234 return ret;
235
236 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
237 }
238
239 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
240 char *buf)
241 {
242 struct ib_port_attr attr;
243 char *speed = "";
244 int rate; /* in deci-Gb/sec */
245 ssize_t ret;
246
247 ret = ib_query_port(p->ibdev, p->port_num, &attr);
248 if (ret)
249 return ret;
250
251 switch (attr.active_speed) {
252 case IB_SPEED_DDR:
253 speed = " DDR";
254 rate = 50;
255 break;
256 case IB_SPEED_QDR:
257 speed = " QDR";
258 rate = 100;
259 break;
260 case IB_SPEED_FDR10:
261 speed = " FDR10";
262 rate = 100;
263 break;
264 case IB_SPEED_FDR:
265 speed = " FDR";
266 rate = 140;
267 break;
268 case IB_SPEED_EDR:
269 speed = " EDR";
270 rate = 250;
271 break;
272 case IB_SPEED_HDR:
273 speed = " HDR";
274 rate = 500;
275 break;
276 case IB_SPEED_SDR:
277 default: /* default to SDR for invalid rates */
278 speed = " SDR";
279 rate = 25;
280 break;
281 }
282
283 rate *= ib_width_enum_to_int(attr.active_width);
284 if (rate < 0)
285 return -EINVAL;
286
287 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
288 rate / 10, rate % 10 ? ".5" : "",
289 ib_width_enum_to_int(attr.active_width), speed);
290 }
291
292 static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
293 {
294 static const char * phys_state_str[] = {
295 "<unknown>",
296 "Sleep",
297 "Polling",
298 "Disabled",
299 "PortConfigurationTraining",
300 "LinkUp",
301 "LinkErrorRecovery",
302 "Phy Test",
303 };
304
305 if (phys_state < ARRAY_SIZE(phys_state_str))
306 return phys_state_str[phys_state];
307 return "<unknown>";
308 }
309
310 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
311 char *buf)
312 {
313 struct ib_port_attr attr;
314
315 ssize_t ret;
316
317 ret = ib_query_port(p->ibdev, p->port_num, &attr);
318 if (ret)
319 return ret;
320
321 return sprintf(buf, "%d: %s\n", attr.phys_state,
322 phys_state_to_str(attr.phys_state));
323 }
324
325 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
326 char *buf)
327 {
328 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
329 case IB_LINK_LAYER_INFINIBAND:
330 return sprintf(buf, "%s\n", "InfiniBand");
331 case IB_LINK_LAYER_ETHERNET:
332 return sprintf(buf, "%s\n", "Ethernet");
333 default:
334 return sprintf(buf, "%s\n", "Unknown");
335 }
336 }
337
338 static PORT_ATTR_RO(state);
339 static PORT_ATTR_RO(lid);
340 static PORT_ATTR_RO(lid_mask_count);
341 static PORT_ATTR_RO(sm_lid);
342 static PORT_ATTR_RO(sm_sl);
343 static PORT_ATTR_RO(cap_mask);
344 static PORT_ATTR_RO(rate);
345 static PORT_ATTR_RO(phys_state);
346 static PORT_ATTR_RO(link_layer);
347
348 static struct attribute *port_default_attrs[] = {
349 &port_attr_state.attr,
350 &port_attr_lid.attr,
351 &port_attr_lid_mask_count.attr,
352 &port_attr_sm_lid.attr,
353 &port_attr_sm_sl.attr,
354 &port_attr_cap_mask.attr,
355 &port_attr_rate.attr,
356 &port_attr_phys_state.attr,
357 &port_attr_link_layer.attr,
358 NULL
359 };
360
361 static size_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf)
362 {
363 struct net_device *ndev;
364 size_t ret = -EINVAL;
365
366 rcu_read_lock();
367 ndev = rcu_dereference(gid_attr->ndev);
368 if (ndev)
369 ret = sprintf(buf, "%s\n", ndev->name);
370 rcu_read_unlock();
371 return ret;
372 }
373
374 static size_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
375 {
376 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
377 }
378
379 static ssize_t _show_port_gid_attr(
380 struct ib_port *p, struct port_attribute *attr, char *buf,
381 size_t (*print)(const struct ib_gid_attr *gid_attr, char *buf))
382 {
383 struct port_table_attribute *tab_attr =
384 container_of(attr, struct port_table_attribute, attr);
385 const struct ib_gid_attr *gid_attr;
386 ssize_t ret;
387
388 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
389 if (IS_ERR(gid_attr))
390 return PTR_ERR(gid_attr);
391
392 ret = print(gid_attr, buf);
393 rdma_put_gid_attr(gid_attr);
394 return ret;
395 }
396
397 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
398 char *buf)
399 {
400 struct port_table_attribute *tab_attr =
401 container_of(attr, struct port_table_attribute, attr);
402 const struct ib_gid_attr *gid_attr;
403 ssize_t ret;
404
405 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
406 if (IS_ERR(gid_attr)) {
407 const union ib_gid zgid = {};
408
409 /* If reading GID fails, it is likely due to GID entry being
410 * empty (invalid) or reserved GID in the table. User space
411 * expects to read GID table entries as long as it given index
412 * is within GID table size. Administrative/debugging tool
413 * fails to query rest of the GID entries if it hits error
414 * while querying a GID of the given index. To avoid user
415 * space throwing such error on fail to read gid, return zero
416 * GID as before. This maintains backward compatibility.
417 */
418 return sprintf(buf, "%pI6\n", zgid.raw);
419 }
420
421 ret = sprintf(buf, "%pI6\n", gid_attr->gid.raw);
422 rdma_put_gid_attr(gid_attr);
423 return ret;
424 }
425
426 static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
427 struct port_attribute *attr, char *buf)
428 {
429 return _show_port_gid_attr(p, attr, buf, print_ndev);
430 }
431
432 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
433 struct port_attribute *attr,
434 char *buf)
435 {
436 return _show_port_gid_attr(p, attr, buf, print_gid_type);
437 }
438
439 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
440 char *buf)
441 {
442 struct port_table_attribute *tab_attr =
443 container_of(attr, struct port_table_attribute, attr);
444 u16 pkey;
445 ssize_t ret;
446
447 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
448 if (ret)
449 return ret;
450
451 return sprintf(buf, "0x%04x\n", pkey);
452 }
453
454 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
455 struct port_table_attribute port_pma_attr_##_name = { \
456 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
457 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
458 .attr_id = IB_PMA_PORT_COUNTERS , \
459 }
460
461 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
462 struct port_table_attribute port_pma_attr_ext_##_name = { \
463 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
464 .index = (_offset) | ((_width) << 16), \
465 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
466 }
467
468 /*
469 * Get a Perfmgmt MAD block of data.
470 * Returns error code or the number of bytes retrieved.
471 */
472 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
473 void *data, int offset, size_t size)
474 {
475 struct ib_mad *in_mad;
476 struct ib_mad *out_mad;
477 size_t mad_size = sizeof(*out_mad);
478 u16 out_mad_pkey_index = 0;
479 ssize_t ret;
480
481 if (!dev->ops.process_mad)
482 return -ENOSYS;
483
484 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
485 out_mad = kzalloc(sizeof(*out_mad), GFP_KERNEL);
486 if (!in_mad || !out_mad) {
487 ret = -ENOMEM;
488 goto out;
489 }
490
491 in_mad->mad_hdr.base_version = 1;
492 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
493 in_mad->mad_hdr.class_version = 1;
494 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
495 in_mad->mad_hdr.attr_id = attr;
496
497 if (attr != IB_PMA_CLASS_PORT_INFO)
498 in_mad->data[41] = port_num; /* PortSelect field */
499
500 if ((dev->ops.process_mad(dev, IB_MAD_IGNORE_MKEY, port_num, NULL, NULL,
501 in_mad, out_mad, &mad_size,
502 &out_mad_pkey_index) &
503 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
504 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
505 ret = -EINVAL;
506 goto out;
507 }
508 memcpy(data, out_mad->data + offset, size);
509 ret = size;
510 out:
511 kfree(in_mad);
512 kfree(out_mad);
513 return ret;
514 }
515
516 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
517 char *buf)
518 {
519 struct port_table_attribute *tab_attr =
520 container_of(attr, struct port_table_attribute, attr);
521 int offset = tab_attr->index & 0xffff;
522 int width = (tab_attr->index >> 16) & 0xff;
523 ssize_t ret;
524 u8 data[8];
525
526 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
527 40 + offset / 8, sizeof(data));
528 if (ret < 0)
529 return ret;
530
531 switch (width) {
532 case 4:
533 ret = sprintf(buf, "%u\n", (*data >>
534 (4 - (offset % 8))) & 0xf);
535 break;
536 case 8:
537 ret = sprintf(buf, "%u\n", *data);
538 break;
539 case 16:
540 ret = sprintf(buf, "%u\n",
541 be16_to_cpup((__be16 *)data));
542 break;
543 case 32:
544 ret = sprintf(buf, "%u\n",
545 be32_to_cpup((__be32 *)data));
546 break;
547 case 64:
548 ret = sprintf(buf, "%llu\n",
549 be64_to_cpup((__be64 *)data));
550 break;
551
552 default:
553 ret = 0;
554 }
555
556 return ret;
557 }
558
559 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
560 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
561 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
562 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
563 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
564 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
565 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
566 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
567 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
568 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
569 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
570 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
571 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
572 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
573 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
574 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
575 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
576
577 /*
578 * Counters added by extended set
579 */
580 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
581 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
582 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
583 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
584 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
585 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
586 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
587 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
588
589 static struct attribute *pma_attrs[] = {
590 &port_pma_attr_symbol_error.attr.attr,
591 &port_pma_attr_link_error_recovery.attr.attr,
592 &port_pma_attr_link_downed.attr.attr,
593 &port_pma_attr_port_rcv_errors.attr.attr,
594 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
595 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
596 &port_pma_attr_port_xmit_discards.attr.attr,
597 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
598 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
599 &port_pma_attr_local_link_integrity_errors.attr.attr,
600 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
601 &port_pma_attr_VL15_dropped.attr.attr,
602 &port_pma_attr_port_xmit_data.attr.attr,
603 &port_pma_attr_port_rcv_data.attr.attr,
604 &port_pma_attr_port_xmit_packets.attr.attr,
605 &port_pma_attr_port_rcv_packets.attr.attr,
606 &port_pma_attr_port_xmit_wait.attr.attr,
607 NULL
608 };
609
610 static struct attribute *pma_attrs_ext[] = {
611 &port_pma_attr_symbol_error.attr.attr,
612 &port_pma_attr_link_error_recovery.attr.attr,
613 &port_pma_attr_link_downed.attr.attr,
614 &port_pma_attr_port_rcv_errors.attr.attr,
615 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
616 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
617 &port_pma_attr_port_xmit_discards.attr.attr,
618 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
619 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
620 &port_pma_attr_local_link_integrity_errors.attr.attr,
621 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
622 &port_pma_attr_VL15_dropped.attr.attr,
623 &port_pma_attr_ext_port_xmit_data.attr.attr,
624 &port_pma_attr_ext_port_rcv_data.attr.attr,
625 &port_pma_attr_ext_port_xmit_packets.attr.attr,
626 &port_pma_attr_port_xmit_wait.attr.attr,
627 &port_pma_attr_ext_port_rcv_packets.attr.attr,
628 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
629 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
630 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
631 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
632 NULL
633 };
634
635 static struct attribute *pma_attrs_noietf[] = {
636 &port_pma_attr_symbol_error.attr.attr,
637 &port_pma_attr_link_error_recovery.attr.attr,
638 &port_pma_attr_link_downed.attr.attr,
639 &port_pma_attr_port_rcv_errors.attr.attr,
640 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
641 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
642 &port_pma_attr_port_xmit_discards.attr.attr,
643 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
644 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
645 &port_pma_attr_local_link_integrity_errors.attr.attr,
646 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
647 &port_pma_attr_VL15_dropped.attr.attr,
648 &port_pma_attr_ext_port_xmit_data.attr.attr,
649 &port_pma_attr_ext_port_rcv_data.attr.attr,
650 &port_pma_attr_ext_port_xmit_packets.attr.attr,
651 &port_pma_attr_ext_port_rcv_packets.attr.attr,
652 &port_pma_attr_port_xmit_wait.attr.attr,
653 NULL
654 };
655
656 static struct attribute_group pma_group = {
657 .name = "counters",
658 .attrs = pma_attrs
659 };
660
661 static struct attribute_group pma_group_ext = {
662 .name = "counters",
663 .attrs = pma_attrs_ext
664 };
665
666 static struct attribute_group pma_group_noietf = {
667 .name = "counters",
668 .attrs = pma_attrs_noietf
669 };
670
671 static void ib_port_release(struct kobject *kobj)
672 {
673 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
674 struct attribute *a;
675 int i;
676
677 if (p->gid_group.attrs) {
678 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
679 kfree(a);
680
681 kfree(p->gid_group.attrs);
682 }
683
684 if (p->pkey_group.attrs) {
685 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
686 kfree(a);
687
688 kfree(p->pkey_group.attrs);
689 }
690
691 kfree(p);
692 }
693
694 static void ib_port_gid_attr_release(struct kobject *kobj)
695 {
696 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
697 kobj);
698 struct attribute *a;
699 int i;
700
701 if (g->ndev.attrs) {
702 for (i = 0; (a = g->ndev.attrs[i]); ++i)
703 kfree(a);
704
705 kfree(g->ndev.attrs);
706 }
707
708 if (g->type.attrs) {
709 for (i = 0; (a = g->type.attrs[i]); ++i)
710 kfree(a);
711
712 kfree(g->type.attrs);
713 }
714
715 kfree(g);
716 }
717
718 static struct kobj_type port_type = {
719 .release = ib_port_release,
720 .sysfs_ops = &port_sysfs_ops,
721 .default_attrs = port_default_attrs
722 };
723
724 static struct kobj_type gid_attr_type = {
725 .sysfs_ops = &gid_attr_sysfs_ops,
726 .release = ib_port_gid_attr_release
727 };
728
729 static struct attribute **
730 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
731 struct port_attribute *, char *buf),
732 int len)
733 {
734 struct attribute **tab_attr;
735 struct port_table_attribute *element;
736 int i;
737
738 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
739 if (!tab_attr)
740 return NULL;
741
742 for (i = 0; i < len; i++) {
743 element = kzalloc(sizeof(struct port_table_attribute),
744 GFP_KERNEL);
745 if (!element)
746 goto err;
747
748 if (snprintf(element->name, sizeof(element->name),
749 "%d", i) >= sizeof(element->name)) {
750 kfree(element);
751 goto err;
752 }
753
754 element->attr.attr.name = element->name;
755 element->attr.attr.mode = S_IRUGO;
756 element->attr.show = show;
757 element->index = i;
758 sysfs_attr_init(&element->attr.attr);
759
760 tab_attr[i] = &element->attr.attr;
761 }
762
763 return tab_attr;
764
765 err:
766 while (--i >= 0)
767 kfree(tab_attr[i]);
768 kfree(tab_attr);
769 return NULL;
770 }
771
772 /*
773 * Figure out which counter table to use depending on
774 * the device capabilities.
775 */
776 static struct attribute_group *get_counter_table(struct ib_device *dev,
777 int port_num)
778 {
779 struct ib_class_port_info cpi;
780
781 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
782 &cpi, 40, sizeof(cpi)) >= 0) {
783 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
784 /* We have extended counters */
785 return &pma_group_ext;
786
787 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
788 /* But not the IETF ones */
789 return &pma_group_noietf;
790 }
791
792 /* Fall back to normal counters */
793 return &pma_group;
794 }
795
796 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
797 u8 port_num, int index)
798 {
799 int ret;
800
801 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
802 return 0;
803 ret = dev->ops.get_hw_stats(dev, stats, port_num, index);
804 if (ret < 0)
805 return ret;
806 if (ret == stats->num_counters)
807 stats->timestamp = jiffies;
808
809 return 0;
810 }
811
812 static ssize_t print_hw_stat(struct ib_device *dev, int port_num,
813 struct rdma_hw_stats *stats, int index, char *buf)
814 {
815 u64 v = rdma_counter_get_hwstat_value(dev, port_num, index);
816
817 return sprintf(buf, "%llu\n", stats->value[index] + v);
818 }
819
820 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
821 char *buf)
822 {
823 struct ib_device *dev;
824 struct ib_port *port;
825 struct hw_stats_attribute *hsa;
826 struct rdma_hw_stats *stats;
827 int ret;
828
829 hsa = container_of(attr, struct hw_stats_attribute, attr);
830 if (!hsa->port_num) {
831 dev = container_of((struct device *)kobj,
832 struct ib_device, dev);
833 stats = dev->hw_stats;
834 } else {
835 port = container_of(kobj, struct ib_port, kobj);
836 dev = port->ibdev;
837 stats = port->hw_stats;
838 }
839 mutex_lock(&stats->lock);
840 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
841 if (ret)
842 goto unlock;
843 ret = print_hw_stat(dev, hsa->port_num, stats, hsa->index, buf);
844 unlock:
845 mutex_unlock(&stats->lock);
846
847 return ret;
848 }
849
850 static ssize_t show_stats_lifespan(struct kobject *kobj,
851 struct attribute *attr,
852 char *buf)
853 {
854 struct hw_stats_attribute *hsa;
855 struct rdma_hw_stats *stats;
856 int msecs;
857
858 hsa = container_of(attr, struct hw_stats_attribute, attr);
859 if (!hsa->port_num) {
860 struct ib_device *dev = container_of((struct device *)kobj,
861 struct ib_device, dev);
862
863 stats = dev->hw_stats;
864 } else {
865 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
866
867 stats = p->hw_stats;
868 }
869
870 mutex_lock(&stats->lock);
871 msecs = jiffies_to_msecs(stats->lifespan);
872 mutex_unlock(&stats->lock);
873
874 return sprintf(buf, "%d\n", msecs);
875 }
876
877 static ssize_t set_stats_lifespan(struct kobject *kobj,
878 struct attribute *attr,
879 const char *buf, size_t count)
880 {
881 struct hw_stats_attribute *hsa;
882 struct rdma_hw_stats *stats;
883 int msecs;
884 int jiffies;
885 int ret;
886
887 ret = kstrtoint(buf, 10, &msecs);
888 if (ret)
889 return ret;
890 if (msecs < 0 || msecs > 10000)
891 return -EINVAL;
892 jiffies = msecs_to_jiffies(msecs);
893 hsa = container_of(attr, struct hw_stats_attribute, attr);
894 if (!hsa->port_num) {
895 struct ib_device *dev = container_of((struct device *)kobj,
896 struct ib_device, dev);
897
898 stats = dev->hw_stats;
899 } else {
900 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
901
902 stats = p->hw_stats;
903 }
904
905 mutex_lock(&stats->lock);
906 stats->lifespan = jiffies;
907 mutex_unlock(&stats->lock);
908
909 return count;
910 }
911
912 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
913 {
914 struct attribute **attr;
915
916 sysfs_remove_group(kobj, attr_group);
917
918 for (attr = attr_group->attrs; *attr; attr++)
919 kfree(*attr);
920 kfree(attr_group);
921 }
922
923 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
924 {
925 struct hw_stats_attribute *hsa;
926
927 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
928 if (!hsa)
929 return NULL;
930
931 hsa->attr.name = (char *)name;
932 hsa->attr.mode = S_IRUGO;
933 hsa->show = show_hw_stats;
934 hsa->store = NULL;
935 hsa->index = index;
936 hsa->port_num = port_num;
937
938 return &hsa->attr;
939 }
940
941 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
942 {
943 struct hw_stats_attribute *hsa;
944
945 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
946 if (!hsa)
947 return NULL;
948
949 hsa->attr.name = name;
950 hsa->attr.mode = S_IWUSR | S_IRUGO;
951 hsa->show = show_stats_lifespan;
952 hsa->store = set_stats_lifespan;
953 hsa->index = 0;
954 hsa->port_num = port_num;
955
956 return &hsa->attr;
957 }
958
959 static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
960 u8 port_num)
961 {
962 struct attribute_group *hsag;
963 struct rdma_hw_stats *stats;
964 int i, ret;
965
966 stats = device->ops.alloc_hw_stats(device, port_num);
967
968 if (!stats)
969 return;
970
971 if (!stats->names || stats->num_counters <= 0)
972 goto err_free_stats;
973
974 /*
975 * Two extra attribue elements here, one for the lifespan entry and
976 * one to NULL terminate the list for the sysfs core code
977 */
978 hsag = kzalloc(sizeof(*hsag) +
979 sizeof(void *) * (stats->num_counters + 2),
980 GFP_KERNEL);
981 if (!hsag)
982 goto err_free_stats;
983
984 ret = device->ops.get_hw_stats(device, stats, port_num,
985 stats->num_counters);
986 if (ret != stats->num_counters)
987 goto err_free_hsag;
988
989 stats->timestamp = jiffies;
990
991 hsag->name = "hw_counters";
992 hsag->attrs = (void *)hsag + sizeof(*hsag);
993
994 for (i = 0; i < stats->num_counters; i++) {
995 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
996 if (!hsag->attrs[i])
997 goto err;
998 sysfs_attr_init(hsag->attrs[i]);
999 }
1000
1001 mutex_init(&stats->lock);
1002 /* treat an error here as non-fatal */
1003 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
1004 if (hsag->attrs[i])
1005 sysfs_attr_init(hsag->attrs[i]);
1006
1007 if (port) {
1008 struct kobject *kobj = &port->kobj;
1009 ret = sysfs_create_group(kobj, hsag);
1010 if (ret)
1011 goto err;
1012 port->hw_stats_ag = hsag;
1013 port->hw_stats = stats;
1014 if (device->port_data)
1015 device->port_data[port_num].hw_stats = stats;
1016 } else {
1017 struct kobject *kobj = &device->dev.kobj;
1018 ret = sysfs_create_group(kobj, hsag);
1019 if (ret)
1020 goto err;
1021 device->hw_stats_ag = hsag;
1022 device->hw_stats = stats;
1023 }
1024
1025 return;
1026
1027 err:
1028 for (; i >= 0; i--)
1029 kfree(hsag->attrs[i]);
1030 err_free_hsag:
1031 kfree(hsag);
1032 err_free_stats:
1033 kfree(stats);
1034 return;
1035 }
1036
1037 static int add_port(struct ib_core_device *coredev, int port_num)
1038 {
1039 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1040 bool is_full_dev = &device->coredev == coredev;
1041 struct ib_port *p;
1042 struct ib_port_attr attr;
1043 int i;
1044 int ret;
1045
1046 ret = ib_query_port(device, port_num, &attr);
1047 if (ret)
1048 return ret;
1049
1050 p = kzalloc(sizeof *p, GFP_KERNEL);
1051 if (!p)
1052 return -ENOMEM;
1053
1054 p->ibdev = device;
1055 p->port_num = port_num;
1056
1057 ret = kobject_init_and_add(&p->kobj, &port_type,
1058 coredev->ports_kobj,
1059 "%d", port_num);
1060 if (ret) {
1061 kfree(p);
1062 return ret;
1063 }
1064
1065 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
1066 if (!p->gid_attr_group) {
1067 ret = -ENOMEM;
1068 goto err_put;
1069 }
1070
1071 p->gid_attr_group->port = p;
1072 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1073 &p->kobj, "gid_attrs");
1074 if (ret) {
1075 kfree(p->gid_attr_group);
1076 goto err_put;
1077 }
1078
1079 if (device->ops.process_mad && is_full_dev) {
1080 p->pma_table = get_counter_table(device, port_num);
1081 ret = sysfs_create_group(&p->kobj, p->pma_table);
1082 if (ret)
1083 goto err_put_gid_attrs;
1084 }
1085
1086 p->gid_group.name = "gids";
1087 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1088 if (!p->gid_group.attrs) {
1089 ret = -ENOMEM;
1090 goto err_remove_pma;
1091 }
1092
1093 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1094 if (ret)
1095 goto err_free_gid;
1096
1097 p->gid_attr_group->ndev.name = "ndevs";
1098 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1099 attr.gid_tbl_len);
1100 if (!p->gid_attr_group->ndev.attrs) {
1101 ret = -ENOMEM;
1102 goto err_remove_gid;
1103 }
1104
1105 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1106 &p->gid_attr_group->ndev);
1107 if (ret)
1108 goto err_free_gid_ndev;
1109
1110 p->gid_attr_group->type.name = "types";
1111 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1112 attr.gid_tbl_len);
1113 if (!p->gid_attr_group->type.attrs) {
1114 ret = -ENOMEM;
1115 goto err_remove_gid_ndev;
1116 }
1117
1118 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1119 &p->gid_attr_group->type);
1120 if (ret)
1121 goto err_free_gid_type;
1122
1123 p->pkey_group.name = "pkeys";
1124 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
1125 attr.pkey_tbl_len);
1126 if (!p->pkey_group.attrs) {
1127 ret = -ENOMEM;
1128 goto err_remove_gid_type;
1129 }
1130
1131 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
1132 if (ret)
1133 goto err_free_pkey;
1134
1135 if (device->ops.init_port && is_full_dev) {
1136 ret = device->ops.init_port(device, port_num, &p->kobj);
1137 if (ret)
1138 goto err_remove_pkey;
1139 }
1140
1141 /*
1142 * If port == 0, it means hw_counters are per device and not per
1143 * port, so holder should be device. Therefore skip per port conunter
1144 * initialization.
1145 */
1146 if (device->ops.alloc_hw_stats && port_num && is_full_dev)
1147 setup_hw_stats(device, p, port_num);
1148
1149 list_add_tail(&p->kobj.entry, &coredev->port_list);
1150
1151 kobject_uevent(&p->kobj, KOBJ_ADD);
1152 return 0;
1153
1154 err_remove_pkey:
1155 sysfs_remove_group(&p->kobj, &p->pkey_group);
1156
1157 err_free_pkey:
1158 for (i = 0; i < attr.pkey_tbl_len; ++i)
1159 kfree(p->pkey_group.attrs[i]);
1160
1161 kfree(p->pkey_group.attrs);
1162 p->pkey_group.attrs = NULL;
1163
1164 err_remove_gid_type:
1165 sysfs_remove_group(&p->gid_attr_group->kobj,
1166 &p->gid_attr_group->type);
1167
1168 err_free_gid_type:
1169 for (i = 0; i < attr.gid_tbl_len; ++i)
1170 kfree(p->gid_attr_group->type.attrs[i]);
1171
1172 kfree(p->gid_attr_group->type.attrs);
1173 p->gid_attr_group->type.attrs = NULL;
1174
1175 err_remove_gid_ndev:
1176 sysfs_remove_group(&p->gid_attr_group->kobj,
1177 &p->gid_attr_group->ndev);
1178
1179 err_free_gid_ndev:
1180 for (i = 0; i < attr.gid_tbl_len; ++i)
1181 kfree(p->gid_attr_group->ndev.attrs[i]);
1182
1183 kfree(p->gid_attr_group->ndev.attrs);
1184 p->gid_attr_group->ndev.attrs = NULL;
1185
1186 err_remove_gid:
1187 sysfs_remove_group(&p->kobj, &p->gid_group);
1188
1189 err_free_gid:
1190 for (i = 0; i < attr.gid_tbl_len; ++i)
1191 kfree(p->gid_group.attrs[i]);
1192
1193 kfree(p->gid_group.attrs);
1194 p->gid_group.attrs = NULL;
1195
1196 err_remove_pma:
1197 if (p->pma_table)
1198 sysfs_remove_group(&p->kobj, p->pma_table);
1199
1200 err_put_gid_attrs:
1201 kobject_put(&p->gid_attr_group->kobj);
1202
1203 err_put:
1204 kobject_put(&p->kobj);
1205 return ret;
1206 }
1207
1208 static ssize_t node_type_show(struct device *device,
1209 struct device_attribute *attr, char *buf)
1210 {
1211 struct ib_device *dev = rdma_device_to_ibdev(device);
1212
1213 switch (dev->node_type) {
1214 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
1215 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
1216 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
1217 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1218 case RDMA_NODE_UNSPECIFIED: return sprintf(buf, "%d: unspecified\n", dev->node_type);
1219 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1220 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1221 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1222 }
1223 }
1224 static DEVICE_ATTR_RO(node_type);
1225
1226 static ssize_t sys_image_guid_show(struct device *device,
1227 struct device_attribute *dev_attr, char *buf)
1228 {
1229 struct ib_device *dev = rdma_device_to_ibdev(device);
1230
1231 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1232 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1233 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1234 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1235 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1236 }
1237 static DEVICE_ATTR_RO(sys_image_guid);
1238
1239 static ssize_t node_guid_show(struct device *device,
1240 struct device_attribute *attr, char *buf)
1241 {
1242 struct ib_device *dev = rdma_device_to_ibdev(device);
1243
1244 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1245 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1246 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1247 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1248 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1249 }
1250 static DEVICE_ATTR_RO(node_guid);
1251
1252 static ssize_t node_desc_show(struct device *device,
1253 struct device_attribute *attr, char *buf)
1254 {
1255 struct ib_device *dev = rdma_device_to_ibdev(device);
1256
1257 return sprintf(buf, "%.64s\n", dev->node_desc);
1258 }
1259
1260 static ssize_t node_desc_store(struct device *device,
1261 struct device_attribute *attr,
1262 const char *buf, size_t count)
1263 {
1264 struct ib_device *dev = rdma_device_to_ibdev(device);
1265 struct ib_device_modify desc = {};
1266 int ret;
1267
1268 if (!dev->ops.modify_device)
1269 return -EOPNOTSUPP;
1270
1271 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1272 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1273 if (ret)
1274 return ret;
1275
1276 return count;
1277 }
1278 static DEVICE_ATTR_RW(node_desc);
1279
1280 static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr,
1281 char *buf)
1282 {
1283 struct ib_device *dev = rdma_device_to_ibdev(device);
1284
1285 ib_get_device_fw_str(dev, buf);
1286 strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX);
1287 return strlen(buf);
1288 }
1289 static DEVICE_ATTR_RO(fw_ver);
1290
1291 static struct attribute *ib_dev_attrs[] = {
1292 &dev_attr_node_type.attr,
1293 &dev_attr_node_guid.attr,
1294 &dev_attr_sys_image_guid.attr,
1295 &dev_attr_fw_ver.attr,
1296 &dev_attr_node_desc.attr,
1297 NULL,
1298 };
1299
1300 const struct attribute_group ib_dev_attr_group = {
1301 .attrs = ib_dev_attrs,
1302 };
1303
1304 void ib_free_port_attrs(struct ib_core_device *coredev)
1305 {
1306 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1307 bool is_full_dev = &device->coredev == coredev;
1308 struct kobject *p, *t;
1309
1310 list_for_each_entry_safe(p, t, &coredev->port_list, entry) {
1311 struct ib_port *port = container_of(p, struct ib_port, kobj);
1312
1313 list_del(&p->entry);
1314 if (port->hw_stats_ag)
1315 free_hsag(&port->kobj, port->hw_stats_ag);
1316 kfree(port->hw_stats);
1317 if (device->port_data && is_full_dev)
1318 device->port_data[port->port_num].hw_stats = NULL;
1319
1320 if (port->pma_table)
1321 sysfs_remove_group(p, port->pma_table);
1322 sysfs_remove_group(p, &port->pkey_group);
1323 sysfs_remove_group(p, &port->gid_group);
1324 sysfs_remove_group(&port->gid_attr_group->kobj,
1325 &port->gid_attr_group->ndev);
1326 sysfs_remove_group(&port->gid_attr_group->kobj,
1327 &port->gid_attr_group->type);
1328 kobject_put(&port->gid_attr_group->kobj);
1329 kobject_put(p);
1330 }
1331
1332 kobject_put(coredev->ports_kobj);
1333 }
1334
1335 int ib_setup_port_attrs(struct ib_core_device *coredev)
1336 {
1337 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1338 unsigned int port;
1339 int ret;
1340
1341 coredev->ports_kobj = kobject_create_and_add("ports",
1342 &coredev->dev.kobj);
1343 if (!coredev->ports_kobj)
1344 return -ENOMEM;
1345
1346 rdma_for_each_port (device, port) {
1347 ret = add_port(coredev, port);
1348 if (ret)
1349 goto err_put;
1350 }
1351
1352 return 0;
1353
1354 err_put:
1355 ib_free_port_attrs(coredev);
1356 return ret;
1357 }
1358
1359 int ib_device_register_sysfs(struct ib_device *device)
1360 {
1361 int ret;
1362
1363 ret = ib_setup_port_attrs(&device->coredev);
1364 if (ret)
1365 return ret;
1366
1367 if (device->ops.alloc_hw_stats)
1368 setup_hw_stats(device, NULL, 0);
1369
1370 return 0;
1371 }
1372
1373 void ib_device_unregister_sysfs(struct ib_device *device)
1374 {
1375 if (device->hw_stats_ag)
1376 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1377 kfree(device->hw_stats);
1378
1379 ib_free_port_attrs(&device->coredev);
1380 }
1381
1382 /**
1383 * ib_port_register_module_stat - add module counters under relevant port
1384 * of IB device.
1385 *
1386 * @device: IB device to add counters
1387 * @port_num: valid port number
1388 * @kobj: pointer to the kobject to initialize
1389 * @ktype: pointer to the ktype for this kobject.
1390 * @name: the name of the kobject
1391 */
1392 int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
1393 struct kobject *kobj, struct kobj_type *ktype,
1394 const char *name)
1395 {
1396 struct kobject *p, *t;
1397 int ret;
1398
1399 list_for_each_entry_safe(p, t, &device->coredev.port_list, entry) {
1400 struct ib_port *port = container_of(p, struct ib_port, kobj);
1401
1402 if (port->port_num != port_num)
1403 continue;
1404
1405 ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s",
1406 name);
1407 if (ret)
1408 return ret;
1409 }
1410
1411 return 0;
1412 }
1413 EXPORT_SYMBOL(ib_port_register_module_stat);
1414
1415 /**
1416 * ib_port_unregister_module_stat - release module counters
1417 * @kobj: pointer to the kobject to release
1418 */
1419 void ib_port_unregister_module_stat(struct kobject *kobj)
1420 {
1421 kobject_put(kobj);
1422 }
1423 EXPORT_SYMBOL(ib_port_unregister_module_stat);
Linux with added FPC-III support