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io_uring: ensure finish_wait() is always called in __io_uring_task_cancel()
[linux/fpc-iii.git] / drivers / infiniband / core / sysfs.c
blobb8abb30f80df5d0806fe8ca6f8deba3d99ae8a76
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 const 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 sysfs_emit(buf, "%d: %s\n", attr.state,
169 attr.state >= 0 &&
170 attr.state < ARRAY_SIZE(state_name) ?
171 state_name[attr.state] :
172 "UNKNOWN");
173 }
174
175 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
176 char *buf)
177 {
178 struct ib_port_attr attr;
179 ssize_t ret;
180
181 ret = ib_query_port(p->ibdev, p->port_num, &attr);
182 if (ret)
183 return ret;
184
185 return sysfs_emit(buf, "0x%x\n", attr.lid);
186 }
187
188 static ssize_t lid_mask_count_show(struct ib_port *p,
189 struct port_attribute *unused,
190 char *buf)
191 {
192 struct ib_port_attr attr;
193 ssize_t ret;
194
195 ret = ib_query_port(p->ibdev, p->port_num, &attr);
196 if (ret)
197 return ret;
198
199 return sysfs_emit(buf, "%d\n", attr.lmc);
200 }
201
202 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
203 char *buf)
204 {
205 struct ib_port_attr attr;
206 ssize_t ret;
207
208 ret = ib_query_port(p->ibdev, p->port_num, &attr);
209 if (ret)
210 return ret;
211
212 return sysfs_emit(buf, "0x%x\n", attr.sm_lid);
213 }
214
215 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
216 char *buf)
217 {
218 struct ib_port_attr attr;
219 ssize_t ret;
220
221 ret = ib_query_port(p->ibdev, p->port_num, &attr);
222 if (ret)
223 return ret;
224
225 return sysfs_emit(buf, "%d\n", attr.sm_sl);
226 }
227
228 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
229 char *buf)
230 {
231 struct ib_port_attr attr;
232 ssize_t ret;
233
234 ret = ib_query_port(p->ibdev, p->port_num, &attr);
235 if (ret)
236 return ret;
237
238 return sysfs_emit(buf, "0x%08x\n", attr.port_cap_flags);
239 }
240
241 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
242 char *buf)
243 {
244 struct ib_port_attr attr;
245 char *speed = "";
246 int rate; /* in deci-Gb/sec */
247 ssize_t ret;
248
249 ret = ib_query_port(p->ibdev, p->port_num, &attr);
250 if (ret)
251 return ret;
252
253 switch (attr.active_speed) {
254 case IB_SPEED_DDR:
255 speed = " DDR";
256 rate = 50;
257 break;
258 case IB_SPEED_QDR:
259 speed = " QDR";
260 rate = 100;
261 break;
262 case IB_SPEED_FDR10:
263 speed = " FDR10";
264 rate = 100;
265 break;
266 case IB_SPEED_FDR:
267 speed = " FDR";
268 rate = 140;
269 break;
270 case IB_SPEED_EDR:
271 speed = " EDR";
272 rate = 250;
273 break;
274 case IB_SPEED_HDR:
275 speed = " HDR";
276 rate = 500;
277 break;
278 case IB_SPEED_NDR:
279 speed = " NDR";
280 rate = 1000;
281 break;
282 case IB_SPEED_SDR:
283 default: /* default to SDR for invalid rates */
284 speed = " SDR";
285 rate = 25;
286 break;
287 }
288
289 rate *= ib_width_enum_to_int(attr.active_width);
290 if (rate < 0)
291 return -EINVAL;
292
293 return sysfs_emit(buf, "%d%s Gb/sec (%dX%s)\n", rate / 10,
294 rate % 10 ? ".5" : "",
295 ib_width_enum_to_int(attr.active_width), speed);
296 }
297
298 static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
299 {
300 static const char * phys_state_str[] = {
301 "<unknown>",
302 "Sleep",
303 "Polling",
304 "Disabled",
305 "PortConfigurationTraining",
306 "LinkUp",
307 "LinkErrorRecovery",
308 "Phy Test",
309 };
310
311 if (phys_state < ARRAY_SIZE(phys_state_str))
312 return phys_state_str[phys_state];
313 return "<unknown>";
314 }
315
316 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
317 char *buf)
318 {
319 struct ib_port_attr attr;
320
321 ssize_t ret;
322
323 ret = ib_query_port(p->ibdev, p->port_num, &attr);
324 if (ret)
325 return ret;
326
327 return sysfs_emit(buf, "%d: %s\n", attr.phys_state,
328 phys_state_to_str(attr.phys_state));
329 }
330
331 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
332 char *buf)
333 {
334 const char *output;
335
336 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
337 case IB_LINK_LAYER_INFINIBAND:
338 output = "InfiniBand";
339 break;
340 case IB_LINK_LAYER_ETHERNET:
341 output = "Ethernet";
342 break;
343 default:
344 output = "Unknown";
345 break;
346 }
347
348 return sysfs_emit(buf, "%s\n", output);
349 }
350
351 static PORT_ATTR_RO(state);
352 static PORT_ATTR_RO(lid);
353 static PORT_ATTR_RO(lid_mask_count);
354 static PORT_ATTR_RO(sm_lid);
355 static PORT_ATTR_RO(sm_sl);
356 static PORT_ATTR_RO(cap_mask);
357 static PORT_ATTR_RO(rate);
358 static PORT_ATTR_RO(phys_state);
359 static PORT_ATTR_RO(link_layer);
360
361 static struct attribute *port_default_attrs[] = {
362 &port_attr_state.attr,
363 &port_attr_lid.attr,
364 &port_attr_lid_mask_count.attr,
365 &port_attr_sm_lid.attr,
366 &port_attr_sm_sl.attr,
367 &port_attr_cap_mask.attr,
368 &port_attr_rate.attr,
369 &port_attr_phys_state.attr,
370 &port_attr_link_layer.attr,
371 NULL
372 };
373
374 static ssize_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf)
375 {
376 struct net_device *ndev;
377 int ret = -EINVAL;
378
379 rcu_read_lock();
380 ndev = rcu_dereference(gid_attr->ndev);
381 if (ndev)
382 ret = sysfs_emit(buf, "%s\n", ndev->name);
383 rcu_read_unlock();
384 return ret;
385 }
386
387 static ssize_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
388 {
389 return sysfs_emit(buf, "%s\n",
390 ib_cache_gid_type_str(gid_attr->gid_type));
391 }
392
393 static ssize_t _show_port_gid_attr(
394 struct ib_port *p, struct port_attribute *attr, char *buf,
395 ssize_t (*print)(const struct ib_gid_attr *gid_attr, char *buf))
396 {
397 struct port_table_attribute *tab_attr =
398 container_of(attr, struct port_table_attribute, attr);
399 const struct ib_gid_attr *gid_attr;
400 ssize_t ret;
401
402 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
403 if (IS_ERR(gid_attr))
404 /* -EINVAL is returned for user space compatibility reasons. */
405 return -EINVAL;
406
407 ret = print(gid_attr, buf);
408 rdma_put_gid_attr(gid_attr);
409 return ret;
410 }
411
412 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
413 char *buf)
414 {
415 struct port_table_attribute *tab_attr =
416 container_of(attr, struct port_table_attribute, attr);
417 const struct ib_gid_attr *gid_attr;
418 int len;
419
420 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
421 if (IS_ERR(gid_attr)) {
422 const union ib_gid zgid = {};
423
424 /* If reading GID fails, it is likely due to GID entry being
425 * empty (invalid) or reserved GID in the table. User space
426 * expects to read GID table entries as long as it given index
427 * is within GID table size. Administrative/debugging tool
428 * fails to query rest of the GID entries if it hits error
429 * while querying a GID of the given index. To avoid user
430 * space throwing such error on fail to read gid, return zero
431 * GID as before. This maintains backward compatibility.
432 */
433 return sysfs_emit(buf, "%pI6\n", zgid.raw);
434 }
435
436 len = sysfs_emit(buf, "%pI6\n", gid_attr->gid.raw);
437 rdma_put_gid_attr(gid_attr);
438 return len;
439 }
440
441 static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
442 struct port_attribute *attr, char *buf)
443 {
444 return _show_port_gid_attr(p, attr, buf, print_ndev);
445 }
446
447 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
448 struct port_attribute *attr,
449 char *buf)
450 {
451 return _show_port_gid_attr(p, attr, buf, print_gid_type);
452 }
453
454 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
455 char *buf)
456 {
457 struct port_table_attribute *tab_attr =
458 container_of(attr, struct port_table_attribute, attr);
459 u16 pkey;
460 int ret;
461
462 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
463 if (ret)
464 return ret;
465
466 return sysfs_emit(buf, "0x%04x\n", pkey);
467 }
468
469 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
470 struct port_table_attribute port_pma_attr_##_name = { \
471 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
472 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
473 .attr_id = IB_PMA_PORT_COUNTERS , \
474 }
475
476 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
477 struct port_table_attribute port_pma_attr_ext_##_name = { \
478 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
479 .index = (_offset) | ((_width) << 16), \
480 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
481 }
482
483 /*
484 * Get a Perfmgmt MAD block of data.
485 * Returns error code or the number of bytes retrieved.
486 */
487 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
488 void *data, int offset, size_t size)
489 {
490 struct ib_mad *in_mad;
491 struct ib_mad *out_mad;
492 size_t mad_size = sizeof(*out_mad);
493 u16 out_mad_pkey_index = 0;
494 ssize_t ret;
495
496 if (!dev->ops.process_mad)
497 return -ENOSYS;
498
499 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
500 out_mad = kzalloc(sizeof(*out_mad), GFP_KERNEL);
501 if (!in_mad || !out_mad) {
502 ret = -ENOMEM;
503 goto out;
504 }
505
506 in_mad->mad_hdr.base_version = 1;
507 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
508 in_mad->mad_hdr.class_version = 1;
509 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
510 in_mad->mad_hdr.attr_id = attr;
511
512 if (attr != IB_PMA_CLASS_PORT_INFO)
513 in_mad->data[41] = port_num; /* PortSelect field */
514
515 if ((dev->ops.process_mad(dev, IB_MAD_IGNORE_MKEY, port_num, NULL, NULL,
516 in_mad, out_mad, &mad_size,
517 &out_mad_pkey_index) &
518 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
519 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
520 ret = -EINVAL;
521 goto out;
522 }
523 memcpy(data, out_mad->data + offset, size);
524 ret = size;
525 out:
526 kfree(in_mad);
527 kfree(out_mad);
528 return ret;
529 }
530
531 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
532 char *buf)
533 {
534 struct port_table_attribute *tab_attr =
535 container_of(attr, struct port_table_attribute, attr);
536 int offset = tab_attr->index & 0xffff;
537 int width = (tab_attr->index >> 16) & 0xff;
538 int ret;
539 u8 data[8];
540 int len;
541
542 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
543 40 + offset / 8, sizeof(data));
544 if (ret < 0)
545 return ret;
546
547 switch (width) {
548 case 4:
549 len = sysfs_emit(buf, "%u\n",
550 (*data >> (4 - (offset % 8))) & 0xf);
551 break;
552 case 8:
553 len = sysfs_emit(buf, "%u\n", *data);
554 break;
555 case 16:
556 len = sysfs_emit(buf, "%u\n", be16_to_cpup((__be16 *)data));
557 break;
558 case 32:
559 len = sysfs_emit(buf, "%u\n", be32_to_cpup((__be32 *)data));
560 break;
561 case 64:
562 len = sysfs_emit(buf, "%llu\n", be64_to_cpup((__be64 *)data));
563 break;
564 default:
565 len = 0;
566 break;
567 }
568
569 return len;
570 }
571
572 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
573 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
574 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
575 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
576 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
577 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
578 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
579 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
580 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
581 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
582 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
583 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
584 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
585 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
586 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
587 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
588 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
589
590 /*
591 * Counters added by extended set
592 */
593 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
594 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
595 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
596 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
597 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
598 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
599 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
600 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
601
602 static struct attribute *pma_attrs[] = {
603 &port_pma_attr_symbol_error.attr.attr,
604 &port_pma_attr_link_error_recovery.attr.attr,
605 &port_pma_attr_link_downed.attr.attr,
606 &port_pma_attr_port_rcv_errors.attr.attr,
607 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
608 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
609 &port_pma_attr_port_xmit_discards.attr.attr,
610 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
611 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
612 &port_pma_attr_local_link_integrity_errors.attr.attr,
613 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
614 &port_pma_attr_VL15_dropped.attr.attr,
615 &port_pma_attr_port_xmit_data.attr.attr,
616 &port_pma_attr_port_rcv_data.attr.attr,
617 &port_pma_attr_port_xmit_packets.attr.attr,
618 &port_pma_attr_port_rcv_packets.attr.attr,
619 &port_pma_attr_port_xmit_wait.attr.attr,
620 NULL
621 };
622
623 static struct attribute *pma_attrs_ext[] = {
624 &port_pma_attr_symbol_error.attr.attr,
625 &port_pma_attr_link_error_recovery.attr.attr,
626 &port_pma_attr_link_downed.attr.attr,
627 &port_pma_attr_port_rcv_errors.attr.attr,
628 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
629 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
630 &port_pma_attr_port_xmit_discards.attr.attr,
631 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
632 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
633 &port_pma_attr_local_link_integrity_errors.attr.attr,
634 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
635 &port_pma_attr_VL15_dropped.attr.attr,
636 &port_pma_attr_ext_port_xmit_data.attr.attr,
637 &port_pma_attr_ext_port_rcv_data.attr.attr,
638 &port_pma_attr_ext_port_xmit_packets.attr.attr,
639 &port_pma_attr_port_xmit_wait.attr.attr,
640 &port_pma_attr_ext_port_rcv_packets.attr.attr,
641 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
642 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
643 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
644 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
645 NULL
646 };
647
648 static struct attribute *pma_attrs_noietf[] = {
649 &port_pma_attr_symbol_error.attr.attr,
650 &port_pma_attr_link_error_recovery.attr.attr,
651 &port_pma_attr_link_downed.attr.attr,
652 &port_pma_attr_port_rcv_errors.attr.attr,
653 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
654 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
655 &port_pma_attr_port_xmit_discards.attr.attr,
656 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
657 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
658 &port_pma_attr_local_link_integrity_errors.attr.attr,
659 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
660 &port_pma_attr_VL15_dropped.attr.attr,
661 &port_pma_attr_ext_port_xmit_data.attr.attr,
662 &port_pma_attr_ext_port_rcv_data.attr.attr,
663 &port_pma_attr_ext_port_xmit_packets.attr.attr,
664 &port_pma_attr_ext_port_rcv_packets.attr.attr,
665 &port_pma_attr_port_xmit_wait.attr.attr,
666 NULL
667 };
668
669 static const struct attribute_group pma_group = {
670 .name = "counters",
671 .attrs = pma_attrs
672 };
673
674 static const struct attribute_group pma_group_ext = {
675 .name = "counters",
676 .attrs = pma_attrs_ext
677 };
678
679 static const struct attribute_group pma_group_noietf = {
680 .name = "counters",
681 .attrs = pma_attrs_noietf
682 };
683
684 static void ib_port_release(struct kobject *kobj)
685 {
686 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
687 struct attribute *a;
688 int i;
689
690 if (p->gid_group.attrs) {
691 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
692 kfree(a);
693
694 kfree(p->gid_group.attrs);
695 }
696
697 if (p->pkey_group) {
698 if (p->pkey_group->attrs) {
699 for (i = 0; (a = p->pkey_group->attrs[i]); ++i)
700 kfree(a);
701
702 kfree(p->pkey_group->attrs);
703 }
704
705 kfree(p->pkey_group);
706 p->pkey_group = NULL;
707 }
708
709 kfree(p);
710 }
711
712 static void ib_port_gid_attr_release(struct kobject *kobj)
713 {
714 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
715 kobj);
716 struct attribute *a;
717 int i;
718
719 if (g->ndev.attrs) {
720 for (i = 0; (a = g->ndev.attrs[i]); ++i)
721 kfree(a);
722
723 kfree(g->ndev.attrs);
724 }
725
726 if (g->type.attrs) {
727 for (i = 0; (a = g->type.attrs[i]); ++i)
728 kfree(a);
729
730 kfree(g->type.attrs);
731 }
732
733 kfree(g);
734 }
735
736 static struct kobj_type port_type = {
737 .release = ib_port_release,
738 .sysfs_ops = &port_sysfs_ops,
739 .default_attrs = port_default_attrs
740 };
741
742 static struct kobj_type gid_attr_type = {
743 .sysfs_ops = &gid_attr_sysfs_ops,
744 .release = ib_port_gid_attr_release
745 };
746
747 static struct attribute **
748 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
749 struct port_attribute *, char *buf),
750 int len)
751 {
752 struct attribute **tab_attr;
753 struct port_table_attribute *element;
754 int i;
755
756 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
757 if (!tab_attr)
758 return NULL;
759
760 for (i = 0; i < len; i++) {
761 element = kzalloc(sizeof(struct port_table_attribute),
762 GFP_KERNEL);
763 if (!element)
764 goto err;
765
766 if (snprintf(element->name, sizeof(element->name),
767 "%d", i) >= sizeof(element->name)) {
768 kfree(element);
769 goto err;
770 }
771
772 element->attr.attr.name = element->name;
773 element->attr.attr.mode = S_IRUGO;
774 element->attr.show = show;
775 element->index = i;
776 sysfs_attr_init(&element->attr.attr);
777
778 tab_attr[i] = &element->attr.attr;
779 }
780
781 return tab_attr;
782
783 err:
784 while (--i >= 0)
785 kfree(tab_attr[i]);
786 kfree(tab_attr);
787 return NULL;
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 &cpi, 40, 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 u8 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_num, index);
834
835 return sysfs_emit(buf, "%llu\n", stats->value[index] + v);
836 }
837
838 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
839 char *buf)
840 {
841 struct ib_device *dev;
842 struct ib_port *port;
843 struct hw_stats_attribute *hsa;
844 struct rdma_hw_stats *stats;
845 int ret;
846
847 hsa = container_of(attr, struct hw_stats_attribute, attr);
848 if (!hsa->port_num) {
849 dev = container_of((struct device *)kobj,
850 struct ib_device, dev);
851 stats = dev->hw_stats;
852 } else {
853 port = container_of(kobj, struct ib_port, kobj);
854 dev = port->ibdev;
855 stats = port->hw_stats;
856 }
857 mutex_lock(&stats->lock);
858 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
859 if (ret)
860 goto unlock;
861 ret = print_hw_stat(dev, hsa->port_num, stats, hsa->index, buf);
862 unlock:
863 mutex_unlock(&stats->lock);
864
865 return ret;
866 }
867
868 static ssize_t show_stats_lifespan(struct kobject *kobj,
869 struct attribute *attr,
870 char *buf)
871 {
872 struct hw_stats_attribute *hsa;
873 struct rdma_hw_stats *stats;
874 int msecs;
875
876 hsa = container_of(attr, struct hw_stats_attribute, attr);
877 if (!hsa->port_num) {
878 struct ib_device *dev = container_of((struct device *)kobj,
879 struct ib_device, dev);
880
881 stats = dev->hw_stats;
882 } else {
883 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
884
885 stats = p->hw_stats;
886 }
887
888 mutex_lock(&stats->lock);
889 msecs = jiffies_to_msecs(stats->lifespan);
890 mutex_unlock(&stats->lock);
891
892 return sysfs_emit(buf, "%d\n", msecs);
893 }
894
895 static ssize_t set_stats_lifespan(struct kobject *kobj,
896 struct attribute *attr,
897 const char *buf, size_t count)
898 {
899 struct hw_stats_attribute *hsa;
900 struct rdma_hw_stats *stats;
901 int msecs;
902 int jiffies;
903 int ret;
904
905 ret = kstrtoint(buf, 10, &msecs);
906 if (ret)
907 return ret;
908 if (msecs < 0 || msecs > 10000)
909 return -EINVAL;
910 jiffies = msecs_to_jiffies(msecs);
911 hsa = container_of(attr, struct hw_stats_attribute, attr);
912 if (!hsa->port_num) {
913 struct ib_device *dev = container_of((struct device *)kobj,
914 struct ib_device, dev);
915
916 stats = dev->hw_stats;
917 } else {
918 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
919
920 stats = p->hw_stats;
921 }
922
923 mutex_lock(&stats->lock);
924 stats->lifespan = jiffies;
925 mutex_unlock(&stats->lock);
926
927 return count;
928 }
929
930 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
931 {
932 struct attribute **attr;
933
934 sysfs_remove_group(kobj, attr_group);
935
936 for (attr = attr_group->attrs; *attr; attr++)
937 kfree(*attr);
938 kfree(attr_group);
939 }
940
941 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
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 = (char *)name;
950 hsa->attr.mode = S_IRUGO;
951 hsa->show = show_hw_stats;
952 hsa->store = NULL;
953 hsa->index = index;
954 hsa->port_num = port_num;
955
956 return &hsa->attr;
957 }
958
959 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
960 {
961 struct hw_stats_attribute *hsa;
962
963 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
964 if (!hsa)
965 return NULL;
966
967 hsa->attr.name = name;
968 hsa->attr.mode = S_IWUSR | S_IRUGO;
969 hsa->show = show_stats_lifespan;
970 hsa->store = set_stats_lifespan;
971 hsa->index = 0;
972 hsa->port_num = port_num;
973
974 return &hsa->attr;
975 }
976
977 static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
978 u8 port_num)
979 {
980 struct attribute_group *hsag;
981 struct rdma_hw_stats *stats;
982 int i, ret;
983
984 stats = device->ops.alloc_hw_stats(device, port_num);
985
986 if (!stats)
987 return;
988
989 if (!stats->names || stats->num_counters <= 0)
990 goto err_free_stats;
991
992 /*
993 * Two extra attribue elements here, one for the lifespan entry and
994 * one to NULL terminate the list for the sysfs core code
995 */
996 hsag = kzalloc(sizeof(*hsag) +
997 sizeof(void *) * (stats->num_counters + 2),
998 GFP_KERNEL);
999 if (!hsag)
1000 goto err_free_stats;
1001
1002 ret = device->ops.get_hw_stats(device, stats, port_num,
1003 stats->num_counters);
1004 if (ret != stats->num_counters)
1005 goto err_free_hsag;
1006
1007 stats->timestamp = jiffies;
1008
1009 hsag->name = "hw_counters";
1010 hsag->attrs = (void *)hsag + sizeof(*hsag);
1011
1012 for (i = 0; i < stats->num_counters; i++) {
1013 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
1014 if (!hsag->attrs[i])
1015 goto err;
1016 sysfs_attr_init(hsag->attrs[i]);
1017 }
1018
1019 mutex_init(&stats->lock);
1020 /* treat an error here as non-fatal */
1021 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
1022 if (hsag->attrs[i])
1023 sysfs_attr_init(hsag->attrs[i]);
1024
1025 if (port) {
1026 struct kobject *kobj = &port->kobj;
1027 ret = sysfs_create_group(kobj, hsag);
1028 if (ret)
1029 goto err;
1030 port->hw_stats_ag = hsag;
1031 port->hw_stats = stats;
1032 if (device->port_data)
1033 device->port_data[port_num].hw_stats = stats;
1034 } else {
1035 struct kobject *kobj = &device->dev.kobj;
1036 ret = sysfs_create_group(kobj, hsag);
1037 if (ret)
1038 goto err;
1039 device->hw_stats_ag = hsag;
1040 device->hw_stats = stats;
1041 }
1042
1043 return;
1044
1045 err:
1046 for (; i >= 0; i--)
1047 kfree(hsag->attrs[i]);
1048 err_free_hsag:
1049 kfree(hsag);
1050 err_free_stats:
1051 kfree(stats);
1052 return;
1053 }
1054
1055 static int add_port(struct ib_core_device *coredev, int port_num)
1056 {
1057 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1058 bool is_full_dev = &device->coredev == coredev;
1059 struct ib_port *p;
1060 struct ib_port_attr attr;
1061 int i;
1062 int ret;
1063
1064 ret = ib_query_port(device, port_num, &attr);
1065 if (ret)
1066 return ret;
1067
1068 p = kzalloc(sizeof *p, GFP_KERNEL);
1069 if (!p)
1070 return -ENOMEM;
1071
1072 p->ibdev = device;
1073 p->port_num = port_num;
1074
1075 ret = kobject_init_and_add(&p->kobj, &port_type,
1076 coredev->ports_kobj,
1077 "%d", port_num);
1078 if (ret) {
1079 goto err_put;
1080 }
1081
1082 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
1083 if (!p->gid_attr_group) {
1084 ret = -ENOMEM;
1085 goto err_put;
1086 }
1087
1088 p->gid_attr_group->port = p;
1089 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1090 &p->kobj, "gid_attrs");
1091 if (ret) {
1092 goto err_put_gid_attrs;
1093 }
1094
1095 if (device->ops.process_mad && is_full_dev) {
1096 p->pma_table = get_counter_table(device, port_num);
1097 ret = sysfs_create_group(&p->kobj, p->pma_table);
1098 if (ret)
1099 goto err_put_gid_attrs;
1100 }
1101
1102 p->gid_group.name = "gids";
1103 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1104 if (!p->gid_group.attrs) {
1105 ret = -ENOMEM;
1106 goto err_remove_pma;
1107 }
1108
1109 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1110 if (ret)
1111 goto err_free_gid;
1112
1113 p->gid_attr_group->ndev.name = "ndevs";
1114 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1115 attr.gid_tbl_len);
1116 if (!p->gid_attr_group->ndev.attrs) {
1117 ret = -ENOMEM;
1118 goto err_remove_gid;
1119 }
1120
1121 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1122 &p->gid_attr_group->ndev);
1123 if (ret)
1124 goto err_free_gid_ndev;
1125
1126 p->gid_attr_group->type.name = "types";
1127 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1128 attr.gid_tbl_len);
1129 if (!p->gid_attr_group->type.attrs) {
1130 ret = -ENOMEM;
1131 goto err_remove_gid_ndev;
1132 }
1133
1134 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1135 &p->gid_attr_group->type);
1136 if (ret)
1137 goto err_free_gid_type;
1138
1139 if (attr.pkey_tbl_len) {
1140 p->pkey_group = kzalloc(sizeof(*p->pkey_group), GFP_KERNEL);
1141 if (!p->pkey_group) {
1142 ret = -ENOMEM;
1143 goto err_remove_gid_type;
1144 }
1145
1146 p->pkey_group->name = "pkeys";
1147 p->pkey_group->attrs = alloc_group_attrs(show_port_pkey,
1148 attr.pkey_tbl_len);
1149 if (!p->pkey_group->attrs) {
1150 ret = -ENOMEM;
1151 goto err_free_pkey_group;
1152 }
1153
1154 ret = sysfs_create_group(&p->kobj, p->pkey_group);
1155 if (ret)
1156 goto err_free_pkey;
1157 }
1158
1159
1160 if (device->ops.init_port && is_full_dev) {
1161 ret = device->ops.init_port(device, port_num, &p->kobj);
1162 if (ret)
1163 goto err_remove_pkey;
1164 }
1165
1166 /*
1167 * If port == 0, it means hw_counters are per device and not per
1168 * port, so holder should be device. Therefore skip per port conunter
1169 * initialization.
1170 */
1171 if (device->ops.alloc_hw_stats && port_num && is_full_dev)
1172 setup_hw_stats(device, p, port_num);
1173
1174 list_add_tail(&p->kobj.entry, &coredev->port_list);
1175
1176 kobject_uevent(&p->kobj, KOBJ_ADD);
1177 return 0;
1178
1179 err_remove_pkey:
1180 if (p->pkey_group)
1181 sysfs_remove_group(&p->kobj, p->pkey_group);
1182
1183 err_free_pkey:
1184 if (p->pkey_group) {
1185 for (i = 0; i < attr.pkey_tbl_len; ++i)
1186 kfree(p->pkey_group->attrs[i]);
1187
1188 kfree(p->pkey_group->attrs);
1189 p->pkey_group->attrs = NULL;
1190 }
1191
1192 err_free_pkey_group:
1193 kfree(p->pkey_group);
1194
1195 err_remove_gid_type:
1196 sysfs_remove_group(&p->gid_attr_group->kobj,
1197 &p->gid_attr_group->type);
1198
1199 err_free_gid_type:
1200 for (i = 0; i < attr.gid_tbl_len; ++i)
1201 kfree(p->gid_attr_group->type.attrs[i]);
1202
1203 kfree(p->gid_attr_group->type.attrs);
1204 p->gid_attr_group->type.attrs = NULL;
1205
1206 err_remove_gid_ndev:
1207 sysfs_remove_group(&p->gid_attr_group->kobj,
1208 &p->gid_attr_group->ndev);
1209
1210 err_free_gid_ndev:
1211 for (i = 0; i < attr.gid_tbl_len; ++i)
1212 kfree(p->gid_attr_group->ndev.attrs[i]);
1213
1214 kfree(p->gid_attr_group->ndev.attrs);
1215 p->gid_attr_group->ndev.attrs = NULL;
1216
1217 err_remove_gid:
1218 sysfs_remove_group(&p->kobj, &p->gid_group);
1219
1220 err_free_gid:
1221 for (i = 0; i < attr.gid_tbl_len; ++i)
1222 kfree(p->gid_group.attrs[i]);
1223
1224 kfree(p->gid_group.attrs);
1225 p->gid_group.attrs = NULL;
1226
1227 err_remove_pma:
1228 if (p->pma_table)
1229 sysfs_remove_group(&p->kobj, p->pma_table);
1230
1231 err_put_gid_attrs:
1232 kobject_put(&p->gid_attr_group->kobj);
1233
1234 err_put:
1235 kobject_put(&p->kobj);
1236 return ret;
1237 }
1238
1239 static const char *node_type_string(int node_type)
1240 {
1241 switch (node_type) {
1242 case RDMA_NODE_IB_CA:
1243 return "CA";
1244 case RDMA_NODE_IB_SWITCH:
1245 return "switch";
1246 case RDMA_NODE_IB_ROUTER:
1247 return "router";
1248 case RDMA_NODE_RNIC:
1249 return "RNIC";
1250 case RDMA_NODE_USNIC:
1251 return "usNIC";
1252 case RDMA_NODE_USNIC_UDP:
1253 return "usNIC UDP";
1254 case RDMA_NODE_UNSPECIFIED:
1255 return "unspecified";
1256 }
1257 return "<unknown>";
1258 }
1259
1260 static ssize_t node_type_show(struct device *device,
1261 struct device_attribute *attr, char *buf)
1262 {
1263 struct ib_device *dev = rdma_device_to_ibdev(device);
1264
1265 return sysfs_emit(buf, "%d: %s\n", dev->node_type,
1266 node_type_string(dev->node_type));
1267 }
1268 static DEVICE_ATTR_RO(node_type);
1269
1270 static ssize_t sys_image_guid_show(struct device *device,
1271 struct device_attribute *dev_attr, char *buf)
1272 {
1273 struct ib_device *dev = rdma_device_to_ibdev(device);
1274 __be16 *guid = (__be16 *)&dev->attrs.sys_image_guid;
1275
1276 return sysfs_emit(buf, "%04x:%04x:%04x:%04x\n",
1277 be16_to_cpu(guid[0]),
1278 be16_to_cpu(guid[1]),
1279 be16_to_cpu(guid[2]),
1280 be16_to_cpu(guid[3]));
1281 }
1282 static DEVICE_ATTR_RO(sys_image_guid);
1283
1284 static ssize_t node_guid_show(struct device *device,
1285 struct device_attribute *attr, char *buf)
1286 {
1287 struct ib_device *dev = rdma_device_to_ibdev(device);
1288 __be16 *node_guid = (__be16 *)&dev->node_guid;
1289
1290 return sysfs_emit(buf, "%04x:%04x:%04x:%04x\n",
1291 be16_to_cpu(node_guid[0]),
1292 be16_to_cpu(node_guid[1]),
1293 be16_to_cpu(node_guid[2]),
1294 be16_to_cpu(node_guid[3]));
1295 }
1296 static DEVICE_ATTR_RO(node_guid);
1297
1298 static ssize_t node_desc_show(struct device *device,
1299 struct device_attribute *attr, char *buf)
1300 {
1301 struct ib_device *dev = rdma_device_to_ibdev(device);
1302
1303 return sysfs_emit(buf, "%.64s\n", dev->node_desc);
1304 }
1305
1306 static ssize_t node_desc_store(struct device *device,
1307 struct device_attribute *attr,
1308 const char *buf, size_t count)
1309 {
1310 struct ib_device *dev = rdma_device_to_ibdev(device);
1311 struct ib_device_modify desc = {};
1312 int ret;
1313
1314 if (!dev->ops.modify_device)
1315 return -EOPNOTSUPP;
1316
1317 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1318 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1319 if (ret)
1320 return ret;
1321
1322 return count;
1323 }
1324 static DEVICE_ATTR_RW(node_desc);
1325
1326 static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr,
1327 char *buf)
1328 {
1329 struct ib_device *dev = rdma_device_to_ibdev(device);
1330 char version[IB_FW_VERSION_NAME_MAX] = {};
1331
1332 ib_get_device_fw_str(dev, version);
1333
1334 return sysfs_emit(buf, "%s\n", version);
1335 }
1336 static DEVICE_ATTR_RO(fw_ver);
1337
1338 static struct attribute *ib_dev_attrs[] = {
1339 &dev_attr_node_type.attr,
1340 &dev_attr_node_guid.attr,
1341 &dev_attr_sys_image_guid.attr,
1342 &dev_attr_fw_ver.attr,
1343 &dev_attr_node_desc.attr,
1344 NULL,
1345 };
1346
1347 const struct attribute_group ib_dev_attr_group = {
1348 .attrs = ib_dev_attrs,
1349 };
1350
1351 void ib_free_port_attrs(struct ib_core_device *coredev)
1352 {
1353 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1354 bool is_full_dev = &device->coredev == coredev;
1355 struct kobject *p, *t;
1356
1357 list_for_each_entry_safe(p, t, &coredev->port_list, entry) {
1358 struct ib_port *port = container_of(p, struct ib_port, kobj);
1359
1360 list_del(&p->entry);
1361 if (port->hw_stats_ag)
1362 free_hsag(&port->kobj, port->hw_stats_ag);
1363 kfree(port->hw_stats);
1364 if (device->port_data && is_full_dev)
1365 device->port_data[port->port_num].hw_stats = NULL;
1366
1367 if (port->pma_table)
1368 sysfs_remove_group(p, port->pma_table);
1369 if (port->pkey_group)
1370 sysfs_remove_group(p, port->pkey_group);
1371 sysfs_remove_group(p, &port->gid_group);
1372 sysfs_remove_group(&port->gid_attr_group->kobj,
1373 &port->gid_attr_group->ndev);
1374 sysfs_remove_group(&port->gid_attr_group->kobj,
1375 &port->gid_attr_group->type);
1376 kobject_put(&port->gid_attr_group->kobj);
1377 kobject_put(p);
1378 }
1379
1380 kobject_put(coredev->ports_kobj);
1381 }
1382
1383 int ib_setup_port_attrs(struct ib_core_device *coredev)
1384 {
1385 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1386 unsigned int port;
1387 int ret;
1388
1389 coredev->ports_kobj = kobject_create_and_add("ports",
1390 &coredev->dev.kobj);
1391 if (!coredev->ports_kobj)
1392 return -ENOMEM;
1393
1394 rdma_for_each_port (device, port) {
1395 ret = add_port(coredev, port);
1396 if (ret)
1397 goto err_put;
1398 }
1399
1400 return 0;
1401
1402 err_put:
1403 ib_free_port_attrs(coredev);
1404 return ret;
1405 }
1406
1407 int ib_device_register_sysfs(struct ib_device *device)
1408 {
1409 int ret;
1410
1411 ret = ib_setup_port_attrs(&device->coredev);
1412 if (ret)
1413 return ret;
1414
1415 if (device->ops.alloc_hw_stats)
1416 setup_hw_stats(device, NULL, 0);
1417
1418 return 0;
1419 }
1420
1421 void ib_device_unregister_sysfs(struct ib_device *device)
1422 {
1423 if (device->hw_stats_ag)
1424 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1425 kfree(device->hw_stats);
1426
1427 ib_free_port_attrs(&device->coredev);
1428 }
1429
1430 /**
1431 * ib_port_register_module_stat - add module counters under relevant port
1432 * of IB device.
1433 *
1434 * @device: IB device to add counters
1435 * @port_num: valid port number
1436 * @kobj: pointer to the kobject to initialize
1437 * @ktype: pointer to the ktype for this kobject.
1438 * @name: the name of the kobject
1439 */
1440 int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
1441 struct kobject *kobj, struct kobj_type *ktype,
1442 const char *name)
1443 {
1444 struct kobject *p, *t;
1445 int ret;
1446
1447 list_for_each_entry_safe(p, t, &device->coredev.port_list, entry) {
1448 struct ib_port *port = container_of(p, struct ib_port, kobj);
1449
1450 if (port->port_num != port_num)
1451 continue;
1452
1453 ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s",
1454 name);
1455 if (ret) {
1456 kobject_put(kobj);
1457 return ret;
1458 }
1459 }
1460
1461 return 0;
1462 }
1463 EXPORT_SYMBOL(ib_port_register_module_stat);
1464
1465 /**
1466 * ib_port_unregister_module_stat - release module counters
1467 * @kobj: pointer to the kobject to release
1468 */
1469 void ib_port_unregister_module_stat(struct kobject *kobj)
1470 {
1471 kobject_put(kobj);
1472 }
1473 EXPORT_SYMBOL(ib_port_unregister_module_stat);
Linux with added FPC-III support