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locking/refcounts: Include fewer headers in <linux/refcount.h>
[linux/fpc-iii.git] / drivers / infiniband / core / sysfs.c
blob31c7efaf8e7ad5b83a8b8f5b2011806f2c33309a
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
46 struct ib_port;
47
48 struct gid_attr_group {
49 struct ib_port *port;
50 struct kobject kobj;
51 struct attribute_group ndev;
52 struct attribute_group type;
53 };
54 struct ib_port {
55 struct kobject kobj;
56 struct ib_device *ibdev;
57 struct gid_attr_group *gid_attr_group;
58 struct attribute_group gid_group;
59 struct attribute_group pkey_group;
60 struct attribute_group *pma_table;
61 struct attribute_group *hw_stats_ag;
62 struct rdma_hw_stats *hw_stats;
63 u8 port_num;
64 };
65
66 struct port_attribute {
67 struct attribute attr;
68 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
69 ssize_t (*store)(struct ib_port *, struct port_attribute *,
70 const char *buf, size_t count);
71 };
72
73 #define PORT_ATTR(_name, _mode, _show, _store) \
74 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
75
76 #define PORT_ATTR_RO(_name) \
77 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
78
79 struct port_table_attribute {
80 struct port_attribute attr;
81 char name[8];
82 int index;
83 __be16 attr_id;
84 };
85
86 struct hw_stats_attribute {
87 struct attribute attr;
88 ssize_t (*show)(struct kobject *kobj,
89 struct attribute *attr, char *buf);
90 ssize_t (*store)(struct kobject *kobj,
91 struct attribute *attr,
92 const char *buf,
93 size_t count);
94 int index;
95 u8 port_num;
96 };
97
98 static ssize_t port_attr_show(struct kobject *kobj,
99 struct attribute *attr, char *buf)
100 {
101 struct port_attribute *port_attr =
102 container_of(attr, struct port_attribute, attr);
103 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
104
105 if (!port_attr->show)
106 return -EIO;
107
108 return port_attr->show(p, port_attr, buf);
109 }
110
111 static ssize_t port_attr_store(struct kobject *kobj,
112 struct attribute *attr,
113 const char *buf, size_t count)
114 {
115 struct port_attribute *port_attr =
116 container_of(attr, struct port_attribute, attr);
117 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
118
119 if (!port_attr->store)
120 return -EIO;
121 return port_attr->store(p, port_attr, buf, count);
122 }
123
124 static const struct sysfs_ops port_sysfs_ops = {
125 .show = port_attr_show,
126 .store = port_attr_store
127 };
128
129 static ssize_t gid_attr_show(struct kobject *kobj,
130 struct attribute *attr, char *buf)
131 {
132 struct port_attribute *port_attr =
133 container_of(attr, struct port_attribute, attr);
134 struct ib_port *p = container_of(kobj, struct gid_attr_group,
135 kobj)->port;
136
137 if (!port_attr->show)
138 return -EIO;
139
140 return port_attr->show(p, port_attr, buf);
141 }
142
143 static const struct sysfs_ops gid_attr_sysfs_ops = {
144 .show = gid_attr_show
145 };
146
147 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
148 char *buf)
149 {
150 struct ib_port_attr attr;
151 ssize_t ret;
152
153 static const char *state_name[] = {
154 [IB_PORT_NOP] = "NOP",
155 [IB_PORT_DOWN] = "DOWN",
156 [IB_PORT_INIT] = "INIT",
157 [IB_PORT_ARMED] = "ARMED",
158 [IB_PORT_ACTIVE] = "ACTIVE",
159 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
160 };
161
162 ret = ib_query_port(p->ibdev, p->port_num, &attr);
163 if (ret)
164 return ret;
165
166 return sprintf(buf, "%d: %s\n", attr.state,
167 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
168 state_name[attr.state] : "UNKNOWN");
169 }
170
171 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
172 char *buf)
173 {
174 struct ib_port_attr attr;
175 ssize_t ret;
176
177 ret = ib_query_port(p->ibdev, p->port_num, &attr);
178 if (ret)
179 return ret;
180
181 return sprintf(buf, "0x%x\n", attr.lid);
182 }
183
184 static ssize_t lid_mask_count_show(struct ib_port *p,
185 struct port_attribute *unused,
186 char *buf)
187 {
188 struct ib_port_attr attr;
189 ssize_t ret;
190
191 ret = ib_query_port(p->ibdev, p->port_num, &attr);
192 if (ret)
193 return ret;
194
195 return sprintf(buf, "%d\n", attr.lmc);
196 }
197
198 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
199 char *buf)
200 {
201 struct ib_port_attr attr;
202 ssize_t ret;
203
204 ret = ib_query_port(p->ibdev, p->port_num, &attr);
205 if (ret)
206 return ret;
207
208 return sprintf(buf, "0x%x\n", attr.sm_lid);
209 }
210
211 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
212 char *buf)
213 {
214 struct ib_port_attr attr;
215 ssize_t ret;
216
217 ret = ib_query_port(p->ibdev, p->port_num, &attr);
218 if (ret)
219 return ret;
220
221 return sprintf(buf, "%d\n", attr.sm_sl);
222 }
223
224 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
225 char *buf)
226 {
227 struct ib_port_attr attr;
228 ssize_t ret;
229
230 ret = ib_query_port(p->ibdev, p->port_num, &attr);
231 if (ret)
232 return ret;
233
234 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
235 }
236
237 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
238 char *buf)
239 {
240 struct ib_port_attr attr;
241 char *speed = "";
242 int rate; /* in deci-Gb/sec */
243 ssize_t ret;
244
245 ret = ib_query_port(p->ibdev, p->port_num, &attr);
246 if (ret)
247 return ret;
248
249 switch (attr.active_speed) {
250 case IB_SPEED_DDR:
251 speed = " DDR";
252 rate = 50;
253 break;
254 case IB_SPEED_QDR:
255 speed = " QDR";
256 rate = 100;
257 break;
258 case IB_SPEED_FDR10:
259 speed = " FDR10";
260 rate = 100;
261 break;
262 case IB_SPEED_FDR:
263 speed = " FDR";
264 rate = 140;
265 break;
266 case IB_SPEED_EDR:
267 speed = " EDR";
268 rate = 250;
269 break;
270 case IB_SPEED_HDR:
271 speed = " HDR";
272 rate = 500;
273 break;
274 case IB_SPEED_SDR:
275 default: /* default to SDR for invalid rates */
276 speed = " SDR";
277 rate = 25;
278 break;
279 }
280
281 rate *= ib_width_enum_to_int(attr.active_width);
282 if (rate < 0)
283 return -EINVAL;
284
285 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
286 rate / 10, rate % 10 ? ".5" : "",
287 ib_width_enum_to_int(attr.active_width), speed);
288 }
289
290 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
291 char *buf)
292 {
293 struct ib_port_attr attr;
294
295 ssize_t ret;
296
297 ret = ib_query_port(p->ibdev, p->port_num, &attr);
298 if (ret)
299 return ret;
300
301 switch (attr.phys_state) {
302 case 1: return sprintf(buf, "1: Sleep\n");
303 case 2: return sprintf(buf, "2: Polling\n");
304 case 3: return sprintf(buf, "3: Disabled\n");
305 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
306 case 5: return sprintf(buf, "5: LinkUp\n");
307 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
308 case 7: return sprintf(buf, "7: Phy Test\n");
309 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
310 }
311 }
312
313 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
314 char *buf)
315 {
316 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
317 case IB_LINK_LAYER_INFINIBAND:
318 return sprintf(buf, "%s\n", "InfiniBand");
319 case IB_LINK_LAYER_ETHERNET:
320 return sprintf(buf, "%s\n", "Ethernet");
321 default:
322 return sprintf(buf, "%s\n", "Unknown");
323 }
324 }
325
326 static PORT_ATTR_RO(state);
327 static PORT_ATTR_RO(lid);
328 static PORT_ATTR_RO(lid_mask_count);
329 static PORT_ATTR_RO(sm_lid);
330 static PORT_ATTR_RO(sm_sl);
331 static PORT_ATTR_RO(cap_mask);
332 static PORT_ATTR_RO(rate);
333 static PORT_ATTR_RO(phys_state);
334 static PORT_ATTR_RO(link_layer);
335
336 static struct attribute *port_default_attrs[] = {
337 &port_attr_state.attr,
338 &port_attr_lid.attr,
339 &port_attr_lid_mask_count.attr,
340 &port_attr_sm_lid.attr,
341 &port_attr_sm_sl.attr,
342 &port_attr_cap_mask.attr,
343 &port_attr_rate.attr,
344 &port_attr_phys_state.attr,
345 &port_attr_link_layer.attr,
346 NULL
347 };
348
349 static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf)
350 {
351 if (!gid_attr->ndev)
352 return -EINVAL;
353
354 return sprintf(buf, "%s\n", gid_attr->ndev->name);
355 }
356
357 static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf)
358 {
359 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
360 }
361
362 static ssize_t _show_port_gid_attr(struct ib_port *p,
363 struct port_attribute *attr,
364 char *buf,
365 size_t (*print)(struct ib_gid_attr *gid_attr,
366 char *buf))
367 {
368 struct port_table_attribute *tab_attr =
369 container_of(attr, struct port_table_attribute, attr);
370 union ib_gid gid;
371 struct ib_gid_attr gid_attr = {};
372 ssize_t ret;
373
374 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid,
375 &gid_attr);
376 if (ret)
377 goto err;
378
379 ret = print(&gid_attr, buf);
380
381 err:
382 if (gid_attr.ndev)
383 dev_put(gid_attr.ndev);
384 return ret;
385 }
386
387 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
388 char *buf)
389 {
390 struct port_table_attribute *tab_attr =
391 container_of(attr, struct port_table_attribute, attr);
392 union ib_gid *pgid;
393 union ib_gid gid;
394 ssize_t ret;
395
396 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL);
397
398 /* If reading GID fails, it is likely due to GID entry being empty
399 * (invalid) or reserved GID in the table.
400 * User space expects to read GID table entries as long as it given
401 * index is within GID table size.
402 * Administrative/debugging tool fails to query rest of the GID entries
403 * if it hits error while querying a GID of the given index.
404 * To avoid user space throwing such error on fail to read gid, return
405 * zero GID as before. This maintains backward compatibility.
406 */
407 if (ret)
408 pgid = &zgid;
409 else
410 pgid = &gid;
411 return sprintf(buf, "%pI6\n", pgid->raw);
412 }
413
414 static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
415 struct port_attribute *attr, char *buf)
416 {
417 return _show_port_gid_attr(p, attr, buf, print_ndev);
418 }
419
420 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
421 struct port_attribute *attr,
422 char *buf)
423 {
424 return _show_port_gid_attr(p, attr, buf, print_gid_type);
425 }
426
427 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
428 char *buf)
429 {
430 struct port_table_attribute *tab_attr =
431 container_of(attr, struct port_table_attribute, attr);
432 u16 pkey;
433 ssize_t ret;
434
435 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
436 if (ret)
437 return ret;
438
439 return sprintf(buf, "0x%04x\n", pkey);
440 }
441
442 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
443 struct port_table_attribute port_pma_attr_##_name = { \
444 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
445 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
446 .attr_id = IB_PMA_PORT_COUNTERS , \
447 }
448
449 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
450 struct port_table_attribute port_pma_attr_ext_##_name = { \
451 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
452 .index = (_offset) | ((_width) << 16), \
453 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
454 }
455
456 /*
457 * Get a Perfmgmt MAD block of data.
458 * Returns error code or the number of bytes retrieved.
459 */
460 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
461 void *data, int offset, size_t size)
462 {
463 struct ib_mad *in_mad;
464 struct ib_mad *out_mad;
465 size_t mad_size = sizeof(*out_mad);
466 u16 out_mad_pkey_index = 0;
467 ssize_t ret;
468
469 if (!dev->process_mad)
470 return -ENOSYS;
471
472 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
473 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
474 if (!in_mad || !out_mad) {
475 ret = -ENOMEM;
476 goto out;
477 }
478
479 in_mad->mad_hdr.base_version = 1;
480 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
481 in_mad->mad_hdr.class_version = 1;
482 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
483 in_mad->mad_hdr.attr_id = attr;
484
485 if (attr != IB_PMA_CLASS_PORT_INFO)
486 in_mad->data[41] = port_num; /* PortSelect field */
487
488 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY,
489 port_num, NULL, NULL,
490 (const struct ib_mad_hdr *)in_mad, mad_size,
491 (struct ib_mad_hdr *)out_mad, &mad_size,
492 &out_mad_pkey_index) &
493 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
494 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
495 ret = -EINVAL;
496 goto out;
497 }
498 memcpy(data, out_mad->data + offset, size);
499 ret = size;
500 out:
501 kfree(in_mad);
502 kfree(out_mad);
503 return ret;
504 }
505
506 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
507 char *buf)
508 {
509 struct port_table_attribute *tab_attr =
510 container_of(attr, struct port_table_attribute, attr);
511 int offset = tab_attr->index & 0xffff;
512 int width = (tab_attr->index >> 16) & 0xff;
513 ssize_t ret;
514 u8 data[8];
515
516 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
517 40 + offset / 8, sizeof(data));
518 if (ret < 0)
519 return sprintf(buf, "N/A (no PMA)\n");
520
521 switch (width) {
522 case 4:
523 ret = sprintf(buf, "%u\n", (*data >>
524 (4 - (offset % 8))) & 0xf);
525 break;
526 case 8:
527 ret = sprintf(buf, "%u\n", *data);
528 break;
529 case 16:
530 ret = sprintf(buf, "%u\n",
531 be16_to_cpup((__be16 *)data));
532 break;
533 case 32:
534 ret = sprintf(buf, "%u\n",
535 be32_to_cpup((__be32 *)data));
536 break;
537 case 64:
538 ret = sprintf(buf, "%llu\n",
539 be64_to_cpup((__be64 *)data));
540 break;
541
542 default:
543 ret = 0;
544 }
545
546 return ret;
547 }
548
549 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
550 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
551 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
552 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
553 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
554 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
555 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
556 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
557 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
558 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
559 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
560 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
561 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
562 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
563 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
564 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
565 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
566
567 /*
568 * Counters added by extended set
569 */
570 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
571 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
572 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
573 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
574 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
575 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
576 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
577 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
578
579 static struct attribute *pma_attrs[] = {
580 &port_pma_attr_symbol_error.attr.attr,
581 &port_pma_attr_link_error_recovery.attr.attr,
582 &port_pma_attr_link_downed.attr.attr,
583 &port_pma_attr_port_rcv_errors.attr.attr,
584 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
585 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
586 &port_pma_attr_port_xmit_discards.attr.attr,
587 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
588 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
589 &port_pma_attr_local_link_integrity_errors.attr.attr,
590 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
591 &port_pma_attr_VL15_dropped.attr.attr,
592 &port_pma_attr_port_xmit_data.attr.attr,
593 &port_pma_attr_port_rcv_data.attr.attr,
594 &port_pma_attr_port_xmit_packets.attr.attr,
595 &port_pma_attr_port_rcv_packets.attr.attr,
596 &port_pma_attr_port_xmit_wait.attr.attr,
597 NULL
598 };
599
600 static struct attribute *pma_attrs_ext[] = {
601 &port_pma_attr_symbol_error.attr.attr,
602 &port_pma_attr_link_error_recovery.attr.attr,
603 &port_pma_attr_link_downed.attr.attr,
604 &port_pma_attr_port_rcv_errors.attr.attr,
605 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
606 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
607 &port_pma_attr_port_xmit_discards.attr.attr,
608 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
609 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
610 &port_pma_attr_local_link_integrity_errors.attr.attr,
611 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
612 &port_pma_attr_VL15_dropped.attr.attr,
613 &port_pma_attr_ext_port_xmit_data.attr.attr,
614 &port_pma_attr_ext_port_rcv_data.attr.attr,
615 &port_pma_attr_ext_port_xmit_packets.attr.attr,
616 &port_pma_attr_port_xmit_wait.attr.attr,
617 &port_pma_attr_ext_port_rcv_packets.attr.attr,
618 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
619 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
620 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
621 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
622 NULL
623 };
624
625 static struct attribute *pma_attrs_noietf[] = {
626 &port_pma_attr_symbol_error.attr.attr,
627 &port_pma_attr_link_error_recovery.attr.attr,
628 &port_pma_attr_link_downed.attr.attr,
629 &port_pma_attr_port_rcv_errors.attr.attr,
630 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
631 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
632 &port_pma_attr_port_xmit_discards.attr.attr,
633 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
634 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
635 &port_pma_attr_local_link_integrity_errors.attr.attr,
636 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
637 &port_pma_attr_VL15_dropped.attr.attr,
638 &port_pma_attr_ext_port_xmit_data.attr.attr,
639 &port_pma_attr_ext_port_rcv_data.attr.attr,
640 &port_pma_attr_ext_port_xmit_packets.attr.attr,
641 &port_pma_attr_ext_port_rcv_packets.attr.attr,
642 &port_pma_attr_port_xmit_wait.attr.attr,
643 NULL
644 };
645
646 static struct attribute_group pma_group = {
647 .name = "counters",
648 .attrs = pma_attrs
649 };
650
651 static struct attribute_group pma_group_ext = {
652 .name = "counters",
653 .attrs = pma_attrs_ext
654 };
655
656 static struct attribute_group pma_group_noietf = {
657 .name = "counters",
658 .attrs = pma_attrs_noietf
659 };
660
661 static void ib_port_release(struct kobject *kobj)
662 {
663 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
664 struct attribute *a;
665 int i;
666
667 if (p->gid_group.attrs) {
668 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
669 kfree(a);
670
671 kfree(p->gid_group.attrs);
672 }
673
674 if (p->pkey_group.attrs) {
675 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
676 kfree(a);
677
678 kfree(p->pkey_group.attrs);
679 }
680
681 kfree(p);
682 }
683
684 static void ib_port_gid_attr_release(struct kobject *kobj)
685 {
686 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
687 kobj);
688 struct attribute *a;
689 int i;
690
691 if (g->ndev.attrs) {
692 for (i = 0; (a = g->ndev.attrs[i]); ++i)
693 kfree(a);
694
695 kfree(g->ndev.attrs);
696 }
697
698 if (g->type.attrs) {
699 for (i = 0; (a = g->type.attrs[i]); ++i)
700 kfree(a);
701
702 kfree(g->type.attrs);
703 }
704
705 kfree(g);
706 }
707
708 static struct kobj_type port_type = {
709 .release = ib_port_release,
710 .sysfs_ops = &port_sysfs_ops,
711 .default_attrs = port_default_attrs
712 };
713
714 static struct kobj_type gid_attr_type = {
715 .sysfs_ops = &gid_attr_sysfs_ops,
716 .release = ib_port_gid_attr_release
717 };
718
719 static struct attribute **
720 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
721 struct port_attribute *, char *buf),
722 int len)
723 {
724 struct attribute **tab_attr;
725 struct port_table_attribute *element;
726 int i;
727
728 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
729 if (!tab_attr)
730 return NULL;
731
732 for (i = 0; i < len; i++) {
733 element = kzalloc(sizeof(struct port_table_attribute),
734 GFP_KERNEL);
735 if (!element)
736 goto err;
737
738 if (snprintf(element->name, sizeof(element->name),
739 "%d", i) >= sizeof(element->name)) {
740 kfree(element);
741 goto err;
742 }
743
744 element->attr.attr.name = element->name;
745 element->attr.attr.mode = S_IRUGO;
746 element->attr.show = show;
747 element->index = i;
748 sysfs_attr_init(&element->attr.attr);
749
750 tab_attr[i] = &element->attr.attr;
751 }
752
753 return tab_attr;
754
755 err:
756 while (--i >= 0)
757 kfree(tab_attr[i]);
758 kfree(tab_attr);
759 return NULL;
760 }
761
762 /*
763 * Figure out which counter table to use depending on
764 * the device capabilities.
765 */
766 static struct attribute_group *get_counter_table(struct ib_device *dev,
767 int port_num)
768 {
769 struct ib_class_port_info cpi;
770
771 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
772 &cpi, 40, sizeof(cpi)) >= 0) {
773 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
774 /* We have extended counters */
775 return &pma_group_ext;
776
777 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
778 /* But not the IETF ones */
779 return &pma_group_noietf;
780 }
781
782 /* Fall back to normal counters */
783 return &pma_group;
784 }
785
786 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
787 u8 port_num, int index)
788 {
789 int ret;
790
791 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
792 return 0;
793 ret = dev->get_hw_stats(dev, stats, port_num, index);
794 if (ret < 0)
795 return ret;
796 if (ret == stats->num_counters)
797 stats->timestamp = jiffies;
798
799 return 0;
800 }
801
802 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf)
803 {
804 return sprintf(buf, "%llu\n", stats->value[index]);
805 }
806
807 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
808 char *buf)
809 {
810 struct ib_device *dev;
811 struct ib_port *port;
812 struct hw_stats_attribute *hsa;
813 struct rdma_hw_stats *stats;
814 int ret;
815
816 hsa = container_of(attr, struct hw_stats_attribute, attr);
817 if (!hsa->port_num) {
818 dev = container_of((struct device *)kobj,
819 struct ib_device, dev);
820 stats = dev->hw_stats;
821 } else {
822 port = container_of(kobj, struct ib_port, kobj);
823 dev = port->ibdev;
824 stats = port->hw_stats;
825 }
826 mutex_lock(&stats->lock);
827 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
828 if (ret)
829 goto unlock;
830 ret = print_hw_stat(stats, hsa->index, buf);
831 unlock:
832 mutex_unlock(&stats->lock);
833
834 return ret;
835 }
836
837 static ssize_t show_stats_lifespan(struct kobject *kobj,
838 struct attribute *attr,
839 char *buf)
840 {
841 struct hw_stats_attribute *hsa;
842 struct rdma_hw_stats *stats;
843 int msecs;
844
845 hsa = container_of(attr, struct hw_stats_attribute, attr);
846 if (!hsa->port_num) {
847 struct ib_device *dev = container_of((struct device *)kobj,
848 struct ib_device, dev);
849
850 stats = dev->hw_stats;
851 } else {
852 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
853
854 stats = p->hw_stats;
855 }
856
857 mutex_lock(&stats->lock);
858 msecs = jiffies_to_msecs(stats->lifespan);
859 mutex_unlock(&stats->lock);
860
861 return sprintf(buf, "%d\n", msecs);
862 }
863
864 static ssize_t set_stats_lifespan(struct kobject *kobj,
865 struct attribute *attr,
866 const char *buf, size_t count)
867 {
868 struct hw_stats_attribute *hsa;
869 struct rdma_hw_stats *stats;
870 int msecs;
871 int jiffies;
872 int ret;
873
874 ret = kstrtoint(buf, 10, &msecs);
875 if (ret)
876 return ret;
877 if (msecs < 0 || msecs > 10000)
878 return -EINVAL;
879 jiffies = msecs_to_jiffies(msecs);
880 hsa = container_of(attr, struct hw_stats_attribute, attr);
881 if (!hsa->port_num) {
882 struct ib_device *dev = container_of((struct device *)kobj,
883 struct ib_device, dev);
884
885 stats = dev->hw_stats;
886 } else {
887 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
888
889 stats = p->hw_stats;
890 }
891
892 mutex_lock(&stats->lock);
893 stats->lifespan = jiffies;
894 mutex_unlock(&stats->lock);
895
896 return count;
897 }
898
899 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
900 {
901 struct attribute **attr;
902
903 sysfs_remove_group(kobj, attr_group);
904
905 for (attr = attr_group->attrs; *attr; attr++)
906 kfree(*attr);
907 kfree(attr_group);
908 }
909
910 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
911 {
912 struct hw_stats_attribute *hsa;
913
914 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
915 if (!hsa)
916 return NULL;
917
918 hsa->attr.name = (char *)name;
919 hsa->attr.mode = S_IRUGO;
920 hsa->show = show_hw_stats;
921 hsa->store = NULL;
922 hsa->index = index;
923 hsa->port_num = port_num;
924
925 return &hsa->attr;
926 }
927
928 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
929 {
930 struct hw_stats_attribute *hsa;
931
932 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
933 if (!hsa)
934 return NULL;
935
936 hsa->attr.name = name;
937 hsa->attr.mode = S_IWUSR | S_IRUGO;
938 hsa->show = show_stats_lifespan;
939 hsa->store = set_stats_lifespan;
940 hsa->index = 0;
941 hsa->port_num = port_num;
942
943 return &hsa->attr;
944 }
945
946 static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
947 u8 port_num)
948 {
949 struct attribute_group *hsag;
950 struct rdma_hw_stats *stats;
951 int i, ret;
952
953 stats = device->alloc_hw_stats(device, port_num);
954
955 if (!stats)
956 return;
957
958 if (!stats->names || stats->num_counters <= 0)
959 goto err_free_stats;
960
961 /*
962 * Two extra attribue elements here, one for the lifespan entry and
963 * one to NULL terminate the list for the sysfs core code
964 */
965 hsag = kzalloc(sizeof(*hsag) +
966 sizeof(void *) * (stats->num_counters + 2),
967 GFP_KERNEL);
968 if (!hsag)
969 goto err_free_stats;
970
971 ret = device->get_hw_stats(device, stats, port_num,
972 stats->num_counters);
973 if (ret != stats->num_counters)
974 goto err_free_hsag;
975
976 stats->timestamp = jiffies;
977
978 hsag->name = "hw_counters";
979 hsag->attrs = (void *)hsag + sizeof(*hsag);
980
981 for (i = 0; i < stats->num_counters; i++) {
982 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
983 if (!hsag->attrs[i])
984 goto err;
985 sysfs_attr_init(hsag->attrs[i]);
986 }
987
988 mutex_init(&stats->lock);
989 /* treat an error here as non-fatal */
990 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
991 if (hsag->attrs[i])
992 sysfs_attr_init(hsag->attrs[i]);
993
994 if (port) {
995 struct kobject *kobj = &port->kobj;
996 ret = sysfs_create_group(kobj, hsag);
997 if (ret)
998 goto err;
999 port->hw_stats_ag = hsag;
1000 port->hw_stats = stats;
1001 } else {
1002 struct kobject *kobj = &device->dev.kobj;
1003 ret = sysfs_create_group(kobj, hsag);
1004 if (ret)
1005 goto err;
1006 device->hw_stats_ag = hsag;
1007 device->hw_stats = stats;
1008 }
1009
1010 return;
1011
1012 err:
1013 for (; i >= 0; i--)
1014 kfree(hsag->attrs[i]);
1015 err_free_hsag:
1016 kfree(hsag);
1017 err_free_stats:
1018 kfree(stats);
1019 return;
1020 }
1021
1022 static int add_port(struct ib_device *device, int port_num,
1023 int (*port_callback)(struct ib_device *,
1024 u8, struct kobject *))
1025 {
1026 struct ib_port *p;
1027 struct ib_port_attr attr;
1028 int i;
1029 int ret;
1030
1031 ret = ib_query_port(device, port_num, &attr);
1032 if (ret)
1033 return ret;
1034
1035 p = kzalloc(sizeof *p, GFP_KERNEL);
1036 if (!p)
1037 return -ENOMEM;
1038
1039 p->ibdev = device;
1040 p->port_num = port_num;
1041
1042 ret = kobject_init_and_add(&p->kobj, &port_type,
1043 device->ports_parent,
1044 "%d", port_num);
1045 if (ret) {
1046 kfree(p);
1047 return ret;
1048 }
1049
1050 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
1051 if (!p->gid_attr_group) {
1052 ret = -ENOMEM;
1053 goto err_put;
1054 }
1055
1056 p->gid_attr_group->port = p;
1057 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1058 &p->kobj, "gid_attrs");
1059 if (ret) {
1060 kfree(p->gid_attr_group);
1061 goto err_put;
1062 }
1063
1064 p->pma_table = get_counter_table(device, port_num);
1065 ret = sysfs_create_group(&p->kobj, p->pma_table);
1066 if (ret)
1067 goto err_put_gid_attrs;
1068
1069 p->gid_group.name = "gids";
1070 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1071 if (!p->gid_group.attrs) {
1072 ret = -ENOMEM;
1073 goto err_remove_pma;
1074 }
1075
1076 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1077 if (ret)
1078 goto err_free_gid;
1079
1080 p->gid_attr_group->ndev.name = "ndevs";
1081 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1082 attr.gid_tbl_len);
1083 if (!p->gid_attr_group->ndev.attrs) {
1084 ret = -ENOMEM;
1085 goto err_remove_gid;
1086 }
1087
1088 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1089 &p->gid_attr_group->ndev);
1090 if (ret)
1091 goto err_free_gid_ndev;
1092
1093 p->gid_attr_group->type.name = "types";
1094 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1095 attr.gid_tbl_len);
1096 if (!p->gid_attr_group->type.attrs) {
1097 ret = -ENOMEM;
1098 goto err_remove_gid_ndev;
1099 }
1100
1101 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1102 &p->gid_attr_group->type);
1103 if (ret)
1104 goto err_free_gid_type;
1105
1106 p->pkey_group.name = "pkeys";
1107 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
1108 attr.pkey_tbl_len);
1109 if (!p->pkey_group.attrs) {
1110 ret = -ENOMEM;
1111 goto err_remove_gid_type;
1112 }
1113
1114 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
1115 if (ret)
1116 goto err_free_pkey;
1117
1118 if (port_callback) {
1119 ret = port_callback(device, port_num, &p->kobj);
1120 if (ret)
1121 goto err_remove_pkey;
1122 }
1123
1124 /*
1125 * If port == 0, it means we have only one port and the parent
1126 * device, not this port device, should be the holder of the
1127 * hw_counters
1128 */
1129 if (device->alloc_hw_stats && port_num)
1130 setup_hw_stats(device, p, port_num);
1131
1132 list_add_tail(&p->kobj.entry, &device->port_list);
1133
1134 kobject_uevent(&p->kobj, KOBJ_ADD);
1135 return 0;
1136
1137 err_remove_pkey:
1138 sysfs_remove_group(&p->kobj, &p->pkey_group);
1139
1140 err_free_pkey:
1141 for (i = 0; i < attr.pkey_tbl_len; ++i)
1142 kfree(p->pkey_group.attrs[i]);
1143
1144 kfree(p->pkey_group.attrs);
1145 p->pkey_group.attrs = NULL;
1146
1147 err_remove_gid_type:
1148 sysfs_remove_group(&p->gid_attr_group->kobj,
1149 &p->gid_attr_group->type);
1150
1151 err_free_gid_type:
1152 for (i = 0; i < attr.gid_tbl_len; ++i)
1153 kfree(p->gid_attr_group->type.attrs[i]);
1154
1155 kfree(p->gid_attr_group->type.attrs);
1156 p->gid_attr_group->type.attrs = NULL;
1157
1158 err_remove_gid_ndev:
1159 sysfs_remove_group(&p->gid_attr_group->kobj,
1160 &p->gid_attr_group->ndev);
1161
1162 err_free_gid_ndev:
1163 for (i = 0; i < attr.gid_tbl_len; ++i)
1164 kfree(p->gid_attr_group->ndev.attrs[i]);
1165
1166 kfree(p->gid_attr_group->ndev.attrs);
1167 p->gid_attr_group->ndev.attrs = NULL;
1168
1169 err_remove_gid:
1170 sysfs_remove_group(&p->kobj, &p->gid_group);
1171
1172 err_free_gid:
1173 for (i = 0; i < attr.gid_tbl_len; ++i)
1174 kfree(p->gid_group.attrs[i]);
1175
1176 kfree(p->gid_group.attrs);
1177 p->gid_group.attrs = NULL;
1178
1179 err_remove_pma:
1180 sysfs_remove_group(&p->kobj, p->pma_table);
1181
1182 err_put_gid_attrs:
1183 kobject_put(&p->gid_attr_group->kobj);
1184
1185 err_put:
1186 kobject_put(&p->kobj);
1187 return ret;
1188 }
1189
1190 static ssize_t show_node_type(struct device *device,
1191 struct device_attribute *attr, char *buf)
1192 {
1193 struct ib_device *dev = container_of(device, struct ib_device, dev);
1194
1195 switch (dev->node_type) {
1196 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
1197 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
1198 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
1199 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1200 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1201 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1202 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1203 }
1204 }
1205
1206 static ssize_t show_sys_image_guid(struct device *device,
1207 struct device_attribute *dev_attr, char *buf)
1208 {
1209 struct ib_device *dev = container_of(device, struct ib_device, dev);
1210
1211 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1212 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1213 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1214 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1215 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1216 }
1217
1218 static ssize_t show_node_guid(struct device *device,
1219 struct device_attribute *attr, char *buf)
1220 {
1221 struct ib_device *dev = container_of(device, struct ib_device, dev);
1222
1223 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1224 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1225 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1226 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1227 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1228 }
1229
1230 static ssize_t show_node_desc(struct device *device,
1231 struct device_attribute *attr, char *buf)
1232 {
1233 struct ib_device *dev = container_of(device, struct ib_device, dev);
1234
1235 return sprintf(buf, "%.64s\n", dev->node_desc);
1236 }
1237
1238 static ssize_t set_node_desc(struct device *device,
1239 struct device_attribute *attr,
1240 const char *buf, size_t count)
1241 {
1242 struct ib_device *dev = container_of(device, struct ib_device, dev);
1243 struct ib_device_modify desc = {};
1244 int ret;
1245
1246 if (!dev->modify_device)
1247 return -EIO;
1248
1249 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1250 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1251 if (ret)
1252 return ret;
1253
1254 return count;
1255 }
1256
1257 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1258 char *buf)
1259 {
1260 struct ib_device *dev = container_of(device, struct ib_device, dev);
1261
1262 ib_get_device_fw_str(dev, buf);
1263 strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX);
1264 return strlen(buf);
1265 }
1266
1267 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
1268 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
1269 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
1270 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
1271 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1272
1273 static struct device_attribute *ib_class_attributes[] = {
1274 &dev_attr_node_type,
1275 &dev_attr_sys_image_guid,
1276 &dev_attr_node_guid,
1277 &dev_attr_node_desc,
1278 &dev_attr_fw_ver,
1279 };
1280
1281 static void free_port_list_attributes(struct ib_device *device)
1282 {
1283 struct kobject *p, *t;
1284
1285 list_for_each_entry_safe(p, t, &device->port_list, entry) {
1286 struct ib_port *port = container_of(p, struct ib_port, kobj);
1287 list_del(&p->entry);
1288 if (port->hw_stats) {
1289 kfree(port->hw_stats);
1290 free_hsag(&port->kobj, port->hw_stats_ag);
1291 }
1292 sysfs_remove_group(p, port->pma_table);
1293 sysfs_remove_group(p, &port->pkey_group);
1294 sysfs_remove_group(p, &port->gid_group);
1295 sysfs_remove_group(&port->gid_attr_group->kobj,
1296 &port->gid_attr_group->ndev);
1297 sysfs_remove_group(&port->gid_attr_group->kobj,
1298 &port->gid_attr_group->type);
1299 kobject_put(&port->gid_attr_group->kobj);
1300 kobject_put(p);
1301 }
1302
1303 kobject_put(device->ports_parent);
1304 }
1305
1306 int ib_device_register_sysfs(struct ib_device *device,
1307 int (*port_callback)(struct ib_device *,
1308 u8, struct kobject *))
1309 {
1310 struct device *class_dev = &device->dev;
1311 int ret;
1312 int i;
1313
1314 ret = dev_set_name(class_dev, "%s", device->name);
1315 if (ret)
1316 return ret;
1317
1318 ret = device_add(class_dev);
1319 if (ret)
1320 goto err;
1321
1322 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
1323 ret = device_create_file(class_dev, ib_class_attributes[i]);
1324 if (ret)
1325 goto err_unregister;
1326 }
1327
1328 device->ports_parent = kobject_create_and_add("ports",
1329 &class_dev->kobj);
1330 if (!device->ports_parent) {
1331 ret = -ENOMEM;
1332 goto err_put;
1333 }
1334
1335 if (rdma_cap_ib_switch(device)) {
1336 ret = add_port(device, 0, port_callback);
1337 if (ret)
1338 goto err_put;
1339 } else {
1340 for (i = 1; i <= device->phys_port_cnt; ++i) {
1341 ret = add_port(device, i, port_callback);
1342 if (ret)
1343 goto err_put;
1344 }
1345 }
1346
1347 if (device->alloc_hw_stats)
1348 setup_hw_stats(device, NULL, 0);
1349
1350 return 0;
1351
1352 err_put:
1353 free_port_list_attributes(device);
1354
1355 err_unregister:
1356 device_del(class_dev);
1357
1358 err:
1359 return ret;
1360 }
1361
1362 void ib_device_unregister_sysfs(struct ib_device *device)
1363 {
1364 int i;
1365
1366 /* Hold kobject until ib_dealloc_device() */
1367 kobject_get(&device->dev.kobj);
1368
1369 free_port_list_attributes(device);
1370
1371 if (device->hw_stats) {
1372 kfree(device->hw_stats);
1373 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1374 }
1375
1376 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
1377 device_remove_file(&device->dev, ib_class_attributes[i]);
1378
1379 device_unregister(&device->dev);
1380 }
Linux with added FPC-III support