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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / infiniband / core / sysfs.c
blob8ae1308eecc715d87131af93a97bdfc10304b55b
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 rate = 25;
277 break;
278 }
279
280 rate *= ib_width_enum_to_int(attr.active_width);
281 if (rate < 0)
282 return -EINVAL;
283
284 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
285 rate / 10, rate % 10 ? ".5" : "",
286 ib_width_enum_to_int(attr.active_width), speed);
287 }
288
289 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
290 char *buf)
291 {
292 struct ib_port_attr attr;
293
294 ssize_t ret;
295
296 ret = ib_query_port(p->ibdev, p->port_num, &attr);
297 if (ret)
298 return ret;
299
300 switch (attr.phys_state) {
301 case 1: return sprintf(buf, "1: Sleep\n");
302 case 2: return sprintf(buf, "2: Polling\n");
303 case 3: return sprintf(buf, "3: Disabled\n");
304 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
305 case 5: return sprintf(buf, "5: LinkUp\n");
306 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
307 case 7: return sprintf(buf, "7: Phy Test\n");
308 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
309 }
310 }
311
312 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
313 char *buf)
314 {
315 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
316 case IB_LINK_LAYER_INFINIBAND:
317 return sprintf(buf, "%s\n", "InfiniBand");
318 case IB_LINK_LAYER_ETHERNET:
319 return sprintf(buf, "%s\n", "Ethernet");
320 default:
321 return sprintf(buf, "%s\n", "Unknown");
322 }
323 }
324
325 static PORT_ATTR_RO(state);
326 static PORT_ATTR_RO(lid);
327 static PORT_ATTR_RO(lid_mask_count);
328 static PORT_ATTR_RO(sm_lid);
329 static PORT_ATTR_RO(sm_sl);
330 static PORT_ATTR_RO(cap_mask);
331 static PORT_ATTR_RO(rate);
332 static PORT_ATTR_RO(phys_state);
333 static PORT_ATTR_RO(link_layer);
334
335 static struct attribute *port_default_attrs[] = {
336 &port_attr_state.attr,
337 &port_attr_lid.attr,
338 &port_attr_lid_mask_count.attr,
339 &port_attr_sm_lid.attr,
340 &port_attr_sm_sl.attr,
341 &port_attr_cap_mask.attr,
342 &port_attr_rate.attr,
343 &port_attr_phys_state.attr,
344 &port_attr_link_layer.attr,
345 NULL
346 };
347
348 static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf)
349 {
350 if (!gid_attr->ndev)
351 return -EINVAL;
352
353 return sprintf(buf, "%s\n", gid_attr->ndev->name);
354 }
355
356 static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf)
357 {
358 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
359 }
360
361 static ssize_t _show_port_gid_attr(struct ib_port *p,
362 struct port_attribute *attr,
363 char *buf,
364 size_t (*print)(struct ib_gid_attr *gid_attr,
365 char *buf))
366 {
367 struct port_table_attribute *tab_attr =
368 container_of(attr, struct port_table_attribute, attr);
369 union ib_gid gid;
370 struct ib_gid_attr gid_attr = {};
371 ssize_t ret;
372
373 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid,
374 &gid_attr);
375 if (ret)
376 goto err;
377
378 ret = print(&gid_attr, buf);
379
380 err:
381 if (gid_attr.ndev)
382 dev_put(gid_attr.ndev);
383 return ret;
384 }
385
386 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
387 char *buf)
388 {
389 struct port_table_attribute *tab_attr =
390 container_of(attr, struct port_table_attribute, attr);
391 union ib_gid gid;
392 ssize_t ret;
393
394 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL);
395 if (ret)
396 return ret;
397
398 return sprintf(buf, "%pI6\n", gid.raw);
399 }
400
401 static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
402 struct port_attribute *attr, char *buf)
403 {
404 return _show_port_gid_attr(p, attr, buf, print_ndev);
405 }
406
407 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
408 struct port_attribute *attr,
409 char *buf)
410 {
411 return _show_port_gid_attr(p, attr, buf, print_gid_type);
412 }
413
414 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
415 char *buf)
416 {
417 struct port_table_attribute *tab_attr =
418 container_of(attr, struct port_table_attribute, attr);
419 u16 pkey;
420 ssize_t ret;
421
422 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
423 if (ret)
424 return ret;
425
426 return sprintf(buf, "0x%04x\n", pkey);
427 }
428
429 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
430 struct port_table_attribute port_pma_attr_##_name = { \
431 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
432 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
433 .attr_id = IB_PMA_PORT_COUNTERS , \
434 }
435
436 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
437 struct port_table_attribute port_pma_attr_ext_##_name = { \
438 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
439 .index = (_offset) | ((_width) << 16), \
440 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
441 }
442
443 /*
444 * Get a Perfmgmt MAD block of data.
445 * Returns error code or the number of bytes retrieved.
446 */
447 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
448 void *data, int offset, size_t size)
449 {
450 struct ib_mad *in_mad;
451 struct ib_mad *out_mad;
452 size_t mad_size = sizeof(*out_mad);
453 u16 out_mad_pkey_index = 0;
454 ssize_t ret;
455
456 if (!dev->process_mad)
457 return -ENOSYS;
458
459 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
460 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
461 if (!in_mad || !out_mad) {
462 ret = -ENOMEM;
463 goto out;
464 }
465
466 in_mad->mad_hdr.base_version = 1;
467 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
468 in_mad->mad_hdr.class_version = 1;
469 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
470 in_mad->mad_hdr.attr_id = attr;
471
472 if (attr != IB_PMA_CLASS_PORT_INFO)
473 in_mad->data[41] = port_num; /* PortSelect field */
474
475 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY,
476 port_num, NULL, NULL,
477 (const struct ib_mad_hdr *)in_mad, mad_size,
478 (struct ib_mad_hdr *)out_mad, &mad_size,
479 &out_mad_pkey_index) &
480 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
481 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
482 ret = -EINVAL;
483 goto out;
484 }
485 memcpy(data, out_mad->data + offset, size);
486 ret = size;
487 out:
488 kfree(in_mad);
489 kfree(out_mad);
490 return ret;
491 }
492
493 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
494 char *buf)
495 {
496 struct port_table_attribute *tab_attr =
497 container_of(attr, struct port_table_attribute, attr);
498 int offset = tab_attr->index & 0xffff;
499 int width = (tab_attr->index >> 16) & 0xff;
500 ssize_t ret;
501 u8 data[8];
502
503 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
504 40 + offset / 8, sizeof(data));
505 if (ret < 0)
506 return sprintf(buf, "N/A (no PMA)\n");
507
508 switch (width) {
509 case 4:
510 ret = sprintf(buf, "%u\n", (*data >>
511 (4 - (offset % 8))) & 0xf);
512 break;
513 case 8:
514 ret = sprintf(buf, "%u\n", *data);
515 break;
516 case 16:
517 ret = sprintf(buf, "%u\n",
518 be16_to_cpup((__be16 *)data));
519 break;
520 case 32:
521 ret = sprintf(buf, "%u\n",
522 be32_to_cpup((__be32 *)data));
523 break;
524 case 64:
525 ret = sprintf(buf, "%llu\n",
526 be64_to_cpup((__be64 *)data));
527 break;
528
529 default:
530 ret = 0;
531 }
532
533 return ret;
534 }
535
536 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
537 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
538 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
539 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
540 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
541 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
542 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
543 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
544 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
545 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
546 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
547 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
548 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
549 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
550 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
551 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
552 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
553
554 /*
555 * Counters added by extended set
556 */
557 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
558 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
559 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
560 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
561 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
562 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
563 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
564 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
565
566 static struct attribute *pma_attrs[] = {
567 &port_pma_attr_symbol_error.attr.attr,
568 &port_pma_attr_link_error_recovery.attr.attr,
569 &port_pma_attr_link_downed.attr.attr,
570 &port_pma_attr_port_rcv_errors.attr.attr,
571 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
572 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
573 &port_pma_attr_port_xmit_discards.attr.attr,
574 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
575 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
576 &port_pma_attr_local_link_integrity_errors.attr.attr,
577 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
578 &port_pma_attr_VL15_dropped.attr.attr,
579 &port_pma_attr_port_xmit_data.attr.attr,
580 &port_pma_attr_port_rcv_data.attr.attr,
581 &port_pma_attr_port_xmit_packets.attr.attr,
582 &port_pma_attr_port_rcv_packets.attr.attr,
583 &port_pma_attr_port_xmit_wait.attr.attr,
584 NULL
585 };
586
587 static struct attribute *pma_attrs_ext[] = {
588 &port_pma_attr_symbol_error.attr.attr,
589 &port_pma_attr_link_error_recovery.attr.attr,
590 &port_pma_attr_link_downed.attr.attr,
591 &port_pma_attr_port_rcv_errors.attr.attr,
592 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
593 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
594 &port_pma_attr_port_xmit_discards.attr.attr,
595 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
596 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
597 &port_pma_attr_local_link_integrity_errors.attr.attr,
598 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
599 &port_pma_attr_VL15_dropped.attr.attr,
600 &port_pma_attr_ext_port_xmit_data.attr.attr,
601 &port_pma_attr_ext_port_rcv_data.attr.attr,
602 &port_pma_attr_ext_port_xmit_packets.attr.attr,
603 &port_pma_attr_port_xmit_wait.attr.attr,
604 &port_pma_attr_ext_port_rcv_packets.attr.attr,
605 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
606 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
607 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
608 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
609 NULL
610 };
611
612 static struct attribute *pma_attrs_noietf[] = {
613 &port_pma_attr_symbol_error.attr.attr,
614 &port_pma_attr_link_error_recovery.attr.attr,
615 &port_pma_attr_link_downed.attr.attr,
616 &port_pma_attr_port_rcv_errors.attr.attr,
617 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
618 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
619 &port_pma_attr_port_xmit_discards.attr.attr,
620 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
621 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
622 &port_pma_attr_local_link_integrity_errors.attr.attr,
623 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
624 &port_pma_attr_VL15_dropped.attr.attr,
625 &port_pma_attr_ext_port_xmit_data.attr.attr,
626 &port_pma_attr_ext_port_rcv_data.attr.attr,
627 &port_pma_attr_ext_port_xmit_packets.attr.attr,
628 &port_pma_attr_ext_port_rcv_packets.attr.attr,
629 &port_pma_attr_port_xmit_wait.attr.attr,
630 NULL
631 };
632
633 static struct attribute_group pma_group = {
634 .name = "counters",
635 .attrs = pma_attrs
636 };
637
638 static struct attribute_group pma_group_ext = {
639 .name = "counters",
640 .attrs = pma_attrs_ext
641 };
642
643 static struct attribute_group pma_group_noietf = {
644 .name = "counters",
645 .attrs = pma_attrs_noietf
646 };
647
648 static void ib_port_release(struct kobject *kobj)
649 {
650 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
651 struct attribute *a;
652 int i;
653
654 if (p->gid_group.attrs) {
655 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
656 kfree(a);
657
658 kfree(p->gid_group.attrs);
659 }
660
661 if (p->pkey_group.attrs) {
662 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
663 kfree(a);
664
665 kfree(p->pkey_group.attrs);
666 }
667
668 kfree(p);
669 }
670
671 static void ib_port_gid_attr_release(struct kobject *kobj)
672 {
673 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
674 kobj);
675 struct attribute *a;
676 int i;
677
678 if (g->ndev.attrs) {
679 for (i = 0; (a = g->ndev.attrs[i]); ++i)
680 kfree(a);
681
682 kfree(g->ndev.attrs);
683 }
684
685 if (g->type.attrs) {
686 for (i = 0; (a = g->type.attrs[i]); ++i)
687 kfree(a);
688
689 kfree(g->type.attrs);
690 }
691
692 kfree(g);
693 }
694
695 static struct kobj_type port_type = {
696 .release = ib_port_release,
697 .sysfs_ops = &port_sysfs_ops,
698 .default_attrs = port_default_attrs
699 };
700
701 static struct kobj_type gid_attr_type = {
702 .sysfs_ops = &gid_attr_sysfs_ops,
703 .release = ib_port_gid_attr_release
704 };
705
706 static struct attribute **
707 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
708 struct port_attribute *, char *buf),
709 int len)
710 {
711 struct attribute **tab_attr;
712 struct port_table_attribute *element;
713 int i;
714
715 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
716 if (!tab_attr)
717 return NULL;
718
719 for (i = 0; i < len; i++) {
720 element = kzalloc(sizeof(struct port_table_attribute),
721 GFP_KERNEL);
722 if (!element)
723 goto err;
724
725 if (snprintf(element->name, sizeof(element->name),
726 "%d", i) >= sizeof(element->name)) {
727 kfree(element);
728 goto err;
729 }
730
731 element->attr.attr.name = element->name;
732 element->attr.attr.mode = S_IRUGO;
733 element->attr.show = show;
734 element->index = i;
735 sysfs_attr_init(&element->attr.attr);
736
737 tab_attr[i] = &element->attr.attr;
738 }
739
740 return tab_attr;
741
742 err:
743 while (--i >= 0)
744 kfree(tab_attr[i]);
745 kfree(tab_attr);
746 return NULL;
747 }
748
749 /*
750 * Figure out which counter table to use depending on
751 * the device capabilities.
752 */
753 static struct attribute_group *get_counter_table(struct ib_device *dev,
754 int port_num)
755 {
756 struct ib_class_port_info cpi;
757
758 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
759 &cpi, 40, sizeof(cpi)) >= 0) {
760 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
761 /* We have extended counters */
762 return &pma_group_ext;
763
764 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
765 /* But not the IETF ones */
766 return &pma_group_noietf;
767 }
768
769 /* Fall back to normal counters */
770 return &pma_group;
771 }
772
773 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
774 u8 port_num, int index)
775 {
776 int ret;
777
778 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
779 return 0;
780 ret = dev->get_hw_stats(dev, stats, port_num, index);
781 if (ret < 0)
782 return ret;
783 if (ret == stats->num_counters)
784 stats->timestamp = jiffies;
785
786 return 0;
787 }
788
789 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf)
790 {
791 return sprintf(buf, "%llu\n", stats->value[index]);
792 }
793
794 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
795 char *buf)
796 {
797 struct ib_device *dev;
798 struct ib_port *port;
799 struct hw_stats_attribute *hsa;
800 struct rdma_hw_stats *stats;
801 int ret;
802
803 hsa = container_of(attr, struct hw_stats_attribute, attr);
804 if (!hsa->port_num) {
805 dev = container_of((struct device *)kobj,
806 struct ib_device, dev);
807 stats = dev->hw_stats;
808 } else {
809 port = container_of(kobj, struct ib_port, kobj);
810 dev = port->ibdev;
811 stats = port->hw_stats;
812 }
813 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
814 if (ret)
815 return ret;
816 return print_hw_stat(stats, hsa->index, buf);
817 }
818
819 static ssize_t show_stats_lifespan(struct kobject *kobj,
820 struct attribute *attr,
821 char *buf)
822 {
823 struct hw_stats_attribute *hsa;
824 int msecs;
825
826 hsa = container_of(attr, struct hw_stats_attribute, attr);
827 if (!hsa->port_num) {
828 struct ib_device *dev = container_of((struct device *)kobj,
829 struct ib_device, dev);
830 msecs = jiffies_to_msecs(dev->hw_stats->lifespan);
831 } else {
832 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
833 msecs = jiffies_to_msecs(p->hw_stats->lifespan);
834 }
835 return sprintf(buf, "%d\n", msecs);
836 }
837
838 static ssize_t set_stats_lifespan(struct kobject *kobj,
839 struct attribute *attr,
840 const char *buf, size_t count)
841 {
842 struct hw_stats_attribute *hsa;
843 int msecs;
844 int jiffies;
845 int ret;
846
847 ret = kstrtoint(buf, 10, &msecs);
848 if (ret)
849 return ret;
850 if (msecs < 0 || msecs > 10000)
851 return -EINVAL;
852 jiffies = msecs_to_jiffies(msecs);
853 hsa = container_of(attr, struct hw_stats_attribute, attr);
854 if (!hsa->port_num) {
855 struct ib_device *dev = container_of((struct device *)kobj,
856 struct ib_device, dev);
857 dev->hw_stats->lifespan = jiffies;
858 } else {
859 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
860 p->hw_stats->lifespan = jiffies;
861 }
862 return count;
863 }
864
865 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
866 {
867 struct attribute **attr;
868
869 sysfs_remove_group(kobj, attr_group);
870
871 for (attr = attr_group->attrs; *attr; attr++)
872 kfree(*attr);
873 kfree(attr_group);
874 }
875
876 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
877 {
878 struct hw_stats_attribute *hsa;
879
880 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
881 if (!hsa)
882 return NULL;
883
884 hsa->attr.name = (char *)name;
885 hsa->attr.mode = S_IRUGO;
886 hsa->show = show_hw_stats;
887 hsa->store = NULL;
888 hsa->index = index;
889 hsa->port_num = port_num;
890
891 return &hsa->attr;
892 }
893
894 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
895 {
896 struct hw_stats_attribute *hsa;
897
898 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
899 if (!hsa)
900 return NULL;
901
902 hsa->attr.name = name;
903 hsa->attr.mode = S_IWUSR | S_IRUGO;
904 hsa->show = show_stats_lifespan;
905 hsa->store = set_stats_lifespan;
906 hsa->index = 0;
907 hsa->port_num = port_num;
908
909 return &hsa->attr;
910 }
911
912 static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
913 u8 port_num)
914 {
915 struct attribute_group *hsag;
916 struct rdma_hw_stats *stats;
917 int i, ret;
918
919 stats = device->alloc_hw_stats(device, port_num);
920
921 if (!stats)
922 return;
923
924 if (!stats->names || stats->num_counters <= 0)
925 goto err_free_stats;
926
927 /*
928 * Two extra attribue elements here, one for the lifespan entry and
929 * one to NULL terminate the list for the sysfs core code
930 */
931 hsag = kzalloc(sizeof(*hsag) +
932 sizeof(void *) * (stats->num_counters + 2),
933 GFP_KERNEL);
934 if (!hsag)
935 goto err_free_stats;
936
937 ret = device->get_hw_stats(device, stats, port_num,
938 stats->num_counters);
939 if (ret != stats->num_counters)
940 goto err_free_hsag;
941
942 stats->timestamp = jiffies;
943
944 hsag->name = "hw_counters";
945 hsag->attrs = (void *)hsag + sizeof(*hsag);
946
947 for (i = 0; i < stats->num_counters; i++) {
948 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
949 if (!hsag->attrs[i])
950 goto err;
951 sysfs_attr_init(hsag->attrs[i]);
952 }
953
954 /* treat an error here as non-fatal */
955 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
956 if (hsag->attrs[i])
957 sysfs_attr_init(hsag->attrs[i]);
958
959 if (port) {
960 struct kobject *kobj = &port->kobj;
961 ret = sysfs_create_group(kobj, hsag);
962 if (ret)
963 goto err;
964 port->hw_stats_ag = hsag;
965 port->hw_stats = stats;
966 } else {
967 struct kobject *kobj = &device->dev.kobj;
968 ret = sysfs_create_group(kobj, hsag);
969 if (ret)
970 goto err;
971 device->hw_stats_ag = hsag;
972 device->hw_stats = stats;
973 }
974
975 return;
976
977 err:
978 for (; i >= 0; i--)
979 kfree(hsag->attrs[i]);
980 err_free_hsag:
981 kfree(hsag);
982 err_free_stats:
983 kfree(stats);
984 return;
985 }
986
987 static int add_port(struct ib_device *device, int port_num,
988 int (*port_callback)(struct ib_device *,
989 u8, struct kobject *))
990 {
991 struct ib_port *p;
992 struct ib_port_attr attr;
993 int i;
994 int ret;
995
996 ret = ib_query_port(device, port_num, &attr);
997 if (ret)
998 return ret;
999
1000 p = kzalloc(sizeof *p, GFP_KERNEL);
1001 if (!p)
1002 return -ENOMEM;
1003
1004 p->ibdev = device;
1005 p->port_num = port_num;
1006
1007 ret = kobject_init_and_add(&p->kobj, &port_type,
1008 device->ports_parent,
1009 "%d", port_num);
1010 if (ret) {
1011 kfree(p);
1012 return ret;
1013 }
1014
1015 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
1016 if (!p->gid_attr_group) {
1017 ret = -ENOMEM;
1018 goto err_put;
1019 }
1020
1021 p->gid_attr_group->port = p;
1022 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1023 &p->kobj, "gid_attrs");
1024 if (ret) {
1025 kfree(p->gid_attr_group);
1026 goto err_put;
1027 }
1028
1029 p->pma_table = get_counter_table(device, port_num);
1030 ret = sysfs_create_group(&p->kobj, p->pma_table);
1031 if (ret)
1032 goto err_put_gid_attrs;
1033
1034 p->gid_group.name = "gids";
1035 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1036 if (!p->gid_group.attrs) {
1037 ret = -ENOMEM;
1038 goto err_remove_pma;
1039 }
1040
1041 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1042 if (ret)
1043 goto err_free_gid;
1044
1045 p->gid_attr_group->ndev.name = "ndevs";
1046 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1047 attr.gid_tbl_len);
1048 if (!p->gid_attr_group->ndev.attrs) {
1049 ret = -ENOMEM;
1050 goto err_remove_gid;
1051 }
1052
1053 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1054 &p->gid_attr_group->ndev);
1055 if (ret)
1056 goto err_free_gid_ndev;
1057
1058 p->gid_attr_group->type.name = "types";
1059 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1060 attr.gid_tbl_len);
1061 if (!p->gid_attr_group->type.attrs) {
1062 ret = -ENOMEM;
1063 goto err_remove_gid_ndev;
1064 }
1065
1066 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1067 &p->gid_attr_group->type);
1068 if (ret)
1069 goto err_free_gid_type;
1070
1071 p->pkey_group.name = "pkeys";
1072 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
1073 attr.pkey_tbl_len);
1074 if (!p->pkey_group.attrs) {
1075 ret = -ENOMEM;
1076 goto err_remove_gid_type;
1077 }
1078
1079 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
1080 if (ret)
1081 goto err_free_pkey;
1082
1083 if (port_callback) {
1084 ret = port_callback(device, port_num, &p->kobj);
1085 if (ret)
1086 goto err_remove_pkey;
1087 }
1088
1089 /*
1090 * If port == 0, it means we have only one port and the parent
1091 * device, not this port device, should be the holder of the
1092 * hw_counters
1093 */
1094 if (device->alloc_hw_stats && port_num)
1095 setup_hw_stats(device, p, port_num);
1096
1097 list_add_tail(&p->kobj.entry, &device->port_list);
1098
1099 kobject_uevent(&p->kobj, KOBJ_ADD);
1100 return 0;
1101
1102 err_remove_pkey:
1103 sysfs_remove_group(&p->kobj, &p->pkey_group);
1104
1105 err_free_pkey:
1106 for (i = 0; i < attr.pkey_tbl_len; ++i)
1107 kfree(p->pkey_group.attrs[i]);
1108
1109 kfree(p->pkey_group.attrs);
1110 p->pkey_group.attrs = NULL;
1111
1112 err_remove_gid_type:
1113 sysfs_remove_group(&p->gid_attr_group->kobj,
1114 &p->gid_attr_group->type);
1115
1116 err_free_gid_type:
1117 for (i = 0; i < attr.gid_tbl_len; ++i)
1118 kfree(p->gid_attr_group->type.attrs[i]);
1119
1120 kfree(p->gid_attr_group->type.attrs);
1121 p->gid_attr_group->type.attrs = NULL;
1122
1123 err_remove_gid_ndev:
1124 sysfs_remove_group(&p->gid_attr_group->kobj,
1125 &p->gid_attr_group->ndev);
1126
1127 err_free_gid_ndev:
1128 for (i = 0; i < attr.gid_tbl_len; ++i)
1129 kfree(p->gid_attr_group->ndev.attrs[i]);
1130
1131 kfree(p->gid_attr_group->ndev.attrs);
1132 p->gid_attr_group->ndev.attrs = NULL;
1133
1134 err_remove_gid:
1135 sysfs_remove_group(&p->kobj, &p->gid_group);
1136
1137 err_free_gid:
1138 for (i = 0; i < attr.gid_tbl_len; ++i)
1139 kfree(p->gid_group.attrs[i]);
1140
1141 kfree(p->gid_group.attrs);
1142 p->gid_group.attrs = NULL;
1143
1144 err_remove_pma:
1145 sysfs_remove_group(&p->kobj, p->pma_table);
1146
1147 err_put_gid_attrs:
1148 kobject_put(&p->gid_attr_group->kobj);
1149
1150 err_put:
1151 kobject_put(&p->kobj);
1152 return ret;
1153 }
1154
1155 static ssize_t show_node_type(struct device *device,
1156 struct device_attribute *attr, char *buf)
1157 {
1158 struct ib_device *dev = container_of(device, struct ib_device, dev);
1159
1160 switch (dev->node_type) {
1161 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
1162 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
1163 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
1164 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1165 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1166 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1167 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1168 }
1169 }
1170
1171 static ssize_t show_sys_image_guid(struct device *device,
1172 struct device_attribute *dev_attr, char *buf)
1173 {
1174 struct ib_device *dev = container_of(device, struct ib_device, dev);
1175
1176 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1177 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1178 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1179 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1180 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1181 }
1182
1183 static ssize_t show_node_guid(struct device *device,
1184 struct device_attribute *attr, char *buf)
1185 {
1186 struct ib_device *dev = container_of(device, struct ib_device, dev);
1187
1188 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1189 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1190 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1191 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1192 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1193 }
1194
1195 static ssize_t show_node_desc(struct device *device,
1196 struct device_attribute *attr, char *buf)
1197 {
1198 struct ib_device *dev = container_of(device, struct ib_device, dev);
1199
1200 return sprintf(buf, "%.64s\n", dev->node_desc);
1201 }
1202
1203 static ssize_t set_node_desc(struct device *device,
1204 struct device_attribute *attr,
1205 const char *buf, size_t count)
1206 {
1207 struct ib_device *dev = container_of(device, struct ib_device, dev);
1208 struct ib_device_modify desc = {};
1209 int ret;
1210
1211 if (!dev->modify_device)
1212 return -EIO;
1213
1214 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1215 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1216 if (ret)
1217 return ret;
1218
1219 return count;
1220 }
1221
1222 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1223 char *buf)
1224 {
1225 struct ib_device *dev = container_of(device, struct ib_device, dev);
1226
1227 ib_get_device_fw_str(dev, buf);
1228 strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX);
1229 return strlen(buf);
1230 }
1231
1232 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
1233 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
1234 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
1235 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
1236 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1237
1238 static struct device_attribute *ib_class_attributes[] = {
1239 &dev_attr_node_type,
1240 &dev_attr_sys_image_guid,
1241 &dev_attr_node_guid,
1242 &dev_attr_node_desc,
1243 &dev_attr_fw_ver,
1244 };
1245
1246 static void free_port_list_attributes(struct ib_device *device)
1247 {
1248 struct kobject *p, *t;
1249
1250 list_for_each_entry_safe(p, t, &device->port_list, entry) {
1251 struct ib_port *port = container_of(p, struct ib_port, kobj);
1252 list_del(&p->entry);
1253 if (port->hw_stats) {
1254 kfree(port->hw_stats);
1255 free_hsag(&port->kobj, port->hw_stats_ag);
1256 }
1257 sysfs_remove_group(p, port->pma_table);
1258 sysfs_remove_group(p, &port->pkey_group);
1259 sysfs_remove_group(p, &port->gid_group);
1260 sysfs_remove_group(&port->gid_attr_group->kobj,
1261 &port->gid_attr_group->ndev);
1262 sysfs_remove_group(&port->gid_attr_group->kobj,
1263 &port->gid_attr_group->type);
1264 kobject_put(&port->gid_attr_group->kobj);
1265 kobject_put(p);
1266 }
1267
1268 kobject_put(device->ports_parent);
1269 }
1270
1271 int ib_device_register_sysfs(struct ib_device *device,
1272 int (*port_callback)(struct ib_device *,
1273 u8, struct kobject *))
1274 {
1275 struct device *class_dev = &device->dev;
1276 int ret;
1277 int i;
1278
1279 ret = dev_set_name(class_dev, "%s", device->name);
1280 if (ret)
1281 return ret;
1282
1283 ret = device_add(class_dev);
1284 if (ret)
1285 goto err;
1286
1287 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
1288 ret = device_create_file(class_dev, ib_class_attributes[i]);
1289 if (ret)
1290 goto err_unregister;
1291 }
1292
1293 device->ports_parent = kobject_create_and_add("ports",
1294 &class_dev->kobj);
1295 if (!device->ports_parent) {
1296 ret = -ENOMEM;
1297 goto err_put;
1298 }
1299
1300 if (rdma_cap_ib_switch(device)) {
1301 ret = add_port(device, 0, port_callback);
1302 if (ret)
1303 goto err_put;
1304 } else {
1305 for (i = 1; i <= device->phys_port_cnt; ++i) {
1306 ret = add_port(device, i, port_callback);
1307 if (ret)
1308 goto err_put;
1309 }
1310 }
1311
1312 if (device->alloc_hw_stats)
1313 setup_hw_stats(device, NULL, 0);
1314
1315 return 0;
1316
1317 err_put:
1318 free_port_list_attributes(device);
1319
1320 err_unregister:
1321 device_del(class_dev);
1322
1323 err:
1324 return ret;
1325 }
1326
1327 void ib_device_unregister_sysfs(struct ib_device *device)
1328 {
1329 int i;
1330
1331 /* Hold kobject until ib_dealloc_device() */
1332 kobject_get(&device->dev.kobj);
1333
1334 free_port_list_attributes(device);
1335
1336 if (device->hw_stats) {
1337 kfree(device->hw_stats);
1338 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1339 }
1340
1341 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
1342 device_remove_file(&device->dev, ib_class_attributes[i]);
1343
1344 device_unregister(&device->dev);
1345 }
CRIS linux kernel tree