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1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#include "core_priv.h"
36
37#include <linux/slab.h>
38#include <linux/stat.h>
39#include <linux/string.h>
40#include <linux/netdevice.h>
41#include <linux/ethtool.h>
42
43#include <rdma/ib_mad.h>
44#include <rdma/ib_pma.h>
45#include <rdma/ib_cache.h>
46#include <rdma/rdma_counter.h>
47#include <rdma/ib_sysfs.h>
48
49struct port_table_attribute {
50 struct ib_port_attribute attr;
51 char name[8];
52 int index;
53 __be16 attr_id;
54};
55
56struct gid_attr_group {
57 struct ib_port *port;
58 struct kobject kobj;
59 struct attribute_group groups[2];
60 const struct attribute_group *groups_list[3];
61 struct port_table_attribute attrs_list[];
62};
63
64struct ib_port {
65 struct kobject kobj;
66 struct ib_device *ibdev;
67 struct gid_attr_group *gid_attr_group;
68 struct hw_stats_port_data *hw_stats_data;
69
70 struct attribute_group groups[3];
71 const struct attribute_group *groups_list[5];
72 u32 port_num;
73 struct port_table_attribute attrs_list[];
74};
75
76struct hw_stats_device_attribute {
77 struct device_attribute attr;
78 ssize_t (*show)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
79 unsigned int index, unsigned int port_num, char *buf);
80 ssize_t (*store)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
81 unsigned int index, unsigned int port_num,
82 const char *buf, size_t count);
83};
84
85struct hw_stats_port_attribute {
86 struct ib_port_attribute attr;
87 ssize_t (*show)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
88 unsigned int index, unsigned int port_num, char *buf);
89 ssize_t (*store)(struct ib_device *ibdev, struct rdma_hw_stats *stats,
90 unsigned int index, unsigned int port_num,
91 const char *buf, size_t count);
92};
93
94struct hw_stats_device_data {
95 struct attribute_group group;
96 struct rdma_hw_stats *stats;
97 struct hw_stats_device_attribute attrs[];
98};
99
100struct hw_stats_port_data {
101 struct rdma_hw_stats *stats;
102 struct hw_stats_port_attribute attrs[];
103};
104
105static ssize_t port_attr_show(struct kobject *kobj,
106 struct attribute *attr, char *buf)
107{
108 struct ib_port_attribute *port_attr =
109 container_of(attr, struct ib_port_attribute, attr);
110 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
111
112 if (!port_attr->show)
113 return -EIO;
114
115 return port_attr->show(p->ibdev, p->port_num, port_attr, buf);
116}
117
118static ssize_t port_attr_store(struct kobject *kobj,
119 struct attribute *attr,
120 const char *buf, size_t count)
121{
122 struct ib_port_attribute *port_attr =
123 container_of(attr, struct ib_port_attribute, attr);
124 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
125
126 if (!port_attr->store)
127 return -EIO;
128 return port_attr->store(p->ibdev, p->port_num, port_attr, buf, count);
129}
130
131struct ib_device *ib_port_sysfs_get_ibdev_kobj(struct kobject *kobj,
132 u32 *port_num)
133{
134 struct ib_port *port = container_of(kobj, struct ib_port, kobj);
135
136 *port_num = port->port_num;
137 return port->ibdev;
138}
139EXPORT_SYMBOL(ib_port_sysfs_get_ibdev_kobj);
140
141static const struct sysfs_ops port_sysfs_ops = {
142 .show = port_attr_show,
143 .store = port_attr_store
144};
145
146static ssize_t hw_stat_device_show(struct device *dev,
147 struct device_attribute *attr, char *buf)
148{
149 struct hw_stats_device_attribute *stat_attr =
150 container_of(attr, struct hw_stats_device_attribute, attr);
151 struct ib_device *ibdev = container_of(dev, struct ib_device, dev);
152
153 return stat_attr->show(ibdev, ibdev->hw_stats_data->stats,
154 stat_attr - ibdev->hw_stats_data->attrs, 0, buf);
155}
156
157static ssize_t hw_stat_device_store(struct device *dev,
158 struct device_attribute *attr,
159 const char *buf, size_t count)
160{
161 struct hw_stats_device_attribute *stat_attr =
162 container_of(attr, struct hw_stats_device_attribute, attr);
163 struct ib_device *ibdev = container_of(dev, struct ib_device, dev);
164
165 return stat_attr->store(ibdev, ibdev->hw_stats_data->stats,
166 stat_attr - ibdev->hw_stats_data->attrs, 0, buf,
167 count);
168}
169
170static ssize_t hw_stat_port_show(struct ib_device *ibdev, u32 port_num,
171 struct ib_port_attribute *attr, char *buf)
172{
173 struct hw_stats_port_attribute *stat_attr =
174 container_of(attr, struct hw_stats_port_attribute, attr);
175 struct ib_port *port = ibdev->port_data[port_num].sysfs;
176
177 return stat_attr->show(ibdev, port->hw_stats_data->stats,
178 stat_attr - port->hw_stats_data->attrs,
179 port->port_num, buf);
180}
181
182static ssize_t hw_stat_port_store(struct ib_device *ibdev, u32 port_num,
183 struct ib_port_attribute *attr,
184 const char *buf, size_t count)
185{
186 struct hw_stats_port_attribute *stat_attr =
187 container_of(attr, struct hw_stats_port_attribute, attr);
188 struct ib_port *port = ibdev->port_data[port_num].sysfs;
189
190 return stat_attr->store(ibdev, port->hw_stats_data->stats,
191 stat_attr - port->hw_stats_data->attrs,
192 port->port_num, buf, count);
193}
194
195static ssize_t gid_attr_show(struct kobject *kobj,
196 struct attribute *attr, char *buf)
197{
198 struct ib_port_attribute *port_attr =
199 container_of(attr, struct ib_port_attribute, attr);
200 struct ib_port *p = container_of(kobj, struct gid_attr_group,
201 kobj)->port;
202
203 if (!port_attr->show)
204 return -EIO;
205
206 return port_attr->show(p->ibdev, p->port_num, port_attr, buf);
207}
208
209static const struct sysfs_ops gid_attr_sysfs_ops = {
210 .show = gid_attr_show
211};
212
213static ssize_t state_show(struct ib_device *ibdev, u32 port_num,
214 struct ib_port_attribute *unused, char *buf)
215{
216 struct ib_port_attr attr;
217 ssize_t ret;
218
219 static const char *state_name[] = {
220 [IB_PORT_NOP] = "NOP",
221 [IB_PORT_DOWN] = "DOWN",
222 [IB_PORT_INIT] = "INIT",
223 [IB_PORT_ARMED] = "ARMED",
224 [IB_PORT_ACTIVE] = "ACTIVE",
225 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
226 };
227
228 ret = ib_query_port(ibdev, port_num, &attr);
229 if (ret)
230 return ret;
231
232 return sysfs_emit(buf, "%d: %s\n", attr.state,
233 attr.state >= 0 &&
234 attr.state < ARRAY_SIZE(state_name) ?
235 state_name[attr.state] :
236 "UNKNOWN");
237}
238
239static ssize_t lid_show(struct ib_device *ibdev, u32 port_num,
240 struct ib_port_attribute *unused, char *buf)
241{
242 struct ib_port_attr attr;
243 ssize_t ret;
244
245 ret = ib_query_port(ibdev, port_num, &attr);
246 if (ret)
247 return ret;
248
249 return sysfs_emit(buf, "0x%x\n", attr.lid);
250}
251
252static ssize_t lid_mask_count_show(struct ib_device *ibdev, u32 port_num,
253 struct ib_port_attribute *unused, char *buf)
254{
255 struct ib_port_attr attr;
256 ssize_t ret;
257
258 ret = ib_query_port(ibdev, port_num, &attr);
259 if (ret)
260 return ret;
261
262 return sysfs_emit(buf, "%u\n", attr.lmc);
263}
264
265static ssize_t sm_lid_show(struct ib_device *ibdev, u32 port_num,
266 struct ib_port_attribute *unused, char *buf)
267{
268 struct ib_port_attr attr;
269 ssize_t ret;
270
271 ret = ib_query_port(ibdev, port_num, &attr);
272 if (ret)
273 return ret;
274
275 return sysfs_emit(buf, "0x%x\n", attr.sm_lid);
276}
277
278static ssize_t sm_sl_show(struct ib_device *ibdev, u32 port_num,
279 struct ib_port_attribute *unused, char *buf)
280{
281 struct ib_port_attr attr;
282 ssize_t ret;
283
284 ret = ib_query_port(ibdev, port_num, &attr);
285 if (ret)
286 return ret;
287
288 return sysfs_emit(buf, "%u\n", attr.sm_sl);
289}
290
291static ssize_t cap_mask_show(struct ib_device *ibdev, u32 port_num,
292 struct ib_port_attribute *unused, char *buf)
293{
294 struct ib_port_attr attr;
295 ssize_t ret;
296
297 ret = ib_query_port(ibdev, port_num, &attr);
298 if (ret)
299 return ret;
300
301 return sysfs_emit(buf, "0x%08x\n", attr.port_cap_flags);
302}
303
304static ssize_t rate_show(struct ib_device *ibdev, u32 port_num,
305 struct ib_port_attribute *unused, char *buf)
306{
307 struct ib_port_attr attr;
308 char *speed = "";
309 int rate; /* in deci-Gb/sec */
310 ssize_t ret;
311
312 ret = ib_query_port(ibdev, port_num, &attr);
313 if (ret)
314 return ret;
315
316 switch (attr.active_speed) {
317 case IB_SPEED_DDR:
318 speed = " DDR";
319 rate = 50;
320 break;
321 case IB_SPEED_QDR:
322 speed = " QDR";
323 rate = 100;
324 break;
325 case IB_SPEED_FDR10:
326 speed = " FDR10";
327 rate = 100;
328 break;
329 case IB_SPEED_FDR:
330 speed = " FDR";
331 rate = 140;
332 break;
333 case IB_SPEED_EDR:
334 speed = " EDR";
335 rate = 250;
336 break;
337 case IB_SPEED_HDR:
338 speed = " HDR";
339 rate = 500;
340 break;
341 case IB_SPEED_NDR:
342 speed = " NDR";
343 rate = 1000;
344 break;
345 case IB_SPEED_XDR:
346 speed = " XDR";
347 rate = 2000;
348 break;
349 case IB_SPEED_SDR:
350 default: /* default to SDR for invalid rates */
351 speed = " SDR";
352 rate = 25;
353 break;
354 }
355
356 rate *= ib_width_enum_to_int(attr.active_width);
357 if (rate < 0)
358 return -EINVAL;
359
360 return sysfs_emit(buf, "%d%s Gb/sec (%dX%s)\n", rate / 10,
361 rate % 10 ? ".5" : "",
362 ib_width_enum_to_int(attr.active_width), speed);
363}
364
365static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
366{
367 static const char *phys_state_str[] = {
368 "<unknown>",
369 "Sleep",
370 "Polling",
371 "Disabled",
372 "PortConfigurationTraining",
373 "LinkUp",
374 "LinkErrorRecovery",
375 "Phy Test",
376 };
377
378 if (phys_state < ARRAY_SIZE(phys_state_str))
379 return phys_state_str[phys_state];
380 return "<unknown>";
381}
382
383static ssize_t phys_state_show(struct ib_device *ibdev, u32 port_num,
384 struct ib_port_attribute *unused, char *buf)
385{
386 struct ib_port_attr attr;
387
388 ssize_t ret;
389
390 ret = ib_query_port(ibdev, port_num, &attr);
391 if (ret)
392 return ret;
393
394 return sysfs_emit(buf, "%u: %s\n", attr.phys_state,
395 phys_state_to_str(attr.phys_state));
396}
397
398static ssize_t link_layer_show(struct ib_device *ibdev, u32 port_num,
399 struct ib_port_attribute *unused, char *buf)
400{
401 const char *output;
402
403 switch (rdma_port_get_link_layer(ibdev, port_num)) {
404 case IB_LINK_LAYER_INFINIBAND:
405 output = "InfiniBand";
406 break;
407 case IB_LINK_LAYER_ETHERNET:
408 output = "Ethernet";
409 break;
410 default:
411 output = "Unknown";
412 break;
413 }
414
415 return sysfs_emit(buf, "%s\n", output);
416}
417
418static IB_PORT_ATTR_RO(state);
419static IB_PORT_ATTR_RO(lid);
420static IB_PORT_ATTR_RO(lid_mask_count);
421static IB_PORT_ATTR_RO(sm_lid);
422static IB_PORT_ATTR_RO(sm_sl);
423static IB_PORT_ATTR_RO(cap_mask);
424static IB_PORT_ATTR_RO(rate);
425static IB_PORT_ATTR_RO(phys_state);
426static IB_PORT_ATTR_RO(link_layer);
427
428static struct attribute *port_default_attrs[] = {
429 &ib_port_attr_state.attr,
430 &ib_port_attr_lid.attr,
431 &ib_port_attr_lid_mask_count.attr,
432 &ib_port_attr_sm_lid.attr,
433 &ib_port_attr_sm_sl.attr,
434 &ib_port_attr_cap_mask.attr,
435 &ib_port_attr_rate.attr,
436 &ib_port_attr_phys_state.attr,
437 &ib_port_attr_link_layer.attr,
438 NULL
439};
440ATTRIBUTE_GROUPS(port_default);
441
442static ssize_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf)
443{
444 struct net_device *ndev;
445 int ret = -EINVAL;
446
447 rcu_read_lock();
448 ndev = rcu_dereference(gid_attr->ndev);
449 if (ndev)
450 ret = sysfs_emit(buf, "%s\n", ndev->name);
451 rcu_read_unlock();
452 return ret;
453}
454
455static ssize_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
456{
457 return sysfs_emit(buf, "%s\n",
458 ib_cache_gid_type_str(gid_attr->gid_type));
459}
460
461static ssize_t _show_port_gid_attr(
462 struct ib_device *ibdev, u32 port_num, struct ib_port_attribute *attr,
463 char *buf,
464 ssize_t (*print)(const struct ib_gid_attr *gid_attr, char *buf))
465{
466 struct port_table_attribute *tab_attr =
467 container_of(attr, struct port_table_attribute, attr);
468 const struct ib_gid_attr *gid_attr;
469 ssize_t ret;
470
471 gid_attr = rdma_get_gid_attr(ibdev, port_num, tab_attr->index);
472 if (IS_ERR(gid_attr))
473 /* -EINVAL is returned for user space compatibility reasons. */
474 return -EINVAL;
475
476 ret = print(gid_attr, buf);
477 rdma_put_gid_attr(gid_attr);
478 return ret;
479}
480
481static ssize_t show_port_gid(struct ib_device *ibdev, u32 port_num,
482 struct ib_port_attribute *attr, char *buf)
483{
484 struct port_table_attribute *tab_attr =
485 container_of(attr, struct port_table_attribute, attr);
486 const struct ib_gid_attr *gid_attr;
487 int len;
488
489 gid_attr = rdma_get_gid_attr(ibdev, port_num, tab_attr->index);
490 if (IS_ERR(gid_attr)) {
491 const union ib_gid zgid = {};
492
493 /* If reading GID fails, it is likely due to GID entry being
494 * empty (invalid) or reserved GID in the table. User space
495 * expects to read GID table entries as long as it given index
496 * is within GID table size. Administrative/debugging tool
497 * fails to query rest of the GID entries if it hits error
498 * while querying a GID of the given index. To avoid user
499 * space throwing such error on fail to read gid, return zero
500 * GID as before. This maintains backward compatibility.
501 */
502 return sysfs_emit(buf, "%pI6\n", zgid.raw);
503 }
504
505 len = sysfs_emit(buf, "%pI6\n", gid_attr->gid.raw);
506 rdma_put_gid_attr(gid_attr);
507 return len;
508}
509
510static ssize_t show_port_gid_attr_ndev(struct ib_device *ibdev, u32 port_num,
511 struct ib_port_attribute *attr,
512 char *buf)
513{
514 return _show_port_gid_attr(ibdev, port_num, attr, buf, print_ndev);
515}
516
517static ssize_t show_port_gid_attr_gid_type(struct ib_device *ibdev,
518 u32 port_num,
519 struct ib_port_attribute *attr,
520 char *buf)
521{
522 return _show_port_gid_attr(ibdev, port_num, attr, buf, print_gid_type);
523}
524
525static ssize_t show_port_pkey(struct ib_device *ibdev, u32 port_num,
526 struct ib_port_attribute *attr, char *buf)
527{
528 struct port_table_attribute *tab_attr =
529 container_of(attr, struct port_table_attribute, attr);
530 u16 pkey;
531 int ret;
532
533 ret = ib_query_pkey(ibdev, port_num, tab_attr->index, &pkey);
534 if (ret)
535 return ret;
536
537 return sysfs_emit(buf, "0x%04x\n", pkey);
538}
539
540#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
541struct port_table_attribute port_pma_attr_##_name = { \
542 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
543 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
544 .attr_id = IB_PMA_PORT_COUNTERS, \
545}
546
547#define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
548struct port_table_attribute port_pma_attr_ext_##_name = { \
549 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
550 .index = (_offset) | ((_width) << 16), \
551 .attr_id = IB_PMA_PORT_COUNTERS_EXT, \
552}
553
554/*
555 * Get a Perfmgmt MAD block of data.
556 * Returns error code or the number of bytes retrieved.
557 */
558static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
559 void *data, int offset, size_t size)
560{
561 struct ib_mad *in_mad;
562 struct ib_mad *out_mad;
563 size_t mad_size = sizeof(*out_mad);
564 u16 out_mad_pkey_index = 0;
565 ssize_t ret;
566
567 if (!dev->ops.process_mad)
568 return -ENOSYS;
569
570 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
571 out_mad = kzalloc(sizeof(*out_mad), GFP_KERNEL);
572 if (!in_mad || !out_mad) {
573 ret = -ENOMEM;
574 goto out;
575 }
576
577 in_mad->mad_hdr.base_version = 1;
578 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
579 in_mad->mad_hdr.class_version = 1;
580 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
581 in_mad->mad_hdr.attr_id = attr;
582
583 if (attr != IB_PMA_CLASS_PORT_INFO)
584 in_mad->data[41] = port_num; /* PortSelect field */
585
586 if ((dev->ops.process_mad(dev, IB_MAD_IGNORE_MKEY, port_num, NULL, NULL,
587 in_mad, out_mad, &mad_size,
588 &out_mad_pkey_index) &
589 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
590 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
591 ret = -EINVAL;
592 goto out;
593 }
594 memcpy(data, out_mad->data + offset, size);
595 ret = size;
596out:
597 kfree(in_mad);
598 kfree(out_mad);
599 return ret;
600}
601
602static ssize_t show_pma_counter(struct ib_device *ibdev, u32 port_num,
603 struct ib_port_attribute *attr, char *buf)
604{
605 struct port_table_attribute *tab_attr =
606 container_of(attr, struct port_table_attribute, attr);
607 int offset = tab_attr->index & 0xffff;
608 int width = (tab_attr->index >> 16) & 0xff;
609 int ret;
610 u8 data[8];
611 int len;
612
613 ret = get_perf_mad(ibdev, port_num, tab_attr->attr_id, &data,
614 40 + offset / 8, sizeof(data));
615 if (ret < 0)
616 return ret;
617
618 switch (width) {
619 case 4:
620 len = sysfs_emit(buf, "%d\n",
621 (*data >> (4 - (offset % 8))) & 0xf);
622 break;
623 case 8:
624 len = sysfs_emit(buf, "%u\n", *data);
625 break;
626 case 16:
627 len = sysfs_emit(buf, "%u\n", be16_to_cpup((__be16 *)data));
628 break;
629 case 32:
630 len = sysfs_emit(buf, "%u\n", be32_to_cpup((__be32 *)data));
631 break;
632 case 64:
633 len = sysfs_emit(buf, "%llu\n", be64_to_cpup((__be64 *)data));
634 break;
635 default:
636 len = 0;
637 break;
638 }
639
640 return len;
641}
642
643static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
644static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
645static PORT_PMA_ATTR(link_downed , 2, 8, 56);
646static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
647static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
648static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
649static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
650static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
651static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
652static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
653static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
654static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
655static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
656static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
657static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
658static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
659static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
660
661/*
662 * Counters added by extended set
663 */
664static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
665static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
666static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
667static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
668static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
669static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
670static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
671static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
672
673static struct attribute *pma_attrs[] = {
674 &port_pma_attr_symbol_error.attr.attr,
675 &port_pma_attr_link_error_recovery.attr.attr,
676 &port_pma_attr_link_downed.attr.attr,
677 &port_pma_attr_port_rcv_errors.attr.attr,
678 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
679 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
680 &port_pma_attr_port_xmit_discards.attr.attr,
681 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
682 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
683 &port_pma_attr_local_link_integrity_errors.attr.attr,
684 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
685 &port_pma_attr_VL15_dropped.attr.attr,
686 &port_pma_attr_port_xmit_data.attr.attr,
687 &port_pma_attr_port_rcv_data.attr.attr,
688 &port_pma_attr_port_xmit_packets.attr.attr,
689 &port_pma_attr_port_rcv_packets.attr.attr,
690 &port_pma_attr_port_xmit_wait.attr.attr,
691 NULL
692};
693
694static struct attribute *pma_attrs_ext[] = {
695 &port_pma_attr_symbol_error.attr.attr,
696 &port_pma_attr_link_error_recovery.attr.attr,
697 &port_pma_attr_link_downed.attr.attr,
698 &port_pma_attr_port_rcv_errors.attr.attr,
699 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
700 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
701 &port_pma_attr_port_xmit_discards.attr.attr,
702 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
703 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
704 &port_pma_attr_local_link_integrity_errors.attr.attr,
705 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
706 &port_pma_attr_VL15_dropped.attr.attr,
707 &port_pma_attr_ext_port_xmit_data.attr.attr,
708 &port_pma_attr_ext_port_rcv_data.attr.attr,
709 &port_pma_attr_ext_port_xmit_packets.attr.attr,
710 &port_pma_attr_port_xmit_wait.attr.attr,
711 &port_pma_attr_ext_port_rcv_packets.attr.attr,
712 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
713 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
714 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
715 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
716 NULL
717};
718
719static struct attribute *pma_attrs_noietf[] = {
720 &port_pma_attr_symbol_error.attr.attr,
721 &port_pma_attr_link_error_recovery.attr.attr,
722 &port_pma_attr_link_downed.attr.attr,
723 &port_pma_attr_port_rcv_errors.attr.attr,
724 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
725 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
726 &port_pma_attr_port_xmit_discards.attr.attr,
727 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
728 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
729 &port_pma_attr_local_link_integrity_errors.attr.attr,
730 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
731 &port_pma_attr_VL15_dropped.attr.attr,
732 &port_pma_attr_ext_port_xmit_data.attr.attr,
733 &port_pma_attr_ext_port_rcv_data.attr.attr,
734 &port_pma_attr_ext_port_xmit_packets.attr.attr,
735 &port_pma_attr_ext_port_rcv_packets.attr.attr,
736 &port_pma_attr_port_xmit_wait.attr.attr,
737 NULL
738};
739
740static const struct attribute_group pma_group = {
741 .name = "counters",
742 .attrs = pma_attrs
743};
744
745static const struct attribute_group pma_group_ext = {
746 .name = "counters",
747 .attrs = pma_attrs_ext
748};
749
750static const struct attribute_group pma_group_noietf = {
751 .name = "counters",
752 .attrs = pma_attrs_noietf
753};
754
755static void ib_port_release(struct kobject *kobj)
756{
757 struct ib_port *port = container_of(kobj, struct ib_port, kobj);
758 int i;
759
760 for (i = 0; i != ARRAY_SIZE(port->groups); i++)
761 kfree(port->groups[i].attrs);
762 if (port->hw_stats_data)
763 rdma_free_hw_stats_struct(port->hw_stats_data->stats);
764 kfree(port->hw_stats_data);
765 kvfree(port);
766}
767
768static void ib_port_gid_attr_release(struct kobject *kobj)
769{
770 struct gid_attr_group *gid_attr_group =
771 container_of(kobj, struct gid_attr_group, kobj);
772 int i;
773
774 for (i = 0; i != ARRAY_SIZE(gid_attr_group->groups); i++)
775 kfree(gid_attr_group->groups[i].attrs);
776 kfree(gid_attr_group);
777}
778
779static struct kobj_type port_type = {
780 .release = ib_port_release,
781 .sysfs_ops = &port_sysfs_ops,
782 .default_groups = port_default_groups,
783};
784
785static struct kobj_type gid_attr_type = {
786 .sysfs_ops = &gid_attr_sysfs_ops,
787 .release = ib_port_gid_attr_release
788};
789
790/*
791 * Figure out which counter table to use depending on
792 * the device capabilities.
793 */
794static 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
814static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
815 u32 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
830static 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
838static ssize_t show_hw_stats(struct ib_device *ibdev,
839 struct rdma_hw_stats *stats, unsigned int index,
840 unsigned int port_num, char *buf)
841{
842 int ret;
843
844 mutex_lock(&stats->lock);
845 ret = update_hw_stats(ibdev, stats, port_num, index);
846 if (ret)
847 goto unlock;
848 ret = print_hw_stat(ibdev, port_num, stats, index, buf);
849unlock:
850 mutex_unlock(&stats->lock);
851
852 return ret;
853}
854
855static ssize_t show_stats_lifespan(struct ib_device *ibdev,
856 struct rdma_hw_stats *stats,
857 unsigned int index, unsigned int port_num,
858 char *buf)
859{
860 int msecs;
861
862 mutex_lock(&stats->lock);
863 msecs = jiffies_to_msecs(stats->lifespan);
864 mutex_unlock(&stats->lock);
865
866 return sysfs_emit(buf, "%d\n", msecs);
867}
868
869static ssize_t set_stats_lifespan(struct ib_device *ibdev,
870 struct rdma_hw_stats *stats,
871 unsigned int index, unsigned int port_num,
872 const char *buf, size_t count)
873{
874 int msecs;
875 int jiffies;
876 int ret;
877
878 ret = kstrtoint(buf, 10, &msecs);
879 if (ret)
880 return ret;
881 if (msecs < 0 || msecs > 10000)
882 return -EINVAL;
883 jiffies = msecs_to_jiffies(msecs);
884
885 mutex_lock(&stats->lock);
886 stats->lifespan = jiffies;
887 mutex_unlock(&stats->lock);
888
889 return count;
890}
891
892static struct hw_stats_device_data *
893alloc_hw_stats_device(struct ib_device *ibdev)
894{
895 struct hw_stats_device_data *data;
896 struct rdma_hw_stats *stats;
897
898 if (!ibdev->ops.alloc_hw_device_stats)
899 return ERR_PTR(-EOPNOTSUPP);
900 stats = ibdev->ops.alloc_hw_device_stats(ibdev);
901 if (!stats)
902 return ERR_PTR(-ENOMEM);
903 if (!stats->descs || stats->num_counters <= 0)
904 goto err_free_stats;
905
906 /*
907 * Two extra attribue elements here, one for the lifespan entry and
908 * one to NULL terminate the list for the sysfs core code
909 */
910 data = kzalloc(struct_size(data, attrs, size_add(stats->num_counters, 1)),
911 GFP_KERNEL);
912 if (!data)
913 goto err_free_stats;
914 data->group.attrs = kcalloc(stats->num_counters + 2,
915 sizeof(*data->group.attrs), GFP_KERNEL);
916 if (!data->group.attrs)
917 goto err_free_data;
918
919 data->group.name = "hw_counters";
920 data->stats = stats;
921 return data;
922
923err_free_data:
924 kfree(data);
925err_free_stats:
926 rdma_free_hw_stats_struct(stats);
927 return ERR_PTR(-ENOMEM);
928}
929
930void ib_device_release_hw_stats(struct hw_stats_device_data *data)
931{
932 kfree(data->group.attrs);
933 rdma_free_hw_stats_struct(data->stats);
934 kfree(data);
935}
936
937int ib_setup_device_attrs(struct ib_device *ibdev)
938{
939 struct hw_stats_device_attribute *attr;
940 struct hw_stats_device_data *data;
941 bool opstat_skipped = false;
942 int i, ret, pos = 0;
943
944 data = alloc_hw_stats_device(ibdev);
945 if (IS_ERR(data)) {
946 if (PTR_ERR(data) == -EOPNOTSUPP)
947 return 0;
948 return PTR_ERR(data);
949 }
950 ibdev->hw_stats_data = data;
951
952 ret = ibdev->ops.get_hw_stats(ibdev, data->stats, 0,
953 data->stats->num_counters);
954 if (ret != data->stats->num_counters) {
955 if (WARN_ON(ret >= 0))
956 return -EINVAL;
957 return ret;
958 }
959
960 data->stats->timestamp = jiffies;
961
962 for (i = 0; i < data->stats->num_counters; i++) {
963 if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) {
964 opstat_skipped = true;
965 continue;
966 }
967
968 WARN_ON(opstat_skipped);
969 attr = &data->attrs[pos];
970 sysfs_attr_init(&attr->attr.attr);
971 attr->attr.attr.name = data->stats->descs[i].name;
972 attr->attr.attr.mode = 0444;
973 attr->attr.show = hw_stat_device_show;
974 attr->show = show_hw_stats;
975 data->group.attrs[pos] = &attr->attr.attr;
976 pos++;
977 }
978
979 attr = &data->attrs[pos];
980 sysfs_attr_init(&attr->attr.attr);
981 attr->attr.attr.name = "lifespan";
982 attr->attr.attr.mode = 0644;
983 attr->attr.show = hw_stat_device_show;
984 attr->show = show_stats_lifespan;
985 attr->attr.store = hw_stat_device_store;
986 attr->store = set_stats_lifespan;
987 data->group.attrs[pos] = &attr->attr.attr;
988 for (i = 0; i != ARRAY_SIZE(ibdev->groups); i++)
989 if (!ibdev->groups[i]) {
990 ibdev->groups[i] = &data->group;
991 return 0;
992 }
993 WARN(true, "struct ib_device->groups is too small");
994 return -EINVAL;
995}
996
997static struct hw_stats_port_data *
998alloc_hw_stats_port(struct ib_port *port, struct attribute_group *group)
999{
1000 struct ib_device *ibdev = port->ibdev;
1001 struct hw_stats_port_data *data;
1002 struct rdma_hw_stats *stats;
1003
1004 if (!ibdev->ops.alloc_hw_port_stats)
1005 return ERR_PTR(-EOPNOTSUPP);
1006 stats = ibdev->ops.alloc_hw_port_stats(port->ibdev, port->port_num);
1007 if (!stats)
1008 return ERR_PTR(-ENOMEM);
1009 if (!stats->descs || stats->num_counters <= 0)
1010 goto err_free_stats;
1011
1012 /*
1013 * Two extra attribue elements here, one for the lifespan entry and
1014 * one to NULL terminate the list for the sysfs core code
1015 */
1016 data = kzalloc(struct_size(data, attrs, size_add(stats->num_counters, 1)),
1017 GFP_KERNEL);
1018 if (!data)
1019 goto err_free_stats;
1020 group->attrs = kcalloc(stats->num_counters + 2,
1021 sizeof(*group->attrs), GFP_KERNEL);
1022 if (!group->attrs)
1023 goto err_free_data;
1024
1025 group->name = "hw_counters";
1026 data->stats = stats;
1027 return data;
1028
1029err_free_data:
1030 kfree(data);
1031err_free_stats:
1032 rdma_free_hw_stats_struct(stats);
1033 return ERR_PTR(-ENOMEM);
1034}
1035
1036static int setup_hw_port_stats(struct ib_port *port,
1037 struct attribute_group *group)
1038{
1039 struct hw_stats_port_attribute *attr;
1040 struct hw_stats_port_data *data;
1041 bool opstat_skipped = false;
1042 int i, ret, pos = 0;
1043
1044 data = alloc_hw_stats_port(port, group);
1045 if (IS_ERR(data))
1046 return PTR_ERR(data);
1047
1048 ret = port->ibdev->ops.get_hw_stats(port->ibdev, data->stats,
1049 port->port_num,
1050 data->stats->num_counters);
1051 if (ret != data->stats->num_counters) {
1052 if (WARN_ON(ret >= 0))
1053 return -EINVAL;
1054 return ret;
1055 }
1056
1057 data->stats->timestamp = jiffies;
1058
1059 for (i = 0; i < data->stats->num_counters; i++) {
1060 if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) {
1061 opstat_skipped = true;
1062 continue;
1063 }
1064
1065 WARN_ON(opstat_skipped);
1066 attr = &data->attrs[pos];
1067 sysfs_attr_init(&attr->attr.attr);
1068 attr->attr.attr.name = data->stats->descs[i].name;
1069 attr->attr.attr.mode = 0444;
1070 attr->attr.show = hw_stat_port_show;
1071 attr->show = show_hw_stats;
1072 group->attrs[pos] = &attr->attr.attr;
1073 pos++;
1074 }
1075
1076 attr = &data->attrs[pos];
1077 sysfs_attr_init(&attr->attr.attr);
1078 attr->attr.attr.name = "lifespan";
1079 attr->attr.attr.mode = 0644;
1080 attr->attr.show = hw_stat_port_show;
1081 attr->show = show_stats_lifespan;
1082 attr->attr.store = hw_stat_port_store;
1083 attr->store = set_stats_lifespan;
1084 group->attrs[pos] = &attr->attr.attr;
1085
1086 port->hw_stats_data = data;
1087 return 0;
1088}
1089
1090struct rdma_hw_stats *ib_get_hw_stats_port(struct ib_device *ibdev,
1091 u32 port_num)
1092{
1093 if (!ibdev->port_data || !rdma_is_port_valid(ibdev, port_num) ||
1094 !ibdev->port_data[port_num].sysfs->hw_stats_data)
1095 return NULL;
1096 return ibdev->port_data[port_num].sysfs->hw_stats_data->stats;
1097}
1098
1099static int
1100alloc_port_table_group(const char *name, struct attribute_group *group,
1101 struct port_table_attribute *attrs, size_t num,
1102 ssize_t (*show)(struct ib_device *ibdev, u32 port_num,
1103 struct ib_port_attribute *, char *buf))
1104{
1105 struct attribute **attr_list;
1106 int i;
1107
1108 attr_list = kcalloc(num + 1, sizeof(*attr_list), GFP_KERNEL);
1109 if (!attr_list)
1110 return -ENOMEM;
1111
1112 for (i = 0; i < num; i++) {
1113 struct port_table_attribute *element = &attrs[i];
1114
1115 if (snprintf(element->name, sizeof(element->name), "%d", i) >=
1116 sizeof(element->name))
1117 goto err;
1118
1119 sysfs_attr_init(&element->attr.attr);
1120 element->attr.attr.name = element->name;
1121 element->attr.attr.mode = 0444;
1122 element->attr.show = show;
1123 element->index = i;
1124
1125 attr_list[i] = &element->attr.attr;
1126 }
1127 group->name = name;
1128 group->attrs = attr_list;
1129 return 0;
1130err:
1131 kfree(attr_list);
1132 return -EINVAL;
1133}
1134
1135/*
1136 * Create the sysfs:
1137 * ibp0s9/ports/XX/gid_attrs/{ndevs,types}/YYY
1138 * YYY is the gid table index in decimal
1139 */
1140static int setup_gid_attrs(struct ib_port *port,
1141 const struct ib_port_attr *attr)
1142{
1143 struct gid_attr_group *gid_attr_group;
1144 int ret;
1145
1146 gid_attr_group = kzalloc(struct_size(gid_attr_group, attrs_list,
1147 size_mul(attr->gid_tbl_len, 2)),
1148 GFP_KERNEL);
1149 if (!gid_attr_group)
1150 return -ENOMEM;
1151 gid_attr_group->port = port;
1152 kobject_init(&gid_attr_group->kobj, &gid_attr_type);
1153
1154 ret = alloc_port_table_group("ndevs", &gid_attr_group->groups[0],
1155 gid_attr_group->attrs_list,
1156 attr->gid_tbl_len,
1157 show_port_gid_attr_ndev);
1158 if (ret)
1159 goto err_put;
1160 gid_attr_group->groups_list[0] = &gid_attr_group->groups[0];
1161
1162 ret = alloc_port_table_group(
1163 "types", &gid_attr_group->groups[1],
1164 gid_attr_group->attrs_list + attr->gid_tbl_len,
1165 attr->gid_tbl_len, show_port_gid_attr_gid_type);
1166 if (ret)
1167 goto err_put;
1168 gid_attr_group->groups_list[1] = &gid_attr_group->groups[1];
1169
1170 ret = kobject_add(&gid_attr_group->kobj, &port->kobj, "gid_attrs");
1171 if (ret)
1172 goto err_put;
1173 ret = sysfs_create_groups(&gid_attr_group->kobj,
1174 gid_attr_group->groups_list);
1175 if (ret)
1176 goto err_del;
1177 port->gid_attr_group = gid_attr_group;
1178 return 0;
1179
1180err_del:
1181 kobject_del(&gid_attr_group->kobj);
1182err_put:
1183 kobject_put(&gid_attr_group->kobj);
1184 return ret;
1185}
1186
1187static void destroy_gid_attrs(struct ib_port *port)
1188{
1189 struct gid_attr_group *gid_attr_group = port->gid_attr_group;
1190
1191 if (!gid_attr_group)
1192 return;
1193 sysfs_remove_groups(&gid_attr_group->kobj, gid_attr_group->groups_list);
1194 kobject_del(&gid_attr_group->kobj);
1195 kobject_put(&gid_attr_group->kobj);
1196}
1197
1198/*
1199 * Create the sysfs:
1200 * ibp0s9/ports/XX/{gids,pkeys,counters}/YYY
1201 */
1202static struct ib_port *setup_port(struct ib_core_device *coredev, int port_num,
1203 const struct ib_port_attr *attr)
1204{
1205 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1206 bool is_full_dev = &device->coredev == coredev;
1207 const struct attribute_group **cur_group;
1208 struct ib_port *p;
1209 int ret;
1210
1211 p = kvzalloc(struct_size(p, attrs_list,
1212 size_add(attr->gid_tbl_len, attr->pkey_tbl_len)),
1213 GFP_KERNEL);
1214 if (!p)
1215 return ERR_PTR(-ENOMEM);
1216 p->ibdev = device;
1217 p->port_num = port_num;
1218 kobject_init(&p->kobj, &port_type);
1219
1220 if (device->port_data && is_full_dev)
1221 device->port_data[port_num].sysfs = p;
1222
1223 cur_group = p->groups_list;
1224 ret = alloc_port_table_group("gids", &p->groups[0], p->attrs_list,
1225 attr->gid_tbl_len, show_port_gid);
1226 if (ret)
1227 goto err_put;
1228 *cur_group++ = &p->groups[0];
1229
1230 if (attr->pkey_tbl_len) {
1231 ret = alloc_port_table_group("pkeys", &p->groups[1],
1232 p->attrs_list + attr->gid_tbl_len,
1233 attr->pkey_tbl_len, show_port_pkey);
1234 if (ret)
1235 goto err_put;
1236 *cur_group++ = &p->groups[1];
1237 }
1238
1239 /*
1240 * If port == 0, it means hw_counters are per device and not per
1241 * port, so holder should be device. Therefore skip per port
1242 * counter initialization.
1243 */
1244 if (port_num && is_full_dev) {
1245 ret = setup_hw_port_stats(p, &p->groups[2]);
1246 if (ret && ret != -EOPNOTSUPP)
1247 goto err_put;
1248 if (!ret)
1249 *cur_group++ = &p->groups[2];
1250 }
1251
1252 if (device->ops.process_mad && is_full_dev)
1253 *cur_group++ = get_counter_table(device, port_num);
1254
1255 ret = kobject_add(&p->kobj, coredev->ports_kobj, "%d", port_num);
1256 if (ret)
1257 goto err_put;
1258 ret = sysfs_create_groups(&p->kobj, p->groups_list);
1259 if (ret)
1260 goto err_del;
1261 if (is_full_dev) {
1262 ret = sysfs_create_groups(&p->kobj, device->ops.port_groups);
1263 if (ret)
1264 goto err_groups;
1265 }
1266
1267 list_add_tail(&p->kobj.entry, &coredev->port_list);
1268 return p;
1269
1270err_groups:
1271 sysfs_remove_groups(&p->kobj, p->groups_list);
1272err_del:
1273 kobject_del(&p->kobj);
1274err_put:
1275 if (device->port_data && is_full_dev)
1276 device->port_data[port_num].sysfs = NULL;
1277 kobject_put(&p->kobj);
1278 return ERR_PTR(ret);
1279}
1280
1281static void destroy_port(struct ib_core_device *coredev, struct ib_port *port)
1282{
1283 bool is_full_dev = &port->ibdev->coredev == coredev;
1284
1285 list_del(&port->kobj.entry);
1286 if (is_full_dev)
1287 sysfs_remove_groups(&port->kobj, port->ibdev->ops.port_groups);
1288
1289 sysfs_remove_groups(&port->kobj, port->groups_list);
1290 kobject_del(&port->kobj);
1291
1292 if (port->ibdev->port_data &&
1293 port->ibdev->port_data[port->port_num].sysfs == port)
1294 port->ibdev->port_data[port->port_num].sysfs = NULL;
1295
1296 kobject_put(&port->kobj);
1297}
1298
1299static const char *node_type_string(int node_type)
1300{
1301 switch (node_type) {
1302 case RDMA_NODE_IB_CA:
1303 return "CA";
1304 case RDMA_NODE_IB_SWITCH:
1305 return "switch";
1306 case RDMA_NODE_IB_ROUTER:
1307 return "router";
1308 case RDMA_NODE_RNIC:
1309 return "RNIC";
1310 case RDMA_NODE_USNIC:
1311 return "usNIC";
1312 case RDMA_NODE_USNIC_UDP:
1313 return "usNIC UDP";
1314 case RDMA_NODE_UNSPECIFIED:
1315 return "unspecified";
1316 }
1317 return "<unknown>";
1318}
1319
1320static ssize_t node_type_show(struct device *device,
1321 struct device_attribute *attr, char *buf)
1322{
1323 struct ib_device *dev = rdma_device_to_ibdev(device);
1324
1325 return sysfs_emit(buf, "%u: %s\n", dev->node_type,
1326 node_type_string(dev->node_type));
1327}
1328static DEVICE_ATTR_RO(node_type);
1329
1330static ssize_t sys_image_guid_show(struct device *device,
1331 struct device_attribute *dev_attr, char *buf)
1332{
1333 struct ib_device *dev = rdma_device_to_ibdev(device);
1334 __be16 *guid = (__be16 *)&dev->attrs.sys_image_guid;
1335
1336 return sysfs_emit(buf, "%04x:%04x:%04x:%04x\n",
1337 be16_to_cpu(guid[0]),
1338 be16_to_cpu(guid[1]),
1339 be16_to_cpu(guid[2]),
1340 be16_to_cpu(guid[3]));
1341}
1342static DEVICE_ATTR_RO(sys_image_guid);
1343
1344static ssize_t node_guid_show(struct device *device,
1345 struct device_attribute *attr, char *buf)
1346{
1347 struct ib_device *dev = rdma_device_to_ibdev(device);
1348 __be16 *node_guid = (__be16 *)&dev->node_guid;
1349
1350 return sysfs_emit(buf, "%04x:%04x:%04x:%04x\n",
1351 be16_to_cpu(node_guid[0]),
1352 be16_to_cpu(node_guid[1]),
1353 be16_to_cpu(node_guid[2]),
1354 be16_to_cpu(node_guid[3]));
1355}
1356static DEVICE_ATTR_RO(node_guid);
1357
1358static ssize_t node_desc_show(struct device *device,
1359 struct device_attribute *attr, char *buf)
1360{
1361 struct ib_device *dev = rdma_device_to_ibdev(device);
1362
1363 return sysfs_emit(buf, "%.64s\n", dev->node_desc);
1364}
1365
1366static ssize_t node_desc_store(struct device *device,
1367 struct device_attribute *attr,
1368 const char *buf, size_t count)
1369{
1370 struct ib_device *dev = rdma_device_to_ibdev(device);
1371 struct ib_device_modify desc = {};
1372 int ret;
1373
1374 if (!dev->ops.modify_device)
1375 return -EOPNOTSUPP;
1376
1377 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1378 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1379 if (ret)
1380 return ret;
1381
1382 return count;
1383}
1384static DEVICE_ATTR_RW(node_desc);
1385
1386static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr,
1387 char *buf)
1388{
1389 struct ib_device *dev = rdma_device_to_ibdev(device);
1390 char version[IB_FW_VERSION_NAME_MAX] = {};
1391
1392 ib_get_device_fw_str(dev, version);
1393
1394 return sysfs_emit(buf, "%s\n", version);
1395}
1396static DEVICE_ATTR_RO(fw_ver);
1397
1398static struct attribute *ib_dev_attrs[] = {
1399 &dev_attr_node_type.attr,
1400 &dev_attr_node_guid.attr,
1401 &dev_attr_sys_image_guid.attr,
1402 &dev_attr_fw_ver.attr,
1403 &dev_attr_node_desc.attr,
1404 NULL,
1405};
1406
1407const struct attribute_group ib_dev_attr_group = {
1408 .attrs = ib_dev_attrs,
1409};
1410
1411void ib_free_port_attrs(struct ib_core_device *coredev)
1412{
1413 struct kobject *p, *t;
1414
1415 list_for_each_entry_safe(p, t, &coredev->port_list, entry) {
1416 struct ib_port *port = container_of(p, struct ib_port, kobj);
1417
1418 destroy_gid_attrs(port);
1419 destroy_port(coredev, port);
1420 }
1421
1422 kobject_put(coredev->ports_kobj);
1423}
1424
1425int ib_setup_port_attrs(struct ib_core_device *coredev)
1426{
1427 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1428 u32 port_num;
1429 int ret;
1430
1431 coredev->ports_kobj = kobject_create_and_add("ports",
1432 &coredev->dev.kobj);
1433 if (!coredev->ports_kobj)
1434 return -ENOMEM;
1435
1436 rdma_for_each_port (device, port_num) {
1437 struct ib_port_attr attr;
1438 struct ib_port *port;
1439
1440 ret = ib_query_port(device, port_num, &attr);
1441 if (ret)
1442 goto err_put;
1443
1444 port = setup_port(coredev, port_num, &attr);
1445 if (IS_ERR(port)) {
1446 ret = PTR_ERR(port);
1447 goto err_put;
1448 }
1449
1450 ret = setup_gid_attrs(port, &attr);
1451 if (ret)
1452 goto err_put;
1453 }
1454 return 0;
1455
1456err_put:
1457 ib_free_port_attrs(coredev);
1458 return ret;
1459}
1460
1461/**
1462 * ib_port_register_client_groups - Add an ib_client's attributes to the port
1463 *
1464 * @ibdev: IB device to add counters
1465 * @port_num: valid port number
1466 * @groups: Group list of attributes
1467 *
1468 * Do not use. Only for legacy sysfs compatibility.
1469 */
1470int ib_port_register_client_groups(struct ib_device *ibdev, u32 port_num,
1471 const struct attribute_group **groups)
1472{
1473 return sysfs_create_groups(&ibdev->port_data[port_num].sysfs->kobj,
1474 groups);
1475}
1476EXPORT_SYMBOL(ib_port_register_client_groups);
1477
1478void ib_port_unregister_client_groups(struct ib_device *ibdev, u32 port_num,
1479 const struct attribute_group **groups)
1480{
1481 return sysfs_remove_groups(&ibdev->port_data[port_num].sysfs->kobj,
1482 groups);
1483}
1484EXPORT_SYMBOL(ib_port_unregister_client_groups);
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
46struct ib_port;
47
48struct gid_attr_group {
49 struct ib_port *port;
50 struct kobject kobj;
51 struct attribute_group ndev;
52 struct attribute_group type;
53};
54struct 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
66struct 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) \
74struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
75
76#define PORT_ATTR_RO(_name) \
77struct port_attribute port_attr_##_name = __ATTR_RO(_name)
78
79struct port_table_attribute {
80 struct port_attribute attr;
81 char name[8];
82 int index;
83 __be16 attr_id;
84};
85
86struct 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
98static 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
111static 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
124static const struct sysfs_ops port_sysfs_ops = {
125 .show = port_attr_show,
126 .store = port_attr_store
127};
128
129static 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
143static const struct sysfs_ops gid_attr_sysfs_ops = {
144 .show = gid_attr_show
145};
146
147static 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
171static 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
184static 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
198static 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
211static 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
224static 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
237static 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
290static 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
313static 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
326static PORT_ATTR_RO(state);
327static PORT_ATTR_RO(lid);
328static PORT_ATTR_RO(lid_mask_count);
329static PORT_ATTR_RO(sm_lid);
330static PORT_ATTR_RO(sm_sl);
331static PORT_ATTR_RO(cap_mask);
332static PORT_ATTR_RO(rate);
333static PORT_ATTR_RO(phys_state);
334static PORT_ATTR_RO(link_layer);
335
336static 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
349static 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
357static 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
362static 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
381err:
382 if (gid_attr.ndev)
383 dev_put(gid_attr.ndev);
384 return ret;
385}
386
387static 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
414static 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
420static 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
427static 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) \
443struct 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) \
450struct 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 */
460static 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;
500out:
501 kfree(in_mad);
502 kfree(out_mad);
503 return ret;
504}
505
506static 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
549static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
550static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
551static PORT_PMA_ATTR(link_downed , 2, 8, 56);
552static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
553static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
554static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
555static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
556static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
557static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
558static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
559static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
560static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
561static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
562static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
563static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
564static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
565static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
566
567/*
568 * Counters added by extended set
569 */
570static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
571static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
572static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
573static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
574static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
575static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
576static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
577static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
578
579static 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
600static 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
625static 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
646static struct attribute_group pma_group = {
647 .name = "counters",
648 .attrs = pma_attrs
649};
650
651static struct attribute_group pma_group_ext = {
652 .name = "counters",
653 .attrs = pma_attrs_ext
654};
655
656static struct attribute_group pma_group_noietf = {
657 .name = "counters",
658 .attrs = pma_attrs_noietf
659};
660
661static 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
684static 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
708static struct kobj_type port_type = {
709 .release = ib_port_release,
710 .sysfs_ops = &port_sysfs_ops,
711 .default_attrs = port_default_attrs
712};
713
714static struct kobj_type gid_attr_type = {
715 .sysfs_ops = &gid_attr_sysfs_ops,
716 .release = ib_port_gid_attr_release
717};
718
719static struct attribute **
720alloc_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
755err:
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 */
766static 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
786static 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
802static 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
807static 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);
831unlock:
832 mutex_unlock(&stats->lock);
833
834 return ret;
835}
836
837static 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
864static 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
899static 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
910static 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
928static 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
946static 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
1012err:
1013 for (; i >= 0; i--)
1014 kfree(hsag->attrs[i]);
1015err_free_hsag:
1016 kfree(hsag);
1017err_free_stats:
1018 kfree(stats);
1019 return;
1020}
1021
1022static 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
1137err_remove_pkey:
1138 sysfs_remove_group(&p->kobj, &p->pkey_group);
1139
1140err_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
1147err_remove_gid_type:
1148 sysfs_remove_group(&p->gid_attr_group->kobj,
1149 &p->gid_attr_group->type);
1150
1151err_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
1158err_remove_gid_ndev:
1159 sysfs_remove_group(&p->gid_attr_group->kobj,
1160 &p->gid_attr_group->ndev);
1161
1162err_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
1169err_remove_gid:
1170 sysfs_remove_group(&p->kobj, &p->gid_group);
1171
1172err_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
1179err_remove_pma:
1180 sysfs_remove_group(&p->kobj, p->pma_table);
1181
1182err_put_gid_attrs:
1183 kobject_put(&p->gid_attr_group->kobj);
1184
1185err_put:
1186 kobject_put(&p->kobj);
1187 return ret;
1188}
1189
1190static 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
1206static 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
1218static 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
1230static 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
1238static 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
1257static 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
1267static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
1268static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
1269static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
1270static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
1271static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1272
1273static 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
1281static 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
1306int 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
1352err_put:
1353 free_port_list_attributes(device);
1354
1355err_unregister:
1356 device_del(class_dev);
1357
1358err:
1359 return ret;
1360}
1361
1362void 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}