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