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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/string.h>
39
40#include <rdma/ib_mad.h>
41
42struct ib_port {
43 struct kobject kobj;
44 struct ib_device *ibdev;
45 struct attribute_group gid_group;
46 struct attribute_group pkey_group;
47 u8 port_num;
48};
49
50struct port_attribute {
51 struct attribute attr;
52 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
53 ssize_t (*store)(struct ib_port *, struct port_attribute *,
54 const char *buf, size_t count);
55};
56
57#define PORT_ATTR(_name, _mode, _show, _store) \
58struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
59
60#define PORT_ATTR_RO(_name) \
61struct port_attribute port_attr_##_name = __ATTR_RO(_name)
62
63struct port_table_attribute {
64 struct port_attribute attr;
65 char name[8];
66 int index;
67};
68
69static ssize_t port_attr_show(struct kobject *kobj,
70 struct attribute *attr, char *buf)
71{
72 struct port_attribute *port_attr =
73 container_of(attr, struct port_attribute, attr);
74 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
75
76 if (!port_attr->show)
77 return -EIO;
78
79 return port_attr->show(p, port_attr, buf);
80}
81
82static const struct sysfs_ops port_sysfs_ops = {
83 .show = port_attr_show
84};
85
86static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
87 char *buf)
88{
89 struct ib_port_attr attr;
90 ssize_t ret;
91
92 static const char *state_name[] = {
93 [IB_PORT_NOP] = "NOP",
94 [IB_PORT_DOWN] = "DOWN",
95 [IB_PORT_INIT] = "INIT",
96 [IB_PORT_ARMED] = "ARMED",
97 [IB_PORT_ACTIVE] = "ACTIVE",
98 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
99 };
100
101 ret = ib_query_port(p->ibdev, p->port_num, &attr);
102 if (ret)
103 return ret;
104
105 return sprintf(buf, "%d: %s\n", attr.state,
106 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
107 state_name[attr.state] : "UNKNOWN");
108}
109
110static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
111 char *buf)
112{
113 struct ib_port_attr attr;
114 ssize_t ret;
115
116 ret = ib_query_port(p->ibdev, p->port_num, &attr);
117 if (ret)
118 return ret;
119
120 return sprintf(buf, "0x%x\n", attr.lid);
121}
122
123static ssize_t lid_mask_count_show(struct ib_port *p,
124 struct port_attribute *unused,
125 char *buf)
126{
127 struct ib_port_attr attr;
128 ssize_t ret;
129
130 ret = ib_query_port(p->ibdev, p->port_num, &attr);
131 if (ret)
132 return ret;
133
134 return sprintf(buf, "%d\n", attr.lmc);
135}
136
137static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
138 char *buf)
139{
140 struct ib_port_attr attr;
141 ssize_t ret;
142
143 ret = ib_query_port(p->ibdev, p->port_num, &attr);
144 if (ret)
145 return ret;
146
147 return sprintf(buf, "0x%x\n", attr.sm_lid);
148}
149
150static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
151 char *buf)
152{
153 struct ib_port_attr attr;
154 ssize_t ret;
155
156 ret = ib_query_port(p->ibdev, p->port_num, &attr);
157 if (ret)
158 return ret;
159
160 return sprintf(buf, "%d\n", attr.sm_sl);
161}
162
163static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
164 char *buf)
165{
166 struct ib_port_attr attr;
167 ssize_t ret;
168
169 ret = ib_query_port(p->ibdev, p->port_num, &attr);
170 if (ret)
171 return ret;
172
173 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
174}
175
176static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
177 char *buf)
178{
179 struct ib_port_attr attr;
180 char *speed = "";
181 int rate;
182 ssize_t ret;
183
184 ret = ib_query_port(p->ibdev, p->port_num, &attr);
185 if (ret)
186 return ret;
187
188 switch (attr.active_speed) {
189 case 2: speed = " DDR"; break;
190 case 4: speed = " QDR"; break;
191 }
192
193 rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed;
194 if (rate < 0)
195 return -EINVAL;
196
197 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
198 rate / 10, rate % 10 ? ".5" : "",
199 ib_width_enum_to_int(attr.active_width), speed);
200}
201
202static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
203 char *buf)
204{
205 struct ib_port_attr attr;
206
207 ssize_t ret;
208
209 ret = ib_query_port(p->ibdev, p->port_num, &attr);
210 if (ret)
211 return ret;
212
213 switch (attr.phys_state) {
214 case 1: return sprintf(buf, "1: Sleep\n");
215 case 2: return sprintf(buf, "2: Polling\n");
216 case 3: return sprintf(buf, "3: Disabled\n");
217 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
218 case 5: return sprintf(buf, "5: LinkUp\n");
219 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
220 case 7: return sprintf(buf, "7: Phy Test\n");
221 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
222 }
223}
224
225static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
226 char *buf)
227{
228 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
229 case IB_LINK_LAYER_INFINIBAND:
230 return sprintf(buf, "%s\n", "InfiniBand");
231 case IB_LINK_LAYER_ETHERNET:
232 return sprintf(buf, "%s\n", "Ethernet");
233 default:
234 return sprintf(buf, "%s\n", "Unknown");
235 }
236}
237
238static PORT_ATTR_RO(state);
239static PORT_ATTR_RO(lid);
240static PORT_ATTR_RO(lid_mask_count);
241static PORT_ATTR_RO(sm_lid);
242static PORT_ATTR_RO(sm_sl);
243static PORT_ATTR_RO(cap_mask);
244static PORT_ATTR_RO(rate);
245static PORT_ATTR_RO(phys_state);
246static PORT_ATTR_RO(link_layer);
247
248static struct attribute *port_default_attrs[] = {
249 &port_attr_state.attr,
250 &port_attr_lid.attr,
251 &port_attr_lid_mask_count.attr,
252 &port_attr_sm_lid.attr,
253 &port_attr_sm_sl.attr,
254 &port_attr_cap_mask.attr,
255 &port_attr_rate.attr,
256 &port_attr_phys_state.attr,
257 &port_attr_link_layer.attr,
258 NULL
259};
260
261static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
262 char *buf)
263{
264 struct port_table_attribute *tab_attr =
265 container_of(attr, struct port_table_attribute, attr);
266 union ib_gid gid;
267 ssize_t ret;
268
269 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
270 if (ret)
271 return ret;
272
273 return sprintf(buf, "%pI6\n", gid.raw);
274}
275
276static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
277 char *buf)
278{
279 struct port_table_attribute *tab_attr =
280 container_of(attr, struct port_table_attribute, attr);
281 u16 pkey;
282 ssize_t ret;
283
284 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
285 if (ret)
286 return ret;
287
288 return sprintf(buf, "0x%04x\n", pkey);
289}
290
291#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
292struct port_table_attribute port_pma_attr_##_name = { \
293 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
294 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \
295}
296
297static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
298 char *buf)
299{
300 struct port_table_attribute *tab_attr =
301 container_of(attr, struct port_table_attribute, attr);
302 int offset = tab_attr->index & 0xffff;
303 int width = (tab_attr->index >> 16) & 0xff;
304 struct ib_mad *in_mad = NULL;
305 struct ib_mad *out_mad = NULL;
306 ssize_t ret;
307
308 if (!p->ibdev->process_mad)
309 return sprintf(buf, "N/A (no PMA)\n");
310
311 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
312 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
313 if (!in_mad || !out_mad) {
314 ret = -ENOMEM;
315 goto out;
316 }
317
318 in_mad->mad_hdr.base_version = 1;
319 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
320 in_mad->mad_hdr.class_version = 1;
321 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
322 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */
323
324 in_mad->data[41] = p->port_num; /* PortSelect field */
325
326 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
327 p->port_num, NULL, NULL, in_mad, out_mad) &
328 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
329 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
330 ret = -EINVAL;
331 goto out;
332 }
333
334 switch (width) {
335 case 4:
336 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
337 (4 - (offset % 8))) & 0xf);
338 break;
339 case 8:
340 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
341 break;
342 case 16:
343 ret = sprintf(buf, "%u\n",
344 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
345 break;
346 case 32:
347 ret = sprintf(buf, "%u\n",
348 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
349 break;
350 default:
351 ret = 0;
352 }
353
354out:
355 kfree(in_mad);
356 kfree(out_mad);
357
358 return ret;
359}
360
361static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
362static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
363static PORT_PMA_ATTR(link_downed , 2, 8, 56);
364static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
365static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
366static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
367static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
368static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
369static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
370static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
371static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
372static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
373static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
374static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
375static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
376static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
377
378static struct attribute *pma_attrs[] = {
379 &port_pma_attr_symbol_error.attr.attr,
380 &port_pma_attr_link_error_recovery.attr.attr,
381 &port_pma_attr_link_downed.attr.attr,
382 &port_pma_attr_port_rcv_errors.attr.attr,
383 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
384 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
385 &port_pma_attr_port_xmit_discards.attr.attr,
386 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
387 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
388 &port_pma_attr_local_link_integrity_errors.attr.attr,
389 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
390 &port_pma_attr_VL15_dropped.attr.attr,
391 &port_pma_attr_port_xmit_data.attr.attr,
392 &port_pma_attr_port_rcv_data.attr.attr,
393 &port_pma_attr_port_xmit_packets.attr.attr,
394 &port_pma_attr_port_rcv_packets.attr.attr,
395 NULL
396};
397
398static struct attribute_group pma_group = {
399 .name = "counters",
400 .attrs = pma_attrs
401};
402
403static void ib_port_release(struct kobject *kobj)
404{
405 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
406 struct attribute *a;
407 int i;
408
409 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
410 kfree(a);
411
412 kfree(p->gid_group.attrs);
413
414 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
415 kfree(a);
416
417 kfree(p->pkey_group.attrs);
418
419 kfree(p);
420}
421
422static struct kobj_type port_type = {
423 .release = ib_port_release,
424 .sysfs_ops = &port_sysfs_ops,
425 .default_attrs = port_default_attrs
426};
427
428static void ib_device_release(struct device *device)
429{
430 struct ib_device *dev = container_of(device, struct ib_device, dev);
431
432 kfree(dev);
433}
434
435static int ib_device_uevent(struct device *device,
436 struct kobj_uevent_env *env)
437{
438 struct ib_device *dev = container_of(device, struct ib_device, dev);
439
440 if (add_uevent_var(env, "NAME=%s", dev->name))
441 return -ENOMEM;
442
443 /*
444 * It would be nice to pass the node GUID with the event...
445 */
446
447 return 0;
448}
449
450static struct attribute **
451alloc_group_attrs(ssize_t (*show)(struct ib_port *,
452 struct port_attribute *, char *buf),
453 int len)
454{
455 struct attribute **tab_attr;
456 struct port_table_attribute *element;
457 int i;
458
459 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
460 if (!tab_attr)
461 return NULL;
462
463 for (i = 0; i < len; i++) {
464 element = kzalloc(sizeof(struct port_table_attribute),
465 GFP_KERNEL);
466 if (!element)
467 goto err;
468
469 if (snprintf(element->name, sizeof(element->name),
470 "%d", i) >= sizeof(element->name)) {
471 kfree(element);
472 goto err;
473 }
474
475 element->attr.attr.name = element->name;
476 element->attr.attr.mode = S_IRUGO;
477 element->attr.show = show;
478 element->index = i;
479 sysfs_attr_init(&element->attr.attr);
480
481 tab_attr[i] = &element->attr.attr;
482 }
483
484 return tab_attr;
485
486err:
487 while (--i >= 0)
488 kfree(tab_attr[i]);
489 kfree(tab_attr);
490 return NULL;
491}
492
493static int add_port(struct ib_device *device, int port_num,
494 int (*port_callback)(struct ib_device *,
495 u8, struct kobject *))
496{
497 struct ib_port *p;
498 struct ib_port_attr attr;
499 int i;
500 int ret;
501
502 ret = ib_query_port(device, port_num, &attr);
503 if (ret)
504 return ret;
505
506 p = kzalloc(sizeof *p, GFP_KERNEL);
507 if (!p)
508 return -ENOMEM;
509
510 p->ibdev = device;
511 p->port_num = port_num;
512
513 ret = kobject_init_and_add(&p->kobj, &port_type,
514 kobject_get(device->ports_parent),
515 "%d", port_num);
516 if (ret)
517 goto err_put;
518
519 ret = sysfs_create_group(&p->kobj, &pma_group);
520 if (ret)
521 goto err_put;
522
523 p->gid_group.name = "gids";
524 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
525 if (!p->gid_group.attrs)
526 goto err_remove_pma;
527
528 ret = sysfs_create_group(&p->kobj, &p->gid_group);
529 if (ret)
530 goto err_free_gid;
531
532 p->pkey_group.name = "pkeys";
533 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
534 attr.pkey_tbl_len);
535 if (!p->pkey_group.attrs)
536 goto err_remove_gid;
537
538 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
539 if (ret)
540 goto err_free_pkey;
541
542 if (port_callback) {
543 ret = port_callback(device, port_num, &p->kobj);
544 if (ret)
545 goto err_remove_pkey;
546 }
547
548 list_add_tail(&p->kobj.entry, &device->port_list);
549
550 kobject_uevent(&p->kobj, KOBJ_ADD);
551 return 0;
552
553err_remove_pkey:
554 sysfs_remove_group(&p->kobj, &p->pkey_group);
555
556err_free_pkey:
557 for (i = 0; i < attr.pkey_tbl_len; ++i)
558 kfree(p->pkey_group.attrs[i]);
559
560 kfree(p->pkey_group.attrs);
561
562err_remove_gid:
563 sysfs_remove_group(&p->kobj, &p->gid_group);
564
565err_free_gid:
566 for (i = 0; i < attr.gid_tbl_len; ++i)
567 kfree(p->gid_group.attrs[i]);
568
569 kfree(p->gid_group.attrs);
570
571err_remove_pma:
572 sysfs_remove_group(&p->kobj, &pma_group);
573
574err_put:
575 kobject_put(device->ports_parent);
576 kfree(p);
577 return ret;
578}
579
580static ssize_t show_node_type(struct device *device,
581 struct device_attribute *attr, char *buf)
582{
583 struct ib_device *dev = container_of(device, struct ib_device, dev);
584
585 switch (dev->node_type) {
586 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
587 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
588 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
589 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
590 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
591 }
592}
593
594static ssize_t show_sys_image_guid(struct device *device,
595 struct device_attribute *dev_attr, char *buf)
596{
597 struct ib_device *dev = container_of(device, struct ib_device, dev);
598 struct ib_device_attr attr;
599 ssize_t ret;
600
601 ret = ib_query_device(dev, &attr);
602 if (ret)
603 return ret;
604
605 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
606 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
607 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
608 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
609 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
610}
611
612static ssize_t show_node_guid(struct device *device,
613 struct device_attribute *attr, char *buf)
614{
615 struct ib_device *dev = container_of(device, struct ib_device, dev);
616
617 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
618 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
619 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
620 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
621 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
622}
623
624static ssize_t show_node_desc(struct device *device,
625 struct device_attribute *attr, char *buf)
626{
627 struct ib_device *dev = container_of(device, struct ib_device, dev);
628
629 return sprintf(buf, "%.64s\n", dev->node_desc);
630}
631
632static ssize_t set_node_desc(struct device *device,
633 struct device_attribute *attr,
634 const char *buf, size_t count)
635{
636 struct ib_device *dev = container_of(device, struct ib_device, dev);
637 struct ib_device_modify desc = {};
638 int ret;
639
640 if (!dev->modify_device)
641 return -EIO;
642
643 memcpy(desc.node_desc, buf, min_t(int, count, 64));
644 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
645 if (ret)
646 return ret;
647
648 return count;
649}
650
651static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
652static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
653static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
654static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
655
656static struct device_attribute *ib_class_attributes[] = {
657 &dev_attr_node_type,
658 &dev_attr_sys_image_guid,
659 &dev_attr_node_guid,
660 &dev_attr_node_desc
661};
662
663static struct class ib_class = {
664 .name = "infiniband",
665 .dev_release = ib_device_release,
666 .dev_uevent = ib_device_uevent,
667};
668
669/* Show a given an attribute in the statistics group */
670static ssize_t show_protocol_stat(const struct device *device,
671 struct device_attribute *attr, char *buf,
672 unsigned offset)
673{
674 struct ib_device *dev = container_of(device, struct ib_device, dev);
675 union rdma_protocol_stats stats;
676 ssize_t ret;
677
678 ret = dev->get_protocol_stats(dev, &stats);
679 if (ret)
680 return ret;
681
682 return sprintf(buf, "%llu\n",
683 (unsigned long long) ((u64 *) &stats)[offset]);
684}
685
686/* generate a read-only iwarp statistics attribute */
687#define IW_STATS_ENTRY(name) \
688static ssize_t show_##name(struct device *device, \
689 struct device_attribute *attr, char *buf) \
690{ \
691 return show_protocol_stat(device, attr, buf, \
692 offsetof(struct iw_protocol_stats, name) / \
693 sizeof (u64)); \
694} \
695static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
696
697IW_STATS_ENTRY(ipInReceives);
698IW_STATS_ENTRY(ipInHdrErrors);
699IW_STATS_ENTRY(ipInTooBigErrors);
700IW_STATS_ENTRY(ipInNoRoutes);
701IW_STATS_ENTRY(ipInAddrErrors);
702IW_STATS_ENTRY(ipInUnknownProtos);
703IW_STATS_ENTRY(ipInTruncatedPkts);
704IW_STATS_ENTRY(ipInDiscards);
705IW_STATS_ENTRY(ipInDelivers);
706IW_STATS_ENTRY(ipOutForwDatagrams);
707IW_STATS_ENTRY(ipOutRequests);
708IW_STATS_ENTRY(ipOutDiscards);
709IW_STATS_ENTRY(ipOutNoRoutes);
710IW_STATS_ENTRY(ipReasmTimeout);
711IW_STATS_ENTRY(ipReasmReqds);
712IW_STATS_ENTRY(ipReasmOKs);
713IW_STATS_ENTRY(ipReasmFails);
714IW_STATS_ENTRY(ipFragOKs);
715IW_STATS_ENTRY(ipFragFails);
716IW_STATS_ENTRY(ipFragCreates);
717IW_STATS_ENTRY(ipInMcastPkts);
718IW_STATS_ENTRY(ipOutMcastPkts);
719IW_STATS_ENTRY(ipInBcastPkts);
720IW_STATS_ENTRY(ipOutBcastPkts);
721IW_STATS_ENTRY(tcpRtoAlgorithm);
722IW_STATS_ENTRY(tcpRtoMin);
723IW_STATS_ENTRY(tcpRtoMax);
724IW_STATS_ENTRY(tcpMaxConn);
725IW_STATS_ENTRY(tcpActiveOpens);
726IW_STATS_ENTRY(tcpPassiveOpens);
727IW_STATS_ENTRY(tcpAttemptFails);
728IW_STATS_ENTRY(tcpEstabResets);
729IW_STATS_ENTRY(tcpCurrEstab);
730IW_STATS_ENTRY(tcpInSegs);
731IW_STATS_ENTRY(tcpOutSegs);
732IW_STATS_ENTRY(tcpRetransSegs);
733IW_STATS_ENTRY(tcpInErrs);
734IW_STATS_ENTRY(tcpOutRsts);
735
736static struct attribute *iw_proto_stats_attrs[] = {
737 &dev_attr_ipInReceives.attr,
738 &dev_attr_ipInHdrErrors.attr,
739 &dev_attr_ipInTooBigErrors.attr,
740 &dev_attr_ipInNoRoutes.attr,
741 &dev_attr_ipInAddrErrors.attr,
742 &dev_attr_ipInUnknownProtos.attr,
743 &dev_attr_ipInTruncatedPkts.attr,
744 &dev_attr_ipInDiscards.attr,
745 &dev_attr_ipInDelivers.attr,
746 &dev_attr_ipOutForwDatagrams.attr,
747 &dev_attr_ipOutRequests.attr,
748 &dev_attr_ipOutDiscards.attr,
749 &dev_attr_ipOutNoRoutes.attr,
750 &dev_attr_ipReasmTimeout.attr,
751 &dev_attr_ipReasmReqds.attr,
752 &dev_attr_ipReasmOKs.attr,
753 &dev_attr_ipReasmFails.attr,
754 &dev_attr_ipFragOKs.attr,
755 &dev_attr_ipFragFails.attr,
756 &dev_attr_ipFragCreates.attr,
757 &dev_attr_ipInMcastPkts.attr,
758 &dev_attr_ipOutMcastPkts.attr,
759 &dev_attr_ipInBcastPkts.attr,
760 &dev_attr_ipOutBcastPkts.attr,
761 &dev_attr_tcpRtoAlgorithm.attr,
762 &dev_attr_tcpRtoMin.attr,
763 &dev_attr_tcpRtoMax.attr,
764 &dev_attr_tcpMaxConn.attr,
765 &dev_attr_tcpActiveOpens.attr,
766 &dev_attr_tcpPassiveOpens.attr,
767 &dev_attr_tcpAttemptFails.attr,
768 &dev_attr_tcpEstabResets.attr,
769 &dev_attr_tcpCurrEstab.attr,
770 &dev_attr_tcpInSegs.attr,
771 &dev_attr_tcpOutSegs.attr,
772 &dev_attr_tcpRetransSegs.attr,
773 &dev_attr_tcpInErrs.attr,
774 &dev_attr_tcpOutRsts.attr,
775 NULL
776};
777
778static struct attribute_group iw_stats_group = {
779 .name = "proto_stats",
780 .attrs = iw_proto_stats_attrs,
781};
782
783int ib_device_register_sysfs(struct ib_device *device,
784 int (*port_callback)(struct ib_device *,
785 u8, struct kobject *))
786{
787 struct device *class_dev = &device->dev;
788 int ret;
789 int i;
790
791 class_dev->class = &ib_class;
792 class_dev->parent = device->dma_device;
793 dev_set_name(class_dev, device->name);
794 dev_set_drvdata(class_dev, device);
795
796 INIT_LIST_HEAD(&device->port_list);
797
798 ret = device_register(class_dev);
799 if (ret)
800 goto err;
801
802 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
803 ret = device_create_file(class_dev, ib_class_attributes[i]);
804 if (ret)
805 goto err_unregister;
806 }
807
808 device->ports_parent = kobject_create_and_add("ports",
809 kobject_get(&class_dev->kobj));
810 if (!device->ports_parent) {
811 ret = -ENOMEM;
812 goto err_put;
813 }
814
815 if (device->node_type == RDMA_NODE_IB_SWITCH) {
816 ret = add_port(device, 0, port_callback);
817 if (ret)
818 goto err_put;
819 } else {
820 for (i = 1; i <= device->phys_port_cnt; ++i) {
821 ret = add_port(device, i, port_callback);
822 if (ret)
823 goto err_put;
824 }
825 }
826
827 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {
828 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);
829 if (ret)
830 goto err_put;
831 }
832
833 return 0;
834
835err_put:
836 {
837 struct kobject *p, *t;
838 struct ib_port *port;
839
840 list_for_each_entry_safe(p, t, &device->port_list, entry) {
841 list_del(&p->entry);
842 port = container_of(p, struct ib_port, kobj);
843 sysfs_remove_group(p, &pma_group);
844 sysfs_remove_group(p, &port->pkey_group);
845 sysfs_remove_group(p, &port->gid_group);
846 kobject_put(p);
847 }
848 }
849
850 kobject_put(&class_dev->kobj);
851
852err_unregister:
853 device_unregister(class_dev);
854
855err:
856 return ret;
857}
858
859void ib_device_unregister_sysfs(struct ib_device *device)
860{
861 struct kobject *p, *t;
862 struct ib_port *port;
863
864 /* Hold kobject until ib_dealloc_device() */
865 kobject_get(&device->dev.kobj);
866
867 list_for_each_entry_safe(p, t, &device->port_list, entry) {
868 list_del(&p->entry);
869 port = container_of(p, struct ib_port, kobj);
870 sysfs_remove_group(p, &pma_group);
871 sysfs_remove_group(p, &port->pkey_group);
872 sysfs_remove_group(p, &port->gid_group);
873 kobject_put(p);
874 }
875
876 kobject_put(device->ports_parent);
877 device_unregister(&device->dev);
878}
879
880int ib_sysfs_setup(void)
881{
882 return class_register(&ib_class);
883}
884
885void ib_sysfs_cleanup(void)
886{
887 class_unregister(&ib_class);
888}
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
48struct ib_port;
49
50struct gid_attr_group {
51 struct ib_port *port;
52 struct kobject kobj;
53 struct attribute_group ndev;
54 struct attribute_group type;
55};
56struct ib_port {
57 struct kobject kobj;
58 struct ib_device *ibdev;
59 struct gid_attr_group *gid_attr_group;
60 struct attribute_group gid_group;
61 struct attribute_group *pkey_group;
62 struct attribute_group *pma_table;
63 struct attribute_group *hw_stats_ag;
64 struct rdma_hw_stats *hw_stats;
65 u8 port_num;
66};
67
68struct port_attribute {
69 struct attribute attr;
70 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
71 ssize_t (*store)(struct ib_port *, struct port_attribute *,
72 const char *buf, size_t count);
73};
74
75#define PORT_ATTR(_name, _mode, _show, _store) \
76struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
77
78#define PORT_ATTR_RO(_name) \
79struct port_attribute port_attr_##_name = __ATTR_RO(_name)
80
81struct port_table_attribute {
82 struct port_attribute attr;
83 char name[8];
84 int index;
85 __be16 attr_id;
86};
87
88struct hw_stats_attribute {
89 struct attribute attr;
90 ssize_t (*show)(struct kobject *kobj,
91 struct attribute *attr, char *buf);
92 ssize_t (*store)(struct kobject *kobj,
93 struct attribute *attr,
94 const char *buf,
95 size_t count);
96 int index;
97 u8 port_num;
98};
99
100static ssize_t port_attr_show(struct kobject *kobj,
101 struct attribute *attr, char *buf)
102{
103 struct port_attribute *port_attr =
104 container_of(attr, struct port_attribute, attr);
105 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
106
107 if (!port_attr->show)
108 return -EIO;
109
110 return port_attr->show(p, port_attr, buf);
111}
112
113static ssize_t port_attr_store(struct kobject *kobj,
114 struct attribute *attr,
115 const char *buf, size_t count)
116{
117 struct port_attribute *port_attr =
118 container_of(attr, struct port_attribute, attr);
119 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
120
121 if (!port_attr->store)
122 return -EIO;
123 return port_attr->store(p, port_attr, buf, count);
124}
125
126static const struct sysfs_ops port_sysfs_ops = {
127 .show = port_attr_show,
128 .store = port_attr_store
129};
130
131static ssize_t gid_attr_show(struct kobject *kobj,
132 struct attribute *attr, char *buf)
133{
134 struct port_attribute *port_attr =
135 container_of(attr, struct port_attribute, attr);
136 struct ib_port *p = container_of(kobj, struct gid_attr_group,
137 kobj)->port;
138
139 if (!port_attr->show)
140 return -EIO;
141
142 return port_attr->show(p, port_attr, buf);
143}
144
145static const struct sysfs_ops gid_attr_sysfs_ops = {
146 .show = gid_attr_show
147};
148
149static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
150 char *buf)
151{
152 struct ib_port_attr attr;
153 ssize_t ret;
154
155 static const char *state_name[] = {
156 [IB_PORT_NOP] = "NOP",
157 [IB_PORT_DOWN] = "DOWN",
158 [IB_PORT_INIT] = "INIT",
159 [IB_PORT_ARMED] = "ARMED",
160 [IB_PORT_ACTIVE] = "ACTIVE",
161 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
162 };
163
164 ret = ib_query_port(p->ibdev, p->port_num, &attr);
165 if (ret)
166 return ret;
167
168 return sprintf(buf, "%d: %s\n", attr.state,
169 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
170 state_name[attr.state] : "UNKNOWN");
171}
172
173static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
174 char *buf)
175{
176 struct ib_port_attr attr;
177 ssize_t ret;
178
179 ret = ib_query_port(p->ibdev, p->port_num, &attr);
180 if (ret)
181 return ret;
182
183 return sprintf(buf, "0x%x\n", attr.lid);
184}
185
186static ssize_t lid_mask_count_show(struct ib_port *p,
187 struct port_attribute *unused,
188 char *buf)
189{
190 struct ib_port_attr attr;
191 ssize_t ret;
192
193 ret = ib_query_port(p->ibdev, p->port_num, &attr);
194 if (ret)
195 return ret;
196
197 return sprintf(buf, "%d\n", attr.lmc);
198}
199
200static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
201 char *buf)
202{
203 struct ib_port_attr attr;
204 ssize_t ret;
205
206 ret = ib_query_port(p->ibdev, p->port_num, &attr);
207 if (ret)
208 return ret;
209
210 return sprintf(buf, "0x%x\n", attr.sm_lid);
211}
212
213static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
214 char *buf)
215{
216 struct ib_port_attr attr;
217 ssize_t ret;
218
219 ret = ib_query_port(p->ibdev, p->port_num, &attr);
220 if (ret)
221 return ret;
222
223 return sprintf(buf, "%d\n", attr.sm_sl);
224}
225
226static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
227 char *buf)
228{
229 struct ib_port_attr attr;
230 ssize_t ret;
231
232 ret = ib_query_port(p->ibdev, p->port_num, &attr);
233 if (ret)
234 return ret;
235
236 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
237}
238
239static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
240 char *buf)
241{
242 struct ib_port_attr attr;
243 char *speed = "";
244 int rate; /* in deci-Gb/sec */
245 ssize_t ret;
246
247 ret = ib_query_port(p->ibdev, p->port_num, &attr);
248 if (ret)
249 return ret;
250
251 switch (attr.active_speed) {
252 case IB_SPEED_DDR:
253 speed = " DDR";
254 rate = 50;
255 break;
256 case IB_SPEED_QDR:
257 speed = " QDR";
258 rate = 100;
259 break;
260 case IB_SPEED_FDR10:
261 speed = " FDR10";
262 rate = 100;
263 break;
264 case IB_SPEED_FDR:
265 speed = " FDR";
266 rate = 140;
267 break;
268 case IB_SPEED_EDR:
269 speed = " EDR";
270 rate = 250;
271 break;
272 case IB_SPEED_HDR:
273 speed = " HDR";
274 rate = 500;
275 break;
276 case IB_SPEED_SDR:
277 default: /* default to SDR for invalid rates */
278 speed = " SDR";
279 rate = 25;
280 break;
281 }
282
283 rate *= ib_width_enum_to_int(attr.active_width);
284 if (rate < 0)
285 return -EINVAL;
286
287 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
288 rate / 10, rate % 10 ? ".5" : "",
289 ib_width_enum_to_int(attr.active_width), speed);
290}
291
292static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
293{
294 static const char * phys_state_str[] = {
295 "<unknown>",
296 "Sleep",
297 "Polling",
298 "Disabled",
299 "PortConfigurationTraining",
300 "LinkUp",
301 "LinkErrorRecovery",
302 "Phy Test",
303 };
304
305 if (phys_state < ARRAY_SIZE(phys_state_str))
306 return phys_state_str[phys_state];
307 return "<unknown>";
308}
309
310static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
311 char *buf)
312{
313 struct ib_port_attr attr;
314
315 ssize_t ret;
316
317 ret = ib_query_port(p->ibdev, p->port_num, &attr);
318 if (ret)
319 return ret;
320
321 return sprintf(buf, "%d: %s\n", attr.phys_state,
322 phys_state_to_str(attr.phys_state));
323}
324
325static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
326 char *buf)
327{
328 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
329 case IB_LINK_LAYER_INFINIBAND:
330 return sprintf(buf, "%s\n", "InfiniBand");
331 case IB_LINK_LAYER_ETHERNET:
332 return sprintf(buf, "%s\n", "Ethernet");
333 default:
334 return sprintf(buf, "%s\n", "Unknown");
335 }
336}
337
338static PORT_ATTR_RO(state);
339static PORT_ATTR_RO(lid);
340static PORT_ATTR_RO(lid_mask_count);
341static PORT_ATTR_RO(sm_lid);
342static PORT_ATTR_RO(sm_sl);
343static PORT_ATTR_RO(cap_mask);
344static PORT_ATTR_RO(rate);
345static PORT_ATTR_RO(phys_state);
346static PORT_ATTR_RO(link_layer);
347
348static struct attribute *port_default_attrs[] = {
349 &port_attr_state.attr,
350 &port_attr_lid.attr,
351 &port_attr_lid_mask_count.attr,
352 &port_attr_sm_lid.attr,
353 &port_attr_sm_sl.attr,
354 &port_attr_cap_mask.attr,
355 &port_attr_rate.attr,
356 &port_attr_phys_state.attr,
357 &port_attr_link_layer.attr,
358 NULL
359};
360
361static size_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf)
362{
363 struct net_device *ndev;
364 size_t ret = -EINVAL;
365
366 rcu_read_lock();
367 ndev = rcu_dereference(gid_attr->ndev);
368 if (ndev)
369 ret = sprintf(buf, "%s\n", ndev->name);
370 rcu_read_unlock();
371 return ret;
372}
373
374static size_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
375{
376 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
377}
378
379static ssize_t _show_port_gid_attr(
380 struct ib_port *p, struct port_attribute *attr, char *buf,
381 size_t (*print)(const struct ib_gid_attr *gid_attr, char *buf))
382{
383 struct port_table_attribute *tab_attr =
384 container_of(attr, struct port_table_attribute, attr);
385 const struct ib_gid_attr *gid_attr;
386 ssize_t ret;
387
388 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
389 if (IS_ERR(gid_attr))
390 return PTR_ERR(gid_attr);
391
392 ret = print(gid_attr, buf);
393 rdma_put_gid_attr(gid_attr);
394 return ret;
395}
396
397static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
398 char *buf)
399{
400 struct port_table_attribute *tab_attr =
401 container_of(attr, struct port_table_attribute, attr);
402 const struct ib_gid_attr *gid_attr;
403 ssize_t ret;
404
405 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
406 if (IS_ERR(gid_attr)) {
407 const union ib_gid zgid = {};
408
409 /* If reading GID fails, it is likely due to GID entry being
410 * empty (invalid) or reserved GID in the table. User space
411 * expects to read GID table entries as long as it given index
412 * is within GID table size. Administrative/debugging tool
413 * fails to query rest of the GID entries if it hits error
414 * while querying a GID of the given index. To avoid user
415 * space throwing such error on fail to read gid, return zero
416 * GID as before. This maintains backward compatibility.
417 */
418 return sprintf(buf, "%pI6\n", zgid.raw);
419 }
420
421 ret = sprintf(buf, "%pI6\n", gid_attr->gid.raw);
422 rdma_put_gid_attr(gid_attr);
423 return ret;
424}
425
426static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
427 struct port_attribute *attr, char *buf)
428{
429 return _show_port_gid_attr(p, attr, buf, print_ndev);
430}
431
432static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
433 struct port_attribute *attr,
434 char *buf)
435{
436 return _show_port_gid_attr(p, attr, buf, print_gid_type);
437}
438
439static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
440 char *buf)
441{
442 struct port_table_attribute *tab_attr =
443 container_of(attr, struct port_table_attribute, attr);
444 u16 pkey;
445 ssize_t ret;
446
447 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
448 if (ret)
449 return ret;
450
451 return sprintf(buf, "0x%04x\n", pkey);
452}
453
454#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
455struct port_table_attribute port_pma_attr_##_name = { \
456 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
457 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
458 .attr_id = IB_PMA_PORT_COUNTERS , \
459}
460
461#define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
462struct port_table_attribute port_pma_attr_ext_##_name = { \
463 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
464 .index = (_offset) | ((_width) << 16), \
465 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
466}
467
468/*
469 * Get a Perfmgmt MAD block of data.
470 * Returns error code or the number of bytes retrieved.
471 */
472static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
473 void *data, int offset, size_t size)
474{
475 struct ib_mad *in_mad;
476 struct ib_mad *out_mad;
477 size_t mad_size = sizeof(*out_mad);
478 u16 out_mad_pkey_index = 0;
479 ssize_t ret;
480
481 if (!dev->ops.process_mad)
482 return -ENOSYS;
483
484 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
485 out_mad = kzalloc(sizeof(*out_mad), GFP_KERNEL);
486 if (!in_mad || !out_mad) {
487 ret = -ENOMEM;
488 goto out;
489 }
490
491 in_mad->mad_hdr.base_version = 1;
492 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
493 in_mad->mad_hdr.class_version = 1;
494 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
495 in_mad->mad_hdr.attr_id = attr;
496
497 if (attr != IB_PMA_CLASS_PORT_INFO)
498 in_mad->data[41] = port_num; /* PortSelect field */
499
500 if ((dev->ops.process_mad(dev, IB_MAD_IGNORE_MKEY, port_num, NULL, NULL,
501 in_mad, out_mad, &mad_size,
502 &out_mad_pkey_index) &
503 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
504 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
505 ret = -EINVAL;
506 goto out;
507 }
508 memcpy(data, out_mad->data + offset, size);
509 ret = size;
510out:
511 kfree(in_mad);
512 kfree(out_mad);
513 return ret;
514}
515
516static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
517 char *buf)
518{
519 struct port_table_attribute *tab_attr =
520 container_of(attr, struct port_table_attribute, attr);
521 int offset = tab_attr->index & 0xffff;
522 int width = (tab_attr->index >> 16) & 0xff;
523 ssize_t ret;
524 u8 data[8];
525
526 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
527 40 + offset / 8, sizeof(data));
528 if (ret < 0)
529 return ret;
530
531 switch (width) {
532 case 4:
533 ret = sprintf(buf, "%u\n", (*data >>
534 (4 - (offset % 8))) & 0xf);
535 break;
536 case 8:
537 ret = sprintf(buf, "%u\n", *data);
538 break;
539 case 16:
540 ret = sprintf(buf, "%u\n",
541 be16_to_cpup((__be16 *)data));
542 break;
543 case 32:
544 ret = sprintf(buf, "%u\n",
545 be32_to_cpup((__be32 *)data));
546 break;
547 case 64:
548 ret = sprintf(buf, "%llu\n",
549 be64_to_cpup((__be64 *)data));
550 break;
551
552 default:
553 ret = 0;
554 }
555
556 return ret;
557}
558
559static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
560static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
561static PORT_PMA_ATTR(link_downed , 2, 8, 56);
562static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
563static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
564static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
565static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
566static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
567static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
568static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
569static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
570static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
571static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
572static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
573static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
574static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
575static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
576
577/*
578 * Counters added by extended set
579 */
580static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
581static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
582static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
583static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
584static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
585static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
586static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
587static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
588
589static struct attribute *pma_attrs[] = {
590 &port_pma_attr_symbol_error.attr.attr,
591 &port_pma_attr_link_error_recovery.attr.attr,
592 &port_pma_attr_link_downed.attr.attr,
593 &port_pma_attr_port_rcv_errors.attr.attr,
594 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
595 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
596 &port_pma_attr_port_xmit_discards.attr.attr,
597 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
598 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
599 &port_pma_attr_local_link_integrity_errors.attr.attr,
600 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
601 &port_pma_attr_VL15_dropped.attr.attr,
602 &port_pma_attr_port_xmit_data.attr.attr,
603 &port_pma_attr_port_rcv_data.attr.attr,
604 &port_pma_attr_port_xmit_packets.attr.attr,
605 &port_pma_attr_port_rcv_packets.attr.attr,
606 &port_pma_attr_port_xmit_wait.attr.attr,
607 NULL
608};
609
610static struct attribute *pma_attrs_ext[] = {
611 &port_pma_attr_symbol_error.attr.attr,
612 &port_pma_attr_link_error_recovery.attr.attr,
613 &port_pma_attr_link_downed.attr.attr,
614 &port_pma_attr_port_rcv_errors.attr.attr,
615 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
616 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
617 &port_pma_attr_port_xmit_discards.attr.attr,
618 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
619 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
620 &port_pma_attr_local_link_integrity_errors.attr.attr,
621 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
622 &port_pma_attr_VL15_dropped.attr.attr,
623 &port_pma_attr_ext_port_xmit_data.attr.attr,
624 &port_pma_attr_ext_port_rcv_data.attr.attr,
625 &port_pma_attr_ext_port_xmit_packets.attr.attr,
626 &port_pma_attr_port_xmit_wait.attr.attr,
627 &port_pma_attr_ext_port_rcv_packets.attr.attr,
628 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
629 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
630 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
631 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
632 NULL
633};
634
635static struct attribute *pma_attrs_noietf[] = {
636 &port_pma_attr_symbol_error.attr.attr,
637 &port_pma_attr_link_error_recovery.attr.attr,
638 &port_pma_attr_link_downed.attr.attr,
639 &port_pma_attr_port_rcv_errors.attr.attr,
640 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
641 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
642 &port_pma_attr_port_xmit_discards.attr.attr,
643 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
644 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
645 &port_pma_attr_local_link_integrity_errors.attr.attr,
646 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
647 &port_pma_attr_VL15_dropped.attr.attr,
648 &port_pma_attr_ext_port_xmit_data.attr.attr,
649 &port_pma_attr_ext_port_rcv_data.attr.attr,
650 &port_pma_attr_ext_port_xmit_packets.attr.attr,
651 &port_pma_attr_ext_port_rcv_packets.attr.attr,
652 &port_pma_attr_port_xmit_wait.attr.attr,
653 NULL
654};
655
656static struct attribute_group pma_group = {
657 .name = "counters",
658 .attrs = pma_attrs
659};
660
661static struct attribute_group pma_group_ext = {
662 .name = "counters",
663 .attrs = pma_attrs_ext
664};
665
666static struct attribute_group pma_group_noietf = {
667 .name = "counters",
668 .attrs = pma_attrs_noietf
669};
670
671static void ib_port_release(struct kobject *kobj)
672{
673 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
674 struct attribute *a;
675 int i;
676
677 if (p->gid_group.attrs) {
678 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
679 kfree(a);
680
681 kfree(p->gid_group.attrs);
682 }
683
684 if (p->pkey_group) {
685 if (p->pkey_group->attrs) {
686 for (i = 0; (a = p->pkey_group->attrs[i]); ++i)
687 kfree(a);
688
689 kfree(p->pkey_group->attrs);
690 }
691
692 kfree(p->pkey_group);
693 p->pkey_group = NULL;
694 }
695
696 kfree(p);
697}
698
699static void ib_port_gid_attr_release(struct kobject *kobj)
700{
701 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
702 kobj);
703 struct attribute *a;
704 int i;
705
706 if (g->ndev.attrs) {
707 for (i = 0; (a = g->ndev.attrs[i]); ++i)
708 kfree(a);
709
710 kfree(g->ndev.attrs);
711 }
712
713 if (g->type.attrs) {
714 for (i = 0; (a = g->type.attrs[i]); ++i)
715 kfree(a);
716
717 kfree(g->type.attrs);
718 }
719
720 kfree(g);
721}
722
723static struct kobj_type port_type = {
724 .release = ib_port_release,
725 .sysfs_ops = &port_sysfs_ops,
726 .default_attrs = port_default_attrs
727};
728
729static struct kobj_type gid_attr_type = {
730 .sysfs_ops = &gid_attr_sysfs_ops,
731 .release = ib_port_gid_attr_release
732};
733
734static struct attribute **
735alloc_group_attrs(ssize_t (*show)(struct ib_port *,
736 struct port_attribute *, char *buf),
737 int len)
738{
739 struct attribute **tab_attr;
740 struct port_table_attribute *element;
741 int i;
742
743 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
744 if (!tab_attr)
745 return NULL;
746
747 for (i = 0; i < len; i++) {
748 element = kzalloc(sizeof(struct port_table_attribute),
749 GFP_KERNEL);
750 if (!element)
751 goto err;
752
753 if (snprintf(element->name, sizeof(element->name),
754 "%d", i) >= sizeof(element->name)) {
755 kfree(element);
756 goto err;
757 }
758
759 element->attr.attr.name = element->name;
760 element->attr.attr.mode = S_IRUGO;
761 element->attr.show = show;
762 element->index = i;
763 sysfs_attr_init(&element->attr.attr);
764
765 tab_attr[i] = &element->attr.attr;
766 }
767
768 return tab_attr;
769
770err:
771 while (--i >= 0)
772 kfree(tab_attr[i]);
773 kfree(tab_attr);
774 return NULL;
775}
776
777/*
778 * Figure out which counter table to use depending on
779 * the device capabilities.
780 */
781static struct attribute_group *get_counter_table(struct ib_device *dev,
782 int port_num)
783{
784 struct ib_class_port_info cpi;
785
786 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
787 &cpi, 40, sizeof(cpi)) >= 0) {
788 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
789 /* We have extended counters */
790 return &pma_group_ext;
791
792 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
793 /* But not the IETF ones */
794 return &pma_group_noietf;
795 }
796
797 /* Fall back to normal counters */
798 return &pma_group;
799}
800
801static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
802 u8 port_num, int index)
803{
804 int ret;
805
806 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
807 return 0;
808 ret = dev->ops.get_hw_stats(dev, stats, port_num, index);
809 if (ret < 0)
810 return ret;
811 if (ret == stats->num_counters)
812 stats->timestamp = jiffies;
813
814 return 0;
815}
816
817static ssize_t print_hw_stat(struct ib_device *dev, int port_num,
818 struct rdma_hw_stats *stats, int index, char *buf)
819{
820 u64 v = rdma_counter_get_hwstat_value(dev, port_num, index);
821
822 return sprintf(buf, "%llu\n", stats->value[index] + v);
823}
824
825static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
826 char *buf)
827{
828 struct ib_device *dev;
829 struct ib_port *port;
830 struct hw_stats_attribute *hsa;
831 struct rdma_hw_stats *stats;
832 int ret;
833
834 hsa = container_of(attr, struct hw_stats_attribute, attr);
835 if (!hsa->port_num) {
836 dev = container_of((struct device *)kobj,
837 struct ib_device, dev);
838 stats = dev->hw_stats;
839 } else {
840 port = container_of(kobj, struct ib_port, kobj);
841 dev = port->ibdev;
842 stats = port->hw_stats;
843 }
844 mutex_lock(&stats->lock);
845 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
846 if (ret)
847 goto unlock;
848 ret = print_hw_stat(dev, hsa->port_num, stats, hsa->index, buf);
849unlock:
850 mutex_unlock(&stats->lock);
851
852 return ret;
853}
854
855static ssize_t show_stats_lifespan(struct kobject *kobj,
856 struct attribute *attr,
857 char *buf)
858{
859 struct hw_stats_attribute *hsa;
860 struct rdma_hw_stats *stats;
861 int msecs;
862
863 hsa = container_of(attr, struct hw_stats_attribute, attr);
864 if (!hsa->port_num) {
865 struct ib_device *dev = container_of((struct device *)kobj,
866 struct ib_device, dev);
867
868 stats = dev->hw_stats;
869 } else {
870 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
871
872 stats = p->hw_stats;
873 }
874
875 mutex_lock(&stats->lock);
876 msecs = jiffies_to_msecs(stats->lifespan);
877 mutex_unlock(&stats->lock);
878
879 return sprintf(buf, "%d\n", msecs);
880}
881
882static ssize_t set_stats_lifespan(struct kobject *kobj,
883 struct attribute *attr,
884 const char *buf, size_t count)
885{
886 struct hw_stats_attribute *hsa;
887 struct rdma_hw_stats *stats;
888 int msecs;
889 int jiffies;
890 int ret;
891
892 ret = kstrtoint(buf, 10, &msecs);
893 if (ret)
894 return ret;
895 if (msecs < 0 || msecs > 10000)
896 return -EINVAL;
897 jiffies = msecs_to_jiffies(msecs);
898 hsa = container_of(attr, struct hw_stats_attribute, attr);
899 if (!hsa->port_num) {
900 struct ib_device *dev = container_of((struct device *)kobj,
901 struct ib_device, dev);
902
903 stats = dev->hw_stats;
904 } else {
905 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
906
907 stats = p->hw_stats;
908 }
909
910 mutex_lock(&stats->lock);
911 stats->lifespan = jiffies;
912 mutex_unlock(&stats->lock);
913
914 return count;
915}
916
917static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
918{
919 struct attribute **attr;
920
921 sysfs_remove_group(kobj, attr_group);
922
923 for (attr = attr_group->attrs; *attr; attr++)
924 kfree(*attr);
925 kfree(attr_group);
926}
927
928static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
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 = (char *)name;
937 hsa->attr.mode = S_IRUGO;
938 hsa->show = show_hw_stats;
939 hsa->store = NULL;
940 hsa->index = index;
941 hsa->port_num = port_num;
942
943 return &hsa->attr;
944}
945
946static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
947{
948 struct hw_stats_attribute *hsa;
949
950 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
951 if (!hsa)
952 return NULL;
953
954 hsa->attr.name = name;
955 hsa->attr.mode = S_IWUSR | S_IRUGO;
956 hsa->show = show_stats_lifespan;
957 hsa->store = set_stats_lifespan;
958 hsa->index = 0;
959 hsa->port_num = port_num;
960
961 return &hsa->attr;
962}
963
964static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
965 u8 port_num)
966{
967 struct attribute_group *hsag;
968 struct rdma_hw_stats *stats;
969 int i, ret;
970
971 stats = device->ops.alloc_hw_stats(device, port_num);
972
973 if (!stats)
974 return;
975
976 if (!stats->names || stats->num_counters <= 0)
977 goto err_free_stats;
978
979 /*
980 * Two extra attribue elements here, one for the lifespan entry and
981 * one to NULL terminate the list for the sysfs core code
982 */
983 hsag = kzalloc(sizeof(*hsag) +
984 sizeof(void *) * (stats->num_counters + 2),
985 GFP_KERNEL);
986 if (!hsag)
987 goto err_free_stats;
988
989 ret = device->ops.get_hw_stats(device, stats, port_num,
990 stats->num_counters);
991 if (ret != stats->num_counters)
992 goto err_free_hsag;
993
994 stats->timestamp = jiffies;
995
996 hsag->name = "hw_counters";
997 hsag->attrs = (void *)hsag + sizeof(*hsag);
998
999 for (i = 0; i < stats->num_counters; i++) {
1000 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
1001 if (!hsag->attrs[i])
1002 goto err;
1003 sysfs_attr_init(hsag->attrs[i]);
1004 }
1005
1006 mutex_init(&stats->lock);
1007 /* treat an error here as non-fatal */
1008 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
1009 if (hsag->attrs[i])
1010 sysfs_attr_init(hsag->attrs[i]);
1011
1012 if (port) {
1013 struct kobject *kobj = &port->kobj;
1014 ret = sysfs_create_group(kobj, hsag);
1015 if (ret)
1016 goto err;
1017 port->hw_stats_ag = hsag;
1018 port->hw_stats = stats;
1019 if (device->port_data)
1020 device->port_data[port_num].hw_stats = stats;
1021 } else {
1022 struct kobject *kobj = &device->dev.kobj;
1023 ret = sysfs_create_group(kobj, hsag);
1024 if (ret)
1025 goto err;
1026 device->hw_stats_ag = hsag;
1027 device->hw_stats = stats;
1028 }
1029
1030 return;
1031
1032err:
1033 for (; i >= 0; i--)
1034 kfree(hsag->attrs[i]);
1035err_free_hsag:
1036 kfree(hsag);
1037err_free_stats:
1038 kfree(stats);
1039 return;
1040}
1041
1042static int add_port(struct ib_core_device *coredev, int port_num)
1043{
1044 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1045 bool is_full_dev = &device->coredev == coredev;
1046 struct ib_port *p;
1047 struct ib_port_attr attr;
1048 int i;
1049 int ret;
1050
1051 ret = ib_query_port(device, port_num, &attr);
1052 if (ret)
1053 return ret;
1054
1055 p = kzalloc(sizeof *p, GFP_KERNEL);
1056 if (!p)
1057 return -ENOMEM;
1058
1059 p->ibdev = device;
1060 p->port_num = port_num;
1061
1062 ret = kobject_init_and_add(&p->kobj, &port_type,
1063 coredev->ports_kobj,
1064 "%d", port_num);
1065 if (ret) {
1066 goto err_put;
1067 }
1068
1069 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
1070 if (!p->gid_attr_group) {
1071 ret = -ENOMEM;
1072 goto err_put;
1073 }
1074
1075 p->gid_attr_group->port = p;
1076 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1077 &p->kobj, "gid_attrs");
1078 if (ret) {
1079 goto err_put_gid_attrs;
1080 }
1081
1082 if (device->ops.process_mad && is_full_dev) {
1083 p->pma_table = get_counter_table(device, port_num);
1084 ret = sysfs_create_group(&p->kobj, p->pma_table);
1085 if (ret)
1086 goto err_put_gid_attrs;
1087 }
1088
1089 p->gid_group.name = "gids";
1090 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1091 if (!p->gid_group.attrs) {
1092 ret = -ENOMEM;
1093 goto err_remove_pma;
1094 }
1095
1096 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1097 if (ret)
1098 goto err_free_gid;
1099
1100 p->gid_attr_group->ndev.name = "ndevs";
1101 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1102 attr.gid_tbl_len);
1103 if (!p->gid_attr_group->ndev.attrs) {
1104 ret = -ENOMEM;
1105 goto err_remove_gid;
1106 }
1107
1108 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1109 &p->gid_attr_group->ndev);
1110 if (ret)
1111 goto err_free_gid_ndev;
1112
1113 p->gid_attr_group->type.name = "types";
1114 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1115 attr.gid_tbl_len);
1116 if (!p->gid_attr_group->type.attrs) {
1117 ret = -ENOMEM;
1118 goto err_remove_gid_ndev;
1119 }
1120
1121 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1122 &p->gid_attr_group->type);
1123 if (ret)
1124 goto err_free_gid_type;
1125
1126 if (attr.pkey_tbl_len) {
1127 p->pkey_group = kzalloc(sizeof(*p->pkey_group), GFP_KERNEL);
1128 if (!p->pkey_group) {
1129 ret = -ENOMEM;
1130 goto err_remove_gid_type;
1131 }
1132
1133 p->pkey_group->name = "pkeys";
1134 p->pkey_group->attrs = alloc_group_attrs(show_port_pkey,
1135 attr.pkey_tbl_len);
1136 if (!p->pkey_group->attrs) {
1137 ret = -ENOMEM;
1138 goto err_free_pkey_group;
1139 }
1140
1141 ret = sysfs_create_group(&p->kobj, p->pkey_group);
1142 if (ret)
1143 goto err_free_pkey;
1144 }
1145
1146
1147 if (device->ops.init_port && is_full_dev) {
1148 ret = device->ops.init_port(device, port_num, &p->kobj);
1149 if (ret)
1150 goto err_remove_pkey;
1151 }
1152
1153 /*
1154 * If port == 0, it means hw_counters are per device and not per
1155 * port, so holder should be device. Therefore skip per port conunter
1156 * initialization.
1157 */
1158 if (device->ops.alloc_hw_stats && port_num && is_full_dev)
1159 setup_hw_stats(device, p, port_num);
1160
1161 list_add_tail(&p->kobj.entry, &coredev->port_list);
1162
1163 kobject_uevent(&p->kobj, KOBJ_ADD);
1164 return 0;
1165
1166err_remove_pkey:
1167 if (p->pkey_group)
1168 sysfs_remove_group(&p->kobj, p->pkey_group);
1169
1170err_free_pkey:
1171 if (p->pkey_group) {
1172 for (i = 0; i < attr.pkey_tbl_len; ++i)
1173 kfree(p->pkey_group->attrs[i]);
1174
1175 kfree(p->pkey_group->attrs);
1176 p->pkey_group->attrs = NULL;
1177 }
1178
1179err_free_pkey_group:
1180 kfree(p->pkey_group);
1181
1182err_remove_gid_type:
1183 sysfs_remove_group(&p->gid_attr_group->kobj,
1184 &p->gid_attr_group->type);
1185
1186err_free_gid_type:
1187 for (i = 0; i < attr.gid_tbl_len; ++i)
1188 kfree(p->gid_attr_group->type.attrs[i]);
1189
1190 kfree(p->gid_attr_group->type.attrs);
1191 p->gid_attr_group->type.attrs = NULL;
1192
1193err_remove_gid_ndev:
1194 sysfs_remove_group(&p->gid_attr_group->kobj,
1195 &p->gid_attr_group->ndev);
1196
1197err_free_gid_ndev:
1198 for (i = 0; i < attr.gid_tbl_len; ++i)
1199 kfree(p->gid_attr_group->ndev.attrs[i]);
1200
1201 kfree(p->gid_attr_group->ndev.attrs);
1202 p->gid_attr_group->ndev.attrs = NULL;
1203
1204err_remove_gid:
1205 sysfs_remove_group(&p->kobj, &p->gid_group);
1206
1207err_free_gid:
1208 for (i = 0; i < attr.gid_tbl_len; ++i)
1209 kfree(p->gid_group.attrs[i]);
1210
1211 kfree(p->gid_group.attrs);
1212 p->gid_group.attrs = NULL;
1213
1214err_remove_pma:
1215 if (p->pma_table)
1216 sysfs_remove_group(&p->kobj, p->pma_table);
1217
1218err_put_gid_attrs:
1219 kobject_put(&p->gid_attr_group->kobj);
1220
1221err_put:
1222 kobject_put(&p->kobj);
1223 return ret;
1224}
1225
1226static ssize_t node_type_show(struct device *device,
1227 struct device_attribute *attr, char *buf)
1228{
1229 struct ib_device *dev = rdma_device_to_ibdev(device);
1230
1231 switch (dev->node_type) {
1232 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
1233 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
1234 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
1235 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1236 case RDMA_NODE_UNSPECIFIED: return sprintf(buf, "%d: unspecified\n", dev->node_type);
1237 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1238 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1239 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1240 }
1241}
1242static DEVICE_ATTR_RO(node_type);
1243
1244static ssize_t sys_image_guid_show(struct device *device,
1245 struct device_attribute *dev_attr, char *buf)
1246{
1247 struct ib_device *dev = rdma_device_to_ibdev(device);
1248
1249 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1250 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1251 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1252 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1253 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1254}
1255static DEVICE_ATTR_RO(sys_image_guid);
1256
1257static ssize_t node_guid_show(struct device *device,
1258 struct device_attribute *attr, char *buf)
1259{
1260 struct ib_device *dev = rdma_device_to_ibdev(device);
1261
1262 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1263 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1264 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1265 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1266 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1267}
1268static DEVICE_ATTR_RO(node_guid);
1269
1270static ssize_t node_desc_show(struct device *device,
1271 struct device_attribute *attr, char *buf)
1272{
1273 struct ib_device *dev = rdma_device_to_ibdev(device);
1274
1275 return sprintf(buf, "%.64s\n", dev->node_desc);
1276}
1277
1278static ssize_t node_desc_store(struct device *device,
1279 struct device_attribute *attr,
1280 const char *buf, size_t count)
1281{
1282 struct ib_device *dev = rdma_device_to_ibdev(device);
1283 struct ib_device_modify desc = {};
1284 int ret;
1285
1286 if (!dev->ops.modify_device)
1287 return -EOPNOTSUPP;
1288
1289 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1290 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1291 if (ret)
1292 return ret;
1293
1294 return count;
1295}
1296static DEVICE_ATTR_RW(node_desc);
1297
1298static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr,
1299 char *buf)
1300{
1301 struct ib_device *dev = rdma_device_to_ibdev(device);
1302
1303 ib_get_device_fw_str(dev, buf);
1304 strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX);
1305 return strlen(buf);
1306}
1307static DEVICE_ATTR_RO(fw_ver);
1308
1309static struct attribute *ib_dev_attrs[] = {
1310 &dev_attr_node_type.attr,
1311 &dev_attr_node_guid.attr,
1312 &dev_attr_sys_image_guid.attr,
1313 &dev_attr_fw_ver.attr,
1314 &dev_attr_node_desc.attr,
1315 NULL,
1316};
1317
1318const struct attribute_group ib_dev_attr_group = {
1319 .attrs = ib_dev_attrs,
1320};
1321
1322void ib_free_port_attrs(struct ib_core_device *coredev)
1323{
1324 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1325 bool is_full_dev = &device->coredev == coredev;
1326 struct kobject *p, *t;
1327
1328 list_for_each_entry_safe(p, t, &coredev->port_list, entry) {
1329 struct ib_port *port = container_of(p, struct ib_port, kobj);
1330
1331 list_del(&p->entry);
1332 if (port->hw_stats_ag)
1333 free_hsag(&port->kobj, port->hw_stats_ag);
1334 kfree(port->hw_stats);
1335 if (device->port_data && is_full_dev)
1336 device->port_data[port->port_num].hw_stats = NULL;
1337
1338 if (port->pma_table)
1339 sysfs_remove_group(p, port->pma_table);
1340 if (port->pkey_group)
1341 sysfs_remove_group(p, port->pkey_group);
1342 sysfs_remove_group(p, &port->gid_group);
1343 sysfs_remove_group(&port->gid_attr_group->kobj,
1344 &port->gid_attr_group->ndev);
1345 sysfs_remove_group(&port->gid_attr_group->kobj,
1346 &port->gid_attr_group->type);
1347 kobject_put(&port->gid_attr_group->kobj);
1348 kobject_put(p);
1349 }
1350
1351 kobject_put(coredev->ports_kobj);
1352}
1353
1354int ib_setup_port_attrs(struct ib_core_device *coredev)
1355{
1356 struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1357 unsigned int port;
1358 int ret;
1359
1360 coredev->ports_kobj = kobject_create_and_add("ports",
1361 &coredev->dev.kobj);
1362 if (!coredev->ports_kobj)
1363 return -ENOMEM;
1364
1365 rdma_for_each_port (device, port) {
1366 ret = add_port(coredev, port);
1367 if (ret)
1368 goto err_put;
1369 }
1370
1371 return 0;
1372
1373err_put:
1374 ib_free_port_attrs(coredev);
1375 return ret;
1376}
1377
1378int ib_device_register_sysfs(struct ib_device *device)
1379{
1380 int ret;
1381
1382 ret = ib_setup_port_attrs(&device->coredev);
1383 if (ret)
1384 return ret;
1385
1386 if (device->ops.alloc_hw_stats)
1387 setup_hw_stats(device, NULL, 0);
1388
1389 return 0;
1390}
1391
1392void ib_device_unregister_sysfs(struct ib_device *device)
1393{
1394 if (device->hw_stats_ag)
1395 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1396 kfree(device->hw_stats);
1397
1398 ib_free_port_attrs(&device->coredev);
1399}
1400
1401/**
1402 * ib_port_register_module_stat - add module counters under relevant port
1403 * of IB device.
1404 *
1405 * @device: IB device to add counters
1406 * @port_num: valid port number
1407 * @kobj: pointer to the kobject to initialize
1408 * @ktype: pointer to the ktype for this kobject.
1409 * @name: the name of the kobject
1410 */
1411int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
1412 struct kobject *kobj, struct kobj_type *ktype,
1413 const char *name)
1414{
1415 struct kobject *p, *t;
1416 int ret;
1417
1418 list_for_each_entry_safe(p, t, &device->coredev.port_list, entry) {
1419 struct ib_port *port = container_of(p, struct ib_port, kobj);
1420
1421 if (port->port_num != port_num)
1422 continue;
1423
1424 ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s",
1425 name);
1426 if (ret) {
1427 kobject_put(kobj);
1428 return ret;
1429 }
1430 }
1431
1432 return 0;
1433}
1434EXPORT_SYMBOL(ib_port_register_module_stat);
1435
1436/**
1437 * ib_port_unregister_module_stat - release module counters
1438 * @kobj: pointer to the kobject to release
1439 */
1440void ib_port_unregister_module_stat(struct kobject *kobj)
1441{
1442 kobject_put(kobj);
1443}
1444EXPORT_SYMBOL(ib_port_unregister_module_stat);