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Linux 3.18.86
[linux/fpc-iii.git] / drivers / infiniband / core / sysfs.c
blobcbd0383f622e0311bd4f56652648609604cb94c4
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
41 #include <rdma/ib_mad.h>
42
43 struct ib_port {
44 struct kobject kobj;
45 struct ib_device *ibdev;
46 struct attribute_group gid_group;
47 struct attribute_group pkey_group;
48 u8 port_num;
49 };
50
51 struct port_attribute {
52 struct attribute attr;
53 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
54 ssize_t (*store)(struct ib_port *, struct port_attribute *,
55 const char *buf, size_t count);
56 };
57
58 #define PORT_ATTR(_name, _mode, _show, _store) \
59 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
60
61 #define PORT_ATTR_RO(_name) \
62 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
63
64 struct port_table_attribute {
65 struct port_attribute attr;
66 char name[8];
67 int index;
68 };
69
70 static ssize_t port_attr_show(struct kobject *kobj,
71 struct attribute *attr, char *buf)
72 {
73 struct port_attribute *port_attr =
74 container_of(attr, struct port_attribute, attr);
75 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
76
77 if (!port_attr->show)
78 return -EIO;
79
80 return port_attr->show(p, port_attr, buf);
81 }
82
83 static const struct sysfs_ops port_sysfs_ops = {
84 .show = port_attr_show
85 };
86
87 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
88 char *buf)
89 {
90 struct ib_port_attr attr;
91 ssize_t ret;
92
93 static const char *state_name[] = {
94 [IB_PORT_NOP] = "NOP",
95 [IB_PORT_DOWN] = "DOWN",
96 [IB_PORT_INIT] = "INIT",
97 [IB_PORT_ARMED] = "ARMED",
98 [IB_PORT_ACTIVE] = "ACTIVE",
99 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
100 };
101
102 ret = ib_query_port(p->ibdev, p->port_num, &attr);
103 if (ret)
104 return ret;
105
106 return sprintf(buf, "%d: %s\n", attr.state,
107 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
108 state_name[attr.state] : "UNKNOWN");
109 }
110
111 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
112 char *buf)
113 {
114 struct ib_port_attr attr;
115 ssize_t ret;
116
117 ret = ib_query_port(p->ibdev, p->port_num, &attr);
118 if (ret)
119 return ret;
120
121 return sprintf(buf, "0x%x\n", attr.lid);
122 }
123
124 static ssize_t lid_mask_count_show(struct ib_port *p,
125 struct port_attribute *unused,
126 char *buf)
127 {
128 struct ib_port_attr attr;
129 ssize_t ret;
130
131 ret = ib_query_port(p->ibdev, p->port_num, &attr);
132 if (ret)
133 return ret;
134
135 return sprintf(buf, "%d\n", attr.lmc);
136 }
137
138 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
139 char *buf)
140 {
141 struct ib_port_attr attr;
142 ssize_t ret;
143
144 ret = ib_query_port(p->ibdev, p->port_num, &attr);
145 if (ret)
146 return ret;
147
148 return sprintf(buf, "0x%x\n", attr.sm_lid);
149 }
150
151 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
152 char *buf)
153 {
154 struct ib_port_attr attr;
155 ssize_t ret;
156
157 ret = ib_query_port(p->ibdev, p->port_num, &attr);
158 if (ret)
159 return ret;
160
161 return sprintf(buf, "%d\n", attr.sm_sl);
162 }
163
164 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
165 char *buf)
166 {
167 struct ib_port_attr attr;
168 ssize_t ret;
169
170 ret = ib_query_port(p->ibdev, p->port_num, &attr);
171 if (ret)
172 return ret;
173
174 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
175 }
176
177 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
178 char *buf)
179 {
180 struct ib_port_attr attr;
181 char *speed = "";
182 int rate; /* in deci-Gb/sec */
183 ssize_t ret;
184
185 ret = ib_query_port(p->ibdev, p->port_num, &attr);
186 if (ret)
187 return ret;
188
189 switch (attr.active_speed) {
190 case IB_SPEED_DDR:
191 speed = " DDR";
192 rate = 50;
193 break;
194 case IB_SPEED_QDR:
195 speed = " QDR";
196 rate = 100;
197 break;
198 case IB_SPEED_FDR10:
199 speed = " FDR10";
200 rate = 100;
201 break;
202 case IB_SPEED_FDR:
203 speed = " FDR";
204 rate = 140;
205 break;
206 case IB_SPEED_EDR:
207 speed = " EDR";
208 rate = 250;
209 break;
210 case IB_SPEED_SDR:
211 default: /* default to SDR for invalid rates */
212 rate = 25;
213 break;
214 }
215
216 rate *= ib_width_enum_to_int(attr.active_width);
217 if (rate < 0)
218 return -EINVAL;
219
220 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
221 rate / 10, rate % 10 ? ".5" : "",
222 ib_width_enum_to_int(attr.active_width), speed);
223 }
224
225 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
226 char *buf)
227 {
228 struct ib_port_attr attr;
229
230 ssize_t ret;
231
232 ret = ib_query_port(p->ibdev, p->port_num, &attr);
233 if (ret)
234 return ret;
235
236 switch (attr.phys_state) {
237 case 1: return sprintf(buf, "1: Sleep\n");
238 case 2: return sprintf(buf, "2: Polling\n");
239 case 3: return sprintf(buf, "3: Disabled\n");
240 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
241 case 5: return sprintf(buf, "5: LinkUp\n");
242 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
243 case 7: return sprintf(buf, "7: Phy Test\n");
244 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
245 }
246 }
247
248 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
249 char *buf)
250 {
251 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
252 case IB_LINK_LAYER_INFINIBAND:
253 return sprintf(buf, "%s\n", "InfiniBand");
254 case IB_LINK_LAYER_ETHERNET:
255 return sprintf(buf, "%s\n", "Ethernet");
256 default:
257 return sprintf(buf, "%s\n", "Unknown");
258 }
259 }
260
261 static PORT_ATTR_RO(state);
262 static PORT_ATTR_RO(lid);
263 static PORT_ATTR_RO(lid_mask_count);
264 static PORT_ATTR_RO(sm_lid);
265 static PORT_ATTR_RO(sm_sl);
266 static PORT_ATTR_RO(cap_mask);
267 static PORT_ATTR_RO(rate);
268 static PORT_ATTR_RO(phys_state);
269 static PORT_ATTR_RO(link_layer);
270
271 static struct attribute *port_default_attrs[] = {
272 &port_attr_state.attr,
273 &port_attr_lid.attr,
274 &port_attr_lid_mask_count.attr,
275 &port_attr_sm_lid.attr,
276 &port_attr_sm_sl.attr,
277 &port_attr_cap_mask.attr,
278 &port_attr_rate.attr,
279 &port_attr_phys_state.attr,
280 &port_attr_link_layer.attr,
281 NULL
282 };
283
284 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
285 char *buf)
286 {
287 struct port_table_attribute *tab_attr =
288 container_of(attr, struct port_table_attribute, attr);
289 union ib_gid gid;
290 ssize_t ret;
291
292 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
293 if (ret)
294 return ret;
295
296 return sprintf(buf, "%pI6\n", gid.raw);
297 }
298
299 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
300 char *buf)
301 {
302 struct port_table_attribute *tab_attr =
303 container_of(attr, struct port_table_attribute, attr);
304 u16 pkey;
305 ssize_t ret;
306
307 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
308 if (ret)
309 return ret;
310
311 return sprintf(buf, "0x%04x\n", pkey);
312 }
313
314 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
315 struct port_table_attribute port_pma_attr_##_name = { \
316 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
317 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \
318 }
319
320 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
321 char *buf)
322 {
323 struct port_table_attribute *tab_attr =
324 container_of(attr, struct port_table_attribute, attr);
325 int offset = tab_attr->index & 0xffff;
326 int width = (tab_attr->index >> 16) & 0xff;
327 struct ib_mad *in_mad = NULL;
328 struct ib_mad *out_mad = NULL;
329 ssize_t ret;
330
331 if (!p->ibdev->process_mad)
332 return sprintf(buf, "N/A (no PMA)\n");
333
334 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
335 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
336 if (!in_mad || !out_mad) {
337 ret = -ENOMEM;
338 goto out;
339 }
340
341 in_mad->mad_hdr.base_version = 1;
342 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
343 in_mad->mad_hdr.class_version = 1;
344 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
345 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */
346
347 in_mad->data[41] = p->port_num; /* PortSelect field */
348
349 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
350 p->port_num, NULL, NULL, in_mad, out_mad) &
351 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
352 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
353 ret = -EINVAL;
354 goto out;
355 }
356
357 switch (width) {
358 case 4:
359 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
360 (4 - (offset % 8))) & 0xf);
361 break;
362 case 8:
363 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
364 break;
365 case 16:
366 ret = sprintf(buf, "%u\n",
367 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
368 break;
369 case 32:
370 ret = sprintf(buf, "%u\n",
371 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
372 break;
373 default:
374 ret = 0;
375 }
376
377 out:
378 kfree(in_mad);
379 kfree(out_mad);
380
381 return ret;
382 }
383
384 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
385 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
386 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
387 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
388 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
389 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
390 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
391 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
392 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
393 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
394 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
395 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
396 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
397 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
398 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
399 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
400
401 static struct attribute *pma_attrs[] = {
402 &port_pma_attr_symbol_error.attr.attr,
403 &port_pma_attr_link_error_recovery.attr.attr,
404 &port_pma_attr_link_downed.attr.attr,
405 &port_pma_attr_port_rcv_errors.attr.attr,
406 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
407 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
408 &port_pma_attr_port_xmit_discards.attr.attr,
409 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
410 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
411 &port_pma_attr_local_link_integrity_errors.attr.attr,
412 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
413 &port_pma_attr_VL15_dropped.attr.attr,
414 &port_pma_attr_port_xmit_data.attr.attr,
415 &port_pma_attr_port_rcv_data.attr.attr,
416 &port_pma_attr_port_xmit_packets.attr.attr,
417 &port_pma_attr_port_rcv_packets.attr.attr,
418 NULL
419 };
420
421 static struct attribute_group pma_group = {
422 .name = "counters",
423 .attrs = pma_attrs
424 };
425
426 static void ib_port_release(struct kobject *kobj)
427 {
428 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
429 struct attribute *a;
430 int i;
431
432 if (p->gid_group.attrs) {
433 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
434 kfree(a);
435
436 kfree(p->gid_group.attrs);
437 }
438
439 if (p->pkey_group.attrs) {
440 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
441 kfree(a);
442
443 kfree(p->pkey_group.attrs);
444 }
445
446 kfree(p);
447 }
448
449 static struct kobj_type port_type = {
450 .release = ib_port_release,
451 .sysfs_ops = &port_sysfs_ops,
452 .default_attrs = port_default_attrs
453 };
454
455 static void ib_device_release(struct device *device)
456 {
457 struct ib_device *dev = container_of(device, struct ib_device, dev);
458
459 kfree(dev);
460 }
461
462 static int ib_device_uevent(struct device *device,
463 struct kobj_uevent_env *env)
464 {
465 struct ib_device *dev = container_of(device, struct ib_device, dev);
466
467 if (add_uevent_var(env, "NAME=%s", dev->name))
468 return -ENOMEM;
469
470 /*
471 * It would be nice to pass the node GUID with the event...
472 */
473
474 return 0;
475 }
476
477 static struct attribute **
478 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
479 struct port_attribute *, char *buf),
480 int len)
481 {
482 struct attribute **tab_attr;
483 struct port_table_attribute *element;
484 int i;
485
486 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
487 if (!tab_attr)
488 return NULL;
489
490 for (i = 0; i < len; i++) {
491 element = kzalloc(sizeof(struct port_table_attribute),
492 GFP_KERNEL);
493 if (!element)
494 goto err;
495
496 if (snprintf(element->name, sizeof(element->name),
497 "%d", i) >= sizeof(element->name)) {
498 kfree(element);
499 goto err;
500 }
501
502 element->attr.attr.name = element->name;
503 element->attr.attr.mode = S_IRUGO;
504 element->attr.show = show;
505 element->index = i;
506 sysfs_attr_init(&element->attr.attr);
507
508 tab_attr[i] = &element->attr.attr;
509 }
510
511 return tab_attr;
512
513 err:
514 while (--i >= 0)
515 kfree(tab_attr[i]);
516 kfree(tab_attr);
517 return NULL;
518 }
519
520 static int add_port(struct ib_device *device, int port_num,
521 int (*port_callback)(struct ib_device *,
522 u8, struct kobject *))
523 {
524 struct ib_port *p;
525 struct ib_port_attr attr;
526 int i;
527 int ret;
528
529 ret = ib_query_port(device, port_num, &attr);
530 if (ret)
531 return ret;
532
533 p = kzalloc(sizeof *p, GFP_KERNEL);
534 if (!p)
535 return -ENOMEM;
536
537 p->ibdev = device;
538 p->port_num = port_num;
539
540 ret = kobject_init_and_add(&p->kobj, &port_type,
541 device->ports_parent,
542 "%d", port_num);
543 if (ret) {
544 kfree(p);
545 return ret;
546 }
547
548 ret = sysfs_create_group(&p->kobj, &pma_group);
549 if (ret)
550 goto err_put;
551
552 p->gid_group.name = "gids";
553 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
554 if (!p->gid_group.attrs) {
555 ret = -ENOMEM;
556 goto err_remove_pma;
557 }
558
559 ret = sysfs_create_group(&p->kobj, &p->gid_group);
560 if (ret)
561 goto err_free_gid;
562
563 p->pkey_group.name = "pkeys";
564 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
565 attr.pkey_tbl_len);
566 if (!p->pkey_group.attrs) {
567 ret = -ENOMEM;
568 goto err_remove_gid;
569 }
570
571 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
572 if (ret)
573 goto err_free_pkey;
574
575 if (port_callback) {
576 ret = port_callback(device, port_num, &p->kobj);
577 if (ret)
578 goto err_remove_pkey;
579 }
580
581 list_add_tail(&p->kobj.entry, &device->port_list);
582
583 kobject_uevent(&p->kobj, KOBJ_ADD);
584 return 0;
585
586 err_remove_pkey:
587 sysfs_remove_group(&p->kobj, &p->pkey_group);
588
589 err_free_pkey:
590 for (i = 0; i < attr.pkey_tbl_len; ++i)
591 kfree(p->pkey_group.attrs[i]);
592
593 kfree(p->pkey_group.attrs);
594 p->pkey_group.attrs = NULL;
595
596 err_remove_gid:
597 sysfs_remove_group(&p->kobj, &p->gid_group);
598
599 err_free_gid:
600 for (i = 0; i < attr.gid_tbl_len; ++i)
601 kfree(p->gid_group.attrs[i]);
602
603 kfree(p->gid_group.attrs);
604 p->gid_group.attrs = NULL;
605
606 err_remove_pma:
607 sysfs_remove_group(&p->kobj, &pma_group);
608
609 err_put:
610 kobject_put(&p->kobj);
611 return ret;
612 }
613
614 static ssize_t show_node_type(struct device *device,
615 struct device_attribute *attr, char *buf)
616 {
617 struct ib_device *dev = container_of(device, struct ib_device, dev);
618
619 switch (dev->node_type) {
620 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
621 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
622 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
623 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
624 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
625 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
626 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
627 }
628 }
629
630 static ssize_t show_sys_image_guid(struct device *device,
631 struct device_attribute *dev_attr, char *buf)
632 {
633 struct ib_device *dev = container_of(device, struct ib_device, dev);
634 struct ib_device_attr attr;
635 ssize_t ret;
636
637 ret = ib_query_device(dev, &attr);
638 if (ret)
639 return ret;
640
641 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
642 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
643 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
644 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
645 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
646 }
647
648 static ssize_t show_node_guid(struct device *device,
649 struct device_attribute *attr, char *buf)
650 {
651 struct ib_device *dev = container_of(device, struct ib_device, dev);
652
653 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
654 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
655 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
656 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
657 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
658 }
659
660 static ssize_t show_node_desc(struct device *device,
661 struct device_attribute *attr, char *buf)
662 {
663 struct ib_device *dev = container_of(device, struct ib_device, dev);
664
665 return sprintf(buf, "%.64s\n", dev->node_desc);
666 }
667
668 static ssize_t set_node_desc(struct device *device,
669 struct device_attribute *attr,
670 const char *buf, size_t count)
671 {
672 struct ib_device *dev = container_of(device, struct ib_device, dev);
673 struct ib_device_modify desc = {};
674 int ret;
675
676 if (!dev->modify_device)
677 return -EIO;
678
679 memcpy(desc.node_desc, buf, min_t(int, count, 64));
680 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
681 if (ret)
682 return ret;
683
684 return count;
685 }
686
687 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
688 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
689 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
690 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
691
692 static struct device_attribute *ib_class_attributes[] = {
693 &dev_attr_node_type,
694 &dev_attr_sys_image_guid,
695 &dev_attr_node_guid,
696 &dev_attr_node_desc
697 };
698
699 static struct class ib_class = {
700 .name = "infiniband",
701 .dev_release = ib_device_release,
702 .dev_uevent = ib_device_uevent,
703 };
704
705 /* Show a given an attribute in the statistics group */
706 static ssize_t show_protocol_stat(const struct device *device,
707 struct device_attribute *attr, char *buf,
708 unsigned offset)
709 {
710 struct ib_device *dev = container_of(device, struct ib_device, dev);
711 union rdma_protocol_stats stats;
712 ssize_t ret;
713
714 ret = dev->get_protocol_stats(dev, &stats);
715 if (ret)
716 return ret;
717
718 return sprintf(buf, "%llu\n",
719 (unsigned long long) ((u64 *) &stats)[offset]);
720 }
721
722 /* generate a read-only iwarp statistics attribute */
723 #define IW_STATS_ENTRY(name) \
724 static ssize_t show_##name(struct device *device, \
725 struct device_attribute *attr, char *buf) \
726 { \
727 return show_protocol_stat(device, attr, buf, \
728 offsetof(struct iw_protocol_stats, name) / \
729 sizeof (u64)); \
730 } \
731 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
732
733 IW_STATS_ENTRY(ipInReceives);
734 IW_STATS_ENTRY(ipInHdrErrors);
735 IW_STATS_ENTRY(ipInTooBigErrors);
736 IW_STATS_ENTRY(ipInNoRoutes);
737 IW_STATS_ENTRY(ipInAddrErrors);
738 IW_STATS_ENTRY(ipInUnknownProtos);
739 IW_STATS_ENTRY(ipInTruncatedPkts);
740 IW_STATS_ENTRY(ipInDiscards);
741 IW_STATS_ENTRY(ipInDelivers);
742 IW_STATS_ENTRY(ipOutForwDatagrams);
743 IW_STATS_ENTRY(ipOutRequests);
744 IW_STATS_ENTRY(ipOutDiscards);
745 IW_STATS_ENTRY(ipOutNoRoutes);
746 IW_STATS_ENTRY(ipReasmTimeout);
747 IW_STATS_ENTRY(ipReasmReqds);
748 IW_STATS_ENTRY(ipReasmOKs);
749 IW_STATS_ENTRY(ipReasmFails);
750 IW_STATS_ENTRY(ipFragOKs);
751 IW_STATS_ENTRY(ipFragFails);
752 IW_STATS_ENTRY(ipFragCreates);
753 IW_STATS_ENTRY(ipInMcastPkts);
754 IW_STATS_ENTRY(ipOutMcastPkts);
755 IW_STATS_ENTRY(ipInBcastPkts);
756 IW_STATS_ENTRY(ipOutBcastPkts);
757 IW_STATS_ENTRY(tcpRtoAlgorithm);
758 IW_STATS_ENTRY(tcpRtoMin);
759 IW_STATS_ENTRY(tcpRtoMax);
760 IW_STATS_ENTRY(tcpMaxConn);
761 IW_STATS_ENTRY(tcpActiveOpens);
762 IW_STATS_ENTRY(tcpPassiveOpens);
763 IW_STATS_ENTRY(tcpAttemptFails);
764 IW_STATS_ENTRY(tcpEstabResets);
765 IW_STATS_ENTRY(tcpCurrEstab);
766 IW_STATS_ENTRY(tcpInSegs);
767 IW_STATS_ENTRY(tcpOutSegs);
768 IW_STATS_ENTRY(tcpRetransSegs);
769 IW_STATS_ENTRY(tcpInErrs);
770 IW_STATS_ENTRY(tcpOutRsts);
771
772 static struct attribute *iw_proto_stats_attrs[] = {
773 &dev_attr_ipInReceives.attr,
774 &dev_attr_ipInHdrErrors.attr,
775 &dev_attr_ipInTooBigErrors.attr,
776 &dev_attr_ipInNoRoutes.attr,
777 &dev_attr_ipInAddrErrors.attr,
778 &dev_attr_ipInUnknownProtos.attr,
779 &dev_attr_ipInTruncatedPkts.attr,
780 &dev_attr_ipInDiscards.attr,
781 &dev_attr_ipInDelivers.attr,
782 &dev_attr_ipOutForwDatagrams.attr,
783 &dev_attr_ipOutRequests.attr,
784 &dev_attr_ipOutDiscards.attr,
785 &dev_attr_ipOutNoRoutes.attr,
786 &dev_attr_ipReasmTimeout.attr,
787 &dev_attr_ipReasmReqds.attr,
788 &dev_attr_ipReasmOKs.attr,
789 &dev_attr_ipReasmFails.attr,
790 &dev_attr_ipFragOKs.attr,
791 &dev_attr_ipFragFails.attr,
792 &dev_attr_ipFragCreates.attr,
793 &dev_attr_ipInMcastPkts.attr,
794 &dev_attr_ipOutMcastPkts.attr,
795 &dev_attr_ipInBcastPkts.attr,
796 &dev_attr_ipOutBcastPkts.attr,
797 &dev_attr_tcpRtoAlgorithm.attr,
798 &dev_attr_tcpRtoMin.attr,
799 &dev_attr_tcpRtoMax.attr,
800 &dev_attr_tcpMaxConn.attr,
801 &dev_attr_tcpActiveOpens.attr,
802 &dev_attr_tcpPassiveOpens.attr,
803 &dev_attr_tcpAttemptFails.attr,
804 &dev_attr_tcpEstabResets.attr,
805 &dev_attr_tcpCurrEstab.attr,
806 &dev_attr_tcpInSegs.attr,
807 &dev_attr_tcpOutSegs.attr,
808 &dev_attr_tcpRetransSegs.attr,
809 &dev_attr_tcpInErrs.attr,
810 &dev_attr_tcpOutRsts.attr,
811 NULL
812 };
813
814 static struct attribute_group iw_stats_group = {
815 .name = "proto_stats",
816 .attrs = iw_proto_stats_attrs,
817 };
818
819 static void free_port_list_attributes(struct ib_device *device)
820 {
821 struct kobject *p, *t;
822
823 list_for_each_entry_safe(p, t, &device->port_list, entry) {
824 struct ib_port *port = container_of(p, struct ib_port, kobj);
825 list_del(&p->entry);
826 sysfs_remove_group(p, &pma_group);
827 sysfs_remove_group(p, &port->pkey_group);
828 sysfs_remove_group(p, &port->gid_group);
829 kobject_put(p);
830 }
831
832 kobject_put(device->ports_parent);
833 }
834
835 int ib_device_register_sysfs(struct ib_device *device,
836 int (*port_callback)(struct ib_device *,
837 u8, struct kobject *))
838 {
839 struct device *class_dev = &device->dev;
840 int ret;
841 int i;
842
843 class_dev->class = &ib_class;
844 class_dev->parent = device->dma_device;
845 dev_set_name(class_dev, "%s", device->name);
846 dev_set_drvdata(class_dev, device);
847
848 INIT_LIST_HEAD(&device->port_list);
849
850 ret = device_register(class_dev);
851 if (ret)
852 goto err;
853
854 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
855 ret = device_create_file(class_dev, ib_class_attributes[i]);
856 if (ret)
857 goto err_unregister;
858 }
859
860 device->ports_parent = kobject_create_and_add("ports",
861 &class_dev->kobj);
862 if (!device->ports_parent) {
863 ret = -ENOMEM;
864 goto err_put;
865 }
866
867 if (device->node_type == RDMA_NODE_IB_SWITCH) {
868 ret = add_port(device, 0, port_callback);
869 if (ret)
870 goto err_put;
871 } else {
872 for (i = 1; i <= device->phys_port_cnt; ++i) {
873 ret = add_port(device, i, port_callback);
874 if (ret)
875 goto err_put;
876 }
877 }
878
879 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {
880 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);
881 if (ret)
882 goto err_put;
883 }
884
885 return 0;
886
887 err_put:
888 free_port_list_attributes(device);
889
890 err_unregister:
891 device_unregister(class_dev);
892
893 err:
894 return ret;
895 }
896
897 void ib_device_unregister_sysfs(struct ib_device *device)
898 {
899 /* Hold kobject until ib_dealloc_device() */
900 struct kobject *kobj_dev = kobject_get(&device->dev.kobj);
901 int i;
902
903 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats)
904 sysfs_remove_group(kobj_dev, &iw_stats_group);
905
906 free_port_list_attributes(device);
907
908 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
909 device_remove_file(&device->dev, ib_class_attributes[i]);
910
911 device_unregister(&device->dev);
912 }
913
914 int ib_sysfs_setup(void)
915 {
916 return class_register(&ib_class);
917 }
918
919 void ib_sysfs_cleanup(void)
920 {
921 class_unregister(&ib_class);
922 }
Linux with added FPC-III support