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USB: serial: fix whitespace issues
[zen-stable.git] / drivers / infiniband / core / sysfs.c
blobc61bca30fd2dd3d06aa0cc9b6f7d729515af606f
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;
183 ssize_t ret;
184
185 ret = ib_query_port(p->ibdev, p->port_num, &attr);
186 if (ret)
187 return ret;
188
189 rate = (25 * attr.active_speed) / 10;
190
191 switch (attr.active_speed) {
192 case 2:
193 speed = " DDR";
194 break;
195 case 4:
196 speed = " QDR";
197 break;
198 case 8:
199 speed = " FDR10";
200 rate = 10;
201 break;
202 case 16:
203 speed = " FDR";
204 rate = 14;
205 break;
206 case 32:
207 speed = " EDR";
208 rate = 25;
209 break;
210 }
211
212 rate *= ib_width_enum_to_int(attr.active_width);
213 if (rate < 0)
214 return -EINVAL;
215
216 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
217 rate, (attr.active_speed == 1) ? ".5" : "",
218 ib_width_enum_to_int(attr.active_width), speed);
219 }
220
221 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
222 char *buf)
223 {
224 struct ib_port_attr attr;
225
226 ssize_t ret;
227
228 ret = ib_query_port(p->ibdev, p->port_num, &attr);
229 if (ret)
230 return ret;
231
232 switch (attr.phys_state) {
233 case 1: return sprintf(buf, "1: Sleep\n");
234 case 2: return sprintf(buf, "2: Polling\n");
235 case 3: return sprintf(buf, "3: Disabled\n");
236 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
237 case 5: return sprintf(buf, "5: LinkUp\n");
238 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
239 case 7: return sprintf(buf, "7: Phy Test\n");
240 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
241 }
242 }
243
244 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
245 char *buf)
246 {
247 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
248 case IB_LINK_LAYER_INFINIBAND:
249 return sprintf(buf, "%s\n", "InfiniBand");
250 case IB_LINK_LAYER_ETHERNET:
251 return sprintf(buf, "%s\n", "Ethernet");
252 default:
253 return sprintf(buf, "%s\n", "Unknown");
254 }
255 }
256
257 static PORT_ATTR_RO(state);
258 static PORT_ATTR_RO(lid);
259 static PORT_ATTR_RO(lid_mask_count);
260 static PORT_ATTR_RO(sm_lid);
261 static PORT_ATTR_RO(sm_sl);
262 static PORT_ATTR_RO(cap_mask);
263 static PORT_ATTR_RO(rate);
264 static PORT_ATTR_RO(phys_state);
265 static PORT_ATTR_RO(link_layer);
266
267 static struct attribute *port_default_attrs[] = {
268 &port_attr_state.attr,
269 &port_attr_lid.attr,
270 &port_attr_lid_mask_count.attr,
271 &port_attr_sm_lid.attr,
272 &port_attr_sm_sl.attr,
273 &port_attr_cap_mask.attr,
274 &port_attr_rate.attr,
275 &port_attr_phys_state.attr,
276 &port_attr_link_layer.attr,
277 NULL
278 };
279
280 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
281 char *buf)
282 {
283 struct port_table_attribute *tab_attr =
284 container_of(attr, struct port_table_attribute, attr);
285 union ib_gid gid;
286 ssize_t ret;
287
288 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
289 if (ret)
290 return ret;
291
292 return sprintf(buf, "%pI6\n", gid.raw);
293 }
294
295 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
296 char *buf)
297 {
298 struct port_table_attribute *tab_attr =
299 container_of(attr, struct port_table_attribute, attr);
300 u16 pkey;
301 ssize_t ret;
302
303 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
304 if (ret)
305 return ret;
306
307 return sprintf(buf, "0x%04x\n", pkey);
308 }
309
310 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
311 struct port_table_attribute port_pma_attr_##_name = { \
312 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
313 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \
314 }
315
316 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
317 char *buf)
318 {
319 struct port_table_attribute *tab_attr =
320 container_of(attr, struct port_table_attribute, attr);
321 int offset = tab_attr->index & 0xffff;
322 int width = (tab_attr->index >> 16) & 0xff;
323 struct ib_mad *in_mad = NULL;
324 struct ib_mad *out_mad = NULL;
325 ssize_t ret;
326
327 if (!p->ibdev->process_mad)
328 return sprintf(buf, "N/A (no PMA)\n");
329
330 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
331 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
332 if (!in_mad || !out_mad) {
333 ret = -ENOMEM;
334 goto out;
335 }
336
337 in_mad->mad_hdr.base_version = 1;
338 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
339 in_mad->mad_hdr.class_version = 1;
340 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
341 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */
342
343 in_mad->data[41] = p->port_num; /* PortSelect field */
344
345 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
346 p->port_num, NULL, NULL, in_mad, out_mad) &
347 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
348 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
349 ret = -EINVAL;
350 goto out;
351 }
352
353 switch (width) {
354 case 4:
355 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
356 (4 - (offset % 8))) & 0xf);
357 break;
358 case 8:
359 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
360 break;
361 case 16:
362 ret = sprintf(buf, "%u\n",
363 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
364 break;
365 case 32:
366 ret = sprintf(buf, "%u\n",
367 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
368 break;
369 default:
370 ret = 0;
371 }
372
373 out:
374 kfree(in_mad);
375 kfree(out_mad);
376
377 return ret;
378 }
379
380 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
381 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
382 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
383 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
384 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
385 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
386 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
387 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
388 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
389 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
390 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
391 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
392 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
393 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
394 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
395 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
396
397 static struct attribute *pma_attrs[] = {
398 &port_pma_attr_symbol_error.attr.attr,
399 &port_pma_attr_link_error_recovery.attr.attr,
400 &port_pma_attr_link_downed.attr.attr,
401 &port_pma_attr_port_rcv_errors.attr.attr,
402 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
403 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
404 &port_pma_attr_port_xmit_discards.attr.attr,
405 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
406 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
407 &port_pma_attr_local_link_integrity_errors.attr.attr,
408 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
409 &port_pma_attr_VL15_dropped.attr.attr,
410 &port_pma_attr_port_xmit_data.attr.attr,
411 &port_pma_attr_port_rcv_data.attr.attr,
412 &port_pma_attr_port_xmit_packets.attr.attr,
413 &port_pma_attr_port_rcv_packets.attr.attr,
414 NULL
415 };
416
417 static struct attribute_group pma_group = {
418 .name = "counters",
419 .attrs = pma_attrs
420 };
421
422 static void ib_port_release(struct kobject *kobj)
423 {
424 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
425 struct attribute *a;
426 int i;
427
428 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
429 kfree(a);
430
431 kfree(p->gid_group.attrs);
432
433 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
434 kfree(a);
435
436 kfree(p->pkey_group.attrs);
437
438 kfree(p);
439 }
440
441 static struct kobj_type port_type = {
442 .release = ib_port_release,
443 .sysfs_ops = &port_sysfs_ops,
444 .default_attrs = port_default_attrs
445 };
446
447 static void ib_device_release(struct device *device)
448 {
449 struct ib_device *dev = container_of(device, struct ib_device, dev);
450
451 kfree(dev);
452 }
453
454 static int ib_device_uevent(struct device *device,
455 struct kobj_uevent_env *env)
456 {
457 struct ib_device *dev = container_of(device, struct ib_device, dev);
458
459 if (add_uevent_var(env, "NAME=%s", dev->name))
460 return -ENOMEM;
461
462 /*
463 * It would be nice to pass the node GUID with the event...
464 */
465
466 return 0;
467 }
468
469 static struct attribute **
470 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
471 struct port_attribute *, char *buf),
472 int len)
473 {
474 struct attribute **tab_attr;
475 struct port_table_attribute *element;
476 int i;
477
478 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
479 if (!tab_attr)
480 return NULL;
481
482 for (i = 0; i < len; i++) {
483 element = kzalloc(sizeof(struct port_table_attribute),
484 GFP_KERNEL);
485 if (!element)
486 goto err;
487
488 if (snprintf(element->name, sizeof(element->name),
489 "%d", i) >= sizeof(element->name)) {
490 kfree(element);
491 goto err;
492 }
493
494 element->attr.attr.name = element->name;
495 element->attr.attr.mode = S_IRUGO;
496 element->attr.show = show;
497 element->index = i;
498 sysfs_attr_init(&element->attr.attr);
499
500 tab_attr[i] = &element->attr.attr;
501 }
502
503 return tab_attr;
504
505 err:
506 while (--i >= 0)
507 kfree(tab_attr[i]);
508 kfree(tab_attr);
509 return NULL;
510 }
511
512 static int add_port(struct ib_device *device, int port_num,
513 int (*port_callback)(struct ib_device *,
514 u8, struct kobject *))
515 {
516 struct ib_port *p;
517 struct ib_port_attr attr;
518 int i;
519 int ret;
520
521 ret = ib_query_port(device, port_num, &attr);
522 if (ret)
523 return ret;
524
525 p = kzalloc(sizeof *p, GFP_KERNEL);
526 if (!p)
527 return -ENOMEM;
528
529 p->ibdev = device;
530 p->port_num = port_num;
531
532 ret = kobject_init_and_add(&p->kobj, &port_type,
533 kobject_get(device->ports_parent),
534 "%d", port_num);
535 if (ret)
536 goto err_put;
537
538 ret = sysfs_create_group(&p->kobj, &pma_group);
539 if (ret)
540 goto err_put;
541
542 p->gid_group.name = "gids";
543 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
544 if (!p->gid_group.attrs)
545 goto err_remove_pma;
546
547 ret = sysfs_create_group(&p->kobj, &p->gid_group);
548 if (ret)
549 goto err_free_gid;
550
551 p->pkey_group.name = "pkeys";
552 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
553 attr.pkey_tbl_len);
554 if (!p->pkey_group.attrs)
555 goto err_remove_gid;
556
557 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
558 if (ret)
559 goto err_free_pkey;
560
561 if (port_callback) {
562 ret = port_callback(device, port_num, &p->kobj);
563 if (ret)
564 goto err_remove_pkey;
565 }
566
567 list_add_tail(&p->kobj.entry, &device->port_list);
568
569 kobject_uevent(&p->kobj, KOBJ_ADD);
570 return 0;
571
572 err_remove_pkey:
573 sysfs_remove_group(&p->kobj, &p->pkey_group);
574
575 err_free_pkey:
576 for (i = 0; i < attr.pkey_tbl_len; ++i)
577 kfree(p->pkey_group.attrs[i]);
578
579 kfree(p->pkey_group.attrs);
580
581 err_remove_gid:
582 sysfs_remove_group(&p->kobj, &p->gid_group);
583
584 err_free_gid:
585 for (i = 0; i < attr.gid_tbl_len; ++i)
586 kfree(p->gid_group.attrs[i]);
587
588 kfree(p->gid_group.attrs);
589
590 err_remove_pma:
591 sysfs_remove_group(&p->kobj, &pma_group);
592
593 err_put:
594 kobject_put(device->ports_parent);
595 kfree(p);
596 return ret;
597 }
598
599 static ssize_t show_node_type(struct device *device,
600 struct device_attribute *attr, char *buf)
601 {
602 struct ib_device *dev = container_of(device, struct ib_device, dev);
603
604 switch (dev->node_type) {
605 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
606 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
607 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
608 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
609 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
610 }
611 }
612
613 static ssize_t show_sys_image_guid(struct device *device,
614 struct device_attribute *dev_attr, char *buf)
615 {
616 struct ib_device *dev = container_of(device, struct ib_device, dev);
617 struct ib_device_attr attr;
618 ssize_t ret;
619
620 ret = ib_query_device(dev, &attr);
621 if (ret)
622 return ret;
623
624 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
625 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
626 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
627 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
628 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
629 }
630
631 static ssize_t show_node_guid(struct device *device,
632 struct device_attribute *attr, char *buf)
633 {
634 struct ib_device *dev = container_of(device, struct ib_device, dev);
635
636 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
637 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
638 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
639 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
640 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
641 }
642
643 static ssize_t show_node_desc(struct device *device,
644 struct device_attribute *attr, char *buf)
645 {
646 struct ib_device *dev = container_of(device, struct ib_device, dev);
647
648 return sprintf(buf, "%.64s\n", dev->node_desc);
649 }
650
651 static ssize_t set_node_desc(struct device *device,
652 struct device_attribute *attr,
653 const char *buf, size_t count)
654 {
655 struct ib_device *dev = container_of(device, struct ib_device, dev);
656 struct ib_device_modify desc = {};
657 int ret;
658
659 if (!dev->modify_device)
660 return -EIO;
661
662 memcpy(desc.node_desc, buf, min_t(int, count, 64));
663 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
664 if (ret)
665 return ret;
666
667 return count;
668 }
669
670 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
671 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
672 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
673 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
674
675 static struct device_attribute *ib_class_attributes[] = {
676 &dev_attr_node_type,
677 &dev_attr_sys_image_guid,
678 &dev_attr_node_guid,
679 &dev_attr_node_desc
680 };
681
682 static struct class ib_class = {
683 .name = "infiniband",
684 .dev_release = ib_device_release,
685 .dev_uevent = ib_device_uevent,
686 };
687
688 /* Show a given an attribute in the statistics group */
689 static ssize_t show_protocol_stat(const struct device *device,
690 struct device_attribute *attr, char *buf,
691 unsigned offset)
692 {
693 struct ib_device *dev = container_of(device, struct ib_device, dev);
694 union rdma_protocol_stats stats;
695 ssize_t ret;
696
697 ret = dev->get_protocol_stats(dev, &stats);
698 if (ret)
699 return ret;
700
701 return sprintf(buf, "%llu\n",
702 (unsigned long long) ((u64 *) &stats)[offset]);
703 }
704
705 /* generate a read-only iwarp statistics attribute */
706 #define IW_STATS_ENTRY(name) \
707 static ssize_t show_##name(struct device *device, \
708 struct device_attribute *attr, char *buf) \
709 { \
710 return show_protocol_stat(device, attr, buf, \
711 offsetof(struct iw_protocol_stats, name) / \
712 sizeof (u64)); \
713 } \
714 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
715
716 IW_STATS_ENTRY(ipInReceives);
717 IW_STATS_ENTRY(ipInHdrErrors);
718 IW_STATS_ENTRY(ipInTooBigErrors);
719 IW_STATS_ENTRY(ipInNoRoutes);
720 IW_STATS_ENTRY(ipInAddrErrors);
721 IW_STATS_ENTRY(ipInUnknownProtos);
722 IW_STATS_ENTRY(ipInTruncatedPkts);
723 IW_STATS_ENTRY(ipInDiscards);
724 IW_STATS_ENTRY(ipInDelivers);
725 IW_STATS_ENTRY(ipOutForwDatagrams);
726 IW_STATS_ENTRY(ipOutRequests);
727 IW_STATS_ENTRY(ipOutDiscards);
728 IW_STATS_ENTRY(ipOutNoRoutes);
729 IW_STATS_ENTRY(ipReasmTimeout);
730 IW_STATS_ENTRY(ipReasmReqds);
731 IW_STATS_ENTRY(ipReasmOKs);
732 IW_STATS_ENTRY(ipReasmFails);
733 IW_STATS_ENTRY(ipFragOKs);
734 IW_STATS_ENTRY(ipFragFails);
735 IW_STATS_ENTRY(ipFragCreates);
736 IW_STATS_ENTRY(ipInMcastPkts);
737 IW_STATS_ENTRY(ipOutMcastPkts);
738 IW_STATS_ENTRY(ipInBcastPkts);
739 IW_STATS_ENTRY(ipOutBcastPkts);
740 IW_STATS_ENTRY(tcpRtoAlgorithm);
741 IW_STATS_ENTRY(tcpRtoMin);
742 IW_STATS_ENTRY(tcpRtoMax);
743 IW_STATS_ENTRY(tcpMaxConn);
744 IW_STATS_ENTRY(tcpActiveOpens);
745 IW_STATS_ENTRY(tcpPassiveOpens);
746 IW_STATS_ENTRY(tcpAttemptFails);
747 IW_STATS_ENTRY(tcpEstabResets);
748 IW_STATS_ENTRY(tcpCurrEstab);
749 IW_STATS_ENTRY(tcpInSegs);
750 IW_STATS_ENTRY(tcpOutSegs);
751 IW_STATS_ENTRY(tcpRetransSegs);
752 IW_STATS_ENTRY(tcpInErrs);
753 IW_STATS_ENTRY(tcpOutRsts);
754
755 static struct attribute *iw_proto_stats_attrs[] = {
756 &dev_attr_ipInReceives.attr,
757 &dev_attr_ipInHdrErrors.attr,
758 &dev_attr_ipInTooBigErrors.attr,
759 &dev_attr_ipInNoRoutes.attr,
760 &dev_attr_ipInAddrErrors.attr,
761 &dev_attr_ipInUnknownProtos.attr,
762 &dev_attr_ipInTruncatedPkts.attr,
763 &dev_attr_ipInDiscards.attr,
764 &dev_attr_ipInDelivers.attr,
765 &dev_attr_ipOutForwDatagrams.attr,
766 &dev_attr_ipOutRequests.attr,
767 &dev_attr_ipOutDiscards.attr,
768 &dev_attr_ipOutNoRoutes.attr,
769 &dev_attr_ipReasmTimeout.attr,
770 &dev_attr_ipReasmReqds.attr,
771 &dev_attr_ipReasmOKs.attr,
772 &dev_attr_ipReasmFails.attr,
773 &dev_attr_ipFragOKs.attr,
774 &dev_attr_ipFragFails.attr,
775 &dev_attr_ipFragCreates.attr,
776 &dev_attr_ipInMcastPkts.attr,
777 &dev_attr_ipOutMcastPkts.attr,
778 &dev_attr_ipInBcastPkts.attr,
779 &dev_attr_ipOutBcastPkts.attr,
780 &dev_attr_tcpRtoAlgorithm.attr,
781 &dev_attr_tcpRtoMin.attr,
782 &dev_attr_tcpRtoMax.attr,
783 &dev_attr_tcpMaxConn.attr,
784 &dev_attr_tcpActiveOpens.attr,
785 &dev_attr_tcpPassiveOpens.attr,
786 &dev_attr_tcpAttemptFails.attr,
787 &dev_attr_tcpEstabResets.attr,
788 &dev_attr_tcpCurrEstab.attr,
789 &dev_attr_tcpInSegs.attr,
790 &dev_attr_tcpOutSegs.attr,
791 &dev_attr_tcpRetransSegs.attr,
792 &dev_attr_tcpInErrs.attr,
793 &dev_attr_tcpOutRsts.attr,
794 NULL
795 };
796
797 static struct attribute_group iw_stats_group = {
798 .name = "proto_stats",
799 .attrs = iw_proto_stats_attrs,
800 };
801
802 int ib_device_register_sysfs(struct ib_device *device,
803 int (*port_callback)(struct ib_device *,
804 u8, struct kobject *))
805 {
806 struct device *class_dev = &device->dev;
807 int ret;
808 int i;
809
810 class_dev->class = &ib_class;
811 class_dev->parent = device->dma_device;
812 dev_set_name(class_dev, device->name);
813 dev_set_drvdata(class_dev, device);
814
815 INIT_LIST_HEAD(&device->port_list);
816
817 ret = device_register(class_dev);
818 if (ret)
819 goto err;
820
821 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
822 ret = device_create_file(class_dev, ib_class_attributes[i]);
823 if (ret)
824 goto err_unregister;
825 }
826
827 device->ports_parent = kobject_create_and_add("ports",
828 kobject_get(&class_dev->kobj));
829 if (!device->ports_parent) {
830 ret = -ENOMEM;
831 goto err_put;
832 }
833
834 if (device->node_type == RDMA_NODE_IB_SWITCH) {
835 ret = add_port(device, 0, port_callback);
836 if (ret)
837 goto err_put;
838 } else {
839 for (i = 1; i <= device->phys_port_cnt; ++i) {
840 ret = add_port(device, i, port_callback);
841 if (ret)
842 goto err_put;
843 }
844 }
845
846 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {
847 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);
848 if (ret)
849 goto err_put;
850 }
851
852 return 0;
853
854 err_put:
855 {
856 struct kobject *p, *t;
857 struct ib_port *port;
858
859 list_for_each_entry_safe(p, t, &device->port_list, entry) {
860 list_del(&p->entry);
861 port = container_of(p, struct ib_port, kobj);
862 sysfs_remove_group(p, &pma_group);
863 sysfs_remove_group(p, &port->pkey_group);
864 sysfs_remove_group(p, &port->gid_group);
865 kobject_put(p);
866 }
867 }
868
869 kobject_put(&class_dev->kobj);
870
871 err_unregister:
872 device_unregister(class_dev);
873
874 err:
875 return ret;
876 }
877
878 void ib_device_unregister_sysfs(struct ib_device *device)
879 {
880 struct kobject *p, *t;
881 struct ib_port *port;
882
883 /* Hold kobject until ib_dealloc_device() */
884 kobject_get(&device->dev.kobj);
885
886 list_for_each_entry_safe(p, t, &device->port_list, entry) {
887 list_del(&p->entry);
888 port = container_of(p, struct ib_port, kobj);
889 sysfs_remove_group(p, &pma_group);
890 sysfs_remove_group(p, &port->pkey_group);
891 sysfs_remove_group(p, &port->gid_group);
892 kobject_put(p);
893 }
894
895 kobject_put(device->ports_parent);
896 device_unregister(&device->dev);
897 }
898
899 int ib_sysfs_setup(void)
900 {
901 return class_register(&ib_class);
902 }
903
904 void ib_sysfs_cleanup(void)
905 {
906 class_unregister(&ib_class);
907 }