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Merge branch 'akpm'
[linux-2.6/next.git] / drivers / infiniband / core / sysfs.c
blobab7fc60aeb5d6cab906d72997533ada1e52586d8
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 switch (attr.active_speed) {
190 case 2: speed = " DDR"; break;
191 case 4: speed = " QDR"; break;
192 }
193
194 rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed;
195 if (rate < 0)
196 return -EINVAL;
197
198 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
199 rate / 10, rate % 10 ? ".5" : "",
200 ib_width_enum_to_int(attr.active_width), speed);
201 }
202
203 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
204 char *buf)
205 {
206 struct ib_port_attr attr;
207
208 ssize_t ret;
209
210 ret = ib_query_port(p->ibdev, p->port_num, &attr);
211 if (ret)
212 return ret;
213
214 switch (attr.phys_state) {
215 case 1: return sprintf(buf, "1: Sleep\n");
216 case 2: return sprintf(buf, "2: Polling\n");
217 case 3: return sprintf(buf, "3: Disabled\n");
218 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
219 case 5: return sprintf(buf, "5: LinkUp\n");
220 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
221 case 7: return sprintf(buf, "7: Phy Test\n");
222 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
223 }
224 }
225
226 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
227 char *buf)
228 {
229 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
230 case IB_LINK_LAYER_INFINIBAND:
231 return sprintf(buf, "%s\n", "InfiniBand");
232 case IB_LINK_LAYER_ETHERNET:
233 return sprintf(buf, "%s\n", "Ethernet");
234 default:
235 return sprintf(buf, "%s\n", "Unknown");
236 }
237 }
238
239 static PORT_ATTR_RO(state);
240 static PORT_ATTR_RO(lid);
241 static PORT_ATTR_RO(lid_mask_count);
242 static PORT_ATTR_RO(sm_lid);
243 static PORT_ATTR_RO(sm_sl);
244 static PORT_ATTR_RO(cap_mask);
245 static PORT_ATTR_RO(rate);
246 static PORT_ATTR_RO(phys_state);
247 static PORT_ATTR_RO(link_layer);
248
249 static struct attribute *port_default_attrs[] = {
250 &port_attr_state.attr,
251 &port_attr_lid.attr,
252 &port_attr_lid_mask_count.attr,
253 &port_attr_sm_lid.attr,
254 &port_attr_sm_sl.attr,
255 &port_attr_cap_mask.attr,
256 &port_attr_rate.attr,
257 &port_attr_phys_state.attr,
258 &port_attr_link_layer.attr,
259 NULL
260 };
261
262 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
263 char *buf)
264 {
265 struct port_table_attribute *tab_attr =
266 container_of(attr, struct port_table_attribute, attr);
267 union ib_gid gid;
268 ssize_t ret;
269
270 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
271 if (ret)
272 return ret;
273
274 return sprintf(buf, "%pI6\n", gid.raw);
275 }
276
277 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
278 char *buf)
279 {
280 struct port_table_attribute *tab_attr =
281 container_of(attr, struct port_table_attribute, attr);
282 u16 pkey;
283 ssize_t ret;
284
285 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
286 if (ret)
287 return ret;
288
289 return sprintf(buf, "0x%04x\n", pkey);
290 }
291
292 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
293 struct port_table_attribute port_pma_attr_##_name = { \
294 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
295 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \
296 }
297
298 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
299 char *buf)
300 {
301 struct port_table_attribute *tab_attr =
302 container_of(attr, struct port_table_attribute, attr);
303 int offset = tab_attr->index & 0xffff;
304 int width = (tab_attr->index >> 16) & 0xff;
305 struct ib_mad *in_mad = NULL;
306 struct ib_mad *out_mad = NULL;
307 ssize_t ret;
308
309 if (!p->ibdev->process_mad)
310 return sprintf(buf, "N/A (no PMA)\n");
311
312 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
313 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
314 if (!in_mad || !out_mad) {
315 ret = -ENOMEM;
316 goto out;
317 }
318
319 in_mad->mad_hdr.base_version = 1;
320 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
321 in_mad->mad_hdr.class_version = 1;
322 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
323 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */
324
325 in_mad->data[41] = p->port_num; /* PortSelect field */
326
327 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
328 p->port_num, NULL, NULL, in_mad, out_mad) &
329 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
330 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
331 ret = -EINVAL;
332 goto out;
333 }
334
335 switch (width) {
336 case 4:
337 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
338 (4 - (offset % 8))) & 0xf);
339 break;
340 case 8:
341 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
342 break;
343 case 16:
344 ret = sprintf(buf, "%u\n",
345 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
346 break;
347 case 32:
348 ret = sprintf(buf, "%u\n",
349 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
350 break;
351 default:
352 ret = 0;
353 }
354
355 out:
356 kfree(in_mad);
357 kfree(out_mad);
358
359 return ret;
360 }
361
362 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
363 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
364 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
365 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
366 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
367 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
368 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
369 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
370 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
371 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
372 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
373 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
374 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
375 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
376 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
377 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
378
379 static struct attribute *pma_attrs[] = {
380 &port_pma_attr_symbol_error.attr.attr,
381 &port_pma_attr_link_error_recovery.attr.attr,
382 &port_pma_attr_link_downed.attr.attr,
383 &port_pma_attr_port_rcv_errors.attr.attr,
384 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
385 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
386 &port_pma_attr_port_xmit_discards.attr.attr,
387 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
388 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
389 &port_pma_attr_local_link_integrity_errors.attr.attr,
390 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
391 &port_pma_attr_VL15_dropped.attr.attr,
392 &port_pma_attr_port_xmit_data.attr.attr,
393 &port_pma_attr_port_rcv_data.attr.attr,
394 &port_pma_attr_port_xmit_packets.attr.attr,
395 &port_pma_attr_port_rcv_packets.attr.attr,
396 NULL
397 };
398
399 static struct attribute_group pma_group = {
400 .name = "counters",
401 .attrs = pma_attrs
402 };
403
404 static void ib_port_release(struct kobject *kobj)
405 {
406 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
407 struct attribute *a;
408 int i;
409
410 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
411 kfree(a);
412
413 kfree(p->gid_group.attrs);
414
415 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
416 kfree(a);
417
418 kfree(p->pkey_group.attrs);
419
420 kfree(p);
421 }
422
423 static struct kobj_type port_type = {
424 .release = ib_port_release,
425 .sysfs_ops = &port_sysfs_ops,
426 .default_attrs = port_default_attrs
427 };
428
429 static void ib_device_release(struct device *device)
430 {
431 struct ib_device *dev = container_of(device, struct ib_device, dev);
432
433 kfree(dev);
434 }
435
436 static int ib_device_uevent(struct device *device,
437 struct kobj_uevent_env *env)
438 {
439 struct ib_device *dev = container_of(device, struct ib_device, dev);
440
441 if (add_uevent_var(env, "NAME=%s", dev->name))
442 return -ENOMEM;
443
444 /*
445 * It would be nice to pass the node GUID with the event...
446 */
447
448 return 0;
449 }
450
451 static struct attribute **
452 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
453 struct port_attribute *, char *buf),
454 int len)
455 {
456 struct attribute **tab_attr;
457 struct port_table_attribute *element;
458 int i;
459
460 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
461 if (!tab_attr)
462 return NULL;
463
464 for (i = 0; i < len; i++) {
465 element = kzalloc(sizeof(struct port_table_attribute),
466 GFP_KERNEL);
467 if (!element)
468 goto err;
469
470 if (snprintf(element->name, sizeof(element->name),
471 "%d", i) >= sizeof(element->name)) {
472 kfree(element);
473 goto err;
474 }
475
476 element->attr.attr.name = element->name;
477 element->attr.attr.mode = S_IRUGO;
478 element->attr.show = show;
479 element->index = i;
480 sysfs_attr_init(&element->attr.attr);
481
482 tab_attr[i] = &element->attr.attr;
483 }
484
485 return tab_attr;
486
487 err:
488 while (--i >= 0)
489 kfree(tab_attr[i]);
490 kfree(tab_attr);
491 return NULL;
492 }
493
494 static int add_port(struct ib_device *device, int port_num,
495 int (*port_callback)(struct ib_device *,
496 u8, struct kobject *))
497 {
498 struct ib_port *p;
499 struct ib_port_attr attr;
500 int i;
501 int ret;
502
503 ret = ib_query_port(device, port_num, &attr);
504 if (ret)
505 return ret;
506
507 p = kzalloc(sizeof *p, GFP_KERNEL);
508 if (!p)
509 return -ENOMEM;
510
511 p->ibdev = device;
512 p->port_num = port_num;
513
514 ret = kobject_init_and_add(&p->kobj, &port_type,
515 kobject_get(device->ports_parent),
516 "%d", port_num);
517 if (ret)
518 goto err_put;
519
520 ret = sysfs_create_group(&p->kobj, &pma_group);
521 if (ret)
522 goto err_put;
523
524 p->gid_group.name = "gids";
525 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
526 if (!p->gid_group.attrs)
527 goto err_remove_pma;
528
529 ret = sysfs_create_group(&p->kobj, &p->gid_group);
530 if (ret)
531 goto err_free_gid;
532
533 p->pkey_group.name = "pkeys";
534 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
535 attr.pkey_tbl_len);
536 if (!p->pkey_group.attrs)
537 goto err_remove_gid;
538
539 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
540 if (ret)
541 goto err_free_pkey;
542
543 if (port_callback) {
544 ret = port_callback(device, port_num, &p->kobj);
545 if (ret)
546 goto err_remove_pkey;
547 }
548
549 list_add_tail(&p->kobj.entry, &device->port_list);
550
551 kobject_uevent(&p->kobj, KOBJ_ADD);
552 return 0;
553
554 err_remove_pkey:
555 sysfs_remove_group(&p->kobj, &p->pkey_group);
556
557 err_free_pkey:
558 for (i = 0; i < attr.pkey_tbl_len; ++i)
559 kfree(p->pkey_group.attrs[i]);
560
561 kfree(p->pkey_group.attrs);
562
563 err_remove_gid:
564 sysfs_remove_group(&p->kobj, &p->gid_group);
565
566 err_free_gid:
567 for (i = 0; i < attr.gid_tbl_len; ++i)
568 kfree(p->gid_group.attrs[i]);
569
570 kfree(p->gid_group.attrs);
571
572 err_remove_pma:
573 sysfs_remove_group(&p->kobj, &pma_group);
574
575 err_put:
576 kobject_put(device->ports_parent);
577 kfree(p);
578 return ret;
579 }
580
581 static ssize_t show_node_type(struct device *device,
582 struct device_attribute *attr, char *buf)
583 {
584 struct ib_device *dev = container_of(device, struct ib_device, dev);
585
586 switch (dev->node_type) {
587 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
588 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
589 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
590 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
591 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
592 }
593 }
594
595 static ssize_t show_sys_image_guid(struct device *device,
596 struct device_attribute *dev_attr, char *buf)
597 {
598 struct ib_device *dev = container_of(device, struct ib_device, dev);
599 struct ib_device_attr attr;
600 ssize_t ret;
601
602 ret = ib_query_device(dev, &attr);
603 if (ret)
604 return ret;
605
606 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
607 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
608 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
609 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
610 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
611 }
612
613 static ssize_t show_node_guid(struct device *device,
614 struct device_attribute *attr, char *buf)
615 {
616 struct ib_device *dev = container_of(device, struct ib_device, dev);
617
618 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
619 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
620 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
621 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
622 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
623 }
624
625 static ssize_t show_node_desc(struct device *device,
626 struct device_attribute *attr, char *buf)
627 {
628 struct ib_device *dev = container_of(device, struct ib_device, dev);
629
630 return sprintf(buf, "%.64s\n", dev->node_desc);
631 }
632
633 static ssize_t set_node_desc(struct device *device,
634 struct device_attribute *attr,
635 const char *buf, size_t count)
636 {
637 struct ib_device *dev = container_of(device, struct ib_device, dev);
638 struct ib_device_modify desc = {};
639 int ret;
640
641 if (!dev->modify_device)
642 return -EIO;
643
644 memcpy(desc.node_desc, buf, min_t(int, count, 64));
645 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
646 if (ret)
647 return ret;
648
649 return count;
650 }
651
652 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
653 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
654 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
655 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
656
657 static struct device_attribute *ib_class_attributes[] = {
658 &dev_attr_node_type,
659 &dev_attr_sys_image_guid,
660 &dev_attr_node_guid,
661 &dev_attr_node_desc
662 };
663
664 static struct class ib_class = {
665 .name = "infiniband",
666 .dev_release = ib_device_release,
667 .dev_uevent = ib_device_uevent,
668 };
669
670 /* Show a given an attribute in the statistics group */
671 static ssize_t show_protocol_stat(const struct device *device,
672 struct device_attribute *attr, char *buf,
673 unsigned offset)
674 {
675 struct ib_device *dev = container_of(device, struct ib_device, dev);
676 union rdma_protocol_stats stats;
677 ssize_t ret;
678
679 ret = dev->get_protocol_stats(dev, &stats);
680 if (ret)
681 return ret;
682
683 return sprintf(buf, "%llu\n",
684 (unsigned long long) ((u64 *) &stats)[offset]);
685 }
686
687 /* generate a read-only iwarp statistics attribute */
688 #define IW_STATS_ENTRY(name) \
689 static ssize_t show_##name(struct device *device, \
690 struct device_attribute *attr, char *buf) \
691 { \
692 return show_protocol_stat(device, attr, buf, \
693 offsetof(struct iw_protocol_stats, name) / \
694 sizeof (u64)); \
695 } \
696 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
697
698 IW_STATS_ENTRY(ipInReceives);
699 IW_STATS_ENTRY(ipInHdrErrors);
700 IW_STATS_ENTRY(ipInTooBigErrors);
701 IW_STATS_ENTRY(ipInNoRoutes);
702 IW_STATS_ENTRY(ipInAddrErrors);
703 IW_STATS_ENTRY(ipInUnknownProtos);
704 IW_STATS_ENTRY(ipInTruncatedPkts);
705 IW_STATS_ENTRY(ipInDiscards);
706 IW_STATS_ENTRY(ipInDelivers);
707 IW_STATS_ENTRY(ipOutForwDatagrams);
708 IW_STATS_ENTRY(ipOutRequests);
709 IW_STATS_ENTRY(ipOutDiscards);
710 IW_STATS_ENTRY(ipOutNoRoutes);
711 IW_STATS_ENTRY(ipReasmTimeout);
712 IW_STATS_ENTRY(ipReasmReqds);
713 IW_STATS_ENTRY(ipReasmOKs);
714 IW_STATS_ENTRY(ipReasmFails);
715 IW_STATS_ENTRY(ipFragOKs);
716 IW_STATS_ENTRY(ipFragFails);
717 IW_STATS_ENTRY(ipFragCreates);
718 IW_STATS_ENTRY(ipInMcastPkts);
719 IW_STATS_ENTRY(ipOutMcastPkts);
720 IW_STATS_ENTRY(ipInBcastPkts);
721 IW_STATS_ENTRY(ipOutBcastPkts);
722 IW_STATS_ENTRY(tcpRtoAlgorithm);
723 IW_STATS_ENTRY(tcpRtoMin);
724 IW_STATS_ENTRY(tcpRtoMax);
725 IW_STATS_ENTRY(tcpMaxConn);
726 IW_STATS_ENTRY(tcpActiveOpens);
727 IW_STATS_ENTRY(tcpPassiveOpens);
728 IW_STATS_ENTRY(tcpAttemptFails);
729 IW_STATS_ENTRY(tcpEstabResets);
730 IW_STATS_ENTRY(tcpCurrEstab);
731 IW_STATS_ENTRY(tcpInSegs);
732 IW_STATS_ENTRY(tcpOutSegs);
733 IW_STATS_ENTRY(tcpRetransSegs);
734 IW_STATS_ENTRY(tcpInErrs);
735 IW_STATS_ENTRY(tcpOutRsts);
736
737 static struct attribute *iw_proto_stats_attrs[] = {
738 &dev_attr_ipInReceives.attr,
739 &dev_attr_ipInHdrErrors.attr,
740 &dev_attr_ipInTooBigErrors.attr,
741 &dev_attr_ipInNoRoutes.attr,
742 &dev_attr_ipInAddrErrors.attr,
743 &dev_attr_ipInUnknownProtos.attr,
744 &dev_attr_ipInTruncatedPkts.attr,
745 &dev_attr_ipInDiscards.attr,
746 &dev_attr_ipInDelivers.attr,
747 &dev_attr_ipOutForwDatagrams.attr,
748 &dev_attr_ipOutRequests.attr,
749 &dev_attr_ipOutDiscards.attr,
750 &dev_attr_ipOutNoRoutes.attr,
751 &dev_attr_ipReasmTimeout.attr,
752 &dev_attr_ipReasmReqds.attr,
753 &dev_attr_ipReasmOKs.attr,
754 &dev_attr_ipReasmFails.attr,
755 &dev_attr_ipFragOKs.attr,
756 &dev_attr_ipFragFails.attr,
757 &dev_attr_ipFragCreates.attr,
758 &dev_attr_ipInMcastPkts.attr,
759 &dev_attr_ipOutMcastPkts.attr,
760 &dev_attr_ipInBcastPkts.attr,
761 &dev_attr_ipOutBcastPkts.attr,
762 &dev_attr_tcpRtoAlgorithm.attr,
763 &dev_attr_tcpRtoMin.attr,
764 &dev_attr_tcpRtoMax.attr,
765 &dev_attr_tcpMaxConn.attr,
766 &dev_attr_tcpActiveOpens.attr,
767 &dev_attr_tcpPassiveOpens.attr,
768 &dev_attr_tcpAttemptFails.attr,
769 &dev_attr_tcpEstabResets.attr,
770 &dev_attr_tcpCurrEstab.attr,
771 &dev_attr_tcpInSegs.attr,
772 &dev_attr_tcpOutSegs.attr,
773 &dev_attr_tcpRetransSegs.attr,
774 &dev_attr_tcpInErrs.attr,
775 &dev_attr_tcpOutRsts.attr,
776 NULL
777 };
778
779 static struct attribute_group iw_stats_group = {
780 .name = "proto_stats",
781 .attrs = iw_proto_stats_attrs,
782 };
783
784 int ib_device_register_sysfs(struct ib_device *device,
785 int (*port_callback)(struct ib_device *,
786 u8, struct kobject *))
787 {
788 struct device *class_dev = &device->dev;
789 int ret;
790 int i;
791
792 class_dev->class = &ib_class;
793 class_dev->parent = device->dma_device;
794 dev_set_name(class_dev, device->name);
795 dev_set_drvdata(class_dev, device);
796
797 INIT_LIST_HEAD(&device->port_list);
798
799 ret = device_register(class_dev);
800 if (ret)
801 goto err;
802
803 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
804 ret = device_create_file(class_dev, ib_class_attributes[i]);
805 if (ret)
806 goto err_unregister;
807 }
808
809 device->ports_parent = kobject_create_and_add("ports",
810 kobject_get(&class_dev->kobj));
811 if (!device->ports_parent) {
812 ret = -ENOMEM;
813 goto err_put;
814 }
815
816 if (device->node_type == RDMA_NODE_IB_SWITCH) {
817 ret = add_port(device, 0, port_callback);
818 if (ret)
819 goto err_put;
820 } else {
821 for (i = 1; i <= device->phys_port_cnt; ++i) {
822 ret = add_port(device, i, port_callback);
823 if (ret)
824 goto err_put;
825 }
826 }
827
828 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {
829 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);
830 if (ret)
831 goto err_put;
832 }
833
834 return 0;
835
836 err_put:
837 {
838 struct kobject *p, *t;
839 struct ib_port *port;
840
841 list_for_each_entry_safe(p, t, &device->port_list, entry) {
842 list_del(&p->entry);
843 port = container_of(p, struct ib_port, kobj);
844 sysfs_remove_group(p, &pma_group);
845 sysfs_remove_group(p, &port->pkey_group);
846 sysfs_remove_group(p, &port->gid_group);
847 kobject_put(p);
848 }
849 }
850
851 kobject_put(&class_dev->kobj);
852
853 err_unregister:
854 device_unregister(class_dev);
855
856 err:
857 return ret;
858 }
859
860 void ib_device_unregister_sysfs(struct ib_device *device)
861 {
862 struct kobject *p, *t;
863 struct ib_port *port;
864
865 /* Hold kobject until ib_dealloc_device() */
866 kobject_get(&device->dev.kobj);
867
868 list_for_each_entry_safe(p, t, &device->port_list, entry) {
869 list_del(&p->entry);
870 port = container_of(p, struct ib_port, kobj);
871 sysfs_remove_group(p, &pma_group);
872 sysfs_remove_group(p, &port->pkey_group);
873 sysfs_remove_group(p, &port->gid_group);
874 kobject_put(p);
875 }
876
877 kobject_put(device->ports_parent);
878 device_unregister(&device->dev);
879 }
880
881 int ib_sysfs_setup(void)
882 {
883 return class_register(&ib_class);
884 }
885
886 void ib_sysfs_cleanup(void)
887 {
888 class_unregister(&ib_class);
889 }
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