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
42 struct 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
50 struct 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) \
58 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
59
60 #define PORT_ATTR_RO(_name) \
61 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
62
63 struct port_table_attribute {
64 struct port_attribute attr;
65 char name[8];
66 int index;
67 };
68
port_attr_show(struct kobject * kobj,struct attribute * attr,char * buf)69 static 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
82 static const struct sysfs_ops port_sysfs_ops = {
83 .show = port_attr_show
84 };
85
state_show(struct ib_port * p,struct port_attribute * unused,char * buf)86 static 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
lid_show(struct ib_port * p,struct port_attribute * unused,char * buf)110 static 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
lid_mask_count_show(struct ib_port * p,struct port_attribute * unused,char * buf)123 static 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
sm_lid_show(struct ib_port * p,struct port_attribute * unused,char * buf)137 static 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
sm_sl_show(struct ib_port * p,struct port_attribute * unused,char * buf)150 static 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
cap_mask_show(struct ib_port * p,struct port_attribute * unused,char * buf)163 static 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
rate_show(struct ib_port * p,struct port_attribute * unused,char * buf)176 static 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
phys_state_show(struct ib_port * p,struct port_attribute * unused,char * buf)202 static 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
link_layer_show(struct ib_port * p,struct port_attribute * unused,char * buf)225 static 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
238 static PORT_ATTR_RO(state);
239 static PORT_ATTR_RO(lid);
240 static PORT_ATTR_RO(lid_mask_count);
241 static PORT_ATTR_RO(sm_lid);
242 static PORT_ATTR_RO(sm_sl);
243 static PORT_ATTR_RO(cap_mask);
244 static PORT_ATTR_RO(rate);
245 static PORT_ATTR_RO(phys_state);
246 static PORT_ATTR_RO(link_layer);
247
248 static 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
show_port_gid(struct ib_port * p,struct port_attribute * attr,char * buf)261 static 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
show_port_pkey(struct ib_port * p,struct port_attribute * attr,char * buf)276 static 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) \
292 struct 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
show_pma_counter(struct ib_port * p,struct port_attribute * attr,char * buf)297 static 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
354 out:
355 kfree(in_mad);
356 kfree(out_mad);
357
358 return ret;
359 }
360
361 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
362 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
363 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
364 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
365 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
366 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
367 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
368 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
369 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
370 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
371 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
372 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
373 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
374 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
375 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
376 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
377
378 static 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
398 static struct attribute_group pma_group = {
399 .name = "counters",
400 .attrs = pma_attrs
401 };
402
ib_port_release(struct kobject * kobj)403 static 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
422 static struct kobj_type port_type = {
423 .release = ib_port_release,
424 .sysfs_ops = &port_sysfs_ops,
425 .default_attrs = port_default_attrs
426 };
427
ib_device_release(struct device * device)428 static 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
ib_device_uevent(struct device * device,struct kobj_uevent_env * env)435 static 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
450 static struct attribute **
alloc_group_attrs(ssize_t (* show)(struct ib_port *,struct port_attribute *,char * buf),int len)451 alloc_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
486 err:
487 while (--i >= 0)
488 kfree(tab_attr[i]);
489 kfree(tab_attr);
490 return NULL;
491 }
492
add_port(struct ib_device * device,int port_num,int (* port_callback)(struct ib_device *,u8,struct kobject *))493 static 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
553 err_remove_pkey:
554 sysfs_remove_group(&p->kobj, &p->pkey_group);
555
556 err_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
562 err_remove_gid:
563 sysfs_remove_group(&p->kobj, &p->gid_group);
564
565 err_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
571 err_remove_pma:
572 sysfs_remove_group(&p->kobj, &pma_group);
573
574 err_put:
575 kobject_put(device->ports_parent);
576 kfree(p);
577 return ret;
578 }
579
show_node_type(struct device * device,struct device_attribute * attr,char * buf)580 static 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
show_sys_image_guid(struct device * device,struct device_attribute * dev_attr,char * buf)594 static 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
show_node_guid(struct device * device,struct device_attribute * attr,char * buf)612 static 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
show_node_desc(struct device * device,struct device_attribute * attr,char * buf)624 static 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
set_node_desc(struct device * device,struct device_attribute * attr,const char * buf,size_t count)632 static 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
651 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
652 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
653 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
654 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
655
656 static 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
663 static 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 */
show_protocol_stat(const struct device * device,struct device_attribute * attr,char * buf,unsigned offset)670 static 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) \
688 static 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 } \
695 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
696
697 IW_STATS_ENTRY(ipInReceives);
698 IW_STATS_ENTRY(ipInHdrErrors);
699 IW_STATS_ENTRY(ipInTooBigErrors);
700 IW_STATS_ENTRY(ipInNoRoutes);
701 IW_STATS_ENTRY(ipInAddrErrors);
702 IW_STATS_ENTRY(ipInUnknownProtos);
703 IW_STATS_ENTRY(ipInTruncatedPkts);
704 IW_STATS_ENTRY(ipInDiscards);
705 IW_STATS_ENTRY(ipInDelivers);
706 IW_STATS_ENTRY(ipOutForwDatagrams);
707 IW_STATS_ENTRY(ipOutRequests);
708 IW_STATS_ENTRY(ipOutDiscards);
709 IW_STATS_ENTRY(ipOutNoRoutes);
710 IW_STATS_ENTRY(ipReasmTimeout);
711 IW_STATS_ENTRY(ipReasmReqds);
712 IW_STATS_ENTRY(ipReasmOKs);
713 IW_STATS_ENTRY(ipReasmFails);
714 IW_STATS_ENTRY(ipFragOKs);
715 IW_STATS_ENTRY(ipFragFails);
716 IW_STATS_ENTRY(ipFragCreates);
717 IW_STATS_ENTRY(ipInMcastPkts);
718 IW_STATS_ENTRY(ipOutMcastPkts);
719 IW_STATS_ENTRY(ipInBcastPkts);
720 IW_STATS_ENTRY(ipOutBcastPkts);
721 IW_STATS_ENTRY(tcpRtoAlgorithm);
722 IW_STATS_ENTRY(tcpRtoMin);
723 IW_STATS_ENTRY(tcpRtoMax);
724 IW_STATS_ENTRY(tcpMaxConn);
725 IW_STATS_ENTRY(tcpActiveOpens);
726 IW_STATS_ENTRY(tcpPassiveOpens);
727 IW_STATS_ENTRY(tcpAttemptFails);
728 IW_STATS_ENTRY(tcpEstabResets);
729 IW_STATS_ENTRY(tcpCurrEstab);
730 IW_STATS_ENTRY(tcpInSegs);
731 IW_STATS_ENTRY(tcpOutSegs);
732 IW_STATS_ENTRY(tcpRetransSegs);
733 IW_STATS_ENTRY(tcpInErrs);
734 IW_STATS_ENTRY(tcpOutRsts);
735
736 static 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
778 static struct attribute_group iw_stats_group = {
779 .name = "proto_stats",
780 .attrs = iw_proto_stats_attrs,
781 };
782
ib_device_register_sysfs(struct ib_device * device,int (* port_callback)(struct ib_device *,u8,struct kobject *))783 int 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
835 err_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
852 err_unregister:
853 device_unregister(class_dev);
854
855 err:
856 return ret;
857 }
858
ib_device_unregister_sysfs(struct ib_device * device)859 void 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
ib_sysfs_setup(void)880 int ib_sysfs_setup(void)
881 {
882 return class_register(&ib_class);
883 }
884
ib_sysfs_cleanup(void)885 void ib_sysfs_cleanup(void)
886 {
887 class_unregister(&ib_class);
888 }
889