Loading...
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#include "core_priv.h"
36
37#include <linux/slab.h>
38#include <linux/string.h>
39
40#include <rdma/ib_mad.h>
41
42struct ib_port {
43 struct kobject kobj;
44 struct ib_device *ibdev;
45 struct attribute_group gid_group;
46 struct attribute_group pkey_group;
47 u8 port_num;
48};
49
50struct port_attribute {
51 struct attribute attr;
52 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
53 ssize_t (*store)(struct ib_port *, struct port_attribute *,
54 const char *buf, size_t count);
55};
56
57#define PORT_ATTR(_name, _mode, _show, _store) \
58struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
59
60#define PORT_ATTR_RO(_name) \
61struct port_attribute port_attr_##_name = __ATTR_RO(_name)
62
63struct port_table_attribute {
64 struct port_attribute attr;
65 char name[8];
66 int index;
67};
68
69static ssize_t port_attr_show(struct kobject *kobj,
70 struct attribute *attr, char *buf)
71{
72 struct port_attribute *port_attr =
73 container_of(attr, struct port_attribute, attr);
74 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
75
76 if (!port_attr->show)
77 return -EIO;
78
79 return port_attr->show(p, port_attr, buf);
80}
81
82static const struct sysfs_ops port_sysfs_ops = {
83 .show = port_attr_show
84};
85
86static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
87 char *buf)
88{
89 struct ib_port_attr attr;
90 ssize_t ret;
91
92 static const char *state_name[] = {
93 [IB_PORT_NOP] = "NOP",
94 [IB_PORT_DOWN] = "DOWN",
95 [IB_PORT_INIT] = "INIT",
96 [IB_PORT_ARMED] = "ARMED",
97 [IB_PORT_ACTIVE] = "ACTIVE",
98 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
99 };
100
101 ret = ib_query_port(p->ibdev, p->port_num, &attr);
102 if (ret)
103 return ret;
104
105 return sprintf(buf, "%d: %s\n", attr.state,
106 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
107 state_name[attr.state] : "UNKNOWN");
108}
109
110static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
111 char *buf)
112{
113 struct ib_port_attr attr;
114 ssize_t ret;
115
116 ret = ib_query_port(p->ibdev, p->port_num, &attr);
117 if (ret)
118 return ret;
119
120 return sprintf(buf, "0x%x\n", attr.lid);
121}
122
123static ssize_t lid_mask_count_show(struct ib_port *p,
124 struct port_attribute *unused,
125 char *buf)
126{
127 struct ib_port_attr attr;
128 ssize_t ret;
129
130 ret = ib_query_port(p->ibdev, p->port_num, &attr);
131 if (ret)
132 return ret;
133
134 return sprintf(buf, "%d\n", attr.lmc);
135}
136
137static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
138 char *buf)
139{
140 struct ib_port_attr attr;
141 ssize_t ret;
142
143 ret = ib_query_port(p->ibdev, p->port_num, &attr);
144 if (ret)
145 return ret;
146
147 return sprintf(buf, "0x%x\n", attr.sm_lid);
148}
149
150static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
151 char *buf)
152{
153 struct ib_port_attr attr;
154 ssize_t ret;
155
156 ret = ib_query_port(p->ibdev, p->port_num, &attr);
157 if (ret)
158 return ret;
159
160 return sprintf(buf, "%d\n", attr.sm_sl);
161}
162
163static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
164 char *buf)
165{
166 struct ib_port_attr attr;
167 ssize_t ret;
168
169 ret = ib_query_port(p->ibdev, p->port_num, &attr);
170 if (ret)
171 return ret;
172
173 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
174}
175
176static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
177 char *buf)
178{
179 struct ib_port_attr attr;
180 char *speed = "";
181 int rate;
182 ssize_t ret;
183
184 ret = ib_query_port(p->ibdev, p->port_num, &attr);
185 if (ret)
186 return ret;
187
188 switch (attr.active_speed) {
189 case 2: speed = " DDR"; break;
190 case 4: speed = " QDR"; break;
191 }
192
193 rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed;
194 if (rate < 0)
195 return -EINVAL;
196
197 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
198 rate / 10, rate % 10 ? ".5" : "",
199 ib_width_enum_to_int(attr.active_width), speed);
200}
201
202static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
203 char *buf)
204{
205 struct ib_port_attr attr;
206
207 ssize_t ret;
208
209 ret = ib_query_port(p->ibdev, p->port_num, &attr);
210 if (ret)
211 return ret;
212
213 switch (attr.phys_state) {
214 case 1: return sprintf(buf, "1: Sleep\n");
215 case 2: return sprintf(buf, "2: Polling\n");
216 case 3: return sprintf(buf, "3: Disabled\n");
217 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
218 case 5: return sprintf(buf, "5: LinkUp\n");
219 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
220 case 7: return sprintf(buf, "7: Phy Test\n");
221 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
222 }
223}
224
225static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
226 char *buf)
227{
228 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
229 case IB_LINK_LAYER_INFINIBAND:
230 return sprintf(buf, "%s\n", "InfiniBand");
231 case IB_LINK_LAYER_ETHERNET:
232 return sprintf(buf, "%s\n", "Ethernet");
233 default:
234 return sprintf(buf, "%s\n", "Unknown");
235 }
236}
237
238static PORT_ATTR_RO(state);
239static PORT_ATTR_RO(lid);
240static PORT_ATTR_RO(lid_mask_count);
241static PORT_ATTR_RO(sm_lid);
242static PORT_ATTR_RO(sm_sl);
243static PORT_ATTR_RO(cap_mask);
244static PORT_ATTR_RO(rate);
245static PORT_ATTR_RO(phys_state);
246static PORT_ATTR_RO(link_layer);
247
248static struct attribute *port_default_attrs[] = {
249 &port_attr_state.attr,
250 &port_attr_lid.attr,
251 &port_attr_lid_mask_count.attr,
252 &port_attr_sm_lid.attr,
253 &port_attr_sm_sl.attr,
254 &port_attr_cap_mask.attr,
255 &port_attr_rate.attr,
256 &port_attr_phys_state.attr,
257 &port_attr_link_layer.attr,
258 NULL
259};
260
261static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
262 char *buf)
263{
264 struct port_table_attribute *tab_attr =
265 container_of(attr, struct port_table_attribute, attr);
266 union ib_gid gid;
267 ssize_t ret;
268
269 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
270 if (ret)
271 return ret;
272
273 return sprintf(buf, "%pI6\n", gid.raw);
274}
275
276static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
277 char *buf)
278{
279 struct port_table_attribute *tab_attr =
280 container_of(attr, struct port_table_attribute, attr);
281 u16 pkey;
282 ssize_t ret;
283
284 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
285 if (ret)
286 return ret;
287
288 return sprintf(buf, "0x%04x\n", pkey);
289}
290
291#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
292struct port_table_attribute port_pma_attr_##_name = { \
293 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
294 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \
295}
296
297static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
298 char *buf)
299{
300 struct port_table_attribute *tab_attr =
301 container_of(attr, struct port_table_attribute, attr);
302 int offset = tab_attr->index & 0xffff;
303 int width = (tab_attr->index >> 16) & 0xff;
304 struct ib_mad *in_mad = NULL;
305 struct ib_mad *out_mad = NULL;
306 ssize_t ret;
307
308 if (!p->ibdev->process_mad)
309 return sprintf(buf, "N/A (no PMA)\n");
310
311 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
312 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
313 if (!in_mad || !out_mad) {
314 ret = -ENOMEM;
315 goto out;
316 }
317
318 in_mad->mad_hdr.base_version = 1;
319 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
320 in_mad->mad_hdr.class_version = 1;
321 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
322 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */
323
324 in_mad->data[41] = p->port_num; /* PortSelect field */
325
326 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
327 p->port_num, NULL, NULL, in_mad, out_mad) &
328 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
329 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
330 ret = -EINVAL;
331 goto out;
332 }
333
334 switch (width) {
335 case 4:
336 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
337 (4 - (offset % 8))) & 0xf);
338 break;
339 case 8:
340 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
341 break;
342 case 16:
343 ret = sprintf(buf, "%u\n",
344 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
345 break;
346 case 32:
347 ret = sprintf(buf, "%u\n",
348 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
349 break;
350 default:
351 ret = 0;
352 }
353
354out:
355 kfree(in_mad);
356 kfree(out_mad);
357
358 return ret;
359}
360
361static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
362static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
363static PORT_PMA_ATTR(link_downed , 2, 8, 56);
364static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
365static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
366static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
367static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
368static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
369static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
370static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
371static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
372static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
373static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
374static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
375static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
376static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
377
378static struct attribute *pma_attrs[] = {
379 &port_pma_attr_symbol_error.attr.attr,
380 &port_pma_attr_link_error_recovery.attr.attr,
381 &port_pma_attr_link_downed.attr.attr,
382 &port_pma_attr_port_rcv_errors.attr.attr,
383 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
384 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
385 &port_pma_attr_port_xmit_discards.attr.attr,
386 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
387 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
388 &port_pma_attr_local_link_integrity_errors.attr.attr,
389 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
390 &port_pma_attr_VL15_dropped.attr.attr,
391 &port_pma_attr_port_xmit_data.attr.attr,
392 &port_pma_attr_port_rcv_data.attr.attr,
393 &port_pma_attr_port_xmit_packets.attr.attr,
394 &port_pma_attr_port_rcv_packets.attr.attr,
395 NULL
396};
397
398static struct attribute_group pma_group = {
399 .name = "counters",
400 .attrs = pma_attrs
401};
402
403static void ib_port_release(struct kobject *kobj)
404{
405 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
406 struct attribute *a;
407 int i;
408
409 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
410 kfree(a);
411
412 kfree(p->gid_group.attrs);
413
414 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
415 kfree(a);
416
417 kfree(p->pkey_group.attrs);
418
419 kfree(p);
420}
421
422static struct kobj_type port_type = {
423 .release = ib_port_release,
424 .sysfs_ops = &port_sysfs_ops,
425 .default_attrs = port_default_attrs
426};
427
428static void ib_device_release(struct device *device)
429{
430 struct ib_device *dev = container_of(device, struct ib_device, dev);
431
432 kfree(dev);
433}
434
435static int ib_device_uevent(struct device *device,
436 struct kobj_uevent_env *env)
437{
438 struct ib_device *dev = container_of(device, struct ib_device, dev);
439
440 if (add_uevent_var(env, "NAME=%s", dev->name))
441 return -ENOMEM;
442
443 /*
444 * It would be nice to pass the node GUID with the event...
445 */
446
447 return 0;
448}
449
450static struct attribute **
451alloc_group_attrs(ssize_t (*show)(struct ib_port *,
452 struct port_attribute *, char *buf),
453 int len)
454{
455 struct attribute **tab_attr;
456 struct port_table_attribute *element;
457 int i;
458
459 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
460 if (!tab_attr)
461 return NULL;
462
463 for (i = 0; i < len; i++) {
464 element = kzalloc(sizeof(struct port_table_attribute),
465 GFP_KERNEL);
466 if (!element)
467 goto err;
468
469 if (snprintf(element->name, sizeof(element->name),
470 "%d", i) >= sizeof(element->name)) {
471 kfree(element);
472 goto err;
473 }
474
475 element->attr.attr.name = element->name;
476 element->attr.attr.mode = S_IRUGO;
477 element->attr.show = show;
478 element->index = i;
479 sysfs_attr_init(&element->attr.attr);
480
481 tab_attr[i] = &element->attr.attr;
482 }
483
484 return tab_attr;
485
486err:
487 while (--i >= 0)
488 kfree(tab_attr[i]);
489 kfree(tab_attr);
490 return NULL;
491}
492
493static int add_port(struct ib_device *device, int port_num,
494 int (*port_callback)(struct ib_device *,
495 u8, struct kobject *))
496{
497 struct ib_port *p;
498 struct ib_port_attr attr;
499 int i;
500 int ret;
501
502 ret = ib_query_port(device, port_num, &attr);
503 if (ret)
504 return ret;
505
506 p = kzalloc(sizeof *p, GFP_KERNEL);
507 if (!p)
508 return -ENOMEM;
509
510 p->ibdev = device;
511 p->port_num = port_num;
512
513 ret = kobject_init_and_add(&p->kobj, &port_type,
514 kobject_get(device->ports_parent),
515 "%d", port_num);
516 if (ret)
517 goto err_put;
518
519 ret = sysfs_create_group(&p->kobj, &pma_group);
520 if (ret)
521 goto err_put;
522
523 p->gid_group.name = "gids";
524 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
525 if (!p->gid_group.attrs)
526 goto err_remove_pma;
527
528 ret = sysfs_create_group(&p->kobj, &p->gid_group);
529 if (ret)
530 goto err_free_gid;
531
532 p->pkey_group.name = "pkeys";
533 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
534 attr.pkey_tbl_len);
535 if (!p->pkey_group.attrs)
536 goto err_remove_gid;
537
538 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
539 if (ret)
540 goto err_free_pkey;
541
542 if (port_callback) {
543 ret = port_callback(device, port_num, &p->kobj);
544 if (ret)
545 goto err_remove_pkey;
546 }
547
548 list_add_tail(&p->kobj.entry, &device->port_list);
549
550 kobject_uevent(&p->kobj, KOBJ_ADD);
551 return 0;
552
553err_remove_pkey:
554 sysfs_remove_group(&p->kobj, &p->pkey_group);
555
556err_free_pkey:
557 for (i = 0; i < attr.pkey_tbl_len; ++i)
558 kfree(p->pkey_group.attrs[i]);
559
560 kfree(p->pkey_group.attrs);
561
562err_remove_gid:
563 sysfs_remove_group(&p->kobj, &p->gid_group);
564
565err_free_gid:
566 for (i = 0; i < attr.gid_tbl_len; ++i)
567 kfree(p->gid_group.attrs[i]);
568
569 kfree(p->gid_group.attrs);
570
571err_remove_pma:
572 sysfs_remove_group(&p->kobj, &pma_group);
573
574err_put:
575 kobject_put(device->ports_parent);
576 kfree(p);
577 return ret;
578}
579
580static ssize_t show_node_type(struct device *device,
581 struct device_attribute *attr, char *buf)
582{
583 struct ib_device *dev = container_of(device, struct ib_device, dev);
584
585 switch (dev->node_type) {
586 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
587 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
588 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
589 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
590 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
591 }
592}
593
594static ssize_t show_sys_image_guid(struct device *device,
595 struct device_attribute *dev_attr, char *buf)
596{
597 struct ib_device *dev = container_of(device, struct ib_device, dev);
598 struct ib_device_attr attr;
599 ssize_t ret;
600
601 ret = ib_query_device(dev, &attr);
602 if (ret)
603 return ret;
604
605 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
606 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
607 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
608 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
609 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
610}
611
612static ssize_t show_node_guid(struct device *device,
613 struct device_attribute *attr, char *buf)
614{
615 struct ib_device *dev = container_of(device, struct ib_device, dev);
616
617 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
618 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
619 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
620 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
621 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
622}
623
624static ssize_t show_node_desc(struct device *device,
625 struct device_attribute *attr, char *buf)
626{
627 struct ib_device *dev = container_of(device, struct ib_device, dev);
628
629 return sprintf(buf, "%.64s\n", dev->node_desc);
630}
631
632static ssize_t set_node_desc(struct device *device,
633 struct device_attribute *attr,
634 const char *buf, size_t count)
635{
636 struct ib_device *dev = container_of(device, struct ib_device, dev);
637 struct ib_device_modify desc = {};
638 int ret;
639
640 if (!dev->modify_device)
641 return -EIO;
642
643 memcpy(desc.node_desc, buf, min_t(int, count, 64));
644 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
645 if (ret)
646 return ret;
647
648 return count;
649}
650
651static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
652static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
653static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
654static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
655
656static struct device_attribute *ib_class_attributes[] = {
657 &dev_attr_node_type,
658 &dev_attr_sys_image_guid,
659 &dev_attr_node_guid,
660 &dev_attr_node_desc
661};
662
663static struct class ib_class = {
664 .name = "infiniband",
665 .dev_release = ib_device_release,
666 .dev_uevent = ib_device_uevent,
667};
668
669/* Show a given an attribute in the statistics group */
670static ssize_t show_protocol_stat(const struct device *device,
671 struct device_attribute *attr, char *buf,
672 unsigned offset)
673{
674 struct ib_device *dev = container_of(device, struct ib_device, dev);
675 union rdma_protocol_stats stats;
676 ssize_t ret;
677
678 ret = dev->get_protocol_stats(dev, &stats);
679 if (ret)
680 return ret;
681
682 return sprintf(buf, "%llu\n",
683 (unsigned long long) ((u64 *) &stats)[offset]);
684}
685
686/* generate a read-only iwarp statistics attribute */
687#define IW_STATS_ENTRY(name) \
688static ssize_t show_##name(struct device *device, \
689 struct device_attribute *attr, char *buf) \
690{ \
691 return show_protocol_stat(device, attr, buf, \
692 offsetof(struct iw_protocol_stats, name) / \
693 sizeof (u64)); \
694} \
695static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
696
697IW_STATS_ENTRY(ipInReceives);
698IW_STATS_ENTRY(ipInHdrErrors);
699IW_STATS_ENTRY(ipInTooBigErrors);
700IW_STATS_ENTRY(ipInNoRoutes);
701IW_STATS_ENTRY(ipInAddrErrors);
702IW_STATS_ENTRY(ipInUnknownProtos);
703IW_STATS_ENTRY(ipInTruncatedPkts);
704IW_STATS_ENTRY(ipInDiscards);
705IW_STATS_ENTRY(ipInDelivers);
706IW_STATS_ENTRY(ipOutForwDatagrams);
707IW_STATS_ENTRY(ipOutRequests);
708IW_STATS_ENTRY(ipOutDiscards);
709IW_STATS_ENTRY(ipOutNoRoutes);
710IW_STATS_ENTRY(ipReasmTimeout);
711IW_STATS_ENTRY(ipReasmReqds);
712IW_STATS_ENTRY(ipReasmOKs);
713IW_STATS_ENTRY(ipReasmFails);
714IW_STATS_ENTRY(ipFragOKs);
715IW_STATS_ENTRY(ipFragFails);
716IW_STATS_ENTRY(ipFragCreates);
717IW_STATS_ENTRY(ipInMcastPkts);
718IW_STATS_ENTRY(ipOutMcastPkts);
719IW_STATS_ENTRY(ipInBcastPkts);
720IW_STATS_ENTRY(ipOutBcastPkts);
721IW_STATS_ENTRY(tcpRtoAlgorithm);
722IW_STATS_ENTRY(tcpRtoMin);
723IW_STATS_ENTRY(tcpRtoMax);
724IW_STATS_ENTRY(tcpMaxConn);
725IW_STATS_ENTRY(tcpActiveOpens);
726IW_STATS_ENTRY(tcpPassiveOpens);
727IW_STATS_ENTRY(tcpAttemptFails);
728IW_STATS_ENTRY(tcpEstabResets);
729IW_STATS_ENTRY(tcpCurrEstab);
730IW_STATS_ENTRY(tcpInSegs);
731IW_STATS_ENTRY(tcpOutSegs);
732IW_STATS_ENTRY(tcpRetransSegs);
733IW_STATS_ENTRY(tcpInErrs);
734IW_STATS_ENTRY(tcpOutRsts);
735
736static struct attribute *iw_proto_stats_attrs[] = {
737 &dev_attr_ipInReceives.attr,
738 &dev_attr_ipInHdrErrors.attr,
739 &dev_attr_ipInTooBigErrors.attr,
740 &dev_attr_ipInNoRoutes.attr,
741 &dev_attr_ipInAddrErrors.attr,
742 &dev_attr_ipInUnknownProtos.attr,
743 &dev_attr_ipInTruncatedPkts.attr,
744 &dev_attr_ipInDiscards.attr,
745 &dev_attr_ipInDelivers.attr,
746 &dev_attr_ipOutForwDatagrams.attr,
747 &dev_attr_ipOutRequests.attr,
748 &dev_attr_ipOutDiscards.attr,
749 &dev_attr_ipOutNoRoutes.attr,
750 &dev_attr_ipReasmTimeout.attr,
751 &dev_attr_ipReasmReqds.attr,
752 &dev_attr_ipReasmOKs.attr,
753 &dev_attr_ipReasmFails.attr,
754 &dev_attr_ipFragOKs.attr,
755 &dev_attr_ipFragFails.attr,
756 &dev_attr_ipFragCreates.attr,
757 &dev_attr_ipInMcastPkts.attr,
758 &dev_attr_ipOutMcastPkts.attr,
759 &dev_attr_ipInBcastPkts.attr,
760 &dev_attr_ipOutBcastPkts.attr,
761 &dev_attr_tcpRtoAlgorithm.attr,
762 &dev_attr_tcpRtoMin.attr,
763 &dev_attr_tcpRtoMax.attr,
764 &dev_attr_tcpMaxConn.attr,
765 &dev_attr_tcpActiveOpens.attr,
766 &dev_attr_tcpPassiveOpens.attr,
767 &dev_attr_tcpAttemptFails.attr,
768 &dev_attr_tcpEstabResets.attr,
769 &dev_attr_tcpCurrEstab.attr,
770 &dev_attr_tcpInSegs.attr,
771 &dev_attr_tcpOutSegs.attr,
772 &dev_attr_tcpRetransSegs.attr,
773 &dev_attr_tcpInErrs.attr,
774 &dev_attr_tcpOutRsts.attr,
775 NULL
776};
777
778static struct attribute_group iw_stats_group = {
779 .name = "proto_stats",
780 .attrs = iw_proto_stats_attrs,
781};
782
783int ib_device_register_sysfs(struct ib_device *device,
784 int (*port_callback)(struct ib_device *,
785 u8, struct kobject *))
786{
787 struct device *class_dev = &device->dev;
788 int ret;
789 int i;
790
791 class_dev->class = &ib_class;
792 class_dev->parent = device->dma_device;
793 dev_set_name(class_dev, device->name);
794 dev_set_drvdata(class_dev, device);
795
796 INIT_LIST_HEAD(&device->port_list);
797
798 ret = device_register(class_dev);
799 if (ret)
800 goto err;
801
802 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
803 ret = device_create_file(class_dev, ib_class_attributes[i]);
804 if (ret)
805 goto err_unregister;
806 }
807
808 device->ports_parent = kobject_create_and_add("ports",
809 kobject_get(&class_dev->kobj));
810 if (!device->ports_parent) {
811 ret = -ENOMEM;
812 goto err_put;
813 }
814
815 if (device->node_type == RDMA_NODE_IB_SWITCH) {
816 ret = add_port(device, 0, port_callback);
817 if (ret)
818 goto err_put;
819 } else {
820 for (i = 1; i <= device->phys_port_cnt; ++i) {
821 ret = add_port(device, i, port_callback);
822 if (ret)
823 goto err_put;
824 }
825 }
826
827 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {
828 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);
829 if (ret)
830 goto err_put;
831 }
832
833 return 0;
834
835err_put:
836 {
837 struct kobject *p, *t;
838 struct ib_port *port;
839
840 list_for_each_entry_safe(p, t, &device->port_list, entry) {
841 list_del(&p->entry);
842 port = container_of(p, struct ib_port, kobj);
843 sysfs_remove_group(p, &pma_group);
844 sysfs_remove_group(p, &port->pkey_group);
845 sysfs_remove_group(p, &port->gid_group);
846 kobject_put(p);
847 }
848 }
849
850 kobject_put(&class_dev->kobj);
851
852err_unregister:
853 device_unregister(class_dev);
854
855err:
856 return ret;
857}
858
859void ib_device_unregister_sysfs(struct ib_device *device)
860{
861 struct kobject *p, *t;
862 struct ib_port *port;
863
864 /* Hold kobject until ib_dealloc_device() */
865 kobject_get(&device->dev.kobj);
866
867 list_for_each_entry_safe(p, t, &device->port_list, entry) {
868 list_del(&p->entry);
869 port = container_of(p, struct ib_port, kobj);
870 sysfs_remove_group(p, &pma_group);
871 sysfs_remove_group(p, &port->pkey_group);
872 sysfs_remove_group(p, &port->gid_group);
873 kobject_put(p);
874 }
875
876 kobject_put(device->ports_parent);
877 device_unregister(&device->dev);
878}
879
880int ib_sysfs_setup(void)
881{
882 return class_register(&ib_class);
883}
884
885void ib_sysfs_cleanup(void)
886{
887 class_unregister(&ib_class);
888}
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#include "core_priv.h"
36
37#include <linux/slab.h>
38#include <linux/stat.h>
39#include <linux/string.h>
40#include <linux/netdevice.h>
41#include <linux/ethtool.h>
42
43#include <rdma/ib_mad.h>
44#include <rdma/ib_pma.h>
45
46struct ib_port;
47
48struct gid_attr_group {
49 struct ib_port *port;
50 struct kobject kobj;
51 struct attribute_group ndev;
52 struct attribute_group type;
53};
54struct ib_port {
55 struct kobject kobj;
56 struct ib_device *ibdev;
57 struct gid_attr_group *gid_attr_group;
58 struct attribute_group gid_group;
59 struct attribute_group pkey_group;
60 struct attribute_group *pma_table;
61 struct attribute_group *hw_stats_ag;
62 struct rdma_hw_stats *hw_stats;
63 u8 port_num;
64};
65
66struct port_attribute {
67 struct attribute attr;
68 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
69 ssize_t (*store)(struct ib_port *, struct port_attribute *,
70 const char *buf, size_t count);
71};
72
73#define PORT_ATTR(_name, _mode, _show, _store) \
74struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
75
76#define PORT_ATTR_RO(_name) \
77struct port_attribute port_attr_##_name = __ATTR_RO(_name)
78
79struct port_table_attribute {
80 struct port_attribute attr;
81 char name[8];
82 int index;
83 __be16 attr_id;
84};
85
86struct hw_stats_attribute {
87 struct attribute attr;
88 ssize_t (*show)(struct kobject *kobj,
89 struct attribute *attr, char *buf);
90 ssize_t (*store)(struct kobject *kobj,
91 struct attribute *attr,
92 const char *buf,
93 size_t count);
94 int index;
95 u8 port_num;
96};
97
98static ssize_t port_attr_show(struct kobject *kobj,
99 struct attribute *attr, char *buf)
100{
101 struct port_attribute *port_attr =
102 container_of(attr, struct port_attribute, attr);
103 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
104
105 if (!port_attr->show)
106 return -EIO;
107
108 return port_attr->show(p, port_attr, buf);
109}
110
111static const struct sysfs_ops port_sysfs_ops = {
112 .show = port_attr_show
113};
114
115static ssize_t gid_attr_show(struct kobject *kobj,
116 struct attribute *attr, char *buf)
117{
118 struct port_attribute *port_attr =
119 container_of(attr, struct port_attribute, attr);
120 struct ib_port *p = container_of(kobj, struct gid_attr_group,
121 kobj)->port;
122
123 if (!port_attr->show)
124 return -EIO;
125
126 return port_attr->show(p, port_attr, buf);
127}
128
129static const struct sysfs_ops gid_attr_sysfs_ops = {
130 .show = gid_attr_show
131};
132
133static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
134 char *buf)
135{
136 struct ib_port_attr attr;
137 ssize_t ret;
138
139 static const char *state_name[] = {
140 [IB_PORT_NOP] = "NOP",
141 [IB_PORT_DOWN] = "DOWN",
142 [IB_PORT_INIT] = "INIT",
143 [IB_PORT_ARMED] = "ARMED",
144 [IB_PORT_ACTIVE] = "ACTIVE",
145 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
146 };
147
148 ret = ib_query_port(p->ibdev, p->port_num, &attr);
149 if (ret)
150 return ret;
151
152 return sprintf(buf, "%d: %s\n", attr.state,
153 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
154 state_name[attr.state] : "UNKNOWN");
155}
156
157static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
158 char *buf)
159{
160 struct ib_port_attr attr;
161 ssize_t ret;
162
163 ret = ib_query_port(p->ibdev, p->port_num, &attr);
164 if (ret)
165 return ret;
166
167 return sprintf(buf, "0x%x\n", attr.lid);
168}
169
170static ssize_t lid_mask_count_show(struct ib_port *p,
171 struct port_attribute *unused,
172 char *buf)
173{
174 struct ib_port_attr attr;
175 ssize_t ret;
176
177 ret = ib_query_port(p->ibdev, p->port_num, &attr);
178 if (ret)
179 return ret;
180
181 return sprintf(buf, "%d\n", attr.lmc);
182}
183
184static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
185 char *buf)
186{
187 struct ib_port_attr attr;
188 ssize_t ret;
189
190 ret = ib_query_port(p->ibdev, p->port_num, &attr);
191 if (ret)
192 return ret;
193
194 return sprintf(buf, "0x%x\n", attr.sm_lid);
195}
196
197static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
198 char *buf)
199{
200 struct ib_port_attr attr;
201 ssize_t ret;
202
203 ret = ib_query_port(p->ibdev, p->port_num, &attr);
204 if (ret)
205 return ret;
206
207 return sprintf(buf, "%d\n", attr.sm_sl);
208}
209
210static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
211 char *buf)
212{
213 struct ib_port_attr attr;
214 ssize_t ret;
215
216 ret = ib_query_port(p->ibdev, p->port_num, &attr);
217 if (ret)
218 return ret;
219
220 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
221}
222
223static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
224 char *buf)
225{
226 struct ib_port_attr attr;
227 char *speed = "";
228 int rate; /* in deci-Gb/sec */
229 ssize_t ret;
230
231 ret = ib_query_port(p->ibdev, p->port_num, &attr);
232 if (ret)
233 return ret;
234
235 switch (attr.active_speed) {
236 case IB_SPEED_DDR:
237 speed = " DDR";
238 rate = 50;
239 break;
240 case IB_SPEED_QDR:
241 speed = " QDR";
242 rate = 100;
243 break;
244 case IB_SPEED_FDR10:
245 speed = " FDR10";
246 rate = 100;
247 break;
248 case IB_SPEED_FDR:
249 speed = " FDR";
250 rate = 140;
251 break;
252 case IB_SPEED_EDR:
253 speed = " EDR";
254 rate = 250;
255 break;
256 case IB_SPEED_SDR:
257 default: /* default to SDR for invalid rates */
258 rate = 25;
259 break;
260 }
261
262 rate *= ib_width_enum_to_int(attr.active_width);
263 if (rate < 0)
264 return -EINVAL;
265
266 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
267 rate / 10, rate % 10 ? ".5" : "",
268 ib_width_enum_to_int(attr.active_width), speed);
269}
270
271static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
272 char *buf)
273{
274 struct ib_port_attr attr;
275
276 ssize_t ret;
277
278 ret = ib_query_port(p->ibdev, p->port_num, &attr);
279 if (ret)
280 return ret;
281
282 switch (attr.phys_state) {
283 case 1: return sprintf(buf, "1: Sleep\n");
284 case 2: return sprintf(buf, "2: Polling\n");
285 case 3: return sprintf(buf, "3: Disabled\n");
286 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
287 case 5: return sprintf(buf, "5: LinkUp\n");
288 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
289 case 7: return sprintf(buf, "7: Phy Test\n");
290 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
291 }
292}
293
294static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
295 char *buf)
296{
297 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
298 case IB_LINK_LAYER_INFINIBAND:
299 return sprintf(buf, "%s\n", "InfiniBand");
300 case IB_LINK_LAYER_ETHERNET:
301 return sprintf(buf, "%s\n", "Ethernet");
302 default:
303 return sprintf(buf, "%s\n", "Unknown");
304 }
305}
306
307static PORT_ATTR_RO(state);
308static PORT_ATTR_RO(lid);
309static PORT_ATTR_RO(lid_mask_count);
310static PORT_ATTR_RO(sm_lid);
311static PORT_ATTR_RO(sm_sl);
312static PORT_ATTR_RO(cap_mask);
313static PORT_ATTR_RO(rate);
314static PORT_ATTR_RO(phys_state);
315static PORT_ATTR_RO(link_layer);
316
317static struct attribute *port_default_attrs[] = {
318 &port_attr_state.attr,
319 &port_attr_lid.attr,
320 &port_attr_lid_mask_count.attr,
321 &port_attr_sm_lid.attr,
322 &port_attr_sm_sl.attr,
323 &port_attr_cap_mask.attr,
324 &port_attr_rate.attr,
325 &port_attr_phys_state.attr,
326 &port_attr_link_layer.attr,
327 NULL
328};
329
330static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf)
331{
332 if (!gid_attr->ndev)
333 return -EINVAL;
334
335 return sprintf(buf, "%s\n", gid_attr->ndev->name);
336}
337
338static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf)
339{
340 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
341}
342
343static ssize_t _show_port_gid_attr(struct ib_port *p,
344 struct port_attribute *attr,
345 char *buf,
346 size_t (*print)(struct ib_gid_attr *gid_attr,
347 char *buf))
348{
349 struct port_table_attribute *tab_attr =
350 container_of(attr, struct port_table_attribute, attr);
351 union ib_gid gid;
352 struct ib_gid_attr gid_attr = {};
353 ssize_t ret;
354
355 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid,
356 &gid_attr);
357 if (ret)
358 goto err;
359
360 ret = print(&gid_attr, buf);
361
362err:
363 if (gid_attr.ndev)
364 dev_put(gid_attr.ndev);
365 return ret;
366}
367
368static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
369 char *buf)
370{
371 struct port_table_attribute *tab_attr =
372 container_of(attr, struct port_table_attribute, attr);
373 union ib_gid gid;
374 ssize_t ret;
375
376 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL);
377 if (ret)
378 return ret;
379
380 return sprintf(buf, "%pI6\n", gid.raw);
381}
382
383static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
384 struct port_attribute *attr, char *buf)
385{
386 return _show_port_gid_attr(p, attr, buf, print_ndev);
387}
388
389static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
390 struct port_attribute *attr,
391 char *buf)
392{
393 return _show_port_gid_attr(p, attr, buf, print_gid_type);
394}
395
396static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
397 char *buf)
398{
399 struct port_table_attribute *tab_attr =
400 container_of(attr, struct port_table_attribute, attr);
401 u16 pkey;
402 ssize_t ret;
403
404 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
405 if (ret)
406 return ret;
407
408 return sprintf(buf, "0x%04x\n", pkey);
409}
410
411#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
412struct port_table_attribute port_pma_attr_##_name = { \
413 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
414 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \
415 .attr_id = IB_PMA_PORT_COUNTERS , \
416}
417
418#define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
419struct port_table_attribute port_pma_attr_ext_##_name = { \
420 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
421 .index = (_offset) | ((_width) << 16), \
422 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
423}
424
425/*
426 * Get a Perfmgmt MAD block of data.
427 * Returns error code or the number of bytes retrieved.
428 */
429static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
430 void *data, int offset, size_t size)
431{
432 struct ib_mad *in_mad;
433 struct ib_mad *out_mad;
434 size_t mad_size = sizeof(*out_mad);
435 u16 out_mad_pkey_index = 0;
436 ssize_t ret;
437
438 if (!dev->process_mad)
439 return -ENOSYS;
440
441 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
442 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
443 if (!in_mad || !out_mad) {
444 ret = -ENOMEM;
445 goto out;
446 }
447
448 in_mad->mad_hdr.base_version = 1;
449 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
450 in_mad->mad_hdr.class_version = 1;
451 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
452 in_mad->mad_hdr.attr_id = attr;
453
454 if (attr != IB_PMA_CLASS_PORT_INFO)
455 in_mad->data[41] = port_num; /* PortSelect field */
456
457 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY,
458 port_num, NULL, NULL,
459 (const struct ib_mad_hdr *)in_mad, mad_size,
460 (struct ib_mad_hdr *)out_mad, &mad_size,
461 &out_mad_pkey_index) &
462 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
463 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
464 ret = -EINVAL;
465 goto out;
466 }
467 memcpy(data, out_mad->data + offset, size);
468 ret = size;
469out:
470 kfree(in_mad);
471 kfree(out_mad);
472 return ret;
473}
474
475static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
476 char *buf)
477{
478 struct port_table_attribute *tab_attr =
479 container_of(attr, struct port_table_attribute, attr);
480 int offset = tab_attr->index & 0xffff;
481 int width = (tab_attr->index >> 16) & 0xff;
482 ssize_t ret;
483 u8 data[8];
484
485 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
486 40 + offset / 8, sizeof(data));
487 if (ret < 0)
488 return sprintf(buf, "N/A (no PMA)\n");
489
490 switch (width) {
491 case 4:
492 ret = sprintf(buf, "%u\n", (*data >>
493 (4 - (offset % 8))) & 0xf);
494 break;
495 case 8:
496 ret = sprintf(buf, "%u\n", *data);
497 break;
498 case 16:
499 ret = sprintf(buf, "%u\n",
500 be16_to_cpup((__be16 *)data));
501 break;
502 case 32:
503 ret = sprintf(buf, "%u\n",
504 be32_to_cpup((__be32 *)data));
505 break;
506 case 64:
507 ret = sprintf(buf, "%llu\n",
508 be64_to_cpup((__be64 *)data));
509 break;
510
511 default:
512 ret = 0;
513 }
514
515 return ret;
516}
517
518static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
519static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
520static PORT_PMA_ATTR(link_downed , 2, 8, 56);
521static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
522static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
523static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
524static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
525static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
526static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
527static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
528static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
529static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
530static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
531static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
532static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
533static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
534static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320);
535
536/*
537 * Counters added by extended set
538 */
539static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
540static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
541static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
542static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
543static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
544static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
545static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
546static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
547
548static struct attribute *pma_attrs[] = {
549 &port_pma_attr_symbol_error.attr.attr,
550 &port_pma_attr_link_error_recovery.attr.attr,
551 &port_pma_attr_link_downed.attr.attr,
552 &port_pma_attr_port_rcv_errors.attr.attr,
553 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
554 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
555 &port_pma_attr_port_xmit_discards.attr.attr,
556 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
557 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
558 &port_pma_attr_local_link_integrity_errors.attr.attr,
559 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
560 &port_pma_attr_VL15_dropped.attr.attr,
561 &port_pma_attr_port_xmit_data.attr.attr,
562 &port_pma_attr_port_rcv_data.attr.attr,
563 &port_pma_attr_port_xmit_packets.attr.attr,
564 &port_pma_attr_port_rcv_packets.attr.attr,
565 &port_pma_attr_port_xmit_wait.attr.attr,
566 NULL
567};
568
569static struct attribute *pma_attrs_ext[] = {
570 &port_pma_attr_symbol_error.attr.attr,
571 &port_pma_attr_link_error_recovery.attr.attr,
572 &port_pma_attr_link_downed.attr.attr,
573 &port_pma_attr_port_rcv_errors.attr.attr,
574 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
575 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
576 &port_pma_attr_port_xmit_discards.attr.attr,
577 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
578 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
579 &port_pma_attr_local_link_integrity_errors.attr.attr,
580 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
581 &port_pma_attr_VL15_dropped.attr.attr,
582 &port_pma_attr_ext_port_xmit_data.attr.attr,
583 &port_pma_attr_ext_port_rcv_data.attr.attr,
584 &port_pma_attr_ext_port_xmit_packets.attr.attr,
585 &port_pma_attr_port_xmit_wait.attr.attr,
586 &port_pma_attr_ext_port_rcv_packets.attr.attr,
587 &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
588 &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
589 &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
590 &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
591 NULL
592};
593
594static struct attribute *pma_attrs_noietf[] = {
595 &port_pma_attr_symbol_error.attr.attr,
596 &port_pma_attr_link_error_recovery.attr.attr,
597 &port_pma_attr_link_downed.attr.attr,
598 &port_pma_attr_port_rcv_errors.attr.attr,
599 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
600 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
601 &port_pma_attr_port_xmit_discards.attr.attr,
602 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
603 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
604 &port_pma_attr_local_link_integrity_errors.attr.attr,
605 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
606 &port_pma_attr_VL15_dropped.attr.attr,
607 &port_pma_attr_ext_port_xmit_data.attr.attr,
608 &port_pma_attr_ext_port_rcv_data.attr.attr,
609 &port_pma_attr_ext_port_xmit_packets.attr.attr,
610 &port_pma_attr_ext_port_rcv_packets.attr.attr,
611 &port_pma_attr_port_xmit_wait.attr.attr,
612 NULL
613};
614
615static struct attribute_group pma_group = {
616 .name = "counters",
617 .attrs = pma_attrs
618};
619
620static struct attribute_group pma_group_ext = {
621 .name = "counters",
622 .attrs = pma_attrs_ext
623};
624
625static struct attribute_group pma_group_noietf = {
626 .name = "counters",
627 .attrs = pma_attrs_noietf
628};
629
630static void ib_port_release(struct kobject *kobj)
631{
632 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
633 struct attribute *a;
634 int i;
635
636 if (p->gid_group.attrs) {
637 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
638 kfree(a);
639
640 kfree(p->gid_group.attrs);
641 }
642
643 if (p->pkey_group.attrs) {
644 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
645 kfree(a);
646
647 kfree(p->pkey_group.attrs);
648 }
649
650 kfree(p);
651}
652
653static void ib_port_gid_attr_release(struct kobject *kobj)
654{
655 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
656 kobj);
657 struct attribute *a;
658 int i;
659
660 if (g->ndev.attrs) {
661 for (i = 0; (a = g->ndev.attrs[i]); ++i)
662 kfree(a);
663
664 kfree(g->ndev.attrs);
665 }
666
667 if (g->type.attrs) {
668 for (i = 0; (a = g->type.attrs[i]); ++i)
669 kfree(a);
670
671 kfree(g->type.attrs);
672 }
673
674 kfree(g);
675}
676
677static struct kobj_type port_type = {
678 .release = ib_port_release,
679 .sysfs_ops = &port_sysfs_ops,
680 .default_attrs = port_default_attrs
681};
682
683static struct kobj_type gid_attr_type = {
684 .sysfs_ops = &gid_attr_sysfs_ops,
685 .release = ib_port_gid_attr_release
686};
687
688static struct attribute **
689alloc_group_attrs(ssize_t (*show)(struct ib_port *,
690 struct port_attribute *, char *buf),
691 int len)
692{
693 struct attribute **tab_attr;
694 struct port_table_attribute *element;
695 int i;
696
697 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
698 if (!tab_attr)
699 return NULL;
700
701 for (i = 0; i < len; i++) {
702 element = kzalloc(sizeof(struct port_table_attribute),
703 GFP_KERNEL);
704 if (!element)
705 goto err;
706
707 if (snprintf(element->name, sizeof(element->name),
708 "%d", i) >= sizeof(element->name)) {
709 kfree(element);
710 goto err;
711 }
712
713 element->attr.attr.name = element->name;
714 element->attr.attr.mode = S_IRUGO;
715 element->attr.show = show;
716 element->index = i;
717 sysfs_attr_init(&element->attr.attr);
718
719 tab_attr[i] = &element->attr.attr;
720 }
721
722 return tab_attr;
723
724err:
725 while (--i >= 0)
726 kfree(tab_attr[i]);
727 kfree(tab_attr);
728 return NULL;
729}
730
731/*
732 * Figure out which counter table to use depending on
733 * the device capabilities.
734 */
735static struct attribute_group *get_counter_table(struct ib_device *dev,
736 int port_num)
737{
738 struct ib_class_port_info cpi;
739
740 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
741 &cpi, 40, sizeof(cpi)) >= 0) {
742 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
743 /* We have extended counters */
744 return &pma_group_ext;
745
746 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
747 /* But not the IETF ones */
748 return &pma_group_noietf;
749 }
750
751 /* Fall back to normal counters */
752 return &pma_group;
753}
754
755static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
756 u8 port_num, int index)
757{
758 int ret;
759
760 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
761 return 0;
762 ret = dev->get_hw_stats(dev, stats, port_num, index);
763 if (ret < 0)
764 return ret;
765 if (ret == stats->num_counters)
766 stats->timestamp = jiffies;
767
768 return 0;
769}
770
771static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf)
772{
773 return sprintf(buf, "%llu\n", stats->value[index]);
774}
775
776static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
777 char *buf)
778{
779 struct ib_device *dev;
780 struct ib_port *port;
781 struct hw_stats_attribute *hsa;
782 struct rdma_hw_stats *stats;
783 int ret;
784
785 hsa = container_of(attr, struct hw_stats_attribute, attr);
786 if (!hsa->port_num) {
787 dev = container_of((struct device *)kobj,
788 struct ib_device, dev);
789 stats = dev->hw_stats;
790 } else {
791 port = container_of(kobj, struct ib_port, kobj);
792 dev = port->ibdev;
793 stats = port->hw_stats;
794 }
795 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
796 if (ret)
797 return ret;
798 return print_hw_stat(stats, hsa->index, buf);
799}
800
801static ssize_t show_stats_lifespan(struct kobject *kobj,
802 struct attribute *attr,
803 char *buf)
804{
805 struct hw_stats_attribute *hsa;
806 int msecs;
807
808 hsa = container_of(attr, struct hw_stats_attribute, attr);
809 if (!hsa->port_num) {
810 struct ib_device *dev = container_of((struct device *)kobj,
811 struct ib_device, dev);
812 msecs = jiffies_to_msecs(dev->hw_stats->lifespan);
813 } else {
814 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
815 msecs = jiffies_to_msecs(p->hw_stats->lifespan);
816 }
817 return sprintf(buf, "%d\n", msecs);
818}
819
820static ssize_t set_stats_lifespan(struct kobject *kobj,
821 struct attribute *attr,
822 const char *buf, size_t count)
823{
824 struct hw_stats_attribute *hsa;
825 int msecs;
826 int jiffies;
827 int ret;
828
829 ret = kstrtoint(buf, 10, &msecs);
830 if (ret)
831 return ret;
832 if (msecs < 0 || msecs > 10000)
833 return -EINVAL;
834 jiffies = msecs_to_jiffies(msecs);
835 hsa = container_of(attr, struct hw_stats_attribute, attr);
836 if (!hsa->port_num) {
837 struct ib_device *dev = container_of((struct device *)kobj,
838 struct ib_device, dev);
839 dev->hw_stats->lifespan = jiffies;
840 } else {
841 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
842 p->hw_stats->lifespan = jiffies;
843 }
844 return count;
845}
846
847static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
848{
849 struct attribute **attr;
850
851 sysfs_remove_group(kobj, attr_group);
852
853 for (attr = attr_group->attrs; *attr; attr++)
854 kfree(*attr);
855 kfree(attr_group);
856}
857
858static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
859{
860 struct hw_stats_attribute *hsa;
861
862 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
863 if (!hsa)
864 return NULL;
865
866 hsa->attr.name = (char *)name;
867 hsa->attr.mode = S_IRUGO;
868 hsa->show = show_hw_stats;
869 hsa->store = NULL;
870 hsa->index = index;
871 hsa->port_num = port_num;
872
873 return &hsa->attr;
874}
875
876static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
877{
878 struct hw_stats_attribute *hsa;
879
880 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
881 if (!hsa)
882 return NULL;
883
884 hsa->attr.name = name;
885 hsa->attr.mode = S_IWUSR | S_IRUGO;
886 hsa->show = show_stats_lifespan;
887 hsa->store = set_stats_lifespan;
888 hsa->index = 0;
889 hsa->port_num = port_num;
890
891 return &hsa->attr;
892}
893
894static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
895 u8 port_num)
896{
897 struct attribute_group *hsag;
898 struct rdma_hw_stats *stats;
899 int i, ret;
900
901 stats = device->alloc_hw_stats(device, port_num);
902
903 if (!stats)
904 return;
905
906 if (!stats->names || stats->num_counters <= 0)
907 goto err_free_stats;
908
909 /*
910 * Two extra attribue elements here, one for the lifespan entry and
911 * one to NULL terminate the list for the sysfs core code
912 */
913 hsag = kzalloc(sizeof(*hsag) +
914 sizeof(void *) * (stats->num_counters + 2),
915 GFP_KERNEL);
916 if (!hsag)
917 goto err_free_stats;
918
919 ret = device->get_hw_stats(device, stats, port_num,
920 stats->num_counters);
921 if (ret != stats->num_counters)
922 goto err_free_hsag;
923
924 stats->timestamp = jiffies;
925
926 hsag->name = "hw_counters";
927 hsag->attrs = (void *)hsag + sizeof(*hsag);
928
929 for (i = 0; i < stats->num_counters; i++) {
930 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
931 if (!hsag->attrs[i])
932 goto err;
933 sysfs_attr_init(hsag->attrs[i]);
934 }
935
936 /* treat an error here as non-fatal */
937 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
938 if (hsag->attrs[i])
939 sysfs_attr_init(hsag->attrs[i]);
940
941 if (port) {
942 struct kobject *kobj = &port->kobj;
943 ret = sysfs_create_group(kobj, hsag);
944 if (ret)
945 goto err;
946 port->hw_stats_ag = hsag;
947 port->hw_stats = stats;
948 } else {
949 struct kobject *kobj = &device->dev.kobj;
950 ret = sysfs_create_group(kobj, hsag);
951 if (ret)
952 goto err;
953 device->hw_stats_ag = hsag;
954 device->hw_stats = stats;
955 }
956
957 return;
958
959err:
960 for (; i >= 0; i--)
961 kfree(hsag->attrs[i]);
962err_free_hsag:
963 kfree(hsag);
964err_free_stats:
965 kfree(stats);
966 return;
967}
968
969static int add_port(struct ib_device *device, int port_num,
970 int (*port_callback)(struct ib_device *,
971 u8, struct kobject *))
972{
973 struct ib_port *p;
974 struct ib_port_attr attr;
975 int i;
976 int ret;
977
978 ret = ib_query_port(device, port_num, &attr);
979 if (ret)
980 return ret;
981
982 p = kzalloc(sizeof *p, GFP_KERNEL);
983 if (!p)
984 return -ENOMEM;
985
986 p->ibdev = device;
987 p->port_num = port_num;
988
989 ret = kobject_init_and_add(&p->kobj, &port_type,
990 device->ports_parent,
991 "%d", port_num);
992 if (ret) {
993 kfree(p);
994 return ret;
995 }
996
997 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
998 if (!p->gid_attr_group) {
999 ret = -ENOMEM;
1000 goto err_put;
1001 }
1002
1003 p->gid_attr_group->port = p;
1004 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1005 &p->kobj, "gid_attrs");
1006 if (ret) {
1007 kfree(p->gid_attr_group);
1008 goto err_put;
1009 }
1010
1011 p->pma_table = get_counter_table(device, port_num);
1012 ret = sysfs_create_group(&p->kobj, p->pma_table);
1013 if (ret)
1014 goto err_put_gid_attrs;
1015
1016 p->gid_group.name = "gids";
1017 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1018 if (!p->gid_group.attrs) {
1019 ret = -ENOMEM;
1020 goto err_remove_pma;
1021 }
1022
1023 ret = sysfs_create_group(&p->kobj, &p->gid_group);
1024 if (ret)
1025 goto err_free_gid;
1026
1027 p->gid_attr_group->ndev.name = "ndevs";
1028 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1029 attr.gid_tbl_len);
1030 if (!p->gid_attr_group->ndev.attrs) {
1031 ret = -ENOMEM;
1032 goto err_remove_gid;
1033 }
1034
1035 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1036 &p->gid_attr_group->ndev);
1037 if (ret)
1038 goto err_free_gid_ndev;
1039
1040 p->gid_attr_group->type.name = "types";
1041 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1042 attr.gid_tbl_len);
1043 if (!p->gid_attr_group->type.attrs) {
1044 ret = -ENOMEM;
1045 goto err_remove_gid_ndev;
1046 }
1047
1048 ret = sysfs_create_group(&p->gid_attr_group->kobj,
1049 &p->gid_attr_group->type);
1050 if (ret)
1051 goto err_free_gid_type;
1052
1053 p->pkey_group.name = "pkeys";
1054 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
1055 attr.pkey_tbl_len);
1056 if (!p->pkey_group.attrs) {
1057 ret = -ENOMEM;
1058 goto err_remove_gid_type;
1059 }
1060
1061 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
1062 if (ret)
1063 goto err_free_pkey;
1064
1065 if (port_callback) {
1066 ret = port_callback(device, port_num, &p->kobj);
1067 if (ret)
1068 goto err_remove_pkey;
1069 }
1070
1071 /*
1072 * If port == 0, it means we have only one port and the parent
1073 * device, not this port device, should be the holder of the
1074 * hw_counters
1075 */
1076 if (device->alloc_hw_stats && port_num)
1077 setup_hw_stats(device, p, port_num);
1078
1079 list_add_tail(&p->kobj.entry, &device->port_list);
1080
1081 kobject_uevent(&p->kobj, KOBJ_ADD);
1082 return 0;
1083
1084err_remove_pkey:
1085 sysfs_remove_group(&p->kobj, &p->pkey_group);
1086
1087err_free_pkey:
1088 for (i = 0; i < attr.pkey_tbl_len; ++i)
1089 kfree(p->pkey_group.attrs[i]);
1090
1091 kfree(p->pkey_group.attrs);
1092 p->pkey_group.attrs = NULL;
1093
1094err_remove_gid_type:
1095 sysfs_remove_group(&p->gid_attr_group->kobj,
1096 &p->gid_attr_group->type);
1097
1098err_free_gid_type:
1099 for (i = 0; i < attr.gid_tbl_len; ++i)
1100 kfree(p->gid_attr_group->type.attrs[i]);
1101
1102 kfree(p->gid_attr_group->type.attrs);
1103 p->gid_attr_group->type.attrs = NULL;
1104
1105err_remove_gid_ndev:
1106 sysfs_remove_group(&p->gid_attr_group->kobj,
1107 &p->gid_attr_group->ndev);
1108
1109err_free_gid_ndev:
1110 for (i = 0; i < attr.gid_tbl_len; ++i)
1111 kfree(p->gid_attr_group->ndev.attrs[i]);
1112
1113 kfree(p->gid_attr_group->ndev.attrs);
1114 p->gid_attr_group->ndev.attrs = NULL;
1115
1116err_remove_gid:
1117 sysfs_remove_group(&p->kobj, &p->gid_group);
1118
1119err_free_gid:
1120 for (i = 0; i < attr.gid_tbl_len; ++i)
1121 kfree(p->gid_group.attrs[i]);
1122
1123 kfree(p->gid_group.attrs);
1124 p->gid_group.attrs = NULL;
1125
1126err_remove_pma:
1127 sysfs_remove_group(&p->kobj, p->pma_table);
1128
1129err_put_gid_attrs:
1130 kobject_put(&p->gid_attr_group->kobj);
1131
1132err_put:
1133 kobject_put(&p->kobj);
1134 return ret;
1135}
1136
1137static ssize_t show_node_type(struct device *device,
1138 struct device_attribute *attr, char *buf)
1139{
1140 struct ib_device *dev = container_of(device, struct ib_device, dev);
1141
1142 switch (dev->node_type) {
1143 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
1144 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
1145 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
1146 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1147 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1148 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1149 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1150 }
1151}
1152
1153static ssize_t show_sys_image_guid(struct device *device,
1154 struct device_attribute *dev_attr, char *buf)
1155{
1156 struct ib_device *dev = container_of(device, struct ib_device, dev);
1157
1158 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1159 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1160 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1161 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1162 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1163}
1164
1165static ssize_t show_node_guid(struct device *device,
1166 struct device_attribute *attr, char *buf)
1167{
1168 struct ib_device *dev = container_of(device, struct ib_device, dev);
1169
1170 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1171 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1172 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1173 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1174 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1175}
1176
1177static ssize_t show_node_desc(struct device *device,
1178 struct device_attribute *attr, char *buf)
1179{
1180 struct ib_device *dev = container_of(device, struct ib_device, dev);
1181
1182 return sprintf(buf, "%.64s\n", dev->node_desc);
1183}
1184
1185static ssize_t set_node_desc(struct device *device,
1186 struct device_attribute *attr,
1187 const char *buf, size_t count)
1188{
1189 struct ib_device *dev = container_of(device, struct ib_device, dev);
1190 struct ib_device_modify desc = {};
1191 int ret;
1192
1193 if (!dev->modify_device)
1194 return -EIO;
1195
1196 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1197 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1198 if (ret)
1199 return ret;
1200
1201 return count;
1202}
1203
1204static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1205 char *buf)
1206{
1207 struct ib_device *dev = container_of(device, struct ib_device, dev);
1208
1209 ib_get_device_fw_str(dev, buf, PAGE_SIZE);
1210 strlcat(buf, "\n", PAGE_SIZE);
1211 return strlen(buf);
1212}
1213
1214static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
1215static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
1216static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
1217static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
1218static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1219
1220static struct device_attribute *ib_class_attributes[] = {
1221 &dev_attr_node_type,
1222 &dev_attr_sys_image_guid,
1223 &dev_attr_node_guid,
1224 &dev_attr_node_desc,
1225 &dev_attr_fw_ver,
1226};
1227
1228static void free_port_list_attributes(struct ib_device *device)
1229{
1230 struct kobject *p, *t;
1231
1232 list_for_each_entry_safe(p, t, &device->port_list, entry) {
1233 struct ib_port *port = container_of(p, struct ib_port, kobj);
1234 list_del(&p->entry);
1235 if (port->hw_stats) {
1236 kfree(port->hw_stats);
1237 free_hsag(&port->kobj, port->hw_stats_ag);
1238 }
1239 sysfs_remove_group(p, port->pma_table);
1240 sysfs_remove_group(p, &port->pkey_group);
1241 sysfs_remove_group(p, &port->gid_group);
1242 sysfs_remove_group(&port->gid_attr_group->kobj,
1243 &port->gid_attr_group->ndev);
1244 sysfs_remove_group(&port->gid_attr_group->kobj,
1245 &port->gid_attr_group->type);
1246 kobject_put(&port->gid_attr_group->kobj);
1247 kobject_put(p);
1248 }
1249
1250 kobject_put(device->ports_parent);
1251}
1252
1253int ib_device_register_sysfs(struct ib_device *device,
1254 int (*port_callback)(struct ib_device *,
1255 u8, struct kobject *))
1256{
1257 struct device *class_dev = &device->dev;
1258 int ret;
1259 int i;
1260
1261 device->dev.parent = device->dma_device;
1262 ret = dev_set_name(class_dev, "%s", device->name);
1263 if (ret)
1264 return ret;
1265
1266 ret = device_add(class_dev);
1267 if (ret)
1268 goto err;
1269
1270 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
1271 ret = device_create_file(class_dev, ib_class_attributes[i]);
1272 if (ret)
1273 goto err_unregister;
1274 }
1275
1276 device->ports_parent = kobject_create_and_add("ports",
1277 &class_dev->kobj);
1278 if (!device->ports_parent) {
1279 ret = -ENOMEM;
1280 goto err_put;
1281 }
1282
1283 if (rdma_cap_ib_switch(device)) {
1284 ret = add_port(device, 0, port_callback);
1285 if (ret)
1286 goto err_put;
1287 } else {
1288 for (i = 1; i <= device->phys_port_cnt; ++i) {
1289 ret = add_port(device, i, port_callback);
1290 if (ret)
1291 goto err_put;
1292 }
1293 }
1294
1295 if (device->alloc_hw_stats)
1296 setup_hw_stats(device, NULL, 0);
1297
1298 return 0;
1299
1300err_put:
1301 free_port_list_attributes(device);
1302
1303err_unregister:
1304 device_unregister(class_dev);
1305
1306err:
1307 return ret;
1308}
1309
1310void ib_device_unregister_sysfs(struct ib_device *device)
1311{
1312 int i;
1313
1314 /* Hold kobject until ib_dealloc_device() */
1315 kobject_get(&device->dev.kobj);
1316
1317 free_port_list_attributes(device);
1318
1319 if (device->hw_stats) {
1320 kfree(device->hw_stats);
1321 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1322 }
1323
1324 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
1325 device_remove_file(&device->dev, ib_class_attributes[i]);
1326
1327 device_unregister(&device->dev);
1328}