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