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IB/core: Add gid attributes to sysfs
[linux-2.6-block.git] / drivers / infiniband / core / sysfs.c
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
2a1d9b7f
RD		 3 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
1da177e4
LT		 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.
1da177e4
LT		 33 */
34
35#include "core_priv.h"
36
8c65b4a6 37#include <linux/slab.h>
fc87af74 38#include <linux/stat.h>
8c65b4a6 39#include <linux/string.h>
470be516 40#include <linux/netdevice.h>
8c65b4a6 41
a4d61e84 42#include <rdma/ib_mad.h>
1da177e4 43
470be516
MB		 44struct ib_port;
45
46struct gid_attr_group {
47 struct ib_port *port;
48 struct kobject kobj;
49 struct attribute_group ndev;
50 struct attribute_group type;
51};
1da177e4
LT		 52struct ib_port {
53 struct kobject kobj;
54 struct ib_device *ibdev;
470be516 55 struct gid_attr_group *gid_attr_group;
1da177e4 56 struct attribute_group gid_group;
1da177e4 57 struct attribute_group pkey_group;
1da177e4
LT		 58 u8 port_num;
59};
60
61struct port_attribute {
62 struct attribute attr;
63 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
64 ssize_t (*store)(struct ib_port *, struct port_attribute *,
65 const char *buf, size_t count);
66};
67
68#define PORT_ATTR(_name, _mode, _show, _store) \
69struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
70
71#define PORT_ATTR_RO(_name) \
72struct port_attribute port_attr_##_name = __ATTR_RO(_name)
73
74struct port_table_attribute {
d48593bf
DT		 75 struct port_attribute attr;
76 char name[8];
77 int index;
1da177e4
LT		 78};
79
80static ssize_t port_attr_show(struct kobject *kobj,
81 struct attribute *attr, char *buf)
82{
83 struct port_attribute *port_attr =
84 container_of(attr, struct port_attribute, attr);
85 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
86
87 if (!port_attr->show)
70f2817a 88 return -EIO;
1da177e4
LT		 89
90 return port_attr->show(p, port_attr, buf);
91}
92
52cf25d0 93static const struct sysfs_ops port_sysfs_ops = {
1da177e4
LT		 94 .show = port_attr_show
95};
96
470be516
MB		 97static ssize_t gid_attr_show(struct kobject *kobj,
98 struct attribute *attr, char *buf)
99{
100 struct port_attribute *port_attr =
101 container_of(attr, struct port_attribute, attr);
102 struct ib_port *p = container_of(kobj, struct gid_attr_group,
103 kobj)->port;
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 gid_attr_sysfs_ops = {
112 .show = gid_attr_show
113};
114
1da177e4
LT		 115static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
116 char *buf)
117{
118 struct ib_port_attr attr;
119 ssize_t ret;
120
121 static const char *state_name[] = {
122 [IB_PORT_NOP] = "NOP",
123 [IB_PORT_DOWN] = "DOWN",
124 [IB_PORT_INIT] = "INIT",
125 [IB_PORT_ARMED] = "ARMED",
126 [IB_PORT_ACTIVE] = "ACTIVE",
127 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
128 };
129
130 ret = ib_query_port(p->ibdev, p->port_num, &attr);
131 if (ret)
132 return ret;
133
134 return sprintf(buf, "%d: %s\n", attr.state,
048975ac 135 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
1da177e4
LT		 136 state_name[attr.state] : "UNKNOWN");
137}
138
139static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
140 char *buf)
141{
142 struct ib_port_attr attr;
143 ssize_t ret;
144
145 ret = ib_query_port(p->ibdev, p->port_num, &attr);
146 if (ret)
147 return ret;
148
149 return sprintf(buf, "0x%x\n", attr.lid);
150}
151
152static ssize_t lid_mask_count_show(struct ib_port *p,
153 struct port_attribute *unused,
154 char *buf)
155{
156 struct ib_port_attr attr;
157 ssize_t ret;
158
159 ret = ib_query_port(p->ibdev, p->port_num, &attr);
160 if (ret)
161 return ret;
162
163 return sprintf(buf, "%d\n", attr.lmc);
164}
165
166static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
167 char *buf)
168{
169 struct ib_port_attr attr;
170 ssize_t ret;
171
172 ret = ib_query_port(p->ibdev, p->port_num, &attr);
173 if (ret)
174 return ret;
175
176 return sprintf(buf, "0x%x\n", attr.sm_lid);
177}
178
179static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
180 char *buf)
181{
182 struct ib_port_attr attr;
183 ssize_t ret;
184
185 ret = ib_query_port(p->ibdev, p->port_num, &attr);
186 if (ret)
187 return ret;
188
189 return sprintf(buf, "%d\n", attr.sm_sl);
190}
191
192static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
193 char *buf)
194{
195 struct ib_port_attr attr;
196 ssize_t ret;
197
198 ret = ib_query_port(p->ibdev, p->port_num, &attr);
199 if (ret)
200 return ret;
201
202 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
203}
204
205static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
206 char *buf)
207{
208 struct ib_port_attr attr;
209 char *speed = "";
0559d8dc 210 int rate; /* in deci-Gb/sec */
1da177e4
LT		 211 ssize_t ret;
212
213 ret = ib_query_port(p->ibdev, p->port_num, &attr);
214 if (ret)
215 return ret;
216
217 switch (attr.active_speed) {
2e96691c 218 case IB_SPEED_DDR:
71eeba16 219 speed = " DDR";
e9319b0c 220 rate = 50;
71eeba16 221 break;
2e96691c 222 case IB_SPEED_QDR:
71eeba16 223 speed = " QDR";
e9319b0c 224 rate = 100;
71eeba16 225 break;
2e96691c 226 case IB_SPEED_FDR10:
71eeba16 227 speed = " FDR10";
e9319b0c 228 rate = 100;
71eeba16 229 break;
2e96691c 230 case IB_SPEED_FDR:
71eeba16 231 speed = " FDR";
e9319b0c 232 rate = 140;
71eeba16 233 break;
2e96691c 234 case IB_SPEED_EDR:
71eeba16 235 speed = " EDR";
e9319b0c 236 rate = 250;
71eeba16 237 break;
0559d8dc
RD		 238 case IB_SPEED_SDR:
239 default: /* default to SDR for invalid rates */
240 rate = 25;
241 break;
1da177e4
LT		 242 }
243
71eeba16 244 rate *= ib_width_enum_to_int(attr.active_width);
1da177e4
LT		 245 if (rate < 0)
246 return -EINVAL;
247
248 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
e9319b0c 249 rate / 10, rate % 10 ? ".5" : "",
1da177e4
LT		 250 ib_width_enum_to_int(attr.active_width), speed);
251}
252
253static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
254 char *buf)
255{
256 struct ib_port_attr attr;
257
258 ssize_t ret;
259
260 ret = ib_query_port(p->ibdev, p->port_num, &attr);
261 if (ret)
262 return ret;
263
264 switch (attr.phys_state) {
265 case 1: return sprintf(buf, "1: Sleep\n");
266 case 2: return sprintf(buf, "2: Polling\n");
267 case 3: return sprintf(buf, "3: Disabled\n");
268 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
269 case 5: return sprintf(buf, "5: LinkUp\n");
270 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
271 case 7: return sprintf(buf, "7: Phy Test\n");
272 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
273 }
274}
275
8ad330a0
EC		 276static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
277 char *buf)
278{
279 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
280 case IB_LINK_LAYER_INFINIBAND:
281 return sprintf(buf, "%s\n", "InfiniBand");
282 case IB_LINK_LAYER_ETHERNET:
283 return sprintf(buf, "%s\n", "Ethernet");
284 default:
285 return sprintf(buf, "%s\n", "Unknown");
286 }
287}
288
1da177e4
LT		 289static PORT_ATTR_RO(state);
290static PORT_ATTR_RO(lid);
291static PORT_ATTR_RO(lid_mask_count);
292static PORT_ATTR_RO(sm_lid);
293static PORT_ATTR_RO(sm_sl);
294static PORT_ATTR_RO(cap_mask);
295static PORT_ATTR_RO(rate);
296static PORT_ATTR_RO(phys_state);
8ad330a0 297static PORT_ATTR_RO(link_layer);
1da177e4
LT		 298
299static struct attribute *port_default_attrs[] = {
300 &port_attr_state.attr,
301 &port_attr_lid.attr,
302 &port_attr_lid_mask_count.attr,
303 &port_attr_sm_lid.attr,
304 &port_attr_sm_sl.attr,
305 &port_attr_cap_mask.attr,
306 &port_attr_rate.attr,
307 &port_attr_phys_state.attr,
8ad330a0 308 &port_attr_link_layer.attr,
1da177e4
LT		 309 NULL
310};
311
470be516
MB		 312static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf)
313{
314 if (!gid_attr->ndev)
315 return -EINVAL;
316
317 return sprintf(buf, "%s\n", gid_attr->ndev->name);
318}
319
320static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf)
321{
322 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
323}
324
325static ssize_t _show_port_gid_attr(struct ib_port *p,
326 struct port_attribute *attr,
327 char *buf,
328 size_t (*print)(struct ib_gid_attr *gid_attr,
329 char *buf))
330{
331 struct port_table_attribute *tab_attr =
332 container_of(attr, struct port_table_attribute, attr);
333 union ib_gid gid;
334 struct ib_gid_attr gid_attr = {};
335 ssize_t ret;
336 va_list args;
337
338 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid,
339 &gid_attr);
340 if (ret)
341 goto err;
342
343 ret = print(&gid_attr, buf);
344
345err:
346 if (gid_attr.ndev)
347 dev_put(gid_attr.ndev);
348 va_end(args);
349 return ret;
350}
351
1da177e4
LT		 352static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
353 char *buf)
354{
355 struct port_table_attribute *tab_attr =
356 container_of(attr, struct port_table_attribute, attr);
357 union ib_gid gid;
358 ssize_t ret;
359
55ee3ab2 360 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL);
1da177e4
LT		 361 if (ret)
362 return ret;
363
5b095d98 364 return sprintf(buf, "%pI6\n", gid.raw);
1da177e4
LT		 365}
366
470be516
MB		 367static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
368 struct port_attribute *attr, char *buf)
369{
370 return _show_port_gid_attr(p, attr, buf, print_ndev);
371}
372
373static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
374 struct port_attribute *attr,
375 char *buf)
376{
377 return _show_port_gid_attr(p, attr, buf, print_gid_type);
378}
379
1da177e4
LT		 380static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
381 char *buf)
382{
383 struct port_table_attribute *tab_attr =
384 container_of(attr, struct port_table_attribute, attr);
385 u16 pkey;
386 ssize_t ret;
387
388 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
389 if (ret)
390 return ret;
391
392 return sprintf(buf, "0x%04x\n", pkey);
393}
394
395#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
396struct port_table_attribute port_pma_attr_##_name = { \
397 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
398 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \
399}
400
401static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
402 char *buf)
403{
404 struct port_table_attribute *tab_attr =
405 container_of(attr, struct port_table_attribute, attr);
406 int offset = tab_attr->index & 0xffff;
407 int width = (tab_attr->index >> 16) & 0xff;
408 struct ib_mad *in_mad = NULL;
409 struct ib_mad *out_mad = NULL;
4cd7c947
IW		 410 size_t mad_size = sizeof(*out_mad);
411 u16 out_mad_pkey_index = 0;
1da177e4
LT		 412 ssize_t ret;
413
414 if (!p->ibdev->process_mad)
415 return sprintf(buf, "N/A (no PMA)\n");
416
de6eb66b 417 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
856c52a7 418 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1da177e4
LT		 419 if (!in_mad || !out_mad) {
420 ret = -ENOMEM;
421 goto out;
422 }
423
1da177e4
LT		 424 in_mad->mad_hdr.base_version = 1;
425 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
426 in_mad->mad_hdr.class_version = 1;
427 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
428 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */
429
430 in_mad->data[41] = p->port_num; /* PortSelect field */
431
432 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
4cd7c947
IW		 433 p->port_num, NULL, NULL,
434 (const struct ib_mad_hdr *)in_mad, mad_size,
435 (struct ib_mad_hdr *)out_mad, &mad_size,
436 &out_mad_pkey_index) &
1da177e4
LT		 437 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
438 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
439 ret = -EINVAL;
440 goto out;
441 }
442
443 switch (width) {
444 case 4:
445 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
d8b9f23b 446 (4 - (offset % 8))) & 0xf);
1da177e4
LT		 447 break;
448 case 8:
449 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
450 break;
451 case 16:
452 ret = sprintf(buf, "%u\n",
97f52eb4 453 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
1da177e4
LT		 454 break;
455 case 32:
456 ret = sprintf(buf, "%u\n",
97f52eb4 457 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
1da177e4
LT		 458 break;
459 default:
460 ret = 0;
461 }
462
463out:
464 kfree(in_mad);
465 kfree(out_mad);
466
467 return ret;
468}
469
470static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
471static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
472static PORT_PMA_ATTR(link_downed , 2, 8, 56);
473static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
474static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
475static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
476static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
477static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
478static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
479static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
480static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
481static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
482static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
483static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
484static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
485static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
486
487static struct attribute *pma_attrs[] = {
488 &port_pma_attr_symbol_error.attr.attr,
489 &port_pma_attr_link_error_recovery.attr.attr,
490 &port_pma_attr_link_downed.attr.attr,
491 &port_pma_attr_port_rcv_errors.attr.attr,
492 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
493 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
494 &port_pma_attr_port_xmit_discards.attr.attr,
495 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
496 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
497 &port_pma_attr_local_link_integrity_errors.attr.attr,
498 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
499 &port_pma_attr_VL15_dropped.attr.attr,
500 &port_pma_attr_port_xmit_data.attr.attr,
501 &port_pma_attr_port_rcv_data.attr.attr,
502 &port_pma_attr_port_xmit_packets.attr.attr,
503 &port_pma_attr_port_rcv_packets.attr.attr,
504 NULL
505};
506
507static struct attribute_group pma_group = {
508 .name = "counters",
509 .attrs = pma_attrs
510};
511
512static void ib_port_release(struct kobject *kobj)
513{
514 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
515 struct attribute *a;
516 int i;
517
cad6d02a
HE		 518 if (p->gid_group.attrs) {
519 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
520 kfree(a);
1da177e4 521
cad6d02a
HE		 522 kfree(p->gid_group.attrs);
523 }
d48593bf 524
cad6d02a
HE		 525 if (p->pkey_group.attrs) {
526 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
527 kfree(a);
1da177e4 528
cad6d02a
HE		 529 kfree(p->pkey_group.attrs);
530 }
d48593bf 531
1da177e4
LT		 532 kfree(p);
533}
534
470be516
MB		 535static void ib_port_gid_attr_release(struct kobject *kobj)
536{
537 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
538 kobj);
539 struct attribute *a;
540 int i;
541
542 if (g->ndev.attrs) {
543 for (i = 0; (a = g->ndev.attrs[i]); ++i)
544 kfree(a);
545
546 kfree(g->ndev.attrs);
547 }
548
549 if (g->type.attrs) {
550 for (i = 0; (a = g->type.attrs[i]); ++i)
551 kfree(a);
552
553 kfree(g->type.attrs);
554 }
555
556 kfree(g);
557}
558
1da177e4
LT		 559static struct kobj_type port_type = {
560 .release = ib_port_release,
561 .sysfs_ops = &port_sysfs_ops,
562 .default_attrs = port_default_attrs
563};
564
470be516
MB		 565static struct kobj_type gid_attr_type = {
566 .sysfs_ops = &gid_attr_sysfs_ops,
567 .release = ib_port_gid_attr_release
568};
569
d48593bf
DT		 570static struct attribute **
571alloc_group_attrs(ssize_t (*show)(struct ib_port *,
572 struct port_attribute *, char *buf),
573 int len)
1da177e4 574{
d48593bf
DT		 575 struct attribute **tab_attr;
576 struct port_table_attribute *element;
1da177e4 577 int i;
1da177e4 578
d48593bf
DT		 579 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
580 if (!tab_attr)
581 return NULL;
1da177e4 582
d48593bf 583 for (i = 0; i < len; i++) {
82ca76b6 584 element = kzalloc(sizeof(struct port_table_attribute),
d48593bf
DT		 585 GFP_KERNEL);
586 if (!element)
1da177e4 587 goto err;
1da177e4 588
d48593bf 589 if (snprintf(element->name, sizeof(element->name),
048975ac
RD		 590 "%d", i) >= sizeof(element->name)) {
591 kfree(element);
1da177e4 592 goto err;
048975ac 593 }
1da177e4 594
d48593bf
DT		 595 element->attr.attr.name = element->name;
596 element->attr.attr.mode = S_IRUGO;
d48593bf
DT		 597 element->attr.show = show;
598 element->index = i;
21e3bde9 599 sysfs_attr_init(&element->attr.attr);
1da177e4 600
d48593bf 601 tab_attr[i] = &element->attr.attr;
1da177e4
LT		 602 }
603
d48593bf 604 return tab_attr;
1da177e4 605
d48593bf
DT		 606err:
607 while (--i >= 0)
608 kfree(tab_attr[i]);
609 kfree(tab_attr);
610 return NULL;
1da177e4
LT		 611}
612
9a6edb60
RC		 613static int add_port(struct ib_device *device, int port_num,
614 int (*port_callback)(struct ib_device *,
615 u8, struct kobject *))
1da177e4
LT		 616{
617 struct ib_port *p;
618 struct ib_port_attr attr;
619 int i;
620 int ret;
621
622 ret = ib_query_port(device, port_num, &attr);
623 if (ret)
624 return ret;
625
de6eb66b 626 p = kzalloc(sizeof *p, GFP_KERNEL);
1da177e4
LT		 627 if (!p)
628 return -ENOMEM;
1da177e4
LT		 629
630 p->ibdev = device;
631 p->port_num = port_num;
1da177e4 632
35be0681 633 ret = kobject_init_and_add(&p->kobj, &port_type,
373c0ea1 634 device->ports_parent,
35be0681 635 "%d", port_num);
cad6d02a
HE		 636 if (ret) {
637 kfree(p);
638 return ret;
639 }
1da177e4 640
470be516
MB		 641 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
642 if (!p->gid_attr_group) {
643 ret = -ENOMEM;
644 goto err_put;
645 }
646
647 p->gid_attr_group->port = p;
648 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
649 &p->kobj, "gid_attrs");
650 if (ret) {
651 kfree(p->gid_attr_group);
652 goto err_put;
653 }
654
1da177e4
LT		 655 ret = sysfs_create_group(&p->kobj, &pma_group);
656 if (ret)
470be516 657 goto err_put_gid_attrs;
1da177e4 658
1da177e4 659 p->gid_group.name = "gids";
d48593bf 660 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
80b15043
WY		 661 if (!p->gid_group.attrs) {
662 ret = -ENOMEM;
d48593bf 663 goto err_remove_pma;
80b15043 664 }
1da177e4
LT		 665
666 ret = sysfs_create_group(&p->kobj, &p->gid_group);
667 if (ret)
668 goto err_free_gid;
669
470be516
MB		 670 p->gid_attr_group->ndev.name = "ndevs";
671 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
672 attr.gid_tbl_len);
673 if (!p->gid_attr_group->ndev.attrs) {
674 ret = -ENOMEM;
675 goto err_remove_gid;
676 }
677
678 ret = sysfs_create_group(&p->gid_attr_group->kobj,
679 &p->gid_attr_group->ndev);
680 if (ret)
681 goto err_free_gid_ndev;
682
683 p->gid_attr_group->type.name = "types";
684 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
685 attr.gid_tbl_len);
686 if (!p->gid_attr_group->type.attrs) {
687 ret = -ENOMEM;
688 goto err_remove_gid_ndev;
689 }
690
691 ret = sysfs_create_group(&p->gid_attr_group->kobj,
692 &p->gid_attr_group->type);
693 if (ret)
694 goto err_free_gid_type;
695
1da177e4 696 p->pkey_group.name = "pkeys";
d48593bf
DT		 697 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
698 attr.pkey_tbl_len);
80b15043
WY		 699 if (!p->pkey_group.attrs) {
700 ret = -ENOMEM;
470be516 701 goto err_remove_gid_type;
80b15043 702 }
1da177e4
LT		 703
704 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
705 if (ret)
706 goto err_free_pkey;
707
9a6edb60
RC		 708 if (port_callback) {
709 ret = port_callback(device, port_num, &p->kobj);
710 if (ret)
711 goto err_remove_pkey;
712 }
713
1da177e4
LT		 714 list_add_tail(&p->kobj.entry, &device->port_list);
715
35be0681 716 kobject_uevent(&p->kobj, KOBJ_ADD);
1da177e4
LT		 717 return 0;
718
9a6edb60
RC		 719err_remove_pkey:
720 sysfs_remove_group(&p->kobj, &p->pkey_group);
721
1da177e4 722err_free_pkey:
d48593bf
DT		 723 for (i = 0; i < attr.pkey_tbl_len; ++i)
724 kfree(p->pkey_group.attrs[i]);
1da177e4 725
d48593bf 726 kfree(p->pkey_group.attrs);
cad6d02a 727 p->pkey_group.attrs = NULL;
1da177e4 728
470be516
MB		 729err_remove_gid_type:
730 sysfs_remove_group(&p->gid_attr_group->kobj,
731 &p->gid_attr_group->type);
732
733err_free_gid_type:
734 for (i = 0; i < attr.gid_tbl_len; ++i)
735 kfree(p->gid_attr_group->type.attrs[i]);
736
737 kfree(p->gid_attr_group->type.attrs);
738 p->gid_attr_group->type.attrs = NULL;
739
740err_remove_gid_ndev:
741 sysfs_remove_group(&p->gid_attr_group->kobj,
742 &p->gid_attr_group->ndev);
743
744err_free_gid_ndev:
745 for (i = 0; i < attr.gid_tbl_len; ++i)
746 kfree(p->gid_attr_group->ndev.attrs[i]);
747
748 kfree(p->gid_attr_group->ndev.attrs);
749 p->gid_attr_group->ndev.attrs = NULL;
750
1da177e4
LT		 751err_remove_gid:
752 sysfs_remove_group(&p->kobj, &p->gid_group);
753
754err_free_gid:
d48593bf
DT		 755 for (i = 0; i < attr.gid_tbl_len; ++i)
756 kfree(p->gid_group.attrs[i]);
1da177e4 757
d48593bf 758 kfree(p->gid_group.attrs);
cad6d02a 759 p->gid_group.attrs = NULL;
1da177e4
LT		 760
761err_remove_pma:
762 sysfs_remove_group(&p->kobj, &pma_group);
763
470be516
MB		 764err_put_gid_attrs:
765 kobject_put(&p->gid_attr_group->kobj);
766
1da177e4 767err_put:
cad6d02a 768 kobject_put(&p->kobj);
1da177e4
LT		 769 return ret;
770}
771
f4e91eb4
TJ		 772static ssize_t show_node_type(struct device *device,
773 struct device_attribute *attr, char *buf)
1da177e4 774{
f4e91eb4 775 struct ib_device *dev = container_of(device, struct ib_device, dev);
1da177e4
LT		 776
777 switch (dev->node_type) {
07ebafba
TT		 778 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
779 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
180771a3 780 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
5db5765e 781 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
07ebafba
TT		 782 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
783 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
784 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1da177e4
LT		 785 }
786}
787
f4e91eb4
TJ		 788static ssize_t show_sys_image_guid(struct device *device,
789 struct device_attribute *dev_attr, char *buf)
1da177e4 790{
f4e91eb4 791 struct ib_device *dev = container_of(device, struct ib_device, dev);
1da177e4
LT		 792
793 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
86bee4c9
OG		 794 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
795 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
796 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
797 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1da177e4
LT		 798}
799
f4e91eb4
TJ		 800static ssize_t show_node_guid(struct device *device,
801 struct device_attribute *attr, char *buf)
1da177e4 802{
f4e91eb4 803 struct ib_device *dev = container_of(device, struct ib_device, dev);
1da177e4 804
1da177e4 805 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
cf311cd4
SH		 806 be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
807 be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
808 be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
809 be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1da177e4
LT		 810}
811
f4e91eb4
TJ		 812static ssize_t show_node_desc(struct device *device,
813 struct device_attribute *attr, char *buf)
c5bcbbb9 814{
f4e91eb4 815 struct ib_device *dev = container_of(device, struct ib_device, dev);
c5bcbbb9
RD		 816
817 return sprintf(buf, "%.64s\n", dev->node_desc);
818}
819
f4e91eb4
TJ		 820static ssize_t set_node_desc(struct device *device,
821 struct device_attribute *attr,
822 const char *buf, size_t count)
c5bcbbb9 823{
f4e91eb4 824 struct ib_device *dev = container_of(device, struct ib_device, dev);
c5bcbbb9
RD		 825 struct ib_device_modify desc = {};
826 int ret;
827
828 if (!dev->modify_device)
829 return -EIO;
830
831 memcpy(desc.node_desc, buf, min_t(int, count, 64));
832 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
833 if (ret)
834 return ret;
835
836 return count;
837}
838
f4e91eb4
TJ		 839static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
840static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
841static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
842static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
843
844static struct device_attribute *ib_class_attributes[] = {
845 &dev_attr_node_type,
846 &dev_attr_sys_image_guid,
847 &dev_attr_node_guid,
848 &dev_attr_node_desc
1da177e4
LT		 849};
850
7f624d02
SW		 851/* Show a given an attribute in the statistics group */
852static ssize_t show_protocol_stat(const struct device *device,
853 struct device_attribute *attr, char *buf,
854 unsigned offset)
855{
856 struct ib_device *dev = container_of(device, struct ib_device, dev);
857 union rdma_protocol_stats stats;
858 ssize_t ret;
859
860 ret = dev->get_protocol_stats(dev, &stats);
861 if (ret)
862 return ret;
863
864 return sprintf(buf, "%llu\n",
865 (unsigned long long) ((u64 *) &stats)[offset]);
866}
867
868/* generate a read-only iwarp statistics attribute */
869#define IW_STATS_ENTRY(name) \
870static ssize_t show_##name(struct device *device, \
871 struct device_attribute *attr, char *buf) \
872{ \
873 return show_protocol_stat(device, attr, buf, \
874 offsetof(struct iw_protocol_stats, name) / \
875 sizeof (u64)); \
876} \
877static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
878
879IW_STATS_ENTRY(ipInReceives);
880IW_STATS_ENTRY(ipInHdrErrors);
881IW_STATS_ENTRY(ipInTooBigErrors);
882IW_STATS_ENTRY(ipInNoRoutes);
883IW_STATS_ENTRY(ipInAddrErrors);
884IW_STATS_ENTRY(ipInUnknownProtos);
885IW_STATS_ENTRY(ipInTruncatedPkts);
886IW_STATS_ENTRY(ipInDiscards);
887IW_STATS_ENTRY(ipInDelivers);
888IW_STATS_ENTRY(ipOutForwDatagrams);
889IW_STATS_ENTRY(ipOutRequests);
890IW_STATS_ENTRY(ipOutDiscards);
891IW_STATS_ENTRY(ipOutNoRoutes);
892IW_STATS_ENTRY(ipReasmTimeout);
893IW_STATS_ENTRY(ipReasmReqds);
894IW_STATS_ENTRY(ipReasmOKs);
895IW_STATS_ENTRY(ipReasmFails);
896IW_STATS_ENTRY(ipFragOKs);
897IW_STATS_ENTRY(ipFragFails);
898IW_STATS_ENTRY(ipFragCreates);
899IW_STATS_ENTRY(ipInMcastPkts);
900IW_STATS_ENTRY(ipOutMcastPkts);
901IW_STATS_ENTRY(ipInBcastPkts);
902IW_STATS_ENTRY(ipOutBcastPkts);
903IW_STATS_ENTRY(tcpRtoAlgorithm);
904IW_STATS_ENTRY(tcpRtoMin);
905IW_STATS_ENTRY(tcpRtoMax);
906IW_STATS_ENTRY(tcpMaxConn);
907IW_STATS_ENTRY(tcpActiveOpens);
908IW_STATS_ENTRY(tcpPassiveOpens);
909IW_STATS_ENTRY(tcpAttemptFails);
910IW_STATS_ENTRY(tcpEstabResets);
911IW_STATS_ENTRY(tcpCurrEstab);
912IW_STATS_ENTRY(tcpInSegs);
913IW_STATS_ENTRY(tcpOutSegs);
914IW_STATS_ENTRY(tcpRetransSegs);
915IW_STATS_ENTRY(tcpInErrs);
916IW_STATS_ENTRY(tcpOutRsts);
917
918static struct attribute *iw_proto_stats_attrs[] = {
919 &dev_attr_ipInReceives.attr,
920 &dev_attr_ipInHdrErrors.attr,
921 &dev_attr_ipInTooBigErrors.attr,
922 &dev_attr_ipInNoRoutes.attr,
923 &dev_attr_ipInAddrErrors.attr,
924 &dev_attr_ipInUnknownProtos.attr,
925 &dev_attr_ipInTruncatedPkts.attr,
926 &dev_attr_ipInDiscards.attr,
927 &dev_attr_ipInDelivers.attr,
928 &dev_attr_ipOutForwDatagrams.attr,
929 &dev_attr_ipOutRequests.attr,
930 &dev_attr_ipOutDiscards.attr,
931 &dev_attr_ipOutNoRoutes.attr,
932 &dev_attr_ipReasmTimeout.attr,
933 &dev_attr_ipReasmReqds.attr,
934 &dev_attr_ipReasmOKs.attr,
935 &dev_attr_ipReasmFails.attr,
936 &dev_attr_ipFragOKs.attr,
937 &dev_attr_ipFragFails.attr,
938 &dev_attr_ipFragCreates.attr,
939 &dev_attr_ipInMcastPkts.attr,
940 &dev_attr_ipOutMcastPkts.attr,
941 &dev_attr_ipInBcastPkts.attr,
942 &dev_attr_ipOutBcastPkts.attr,
943 &dev_attr_tcpRtoAlgorithm.attr,
944 &dev_attr_tcpRtoMin.attr,
945 &dev_attr_tcpRtoMax.attr,
946 &dev_attr_tcpMaxConn.attr,
947 &dev_attr_tcpActiveOpens.attr,
948 &dev_attr_tcpPassiveOpens.attr,
949 &dev_attr_tcpAttemptFails.attr,
950 &dev_attr_tcpEstabResets.attr,
951 &dev_attr_tcpCurrEstab.attr,
952 &dev_attr_tcpInSegs.attr,
953 &dev_attr_tcpOutSegs.attr,
954 &dev_attr_tcpRetransSegs.attr,
955 &dev_attr_tcpInErrs.attr,
956 &dev_attr_tcpOutRsts.attr,
957 NULL
958};
959
960static struct attribute_group iw_stats_group = {
961 .name = "proto_stats",
962 .attrs = iw_proto_stats_attrs,
963};
964
584482ac
HE		 965static void free_port_list_attributes(struct ib_device *device)
966{
967 struct kobject *p, *t;
968
969 list_for_each_entry_safe(p, t, &device->port_list, entry) {
970 struct ib_port *port = container_of(p, struct ib_port, kobj);
971 list_del(&p->entry);
972 sysfs_remove_group(p, &pma_group);
973 sysfs_remove_group(p, &port->pkey_group);
974 sysfs_remove_group(p, &port->gid_group);
470be516
MB		 975 sysfs_remove_group(&port->gid_attr_group->kobj,
976 &port->gid_attr_group->ndev);
977 sysfs_remove_group(&port->gid_attr_group->kobj,
978 &port->gid_attr_group->type);
979 kobject_put(&port->gid_attr_group->kobj);
584482ac
HE		 980 kobject_put(p);
981 }
982
983 kobject_put(device->ports_parent);
984}
985
9a6edb60
RC		 986int ib_device_register_sysfs(struct ib_device *device,
987 int (*port_callback)(struct ib_device *,
988 u8, struct kobject *))
1da177e4 989{
f4e91eb4 990 struct device *class_dev = &device->dev;
1da177e4
LT		 991 int ret;
992 int i;
993
55aeed06
JG		 994 device->dev.parent = device->dma_device;
995 ret = dev_set_name(class_dev, "%s", device->name);
996 if (ret)
997 return ret;
1da177e4 998
55aeed06 999 ret = device_add(class_dev);
1da177e4
LT		 1000 if (ret)
1001 goto err;
1002
1003 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
f4e91eb4 1004 ret = device_create_file(class_dev, ib_class_attributes[i]);
1da177e4
LT		 1005 if (ret)
1006 goto err_unregister;
1007 }
1008
35be0681 1009 device->ports_parent = kobject_create_and_add("ports",
373c0ea1 1010 &class_dev->kobj);
c7482b81
LZ		 1011 if (!device->ports_parent) {
1012 ret = -ENOMEM;
1da177e4 1013 goto err_put;
c7482b81 1014 }
1da177e4 1015
4139032b 1016 if (rdma_cap_ib_switch(device)) {
9a6edb60 1017 ret = add_port(device, 0, port_callback);
1da177e4
LT		 1018 if (ret)
1019 goto err_put;
1020 } else {
1da177e4 1021 for (i = 1; i <= device->phys_port_cnt; ++i) {
9a6edb60 1022 ret = add_port(device, i, port_callback);
1da177e4
LT		 1023 if (ret)
1024 goto err_put;
1025 }
1026 }
1027
7f624d02
SW		 1028 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {
1029 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);
1030 if (ret)
1031 goto err_put;
1032 }
1033
1da177e4
LT		 1034 return 0;
1035
1036err_put:
584482ac 1037 free_port_list_attributes(device);
1da177e4 1038
1da177e4 1039err_unregister:
f4e91eb4 1040 device_unregister(class_dev);
1da177e4
LT		 1041
1042err:
1043 return ret;
1044}
1045
1046void ib_device_unregister_sysfs(struct ib_device *device)
1047{
9206dff1 1048 /* Hold kobject until ib_dealloc_device() */
584482ac
HE		 1049 struct kobject *kobj_dev = kobject_get(&device->dev.kobj);
1050 int i;
9206dff1 1051
584482ac
HE		 1052 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats)
1053 sysfs_remove_group(kobj_dev, &iw_stats_group);
1054
1055 free_port_list_attributes(device);
1056
1057 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
1058 device_remove_file(&device->dev, ib_class_attributes[i]);
1da177e4 1059
f4e91eb4 1060 device_unregister(&device->dev);
1da177e4 1061}
Linux 6.x block layer and io_uring tree(s)