ib_sysfs.c revision 331772
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 3 * 4 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 5 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved. 6 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 7 * 8 * This software is available to you under a choice of one of two 9 * licenses. You may choose to be licensed under the terms of the GNU 10 * General Public License (GPL) Version 2, available from the file 11 * COPYING in the main directory of this source tree, or the 12 * OpenIB.org BSD license below: 13 * 14 * Redistribution and use in source and binary forms, with or 15 * without modification, are permitted provided that the following 16 * conditions are met: 17 * 18 * - Redistributions of source code must retain the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer. 21 * 22 * - Redistributions in binary form must reproduce the above 23 * copyright notice, this list of conditions and the following 24 * disclaimer in the documentation and/or other materials 25 * provided with the distribution. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 34 * SOFTWARE. 35 * 36 * $FreeBSD: stable/11/sys/ofed/drivers/infiniband/core/ib_sysfs.c 331772 2018-03-30 18:17:33Z hselasky $ 37 */ 38 39#include "core_priv.h" 40 41#include <linux/slab.h> 42#include <linux/string.h> 43#include <linux/netdevice.h> 44#include <linux/fs.h> 45#include <linux/printk.h> 46 47#include <rdma/ib_mad.h> 48#include <rdma/ib_pma.h> 49 50struct ib_port; 51 52struct gid_attr_group { 53 struct ib_port *port; 54 struct kobject kobj; 55 struct attribute_group ndev; 56 struct attribute_group type; 57}; 58struct ib_port { 59 struct kobject kobj; 60 struct ib_device *ibdev; 61 struct gid_attr_group *gid_attr_group; 62 struct attribute_group gid_group; 63 struct attribute_group pkey_group; 64 struct attribute_group *pma_table; 65 struct attribute_group *hw_stats_ag; 66 struct rdma_hw_stats *hw_stats; 67 u8 port_num; 68}; 69 70struct port_attribute { 71 struct attribute attr; 72 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); 73 ssize_t (*store)(struct ib_port *, struct port_attribute *, 74 const char *buf, size_t count); 75}; 76 77#define PORT_ATTR(_name, _mode, _show, _store) \ 78struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 79 80#define PORT_ATTR_RO(_name) \ 81struct port_attribute port_attr_##_name = __ATTR_RO(_name) 82 83struct port_table_attribute { 84 struct port_attribute attr; 85 char name[8]; 86 int index; 87 __be16 attr_id; 88}; 89 90struct hw_stats_attribute { 91 struct attribute attr; 92 ssize_t (*show)(struct kobject *kobj, 93 struct attribute *attr, char *buf); 94 ssize_t (*store)(struct kobject *kobj, 95 struct attribute *attr, 96 const char *buf, 97 size_t count); 98 int index; 99 u8 port_num; 100}; 101 102static ssize_t port_attr_show(struct kobject *kobj, 103 struct attribute *attr, char *buf) 104{ 105 struct port_attribute *port_attr = 106 container_of(attr, struct port_attribute, attr); 107 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 108 109 if (!port_attr->show) 110 return -EIO; 111 112 return port_attr->show(p, port_attr, buf); 113} 114 115static const struct sysfs_ops port_sysfs_ops = { 116 .show = port_attr_show 117}; 118 119static ssize_t gid_attr_show(struct kobject *kobj, 120 struct attribute *attr, char *buf) 121{ 122 struct port_attribute *port_attr = 123 container_of(attr, struct port_attribute, attr); 124 struct ib_port *p = container_of(kobj, struct gid_attr_group, 125 kobj)->port; 126 127 if (!port_attr->show) 128 return -EIO; 129 130 return port_attr->show(p, port_attr, buf); 131} 132 133static const struct sysfs_ops gid_attr_sysfs_ops = { 134 .show = gid_attr_show 135}; 136 137static ssize_t state_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 static const char *state_name[] = { 144 [IB_PORT_NOP] = "NOP", 145 [IB_PORT_DOWN] = "DOWN", 146 [IB_PORT_INIT] = "INIT", 147 [IB_PORT_ARMED] = "ARMED", 148 [IB_PORT_ACTIVE] = "ACTIVE", 149 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 150 }; 151 152 ret = ib_query_port(p->ibdev, p->port_num, &attr); 153 if (ret) 154 return ret; 155 156 return sprintf(buf, "%d: %s\n", attr.state, 157 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 158 state_name[attr.state] : "UNKNOWN"); 159} 160 161static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 162 char *buf) 163{ 164 struct ib_port_attr attr; 165 ssize_t ret; 166 167 ret = ib_query_port(p->ibdev, p->port_num, &attr); 168 if (ret) 169 return ret; 170 171 return sprintf(buf, "0x%x\n", attr.lid); 172} 173 174static ssize_t lid_mask_count_show(struct ib_port *p, 175 struct port_attribute *unused, 176 char *buf) 177{ 178 struct ib_port_attr attr; 179 ssize_t ret; 180 181 ret = ib_query_port(p->ibdev, p->port_num, &attr); 182 if (ret) 183 return ret; 184 185 return sprintf(buf, "%d\n", attr.lmc); 186} 187 188static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, 189 char *buf) 190{ 191 struct ib_port_attr attr; 192 ssize_t ret; 193 194 ret = ib_query_port(p->ibdev, p->port_num, &attr); 195 if (ret) 196 return ret; 197 198 return sprintf(buf, "0x%x\n", attr.sm_lid); 199} 200 201static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, 202 char *buf) 203{ 204 struct ib_port_attr attr; 205 ssize_t ret; 206 207 ret = ib_query_port(p->ibdev, p->port_num, &attr); 208 if (ret) 209 return ret; 210 211 return sprintf(buf, "%d\n", attr.sm_sl); 212} 213 214static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 215 char *buf) 216{ 217 struct ib_port_attr attr; 218 ssize_t ret; 219 220 ret = ib_query_port(p->ibdev, p->port_num, &attr); 221 if (ret) 222 return ret; 223 224 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 225} 226 227static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 228 char *buf) 229{ 230 struct ib_port_attr attr; 231 char *speed = ""; 232 int rate; /* in deci-Gb/sec */ 233 ssize_t ret; 234 235 ret = ib_query_port(p->ibdev, p->port_num, &attr); 236 if (ret) 237 return ret; 238 239 switch (attr.active_speed) { 240 case IB_SPEED_DDR: 241 speed = " DDR"; 242 rate = 50; 243 break; 244 case IB_SPEED_QDR: 245 speed = " QDR"; 246 rate = 100; 247 break; 248 case IB_SPEED_FDR10: 249 speed = " FDR10"; 250 rate = 100; 251 break; 252 case IB_SPEED_FDR: 253 speed = " FDR"; 254 rate = 140; 255 break; 256 case IB_SPEED_EDR: 257 speed = " EDR"; 258 rate = 250; 259 break; 260 case IB_SPEED_SDR: 261 default: /* default to SDR for invalid rates */ 262 rate = 25; 263 break; 264 } 265 266 rate *= ib_width_enum_to_int(attr.active_width); 267 if (rate < 0) 268 return -EINVAL; 269 270 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 271 rate / 10, rate % 10 ? ".5" : "", 272 ib_width_enum_to_int(attr.active_width), speed); 273} 274 275static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 276 char *buf) 277{ 278 struct ib_port_attr attr; 279 280 ssize_t ret; 281 282 ret = ib_query_port(p->ibdev, p->port_num, &attr); 283 if (ret) 284 return ret; 285 286 switch (attr.phys_state) { 287 case 1: return sprintf(buf, "1: Sleep\n"); 288 case 2: return sprintf(buf, "2: Polling\n"); 289 case 3: return sprintf(buf, "3: Disabled\n"); 290 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 291 case 5: return sprintf(buf, "5: LinkUp\n"); 292 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 293 case 7: return sprintf(buf, "7: Phy Test\n"); 294 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 295 } 296} 297 298static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 299 char *buf) 300{ 301 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 302 case IB_LINK_LAYER_INFINIBAND: 303 return sprintf(buf, "%s\n", "InfiniBand"); 304 case IB_LINK_LAYER_ETHERNET: 305 return sprintf(buf, "%s\n", "Ethernet"); 306 default: 307 return sprintf(buf, "%s\n", "Unknown"); 308 } 309} 310 311static PORT_ATTR_RO(state); 312static PORT_ATTR_RO(lid); 313static PORT_ATTR_RO(lid_mask_count); 314static PORT_ATTR_RO(sm_lid); 315static PORT_ATTR_RO(sm_sl); 316static PORT_ATTR_RO(cap_mask); 317static PORT_ATTR_RO(rate); 318static PORT_ATTR_RO(phys_state); 319static PORT_ATTR_RO(link_layer); 320 321static struct attribute *port_default_attrs[] = { 322 &port_attr_state.attr, 323 &port_attr_lid.attr, 324 &port_attr_lid_mask_count.attr, 325 &port_attr_sm_lid.attr, 326 &port_attr_sm_sl.attr, 327 &port_attr_cap_mask.attr, 328 &port_attr_rate.attr, 329 &port_attr_phys_state.attr, 330 &port_attr_link_layer.attr, 331 NULL 332}; 333 334static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf) 335{ 336 if (!gid_attr->ndev) 337 return -EINVAL; 338 339 return sprintf(buf, "%s\n", if_name(gid_attr->ndev)); 340} 341 342static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf) 343{ 344 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type)); 345} 346 347static ssize_t _show_port_gid_attr(struct ib_port *p, 348 struct port_attribute *attr, 349 char *buf, 350 size_t (*print)(struct ib_gid_attr *gid_attr, 351 char *buf)) 352{ 353 struct port_table_attribute *tab_attr = 354 container_of(attr, struct port_table_attribute, attr); 355 union ib_gid gid; 356 struct ib_gid_attr gid_attr = {}; 357 ssize_t ret; 358 359 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, 360 &gid_attr); 361 if (ret) 362 goto err; 363 364 ret = print(&gid_attr, buf); 365 366err: 367 if (gid_attr.ndev) 368 dev_put(gid_attr.ndev); 369 return ret; 370} 371 372static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 373 char *buf) 374{ 375 struct port_table_attribute *tab_attr = 376 container_of(attr, struct port_table_attribute, attr); 377 union ib_gid gid; 378 ssize_t ret; 379 380 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL); 381 if (ret) 382 return ret; 383 384 return sprintf(buf, GID_PRINT_FMT"\n", GID_PRINT_ARGS(gid.raw)); 385} 386 387static ssize_t show_port_gid_attr_ndev(struct ib_port *p, 388 struct port_attribute *attr, char *buf) 389{ 390 return _show_port_gid_attr(p, attr, buf, print_ndev); 391} 392 393static ssize_t show_port_gid_attr_gid_type(struct ib_port *p, 394 struct port_attribute *attr, 395 char *buf) 396{ 397 return _show_port_gid_attr(p, attr, buf, print_gid_type); 398} 399 400static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 401 char *buf) 402{ 403 struct port_table_attribute *tab_attr = 404 container_of(attr, struct port_table_attribute, attr); 405 u16 pkey; 406 ssize_t ret; 407 408 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 409 if (ret) 410 return ret; 411 412 return sprintf(buf, "0x%04x\n", pkey); 413} 414 415#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 416struct port_table_attribute port_pma_attr_##_name = { \ 417 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 418 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \ 419 .attr_id = IB_PMA_PORT_COUNTERS , \ 420} 421 422#define PORT_PMA_ATTR_EXT(_name, _width, _offset) \ 423struct port_table_attribute port_pma_attr_ext_##_name = { \ 424 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 425 .index = (_offset) | ((_width) << 16), \ 426 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \ 427} 428 429/* 430 * Get a Perfmgmt MAD block of data. 431 * Returns error code or the number of bytes retrieved. 432 */ 433static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr, 434 void *data, int offset, size_t size) 435{ 436 struct ib_mad *in_mad; 437 struct ib_mad *out_mad; 438 size_t mad_size = sizeof(*out_mad); 439 u16 out_mad_pkey_index = 0; 440 ssize_t ret; 441 442 if (!dev->process_mad) 443 return -ENOSYS; 444 445 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 446 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 447 if (!in_mad || !out_mad) { 448 ret = -ENOMEM; 449 goto out; 450 } 451 452 in_mad->mad_hdr.base_version = 1; 453 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 454 in_mad->mad_hdr.class_version = 1; 455 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 456 in_mad->mad_hdr.attr_id = attr; 457 458 if (attr != IB_PMA_CLASS_PORT_INFO) 459 in_mad->data[41] = port_num; /* PortSelect field */ 460 461 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY, 462 port_num, NULL, NULL, 463 (const struct ib_mad_hdr *)in_mad, mad_size, 464 (struct ib_mad_hdr *)out_mad, &mad_size, 465 &out_mad_pkey_index) & 466 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 467 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 468 ret = -EINVAL; 469 goto out; 470 } 471 memcpy(data, out_mad->data + offset, size); 472 ret = size; 473out: 474 kfree(in_mad); 475 kfree(out_mad); 476 return ret; 477} 478 479static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 480 char *buf) 481{ 482 struct port_table_attribute *tab_attr = 483 container_of(attr, struct port_table_attribute, attr); 484 int offset = tab_attr->index & 0xffff; 485 int width = (tab_attr->index >> 16) & 0xff; 486 ssize_t ret; 487 u8 data[8]; 488 489 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data, 490 40 + offset / 8, sizeof(data)); 491 if (ret < 0) 492 return sprintf(buf, "N/A (no PMA)\n"); 493 494 switch (width) { 495 case 4: 496 ret = sprintf(buf, "%u\n", (*data >> 497 (4 - (offset % 8))) & 0xf); 498 break; 499 case 8: 500 ret = sprintf(buf, "%u\n", *data); 501 break; 502 case 16: 503 ret = sprintf(buf, "%u\n", 504 be16_to_cpup((__be16 *)data)); 505 break; 506 case 32: 507 ret = sprintf(buf, "%u\n", 508 be32_to_cpup((__be32 *)data)); 509 break; 510 case 64: 511 ret = sprintf(buf, "%llu\n", 512 (unsigned long long)be64_to_cpup((__be64 *)data)); 513 break; 514 515 default: 516 ret = 0; 517 } 518 519 return ret; 520} 521 522static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 523static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 524static PORT_PMA_ATTR(link_downed , 2, 8, 56); 525static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 526static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 527static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 528static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 529static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 530static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 531static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 532static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 533static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 534static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 535static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 536static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 537static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 538static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320); 539 540/* 541 * Counters added by extended set 542 */ 543static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64); 544static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128); 545static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192); 546static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256); 547static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320); 548static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384); 549static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448); 550static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512); 551 552static struct attribute *pma_attrs[] = { 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_port_xmit_data.attr.attr, 566 &port_pma_attr_port_rcv_data.attr.attr, 567 &port_pma_attr_port_xmit_packets.attr.attr, 568 &port_pma_attr_port_rcv_packets.attr.attr, 569 &port_pma_attr_port_xmit_wait.attr.attr, 570 NULL 571}; 572 573static struct attribute *pma_attrs_ext[] = { 574 &port_pma_attr_symbol_error.attr.attr, 575 &port_pma_attr_link_error_recovery.attr.attr, 576 &port_pma_attr_link_downed.attr.attr, 577 &port_pma_attr_port_rcv_errors.attr.attr, 578 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 579 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 580 &port_pma_attr_port_xmit_discards.attr.attr, 581 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 582 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 583 &port_pma_attr_local_link_integrity_errors.attr.attr, 584 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 585 &port_pma_attr_VL15_dropped.attr.attr, 586 &port_pma_attr_ext_port_xmit_data.attr.attr, 587 &port_pma_attr_ext_port_rcv_data.attr.attr, 588 &port_pma_attr_ext_port_xmit_packets.attr.attr, 589 &port_pma_attr_port_xmit_wait.attr.attr, 590 &port_pma_attr_ext_port_rcv_packets.attr.attr, 591 &port_pma_attr_ext_unicast_rcv_packets.attr.attr, 592 &port_pma_attr_ext_unicast_xmit_packets.attr.attr, 593 &port_pma_attr_ext_multicast_rcv_packets.attr.attr, 594 &port_pma_attr_ext_multicast_xmit_packets.attr.attr, 595 NULL 596}; 597 598static struct attribute *pma_attrs_noietf[] = { 599 &port_pma_attr_symbol_error.attr.attr, 600 &port_pma_attr_link_error_recovery.attr.attr, 601 &port_pma_attr_link_downed.attr.attr, 602 &port_pma_attr_port_rcv_errors.attr.attr, 603 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 604 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 605 &port_pma_attr_port_xmit_discards.attr.attr, 606 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 607 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 608 &port_pma_attr_local_link_integrity_errors.attr.attr, 609 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 610 &port_pma_attr_VL15_dropped.attr.attr, 611 &port_pma_attr_ext_port_xmit_data.attr.attr, 612 &port_pma_attr_ext_port_rcv_data.attr.attr, 613 &port_pma_attr_ext_port_xmit_packets.attr.attr, 614 &port_pma_attr_ext_port_rcv_packets.attr.attr, 615 &port_pma_attr_port_xmit_wait.attr.attr, 616 NULL 617}; 618 619static struct attribute_group pma_group = { 620 .name = "counters", 621 .attrs = pma_attrs 622}; 623 624static struct attribute_group pma_group_ext = { 625 .name = "counters", 626 .attrs = pma_attrs_ext 627}; 628 629static struct attribute_group pma_group_noietf = { 630 .name = "counters", 631 .attrs = pma_attrs_noietf 632}; 633 634static void ib_port_release(struct kobject *kobj) 635{ 636 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 637 struct attribute *a; 638 int i; 639 640 if (p->gid_group.attrs) { 641 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 642 kfree(a); 643 644 kfree(p->gid_group.attrs); 645 } 646 647 if (p->pkey_group.attrs) { 648 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 649 kfree(a); 650 651 kfree(p->pkey_group.attrs); 652 } 653 654 kfree(p); 655} 656 657static void ib_port_gid_attr_release(struct kobject *kobj) 658{ 659 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group, 660 kobj); 661 struct attribute *a; 662 int i; 663 664 if (g->ndev.attrs) { 665 for (i = 0; (a = g->ndev.attrs[i]); ++i) 666 kfree(a); 667 668 kfree(g->ndev.attrs); 669 } 670 671 if (g->type.attrs) { 672 for (i = 0; (a = g->type.attrs[i]); ++i) 673 kfree(a); 674 675 kfree(g->type.attrs); 676 } 677 678 kfree(g); 679} 680 681static struct kobj_type port_type = { 682 .release = ib_port_release, 683 .sysfs_ops = &port_sysfs_ops, 684 .default_attrs = port_default_attrs 685}; 686 687static struct kobj_type gid_attr_type = { 688 .sysfs_ops = &gid_attr_sysfs_ops, 689 .release = ib_port_gid_attr_release 690}; 691 692static struct attribute ** 693alloc_group_attrs(ssize_t (*show)(struct ib_port *, 694 struct port_attribute *, char *buf), 695 int len) 696{ 697 struct attribute **tab_attr; 698 struct port_table_attribute *element; 699 int i; 700 701 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 702 if (!tab_attr) 703 return NULL; 704 705 for (i = 0; i < len; i++) { 706 element = kzalloc(sizeof(struct port_table_attribute), 707 GFP_KERNEL); 708 if (!element) 709 goto err; 710 711 if (snprintf(element->name, sizeof(element->name), 712 "%d", i) >= sizeof(element->name)) { 713 kfree(element); 714 goto err; 715 } 716 717 element->attr.attr.name = element->name; 718 element->attr.attr.mode = S_IRUGO; 719 element->attr.show = show; 720 element->index = i; 721 sysfs_attr_init(&element->attr.attr); 722 723 tab_attr[i] = &element->attr.attr; 724 } 725 726 return tab_attr; 727 728err: 729 while (--i >= 0) 730 kfree(tab_attr[i]); 731 kfree(tab_attr); 732 return NULL; 733} 734 735/* 736 * Figure out which counter table to use depending on 737 * the device capabilities. 738 */ 739static struct attribute_group *get_counter_table(struct ib_device *dev, 740 int port_num) 741{ 742 struct ib_class_port_info cpi; 743 744 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO, 745 &cpi, 40, sizeof(cpi)) >= 0) { 746 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH) 747 /* We have extended counters */ 748 return &pma_group_ext; 749 750 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) 751 /* But not the IETF ones */ 752 return &pma_group_noietf; 753 } 754 755 /* Fall back to normal counters */ 756 return &pma_group; 757} 758 759static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats, 760 u8 port_num, int index) 761{ 762 int ret; 763 764 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan)) 765 return 0; 766 ret = dev->get_hw_stats(dev, stats, port_num, index); 767 if (ret < 0) 768 return ret; 769 if (ret == stats->num_counters) 770 stats->timestamp = jiffies; 771 772 return 0; 773} 774 775static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf) 776{ 777 return sprintf(buf, "%llu\n", (unsigned long long)stats->value[index]); 778} 779 780static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr, 781 char *buf) 782{ 783 struct ib_device *dev; 784 struct ib_port *port; 785 struct hw_stats_attribute *hsa; 786 struct rdma_hw_stats *stats; 787 int ret; 788 789 hsa = container_of(attr, struct hw_stats_attribute, attr); 790 if (!hsa->port_num) { 791 dev = container_of((struct device *)kobj, 792 struct ib_device, dev); 793 stats = dev->hw_stats; 794 } else { 795 port = container_of(kobj, struct ib_port, kobj); 796 dev = port->ibdev; 797 stats = port->hw_stats; 798 } 799 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index); 800 if (ret) 801 return ret; 802 return print_hw_stat(stats, hsa->index, buf); 803} 804 805static ssize_t show_stats_lifespan(struct kobject *kobj, 806 struct attribute *attr, 807 char *buf) 808{ 809 struct hw_stats_attribute *hsa; 810 int msecs; 811 812 hsa = container_of(attr, struct hw_stats_attribute, attr); 813 if (!hsa->port_num) { 814 struct ib_device *dev = container_of((struct device *)kobj, 815 struct ib_device, dev); 816 msecs = jiffies_to_msecs(dev->hw_stats->lifespan); 817 } else { 818 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 819 msecs = jiffies_to_msecs(p->hw_stats->lifespan); 820 } 821 return sprintf(buf, "%d\n", msecs); 822} 823 824static ssize_t set_stats_lifespan(struct kobject *kobj, 825 struct attribute *attr, 826 const char *buf, size_t count) 827{ 828 struct hw_stats_attribute *hsa; 829 int msecs; 830 int jiffies; 831 int ret; 832 833 ret = kstrtoint(buf, 10, &msecs); 834 if (ret) 835 return ret; 836 if (msecs < 0 || msecs > 10000) 837 return -EINVAL; 838 jiffies = msecs_to_jiffies(msecs); 839 hsa = container_of(attr, struct hw_stats_attribute, attr); 840 if (!hsa->port_num) { 841 struct ib_device *dev = container_of((struct device *)kobj, 842 struct ib_device, dev); 843 dev->hw_stats->lifespan = jiffies; 844 } else { 845 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 846 p->hw_stats->lifespan = jiffies; 847 } 848 return count; 849} 850 851static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group) 852{ 853 struct attribute **attr; 854 855 sysfs_remove_group(kobj, attr_group); 856 857 for (attr = attr_group->attrs; *attr; attr++) 858 kfree(*attr); 859 kfree(attr_group); 860} 861 862static struct attribute *alloc_hsa(int index, u8 port_num, const char *name) 863{ 864 struct hw_stats_attribute *hsa; 865 866 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 867 if (!hsa) 868 return NULL; 869 870 hsa->attr.name = __DECONST(char *, name); 871 hsa->attr.mode = S_IRUGO; 872 hsa->show = show_hw_stats; 873 hsa->store = NULL; 874 hsa->index = index; 875 hsa->port_num = port_num; 876 877 return &hsa->attr; 878} 879 880static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num) 881{ 882 struct hw_stats_attribute *hsa; 883 884 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 885 if (!hsa) 886 return NULL; 887 888 hsa->attr.name = name; 889 hsa->attr.mode = S_IWUSR | S_IRUGO; 890 hsa->show = show_stats_lifespan; 891 hsa->store = set_stats_lifespan; 892 hsa->index = 0; 893 hsa->port_num = port_num; 894 895 return &hsa->attr; 896} 897 898static void setup_hw_stats(struct ib_device *device, struct ib_port *port, 899 u8 port_num) 900{ 901 struct attribute_group *hsag; 902 struct rdma_hw_stats *stats; 903 int i, ret; 904 905 stats = device->alloc_hw_stats(device, port_num); 906 907 if (!stats) 908 return; 909 910 if (!stats->names || stats->num_counters <= 0) 911 goto err_free_stats; 912 913 /* 914 * Two extra attribue elements here, one for the lifespan entry and 915 * one to NULL terminate the list for the sysfs core code 916 */ 917 hsag = kzalloc(sizeof(*hsag) + 918 sizeof(void *) * (stats->num_counters + 2), 919 GFP_KERNEL); 920 if (!hsag) 921 goto err_free_stats; 922 923 ret = device->get_hw_stats(device, stats, port_num, 924 stats->num_counters); 925 if (ret != stats->num_counters) 926 goto err_free_hsag; 927 928 stats->timestamp = jiffies; 929 930 hsag->name = "hw_counters"; 931 hsag->attrs = (void *)((char *)hsag + sizeof(*hsag)); 932 933 for (i = 0; i < stats->num_counters; i++) { 934 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]); 935 if (!hsag->attrs[i]) 936 goto err; 937 sysfs_attr_init(hsag->attrs[i]); 938 } 939 940 /* treat an error here as non-fatal */ 941 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num); 942 if (hsag->attrs[i]) 943 sysfs_attr_init(hsag->attrs[i]); 944 945 if (port) { 946 struct kobject *kobj = &port->kobj; 947 ret = sysfs_create_group(kobj, hsag); 948 if (ret) 949 goto err; 950 port->hw_stats_ag = hsag; 951 port->hw_stats = stats; 952 } else { 953 struct kobject *kobj = &device->dev.kobj; 954 ret = sysfs_create_group(kobj, hsag); 955 if (ret) 956 goto err; 957 device->hw_stats_ag = hsag; 958 device->hw_stats = stats; 959 } 960 961 return; 962 963err: 964 for (; i >= 0; i--) 965 kfree(hsag->attrs[i]); 966err_free_hsag: 967 kfree(hsag); 968err_free_stats: 969 kfree(stats); 970 return; 971} 972 973static int add_port(struct ib_device *device, int port_num, 974 int (*port_callback)(struct ib_device *, 975 u8, struct kobject *)) 976{ 977 struct ib_port *p; 978 struct ib_port_attr attr; 979 int i; 980 int ret; 981 982 ret = ib_query_port(device, port_num, &attr); 983 if (ret) 984 return ret; 985 986 p = kzalloc(sizeof *p, GFP_KERNEL); 987 if (!p) 988 return -ENOMEM; 989 990 p->ibdev = device; 991 p->port_num = port_num; 992 993 ret = kobject_init_and_add(&p->kobj, &port_type, 994 device->ports_parent, 995 "%d", port_num); 996 if (ret) { 997 kfree(p); 998 return ret; 999 } 1000 1001 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL); 1002 if (!p->gid_attr_group) { 1003 ret = -ENOMEM; 1004 goto err_put; 1005 } 1006 1007 p->gid_attr_group->port = p; 1008 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type, 1009 &p->kobj, "gid_attrs"); 1010 if (ret) { 1011 kfree(p->gid_attr_group); 1012 goto err_put; 1013 } 1014 1015 p->pma_table = get_counter_table(device, port_num); 1016 ret = sysfs_create_group(&p->kobj, p->pma_table); 1017 if (ret) 1018 goto err_put_gid_attrs; 1019 1020 p->gid_group.name = "gids"; 1021 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 1022 if (!p->gid_group.attrs) { 1023 ret = -ENOMEM; 1024 goto err_remove_pma; 1025 } 1026 1027 ret = sysfs_create_group(&p->kobj, &p->gid_group); 1028 if (ret) 1029 goto err_free_gid; 1030 1031 p->gid_attr_group->ndev.name = "ndevs"; 1032 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev, 1033 attr.gid_tbl_len); 1034 if (!p->gid_attr_group->ndev.attrs) { 1035 ret = -ENOMEM; 1036 goto err_remove_gid; 1037 } 1038 1039 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1040 &p->gid_attr_group->ndev); 1041 if (ret) 1042 goto err_free_gid_ndev; 1043 1044 p->gid_attr_group->type.name = "types"; 1045 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type, 1046 attr.gid_tbl_len); 1047 if (!p->gid_attr_group->type.attrs) { 1048 ret = -ENOMEM; 1049 goto err_remove_gid_ndev; 1050 } 1051 1052 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1053 &p->gid_attr_group->type); 1054 if (ret) 1055 goto err_free_gid_type; 1056 1057 p->pkey_group.name = "pkeys"; 1058 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 1059 attr.pkey_tbl_len); 1060 if (!p->pkey_group.attrs) { 1061 ret = -ENOMEM; 1062 goto err_remove_gid_type; 1063 } 1064 1065 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 1066 if (ret) 1067 goto err_free_pkey; 1068 1069 if (port_callback) { 1070 ret = port_callback(device, port_num, &p->kobj); 1071 if (ret) 1072 goto err_remove_pkey; 1073 } 1074 1075 /* 1076 * If port == 0, it means we have only one port and the parent 1077 * device, not this port device, should be the holder of the 1078 * hw_counters 1079 */ 1080 if (device->alloc_hw_stats && port_num) 1081 setup_hw_stats(device, p, port_num); 1082 1083 list_add_tail(&p->kobj.entry, &device->port_list); 1084 1085 return 0; 1086 1087err_remove_pkey: 1088 sysfs_remove_group(&p->kobj, &p->pkey_group); 1089 1090err_free_pkey: 1091 for (i = 0; i < attr.pkey_tbl_len; ++i) 1092 kfree(p->pkey_group.attrs[i]); 1093 1094 kfree(p->pkey_group.attrs); 1095 p->pkey_group.attrs = NULL; 1096 1097err_remove_gid_type: 1098 sysfs_remove_group(&p->gid_attr_group->kobj, 1099 &p->gid_attr_group->type); 1100 1101err_free_gid_type: 1102 for (i = 0; i < attr.gid_tbl_len; ++i) 1103 kfree(p->gid_attr_group->type.attrs[i]); 1104 1105 kfree(p->gid_attr_group->type.attrs); 1106 p->gid_attr_group->type.attrs = NULL; 1107 1108err_remove_gid_ndev: 1109 sysfs_remove_group(&p->gid_attr_group->kobj, 1110 &p->gid_attr_group->ndev); 1111 1112err_free_gid_ndev: 1113 for (i = 0; i < attr.gid_tbl_len; ++i) 1114 kfree(p->gid_attr_group->ndev.attrs[i]); 1115 1116 kfree(p->gid_attr_group->ndev.attrs); 1117 p->gid_attr_group->ndev.attrs = NULL; 1118 1119err_remove_gid: 1120 sysfs_remove_group(&p->kobj, &p->gid_group); 1121 1122err_free_gid: 1123 for (i = 0; i < attr.gid_tbl_len; ++i) 1124 kfree(p->gid_group.attrs[i]); 1125 1126 kfree(p->gid_group.attrs); 1127 p->gid_group.attrs = NULL; 1128 1129err_remove_pma: 1130 sysfs_remove_group(&p->kobj, p->pma_table); 1131 1132err_put_gid_attrs: 1133 kobject_put(&p->gid_attr_group->kobj); 1134 1135err_put: 1136 kobject_put(&p->kobj); 1137 return ret; 1138} 1139 1140static ssize_t show_node_type(struct device *device, 1141 struct device_attribute *attr, char *buf) 1142{ 1143 struct ib_device *dev = container_of(device, struct ib_device, dev); 1144 1145 switch (dev->node_type) { 1146 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 1147 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 1148 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); 1149 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); 1150 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 1151 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 1152 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 1153 } 1154} 1155 1156static ssize_t show_sys_image_guid(struct device *device, 1157 struct device_attribute *dev_attr, char *buf) 1158{ 1159 struct ib_device *dev = container_of(device, struct ib_device, dev); 1160 1161 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1162 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]), 1163 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]), 1164 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]), 1165 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3])); 1166} 1167 1168static ssize_t show_node_guid(struct device *device, 1169 struct device_attribute *attr, char *buf) 1170{ 1171 struct ib_device *dev = container_of(device, struct ib_device, dev); 1172 1173 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1174 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 1175 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 1176 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 1177 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 1178} 1179 1180static ssize_t show_node_desc(struct device *device, 1181 struct device_attribute *attr, char *buf) 1182{ 1183 struct ib_device *dev = container_of(device, struct ib_device, dev); 1184 1185 return sprintf(buf, "%.64s\n", dev->node_desc); 1186} 1187 1188static ssize_t set_node_desc(struct device *device, 1189 struct device_attribute *attr, 1190 const char *buf, size_t count) 1191{ 1192 struct ib_device *dev = container_of(device, struct ib_device, dev); 1193 struct ib_device_modify desc = {}; 1194 int ret; 1195 1196 if (!dev->modify_device) 1197 return -EIO; 1198 1199 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX)); 1200 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 1201 if (ret) 1202 return ret; 1203 1204 return count; 1205} 1206 1207static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1208 char *buf) 1209{ 1210 struct ib_device *dev = container_of(device, struct ib_device, dev); 1211 1212 ib_get_device_fw_str(dev, buf, PAGE_SIZE); 1213 strlcat(buf, "\n", PAGE_SIZE); 1214 return strlen(buf); 1215} 1216 1217static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 1218static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 1219static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 1220static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 1221static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1222 1223static struct device_attribute *ib_class_attributes[] = { 1224 &dev_attr_node_type, 1225 &dev_attr_sys_image_guid, 1226 &dev_attr_node_guid, 1227 &dev_attr_node_desc, 1228 &dev_attr_fw_ver, 1229}; 1230 1231static void free_port_list_attributes(struct ib_device *device) 1232{ 1233 struct kobject *p, *t; 1234 1235 list_for_each_entry_safe(p, t, &device->port_list, entry) { 1236 struct ib_port *port = container_of(p, struct ib_port, kobj); 1237 list_del(&p->entry); 1238 if (port->hw_stats) { 1239 kfree(port->hw_stats); 1240 free_hsag(&port->kobj, port->hw_stats_ag); 1241 } 1242 sysfs_remove_group(p, port->pma_table); 1243 sysfs_remove_group(p, &port->pkey_group); 1244 sysfs_remove_group(p, &port->gid_group); 1245 sysfs_remove_group(&port->gid_attr_group->kobj, 1246 &port->gid_attr_group->ndev); 1247 sysfs_remove_group(&port->gid_attr_group->kobj, 1248 &port->gid_attr_group->type); 1249 kobject_put(&port->gid_attr_group->kobj); 1250 kobject_put(p); 1251 } 1252 1253 kobject_put(device->ports_parent); 1254} 1255 1256int ib_device_register_sysfs(struct ib_device *device, 1257 int (*port_callback)(struct ib_device *, 1258 u8, struct kobject *)) 1259{ 1260 struct device *class_dev = &device->dev; 1261 int ret; 1262 int i; 1263 1264 device->dev.parent = device->dma_device; 1265 ret = dev_set_name(class_dev, "%s", device->name); 1266 if (ret) 1267 return ret; 1268 1269 ret = device_add(class_dev); 1270 if (ret) 1271 goto err; 1272 1273 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 1274 ret = device_create_file(class_dev, ib_class_attributes[i]); 1275 if (ret) 1276 goto err_unregister; 1277 } 1278 1279 device->ports_parent = kobject_create_and_add("ports", 1280 &class_dev->kobj); 1281 if (!device->ports_parent) { 1282 ret = -ENOMEM; 1283 goto err_put; 1284 } 1285 1286 if (rdma_cap_ib_switch(device)) { 1287 ret = add_port(device, 0, port_callback); 1288 if (ret) 1289 goto err_put; 1290 } else { 1291 for (i = 1; i <= device->phys_port_cnt; ++i) { 1292 ret = add_port(device, i, port_callback); 1293 if (ret) 1294 goto err_put; 1295 } 1296 } 1297 1298 if (device->alloc_hw_stats) 1299 setup_hw_stats(device, NULL, 0); 1300 1301 return 0; 1302 1303err_put: 1304 free_port_list_attributes(device); 1305 1306err_unregister: 1307 device_unregister(class_dev); 1308 1309err: 1310 return ret; 1311} 1312 1313void ib_device_unregister_sysfs(struct ib_device *device) 1314{ 1315 int i; 1316 1317 /* Hold kobject until ib_dealloc_device() */ 1318 kobject_get(&device->dev.kobj); 1319 1320 free_port_list_attributes(device); 1321 1322 if (device->hw_stats) { 1323 kfree(device->hw_stats); 1324 free_hsag(&device->dev.kobj, device->hw_stats_ag); 1325 } 1326 1327 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) 1328 device_remove_file(&device->dev, ib_class_attributes[i]); 1329 1330 device_unregister(&device->dev); 1331} 1332