Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/ofed/drivers/infiniband/core/ib_sysfs.c
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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 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include "core_priv.h" 41 42 #include <linux/slab.h> 43 #include <linux/string.h> 44 #include <linux/netdevice.h> 45 #include <linux/fs.h> 46 #include <linux/printk.h> 47 48 #include <rdma/ib_addr.h> 49 #include <rdma/ib_mad.h> 50 #include <rdma/ib_pma.h> 51 52 struct ib_port; 53 54 struct gid_attr_group { 55 struct ib_port *port; 56 struct kobject kobj; 57 struct attribute_group ndev; 58 struct attribute_group type; 59 }; 60 struct ib_port { 61 struct kobject kobj; 62 struct ib_device *ibdev; 63 struct gid_attr_group *gid_attr_group; 64 struct attribute_group gid_group; 65 struct attribute_group pkey_group; 66 struct attribute_group *pma_table; 67 struct attribute_group *hw_stats_ag; 68 struct rdma_hw_stats *hw_stats; 69 u8 port_num; 70 }; 71 72 struct port_attribute { 73 struct attribute attr; 74 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); 75 ssize_t (*store)(struct ib_port *, struct port_attribute *, 76 const char *buf, size_t count); 77 }; 78 79 #define PORT_ATTR(_name, _mode, _show, _store) \ 80 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 81 82 #define PORT_ATTR_RO(_name) \ 83 struct port_attribute port_attr_##_name = __ATTR_RO(_name) 84 85 struct port_table_attribute { 86 struct port_attribute attr; 87 char name[8]; 88 int index; 89 __be16 attr_id; 90 }; 91 92 struct hw_stats_attribute { 93 struct attribute attr; 94 ssize_t (*show)(struct kobject *kobj, 95 struct attribute *attr, char *buf); 96 ssize_t (*store)(struct kobject *kobj, 97 struct attribute *attr, 98 const char *buf, 99 size_t count); 100 int index; 101 u8 port_num; 102 }; 103 104 static ssize_t port_attr_show(struct kobject *kobj, 105 struct attribute *attr, char *buf) 106 { 107 struct port_attribute *port_attr = 108 container_of(attr, struct port_attribute, attr); 109 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 110 111 if (!port_attr->show) 112 return -EIO; 113 114 return port_attr->show(p, port_attr, buf); 115 } 116 117 static ssize_t port_attr_store(struct kobject *kobj, 118 struct attribute *attr, 119 const char *buf, size_t count) 120 { 121 struct port_attribute *port_attr = 122 container_of(attr, struct port_attribute, attr); 123 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 124 125 if (!port_attr->store) 126 return -EIO; 127 return port_attr->store(p, port_attr, buf, count); 128 } 129 130 static const struct sysfs_ops port_sysfs_ops = { 131 .show = port_attr_show, 132 .store = port_attr_store 133 }; 134 135 static ssize_t gid_attr_show(struct kobject *kobj, 136 struct attribute *attr, char *buf) 137 { 138 struct port_attribute *port_attr = 139 container_of(attr, struct port_attribute, attr); 140 struct ib_port *p = container_of(kobj, struct gid_attr_group, 141 kobj)->port; 142 143 if (!port_attr->show) 144 return -EIO; 145 146 return port_attr->show(p, port_attr, buf); 147 } 148 149 static const struct sysfs_ops gid_attr_sysfs_ops = { 150 .show = gid_attr_show 151 }; 152 153 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, 154 char *buf) 155 { 156 struct ib_port_attr attr; 157 ssize_t ret; 158 159 static const char *state_name[] = { 160 [IB_PORT_NOP] = "NOP", 161 [IB_PORT_DOWN] = "DOWN", 162 [IB_PORT_INIT] = "INIT", 163 [IB_PORT_ARMED] = "ARMED", 164 [IB_PORT_ACTIVE] = "ACTIVE", 165 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 166 }; 167 168 ret = ib_query_port(p->ibdev, p->port_num, &attr); 169 if (ret) 170 return ret; 171 172 return sprintf(buf, "%d: %s\n", attr.state, 173 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 174 state_name[attr.state] : "UNKNOWN"); 175 } 176 177 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 178 char *buf) 179 { 180 struct ib_port_attr attr; 181 ssize_t ret; 182 183 ret = ib_query_port(p->ibdev, p->port_num, &attr); 184 if (ret) 185 return ret; 186 187 return sprintf(buf, "0x%x\n", attr.lid); 188 } 189 190 static ssize_t lid_mask_count_show(struct ib_port *p, 191 struct port_attribute *unused, 192 char *buf) 193 { 194 struct ib_port_attr attr; 195 ssize_t ret; 196 197 ret = ib_query_port(p->ibdev, p->port_num, &attr); 198 if (ret) 199 return ret; 200 201 return sprintf(buf, "%d\n", attr.lmc); 202 } 203 204 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, 205 char *buf) 206 { 207 struct ib_port_attr attr; 208 ssize_t ret; 209 210 ret = ib_query_port(p->ibdev, p->port_num, &attr); 211 if (ret) 212 return ret; 213 214 return sprintf(buf, "0x%x\n", attr.sm_lid); 215 } 216 217 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, 218 char *buf) 219 { 220 struct ib_port_attr attr; 221 ssize_t ret; 222 223 ret = ib_query_port(p->ibdev, p->port_num, &attr); 224 if (ret) 225 return ret; 226 227 return sprintf(buf, "%d\n", attr.sm_sl); 228 } 229 230 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 231 char *buf) 232 { 233 struct ib_port_attr attr; 234 ssize_t ret; 235 236 ret = ib_query_port(p->ibdev, p->port_num, &attr); 237 if (ret) 238 return ret; 239 240 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 241 } 242 243 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 244 char *buf) 245 { 246 struct ib_port_attr attr; 247 char *speed = ""; 248 int rate; /* in deci-Gb/sec */ 249 ssize_t ret; 250 251 ret = ib_query_port(p->ibdev, p->port_num, &attr); 252 if (ret) 253 return ret; 254 255 switch (attr.active_speed) { 256 case IB_SPEED_DDR: 257 speed = " DDR"; 258 rate = 50; 259 break; 260 case IB_SPEED_QDR: 261 speed = " QDR"; 262 rate = 100; 263 break; 264 case IB_SPEED_FDR10: 265 speed = " FDR10"; 266 rate = 100; 267 break; 268 case IB_SPEED_FDR: 269 speed = " FDR"; 270 rate = 140; 271 break; 272 case IB_SPEED_EDR: 273 speed = " EDR"; 274 rate = 250; 275 break; 276 case IB_SPEED_HDR: 277 speed = " HDR"; 278 rate = 500; 279 break; 280 case IB_SPEED_NDR: 281 speed = " NDR"; 282 rate = 1000; 283 break; 284 case IB_SPEED_SDR: 285 default: /* default to SDR for invalid rates */ 286 speed = " SDR"; 287 rate = 25; 288 break; 289 } 290 291 rate *= ib_width_enum_to_int(attr.active_width); 292 if (rate < 0) 293 return -EINVAL; 294 295 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 296 rate / 10, rate % 10 ? ".5" : "", 297 ib_width_enum_to_int(attr.active_width), speed); 298 } 299 300 static const char *phys_state_to_str(enum ib_port_phys_state phys_state) 301 { 302 static const char * phys_state_str[] = { 303 "<unknown>", 304 "Sleep", 305 "Polling", 306 "Disabled", 307 "PortConfigurationTraining", 308 "LinkUp", 309 "LinkErrorRecovery", 310 "Phy Test", 311 }; 312 313 if (phys_state < ARRAY_SIZE(phys_state_str)) 314 return phys_state_str[phys_state]; 315 return "<unknown>"; 316 } 317 318 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 319 char *buf) 320 { 321 struct ib_port_attr attr; 322 323 ssize_t ret; 324 325 ret = ib_query_port(p->ibdev, p->port_num, &attr); 326 if (ret) 327 return ret; 328 329 return sprintf(buf, "%d: %s\n", attr.phys_state, 330 phys_state_to_str(attr.phys_state)); 331 } 332 333 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 334 char *buf) 335 { 336 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 337 case IB_LINK_LAYER_INFINIBAND: 338 return sprintf(buf, "%s\n", "InfiniBand"); 339 case IB_LINK_LAYER_ETHERNET: 340 return sprintf(buf, "%s\n", "Ethernet"); 341 default: 342 return sprintf(buf, "%s\n", "Unknown"); 343 } 344 } 345 346 static PORT_ATTR_RO(state); 347 static PORT_ATTR_RO(lid); 348 static PORT_ATTR_RO(lid_mask_count); 349 static PORT_ATTR_RO(sm_lid); 350 static PORT_ATTR_RO(sm_sl); 351 static PORT_ATTR_RO(cap_mask); 352 static PORT_ATTR_RO(rate); 353 static PORT_ATTR_RO(phys_state); 354 static PORT_ATTR_RO(link_layer); 355 356 static struct attribute *port_default_attrs[] = { 357 &port_attr_state.attr, 358 &port_attr_lid.attr, 359 &port_attr_lid_mask_count.attr, 360 &port_attr_sm_lid.attr, 361 &port_attr_sm_sl.attr, 362 &port_attr_cap_mask.attr, 363 &port_attr_rate.attr, 364 &port_attr_phys_state.attr, 365 &port_attr_link_layer.attr, 366 NULL 367 }; 368 369 static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf) 370 { 371 if (!gid_attr->ndev) 372 return -EINVAL; 373 374 return sprintf(buf, "%s\n", if_name(gid_attr->ndev)); 375 } 376 377 static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf) 378 { 379 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type)); 380 } 381 382 static ssize_t _show_port_gid_attr(struct ib_port *p, 383 struct port_attribute *attr, 384 char *buf, 385 size_t (*print)(struct ib_gid_attr *gid_attr, 386 char *buf)) 387 { 388 struct port_table_attribute *tab_attr = 389 container_of(attr, struct port_table_attribute, attr); 390 union ib_gid gid; 391 struct ib_gid_attr gid_attr = {}; 392 ssize_t ret; 393 394 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, 395 &gid_attr); 396 if (ret) 397 goto err; 398 399 ret = print(&gid_attr, buf); 400 401 err: 402 if (gid_attr.ndev) 403 dev_put(gid_attr.ndev); 404 return ret; 405 } 406 407 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 408 char *buf) 409 { 410 struct port_table_attribute *tab_attr = 411 container_of(attr, struct port_table_attribute, attr); 412 union ib_gid gid; 413 ssize_t ret; 414 415 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL); 416 if (ret) 417 return ret; 418 419 return sprintf(buf, GID_PRINT_FMT"\n", GID_PRINT_ARGS(gid.raw)); 420 } 421 422 static ssize_t show_port_gid_attr_ndev(struct ib_port *p, 423 struct port_attribute *attr, char *buf) 424 { 425 return _show_port_gid_attr(p, attr, buf, print_ndev); 426 } 427 428 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p, 429 struct port_attribute *attr, 430 char *buf) 431 { 432 return _show_port_gid_attr(p, attr, buf, print_gid_type); 433 } 434 435 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 436 char *buf) 437 { 438 struct port_table_attribute *tab_attr = 439 container_of(attr, struct port_table_attribute, attr); 440 u16 pkey; 441 ssize_t ret; 442 443 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 444 if (ret) 445 return ret; 446 447 return sprintf(buf, "0x%04x\n", pkey); 448 } 449 450 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 451 struct port_table_attribute port_pma_attr_##_name = { \ 452 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 453 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \ 454 .attr_id = IB_PMA_PORT_COUNTERS , \ 455 } 456 457 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \ 458 struct port_table_attribute port_pma_attr_ext_##_name = { \ 459 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 460 .index = (_offset) | ((_width) << 16), \ 461 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \ 462 } 463 464 /* 465 * Get a Perfmgmt MAD block of data. 466 * Returns error code or the number of bytes retrieved. 467 */ 468 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr, 469 void *data, int offset, size_t size) 470 { 471 struct ib_mad *in_mad; 472 struct ib_mad *out_mad; 473 size_t mad_size = sizeof(*out_mad); 474 u16 out_mad_pkey_index = 0; 475 ssize_t ret; 476 477 if (!dev->process_mad) 478 return -ENOSYS; 479 480 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 481 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 482 if (!in_mad || !out_mad) { 483 ret = -ENOMEM; 484 goto out; 485 } 486 487 in_mad->mad_hdr.base_version = 1; 488 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 489 in_mad->mad_hdr.class_version = 1; 490 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 491 in_mad->mad_hdr.attr_id = attr; 492 493 if (attr != IB_PMA_CLASS_PORT_INFO) 494 in_mad->data[41] = port_num; /* PortSelect field */ 495 496 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY, 497 port_num, NULL, NULL, 498 (const struct ib_mad_hdr *)in_mad, mad_size, 499 (struct ib_mad_hdr *)out_mad, &mad_size, 500 &out_mad_pkey_index) & 501 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 502 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 503 ret = -EINVAL; 504 goto out; 505 } 506 memcpy(data, out_mad->data + offset, size); 507 ret = size; 508 out: 509 kfree(in_mad); 510 kfree(out_mad); 511 return ret; 512 } 513 514 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 515 char *buf) 516 { 517 struct port_table_attribute *tab_attr = 518 container_of(attr, struct port_table_attribute, attr); 519 int offset = tab_attr->index & 0xffff; 520 int width = (tab_attr->index >> 16) & 0xff; 521 ssize_t ret; 522 u8 data[8]; 523 524 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data, 525 40 + offset / 8, sizeof(data)); 526 if (ret < 0) 527 return ret; 528 529 switch (width) { 530 case 4: 531 ret = sprintf(buf, "%u\n", (*data >> 532 (4 - (offset % 8))) & 0xf); 533 break; 534 case 8: 535 ret = sprintf(buf, "%u\n", *data); 536 break; 537 case 16: 538 ret = sprintf(buf, "%u\n", 539 be16_to_cpup((__be16 *)data)); 540 break; 541 case 32: 542 ret = sprintf(buf, "%u\n", 543 be32_to_cpup((__be32 *)data)); 544 break; 545 case 64: 546 ret = sprintf(buf, "%llu\n", 547 (unsigned long long)be64_to_cpup((__be64 *)data)); 548 break; 549 550 default: 551 ret = 0; 552 } 553 554 return ret; 555 } 556 557 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 558 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 559 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 560 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 561 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 562 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 563 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 564 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 565 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 566 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 567 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 568 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 569 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 570 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 571 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 572 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 573 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320); 574 575 /* 576 * Counters added by extended set 577 */ 578 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64); 579 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128); 580 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192); 581 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256); 582 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320); 583 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384); 584 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448); 585 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512); 586 587 static struct attribute *pma_attrs[] = { 588 &port_pma_attr_symbol_error.attr.attr, 589 &port_pma_attr_link_error_recovery.attr.attr, 590 &port_pma_attr_link_downed.attr.attr, 591 &port_pma_attr_port_rcv_errors.attr.attr, 592 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 593 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 594 &port_pma_attr_port_xmit_discards.attr.attr, 595 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 596 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 597 &port_pma_attr_local_link_integrity_errors.attr.attr, 598 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 599 &port_pma_attr_VL15_dropped.attr.attr, 600 &port_pma_attr_port_xmit_data.attr.attr, 601 &port_pma_attr_port_rcv_data.attr.attr, 602 &port_pma_attr_port_xmit_packets.attr.attr, 603 &port_pma_attr_port_rcv_packets.attr.attr, 604 &port_pma_attr_port_xmit_wait.attr.attr, 605 NULL 606 }; 607 608 static struct attribute *pma_attrs_ext[] = { 609 &port_pma_attr_symbol_error.attr.attr, 610 &port_pma_attr_link_error_recovery.attr.attr, 611 &port_pma_attr_link_downed.attr.attr, 612 &port_pma_attr_port_rcv_errors.attr.attr, 613 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 614 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 615 &port_pma_attr_port_xmit_discards.attr.attr, 616 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 617 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 618 &port_pma_attr_local_link_integrity_errors.attr.attr, 619 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 620 &port_pma_attr_VL15_dropped.attr.attr, 621 &port_pma_attr_ext_port_xmit_data.attr.attr, 622 &port_pma_attr_ext_port_rcv_data.attr.attr, 623 &port_pma_attr_ext_port_xmit_packets.attr.attr, 624 &port_pma_attr_port_xmit_wait.attr.attr, 625 &port_pma_attr_ext_port_rcv_packets.attr.attr, 626 &port_pma_attr_ext_unicast_rcv_packets.attr.attr, 627 &port_pma_attr_ext_unicast_xmit_packets.attr.attr, 628 &port_pma_attr_ext_multicast_rcv_packets.attr.attr, 629 &port_pma_attr_ext_multicast_xmit_packets.attr.attr, 630 NULL 631 }; 632 633 static struct attribute *pma_attrs_noietf[] = { 634 &port_pma_attr_symbol_error.attr.attr, 635 &port_pma_attr_link_error_recovery.attr.attr, 636 &port_pma_attr_link_downed.attr.attr, 637 &port_pma_attr_port_rcv_errors.attr.attr, 638 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 639 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 640 &port_pma_attr_port_xmit_discards.attr.attr, 641 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 642 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 643 &port_pma_attr_local_link_integrity_errors.attr.attr, 644 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 645 &port_pma_attr_VL15_dropped.attr.attr, 646 &port_pma_attr_ext_port_xmit_data.attr.attr, 647 &port_pma_attr_ext_port_rcv_data.attr.attr, 648 &port_pma_attr_ext_port_xmit_packets.attr.attr, 649 &port_pma_attr_ext_port_rcv_packets.attr.attr, 650 &port_pma_attr_port_xmit_wait.attr.attr, 651 NULL 652 }; 653 654 static struct attribute_group pma_group = { 655 .name = "counters", 656 .attrs = pma_attrs 657 }; 658 659 static struct attribute_group pma_group_ext = { 660 .name = "counters", 661 .attrs = pma_attrs_ext 662 }; 663 664 static struct attribute_group pma_group_noietf = { 665 .name = "counters", 666 .attrs = pma_attrs_noietf 667 }; 668 669 static void ib_port_release(struct kobject *kobj) 670 { 671 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 672 struct attribute *a; 673 int i; 674 675 if (p->gid_group.attrs) { 676 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 677 kfree(a); 678 679 kfree(p->gid_group.attrs); 680 } 681 682 if (p->pkey_group.attrs) { 683 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 684 kfree(a); 685 686 kfree(p->pkey_group.attrs); 687 } 688 689 kfree(p); 690 } 691 692 static void ib_port_gid_attr_release(struct kobject *kobj) 693 { 694 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group, 695 kobj); 696 struct attribute *a; 697 int i; 698 699 if (g->ndev.attrs) { 700 for (i = 0; (a = g->ndev.attrs[i]); ++i) 701 kfree(a); 702 703 kfree(g->ndev.attrs); 704 } 705 706 if (g->type.attrs) { 707 for (i = 0; (a = g->type.attrs[i]); ++i) 708 kfree(a); 709 710 kfree(g->type.attrs); 711 } 712 713 kfree(g); 714 } 715 716 static struct kobj_type port_type = { 717 .release = ib_port_release, 718 .sysfs_ops = &port_sysfs_ops, 719 .default_attrs = port_default_attrs 720 }; 721 722 static struct kobj_type gid_attr_type = { 723 .sysfs_ops = &gid_attr_sysfs_ops, 724 .release = ib_port_gid_attr_release 725 }; 726 727 static struct attribute ** 728 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 729 struct port_attribute *, char *buf), 730 int len) 731 { 732 struct attribute **tab_attr; 733 struct port_table_attribute *element; 734 int i; 735 736 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 737 if (!tab_attr) 738 return NULL; 739 740 for (i = 0; i < len; i++) { 741 element = kzalloc(sizeof(struct port_table_attribute), 742 GFP_KERNEL); 743 if (!element) 744 goto err; 745 746 if (snprintf(element->name, sizeof(element->name), 747 "%d", i) >= sizeof(element->name)) { 748 kfree(element); 749 goto err; 750 } 751 752 element->attr.attr.name = element->name; 753 element->attr.attr.mode = S_IRUGO; 754 element->attr.show = show; 755 element->index = i; 756 sysfs_attr_init(&element->attr.attr); 757 758 tab_attr[i] = &element->attr.attr; 759 } 760 761 return tab_attr; 762 763 err: 764 while (--i >= 0) 765 kfree(tab_attr[i]); 766 kfree(tab_attr); 767 return NULL; 768 } 769 770 /* 771 * Figure out which counter table to use depending on 772 * the device capabilities. 773 */ 774 static struct attribute_group *get_counter_table(struct ib_device *dev, 775 int port_num) 776 { 777 struct ib_class_port_info cpi; 778 779 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO, 780 &cpi, 40, sizeof(cpi)) >= 0) { 781 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH) 782 /* We have extended counters */ 783 return &pma_group_ext; 784 785 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) 786 /* But not the IETF ones */ 787 return &pma_group_noietf; 788 } 789 790 /* Fall back to normal counters */ 791 return &pma_group; 792 } 793 794 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats, 795 u8 port_num, int index) 796 { 797 int ret; 798 799 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan)) 800 return 0; 801 ret = dev->get_hw_stats(dev, stats, port_num, index); 802 if (ret < 0) 803 return ret; 804 if (ret == stats->num_counters) 805 stats->timestamp = jiffies; 806 807 return 0; 808 } 809 810 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf) 811 { 812 return sprintf(buf, "%llu\n", (unsigned long long)stats->value[index]); 813 } 814 815 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr, 816 char *buf) 817 { 818 struct ib_device *dev; 819 struct ib_port *port; 820 struct hw_stats_attribute *hsa; 821 struct rdma_hw_stats *stats; 822 int ret; 823 824 hsa = container_of(attr, struct hw_stats_attribute, attr); 825 if (!hsa->port_num) { 826 dev = container_of((struct device *)kobj, 827 struct ib_device, dev); 828 stats = dev->hw_stats; 829 } else { 830 port = container_of(kobj, struct ib_port, kobj); 831 dev = port->ibdev; 832 stats = port->hw_stats; 833 } 834 mutex_lock(&stats->lock); 835 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index); 836 if (ret) 837 goto unlock; 838 ret = print_hw_stat(stats, hsa->index, buf); 839 unlock: 840 mutex_unlock(&stats->lock); 841 842 return ret; 843 } 844 845 static ssize_t show_stats_lifespan(struct kobject *kobj, 846 struct attribute *attr, 847 char *buf) 848 { 849 struct hw_stats_attribute *hsa; 850 struct rdma_hw_stats *stats; 851 int msecs; 852 853 hsa = container_of(attr, struct hw_stats_attribute, attr); 854 if (!hsa->port_num) { 855 struct ib_device *dev = container_of((struct device *)kobj, 856 struct ib_device, dev); 857 858 stats = dev->hw_stats; 859 } else { 860 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 861 862 stats = p->hw_stats; 863 } 864 865 mutex_lock(&stats->lock); 866 msecs = jiffies_to_msecs(stats->lifespan); 867 mutex_unlock(&stats->lock); 868 869 return sprintf(buf, "%d\n", msecs); 870 } 871 872 static ssize_t set_stats_lifespan(struct kobject *kobj, 873 struct attribute *attr, 874 const char *buf, size_t count) 875 { 876 struct hw_stats_attribute *hsa; 877 struct rdma_hw_stats *stats; 878 int msecs; 879 int jiffies; 880 int ret; 881 882 ret = kstrtoint(buf, 10, &msecs); 883 if (ret) 884 return ret; 885 if (msecs < 0 || msecs > 10000) 886 return -EINVAL; 887 jiffies = msecs_to_jiffies(msecs); 888 hsa = container_of(attr, struct hw_stats_attribute, attr); 889 if (!hsa->port_num) { 890 struct ib_device *dev = container_of((struct device *)kobj, 891 struct ib_device, dev); 892 893 stats = dev->hw_stats; 894 } else { 895 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 896 897 stats = p->hw_stats; 898 } 899 900 mutex_lock(&stats->lock); 901 stats->lifespan = jiffies; 902 mutex_unlock(&stats->lock); 903 904 return count; 905 } 906 907 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group) 908 { 909 struct attribute **attr; 910 911 sysfs_remove_group(kobj, attr_group); 912 913 for (attr = attr_group->attrs; *attr; attr++) 914 kfree(*attr); 915 kfree(attr_group); 916 } 917 918 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name) 919 { 920 struct hw_stats_attribute *hsa; 921 922 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 923 if (!hsa) 924 return NULL; 925 926 hsa->attr.name = __DECONST(char *, name); 927 hsa->attr.mode = S_IRUGO; 928 hsa->show = show_hw_stats; 929 hsa->store = NULL; 930 hsa->index = index; 931 hsa->port_num = port_num; 932 933 return &hsa->attr; 934 } 935 936 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num) 937 { 938 struct hw_stats_attribute *hsa; 939 940 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 941 if (!hsa) 942 return NULL; 943 944 hsa->attr.name = name; 945 hsa->attr.mode = S_IWUSR | S_IRUGO; 946 hsa->show = show_stats_lifespan; 947 hsa->store = set_stats_lifespan; 948 hsa->index = 0; 949 hsa->port_num = port_num; 950 951 return &hsa->attr; 952 } 953 954 static void setup_hw_stats(struct ib_device *device, struct ib_port *port, 955 u8 port_num) 956 { 957 struct attribute_group *hsag; 958 struct rdma_hw_stats *stats; 959 int i, ret; 960 961 stats = device->alloc_hw_stats(device, port_num); 962 963 if (!stats) 964 return; 965 966 if (!stats->names || stats->num_counters <= 0) 967 goto err_free_stats; 968 969 /* 970 * Two extra attribue elements here, one for the lifespan entry and 971 * one to NULL terminate the list for the sysfs core code 972 */ 973 hsag = kzalloc(sizeof(*hsag) + 974 sizeof(void *) * (stats->num_counters + 2), 975 GFP_KERNEL); 976 if (!hsag) 977 goto err_free_stats; 978 979 ret = device->get_hw_stats(device, stats, port_num, 980 stats->num_counters); 981 if (ret != stats->num_counters) 982 goto err_free_hsag; 983 984 stats->timestamp = jiffies; 985 986 hsag->name = "hw_counters"; 987 hsag->attrs = (void *)((char *)hsag + sizeof(*hsag)); 988 989 for (i = 0; i < stats->num_counters; i++) { 990 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]); 991 if (!hsag->attrs[i]) 992 goto err; 993 sysfs_attr_init(hsag->attrs[i]); 994 } 995 996 mutex_init(&stats->lock); 997 /* treat an error here as non-fatal */ 998 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num); 999 if (hsag->attrs[i]) 1000 sysfs_attr_init(hsag->attrs[i]); 1001 1002 if (port) { 1003 struct kobject *kobj = &port->kobj; 1004 ret = sysfs_create_group(kobj, hsag); 1005 if (ret) 1006 goto err; 1007 port->hw_stats_ag = hsag; 1008 port->hw_stats = stats; 1009 } else { 1010 struct kobject *kobj = &device->dev.kobj; 1011 ret = sysfs_create_group(kobj, hsag); 1012 if (ret) 1013 goto err; 1014 device->hw_stats_ag = hsag; 1015 device->hw_stats = stats; 1016 } 1017 1018 return; 1019 1020 err: 1021 for (; i >= 0; i--) 1022 kfree(hsag->attrs[i]); 1023 err_free_hsag: 1024 kfree(hsag); 1025 err_free_stats: 1026 kfree(stats); 1027 return; 1028 } 1029 1030 static int add_port(struct ib_device *device, int port_num, 1031 int (*port_callback)(struct ib_device *, 1032 u8, struct kobject *)) 1033 { 1034 struct ib_port *p; 1035 struct ib_port_attr attr; 1036 int i; 1037 int ret; 1038 1039 ret = ib_query_port(device, port_num, &attr); 1040 if (ret) 1041 return ret; 1042 1043 p = kzalloc(sizeof *p, GFP_KERNEL); 1044 if (!p) 1045 return -ENOMEM; 1046 1047 p->ibdev = device; 1048 p->port_num = port_num; 1049 1050 ret = kobject_init_and_add(&p->kobj, &port_type, 1051 device->ports_parent, 1052 "%d", port_num); 1053 if (ret) { 1054 kfree(p); 1055 return ret; 1056 } 1057 1058 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL); 1059 if (!p->gid_attr_group) { 1060 ret = -ENOMEM; 1061 goto err_put; 1062 } 1063 1064 p->gid_attr_group->port = p; 1065 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type, 1066 &p->kobj, "gid_attrs"); 1067 if (ret) { 1068 kfree(p->gid_attr_group); 1069 goto err_put; 1070 } 1071 1072 if (device->process_mad) { 1073 p->pma_table = get_counter_table(device, port_num); 1074 ret = sysfs_create_group(&p->kobj, p->pma_table); 1075 if (ret) 1076 goto err_put_gid_attrs; 1077 } 1078 1079 p->gid_group.name = "gids"; 1080 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 1081 if (!p->gid_group.attrs) { 1082 ret = -ENOMEM; 1083 goto err_remove_pma; 1084 } 1085 1086 ret = sysfs_create_group(&p->kobj, &p->gid_group); 1087 if (ret) 1088 goto err_free_gid; 1089 1090 p->gid_attr_group->ndev.name = "ndevs"; 1091 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev, 1092 attr.gid_tbl_len); 1093 if (!p->gid_attr_group->ndev.attrs) { 1094 ret = -ENOMEM; 1095 goto err_remove_gid; 1096 } 1097 1098 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1099 &p->gid_attr_group->ndev); 1100 if (ret) 1101 goto err_free_gid_ndev; 1102 1103 p->gid_attr_group->type.name = "types"; 1104 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type, 1105 attr.gid_tbl_len); 1106 if (!p->gid_attr_group->type.attrs) { 1107 ret = -ENOMEM; 1108 goto err_remove_gid_ndev; 1109 } 1110 1111 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1112 &p->gid_attr_group->type); 1113 if (ret) 1114 goto err_free_gid_type; 1115 1116 p->pkey_group.name = "pkeys"; 1117 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 1118 attr.pkey_tbl_len); 1119 if (!p->pkey_group.attrs) { 1120 ret = -ENOMEM; 1121 goto err_remove_gid_type; 1122 } 1123 1124 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 1125 if (ret) 1126 goto err_free_pkey; 1127 1128 if (port_callback) { 1129 ret = port_callback(device, port_num, &p->kobj); 1130 if (ret) 1131 goto err_remove_pkey; 1132 } 1133 1134 /* 1135 * If port == 0, it means we have only one port and the parent 1136 * device, not this port device, should be the holder of the 1137 * hw_counters 1138 */ 1139 if (device->alloc_hw_stats && port_num) 1140 setup_hw_stats(device, p, port_num); 1141 1142 list_add_tail(&p->kobj.entry, &device->port_list); 1143 1144 return 0; 1145 1146 err_remove_pkey: 1147 sysfs_remove_group(&p->kobj, &p->pkey_group); 1148 1149 err_free_pkey: 1150 for (i = 0; i < attr.pkey_tbl_len; ++i) 1151 kfree(p->pkey_group.attrs[i]); 1152 1153 kfree(p->pkey_group.attrs); 1154 p->pkey_group.attrs = NULL; 1155 1156 err_remove_gid_type: 1157 sysfs_remove_group(&p->gid_attr_group->kobj, 1158 &p->gid_attr_group->type); 1159 1160 err_free_gid_type: 1161 for (i = 0; i < attr.gid_tbl_len; ++i) 1162 kfree(p->gid_attr_group->type.attrs[i]); 1163 1164 kfree(p->gid_attr_group->type.attrs); 1165 p->gid_attr_group->type.attrs = NULL; 1166 1167 err_remove_gid_ndev: 1168 sysfs_remove_group(&p->gid_attr_group->kobj, 1169 &p->gid_attr_group->ndev); 1170 1171 err_free_gid_ndev: 1172 for (i = 0; i < attr.gid_tbl_len; ++i) 1173 kfree(p->gid_attr_group->ndev.attrs[i]); 1174 1175 kfree(p->gid_attr_group->ndev.attrs); 1176 p->gid_attr_group->ndev.attrs = NULL; 1177 1178 err_remove_gid: 1179 sysfs_remove_group(&p->kobj, &p->gid_group); 1180 1181 err_free_gid: 1182 for (i = 0; i < attr.gid_tbl_len; ++i) 1183 kfree(p->gid_group.attrs[i]); 1184 1185 kfree(p->gid_group.attrs); 1186 p->gid_group.attrs = NULL; 1187 1188 err_remove_pma: 1189 if (p->pma_table) 1190 sysfs_remove_group(&p->kobj, p->pma_table); 1191 1192 err_put_gid_attrs: 1193 kobject_put(&p->gid_attr_group->kobj); 1194 1195 err_put: 1196 kobject_put(&p->kobj); 1197 return ret; 1198 } 1199 1200 static ssize_t show_node_type(struct device *device, 1201 struct device_attribute *attr, char *buf) 1202 { 1203 struct ib_device *dev = container_of(device, struct ib_device, dev); 1204 1205 switch (dev->node_type) { 1206 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 1207 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 1208 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); 1209 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); 1210 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 1211 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 1212 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 1213 } 1214 } 1215 1216 static ssize_t show_sys_image_guid(struct device *device, 1217 struct device_attribute *dev_attr, char *buf) 1218 { 1219 struct ib_device *dev = container_of(device, struct ib_device, dev); 1220 1221 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1222 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]), 1223 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]), 1224 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]), 1225 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3])); 1226 } 1227 1228 static ssize_t show_node_guid(struct device *device, 1229 struct device_attribute *attr, char *buf) 1230 { 1231 struct ib_device *dev = container_of(device, struct ib_device, dev); 1232 1233 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1234 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 1235 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 1236 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 1237 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 1238 } 1239 1240 static ssize_t show_node_desc(struct device *device, 1241 struct device_attribute *attr, char *buf) 1242 { 1243 struct ib_device *dev = container_of(device, struct ib_device, dev); 1244 1245 return sprintf(buf, "%.64s\n", dev->node_desc); 1246 } 1247 1248 static ssize_t set_node_desc(struct device *device, 1249 struct device_attribute *attr, 1250 const char *buf, size_t count) 1251 { 1252 struct ib_device *dev = container_of(device, struct ib_device, dev); 1253 struct ib_device_modify desc = {}; 1254 int ret; 1255 1256 if (!dev->modify_device) 1257 return -EIO; 1258 1259 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX)); 1260 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 1261 if (ret) 1262 return ret; 1263 1264 return count; 1265 } 1266 1267 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1268 char *buf) 1269 { 1270 struct ib_device *dev = container_of(device, struct ib_device, dev); 1271 1272 ib_get_device_fw_str(dev, buf, PAGE_SIZE); 1273 strlcat(buf, "\n", PAGE_SIZE); 1274 return strlen(buf); 1275 } 1276 1277 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 1278 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 1279 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 1280 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 1281 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1282 1283 static struct device_attribute *ib_class_attributes[] = { 1284 &dev_attr_node_type, 1285 &dev_attr_sys_image_guid, 1286 &dev_attr_node_guid, 1287 &dev_attr_node_desc, 1288 &dev_attr_fw_ver, 1289 }; 1290 1291 static void free_port_list_attributes(struct ib_device *device) 1292 { 1293 struct kobject *p, *t; 1294 1295 list_for_each_entry_safe(p, t, &device->port_list, entry) { 1296 struct ib_port *port = container_of(p, struct ib_port, kobj); 1297 list_del(&p->entry); 1298 if (port->hw_stats) { 1299 kfree(port->hw_stats); 1300 free_hsag(&port->kobj, port->hw_stats_ag); 1301 } 1302 1303 if (port->pma_table) 1304 sysfs_remove_group(p, port->pma_table); 1305 sysfs_remove_group(p, &port->pkey_group); 1306 sysfs_remove_group(p, &port->gid_group); 1307 sysfs_remove_group(&port->gid_attr_group->kobj, 1308 &port->gid_attr_group->ndev); 1309 sysfs_remove_group(&port->gid_attr_group->kobj, 1310 &port->gid_attr_group->type); 1311 kobject_put(&port->gid_attr_group->kobj); 1312 kobject_put(p); 1313 } 1314 1315 kobject_put(device->ports_parent); 1316 } 1317 1318 int ib_device_register_sysfs(struct ib_device *device, 1319 int (*port_callback)(struct ib_device *, 1320 u8, struct kobject *)) 1321 { 1322 struct device *class_dev = &device->dev; 1323 int ret; 1324 int i; 1325 1326 device->dev.parent = device->dma_device; 1327 ret = dev_set_name(class_dev, "%s", device->name); 1328 if (ret) 1329 return ret; 1330 1331 ret = device_add(class_dev); 1332 if (ret) 1333 goto err; 1334 1335 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 1336 ret = device_create_file(class_dev, ib_class_attributes[i]); 1337 if (ret) 1338 goto err_unregister; 1339 } 1340 1341 device->ports_parent = kobject_create_and_add("ports", 1342 &class_dev->kobj); 1343 if (!device->ports_parent) { 1344 ret = -ENOMEM; 1345 goto err_put; 1346 } 1347 1348 if (rdma_cap_ib_switch(device)) { 1349 ret = add_port(device, 0, port_callback); 1350 if (ret) 1351 goto err_put; 1352 } else { 1353 for (i = 1; i <= device->phys_port_cnt; ++i) { 1354 ret = add_port(device, i, port_callback); 1355 if (ret) 1356 goto err_put; 1357 } 1358 } 1359 1360 if (device->alloc_hw_stats) 1361 setup_hw_stats(device, NULL, 0); 1362 1363 return 0; 1364 1365 err_put: 1366 free_port_list_attributes(device); 1367 1368 err_unregister: 1369 device_del(class_dev); 1370 1371 err: 1372 return ret; 1373 } 1374 1375 void ib_device_unregister_sysfs(struct ib_device *device) 1376 { 1377 int i; 1378 1379 /* Hold kobject until ib_dealloc_device() */ 1380 kobject_get(&device->dev.kobj); 1381 1382 free_port_list_attributes(device); 1383 1384 if (device->hw_stats) { 1385 kfree(device->hw_stats); 1386 free_hsag(&device->dev.kobj, device->hw_stats_ag); 1387 } 1388 1389 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) 1390 device_remove_file(&device->dev, ib_class_attributes[i]); 1391 1392 device_unregister(&device->dev); 1393 } 1394 1395 /** 1396 * ib_port_register_module_stat - add module counters under relevant port 1397 * of IB device. 1398 * 1399 * @device: IB device to add counters 1400 * @port_num: valid port number 1401 * @kobj: pointer to the kobject to initialize 1402 * @ktype: pointer to the ktype for this kobject. 1403 * @name: the name of the kobject 1404 */ 1405 int ib_port_register_module_stat(struct ib_device *device, u8 port_num, 1406 struct kobject *kobj, struct kobj_type *ktype, 1407 const char *name) 1408 { 1409 struct kobject *p, *t; 1410 int ret; 1411 1412 list_for_each_entry_safe(p, t, &device->port_list, entry) { 1413 struct ib_port *port = container_of(p, struct ib_port, kobj); 1414 1415 if (port->port_num != port_num) 1416 continue; 1417 1418 ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s", 1419 name); 1420 if (ret) { 1421 kobject_put(kobj); 1422 return ret; 1423 } 1424 } 1425 1426 return 0; 1427 } 1428 EXPORT_SYMBOL(ib_port_register_module_stat); 1429 1430 /** 1431 * ib_port_unregister_module_stat - release module counters 1432 * @kobj: pointer to the kobject to release 1433 */ 1434 void ib_port_unregister_module_stat(struct kobject *kobj) 1435 { 1436 kobject_put(kobj); 1437 } 1438 EXPORT_SYMBOL(ib_port_unregister_module_stat);
Cache object: 340839697c3df377d7aea17b49f7660a
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