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