1 /* 2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved. 4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35 #include "core_priv.h" 36 37 #include <linux/slab.h> 38 #include <linux/stat.h> 39 #include <linux/string.h> 40 #include <linux/netdevice.h> 41 #include <linux/ethtool.h> 42 43 #include <rdma/ib_mad.h> 44 #include <rdma/ib_pma.h> 45 46 struct ib_port; 47 48 struct gid_attr_group { 49 struct ib_port *port; 50 struct kobject kobj; 51 struct attribute_group ndev; 52 struct attribute_group type; 53 }; 54 struct ib_port { 55 struct kobject kobj; 56 struct ib_device *ibdev; 57 struct gid_attr_group *gid_attr_group; 58 struct attribute_group gid_group; 59 struct attribute_group pkey_group; 60 struct attribute_group *pma_table; 61 struct attribute_group *hw_stats_ag; 62 struct rdma_hw_stats *hw_stats; 63 u8 port_num; 64 }; 65 66 struct port_attribute { 67 struct attribute attr; 68 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); 69 ssize_t (*store)(struct ib_port *, struct port_attribute *, 70 const char *buf, size_t count); 71 }; 72 73 #define PORT_ATTR(_name, _mode, _show, _store) \ 74 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 75 76 #define PORT_ATTR_RO(_name) \ 77 struct port_attribute port_attr_##_name = __ATTR_RO(_name) 78 79 struct port_table_attribute { 80 struct port_attribute attr; 81 char name[8]; 82 int index; 83 __be16 attr_id; 84 }; 85 86 struct hw_stats_attribute { 87 struct attribute attr; 88 ssize_t (*show)(struct kobject *kobj, 89 struct attribute *attr, char *buf); 90 ssize_t (*store)(struct kobject *kobj, 91 struct attribute *attr, 92 const char *buf, 93 size_t count); 94 int index; 95 u8 port_num; 96 }; 97 98 static ssize_t port_attr_show(struct kobject *kobj, 99 struct attribute *attr, char *buf) 100 { 101 struct port_attribute *port_attr = 102 container_of(attr, struct port_attribute, attr); 103 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 104 105 if (!port_attr->show) 106 return -EIO; 107 108 return port_attr->show(p, port_attr, buf); 109 } 110 111 static ssize_t port_attr_store(struct kobject *kobj, 112 struct attribute *attr, 113 const char *buf, size_t count) 114 { 115 struct port_attribute *port_attr = 116 container_of(attr, struct port_attribute, attr); 117 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 118 119 if (!port_attr->store) 120 return -EIO; 121 return port_attr->store(p, port_attr, buf, count); 122 } 123 124 static const struct sysfs_ops port_sysfs_ops = { 125 .show = port_attr_show, 126 .store = port_attr_store 127 }; 128 129 static ssize_t gid_attr_show(struct kobject *kobj, 130 struct attribute *attr, char *buf) 131 { 132 struct port_attribute *port_attr = 133 container_of(attr, struct port_attribute, attr); 134 struct ib_port *p = container_of(kobj, struct gid_attr_group, 135 kobj)->port; 136 137 if (!port_attr->show) 138 return -EIO; 139 140 return port_attr->show(p, port_attr, buf); 141 } 142 143 static const struct sysfs_ops gid_attr_sysfs_ops = { 144 .show = gid_attr_show 145 }; 146 147 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, 148 char *buf) 149 { 150 struct ib_port_attr attr; 151 ssize_t ret; 152 153 static const char *state_name[] = { 154 [IB_PORT_NOP] = "NOP", 155 [IB_PORT_DOWN] = "DOWN", 156 [IB_PORT_INIT] = "INIT", 157 [IB_PORT_ARMED] = "ARMED", 158 [IB_PORT_ACTIVE] = "ACTIVE", 159 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 160 }; 161 162 ret = ib_query_port(p->ibdev, p->port_num, &attr); 163 if (ret) 164 return ret; 165 166 return sprintf(buf, "%d: %s\n", attr.state, 167 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 168 state_name[attr.state] : "UNKNOWN"); 169 } 170 171 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 172 char *buf) 173 { 174 struct ib_port_attr attr; 175 ssize_t ret; 176 177 ret = ib_query_port(p->ibdev, p->port_num, &attr); 178 if (ret) 179 return ret; 180 181 return sprintf(buf, "0x%x\n", attr.lid); 182 } 183 184 static ssize_t lid_mask_count_show(struct ib_port *p, 185 struct port_attribute *unused, 186 char *buf) 187 { 188 struct ib_port_attr attr; 189 ssize_t ret; 190 191 ret = ib_query_port(p->ibdev, p->port_num, &attr); 192 if (ret) 193 return ret; 194 195 return sprintf(buf, "%d\n", attr.lmc); 196 } 197 198 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, 199 char *buf) 200 { 201 struct ib_port_attr attr; 202 ssize_t ret; 203 204 ret = ib_query_port(p->ibdev, p->port_num, &attr); 205 if (ret) 206 return ret; 207 208 return sprintf(buf, "0x%x\n", attr.sm_lid); 209 } 210 211 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, 212 char *buf) 213 { 214 struct ib_port_attr attr; 215 ssize_t ret; 216 217 ret = ib_query_port(p->ibdev, p->port_num, &attr); 218 if (ret) 219 return ret; 220 221 return sprintf(buf, "%d\n", attr.sm_sl); 222 } 223 224 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 225 char *buf) 226 { 227 struct ib_port_attr attr; 228 ssize_t ret; 229 230 ret = ib_query_port(p->ibdev, p->port_num, &attr); 231 if (ret) 232 return ret; 233 234 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 235 } 236 237 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 238 char *buf) 239 { 240 struct ib_port_attr attr; 241 char *speed = ""; 242 int rate; /* in deci-Gb/sec */ 243 ssize_t ret; 244 245 ret = ib_query_port(p->ibdev, p->port_num, &attr); 246 if (ret) 247 return ret; 248 249 switch (attr.active_speed) { 250 case IB_SPEED_DDR: 251 speed = " DDR"; 252 rate = 50; 253 break; 254 case IB_SPEED_QDR: 255 speed = " QDR"; 256 rate = 100; 257 break; 258 case IB_SPEED_FDR10: 259 speed = " FDR10"; 260 rate = 100; 261 break; 262 case IB_SPEED_FDR: 263 speed = " FDR"; 264 rate = 140; 265 break; 266 case IB_SPEED_EDR: 267 speed = " EDR"; 268 rate = 250; 269 break; 270 case IB_SPEED_HDR: 271 speed = " HDR"; 272 rate = 500; 273 break; 274 case IB_SPEED_SDR: 275 default: /* default to SDR for invalid rates */ 276 rate = 25; 277 break; 278 } 279 280 rate *= ib_width_enum_to_int(attr.active_width); 281 if (rate < 0) 282 return -EINVAL; 283 284 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 285 rate / 10, rate % 10 ? ".5" : "", 286 ib_width_enum_to_int(attr.active_width), speed); 287 } 288 289 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 290 char *buf) 291 { 292 struct ib_port_attr attr; 293 294 ssize_t ret; 295 296 ret = ib_query_port(p->ibdev, p->port_num, &attr); 297 if (ret) 298 return ret; 299 300 switch (attr.phys_state) { 301 case 1: return sprintf(buf, "1: Sleep\n"); 302 case 2: return sprintf(buf, "2: Polling\n"); 303 case 3: return sprintf(buf, "3: Disabled\n"); 304 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 305 case 5: return sprintf(buf, "5: LinkUp\n"); 306 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 307 case 7: return sprintf(buf, "7: Phy Test\n"); 308 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 309 } 310 } 311 312 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 313 char *buf) 314 { 315 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 316 case IB_LINK_LAYER_INFINIBAND: 317 return sprintf(buf, "%s\n", "InfiniBand"); 318 case IB_LINK_LAYER_ETHERNET: 319 return sprintf(buf, "%s\n", "Ethernet"); 320 default: 321 return sprintf(buf, "%s\n", "Unknown"); 322 } 323 } 324 325 static PORT_ATTR_RO(state); 326 static PORT_ATTR_RO(lid); 327 static PORT_ATTR_RO(lid_mask_count); 328 static PORT_ATTR_RO(sm_lid); 329 static PORT_ATTR_RO(sm_sl); 330 static PORT_ATTR_RO(cap_mask); 331 static PORT_ATTR_RO(rate); 332 static PORT_ATTR_RO(phys_state); 333 static PORT_ATTR_RO(link_layer); 334 335 static struct attribute *port_default_attrs[] = { 336 &port_attr_state.attr, 337 &port_attr_lid.attr, 338 &port_attr_lid_mask_count.attr, 339 &port_attr_sm_lid.attr, 340 &port_attr_sm_sl.attr, 341 &port_attr_cap_mask.attr, 342 &port_attr_rate.attr, 343 &port_attr_phys_state.attr, 344 &port_attr_link_layer.attr, 345 NULL 346 }; 347 348 static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf) 349 { 350 if (!gid_attr->ndev) 351 return -EINVAL; 352 353 return sprintf(buf, "%s\n", gid_attr->ndev->name); 354 } 355 356 static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf) 357 { 358 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type)); 359 } 360 361 static ssize_t _show_port_gid_attr(struct ib_port *p, 362 struct port_attribute *attr, 363 char *buf, 364 size_t (*print)(struct ib_gid_attr *gid_attr, 365 char *buf)) 366 { 367 struct port_table_attribute *tab_attr = 368 container_of(attr, struct port_table_attribute, attr); 369 union ib_gid gid; 370 struct ib_gid_attr gid_attr = {}; 371 ssize_t ret; 372 373 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, 374 &gid_attr); 375 if (ret) 376 goto err; 377 378 ret = print(&gid_attr, buf); 379 380 err: 381 if (gid_attr.ndev) 382 dev_put(gid_attr.ndev); 383 return ret; 384 } 385 386 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 387 char *buf) 388 { 389 struct port_table_attribute *tab_attr = 390 container_of(attr, struct port_table_attribute, attr); 391 union ib_gid gid; 392 ssize_t ret; 393 394 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL); 395 if (ret) 396 return ret; 397 398 return sprintf(buf, "%pI6\n", gid.raw); 399 } 400 401 static ssize_t show_port_gid_attr_ndev(struct ib_port *p, 402 struct port_attribute *attr, char *buf) 403 { 404 return _show_port_gid_attr(p, attr, buf, print_ndev); 405 } 406 407 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p, 408 struct port_attribute *attr, 409 char *buf) 410 { 411 return _show_port_gid_attr(p, attr, buf, print_gid_type); 412 } 413 414 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 415 char *buf) 416 { 417 struct port_table_attribute *tab_attr = 418 container_of(attr, struct port_table_attribute, attr); 419 u16 pkey; 420 ssize_t ret; 421 422 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 423 if (ret) 424 return ret; 425 426 return sprintf(buf, "0x%04x\n", pkey); 427 } 428 429 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 430 struct port_table_attribute port_pma_attr_##_name = { \ 431 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 432 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \ 433 .attr_id = IB_PMA_PORT_COUNTERS , \ 434 } 435 436 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \ 437 struct port_table_attribute port_pma_attr_ext_##_name = { \ 438 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 439 .index = (_offset) | ((_width) << 16), \ 440 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \ 441 } 442 443 /* 444 * Get a Perfmgmt MAD block of data. 445 * Returns error code or the number of bytes retrieved. 446 */ 447 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr, 448 void *data, int offset, size_t size) 449 { 450 struct ib_mad *in_mad; 451 struct ib_mad *out_mad; 452 size_t mad_size = sizeof(*out_mad); 453 u16 out_mad_pkey_index = 0; 454 ssize_t ret; 455 456 if (!dev->process_mad) 457 return -ENOSYS; 458 459 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 460 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 461 if (!in_mad || !out_mad) { 462 ret = -ENOMEM; 463 goto out; 464 } 465 466 in_mad->mad_hdr.base_version = 1; 467 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 468 in_mad->mad_hdr.class_version = 1; 469 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 470 in_mad->mad_hdr.attr_id = attr; 471 472 if (attr != IB_PMA_CLASS_PORT_INFO) 473 in_mad->data[41] = port_num; /* PortSelect field */ 474 475 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY, 476 port_num, NULL, NULL, 477 (const struct ib_mad_hdr *)in_mad, mad_size, 478 (struct ib_mad_hdr *)out_mad, &mad_size, 479 &out_mad_pkey_index) & 480 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 481 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 482 ret = -EINVAL; 483 goto out; 484 } 485 memcpy(data, out_mad->data + offset, size); 486 ret = size; 487 out: 488 kfree(in_mad); 489 kfree(out_mad); 490 return ret; 491 } 492 493 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 494 char *buf) 495 { 496 struct port_table_attribute *tab_attr = 497 container_of(attr, struct port_table_attribute, attr); 498 int offset = tab_attr->index & 0xffff; 499 int width = (tab_attr->index >> 16) & 0xff; 500 ssize_t ret; 501 u8 data[8]; 502 503 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data, 504 40 + offset / 8, sizeof(data)); 505 if (ret < 0) 506 return sprintf(buf, "N/A (no PMA)\n"); 507 508 switch (width) { 509 case 4: 510 ret = sprintf(buf, "%u\n", (*data >> 511 (4 - (offset % 8))) & 0xf); 512 break; 513 case 8: 514 ret = sprintf(buf, "%u\n", *data); 515 break; 516 case 16: 517 ret = sprintf(buf, "%u\n", 518 be16_to_cpup((__be16 *)data)); 519 break; 520 case 32: 521 ret = sprintf(buf, "%u\n", 522 be32_to_cpup((__be32 *)data)); 523 break; 524 case 64: 525 ret = sprintf(buf, "%llu\n", 526 be64_to_cpup((__be64 *)data)); 527 break; 528 529 default: 530 ret = 0; 531 } 532 533 return ret; 534 } 535 536 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 537 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 538 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 539 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 540 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 541 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 542 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 543 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 544 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 545 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 546 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 547 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 548 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 549 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 550 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 551 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 552 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320); 553 554 /* 555 * Counters added by extended set 556 */ 557 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64); 558 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128); 559 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192); 560 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256); 561 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320); 562 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384); 563 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448); 564 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512); 565 566 static struct attribute *pma_attrs[] = { 567 &port_pma_attr_symbol_error.attr.attr, 568 &port_pma_attr_link_error_recovery.attr.attr, 569 &port_pma_attr_link_downed.attr.attr, 570 &port_pma_attr_port_rcv_errors.attr.attr, 571 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 572 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 573 &port_pma_attr_port_xmit_discards.attr.attr, 574 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 575 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 576 &port_pma_attr_local_link_integrity_errors.attr.attr, 577 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 578 &port_pma_attr_VL15_dropped.attr.attr, 579 &port_pma_attr_port_xmit_data.attr.attr, 580 &port_pma_attr_port_rcv_data.attr.attr, 581 &port_pma_attr_port_xmit_packets.attr.attr, 582 &port_pma_attr_port_rcv_packets.attr.attr, 583 &port_pma_attr_port_xmit_wait.attr.attr, 584 NULL 585 }; 586 587 static struct attribute *pma_attrs_ext[] = { 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_ext_port_xmit_data.attr.attr, 601 &port_pma_attr_ext_port_rcv_data.attr.attr, 602 &port_pma_attr_ext_port_xmit_packets.attr.attr, 603 &port_pma_attr_port_xmit_wait.attr.attr, 604 &port_pma_attr_ext_port_rcv_packets.attr.attr, 605 &port_pma_attr_ext_unicast_rcv_packets.attr.attr, 606 &port_pma_attr_ext_unicast_xmit_packets.attr.attr, 607 &port_pma_attr_ext_multicast_rcv_packets.attr.attr, 608 &port_pma_attr_ext_multicast_xmit_packets.attr.attr, 609 NULL 610 }; 611 612 static struct attribute *pma_attrs_noietf[] = { 613 &port_pma_attr_symbol_error.attr.attr, 614 &port_pma_attr_link_error_recovery.attr.attr, 615 &port_pma_attr_link_downed.attr.attr, 616 &port_pma_attr_port_rcv_errors.attr.attr, 617 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 618 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 619 &port_pma_attr_port_xmit_discards.attr.attr, 620 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 621 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 622 &port_pma_attr_local_link_integrity_errors.attr.attr, 623 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 624 &port_pma_attr_VL15_dropped.attr.attr, 625 &port_pma_attr_ext_port_xmit_data.attr.attr, 626 &port_pma_attr_ext_port_rcv_data.attr.attr, 627 &port_pma_attr_ext_port_xmit_packets.attr.attr, 628 &port_pma_attr_ext_port_rcv_packets.attr.attr, 629 &port_pma_attr_port_xmit_wait.attr.attr, 630 NULL 631 }; 632 633 static struct attribute_group pma_group = { 634 .name = "counters", 635 .attrs = pma_attrs 636 }; 637 638 static struct attribute_group pma_group_ext = { 639 .name = "counters", 640 .attrs = pma_attrs_ext 641 }; 642 643 static struct attribute_group pma_group_noietf = { 644 .name = "counters", 645 .attrs = pma_attrs_noietf 646 }; 647 648 static void ib_port_release(struct kobject *kobj) 649 { 650 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 651 struct attribute *a; 652 int i; 653 654 if (p->gid_group.attrs) { 655 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 656 kfree(a); 657 658 kfree(p->gid_group.attrs); 659 } 660 661 if (p->pkey_group.attrs) { 662 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 663 kfree(a); 664 665 kfree(p->pkey_group.attrs); 666 } 667 668 kfree(p); 669 } 670 671 static void ib_port_gid_attr_release(struct kobject *kobj) 672 { 673 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group, 674 kobj); 675 struct attribute *a; 676 int i; 677 678 if (g->ndev.attrs) { 679 for (i = 0; (a = g->ndev.attrs[i]); ++i) 680 kfree(a); 681 682 kfree(g->ndev.attrs); 683 } 684 685 if (g->type.attrs) { 686 for (i = 0; (a = g->type.attrs[i]); ++i) 687 kfree(a); 688 689 kfree(g->type.attrs); 690 } 691 692 kfree(g); 693 } 694 695 static struct kobj_type port_type = { 696 .release = ib_port_release, 697 .sysfs_ops = &port_sysfs_ops, 698 .default_attrs = port_default_attrs 699 }; 700 701 static struct kobj_type gid_attr_type = { 702 .sysfs_ops = &gid_attr_sysfs_ops, 703 .release = ib_port_gid_attr_release 704 }; 705 706 static struct attribute ** 707 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 708 struct port_attribute *, char *buf), 709 int len) 710 { 711 struct attribute **tab_attr; 712 struct port_table_attribute *element; 713 int i; 714 715 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 716 if (!tab_attr) 717 return NULL; 718 719 for (i = 0; i < len; i++) { 720 element = kzalloc(sizeof(struct port_table_attribute), 721 GFP_KERNEL); 722 if (!element) 723 goto err; 724 725 if (snprintf(element->name, sizeof(element->name), 726 "%d", i) >= sizeof(element->name)) { 727 kfree(element); 728 goto err; 729 } 730 731 element->attr.attr.name = element->name; 732 element->attr.attr.mode = S_IRUGO; 733 element->attr.show = show; 734 element->index = i; 735 sysfs_attr_init(&element->attr.attr); 736 737 tab_attr[i] = &element->attr.attr; 738 } 739 740 return tab_attr; 741 742 err: 743 while (--i >= 0) 744 kfree(tab_attr[i]); 745 kfree(tab_attr); 746 return NULL; 747 } 748 749 /* 750 * Figure out which counter table to use depending on 751 * the device capabilities. 752 */ 753 static struct attribute_group *get_counter_table(struct ib_device *dev, 754 int port_num) 755 { 756 struct ib_class_port_info cpi; 757 758 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO, 759 &cpi, 40, sizeof(cpi)) >= 0) { 760 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH) 761 /* We have extended counters */ 762 return &pma_group_ext; 763 764 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) 765 /* But not the IETF ones */ 766 return &pma_group_noietf; 767 } 768 769 /* Fall back to normal counters */ 770 return &pma_group; 771 } 772 773 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats, 774 u8 port_num, int index) 775 { 776 int ret; 777 778 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan)) 779 return 0; 780 ret = dev->get_hw_stats(dev, stats, port_num, index); 781 if (ret < 0) 782 return ret; 783 if (ret == stats->num_counters) 784 stats->timestamp = jiffies; 785 786 return 0; 787 } 788 789 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf) 790 { 791 return sprintf(buf, "%llu\n", stats->value[index]); 792 } 793 794 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr, 795 char *buf) 796 { 797 struct ib_device *dev; 798 struct ib_port *port; 799 struct hw_stats_attribute *hsa; 800 struct rdma_hw_stats *stats; 801 int ret; 802 803 hsa = container_of(attr, struct hw_stats_attribute, attr); 804 if (!hsa->port_num) { 805 dev = container_of((struct device *)kobj, 806 struct ib_device, dev); 807 stats = dev->hw_stats; 808 } else { 809 port = container_of(kobj, struct ib_port, kobj); 810 dev = port->ibdev; 811 stats = port->hw_stats; 812 } 813 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index); 814 if (ret) 815 return ret; 816 return print_hw_stat(stats, hsa->index, buf); 817 } 818 819 static ssize_t show_stats_lifespan(struct kobject *kobj, 820 struct attribute *attr, 821 char *buf) 822 { 823 struct hw_stats_attribute *hsa; 824 int msecs; 825 826 hsa = container_of(attr, struct hw_stats_attribute, attr); 827 if (!hsa->port_num) { 828 struct ib_device *dev = container_of((struct device *)kobj, 829 struct ib_device, dev); 830 msecs = jiffies_to_msecs(dev->hw_stats->lifespan); 831 } else { 832 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 833 msecs = jiffies_to_msecs(p->hw_stats->lifespan); 834 } 835 return sprintf(buf, "%d\n", msecs); 836 } 837 838 static ssize_t set_stats_lifespan(struct kobject *kobj, 839 struct attribute *attr, 840 const char *buf, size_t count) 841 { 842 struct hw_stats_attribute *hsa; 843 int msecs; 844 int jiffies; 845 int ret; 846 847 ret = kstrtoint(buf, 10, &msecs); 848 if (ret) 849 return ret; 850 if (msecs < 0 || msecs > 10000) 851 return -EINVAL; 852 jiffies = msecs_to_jiffies(msecs); 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 dev->hw_stats->lifespan = jiffies; 858 } else { 859 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 860 p->hw_stats->lifespan = jiffies; 861 } 862 return count; 863 } 864 865 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group) 866 { 867 struct attribute **attr; 868 869 sysfs_remove_group(kobj, attr_group); 870 871 for (attr = attr_group->attrs; *attr; attr++) 872 kfree(*attr); 873 kfree(attr_group); 874 } 875 876 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name) 877 { 878 struct hw_stats_attribute *hsa; 879 880 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 881 if (!hsa) 882 return NULL; 883 884 hsa->attr.name = (char *)name; 885 hsa->attr.mode = S_IRUGO; 886 hsa->show = show_hw_stats; 887 hsa->store = NULL; 888 hsa->index = index; 889 hsa->port_num = port_num; 890 891 return &hsa->attr; 892 } 893 894 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num) 895 { 896 struct hw_stats_attribute *hsa; 897 898 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 899 if (!hsa) 900 return NULL; 901 902 hsa->attr.name = name; 903 hsa->attr.mode = S_IWUSR | S_IRUGO; 904 hsa->show = show_stats_lifespan; 905 hsa->store = set_stats_lifespan; 906 hsa->index = 0; 907 hsa->port_num = port_num; 908 909 return &hsa->attr; 910 } 911 912 static void setup_hw_stats(struct ib_device *device, struct ib_port *port, 913 u8 port_num) 914 { 915 struct attribute_group *hsag; 916 struct rdma_hw_stats *stats; 917 int i, ret; 918 919 stats = device->alloc_hw_stats(device, port_num); 920 921 if (!stats) 922 return; 923 924 if (!stats->names || stats->num_counters <= 0) 925 goto err_free_stats; 926 927 /* 928 * Two extra attribue elements here, one for the lifespan entry and 929 * one to NULL terminate the list for the sysfs core code 930 */ 931 hsag = kzalloc(sizeof(*hsag) + 932 sizeof(void *) * (stats->num_counters + 2), 933 GFP_KERNEL); 934 if (!hsag) 935 goto err_free_stats; 936 937 ret = device->get_hw_stats(device, stats, port_num, 938 stats->num_counters); 939 if (ret != stats->num_counters) 940 goto err_free_hsag; 941 942 stats->timestamp = jiffies; 943 944 hsag->name = "hw_counters"; 945 hsag->attrs = (void *)hsag + sizeof(*hsag); 946 947 for (i = 0; i < stats->num_counters; i++) { 948 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]); 949 if (!hsag->attrs[i]) 950 goto err; 951 sysfs_attr_init(hsag->attrs[i]); 952 } 953 954 /* treat an error here as non-fatal */ 955 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num); 956 if (hsag->attrs[i]) 957 sysfs_attr_init(hsag->attrs[i]); 958 959 if (port) { 960 struct kobject *kobj = &port->kobj; 961 ret = sysfs_create_group(kobj, hsag); 962 if (ret) 963 goto err; 964 port->hw_stats_ag = hsag; 965 port->hw_stats = stats; 966 } else { 967 struct kobject *kobj = &device->dev.kobj; 968 ret = sysfs_create_group(kobj, hsag); 969 if (ret) 970 goto err; 971 device->hw_stats_ag = hsag; 972 device->hw_stats = stats; 973 } 974 975 return; 976 977 err: 978 for (; i >= 0; i--) 979 kfree(hsag->attrs[i]); 980 err_free_hsag: 981 kfree(hsag); 982 err_free_stats: 983 kfree(stats); 984 return; 985 } 986 987 static int add_port(struct ib_device *device, int port_num, 988 int (*port_callback)(struct ib_device *, 989 u8, struct kobject *)) 990 { 991 struct ib_port *p; 992 struct ib_port_attr attr; 993 int i; 994 int ret; 995 996 ret = ib_query_port(device, port_num, &attr); 997 if (ret) 998 return ret; 999 1000 p = kzalloc(sizeof *p, GFP_KERNEL); 1001 if (!p) 1002 return -ENOMEM; 1003 1004 p->ibdev = device; 1005 p->port_num = port_num; 1006 1007 ret = kobject_init_and_add(&p->kobj, &port_type, 1008 device->ports_parent, 1009 "%d", port_num); 1010 if (ret) { 1011 kfree(p); 1012 return ret; 1013 } 1014 1015 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL); 1016 if (!p->gid_attr_group) { 1017 ret = -ENOMEM; 1018 goto err_put; 1019 } 1020 1021 p->gid_attr_group->port = p; 1022 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type, 1023 &p->kobj, "gid_attrs"); 1024 if (ret) { 1025 kfree(p->gid_attr_group); 1026 goto err_put; 1027 } 1028 1029 p->pma_table = get_counter_table(device, port_num); 1030 ret = sysfs_create_group(&p->kobj, p->pma_table); 1031 if (ret) 1032 goto err_put_gid_attrs; 1033 1034 p->gid_group.name = "gids"; 1035 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 1036 if (!p->gid_group.attrs) { 1037 ret = -ENOMEM; 1038 goto err_remove_pma; 1039 } 1040 1041 ret = sysfs_create_group(&p->kobj, &p->gid_group); 1042 if (ret) 1043 goto err_free_gid; 1044 1045 p->gid_attr_group->ndev.name = "ndevs"; 1046 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev, 1047 attr.gid_tbl_len); 1048 if (!p->gid_attr_group->ndev.attrs) { 1049 ret = -ENOMEM; 1050 goto err_remove_gid; 1051 } 1052 1053 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1054 &p->gid_attr_group->ndev); 1055 if (ret) 1056 goto err_free_gid_ndev; 1057 1058 p->gid_attr_group->type.name = "types"; 1059 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type, 1060 attr.gid_tbl_len); 1061 if (!p->gid_attr_group->type.attrs) { 1062 ret = -ENOMEM; 1063 goto err_remove_gid_ndev; 1064 } 1065 1066 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1067 &p->gid_attr_group->type); 1068 if (ret) 1069 goto err_free_gid_type; 1070 1071 p->pkey_group.name = "pkeys"; 1072 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 1073 attr.pkey_tbl_len); 1074 if (!p->pkey_group.attrs) { 1075 ret = -ENOMEM; 1076 goto err_remove_gid_type; 1077 } 1078 1079 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 1080 if (ret) 1081 goto err_free_pkey; 1082 1083 if (port_callback) { 1084 ret = port_callback(device, port_num, &p->kobj); 1085 if (ret) 1086 goto err_remove_pkey; 1087 } 1088 1089 /* 1090 * If port == 0, it means we have only one port and the parent 1091 * device, not this port device, should be the holder of the 1092 * hw_counters 1093 */ 1094 if (device->alloc_hw_stats && port_num) 1095 setup_hw_stats(device, p, port_num); 1096 1097 list_add_tail(&p->kobj.entry, &device->port_list); 1098 1099 kobject_uevent(&p->kobj, KOBJ_ADD); 1100 return 0; 1101 1102 err_remove_pkey: 1103 sysfs_remove_group(&p->kobj, &p->pkey_group); 1104 1105 err_free_pkey: 1106 for (i = 0; i < attr.pkey_tbl_len; ++i) 1107 kfree(p->pkey_group.attrs[i]); 1108 1109 kfree(p->pkey_group.attrs); 1110 p->pkey_group.attrs = NULL; 1111 1112 err_remove_gid_type: 1113 sysfs_remove_group(&p->gid_attr_group->kobj, 1114 &p->gid_attr_group->type); 1115 1116 err_free_gid_type: 1117 for (i = 0; i < attr.gid_tbl_len; ++i) 1118 kfree(p->gid_attr_group->type.attrs[i]); 1119 1120 kfree(p->gid_attr_group->type.attrs); 1121 p->gid_attr_group->type.attrs = NULL; 1122 1123 err_remove_gid_ndev: 1124 sysfs_remove_group(&p->gid_attr_group->kobj, 1125 &p->gid_attr_group->ndev); 1126 1127 err_free_gid_ndev: 1128 for (i = 0; i < attr.gid_tbl_len; ++i) 1129 kfree(p->gid_attr_group->ndev.attrs[i]); 1130 1131 kfree(p->gid_attr_group->ndev.attrs); 1132 p->gid_attr_group->ndev.attrs = NULL; 1133 1134 err_remove_gid: 1135 sysfs_remove_group(&p->kobj, &p->gid_group); 1136 1137 err_free_gid: 1138 for (i = 0; i < attr.gid_tbl_len; ++i) 1139 kfree(p->gid_group.attrs[i]); 1140 1141 kfree(p->gid_group.attrs); 1142 p->gid_group.attrs = NULL; 1143 1144 err_remove_pma: 1145 sysfs_remove_group(&p->kobj, p->pma_table); 1146 1147 err_put_gid_attrs: 1148 kobject_put(&p->gid_attr_group->kobj); 1149 1150 err_put: 1151 kobject_put(&p->kobj); 1152 return ret; 1153 } 1154 1155 static ssize_t show_node_type(struct device *device, 1156 struct device_attribute *attr, char *buf) 1157 { 1158 struct ib_device *dev = container_of(device, struct ib_device, dev); 1159 1160 switch (dev->node_type) { 1161 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 1162 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 1163 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); 1164 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); 1165 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 1166 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 1167 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 1168 } 1169 } 1170 1171 static ssize_t show_sys_image_guid(struct device *device, 1172 struct device_attribute *dev_attr, char *buf) 1173 { 1174 struct ib_device *dev = container_of(device, struct ib_device, dev); 1175 1176 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1177 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]), 1178 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]), 1179 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]), 1180 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3])); 1181 } 1182 1183 static ssize_t show_node_guid(struct device *device, 1184 struct device_attribute *attr, char *buf) 1185 { 1186 struct ib_device *dev = container_of(device, struct ib_device, dev); 1187 1188 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1189 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 1190 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 1191 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 1192 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 1193 } 1194 1195 static ssize_t show_node_desc(struct device *device, 1196 struct device_attribute *attr, char *buf) 1197 { 1198 struct ib_device *dev = container_of(device, struct ib_device, dev); 1199 1200 return sprintf(buf, "%.64s\n", dev->node_desc); 1201 } 1202 1203 static ssize_t set_node_desc(struct device *device, 1204 struct device_attribute *attr, 1205 const char *buf, size_t count) 1206 { 1207 struct ib_device *dev = container_of(device, struct ib_device, dev); 1208 struct ib_device_modify desc = {}; 1209 int ret; 1210 1211 if (!dev->modify_device) 1212 return -EIO; 1213 1214 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX)); 1215 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 1216 if (ret) 1217 return ret; 1218 1219 return count; 1220 } 1221 1222 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1223 char *buf) 1224 { 1225 struct ib_device *dev = container_of(device, struct ib_device, dev); 1226 1227 ib_get_device_fw_str(dev, buf); 1228 strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX); 1229 return strlen(buf); 1230 } 1231 1232 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 1233 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 1234 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 1235 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 1236 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1237 1238 static struct device_attribute *ib_class_attributes[] = { 1239 &dev_attr_node_type, 1240 &dev_attr_sys_image_guid, 1241 &dev_attr_node_guid, 1242 &dev_attr_node_desc, 1243 &dev_attr_fw_ver, 1244 }; 1245 1246 static void free_port_list_attributes(struct ib_device *device) 1247 { 1248 struct kobject *p, *t; 1249 1250 list_for_each_entry_safe(p, t, &device->port_list, entry) { 1251 struct ib_port *port = container_of(p, struct ib_port, kobj); 1252 list_del(&p->entry); 1253 if (port->hw_stats) { 1254 kfree(port->hw_stats); 1255 free_hsag(&port->kobj, port->hw_stats_ag); 1256 } 1257 sysfs_remove_group(p, port->pma_table); 1258 sysfs_remove_group(p, &port->pkey_group); 1259 sysfs_remove_group(p, &port->gid_group); 1260 sysfs_remove_group(&port->gid_attr_group->kobj, 1261 &port->gid_attr_group->ndev); 1262 sysfs_remove_group(&port->gid_attr_group->kobj, 1263 &port->gid_attr_group->type); 1264 kobject_put(&port->gid_attr_group->kobj); 1265 kobject_put(p); 1266 } 1267 1268 kobject_put(device->ports_parent); 1269 } 1270 1271 int ib_device_register_sysfs(struct ib_device *device, 1272 int (*port_callback)(struct ib_device *, 1273 u8, struct kobject *)) 1274 { 1275 struct device *class_dev = &device->dev; 1276 int ret; 1277 int i; 1278 1279 ret = dev_set_name(class_dev, "%s", device->name); 1280 if (ret) 1281 return ret; 1282 1283 ret = device_add(class_dev); 1284 if (ret) 1285 goto err; 1286 1287 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 1288 ret = device_create_file(class_dev, ib_class_attributes[i]); 1289 if (ret) 1290 goto err_unregister; 1291 } 1292 1293 device->ports_parent = kobject_create_and_add("ports", 1294 &class_dev->kobj); 1295 if (!device->ports_parent) { 1296 ret = -ENOMEM; 1297 goto err_put; 1298 } 1299 1300 if (rdma_cap_ib_switch(device)) { 1301 ret = add_port(device, 0, port_callback); 1302 if (ret) 1303 goto err_put; 1304 } else { 1305 for (i = 1; i <= device->phys_port_cnt; ++i) { 1306 ret = add_port(device, i, port_callback); 1307 if (ret) 1308 goto err_put; 1309 } 1310 } 1311 1312 if (device->alloc_hw_stats) 1313 setup_hw_stats(device, NULL, 0); 1314 1315 return 0; 1316 1317 err_put: 1318 free_port_list_attributes(device); 1319 1320 err_unregister: 1321 device_del(class_dev); 1322 1323 err: 1324 return ret; 1325 } 1326 1327 void ib_device_unregister_sysfs(struct ib_device *device) 1328 { 1329 int i; 1330 1331 /* Hold kobject until ib_dealloc_device() */ 1332 kobject_get(&device->dev.kobj); 1333 1334 free_port_list_attributes(device); 1335 1336 if (device->hw_stats) { 1337 kfree(device->hw_stats); 1338 free_hsag(&device->dev.kobj, device->hw_stats_ag); 1339 } 1340 1341 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) 1342 device_remove_file(&device->dev, ib_class_attributes[i]); 1343 1344 device_unregister(&device->dev); 1345 } 1346