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 #include "core_priv.h" 39 40 #include <linux/slab.h> 41 #include <linux/string.h> 42 #include <linux/netdevice.h> 43 #include <linux/fs.h> 44 #include <linux/printk.h> 45 46 #include <rdma/ib_addr.h> 47 #include <rdma/ib_mad.h> 48 #include <rdma/ib_pma.h> 49 #include <rdma/ib_cache.h> 50 51 struct ib_port; 52 53 struct gid_attr_group { 54 struct ib_port *port; 55 struct kobject kobj; 56 struct attribute_group ndev; 57 struct attribute_group type; 58 }; 59 struct ib_port { 60 struct kobject kobj; 61 struct ib_device *ibdev; 62 struct gid_attr_group *gid_attr_group; 63 struct attribute_group gid_group; 64 struct attribute_group pkey_group; 65 struct attribute_group *pma_table; 66 struct attribute_group *hw_stats_ag; 67 struct rdma_hw_stats *hw_stats; 68 u8 port_num; 69 }; 70 71 struct port_attribute { 72 struct attribute attr; 73 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); 74 ssize_t (*store)(struct ib_port *, struct port_attribute *, 75 const char *buf, size_t count); 76 }; 77 78 #define PORT_ATTR(_name, _mode, _show, _store) \ 79 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 80 81 #define PORT_ATTR_RO(_name) \ 82 struct port_attribute port_attr_##_name = __ATTR_RO(_name) 83 84 struct port_table_attribute { 85 struct port_attribute attr; 86 char name[8]; 87 int index; 88 __be16 attr_id; 89 }; 90 91 struct hw_stats_attribute { 92 struct attribute attr; 93 ssize_t (*show)(struct kobject *kobj, 94 struct attribute *attr, char *buf); 95 ssize_t (*store)(struct kobject *kobj, 96 struct attribute *attr, 97 const char *buf, 98 size_t count); 99 int index; 100 u8 port_num; 101 }; 102 103 static ssize_t port_attr_show(struct kobject *kobj, 104 struct attribute *attr, char *buf) 105 { 106 struct port_attribute *port_attr = 107 container_of(attr, struct port_attribute, attr); 108 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 109 110 if (!port_attr->show) 111 return -EIO; 112 113 return port_attr->show(p, port_attr, buf); 114 } 115 116 static ssize_t port_attr_store(struct kobject *kobj, 117 struct attribute *attr, 118 const char *buf, size_t count) 119 { 120 struct port_attribute *port_attr = 121 container_of(attr, struct port_attribute, attr); 122 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 123 124 if (!port_attr->store) 125 return -EIO; 126 return port_attr->store(p, port_attr, buf, count); 127 } 128 129 static const struct sysfs_ops port_sysfs_ops = { 130 .show = port_attr_show, 131 .store = port_attr_store 132 }; 133 134 static ssize_t gid_attr_show(struct kobject *kobj, 135 struct attribute *attr, char *buf) 136 { 137 struct port_attribute *port_attr = 138 container_of(attr, struct port_attribute, attr); 139 struct ib_port *p = container_of(kobj, struct gid_attr_group, 140 kobj)->port; 141 142 if (!port_attr->show) 143 return -EIO; 144 145 return port_attr->show(p, port_attr, buf); 146 } 147 148 static const struct sysfs_ops gid_attr_sysfs_ops = { 149 .show = gid_attr_show 150 }; 151 152 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, 153 char *buf) 154 { 155 struct ib_port_attr attr; 156 ssize_t ret; 157 158 static const char *state_name[] = { 159 [IB_PORT_NOP] = "NOP", 160 [IB_PORT_DOWN] = "DOWN", 161 [IB_PORT_INIT] = "INIT", 162 [IB_PORT_ARMED] = "ARMED", 163 [IB_PORT_ACTIVE] = "ACTIVE", 164 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 165 }; 166 167 ret = ib_query_port(p->ibdev, p->port_num, &attr); 168 if (ret) 169 return ret; 170 171 return sprintf(buf, "%d: %s\n", attr.state, 172 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 173 state_name[attr.state] : "UNKNOWN"); 174 } 175 176 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 177 char *buf) 178 { 179 struct ib_port_attr attr; 180 ssize_t ret; 181 182 ret = ib_query_port(p->ibdev, p->port_num, &attr); 183 if (ret) 184 return ret; 185 186 return sprintf(buf, "0x%x\n", attr.lid); 187 } 188 189 static ssize_t lid_mask_count_show(struct ib_port *p, 190 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, "%d\n", attr.lmc); 201 } 202 203 static ssize_t sm_lid_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, "0x%x\n", attr.sm_lid); 214 } 215 216 static ssize_t sm_sl_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, "%d\n", attr.sm_sl); 227 } 228 229 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 230 char *buf) 231 { 232 struct ib_port_attr attr; 233 ssize_t ret; 234 235 ret = ib_query_port(p->ibdev, p->port_num, &attr); 236 if (ret) 237 return ret; 238 239 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 240 } 241 242 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 243 char *buf) 244 { 245 struct ib_port_attr attr; 246 char *speed = ""; 247 int rate; /* in deci-Gb/sec */ 248 ssize_t ret; 249 250 ret = ib_query_port(p->ibdev, p->port_num, &attr); 251 if (ret) 252 return ret; 253 254 switch (attr.active_speed) { 255 case IB_SPEED_DDR: 256 speed = " DDR"; 257 rate = 50; 258 break; 259 case IB_SPEED_QDR: 260 speed = " QDR"; 261 rate = 100; 262 break; 263 case IB_SPEED_FDR10: 264 speed = " FDR10"; 265 rate = 100; 266 break; 267 case IB_SPEED_FDR: 268 speed = " FDR"; 269 rate = 140; 270 break; 271 case IB_SPEED_EDR: 272 speed = " EDR"; 273 rate = 250; 274 break; 275 case IB_SPEED_HDR: 276 speed = " HDR"; 277 rate = 500; 278 break; 279 case IB_SPEED_NDR: 280 speed = " NDR"; 281 rate = 1000; 282 break; 283 case IB_SPEED_XDR: 284 speed = " XDR"; 285 rate = 2000; 286 break; 287 case IB_SPEED_SDR: 288 default: /* default to SDR for invalid rates */ 289 speed = " SDR"; 290 rate = 25; 291 break; 292 } 293 294 rate *= ib_width_enum_to_int(attr.active_width); 295 if (rate < 0) 296 return -EINVAL; 297 298 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 299 rate / 10, rate % 10 ? ".5" : "", 300 ib_width_enum_to_int(attr.active_width), speed); 301 } 302 303 static const char *phys_state_to_str(enum ib_port_phys_state phys_state) 304 { 305 static const char * phys_state_str[] = { 306 "<unknown>", 307 "Sleep", 308 "Polling", 309 "Disabled", 310 "PortConfigurationTraining", 311 "LinkUp", 312 "LinkErrorRecovery", 313 "Phy Test", 314 }; 315 316 if (phys_state < ARRAY_SIZE(phys_state_str)) 317 return phys_state_str[phys_state]; 318 return "<unknown>"; 319 } 320 321 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 322 char *buf) 323 { 324 struct ib_port_attr attr; 325 326 ssize_t ret; 327 328 ret = ib_query_port(p->ibdev, p->port_num, &attr); 329 if (ret) 330 return ret; 331 332 return sprintf(buf, "%d: %s\n", attr.phys_state, 333 phys_state_to_str(attr.phys_state)); 334 } 335 336 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 337 char *buf) 338 { 339 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 340 case IB_LINK_LAYER_INFINIBAND: 341 return sprintf(buf, "%s\n", "InfiniBand"); 342 case IB_LINK_LAYER_ETHERNET: 343 return sprintf(buf, "%s\n", "Ethernet"); 344 default: 345 return sprintf(buf, "%s\n", "Unknown"); 346 } 347 } 348 349 static PORT_ATTR_RO(state); 350 static PORT_ATTR_RO(lid); 351 static PORT_ATTR_RO(lid_mask_count); 352 static PORT_ATTR_RO(sm_lid); 353 static PORT_ATTR_RO(sm_sl); 354 static PORT_ATTR_RO(cap_mask); 355 static PORT_ATTR_RO(rate); 356 static PORT_ATTR_RO(phys_state); 357 static PORT_ATTR_RO(link_layer); 358 359 static struct attribute *port_default_attrs[] = { 360 &port_attr_state.attr, 361 &port_attr_lid.attr, 362 &port_attr_lid_mask_count.attr, 363 &port_attr_sm_lid.attr, 364 &port_attr_sm_sl.attr, 365 &port_attr_cap_mask.attr, 366 &port_attr_rate.attr, 367 &port_attr_phys_state.attr, 368 &port_attr_link_layer.attr, 369 NULL 370 }; 371 372 static size_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf) 373 { 374 if (!gid_attr->ndev) 375 return -EINVAL; 376 377 return sprintf(buf, "%s\n", if_name(gid_attr->ndev)); 378 } 379 380 static size_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf) 381 { 382 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type)); 383 } 384 385 static ssize_t _show_port_gid_attr( 386 struct ib_port *p, struct port_attribute *attr, char *buf, 387 size_t (*print)(const struct ib_gid_attr *gid_attr, char *buf)) 388 { 389 struct port_table_attribute *tab_attr = 390 container_of(attr, struct port_table_attribute, attr); 391 const struct ib_gid_attr *gid_attr; 392 ssize_t ret; 393 394 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index); 395 if (IS_ERR(gid_attr)) 396 return PTR_ERR(gid_attr); 397 398 ret = print(gid_attr, buf); 399 rdma_put_gid_attr(gid_attr); 400 return ret; 401 } 402 403 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 404 char *buf) 405 { 406 struct port_table_attribute *tab_attr = 407 container_of(attr, struct port_table_attribute, attr); 408 const struct ib_gid_attr *gid_attr; 409 ssize_t ret; 410 411 gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index); 412 if (IS_ERR(gid_attr)) { 413 const union ib_gid zgid = {}; 414 415 /* If reading GID fails, it is likely due to GID entry being 416 * empty (invalid) or reserved GID in the table. User space 417 * expects to read GID table entries as long as it given index 418 * is within GID table size. Administrative/debugging tool 419 * fails to query rest of the GID entries if it hits error 420 * while querying a GID of the given index. To avoid user 421 * space throwing such error on fail to read gid, return zero 422 * GID as before. This maintains backward compatibility. 423 */ 424 return sprintf(buf, "%pI6\n", zgid.raw); 425 } 426 427 ret = sprintf(buf, GID_PRINT_FMT"\n", GID_PRINT_ARGS(gid_attr->gid.raw)); 428 rdma_put_gid_attr(gid_attr); 429 return ret; 430 } 431 432 static ssize_t show_port_gid_attr_ndev(struct ib_port *p, 433 struct port_attribute *attr, char *buf) 434 { 435 return _show_port_gid_attr(p, attr, buf, print_ndev); 436 } 437 438 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p, 439 struct port_attribute *attr, 440 char *buf) 441 { 442 return _show_port_gid_attr(p, attr, buf, print_gid_type); 443 } 444 445 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 446 char *buf) 447 { 448 struct port_table_attribute *tab_attr = 449 container_of(attr, struct port_table_attribute, attr); 450 u16 pkey; 451 ssize_t ret; 452 453 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 454 if (ret) 455 return ret; 456 457 return sprintf(buf, "0x%04x\n", pkey); 458 } 459 460 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 461 struct port_table_attribute port_pma_attr_##_name = { \ 462 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 463 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \ 464 .attr_id = IB_PMA_PORT_COUNTERS , \ 465 } 466 467 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \ 468 struct port_table_attribute port_pma_attr_ext_##_name = { \ 469 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 470 .index = (_offset) | ((_width) << 16), \ 471 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \ 472 } 473 474 /* 475 * Get a Perfmgmt MAD block of data. 476 * Returns error code or the number of bytes retrieved. 477 */ 478 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr, 479 void *data, int offset, size_t size) 480 { 481 struct ib_mad *in_mad; 482 struct ib_mad *out_mad; 483 size_t mad_size = sizeof(*out_mad); 484 u16 out_mad_pkey_index = 0; 485 ssize_t ret; 486 487 if (!dev->process_mad) 488 return -ENOSYS; 489 490 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 491 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 492 if (!in_mad || !out_mad) { 493 ret = -ENOMEM; 494 goto out; 495 } 496 497 in_mad->mad_hdr.base_version = 1; 498 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 499 in_mad->mad_hdr.class_version = 1; 500 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 501 in_mad->mad_hdr.attr_id = attr; 502 503 if (attr != IB_PMA_CLASS_PORT_INFO) 504 in_mad->data[41] = port_num; /* PortSelect field */ 505 506 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY, 507 port_num, NULL, NULL, 508 (const struct ib_mad_hdr *)in_mad, mad_size, 509 (struct ib_mad_hdr *)out_mad, &mad_size, 510 &out_mad_pkey_index) & 511 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 512 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 513 ret = -EINVAL; 514 goto out; 515 } 516 memcpy(data, out_mad->data + offset, size); 517 ret = size; 518 out: 519 kfree(in_mad); 520 kfree(out_mad); 521 return ret; 522 } 523 524 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 525 char *buf) 526 { 527 struct port_table_attribute *tab_attr = 528 container_of(attr, struct port_table_attribute, attr); 529 int offset = tab_attr->index & 0xffff; 530 int width = (tab_attr->index >> 16) & 0xff; 531 ssize_t ret; 532 u8 data[8]; 533 534 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data, 535 40 + offset / 8, sizeof(data)); 536 if (ret < 0) 537 return ret; 538 539 switch (width) { 540 case 4: 541 ret = sprintf(buf, "%u\n", (*data >> 542 (4 - (offset % 8))) & 0xf); 543 break; 544 case 8: 545 ret = sprintf(buf, "%u\n", *data); 546 break; 547 case 16: 548 ret = sprintf(buf, "%u\n", 549 be16_to_cpup((__be16 *)data)); 550 break; 551 case 32: 552 ret = sprintf(buf, "%u\n", 553 be32_to_cpup((__be32 *)data)); 554 break; 555 case 64: 556 ret = sprintf(buf, "%llu\n", 557 (unsigned long long)be64_to_cpup((__be64 *)data)); 558 break; 559 560 default: 561 ret = 0; 562 } 563 564 return ret; 565 } 566 567 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 568 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 569 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 570 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 571 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 572 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 573 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 574 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 575 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 576 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 577 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 578 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 579 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 580 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 581 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 582 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 583 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320); 584 585 /* 586 * Counters added by extended set 587 */ 588 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64); 589 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128); 590 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192); 591 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256); 592 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320); 593 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384); 594 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448); 595 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512); 596 597 static struct attribute *pma_attrs[] = { 598 &port_pma_attr_symbol_error.attr.attr, 599 &port_pma_attr_link_error_recovery.attr.attr, 600 &port_pma_attr_link_downed.attr.attr, 601 &port_pma_attr_port_rcv_errors.attr.attr, 602 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 603 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 604 &port_pma_attr_port_xmit_discards.attr.attr, 605 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 606 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 607 &port_pma_attr_local_link_integrity_errors.attr.attr, 608 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 609 &port_pma_attr_VL15_dropped.attr.attr, 610 &port_pma_attr_port_xmit_data.attr.attr, 611 &port_pma_attr_port_rcv_data.attr.attr, 612 &port_pma_attr_port_xmit_packets.attr.attr, 613 &port_pma_attr_port_rcv_packets.attr.attr, 614 &port_pma_attr_port_xmit_wait.attr.attr, 615 NULL 616 }; 617 618 static struct attribute *pma_attrs_ext[] = { 619 &port_pma_attr_symbol_error.attr.attr, 620 &port_pma_attr_link_error_recovery.attr.attr, 621 &port_pma_attr_link_downed.attr.attr, 622 &port_pma_attr_port_rcv_errors.attr.attr, 623 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 624 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 625 &port_pma_attr_port_xmit_discards.attr.attr, 626 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 627 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 628 &port_pma_attr_local_link_integrity_errors.attr.attr, 629 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 630 &port_pma_attr_VL15_dropped.attr.attr, 631 &port_pma_attr_ext_port_xmit_data.attr.attr, 632 &port_pma_attr_ext_port_rcv_data.attr.attr, 633 &port_pma_attr_ext_port_xmit_packets.attr.attr, 634 &port_pma_attr_port_xmit_wait.attr.attr, 635 &port_pma_attr_ext_port_rcv_packets.attr.attr, 636 &port_pma_attr_ext_unicast_rcv_packets.attr.attr, 637 &port_pma_attr_ext_unicast_xmit_packets.attr.attr, 638 &port_pma_attr_ext_multicast_rcv_packets.attr.attr, 639 &port_pma_attr_ext_multicast_xmit_packets.attr.attr, 640 NULL 641 }; 642 643 static struct attribute *pma_attrs_noietf[] = { 644 &port_pma_attr_symbol_error.attr.attr, 645 &port_pma_attr_link_error_recovery.attr.attr, 646 &port_pma_attr_link_downed.attr.attr, 647 &port_pma_attr_port_rcv_errors.attr.attr, 648 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 649 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 650 &port_pma_attr_port_xmit_discards.attr.attr, 651 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 652 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 653 &port_pma_attr_local_link_integrity_errors.attr.attr, 654 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 655 &port_pma_attr_VL15_dropped.attr.attr, 656 &port_pma_attr_ext_port_xmit_data.attr.attr, 657 &port_pma_attr_ext_port_rcv_data.attr.attr, 658 &port_pma_attr_ext_port_xmit_packets.attr.attr, 659 &port_pma_attr_ext_port_rcv_packets.attr.attr, 660 &port_pma_attr_port_xmit_wait.attr.attr, 661 NULL 662 }; 663 664 static struct attribute_group pma_group = { 665 .name = "counters", 666 .attrs = pma_attrs 667 }; 668 669 static struct attribute_group pma_group_ext = { 670 .name = "counters", 671 .attrs = pma_attrs_ext 672 }; 673 674 static struct attribute_group pma_group_noietf = { 675 .name = "counters", 676 .attrs = pma_attrs_noietf 677 }; 678 679 static void ib_port_release(struct kobject *kobj) 680 { 681 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 682 struct attribute *a; 683 int i; 684 685 if (p->gid_group.attrs) { 686 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 687 kfree(a); 688 689 kfree(p->gid_group.attrs); 690 } 691 692 if (p->pkey_group.attrs) { 693 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 694 kfree(a); 695 696 kfree(p->pkey_group.attrs); 697 } 698 699 kfree(p); 700 } 701 702 static void ib_port_gid_attr_release(struct kobject *kobj) 703 { 704 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group, 705 kobj); 706 struct attribute *a; 707 int i; 708 709 if (g->ndev.attrs) { 710 for (i = 0; (a = g->ndev.attrs[i]); ++i) 711 kfree(a); 712 713 kfree(g->ndev.attrs); 714 } 715 716 if (g->type.attrs) { 717 for (i = 0; (a = g->type.attrs[i]); ++i) 718 kfree(a); 719 720 kfree(g->type.attrs); 721 } 722 723 kfree(g); 724 } 725 726 static struct kobj_type port_type = { 727 .release = ib_port_release, 728 .sysfs_ops = &port_sysfs_ops, 729 .default_attrs = port_default_attrs 730 }; 731 732 static struct kobj_type gid_attr_type = { 733 .sysfs_ops = &gid_attr_sysfs_ops, 734 .release = ib_port_gid_attr_release 735 }; 736 737 static struct attribute ** 738 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 739 struct port_attribute *, char *buf), 740 int len) 741 { 742 struct attribute **tab_attr; 743 struct port_table_attribute *element; 744 int i; 745 746 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 747 if (!tab_attr) 748 return NULL; 749 750 for (i = 0; i < len; i++) { 751 element = kzalloc(sizeof(struct port_table_attribute), 752 GFP_KERNEL); 753 if (!element) 754 goto err; 755 756 if (snprintf(element->name, sizeof(element->name), 757 "%d", i) >= sizeof(element->name)) { 758 kfree(element); 759 goto err; 760 } 761 762 element->attr.attr.name = element->name; 763 element->attr.attr.mode = S_IRUGO; 764 element->attr.show = show; 765 element->index = i; 766 sysfs_attr_init(&element->attr.attr); 767 768 tab_attr[i] = &element->attr.attr; 769 } 770 771 return tab_attr; 772 773 err: 774 while (--i >= 0) 775 kfree(tab_attr[i]); 776 kfree(tab_attr); 777 return NULL; 778 } 779 780 /* 781 * Figure out which counter table to use depending on 782 * the device capabilities. 783 */ 784 static struct attribute_group *get_counter_table(struct ib_device *dev, 785 int port_num) 786 { 787 struct ib_class_port_info cpi; 788 789 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO, 790 &cpi, 40, sizeof(cpi)) >= 0) { 791 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH) 792 /* We have extended counters */ 793 return &pma_group_ext; 794 795 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) 796 /* But not the IETF ones */ 797 return &pma_group_noietf; 798 } 799 800 /* Fall back to normal counters */ 801 return &pma_group; 802 } 803 804 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats, 805 u8 port_num, int index) 806 { 807 int ret; 808 809 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan)) 810 return 0; 811 ret = dev->get_hw_stats(dev, stats, port_num, index); 812 if (ret < 0) 813 return ret; 814 if (ret == stats->num_counters) 815 stats->timestamp = jiffies; 816 817 return 0; 818 } 819 820 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf) 821 { 822 return sprintf(buf, "%llu\n", (unsigned long long)stats->value[index]); 823 } 824 825 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr, 826 char *buf) 827 { 828 struct ib_device *dev; 829 struct ib_port *port; 830 struct hw_stats_attribute *hsa; 831 struct rdma_hw_stats *stats; 832 int ret; 833 834 hsa = container_of(attr, struct hw_stats_attribute, attr); 835 if (!hsa->port_num) { 836 dev = container_of((struct device *)kobj, 837 struct ib_device, dev); 838 stats = dev->hw_stats; 839 } else { 840 port = container_of(kobj, struct ib_port, kobj); 841 dev = port->ibdev; 842 stats = port->hw_stats; 843 } 844 mutex_lock(&stats->lock); 845 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index); 846 if (ret) 847 goto unlock; 848 ret = print_hw_stat(stats, hsa->index, buf); 849 unlock: 850 mutex_unlock(&stats->lock); 851 852 return ret; 853 } 854 855 static ssize_t show_stats_lifespan(struct kobject *kobj, 856 struct attribute *attr, 857 char *buf) 858 { 859 struct hw_stats_attribute *hsa; 860 struct rdma_hw_stats *stats; 861 int msecs; 862 863 hsa = container_of(attr, struct hw_stats_attribute, attr); 864 if (!hsa->port_num) { 865 struct ib_device *dev = container_of((struct device *)kobj, 866 struct ib_device, dev); 867 868 stats = dev->hw_stats; 869 } else { 870 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 871 872 stats = p->hw_stats; 873 } 874 875 mutex_lock(&stats->lock); 876 msecs = jiffies_to_msecs(stats->lifespan); 877 mutex_unlock(&stats->lock); 878 879 return sprintf(buf, "%d\n", msecs); 880 } 881 882 static ssize_t set_stats_lifespan(struct kobject *kobj, 883 struct attribute *attr, 884 const char *buf, size_t count) 885 { 886 struct hw_stats_attribute *hsa; 887 struct rdma_hw_stats *stats; 888 int msecs; 889 unsigned long jiffies; 890 int ret; 891 892 ret = kstrtoint(buf, 10, &msecs); 893 if (ret) 894 return ret; 895 if (msecs < 0 || msecs > 10000) 896 return -EINVAL; 897 jiffies = msecs_to_jiffies(msecs); 898 hsa = container_of(attr, struct hw_stats_attribute, attr); 899 if (!hsa->port_num) { 900 struct ib_device *dev = container_of((struct device *)kobj, 901 struct ib_device, dev); 902 903 stats = dev->hw_stats; 904 } else { 905 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 906 907 stats = p->hw_stats; 908 } 909 910 mutex_lock(&stats->lock); 911 stats->lifespan = jiffies; 912 mutex_unlock(&stats->lock); 913 914 return count; 915 } 916 917 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group) 918 { 919 struct attribute **attr; 920 921 sysfs_remove_group(kobj, attr_group); 922 923 for (attr = attr_group->attrs; *attr; attr++) 924 kfree(*attr); 925 kfree(attr_group); 926 } 927 928 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name) 929 { 930 struct hw_stats_attribute *hsa; 931 932 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 933 if (!hsa) 934 return NULL; 935 936 hsa->attr.name = __DECONST(char *, name); 937 hsa->attr.mode = S_IRUGO; 938 hsa->show = show_hw_stats; 939 hsa->store = NULL; 940 hsa->index = index; 941 hsa->port_num = port_num; 942 943 return &hsa->attr; 944 } 945 946 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num) 947 { 948 struct hw_stats_attribute *hsa; 949 950 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 951 if (!hsa) 952 return NULL; 953 954 hsa->attr.name = name; 955 hsa->attr.mode = S_IWUSR | S_IRUGO; 956 hsa->show = show_stats_lifespan; 957 hsa->store = set_stats_lifespan; 958 hsa->index = 0; 959 hsa->port_num = port_num; 960 961 return &hsa->attr; 962 } 963 964 static void setup_hw_stats(struct ib_device *device, struct ib_port *port, 965 u8 port_num) 966 { 967 struct attribute_group *hsag; 968 struct rdma_hw_stats *stats; 969 int i, ret; 970 971 stats = device->alloc_hw_stats(device, port_num); 972 973 if (!stats) 974 return; 975 976 if (!stats->names || stats->num_counters <= 0) 977 goto err_free_stats; 978 979 /* 980 * Two extra attribue elements here, one for the lifespan entry and 981 * one to NULL terminate the list for the sysfs core code 982 */ 983 hsag = kzalloc(sizeof(*hsag) + 984 sizeof(void *) * (stats->num_counters + 2), 985 GFP_KERNEL); 986 if (!hsag) 987 goto err_free_stats; 988 989 ret = device->get_hw_stats(device, stats, port_num, 990 stats->num_counters); 991 if (ret != stats->num_counters) 992 goto err_free_hsag; 993 994 stats->timestamp = jiffies; 995 996 hsag->name = "hw_counters"; 997 hsag->attrs = (void *)((char *)hsag + sizeof(*hsag)); 998 999 for (i = 0; i < stats->num_counters; i++) { 1000 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]); 1001 if (!hsag->attrs[i]) 1002 goto err; 1003 sysfs_attr_init(hsag->attrs[i]); 1004 } 1005 1006 mutex_init(&stats->lock); 1007 /* treat an error here as non-fatal */ 1008 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num); 1009 if (hsag->attrs[i]) 1010 sysfs_attr_init(hsag->attrs[i]); 1011 1012 if (port) { 1013 struct kobject *kobj = &port->kobj; 1014 ret = sysfs_create_group(kobj, hsag); 1015 if (ret) 1016 goto err; 1017 port->hw_stats_ag = hsag; 1018 port->hw_stats = stats; 1019 } else { 1020 struct kobject *kobj = &device->dev.kobj; 1021 ret = sysfs_create_group(kobj, hsag); 1022 if (ret) 1023 goto err; 1024 device->hw_stats_ag = hsag; 1025 device->hw_stats = stats; 1026 } 1027 1028 return; 1029 1030 err: 1031 for (; i >= 0; i--) 1032 kfree(hsag->attrs[i]); 1033 err_free_hsag: 1034 kfree(hsag); 1035 err_free_stats: 1036 kfree(stats); 1037 return; 1038 } 1039 1040 static int add_port(struct ib_device *device, int port_num, 1041 int (*port_callback)(struct ib_device *, 1042 u8, struct kobject *)) 1043 { 1044 struct ib_port *p; 1045 struct ib_port_attr attr; 1046 int i; 1047 int ret; 1048 1049 ret = ib_query_port(device, port_num, &attr); 1050 if (ret) 1051 return ret; 1052 1053 p = kzalloc(sizeof *p, GFP_KERNEL); 1054 if (!p) 1055 return -ENOMEM; 1056 1057 p->ibdev = device; 1058 p->port_num = port_num; 1059 1060 ret = kobject_init_and_add(&p->kobj, &port_type, 1061 device->ports_parent, 1062 "%d", port_num); 1063 if (ret) { 1064 kfree(p); 1065 return ret; 1066 } 1067 1068 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL); 1069 if (!p->gid_attr_group) { 1070 ret = -ENOMEM; 1071 goto err_put; 1072 } 1073 1074 p->gid_attr_group->port = p; 1075 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type, 1076 &p->kobj, "gid_attrs"); 1077 if (ret) { 1078 kfree(p->gid_attr_group); 1079 goto err_put; 1080 } 1081 1082 if (device->process_mad) { 1083 p->pma_table = get_counter_table(device, port_num); 1084 ret = sysfs_create_group(&p->kobj, p->pma_table); 1085 if (ret) 1086 goto err_put_gid_attrs; 1087 } 1088 1089 p->gid_group.name = "gids"; 1090 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 1091 if (!p->gid_group.attrs) { 1092 ret = -ENOMEM; 1093 goto err_remove_pma; 1094 } 1095 1096 ret = sysfs_create_group(&p->kobj, &p->gid_group); 1097 if (ret) 1098 goto err_free_gid; 1099 1100 p->gid_attr_group->ndev.name = "ndevs"; 1101 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev, 1102 attr.gid_tbl_len); 1103 if (!p->gid_attr_group->ndev.attrs) { 1104 ret = -ENOMEM; 1105 goto err_remove_gid; 1106 } 1107 1108 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1109 &p->gid_attr_group->ndev); 1110 if (ret) 1111 goto err_free_gid_ndev; 1112 1113 p->gid_attr_group->type.name = "types"; 1114 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type, 1115 attr.gid_tbl_len); 1116 if (!p->gid_attr_group->type.attrs) { 1117 ret = -ENOMEM; 1118 goto err_remove_gid_ndev; 1119 } 1120 1121 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1122 &p->gid_attr_group->type); 1123 if (ret) 1124 goto err_free_gid_type; 1125 1126 p->pkey_group.name = "pkeys"; 1127 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 1128 attr.pkey_tbl_len); 1129 if (!p->pkey_group.attrs) { 1130 ret = -ENOMEM; 1131 goto err_remove_gid_type; 1132 } 1133 1134 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 1135 if (ret) 1136 goto err_free_pkey; 1137 1138 if (port_callback) { 1139 ret = port_callback(device, port_num, &p->kobj); 1140 if (ret) 1141 goto err_remove_pkey; 1142 } 1143 1144 /* 1145 * If port == 0, it means we have only one port and the parent 1146 * device, not this port device, should be the holder of the 1147 * hw_counters 1148 */ 1149 if (device->alloc_hw_stats && port_num) 1150 setup_hw_stats(device, p, port_num); 1151 1152 list_add_tail(&p->kobj.entry, &device->port_list); 1153 1154 return 0; 1155 1156 err_remove_pkey: 1157 sysfs_remove_group(&p->kobj, &p->pkey_group); 1158 1159 err_free_pkey: 1160 for (i = 0; i < attr.pkey_tbl_len; ++i) 1161 kfree(p->pkey_group.attrs[i]); 1162 1163 kfree(p->pkey_group.attrs); 1164 p->pkey_group.attrs = NULL; 1165 1166 err_remove_gid_type: 1167 sysfs_remove_group(&p->gid_attr_group->kobj, 1168 &p->gid_attr_group->type); 1169 1170 err_free_gid_type: 1171 for (i = 0; i < attr.gid_tbl_len; ++i) 1172 kfree(p->gid_attr_group->type.attrs[i]); 1173 1174 kfree(p->gid_attr_group->type.attrs); 1175 p->gid_attr_group->type.attrs = NULL; 1176 1177 err_remove_gid_ndev: 1178 sysfs_remove_group(&p->gid_attr_group->kobj, 1179 &p->gid_attr_group->ndev); 1180 1181 err_free_gid_ndev: 1182 for (i = 0; i < attr.gid_tbl_len; ++i) 1183 kfree(p->gid_attr_group->ndev.attrs[i]); 1184 1185 kfree(p->gid_attr_group->ndev.attrs); 1186 p->gid_attr_group->ndev.attrs = NULL; 1187 1188 err_remove_gid: 1189 sysfs_remove_group(&p->kobj, &p->gid_group); 1190 1191 err_free_gid: 1192 for (i = 0; i < attr.gid_tbl_len; ++i) 1193 kfree(p->gid_group.attrs[i]); 1194 1195 kfree(p->gid_group.attrs); 1196 p->gid_group.attrs = NULL; 1197 1198 err_remove_pma: 1199 if (p->pma_table) 1200 sysfs_remove_group(&p->kobj, p->pma_table); 1201 1202 err_put_gid_attrs: 1203 kobject_put(&p->gid_attr_group->kobj); 1204 1205 err_put: 1206 kobject_put(&p->kobj); 1207 return ret; 1208 } 1209 1210 static ssize_t node_type_show(struct device *device, 1211 struct device_attribute *attr, char *buf) 1212 { 1213 struct ib_device *dev = container_of(device, struct ib_device, dev); 1214 1215 switch (dev->node_type) { 1216 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 1217 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 1218 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); 1219 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); 1220 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 1221 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 1222 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 1223 } 1224 } 1225 static DEVICE_ATTR_RO(node_type); 1226 1227 static ssize_t sys_image_guid_show(struct device *device, 1228 struct device_attribute *dev_attr, char *buf) 1229 { 1230 struct ib_device *dev = container_of(device, struct ib_device, dev); 1231 1232 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1233 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]), 1234 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]), 1235 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]), 1236 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3])); 1237 } 1238 static DEVICE_ATTR_RO(sys_image_guid); 1239 1240 static ssize_t node_guid_show(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, "%04x:%04x:%04x:%04x\n", 1246 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 1247 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 1248 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 1249 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 1250 } 1251 static DEVICE_ATTR_RO(node_guid); 1252 1253 static ssize_t node_desc_show(struct device *device, 1254 struct device_attribute *attr, char *buf) 1255 { 1256 struct ib_device *dev = container_of(device, struct ib_device, dev); 1257 1258 return sprintf(buf, "%.64s\n", dev->node_desc); 1259 } 1260 1261 static ssize_t node_desc_store(struct device *device, 1262 struct device_attribute *attr, 1263 const char *buf, size_t count) 1264 { 1265 struct ib_device *dev = container_of(device, struct ib_device, dev); 1266 struct ib_device_modify desc = {}; 1267 int ret; 1268 1269 if (!dev->modify_device) 1270 return -EIO; 1271 1272 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX)); 1273 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 1274 if (ret) 1275 return ret; 1276 1277 return count; 1278 } 1279 static DEVICE_ATTR_RW(node_desc); 1280 1281 static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr, 1282 char *buf) 1283 { 1284 struct ib_device *dev = container_of(device, struct ib_device, dev); 1285 1286 ib_get_device_fw_str(dev, buf, PAGE_SIZE); 1287 strlcat(buf, "\n", PAGE_SIZE); 1288 return strlen(buf); 1289 } 1290 static DEVICE_ATTR_RO(fw_ver); 1291 1292 static struct attribute *ib_dev_attrs[] = { 1293 &dev_attr_node_type.attr, 1294 &dev_attr_node_guid.attr, 1295 &dev_attr_sys_image_guid.attr, 1296 &dev_attr_fw_ver.attr, 1297 &dev_attr_node_desc.attr, 1298 NULL, 1299 }; 1300 1301 static const struct attribute_group dev_attr_group = { 1302 .attrs = ib_dev_attrs, 1303 }; 1304 1305 static void free_port_list_attributes(struct ib_device *device) 1306 { 1307 struct kobject *p, *t; 1308 1309 list_for_each_entry_safe(p, t, &device->port_list, entry) { 1310 struct ib_port *port = container_of(p, struct ib_port, kobj); 1311 list_del(&p->entry); 1312 if (port->hw_stats) { 1313 kfree(port->hw_stats); 1314 free_hsag(&port->kobj, port->hw_stats_ag); 1315 } 1316 1317 if (port->pma_table) 1318 sysfs_remove_group(p, port->pma_table); 1319 sysfs_remove_group(p, &port->pkey_group); 1320 sysfs_remove_group(p, &port->gid_group); 1321 sysfs_remove_group(&port->gid_attr_group->kobj, 1322 &port->gid_attr_group->ndev); 1323 sysfs_remove_group(&port->gid_attr_group->kobj, 1324 &port->gid_attr_group->type); 1325 kobject_put(&port->gid_attr_group->kobj); 1326 kobject_put(p); 1327 } 1328 1329 kobject_put(device->ports_parent); 1330 } 1331 1332 int ib_device_register_sysfs(struct ib_device *device, 1333 int (*port_callback)(struct ib_device *, 1334 u8, struct kobject *)) 1335 { 1336 struct device *class_dev = &device->dev; 1337 int ret; 1338 int i; 1339 1340 device->dev.parent = device->dma_device; 1341 ret = dev_set_name(class_dev, "%s", device->name); 1342 if (ret) 1343 return ret; 1344 1345 device->groups[0] = &dev_attr_group; 1346 class_dev->groups = device->groups; 1347 1348 ret = device_add(class_dev); 1349 if (ret) 1350 goto err; 1351 1352 device->ports_parent = kobject_create_and_add("ports", 1353 &class_dev->kobj); 1354 if (!device->ports_parent) { 1355 ret = -ENOMEM; 1356 goto err_put; 1357 } 1358 1359 if (rdma_cap_ib_switch(device)) { 1360 ret = add_port(device, 0, port_callback); 1361 if (ret) 1362 goto err_put; 1363 } else { 1364 for (i = 1; i <= device->phys_port_cnt; ++i) { 1365 ret = add_port(device, i, port_callback); 1366 if (ret) 1367 goto err_put; 1368 } 1369 } 1370 1371 if (device->alloc_hw_stats) 1372 setup_hw_stats(device, NULL, 0); 1373 1374 return 0; 1375 1376 err_put: 1377 free_port_list_attributes(device); 1378 device_del(class_dev); 1379 err: 1380 return ret; 1381 } 1382 1383 void ib_device_unregister_sysfs(struct ib_device *device) 1384 { 1385 /* Hold device until ib_dealloc_device() */ 1386 get_device(&device->dev); 1387 1388 free_port_list_attributes(device); 1389 1390 if (device->hw_stats) { 1391 kfree(device->hw_stats); 1392 free_hsag(&device->dev.kobj, device->hw_stats_ag); 1393 } 1394 1395 device_unregister(&device->dev); 1396 } 1397 1398 /** 1399 * ib_port_register_module_stat - add module counters under relevant port 1400 * of IB device. 1401 * 1402 * @device: IB device to add counters 1403 * @port_num: valid port number 1404 * @kobj: pointer to the kobject to initialize 1405 * @ktype: pointer to the ktype for this kobject. 1406 * @name: the name of the kobject 1407 */ 1408 int ib_port_register_module_stat(struct ib_device *device, u8 port_num, 1409 struct kobject *kobj, struct kobj_type *ktype, 1410 const char *name) 1411 { 1412 struct kobject *p, *t; 1413 int ret; 1414 1415 list_for_each_entry_safe(p, t, &device->port_list, entry) { 1416 struct ib_port *port = container_of(p, struct ib_port, kobj); 1417 1418 if (port->port_num != port_num) 1419 continue; 1420 1421 ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s", 1422 name); 1423 if (ret) { 1424 kobject_put(kobj); 1425 return ret; 1426 } 1427 } 1428 1429 return 0; 1430 } 1431 EXPORT_SYMBOL(ib_port_register_module_stat); 1432 1433 /** 1434 * ib_port_unregister_module_stat - release module counters 1435 * @kobj: pointer to the kobject to release 1436 */ 1437 void ib_port_unregister_module_stat(struct kobject *kobj) 1438 { 1439 kobject_put(kobj); 1440 } 1441 EXPORT_SYMBOL(ib_port_unregister_module_stat); 1442