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 * $Id: sysfs.c 1349 2004-12-16 21:09:43Z roland $ 35 */ 36 37 #include "core_priv.h" 38 39 #include <linux/slab.h> 40 #include <linux/string.h> 41 42 #include <rdma/ib_mad.h> 43 44 struct ib_port { 45 struct kobject kobj; 46 struct ib_device *ibdev; 47 struct attribute_group gid_group; 48 struct attribute_group pkey_group; 49 u8 port_num; 50 }; 51 52 struct port_attribute { 53 struct attribute attr; 54 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); 55 ssize_t (*store)(struct ib_port *, struct port_attribute *, 56 const char *buf, size_t count); 57 }; 58 59 #define PORT_ATTR(_name, _mode, _show, _store) \ 60 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 61 62 #define PORT_ATTR_RO(_name) \ 63 struct port_attribute port_attr_##_name = __ATTR_RO(_name) 64 65 struct port_table_attribute { 66 struct port_attribute attr; 67 char name[8]; 68 int index; 69 }; 70 71 static inline int ibdev_is_alive(const struct ib_device *dev) 72 { 73 return dev->reg_state == IB_DEV_REGISTERED; 74 } 75 76 static ssize_t port_attr_show(struct kobject *kobj, 77 struct attribute *attr, char *buf) 78 { 79 struct port_attribute *port_attr = 80 container_of(attr, struct port_attribute, attr); 81 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 82 83 if (!port_attr->show) 84 return -EIO; 85 if (!ibdev_is_alive(p->ibdev)) 86 return -ENODEV; 87 88 return port_attr->show(p, port_attr, buf); 89 } 90 91 static struct sysfs_ops port_sysfs_ops = { 92 .show = port_attr_show 93 }; 94 95 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, 96 char *buf) 97 { 98 struct ib_port_attr attr; 99 ssize_t ret; 100 101 static const char *state_name[] = { 102 [IB_PORT_NOP] = "NOP", 103 [IB_PORT_DOWN] = "DOWN", 104 [IB_PORT_INIT] = "INIT", 105 [IB_PORT_ARMED] = "ARMED", 106 [IB_PORT_ACTIVE] = "ACTIVE", 107 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 108 }; 109 110 ret = ib_query_port(p->ibdev, p->port_num, &attr); 111 if (ret) 112 return ret; 113 114 return sprintf(buf, "%d: %s\n", attr.state, 115 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 116 state_name[attr.state] : "UNKNOWN"); 117 } 118 119 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 120 char *buf) 121 { 122 struct ib_port_attr attr; 123 ssize_t ret; 124 125 ret = ib_query_port(p->ibdev, p->port_num, &attr); 126 if (ret) 127 return ret; 128 129 return sprintf(buf, "0x%x\n", attr.lid); 130 } 131 132 static ssize_t lid_mask_count_show(struct ib_port *p, 133 struct port_attribute *unused, 134 char *buf) 135 { 136 struct ib_port_attr attr; 137 ssize_t ret; 138 139 ret = ib_query_port(p->ibdev, p->port_num, &attr); 140 if (ret) 141 return ret; 142 143 return sprintf(buf, "%d\n", attr.lmc); 144 } 145 146 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, 147 char *buf) 148 { 149 struct ib_port_attr attr; 150 ssize_t ret; 151 152 ret = ib_query_port(p->ibdev, p->port_num, &attr); 153 if (ret) 154 return ret; 155 156 return sprintf(buf, "0x%x\n", attr.sm_lid); 157 } 158 159 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, 160 char *buf) 161 { 162 struct ib_port_attr attr; 163 ssize_t ret; 164 165 ret = ib_query_port(p->ibdev, p->port_num, &attr); 166 if (ret) 167 return ret; 168 169 return sprintf(buf, "%d\n", attr.sm_sl); 170 } 171 172 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 173 char *buf) 174 { 175 struct ib_port_attr attr; 176 ssize_t ret; 177 178 ret = ib_query_port(p->ibdev, p->port_num, &attr); 179 if (ret) 180 return ret; 181 182 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 183 } 184 185 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 186 char *buf) 187 { 188 struct ib_port_attr attr; 189 char *speed = ""; 190 int rate; 191 ssize_t ret; 192 193 ret = ib_query_port(p->ibdev, p->port_num, &attr); 194 if (ret) 195 return ret; 196 197 switch (attr.active_speed) { 198 case 2: speed = " DDR"; break; 199 case 4: speed = " QDR"; break; 200 } 201 202 rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed; 203 if (rate < 0) 204 return -EINVAL; 205 206 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 207 rate / 10, rate % 10 ? ".5" : "", 208 ib_width_enum_to_int(attr.active_width), speed); 209 } 210 211 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 212 char *buf) 213 { 214 struct ib_port_attr attr; 215 216 ssize_t ret; 217 218 ret = ib_query_port(p->ibdev, p->port_num, &attr); 219 if (ret) 220 return ret; 221 222 switch (attr.phys_state) { 223 case 1: return sprintf(buf, "1: Sleep\n"); 224 case 2: return sprintf(buf, "2: Polling\n"); 225 case 3: return sprintf(buf, "3: Disabled\n"); 226 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 227 case 5: return sprintf(buf, "5: LinkUp\n"); 228 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 229 case 7: return sprintf(buf, "7: Phy Test\n"); 230 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 231 } 232 } 233 234 static PORT_ATTR_RO(state); 235 static PORT_ATTR_RO(lid); 236 static PORT_ATTR_RO(lid_mask_count); 237 static PORT_ATTR_RO(sm_lid); 238 static PORT_ATTR_RO(sm_sl); 239 static PORT_ATTR_RO(cap_mask); 240 static PORT_ATTR_RO(rate); 241 static PORT_ATTR_RO(phys_state); 242 243 static struct attribute *port_default_attrs[] = { 244 &port_attr_state.attr, 245 &port_attr_lid.attr, 246 &port_attr_lid_mask_count.attr, 247 &port_attr_sm_lid.attr, 248 &port_attr_sm_sl.attr, 249 &port_attr_cap_mask.attr, 250 &port_attr_rate.attr, 251 &port_attr_phys_state.attr, 252 NULL 253 }; 254 255 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 256 char *buf) 257 { 258 struct port_table_attribute *tab_attr = 259 container_of(attr, struct port_table_attribute, attr); 260 union ib_gid gid; 261 ssize_t ret; 262 263 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid); 264 if (ret) 265 return ret; 266 267 return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n", 268 be16_to_cpu(((__be16 *) gid.raw)[0]), 269 be16_to_cpu(((__be16 *) gid.raw)[1]), 270 be16_to_cpu(((__be16 *) gid.raw)[2]), 271 be16_to_cpu(((__be16 *) gid.raw)[3]), 272 be16_to_cpu(((__be16 *) gid.raw)[4]), 273 be16_to_cpu(((__be16 *) gid.raw)[5]), 274 be16_to_cpu(((__be16 *) gid.raw)[6]), 275 be16_to_cpu(((__be16 *) gid.raw)[7])); 276 } 277 278 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 279 char *buf) 280 { 281 struct port_table_attribute *tab_attr = 282 container_of(attr, struct port_table_attribute, attr); 283 u16 pkey; 284 ssize_t ret; 285 286 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 287 if (ret) 288 return ret; 289 290 return sprintf(buf, "0x%04x\n", pkey); 291 } 292 293 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 294 struct port_table_attribute port_pma_attr_##_name = { \ 295 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 296 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \ 297 } 298 299 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 300 char *buf) 301 { 302 struct port_table_attribute *tab_attr = 303 container_of(attr, struct port_table_attribute, attr); 304 int offset = tab_attr->index & 0xffff; 305 int width = (tab_attr->index >> 16) & 0xff; 306 struct ib_mad *in_mad = NULL; 307 struct ib_mad *out_mad = NULL; 308 ssize_t ret; 309 310 if (!p->ibdev->process_mad) 311 return sprintf(buf, "N/A (no PMA)\n"); 312 313 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 314 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 315 if (!in_mad || !out_mad) { 316 ret = -ENOMEM; 317 goto out; 318 } 319 320 in_mad->mad_hdr.base_version = 1; 321 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 322 in_mad->mad_hdr.class_version = 1; 323 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 324 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */ 325 326 in_mad->data[41] = p->port_num; /* PortSelect field */ 327 328 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY, 329 p->port_num, NULL, NULL, in_mad, out_mad) & 330 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 331 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 332 ret = -EINVAL; 333 goto out; 334 } 335 336 switch (width) { 337 case 4: 338 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >> 339 (4 - (offset % 8))) & 0xf); 340 break; 341 case 8: 342 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]); 343 break; 344 case 16: 345 ret = sprintf(buf, "%u\n", 346 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8))); 347 break; 348 case 32: 349 ret = sprintf(buf, "%u\n", 350 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8))); 351 break; 352 default: 353 ret = 0; 354 } 355 356 out: 357 kfree(in_mad); 358 kfree(out_mad); 359 360 return ret; 361 } 362 363 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 364 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 365 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 366 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 367 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 368 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 369 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 370 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 371 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 372 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 373 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 374 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 375 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 376 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 377 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 378 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 379 380 static struct attribute *pma_attrs[] = { 381 &port_pma_attr_symbol_error.attr.attr, 382 &port_pma_attr_link_error_recovery.attr.attr, 383 &port_pma_attr_link_downed.attr.attr, 384 &port_pma_attr_port_rcv_errors.attr.attr, 385 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 386 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 387 &port_pma_attr_port_xmit_discards.attr.attr, 388 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 389 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 390 &port_pma_attr_local_link_integrity_errors.attr.attr, 391 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 392 &port_pma_attr_VL15_dropped.attr.attr, 393 &port_pma_attr_port_xmit_data.attr.attr, 394 &port_pma_attr_port_rcv_data.attr.attr, 395 &port_pma_attr_port_xmit_packets.attr.attr, 396 &port_pma_attr_port_rcv_packets.attr.attr, 397 NULL 398 }; 399 400 static struct attribute_group pma_group = { 401 .name = "counters", 402 .attrs = pma_attrs 403 }; 404 405 static void ib_port_release(struct kobject *kobj) 406 { 407 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 408 struct attribute *a; 409 int i; 410 411 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 412 kfree(a); 413 414 kfree(p->gid_group.attrs); 415 416 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 417 kfree(a); 418 419 kfree(p->pkey_group.attrs); 420 421 kfree(p); 422 } 423 424 static struct kobj_type port_type = { 425 .release = ib_port_release, 426 .sysfs_ops = &port_sysfs_ops, 427 .default_attrs = port_default_attrs 428 }; 429 430 static void ib_device_release(struct class_device *cdev) 431 { 432 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev); 433 434 kfree(dev); 435 } 436 437 static int ib_device_uevent(struct class_device *cdev, 438 struct kobj_uevent_env *env) 439 { 440 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev); 441 442 if (add_uevent_var(env, "NAME=%s", dev->name)) 443 return -ENOMEM; 444 445 /* 446 * It would be nice to pass the node GUID with the event... 447 */ 448 449 return 0; 450 } 451 452 static struct attribute ** 453 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 454 struct port_attribute *, char *buf), 455 int len) 456 { 457 struct attribute **tab_attr; 458 struct port_table_attribute *element; 459 int i; 460 461 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 462 if (!tab_attr) 463 return NULL; 464 465 for (i = 0; i < len; i++) { 466 element = kzalloc(sizeof(struct port_table_attribute), 467 GFP_KERNEL); 468 if (!element) 469 goto err; 470 471 if (snprintf(element->name, sizeof(element->name), 472 "%d", i) >= sizeof(element->name)) { 473 kfree(element); 474 goto err; 475 } 476 477 element->attr.attr.name = element->name; 478 element->attr.attr.mode = S_IRUGO; 479 element->attr.show = show; 480 element->index = i; 481 482 tab_attr[i] = &element->attr.attr; 483 } 484 485 return tab_attr; 486 487 err: 488 while (--i >= 0) 489 kfree(tab_attr[i]); 490 kfree(tab_attr); 491 return NULL; 492 } 493 494 static int add_port(struct ib_device *device, int port_num) 495 { 496 struct ib_port *p; 497 struct ib_port_attr attr; 498 int i; 499 int ret; 500 501 ret = ib_query_port(device, port_num, &attr); 502 if (ret) 503 return ret; 504 505 p = kzalloc(sizeof *p, GFP_KERNEL); 506 if (!p) 507 return -ENOMEM; 508 509 p->ibdev = device; 510 p->port_num = port_num; 511 p->kobj.ktype = &port_type; 512 513 p->kobj.parent = kobject_get(&device->ports_parent); 514 if (!p->kobj.parent) { 515 ret = -EBUSY; 516 goto err; 517 } 518 519 ret = kobject_set_name(&p->kobj, "%d", port_num); 520 if (ret) 521 goto err_put; 522 523 ret = kobject_register(&p->kobj); 524 if (ret) 525 goto err_put; 526 527 ret = sysfs_create_group(&p->kobj, &pma_group); 528 if (ret) 529 goto err_put; 530 531 p->gid_group.name = "gids"; 532 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 533 if (!p->gid_group.attrs) 534 goto err_remove_pma; 535 536 ret = sysfs_create_group(&p->kobj, &p->gid_group); 537 if (ret) 538 goto err_free_gid; 539 540 p->pkey_group.name = "pkeys"; 541 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 542 attr.pkey_tbl_len); 543 if (!p->pkey_group.attrs) 544 goto err_remove_gid; 545 546 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 547 if (ret) 548 goto err_free_pkey; 549 550 list_add_tail(&p->kobj.entry, &device->port_list); 551 552 return 0; 553 554 err_free_pkey: 555 for (i = 0; i < attr.pkey_tbl_len; ++i) 556 kfree(p->pkey_group.attrs[i]); 557 558 kfree(p->pkey_group.attrs); 559 560 err_remove_gid: 561 sysfs_remove_group(&p->kobj, &p->gid_group); 562 563 err_free_gid: 564 for (i = 0; i < attr.gid_tbl_len; ++i) 565 kfree(p->gid_group.attrs[i]); 566 567 kfree(p->gid_group.attrs); 568 569 err_remove_pma: 570 sysfs_remove_group(&p->kobj, &pma_group); 571 572 err_put: 573 kobject_put(&device->ports_parent); 574 575 err: 576 kfree(p); 577 return ret; 578 } 579 580 static ssize_t show_node_type(struct class_device *cdev, char *buf) 581 { 582 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev); 583 584 if (!ibdev_is_alive(dev)) 585 return -ENODEV; 586 587 switch (dev->node_type) { 588 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 589 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 590 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 591 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 592 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 593 } 594 } 595 596 static ssize_t show_sys_image_guid(struct class_device *cdev, char *buf) 597 { 598 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev); 599 struct ib_device_attr attr; 600 ssize_t ret; 601 602 if (!ibdev_is_alive(dev)) 603 return -ENODEV; 604 605 ret = ib_query_device(dev, &attr); 606 if (ret) 607 return ret; 608 609 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 610 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]), 611 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]), 612 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]), 613 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3])); 614 } 615 616 static ssize_t show_node_guid(struct class_device *cdev, char *buf) 617 { 618 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev); 619 620 if (!ibdev_is_alive(dev)) 621 return -ENODEV; 622 623 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 624 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 625 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 626 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 627 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 628 } 629 630 static ssize_t show_node_desc(struct class_device *cdev, char *buf) 631 { 632 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev); 633 634 return sprintf(buf, "%.64s\n", dev->node_desc); 635 } 636 637 static ssize_t set_node_desc(struct class_device *cdev, const char *buf, 638 size_t count) 639 { 640 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev); 641 struct ib_device_modify desc = {}; 642 int ret; 643 644 if (!dev->modify_device) 645 return -EIO; 646 647 memcpy(desc.node_desc, buf, min_t(int, count, 64)); 648 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 649 if (ret) 650 return ret; 651 652 return count; 653 } 654 655 static CLASS_DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 656 static CLASS_DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 657 static CLASS_DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 658 static CLASS_DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, 659 set_node_desc); 660 661 static struct class_device_attribute *ib_class_attributes[] = { 662 &class_device_attr_node_type, 663 &class_device_attr_sys_image_guid, 664 &class_device_attr_node_guid, 665 &class_device_attr_node_desc 666 }; 667 668 static struct class ib_class = { 669 .name = "infiniband", 670 .release = ib_device_release, 671 .uevent = ib_device_uevent, 672 }; 673 674 int ib_device_register_sysfs(struct ib_device *device) 675 { 676 struct class_device *class_dev = &device->class_dev; 677 int ret; 678 int i; 679 680 class_dev->class = &ib_class; 681 class_dev->class_data = device; 682 class_dev->dev = device->dma_device; 683 strlcpy(class_dev->class_id, device->name, BUS_ID_SIZE); 684 685 INIT_LIST_HEAD(&device->port_list); 686 687 ret = class_device_register(class_dev); 688 if (ret) 689 goto err; 690 691 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 692 ret = class_device_create_file(class_dev, ib_class_attributes[i]); 693 if (ret) 694 goto err_unregister; 695 } 696 697 device->ports_parent.parent = kobject_get(&class_dev->kobj); 698 if (!device->ports_parent.parent) { 699 ret = -EBUSY; 700 goto err_unregister; 701 } 702 ret = kobject_set_name(&device->ports_parent, "ports"); 703 if (ret) 704 goto err_put; 705 ret = kobject_register(&device->ports_parent); 706 if (ret) 707 goto err_put; 708 709 if (device->node_type == RDMA_NODE_IB_SWITCH) { 710 ret = add_port(device, 0); 711 if (ret) 712 goto err_put; 713 } else { 714 for (i = 1; i <= device->phys_port_cnt; ++i) { 715 ret = add_port(device, i); 716 if (ret) 717 goto err_put; 718 } 719 } 720 721 return 0; 722 723 err_put: 724 { 725 struct kobject *p, *t; 726 struct ib_port *port; 727 728 list_for_each_entry_safe(p, t, &device->port_list, entry) { 729 list_del(&p->entry); 730 port = container_of(p, struct ib_port, kobj); 731 sysfs_remove_group(p, &pma_group); 732 sysfs_remove_group(p, &port->pkey_group); 733 sysfs_remove_group(p, &port->gid_group); 734 kobject_unregister(p); 735 } 736 } 737 738 kobject_put(&class_dev->kobj); 739 740 err_unregister: 741 class_device_unregister(class_dev); 742 743 err: 744 return ret; 745 } 746 747 void ib_device_unregister_sysfs(struct ib_device *device) 748 { 749 struct kobject *p, *t; 750 struct ib_port *port; 751 752 list_for_each_entry_safe(p, t, &device->port_list, entry) { 753 list_del(&p->entry); 754 port = container_of(p, struct ib_port, kobj); 755 sysfs_remove_group(p, &pma_group); 756 sysfs_remove_group(p, &port->pkey_group); 757 sysfs_remove_group(p, &port->gid_group); 758 kobject_unregister(p); 759 } 760 761 kobject_unregister(&device->ports_parent); 762 class_device_unregister(&device->class_dev); 763 } 764 765 int ib_sysfs_setup(void) 766 { 767 return class_register(&ib_class); 768 } 769 770 void ib_sysfs_cleanup(void) 771 { 772 class_unregister(&ib_class); 773 } 774