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/string.h> 39 40 #include <rdma/ib_mad.h> 41 42 struct ib_port { 43 struct kobject kobj; 44 struct ib_device *ibdev; 45 struct attribute_group gid_group; 46 struct attribute_group pkey_group; 47 u8 port_num; 48 }; 49 50 struct port_attribute { 51 struct attribute attr; 52 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); 53 ssize_t (*store)(struct ib_port *, struct port_attribute *, 54 const char *buf, size_t count); 55 }; 56 57 #define PORT_ATTR(_name, _mode, _show, _store) \ 58 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 59 60 #define PORT_ATTR_RO(_name) \ 61 struct port_attribute port_attr_##_name = __ATTR_RO(_name) 62 63 struct port_table_attribute { 64 struct port_attribute attr; 65 char name[8]; 66 int index; 67 }; 68 69 static inline int ibdev_is_alive(const struct ib_device *dev) 70 { 71 return dev->reg_state == IB_DEV_REGISTERED; 72 } 73 74 static ssize_t port_attr_show(struct kobject *kobj, 75 struct attribute *attr, char *buf) 76 { 77 struct port_attribute *port_attr = 78 container_of(attr, struct port_attribute, attr); 79 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 80 81 if (!port_attr->show) 82 return -EIO; 83 if (!ibdev_is_alive(p->ibdev)) 84 return -ENODEV; 85 86 return port_attr->show(p, port_attr, buf); 87 } 88 89 static struct sysfs_ops port_sysfs_ops = { 90 .show = port_attr_show 91 }; 92 93 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, 94 char *buf) 95 { 96 struct ib_port_attr attr; 97 ssize_t ret; 98 99 static const char *state_name[] = { 100 [IB_PORT_NOP] = "NOP", 101 [IB_PORT_DOWN] = "DOWN", 102 [IB_PORT_INIT] = "INIT", 103 [IB_PORT_ARMED] = "ARMED", 104 [IB_PORT_ACTIVE] = "ACTIVE", 105 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 106 }; 107 108 ret = ib_query_port(p->ibdev, p->port_num, &attr); 109 if (ret) 110 return ret; 111 112 return sprintf(buf, "%d: %s\n", attr.state, 113 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 114 state_name[attr.state] : "UNKNOWN"); 115 } 116 117 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 118 char *buf) 119 { 120 struct ib_port_attr attr; 121 ssize_t ret; 122 123 ret = ib_query_port(p->ibdev, p->port_num, &attr); 124 if (ret) 125 return ret; 126 127 return sprintf(buf, "0x%x\n", attr.lid); 128 } 129 130 static ssize_t lid_mask_count_show(struct ib_port *p, 131 struct port_attribute *unused, 132 char *buf) 133 { 134 struct ib_port_attr attr; 135 ssize_t ret; 136 137 ret = ib_query_port(p->ibdev, p->port_num, &attr); 138 if (ret) 139 return ret; 140 141 return sprintf(buf, "%d\n", attr.lmc); 142 } 143 144 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, 145 char *buf) 146 { 147 struct ib_port_attr attr; 148 ssize_t ret; 149 150 ret = ib_query_port(p->ibdev, p->port_num, &attr); 151 if (ret) 152 return ret; 153 154 return sprintf(buf, "0x%x\n", attr.sm_lid); 155 } 156 157 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, 158 char *buf) 159 { 160 struct ib_port_attr attr; 161 ssize_t ret; 162 163 ret = ib_query_port(p->ibdev, p->port_num, &attr); 164 if (ret) 165 return ret; 166 167 return sprintf(buf, "%d\n", attr.sm_sl); 168 } 169 170 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 171 char *buf) 172 { 173 struct ib_port_attr attr; 174 ssize_t ret; 175 176 ret = ib_query_port(p->ibdev, p->port_num, &attr); 177 if (ret) 178 return ret; 179 180 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 181 } 182 183 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 184 char *buf) 185 { 186 struct ib_port_attr attr; 187 char *speed = ""; 188 int rate; 189 ssize_t ret; 190 191 ret = ib_query_port(p->ibdev, p->port_num, &attr); 192 if (ret) 193 return ret; 194 195 switch (attr.active_speed) { 196 case 2: speed = " DDR"; break; 197 case 4: speed = " QDR"; break; 198 } 199 200 rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed; 201 if (rate < 0) 202 return -EINVAL; 203 204 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 205 rate / 10, rate % 10 ? ".5" : "", 206 ib_width_enum_to_int(attr.active_width), speed); 207 } 208 209 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 210 char *buf) 211 { 212 struct ib_port_attr attr; 213 214 ssize_t ret; 215 216 ret = ib_query_port(p->ibdev, p->port_num, &attr); 217 if (ret) 218 return ret; 219 220 switch (attr.phys_state) { 221 case 1: return sprintf(buf, "1: Sleep\n"); 222 case 2: return sprintf(buf, "2: Polling\n"); 223 case 3: return sprintf(buf, "3: Disabled\n"); 224 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 225 case 5: return sprintf(buf, "5: LinkUp\n"); 226 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 227 case 7: return sprintf(buf, "7: Phy Test\n"); 228 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 229 } 230 } 231 232 static PORT_ATTR_RO(state); 233 static PORT_ATTR_RO(lid); 234 static PORT_ATTR_RO(lid_mask_count); 235 static PORT_ATTR_RO(sm_lid); 236 static PORT_ATTR_RO(sm_sl); 237 static PORT_ATTR_RO(cap_mask); 238 static PORT_ATTR_RO(rate); 239 static PORT_ATTR_RO(phys_state); 240 241 static struct attribute *port_default_attrs[] = { 242 &port_attr_state.attr, 243 &port_attr_lid.attr, 244 &port_attr_lid_mask_count.attr, 245 &port_attr_sm_lid.attr, 246 &port_attr_sm_sl.attr, 247 &port_attr_cap_mask.attr, 248 &port_attr_rate.attr, 249 &port_attr_phys_state.attr, 250 NULL 251 }; 252 253 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 254 char *buf) 255 { 256 struct port_table_attribute *tab_attr = 257 container_of(attr, struct port_table_attribute, attr); 258 union ib_gid gid; 259 ssize_t ret; 260 261 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid); 262 if (ret) 263 return ret; 264 265 return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n", 266 be16_to_cpu(((__be16 *) gid.raw)[0]), 267 be16_to_cpu(((__be16 *) gid.raw)[1]), 268 be16_to_cpu(((__be16 *) gid.raw)[2]), 269 be16_to_cpu(((__be16 *) gid.raw)[3]), 270 be16_to_cpu(((__be16 *) gid.raw)[4]), 271 be16_to_cpu(((__be16 *) gid.raw)[5]), 272 be16_to_cpu(((__be16 *) gid.raw)[6]), 273 be16_to_cpu(((__be16 *) gid.raw)[7])); 274 } 275 276 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 277 char *buf) 278 { 279 struct port_table_attribute *tab_attr = 280 container_of(attr, struct port_table_attribute, attr); 281 u16 pkey; 282 ssize_t ret; 283 284 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 285 if (ret) 286 return ret; 287 288 return sprintf(buf, "0x%04x\n", pkey); 289 } 290 291 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 292 struct port_table_attribute port_pma_attr_##_name = { \ 293 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 294 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \ 295 } 296 297 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 298 char *buf) 299 { 300 struct port_table_attribute *tab_attr = 301 container_of(attr, struct port_table_attribute, attr); 302 int offset = tab_attr->index & 0xffff; 303 int width = (tab_attr->index >> 16) & 0xff; 304 struct ib_mad *in_mad = NULL; 305 struct ib_mad *out_mad = NULL; 306 ssize_t ret; 307 308 if (!p->ibdev->process_mad) 309 return sprintf(buf, "N/A (no PMA)\n"); 310 311 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 312 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 313 if (!in_mad || !out_mad) { 314 ret = -ENOMEM; 315 goto out; 316 } 317 318 in_mad->mad_hdr.base_version = 1; 319 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 320 in_mad->mad_hdr.class_version = 1; 321 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 322 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */ 323 324 in_mad->data[41] = p->port_num; /* PortSelect field */ 325 326 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY, 327 p->port_num, NULL, NULL, in_mad, out_mad) & 328 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 329 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 330 ret = -EINVAL; 331 goto out; 332 } 333 334 switch (width) { 335 case 4: 336 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >> 337 (4 - (offset % 8))) & 0xf); 338 break; 339 case 8: 340 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]); 341 break; 342 case 16: 343 ret = sprintf(buf, "%u\n", 344 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8))); 345 break; 346 case 32: 347 ret = sprintf(buf, "%u\n", 348 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8))); 349 break; 350 default: 351 ret = 0; 352 } 353 354 out: 355 kfree(in_mad); 356 kfree(out_mad); 357 358 return ret; 359 } 360 361 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 362 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 363 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 364 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 365 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 366 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 367 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 368 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 369 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 370 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 371 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 372 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 373 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 374 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 375 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 376 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 377 378 static struct attribute *pma_attrs[] = { 379 &port_pma_attr_symbol_error.attr.attr, 380 &port_pma_attr_link_error_recovery.attr.attr, 381 &port_pma_attr_link_downed.attr.attr, 382 &port_pma_attr_port_rcv_errors.attr.attr, 383 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 384 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 385 &port_pma_attr_port_xmit_discards.attr.attr, 386 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 387 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 388 &port_pma_attr_local_link_integrity_errors.attr.attr, 389 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 390 &port_pma_attr_VL15_dropped.attr.attr, 391 &port_pma_attr_port_xmit_data.attr.attr, 392 &port_pma_attr_port_rcv_data.attr.attr, 393 &port_pma_attr_port_xmit_packets.attr.attr, 394 &port_pma_attr_port_rcv_packets.attr.attr, 395 NULL 396 }; 397 398 static struct attribute_group pma_group = { 399 .name = "counters", 400 .attrs = pma_attrs 401 }; 402 403 static void ib_port_release(struct kobject *kobj) 404 { 405 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 406 struct attribute *a; 407 int i; 408 409 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 410 kfree(a); 411 412 kfree(p->gid_group.attrs); 413 414 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 415 kfree(a); 416 417 kfree(p->pkey_group.attrs); 418 419 kfree(p); 420 } 421 422 static struct kobj_type port_type = { 423 .release = ib_port_release, 424 .sysfs_ops = &port_sysfs_ops, 425 .default_attrs = port_default_attrs 426 }; 427 428 static void ib_device_release(struct device *device) 429 { 430 struct ib_device *dev = container_of(device, struct ib_device, dev); 431 432 kfree(dev); 433 } 434 435 static int ib_device_uevent(struct device *device, 436 struct kobj_uevent_env *env) 437 { 438 struct ib_device *dev = container_of(device, struct ib_device, dev); 439 440 if (add_uevent_var(env, "NAME=%s", dev->name)) 441 return -ENOMEM; 442 443 /* 444 * It would be nice to pass the node GUID with the event... 445 */ 446 447 return 0; 448 } 449 450 static struct attribute ** 451 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 452 struct port_attribute *, char *buf), 453 int len) 454 { 455 struct attribute **tab_attr; 456 struct port_table_attribute *element; 457 int i; 458 459 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 460 if (!tab_attr) 461 return NULL; 462 463 for (i = 0; i < len; i++) { 464 element = kzalloc(sizeof(struct port_table_attribute), 465 GFP_KERNEL); 466 if (!element) 467 goto err; 468 469 if (snprintf(element->name, sizeof(element->name), 470 "%d", i) >= sizeof(element->name)) { 471 kfree(element); 472 goto err; 473 } 474 475 element->attr.attr.name = element->name; 476 element->attr.attr.mode = S_IRUGO; 477 element->attr.show = show; 478 element->index = i; 479 480 tab_attr[i] = &element->attr.attr; 481 } 482 483 return tab_attr; 484 485 err: 486 while (--i >= 0) 487 kfree(tab_attr[i]); 488 kfree(tab_attr); 489 return NULL; 490 } 491 492 static int add_port(struct ib_device *device, int port_num) 493 { 494 struct ib_port *p; 495 struct ib_port_attr attr; 496 int i; 497 int ret; 498 499 ret = ib_query_port(device, port_num, &attr); 500 if (ret) 501 return ret; 502 503 p = kzalloc(sizeof *p, GFP_KERNEL); 504 if (!p) 505 return -ENOMEM; 506 507 p->ibdev = device; 508 p->port_num = port_num; 509 510 ret = kobject_init_and_add(&p->kobj, &port_type, 511 kobject_get(device->ports_parent), 512 "%d", port_num); 513 if (ret) 514 goto err_put; 515 516 ret = sysfs_create_group(&p->kobj, &pma_group); 517 if (ret) 518 goto err_put; 519 520 p->gid_group.name = "gids"; 521 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 522 if (!p->gid_group.attrs) 523 goto err_remove_pma; 524 525 ret = sysfs_create_group(&p->kobj, &p->gid_group); 526 if (ret) 527 goto err_free_gid; 528 529 p->pkey_group.name = "pkeys"; 530 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 531 attr.pkey_tbl_len); 532 if (!p->pkey_group.attrs) 533 goto err_remove_gid; 534 535 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 536 if (ret) 537 goto err_free_pkey; 538 539 list_add_tail(&p->kobj.entry, &device->port_list); 540 541 kobject_uevent(&p->kobj, KOBJ_ADD); 542 return 0; 543 544 err_free_pkey: 545 for (i = 0; i < attr.pkey_tbl_len; ++i) 546 kfree(p->pkey_group.attrs[i]); 547 548 kfree(p->pkey_group.attrs); 549 550 err_remove_gid: 551 sysfs_remove_group(&p->kobj, &p->gid_group); 552 553 err_free_gid: 554 for (i = 0; i < attr.gid_tbl_len; ++i) 555 kfree(p->gid_group.attrs[i]); 556 557 kfree(p->gid_group.attrs); 558 559 err_remove_pma: 560 sysfs_remove_group(&p->kobj, &pma_group); 561 562 err_put: 563 kobject_put(device->ports_parent); 564 kfree(p); 565 return ret; 566 } 567 568 static ssize_t show_node_type(struct device *device, 569 struct device_attribute *attr, char *buf) 570 { 571 struct ib_device *dev = container_of(device, struct ib_device, dev); 572 573 if (!ibdev_is_alive(dev)) 574 return -ENODEV; 575 576 switch (dev->node_type) { 577 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 578 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 579 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 580 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 581 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 582 } 583 } 584 585 static ssize_t show_sys_image_guid(struct device *device, 586 struct device_attribute *dev_attr, char *buf) 587 { 588 struct ib_device *dev = container_of(device, struct ib_device, dev); 589 struct ib_device_attr attr; 590 ssize_t ret; 591 592 if (!ibdev_is_alive(dev)) 593 return -ENODEV; 594 595 ret = ib_query_device(dev, &attr); 596 if (ret) 597 return ret; 598 599 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 600 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]), 601 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]), 602 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]), 603 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3])); 604 } 605 606 static ssize_t show_node_guid(struct device *device, 607 struct device_attribute *attr, char *buf) 608 { 609 struct ib_device *dev = container_of(device, struct ib_device, dev); 610 611 if (!ibdev_is_alive(dev)) 612 return -ENODEV; 613 614 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 615 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 616 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 617 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 618 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 619 } 620 621 static ssize_t show_node_desc(struct device *device, 622 struct device_attribute *attr, char *buf) 623 { 624 struct ib_device *dev = container_of(device, struct ib_device, dev); 625 626 return sprintf(buf, "%.64s\n", dev->node_desc); 627 } 628 629 static ssize_t set_node_desc(struct device *device, 630 struct device_attribute *attr, 631 const char *buf, size_t count) 632 { 633 struct ib_device *dev = container_of(device, struct ib_device, dev); 634 struct ib_device_modify desc = {}; 635 int ret; 636 637 if (!dev->modify_device) 638 return -EIO; 639 640 memcpy(desc.node_desc, buf, min_t(int, count, 64)); 641 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 642 if (ret) 643 return ret; 644 645 return count; 646 } 647 648 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 649 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 650 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 651 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 652 653 static struct device_attribute *ib_class_attributes[] = { 654 &dev_attr_node_type, 655 &dev_attr_sys_image_guid, 656 &dev_attr_node_guid, 657 &dev_attr_node_desc 658 }; 659 660 static struct class ib_class = { 661 .name = "infiniband", 662 .dev_release = ib_device_release, 663 .dev_uevent = ib_device_uevent, 664 }; 665 666 /* Show a given an attribute in the statistics group */ 667 static ssize_t show_protocol_stat(const struct device *device, 668 struct device_attribute *attr, char *buf, 669 unsigned offset) 670 { 671 struct ib_device *dev = container_of(device, struct ib_device, dev); 672 union rdma_protocol_stats stats; 673 ssize_t ret; 674 675 ret = dev->get_protocol_stats(dev, &stats); 676 if (ret) 677 return ret; 678 679 return sprintf(buf, "%llu\n", 680 (unsigned long long) ((u64 *) &stats)[offset]); 681 } 682 683 /* generate a read-only iwarp statistics attribute */ 684 #define IW_STATS_ENTRY(name) \ 685 static ssize_t show_##name(struct device *device, \ 686 struct device_attribute *attr, char *buf) \ 687 { \ 688 return show_protocol_stat(device, attr, buf, \ 689 offsetof(struct iw_protocol_stats, name) / \ 690 sizeof (u64)); \ 691 } \ 692 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) 693 694 IW_STATS_ENTRY(ipInReceives); 695 IW_STATS_ENTRY(ipInHdrErrors); 696 IW_STATS_ENTRY(ipInTooBigErrors); 697 IW_STATS_ENTRY(ipInNoRoutes); 698 IW_STATS_ENTRY(ipInAddrErrors); 699 IW_STATS_ENTRY(ipInUnknownProtos); 700 IW_STATS_ENTRY(ipInTruncatedPkts); 701 IW_STATS_ENTRY(ipInDiscards); 702 IW_STATS_ENTRY(ipInDelivers); 703 IW_STATS_ENTRY(ipOutForwDatagrams); 704 IW_STATS_ENTRY(ipOutRequests); 705 IW_STATS_ENTRY(ipOutDiscards); 706 IW_STATS_ENTRY(ipOutNoRoutes); 707 IW_STATS_ENTRY(ipReasmTimeout); 708 IW_STATS_ENTRY(ipReasmReqds); 709 IW_STATS_ENTRY(ipReasmOKs); 710 IW_STATS_ENTRY(ipReasmFails); 711 IW_STATS_ENTRY(ipFragOKs); 712 IW_STATS_ENTRY(ipFragFails); 713 IW_STATS_ENTRY(ipFragCreates); 714 IW_STATS_ENTRY(ipInMcastPkts); 715 IW_STATS_ENTRY(ipOutMcastPkts); 716 IW_STATS_ENTRY(ipInBcastPkts); 717 IW_STATS_ENTRY(ipOutBcastPkts); 718 IW_STATS_ENTRY(tcpRtoAlgorithm); 719 IW_STATS_ENTRY(tcpRtoMin); 720 IW_STATS_ENTRY(tcpRtoMax); 721 IW_STATS_ENTRY(tcpMaxConn); 722 IW_STATS_ENTRY(tcpActiveOpens); 723 IW_STATS_ENTRY(tcpPassiveOpens); 724 IW_STATS_ENTRY(tcpAttemptFails); 725 IW_STATS_ENTRY(tcpEstabResets); 726 IW_STATS_ENTRY(tcpCurrEstab); 727 IW_STATS_ENTRY(tcpInSegs); 728 IW_STATS_ENTRY(tcpOutSegs); 729 IW_STATS_ENTRY(tcpRetransSegs); 730 IW_STATS_ENTRY(tcpInErrs); 731 IW_STATS_ENTRY(tcpOutRsts); 732 733 static struct attribute *iw_proto_stats_attrs[] = { 734 &dev_attr_ipInReceives.attr, 735 &dev_attr_ipInHdrErrors.attr, 736 &dev_attr_ipInTooBigErrors.attr, 737 &dev_attr_ipInNoRoutes.attr, 738 &dev_attr_ipInAddrErrors.attr, 739 &dev_attr_ipInUnknownProtos.attr, 740 &dev_attr_ipInTruncatedPkts.attr, 741 &dev_attr_ipInDiscards.attr, 742 &dev_attr_ipInDelivers.attr, 743 &dev_attr_ipOutForwDatagrams.attr, 744 &dev_attr_ipOutRequests.attr, 745 &dev_attr_ipOutDiscards.attr, 746 &dev_attr_ipOutNoRoutes.attr, 747 &dev_attr_ipReasmTimeout.attr, 748 &dev_attr_ipReasmReqds.attr, 749 &dev_attr_ipReasmOKs.attr, 750 &dev_attr_ipReasmFails.attr, 751 &dev_attr_ipFragOKs.attr, 752 &dev_attr_ipFragFails.attr, 753 &dev_attr_ipFragCreates.attr, 754 &dev_attr_ipInMcastPkts.attr, 755 &dev_attr_ipOutMcastPkts.attr, 756 &dev_attr_ipInBcastPkts.attr, 757 &dev_attr_ipOutBcastPkts.attr, 758 &dev_attr_tcpRtoAlgorithm.attr, 759 &dev_attr_tcpRtoMin.attr, 760 &dev_attr_tcpRtoMax.attr, 761 &dev_attr_tcpMaxConn.attr, 762 &dev_attr_tcpActiveOpens.attr, 763 &dev_attr_tcpPassiveOpens.attr, 764 &dev_attr_tcpAttemptFails.attr, 765 &dev_attr_tcpEstabResets.attr, 766 &dev_attr_tcpCurrEstab.attr, 767 &dev_attr_tcpInSegs.attr, 768 &dev_attr_tcpOutSegs.attr, 769 &dev_attr_tcpRetransSegs.attr, 770 &dev_attr_tcpInErrs.attr, 771 &dev_attr_tcpOutRsts.attr, 772 NULL 773 }; 774 775 static struct attribute_group iw_stats_group = { 776 .name = "proto_stats", 777 .attrs = iw_proto_stats_attrs, 778 }; 779 780 int ib_device_register_sysfs(struct ib_device *device) 781 { 782 struct device *class_dev = &device->dev; 783 int ret; 784 int i; 785 786 class_dev->class = &ib_class; 787 class_dev->driver_data = device; 788 class_dev->parent = device->dma_device; 789 strlcpy(class_dev->bus_id, device->name, BUS_ID_SIZE); 790 791 INIT_LIST_HEAD(&device->port_list); 792 793 ret = device_register(class_dev); 794 if (ret) 795 goto err; 796 797 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 798 ret = device_create_file(class_dev, ib_class_attributes[i]); 799 if (ret) 800 goto err_unregister; 801 } 802 803 device->ports_parent = kobject_create_and_add("ports", 804 kobject_get(&class_dev->kobj)); 805 if (!device->ports_parent) { 806 ret = -ENOMEM; 807 goto err_put; 808 } 809 810 if (device->node_type == RDMA_NODE_IB_SWITCH) { 811 ret = add_port(device, 0); 812 if (ret) 813 goto err_put; 814 } else { 815 for (i = 1; i <= device->phys_port_cnt; ++i) { 816 ret = add_port(device, i); 817 if (ret) 818 goto err_put; 819 } 820 } 821 822 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) { 823 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group); 824 if (ret) 825 goto err_put; 826 } 827 828 return 0; 829 830 err_put: 831 { 832 struct kobject *p, *t; 833 struct ib_port *port; 834 835 list_for_each_entry_safe(p, t, &device->port_list, entry) { 836 list_del(&p->entry); 837 port = container_of(p, struct ib_port, kobj); 838 sysfs_remove_group(p, &pma_group); 839 sysfs_remove_group(p, &port->pkey_group); 840 sysfs_remove_group(p, &port->gid_group); 841 kobject_put(p); 842 } 843 } 844 845 kobject_put(&class_dev->kobj); 846 847 err_unregister: 848 device_unregister(class_dev); 849 850 err: 851 return ret; 852 } 853 854 void ib_device_unregister_sysfs(struct ib_device *device) 855 { 856 struct kobject *p, *t; 857 struct ib_port *port; 858 859 list_for_each_entry_safe(p, t, &device->port_list, entry) { 860 list_del(&p->entry); 861 port = container_of(p, struct ib_port, kobj); 862 sysfs_remove_group(p, &pma_group); 863 sysfs_remove_group(p, &port->pkey_group); 864 sysfs_remove_group(p, &port->gid_group); 865 kobject_put(p); 866 } 867 868 kobject_put(device->ports_parent); 869 device_unregister(&device->dev); 870 } 871 872 int ib_sysfs_setup(void) 873 { 874 return class_register(&ib_class); 875 } 876 877 void ib_sysfs_cleanup(void) 878 { 879 class_unregister(&ib_class); 880 } 881