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 41 #include <rdma/ib_mad.h> 42 43 struct ib_port { 44 struct kobject kobj; 45 struct ib_device *ibdev; 46 struct attribute_group gid_group; 47 struct attribute_group pkey_group; 48 u8 port_num; 49 }; 50 51 struct port_attribute { 52 struct attribute attr; 53 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); 54 ssize_t (*store)(struct ib_port *, struct port_attribute *, 55 const char *buf, size_t count); 56 }; 57 58 #define PORT_ATTR(_name, _mode, _show, _store) \ 59 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 60 61 #define PORT_ATTR_RO(_name) \ 62 struct port_attribute port_attr_##_name = __ATTR_RO(_name) 63 64 struct port_table_attribute { 65 struct port_attribute attr; 66 char name[8]; 67 int index; 68 }; 69 70 static ssize_t port_attr_show(struct kobject *kobj, 71 struct attribute *attr, char *buf) 72 { 73 struct port_attribute *port_attr = 74 container_of(attr, struct port_attribute, attr); 75 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 76 77 if (!port_attr->show) 78 return -EIO; 79 80 return port_attr->show(p, port_attr, buf); 81 } 82 83 static const struct sysfs_ops port_sysfs_ops = { 84 .show = port_attr_show 85 }; 86 87 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, 88 char *buf) 89 { 90 struct ib_port_attr attr; 91 ssize_t ret; 92 93 static const char *state_name[] = { 94 [IB_PORT_NOP] = "NOP", 95 [IB_PORT_DOWN] = "DOWN", 96 [IB_PORT_INIT] = "INIT", 97 [IB_PORT_ARMED] = "ARMED", 98 [IB_PORT_ACTIVE] = "ACTIVE", 99 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 100 }; 101 102 ret = ib_query_port(p->ibdev, p->port_num, &attr); 103 if (ret) 104 return ret; 105 106 return sprintf(buf, "%d: %s\n", attr.state, 107 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 108 state_name[attr.state] : "UNKNOWN"); 109 } 110 111 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 112 char *buf) 113 { 114 struct ib_port_attr attr; 115 ssize_t ret; 116 117 ret = ib_query_port(p->ibdev, p->port_num, &attr); 118 if (ret) 119 return ret; 120 121 return sprintf(buf, "0x%x\n", attr.lid); 122 } 123 124 static ssize_t lid_mask_count_show(struct ib_port *p, 125 struct port_attribute *unused, 126 char *buf) 127 { 128 struct ib_port_attr attr; 129 ssize_t ret; 130 131 ret = ib_query_port(p->ibdev, p->port_num, &attr); 132 if (ret) 133 return ret; 134 135 return sprintf(buf, "%d\n", attr.lmc); 136 } 137 138 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, 139 char *buf) 140 { 141 struct ib_port_attr attr; 142 ssize_t ret; 143 144 ret = ib_query_port(p->ibdev, p->port_num, &attr); 145 if (ret) 146 return ret; 147 148 return sprintf(buf, "0x%x\n", attr.sm_lid); 149 } 150 151 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, 152 char *buf) 153 { 154 struct ib_port_attr attr; 155 ssize_t ret; 156 157 ret = ib_query_port(p->ibdev, p->port_num, &attr); 158 if (ret) 159 return ret; 160 161 return sprintf(buf, "%d\n", attr.sm_sl); 162 } 163 164 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 165 char *buf) 166 { 167 struct ib_port_attr attr; 168 ssize_t ret; 169 170 ret = ib_query_port(p->ibdev, p->port_num, &attr); 171 if (ret) 172 return ret; 173 174 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 175 } 176 177 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 178 char *buf) 179 { 180 struct ib_port_attr attr; 181 char *speed = ""; 182 int rate; 183 ssize_t ret; 184 185 ret = ib_query_port(p->ibdev, p->port_num, &attr); 186 if (ret) 187 return ret; 188 189 rate = (25 * attr.active_speed) / 10; 190 191 switch (attr.active_speed) { 192 case 2: 193 speed = " DDR"; 194 break; 195 case 4: 196 speed = " QDR"; 197 break; 198 case 8: 199 speed = " FDR10"; 200 rate = 10; 201 break; 202 case 16: 203 speed = " FDR"; 204 rate = 14; 205 break; 206 case 32: 207 speed = " EDR"; 208 rate = 25; 209 break; 210 } 211 212 rate *= ib_width_enum_to_int(attr.active_width); 213 if (rate < 0) 214 return -EINVAL; 215 216 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 217 rate, (attr.active_speed == 1) ? ".5" : "", 218 ib_width_enum_to_int(attr.active_width), speed); 219 } 220 221 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 222 char *buf) 223 { 224 struct ib_port_attr attr; 225 226 ssize_t ret; 227 228 ret = ib_query_port(p->ibdev, p->port_num, &attr); 229 if (ret) 230 return ret; 231 232 switch (attr.phys_state) { 233 case 1: return sprintf(buf, "1: Sleep\n"); 234 case 2: return sprintf(buf, "2: Polling\n"); 235 case 3: return sprintf(buf, "3: Disabled\n"); 236 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 237 case 5: return sprintf(buf, "5: LinkUp\n"); 238 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 239 case 7: return sprintf(buf, "7: Phy Test\n"); 240 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 241 } 242 } 243 244 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 245 char *buf) 246 { 247 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 248 case IB_LINK_LAYER_INFINIBAND: 249 return sprintf(buf, "%s\n", "InfiniBand"); 250 case IB_LINK_LAYER_ETHERNET: 251 return sprintf(buf, "%s\n", "Ethernet"); 252 default: 253 return sprintf(buf, "%s\n", "Unknown"); 254 } 255 } 256 257 static PORT_ATTR_RO(state); 258 static PORT_ATTR_RO(lid); 259 static PORT_ATTR_RO(lid_mask_count); 260 static PORT_ATTR_RO(sm_lid); 261 static PORT_ATTR_RO(sm_sl); 262 static PORT_ATTR_RO(cap_mask); 263 static PORT_ATTR_RO(rate); 264 static PORT_ATTR_RO(phys_state); 265 static PORT_ATTR_RO(link_layer); 266 267 static struct attribute *port_default_attrs[] = { 268 &port_attr_state.attr, 269 &port_attr_lid.attr, 270 &port_attr_lid_mask_count.attr, 271 &port_attr_sm_lid.attr, 272 &port_attr_sm_sl.attr, 273 &port_attr_cap_mask.attr, 274 &port_attr_rate.attr, 275 &port_attr_phys_state.attr, 276 &port_attr_link_layer.attr, 277 NULL 278 }; 279 280 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 281 char *buf) 282 { 283 struct port_table_attribute *tab_attr = 284 container_of(attr, struct port_table_attribute, attr); 285 union ib_gid gid; 286 ssize_t ret; 287 288 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid); 289 if (ret) 290 return ret; 291 292 return sprintf(buf, "%pI6\n", gid.raw); 293 } 294 295 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 296 char *buf) 297 { 298 struct port_table_attribute *tab_attr = 299 container_of(attr, struct port_table_attribute, attr); 300 u16 pkey; 301 ssize_t ret; 302 303 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 304 if (ret) 305 return ret; 306 307 return sprintf(buf, "0x%04x\n", pkey); 308 } 309 310 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 311 struct port_table_attribute port_pma_attr_##_name = { \ 312 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 313 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \ 314 } 315 316 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 317 char *buf) 318 { 319 struct port_table_attribute *tab_attr = 320 container_of(attr, struct port_table_attribute, attr); 321 int offset = tab_attr->index & 0xffff; 322 int width = (tab_attr->index >> 16) & 0xff; 323 struct ib_mad *in_mad = NULL; 324 struct ib_mad *out_mad = NULL; 325 ssize_t ret; 326 327 if (!p->ibdev->process_mad) 328 return sprintf(buf, "N/A (no PMA)\n"); 329 330 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 331 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 332 if (!in_mad || !out_mad) { 333 ret = -ENOMEM; 334 goto out; 335 } 336 337 in_mad->mad_hdr.base_version = 1; 338 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 339 in_mad->mad_hdr.class_version = 1; 340 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 341 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */ 342 343 in_mad->data[41] = p->port_num; /* PortSelect field */ 344 345 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY, 346 p->port_num, NULL, NULL, in_mad, out_mad) & 347 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 348 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 349 ret = -EINVAL; 350 goto out; 351 } 352 353 switch (width) { 354 case 4: 355 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >> 356 (4 - (offset % 8))) & 0xf); 357 break; 358 case 8: 359 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]); 360 break; 361 case 16: 362 ret = sprintf(buf, "%u\n", 363 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8))); 364 break; 365 case 32: 366 ret = sprintf(buf, "%u\n", 367 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8))); 368 break; 369 default: 370 ret = 0; 371 } 372 373 out: 374 kfree(in_mad); 375 kfree(out_mad); 376 377 return ret; 378 } 379 380 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 381 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 382 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 383 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 384 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 385 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 386 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 387 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 388 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 389 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 390 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 391 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 392 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 393 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 394 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 395 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 396 397 static struct attribute *pma_attrs[] = { 398 &port_pma_attr_symbol_error.attr.attr, 399 &port_pma_attr_link_error_recovery.attr.attr, 400 &port_pma_attr_link_downed.attr.attr, 401 &port_pma_attr_port_rcv_errors.attr.attr, 402 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 403 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 404 &port_pma_attr_port_xmit_discards.attr.attr, 405 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 406 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 407 &port_pma_attr_local_link_integrity_errors.attr.attr, 408 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 409 &port_pma_attr_VL15_dropped.attr.attr, 410 &port_pma_attr_port_xmit_data.attr.attr, 411 &port_pma_attr_port_rcv_data.attr.attr, 412 &port_pma_attr_port_xmit_packets.attr.attr, 413 &port_pma_attr_port_rcv_packets.attr.attr, 414 NULL 415 }; 416 417 static struct attribute_group pma_group = { 418 .name = "counters", 419 .attrs = pma_attrs 420 }; 421 422 static void ib_port_release(struct kobject *kobj) 423 { 424 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 425 struct attribute *a; 426 int i; 427 428 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 429 kfree(a); 430 431 kfree(p->gid_group.attrs); 432 433 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 434 kfree(a); 435 436 kfree(p->pkey_group.attrs); 437 438 kfree(p); 439 } 440 441 static struct kobj_type port_type = { 442 .release = ib_port_release, 443 .sysfs_ops = &port_sysfs_ops, 444 .default_attrs = port_default_attrs 445 }; 446 447 static void ib_device_release(struct device *device) 448 { 449 struct ib_device *dev = container_of(device, struct ib_device, dev); 450 451 kfree(dev); 452 } 453 454 static int ib_device_uevent(struct device *device, 455 struct kobj_uevent_env *env) 456 { 457 struct ib_device *dev = container_of(device, struct ib_device, dev); 458 459 if (add_uevent_var(env, "NAME=%s", dev->name)) 460 return -ENOMEM; 461 462 /* 463 * It would be nice to pass the node GUID with the event... 464 */ 465 466 return 0; 467 } 468 469 static struct attribute ** 470 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 471 struct port_attribute *, char *buf), 472 int len) 473 { 474 struct attribute **tab_attr; 475 struct port_table_attribute *element; 476 int i; 477 478 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 479 if (!tab_attr) 480 return NULL; 481 482 for (i = 0; i < len; i++) { 483 element = kzalloc(sizeof(struct port_table_attribute), 484 GFP_KERNEL); 485 if (!element) 486 goto err; 487 488 if (snprintf(element->name, sizeof(element->name), 489 "%d", i) >= sizeof(element->name)) { 490 kfree(element); 491 goto err; 492 } 493 494 element->attr.attr.name = element->name; 495 element->attr.attr.mode = S_IRUGO; 496 element->attr.show = show; 497 element->index = i; 498 sysfs_attr_init(&element->attr.attr); 499 500 tab_attr[i] = &element->attr.attr; 501 } 502 503 return tab_attr; 504 505 err: 506 while (--i >= 0) 507 kfree(tab_attr[i]); 508 kfree(tab_attr); 509 return NULL; 510 } 511 512 static int add_port(struct ib_device *device, int port_num, 513 int (*port_callback)(struct ib_device *, 514 u8, struct kobject *)) 515 { 516 struct ib_port *p; 517 struct ib_port_attr attr; 518 int i; 519 int ret; 520 521 ret = ib_query_port(device, port_num, &attr); 522 if (ret) 523 return ret; 524 525 p = kzalloc(sizeof *p, GFP_KERNEL); 526 if (!p) 527 return -ENOMEM; 528 529 p->ibdev = device; 530 p->port_num = port_num; 531 532 ret = kobject_init_and_add(&p->kobj, &port_type, 533 kobject_get(device->ports_parent), 534 "%d", port_num); 535 if (ret) 536 goto err_put; 537 538 ret = sysfs_create_group(&p->kobj, &pma_group); 539 if (ret) 540 goto err_put; 541 542 p->gid_group.name = "gids"; 543 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 544 if (!p->gid_group.attrs) 545 goto err_remove_pma; 546 547 ret = sysfs_create_group(&p->kobj, &p->gid_group); 548 if (ret) 549 goto err_free_gid; 550 551 p->pkey_group.name = "pkeys"; 552 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 553 attr.pkey_tbl_len); 554 if (!p->pkey_group.attrs) 555 goto err_remove_gid; 556 557 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 558 if (ret) 559 goto err_free_pkey; 560 561 if (port_callback) { 562 ret = port_callback(device, port_num, &p->kobj); 563 if (ret) 564 goto err_remove_pkey; 565 } 566 567 list_add_tail(&p->kobj.entry, &device->port_list); 568 569 kobject_uevent(&p->kobj, KOBJ_ADD); 570 return 0; 571 572 err_remove_pkey: 573 sysfs_remove_group(&p->kobj, &p->pkey_group); 574 575 err_free_pkey: 576 for (i = 0; i < attr.pkey_tbl_len; ++i) 577 kfree(p->pkey_group.attrs[i]); 578 579 kfree(p->pkey_group.attrs); 580 581 err_remove_gid: 582 sysfs_remove_group(&p->kobj, &p->gid_group); 583 584 err_free_gid: 585 for (i = 0; i < attr.gid_tbl_len; ++i) 586 kfree(p->gid_group.attrs[i]); 587 588 kfree(p->gid_group.attrs); 589 590 err_remove_pma: 591 sysfs_remove_group(&p->kobj, &pma_group); 592 593 err_put: 594 kobject_put(device->ports_parent); 595 kfree(p); 596 return ret; 597 } 598 599 static ssize_t show_node_type(struct device *device, 600 struct device_attribute *attr, char *buf) 601 { 602 struct ib_device *dev = container_of(device, struct ib_device, dev); 603 604 switch (dev->node_type) { 605 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 606 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 607 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 608 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 609 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 610 } 611 } 612 613 static ssize_t show_sys_image_guid(struct device *device, 614 struct device_attribute *dev_attr, char *buf) 615 { 616 struct ib_device *dev = container_of(device, struct ib_device, dev); 617 struct ib_device_attr attr; 618 ssize_t ret; 619 620 ret = ib_query_device(dev, &attr); 621 if (ret) 622 return ret; 623 624 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 625 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]), 626 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]), 627 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]), 628 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3])); 629 } 630 631 static ssize_t show_node_guid(struct device *device, 632 struct device_attribute *attr, char *buf) 633 { 634 struct ib_device *dev = container_of(device, struct ib_device, dev); 635 636 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 637 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 638 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 639 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 640 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 641 } 642 643 static ssize_t show_node_desc(struct device *device, 644 struct device_attribute *attr, char *buf) 645 { 646 struct ib_device *dev = container_of(device, struct ib_device, dev); 647 648 return sprintf(buf, "%.64s\n", dev->node_desc); 649 } 650 651 static ssize_t set_node_desc(struct device *device, 652 struct device_attribute *attr, 653 const char *buf, size_t count) 654 { 655 struct ib_device *dev = container_of(device, struct ib_device, dev); 656 struct ib_device_modify desc = {}; 657 int ret; 658 659 if (!dev->modify_device) 660 return -EIO; 661 662 memcpy(desc.node_desc, buf, min_t(int, count, 64)); 663 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 664 if (ret) 665 return ret; 666 667 return count; 668 } 669 670 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 671 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 672 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 673 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 674 675 static struct device_attribute *ib_class_attributes[] = { 676 &dev_attr_node_type, 677 &dev_attr_sys_image_guid, 678 &dev_attr_node_guid, 679 &dev_attr_node_desc 680 }; 681 682 static struct class ib_class = { 683 .name = "infiniband", 684 .dev_release = ib_device_release, 685 .dev_uevent = ib_device_uevent, 686 }; 687 688 /* Show a given an attribute in the statistics group */ 689 static ssize_t show_protocol_stat(const struct device *device, 690 struct device_attribute *attr, char *buf, 691 unsigned offset) 692 { 693 struct ib_device *dev = container_of(device, struct ib_device, dev); 694 union rdma_protocol_stats stats; 695 ssize_t ret; 696 697 ret = dev->get_protocol_stats(dev, &stats); 698 if (ret) 699 return ret; 700 701 return sprintf(buf, "%llu\n", 702 (unsigned long long) ((u64 *) &stats)[offset]); 703 } 704 705 /* generate a read-only iwarp statistics attribute */ 706 #define IW_STATS_ENTRY(name) \ 707 static ssize_t show_##name(struct device *device, \ 708 struct device_attribute *attr, char *buf) \ 709 { \ 710 return show_protocol_stat(device, attr, buf, \ 711 offsetof(struct iw_protocol_stats, name) / \ 712 sizeof (u64)); \ 713 } \ 714 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) 715 716 IW_STATS_ENTRY(ipInReceives); 717 IW_STATS_ENTRY(ipInHdrErrors); 718 IW_STATS_ENTRY(ipInTooBigErrors); 719 IW_STATS_ENTRY(ipInNoRoutes); 720 IW_STATS_ENTRY(ipInAddrErrors); 721 IW_STATS_ENTRY(ipInUnknownProtos); 722 IW_STATS_ENTRY(ipInTruncatedPkts); 723 IW_STATS_ENTRY(ipInDiscards); 724 IW_STATS_ENTRY(ipInDelivers); 725 IW_STATS_ENTRY(ipOutForwDatagrams); 726 IW_STATS_ENTRY(ipOutRequests); 727 IW_STATS_ENTRY(ipOutDiscards); 728 IW_STATS_ENTRY(ipOutNoRoutes); 729 IW_STATS_ENTRY(ipReasmTimeout); 730 IW_STATS_ENTRY(ipReasmReqds); 731 IW_STATS_ENTRY(ipReasmOKs); 732 IW_STATS_ENTRY(ipReasmFails); 733 IW_STATS_ENTRY(ipFragOKs); 734 IW_STATS_ENTRY(ipFragFails); 735 IW_STATS_ENTRY(ipFragCreates); 736 IW_STATS_ENTRY(ipInMcastPkts); 737 IW_STATS_ENTRY(ipOutMcastPkts); 738 IW_STATS_ENTRY(ipInBcastPkts); 739 IW_STATS_ENTRY(ipOutBcastPkts); 740 IW_STATS_ENTRY(tcpRtoAlgorithm); 741 IW_STATS_ENTRY(tcpRtoMin); 742 IW_STATS_ENTRY(tcpRtoMax); 743 IW_STATS_ENTRY(tcpMaxConn); 744 IW_STATS_ENTRY(tcpActiveOpens); 745 IW_STATS_ENTRY(tcpPassiveOpens); 746 IW_STATS_ENTRY(tcpAttemptFails); 747 IW_STATS_ENTRY(tcpEstabResets); 748 IW_STATS_ENTRY(tcpCurrEstab); 749 IW_STATS_ENTRY(tcpInSegs); 750 IW_STATS_ENTRY(tcpOutSegs); 751 IW_STATS_ENTRY(tcpRetransSegs); 752 IW_STATS_ENTRY(tcpInErrs); 753 IW_STATS_ENTRY(tcpOutRsts); 754 755 static struct attribute *iw_proto_stats_attrs[] = { 756 &dev_attr_ipInReceives.attr, 757 &dev_attr_ipInHdrErrors.attr, 758 &dev_attr_ipInTooBigErrors.attr, 759 &dev_attr_ipInNoRoutes.attr, 760 &dev_attr_ipInAddrErrors.attr, 761 &dev_attr_ipInUnknownProtos.attr, 762 &dev_attr_ipInTruncatedPkts.attr, 763 &dev_attr_ipInDiscards.attr, 764 &dev_attr_ipInDelivers.attr, 765 &dev_attr_ipOutForwDatagrams.attr, 766 &dev_attr_ipOutRequests.attr, 767 &dev_attr_ipOutDiscards.attr, 768 &dev_attr_ipOutNoRoutes.attr, 769 &dev_attr_ipReasmTimeout.attr, 770 &dev_attr_ipReasmReqds.attr, 771 &dev_attr_ipReasmOKs.attr, 772 &dev_attr_ipReasmFails.attr, 773 &dev_attr_ipFragOKs.attr, 774 &dev_attr_ipFragFails.attr, 775 &dev_attr_ipFragCreates.attr, 776 &dev_attr_ipInMcastPkts.attr, 777 &dev_attr_ipOutMcastPkts.attr, 778 &dev_attr_ipInBcastPkts.attr, 779 &dev_attr_ipOutBcastPkts.attr, 780 &dev_attr_tcpRtoAlgorithm.attr, 781 &dev_attr_tcpRtoMin.attr, 782 &dev_attr_tcpRtoMax.attr, 783 &dev_attr_tcpMaxConn.attr, 784 &dev_attr_tcpActiveOpens.attr, 785 &dev_attr_tcpPassiveOpens.attr, 786 &dev_attr_tcpAttemptFails.attr, 787 &dev_attr_tcpEstabResets.attr, 788 &dev_attr_tcpCurrEstab.attr, 789 &dev_attr_tcpInSegs.attr, 790 &dev_attr_tcpOutSegs.attr, 791 &dev_attr_tcpRetransSegs.attr, 792 &dev_attr_tcpInErrs.attr, 793 &dev_attr_tcpOutRsts.attr, 794 NULL 795 }; 796 797 static struct attribute_group iw_stats_group = { 798 .name = "proto_stats", 799 .attrs = iw_proto_stats_attrs, 800 }; 801 802 int ib_device_register_sysfs(struct ib_device *device, 803 int (*port_callback)(struct ib_device *, 804 u8, struct kobject *)) 805 { 806 struct device *class_dev = &device->dev; 807 int ret; 808 int i; 809 810 class_dev->class = &ib_class; 811 class_dev->parent = device->dma_device; 812 dev_set_name(class_dev, device->name); 813 dev_set_drvdata(class_dev, device); 814 815 INIT_LIST_HEAD(&device->port_list); 816 817 ret = device_register(class_dev); 818 if (ret) 819 goto err; 820 821 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 822 ret = device_create_file(class_dev, ib_class_attributes[i]); 823 if (ret) 824 goto err_unregister; 825 } 826 827 device->ports_parent = kobject_create_and_add("ports", 828 kobject_get(&class_dev->kobj)); 829 if (!device->ports_parent) { 830 ret = -ENOMEM; 831 goto err_put; 832 } 833 834 if (device->node_type == RDMA_NODE_IB_SWITCH) { 835 ret = add_port(device, 0, port_callback); 836 if (ret) 837 goto err_put; 838 } else { 839 for (i = 1; i <= device->phys_port_cnt; ++i) { 840 ret = add_port(device, i, port_callback); 841 if (ret) 842 goto err_put; 843 } 844 } 845 846 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) { 847 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group); 848 if (ret) 849 goto err_put; 850 } 851 852 return 0; 853 854 err_put: 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 } 868 869 kobject_put(&class_dev->kobj); 870 871 err_unregister: 872 device_unregister(class_dev); 873 874 err: 875 return ret; 876 } 877 878 void ib_device_unregister_sysfs(struct ib_device *device) 879 { 880 struct kobject *p, *t; 881 struct ib_port *port; 882 883 /* Hold kobject until ib_dealloc_device() */ 884 kobject_get(&device->dev.kobj); 885 886 list_for_each_entry_safe(p, t, &device->port_list, entry) { 887 list_del(&p->entry); 888 port = container_of(p, struct ib_port, kobj); 889 sysfs_remove_group(p, &pma_group); 890 sysfs_remove_group(p, &port->pkey_group); 891 sysfs_remove_group(p, &port->gid_group); 892 kobject_put(p); 893 } 894 895 kobject_put(device->ports_parent); 896 device_unregister(&device->dev); 897 } 898 899 int ib_sysfs_setup(void) 900 { 901 return class_register(&ib_class); 902 } 903 904 void ib_sysfs_cleanup(void) 905 { 906 class_unregister(&ib_class); 907 } 908