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 = -1; /* in deci-Gb/sec */ 183 ssize_t ret; 184 185 ret = ib_query_port(p->ibdev, p->port_num, &attr); 186 if (ret) 187 return ret; 188 189 switch (attr.active_speed) { 190 case IB_SPEED_SDR: 191 rate = 25; 192 break; 193 case IB_SPEED_DDR: 194 speed = " DDR"; 195 rate = 50; 196 break; 197 case IB_SPEED_QDR: 198 speed = " QDR"; 199 rate = 100; 200 break; 201 case IB_SPEED_FDR10: 202 speed = " FDR10"; 203 rate = 100; 204 break; 205 case IB_SPEED_FDR: 206 speed = " FDR"; 207 rate = 140; 208 break; 209 case IB_SPEED_EDR: 210 speed = " EDR"; 211 rate = 250; 212 break; 213 } 214 215 rate *= ib_width_enum_to_int(attr.active_width); 216 if (rate < 0) 217 return -EINVAL; 218 219 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 220 rate / 10, rate % 10 ? ".5" : "", 221 ib_width_enum_to_int(attr.active_width), speed); 222 } 223 224 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 225 char *buf) 226 { 227 struct ib_port_attr attr; 228 229 ssize_t ret; 230 231 ret = ib_query_port(p->ibdev, p->port_num, &attr); 232 if (ret) 233 return ret; 234 235 switch (attr.phys_state) { 236 case 1: return sprintf(buf, "1: Sleep\n"); 237 case 2: return sprintf(buf, "2: Polling\n"); 238 case 3: return sprintf(buf, "3: Disabled\n"); 239 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 240 case 5: return sprintf(buf, "5: LinkUp\n"); 241 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 242 case 7: return sprintf(buf, "7: Phy Test\n"); 243 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 244 } 245 } 246 247 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 248 char *buf) 249 { 250 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 251 case IB_LINK_LAYER_INFINIBAND: 252 return sprintf(buf, "%s\n", "InfiniBand"); 253 case IB_LINK_LAYER_ETHERNET: 254 return sprintf(buf, "%s\n", "Ethernet"); 255 default: 256 return sprintf(buf, "%s\n", "Unknown"); 257 } 258 } 259 260 static PORT_ATTR_RO(state); 261 static PORT_ATTR_RO(lid); 262 static PORT_ATTR_RO(lid_mask_count); 263 static PORT_ATTR_RO(sm_lid); 264 static PORT_ATTR_RO(sm_sl); 265 static PORT_ATTR_RO(cap_mask); 266 static PORT_ATTR_RO(rate); 267 static PORT_ATTR_RO(phys_state); 268 static PORT_ATTR_RO(link_layer); 269 270 static struct attribute *port_default_attrs[] = { 271 &port_attr_state.attr, 272 &port_attr_lid.attr, 273 &port_attr_lid_mask_count.attr, 274 &port_attr_sm_lid.attr, 275 &port_attr_sm_sl.attr, 276 &port_attr_cap_mask.attr, 277 &port_attr_rate.attr, 278 &port_attr_phys_state.attr, 279 &port_attr_link_layer.attr, 280 NULL 281 }; 282 283 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 284 char *buf) 285 { 286 struct port_table_attribute *tab_attr = 287 container_of(attr, struct port_table_attribute, attr); 288 union ib_gid gid; 289 ssize_t ret; 290 291 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid); 292 if (ret) 293 return ret; 294 295 return sprintf(buf, "%pI6\n", gid.raw); 296 } 297 298 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 299 char *buf) 300 { 301 struct port_table_attribute *tab_attr = 302 container_of(attr, struct port_table_attribute, attr); 303 u16 pkey; 304 ssize_t ret; 305 306 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 307 if (ret) 308 return ret; 309 310 return sprintf(buf, "0x%04x\n", pkey); 311 } 312 313 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 314 struct port_table_attribute port_pma_attr_##_name = { \ 315 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 316 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \ 317 } 318 319 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 320 char *buf) 321 { 322 struct port_table_attribute *tab_attr = 323 container_of(attr, struct port_table_attribute, attr); 324 int offset = tab_attr->index & 0xffff; 325 int width = (tab_attr->index >> 16) & 0xff; 326 struct ib_mad *in_mad = NULL; 327 struct ib_mad *out_mad = NULL; 328 ssize_t ret; 329 330 if (!p->ibdev->process_mad) 331 return sprintf(buf, "N/A (no PMA)\n"); 332 333 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 334 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 335 if (!in_mad || !out_mad) { 336 ret = -ENOMEM; 337 goto out; 338 } 339 340 in_mad->mad_hdr.base_version = 1; 341 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 342 in_mad->mad_hdr.class_version = 1; 343 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 344 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */ 345 346 in_mad->data[41] = p->port_num; /* PortSelect field */ 347 348 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY, 349 p->port_num, NULL, NULL, in_mad, out_mad) & 350 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 351 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 352 ret = -EINVAL; 353 goto out; 354 } 355 356 switch (width) { 357 case 4: 358 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >> 359 (4 - (offset % 8))) & 0xf); 360 break; 361 case 8: 362 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]); 363 break; 364 case 16: 365 ret = sprintf(buf, "%u\n", 366 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8))); 367 break; 368 case 32: 369 ret = sprintf(buf, "%u\n", 370 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8))); 371 break; 372 default: 373 ret = 0; 374 } 375 376 out: 377 kfree(in_mad); 378 kfree(out_mad); 379 380 return ret; 381 } 382 383 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 384 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 385 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 386 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 387 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 388 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 389 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 390 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 391 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 392 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 393 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 394 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 395 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 396 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 397 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 398 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 399 400 static struct attribute *pma_attrs[] = { 401 &port_pma_attr_symbol_error.attr.attr, 402 &port_pma_attr_link_error_recovery.attr.attr, 403 &port_pma_attr_link_downed.attr.attr, 404 &port_pma_attr_port_rcv_errors.attr.attr, 405 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 406 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 407 &port_pma_attr_port_xmit_discards.attr.attr, 408 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 409 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 410 &port_pma_attr_local_link_integrity_errors.attr.attr, 411 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 412 &port_pma_attr_VL15_dropped.attr.attr, 413 &port_pma_attr_port_xmit_data.attr.attr, 414 &port_pma_attr_port_rcv_data.attr.attr, 415 &port_pma_attr_port_xmit_packets.attr.attr, 416 &port_pma_attr_port_rcv_packets.attr.attr, 417 NULL 418 }; 419 420 static struct attribute_group pma_group = { 421 .name = "counters", 422 .attrs = pma_attrs 423 }; 424 425 static void ib_port_release(struct kobject *kobj) 426 { 427 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 428 struct attribute *a; 429 int i; 430 431 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 432 kfree(a); 433 434 kfree(p->gid_group.attrs); 435 436 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 437 kfree(a); 438 439 kfree(p->pkey_group.attrs); 440 441 kfree(p); 442 } 443 444 static struct kobj_type port_type = { 445 .release = ib_port_release, 446 .sysfs_ops = &port_sysfs_ops, 447 .default_attrs = port_default_attrs 448 }; 449 450 static void ib_device_release(struct device *device) 451 { 452 struct ib_device *dev = container_of(device, struct ib_device, dev); 453 454 kfree(dev); 455 } 456 457 static int ib_device_uevent(struct device *device, 458 struct kobj_uevent_env *env) 459 { 460 struct ib_device *dev = container_of(device, struct ib_device, dev); 461 462 if (add_uevent_var(env, "NAME=%s", dev->name)) 463 return -ENOMEM; 464 465 /* 466 * It would be nice to pass the node GUID with the event... 467 */ 468 469 return 0; 470 } 471 472 static struct attribute ** 473 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 474 struct port_attribute *, char *buf), 475 int len) 476 { 477 struct attribute **tab_attr; 478 struct port_table_attribute *element; 479 int i; 480 481 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 482 if (!tab_attr) 483 return NULL; 484 485 for (i = 0; i < len; i++) { 486 element = kzalloc(sizeof(struct port_table_attribute), 487 GFP_KERNEL); 488 if (!element) 489 goto err; 490 491 if (snprintf(element->name, sizeof(element->name), 492 "%d", i) >= sizeof(element->name)) { 493 kfree(element); 494 goto err; 495 } 496 497 element->attr.attr.name = element->name; 498 element->attr.attr.mode = S_IRUGO; 499 element->attr.show = show; 500 element->index = i; 501 sysfs_attr_init(&element->attr.attr); 502 503 tab_attr[i] = &element->attr.attr; 504 } 505 506 return tab_attr; 507 508 err: 509 while (--i >= 0) 510 kfree(tab_attr[i]); 511 kfree(tab_attr); 512 return NULL; 513 } 514 515 static int add_port(struct ib_device *device, int port_num, 516 int (*port_callback)(struct ib_device *, 517 u8, struct kobject *)) 518 { 519 struct ib_port *p; 520 struct ib_port_attr attr; 521 int i; 522 int ret; 523 524 ret = ib_query_port(device, port_num, &attr); 525 if (ret) 526 return ret; 527 528 p = kzalloc(sizeof *p, GFP_KERNEL); 529 if (!p) 530 return -ENOMEM; 531 532 p->ibdev = device; 533 p->port_num = port_num; 534 535 ret = kobject_init_and_add(&p->kobj, &port_type, 536 kobject_get(device->ports_parent), 537 "%d", port_num); 538 if (ret) 539 goto err_put; 540 541 ret = sysfs_create_group(&p->kobj, &pma_group); 542 if (ret) 543 goto err_put; 544 545 p->gid_group.name = "gids"; 546 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 547 if (!p->gid_group.attrs) 548 goto err_remove_pma; 549 550 ret = sysfs_create_group(&p->kobj, &p->gid_group); 551 if (ret) 552 goto err_free_gid; 553 554 p->pkey_group.name = "pkeys"; 555 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 556 attr.pkey_tbl_len); 557 if (!p->pkey_group.attrs) 558 goto err_remove_gid; 559 560 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 561 if (ret) 562 goto err_free_pkey; 563 564 if (port_callback) { 565 ret = port_callback(device, port_num, &p->kobj); 566 if (ret) 567 goto err_remove_pkey; 568 } 569 570 list_add_tail(&p->kobj.entry, &device->port_list); 571 572 kobject_uevent(&p->kobj, KOBJ_ADD); 573 return 0; 574 575 err_remove_pkey: 576 sysfs_remove_group(&p->kobj, &p->pkey_group); 577 578 err_free_pkey: 579 for (i = 0; i < attr.pkey_tbl_len; ++i) 580 kfree(p->pkey_group.attrs[i]); 581 582 kfree(p->pkey_group.attrs); 583 584 err_remove_gid: 585 sysfs_remove_group(&p->kobj, &p->gid_group); 586 587 err_free_gid: 588 for (i = 0; i < attr.gid_tbl_len; ++i) 589 kfree(p->gid_group.attrs[i]); 590 591 kfree(p->gid_group.attrs); 592 593 err_remove_pma: 594 sysfs_remove_group(&p->kobj, &pma_group); 595 596 err_put: 597 kobject_put(device->ports_parent); 598 kfree(p); 599 return ret; 600 } 601 602 static ssize_t show_node_type(struct device *device, 603 struct device_attribute *attr, char *buf) 604 { 605 struct ib_device *dev = container_of(device, struct ib_device, dev); 606 607 switch (dev->node_type) { 608 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 609 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 610 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 611 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 612 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 613 } 614 } 615 616 static ssize_t show_sys_image_guid(struct device *device, 617 struct device_attribute *dev_attr, char *buf) 618 { 619 struct ib_device *dev = container_of(device, struct ib_device, dev); 620 struct ib_device_attr attr; 621 ssize_t ret; 622 623 ret = ib_query_device(dev, &attr); 624 if (ret) 625 return ret; 626 627 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 628 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]), 629 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]), 630 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]), 631 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3])); 632 } 633 634 static ssize_t show_node_guid(struct device *device, 635 struct device_attribute *attr, char *buf) 636 { 637 struct ib_device *dev = container_of(device, struct ib_device, dev); 638 639 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 640 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 641 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 642 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 643 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 644 } 645 646 static ssize_t show_node_desc(struct device *device, 647 struct device_attribute *attr, char *buf) 648 { 649 struct ib_device *dev = container_of(device, struct ib_device, dev); 650 651 return sprintf(buf, "%.64s\n", dev->node_desc); 652 } 653 654 static ssize_t set_node_desc(struct device *device, 655 struct device_attribute *attr, 656 const char *buf, size_t count) 657 { 658 struct ib_device *dev = container_of(device, struct ib_device, dev); 659 struct ib_device_modify desc = {}; 660 int ret; 661 662 if (!dev->modify_device) 663 return -EIO; 664 665 memcpy(desc.node_desc, buf, min_t(int, count, 64)); 666 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 667 if (ret) 668 return ret; 669 670 return count; 671 } 672 673 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 674 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 675 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 676 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 677 678 static struct device_attribute *ib_class_attributes[] = { 679 &dev_attr_node_type, 680 &dev_attr_sys_image_guid, 681 &dev_attr_node_guid, 682 &dev_attr_node_desc 683 }; 684 685 static struct class ib_class = { 686 .name = "infiniband", 687 .dev_release = ib_device_release, 688 .dev_uevent = ib_device_uevent, 689 }; 690 691 /* Show a given an attribute in the statistics group */ 692 static ssize_t show_protocol_stat(const struct device *device, 693 struct device_attribute *attr, char *buf, 694 unsigned offset) 695 { 696 struct ib_device *dev = container_of(device, struct ib_device, dev); 697 union rdma_protocol_stats stats; 698 ssize_t ret; 699 700 ret = dev->get_protocol_stats(dev, &stats); 701 if (ret) 702 return ret; 703 704 return sprintf(buf, "%llu\n", 705 (unsigned long long) ((u64 *) &stats)[offset]); 706 } 707 708 /* generate a read-only iwarp statistics attribute */ 709 #define IW_STATS_ENTRY(name) \ 710 static ssize_t show_##name(struct device *device, \ 711 struct device_attribute *attr, char *buf) \ 712 { \ 713 return show_protocol_stat(device, attr, buf, \ 714 offsetof(struct iw_protocol_stats, name) / \ 715 sizeof (u64)); \ 716 } \ 717 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) 718 719 IW_STATS_ENTRY(ipInReceives); 720 IW_STATS_ENTRY(ipInHdrErrors); 721 IW_STATS_ENTRY(ipInTooBigErrors); 722 IW_STATS_ENTRY(ipInNoRoutes); 723 IW_STATS_ENTRY(ipInAddrErrors); 724 IW_STATS_ENTRY(ipInUnknownProtos); 725 IW_STATS_ENTRY(ipInTruncatedPkts); 726 IW_STATS_ENTRY(ipInDiscards); 727 IW_STATS_ENTRY(ipInDelivers); 728 IW_STATS_ENTRY(ipOutForwDatagrams); 729 IW_STATS_ENTRY(ipOutRequests); 730 IW_STATS_ENTRY(ipOutDiscards); 731 IW_STATS_ENTRY(ipOutNoRoutes); 732 IW_STATS_ENTRY(ipReasmTimeout); 733 IW_STATS_ENTRY(ipReasmReqds); 734 IW_STATS_ENTRY(ipReasmOKs); 735 IW_STATS_ENTRY(ipReasmFails); 736 IW_STATS_ENTRY(ipFragOKs); 737 IW_STATS_ENTRY(ipFragFails); 738 IW_STATS_ENTRY(ipFragCreates); 739 IW_STATS_ENTRY(ipInMcastPkts); 740 IW_STATS_ENTRY(ipOutMcastPkts); 741 IW_STATS_ENTRY(ipInBcastPkts); 742 IW_STATS_ENTRY(ipOutBcastPkts); 743 IW_STATS_ENTRY(tcpRtoAlgorithm); 744 IW_STATS_ENTRY(tcpRtoMin); 745 IW_STATS_ENTRY(tcpRtoMax); 746 IW_STATS_ENTRY(tcpMaxConn); 747 IW_STATS_ENTRY(tcpActiveOpens); 748 IW_STATS_ENTRY(tcpPassiveOpens); 749 IW_STATS_ENTRY(tcpAttemptFails); 750 IW_STATS_ENTRY(tcpEstabResets); 751 IW_STATS_ENTRY(tcpCurrEstab); 752 IW_STATS_ENTRY(tcpInSegs); 753 IW_STATS_ENTRY(tcpOutSegs); 754 IW_STATS_ENTRY(tcpRetransSegs); 755 IW_STATS_ENTRY(tcpInErrs); 756 IW_STATS_ENTRY(tcpOutRsts); 757 758 static struct attribute *iw_proto_stats_attrs[] = { 759 &dev_attr_ipInReceives.attr, 760 &dev_attr_ipInHdrErrors.attr, 761 &dev_attr_ipInTooBigErrors.attr, 762 &dev_attr_ipInNoRoutes.attr, 763 &dev_attr_ipInAddrErrors.attr, 764 &dev_attr_ipInUnknownProtos.attr, 765 &dev_attr_ipInTruncatedPkts.attr, 766 &dev_attr_ipInDiscards.attr, 767 &dev_attr_ipInDelivers.attr, 768 &dev_attr_ipOutForwDatagrams.attr, 769 &dev_attr_ipOutRequests.attr, 770 &dev_attr_ipOutDiscards.attr, 771 &dev_attr_ipOutNoRoutes.attr, 772 &dev_attr_ipReasmTimeout.attr, 773 &dev_attr_ipReasmReqds.attr, 774 &dev_attr_ipReasmOKs.attr, 775 &dev_attr_ipReasmFails.attr, 776 &dev_attr_ipFragOKs.attr, 777 &dev_attr_ipFragFails.attr, 778 &dev_attr_ipFragCreates.attr, 779 &dev_attr_ipInMcastPkts.attr, 780 &dev_attr_ipOutMcastPkts.attr, 781 &dev_attr_ipInBcastPkts.attr, 782 &dev_attr_ipOutBcastPkts.attr, 783 &dev_attr_tcpRtoAlgorithm.attr, 784 &dev_attr_tcpRtoMin.attr, 785 &dev_attr_tcpRtoMax.attr, 786 &dev_attr_tcpMaxConn.attr, 787 &dev_attr_tcpActiveOpens.attr, 788 &dev_attr_tcpPassiveOpens.attr, 789 &dev_attr_tcpAttemptFails.attr, 790 &dev_attr_tcpEstabResets.attr, 791 &dev_attr_tcpCurrEstab.attr, 792 &dev_attr_tcpInSegs.attr, 793 &dev_attr_tcpOutSegs.attr, 794 &dev_attr_tcpRetransSegs.attr, 795 &dev_attr_tcpInErrs.attr, 796 &dev_attr_tcpOutRsts.attr, 797 NULL 798 }; 799 800 static struct attribute_group iw_stats_group = { 801 .name = "proto_stats", 802 .attrs = iw_proto_stats_attrs, 803 }; 804 805 int ib_device_register_sysfs(struct ib_device *device, 806 int (*port_callback)(struct ib_device *, 807 u8, struct kobject *)) 808 { 809 struct device *class_dev = &device->dev; 810 int ret; 811 int i; 812 813 class_dev->class = &ib_class; 814 class_dev->parent = device->dma_device; 815 dev_set_name(class_dev, device->name); 816 dev_set_drvdata(class_dev, device); 817 818 INIT_LIST_HEAD(&device->port_list); 819 820 ret = device_register(class_dev); 821 if (ret) 822 goto err; 823 824 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 825 ret = device_create_file(class_dev, ib_class_attributes[i]); 826 if (ret) 827 goto err_unregister; 828 } 829 830 device->ports_parent = kobject_create_and_add("ports", 831 kobject_get(&class_dev->kobj)); 832 if (!device->ports_parent) { 833 ret = -ENOMEM; 834 goto err_put; 835 } 836 837 if (device->node_type == RDMA_NODE_IB_SWITCH) { 838 ret = add_port(device, 0, port_callback); 839 if (ret) 840 goto err_put; 841 } else { 842 for (i = 1; i <= device->phys_port_cnt; ++i) { 843 ret = add_port(device, i, port_callback); 844 if (ret) 845 goto err_put; 846 } 847 } 848 849 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) { 850 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group); 851 if (ret) 852 goto err_put; 853 } 854 855 return 0; 856 857 err_put: 858 { 859 struct kobject *p, *t; 860 struct ib_port *port; 861 862 list_for_each_entry_safe(p, t, &device->port_list, entry) { 863 list_del(&p->entry); 864 port = container_of(p, struct ib_port, kobj); 865 sysfs_remove_group(p, &pma_group); 866 sysfs_remove_group(p, &port->pkey_group); 867 sysfs_remove_group(p, &port->gid_group); 868 kobject_put(p); 869 } 870 } 871 872 kobject_put(&class_dev->kobj); 873 874 err_unregister: 875 device_unregister(class_dev); 876 877 err: 878 return ret; 879 } 880 881 void ib_device_unregister_sysfs(struct ib_device *device) 882 { 883 struct kobject *p, *t; 884 struct ib_port *port; 885 886 /* Hold kobject until ib_dealloc_device() */ 887 kobject_get(&device->dev.kobj); 888 889 list_for_each_entry_safe(p, t, &device->port_list, entry) { 890 list_del(&p->entry); 891 port = container_of(p, struct ib_port, kobj); 892 sysfs_remove_group(p, &pma_group); 893 sysfs_remove_group(p, &port->pkey_group); 894 sysfs_remove_group(p, &port->gid_group); 895 kobject_put(p); 896 } 897 898 kobject_put(device->ports_parent); 899 device_unregister(&device->dev); 900 } 901 902 int ib_sysfs_setup(void) 903 { 904 return class_register(&ib_class); 905 } 906 907 void ib_sysfs_cleanup(void) 908 { 909 class_unregister(&ib_class); 910 } 911