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