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 ssize_t port_attr_show(struct kobject *kobj, 70 struct attribute *attr, char *buf) 71 { 72 struct port_attribute *port_attr = 73 container_of(attr, struct port_attribute, attr); 74 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 75 76 if (!port_attr->show) 77 return -EIO; 78 79 return port_attr->show(p, port_attr, buf); 80 } 81 82 static const struct sysfs_ops port_sysfs_ops = { 83 .show = port_attr_show 84 }; 85 86 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, 87 char *buf) 88 { 89 struct ib_port_attr attr; 90 ssize_t ret; 91 92 static const char *state_name[] = { 93 [IB_PORT_NOP] = "NOP", 94 [IB_PORT_DOWN] = "DOWN", 95 [IB_PORT_INIT] = "INIT", 96 [IB_PORT_ARMED] = "ARMED", 97 [IB_PORT_ACTIVE] = "ACTIVE", 98 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 99 }; 100 101 ret = ib_query_port(p->ibdev, p->port_num, &attr); 102 if (ret) 103 return ret; 104 105 return sprintf(buf, "%d: %s\n", attr.state, 106 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 107 state_name[attr.state] : "UNKNOWN"); 108 } 109 110 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 111 char *buf) 112 { 113 struct ib_port_attr attr; 114 ssize_t ret; 115 116 ret = ib_query_port(p->ibdev, p->port_num, &attr); 117 if (ret) 118 return ret; 119 120 return sprintf(buf, "0x%x\n", attr.lid); 121 } 122 123 static ssize_t lid_mask_count_show(struct ib_port *p, 124 struct port_attribute *unused, 125 char *buf) 126 { 127 struct ib_port_attr attr; 128 ssize_t ret; 129 130 ret = ib_query_port(p->ibdev, p->port_num, &attr); 131 if (ret) 132 return ret; 133 134 return sprintf(buf, "%d\n", attr.lmc); 135 } 136 137 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, 138 char *buf) 139 { 140 struct ib_port_attr attr; 141 ssize_t ret; 142 143 ret = ib_query_port(p->ibdev, p->port_num, &attr); 144 if (ret) 145 return ret; 146 147 return sprintf(buf, "0x%x\n", attr.sm_lid); 148 } 149 150 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, 151 char *buf) 152 { 153 struct ib_port_attr attr; 154 ssize_t ret; 155 156 ret = ib_query_port(p->ibdev, p->port_num, &attr); 157 if (ret) 158 return ret; 159 160 return sprintf(buf, "%d\n", attr.sm_sl); 161 } 162 163 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 164 char *buf) 165 { 166 struct ib_port_attr attr; 167 ssize_t ret; 168 169 ret = ib_query_port(p->ibdev, p->port_num, &attr); 170 if (ret) 171 return ret; 172 173 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 174 } 175 176 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 177 char *buf) 178 { 179 struct ib_port_attr attr; 180 char *speed = ""; 181 int rate; 182 ssize_t ret; 183 184 ret = ib_query_port(p->ibdev, p->port_num, &attr); 185 if (ret) 186 return ret; 187 188 switch (attr.active_speed) { 189 case 2: speed = " DDR"; break; 190 case 4: speed = " QDR"; break; 191 } 192 193 rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed; 194 if (rate < 0) 195 return -EINVAL; 196 197 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 198 rate / 10, rate % 10 ? ".5" : "", 199 ib_width_enum_to_int(attr.active_width), speed); 200 } 201 202 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 203 char *buf) 204 { 205 struct ib_port_attr attr; 206 207 ssize_t ret; 208 209 ret = ib_query_port(p->ibdev, p->port_num, &attr); 210 if (ret) 211 return ret; 212 213 switch (attr.phys_state) { 214 case 1: return sprintf(buf, "1: Sleep\n"); 215 case 2: return sprintf(buf, "2: Polling\n"); 216 case 3: return sprintf(buf, "3: Disabled\n"); 217 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 218 case 5: return sprintf(buf, "5: LinkUp\n"); 219 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 220 case 7: return sprintf(buf, "7: Phy Test\n"); 221 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 222 } 223 } 224 225 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 226 char *buf) 227 { 228 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 229 case IB_LINK_LAYER_INFINIBAND: 230 return sprintf(buf, "%s\n", "InfiniBand"); 231 case IB_LINK_LAYER_ETHERNET: 232 return sprintf(buf, "%s\n", "Ethernet"); 233 default: 234 return sprintf(buf, "%s\n", "Unknown"); 235 } 236 } 237 238 static PORT_ATTR_RO(state); 239 static PORT_ATTR_RO(lid); 240 static PORT_ATTR_RO(lid_mask_count); 241 static PORT_ATTR_RO(sm_lid); 242 static PORT_ATTR_RO(sm_sl); 243 static PORT_ATTR_RO(cap_mask); 244 static PORT_ATTR_RO(rate); 245 static PORT_ATTR_RO(phys_state); 246 static PORT_ATTR_RO(link_layer); 247 248 static struct attribute *port_default_attrs[] = { 249 &port_attr_state.attr, 250 &port_attr_lid.attr, 251 &port_attr_lid_mask_count.attr, 252 &port_attr_sm_lid.attr, 253 &port_attr_sm_sl.attr, 254 &port_attr_cap_mask.attr, 255 &port_attr_rate.attr, 256 &port_attr_phys_state.attr, 257 &port_attr_link_layer.attr, 258 NULL 259 }; 260 261 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 262 char *buf) 263 { 264 struct port_table_attribute *tab_attr = 265 container_of(attr, struct port_table_attribute, attr); 266 union ib_gid gid; 267 ssize_t ret; 268 269 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid); 270 if (ret) 271 return ret; 272 273 return sprintf(buf, "%pI6\n", gid.raw); 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 sysfs_attr_init(&element->attr.attr); 480 481 tab_attr[i] = &element->attr.attr; 482 } 483 484 return tab_attr; 485 486 err: 487 while (--i >= 0) 488 kfree(tab_attr[i]); 489 kfree(tab_attr); 490 return NULL; 491 } 492 493 static int add_port(struct ib_device *device, int port_num, 494 int (*port_callback)(struct ib_device *, 495 u8, struct kobject *)) 496 { 497 struct ib_port *p; 498 struct ib_port_attr attr; 499 int i; 500 int ret; 501 502 ret = ib_query_port(device, port_num, &attr); 503 if (ret) 504 return ret; 505 506 p = kzalloc(sizeof *p, GFP_KERNEL); 507 if (!p) 508 return -ENOMEM; 509 510 p->ibdev = device; 511 p->port_num = port_num; 512 513 ret = kobject_init_and_add(&p->kobj, &port_type, 514 kobject_get(device->ports_parent), 515 "%d", port_num); 516 if (ret) 517 goto err_put; 518 519 ret = sysfs_create_group(&p->kobj, &pma_group); 520 if (ret) 521 goto err_put; 522 523 p->gid_group.name = "gids"; 524 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 525 if (!p->gid_group.attrs) 526 goto err_remove_pma; 527 528 ret = sysfs_create_group(&p->kobj, &p->gid_group); 529 if (ret) 530 goto err_free_gid; 531 532 p->pkey_group.name = "pkeys"; 533 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 534 attr.pkey_tbl_len); 535 if (!p->pkey_group.attrs) 536 goto err_remove_gid; 537 538 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 539 if (ret) 540 goto err_free_pkey; 541 542 if (port_callback) { 543 ret = port_callback(device, port_num, &p->kobj); 544 if (ret) 545 goto err_remove_pkey; 546 } 547 548 list_add_tail(&p->kobj.entry, &device->port_list); 549 550 kobject_uevent(&p->kobj, KOBJ_ADD); 551 return 0; 552 553 err_remove_pkey: 554 sysfs_remove_group(&p->kobj, &p->pkey_group); 555 556 err_free_pkey: 557 for (i = 0; i < attr.pkey_tbl_len; ++i) 558 kfree(p->pkey_group.attrs[i]); 559 560 kfree(p->pkey_group.attrs); 561 562 err_remove_gid: 563 sysfs_remove_group(&p->kobj, &p->gid_group); 564 565 err_free_gid: 566 for (i = 0; i < attr.gid_tbl_len; ++i) 567 kfree(p->gid_group.attrs[i]); 568 569 kfree(p->gid_group.attrs); 570 571 err_remove_pma: 572 sysfs_remove_group(&p->kobj, &pma_group); 573 574 err_put: 575 kobject_put(device->ports_parent); 576 kfree(p); 577 return ret; 578 } 579 580 static ssize_t show_node_type(struct device *device, 581 struct device_attribute *attr, char *buf) 582 { 583 struct ib_device *dev = container_of(device, struct ib_device, dev); 584 585 switch (dev->node_type) { 586 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 587 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 588 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 589 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 590 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 591 } 592 } 593 594 static ssize_t show_sys_image_guid(struct device *device, 595 struct device_attribute *dev_attr, char *buf) 596 { 597 struct ib_device *dev = container_of(device, struct ib_device, dev); 598 struct ib_device_attr attr; 599 ssize_t ret; 600 601 ret = ib_query_device(dev, &attr); 602 if (ret) 603 return ret; 604 605 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 606 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]), 607 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]), 608 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]), 609 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3])); 610 } 611 612 static ssize_t show_node_guid(struct device *device, 613 struct device_attribute *attr, char *buf) 614 { 615 struct ib_device *dev = container_of(device, struct ib_device, dev); 616 617 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 618 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 619 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 620 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 621 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 622 } 623 624 static ssize_t show_node_desc(struct device *device, 625 struct device_attribute *attr, char *buf) 626 { 627 struct ib_device *dev = container_of(device, struct ib_device, dev); 628 629 return sprintf(buf, "%.64s\n", dev->node_desc); 630 } 631 632 static ssize_t set_node_desc(struct device *device, 633 struct device_attribute *attr, 634 const char *buf, size_t count) 635 { 636 struct ib_device *dev = container_of(device, struct ib_device, dev); 637 struct ib_device_modify desc = {}; 638 int ret; 639 640 if (!dev->modify_device) 641 return -EIO; 642 643 memcpy(desc.node_desc, buf, min_t(int, count, 64)); 644 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 645 if (ret) 646 return ret; 647 648 return count; 649 } 650 651 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 652 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 653 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 654 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 655 656 static struct device_attribute *ib_class_attributes[] = { 657 &dev_attr_node_type, 658 &dev_attr_sys_image_guid, 659 &dev_attr_node_guid, 660 &dev_attr_node_desc 661 }; 662 663 static struct class ib_class = { 664 .name = "infiniband", 665 .dev_release = ib_device_release, 666 .dev_uevent = ib_device_uevent, 667 }; 668 669 /* Show a given an attribute in the statistics group */ 670 static ssize_t show_protocol_stat(const struct device *device, 671 struct device_attribute *attr, char *buf, 672 unsigned offset) 673 { 674 struct ib_device *dev = container_of(device, struct ib_device, dev); 675 union rdma_protocol_stats stats; 676 ssize_t ret; 677 678 ret = dev->get_protocol_stats(dev, &stats); 679 if (ret) 680 return ret; 681 682 return sprintf(buf, "%llu\n", 683 (unsigned long long) ((u64 *) &stats)[offset]); 684 } 685 686 /* generate a read-only iwarp statistics attribute */ 687 #define IW_STATS_ENTRY(name) \ 688 static ssize_t show_##name(struct device *device, \ 689 struct device_attribute *attr, char *buf) \ 690 { \ 691 return show_protocol_stat(device, attr, buf, \ 692 offsetof(struct iw_protocol_stats, name) / \ 693 sizeof (u64)); \ 694 } \ 695 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) 696 697 IW_STATS_ENTRY(ipInReceives); 698 IW_STATS_ENTRY(ipInHdrErrors); 699 IW_STATS_ENTRY(ipInTooBigErrors); 700 IW_STATS_ENTRY(ipInNoRoutes); 701 IW_STATS_ENTRY(ipInAddrErrors); 702 IW_STATS_ENTRY(ipInUnknownProtos); 703 IW_STATS_ENTRY(ipInTruncatedPkts); 704 IW_STATS_ENTRY(ipInDiscards); 705 IW_STATS_ENTRY(ipInDelivers); 706 IW_STATS_ENTRY(ipOutForwDatagrams); 707 IW_STATS_ENTRY(ipOutRequests); 708 IW_STATS_ENTRY(ipOutDiscards); 709 IW_STATS_ENTRY(ipOutNoRoutes); 710 IW_STATS_ENTRY(ipReasmTimeout); 711 IW_STATS_ENTRY(ipReasmReqds); 712 IW_STATS_ENTRY(ipReasmOKs); 713 IW_STATS_ENTRY(ipReasmFails); 714 IW_STATS_ENTRY(ipFragOKs); 715 IW_STATS_ENTRY(ipFragFails); 716 IW_STATS_ENTRY(ipFragCreates); 717 IW_STATS_ENTRY(ipInMcastPkts); 718 IW_STATS_ENTRY(ipOutMcastPkts); 719 IW_STATS_ENTRY(ipInBcastPkts); 720 IW_STATS_ENTRY(ipOutBcastPkts); 721 IW_STATS_ENTRY(tcpRtoAlgorithm); 722 IW_STATS_ENTRY(tcpRtoMin); 723 IW_STATS_ENTRY(tcpRtoMax); 724 IW_STATS_ENTRY(tcpMaxConn); 725 IW_STATS_ENTRY(tcpActiveOpens); 726 IW_STATS_ENTRY(tcpPassiveOpens); 727 IW_STATS_ENTRY(tcpAttemptFails); 728 IW_STATS_ENTRY(tcpEstabResets); 729 IW_STATS_ENTRY(tcpCurrEstab); 730 IW_STATS_ENTRY(tcpInSegs); 731 IW_STATS_ENTRY(tcpOutSegs); 732 IW_STATS_ENTRY(tcpRetransSegs); 733 IW_STATS_ENTRY(tcpInErrs); 734 IW_STATS_ENTRY(tcpOutRsts); 735 736 static struct attribute *iw_proto_stats_attrs[] = { 737 &dev_attr_ipInReceives.attr, 738 &dev_attr_ipInHdrErrors.attr, 739 &dev_attr_ipInTooBigErrors.attr, 740 &dev_attr_ipInNoRoutes.attr, 741 &dev_attr_ipInAddrErrors.attr, 742 &dev_attr_ipInUnknownProtos.attr, 743 &dev_attr_ipInTruncatedPkts.attr, 744 &dev_attr_ipInDiscards.attr, 745 &dev_attr_ipInDelivers.attr, 746 &dev_attr_ipOutForwDatagrams.attr, 747 &dev_attr_ipOutRequests.attr, 748 &dev_attr_ipOutDiscards.attr, 749 &dev_attr_ipOutNoRoutes.attr, 750 &dev_attr_ipReasmTimeout.attr, 751 &dev_attr_ipReasmReqds.attr, 752 &dev_attr_ipReasmOKs.attr, 753 &dev_attr_ipReasmFails.attr, 754 &dev_attr_ipFragOKs.attr, 755 &dev_attr_ipFragFails.attr, 756 &dev_attr_ipFragCreates.attr, 757 &dev_attr_ipInMcastPkts.attr, 758 &dev_attr_ipOutMcastPkts.attr, 759 &dev_attr_ipInBcastPkts.attr, 760 &dev_attr_ipOutBcastPkts.attr, 761 &dev_attr_tcpRtoAlgorithm.attr, 762 &dev_attr_tcpRtoMin.attr, 763 &dev_attr_tcpRtoMax.attr, 764 &dev_attr_tcpMaxConn.attr, 765 &dev_attr_tcpActiveOpens.attr, 766 &dev_attr_tcpPassiveOpens.attr, 767 &dev_attr_tcpAttemptFails.attr, 768 &dev_attr_tcpEstabResets.attr, 769 &dev_attr_tcpCurrEstab.attr, 770 &dev_attr_tcpInSegs.attr, 771 &dev_attr_tcpOutSegs.attr, 772 &dev_attr_tcpRetransSegs.attr, 773 &dev_attr_tcpInErrs.attr, 774 &dev_attr_tcpOutRsts.attr, 775 NULL 776 }; 777 778 static struct attribute_group iw_stats_group = { 779 .name = "proto_stats", 780 .attrs = iw_proto_stats_attrs, 781 }; 782 783 int ib_device_register_sysfs(struct ib_device *device, 784 int (*port_callback)(struct ib_device *, 785 u8, struct kobject *)) 786 { 787 struct device *class_dev = &device->dev; 788 int ret; 789 int i; 790 791 class_dev->class = &ib_class; 792 class_dev->parent = device->dma_device; 793 dev_set_name(class_dev, device->name); 794 dev_set_drvdata(class_dev, device); 795 796 INIT_LIST_HEAD(&device->port_list); 797 798 ret = device_register(class_dev); 799 if (ret) 800 goto err; 801 802 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 803 ret = device_create_file(class_dev, ib_class_attributes[i]); 804 if (ret) 805 goto err_unregister; 806 } 807 808 device->ports_parent = kobject_create_and_add("ports", 809 kobject_get(&class_dev->kobj)); 810 if (!device->ports_parent) { 811 ret = -ENOMEM; 812 goto err_put; 813 } 814 815 if (device->node_type == RDMA_NODE_IB_SWITCH) { 816 ret = add_port(device, 0, port_callback); 817 if (ret) 818 goto err_put; 819 } else { 820 for (i = 1; i <= device->phys_port_cnt; ++i) { 821 ret = add_port(device, i, port_callback); 822 if (ret) 823 goto err_put; 824 } 825 } 826 827 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) { 828 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group); 829 if (ret) 830 goto err_put; 831 } 832 833 return 0; 834 835 err_put: 836 { 837 struct kobject *p, *t; 838 struct ib_port *port; 839 840 list_for_each_entry_safe(p, t, &device->port_list, entry) { 841 list_del(&p->entry); 842 port = container_of(p, struct ib_port, kobj); 843 sysfs_remove_group(p, &pma_group); 844 sysfs_remove_group(p, &port->pkey_group); 845 sysfs_remove_group(p, &port->gid_group); 846 kobject_put(p); 847 } 848 } 849 850 kobject_put(&class_dev->kobj); 851 852 err_unregister: 853 device_unregister(class_dev); 854 855 err: 856 return ret; 857 } 858 859 void ib_device_unregister_sysfs(struct ib_device *device) 860 { 861 struct kobject *p, *t; 862 struct ib_port *port; 863 864 /* Hold kobject until ib_dealloc_device() */ 865 kobject_get(&device->dev.kobj); 866 867 list_for_each_entry_safe(p, t, &device->port_list, entry) { 868 list_del(&p->entry); 869 port = container_of(p, struct ib_port, kobj); 870 sysfs_remove_group(p, &pma_group); 871 sysfs_remove_group(p, &port->pkey_group); 872 sysfs_remove_group(p, &port->gid_group); 873 kobject_put(p); 874 } 875 876 kobject_put(device->ports_parent); 877 device_unregister(&device->dev); 878 } 879 880 int ib_sysfs_setup(void) 881 { 882 return class_register(&ib_class); 883 } 884 885 void ib_sysfs_cleanup(void) 886 { 887 class_unregister(&ib_class); 888 } 889