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; /* 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_DDR: 191 speed = " DDR"; 192 rate = 50; 193 break; 194 case IB_SPEED_QDR: 195 speed = " QDR"; 196 rate = 100; 197 break; 198 case IB_SPEED_FDR10: 199 speed = " FDR10"; 200 rate = 100; 201 break; 202 case IB_SPEED_FDR: 203 speed = " FDR"; 204 rate = 140; 205 break; 206 case IB_SPEED_EDR: 207 speed = " EDR"; 208 rate = 250; 209 break; 210 case IB_SPEED_SDR: 211 default: /* default to SDR for invalid rates */ 212 rate = 25; 213 break; 214 } 215 216 rate *= ib_width_enum_to_int(attr.active_width); 217 if (rate < 0) 218 return -EINVAL; 219 220 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 221 rate / 10, rate % 10 ? ".5" : "", 222 ib_width_enum_to_int(attr.active_width), speed); 223 } 224 225 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 226 char *buf) 227 { 228 struct ib_port_attr attr; 229 230 ssize_t ret; 231 232 ret = ib_query_port(p->ibdev, p->port_num, &attr); 233 if (ret) 234 return ret; 235 236 switch (attr.phys_state) { 237 case 1: return sprintf(buf, "1: Sleep\n"); 238 case 2: return sprintf(buf, "2: Polling\n"); 239 case 3: return sprintf(buf, "3: Disabled\n"); 240 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 241 case 5: return sprintf(buf, "5: LinkUp\n"); 242 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 243 case 7: return sprintf(buf, "7: Phy Test\n"); 244 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 245 } 246 } 247 248 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 249 char *buf) 250 { 251 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 252 case IB_LINK_LAYER_INFINIBAND: 253 return sprintf(buf, "%s\n", "InfiniBand"); 254 case IB_LINK_LAYER_ETHERNET: 255 return sprintf(buf, "%s\n", "Ethernet"); 256 default: 257 return sprintf(buf, "%s\n", "Unknown"); 258 } 259 } 260 261 static PORT_ATTR_RO(state); 262 static PORT_ATTR_RO(lid); 263 static PORT_ATTR_RO(lid_mask_count); 264 static PORT_ATTR_RO(sm_lid); 265 static PORT_ATTR_RO(sm_sl); 266 static PORT_ATTR_RO(cap_mask); 267 static PORT_ATTR_RO(rate); 268 static PORT_ATTR_RO(phys_state); 269 static PORT_ATTR_RO(link_layer); 270 271 static struct attribute *port_default_attrs[] = { 272 &port_attr_state.attr, 273 &port_attr_lid.attr, 274 &port_attr_lid_mask_count.attr, 275 &port_attr_sm_lid.attr, 276 &port_attr_sm_sl.attr, 277 &port_attr_cap_mask.attr, 278 &port_attr_rate.attr, 279 &port_attr_phys_state.attr, 280 &port_attr_link_layer.attr, 281 NULL 282 }; 283 284 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 285 char *buf) 286 { 287 struct port_table_attribute *tab_attr = 288 container_of(attr, struct port_table_attribute, attr); 289 union ib_gid gid; 290 ssize_t ret; 291 292 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid); 293 if (ret) 294 return ret; 295 296 return sprintf(buf, "%pI6\n", gid.raw); 297 } 298 299 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 300 char *buf) 301 { 302 struct port_table_attribute *tab_attr = 303 container_of(attr, struct port_table_attribute, attr); 304 u16 pkey; 305 ssize_t ret; 306 307 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 308 if (ret) 309 return ret; 310 311 return sprintf(buf, "0x%04x\n", pkey); 312 } 313 314 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 315 struct port_table_attribute port_pma_attr_##_name = { \ 316 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 317 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \ 318 } 319 320 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 321 char *buf) 322 { 323 struct port_table_attribute *tab_attr = 324 container_of(attr, struct port_table_attribute, attr); 325 int offset = tab_attr->index & 0xffff; 326 int width = (tab_attr->index >> 16) & 0xff; 327 struct ib_mad *in_mad = NULL; 328 struct ib_mad *out_mad = NULL; 329 ssize_t ret; 330 331 if (!p->ibdev->process_mad) 332 return sprintf(buf, "N/A (no PMA)\n"); 333 334 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 335 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 336 if (!in_mad || !out_mad) { 337 ret = -ENOMEM; 338 goto out; 339 } 340 341 in_mad->mad_hdr.base_version = 1; 342 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 343 in_mad->mad_hdr.class_version = 1; 344 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 345 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */ 346 347 in_mad->data[41] = p->port_num; /* PortSelect field */ 348 349 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY, 350 p->port_num, NULL, NULL, in_mad, out_mad) & 351 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 352 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 353 ret = -EINVAL; 354 goto out; 355 } 356 357 switch (width) { 358 case 4: 359 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >> 360 (4 - (offset % 8))) & 0xf); 361 break; 362 case 8: 363 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]); 364 break; 365 case 16: 366 ret = sprintf(buf, "%u\n", 367 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8))); 368 break; 369 case 32: 370 ret = sprintf(buf, "%u\n", 371 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8))); 372 break; 373 default: 374 ret = 0; 375 } 376 377 out: 378 kfree(in_mad); 379 kfree(out_mad); 380 381 return ret; 382 } 383 384 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 385 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 386 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 387 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 388 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 389 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 390 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 391 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 392 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 393 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 394 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 395 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 396 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 397 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 398 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 399 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 400 401 static struct attribute *pma_attrs[] = { 402 &port_pma_attr_symbol_error.attr.attr, 403 &port_pma_attr_link_error_recovery.attr.attr, 404 &port_pma_attr_link_downed.attr.attr, 405 &port_pma_attr_port_rcv_errors.attr.attr, 406 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 407 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 408 &port_pma_attr_port_xmit_discards.attr.attr, 409 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 410 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 411 &port_pma_attr_local_link_integrity_errors.attr.attr, 412 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 413 &port_pma_attr_VL15_dropped.attr.attr, 414 &port_pma_attr_port_xmit_data.attr.attr, 415 &port_pma_attr_port_rcv_data.attr.attr, 416 &port_pma_attr_port_xmit_packets.attr.attr, 417 &port_pma_attr_port_rcv_packets.attr.attr, 418 NULL 419 }; 420 421 static struct attribute_group pma_group = { 422 .name = "counters", 423 .attrs = pma_attrs 424 }; 425 426 static void ib_port_release(struct kobject *kobj) 427 { 428 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 429 struct attribute *a; 430 int i; 431 432 if (p->gid_group.attrs) { 433 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 434 kfree(a); 435 436 kfree(p->gid_group.attrs); 437 } 438 439 if (p->pkey_group.attrs) { 440 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 441 kfree(a); 442 443 kfree(p->pkey_group.attrs); 444 } 445 446 kfree(p); 447 } 448 449 static struct kobj_type port_type = { 450 .release = ib_port_release, 451 .sysfs_ops = &port_sysfs_ops, 452 .default_attrs = port_default_attrs 453 }; 454 455 static void ib_device_release(struct device *device) 456 { 457 struct ib_device *dev = container_of(device, struct ib_device, dev); 458 459 kfree(dev); 460 } 461 462 static int ib_device_uevent(struct device *device, 463 struct kobj_uevent_env *env) 464 { 465 struct ib_device *dev = container_of(device, struct ib_device, dev); 466 467 if (add_uevent_var(env, "NAME=%s", dev->name)) 468 return -ENOMEM; 469 470 /* 471 * It would be nice to pass the node GUID with the event... 472 */ 473 474 return 0; 475 } 476 477 static struct attribute ** 478 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 479 struct port_attribute *, char *buf), 480 int len) 481 { 482 struct attribute **tab_attr; 483 struct port_table_attribute *element; 484 int i; 485 486 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 487 if (!tab_attr) 488 return NULL; 489 490 for (i = 0; i < len; i++) { 491 element = kzalloc(sizeof(struct port_table_attribute), 492 GFP_KERNEL); 493 if (!element) 494 goto err; 495 496 if (snprintf(element->name, sizeof(element->name), 497 "%d", i) >= sizeof(element->name)) { 498 kfree(element); 499 goto err; 500 } 501 502 element->attr.attr.name = element->name; 503 element->attr.attr.mode = S_IRUGO; 504 element->attr.show = show; 505 element->index = i; 506 sysfs_attr_init(&element->attr.attr); 507 508 tab_attr[i] = &element->attr.attr; 509 } 510 511 return tab_attr; 512 513 err: 514 while (--i >= 0) 515 kfree(tab_attr[i]); 516 kfree(tab_attr); 517 return NULL; 518 } 519 520 static int add_port(struct ib_device *device, int port_num, 521 int (*port_callback)(struct ib_device *, 522 u8, struct kobject *)) 523 { 524 struct ib_port *p; 525 struct ib_port_attr attr; 526 int i; 527 int ret; 528 529 ret = ib_query_port(device, port_num, &attr); 530 if (ret) 531 return ret; 532 533 p = kzalloc(sizeof *p, GFP_KERNEL); 534 if (!p) 535 return -ENOMEM; 536 537 p->ibdev = device; 538 p->port_num = port_num; 539 540 ret = kobject_init_and_add(&p->kobj, &port_type, 541 device->ports_parent, 542 "%d", port_num); 543 if (ret) { 544 kfree(p); 545 return ret; 546 } 547 548 ret = sysfs_create_group(&p->kobj, &pma_group); 549 if (ret) 550 goto err_put; 551 552 p->gid_group.name = "gids"; 553 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 554 if (!p->gid_group.attrs) { 555 ret = -ENOMEM; 556 goto err_remove_pma; 557 } 558 559 ret = sysfs_create_group(&p->kobj, &p->gid_group); 560 if (ret) 561 goto err_free_gid; 562 563 p->pkey_group.name = "pkeys"; 564 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 565 attr.pkey_tbl_len); 566 if (!p->pkey_group.attrs) { 567 ret = -ENOMEM; 568 goto err_remove_gid; 569 } 570 571 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 572 if (ret) 573 goto err_free_pkey; 574 575 if (port_callback) { 576 ret = port_callback(device, port_num, &p->kobj); 577 if (ret) 578 goto err_remove_pkey; 579 } 580 581 list_add_tail(&p->kobj.entry, &device->port_list); 582 583 kobject_uevent(&p->kobj, KOBJ_ADD); 584 return 0; 585 586 err_remove_pkey: 587 sysfs_remove_group(&p->kobj, &p->pkey_group); 588 589 err_free_pkey: 590 for (i = 0; i < attr.pkey_tbl_len; ++i) 591 kfree(p->pkey_group.attrs[i]); 592 593 kfree(p->pkey_group.attrs); 594 p->pkey_group.attrs = NULL; 595 596 err_remove_gid: 597 sysfs_remove_group(&p->kobj, &p->gid_group); 598 599 err_free_gid: 600 for (i = 0; i < attr.gid_tbl_len; ++i) 601 kfree(p->gid_group.attrs[i]); 602 603 kfree(p->gid_group.attrs); 604 p->gid_group.attrs = NULL; 605 606 err_remove_pma: 607 sysfs_remove_group(&p->kobj, &pma_group); 608 609 err_put: 610 kobject_put(&p->kobj); 611 return ret; 612 } 613 614 static ssize_t show_node_type(struct device *device, 615 struct device_attribute *attr, char *buf) 616 { 617 struct ib_device *dev = container_of(device, struct ib_device, dev); 618 619 switch (dev->node_type) { 620 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 621 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 622 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); 623 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); 624 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 625 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 626 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 627 } 628 } 629 630 static ssize_t show_sys_image_guid(struct device *device, 631 struct device_attribute *dev_attr, char *buf) 632 { 633 struct ib_device *dev = container_of(device, struct ib_device, dev); 634 struct ib_device_attr attr; 635 ssize_t ret; 636 637 ret = ib_query_device(dev, &attr); 638 if (ret) 639 return ret; 640 641 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 642 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]), 643 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]), 644 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]), 645 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3])); 646 } 647 648 static ssize_t show_node_guid(struct device *device, 649 struct device_attribute *attr, char *buf) 650 { 651 struct ib_device *dev = container_of(device, struct ib_device, dev); 652 653 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 654 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 655 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 656 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 657 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 658 } 659 660 static ssize_t show_node_desc(struct device *device, 661 struct device_attribute *attr, char *buf) 662 { 663 struct ib_device *dev = container_of(device, struct ib_device, dev); 664 665 return sprintf(buf, "%.64s\n", dev->node_desc); 666 } 667 668 static ssize_t set_node_desc(struct device *device, 669 struct device_attribute *attr, 670 const char *buf, size_t count) 671 { 672 struct ib_device *dev = container_of(device, struct ib_device, dev); 673 struct ib_device_modify desc = {}; 674 int ret; 675 676 if (!dev->modify_device) 677 return -EIO; 678 679 memcpy(desc.node_desc, buf, min_t(int, count, 64)); 680 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 681 if (ret) 682 return ret; 683 684 return count; 685 } 686 687 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 688 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 689 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 690 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 691 692 static struct device_attribute *ib_class_attributes[] = { 693 &dev_attr_node_type, 694 &dev_attr_sys_image_guid, 695 &dev_attr_node_guid, 696 &dev_attr_node_desc 697 }; 698 699 static struct class ib_class = { 700 .name = "infiniband", 701 .dev_release = ib_device_release, 702 .dev_uevent = ib_device_uevent, 703 }; 704 705 /* Show a given an attribute in the statistics group */ 706 static ssize_t show_protocol_stat(const struct device *device, 707 struct device_attribute *attr, char *buf, 708 unsigned offset) 709 { 710 struct ib_device *dev = container_of(device, struct ib_device, dev); 711 union rdma_protocol_stats stats; 712 ssize_t ret; 713 714 ret = dev->get_protocol_stats(dev, &stats); 715 if (ret) 716 return ret; 717 718 return sprintf(buf, "%llu\n", 719 (unsigned long long) ((u64 *) &stats)[offset]); 720 } 721 722 /* generate a read-only iwarp statistics attribute */ 723 #define IW_STATS_ENTRY(name) \ 724 static ssize_t show_##name(struct device *device, \ 725 struct device_attribute *attr, char *buf) \ 726 { \ 727 return show_protocol_stat(device, attr, buf, \ 728 offsetof(struct iw_protocol_stats, name) / \ 729 sizeof (u64)); \ 730 } \ 731 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) 732 733 IW_STATS_ENTRY(ipInReceives); 734 IW_STATS_ENTRY(ipInHdrErrors); 735 IW_STATS_ENTRY(ipInTooBigErrors); 736 IW_STATS_ENTRY(ipInNoRoutes); 737 IW_STATS_ENTRY(ipInAddrErrors); 738 IW_STATS_ENTRY(ipInUnknownProtos); 739 IW_STATS_ENTRY(ipInTruncatedPkts); 740 IW_STATS_ENTRY(ipInDiscards); 741 IW_STATS_ENTRY(ipInDelivers); 742 IW_STATS_ENTRY(ipOutForwDatagrams); 743 IW_STATS_ENTRY(ipOutRequests); 744 IW_STATS_ENTRY(ipOutDiscards); 745 IW_STATS_ENTRY(ipOutNoRoutes); 746 IW_STATS_ENTRY(ipReasmTimeout); 747 IW_STATS_ENTRY(ipReasmReqds); 748 IW_STATS_ENTRY(ipReasmOKs); 749 IW_STATS_ENTRY(ipReasmFails); 750 IW_STATS_ENTRY(ipFragOKs); 751 IW_STATS_ENTRY(ipFragFails); 752 IW_STATS_ENTRY(ipFragCreates); 753 IW_STATS_ENTRY(ipInMcastPkts); 754 IW_STATS_ENTRY(ipOutMcastPkts); 755 IW_STATS_ENTRY(ipInBcastPkts); 756 IW_STATS_ENTRY(ipOutBcastPkts); 757 IW_STATS_ENTRY(tcpRtoAlgorithm); 758 IW_STATS_ENTRY(tcpRtoMin); 759 IW_STATS_ENTRY(tcpRtoMax); 760 IW_STATS_ENTRY(tcpMaxConn); 761 IW_STATS_ENTRY(tcpActiveOpens); 762 IW_STATS_ENTRY(tcpPassiveOpens); 763 IW_STATS_ENTRY(tcpAttemptFails); 764 IW_STATS_ENTRY(tcpEstabResets); 765 IW_STATS_ENTRY(tcpCurrEstab); 766 IW_STATS_ENTRY(tcpInSegs); 767 IW_STATS_ENTRY(tcpOutSegs); 768 IW_STATS_ENTRY(tcpRetransSegs); 769 IW_STATS_ENTRY(tcpInErrs); 770 IW_STATS_ENTRY(tcpOutRsts); 771 772 static struct attribute *iw_proto_stats_attrs[] = { 773 &dev_attr_ipInReceives.attr, 774 &dev_attr_ipInHdrErrors.attr, 775 &dev_attr_ipInTooBigErrors.attr, 776 &dev_attr_ipInNoRoutes.attr, 777 &dev_attr_ipInAddrErrors.attr, 778 &dev_attr_ipInUnknownProtos.attr, 779 &dev_attr_ipInTruncatedPkts.attr, 780 &dev_attr_ipInDiscards.attr, 781 &dev_attr_ipInDelivers.attr, 782 &dev_attr_ipOutForwDatagrams.attr, 783 &dev_attr_ipOutRequests.attr, 784 &dev_attr_ipOutDiscards.attr, 785 &dev_attr_ipOutNoRoutes.attr, 786 &dev_attr_ipReasmTimeout.attr, 787 &dev_attr_ipReasmReqds.attr, 788 &dev_attr_ipReasmOKs.attr, 789 &dev_attr_ipReasmFails.attr, 790 &dev_attr_ipFragOKs.attr, 791 &dev_attr_ipFragFails.attr, 792 &dev_attr_ipFragCreates.attr, 793 &dev_attr_ipInMcastPkts.attr, 794 &dev_attr_ipOutMcastPkts.attr, 795 &dev_attr_ipInBcastPkts.attr, 796 &dev_attr_ipOutBcastPkts.attr, 797 &dev_attr_tcpRtoAlgorithm.attr, 798 &dev_attr_tcpRtoMin.attr, 799 &dev_attr_tcpRtoMax.attr, 800 &dev_attr_tcpMaxConn.attr, 801 &dev_attr_tcpActiveOpens.attr, 802 &dev_attr_tcpPassiveOpens.attr, 803 &dev_attr_tcpAttemptFails.attr, 804 &dev_attr_tcpEstabResets.attr, 805 &dev_attr_tcpCurrEstab.attr, 806 &dev_attr_tcpInSegs.attr, 807 &dev_attr_tcpOutSegs.attr, 808 &dev_attr_tcpRetransSegs.attr, 809 &dev_attr_tcpInErrs.attr, 810 &dev_attr_tcpOutRsts.attr, 811 NULL 812 }; 813 814 static struct attribute_group iw_stats_group = { 815 .name = "proto_stats", 816 .attrs = iw_proto_stats_attrs, 817 }; 818 819 static void free_port_list_attributes(struct ib_device *device) 820 { 821 struct kobject *p, *t; 822 823 list_for_each_entry_safe(p, t, &device->port_list, entry) { 824 struct ib_port *port = container_of(p, struct ib_port, kobj); 825 list_del(&p->entry); 826 sysfs_remove_group(p, &pma_group); 827 sysfs_remove_group(p, &port->pkey_group); 828 sysfs_remove_group(p, &port->gid_group); 829 kobject_put(p); 830 } 831 832 kobject_put(device->ports_parent); 833 } 834 835 int ib_device_register_sysfs(struct ib_device *device, 836 int (*port_callback)(struct ib_device *, 837 u8, struct kobject *)) 838 { 839 struct device *class_dev = &device->dev; 840 int ret; 841 int i; 842 843 class_dev->class = &ib_class; 844 class_dev->parent = device->dma_device; 845 dev_set_name(class_dev, "%s", device->name); 846 dev_set_drvdata(class_dev, device); 847 848 INIT_LIST_HEAD(&device->port_list); 849 850 ret = device_register(class_dev); 851 if (ret) 852 goto err; 853 854 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 855 ret = device_create_file(class_dev, ib_class_attributes[i]); 856 if (ret) 857 goto err_unregister; 858 } 859 860 device->ports_parent = kobject_create_and_add("ports", 861 &class_dev->kobj); 862 if (!device->ports_parent) { 863 ret = -ENOMEM; 864 goto err_put; 865 } 866 867 if (device->node_type == RDMA_NODE_IB_SWITCH) { 868 ret = add_port(device, 0, port_callback); 869 if (ret) 870 goto err_put; 871 } else { 872 for (i = 1; i <= device->phys_port_cnt; ++i) { 873 ret = add_port(device, i, port_callback); 874 if (ret) 875 goto err_put; 876 } 877 } 878 879 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) { 880 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group); 881 if (ret) 882 goto err_put; 883 } 884 885 return 0; 886 887 err_put: 888 free_port_list_attributes(device); 889 890 err_unregister: 891 device_unregister(class_dev); 892 893 err: 894 return ret; 895 } 896 897 void ib_device_unregister_sysfs(struct ib_device *device) 898 { 899 /* Hold kobject until ib_dealloc_device() */ 900 struct kobject *kobj_dev = kobject_get(&device->dev.kobj); 901 int i; 902 903 if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) 904 sysfs_remove_group(kobj_dev, &iw_stats_group); 905 906 free_port_list_attributes(device); 907 908 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) 909 device_remove_file(&device->dev, ib_class_attributes[i]); 910 911 device_unregister(&device->dev); 912 } 913 914 int ib_sysfs_setup(void) 915 { 916 return class_register(&ib_class); 917 } 918 919 void ib_sysfs_cleanup(void) 920 { 921 class_unregister(&ib_class); 922 } 923