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 #include <linux/netdevice.h> 41 42 #include <rdma/ib_mad.h> 43 #include <rdma/ib_pma.h> 44 45 struct ib_port; 46 47 struct gid_attr_group { 48 struct ib_port *port; 49 struct kobject kobj; 50 struct attribute_group ndev; 51 struct attribute_group type; 52 }; 53 struct ib_port { 54 struct kobject kobj; 55 struct ib_device *ibdev; 56 struct gid_attr_group *gid_attr_group; 57 struct attribute_group gid_group; 58 struct attribute_group pkey_group; 59 struct attribute_group *pma_table; 60 struct attribute_group *hw_stats_ag; 61 struct rdma_hw_stats *hw_stats; 62 u8 port_num; 63 }; 64 65 struct port_attribute { 66 struct attribute attr; 67 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); 68 ssize_t (*store)(struct ib_port *, struct port_attribute *, 69 const char *buf, size_t count); 70 }; 71 72 #define PORT_ATTR(_name, _mode, _show, _store) \ 73 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 74 75 #define PORT_ATTR_RO(_name) \ 76 struct port_attribute port_attr_##_name = __ATTR_RO(_name) 77 78 struct port_table_attribute { 79 struct port_attribute attr; 80 char name[8]; 81 int index; 82 __be16 attr_id; 83 }; 84 85 struct hw_stats_attribute { 86 struct attribute attr; 87 ssize_t (*show)(struct kobject *kobj, 88 struct attribute *attr, char *buf); 89 ssize_t (*store)(struct kobject *kobj, 90 struct attribute *attr, 91 const char *buf, 92 size_t count); 93 int index; 94 u8 port_num; 95 }; 96 97 static ssize_t port_attr_show(struct kobject *kobj, 98 struct attribute *attr, char *buf) 99 { 100 struct port_attribute *port_attr = 101 container_of(attr, struct port_attribute, attr); 102 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 103 104 if (!port_attr->show) 105 return -EIO; 106 107 return port_attr->show(p, port_attr, buf); 108 } 109 110 static const struct sysfs_ops port_sysfs_ops = { 111 .show = port_attr_show 112 }; 113 114 static ssize_t gid_attr_show(struct kobject *kobj, 115 struct attribute *attr, char *buf) 116 { 117 struct port_attribute *port_attr = 118 container_of(attr, struct port_attribute, attr); 119 struct ib_port *p = container_of(kobj, struct gid_attr_group, 120 kobj)->port; 121 122 if (!port_attr->show) 123 return -EIO; 124 125 return port_attr->show(p, port_attr, buf); 126 } 127 128 static const struct sysfs_ops gid_attr_sysfs_ops = { 129 .show = gid_attr_show 130 }; 131 132 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, 133 char *buf) 134 { 135 struct ib_port_attr attr; 136 ssize_t ret; 137 138 static const char *state_name[] = { 139 [IB_PORT_NOP] = "NOP", 140 [IB_PORT_DOWN] = "DOWN", 141 [IB_PORT_INIT] = "INIT", 142 [IB_PORT_ARMED] = "ARMED", 143 [IB_PORT_ACTIVE] = "ACTIVE", 144 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 145 }; 146 147 ret = ib_query_port(p->ibdev, p->port_num, &attr); 148 if (ret) 149 return ret; 150 151 return sprintf(buf, "%d: %s\n", attr.state, 152 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 153 state_name[attr.state] : "UNKNOWN"); 154 } 155 156 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 157 char *buf) 158 { 159 struct ib_port_attr attr; 160 ssize_t ret; 161 162 ret = ib_query_port(p->ibdev, p->port_num, &attr); 163 if (ret) 164 return ret; 165 166 return sprintf(buf, "0x%x\n", attr.lid); 167 } 168 169 static ssize_t lid_mask_count_show(struct ib_port *p, 170 struct port_attribute *unused, 171 char *buf) 172 { 173 struct ib_port_attr attr; 174 ssize_t ret; 175 176 ret = ib_query_port(p->ibdev, p->port_num, &attr); 177 if (ret) 178 return ret; 179 180 return sprintf(buf, "%d\n", attr.lmc); 181 } 182 183 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, 184 char *buf) 185 { 186 struct ib_port_attr attr; 187 ssize_t ret; 188 189 ret = ib_query_port(p->ibdev, p->port_num, &attr); 190 if (ret) 191 return ret; 192 193 return sprintf(buf, "0x%x\n", attr.sm_lid); 194 } 195 196 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, 197 char *buf) 198 { 199 struct ib_port_attr attr; 200 ssize_t ret; 201 202 ret = ib_query_port(p->ibdev, p->port_num, &attr); 203 if (ret) 204 return ret; 205 206 return sprintf(buf, "%d\n", attr.sm_sl); 207 } 208 209 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 210 char *buf) 211 { 212 struct ib_port_attr attr; 213 ssize_t ret; 214 215 ret = ib_query_port(p->ibdev, p->port_num, &attr); 216 if (ret) 217 return ret; 218 219 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 220 } 221 222 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 223 char *buf) 224 { 225 struct ib_port_attr attr; 226 char *speed = ""; 227 int rate; /* in deci-Gb/sec */ 228 ssize_t ret; 229 230 ret = ib_query_port(p->ibdev, p->port_num, &attr); 231 if (ret) 232 return ret; 233 234 switch (attr.active_speed) { 235 case IB_SPEED_DDR: 236 speed = " DDR"; 237 rate = 50; 238 break; 239 case IB_SPEED_QDR: 240 speed = " QDR"; 241 rate = 100; 242 break; 243 case IB_SPEED_FDR10: 244 speed = " FDR10"; 245 rate = 100; 246 break; 247 case IB_SPEED_FDR: 248 speed = " FDR"; 249 rate = 140; 250 break; 251 case IB_SPEED_EDR: 252 speed = " EDR"; 253 rate = 250; 254 break; 255 case IB_SPEED_SDR: 256 default: /* default to SDR for invalid rates */ 257 rate = 25; 258 break; 259 } 260 261 rate *= ib_width_enum_to_int(attr.active_width); 262 if (rate < 0) 263 return -EINVAL; 264 265 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 266 rate / 10, rate % 10 ? ".5" : "", 267 ib_width_enum_to_int(attr.active_width), speed); 268 } 269 270 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 271 char *buf) 272 { 273 struct ib_port_attr attr; 274 275 ssize_t ret; 276 277 ret = ib_query_port(p->ibdev, p->port_num, &attr); 278 if (ret) 279 return ret; 280 281 switch (attr.phys_state) { 282 case 1: return sprintf(buf, "1: Sleep\n"); 283 case 2: return sprintf(buf, "2: Polling\n"); 284 case 3: return sprintf(buf, "3: Disabled\n"); 285 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 286 case 5: return sprintf(buf, "5: LinkUp\n"); 287 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 288 case 7: return sprintf(buf, "7: Phy Test\n"); 289 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 290 } 291 } 292 293 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 294 char *buf) 295 { 296 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 297 case IB_LINK_LAYER_INFINIBAND: 298 return sprintf(buf, "%s\n", "InfiniBand"); 299 case IB_LINK_LAYER_ETHERNET: 300 return sprintf(buf, "%s\n", "Ethernet"); 301 default: 302 return sprintf(buf, "%s\n", "Unknown"); 303 } 304 } 305 306 static PORT_ATTR_RO(state); 307 static PORT_ATTR_RO(lid); 308 static PORT_ATTR_RO(lid_mask_count); 309 static PORT_ATTR_RO(sm_lid); 310 static PORT_ATTR_RO(sm_sl); 311 static PORT_ATTR_RO(cap_mask); 312 static PORT_ATTR_RO(rate); 313 static PORT_ATTR_RO(phys_state); 314 static PORT_ATTR_RO(link_layer); 315 316 static struct attribute *port_default_attrs[] = { 317 &port_attr_state.attr, 318 &port_attr_lid.attr, 319 &port_attr_lid_mask_count.attr, 320 &port_attr_sm_lid.attr, 321 &port_attr_sm_sl.attr, 322 &port_attr_cap_mask.attr, 323 &port_attr_rate.attr, 324 &port_attr_phys_state.attr, 325 &port_attr_link_layer.attr, 326 NULL 327 }; 328 329 static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf) 330 { 331 if (!gid_attr->ndev) 332 return -EINVAL; 333 334 return sprintf(buf, "%s\n", gid_attr->ndev->name); 335 } 336 337 static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf) 338 { 339 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type)); 340 } 341 342 static ssize_t _show_port_gid_attr(struct ib_port *p, 343 struct port_attribute *attr, 344 char *buf, 345 size_t (*print)(struct ib_gid_attr *gid_attr, 346 char *buf)) 347 { 348 struct port_table_attribute *tab_attr = 349 container_of(attr, struct port_table_attribute, attr); 350 union ib_gid gid; 351 struct ib_gid_attr gid_attr = {}; 352 ssize_t ret; 353 354 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, 355 &gid_attr); 356 if (ret) 357 goto err; 358 359 ret = print(&gid_attr, buf); 360 361 err: 362 if (gid_attr.ndev) 363 dev_put(gid_attr.ndev); 364 return ret; 365 } 366 367 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 368 char *buf) 369 { 370 struct port_table_attribute *tab_attr = 371 container_of(attr, struct port_table_attribute, attr); 372 union ib_gid gid; 373 ssize_t ret; 374 375 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL); 376 if (ret) 377 return ret; 378 379 return sprintf(buf, "%pI6\n", gid.raw); 380 } 381 382 static ssize_t show_port_gid_attr_ndev(struct ib_port *p, 383 struct port_attribute *attr, char *buf) 384 { 385 return _show_port_gid_attr(p, attr, buf, print_ndev); 386 } 387 388 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p, 389 struct port_attribute *attr, 390 char *buf) 391 { 392 return _show_port_gid_attr(p, attr, buf, print_gid_type); 393 } 394 395 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 396 char *buf) 397 { 398 struct port_table_attribute *tab_attr = 399 container_of(attr, struct port_table_attribute, attr); 400 u16 pkey; 401 ssize_t ret; 402 403 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 404 if (ret) 405 return ret; 406 407 return sprintf(buf, "0x%04x\n", pkey); 408 } 409 410 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 411 struct port_table_attribute port_pma_attr_##_name = { \ 412 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 413 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \ 414 .attr_id = IB_PMA_PORT_COUNTERS , \ 415 } 416 417 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \ 418 struct port_table_attribute port_pma_attr_ext_##_name = { \ 419 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 420 .index = (_offset) | ((_width) << 16), \ 421 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \ 422 } 423 424 /* 425 * Get a Perfmgmt MAD block of data. 426 * Returns error code or the number of bytes retrieved. 427 */ 428 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr, 429 void *data, int offset, size_t size) 430 { 431 struct ib_mad *in_mad; 432 struct ib_mad *out_mad; 433 size_t mad_size = sizeof(*out_mad); 434 u16 out_mad_pkey_index = 0; 435 ssize_t ret; 436 437 if (!dev->process_mad) 438 return -ENOSYS; 439 440 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 441 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 442 if (!in_mad || !out_mad) { 443 ret = -ENOMEM; 444 goto out; 445 } 446 447 in_mad->mad_hdr.base_version = 1; 448 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 449 in_mad->mad_hdr.class_version = 1; 450 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 451 in_mad->mad_hdr.attr_id = attr; 452 453 if (attr != IB_PMA_CLASS_PORT_INFO) 454 in_mad->data[41] = port_num; /* PortSelect field */ 455 456 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY, 457 port_num, NULL, NULL, 458 (const struct ib_mad_hdr *)in_mad, mad_size, 459 (struct ib_mad_hdr *)out_mad, &mad_size, 460 &out_mad_pkey_index) & 461 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 462 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 463 ret = -EINVAL; 464 goto out; 465 } 466 memcpy(data, out_mad->data + offset, size); 467 ret = size; 468 out: 469 kfree(in_mad); 470 kfree(out_mad); 471 return ret; 472 } 473 474 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 475 char *buf) 476 { 477 struct port_table_attribute *tab_attr = 478 container_of(attr, struct port_table_attribute, attr); 479 int offset = tab_attr->index & 0xffff; 480 int width = (tab_attr->index >> 16) & 0xff; 481 ssize_t ret; 482 u8 data[8]; 483 484 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data, 485 40 + offset / 8, sizeof(data)); 486 if (ret < 0) 487 return sprintf(buf, "N/A (no PMA)\n"); 488 489 switch (width) { 490 case 4: 491 ret = sprintf(buf, "%u\n", (*data >> 492 (4 - (offset % 8))) & 0xf); 493 break; 494 case 8: 495 ret = sprintf(buf, "%u\n", *data); 496 break; 497 case 16: 498 ret = sprintf(buf, "%u\n", 499 be16_to_cpup((__be16 *)data)); 500 break; 501 case 32: 502 ret = sprintf(buf, "%u\n", 503 be32_to_cpup((__be32 *)data)); 504 break; 505 case 64: 506 ret = sprintf(buf, "%llu\n", 507 be64_to_cpup((__be64 *)data)); 508 break; 509 510 default: 511 ret = 0; 512 } 513 514 return ret; 515 } 516 517 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 518 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 519 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 520 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 521 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 522 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 523 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 524 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 525 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 526 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 527 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 528 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 529 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 530 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 531 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 532 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 533 534 /* 535 * Counters added by extended set 536 */ 537 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64); 538 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128); 539 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192); 540 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256); 541 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320); 542 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384); 543 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448); 544 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512); 545 546 static struct attribute *pma_attrs[] = { 547 &port_pma_attr_symbol_error.attr.attr, 548 &port_pma_attr_link_error_recovery.attr.attr, 549 &port_pma_attr_link_downed.attr.attr, 550 &port_pma_attr_port_rcv_errors.attr.attr, 551 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 552 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 553 &port_pma_attr_port_xmit_discards.attr.attr, 554 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 555 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 556 &port_pma_attr_local_link_integrity_errors.attr.attr, 557 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 558 &port_pma_attr_VL15_dropped.attr.attr, 559 &port_pma_attr_port_xmit_data.attr.attr, 560 &port_pma_attr_port_rcv_data.attr.attr, 561 &port_pma_attr_port_xmit_packets.attr.attr, 562 &port_pma_attr_port_rcv_packets.attr.attr, 563 NULL 564 }; 565 566 static struct attribute *pma_attrs_ext[] = { 567 &port_pma_attr_symbol_error.attr.attr, 568 &port_pma_attr_link_error_recovery.attr.attr, 569 &port_pma_attr_link_downed.attr.attr, 570 &port_pma_attr_port_rcv_errors.attr.attr, 571 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 572 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 573 &port_pma_attr_port_xmit_discards.attr.attr, 574 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 575 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 576 &port_pma_attr_local_link_integrity_errors.attr.attr, 577 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 578 &port_pma_attr_VL15_dropped.attr.attr, 579 &port_pma_attr_ext_port_xmit_data.attr.attr, 580 &port_pma_attr_ext_port_rcv_data.attr.attr, 581 &port_pma_attr_ext_port_xmit_packets.attr.attr, 582 &port_pma_attr_ext_port_rcv_packets.attr.attr, 583 &port_pma_attr_ext_unicast_rcv_packets.attr.attr, 584 &port_pma_attr_ext_unicast_xmit_packets.attr.attr, 585 &port_pma_attr_ext_multicast_rcv_packets.attr.attr, 586 &port_pma_attr_ext_multicast_xmit_packets.attr.attr, 587 NULL 588 }; 589 590 static struct attribute *pma_attrs_noietf[] = { 591 &port_pma_attr_symbol_error.attr.attr, 592 &port_pma_attr_link_error_recovery.attr.attr, 593 &port_pma_attr_link_downed.attr.attr, 594 &port_pma_attr_port_rcv_errors.attr.attr, 595 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 596 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 597 &port_pma_attr_port_xmit_discards.attr.attr, 598 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 599 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 600 &port_pma_attr_local_link_integrity_errors.attr.attr, 601 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 602 &port_pma_attr_VL15_dropped.attr.attr, 603 &port_pma_attr_ext_port_xmit_data.attr.attr, 604 &port_pma_attr_ext_port_rcv_data.attr.attr, 605 &port_pma_attr_ext_port_xmit_packets.attr.attr, 606 &port_pma_attr_ext_port_rcv_packets.attr.attr, 607 NULL 608 }; 609 610 static struct attribute_group pma_group = { 611 .name = "counters", 612 .attrs = pma_attrs 613 }; 614 615 static struct attribute_group pma_group_ext = { 616 .name = "counters", 617 .attrs = pma_attrs_ext 618 }; 619 620 static struct attribute_group pma_group_noietf = { 621 .name = "counters", 622 .attrs = pma_attrs_noietf 623 }; 624 625 static void ib_port_release(struct kobject *kobj) 626 { 627 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 628 struct attribute *a; 629 int i; 630 631 if (p->gid_group.attrs) { 632 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 633 kfree(a); 634 635 kfree(p->gid_group.attrs); 636 } 637 638 if (p->pkey_group.attrs) { 639 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 640 kfree(a); 641 642 kfree(p->pkey_group.attrs); 643 } 644 645 kfree(p); 646 } 647 648 static void ib_port_gid_attr_release(struct kobject *kobj) 649 { 650 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group, 651 kobj); 652 struct attribute *a; 653 int i; 654 655 if (g->ndev.attrs) { 656 for (i = 0; (a = g->ndev.attrs[i]); ++i) 657 kfree(a); 658 659 kfree(g->ndev.attrs); 660 } 661 662 if (g->type.attrs) { 663 for (i = 0; (a = g->type.attrs[i]); ++i) 664 kfree(a); 665 666 kfree(g->type.attrs); 667 } 668 669 kfree(g); 670 } 671 672 static struct kobj_type port_type = { 673 .release = ib_port_release, 674 .sysfs_ops = &port_sysfs_ops, 675 .default_attrs = port_default_attrs 676 }; 677 678 static struct kobj_type gid_attr_type = { 679 .sysfs_ops = &gid_attr_sysfs_ops, 680 .release = ib_port_gid_attr_release 681 }; 682 683 static struct attribute ** 684 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 685 struct port_attribute *, char *buf), 686 int len) 687 { 688 struct attribute **tab_attr; 689 struct port_table_attribute *element; 690 int i; 691 692 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 693 if (!tab_attr) 694 return NULL; 695 696 for (i = 0; i < len; i++) { 697 element = kzalloc(sizeof(struct port_table_attribute), 698 GFP_KERNEL); 699 if (!element) 700 goto err; 701 702 if (snprintf(element->name, sizeof(element->name), 703 "%d", i) >= sizeof(element->name)) { 704 kfree(element); 705 goto err; 706 } 707 708 element->attr.attr.name = element->name; 709 element->attr.attr.mode = S_IRUGO; 710 element->attr.show = show; 711 element->index = i; 712 sysfs_attr_init(&element->attr.attr); 713 714 tab_attr[i] = &element->attr.attr; 715 } 716 717 return tab_attr; 718 719 err: 720 while (--i >= 0) 721 kfree(tab_attr[i]); 722 kfree(tab_attr); 723 return NULL; 724 } 725 726 /* 727 * Figure out which counter table to use depending on 728 * the device capabilities. 729 */ 730 static struct attribute_group *get_counter_table(struct ib_device *dev, 731 int port_num) 732 { 733 struct ib_class_port_info cpi; 734 735 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO, 736 &cpi, 40, sizeof(cpi)) >= 0) { 737 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH) 738 /* We have extended counters */ 739 return &pma_group_ext; 740 741 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) 742 /* But not the IETF ones */ 743 return &pma_group_noietf; 744 } 745 746 /* Fall back to normal counters */ 747 return &pma_group; 748 } 749 750 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats, 751 u8 port_num, int index) 752 { 753 int ret; 754 755 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan)) 756 return 0; 757 ret = dev->get_hw_stats(dev, stats, port_num, index); 758 if (ret < 0) 759 return ret; 760 if (ret == stats->num_counters) 761 stats->timestamp = jiffies; 762 763 return 0; 764 } 765 766 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf) 767 { 768 return sprintf(buf, "%llu\n", stats->value[index]); 769 } 770 771 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr, 772 char *buf) 773 { 774 struct ib_device *dev; 775 struct ib_port *port; 776 struct hw_stats_attribute *hsa; 777 struct rdma_hw_stats *stats; 778 int ret; 779 780 hsa = container_of(attr, struct hw_stats_attribute, attr); 781 if (!hsa->port_num) { 782 dev = container_of((struct device *)kobj, 783 struct ib_device, dev); 784 stats = dev->hw_stats; 785 } else { 786 port = container_of(kobj, struct ib_port, kobj); 787 dev = port->ibdev; 788 stats = port->hw_stats; 789 } 790 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index); 791 if (ret) 792 return ret; 793 return print_hw_stat(stats, hsa->index, buf); 794 } 795 796 static ssize_t show_stats_lifespan(struct kobject *kobj, 797 struct attribute *attr, 798 char *buf) 799 { 800 struct hw_stats_attribute *hsa; 801 int msecs; 802 803 hsa = container_of(attr, struct hw_stats_attribute, attr); 804 if (!hsa->port_num) { 805 struct ib_device *dev = container_of((struct device *)kobj, 806 struct ib_device, dev); 807 msecs = jiffies_to_msecs(dev->hw_stats->lifespan); 808 } else { 809 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 810 msecs = jiffies_to_msecs(p->hw_stats->lifespan); 811 } 812 return sprintf(buf, "%d\n", msecs); 813 } 814 815 static ssize_t set_stats_lifespan(struct kobject *kobj, 816 struct attribute *attr, 817 const char *buf, size_t count) 818 { 819 struct hw_stats_attribute *hsa; 820 int msecs; 821 int jiffies; 822 int ret; 823 824 ret = kstrtoint(buf, 10, &msecs); 825 if (ret) 826 return ret; 827 if (msecs < 0 || msecs > 10000) 828 return -EINVAL; 829 jiffies = msecs_to_jiffies(msecs); 830 hsa = container_of(attr, struct hw_stats_attribute, attr); 831 if (!hsa->port_num) { 832 struct ib_device *dev = container_of((struct device *)kobj, 833 struct ib_device, dev); 834 dev->hw_stats->lifespan = jiffies; 835 } else { 836 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 837 p->hw_stats->lifespan = jiffies; 838 } 839 return count; 840 } 841 842 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group) 843 { 844 struct attribute **attr; 845 846 sysfs_remove_group(kobj, attr_group); 847 848 for (attr = attr_group->attrs; *attr; attr++) 849 kfree(*attr); 850 kfree(attr_group); 851 } 852 853 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name) 854 { 855 struct hw_stats_attribute *hsa; 856 857 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 858 if (!hsa) 859 return NULL; 860 861 hsa->attr.name = (char *)name; 862 hsa->attr.mode = S_IRUGO; 863 hsa->show = show_hw_stats; 864 hsa->store = NULL; 865 hsa->index = index; 866 hsa->port_num = port_num; 867 868 return &hsa->attr; 869 } 870 871 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num) 872 { 873 struct hw_stats_attribute *hsa; 874 875 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 876 if (!hsa) 877 return NULL; 878 879 hsa->attr.name = name; 880 hsa->attr.mode = S_IWUSR | S_IRUGO; 881 hsa->show = show_stats_lifespan; 882 hsa->store = set_stats_lifespan; 883 hsa->index = 0; 884 hsa->port_num = port_num; 885 886 return &hsa->attr; 887 } 888 889 static void setup_hw_stats(struct ib_device *device, struct ib_port *port, 890 u8 port_num) 891 { 892 struct attribute_group *hsag = NULL; 893 struct rdma_hw_stats *stats; 894 int i = 0, ret; 895 896 stats = device->alloc_hw_stats(device, port_num); 897 898 if (!stats) 899 return; 900 901 if (!stats->names || stats->num_counters <= 0) 902 goto err; 903 904 hsag = kzalloc(sizeof(*hsag) + 905 // 1 extra for the lifespan config entry 906 sizeof(void *) * (stats->num_counters + 1), 907 GFP_KERNEL); 908 if (!hsag) 909 return; 910 911 ret = device->get_hw_stats(device, stats, port_num, 912 stats->num_counters); 913 if (ret != stats->num_counters) 914 goto err; 915 916 stats->timestamp = jiffies; 917 918 hsag->name = "hw_counters"; 919 hsag->attrs = (void *)hsag + sizeof(*hsag); 920 921 for (i = 0; i < stats->num_counters; i++) { 922 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]); 923 if (!hsag->attrs[i]) 924 goto err; 925 } 926 927 /* treat an error here as non-fatal */ 928 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num); 929 930 if (port) { 931 struct kobject *kobj = &port->kobj; 932 ret = sysfs_create_group(kobj, hsag); 933 if (ret) 934 goto err; 935 port->hw_stats_ag = hsag; 936 port->hw_stats = stats; 937 } else { 938 struct kobject *kobj = &device->dev.kobj; 939 ret = sysfs_create_group(kobj, hsag); 940 if (ret) 941 goto err; 942 device->hw_stats_ag = hsag; 943 device->hw_stats = stats; 944 } 945 946 return; 947 948 err: 949 kfree(stats); 950 for (; i >= 0; i--) 951 kfree(hsag->attrs[i]); 952 kfree(hsag); 953 return; 954 } 955 956 static int add_port(struct ib_device *device, int port_num, 957 int (*port_callback)(struct ib_device *, 958 u8, struct kobject *)) 959 { 960 struct ib_port *p; 961 struct ib_port_attr attr; 962 int i; 963 int ret; 964 965 ret = ib_query_port(device, port_num, &attr); 966 if (ret) 967 return ret; 968 969 p = kzalloc(sizeof *p, GFP_KERNEL); 970 if (!p) 971 return -ENOMEM; 972 973 p->ibdev = device; 974 p->port_num = port_num; 975 976 ret = kobject_init_and_add(&p->kobj, &port_type, 977 device->ports_parent, 978 "%d", port_num); 979 if (ret) { 980 kfree(p); 981 return ret; 982 } 983 984 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL); 985 if (!p->gid_attr_group) { 986 ret = -ENOMEM; 987 goto err_put; 988 } 989 990 p->gid_attr_group->port = p; 991 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type, 992 &p->kobj, "gid_attrs"); 993 if (ret) { 994 kfree(p->gid_attr_group); 995 goto err_put; 996 } 997 998 p->pma_table = get_counter_table(device, port_num); 999 ret = sysfs_create_group(&p->kobj, p->pma_table); 1000 if (ret) 1001 goto err_put_gid_attrs; 1002 1003 p->gid_group.name = "gids"; 1004 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 1005 if (!p->gid_group.attrs) { 1006 ret = -ENOMEM; 1007 goto err_remove_pma; 1008 } 1009 1010 ret = sysfs_create_group(&p->kobj, &p->gid_group); 1011 if (ret) 1012 goto err_free_gid; 1013 1014 p->gid_attr_group->ndev.name = "ndevs"; 1015 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev, 1016 attr.gid_tbl_len); 1017 if (!p->gid_attr_group->ndev.attrs) { 1018 ret = -ENOMEM; 1019 goto err_remove_gid; 1020 } 1021 1022 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1023 &p->gid_attr_group->ndev); 1024 if (ret) 1025 goto err_free_gid_ndev; 1026 1027 p->gid_attr_group->type.name = "types"; 1028 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type, 1029 attr.gid_tbl_len); 1030 if (!p->gid_attr_group->type.attrs) { 1031 ret = -ENOMEM; 1032 goto err_remove_gid_ndev; 1033 } 1034 1035 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1036 &p->gid_attr_group->type); 1037 if (ret) 1038 goto err_free_gid_type; 1039 1040 p->pkey_group.name = "pkeys"; 1041 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 1042 attr.pkey_tbl_len); 1043 if (!p->pkey_group.attrs) { 1044 ret = -ENOMEM; 1045 goto err_remove_gid_type; 1046 } 1047 1048 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 1049 if (ret) 1050 goto err_free_pkey; 1051 1052 if (port_callback) { 1053 ret = port_callback(device, port_num, &p->kobj); 1054 if (ret) 1055 goto err_remove_pkey; 1056 } 1057 1058 /* 1059 * If port == 0, it means we have only one port and the parent 1060 * device, not this port device, should be the holder of the 1061 * hw_counters 1062 */ 1063 if (device->alloc_hw_stats && port_num) 1064 setup_hw_stats(device, p, port_num); 1065 1066 list_add_tail(&p->kobj.entry, &device->port_list); 1067 1068 kobject_uevent(&p->kobj, KOBJ_ADD); 1069 return 0; 1070 1071 err_remove_pkey: 1072 sysfs_remove_group(&p->kobj, &p->pkey_group); 1073 1074 err_free_pkey: 1075 for (i = 0; i < attr.pkey_tbl_len; ++i) 1076 kfree(p->pkey_group.attrs[i]); 1077 1078 kfree(p->pkey_group.attrs); 1079 p->pkey_group.attrs = NULL; 1080 1081 err_remove_gid_type: 1082 sysfs_remove_group(&p->gid_attr_group->kobj, 1083 &p->gid_attr_group->type); 1084 1085 err_free_gid_type: 1086 for (i = 0; i < attr.gid_tbl_len; ++i) 1087 kfree(p->gid_attr_group->type.attrs[i]); 1088 1089 kfree(p->gid_attr_group->type.attrs); 1090 p->gid_attr_group->type.attrs = NULL; 1091 1092 err_remove_gid_ndev: 1093 sysfs_remove_group(&p->gid_attr_group->kobj, 1094 &p->gid_attr_group->ndev); 1095 1096 err_free_gid_ndev: 1097 for (i = 0; i < attr.gid_tbl_len; ++i) 1098 kfree(p->gid_attr_group->ndev.attrs[i]); 1099 1100 kfree(p->gid_attr_group->ndev.attrs); 1101 p->gid_attr_group->ndev.attrs = NULL; 1102 1103 err_remove_gid: 1104 sysfs_remove_group(&p->kobj, &p->gid_group); 1105 1106 err_free_gid: 1107 for (i = 0; i < attr.gid_tbl_len; ++i) 1108 kfree(p->gid_group.attrs[i]); 1109 1110 kfree(p->gid_group.attrs); 1111 p->gid_group.attrs = NULL; 1112 1113 err_remove_pma: 1114 sysfs_remove_group(&p->kobj, p->pma_table); 1115 1116 err_put_gid_attrs: 1117 kobject_put(&p->gid_attr_group->kobj); 1118 1119 err_put: 1120 kobject_put(&p->kobj); 1121 return ret; 1122 } 1123 1124 static ssize_t show_node_type(struct device *device, 1125 struct device_attribute *attr, char *buf) 1126 { 1127 struct ib_device *dev = container_of(device, struct ib_device, dev); 1128 1129 switch (dev->node_type) { 1130 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 1131 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 1132 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); 1133 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); 1134 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 1135 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 1136 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 1137 } 1138 } 1139 1140 static ssize_t show_sys_image_guid(struct device *device, 1141 struct device_attribute *dev_attr, char *buf) 1142 { 1143 struct ib_device *dev = container_of(device, struct ib_device, dev); 1144 1145 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1146 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]), 1147 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]), 1148 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]), 1149 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3])); 1150 } 1151 1152 static ssize_t show_node_guid(struct device *device, 1153 struct device_attribute *attr, char *buf) 1154 { 1155 struct ib_device *dev = container_of(device, struct ib_device, dev); 1156 1157 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1158 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 1159 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 1160 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 1161 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 1162 } 1163 1164 static ssize_t show_node_desc(struct device *device, 1165 struct device_attribute *attr, char *buf) 1166 { 1167 struct ib_device *dev = container_of(device, struct ib_device, dev); 1168 1169 return sprintf(buf, "%.64s\n", dev->node_desc); 1170 } 1171 1172 static ssize_t set_node_desc(struct device *device, 1173 struct device_attribute *attr, 1174 const char *buf, size_t count) 1175 { 1176 struct ib_device *dev = container_of(device, struct ib_device, dev); 1177 struct ib_device_modify desc = {}; 1178 int ret; 1179 1180 if (!dev->modify_device) 1181 return -EIO; 1182 1183 memcpy(desc.node_desc, buf, min_t(int, count, 64)); 1184 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 1185 if (ret) 1186 return ret; 1187 1188 return count; 1189 } 1190 1191 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 1192 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 1193 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 1194 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 1195 1196 static struct device_attribute *ib_class_attributes[] = { 1197 &dev_attr_node_type, 1198 &dev_attr_sys_image_guid, 1199 &dev_attr_node_guid, 1200 &dev_attr_node_desc 1201 }; 1202 1203 static void free_port_list_attributes(struct ib_device *device) 1204 { 1205 struct kobject *p, *t; 1206 1207 list_for_each_entry_safe(p, t, &device->port_list, entry) { 1208 struct ib_port *port = container_of(p, struct ib_port, kobj); 1209 list_del(&p->entry); 1210 if (port->hw_stats) { 1211 kfree(port->hw_stats); 1212 free_hsag(&port->kobj, port->hw_stats_ag); 1213 } 1214 sysfs_remove_group(p, port->pma_table); 1215 sysfs_remove_group(p, &port->pkey_group); 1216 sysfs_remove_group(p, &port->gid_group); 1217 sysfs_remove_group(&port->gid_attr_group->kobj, 1218 &port->gid_attr_group->ndev); 1219 sysfs_remove_group(&port->gid_attr_group->kobj, 1220 &port->gid_attr_group->type); 1221 kobject_put(&port->gid_attr_group->kobj); 1222 kobject_put(p); 1223 } 1224 1225 kobject_put(device->ports_parent); 1226 } 1227 1228 int ib_device_register_sysfs(struct ib_device *device, 1229 int (*port_callback)(struct ib_device *, 1230 u8, struct kobject *)) 1231 { 1232 struct device *class_dev = &device->dev; 1233 int ret; 1234 int i; 1235 1236 device->dev.parent = device->dma_device; 1237 ret = dev_set_name(class_dev, "%s", device->name); 1238 if (ret) 1239 return ret; 1240 1241 ret = device_add(class_dev); 1242 if (ret) 1243 goto err; 1244 1245 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 1246 ret = device_create_file(class_dev, ib_class_attributes[i]); 1247 if (ret) 1248 goto err_unregister; 1249 } 1250 1251 device->ports_parent = kobject_create_and_add("ports", 1252 &class_dev->kobj); 1253 if (!device->ports_parent) { 1254 ret = -ENOMEM; 1255 goto err_put; 1256 } 1257 1258 if (rdma_cap_ib_switch(device)) { 1259 ret = add_port(device, 0, port_callback); 1260 if (ret) 1261 goto err_put; 1262 } else { 1263 for (i = 1; i <= device->phys_port_cnt; ++i) { 1264 ret = add_port(device, i, port_callback); 1265 if (ret) 1266 goto err_put; 1267 } 1268 } 1269 1270 if (device->alloc_hw_stats) 1271 setup_hw_stats(device, NULL, 0); 1272 1273 return 0; 1274 1275 err_put: 1276 free_port_list_attributes(device); 1277 1278 err_unregister: 1279 device_unregister(class_dev); 1280 1281 err: 1282 return ret; 1283 } 1284 1285 void ib_device_unregister_sysfs(struct ib_device *device) 1286 { 1287 int i; 1288 1289 /* Hold kobject until ib_dealloc_device() */ 1290 kobject_get(&device->dev.kobj); 1291 1292 free_port_list_attributes(device); 1293 1294 if (device->hw_stats) { 1295 kfree(device->hw_stats); 1296 free_hsag(&device->dev.kobj, device->hw_stats_ag); 1297 } 1298 1299 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) 1300 device_remove_file(&device->dev, ib_class_attributes[i]); 1301 1302 device_unregister(&device->dev); 1303 } 1304