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 #include <linux/ethtool.h> 42 43 #include <rdma/ib_mad.h> 44 #include <rdma/ib_pma.h> 45 46 struct ib_port; 47 48 struct gid_attr_group { 49 struct ib_port *port; 50 struct kobject kobj; 51 struct attribute_group ndev; 52 struct attribute_group type; 53 }; 54 struct ib_port { 55 struct kobject kobj; 56 struct ib_device *ibdev; 57 struct gid_attr_group *gid_attr_group; 58 struct attribute_group gid_group; 59 struct attribute_group pkey_group; 60 struct attribute_group *pma_table; 61 struct attribute_group *hw_stats_ag; 62 struct rdma_hw_stats *hw_stats; 63 u8 port_num; 64 }; 65 66 struct port_attribute { 67 struct attribute attr; 68 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf); 69 ssize_t (*store)(struct ib_port *, struct port_attribute *, 70 const char *buf, size_t count); 71 }; 72 73 #define PORT_ATTR(_name, _mode, _show, _store) \ 74 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 75 76 #define PORT_ATTR_RO(_name) \ 77 struct port_attribute port_attr_##_name = __ATTR_RO(_name) 78 79 struct port_table_attribute { 80 struct port_attribute attr; 81 char name[8]; 82 int index; 83 __be16 attr_id; 84 }; 85 86 struct hw_stats_attribute { 87 struct attribute attr; 88 ssize_t (*show)(struct kobject *kobj, 89 struct attribute *attr, char *buf); 90 ssize_t (*store)(struct kobject *kobj, 91 struct attribute *attr, 92 const char *buf, 93 size_t count); 94 int index; 95 u8 port_num; 96 }; 97 98 static ssize_t port_attr_show(struct kobject *kobj, 99 struct attribute *attr, char *buf) 100 { 101 struct port_attribute *port_attr = 102 container_of(attr, struct port_attribute, attr); 103 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 104 105 if (!port_attr->show) 106 return -EIO; 107 108 return port_attr->show(p, port_attr, buf); 109 } 110 111 static const struct sysfs_ops port_sysfs_ops = { 112 .show = port_attr_show 113 }; 114 115 static ssize_t gid_attr_show(struct kobject *kobj, 116 struct attribute *attr, char *buf) 117 { 118 struct port_attribute *port_attr = 119 container_of(attr, struct port_attribute, attr); 120 struct ib_port *p = container_of(kobj, struct gid_attr_group, 121 kobj)->port; 122 123 if (!port_attr->show) 124 return -EIO; 125 126 return port_attr->show(p, port_attr, buf); 127 } 128 129 static const struct sysfs_ops gid_attr_sysfs_ops = { 130 .show = gid_attr_show 131 }; 132 133 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused, 134 char *buf) 135 { 136 struct ib_port_attr attr; 137 ssize_t ret; 138 139 static const char *state_name[] = { 140 [IB_PORT_NOP] = "NOP", 141 [IB_PORT_DOWN] = "DOWN", 142 [IB_PORT_INIT] = "INIT", 143 [IB_PORT_ARMED] = "ARMED", 144 [IB_PORT_ACTIVE] = "ACTIVE", 145 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER" 146 }; 147 148 ret = ib_query_port(p->ibdev, p->port_num, &attr); 149 if (ret) 150 return ret; 151 152 return sprintf(buf, "%d: %s\n", attr.state, 153 attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ? 154 state_name[attr.state] : "UNKNOWN"); 155 } 156 157 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused, 158 char *buf) 159 { 160 struct ib_port_attr attr; 161 ssize_t ret; 162 163 ret = ib_query_port(p->ibdev, p->port_num, &attr); 164 if (ret) 165 return ret; 166 167 return sprintf(buf, "0x%x\n", attr.lid); 168 } 169 170 static ssize_t lid_mask_count_show(struct ib_port *p, 171 struct port_attribute *unused, 172 char *buf) 173 { 174 struct ib_port_attr attr; 175 ssize_t ret; 176 177 ret = ib_query_port(p->ibdev, p->port_num, &attr); 178 if (ret) 179 return ret; 180 181 return sprintf(buf, "%d\n", attr.lmc); 182 } 183 184 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused, 185 char *buf) 186 { 187 struct ib_port_attr attr; 188 ssize_t ret; 189 190 ret = ib_query_port(p->ibdev, p->port_num, &attr); 191 if (ret) 192 return ret; 193 194 return sprintf(buf, "0x%x\n", attr.sm_lid); 195 } 196 197 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused, 198 char *buf) 199 { 200 struct ib_port_attr attr; 201 ssize_t ret; 202 203 ret = ib_query_port(p->ibdev, p->port_num, &attr); 204 if (ret) 205 return ret; 206 207 return sprintf(buf, "%d\n", attr.sm_sl); 208 } 209 210 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused, 211 char *buf) 212 { 213 struct ib_port_attr attr; 214 ssize_t ret; 215 216 ret = ib_query_port(p->ibdev, p->port_num, &attr); 217 if (ret) 218 return ret; 219 220 return sprintf(buf, "0x%08x\n", attr.port_cap_flags); 221 } 222 223 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, 224 char *buf) 225 { 226 struct ib_port_attr attr; 227 char *speed = ""; 228 int rate; /* in deci-Gb/sec */ 229 ssize_t ret; 230 231 ret = ib_query_port(p->ibdev, p->port_num, &attr); 232 if (ret) 233 return ret; 234 235 switch (attr.active_speed) { 236 case IB_SPEED_DDR: 237 speed = " DDR"; 238 rate = 50; 239 break; 240 case IB_SPEED_QDR: 241 speed = " QDR"; 242 rate = 100; 243 break; 244 case IB_SPEED_FDR10: 245 speed = " FDR10"; 246 rate = 100; 247 break; 248 case IB_SPEED_FDR: 249 speed = " FDR"; 250 rate = 140; 251 break; 252 case IB_SPEED_EDR: 253 speed = " EDR"; 254 rate = 250; 255 break; 256 case IB_SPEED_HDR: 257 speed = " HDR"; 258 rate = 500; 259 break; 260 case IB_SPEED_SDR: 261 default: /* default to SDR for invalid rates */ 262 rate = 25; 263 break; 264 } 265 266 rate *= ib_width_enum_to_int(attr.active_width); 267 if (rate < 0) 268 return -EINVAL; 269 270 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 271 rate / 10, rate % 10 ? ".5" : "", 272 ib_width_enum_to_int(attr.active_width), speed); 273 } 274 275 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 276 char *buf) 277 { 278 struct ib_port_attr attr; 279 280 ssize_t ret; 281 282 ret = ib_query_port(p->ibdev, p->port_num, &attr); 283 if (ret) 284 return ret; 285 286 switch (attr.phys_state) { 287 case 1: return sprintf(buf, "1: Sleep\n"); 288 case 2: return sprintf(buf, "2: Polling\n"); 289 case 3: return sprintf(buf, "3: Disabled\n"); 290 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 291 case 5: return sprintf(buf, "5: LinkUp\n"); 292 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 293 case 7: return sprintf(buf, "7: Phy Test\n"); 294 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 295 } 296 } 297 298 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 299 char *buf) 300 { 301 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 302 case IB_LINK_LAYER_INFINIBAND: 303 return sprintf(buf, "%s\n", "InfiniBand"); 304 case IB_LINK_LAYER_ETHERNET: 305 return sprintf(buf, "%s\n", "Ethernet"); 306 default: 307 return sprintf(buf, "%s\n", "Unknown"); 308 } 309 } 310 311 static PORT_ATTR_RO(state); 312 static PORT_ATTR_RO(lid); 313 static PORT_ATTR_RO(lid_mask_count); 314 static PORT_ATTR_RO(sm_lid); 315 static PORT_ATTR_RO(sm_sl); 316 static PORT_ATTR_RO(cap_mask); 317 static PORT_ATTR_RO(rate); 318 static PORT_ATTR_RO(phys_state); 319 static PORT_ATTR_RO(link_layer); 320 321 static struct attribute *port_default_attrs[] = { 322 &port_attr_state.attr, 323 &port_attr_lid.attr, 324 &port_attr_lid_mask_count.attr, 325 &port_attr_sm_lid.attr, 326 &port_attr_sm_sl.attr, 327 &port_attr_cap_mask.attr, 328 &port_attr_rate.attr, 329 &port_attr_phys_state.attr, 330 &port_attr_link_layer.attr, 331 NULL 332 }; 333 334 static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf) 335 { 336 if (!gid_attr->ndev) 337 return -EINVAL; 338 339 return sprintf(buf, "%s\n", gid_attr->ndev->name); 340 } 341 342 static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf) 343 { 344 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type)); 345 } 346 347 static ssize_t _show_port_gid_attr(struct ib_port *p, 348 struct port_attribute *attr, 349 char *buf, 350 size_t (*print)(struct ib_gid_attr *gid_attr, 351 char *buf)) 352 { 353 struct port_table_attribute *tab_attr = 354 container_of(attr, struct port_table_attribute, attr); 355 union ib_gid gid; 356 struct ib_gid_attr gid_attr = {}; 357 ssize_t ret; 358 359 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, 360 &gid_attr); 361 if (ret) 362 goto err; 363 364 ret = print(&gid_attr, buf); 365 366 err: 367 if (gid_attr.ndev) 368 dev_put(gid_attr.ndev); 369 return ret; 370 } 371 372 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 373 char *buf) 374 { 375 struct port_table_attribute *tab_attr = 376 container_of(attr, struct port_table_attribute, attr); 377 union ib_gid gid; 378 ssize_t ret; 379 380 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL); 381 if (ret) 382 return ret; 383 384 return sprintf(buf, "%pI6\n", gid.raw); 385 } 386 387 static ssize_t show_port_gid_attr_ndev(struct ib_port *p, 388 struct port_attribute *attr, char *buf) 389 { 390 return _show_port_gid_attr(p, attr, buf, print_ndev); 391 } 392 393 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p, 394 struct port_attribute *attr, 395 char *buf) 396 { 397 return _show_port_gid_attr(p, attr, buf, print_gid_type); 398 } 399 400 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 401 char *buf) 402 { 403 struct port_table_attribute *tab_attr = 404 container_of(attr, struct port_table_attribute, attr); 405 u16 pkey; 406 ssize_t ret; 407 408 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 409 if (ret) 410 return ret; 411 412 return sprintf(buf, "0x%04x\n", pkey); 413 } 414 415 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 416 struct port_table_attribute port_pma_attr_##_name = { \ 417 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 418 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \ 419 .attr_id = IB_PMA_PORT_COUNTERS , \ 420 } 421 422 #define PORT_PMA_ATTR_EXT(_name, _width, _offset) \ 423 struct port_table_attribute port_pma_attr_ext_##_name = { \ 424 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 425 .index = (_offset) | ((_width) << 16), \ 426 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \ 427 } 428 429 /* 430 * Get a Perfmgmt MAD block of data. 431 * Returns error code or the number of bytes retrieved. 432 */ 433 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr, 434 void *data, int offset, size_t size) 435 { 436 struct ib_mad *in_mad; 437 struct ib_mad *out_mad; 438 size_t mad_size = sizeof(*out_mad); 439 u16 out_mad_pkey_index = 0; 440 ssize_t ret; 441 442 if (!dev->process_mad) 443 return -ENOSYS; 444 445 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 446 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 447 if (!in_mad || !out_mad) { 448 ret = -ENOMEM; 449 goto out; 450 } 451 452 in_mad->mad_hdr.base_version = 1; 453 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 454 in_mad->mad_hdr.class_version = 1; 455 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 456 in_mad->mad_hdr.attr_id = attr; 457 458 if (attr != IB_PMA_CLASS_PORT_INFO) 459 in_mad->data[41] = port_num; /* PortSelect field */ 460 461 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY, 462 port_num, NULL, NULL, 463 (const struct ib_mad_hdr *)in_mad, mad_size, 464 (struct ib_mad_hdr *)out_mad, &mad_size, 465 &out_mad_pkey_index) & 466 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 467 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 468 ret = -EINVAL; 469 goto out; 470 } 471 memcpy(data, out_mad->data + offset, size); 472 ret = size; 473 out: 474 kfree(in_mad); 475 kfree(out_mad); 476 return ret; 477 } 478 479 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 480 char *buf) 481 { 482 struct port_table_attribute *tab_attr = 483 container_of(attr, struct port_table_attribute, attr); 484 int offset = tab_attr->index & 0xffff; 485 int width = (tab_attr->index >> 16) & 0xff; 486 ssize_t ret; 487 u8 data[8]; 488 489 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data, 490 40 + offset / 8, sizeof(data)); 491 if (ret < 0) 492 return sprintf(buf, "N/A (no PMA)\n"); 493 494 switch (width) { 495 case 4: 496 ret = sprintf(buf, "%u\n", (*data >> 497 (4 - (offset % 8))) & 0xf); 498 break; 499 case 8: 500 ret = sprintf(buf, "%u\n", *data); 501 break; 502 case 16: 503 ret = sprintf(buf, "%u\n", 504 be16_to_cpup((__be16 *)data)); 505 break; 506 case 32: 507 ret = sprintf(buf, "%u\n", 508 be32_to_cpup((__be32 *)data)); 509 break; 510 case 64: 511 ret = sprintf(buf, "%llu\n", 512 be64_to_cpup((__be64 *)data)); 513 break; 514 515 default: 516 ret = 0; 517 } 518 519 return ret; 520 } 521 522 static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 523 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 524 static PORT_PMA_ATTR(link_downed , 2, 8, 56); 525 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 526 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 527 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 528 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 529 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 530 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 531 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 532 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 533 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 534 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 535 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 536 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 537 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 538 static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320); 539 540 /* 541 * Counters added by extended set 542 */ 543 static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64); 544 static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128); 545 static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192); 546 static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256); 547 static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320); 548 static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384); 549 static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448); 550 static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512); 551 552 static struct attribute *pma_attrs[] = { 553 &port_pma_attr_symbol_error.attr.attr, 554 &port_pma_attr_link_error_recovery.attr.attr, 555 &port_pma_attr_link_downed.attr.attr, 556 &port_pma_attr_port_rcv_errors.attr.attr, 557 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 558 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 559 &port_pma_attr_port_xmit_discards.attr.attr, 560 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 561 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 562 &port_pma_attr_local_link_integrity_errors.attr.attr, 563 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 564 &port_pma_attr_VL15_dropped.attr.attr, 565 &port_pma_attr_port_xmit_data.attr.attr, 566 &port_pma_attr_port_rcv_data.attr.attr, 567 &port_pma_attr_port_xmit_packets.attr.attr, 568 &port_pma_attr_port_rcv_packets.attr.attr, 569 &port_pma_attr_port_xmit_wait.attr.attr, 570 NULL 571 }; 572 573 static struct attribute *pma_attrs_ext[] = { 574 &port_pma_attr_symbol_error.attr.attr, 575 &port_pma_attr_link_error_recovery.attr.attr, 576 &port_pma_attr_link_downed.attr.attr, 577 &port_pma_attr_port_rcv_errors.attr.attr, 578 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 579 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 580 &port_pma_attr_port_xmit_discards.attr.attr, 581 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 582 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 583 &port_pma_attr_local_link_integrity_errors.attr.attr, 584 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 585 &port_pma_attr_VL15_dropped.attr.attr, 586 &port_pma_attr_ext_port_xmit_data.attr.attr, 587 &port_pma_attr_ext_port_rcv_data.attr.attr, 588 &port_pma_attr_ext_port_xmit_packets.attr.attr, 589 &port_pma_attr_port_xmit_wait.attr.attr, 590 &port_pma_attr_ext_port_rcv_packets.attr.attr, 591 &port_pma_attr_ext_unicast_rcv_packets.attr.attr, 592 &port_pma_attr_ext_unicast_xmit_packets.attr.attr, 593 &port_pma_attr_ext_multicast_rcv_packets.attr.attr, 594 &port_pma_attr_ext_multicast_xmit_packets.attr.attr, 595 NULL 596 }; 597 598 static struct attribute *pma_attrs_noietf[] = { 599 &port_pma_attr_symbol_error.attr.attr, 600 &port_pma_attr_link_error_recovery.attr.attr, 601 &port_pma_attr_link_downed.attr.attr, 602 &port_pma_attr_port_rcv_errors.attr.attr, 603 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 604 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 605 &port_pma_attr_port_xmit_discards.attr.attr, 606 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 607 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 608 &port_pma_attr_local_link_integrity_errors.attr.attr, 609 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 610 &port_pma_attr_VL15_dropped.attr.attr, 611 &port_pma_attr_ext_port_xmit_data.attr.attr, 612 &port_pma_attr_ext_port_rcv_data.attr.attr, 613 &port_pma_attr_ext_port_xmit_packets.attr.attr, 614 &port_pma_attr_ext_port_rcv_packets.attr.attr, 615 &port_pma_attr_port_xmit_wait.attr.attr, 616 NULL 617 }; 618 619 static struct attribute_group pma_group = { 620 .name = "counters", 621 .attrs = pma_attrs 622 }; 623 624 static struct attribute_group pma_group_ext = { 625 .name = "counters", 626 .attrs = pma_attrs_ext 627 }; 628 629 static struct attribute_group pma_group_noietf = { 630 .name = "counters", 631 .attrs = pma_attrs_noietf 632 }; 633 634 static void ib_port_release(struct kobject *kobj) 635 { 636 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 637 struct attribute *a; 638 int i; 639 640 if (p->gid_group.attrs) { 641 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 642 kfree(a); 643 644 kfree(p->gid_group.attrs); 645 } 646 647 if (p->pkey_group.attrs) { 648 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 649 kfree(a); 650 651 kfree(p->pkey_group.attrs); 652 } 653 654 kfree(p); 655 } 656 657 static void ib_port_gid_attr_release(struct kobject *kobj) 658 { 659 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group, 660 kobj); 661 struct attribute *a; 662 int i; 663 664 if (g->ndev.attrs) { 665 for (i = 0; (a = g->ndev.attrs[i]); ++i) 666 kfree(a); 667 668 kfree(g->ndev.attrs); 669 } 670 671 if (g->type.attrs) { 672 for (i = 0; (a = g->type.attrs[i]); ++i) 673 kfree(a); 674 675 kfree(g->type.attrs); 676 } 677 678 kfree(g); 679 } 680 681 static struct kobj_type port_type = { 682 .release = ib_port_release, 683 .sysfs_ops = &port_sysfs_ops, 684 .default_attrs = port_default_attrs 685 }; 686 687 static struct kobj_type gid_attr_type = { 688 .sysfs_ops = &gid_attr_sysfs_ops, 689 .release = ib_port_gid_attr_release 690 }; 691 692 static struct attribute ** 693 alloc_group_attrs(ssize_t (*show)(struct ib_port *, 694 struct port_attribute *, char *buf), 695 int len) 696 { 697 struct attribute **tab_attr; 698 struct port_table_attribute *element; 699 int i; 700 701 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 702 if (!tab_attr) 703 return NULL; 704 705 for (i = 0; i < len; i++) { 706 element = kzalloc(sizeof(struct port_table_attribute), 707 GFP_KERNEL); 708 if (!element) 709 goto err; 710 711 if (snprintf(element->name, sizeof(element->name), 712 "%d", i) >= sizeof(element->name)) { 713 kfree(element); 714 goto err; 715 } 716 717 element->attr.attr.name = element->name; 718 element->attr.attr.mode = S_IRUGO; 719 element->attr.show = show; 720 element->index = i; 721 sysfs_attr_init(&element->attr.attr); 722 723 tab_attr[i] = &element->attr.attr; 724 } 725 726 return tab_attr; 727 728 err: 729 while (--i >= 0) 730 kfree(tab_attr[i]); 731 kfree(tab_attr); 732 return NULL; 733 } 734 735 /* 736 * Figure out which counter table to use depending on 737 * the device capabilities. 738 */ 739 static struct attribute_group *get_counter_table(struct ib_device *dev, 740 int port_num) 741 { 742 struct ib_class_port_info cpi; 743 744 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO, 745 &cpi, 40, sizeof(cpi)) >= 0) { 746 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH) 747 /* We have extended counters */ 748 return &pma_group_ext; 749 750 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) 751 /* But not the IETF ones */ 752 return &pma_group_noietf; 753 } 754 755 /* Fall back to normal counters */ 756 return &pma_group; 757 } 758 759 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats, 760 u8 port_num, int index) 761 { 762 int ret; 763 764 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan)) 765 return 0; 766 ret = dev->get_hw_stats(dev, stats, port_num, index); 767 if (ret < 0) 768 return ret; 769 if (ret == stats->num_counters) 770 stats->timestamp = jiffies; 771 772 return 0; 773 } 774 775 static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf) 776 { 777 return sprintf(buf, "%llu\n", stats->value[index]); 778 } 779 780 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr, 781 char *buf) 782 { 783 struct ib_device *dev; 784 struct ib_port *port; 785 struct hw_stats_attribute *hsa; 786 struct rdma_hw_stats *stats; 787 int ret; 788 789 hsa = container_of(attr, struct hw_stats_attribute, attr); 790 if (!hsa->port_num) { 791 dev = container_of((struct device *)kobj, 792 struct ib_device, dev); 793 stats = dev->hw_stats; 794 } else { 795 port = container_of(kobj, struct ib_port, kobj); 796 dev = port->ibdev; 797 stats = port->hw_stats; 798 } 799 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index); 800 if (ret) 801 return ret; 802 return print_hw_stat(stats, hsa->index, buf); 803 } 804 805 static ssize_t show_stats_lifespan(struct kobject *kobj, 806 struct attribute *attr, 807 char *buf) 808 { 809 struct hw_stats_attribute *hsa; 810 int msecs; 811 812 hsa = container_of(attr, struct hw_stats_attribute, attr); 813 if (!hsa->port_num) { 814 struct ib_device *dev = container_of((struct device *)kobj, 815 struct ib_device, dev); 816 msecs = jiffies_to_msecs(dev->hw_stats->lifespan); 817 } else { 818 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 819 msecs = jiffies_to_msecs(p->hw_stats->lifespan); 820 } 821 return sprintf(buf, "%d\n", msecs); 822 } 823 824 static ssize_t set_stats_lifespan(struct kobject *kobj, 825 struct attribute *attr, 826 const char *buf, size_t count) 827 { 828 struct hw_stats_attribute *hsa; 829 int msecs; 830 int jiffies; 831 int ret; 832 833 ret = kstrtoint(buf, 10, &msecs); 834 if (ret) 835 return ret; 836 if (msecs < 0 || msecs > 10000) 837 return -EINVAL; 838 jiffies = msecs_to_jiffies(msecs); 839 hsa = container_of(attr, struct hw_stats_attribute, attr); 840 if (!hsa->port_num) { 841 struct ib_device *dev = container_of((struct device *)kobj, 842 struct ib_device, dev); 843 dev->hw_stats->lifespan = jiffies; 844 } else { 845 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 846 p->hw_stats->lifespan = jiffies; 847 } 848 return count; 849 } 850 851 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group) 852 { 853 struct attribute **attr; 854 855 sysfs_remove_group(kobj, attr_group); 856 857 for (attr = attr_group->attrs; *attr; attr++) 858 kfree(*attr); 859 kfree(attr_group); 860 } 861 862 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name) 863 { 864 struct hw_stats_attribute *hsa; 865 866 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 867 if (!hsa) 868 return NULL; 869 870 hsa->attr.name = (char *)name; 871 hsa->attr.mode = S_IRUGO; 872 hsa->show = show_hw_stats; 873 hsa->store = NULL; 874 hsa->index = index; 875 hsa->port_num = port_num; 876 877 return &hsa->attr; 878 } 879 880 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num) 881 { 882 struct hw_stats_attribute *hsa; 883 884 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 885 if (!hsa) 886 return NULL; 887 888 hsa->attr.name = name; 889 hsa->attr.mode = S_IWUSR | S_IRUGO; 890 hsa->show = show_stats_lifespan; 891 hsa->store = set_stats_lifespan; 892 hsa->index = 0; 893 hsa->port_num = port_num; 894 895 return &hsa->attr; 896 } 897 898 static void setup_hw_stats(struct ib_device *device, struct ib_port *port, 899 u8 port_num) 900 { 901 struct attribute_group *hsag; 902 struct rdma_hw_stats *stats; 903 int i, ret; 904 905 stats = device->alloc_hw_stats(device, port_num); 906 907 if (!stats) 908 return; 909 910 if (!stats->names || stats->num_counters <= 0) 911 goto err_free_stats; 912 913 /* 914 * Two extra attribue elements here, one for the lifespan entry and 915 * one to NULL terminate the list for the sysfs core code 916 */ 917 hsag = kzalloc(sizeof(*hsag) + 918 sizeof(void *) * (stats->num_counters + 2), 919 GFP_KERNEL); 920 if (!hsag) 921 goto err_free_stats; 922 923 ret = device->get_hw_stats(device, stats, port_num, 924 stats->num_counters); 925 if (ret != stats->num_counters) 926 goto err_free_hsag; 927 928 stats->timestamp = jiffies; 929 930 hsag->name = "hw_counters"; 931 hsag->attrs = (void *)hsag + sizeof(*hsag); 932 933 for (i = 0; i < stats->num_counters; i++) { 934 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]); 935 if (!hsag->attrs[i]) 936 goto err; 937 sysfs_attr_init(hsag->attrs[i]); 938 } 939 940 /* treat an error here as non-fatal */ 941 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num); 942 if (hsag->attrs[i]) 943 sysfs_attr_init(hsag->attrs[i]); 944 945 if (port) { 946 struct kobject *kobj = &port->kobj; 947 ret = sysfs_create_group(kobj, hsag); 948 if (ret) 949 goto err; 950 port->hw_stats_ag = hsag; 951 port->hw_stats = stats; 952 } else { 953 struct kobject *kobj = &device->dev.kobj; 954 ret = sysfs_create_group(kobj, hsag); 955 if (ret) 956 goto err; 957 device->hw_stats_ag = hsag; 958 device->hw_stats = stats; 959 } 960 961 return; 962 963 err: 964 for (; i >= 0; i--) 965 kfree(hsag->attrs[i]); 966 err_free_hsag: 967 kfree(hsag); 968 err_free_stats: 969 kfree(stats); 970 return; 971 } 972 973 static int add_port(struct ib_device *device, int port_num, 974 int (*port_callback)(struct ib_device *, 975 u8, struct kobject *)) 976 { 977 struct ib_port *p; 978 struct ib_port_attr attr; 979 int i; 980 int ret; 981 982 ret = ib_query_port(device, port_num, &attr); 983 if (ret) 984 return ret; 985 986 p = kzalloc(sizeof *p, GFP_KERNEL); 987 if (!p) 988 return -ENOMEM; 989 990 p->ibdev = device; 991 p->port_num = port_num; 992 993 ret = kobject_init_and_add(&p->kobj, &port_type, 994 device->ports_parent, 995 "%d", port_num); 996 if (ret) { 997 kfree(p); 998 return ret; 999 } 1000 1001 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL); 1002 if (!p->gid_attr_group) { 1003 ret = -ENOMEM; 1004 goto err_put; 1005 } 1006 1007 p->gid_attr_group->port = p; 1008 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type, 1009 &p->kobj, "gid_attrs"); 1010 if (ret) { 1011 kfree(p->gid_attr_group); 1012 goto err_put; 1013 } 1014 1015 p->pma_table = get_counter_table(device, port_num); 1016 ret = sysfs_create_group(&p->kobj, p->pma_table); 1017 if (ret) 1018 goto err_put_gid_attrs; 1019 1020 p->gid_group.name = "gids"; 1021 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 1022 if (!p->gid_group.attrs) { 1023 ret = -ENOMEM; 1024 goto err_remove_pma; 1025 } 1026 1027 ret = sysfs_create_group(&p->kobj, &p->gid_group); 1028 if (ret) 1029 goto err_free_gid; 1030 1031 p->gid_attr_group->ndev.name = "ndevs"; 1032 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev, 1033 attr.gid_tbl_len); 1034 if (!p->gid_attr_group->ndev.attrs) { 1035 ret = -ENOMEM; 1036 goto err_remove_gid; 1037 } 1038 1039 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1040 &p->gid_attr_group->ndev); 1041 if (ret) 1042 goto err_free_gid_ndev; 1043 1044 p->gid_attr_group->type.name = "types"; 1045 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type, 1046 attr.gid_tbl_len); 1047 if (!p->gid_attr_group->type.attrs) { 1048 ret = -ENOMEM; 1049 goto err_remove_gid_ndev; 1050 } 1051 1052 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1053 &p->gid_attr_group->type); 1054 if (ret) 1055 goto err_free_gid_type; 1056 1057 p->pkey_group.name = "pkeys"; 1058 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 1059 attr.pkey_tbl_len); 1060 if (!p->pkey_group.attrs) { 1061 ret = -ENOMEM; 1062 goto err_remove_gid_type; 1063 } 1064 1065 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 1066 if (ret) 1067 goto err_free_pkey; 1068 1069 if (port_callback) { 1070 ret = port_callback(device, port_num, &p->kobj); 1071 if (ret) 1072 goto err_remove_pkey; 1073 } 1074 1075 /* 1076 * If port == 0, it means we have only one port and the parent 1077 * device, not this port device, should be the holder of the 1078 * hw_counters 1079 */ 1080 if (device->alloc_hw_stats && port_num) 1081 setup_hw_stats(device, p, port_num); 1082 1083 list_add_tail(&p->kobj.entry, &device->port_list); 1084 1085 kobject_uevent(&p->kobj, KOBJ_ADD); 1086 return 0; 1087 1088 err_remove_pkey: 1089 sysfs_remove_group(&p->kobj, &p->pkey_group); 1090 1091 err_free_pkey: 1092 for (i = 0; i < attr.pkey_tbl_len; ++i) 1093 kfree(p->pkey_group.attrs[i]); 1094 1095 kfree(p->pkey_group.attrs); 1096 p->pkey_group.attrs = NULL; 1097 1098 err_remove_gid_type: 1099 sysfs_remove_group(&p->gid_attr_group->kobj, 1100 &p->gid_attr_group->type); 1101 1102 err_free_gid_type: 1103 for (i = 0; i < attr.gid_tbl_len; ++i) 1104 kfree(p->gid_attr_group->type.attrs[i]); 1105 1106 kfree(p->gid_attr_group->type.attrs); 1107 p->gid_attr_group->type.attrs = NULL; 1108 1109 err_remove_gid_ndev: 1110 sysfs_remove_group(&p->gid_attr_group->kobj, 1111 &p->gid_attr_group->ndev); 1112 1113 err_free_gid_ndev: 1114 for (i = 0; i < attr.gid_tbl_len; ++i) 1115 kfree(p->gid_attr_group->ndev.attrs[i]); 1116 1117 kfree(p->gid_attr_group->ndev.attrs); 1118 p->gid_attr_group->ndev.attrs = NULL; 1119 1120 err_remove_gid: 1121 sysfs_remove_group(&p->kobj, &p->gid_group); 1122 1123 err_free_gid: 1124 for (i = 0; i < attr.gid_tbl_len; ++i) 1125 kfree(p->gid_group.attrs[i]); 1126 1127 kfree(p->gid_group.attrs); 1128 p->gid_group.attrs = NULL; 1129 1130 err_remove_pma: 1131 sysfs_remove_group(&p->kobj, p->pma_table); 1132 1133 err_put_gid_attrs: 1134 kobject_put(&p->gid_attr_group->kobj); 1135 1136 err_put: 1137 kobject_put(&p->kobj); 1138 return ret; 1139 } 1140 1141 static ssize_t show_node_type(struct device *device, 1142 struct device_attribute *attr, char *buf) 1143 { 1144 struct ib_device *dev = container_of(device, struct ib_device, dev); 1145 1146 switch (dev->node_type) { 1147 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 1148 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 1149 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); 1150 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); 1151 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 1152 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 1153 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 1154 } 1155 } 1156 1157 static ssize_t show_sys_image_guid(struct device *device, 1158 struct device_attribute *dev_attr, char *buf) 1159 { 1160 struct ib_device *dev = container_of(device, struct ib_device, dev); 1161 1162 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1163 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]), 1164 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]), 1165 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]), 1166 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3])); 1167 } 1168 1169 static ssize_t show_node_guid(struct device *device, 1170 struct device_attribute *attr, char *buf) 1171 { 1172 struct ib_device *dev = container_of(device, struct ib_device, dev); 1173 1174 return sprintf(buf, "%04x:%04x:%04x:%04x\n", 1175 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 1176 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 1177 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 1178 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 1179 } 1180 1181 static ssize_t show_node_desc(struct device *device, 1182 struct device_attribute *attr, char *buf) 1183 { 1184 struct ib_device *dev = container_of(device, struct ib_device, dev); 1185 1186 return sprintf(buf, "%.64s\n", dev->node_desc); 1187 } 1188 1189 static ssize_t set_node_desc(struct device *device, 1190 struct device_attribute *attr, 1191 const char *buf, size_t count) 1192 { 1193 struct ib_device *dev = container_of(device, struct ib_device, dev); 1194 struct ib_device_modify desc = {}; 1195 int ret; 1196 1197 if (!dev->modify_device) 1198 return -EIO; 1199 1200 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX)); 1201 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 1202 if (ret) 1203 return ret; 1204 1205 return count; 1206 } 1207 1208 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1209 char *buf) 1210 { 1211 struct ib_device *dev = container_of(device, struct ib_device, dev); 1212 1213 ib_get_device_fw_str(dev, buf); 1214 strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX); 1215 return strlen(buf); 1216 } 1217 1218 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 1219 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 1220 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 1221 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 1222 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1223 1224 static struct device_attribute *ib_class_attributes[] = { 1225 &dev_attr_node_type, 1226 &dev_attr_sys_image_guid, 1227 &dev_attr_node_guid, 1228 &dev_attr_node_desc, 1229 &dev_attr_fw_ver, 1230 }; 1231 1232 static void free_port_list_attributes(struct ib_device *device) 1233 { 1234 struct kobject *p, *t; 1235 1236 list_for_each_entry_safe(p, t, &device->port_list, entry) { 1237 struct ib_port *port = container_of(p, struct ib_port, kobj); 1238 list_del(&p->entry); 1239 if (port->hw_stats) { 1240 kfree(port->hw_stats); 1241 free_hsag(&port->kobj, port->hw_stats_ag); 1242 } 1243 sysfs_remove_group(p, port->pma_table); 1244 sysfs_remove_group(p, &port->pkey_group); 1245 sysfs_remove_group(p, &port->gid_group); 1246 sysfs_remove_group(&port->gid_attr_group->kobj, 1247 &port->gid_attr_group->ndev); 1248 sysfs_remove_group(&port->gid_attr_group->kobj, 1249 &port->gid_attr_group->type); 1250 kobject_put(&port->gid_attr_group->kobj); 1251 kobject_put(p); 1252 } 1253 1254 kobject_put(device->ports_parent); 1255 } 1256 1257 int ib_device_register_sysfs(struct ib_device *device, 1258 int (*port_callback)(struct ib_device *, 1259 u8, struct kobject *)) 1260 { 1261 struct device *class_dev = &device->dev; 1262 int ret; 1263 int i; 1264 1265 WARN_ON_ONCE(!device->dev.parent); 1266 ret = dev_set_name(class_dev, "%s", device->name); 1267 if (ret) 1268 return ret; 1269 1270 ret = device_add(class_dev); 1271 if (ret) 1272 goto err; 1273 1274 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 1275 ret = device_create_file(class_dev, ib_class_attributes[i]); 1276 if (ret) 1277 goto err_unregister; 1278 } 1279 1280 device->ports_parent = kobject_create_and_add("ports", 1281 &class_dev->kobj); 1282 if (!device->ports_parent) { 1283 ret = -ENOMEM; 1284 goto err_put; 1285 } 1286 1287 if (rdma_cap_ib_switch(device)) { 1288 ret = add_port(device, 0, port_callback); 1289 if (ret) 1290 goto err_put; 1291 } else { 1292 for (i = 1; i <= device->phys_port_cnt; ++i) { 1293 ret = add_port(device, i, port_callback); 1294 if (ret) 1295 goto err_put; 1296 } 1297 } 1298 1299 if (device->alloc_hw_stats) 1300 setup_hw_stats(device, NULL, 0); 1301 1302 return 0; 1303 1304 err_put: 1305 free_port_list_attributes(device); 1306 1307 err_unregister: 1308 device_del(class_dev); 1309 1310 err: 1311 return ret; 1312 } 1313 1314 void ib_device_unregister_sysfs(struct ib_device *device) 1315 { 1316 int i; 1317 1318 /* Hold kobject until ib_dealloc_device() */ 1319 kobject_get(&device->dev.kobj); 1320 1321 free_port_list_attributes(device); 1322 1323 if (device->hw_stats) { 1324 kfree(device->hw_stats); 1325 free_hsag(&device->dev.kobj, device->hw_stats_ag); 1326 } 1327 1328 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) 1329 device_remove_file(&device->dev, ib_class_attributes[i]); 1330 1331 device_unregister(&device->dev); 1332 } 1333