ib_sysfs.c revision 331769
1/* 2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved. 4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35#include "core_priv.h" 36 37#include <linux/slab.h> 38#include <linux/string.h> 39#include <linux/netdevice.h> 40#include <linux/fs.h> 41#include <linux/printk.h> 42 43#include <rdma/ib_mad.h> 44#include <rdma/ib_pma.h> 45 46struct ib_port; 47 48struct gid_attr_group { 49 struct ib_port *port; 50 struct kobject kobj; 51 struct attribute_group ndev; 52 struct attribute_group type; 53}; 54struct 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 66struct 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) \ 74struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store) 75 76#define PORT_ATTR_RO(_name) \ 77struct port_attribute port_attr_##_name = __ATTR_RO(_name) 78 79struct port_table_attribute { 80 struct port_attribute attr; 81 char name[8]; 82 int index; 83 __be16 attr_id; 84}; 85 86struct 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 98static 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 111static const struct sysfs_ops port_sysfs_ops = { 112 .show = port_attr_show 113}; 114 115static 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 129static const struct sysfs_ops gid_attr_sysfs_ops = { 130 .show = gid_attr_show 131}; 132 133static 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 157static 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 170static 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 184static 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 197static 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 210static 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 223static 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_SDR: 257 default: /* default to SDR for invalid rates */ 258 rate = 25; 259 break; 260 } 261 262 rate *= ib_width_enum_to_int(attr.active_width); 263 if (rate < 0) 264 return -EINVAL; 265 266 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", 267 rate / 10, rate % 10 ? ".5" : "", 268 ib_width_enum_to_int(attr.active_width), speed); 269} 270 271static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused, 272 char *buf) 273{ 274 struct ib_port_attr attr; 275 276 ssize_t ret; 277 278 ret = ib_query_port(p->ibdev, p->port_num, &attr); 279 if (ret) 280 return ret; 281 282 switch (attr.phys_state) { 283 case 1: return sprintf(buf, "1: Sleep\n"); 284 case 2: return sprintf(buf, "2: Polling\n"); 285 case 3: return sprintf(buf, "3: Disabled\n"); 286 case 4: return sprintf(buf, "4: PortConfigurationTraining\n"); 287 case 5: return sprintf(buf, "5: LinkUp\n"); 288 case 6: return sprintf(buf, "6: LinkErrorRecovery\n"); 289 case 7: return sprintf(buf, "7: Phy Test\n"); 290 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state); 291 } 292} 293 294static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused, 295 char *buf) 296{ 297 switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) { 298 case IB_LINK_LAYER_INFINIBAND: 299 return sprintf(buf, "%s\n", "InfiniBand"); 300 case IB_LINK_LAYER_ETHERNET: 301 return sprintf(buf, "%s\n", "Ethernet"); 302 default: 303 return sprintf(buf, "%s\n", "Unknown"); 304 } 305} 306 307static PORT_ATTR_RO(state); 308static PORT_ATTR_RO(lid); 309static PORT_ATTR_RO(lid_mask_count); 310static PORT_ATTR_RO(sm_lid); 311static PORT_ATTR_RO(sm_sl); 312static PORT_ATTR_RO(cap_mask); 313static PORT_ATTR_RO(rate); 314static PORT_ATTR_RO(phys_state); 315static PORT_ATTR_RO(link_layer); 316 317static struct attribute *port_default_attrs[] = { 318 &port_attr_state.attr, 319 &port_attr_lid.attr, 320 &port_attr_lid_mask_count.attr, 321 &port_attr_sm_lid.attr, 322 &port_attr_sm_sl.attr, 323 &port_attr_cap_mask.attr, 324 &port_attr_rate.attr, 325 &port_attr_phys_state.attr, 326 &port_attr_link_layer.attr, 327 NULL 328}; 329 330static size_t print_ndev(struct ib_gid_attr *gid_attr, char *buf) 331{ 332 if (!gid_attr->ndev) 333 return -EINVAL; 334 335 return sprintf(buf, "%s\n", if_name(gid_attr->ndev)); 336} 337 338static size_t print_gid_type(struct ib_gid_attr *gid_attr, char *buf) 339{ 340 return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type)); 341} 342 343static ssize_t _show_port_gid_attr(struct ib_port *p, 344 struct port_attribute *attr, 345 char *buf, 346 size_t (*print)(struct ib_gid_attr *gid_attr, 347 char *buf)) 348{ 349 struct port_table_attribute *tab_attr = 350 container_of(attr, struct port_table_attribute, attr); 351 union ib_gid gid; 352 struct ib_gid_attr gid_attr = {}; 353 ssize_t ret; 354 355 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, 356 &gid_attr); 357 if (ret) 358 goto err; 359 360 ret = print(&gid_attr, buf); 361 362err: 363 if (gid_attr.ndev) 364 dev_put(gid_attr.ndev); 365 return ret; 366} 367 368static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr, 369 char *buf) 370{ 371 struct port_table_attribute *tab_attr = 372 container_of(attr, struct port_table_attribute, attr); 373 union ib_gid gid; 374 ssize_t ret; 375 376 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid, NULL); 377 if (ret) 378 return ret; 379 380 return sprintf(buf, GID_PRINT_FMT"\n", GID_PRINT_ARGS(gid.raw)); 381} 382 383static ssize_t show_port_gid_attr_ndev(struct ib_port *p, 384 struct port_attribute *attr, char *buf) 385{ 386 return _show_port_gid_attr(p, attr, buf, print_ndev); 387} 388 389static ssize_t show_port_gid_attr_gid_type(struct ib_port *p, 390 struct port_attribute *attr, 391 char *buf) 392{ 393 return _show_port_gid_attr(p, attr, buf, print_gid_type); 394} 395 396static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr, 397 char *buf) 398{ 399 struct port_table_attribute *tab_attr = 400 container_of(attr, struct port_table_attribute, attr); 401 u16 pkey; 402 ssize_t ret; 403 404 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey); 405 if (ret) 406 return ret; 407 408 return sprintf(buf, "0x%04x\n", pkey); 409} 410 411#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \ 412struct port_table_attribute port_pma_attr_##_name = { \ 413 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 414 .index = (_offset) | ((_width) << 16) | ((_counter) << 24), \ 415 .attr_id = IB_PMA_PORT_COUNTERS , \ 416} 417 418#define PORT_PMA_ATTR_EXT(_name, _width, _offset) \ 419struct port_table_attribute port_pma_attr_ext_##_name = { \ 420 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \ 421 .index = (_offset) | ((_width) << 16), \ 422 .attr_id = IB_PMA_PORT_COUNTERS_EXT , \ 423} 424 425/* 426 * Get a Perfmgmt MAD block of data. 427 * Returns error code or the number of bytes retrieved. 428 */ 429static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr, 430 void *data, int offset, size_t size) 431{ 432 struct ib_mad *in_mad; 433 struct ib_mad *out_mad; 434 size_t mad_size = sizeof(*out_mad); 435 u16 out_mad_pkey_index = 0; 436 ssize_t ret; 437 438 if (!dev->process_mad) 439 return -ENOSYS; 440 441 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 442 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 443 if (!in_mad || !out_mad) { 444 ret = -ENOMEM; 445 goto out; 446 } 447 448 in_mad->mad_hdr.base_version = 1; 449 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT; 450 in_mad->mad_hdr.class_version = 1; 451 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET; 452 in_mad->mad_hdr.attr_id = attr; 453 454 if (attr != IB_PMA_CLASS_PORT_INFO) 455 in_mad->data[41] = port_num; /* PortSelect field */ 456 457 if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY, 458 port_num, NULL, NULL, 459 (const struct ib_mad_hdr *)in_mad, mad_size, 460 (struct ib_mad_hdr *)out_mad, &mad_size, 461 &out_mad_pkey_index) & 462 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) != 463 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) { 464 ret = -EINVAL; 465 goto out; 466 } 467 memcpy(data, out_mad->data + offset, size); 468 ret = size; 469out: 470 kfree(in_mad); 471 kfree(out_mad); 472 return ret; 473} 474 475static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr, 476 char *buf) 477{ 478 struct port_table_attribute *tab_attr = 479 container_of(attr, struct port_table_attribute, attr); 480 int offset = tab_attr->index & 0xffff; 481 int width = (tab_attr->index >> 16) & 0xff; 482 ssize_t ret; 483 u8 data[8]; 484 485 ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data, 486 40 + offset / 8, sizeof(data)); 487 if (ret < 0) 488 return sprintf(buf, "N/A (no PMA)\n"); 489 490 switch (width) { 491 case 4: 492 ret = sprintf(buf, "%u\n", (*data >> 493 (4 - (offset % 8))) & 0xf); 494 break; 495 case 8: 496 ret = sprintf(buf, "%u\n", *data); 497 break; 498 case 16: 499 ret = sprintf(buf, "%u\n", 500 be16_to_cpup((__be16 *)data)); 501 break; 502 case 32: 503 ret = sprintf(buf, "%u\n", 504 be32_to_cpup((__be32 *)data)); 505 break; 506 case 64: 507 ret = sprintf(buf, "%llu\n", 508 (unsigned long long)be64_to_cpup((__be64 *)data)); 509 break; 510 511 default: 512 ret = 0; 513 } 514 515 return ret; 516} 517 518static PORT_PMA_ATTR(symbol_error , 0, 16, 32); 519static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48); 520static PORT_PMA_ATTR(link_downed , 2, 8, 56); 521static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64); 522static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80); 523static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96); 524static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112); 525static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128); 526static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136); 527static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152); 528static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156); 529static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176); 530static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192); 531static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224); 532static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256); 533static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288); 534static PORT_PMA_ATTR(port_xmit_wait , 0, 32, 320); 535 536/* 537 * Counters added by extended set 538 */ 539static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64); 540static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128); 541static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192); 542static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256); 543static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320); 544static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384); 545static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448); 546static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512); 547 548static struct attribute *pma_attrs[] = { 549 &port_pma_attr_symbol_error.attr.attr, 550 &port_pma_attr_link_error_recovery.attr.attr, 551 &port_pma_attr_link_downed.attr.attr, 552 &port_pma_attr_port_rcv_errors.attr.attr, 553 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 554 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 555 &port_pma_attr_port_xmit_discards.attr.attr, 556 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 557 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 558 &port_pma_attr_local_link_integrity_errors.attr.attr, 559 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 560 &port_pma_attr_VL15_dropped.attr.attr, 561 &port_pma_attr_port_xmit_data.attr.attr, 562 &port_pma_attr_port_rcv_data.attr.attr, 563 &port_pma_attr_port_xmit_packets.attr.attr, 564 &port_pma_attr_port_rcv_packets.attr.attr, 565 &port_pma_attr_port_xmit_wait.attr.attr, 566 NULL 567}; 568 569static struct attribute *pma_attrs_ext[] = { 570 &port_pma_attr_symbol_error.attr.attr, 571 &port_pma_attr_link_error_recovery.attr.attr, 572 &port_pma_attr_link_downed.attr.attr, 573 &port_pma_attr_port_rcv_errors.attr.attr, 574 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 575 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 576 &port_pma_attr_port_xmit_discards.attr.attr, 577 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 578 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 579 &port_pma_attr_local_link_integrity_errors.attr.attr, 580 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 581 &port_pma_attr_VL15_dropped.attr.attr, 582 &port_pma_attr_ext_port_xmit_data.attr.attr, 583 &port_pma_attr_ext_port_rcv_data.attr.attr, 584 &port_pma_attr_ext_port_xmit_packets.attr.attr, 585 &port_pma_attr_port_xmit_wait.attr.attr, 586 &port_pma_attr_ext_port_rcv_packets.attr.attr, 587 &port_pma_attr_ext_unicast_rcv_packets.attr.attr, 588 &port_pma_attr_ext_unicast_xmit_packets.attr.attr, 589 &port_pma_attr_ext_multicast_rcv_packets.attr.attr, 590 &port_pma_attr_ext_multicast_xmit_packets.attr.attr, 591 NULL 592}; 593 594static struct attribute *pma_attrs_noietf[] = { 595 &port_pma_attr_symbol_error.attr.attr, 596 &port_pma_attr_link_error_recovery.attr.attr, 597 &port_pma_attr_link_downed.attr.attr, 598 &port_pma_attr_port_rcv_errors.attr.attr, 599 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr, 600 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr, 601 &port_pma_attr_port_xmit_discards.attr.attr, 602 &port_pma_attr_port_xmit_constraint_errors.attr.attr, 603 &port_pma_attr_port_rcv_constraint_errors.attr.attr, 604 &port_pma_attr_local_link_integrity_errors.attr.attr, 605 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr, 606 &port_pma_attr_VL15_dropped.attr.attr, 607 &port_pma_attr_ext_port_xmit_data.attr.attr, 608 &port_pma_attr_ext_port_rcv_data.attr.attr, 609 &port_pma_attr_ext_port_xmit_packets.attr.attr, 610 &port_pma_attr_ext_port_rcv_packets.attr.attr, 611 &port_pma_attr_port_xmit_wait.attr.attr, 612 NULL 613}; 614 615static struct attribute_group pma_group = { 616 .name = "counters", 617 .attrs = pma_attrs 618}; 619 620static struct attribute_group pma_group_ext = { 621 .name = "counters", 622 .attrs = pma_attrs_ext 623}; 624 625static struct attribute_group pma_group_noietf = { 626 .name = "counters", 627 .attrs = pma_attrs_noietf 628}; 629 630static void ib_port_release(struct kobject *kobj) 631{ 632 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 633 struct attribute *a; 634 int i; 635 636 if (p->gid_group.attrs) { 637 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 638 kfree(a); 639 640 kfree(p->gid_group.attrs); 641 } 642 643 if (p->pkey_group.attrs) { 644 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 645 kfree(a); 646 647 kfree(p->pkey_group.attrs); 648 } 649 650 kfree(p); 651} 652 653static void ib_port_gid_attr_release(struct kobject *kobj) 654{ 655 struct gid_attr_group *g = container_of(kobj, struct gid_attr_group, 656 kobj); 657 struct attribute *a; 658 int i; 659 660 if (g->ndev.attrs) { 661 for (i = 0; (a = g->ndev.attrs[i]); ++i) 662 kfree(a); 663 664 kfree(g->ndev.attrs); 665 } 666 667 if (g->type.attrs) { 668 for (i = 0; (a = g->type.attrs[i]); ++i) 669 kfree(a); 670 671 kfree(g->type.attrs); 672 } 673 674 kfree(g); 675} 676 677static struct kobj_type port_type = { 678 .release = ib_port_release, 679 .sysfs_ops = &port_sysfs_ops, 680 .default_attrs = port_default_attrs 681}; 682 683static struct kobj_type gid_attr_type = { 684 .sysfs_ops = &gid_attr_sysfs_ops, 685 .release = ib_port_gid_attr_release 686}; 687 688static struct attribute ** 689alloc_group_attrs(ssize_t (*show)(struct ib_port *, 690 struct port_attribute *, char *buf), 691 int len) 692{ 693 struct attribute **tab_attr; 694 struct port_table_attribute *element; 695 int i; 696 697 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL); 698 if (!tab_attr) 699 return NULL; 700 701 for (i = 0; i < len; i++) { 702 element = kzalloc(sizeof(struct port_table_attribute), 703 GFP_KERNEL); 704 if (!element) 705 goto err; 706 707 if (snprintf(element->name, sizeof(element->name), 708 "%d", i) >= sizeof(element->name)) { 709 kfree(element); 710 goto err; 711 } 712 713 element->attr.attr.name = element->name; 714 element->attr.attr.mode = S_IRUGO; 715 element->attr.show = show; 716 element->index = i; 717 sysfs_attr_init(&element->attr.attr); 718 719 tab_attr[i] = &element->attr.attr; 720 } 721 722 return tab_attr; 723 724err: 725 while (--i >= 0) 726 kfree(tab_attr[i]); 727 kfree(tab_attr); 728 return NULL; 729} 730 731/* 732 * Figure out which counter table to use depending on 733 * the device capabilities. 734 */ 735static struct attribute_group *get_counter_table(struct ib_device *dev, 736 int port_num) 737{ 738 struct ib_class_port_info cpi; 739 740 if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO, 741 &cpi, 40, sizeof(cpi)) >= 0) { 742 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH) 743 /* We have extended counters */ 744 return &pma_group_ext; 745 746 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF) 747 /* But not the IETF ones */ 748 return &pma_group_noietf; 749 } 750 751 /* Fall back to normal counters */ 752 return &pma_group; 753} 754 755static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats, 756 u8 port_num, int index) 757{ 758 int ret; 759 760 if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan)) 761 return 0; 762 ret = dev->get_hw_stats(dev, stats, port_num, index); 763 if (ret < 0) 764 return ret; 765 if (ret == stats->num_counters) 766 stats->timestamp = jiffies; 767 768 return 0; 769} 770 771static ssize_t print_hw_stat(struct rdma_hw_stats *stats, int index, char *buf) 772{ 773 return sprintf(buf, "%llu\n", (unsigned long long)stats->value[index]); 774} 775 776static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr, 777 char *buf) 778{ 779 struct ib_device *dev; 780 struct ib_port *port; 781 struct hw_stats_attribute *hsa; 782 struct rdma_hw_stats *stats; 783 int ret; 784 785 hsa = container_of(attr, struct hw_stats_attribute, attr); 786 if (!hsa->port_num) { 787 dev = container_of((struct device *)kobj, 788 struct ib_device, dev); 789 stats = dev->hw_stats; 790 } else { 791 port = container_of(kobj, struct ib_port, kobj); 792 dev = port->ibdev; 793 stats = port->hw_stats; 794 } 795 ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index); 796 if (ret) 797 return ret; 798 return print_hw_stat(stats, hsa->index, buf); 799} 800 801static ssize_t show_stats_lifespan(struct kobject *kobj, 802 struct attribute *attr, 803 char *buf) 804{ 805 struct hw_stats_attribute *hsa; 806 int msecs; 807 808 hsa = container_of(attr, struct hw_stats_attribute, attr); 809 if (!hsa->port_num) { 810 struct ib_device *dev = container_of((struct device *)kobj, 811 struct ib_device, dev); 812 msecs = jiffies_to_msecs(dev->hw_stats->lifespan); 813 } else { 814 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 815 msecs = jiffies_to_msecs(p->hw_stats->lifespan); 816 } 817 return sprintf(buf, "%d\n", msecs); 818} 819 820static ssize_t set_stats_lifespan(struct kobject *kobj, 821 struct attribute *attr, 822 const char *buf, size_t count) 823{ 824 struct hw_stats_attribute *hsa; 825 int msecs; 826 int jiffies; 827 int ret; 828 829 ret = kstrtoint(buf, 10, &msecs); 830 if (ret) 831 return ret; 832 if (msecs < 0 || msecs > 10000) 833 return -EINVAL; 834 jiffies = msecs_to_jiffies(msecs); 835 hsa = container_of(attr, struct hw_stats_attribute, attr); 836 if (!hsa->port_num) { 837 struct ib_device *dev = container_of((struct device *)kobj, 838 struct ib_device, dev); 839 dev->hw_stats->lifespan = jiffies; 840 } else { 841 struct ib_port *p = container_of(kobj, struct ib_port, kobj); 842 p->hw_stats->lifespan = jiffies; 843 } 844 return count; 845} 846 847static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group) 848{ 849 struct attribute **attr; 850 851 sysfs_remove_group(kobj, attr_group); 852 853 for (attr = attr_group->attrs; *attr; attr++) 854 kfree(*attr); 855 kfree(attr_group); 856} 857 858static struct attribute *alloc_hsa(int index, u8 port_num, const char *name) 859{ 860 struct hw_stats_attribute *hsa; 861 862 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 863 if (!hsa) 864 return NULL; 865 866 hsa->attr.name = __DECONST(char *, name); 867 hsa->attr.mode = S_IRUGO; 868 hsa->show = show_hw_stats; 869 hsa->store = NULL; 870 hsa->index = index; 871 hsa->port_num = port_num; 872 873 return &hsa->attr; 874} 875 876static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num) 877{ 878 struct hw_stats_attribute *hsa; 879 880 hsa = kmalloc(sizeof(*hsa), GFP_KERNEL); 881 if (!hsa) 882 return NULL; 883 884 hsa->attr.name = name; 885 hsa->attr.mode = S_IWUSR | S_IRUGO; 886 hsa->show = show_stats_lifespan; 887 hsa->store = set_stats_lifespan; 888 hsa->index = 0; 889 hsa->port_num = port_num; 890 891 return &hsa->attr; 892} 893 894static void setup_hw_stats(struct ib_device *device, struct ib_port *port, 895 u8 port_num) 896{ 897 struct attribute_group *hsag; 898 struct rdma_hw_stats *stats; 899 int i, ret; 900 901 stats = device->alloc_hw_stats(device, port_num); 902 903 if (!stats) 904 return; 905 906 if (!stats->names || stats->num_counters <= 0) 907 goto err_free_stats; 908 909 /* 910 * Two extra attribue elements here, one for the lifespan entry and 911 * one to NULL terminate the list for the sysfs core code 912 */ 913 hsag = kzalloc(sizeof(*hsag) + 914 sizeof(void *) * (stats->num_counters + 2), 915 GFP_KERNEL); 916 if (!hsag) 917 goto err_free_stats; 918 919 ret = device->get_hw_stats(device, stats, port_num, 920 stats->num_counters); 921 if (ret != stats->num_counters) 922 goto err_free_hsag; 923 924 stats->timestamp = jiffies; 925 926 hsag->name = "hw_counters"; 927 hsag->attrs = (void *)((char *)hsag + sizeof(*hsag)); 928 929 for (i = 0; i < stats->num_counters; i++) { 930 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]); 931 if (!hsag->attrs[i]) 932 goto err; 933 sysfs_attr_init(hsag->attrs[i]); 934 } 935 936 /* treat an error here as non-fatal */ 937 hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num); 938 if (hsag->attrs[i]) 939 sysfs_attr_init(hsag->attrs[i]); 940 941 if (port) { 942 struct kobject *kobj = &port->kobj; 943 ret = sysfs_create_group(kobj, hsag); 944 if (ret) 945 goto err; 946 port->hw_stats_ag = hsag; 947 port->hw_stats = stats; 948 } else { 949 struct kobject *kobj = &device->dev.kobj; 950 ret = sysfs_create_group(kobj, hsag); 951 if (ret) 952 goto err; 953 device->hw_stats_ag = hsag; 954 device->hw_stats = stats; 955 } 956 957 return; 958 959err: 960 for (; i >= 0; i--) 961 kfree(hsag->attrs[i]); 962err_free_hsag: 963 kfree(hsag); 964err_free_stats: 965 kfree(stats); 966 return; 967} 968 969static int add_port(struct ib_device *device, int port_num, 970 int (*port_callback)(struct ib_device *, 971 u8, struct kobject *)) 972{ 973 struct ib_port *p; 974 struct ib_port_attr attr; 975 int i; 976 int ret; 977 978 ret = ib_query_port(device, port_num, &attr); 979 if (ret) 980 return ret; 981 982 p = kzalloc(sizeof *p, GFP_KERNEL); 983 if (!p) 984 return -ENOMEM; 985 986 p->ibdev = device; 987 p->port_num = port_num; 988 989 ret = kobject_init_and_add(&p->kobj, &port_type, 990 device->ports_parent, 991 "%d", port_num); 992 if (ret) { 993 kfree(p); 994 return ret; 995 } 996 997 p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL); 998 if (!p->gid_attr_group) { 999 ret = -ENOMEM; 1000 goto err_put; 1001 } 1002 1003 p->gid_attr_group->port = p; 1004 ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type, 1005 &p->kobj, "gid_attrs"); 1006 if (ret) { 1007 kfree(p->gid_attr_group); 1008 goto err_put; 1009 } 1010 1011 p->pma_table = get_counter_table(device, port_num); 1012 ret = sysfs_create_group(&p->kobj, p->pma_table); 1013 if (ret) 1014 goto err_put_gid_attrs; 1015 1016 p->gid_group.name = "gids"; 1017 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len); 1018 if (!p->gid_group.attrs) { 1019 ret = -ENOMEM; 1020 goto err_remove_pma; 1021 } 1022 1023 ret = sysfs_create_group(&p->kobj, &p->gid_group); 1024 if (ret) 1025 goto err_free_gid; 1026 1027 p->gid_attr_group->ndev.name = "ndevs"; 1028 p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev, 1029 attr.gid_tbl_len); 1030 if (!p->gid_attr_group->ndev.attrs) { 1031 ret = -ENOMEM; 1032 goto err_remove_gid; 1033 } 1034 1035 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1036 &p->gid_attr_group->ndev); 1037 if (ret) 1038 goto err_free_gid_ndev; 1039 1040 p->gid_attr_group->type.name = "types"; 1041 p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type, 1042 attr.gid_tbl_len); 1043 if (!p->gid_attr_group->type.attrs) { 1044 ret = -ENOMEM; 1045 goto err_remove_gid_ndev; 1046 } 1047 1048 ret = sysfs_create_group(&p->gid_attr_group->kobj, 1049 &p->gid_attr_group->type); 1050 if (ret) 1051 goto err_free_gid_type; 1052 1053 p->pkey_group.name = "pkeys"; 1054 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey, 1055 attr.pkey_tbl_len); 1056 if (!p->pkey_group.attrs) { 1057 ret = -ENOMEM; 1058 goto err_remove_gid_type; 1059 } 1060 1061 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 1062 if (ret) 1063 goto err_free_pkey; 1064 1065 if (port_callback) { 1066 ret = port_callback(device, port_num, &p->kobj); 1067 if (ret) 1068 goto err_remove_pkey; 1069 } 1070 1071 /* 1072 * If port == 0, it means we have only one port and the parent 1073 * device, not this port device, should be the holder of the 1074 * hw_counters 1075 */ 1076 if (device->alloc_hw_stats && port_num) 1077 setup_hw_stats(device, p, port_num); 1078 1079 list_add_tail(&p->kobj.entry, &device->port_list); 1080 1081 return 0; 1082 1083err_remove_pkey: 1084 sysfs_remove_group(&p->kobj, &p->pkey_group); 1085 1086err_free_pkey: 1087 for (i = 0; i < attr.pkey_tbl_len; ++i) 1088 kfree(p->pkey_group.attrs[i]); 1089 1090 kfree(p->pkey_group.attrs); 1091 p->pkey_group.attrs = NULL; 1092 1093err_remove_gid_type: 1094 sysfs_remove_group(&p->gid_attr_group->kobj, 1095 &p->gid_attr_group->type); 1096 1097err_free_gid_type: 1098 for (i = 0; i < attr.gid_tbl_len; ++i) 1099 kfree(p->gid_attr_group->type.attrs[i]); 1100 1101 kfree(p->gid_attr_group->type.attrs); 1102 p->gid_attr_group->type.attrs = NULL; 1103 1104err_remove_gid_ndev: 1105 sysfs_remove_group(&p->gid_attr_group->kobj, 1106 &p->gid_attr_group->ndev); 1107 1108err_free_gid_ndev: 1109 for (i = 0; i < attr.gid_tbl_len; ++i) 1110 kfree(p->gid_attr_group->ndev.attrs[i]); 1111 1112 kfree(p->gid_attr_group->ndev.attrs); 1113 p->gid_attr_group->ndev.attrs = NULL; 1114 1115err_remove_gid: 1116 sysfs_remove_group(&p->kobj, &p->gid_group); 1117 1118err_free_gid: 1119 for (i = 0; i < attr.gid_tbl_len; ++i) 1120 kfree(p->gid_group.attrs[i]); 1121 1122 kfree(p->gid_group.attrs); 1123 p->gid_group.attrs = NULL; 1124 1125err_remove_pma: 1126 sysfs_remove_group(&p->kobj, p->pma_table); 1127 1128err_put_gid_attrs: 1129 kobject_put(&p->gid_attr_group->kobj); 1130 1131err_put: 1132 kobject_put(&p->kobj); 1133 return ret; 1134} 1135 1136static ssize_t show_node_type(struct device *device, 1137 struct device_attribute *attr, char *buf) 1138{ 1139 struct ib_device *dev = container_of(device, struct ib_device, dev); 1140 1141 switch (dev->node_type) { 1142 case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type); 1143 case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); 1144 case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); 1145 case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); 1146 case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); 1147 case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); 1148 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); 1149 } 1150} 1151 1152static ssize_t show_sys_image_guid(struct device *device, 1153 struct device_attribute *dev_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->attrs.sys_image_guid)[0]), 1159 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]), 1160 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]), 1161 be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3])); 1162} 1163 1164static ssize_t show_node_guid(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, "%04x:%04x:%04x:%04x\n", 1170 be16_to_cpu(((__be16 *) &dev->node_guid)[0]), 1171 be16_to_cpu(((__be16 *) &dev->node_guid)[1]), 1172 be16_to_cpu(((__be16 *) &dev->node_guid)[2]), 1173 be16_to_cpu(((__be16 *) &dev->node_guid)[3])); 1174} 1175 1176static ssize_t show_node_desc(struct device *device, 1177 struct device_attribute *attr, char *buf) 1178{ 1179 struct ib_device *dev = container_of(device, struct ib_device, dev); 1180 1181 return sprintf(buf, "%.64s\n", dev->node_desc); 1182} 1183 1184static ssize_t set_node_desc(struct device *device, 1185 struct device_attribute *attr, 1186 const char *buf, size_t count) 1187{ 1188 struct ib_device *dev = container_of(device, struct ib_device, dev); 1189 struct ib_device_modify desc = {}; 1190 int ret; 1191 1192 if (!dev->modify_device) 1193 return -EIO; 1194 1195 memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX)); 1196 ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc); 1197 if (ret) 1198 return ret; 1199 1200 return count; 1201} 1202 1203static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 1204 char *buf) 1205{ 1206 struct ib_device *dev = container_of(device, struct ib_device, dev); 1207 1208 ib_get_device_fw_str(dev, buf, PAGE_SIZE); 1209 strlcat(buf, "\n", PAGE_SIZE); 1210 return strlen(buf); 1211} 1212 1213static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL); 1214static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL); 1215static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL); 1216static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc); 1217static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 1218 1219static struct device_attribute *ib_class_attributes[] = { 1220 &dev_attr_node_type, 1221 &dev_attr_sys_image_guid, 1222 &dev_attr_node_guid, 1223 &dev_attr_node_desc, 1224 &dev_attr_fw_ver, 1225}; 1226 1227static void free_port_list_attributes(struct ib_device *device) 1228{ 1229 struct kobject *p, *t; 1230 1231 list_for_each_entry_safe(p, t, &device->port_list, entry) { 1232 struct ib_port *port = container_of(p, struct ib_port, kobj); 1233 list_del(&p->entry); 1234 if (port->hw_stats) { 1235 kfree(port->hw_stats); 1236 free_hsag(&port->kobj, port->hw_stats_ag); 1237 } 1238 sysfs_remove_group(p, port->pma_table); 1239 sysfs_remove_group(p, &port->pkey_group); 1240 sysfs_remove_group(p, &port->gid_group); 1241 sysfs_remove_group(&port->gid_attr_group->kobj, 1242 &port->gid_attr_group->ndev); 1243 sysfs_remove_group(&port->gid_attr_group->kobj, 1244 &port->gid_attr_group->type); 1245 kobject_put(&port->gid_attr_group->kobj); 1246 kobject_put(p); 1247 } 1248 1249 kobject_put(device->ports_parent); 1250} 1251 1252int ib_device_register_sysfs(struct ib_device *device, 1253 int (*port_callback)(struct ib_device *, 1254 u8, struct kobject *)) 1255{ 1256 struct device *class_dev = &device->dev; 1257 int ret; 1258 int i; 1259 1260 device->dev.parent = device->dma_device; 1261 ret = dev_set_name(class_dev, "%s", device->name); 1262 if (ret) 1263 return ret; 1264 1265 ret = device_add(class_dev); 1266 if (ret) 1267 goto err; 1268 1269 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) { 1270 ret = device_create_file(class_dev, ib_class_attributes[i]); 1271 if (ret) 1272 goto err_unregister; 1273 } 1274 1275 device->ports_parent = kobject_create_and_add("ports", 1276 &class_dev->kobj); 1277 if (!device->ports_parent) { 1278 ret = -ENOMEM; 1279 goto err_put; 1280 } 1281 1282 if (rdma_cap_ib_switch(device)) { 1283 ret = add_port(device, 0, port_callback); 1284 if (ret) 1285 goto err_put; 1286 } else { 1287 for (i = 1; i <= device->phys_port_cnt; ++i) { 1288 ret = add_port(device, i, port_callback); 1289 if (ret) 1290 goto err_put; 1291 } 1292 } 1293 1294 if (device->alloc_hw_stats) 1295 setup_hw_stats(device, NULL, 0); 1296 1297 return 0; 1298 1299err_put: 1300 free_port_list_attributes(device); 1301 1302err_unregister: 1303 device_unregister(class_dev); 1304 1305err: 1306 return ret; 1307} 1308 1309void ib_device_unregister_sysfs(struct ib_device *device) 1310{ 1311 int i; 1312 1313 /* Hold kobject until ib_dealloc_device() */ 1314 kobject_get(&device->dev.kobj); 1315 1316 free_port_list_attributes(device); 1317 1318 if (device->hw_stats) { 1319 kfree(device->hw_stats); 1320 free_hsag(&device->dev.kobj, device->hw_stats_ag); 1321 } 1322 1323 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) 1324 device_remove_file(&device->dev, ib_class_attributes[i]); 1325 1326 device_unregister(&device->dev); 1327} 1328