drivers/infiniband/core/sysfs.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Mellanox Technologies Ltd.  All rights reserved.
   4  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  */
  34
  35 #include "core_priv.h"
  36
  37 #include <linux/slab.h>
  38 #include <linux/string.h>
  39
  40 #include <rdma/ib_mad.h>
  41
  42 struct ib_port {
  43         struct kobject         kobj;
  44         struct ib_device      *ibdev;
  45         struct attribute_group gid_group;
  46         struct attribute_group pkey_group;
  47         u8                     port_num;
  48 };
  49
  50 struct port_attribute {
  51         struct attribute attr;
  52         ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
  53         ssize_t (*store)(struct ib_port *, struct port_attribute *,
  54                          const char *buf, size_t count);
  55 };
  56
  57 #define PORT_ATTR(_name, _mode, _show, _store) \
  58 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
  59
  60 #define PORT_ATTR_RO(_name) \
  61 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
  62
  63 struct port_table_attribute {
  64         struct port_attribute   attr;
  65         char                    name[8];
  66         int                     index;
  67 };
  68
  69 static inline int ibdev_is_alive(const struct ib_device *dev)
  70 {
  71         return dev->reg_state == IB_DEV_REGISTERED;
  72 }
  73
  74 static ssize_t port_attr_show(struct kobject *kobj,
  75                               struct attribute *attr, char *buf)
  76 {
  77         struct port_attribute *port_attr =
  78                 container_of(attr, struct port_attribute, attr);
  79         struct ib_port *p = container_of(kobj, struct ib_port, kobj);
  80
  81         if (!port_attr->show)
  82                 return -EIO;
  83         if (!ibdev_is_alive(p->ibdev))
  84                 return -ENODEV;
  85
  86         return port_attr->show(p, port_attr, buf);
  87 }
  88
  89 static struct sysfs_ops port_sysfs_ops = {
  90         .show = port_attr_show
  91 };
  92
  93 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
  94                           char *buf)
  95 {
  96         struct ib_port_attr attr;
  97         ssize_t ret;
  98
  99         static const char *state_name[] = {
 100                 [IB_PORT_NOP]           = "NOP",
 101                 [IB_PORT_DOWN]          = "DOWN",
 102                 [IB_PORT_INIT]          = "INIT",
 103                 [IB_PORT_ARMED]         = "ARMED",
 104                 [IB_PORT_ACTIVE]        = "ACTIVE",
 105                 [IB_PORT_ACTIVE_DEFER]  = "ACTIVE_DEFER"
 106         };
 107
 108         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 109         if (ret)
 110                 return ret;
 111
 112         return sprintf(buf, "%d: %s\n", attr.state,
 113                        attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
 114                        state_name[attr.state] : "UNKNOWN");
 115 }
 116
 117 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
 118                         char *buf)
 119 {
 120         struct ib_port_attr attr;
 121         ssize_t ret;
 122
 123         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 124         if (ret)
 125                 return ret;
 126
 127         return sprintf(buf, "0x%x\n", attr.lid);
 128 }
 129
 130 static ssize_t lid_mask_count_show(struct ib_port *p,
 131                                    struct port_attribute *unused,
 132                                    char *buf)
 133 {
 134         struct ib_port_attr attr;
 135         ssize_t ret;
 136
 137         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 138         if (ret)
 139                 return ret;
 140
 141         return sprintf(buf, "%d\n", attr.lmc);
 142 }
 143
 144 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
 145                            char *buf)
 146 {
 147         struct ib_port_attr attr;
 148         ssize_t ret;
 149
 150         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 151         if (ret)
 152                 return ret;
 153
 154         return sprintf(buf, "0x%x\n", attr.sm_lid);
 155 }
 156
 157 static ssize_t sm_sl_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, "%d\n", attr.sm_sl);
 168 }
 169
 170 static ssize_t cap_mask_show(struct ib_port *p, 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, "0x%08x\n", attr.port_cap_flags);
 181 }
 182
 183 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
 184                          char *buf)
 185 {
 186         struct ib_port_attr attr;
 187         char *speed = "";
 188         int rate;
 189         ssize_t ret;
 190
 191         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 192         if (ret)
 193                 return ret;
 194
 195         switch (attr.active_speed) {
 196         case 2: speed = " DDR"; break;
 197         case 4: speed = " QDR"; break;
 198         }
 199
 200         rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed;
 201         if (rate < 0)
 202                 return -EINVAL;
 203
 204         return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
 205                        rate / 10, rate % 10 ? ".5" : "",
 206                        ib_width_enum_to_int(attr.active_width), speed);
 207 }
 208
 209 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
 210                                char *buf)
 211 {
 212         struct ib_port_attr attr;
 213
 214         ssize_t ret;
 215
 216         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 217         if (ret)
 218                 return ret;
 219
 220         switch (attr.phys_state) {
 221         case 1:  return sprintf(buf, "1: Sleep\n");
 222         case 2:  return sprintf(buf, "2: Polling\n");
 223         case 3:  return sprintf(buf, "3: Disabled\n");
 224         case 4:  return sprintf(buf, "4: PortConfigurationTraining\n");
 225         case 5:  return sprintf(buf, "5: LinkUp\n");
 226         case 6:  return sprintf(buf, "6: LinkErrorRecovery\n");
 227         case 7:  return sprintf(buf, "7: Phy Test\n");
 228         default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
 229         }
 230 }
 231
 232 static PORT_ATTR_RO(state);
 233 static PORT_ATTR_RO(lid);
 234 static PORT_ATTR_RO(lid_mask_count);
 235 static PORT_ATTR_RO(sm_lid);
 236 static PORT_ATTR_RO(sm_sl);
 237 static PORT_ATTR_RO(cap_mask);
 238 static PORT_ATTR_RO(rate);
 239 static PORT_ATTR_RO(phys_state);
 240
 241 static struct attribute *port_default_attrs[] = {
 242         &port_attr_state.attr,
 243         &port_attr_lid.attr,
 244         &port_attr_lid_mask_count.attr,
 245         &port_attr_sm_lid.attr,
 246         &port_attr_sm_sl.attr,
 247         &port_attr_cap_mask.attr,
 248         &port_attr_rate.attr,
 249         &port_attr_phys_state.attr,
 250         NULL
 251 };
 252
 253 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
 254                              char *buf)
 255 {
 256         struct port_table_attribute *tab_attr =
 257                 container_of(attr, struct port_table_attribute, attr);
 258         union ib_gid gid;
 259         ssize_t ret;
 260
 261         ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
 262         if (ret)
 263                 return ret;
 264
 265         return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
 266                        be16_to_cpu(((__be16 *) gid.raw)[0]),
 267                        be16_to_cpu(((__be16 *) gid.raw)[1]),
 268                        be16_to_cpu(((__be16 *) gid.raw)[2]),
 269                        be16_to_cpu(((__be16 *) gid.raw)[3]),
 270                        be16_to_cpu(((__be16 *) gid.raw)[4]),
 271                        be16_to_cpu(((__be16 *) gid.raw)[5]),
 272                        be16_to_cpu(((__be16 *) gid.raw)[6]),
 273                        be16_to_cpu(((__be16 *) gid.raw)[7]));
 274 }
 275
 276 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
 277                               char *buf)
 278 {
 279         struct port_table_attribute *tab_attr =
 280                 container_of(attr, struct port_table_attribute, attr);
 281         u16 pkey;
 282         ssize_t ret;
 283
 284         ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
 285         if (ret)
 286                 return ret;
 287
 288         return sprintf(buf, "0x%04x\n", pkey);
 289 }
 290
 291 #define PORT_PMA_ATTR(_name, _counter, _width, _offset)                 \
 292 struct port_table_attribute port_pma_attr_##_name = {                   \
 293         .attr  = __ATTR(_name, S_IRUGO, show_pma_counter, NULL),        \
 294         .index = (_offset) | ((_width) << 16) | ((_counter) << 24)      \
 295 }
 296
 297 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
 298                                 char *buf)
 299 {
 300         struct port_table_attribute *tab_attr =
 301                 container_of(attr, struct port_table_attribute, attr);
 302         int offset = tab_attr->index & 0xffff;
 303         int width  = (tab_attr->index >> 16) & 0xff;
 304         struct ib_mad *in_mad  = NULL;
 305         struct ib_mad *out_mad = NULL;
 306         ssize_t ret;
 307
 308         if (!p->ibdev->process_mad)
 309                 return sprintf(buf, "N/A (no PMA)\n");
 310
 311         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 312         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 313         if (!in_mad || !out_mad) {
 314                 ret = -ENOMEM;
 315                 goto out;
 316         }
 317
 318         in_mad->mad_hdr.base_version  = 1;
 319         in_mad->mad_hdr.mgmt_class    = IB_MGMT_CLASS_PERF_MGMT;
 320         in_mad->mad_hdr.class_version = 1;
 321         in_mad->mad_hdr.method        = IB_MGMT_METHOD_GET;
 322         in_mad->mad_hdr.attr_id       = cpu_to_be16(0x12); /* PortCounters */
 323
 324         in_mad->data[41] = p->port_num; /* PortSelect field */
 325
 326         if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
 327                  p->port_num, NULL, NULL, in_mad, out_mad) &
 328              (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
 329             (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
 330                 ret = -EINVAL;
 331                 goto out;
 332         }
 333
 334         switch (width) {
 335         case 4:
 336                 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
 337                                             (4 - (offset % 8))) & 0xf);
 338                 break;
 339         case 8:
 340                 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
 341                 break;
 342         case 16:
 343                 ret = sprintf(buf, "%u\n",
 344                               be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
 345                 break;
 346         case 32:
 347                 ret = sprintf(buf, "%u\n",
 348                               be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
 349                 break;
 350         default:
 351                 ret = 0;
 352         }
 353
 354 out:
 355         kfree(in_mad);
 356         kfree(out_mad);
 357
 358         return ret;
 359 }
 360
 361 static PORT_PMA_ATTR(symbol_error                   ,  0, 16,  32);
 362 static PORT_PMA_ATTR(link_error_recovery            ,  1,  8,  48);
 363 static PORT_PMA_ATTR(link_downed                    ,  2,  8,  56);
 364 static PORT_PMA_ATTR(port_rcv_errors                ,  3, 16,  64);
 365 static PORT_PMA_ATTR(port_rcv_remote_physical_errors,  4, 16,  80);
 366 static PORT_PMA_ATTR(port_rcv_switch_relay_errors   ,  5, 16,  96);
 367 static PORT_PMA_ATTR(port_xmit_discards             ,  6, 16, 112);
 368 static PORT_PMA_ATTR(port_xmit_constraint_errors    ,  7,  8, 128);
 369 static PORT_PMA_ATTR(port_rcv_constraint_errors     ,  8,  8, 136);
 370 static PORT_PMA_ATTR(local_link_integrity_errors    ,  9,  4, 152);
 371 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10,  4, 156);
 372 static PORT_PMA_ATTR(VL15_dropped                   , 11, 16, 176);
 373 static PORT_PMA_ATTR(port_xmit_data                 , 12, 32, 192);
 374 static PORT_PMA_ATTR(port_rcv_data                  , 13, 32, 224);
 375 static PORT_PMA_ATTR(port_xmit_packets              , 14, 32, 256);
 376 static PORT_PMA_ATTR(port_rcv_packets               , 15, 32, 288);
 377
 378 static struct attribute *pma_attrs[] = {
 379         &port_pma_attr_symbol_error.attr.attr,
 380         &port_pma_attr_link_error_recovery.attr.attr,
 381         &port_pma_attr_link_downed.attr.attr,
 382         &port_pma_attr_port_rcv_errors.attr.attr,
 383         &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
 384         &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
 385         &port_pma_attr_port_xmit_discards.attr.attr,
 386         &port_pma_attr_port_xmit_constraint_errors.attr.attr,
 387         &port_pma_attr_port_rcv_constraint_errors.attr.attr,
 388         &port_pma_attr_local_link_integrity_errors.attr.attr,
 389         &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
 390         &port_pma_attr_VL15_dropped.attr.attr,
 391         &port_pma_attr_port_xmit_data.attr.attr,
 392         &port_pma_attr_port_rcv_data.attr.attr,
 393         &port_pma_attr_port_xmit_packets.attr.attr,
 394         &port_pma_attr_port_rcv_packets.attr.attr,
 395         NULL
 396 };
 397
 398 static struct attribute_group pma_group = {
 399         .name  = "counters",
 400         .attrs  = pma_attrs
 401 };
 402
 403 static void ib_port_release(struct kobject *kobj)
 404 {
 405         struct ib_port *p = container_of(kobj, struct ib_port, kobj);
 406         struct attribute *a;
 407         int i;
 408
 409         for (i = 0; (a = p->gid_group.attrs[i]); ++i)
 410                 kfree(a);
 411
 412         kfree(p->gid_group.attrs);
 413
 414         for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
 415                 kfree(a);
 416
 417         kfree(p->pkey_group.attrs);
 418
 419         kfree(p);
 420 }
 421
 422 static struct kobj_type port_type = {
 423         .release       = ib_port_release,
 424         .sysfs_ops     = &port_sysfs_ops,
 425         .default_attrs = port_default_attrs
 426 };
 427
 428 static void ib_device_release(struct device *device)
 429 {
 430         struct ib_device *dev = container_of(device, struct ib_device, dev);
 431
 432         kfree(dev);
 433 }
 434
 435 static int ib_device_uevent(struct device *device,
 436                             struct kobj_uevent_env *env)
 437 {
 438         struct ib_device *dev = container_of(device, struct ib_device, dev);
 439
 440         if (add_uevent_var(env, "NAME=%s", dev->name))
 441                 return -ENOMEM;
 442
 443         /*
 444          * It would be nice to pass the node GUID with the event...
 445          */
 446
 447         return 0;
 448 }
 449
 450 static struct attribute **
 451 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
 452                                   struct port_attribute *, char *buf),
 453                   int len)
 454 {
 455         struct attribute **tab_attr;
 456         struct port_table_attribute *element;
 457         int i;
 458
 459         tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
 460         if (!tab_attr)
 461                 return NULL;
 462
 463         for (i = 0; i < len; i++) {
 464                 element = kzalloc(sizeof(struct port_table_attribute),
 465                                   GFP_KERNEL);
 466                 if (!element)
 467                         goto err;
 468
 469                 if (snprintf(element->name, sizeof(element->name),
 470                              "%d", i) >= sizeof(element->name)) {
 471                         kfree(element);
 472                         goto err;
 473                 }
 474
 475                 element->attr.attr.name  = element->name;
 476                 element->attr.attr.mode  = S_IRUGO;
 477                 element->attr.show       = show;
 478                 element->index           = i;
 479
 480                 tab_attr[i] = &element->attr.attr;
 481         }
 482
 483         return tab_attr;
 484
 485 err:
 486         while (--i >= 0)
 487                 kfree(tab_attr[i]);
 488         kfree(tab_attr);
 489         return NULL;
 490 }
 491
 492 static int add_port(struct ib_device *device, int port_num)
 493 {
 494         struct ib_port *p;
 495         struct ib_port_attr attr;
 496         int i;
 497         int ret;
 498
 499         ret = ib_query_port(device, port_num, &attr);
 500         if (ret)
 501                 return ret;
 502
 503         p = kzalloc(sizeof *p, GFP_KERNEL);
 504         if (!p)
 505                 return -ENOMEM;
 506
 507         p->ibdev      = device;
 508         p->port_num   = port_num;
 509
 510         ret = kobject_init_and_add(&p->kobj, &port_type,
 511                                    kobject_get(device->ports_parent),
 512                                    "%d", port_num);
 513         if (ret)
 514                 goto err_put;
 515
 516         ret = sysfs_create_group(&p->kobj, &pma_group);
 517         if (ret)
 518                 goto err_put;
 519
 520         p->gid_group.name  = "gids";
 521         p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
 522         if (!p->gid_group.attrs)
 523                 goto err_remove_pma;
 524
 525         ret = sysfs_create_group(&p->kobj, &p->gid_group);
 526         if (ret)
 527                 goto err_free_gid;
 528
 529         p->pkey_group.name  = "pkeys";
 530         p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
 531                                                 attr.pkey_tbl_len);
 532         if (!p->pkey_group.attrs)
 533                 goto err_remove_gid;
 534
 535         ret = sysfs_create_group(&p->kobj, &p->pkey_group);
 536         if (ret)
 537                 goto err_free_pkey;
 538
 539         list_add_tail(&p->kobj.entry, &device->port_list);
 540
 541         kobject_uevent(&p->kobj, KOBJ_ADD);
 542         return 0;
 543
 544 err_free_pkey:
 545         for (i = 0; i < attr.pkey_tbl_len; ++i)
 546                 kfree(p->pkey_group.attrs[i]);
 547
 548         kfree(p->pkey_group.attrs);
 549
 550 err_remove_gid:
 551         sysfs_remove_group(&p->kobj, &p->gid_group);
 552
 553 err_free_gid:
 554         for (i = 0; i < attr.gid_tbl_len; ++i)
 555                 kfree(p->gid_group.attrs[i]);
 556
 557         kfree(p->gid_group.attrs);
 558
 559 err_remove_pma:
 560         sysfs_remove_group(&p->kobj, &pma_group);
 561
 562 err_put:
 563         kobject_put(device->ports_parent);
 564         kfree(p);
 565         return ret;
 566 }
 567
 568 static ssize_t show_node_type(struct device *device,
 569                               struct device_attribute *attr, char *buf)
 570 {
 571         struct ib_device *dev = container_of(device, struct ib_device, dev);
 572
 573         if (!ibdev_is_alive(dev))
 574                 return -ENODEV;
 575
 576         switch (dev->node_type) {
 577         case RDMA_NODE_IB_CA:     return sprintf(buf, "%d: CA\n", dev->node_type);
 578         case RDMA_NODE_RNIC:      return sprintf(buf, "%d: RNIC\n", dev->node_type);
 579         case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
 580         case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
 581         default:                  return sprintf(buf, "%d: <unknown>\n", dev->node_type);
 582         }
 583 }
 584
 585 static ssize_t show_sys_image_guid(struct device *device,
 586                                    struct device_attribute *dev_attr, char *buf)
 587 {
 588         struct ib_device *dev = container_of(device, struct ib_device, dev);
 589         struct ib_device_attr attr;
 590         ssize_t ret;
 591
 592         if (!ibdev_is_alive(dev))
 593                 return -ENODEV;
 594
 595         ret = ib_query_device(dev, &attr);
 596         if (ret)
 597                 return ret;
 598
 599         return sprintf(buf, "%04x:%04x:%04x:%04x\n",
 600                        be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
 601                        be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
 602                        be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
 603                        be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
 604 }
 605
 606 static ssize_t show_node_guid(struct device *device,
 607                               struct device_attribute *attr, char *buf)
 608 {
 609         struct ib_device *dev = container_of(device, struct ib_device, dev);
 610
 611         if (!ibdev_is_alive(dev))
 612                 return -ENODEV;
 613
 614         return sprintf(buf, "%04x:%04x:%04x:%04x\n",
 615                        be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
 616                        be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
 617                        be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
 618                        be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
 619 }
 620
 621 static ssize_t show_node_desc(struct device *device,
 622                               struct device_attribute *attr, char *buf)
 623 {
 624         struct ib_device *dev = container_of(device, struct ib_device, dev);
 625
 626         return sprintf(buf, "%.64s\n", dev->node_desc);
 627 }
 628
 629 static ssize_t set_node_desc(struct device *device,
 630                              struct device_attribute *attr,
 631                              const char *buf, size_t count)
 632 {
 633         struct ib_device *dev = container_of(device, struct ib_device, dev);
 634         struct ib_device_modify desc = {};
 635         int ret;
 636
 637         if (!dev->modify_device)
 638                 return -EIO;
 639
 640         memcpy(desc.node_desc, buf, min_t(int, count, 64));
 641         ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
 642         if (ret)
 643                 return ret;
 644
 645         return count;
 646 }
 647
 648 static DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
 649 static DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
 650 static DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
 651 static DEVICE_ATTR(node_desc, S_IRUGO | S_IWUSR, show_node_desc, set_node_desc);
 652
 653 static struct device_attribute *ib_class_attributes[] = {
 654         &dev_attr_node_type,
 655         &dev_attr_sys_image_guid,
 656         &dev_attr_node_guid,
 657         &dev_attr_node_desc
 658 };
 659
 660 static struct class ib_class = {
 661         .name    = "infiniband",
 662         .dev_release = ib_device_release,
 663         .dev_uevent = ib_device_uevent,
 664 };
 665
 666 /* Show a given an attribute in the statistics group */
 667 static ssize_t show_protocol_stat(const struct device *device,
 668                             struct device_attribute *attr, char *buf,
 669                             unsigned offset)
 670 {
 671         struct ib_device *dev = container_of(device, struct ib_device, dev);
 672         union rdma_protocol_stats stats;
 673         ssize_t ret;
 674
 675         ret = dev->get_protocol_stats(dev, &stats);
 676         if (ret)
 677                 return ret;
 678
 679         return sprintf(buf, "%llu\n",
 680                        (unsigned long long) ((u64 *) &stats)[offset]);
 681 }
 682
 683 /* generate a read-only iwarp statistics attribute */
 684 #define IW_STATS_ENTRY(name)                                            \
 685 static ssize_t show_##name(struct device *device,                       \
 686                            struct device_attribute *attr, char *buf)    \
 687 {                                                                       \
 688         return show_protocol_stat(device, attr, buf,                    \
 689                                   offsetof(struct iw_protocol_stats, name) / \
 690                                   sizeof (u64));                        \
 691 }                                                                       \
 692 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
 693
 694 IW_STATS_ENTRY(ipInReceives);
 695 IW_STATS_ENTRY(ipInHdrErrors);
 696 IW_STATS_ENTRY(ipInTooBigErrors);
 697 IW_STATS_ENTRY(ipInNoRoutes);
 698 IW_STATS_ENTRY(ipInAddrErrors);
 699 IW_STATS_ENTRY(ipInUnknownProtos);
 700 IW_STATS_ENTRY(ipInTruncatedPkts);
 701 IW_STATS_ENTRY(ipInDiscards);
 702 IW_STATS_ENTRY(ipInDelivers);
 703 IW_STATS_ENTRY(ipOutForwDatagrams);
 704 IW_STATS_ENTRY(ipOutRequests);
 705 IW_STATS_ENTRY(ipOutDiscards);
 706 IW_STATS_ENTRY(ipOutNoRoutes);
 707 IW_STATS_ENTRY(ipReasmTimeout);
 708 IW_STATS_ENTRY(ipReasmReqds);
 709 IW_STATS_ENTRY(ipReasmOKs);
 710 IW_STATS_ENTRY(ipReasmFails);
 711 IW_STATS_ENTRY(ipFragOKs);
 712 IW_STATS_ENTRY(ipFragFails);
 713 IW_STATS_ENTRY(ipFragCreates);
 714 IW_STATS_ENTRY(ipInMcastPkts);
 715 IW_STATS_ENTRY(ipOutMcastPkts);
 716 IW_STATS_ENTRY(ipInBcastPkts);
 717 IW_STATS_ENTRY(ipOutBcastPkts);
 718 IW_STATS_ENTRY(tcpRtoAlgorithm);
 719 IW_STATS_ENTRY(tcpRtoMin);
 720 IW_STATS_ENTRY(tcpRtoMax);
 721 IW_STATS_ENTRY(tcpMaxConn);
 722 IW_STATS_ENTRY(tcpActiveOpens);
 723 IW_STATS_ENTRY(tcpPassiveOpens);
 724 IW_STATS_ENTRY(tcpAttemptFails);
 725 IW_STATS_ENTRY(tcpEstabResets);
 726 IW_STATS_ENTRY(tcpCurrEstab);
 727 IW_STATS_ENTRY(tcpInSegs);
 728 IW_STATS_ENTRY(tcpOutSegs);
 729 IW_STATS_ENTRY(tcpRetransSegs);
 730 IW_STATS_ENTRY(tcpInErrs);
 731 IW_STATS_ENTRY(tcpOutRsts);
 732
 733 static struct attribute *iw_proto_stats_attrs[] = {
 734         &dev_attr_ipInReceives.attr,
 735         &dev_attr_ipInHdrErrors.attr,
 736         &dev_attr_ipInTooBigErrors.attr,
 737         &dev_attr_ipInNoRoutes.attr,
 738         &dev_attr_ipInAddrErrors.attr,
 739         &dev_attr_ipInUnknownProtos.attr,
 740         &dev_attr_ipInTruncatedPkts.attr,
 741         &dev_attr_ipInDiscards.attr,
 742         &dev_attr_ipInDelivers.attr,
 743         &dev_attr_ipOutForwDatagrams.attr,
 744         &dev_attr_ipOutRequests.attr,
 745         &dev_attr_ipOutDiscards.attr,
 746         &dev_attr_ipOutNoRoutes.attr,
 747         &dev_attr_ipReasmTimeout.attr,
 748         &dev_attr_ipReasmReqds.attr,
 749         &dev_attr_ipReasmOKs.attr,
 750         &dev_attr_ipReasmFails.attr,
 751         &dev_attr_ipFragOKs.attr,
 752         &dev_attr_ipFragFails.attr,
 753         &dev_attr_ipFragCreates.attr,
 754         &dev_attr_ipInMcastPkts.attr,
 755         &dev_attr_ipOutMcastPkts.attr,
 756         &dev_attr_ipInBcastPkts.attr,
 757         &dev_attr_ipOutBcastPkts.attr,
 758         &dev_attr_tcpRtoAlgorithm.attr,
 759         &dev_attr_tcpRtoMin.attr,
 760         &dev_attr_tcpRtoMax.attr,
 761         &dev_attr_tcpMaxConn.attr,
 762         &dev_attr_tcpActiveOpens.attr,
 763         &dev_attr_tcpPassiveOpens.attr,
 764         &dev_attr_tcpAttemptFails.attr,
 765         &dev_attr_tcpEstabResets.attr,
 766         &dev_attr_tcpCurrEstab.attr,
 767         &dev_attr_tcpInSegs.attr,
 768         &dev_attr_tcpOutSegs.attr,
 769         &dev_attr_tcpRetransSegs.attr,
 770         &dev_attr_tcpInErrs.attr,
 771         &dev_attr_tcpOutRsts.attr,
 772         NULL
 773 };
 774
 775 static struct attribute_group iw_stats_group = {
 776         .name   = "proto_stats",
 777         .attrs  = iw_proto_stats_attrs,
 778 };
 779
 780 int ib_device_register_sysfs(struct ib_device *device)
 781 {
 782         struct device *class_dev = &device->dev;
 783         int ret;
 784         int i;
 785
 786         class_dev->class      = &ib_class;
 787         class_dev->driver_data = device;
 788         class_dev->parent     = device->dma_device;
 789         strlcpy(class_dev->bus_id, device->name, BUS_ID_SIZE);
 790
 791         INIT_LIST_HEAD(&device->port_list);
 792
 793         ret = device_register(class_dev);
 794         if (ret)
 795                 goto err;
 796
 797         for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
 798                 ret = device_create_file(class_dev, ib_class_attributes[i]);
 799                 if (ret)
 800                         goto err_unregister;
 801         }
 802
 803         device->ports_parent = kobject_create_and_add("ports",
 804                                         kobject_get(&class_dev->kobj));
 805         if (!device->ports_parent) {
 806                 ret = -ENOMEM;
 807                 goto err_put;
 808         }
 809
 810         if (device->node_type == RDMA_NODE_IB_SWITCH) {
 811                 ret = add_port(device, 0);
 812                 if (ret)
 813                         goto err_put;
 814         } else {
 815                 for (i = 1; i <= device->phys_port_cnt; ++i) {
 816                         ret = add_port(device, i);
 817                         if (ret)
 818                                 goto err_put;
 819                 }
 820         }
 821
 822         if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats) {
 823                 ret = sysfs_create_group(&class_dev->kobj, &iw_stats_group);
 824                 if (ret)
 825                         goto err_put;
 826         }
 827
 828         return 0;
 829
 830 err_put:
 831         {
 832                 struct kobject *p, *t;
 833                 struct ib_port *port;
 834
 835                 list_for_each_entry_safe(p, t, &device->port_list, entry) {
 836                         list_del(&p->entry);
 837                         port = container_of(p, struct ib_port, kobj);
 838                         sysfs_remove_group(p, &pma_group);
 839                         sysfs_remove_group(p, &port->pkey_group);
 840                         sysfs_remove_group(p, &port->gid_group);
 841                         kobject_put(p);
 842                 }
 843         }
 844
 845         kobject_put(&class_dev->kobj);
 846
 847 err_unregister:
 848         device_unregister(class_dev);
 849
 850 err:
 851         return ret;
 852 }
 853
 854 void ib_device_unregister_sysfs(struct ib_device *device)
 855 {
 856         struct kobject *p, *t;
 857         struct ib_port *port;
 858
 859         list_for_each_entry_safe(p, t, &device->port_list, entry) {
 860                 list_del(&p->entry);
 861                 port = container_of(p, struct ib_port, kobj);
 862                 sysfs_remove_group(p, &pma_group);
 863                 sysfs_remove_group(p, &port->pkey_group);
 864                 sysfs_remove_group(p, &port->gid_group);
 865                 kobject_put(p);
 866         }
 867
 868         kobject_put(device->ports_parent);
 869         device_unregister(&device->dev);
 870 }
 871
 872 int ib_sysfs_setup(void)
 873 {
 874         return class_register(&ib_class);
 875 }
 876
 877 void ib_sysfs_cleanup(void)
 878 {
 879         class_unregister(&ib_class);
 880 }