drivers/infiniband/core/sysfs.c

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This source file includes following definitions.
port_attr_show
port_attr_store
gid_attr_show
state_show
lid_show
lid_mask_count_show
sm_lid_show
sm_sl_show
cap_mask_show
rate_show
phys_state_to_str
phys_state_show
link_layer_show
print_ndev
print_gid_type
_show_port_gid_attr
show_port_gid
show_port_gid_attr_ndev
show_port_gid_attr_gid_type
show_port_pkey
get_perf_mad
show_pma_counter
ib_port_release
ib_port_gid_attr_release
alloc_group_attrs
get_counter_table
update_hw_stats
print_hw_stat
show_hw_stats
show_stats_lifespan
set_stats_lifespan
free_hsag
alloc_hsa
alloc_hsa_lifespan
setup_hw_stats
add_port
node_type_show
sys_image_guid_show
node_guid_show
node_desc_show
node_desc_store
fw_ver_show
ib_free_port_attrs
ib_setup_port_attrs
ib_device_register_sysfs
ib_device_unregister_sysfs
ib_port_register_module_stat
ib_port_unregister_module_stat
   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 #include <rdma/ib_cache.h>
  46 #include <rdma/rdma_counter.h>
  47 
  48 struct ib_port;
  49 
  50 struct gid_attr_group {
  51         struct ib_port          *port;
  52         struct kobject          kobj;
  53         struct attribute_group  ndev;
  54         struct attribute_group  type;
  55 };
  56 struct ib_port {
  57         struct kobject         kobj;
  58         struct ib_device      *ibdev;
  59         struct gid_attr_group *gid_attr_group;
  60         struct attribute_group gid_group;
  61         struct attribute_group pkey_group;
  62         struct attribute_group *pma_table;
  63         struct attribute_group *hw_stats_ag;
  64         struct rdma_hw_stats   *hw_stats;
  65         u8                     port_num;
  66 };
  67 
  68 struct port_attribute {
  69         struct attribute attr;
  70         ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
  71         ssize_t (*store)(struct ib_port *, struct port_attribute *,
  72                          const char *buf, size_t count);
  73 };
  74 
  75 #define PORT_ATTR(_name, _mode, _show, _store) \
  76 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
  77 
  78 #define PORT_ATTR_RO(_name) \
  79 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
  80 
  81 struct port_table_attribute {
  82         struct port_attribute   attr;
  83         char                    name[8];
  84         int                     index;
  85         __be16                  attr_id;
  86 };
  87 
  88 struct hw_stats_attribute {
  89         struct attribute        attr;
  90         ssize_t                 (*show)(struct kobject *kobj,
  91                                         struct attribute *attr, char *buf);
  92         ssize_t                 (*store)(struct kobject *kobj,
  93                                          struct attribute *attr,
  94                                          const char *buf,
  95                                          size_t count);
  96         int                     index;
  97         u8                      port_num;
  98 };
  99 
 100 static ssize_t port_attr_show(struct kobject *kobj,
 101                               struct attribute *attr, char *buf)
 102 {
 103         struct port_attribute *port_attr =
 104                 container_of(attr, struct port_attribute, attr);
 105         struct ib_port *p = container_of(kobj, struct ib_port, kobj);
 106 
 107         if (!port_attr->show)
 108                 return -EIO;
 109 
 110         return port_attr->show(p, port_attr, buf);
 111 }
 112 
 113 static ssize_t port_attr_store(struct kobject *kobj,
 114                                struct attribute *attr,
 115                                const char *buf, size_t count)
 116 {
 117         struct port_attribute *port_attr =
 118                 container_of(attr, struct port_attribute, attr);
 119         struct ib_port *p = container_of(kobj, struct ib_port, kobj);
 120 
 121         if (!port_attr->store)
 122                 return -EIO;
 123         return port_attr->store(p, port_attr, buf, count);
 124 }
 125 
 126 static const struct sysfs_ops port_sysfs_ops = {
 127         .show   = port_attr_show,
 128         .store  = port_attr_store
 129 };
 130 
 131 static ssize_t gid_attr_show(struct kobject *kobj,
 132                              struct attribute *attr, char *buf)
 133 {
 134         struct port_attribute *port_attr =
 135                 container_of(attr, struct port_attribute, attr);
 136         struct ib_port *p = container_of(kobj, struct gid_attr_group,
 137                                          kobj)->port;
 138 
 139         if (!port_attr->show)
 140                 return -EIO;
 141 
 142         return port_attr->show(p, port_attr, buf);
 143 }
 144 
 145 static const struct sysfs_ops gid_attr_sysfs_ops = {
 146         .show = gid_attr_show
 147 };
 148 
 149 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
 150                           char *buf)
 151 {
 152         struct ib_port_attr attr;
 153         ssize_t ret;
 154 
 155         static const char *state_name[] = {
 156                 [IB_PORT_NOP]           = "NOP",
 157                 [IB_PORT_DOWN]          = "DOWN",
 158                 [IB_PORT_INIT]          = "INIT",
 159                 [IB_PORT_ARMED]         = "ARMED",
 160                 [IB_PORT_ACTIVE]        = "ACTIVE",
 161                 [IB_PORT_ACTIVE_DEFER]  = "ACTIVE_DEFER"
 162         };
 163 
 164         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 165         if (ret)
 166                 return ret;
 167 
 168         return sprintf(buf, "%d: %s\n", attr.state,
 169                        attr.state >= 0 && attr.state < ARRAY_SIZE(state_name) ?
 170                        state_name[attr.state] : "UNKNOWN");
 171 }
 172 
 173 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
 174                         char *buf)
 175 {
 176         struct ib_port_attr attr;
 177         ssize_t ret;
 178 
 179         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 180         if (ret)
 181                 return ret;
 182 
 183         return sprintf(buf, "0x%x\n", attr.lid);
 184 }
 185 
 186 static ssize_t lid_mask_count_show(struct ib_port *p,
 187                                    struct port_attribute *unused,
 188                                    char *buf)
 189 {
 190         struct ib_port_attr attr;
 191         ssize_t ret;
 192 
 193         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 194         if (ret)
 195                 return ret;
 196 
 197         return sprintf(buf, "%d\n", attr.lmc);
 198 }
 199 
 200 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
 201                            char *buf)
 202 {
 203         struct ib_port_attr attr;
 204         ssize_t ret;
 205 
 206         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 207         if (ret)
 208                 return ret;
 209 
 210         return sprintf(buf, "0x%x\n", attr.sm_lid);
 211 }
 212 
 213 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
 214                           char *buf)
 215 {
 216         struct ib_port_attr attr;
 217         ssize_t ret;
 218 
 219         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 220         if (ret)
 221                 return ret;
 222 
 223         return sprintf(buf, "%d\n", attr.sm_sl);
 224 }
 225 
 226 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
 227                              char *buf)
 228 {
 229         struct ib_port_attr attr;
 230         ssize_t ret;
 231 
 232         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 233         if (ret)
 234                 return ret;
 235 
 236         return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
 237 }
 238 
 239 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
 240                          char *buf)
 241 {
 242         struct ib_port_attr attr;
 243         char *speed = "";
 244         int rate;               /* in deci-Gb/sec */
 245         ssize_t ret;
 246 
 247         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 248         if (ret)
 249                 return ret;
 250 
 251         switch (attr.active_speed) {
 252         case IB_SPEED_DDR:
 253                 speed = " DDR";
 254                 rate = 50;
 255                 break;
 256         case IB_SPEED_QDR:
 257                 speed = " QDR";
 258                 rate = 100;
 259                 break;
 260         case IB_SPEED_FDR10:
 261                 speed = " FDR10";
 262                 rate = 100;
 263                 break;
 264         case IB_SPEED_FDR:
 265                 speed = " FDR";
 266                 rate = 140;
 267                 break;
 268         case IB_SPEED_EDR:
 269                 speed = " EDR";
 270                 rate = 250;
 271                 break;
 272         case IB_SPEED_HDR:
 273                 speed = " HDR";
 274                 rate = 500;
 275                 break;
 276         case IB_SPEED_SDR:
 277         default:                /* default to SDR for invalid rates */
 278                 speed = " SDR";
 279                 rate = 25;
 280                 break;
 281         }
 282 
 283         rate *= ib_width_enum_to_int(attr.active_width);
 284         if (rate < 0)
 285                 return -EINVAL;
 286 
 287         return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
 288                        rate / 10, rate % 10 ? ".5" : "",
 289                        ib_width_enum_to_int(attr.active_width), speed);
 290 }
 291 
 292 static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
 293 {
 294         static const char * phys_state_str[] = {
 295                 "<unknown>",
 296                 "Sleep",
 297                 "Polling",
 298                 "Disabled",
 299                 "PortConfigurationTraining",
 300                 "LinkUp",
 301                 "LinkErrorRecovery",
 302                 "Phy Test",
 303         };
 304 
 305         if (phys_state < ARRAY_SIZE(phys_state_str))
 306                 return phys_state_str[phys_state];
 307         return "<unknown>";
 308 }
 309 
 310 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
 311                                char *buf)
 312 {
 313         struct ib_port_attr attr;
 314 
 315         ssize_t ret;
 316 
 317         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 318         if (ret)
 319                 return ret;
 320 
 321         return sprintf(buf, "%d: %s\n", attr.phys_state,
 322                        phys_state_to_str(attr.phys_state));
 323 }
 324 
 325 static ssize_t link_layer_show(struct ib_port *p, struct port_attribute *unused,
 326                                char *buf)
 327 {
 328         switch (rdma_port_get_link_layer(p->ibdev, p->port_num)) {
 329         case IB_LINK_LAYER_INFINIBAND:
 330                 return sprintf(buf, "%s\n", "InfiniBand");
 331         case IB_LINK_LAYER_ETHERNET:
 332                 return sprintf(buf, "%s\n", "Ethernet");
 333         default:
 334                 return sprintf(buf, "%s\n", "Unknown");
 335         }
 336 }
 337 
 338 static PORT_ATTR_RO(state);
 339 static PORT_ATTR_RO(lid);
 340 static PORT_ATTR_RO(lid_mask_count);
 341 static PORT_ATTR_RO(sm_lid);
 342 static PORT_ATTR_RO(sm_sl);
 343 static PORT_ATTR_RO(cap_mask);
 344 static PORT_ATTR_RO(rate);
 345 static PORT_ATTR_RO(phys_state);
 346 static PORT_ATTR_RO(link_layer);
 347 
 348 static struct attribute *port_default_attrs[] = {
 349         &port_attr_state.attr,
 350         &port_attr_lid.attr,
 351         &port_attr_lid_mask_count.attr,
 352         &port_attr_sm_lid.attr,
 353         &port_attr_sm_sl.attr,
 354         &port_attr_cap_mask.attr,
 355         &port_attr_rate.attr,
 356         &port_attr_phys_state.attr,
 357         &port_attr_link_layer.attr,
 358         NULL
 359 };
 360 
 361 static size_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf)
 362 {
 363         struct net_device *ndev;
 364         size_t ret = -EINVAL;
 365 
 366         rcu_read_lock();
 367         ndev = rcu_dereference(gid_attr->ndev);
 368         if (ndev)
 369                 ret = sprintf(buf, "%s\n", ndev->name);
 370         rcu_read_unlock();
 371         return ret;
 372 }
 373 
 374 static size_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf)
 375 {
 376         return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_attr->gid_type));
 377 }
 378 
 379 static ssize_t _show_port_gid_attr(
 380         struct ib_port *p, struct port_attribute *attr, char *buf,
 381         size_t (*print)(const struct ib_gid_attr *gid_attr, char *buf))
 382 {
 383         struct port_table_attribute *tab_attr =
 384                 container_of(attr, struct port_table_attribute, attr);
 385         const struct ib_gid_attr *gid_attr;
 386         ssize_t ret;
 387 
 388         gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
 389         if (IS_ERR(gid_attr))
 390                 return PTR_ERR(gid_attr);
 391 
 392         ret = print(gid_attr, buf);
 393         rdma_put_gid_attr(gid_attr);
 394         return ret;
 395 }
 396 
 397 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
 398                              char *buf)
 399 {
 400         struct port_table_attribute *tab_attr =
 401                 container_of(attr, struct port_table_attribute, attr);
 402         const struct ib_gid_attr *gid_attr;
 403         ssize_t ret;
 404 
 405         gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index);
 406         if (IS_ERR(gid_attr)) {
 407                 const union ib_gid zgid = {};
 408 
 409                 /* If reading GID fails, it is likely due to GID entry being
 410                  * empty (invalid) or reserved GID in the table.  User space
 411                  * expects to read GID table entries as long as it given index
 412                  * is within GID table size.  Administrative/debugging tool
 413                  * fails to query rest of the GID entries if it hits error
 414                  * while querying a GID of the given index.  To avoid user
 415                  * space throwing such error on fail to read gid, return zero
 416                  * GID as before. This maintains backward compatibility.
 417                  */
 418                 return sprintf(buf, "%pI6\n", zgid.raw);
 419         }
 420 
 421         ret = sprintf(buf, "%pI6\n", gid_attr->gid.raw);
 422         rdma_put_gid_attr(gid_attr);
 423         return ret;
 424 }
 425 
 426 static ssize_t show_port_gid_attr_ndev(struct ib_port *p,
 427                                        struct port_attribute *attr, char *buf)
 428 {
 429         return _show_port_gid_attr(p, attr, buf, print_ndev);
 430 }
 431 
 432 static ssize_t show_port_gid_attr_gid_type(struct ib_port *p,
 433                                            struct port_attribute *attr,
 434                                            char *buf)
 435 {
 436         return _show_port_gid_attr(p, attr, buf, print_gid_type);
 437 }
 438 
 439 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
 440                               char *buf)
 441 {
 442         struct port_table_attribute *tab_attr =
 443                 container_of(attr, struct port_table_attribute, attr);
 444         u16 pkey;
 445         ssize_t ret;
 446 
 447         ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
 448         if (ret)
 449                 return ret;
 450 
 451         return sprintf(buf, "0x%04x\n", pkey);
 452 }
 453 
 454 #define PORT_PMA_ATTR(_name, _counter, _width, _offset)                 \
 455 struct port_table_attribute port_pma_attr_##_name = {                   \
 456         .attr  = __ATTR(_name, S_IRUGO, show_pma_counter, NULL),        \
 457         .index = (_offset) | ((_width) << 16) | ((_counter) << 24),     \
 458         .attr_id = IB_PMA_PORT_COUNTERS ,                               \
 459 }
 460 
 461 #define PORT_PMA_ATTR_EXT(_name, _width, _offset)                       \
 462 struct port_table_attribute port_pma_attr_ext_##_name = {               \
 463         .attr  = __ATTR(_name, S_IRUGO, show_pma_counter, NULL),        \
 464         .index = (_offset) | ((_width) << 16),                          \
 465         .attr_id = IB_PMA_PORT_COUNTERS_EXT ,                           \
 466 }
 467 
 468 /*
 469  * Get a Perfmgmt MAD block of data.
 470  * Returns error code or the number of bytes retrieved.
 471  */
 472 static int get_perf_mad(struct ib_device *dev, int port_num, __be16 attr,
 473                 void *data, int offset, size_t size)
 474 {
 475         struct ib_mad *in_mad;
 476         struct ib_mad *out_mad;
 477         size_t mad_size = sizeof(*out_mad);
 478         u16 out_mad_pkey_index = 0;
 479         ssize_t ret;
 480 
 481         if (!dev->ops.process_mad)
 482                 return -ENOSYS;
 483 
 484         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
 485         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
 486         if (!in_mad || !out_mad) {
 487                 ret = -ENOMEM;
 488                 goto out;
 489         }
 490 
 491         in_mad->mad_hdr.base_version  = 1;
 492         in_mad->mad_hdr.mgmt_class    = IB_MGMT_CLASS_PERF_MGMT;
 493         in_mad->mad_hdr.class_version = 1;
 494         in_mad->mad_hdr.method        = IB_MGMT_METHOD_GET;
 495         in_mad->mad_hdr.attr_id       = attr;
 496 
 497         if (attr != IB_PMA_CLASS_PORT_INFO)
 498                 in_mad->data[41] = port_num;    /* PortSelect field */
 499 
 500         if ((dev->ops.process_mad(dev, IB_MAD_IGNORE_MKEY,
 501                                   port_num, NULL, NULL,
 502                                   (const struct ib_mad_hdr *)in_mad, mad_size,
 503                                   (struct ib_mad_hdr *)out_mad, &mad_size,
 504                                   &out_mad_pkey_index) &
 505              (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
 506             (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
 507                 ret = -EINVAL;
 508                 goto out;
 509         }
 510         memcpy(data, out_mad->data + offset, size);
 511         ret = size;
 512 out:
 513         kfree(in_mad);
 514         kfree(out_mad);
 515         return ret;
 516 }
 517 
 518 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
 519                                 char *buf)
 520 {
 521         struct port_table_attribute *tab_attr =
 522                 container_of(attr, struct port_table_attribute, attr);
 523         int offset = tab_attr->index & 0xffff;
 524         int width  = (tab_attr->index >> 16) & 0xff;
 525         ssize_t ret;
 526         u8 data[8];
 527 
 528         ret = get_perf_mad(p->ibdev, p->port_num, tab_attr->attr_id, &data,
 529                         40 + offset / 8, sizeof(data));
 530         if (ret < 0)
 531                 return ret;
 532 
 533         switch (width) {
 534         case 4:
 535                 ret = sprintf(buf, "%u\n", (*data >>
 536                                             (4 - (offset % 8))) & 0xf);
 537                 break;
 538         case 8:
 539                 ret = sprintf(buf, "%u\n", *data);
 540                 break;
 541         case 16:
 542                 ret = sprintf(buf, "%u\n",
 543                               be16_to_cpup((__be16 *)data));
 544                 break;
 545         case 32:
 546                 ret = sprintf(buf, "%u\n",
 547                               be32_to_cpup((__be32 *)data));
 548                 break;
 549         case 64:
 550                 ret = sprintf(buf, "%llu\n",
 551                                 be64_to_cpup((__be64 *)data));
 552                 break;
 553 
 554         default:
 555                 ret = 0;
 556         }
 557 
 558         return ret;
 559 }
 560 
 561 static PORT_PMA_ATTR(symbol_error                   ,  0, 16,  32);
 562 static PORT_PMA_ATTR(link_error_recovery            ,  1,  8,  48);
 563 static PORT_PMA_ATTR(link_downed                    ,  2,  8,  56);
 564 static PORT_PMA_ATTR(port_rcv_errors                ,  3, 16,  64);
 565 static PORT_PMA_ATTR(port_rcv_remote_physical_errors,  4, 16,  80);
 566 static PORT_PMA_ATTR(port_rcv_switch_relay_errors   ,  5, 16,  96);
 567 static PORT_PMA_ATTR(port_xmit_discards             ,  6, 16, 112);
 568 static PORT_PMA_ATTR(port_xmit_constraint_errors    ,  7,  8, 128);
 569 static PORT_PMA_ATTR(port_rcv_constraint_errors     ,  8,  8, 136);
 570 static PORT_PMA_ATTR(local_link_integrity_errors    ,  9,  4, 152);
 571 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10,  4, 156);
 572 static PORT_PMA_ATTR(VL15_dropped                   , 11, 16, 176);
 573 static PORT_PMA_ATTR(port_xmit_data                 , 12, 32, 192);
 574 static PORT_PMA_ATTR(port_rcv_data                  , 13, 32, 224);
 575 static PORT_PMA_ATTR(port_xmit_packets              , 14, 32, 256);
 576 static PORT_PMA_ATTR(port_rcv_packets               , 15, 32, 288);
 577 static PORT_PMA_ATTR(port_xmit_wait                 ,  0, 32, 320);
 578 
 579 /*
 580  * Counters added by extended set
 581  */
 582 static PORT_PMA_ATTR_EXT(port_xmit_data             , 64,  64);
 583 static PORT_PMA_ATTR_EXT(port_rcv_data              , 64, 128);
 584 static PORT_PMA_ATTR_EXT(port_xmit_packets          , 64, 192);
 585 static PORT_PMA_ATTR_EXT(port_rcv_packets           , 64, 256);
 586 static PORT_PMA_ATTR_EXT(unicast_xmit_packets       , 64, 320);
 587 static PORT_PMA_ATTR_EXT(unicast_rcv_packets        , 64, 384);
 588 static PORT_PMA_ATTR_EXT(multicast_xmit_packets     , 64, 448);
 589 static PORT_PMA_ATTR_EXT(multicast_rcv_packets      , 64, 512);
 590 
 591 static struct attribute *pma_attrs[] = {
 592         &port_pma_attr_symbol_error.attr.attr,
 593         &port_pma_attr_link_error_recovery.attr.attr,
 594         &port_pma_attr_link_downed.attr.attr,
 595         &port_pma_attr_port_rcv_errors.attr.attr,
 596         &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
 597         &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
 598         &port_pma_attr_port_xmit_discards.attr.attr,
 599         &port_pma_attr_port_xmit_constraint_errors.attr.attr,
 600         &port_pma_attr_port_rcv_constraint_errors.attr.attr,
 601         &port_pma_attr_local_link_integrity_errors.attr.attr,
 602         &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
 603         &port_pma_attr_VL15_dropped.attr.attr,
 604         &port_pma_attr_port_xmit_data.attr.attr,
 605         &port_pma_attr_port_rcv_data.attr.attr,
 606         &port_pma_attr_port_xmit_packets.attr.attr,
 607         &port_pma_attr_port_rcv_packets.attr.attr,
 608         &port_pma_attr_port_xmit_wait.attr.attr,
 609         NULL
 610 };
 611 
 612 static struct attribute *pma_attrs_ext[] = {
 613         &port_pma_attr_symbol_error.attr.attr,
 614         &port_pma_attr_link_error_recovery.attr.attr,
 615         &port_pma_attr_link_downed.attr.attr,
 616         &port_pma_attr_port_rcv_errors.attr.attr,
 617         &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
 618         &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
 619         &port_pma_attr_port_xmit_discards.attr.attr,
 620         &port_pma_attr_port_xmit_constraint_errors.attr.attr,
 621         &port_pma_attr_port_rcv_constraint_errors.attr.attr,
 622         &port_pma_attr_local_link_integrity_errors.attr.attr,
 623         &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
 624         &port_pma_attr_VL15_dropped.attr.attr,
 625         &port_pma_attr_ext_port_xmit_data.attr.attr,
 626         &port_pma_attr_ext_port_rcv_data.attr.attr,
 627         &port_pma_attr_ext_port_xmit_packets.attr.attr,
 628         &port_pma_attr_port_xmit_wait.attr.attr,
 629         &port_pma_attr_ext_port_rcv_packets.attr.attr,
 630         &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
 631         &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
 632         &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
 633         &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
 634         NULL
 635 };
 636 
 637 static struct attribute *pma_attrs_noietf[] = {
 638         &port_pma_attr_symbol_error.attr.attr,
 639         &port_pma_attr_link_error_recovery.attr.attr,
 640         &port_pma_attr_link_downed.attr.attr,
 641         &port_pma_attr_port_rcv_errors.attr.attr,
 642         &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
 643         &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
 644         &port_pma_attr_port_xmit_discards.attr.attr,
 645         &port_pma_attr_port_xmit_constraint_errors.attr.attr,
 646         &port_pma_attr_port_rcv_constraint_errors.attr.attr,
 647         &port_pma_attr_local_link_integrity_errors.attr.attr,
 648         &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
 649         &port_pma_attr_VL15_dropped.attr.attr,
 650         &port_pma_attr_ext_port_xmit_data.attr.attr,
 651         &port_pma_attr_ext_port_rcv_data.attr.attr,
 652         &port_pma_attr_ext_port_xmit_packets.attr.attr,
 653         &port_pma_attr_ext_port_rcv_packets.attr.attr,
 654         &port_pma_attr_port_xmit_wait.attr.attr,
 655         NULL
 656 };
 657 
 658 static struct attribute_group pma_group = {
 659         .name  = "counters",
 660         .attrs  = pma_attrs
 661 };
 662 
 663 static struct attribute_group pma_group_ext = {
 664         .name  = "counters",
 665         .attrs  = pma_attrs_ext
 666 };
 667 
 668 static struct attribute_group pma_group_noietf = {
 669         .name  = "counters",
 670         .attrs  = pma_attrs_noietf
 671 };
 672 
 673 static void ib_port_release(struct kobject *kobj)
 674 {
 675         struct ib_port *p = container_of(kobj, struct ib_port, kobj);
 676         struct attribute *a;
 677         int i;
 678 
 679         if (p->gid_group.attrs) {
 680                 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
 681                         kfree(a);
 682 
 683                 kfree(p->gid_group.attrs);
 684         }
 685 
 686         if (p->pkey_group.attrs) {
 687                 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
 688                         kfree(a);
 689 
 690                 kfree(p->pkey_group.attrs);
 691         }
 692 
 693         kfree(p);
 694 }
 695 
 696 static void ib_port_gid_attr_release(struct kobject *kobj)
 697 {
 698         struct gid_attr_group *g = container_of(kobj, struct gid_attr_group,
 699                                                 kobj);
 700         struct attribute *a;
 701         int i;
 702 
 703         if (g->ndev.attrs) {
 704                 for (i = 0; (a = g->ndev.attrs[i]); ++i)
 705                         kfree(a);
 706 
 707                 kfree(g->ndev.attrs);
 708         }
 709 
 710         if (g->type.attrs) {
 711                 for (i = 0; (a = g->type.attrs[i]); ++i)
 712                         kfree(a);
 713 
 714                 kfree(g->type.attrs);
 715         }
 716 
 717         kfree(g);
 718 }
 719 
 720 static struct kobj_type port_type = {
 721         .release       = ib_port_release,
 722         .sysfs_ops     = &port_sysfs_ops,
 723         .default_attrs = port_default_attrs
 724 };
 725 
 726 static struct kobj_type gid_attr_type = {
 727         .sysfs_ops      = &gid_attr_sysfs_ops,
 728         .release        = ib_port_gid_attr_release
 729 };
 730 
 731 static struct attribute **
 732 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
 733                                   struct port_attribute *, char *buf),
 734                   int len)
 735 {
 736         struct attribute **tab_attr;
 737         struct port_table_attribute *element;
 738         int i;
 739 
 740         tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
 741         if (!tab_attr)
 742                 return NULL;
 743 
 744         for (i = 0; i < len; i++) {
 745                 element = kzalloc(sizeof(struct port_table_attribute),
 746                                   GFP_KERNEL);
 747                 if (!element)
 748                         goto err;
 749 
 750                 if (snprintf(element->name, sizeof(element->name),
 751                              "%d", i) >= sizeof(element->name)) {
 752                         kfree(element);
 753                         goto err;
 754                 }
 755 
 756                 element->attr.attr.name  = element->name;
 757                 element->attr.attr.mode  = S_IRUGO;
 758                 element->attr.show       = show;
 759                 element->index           = i;
 760                 sysfs_attr_init(&element->attr.attr);
 761 
 762                 tab_attr[i] = &element->attr.attr;
 763         }
 764 
 765         return tab_attr;
 766 
 767 err:
 768         while (--i >= 0)
 769                 kfree(tab_attr[i]);
 770         kfree(tab_attr);
 771         return NULL;
 772 }
 773 
 774 /*
 775  * Figure out which counter table to use depending on
 776  * the device capabilities.
 777  */
 778 static struct attribute_group *get_counter_table(struct ib_device *dev,
 779                                                  int port_num)
 780 {
 781         struct ib_class_port_info cpi;
 782 
 783         if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
 784                                 &cpi, 40, sizeof(cpi)) >= 0) {
 785                 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH)
 786                         /* We have extended counters */
 787                         return &pma_group_ext;
 788 
 789                 if (cpi.capability_mask & IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
 790                         /* But not the IETF ones */
 791                         return &pma_group_noietf;
 792         }
 793 
 794         /* Fall back to normal counters */
 795         return &pma_group;
 796 }
 797 
 798 static int update_hw_stats(struct ib_device *dev, struct rdma_hw_stats *stats,
 799                            u8 port_num, int index)
 800 {
 801         int ret;
 802 
 803         if (time_is_after_eq_jiffies(stats->timestamp + stats->lifespan))
 804                 return 0;
 805         ret = dev->ops.get_hw_stats(dev, stats, port_num, index);
 806         if (ret < 0)
 807                 return ret;
 808         if (ret == stats->num_counters)
 809                 stats->timestamp = jiffies;
 810 
 811         return 0;
 812 }
 813 
 814 static ssize_t print_hw_stat(struct ib_device *dev, int port_num,
 815                              struct rdma_hw_stats *stats, int index, char *buf)
 816 {
 817         u64 v = rdma_counter_get_hwstat_value(dev, port_num, index);
 818 
 819         return sprintf(buf, "%llu\n", stats->value[index] + v);
 820 }
 821 
 822 static ssize_t show_hw_stats(struct kobject *kobj, struct attribute *attr,
 823                              char *buf)
 824 {
 825         struct ib_device *dev;
 826         struct ib_port *port;
 827         struct hw_stats_attribute *hsa;
 828         struct rdma_hw_stats *stats;
 829         int ret;
 830 
 831         hsa = container_of(attr, struct hw_stats_attribute, attr);
 832         if (!hsa->port_num) {
 833                 dev = container_of((struct device *)kobj,
 834                                    struct ib_device, dev);
 835                 stats = dev->hw_stats;
 836         } else {
 837                 port = container_of(kobj, struct ib_port, kobj);
 838                 dev = port->ibdev;
 839                 stats = port->hw_stats;
 840         }
 841         mutex_lock(&stats->lock);
 842         ret = update_hw_stats(dev, stats, hsa->port_num, hsa->index);
 843         if (ret)
 844                 goto unlock;
 845         ret = print_hw_stat(dev, hsa->port_num, stats, hsa->index, buf);
 846 unlock:
 847         mutex_unlock(&stats->lock);
 848 
 849         return ret;
 850 }
 851 
 852 static ssize_t show_stats_lifespan(struct kobject *kobj,
 853                                    struct attribute *attr,
 854                                    char *buf)
 855 {
 856         struct hw_stats_attribute *hsa;
 857         struct rdma_hw_stats *stats;
 858         int msecs;
 859 
 860         hsa = container_of(attr, struct hw_stats_attribute, attr);
 861         if (!hsa->port_num) {
 862                 struct ib_device *dev = container_of((struct device *)kobj,
 863                                                      struct ib_device, dev);
 864 
 865                 stats = dev->hw_stats;
 866         } else {
 867                 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
 868 
 869                 stats = p->hw_stats;
 870         }
 871 
 872         mutex_lock(&stats->lock);
 873         msecs = jiffies_to_msecs(stats->lifespan);
 874         mutex_unlock(&stats->lock);
 875 
 876         return sprintf(buf, "%d\n", msecs);
 877 }
 878 
 879 static ssize_t set_stats_lifespan(struct kobject *kobj,
 880                                   struct attribute *attr,
 881                                   const char *buf, size_t count)
 882 {
 883         struct hw_stats_attribute *hsa;
 884         struct rdma_hw_stats *stats;
 885         int msecs;
 886         int jiffies;
 887         int ret;
 888 
 889         ret = kstrtoint(buf, 10, &msecs);
 890         if (ret)
 891                 return ret;
 892         if (msecs < 0 || msecs > 10000)
 893                 return -EINVAL;
 894         jiffies = msecs_to_jiffies(msecs);
 895         hsa = container_of(attr, struct hw_stats_attribute, attr);
 896         if (!hsa->port_num) {
 897                 struct ib_device *dev = container_of((struct device *)kobj,
 898                                                      struct ib_device, dev);
 899 
 900                 stats = dev->hw_stats;
 901         } else {
 902                 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
 903 
 904                 stats = p->hw_stats;
 905         }
 906 
 907         mutex_lock(&stats->lock);
 908         stats->lifespan = jiffies;
 909         mutex_unlock(&stats->lock);
 910 
 911         return count;
 912 }
 913 
 914 static void free_hsag(struct kobject *kobj, struct attribute_group *attr_group)
 915 {
 916         struct attribute **attr;
 917 
 918         sysfs_remove_group(kobj, attr_group);
 919 
 920         for (attr = attr_group->attrs; *attr; attr++)
 921                 kfree(*attr);
 922         kfree(attr_group);
 923 }
 924 
 925 static struct attribute *alloc_hsa(int index, u8 port_num, const char *name)
 926 {
 927         struct hw_stats_attribute *hsa;
 928 
 929         hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
 930         if (!hsa)
 931                 return NULL;
 932 
 933         hsa->attr.name = (char *)name;
 934         hsa->attr.mode = S_IRUGO;
 935         hsa->show = show_hw_stats;
 936         hsa->store = NULL;
 937         hsa->index = index;
 938         hsa->port_num = port_num;
 939 
 940         return &hsa->attr;
 941 }
 942 
 943 static struct attribute *alloc_hsa_lifespan(char *name, u8 port_num)
 944 {
 945         struct hw_stats_attribute *hsa;
 946 
 947         hsa = kmalloc(sizeof(*hsa), GFP_KERNEL);
 948         if (!hsa)
 949                 return NULL;
 950 
 951         hsa->attr.name = name;
 952         hsa->attr.mode = S_IWUSR | S_IRUGO;
 953         hsa->show = show_stats_lifespan;
 954         hsa->store = set_stats_lifespan;
 955         hsa->index = 0;
 956         hsa->port_num = port_num;
 957 
 958         return &hsa->attr;
 959 }
 960 
 961 static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
 962                            u8 port_num)
 963 {
 964         struct attribute_group *hsag;
 965         struct rdma_hw_stats *stats;
 966         int i, ret;
 967 
 968         stats = device->ops.alloc_hw_stats(device, port_num);
 969 
 970         if (!stats)
 971                 return;
 972 
 973         if (!stats->names || stats->num_counters <= 0)
 974                 goto err_free_stats;
 975 
 976         /*
 977          * Two extra attribue elements here, one for the lifespan entry and
 978          * one to NULL terminate the list for the sysfs core code
 979          */
 980         hsag = kzalloc(sizeof(*hsag) +
 981                        sizeof(void *) * (stats->num_counters + 2),
 982                        GFP_KERNEL);
 983         if (!hsag)
 984                 goto err_free_stats;
 985 
 986         ret = device->ops.get_hw_stats(device, stats, port_num,
 987                                        stats->num_counters);
 988         if (ret != stats->num_counters)
 989                 goto err_free_hsag;
 990 
 991         stats->timestamp = jiffies;
 992 
 993         hsag->name = "hw_counters";
 994         hsag->attrs = (void *)hsag + sizeof(*hsag);
 995 
 996         for (i = 0; i < stats->num_counters; i++) {
 997                 hsag->attrs[i] = alloc_hsa(i, port_num, stats->names[i]);
 998                 if (!hsag->attrs[i])
 999                         goto err;
1000                 sysfs_attr_init(hsag->attrs[i]);
1001         }
1002 
1003         mutex_init(&stats->lock);
1004         /* treat an error here as non-fatal */
1005         hsag->attrs[i] = alloc_hsa_lifespan("lifespan", port_num);
1006         if (hsag->attrs[i])
1007                 sysfs_attr_init(hsag->attrs[i]);
1008 
1009         if (port) {
1010                 struct kobject *kobj = &port->kobj;
1011                 ret = sysfs_create_group(kobj, hsag);
1012                 if (ret)
1013                         goto err;
1014                 port->hw_stats_ag = hsag;
1015                 port->hw_stats = stats;
1016                 if (device->port_data)
1017                         device->port_data[port_num].hw_stats = stats;
1018         } else {
1019                 struct kobject *kobj = &device->dev.kobj;
1020                 ret = sysfs_create_group(kobj, hsag);
1021                 if (ret)
1022                         goto err;
1023                 device->hw_stats_ag = hsag;
1024                 device->hw_stats = stats;
1025         }
1026 
1027         return;
1028 
1029 err:
1030         for (; i >= 0; i--)
1031                 kfree(hsag->attrs[i]);
1032 err_free_hsag:
1033         kfree(hsag);
1034 err_free_stats:
1035         kfree(stats);
1036         return;
1037 }
1038 
1039 static int add_port(struct ib_core_device *coredev, int port_num)
1040 {
1041         struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1042         bool is_full_dev = &device->coredev == coredev;
1043         struct ib_port *p;
1044         struct ib_port_attr attr;
1045         int i;
1046         int ret;
1047 
1048         ret = ib_query_port(device, port_num, &attr);
1049         if (ret)
1050                 return ret;
1051 
1052         p = kzalloc(sizeof *p, GFP_KERNEL);
1053         if (!p)
1054                 return -ENOMEM;
1055 
1056         p->ibdev      = device;
1057         p->port_num   = port_num;
1058 
1059         ret = kobject_init_and_add(&p->kobj, &port_type,
1060                                    coredev->ports_kobj,
1061                                    "%d", port_num);
1062         if (ret) {
1063                 kfree(p);
1064                 return ret;
1065         }
1066 
1067         p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
1068         if (!p->gid_attr_group) {
1069                 ret = -ENOMEM;
1070                 goto err_put;
1071         }
1072 
1073         p->gid_attr_group->port = p;
1074         ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
1075                                    &p->kobj, "gid_attrs");
1076         if (ret) {
1077                 kfree(p->gid_attr_group);
1078                 goto err_put;
1079         }
1080 
1081         if (device->ops.process_mad && is_full_dev) {
1082                 p->pma_table = get_counter_table(device, port_num);
1083                 ret = sysfs_create_group(&p->kobj, p->pma_table);
1084                 if (ret)
1085                         goto err_put_gid_attrs;
1086         }
1087 
1088         p->gid_group.name  = "gids";
1089         p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
1090         if (!p->gid_group.attrs) {
1091                 ret = -ENOMEM;
1092                 goto err_remove_pma;
1093         }
1094 
1095         ret = sysfs_create_group(&p->kobj, &p->gid_group);
1096         if (ret)
1097                 goto err_free_gid;
1098 
1099         p->gid_attr_group->ndev.name = "ndevs";
1100         p->gid_attr_group->ndev.attrs = alloc_group_attrs(show_port_gid_attr_ndev,
1101                                                           attr.gid_tbl_len);
1102         if (!p->gid_attr_group->ndev.attrs) {
1103                 ret = -ENOMEM;
1104                 goto err_remove_gid;
1105         }
1106 
1107         ret = sysfs_create_group(&p->gid_attr_group->kobj,
1108                                  &p->gid_attr_group->ndev);
1109         if (ret)
1110                 goto err_free_gid_ndev;
1111 
1112         p->gid_attr_group->type.name = "types";
1113         p->gid_attr_group->type.attrs = alloc_group_attrs(show_port_gid_attr_gid_type,
1114                                                           attr.gid_tbl_len);
1115         if (!p->gid_attr_group->type.attrs) {
1116                 ret = -ENOMEM;
1117                 goto err_remove_gid_ndev;
1118         }
1119 
1120         ret = sysfs_create_group(&p->gid_attr_group->kobj,
1121                                  &p->gid_attr_group->type);
1122         if (ret)
1123                 goto err_free_gid_type;
1124 
1125         p->pkey_group.name  = "pkeys";
1126         p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
1127                                                 attr.pkey_tbl_len);
1128         if (!p->pkey_group.attrs) {
1129                 ret = -ENOMEM;
1130                 goto err_remove_gid_type;
1131         }
1132 
1133         ret = sysfs_create_group(&p->kobj, &p->pkey_group);
1134         if (ret)
1135                 goto err_free_pkey;
1136 
1137         if (device->ops.init_port && is_full_dev) {
1138                 ret = device->ops.init_port(device, port_num, &p->kobj);
1139                 if (ret)
1140                         goto err_remove_pkey;
1141         }
1142 
1143         /*
1144          * If port == 0, it means hw_counters are per device and not per
1145          * port, so holder should be device. Therefore skip per port conunter
1146          * initialization.
1147          */
1148         if (device->ops.alloc_hw_stats && port_num && is_full_dev)
1149                 setup_hw_stats(device, p, port_num);
1150 
1151         list_add_tail(&p->kobj.entry, &coredev->port_list);
1152 
1153         kobject_uevent(&p->kobj, KOBJ_ADD);
1154         return 0;
1155 
1156 err_remove_pkey:
1157         sysfs_remove_group(&p->kobj, &p->pkey_group);
1158 
1159 err_free_pkey:
1160         for (i = 0; i < attr.pkey_tbl_len; ++i)
1161                 kfree(p->pkey_group.attrs[i]);
1162 
1163         kfree(p->pkey_group.attrs);
1164         p->pkey_group.attrs = NULL;
1165 
1166 err_remove_gid_type:
1167         sysfs_remove_group(&p->gid_attr_group->kobj,
1168                            &p->gid_attr_group->type);
1169 
1170 err_free_gid_type:
1171         for (i = 0; i < attr.gid_tbl_len; ++i)
1172                 kfree(p->gid_attr_group->type.attrs[i]);
1173 
1174         kfree(p->gid_attr_group->type.attrs);
1175         p->gid_attr_group->type.attrs = NULL;
1176 
1177 err_remove_gid_ndev:
1178         sysfs_remove_group(&p->gid_attr_group->kobj,
1179                            &p->gid_attr_group->ndev);
1180 
1181 err_free_gid_ndev:
1182         for (i = 0; i < attr.gid_tbl_len; ++i)
1183                 kfree(p->gid_attr_group->ndev.attrs[i]);
1184 
1185         kfree(p->gid_attr_group->ndev.attrs);
1186         p->gid_attr_group->ndev.attrs = NULL;
1187 
1188 err_remove_gid:
1189         sysfs_remove_group(&p->kobj, &p->gid_group);
1190 
1191 err_free_gid:
1192         for (i = 0; i < attr.gid_tbl_len; ++i)
1193                 kfree(p->gid_group.attrs[i]);
1194 
1195         kfree(p->gid_group.attrs);
1196         p->gid_group.attrs = NULL;
1197 
1198 err_remove_pma:
1199         if (p->pma_table)
1200                 sysfs_remove_group(&p->kobj, p->pma_table);
1201 
1202 err_put_gid_attrs:
1203         kobject_put(&p->gid_attr_group->kobj);
1204 
1205 err_put:
1206         kobject_put(&p->kobj);
1207         return ret;
1208 }
1209 
1210 static ssize_t node_type_show(struct device *device,
1211                               struct device_attribute *attr, char *buf)
1212 {
1213         struct ib_device *dev = rdma_device_to_ibdev(device);
1214 
1215         switch (dev->node_type) {
1216         case RDMA_NODE_IB_CA:     return sprintf(buf, "%d: CA\n", dev->node_type);
1217         case RDMA_NODE_RNIC:      return sprintf(buf, "%d: RNIC\n", dev->node_type);
1218         case RDMA_NODE_USNIC:     return sprintf(buf, "%d: usNIC\n", dev->node_type);
1219         case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type);
1220         case RDMA_NODE_UNSPECIFIED: return sprintf(buf, "%d: unspecified\n", dev->node_type);
1221         case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
1222         case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
1223         default:                  return sprintf(buf, "%d: <unknown>\n", dev->node_type);
1224         }
1225 }
1226 static DEVICE_ATTR_RO(node_type);
1227 
1228 static ssize_t sys_image_guid_show(struct device *device,
1229                                    struct device_attribute *dev_attr, char *buf)
1230 {
1231         struct ib_device *dev = rdma_device_to_ibdev(device);
1232 
1233         return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1234                        be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
1235                        be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
1236                        be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
1237                        be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
1238 }
1239 static DEVICE_ATTR_RO(sys_image_guid);
1240 
1241 static ssize_t node_guid_show(struct device *device,
1242                               struct device_attribute *attr, char *buf)
1243 {
1244         struct ib_device *dev = rdma_device_to_ibdev(device);
1245 
1246         return sprintf(buf, "%04x:%04x:%04x:%04x\n",
1247                        be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
1248                        be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
1249                        be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
1250                        be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
1251 }
1252 static DEVICE_ATTR_RO(node_guid);
1253 
1254 static ssize_t node_desc_show(struct device *device,
1255                               struct device_attribute *attr, char *buf)
1256 {
1257         struct ib_device *dev = rdma_device_to_ibdev(device);
1258 
1259         return sprintf(buf, "%.64s\n", dev->node_desc);
1260 }
1261 
1262 static ssize_t node_desc_store(struct device *device,
1263                                struct device_attribute *attr,
1264                                const char *buf, size_t count)
1265 {
1266         struct ib_device *dev = rdma_device_to_ibdev(device);
1267         struct ib_device_modify desc = {};
1268         int ret;
1269 
1270         if (!dev->ops.modify_device)
1271                 return -EIO;
1272 
1273         memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
1274         ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);
1275         if (ret)
1276                 return ret;
1277 
1278         return count;
1279 }
1280 static DEVICE_ATTR_RW(node_desc);
1281 
1282 static ssize_t fw_ver_show(struct device *device, struct device_attribute *attr,
1283                            char *buf)
1284 {
1285         struct ib_device *dev = rdma_device_to_ibdev(device);
1286 
1287         ib_get_device_fw_str(dev, buf);
1288         strlcat(buf, "\n", IB_FW_VERSION_NAME_MAX);
1289         return strlen(buf);
1290 }
1291 static DEVICE_ATTR_RO(fw_ver);
1292 
1293 static struct attribute *ib_dev_attrs[] = {
1294         &dev_attr_node_type.attr,
1295         &dev_attr_node_guid.attr,
1296         &dev_attr_sys_image_guid.attr,
1297         &dev_attr_fw_ver.attr,
1298         &dev_attr_node_desc.attr,
1299         NULL,
1300 };
1301 
1302 const struct attribute_group ib_dev_attr_group = {
1303         .attrs = ib_dev_attrs,
1304 };
1305 
1306 void ib_free_port_attrs(struct ib_core_device *coredev)
1307 {
1308         struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1309         bool is_full_dev = &device->coredev == coredev;
1310         struct kobject *p, *t;
1311 
1312         list_for_each_entry_safe(p, t, &coredev->port_list, entry) {
1313                 struct ib_port *port = container_of(p, struct ib_port, kobj);
1314 
1315                 list_del(&p->entry);
1316                 if (port->hw_stats_ag)
1317                         free_hsag(&port->kobj, port->hw_stats_ag);
1318                 kfree(port->hw_stats);
1319                 if (device->port_data && is_full_dev)
1320                         device->port_data[port->port_num].hw_stats = NULL;
1321 
1322                 if (port->pma_table)
1323                         sysfs_remove_group(p, port->pma_table);
1324                 sysfs_remove_group(p, &port->pkey_group);
1325                 sysfs_remove_group(p, &port->gid_group);
1326                 sysfs_remove_group(&port->gid_attr_group->kobj,
1327                                    &port->gid_attr_group->ndev);
1328                 sysfs_remove_group(&port->gid_attr_group->kobj,
1329                                    &port->gid_attr_group->type);
1330                 kobject_put(&port->gid_attr_group->kobj);
1331                 kobject_put(p);
1332         }
1333 
1334         kobject_put(coredev->ports_kobj);
1335 }
1336 
1337 int ib_setup_port_attrs(struct ib_core_device *coredev)
1338 {
1339         struct ib_device *device = rdma_device_to_ibdev(&coredev->dev);
1340         unsigned int port;
1341         int ret;
1342 
1343         coredev->ports_kobj = kobject_create_and_add("ports",
1344                                                      &coredev->dev.kobj);
1345         if (!coredev->ports_kobj)
1346                 return -ENOMEM;
1347 
1348         rdma_for_each_port (device, port) {
1349                 ret = add_port(coredev, port);
1350                 if (ret)
1351                         goto err_put;
1352         }
1353 
1354         return 0;
1355 
1356 err_put:
1357         ib_free_port_attrs(coredev);
1358         return ret;
1359 }
1360 
1361 int ib_device_register_sysfs(struct ib_device *device)
1362 {
1363         int ret;
1364 
1365         ret = ib_setup_port_attrs(&device->coredev);
1366         if (ret)
1367                 return ret;
1368 
1369         if (device->ops.alloc_hw_stats)
1370                 setup_hw_stats(device, NULL, 0);
1371 
1372         return 0;
1373 }
1374 
1375 void ib_device_unregister_sysfs(struct ib_device *device)
1376 {
1377         if (device->hw_stats_ag)
1378                 free_hsag(&device->dev.kobj, device->hw_stats_ag);
1379         kfree(device->hw_stats);
1380 
1381         ib_free_port_attrs(&device->coredev);
1382 }
1383 
1384 /**
1385  * ib_port_register_module_stat - add module counters under relevant port
1386  *  of IB device.
1387  *
1388  * @device: IB device to add counters
1389  * @port_num: valid port number
1390  * @kobj: pointer to the kobject to initialize
1391  * @ktype: pointer to the ktype for this kobject.
1392  * @name: the name of the kobject
1393  */
1394 int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
1395                                  struct kobject *kobj, struct kobj_type *ktype,
1396                                  const char *name)
1397 {
1398         struct kobject *p, *t;
1399         int ret;
1400 
1401         list_for_each_entry_safe(p, t, &device->coredev.port_list, entry) {
1402                 struct ib_port *port = container_of(p, struct ib_port, kobj);
1403 
1404                 if (port->port_num != port_num)
1405                         continue;
1406 
1407                 ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s",
1408                                            name);
1409                 if (ret)
1410                         return ret;
1411         }
1412 
1413         return 0;
1414 }
1415 EXPORT_SYMBOL(ib_port_register_module_stat);
1416 
1417 /**
1418  * ib_port_unregister_module_stat - release module counters
1419  * @kobj: pointer to the kobject to release
1420  */
1421 void ib_port_unregister_module_stat(struct kobject *kobj)
1422 {
1423         kobject_put(kobj);
1424 }
1425 EXPORT_SYMBOL(ib_port_unregister_module_stat);
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/infiniband/core/sysfs.c

DEFINITIONS
