lnet/lnet/router_proc.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
   5  *
   6  *   This file is part of Portals
   7  *   http://sourceforge.net/projects/sandiaportals/
   8  *
   9  *   Portals is free software; you can redistribute it and/or
  10  *   modify it under the terms of version 2 of the GNU General Public
  11  *   License as published by the Free Software Foundation.
  12  *
  13  *   Portals is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with Portals; if not, write to the Free Software
  20  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  */
  23
  24 #define DEBUG_SUBSYSTEM S_LNET
  25 #include <libcfs/libcfs.h>
  26 #include <lnet/lib-lnet.h>
  27
  28 #if defined(__KERNEL__) && defined(LNET_ROUTER)
  29
  30 /* this is really lnet_proc.c */
  31
  32 static cfs_sysctl_table_header_t *lnet_table_header = NULL;
  33
  34 #ifndef HAVE_SYSCTL_UNNUMBERED
  35 #define CTL_LNET         (0x100)
  36 enum {
  37         PSDEV_LNET_STATS = 100,
  38         PSDEV_LNET_ROUTES,
  39         PSDEV_LNET_ROUTERS,
  40         PSDEV_LNET_PEERS,
  41         PSDEV_LNET_BUFFERS,
  42         PSDEV_LNET_NIS,
  43 };
  44 #else
  45 #define CTL_LNET           CTL_UNNUMBERED
  46 #define PSDEV_LNET_STATS   CTL_UNNUMBERED
  47 #define PSDEV_LNET_ROUTES  CTL_UNNUMBERED
  48 #define PSDEV_LNET_ROUTERS CTL_UNNUMBERED
  49 #define PSDEV_LNET_PEERS   CTL_UNNUMBERED
  50 #define PSDEV_LNET_BUFFERS CTL_UNNUMBERED
  51 #define PSDEV_LNET_NIS     CTL_UNNUMBERED
  52 #endif
  53
  54 static int __proc_lnet_stats(void *data, int write,
  55                              loff_t pos, void *buffer, int nob)
  56 {
  57         int              rc;
  58         lnet_counters_t *ctrs;
  59         int              len;
  60         char            *tmpstr;
  61         const int        tmpsiz = 256; /* 7 %u and 4 LPU64 */
  62
  63         if (write) {
  64                 LNET_LOCK();
  65                 memset(&the_lnet.ln_counters, 0, sizeof(the_lnet.ln_counters));
  66                 LNET_UNLOCK();
  67                 return 0;
  68         }
  69
  70         /* read */
  71
  72         LIBCFS_ALLOC(ctrs, sizeof(*ctrs));
  73         if (ctrs == NULL)
  74                 return -ENOMEM;
  75
  76         LIBCFS_ALLOC(tmpstr, tmpsiz);
  77         if (tmpstr == NULL) {
  78                 LIBCFS_FREE(ctrs, sizeof(*ctrs));
  79                 return -ENOMEM;
  80         }
  81
  82         LNET_LOCK();
  83         *ctrs = the_lnet.ln_counters;
  84         LNET_UNLOCK();
  85
  86         len = snprintf(tmpstr, tmpsiz,
  87                        "%u %u %u %u %u %u %u "LPU64" "LPU64" "
  88                        LPU64" "LPU64,
  89                        ctrs->msgs_alloc, ctrs->msgs_max,
  90                        ctrs->errors,
  91                        ctrs->send_count, ctrs->recv_count,
  92                        ctrs->route_count, ctrs->drop_count,
  93                        ctrs->send_length, ctrs->recv_length,
  94                        ctrs->route_length, ctrs->drop_length);
  95
  96         if (pos >= min_t(int, len, strlen(tmpstr)))
  97                 rc = 0;
  98         else
  99                 rc = trace_copyout_string(buffer, nob,
 100                                           tmpstr + pos, "\n");
 101
 102         LIBCFS_FREE(tmpstr, tmpsiz);
 103         LIBCFS_FREE(ctrs, sizeof(*ctrs));
 104         return rc;
 105 }
 106
 107 DECLARE_PROC_HANDLER(proc_lnet_stats);
 108
 109 int LL_PROC_PROTO(proc_lnet_routes)
 110 {
 111         int        rc     = 0;
 112         char      *tmpstr;
 113         char      *s;
 114         const int  tmpsiz = 256;
 115         int        len;
 116         int       *ver_p  = (unsigned int *)(&filp->private_data);
 117
 118         DECLARE_LL_PROC_PPOS_DECL;
 119
 120         LASSERT (!write);
 121
 122         if (*lenp == 0)
 123                 return 0;
 124
 125         LIBCFS_ALLOC(tmpstr, tmpsiz);
 126         if (tmpstr == NULL)
 127                 return -ENOMEM;
 128
 129         s = tmpstr; /* points to current position in tmpstr[] */
 130
 131         if (*ppos == 0) {
 132                 s += snprintf(s, tmpstr + tmpsiz - s, "Routing %s\n",
 133                               the_lnet.ln_routing ? "enabled" : "disabled");
 134                 LASSERT (tmpstr + tmpsiz - s > 0);
 135
 136                 s += snprintf(s, tmpstr + tmpsiz - s, "%-8s %4s %7s %s\n",
 137                               "net", "hops", "state", "router");
 138                 LASSERT (tmpstr + tmpsiz - s > 0);
 139
 140                 LNET_LOCK();
 141                 *ver_p = (unsigned int)the_lnet.ln_remote_nets_version;
 142                 LNET_UNLOCK();
 143         } else {
 144                 struct list_head  *n;
 145                 struct list_head  *r;
 146                 lnet_route_t      *route = NULL;
 147                 lnet_remotenet_t  *rnet  = NULL;
 148                 int                skip  = *ppos - 1;
 149
 150                 LNET_LOCK();
 151
 152                 if (*ver_p != (unsigned int)the_lnet.ln_remote_nets_version) {
 153                         LNET_UNLOCK();
 154                         LIBCFS_FREE(tmpstr, tmpsiz);
 155                         return -ESTALE;
 156                 }
 157
 158                 n = the_lnet.ln_remote_nets.next;
 159
 160                 while (n != &the_lnet.ln_remote_nets && route == NULL) {
 161                         rnet = list_entry(n, lnet_remotenet_t, lrn_list);
 162
 163                         r = rnet->lrn_routes.next;
 164
 165                         while (r != &rnet->lrn_routes) {
 166                                 lnet_route_t *re = list_entry(r, lnet_route_t,
 167                                                               lr_list);
 168                                 if (skip == 0) {
 169                                         route = re;
 170                                         break;
 171                                 } else
 172                                         skip--;
 173
 174                                 r = r->next;
 175                         }
 176
 177                         n = n->next;
 178                 }
 179
 180                 if (route != NULL) {
 181                         __u32        net   = rnet->lrn_net;
 182                         unsigned int hops  = rnet->lrn_hops;
 183                         lnet_nid_t   nid   = route->lr_gateway->lp_nid;
 184                         int          alive = route->lr_gateway->lp_alive;
 185
 186                         s += snprintf(s, tmpstr + tmpsiz - s, "%-8s %4u %7s %s\n",
 187                                       libcfs_net2str(net), hops,
 188                                       alive ? "up" : "down", libcfs_nid2str(nid));
 189                         LASSERT (tmpstr + tmpsiz - s > 0);
 190                 }
 191
 192                 LNET_UNLOCK();
 193         }
 194
 195         len = s - tmpstr;     /* how many bytes was written */
 196
 197         if (len > *lenp) {    /* linux-supplied buffer is too small */
 198                 rc = -EINVAL;
 199         } else if (len > 0) { /* wrote something */
 200                 if (copy_to_user(buffer, tmpstr, len))
 201                         rc = -EFAULT;
 202                 else
 203                         *ppos += 1;
 204         }
 205
 206         LIBCFS_FREE(tmpstr, tmpsiz);
 207
 208         if (rc == 0)
 209                 *lenp = len;
 210
 211         return rc;
 212 }
 213
 214 int LL_PROC_PROTO(proc_lnet_routers)
 215 {
 216         int        rc = 0;
 217         char      *tmpstr;
 218         char      *s;
 219         const int  tmpsiz = 256;
 220         int        len;
 221         int       *ver_p = (unsigned int *)(&filp->private_data);
 222
 223         DECLARE_LL_PROC_PPOS_DECL;
 224
 225         LASSERT (!write);
 226
 227         if (*lenp == 0)
 228                 return 0;
 229
 230         LIBCFS_ALLOC(tmpstr, tmpsiz);
 231         if (tmpstr == NULL)
 232                 return -ENOMEM;
 233
 234         s = tmpstr; /* points to current position in tmpstr[] */
 235
 236         if (*ppos == 0) {
 237                 s += snprintf(s, tmpstr + tmpsiz - s,
 238                               "%-4s %7s %9s %6s %12s %s\n",
 239                               "ref", "rtr_ref", "alive_cnt", "state",
 240                               "last_ping", "router");
 241                 LASSERT (tmpstr + tmpsiz - s > 0);
 242
 243                 LNET_LOCK();
 244                 *ver_p = (unsigned int)the_lnet.ln_routers_version;
 245                 LNET_UNLOCK();
 246         } else {
 247                 struct list_head  *r;
 248                 lnet_peer_t       *peer = NULL;
 249                 int                skip = *ppos - 1;
 250
 251                 LNET_LOCK();
 252
 253                 if (*ver_p != (unsigned int)the_lnet.ln_routers_version) {
 254                         LNET_UNLOCK();
 255                         LIBCFS_FREE(tmpstr, tmpsiz);
 256                         return -ESTALE;
 257                 }
 258
 259                 r = the_lnet.ln_routers.next;
 260
 261                 while (r != &the_lnet.ln_routers) {
 262                         lnet_peer_t *lp = list_entry(r, lnet_peer_t,
 263                                                      lp_rtr_list);
 264
 265                         if (skip == 0) {
 266                                 peer = lp;
 267                                         break;
 268                                 } else
 269                                         skip--;
 270
 271                         r = r->next;
 272                 }
 273
 274                 if (peer != NULL) {
 275                         int        nrefs     = peer->lp_refcount;
 276                         int        nrtrrefs  = peer->lp_rtr_refcount;
 277                         int        alive_cnt = peer->lp_alive_count;
 278                         int        alive     = peer->lp_alive;
 279                         time_t     last_ping = peer->lp_ping_timestamp;
 280                         lnet_nid_t nid       = peer->lp_nid;
 281
 282                         s += snprintf(s, tmpstr + tmpsiz - s,
 283                                       "%-4d %7d %9d %6s %12lu %s\n",
 284                                       nrefs, nrtrrefs,
 285                                       alive_cnt, alive ? "up" : "down",
 286                                       last_ping, libcfs_nid2str(nid));
 287                         LASSERT (tmpstr + tmpsiz - s > 0);
 288                 }
 289
 290                 LNET_UNLOCK();
 291         }
 292
 293         len = s - tmpstr;     /* how many bytes was written */
 294
 295         if (len > *lenp) {    /* linux-supplied buffer is too small */
 296                 rc = -EINVAL;
 297         } else if (len > 0) { /* wrote something */
 298                 if (copy_to_user(buffer, tmpstr, len))
 299                         rc = -EFAULT;
 300                 else
 301                         *ppos += 1;
 302         }
 303
 304         LIBCFS_FREE(tmpstr, tmpsiz);
 305
 306         if (rc == 0)
 307                 *lenp = len;
 308
 309         return rc;
 310 }
 311
 312 /*
 313  * NB: we don't use the highest bit of *ppos because it's signed;
 314  *     next 9 bits is used to stash idx (assuming that
 315  *     LNET_PEER_HASHSIZE < 512)
 316  */
 317 #define LNET_LOFFT_BITS (sizeof(loff_t) * 8)
 318 #define LNET_PHASH_BITS 9
 319 #define LNET_PHASH_IDX_MASK (((1ULL << LNET_PHASH_BITS) - 1) <<               \
 320                              (LNET_LOFFT_BITS - LNET_PHASH_BITS - 1))
 321 #define LNET_PHASH_NUM_MASK ((1ULL <<                                         \
 322                               (LNET_LOFFT_BITS - LNET_PHASH_BITS -1)) - 1)
 323 #define LNET_PHASH_IDX_GET(pos) (int)(((pos) & LNET_PHASH_IDX_MASK) >>  \
 324                                       (LNET_LOFFT_BITS - LNET_PHASH_BITS -1))
 325 #define LNET_PHASH_NUM_GET(pos) (int)((pos) & LNET_PHASH_NUM_MASK)
 326 #define LNET_PHASH_POS_MAKE(idx, num) ((((loff_t)idx) << (LNET_LOFFT_BITS -   \
 327                                                   LNET_PHASH_BITS -1)) | (num))
 328
 329 int LL_PROC_PROTO(proc_lnet_peers)
 330 {
 331         int        rc = 0;
 332         char      *tmpstr;
 333         char      *s;
 334         const int  tmpsiz      = 256;
 335         int        len;
 336         int       *ver_p       = (unsigned int *)(&filp->private_data);
 337         int        idx;
 338         int        num;
 339
 340         DECLARE_LL_PROC_PPOS_DECL;
 341
 342         idx = LNET_PHASH_IDX_GET(*ppos);
 343         num = LNET_PHASH_NUM_GET(*ppos);
 344
 345         CLASSERT ((1 << LNET_PHASH_BITS) > LNET_PEER_HASHSIZE);
 346
 347         LASSERT (!write);
 348
 349         if (*lenp == 0)
 350                 return 0;
 351
 352         LIBCFS_ALLOC(tmpstr, tmpsiz);
 353         if (tmpstr == NULL)
 354                 return -ENOMEM;
 355
 356         s = tmpstr; /* points to current position in tmpstr[] */
 357
 358         if (*ppos == 0) {
 359                 s += snprintf(s, tmpstr + tmpsiz - s,
 360                               "%-24s %4s %5s %5s %5s %5s %5s %5s %s\n",
 361                               "nid", "refs", "state", "max",
 362                               "rtr", "min", "tx", "min", "queue");
 363                 LASSERT (tmpstr + tmpsiz - s > 0);
 364
 365                 LNET_LOCK();
 366                 *ver_p  = (unsigned int)the_lnet.ln_peertable_version;
 367                 LNET_UNLOCK();
 368
 369                 num++;
 370         } else {
 371                 struct list_head  *p    = NULL;
 372                 lnet_peer_t       *peer = NULL;
 373                 int                skip = num - 1;
 374
 375                 LNET_LOCK();
 376
 377                 if (*ver_p != (unsigned int)the_lnet.ln_peertable_version) {
 378                         LNET_UNLOCK();
 379                         LIBCFS_FREE(tmpstr, tmpsiz);
 380                         return -ESTALE;
 381                 }
 382
 383                 while (idx < LNET_PEER_HASHSIZE) {
 384                         if (p == NULL)
 385                                 p = the_lnet.ln_peer_hash[idx].next;
 386
 387                         while (p != &the_lnet.ln_peer_hash[idx]) {
 388                                 lnet_peer_t *lp = list_entry(p, lnet_peer_t,
 389                                                              lp_hashlist);
 390                                 if (skip == 0) {
 391                                         peer = lp;
 392
 393                                         /* minor optimiztion: start from idx+1
 394                                          * on next iteration if we've just
 395                                          * drained lp_hashlist */
 396                                         if (lp->lp_hashlist.next ==
 397                                             &the_lnet.ln_peer_hash[idx]) {
 398                                                 num = 1;
 399                                                 idx++;
 400                                         } else
 401                                                 num++;
 402
 403                                         break;
 404                                 } else
 405                                         skip--;
 406
 407                                 p = lp->lp_hashlist.next;
 408                         }
 409
 410                         if (peer != NULL)
 411                                 break;
 412
 413                         p = NULL;
 414                         num = 1;
 415                         idx++;
 416                 }
 417
 418                 if (peer != NULL) {
 419                         lnet_nid_t nid       = peer->lp_nid;
 420                         int        nrefs     = peer->lp_refcount;
 421                         char      *aliveness = "NA";
 422                         int        maxcr     = peer->lp_ni->ni_peertxcredits;
 423                         int        txcr      = peer->lp_txcredits;
 424                         int        mintxcr   = peer->lp_mintxcredits;
 425                         int        rtrcr     = peer->lp_rtrcredits;
 426                         int        minrtrcr  = peer->lp_minrtrcredits;
 427                         int        txqnob    = peer->lp_txqnob;
 428
 429                         if (lnet_isrouter(peer) ||
 430                             peer->lp_ni->ni_peertimeout > 0)
 431                                 aliveness = peer->lp_alive ? "up" : "down";
 432
 433                         s += snprintf(s, tmpstr + tmpsiz - s,
 434                                       "%-24s %4d %5s %5d %5d %5d %5d %5d %d\n",
 435                                       libcfs_nid2str(nid), nrefs, aliveness,
 436                                       maxcr, rtrcr, minrtrcr, txcr,
 437                                       mintxcr, txqnob);
 438                         LASSERT (tmpstr + tmpsiz - s > 0);
 439                 }
 440
 441                 LNET_UNLOCK();
 442         }
 443
 444         len = s - tmpstr;     /* how many bytes was written */
 445
 446         if (len > *lenp) {    /* linux-supplied buffer is too small */
 447                 rc = -EINVAL;
 448         } else if (len > 0) { /* wrote something */
 449                 if (copy_to_user(buffer, tmpstr, len))
 450                         rc = -EFAULT;
 451                 else
 452                         *ppos = LNET_PHASH_POS_MAKE(idx, num);
 453         }
 454
 455         LIBCFS_FREE(tmpstr, tmpsiz);
 456
 457         if (rc == 0)
 458                 *lenp = len;
 459
 460         return rc;
 461 }
 462
 463 static int __proc_lnet_buffers(void *data, int write,
 464                                loff_t pos, void *buffer, int nob)
 465 {
 466
 467         int              rc;
 468         int              len;
 469         char            *s;
 470         char            *tmpstr;
 471         const int        tmpsiz = 64 * (LNET_NRBPOOLS + 1); /* (4 %d) * 4 */
 472         int              idx;
 473
 474         LASSERT (!write);
 475
 476         LIBCFS_ALLOC(tmpstr, tmpsiz);
 477         if (tmpstr == NULL)
 478                 return -ENOMEM;
 479
 480         s = tmpstr; /* points to current position in tmpstr[] */
 481
 482         s += snprintf(s, tmpstr + tmpsiz - s,
 483                       "%5s %5s %7s %7s\n",
 484                       "pages", "count", "credits", "min");
 485         LASSERT (tmpstr + tmpsiz - s > 0);
 486
 487         LNET_LOCK();
 488
 489         for (idx = 0; idx < LNET_NRBPOOLS; idx++) {
 490                 lnet_rtrbufpool_t *rbp = &the_lnet.ln_rtrpools[idx];
 491
 492                 int npages = rbp->rbp_npages;
 493                 int nbuf   = rbp->rbp_nbuffers;
 494                 int cr     = rbp->rbp_credits;
 495                 int mincr  = rbp->rbp_mincredits;
 496
 497                 s += snprintf(s, tmpstr + tmpsiz - s,
 498                               "%5d %5d %7d %7d\n",
 499                               npages, nbuf, cr, mincr);
 500                 LASSERT (tmpstr + tmpsiz - s > 0);
 501         }
 502
 503         LNET_UNLOCK();
 504
 505         len = s - tmpstr;
 506
 507         if (pos >= min_t(int, len, strlen(tmpstr)))
 508                 rc = 0;
 509         else
 510                 rc = trace_copyout_string(buffer, nob,
 511                                           tmpstr + pos, NULL);
 512
 513         LIBCFS_FREE(tmpstr, tmpsiz);
 514         return rc;
 515 }
 516
 517 DECLARE_PROC_HANDLER(proc_lnet_buffers);
 518
 519 int LL_PROC_PROTO(proc_lnet_nis)
 520 {
 521         int        rc = 0;
 522         char      *tmpstr;
 523         char      *s;
 524         const int  tmpsiz = 256;
 525         int        len;
 526
 527         DECLARE_LL_PROC_PPOS_DECL;
 528
 529         LASSERT (!write);
 530
 531         if (*lenp == 0)
 532                 return 0;
 533
 534         LIBCFS_ALLOC(tmpstr, tmpsiz);
 535         if (tmpstr == NULL)
 536                 return -ENOMEM;
 537
 538         s = tmpstr; /* points to current position in tmpstr[] */
 539
 540         if (*ppos == 0) {
 541                 s += snprintf(s, tmpstr + tmpsiz - s,
 542                               "%-24s %4s %4s %4s %5s %5s %5s\n",
 543                               "nid", "refs", "peer", "rtr", "max",
 544                               "tx", "min");
 545                 LASSERT (tmpstr + tmpsiz - s > 0);
 546         } else {
 547                 struct list_head  *n;
 548                 lnet_ni_t         *ni   = NULL;
 549                 int                skip = *ppos - 1;
 550
 551                 LNET_LOCK();
 552
 553                 n = the_lnet.ln_nis.next;
 554
 555                 while (n != &the_lnet.ln_nis) {
 556                         lnet_ni_t *a_ni = list_entry(n, lnet_ni_t, ni_list);
 557
 558                         if (skip == 0) {
 559                                 ni = a_ni;
 560                                 break;
 561                         } else
 562                                 skip--;
 563
 564                         n = n->next;
 565                 }
 566
 567                 if (ni != NULL) {
 568                         int        maxtxcr = ni->ni_maxtxcredits;
 569                         int        txcr = ni->ni_txcredits;
 570                         int        mintxcr = ni->ni_mintxcredits;
 571                         int        npeertxcr = ni->ni_peertxcredits;
 572                         int        npeerrtrcr = ni->ni_peerrtrcredits;
 573                         lnet_nid_t nid = ni->ni_nid;
 574                         int        nref = ni->ni_refcount;
 575
 576                         s += snprintf(s, tmpstr + tmpsiz - s,
 577                                       "%-24s %4d %4d %4d %5d %5d %5d\n",
 578                                       libcfs_nid2str(nid), nref,
 579                                       npeertxcr, npeerrtrcr, maxtxcr,
 580                                       txcr, mintxcr);
 581                         LASSERT (tmpstr + tmpsiz - s > 0);
 582                 }
 583
 584                 LNET_UNLOCK();
 585         }
 586
 587         len = s - tmpstr;     /* how many bytes was written */
 588
 589         if (len > *lenp) {    /* linux-supplied buffer is too small */
 590                 rc = -EINVAL;
 591         } else if (len > 0) { /* wrote something */
 592                 if (copy_to_user(buffer, tmpstr, len))
 593                         rc = -EFAULT;
 594                 else
 595                         *ppos += 1;
 596         }
 597
 598         LIBCFS_FREE(tmpstr, tmpsiz);
 599
 600         if (rc == 0)
 601                 *lenp = len;
 602
 603         return rc;
 604 }
 605
 606 static cfs_sysctl_table_t lnet_table[] = {
 607         /*
 608          * NB No .strategy entries have been provided since sysctl(8) prefers
 609          * to go via /proc for portability.
 610          */
 611         {
 612                 .ctl_name = PSDEV_LNET_STATS,
 613                 .procname = "stats",
 614                 .mode     = 0644,
 615                 .proc_handler = &proc_lnet_stats,
 616         },
 617         {
 618                 .ctl_name = PSDEV_LNET_ROUTES,
 619                 .procname = "routes",
 620                 .mode     = 0444,
 621                 .proc_handler = &proc_lnet_routes,
 622         },
 623         {
 624                 .ctl_name = PSDEV_LNET_ROUTERS,
 625                 .procname = "routers",
 626                 .mode     = 0444,
 627                 .proc_handler = &proc_lnet_routers,
 628         },
 629         {
 630                 .ctl_name = PSDEV_LNET_PEERS,
 631                 .procname = "peers",
 632                 .mode     = 0444,
 633                 .proc_handler = &proc_lnet_peers,
 634         },
 635         {
 636                 .ctl_name = PSDEV_LNET_PEERS,
 637                 .procname = "buffers",
 638                 .mode     = 0444,
 639                 .proc_handler = &proc_lnet_buffers,
 640         },
 641         {
 642                 .ctl_name = PSDEV_LNET_NIS,
 643                 .procname = "nis",
 644                 .mode     = 0444,
 645                 .proc_handler = &proc_lnet_nis,
 646         },
 647         {0}
 648 };
 649
 650 static cfs_sysctl_table_t top_table[] = {
 651         {
 652                 .ctl_name = CTL_LNET,
 653                 .procname = "lnet",
 654                 .mode     = 0555,
 655                 .data     = NULL,
 656                 .maxlen   = 0,
 657                 .child    = lnet_table,
 658         },
 659         {
 660                 .ctl_name = 0
 661         }
 662 };
 663
 664 void
 665 lnet_proc_init(void)
 666 {
 667 #ifdef CONFIG_SYSCTL
 668         if (lnet_table_header == NULL)
 669                 lnet_table_header = cfs_register_sysctl_table(top_table, 0);
 670 #endif
 671 }
 672
 673 void
 674 lnet_proc_fini(void)
 675 {
 676 #ifdef CONFIG_SYSCTL
 677         if (lnet_table_header != NULL)
 678                 cfs_unregister_sysctl_table(lnet_table_header);
 679
 680         lnet_table_header = NULL;
 681 #endif
 682 }
 683
 684 #else
 685
 686 void
 687 lnet_proc_init(void)
 688 {
 689 }
 690
 691 void
 692 lnet_proc_fini(void)
 693 {
 694 }
 695
 696 #endif