lnet/klnds/o2iblnd/o2iblnd_modparams.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30 /*
  31  * This file is part of Lustre, http://www.lustre.org/
  32  * Lustre is a trademark of Sun Microsystems, Inc.
  33  *
  34  * lnet/klnds/o2iblnd/o2iblnd_modparams.c
  35  *
  36  * Author: Eric Barton <eric@bartonsoftware.com>
  37  */
  38
  39 #include "o2iblnd.h"
  40
  41 static int service = 987;
  42 CFS_MODULE_PARM(service, "i", int, 0444,
  43                 "service number (within RDMA_PS_TCP)");
  44
  45 static int cksum = 0;
  46 CFS_MODULE_PARM(cksum, "i", int, 0644,
  47                 "set non-zero to enable message (not RDMA) checksums");
  48
  49 static int timeout = 50;
  50 CFS_MODULE_PARM(timeout, "i", int, 0644,
  51                 "timeout (seconds)");
  52
  53 static int ntx = 256;
  54 CFS_MODULE_PARM(ntx, "i", int, 0444,
  55                 "# of message descriptors");
  56
  57 static int credits = 64;
  58 CFS_MODULE_PARM(credits, "i", int, 0444,
  59                 "# concurrent sends");
  60
  61 static int peer_credits = 8;
  62 CFS_MODULE_PARM(peer_credits, "i", int, 0444,
  63                 "# concurrent sends to 1 peer");
  64
  65 static int peer_credits_hiw = 0;
  66 CFS_MODULE_PARM(peer_credits_hiw, "i", int, 0444,
  67                 "when eagerly to return credits");
  68
  69 static int peer_buffer_credits = 0;
  70 CFS_MODULE_PARM(peer_buffer_credits, "i", int, 0444,
  71                 "# per-peer router buffer credits");
  72
  73 static int peer_timeout = 180;
  74 CFS_MODULE_PARM(peer_timeout, "i", int, 0444,
  75                 "Seconds without aliveness news to declare peer dead (<=0 to disable)");
  76
  77 static char *ipif_name = "ib0";
  78 CFS_MODULE_PARM(ipif_name, "s", charp, 0444,
  79                 "IPoIB interface name");
  80
  81 static int retry_count = 5;
  82 CFS_MODULE_PARM(retry_count, "i", int, 0644,
  83                 "Retransmissions when no ACK received");
  84
  85 static int rnr_retry_count = 6;
  86 CFS_MODULE_PARM(rnr_retry_count, "i", int, 0644,
  87                 "RNR retransmissions");
  88
  89 static int keepalive = 100;
  90 CFS_MODULE_PARM(keepalive, "i", int, 0644,
  91                 "Idle time in seconds before sending a keepalive");
  92
  93 static int ib_mtu = 0;
  94 CFS_MODULE_PARM(ib_mtu, "i", int, 0444,
  95                 "IB MTU 256/512/1024/2048/4096");
  96
  97 static int concurrent_sends = 0;
  98 CFS_MODULE_PARM(concurrent_sends, "i", int, 0444,
  99                 "send work-queue sizing");
 100
 101 static int map_on_demand = 0;
 102 CFS_MODULE_PARM(map_on_demand, "i", int, 0444,
 103                 "map on demand");
 104
 105 static int fmr_pool_size = 512;
 106 CFS_MODULE_PARM(fmr_pool_size, "i", int, 0444,
 107                 "size of the fmr pool (>= ntx / 4)");
 108
 109 static int fmr_flush_trigger = 384;
 110 CFS_MODULE_PARM(fmr_flush_trigger, "i", int, 0444,
 111                 "# dirty FMRs that triggers pool flush");
 112
 113 static int fmr_cache = 1;
 114 CFS_MODULE_PARM(fmr_cache, "i", int, 0444,
 115                 "non-zero to enable FMR caching");
 116
 117 static int pmr_pool_size = 512;
 118 CFS_MODULE_PARM(pmr_pool_size, "i", int, 0444,
 119                 "size of the MR cache pmr pool");
 120
 121 /*
 122  * 0: disable failover
 123  * 1: enable failover if necessary
 124  * 2: force to failover (for debug)
 125  */
 126 static int dev_failover = 0;
 127 CFS_MODULE_PARM(dev_failover, "i", int, 0444,
 128                "HCA failover for bonding (0 off, 1 on, other values reserved)");
 129
 130
 131 static int require_privileged_port = 0;
 132 CFS_MODULE_PARM(require_privileged_port, "i", int, 0644,
 133                 "require privileged port when accepting connection");
 134
 135 static int use_privileged_port = 1;
 136 CFS_MODULE_PARM(use_privileged_port, "i", int, 0644,
 137                 "use privileged port when initiating connection");
 138
 139 kib_tunables_t kiblnd_tunables = {
 140         .kib_dev_failover           = &dev_failover,
 141         .kib_service                = &service,
 142         .kib_cksum                  = &cksum,
 143         .kib_timeout                = &timeout,
 144         .kib_keepalive              = &keepalive,
 145         .kib_ntx                    = &ntx,
 146         .kib_credits                = &credits,
 147         .kib_peertxcredits          = &peer_credits,
 148         .kib_peercredits_hiw        = &peer_credits_hiw,
 149         .kib_peerrtrcredits         = &peer_buffer_credits,
 150         .kib_peertimeout            = &peer_timeout,
 151         .kib_default_ipif           = &ipif_name,
 152         .kib_retry_count            = &retry_count,
 153         .kib_rnr_retry_count        = &rnr_retry_count,
 154         .kib_concurrent_sends       = &concurrent_sends,
 155         .kib_ib_mtu                 = &ib_mtu,
 156         .kib_map_on_demand          = &map_on_demand,
 157         .kib_fmr_pool_size          = &fmr_pool_size,
 158         .kib_fmr_flush_trigger      = &fmr_flush_trigger,
 159         .kib_fmr_cache              = &fmr_cache,
 160         .kib_pmr_pool_size          = &pmr_pool_size,
 161         .kib_require_priv_port      = &require_privileged_port,
 162         .kib_use_priv_port          = &use_privileged_port
 163 };
 164
 165 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
 166
 167 static char ipif_basename_space[32];
 168
 169 #ifndef HAVE_SYSCTL_UNNUMBERED
 170
 171 enum {
 172         O2IBLND_SERVICE  = 1,
 173         O2IBLND_CKSUM,
 174         O2IBLND_TIMEOUT,
 175         O2IBLND_NTX,
 176         O2IBLND_CREDITS,
 177         O2IBLND_PEER_TXCREDITS,
 178         O2IBLND_PEER_CREDITS_HIW,
 179         O2IBLND_PEER_RTRCREDITS,
 180         O2IBLND_PEER_TIMEOUT,
 181         O2IBLND_IPIF_BASENAME,
 182         O2IBLND_RETRY_COUNT,
 183         O2IBLND_RNR_RETRY_COUNT,
 184         O2IBLND_KEEPALIVE,
 185         O2IBLND_CONCURRENT_SENDS,
 186         O2IBLND_IB_MTU,
 187         O2IBLND_MAP_ON_DEMAND,
 188         O2IBLND_FMR_POOL_SIZE,
 189         O2IBLND_FMR_FLUSH_TRIGGER,
 190         O2IBLND_FMR_CACHE,
 191         O2IBLND_PMR_POOL_SIZE,
 192         O2IBLND_DEV_FAILOVER
 193 };
 194 #else
 195
 196 #define O2IBLND_SERVICE          CTL_UNNUMBERED
 197 #define O2IBLND_CKSUM            CTL_UNNUMBERED
 198 #define O2IBLND_TIMEOUT          CTL_UNNUMBERED
 199 #define O2IBLND_NTX              CTL_UNNUMBERED
 200 #define O2IBLND_CREDITS          CTL_UNNUMBERED
 201 #define O2IBLND_PEER_TXCREDITS   CTL_UNNUMBERED
 202 #define O2IBLND_PEER_CREDITS_HIW CTL_UNNUMBERED
 203 #define O2IBLND_PEER_RTRCREDITS  CTL_UNNUMBERED
 204 #define O2IBLND_PEER_TIMEOUT     CTL_UNNUMBERED
 205 #define O2IBLND_IPIF_BASENAME    CTL_UNNUMBERED
 206 #define O2IBLND_RETRY_COUNT      CTL_UNNUMBERED
 207 #define O2IBLND_RNR_RETRY_COUNT  CTL_UNNUMBERED
 208 #define O2IBLND_KEEPALIVE        CTL_UNNUMBERED
 209 #define O2IBLND_CONCURRENT_SENDS CTL_UNNUMBERED
 210 #define O2IBLND_IB_MTU           CTL_UNNUMBERED
 211 #define O2IBLND_MAP_ON_DEMAND    CTL_UNNUMBERED
 212 #define O2IBLND_FMR_POOL_SIZE    CTL_UNNUMBERED
 213 #define O2IBLND_FMR_FLUSH_TRIGGER CTL_UNNUMBERED
 214 #define O2IBLND_FMR_CACHE        CTL_UNNUMBERED
 215 #define O2IBLND_PMR_POOL_SIZE    CTL_UNNUMBERED
 216 #define O2IBLND_DEV_FAILOVER     CTL_UNNUMBERED
 217
 218 #endif
 219
 220 static cfs_sysctl_table_t kiblnd_ctl_table[] = {
 221         {
 222                 .ctl_name = O2IBLND_SERVICE,
 223                 .procname = "service",
 224                 .data     = &service,
 225                 .maxlen   = sizeof(int),
 226                 .mode     = 0444,
 227                 .proc_handler = &proc_dointvec
 228         },
 229         {
 230                 .ctl_name = O2IBLND_CKSUM,
 231                 .procname = "cksum",
 232                 .data     = &cksum,
 233                 .maxlen   = sizeof(int),
 234                 .mode     = 0644,
 235                 .proc_handler = &proc_dointvec
 236         },
 237         {
 238                 .ctl_name = O2IBLND_TIMEOUT,
 239                 .procname = "timeout",
 240                 .data     = &timeout,
 241                 .maxlen   = sizeof(int),
 242                 .mode     = 0644,
 243                 .proc_handler = &proc_dointvec
 244         },
 245         {
 246                 .ctl_name = O2IBLND_NTX,
 247                 .procname = "ntx",
 248                 .data     = &ntx,
 249                 .maxlen   = sizeof(int),
 250                 .mode     = 0444,
 251                 .proc_handler = &proc_dointvec
 252         },
 253         {
 254                 .ctl_name = O2IBLND_CREDITS,
 255                 .procname = "credits",
 256                 .data     = &credits,
 257                 .maxlen   = sizeof(int),
 258                 .mode     = 0444,
 259                 .proc_handler = &proc_dointvec
 260         },
 261         {
 262                 .ctl_name = O2IBLND_PEER_TXCREDITS,
 263                 .procname = "peer_credits",
 264                 .data     = &peer_credits,
 265                 .maxlen   = sizeof(int),
 266                 .mode     = 0444,
 267                 .proc_handler = &proc_dointvec
 268         },
 269         {
 270                 .ctl_name = O2IBLND_PEER_CREDITS_HIW,
 271                 .procname = "peer_credits_hiw",
 272                 .data     = &peer_credits_hiw,
 273                 .maxlen   = sizeof(int),
 274                 .mode     = 0444,
 275                 .proc_handler = &proc_dointvec
 276         },
 277         {
 278                 .ctl_name = O2IBLND_PEER_RTRCREDITS,
 279                 .procname = "peer_buffer_credits",
 280                 .data     = &peer_buffer_credits,
 281                 .maxlen   = sizeof(int),
 282                 .mode     = 0444,
 283                 .proc_handler = &proc_dointvec
 284         },
 285         {
 286                 .ctl_name = O2IBLND_PEER_TIMEOUT,
 287                 .procname = "peer_timeout",
 288                 .data     = &peer_timeout,
 289                 .maxlen   = sizeof(int),
 290                 .mode     = 0444,
 291                 .proc_handler = &proc_dointvec
 292         },
 293         {
 294                 .ctl_name = O2IBLND_IPIF_BASENAME,
 295                 .procname = "ipif_name",
 296                 .data     = ipif_basename_space,
 297                 .maxlen   = sizeof(ipif_basename_space),
 298                 .mode     = 0444,
 299                 .proc_handler = &proc_dostring
 300         },
 301         {
 302                 .ctl_name = O2IBLND_RETRY_COUNT,
 303                 .procname = "retry_count",
 304                 .data     = &retry_count,
 305                 .maxlen   = sizeof(int),
 306                 .mode     = 0644,
 307                 .proc_handler = &proc_dointvec
 308         },
 309         {
 310                 .ctl_name = O2IBLND_RNR_RETRY_COUNT,
 311                 .procname = "rnr_retry_count",
 312                 .data     = &rnr_retry_count,
 313                 .maxlen   = sizeof(int),
 314                 .mode     = 0644,
 315                 .proc_handler = &proc_dointvec
 316         },
 317         {
 318                 .ctl_name = O2IBLND_KEEPALIVE,
 319                 .procname = "keepalive",
 320                 .data     = &keepalive,
 321                 .maxlen   = sizeof(int),
 322                 .mode     = 0644,
 323                 .proc_handler = &proc_dointvec
 324         },
 325         {
 326                 .ctl_name = O2IBLND_CONCURRENT_SENDS,
 327                 .procname = "concurrent_sends",
 328                 .data     = &concurrent_sends,
 329                 .maxlen   = sizeof(int),
 330                 .mode     = 0444,
 331                 .proc_handler = &proc_dointvec
 332         },
 333         {
 334                 .ctl_name = O2IBLND_IB_MTU,
 335                 .procname = "ib_mtu",
 336                 .data     = &ib_mtu,
 337                 .maxlen   = sizeof(int),
 338                 .mode     = 0444,
 339                 .proc_handler = &proc_dointvec
 340         },
 341         {
 342                 .ctl_name = O2IBLND_MAP_ON_DEMAND,
 343                 .procname = "map_on_demand",
 344                 .data     = &map_on_demand,
 345                 .maxlen   = sizeof(int),
 346                 .mode     = 0444,
 347                 .proc_handler = &proc_dointvec
 348         },
 349
 350         {
 351                 .ctl_name = O2IBLND_FMR_POOL_SIZE,
 352                 .procname = "fmr_pool_size",
 353                 .data     = &fmr_pool_size,
 354                 .maxlen   = sizeof(int),
 355                 .mode     = 0444,
 356                 .proc_handler = &proc_dointvec
 357         },
 358         {
 359                 .ctl_name = O2IBLND_FMR_FLUSH_TRIGGER,
 360                 .procname = "fmr_flush_trigger",
 361                 .data     = &fmr_flush_trigger,
 362                 .maxlen   = sizeof(int),
 363                 .mode     = 0444,
 364                 .proc_handler = &proc_dointvec
 365         },
 366         {
 367                 .ctl_name = O2IBLND_FMR_CACHE,
 368                 .procname = "fmr_cache",
 369                 .data     = &fmr_cache,
 370                 .maxlen   = sizeof(int),
 371                 .mode     = 0444,
 372                 .proc_handler = &proc_dointvec
 373         },
 374         {
 375                 .ctl_name = O2IBLND_PMR_POOL_SIZE,
 376                 .procname = "pmr_pool_size",
 377                 .data     = &pmr_pool_size,
 378                 .maxlen   = sizeof(int),
 379                 .mode     = 0444,
 380                 .proc_handler = &proc_dointvec
 381         },
 382         {
 383                 .ctl_name = O2IBLND_DEV_FAILOVER,
 384                 .procname = "dev_failover",
 385                 .data     = &dev_failover,
 386                 .maxlen   = sizeof(int),
 387                 .mode     = 0444,
 388                 .proc_handler = &proc_dointvec
 389         },
 390         {0}
 391 };
 392
 393 static cfs_sysctl_table_t kiblnd_top_ctl_table[] = {
 394         {
 395                 .ctl_name = CTL_O2IBLND,
 396                 .procname = "o2iblnd",
 397                 .data     = NULL,
 398                 .maxlen   = 0,
 399                 .mode     = 0555,
 400                 .child    = kiblnd_ctl_table
 401         },
 402         {0}
 403 };
 404
 405 void
 406 kiblnd_initstrtunable(char *space, char *str, int size)
 407 {
 408         strncpy(space, str, size);
 409         space[size-1] = 0;
 410 }
 411
 412 void
 413 kiblnd_sysctl_init (void)
 414 {
 415         kiblnd_initstrtunable(ipif_basename_space, ipif_name,
 416                               sizeof(ipif_basename_space));
 417
 418         kiblnd_tunables.kib_sysctl =
 419                 cfs_register_sysctl_table(kiblnd_top_ctl_table, 0);
 420
 421         if (kiblnd_tunables.kib_sysctl == NULL)
 422                 CWARN("Can't setup /proc tunables\n");
 423 }
 424
 425 void
 426 kiblnd_sysctl_fini (void)
 427 {
 428         if (kiblnd_tunables.kib_sysctl != NULL)
 429                 cfs_unregister_sysctl_table(kiblnd_tunables.kib_sysctl);
 430 }
 431
 432 #else
 433
 434 void
 435 kiblnd_sysctl_init (void)
 436 {
 437 }
 438
 439 void
 440 kiblnd_sysctl_fini (void)
 441 {
 442 }
 443
 444 #endif
 445
 446 int
 447 kiblnd_tunables_init (void)
 448 {
 449         if (kiblnd_translate_mtu(*kiblnd_tunables.kib_ib_mtu) < 0) {
 450                 CERROR("Invalid ib_mtu %d, expected 256/512/1024/2048/4096\n",
 451                        *kiblnd_tunables.kib_ib_mtu);
 452                 return -EINVAL;
 453         }
 454
 455         if (*kiblnd_tunables.kib_peertxcredits < IBLND_CREDITS_DEFAULT)
 456                 *kiblnd_tunables.kib_peertxcredits = IBLND_CREDITS_DEFAULT;
 457
 458         if (*kiblnd_tunables.kib_peertxcredits > IBLND_CREDITS_MAX)
 459                 *kiblnd_tunables.kib_peertxcredits = IBLND_CREDITS_MAX;
 460
 461         if (*kiblnd_tunables.kib_peertxcredits > *kiblnd_tunables.kib_credits)
 462                 *kiblnd_tunables.kib_peertxcredits = *kiblnd_tunables.kib_credits;
 463
 464         if (*kiblnd_tunables.kib_peercredits_hiw < *kiblnd_tunables.kib_peertxcredits / 2)
 465                 *kiblnd_tunables.kib_peercredits_hiw = *kiblnd_tunables.kib_peertxcredits / 2;
 466
 467         if (*kiblnd_tunables.kib_peercredits_hiw >= *kiblnd_tunables.kib_peertxcredits)
 468                 *kiblnd_tunables.kib_peercredits_hiw = *kiblnd_tunables.kib_peertxcredits - 1;
 469
 470         if (*kiblnd_tunables.kib_map_on_demand < 0 ||
 471             *kiblnd_tunables.kib_map_on_demand > IBLND_MAX_RDMA_FRAGS)
 472                 *kiblnd_tunables.kib_map_on_demand = 0; /* disable map-on-demand */
 473
 474         if (*kiblnd_tunables.kib_map_on_demand == 1)
 475                 *kiblnd_tunables.kib_map_on_demand = 2; /* don't make sense to create map if only one fragment */
 476
 477         if (*kiblnd_tunables.kib_concurrent_sends == 0) {
 478                 if (*kiblnd_tunables.kib_map_on_demand > 0 &&
 479                     *kiblnd_tunables.kib_map_on_demand <= IBLND_MAX_RDMA_FRAGS / 8)
 480                         *kiblnd_tunables.kib_concurrent_sends = (*kiblnd_tunables.kib_peertxcredits) * 2;
 481                 else
 482                         *kiblnd_tunables.kib_concurrent_sends = (*kiblnd_tunables.kib_peertxcredits);
 483         }
 484
 485         if (*kiblnd_tunables.kib_concurrent_sends > *kiblnd_tunables.kib_peertxcredits * 2)
 486                 *kiblnd_tunables.kib_concurrent_sends = *kiblnd_tunables.kib_peertxcredits * 2;
 487
 488         if (*kiblnd_tunables.kib_concurrent_sends < *kiblnd_tunables.kib_peertxcredits / 2)
 489                 *kiblnd_tunables.kib_concurrent_sends = *kiblnd_tunables.kib_peertxcredits / 2;
 490
 491         if (*kiblnd_tunables.kib_concurrent_sends < *kiblnd_tunables.kib_peertxcredits) {
 492                 CWARN("Concurrent sends %d is lower than message queue size: %d, "
 493                       "performance may drop slightly.\n",
 494                       *kiblnd_tunables.kib_concurrent_sends, *kiblnd_tunables.kib_peertxcredits);
 495         }
 496
 497         kiblnd_sysctl_init();
 498         return 0;
 499 }
 500
 501 void
 502 kiblnd_tunables_fini (void)
 503 {
 504         kiblnd_sysctl_fini();
 505 }