lnet/klnds/viblnd/viblnd_modparams.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2004 Cluster File Systems, Inc.
   5  *   Author: Eric Barton <eric@bartonsoftware.com>
   6  *
   7  *   This file is part of Lustre, http://www.lustre.org.
   8  *
   9  *   Lustre 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  *   Lustre 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 Lustre; if not, write to the Free Software
  20  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  */
  23
  24 #include "viblnd.h"
  25
  26 static int service_number = 0x11b9a2;
  27 CFS_MODULE_PARM(service_number, "i", int, 0444,
  28                 "IB service number");
  29
  30 static int min_reconnect_interval = 1;
  31 CFS_MODULE_PARM(min_reconnect_interval, "i", int, 0644,
  32                 "minimum connection retry interval (seconds)");
  33
  34 static int max_reconnect_interval = 60;
  35 CFS_MODULE_PARM(max_reconnect_interval, "i", int, 0644,
  36                 "maximum connection retry interval (seconds)");
  37
  38 static int concurrent_peers = 1152;
  39 CFS_MODULE_PARM(concurrent_peers, "i", int, 0444,
  40                 "maximum number of peers that may connect");
  41
  42 static int cksum = 0;
  43 CFS_MODULE_PARM(cksum, "i", int, 0644,
  44                 "set non-zero to enable message (not RDMA) checksums");
  45
  46 static int timeout = 50;
  47 CFS_MODULE_PARM(timeout, "i", int, 0644,
  48                 "timeout (seconds)");
  49
  50 static int ntx = 256;
  51 CFS_MODULE_PARM(ntx, "i", int, 0444,
  52                 "# of message descriptors");
  53
  54 static int credits = 128;
  55 CFS_MODULE_PARM(credits, "i", int, 0444,
  56                 "# concurrent sends");
  57
  58 static int peer_credits = 8;
  59 CFS_MODULE_PARM(peer_credits, "i", int, 0444,
  60                 "# concurrent sends to 1 peer");
  61
  62 static int arp_retries = 3;
  63 CFS_MODULE_PARM(arp_retries, "i", int, 0644,
  64                 "# of times to retry ARP");
  65
  66 static char *hca_basename = "InfiniHost";
  67 CFS_MODULE_PARM(hca_basename, "s", charp, 0444,
  68                 "HCA base name");
  69
  70 static char *ipif_basename = "ipoib";
  71 CFS_MODULE_PARM(ipif_basename, "s", charp, 0444,
  72                 "IPoIB interface base name");
  73
  74 static int local_ack_timeout = 0x12;
  75 CFS_MODULE_PARM(local_ack_timeout, "i", int, 0644,
  76                 "ACK timeout for low-level 'sends'");
  77
  78 static int retry_cnt = 7;
  79 CFS_MODULE_PARM(retry_cnt, "i", int, 0644,
  80                 "Retransmissions when no ACK received");
  81
  82 static int rnr_cnt = 6;
  83 CFS_MODULE_PARM(rnr_cnt, "i", int, 0644,
  84                 "RNR retransmissions");
  85
  86 static int rnr_nak_timer = 0x10;
  87 CFS_MODULE_PARM(rnr_nak_timer, "i", int, 0644,
  88                 "RNR retransmission interval");
  89
  90 static int keepalive = 100;
  91 CFS_MODULE_PARM(keepalive, "i", int, 0644,
  92                 "Idle time in seconds before sending a keepalive");
  93
  94 static int concurrent_sends = IBNAL_RX_MSGS;
  95 CFS_MODULE_PARM(concurrent_sends, "i", int, 0644,
  96                 "send work-queue sizing");
  97
  98 #if IBNAL_USE_FMR
  99 static int fmr_remaps = 1000;
 100 CFS_MODULE_PARM(fmr_remaps, "i", int, 0444,
 101                 "FMR mappings allowed before unmap");
 102 #endif
 103
 104 kib_tunables_t kibnal_tunables = {
 105         .kib_service_number         = &service_number,
 106         .kib_min_reconnect_interval = &min_reconnect_interval,
 107         .kib_max_reconnect_interval = &max_reconnect_interval,
 108         .kib_concurrent_peers       = &concurrent_peers,
 109         .kib_cksum                  = &cksum,
 110         .kib_timeout                = &timeout,
 111         .kib_ntx                    = &ntx,
 112         .kib_credits                = &credits,
 113         .kib_peercredits            = &peer_credits,
 114         .kib_arp_retries            = &arp_retries,
 115         .kib_hca_basename           = &hca_basename,
 116         .kib_ipif_basename          = &ipif_basename,
 117         .kib_local_ack_timeout      = &local_ack_timeout,
 118         .kib_retry_cnt              = &retry_cnt,
 119         .kib_rnr_cnt                = &rnr_cnt,
 120         .kib_rnr_nak_timer          = &rnr_nak_timer,
 121         .kib_keepalive              = &keepalive,
 122         .kib_concurrent_sends       = &concurrent_sends,
 123 #if IBNAL_USE_FMR
 124         .kib_fmr_remaps             = &fmr_remaps,
 125 #endif
 126 };
 127
 128 #if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM
 129
 130 static char hca_basename_space[32];
 131 static char ipif_basename_space[32];
 132
 133 static cfs_sysctl_table_t kibnal_ctl_table[] = {
 134         {
 135                 .ctl_name = 1,
 136                 .procname = "service_number",
 137                 .data     = &service_number,
 138                 .maxlen   = sizeof(int),
 139                 .mode     = 0444,
 140                 .proc_handler = &proc_dointvec
 141         },
 142         {
 143                 .ctl_name = 2,
 144                 .procname = "min_reconnect_interval",
 145                 .data     = &min_reconnect_interval,
 146                 .maxlen   = sizeof(int),
 147                 .mode     = 0644,
 148                 .proc_handler = &proc_dointvec
 149         },
 150         {
 151                 .ctl_name = 3,
 152                 .procname = "max_reconnect_interval",
 153                 .data     = &max_reconnect_interval,
 154                 .maxlen   = sizeof(int),
 155                 .mode     = 0644,
 156                 .proc_handler = &proc_dointvec
 157         },
 158         {
 159                 .ctl_name = 4,
 160                 .procname = "concurrent_peers",
 161                 .data     = &concurrent_peers,
 162                 .maxlen   = sizeof(int),
 163                 .mode     = 0444,
 164                 .proc_handler = &proc_dointvec
 165         },
 166         {
 167                 ,ctl_name = 5,
 168                 .procname = "cksum",
 169                 .data     = &cksum,
 170                 .maxlen   = sizeof(int),
 171                 .mode     = 0644,
 172                 .proc_handler = &proc_dointvec
 173         },
 174         {
 175                 .ctl_name = 6,
 176                 .procname = "timeout",
 177                 .data     = &timeout,
 178                 .maxlen   = sizeof(int),
 179                 .mode     = 0644,
 180                 .proc_handler = &proc_dointvec
 181         },
 182         {
 183                 .ctl_name = 7,
 184                 .procname = "ntx",
 185                 .data     = &ntx,
 186                 .maxlen   = sizeof(int),
 187                 .mode     = 0444,
 188                 .proc_handler = &proc_dointvec
 189         },
 190         {
 191                 .ctl_name = 8,
 192                 .procname = "credits",
 193                 .data     = &credits,
 194                 .maxlen   = sizeof(int),
 195                 .mode     = 0444,
 196                 .proc_handler = &proc_dointvec
 197         },
 198         {
 199                 .ctl_name = 9,
 200                 .procname = "peer_credits",
 201                 .data     = &peer_credits,
 202                 .maxlen   = sizeof(int),
 203                 .mode     = 0444,
 204                 .proc_handler = &proc_dointvec
 205         },
 206         {
 207                 .ctl_name = 10,
 208                 .procname = "arp_retries",
 209                 .data     = &arp_retries,
 210                 .maxlen   = sizeof(int),
 211                 .mode     = 0644,
 212                 .proc_handler = &proc_dointvec
 213         },
 214         {
 215                 .ctl_name = 11,
 216                 .procname = "hca_basename",
 217                 .data     = hca_basename_space,
 218                 .maxlen   = sizeof(hca_basename_space),
 219                 .mode     = 0444,
 220                 .proc_handler = &proc_dostring
 221         },
 222         {
 223                 .ctl_name = 12,
 224                 .procname = "ipif_basename",
 225                 .data     = ipif_basename_space,
 226                 .maxlen   = sizeof(ipif_basename_space),
 227                 .mode     = 0444,
 228                 .proc_handler = &proc_dostring
 229         },
 230         {
 231                 .ctl_name = 13,
 232                 .procname = "local_ack_timeout",
 233                 .data     = &local_ack_timeout,
 234                 .maxlen   = sizeof(int),
 235                 .mode     = 0644,
 236                 .proc_handler = &proc_dointvec
 237         },
 238         {
 239                 .ctl_name = 14,
 240                 .procname = "retry_cnt",
 241                 .data     = &retry_cnt,
 242                 .maxlen   = sizeof(int),
 243                 .mode     = 0644,
 244                 .proc_handler = &proc_dointvec
 245         },
 246         {
 247                 .ctl_name = 15,
 248                 .procname = "rnr_cnt",
 249                 .data     = &rnr_cnt,
 250                 .maxlen   = sizeof(int),
 251                 .mode     = 0644,
 252                 .proc_handler = &proc_dointvec
 253         },
 254         {
 255                 .ctl_name = 16,
 256                 .procname = "rnr_nak_timer",
 257                 .data     = &rnr_nak_timer,
 258                 .maxlen   = sizeof(int),
 259                 .mode     = 0644,
 260                 .proc_handler = &proc_dointvec
 261         },
 262         {
 263                 .ctl_name = 17,
 264                 .procname = "keepalive",
 265                 .data     = &keepalive,
 266                 .maxlen   = sizeof(int),
 267                 .mode     = 0644,
 268                 .proc_handler = &proc_dointvec
 269         },
 270         {
 271                 .ctl_name = 18,
 272                 .procname = "concurrent_sends",
 273                 .data     = &concurrent_sends,
 274                 .maxlen   = sizeof(int),
 275                 .mode     = 0644,
 276                 .proc_handler = &proc_dointvec
 277         },
 278 #if IBNAL_USE_FMR
 279         {
 280                 .ctl_name = 19,
 281                 .procname = "fmr_remaps",
 282                 .data     = &fmr_remaps,
 283                 .maxlen   = sizeof(int),
 284                 .mode     = 0444,
 285                 .proc_handler = &proc_dointvec
 286         },
 287 #endif
 288         {0}
 289 };
 290
 291 static cfs_sysctl_table_t kibnal_top_ctl_table[] = {
 292         {
 293                 .ctl_name = 203,
 294                 .procname = "vibnal",
 295                 .data     = NULL,
 296                 .maxlen   = 0,
 297                 .mode     = 0555,
 298                 .child    = kibnal_ctl_table
 299         },
 300         {0}
 301 };
 302
 303 void
 304 kibnal_initstrtunable(char *space, char *str, int size)
 305 {
 306         strncpy(space, str, size);
 307         space[size-1] = 0;
 308 }
 309
 310 int
 311 kibnal_tunables_init ()
 312 {
 313         kibnal_initstrtunable(hca_basename_space, hca_basename,
 314                               sizeof(hca_basename_space));
 315         kibnal_initstrtunable(ipif_basename_space, ipif_basename,
 316                               sizeof(ipif_basename_space));
 317
 318         kibnal_tunables.kib_sysctl =
 319                 cfs_register_sysctl_table(kibnal_top_ctl_table, 0);
 320
 321         if (kibnal_tunables.kib_sysctl == NULL)
 322                 CWARN("Can't setup /proc tunables\n");
 323
 324         if (*kibnal_tunables.kib_concurrent_sends > IBNAL_RX_MSGS)
 325                 *kibnal_tunables.kib_concurrent_sends = IBNAL_RX_MSGS;
 326         if (*kibnal_tunables.kib_concurrent_sends < IBNAL_MSG_QUEUE_SIZE)
 327                 *kibnal_tunables.kib_concurrent_sends = IBNAL_MSG_QUEUE_SIZE;
 328
 329         return 0;
 330 }
 331
 332 void
 333 kibnal_tunables_fini ()
 334 {
 335         if (kibnal_tunables.kib_sysctl != NULL)
 336                 cfs_unregister_sysctl_table(kibnal_tunables.kib_sysctl);
 337 }
 338
 339 #else
 340
 341 int
 342 kibnal_tunables_init ()
 343 {
 344         return 0;
 345 }
 346
 347 void
 348 kibnal_tunables_fini ()
 349 {
 350 }
 351
 352 #endif