lnet/klnds/gmlnd/gmlnd_module.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  *
  32  * Copyright (c) 2003 Los Alamos National Laboratory (LANL)
  33  */
  34 /*
  35  * This file is part of Lustre, http://www.lustre.org/
  36  * Lustre is a trademark of Sun Microsystems, Inc.
  37  */
  38
  39 #include "gmlnd.h"
  40
  41
  42 static int port = 4;
  43 CFS_MODULE_PARM(port, "i", int, 0444,
  44                 "GM port to use for communications");
  45
  46 static int ntx = 256;
  47 CFS_MODULE_PARM(ntx, "i", int, 0444,
  48                 "# tx descriptors");
  49
  50 static int credits = 128;
  51 CFS_MODULE_PARM(credits, "i", int, 0444,
  52                 "# concurrent sends");
  53
  54 static int peer_credits = 8;
  55 CFS_MODULE_PARM(peer_credits, "i", int, 0444,
  56                 "# concurrent sends per peer");
  57
  58 static int nlarge_tx_bufs = 32;
  59 CFS_MODULE_PARM(nlarge_tx_bufs, "i", int, 0444,
  60                 "# large tx message buffers");
  61
  62 static int nrx_small = 128;
  63 CFS_MODULE_PARM(nrx_small, "i", int, 0444,
  64                 "# small rx message buffers");
  65
  66 static int nrx_large = 64;
  67 CFS_MODULE_PARM(nrx_large, "i", int, 0444,
  68                 "# large rx message buffers");
  69
  70 gmnal_tunables_t gmnal_tunables = {
  71         .gm_port            = &port,
  72         .gm_ntx             = &ntx,
  73         .gm_credits         = &credits,
  74         .gm_peer_credits    = &peer_credits,
  75         .gm_nlarge_tx_bufs  = &nlarge_tx_bufs,
  76         .gm_nrx_small       = &nrx_small,
  77         .gm_nrx_large       = &nrx_large,
  78 };
  79
  80 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
  81
  82 #ifndef HAVE_SYSCTL_UNNUMBERED
  83
  84 enum {
  85         GMLND_PORT = 1,
  86         GMLND_NTX,
  87         GMLND_CREDITS,
  88         GMLND_PEERCREDITS,
  89         GMLND_NLARGE_TX_BUFS,
  90         GMLND_NRX_SMALL,
  91         GMLND_NRX_LARGE
  92 };
  93
  94 #else
  95
  96 #define GMLND_PORT              CTL_UNNUMBERED
  97 #define GMLND_NTX               CTL_UNNUMBERED
  98 #define GMLND_CREDITS           CTL_UNNUMBERED
  99 #define GMLND_PEERCREDITS       CTL_UNNUMBERED
 100 #define GMLND_NLARGE_TX_BUFS    CTL_UNNUMBERED
 101 #define GMLND_NRX_SMALL         CTL_UNNUMBERED
 102 #define GMLND_NRX_LARGE         CTL_UNNUMBERED
 103
 104 #endif
 105
 106 static cfs_sysctl_table_t gmnal_ctl_table[] = {
 107         {
 108                 .ctl_name = GMLND_PORT,
 109                 .procname = "port",
 110                 .data     = &port,
 111                 .maxlen   = sizeof (int),
 112                 .mode     = 0444,
 113                 .proc_handler = &proc_dointvec
 114         },
 115         {
 116                 .ctl_name = GMLND_NTX,
 117                 .procname = "ntx",
 118                 .data     = &ntx,
 119                 .maxlen   = sizeof (int),
 120                 .mode     = 0444,
 121                 .proc_handler = &proc_dointvec
 122         },
 123         {
 124                 .ctl_name = GMLND_CREDITS,
 125                 .procname = "credits",
 126                 .data     = &credits,
 127                 .maxlen   = sizeof (int),
 128                 .mode     = 0444,
 129                 .proc_handler = &proc_dointvec
 130         },
 131         {
 132                 .ctl_name = GMLND_PEERCREDITS,
 133                 .procname = "peer_credits",
 134                 .data     = &peer_credits,
 135                 .maxlen   = sizeof (int),
 136                 .mode     = 0444,
 137                 .proc_handler = &proc_dointvec
 138         },
 139         {
 140                 .ctl_name = GMLND_NLARGE_TX_BUFS,
 141                 .procname = "nlarge_tx_bufs",
 142                 .data     = &nlarge_tx_bufs,
 143                 .maxlen   = sizeof (int),
 144                 .mode     = 0444,
 145                 .proc_handler = &proc_dointvec
 146         },
 147         {
 148                 .ctl_name = GMLND_NRX_SMALL,
 149                 .procname = "nrx_small",
 150                 .data     = &nrx_small,
 151                 .maxlen   = sizeof (int),
 152                 .mode     = 0444,
 153                 .proc_handler = &proc_dointvec
 154         },
 155         {
 156                 .ctl_name = GMLND_NRX_LARGE,
 157                 .procname = "nrx_large",
 158                 .data     = &nrx_large,
 159                 .maxlen   = sizeof (int),
 160                 .mode     = 0444,
 161                 .proc_handler = &proc_dointvec
 162         },
 163         {0}
 164 };
 165
 166 static cfs_sysctl_table_t gmnal_top_ctl_table[] = {
 167         {
 168                 .ctl_name = CTL_GMLND,
 169                 .procname = "gmnal",
 170                 .data     = NULL,
 171                 .maxlen   = 0,
 172                 .mode     = 0555,
 173                 .child    = gmnal_ctl_table
 174         },
 175         {0}
 176 };
 177 #endif
 178
 179 static int __init
 180 gmnal_load(void)
 181 {
 182         int     status;
 183         CDEBUG(D_TRACE, "This is the gmnal module initialisation routine\n");
 184
 185 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
 186         gmnal_tunables.gm_sysctl =
 187                 cfs_register_sysctl_table(gmnal_top_ctl_table, 0);
 188
 189         if (gmnal_tunables.gm_sysctl == NULL)
 190                 CWARN("Can't setup /proc tunables\n");
 191 #endif
 192         CDEBUG(D_NET, "Calling gmnal_init\n");
 193         status = gmnal_init();
 194         if (status == 0) {
 195                 CDEBUG(D_NET, "Portals GMNAL initialised ok\n");
 196         } else {
 197                 CDEBUG(D_NET, "Portals GMNAL Failed to initialise\n");
 198                 return(-ENODEV);
 199         }
 200
 201         CDEBUG(D_NET, "This is the end of the gmnal init routine");
 202
 203         return(0);
 204 }
 205
 206 static void __exit
 207 gmnal_unload(void)
 208 {
 209         gmnal_fini();
 210 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
 211         if (gmnal_tunables.gm_sysctl != NULL)
 212                 cfs_unregister_sysctl_table(gmnal_tunables.gm_sysctl);
 213 #endif
 214 }
 215
 216 module_init(gmnal_load);
 217 module_exit(gmnal_unload);
 218
 219 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 220 MODULE_DESCRIPTION("Kernel GM LND v1.01");
 221 MODULE_LICENSE("GPL");