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  *  Copyright (c) 2003 Los Alamos National Laboratory (LANL)
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org/
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include "gmlnd.h"
  23
  24
  25 static int port = 4;
  26 CFS_MODULE_PARM(port, "i", int, 0444,
  27                 "GM port to use for communications");
  28
  29 static int ntx = 256;
  30 CFS_MODULE_PARM(ntx, "i", int, 0444,
  31                 "# tx descriptors");
  32
  33 static int credits = 128;
  34 CFS_MODULE_PARM(credits, "i", int, 0444,
  35                 "# concurrent sends");
  36
  37 static int peer_credits = 8;
  38 CFS_MODULE_PARM(peer_credits, "i", int, 0444,
  39                 "# concurrent sends per peer");
  40
  41 static int nlarge_tx_bufs = 32;
  42 CFS_MODULE_PARM(nlarge_tx_bufs, "i", int, 0444,
  43                 "# large tx message buffers");
  44
  45 static int nrx_small = 128;
  46 CFS_MODULE_PARM(nrx_small, "i", int, 0444,
  47                 "# small rx message buffers");
  48
  49 static int nrx_large = 64;
  50 CFS_MODULE_PARM(nrx_large, "i", int, 0444,
  51                 "# large rx message buffers");
  52
  53 gmnal_tunables_t gmnal_tunables = {
  54         .gm_port            = &port,
  55         .gm_ntx             = &ntx,
  56         .gm_credits         = &credits,
  57         .gm_peer_credits    = &peer_credits,
  58         .gm_nlarge_tx_bufs  = &nlarge_tx_bufs,
  59         .gm_nrx_small       = &nrx_small,
  60         .gm_nrx_large       = &nrx_large,
  61 };
  62
  63 #if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM
  64 static cfs_sysctl_table_t gmnal_ctl_table[] = {
  65         {
  66                 .ctl_name = 1,
  67                 .procname = "port",
  68                 .data     = &port,
  69                 .maxlen   = sizeof (int),
  70                 .data     = 0444,
  71                 .proc_handler = &proc_dointvec
  72         },
  73         {
  74                 .ctl_name = 2,
  75                 .procname = "ntx",
  76                 .data     = &ntx,
  77                 .maxlen   = sizeof (int),
  78                 .mode     = 0444,
  79                 .proc_handler = &proc_dointvec
  80         },
  81         {
  82                 .ctl_name = 3,
  83                 .procname = "credits",
  84                 .data     = &credits,
  85                 .maxlen   = sizeof (int),
  86                 .mode     = 0444,
  87                 .proc_handler = &proc_dointvec
  88         },
  89         {
  90                 .ctl_name = 4,
  91                 .procname = "peer_credits",
  92                 .data     = &peer_credits,
  93                 .maxlen   = sizeof (int),
  94                 .mode     = 0444,
  95                 .proc_handler = &proc_dointvec
  96         },
  97         {
  98                 .ctl_name = 5,
  99                 .procname = "nlarge_tx_bufs",
 100                 .data     = &nlarge_tx_bufs,
 101                 .maxlen   = sizeof (int),
 102                 .mode     = 0444,
 103                 .proc_handler = &proc_dointvec
 104         },
 105         {
 106                 .ctl_name = 6,
 107                 .procname = "nrx_small",
 108                 .data     = &nrx_small,
 109                 .maxlen   = sizeof (int),
 110                 .mode     = 0444,
 111                 .proc_handler = &proc_dointvec
 112         },
 113         {
 114                 .ctl_name = 7,
 115                 .procname = "nrx_large",
 116                 .data     = &nrx_large,
 117                 .maxlen   = sizeof (int),
 118                 .mode     = 0444,
 119                 .proc_handler = &proc_dointvec
 120         },
 121         {0}
 122 };
 123
 124 static cfs_sysctl_table_t gmnal_top_ctl_table[] = {
 125         {
 126                 .ctl_name = 207,
 127                 .procname = "gmnal",
 128                 .data     = NULL,
 129                 .maxlen   = 0,
 130                 .mode     = 0555,
 131                 .child    = gmnal_ctl_table
 132         },
 133         {0}
 134 };
 135 #endif
 136
 137 static int __init
 138 gmnal_load(void)
 139 {
 140         int     status;
 141         CDEBUG(D_TRACE, "This is the gmnal module initialisation routine\n");
 142
 143 #if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM
 144         gmnal_tunables.gm_sysctl =
 145                 cfs_register_sysctl_table(gmnal_top_ctl_table, 0);
 146
 147         if (gmnal_tunables.gm_sysctl == NULL)
 148                 CWARN("Can't setup /proc tunables\n");
 149 #endif
 150         CDEBUG(D_NET, "Calling gmnal_init\n");
 151         status = gmnal_init();
 152         if (status == 0) {
 153                 CDEBUG(D_NET, "Portals GMNAL initialised ok\n");
 154         } else {
 155                 CDEBUG(D_NET, "Portals GMNAL Failed to initialise\n");
 156                 return(-ENODEV);
 157         }
 158
 159         CDEBUG(D_NET, "This is the end of the gmnal init routine");
 160
 161         return(0);
 162 }
 163
 164 static void __exit
 165 gmnal_unload(void)
 166 {
 167         gmnal_fini();
 168 #if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM
 169         if (gmnal_tunables.gm_sysctl != NULL)
 170                 cfs_unregister_sysctl_table(gmnal_tunables.gm_sysctl);
 171 #endif
 172 }
 173
 174 module_init(gmnal_load);
 175 module_exit(gmnal_unload);
 176
 177 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
 178 MODULE_DESCRIPTION("Kernel GM LND v1.01");
 179 MODULE_LICENSE("GPL");