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  * Copyright (C) 2005 Cluster File Systems, Inc. All rights reserved.
   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 #include "gmlnd.h"
  24
  25
  26 static int port = 4;
  27 CFS_MODULE_PARM(port, "i", int, 0444,
  28                 "GM port to use for communications");
  29
  30 static int ntx = 256;
  31 CFS_MODULE_PARM(ntx, "i", int, 0444,
  32                 "# tx descriptors");
  33
  34 static int credits = 128;
  35 CFS_MODULE_PARM(credits, "i", int, 0444,
  36                 "# concurrent sends");
  37
  38 static int peer_credits = 8;
  39 CFS_MODULE_PARM(peer_credits, "i", int, 0444,
  40                 "# concurrent sends per peer");
  41
  42 static int nlarge_tx_bufs = 32;
  43 CFS_MODULE_PARM(nlarge_tx_bufs, "i", int, 0444,
  44                 "# large tx message buffers");
  45
  46 static int nrx_small = 128;
  47 CFS_MODULE_PARM(nrx_small, "i", int, 0444,
  48                 "# small rx message buffers");
  49
  50 static int nrx_large = 64;
  51 CFS_MODULE_PARM(nrx_large, "i", int, 0444,
  52                 "# large rx message buffers");
  53
  54 gmnal_tunables_t gmnal_tunables = {
  55         .gm_port            = &port,
  56         .gm_ntx             = &ntx,
  57         .gm_credits         = &credits,
  58         .gm_peer_credits    = &peer_credits,
  59         .gm_nlarge_tx_bufs  = &nlarge_tx_bufs,
  60         .gm_nrx_small       = &nrx_small,
  61         .gm_nrx_large       = &nrx_large,
  62 };
  63
  64 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
  65 static cfs_sysctl_table_t gmnal_ctl_table[] = {
  66         {
  67                 .ctl_name = 1,
  68                 .procname = "port",
  69                 .data     = &port,
  70                 .maxlen   = sizeof (int),
  71                 .data     = 0444,
  72                 .proc_handler = &proc_dointvec
  73         },
  74         {
  75                 .ctl_name = 2,
  76                 .procname = "ntx",
  77                 .data     = &ntx,
  78                 .maxlen   = sizeof (int),
  79                 .mode     = 0444,
  80                 .proc_handler = &proc_dointvec
  81         },
  82         {
  83                 .ctl_name = 3,
  84                 .procname = "credits",
  85                 .data     = &credits,
  86                 .maxlen   = sizeof (int),
  87                 .mode     = 0444,
  88                 .proc_handler = &proc_dointvec
  89         },
  90         {
  91                 .ctl_name = 4,
  92                 .procname = "peer_credits",
  93                 .data     = &peer_credits,
  94                 .maxlen   = sizeof (int),
  95                 .mode     = 0444,
  96                 .proc_handler = &proc_dointvec
  97         },
  98         {
  99                 .ctl_name = 5,
 100                 .procname = "nlarge_tx_bufs",
 101                 .data     = &nlarge_tx_bufs,
 102                 .maxlen   = sizeof (int),
 103                 .mode     = 0444,
 104                 .proc_handler = &proc_dointvec
 105         },
 106         {
 107                 .ctl_name = 6,
 108                 .procname = "nrx_small",
 109                 .data     = &nrx_small,
 110                 .maxlen   = sizeof (int),
 111                 .mode     = 0444,
 112                 .proc_handler = &proc_dointvec
 113         },
 114         {
 115                 .ctl_name = 7,
 116                 .procname = "nrx_large",
 117                 .data     = &nrx_large,
 118                 .maxlen   = sizeof (int),
 119                 .mode     = 0444,
 120                 .proc_handler = &proc_dointvec
 121         },
 122         {0}
 123 };
 124
 125 static cfs_sysctl_table_t gmnal_top_ctl_table[] = {
 126         {
 127                 .ctl_name = 207,
 128                 .procname = "gmnal",
 129                 .data     = NULL,
 130                 .maxlen   = 0,
 131                 .mode     = 0555,
 132                 .child    = gmnal_ctl_table
 133         },
 134         {0}
 135 };
 136 #endif
 137
 138 static int __init
 139 gmnal_load(void)
 140 {
 141         int     status;
 142         CDEBUG(D_TRACE, "This is the gmnal module initialisation routine\n");
 143
 144 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
 145         gmnal_tunables.gm_sysctl =
 146                 cfs_register_sysctl_table(gmnal_top_ctl_table, 0);
 147
 148         if (gmnal_tunables.gm_sysctl == NULL)
 149                 CWARN("Can't setup /proc tunables\n");
 150 #endif
 151         CDEBUG(D_NET, "Calling gmnal_init\n");
 152         status = gmnal_init();
 153         if (status == 0) {
 154                 CDEBUG(D_NET, "Portals GMNAL initialised ok\n");
 155         } else {
 156                 CDEBUG(D_NET, "Portals GMNAL Failed to initialise\n");
 157                 return(-ENODEV);
 158         }
 159
 160         CDEBUG(D_NET, "This is the end of the gmnal init routine");
 161
 162         return(0);
 163 }
 164
 165 static void __exit
 166 gmnal_unload(void)
 167 {
 168         gmnal_fini();
 169 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
 170         if (gmnal_tunables.gm_sysctl != NULL)
 171                 cfs_unregister_sysctl_table(gmnal_tunables.gm_sysctl);
 172 #endif
 173 }
 174
 175 module_init(gmnal_load);
 176 module_exit(gmnal_unload);
 177
 178 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
 179 MODULE_DESCRIPTION("Kernel GM LND v1.01");
 180 MODULE_LICENSE("GPL");