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 "gmnal.h"
  23
  24
  25 int gmnal_small_msg_size = 525312;
  26 /*
  27  *      -1 indicates default value.
  28  *      This is 1 thread per cpu
  29  *      See start_kernel_threads
  30  */
  31 int num_rx_threads = -1;
  32 int num_stxds = 5;
  33 int gm_port_id = 4;
  34
  35 int
  36 gmnal_cmd(struct portals_cfg *pcfg, void *private)
  37 {
  38         gmnal_data_t    *nal_data = NULL;
  39         char            *name = NULL;
  40         int             nid = -2;
  41         int             gnid;
  42         gm_status_t     gm_status;
  43
  44
  45         CDEBUG(D_TRACE, "gmnal_cmd [%d] private [%p]\n",
  46                pcfg->pcfg_command, private);
  47         nal_data = (gmnal_data_t*)private;
  48         switch(pcfg->pcfg_command) {
  49         /*
  50          * just reuse already defined GET_NID. Should define GMNAL version
  51          */
  52         case(GMNAL_IOC_GET_GNID):
  53
  54                 PORTAL_ALLOC(name, pcfg->pcfg_plen1);
  55                 copy_from_user(name, pcfg->pcfg_pbuf1, pcfg->pcfg_plen1);
  56
  57                 GMNAL_GM_LOCK(nal_data);
  58                 //nid = gm_host_name_to_node_id(nal_data->gm_port, name);
  59                 gm_status = gm_host_name_to_node_id_ex (nal_data->gm_port, 0, name, &nid);
  60                 GMNAL_GM_UNLOCK(nal_data);
  61                 if (gm_status != GM_SUCCESS) {
  62                         CDEBUG(D_INFO, "gm_host_name_to_node_id_ex(...host %s) failed[%d]\n",
  63                                 name, gm_status);
  64                         return (-1);
  65                 } else
  66                         CDEBUG(D_INFO, "Local node %s id is [%d]\n", name, nid);
  67                 GMNAL_GM_LOCK(nal_data);
  68                 gm_status = gm_node_id_to_global_id(nal_data->gm_port,
  69                                                     nid, &gnid);
  70                 GMNAL_GM_UNLOCK(nal_data);
  71                 if (gm_status != GM_SUCCESS) {
  72                         CDEBUG(D_INFO, "gm_node_id_to_global_id failed[%d]\n",
  73                                gm_status);
  74                         return(-1);
  75                 }
  76                 CDEBUG(D_INFO, "Global node is is [%u][%x]\n", gnid, gnid);
  77                 copy_to_user(pcfg->pcfg_pbuf2, &gnid, pcfg->pcfg_plen2);
  78         break;
  79         default:
  80                 CDEBUG(D_INFO, "gmnal_cmd UNKNOWN[%d]\n", pcfg->pcfg_command);
  81                 pcfg->pcfg_nid2 = -1;
  82         }
  83
  84
  85         return(0);
  86 }
  87
  88
  89 static int __init
  90 gmnal_load(void)
  91 {
  92         int     status;
  93         CDEBUG(D_TRACE, "This is the gmnal module initialisation routine\n");
  94
  95
  96         CDEBUG(D_INFO, "Calling gmnal_init\n");
  97         status = gmnal_init();
  98         if (status == PTL_OK) {
  99                 CDEBUG(D_INFO, "Portals GMNAL initialised ok\n");
 100         } else {
 101                 CDEBUG(D_INFO, "Portals GMNAL Failed to initialise\n");
 102                 return(-ENODEV);
 103
 104         }
 105
 106         CDEBUG(D_INFO, "This is the end of the gmnal init routine");
 107
 108
 109         return(0);
 110 }
 111
 112
 113 static void __exit
 114 gmnal_unload(void)
 115 {
 116         gmnal_fini();
 117         return;
 118 }
 119
 120
 121 module_init(gmnal_load);
 122
 123 module_exit(gmnal_unload);
 124
 125 MODULE_PARM(gmnal_small_msg_size, "i");
 126 MODULE_PARM(num_rx_threads, "i");
 127 MODULE_PARM(num_stxds, "i");
 128 MODULE_PARM(gm_port_id, "i");
 129
 130 MODULE_AUTHOR("Morgan Doyle");
 131
 132 MODULE_DESCRIPTION("A Portals kernel NAL for Myrinet GM.");
 133
 134 MODULE_LICENSE("GPL");