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