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 = sizeof(gmnal_msghdr_t) + sizeof(ptl_hdr_t) + PTL_MTU;
  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_PBUF(pcfg, 1), 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,
  60                                                        name, &nid);
  61                 GMNAL_GM_UNLOCK(nal_data);
  62                 if (gm_status != GM_SUCCESS) {
  63                         CDEBUG(D_INFO, "gm_host_name_to_node_id_ex(...host %s) "
  64                                "failed[%d]\n", name, gm_status);
  65                         return (-1);
  66                 } else
  67                         CDEBUG(D_INFO, "Local node %s id is [%d]\n", name, nid);
  68                 GMNAL_GM_LOCK(nal_data);
  69                 gm_status = gm_node_id_to_global_id(nal_data->gm_port,
  70                                                     nid, &gnid);
  71                 GMNAL_GM_UNLOCK(nal_data);
  72                 if (gm_status != GM_SUCCESS) {
  73                         CDEBUG(D_INFO, "gm_node_id_to_global_id failed[%d]\n",
  74                                gm_status);
  75                         return(-1);
  76                 }
  77                 CDEBUG(D_INFO, "Global node is is [%u][%x]\n", gnid, gnid);
  78                 copy_to_user(PCFG_PBUF(pcfg, 2), &gnid, pcfg->pcfg_plen2);
  79         break;
  80         default:
  81                 CDEBUG(D_INFO, "gmnal_cmd UNKNOWN[%d]\n", pcfg->pcfg_command);
  82                 pcfg->pcfg_nid2 = -1;
  83         }
  84
  85
  86         return(0);
  87 }
  88
  89
  90 static int __init
  91 gmnal_load(void)
  92 {
  93         int     status;
  94         CDEBUG(D_TRACE, "This is the gmnal module initialisation routine\n");
  95
  96
  97         CDEBUG(D_INFO, "Calling gmnal_init\n");
  98         status = gmnal_init();
  99         if (status == PTL_OK) {
 100                 CDEBUG(D_INFO, "Portals GMNAL initialised ok\n");
 101         } else {
 102                 CDEBUG(D_INFO, "Portals GMNAL Failed to initialise\n");
 103                 return(-ENODEV);
 104         }
 105
 106         CDEBUG(D_INFO, "This is the end of the gmnal init routine");
 107
 108         return(0);
 109 }
 110
 111
 112 static void __exit
 113 gmnal_unload(void)
 114 {
 115         gmnal_fini();
 116         return;
 117 }
 118
 119
 120 module_init(gmnal_load);
 121
 122 module_exit(gmnal_unload);
 123
 124 MODULE_PARM(gmnal_small_msg_size, "i");
 125 MODULE_PARM(num_rx_threads, "i");
 126 MODULE_PARM(num_stxds, "i");
 127 MODULE_PARM(gm_port_id, "i");
 128
 129 MODULE_AUTHOR("Morgan Doyle");
 130
 131 MODULE_DESCRIPTION("A Portals kernel NAL for Myrinet GM.");
 132
 133 MODULE_LICENSE("GPL");