lnet/lnet/module.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
   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 #ifndef EXPORT_SYMTAB
  23 # define EXPORT_SYMTAB
  24 #endif
  25 #define DEBUG_SUBSYSTEM S_PORTALS
  26
  27 #include <portals/lib-p30.h>
  28 #include <portals/p30.h>
  29 #include <portals/nal.h>
  30 #include <libcfs/kp30.h>
  31 #include <portals/kpr.h>
  32
  33 extern void (kping_client)(struct portal_ioctl_data *);
  34
  35 static int kportal_ioctl(struct portal_ioctl_data *data,
  36                          unsigned int cmd, unsigned long arg)
  37 {
  38         int err;
  39         char str[PTL_NALFMT_SIZE];
  40         ENTRY;
  41
  42         switch (cmd) {
  43         case IOC_PORTAL_PING: {
  44                 void (*ping)(struct portal_ioctl_data *);
  45
  46                 CDEBUG(D_IOCTL, "doing %d pings to nid "LPX64" (%s)\n",
  47                        data->ioc_count, data->ioc_nid,
  48                        portals_nid2str(data->ioc_nal, data->ioc_nid, str));
  49                 ping = PORTAL_SYMBOL_GET(kping_client);
  50                 if (!ping)
  51                         CERROR("PORTAL_SYMBOL_GET failed\n");
  52                 else {
  53                         ping(data);
  54                         PORTAL_SYMBOL_PUT(kping_client);
  55                 }
  56                 RETURN(0);
  57         }
  58
  59         case IOC_PORTAL_GET_NID: {
  60                 ptl_handle_ni_t    nih;
  61                 ptl_process_id_t   pid;
  62
  63                 CDEBUG (D_IOCTL, "Getting nid for nal [%x]\n", data->ioc_nal);
  64
  65                 err = PtlNIInit(data->ioc_nal, LUSTRE_SRV_PTL_PID, NULL,
  66                                 NULL, &nih);
  67                 if (!(err == PTL_OK || err == PTL_IFACE_DUP))
  68                         RETURN (-EINVAL);
  69
  70                 err = PtlGetId (nih, &pid);
  71                 LASSERT (err == PTL_OK);
  72
  73                 PtlNIFini(nih);
  74
  75                 data->ioc_nid = pid.nid;
  76                 if (copy_to_user ((char *)arg, data, sizeof (*data)))
  77                         RETURN (-EFAULT);
  78                 RETURN(0);
  79         }
  80
  81         case IOC_PORTAL_FAIL_NID: {
  82                 ptl_handle_ni_t    nih;
  83
  84                 CDEBUG (D_IOCTL, "fail nid: [%d] "LPU64" count %d\n",
  85                         data->ioc_nal, data->ioc_nid, data->ioc_count);
  86
  87                 err = PtlNIInit(data->ioc_nal, LUSTRE_SRV_PTL_PID, NULL,
  88                                 NULL, &nih);
  89                 if (!(err == PTL_OK || err == PTL_IFACE_DUP))
  90                         return (-EINVAL);
  91
  92                 if (err == PTL_OK) {
  93                         /* There's no point in failing an interface that
  94                          * came into existance just for this */
  95                         err = -EINVAL;
  96                 } else {
  97                         err = PtlFailNid (nih, data->ioc_nid, data->ioc_count);
  98                         if (err != PTL_OK)
  99                                 err = -EINVAL;
 100                 }
 101
 102                 PtlNIFini(nih);
 103                 RETURN (err);
 104         }
 105         default:
 106                 RETURN(-EINVAL);
 107         }
 108         /* Not Reached */
 109 }
 110
 111 DECLARE_IOCTL_HANDLER(kportal_ioctl_handler, kportal_ioctl);
 112 extern struct semaphore ptl_mutex;
 113
 114 static int init_kportals_module(void)
 115 {
 116         int rc;
 117         ENTRY;
 118
 119         init_mutex(&ptl_mutex);
 120         rc = PtlInit(NULL);
 121         if (rc) {
 122                 CERROR("PtlInit: error %d\n", rc);
 123                 RETURN(rc);
 124         }
 125
 126         rc = libcfs_register_ioctl(&kportal_ioctl_handler);
 127         LASSERT (rc == 0);
 128
 129         RETURN(rc);
 130 }
 131
 132 static void exit_kportals_module(void)
 133 {
 134         int rc;
 135
 136         rc = libcfs_deregister_ioctl(&kportal_ioctl_handler);
 137         LASSERT (rc == 0);
 138
 139         PtlFini();
 140 }
 141
 142 EXPORT_SYMBOL(ptl_register_nal);
 143 EXPORT_SYMBOL(ptl_unregister_nal);
 144
 145 EXPORT_SYMBOL(ptl_err_str);
 146 EXPORT_SYMBOL(PtlMEAttach);
 147 EXPORT_SYMBOL(PtlMEInsert);
 148 EXPORT_SYMBOL(PtlMEUnlink);
 149 EXPORT_SYMBOL(PtlEQAlloc);
 150 EXPORT_SYMBOL(PtlMDAttach);
 151 EXPORT_SYMBOL(PtlMDUnlink);
 152 EXPORT_SYMBOL(PtlNIInit);
 153 EXPORT_SYMBOL(PtlNIFini);
 154 EXPORT_SYMBOL(PtlInit);
 155 EXPORT_SYMBOL(PtlFini);
 156 EXPORT_SYMBOL(PtlSnprintHandle);
 157 EXPORT_SYMBOL(PtlPut);
 158 EXPORT_SYMBOL(PtlGet);
 159 EXPORT_SYMBOL(PtlEQWait);
 160 EXPORT_SYMBOL(PtlEQFree);
 161 EXPORT_SYMBOL(PtlEQGet);
 162 EXPORT_SYMBOL(PtlGetId);
 163 EXPORT_SYMBOL(PtlMDBind);
 164 EXPORT_SYMBOL(lib_iov_nob);
 165 EXPORT_SYMBOL(lib_copy_iov2buf);
 166 EXPORT_SYMBOL(lib_copy_buf2iov);
 167 EXPORT_SYMBOL(lib_extract_iov);
 168 EXPORT_SYMBOL(lib_kiov_nob);
 169 EXPORT_SYMBOL(lib_copy_kiov2buf);
 170 EXPORT_SYMBOL(lib_copy_buf2kiov);
 171 EXPORT_SYMBOL(lib_extract_kiov);
 172 EXPORT_SYMBOL(lib_finalize);
 173 EXPORT_SYMBOL(lib_parse);
 174 EXPORT_SYMBOL(lib_create_reply_msg);
 175 EXPORT_SYMBOL(lib_init);
 176 EXPORT_SYMBOL(lib_fini);
 177
 178 MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
 179 MODULE_DESCRIPTION("Portals v3.1");
 180 MODULE_LICENSE("GPL");
 181
 182 cfs_module(portals, "1.0.0", init_kportals_module, exit_kportals_module);