lustre/ptlrpc/rpc.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 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
  23 #define EXPORT_SYMTAB
  24 #define DEBUG_SUBSYSTEM S_RPC
  25
  26 #include <linux/module.h>
  27 #include <linux/obd_support.h>
  28 #include <linux/obd_class.h>
  29 #include <linux/lustre_lib.h>
  30 #include <linux/lustre_ha.h>
  31 #include <linux/init.h>
  32
  33 extern int ptlrpc_init_portals(void);
  34 extern void ptlrpc_exit_portals(void);
  35
  36 int connmgr_setup(struct obd_device *obddev, obd_count len, void *buf)
  37 {
  38         struct recovd_obd *recovd = &obddev->u.recovd;
  39         int err;
  40         ENTRY;
  41
  42         MOD_INC_USE_COUNT;
  43         memset(recovd, 0, sizeof(*recovd));
  44
  45         OBD_ALLOC(recovd->recovd_client, sizeof(*recovd->recovd_client));
  46         if (!recovd)
  47                 GOTO(err_dec, err = -ENOMEM);
  48
  49         err = recovd_setup(recovd);
  50         if (err)
  51                 GOTO(err_free, err);
  52
  53         recovd->recovd_service = ptlrpc_init_svc(16* 1024,
  54                                                  CONNMGR_REQUEST_PORTAL,
  55                                                  CONNMGR_REPLY_PORTAL,
  56                                                  "self", connmgr_handle,
  57                                                  "connmgr");
  58         if (!recovd->recovd_service) {
  59                 CERROR("failed to start service\n");
  60                 GOTO(err_recovd, err = -ENOMEM);
  61         }
  62
  63         ptlrpc_init_client(NULL, NULL, CONNMGR_REQUEST_PORTAL,
  64                            CONNMGR_REPLY_PORTAL, recovd->recovd_client);
  65         recovd->recovd_client->cli_name = "connmgr";
  66
  67         err = ptlrpc_start_thread(obddev, recovd->recovd_service,
  68                                   "lustre_connmgr");
  69         if (err) {
  70                 CERROR("cannot start thread\n");
  71                 GOTO(err_svc, err);
  72         }
  73
  74         ptlrpc_connmgr = recovd;
  75         RETURN(0);
  76
  77 err_svc:
  78         ptlrpc_unregister_service(recovd->recovd_service);
  79 err_recovd:
  80         recovd_cleanup(recovd);
  81 err_free:
  82         OBD_FREE(recovd->recovd_client, sizeof(*recovd->recovd_client));
  83 err_dec:
  84         MOD_DEC_USE_COUNT;
  85         RETURN(err);
  86 }
  87
  88 int connmgr_cleanup(struct obd_device *dev)
  89 {
  90         struct recovd_obd *recovd = &dev->u.recovd;
  91         int err;
  92
  93         err = recovd_cleanup(recovd);
  94         if (err)
  95                 LBUG();
  96
  97         ptlrpc_stop_all_threads(recovd->recovd_service);
  98         ptlrpc_unregister_service(recovd->recovd_service);
  99         ptlrpc_cleanup_client(recovd->recovd_client);
 100         OBD_FREE(recovd->recovd_client, sizeof(*recovd->recovd_client));
 101         MOD_DEC_USE_COUNT;
 102         RETURN(0);
 103 }
 104
 105
 106 int connmgr_iocontrol(long cmd, struct lustre_handle *conn, int len, void *karg,
 107                       void *uarg)
 108 {
 109         struct obd_device *obd = class_conn2obd(conn);
 110         struct recovd_obd *recovd = &obd->u.recovd;
 111
 112         ENTRY;
 113         if (cmd == OBD_IOC_RECOVD_NEWCONN) {
 114                 spin_lock(&recovd->recovd_lock);
 115                 recovd->recovd_flags |= RECOVD_UPCALL_ANSWER;
 116                 recovd->recovd_wakeup_flag = 1;
 117                 wake_up(&recovd->recovd_waitq);
 118                 spin_unlock(&recovd->recovd_lock);
 119                 EXIT;
 120         }
 121         return 0;
 122 }
 123
 124
 125 /* use obd ops to offer management infrastructure */
 126 static struct obd_ops recovd_obd_ops = {
 127         o_setup:       connmgr_setup,
 128         o_cleanup:     connmgr_cleanup,
 129         o_iocontrol:     connmgr_iocontrol,
 130 };
 131
 132 static int __init ptlrpc_init(void)
 133 {
 134         int rc;
 135         rc = ptlrpc_init_portals();
 136         if (rc)
 137                 RETURN(rc);
 138         ptlrpc_init_connection();
 139         class_register_type(&recovd_obd_ops, LUSTRE_HA_NAME);
 140         return 0;
 141 }
 142
 143 static void __exit ptlrpc_exit(void)
 144 {
 145         class_unregister_type(LUSTRE_HA_NAME);
 146         ptlrpc_exit_portals();
 147         ptlrpc_cleanup_connection();
 148 }
 149
 150 /* connmgr.c */
 151 EXPORT_SYMBOL(ptlrpc_connmgr);
 152 EXPORT_SYMBOL(connmgr_connect);
 153 EXPORT_SYMBOL(connmgr_handle);
 154 EXPORT_SYMBOL(recovd_cli_fail);
 155 EXPORT_SYMBOL(recovd_cli_manage);
 156 EXPORT_SYMBOL(recovd_cli_fixed);
 157 EXPORT_SYMBOL(recovd_setup);
 158 EXPORT_SYMBOL(recovd_cleanup);
 159
 160 /* connection.c */
 161 EXPORT_SYMBOL(ptlrpc_readdress_connection);
 162 EXPORT_SYMBOL(ptlrpc_get_connection);
 163 EXPORT_SYMBOL(ptlrpc_put_connection);
 164 EXPORT_SYMBOL(ptlrpc_connection_addref);
 165 EXPORT_SYMBOL(ptlrpc_init_connection);
 166 EXPORT_SYMBOL(ptlrpc_cleanup_connection);
 167
 168 /* niobuf.c */
 169 EXPORT_SYMBOL(ptlrpc_send_bulk);
 170 EXPORT_SYMBOL(ptlrpc_register_bulk);
 171 EXPORT_SYMBOL(ptlrpc_abort_bulk);
 172 EXPORT_SYMBOL(ptlrpc_reply);
 173 EXPORT_SYMBOL(ptlrpc_error);
 174 EXPORT_SYMBOL(ptlrpc_resend_req);
 175 EXPORT_SYMBOL(ptl_send_rpc);
 176 EXPORT_SYMBOL(ptlrpc_link_svc_me);
 177
 178 /* client.c */
 179 EXPORT_SYMBOL(ptlrpc_init_client);
 180 EXPORT_SYMBOL(ptlrpc_cleanup_client);
 181 EXPORT_SYMBOL(ptlrpc_req_to_uuid);
 182 EXPORT_SYMBOL(ptlrpc_uuid_to_connection);
 183 EXPORT_SYMBOL(ptlrpc_queue_wait);
 184 EXPORT_SYMBOL(ptlrpc_continue_req);
 185 EXPORT_SYMBOL(ptlrpc_replay_req);
 186 EXPORT_SYMBOL(ptlrpc_restart_req);
 187 EXPORT_SYMBOL(ptlrpc_prep_req);
 188 EXPORT_SYMBOL(ptlrpc_free_req);
 189 EXPORT_SYMBOL(ptlrpc_prep_req2);
 190 EXPORT_SYMBOL(ptlrpc_req_finished);
 191 EXPORT_SYMBOL(ptlrpc_prep_bulk);
 192 EXPORT_SYMBOL(ptlrpc_free_bulk);
 193 EXPORT_SYMBOL(ptlrpc_prep_bulk_page);
 194 EXPORT_SYMBOL(ptlrpc_free_bulk_page);
 195 EXPORT_SYMBOL(ptlrpc_check_status);
 196
 197 /* service.c */
 198 EXPORT_SYMBOL(ptlrpc_init_svc);
 199 EXPORT_SYMBOL(ptlrpc_stop_all_threads);
 200 EXPORT_SYMBOL(ptlrpc_start_thread);
 201 EXPORT_SYMBOL(ptlrpc_unregister_service);
 202
 203 /* pack_generic.c */
 204 EXPORT_SYMBOL(lustre_pack_msg);
 205 EXPORT_SYMBOL(lustre_msg_size);
 206 EXPORT_SYMBOL(lustre_unpack_msg);
 207 EXPORT_SYMBOL(lustre_msg_buf);
 208
 209 MODULE_AUTHOR("Cluster File Systems, Inc <info@clusterfs.com>");
 210 MODULE_DESCRIPTION("Lustre Request Processor v1.0");
 211 MODULE_LICENSE("GPL");
 212
 213 module_init(ptlrpc_init);
 214 module_exit(ptlrpc_exit);