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         err = recovd_setup(recovd);
  46         if (err) {
  47                 MOD_DEC_USE_COUNT;
  48                 RETURN(err);
  49         }
  50
  51         RETURN(0);
  52 }
  53
  54 int connmgr_cleanup(struct obd_device *dev)
  55 {
  56         struct recovd_obd *recovd = &dev->u.recovd;
  57         int err;
  58
  59         err = recovd_cleanup(recovd);
  60         if (err)
  61                 LBUG();
  62
  63         MOD_DEC_USE_COUNT;
  64         RETURN(0);
  65 }
  66
  67
  68 int connmgr_iocontrol(long cmd, struct lustre_handle *conn, int len, void *karg,
  69                       void *uarg)
  70 {
  71         struct obd_device *obd = class_conn2obd(conn);
  72         struct recovd_obd *recovd = &obd->u.recovd;
  73
  74         ENTRY;
  75         if (cmd == OBD_IOC_RECOVD_NEWCONN) {
  76                 spin_lock(&recovd->recovd_lock);
  77                 recovd->recovd_flags |= RECOVD_UPCALL_ANSWER;
  78                 recovd->recovd_wakeup_flag = 1;
  79                 wake_up(&recovd->recovd_waitq);
  80                 spin_unlock(&recovd->recovd_lock);
  81                 EXIT;
  82         }
  83         return 0;
  84 }
  85
  86
  87 /* use obd ops to offer management infrastructure */
  88 static struct obd_ops recovd_obd_ops = {
  89         o_setup:       connmgr_setup,
  90         o_cleanup:     connmgr_cleanup,
  91         o_iocontrol:   connmgr_iocontrol,
  92 };
  93
  94 static int __init ptlrpc_init(void)
  95 {
  96         int rc;
  97         rc = ptlrpc_init_portals();
  98         if (rc)
  99                 RETURN(rc);
 100         ptlrpc_init_connection();
 101         class_register_type(&recovd_obd_ops, LUSTRE_HA_NAME);
 102         return 0;
 103 }
 104
 105 static void __exit ptlrpc_exit(void)
 106 {
 107         class_unregister_type(LUSTRE_HA_NAME);
 108         ptlrpc_exit_portals();
 109         ptlrpc_cleanup_connection();
 110 }
 111
 112 /* connmgr.c */
 113 EXPORT_SYMBOL(recovd_conn_fail);
 114 EXPORT_SYMBOL(recovd_conn_manage);
 115 EXPORT_SYMBOL(recovd_conn_fixed);
 116 EXPORT_SYMBOL(recovd_setup);
 117 EXPORT_SYMBOL(recovd_cleanup);
 118
 119 /* connection.c */
 120 EXPORT_SYMBOL(ptlrpc_readdress_connection);
 121 EXPORT_SYMBOL(ptlrpc_get_connection);
 122 EXPORT_SYMBOL(ptlrpc_put_connection);
 123 EXPORT_SYMBOL(ptlrpc_connection_addref);
 124 EXPORT_SYMBOL(ptlrpc_init_connection);
 125 EXPORT_SYMBOL(ptlrpc_cleanup_connection);
 126
 127 /* niobuf.c */
 128 EXPORT_SYMBOL(ptlrpc_send_bulk);
 129 EXPORT_SYMBOL(ptlrpc_register_bulk);
 130 EXPORT_SYMBOL(ptlrpc_abort_bulk);
 131 EXPORT_SYMBOL(ptlrpc_reply);
 132 EXPORT_SYMBOL(ptlrpc_error);
 133 EXPORT_SYMBOL(ptlrpc_resend_req);
 134 EXPORT_SYMBOL(ptl_send_rpc);
 135 EXPORT_SYMBOL(ptlrpc_link_svc_me);
 136
 137 /* client.c */
 138 EXPORT_SYMBOL(ptlrpc_init_client);
 139 EXPORT_SYMBOL(ptlrpc_cleanup_client);
 140 EXPORT_SYMBOL(ptlrpc_req_to_uuid);
 141 EXPORT_SYMBOL(ptlrpc_uuid_to_connection);
 142 EXPORT_SYMBOL(ptlrpc_queue_wait);
 143 EXPORT_SYMBOL(ptlrpc_continue_req);
 144 EXPORT_SYMBOL(ptlrpc_replay_req);
 145 EXPORT_SYMBOL(ptlrpc_restart_req);
 146 EXPORT_SYMBOL(ptlrpc_prep_req);
 147 EXPORT_SYMBOL(ptlrpc_free_req);
 148 EXPORT_SYMBOL(ptlrpc_prep_req2);
 149 EXPORT_SYMBOL(ptlrpc_req_finished);
 150 EXPORT_SYMBOL(ptlrpc_prep_bulk);
 151 EXPORT_SYMBOL(ptlrpc_free_bulk);
 152 EXPORT_SYMBOL(ptlrpc_prep_bulk_page);
 153 EXPORT_SYMBOL(ptlrpc_free_bulk_page);
 154 EXPORT_SYMBOL(ptlrpc_check_status);
 155
 156 /* service.c */
 157 EXPORT_SYMBOL(ptlrpc_init_svc);
 158 EXPORT_SYMBOL(ptlrpc_stop_all_threads);
 159 EXPORT_SYMBOL(ptlrpc_start_thread);
 160 EXPORT_SYMBOL(ptlrpc_unregister_service);
 161
 162 /* pack_generic.c */
 163 EXPORT_SYMBOL(lustre_pack_msg);
 164 EXPORT_SYMBOL(lustre_msg_size);
 165 EXPORT_SYMBOL(lustre_unpack_msg);
 166 EXPORT_SYMBOL(lustre_msg_buf);
 167
 168 MODULE_AUTHOR("Cluster File Systems, Inc <info@clusterfs.com>");
 169 MODULE_DESCRIPTION("Lustre Request Processor v1.0");
 170 MODULE_LICENSE("GPL");
 171
 172 module_init(ptlrpc_init);
 173 module_exit(ptlrpc_exit);