lustre/ptlrpc/ptlrpc_module.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (c) 2002, 2003 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 #ifdef __KERNEL__
  27 # include <linux/module.h>
  28 # include <linux/init.h>
  29 #else
  30 # include <liblustre.h>
  31 #endif
  32
  33 #include <linux/obd_support.h>
  34 #include <linux/obd_class.h>
  35 #include <linux/lustre_net.h>
  36
  37 #include "ptlrpc_internal.h"
  38
  39 extern int ptlrpc_init_portals(void);
  40 extern void ptlrpc_exit_portals(void);
  41 static int ldlm_hooks_referenced = 0;
  42
  43 int (*ptlrpc_ldlm_namespace_cleanup)(struct ldlm_namespace *, int);
  44 int (*ptlrpc_ldlm_replay_locks)(struct obd_import *);
  45
  46 #define GET_HOOK(name)                                                         \
  47 if (!ptlrpc_##name) {                                                          \
  48         if (!(ptlrpc_##name = inter_module_get(#name))) {                      \
  49                 CERROR("can't i_m_g(\"" #name "\")\n");                        \
  50                 return 0;                                                      \
  51         }                                                                      \
  52 }
  53
  54 static int ldlm_hooks_referenced;
  55
  56 /* This is called from ptlrpc_get_connection, which runs after all the modules
  57  * are loaded, but before anything else interesting happens.
  58  */
  59 int ptlrpc_get_ldlm_hooks(void)
  60 {
  61         if (ldlm_hooks_referenced)
  62                 return 1;
  63
  64         GET_HOOK(ldlm_namespace_cleanup);
  65         GET_HOOK(ldlm_replay_locks);
  66
  67         ldlm_hooks_referenced = 1;
  68         RETURN(1);
  69 }
  70
  71 #undef GET_HOOK
  72
  73 #define PUT_HOOK(hook)                                                         \
  74 if (ptlrpc_##hook) {                                                           \
  75         inter_module_put(#hook);                                               \
  76         ptlrpc_##hook = NULL;                                                  \
  77 }
  78
  79 void ptlrpc_put_ldlm_hooks(void)
  80 {
  81         ENTRY;
  82         if (!ldlm_hooks_referenced)
  83                 return;
  84
  85         PUT_HOOK(ldlm_namespace_cleanup);
  86         PUT_HOOK(ldlm_replay_locks);
  87         ldlm_hooks_referenced = 0;
  88         EXIT;
  89 }
  90
  91 #undef PUT_HOOK
  92
  93 int ptlrpc_ldlm_hooks_referenced(void)
  94 {
  95         return ldlm_hooks_referenced;
  96 }
  97
  98 __init int ptlrpc_init(void)
  99 {
 100         int rc;
 101         ENTRY;
 102
 103         lustre_assert_wire_constants ();
 104
 105         rc = ptlrpc_init_portals();
 106         if (rc)
 107                 RETURN(rc);
 108
 109         ptlrpc_init_connection();
 110
 111         ptlrpc_put_connection_superhack = ptlrpc_put_connection;
 112         ptlrpc_abort_inflight_superhack = ptlrpc_abort_inflight;
 113         RETURN(0);
 114 }
 115
 116 static void __exit ptlrpc_exit(void)
 117 {
 118         ptlrpc_exit_portals();
 119         ptlrpc_cleanup_connection();
 120 }
 121
 122 /* connection.c */
 123 EXPORT_SYMBOL(ptlrpc_dump_connections);
 124 EXPORT_SYMBOL(ptlrpc_readdress_connection);
 125 EXPORT_SYMBOL(ptlrpc_get_connection);
 126 EXPORT_SYMBOL(ptlrpc_put_connection);
 127 EXPORT_SYMBOL(ptlrpc_connection_addref);
 128 EXPORT_SYMBOL(ptlrpc_init_connection);
 129 EXPORT_SYMBOL(ptlrpc_cleanup_connection);
 130
 131 /* niobuf.c */
 132 EXPORT_SYMBOL(ptlrpc_bulk_put);
 133 EXPORT_SYMBOL(ptlrpc_bulk_get);
 134 EXPORT_SYMBOL(ptlrpc_abort_bulk);
 135 EXPORT_SYMBOL(ptlrpc_register_bulk);
 136 EXPORT_SYMBOL(ptlrpc_unregister_bulk);
 137 EXPORT_SYMBOL(ptlrpc_reply);
 138 EXPORT_SYMBOL(ptlrpc_error);
 139 EXPORT_SYMBOL(ptlrpc_resend_req);
 140 EXPORT_SYMBOL(ptl_send_rpc);
 141 EXPORT_SYMBOL(ptlrpc_link_svc_me);
 142
 143 /* client.c */
 144 EXPORT_SYMBOL(ptlrpc_init_client);
 145 EXPORT_SYMBOL(ptlrpc_cleanup_client);
 146 EXPORT_SYMBOL(ptlrpc_req_to_uuid);
 147 EXPORT_SYMBOL(ptlrpc_uuid_to_connection);
 148 EXPORT_SYMBOL(ptlrpc_queue_wait);
 149 EXPORT_SYMBOL(ptlrpc_replay_req);
 150 EXPORT_SYMBOL(ptlrpc_restart_req);
 151 EXPORT_SYMBOL(ptlrpc_prep_req);
 152 EXPORT_SYMBOL(ptlrpc_free_req);
 153 EXPORT_SYMBOL(ptlrpc_unregister_reply);
 154 EXPORT_SYMBOL(ptlrpc_req_finished);
 155 EXPORT_SYMBOL(ptlrpc_request_addref);
 156 EXPORT_SYMBOL(ptlrpc_prep_bulk_imp);
 157 EXPORT_SYMBOL(ptlrpc_prep_bulk_exp);
 158 EXPORT_SYMBOL(ptlrpc_free_bulk);
 159 EXPORT_SYMBOL(ptlrpc_prep_bulk_page);
 160 EXPORT_SYMBOL(ptlrpc_free_bulk_page);
 161 EXPORT_SYMBOL(ptlrpc_abort_inflight);
 162 EXPORT_SYMBOL(ptlrpc_retain_replayable_request);
 163 EXPORT_SYMBOL(ptlrpc_next_xid);
 164
 165 EXPORT_SYMBOL(ptlrpc_prep_set);
 166 EXPORT_SYMBOL(ptlrpc_set_add_req);
 167 EXPORT_SYMBOL(ptlrpc_set_destroy);
 168 EXPORT_SYMBOL(ptlrpc_set_wait);
 169
 170 /* service.c */
 171 EXPORT_SYMBOL(ptlrpc_init_svc);
 172 EXPORT_SYMBOL(ptlrpc_stop_all_threads);
 173 EXPORT_SYMBOL(ptlrpc_start_thread);
 174 EXPORT_SYMBOL(ptlrpc_unregister_service);
 175
 176 /* pack_generic.c */
 177 EXPORT_SYMBOL(lustre_pack_msg);
 178 EXPORT_SYMBOL(lustre_msg_size);
 179 EXPORT_SYMBOL(lustre_unpack_msg);
 180 EXPORT_SYMBOL(lustre_msg_buf);
 181 EXPORT_SYMBOL(lustre_msg_string);
 182 EXPORT_SYMBOL(lustre_swab_reqbuf);
 183 EXPORT_SYMBOL(lustre_swab_repbuf);
 184 EXPORT_SYMBOL(lustre_swab_obdo);
 185 EXPORT_SYMBOL(lustre_swab_obd_statfs);
 186 EXPORT_SYMBOL(lustre_swab_obd_ioobj);
 187 EXPORT_SYMBOL(lustre_swab_niobuf_remote);
 188 EXPORT_SYMBOL(lustre_swab_ost_body);
 189 EXPORT_SYMBOL(lustre_swab_ll_fid);
 190 EXPORT_SYMBOL(lustre_swab_mds_status_req);
 191 EXPORT_SYMBOL(lustre_swab_mds_fileh_body);
 192 EXPORT_SYMBOL(lustre_swab_mds_body);
 193 EXPORT_SYMBOL(lustre_swab_mds_rec_setattr);
 194 EXPORT_SYMBOL(lustre_swab_mds_rec_create);
 195 EXPORT_SYMBOL(lustre_swab_mds_rec_link);
 196 EXPORT_SYMBOL(lustre_swab_mds_rec_unlink);
 197 EXPORT_SYMBOL(lustre_swab_mds_rec_rename);
 198 EXPORT_SYMBOL(lustre_swab_lov_desc);
 199 EXPORT_SYMBOL(lustre_swab_ldlm_res_id);
 200 EXPORT_SYMBOL(lustre_swab_ldlm_extent);
 201 EXPORT_SYMBOL(lustre_swab_ldlm_intent);
 202 EXPORT_SYMBOL(lustre_swab_ldlm_resource_desc);
 203 EXPORT_SYMBOL(lustre_swab_ldlm_lock_desc);
 204 EXPORT_SYMBOL(lustre_swab_ldlm_request);
 205 EXPORT_SYMBOL(lustre_swab_ldlm_reply);
 206 EXPORT_SYMBOL(lustre_swab_ptlbd_op);
 207 EXPORT_SYMBOL(lustre_swab_ptlbd_niob);
 208 EXPORT_SYMBOL(lustre_swab_ptlbd_rsp);
 209
 210 /* ptlrpc_module.c */
 211 EXPORT_SYMBOL(ptlrpc_put_ldlm_hooks);
 212 EXPORT_SYMBOL(ptlrpc_ldlm_hooks_referenced);
 213
 214 /* recover.c */
 215 EXPORT_SYMBOL(ptlrpc_run_recovery_over_upcall);
 216 EXPORT_SYMBOL(ptlrpc_run_failed_import_upcall);
 217 EXPORT_SYMBOL(ptlrpc_reconnect_import);
 218 EXPORT_SYMBOL(ptlrpc_replay);
 219 EXPORT_SYMBOL(ptlrpc_resend);
 220 EXPORT_SYMBOL(ptlrpc_wake_delayed);
 221 EXPORT_SYMBOL(ptlrpc_set_import_active);
 222 EXPORT_SYMBOL(ptlrpc_fail_import);
 223 EXPORT_SYMBOL(ptlrpc_fail_export);
 224 EXPORT_SYMBOL(ptlrpc_recover_import);
 225
 226 /*ptlrpc_lib.c*/
 227 EXPORT_SYMBOL(client_obd_setup);
 228 EXPORT_SYMBOL(client_obd_cleanup);
 229
 230 /* pinger.c */
 231 EXPORT_SYMBOL(ptlrpc_pinger_add_import);
 232 EXPORT_SYMBOL(ptlrpc_pinger_del_import);
 233 EXPORT_SYMBOL(ptlrpc_pinger_sending_on_import);
 234
 235 #ifdef __KERNEL__
 236 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
 237 MODULE_DESCRIPTION("Lustre Request Processor");
 238 MODULE_LICENSE("GPL");
 239
 240 module_init(ptlrpc_init);
 241 module_exit(ptlrpc_exit);
 242 #endif