lustre/ptlrpc/ptlrpc_internal.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of the Lustre file system, http://www.lustre.org
   7  *   Lustre is a trademark of Cluster File Systems, Inc.
   8  *
   9  *   You may have signed or agreed to another license before downloading
  10  *   this software.  If so, you are bound by the terms and conditions
  11  *   of that agreement, and the following does not apply to you.  See the
  12  *   LICENSE file included with this distribution for more information.
  13  *
  14  *   If you did not agree to a different license, then this copy of Lustre
  15  *   is open source software; you can redistribute it and/or modify it
  16  *   under the terms of version 2 of the GNU General Public License as
  17  *   published by the Free Software Foundation.
  18  *
  19  *   In either case, Lustre is distributed in the hope that it will be
  20  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  21  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *   license text for more details.
  23  *
  24  */
  25
  26 /* Intramodule declarations for ptlrpc. */
  27
  28 #ifndef PTLRPC_INTERNAL_H
  29 #define PTLRPC_INTERNAL_H
  30
  31 #include "../ldlm/ldlm_internal.h"
  32
  33 struct ldlm_namespace;
  34 struct obd_import;
  35 struct ldlm_res_id;
  36 struct ptlrpc_request_set;
  37
  38 void ptlrpc_request_handle_notconn(struct ptlrpc_request *);
  39 void lustre_assert_wire_constants(void);
  40 int ptlrpc_import_in_recovery(struct obd_import *imp);
  41 int ptlrpc_set_import_discon(struct obd_import *imp, __u32 conn_cnt);
  42 void ptlrpc_handle_failed_import(struct obd_import *imp);
  43 int ptlrpc_replay_next(struct obd_import *imp, int *inflight);
  44 void ptlrpc_initiate_recovery(struct obd_import *imp);
  45
  46
  47 #ifdef LPROCFS
  48 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *proc_entry,
  49                                      struct ptlrpc_service *svc);
  50 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc);
  51 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req);
  52 void ptlrpc_lprocfs_do_request_stat (struct ptlrpc_request *req,
  53                                      long q_usec, long work_usec);
  54 #else
  55 #define ptlrpc_lprocfs_register_service(params...) do{}while(0)
  56 #define ptlrpc_lprocfs_unregister_service(params...) do{}while(0)
  57 #define ptlrpc_lprocfs_rpc_sent(params...) do{}while(0)
  58 #define ptlrpc_lprocfs_do_request_stat(params...) do{}while(0)
  59 #endif /* LPROCFS */
  60
  61 /* recovd_thread.c */
  62 int llog_init_commit_master(void);
  63 int llog_cleanup_commit_master(int force);
  64
  65 static inline int opcode_offset(__u32 opc) {
  66         if (opc < OST_LAST_OPC) {
  67                  /* OST opcode */
  68                 return (opc - OST_FIRST_OPC);
  69         } else if (opc < MDS_LAST_OPC) {
  70                 /* MDS opcode */
  71                 return (opc - MDS_FIRST_OPC +
  72                         (OST_LAST_OPC - OST_FIRST_OPC));
  73         } else if (opc < LDLM_LAST_OPC) {
  74                 /* LDLM Opcode */
  75                 return (opc - LDLM_FIRST_OPC +
  76                         (MDS_LAST_OPC - MDS_FIRST_OPC) +
  77                         (OST_LAST_OPC - OST_FIRST_OPC));
  78         } else if (opc < OBD_LAST_OPC) {
  79                 /* OBD Ping */
  80                 return (opc - OBD_FIRST_OPC +
  81                         (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
  82                         (MDS_LAST_OPC - MDS_FIRST_OPC) +
  83                         (OST_LAST_OPC - OST_FIRST_OPC));
  84         } else if (opc < FLD_LAST_OPC) {
  85                 /* FLD opcode */
  86                 return (opc - FLD_FIRST_OPC +
  87                         (OBD_LAST_OPC - OBD_FIRST_OPC) +
  88                         (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
  89                         (MDS_LAST_OPC - MDS_FIRST_OPC) +
  90                         (OST_LAST_OPC - OST_FIRST_OPC));
  91         } else {
  92                 /* Unknown Opcode */
  93                 return -1;
  94         }
  95 }
  96
  97 #define LUSTRE_MAX_OPCODES ((LDLM_LAST_OPC - LDLM_FIRST_OPC)   + \
  98                             (MDS_LAST_OPC - MDS_FIRST_OPC)     + \
  99                             (OST_LAST_OPC - OST_FIRST_OPC)     + \
 100                             (OBD_LAST_OPC - OBD_FIRST_OPC)     + \
 101                             (FLD_LAST_OPC - FLD_FIRST_OPC))
 102
 103 enum {
 104         PTLRPC_REQWAIT_CNTR = 0,
 105         PTLRPC_REQQDEPTH_CNTR,
 106         PTLRPC_REQACTIVE_CNTR,
 107         PTLRPC_REQBUF_AVAIL_CNTR,
 108         PTLRPC_LAST_CNTR
 109 };
 110
 111 int ptlrpc_expire_one_request(struct ptlrpc_request *req);
 112
 113 /* pers.c */
 114 void ptlrpc_fill_bulk_md(lnet_md_t *md, struct ptlrpc_bulk_desc *desc);
 115 void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, struct page *page,
 116                           int pageoffset, int len);
 117 void ptl_rpc_wipe_bulk_pages(struct ptlrpc_bulk_desc *desc);
 118
 119 /* pinger.c */
 120 int ptlrpc_start_pinger(void);
 121 int ptlrpc_stop_pinger(void);
 122 void ptlrpc_pinger_sending_on_import(struct obd_import *imp);
 123 void ptlrpc_pinger_wake_up(void);
 124 void ptlrpc_ping_import_soon(struct obd_import *imp);
 125 #ifdef __KERNEL__
 126 int ping_evictor_wake(struct obd_export *exp);
 127 #else
 128 #define ping_evictor_wake(exp)     1
 129 #endif
 130
 131 #endif /* PTLRPC_INTERNAL_H */