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 extern int test_req_buffer_pressure;
  38
  39 void ptlrpc_request_handle_notconn(struct ptlrpc_request *);
  40 void lustre_assert_wire_constants(void);
  41 int ptlrpc_import_in_recovery(struct obd_import *imp);
  42 int ptlrpc_set_import_discon(struct obd_import *imp, __u32 conn_cnt);
  43 void ptlrpc_handle_failed_import(struct obd_import *imp);
  44 int ptlrpc_replay_next(struct obd_import *imp, int *inflight);
  45 void ptlrpc_initiate_recovery(struct obd_import *imp);
  46
  47
  48 #ifdef LPROCFS
  49 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *proc_entry,
  50                                      struct ptlrpc_service *svc);
  51 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc);
  52 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req);
  53 void ptlrpc_lprocfs_do_request_stat (struct ptlrpc_request *req,
  54                                      long q_usec, long work_usec);
  55 #else
  56 #define ptlrpc_lprocfs_register_service(params...) do{}while(0)
  57 #define ptlrpc_lprocfs_unregister_service(params...) do{}while(0)
  58 #define ptlrpc_lprocfs_rpc_sent(params...) do{}while(0)
  59 #define ptlrpc_lprocfs_do_request_stat(params...) do{}while(0)
  60 #endif /* LPROCFS */
  61
  62 /* recovd_thread.c */
  63 int llog_init_commit_master(void);
  64 int llog_cleanup_commit_master(int force);
  65
  66 static inline int opcode_offset(__u32 opc) {
  67         if (opc < OST_LAST_OPC) {
  68                  /* OST opcode */
  69                 return (opc - OST_FIRST_OPC);
  70         } else if (opc < MDS_LAST_OPC) {
  71                 /* MDS opcode */
  72                 return (opc - MDS_FIRST_OPC +
  73                         (OST_LAST_OPC - OST_FIRST_OPC));
  74         } else if (opc < LDLM_LAST_OPC) {
  75                 /* LDLM Opcode */
  76                 return (opc - LDLM_FIRST_OPC +
  77                         (MDS_LAST_OPC - MDS_FIRST_OPC) +
  78                         (OST_LAST_OPC - OST_FIRST_OPC));
  79         } else if (opc < OBD_LAST_OPC) {
  80                 /* OBD Ping */
  81                 return (opc - OBD_FIRST_OPC +
  82                         (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
  83                         (MDS_LAST_OPC - MDS_FIRST_OPC) +
  84                         (OST_LAST_OPC - OST_FIRST_OPC));
  85         } else if (opc < FLD_LAST_OPC) {
  86                 /* FLD opcode */
  87                 return (opc - FLD_FIRST_OPC +
  88                         (OBD_LAST_OPC - OBD_FIRST_OPC) +
  89                         (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
  90                         (MDS_LAST_OPC - MDS_FIRST_OPC) +
  91                         (OST_LAST_OPC - OST_FIRST_OPC));
  92         } else if (opc < SEQ_LAST_OPC) {
  93                 /* SEQ opcode */
  94                 return (opc - SEQ_FIRST_OPC +
  95                         (OBD_LAST_OPC - OBD_FIRST_OPC) +
  96                         (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
  97                         (MDS_LAST_OPC - MDS_FIRST_OPC) +
  98                         (OST_LAST_OPC - OST_FIRST_OPC)) +
  99                         (FLD_LAST_OPC - FLD_FIRST_OPC);
 100         } else {
 101                 /* Unknown Opcode */
 102                 return -1;
 103         }
 104 }
 105
 106 #define LUSTRE_MAX_OPCODES ((LDLM_LAST_OPC - LDLM_FIRST_OPC)   + \
 107                             (MDS_LAST_OPC - MDS_FIRST_OPC)     + \
 108                             (OST_LAST_OPC - OST_FIRST_OPC)     + \
 109                             (OBD_LAST_OPC - OBD_FIRST_OPC)     + \
 110                             (FLD_LAST_OPC - FLD_FIRST_OPC)     + \
 111                             (SEQ_LAST_OPC - SEQ_FIRST_OPC))
 112
 113 enum {
 114         PTLRPC_REQWAIT_CNTR = 0,
 115         PTLRPC_REQQDEPTH_CNTR,
 116         PTLRPC_REQACTIVE_CNTR,
 117         PTLRPC_REQBUF_AVAIL_CNTR,
 118         PTLRPC_LAST_CNTR
 119 };
 120
 121 int ptlrpc_expire_one_request(struct ptlrpc_request *req);
 122
 123 /* pers.c */
 124 void ptlrpc_fill_bulk_md(lnet_md_t *md, struct ptlrpc_bulk_desc *desc);
 125 void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, cfs_page_t *page,
 126                           int pageoffset, int len);
 127 void ptl_rpc_wipe_bulk_pages(struct ptlrpc_bulk_desc *desc);
 128
 129 /* pack_generic.c */
 130 struct ptlrpc_reply_state *lustre_get_emerg_rs(struct ptlrpc_service *svc);
 131 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs);
 132
 133 /* pinger.c */
 134 int ptlrpc_start_pinger(void);
 135 int ptlrpc_stop_pinger(void);
 136 void ptlrpc_pinger_sending_on_import(struct obd_import *imp);
 137 void ptlrpc_pinger_wake_up(void);
 138 void ptlrpc_ping_import_soon(struct obd_import *imp);
 139 #ifdef __KERNEL__
 140 int ping_evictor_wake(struct obd_export *exp);
 141 #else
 142 #define ping_evictor_wake(exp)     1
 143 #endif
 144
 145 /* sec_null.c */
 146 int sptlrpc_null_init(void);
 147 int sptlrpc_null_exit(void);
 148
 149 /* sec_plain.c */
 150 int sptlrpc_plain_init(void);
 151 int sptlrpc_plain_exit(void);
 152
 153 /* sec.c */
 154 int sptlrpc_init(void);
 155 int sptlrpc_exit(void);
 156
 157 #endif /* PTLRPC_INTERNAL_H */