lustre/ptlrpc/layout.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/ptlrpc/layout.c
  37  *
  38  * Lustre Metadata Target (mdt) request handler
  39  *
  40  * Author: Nikita Danilov <nikita@clusterfs.com>
  41  */
  42
  43 #if !defined(__REQ_LAYOUT_USER__)
  44
  45 #ifndef EXPORT_SYMTAB
  46 # define EXPORT_SYMTAB
  47 #endif
  48 #define DEBUG_SUBSYSTEM S_RPC
  49
  50 #ifdef __KERNEL__
  51 #include <linux/module.h>
  52 #else
  53 # include <liblustre.h>
  54 #endif
  55
  56 /* LUSTRE_VERSION_CODE */
  57 #include <lustre_ver.h>
  58
  59 #include <obd_support.h>
  60 /* lustre_swab_mdt_body */
  61 #include <lustre/lustre_idl.h>
  62 /* obd2cli_tgt() (required by DEBUG_REQ()) */
  63 #include <obd.h>
  64
  65 /* __REQ_LAYOUT_USER__ */
  66 #endif
  67 /* struct ptlrpc_request, lustre_msg* */
  68 #include <lustre_req_layout.h>
  69 #include <lustre_acl.h>
  70
  71 /*
  72  * empty set of fields... for suitable definition of emptiness.
  73  */
  74 static const struct req_msg_field *empty[] = {
  75         &RMF_PTLRPC_BODY
  76 };
  77
  78 static const struct req_msg_field *mgs_target_info_only[] = {
  79         &RMF_PTLRPC_BODY,
  80         &RMF_MGS_TARGET_INFO
  81 };
  82
  83 static const struct req_msg_field *mgs_set_info[] = {
  84         &RMF_PTLRPC_BODY,
  85         &RMF_MGS_SEND_PARAM
  86 };
  87
  88 static const struct req_msg_field *log_cancel_client[] = {
  89         &RMF_PTLRPC_BODY,
  90         &RMF_LOGCOOKIES
  91 };
  92
  93 static const struct req_msg_field *mdt_body_only[] = {
  94         &RMF_PTLRPC_BODY,
  95         &RMF_MDT_BODY
  96 };
  97
  98 static const struct req_msg_field *mdt_body_capa[] = {
  99         &RMF_PTLRPC_BODY,
 100         &RMF_MDT_BODY,
 101         &RMF_CAPA1
 102 };
 103
 104 static const struct req_msg_field *quotactl_only[] = {
 105         &RMF_PTLRPC_BODY,
 106         &RMF_OBD_QUOTACTL
 107 };
 108 static const struct req_msg_field *quota_adjust_qunit_only[] = {
 109         &RMF_PTLRPC_BODY,
 110         &RMF_QUOTA_ADJUST_QUNIT
 111 };
 112
 113 static const struct req_msg_field *qunit_data_only[] = {
 114         &RMF_PTLRPC_BODY,
 115         &RMF_QUNIT_DATA
 116 };
 117
 118 static const struct req_msg_field *mdt_close_client[] = {
 119         &RMF_PTLRPC_BODY,
 120         &RMF_MDT_EPOCH,
 121         &RMF_REC_REINT,
 122         &RMF_CAPA1
 123 };
 124
 125 static const struct req_msg_field *obd_statfs_server[] = {
 126         &RMF_PTLRPC_BODY,
 127         &RMF_OBD_STATFS
 128 };
 129
 130 static const struct req_msg_field *seq_query_client[] = {
 131         &RMF_PTLRPC_BODY,
 132         &RMF_SEQ_OPC,
 133         &RMF_SEQ_RANGE
 134 };
 135
 136 static const struct req_msg_field *seq_query_server[] = {
 137         &RMF_PTLRPC_BODY,
 138         &RMF_SEQ_RANGE
 139 };
 140
 141 static const struct req_msg_field *fld_query_client[] = {
 142         &RMF_PTLRPC_BODY,
 143         &RMF_FLD_OPC,
 144         &RMF_FLD_MDFLD
 145 };
 146
 147 static const struct req_msg_field *fld_query_server[] = {
 148         &RMF_PTLRPC_BODY,
 149         &RMF_FLD_MDFLD
 150 };
 151
 152 static const struct req_msg_field *mds_getattr_name_client[] = {
 153         &RMF_PTLRPC_BODY,
 154         &RMF_MDT_BODY,
 155         &RMF_CAPA1,
 156         &RMF_NAME
 157 };
 158
 159 static const struct req_msg_field *mds_reint_client[] = {
 160         &RMF_PTLRPC_BODY,
 161         &RMF_REC_REINT
 162 };
 163
 164 static const struct req_msg_field *mds_reint_create_client[] = {
 165         &RMF_PTLRPC_BODY,
 166         &RMF_REC_REINT,
 167         &RMF_CAPA1,
 168         &RMF_NAME
 169 };
 170
 171 static const struct req_msg_field *mds_reint_create_slave_client[] = {
 172         &RMF_PTLRPC_BODY,
 173         &RMF_REC_REINT,
 174         &RMF_CAPA1,
 175         &RMF_NAME,
 176         &RMF_EADATA,
 177         &RMF_DLM_REQ
 178 };
 179
 180 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
 181         &RMF_PTLRPC_BODY,
 182         &RMF_REC_REINT,
 183         &RMF_CAPA1,
 184         &RMF_NAME,
 185         &RMF_EADATA,
 186         &RMF_DLM_REQ
 187 };
 188
 189 static const struct req_msg_field *mds_reint_create_sym_client[] = {
 190         &RMF_PTLRPC_BODY,
 191         &RMF_REC_REINT,
 192         &RMF_CAPA1,
 193         &RMF_NAME,
 194         &RMF_SYMTGT,
 195         &RMF_DLM_REQ
 196 };
 197
 198 static const struct req_msg_field *mds_reint_open_client[] = {
 199         &RMF_PTLRPC_BODY,
 200         &RMF_REC_REINT,
 201         &RMF_CAPA1,
 202         &RMF_CAPA2,
 203         &RMF_NAME,
 204         &RMF_EADATA
 205 };
 206
 207 static const struct req_msg_field *mds_reint_open_server[] = {
 208         &RMF_PTLRPC_BODY,
 209         &RMF_MDT_BODY,
 210         &RMF_MDT_MD,
 211         &RMF_ACL,
 212         &RMF_CAPA1,
 213         &RMF_CAPA2
 214 };
 215
 216 static const struct req_msg_field *mds_reint_unlink_client[] = {
 217         &RMF_PTLRPC_BODY,
 218         &RMF_REC_REINT,
 219         &RMF_CAPA1,
 220         &RMF_NAME,
 221         &RMF_DLM_REQ
 222 };
 223
 224 static const struct req_msg_field *mds_reint_link_client[] = {
 225         &RMF_PTLRPC_BODY,
 226         &RMF_REC_REINT,
 227         &RMF_CAPA1,
 228         &RMF_CAPA2,
 229         &RMF_NAME,
 230         &RMF_DLM_REQ
 231 };
 232
 233 static const struct req_msg_field *mds_reint_rename_client[] = {
 234         &RMF_PTLRPC_BODY,
 235         &RMF_REC_REINT,
 236         &RMF_CAPA1,
 237         &RMF_CAPA2,
 238         &RMF_NAME,
 239         &RMF_SYMTGT,
 240         &RMF_DLM_REQ
 241 };
 242
 243 static const struct req_msg_field *mds_last_unlink_server[] = {
 244         &RMF_PTLRPC_BODY,
 245         &RMF_MDT_BODY,
 246         &RMF_MDT_MD,
 247         &RMF_LOGCOOKIES,
 248         &RMF_CAPA1,
 249         &RMF_CAPA2
 250 };
 251
 252 static const struct req_msg_field *mds_reint_setattr_client[] = {
 253         &RMF_PTLRPC_BODY,
 254         &RMF_REC_REINT,
 255         &RMF_CAPA1,
 256         &RMF_MDT_EPOCH,
 257         &RMF_EADATA,
 258         &RMF_LOGCOOKIES,
 259         &RMF_DLM_REQ
 260 };
 261
 262 static const struct req_msg_field *mds_reint_setxattr_client[] = {
 263         &RMF_PTLRPC_BODY,
 264         &RMF_REC_REINT,
 265         &RMF_CAPA1,
 266         &RMF_NAME,
 267         &RMF_EADATA
 268 };
 269
 270 static const struct req_msg_field *obd_connect_client[] = {
 271         &RMF_PTLRPC_BODY,
 272         &RMF_TGTUUID,
 273         &RMF_CLUUID,
 274         &RMF_CONN,
 275         &RMF_CONNECT_DATA
 276 };
 277
 278 static const struct req_msg_field *obd_connect_server[] = {
 279         &RMF_PTLRPC_BODY,
 280         &RMF_CONNECT_DATA
 281 };
 282
 283 static const struct req_msg_field *mds_set_info_client[] = {
 284         &RMF_PTLRPC_BODY,
 285         &RMF_SETINFO_KEY,
 286         &RMF_SETINFO_VAL
 287 };
 288
 289 static const struct req_msg_field *ldlm_enqueue_client[] = {
 290         &RMF_PTLRPC_BODY,
 291         &RMF_DLM_REQ
 292 };
 293
 294 static const struct req_msg_field *ldlm_enqueue_server[] = {
 295         &RMF_PTLRPC_BODY,
 296         &RMF_DLM_REP
 297 };
 298
 299 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
 300         &RMF_PTLRPC_BODY,
 301         &RMF_DLM_REP,
 302         &RMF_DLM_LVB
 303 };
 304
 305 static const struct req_msg_field *ldlm_cp_callback_client[] = {
 306         &RMF_PTLRPC_BODY,
 307         &RMF_DLM_REQ,
 308         &RMF_DLM_LVB
 309 };
 310
 311 static const struct req_msg_field *ldlm_gl_callback_server[] = {
 312         &RMF_PTLRPC_BODY,
 313         &RMF_DLM_LVB
 314 };
 315
 316 static const struct req_msg_field *ldlm_intent_client[] = {
 317         &RMF_PTLRPC_BODY,
 318         &RMF_DLM_REQ,
 319         &RMF_LDLM_INTENT,
 320         &RMF_REC_REINT
 321 };
 322
 323 static const struct req_msg_field *ldlm_intent_server[] = {
 324         &RMF_PTLRPC_BODY,
 325         &RMF_DLM_REP,
 326         &RMF_MDT_BODY,
 327         &RMF_MDT_MD,
 328         &RMF_ACL
 329 };
 330
 331 static const struct req_msg_field *ldlm_intent_open_server[] = {
 332         &RMF_PTLRPC_BODY,
 333         &RMF_DLM_REP,
 334         &RMF_MDT_BODY,
 335         &RMF_MDT_MD,
 336         &RMF_ACL,
 337         &RMF_CAPA1,
 338         &RMF_CAPA2
 339 };
 340
 341 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
 342         &RMF_PTLRPC_BODY,
 343         &RMF_DLM_REQ,
 344         &RMF_LDLM_INTENT,
 345         &RMF_MDT_BODY,     /* coincides with mds_getattr_name_client[] */
 346         &RMF_CAPA1,
 347         &RMF_NAME
 348 };
 349
 350 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
 351         &RMF_PTLRPC_BODY,
 352         &RMF_DLM_REP,
 353         &RMF_MDT_BODY,
 354         &RMF_MDT_MD,
 355         &RMF_ACL,
 356         &RMF_CAPA1
 357 };
 358
 359 static const struct req_msg_field *ldlm_intent_create_client[] = {
 360         &RMF_PTLRPC_BODY,
 361         &RMF_DLM_REQ,
 362         &RMF_LDLM_INTENT,
 363         &RMF_REC_REINT,    /* coincides with mds_reint_create_client[] */
 364         &RMF_CAPA1,
 365         &RMF_NAME,
 366         &RMF_EADATA
 367 };
 368
 369 static const struct req_msg_field *ldlm_intent_open_client[] = {
 370         &RMF_PTLRPC_BODY,
 371         &RMF_DLM_REQ,
 372         &RMF_LDLM_INTENT,
 373         &RMF_REC_REINT,    /* coincides with mds_reint_open_client[] */
 374         &RMF_CAPA1,
 375         &RMF_CAPA2,
 376         &RMF_NAME,
 377         &RMF_EADATA,
 378         &RMF_REC_JOINFILE
 379 };
 380
 381 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
 382         &RMF_PTLRPC_BODY,
 383         &RMF_DLM_REQ,
 384         &RMF_LDLM_INTENT,
 385         &RMF_REC_REINT,    /* coincides with mds_reint_unlink_client[] */
 386         &RMF_CAPA1,
 387         &RMF_NAME
 388 };
 389
 390 static const struct req_msg_field *mds_getxattr_client[] = {
 391         &RMF_PTLRPC_BODY,
 392         &RMF_MDT_BODY,
 393         &RMF_CAPA1,
 394         &RMF_NAME,
 395         &RMF_EADATA
 396 };
 397
 398 static const struct req_msg_field *mds_getxattr_server[] = {
 399         &RMF_PTLRPC_BODY,
 400         &RMF_MDT_BODY,
 401         &RMF_EADATA
 402 };
 403
 404 static const struct req_msg_field *mds_getattr_server[] = {
 405         &RMF_PTLRPC_BODY,
 406         &RMF_MDT_BODY,
 407         &RMF_MDT_MD,
 408         &RMF_ACL,
 409         &RMF_CAPA1,
 410         &RMF_CAPA2
 411 };
 412
 413 static const struct req_msg_field *mds_setattr_server[] = {
 414         &RMF_PTLRPC_BODY,
 415         &RMF_MDT_BODY,
 416         &RMF_MDT_MD,
 417         &RMF_ACL,
 418         &RMF_CAPA1,
 419         &RMF_CAPA2
 420 };
 421
 422 static const struct req_msg_field *llog_catinfo_client[] = {
 423         &RMF_PTLRPC_BODY,
 424         &RMF_NAME,
 425         &RMF_STRING
 426 };
 427
 428 static const struct req_msg_field *llog_catinfo_server[] = {
 429         &RMF_PTLRPC_BODY,
 430         &RMF_STRING
 431 };
 432
 433 static const struct req_msg_field *llog_origin_handle_create_client[] = {
 434         &RMF_PTLRPC_BODY,
 435         &RMF_LLOGD_BODY,
 436         &RMF_NAME
 437 };
 438
 439 static const struct req_msg_field *llogd_body_only[] = {
 440         &RMF_PTLRPC_BODY,
 441         &RMF_LLOGD_BODY
 442 };
 443
 444 static const struct req_msg_field *llog_log_hdr_only[] = {
 445         &RMF_PTLRPC_BODY,
 446         &RMF_LLOG_LOG_HDR
 447 };
 448
 449 static const struct req_msg_field *llogd_conn_body_only[] = {
 450         &RMF_PTLRPC_BODY,
 451         &RMF_LLOGD_CONN_BODY
 452 };
 453
 454 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
 455         &RMF_PTLRPC_BODY,
 456         &RMF_LLOGD_BODY,
 457         &RMF_EADATA
 458 };
 459
 460 static const struct req_msg_field *ost_body_only[] = {
 461         &RMF_PTLRPC_BODY,
 462         &RMF_OST_BODY
 463 };
 464
 465 static const struct req_msg_field *ost_body_capa[] = {
 466         &RMF_PTLRPC_BODY,
 467         &RMF_OST_BODY,
 468         &RMF_CAPA1
 469 };
 470
 471 static const struct req_msg_field *ost_destroy_client[] = {
 472         &RMF_PTLRPC_BODY,
 473         &RMF_OST_BODY,
 474         &RMF_DLM_REQ,
 475         &RMF_CAPA1
 476 };
 477
 478
 479 static const struct req_msg_field *ost_brw_client[] = {
 480         &RMF_PTLRPC_BODY,
 481         &RMF_OST_BODY,
 482         &RMF_OBD_IOOBJ,
 483         &RMF_NIOBUF_REMOTE,
 484         &RMF_CAPA1
 485 };
 486
 487 static const struct req_msg_field *ost_brw_server[] = {
 488         &RMF_PTLRPC_BODY,
 489         &RMF_OST_BODY,
 490         &RMF_NIOBUF_REMOTE
 491 };
 492
 493 static const struct req_msg_field *ost_set_info_client[] = {
 494         &RMF_PTLRPC_BODY,
 495         &RMF_SETINFO_KEY,
 496         &RMF_SETINFO_VAL
 497 };
 498
 499 static const struct req_msg_field *ost_get_info_generic_server[] = {
 500         &RMF_PTLRPC_BODY,
 501         &RMF_GENERIC_DATA,
 502 };
 503
 504 static const struct req_msg_field *ost_get_info_generic_client[] = {
 505         &RMF_PTLRPC_BODY,
 506         &RMF_SETINFO_KEY
 507 };
 508
 509 static const struct req_msg_field *ost_get_last_id_server[] = {
 510         &RMF_PTLRPC_BODY,
 511         &RMF_OBD_ID
 512 };
 513
 514 static const struct req_msg_field *ost_get_fiemap_client[] = {
 515         &RMF_PTLRPC_BODY,
 516         &RMF_FIEMAP_KEY,
 517         &RMF_FIEMAP_VAL
 518 };
 519
 520 static const struct req_msg_field *ost_get_fiemap_server[] = {
 521         &RMF_PTLRPC_BODY,
 522         &RMF_FIEMAP_VAL
 523 };
 524
 525 static const struct req_format *req_formats[] = {
 526         &RQF_OBD_PING,
 527         &RQF_SEC_CTX,
 528         &RQF_MGS_TARGET_REG,
 529         &RQF_MGS_SET_INFO,
 530         &RQF_SEQ_QUERY,
 531         &RQF_FLD_QUERY,
 532         &RQF_MDS_CONNECT,
 533         &RQF_MDS_DISCONNECT,
 534         &RQF_MDS_SET_INFO,
 535         &RQF_MDS_GETSTATUS,
 536         &RQF_MDS_STATFS,
 537         &RQF_MDS_GETATTR,
 538         &RQF_MDS_GETATTR_NAME,
 539         &RQF_MDS_GETXATTR,
 540         &RQF_MDS_SYNC,
 541         &RQF_MDS_CLOSE,
 542         &RQF_MDS_PIN,
 543         &RQF_MDS_UNPIN,
 544         &RQF_MDS_READPAGE,
 545         &RQF_MDS_WRITEPAGE,
 546         &RQF_MDS_IS_SUBDIR,
 547         &RQF_MDS_DONE_WRITING,
 548         &RQF_MDS_REINT,
 549         &RQF_MDS_REINT_CREATE,
 550         &RQF_MDS_REINT_CREATE_RMT_ACL,
 551         &RQF_MDS_REINT_CREATE_SLAVE,
 552         &RQF_MDS_REINT_CREATE_SYM,
 553         &RQF_MDS_REINT_OPEN,
 554         &RQF_MDS_REINT_UNLINK,
 555         &RQF_MDS_REINT_LINK,
 556         &RQF_MDS_REINT_RENAME,
 557         &RQF_MDS_REINT_SETATTR,
 558         &RQF_MDS_REINT_SETXATTR,
 559         &RQF_MDS_QUOTACHECK,
 560         &RQF_MDS_QUOTACTL,
 561         &RQF_MDS_QUOTA_DQACQ,
 562         &RQF_QC_CALLBACK,
 563         &RQF_OST_CONNECT,
 564         &RQF_OST_DISCONNECT,
 565         &RQF_OST_QUOTACHECK,
 566         &RQF_OST_QUOTACTL,
 567         &RQF_OST_QUOTA_ADJUST_QUNIT,
 568         &RQF_OST_GETATTR,
 569         &RQF_OST_SETATTR,
 570         &RQF_OST_CREATE,
 571         &RQF_OST_PUNCH,
 572         &RQF_OST_SYNC,
 573         &RQF_OST_DESTROY,
 574         &RQF_OST_BRW,
 575         &RQF_OST_STATFS,
 576         &RQF_OST_SET_INFO,
 577         &RQF_OST_GET_INFO_GENERIC,
 578         &RQF_OST_GET_INFO_LAST_ID,
 579         &RQF_OST_GET_INFO_FIEMAP,
 580         &RQF_LDLM_ENQUEUE,
 581         &RQF_LDLM_ENQUEUE_LVB,
 582         &RQF_LDLM_CONVERT,
 583         &RQF_LDLM_CANCEL,
 584         &RQF_LDLM_CALLBACK,
 585         &RQF_LDLM_CP_CALLBACK,
 586         &RQF_LDLM_BL_CALLBACK,
 587         &RQF_LDLM_GL_CALLBACK,
 588         &RQF_LDLM_INTENT,
 589         &RQF_LDLM_INTENT_GETATTR,
 590         &RQF_LDLM_INTENT_OPEN,
 591         &RQF_LDLM_INTENT_CREATE,
 592         &RQF_LDLM_INTENT_UNLINK,
 593         &RQF_LOG_CANCEL,
 594         &RQF_LLOG_CATINFO,
 595         &RQF_LLOG_ORIGIN_HANDLE_CREATE,
 596         &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
 597         &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
 598         &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
 599         &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
 600         &RQF_LLOG_ORIGIN_CONNECT
 601 };
 602
 603 struct req_msg_field {
 604         __u32       rmf_flags;
 605         const char *rmf_name;
 606         /**
 607          * Field length. (-1) means "variable length".
 608          */
 609         int         rmf_size;
 610         void      (*rmf_swabber)(void *);
 611         int         rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
 612 };
 613
 614 enum rmf_flags {
 615         RMF_F_STRING = 1 << 0
 616 };
 617
 618 struct req_capsule;
 619
 620 /*
 621  * Request fields.
 622  */
 623 #define DEFINE_MSGF(name, flags, size, swabber) {       \
 624         .rmf_name    = (name),                          \
 625         .rmf_flags   = (flags),                         \
 626         .rmf_size    = (size),                          \
 627         .rmf_swabber = (void (*)(void*))(swabber)       \
 628 }
 629
 630 const struct req_msg_field RMF_GENERIC_DATA =
 631         DEFINE_MSGF("generic_data", 0,
 632                     -1, NULL);
 633 EXPORT_SYMBOL(RMF_GENERIC_DATA);
 634
 635 const struct req_msg_field RMF_MGS_TARGET_INFO =
 636         DEFINE_MSGF("mgs_target_info", 0,
 637                     sizeof(struct mgs_target_info),
 638                     lustre_swab_mgs_target_info);
 639 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
 640
 641 const struct req_msg_field RMF_MGS_SEND_PARAM =
 642         DEFINE_MSGF("mgs_send_param", 0,
 643                     sizeof(struct mgs_send_param),
 644                     NULL);
 645 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
 646
 647 const struct req_msg_field RMF_SETINFO_VAL =
 648         DEFINE_MSGF("setinfo_val", 0,
 649                     sizeof(__u32), lustre_swab_generic_32s);
 650 EXPORT_SYMBOL(RMF_SETINFO_VAL);
 651
 652 const struct req_msg_field RMF_SEQ_OPC =
 653         DEFINE_MSGF("seq_query_opc", 0,
 654                     sizeof(__u32), lustre_swab_generic_32s);
 655 EXPORT_SYMBOL(RMF_SEQ_OPC);
 656
 657 const struct req_msg_field RMF_SEQ_RANGE =
 658         DEFINE_MSGF("seq_query_range", 0,
 659                     sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
 660 EXPORT_SYMBOL(RMF_SEQ_RANGE);
 661
 662 const struct req_msg_field RMF_FLD_OPC =
 663         DEFINE_MSGF("fld_query_opc", 0,
 664                     sizeof(__u32), lustre_swab_generic_32s);
 665 EXPORT_SYMBOL(RMF_FLD_OPC);
 666
 667 const struct req_msg_field RMF_FLD_MDFLD =
 668         DEFINE_MSGF("fld_query_mdfld", 0,
 669                     sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
 670 EXPORT_SYMBOL(RMF_FLD_MDFLD);
 671
 672 const struct req_msg_field RMF_MDT_BODY =
 673         DEFINE_MSGF("mdt_body", 0,
 674                     sizeof(struct mdt_body), lustre_swab_mdt_body);
 675 EXPORT_SYMBOL(RMF_MDT_BODY);
 676
 677 const struct req_msg_field RMF_OBD_QUOTACTL =
 678         DEFINE_MSGF("obd_quotactl", 0,
 679                     sizeof(struct obd_quotactl), lustre_swab_obd_quotactl);
 680 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
 681
 682 const struct req_msg_field RMF_QUOTA_ADJUST_QUNIT =
 683         DEFINE_MSGF("quota_adjust_qunit", 0,
 684                     sizeof(struct quota_adjust_qunit),
 685                     lustre_swab_quota_adjust_qunit);
 686 EXPORT_SYMBOL(RMF_QUOTA_ADJUST_QUNIT);
 687
 688 const struct req_msg_field RMF_QUNIT_DATA =
 689         DEFINE_MSGF("qunit_data", 0,
 690                     sizeof(struct qunit_data), NULL);
 691 EXPORT_SYMBOL(RMF_QUNIT_DATA);
 692
 693 const struct req_msg_field RMF_MDT_EPOCH =
 694         DEFINE_MSGF("mdt_epoch", 0,
 695                     sizeof(struct mdt_epoch), lustre_swab_mdt_epoch);
 696 EXPORT_SYMBOL(RMF_MDT_EPOCH);
 697
 698 const struct req_msg_field RMF_PTLRPC_BODY =
 699         DEFINE_MSGF("ptlrpc_body", 0,
 700                     sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body);
 701 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
 702
 703 const struct req_msg_field RMF_OBD_STATFS =
 704         DEFINE_MSGF("obd_statfs", 0,
 705                     sizeof(struct obd_statfs), lustre_swab_obd_statfs);
 706 EXPORT_SYMBOL(RMF_OBD_STATFS);
 707
 708 const struct req_msg_field RMF_SETINFO_KEY =
 709         DEFINE_MSGF("setinfo_key", 0, -1, NULL);
 710 EXPORT_SYMBOL(RMF_SETINFO_KEY);
 711
 712 const struct req_msg_field RMF_NAME =
 713         DEFINE_MSGF("name", RMF_F_STRING, -1, NULL);
 714 EXPORT_SYMBOL(RMF_NAME);
 715
 716 const struct req_msg_field RMF_SYMTGT =
 717         DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL);
 718 EXPORT_SYMBOL(RMF_SYMTGT);
 719
 720 const struct req_msg_field RMF_TGTUUID =
 721         DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
 722 EXPORT_SYMBOL(RMF_TGTUUID);
 723
 724 const struct req_msg_field RMF_CLUUID =
 725         DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
 726 EXPORT_SYMBOL(RMF_CLUUID);
 727
 728 const struct req_msg_field RMF_STRING =
 729         DEFINE_MSGF("string", RMF_F_STRING, -1, NULL);
 730 EXPORT_SYMBOL(RMF_STRING);
 731
 732 const struct req_msg_field RMF_LLOGD_BODY =
 733         DEFINE_MSGF("llogd_body", 0,
 734                     sizeof(struct llogd_body), lustre_swab_llogd_body);
 735 EXPORT_SYMBOL(RMF_LLOGD_BODY);
 736
 737 const struct req_msg_field RMF_LLOG_LOG_HDR =
 738         DEFINE_MSGF("llog_log_hdr", 0,
 739                     sizeof(struct llog_log_hdr), lustre_swab_llog_hdr);
 740 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
 741
 742 const struct req_msg_field RMF_LLOGD_CONN_BODY =
 743         DEFINE_MSGF("llogd_conn_body", 0,
 744                     sizeof(struct llogd_conn_body),
 745                     lustre_swab_llogd_conn_body);
 746 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
 747
 748 /*
 749  * connection handle received in MDS_CONNECT request.
 750  *
 751  * XXX no swabbing?
 752  */
 753 const struct req_msg_field RMF_CONN =
 754         DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL);
 755 EXPORT_SYMBOL(RMF_CONN);
 756
 757 const struct req_msg_field RMF_CONNECT_DATA =
 758         DEFINE_MSGF("cdata", 0,
 759                     sizeof(struct obd_connect_data), lustre_swab_connect);
 760 EXPORT_SYMBOL(RMF_CONNECT_DATA);
 761
 762 const struct req_msg_field RMF_DLM_REQ =
 763         DEFINE_MSGF("dlm_req", 0,
 764                     sizeof(struct ldlm_request), lustre_swab_ldlm_request);
 765 EXPORT_SYMBOL(RMF_DLM_REQ);
 766
 767 const struct req_msg_field RMF_DLM_REP =
 768         DEFINE_MSGF("dlm_rep", 0,
 769                     sizeof(struct ldlm_reply), lustre_swab_ldlm_reply);
 770 EXPORT_SYMBOL(RMF_DLM_REP);
 771
 772 const struct req_msg_field RMF_LDLM_INTENT =
 773         DEFINE_MSGF("ldlm_intent", 0,
 774                     sizeof(struct ldlm_intent), lustre_swab_ldlm_intent);
 775 EXPORT_SYMBOL(RMF_LDLM_INTENT);
 776
 777 const struct req_msg_field RMF_DLM_LVB =
 778         DEFINE_MSGF("dlm_lvb", 0, sizeof(struct ost_lvb), NULL);
 779 EXPORT_SYMBOL(RMF_DLM_LVB);
 780
 781 const struct req_msg_field RMF_MDT_MD =
 782         DEFINE_MSGF("mdt_md", 0, MIN_MD_SIZE, NULL);
 783 EXPORT_SYMBOL(RMF_MDT_MD);
 784
 785 const struct req_msg_field RMF_REC_REINT =
 786         DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
 787                     lustre_swab_mdt_rec_reint);
 788 EXPORT_SYMBOL(RMF_REC_REINT);
 789
 790 const struct req_msg_field RMF_REC_JOINFILE =
 791         DEFINE_MSGF("rec_joinfile", 0, sizeof(struct mdt_rec_join),
 792                     lustre_swab_mdt_rec_join);
 793 EXPORT_SYMBOL(RMF_REC_JOINFILE);
 794
 795 /* FIXME: this length should be defined as a macro */
 796 const struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1, NULL);
 797 EXPORT_SYMBOL(RMF_EADATA);
 798
 799 const struct req_msg_field RMF_ACL =
 800         DEFINE_MSGF("acl", 0, LUSTRE_POSIX_ACL_MAX_SIZE, NULL);
 801 EXPORT_SYMBOL(RMF_ACL);
 802
 803 const struct req_msg_field RMF_LOGCOOKIES =
 804         DEFINE_MSGF("logcookies", 0, sizeof(struct llog_cookie), NULL);
 805 EXPORT_SYMBOL(RMF_LOGCOOKIES);
 806
 807 const struct req_msg_field RMF_CAPA1 =
 808         DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
 809                     lustre_swab_lustre_capa);
 810 EXPORT_SYMBOL(RMF_CAPA1);
 811
 812 const struct req_msg_field RMF_CAPA2 =
 813         DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
 814                     lustre_swab_lustre_capa);
 815 EXPORT_SYMBOL(RMF_CAPA2);
 816
 817 /*
 818  * OST request field.
 819  */
 820 const struct req_msg_field RMF_OST_BODY =
 821         DEFINE_MSGF("ost_body", 0,
 822                     sizeof(struct ost_body), lustre_swab_ost_body);
 823 EXPORT_SYMBOL(RMF_OST_BODY);
 824
 825 const struct req_msg_field RMF_OBD_IOOBJ =
 826         DEFINE_MSGF("obd_ioobj", 0,
 827                     sizeof(struct obd_ioobj), lustre_swab_obd_ioobj);
 828 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
 829
 830 const struct req_msg_field RMF_NIOBUF_REMOTE =
 831         DEFINE_MSGF("niobuf_remote", 0, -1, lustre_swab_niobuf_remote);
 832 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
 833
 834 const struct req_msg_field RMF_OBD_ID =
 835         DEFINE_MSGF("obd_id", 0,
 836                     sizeof(obd_id), lustre_swab_ost_last_id);
 837 EXPORT_SYMBOL(RMF_OBD_ID);
 838
 839 const struct req_msg_field RMF_FIEMAP_KEY =
 840         DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
 841                     lustre_swab_fiemap);
 842 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
 843
 844 const struct req_msg_field RMF_FIEMAP_VAL =
 845         DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap);
 846 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
 847
 848 /*
 849  * Request formats.
 850  */
 851
 852 struct req_format {
 853         const char *rf_name;
 854         int         rf_idx;
 855         struct {
 856                 int                          nr;
 857                 const struct req_msg_field **d;
 858         } rf_fields[RCL_NR];
 859 };
 860
 861 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) {    \
 862         .rf_name   = name,                                              \
 863         .rf_fields = {                                                  \
 864                 [RCL_CLIENT] = {                                        \
 865                         .nr = client_nr,                                \
 866                         .d  = client                                    \
 867                 },                                                      \
 868                 [RCL_SERVER] = {                                        \
 869                         .nr = server_nr,                                \
 870                         .d  = server                                    \
 871                 }                                                       \
 872         }                                                               \
 873 }
 874
 875 #define DEFINE_REQ_FMT0(name, client, server)                                  \
 876 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
 877
 878 const struct req_format RQF_OBD_PING =
 879         DEFINE_REQ_FMT0("OBD_PING", empty, empty);
 880 EXPORT_SYMBOL(RQF_OBD_PING);
 881
 882 const struct req_format RQF_SEC_CTX =
 883         DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
 884 EXPORT_SYMBOL(RQF_SEC_CTX);
 885
 886 const struct req_format RQF_MGS_TARGET_REG =
 887         DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
 888                          mgs_target_info_only);
 889 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
 890
 891 const struct req_format RQF_MGS_SET_INFO =
 892         DEFINE_REQ_FMT0("MGS_SET_INTO", mgs_set_info,
 893                          mgs_set_info);
 894 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
 895
 896 const struct req_format RQF_SEQ_QUERY =
 897         DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
 898 EXPORT_SYMBOL(RQF_SEQ_QUERY);
 899
 900 const struct req_format RQF_FLD_QUERY =
 901         DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
 902 EXPORT_SYMBOL(RQF_FLD_QUERY);
 903
 904 const struct req_format RQF_LOG_CANCEL =
 905         DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
 906 EXPORT_SYMBOL(RQF_LOG_CANCEL);
 907
 908 const struct req_format RQF_MDS_QUOTACHECK =
 909         DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
 910 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
 911
 912 const struct req_format RQF_OST_QUOTACHECK =
 913         DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
 914 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
 915
 916 const struct req_format RQF_MDS_QUOTACTL =
 917         DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
 918 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
 919
 920 const struct req_format RQF_OST_QUOTACTL =
 921         DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
 922 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
 923
 924 const struct req_format RQF_OST_QUOTA_ADJUST_QUNIT =
 925         DEFINE_REQ_FMT0("OST_QUOTA_ADJUST_QUNIT", quota_adjust_qunit_only,
 926                         quota_adjust_qunit_only);
 927 EXPORT_SYMBOL(RQF_OST_QUOTA_ADJUST_QUNIT);
 928
 929 const struct req_format RQF_QC_CALLBACK =
 930         DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
 931 EXPORT_SYMBOL(RQF_QC_CALLBACK);
 932
 933 const struct req_format RQF_MDS_QUOTA_DQACQ =
 934         DEFINE_REQ_FMT0("MDS_QUOTA_DQACQ", qunit_data_only, qunit_data_only);
 935 EXPORT_SYMBOL(RQF_MDS_QUOTA_DQACQ);
 936
 937 const struct req_format RQF_MDS_GETSTATUS =
 938         DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
 939 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
 940
 941 const struct req_format RQF_MDS_STATFS =
 942         DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
 943 EXPORT_SYMBOL(RQF_MDS_STATFS);
 944
 945 const struct req_format RQF_MDS_SYNC =
 946         DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
 947 EXPORT_SYMBOL(RQF_MDS_SYNC);
 948
 949 const struct req_format RQF_MDS_GETATTR =
 950         DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
 951 EXPORT_SYMBOL(RQF_MDS_GETATTR);
 952
 953 const struct req_format RQF_MDS_GETXATTR =
 954         DEFINE_REQ_FMT0("MDS_GETXATTR",
 955                         mds_getxattr_client, mds_getxattr_server);
 956 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
 957
 958 const struct req_format RQF_MDS_GETATTR_NAME =
 959         DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
 960                         mds_getattr_name_client, mds_getattr_server);
 961 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
 962
 963 const struct req_format RQF_MDS_REINT =
 964         DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
 965 EXPORT_SYMBOL(RQF_MDS_REINT);
 966
 967 const struct req_format RQF_MDS_REINT_CREATE =
 968         DEFINE_REQ_FMT0("MDS_REINT_CREATE",
 969                         mds_reint_create_client, mdt_body_capa);
 970 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
 971
 972 const struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
 973         DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
 974                         mds_reint_create_rmt_acl_client, mdt_body_capa);
 975 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
 976
 977 const struct req_format RQF_MDS_REINT_CREATE_SLAVE =
 978         DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
 979                         mds_reint_create_slave_client, mdt_body_capa);
 980 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
 981
 982 const struct req_format RQF_MDS_REINT_CREATE_SYM =
 983         DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
 984                         mds_reint_create_sym_client, mdt_body_capa);
 985 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
 986
 987 const struct req_format RQF_MDS_REINT_OPEN =
 988         DEFINE_REQ_FMT0("MDS_REINT_OPEN",
 989                         mds_reint_open_client, mds_reint_open_server);
 990 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
 991
 992 const struct req_format RQF_MDS_REINT_UNLINK =
 993         DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
 994                         mds_last_unlink_server);
 995 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
 996
 997 const struct req_format RQF_MDS_REINT_LINK =
 998         DEFINE_REQ_FMT0("MDS_REINT_LINK",
 999                         mds_reint_link_client, mdt_body_only);
1000 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1001
1002 const struct req_format RQF_MDS_REINT_RENAME =
1003         DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1004                         mds_last_unlink_server);
1005 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1006
1007 const struct req_format RQF_MDS_REINT_SETATTR =
1008         DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1009                         mds_reint_setattr_client, mds_setattr_server);
1010 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1011
1012 const struct req_format RQF_MDS_REINT_SETXATTR =
1013         DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1014                         mds_reint_setxattr_client, mdt_body_only);
1015 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1016
1017 const struct req_format RQF_MDS_CONNECT =
1018         DEFINE_REQ_FMT0("MDS_CONNECT",
1019                         obd_connect_client, obd_connect_server);
1020 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1021
1022 const struct req_format RQF_MDS_DISCONNECT =
1023         DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1024 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1025
1026 const struct req_format RQF_MDS_SET_INFO =
1027         DEFINE_REQ_FMT0("MDS_SET_INFO", mds_set_info_client, empty);
1028 EXPORT_SYMBOL(RQF_MDS_SET_INFO);
1029
1030 const struct req_format RQF_LDLM_ENQUEUE =
1031         DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1032                         ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1033 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1034
1035 const struct req_format RQF_LDLM_ENQUEUE_LVB =
1036         DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1037                         ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1038 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1039
1040 const struct req_format RQF_LDLM_CONVERT =
1041         DEFINE_REQ_FMT0("LDLM_CONVERT",
1042                         ldlm_enqueue_client, ldlm_enqueue_server);
1043 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1044
1045 const struct req_format RQF_LDLM_CANCEL =
1046         DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1047 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1048
1049 const struct req_format RQF_LDLM_CALLBACK =
1050         DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1051 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1052
1053 const struct req_format RQF_LDLM_CP_CALLBACK =
1054         DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1055 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1056
1057 const struct req_format RQF_LDLM_BL_CALLBACK =
1058         DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1059 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1060
1061 const struct req_format RQF_LDLM_GL_CALLBACK =
1062         DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1063                         ldlm_gl_callback_server);
1064 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1065
1066 const struct req_format RQF_LDLM_INTENT =
1067         DEFINE_REQ_FMT0("LDLM_INTENT",
1068                         ldlm_intent_client, ldlm_intent_server);
1069 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1070
1071 const struct req_format RQF_LDLM_INTENT_GETATTR =
1072         DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1073                         ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1074 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1075
1076 const struct req_format RQF_LDLM_INTENT_OPEN =
1077         DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1078                         ldlm_intent_open_client, ldlm_intent_open_server);
1079 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1080
1081 const struct req_format RQF_LDLM_INTENT_CREATE =
1082         DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1083                         ldlm_intent_create_client, ldlm_intent_getattr_server);
1084 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1085
1086 const struct req_format RQF_LDLM_INTENT_UNLINK =
1087         DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1088                         ldlm_intent_unlink_client, ldlm_intent_server);
1089 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1090
1091 const struct req_format RQF_MDS_CLOSE =
1092         DEFINE_REQ_FMT0("MDS_CLOSE",
1093                         mdt_close_client, mds_last_unlink_server);
1094 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1095
1096 const struct req_format RQF_MDS_PIN =
1097         DEFINE_REQ_FMT0("MDS_PIN",
1098                         mdt_body_capa, mdt_body_only);
1099 EXPORT_SYMBOL(RQF_MDS_PIN);
1100
1101 const struct req_format RQF_MDS_UNPIN =
1102         DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1103 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1104
1105 const struct req_format RQF_MDS_DONE_WRITING =
1106         DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1107                         mdt_close_client, mdt_body_only);
1108 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1109
1110 const struct req_format RQF_MDS_READPAGE =
1111         DEFINE_REQ_FMT0("MDS_READPAGE",
1112                         mdt_body_capa, mdt_body_only);
1113 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1114
1115 /* This is for split */
1116 const struct req_format RQF_MDS_WRITEPAGE =
1117         DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1118                         mdt_body_capa, mdt_body_only);
1119 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1120
1121 const struct req_format RQF_MDS_IS_SUBDIR =
1122         DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1123                         mdt_body_only, mdt_body_only);
1124 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1125
1126 const struct req_format RQF_LLOG_CATINFO =
1127         DEFINE_REQ_FMT0("LLOG_CATINFO",
1128                         llog_catinfo_client, llog_catinfo_server);
1129 EXPORT_SYMBOL(RQF_LLOG_CATINFO);
1130
1131 const struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1132         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1133                         llog_origin_handle_create_client, llogd_body_only);
1134 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1135
1136 const struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1137         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1138                         llogd_body_only, llogd_body_only);
1139 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1140
1141 const struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1142         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1143                         llogd_body_only, llog_origin_handle_next_block_server);
1144 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1145
1146 const struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1147         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1148                         llogd_body_only, llog_origin_handle_next_block_server);
1149 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1150
1151 const struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1152         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1153                         llogd_body_only, llog_log_hdr_only);
1154 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1155
1156 const struct req_format RQF_LLOG_ORIGIN_CONNECT =
1157         DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1158 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1159
1160 const struct req_format RQF_OST_CONNECT =
1161         DEFINE_REQ_FMT0("OST_CONNECT",
1162                         obd_connect_client, obd_connect_server);
1163 EXPORT_SYMBOL(RQF_OST_CONNECT);
1164
1165 const struct req_format RQF_OST_DISCONNECT =
1166         DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1167 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1168
1169 const struct req_format RQF_OST_GETATTR =
1170         DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1171 EXPORT_SYMBOL(RQF_OST_GETATTR);
1172
1173 const struct req_format RQF_OST_SETATTR =
1174         DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1175 EXPORT_SYMBOL(RQF_OST_SETATTR);
1176
1177 const struct req_format RQF_OST_CREATE =
1178         DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1179 EXPORT_SYMBOL(RQF_OST_CREATE);
1180
1181 const struct req_format RQF_OST_PUNCH =
1182         DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1183 EXPORT_SYMBOL(RQF_OST_PUNCH);
1184
1185 const struct req_format RQF_OST_SYNC =
1186         DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1187 EXPORT_SYMBOL(RQF_OST_SYNC);
1188
1189 const struct req_format RQF_OST_DESTROY =
1190         DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1191 EXPORT_SYMBOL(RQF_OST_DESTROY);
1192
1193 const struct req_format RQF_OST_BRW =
1194         DEFINE_REQ_FMT0("OST_BRW", ost_brw_client, ost_brw_server);
1195 EXPORT_SYMBOL(RQF_OST_BRW);
1196
1197 const struct req_format RQF_OST_STATFS =
1198         DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1199 EXPORT_SYMBOL(RQF_OST_STATFS);
1200
1201 const struct req_format RQF_OST_SET_INFO =
1202         DEFINE_REQ_FMT0("OST_SET_INFO", ost_set_info_client, empty);
1203 EXPORT_SYMBOL(RQF_OST_SET_INFO);
1204
1205 const struct req_format RQF_OST_GET_INFO_GENERIC =
1206         DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1207                                         ost_get_info_generic_server);
1208 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1209
1210 const struct req_format RQF_OST_GET_INFO_LAST_ID =
1211         DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1212                                                 ost_get_last_id_server);
1213 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1214
1215 const struct req_format RQF_OST_GET_INFO_FIEMAP =
1216         DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1217                                                ost_get_fiemap_server);
1218 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1219
1220
1221 #if !defined(__REQ_LAYOUT_USER__)
1222
1223 int req_layout_init(void)
1224 {
1225         int i;
1226         int j;
1227         int k;
1228
1229         for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1230                 struct req_format *rf;
1231
1232                 rf = (struct req_format *)req_formats[i];
1233                 rf->rf_idx = i;
1234                 for (j = 0; j < RCL_NR; ++j) {
1235                         LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1236                         for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1237                                 struct req_msg_field *field;
1238
1239                                 field = (typeof(field))rf->rf_fields[j].d[k];
1240                                 LASSERT(field->rmf_offset[i][j] == 0);
1241                                 /*
1242                                  * k + 1 to detect unused format/field
1243                                  * combinations.
1244                                  */
1245                                 field->rmf_offset[i][j] = k + 1;
1246                         }
1247                 }
1248         }
1249         return 0;
1250 }
1251 EXPORT_SYMBOL(req_layout_init);
1252
1253 void req_layout_fini(void)
1254 {
1255 }
1256 EXPORT_SYMBOL(req_layout_fini);
1257
1258 void req_capsule_init_area(struct req_capsule *pill)
1259 {
1260         int i;
1261
1262         for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1263                 pill->rc_area[RCL_CLIENT][i] = -1;
1264                 pill->rc_area[RCL_SERVER][i] = -1;
1265         }
1266 }
1267 EXPORT_SYMBOL(req_capsule_init_area);
1268
1269 /*
1270  * Initialize capsule.
1271  *
1272  * @area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1273  * variable-sized fields.
1274  */
1275 void req_capsule_init(struct req_capsule *pill,
1276                       struct ptlrpc_request *req,
1277                       enum req_location location)
1278 {
1279         LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1280
1281         memset(pill, 0, sizeof *pill);
1282         pill->rc_req = req;
1283         pill->rc_loc = location;
1284         req_capsule_init_area(pill);
1285 }
1286 EXPORT_SYMBOL(req_capsule_init);
1287
1288 void req_capsule_fini(struct req_capsule *pill)
1289 {
1290 }
1291 EXPORT_SYMBOL(req_capsule_fini);
1292
1293 static int __req_format_is_sane(const struct req_format *fmt)
1294 {
1295         return
1296                 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1297                 req_formats[fmt->rf_idx] == fmt;
1298 }
1299
1300 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1301                                     enum req_location loc)
1302 {
1303         struct ptlrpc_request *req;
1304
1305         req = pill->rc_req;
1306         return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1307 }
1308
1309 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1310 {
1311         LASSERT(pill->rc_fmt == NULL);
1312         LASSERT(__req_format_is_sane(fmt));
1313
1314         pill->rc_fmt = fmt;
1315 }
1316 EXPORT_SYMBOL(req_capsule_set);
1317
1318 int req_capsule_filled_sizes(struct req_capsule *pill,
1319                            enum req_location loc)
1320 {
1321         const struct req_format *fmt = pill->rc_fmt;
1322         int                      i;
1323
1324         LASSERT(fmt != NULL);
1325
1326         for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1327                 if (pill->rc_area[loc][i] == -1) {
1328                         pill->rc_area[loc][i] =
1329                                             fmt->rf_fields[loc].d[i]->rmf_size;
1330                         if (pill->rc_area[loc][i] == -1) {
1331                                 /* skip the following fields */
1332                                 LASSERT(loc != RCL_SERVER);
1333                                 break;
1334                         }
1335                 }
1336         }
1337         return i;
1338 }
1339 EXPORT_SYMBOL(req_capsule_filled_sizes);
1340
1341 int req_capsule_server_pack(struct req_capsule *pill)
1342 {
1343         const struct req_format *fmt;
1344         int                      count;
1345         int                      rc;
1346
1347         LASSERT(pill->rc_loc == RCL_SERVER);
1348         fmt = pill->rc_fmt;
1349         LASSERT(fmt != NULL);
1350
1351         count = req_capsule_filled_sizes(pill, RCL_SERVER);
1352         rc = lustre_pack_reply(pill->rc_req, count,
1353                                pill->rc_area[RCL_SERVER], NULL);
1354         if (rc != 0) {
1355                 DEBUG_REQ(D_ERROR, pill->rc_req,
1356                           "Cannot pack %d fields in format `%s': ",
1357                           count, fmt->rf_name);
1358         }
1359         return rc;
1360 }
1361 EXPORT_SYMBOL(req_capsule_server_pack);
1362
1363 static int __req_capsule_offset(const struct req_capsule *pill,
1364                                 const struct req_msg_field *field,
1365                                 enum req_location loc)
1366 {
1367         int offset;
1368
1369         offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1370         LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1371                             pill->rc_fmt->rf_name,
1372                             field->rmf_name, offset, loc);
1373         offset --;
1374         LASSERT(0 <= offset && offset < (sizeof(pill->rc_swabbed) << 3));
1375         return offset;
1376 }
1377
1378 static void *__req_capsule_get(struct req_capsule *pill,
1379                                const struct req_msg_field *field,
1380                                enum req_location loc,
1381                                void (*swabber)( void *))
1382 {
1383         const struct req_format *fmt;
1384         struct lustre_msg       *msg;
1385         void                    *value;
1386         int                      len;
1387         int                      offset;
1388
1389         void *(*getter)(struct lustre_msg *m, int n, int minlen);
1390
1391         static const char *rcl_names[RCL_NR] = {
1392                 [RCL_CLIENT] = "client",
1393                 [RCL_SERVER] = "server"
1394         };
1395
1396         LASSERT(pill != NULL);
1397         LASSERT(pill != LP_POISON);
1398         fmt = pill->rc_fmt;
1399         LASSERT(fmt != NULL);
1400         LASSERT(fmt != LP_POISON);
1401         LASSERT(__req_format_is_sane(fmt));
1402
1403         offset = __req_capsule_offset(pill, field, loc);
1404
1405         msg = __req_msg(pill, loc);
1406         LASSERT(msg != NULL);
1407
1408         getter = (field->rmf_flags & RMF_F_STRING) ?
1409                 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1410
1411         if (pill->rc_area[loc][offset] != -1)
1412                 len = pill->rc_area[loc][offset];
1413         else
1414                 len = max(field->rmf_size, 0);
1415         value = getter(msg, offset, len);
1416
1417         swabber = swabber ?: field->rmf_swabber;
1418         if (!(pill->rc_swabbed & (1 << offset)) && loc != pill->rc_loc &&
1419             swabber != NULL && value != NULL &&
1420             lustre_msg_swabbed(msg)) {
1421                 swabber(value);
1422                 pill->rc_swabbed |= (1 << offset);
1423         }
1424         if (value == NULL) {
1425                 DEBUG_REQ(D_ERROR, pill->rc_req,
1426                           "Wrong buffer for field `%s' (%d of %d) "
1427                           "in format `%s': %d vs. %d (%s)\n",
1428                           field->rmf_name, offset, lustre_msg_bufcount(msg), fmt->rf_name,
1429                           lustre_msg_buflen(msg, offset), len,
1430                           rcl_names[loc]);
1431         }
1432
1433         return value;
1434 }
1435
1436 void *req_capsule_client_get(struct req_capsule *pill,
1437                              const struct req_msg_field *field)
1438 {
1439         return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1440 }
1441 EXPORT_SYMBOL(req_capsule_client_get);
1442
1443 void *req_capsule_client_swab_get(struct req_capsule *pill,
1444                                   const struct req_msg_field *field,
1445                                   void (*swabber)(void* ))
1446 {
1447         return __req_capsule_get(pill, field, RCL_CLIENT, swabber);
1448 }
1449 EXPORT_SYMBOL(req_capsule_client_swab_get);
1450
1451 void *req_capsule_client_sized_get(struct req_capsule *pill,
1452                                    const struct req_msg_field *field,
1453                                    int len)
1454 {
1455         req_capsule_set_size(pill, field, RCL_CLIENT, len);
1456         return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1457 }
1458 EXPORT_SYMBOL(req_capsule_client_sized_get);
1459
1460 void *req_capsule_server_get(struct req_capsule *pill,
1461                              const struct req_msg_field *field)
1462 {
1463         return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1464 }
1465 EXPORT_SYMBOL(req_capsule_server_get);
1466
1467 void *req_capsule_server_swab_get(struct req_capsule *pill,
1468                                   const struct req_msg_field *field,
1469                                   void *swabber)
1470 {
1471         return __req_capsule_get(pill, field, RCL_SERVER, swabber);
1472 }
1473 EXPORT_SYMBOL(req_capsule_server_swab_get);
1474
1475
1476 void *req_capsule_server_sized_get(struct req_capsule *pill,
1477                                    const struct req_msg_field *field,
1478                                    int len)
1479 {
1480         req_capsule_set_size(pill, field, RCL_SERVER, len);
1481         return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1482 }
1483 EXPORT_SYMBOL(req_capsule_server_sized_get);
1484
1485 const void *req_capsule_other_get(struct req_capsule *pill,
1486                                   const struct req_msg_field *field)
1487 {
1488         return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL);
1489 }
1490 EXPORT_SYMBOL(req_capsule_other_get);
1491
1492 void req_capsule_set_size(struct req_capsule *pill,
1493                           const struct req_msg_field *field,
1494                           enum req_location loc, int size)
1495 {
1496         LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1497
1498         pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1499 }
1500 EXPORT_SYMBOL(req_capsule_set_size);
1501
1502 /* NB: this function doesn't correspond with req_capsule_set_size(), which
1503  * actually sets the size in pill.rc_area[loc][offset], but this function
1504  * returns the message buflen[offset], maybe we should use another name.
1505  */
1506 int req_capsule_get_size(const struct req_capsule *pill,
1507                          const struct req_msg_field *field,
1508                          enum req_location loc)
1509 {
1510         LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1511
1512         return lustre_msg_buflen(__req_msg(pill, loc),
1513                                  __req_capsule_offset(pill, field, loc));
1514 }
1515 EXPORT_SYMBOL(req_capsule_get_size);
1516
1517 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1518 {
1519         return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1520                                pill->rc_fmt->rf_fields[loc].nr,
1521                                pill->rc_area[loc]);
1522 }
1523
1524 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
1525                          enum req_location loc)
1526 {
1527         int size, i = 0;
1528
1529         size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
1530         if (size < 0)
1531                 return size;
1532
1533         for (; i < fmt->rf_fields[loc].nr; ++i)
1534                 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
1535                         size += size_round(fmt->rf_fields[loc].d[i]->rmf_size);
1536         return size;
1537 }
1538
1539 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1540
1541 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
1542 {
1543         int i;
1544         int j;
1545
1546         const struct req_format *old;
1547
1548         LASSERT(pill->rc_fmt != NULL);
1549         LASSERT(__req_format_is_sane(fmt));
1550
1551         old = pill->rc_fmt;
1552         /*
1553          * Sanity checking...
1554          */
1555         for (i = 0; i < RCL_NR; ++i) {
1556                 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
1557                 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
1558                         LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
1559                 }
1560                 /*
1561                  * Last field in old format can be shorter than in new.
1562                  */
1563                 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
1564                         FMT_FIELD(old, i, j)->rmf_size);
1565         }
1566         /* last field should be returned to the unswabbed state */
1567         pill->rc_swabbed &= ~(__u32)(1 << j);
1568         pill->rc_fmt = fmt;
1569 }
1570 EXPORT_SYMBOL(req_capsule_extend);
1571
1572 int req_capsule_has_field(const struct req_capsule *pill,
1573                           const struct req_msg_field *field,
1574                           enum req_location loc)
1575 {
1576         LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1577
1578         return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1579 }
1580 EXPORT_SYMBOL(req_capsule_has_field);
1581
1582 int req_capsule_field_present(const struct req_capsule *pill,
1583                               const struct req_msg_field *field,
1584                               enum req_location loc)
1585 {
1586         int offset;
1587
1588         LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1589         LASSERT(req_capsule_has_field(pill, field, loc));
1590
1591         offset = __req_capsule_offset(pill, field, loc);
1592         return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
1593 }
1594 EXPORT_SYMBOL(req_capsule_field_present);
1595
1596 void req_capsule_shrink(struct req_capsule *pill,
1597                         const struct req_msg_field *field,
1598                         unsigned int newlen,
1599                         enum req_location loc)
1600 {
1601         const struct req_format *fmt;
1602         struct lustre_msg       *msg;
1603         int                      len;
1604         int                      offset;
1605
1606         fmt = pill->rc_fmt;
1607         LASSERT(fmt != NULL);
1608         LASSERT(__req_format_is_sane(fmt));
1609         LASSERT(req_capsule_has_field(pill, field, loc));
1610         LASSERT(req_capsule_field_present(pill, field, loc));
1611
1612         offset = __req_capsule_offset(pill, field, loc);
1613
1614         msg = __req_msg(pill, loc);
1615         len = lustre_msg_buflen(msg, offset);
1616         LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
1617                                 fmt->rf_name, field->rmf_name, len, newlen);
1618
1619         if (loc == RCL_CLIENT)
1620                 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
1621                                                             1);
1622         else
1623                 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
1624                                                             1);
1625 }
1626 EXPORT_SYMBOL(req_capsule_shrink);
1627
1628 /* __REQ_LAYOUT_USER__ */
1629 #endif