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_SET_GRANT_INFO,
 578         &RQF_OST_GET_INFO_GENERIC,
 579         &RQF_OST_GET_INFO_LAST_ID,
 580         &RQF_OST_GET_INFO_FIEMAP,
 581         &RQF_LDLM_ENQUEUE,
 582         &RQF_LDLM_ENQUEUE_LVB,
 583         &RQF_LDLM_CONVERT,
 584         &RQF_LDLM_CANCEL,
 585         &RQF_LDLM_CALLBACK,
 586         &RQF_LDLM_CP_CALLBACK,
 587         &RQF_LDLM_BL_CALLBACK,
 588         &RQF_LDLM_GL_CALLBACK,
 589         &RQF_LDLM_INTENT,
 590         &RQF_LDLM_INTENT_GETATTR,
 591         &RQF_LDLM_INTENT_OPEN,
 592         &RQF_LDLM_INTENT_CREATE,
 593         &RQF_LDLM_INTENT_UNLINK,
 594         &RQF_LOG_CANCEL,
 595         &RQF_LLOG_CATINFO,
 596         &RQF_LLOG_ORIGIN_HANDLE_CREATE,
 597         &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
 598         &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
 599         &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
 600         &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
 601         &RQF_LLOG_ORIGIN_CONNECT
 602 };
 603
 604 struct req_msg_field {
 605         __u32       rmf_flags;
 606         const char *rmf_name;
 607         /**
 608          * Field length. (-1) means "variable length".
 609          */
 610         int         rmf_size;
 611         void      (*rmf_swabber)(void *);
 612         int         rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
 613 };
 614
 615 enum rmf_flags {
 616         RMF_F_STRING = 1 << 0
 617 };
 618
 619 struct req_capsule;
 620
 621 /*
 622  * Request fields.
 623  */
 624 #define DEFINE_MSGF(name, flags, size, swabber) {       \
 625         .rmf_name    = (name),                          \
 626         .rmf_flags   = (flags),                         \
 627         .rmf_size    = (size),                          \
 628         .rmf_swabber = (void (*)(void*))(swabber)       \
 629 }
 630
 631 const struct req_msg_field RMF_GENERIC_DATA =
 632         DEFINE_MSGF("generic_data", 0,
 633                     -1, NULL);
 634 EXPORT_SYMBOL(RMF_GENERIC_DATA);
 635
 636 const struct req_msg_field RMF_MGS_TARGET_INFO =
 637         DEFINE_MSGF("mgs_target_info", 0,
 638                     sizeof(struct mgs_target_info),
 639                     lustre_swab_mgs_target_info);
 640 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
 641
 642 const struct req_msg_field RMF_MGS_SEND_PARAM =
 643         DEFINE_MSGF("mgs_send_param", 0,
 644                     sizeof(struct mgs_send_param),
 645                     NULL);
 646 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
 647
 648 const struct req_msg_field RMF_SETINFO_VAL =
 649         DEFINE_MSGF("setinfo_val", 0,
 650                     sizeof(__u32), lustre_swab_generic_32s);
 651 EXPORT_SYMBOL(RMF_SETINFO_VAL);
 652
 653 const struct req_msg_field RMF_SEQ_OPC =
 654         DEFINE_MSGF("seq_query_opc", 0,
 655                     sizeof(__u32), lustre_swab_generic_32s);
 656 EXPORT_SYMBOL(RMF_SEQ_OPC);
 657
 658 const struct req_msg_field RMF_SEQ_RANGE =
 659         DEFINE_MSGF("seq_query_range", 0,
 660                     sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
 661 EXPORT_SYMBOL(RMF_SEQ_RANGE);
 662
 663 const struct req_msg_field RMF_FLD_OPC =
 664         DEFINE_MSGF("fld_query_opc", 0,
 665                     sizeof(__u32), lustre_swab_generic_32s);
 666 EXPORT_SYMBOL(RMF_FLD_OPC);
 667
 668 const struct req_msg_field RMF_FLD_MDFLD =
 669         DEFINE_MSGF("fld_query_mdfld", 0,
 670                     sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
 671 EXPORT_SYMBOL(RMF_FLD_MDFLD);
 672
 673 const struct req_msg_field RMF_MDT_BODY =
 674         DEFINE_MSGF("mdt_body", 0,
 675                     sizeof(struct mdt_body), lustre_swab_mdt_body);
 676 EXPORT_SYMBOL(RMF_MDT_BODY);
 677
 678 const struct req_msg_field RMF_OBD_QUOTACTL =
 679         DEFINE_MSGF("obd_quotactl", 0,
 680                     sizeof(struct obd_quotactl), lustre_swab_obd_quotactl);
 681 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
 682
 683 const struct req_msg_field RMF_QUOTA_ADJUST_QUNIT =
 684         DEFINE_MSGF("quota_adjust_qunit", 0,
 685                     sizeof(struct quota_adjust_qunit),
 686                     lustre_swab_quota_adjust_qunit);
 687 EXPORT_SYMBOL(RMF_QUOTA_ADJUST_QUNIT);
 688
 689 const struct req_msg_field RMF_QUNIT_DATA =
 690         DEFINE_MSGF("qunit_data", 0,
 691                     sizeof(struct qunit_data), NULL);
 692 EXPORT_SYMBOL(RMF_QUNIT_DATA);
 693
 694 const struct req_msg_field RMF_MDT_EPOCH =
 695         DEFINE_MSGF("mdt_epoch", 0,
 696                     sizeof(struct mdt_epoch), lustre_swab_mdt_epoch);
 697 EXPORT_SYMBOL(RMF_MDT_EPOCH);
 698
 699 const struct req_msg_field RMF_PTLRPC_BODY =
 700         DEFINE_MSGF("ptlrpc_body", 0,
 701                     sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body);
 702 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
 703
 704 const struct req_msg_field RMF_OBD_STATFS =
 705         DEFINE_MSGF("obd_statfs", 0,
 706                     sizeof(struct obd_statfs), lustre_swab_obd_statfs);
 707 EXPORT_SYMBOL(RMF_OBD_STATFS);
 708
 709 const struct req_msg_field RMF_SETINFO_KEY =
 710         DEFINE_MSGF("setinfo_key", 0, -1, NULL);
 711 EXPORT_SYMBOL(RMF_SETINFO_KEY);
 712
 713 const struct req_msg_field RMF_NAME =
 714         DEFINE_MSGF("name", RMF_F_STRING, -1, NULL);
 715 EXPORT_SYMBOL(RMF_NAME);
 716
 717 const struct req_msg_field RMF_SYMTGT =
 718         DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL);
 719 EXPORT_SYMBOL(RMF_SYMTGT);
 720
 721 const struct req_msg_field RMF_TGTUUID =
 722         DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
 723 EXPORT_SYMBOL(RMF_TGTUUID);
 724
 725 const struct req_msg_field RMF_CLUUID =
 726         DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
 727 EXPORT_SYMBOL(RMF_CLUUID);
 728
 729 const struct req_msg_field RMF_STRING =
 730         DEFINE_MSGF("string", RMF_F_STRING, -1, NULL);
 731 EXPORT_SYMBOL(RMF_STRING);
 732
 733 const struct req_msg_field RMF_LLOGD_BODY =
 734         DEFINE_MSGF("llogd_body", 0,
 735                     sizeof(struct llogd_body), lustre_swab_llogd_body);
 736 EXPORT_SYMBOL(RMF_LLOGD_BODY);
 737
 738 const struct req_msg_field RMF_LLOG_LOG_HDR =
 739         DEFINE_MSGF("llog_log_hdr", 0,
 740                     sizeof(struct llog_log_hdr), lustre_swab_llog_hdr);
 741 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
 742
 743 const struct req_msg_field RMF_LLOGD_CONN_BODY =
 744         DEFINE_MSGF("llogd_conn_body", 0,
 745                     sizeof(struct llogd_conn_body),
 746                     lustre_swab_llogd_conn_body);
 747 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
 748
 749 /*
 750  * connection handle received in MDS_CONNECT request.
 751  *
 752  * XXX no swabbing?
 753  */
 754 const struct req_msg_field RMF_CONN =
 755         DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL);
 756 EXPORT_SYMBOL(RMF_CONN);
 757
 758 const struct req_msg_field RMF_CONNECT_DATA =
 759         DEFINE_MSGF("cdata", 0,
 760                     sizeof(struct obd_connect_data), lustre_swab_connect);
 761 EXPORT_SYMBOL(RMF_CONNECT_DATA);
 762
 763 const struct req_msg_field RMF_DLM_REQ =
 764         DEFINE_MSGF("dlm_req", 0,
 765                     sizeof(struct ldlm_request), lustre_swab_ldlm_request);
 766 EXPORT_SYMBOL(RMF_DLM_REQ);
 767
 768 const struct req_msg_field RMF_DLM_REP =
 769         DEFINE_MSGF("dlm_rep", 0,
 770                     sizeof(struct ldlm_reply), lustre_swab_ldlm_reply);
 771 EXPORT_SYMBOL(RMF_DLM_REP);
 772
 773 const struct req_msg_field RMF_LDLM_INTENT =
 774         DEFINE_MSGF("ldlm_intent", 0,
 775                     sizeof(struct ldlm_intent), lustre_swab_ldlm_intent);
 776 EXPORT_SYMBOL(RMF_LDLM_INTENT);
 777
 778 const struct req_msg_field RMF_DLM_LVB =
 779         DEFINE_MSGF("dlm_lvb", 0, sizeof(struct ost_lvb), NULL);
 780 EXPORT_SYMBOL(RMF_DLM_LVB);
 781
 782 const struct req_msg_field RMF_MDT_MD =
 783         DEFINE_MSGF("mdt_md", 0, MIN_MD_SIZE, NULL);
 784 EXPORT_SYMBOL(RMF_MDT_MD);
 785
 786 const struct req_msg_field RMF_REC_REINT =
 787         DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
 788                     lustre_swab_mdt_rec_reint);
 789 EXPORT_SYMBOL(RMF_REC_REINT);
 790
 791 const struct req_msg_field RMF_REC_JOINFILE =
 792         DEFINE_MSGF("rec_joinfile", 0, sizeof(struct mdt_rec_join),
 793                     lustre_swab_mdt_rec_join);
 794 EXPORT_SYMBOL(RMF_REC_JOINFILE);
 795
 796 /* FIXME: this length should be defined as a macro */
 797 const struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1, NULL);
 798 EXPORT_SYMBOL(RMF_EADATA);
 799
 800 const struct req_msg_field RMF_ACL =
 801         DEFINE_MSGF("acl", 0, LUSTRE_POSIX_ACL_MAX_SIZE, NULL);
 802 EXPORT_SYMBOL(RMF_ACL);
 803
 804 const struct req_msg_field RMF_LOGCOOKIES =
 805         DEFINE_MSGF("logcookies", 0, sizeof(struct llog_cookie), NULL);
 806 EXPORT_SYMBOL(RMF_LOGCOOKIES);
 807
 808 const struct req_msg_field RMF_CAPA1 =
 809         DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
 810                     lustre_swab_lustre_capa);
 811 EXPORT_SYMBOL(RMF_CAPA1);
 812
 813 const struct req_msg_field RMF_CAPA2 =
 814         DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
 815                     lustre_swab_lustre_capa);
 816 EXPORT_SYMBOL(RMF_CAPA2);
 817
 818 /*
 819  * OST request field.
 820  */
 821 const struct req_msg_field RMF_OST_BODY =
 822         DEFINE_MSGF("ost_body", 0,
 823                     sizeof(struct ost_body), lustre_swab_ost_body);
 824 EXPORT_SYMBOL(RMF_OST_BODY);
 825
 826 const struct req_msg_field RMF_OBD_IOOBJ =
 827         DEFINE_MSGF("obd_ioobj", 0,
 828                     sizeof(struct obd_ioobj), lustre_swab_obd_ioobj);
 829 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
 830
 831 const struct req_msg_field RMF_NIOBUF_REMOTE =
 832         DEFINE_MSGF("niobuf_remote", 0, -1, lustre_swab_niobuf_remote);
 833 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
 834
 835 const struct req_msg_field RMF_OBD_ID =
 836         DEFINE_MSGF("obd_id", 0,
 837                     sizeof(obd_id), lustre_swab_ost_last_id);
 838 EXPORT_SYMBOL(RMF_OBD_ID);
 839
 840 const struct req_msg_field RMF_FIEMAP_KEY =
 841         DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
 842                     lustre_swab_fiemap);
 843 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
 844
 845 const struct req_msg_field RMF_FIEMAP_VAL =
 846         DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap);
 847 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
 848
 849 /*
 850  * Request formats.
 851  */
 852
 853 struct req_format {
 854         const char *rf_name;
 855         int         rf_idx;
 856         struct {
 857                 int                          nr;
 858                 const struct req_msg_field **d;
 859         } rf_fields[RCL_NR];
 860 };
 861
 862 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) {    \
 863         .rf_name   = name,                                              \
 864         .rf_fields = {                                                  \
 865                 [RCL_CLIENT] = {                                        \
 866                         .nr = client_nr,                                \
 867                         .d  = client                                    \
 868                 },                                                      \
 869                 [RCL_SERVER] = {                                        \
 870                         .nr = server_nr,                                \
 871                         .d  = server                                    \
 872                 }                                                       \
 873         }                                                               \
 874 }
 875
 876 #define DEFINE_REQ_FMT0(name, client, server)                                  \
 877 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
 878
 879 const struct req_format RQF_OBD_PING =
 880         DEFINE_REQ_FMT0("OBD_PING", empty, empty);
 881 EXPORT_SYMBOL(RQF_OBD_PING);
 882
 883 const struct req_format RQF_SEC_CTX =
 884         DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
 885 EXPORT_SYMBOL(RQF_SEC_CTX);
 886
 887 const struct req_format RQF_MGS_TARGET_REG =
 888         DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
 889                          mgs_target_info_only);
 890 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
 891
 892 const struct req_format RQF_MGS_SET_INFO =
 893         DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
 894                          mgs_set_info);
 895 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
 896
 897 const struct req_format RQF_SEQ_QUERY =
 898         DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
 899 EXPORT_SYMBOL(RQF_SEQ_QUERY);
 900
 901 const struct req_format RQF_FLD_QUERY =
 902         DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
 903 EXPORT_SYMBOL(RQF_FLD_QUERY);
 904
 905 const struct req_format RQF_LOG_CANCEL =
 906         DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
 907 EXPORT_SYMBOL(RQF_LOG_CANCEL);
 908
 909 const struct req_format RQF_MDS_QUOTACHECK =
 910         DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
 911 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
 912
 913 const struct req_format RQF_OST_QUOTACHECK =
 914         DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
 915 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
 916
 917 const struct req_format RQF_MDS_QUOTACTL =
 918         DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
 919 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
 920
 921 const struct req_format RQF_OST_QUOTACTL =
 922         DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
 923 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
 924
 925 const struct req_format RQF_OST_QUOTA_ADJUST_QUNIT =
 926         DEFINE_REQ_FMT0("OST_QUOTA_ADJUST_QUNIT", quota_adjust_qunit_only,
 927                         quota_adjust_qunit_only);
 928 EXPORT_SYMBOL(RQF_OST_QUOTA_ADJUST_QUNIT);
 929
 930 const struct req_format RQF_QC_CALLBACK =
 931         DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
 932 EXPORT_SYMBOL(RQF_QC_CALLBACK);
 933
 934 const struct req_format RQF_MDS_QUOTA_DQACQ =
 935         DEFINE_REQ_FMT0("MDS_QUOTA_DQACQ", qunit_data_only, qunit_data_only);
 936 EXPORT_SYMBOL(RQF_MDS_QUOTA_DQACQ);
 937
 938 const struct req_format RQF_MDS_GETSTATUS =
 939         DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
 940 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
 941
 942 const struct req_format RQF_MDS_STATFS =
 943         DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
 944 EXPORT_SYMBOL(RQF_MDS_STATFS);
 945
 946 const struct req_format RQF_MDS_SYNC =
 947         DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
 948 EXPORT_SYMBOL(RQF_MDS_SYNC);
 949
 950 const struct req_format RQF_MDS_GETATTR =
 951         DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
 952 EXPORT_SYMBOL(RQF_MDS_GETATTR);
 953
 954 const struct req_format RQF_MDS_GETXATTR =
 955         DEFINE_REQ_FMT0("MDS_GETXATTR",
 956                         mds_getxattr_client, mds_getxattr_server);
 957 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
 958
 959 const struct req_format RQF_MDS_GETATTR_NAME =
 960         DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
 961                         mds_getattr_name_client, mds_getattr_server);
 962 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
 963
 964 const struct req_format RQF_MDS_REINT =
 965         DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
 966 EXPORT_SYMBOL(RQF_MDS_REINT);
 967
 968 const struct req_format RQF_MDS_REINT_CREATE =
 969         DEFINE_REQ_FMT0("MDS_REINT_CREATE",
 970                         mds_reint_create_client, mdt_body_capa);
 971 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
 972
 973 const struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
 974         DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
 975                         mds_reint_create_rmt_acl_client, mdt_body_capa);
 976 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
 977
 978 const struct req_format RQF_MDS_REINT_CREATE_SLAVE =
 979         DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
 980                         mds_reint_create_slave_client, mdt_body_capa);
 981 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
 982
 983 const struct req_format RQF_MDS_REINT_CREATE_SYM =
 984         DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
 985                         mds_reint_create_sym_client, mdt_body_capa);
 986 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
 987
 988 const struct req_format RQF_MDS_REINT_OPEN =
 989         DEFINE_REQ_FMT0("MDS_REINT_OPEN",
 990                         mds_reint_open_client, mds_reint_open_server);
 991 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
 992
 993 const struct req_format RQF_MDS_REINT_UNLINK =
 994         DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
 995                         mds_last_unlink_server);
 996 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
 997
 998 const struct req_format RQF_MDS_REINT_LINK =
 999         DEFINE_REQ_FMT0("MDS_REINT_LINK",
1000                         mds_reint_link_client, mdt_body_only);
1001 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1002
1003 const struct req_format RQF_MDS_REINT_RENAME =
1004         DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1005                         mds_last_unlink_server);
1006 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1007
1008 const struct req_format RQF_MDS_REINT_SETATTR =
1009         DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1010                         mds_reint_setattr_client, mds_setattr_server);
1011 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1012
1013 const struct req_format RQF_MDS_REINT_SETXATTR =
1014         DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1015                         mds_reint_setxattr_client, mdt_body_only);
1016 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1017
1018 const struct req_format RQF_MDS_CONNECT =
1019         DEFINE_REQ_FMT0("MDS_CONNECT",
1020                         obd_connect_client, obd_connect_server);
1021 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1022
1023 const struct req_format RQF_MDS_DISCONNECT =
1024         DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1025 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1026
1027 const struct req_format RQF_MDS_SET_INFO =
1028         DEFINE_REQ_FMT0("MDS_SET_INFO", mds_set_info_client, empty);
1029 EXPORT_SYMBOL(RQF_MDS_SET_INFO);
1030
1031 const struct req_format RQF_LDLM_ENQUEUE =
1032         DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1033                         ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1034 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1035
1036 const struct req_format RQF_LDLM_ENQUEUE_LVB =
1037         DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1038                         ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1039 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1040
1041 const struct req_format RQF_LDLM_CONVERT =
1042         DEFINE_REQ_FMT0("LDLM_CONVERT",
1043                         ldlm_enqueue_client, ldlm_enqueue_server);
1044 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1045
1046 const struct req_format RQF_LDLM_CANCEL =
1047         DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1048 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1049
1050 const struct req_format RQF_LDLM_CALLBACK =
1051         DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1052 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1053
1054 const struct req_format RQF_LDLM_CP_CALLBACK =
1055         DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1056 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1057
1058 const struct req_format RQF_LDLM_BL_CALLBACK =
1059         DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1060 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1061
1062 const struct req_format RQF_LDLM_GL_CALLBACK =
1063         DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1064                         ldlm_gl_callback_server);
1065 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1066
1067 const struct req_format RQF_LDLM_INTENT =
1068         DEFINE_REQ_FMT0("LDLM_INTENT",
1069                         ldlm_intent_client, ldlm_intent_server);
1070 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1071
1072 const struct req_format RQF_LDLM_INTENT_GETATTR =
1073         DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1074                         ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1075 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1076
1077 const struct req_format RQF_LDLM_INTENT_OPEN =
1078         DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1079                         ldlm_intent_open_client, ldlm_intent_open_server);
1080 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1081
1082 const struct req_format RQF_LDLM_INTENT_CREATE =
1083         DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1084                         ldlm_intent_create_client, ldlm_intent_getattr_server);
1085 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1086
1087 const struct req_format RQF_LDLM_INTENT_UNLINK =
1088         DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1089                         ldlm_intent_unlink_client, ldlm_intent_server);
1090 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1091
1092 const struct req_format RQF_MDS_CLOSE =
1093         DEFINE_REQ_FMT0("MDS_CLOSE",
1094                         mdt_close_client, mds_last_unlink_server);
1095 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1096
1097 const struct req_format RQF_MDS_PIN =
1098         DEFINE_REQ_FMT0("MDS_PIN",
1099                         mdt_body_capa, mdt_body_only);
1100 EXPORT_SYMBOL(RQF_MDS_PIN);
1101
1102 const struct req_format RQF_MDS_UNPIN =
1103         DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1104 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1105
1106 const struct req_format RQF_MDS_DONE_WRITING =
1107         DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1108                         mdt_close_client, mdt_body_only);
1109 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1110
1111 const struct req_format RQF_MDS_READPAGE =
1112         DEFINE_REQ_FMT0("MDS_READPAGE",
1113                         mdt_body_capa, mdt_body_only);
1114 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1115
1116 /* This is for split */
1117 const struct req_format RQF_MDS_WRITEPAGE =
1118         DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1119                         mdt_body_capa, mdt_body_only);
1120 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1121
1122 const struct req_format RQF_MDS_IS_SUBDIR =
1123         DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1124                         mdt_body_only, mdt_body_only);
1125 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1126
1127 const struct req_format RQF_LLOG_CATINFO =
1128         DEFINE_REQ_FMT0("LLOG_CATINFO",
1129                         llog_catinfo_client, llog_catinfo_server);
1130 EXPORT_SYMBOL(RQF_LLOG_CATINFO);
1131
1132 const struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1133         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1134                         llog_origin_handle_create_client, llogd_body_only);
1135 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1136
1137 const struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1138         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1139                         llogd_body_only, llogd_body_only);
1140 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1141
1142 const struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1143         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1144                         llogd_body_only, llog_origin_handle_next_block_server);
1145 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1146
1147 const struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1148         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1149                         llogd_body_only, llog_origin_handle_next_block_server);
1150 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1151
1152 const struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1153         DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1154                         llogd_body_only, llog_log_hdr_only);
1155 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1156
1157 const struct req_format RQF_LLOG_ORIGIN_CONNECT =
1158         DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1159 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1160
1161 const struct req_format RQF_OST_CONNECT =
1162         DEFINE_REQ_FMT0("OST_CONNECT",
1163                         obd_connect_client, obd_connect_server);
1164 EXPORT_SYMBOL(RQF_OST_CONNECT);
1165
1166 const struct req_format RQF_OST_DISCONNECT =
1167         DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1168 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1169
1170 const struct req_format RQF_OST_GETATTR =
1171         DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1172 EXPORT_SYMBOL(RQF_OST_GETATTR);
1173
1174 const struct req_format RQF_OST_SETATTR =
1175         DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1176 EXPORT_SYMBOL(RQF_OST_SETATTR);
1177
1178 const struct req_format RQF_OST_CREATE =
1179         DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1180 EXPORT_SYMBOL(RQF_OST_CREATE);
1181
1182 const struct req_format RQF_OST_PUNCH =
1183         DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1184 EXPORT_SYMBOL(RQF_OST_PUNCH);
1185
1186 const struct req_format RQF_OST_SYNC =
1187         DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1188 EXPORT_SYMBOL(RQF_OST_SYNC);
1189
1190 const struct req_format RQF_OST_DESTROY =
1191         DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1192 EXPORT_SYMBOL(RQF_OST_DESTROY);
1193
1194 const struct req_format RQF_OST_BRW =
1195         DEFINE_REQ_FMT0("OST_BRW", ost_brw_client, ost_brw_server);
1196 EXPORT_SYMBOL(RQF_OST_BRW);
1197
1198 const struct req_format RQF_OST_STATFS =
1199         DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1200 EXPORT_SYMBOL(RQF_OST_STATFS);
1201
1202 const struct req_format RQF_OST_SET_INFO =
1203         DEFINE_REQ_FMT0("OST_SET_INFO", ost_set_info_client, empty);
1204 EXPORT_SYMBOL(RQF_OST_SET_INFO);
1205
1206 const struct req_format RQF_OST_SET_GRANT_INFO =
1207         DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_set_info_client,
1208                          ost_body_only);
1209 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1210
1211 const struct req_format RQF_OST_GET_INFO_GENERIC =
1212         DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1213                                         ost_get_info_generic_server);
1214 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1215
1216 const struct req_format RQF_OST_GET_INFO_LAST_ID =
1217         DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1218                                                 ost_get_last_id_server);
1219 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1220
1221 const struct req_format RQF_OST_GET_INFO_FIEMAP =
1222         DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1223                                                ost_get_fiemap_server);
1224 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1225
1226
1227 #if !defined(__REQ_LAYOUT_USER__)
1228
1229 int req_layout_init(void)
1230 {
1231         int i;
1232         int j;
1233         int k;
1234
1235         for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1236                 struct req_format *rf;
1237
1238                 rf = (struct req_format *)req_formats[i];
1239                 rf->rf_idx = i;
1240                 for (j = 0; j < RCL_NR; ++j) {
1241                         LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1242                         for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1243                                 struct req_msg_field *field;
1244
1245                                 field = (typeof(field))rf->rf_fields[j].d[k];
1246                                 LASSERT(field->rmf_offset[i][j] == 0);
1247                                 /*
1248                                  * k + 1 to detect unused format/field
1249                                  * combinations.
1250                                  */
1251                                 field->rmf_offset[i][j] = k + 1;
1252                         }
1253                 }
1254         }
1255         return 0;
1256 }
1257 EXPORT_SYMBOL(req_layout_init);
1258
1259 void req_layout_fini(void)
1260 {
1261 }
1262 EXPORT_SYMBOL(req_layout_fini);
1263
1264 void req_capsule_init_area(struct req_capsule *pill)
1265 {
1266         int i;
1267
1268         for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1269                 pill->rc_area[RCL_CLIENT][i] = -1;
1270                 pill->rc_area[RCL_SERVER][i] = -1;
1271         }
1272 }
1273 EXPORT_SYMBOL(req_capsule_init_area);
1274
1275 /*
1276  * Initialize capsule.
1277  *
1278  * @area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1279  * variable-sized fields.
1280  */
1281 void req_capsule_init(struct req_capsule *pill,
1282                       struct ptlrpc_request *req,
1283                       enum req_location location)
1284 {
1285         LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1286
1287         memset(pill, 0, sizeof *pill);
1288         pill->rc_req = req;
1289         pill->rc_loc = location;
1290         req_capsule_init_area(pill);
1291 }
1292 EXPORT_SYMBOL(req_capsule_init);
1293
1294 void req_capsule_fini(struct req_capsule *pill)
1295 {
1296 }
1297 EXPORT_SYMBOL(req_capsule_fini);
1298
1299 static int __req_format_is_sane(const struct req_format *fmt)
1300 {
1301         return
1302                 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1303                 req_formats[fmt->rf_idx] == fmt;
1304 }
1305
1306 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1307                                     enum req_location loc)
1308 {
1309         struct ptlrpc_request *req;
1310
1311         req = pill->rc_req;
1312         return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1313 }
1314
1315 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1316 {
1317         LASSERT(pill->rc_fmt == NULL);
1318         LASSERT(__req_format_is_sane(fmt));
1319
1320         pill->rc_fmt = fmt;
1321 }
1322 EXPORT_SYMBOL(req_capsule_set);
1323
1324 int req_capsule_filled_sizes(struct req_capsule *pill,
1325                            enum req_location loc)
1326 {
1327         const struct req_format *fmt = pill->rc_fmt;
1328         int                      i;
1329
1330         LASSERT(fmt != NULL);
1331
1332         for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1333                 if (pill->rc_area[loc][i] == -1) {
1334                         pill->rc_area[loc][i] =
1335                                             fmt->rf_fields[loc].d[i]->rmf_size;
1336                         if (pill->rc_area[loc][i] == -1) {
1337                                 /* skip the following fields */
1338                                 LASSERT(loc != RCL_SERVER);
1339                                 break;
1340                         }
1341                 }
1342         }
1343         return i;
1344 }
1345 EXPORT_SYMBOL(req_capsule_filled_sizes);
1346
1347 int req_capsule_server_pack(struct req_capsule *pill)
1348 {
1349         const struct req_format *fmt;
1350         int                      count;
1351         int                      rc;
1352
1353         LASSERT(pill->rc_loc == RCL_SERVER);
1354         fmt = pill->rc_fmt;
1355         LASSERT(fmt != NULL);
1356
1357         count = req_capsule_filled_sizes(pill, RCL_SERVER);
1358         rc = lustre_pack_reply(pill->rc_req, count,
1359                                pill->rc_area[RCL_SERVER], NULL);
1360         if (rc != 0) {
1361                 DEBUG_REQ(D_ERROR, pill->rc_req,
1362                           "Cannot pack %d fields in format `%s': ",
1363                           count, fmt->rf_name);
1364         }
1365         return rc;
1366 }
1367 EXPORT_SYMBOL(req_capsule_server_pack);
1368
1369 static int __req_capsule_offset(const struct req_capsule *pill,
1370                                 const struct req_msg_field *field,
1371                                 enum req_location loc)
1372 {
1373         int offset;
1374
1375         offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1376         LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1377                             pill->rc_fmt->rf_name,
1378                             field->rmf_name, offset, loc);
1379         offset --;
1380         LASSERT(0 <= offset && offset < (sizeof(pill->rc_swabbed) << 3));
1381         return offset;
1382 }
1383
1384 static void *__req_capsule_get(struct req_capsule *pill,
1385                                const struct req_msg_field *field,
1386                                enum req_location loc,
1387                                void (*swabber)( void *))
1388 {
1389         const struct req_format *fmt;
1390         struct lustre_msg       *msg;
1391         void                    *value;
1392         int                      len;
1393         int                      offset;
1394
1395         void *(*getter)(struct lustre_msg *m, int n, int minlen);
1396
1397         static const char *rcl_names[RCL_NR] = {
1398                 [RCL_CLIENT] = "client",
1399                 [RCL_SERVER] = "server"
1400         };
1401
1402         LASSERT(pill != NULL);
1403         LASSERT(pill != LP_POISON);
1404         fmt = pill->rc_fmt;
1405         LASSERT(fmt != NULL);
1406         LASSERT(fmt != LP_POISON);
1407         LASSERT(__req_format_is_sane(fmt));
1408
1409         offset = __req_capsule_offset(pill, field, loc);
1410
1411         msg = __req_msg(pill, loc);
1412         LASSERT(msg != NULL);
1413
1414         getter = (field->rmf_flags & RMF_F_STRING) ?
1415                 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1416
1417         if (pill->rc_area[loc][offset] != -1)
1418                 len = pill->rc_area[loc][offset];
1419         else
1420                 len = max(field->rmf_size, 0);
1421         value = getter(msg, offset, len);
1422
1423         swabber = swabber ?: field->rmf_swabber;
1424         if (!(pill->rc_swabbed & (1 << offset)) && loc != pill->rc_loc &&
1425             swabber != NULL && value != NULL &&
1426             lustre_msg_swabbed(msg)) {
1427                 swabber(value);
1428                 pill->rc_swabbed |= (1 << offset);
1429         }
1430         if (value == NULL) {
1431                 DEBUG_REQ(D_ERROR, pill->rc_req,
1432                           "Wrong buffer for field `%s' (%d of %d) "
1433                           "in format `%s': %d vs. %d (%s)\n",
1434                           field->rmf_name, offset, lustre_msg_bufcount(msg), fmt->rf_name,
1435                           lustre_msg_buflen(msg, offset), len,
1436                           rcl_names[loc]);
1437         }
1438
1439         return value;
1440 }
1441
1442 void *req_capsule_client_get(struct req_capsule *pill,
1443                              const struct req_msg_field *field)
1444 {
1445         return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1446 }
1447 EXPORT_SYMBOL(req_capsule_client_get);
1448
1449 void *req_capsule_client_swab_get(struct req_capsule *pill,
1450                                   const struct req_msg_field *field,
1451                                   void (*swabber)(void* ))
1452 {
1453         return __req_capsule_get(pill, field, RCL_CLIENT, swabber);
1454 }
1455 EXPORT_SYMBOL(req_capsule_client_swab_get);
1456
1457 void *req_capsule_client_sized_get(struct req_capsule *pill,
1458                                    const struct req_msg_field *field,
1459                                    int len)
1460 {
1461         req_capsule_set_size(pill, field, RCL_CLIENT, len);
1462         return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1463 }
1464 EXPORT_SYMBOL(req_capsule_client_sized_get);
1465
1466 void *req_capsule_server_get(struct req_capsule *pill,
1467                              const struct req_msg_field *field)
1468 {
1469         return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1470 }
1471 EXPORT_SYMBOL(req_capsule_server_get);
1472
1473 void *req_capsule_server_swab_get(struct req_capsule *pill,
1474                                   const struct req_msg_field *field,
1475                                   void *swabber)
1476 {
1477         return __req_capsule_get(pill, field, RCL_SERVER, swabber);
1478 }
1479 EXPORT_SYMBOL(req_capsule_server_swab_get);
1480
1481
1482 void *req_capsule_server_sized_get(struct req_capsule *pill,
1483                                    const struct req_msg_field *field,
1484                                    int len)
1485 {
1486         req_capsule_set_size(pill, field, RCL_SERVER, len);
1487         return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1488 }
1489 EXPORT_SYMBOL(req_capsule_server_sized_get);
1490
1491 const void *req_capsule_other_get(struct req_capsule *pill,
1492                                   const struct req_msg_field *field)
1493 {
1494         return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL);
1495 }
1496 EXPORT_SYMBOL(req_capsule_other_get);
1497
1498 void req_capsule_set_size(struct req_capsule *pill,
1499                           const struct req_msg_field *field,
1500                           enum req_location loc, int size)
1501 {
1502         LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1503
1504         pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1505 }
1506 EXPORT_SYMBOL(req_capsule_set_size);
1507
1508 /* NB: this function doesn't correspond with req_capsule_set_size(), which
1509  * actually sets the size in pill.rc_area[loc][offset], but this function
1510  * returns the message buflen[offset], maybe we should use another name.
1511  */
1512 int req_capsule_get_size(const struct req_capsule *pill,
1513                          const struct req_msg_field *field,
1514                          enum req_location loc)
1515 {
1516         LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1517
1518         return lustre_msg_buflen(__req_msg(pill, loc),
1519                                  __req_capsule_offset(pill, field, loc));
1520 }
1521 EXPORT_SYMBOL(req_capsule_get_size);
1522
1523 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1524 {
1525         return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1526                                pill->rc_fmt->rf_fields[loc].nr,
1527                                pill->rc_area[loc]);
1528 }
1529
1530 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
1531                          enum req_location loc)
1532 {
1533         int size, i = 0;
1534
1535         size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
1536         if (size < 0)
1537                 return size;
1538
1539         for (; i < fmt->rf_fields[loc].nr; ++i)
1540                 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
1541                         size += size_round(fmt->rf_fields[loc].d[i]->rmf_size);
1542         return size;
1543 }
1544
1545 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1546
1547 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
1548 {
1549         int i;
1550         int j;
1551
1552         const struct req_format *old;
1553
1554         LASSERT(pill->rc_fmt != NULL);
1555         LASSERT(__req_format_is_sane(fmt));
1556
1557         old = pill->rc_fmt;
1558         /*
1559          * Sanity checking...
1560          */
1561         for (i = 0; i < RCL_NR; ++i) {
1562                 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
1563                 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
1564                         LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
1565                 }
1566                 /*
1567                  * Last field in old format can be shorter than in new.
1568                  */
1569                 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
1570                         FMT_FIELD(old, i, j)->rmf_size);
1571         }
1572         /* last field should be returned to the unswabbed state */
1573         pill->rc_swabbed &= ~(__u32)(1 << j);
1574         pill->rc_fmt = fmt;
1575 }
1576 EXPORT_SYMBOL(req_capsule_extend);
1577
1578 int req_capsule_has_field(const struct req_capsule *pill,
1579                           const struct req_msg_field *field,
1580                           enum req_location loc)
1581 {
1582         LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1583
1584         return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1585 }
1586 EXPORT_SYMBOL(req_capsule_has_field);
1587
1588 int req_capsule_field_present(const struct req_capsule *pill,
1589                               const struct req_msg_field *field,
1590                               enum req_location loc)
1591 {
1592         int offset;
1593
1594         LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1595         LASSERT(req_capsule_has_field(pill, field, loc));
1596
1597         offset = __req_capsule_offset(pill, field, loc);
1598         return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
1599 }
1600 EXPORT_SYMBOL(req_capsule_field_present);
1601
1602 void req_capsule_shrink(struct req_capsule *pill,
1603                         const struct req_msg_field *field,
1604                         unsigned int newlen,
1605                         enum req_location loc)
1606 {
1607         const struct req_format *fmt;
1608         struct lustre_msg       *msg;
1609         int                      len;
1610         int                      offset;
1611
1612         fmt = pill->rc_fmt;
1613         LASSERT(fmt != NULL);
1614         LASSERT(__req_format_is_sane(fmt));
1615         LASSERT(req_capsule_has_field(pill, field, loc));
1616         LASSERT(req_capsule_field_present(pill, field, loc));
1617
1618         offset = __req_capsule_offset(pill, field, loc);
1619
1620         msg = __req_msg(pill, loc);
1621         len = lustre_msg_buflen(msg, offset);
1622         LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
1623                                 fmt->rf_name, field->rmf_name, len, newlen);
1624
1625         if (loc == RCL_CLIENT)
1626                 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
1627                                                             1);
1628         else
1629                 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
1630                                                             1);
1631 }
1632 EXPORT_SYMBOL(req_capsule_shrink);
1633
1634 /* __REQ_LAYOUT_USER__ */
1635 #endif