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