lustre/ptlrpc/pack_generic.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/ptlrpc/pack_generic.c
  33  *
  34  * (Un)packing of OST requests
  35  *
  36  * Author: Peter J. Braam <braam@clusterfs.com>
  37  * Author: Phil Schwan <phil@clusterfs.com>
  38  * Author: Eric Barton <eeb@clusterfs.com>
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_RPC
  42
  43 #include <libcfs/libcfs.h>
  44
  45 #include <llog_swab.h>
  46 #include <lustre_net.h>
  47 #include <lustre_swab.h>
  48 #include <obd_cksum.h>
  49 #include <obd_class.h>
  50 #include <obd_support.h>
  51 #include <obj_update.h>
  52
  53 #include "ptlrpc_internal.h"
  54
  55 static inline __u32 lustre_msg_hdr_size_v2(__u32 count)
  56 {
  57         return cfs_size_round(offsetof(struct lustre_msg_v2,
  58                                        lm_buflens[count]));
  59 }
  60
  61 __u32 lustre_msg_hdr_size(__u32 magic, __u32 count)
  62 {
  63         switch (magic) {
  64         case LUSTRE_MSG_MAGIC_V2:
  65                 return lustre_msg_hdr_size_v2(count);
  66         default:
  67                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  68                 return 0;
  69         }
  70 }
  71
  72 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  73                             __u32 index)
  74 {
  75         if (inout)
  76                 lustre_set_req_swabbed(req, index);
  77         else
  78                 lustre_set_rep_swabbed(req, index);
  79 }
  80
  81 bool ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  82                           __u32 index)
  83 {
  84         if (inout)
  85                 return (ptlrpc_req_need_swab(req) &&
  86                         !lustre_req_swabbed(req, index));
  87
  88         return (ptlrpc_rep_need_swab(req) && !lustre_rep_swabbed(req, index));
  89 }
  90
  91 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  92                                               enum lustre_msg_version version)
  93 {
  94         enum lustre_msg_version ver = lustre_msg_get_version(msg);
  95
  96         return (ver & LUSTRE_VERSION_MASK) != version;
  97 }
  98
  99 int lustre_msg_check_version(struct lustre_msg *msg,
 100                              enum lustre_msg_version version)
 101 {
 102 #define LUSTRE_MSG_MAGIC_V1 0x0BD00BD0
 103         switch (msg->lm_magic) {
 104         case LUSTRE_MSG_MAGIC_V1:
 105                 CERROR("msg v1 not supported - please upgrade you system\n");
 106                 return -EINVAL;
 107         case LUSTRE_MSG_MAGIC_V2:
 108                 return lustre_msg_check_version_v2(msg, version);
 109         default:
 110                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 111                 return -EPROTO;
 112         }
 113 #undef LUSTRE_MSG_MAGIC_V1
 114 }
 115
 116 /* early reply size */
 117 __u32 lustre_msg_early_size()
 118 {
 119         __u32 pblen = sizeof(struct ptlrpc_body);
 120
 121         return lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 122 }
 123 EXPORT_SYMBOL(lustre_msg_early_size);
 124
 125 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
 126 {
 127         __u32 size;
 128         int i;
 129
 130         size = lustre_msg_hdr_size_v2(count);
 131         for (i = 0; i < count; i++)
 132                 size += cfs_size_round(lengths[i]);
 133
 134         return size;
 135 }
 136 EXPORT_SYMBOL(lustre_msg_size_v2);
 137
 138 /* This returns the size of the buffer that is required to hold a lustre_msg
 139  * with the given sub-buffer lengths.
 140  * NOTE: this should only be used for NEW requests, and should always be
 141  *       in the form of a v2 request.  If this is a connection to a v1
 142  *       target then the first buffer will be stripped because the ptlrpc
 143  *       data is part of the lustre_msg_v1 header. b=14043 */
 144 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 145 {
 146         __u32 size[] = { sizeof(struct ptlrpc_body) };
 147
 148         if (!lens) {
 149                 LASSERT(count == 1);
 150                 lens = size;
 151         }
 152
 153         LASSERT(count > 0);
 154         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 155
 156         switch (magic) {
 157         case LUSTRE_MSG_MAGIC_V2:
 158                 return lustre_msg_size_v2(count, lens);
 159         default:
 160                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 161                 return 0;
 162         }
 163 }
 164
 165 /* This is used to determine the size of a buffer that was already packed
 166  * and will correctly handle the different message formats. */
 167 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 168 {
 169         switch (msg->lm_magic) {
 170         case LUSTRE_MSG_MAGIC_V2:
 171                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 172         default:
 173                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 174                 return 0;
 175         }
 176 }
 177 EXPORT_SYMBOL(lustre_packed_msg_size);
 178
 179 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 180                         char **bufs)
 181 {
 182         char *ptr;
 183         int i;
 184
 185         msg->lm_bufcount = count;
 186         /* XXX: lm_secflvr uninitialized here */
 187         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 188
 189         for (i = 0; i < count; i++)
 190                 msg->lm_buflens[i] = lens[i];
 191
 192         if (bufs == NULL)
 193                 return;
 194
 195         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 196         for (i = 0; i < count; i++) {
 197                 char *tmp = bufs[i];
 198
 199                 if (tmp)
 200                         memcpy(ptr, tmp, lens[i]);
 201                 ptr += cfs_size_round(lens[i]);
 202         }
 203 }
 204 EXPORT_SYMBOL(lustre_init_msg_v2);
 205
 206 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 207                                   int count, __u32 *lens, char **bufs)
 208 {
 209         int reqlen, rc;
 210
 211         reqlen = lustre_msg_size_v2(count, lens);
 212
 213         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 214         if (rc)
 215                 return rc;
 216
 217         req->rq_reqlen = reqlen;
 218
 219         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 220         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 221         return 0;
 222 }
 223
 224 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 225                         __u32 *lens, char **bufs)
 226 {
 227         __u32 size[] = { sizeof(struct ptlrpc_body) };
 228
 229         if (!lens) {
 230                 LASSERT(count == 1);
 231                 lens = size;
 232         }
 233
 234         LASSERT(count > 0);
 235         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 236
 237         /* only use new format, we don't need to be compatible with 1.4 */
 238         magic = LUSTRE_MSG_MAGIC_V2;
 239
 240         switch (magic) {
 241         case LUSTRE_MSG_MAGIC_V2:
 242                 return lustre_pack_request_v2(req, count, lens, bufs);
 243         default:
 244                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 245                 return -EINVAL;
 246         }
 247 }
 248
 249 #if RS_DEBUG
 250 struct list_head ptlrpc_rs_debug_lru =
 251         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 252 spinlock_t ptlrpc_rs_debug_lock;
 253
 254 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 255 do {                                                                    \
 256         spin_lock(&ptlrpc_rs_debug_lock);                               \
 257         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 258         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 259 } while (0)
 260
 261 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 262 do {                                                                    \
 263         spin_lock(&ptlrpc_rs_debug_lock);                               \
 264         list_del(&(rs)->rs_debug_list);                         \
 265         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 266 } while (0)
 267 #else
 268 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 269 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 270 #endif
 271
 272 struct ptlrpc_reply_state *
 273 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 274 {
 275         struct ptlrpc_reply_state *rs = NULL;
 276
 277         spin_lock(&svcpt->scp_rep_lock);
 278
 279         /* See if we have anything in a pool, and wait if nothing */
 280         while (list_empty(&svcpt->scp_rep_idle)) {
 281                 struct l_wait_info      lwi;
 282                 int                     rc;
 283
 284                 spin_unlock(&svcpt->scp_rep_lock);
 285                 /* If we cannot get anything for some long time, we better
 286                  * bail out instead of waiting infinitely */
 287                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 288                 rc = l_wait_event(svcpt->scp_rep_waitq,
 289                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 290                 if (rc != 0)
 291                         goto out;
 292                 spin_lock(&svcpt->scp_rep_lock);
 293         }
 294
 295         rs = list_entry(svcpt->scp_rep_idle.next,
 296                             struct ptlrpc_reply_state, rs_list);
 297         list_del(&rs->rs_list);
 298
 299         spin_unlock(&svcpt->scp_rep_lock);
 300
 301         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 302         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 303         rs->rs_svcpt = svcpt;
 304         rs->rs_prealloc = 1;
 305 out:
 306         return rs;
 307 }
 308
 309 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 310 {
 311         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 312
 313         spin_lock(&svcpt->scp_rep_lock);
 314         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 315         spin_unlock(&svcpt->scp_rep_lock);
 316         wake_up(&svcpt->scp_rep_waitq);
 317 }
 318
 319 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 320                          __u32 *lens, char **bufs, int flags)
 321 {
 322         struct ptlrpc_reply_state *rs;
 323         int                        msg_len, rc;
 324         ENTRY;
 325
 326         LASSERT(req->rq_reply_state == NULL);
 327
 328         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 329                 spin_lock(&req->rq_lock);
 330                 req->rq_packed_final = 1;
 331                 spin_unlock(&req->rq_lock);
 332         }
 333
 334         msg_len = lustre_msg_size_v2(count, lens);
 335         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 336         if (rc)
 337                 RETURN(rc);
 338
 339         rs = req->rq_reply_state;
 340         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 341         rs->rs_cb_id.cbid_fn = reply_out_callback;
 342         rs->rs_cb_id.cbid_arg = rs;
 343         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 344         INIT_LIST_HEAD(&rs->rs_exp_list);
 345         INIT_LIST_HEAD(&rs->rs_obd_list);
 346         INIT_LIST_HEAD(&rs->rs_list);
 347         spin_lock_init(&rs->rs_lock);
 348
 349         req->rq_replen = msg_len;
 350         req->rq_reply_state = rs;
 351         req->rq_repmsg = rs->rs_msg;
 352
 353         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 354         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 355
 356         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 357
 358         RETURN(0);
 359 }
 360 EXPORT_SYMBOL(lustre_pack_reply_v2);
 361
 362 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 363                             char **bufs, int flags)
 364 {
 365         int rc = 0;
 366         __u32 size[] = { sizeof(struct ptlrpc_body) };
 367
 368         if (!lens) {
 369                 LASSERT(count == 1);
 370                 lens = size;
 371         }
 372
 373         LASSERT(count > 0);
 374         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 375
 376         switch (req->rq_reqmsg->lm_magic) {
 377         case LUSTRE_MSG_MAGIC_V2:
 378                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 379                 break;
 380         default:
 381                 LASSERTF(0, "incorrect message magic: %08x\n",
 382                          req->rq_reqmsg->lm_magic);
 383                 rc = -EINVAL;
 384         }
 385         if (rc != 0)
 386                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 387                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 388         return rc;
 389 }
 390
 391 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 392                       char **bufs)
 393 {
 394         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 395 }
 396 EXPORT_SYMBOL(lustre_pack_reply);
 397
 398 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
 399 {
 400         __u32 i, offset, buflen, bufcount;
 401
 402         LASSERT(m != NULL);
 403
 404         bufcount = m->lm_bufcount;
 405         if (unlikely(n >= bufcount)) {
 406                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 407                        m, n, bufcount);
 408                 return NULL;
 409         }
 410
 411         buflen = m->lm_buflens[n];
 412         if (unlikely(buflen < min_size)) {
 413                 CERROR("msg %p buffer[%d] size %d too small "
 414                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 415                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 416                 return NULL;
 417         }
 418
 419         offset = lustre_msg_hdr_size_v2(bufcount);
 420         for (i = 0; i < n; i++)
 421                 offset += cfs_size_round(m->lm_buflens[i]);
 422
 423         return (char *)m + offset;
 424 }
 425
 426 void *lustre_msg_buf(struct lustre_msg *m, __u32 n, __u32 min_size)
 427 {
 428         switch (m->lm_magic) {
 429         case LUSTRE_MSG_MAGIC_V2:
 430                 return lustre_msg_buf_v2(m, n, min_size);
 431         default:
 432                 LASSERTF(0, "incorrect message magic: %08x (msg:%p)\n",
 433                          m->lm_magic, m);
 434                 return NULL;
 435         }
 436 }
 437 EXPORT_SYMBOL(lustre_msg_buf);
 438
 439 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 440                                 unsigned int newlen, int move_data)
 441 {
 442         char   *tail = NULL, *newpos;
 443         int     tail_len = 0, n;
 444
 445         LASSERT(msg);
 446         LASSERT(msg->lm_bufcount > segment);
 447         LASSERT(msg->lm_buflens[segment] >= newlen);
 448
 449         if (msg->lm_buflens[segment] == newlen)
 450                 goto out;
 451
 452         if (move_data && msg->lm_bufcount > segment + 1) {
 453                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 454                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 455                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 456         }
 457
 458         msg->lm_buflens[segment] = newlen;
 459
 460         if (tail && tail_len) {
 461                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 462                 LASSERT(newpos <= tail);
 463                 if (newpos != tail)
 464                         memmove(newpos, tail, tail_len);
 465         }
 466 out:
 467         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 468 }
 469
 470 /*
 471  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 472  * we also move data forward from @segment + 1.
 473  *
 474  * if @newlen == 0, we remove the segment completely, but we still keep the
 475  * totally bufcount the same to save possible data moving. this will leave a
 476  * unused segment with size 0 at the tail, but that's ok.
 477  *
 478  * return new msg size after shrinking.
 479  *
 480  * CAUTION:
 481  * + if any buffers higher than @segment has been filled in, must call shrink
 482  *   with non-zero @move_data.
 483  * + caller should NOT keep pointers to msg buffers which higher than @segment
 484  *   after call shrink.
 485  */
 486 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 487                       unsigned int newlen, int move_data)
 488 {
 489         switch (msg->lm_magic) {
 490         case LUSTRE_MSG_MAGIC_V2:
 491                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 492         default:
 493                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 494         }
 495 }
 496 EXPORT_SYMBOL(lustre_shrink_msg);
 497
 498 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 499 {
 500         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 501
 502         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 503         LASSERT(!rs->rs_difficult || rs->rs_handled);
 504         LASSERT(!rs->rs_on_net);
 505         LASSERT(!rs->rs_scheduled);
 506         LASSERT(rs->rs_export == NULL);
 507         LASSERT(rs->rs_nlocks == 0);
 508         LASSERT(list_empty(&rs->rs_exp_list));
 509         LASSERT(list_empty(&rs->rs_obd_list));
 510
 511         sptlrpc_svc_free_rs(rs);
 512 }
 513
 514 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 515 {
 516         int swabbed, required_len, i;
 517
 518         /* Now we know the sender speaks my language. */
 519         required_len = lustre_msg_hdr_size_v2(0);
 520         if (len < required_len) {
 521                 /* can't even look inside the message */
 522                 CERROR("message length %d too small for lustre_msg\n", len);
 523                 return -EINVAL;
 524         }
 525
 526         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 527
 528         if (swabbed) {
 529                 __swab32s(&m->lm_magic);
 530                 __swab32s(&m->lm_bufcount);
 531                 __swab32s(&m->lm_secflvr);
 532                 __swab32s(&m->lm_repsize);
 533                 __swab32s(&m->lm_cksum);
 534                 __swab32s(&m->lm_flags);
 535                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 536                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 537         }
 538
 539         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 540         if (len < required_len) {
 541                 /* didn't receive all the buffer lengths */
 542                 CERROR ("message length %d too small for %d buflens\n",
 543                         len, m->lm_bufcount);
 544                 return -EINVAL;
 545         }
 546
 547         for (i = 0; i < m->lm_bufcount; i++) {
 548                 if (swabbed)
 549                         __swab32s(&m->lm_buflens[i]);
 550                 required_len += cfs_size_round(m->lm_buflens[i]);
 551         }
 552
 553         if (len < required_len) {
 554                 CERROR("len: %d, required_len %d\n", len, required_len);
 555                 CERROR("bufcount: %d\n", m->lm_bufcount);
 556                 for (i = 0; i < m->lm_bufcount; i++)
 557                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 558                 return -EINVAL;
 559         }
 560
 561         return swabbed;
 562 }
 563
 564 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 565 {
 566         int required_len, rc;
 567         ENTRY;
 568
 569         /* We can provide a slightly better error log, if we check the
 570          * message magic and version first.  In the future, struct
 571          * lustre_msg may grow, and we'd like to log a version mismatch,
 572          * rather than a short message.
 573          *
 574          */
 575         required_len = offsetof(struct lustre_msg, lm_magic) +
 576                        sizeof(m->lm_magic);
 577         if (len < required_len) {
 578                 /* can't even look inside the message */
 579                 CERROR("message length %d too small for magic/version check\n",
 580                        len);
 581                 RETURN(-EINVAL);
 582         }
 583
 584         rc = lustre_unpack_msg_v2(m, len);
 585
 586         RETURN(rc);
 587 }
 588 EXPORT_SYMBOL(__lustre_unpack_msg);
 589
 590 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 591 {
 592         int rc;
 593         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 594         if (rc == 1) {
 595                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 596                 rc = 0;
 597         }
 598         return rc;
 599 }
 600
 601 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 602 {
 603         int rc;
 604         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 605         if (rc == 1) {
 606                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 607                 rc = 0;
 608         }
 609         return rc;
 610 }
 611
 612 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 613                                                const int inout, int offset)
 614 {
 615         struct ptlrpc_body *pb;
 616         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 617
 618         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 619         if (!pb) {
 620                 CERROR("error unpacking ptlrpc body\n");
 621                 return -EFAULT;
 622         }
 623         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 624                 lustre_swab_ptlrpc_body(pb);
 625                 ptlrpc_buf_set_swabbed(req, inout, offset);
 626         }
 627
 628         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 629                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 630                  return -EINVAL;
 631         }
 632
 633         if (!inout)
 634                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 635
 636         return 0;
 637 }
 638
 639 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 640 {
 641         switch (req->rq_reqmsg->lm_magic) {
 642         case LUSTRE_MSG_MAGIC_V2:
 643                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 644         default:
 645                 CERROR("bad lustre msg magic: %08x\n",
 646                        req->rq_reqmsg->lm_magic);
 647                 return -EINVAL;
 648         }
 649 }
 650
 651 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 652 {
 653         switch (req->rq_repmsg->lm_magic) {
 654         case LUSTRE_MSG_MAGIC_V2:
 655                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 656         default:
 657                 CERROR("bad lustre msg magic: %08x\n",
 658                        req->rq_repmsg->lm_magic);
 659                 return -EINVAL;
 660         }
 661 }
 662
 663 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 664 {
 665         if (n >= m->lm_bufcount)
 666                 return 0;
 667
 668         return m->lm_buflens[n];
 669 }
 670
 671 /**
 672  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 673  * \param m lustre_msg (request or reply) to look at
 674  * \param n message index (base 0)
 675  *
 676  * returns zero for non-existent message indices
 677  */
 678 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 679 {
 680         switch (m->lm_magic) {
 681         case LUSTRE_MSG_MAGIC_V2:
 682                 return lustre_msg_buflen_v2(m, n);
 683         default:
 684                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 685                 return 0;
 686         }
 687 }
 688 EXPORT_SYMBOL(lustre_msg_buflen);
 689
 690 static inline void
 691 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 692 {
 693         if (n >= m->lm_bufcount)
 694                 LBUG();
 695
 696         m->lm_buflens[n] = len;
 697 }
 698
 699 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 700 {
 701         switch (m->lm_magic) {
 702         case LUSTRE_MSG_MAGIC_V2:
 703                 lustre_msg_set_buflen_v2(m, n, len);
 704                 return;
 705         default:
 706                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 707         }
 708 }
 709
 710 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 711  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 712 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 713 {
 714         switch (m->lm_magic) {
 715         case LUSTRE_MSG_MAGIC_V2:
 716                 return m->lm_bufcount;
 717         default:
 718                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 719                 return 0;
 720         }
 721 }
 722
 723 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 724 {
 725         /* max_len == 0 means the string should fill the buffer */
 726         char *str;
 727         __u32 slen, blen;
 728
 729         switch (m->lm_magic) {
 730         case LUSTRE_MSG_MAGIC_V2:
 731                 str = lustre_msg_buf_v2(m, index, 0);
 732                 blen = lustre_msg_buflen_v2(m, index);
 733                 break;
 734         default:
 735                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 736         }
 737
 738         if (str == NULL) {
 739                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 740                 return NULL;
 741         }
 742
 743         slen = strnlen(str, blen);
 744
 745         if (slen == blen) {                     /* not NULL terminated */
 746                 CERROR("can't unpack non-NULL terminated string in "
 747                         "msg %p buffer[%d] len %d\n", m, index, blen);
 748                 return NULL;
 749         }
 750
 751         if (max_len == 0) {
 752                 if (slen != blen - 1) {
 753                         CERROR("can't unpack short string in msg %p "
 754                                "buffer[%d] len %d: strlen %d\n",
 755                                m, index, blen, slen);
 756                         return NULL;
 757                 }
 758         } else if (slen > max_len) {
 759                 CERROR("can't unpack oversized string in msg %p "
 760                        "buffer[%d] len %d strlen %d: max %d expected\n",
 761                        m, index, blen, slen, max_len);
 762                 return NULL;
 763         }
 764
 765         return str;
 766 }
 767
 768 /* Wrap up the normal fixed length cases */
 769 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 770                                       __u32 min_size, void *swabber)
 771 {
 772         void *ptr = NULL;
 773
 774         LASSERT(msg != NULL);
 775         switch (msg->lm_magic) {
 776         case LUSTRE_MSG_MAGIC_V2:
 777                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 778                 break;
 779         default:
 780                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 781         }
 782
 783         if (ptr != NULL && swabber != NULL)
 784                 ((void (*)(void *))swabber)(ptr);
 785
 786         return ptr;
 787 }
 788
 789 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 790 {
 791         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 792                                  sizeof(struct ptlrpc_body_v2));
 793 }
 794
 795 enum lustre_msghdr lustre_msghdr_get_flags(struct lustre_msg *msg)
 796 {
 797         switch (msg->lm_magic) {
 798         case LUSTRE_MSG_MAGIC_V2:
 799                 /* already in host endian */
 800                 return msg->lm_flags;
 801         default:
 802                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 803                 return 0;
 804         }
 805 }
 806 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 807
 808 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 809 {
 810         switch (msg->lm_magic) {
 811         case LUSTRE_MSG_MAGIC_V2:
 812                 msg->lm_flags = flags;
 813                 return;
 814         default:
 815                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 816         }
 817 }
 818
 819 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 820 {
 821         switch (msg->lm_magic) {
 822         case LUSTRE_MSG_MAGIC_V2: {
 823                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 824                 if (pb != NULL)
 825                         return pb->pb_flags;
 826
 827                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 828         }
 829         /* no break */
 830         default:
 831                 /* flags might be printed in debug code while message
 832                  * uninitialized */
 833                 return 0;
 834         }
 835 }
 836 EXPORT_SYMBOL(lustre_msg_get_flags);
 837
 838 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 839 {
 840         switch (msg->lm_magic) {
 841         case LUSTRE_MSG_MAGIC_V2: {
 842                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 843                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 844                 pb->pb_flags |= flags;
 845                 return;
 846         }
 847         default:
 848                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 849         }
 850 }
 851 EXPORT_SYMBOL(lustre_msg_add_flags);
 852
 853 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
 854 {
 855         switch (msg->lm_magic) {
 856         case LUSTRE_MSG_MAGIC_V2: {
 857                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 858                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 859                 pb->pb_flags = flags;
 860                 return;
 861         }
 862         default:
 863                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 864         }
 865 }
 866
 867 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 868 {
 869         switch (msg->lm_magic) {
 870         case LUSTRE_MSG_MAGIC_V2: {
 871                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 872                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 873                 pb->pb_flags &= ~flags;
 874
 875                 return;
 876         }
 877         default:
 878                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 879         }
 880 }
 881 EXPORT_SYMBOL(lustre_msg_clear_flags);
 882
 883 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 884 {
 885         switch (msg->lm_magic) {
 886         case LUSTRE_MSG_MAGIC_V2: {
 887                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 888                 if (pb != NULL)
 889                         return pb->pb_op_flags;
 890
 891                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 892         }
 893         /* no break */
 894         default:
 895                 return 0;
 896         }
 897 }
 898
 899 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 900 {
 901         switch (msg->lm_magic) {
 902         case LUSTRE_MSG_MAGIC_V2: {
 903                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 904                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 905                 pb->pb_op_flags |= flags;
 906                 return;
 907         }
 908         default:
 909                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 910         }
 911 }
 912 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 913
 914 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 915 {
 916         switch (msg->lm_magic) {
 917         case LUSTRE_MSG_MAGIC_V2: {
 918                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 919                 if (pb == NULL) {
 920                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 921                         return NULL;
 922                 }
 923                 return &pb->pb_handle;
 924         }
 925         default:
 926                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 927                 return NULL;
 928         }
 929 }
 930
 931 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 932 {
 933         switch (msg->lm_magic) {
 934         case LUSTRE_MSG_MAGIC_V2: {
 935                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 936                 if (pb == NULL) {
 937                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 938                         return PTL_RPC_MSG_ERR;
 939                 }
 940                 return pb->pb_type;
 941         }
 942         default:
 943                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 944                 return PTL_RPC_MSG_ERR;
 945         }
 946 }
 947 EXPORT_SYMBOL(lustre_msg_get_type);
 948
 949 enum lustre_msg_version lustre_msg_get_version(struct lustre_msg *msg)
 950 {
 951         switch (msg->lm_magic) {
 952         case LUSTRE_MSG_MAGIC_V2: {
 953                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 954                 if (pb == NULL) {
 955                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 956                         return 0;
 957                 }
 958                 return pb->pb_version;
 959         }
 960         default:
 961                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 962                 return 0;
 963         }
 964 }
 965
 966 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
 967 {
 968         switch (msg->lm_magic) {
 969         case LUSTRE_MSG_MAGIC_V2: {
 970                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 971                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 972                 pb->pb_version |= version;
 973                 return;
 974         }
 975         default:
 976                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 977         }
 978 }
 979
 980 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
 981 {
 982         switch (msg->lm_magic) {
 983         case LUSTRE_MSG_MAGIC_V2: {
 984                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 985                 if (pb == NULL) {
 986                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 987                         return 0;
 988                 }
 989                 return pb->pb_opc;
 990         }
 991         default:
 992                 CERROR("incorrect message magic: %08x (msg:%p)\n",
 993                        msg->lm_magic, msg);
 994                 return 0;
 995         }
 996 }
 997 EXPORT_SYMBOL(lustre_msg_get_opc);
 998
 999 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1000 {
1001         switch (msg->lm_magic) {
1002         case LUSTRE_MSG_MAGIC_V2: {
1003                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1004                 if (pb == NULL) {
1005                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1006                         return 0;
1007                 }
1008                 return pb->pb_last_xid;
1009         }
1010         default:
1011                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1012                 return 0;
1013         }
1014 }
1015 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1016
1017 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1018 {
1019         switch (msg->lm_magic) {
1020         case LUSTRE_MSG_MAGIC_V2: {
1021                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1022                 if (!pb) {
1023                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1024                         return 0;
1025                 }
1026                 return pb->pb_tag;
1027         }
1028         default:
1029                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1030                 return 0;
1031         }
1032 }
1033 EXPORT_SYMBOL(lustre_msg_get_tag);
1034
1035 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1036 {
1037         switch (msg->lm_magic) {
1038         case LUSTRE_MSG_MAGIC_V2: {
1039                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1040                 if (pb == NULL) {
1041                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1042                         return 0;
1043                 }
1044                 return pb->pb_last_committed;
1045         }
1046         default:
1047                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1048                 return 0;
1049         }
1050 }
1051 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1052
1053 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1054 {
1055         switch (msg->lm_magic) {
1056         case LUSTRE_MSG_MAGIC_V2: {
1057                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1058                 if (pb == NULL) {
1059                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1060                         return NULL;
1061                 }
1062                 return pb->pb_pre_versions;
1063         }
1064         default:
1065                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1066                 return NULL;
1067         }
1068 }
1069 EXPORT_SYMBOL(lustre_msg_get_versions);
1070
1071 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1072 {
1073         switch (msg->lm_magic) {
1074         case LUSTRE_MSG_MAGIC_V2: {
1075                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1076                 if (pb == NULL) {
1077                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1078                         return 0;
1079                 }
1080                 return pb->pb_transno;
1081         }
1082         default:
1083                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1084                 return 0;
1085         }
1086 }
1087 EXPORT_SYMBOL(lustre_msg_get_transno);
1088
1089 int lustre_msg_get_status(struct lustre_msg *msg)
1090 {
1091         switch (msg->lm_magic) {
1092         case LUSTRE_MSG_MAGIC_V2: {
1093                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1094                 if (pb != NULL)
1095                         return pb->pb_status;
1096                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1097         }
1098         /* no break */
1099         default:
1100                 /* status might be printed in debug code while message
1101                 * uninitialized */
1102                 return -EINVAL;
1103         }
1104 }
1105 EXPORT_SYMBOL(lustre_msg_get_status);
1106
1107 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1108 {
1109         switch (msg->lm_magic) {
1110         case LUSTRE_MSG_MAGIC_V2: {
1111                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1112                 if (pb == NULL) {
1113                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1114                         return -EINVAL;
1115                 }
1116                 return pb->pb_slv;
1117         }
1118         default:
1119                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1120                 return -EINVAL;
1121         }
1122 }
1123
1124
1125 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1126 {
1127         switch (msg->lm_magic) {
1128         case LUSTRE_MSG_MAGIC_V2: {
1129                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1130                 if (pb == NULL) {
1131                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1132                         return;
1133                 }
1134                 pb->pb_slv = slv;
1135                 return;
1136         }
1137         default:
1138                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1139                 return;
1140         }
1141 }
1142
1143 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1144 {
1145         switch (msg->lm_magic) {
1146         case LUSTRE_MSG_MAGIC_V2: {
1147                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1148                 if (pb == NULL) {
1149                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1150                         return -EINVAL;
1151                 }
1152                 return pb->pb_limit;
1153         }
1154         default:
1155                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1156                 return -EINVAL;
1157         }
1158 }
1159
1160
1161 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1162 {
1163         switch (msg->lm_magic) {
1164         case LUSTRE_MSG_MAGIC_V2: {
1165                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1166                 if (pb == NULL) {
1167                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1168                         return;
1169                 }
1170                 pb->pb_limit = limit;
1171                 return;
1172         }
1173         default:
1174                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1175                 return;
1176         }
1177 }
1178
1179 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1180 {
1181         switch (msg->lm_magic) {
1182         case LUSTRE_MSG_MAGIC_V2: {
1183                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1184                 if (pb == NULL) {
1185                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1186                         return 0;
1187                 }
1188                 return pb->pb_conn_cnt;
1189         }
1190         default:
1191                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1192                 return 0;
1193         }
1194 }
1195 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1196
1197 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1198 {
1199         switch (msg->lm_magic) {
1200         case LUSTRE_MSG_MAGIC_V2:
1201                 return msg->lm_magic;
1202         default:
1203                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1204                 return 0;
1205         }
1206 }
1207
1208 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1209 {
1210         switch (msg->lm_magic) {
1211         case LUSTRE_MSG_MAGIC_V2: {
1212                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1213                 if (pb == NULL) {
1214                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1215                         return 0;
1216                 }
1217                 return pb->pb_timeout;
1218         }
1219         default:
1220                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1221                 return 0;
1222         }
1223 }
1224
1225 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1226 {
1227         switch (msg->lm_magic) {
1228         case LUSTRE_MSG_MAGIC_V2: {
1229                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1230                 if (pb == NULL) {
1231                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1232                         return 0;
1233                 }
1234                 return pb->pb_service_time;
1235         }
1236         default:
1237                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1238                 return 0;
1239         }
1240 }
1241
1242 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1243 {
1244         switch (msg->lm_magic) {
1245         case LUSTRE_MSG_MAGIC_V2: {
1246                 struct ptlrpc_body *pb;
1247
1248                 /* the old pltrpc_body_v2 is smaller; doesn't include jobid */
1249                 if (msg->lm_buflens[MSG_PTLRPC_BODY_OFF] <
1250                     sizeof(struct ptlrpc_body))
1251                         return NULL;
1252
1253                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1254                                           sizeof(struct ptlrpc_body));
1255                 if (!pb)
1256                         return NULL;
1257
1258                 return pb->pb_jobid;
1259         }
1260         default:
1261                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1262                 return NULL;
1263         }
1264 }
1265 EXPORT_SYMBOL(lustre_msg_get_jobid);
1266
1267 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1268 {
1269         switch (msg->lm_magic) {
1270         case LUSTRE_MSG_MAGIC_V2:
1271                 return msg->lm_cksum;
1272         default:
1273                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1274                 return 0;
1275         }
1276 }
1277
1278 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1279 {
1280         switch (msg->lm_magic) {
1281         case LUSTRE_MSG_MAGIC_V2: {
1282                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1283                 if (pb == NULL) {
1284                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1285                         return 0;
1286                 }
1287                 return pb->pb_mbits;
1288         }
1289         default:
1290                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1291                 return 0;
1292         }
1293 }
1294
1295 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1296 {
1297         switch (msg->lm_magic) {
1298         case LUSTRE_MSG_MAGIC_V2: {
1299                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1300                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1301
1302                 unsigned int hsize = 4;
1303                 __u32 crc;
1304
1305                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1306                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1307                                        len, NULL, 0, (unsigned char *)&crc,
1308                                        &hsize);
1309                 return crc;
1310         }
1311         default:
1312                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1313                 return 0;
1314         }
1315 }
1316
1317 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1318 {
1319         switch (msg->lm_magic) {
1320         case LUSTRE_MSG_MAGIC_V2: {
1321                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1322                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1323                 pb->pb_handle = *handle;
1324                 return;
1325         }
1326         default:
1327                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1328         }
1329 }
1330
1331 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1332 {
1333         switch (msg->lm_magic) {
1334         case LUSTRE_MSG_MAGIC_V2: {
1335                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1336                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1337                 pb->pb_type = type;
1338                 return;
1339                 }
1340         default:
1341                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1342         }
1343 }
1344
1345 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1346 {
1347         switch (msg->lm_magic) {
1348         case LUSTRE_MSG_MAGIC_V2: {
1349                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1350                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1351                 pb->pb_opc = opc;
1352                 return;
1353         }
1354         default:
1355                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1356         }
1357 }
1358
1359 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1360 {
1361         switch (msg->lm_magic) {
1362         case LUSTRE_MSG_MAGIC_V2: {
1363                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1364                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1365                 pb->pb_last_xid = last_xid;
1366                 return;
1367         }
1368         default:
1369                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1370         }
1371 }
1372 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1373
1374 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1375 {
1376         switch (msg->lm_magic) {
1377         case LUSTRE_MSG_MAGIC_V2: {
1378                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1379                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1380                 pb->pb_tag = tag;
1381                 return;
1382         }
1383         default:
1384                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1385         }
1386 }
1387 EXPORT_SYMBOL(lustre_msg_set_tag);
1388
1389 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1390 {
1391         switch (msg->lm_magic) {
1392         case LUSTRE_MSG_MAGIC_V2: {
1393                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1394                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1395                 pb->pb_last_committed = last_committed;
1396                 return;
1397         }
1398         default:
1399                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1400         }
1401 }
1402
1403 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1404 {
1405         switch (msg->lm_magic) {
1406         case LUSTRE_MSG_MAGIC_V2: {
1407                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1408                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1409                 pb->pb_pre_versions[0] = versions[0];
1410                 pb->pb_pre_versions[1] = versions[1];
1411                 pb->pb_pre_versions[2] = versions[2];
1412                 pb->pb_pre_versions[3] = versions[3];
1413                 return;
1414         }
1415         default:
1416                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1417         }
1418 }
1419 EXPORT_SYMBOL(lustre_msg_set_versions);
1420
1421 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1422 {
1423         switch (msg->lm_magic) {
1424         case LUSTRE_MSG_MAGIC_V2: {
1425                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1426                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1427                 pb->pb_transno = transno;
1428                 return;
1429         }
1430         default:
1431                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1432         }
1433 }
1434 EXPORT_SYMBOL(lustre_msg_set_transno);
1435
1436 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1437 {
1438         switch (msg->lm_magic) {
1439         case LUSTRE_MSG_MAGIC_V2: {
1440                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1441                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1442                 pb->pb_status = status;
1443                 return;
1444         }
1445         default:
1446                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1447         }
1448 }
1449 EXPORT_SYMBOL(lustre_msg_set_status);
1450
1451 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1452 {
1453         switch (msg->lm_magic) {
1454         case LUSTRE_MSG_MAGIC_V2: {
1455                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1456                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1457                 pb->pb_conn_cnt = conn_cnt;
1458                 return;
1459         }
1460         default:
1461                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1462         }
1463 }
1464
1465 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1466 {
1467         switch (msg->lm_magic) {
1468         case LUSTRE_MSG_MAGIC_V2: {
1469                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1470                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1471                 pb->pb_timeout = timeout;
1472                 return;
1473         }
1474         default:
1475                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1476         }
1477 }
1478
1479 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1480 {
1481         switch (msg->lm_magic) {
1482         case LUSTRE_MSG_MAGIC_V2: {
1483                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1484                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1485                 pb->pb_service_time = service_time;
1486                 return;
1487         }
1488         default:
1489                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1490         }
1491 }
1492
1493 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1494 {
1495         switch (msg->lm_magic) {
1496         case LUSTRE_MSG_MAGIC_V2: {
1497                 __u32 opc = lustre_msg_get_opc(msg);
1498                 struct ptlrpc_body *pb;
1499
1500                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1501                  * See the comment in ptlrpc_request_pack(). */
1502                 if (!opc || opc == LDLM_BL_CALLBACK ||
1503                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1504                         return;
1505
1506                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1507                                        sizeof(struct ptlrpc_body));
1508                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1509
1510                 if (jobid != NULL)
1511                         memcpy(pb->pb_jobid, jobid, sizeof(pb->pb_jobid));
1512                 else if (pb->pb_jobid[0] == '\0')
1513                         lustre_get_jobid(pb->pb_jobid, sizeof(pb->pb_jobid));
1514                 return;
1515         }
1516         default:
1517                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1518         }
1519 }
1520 EXPORT_SYMBOL(lustre_msg_set_jobid);
1521
1522 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1523 {
1524         switch (msg->lm_magic) {
1525         case LUSTRE_MSG_MAGIC_V2:
1526                 msg->lm_cksum = cksum;
1527                 return;
1528         default:
1529                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1530         }
1531 }
1532
1533 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1534 {
1535         switch (msg->lm_magic) {
1536         case LUSTRE_MSG_MAGIC_V2: {
1537                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1538
1539                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1540                 pb->pb_mbits = mbits;
1541                 return;
1542         }
1543         default:
1544                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1545         }
1546 }
1547
1548 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1549 {
1550         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1551
1552         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1553                                          req->rq_pill.rc_area[RCL_SERVER]);
1554         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1555                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1556 }
1557 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1558
1559 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1560 {
1561         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1562         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1563                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1564 }
1565
1566 /**
1567  * Send a remote set_info_async.
1568  *
1569  * This may go from client to server or server to client.
1570  */
1571 int do_set_info_async(struct obd_import *imp,
1572                       int opcode, int version,
1573                       size_t keylen, void *key,
1574                       size_t vallen, void *val,
1575                       struct ptlrpc_request_set *set)
1576 {
1577         struct ptlrpc_request *req;
1578         char                  *tmp;
1579         int                    rc;
1580         ENTRY;
1581
1582         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1583         if (req == NULL)
1584                 RETURN(-ENOMEM);
1585
1586         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1587                              RCL_CLIENT, keylen);
1588         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1589                              RCL_CLIENT, vallen);
1590         rc = ptlrpc_request_pack(req, version, opcode);
1591         if (rc) {
1592                 ptlrpc_request_free(req);
1593                 RETURN(rc);
1594         }
1595
1596         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1597         memcpy(tmp, key, keylen);
1598         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1599         memcpy(tmp, val, vallen);
1600
1601         ptlrpc_request_set_replen(req);
1602
1603         if (set) {
1604                 ptlrpc_set_add_req(set, req);
1605                 ptlrpc_check_set(NULL, set);
1606         } else {
1607                 rc = ptlrpc_queue_wait(req);
1608                 ptlrpc_req_finished(req);
1609         }
1610
1611         RETURN(rc);
1612 }
1613 EXPORT_SYMBOL(do_set_info_async);
1614
1615 /* byte flipping routines for all wire types declared in
1616  * lustre_idl.h implemented here.
1617  */
1618 void lustre_swab_ptlrpc_body(struct ptlrpc_body *body)
1619 {
1620         __swab32s(&body->pb_type);
1621         __swab32s(&body->pb_version);
1622         __swab32s(&body->pb_opc);
1623         __swab32s(&body->pb_status);
1624         __swab64s(&body->pb_last_xid);
1625         __swab16s(&body->pb_tag);
1626         CLASSERT(offsetof(typeof(*body), pb_padding0) != 0);
1627         CLASSERT(offsetof(typeof(*body), pb_padding1) != 0);
1628         __swab64s(&body->pb_last_committed);
1629         __swab64s(&body->pb_transno);
1630         __swab32s(&body->pb_flags);
1631         __swab32s(&body->pb_op_flags);
1632         __swab32s(&body->pb_conn_cnt);
1633         __swab32s(&body->pb_timeout);
1634         __swab32s(&body->pb_service_time);
1635         __swab32s(&body->pb_limit);
1636         __swab64s(&body->pb_slv);
1637         __swab64s(&body->pb_pre_versions[0]);
1638         __swab64s(&body->pb_pre_versions[1]);
1639         __swab64s(&body->pb_pre_versions[2]);
1640         __swab64s(&body->pb_pre_versions[3]);
1641         __swab64s(&body->pb_mbits);
1642         CLASSERT(offsetof(typeof(*body), pb_padding64_0) != 0);
1643         CLASSERT(offsetof(typeof(*body), pb_padding64_1) != 0);
1644         CLASSERT(offsetof(typeof(*body), pb_padding64_2) != 0);
1645         /* While we need to maintain compatibility between
1646          * clients and servers without ptlrpc_body_v2 (< 2.3)
1647          * do not swab any fields beyond pb_jobid, as we are
1648          * using this swab function for both ptlrpc_body
1649          * and ptlrpc_body_v2. */
1650         /* pb_jobid is an ASCII string and should not be swabbed */
1651         CLASSERT(offsetof(typeof(*body), pb_jobid) != 0);
1652 }
1653
1654 void lustre_swab_connect(struct obd_connect_data *ocd)
1655 {
1656         __swab64s(&ocd->ocd_connect_flags);
1657         __swab32s(&ocd->ocd_version);
1658         __swab32s(&ocd->ocd_grant);
1659         __swab64s(&ocd->ocd_ibits_known);
1660         __swab32s(&ocd->ocd_index);
1661         __swab32s(&ocd->ocd_brw_size);
1662         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1663          * they are 8-byte values */
1664         __swab16s(&ocd->ocd_grant_tax_kb);
1665         __swab32s(&ocd->ocd_grant_max_blks);
1666         __swab64s(&ocd->ocd_transno);
1667         __swab32s(&ocd->ocd_group);
1668         __swab32s(&ocd->ocd_cksum_types);
1669         __swab32s(&ocd->ocd_instance);
1670         /* Fields after ocd_cksum_types are only accessible by the receiver
1671          * if the corresponding flag in ocd_connect_flags is set. Accessing
1672          * any field after ocd_maxbytes on the receiver without a valid flag
1673          * may result in out-of-bound memory access and kernel oops. */
1674         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1675                 __swab32s(&ocd->ocd_max_easize);
1676         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1677                 __swab64s(&ocd->ocd_maxbytes);
1678         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1679                 __swab16s(&ocd->ocd_maxmodrpcs);
1680         CLASSERT(offsetof(typeof(*ocd), padding0) != 0);
1681         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1682         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1683                 __swab64s(&ocd->ocd_connect_flags2);
1684         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1685         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1686         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1687         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1688         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1689         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1690         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1691         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1692         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1693         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1694         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1695         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1696         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1697 }
1698
1699 static void lustre_swab_ost_layout(struct ost_layout *ol)
1700 {
1701         __swab32s(&ol->ol_stripe_size);
1702         __swab32s(&ol->ol_stripe_count);
1703         __swab64s(&ol->ol_comp_start);
1704         __swab64s(&ol->ol_comp_end);
1705         __swab32s(&ol->ol_comp_id);
1706 }
1707
1708 void lustre_swab_obdo (struct obdo  *o)
1709 {
1710         __swab64s(&o->o_valid);
1711         lustre_swab_ost_id(&o->o_oi);
1712         __swab64s(&o->o_parent_seq);
1713         __swab64s(&o->o_size);
1714         __swab64s(&o->o_mtime);
1715         __swab64s(&o->o_atime);
1716         __swab64s(&o->o_ctime);
1717         __swab64s(&o->o_blocks);
1718         __swab64s(&o->o_grant);
1719         __swab32s(&o->o_blksize);
1720         __swab32s(&o->o_mode);
1721         __swab32s(&o->o_uid);
1722         __swab32s(&o->o_gid);
1723         __swab32s(&o->o_flags);
1724         __swab32s(&o->o_nlink);
1725         __swab32s(&o->o_parent_oid);
1726         __swab32s(&o->o_misc);
1727         __swab64s(&o->o_ioepoch);
1728         __swab32s(&o->o_stripe_idx);
1729         __swab32s(&o->o_parent_ver);
1730         lustre_swab_ost_layout(&o->o_layout);
1731         __swab32s(&o->o_layout_version);
1732         __swab32s(&o->o_uid_h);
1733         __swab32s(&o->o_gid_h);
1734         __swab64s(&o->o_data_version);
1735         __swab32s(&o->o_projid);
1736         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1737         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1738         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1739
1740 }
1741 EXPORT_SYMBOL(lustre_swab_obdo);
1742
1743 void lustre_swab_obd_statfs (struct obd_statfs *os)
1744 {
1745         __swab64s(&os->os_type);
1746         __swab64s(&os->os_blocks);
1747         __swab64s(&os->os_bfree);
1748         __swab64s(&os->os_bavail);
1749         __swab64s(&os->os_files);
1750         __swab64s(&os->os_ffree);
1751         /* no need to swab os_fsid */
1752         __swab32s(&os->os_bsize);
1753         __swab32s(&os->os_namelen);
1754         __swab64s(&os->os_maxbytes);
1755         __swab32s(&os->os_state);
1756         __swab32s(&os->os_fprecreated);
1757         __swab32s(&os->os_granted);
1758         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1759         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1760         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1761         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1762         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1763         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1764         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1765 }
1766
1767 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1768 {
1769         lustre_swab_ost_id(&ioo->ioo_oid);
1770         __swab32s(&ioo->ioo_max_brw);
1771         __swab32s(&ioo->ioo_bufcnt);
1772 }
1773
1774 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1775 {
1776         __swab64s(&nbr->rnb_offset);
1777         __swab32s(&nbr->rnb_len);
1778         __swab32s(&nbr->rnb_flags);
1779 }
1780
1781 void lustre_swab_ost_body (struct ost_body *b)
1782 {
1783         lustre_swab_obdo (&b->oa);
1784 }
1785
1786 void lustre_swab_ost_last_id(u64 *id)
1787 {
1788         __swab64s(id);
1789 }
1790
1791 void lustre_swab_generic_32s(__u32 *val)
1792 {
1793         __swab32s(val);
1794 }
1795
1796 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1797 {
1798         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1799         __swab64s(&desc->gl_flags);
1800         __swab64s(&desc->gl_ver);
1801         __swab64s(&desc->gl_hardlimit);
1802         __swab64s(&desc->gl_softlimit);
1803         __swab64s(&desc->gl_time);
1804         CLASSERT(offsetof(typeof(*desc), gl_pad2) != 0);
1805 }
1806 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1807
1808 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1809 {
1810         __swab32s(&desc->lgbd_status);
1811         __swab32s(&desc->lgbd_timeout);
1812         CLASSERT(offsetof(typeof(*desc), lgbd_padding) != 0);
1813 }
1814 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1815
1816 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1817 {
1818         __swab64s(&lvb->lvb_size);
1819         __swab64s(&lvb->lvb_mtime);
1820         __swab64s(&lvb->lvb_atime);
1821         __swab64s(&lvb->lvb_ctime);
1822         __swab64s(&lvb->lvb_blocks);
1823 }
1824 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1825
1826 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1827 {
1828         __swab64s(&lvb->lvb_size);
1829         __swab64s(&lvb->lvb_mtime);
1830         __swab64s(&lvb->lvb_atime);
1831         __swab64s(&lvb->lvb_ctime);
1832         __swab64s(&lvb->lvb_blocks);
1833         __swab32s(&lvb->lvb_mtime_ns);
1834         __swab32s(&lvb->lvb_atime_ns);
1835         __swab32s(&lvb->lvb_ctime_ns);
1836         __swab32s(&lvb->lvb_padding);
1837 }
1838 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1839
1840 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1841 {
1842         __swab64s(&lvb->lvb_flags);
1843         __swab64s(&lvb->lvb_id_may_rel);
1844         __swab64s(&lvb->lvb_id_rel);
1845         __swab64s(&lvb->lvb_id_qunit);
1846         __swab64s(&lvb->lvb_pad1);
1847 }
1848 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1849
1850 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1851 {
1852         __swab32s(&lvb->lvb_status);
1853         __swab32s(&lvb->lvb_index);
1854         CLASSERT(offsetof(typeof(*lvb), lvb_padding) != 0);
1855 }
1856 EXPORT_SYMBOL(lustre_swab_barrier_lvb);
1857
1858 void lustre_swab_mdt_body (struct mdt_body *b)
1859 {
1860         lustre_swab_lu_fid(&b->mbo_fid1);
1861         lustre_swab_lu_fid(&b->mbo_fid2);
1862         /* handle is opaque */
1863         __swab64s(&b->mbo_valid);
1864         __swab64s(&b->mbo_size);
1865         __swab64s(&b->mbo_mtime);
1866         __swab64s(&b->mbo_atime);
1867         __swab64s(&b->mbo_ctime);
1868         __swab64s(&b->mbo_blocks);
1869         __swab64s(&b->mbo_version);
1870         __swab64s(&b->mbo_t_state);
1871         __swab32s(&b->mbo_fsuid);
1872         __swab32s(&b->mbo_fsgid);
1873         __swab32s(&b->mbo_capability);
1874         __swab32s(&b->mbo_mode);
1875         __swab32s(&b->mbo_uid);
1876         __swab32s(&b->mbo_gid);
1877         __swab32s(&b->mbo_flags);
1878         __swab32s(&b->mbo_rdev);
1879         __swab32s(&b->mbo_nlink);
1880         __swab32s(&b->mbo_layout_gen);
1881         __swab32s(&b->mbo_suppgid);
1882         __swab32s(&b->mbo_eadatasize);
1883         __swab32s(&b->mbo_aclsize);
1884         __swab32s(&b->mbo_max_mdsize);
1885         CLASSERT(offsetof(typeof(*b), mbo_unused3) != 0);
1886         __swab32s(&b->mbo_uid_h);
1887         __swab32s(&b->mbo_gid_h);
1888         __swab32s(&b->mbo_projid);
1889         __swab64s(&b->mbo_dom_size);
1890         __swab64s(&b->mbo_dom_blocks);
1891         CLASSERT(offsetof(typeof(*b), mbo_padding_8) != 0);
1892         CLASSERT(offsetof(typeof(*b), mbo_padding_9) != 0);
1893         CLASSERT(offsetof(typeof(*b), mbo_padding_10) != 0);
1894 }
1895
1896 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1897 {
1898         /* mio_open_handle is opaque */
1899         CLASSERT(offsetof(typeof(*b), mio_unused1) != 0);
1900         CLASSERT(offsetof(typeof(*b), mio_unused2) != 0);
1901         CLASSERT(offsetof(typeof(*b), mio_padding) != 0);
1902 }
1903
1904 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1905 {
1906         int i;
1907
1908         __swab32s(&mti->mti_lustre_ver);
1909         __swab32s(&mti->mti_stripe_index);
1910         __swab32s(&mti->mti_config_ver);
1911         __swab32s(&mti->mti_flags);
1912         __swab32s(&mti->mti_instance);
1913         __swab32s(&mti->mti_nid_count);
1914         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1915         for (i = 0; i < MTI_NIDS_MAX; i++)
1916                 __swab64s(&mti->mti_nids[i]);
1917 }
1918
1919 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1920 {
1921         __u8 i;
1922
1923         __swab64s(&entry->mne_version);
1924         __swab32s(&entry->mne_instance);
1925         __swab32s(&entry->mne_index);
1926         __swab32s(&entry->mne_length);
1927
1928         /* mne_nid_(count|type) must be one byte size because we're gonna
1929          * access it w/o swapping. */
1930         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1931         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1932
1933         /* remove this assertion if ipv6 is supported. */
1934         LASSERT(entry->mne_nid_type == 0);
1935         for (i = 0; i < entry->mne_nid_count; i++) {
1936                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1937                 __swab64s(&entry->u.nids[i]);
1938         }
1939 }
1940 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1941
1942 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1943 {
1944         __swab64s(&body->mcb_offset);
1945         __swab32s(&body->mcb_units);
1946         __swab16s(&body->mcb_type);
1947 }
1948
1949 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1950 {
1951         __swab64s(&body->mcr_offset);
1952         __swab64s(&body->mcr_size);
1953 }
1954
1955 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1956 {
1957         __swab64s (&i->dqi_bgrace);
1958         __swab64s (&i->dqi_igrace);
1959         __swab32s (&i->dqi_flags);
1960         __swab32s (&i->dqi_valid);
1961 }
1962
1963 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1964 {
1965         __swab64s (&b->dqb_ihardlimit);
1966         __swab64s (&b->dqb_isoftlimit);
1967         __swab64s (&b->dqb_curinodes);
1968         __swab64s (&b->dqb_bhardlimit);
1969         __swab64s (&b->dqb_bsoftlimit);
1970         __swab64s (&b->dqb_curspace);
1971         __swab64s (&b->dqb_btime);
1972         __swab64s (&b->dqb_itime);
1973         __swab32s (&b->dqb_valid);
1974         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1975 }
1976
1977 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1978 {
1979         __swab32s (&q->qc_cmd);
1980         __swab32s (&q->qc_type);
1981         __swab32s (&q->qc_id);
1982         __swab32s (&q->qc_stat);
1983         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1984         lustre_swab_obd_dqblk (&q->qc_dqblk);
1985 }
1986
1987 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
1988 {
1989         lustre_swab_lu_fid(&gf->gf_fid);
1990         __swab64s(&gf->gf_recno);
1991         __swab32s(&gf->gf_linkno);
1992         __swab32s(&gf->gf_pathlen);
1993 }
1994 EXPORT_SYMBOL(lustre_swab_fid2path);
1995
1996 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
1997 {
1998         __swab64s(&fm_extent->fe_logical);
1999         __swab64s(&fm_extent->fe_physical);
2000         __swab64s(&fm_extent->fe_length);
2001         __swab32s(&fm_extent->fe_flags);
2002         __swab32s(&fm_extent->fe_device);
2003 }
2004
2005 void lustre_swab_fiemap(struct fiemap *fiemap)
2006 {
2007         __u32 i;
2008
2009         __swab64s(&fiemap->fm_start);
2010         __swab64s(&fiemap->fm_length);
2011         __swab32s(&fiemap->fm_flags);
2012         __swab32s(&fiemap->fm_mapped_extents);
2013         __swab32s(&fiemap->fm_extent_count);
2014         __swab32s(&fiemap->fm_reserved);
2015
2016         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2017                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2018 }
2019
2020 void lustre_swab_idx_info(struct idx_info *ii)
2021 {
2022         __swab32s(&ii->ii_magic);
2023         __swab32s(&ii->ii_flags);
2024         __swab16s(&ii->ii_count);
2025         __swab32s(&ii->ii_attrs);
2026         lustre_swab_lu_fid(&ii->ii_fid);
2027         __swab64s(&ii->ii_version);
2028         __swab64s(&ii->ii_hash_start);
2029         __swab64s(&ii->ii_hash_end);
2030         __swab16s(&ii->ii_keysize);
2031         __swab16s(&ii->ii_recsize);
2032 }
2033
2034 void lustre_swab_lip_header(struct lu_idxpage *lip)
2035 {
2036         /* swab header */
2037         __swab32s(&lip->lip_magic);
2038         __swab16s(&lip->lip_flags);
2039         __swab16s(&lip->lip_nr);
2040 }
2041 EXPORT_SYMBOL(lustre_swab_lip_header);
2042
2043 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2044 {
2045         __swab32s(&rr->rr_opcode);
2046         __swab32s(&rr->rr_cap);
2047         __swab32s(&rr->rr_fsuid);
2048         /* rr_fsuid_h is unused */
2049         __swab32s(&rr->rr_fsgid);
2050         /* rr_fsgid_h is unused */
2051         __swab32s(&rr->rr_suppgid1);
2052         /* rr_suppgid1_h is unused */
2053         __swab32s(&rr->rr_suppgid2);
2054         /* rr_suppgid2_h is unused */
2055         lustre_swab_lu_fid(&rr->rr_fid1);
2056         lustre_swab_lu_fid(&rr->rr_fid2);
2057         __swab64s(&rr->rr_mtime);
2058         __swab64s(&rr->rr_atime);
2059         __swab64s(&rr->rr_ctime);
2060         __swab64s(&rr->rr_size);
2061         __swab64s(&rr->rr_blocks);
2062         __swab32s(&rr->rr_bias);
2063         __swab32s(&rr->rr_mode);
2064         __swab32s(&rr->rr_flags);
2065         __swab32s(&rr->rr_flags_h);
2066         __swab32s(&rr->rr_umask);
2067         __swab16s(&rr->rr_mirror_id);
2068
2069         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2070 };
2071
2072 void lustre_swab_lov_desc (struct lov_desc *ld)
2073 {
2074         __swab32s (&ld->ld_tgt_count);
2075         __swab32s (&ld->ld_active_tgt_count);
2076         __swab32s (&ld->ld_default_stripe_count);
2077         __swab32s (&ld->ld_pattern);
2078         __swab64s (&ld->ld_default_stripe_size);
2079         __swab64s (&ld->ld_default_stripe_offset);
2080         __swab32s (&ld->ld_qos_maxage);
2081         /* uuid endian insensitive */
2082 }
2083 EXPORT_SYMBOL(lustre_swab_lov_desc);
2084
2085 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2086 {
2087         __swab32s (&ld->ld_tgt_count);
2088         __swab32s (&ld->ld_active_tgt_count);
2089         __swab32s (&ld->ld_default_stripe_count);
2090         __swab32s (&ld->ld_pattern);
2091         __swab64s (&ld->ld_default_hash_size);
2092         __swab32s (&ld->ld_qos_maxage);
2093         /* uuid endian insensitive */
2094 }
2095
2096 /* This structure is always in little-endian */
2097 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2098 {
2099         int i;
2100
2101         __swab32s(&lmm1->lmv_magic);
2102         __swab32s(&lmm1->lmv_stripe_count);
2103         __swab32s(&lmm1->lmv_master_mdt_index);
2104         __swab32s(&lmm1->lmv_hash_type);
2105         __swab32s(&lmm1->lmv_layout_version);
2106         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2107                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2108 }
2109
2110 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2111 {
2112         switch (lmm->lmv_magic) {
2113         case LMV_MAGIC_V1:
2114                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2115                 break;
2116         default:
2117                 break;
2118         }
2119 }
2120 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2121
2122 void lustre_swab_lmv_user_md_objects(struct lmv_user_mds_data *lmd,
2123                                      int stripe_count)
2124 {
2125         int i;
2126
2127         for (i = 0; i < stripe_count; i++)
2128                 __swab32s(&(lmd[i].lum_mds));
2129 }
2130 EXPORT_SYMBOL(lustre_swab_lmv_user_md_objects);
2131
2132
2133 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2134 {
2135         __u32 count;
2136
2137         if (lum->lum_magic == LMV_MAGIC_FOREIGN) {
2138                 __swab32s(&lum->lum_magic);
2139                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_length);
2140                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_type);
2141                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_flags);
2142                 return;
2143         }
2144
2145         count = lum->lum_stripe_count;
2146         __swab32s(&lum->lum_magic);
2147         __swab32s(&lum->lum_stripe_count);
2148         __swab32s(&lum->lum_stripe_offset);
2149         __swab32s(&lum->lum_hash_type);
2150         __swab32s(&lum->lum_type);
2151         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2152         switch (lum->lum_magic) {
2153         case LMV_USER_MAGIC_SPECIFIC:
2154                 count = lum->lum_stripe_count;
2155         case __swab32(LMV_USER_MAGIC_SPECIFIC):
2156                 lustre_swab_lmv_user_md_objects(lum->lum_objects, count);
2157                 break;
2158         default:
2159                 break;
2160         }
2161 }
2162 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2163
2164 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2165                               const char *msg)
2166 {
2167         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2168         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2169         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2170         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2171         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2172         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2173         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2174         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2175                lum->lmm_stripe_offset);
2176         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2177                 struct lov_user_md_v3 *v3 = (void *)lum;
2178                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2179         }
2180         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2181                 struct lov_user_md_v3 *v3 = (void *)lum;
2182                 int i;
2183
2184                 if (v3->lmm_pool_name[0] != '\0')
2185                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2186
2187                 CDEBUG(lvl, "\ttarget list:\n");
2188                 for (i = 0; i < v3->lmm_stripe_count; i++)
2189                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2190         }
2191 }
2192
2193 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2194                           const char *msg)
2195 {
2196         struct lov_comp_md_v1   *comp_v1;
2197         int                      i;
2198
2199         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2200                 return;
2201
2202         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2203             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2204                 lustre_print_v1v3(lvl, lum, msg);
2205                 return;
2206         }
2207
2208         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2209                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2210                 return;
2211         }
2212
2213         comp_v1 = (struct lov_comp_md_v1 *)lum;
2214         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2215         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2216         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2217         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2218         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2219         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2220         CDEBUG(lvl, "\tlcm_mirror_count: %#x\n\n", comp_v1->lcm_mirror_count);
2221
2222         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2223                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2224                 struct lov_user_md *v1;
2225
2226                 CDEBUG(lvl, "\tentry %d:\n", i);
2227                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2228                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2229                 if (ent->lcme_flags & LCME_FL_NOSYNC)
2230                         CDEBUG(lvl, "\tlcme_timestamp: %llu\n",
2231                                         ent->lcme_timestamp);
2232                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2233                        ent->lcme_extent.e_start);
2234                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2235                        ent->lcme_extent.e_end);
2236                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2237                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2238
2239                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2240                                 comp_v1->lcm_entries[i].lcme_offset);
2241                 lustre_print_v1v3(lvl, v1, msg);
2242         }
2243 }
2244 EXPORT_SYMBOL(lustre_print_user_md);
2245
2246 static void lustre_swab_lmm_oi(struct ost_id *oi)
2247 {
2248         __swab64s(&oi->oi.oi_id);
2249         __swab64s(&oi->oi.oi_seq);
2250 }
2251
2252 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2253 {
2254         ENTRY;
2255         __swab32s(&lum->lmm_magic);
2256         __swab32s(&lum->lmm_pattern);
2257         lustre_swab_lmm_oi(&lum->lmm_oi);
2258         __swab32s(&lum->lmm_stripe_size);
2259         __swab16s(&lum->lmm_stripe_count);
2260         __swab16s(&lum->lmm_stripe_offset);
2261         EXIT;
2262 }
2263
2264 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2265 {
2266         ENTRY;
2267         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2268         lustre_swab_lov_user_md_common(lum);
2269         EXIT;
2270 }
2271 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2272
2273 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2274 {
2275         ENTRY;
2276         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2277         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2278         /* lmm_pool_name nothing to do with char */
2279         EXIT;
2280 }
2281 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2282
2283 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2284 {
2285         struct lov_comp_md_entry_v1     *ent;
2286         struct lov_user_md_v1   *v1;
2287         struct lov_user_md_v3   *v3;
2288         int     i;
2289         bool    cpu_endian;
2290         __u32   off, size;
2291         __u16   ent_count, stripe_count;
2292         ENTRY;
2293
2294         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2295         ent_count = lum->lcm_entry_count;
2296         if (!cpu_endian)
2297                 __swab16s(&ent_count);
2298
2299         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2300         __swab32s(&lum->lcm_magic);
2301         __swab32s(&lum->lcm_size);
2302         __swab32s(&lum->lcm_layout_gen);
2303         __swab16s(&lum->lcm_flags);
2304         __swab16s(&lum->lcm_entry_count);
2305         __swab16s(&lum->lcm_mirror_count);
2306         CLASSERT(offsetof(typeof(*lum), lcm_padding1) != 0);
2307         CLASSERT(offsetof(typeof(*lum), lcm_padding2) != 0);
2308
2309         for (i = 0; i < ent_count; i++) {
2310                 ent = &lum->lcm_entries[i];
2311                 off = ent->lcme_offset;
2312                 size = ent->lcme_size;
2313
2314                 if (!cpu_endian) {
2315                         __swab32s(&off);
2316                         __swab32s(&size);
2317                 }
2318                 __swab32s(&ent->lcme_id);
2319                 __swab32s(&ent->lcme_flags);
2320                 __swab64s(&ent->lcme_timestamp);
2321                 __swab64s(&ent->lcme_extent.e_start);
2322                 __swab64s(&ent->lcme_extent.e_end);
2323                 __swab32s(&ent->lcme_offset);
2324                 __swab32s(&ent->lcme_size);
2325                 __swab32s(&ent->lcme_layout_gen);
2326                 CLASSERT(offsetof(typeof(*ent), lcme_padding_1) != 0);
2327
2328                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2329                 stripe_count = v1->lmm_stripe_count;
2330                 if (!cpu_endian)
2331                         __swab16s(&stripe_count);
2332
2333                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2334                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2335                         lustre_swab_lov_user_md_v1(v1);
2336                         if (size > sizeof(*v1))
2337                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2338                                                                 stripe_count);
2339                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2340                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2341                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2342                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2343                         v3 = (struct lov_user_md_v3 *)v1;
2344                         lustre_swab_lov_user_md_v3(v3);
2345                         if (size > sizeof(*v3))
2346                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2347                                                                 stripe_count);
2348                 } else {
2349                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2350                 }
2351         }
2352 }
2353 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2354
2355 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2356                                      int stripe_count)
2357 {
2358         int i;
2359         ENTRY;
2360         for (i = 0; i < stripe_count; i++) {
2361                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2362                 __swab32s(&(lod[i].l_ost_gen));
2363                 __swab32s(&(lod[i].l_ost_idx));
2364         }
2365         EXIT;
2366 }
2367 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2368
2369 void lustre_swab_lov_user_md(struct lov_user_md *lum, size_t size)
2370 {
2371         struct lov_user_md_v1 *v1;
2372         struct lov_user_md_v3 *v3;
2373         struct lov_foreign_md *lfm;
2374         __u16 stripe_count;
2375         ENTRY;
2376
2377         CDEBUG(D_IOCTL, "swabbing lov_user_md\n");
2378         switch (lum->lmm_magic) {
2379         case __swab32(LOV_MAGIC_V1):
2380         case LOV_USER_MAGIC_V1:
2381         {
2382                 v1 = (struct lov_user_md_v1 *)lum;
2383                 stripe_count = v1->lmm_stripe_count;
2384
2385                 if (lum->lmm_magic != LOV_USER_MAGIC_V1)
2386                         __swab16s(&stripe_count);
2387
2388                 lustre_swab_lov_user_md_v1(v1);
2389                 if (size > sizeof(*v1))
2390                         lustre_swab_lov_user_md_objects(v1->lmm_objects,
2391                                                         stripe_count);
2392
2393                 break;
2394         }
2395         case __swab32(LOV_MAGIC_V3):
2396         case LOV_USER_MAGIC_V3:
2397         {
2398                 v3 = (struct lov_user_md_v3 *)lum;
2399                 stripe_count = v3->lmm_stripe_count;
2400
2401                 if (lum->lmm_magic != LOV_USER_MAGIC_V3)
2402                         __swab16s(&stripe_count);
2403
2404                 lustre_swab_lov_user_md_v3(v3);
2405                 if (size > sizeof(*v3))
2406                         lustre_swab_lov_user_md_objects(v3->lmm_objects,
2407                                                         stripe_count);
2408                 break;
2409         }
2410         case __swab32(LOV_USER_MAGIC_SPECIFIC):
2411         case LOV_USER_MAGIC_SPECIFIC:
2412         {
2413                 v3 = (struct lov_user_md_v3 *)lum;
2414                 stripe_count = v3->lmm_stripe_count;
2415
2416                 if (lum->lmm_magic != LOV_USER_MAGIC_SPECIFIC)
2417                         __swab16s(&stripe_count);
2418
2419                 lustre_swab_lov_user_md_v3(v3);
2420                 lustre_swab_lov_user_md_objects(v3->lmm_objects, stripe_count);
2421                 break;
2422         }
2423         case __swab32(LOV_MAGIC_COMP_V1):
2424         case LOV_USER_MAGIC_COMP_V1:
2425                 lustre_swab_lov_comp_md_v1((struct lov_comp_md_v1 *)lum);
2426                 break;
2427         case __swab32(LOV_MAGIC_FOREIGN):
2428         case LOV_USER_MAGIC_FOREIGN:
2429         {
2430                 lfm = (struct lov_foreign_md *)lum;
2431                 __swab32s(&lfm->lfm_magic);
2432                 __swab32s(&lfm->lfm_length);
2433                 __swab32s(&lfm->lfm_type);
2434                 __swab32s(&lfm->lfm_flags);
2435                 break;
2436         }
2437         default:
2438                 CDEBUG(D_IOCTL, "Invalid LOV magic %08x\n", lum->lmm_magic);
2439         }
2440 }
2441 EXPORT_SYMBOL(lustre_swab_lov_user_md);
2442
2443 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2444 {
2445         ENTRY;
2446         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2447         __swab32s(&lmm->lmm_magic);
2448         __swab32s(&lmm->lmm_pattern);
2449         lustre_swab_lmm_oi(&lmm->lmm_oi);
2450         __swab32s(&lmm->lmm_stripe_size);
2451         __swab16s(&lmm->lmm_stripe_count);
2452         __swab16s(&lmm->lmm_layout_gen);
2453         EXIT;
2454 }
2455 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2456
2457 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2458 {
2459         int  i;
2460
2461         for (i = 0; i < RES_NAME_SIZE; i++)
2462                 __swab64s (&id->name[i]);
2463 }
2464
2465 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2466 {
2467         /* the lock data is a union and the first two fields are always an
2468          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2469          * data the same way. */
2470         __swab64s(&d->l_extent.start);
2471         __swab64s(&d->l_extent.end);
2472         __swab64s(&d->l_extent.gid);
2473         __swab64s(&d->l_flock.lfw_owner);
2474         __swab32s(&d->l_flock.lfw_pid);
2475 }
2476
2477 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2478 {
2479         __swab64s(&i->opc);
2480 }
2481
2482 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2483 {
2484         __swab32s(&r->lr_type);
2485         CLASSERT(offsetof(typeof(*r), lr_pad) != 0);
2486         lustre_swab_ldlm_res_id(&r->lr_name);
2487 }
2488
2489 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2490 {
2491         lustre_swab_ldlm_resource_desc (&l->l_resource);
2492         __swab32s (&l->l_req_mode);
2493         __swab32s (&l->l_granted_mode);
2494         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2495 }
2496
2497 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2498 {
2499         __swab32s (&rq->lock_flags);
2500         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2501         __swab32s (&rq->lock_count);
2502         /* lock_handle[] opaque */
2503 }
2504
2505 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2506 {
2507         __swab32s (&r->lock_flags);
2508         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2509         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2510         /* lock_handle opaque */
2511         __swab64s (&r->lock_policy_res1);
2512         __swab64s (&r->lock_policy_res2);
2513 }
2514
2515 void lustre_swab_quota_body(struct quota_body *b)
2516 {
2517         lustre_swab_lu_fid(&b->qb_fid);
2518         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2519         __swab32s(&b->qb_flags);
2520         __swab64s(&b->qb_count);
2521         __swab64s(&b->qb_usage);
2522         __swab64s(&b->qb_slv_ver);
2523 }
2524
2525 /* Dump functions */
2526 void dump_ioo(struct obd_ioobj *ioo)
2527 {
2528         CDEBUG(D_RPCTRACE,
2529                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2530                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2531                ioo->ioo_bufcnt);
2532 }
2533
2534 void dump_rniobuf(struct niobuf_remote *nb)
2535 {
2536         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2537                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2538 }
2539
2540 void dump_obdo(struct obdo *oa)
2541 {
2542         u64 valid = oa->o_valid;
2543
2544         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2545         if (valid & OBD_MD_FLID)
2546                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2547         if (valid & OBD_MD_FLFID)
2548                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2549                        oa->o_parent_seq);
2550         if (valid & OBD_MD_FLSIZE)
2551                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2552         if (valid & OBD_MD_FLMTIME)
2553                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2554         if (valid & OBD_MD_FLATIME)
2555                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2556         if (valid & OBD_MD_FLCTIME)
2557                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2558         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2559                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2560         if (valid & OBD_MD_FLGRANT)
2561                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2562         if (valid & OBD_MD_FLBLKSZ)
2563                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2564         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2565                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2566                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2567                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2568         if (valid & OBD_MD_FLUID)
2569                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2570         if (valid & OBD_MD_FLUID)
2571                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2572         if (valid & OBD_MD_FLGID)
2573                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2574         if (valid & OBD_MD_FLGID)
2575                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2576         if (valid & OBD_MD_FLFLAGS)
2577                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2578         if (valid & OBD_MD_FLNLINK)
2579                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2580         else if (valid & OBD_MD_FLCKSUM)
2581                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2582                        oa->o_nlink);
2583         if (valid & OBD_MD_FLPARENT)
2584                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2585                        oa->o_parent_oid);
2586         if (valid & OBD_MD_FLFID) {
2587                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2588                        oa->o_stripe_idx);
2589                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2590                        oa->o_parent_ver);
2591         }
2592         if (valid & OBD_MD_FLHANDLE)
2593                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2594                        oa->o_handle.cookie);
2595 }
2596
2597 void dump_ost_body(struct ost_body *ob)
2598 {
2599         dump_obdo(&ob->oa);
2600 }
2601
2602 void dump_rcs(__u32 *rc)
2603 {
2604         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2605 }
2606
2607 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2608 {
2609         LASSERT(req->rq_reqmsg);
2610
2611         switch (req->rq_reqmsg->lm_magic) {
2612         case LUSTRE_MSG_MAGIC_V2:
2613                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2614         default:
2615                 CERROR("bad lustre msg magic: %#08X\n",
2616                        req->rq_reqmsg->lm_magic);
2617         }
2618         return 0;
2619 }
2620
2621 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2622 {
2623         if (unlikely(!req->rq_repmsg))
2624                 return 0;
2625
2626         switch (req->rq_repmsg->lm_magic) {
2627         case LUSTRE_MSG_MAGIC_V2:
2628                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2629         default:
2630                 /* uninitialized yet */
2631                 return 0;
2632         }
2633 }
2634
2635 void _debug_req(struct ptlrpc_request *req,
2636                 struct libcfs_debug_msg_data *msgdata, const char *fmt, ...)
2637 {
2638         bool req_ok = req->rq_reqmsg != NULL;
2639         bool rep_ok = false;
2640         lnet_nid_t nid = LNET_NID_ANY;
2641         struct va_format vaf;
2642         va_list args;
2643         int rep_flags = -1;
2644         int rep_status = -1;
2645
2646         spin_lock(&req->rq_early_free_lock);
2647         if (req->rq_repmsg)
2648                 rep_ok = true;
2649
2650         if (ptlrpc_req_need_swab(req)) {
2651                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2652                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2653         }
2654
2655         if (rep_ok) {
2656                 rep_flags = lustre_msg_get_flags(req->rq_repmsg);
2657                 rep_status = lustre_msg_get_status(req->rq_repmsg);
2658         }
2659         spin_unlock(&req->rq_early_free_lock);
2660
2661         if (req->rq_import && req->rq_import->imp_connection)
2662                 nid = req->rq_import->imp_connection->c_peer.nid;
2663         else if (req->rq_export && req->rq_export->exp_connection)
2664                 nid = req->rq_export->exp_connection->c_peer.nid;
2665
2666         va_start(args, fmt);
2667         vaf.fmt = fmt;
2668         vaf.va = &args;
2669         libcfs_debug_msg(msgdata,
2670                          "%pV req@%p x%llu/t%lld(%lld) o%d->%s@%s:%d/%d lens %d/%d e %d to %lld dl %lld ref %d fl " REQ_FLAGS_FMT "/%x/%x rc %d/%d job:'%s'\n",
2671                          &vaf,
2672                          req, req->rq_xid, req->rq_transno,
2673                          req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2674                          req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2675                          req->rq_import ?
2676                          req->rq_import->imp_obd->obd_name :
2677                          req->rq_export ?
2678                          req->rq_export->exp_client_uuid.uuid :
2679                          "<?>",
2680                          libcfs_nid2str(nid),
2681                          req->rq_request_portal, req->rq_reply_portal,
2682                          req->rq_reqlen, req->rq_replen,
2683                          req->rq_early_count, (s64)req->rq_timedout,
2684                          (s64)req->rq_deadline,
2685                          atomic_read(&req->rq_refcount),
2686                          DEBUG_REQ_FLAGS(req),
2687                          req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2688                          rep_flags, req->rq_status, rep_status,
2689                          req_ok ? lustre_msg_get_jobid(req->rq_reqmsg) ?: ""
2690                                 : "");
2691         va_end(args);
2692 }
2693 EXPORT_SYMBOL(_debug_req);
2694
2695 void lustre_swab_lustre_capa(struct lustre_capa *c)
2696 {
2697         lustre_swab_lu_fid(&c->lc_fid);
2698         __swab64s (&c->lc_opc);
2699         __swab64s (&c->lc_uid);
2700         __swab64s (&c->lc_gid);
2701         __swab32s (&c->lc_flags);
2702         __swab32s (&c->lc_keyid);
2703         __swab32s (&c->lc_timeout);
2704         __swab32s (&c->lc_expiry);
2705 }
2706
2707 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2708 {
2709         __swab64s (&k->lk_seq);
2710         __swab32s (&k->lk_keyid);
2711         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2712 }
2713
2714 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2715 {
2716         __swab32s(&state->hus_states);
2717         __swab32s(&state->hus_archive_id);
2718 }
2719
2720 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2721 {
2722         __swab32s(&hss->hss_valid);
2723         __swab64s(&hss->hss_setmask);
2724         __swab64s(&hss->hss_clearmask);
2725         __swab32s(&hss->hss_archive_id);
2726 }
2727
2728 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2729 {
2730         __swab64s(&extent->offset);
2731         __swab64s(&extent->length);
2732 }
2733
2734 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2735 {
2736         __swab32s(&action->hca_state);
2737         __swab32s(&action->hca_action);
2738         lustre_swab_hsm_extent(&action->hca_location);
2739 }
2740
2741 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2742 {
2743         lustre_swab_lu_fid(&hui->hui_fid);
2744         lustre_swab_hsm_extent(&hui->hui_extent);
2745 }
2746
2747 void lustre_swab_lu_extent(struct lu_extent *le)
2748 {
2749         __swab64s(&le->e_start);
2750         __swab64s(&le->e_end);
2751 }
2752
2753 void lustre_swab_layout_intent(struct layout_intent *li)
2754 {
2755         __swab32s(&li->li_opc);
2756         __swab32s(&li->li_flags);
2757         lustre_swab_lu_extent(&li->li_extent);
2758 }
2759
2760 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2761 {
2762         lustre_swab_lu_fid(&hpk->hpk_fid);
2763         __swab64s(&hpk->hpk_cookie);
2764         __swab64s(&hpk->hpk_extent.offset);
2765         __swab64s(&hpk->hpk_extent.length);
2766         __swab16s(&hpk->hpk_flags);
2767         __swab16s(&hpk->hpk_errval);
2768 }
2769
2770 void lustre_swab_hsm_request(struct hsm_request *hr)
2771 {
2772         __swab32s(&hr->hr_action);
2773         __swab32s(&hr->hr_archive_id);
2774         __swab64s(&hr->hr_flags);
2775         __swab32s(&hr->hr_itemcount);
2776         __swab32s(&hr->hr_data_len);
2777 }
2778
2779 void lustre_swab_object_update(struct object_update *ou)
2780 {
2781         struct object_update_param *param;
2782         size_t  i;
2783
2784         __swab16s(&ou->ou_type);
2785         __swab16s(&ou->ou_params_count);
2786         __swab32s(&ou->ou_result_size);
2787         __swab32s(&ou->ou_flags);
2788         __swab32s(&ou->ou_padding1);
2789         __swab64s(&ou->ou_batchid);
2790         lustre_swab_lu_fid(&ou->ou_fid);
2791         param = &ou->ou_params[0];
2792         for (i = 0; i < ou->ou_params_count; i++) {
2793                 __swab16s(&param->oup_len);
2794                 __swab16s(&param->oup_padding);
2795                 __swab32s(&param->oup_padding2);
2796                 param = (struct object_update_param *)((char *)param +
2797                          object_update_param_size(param));
2798         }
2799 }
2800
2801 void lustre_swab_object_update_request(struct object_update_request *our)
2802 {
2803         size_t i;
2804         __swab32s(&our->ourq_magic);
2805         __swab16s(&our->ourq_count);
2806         __swab16s(&our->ourq_padding);
2807         for (i = 0; i < our->ourq_count; i++) {
2808                 struct object_update *ou;
2809
2810                 ou = object_update_request_get(our, i, NULL);
2811                 if (ou == NULL)
2812                         return;
2813                 lustre_swab_object_update(ou);
2814         }
2815 }
2816
2817 void lustre_swab_object_update_result(struct object_update_result *our)
2818 {
2819         __swab32s(&our->our_rc);
2820         __swab16s(&our->our_datalen);
2821         __swab16s(&our->our_padding);
2822 }
2823
2824 void lustre_swab_object_update_reply(struct object_update_reply *our)
2825 {
2826         size_t i;
2827
2828         __swab32s(&our->ourp_magic);
2829         __swab16s(&our->ourp_count);
2830         __swab16s(&our->ourp_padding);
2831         for (i = 0; i < our->ourp_count; i++) {
2832                 struct object_update_result *ourp;
2833
2834                 __swab16s(&our->ourp_lens[i]);
2835                 ourp = object_update_result_get(our, i, NULL);
2836                 if (ourp == NULL)
2837                         return;
2838                 lustre_swab_object_update_result(ourp);
2839         }
2840 }
2841
2842 void lustre_swab_out_update_header(struct out_update_header *ouh)
2843 {
2844         __swab32s(&ouh->ouh_magic);
2845         __swab32s(&ouh->ouh_count);
2846         __swab32s(&ouh->ouh_inline_length);
2847         __swab32s(&ouh->ouh_reply_size);
2848 }
2849 EXPORT_SYMBOL(lustre_swab_out_update_header);
2850
2851 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2852 {
2853         __swab32s(&oub->oub_size);
2854         __swab32s(&oub->oub_padding);
2855 }
2856 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2857
2858 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2859 {
2860         __swab64s(&msl->msl_flags);
2861 }
2862
2863 void lustre_swab_close_data(struct close_data *cd)
2864 {
2865         lustre_swab_lu_fid(&cd->cd_fid);
2866         __swab64s(&cd->cd_data_version);
2867 }
2868
2869 void lustre_swab_close_data_resync_done(struct close_data_resync_done *resync)
2870 {
2871         int i;
2872
2873         __swab32s(&resync->resync_count);
2874         /* after swab, resync_count must in CPU endian */
2875         if (resync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
2876                 for (i = 0; i < resync->resync_count; i++)
2877                         __swab32s(&resync->resync_ids_inline[i]);
2878         }
2879 }
2880 EXPORT_SYMBOL(lustre_swab_close_data_resync_done);
2881
2882 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2883 {
2884         __swab32s(&lr->lr_event);
2885         __swab32s(&lr->lr_index);
2886         __swab32s(&lr->lr_flags);
2887         __swab32s(&lr->lr_valid);
2888         __swab32s(&lr->lr_speed);
2889         __swab16s(&lr->lr_version);
2890         __swab16s(&lr->lr_active);
2891         __swab16s(&lr->lr_param);
2892         __swab16s(&lr->lr_async_windows);
2893         __swab32s(&lr->lr_flags);
2894         lustre_swab_lu_fid(&lr->lr_fid);
2895         lustre_swab_lu_fid(&lr->lr_fid2);
2896         __swab32s(&lr->lr_comp_id);
2897         CLASSERT(offsetof(typeof(*lr), lr_padding_0) != 0);
2898         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2899         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2900         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2901 }
2902
2903 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2904 {
2905         __swab32s(&lr->lr_status);
2906         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2907         __swab64s(&lr->lr_repaired);
2908 }
2909
2910 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
2911 {
2912         lustre_swab_lu_fid(&rec->lor_fid);
2913         __swab32s(&rec->lor_uid);
2914         __swab32s(&rec->lor_gid);
2915 }
2916
2917 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2918 {
2919         lustre_swab_lu_fid(&ent->loe_key);
2920         lustre_swab_orphan_rec(&ent->loe_rec);
2921 }
2922 EXPORT_SYMBOL(lustre_swab_orphan_ent);
2923
2924 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
2925 {
2926         lustre_swab_lu_fid(&ent->loe_key);
2927         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2928         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2929         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding) != 0);
2930 }
2931 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
2932
2933 void lustre_swab_orphan_ent_v3(struct lu_orphan_ent_v3 *ent)
2934 {
2935         lustre_swab_lu_fid(&ent->loe_key);
2936         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2937         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2938         __swab32s(&ent->loe_rec.lor_layout_version);
2939         __swab32s(&ent->loe_rec.lor_range);
2940         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding_1) != 0);
2941         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding_2) != 0);
2942 }
2943 EXPORT_SYMBOL(lustre_swab_orphan_ent_v3);
2944
2945 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
2946 {
2947         __swab16s(&ladvise->lla_advice);
2948         __swab16s(&ladvise->lla_value1);
2949         __swab32s(&ladvise->lla_value2);
2950         __swab64s(&ladvise->lla_start);
2951         __swab64s(&ladvise->lla_end);
2952         __swab32s(&ladvise->lla_value3);
2953         __swab32s(&ladvise->lla_value4);
2954 }
2955 EXPORT_SYMBOL(lustre_swab_ladvise);
2956
2957 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
2958 {
2959         __swab32s(&ladvise_hdr->lah_magic);
2960         __swab32s(&ladvise_hdr->lah_count);
2961         __swab64s(&ladvise_hdr->lah_flags);
2962         __swab32s(&ladvise_hdr->lah_value1);
2963         __swab32s(&ladvise_hdr->lah_value2);
2964         __swab64s(&ladvise_hdr->lah_value3);
2965 }
2966 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);