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 int 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         else
  88                 return (ptlrpc_rep_need_swab(req) &&
  89                         !lustre_rep_swabbed(req, index));
  90 }
  91
  92 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  93                                               enum lustre_msg_version version)
  94 {
  95         enum lustre_msg_version ver = lustre_msg_get_version(msg);
  96
  97         return (ver & LUSTRE_VERSION_MASK) != version;
  98 }
  99
 100 int lustre_msg_check_version(struct lustre_msg *msg,
 101                              enum lustre_msg_version version)
 102 {
 103 #define LUSTRE_MSG_MAGIC_V1 0x0BD00BD0
 104         switch (msg->lm_magic) {
 105         case LUSTRE_MSG_MAGIC_V1:
 106                 CERROR("msg v1 not supported - please upgrade you system\n");
 107                 return -EINVAL;
 108         case LUSTRE_MSG_MAGIC_V2:
 109                 return lustre_msg_check_version_v2(msg, version);
 110         default:
 111                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 112                 return -EPROTO;
 113         }
 114 #undef LUSTRE_MSG_MAGIC_V1
 115 }
 116
 117 /* early reply size */
 118 __u32 lustre_msg_early_size()
 119 {
 120         static __u32 size;
 121         if (!size) {
 122                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 123                  * with the old client (< 2.3) which doesn't have pb_jobid
 124                  * in the ptlrpc_body.
 125                  *
 126                  * XXX Remove this whenever we dorp interoprability with such
 127                  *     client.
 128                  */
 129                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 130                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 131         }
 132         return size;
 133 }
 134 EXPORT_SYMBOL(lustre_msg_early_size);
 135
 136 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
 137 {
 138         __u32 size;
 139         int i;
 140
 141         size = lustre_msg_hdr_size_v2(count);
 142         for (i = 0; i < count; i++)
 143                 size += cfs_size_round(lengths[i]);
 144
 145         return size;
 146 }
 147 EXPORT_SYMBOL(lustre_msg_size_v2);
 148
 149 /* This returns the size of the buffer that is required to hold a lustre_msg
 150  * with the given sub-buffer lengths.
 151  * NOTE: this should only be used for NEW requests, and should always be
 152  *       in the form of a v2 request.  If this is a connection to a v1
 153  *       target then the first buffer will be stripped because the ptlrpc
 154  *       data is part of the lustre_msg_v1 header. b=14043 */
 155 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 156 {
 157         __u32 size[] = { sizeof(struct ptlrpc_body) };
 158
 159         if (!lens) {
 160                 LASSERT(count == 1);
 161                 lens = size;
 162         }
 163
 164         LASSERT(count > 0);
 165         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 166
 167         switch (magic) {
 168         case LUSTRE_MSG_MAGIC_V2:
 169                 return lustre_msg_size_v2(count, lens);
 170         default:
 171                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 172                 return 0;
 173         }
 174 }
 175
 176 /* This is used to determine the size of a buffer that was already packed
 177  * and will correctly handle the different message formats. */
 178 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 179 {
 180         switch (msg->lm_magic) {
 181         case LUSTRE_MSG_MAGIC_V2:
 182                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 183         default:
 184                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 185                 return 0;
 186         }
 187 }
 188 EXPORT_SYMBOL(lustre_packed_msg_size);
 189
 190 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 191                         char **bufs)
 192 {
 193         char *ptr;
 194         int i;
 195
 196         msg->lm_bufcount = count;
 197         /* XXX: lm_secflvr uninitialized here */
 198         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 199
 200         for (i = 0; i < count; i++)
 201                 msg->lm_buflens[i] = lens[i];
 202
 203         if (bufs == NULL)
 204                 return;
 205
 206         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 207         for (i = 0; i < count; i++) {
 208                 char *tmp = bufs[i];
 209
 210                 if (tmp)
 211                         memcpy(ptr, tmp, lens[i]);
 212                 ptr += cfs_size_round(lens[i]);
 213         }
 214 }
 215 EXPORT_SYMBOL(lustre_init_msg_v2);
 216
 217 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 218                                   int count, __u32 *lens, char **bufs)
 219 {
 220         int reqlen, rc;
 221
 222         reqlen = lustre_msg_size_v2(count, lens);
 223
 224         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 225         if (rc)
 226                 return rc;
 227
 228         req->rq_reqlen = reqlen;
 229
 230         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 231         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 232         return 0;
 233 }
 234
 235 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 236                         __u32 *lens, char **bufs)
 237 {
 238         __u32 size[] = { sizeof(struct ptlrpc_body) };
 239
 240         if (!lens) {
 241                 LASSERT(count == 1);
 242                 lens = size;
 243         }
 244
 245         LASSERT(count > 0);
 246         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 247
 248         /* only use new format, we don't need to be compatible with 1.4 */
 249         magic = LUSTRE_MSG_MAGIC_V2;
 250
 251         switch (magic) {
 252         case LUSTRE_MSG_MAGIC_V2:
 253                 return lustre_pack_request_v2(req, count, lens, bufs);
 254         default:
 255                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 256                 return -EINVAL;
 257         }
 258 }
 259
 260 #if RS_DEBUG
 261 struct list_head ptlrpc_rs_debug_lru =
 262         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 263 spinlock_t ptlrpc_rs_debug_lock;
 264
 265 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 266 do {                                                                    \
 267         spin_lock(&ptlrpc_rs_debug_lock);                               \
 268         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 269         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 270 } while (0)
 271
 272 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 273 do {                                                                    \
 274         spin_lock(&ptlrpc_rs_debug_lock);                               \
 275         list_del(&(rs)->rs_debug_list);                         \
 276         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 277 } while (0)
 278 #else
 279 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 280 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 281 #endif
 282
 283 struct ptlrpc_reply_state *
 284 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 285 {
 286         struct ptlrpc_reply_state *rs = NULL;
 287
 288         spin_lock(&svcpt->scp_rep_lock);
 289
 290         /* See if we have anything in a pool, and wait if nothing */
 291         while (list_empty(&svcpt->scp_rep_idle)) {
 292                 struct l_wait_info      lwi;
 293                 int                     rc;
 294
 295                 spin_unlock(&svcpt->scp_rep_lock);
 296                 /* If we cannot get anything for some long time, we better
 297                  * bail out instead of waiting infinitely */
 298                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 299                 rc = l_wait_event(svcpt->scp_rep_waitq,
 300                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 301                 if (rc != 0)
 302                         goto out;
 303                 spin_lock(&svcpt->scp_rep_lock);
 304         }
 305
 306         rs = list_entry(svcpt->scp_rep_idle.next,
 307                             struct ptlrpc_reply_state, rs_list);
 308         list_del(&rs->rs_list);
 309
 310         spin_unlock(&svcpt->scp_rep_lock);
 311
 312         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 313         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 314         rs->rs_svcpt = svcpt;
 315         rs->rs_prealloc = 1;
 316 out:
 317         return rs;
 318 }
 319
 320 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 321 {
 322         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 323
 324         spin_lock(&svcpt->scp_rep_lock);
 325         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 326         spin_unlock(&svcpt->scp_rep_lock);
 327         wake_up(&svcpt->scp_rep_waitq);
 328 }
 329
 330 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 331                          __u32 *lens, char **bufs, int flags)
 332 {
 333         struct ptlrpc_reply_state *rs;
 334         int                        msg_len, rc;
 335         ENTRY;
 336
 337         LASSERT(req->rq_reply_state == NULL);
 338
 339         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 340                 spin_lock(&req->rq_lock);
 341                 req->rq_packed_final = 1;
 342                 spin_unlock(&req->rq_lock);
 343         }
 344
 345         msg_len = lustre_msg_size_v2(count, lens);
 346         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 347         if (rc)
 348                 RETURN(rc);
 349
 350         rs = req->rq_reply_state;
 351         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 352         rs->rs_cb_id.cbid_fn = reply_out_callback;
 353         rs->rs_cb_id.cbid_arg = rs;
 354         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 355         INIT_LIST_HEAD(&rs->rs_exp_list);
 356         INIT_LIST_HEAD(&rs->rs_obd_list);
 357         INIT_LIST_HEAD(&rs->rs_list);
 358         spin_lock_init(&rs->rs_lock);
 359
 360         req->rq_replen = msg_len;
 361         req->rq_reply_state = rs;
 362         req->rq_repmsg = rs->rs_msg;
 363
 364         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 365         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 366
 367         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 368
 369         RETURN(0);
 370 }
 371 EXPORT_SYMBOL(lustre_pack_reply_v2);
 372
 373 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 374                             char **bufs, int flags)
 375 {
 376         int rc = 0;
 377         __u32 size[] = { sizeof(struct ptlrpc_body) };
 378
 379         if (!lens) {
 380                 LASSERT(count == 1);
 381                 lens = size;
 382         }
 383
 384         LASSERT(count > 0);
 385         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 386
 387         switch (req->rq_reqmsg->lm_magic) {
 388         case LUSTRE_MSG_MAGIC_V2:
 389                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 390                 break;
 391         default:
 392                 LASSERTF(0, "incorrect message magic: %08x\n",
 393                          req->rq_reqmsg->lm_magic);
 394                 rc = -EINVAL;
 395         }
 396         if (rc != 0)
 397                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 398                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 399         return rc;
 400 }
 401
 402 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 403                       char **bufs)
 404 {
 405         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 406 }
 407 EXPORT_SYMBOL(lustre_pack_reply);
 408
 409 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
 410 {
 411         __u32 i, offset, buflen, bufcount;
 412
 413         LASSERT(m != NULL);
 414
 415         bufcount = m->lm_bufcount;
 416         if (unlikely(n >= bufcount)) {
 417                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 418                        m, n, bufcount);
 419                 return NULL;
 420         }
 421
 422         buflen = m->lm_buflens[n];
 423         if (unlikely(buflen < min_size)) {
 424                 CERROR("msg %p buffer[%d] size %d too small "
 425                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 426                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 427                 return NULL;
 428         }
 429
 430         offset = lustre_msg_hdr_size_v2(bufcount);
 431         for (i = 0; i < n; i++)
 432                 offset += cfs_size_round(m->lm_buflens[i]);
 433
 434         return (char *)m + offset;
 435 }
 436
 437 void *lustre_msg_buf(struct lustre_msg *m, __u32 n, __u32 min_size)
 438 {
 439         switch (m->lm_magic) {
 440         case LUSTRE_MSG_MAGIC_V2:
 441                 return lustre_msg_buf_v2(m, n, min_size);
 442         default:
 443                 LASSERTF(0, "incorrect message magic: %08x (msg:%p)\n",
 444                          m->lm_magic, m);
 445                 return NULL;
 446         }
 447 }
 448 EXPORT_SYMBOL(lustre_msg_buf);
 449
 450 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 451                                 unsigned int newlen, int move_data)
 452 {
 453         char   *tail = NULL, *newpos;
 454         int     tail_len = 0, n;
 455
 456         LASSERT(msg);
 457         LASSERT(msg->lm_bufcount > segment);
 458         LASSERT(msg->lm_buflens[segment] >= newlen);
 459
 460         if (msg->lm_buflens[segment] == newlen)
 461                 goto out;
 462
 463         if (move_data && msg->lm_bufcount > segment + 1) {
 464                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 465                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 466                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 467         }
 468
 469         msg->lm_buflens[segment] = newlen;
 470
 471         if (tail && tail_len) {
 472                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 473                 LASSERT(newpos <= tail);
 474                 if (newpos != tail)
 475                         memmove(newpos, tail, tail_len);
 476         }
 477 out:
 478         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 479 }
 480
 481 /*
 482  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 483  * we also move data forward from @segment + 1.
 484  *
 485  * if @newlen == 0, we remove the segment completely, but we still keep the
 486  * totally bufcount the same to save possible data moving. this will leave a
 487  * unused segment with size 0 at the tail, but that's ok.
 488  *
 489  * return new msg size after shrinking.
 490  *
 491  * CAUTION:
 492  * + if any buffers higher than @segment has been filled in, must call shrink
 493  *   with non-zero @move_data.
 494  * + caller should NOT keep pointers to msg buffers which higher than @segment
 495  *   after call shrink.
 496  */
 497 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 498                       unsigned int newlen, int move_data)
 499 {
 500         switch (msg->lm_magic) {
 501         case LUSTRE_MSG_MAGIC_V2:
 502                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 503         default:
 504                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 505         }
 506 }
 507 EXPORT_SYMBOL(lustre_shrink_msg);
 508
 509 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 510 {
 511         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 512
 513         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 514         LASSERT(!rs->rs_difficult || rs->rs_handled);
 515         LASSERT(!rs->rs_on_net);
 516         LASSERT(!rs->rs_scheduled);
 517         LASSERT(rs->rs_export == NULL);
 518         LASSERT(rs->rs_nlocks == 0);
 519         LASSERT(list_empty(&rs->rs_exp_list));
 520         LASSERT(list_empty(&rs->rs_obd_list));
 521
 522         sptlrpc_svc_free_rs(rs);
 523 }
 524
 525 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 526 {
 527         int swabbed, required_len, i;
 528
 529         /* Now we know the sender speaks my language. */
 530         required_len = lustre_msg_hdr_size_v2(0);
 531         if (len < required_len) {
 532                 /* can't even look inside the message */
 533                 CERROR("message length %d too small for lustre_msg\n", len);
 534                 return -EINVAL;
 535         }
 536
 537         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 538
 539         if (swabbed) {
 540                 __swab32s(&m->lm_magic);
 541                 __swab32s(&m->lm_bufcount);
 542                 __swab32s(&m->lm_secflvr);
 543                 __swab32s(&m->lm_repsize);
 544                 __swab32s(&m->lm_cksum);
 545                 __swab32s(&m->lm_flags);
 546                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 547                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 548         }
 549
 550         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 551         if (len < required_len) {
 552                 /* didn't receive all the buffer lengths */
 553                 CERROR ("message length %d too small for %d buflens\n",
 554                         len, m->lm_bufcount);
 555                 return -EINVAL;
 556         }
 557
 558         for (i = 0; i < m->lm_bufcount; i++) {
 559                 if (swabbed)
 560                         __swab32s(&m->lm_buflens[i]);
 561                 required_len += cfs_size_round(m->lm_buflens[i]);
 562         }
 563
 564         if (len < required_len) {
 565                 CERROR("len: %d, required_len %d\n", len, required_len);
 566                 CERROR("bufcount: %d\n", m->lm_bufcount);
 567                 for (i = 0; i < m->lm_bufcount; i++)
 568                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 569                 return -EINVAL;
 570         }
 571
 572         return swabbed;
 573 }
 574
 575 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 576 {
 577         int required_len, rc;
 578         ENTRY;
 579
 580         /* We can provide a slightly better error log, if we check the
 581          * message magic and version first.  In the future, struct
 582          * lustre_msg may grow, and we'd like to log a version mismatch,
 583          * rather than a short message.
 584          *
 585          */
 586         required_len = offsetof(struct lustre_msg, lm_magic) +
 587                        sizeof(m->lm_magic);
 588         if (len < required_len) {
 589                 /* can't even look inside the message */
 590                 CERROR("message length %d too small for magic/version check\n",
 591                        len);
 592                 RETURN(-EINVAL);
 593         }
 594
 595         rc = lustre_unpack_msg_v2(m, len);
 596
 597         RETURN(rc);
 598 }
 599 EXPORT_SYMBOL(__lustre_unpack_msg);
 600
 601 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 602 {
 603         int rc;
 604         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 605         if (rc == 1) {
 606                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 607                 rc = 0;
 608         }
 609         return rc;
 610 }
 611
 612 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 613 {
 614         int rc;
 615         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 616         if (rc == 1) {
 617                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 618                 rc = 0;
 619         }
 620         return rc;
 621 }
 622
 623 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 624                                                const int inout, int offset)
 625 {
 626         struct ptlrpc_body *pb;
 627         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 628
 629         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 630         if (!pb) {
 631                 CERROR("error unpacking ptlrpc body\n");
 632                 return -EFAULT;
 633         }
 634         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 635                 lustre_swab_ptlrpc_body(pb);
 636                 ptlrpc_buf_set_swabbed(req, inout, offset);
 637         }
 638
 639         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 640                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 641                  return -EINVAL;
 642         }
 643
 644         if (!inout)
 645                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 646
 647         return 0;
 648 }
 649
 650 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 651 {
 652         switch (req->rq_reqmsg->lm_magic) {
 653         case LUSTRE_MSG_MAGIC_V2:
 654                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 655         default:
 656                 CERROR("bad lustre msg magic: %08x\n",
 657                        req->rq_reqmsg->lm_magic);
 658                 return -EINVAL;
 659         }
 660 }
 661
 662 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 663 {
 664         switch (req->rq_repmsg->lm_magic) {
 665         case LUSTRE_MSG_MAGIC_V2:
 666                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 667         default:
 668                 CERROR("bad lustre msg magic: %08x\n",
 669                        req->rq_repmsg->lm_magic);
 670                 return -EINVAL;
 671         }
 672 }
 673
 674 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 675 {
 676         if (n >= m->lm_bufcount)
 677                 return 0;
 678
 679         return m->lm_buflens[n];
 680 }
 681
 682 /**
 683  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 684  * \param m lustre_msg (request or reply) to look at
 685  * \param n message index (base 0)
 686  *
 687  * returns zero for non-existent message indices
 688  */
 689 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 690 {
 691         switch (m->lm_magic) {
 692         case LUSTRE_MSG_MAGIC_V2:
 693                 return lustre_msg_buflen_v2(m, n);
 694         default:
 695                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 696                 return 0;
 697         }
 698 }
 699 EXPORT_SYMBOL(lustre_msg_buflen);
 700
 701 static inline void
 702 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 703 {
 704         if (n >= m->lm_bufcount)
 705                 LBUG();
 706
 707         m->lm_buflens[n] = len;
 708 }
 709
 710 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 711 {
 712         switch (m->lm_magic) {
 713         case LUSTRE_MSG_MAGIC_V2:
 714                 lustre_msg_set_buflen_v2(m, n, len);
 715                 return;
 716         default:
 717                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 718         }
 719 }
 720
 721 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 722  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 723 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 724 {
 725         switch (m->lm_magic) {
 726         case LUSTRE_MSG_MAGIC_V2:
 727                 return m->lm_bufcount;
 728         default:
 729                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 730                 return 0;
 731         }
 732 }
 733
 734 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 735 {
 736         /* max_len == 0 means the string should fill the buffer */
 737         char *str;
 738         __u32 slen, blen;
 739
 740         switch (m->lm_magic) {
 741         case LUSTRE_MSG_MAGIC_V2:
 742                 str = lustre_msg_buf_v2(m, index, 0);
 743                 blen = lustre_msg_buflen_v2(m, index);
 744                 break;
 745         default:
 746                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 747         }
 748
 749         if (str == NULL) {
 750                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 751                 return NULL;
 752         }
 753
 754         slen = strnlen(str, blen);
 755
 756         if (slen == blen) {                     /* not NULL terminated */
 757                 CERROR("can't unpack non-NULL terminated string in "
 758                         "msg %p buffer[%d] len %d\n", m, index, blen);
 759                 return NULL;
 760         }
 761
 762         if (max_len == 0) {
 763                 if (slen != blen - 1) {
 764                         CERROR("can't unpack short string in msg %p "
 765                                "buffer[%d] len %d: strlen %d\n",
 766                                m, index, blen, slen);
 767                         return NULL;
 768                 }
 769         } else if (slen > max_len) {
 770                 CERROR("can't unpack oversized string in msg %p "
 771                        "buffer[%d] len %d strlen %d: max %d expected\n",
 772                        m, index, blen, slen, max_len);
 773                 return NULL;
 774         }
 775
 776         return str;
 777 }
 778
 779 /* Wrap up the normal fixed length cases */
 780 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 781                                       __u32 min_size, void *swabber)
 782 {
 783         void *ptr = NULL;
 784
 785         LASSERT(msg != NULL);
 786         switch (msg->lm_magic) {
 787         case LUSTRE_MSG_MAGIC_V2:
 788                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 789                 break;
 790         default:
 791                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 792         }
 793
 794         if (ptr != NULL && swabber != NULL)
 795                 ((void (*)(void *))swabber)(ptr);
 796
 797         return ptr;
 798 }
 799
 800 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 801 {
 802         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 803                                  sizeof(struct ptlrpc_body_v2));
 804 }
 805
 806 enum lustre_msghdr lustre_msghdr_get_flags(struct lustre_msg *msg)
 807 {
 808         switch (msg->lm_magic) {
 809         case LUSTRE_MSG_MAGIC_V2:
 810                 /* already in host endian */
 811                 return msg->lm_flags;
 812         default:
 813                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 814                 return 0;
 815         }
 816 }
 817 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 818
 819 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 820 {
 821         switch (msg->lm_magic) {
 822         case LUSTRE_MSG_MAGIC_V2:
 823                 msg->lm_flags = flags;
 824                 return;
 825         default:
 826                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 827         }
 828 }
 829
 830 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 831 {
 832         switch (msg->lm_magic) {
 833         case LUSTRE_MSG_MAGIC_V2: {
 834                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 835                 if (pb != NULL)
 836                         return pb->pb_flags;
 837
 838                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 839         }
 840         /* no break */
 841         default:
 842                 /* flags might be printed in debug code while message
 843                  * uninitialized */
 844                 return 0;
 845         }
 846 }
 847 EXPORT_SYMBOL(lustre_msg_get_flags);
 848
 849 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 850 {
 851         switch (msg->lm_magic) {
 852         case LUSTRE_MSG_MAGIC_V2: {
 853                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 854                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 855                 pb->pb_flags |= flags;
 856                 return;
 857         }
 858         default:
 859                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 860         }
 861 }
 862 EXPORT_SYMBOL(lustre_msg_add_flags);
 863
 864 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
 865 {
 866         switch (msg->lm_magic) {
 867         case LUSTRE_MSG_MAGIC_V2: {
 868                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 869                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 870                 pb->pb_flags = flags;
 871                 return;
 872         }
 873         default:
 874                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 875         }
 876 }
 877
 878 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 879 {
 880         switch (msg->lm_magic) {
 881         case LUSTRE_MSG_MAGIC_V2: {
 882                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 883                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 884                 pb->pb_flags &= ~flags;
 885
 886                 return;
 887         }
 888         default:
 889                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 890         }
 891 }
 892 EXPORT_SYMBOL(lustre_msg_clear_flags);
 893
 894 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 895 {
 896         switch (msg->lm_magic) {
 897         case LUSTRE_MSG_MAGIC_V2: {
 898                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 899                 if (pb != NULL)
 900                         return pb->pb_op_flags;
 901
 902                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 903         }
 904         /* no break */
 905         default:
 906                 return 0;
 907         }
 908 }
 909
 910 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 911 {
 912         switch (msg->lm_magic) {
 913         case LUSTRE_MSG_MAGIC_V2: {
 914                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 915                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 916                 pb->pb_op_flags |= flags;
 917                 return;
 918         }
 919         default:
 920                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 921         }
 922 }
 923 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 924
 925 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 926 {
 927         switch (msg->lm_magic) {
 928         case LUSTRE_MSG_MAGIC_V2: {
 929                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 930                 if (pb == NULL) {
 931                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 932                         return NULL;
 933                 }
 934                 return &pb->pb_handle;
 935         }
 936         default:
 937                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 938                 return NULL;
 939         }
 940 }
 941
 942 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 943 {
 944         switch (msg->lm_magic) {
 945         case LUSTRE_MSG_MAGIC_V2: {
 946                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 947                 if (pb == NULL) {
 948                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 949                         return PTL_RPC_MSG_ERR;
 950                 }
 951                 return pb->pb_type;
 952         }
 953         default:
 954                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 955                 return PTL_RPC_MSG_ERR;
 956         }
 957 }
 958 EXPORT_SYMBOL(lustre_msg_get_type);
 959
 960 enum lustre_msg_version lustre_msg_get_version(struct lustre_msg *msg)
 961 {
 962         switch (msg->lm_magic) {
 963         case LUSTRE_MSG_MAGIC_V2: {
 964                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 965                 if (pb == NULL) {
 966                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 967                         return 0;
 968                 }
 969                 return pb->pb_version;
 970         }
 971         default:
 972                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 973                 return 0;
 974         }
 975 }
 976
 977 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
 978 {
 979         switch (msg->lm_magic) {
 980         case LUSTRE_MSG_MAGIC_V2: {
 981                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 982                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 983                 pb->pb_version |= version;
 984                 return;
 985         }
 986         default:
 987                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 988         }
 989 }
 990
 991 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
 992 {
 993         switch (msg->lm_magic) {
 994         case LUSTRE_MSG_MAGIC_V2: {
 995                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 996                 if (pb == NULL) {
 997                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 998                         return 0;
 999                 }
1000                 return pb->pb_opc;
1001         }
1002         default:
1003                 CERROR("incorrect message magic: %08x (msg:%p)\n",
1004                        msg->lm_magic, msg);
1005                 return 0;
1006         }
1007 }
1008 EXPORT_SYMBOL(lustre_msg_get_opc);
1009
1010 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1011 {
1012         switch (msg->lm_magic) {
1013         case LUSTRE_MSG_MAGIC_V2: {
1014                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1015                 if (pb == NULL) {
1016                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1017                         return 0;
1018                 }
1019                 return pb->pb_last_xid;
1020         }
1021         default:
1022                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1023                 return 0;
1024         }
1025 }
1026 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1027
1028 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1029 {
1030         switch (msg->lm_magic) {
1031         case LUSTRE_MSG_MAGIC_V2: {
1032                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1033                 if (!pb) {
1034                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1035                         return 0;
1036                 }
1037                 return pb->pb_tag;
1038         }
1039         default:
1040                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1041                 return 0;
1042         }
1043 }
1044 EXPORT_SYMBOL(lustre_msg_get_tag);
1045
1046 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1047 {
1048         switch (msg->lm_magic) {
1049         case LUSTRE_MSG_MAGIC_V2: {
1050                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1051                 if (pb == NULL) {
1052                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1053                         return 0;
1054                 }
1055                 return pb->pb_last_committed;
1056         }
1057         default:
1058                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1059                 return 0;
1060         }
1061 }
1062 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1063
1064 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1065 {
1066         switch (msg->lm_magic) {
1067         case LUSTRE_MSG_MAGIC_V2: {
1068                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1069                 if (pb == NULL) {
1070                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1071                         return NULL;
1072                 }
1073                 return pb->pb_pre_versions;
1074         }
1075         default:
1076                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1077                 return NULL;
1078         }
1079 }
1080 EXPORT_SYMBOL(lustre_msg_get_versions);
1081
1082 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1083 {
1084         switch (msg->lm_magic) {
1085         case LUSTRE_MSG_MAGIC_V2: {
1086                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1087                 if (pb == NULL) {
1088                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1089                         return 0;
1090                 }
1091                 return pb->pb_transno;
1092         }
1093         default:
1094                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1095                 return 0;
1096         }
1097 }
1098 EXPORT_SYMBOL(lustre_msg_get_transno);
1099
1100 int lustre_msg_get_status(struct lustre_msg *msg)
1101 {
1102         switch (msg->lm_magic) {
1103         case LUSTRE_MSG_MAGIC_V2: {
1104                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1105                 if (pb != NULL)
1106                         return pb->pb_status;
1107                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1108         }
1109         /* no break */
1110         default:
1111                 /* status might be printed in debug code while message
1112                 * uninitialized */
1113                 return -EINVAL;
1114         }
1115 }
1116 EXPORT_SYMBOL(lustre_msg_get_status);
1117
1118 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1119 {
1120         switch (msg->lm_magic) {
1121         case LUSTRE_MSG_MAGIC_V2: {
1122                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1123                 if (pb == NULL) {
1124                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1125                         return -EINVAL;
1126                 }
1127                 return pb->pb_slv;
1128         }
1129         default:
1130                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1131                 return -EINVAL;
1132         }
1133 }
1134
1135
1136 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1137 {
1138         switch (msg->lm_magic) {
1139         case LUSTRE_MSG_MAGIC_V2: {
1140                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1141                 if (pb == NULL) {
1142                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1143                         return;
1144                 }
1145                 pb->pb_slv = slv;
1146                 return;
1147         }
1148         default:
1149                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1150                 return;
1151         }
1152 }
1153
1154 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1155 {
1156         switch (msg->lm_magic) {
1157         case LUSTRE_MSG_MAGIC_V2: {
1158                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1159                 if (pb == NULL) {
1160                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1161                         return -EINVAL;
1162                 }
1163                 return pb->pb_limit;
1164         }
1165         default:
1166                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1167                 return -EINVAL;
1168         }
1169 }
1170
1171
1172 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1173 {
1174         switch (msg->lm_magic) {
1175         case LUSTRE_MSG_MAGIC_V2: {
1176                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1177                 if (pb == NULL) {
1178                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1179                         return;
1180                 }
1181                 pb->pb_limit = limit;
1182                 return;
1183         }
1184         default:
1185                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1186                 return;
1187         }
1188 }
1189
1190 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1191 {
1192         switch (msg->lm_magic) {
1193         case LUSTRE_MSG_MAGIC_V2: {
1194                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1195                 if (pb == NULL) {
1196                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1197                         return 0;
1198                 }
1199                 return pb->pb_conn_cnt;
1200         }
1201         default:
1202                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1203                 return 0;
1204         }
1205 }
1206 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1207
1208 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1209 {
1210         switch (msg->lm_magic) {
1211         case LUSTRE_MSG_MAGIC_V2:
1212                 return msg->lm_magic;
1213         default:
1214                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1215                 return 0;
1216         }
1217 }
1218
1219 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1220 {
1221         switch (msg->lm_magic) {
1222         case LUSTRE_MSG_MAGIC_V2: {
1223                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1224                 if (pb == NULL) {
1225                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1226                         return 0;
1227                 }
1228                 return pb->pb_timeout;
1229         }
1230         default:
1231                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1232                 return 0;
1233         }
1234 }
1235
1236 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1237 {
1238         switch (msg->lm_magic) {
1239         case LUSTRE_MSG_MAGIC_V2: {
1240                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1241                 if (pb == NULL) {
1242                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1243                         return 0;
1244                 }
1245                 return pb->pb_service_time;
1246         }
1247         default:
1248                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1249                 return 0;
1250         }
1251 }
1252
1253 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1254 {
1255         switch (msg->lm_magic) {
1256         case LUSTRE_MSG_MAGIC_V2: {
1257                 struct ptlrpc_body *pb =
1258                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1259                                           sizeof(struct ptlrpc_body));
1260                 if (!pb)
1261                         return NULL;
1262
1263                 return pb->pb_jobid;
1264         }
1265         default:
1266                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1267                 return NULL;
1268         }
1269 }
1270 EXPORT_SYMBOL(lustre_msg_get_jobid);
1271
1272 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1273 {
1274         switch (msg->lm_magic) {
1275         case LUSTRE_MSG_MAGIC_V2:
1276                 return msg->lm_cksum;
1277         default:
1278                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1279                 return 0;
1280         }
1281 }
1282
1283 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1284 {
1285         switch (msg->lm_magic) {
1286         case LUSTRE_MSG_MAGIC_V2: {
1287                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1288                 if (pb == NULL) {
1289                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1290                         return 0;
1291                 }
1292                 return pb->pb_mbits;
1293         }
1294         default:
1295                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1296                 return 0;
1297         }
1298 }
1299
1300 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1301 {
1302         switch (msg->lm_magic) {
1303         case LUSTRE_MSG_MAGIC_V2: {
1304                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1305                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1306
1307                 unsigned int hsize = 4;
1308                 __u32 crc;
1309
1310                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1311                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1312                                        len, NULL, 0, (unsigned char *)&crc,
1313                                        &hsize);
1314                 return crc;
1315         }
1316         default:
1317                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1318                 return 0;
1319         }
1320 }
1321
1322 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1323 {
1324         switch (msg->lm_magic) {
1325         case LUSTRE_MSG_MAGIC_V2: {
1326                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1327                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1328                 pb->pb_handle = *handle;
1329                 return;
1330         }
1331         default:
1332                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1333         }
1334 }
1335
1336 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1337 {
1338         switch (msg->lm_magic) {
1339         case LUSTRE_MSG_MAGIC_V2: {
1340                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1341                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1342                 pb->pb_type = type;
1343                 return;
1344                 }
1345         default:
1346                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1347         }
1348 }
1349
1350 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1351 {
1352         switch (msg->lm_magic) {
1353         case LUSTRE_MSG_MAGIC_V2: {
1354                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1355                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1356                 pb->pb_opc = opc;
1357                 return;
1358         }
1359         default:
1360                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1361         }
1362 }
1363
1364 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1365 {
1366         switch (msg->lm_magic) {
1367         case LUSTRE_MSG_MAGIC_V2: {
1368                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1369                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1370                 pb->pb_last_xid = last_xid;
1371                 return;
1372         }
1373         default:
1374                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1375         }
1376 }
1377 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1378
1379 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1380 {
1381         switch (msg->lm_magic) {
1382         case LUSTRE_MSG_MAGIC_V2: {
1383                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1384                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1385                 pb->pb_tag = tag;
1386                 return;
1387         }
1388         default:
1389                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1390         }
1391 }
1392 EXPORT_SYMBOL(lustre_msg_set_tag);
1393
1394 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1395 {
1396         switch (msg->lm_magic) {
1397         case LUSTRE_MSG_MAGIC_V2: {
1398                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1399                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1400                 pb->pb_last_committed = last_committed;
1401                 return;
1402         }
1403         default:
1404                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1405         }
1406 }
1407
1408 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1409 {
1410         switch (msg->lm_magic) {
1411         case LUSTRE_MSG_MAGIC_V2: {
1412                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1413                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1414                 pb->pb_pre_versions[0] = versions[0];
1415                 pb->pb_pre_versions[1] = versions[1];
1416                 pb->pb_pre_versions[2] = versions[2];
1417                 pb->pb_pre_versions[3] = versions[3];
1418                 return;
1419         }
1420         default:
1421                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1422         }
1423 }
1424 EXPORT_SYMBOL(lustre_msg_set_versions);
1425
1426 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1427 {
1428         switch (msg->lm_magic) {
1429         case LUSTRE_MSG_MAGIC_V2: {
1430                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1431                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1432                 pb->pb_transno = transno;
1433                 return;
1434         }
1435         default:
1436                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1437         }
1438 }
1439 EXPORT_SYMBOL(lustre_msg_set_transno);
1440
1441 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1442 {
1443         switch (msg->lm_magic) {
1444         case LUSTRE_MSG_MAGIC_V2: {
1445                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1446                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1447                 pb->pb_status = status;
1448                 return;
1449         }
1450         default:
1451                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1452         }
1453 }
1454 EXPORT_SYMBOL(lustre_msg_set_status);
1455
1456 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1457 {
1458         switch (msg->lm_magic) {
1459         case LUSTRE_MSG_MAGIC_V2: {
1460                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1461                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1462                 pb->pb_conn_cnt = conn_cnt;
1463                 return;
1464         }
1465         default:
1466                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1467         }
1468 }
1469
1470 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1471 {
1472         switch (msg->lm_magic) {
1473         case LUSTRE_MSG_MAGIC_V2: {
1474                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1475                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1476                 pb->pb_timeout = timeout;
1477                 return;
1478         }
1479         default:
1480                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1481         }
1482 }
1483
1484 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1485 {
1486         switch (msg->lm_magic) {
1487         case LUSTRE_MSG_MAGIC_V2: {
1488                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1489                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1490                 pb->pb_service_time = service_time;
1491                 return;
1492         }
1493         default:
1494                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1495         }
1496 }
1497
1498 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1499 {
1500         switch (msg->lm_magic) {
1501         case LUSTRE_MSG_MAGIC_V2: {
1502                 __u32 opc = lustre_msg_get_opc(msg);
1503                 struct ptlrpc_body *pb;
1504
1505                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1506                  * See the comment in ptlrpc_request_pack(). */
1507                 if (!opc || opc == LDLM_BL_CALLBACK ||
1508                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1509                         return;
1510
1511                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1512                                        sizeof(struct ptlrpc_body));
1513                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1514
1515                 if (jobid != NULL)
1516                         memcpy(pb->pb_jobid, jobid, sizeof(pb->pb_jobid));
1517                 else if (pb->pb_jobid[0] == '\0')
1518                         lustre_get_jobid(pb->pb_jobid, sizeof(pb->pb_jobid));
1519                 return;
1520         }
1521         default:
1522                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1523         }
1524 }
1525 EXPORT_SYMBOL(lustre_msg_set_jobid);
1526
1527 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1528 {
1529         switch (msg->lm_magic) {
1530         case LUSTRE_MSG_MAGIC_V2:
1531                 msg->lm_cksum = cksum;
1532                 return;
1533         default:
1534                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1535         }
1536 }
1537
1538 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1539 {
1540         switch (msg->lm_magic) {
1541         case LUSTRE_MSG_MAGIC_V2: {
1542                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1543
1544                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1545                 pb->pb_mbits = mbits;
1546                 return;
1547         }
1548         default:
1549                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1550         }
1551 }
1552
1553 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1554 {
1555         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1556
1557         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1558                                          req->rq_pill.rc_area[RCL_SERVER]);
1559         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1560                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1561 }
1562 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1563
1564 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1565 {
1566         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1567         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1568                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1569 }
1570
1571 /**
1572  * Send a remote set_info_async.
1573  *
1574  * This may go from client to server or server to client.
1575  */
1576 int do_set_info_async(struct obd_import *imp,
1577                       int opcode, int version,
1578                       size_t keylen, void *key,
1579                       size_t vallen, void *val,
1580                       struct ptlrpc_request_set *set)
1581 {
1582         struct ptlrpc_request *req;
1583         char                  *tmp;
1584         int                    rc;
1585         ENTRY;
1586
1587         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1588         if (req == NULL)
1589                 RETURN(-ENOMEM);
1590
1591         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1592                              RCL_CLIENT, keylen);
1593         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1594                              RCL_CLIENT, vallen);
1595         rc = ptlrpc_request_pack(req, version, opcode);
1596         if (rc) {
1597                 ptlrpc_request_free(req);
1598                 RETURN(rc);
1599         }
1600
1601         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1602         memcpy(tmp, key, keylen);
1603         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1604         memcpy(tmp, val, vallen);
1605
1606         ptlrpc_request_set_replen(req);
1607
1608         if (set) {
1609                 ptlrpc_set_add_req(set, req);
1610                 ptlrpc_check_set(NULL, set);
1611         } else {
1612                 rc = ptlrpc_queue_wait(req);
1613                 ptlrpc_req_finished(req);
1614         }
1615
1616         RETURN(rc);
1617 }
1618 EXPORT_SYMBOL(do_set_info_async);
1619
1620 /* byte flipping routines for all wire types declared in
1621  * lustre_idl.h implemented here.
1622  */
1623 void lustre_swab_ptlrpc_body(struct ptlrpc_body *body)
1624 {
1625         __swab32s(&body->pb_type);
1626         __swab32s(&body->pb_version);
1627         __swab32s(&body->pb_opc);
1628         __swab32s(&body->pb_status);
1629         __swab64s(&body->pb_last_xid);
1630         __swab16s(&body->pb_tag);
1631         CLASSERT(offsetof(typeof(*body), pb_padding0) != 0);
1632         CLASSERT(offsetof(typeof(*body), pb_padding1) != 0);
1633         __swab64s(&body->pb_last_committed);
1634         __swab64s(&body->pb_transno);
1635         __swab32s(&body->pb_flags);
1636         __swab32s(&body->pb_op_flags);
1637         __swab32s(&body->pb_conn_cnt);
1638         __swab32s(&body->pb_timeout);
1639         __swab32s(&body->pb_service_time);
1640         __swab32s(&body->pb_limit);
1641         __swab64s(&body->pb_slv);
1642         __swab64s(&body->pb_pre_versions[0]);
1643         __swab64s(&body->pb_pre_versions[1]);
1644         __swab64s(&body->pb_pre_versions[2]);
1645         __swab64s(&body->pb_pre_versions[3]);
1646         __swab64s(&body->pb_mbits);
1647         CLASSERT(offsetof(typeof(*body), pb_padding64_0) != 0);
1648         CLASSERT(offsetof(typeof(*body), pb_padding64_1) != 0);
1649         CLASSERT(offsetof(typeof(*body), pb_padding64_2) != 0);
1650         /* While we need to maintain compatibility between
1651          * clients and servers without ptlrpc_body_v2 (< 2.3)
1652          * do not swab any fields beyond pb_jobid, as we are
1653          * using this swab function for both ptlrpc_body
1654          * and ptlrpc_body_v2. */
1655         /* pb_jobid is an ASCII string and should not be swabbed */
1656         CLASSERT(offsetof(typeof(*body), pb_jobid) != 0);
1657 }
1658
1659 void lustre_swab_connect(struct obd_connect_data *ocd)
1660 {
1661         __swab64s(&ocd->ocd_connect_flags);
1662         __swab32s(&ocd->ocd_version);
1663         __swab32s(&ocd->ocd_grant);
1664         __swab64s(&ocd->ocd_ibits_known);
1665         __swab32s(&ocd->ocd_index);
1666         __swab32s(&ocd->ocd_brw_size);
1667         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1668          * they are 8-byte values */
1669         __swab16s(&ocd->ocd_grant_tax_kb);
1670         __swab32s(&ocd->ocd_grant_max_blks);
1671         __swab64s(&ocd->ocd_transno);
1672         __swab32s(&ocd->ocd_group);
1673         __swab32s(&ocd->ocd_cksum_types);
1674         __swab32s(&ocd->ocd_instance);
1675         /* Fields after ocd_cksum_types are only accessible by the receiver
1676          * if the corresponding flag in ocd_connect_flags is set. Accessing
1677          * any field after ocd_maxbytes on the receiver without a valid flag
1678          * may result in out-of-bound memory access and kernel oops. */
1679         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1680                 __swab32s(&ocd->ocd_max_easize);
1681         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1682                 __swab64s(&ocd->ocd_maxbytes);
1683         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1684                 __swab16s(&ocd->ocd_maxmodrpcs);
1685         CLASSERT(offsetof(typeof(*ocd), padding0) != 0);
1686         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1687         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1688                 __swab64s(&ocd->ocd_connect_flags2);
1689         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1690         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1691         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1692         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1693         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1694         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1695         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1696         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1697         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1698         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1699         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1700         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1701         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1702 }
1703
1704 static void lustre_swab_ost_layout(struct ost_layout *ol)
1705 {
1706         __swab32s(&ol->ol_stripe_size);
1707         __swab32s(&ol->ol_stripe_count);
1708         __swab64s(&ol->ol_comp_start);
1709         __swab64s(&ol->ol_comp_end);
1710         __swab32s(&ol->ol_comp_id);
1711 }
1712
1713 void lustre_swab_obdo (struct obdo  *o)
1714 {
1715         __swab64s(&o->o_valid);
1716         lustre_swab_ost_id(&o->o_oi);
1717         __swab64s(&o->o_parent_seq);
1718         __swab64s(&o->o_size);
1719         __swab64s(&o->o_mtime);
1720         __swab64s(&o->o_atime);
1721         __swab64s(&o->o_ctime);
1722         __swab64s(&o->o_blocks);
1723         __swab64s(&o->o_grant);
1724         __swab32s(&o->o_blksize);
1725         __swab32s(&o->o_mode);
1726         __swab32s(&o->o_uid);
1727         __swab32s(&o->o_gid);
1728         __swab32s(&o->o_flags);
1729         __swab32s(&o->o_nlink);
1730         __swab32s(&o->o_parent_oid);
1731         __swab32s(&o->o_misc);
1732         __swab64s(&o->o_ioepoch);
1733         __swab32s(&o->o_stripe_idx);
1734         __swab32s(&o->o_parent_ver);
1735         lustre_swab_ost_layout(&o->o_layout);
1736         __swab32s(&o->o_layout_version);
1737         __swab32s(&o->o_uid_h);
1738         __swab32s(&o->o_gid_h);
1739         __swab64s(&o->o_data_version);
1740         __swab32s(&o->o_projid);
1741         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1742         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1743         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1744
1745 }
1746 EXPORT_SYMBOL(lustre_swab_obdo);
1747
1748 void lustre_swab_obd_statfs (struct obd_statfs *os)
1749 {
1750         __swab64s(&os->os_type);
1751         __swab64s(&os->os_blocks);
1752         __swab64s(&os->os_bfree);
1753         __swab64s(&os->os_bavail);
1754         __swab64s(&os->os_files);
1755         __swab64s(&os->os_ffree);
1756         /* no need to swab os_fsid */
1757         __swab32s(&os->os_bsize);
1758         __swab32s(&os->os_namelen);
1759         __swab64s(&os->os_maxbytes);
1760         __swab32s(&os->os_state);
1761         __swab32s(&os->os_fprecreated);
1762         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1763         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1764         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1765         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1766         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1767         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1768         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1769         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1770 }
1771
1772 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1773 {
1774         lustre_swab_ost_id(&ioo->ioo_oid);
1775         __swab32s(&ioo->ioo_max_brw);
1776         __swab32s(&ioo->ioo_bufcnt);
1777 }
1778
1779 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1780 {
1781         __swab64s(&nbr->rnb_offset);
1782         __swab32s(&nbr->rnb_len);
1783         __swab32s(&nbr->rnb_flags);
1784 }
1785
1786 void lustre_swab_ost_body (struct ost_body *b)
1787 {
1788         lustre_swab_obdo (&b->oa);
1789 }
1790
1791 void lustre_swab_ost_last_id(u64 *id)
1792 {
1793         __swab64s(id);
1794 }
1795
1796 void lustre_swab_generic_32s(__u32 *val)
1797 {
1798         __swab32s(val);
1799 }
1800
1801 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1802 {
1803         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1804         __swab64s(&desc->gl_flags);
1805         __swab64s(&desc->gl_ver);
1806         __swab64s(&desc->gl_hardlimit);
1807         __swab64s(&desc->gl_softlimit);
1808         __swab64s(&desc->gl_time);
1809         CLASSERT(offsetof(typeof(*desc), gl_pad2) != 0);
1810 }
1811 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1812
1813 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1814 {
1815         __swab32s(&desc->lgbd_status);
1816         __swab32s(&desc->lgbd_timeout);
1817         CLASSERT(offsetof(typeof(*desc), lgbd_padding) != 0);
1818 }
1819 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1820
1821 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1822 {
1823         __swab64s(&lvb->lvb_size);
1824         __swab64s(&lvb->lvb_mtime);
1825         __swab64s(&lvb->lvb_atime);
1826         __swab64s(&lvb->lvb_ctime);
1827         __swab64s(&lvb->lvb_blocks);
1828 }
1829 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1830
1831 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1832 {
1833         __swab64s(&lvb->lvb_size);
1834         __swab64s(&lvb->lvb_mtime);
1835         __swab64s(&lvb->lvb_atime);
1836         __swab64s(&lvb->lvb_ctime);
1837         __swab64s(&lvb->lvb_blocks);
1838         __swab32s(&lvb->lvb_mtime_ns);
1839         __swab32s(&lvb->lvb_atime_ns);
1840         __swab32s(&lvb->lvb_ctime_ns);
1841         __swab32s(&lvb->lvb_padding);
1842 }
1843 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1844
1845 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1846 {
1847         __swab64s(&lvb->lvb_flags);
1848         __swab64s(&lvb->lvb_id_may_rel);
1849         __swab64s(&lvb->lvb_id_rel);
1850         __swab64s(&lvb->lvb_id_qunit);
1851         __swab64s(&lvb->lvb_pad1);
1852 }
1853 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1854
1855 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1856 {
1857         __swab32s(&lvb->lvb_status);
1858         __swab32s(&lvb->lvb_index);
1859         CLASSERT(offsetof(typeof(*lvb), lvb_padding) != 0);
1860 }
1861 EXPORT_SYMBOL(lustre_swab_barrier_lvb);
1862
1863 void lustre_swab_mdt_body (struct mdt_body *b)
1864 {
1865         lustre_swab_lu_fid(&b->mbo_fid1);
1866         lustre_swab_lu_fid(&b->mbo_fid2);
1867         /* handle is opaque */
1868         __swab64s(&b->mbo_valid);
1869         __swab64s(&b->mbo_size);
1870         __swab64s(&b->mbo_mtime);
1871         __swab64s(&b->mbo_atime);
1872         __swab64s(&b->mbo_ctime);
1873         __swab64s(&b->mbo_blocks);
1874         __swab64s(&b->mbo_version);
1875         __swab64s(&b->mbo_t_state);
1876         __swab32s(&b->mbo_fsuid);
1877         __swab32s(&b->mbo_fsgid);
1878         __swab32s(&b->mbo_capability);
1879         __swab32s(&b->mbo_mode);
1880         __swab32s(&b->mbo_uid);
1881         __swab32s(&b->mbo_gid);
1882         __swab32s(&b->mbo_flags);
1883         __swab32s(&b->mbo_rdev);
1884         __swab32s(&b->mbo_nlink);
1885         __swab32s(&b->mbo_layout_gen);
1886         __swab32s(&b->mbo_suppgid);
1887         __swab32s(&b->mbo_eadatasize);
1888         __swab32s(&b->mbo_aclsize);
1889         __swab32s(&b->mbo_max_mdsize);
1890         CLASSERT(offsetof(typeof(*b), mbo_unused3) != 0);
1891         __swab32s(&b->mbo_uid_h);
1892         __swab32s(&b->mbo_gid_h);
1893         __swab32s(&b->mbo_projid);
1894         __swab64s(&b->mbo_dom_size);
1895         __swab64s(&b->mbo_dom_blocks);
1896         CLASSERT(offsetof(typeof(*b), mbo_padding_8) != 0);
1897         CLASSERT(offsetof(typeof(*b), mbo_padding_9) != 0);
1898         CLASSERT(offsetof(typeof(*b), mbo_padding_10) != 0);
1899 }
1900
1901 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1902 {
1903         /* mio_handle is opaque */
1904         CLASSERT(offsetof(typeof(*b), mio_unused1) != 0);
1905         CLASSERT(offsetof(typeof(*b), mio_unused2) != 0);
1906         CLASSERT(offsetof(typeof(*b), mio_padding) != 0);
1907 }
1908
1909 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1910 {
1911         int i;
1912
1913         __swab32s(&mti->mti_lustre_ver);
1914         __swab32s(&mti->mti_stripe_index);
1915         __swab32s(&mti->mti_config_ver);
1916         __swab32s(&mti->mti_flags);
1917         __swab32s(&mti->mti_instance);
1918         __swab32s(&mti->mti_nid_count);
1919         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1920         for (i = 0; i < MTI_NIDS_MAX; i++)
1921                 __swab64s(&mti->mti_nids[i]);
1922 }
1923
1924 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1925 {
1926         __u8 i;
1927
1928         __swab64s(&entry->mne_version);
1929         __swab32s(&entry->mne_instance);
1930         __swab32s(&entry->mne_index);
1931         __swab32s(&entry->mne_length);
1932
1933         /* mne_nid_(count|type) must be one byte size because we're gonna
1934          * access it w/o swapping. */
1935         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1936         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1937
1938         /* remove this assertion if ipv6 is supported. */
1939         LASSERT(entry->mne_nid_type == 0);
1940         for (i = 0; i < entry->mne_nid_count; i++) {
1941                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1942                 __swab64s(&entry->u.nids[i]);
1943         }
1944 }
1945 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1946
1947 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1948 {
1949         __swab64s(&body->mcb_offset);
1950         __swab32s(&body->mcb_units);
1951         __swab16s(&body->mcb_type);
1952 }
1953
1954 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1955 {
1956         __swab64s(&body->mcr_offset);
1957         __swab64s(&body->mcr_size);
1958 }
1959
1960 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1961 {
1962         __swab64s (&i->dqi_bgrace);
1963         __swab64s (&i->dqi_igrace);
1964         __swab32s (&i->dqi_flags);
1965         __swab32s (&i->dqi_valid);
1966 }
1967
1968 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1969 {
1970         __swab64s (&b->dqb_ihardlimit);
1971         __swab64s (&b->dqb_isoftlimit);
1972         __swab64s (&b->dqb_curinodes);
1973         __swab64s (&b->dqb_bhardlimit);
1974         __swab64s (&b->dqb_bsoftlimit);
1975         __swab64s (&b->dqb_curspace);
1976         __swab64s (&b->dqb_btime);
1977         __swab64s (&b->dqb_itime);
1978         __swab32s (&b->dqb_valid);
1979         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1980 }
1981
1982 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1983 {
1984         __swab32s (&q->qc_cmd);
1985         __swab32s (&q->qc_type);
1986         __swab32s (&q->qc_id);
1987         __swab32s (&q->qc_stat);
1988         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1989         lustre_swab_obd_dqblk (&q->qc_dqblk);
1990 }
1991
1992 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
1993 {
1994         lustre_swab_lu_fid(&gf->gf_fid);
1995         __swab64s(&gf->gf_recno);
1996         __swab32s(&gf->gf_linkno);
1997         __swab32s(&gf->gf_pathlen);
1998 }
1999 EXPORT_SYMBOL(lustre_swab_fid2path);
2000
2001 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
2002 {
2003         __swab64s(&fm_extent->fe_logical);
2004         __swab64s(&fm_extent->fe_physical);
2005         __swab64s(&fm_extent->fe_length);
2006         __swab32s(&fm_extent->fe_flags);
2007         __swab32s(&fm_extent->fe_device);
2008 }
2009
2010 void lustre_swab_fiemap(struct fiemap *fiemap)
2011 {
2012         __u32 i;
2013
2014         __swab64s(&fiemap->fm_start);
2015         __swab64s(&fiemap->fm_length);
2016         __swab32s(&fiemap->fm_flags);
2017         __swab32s(&fiemap->fm_mapped_extents);
2018         __swab32s(&fiemap->fm_extent_count);
2019         __swab32s(&fiemap->fm_reserved);
2020
2021         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2022                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2023 }
2024
2025 void lustre_swab_idx_info(struct idx_info *ii)
2026 {
2027         __swab32s(&ii->ii_magic);
2028         __swab32s(&ii->ii_flags);
2029         __swab16s(&ii->ii_count);
2030         __swab32s(&ii->ii_attrs);
2031         lustre_swab_lu_fid(&ii->ii_fid);
2032         __swab64s(&ii->ii_version);
2033         __swab64s(&ii->ii_hash_start);
2034         __swab64s(&ii->ii_hash_end);
2035         __swab16s(&ii->ii_keysize);
2036         __swab16s(&ii->ii_recsize);
2037 }
2038
2039 void lustre_swab_lip_header(struct lu_idxpage *lip)
2040 {
2041         /* swab header */
2042         __swab32s(&lip->lip_magic);
2043         __swab16s(&lip->lip_flags);
2044         __swab16s(&lip->lip_nr);
2045 }
2046 EXPORT_SYMBOL(lustre_swab_lip_header);
2047
2048 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2049 {
2050         __swab32s(&rr->rr_opcode);
2051         __swab32s(&rr->rr_cap);
2052         __swab32s(&rr->rr_fsuid);
2053         /* rr_fsuid_h is unused */
2054         __swab32s(&rr->rr_fsgid);
2055         /* rr_fsgid_h is unused */
2056         __swab32s(&rr->rr_suppgid1);
2057         /* rr_suppgid1_h is unused */
2058         __swab32s(&rr->rr_suppgid2);
2059         /* rr_suppgid2_h is unused */
2060         lustre_swab_lu_fid(&rr->rr_fid1);
2061         lustre_swab_lu_fid(&rr->rr_fid2);
2062         __swab64s(&rr->rr_mtime);
2063         __swab64s(&rr->rr_atime);
2064         __swab64s(&rr->rr_ctime);
2065         __swab64s(&rr->rr_size);
2066         __swab64s(&rr->rr_blocks);
2067         __swab32s(&rr->rr_bias);
2068         __swab32s(&rr->rr_mode);
2069         __swab32s(&rr->rr_flags);
2070         __swab32s(&rr->rr_flags_h);
2071         __swab32s(&rr->rr_umask);
2072
2073         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2074 };
2075
2076 void lustre_swab_lov_desc (struct lov_desc *ld)
2077 {
2078         __swab32s (&ld->ld_tgt_count);
2079         __swab32s (&ld->ld_active_tgt_count);
2080         __swab32s (&ld->ld_default_stripe_count);
2081         __swab32s (&ld->ld_pattern);
2082         __swab64s (&ld->ld_default_stripe_size);
2083         __swab64s (&ld->ld_default_stripe_offset);
2084         __swab32s (&ld->ld_qos_maxage);
2085         /* uuid endian insensitive */
2086 }
2087 EXPORT_SYMBOL(lustre_swab_lov_desc);
2088
2089 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2090 {
2091         __swab32s (&ld->ld_tgt_count);
2092         __swab32s (&ld->ld_active_tgt_count);
2093         __swab32s (&ld->ld_default_stripe_count);
2094         __swab32s (&ld->ld_pattern);
2095         __swab64s (&ld->ld_default_hash_size);
2096         __swab32s (&ld->ld_qos_maxage);
2097         /* uuid endian insensitive */
2098 }
2099
2100 /* This structure is always in little-endian */
2101 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2102 {
2103         int i;
2104
2105         __swab32s(&lmm1->lmv_magic);
2106         __swab32s(&lmm1->lmv_stripe_count);
2107         __swab32s(&lmm1->lmv_master_mdt_index);
2108         __swab32s(&lmm1->lmv_hash_type);
2109         __swab32s(&lmm1->lmv_layout_version);
2110         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2111                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2112 }
2113
2114 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2115 {
2116         switch (lmm->lmv_magic) {
2117         case LMV_MAGIC_V1:
2118                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2119                 break;
2120         default:
2121                 break;
2122         }
2123 }
2124 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2125
2126 void lustre_swab_lmv_user_md_objects(struct lmv_user_mds_data *lmd,
2127                                      int stripe_count)
2128 {
2129         int i;
2130
2131         for (i = 0; i < stripe_count; i++)
2132                 __swab32s(&(lmd[i].lum_mds));
2133 }
2134 EXPORT_SYMBOL(lustre_swab_lmv_user_md_objects);
2135
2136
2137 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2138 {
2139         __u32 count = lum->lum_stripe_count;
2140
2141         __swab32s(&lum->lum_magic);
2142         __swab32s(&lum->lum_stripe_count);
2143         __swab32s(&lum->lum_stripe_offset);
2144         __swab32s(&lum->lum_hash_type);
2145         __swab32s(&lum->lum_type);
2146         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2147         switch (lum->lum_magic) {
2148         case LMV_USER_MAGIC_SPECIFIC:
2149                 count = lum->lum_stripe_count;
2150         case __swab32(LMV_USER_MAGIC_SPECIFIC):
2151                 lustre_swab_lmv_user_md_objects(lum->lum_objects, count);
2152                 break;
2153         default:
2154                 break;
2155         }
2156 }
2157 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2158
2159 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2160                               const char *msg)
2161 {
2162         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2163         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2164         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2165         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2166         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2167         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2168         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2169         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2170                lum->lmm_stripe_offset);
2171         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2172                 struct lov_user_md_v3 *v3 = (void *)lum;
2173                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2174         }
2175         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2176                 struct lov_user_md_v3 *v3 = (void *)lum;
2177                 int i;
2178
2179                 if (v3->lmm_pool_name[0] != '\0')
2180                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2181
2182                 CDEBUG(lvl, "\ttarget list:\n");
2183                 for (i = 0; i < v3->lmm_stripe_count; i++)
2184                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2185         }
2186 }
2187
2188 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2189                           const char *msg)
2190 {
2191         struct lov_comp_md_v1   *comp_v1;
2192         int                      i;
2193
2194         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2195                 return;
2196
2197         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2198             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2199                 lustre_print_v1v3(lvl, lum, msg);
2200                 return;
2201         }
2202
2203         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2204                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2205                 return;
2206         }
2207
2208         comp_v1 = (struct lov_comp_md_v1 *)lum;
2209         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2210         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2211         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2212         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2213         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2214         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2215         CDEBUG(lvl, "\tlcm_mirror_count: %#x\n\n", comp_v1->lcm_mirror_count);
2216
2217         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2218                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2219                 struct lov_user_md *v1;
2220
2221                 CDEBUG(lvl, "\tentry %d:\n", i);
2222                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2223                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2224                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2225                        ent->lcme_extent.e_start);
2226                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2227                        ent->lcme_extent.e_end);
2228                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2229                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2230
2231                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2232                                 comp_v1->lcm_entries[i].lcme_offset);
2233                 lustre_print_v1v3(lvl, v1, msg);
2234         }
2235 }
2236 EXPORT_SYMBOL(lustre_print_user_md);
2237
2238 static void lustre_swab_lmm_oi(struct ost_id *oi)
2239 {
2240         __swab64s(&oi->oi.oi_id);
2241         __swab64s(&oi->oi.oi_seq);
2242 }
2243
2244 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2245 {
2246         ENTRY;
2247         __swab32s(&lum->lmm_magic);
2248         __swab32s(&lum->lmm_pattern);
2249         lustre_swab_lmm_oi(&lum->lmm_oi);
2250         __swab32s(&lum->lmm_stripe_size);
2251         __swab16s(&lum->lmm_stripe_count);
2252         __swab16s(&lum->lmm_stripe_offset);
2253         EXIT;
2254 }
2255
2256 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2257 {
2258         ENTRY;
2259         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2260         lustre_swab_lov_user_md_common(lum);
2261         EXIT;
2262 }
2263 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2264
2265 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2266 {
2267         ENTRY;
2268         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2269         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2270         /* lmm_pool_name nothing to do with char */
2271         EXIT;
2272 }
2273 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2274
2275 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2276 {
2277         struct lov_comp_md_entry_v1     *ent;
2278         struct lov_user_md_v1   *v1;
2279         struct lov_user_md_v3   *v3;
2280         int     i;
2281         bool    cpu_endian;
2282         __u32   off, size;
2283         __u16   ent_count, stripe_count;
2284         ENTRY;
2285
2286         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2287         ent_count = lum->lcm_entry_count;
2288         if (!cpu_endian)
2289                 __swab16s(&ent_count);
2290
2291         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2292         __swab32s(&lum->lcm_magic);
2293         __swab32s(&lum->lcm_size);
2294         __swab32s(&lum->lcm_layout_gen);
2295         __swab16s(&lum->lcm_flags);
2296         __swab16s(&lum->lcm_entry_count);
2297         __swab16s(&lum->lcm_mirror_count);
2298         CLASSERT(offsetof(typeof(*lum), lcm_padding1) != 0);
2299         CLASSERT(offsetof(typeof(*lum), lcm_padding2) != 0);
2300
2301         for (i = 0; i < ent_count; i++) {
2302                 ent = &lum->lcm_entries[i];
2303                 off = ent->lcme_offset;
2304                 size = ent->lcme_size;
2305
2306                 if (!cpu_endian) {
2307                         __swab32s(&off);
2308                         __swab32s(&size);
2309                 }
2310                 __swab32s(&ent->lcme_id);
2311                 __swab32s(&ent->lcme_flags);
2312                 __swab64s(&ent->lcme_extent.e_start);
2313                 __swab64s(&ent->lcme_extent.e_end);
2314                 __swab32s(&ent->lcme_offset);
2315                 __swab32s(&ent->lcme_size);
2316                 CLASSERT(offsetof(typeof(*ent), lcme_padding) != 0);
2317
2318                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2319                 stripe_count = v1->lmm_stripe_count;
2320                 if (!cpu_endian)
2321                         __swab16s(&stripe_count);
2322
2323                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2324                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2325                         lustre_swab_lov_user_md_v1(v1);
2326                         if (size > sizeof(*v1))
2327                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2328                                                                 stripe_count);
2329                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2330                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2331                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2332                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2333                         v3 = (struct lov_user_md_v3 *)v1;
2334                         lustre_swab_lov_user_md_v3(v3);
2335                         if (size > sizeof(*v3))
2336                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2337                                                                 stripe_count);
2338                 } else {
2339                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2340                 }
2341         }
2342 }
2343 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2344
2345 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2346 {
2347         ENTRY;
2348         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2349         __swab32s(&lmm->lmm_magic);
2350         __swab32s(&lmm->lmm_pattern);
2351         lustre_swab_lmm_oi(&lmm->lmm_oi);
2352         __swab32s(&lmm->lmm_stripe_size);
2353         __swab16s(&lmm->lmm_stripe_count);
2354         __swab16s(&lmm->lmm_layout_gen);
2355         EXIT;
2356 }
2357 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2358
2359 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2360                                      int stripe_count)
2361 {
2362         int i;
2363         ENTRY;
2364         for (i = 0; i < stripe_count; i++) {
2365                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2366                 __swab32s(&(lod[i].l_ost_gen));
2367                 __swab32s(&(lod[i].l_ost_idx));
2368         }
2369         EXIT;
2370 }
2371 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2372
2373 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2374 {
2375         int  i;
2376
2377         for (i = 0; i < RES_NAME_SIZE; i++)
2378                 __swab64s (&id->name[i]);
2379 }
2380
2381 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2382 {
2383         /* the lock data is a union and the first two fields are always an
2384          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2385          * data the same way. */
2386         __swab64s(&d->l_extent.start);
2387         __swab64s(&d->l_extent.end);
2388         __swab64s(&d->l_extent.gid);
2389         __swab64s(&d->l_flock.lfw_owner);
2390         __swab32s(&d->l_flock.lfw_pid);
2391 }
2392
2393 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2394 {
2395         __swab64s(&i->opc);
2396 }
2397
2398 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2399 {
2400         __swab32s(&r->lr_type);
2401         CLASSERT(offsetof(typeof(*r), lr_pad) != 0);
2402         lustre_swab_ldlm_res_id(&r->lr_name);
2403 }
2404
2405 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2406 {
2407         lustre_swab_ldlm_resource_desc (&l->l_resource);
2408         __swab32s (&l->l_req_mode);
2409         __swab32s (&l->l_granted_mode);
2410         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2411 }
2412
2413 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2414 {
2415         __swab32s (&rq->lock_flags);
2416         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2417         __swab32s (&rq->lock_count);
2418         /* lock_handle[] opaque */
2419 }
2420
2421 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2422 {
2423         __swab32s (&r->lock_flags);
2424         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2425         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2426         /* lock_handle opaque */
2427         __swab64s (&r->lock_policy_res1);
2428         __swab64s (&r->lock_policy_res2);
2429 }
2430
2431 void lustre_swab_quota_body(struct quota_body *b)
2432 {
2433         lustre_swab_lu_fid(&b->qb_fid);
2434         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2435         __swab32s(&b->qb_flags);
2436         __swab64s(&b->qb_count);
2437         __swab64s(&b->qb_usage);
2438         __swab64s(&b->qb_slv_ver);
2439 }
2440
2441 /* Dump functions */
2442 void dump_ioo(struct obd_ioobj *ioo)
2443 {
2444         CDEBUG(D_RPCTRACE,
2445                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2446                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2447                ioo->ioo_bufcnt);
2448 }
2449
2450 void dump_rniobuf(struct niobuf_remote *nb)
2451 {
2452         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2453                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2454 }
2455
2456 void dump_obdo(struct obdo *oa)
2457 {
2458         u64 valid = oa->o_valid;
2459
2460         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2461         if (valid & OBD_MD_FLID)
2462                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2463         if (valid & OBD_MD_FLFID)
2464                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2465                        oa->o_parent_seq);
2466         if (valid & OBD_MD_FLSIZE)
2467                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2468         if (valid & OBD_MD_FLMTIME)
2469                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2470         if (valid & OBD_MD_FLATIME)
2471                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2472         if (valid & OBD_MD_FLCTIME)
2473                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2474         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2475                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2476         if (valid & OBD_MD_FLGRANT)
2477                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2478         if (valid & OBD_MD_FLBLKSZ)
2479                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2480         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2481                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2482                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2483                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2484         if (valid & OBD_MD_FLUID)
2485                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2486         if (valid & OBD_MD_FLUID)
2487                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2488         if (valid & OBD_MD_FLGID)
2489                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2490         if (valid & OBD_MD_FLGID)
2491                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2492         if (valid & OBD_MD_FLFLAGS)
2493                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2494         if (valid & OBD_MD_FLNLINK)
2495                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2496         else if (valid & OBD_MD_FLCKSUM)
2497                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2498                        oa->o_nlink);
2499         if (valid & OBD_MD_FLGENER)
2500                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2501                        oa->o_parent_oid);
2502         if (valid & OBD_MD_FLEPOCH)
2503                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = %lld\n",
2504                        oa->o_ioepoch);
2505         if (valid & OBD_MD_FLFID) {
2506                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2507                        oa->o_stripe_idx);
2508                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2509                        oa->o_parent_ver);
2510         }
2511         if (valid & OBD_MD_FLHANDLE)
2512                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2513                        oa->o_handle.cookie);
2514 }
2515
2516 void dump_ost_body(struct ost_body *ob)
2517 {
2518         dump_obdo(&ob->oa);
2519 }
2520
2521 void dump_rcs(__u32 *rc)
2522 {
2523         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2524 }
2525
2526 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2527 {
2528         LASSERT(req->rq_reqmsg);
2529
2530         switch (req->rq_reqmsg->lm_magic) {
2531         case LUSTRE_MSG_MAGIC_V2:
2532                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2533         default:
2534                 CERROR("bad lustre msg magic: %#08X\n",
2535                        req->rq_reqmsg->lm_magic);
2536         }
2537         return 0;
2538 }
2539
2540 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2541 {
2542         if (unlikely(!req->rq_repmsg))
2543                 return 0;
2544
2545         switch (req->rq_repmsg->lm_magic) {
2546         case LUSTRE_MSG_MAGIC_V2:
2547                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2548         default:
2549                 /* uninitialized yet */
2550                 return 0;
2551         }
2552 }
2553
2554 void _debug_req(struct ptlrpc_request *req,
2555                 struct libcfs_debug_msg_data *msgdata, const char *fmt, ...)
2556 {
2557         bool req_ok = req->rq_reqmsg != NULL;
2558         bool rep_ok = false;
2559         lnet_nid_t nid = LNET_NID_ANY;
2560         va_list args;
2561         int rep_flags = -1;
2562         int rep_status = -1;
2563
2564         spin_lock(&req->rq_early_free_lock);
2565         if (req->rq_repmsg)
2566                 rep_ok = true;
2567
2568         if (ptlrpc_req_need_swab(req)) {
2569                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2570                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2571         }
2572
2573         if (rep_ok) {
2574                 rep_flags = lustre_msg_get_flags(req->rq_repmsg);
2575                 rep_status = lustre_msg_get_status(req->rq_repmsg);
2576         }
2577         spin_unlock(&req->rq_early_free_lock);
2578
2579         if (req->rq_import && req->rq_import->imp_connection)
2580                 nid = req->rq_import->imp_connection->c_peer.nid;
2581         else if (req->rq_export && req->rq_export->exp_connection)
2582                 nid = req->rq_export->exp_connection->c_peer.nid;
2583
2584         va_start(args, fmt);
2585         libcfs_debug_vmsg2(msgdata, fmt, args,
2586                            " 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\n",
2587                            req, req->rq_xid, req->rq_transno,
2588                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2589                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2590                            req->rq_import ?
2591                                 req->rq_import->imp_obd->obd_name :
2592                                 req->rq_export ?
2593                                         req->rq_export->exp_client_uuid.uuid :
2594                                         "<?>",
2595                            libcfs_nid2str(nid),
2596                            req->rq_request_portal, req->rq_reply_portal,
2597                            req->rq_reqlen, req->rq_replen,
2598                            req->rq_early_count, (s64)req->rq_timedout,
2599                            (s64)req->rq_deadline,
2600                            atomic_read(&req->rq_refcount),
2601                            DEBUG_REQ_FLAGS(req),
2602                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2603                            rep_flags, req->rq_status, rep_status);
2604         va_end(args);
2605 }
2606 EXPORT_SYMBOL(_debug_req);
2607
2608 void lustre_swab_lustre_capa(struct lustre_capa *c)
2609 {
2610         lustre_swab_lu_fid(&c->lc_fid);
2611         __swab64s (&c->lc_opc);
2612         __swab64s (&c->lc_uid);
2613         __swab64s (&c->lc_gid);
2614         __swab32s (&c->lc_flags);
2615         __swab32s (&c->lc_keyid);
2616         __swab32s (&c->lc_timeout);
2617         __swab32s (&c->lc_expiry);
2618 }
2619
2620 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2621 {
2622         __swab64s (&k->lk_seq);
2623         __swab32s (&k->lk_keyid);
2624         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2625 }
2626
2627 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2628 {
2629         __swab32s(&state->hus_states);
2630         __swab32s(&state->hus_archive_id);
2631 }
2632
2633 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2634 {
2635         __swab32s(&hss->hss_valid);
2636         __swab64s(&hss->hss_setmask);
2637         __swab64s(&hss->hss_clearmask);
2638         __swab32s(&hss->hss_archive_id);
2639 }
2640
2641 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2642 {
2643         __swab64s(&extent->offset);
2644         __swab64s(&extent->length);
2645 }
2646
2647 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2648 {
2649         __swab32s(&action->hca_state);
2650         __swab32s(&action->hca_action);
2651         lustre_swab_hsm_extent(&action->hca_location);
2652 }
2653
2654 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2655 {
2656         lustre_swab_lu_fid(&hui->hui_fid);
2657         lustre_swab_hsm_extent(&hui->hui_extent);
2658 }
2659
2660 void lustre_swab_lu_extent(struct lu_extent *le)
2661 {
2662         __swab64s(&le->e_start);
2663         __swab64s(&le->e_end);
2664 }
2665
2666 void lustre_swab_layout_intent(struct layout_intent *li)
2667 {
2668         __swab32s(&li->li_opc);
2669         __swab32s(&li->li_flags);
2670         lustre_swab_lu_extent(&li->li_extent);
2671 }
2672
2673 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2674 {
2675         lustre_swab_lu_fid(&hpk->hpk_fid);
2676         __swab64s(&hpk->hpk_cookie);
2677         __swab64s(&hpk->hpk_extent.offset);
2678         __swab64s(&hpk->hpk_extent.length);
2679         __swab16s(&hpk->hpk_flags);
2680         __swab16s(&hpk->hpk_errval);
2681 }
2682
2683 void lustre_swab_hsm_request(struct hsm_request *hr)
2684 {
2685         __swab32s(&hr->hr_action);
2686         __swab32s(&hr->hr_archive_id);
2687         __swab64s(&hr->hr_flags);
2688         __swab32s(&hr->hr_itemcount);
2689         __swab32s(&hr->hr_data_len);
2690 }
2691
2692 void lustre_swab_object_update(struct object_update *ou)
2693 {
2694         struct object_update_param *param;
2695         size_t  i;
2696
2697         __swab16s(&ou->ou_type);
2698         __swab16s(&ou->ou_params_count);
2699         __swab32s(&ou->ou_result_size);
2700         __swab32s(&ou->ou_flags);
2701         __swab32s(&ou->ou_padding1);
2702         __swab64s(&ou->ou_batchid);
2703         lustre_swab_lu_fid(&ou->ou_fid);
2704         param = &ou->ou_params[0];
2705         for (i = 0; i < ou->ou_params_count; i++) {
2706                 __swab16s(&param->oup_len);
2707                 __swab16s(&param->oup_padding);
2708                 __swab32s(&param->oup_padding2);
2709                 param = (struct object_update_param *)((char *)param +
2710                          object_update_param_size(param));
2711         }
2712 }
2713
2714 void lustre_swab_object_update_request(struct object_update_request *our)
2715 {
2716         size_t i;
2717         __swab32s(&our->ourq_magic);
2718         __swab16s(&our->ourq_count);
2719         __swab16s(&our->ourq_padding);
2720         for (i = 0; i < our->ourq_count; i++) {
2721                 struct object_update *ou;
2722
2723                 ou = object_update_request_get(our, i, NULL);
2724                 if (ou == NULL)
2725                         return;
2726                 lustre_swab_object_update(ou);
2727         }
2728 }
2729
2730 void lustre_swab_object_update_result(struct object_update_result *our)
2731 {
2732         __swab32s(&our->our_rc);
2733         __swab16s(&our->our_datalen);
2734         __swab16s(&our->our_padding);
2735 }
2736
2737 void lustre_swab_object_update_reply(struct object_update_reply *our)
2738 {
2739         size_t i;
2740
2741         __swab32s(&our->ourp_magic);
2742         __swab16s(&our->ourp_count);
2743         __swab16s(&our->ourp_padding);
2744         for (i = 0; i < our->ourp_count; i++) {
2745                 struct object_update_result *ourp;
2746
2747                 __swab16s(&our->ourp_lens[i]);
2748                 ourp = object_update_result_get(our, i, NULL);
2749                 if (ourp == NULL)
2750                         return;
2751                 lustre_swab_object_update_result(ourp);
2752         }
2753 }
2754
2755 void lustre_swab_out_update_header(struct out_update_header *ouh)
2756 {
2757         __swab32s(&ouh->ouh_magic);
2758         __swab32s(&ouh->ouh_count);
2759         __swab32s(&ouh->ouh_inline_length);
2760         __swab32s(&ouh->ouh_reply_size);
2761 }
2762 EXPORT_SYMBOL(lustre_swab_out_update_header);
2763
2764 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2765 {
2766         __swab32s(&oub->oub_size);
2767         __swab32s(&oub->oub_padding);
2768 }
2769 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2770
2771 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2772 {
2773         __swab64s(&msl->msl_flags);
2774 }
2775
2776 void lustre_swab_close_data(struct close_data *cd)
2777 {
2778         lustre_swab_lu_fid(&cd->cd_fid);
2779         __swab64s(&cd->cd_data_version);
2780 }
2781
2782 void lustre_swab_close_data_resync_done(struct close_data_resync_done *resync)
2783 {
2784         int i;
2785
2786         __swab32s(&resync->resync_count);
2787         /* after swab, resync_count must in CPU endian */
2788         if (resync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
2789                 for (i = 0; i < resync->resync_count; i++)
2790                         __swab32s(&resync->resync_ids_inline[i]);
2791         }
2792 }
2793 EXPORT_SYMBOL(lustre_swab_close_data_resync_done);
2794
2795 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2796 {
2797         __swab32s(&lr->lr_event);
2798         __swab32s(&lr->lr_index);
2799         __swab32s(&lr->lr_flags);
2800         __swab32s(&lr->lr_valid);
2801         __swab32s(&lr->lr_speed);
2802         __swab16s(&lr->lr_version);
2803         __swab16s(&lr->lr_active);
2804         __swab16s(&lr->lr_param);
2805         __swab16s(&lr->lr_async_windows);
2806         __swab32s(&lr->lr_flags);
2807         lustre_swab_lu_fid(&lr->lr_fid);
2808         lustre_swab_lu_fid(&lr->lr_fid2);
2809         __swab32s(&lr->lr_comp_id);
2810         CLASSERT(offsetof(typeof(*lr), lr_padding_0) != 0);
2811         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2812         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2813         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2814 }
2815
2816 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2817 {
2818         __swab32s(&lr->lr_status);
2819         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2820         __swab64s(&lr->lr_repaired);
2821 }
2822
2823 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
2824 {
2825         lustre_swab_lu_fid(&rec->lor_fid);
2826         __swab32s(&rec->lor_uid);
2827         __swab32s(&rec->lor_gid);
2828 }
2829
2830 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2831 {
2832         lustre_swab_lu_fid(&ent->loe_key);
2833         lustre_swab_orphan_rec(&ent->loe_rec);
2834 }
2835 EXPORT_SYMBOL(lustre_swab_orphan_ent);
2836
2837 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
2838 {
2839         lustre_swab_lu_fid(&ent->loe_key);
2840         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2841         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2842         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding) != 0);
2843 }
2844 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
2845
2846 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
2847 {
2848         __swab16s(&ladvise->lla_advice);
2849         __swab16s(&ladvise->lla_value1);
2850         __swab32s(&ladvise->lla_value2);
2851         __swab64s(&ladvise->lla_start);
2852         __swab64s(&ladvise->lla_end);
2853         __swab32s(&ladvise->lla_value3);
2854         __swab32s(&ladvise->lla_value4);
2855 }
2856 EXPORT_SYMBOL(lustre_swab_ladvise);
2857
2858 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
2859 {
2860         __swab32s(&ladvise_hdr->lah_magic);
2861         __swab32s(&ladvise_hdr->lah_count);
2862         __swab64s(&ladvise_hdr->lah_flags);
2863         __swab32s(&ladvise_hdr->lah_value1);
2864         __swab32s(&ladvise_hdr->lah_value2);
2865         __swab64s(&ladvise_hdr->lah_value3);
2866 }
2867 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);