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         LASSERT(count > 0);
  64
  65         switch (magic) {
  66         case LUSTRE_MSG_MAGIC_V2:
  67                 return lustre_msg_hdr_size_v2(count);
  68         default:
  69                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  70                 return 0;
  71         }
  72 }
  73
  74 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  75                             __u32 index)
  76 {
  77         if (inout)
  78                 lustre_set_req_swabbed(req, index);
  79         else
  80                 lustre_set_rep_swabbed(req, index);
  81 }
  82
  83 bool ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  84                           __u32 index)
  85 {
  86         if (inout)
  87                 return (ptlrpc_req_need_swab(req) &&
  88                         !lustre_req_swabbed(req, index));
  89
  90         return (ptlrpc_rep_need_swab(req) && !lustre_rep_swabbed(req, index));
  91 }
  92
  93 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  94                                               enum lustre_msg_version version)
  95 {
  96         enum lustre_msg_version ver = lustre_msg_get_version(msg);
  97
  98         return (ver & LUSTRE_VERSION_MASK) != version;
  99 }
 100
 101 int lustre_msg_check_version(struct lustre_msg *msg,
 102                              enum lustre_msg_version version)
 103 {
 104 #define LUSTRE_MSG_MAGIC_V1 0x0BD00BD0
 105         switch (msg->lm_magic) {
 106         case LUSTRE_MSG_MAGIC_V1:
 107                 CERROR("msg v1 not supported - please upgrade you system\n");
 108                 return -EINVAL;
 109         case LUSTRE_MSG_MAGIC_V2:
 110                 return lustre_msg_check_version_v2(msg, version);
 111         default:
 112                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 113                 return -EPROTO;
 114         }
 115 #undef LUSTRE_MSG_MAGIC_V1
 116 }
 117
 118 /* early reply size */
 119 __u32 lustre_msg_early_size()
 120 {
 121         __u32 pblen = sizeof(struct ptlrpc_body);
 122
 123         return lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 124 }
 125 EXPORT_SYMBOL(lustre_msg_early_size);
 126
 127 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
 128 {
 129         __u32 size;
 130         int i;
 131
 132         LASSERT(count > 0);
 133         size = lustre_msg_hdr_size_v2(count);
 134         for (i = 0; i < count; i++)
 135                 size += cfs_size_round(lengths[i]);
 136
 137         return size;
 138 }
 139 EXPORT_SYMBOL(lustre_msg_size_v2);
 140
 141 /*
 142  * This returns the size of the buffer that is required to hold a lustre_msg
 143  * with the given sub-buffer lengths.
 144  * NOTE: this should only be used for NEW requests, and should always be
 145  *       in the form of a v2 request.  If this is a connection to a v1
 146  *       target then the first buffer will be stripped because the ptlrpc
 147  *       data is part of the lustre_msg_v1 header. b=14043
 148  */
 149 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 150 {
 151         __u32 size[] = { sizeof(struct ptlrpc_body) };
 152
 153         if (!lens) {
 154                 LASSERT(count == 1);
 155                 lens = size;
 156         }
 157
 158         LASSERT(count > 0);
 159         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 160
 161         switch (magic) {
 162         case LUSTRE_MSG_MAGIC_V2:
 163                 return lustre_msg_size_v2(count, lens);
 164         default:
 165                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 166                 return 0;
 167         }
 168 }
 169
 170 /*
 171  * This is used to determine the size of a buffer that was already packed
 172  * and will correctly handle the different message formats.
 173  */
 174 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 175 {
 176         switch (msg->lm_magic) {
 177         case LUSTRE_MSG_MAGIC_V2:
 178                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 179         default:
 180                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 181                 return 0;
 182         }
 183 }
 184 EXPORT_SYMBOL(lustre_packed_msg_size);
 185
 186 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 187                         char **bufs)
 188 {
 189         char *ptr;
 190         int i;
 191
 192         LASSERT(count > 0);
 193
 194         msg->lm_bufcount = count;
 195         /* XXX: lm_secflvr uninitialized here */
 196         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 197
 198         for (i = 0; i < count; i++)
 199                 msg->lm_buflens[i] = lens[i];
 200
 201         if (bufs == NULL)
 202                 return;
 203
 204         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 205         for (i = 0; i < count; i++) {
 206                 char *tmp = bufs[i];
 207
 208                 if (tmp)
 209                         memcpy(ptr, tmp, lens[i]);
 210                 ptr += cfs_size_round(lens[i]);
 211         }
 212 }
 213 EXPORT_SYMBOL(lustre_init_msg_v2);
 214
 215 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 216                                   int count, __u32 *lens, char **bufs)
 217 {
 218         int reqlen, rc;
 219
 220         reqlen = lustre_msg_size_v2(count, lens);
 221
 222         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 223         if (rc)
 224                 return rc;
 225
 226         req->rq_reqlen = reqlen;
 227
 228         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 229         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 230         return 0;
 231 }
 232
 233 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 234                         __u32 *lens, char **bufs)
 235 {
 236         __u32 size[] = { sizeof(struct ptlrpc_body) };
 237
 238         if (!lens) {
 239                 LASSERT(count == 1);
 240                 lens = size;
 241         }
 242
 243         LASSERT(count > 0);
 244         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 245
 246         /* only use new format, we don't need to be compatible with 1.4 */
 247         magic = LUSTRE_MSG_MAGIC_V2;
 248
 249         switch (magic) {
 250         case LUSTRE_MSG_MAGIC_V2:
 251                 return lustre_pack_request_v2(req, count, lens, bufs);
 252         default:
 253                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 254                 return -EINVAL;
 255         }
 256 }
 257
 258 #if RS_DEBUG
 259 struct list_head ptlrpc_rs_debug_lru =
 260         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 261 spinlock_t ptlrpc_rs_debug_lock;
 262
 263 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 264 do {                                                                    \
 265         spin_lock(&ptlrpc_rs_debug_lock);                               \
 266         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 267         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 268 } while (0)
 269
 270 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 271 do {                                                                    \
 272         spin_lock(&ptlrpc_rs_debug_lock);                               \
 273         list_del(&(rs)->rs_debug_list);                         \
 274         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 275 } while (0)
 276 #else
 277 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 278 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 279 #endif
 280
 281 struct ptlrpc_reply_state *
 282 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 283 {
 284         struct ptlrpc_reply_state *rs = NULL;
 285
 286         spin_lock(&svcpt->scp_rep_lock);
 287
 288         /* See if we have anything in a pool, and wait if nothing */
 289         while (list_empty(&svcpt->scp_rep_idle)) {
 290                 struct l_wait_info      lwi;
 291                 int                     rc;
 292
 293                 spin_unlock(&svcpt->scp_rep_lock);
 294                 /* If we cannot get anything for some long time, we better
 295                  * bail out instead of waiting infinitely */
 296                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 297                 rc = l_wait_event(svcpt->scp_rep_waitq,
 298                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 299                 if (rc != 0)
 300                         goto out;
 301                 spin_lock(&svcpt->scp_rep_lock);
 302         }
 303
 304         rs = list_entry(svcpt->scp_rep_idle.next,
 305                             struct ptlrpc_reply_state, rs_list);
 306         list_del(&rs->rs_list);
 307
 308         spin_unlock(&svcpt->scp_rep_lock);
 309
 310         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 311         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 312         rs->rs_svcpt = svcpt;
 313         rs->rs_prealloc = 1;
 314 out:
 315         return rs;
 316 }
 317
 318 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 319 {
 320         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 321
 322         spin_lock(&svcpt->scp_rep_lock);
 323         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 324         spin_unlock(&svcpt->scp_rep_lock);
 325         wake_up(&svcpt->scp_rep_waitq);
 326 }
 327
 328 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 329                          __u32 *lens, char **bufs, int flags)
 330 {
 331         struct ptlrpc_reply_state *rs;
 332         int msg_len, rc;
 333         ENTRY;
 334
 335         LASSERT(req->rq_reply_state == NULL);
 336         LASSERT(count > 0);
 337
 338         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 339                 spin_lock(&req->rq_lock);
 340                 req->rq_packed_final = 1;
 341                 spin_unlock(&req->rq_lock);
 342         }
 343
 344         msg_len = lustre_msg_size_v2(count, lens);
 345         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 346         if (rc)
 347                 RETURN(rc);
 348
 349         rs = req->rq_reply_state;
 350         atomic_set(&rs->rs_refcount, 1); /* 1 ref for rq_reply_state */
 351         rs->rs_cb_id.cbid_fn = reply_out_callback;
 352         rs->rs_cb_id.cbid_arg = rs;
 353         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 354         INIT_LIST_HEAD(&rs->rs_exp_list);
 355         INIT_LIST_HEAD(&rs->rs_obd_list);
 356         INIT_LIST_HEAD(&rs->rs_list);
 357         spin_lock_init(&rs->rs_lock);
 358
 359         req->rq_replen = msg_len;
 360         req->rq_reply_state = rs;
 361         req->rq_repmsg = rs->rs_msg;
 362
 363         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 364         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 365
 366         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 367
 368         RETURN(0);
 369 }
 370 EXPORT_SYMBOL(lustre_pack_reply_v2);
 371
 372 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 373                             char **bufs, int flags)
 374 {
 375         int rc = 0;
 376         __u32 size[] = { sizeof(struct ptlrpc_body) };
 377
 378         if (!lens) {
 379                 LASSERT(count == 1);
 380                 lens = size;
 381         }
 382
 383         LASSERT(count > 0);
 384         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 385
 386         switch (req->rq_reqmsg->lm_magic) {
 387         case LUSTRE_MSG_MAGIC_V2:
 388                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 389                 break;
 390         default:
 391                 LASSERTF(0, "incorrect message magic: %08x\n",
 392                          req->rq_reqmsg->lm_magic);
 393                 rc = -EINVAL;
 394         }
 395         if (rc != 0)
 396                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 397                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 398         return rc;
 399 }
 400
 401 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 402                       char **bufs)
 403 {
 404         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 405 }
 406 EXPORT_SYMBOL(lustre_pack_reply);
 407
 408 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
 409 {
 410         __u32 i, offset, buflen, bufcount;
 411
 412         LASSERT(m != NULL);
 413         LASSERT(m->lm_bufcount > 0);
 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 static int lustre_grow_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 510                               unsigned int newlen)
 511 {
 512         char *tail = NULL, *newpos;
 513         int tail_len = 0, n;
 514
 515         LASSERT(msg);
 516         LASSERT(msg->lm_bufcount > segment);
 517         LASSERT(msg->lm_buflens[segment] <= newlen);
 518
 519         if (msg->lm_buflens[segment] == newlen)
 520                 goto out;
 521
 522         if (msg->lm_bufcount > segment + 1) {
 523                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 524                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 525                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 526         }
 527
 528         msg->lm_buflens[segment] = newlen;
 529
 530         if (tail && tail_len) {
 531                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 532                 memmove(newpos, tail, tail_len);
 533         }
 534 out:
 535         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 536 }
 537
 538 /*
 539  * for @msg, grow @segment to size @newlen.
 540  * Always move higher buffer forward.
 541  *
 542  * return new msg size after growing.
 543  *
 544  * CAUTION:
 545  * - caller must make sure there is enough space in allocated message buffer
 546  * - caller should NOT keep pointers to msg buffers which higher than @segment
 547  *   after call shrink.
 548  */
 549 int lustre_grow_msg(struct lustre_msg *msg, int segment, unsigned int newlen)
 550 {
 551         switch (msg->lm_magic) {
 552         case LUSTRE_MSG_MAGIC_V2:
 553                 return lustre_grow_msg_v2(msg, segment, newlen);
 554         default:
 555                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 556         }
 557 }
 558 EXPORT_SYMBOL(lustre_grow_msg);
 559
 560 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 561 {
 562         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 563
 564         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 565         LASSERT(!rs->rs_difficult || rs->rs_handled);
 566         LASSERT(!rs->rs_on_net);
 567         LASSERT(!rs->rs_scheduled);
 568         LASSERT(rs->rs_export == NULL);
 569         LASSERT(rs->rs_nlocks == 0);
 570         LASSERT(list_empty(&rs->rs_exp_list));
 571         LASSERT(list_empty(&rs->rs_obd_list));
 572
 573         sptlrpc_svc_free_rs(rs);
 574 }
 575
 576 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 577 {
 578         int swabbed, required_len, i, buflen;
 579
 580         /* Now we know the sender speaks my language. */
 581         required_len = lustre_msg_hdr_size_v2(0);
 582         if (len < required_len) {
 583                 /* can't even look inside the message */
 584                 CERROR("message length %d too small for lustre_msg\n", len);
 585                 return -EINVAL;
 586         }
 587
 588         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 589
 590         if (swabbed) {
 591                 __swab32s(&m->lm_magic);
 592                 __swab32s(&m->lm_bufcount);
 593                 __swab32s(&m->lm_secflvr);
 594                 __swab32s(&m->lm_repsize);
 595                 __swab32s(&m->lm_cksum);
 596                 __swab32s(&m->lm_flags);
 597                 BUILD_BUG_ON(offsetof(typeof(*m), lm_padding_2) == 0);
 598                 BUILD_BUG_ON(offsetof(typeof(*m), lm_padding_3) == 0);
 599         }
 600
 601         if (m->lm_bufcount == 0 || m->lm_bufcount > PTLRPC_MAX_BUFCOUNT) {
 602                 CERROR("message bufcount %d is not valid\n", m->lm_bufcount);
 603                 return -EINVAL;
 604         }
 605         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 606         if (len < required_len) {
 607                 /* didn't receive all the buffer lengths */
 608                 CERROR("message length %d too small for %d buflens\n",
 609                        len, m->lm_bufcount);
 610                 return -EINVAL;
 611         }
 612
 613         for (i = 0; i < m->lm_bufcount; i++) {
 614                 if (swabbed)
 615                         __swab32s(&m->lm_buflens[i]);
 616                 buflen = cfs_size_round(m->lm_buflens[i]);
 617                 if (buflen < 0 || buflen > PTLRPC_MAX_BUFLEN) {
 618                         CERROR("buffer %d length %d is not valid\n", i, buflen);
 619                         return -EINVAL;
 620                 }
 621                 required_len += buflen;
 622         }
 623         if (len < required_len || required_len > PTLRPC_MAX_BUFLEN) {
 624                 CERROR("len: %d, required_len %d, bufcount: %d\n",
 625                        len, required_len, m->lm_bufcount);
 626                 for (i = 0; i < m->lm_bufcount; i++)
 627                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 628                 return -EINVAL;
 629         }
 630
 631         return swabbed;
 632 }
 633
 634 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 635 {
 636         int required_len, rc;
 637
 638         ENTRY;
 639         /*
 640          * We can provide a slightly better error log, if we check the
 641          * message magic and version first.  In the future, struct
 642          * lustre_msg may grow, and we'd like to log a version mismatch,
 643          * rather than a short message.
 644          */
 645         required_len = offsetof(struct lustre_msg, lm_magic) +
 646                                 sizeof(m->lm_magic);
 647         if (len < required_len) {
 648                 /* can't even look inside the message */
 649                 CERROR("message length %d too small for magic/version check\n",
 650                        len);
 651                 RETURN(-EINVAL);
 652         }
 653
 654         rc = lustre_unpack_msg_v2(m, len);
 655
 656         RETURN(rc);
 657 }
 658 EXPORT_SYMBOL(__lustre_unpack_msg);
 659
 660 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 661 {
 662         int rc;
 663
 664         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 665         if (rc == 1) {
 666                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 667                 rc = 0;
 668         }
 669         return rc;
 670 }
 671
 672 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 673 {
 674         int rc;
 675
 676         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 677         if (rc == 1) {
 678                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 679                 rc = 0;
 680         }
 681         return rc;
 682 }
 683
 684 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 685                                                const int inout, int offset)
 686 {
 687         struct ptlrpc_body *pb;
 688         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 689
 690         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 691         if (!pb) {
 692                 CERROR("error unpacking ptlrpc body\n");
 693                 return -EFAULT;
 694         }
 695         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 696                 lustre_swab_ptlrpc_body(pb);
 697                 ptlrpc_buf_set_swabbed(req, inout, offset);
 698         }
 699
 700         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 701                 CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 702                 return -EINVAL;
 703         }
 704
 705         if (!inout)
 706                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 707
 708         return 0;
 709 }
 710
 711 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 712 {
 713         switch (req->rq_reqmsg->lm_magic) {
 714         case LUSTRE_MSG_MAGIC_V2:
 715                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 716         default:
 717                 CERROR("bad lustre msg magic: %08x\n",
 718                        req->rq_reqmsg->lm_magic);
 719                 return -EINVAL;
 720         }
 721 }
 722
 723 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 724 {
 725         switch (req->rq_repmsg->lm_magic) {
 726         case LUSTRE_MSG_MAGIC_V2:
 727                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 728         default:
 729                 CERROR("bad lustre msg magic: %08x\n",
 730                        req->rq_repmsg->lm_magic);
 731                 return -EINVAL;
 732         }
 733 }
 734
 735 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 736 {
 737         if (n >= m->lm_bufcount)
 738                 return 0;
 739
 740         return m->lm_buflens[n];
 741 }
 742
 743 /**
 744  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 745  * \param m lustre_msg (request or reply) to look at
 746  * \param n message index (base 0)
 747  *
 748  * returns zero for non-existent message indices
 749  */
 750 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 751 {
 752         switch (m->lm_magic) {
 753         case LUSTRE_MSG_MAGIC_V2:
 754                 return lustre_msg_buflen_v2(m, n);
 755         default:
 756                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 757                 return 0;
 758         }
 759 }
 760 EXPORT_SYMBOL(lustre_msg_buflen);
 761
 762 static inline void
 763 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 764 {
 765         if (n >= m->lm_bufcount)
 766                 LBUG();
 767
 768         m->lm_buflens[n] = len;
 769 }
 770
 771 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 772 {
 773         switch (m->lm_magic) {
 774         case LUSTRE_MSG_MAGIC_V2:
 775                 lustre_msg_set_buflen_v2(m, n, len);
 776                 return;
 777         default:
 778                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 779         }
 780 }
 781
 782 /*
 783  * NB return the bufcount for lustre_msg_v2 format, so if message is packed
 784  * in V1 format, the result is one bigger. (add struct ptlrpc_body).
 785  */
 786 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 787 {
 788         switch (m->lm_magic) {
 789         case LUSTRE_MSG_MAGIC_V2:
 790                 return m->lm_bufcount;
 791         default:
 792                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 793                 return 0;
 794         }
 795 }
 796
 797 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 798 {
 799         /* max_len == 0 means the string should fill the buffer */
 800         char *str;
 801         __u32 slen, blen;
 802
 803         switch (m->lm_magic) {
 804         case LUSTRE_MSG_MAGIC_V2:
 805                 str = lustre_msg_buf_v2(m, index, 0);
 806                 blen = lustre_msg_buflen_v2(m, index);
 807                 break;
 808         default:
 809                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 810         }
 811
 812         if (str == NULL) {
 813                 CERROR("can't unpack string in msg %p buffer[%d]\n", m, index);
 814                 return NULL;
 815         }
 816
 817         slen = strnlen(str, blen);
 818
 819         if (slen == blen) { /* not NULL terminated */
 820                 CERROR("can't unpack non-NULL terminated string in msg %p buffer[%d] len %d\n",
 821                        m, index, blen);
 822                 return NULL;
 823         }
 824         if (blen > PTLRPC_MAX_BUFLEN) {
 825                 CERROR("buffer length of msg %p buffer[%d] is invalid(%d)\n",
 826                        m, index, blen);
 827                 return NULL;
 828         }
 829
 830         if (max_len == 0) {
 831                 if (slen != blen - 1) {
 832                         CERROR("can't unpack short string in msg %p buffer[%d] len %d: strlen %d\n",
 833                                m, index, blen, slen);
 834                         return NULL;
 835                 }
 836         } else if (slen > max_len) {
 837                 CERROR("can't unpack oversized string in msg %p buffer[%d] len %d strlen %d: max %d expected\n",
 838                        m, index, blen, slen, max_len);
 839                 return NULL;
 840         }
 841
 842         return str;
 843 }
 844
 845 /* Wrap up the normal fixed length cases */
 846 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 847                                       __u32 min_size, void *swabber)
 848 {
 849         void *ptr = NULL;
 850
 851         LASSERT(msg != NULL);
 852         switch (msg->lm_magic) {
 853         case LUSTRE_MSG_MAGIC_V2:
 854                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 855                 break;
 856         default:
 857                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 858         }
 859
 860         if (ptr != NULL && swabber != NULL)
 861                 ((void (*)(void *))swabber)(ptr);
 862
 863         return ptr;
 864 }
 865
 866 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 867 {
 868         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 869                                  sizeof(struct ptlrpc_body_v2));
 870 }
 871
 872 enum lustre_msghdr lustre_msghdr_get_flags(struct lustre_msg *msg)
 873 {
 874         switch (msg->lm_magic) {
 875         case LUSTRE_MSG_MAGIC_V2:
 876                 /* already in host endian */
 877                 return msg->lm_flags;
 878         default:
 879                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 880                 return 0;
 881         }
 882 }
 883 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 884
 885 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 886 {
 887         switch (msg->lm_magic) {
 888         case LUSTRE_MSG_MAGIC_V2:
 889                 msg->lm_flags = flags;
 890                 return;
 891         default:
 892                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 893         }
 894 }
 895
 896 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 897 {
 898         switch (msg->lm_magic) {
 899         case LUSTRE_MSG_MAGIC_V2: {
 900                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 901                 if (pb != NULL)
 902                         return pb->pb_flags;
 903
 904                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 905         }
 906         /* fallthrough */
 907         default:
 908                 /*
 909                  * flags might be printed in debug code while message
 910                  * uninitialized
 911                  */
 912                 return 0;
 913         }
 914 }
 915 EXPORT_SYMBOL(lustre_msg_get_flags);
 916
 917 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 918 {
 919         switch (msg->lm_magic) {
 920         case LUSTRE_MSG_MAGIC_V2: {
 921                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 922                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 923                 pb->pb_flags |= flags;
 924                 return;
 925         }
 926         default:
 927                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 928         }
 929 }
 930 EXPORT_SYMBOL(lustre_msg_add_flags);
 931
 932 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
 933 {
 934         switch (msg->lm_magic) {
 935         case LUSTRE_MSG_MAGIC_V2: {
 936                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 937                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 938                 pb->pb_flags = flags;
 939                 return;
 940         }
 941         default:
 942                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 943         }
 944 }
 945
 946 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 947 {
 948         switch (msg->lm_magic) {
 949         case LUSTRE_MSG_MAGIC_V2: {
 950                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 951                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 952                 pb->pb_flags &= ~flags;
 953
 954                 return;
 955         }
 956         default:
 957                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 958         }
 959 }
 960 EXPORT_SYMBOL(lustre_msg_clear_flags);
 961
 962 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 963 {
 964         switch (msg->lm_magic) {
 965         case LUSTRE_MSG_MAGIC_V2: {
 966                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 967                 if (pb != NULL)
 968                         return pb->pb_op_flags;
 969
 970                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 971         }
 972         /* fallthrough */
 973         default:
 974                 return 0;
 975         }
 976 }
 977
 978 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 979 {
 980         switch (msg->lm_magic) {
 981         case LUSTRE_MSG_MAGIC_V2: {
 982                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 983                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 984                 pb->pb_op_flags |= flags;
 985                 return;
 986         }
 987         default:
 988                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 989         }
 990 }
 991 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 992
 993 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 994 {
 995         switch (msg->lm_magic) {
 996         case LUSTRE_MSG_MAGIC_V2: {
 997                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 998                 if (pb == NULL) {
 999                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1000                         return NULL;
1001                 }
1002                 return &pb->pb_handle;
1003         }
1004         default:
1005                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1006                 return NULL;
1007         }
1008 }
1009
1010 __u32 lustre_msg_get_type(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 PTL_RPC_MSG_ERR;
1018                 }
1019                 return pb->pb_type;
1020         }
1021         default:
1022                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1023                 return PTL_RPC_MSG_ERR;
1024         }
1025 }
1026 EXPORT_SYMBOL(lustre_msg_get_type);
1027
1028 enum lustre_msg_version lustre_msg_get_version(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 == NULL) {
1034                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1035                         return 0;
1036                 }
1037                 return pb->pb_version;
1038         }
1039         default:
1040                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1041                 return 0;
1042         }
1043 }
1044
1045 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
1046 {
1047         switch (msg->lm_magic) {
1048         case LUSTRE_MSG_MAGIC_V2: {
1049                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1050                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1051                 pb->pb_version |= version;
1052                 return;
1053         }
1054         default:
1055                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1056         }
1057 }
1058
1059 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1060 {
1061         switch (msg->lm_magic) {
1062         case LUSTRE_MSG_MAGIC_V2: {
1063                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1064                 if (pb == NULL) {
1065                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1066                         return 0;
1067                 }
1068                 return pb->pb_opc;
1069         }
1070         default:
1071                 CERROR("incorrect message magic: %08x (msg:%p)\n",
1072                        msg->lm_magic, msg);
1073                 return 0;
1074         }
1075 }
1076 EXPORT_SYMBOL(lustre_msg_get_opc);
1077
1078 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1079 {
1080         switch (msg->lm_magic) {
1081         case LUSTRE_MSG_MAGIC_V2: {
1082                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1083                 if (pb == NULL) {
1084                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1085                         return 0;
1086                 }
1087                 return pb->pb_last_xid;
1088         }
1089         default:
1090                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1091                 return 0;
1092         }
1093 }
1094 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1095
1096 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1097 {
1098         switch (msg->lm_magic) {
1099         case LUSTRE_MSG_MAGIC_V2: {
1100                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1101                 if (!pb) {
1102                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1103                         return 0;
1104                 }
1105                 return pb->pb_tag;
1106         }
1107         default:
1108                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1109                 return 0;
1110         }
1111 }
1112 EXPORT_SYMBOL(lustre_msg_get_tag);
1113
1114 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1115 {
1116         switch (msg->lm_magic) {
1117         case LUSTRE_MSG_MAGIC_V2: {
1118                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1119                 if (pb == NULL) {
1120                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1121                         return 0;
1122                 }
1123                 return pb->pb_last_committed;
1124         }
1125         default:
1126                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1127                 return 0;
1128         }
1129 }
1130 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1131
1132 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1133 {
1134         switch (msg->lm_magic) {
1135         case LUSTRE_MSG_MAGIC_V2: {
1136                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1137                 if (pb == NULL) {
1138                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1139                         return NULL;
1140                 }
1141                 return pb->pb_pre_versions;
1142         }
1143         default:
1144                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1145                 return NULL;
1146         }
1147 }
1148 EXPORT_SYMBOL(lustre_msg_get_versions);
1149
1150 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1151 {
1152         switch (msg->lm_magic) {
1153         case LUSTRE_MSG_MAGIC_V2: {
1154                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1155                 if (pb == NULL) {
1156                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1157                         return 0;
1158                 }
1159                 return pb->pb_transno;
1160         }
1161         default:
1162                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1163                 return 0;
1164         }
1165 }
1166 EXPORT_SYMBOL(lustre_msg_get_transno);
1167
1168 int lustre_msg_get_status(struct lustre_msg *msg)
1169 {
1170         switch (msg->lm_magic) {
1171         case LUSTRE_MSG_MAGIC_V2: {
1172                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1173                 if (pb != NULL)
1174                         return pb->pb_status;
1175                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1176         }
1177         /* fallthrough */
1178         default:
1179                 /*
1180                  * status might be printed in debug code while message
1181                  * uninitialized
1182                  */
1183                 return -EINVAL;
1184         }
1185 }
1186 EXPORT_SYMBOL(lustre_msg_get_status);
1187
1188 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1189 {
1190         switch (msg->lm_magic) {
1191         case LUSTRE_MSG_MAGIC_V2: {
1192                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1193                 if (pb == NULL) {
1194                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1195                         return -EINVAL;
1196                 }
1197                 return pb->pb_slv;
1198         }
1199         default:
1200                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1201                 return -EINVAL;
1202         }
1203 }
1204
1205
1206 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1207 {
1208         switch (msg->lm_magic) {
1209         case LUSTRE_MSG_MAGIC_V2: {
1210                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1211                 if (pb == NULL) {
1212                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1213                         return;
1214                 }
1215                 pb->pb_slv = slv;
1216                 return;
1217         }
1218         default:
1219                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1220                 return;
1221         }
1222 }
1223
1224 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1225 {
1226         switch (msg->lm_magic) {
1227         case LUSTRE_MSG_MAGIC_V2: {
1228                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1229                 if (pb == NULL) {
1230                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1231                         return -EINVAL;
1232                 }
1233                 return pb->pb_limit;
1234         }
1235         default:
1236                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1237                 return -EINVAL;
1238         }
1239 }
1240
1241
1242 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1243 {
1244         switch (msg->lm_magic) {
1245         case LUSTRE_MSG_MAGIC_V2: {
1246                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1247                 if (pb == NULL) {
1248                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1249                         return;
1250                 }
1251                 pb->pb_limit = limit;
1252                 return;
1253         }
1254         default:
1255                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1256                 return;
1257         }
1258 }
1259
1260 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1261 {
1262         switch (msg->lm_magic) {
1263         case LUSTRE_MSG_MAGIC_V2: {
1264                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1265                 if (pb == NULL) {
1266                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1267                         return 0;
1268                 }
1269                 return pb->pb_conn_cnt;
1270         }
1271         default:
1272                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1273                 return 0;
1274         }
1275 }
1276 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1277
1278 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1279 {
1280         switch (msg->lm_magic) {
1281         case LUSTRE_MSG_MAGIC_V2:
1282                 return msg->lm_magic;
1283         default:
1284                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1285                 return 0;
1286         }
1287 }
1288
1289 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1290 {
1291         switch (msg->lm_magic) {
1292         case LUSTRE_MSG_MAGIC_V2: {
1293                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1294                 if (pb == NULL) {
1295                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1296                         return 0;
1297                 }
1298                 return pb->pb_timeout;
1299         }
1300         default:
1301                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1302                 return 0;
1303         }
1304 }
1305
1306 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1307 {
1308         switch (msg->lm_magic) {
1309         case LUSTRE_MSG_MAGIC_V2: {
1310                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1311                 if (pb == NULL) {
1312                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1313                         return 0;
1314                 }
1315                 return pb->pb_service_time;
1316         }
1317         default:
1318                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1319                 return 0;
1320         }
1321 }
1322
1323 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1324 {
1325         switch (msg->lm_magic) {
1326         case LUSTRE_MSG_MAGIC_V2: {
1327                 struct ptlrpc_body *pb;
1328
1329                 /* the old pltrpc_body_v2 is smaller; doesn't include jobid */
1330                 if (msg->lm_buflens[MSG_PTLRPC_BODY_OFF] <
1331                     sizeof(struct ptlrpc_body))
1332                         return NULL;
1333
1334                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1335                                           sizeof(struct ptlrpc_body));
1336                 if (!pb)
1337                         return NULL;
1338
1339                 return pb->pb_jobid;
1340         }
1341         default:
1342                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1343                 return NULL;
1344         }
1345 }
1346 EXPORT_SYMBOL(lustre_msg_get_jobid);
1347
1348 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1349 {
1350         switch (msg->lm_magic) {
1351         case LUSTRE_MSG_MAGIC_V2:
1352                 return msg->lm_cksum;
1353         default:
1354                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1355                 return 0;
1356         }
1357 }
1358
1359 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1360 {
1361         switch (msg->lm_magic) {
1362         case LUSTRE_MSG_MAGIC_V2: {
1363                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1364                 if (pb == NULL) {
1365                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1366                         return 0;
1367                 }
1368                 return pb->pb_mbits;
1369         }
1370         default:
1371                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1372                 return 0;
1373         }
1374 }
1375
1376 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1377 {
1378         switch (msg->lm_magic) {
1379         case LUSTRE_MSG_MAGIC_V2: {
1380                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1381                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1382
1383                 unsigned int hsize = 4;
1384                 __u32 crc;
1385
1386                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1387                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1388                                        len, NULL, 0, (unsigned char *)&crc,
1389                                        &hsize);
1390                 return crc;
1391         }
1392         default:
1393                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1394                 return 0;
1395         }
1396 }
1397
1398 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1399 {
1400         switch (msg->lm_magic) {
1401         case LUSTRE_MSG_MAGIC_V2: {
1402                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1403                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1404                 pb->pb_handle = *handle;
1405                 return;
1406         }
1407         default:
1408                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1409         }
1410 }
1411
1412 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1413 {
1414         switch (msg->lm_magic) {
1415         case LUSTRE_MSG_MAGIC_V2: {
1416                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1417                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1418                 pb->pb_type = type;
1419                 return;
1420                 }
1421         default:
1422                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1423         }
1424 }
1425
1426 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
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, "invalid msg %p: no ptlrpc body!\n", msg);
1432                 pb->pb_opc = opc;
1433                 return;
1434         }
1435         default:
1436                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1437         }
1438 }
1439
1440 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1441 {
1442         switch (msg->lm_magic) {
1443         case LUSTRE_MSG_MAGIC_V2: {
1444                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1445                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1446                 pb->pb_last_xid = last_xid;
1447                 return;
1448         }
1449         default:
1450                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1451         }
1452 }
1453 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1454
1455 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1456 {
1457         switch (msg->lm_magic) {
1458         case LUSTRE_MSG_MAGIC_V2: {
1459                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1460                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1461                 pb->pb_tag = tag;
1462                 return;
1463         }
1464         default:
1465                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1466         }
1467 }
1468 EXPORT_SYMBOL(lustre_msg_set_tag);
1469
1470 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
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_last_committed = last_committed;
1477                 return;
1478         }
1479         default:
1480                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1481         }
1482 }
1483
1484 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
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 != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1490                 pb->pb_pre_versions[0] = versions[0];
1491                 pb->pb_pre_versions[1] = versions[1];
1492                 pb->pb_pre_versions[2] = versions[2];
1493                 pb->pb_pre_versions[3] = versions[3];
1494                 return;
1495         }
1496         default:
1497                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1498         }
1499 }
1500 EXPORT_SYMBOL(lustre_msg_set_versions);
1501
1502 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1503 {
1504         switch (msg->lm_magic) {
1505         case LUSTRE_MSG_MAGIC_V2: {
1506                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1507                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1508                 pb->pb_transno = transno;
1509                 return;
1510         }
1511         default:
1512                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1513         }
1514 }
1515 EXPORT_SYMBOL(lustre_msg_set_transno);
1516
1517 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1518 {
1519         switch (msg->lm_magic) {
1520         case LUSTRE_MSG_MAGIC_V2: {
1521                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1522                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1523                 pb->pb_status = status;
1524                 return;
1525         }
1526         default:
1527                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1528         }
1529 }
1530 EXPORT_SYMBOL(lustre_msg_set_status);
1531
1532 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1533 {
1534         switch (msg->lm_magic) {
1535         case LUSTRE_MSG_MAGIC_V2: {
1536                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1537                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1538                 pb->pb_conn_cnt = conn_cnt;
1539                 return;
1540         }
1541         default:
1542                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1543         }
1544 }
1545
1546 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1547 {
1548         switch (msg->lm_magic) {
1549         case LUSTRE_MSG_MAGIC_V2: {
1550                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1551                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1552                 pb->pb_timeout = timeout;
1553                 return;
1554         }
1555         default:
1556                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1557         }
1558 }
1559
1560 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1561 {
1562         switch (msg->lm_magic) {
1563         case LUSTRE_MSG_MAGIC_V2: {
1564                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1565                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1566                 pb->pb_service_time = service_time;
1567                 return;
1568         }
1569         default:
1570                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1571         }
1572 }
1573
1574 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1575 {
1576         switch (msg->lm_magic) {
1577         case LUSTRE_MSG_MAGIC_V2: {
1578                 __u32 opc = lustre_msg_get_opc(msg);
1579                 struct ptlrpc_body *pb;
1580
1581                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1582                  * See the comment in ptlrpc_request_pack(). */
1583                 if (!opc || opc == LDLM_BL_CALLBACK ||
1584                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1585                         return;
1586
1587                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1588                                        sizeof(struct ptlrpc_body));
1589                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1590
1591                 if (jobid != NULL)
1592                         memcpy(pb->pb_jobid, jobid, sizeof(pb->pb_jobid));
1593                 else if (pb->pb_jobid[0] == '\0')
1594                         lustre_get_jobid(pb->pb_jobid, sizeof(pb->pb_jobid));
1595                 return;
1596         }
1597         default:
1598                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1599         }
1600 }
1601 EXPORT_SYMBOL(lustre_msg_set_jobid);
1602
1603 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1604 {
1605         switch (msg->lm_magic) {
1606         case LUSTRE_MSG_MAGIC_V2:
1607                 msg->lm_cksum = cksum;
1608                 return;
1609         default:
1610                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1611         }
1612 }
1613
1614 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1615 {
1616         switch (msg->lm_magic) {
1617         case LUSTRE_MSG_MAGIC_V2: {
1618                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1619
1620                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1621                 pb->pb_mbits = mbits;
1622                 return;
1623         }
1624         default:
1625                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1626         }
1627 }
1628
1629 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1630 {
1631         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1632
1633         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1634                                          req->rq_pill.rc_area[RCL_SERVER]);
1635         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1636                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1637 }
1638 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1639
1640 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1641 {
1642         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1643         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1644                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1645 }
1646
1647 /**
1648  * Send a remote set_info_async.
1649  *
1650  * This may go from client to server or server to client.
1651  */
1652 int do_set_info_async(struct obd_import *imp,
1653                       int opcode, int version,
1654                       size_t keylen, void *key,
1655                       size_t vallen, void *val,
1656                       struct ptlrpc_request_set *set)
1657 {
1658         struct ptlrpc_request *req;
1659         char *tmp;
1660         int rc;
1661
1662         ENTRY;
1663         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1664         if (req == NULL)
1665                 RETURN(-ENOMEM);
1666
1667         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1668                              RCL_CLIENT, keylen);
1669         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1670                              RCL_CLIENT, vallen);
1671         rc = ptlrpc_request_pack(req, version, opcode);
1672         if (rc) {
1673                 ptlrpc_request_free(req);
1674                 RETURN(rc);
1675         }
1676
1677         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1678         memcpy(tmp, key, keylen);
1679         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1680         memcpy(tmp, val, vallen);
1681
1682         ptlrpc_request_set_replen(req);
1683
1684         if (set) {
1685                 ptlrpc_set_add_req(set, req);
1686                 ptlrpc_check_set(NULL, set);
1687         } else {
1688                 rc = ptlrpc_queue_wait(req);
1689                 ptlrpc_req_finished(req);
1690         }
1691
1692         RETURN(rc);
1693 }
1694 EXPORT_SYMBOL(do_set_info_async);
1695
1696 /* byte flipping routines for all wire types declared in
1697  * lustre_idl.h implemented here.
1698  */
1699 void lustre_swab_ptlrpc_body(struct ptlrpc_body *body)
1700 {
1701         __swab32s(&body->pb_type);
1702         __swab32s(&body->pb_version);
1703         __swab32s(&body->pb_opc);
1704         __swab32s(&body->pb_status);
1705         __swab64s(&body->pb_last_xid);
1706         __swab16s(&body->pb_tag);
1707         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding0) == 0);
1708         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding1) == 0);
1709         __swab64s(&body->pb_last_committed);
1710         __swab64s(&body->pb_transno);
1711         __swab32s(&body->pb_flags);
1712         __swab32s(&body->pb_op_flags);
1713         __swab32s(&body->pb_conn_cnt);
1714         __swab32s(&body->pb_timeout);
1715         __swab32s(&body->pb_service_time);
1716         __swab32s(&body->pb_limit);
1717         __swab64s(&body->pb_slv);
1718         __swab64s(&body->pb_pre_versions[0]);
1719         __swab64s(&body->pb_pre_versions[1]);
1720         __swab64s(&body->pb_pre_versions[2]);
1721         __swab64s(&body->pb_pre_versions[3]);
1722         __swab64s(&body->pb_mbits);
1723         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_0) == 0);
1724         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_1) == 0);
1725         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_2) == 0);
1726         /*
1727          * While we need to maintain compatibility between
1728          * clients and servers without ptlrpc_body_v2 (< 2.3)
1729          * do not swab any fields beyond pb_jobid, as we are
1730          * using this swab function for both ptlrpc_body
1731          * and ptlrpc_body_v2.
1732          */
1733         /* pb_jobid is an ASCII string and should not be swabbed */
1734         BUILD_BUG_ON(offsetof(typeof(*body), pb_jobid) == 0);
1735 }
1736
1737 void lustre_swab_connect(struct obd_connect_data *ocd)
1738 {
1739         __swab64s(&ocd->ocd_connect_flags);
1740         __swab32s(&ocd->ocd_version);
1741         __swab32s(&ocd->ocd_grant);
1742         __swab64s(&ocd->ocd_ibits_known);
1743         __swab32s(&ocd->ocd_index);
1744         __swab32s(&ocd->ocd_brw_size);
1745         /*
1746          * ocd_blocksize and ocd_inodespace don't need to be swabbed because
1747          * they are 8-byte values
1748          */
1749         __swab16s(&ocd->ocd_grant_tax_kb);
1750         __swab32s(&ocd->ocd_grant_max_blks);
1751         __swab64s(&ocd->ocd_transno);
1752         __swab32s(&ocd->ocd_group);
1753         __swab32s(&ocd->ocd_cksum_types);
1754         __swab32s(&ocd->ocd_instance);
1755         /*
1756          * Fields after ocd_cksum_types are only accessible by the receiver
1757          * if the corresponding flag in ocd_connect_flags is set. Accessing
1758          * any field after ocd_maxbytes on the receiver without a valid flag
1759          * may result in out-of-bound memory access and kernel oops.
1760          */
1761         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1762                 __swab32s(&ocd->ocd_max_easize);
1763         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1764                 __swab64s(&ocd->ocd_maxbytes);
1765         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1766                 __swab16s(&ocd->ocd_maxmodrpcs);
1767         BUILD_BUG_ON(offsetof(typeof(*ocd), padding0) == 0);
1768         BUILD_BUG_ON(offsetof(typeof(*ocd), padding1) == 0);
1769         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1770                 __swab64s(&ocd->ocd_connect_flags2);
1771         BUILD_BUG_ON(offsetof(typeof(*ocd), padding3) == 0);
1772         BUILD_BUG_ON(offsetof(typeof(*ocd), padding4) == 0);
1773         BUILD_BUG_ON(offsetof(typeof(*ocd), padding5) == 0);
1774         BUILD_BUG_ON(offsetof(typeof(*ocd), padding6) == 0);
1775         BUILD_BUG_ON(offsetof(typeof(*ocd), padding7) == 0);
1776         BUILD_BUG_ON(offsetof(typeof(*ocd), padding8) == 0);
1777         BUILD_BUG_ON(offsetof(typeof(*ocd), padding9) == 0);
1778         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingA) == 0);
1779         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingB) == 0);
1780         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingC) == 0);
1781         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingD) == 0);
1782         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingE) == 0);
1783         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingF) == 0);
1784 }
1785
1786 static void lustre_swab_ost_layout(struct ost_layout *ol)
1787 {
1788         __swab32s(&ol->ol_stripe_size);
1789         __swab32s(&ol->ol_stripe_count);
1790         __swab64s(&ol->ol_comp_start);
1791         __swab64s(&ol->ol_comp_end);
1792         __swab32s(&ol->ol_comp_id);
1793 }
1794
1795 void lustre_swab_obdo(struct obdo *o)
1796 {
1797         __swab64s(&o->o_valid);
1798         lustre_swab_ost_id(&o->o_oi);
1799         __swab64s(&o->o_parent_seq);
1800         __swab64s(&o->o_size);
1801         __swab64s(&o->o_mtime);
1802         __swab64s(&o->o_atime);
1803         __swab64s(&o->o_ctime);
1804         __swab64s(&o->o_blocks);
1805         __swab64s(&o->o_grant);
1806         __swab32s(&o->o_blksize);
1807         __swab32s(&o->o_mode);
1808         __swab32s(&o->o_uid);
1809         __swab32s(&o->o_gid);
1810         __swab32s(&o->o_flags);
1811         __swab32s(&o->o_nlink);
1812         __swab32s(&o->o_parent_oid);
1813         __swab32s(&o->o_misc);
1814         __swab64s(&o->o_ioepoch);
1815         __swab32s(&o->o_stripe_idx);
1816         __swab32s(&o->o_parent_ver);
1817         lustre_swab_ost_layout(&o->o_layout);
1818         __swab32s(&o->o_layout_version);
1819         __swab32s(&o->o_uid_h);
1820         __swab32s(&o->o_gid_h);
1821         __swab64s(&o->o_data_version);
1822         __swab32s(&o->o_projid);
1823         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_4) == 0);
1824         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_5) == 0);
1825         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_6) == 0);
1826
1827 }
1828 EXPORT_SYMBOL(lustre_swab_obdo);
1829
1830 void lustre_swab_obd_statfs(struct obd_statfs *os)
1831 {
1832         __swab64s(&os->os_type);
1833         __swab64s(&os->os_blocks);
1834         __swab64s(&os->os_bfree);
1835         __swab64s(&os->os_bavail);
1836         __swab64s(&os->os_files);
1837         __swab64s(&os->os_ffree);
1838         /* no need to swab os_fsid */
1839         __swab32s(&os->os_bsize);
1840         __swab32s(&os->os_namelen);
1841         __swab64s(&os->os_maxbytes);
1842         __swab32s(&os->os_state);
1843         __swab32s(&os->os_fprecreated);
1844         __swab32s(&os->os_granted);
1845         BUILD_BUG_ON(offsetof(typeof(*os), os_spare3) == 0);
1846         BUILD_BUG_ON(offsetof(typeof(*os), os_spare4) == 0);
1847         BUILD_BUG_ON(offsetof(typeof(*os), os_spare5) == 0);
1848         BUILD_BUG_ON(offsetof(typeof(*os), os_spare6) == 0);
1849         BUILD_BUG_ON(offsetof(typeof(*os), os_spare7) == 0);
1850         BUILD_BUG_ON(offsetof(typeof(*os), os_spare8) == 0);
1851         BUILD_BUG_ON(offsetof(typeof(*os), os_spare9) == 0);
1852 }
1853
1854 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1855 {
1856         lustre_swab_ost_id(&ioo->ioo_oid);
1857         __swab32s(&ioo->ioo_max_brw);
1858         __swab32s(&ioo->ioo_bufcnt);
1859 }
1860
1861 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1862 {
1863         __swab64s(&nbr->rnb_offset);
1864         __swab32s(&nbr->rnb_len);
1865         __swab32s(&nbr->rnb_flags);
1866 }
1867
1868 void lustre_swab_ost_body(struct ost_body *b)
1869 {
1870         lustre_swab_obdo(&b->oa);
1871 }
1872
1873 void lustre_swab_ost_last_id(u64 *id)
1874 {
1875         __swab64s(id);
1876 }
1877
1878 void lustre_swab_generic_32s(__u32 *val)
1879 {
1880         __swab32s(val);
1881 }
1882
1883 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1884 {
1885         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1886         __swab64s(&desc->gl_flags);
1887         __swab64s(&desc->gl_ver);
1888         __swab64s(&desc->gl_hardlimit);
1889         __swab64s(&desc->gl_softlimit);
1890         __swab64s(&desc->gl_time);
1891         BUILD_BUG_ON(offsetof(typeof(*desc), gl_pad2) == 0);
1892 }
1893 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1894
1895 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1896 {
1897         __swab32s(&desc->lgbd_status);
1898         __swab32s(&desc->lgbd_timeout);
1899         BUILD_BUG_ON(offsetof(typeof(*desc), lgbd_padding) == 0);
1900 }
1901 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1902
1903 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1904 {
1905         __swab64s(&lvb->lvb_size);
1906         __swab64s(&lvb->lvb_mtime);
1907         __swab64s(&lvb->lvb_atime);
1908         __swab64s(&lvb->lvb_ctime);
1909         __swab64s(&lvb->lvb_blocks);
1910 }
1911 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1912
1913 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1914 {
1915         __swab64s(&lvb->lvb_size);
1916         __swab64s(&lvb->lvb_mtime);
1917         __swab64s(&lvb->lvb_atime);
1918         __swab64s(&lvb->lvb_ctime);
1919         __swab64s(&lvb->lvb_blocks);
1920         __swab32s(&lvb->lvb_mtime_ns);
1921         __swab32s(&lvb->lvb_atime_ns);
1922         __swab32s(&lvb->lvb_ctime_ns);
1923         __swab32s(&lvb->lvb_padding);
1924 }
1925 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1926
1927 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1928 {
1929         __swab64s(&lvb->lvb_flags);
1930         __swab64s(&lvb->lvb_id_may_rel);
1931         __swab64s(&lvb->lvb_id_rel);
1932         __swab64s(&lvb->lvb_id_qunit);
1933         __swab64s(&lvb->lvb_pad1);
1934 }
1935 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1936
1937 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1938 {
1939         __swab32s(&lvb->lvb_status);
1940         __swab32s(&lvb->lvb_index);
1941         BUILD_BUG_ON(offsetof(typeof(*lvb), lvb_padding) == 0);
1942 }
1943 EXPORT_SYMBOL(lustre_swab_barrier_lvb);
1944
1945 void lustre_swab_mdt_body(struct mdt_body *b)
1946 {
1947         lustre_swab_lu_fid(&b->mbo_fid1);
1948         lustre_swab_lu_fid(&b->mbo_fid2);
1949         /* handle is opaque */
1950         __swab64s(&b->mbo_valid);
1951         __swab64s(&b->mbo_size);
1952         __swab64s(&b->mbo_mtime);
1953         __swab64s(&b->mbo_atime);
1954         __swab64s(&b->mbo_ctime);
1955         __swab64s(&b->mbo_blocks);
1956         __swab64s(&b->mbo_version);
1957         __swab64s(&b->mbo_t_state);
1958         __swab32s(&b->mbo_fsuid);
1959         __swab32s(&b->mbo_fsgid);
1960         __swab32s(&b->mbo_capability);
1961         __swab32s(&b->mbo_mode);
1962         __swab32s(&b->mbo_uid);
1963         __swab32s(&b->mbo_gid);
1964         __swab32s(&b->mbo_flags);
1965         __swab32s(&b->mbo_rdev);
1966         __swab32s(&b->mbo_nlink);
1967         __swab32s(&b->mbo_layout_gen);
1968         __swab32s(&b->mbo_suppgid);
1969         __swab32s(&b->mbo_eadatasize);
1970         __swab32s(&b->mbo_aclsize);
1971         __swab32s(&b->mbo_max_mdsize);
1972         BUILD_BUG_ON(offsetof(typeof(*b), mbo_unused3) == 0);
1973         __swab32s(&b->mbo_uid_h);
1974         __swab32s(&b->mbo_gid_h);
1975         __swab32s(&b->mbo_projid);
1976         __swab64s(&b->mbo_dom_size);
1977         __swab64s(&b->mbo_dom_blocks);
1978         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_8) == 0);
1979         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_9) == 0);
1980         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_10) == 0);
1981 }
1982
1983 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1984 {
1985         /* mio_open_handle is opaque */
1986         BUILD_BUG_ON(offsetof(typeof(*b), mio_unused1) == 0);
1987         BUILD_BUG_ON(offsetof(typeof(*b), mio_unused2) == 0);
1988         BUILD_BUG_ON(offsetof(typeof(*b), mio_padding) == 0);
1989 }
1990
1991 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1992 {
1993         int i;
1994
1995         __swab32s(&mti->mti_lustre_ver);
1996         __swab32s(&mti->mti_stripe_index);
1997         __swab32s(&mti->mti_config_ver);
1998         __swab32s(&mti->mti_flags);
1999         __swab32s(&mti->mti_instance);
2000         __swab32s(&mti->mti_nid_count);
2001         BUILD_BUG_ON(sizeof(lnet_nid_t) != sizeof(__u64));
2002         for (i = 0; i < MTI_NIDS_MAX; i++)
2003                 __swab64s(&mti->mti_nids[i]);
2004 }
2005
2006 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
2007 {
2008         __u8 i;
2009
2010         __swab64s(&entry->mne_version);
2011         __swab32s(&entry->mne_instance);
2012         __swab32s(&entry->mne_index);
2013         __swab32s(&entry->mne_length);
2014
2015         /* mne_nid_(count|type) must be one byte size because we're gonna
2016          * access it w/o swapping. */
2017         BUILD_BUG_ON(sizeof(entry->mne_nid_count) != sizeof(__u8));
2018         BUILD_BUG_ON(sizeof(entry->mne_nid_type) != sizeof(__u8));
2019
2020         /* remove this assertion if ipv6 is supported. */
2021         LASSERT(entry->mne_nid_type == 0);
2022         for (i = 0; i < entry->mne_nid_count; i++) {
2023                 BUILD_BUG_ON(sizeof(lnet_nid_t) != sizeof(__u64));
2024                 __swab64s(&entry->u.nids[i]);
2025         }
2026 }
2027 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
2028
2029 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
2030 {
2031         __swab64s(&body->mcb_offset);
2032         __swab32s(&body->mcb_units);
2033         __swab16s(&body->mcb_type);
2034 }
2035
2036 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
2037 {
2038         __swab64s(&body->mcr_offset);
2039         __swab64s(&body->mcr_size);
2040 }
2041
2042 static void lustre_swab_obd_dqinfo(struct obd_dqinfo *i)
2043 {
2044         __swab64s(&i->dqi_bgrace);
2045         __swab64s(&i->dqi_igrace);
2046         __swab32s(&i->dqi_flags);
2047         __swab32s(&i->dqi_valid);
2048 }
2049
2050 static void lustre_swab_obd_dqblk(struct obd_dqblk *b)
2051 {
2052         __swab64s(&b->dqb_ihardlimit);
2053         __swab64s(&b->dqb_isoftlimit);
2054         __swab64s(&b->dqb_curinodes);
2055         __swab64s(&b->dqb_bhardlimit);
2056         __swab64s(&b->dqb_bsoftlimit);
2057         __swab64s(&b->dqb_curspace);
2058         __swab64s(&b->dqb_btime);
2059         __swab64s(&b->dqb_itime);
2060         __swab32s(&b->dqb_valid);
2061         BUILD_BUG_ON(offsetof(typeof(*b), dqb_padding) == 0);
2062 }
2063
2064 void lustre_swab_obd_quotactl(struct obd_quotactl *q)
2065 {
2066         __swab32s(&q->qc_cmd);
2067         __swab32s(&q->qc_type);
2068         __swab32s(&q->qc_id);
2069         __swab32s(&q->qc_stat);
2070         lustre_swab_obd_dqinfo(&q->qc_dqinfo);
2071         lustre_swab_obd_dqblk(&q->qc_dqblk);
2072 }
2073
2074 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2075 {
2076         lustre_swab_lu_fid(&gf->gf_fid);
2077         __swab64s(&gf->gf_recno);
2078         __swab32s(&gf->gf_linkno);
2079         __swab32s(&gf->gf_pathlen);
2080 }
2081 EXPORT_SYMBOL(lustre_swab_fid2path);
2082
2083 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
2084 {
2085         __swab64s(&fm_extent->fe_logical);
2086         __swab64s(&fm_extent->fe_physical);
2087         __swab64s(&fm_extent->fe_length);
2088         __swab32s(&fm_extent->fe_flags);
2089         __swab32s(&fm_extent->fe_device);
2090 }
2091
2092 static void lustre_swab_fiemap_hdr(struct fiemap *fiemap)
2093 {
2094         __swab64s(&fiemap->fm_start);
2095         __swab64s(&fiemap->fm_length);
2096         __swab32s(&fiemap->fm_flags);
2097         __swab32s(&fiemap->fm_mapped_extents);
2098         __swab32s(&fiemap->fm_extent_count);
2099         __swab32s(&fiemap->fm_reserved);
2100 }
2101
2102 void lustre_swab_fiemap(struct fiemap *fiemap)
2103 {
2104         __u32 i;
2105
2106         lustre_swab_fiemap_hdr(fiemap);
2107
2108         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2109                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2110 }
2111
2112 void lustre_swab_fiemap_info_key(struct ll_fiemap_info_key *fiemap_info)
2113 {
2114         lustre_swab_obdo(&fiemap_info->lfik_oa);
2115         lustre_swab_fiemap_hdr(&fiemap_info->lfik_fiemap);
2116 }
2117
2118 void lustre_swab_idx_info(struct idx_info *ii)
2119 {
2120         __swab32s(&ii->ii_magic);
2121         __swab32s(&ii->ii_flags);
2122         __swab16s(&ii->ii_count);
2123         __swab32s(&ii->ii_attrs);
2124         lustre_swab_lu_fid(&ii->ii_fid);
2125         __swab64s(&ii->ii_version);
2126         __swab64s(&ii->ii_hash_start);
2127         __swab64s(&ii->ii_hash_end);
2128         __swab16s(&ii->ii_keysize);
2129         __swab16s(&ii->ii_recsize);
2130 }
2131
2132 void lustre_swab_lip_header(struct lu_idxpage *lip)
2133 {
2134         /* swab header */
2135         __swab32s(&lip->lip_magic);
2136         __swab16s(&lip->lip_flags);
2137         __swab16s(&lip->lip_nr);
2138 }
2139 EXPORT_SYMBOL(lustre_swab_lip_header);
2140
2141 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2142 {
2143         __swab32s(&rr->rr_opcode);
2144         __swab32s(&rr->rr_cap);
2145         __swab32s(&rr->rr_fsuid);
2146         /* rr_fsuid_h is unused */
2147         __swab32s(&rr->rr_fsgid);
2148         /* rr_fsgid_h is unused */
2149         __swab32s(&rr->rr_suppgid1);
2150         /* rr_suppgid1_h is unused */
2151         __swab32s(&rr->rr_suppgid2);
2152         /* rr_suppgid2_h is unused */
2153         lustre_swab_lu_fid(&rr->rr_fid1);
2154         lustre_swab_lu_fid(&rr->rr_fid2);
2155         __swab64s(&rr->rr_mtime);
2156         __swab64s(&rr->rr_atime);
2157         __swab64s(&rr->rr_ctime);
2158         __swab64s(&rr->rr_size);
2159         __swab64s(&rr->rr_blocks);
2160         __swab32s(&rr->rr_bias);
2161         __swab32s(&rr->rr_mode);
2162         __swab32s(&rr->rr_flags);
2163         __swab32s(&rr->rr_flags_h);
2164         __swab32s(&rr->rr_umask);
2165         __swab16s(&rr->rr_mirror_id);
2166
2167         BUILD_BUG_ON(offsetof(typeof(*rr), rr_padding_4) == 0);
2168 };
2169
2170 void lustre_swab_lov_desc(struct lov_desc *ld)
2171 {
2172         __swab32s(&ld->ld_tgt_count);
2173         __swab32s(&ld->ld_active_tgt_count);
2174         __swab32s(&ld->ld_default_stripe_count);
2175         __swab32s(&ld->ld_pattern);
2176         __swab64s(&ld->ld_default_stripe_size);
2177         __swab64s(&ld->ld_default_stripe_offset);
2178         __swab32s(&ld->ld_qos_maxage);
2179         /* uuid endian insensitive */
2180 }
2181 EXPORT_SYMBOL(lustre_swab_lov_desc);
2182
2183 void lustre_swab_lmv_desc(struct lmv_desc *ld)
2184 {
2185         __swab32s(&ld->ld_tgt_count);
2186         __swab32s(&ld->ld_active_tgt_count);
2187         __swab32s(&ld->ld_default_stripe_count);
2188         __swab32s(&ld->ld_pattern);
2189         __swab64s(&ld->ld_default_hash_size);
2190         __swab32s(&ld->ld_qos_maxage);
2191         /* uuid endian insensitive */
2192 }
2193
2194 /* This structure is always in little-endian */
2195 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2196 {
2197         int i;
2198
2199         __swab32s(&lmm1->lmv_magic);
2200         __swab32s(&lmm1->lmv_stripe_count);
2201         __swab32s(&lmm1->lmv_master_mdt_index);
2202         __swab32s(&lmm1->lmv_hash_type);
2203         __swab32s(&lmm1->lmv_layout_version);
2204         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2205                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2206 }
2207
2208 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2209 {
2210         switch (lmm->lmv_magic) {
2211         case LMV_MAGIC_V1:
2212                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2213                 break;
2214         default:
2215                 break;
2216         }
2217 }
2218 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2219
2220 void lustre_swab_lmv_user_md_objects(struct lmv_user_mds_data *lmd,
2221                                      int stripe_count)
2222 {
2223         int i;
2224
2225         for (i = 0; i < stripe_count; i++)
2226                 __swab32s(&(lmd[i].lum_mds));
2227 }
2228 EXPORT_SYMBOL(lustre_swab_lmv_user_md_objects);
2229
2230
2231 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2232 {
2233         __u32 count;
2234
2235         if (lum->lum_magic == LMV_MAGIC_FOREIGN) {
2236                 __swab32s(&lum->lum_magic);
2237                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_length);
2238                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_type);
2239                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_flags);
2240                 return;
2241         }
2242
2243         count = lum->lum_stripe_count;
2244         __swab32s(&lum->lum_magic);
2245         __swab32s(&lum->lum_stripe_count);
2246         __swab32s(&lum->lum_stripe_offset);
2247         __swab32s(&lum->lum_hash_type);
2248         __swab32s(&lum->lum_type);
2249         BUILD_BUG_ON(offsetof(typeof(*lum), lum_padding1) == 0);
2250         switch (lum->lum_magic) {
2251         case LMV_USER_MAGIC_SPECIFIC:
2252                 count = lum->lum_stripe_count;
2253                 /* fallthrough */
2254         case __swab32(LMV_USER_MAGIC_SPECIFIC):
2255                 lustre_swab_lmv_user_md_objects(lum->lum_objects, count);
2256                 break;
2257         default:
2258                 break;
2259         }
2260 }
2261 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2262
2263 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2264                               const char *msg)
2265 {
2266         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2267         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2268         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2269         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2270         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2271         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2272         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2273         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2274                lum->lmm_stripe_offset);
2275         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2276                 struct lov_user_md_v3 *v3 = (void *)lum;
2277                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2278         }
2279         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2280                 struct lov_user_md_v3 *v3 = (void *)lum;
2281                 int i;
2282
2283                 if (v3->lmm_pool_name[0] != '\0')
2284                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2285
2286                 CDEBUG(lvl, "\ttarget list:\n");
2287                 for (i = 0; i < v3->lmm_stripe_count; i++)
2288                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2289         }
2290 }
2291
2292 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2293                           const char *msg)
2294 {
2295         struct lov_comp_md_v1   *comp_v1;
2296         int                      i;
2297
2298         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2299                 return;
2300
2301         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2302             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2303                 lustre_print_v1v3(lvl, lum, msg);
2304                 return;
2305         }
2306
2307         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2308                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2309                 return;
2310         }
2311
2312         comp_v1 = (struct lov_comp_md_v1 *)lum;
2313         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2314         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2315         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2316         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2317         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2318         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2319         CDEBUG(lvl, "\tlcm_mirror_count: %#x\n\n", comp_v1->lcm_mirror_count);
2320
2321         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2322                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2323                 struct lov_user_md *v1;
2324
2325                 CDEBUG(lvl, "\tentry %d:\n", i);
2326                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2327                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2328                 if (ent->lcme_flags & LCME_FL_NOSYNC)
2329                         CDEBUG(lvl, "\tlcme_timestamp: %llu\n",
2330                                         ent->lcme_timestamp);
2331                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2332                        ent->lcme_extent.e_start);
2333                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2334                        ent->lcme_extent.e_end);
2335                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2336                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2337
2338                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2339                                 comp_v1->lcm_entries[i].lcme_offset);
2340                 lustre_print_v1v3(lvl, v1, msg);
2341         }
2342 }
2343 EXPORT_SYMBOL(lustre_print_user_md);
2344
2345 static void lustre_swab_lmm_oi(struct ost_id *oi)
2346 {
2347         __swab64s(&oi->oi.oi_id);
2348         __swab64s(&oi->oi.oi_seq);
2349 }
2350
2351 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2352 {
2353         ENTRY;
2354         __swab32s(&lum->lmm_magic);
2355         __swab32s(&lum->lmm_pattern);
2356         lustre_swab_lmm_oi(&lum->lmm_oi);
2357         __swab32s(&lum->lmm_stripe_size);
2358         __swab16s(&lum->lmm_stripe_count);
2359         __swab16s(&lum->lmm_stripe_offset);
2360         EXIT;
2361 }
2362
2363 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2364 {
2365         ENTRY;
2366         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2367         lustre_swab_lov_user_md_common(lum);
2368         EXIT;
2369 }
2370 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2371
2372 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2373 {
2374         ENTRY;
2375         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2376         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2377         /* lmm_pool_name nothing to do with char */
2378         EXIT;
2379 }
2380 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2381
2382 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2383 {
2384         struct lov_comp_md_entry_v1     *ent;
2385         struct lov_user_md_v1   *v1;
2386         struct lov_user_md_v3   *v3;
2387         int     i;
2388         bool    cpu_endian;
2389         __u32   off, size;
2390         __u16   ent_count, stripe_count;
2391         ENTRY;
2392
2393         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2394         ent_count = lum->lcm_entry_count;
2395         if (!cpu_endian)
2396                 __swab16s(&ent_count);
2397
2398         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2399         __swab32s(&lum->lcm_magic);
2400         __swab32s(&lum->lcm_size);
2401         __swab32s(&lum->lcm_layout_gen);
2402         __swab16s(&lum->lcm_flags);
2403         __swab16s(&lum->lcm_entry_count);
2404         __swab16s(&lum->lcm_mirror_count);
2405         BUILD_BUG_ON(offsetof(typeof(*lum), lcm_padding1) == 0);
2406         BUILD_BUG_ON(offsetof(typeof(*lum), lcm_padding2) == 0);
2407
2408         for (i = 0; i < ent_count; i++) {
2409                 ent = &lum->lcm_entries[i];
2410                 off = ent->lcme_offset;
2411                 size = ent->lcme_size;
2412
2413                 if (!cpu_endian) {
2414                         __swab32s(&off);
2415                         __swab32s(&size);
2416                 }
2417                 __swab32s(&ent->lcme_id);
2418                 __swab32s(&ent->lcme_flags);
2419                 __swab64s(&ent->lcme_timestamp);
2420                 __swab64s(&ent->lcme_extent.e_start);
2421                 __swab64s(&ent->lcme_extent.e_end);
2422                 __swab32s(&ent->lcme_offset);
2423                 __swab32s(&ent->lcme_size);
2424                 __swab32s(&ent->lcme_layout_gen);
2425                 BUILD_BUG_ON(offsetof(typeof(*ent), lcme_padding_1) == 0);
2426
2427                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2428                 stripe_count = v1->lmm_stripe_count;
2429                 if (!cpu_endian)
2430                         __swab16s(&stripe_count);
2431
2432                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2433                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2434                         lustre_swab_lov_user_md_v1(v1);
2435                         if (size > sizeof(*v1))
2436                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2437                                                                 stripe_count);
2438                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2439                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2440                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2441                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2442                         v3 = (struct lov_user_md_v3 *)v1;
2443                         lustre_swab_lov_user_md_v3(v3);
2444                         if (size > sizeof(*v3))
2445                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2446                                                                 stripe_count);
2447                 } else {
2448                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2449                 }
2450         }
2451 }
2452 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2453
2454 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2455                                      int stripe_count)
2456 {
2457         int i;
2458
2459         ENTRY;
2460         for (i = 0; i < stripe_count; i++) {
2461                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2462                 __swab32s(&(lod[i].l_ost_gen));
2463                 __swab32s(&(lod[i].l_ost_idx));
2464         }
2465         EXIT;
2466 }
2467 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2468
2469 void lustre_swab_lov_user_md(struct lov_user_md *lum, size_t size)
2470 {
2471         struct lov_user_md_v1 *v1;
2472         struct lov_user_md_v3 *v3;
2473         struct lov_foreign_md *lfm;
2474         __u16 stripe_count;
2475         ENTRY;
2476
2477         CDEBUG(D_IOCTL, "swabbing lov_user_md\n");
2478         switch (lum->lmm_magic) {
2479         case __swab32(LOV_MAGIC_V1):
2480         case LOV_USER_MAGIC_V1:
2481         {
2482                 v1 = (struct lov_user_md_v1 *)lum;
2483                 stripe_count = v1->lmm_stripe_count;
2484
2485                 if (lum->lmm_magic != LOV_USER_MAGIC_V1)
2486                         __swab16s(&stripe_count);
2487
2488                 lustre_swab_lov_user_md_v1(v1);
2489                 if (size > sizeof(*v1))
2490                         lustre_swab_lov_user_md_objects(v1->lmm_objects,
2491                                                         stripe_count);
2492
2493                 break;
2494         }
2495         case __swab32(LOV_MAGIC_V3):
2496         case LOV_USER_MAGIC_V3:
2497         {
2498                 v3 = (struct lov_user_md_v3 *)lum;
2499                 stripe_count = v3->lmm_stripe_count;
2500
2501                 if (lum->lmm_magic != LOV_USER_MAGIC_V3)
2502                         __swab16s(&stripe_count);
2503
2504                 lustre_swab_lov_user_md_v3(v3);
2505                 if (size > sizeof(*v3))
2506                         lustre_swab_lov_user_md_objects(v3->lmm_objects,
2507                                                         stripe_count);
2508                 break;
2509         }
2510         case __swab32(LOV_USER_MAGIC_SPECIFIC):
2511         case LOV_USER_MAGIC_SPECIFIC:
2512         {
2513                 v3 = (struct lov_user_md_v3 *)lum;
2514                 stripe_count = v3->lmm_stripe_count;
2515
2516                 if (lum->lmm_magic != LOV_USER_MAGIC_SPECIFIC)
2517                         __swab16s(&stripe_count);
2518
2519                 lustre_swab_lov_user_md_v3(v3);
2520                 lustre_swab_lov_user_md_objects(v3->lmm_objects, stripe_count);
2521                 break;
2522         }
2523         case __swab32(LOV_MAGIC_COMP_V1):
2524         case LOV_USER_MAGIC_COMP_V1:
2525                 lustre_swab_lov_comp_md_v1((struct lov_comp_md_v1 *)lum);
2526                 break;
2527         case __swab32(LOV_MAGIC_FOREIGN):
2528         case LOV_USER_MAGIC_FOREIGN:
2529         {
2530                 lfm = (struct lov_foreign_md *)lum;
2531                 __swab32s(&lfm->lfm_magic);
2532                 __swab32s(&lfm->lfm_length);
2533                 __swab32s(&lfm->lfm_type);
2534                 __swab32s(&lfm->lfm_flags);
2535                 break;
2536         }
2537         default:
2538                 CDEBUG(D_IOCTL, "Invalid LOV magic %08x\n", lum->lmm_magic);
2539         }
2540 }
2541 EXPORT_SYMBOL(lustre_swab_lov_user_md);
2542
2543 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2544 {
2545         ENTRY;
2546         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2547         __swab32s(&lmm->lmm_magic);
2548         __swab32s(&lmm->lmm_pattern);
2549         lustre_swab_lmm_oi(&lmm->lmm_oi);
2550         __swab32s(&lmm->lmm_stripe_size);
2551         __swab16s(&lmm->lmm_stripe_count);
2552         __swab16s(&lmm->lmm_layout_gen);
2553         EXIT;
2554 }
2555 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2556
2557 void lustre_swab_ldlm_res_id(struct ldlm_res_id *id)
2558 {
2559         int i;
2560
2561         for (i = 0; i < RES_NAME_SIZE; i++)
2562                 __swab64s(&id->name[i]);
2563 }
2564
2565 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2566 {
2567         /* the lock data is a union and the first two fields are always an
2568          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2569          * data the same way.
2570          */
2571         __swab64s(&d->l_extent.start);
2572         __swab64s(&d->l_extent.end);
2573         __swab64s(&d->l_extent.gid);
2574         __swab64s(&d->l_flock.lfw_owner);
2575         __swab32s(&d->l_flock.lfw_pid);
2576 }
2577
2578 void lustre_swab_ldlm_intent(struct ldlm_intent *i)
2579 {
2580         __swab64s(&i->opc);
2581 }
2582
2583 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2584 {
2585         __swab32s(&r->lr_type);
2586         BUILD_BUG_ON(offsetof(typeof(*r), lr_pad) == 0);
2587         lustre_swab_ldlm_res_id(&r->lr_name);
2588 }
2589
2590 void lustre_swab_ldlm_lock_desc(struct ldlm_lock_desc *l)
2591 {
2592         lustre_swab_ldlm_resource_desc(&l->l_resource);
2593         __swab32s(&l->l_req_mode);
2594         __swab32s(&l->l_granted_mode);
2595         lustre_swab_ldlm_policy_data(&l->l_policy_data);
2596 }
2597
2598 void lustre_swab_ldlm_request(struct ldlm_request *rq)
2599 {
2600         __swab32s(&rq->lock_flags);
2601         lustre_swab_ldlm_lock_desc(&rq->lock_desc);
2602         __swab32s(&rq->lock_count);
2603         /* lock_handle[] opaque */
2604 }
2605
2606 void lustre_swab_ldlm_reply(struct ldlm_reply *r)
2607 {
2608         __swab32s(&r->lock_flags);
2609         BUILD_BUG_ON(offsetof(typeof(*r), lock_padding) == 0);
2610         lustre_swab_ldlm_lock_desc(&r->lock_desc);
2611         /* lock_handle opaque */
2612         __swab64s(&r->lock_policy_res1);
2613         __swab64s(&r->lock_policy_res2);
2614 }
2615
2616 void lustre_swab_quota_body(struct quota_body *b)
2617 {
2618         lustre_swab_lu_fid(&b->qb_fid);
2619         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2620         __swab32s(&b->qb_flags);
2621         __swab64s(&b->qb_count);
2622         __swab64s(&b->qb_usage);
2623         __swab64s(&b->qb_slv_ver);
2624 }
2625
2626 /* Dump functions */
2627 void dump_ioo(struct obd_ioobj *ioo)
2628 {
2629         CDEBUG(D_RPCTRACE,
2630                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2631                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2632                ioo->ioo_bufcnt);
2633 }
2634
2635 void dump_rniobuf(struct niobuf_remote *nb)
2636 {
2637         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2638                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2639 }
2640
2641 void dump_obdo(struct obdo *oa)
2642 {
2643         u64 valid = oa->o_valid;
2644
2645         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2646         if (valid & OBD_MD_FLID)
2647                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2648         if (valid & OBD_MD_FLFID)
2649                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2650                        oa->o_parent_seq);
2651         if (valid & OBD_MD_FLSIZE)
2652                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2653         if (valid & OBD_MD_FLMTIME)
2654                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2655         if (valid & OBD_MD_FLATIME)
2656                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2657         if (valid & OBD_MD_FLCTIME)
2658                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2659         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2660                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2661         if (valid & OBD_MD_FLGRANT)
2662                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2663         if (valid & OBD_MD_FLBLKSZ)
2664                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2665         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2666                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2667                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2668                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2669         if (valid & OBD_MD_FLUID)
2670                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2671         if (valid & OBD_MD_FLUID)
2672                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2673         if (valid & OBD_MD_FLGID)
2674                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2675         if (valid & OBD_MD_FLGID)
2676                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2677         if (valid & OBD_MD_FLFLAGS)
2678                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2679         if (valid & OBD_MD_FLNLINK)
2680                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2681         else if (valid & OBD_MD_FLCKSUM)
2682                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2683                        oa->o_nlink);
2684         if (valid & OBD_MD_FLPARENT)
2685                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2686                        oa->o_parent_oid);
2687         if (valid & OBD_MD_FLFID) {
2688                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2689                        oa->o_stripe_idx);
2690                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2691                        oa->o_parent_ver);
2692         }
2693         if (valid & OBD_MD_FLHANDLE)
2694                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2695                        oa->o_handle.cookie);
2696 }
2697
2698 void dump_ost_body(struct ost_body *ob)
2699 {
2700         dump_obdo(&ob->oa);
2701 }
2702
2703 void dump_rcs(__u32 *rc)
2704 {
2705         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2706 }
2707
2708 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2709 {
2710         LASSERT(req->rq_reqmsg);
2711
2712         switch (req->rq_reqmsg->lm_magic) {
2713         case LUSTRE_MSG_MAGIC_V2:
2714                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2715         default:
2716                 CERROR("bad lustre msg magic: %#08X\n",
2717                        req->rq_reqmsg->lm_magic);
2718         }
2719         return 0;
2720 }
2721
2722 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2723 {
2724         if (unlikely(!req->rq_repmsg))
2725                 return 0;
2726
2727         switch (req->rq_repmsg->lm_magic) {
2728         case LUSTRE_MSG_MAGIC_V2:
2729                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2730         default:
2731                 /* uninitialized yet */
2732                 return 0;
2733         }
2734 }
2735
2736 void _debug_req(struct ptlrpc_request *req,
2737                 struct libcfs_debug_msg_data *msgdata, const char *fmt, ...)
2738 {
2739         bool req_ok = req->rq_reqmsg != NULL;
2740         bool rep_ok = false;
2741         lnet_nid_t nid = LNET_NID_ANY;
2742         struct va_format vaf;
2743         va_list args;
2744         int rep_flags = -1;
2745         int rep_status = -1;
2746
2747         spin_lock(&req->rq_early_free_lock);
2748         if (req->rq_repmsg)
2749                 rep_ok = true;
2750
2751         if (ptlrpc_req_need_swab(req)) {
2752                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2753                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2754         }
2755
2756         if (rep_ok) {
2757                 rep_flags = lustre_msg_get_flags(req->rq_repmsg);
2758                 rep_status = lustre_msg_get_status(req->rq_repmsg);
2759         }
2760         spin_unlock(&req->rq_early_free_lock);
2761
2762         if (req->rq_import && req->rq_import->imp_connection)
2763                 nid = req->rq_import->imp_connection->c_peer.nid;
2764         else if (req->rq_export && req->rq_export->exp_connection)
2765                 nid = req->rq_export->exp_connection->c_peer.nid;
2766
2767         va_start(args, fmt);
2768         vaf.fmt = fmt;
2769         vaf.va = &args;
2770         libcfs_debug_msg(msgdata,
2771                          "%pV req@%p x%llu/t%lld(%lld) o%d->%s@%s:%d/%d lens %d/%d e %d to %lld dl %lld ref %d fl " REQ_FLAGS_FMT "/%x/%x rc %d/%d job:'%s'\n",
2772                          &vaf,
2773                          req, req->rq_xid, req->rq_transno,
2774                          req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2775                          req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2776                          req->rq_import ?
2777                          req->rq_import->imp_obd->obd_name :
2778                          req->rq_export ?
2779                          req->rq_export->exp_client_uuid.uuid :
2780                          "<?>",
2781                          libcfs_nid2str(nid),
2782                          req->rq_request_portal, req->rq_reply_portal,
2783                          req->rq_reqlen, req->rq_replen,
2784                          req->rq_early_count, (s64)req->rq_timedout,
2785                          (s64)req->rq_deadline,
2786                          atomic_read(&req->rq_refcount),
2787                          DEBUG_REQ_FLAGS(req),
2788                          req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2789                          rep_flags, req->rq_status, rep_status,
2790                          req_ok ? lustre_msg_get_jobid(req->rq_reqmsg) ?: ""
2791                                 : "");
2792         va_end(args);
2793 }
2794 EXPORT_SYMBOL(_debug_req);
2795
2796 void lustre_swab_lustre_capa(struct lustre_capa *c)
2797 {
2798         lustre_swab_lu_fid(&c->lc_fid);
2799         __swab64s(&c->lc_opc);
2800         __swab64s(&c->lc_uid);
2801         __swab64s(&c->lc_gid);
2802         __swab32s(&c->lc_flags);
2803         __swab32s(&c->lc_keyid);
2804         __swab32s(&c->lc_timeout);
2805         __swab32s(&c->lc_expiry);
2806 }
2807
2808 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2809 {
2810         __swab64s(&k->lk_seq);
2811         __swab32s(&k->lk_keyid);
2812         BUILD_BUG_ON(offsetof(typeof(*k), lk_padding) == 0);
2813 }
2814
2815 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2816 {
2817         __swab32s(&state->hus_states);
2818         __swab32s(&state->hus_archive_id);
2819 }
2820
2821 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2822 {
2823         __swab32s(&hss->hss_valid);
2824         __swab64s(&hss->hss_setmask);
2825         __swab64s(&hss->hss_clearmask);
2826         __swab32s(&hss->hss_archive_id);
2827 }
2828
2829 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2830 {
2831         __swab64s(&extent->offset);
2832         __swab64s(&extent->length);
2833 }
2834
2835 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2836 {
2837         __swab32s(&action->hca_state);
2838         __swab32s(&action->hca_action);
2839         lustre_swab_hsm_extent(&action->hca_location);
2840 }
2841
2842 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2843 {
2844         lustre_swab_lu_fid(&hui->hui_fid);
2845         lustre_swab_hsm_extent(&hui->hui_extent);
2846 }
2847
2848 void lustre_swab_lu_extent(struct lu_extent *le)
2849 {
2850         __swab64s(&le->e_start);
2851         __swab64s(&le->e_end);
2852 }
2853
2854 void lustre_swab_layout_intent(struct layout_intent *li)
2855 {
2856         __swab32s(&li->li_opc);
2857         __swab32s(&li->li_flags);
2858         lustre_swab_lu_extent(&li->li_extent);
2859 }
2860
2861 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2862 {
2863         lustre_swab_lu_fid(&hpk->hpk_fid);
2864         __swab64s(&hpk->hpk_cookie);
2865         __swab64s(&hpk->hpk_extent.offset);
2866         __swab64s(&hpk->hpk_extent.length);
2867         __swab16s(&hpk->hpk_flags);
2868         __swab16s(&hpk->hpk_errval);
2869 }
2870
2871 void lustre_swab_hsm_request(struct hsm_request *hr)
2872 {
2873         __swab32s(&hr->hr_action);
2874         __swab32s(&hr->hr_archive_id);
2875         __swab64s(&hr->hr_flags);
2876         __swab32s(&hr->hr_itemcount);
2877         __swab32s(&hr->hr_data_len);
2878 }
2879
2880 void lustre_swab_object_update(struct object_update *ou)
2881 {
2882         struct object_update_param *param;
2883         size_t  i;
2884
2885         __swab16s(&ou->ou_type);
2886         __swab16s(&ou->ou_params_count);
2887         __swab32s(&ou->ou_result_size);
2888         __swab32s(&ou->ou_flags);
2889         __swab32s(&ou->ou_padding1);
2890         __swab64s(&ou->ou_batchid);
2891         lustre_swab_lu_fid(&ou->ou_fid);
2892         param = &ou->ou_params[0];
2893         for (i = 0; i < ou->ou_params_count; i++) {
2894                 __swab16s(&param->oup_len);
2895                 __swab16s(&param->oup_padding);
2896                 __swab32s(&param->oup_padding2);
2897                 param = (struct object_update_param *)((char *)param +
2898                          object_update_param_size(param));
2899         }
2900 }
2901
2902 void lustre_swab_object_update_request(struct object_update_request *our)
2903 {
2904         size_t i;
2905         __swab32s(&our->ourq_magic);
2906         __swab16s(&our->ourq_count);
2907         __swab16s(&our->ourq_padding);
2908         for (i = 0; i < our->ourq_count; i++) {
2909                 struct object_update *ou;
2910
2911                 ou = object_update_request_get(our, i, NULL);
2912                 if (ou == NULL)
2913                         return;
2914                 lustre_swab_object_update(ou);
2915         }
2916 }
2917
2918 void lustre_swab_object_update_result(struct object_update_result *our)
2919 {
2920         __swab32s(&our->our_rc);
2921         __swab16s(&our->our_datalen);
2922         __swab16s(&our->our_padding);
2923 }
2924
2925 void lustre_swab_object_update_reply(struct object_update_reply *our)
2926 {
2927         size_t i;
2928
2929         __swab32s(&our->ourp_magic);
2930         __swab16s(&our->ourp_count);
2931         __swab16s(&our->ourp_padding);
2932         for (i = 0; i < our->ourp_count; i++) {
2933                 struct object_update_result *ourp;
2934
2935                 __swab16s(&our->ourp_lens[i]);
2936                 ourp = object_update_result_get(our, i, NULL);
2937                 if (ourp == NULL)
2938                         return;
2939                 lustre_swab_object_update_result(ourp);
2940         }
2941 }
2942
2943 void lustre_swab_out_update_header(struct out_update_header *ouh)
2944 {
2945         __swab32s(&ouh->ouh_magic);
2946         __swab32s(&ouh->ouh_count);
2947         __swab32s(&ouh->ouh_inline_length);
2948         __swab32s(&ouh->ouh_reply_size);
2949 }
2950 EXPORT_SYMBOL(lustre_swab_out_update_header);
2951
2952 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2953 {
2954         __swab32s(&oub->oub_size);
2955         __swab32s(&oub->oub_padding);
2956 }
2957 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2958
2959 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2960 {
2961         __swab64s(&msl->msl_flags);
2962 }
2963
2964 void lustre_swab_close_data(struct close_data *cd)
2965 {
2966         lustre_swab_lu_fid(&cd->cd_fid);
2967         __swab64s(&cd->cd_data_version);
2968 }
2969
2970 void lustre_swab_close_data_resync_done(struct close_data_resync_done *resync)
2971 {
2972         int i;
2973
2974         __swab32s(&resync->resync_count);
2975         /* after swab, resync_count must in CPU endian */
2976         if (resync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
2977                 for (i = 0; i < resync->resync_count; i++)
2978                         __swab32s(&resync->resync_ids_inline[i]);
2979         }
2980 }
2981 EXPORT_SYMBOL(lustre_swab_close_data_resync_done);
2982
2983 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2984 {
2985         __swab32s(&lr->lr_event);
2986         __swab32s(&lr->lr_index);
2987         __swab32s(&lr->lr_flags);
2988         __swab32s(&lr->lr_valid);
2989         __swab32s(&lr->lr_speed);
2990         __swab16s(&lr->lr_version);
2991         __swab16s(&lr->lr_active);
2992         __swab16s(&lr->lr_param);
2993         __swab16s(&lr->lr_async_windows);
2994         __swab32s(&lr->lr_flags);
2995         lustre_swab_lu_fid(&lr->lr_fid);
2996         lustre_swab_lu_fid(&lr->lr_fid2);
2997         __swab32s(&lr->lr_comp_id);
2998         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_0) == 0);
2999         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_1) == 0);
3000         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_2) == 0);
3001         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_3) == 0);
3002 }
3003
3004 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
3005 {
3006         __swab32s(&lr->lr_status);
3007         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_1) == 0);
3008         __swab64s(&lr->lr_repaired);
3009 }
3010
3011 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
3012 {
3013         lustre_swab_lu_fid(&rec->lor_fid);
3014         __swab32s(&rec->lor_uid);
3015         __swab32s(&rec->lor_gid);
3016 }
3017
3018 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
3019 {
3020         lustre_swab_lu_fid(&ent->loe_key);
3021         lustre_swab_orphan_rec(&ent->loe_rec);
3022 }
3023 EXPORT_SYMBOL(lustre_swab_orphan_ent);
3024
3025 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
3026 {
3027         lustre_swab_lu_fid(&ent->loe_key);
3028         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
3029         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
3030         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding) == 0);
3031 }
3032 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
3033
3034 void lustre_swab_orphan_ent_v3(struct lu_orphan_ent_v3 *ent)
3035 {
3036         lustre_swab_lu_fid(&ent->loe_key);
3037         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
3038         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
3039         __swab32s(&ent->loe_rec.lor_layout_version);
3040         __swab32s(&ent->loe_rec.lor_range);
3041         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding_1) == 0);
3042         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding_2) == 0);
3043 }
3044 EXPORT_SYMBOL(lustre_swab_orphan_ent_v3);
3045
3046 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
3047 {
3048         __swab16s(&ladvise->lla_advice);
3049         __swab16s(&ladvise->lla_value1);
3050         __swab32s(&ladvise->lla_value2);
3051         __swab64s(&ladvise->lla_start);
3052         __swab64s(&ladvise->lla_end);
3053         __swab32s(&ladvise->lla_value3);
3054         __swab32s(&ladvise->lla_value4);
3055 }
3056 EXPORT_SYMBOL(lustre_swab_ladvise);
3057
3058 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
3059 {
3060         __swab32s(&ladvise_hdr->lah_magic);
3061         __swab32s(&ladvise_hdr->lah_count);
3062         __swab64s(&ladvise_hdr->lah_flags);
3063         __swab32s(&ladvise_hdr->lah_value1);
3064         __swab32s(&ladvise_hdr->lah_value2);
3065         __swab64s(&ladvise_hdr->lah_value3);
3066 }
3067 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);