lustre/ptlrpc/pack_generic.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/ptlrpc/pack_generic.c
  33  *
  34  * (Un)packing of OST requests
  35  *
  36  * Author: Peter J. Braam <braam@clusterfs.com>
  37  * Author: Phil Schwan <phil@clusterfs.com>
  38  * Author: Eric Barton <eeb@clusterfs.com>
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_RPC
  42
  43 #include <libcfs/libcfs.h>
  44
  45 #include <llog_swab.h>
  46 #include <lustre_net.h>
  47 #include <lustre_swab.h>
  48 #include <obd_cksum.h>
  49 #include <obd_class.h>
  50 #include <obd_support.h>
  51 #include <obj_update.h>
  52
  53 #include "ptlrpc_internal.h"
  54
  55 static inline __u32 lustre_msg_hdr_size_v2(__u32 count)
  56 {
  57         return cfs_size_round(offsetof(struct lustre_msg_v2,
  58                                        lm_buflens[count]));
  59 }
  60
  61 __u32 lustre_msg_hdr_size(__u32 magic, __u32 count)
  62 {
  63         switch (magic) {
  64         case LUSTRE_MSG_MAGIC_V2:
  65                 return lustre_msg_hdr_size_v2(count);
  66         default:
  67                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  68                 return 0;
  69         }
  70 }
  71
  72 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  73                             __u32 index)
  74 {
  75         if (inout)
  76                 lustre_set_req_swabbed(req, index);
  77         else
  78                 lustre_set_rep_swabbed(req, index);
  79 }
  80
  81 bool ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  82                           __u32 index)
  83 {
  84         if (inout)
  85                 return (ptlrpc_req_need_swab(req) &&
  86                         !lustre_req_swabbed(req, index));
  87
  88         return (ptlrpc_rep_need_swab(req) && !lustre_rep_swabbed(req, index));
  89 }
  90
  91 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  92                                               enum lustre_msg_version version)
  93 {
  94         enum lustre_msg_version ver = lustre_msg_get_version(msg);
  95
  96         return (ver & LUSTRE_VERSION_MASK) != version;
  97 }
  98
  99 int lustre_msg_check_version(struct lustre_msg *msg,
 100                              enum lustre_msg_version version)
 101 {
 102 #define LUSTRE_MSG_MAGIC_V1 0x0BD00BD0
 103         switch (msg->lm_magic) {
 104         case LUSTRE_MSG_MAGIC_V1:
 105                 CERROR("msg v1 not supported - please upgrade you system\n");
 106                 return -EINVAL;
 107         case LUSTRE_MSG_MAGIC_V2:
 108                 return lustre_msg_check_version_v2(msg, version);
 109         default:
 110                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 111                 return -EPROTO;
 112         }
 113 #undef LUSTRE_MSG_MAGIC_V1
 114 }
 115
 116 /* early reply size */
 117 __u32 lustre_msg_early_size()
 118 {
 119         static __u32 size;
 120         if (!size) {
 121                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 122                  * with the old client (< 2.3) which doesn't have pb_jobid
 123                  * in the ptlrpc_body.
 124                  *
 125                  * XXX Remove this whenever we dorp interoprability with such
 126                  *     client.
 127                  */
 128                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 129                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 130         }
 131         return size;
 132 }
 133 EXPORT_SYMBOL(lustre_msg_early_size);
 134
 135 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
 136 {
 137         __u32 size;
 138         int i;
 139
 140         size = lustre_msg_hdr_size_v2(count);
 141         for (i = 0; i < count; i++)
 142                 size += cfs_size_round(lengths[i]);
 143
 144         return size;
 145 }
 146 EXPORT_SYMBOL(lustre_msg_size_v2);
 147
 148 /* This returns the size of the buffer that is required to hold a lustre_msg
 149  * with the given sub-buffer lengths.
 150  * NOTE: this should only be used for NEW requests, and should always be
 151  *       in the form of a v2 request.  If this is a connection to a v1
 152  *       target then the first buffer will be stripped because the ptlrpc
 153  *       data is part of the lustre_msg_v1 header. b=14043 */
 154 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 155 {
 156         __u32 size[] = { sizeof(struct ptlrpc_body) };
 157
 158         if (!lens) {
 159                 LASSERT(count == 1);
 160                 lens = size;
 161         }
 162
 163         LASSERT(count > 0);
 164         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 165
 166         switch (magic) {
 167         case LUSTRE_MSG_MAGIC_V2:
 168                 return lustre_msg_size_v2(count, lens);
 169         default:
 170                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 171                 return 0;
 172         }
 173 }
 174
 175 /* This is used to determine the size of a buffer that was already packed
 176  * and will correctly handle the different message formats. */
 177 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 178 {
 179         switch (msg->lm_magic) {
 180         case LUSTRE_MSG_MAGIC_V2:
 181                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 182         default:
 183                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 184                 return 0;
 185         }
 186 }
 187 EXPORT_SYMBOL(lustre_packed_msg_size);
 188
 189 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 190                         char **bufs)
 191 {
 192         char *ptr;
 193         int i;
 194
 195         msg->lm_bufcount = count;
 196         /* XXX: lm_secflvr uninitialized here */
 197         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 198
 199         for (i = 0; i < count; i++)
 200                 msg->lm_buflens[i] = lens[i];
 201
 202         if (bufs == NULL)
 203                 return;
 204
 205         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 206         for (i = 0; i < count; i++) {
 207                 char *tmp = bufs[i];
 208
 209                 if (tmp)
 210                         memcpy(ptr, tmp, lens[i]);
 211                 ptr += cfs_size_round(lens[i]);
 212         }
 213 }
 214 EXPORT_SYMBOL(lustre_init_msg_v2);
 215
 216 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 217                                   int count, __u32 *lens, char **bufs)
 218 {
 219         int reqlen, rc;
 220
 221         reqlen = lustre_msg_size_v2(count, lens);
 222
 223         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 224         if (rc)
 225                 return rc;
 226
 227         req->rq_reqlen = reqlen;
 228
 229         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 230         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 231         return 0;
 232 }
 233
 234 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 235                         __u32 *lens, char **bufs)
 236 {
 237         __u32 size[] = { sizeof(struct ptlrpc_body) };
 238
 239         if (!lens) {
 240                 LASSERT(count == 1);
 241                 lens = size;
 242         }
 243
 244         LASSERT(count > 0);
 245         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 246
 247         /* only use new format, we don't need to be compatible with 1.4 */
 248         magic = LUSTRE_MSG_MAGIC_V2;
 249
 250         switch (magic) {
 251         case LUSTRE_MSG_MAGIC_V2:
 252                 return lustre_pack_request_v2(req, count, lens, bufs);
 253         default:
 254                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 255                 return -EINVAL;
 256         }
 257 }
 258
 259 #if RS_DEBUG
 260 struct list_head ptlrpc_rs_debug_lru =
 261         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 262 spinlock_t ptlrpc_rs_debug_lock;
 263
 264 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 265 do {                                                                    \
 266         spin_lock(&ptlrpc_rs_debug_lock);                               \
 267         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 268         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 269 } while (0)
 270
 271 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 272 do {                                                                    \
 273         spin_lock(&ptlrpc_rs_debug_lock);                               \
 274         list_del(&(rs)->rs_debug_list);                         \
 275         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 276 } while (0)
 277 #else
 278 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 279 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 280 #endif
 281
 282 struct ptlrpc_reply_state *
 283 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 284 {
 285         struct ptlrpc_reply_state *rs = NULL;
 286
 287         spin_lock(&svcpt->scp_rep_lock);
 288
 289         /* See if we have anything in a pool, and wait if nothing */
 290         while (list_empty(&svcpt->scp_rep_idle)) {
 291                 struct l_wait_info      lwi;
 292                 int                     rc;
 293
 294                 spin_unlock(&svcpt->scp_rep_lock);
 295                 /* If we cannot get anything for some long time, we better
 296                  * bail out instead of waiting infinitely */
 297                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 298                 rc = l_wait_event(svcpt->scp_rep_waitq,
 299                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 300                 if (rc != 0)
 301                         goto out;
 302                 spin_lock(&svcpt->scp_rep_lock);
 303         }
 304
 305         rs = list_entry(svcpt->scp_rep_idle.next,
 306                             struct ptlrpc_reply_state, rs_list);
 307         list_del(&rs->rs_list);
 308
 309         spin_unlock(&svcpt->scp_rep_lock);
 310
 311         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 312         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 313         rs->rs_svcpt = svcpt;
 314         rs->rs_prealloc = 1;
 315 out:
 316         return rs;
 317 }
 318
 319 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 320 {
 321         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 322
 323         spin_lock(&svcpt->scp_rep_lock);
 324         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 325         spin_unlock(&svcpt->scp_rep_lock);
 326         wake_up(&svcpt->scp_rep_waitq);
 327 }
 328
 329 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 330                          __u32 *lens, char **bufs, int flags)
 331 {
 332         struct ptlrpc_reply_state *rs;
 333         int                        msg_len, rc;
 334         ENTRY;
 335
 336         LASSERT(req->rq_reply_state == NULL);
 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
 414         bufcount = m->lm_bufcount;
 415         if (unlikely(n >= bufcount)) {
 416                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 417                        m, n, bufcount);
 418                 return NULL;
 419         }
 420
 421         buflen = m->lm_buflens[n];
 422         if (unlikely(buflen < min_size)) {
 423                 CERROR("msg %p buffer[%d] size %d too small "
 424                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 425                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 426                 return NULL;
 427         }
 428
 429         offset = lustre_msg_hdr_size_v2(bufcount);
 430         for (i = 0; i < n; i++)
 431                 offset += cfs_size_round(m->lm_buflens[i]);
 432
 433         return (char *)m + offset;
 434 }
 435
 436 void *lustre_msg_buf(struct lustre_msg *m, __u32 n, __u32 min_size)
 437 {
 438         switch (m->lm_magic) {
 439         case LUSTRE_MSG_MAGIC_V2:
 440                 return lustre_msg_buf_v2(m, n, min_size);
 441         default:
 442                 LASSERTF(0, "incorrect message magic: %08x (msg:%p)\n",
 443                          m->lm_magic, m);
 444                 return NULL;
 445         }
 446 }
 447 EXPORT_SYMBOL(lustre_msg_buf);
 448
 449 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 450                                 unsigned int newlen, int move_data)
 451 {
 452         char   *tail = NULL, *newpos;
 453         int     tail_len = 0, n;
 454
 455         LASSERT(msg);
 456         LASSERT(msg->lm_bufcount > segment);
 457         LASSERT(msg->lm_buflens[segment] >= newlen);
 458
 459         if (msg->lm_buflens[segment] == newlen)
 460                 goto out;
 461
 462         if (move_data && msg->lm_bufcount > segment + 1) {
 463                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 464                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 465                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 466         }
 467
 468         msg->lm_buflens[segment] = newlen;
 469
 470         if (tail && tail_len) {
 471                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 472                 LASSERT(newpos <= tail);
 473                 if (newpos != tail)
 474                         memmove(newpos, tail, tail_len);
 475         }
 476 out:
 477         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 478 }
 479
 480 /*
 481  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 482  * we also move data forward from @segment + 1.
 483  *
 484  * if @newlen == 0, we remove the segment completely, but we still keep the
 485  * totally bufcount the same to save possible data moving. this will leave a
 486  * unused segment with size 0 at the tail, but that's ok.
 487  *
 488  * return new msg size after shrinking.
 489  *
 490  * CAUTION:
 491  * + if any buffers higher than @segment has been filled in, must call shrink
 492  *   with non-zero @move_data.
 493  * + caller should NOT keep pointers to msg buffers which higher than @segment
 494  *   after call shrink.
 495  */
 496 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 497                       unsigned int newlen, int move_data)
 498 {
 499         switch (msg->lm_magic) {
 500         case LUSTRE_MSG_MAGIC_V2:
 501                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 502         default:
 503                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 504         }
 505 }
 506 EXPORT_SYMBOL(lustre_shrink_msg);
 507
 508 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 509 {
 510         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 511
 512         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 513         LASSERT(!rs->rs_difficult || rs->rs_handled);
 514         LASSERT(!rs->rs_on_net);
 515         LASSERT(!rs->rs_scheduled);
 516         LASSERT(rs->rs_export == NULL);
 517         LASSERT(rs->rs_nlocks == 0);
 518         LASSERT(list_empty(&rs->rs_exp_list));
 519         LASSERT(list_empty(&rs->rs_obd_list));
 520
 521         sptlrpc_svc_free_rs(rs);
 522 }
 523
 524 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 525 {
 526         int swabbed, required_len, i;
 527
 528         /* Now we know the sender speaks my language. */
 529         required_len = lustre_msg_hdr_size_v2(0);
 530         if (len < required_len) {
 531                 /* can't even look inside the message */
 532                 CERROR("message length %d too small for lustre_msg\n", len);
 533                 return -EINVAL;
 534         }
 535
 536         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 537
 538         if (swabbed) {
 539                 __swab32s(&m->lm_magic);
 540                 __swab32s(&m->lm_bufcount);
 541                 __swab32s(&m->lm_secflvr);
 542                 __swab32s(&m->lm_repsize);
 543                 __swab32s(&m->lm_cksum);
 544                 __swab32s(&m->lm_flags);
 545                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 546                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 547         }
 548
 549         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 550         if (len < required_len) {
 551                 /* didn't receive all the buffer lengths */
 552                 CERROR ("message length %d too small for %d buflens\n",
 553                         len, m->lm_bufcount);
 554                 return -EINVAL;
 555         }
 556
 557         for (i = 0; i < m->lm_bufcount; i++) {
 558                 if (swabbed)
 559                         __swab32s(&m->lm_buflens[i]);
 560                 required_len += cfs_size_round(m->lm_buflens[i]);
 561         }
 562
 563         if (len < required_len) {
 564                 CERROR("len: %d, required_len %d\n", len, required_len);
 565                 CERROR("bufcount: %d\n", m->lm_bufcount);
 566                 for (i = 0; i < m->lm_bufcount; i++)
 567                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 568                 return -EINVAL;
 569         }
 570
 571         return swabbed;
 572 }
 573
 574 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 575 {
 576         int required_len, rc;
 577         ENTRY;
 578
 579         /* We can provide a slightly better error log, if we check the
 580          * message magic and version first.  In the future, struct
 581          * lustre_msg may grow, and we'd like to log a version mismatch,
 582          * rather than a short message.
 583          *
 584          */
 585         required_len = offsetof(struct lustre_msg, lm_magic) +
 586                        sizeof(m->lm_magic);
 587         if (len < required_len) {
 588                 /* can't even look inside the message */
 589                 CERROR("message length %d too small for magic/version check\n",
 590                        len);
 591                 RETURN(-EINVAL);
 592         }
 593
 594         rc = lustre_unpack_msg_v2(m, len);
 595
 596         RETURN(rc);
 597 }
 598 EXPORT_SYMBOL(__lustre_unpack_msg);
 599
 600 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 601 {
 602         int rc;
 603         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 604         if (rc == 1) {
 605                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 606                 rc = 0;
 607         }
 608         return rc;
 609 }
 610
 611 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 612 {
 613         int rc;
 614         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 615         if (rc == 1) {
 616                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 617                 rc = 0;
 618         }
 619         return rc;
 620 }
 621
 622 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 623                                                const int inout, int offset)
 624 {
 625         struct ptlrpc_body *pb;
 626         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 627
 628         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 629         if (!pb) {
 630                 CERROR("error unpacking ptlrpc body\n");
 631                 return -EFAULT;
 632         }
 633         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 634                 lustre_swab_ptlrpc_body(pb);
 635                 ptlrpc_buf_set_swabbed(req, inout, offset);
 636         }
 637
 638         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 639                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 640                  return -EINVAL;
 641         }
 642
 643         if (!inout)
 644                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 645
 646         return 0;
 647 }
 648
 649 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 650 {
 651         switch (req->rq_reqmsg->lm_magic) {
 652         case LUSTRE_MSG_MAGIC_V2:
 653                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 654         default:
 655                 CERROR("bad lustre msg magic: %08x\n",
 656                        req->rq_reqmsg->lm_magic);
 657                 return -EINVAL;
 658         }
 659 }
 660
 661 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 662 {
 663         switch (req->rq_repmsg->lm_magic) {
 664         case LUSTRE_MSG_MAGIC_V2:
 665                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 666         default:
 667                 CERROR("bad lustre msg magic: %08x\n",
 668                        req->rq_repmsg->lm_magic);
 669                 return -EINVAL;
 670         }
 671 }
 672
 673 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 674 {
 675         if (n >= m->lm_bufcount)
 676                 return 0;
 677
 678         return m->lm_buflens[n];
 679 }
 680
 681 /**
 682  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 683  * \param m lustre_msg (request or reply) to look at
 684  * \param n message index (base 0)
 685  *
 686  * returns zero for non-existent message indices
 687  */
 688 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 689 {
 690         switch (m->lm_magic) {
 691         case LUSTRE_MSG_MAGIC_V2:
 692                 return lustre_msg_buflen_v2(m, n);
 693         default:
 694                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 695                 return 0;
 696         }
 697 }
 698 EXPORT_SYMBOL(lustre_msg_buflen);
 699
 700 static inline void
 701 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 702 {
 703         if (n >= m->lm_bufcount)
 704                 LBUG();
 705
 706         m->lm_buflens[n] = len;
 707 }
 708
 709 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 710 {
 711         switch (m->lm_magic) {
 712         case LUSTRE_MSG_MAGIC_V2:
 713                 lustre_msg_set_buflen_v2(m, n, len);
 714                 return;
 715         default:
 716                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 717         }
 718 }
 719
 720 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 721  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 722 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 723 {
 724         switch (m->lm_magic) {
 725         case LUSTRE_MSG_MAGIC_V2:
 726                 return m->lm_bufcount;
 727         default:
 728                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 729                 return 0;
 730         }
 731 }
 732
 733 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 734 {
 735         /* max_len == 0 means the string should fill the buffer */
 736         char *str;
 737         __u32 slen, blen;
 738
 739         switch (m->lm_magic) {
 740         case LUSTRE_MSG_MAGIC_V2:
 741                 str = lustre_msg_buf_v2(m, index, 0);
 742                 blen = lustre_msg_buflen_v2(m, index);
 743                 break;
 744         default:
 745                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 746         }
 747
 748         if (str == NULL) {
 749                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 750                 return NULL;
 751         }
 752
 753         slen = strnlen(str, blen);
 754
 755         if (slen == blen) {                     /* not NULL terminated */
 756                 CERROR("can't unpack non-NULL terminated string in "
 757                         "msg %p buffer[%d] len %d\n", m, index, blen);
 758                 return NULL;
 759         }
 760
 761         if (max_len == 0) {
 762                 if (slen != blen - 1) {
 763                         CERROR("can't unpack short string in msg %p "
 764                                "buffer[%d] len %d: strlen %d\n",
 765                                m, index, blen, slen);
 766                         return NULL;
 767                 }
 768         } else if (slen > max_len) {
 769                 CERROR("can't unpack oversized string in msg %p "
 770                        "buffer[%d] len %d strlen %d: max %d expected\n",
 771                        m, index, blen, slen, max_len);
 772                 return NULL;
 773         }
 774
 775         return str;
 776 }
 777
 778 /* Wrap up the normal fixed length cases */
 779 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 780                                       __u32 min_size, void *swabber)
 781 {
 782         void *ptr = NULL;
 783
 784         LASSERT(msg != NULL);
 785         switch (msg->lm_magic) {
 786         case LUSTRE_MSG_MAGIC_V2:
 787                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 788                 break;
 789         default:
 790                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 791         }
 792
 793         if (ptr != NULL && swabber != NULL)
 794                 ((void (*)(void *))swabber)(ptr);
 795
 796         return ptr;
 797 }
 798
 799 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 800 {
 801         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 802                                  sizeof(struct ptlrpc_body_v2));
 803 }
 804
 805 enum lustre_msghdr lustre_msghdr_get_flags(struct lustre_msg *msg)
 806 {
 807         switch (msg->lm_magic) {
 808         case LUSTRE_MSG_MAGIC_V2:
 809                 /* already in host endian */
 810                 return msg->lm_flags;
 811         default:
 812                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 813                 return 0;
 814         }
 815 }
 816 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 817
 818 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 819 {
 820         switch (msg->lm_magic) {
 821         case LUSTRE_MSG_MAGIC_V2:
 822                 msg->lm_flags = flags;
 823                 return;
 824         default:
 825                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 826         }
 827 }
 828
 829 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 830 {
 831         switch (msg->lm_magic) {
 832         case LUSTRE_MSG_MAGIC_V2: {
 833                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 834                 if (pb != NULL)
 835                         return pb->pb_flags;
 836
 837                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 838         }
 839         /* no break */
 840         default:
 841                 /* flags might be printed in debug code while message
 842                  * uninitialized */
 843                 return 0;
 844         }
 845 }
 846 EXPORT_SYMBOL(lustre_msg_get_flags);
 847
 848 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 849 {
 850         switch (msg->lm_magic) {
 851         case LUSTRE_MSG_MAGIC_V2: {
 852                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 853                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 854                 pb->pb_flags |= flags;
 855                 return;
 856         }
 857         default:
 858                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 859         }
 860 }
 861 EXPORT_SYMBOL(lustre_msg_add_flags);
 862
 863 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
 864 {
 865         switch (msg->lm_magic) {
 866         case LUSTRE_MSG_MAGIC_V2: {
 867                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 868                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 869                 pb->pb_flags = flags;
 870                 return;
 871         }
 872         default:
 873                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 874         }
 875 }
 876
 877 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 878 {
 879         switch (msg->lm_magic) {
 880         case LUSTRE_MSG_MAGIC_V2: {
 881                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 882                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 883                 pb->pb_flags &= ~flags;
 884
 885                 return;
 886         }
 887         default:
 888                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 889         }
 890 }
 891 EXPORT_SYMBOL(lustre_msg_clear_flags);
 892
 893 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 894 {
 895         switch (msg->lm_magic) {
 896         case LUSTRE_MSG_MAGIC_V2: {
 897                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 898                 if (pb != NULL)
 899                         return pb->pb_op_flags;
 900
 901                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 902         }
 903         /* no break */
 904         default:
 905                 return 0;
 906         }
 907 }
 908
 909 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 910 {
 911         switch (msg->lm_magic) {
 912         case LUSTRE_MSG_MAGIC_V2: {
 913                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 914                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 915                 pb->pb_op_flags |= flags;
 916                 return;
 917         }
 918         default:
 919                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 920         }
 921 }
 922 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 923
 924 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 925 {
 926         switch (msg->lm_magic) {
 927         case LUSTRE_MSG_MAGIC_V2: {
 928                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 929                 if (pb == NULL) {
 930                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 931                         return NULL;
 932                 }
 933                 return &pb->pb_handle;
 934         }
 935         default:
 936                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 937                 return NULL;
 938         }
 939 }
 940
 941 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 942 {
 943         switch (msg->lm_magic) {
 944         case LUSTRE_MSG_MAGIC_V2: {
 945                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 946                 if (pb == NULL) {
 947                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 948                         return PTL_RPC_MSG_ERR;
 949                 }
 950                 return pb->pb_type;
 951         }
 952         default:
 953                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 954                 return PTL_RPC_MSG_ERR;
 955         }
 956 }
 957 EXPORT_SYMBOL(lustre_msg_get_type);
 958
 959 enum lustre_msg_version lustre_msg_get_version(struct lustre_msg *msg)
 960 {
 961         switch (msg->lm_magic) {
 962         case LUSTRE_MSG_MAGIC_V2: {
 963                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 964                 if (pb == NULL) {
 965                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 966                         return 0;
 967                 }
 968                 return pb->pb_version;
 969         }
 970         default:
 971                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 972                 return 0;
 973         }
 974 }
 975
 976 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
 977 {
 978         switch (msg->lm_magic) {
 979         case LUSTRE_MSG_MAGIC_V2: {
 980                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 981                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 982                 pb->pb_version |= version;
 983                 return;
 984         }
 985         default:
 986                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 987         }
 988 }
 989
 990 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
 991 {
 992         switch (msg->lm_magic) {
 993         case LUSTRE_MSG_MAGIC_V2: {
 994                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 995                 if (pb == NULL) {
 996                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 997                         return 0;
 998                 }
 999                 return pb->pb_opc;
1000         }
1001         default:
1002                 CERROR("incorrect message magic: %08x (msg:%p)\n",
1003                        msg->lm_magic, msg);
1004                 return 0;
1005         }
1006 }
1007 EXPORT_SYMBOL(lustre_msg_get_opc);
1008
1009 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1010 {
1011         switch (msg->lm_magic) {
1012         case LUSTRE_MSG_MAGIC_V2: {
1013                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1014                 if (pb == NULL) {
1015                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1016                         return 0;
1017                 }
1018                 return pb->pb_last_xid;
1019         }
1020         default:
1021                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1022                 return 0;
1023         }
1024 }
1025 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1026
1027 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1028 {
1029         switch (msg->lm_magic) {
1030         case LUSTRE_MSG_MAGIC_V2: {
1031                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1032                 if (!pb) {
1033                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1034                         return 0;
1035                 }
1036                 return pb->pb_tag;
1037         }
1038         default:
1039                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1040                 return 0;
1041         }
1042 }
1043 EXPORT_SYMBOL(lustre_msg_get_tag);
1044
1045 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1046 {
1047         switch (msg->lm_magic) {
1048         case LUSTRE_MSG_MAGIC_V2: {
1049                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1050                 if (pb == NULL) {
1051                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1052                         return 0;
1053                 }
1054                 return pb->pb_last_committed;
1055         }
1056         default:
1057                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1058                 return 0;
1059         }
1060 }
1061 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1062
1063 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1064 {
1065         switch (msg->lm_magic) {
1066         case LUSTRE_MSG_MAGIC_V2: {
1067                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1068                 if (pb == NULL) {
1069                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1070                         return NULL;
1071                 }
1072                 return pb->pb_pre_versions;
1073         }
1074         default:
1075                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1076                 return NULL;
1077         }
1078 }
1079 EXPORT_SYMBOL(lustre_msg_get_versions);
1080
1081 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1082 {
1083         switch (msg->lm_magic) {
1084         case LUSTRE_MSG_MAGIC_V2: {
1085                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1086                 if (pb == NULL) {
1087                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1088                         return 0;
1089                 }
1090                 return pb->pb_transno;
1091         }
1092         default:
1093                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1094                 return 0;
1095         }
1096 }
1097 EXPORT_SYMBOL(lustre_msg_get_transno);
1098
1099 int lustre_msg_get_status(struct lustre_msg *msg)
1100 {
1101         switch (msg->lm_magic) {
1102         case LUSTRE_MSG_MAGIC_V2: {
1103                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1104                 if (pb != NULL)
1105                         return pb->pb_status;
1106                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1107         }
1108         /* no break */
1109         default:
1110                 /* status might be printed in debug code while message
1111                 * uninitialized */
1112                 return -EINVAL;
1113         }
1114 }
1115 EXPORT_SYMBOL(lustre_msg_get_status);
1116
1117 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1118 {
1119         switch (msg->lm_magic) {
1120         case LUSTRE_MSG_MAGIC_V2: {
1121                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1122                 if (pb == NULL) {
1123                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1124                         return -EINVAL;
1125                 }
1126                 return pb->pb_slv;
1127         }
1128         default:
1129                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1130                 return -EINVAL;
1131         }
1132 }
1133
1134
1135 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1136 {
1137         switch (msg->lm_magic) {
1138         case LUSTRE_MSG_MAGIC_V2: {
1139                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1140                 if (pb == NULL) {
1141                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1142                         return;
1143                 }
1144                 pb->pb_slv = slv;
1145                 return;
1146         }
1147         default:
1148                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1149                 return;
1150         }
1151 }
1152
1153 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1154 {
1155         switch (msg->lm_magic) {
1156         case LUSTRE_MSG_MAGIC_V2: {
1157                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1158                 if (pb == NULL) {
1159                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1160                         return -EINVAL;
1161                 }
1162                 return pb->pb_limit;
1163         }
1164         default:
1165                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1166                 return -EINVAL;
1167         }
1168 }
1169
1170
1171 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1172 {
1173         switch (msg->lm_magic) {
1174         case LUSTRE_MSG_MAGIC_V2: {
1175                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1176                 if (pb == NULL) {
1177                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1178                         return;
1179                 }
1180                 pb->pb_limit = limit;
1181                 return;
1182         }
1183         default:
1184                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1185                 return;
1186         }
1187 }
1188
1189 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1190 {
1191         switch (msg->lm_magic) {
1192         case LUSTRE_MSG_MAGIC_V2: {
1193                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1194                 if (pb == NULL) {
1195                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1196                         return 0;
1197                 }
1198                 return pb->pb_conn_cnt;
1199         }
1200         default:
1201                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1202                 return 0;
1203         }
1204 }
1205 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1206
1207 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1208 {
1209         switch (msg->lm_magic) {
1210         case LUSTRE_MSG_MAGIC_V2:
1211                 return msg->lm_magic;
1212         default:
1213                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1214                 return 0;
1215         }
1216 }
1217
1218 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1219 {
1220         switch (msg->lm_magic) {
1221         case LUSTRE_MSG_MAGIC_V2: {
1222                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1223                 if (pb == NULL) {
1224                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1225                         return 0;
1226                 }
1227                 return pb->pb_timeout;
1228         }
1229         default:
1230                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1231                 return 0;
1232         }
1233 }
1234
1235 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1236 {
1237         switch (msg->lm_magic) {
1238         case LUSTRE_MSG_MAGIC_V2: {
1239                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1240                 if (pb == NULL) {
1241                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1242                         return 0;
1243                 }
1244                 return pb->pb_service_time;
1245         }
1246         default:
1247                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1248                 return 0;
1249         }
1250 }
1251
1252 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1253 {
1254         switch (msg->lm_magic) {
1255         case LUSTRE_MSG_MAGIC_V2: {
1256                 struct ptlrpc_body *pb;
1257
1258                 /* the old pltrpc_body_v2 is smaller; doesn't include jobid */
1259                 if (msg->lm_buflens[MSG_PTLRPC_BODY_OFF] <
1260                     sizeof(struct ptlrpc_body))
1261                         return NULL;
1262
1263                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1264                                           sizeof(struct ptlrpc_body));
1265                 if (!pb)
1266                         return NULL;
1267
1268                 return pb->pb_jobid;
1269         }
1270         default:
1271                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1272                 return NULL;
1273         }
1274 }
1275 EXPORT_SYMBOL(lustre_msg_get_jobid);
1276
1277 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1278 {
1279         switch (msg->lm_magic) {
1280         case LUSTRE_MSG_MAGIC_V2:
1281                 return msg->lm_cksum;
1282         default:
1283                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1284                 return 0;
1285         }
1286 }
1287
1288 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1289 {
1290         switch (msg->lm_magic) {
1291         case LUSTRE_MSG_MAGIC_V2: {
1292                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1293                 if (pb == NULL) {
1294                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1295                         return 0;
1296                 }
1297                 return pb->pb_mbits;
1298         }
1299         default:
1300                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1301                 return 0;
1302         }
1303 }
1304
1305 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1306 {
1307         switch (msg->lm_magic) {
1308         case LUSTRE_MSG_MAGIC_V2: {
1309                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1310                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1311
1312                 unsigned int hsize = 4;
1313                 __u32 crc;
1314
1315                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1316                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1317                                        len, NULL, 0, (unsigned char *)&crc,
1318                                        &hsize);
1319                 return crc;
1320         }
1321         default:
1322                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1323                 return 0;
1324         }
1325 }
1326
1327 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1328 {
1329         switch (msg->lm_magic) {
1330         case LUSTRE_MSG_MAGIC_V2: {
1331                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1332                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1333                 pb->pb_handle = *handle;
1334                 return;
1335         }
1336         default:
1337                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1338         }
1339 }
1340
1341 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1342 {
1343         switch (msg->lm_magic) {
1344         case LUSTRE_MSG_MAGIC_V2: {
1345                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1346                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1347                 pb->pb_type = type;
1348                 return;
1349                 }
1350         default:
1351                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1352         }
1353 }
1354
1355 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1356 {
1357         switch (msg->lm_magic) {
1358         case LUSTRE_MSG_MAGIC_V2: {
1359                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1360                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1361                 pb->pb_opc = opc;
1362                 return;
1363         }
1364         default:
1365                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1366         }
1367 }
1368
1369 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1370 {
1371         switch (msg->lm_magic) {
1372         case LUSTRE_MSG_MAGIC_V2: {
1373                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1374                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1375                 pb->pb_last_xid = last_xid;
1376                 return;
1377         }
1378         default:
1379                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1380         }
1381 }
1382 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1383
1384 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1385 {
1386         switch (msg->lm_magic) {
1387         case LUSTRE_MSG_MAGIC_V2: {
1388                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1389                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1390                 pb->pb_tag = tag;
1391                 return;
1392         }
1393         default:
1394                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1395         }
1396 }
1397 EXPORT_SYMBOL(lustre_msg_set_tag);
1398
1399 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1400 {
1401         switch (msg->lm_magic) {
1402         case LUSTRE_MSG_MAGIC_V2: {
1403                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1404                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1405                 pb->pb_last_committed = last_committed;
1406                 return;
1407         }
1408         default:
1409                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1410         }
1411 }
1412
1413 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1414 {
1415         switch (msg->lm_magic) {
1416         case LUSTRE_MSG_MAGIC_V2: {
1417                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1418                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1419                 pb->pb_pre_versions[0] = versions[0];
1420                 pb->pb_pre_versions[1] = versions[1];
1421                 pb->pb_pre_versions[2] = versions[2];
1422                 pb->pb_pre_versions[3] = versions[3];
1423                 return;
1424         }
1425         default:
1426                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1427         }
1428 }
1429 EXPORT_SYMBOL(lustre_msg_set_versions);
1430
1431 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1432 {
1433         switch (msg->lm_magic) {
1434         case LUSTRE_MSG_MAGIC_V2: {
1435                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1436                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1437                 pb->pb_transno = transno;
1438                 return;
1439         }
1440         default:
1441                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1442         }
1443 }
1444 EXPORT_SYMBOL(lustre_msg_set_transno);
1445
1446 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1447 {
1448         switch (msg->lm_magic) {
1449         case LUSTRE_MSG_MAGIC_V2: {
1450                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1451                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1452                 pb->pb_status = status;
1453                 return;
1454         }
1455         default:
1456                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1457         }
1458 }
1459 EXPORT_SYMBOL(lustre_msg_set_status);
1460
1461 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1462 {
1463         switch (msg->lm_magic) {
1464         case LUSTRE_MSG_MAGIC_V2: {
1465                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1466                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1467                 pb->pb_conn_cnt = conn_cnt;
1468                 return;
1469         }
1470         default:
1471                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1472         }
1473 }
1474
1475 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1476 {
1477         switch (msg->lm_magic) {
1478         case LUSTRE_MSG_MAGIC_V2: {
1479                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1480                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1481                 pb->pb_timeout = timeout;
1482                 return;
1483         }
1484         default:
1485                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1486         }
1487 }
1488
1489 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1490 {
1491         switch (msg->lm_magic) {
1492         case LUSTRE_MSG_MAGIC_V2: {
1493                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1494                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1495                 pb->pb_service_time = service_time;
1496                 return;
1497         }
1498         default:
1499                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1500         }
1501 }
1502
1503 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1504 {
1505         switch (msg->lm_magic) {
1506         case LUSTRE_MSG_MAGIC_V2: {
1507                 __u32 opc = lustre_msg_get_opc(msg);
1508                 struct ptlrpc_body *pb;
1509
1510                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1511                  * See the comment in ptlrpc_request_pack(). */
1512                 if (!opc || opc == LDLM_BL_CALLBACK ||
1513                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1514                         return;
1515
1516                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1517                                        sizeof(struct ptlrpc_body));
1518                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1519
1520                 if (jobid != NULL)
1521                         memcpy(pb->pb_jobid, jobid, sizeof(pb->pb_jobid));
1522                 else if (pb->pb_jobid[0] == '\0')
1523                         lustre_get_jobid(pb->pb_jobid, sizeof(pb->pb_jobid));
1524                 return;
1525         }
1526         default:
1527                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1528         }
1529 }
1530 EXPORT_SYMBOL(lustre_msg_set_jobid);
1531
1532 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1533 {
1534         switch (msg->lm_magic) {
1535         case LUSTRE_MSG_MAGIC_V2:
1536                 msg->lm_cksum = cksum;
1537                 return;
1538         default:
1539                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1540         }
1541 }
1542
1543 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1544 {
1545         switch (msg->lm_magic) {
1546         case LUSTRE_MSG_MAGIC_V2: {
1547                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1548
1549                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1550                 pb->pb_mbits = mbits;
1551                 return;
1552         }
1553         default:
1554                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1555         }
1556 }
1557
1558 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1559 {
1560         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1561
1562         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1563                                          req->rq_pill.rc_area[RCL_SERVER]);
1564         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1565                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1566 }
1567 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1568
1569 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1570 {
1571         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1572         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1573                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1574 }
1575
1576 /**
1577  * Send a remote set_info_async.
1578  *
1579  * This may go from client to server or server to client.
1580  */
1581 int do_set_info_async(struct obd_import *imp,
1582                       int opcode, int version,
1583                       size_t keylen, void *key,
1584                       size_t vallen, void *val,
1585                       struct ptlrpc_request_set *set)
1586 {
1587         struct ptlrpc_request *req;
1588         char                  *tmp;
1589         int                    rc;
1590         ENTRY;
1591
1592         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1593         if (req == NULL)
1594                 RETURN(-ENOMEM);
1595
1596         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1597                              RCL_CLIENT, keylen);
1598         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1599                              RCL_CLIENT, vallen);
1600         rc = ptlrpc_request_pack(req, version, opcode);
1601         if (rc) {
1602                 ptlrpc_request_free(req);
1603                 RETURN(rc);
1604         }
1605
1606         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1607         memcpy(tmp, key, keylen);
1608         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1609         memcpy(tmp, val, vallen);
1610
1611         ptlrpc_request_set_replen(req);
1612
1613         if (set) {
1614                 ptlrpc_set_add_req(set, req);
1615                 ptlrpc_check_set(NULL, set);
1616         } else {
1617                 rc = ptlrpc_queue_wait(req);
1618                 ptlrpc_req_finished(req);
1619         }
1620
1621         RETURN(rc);
1622 }
1623 EXPORT_SYMBOL(do_set_info_async);
1624
1625 /* byte flipping routines for all wire types declared in
1626  * lustre_idl.h implemented here.
1627  */
1628 void lustre_swab_ptlrpc_body(struct ptlrpc_body *body)
1629 {
1630         __swab32s(&body->pb_type);
1631         __swab32s(&body->pb_version);
1632         __swab32s(&body->pb_opc);
1633         __swab32s(&body->pb_status);
1634         __swab64s(&body->pb_last_xid);
1635         __swab16s(&body->pb_tag);
1636         CLASSERT(offsetof(typeof(*body), pb_padding0) != 0);
1637         CLASSERT(offsetof(typeof(*body), pb_padding1) != 0);
1638         __swab64s(&body->pb_last_committed);
1639         __swab64s(&body->pb_transno);
1640         __swab32s(&body->pb_flags);
1641         __swab32s(&body->pb_op_flags);
1642         __swab32s(&body->pb_conn_cnt);
1643         __swab32s(&body->pb_timeout);
1644         __swab32s(&body->pb_service_time);
1645         __swab32s(&body->pb_limit);
1646         __swab64s(&body->pb_slv);
1647         __swab64s(&body->pb_pre_versions[0]);
1648         __swab64s(&body->pb_pre_versions[1]);
1649         __swab64s(&body->pb_pre_versions[2]);
1650         __swab64s(&body->pb_pre_versions[3]);
1651         __swab64s(&body->pb_mbits);
1652         CLASSERT(offsetof(typeof(*body), pb_padding64_0) != 0);
1653         CLASSERT(offsetof(typeof(*body), pb_padding64_1) != 0);
1654         CLASSERT(offsetof(typeof(*body), pb_padding64_2) != 0);
1655         /* While we need to maintain compatibility between
1656          * clients and servers without ptlrpc_body_v2 (< 2.3)
1657          * do not swab any fields beyond pb_jobid, as we are
1658          * using this swab function for both ptlrpc_body
1659          * and ptlrpc_body_v2. */
1660         /* pb_jobid is an ASCII string and should not be swabbed */
1661         CLASSERT(offsetof(typeof(*body), pb_jobid) != 0);
1662 }
1663
1664 void lustre_swab_connect(struct obd_connect_data *ocd)
1665 {
1666         __swab64s(&ocd->ocd_connect_flags);
1667         __swab32s(&ocd->ocd_version);
1668         __swab32s(&ocd->ocd_grant);
1669         __swab64s(&ocd->ocd_ibits_known);
1670         __swab32s(&ocd->ocd_index);
1671         __swab32s(&ocd->ocd_brw_size);
1672         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1673          * they are 8-byte values */
1674         __swab16s(&ocd->ocd_grant_tax_kb);
1675         __swab32s(&ocd->ocd_grant_max_blks);
1676         __swab64s(&ocd->ocd_transno);
1677         __swab32s(&ocd->ocd_group);
1678         __swab32s(&ocd->ocd_cksum_types);
1679         __swab32s(&ocd->ocd_instance);
1680         /* Fields after ocd_cksum_types are only accessible by the receiver
1681          * if the corresponding flag in ocd_connect_flags is set. Accessing
1682          * any field after ocd_maxbytes on the receiver without a valid flag
1683          * may result in out-of-bound memory access and kernel oops. */
1684         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1685                 __swab32s(&ocd->ocd_max_easize);
1686         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1687                 __swab64s(&ocd->ocd_maxbytes);
1688         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1689                 __swab16s(&ocd->ocd_maxmodrpcs);
1690         CLASSERT(offsetof(typeof(*ocd), padding0) != 0);
1691         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1692         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1693                 __swab64s(&ocd->ocd_connect_flags2);
1694         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1695         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1696         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1697         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1698         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1699         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1700         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1701         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1702         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1703         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1704         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1705         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1706         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1707 }
1708
1709 static void lustre_swab_ost_layout(struct ost_layout *ol)
1710 {
1711         __swab32s(&ol->ol_stripe_size);
1712         __swab32s(&ol->ol_stripe_count);
1713         __swab64s(&ol->ol_comp_start);
1714         __swab64s(&ol->ol_comp_end);
1715         __swab32s(&ol->ol_comp_id);
1716 }
1717
1718 void lustre_swab_obdo (struct obdo  *o)
1719 {
1720         __swab64s(&o->o_valid);
1721         lustre_swab_ost_id(&o->o_oi);
1722         __swab64s(&o->o_parent_seq);
1723         __swab64s(&o->o_size);
1724         __swab64s(&o->o_mtime);
1725         __swab64s(&o->o_atime);
1726         __swab64s(&o->o_ctime);
1727         __swab64s(&o->o_blocks);
1728         __swab64s(&o->o_grant);
1729         __swab32s(&o->o_blksize);
1730         __swab32s(&o->o_mode);
1731         __swab32s(&o->o_uid);
1732         __swab32s(&o->o_gid);
1733         __swab32s(&o->o_flags);
1734         __swab32s(&o->o_nlink);
1735         __swab32s(&o->o_parent_oid);
1736         __swab32s(&o->o_misc);
1737         __swab64s(&o->o_ioepoch);
1738         __swab32s(&o->o_stripe_idx);
1739         __swab32s(&o->o_parent_ver);
1740         lustre_swab_ost_layout(&o->o_layout);
1741         __swab32s(&o->o_layout_version);
1742         __swab32s(&o->o_uid_h);
1743         __swab32s(&o->o_gid_h);
1744         __swab64s(&o->o_data_version);
1745         __swab32s(&o->o_projid);
1746         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1747         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1748         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1749
1750 }
1751 EXPORT_SYMBOL(lustre_swab_obdo);
1752
1753 void lustre_swab_obd_statfs (struct obd_statfs *os)
1754 {
1755         __swab64s(&os->os_type);
1756         __swab64s(&os->os_blocks);
1757         __swab64s(&os->os_bfree);
1758         __swab64s(&os->os_bavail);
1759         __swab64s(&os->os_files);
1760         __swab64s(&os->os_ffree);
1761         /* no need to swab os_fsid */
1762         __swab32s(&os->os_bsize);
1763         __swab32s(&os->os_namelen);
1764         __swab64s(&os->os_maxbytes);
1765         __swab32s(&os->os_state);
1766         __swab32s(&os->os_fprecreated);
1767         __swab32s(&os->os_granted);
1768         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1769         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1770         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1771         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1772         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1773         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1774         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1775 }
1776
1777 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1778 {
1779         lustre_swab_ost_id(&ioo->ioo_oid);
1780         __swab32s(&ioo->ioo_max_brw);
1781         __swab32s(&ioo->ioo_bufcnt);
1782 }
1783
1784 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1785 {
1786         __swab64s(&nbr->rnb_offset);
1787         __swab32s(&nbr->rnb_len);
1788         __swab32s(&nbr->rnb_flags);
1789 }
1790
1791 void lustre_swab_ost_body (struct ost_body *b)
1792 {
1793         lustre_swab_obdo (&b->oa);
1794 }
1795
1796 void lustre_swab_ost_last_id(u64 *id)
1797 {
1798         __swab64s(id);
1799 }
1800
1801 void lustre_swab_generic_32s(__u32 *val)
1802 {
1803         __swab32s(val);
1804 }
1805
1806 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1807 {
1808         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1809         __swab64s(&desc->gl_flags);
1810         __swab64s(&desc->gl_ver);
1811         __swab64s(&desc->gl_hardlimit);
1812         __swab64s(&desc->gl_softlimit);
1813         __swab64s(&desc->gl_time);
1814         CLASSERT(offsetof(typeof(*desc), gl_pad2) != 0);
1815 }
1816 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1817
1818 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1819 {
1820         __swab32s(&desc->lgbd_status);
1821         __swab32s(&desc->lgbd_timeout);
1822         CLASSERT(offsetof(typeof(*desc), lgbd_padding) != 0);
1823 }
1824 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1825
1826 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1827 {
1828         __swab64s(&lvb->lvb_size);
1829         __swab64s(&lvb->lvb_mtime);
1830         __swab64s(&lvb->lvb_atime);
1831         __swab64s(&lvb->lvb_ctime);
1832         __swab64s(&lvb->lvb_blocks);
1833 }
1834 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1835
1836 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1837 {
1838         __swab64s(&lvb->lvb_size);
1839         __swab64s(&lvb->lvb_mtime);
1840         __swab64s(&lvb->lvb_atime);
1841         __swab64s(&lvb->lvb_ctime);
1842         __swab64s(&lvb->lvb_blocks);
1843         __swab32s(&lvb->lvb_mtime_ns);
1844         __swab32s(&lvb->lvb_atime_ns);
1845         __swab32s(&lvb->lvb_ctime_ns);
1846         __swab32s(&lvb->lvb_padding);
1847 }
1848 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1849
1850 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1851 {
1852         __swab64s(&lvb->lvb_flags);
1853         __swab64s(&lvb->lvb_id_may_rel);
1854         __swab64s(&lvb->lvb_id_rel);
1855         __swab64s(&lvb->lvb_id_qunit);
1856         __swab64s(&lvb->lvb_pad1);
1857 }
1858 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1859
1860 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1861 {
1862         __swab32s(&lvb->lvb_status);
1863         __swab32s(&lvb->lvb_index);
1864         CLASSERT(offsetof(typeof(*lvb), lvb_padding) != 0);
1865 }
1866 EXPORT_SYMBOL(lustre_swab_barrier_lvb);
1867
1868 void lustre_swab_mdt_body (struct mdt_body *b)
1869 {
1870         lustre_swab_lu_fid(&b->mbo_fid1);
1871         lustre_swab_lu_fid(&b->mbo_fid2);
1872         /* handle is opaque */
1873         __swab64s(&b->mbo_valid);
1874         __swab64s(&b->mbo_size);
1875         __swab64s(&b->mbo_mtime);
1876         __swab64s(&b->mbo_atime);
1877         __swab64s(&b->mbo_ctime);
1878         __swab64s(&b->mbo_blocks);
1879         __swab64s(&b->mbo_version);
1880         __swab64s(&b->mbo_t_state);
1881         __swab32s(&b->mbo_fsuid);
1882         __swab32s(&b->mbo_fsgid);
1883         __swab32s(&b->mbo_capability);
1884         __swab32s(&b->mbo_mode);
1885         __swab32s(&b->mbo_uid);
1886         __swab32s(&b->mbo_gid);
1887         __swab32s(&b->mbo_flags);
1888         __swab32s(&b->mbo_rdev);
1889         __swab32s(&b->mbo_nlink);
1890         __swab32s(&b->mbo_layout_gen);
1891         __swab32s(&b->mbo_suppgid);
1892         __swab32s(&b->mbo_eadatasize);
1893         __swab32s(&b->mbo_aclsize);
1894         __swab32s(&b->mbo_max_mdsize);
1895         CLASSERT(offsetof(typeof(*b), mbo_unused3) != 0);
1896         __swab32s(&b->mbo_uid_h);
1897         __swab32s(&b->mbo_gid_h);
1898         __swab32s(&b->mbo_projid);
1899         __swab64s(&b->mbo_dom_size);
1900         __swab64s(&b->mbo_dom_blocks);
1901         CLASSERT(offsetof(typeof(*b), mbo_padding_8) != 0);
1902         CLASSERT(offsetof(typeof(*b), mbo_padding_9) != 0);
1903         CLASSERT(offsetof(typeof(*b), mbo_padding_10) != 0);
1904 }
1905
1906 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1907 {
1908         /* mio_open_handle is opaque */
1909         CLASSERT(offsetof(typeof(*b), mio_unused1) != 0);
1910         CLASSERT(offsetof(typeof(*b), mio_unused2) != 0);
1911         CLASSERT(offsetof(typeof(*b), mio_padding) != 0);
1912 }
1913
1914 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1915 {
1916         int i;
1917
1918         __swab32s(&mti->mti_lustre_ver);
1919         __swab32s(&mti->mti_stripe_index);
1920         __swab32s(&mti->mti_config_ver);
1921         __swab32s(&mti->mti_flags);
1922         __swab32s(&mti->mti_instance);
1923         __swab32s(&mti->mti_nid_count);
1924         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1925         for (i = 0; i < MTI_NIDS_MAX; i++)
1926                 __swab64s(&mti->mti_nids[i]);
1927 }
1928
1929 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1930 {
1931         __u8 i;
1932
1933         __swab64s(&entry->mne_version);
1934         __swab32s(&entry->mne_instance);
1935         __swab32s(&entry->mne_index);
1936         __swab32s(&entry->mne_length);
1937
1938         /* mne_nid_(count|type) must be one byte size because we're gonna
1939          * access it w/o swapping. */
1940         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1941         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1942
1943         /* remove this assertion if ipv6 is supported. */
1944         LASSERT(entry->mne_nid_type == 0);
1945         for (i = 0; i < entry->mne_nid_count; i++) {
1946                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1947                 __swab64s(&entry->u.nids[i]);
1948         }
1949 }
1950 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1951
1952 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1953 {
1954         __swab64s(&body->mcb_offset);
1955         __swab32s(&body->mcb_units);
1956         __swab16s(&body->mcb_type);
1957 }
1958
1959 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1960 {
1961         __swab64s(&body->mcr_offset);
1962         __swab64s(&body->mcr_size);
1963 }
1964
1965 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1966 {
1967         __swab64s (&i->dqi_bgrace);
1968         __swab64s (&i->dqi_igrace);
1969         __swab32s (&i->dqi_flags);
1970         __swab32s (&i->dqi_valid);
1971 }
1972
1973 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1974 {
1975         __swab64s (&b->dqb_ihardlimit);
1976         __swab64s (&b->dqb_isoftlimit);
1977         __swab64s (&b->dqb_curinodes);
1978         __swab64s (&b->dqb_bhardlimit);
1979         __swab64s (&b->dqb_bsoftlimit);
1980         __swab64s (&b->dqb_curspace);
1981         __swab64s (&b->dqb_btime);
1982         __swab64s (&b->dqb_itime);
1983         __swab32s (&b->dqb_valid);
1984         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1985 }
1986
1987 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1988 {
1989         __swab32s (&q->qc_cmd);
1990         __swab32s (&q->qc_type);
1991         __swab32s (&q->qc_id);
1992         __swab32s (&q->qc_stat);
1993         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1994         lustre_swab_obd_dqblk (&q->qc_dqblk);
1995 }
1996
1997 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
1998 {
1999         lustre_swab_lu_fid(&gf->gf_fid);
2000         __swab64s(&gf->gf_recno);
2001         __swab32s(&gf->gf_linkno);
2002         __swab32s(&gf->gf_pathlen);
2003 }
2004 EXPORT_SYMBOL(lustre_swab_fid2path);
2005
2006 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
2007 {
2008         __swab64s(&fm_extent->fe_logical);
2009         __swab64s(&fm_extent->fe_physical);
2010         __swab64s(&fm_extent->fe_length);
2011         __swab32s(&fm_extent->fe_flags);
2012         __swab32s(&fm_extent->fe_device);
2013 }
2014
2015 void lustre_swab_fiemap(struct fiemap *fiemap)
2016 {
2017         __u32 i;
2018
2019         __swab64s(&fiemap->fm_start);
2020         __swab64s(&fiemap->fm_length);
2021         __swab32s(&fiemap->fm_flags);
2022         __swab32s(&fiemap->fm_mapped_extents);
2023         __swab32s(&fiemap->fm_extent_count);
2024         __swab32s(&fiemap->fm_reserved);
2025
2026         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2027                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2028 }
2029
2030 void lustre_swab_idx_info(struct idx_info *ii)
2031 {
2032         __swab32s(&ii->ii_magic);
2033         __swab32s(&ii->ii_flags);
2034         __swab16s(&ii->ii_count);
2035         __swab32s(&ii->ii_attrs);
2036         lustre_swab_lu_fid(&ii->ii_fid);
2037         __swab64s(&ii->ii_version);
2038         __swab64s(&ii->ii_hash_start);
2039         __swab64s(&ii->ii_hash_end);
2040         __swab16s(&ii->ii_keysize);
2041         __swab16s(&ii->ii_recsize);
2042 }
2043
2044 void lustre_swab_lip_header(struct lu_idxpage *lip)
2045 {
2046         /* swab header */
2047         __swab32s(&lip->lip_magic);
2048         __swab16s(&lip->lip_flags);
2049         __swab16s(&lip->lip_nr);
2050 }
2051 EXPORT_SYMBOL(lustre_swab_lip_header);
2052
2053 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2054 {
2055         __swab32s(&rr->rr_opcode);
2056         __swab32s(&rr->rr_cap);
2057         __swab32s(&rr->rr_fsuid);
2058         /* rr_fsuid_h is unused */
2059         __swab32s(&rr->rr_fsgid);
2060         /* rr_fsgid_h is unused */
2061         __swab32s(&rr->rr_suppgid1);
2062         /* rr_suppgid1_h is unused */
2063         __swab32s(&rr->rr_suppgid2);
2064         /* rr_suppgid2_h is unused */
2065         lustre_swab_lu_fid(&rr->rr_fid1);
2066         lustre_swab_lu_fid(&rr->rr_fid2);
2067         __swab64s(&rr->rr_mtime);
2068         __swab64s(&rr->rr_atime);
2069         __swab64s(&rr->rr_ctime);
2070         __swab64s(&rr->rr_size);
2071         __swab64s(&rr->rr_blocks);
2072         __swab32s(&rr->rr_bias);
2073         __swab32s(&rr->rr_mode);
2074         __swab32s(&rr->rr_flags);
2075         __swab32s(&rr->rr_flags_h);
2076         __swab32s(&rr->rr_umask);
2077         __swab16s(&rr->rr_mirror_id);
2078
2079         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2080 };
2081
2082 void lustre_swab_lov_desc (struct lov_desc *ld)
2083 {
2084         __swab32s (&ld->ld_tgt_count);
2085         __swab32s (&ld->ld_active_tgt_count);
2086         __swab32s (&ld->ld_default_stripe_count);
2087         __swab32s (&ld->ld_pattern);
2088         __swab64s (&ld->ld_default_stripe_size);
2089         __swab64s (&ld->ld_default_stripe_offset);
2090         __swab32s (&ld->ld_qos_maxage);
2091         /* uuid endian insensitive */
2092 }
2093 EXPORT_SYMBOL(lustre_swab_lov_desc);
2094
2095 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2096 {
2097         __swab32s (&ld->ld_tgt_count);
2098         __swab32s (&ld->ld_active_tgt_count);
2099         __swab32s (&ld->ld_default_stripe_count);
2100         __swab32s (&ld->ld_pattern);
2101         __swab64s (&ld->ld_default_hash_size);
2102         __swab32s (&ld->ld_qos_maxage);
2103         /* uuid endian insensitive */
2104 }
2105
2106 /* This structure is always in little-endian */
2107 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2108 {
2109         int i;
2110
2111         __swab32s(&lmm1->lmv_magic);
2112         __swab32s(&lmm1->lmv_stripe_count);
2113         __swab32s(&lmm1->lmv_master_mdt_index);
2114         __swab32s(&lmm1->lmv_hash_type);
2115         __swab32s(&lmm1->lmv_layout_version);
2116         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2117                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2118 }
2119
2120 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2121 {
2122         switch (lmm->lmv_magic) {
2123         case LMV_MAGIC_V1:
2124                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2125                 break;
2126         default:
2127                 break;
2128         }
2129 }
2130 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2131
2132 void lustre_swab_lmv_user_md_objects(struct lmv_user_mds_data *lmd,
2133                                      int stripe_count)
2134 {
2135         int i;
2136
2137         for (i = 0; i < stripe_count; i++)
2138                 __swab32s(&(lmd[i].lum_mds));
2139 }
2140 EXPORT_SYMBOL(lustre_swab_lmv_user_md_objects);
2141
2142
2143 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2144 {
2145         __u32 count;
2146
2147         if (lum->lum_magic == LMV_MAGIC_FOREIGN) {
2148                 __swab32s(&lum->lum_magic);
2149                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_length);
2150                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_type);
2151                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_flags);
2152                 return;
2153         }
2154
2155         count = lum->lum_stripe_count;
2156         __swab32s(&lum->lum_magic);
2157         __swab32s(&lum->lum_stripe_count);
2158         __swab32s(&lum->lum_stripe_offset);
2159         __swab32s(&lum->lum_hash_type);
2160         __swab32s(&lum->lum_type);
2161         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2162         switch (lum->lum_magic) {
2163         case LMV_USER_MAGIC_SPECIFIC:
2164                 count = lum->lum_stripe_count;
2165         case __swab32(LMV_USER_MAGIC_SPECIFIC):
2166                 lustre_swab_lmv_user_md_objects(lum->lum_objects, count);
2167                 break;
2168         default:
2169                 break;
2170         }
2171 }
2172 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2173
2174 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2175                               const char *msg)
2176 {
2177         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2178         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2179         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2180         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2181         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2182         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2183         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2184         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2185                lum->lmm_stripe_offset);
2186         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2187                 struct lov_user_md_v3 *v3 = (void *)lum;
2188                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2189         }
2190         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2191                 struct lov_user_md_v3 *v3 = (void *)lum;
2192                 int i;
2193
2194                 if (v3->lmm_pool_name[0] != '\0')
2195                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2196
2197                 CDEBUG(lvl, "\ttarget list:\n");
2198                 for (i = 0; i < v3->lmm_stripe_count; i++)
2199                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2200         }
2201 }
2202
2203 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2204                           const char *msg)
2205 {
2206         struct lov_comp_md_v1   *comp_v1;
2207         int                      i;
2208
2209         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2210                 return;
2211
2212         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2213             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2214                 lustre_print_v1v3(lvl, lum, msg);
2215                 return;
2216         }
2217
2218         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2219                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2220                 return;
2221         }
2222
2223         comp_v1 = (struct lov_comp_md_v1 *)lum;
2224         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2225         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2226         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2227         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2228         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2229         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2230         CDEBUG(lvl, "\tlcm_mirror_count: %#x\n\n", comp_v1->lcm_mirror_count);
2231
2232         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2233                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2234                 struct lov_user_md *v1;
2235
2236                 CDEBUG(lvl, "\tentry %d:\n", i);
2237                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2238                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2239                 if (ent->lcme_flags & LCME_FL_NOSYNC)
2240                         CDEBUG(lvl, "\tlcme_timestamp: %llu\n",
2241                                         ent->lcme_timestamp);
2242                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2243                        ent->lcme_extent.e_start);
2244                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2245                        ent->lcme_extent.e_end);
2246                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2247                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2248
2249                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2250                                 comp_v1->lcm_entries[i].lcme_offset);
2251                 lustre_print_v1v3(lvl, v1, msg);
2252         }
2253 }
2254 EXPORT_SYMBOL(lustre_print_user_md);
2255
2256 static void lustre_swab_lmm_oi(struct ost_id *oi)
2257 {
2258         __swab64s(&oi->oi.oi_id);
2259         __swab64s(&oi->oi.oi_seq);
2260 }
2261
2262 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2263 {
2264         ENTRY;
2265         __swab32s(&lum->lmm_magic);
2266         __swab32s(&lum->lmm_pattern);
2267         lustre_swab_lmm_oi(&lum->lmm_oi);
2268         __swab32s(&lum->lmm_stripe_size);
2269         __swab16s(&lum->lmm_stripe_count);
2270         __swab16s(&lum->lmm_stripe_offset);
2271         EXIT;
2272 }
2273
2274 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2275 {
2276         ENTRY;
2277         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2278         lustre_swab_lov_user_md_common(lum);
2279         EXIT;
2280 }
2281 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2282
2283 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2284 {
2285         ENTRY;
2286         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2287         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2288         /* lmm_pool_name nothing to do with char */
2289         EXIT;
2290 }
2291 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2292
2293 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2294 {
2295         struct lov_comp_md_entry_v1     *ent;
2296         struct lov_user_md_v1   *v1;
2297         struct lov_user_md_v3   *v3;
2298         int     i;
2299         bool    cpu_endian;
2300         __u32   off, size;
2301         __u16   ent_count, stripe_count;
2302         ENTRY;
2303
2304         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2305         ent_count = lum->lcm_entry_count;
2306         if (!cpu_endian)
2307                 __swab16s(&ent_count);
2308
2309         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2310         __swab32s(&lum->lcm_magic);
2311         __swab32s(&lum->lcm_size);
2312         __swab32s(&lum->lcm_layout_gen);
2313         __swab16s(&lum->lcm_flags);
2314         __swab16s(&lum->lcm_entry_count);
2315         __swab16s(&lum->lcm_mirror_count);
2316         CLASSERT(offsetof(typeof(*lum), lcm_padding1) != 0);
2317         CLASSERT(offsetof(typeof(*lum), lcm_padding2) != 0);
2318
2319         for (i = 0; i < ent_count; i++) {
2320                 ent = &lum->lcm_entries[i];
2321                 off = ent->lcme_offset;
2322                 size = ent->lcme_size;
2323
2324                 if (!cpu_endian) {
2325                         __swab32s(&off);
2326                         __swab32s(&size);
2327                 }
2328                 __swab32s(&ent->lcme_id);
2329                 __swab32s(&ent->lcme_flags);
2330                 __swab64s(&ent->lcme_timestamp);
2331                 __swab64s(&ent->lcme_extent.e_start);
2332                 __swab64s(&ent->lcme_extent.e_end);
2333                 __swab32s(&ent->lcme_offset);
2334                 __swab32s(&ent->lcme_size);
2335                 __swab32s(&ent->lcme_layout_gen);
2336                 CLASSERT(offsetof(typeof(*ent), lcme_padding_1) != 0);
2337
2338                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2339                 stripe_count = v1->lmm_stripe_count;
2340                 if (!cpu_endian)
2341                         __swab16s(&stripe_count);
2342
2343                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2344                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2345                         lustre_swab_lov_user_md_v1(v1);
2346                         if (size > sizeof(*v1))
2347                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2348                                                                 stripe_count);
2349                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2350                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2351                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2352                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2353                         v3 = (struct lov_user_md_v3 *)v1;
2354                         lustre_swab_lov_user_md_v3(v3);
2355                         if (size > sizeof(*v3))
2356                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2357                                                                 stripe_count);
2358                 } else {
2359                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2360                 }
2361         }
2362 }
2363 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2364
2365 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2366                                      int stripe_count)
2367 {
2368         int i;
2369         ENTRY;
2370         for (i = 0; i < stripe_count; i++) {
2371                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2372                 __swab32s(&(lod[i].l_ost_gen));
2373                 __swab32s(&(lod[i].l_ost_idx));
2374         }
2375         EXIT;
2376 }
2377 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2378
2379 void lustre_swab_lov_user_md(struct lov_user_md *lum, size_t size)
2380 {
2381         struct lov_user_md_v1 *v1;
2382         struct lov_user_md_v3 *v3;
2383         struct lov_foreign_md *lfm;
2384         __u16 stripe_count;
2385         ENTRY;
2386
2387         CDEBUG(D_IOCTL, "swabbing lov_user_md\n");
2388         switch (lum->lmm_magic) {
2389         case __swab32(LOV_MAGIC_V1):
2390         case LOV_USER_MAGIC_V1:
2391         {
2392                 v1 = (struct lov_user_md_v1 *)lum;
2393                 stripe_count = v1->lmm_stripe_count;
2394
2395                 if (lum->lmm_magic != LOV_USER_MAGIC_V1)
2396                         __swab16s(&stripe_count);
2397
2398                 lustre_swab_lov_user_md_v1(v1);
2399                 if (size > sizeof(*v1))
2400                         lustre_swab_lov_user_md_objects(v1->lmm_objects,
2401                                                         stripe_count);
2402
2403                 break;
2404         }
2405         case __swab32(LOV_MAGIC_V3):
2406         case LOV_USER_MAGIC_V3:
2407         {
2408                 v3 = (struct lov_user_md_v3 *)lum;
2409                 stripe_count = v3->lmm_stripe_count;
2410
2411                 if (lum->lmm_magic != LOV_USER_MAGIC_V3)
2412                         __swab16s(&stripe_count);
2413
2414                 lustre_swab_lov_user_md_v3(v3);
2415                 if (size > sizeof(*v3))
2416                         lustre_swab_lov_user_md_objects(v3->lmm_objects,
2417                                                         stripe_count);
2418                 break;
2419         }
2420         case __swab32(LOV_USER_MAGIC_SPECIFIC):
2421         case LOV_USER_MAGIC_SPECIFIC:
2422         {
2423                 v3 = (struct lov_user_md_v3 *)lum;
2424                 stripe_count = v3->lmm_stripe_count;
2425
2426                 if (lum->lmm_magic != LOV_USER_MAGIC_SPECIFIC)
2427                         __swab16s(&stripe_count);
2428
2429                 lustre_swab_lov_user_md_v3(v3);
2430                 lustre_swab_lov_user_md_objects(v3->lmm_objects, stripe_count);
2431                 break;
2432         }
2433         case __swab32(LOV_MAGIC_COMP_V1):
2434         case LOV_USER_MAGIC_COMP_V1:
2435                 lustre_swab_lov_comp_md_v1((struct lov_comp_md_v1 *)lum);
2436                 break;
2437         case __swab32(LOV_MAGIC_FOREIGN):
2438         case LOV_USER_MAGIC_FOREIGN:
2439         {
2440                 lfm = (struct lov_foreign_md *)lum;
2441                 __swab32s(&lfm->lfm_magic);
2442                 __swab32s(&lfm->lfm_length);
2443                 __swab32s(&lfm->lfm_type);
2444                 __swab32s(&lfm->lfm_flags);
2445                 break;
2446         }
2447         default:
2448                 CDEBUG(D_IOCTL, "Invalid LOV magic %08x\n", lum->lmm_magic);
2449         }
2450 }
2451 EXPORT_SYMBOL(lustre_swab_lov_user_md);
2452
2453 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2454 {
2455         ENTRY;
2456         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2457         __swab32s(&lmm->lmm_magic);
2458         __swab32s(&lmm->lmm_pattern);
2459         lustre_swab_lmm_oi(&lmm->lmm_oi);
2460         __swab32s(&lmm->lmm_stripe_size);
2461         __swab16s(&lmm->lmm_stripe_count);
2462         __swab16s(&lmm->lmm_layout_gen);
2463         EXIT;
2464 }
2465 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2466
2467 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2468 {
2469         int  i;
2470
2471         for (i = 0; i < RES_NAME_SIZE; i++)
2472                 __swab64s (&id->name[i]);
2473 }
2474
2475 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2476 {
2477         /* the lock data is a union and the first two fields are always an
2478          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2479          * data the same way. */
2480         __swab64s(&d->l_extent.start);
2481         __swab64s(&d->l_extent.end);
2482         __swab64s(&d->l_extent.gid);
2483         __swab64s(&d->l_flock.lfw_owner);
2484         __swab32s(&d->l_flock.lfw_pid);
2485 }
2486
2487 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2488 {
2489         __swab64s(&i->opc);
2490 }
2491
2492 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2493 {
2494         __swab32s(&r->lr_type);
2495         CLASSERT(offsetof(typeof(*r), lr_pad) != 0);
2496         lustre_swab_ldlm_res_id(&r->lr_name);
2497 }
2498
2499 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2500 {
2501         lustre_swab_ldlm_resource_desc (&l->l_resource);
2502         __swab32s (&l->l_req_mode);
2503         __swab32s (&l->l_granted_mode);
2504         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2505 }
2506
2507 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2508 {
2509         __swab32s (&rq->lock_flags);
2510         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2511         __swab32s (&rq->lock_count);
2512         /* lock_handle[] opaque */
2513 }
2514
2515 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2516 {
2517         __swab32s (&r->lock_flags);
2518         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2519         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2520         /* lock_handle opaque */
2521         __swab64s (&r->lock_policy_res1);
2522         __swab64s (&r->lock_policy_res2);
2523 }
2524
2525 void lustre_swab_quota_body(struct quota_body *b)
2526 {
2527         lustre_swab_lu_fid(&b->qb_fid);
2528         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2529         __swab32s(&b->qb_flags);
2530         __swab64s(&b->qb_count);
2531         __swab64s(&b->qb_usage);
2532         __swab64s(&b->qb_slv_ver);
2533 }
2534
2535 /* Dump functions */
2536 void dump_ioo(struct obd_ioobj *ioo)
2537 {
2538         CDEBUG(D_RPCTRACE,
2539                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2540                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2541                ioo->ioo_bufcnt);
2542 }
2543
2544 void dump_rniobuf(struct niobuf_remote *nb)
2545 {
2546         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2547                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2548 }
2549
2550 void dump_obdo(struct obdo *oa)
2551 {
2552         u64 valid = oa->o_valid;
2553
2554         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2555         if (valid & OBD_MD_FLID)
2556                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2557         if (valid & OBD_MD_FLFID)
2558                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2559                        oa->o_parent_seq);
2560         if (valid & OBD_MD_FLSIZE)
2561                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2562         if (valid & OBD_MD_FLMTIME)
2563                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2564         if (valid & OBD_MD_FLATIME)
2565                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2566         if (valid & OBD_MD_FLCTIME)
2567                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2568         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2569                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2570         if (valid & OBD_MD_FLGRANT)
2571                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2572         if (valid & OBD_MD_FLBLKSZ)
2573                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2574         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2575                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2576                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2577                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2578         if (valid & OBD_MD_FLUID)
2579                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2580         if (valid & OBD_MD_FLUID)
2581                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2582         if (valid & OBD_MD_FLGID)
2583                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2584         if (valid & OBD_MD_FLGID)
2585                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2586         if (valid & OBD_MD_FLFLAGS)
2587                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2588         if (valid & OBD_MD_FLNLINK)
2589                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2590         else if (valid & OBD_MD_FLCKSUM)
2591                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2592                        oa->o_nlink);
2593         if (valid & OBD_MD_FLPARENT)
2594                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2595                        oa->o_parent_oid);
2596         if (valid & OBD_MD_FLFID) {
2597                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2598                        oa->o_stripe_idx);
2599                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2600                        oa->o_parent_ver);
2601         }
2602         if (valid & OBD_MD_FLHANDLE)
2603                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2604                        oa->o_handle.cookie);
2605 }
2606
2607 void dump_ost_body(struct ost_body *ob)
2608 {
2609         dump_obdo(&ob->oa);
2610 }
2611
2612 void dump_rcs(__u32 *rc)
2613 {
2614         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2615 }
2616
2617 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2618 {
2619         LASSERT(req->rq_reqmsg);
2620
2621         switch (req->rq_reqmsg->lm_magic) {
2622         case LUSTRE_MSG_MAGIC_V2:
2623                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2624         default:
2625                 CERROR("bad lustre msg magic: %#08X\n",
2626                        req->rq_reqmsg->lm_magic);
2627         }
2628         return 0;
2629 }
2630
2631 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2632 {
2633         if (unlikely(!req->rq_repmsg))
2634                 return 0;
2635
2636         switch (req->rq_repmsg->lm_magic) {
2637         case LUSTRE_MSG_MAGIC_V2:
2638                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2639         default:
2640                 /* uninitialized yet */
2641                 return 0;
2642         }
2643 }
2644
2645 void _debug_req(struct ptlrpc_request *req,
2646                 struct libcfs_debug_msg_data *msgdata, const char *fmt, ...)
2647 {
2648         bool req_ok = req->rq_reqmsg != NULL;
2649         bool rep_ok = false;
2650         lnet_nid_t nid = LNET_NID_ANY;
2651         struct va_format vaf;
2652         va_list args;
2653         int rep_flags = -1;
2654         int rep_status = -1;
2655
2656         spin_lock(&req->rq_early_free_lock);
2657         if (req->rq_repmsg)
2658                 rep_ok = true;
2659
2660         if (ptlrpc_req_need_swab(req)) {
2661                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2662                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2663         }
2664
2665         if (rep_ok) {
2666                 rep_flags = lustre_msg_get_flags(req->rq_repmsg);
2667                 rep_status = lustre_msg_get_status(req->rq_repmsg);
2668         }
2669         spin_unlock(&req->rq_early_free_lock);
2670
2671         if (req->rq_import && req->rq_import->imp_connection)
2672                 nid = req->rq_import->imp_connection->c_peer.nid;
2673         else if (req->rq_export && req->rq_export->exp_connection)
2674                 nid = req->rq_export->exp_connection->c_peer.nid;
2675
2676         va_start(args, fmt);
2677         vaf.fmt = fmt;
2678         vaf.va = &args;
2679         libcfs_debug_msg(msgdata,
2680                          "%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",
2681                          &vaf,
2682                          req, req->rq_xid, req->rq_transno,
2683                          req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2684                          req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2685                          req->rq_import ?
2686                          req->rq_import->imp_obd->obd_name :
2687                          req->rq_export ?
2688                          req->rq_export->exp_client_uuid.uuid :
2689                          "<?>",
2690                          libcfs_nid2str(nid),
2691                          req->rq_request_portal, req->rq_reply_portal,
2692                          req->rq_reqlen, req->rq_replen,
2693                          req->rq_early_count, (s64)req->rq_timedout,
2694                          (s64)req->rq_deadline,
2695                          atomic_read(&req->rq_refcount),
2696                          DEBUG_REQ_FLAGS(req),
2697                          req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2698                          rep_flags, req->rq_status, rep_status,
2699                          req_ok ? lustre_msg_get_jobid(req->rq_reqmsg) ?: ""
2700                                 : "");
2701         va_end(args);
2702 }
2703 EXPORT_SYMBOL(_debug_req);
2704
2705 void lustre_swab_lustre_capa(struct lustre_capa *c)
2706 {
2707         lustre_swab_lu_fid(&c->lc_fid);
2708         __swab64s (&c->lc_opc);
2709         __swab64s (&c->lc_uid);
2710         __swab64s (&c->lc_gid);
2711         __swab32s (&c->lc_flags);
2712         __swab32s (&c->lc_keyid);
2713         __swab32s (&c->lc_timeout);
2714         __swab32s (&c->lc_expiry);
2715 }
2716
2717 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2718 {
2719         __swab64s (&k->lk_seq);
2720         __swab32s (&k->lk_keyid);
2721         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2722 }
2723
2724 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2725 {
2726         __swab32s(&state->hus_states);
2727         __swab32s(&state->hus_archive_id);
2728 }
2729
2730 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2731 {
2732         __swab32s(&hss->hss_valid);
2733         __swab64s(&hss->hss_setmask);
2734         __swab64s(&hss->hss_clearmask);
2735         __swab32s(&hss->hss_archive_id);
2736 }
2737
2738 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2739 {
2740         __swab64s(&extent->offset);
2741         __swab64s(&extent->length);
2742 }
2743
2744 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2745 {
2746         __swab32s(&action->hca_state);
2747         __swab32s(&action->hca_action);
2748         lustre_swab_hsm_extent(&action->hca_location);
2749 }
2750
2751 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2752 {
2753         lustre_swab_lu_fid(&hui->hui_fid);
2754         lustre_swab_hsm_extent(&hui->hui_extent);
2755 }
2756
2757 void lustre_swab_lu_extent(struct lu_extent *le)
2758 {
2759         __swab64s(&le->e_start);
2760         __swab64s(&le->e_end);
2761 }
2762
2763 void lustre_swab_layout_intent(struct layout_intent *li)
2764 {
2765         __swab32s(&li->li_opc);
2766         __swab32s(&li->li_flags);
2767         lustre_swab_lu_extent(&li->li_extent);
2768 }
2769
2770 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2771 {
2772         lustre_swab_lu_fid(&hpk->hpk_fid);
2773         __swab64s(&hpk->hpk_cookie);
2774         __swab64s(&hpk->hpk_extent.offset);
2775         __swab64s(&hpk->hpk_extent.length);
2776         __swab16s(&hpk->hpk_flags);
2777         __swab16s(&hpk->hpk_errval);
2778 }
2779
2780 void lustre_swab_hsm_request(struct hsm_request *hr)
2781 {
2782         __swab32s(&hr->hr_action);
2783         __swab32s(&hr->hr_archive_id);
2784         __swab64s(&hr->hr_flags);
2785         __swab32s(&hr->hr_itemcount);
2786         __swab32s(&hr->hr_data_len);
2787 }
2788
2789 void lustre_swab_object_update(struct object_update *ou)
2790 {
2791         struct object_update_param *param;
2792         size_t  i;
2793
2794         __swab16s(&ou->ou_type);
2795         __swab16s(&ou->ou_params_count);
2796         __swab32s(&ou->ou_result_size);
2797         __swab32s(&ou->ou_flags);
2798         __swab32s(&ou->ou_padding1);
2799         __swab64s(&ou->ou_batchid);
2800         lustre_swab_lu_fid(&ou->ou_fid);
2801         param = &ou->ou_params[0];
2802         for (i = 0; i < ou->ou_params_count; i++) {
2803                 __swab16s(&param->oup_len);
2804                 __swab16s(&param->oup_padding);
2805                 __swab32s(&param->oup_padding2);
2806                 param = (struct object_update_param *)((char *)param +
2807                          object_update_param_size(param));
2808         }
2809 }
2810
2811 void lustre_swab_object_update_request(struct object_update_request *our)
2812 {
2813         size_t i;
2814         __swab32s(&our->ourq_magic);
2815         __swab16s(&our->ourq_count);
2816         __swab16s(&our->ourq_padding);
2817         for (i = 0; i < our->ourq_count; i++) {
2818                 struct object_update *ou;
2819
2820                 ou = object_update_request_get(our, i, NULL);
2821                 if (ou == NULL)
2822                         return;
2823                 lustre_swab_object_update(ou);
2824         }
2825 }
2826
2827 void lustre_swab_object_update_result(struct object_update_result *our)
2828 {
2829         __swab32s(&our->our_rc);
2830         __swab16s(&our->our_datalen);
2831         __swab16s(&our->our_padding);
2832 }
2833
2834 void lustre_swab_object_update_reply(struct object_update_reply *our)
2835 {
2836         size_t i;
2837
2838         __swab32s(&our->ourp_magic);
2839         __swab16s(&our->ourp_count);
2840         __swab16s(&our->ourp_padding);
2841         for (i = 0; i < our->ourp_count; i++) {
2842                 struct object_update_result *ourp;
2843
2844                 __swab16s(&our->ourp_lens[i]);
2845                 ourp = object_update_result_get(our, i, NULL);
2846                 if (ourp == NULL)
2847                         return;
2848                 lustre_swab_object_update_result(ourp);
2849         }
2850 }
2851
2852 void lustre_swab_out_update_header(struct out_update_header *ouh)
2853 {
2854         __swab32s(&ouh->ouh_magic);
2855         __swab32s(&ouh->ouh_count);
2856         __swab32s(&ouh->ouh_inline_length);
2857         __swab32s(&ouh->ouh_reply_size);
2858 }
2859 EXPORT_SYMBOL(lustre_swab_out_update_header);
2860
2861 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2862 {
2863         __swab32s(&oub->oub_size);
2864         __swab32s(&oub->oub_padding);
2865 }
2866 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2867
2868 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2869 {
2870         __swab64s(&msl->msl_flags);
2871 }
2872
2873 void lustre_swab_close_data(struct close_data *cd)
2874 {
2875         lustre_swab_lu_fid(&cd->cd_fid);
2876         __swab64s(&cd->cd_data_version);
2877 }
2878
2879 void lustre_swab_close_data_resync_done(struct close_data_resync_done *resync)
2880 {
2881         int i;
2882
2883         __swab32s(&resync->resync_count);
2884         /* after swab, resync_count must in CPU endian */
2885         if (resync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
2886                 for (i = 0; i < resync->resync_count; i++)
2887                         __swab32s(&resync->resync_ids_inline[i]);
2888         }
2889 }
2890 EXPORT_SYMBOL(lustre_swab_close_data_resync_done);
2891
2892 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2893 {
2894         __swab32s(&lr->lr_event);
2895         __swab32s(&lr->lr_index);
2896         __swab32s(&lr->lr_flags);
2897         __swab32s(&lr->lr_valid);
2898         __swab32s(&lr->lr_speed);
2899         __swab16s(&lr->lr_version);
2900         __swab16s(&lr->lr_active);
2901         __swab16s(&lr->lr_param);
2902         __swab16s(&lr->lr_async_windows);
2903         __swab32s(&lr->lr_flags);
2904         lustre_swab_lu_fid(&lr->lr_fid);
2905         lustre_swab_lu_fid(&lr->lr_fid2);
2906         __swab32s(&lr->lr_comp_id);
2907         CLASSERT(offsetof(typeof(*lr), lr_padding_0) != 0);
2908         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2909         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2910         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2911 }
2912
2913 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2914 {
2915         __swab32s(&lr->lr_status);
2916         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2917         __swab64s(&lr->lr_repaired);
2918 }
2919
2920 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
2921 {
2922         lustre_swab_lu_fid(&rec->lor_fid);
2923         __swab32s(&rec->lor_uid);
2924         __swab32s(&rec->lor_gid);
2925 }
2926
2927 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2928 {
2929         lustre_swab_lu_fid(&ent->loe_key);
2930         lustre_swab_orphan_rec(&ent->loe_rec);
2931 }
2932 EXPORT_SYMBOL(lustre_swab_orphan_ent);
2933
2934 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
2935 {
2936         lustre_swab_lu_fid(&ent->loe_key);
2937         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2938         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2939         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding) != 0);
2940 }
2941 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
2942
2943 void lustre_swab_orphan_ent_v3(struct lu_orphan_ent_v3 *ent)
2944 {
2945         lustre_swab_lu_fid(&ent->loe_key);
2946         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2947         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2948         __swab32s(&ent->loe_rec.lor_layout_version);
2949         __swab32s(&ent->loe_rec.lor_range);
2950         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding_1) != 0);
2951         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding_2) != 0);
2952 }
2953 EXPORT_SYMBOL(lustre_swab_orphan_ent_v3);
2954
2955 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
2956 {
2957         __swab16s(&ladvise->lla_advice);
2958         __swab16s(&ladvise->lla_value1);
2959         __swab32s(&ladvise->lla_value2);
2960         __swab64s(&ladvise->lla_start);
2961         __swab64s(&ladvise->lla_end);
2962         __swab32s(&ladvise->lla_value3);
2963         __swab32s(&ladvise->lla_value4);
2964 }
2965 EXPORT_SYMBOL(lustre_swab_ladvise);
2966
2967 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
2968 {
2969         __swab32s(&ladvise_hdr->lah_magic);
2970         __swab32s(&ladvise_hdr->lah_count);
2971         __swab64s(&ladvise_hdr->lah_flags);
2972         __swab32s(&ladvise_hdr->lah_value1);
2973         __swab32s(&ladvise_hdr->lah_value2);
2974         __swab64s(&ladvise_hdr->lah_value3);
2975 }
2976 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);