lustre/ptlrpc/pack_generic.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/ptlrpc/pack_generic.c
  33  *
  34  * (Un)packing of OST requests
  35  *
  36  * Author: Peter J. Braam <braam@clusterfs.com>
  37  * Author: Phil Schwan <phil@clusterfs.com>
  38  * Author: Eric Barton <eeb@clusterfs.com>
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_RPC
  42
  43 #include <libcfs/libcfs.h>
  44
  45 #include <llog_swab.h>
  46 #include <lustre_net.h>
  47 #include <lustre_swab.h>
  48 #include <obd_cksum.h>
  49 #include <obd_class.h>
  50 #include <obd_support.h>
  51 #include <obj_update.h>
  52
  53 #include "ptlrpc_internal.h"
  54
  55 static inline __u32 lustre_msg_hdr_size_v2(__u32 count)
  56 {
  57         return cfs_size_round(offsetof(struct lustre_msg_v2,
  58                                        lm_buflens[count]));
  59 }
  60
  61 __u32 lustre_msg_hdr_size(__u32 magic, __u32 count)
  62 {
  63         LASSERT(count > 0);
  64
  65         switch (magic) {
  66         case LUSTRE_MSG_MAGIC_V2:
  67                 return lustre_msg_hdr_size_v2(count);
  68         default:
  69                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  70                 return 0;
  71         }
  72 }
  73
  74 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  75                             __u32 index)
  76 {
  77         if (inout)
  78                 lustre_set_req_swabbed(req, index);
  79         else
  80                 lustre_set_rep_swabbed(req, index);
  81 }
  82
  83 bool ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  84                           __u32 index)
  85 {
  86         if (inout)
  87                 return (ptlrpc_req_need_swab(req) &&
  88                         !lustre_req_swabbed(req, index));
  89
  90         return (ptlrpc_rep_need_swab(req) && !lustre_rep_swabbed(req, index));
  91 }
  92
  93 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  94                                               enum lustre_msg_version version)
  95 {
  96         enum lustre_msg_version ver = lustre_msg_get_version(msg);
  97
  98         return (ver & LUSTRE_VERSION_MASK) != version;
  99 }
 100
 101 int lustre_msg_check_version(struct lustre_msg *msg,
 102                              enum lustre_msg_version version)
 103 {
 104 #define LUSTRE_MSG_MAGIC_V1 0x0BD00BD0
 105         switch (msg->lm_magic) {
 106         case LUSTRE_MSG_MAGIC_V1:
 107                 CERROR("msg v1 not supported - please upgrade you system\n");
 108                 return -EINVAL;
 109         case LUSTRE_MSG_MAGIC_V2:
 110                 return lustre_msg_check_version_v2(msg, version);
 111         default:
 112                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 113                 return -EPROTO;
 114         }
 115 #undef LUSTRE_MSG_MAGIC_V1
 116 }
 117
 118 /* early reply size */
 119 __u32 lustre_msg_early_size()
 120 {
 121         __u32 pblen = sizeof(struct ptlrpc_body);
 122
 123         return lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 124 }
 125 EXPORT_SYMBOL(lustre_msg_early_size);
 126
 127 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
 128 {
 129         __u32 size;
 130         int i;
 131
 132         LASSERT(count > 0);
 133         size = lustre_msg_hdr_size_v2(count);
 134         for (i = 0; i < count; i++)
 135                 size += cfs_size_round(lengths[i]);
 136
 137         return size;
 138 }
 139 EXPORT_SYMBOL(lustre_msg_size_v2);
 140
 141 /*
 142  * This returns the size of the buffer that is required to hold a lustre_msg
 143  * with the given sub-buffer lengths.
 144  * NOTE: this should only be used for NEW requests, and should always be
 145  *       in the form of a v2 request.  If this is a connection to a v1
 146  *       target then the first buffer will be stripped because the ptlrpc
 147  *       data is part of the lustre_msg_v1 header. b=14043
 148  */
 149 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 150 {
 151         __u32 size[] = { sizeof(struct ptlrpc_body) };
 152
 153         if (!lens) {
 154                 LASSERT(count == 1);
 155                 lens = size;
 156         }
 157
 158         LASSERT(count > 0);
 159         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 160
 161         switch (magic) {
 162         case LUSTRE_MSG_MAGIC_V2:
 163                 return lustre_msg_size_v2(count, lens);
 164         default:
 165                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 166                 return 0;
 167         }
 168 }
 169
 170 /*
 171  * This is used to determine the size of a buffer that was already packed
 172  * and will correctly handle the different message formats.
 173  */
 174 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 175 {
 176         switch (msg->lm_magic) {
 177         case LUSTRE_MSG_MAGIC_V2:
 178                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 179         default:
 180                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 181                 return 0;
 182         }
 183 }
 184 EXPORT_SYMBOL(lustre_packed_msg_size);
 185
 186 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 187                         char **bufs)
 188 {
 189         char *ptr;
 190         int i;
 191
 192         LASSERT(count > 0);
 193
 194         msg->lm_bufcount = count;
 195         /* XXX: lm_secflvr uninitialized here */
 196         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 197
 198         for (i = 0; i < count; i++)
 199                 msg->lm_buflens[i] = lens[i];
 200
 201         if (bufs == NULL)
 202                 return;
 203
 204         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 205         for (i = 0; i < count; i++) {
 206                 char *tmp = bufs[i];
 207
 208                 if (tmp)
 209                         memcpy(ptr, tmp, lens[i]);
 210                 ptr += cfs_size_round(lens[i]);
 211         }
 212 }
 213 EXPORT_SYMBOL(lustre_init_msg_v2);
 214
 215 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 216                                   int count, __u32 *lens, char **bufs)
 217 {
 218         int reqlen, rc;
 219
 220         reqlen = lustre_msg_size_v2(count, lens);
 221
 222         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 223         if (rc)
 224                 return rc;
 225
 226         req->rq_reqlen = reqlen;
 227
 228         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 229         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 230         return 0;
 231 }
 232
 233 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 234                         __u32 *lens, char **bufs)
 235 {
 236         __u32 size[] = { sizeof(struct ptlrpc_body) };
 237
 238         if (!lens) {
 239                 LASSERT(count == 1);
 240                 lens = size;
 241         }
 242
 243         LASSERT(count > 0);
 244         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 245
 246         /* only use new format, we don't need to be compatible with 1.4 */
 247         magic = LUSTRE_MSG_MAGIC_V2;
 248
 249         switch (magic) {
 250         case LUSTRE_MSG_MAGIC_V2:
 251                 return lustre_pack_request_v2(req, count, lens, bufs);
 252         default:
 253                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 254                 return -EINVAL;
 255         }
 256 }
 257
 258 #if RS_DEBUG
 259 struct list_head ptlrpc_rs_debug_lru =
 260         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 261 spinlock_t ptlrpc_rs_debug_lock;
 262
 263 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 264 do {                                                                    \
 265         spin_lock(&ptlrpc_rs_debug_lock);                               \
 266         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 267         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 268 } while (0)
 269
 270 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 271 do {                                                                    \
 272         spin_lock(&ptlrpc_rs_debug_lock);                               \
 273         list_del(&(rs)->rs_debug_list);                         \
 274         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 275 } while (0)
 276 #else
 277 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 278 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 279 #endif
 280
 281 struct ptlrpc_reply_state *
 282 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 283 {
 284         struct ptlrpc_reply_state *rs = NULL;
 285
 286         spin_lock(&svcpt->scp_rep_lock);
 287
 288         /* See if we have anything in a pool, and wait if nothing */
 289         while (list_empty(&svcpt->scp_rep_idle)) {
 290                 int                     rc;
 291
 292                 spin_unlock(&svcpt->scp_rep_lock);
 293                 /* If we cannot get anything for some long time, we better
 294                  * bail out instead of waiting infinitely */
 295                 rc = wait_event_idle_timeout(svcpt->scp_rep_waitq,
 296                                              !list_empty(&svcpt->scp_rep_idle),
 297                                              cfs_time_seconds(10));
 298                 if (rc <= 0)
 299                         goto out;
 300                 spin_lock(&svcpt->scp_rep_lock);
 301         }
 302
 303         rs = list_entry(svcpt->scp_rep_idle.next,
 304                             struct ptlrpc_reply_state, rs_list);
 305         list_del(&rs->rs_list);
 306
 307         spin_unlock(&svcpt->scp_rep_lock);
 308
 309         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 310         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 311         rs->rs_svcpt = svcpt;
 312         rs->rs_prealloc = 1;
 313 out:
 314         return rs;
 315 }
 316
 317 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 318 {
 319         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 320
 321         spin_lock(&svcpt->scp_rep_lock);
 322         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 323         spin_unlock(&svcpt->scp_rep_lock);
 324         wake_up(&svcpt->scp_rep_waitq);
 325 }
 326
 327 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 328                          __u32 *lens, char **bufs, int flags)
 329 {
 330         struct ptlrpc_reply_state *rs;
 331         int msg_len, rc;
 332         ENTRY;
 333
 334         LASSERT(req->rq_reply_state == NULL);
 335         LASSERT(count > 0);
 336
 337         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 338                 spin_lock(&req->rq_lock);
 339                 req->rq_packed_final = 1;
 340                 spin_unlock(&req->rq_lock);
 341         }
 342
 343         msg_len = lustre_msg_size_v2(count, lens);
 344         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 345         if (rc)
 346                 RETURN(rc);
 347
 348         rs = req->rq_reply_state;
 349         atomic_set(&rs->rs_refcount, 1); /* 1 ref for rq_reply_state */
 350         rs->rs_cb_id.cbid_fn = reply_out_callback;
 351         rs->rs_cb_id.cbid_arg = rs;
 352         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 353         INIT_LIST_HEAD(&rs->rs_exp_list);
 354         INIT_LIST_HEAD(&rs->rs_obd_list);
 355         INIT_LIST_HEAD(&rs->rs_list);
 356         spin_lock_init(&rs->rs_lock);
 357
 358         req->rq_replen = msg_len;
 359         req->rq_reply_state = rs;
 360         req->rq_repmsg = rs->rs_msg;
 361
 362         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 363         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 364
 365         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 366
 367         RETURN(0);
 368 }
 369 EXPORT_SYMBOL(lustre_pack_reply_v2);
 370
 371 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 372                             char **bufs, int flags)
 373 {
 374         int rc = 0;
 375         __u32 size[] = { sizeof(struct ptlrpc_body) };
 376
 377         if (!lens) {
 378                 LASSERT(count == 1);
 379                 lens = size;
 380         }
 381
 382         LASSERT(count > 0);
 383         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 384
 385         switch (req->rq_reqmsg->lm_magic) {
 386         case LUSTRE_MSG_MAGIC_V2:
 387                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 388                 break;
 389         default:
 390                 LASSERTF(0, "incorrect message magic: %08x\n",
 391                          req->rq_reqmsg->lm_magic);
 392                 rc = -EINVAL;
 393         }
 394         if (rc != 0)
 395                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 396                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 397         return rc;
 398 }
 399
 400 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 401                       char **bufs)
 402 {
 403         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 404 }
 405 EXPORT_SYMBOL(lustre_pack_reply);
 406
 407 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
 408 {
 409         __u32 i, offset, buflen, bufcount;
 410
 411         LASSERT(m != NULL);
 412         LASSERT(m->lm_bufcount > 0);
 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 static int lustre_grow_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 509                               unsigned int newlen)
 510 {
 511         char *tail = NULL, *newpos;
 512         int tail_len = 0, n;
 513
 514         LASSERT(msg);
 515         LASSERT(msg->lm_bufcount > segment);
 516         LASSERT(msg->lm_buflens[segment] <= newlen);
 517
 518         if (msg->lm_buflens[segment] == newlen)
 519                 goto out;
 520
 521         if (msg->lm_bufcount > segment + 1) {
 522                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 523                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 524                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 525         }
 526
 527         msg->lm_buflens[segment] = newlen;
 528
 529         if (tail && tail_len) {
 530                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 531                 memmove(newpos, tail, tail_len);
 532         }
 533 out:
 534         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 535 }
 536
 537 /*
 538  * for @msg, grow @segment to size @newlen.
 539  * Always move higher buffer forward.
 540  *
 541  * return new msg size after growing.
 542  *
 543  * CAUTION:
 544  * - caller must make sure there is enough space in allocated message buffer
 545  * - caller should NOT keep pointers to msg buffers which higher than @segment
 546  *   after call shrink.
 547  */
 548 int lustre_grow_msg(struct lustre_msg *msg, int segment, unsigned int newlen)
 549 {
 550         switch (msg->lm_magic) {
 551         case LUSTRE_MSG_MAGIC_V2:
 552                 return lustre_grow_msg_v2(msg, segment, newlen);
 553         default:
 554                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 555         }
 556 }
 557 EXPORT_SYMBOL(lustre_grow_msg);
 558
 559 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 560 {
 561         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 562
 563         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 564         LASSERT(!rs->rs_difficult || rs->rs_handled);
 565         LASSERT(!rs->rs_on_net);
 566         LASSERT(!rs->rs_scheduled);
 567         LASSERT(rs->rs_export == NULL);
 568         LASSERT(rs->rs_nlocks == 0);
 569         LASSERT(list_empty(&rs->rs_exp_list));
 570         LASSERT(list_empty(&rs->rs_obd_list));
 571
 572         sptlrpc_svc_free_rs(rs);
 573 }
 574
 575 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 576 {
 577         int swabbed, required_len, i, buflen;
 578
 579         /* Now we know the sender speaks my language. */
 580         required_len = lustre_msg_hdr_size_v2(0);
 581         if (len < required_len) {
 582                 /* can't even look inside the message */
 583                 CERROR("message length %d too small for lustre_msg\n", len);
 584                 return -EINVAL;
 585         }
 586
 587         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 588
 589         if (swabbed) {
 590                 __swab32s(&m->lm_magic);
 591                 __swab32s(&m->lm_bufcount);
 592                 __swab32s(&m->lm_secflvr);
 593                 __swab32s(&m->lm_repsize);
 594                 __swab32s(&m->lm_cksum);
 595                 __swab32s(&m->lm_flags);
 596                 BUILD_BUG_ON(offsetof(typeof(*m), lm_padding_2) == 0);
 597                 BUILD_BUG_ON(offsetof(typeof(*m), lm_padding_3) == 0);
 598         }
 599
 600         if (m->lm_bufcount == 0 || m->lm_bufcount > PTLRPC_MAX_BUFCOUNT) {
 601                 CERROR("message bufcount %d is not valid\n", m->lm_bufcount);
 602                 return -EINVAL;
 603         }
 604         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 605         if (len < required_len) {
 606                 /* didn't receive all the buffer lengths */
 607                 CERROR("message length %d too small for %d buflens\n",
 608                        len, m->lm_bufcount);
 609                 return -EINVAL;
 610         }
 611
 612         for (i = 0; i < m->lm_bufcount; i++) {
 613                 if (swabbed)
 614                         __swab32s(&m->lm_buflens[i]);
 615                 buflen = cfs_size_round(m->lm_buflens[i]);
 616                 if (buflen < 0 || buflen > PTLRPC_MAX_BUFLEN) {
 617                         CERROR("buffer %d length %d is not valid\n", i, buflen);
 618                         return -EINVAL;
 619                 }
 620                 required_len += buflen;
 621         }
 622         if (len < required_len || required_len > PTLRPC_MAX_BUFLEN) {
 623                 CERROR("len: %d, required_len %d, bufcount: %d\n",
 624                        len, required_len, m->lm_bufcount);
 625                 for (i = 0; i < m->lm_bufcount; i++)
 626                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 627                 return -EINVAL;
 628         }
 629
 630         return swabbed;
 631 }
 632
 633 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 634 {
 635         int required_len, rc;
 636
 637         ENTRY;
 638         /*
 639          * We can provide a slightly better error log, if we check the
 640          * message magic and version first.  In the future, struct
 641          * lustre_msg may grow, and we'd like to log a version mismatch,
 642          * rather than a short message.
 643          */
 644         required_len = offsetof(struct lustre_msg, lm_magic) +
 645                                 sizeof(m->lm_magic);
 646         if (len < required_len) {
 647                 /* can't even look inside the message */
 648                 CERROR("message length %d too small for magic/version check\n",
 649                        len);
 650                 RETURN(-EINVAL);
 651         }
 652
 653         rc = lustre_unpack_msg_v2(m, len);
 654
 655         RETURN(rc);
 656 }
 657 EXPORT_SYMBOL(__lustre_unpack_msg);
 658
 659 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 660 {
 661         int rc;
 662
 663         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 664         if (rc == 1) {
 665                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 666                 rc = 0;
 667         }
 668         return rc;
 669 }
 670
 671 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 672 {
 673         int rc;
 674
 675         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 676         if (rc == 1) {
 677                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 678                 rc = 0;
 679         }
 680         return rc;
 681 }
 682
 683 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 684                                                const int inout, int offset)
 685 {
 686         struct ptlrpc_body *pb;
 687         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 688
 689         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 690         if (!pb) {
 691                 CERROR("error unpacking ptlrpc body\n");
 692                 return -EFAULT;
 693         }
 694         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 695                 lustre_swab_ptlrpc_body(pb);
 696                 ptlrpc_buf_set_swabbed(req, inout, offset);
 697         }
 698
 699         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 700                 CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 701                 return -EINVAL;
 702         }
 703
 704         if (!inout)
 705                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 706
 707         return 0;
 708 }
 709
 710 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 711 {
 712         switch (req->rq_reqmsg->lm_magic) {
 713         case LUSTRE_MSG_MAGIC_V2:
 714                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 715         default:
 716                 CERROR("bad lustre msg magic: %08x\n",
 717                        req->rq_reqmsg->lm_magic);
 718                 return -EINVAL;
 719         }
 720 }
 721
 722 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 723 {
 724         switch (req->rq_repmsg->lm_magic) {
 725         case LUSTRE_MSG_MAGIC_V2:
 726                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 727         default:
 728                 CERROR("bad lustre msg magic: %08x\n",
 729                        req->rq_repmsg->lm_magic);
 730                 return -EINVAL;
 731         }
 732 }
 733
 734 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 735 {
 736         if (n >= m->lm_bufcount)
 737                 return 0;
 738
 739         return m->lm_buflens[n];
 740 }
 741
 742 /**
 743  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 744  * \param m lustre_msg (request or reply) to look at
 745  * \param n message index (base 0)
 746  *
 747  * returns zero for non-existent message indices
 748  */
 749 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 750 {
 751         switch (m->lm_magic) {
 752         case LUSTRE_MSG_MAGIC_V2:
 753                 return lustre_msg_buflen_v2(m, n);
 754         default:
 755                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 756                 return 0;
 757         }
 758 }
 759 EXPORT_SYMBOL(lustre_msg_buflen);
 760
 761 static inline void
 762 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 763 {
 764         if (n >= m->lm_bufcount)
 765                 LBUG();
 766
 767         m->lm_buflens[n] = len;
 768 }
 769
 770 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 771 {
 772         switch (m->lm_magic) {
 773         case LUSTRE_MSG_MAGIC_V2:
 774                 lustre_msg_set_buflen_v2(m, n, len);
 775                 return;
 776         default:
 777                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 778         }
 779 }
 780
 781 /*
 782  * NB return the bufcount for lustre_msg_v2 format, so if message is packed
 783  * in V1 format, the result is one bigger. (add struct ptlrpc_body).
 784  */
 785 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 786 {
 787         switch (m->lm_magic) {
 788         case LUSTRE_MSG_MAGIC_V2:
 789                 return m->lm_bufcount;
 790         default:
 791                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 792                 return 0;
 793         }
 794 }
 795
 796 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 797 {
 798         /* max_len == 0 means the string should fill the buffer */
 799         char *str;
 800         __u32 slen, blen;
 801
 802         switch (m->lm_magic) {
 803         case LUSTRE_MSG_MAGIC_V2:
 804                 str = lustre_msg_buf_v2(m, index, 0);
 805                 blen = lustre_msg_buflen_v2(m, index);
 806                 break;
 807         default:
 808                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 809         }
 810
 811         if (str == NULL) {
 812                 CERROR("can't unpack string in msg %p buffer[%d]\n", m, index);
 813                 return NULL;
 814         }
 815
 816         slen = strnlen(str, blen);
 817
 818         if (slen == blen) { /* not NULL terminated */
 819                 CERROR("can't unpack non-NULL terminated string in msg %p buffer[%d] len %d\n",
 820                        m, index, blen);
 821                 return NULL;
 822         }
 823         if (blen > PTLRPC_MAX_BUFLEN) {
 824                 CERROR("buffer length of msg %p buffer[%d] is invalid(%d)\n",
 825                        m, index, blen);
 826                 return NULL;
 827         }
 828
 829         if (max_len == 0) {
 830                 if (slen != blen - 1) {
 831                         CERROR("can't unpack short string in msg %p buffer[%d] len %d: strlen %d\n",
 832                                m, index, blen, slen);
 833                         return NULL;
 834                 }
 835         } else if (slen > max_len) {
 836                 CERROR("can't unpack oversized string in msg %p buffer[%d] len %d strlen %d: max %d expected\n",
 837                        m, index, blen, slen, max_len);
 838                 return NULL;
 839         }
 840
 841         return str;
 842 }
 843
 844 /* Wrap up the normal fixed length cases */
 845 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 846                                       __u32 min_size, void *swabber)
 847 {
 848         void *ptr = NULL;
 849
 850         LASSERT(msg != NULL);
 851         switch (msg->lm_magic) {
 852         case LUSTRE_MSG_MAGIC_V2:
 853                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 854                 break;
 855         default:
 856                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 857         }
 858
 859         if (ptr != NULL && swabber != NULL)
 860                 ((void (*)(void *))swabber)(ptr);
 861
 862         return ptr;
 863 }
 864
 865 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 866 {
 867         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 868                                  sizeof(struct ptlrpc_body_v2));
 869 }
 870
 871 enum lustre_msghdr lustre_msghdr_get_flags(struct lustre_msg *msg)
 872 {
 873         switch (msg->lm_magic) {
 874         case LUSTRE_MSG_MAGIC_V2:
 875                 /* already in host endian */
 876                 return msg->lm_flags;
 877         default:
 878                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 879                 return 0;
 880         }
 881 }
 882 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 883
 884 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 885 {
 886         switch (msg->lm_magic) {
 887         case LUSTRE_MSG_MAGIC_V2:
 888                 msg->lm_flags = flags;
 889                 return;
 890         default:
 891                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 892         }
 893 }
 894
 895 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 896 {
 897         switch (msg->lm_magic) {
 898         case LUSTRE_MSG_MAGIC_V2: {
 899                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 900                 if (pb != NULL)
 901                         return pb->pb_flags;
 902
 903                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 904         }
 905         /* fallthrough */
 906         default:
 907                 /*
 908                  * flags might be printed in debug code while message
 909                  * uninitialized
 910                  */
 911                 return 0;
 912         }
 913 }
 914 EXPORT_SYMBOL(lustre_msg_get_flags);
 915
 916 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 917 {
 918         switch (msg->lm_magic) {
 919         case LUSTRE_MSG_MAGIC_V2: {
 920                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 921                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 922                 pb->pb_flags |= flags;
 923                 return;
 924         }
 925         default:
 926                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 927         }
 928 }
 929 EXPORT_SYMBOL(lustre_msg_add_flags);
 930
 931 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
 932 {
 933         switch (msg->lm_magic) {
 934         case LUSTRE_MSG_MAGIC_V2: {
 935                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 936                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 937                 pb->pb_flags = flags;
 938                 return;
 939         }
 940         default:
 941                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 942         }
 943 }
 944
 945 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 946 {
 947         switch (msg->lm_magic) {
 948         case LUSTRE_MSG_MAGIC_V2: {
 949                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 950                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 951                 pb->pb_flags &= ~flags;
 952
 953                 return;
 954         }
 955         default:
 956                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 957         }
 958 }
 959 EXPORT_SYMBOL(lustre_msg_clear_flags);
 960
 961 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 962 {
 963         switch (msg->lm_magic) {
 964         case LUSTRE_MSG_MAGIC_V2: {
 965                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 966                 if (pb != NULL)
 967                         return pb->pb_op_flags;
 968
 969                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 970         }
 971         /* fallthrough */
 972         default:
 973                 return 0;
 974         }
 975 }
 976
 977 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 978 {
 979         switch (msg->lm_magic) {
 980         case LUSTRE_MSG_MAGIC_V2: {
 981                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 982                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 983                 pb->pb_op_flags |= flags;
 984                 return;
 985         }
 986         default:
 987                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 988         }
 989 }
 990 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 991
 992 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 993 {
 994         switch (msg->lm_magic) {
 995         case LUSTRE_MSG_MAGIC_V2: {
 996                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 997                 if (pb == NULL) {
 998                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 999                         return NULL;
1000                 }
1001                 return &pb->pb_handle;
1002         }
1003         default:
1004                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1005                 return NULL;
1006         }
1007 }
1008
1009 __u32 lustre_msg_get_type(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 PTL_RPC_MSG_ERR;
1017                 }
1018                 return pb->pb_type;
1019         }
1020         default:
1021                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1022                 return PTL_RPC_MSG_ERR;
1023         }
1024 }
1025 EXPORT_SYMBOL(lustre_msg_get_type);
1026
1027 enum lustre_msg_version lustre_msg_get_version(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 == NULL) {
1033                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1034                         return 0;
1035                 }
1036                 return pb->pb_version;
1037         }
1038         default:
1039                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1040                 return 0;
1041         }
1042 }
1043
1044 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
1045 {
1046         switch (msg->lm_magic) {
1047         case LUSTRE_MSG_MAGIC_V2: {
1048                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1049                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1050                 pb->pb_version |= version;
1051                 return;
1052         }
1053         default:
1054                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1055         }
1056 }
1057
1058 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1059 {
1060         switch (msg->lm_magic) {
1061         case LUSTRE_MSG_MAGIC_V2: {
1062                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1063                 if (pb == NULL) {
1064                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1065                         return 0;
1066                 }
1067                 return pb->pb_opc;
1068         }
1069         default:
1070                 CERROR("incorrect message magic: %08x (msg:%p)\n",
1071                        msg->lm_magic, msg);
1072                 return 0;
1073         }
1074 }
1075 EXPORT_SYMBOL(lustre_msg_get_opc);
1076
1077 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1078 {
1079         switch (msg->lm_magic) {
1080         case LUSTRE_MSG_MAGIC_V2: {
1081                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1082                 if (pb == NULL) {
1083                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1084                         return 0;
1085                 }
1086                 return pb->pb_last_xid;
1087         }
1088         default:
1089                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1090                 return 0;
1091         }
1092 }
1093 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1094
1095 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1096 {
1097         switch (msg->lm_magic) {
1098         case LUSTRE_MSG_MAGIC_V2: {
1099                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1100                 if (!pb) {
1101                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1102                         return 0;
1103                 }
1104                 return pb->pb_tag;
1105         }
1106         default:
1107                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1108                 return 0;
1109         }
1110 }
1111 EXPORT_SYMBOL(lustre_msg_get_tag);
1112
1113 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1114 {
1115         switch (msg->lm_magic) {
1116         case LUSTRE_MSG_MAGIC_V2: {
1117                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1118                 if (pb == NULL) {
1119                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1120                         return 0;
1121                 }
1122                 return pb->pb_last_committed;
1123         }
1124         default:
1125                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1126                 return 0;
1127         }
1128 }
1129 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1130
1131 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1132 {
1133         switch (msg->lm_magic) {
1134         case LUSTRE_MSG_MAGIC_V2: {
1135                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1136                 if (pb == NULL) {
1137                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1138                         return NULL;
1139                 }
1140                 return pb->pb_pre_versions;
1141         }
1142         default:
1143                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1144                 return NULL;
1145         }
1146 }
1147 EXPORT_SYMBOL(lustre_msg_get_versions);
1148
1149 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1150 {
1151         switch (msg->lm_magic) {
1152         case LUSTRE_MSG_MAGIC_V2: {
1153                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1154                 if (pb == NULL) {
1155                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1156                         return 0;
1157                 }
1158                 return pb->pb_transno;
1159         }
1160         default:
1161                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1162                 return 0;
1163         }
1164 }
1165 EXPORT_SYMBOL(lustre_msg_get_transno);
1166
1167 int lustre_msg_get_status(struct lustre_msg *msg)
1168 {
1169         switch (msg->lm_magic) {
1170         case LUSTRE_MSG_MAGIC_V2: {
1171                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1172                 if (pb != NULL)
1173                         return pb->pb_status;
1174                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1175         }
1176         /* fallthrough */
1177         default:
1178                 /*
1179                  * status might be printed in debug code while message
1180                  * uninitialized
1181                  */
1182                 return -EINVAL;
1183         }
1184 }
1185 EXPORT_SYMBOL(lustre_msg_get_status);
1186
1187 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1188 {
1189         switch (msg->lm_magic) {
1190         case LUSTRE_MSG_MAGIC_V2: {
1191                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1192                 if (pb == NULL) {
1193                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1194                         return -EINVAL;
1195                 }
1196                 return pb->pb_slv;
1197         }
1198         default:
1199                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1200                 return -EINVAL;
1201         }
1202 }
1203
1204
1205 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1206 {
1207         switch (msg->lm_magic) {
1208         case LUSTRE_MSG_MAGIC_V2: {
1209                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1210                 if (pb == NULL) {
1211                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1212                         return;
1213                 }
1214                 pb->pb_slv = slv;
1215                 return;
1216         }
1217         default:
1218                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1219                 return;
1220         }
1221 }
1222
1223 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1224 {
1225         switch (msg->lm_magic) {
1226         case LUSTRE_MSG_MAGIC_V2: {
1227                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1228                 if (pb == NULL) {
1229                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1230                         return -EINVAL;
1231                 }
1232                 return pb->pb_limit;
1233         }
1234         default:
1235                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1236                 return -EINVAL;
1237         }
1238 }
1239
1240
1241 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1242 {
1243         switch (msg->lm_magic) {
1244         case LUSTRE_MSG_MAGIC_V2: {
1245                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1246                 if (pb == NULL) {
1247                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1248                         return;
1249                 }
1250                 pb->pb_limit = limit;
1251                 return;
1252         }
1253         default:
1254                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1255                 return;
1256         }
1257 }
1258
1259 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1260 {
1261         switch (msg->lm_magic) {
1262         case LUSTRE_MSG_MAGIC_V2: {
1263                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1264                 if (pb == NULL) {
1265                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1266                         return 0;
1267                 }
1268                 return pb->pb_conn_cnt;
1269         }
1270         default:
1271                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1272                 return 0;
1273         }
1274 }
1275 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1276
1277 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1278 {
1279         switch (msg->lm_magic) {
1280         case LUSTRE_MSG_MAGIC_V2:
1281                 return msg->lm_magic;
1282         default:
1283                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1284                 return 0;
1285         }
1286 }
1287
1288 __u32 lustre_msg_get_timeout(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_timeout;
1298         }
1299         default:
1300                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1301                 return 0;
1302         }
1303 }
1304
1305 __u32 lustre_msg_get_service_time(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                 if (pb == NULL) {
1311                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1312                         return 0;
1313                 }
1314                 return pb->pb_service_time;
1315         }
1316         default:
1317                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1318                 return 0;
1319         }
1320 }
1321
1322 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1323 {
1324         switch (msg->lm_magic) {
1325         case LUSTRE_MSG_MAGIC_V2: {
1326                 struct ptlrpc_body *pb;
1327
1328                 /* the old pltrpc_body_v2 is smaller; doesn't include jobid */
1329                 if (msg->lm_buflens[MSG_PTLRPC_BODY_OFF] <
1330                     sizeof(struct ptlrpc_body))
1331                         return NULL;
1332
1333                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1334                                           sizeof(struct ptlrpc_body));
1335                 if (!pb)
1336                         return NULL;
1337
1338                 return pb->pb_jobid;
1339         }
1340         default:
1341                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1342                 return NULL;
1343         }
1344 }
1345 EXPORT_SYMBOL(lustre_msg_get_jobid);
1346
1347 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1348 {
1349         switch (msg->lm_magic) {
1350         case LUSTRE_MSG_MAGIC_V2:
1351                 return msg->lm_cksum;
1352         default:
1353                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1354                 return 0;
1355         }
1356 }
1357
1358 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1359 {
1360         switch (msg->lm_magic) {
1361         case LUSTRE_MSG_MAGIC_V2: {
1362                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1363                 if (pb == NULL) {
1364                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1365                         return 0;
1366                 }
1367                 return pb->pb_mbits;
1368         }
1369         default:
1370                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1371                 return 0;
1372         }
1373 }
1374
1375 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1376 {
1377         switch (msg->lm_magic) {
1378         case LUSTRE_MSG_MAGIC_V2: {
1379                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1380                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1381
1382                 unsigned int hsize = 4;
1383                 __u32 crc;
1384
1385                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1386                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1387                                        len, NULL, 0, (unsigned char *)&crc,
1388                                        &hsize);
1389                 return crc;
1390         }
1391         default:
1392                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1393                 return 0;
1394         }
1395 }
1396
1397 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1398 {
1399         switch (msg->lm_magic) {
1400         case LUSTRE_MSG_MAGIC_V2: {
1401                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1402                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1403                 pb->pb_handle = *handle;
1404                 return;
1405         }
1406         default:
1407                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1408         }
1409 }
1410
1411 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1412 {
1413         switch (msg->lm_magic) {
1414         case LUSTRE_MSG_MAGIC_V2: {
1415                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1416                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1417                 pb->pb_type = type;
1418                 return;
1419                 }
1420         default:
1421                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1422         }
1423 }
1424
1425 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1426 {
1427         switch (msg->lm_magic) {
1428         case LUSTRE_MSG_MAGIC_V2: {
1429                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1430                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1431                 pb->pb_opc = opc;
1432                 return;
1433         }
1434         default:
1435                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1436         }
1437 }
1438
1439 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1440 {
1441         switch (msg->lm_magic) {
1442         case LUSTRE_MSG_MAGIC_V2: {
1443                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1444                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1445                 pb->pb_last_xid = last_xid;
1446                 return;
1447         }
1448         default:
1449                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1450         }
1451 }
1452 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1453
1454 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1455 {
1456         switch (msg->lm_magic) {
1457         case LUSTRE_MSG_MAGIC_V2: {
1458                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1459                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1460                 pb->pb_tag = tag;
1461                 return;
1462         }
1463         default:
1464                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1465         }
1466 }
1467 EXPORT_SYMBOL(lustre_msg_set_tag);
1468
1469 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1470 {
1471         switch (msg->lm_magic) {
1472         case LUSTRE_MSG_MAGIC_V2: {
1473                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1474                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1475                 pb->pb_last_committed = last_committed;
1476                 return;
1477         }
1478         default:
1479                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1480         }
1481 }
1482
1483 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1484 {
1485         switch (msg->lm_magic) {
1486         case LUSTRE_MSG_MAGIC_V2: {
1487                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1488                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1489                 pb->pb_pre_versions[0] = versions[0];
1490                 pb->pb_pre_versions[1] = versions[1];
1491                 pb->pb_pre_versions[2] = versions[2];
1492                 pb->pb_pre_versions[3] = versions[3];
1493                 return;
1494         }
1495         default:
1496                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1497         }
1498 }
1499 EXPORT_SYMBOL(lustre_msg_set_versions);
1500
1501 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1502 {
1503         switch (msg->lm_magic) {
1504         case LUSTRE_MSG_MAGIC_V2: {
1505                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1506                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1507                 pb->pb_transno = transno;
1508                 return;
1509         }
1510         default:
1511                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1512         }
1513 }
1514 EXPORT_SYMBOL(lustre_msg_set_transno);
1515
1516 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1517 {
1518         switch (msg->lm_magic) {
1519         case LUSTRE_MSG_MAGIC_V2: {
1520                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1521                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1522                 pb->pb_status = status;
1523                 return;
1524         }
1525         default:
1526                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1527         }
1528 }
1529 EXPORT_SYMBOL(lustre_msg_set_status);
1530
1531 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1532 {
1533         switch (msg->lm_magic) {
1534         case LUSTRE_MSG_MAGIC_V2: {
1535                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1536                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1537                 pb->pb_conn_cnt = conn_cnt;
1538                 return;
1539         }
1540         default:
1541                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1542         }
1543 }
1544
1545 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1546 {
1547         switch (msg->lm_magic) {
1548         case LUSTRE_MSG_MAGIC_V2: {
1549                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1550                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1551                 pb->pb_timeout = timeout;
1552                 return;
1553         }
1554         default:
1555                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1556         }
1557 }
1558
1559 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1560 {
1561         switch (msg->lm_magic) {
1562         case LUSTRE_MSG_MAGIC_V2: {
1563                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1564                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1565                 pb->pb_service_time = service_time;
1566                 return;
1567         }
1568         default:
1569                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1570         }
1571 }
1572
1573 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1574 {
1575         switch (msg->lm_magic) {
1576         case LUSTRE_MSG_MAGIC_V2: {
1577                 __u32 opc = lustre_msg_get_opc(msg);
1578                 struct ptlrpc_body *pb;
1579
1580                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1581                  * See the comment in ptlrpc_request_pack(). */
1582                 if (!opc || opc == LDLM_BL_CALLBACK ||
1583                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1584                         return;
1585
1586                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1587                                        sizeof(struct ptlrpc_body));
1588                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1589
1590                 if (jobid != NULL)
1591                         memcpy(pb->pb_jobid, jobid, sizeof(pb->pb_jobid));
1592                 else if (pb->pb_jobid[0] == '\0')
1593                         lustre_get_jobid(pb->pb_jobid, sizeof(pb->pb_jobid));
1594                 return;
1595         }
1596         default:
1597                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1598         }
1599 }
1600 EXPORT_SYMBOL(lustre_msg_set_jobid);
1601
1602 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1603 {
1604         switch (msg->lm_magic) {
1605         case LUSTRE_MSG_MAGIC_V2:
1606                 msg->lm_cksum = cksum;
1607                 return;
1608         default:
1609                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1610         }
1611 }
1612
1613 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1614 {
1615         switch (msg->lm_magic) {
1616         case LUSTRE_MSG_MAGIC_V2: {
1617                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1618
1619                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1620                 pb->pb_mbits = mbits;
1621                 return;
1622         }
1623         default:
1624                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1625         }
1626 }
1627
1628 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1629 {
1630         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1631
1632         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1633                                          req->rq_pill.rc_area[RCL_SERVER]);
1634         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1635                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1636 }
1637 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1638
1639 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1640 {
1641         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1642         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1643                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1644 }
1645
1646 /**
1647  * Send a remote set_info_async.
1648  *
1649  * This may go from client to server or server to client.
1650  */
1651 int do_set_info_async(struct obd_import *imp,
1652                       int opcode, int version,
1653                       size_t keylen, void *key,
1654                       size_t vallen, void *val,
1655                       struct ptlrpc_request_set *set)
1656 {
1657         struct ptlrpc_request *req;
1658         char *tmp;
1659         int rc;
1660
1661         ENTRY;
1662         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1663         if (req == NULL)
1664                 RETURN(-ENOMEM);
1665
1666         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1667                              RCL_CLIENT, keylen);
1668         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1669                              RCL_CLIENT, vallen);
1670         rc = ptlrpc_request_pack(req, version, opcode);
1671         if (rc) {
1672                 ptlrpc_request_free(req);
1673                 RETURN(rc);
1674         }
1675
1676         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1677         memcpy(tmp, key, keylen);
1678         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1679         memcpy(tmp, val, vallen);
1680
1681         ptlrpc_request_set_replen(req);
1682
1683         if (set) {
1684                 ptlrpc_set_add_req(set, req);
1685                 ptlrpc_check_set(NULL, set);
1686         } else {
1687                 rc = ptlrpc_queue_wait(req);
1688                 ptlrpc_req_finished(req);
1689         }
1690
1691         RETURN(rc);
1692 }
1693 EXPORT_SYMBOL(do_set_info_async);
1694
1695 /* byte flipping routines for all wire types declared in
1696  * lustre_idl.h implemented here.
1697  */
1698 void lustre_swab_ptlrpc_body(struct ptlrpc_body *body)
1699 {
1700         __swab32s(&body->pb_type);
1701         __swab32s(&body->pb_version);
1702         __swab32s(&body->pb_opc);
1703         __swab32s(&body->pb_status);
1704         __swab64s(&body->pb_last_xid);
1705         __swab16s(&body->pb_tag);
1706         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding0) == 0);
1707         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding1) == 0);
1708         __swab64s(&body->pb_last_committed);
1709         __swab64s(&body->pb_transno);
1710         __swab32s(&body->pb_flags);
1711         __swab32s(&body->pb_op_flags);
1712         __swab32s(&body->pb_conn_cnt);
1713         __swab32s(&body->pb_timeout);
1714         __swab32s(&body->pb_service_time);
1715         __swab32s(&body->pb_limit);
1716         __swab64s(&body->pb_slv);
1717         __swab64s(&body->pb_pre_versions[0]);
1718         __swab64s(&body->pb_pre_versions[1]);
1719         __swab64s(&body->pb_pre_versions[2]);
1720         __swab64s(&body->pb_pre_versions[3]);
1721         __swab64s(&body->pb_mbits);
1722         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_0) == 0);
1723         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_1) == 0);
1724         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_2) == 0);
1725         /*
1726          * While we need to maintain compatibility between
1727          * clients and servers without ptlrpc_body_v2 (< 2.3)
1728          * do not swab any fields beyond pb_jobid, as we are
1729          * using this swab function for both ptlrpc_body
1730          * and ptlrpc_body_v2.
1731          */
1732         /* pb_jobid is an ASCII string and should not be swabbed */
1733         BUILD_BUG_ON(offsetof(typeof(*body), pb_jobid) == 0);
1734 }
1735
1736 void lustre_swab_connect(struct obd_connect_data *ocd)
1737 {
1738         __swab64s(&ocd->ocd_connect_flags);
1739         __swab32s(&ocd->ocd_version);
1740         __swab32s(&ocd->ocd_grant);
1741         __swab64s(&ocd->ocd_ibits_known);
1742         __swab32s(&ocd->ocd_index);
1743         __swab32s(&ocd->ocd_brw_size);
1744         /*
1745          * ocd_blocksize and ocd_inodespace don't need to be swabbed because
1746          * they are 8-byte values
1747          */
1748         __swab16s(&ocd->ocd_grant_tax_kb);
1749         __swab32s(&ocd->ocd_grant_max_blks);
1750         __swab64s(&ocd->ocd_transno);
1751         __swab32s(&ocd->ocd_group);
1752         __swab32s(&ocd->ocd_cksum_types);
1753         __swab32s(&ocd->ocd_instance);
1754         /*
1755          * Fields after ocd_cksum_types are only accessible by the receiver
1756          * if the corresponding flag in ocd_connect_flags is set. Accessing
1757          * any field after ocd_maxbytes on the receiver without a valid flag
1758          * may result in out-of-bound memory access and kernel oops.
1759          */
1760         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1761                 __swab32s(&ocd->ocd_max_easize);
1762         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1763                 __swab64s(&ocd->ocd_maxbytes);
1764         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1765                 __swab16s(&ocd->ocd_maxmodrpcs);
1766         BUILD_BUG_ON(offsetof(typeof(*ocd), padding0) == 0);
1767         BUILD_BUG_ON(offsetof(typeof(*ocd), padding1) == 0);
1768         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1769                 __swab64s(&ocd->ocd_connect_flags2);
1770         BUILD_BUG_ON(offsetof(typeof(*ocd), padding3) == 0);
1771         BUILD_BUG_ON(offsetof(typeof(*ocd), padding4) == 0);
1772         BUILD_BUG_ON(offsetof(typeof(*ocd), padding5) == 0);
1773         BUILD_BUG_ON(offsetof(typeof(*ocd), padding6) == 0);
1774         BUILD_BUG_ON(offsetof(typeof(*ocd), padding7) == 0);
1775         BUILD_BUG_ON(offsetof(typeof(*ocd), padding8) == 0);
1776         BUILD_BUG_ON(offsetof(typeof(*ocd), padding9) == 0);
1777         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingA) == 0);
1778         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingB) == 0);
1779         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingC) == 0);
1780         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingD) == 0);
1781         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingE) == 0);
1782         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingF) == 0);
1783 }
1784
1785 static void lustre_swab_ost_layout(struct ost_layout *ol)
1786 {
1787         __swab32s(&ol->ol_stripe_size);
1788         __swab32s(&ol->ol_stripe_count);
1789         __swab64s(&ol->ol_comp_start);
1790         __swab64s(&ol->ol_comp_end);
1791         __swab32s(&ol->ol_comp_id);
1792 }
1793
1794 void lustre_swab_obdo(struct obdo *o)
1795 {
1796         __swab64s(&o->o_valid);
1797         lustre_swab_ost_id(&o->o_oi);
1798         __swab64s(&o->o_parent_seq);
1799         __swab64s(&o->o_size);
1800         __swab64s(&o->o_mtime);
1801         __swab64s(&o->o_atime);
1802         __swab64s(&o->o_ctime);
1803         __swab64s(&o->o_blocks);
1804         __swab64s(&o->o_grant);
1805         __swab32s(&o->o_blksize);
1806         __swab32s(&o->o_mode);
1807         __swab32s(&o->o_uid);
1808         __swab32s(&o->o_gid);
1809         __swab32s(&o->o_flags);
1810         __swab32s(&o->o_nlink);
1811         __swab32s(&o->o_parent_oid);
1812         __swab32s(&o->o_misc);
1813         __swab64s(&o->o_ioepoch);
1814         __swab32s(&o->o_stripe_idx);
1815         __swab32s(&o->o_parent_ver);
1816         lustre_swab_ost_layout(&o->o_layout);
1817         __swab32s(&o->o_layout_version);
1818         __swab32s(&o->o_uid_h);
1819         __swab32s(&o->o_gid_h);
1820         __swab64s(&o->o_data_version);
1821         __swab32s(&o->o_projid);
1822         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_4) == 0);
1823         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_5) == 0);
1824         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_6) == 0);
1825
1826 }
1827 EXPORT_SYMBOL(lustre_swab_obdo);
1828
1829 void lustre_swab_obd_statfs(struct obd_statfs *os)
1830 {
1831         __swab64s(&os->os_type);
1832         __swab64s(&os->os_blocks);
1833         __swab64s(&os->os_bfree);
1834         __swab64s(&os->os_bavail);
1835         __swab64s(&os->os_files);
1836         __swab64s(&os->os_ffree);
1837         /* no need to swab os_fsid */
1838         __swab32s(&os->os_bsize);
1839         __swab32s(&os->os_namelen);
1840         __swab64s(&os->os_maxbytes);
1841         __swab32s(&os->os_state);
1842         __swab32s(&os->os_fprecreated);
1843         __swab32s(&os->os_granted);
1844         BUILD_BUG_ON(offsetof(typeof(*os), os_spare3) == 0);
1845         BUILD_BUG_ON(offsetof(typeof(*os), os_spare4) == 0);
1846         BUILD_BUG_ON(offsetof(typeof(*os), os_spare5) == 0);
1847         BUILD_BUG_ON(offsetof(typeof(*os), os_spare6) == 0);
1848         BUILD_BUG_ON(offsetof(typeof(*os), os_spare7) == 0);
1849         BUILD_BUG_ON(offsetof(typeof(*os), os_spare8) == 0);
1850         BUILD_BUG_ON(offsetof(typeof(*os), os_spare9) == 0);
1851 }
1852
1853 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1854 {
1855         lustre_swab_ost_id(&ioo->ioo_oid);
1856         __swab32s(&ioo->ioo_max_brw);
1857         __swab32s(&ioo->ioo_bufcnt);
1858 }
1859
1860 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1861 {
1862         __swab64s(&nbr->rnb_offset);
1863         __swab32s(&nbr->rnb_len);
1864         __swab32s(&nbr->rnb_flags);
1865 }
1866
1867 void lustre_swab_ost_body(struct ost_body *b)
1868 {
1869         lustre_swab_obdo(&b->oa);
1870 }
1871
1872 void lustre_swab_ost_last_id(u64 *id)
1873 {
1874         __swab64s(id);
1875 }
1876
1877 void lustre_swab_generic_32s(__u32 *val)
1878 {
1879         __swab32s(val);
1880 }
1881
1882 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1883 {
1884         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1885         __swab64s(&desc->gl_flags);
1886         __swab64s(&desc->gl_ver);
1887         __swab64s(&desc->gl_hardlimit);
1888         __swab64s(&desc->gl_softlimit);
1889         __swab64s(&desc->gl_time);
1890         BUILD_BUG_ON(offsetof(typeof(*desc), gl_pad2) == 0);
1891 }
1892 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1893
1894 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1895 {
1896         __swab32s(&desc->lgbd_status);
1897         __swab32s(&desc->lgbd_timeout);
1898         BUILD_BUG_ON(offsetof(typeof(*desc), lgbd_padding) == 0);
1899 }
1900 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1901
1902 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1903 {
1904         __swab64s(&lvb->lvb_size);
1905         __swab64s(&lvb->lvb_mtime);
1906         __swab64s(&lvb->lvb_atime);
1907         __swab64s(&lvb->lvb_ctime);
1908         __swab64s(&lvb->lvb_blocks);
1909 }
1910 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1911
1912 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1913 {
1914         __swab64s(&lvb->lvb_size);
1915         __swab64s(&lvb->lvb_mtime);
1916         __swab64s(&lvb->lvb_atime);
1917         __swab64s(&lvb->lvb_ctime);
1918         __swab64s(&lvb->lvb_blocks);
1919         __swab32s(&lvb->lvb_mtime_ns);
1920         __swab32s(&lvb->lvb_atime_ns);
1921         __swab32s(&lvb->lvb_ctime_ns);
1922         __swab32s(&lvb->lvb_padding);
1923 }
1924 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1925
1926 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1927 {
1928         __swab64s(&lvb->lvb_flags);
1929         __swab64s(&lvb->lvb_id_may_rel);
1930         __swab64s(&lvb->lvb_id_rel);
1931         __swab64s(&lvb->lvb_id_qunit);
1932         __swab64s(&lvb->lvb_pad1);
1933 }
1934 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1935
1936 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1937 {
1938         __swab32s(&lvb->lvb_status);
1939         __swab32s(&lvb->lvb_index);
1940         BUILD_BUG_ON(offsetof(typeof(*lvb), lvb_padding) == 0);
1941 }
1942 EXPORT_SYMBOL(lustre_swab_barrier_lvb);
1943
1944 void lustre_swab_mdt_body(struct mdt_body *b)
1945 {
1946         lustre_swab_lu_fid(&b->mbo_fid1);
1947         lustre_swab_lu_fid(&b->mbo_fid2);
1948         /* handle is opaque */
1949         __swab64s(&b->mbo_valid);
1950         __swab64s(&b->mbo_size);
1951         __swab64s(&b->mbo_mtime);
1952         __swab64s(&b->mbo_atime);
1953         __swab64s(&b->mbo_ctime);
1954         __swab64s(&b->mbo_blocks);
1955         __swab64s(&b->mbo_version);
1956         __swab64s(&b->mbo_t_state);
1957         __swab32s(&b->mbo_fsuid);
1958         __swab32s(&b->mbo_fsgid);
1959         __swab32s(&b->mbo_capability);
1960         __swab32s(&b->mbo_mode);
1961         __swab32s(&b->mbo_uid);
1962         __swab32s(&b->mbo_gid);
1963         __swab32s(&b->mbo_flags);
1964         __swab32s(&b->mbo_rdev);
1965         __swab32s(&b->mbo_nlink);
1966         __swab32s(&b->mbo_layout_gen);
1967         __swab32s(&b->mbo_suppgid);
1968         __swab32s(&b->mbo_eadatasize);
1969         __swab32s(&b->mbo_aclsize);
1970         __swab32s(&b->mbo_max_mdsize);
1971         BUILD_BUG_ON(offsetof(typeof(*b), mbo_unused3) == 0);
1972         __swab32s(&b->mbo_uid_h);
1973         __swab32s(&b->mbo_gid_h);
1974         __swab32s(&b->mbo_projid);
1975         __swab64s(&b->mbo_dom_size);
1976         __swab64s(&b->mbo_dom_blocks);
1977         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_8) == 0);
1978         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_9) == 0);
1979         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_10) == 0);
1980 }
1981
1982 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1983 {
1984         /* mio_open_handle is opaque */
1985         BUILD_BUG_ON(offsetof(typeof(*b), mio_unused1) == 0);
1986         BUILD_BUG_ON(offsetof(typeof(*b), mio_unused2) == 0);
1987         BUILD_BUG_ON(offsetof(typeof(*b), mio_padding) == 0);
1988 }
1989
1990 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1991 {
1992         int i;
1993
1994         __swab32s(&mti->mti_lustre_ver);
1995         __swab32s(&mti->mti_stripe_index);
1996         __swab32s(&mti->mti_config_ver);
1997         __swab32s(&mti->mti_flags);
1998         __swab32s(&mti->mti_instance);
1999         __swab32s(&mti->mti_nid_count);
2000         BUILD_BUG_ON(sizeof(lnet_nid_t) != sizeof(__u64));
2001         for (i = 0; i < MTI_NIDS_MAX; i++)
2002                 __swab64s(&mti->mti_nids[i]);
2003 }
2004
2005 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
2006 {
2007         __u8 i;
2008
2009         __swab64s(&entry->mne_version);
2010         __swab32s(&entry->mne_instance);
2011         __swab32s(&entry->mne_index);
2012         __swab32s(&entry->mne_length);
2013
2014         /* mne_nid_(count|type) must be one byte size because we're gonna
2015          * access it w/o swapping. */
2016         BUILD_BUG_ON(sizeof(entry->mne_nid_count) != sizeof(__u8));
2017         BUILD_BUG_ON(sizeof(entry->mne_nid_type) != sizeof(__u8));
2018
2019         /* remove this assertion if ipv6 is supported. */
2020         LASSERT(entry->mne_nid_type == 0);
2021         for (i = 0; i < entry->mne_nid_count; i++) {
2022                 BUILD_BUG_ON(sizeof(lnet_nid_t) != sizeof(__u64));
2023                 __swab64s(&entry->u.nids[i]);
2024         }
2025 }
2026 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
2027
2028 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
2029 {
2030         __swab64s(&body->mcb_offset);
2031         __swab32s(&body->mcb_units);
2032         __swab16s(&body->mcb_type);
2033 }
2034
2035 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
2036 {
2037         __swab64s(&body->mcr_offset);
2038         __swab64s(&body->mcr_size);
2039 }
2040
2041 static void lustre_swab_obd_dqinfo(struct obd_dqinfo *i)
2042 {
2043         __swab64s(&i->dqi_bgrace);
2044         __swab64s(&i->dqi_igrace);
2045         __swab32s(&i->dqi_flags);
2046         __swab32s(&i->dqi_valid);
2047 }
2048
2049 static void lustre_swab_obd_dqblk(struct obd_dqblk *b)
2050 {
2051         __swab64s(&b->dqb_ihardlimit);
2052         __swab64s(&b->dqb_isoftlimit);
2053         __swab64s(&b->dqb_curinodes);
2054         __swab64s(&b->dqb_bhardlimit);
2055         __swab64s(&b->dqb_bsoftlimit);
2056         __swab64s(&b->dqb_curspace);
2057         __swab64s(&b->dqb_btime);
2058         __swab64s(&b->dqb_itime);
2059         __swab32s(&b->dqb_valid);
2060         BUILD_BUG_ON(offsetof(typeof(*b), dqb_padding) == 0);
2061 }
2062
2063 void lustre_swab_obd_quotactl(struct obd_quotactl *q)
2064 {
2065         __swab32s(&q->qc_cmd);
2066         __swab32s(&q->qc_type);
2067         __swab32s(&q->qc_id);
2068         __swab32s(&q->qc_stat);
2069         lustre_swab_obd_dqinfo(&q->qc_dqinfo);
2070         lustre_swab_obd_dqblk(&q->qc_dqblk);
2071 }
2072
2073 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2074 {
2075         lustre_swab_lu_fid(&gf->gf_fid);
2076         __swab64s(&gf->gf_recno);
2077         __swab32s(&gf->gf_linkno);
2078         __swab32s(&gf->gf_pathlen);
2079 }
2080 EXPORT_SYMBOL(lustre_swab_fid2path);
2081
2082 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
2083 {
2084         __swab64s(&fm_extent->fe_logical);
2085         __swab64s(&fm_extent->fe_physical);
2086         __swab64s(&fm_extent->fe_length);
2087         __swab32s(&fm_extent->fe_flags);
2088         __swab32s(&fm_extent->fe_device);
2089 }
2090
2091 static void lustre_swab_fiemap_hdr(struct fiemap *fiemap)
2092 {
2093         __swab64s(&fiemap->fm_start);
2094         __swab64s(&fiemap->fm_length);
2095         __swab32s(&fiemap->fm_flags);
2096         __swab32s(&fiemap->fm_mapped_extents);
2097         __swab32s(&fiemap->fm_extent_count);
2098         __swab32s(&fiemap->fm_reserved);
2099 }
2100
2101 int lustre_swab_fiemap(struct fiemap *fiemap, __u32 len)
2102 {
2103         __u32 i, size, count;
2104
2105         lustre_swab_fiemap_hdr(fiemap);
2106
2107         size = fiemap_count_to_size(fiemap->fm_mapped_extents);
2108         count = fiemap->fm_mapped_extents;
2109         if (unlikely(size > len)) {
2110                 count = (len - sizeof(struct fiemap)) /
2111                         sizeof(struct fiemap_extent);
2112                 fiemap->fm_mapped_extents = count;
2113                 size = -EOVERFLOW;
2114         }
2115         /* still swab extents as we cannot yet pass rc to callers */
2116         for (i = 0; i < count; i++)
2117                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2118
2119         return size;
2120 }
2121
2122 void lustre_swab_fiemap_info_key(struct ll_fiemap_info_key *fiemap_info)
2123 {
2124         lustre_swab_obdo(&fiemap_info->lfik_oa);
2125         lustre_swab_fiemap_hdr(&fiemap_info->lfik_fiemap);
2126 }
2127
2128 void lustre_swab_idx_info(struct idx_info *ii)
2129 {
2130         __swab32s(&ii->ii_magic);
2131         __swab32s(&ii->ii_flags);
2132         __swab16s(&ii->ii_count);
2133         __swab32s(&ii->ii_attrs);
2134         lustre_swab_lu_fid(&ii->ii_fid);
2135         __swab64s(&ii->ii_version);
2136         __swab64s(&ii->ii_hash_start);
2137         __swab64s(&ii->ii_hash_end);
2138         __swab16s(&ii->ii_keysize);
2139         __swab16s(&ii->ii_recsize);
2140 }
2141
2142 void lustre_swab_lip_header(struct lu_idxpage *lip)
2143 {
2144         /* swab header */
2145         __swab32s(&lip->lip_magic);
2146         __swab16s(&lip->lip_flags);
2147         __swab16s(&lip->lip_nr);
2148 }
2149 EXPORT_SYMBOL(lustre_swab_lip_header);
2150
2151 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2152 {
2153         __swab32s(&rr->rr_opcode);
2154         __swab32s(&rr->rr_cap);
2155         __swab32s(&rr->rr_fsuid);
2156         /* rr_fsuid_h is unused */
2157         __swab32s(&rr->rr_fsgid);
2158         /* rr_fsgid_h is unused */
2159         __swab32s(&rr->rr_suppgid1);
2160         /* rr_suppgid1_h is unused */
2161         __swab32s(&rr->rr_suppgid2);
2162         /* rr_suppgid2_h is unused */
2163         lustre_swab_lu_fid(&rr->rr_fid1);
2164         lustre_swab_lu_fid(&rr->rr_fid2);
2165         __swab64s(&rr->rr_mtime);
2166         __swab64s(&rr->rr_atime);
2167         __swab64s(&rr->rr_ctime);
2168         __swab64s(&rr->rr_size);
2169         __swab64s(&rr->rr_blocks);
2170         __swab32s(&rr->rr_bias);
2171         __swab32s(&rr->rr_mode);
2172         __swab32s(&rr->rr_flags);
2173         __swab32s(&rr->rr_flags_h);
2174         __swab32s(&rr->rr_umask);
2175         __swab16s(&rr->rr_mirror_id);
2176
2177         BUILD_BUG_ON(offsetof(typeof(*rr), rr_padding_4) == 0);
2178 };
2179
2180 void lustre_swab_lov_desc(struct lov_desc *ld)
2181 {
2182         __swab32s(&ld->ld_tgt_count);
2183         __swab32s(&ld->ld_active_tgt_count);
2184         __swab32s(&ld->ld_default_stripe_count);
2185         __swab32s(&ld->ld_pattern);
2186         __swab64s(&ld->ld_default_stripe_size);
2187         __swab64s(&ld->ld_default_stripe_offset);
2188         __swab32s(&ld->ld_qos_maxage);
2189         /* uuid endian insensitive */
2190 }
2191 EXPORT_SYMBOL(lustre_swab_lov_desc);
2192
2193 void lustre_swab_lmv_desc(struct lmv_desc *ld)
2194 {
2195         __swab32s(&ld->ld_tgt_count);
2196         __swab32s(&ld->ld_active_tgt_count);
2197         __swab32s(&ld->ld_default_stripe_count);
2198         __swab32s(&ld->ld_pattern);
2199         __swab64s(&ld->ld_default_hash_size);
2200         __swab32s(&ld->ld_qos_maxage);
2201         /* uuid endian insensitive */
2202 }
2203
2204 /* This structure is always in little-endian */
2205 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2206 {
2207         int i;
2208
2209         __swab32s(&lmm1->lmv_magic);
2210         __swab32s(&lmm1->lmv_stripe_count);
2211         __swab32s(&lmm1->lmv_master_mdt_index);
2212         __swab32s(&lmm1->lmv_hash_type);
2213         __swab32s(&lmm1->lmv_layout_version);
2214         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2215                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2216 }
2217
2218 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2219 {
2220         switch (lmm->lmv_magic) {
2221         case LMV_MAGIC_V1:
2222                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2223                 break;
2224         default:
2225                 break;
2226         }
2227 }
2228 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2229
2230 void lustre_swab_lmv_user_md_objects(struct lmv_user_mds_data *lmd,
2231                                      int stripe_count)
2232 {
2233         int i;
2234
2235         for (i = 0; i < stripe_count; i++)
2236                 __swab32s(&(lmd[i].lum_mds));
2237 }
2238 EXPORT_SYMBOL(lustre_swab_lmv_user_md_objects);
2239
2240
2241 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2242 {
2243         __u32 count;
2244
2245         if (lum->lum_magic == LMV_MAGIC_FOREIGN) {
2246                 __swab32s(&lum->lum_magic);
2247                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_length);
2248                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_type);
2249                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_flags);
2250                 return;
2251         }
2252
2253         count = lum->lum_stripe_count;
2254         __swab32s(&lum->lum_magic);
2255         __swab32s(&lum->lum_stripe_count);
2256         __swab32s(&lum->lum_stripe_offset);
2257         __swab32s(&lum->lum_hash_type);
2258         __swab32s(&lum->lum_type);
2259         BUILD_BUG_ON(offsetof(typeof(*lum), lum_padding1) == 0);
2260         switch (lum->lum_magic) {
2261         case LMV_USER_MAGIC_SPECIFIC:
2262                 count = lum->lum_stripe_count;
2263                 /* fallthrough */
2264         case __swab32(LMV_USER_MAGIC_SPECIFIC):
2265                 lustre_swab_lmv_user_md_objects(lum->lum_objects, count);
2266                 break;
2267         default:
2268                 break;
2269         }
2270 }
2271 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2272
2273 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2274                               const char *msg)
2275 {
2276         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2277         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2278         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2279         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2280         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2281         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2282         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2283         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2284                lum->lmm_stripe_offset);
2285         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2286                 struct lov_user_md_v3 *v3 = (void *)lum;
2287                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2288         }
2289         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2290                 struct lov_user_md_v3 *v3 = (void *)lum;
2291                 int i;
2292
2293                 if (v3->lmm_pool_name[0] != '\0')
2294                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2295
2296                 CDEBUG(lvl, "\ttarget list:\n");
2297                 for (i = 0; i < v3->lmm_stripe_count; i++)
2298                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2299         }
2300 }
2301
2302 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2303                           const char *msg)
2304 {
2305         struct lov_comp_md_v1   *comp_v1;
2306         int                      i;
2307
2308         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2309                 return;
2310
2311         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2312             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2313                 lustre_print_v1v3(lvl, lum, msg);
2314                 return;
2315         }
2316
2317         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2318                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2319                 return;
2320         }
2321
2322         comp_v1 = (struct lov_comp_md_v1 *)lum;
2323         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2324         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2325         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2326         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2327         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2328         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2329         CDEBUG(lvl, "\tlcm_mirror_count: %#x\n\n", comp_v1->lcm_mirror_count);
2330
2331         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2332                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2333                 struct lov_user_md *v1;
2334
2335                 CDEBUG(lvl, "\tentry %d:\n", i);
2336                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2337                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2338                 if (ent->lcme_flags & LCME_FL_NOSYNC)
2339                         CDEBUG(lvl, "\tlcme_timestamp: %llu\n",
2340                                         ent->lcme_timestamp);
2341                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2342                        ent->lcme_extent.e_start);
2343                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2344                        ent->lcme_extent.e_end);
2345                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2346                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2347
2348                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2349                                 comp_v1->lcm_entries[i].lcme_offset);
2350                 lustre_print_v1v3(lvl, v1, msg);
2351         }
2352 }
2353 EXPORT_SYMBOL(lustre_print_user_md);
2354
2355 static void lustre_swab_lmm_oi(struct ost_id *oi)
2356 {
2357         __swab64s(&oi->oi.oi_id);
2358         __swab64s(&oi->oi.oi_seq);
2359 }
2360
2361 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2362 {
2363         ENTRY;
2364         __swab32s(&lum->lmm_magic);
2365         __swab32s(&lum->lmm_pattern);
2366         lustre_swab_lmm_oi(&lum->lmm_oi);
2367         __swab32s(&lum->lmm_stripe_size);
2368         __swab16s(&lum->lmm_stripe_count);
2369         __swab16s(&lum->lmm_stripe_offset);
2370         EXIT;
2371 }
2372
2373 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2374 {
2375         ENTRY;
2376         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2377         lustre_swab_lov_user_md_common(lum);
2378         EXIT;
2379 }
2380 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2381
2382 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2383 {
2384         ENTRY;
2385         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2386         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2387         /* lmm_pool_name nothing to do with char */
2388         EXIT;
2389 }
2390 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2391
2392 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2393 {
2394         struct lov_comp_md_entry_v1     *ent;
2395         struct lov_user_md_v1   *v1;
2396         struct lov_user_md_v3   *v3;
2397         int     i;
2398         bool    cpu_endian;
2399         __u32   off, size;
2400         __u16   ent_count, stripe_count;
2401         ENTRY;
2402
2403         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2404         ent_count = lum->lcm_entry_count;
2405         if (!cpu_endian)
2406                 __swab16s(&ent_count);
2407
2408         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2409         __swab32s(&lum->lcm_magic);
2410         __swab32s(&lum->lcm_size);
2411         __swab32s(&lum->lcm_layout_gen);
2412         __swab16s(&lum->lcm_flags);
2413         __swab16s(&lum->lcm_entry_count);
2414         __swab16s(&lum->lcm_mirror_count);
2415         BUILD_BUG_ON(offsetof(typeof(*lum), lcm_padding1) == 0);
2416         BUILD_BUG_ON(offsetof(typeof(*lum), lcm_padding2) == 0);
2417
2418         for (i = 0; i < ent_count; i++) {
2419                 ent = &lum->lcm_entries[i];
2420                 off = ent->lcme_offset;
2421                 size = ent->lcme_size;
2422
2423                 if (!cpu_endian) {
2424                         __swab32s(&off);
2425                         __swab32s(&size);
2426                 }
2427                 __swab32s(&ent->lcme_id);
2428                 __swab32s(&ent->lcme_flags);
2429                 __swab64s(&ent->lcme_timestamp);
2430                 __swab64s(&ent->lcme_extent.e_start);
2431                 __swab64s(&ent->lcme_extent.e_end);
2432                 __swab32s(&ent->lcme_offset);
2433                 __swab32s(&ent->lcme_size);
2434                 __swab32s(&ent->lcme_layout_gen);
2435                 BUILD_BUG_ON(offsetof(typeof(*ent), lcme_padding_1) == 0);
2436
2437                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2438                 stripe_count = v1->lmm_stripe_count;
2439                 if (!cpu_endian)
2440                         __swab16s(&stripe_count);
2441
2442                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2443                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2444                         lustre_swab_lov_user_md_v1(v1);
2445                         if (size > sizeof(*v1))
2446                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2447                                                                 stripe_count);
2448                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2449                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2450                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2451                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2452                         v3 = (struct lov_user_md_v3 *)v1;
2453                         lustre_swab_lov_user_md_v3(v3);
2454                         if (size > sizeof(*v3))
2455                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2456                                                                 stripe_count);
2457                 } else {
2458                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2459                 }
2460         }
2461 }
2462 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2463
2464 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2465                                      int stripe_count)
2466 {
2467         int i;
2468
2469         ENTRY;
2470         for (i = 0; i < stripe_count; i++) {
2471                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2472                 __swab32s(&(lod[i].l_ost_gen));
2473                 __swab32s(&(lod[i].l_ost_idx));
2474         }
2475         EXIT;
2476 }
2477 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2478
2479 void lustre_swab_lov_user_md(struct lov_user_md *lum, size_t size)
2480 {
2481         struct lov_user_md_v1 *v1;
2482         struct lov_user_md_v3 *v3;
2483         struct lov_foreign_md *lfm;
2484         __u16 stripe_count;
2485         ENTRY;
2486
2487         CDEBUG(D_IOCTL, "swabbing lov_user_md\n");
2488         switch (lum->lmm_magic) {
2489         case __swab32(LOV_MAGIC_V1):
2490         case LOV_USER_MAGIC_V1:
2491         {
2492                 v1 = (struct lov_user_md_v1 *)lum;
2493                 stripe_count = v1->lmm_stripe_count;
2494
2495                 if (lum->lmm_magic != LOV_USER_MAGIC_V1)
2496                         __swab16s(&stripe_count);
2497
2498                 lustre_swab_lov_user_md_v1(v1);
2499                 if (size > sizeof(*v1))
2500                         lustre_swab_lov_user_md_objects(v1->lmm_objects,
2501                                                         stripe_count);
2502
2503                 break;
2504         }
2505         case __swab32(LOV_MAGIC_V3):
2506         case LOV_USER_MAGIC_V3:
2507         {
2508                 v3 = (struct lov_user_md_v3 *)lum;
2509                 stripe_count = v3->lmm_stripe_count;
2510
2511                 if (lum->lmm_magic != LOV_USER_MAGIC_V3)
2512                         __swab16s(&stripe_count);
2513
2514                 lustre_swab_lov_user_md_v3(v3);
2515                 if (size > sizeof(*v3))
2516                         lustre_swab_lov_user_md_objects(v3->lmm_objects,
2517                                                         stripe_count);
2518                 break;
2519         }
2520         case __swab32(LOV_USER_MAGIC_SPECIFIC):
2521         case LOV_USER_MAGIC_SPECIFIC:
2522         {
2523                 v3 = (struct lov_user_md_v3 *)lum;
2524                 stripe_count = v3->lmm_stripe_count;
2525
2526                 if (lum->lmm_magic != LOV_USER_MAGIC_SPECIFIC)
2527                         __swab16s(&stripe_count);
2528
2529                 lustre_swab_lov_user_md_v3(v3);
2530                 lustre_swab_lov_user_md_objects(v3->lmm_objects, stripe_count);
2531                 break;
2532         }
2533         case __swab32(LOV_MAGIC_COMP_V1):
2534         case LOV_USER_MAGIC_COMP_V1:
2535                 lustre_swab_lov_comp_md_v1((struct lov_comp_md_v1 *)lum);
2536                 break;
2537         case __swab32(LOV_MAGIC_FOREIGN):
2538         case LOV_USER_MAGIC_FOREIGN:
2539         {
2540                 lfm = (struct lov_foreign_md *)lum;
2541                 __swab32s(&lfm->lfm_magic);
2542                 __swab32s(&lfm->lfm_length);
2543                 __swab32s(&lfm->lfm_type);
2544                 __swab32s(&lfm->lfm_flags);
2545                 break;
2546         }
2547         default:
2548                 CDEBUG(D_IOCTL, "Invalid LOV magic %08x\n", lum->lmm_magic);
2549         }
2550 }
2551 EXPORT_SYMBOL(lustre_swab_lov_user_md);
2552
2553 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2554 {
2555         ENTRY;
2556         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2557         __swab32s(&lmm->lmm_magic);
2558         __swab32s(&lmm->lmm_pattern);
2559         lustre_swab_lmm_oi(&lmm->lmm_oi);
2560         __swab32s(&lmm->lmm_stripe_size);
2561         __swab16s(&lmm->lmm_stripe_count);
2562         __swab16s(&lmm->lmm_layout_gen);
2563         EXIT;
2564 }
2565 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2566
2567 void lustre_swab_ldlm_res_id(struct ldlm_res_id *id)
2568 {
2569         int i;
2570
2571         for (i = 0; i < RES_NAME_SIZE; i++)
2572                 __swab64s(&id->name[i]);
2573 }
2574
2575 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2576 {
2577         /* the lock data is a union and the first two fields are always an
2578          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2579          * data the same way.
2580          */
2581         __swab64s(&d->l_extent.start);
2582         __swab64s(&d->l_extent.end);
2583         __swab64s(&d->l_extent.gid);
2584         __swab64s(&d->l_flock.lfw_owner);
2585         __swab32s(&d->l_flock.lfw_pid);
2586 }
2587
2588 void lustre_swab_ldlm_intent(struct ldlm_intent *i)
2589 {
2590         __swab64s(&i->opc);
2591 }
2592
2593 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2594 {
2595         __swab32s(&r->lr_type);
2596         BUILD_BUG_ON(offsetof(typeof(*r), lr_pad) == 0);
2597         lustre_swab_ldlm_res_id(&r->lr_name);
2598 }
2599
2600 void lustre_swab_ldlm_lock_desc(struct ldlm_lock_desc *l)
2601 {
2602         lustre_swab_ldlm_resource_desc(&l->l_resource);
2603         __swab32s(&l->l_req_mode);
2604         __swab32s(&l->l_granted_mode);
2605         lustre_swab_ldlm_policy_data(&l->l_policy_data);
2606 }
2607
2608 void lustre_swab_ldlm_request(struct ldlm_request *rq)
2609 {
2610         __swab32s(&rq->lock_flags);
2611         lustre_swab_ldlm_lock_desc(&rq->lock_desc);
2612         __swab32s(&rq->lock_count);
2613         /* lock_handle[] opaque */
2614 }
2615
2616 void lustre_swab_ldlm_reply(struct ldlm_reply *r)
2617 {
2618         __swab32s(&r->lock_flags);
2619         BUILD_BUG_ON(offsetof(typeof(*r), lock_padding) == 0);
2620         lustre_swab_ldlm_lock_desc(&r->lock_desc);
2621         /* lock_handle opaque */
2622         __swab64s(&r->lock_policy_res1);
2623         __swab64s(&r->lock_policy_res2);
2624 }
2625
2626 void lustre_swab_quota_body(struct quota_body *b)
2627 {
2628         lustre_swab_lu_fid(&b->qb_fid);
2629         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2630         __swab32s(&b->qb_flags);
2631         __swab64s(&b->qb_count);
2632         __swab64s(&b->qb_usage);
2633         __swab64s(&b->qb_slv_ver);
2634 }
2635
2636 /* Dump functions */
2637 void dump_ioo(struct obd_ioobj *ioo)
2638 {
2639         CDEBUG(D_RPCTRACE,
2640                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2641                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2642                ioo->ioo_bufcnt);
2643 }
2644
2645 void dump_rniobuf(struct niobuf_remote *nb)
2646 {
2647         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2648                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2649 }
2650
2651 void dump_obdo(struct obdo *oa)
2652 {
2653         u64 valid = oa->o_valid;
2654
2655         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2656         if (valid & OBD_MD_FLID)
2657                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2658         if (valid & OBD_MD_FLFID)
2659                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2660                        oa->o_parent_seq);
2661         if (valid & OBD_MD_FLSIZE)
2662                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2663         if (valid & OBD_MD_FLMTIME)
2664                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2665         if (valid & OBD_MD_FLATIME)
2666                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2667         if (valid & OBD_MD_FLCTIME)
2668                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2669         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2670                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2671         if (valid & OBD_MD_FLGRANT)
2672                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2673         if (valid & OBD_MD_FLBLKSZ)
2674                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2675         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2676                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2677                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2678                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2679         if (valid & OBD_MD_FLUID)
2680                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2681         if (valid & OBD_MD_FLUID)
2682                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2683         if (valid & OBD_MD_FLGID)
2684                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2685         if (valid & OBD_MD_FLGID)
2686                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2687         if (valid & OBD_MD_FLFLAGS)
2688                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2689         if (valid & OBD_MD_FLNLINK)
2690                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2691         else if (valid & OBD_MD_FLCKSUM)
2692                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2693                        oa->o_nlink);
2694         if (valid & OBD_MD_FLPARENT)
2695                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2696                        oa->o_parent_oid);
2697         if (valid & OBD_MD_FLFID) {
2698                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2699                        oa->o_stripe_idx);
2700                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2701                        oa->o_parent_ver);
2702         }
2703         if (valid & OBD_MD_FLHANDLE)
2704                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2705                        oa->o_handle.cookie);
2706 }
2707
2708 void dump_ost_body(struct ost_body *ob)
2709 {
2710         dump_obdo(&ob->oa);
2711 }
2712
2713 void dump_rcs(__u32 *rc)
2714 {
2715         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2716 }
2717
2718 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2719 {
2720         LASSERT(req->rq_reqmsg);
2721
2722         switch (req->rq_reqmsg->lm_magic) {
2723         case LUSTRE_MSG_MAGIC_V2:
2724                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2725         default:
2726                 CERROR("bad lustre msg magic: %#08X\n",
2727                        req->rq_reqmsg->lm_magic);
2728         }
2729         return 0;
2730 }
2731
2732 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2733 {
2734         if (unlikely(!req->rq_repmsg))
2735                 return 0;
2736
2737         switch (req->rq_repmsg->lm_magic) {
2738         case LUSTRE_MSG_MAGIC_V2:
2739                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2740         default:
2741                 /* uninitialized yet */
2742                 return 0;
2743         }
2744 }
2745
2746 void _debug_req(struct ptlrpc_request *req,
2747                 struct libcfs_debug_msg_data *msgdata, const char *fmt, ...)
2748 {
2749         bool req_ok = req->rq_reqmsg != NULL;
2750         bool rep_ok = false;
2751         lnet_nid_t nid = LNET_NID_ANY;
2752         struct va_format vaf;
2753         va_list args;
2754         int rep_flags = -1;
2755         int rep_status = -1;
2756
2757         spin_lock(&req->rq_early_free_lock);
2758         if (req->rq_repmsg)
2759                 rep_ok = true;
2760
2761         if (ptlrpc_req_need_swab(req)) {
2762                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2763                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2764         }
2765
2766         if (rep_ok) {
2767                 rep_flags = lustre_msg_get_flags(req->rq_repmsg);
2768                 rep_status = lustre_msg_get_status(req->rq_repmsg);
2769         }
2770         spin_unlock(&req->rq_early_free_lock);
2771
2772         if (req->rq_import && req->rq_import->imp_connection)
2773                 nid = req->rq_import->imp_connection->c_peer.nid;
2774         else if (req->rq_export && req->rq_export->exp_connection)
2775                 nid = req->rq_export->exp_connection->c_peer.nid;
2776
2777         va_start(args, fmt);
2778         vaf.fmt = fmt;
2779         vaf.va = &args;
2780         libcfs_debug_msg(msgdata,
2781                          "%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",
2782                          &vaf,
2783                          req, req->rq_xid, req->rq_transno,
2784                          req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2785                          req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2786                          req->rq_import ?
2787                          req->rq_import->imp_obd->obd_name :
2788                          req->rq_export ?
2789                          req->rq_export->exp_client_uuid.uuid :
2790                          "<?>",
2791                          libcfs_nid2str(nid),
2792                          req->rq_request_portal, req->rq_reply_portal,
2793                          req->rq_reqlen, req->rq_replen,
2794                          req->rq_early_count, (s64)req->rq_timedout,
2795                          (s64)req->rq_deadline,
2796                          atomic_read(&req->rq_refcount),
2797                          DEBUG_REQ_FLAGS(req),
2798                          req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2799                          rep_flags, req->rq_status, rep_status,
2800                          req_ok ? lustre_msg_get_jobid(req->rq_reqmsg) ?: ""
2801                                 : "");
2802         va_end(args);
2803 }
2804 EXPORT_SYMBOL(_debug_req);
2805
2806 void lustre_swab_lustre_capa(struct lustre_capa *c)
2807 {
2808         lustre_swab_lu_fid(&c->lc_fid);
2809         __swab64s(&c->lc_opc);
2810         __swab64s(&c->lc_uid);
2811         __swab64s(&c->lc_gid);
2812         __swab32s(&c->lc_flags);
2813         __swab32s(&c->lc_keyid);
2814         __swab32s(&c->lc_timeout);
2815         __swab32s(&c->lc_expiry);
2816 }
2817
2818 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2819 {
2820         __swab64s(&k->lk_seq);
2821         __swab32s(&k->lk_keyid);
2822         BUILD_BUG_ON(offsetof(typeof(*k), lk_padding) == 0);
2823 }
2824
2825 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2826 {
2827         __swab32s(&state->hus_states);
2828         __swab32s(&state->hus_archive_id);
2829 }
2830
2831 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2832 {
2833         __swab32s(&hss->hss_valid);
2834         __swab64s(&hss->hss_setmask);
2835         __swab64s(&hss->hss_clearmask);
2836         __swab32s(&hss->hss_archive_id);
2837 }
2838
2839 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2840 {
2841         __swab64s(&extent->offset);
2842         __swab64s(&extent->length);
2843 }
2844
2845 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2846 {
2847         __swab32s(&action->hca_state);
2848         __swab32s(&action->hca_action);
2849         lustre_swab_hsm_extent(&action->hca_location);
2850 }
2851
2852 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2853 {
2854         lustre_swab_lu_fid(&hui->hui_fid);
2855         lustre_swab_hsm_extent(&hui->hui_extent);
2856 }
2857
2858 void lustre_swab_lu_extent(struct lu_extent *le)
2859 {
2860         __swab64s(&le->e_start);
2861         __swab64s(&le->e_end);
2862 }
2863
2864 void lustre_swab_layout_intent(struct layout_intent *li)
2865 {
2866         __swab32s(&li->li_opc);
2867         __swab32s(&li->li_flags);
2868         lustre_swab_lu_extent(&li->li_extent);
2869 }
2870
2871 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2872 {
2873         lustre_swab_lu_fid(&hpk->hpk_fid);
2874         __swab64s(&hpk->hpk_cookie);
2875         __swab64s(&hpk->hpk_extent.offset);
2876         __swab64s(&hpk->hpk_extent.length);
2877         __swab16s(&hpk->hpk_flags);
2878         __swab16s(&hpk->hpk_errval);
2879 }
2880
2881 void lustre_swab_hsm_request(struct hsm_request *hr)
2882 {
2883         __swab32s(&hr->hr_action);
2884         __swab32s(&hr->hr_archive_id);
2885         __swab64s(&hr->hr_flags);
2886         __swab32s(&hr->hr_itemcount);
2887         __swab32s(&hr->hr_data_len);
2888 }
2889
2890 void lustre_swab_object_update(struct object_update *ou)
2891 {
2892         struct object_update_param *param;
2893         size_t  i;
2894
2895         __swab16s(&ou->ou_type);
2896         __swab16s(&ou->ou_params_count);
2897         __swab32s(&ou->ou_result_size);
2898         __swab32s(&ou->ou_flags);
2899         __swab32s(&ou->ou_padding1);
2900         __swab64s(&ou->ou_batchid);
2901         lustre_swab_lu_fid(&ou->ou_fid);
2902         param = &ou->ou_params[0];
2903         for (i = 0; i < ou->ou_params_count; i++) {
2904                 __swab16s(&param->oup_len);
2905                 __swab16s(&param->oup_padding);
2906                 __swab32s(&param->oup_padding2);
2907                 param = (struct object_update_param *)((char *)param +
2908                          object_update_param_size(param));
2909         }
2910 }
2911
2912 void lustre_swab_object_update_request(struct object_update_request *our)
2913 {
2914         size_t i;
2915         __swab32s(&our->ourq_magic);
2916         __swab16s(&our->ourq_count);
2917         __swab16s(&our->ourq_padding);
2918         for (i = 0; i < our->ourq_count; i++) {
2919                 struct object_update *ou;
2920
2921                 ou = object_update_request_get(our, i, NULL);
2922                 if (ou == NULL)
2923                         return;
2924                 lustre_swab_object_update(ou);
2925         }
2926 }
2927
2928 void lustre_swab_object_update_result(struct object_update_result *our)
2929 {
2930         __swab32s(&our->our_rc);
2931         __swab16s(&our->our_datalen);
2932         __swab16s(&our->our_padding);
2933 }
2934
2935 void lustre_swab_object_update_reply(struct object_update_reply *our)
2936 {
2937         size_t i;
2938
2939         __swab32s(&our->ourp_magic);
2940         __swab16s(&our->ourp_count);
2941         __swab16s(&our->ourp_padding);
2942         for (i = 0; i < our->ourp_count; i++) {
2943                 struct object_update_result *ourp;
2944
2945                 __swab16s(&our->ourp_lens[i]);
2946                 ourp = object_update_result_get(our, i, NULL);
2947                 if (ourp == NULL)
2948                         return;
2949                 lustre_swab_object_update_result(ourp);
2950         }
2951 }
2952
2953 void lustre_swab_out_update_header(struct out_update_header *ouh)
2954 {
2955         __swab32s(&ouh->ouh_magic);
2956         __swab32s(&ouh->ouh_count);
2957         __swab32s(&ouh->ouh_inline_length);
2958         __swab32s(&ouh->ouh_reply_size);
2959 }
2960 EXPORT_SYMBOL(lustre_swab_out_update_header);
2961
2962 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2963 {
2964         __swab32s(&oub->oub_size);
2965         __swab32s(&oub->oub_padding);
2966 }
2967 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2968
2969 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2970 {
2971         __swab64s(&msl->msl_flags);
2972 }
2973
2974 void lustre_swab_close_data(struct close_data *cd)
2975 {
2976         lustre_swab_lu_fid(&cd->cd_fid);
2977         __swab64s(&cd->cd_data_version);
2978 }
2979
2980 void lustre_swab_close_data_resync_done(struct close_data_resync_done *resync)
2981 {
2982         int i;
2983
2984         __swab32s(&resync->resync_count);
2985         /* after swab, resync_count must in CPU endian */
2986         if (resync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
2987                 for (i = 0; i < resync->resync_count; i++)
2988                         __swab32s(&resync->resync_ids_inline[i]);
2989         }
2990 }
2991 EXPORT_SYMBOL(lustre_swab_close_data_resync_done);
2992
2993 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2994 {
2995         __swab32s(&lr->lr_event);
2996         __swab32s(&lr->lr_index);
2997         __swab32s(&lr->lr_flags);
2998         __swab32s(&lr->lr_valid);
2999         __swab32s(&lr->lr_speed);
3000         __swab16s(&lr->lr_version);
3001         __swab16s(&lr->lr_active);
3002         __swab16s(&lr->lr_param);
3003         __swab16s(&lr->lr_async_windows);
3004         __swab32s(&lr->lr_flags);
3005         lustre_swab_lu_fid(&lr->lr_fid);
3006         lustre_swab_lu_fid(&lr->lr_fid2);
3007         __swab32s(&lr->lr_comp_id);
3008         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_0) == 0);
3009         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_1) == 0);
3010         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_2) == 0);
3011         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_3) == 0);
3012 }
3013
3014 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
3015 {
3016         __swab32s(&lr->lr_status);
3017         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_1) == 0);
3018         __swab64s(&lr->lr_repaired);
3019 }
3020
3021 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
3022 {
3023         lustre_swab_lu_fid(&rec->lor_fid);
3024         __swab32s(&rec->lor_uid);
3025         __swab32s(&rec->lor_gid);
3026 }
3027
3028 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
3029 {
3030         lustre_swab_lu_fid(&ent->loe_key);
3031         lustre_swab_orphan_rec(&ent->loe_rec);
3032 }
3033 EXPORT_SYMBOL(lustre_swab_orphan_ent);
3034
3035 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
3036 {
3037         lustre_swab_lu_fid(&ent->loe_key);
3038         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
3039         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
3040         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding) == 0);
3041 }
3042 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
3043
3044 void lustre_swab_orphan_ent_v3(struct lu_orphan_ent_v3 *ent)
3045 {
3046         lustre_swab_lu_fid(&ent->loe_key);
3047         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
3048         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
3049         __swab32s(&ent->loe_rec.lor_layout_version);
3050         __swab32s(&ent->loe_rec.lor_range);
3051         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding_1) == 0);
3052         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding_2) == 0);
3053 }
3054 EXPORT_SYMBOL(lustre_swab_orphan_ent_v3);
3055
3056 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
3057 {
3058         __swab16s(&ladvise->lla_advice);
3059         __swab16s(&ladvise->lla_value1);
3060         __swab32s(&ladvise->lla_value2);
3061         __swab64s(&ladvise->lla_start);
3062         __swab64s(&ladvise->lla_end);
3063         __swab32s(&ladvise->lla_value3);
3064         __swab32s(&ladvise->lla_value4);
3065 }
3066 EXPORT_SYMBOL(lustre_swab_ladvise);
3067
3068 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
3069 {
3070         __swab32s(&ladvise_hdr->lah_magic);
3071         __swab32s(&ladvise_hdr->lah_count);
3072         __swab64s(&ladvise_hdr->lah_flags);
3073         __swab32s(&ladvise_hdr->lah_value1);
3074         __swab32s(&ladvise_hdr->lah_value2);
3075         __swab64s(&ladvise_hdr->lah_value3);
3076 }
3077 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);