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 timeout_t 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
1294                 if (pb == NULL) {
1295                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1296                         return 0;
1297                 }
1298                 return pb->pb_timeout;
1299         }
1300         default:
1301                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1302                 return 0;
1303         }
1304 }
1305
1306 timeout_t lustre_msg_get_service_timeout(struct lustre_msg *msg)
1307 {
1308         switch (msg->lm_magic) {
1309         case LUSTRE_MSG_MAGIC_V2: {
1310                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1311
1312                 if (pb == NULL) {
1313                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1314                         return 0;
1315                 }
1316                 return pb->pb_service_time;
1317         }
1318         default:
1319                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1320                 return 0;
1321         }
1322 }
1323
1324 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1325 {
1326         switch (msg->lm_magic) {
1327         case LUSTRE_MSG_MAGIC_V2: {
1328                 struct ptlrpc_body *pb;
1329
1330                 /* the old pltrpc_body_v2 is smaller; doesn't include jobid */
1331                 if (msg->lm_buflens[MSG_PTLRPC_BODY_OFF] <
1332                     sizeof(struct ptlrpc_body))
1333                         return NULL;
1334
1335                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1336                                           sizeof(struct ptlrpc_body));
1337                 if (!pb)
1338                         return NULL;
1339
1340                 return pb->pb_jobid;
1341         }
1342         default:
1343                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1344                 return NULL;
1345         }
1346 }
1347 EXPORT_SYMBOL(lustre_msg_get_jobid);
1348
1349 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1350 {
1351         switch (msg->lm_magic) {
1352         case LUSTRE_MSG_MAGIC_V2:
1353                 return msg->lm_cksum;
1354         default:
1355                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1356                 return 0;
1357         }
1358 }
1359
1360 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1361 {
1362         switch (msg->lm_magic) {
1363         case LUSTRE_MSG_MAGIC_V2: {
1364                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1365                 if (pb == NULL) {
1366                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1367                         return 0;
1368                 }
1369                 return pb->pb_mbits;
1370         }
1371         default:
1372                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1373                 return 0;
1374         }
1375 }
1376
1377 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1378 {
1379         switch (msg->lm_magic) {
1380         case LUSTRE_MSG_MAGIC_V2: {
1381                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1382                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1383
1384                 unsigned int hsize = 4;
1385                 __u32 crc;
1386
1387                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1388                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1389                                        len, NULL, 0, (unsigned char *)&crc,
1390                                        &hsize);
1391                 return crc;
1392         }
1393         default:
1394                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1395                 return 0;
1396         }
1397 }
1398
1399 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1400 {
1401         switch (msg->lm_magic) {
1402         case LUSTRE_MSG_MAGIC_V2: {
1403                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1404                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1405                 pb->pb_handle = *handle;
1406                 return;
1407         }
1408         default:
1409                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1410         }
1411 }
1412
1413 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1414 {
1415         switch (msg->lm_magic) {
1416         case LUSTRE_MSG_MAGIC_V2: {
1417                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1418                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1419                 pb->pb_type = type;
1420                 return;
1421                 }
1422         default:
1423                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1424         }
1425 }
1426
1427 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1428 {
1429         switch (msg->lm_magic) {
1430         case LUSTRE_MSG_MAGIC_V2: {
1431                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1432                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1433                 pb->pb_opc = opc;
1434                 return;
1435         }
1436         default:
1437                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1438         }
1439 }
1440
1441 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1442 {
1443         switch (msg->lm_magic) {
1444         case LUSTRE_MSG_MAGIC_V2: {
1445                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1446                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1447                 pb->pb_last_xid = last_xid;
1448                 return;
1449         }
1450         default:
1451                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1452         }
1453 }
1454 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1455
1456 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1457 {
1458         switch (msg->lm_magic) {
1459         case LUSTRE_MSG_MAGIC_V2: {
1460                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1461                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1462                 pb->pb_tag = tag;
1463                 return;
1464         }
1465         default:
1466                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1467         }
1468 }
1469 EXPORT_SYMBOL(lustre_msg_set_tag);
1470
1471 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1472 {
1473         switch (msg->lm_magic) {
1474         case LUSTRE_MSG_MAGIC_V2: {
1475                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1476                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1477                 pb->pb_last_committed = last_committed;
1478                 return;
1479         }
1480         default:
1481                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1482         }
1483 }
1484
1485 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1486 {
1487         switch (msg->lm_magic) {
1488         case LUSTRE_MSG_MAGIC_V2: {
1489                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1490                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1491                 pb->pb_pre_versions[0] = versions[0];
1492                 pb->pb_pre_versions[1] = versions[1];
1493                 pb->pb_pre_versions[2] = versions[2];
1494                 pb->pb_pre_versions[3] = versions[3];
1495                 return;
1496         }
1497         default:
1498                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1499         }
1500 }
1501 EXPORT_SYMBOL(lustre_msg_set_versions);
1502
1503 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1504 {
1505         switch (msg->lm_magic) {
1506         case LUSTRE_MSG_MAGIC_V2: {
1507                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1508                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1509                 pb->pb_transno = transno;
1510                 return;
1511         }
1512         default:
1513                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1514         }
1515 }
1516 EXPORT_SYMBOL(lustre_msg_set_transno);
1517
1518 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1519 {
1520         switch (msg->lm_magic) {
1521         case LUSTRE_MSG_MAGIC_V2: {
1522                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1523                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1524                 pb->pb_status = status;
1525                 return;
1526         }
1527         default:
1528                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1529         }
1530 }
1531 EXPORT_SYMBOL(lustre_msg_set_status);
1532
1533 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1534 {
1535         switch (msg->lm_magic) {
1536         case LUSTRE_MSG_MAGIC_V2: {
1537                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1538                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1539                 pb->pb_conn_cnt = conn_cnt;
1540                 return;
1541         }
1542         default:
1543                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1544         }
1545 }
1546
1547 void lustre_msg_set_timeout(struct lustre_msg *msg, timeout_t timeout)
1548 {
1549         switch (msg->lm_magic) {
1550         case LUSTRE_MSG_MAGIC_V2: {
1551                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1552
1553                 LASSERT(timeout >= 0);
1554                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1555                 pb->pb_timeout = timeout;
1556                 return;
1557         }
1558         default:
1559                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1560         }
1561 }
1562
1563 void lustre_msg_set_service_timeout(struct lustre_msg *msg,
1564                                     timeout_t service_timeout)
1565 {
1566         switch (msg->lm_magic) {
1567         case LUSTRE_MSG_MAGIC_V2: {
1568                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1569
1570                 LASSERT(service_timeout >= 0);
1571                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1572                 pb->pb_service_time = service_timeout;
1573                 return;
1574         }
1575         default:
1576                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1577         }
1578 }
1579
1580 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1581 {
1582         switch (msg->lm_magic) {
1583         case LUSTRE_MSG_MAGIC_V2: {
1584                 __u32 opc = lustre_msg_get_opc(msg);
1585                 struct ptlrpc_body *pb;
1586
1587                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1588                  * See the comment in ptlrpc_request_pack(). */
1589                 if (!opc || opc == LDLM_BL_CALLBACK ||
1590                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1591                         return;
1592
1593                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1594                                        sizeof(struct ptlrpc_body));
1595                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1596
1597                 if (jobid != NULL)
1598                         memcpy(pb->pb_jobid, jobid, sizeof(pb->pb_jobid));
1599                 else if (pb->pb_jobid[0] == '\0')
1600                         lustre_get_jobid(pb->pb_jobid, sizeof(pb->pb_jobid));
1601                 return;
1602         }
1603         default:
1604                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1605         }
1606 }
1607 EXPORT_SYMBOL(lustre_msg_set_jobid);
1608
1609 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1610 {
1611         switch (msg->lm_magic) {
1612         case LUSTRE_MSG_MAGIC_V2:
1613                 msg->lm_cksum = cksum;
1614                 return;
1615         default:
1616                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1617         }
1618 }
1619
1620 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1621 {
1622         switch (msg->lm_magic) {
1623         case LUSTRE_MSG_MAGIC_V2: {
1624                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1625
1626                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1627                 pb->pb_mbits = mbits;
1628                 return;
1629         }
1630         default:
1631                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1632         }
1633 }
1634
1635 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1636 {
1637         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1638
1639         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1640                                          req->rq_pill.rc_area[RCL_SERVER]);
1641         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1642                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1643 }
1644 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1645
1646 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1647 {
1648         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1649         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1650                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1651 }
1652
1653 /**
1654  * Send a remote set_info_async.
1655  *
1656  * This may go from client to server or server to client.
1657  */
1658 int do_set_info_async(struct obd_import *imp,
1659                       int opcode, int version,
1660                       size_t keylen, void *key,
1661                       size_t vallen, void *val,
1662                       struct ptlrpc_request_set *set)
1663 {
1664         struct ptlrpc_request *req;
1665         char *tmp;
1666         int rc;
1667
1668         ENTRY;
1669
1670         req = ptlrpc_request_alloc(imp, KEY_IS(KEY_CHANGELOG_CLEAR) ?
1671                                                 &RQF_MDT_SET_INFO :
1672                                                 &RQF_OBD_SET_INFO);
1673         if (req == NULL)
1674                 RETURN(-ENOMEM);
1675
1676         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1677                              RCL_CLIENT, keylen);
1678         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1679                              RCL_CLIENT, vallen);
1680         rc = ptlrpc_request_pack(req, version, opcode);
1681         if (rc) {
1682                 ptlrpc_request_free(req);
1683                 RETURN(rc);
1684         }
1685
1686         if (KEY_IS(KEY_CHANGELOG_CLEAR))
1687                 do_pack_body(req);
1688
1689         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1690         memcpy(tmp, key, keylen);
1691         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1692         memcpy(tmp, val, vallen);
1693
1694         ptlrpc_request_set_replen(req);
1695
1696         if (set) {
1697                 ptlrpc_set_add_req(set, req);
1698                 ptlrpc_check_set(NULL, set);
1699         } else {
1700                 rc = ptlrpc_queue_wait(req);
1701                 ptlrpc_req_finished(req);
1702         }
1703
1704         RETURN(rc);
1705 }
1706 EXPORT_SYMBOL(do_set_info_async);
1707
1708 /* byte flipping routines for all wire types declared in
1709  * lustre_idl.h implemented here.
1710  */
1711 void lustre_swab_ptlrpc_body(struct ptlrpc_body *body)
1712 {
1713         __swab32s(&body->pb_type);
1714         __swab32s(&body->pb_version);
1715         __swab32s(&body->pb_opc);
1716         __swab32s(&body->pb_status);
1717         __swab64s(&body->pb_last_xid);
1718         __swab16s(&body->pb_tag);
1719         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding0) == 0);
1720         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding1) == 0);
1721         __swab64s(&body->pb_last_committed);
1722         __swab64s(&body->pb_transno);
1723         __swab32s(&body->pb_flags);
1724         __swab32s(&body->pb_op_flags);
1725         __swab32s(&body->pb_conn_cnt);
1726         __swab32s(&body->pb_timeout);
1727         __swab32s(&body->pb_service_time);
1728         __swab32s(&body->pb_limit);
1729         __swab64s(&body->pb_slv);
1730         __swab64s(&body->pb_pre_versions[0]);
1731         __swab64s(&body->pb_pre_versions[1]);
1732         __swab64s(&body->pb_pre_versions[2]);
1733         __swab64s(&body->pb_pre_versions[3]);
1734         __swab64s(&body->pb_mbits);
1735         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_0) == 0);
1736         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_1) == 0);
1737         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_2) == 0);
1738         /*
1739          * While we need to maintain compatibility between
1740          * clients and servers without ptlrpc_body_v2 (< 2.3)
1741          * do not swab any fields beyond pb_jobid, as we are
1742          * using this swab function for both ptlrpc_body
1743          * and ptlrpc_body_v2.
1744          */
1745         /* pb_jobid is an ASCII string and should not be swabbed */
1746         BUILD_BUG_ON(offsetof(typeof(*body), pb_jobid) == 0);
1747 }
1748
1749 void lustre_swab_connect(struct obd_connect_data *ocd)
1750 {
1751         __swab64s(&ocd->ocd_connect_flags);
1752         __swab32s(&ocd->ocd_version);
1753         __swab32s(&ocd->ocd_grant);
1754         __swab64s(&ocd->ocd_ibits_known);
1755         __swab32s(&ocd->ocd_index);
1756         __swab32s(&ocd->ocd_brw_size);
1757         /*
1758          * ocd_blocksize and ocd_inodespace don't need to be swabbed because
1759          * they are 8-byte values
1760          */
1761         __swab16s(&ocd->ocd_grant_tax_kb);
1762         __swab32s(&ocd->ocd_grant_max_blks);
1763         __swab64s(&ocd->ocd_transno);
1764         __swab32s(&ocd->ocd_group);
1765         __swab32s(&ocd->ocd_cksum_types);
1766         __swab32s(&ocd->ocd_instance);
1767         /*
1768          * Fields after ocd_cksum_types are only accessible by the receiver
1769          * if the corresponding flag in ocd_connect_flags is set. Accessing
1770          * any field after ocd_maxbytes on the receiver without a valid flag
1771          * may result in out-of-bound memory access and kernel oops.
1772          */
1773         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1774                 __swab32s(&ocd->ocd_max_easize);
1775         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1776                 __swab64s(&ocd->ocd_maxbytes);
1777         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1778                 __swab16s(&ocd->ocd_maxmodrpcs);
1779         BUILD_BUG_ON(offsetof(typeof(*ocd), padding0) == 0);
1780         BUILD_BUG_ON(offsetof(typeof(*ocd), padding1) == 0);
1781         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1782                 __swab64s(&ocd->ocd_connect_flags2);
1783         BUILD_BUG_ON(offsetof(typeof(*ocd), padding3) == 0);
1784         BUILD_BUG_ON(offsetof(typeof(*ocd), padding4) == 0);
1785         BUILD_BUG_ON(offsetof(typeof(*ocd), padding5) == 0);
1786         BUILD_BUG_ON(offsetof(typeof(*ocd), padding6) == 0);
1787         BUILD_BUG_ON(offsetof(typeof(*ocd), padding7) == 0);
1788         BUILD_BUG_ON(offsetof(typeof(*ocd), padding8) == 0);
1789         BUILD_BUG_ON(offsetof(typeof(*ocd), padding9) == 0);
1790         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingA) == 0);
1791         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingB) == 0);
1792         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingC) == 0);
1793         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingD) == 0);
1794         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingE) == 0);
1795         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingF) == 0);
1796 }
1797
1798 static void lustre_swab_ost_layout(struct ost_layout *ol)
1799 {
1800         __swab32s(&ol->ol_stripe_size);
1801         __swab32s(&ol->ol_stripe_count);
1802         __swab64s(&ol->ol_comp_start);
1803         __swab64s(&ol->ol_comp_end);
1804         __swab32s(&ol->ol_comp_id);
1805 }
1806
1807 void lustre_swab_obdo(struct obdo *o)
1808 {
1809         __swab64s(&o->o_valid);
1810         lustre_swab_ost_id(&o->o_oi);
1811         __swab64s(&o->o_parent_seq);
1812         __swab64s(&o->o_size);
1813         __swab64s(&o->o_mtime);
1814         __swab64s(&o->o_atime);
1815         __swab64s(&o->o_ctime);
1816         __swab64s(&o->o_blocks);
1817         __swab64s(&o->o_grant);
1818         __swab32s(&o->o_blksize);
1819         __swab32s(&o->o_mode);
1820         __swab32s(&o->o_uid);
1821         __swab32s(&o->o_gid);
1822         __swab32s(&o->o_flags);
1823         __swab32s(&o->o_nlink);
1824         __swab32s(&o->o_parent_oid);
1825         __swab32s(&o->o_misc);
1826         __swab64s(&o->o_ioepoch);
1827         __swab32s(&o->o_stripe_idx);
1828         __swab32s(&o->o_parent_ver);
1829         lustre_swab_ost_layout(&o->o_layout);
1830         __swab32s(&o->o_layout_version);
1831         __swab32s(&o->o_uid_h);
1832         __swab32s(&o->o_gid_h);
1833         __swab64s(&o->o_data_version);
1834         __swab32s(&o->o_projid);
1835         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_4) == 0);
1836         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_5) == 0);
1837         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_6) == 0);
1838
1839 }
1840 EXPORT_SYMBOL(lustre_swab_obdo);
1841
1842 void lustre_swab_obd_statfs(struct obd_statfs *os)
1843 {
1844         __swab64s(&os->os_type);
1845         __swab64s(&os->os_blocks);
1846         __swab64s(&os->os_bfree);
1847         __swab64s(&os->os_bavail);
1848         __swab64s(&os->os_files);
1849         __swab64s(&os->os_ffree);
1850         /* no need to swab os_fsid */
1851         __swab32s(&os->os_bsize);
1852         __swab32s(&os->os_namelen);
1853         __swab64s(&os->os_maxbytes);
1854         __swab32s(&os->os_state);
1855         __swab32s(&os->os_fprecreated);
1856         __swab32s(&os->os_granted);
1857         BUILD_BUG_ON(offsetof(typeof(*os), os_spare3) == 0);
1858         BUILD_BUG_ON(offsetof(typeof(*os), os_spare4) == 0);
1859         BUILD_BUG_ON(offsetof(typeof(*os), os_spare5) == 0);
1860         BUILD_BUG_ON(offsetof(typeof(*os), os_spare6) == 0);
1861         BUILD_BUG_ON(offsetof(typeof(*os), os_spare7) == 0);
1862         BUILD_BUG_ON(offsetof(typeof(*os), os_spare8) == 0);
1863         BUILD_BUG_ON(offsetof(typeof(*os), os_spare9) == 0);
1864 }
1865
1866 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1867 {
1868         lustre_swab_ost_id(&ioo->ioo_oid);
1869         __swab32s(&ioo->ioo_max_brw);
1870         __swab32s(&ioo->ioo_bufcnt);
1871 }
1872
1873 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1874 {
1875         __swab64s(&nbr->rnb_offset);
1876         __swab32s(&nbr->rnb_len);
1877         __swab32s(&nbr->rnb_flags);
1878 }
1879
1880 void lustre_swab_ost_body(struct ost_body *b)
1881 {
1882         lustre_swab_obdo(&b->oa);
1883 }
1884
1885 void lustre_swab_ost_last_id(u64 *id)
1886 {
1887         __swab64s(id);
1888 }
1889
1890 void lustre_swab_generic_32s(__u32 *val)
1891 {
1892         __swab32s(val);
1893 }
1894
1895 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1896 {
1897         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1898         __swab64s(&desc->gl_flags);
1899         __swab64s(&desc->gl_ver);
1900         __swab64s(&desc->gl_hardlimit);
1901         __swab64s(&desc->gl_softlimit);
1902         __swab64s(&desc->gl_time);
1903         BUILD_BUG_ON(offsetof(typeof(*desc), gl_pad2) == 0);
1904 }
1905 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1906
1907 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1908 {
1909         __swab32s(&desc->lgbd_status);
1910         __swab32s(&desc->lgbd_timeout);
1911         BUILD_BUG_ON(offsetof(typeof(*desc), lgbd_padding) == 0);
1912 }
1913 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1914
1915 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1916 {
1917         __swab64s(&lvb->lvb_size);
1918         __swab64s(&lvb->lvb_mtime);
1919         __swab64s(&lvb->lvb_atime);
1920         __swab64s(&lvb->lvb_ctime);
1921         __swab64s(&lvb->lvb_blocks);
1922 }
1923 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1924
1925 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1926 {
1927         __swab64s(&lvb->lvb_size);
1928         __swab64s(&lvb->lvb_mtime);
1929         __swab64s(&lvb->lvb_atime);
1930         __swab64s(&lvb->lvb_ctime);
1931         __swab64s(&lvb->lvb_blocks);
1932         __swab32s(&lvb->lvb_mtime_ns);
1933         __swab32s(&lvb->lvb_atime_ns);
1934         __swab32s(&lvb->lvb_ctime_ns);
1935         __swab32s(&lvb->lvb_padding);
1936 }
1937 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1938
1939 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1940 {
1941         __swab64s(&lvb->lvb_flags);
1942         __swab64s(&lvb->lvb_id_may_rel);
1943         __swab64s(&lvb->lvb_id_rel);
1944         __swab64s(&lvb->lvb_id_qunit);
1945         __swab64s(&lvb->lvb_pad1);
1946 }
1947 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1948
1949 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1950 {
1951         __swab32s(&lvb->lvb_status);
1952         __swab32s(&lvb->lvb_index);
1953         BUILD_BUG_ON(offsetof(typeof(*lvb), lvb_padding) == 0);
1954 }
1955 EXPORT_SYMBOL(lustre_swab_barrier_lvb);
1956
1957 void lustre_swab_mdt_body(struct mdt_body *b)
1958 {
1959         lustre_swab_lu_fid(&b->mbo_fid1);
1960         lustre_swab_lu_fid(&b->mbo_fid2);
1961         /* handle is opaque */
1962         __swab64s(&b->mbo_valid);
1963         __swab64s(&b->mbo_size);
1964         __swab64s(&b->mbo_mtime);
1965         __swab64s(&b->mbo_atime);
1966         __swab64s(&b->mbo_ctime);
1967         __swab64s(&b->mbo_blocks);
1968         __swab64s(&b->mbo_version);
1969         __swab64s(&b->mbo_t_state);
1970         __swab32s(&b->mbo_fsuid);
1971         __swab32s(&b->mbo_fsgid);
1972         __swab32s(&b->mbo_capability);
1973         __swab32s(&b->mbo_mode);
1974         __swab32s(&b->mbo_uid);
1975         __swab32s(&b->mbo_gid);
1976         __swab32s(&b->mbo_flags);
1977         __swab32s(&b->mbo_rdev);
1978         __swab32s(&b->mbo_nlink);
1979         __swab32s(&b->mbo_layout_gen);
1980         __swab32s(&b->mbo_suppgid);
1981         __swab32s(&b->mbo_eadatasize);
1982         __swab32s(&b->mbo_aclsize);
1983         __swab32s(&b->mbo_max_mdsize);
1984         BUILD_BUG_ON(offsetof(typeof(*b), mbo_unused3) == 0);
1985         __swab32s(&b->mbo_uid_h);
1986         __swab32s(&b->mbo_gid_h);
1987         __swab32s(&b->mbo_projid);
1988         __swab64s(&b->mbo_dom_size);
1989         __swab64s(&b->mbo_dom_blocks);
1990         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_8) == 0);
1991         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_9) == 0);
1992         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_10) == 0);
1993 }
1994
1995 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1996 {
1997         /* mio_open_handle is opaque */
1998         BUILD_BUG_ON(offsetof(typeof(*b), mio_unused1) == 0);
1999         BUILD_BUG_ON(offsetof(typeof(*b), mio_unused2) == 0);
2000         BUILD_BUG_ON(offsetof(typeof(*b), mio_padding) == 0);
2001 }
2002
2003 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
2004 {
2005         int i;
2006
2007         __swab32s(&mti->mti_lustre_ver);
2008         __swab32s(&mti->mti_stripe_index);
2009         __swab32s(&mti->mti_config_ver);
2010         __swab32s(&mti->mti_flags);
2011         __swab32s(&mti->mti_instance);
2012         __swab32s(&mti->mti_nid_count);
2013         BUILD_BUG_ON(sizeof(lnet_nid_t) != sizeof(__u64));
2014         for (i = 0; i < MTI_NIDS_MAX; i++)
2015                 __swab64s(&mti->mti_nids[i]);
2016 }
2017
2018 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
2019 {
2020         __u8 i;
2021
2022         __swab64s(&entry->mne_version);
2023         __swab32s(&entry->mne_instance);
2024         __swab32s(&entry->mne_index);
2025         __swab32s(&entry->mne_length);
2026
2027         /* mne_nid_(count|type) must be one byte size because we're gonna
2028          * access it w/o swapping. */
2029         BUILD_BUG_ON(sizeof(entry->mne_nid_count) != sizeof(__u8));
2030         BUILD_BUG_ON(sizeof(entry->mne_nid_type) != sizeof(__u8));
2031
2032         /* remove this assertion if ipv6 is supported. */
2033         LASSERT(entry->mne_nid_type == 0);
2034         for (i = 0; i < entry->mne_nid_count; i++) {
2035                 BUILD_BUG_ON(sizeof(lnet_nid_t) != sizeof(__u64));
2036                 __swab64s(&entry->u.nids[i]);
2037         }
2038 }
2039 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
2040
2041 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
2042 {
2043         __swab64s(&body->mcb_offset);
2044         __swab32s(&body->mcb_units);
2045         __swab16s(&body->mcb_type);
2046 }
2047
2048 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
2049 {
2050         __swab64s(&body->mcr_offset);
2051         __swab64s(&body->mcr_size);
2052 }
2053
2054 static void lustre_swab_obd_dqinfo(struct obd_dqinfo *i)
2055 {
2056         __swab64s(&i->dqi_bgrace);
2057         __swab64s(&i->dqi_igrace);
2058         __swab32s(&i->dqi_flags);
2059         __swab32s(&i->dqi_valid);
2060 }
2061
2062 static void lustre_swab_obd_dqblk(struct obd_dqblk *b)
2063 {
2064         __swab64s(&b->dqb_ihardlimit);
2065         __swab64s(&b->dqb_isoftlimit);
2066         __swab64s(&b->dqb_curinodes);
2067         __swab64s(&b->dqb_bhardlimit);
2068         __swab64s(&b->dqb_bsoftlimit);
2069         __swab64s(&b->dqb_curspace);
2070         __swab64s(&b->dqb_btime);
2071         __swab64s(&b->dqb_itime);
2072         __swab32s(&b->dqb_valid);
2073         BUILD_BUG_ON(offsetof(typeof(*b), dqb_padding) == 0);
2074 }
2075
2076 void lustre_swab_obd_quotactl(struct obd_quotactl *q)
2077 {
2078         __swab32s(&q->qc_cmd);
2079         __swab32s(&q->qc_type);
2080         __swab32s(&q->qc_id);
2081         __swab32s(&q->qc_stat);
2082         lustre_swab_obd_dqinfo(&q->qc_dqinfo);
2083         lustre_swab_obd_dqblk(&q->qc_dqblk);
2084 }
2085
2086 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2087 {
2088         lustre_swab_lu_fid(&gf->gf_fid);
2089         __swab64s(&gf->gf_recno);
2090         __swab32s(&gf->gf_linkno);
2091         __swab32s(&gf->gf_pathlen);
2092 }
2093 EXPORT_SYMBOL(lustre_swab_fid2path);
2094
2095 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
2096 {
2097         __swab64s(&fm_extent->fe_logical);
2098         __swab64s(&fm_extent->fe_physical);
2099         __swab64s(&fm_extent->fe_length);
2100         __swab32s(&fm_extent->fe_flags);
2101         __swab32s(&fm_extent->fe_device);
2102 }
2103
2104 static void lustre_swab_fiemap_hdr(struct fiemap *fiemap)
2105 {
2106         __swab64s(&fiemap->fm_start);
2107         __swab64s(&fiemap->fm_length);
2108         __swab32s(&fiemap->fm_flags);
2109         __swab32s(&fiemap->fm_mapped_extents);
2110         __swab32s(&fiemap->fm_extent_count);
2111         __swab32s(&fiemap->fm_reserved);
2112 }
2113
2114 int lustre_swab_fiemap(struct fiemap *fiemap, __u32 len)
2115 {
2116         __u32 i, size, count;
2117
2118         lustre_swab_fiemap_hdr(fiemap);
2119
2120         size = fiemap_count_to_size(fiemap->fm_mapped_extents);
2121         count = fiemap->fm_mapped_extents;
2122         if (unlikely(size > len)) {
2123                 count = (len - sizeof(struct fiemap)) /
2124                         sizeof(struct fiemap_extent);
2125                 fiemap->fm_mapped_extents = count;
2126                 size = -EOVERFLOW;
2127         }
2128         /* still swab extents as we cannot yet pass rc to callers */
2129         for (i = 0; i < count; i++)
2130                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2131
2132         return size;
2133 }
2134
2135 void lustre_swab_fiemap_info_key(struct ll_fiemap_info_key *fiemap_info)
2136 {
2137         lustre_swab_obdo(&fiemap_info->lfik_oa);
2138         lustre_swab_fiemap_hdr(&fiemap_info->lfik_fiemap);
2139 }
2140
2141 void lustre_swab_idx_info(struct idx_info *ii)
2142 {
2143         __swab32s(&ii->ii_magic);
2144         __swab32s(&ii->ii_flags);
2145         __swab16s(&ii->ii_count);
2146         __swab32s(&ii->ii_attrs);
2147         lustre_swab_lu_fid(&ii->ii_fid);
2148         __swab64s(&ii->ii_version);
2149         __swab64s(&ii->ii_hash_start);
2150         __swab64s(&ii->ii_hash_end);
2151         __swab16s(&ii->ii_keysize);
2152         __swab16s(&ii->ii_recsize);
2153 }
2154
2155 void lustre_swab_lip_header(struct lu_idxpage *lip)
2156 {
2157         /* swab header */
2158         __swab32s(&lip->lip_magic);
2159         __swab16s(&lip->lip_flags);
2160         __swab16s(&lip->lip_nr);
2161 }
2162 EXPORT_SYMBOL(lustre_swab_lip_header);
2163
2164 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2165 {
2166         __swab32s(&rr->rr_opcode);
2167         __swab32s(&rr->rr_cap);
2168         __swab32s(&rr->rr_fsuid);
2169         /* rr_fsuid_h is unused */
2170         __swab32s(&rr->rr_fsgid);
2171         /* rr_fsgid_h is unused */
2172         __swab32s(&rr->rr_suppgid1);
2173         /* rr_suppgid1_h is unused */
2174         __swab32s(&rr->rr_suppgid2);
2175         /* rr_suppgid2_h is unused */
2176         lustre_swab_lu_fid(&rr->rr_fid1);
2177         lustre_swab_lu_fid(&rr->rr_fid2);
2178         __swab64s(&rr->rr_mtime);
2179         __swab64s(&rr->rr_atime);
2180         __swab64s(&rr->rr_ctime);
2181         __swab64s(&rr->rr_size);
2182         __swab64s(&rr->rr_blocks);
2183         __swab32s(&rr->rr_bias);
2184         __swab32s(&rr->rr_mode);
2185         __swab32s(&rr->rr_flags);
2186         __swab32s(&rr->rr_flags_h);
2187         __swab32s(&rr->rr_umask);
2188         __swab16s(&rr->rr_mirror_id);
2189
2190         BUILD_BUG_ON(offsetof(typeof(*rr), rr_padding_4) == 0);
2191 };
2192
2193 void lustre_swab_lov_desc(struct lov_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_stripe_size);
2200         __swab64s(&ld->ld_default_stripe_offset);
2201         __swab32s(&ld->ld_qos_maxage);
2202         /* uuid endian insensitive */
2203 }
2204 EXPORT_SYMBOL(lustre_swab_lov_desc);
2205
2206 void lustre_swab_lmv_desc(struct lmv_desc *ld)
2207 {
2208         __swab32s(&ld->ld_tgt_count);
2209         __swab32s(&ld->ld_active_tgt_count);
2210         __swab32s(&ld->ld_default_stripe_count);
2211         __swab32s(&ld->ld_pattern);
2212         __swab64s(&ld->ld_default_hash_size);
2213         __swab32s(&ld->ld_qos_maxage);
2214         /* uuid endian insensitive */
2215 }
2216
2217 /* This structure is always in little-endian */
2218 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2219 {
2220         int i;
2221
2222         __swab32s(&lmm1->lmv_magic);
2223         __swab32s(&lmm1->lmv_stripe_count);
2224         __swab32s(&lmm1->lmv_master_mdt_index);
2225         __swab32s(&lmm1->lmv_hash_type);
2226         __swab32s(&lmm1->lmv_layout_version);
2227         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2228                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2229 }
2230
2231 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2232 {
2233         switch (lmm->lmv_magic) {
2234         case LMV_MAGIC_V1:
2235                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2236                 break;
2237         default:
2238                 break;
2239         }
2240 }
2241 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2242
2243 void lustre_swab_lmv_user_md_objects(struct lmv_user_mds_data *lmd,
2244                                      int stripe_count)
2245 {
2246         int i;
2247
2248         for (i = 0; i < stripe_count; i++)
2249                 __swab32s(&(lmd[i].lum_mds));
2250 }
2251 EXPORT_SYMBOL(lustre_swab_lmv_user_md_objects);
2252
2253
2254 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2255 {
2256         __u32 count;
2257
2258         if (lum->lum_magic == LMV_MAGIC_FOREIGN) {
2259                 __swab32s(&lum->lum_magic);
2260                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_length);
2261                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_type);
2262                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_flags);
2263                 return;
2264         }
2265
2266         count = lum->lum_stripe_count;
2267         __swab32s(&lum->lum_magic);
2268         __swab32s(&lum->lum_stripe_count);
2269         __swab32s(&lum->lum_stripe_offset);
2270         __swab32s(&lum->lum_hash_type);
2271         __swab32s(&lum->lum_type);
2272         BUILD_BUG_ON(offsetof(typeof(*lum), lum_padding1) == 0);
2273         switch (lum->lum_magic) {
2274         case LMV_USER_MAGIC_SPECIFIC:
2275                 count = lum->lum_stripe_count;
2276                 /* fallthrough */
2277         case __swab32(LMV_USER_MAGIC_SPECIFIC):
2278                 lustre_swab_lmv_user_md_objects(lum->lum_objects, count);
2279                 break;
2280         default:
2281                 break;
2282         }
2283 }
2284 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2285
2286 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2287                               const char *msg)
2288 {
2289         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2290         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2291         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2292         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2293         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2294         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2295         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2296         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2297                lum->lmm_stripe_offset);
2298         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2299                 struct lov_user_md_v3 *v3 = (void *)lum;
2300                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2301         }
2302         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2303                 struct lov_user_md_v3 *v3 = (void *)lum;
2304                 int i;
2305
2306                 if (v3->lmm_pool_name[0] != '\0')
2307                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2308
2309                 CDEBUG(lvl, "\ttarget list:\n");
2310                 for (i = 0; i < v3->lmm_stripe_count; i++)
2311                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2312         }
2313 }
2314
2315 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2316                           const char *msg)
2317 {
2318         struct lov_comp_md_v1   *comp_v1;
2319         int                      i;
2320
2321         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2322                 return;
2323
2324         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2325             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2326                 lustre_print_v1v3(lvl, lum, msg);
2327                 return;
2328         }
2329
2330         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2331                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2332                 return;
2333         }
2334
2335         comp_v1 = (struct lov_comp_md_v1 *)lum;
2336         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2337         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2338         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2339         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2340         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2341         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2342         CDEBUG(lvl, "\tlcm_mirror_count: %#x\n\n", comp_v1->lcm_mirror_count);
2343
2344         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2345                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2346                 struct lov_user_md *v1;
2347
2348                 CDEBUG(lvl, "\tentry %d:\n", i);
2349                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2350                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2351                 if (ent->lcme_flags & LCME_FL_NOSYNC)
2352                         CDEBUG(lvl, "\tlcme_timestamp: %llu\n",
2353                                         ent->lcme_timestamp);
2354                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2355                        ent->lcme_extent.e_start);
2356                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2357                        ent->lcme_extent.e_end);
2358                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2359                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2360
2361                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2362                                 comp_v1->lcm_entries[i].lcme_offset);
2363                 lustre_print_v1v3(lvl, v1, msg);
2364         }
2365 }
2366 EXPORT_SYMBOL(lustre_print_user_md);
2367
2368 static void lustre_swab_lmm_oi(struct ost_id *oi)
2369 {
2370         __swab64s(&oi->oi.oi_id);
2371         __swab64s(&oi->oi.oi_seq);
2372 }
2373
2374 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2375 {
2376         ENTRY;
2377         __swab32s(&lum->lmm_magic);
2378         __swab32s(&lum->lmm_pattern);
2379         lustre_swab_lmm_oi(&lum->lmm_oi);
2380         __swab32s(&lum->lmm_stripe_size);
2381         __swab16s(&lum->lmm_stripe_count);
2382         __swab16s(&lum->lmm_stripe_offset);
2383         EXIT;
2384 }
2385
2386 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2387 {
2388         ENTRY;
2389         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2390         lustre_swab_lov_user_md_common(lum);
2391         EXIT;
2392 }
2393 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2394
2395 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2396 {
2397         ENTRY;
2398         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2399         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2400         /* lmm_pool_name nothing to do with char */
2401         EXIT;
2402 }
2403 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2404
2405 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2406 {
2407         struct lov_comp_md_entry_v1     *ent;
2408         struct lov_user_md_v1   *v1;
2409         struct lov_user_md_v3   *v3;
2410         int     i;
2411         bool    cpu_endian;
2412         __u32   off, size;
2413         __u16   ent_count, stripe_count;
2414         ENTRY;
2415
2416         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2417         ent_count = lum->lcm_entry_count;
2418         if (!cpu_endian)
2419                 __swab16s(&ent_count);
2420
2421         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2422         __swab32s(&lum->lcm_magic);
2423         __swab32s(&lum->lcm_size);
2424         __swab32s(&lum->lcm_layout_gen);
2425         __swab16s(&lum->lcm_flags);
2426         __swab16s(&lum->lcm_entry_count);
2427         __swab16s(&lum->lcm_mirror_count);
2428         BUILD_BUG_ON(offsetof(typeof(*lum), lcm_padding1) == 0);
2429         BUILD_BUG_ON(offsetof(typeof(*lum), lcm_padding2) == 0);
2430
2431         for (i = 0; i < ent_count; i++) {
2432                 ent = &lum->lcm_entries[i];
2433                 off = ent->lcme_offset;
2434                 size = ent->lcme_size;
2435
2436                 if (!cpu_endian) {
2437                         __swab32s(&off);
2438                         __swab32s(&size);
2439                 }
2440                 __swab32s(&ent->lcme_id);
2441                 __swab32s(&ent->lcme_flags);
2442                 __swab64s(&ent->lcme_timestamp);
2443                 __swab64s(&ent->lcme_extent.e_start);
2444                 __swab64s(&ent->lcme_extent.e_end);
2445                 __swab32s(&ent->lcme_offset);
2446                 __swab32s(&ent->lcme_size);
2447                 __swab32s(&ent->lcme_layout_gen);
2448                 BUILD_BUG_ON(offsetof(typeof(*ent), lcme_padding_1) == 0);
2449
2450                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2451                 stripe_count = v1->lmm_stripe_count;
2452                 if (!cpu_endian)
2453                         __swab16s(&stripe_count);
2454
2455                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2456                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2457                         lustre_swab_lov_user_md_v1(v1);
2458                         if (size > sizeof(*v1))
2459                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2460                                                                 stripe_count);
2461                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2462                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2463                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2464                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2465                         v3 = (struct lov_user_md_v3 *)v1;
2466                         lustre_swab_lov_user_md_v3(v3);
2467                         if (size > sizeof(*v3))
2468                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2469                                                                 stripe_count);
2470                 } else {
2471                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2472                 }
2473         }
2474 }
2475 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2476
2477 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2478                                      int stripe_count)
2479 {
2480         int i;
2481
2482         ENTRY;
2483         for (i = 0; i < stripe_count; i++) {
2484                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2485                 __swab32s(&(lod[i].l_ost_gen));
2486                 __swab32s(&(lod[i].l_ost_idx));
2487         }
2488         EXIT;
2489 }
2490 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2491
2492 void lustre_swab_lov_user_md(struct lov_user_md *lum, size_t size)
2493 {
2494         struct lov_user_md_v1 *v1;
2495         struct lov_user_md_v3 *v3;
2496         struct lov_foreign_md *lfm;
2497         __u16 stripe_count;
2498         ENTRY;
2499
2500         CDEBUG(D_IOCTL, "swabbing lov_user_md\n");
2501         switch (lum->lmm_magic) {
2502         case __swab32(LOV_MAGIC_V1):
2503         case LOV_USER_MAGIC_V1:
2504         {
2505                 v1 = (struct lov_user_md_v1 *)lum;
2506                 stripe_count = v1->lmm_stripe_count;
2507
2508                 if (lum->lmm_magic != LOV_USER_MAGIC_V1)
2509                         __swab16s(&stripe_count);
2510
2511                 lustre_swab_lov_user_md_v1(v1);
2512                 if (size > sizeof(*v1))
2513                         lustre_swab_lov_user_md_objects(v1->lmm_objects,
2514                                                         stripe_count);
2515
2516                 break;
2517         }
2518         case __swab32(LOV_MAGIC_V3):
2519         case LOV_USER_MAGIC_V3:
2520         {
2521                 v3 = (struct lov_user_md_v3 *)lum;
2522                 stripe_count = v3->lmm_stripe_count;
2523
2524                 if (lum->lmm_magic != LOV_USER_MAGIC_V3)
2525                         __swab16s(&stripe_count);
2526
2527                 lustre_swab_lov_user_md_v3(v3);
2528                 if (size > sizeof(*v3))
2529                         lustre_swab_lov_user_md_objects(v3->lmm_objects,
2530                                                         stripe_count);
2531                 break;
2532         }
2533         case __swab32(LOV_USER_MAGIC_SPECIFIC):
2534         case LOV_USER_MAGIC_SPECIFIC:
2535         {
2536                 v3 = (struct lov_user_md_v3 *)lum;
2537                 stripe_count = v3->lmm_stripe_count;
2538
2539                 if (lum->lmm_magic != LOV_USER_MAGIC_SPECIFIC)
2540                         __swab16s(&stripe_count);
2541
2542                 lustre_swab_lov_user_md_v3(v3);
2543                 lustre_swab_lov_user_md_objects(v3->lmm_objects, stripe_count);
2544                 break;
2545         }
2546         case __swab32(LOV_MAGIC_COMP_V1):
2547         case LOV_USER_MAGIC_COMP_V1:
2548                 lustre_swab_lov_comp_md_v1((struct lov_comp_md_v1 *)lum);
2549                 break;
2550         case __swab32(LOV_MAGIC_FOREIGN):
2551         case LOV_USER_MAGIC_FOREIGN:
2552         {
2553                 lfm = (struct lov_foreign_md *)lum;
2554                 __swab32s(&lfm->lfm_magic);
2555                 __swab32s(&lfm->lfm_length);
2556                 __swab32s(&lfm->lfm_type);
2557                 __swab32s(&lfm->lfm_flags);
2558                 break;
2559         }
2560         default:
2561                 CDEBUG(D_IOCTL, "Invalid LOV magic %08x\n", lum->lmm_magic);
2562         }
2563 }
2564 EXPORT_SYMBOL(lustre_swab_lov_user_md);
2565
2566 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2567 {
2568         ENTRY;
2569         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2570         __swab32s(&lmm->lmm_magic);
2571         __swab32s(&lmm->lmm_pattern);
2572         lustre_swab_lmm_oi(&lmm->lmm_oi);
2573         __swab32s(&lmm->lmm_stripe_size);
2574         __swab16s(&lmm->lmm_stripe_count);
2575         __swab16s(&lmm->lmm_layout_gen);
2576         EXIT;
2577 }
2578 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2579
2580 void lustre_swab_ldlm_res_id(struct ldlm_res_id *id)
2581 {
2582         int i;
2583
2584         for (i = 0; i < RES_NAME_SIZE; i++)
2585                 __swab64s(&id->name[i]);
2586 }
2587
2588 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2589 {
2590         /* the lock data is a union and the first two fields are always an
2591          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2592          * data the same way.
2593          */
2594         __swab64s(&d->l_extent.start);
2595         __swab64s(&d->l_extent.end);
2596         __swab64s(&d->l_extent.gid);
2597         __swab64s(&d->l_flock.lfw_owner);
2598         __swab32s(&d->l_flock.lfw_pid);
2599 }
2600
2601 void lustre_swab_ldlm_intent(struct ldlm_intent *i)
2602 {
2603         __swab64s(&i->opc);
2604 }
2605
2606 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2607 {
2608         __swab32s(&r->lr_type);
2609         BUILD_BUG_ON(offsetof(typeof(*r), lr_pad) == 0);
2610         lustre_swab_ldlm_res_id(&r->lr_name);
2611 }
2612
2613 void lustre_swab_ldlm_lock_desc(struct ldlm_lock_desc *l)
2614 {
2615         lustre_swab_ldlm_resource_desc(&l->l_resource);
2616         __swab32s(&l->l_req_mode);
2617         __swab32s(&l->l_granted_mode);
2618         lustre_swab_ldlm_policy_data(&l->l_policy_data);
2619 }
2620
2621 void lustre_swab_ldlm_request(struct ldlm_request *rq)
2622 {
2623         __swab32s(&rq->lock_flags);
2624         lustre_swab_ldlm_lock_desc(&rq->lock_desc);
2625         __swab32s(&rq->lock_count);
2626         /* lock_handle[] opaque */
2627 }
2628
2629 void lustre_swab_ldlm_reply(struct ldlm_reply *r)
2630 {
2631         __swab32s(&r->lock_flags);
2632         BUILD_BUG_ON(offsetof(typeof(*r), lock_padding) == 0);
2633         lustre_swab_ldlm_lock_desc(&r->lock_desc);
2634         /* lock_handle opaque */
2635         __swab64s(&r->lock_policy_res1);
2636         __swab64s(&r->lock_policy_res2);
2637 }
2638
2639 void lustre_swab_quota_body(struct quota_body *b)
2640 {
2641         lustre_swab_lu_fid(&b->qb_fid);
2642         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2643         __swab32s(&b->qb_flags);
2644         __swab64s(&b->qb_count);
2645         __swab64s(&b->qb_usage);
2646         __swab64s(&b->qb_slv_ver);
2647 }
2648
2649 /* Dump functions */
2650 void dump_ioo(struct obd_ioobj *ioo)
2651 {
2652         CDEBUG(D_RPCTRACE,
2653                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2654                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2655                ioo->ioo_bufcnt);
2656 }
2657
2658 void dump_rniobuf(struct niobuf_remote *nb)
2659 {
2660         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2661                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2662 }
2663
2664 void dump_obdo(struct obdo *oa)
2665 {
2666         u64 valid = oa->o_valid;
2667
2668         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2669         if (valid & OBD_MD_FLID)
2670                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2671         if (valid & OBD_MD_FLFID)
2672                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2673                        oa->o_parent_seq);
2674         if (valid & OBD_MD_FLSIZE)
2675                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2676         if (valid & OBD_MD_FLMTIME)
2677                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2678         if (valid & OBD_MD_FLATIME)
2679                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2680         if (valid & OBD_MD_FLCTIME)
2681                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2682         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2683                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2684         if (valid & OBD_MD_FLGRANT)
2685                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2686         if (valid & OBD_MD_FLBLKSZ)
2687                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2688         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2689                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2690                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2691                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2692         if (valid & OBD_MD_FLUID)
2693                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2694         if (valid & OBD_MD_FLUID)
2695                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2696         if (valid & OBD_MD_FLGID)
2697                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2698         if (valid & OBD_MD_FLGID)
2699                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2700         if (valid & OBD_MD_FLFLAGS)
2701                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2702         if (valid & OBD_MD_FLNLINK)
2703                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2704         else if (valid & OBD_MD_FLCKSUM)
2705                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2706                        oa->o_nlink);
2707         if (valid & OBD_MD_FLPARENT)
2708                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2709                        oa->o_parent_oid);
2710         if (valid & OBD_MD_FLFID) {
2711                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2712                        oa->o_stripe_idx);
2713                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2714                        oa->o_parent_ver);
2715         }
2716         if (valid & OBD_MD_FLHANDLE)
2717                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2718                        oa->o_handle.cookie);
2719 }
2720
2721 void dump_ost_body(struct ost_body *ob)
2722 {
2723         dump_obdo(&ob->oa);
2724 }
2725
2726 void dump_rcs(__u32 *rc)
2727 {
2728         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2729 }
2730
2731 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2732 {
2733         LASSERT(req->rq_reqmsg);
2734
2735         switch (req->rq_reqmsg->lm_magic) {
2736         case LUSTRE_MSG_MAGIC_V2:
2737                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2738         default:
2739                 CERROR("bad lustre msg magic: %#08X\n",
2740                        req->rq_reqmsg->lm_magic);
2741         }
2742         return 0;
2743 }
2744
2745 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2746 {
2747         if (unlikely(!req->rq_repmsg))
2748                 return 0;
2749
2750         switch (req->rq_repmsg->lm_magic) {
2751         case LUSTRE_MSG_MAGIC_V2:
2752                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2753         default:
2754                 /* uninitialized yet */
2755                 return 0;
2756         }
2757 }
2758
2759 void _debug_req(struct ptlrpc_request *req,
2760                 struct libcfs_debug_msg_data *msgdata, const char *fmt, ...)
2761 {
2762         bool req_ok = req->rq_reqmsg != NULL;
2763         bool rep_ok = false;
2764         lnet_nid_t nid = LNET_NID_ANY;
2765         struct va_format vaf;
2766         va_list args;
2767         int rep_flags = -1;
2768         int rep_status = -1;
2769
2770         spin_lock(&req->rq_early_free_lock);
2771         if (req->rq_repmsg)
2772                 rep_ok = true;
2773
2774         if (ptlrpc_req_need_swab(req)) {
2775                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2776                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2777         }
2778
2779         if (rep_ok) {
2780                 rep_flags = lustre_msg_get_flags(req->rq_repmsg);
2781                 rep_status = lustre_msg_get_status(req->rq_repmsg);
2782         }
2783         spin_unlock(&req->rq_early_free_lock);
2784
2785         if (req->rq_import && req->rq_import->imp_connection)
2786                 nid = req->rq_import->imp_connection->c_peer.nid;
2787         else if (req->rq_export && req->rq_export->exp_connection)
2788                 nid = req->rq_export->exp_connection->c_peer.nid;
2789
2790         va_start(args, fmt);
2791         vaf.fmt = fmt;
2792         vaf.va = &args;
2793         libcfs_debug_msg(msgdata,
2794                          "%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",
2795                          &vaf,
2796                          req, req->rq_xid, req->rq_transno,
2797                          req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2798                          req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2799                          req->rq_import ?
2800                          req->rq_import->imp_obd->obd_name :
2801                          req->rq_export ?
2802                          req->rq_export->exp_client_uuid.uuid :
2803                          "<?>",
2804                          libcfs_nid2str(nid),
2805                          req->rq_request_portal, req->rq_reply_portal,
2806                          req->rq_reqlen, req->rq_replen,
2807                          req->rq_early_count, (s64)req->rq_timedout,
2808                          (s64)req->rq_deadline,
2809                          atomic_read(&req->rq_refcount),
2810                          DEBUG_REQ_FLAGS(req),
2811                          req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2812                          rep_flags, req->rq_status, rep_status,
2813                          req_ok ? lustre_msg_get_jobid(req->rq_reqmsg) ?: ""
2814                                 : "");
2815         va_end(args);
2816 }
2817 EXPORT_SYMBOL(_debug_req);
2818
2819 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2820 {
2821         __swab32s(&state->hus_states);
2822         __swab32s(&state->hus_archive_id);
2823 }
2824
2825 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2826 {
2827         __swab32s(&hss->hss_valid);
2828         __swab64s(&hss->hss_setmask);
2829         __swab64s(&hss->hss_clearmask);
2830         __swab32s(&hss->hss_archive_id);
2831 }
2832
2833 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2834 {
2835         __swab64s(&extent->offset);
2836         __swab64s(&extent->length);
2837 }
2838
2839 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2840 {
2841         __swab32s(&action->hca_state);
2842         __swab32s(&action->hca_action);
2843         lustre_swab_hsm_extent(&action->hca_location);
2844 }
2845
2846 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2847 {
2848         lustre_swab_lu_fid(&hui->hui_fid);
2849         lustre_swab_hsm_extent(&hui->hui_extent);
2850 }
2851
2852 void lustre_swab_lu_extent(struct lu_extent *le)
2853 {
2854         __swab64s(&le->e_start);
2855         __swab64s(&le->e_end);
2856 }
2857
2858 void lustre_swab_layout_intent(struct layout_intent *li)
2859 {
2860         __swab32s(&li->li_opc);
2861         __swab32s(&li->li_flags);
2862         lustre_swab_lu_extent(&li->li_extent);
2863 }
2864
2865 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2866 {
2867         lustre_swab_lu_fid(&hpk->hpk_fid);
2868         __swab64s(&hpk->hpk_cookie);
2869         __swab64s(&hpk->hpk_extent.offset);
2870         __swab64s(&hpk->hpk_extent.length);
2871         __swab16s(&hpk->hpk_flags);
2872         __swab16s(&hpk->hpk_errval);
2873 }
2874
2875 void lustre_swab_hsm_request(struct hsm_request *hr)
2876 {
2877         __swab32s(&hr->hr_action);
2878         __swab32s(&hr->hr_archive_id);
2879         __swab64s(&hr->hr_flags);
2880         __swab32s(&hr->hr_itemcount);
2881         __swab32s(&hr->hr_data_len);
2882 }
2883
2884 void lustre_swab_object_update(struct object_update *ou)
2885 {
2886         struct object_update_param *param;
2887         size_t  i;
2888
2889         __swab16s(&ou->ou_type);
2890         __swab16s(&ou->ou_params_count);
2891         __swab32s(&ou->ou_result_size);
2892         __swab32s(&ou->ou_flags);
2893         __swab32s(&ou->ou_padding1);
2894         __swab64s(&ou->ou_batchid);
2895         lustre_swab_lu_fid(&ou->ou_fid);
2896         param = &ou->ou_params[0];
2897         for (i = 0; i < ou->ou_params_count; i++) {
2898                 __swab16s(&param->oup_len);
2899                 __swab16s(&param->oup_padding);
2900                 __swab32s(&param->oup_padding2);
2901                 param = (struct object_update_param *)((char *)param +
2902                          object_update_param_size(param));
2903         }
2904 }
2905
2906 int lustre_swab_object_update_request(struct object_update_request *our,
2907                                       __u32 len)
2908 {
2909         __u32 i, size = 0;
2910         struct object_update *ou;
2911
2912         __swab32s(&our->ourq_magic);
2913         __swab16s(&our->ourq_count);
2914         __swab16s(&our->ourq_padding);
2915
2916         /* Don't need to calculate request size if len is 0. */
2917         if (len > 0) {
2918                 size = sizeof(struct object_update_request);
2919                 for (i = 0; i < our->ourq_count; i++) {
2920                         ou = object_update_request_get(our, i, NULL);
2921                         if (ou == NULL)
2922                                 return -EPROTO;
2923                         size += sizeof(struct object_update) +
2924                                 ou->ou_params_count *
2925                                 sizeof(struct object_update_param);
2926                 }
2927                 if (unlikely(size > len))
2928                         return -EOVERFLOW;
2929         }
2930
2931         for (i = 0; i < our->ourq_count; i++) {
2932                 ou = object_update_request_get(our, i, NULL);
2933                 lustre_swab_object_update(ou);
2934         }
2935
2936         return size;
2937 }
2938
2939 void lustre_swab_object_update_result(struct object_update_result *our)
2940 {
2941         __swab32s(&our->our_rc);
2942         __swab16s(&our->our_datalen);
2943         __swab16s(&our->our_padding);
2944 }
2945
2946 int lustre_swab_object_update_reply(struct object_update_reply *our, __u32 len)
2947 {
2948         __u32 i, size;
2949
2950         __swab32s(&our->ourp_magic);
2951         __swab16s(&our->ourp_count);
2952         __swab16s(&our->ourp_padding);
2953
2954         size = sizeof(struct object_update_reply) + our->ourp_count *
2955                (sizeof(__u16) + sizeof(struct object_update_result));
2956         if (unlikely(size > len))
2957                 return -EOVERFLOW;
2958
2959         for (i = 0; i < our->ourp_count; i++) {
2960                 struct object_update_result *ourp;
2961
2962                 __swab16s(&our->ourp_lens[i]);
2963                 ourp = object_update_result_get(our, i, NULL);
2964                 if (ourp == NULL)
2965                         return -EPROTO;
2966                 lustre_swab_object_update_result(ourp);
2967         }
2968
2969         return size;
2970 }
2971
2972 void lustre_swab_out_update_header(struct out_update_header *ouh)
2973 {
2974         __swab32s(&ouh->ouh_magic);
2975         __swab32s(&ouh->ouh_count);
2976         __swab32s(&ouh->ouh_inline_length);
2977         __swab32s(&ouh->ouh_reply_size);
2978 }
2979 EXPORT_SYMBOL(lustre_swab_out_update_header);
2980
2981 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2982 {
2983         __swab32s(&oub->oub_size);
2984         __swab32s(&oub->oub_padding);
2985 }
2986 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2987
2988 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2989 {
2990         __swab64s(&msl->msl_flags);
2991 }
2992
2993 void lustre_swab_close_data(struct close_data *cd)
2994 {
2995         lustre_swab_lu_fid(&cd->cd_fid);
2996         __swab64s(&cd->cd_data_version);
2997 }
2998
2999 void lustre_swab_close_data_resync_done(struct close_data_resync_done *resync)
3000 {
3001         int i;
3002
3003         __swab32s(&resync->resync_count);
3004         /* after swab, resync_count must in CPU endian */
3005         if (resync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
3006                 for (i = 0; i < resync->resync_count; i++)
3007                         __swab32s(&resync->resync_ids_inline[i]);
3008         }
3009 }
3010 EXPORT_SYMBOL(lustre_swab_close_data_resync_done);
3011
3012 void lustre_swab_lfsck_request(struct lfsck_request *lr)
3013 {
3014         __swab32s(&lr->lr_event);
3015         __swab32s(&lr->lr_index);
3016         __swab32s(&lr->lr_flags);
3017         __swab32s(&lr->lr_valid);
3018         __swab32s(&lr->lr_speed);
3019         __swab16s(&lr->lr_version);
3020         __swab16s(&lr->lr_active);
3021         __swab16s(&lr->lr_param);
3022         __swab16s(&lr->lr_async_windows);
3023         __swab32s(&lr->lr_flags);
3024         lustre_swab_lu_fid(&lr->lr_fid);
3025         lustre_swab_lu_fid(&lr->lr_fid2);
3026         __swab32s(&lr->lr_comp_id);
3027         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_0) == 0);
3028         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_1) == 0);
3029         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_2) == 0);
3030         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_3) == 0);
3031 }
3032
3033 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
3034 {
3035         __swab32s(&lr->lr_status);
3036         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_1) == 0);
3037         __swab64s(&lr->lr_repaired);
3038 }
3039
3040 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
3041 {
3042         lustre_swab_lu_fid(&rec->lor_fid);
3043         __swab32s(&rec->lor_uid);
3044         __swab32s(&rec->lor_gid);
3045 }
3046
3047 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
3048 {
3049         lustre_swab_lu_fid(&ent->loe_key);
3050         lustre_swab_orphan_rec(&ent->loe_rec);
3051 }
3052 EXPORT_SYMBOL(lustre_swab_orphan_ent);
3053
3054 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
3055 {
3056         lustre_swab_lu_fid(&ent->loe_key);
3057         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
3058         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
3059         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding) == 0);
3060 }
3061 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
3062
3063 void lustre_swab_orphan_ent_v3(struct lu_orphan_ent_v3 *ent)
3064 {
3065         lustre_swab_lu_fid(&ent->loe_key);
3066         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
3067         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
3068         __swab32s(&ent->loe_rec.lor_layout_version);
3069         __swab32s(&ent->loe_rec.lor_range);
3070         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding_1) == 0);
3071         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding_2) == 0);
3072 }
3073 EXPORT_SYMBOL(lustre_swab_orphan_ent_v3);
3074
3075 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
3076 {
3077         __swab16s(&ladvise->lla_advice);
3078         __swab16s(&ladvise->lla_value1);
3079         __swab32s(&ladvise->lla_value2);
3080         __swab64s(&ladvise->lla_start);
3081         __swab64s(&ladvise->lla_end);
3082         __swab32s(&ladvise->lla_value3);
3083         __swab32s(&ladvise->lla_value4);
3084 }
3085 EXPORT_SYMBOL(lustre_swab_ladvise);
3086
3087 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
3088 {
3089         __swab32s(&ladvise_hdr->lah_magic);
3090         __swab32s(&ladvise_hdr->lah_count);
3091         __swab64s(&ladvise_hdr->lah_flags);
3092         __swab32s(&ladvise_hdr->lah_value1);
3093         __swab32s(&ladvise_hdr->lah_value2);
3094         __swab64s(&ladvise_hdr->lah_value3);
3095 }
3096 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);