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 /* This returns the size of the buffer that is required to hold a lustre_msg
 142  * with the given sub-buffer lengths.
 143  * NOTE: this should only be used for NEW requests, and should always be
 144  *       in the form of a v2 request.  If this is a connection to a v1
 145  *       target then the first buffer will be stripped because the ptlrpc
 146  *       data is part of the lustre_msg_v1 header. b=14043 */
 147 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 148 {
 149         __u32 size[] = { sizeof(struct ptlrpc_body) };
 150
 151         if (!lens) {
 152                 LASSERT(count == 1);
 153                 lens = size;
 154         }
 155
 156         LASSERT(count > 0);
 157         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 158
 159         switch (magic) {
 160         case LUSTRE_MSG_MAGIC_V2:
 161                 return lustre_msg_size_v2(count, lens);
 162         default:
 163                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 164                 return 0;
 165         }
 166 }
 167
 168 /* This is used to determine the size of a buffer that was already packed
 169  * and will correctly handle the different message formats. */
 170 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 171 {
 172         switch (msg->lm_magic) {
 173         case LUSTRE_MSG_MAGIC_V2:
 174                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 175         default:
 176                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 177                 return 0;
 178         }
 179 }
 180 EXPORT_SYMBOL(lustre_packed_msg_size);
 181
 182 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 183                         char **bufs)
 184 {
 185         char *ptr;
 186         int i;
 187
 188         LASSERT(count > 0);
 189
 190         msg->lm_bufcount = count;
 191         /* XXX: lm_secflvr uninitialized here */
 192         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 193
 194         for (i = 0; i < count; i++)
 195                 msg->lm_buflens[i] = lens[i];
 196
 197         if (bufs == NULL)
 198                 return;
 199
 200         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 201         for (i = 0; i < count; i++) {
 202                 char *tmp = bufs[i];
 203
 204                 if (tmp)
 205                         memcpy(ptr, tmp, lens[i]);
 206                 ptr += cfs_size_round(lens[i]);
 207         }
 208 }
 209 EXPORT_SYMBOL(lustre_init_msg_v2);
 210
 211 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 212                                   int count, __u32 *lens, char **bufs)
 213 {
 214         int reqlen, rc;
 215
 216         reqlen = lustre_msg_size_v2(count, lens);
 217
 218         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 219         if (rc)
 220                 return rc;
 221
 222         req->rq_reqlen = reqlen;
 223
 224         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 225         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 226         return 0;
 227 }
 228
 229 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 230                         __u32 *lens, char **bufs)
 231 {
 232         __u32 size[] = { sizeof(struct ptlrpc_body) };
 233
 234         if (!lens) {
 235                 LASSERT(count == 1);
 236                 lens = size;
 237         }
 238
 239         LASSERT(count > 0);
 240         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 241
 242         /* only use new format, we don't need to be compatible with 1.4 */
 243         magic = LUSTRE_MSG_MAGIC_V2;
 244
 245         switch (magic) {
 246         case LUSTRE_MSG_MAGIC_V2:
 247                 return lustre_pack_request_v2(req, count, lens, bufs);
 248         default:
 249                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 250                 return -EINVAL;
 251         }
 252 }
 253
 254 #if RS_DEBUG
 255 struct list_head ptlrpc_rs_debug_lru =
 256         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 257 spinlock_t ptlrpc_rs_debug_lock;
 258
 259 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 260 do {                                                                    \
 261         spin_lock(&ptlrpc_rs_debug_lock);                               \
 262         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 263         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 264 } while (0)
 265
 266 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 267 do {                                                                    \
 268         spin_lock(&ptlrpc_rs_debug_lock);                               \
 269         list_del(&(rs)->rs_debug_list);                         \
 270         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 271 } while (0)
 272 #else
 273 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 274 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 275 #endif
 276
 277 struct ptlrpc_reply_state *
 278 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 279 {
 280         struct ptlrpc_reply_state *rs = NULL;
 281
 282         spin_lock(&svcpt->scp_rep_lock);
 283
 284         /* See if we have anything in a pool, and wait if nothing */
 285         while (list_empty(&svcpt->scp_rep_idle)) {
 286                 struct l_wait_info      lwi;
 287                 int                     rc;
 288
 289                 spin_unlock(&svcpt->scp_rep_lock);
 290                 /* If we cannot get anything for some long time, we better
 291                  * bail out instead of waiting infinitely */
 292                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 293                 rc = l_wait_event(svcpt->scp_rep_waitq,
 294                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 295                 if (rc != 0)
 296                         goto out;
 297                 spin_lock(&svcpt->scp_rep_lock);
 298         }
 299
 300         rs = list_entry(svcpt->scp_rep_idle.next,
 301                             struct ptlrpc_reply_state, rs_list);
 302         list_del(&rs->rs_list);
 303
 304         spin_unlock(&svcpt->scp_rep_lock);
 305
 306         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 307         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 308         rs->rs_svcpt = svcpt;
 309         rs->rs_prealloc = 1;
 310 out:
 311         return rs;
 312 }
 313
 314 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 315 {
 316         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 317
 318         spin_lock(&svcpt->scp_rep_lock);
 319         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 320         spin_unlock(&svcpt->scp_rep_lock);
 321         wake_up(&svcpt->scp_rep_waitq);
 322 }
 323
 324 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 325                          __u32 *lens, char **bufs, int flags)
 326 {
 327         struct ptlrpc_reply_state *rs;
 328         int                        msg_len, rc;
 329         ENTRY;
 330
 331         LASSERT(req->rq_reply_state == NULL);
 332         LASSERT(count > 0);
 333
 334         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 335                 spin_lock(&req->rq_lock);
 336                 req->rq_packed_final = 1;
 337                 spin_unlock(&req->rq_lock);
 338         }
 339
 340         msg_len = lustre_msg_size_v2(count, lens);
 341         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 342         if (rc)
 343                 RETURN(rc);
 344
 345         rs = req->rq_reply_state;
 346         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 347         rs->rs_cb_id.cbid_fn = reply_out_callback;
 348         rs->rs_cb_id.cbid_arg = rs;
 349         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 350         INIT_LIST_HEAD(&rs->rs_exp_list);
 351         INIT_LIST_HEAD(&rs->rs_obd_list);
 352         INIT_LIST_HEAD(&rs->rs_list);
 353         spin_lock_init(&rs->rs_lock);
 354
 355         req->rq_replen = msg_len;
 356         req->rq_reply_state = rs;
 357         req->rq_repmsg = rs->rs_msg;
 358
 359         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 360         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 361
 362         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 363
 364         RETURN(0);
 365 }
 366 EXPORT_SYMBOL(lustre_pack_reply_v2);
 367
 368 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 369                             char **bufs, int flags)
 370 {
 371         int rc = 0;
 372         __u32 size[] = { sizeof(struct ptlrpc_body) };
 373
 374         if (!lens) {
 375                 LASSERT(count == 1);
 376                 lens = size;
 377         }
 378
 379         LASSERT(count > 0);
 380         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 381
 382         switch (req->rq_reqmsg->lm_magic) {
 383         case LUSTRE_MSG_MAGIC_V2:
 384                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 385                 break;
 386         default:
 387                 LASSERTF(0, "incorrect message magic: %08x\n",
 388                          req->rq_reqmsg->lm_magic);
 389                 rc = -EINVAL;
 390         }
 391         if (rc != 0)
 392                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 393                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 394         return rc;
 395 }
 396
 397 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 398                       char **bufs)
 399 {
 400         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 401 }
 402 EXPORT_SYMBOL(lustre_pack_reply);
 403
 404 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
 405 {
 406         __u32 i, offset, buflen, bufcount;
 407
 408         LASSERT(m != NULL);
 409         LASSERT(m->lm_bufcount > 0);
 410
 411         bufcount = m->lm_bufcount;
 412         if (unlikely(n >= bufcount)) {
 413                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 414                        m, n, bufcount);
 415                 return NULL;
 416         }
 417
 418         buflen = m->lm_buflens[n];
 419         if (unlikely(buflen < min_size)) {
 420                 CERROR("msg %p buffer[%d] size %d too small "
 421                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 422                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 423                 return NULL;
 424         }
 425
 426         offset = lustre_msg_hdr_size_v2(bufcount);
 427         for (i = 0; i < n; i++)
 428                 offset += cfs_size_round(m->lm_buflens[i]);
 429
 430         return (char *)m + offset;
 431 }
 432
 433 void *lustre_msg_buf(struct lustre_msg *m, __u32 n, __u32 min_size)
 434 {
 435         switch (m->lm_magic) {
 436         case LUSTRE_MSG_MAGIC_V2:
 437                 return lustre_msg_buf_v2(m, n, min_size);
 438         default:
 439                 LASSERTF(0, "incorrect message magic: %08x (msg:%p)\n",
 440                          m->lm_magic, m);
 441                 return NULL;
 442         }
 443 }
 444 EXPORT_SYMBOL(lustre_msg_buf);
 445
 446 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 447                                 unsigned int newlen, int move_data)
 448 {
 449         char   *tail = NULL, *newpos;
 450         int     tail_len = 0, n;
 451
 452         LASSERT(msg);
 453         LASSERT(msg->lm_bufcount > segment);
 454         LASSERT(msg->lm_buflens[segment] >= newlen);
 455
 456         if (msg->lm_buflens[segment] == newlen)
 457                 goto out;
 458
 459         if (move_data && msg->lm_bufcount > segment + 1) {
 460                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 461                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 462                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 463         }
 464
 465         msg->lm_buflens[segment] = newlen;
 466
 467         if (tail && tail_len) {
 468                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 469                 LASSERT(newpos <= tail);
 470                 if (newpos != tail)
 471                         memmove(newpos, tail, tail_len);
 472         }
 473 out:
 474         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 475 }
 476
 477 /*
 478  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 479  * we also move data forward from @segment + 1.
 480  *
 481  * if @newlen == 0, we remove the segment completely, but we still keep the
 482  * totally bufcount the same to save possible data moving. this will leave a
 483  * unused segment with size 0 at the tail, but that's ok.
 484  *
 485  * return new msg size after shrinking.
 486  *
 487  * CAUTION:
 488  * + if any buffers higher than @segment has been filled in, must call shrink
 489  *   with non-zero @move_data.
 490  * + caller should NOT keep pointers to msg buffers which higher than @segment
 491  *   after call shrink.
 492  */
 493 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 494                       unsigned int newlen, int move_data)
 495 {
 496         switch (msg->lm_magic) {
 497         case LUSTRE_MSG_MAGIC_V2:
 498                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 499         default:
 500                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 501         }
 502 }
 503 EXPORT_SYMBOL(lustre_shrink_msg);
 504
 505 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 506 {
 507         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 508
 509         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 510         LASSERT(!rs->rs_difficult || rs->rs_handled);
 511         LASSERT(!rs->rs_on_net);
 512         LASSERT(!rs->rs_scheduled);
 513         LASSERT(rs->rs_export == NULL);
 514         LASSERT(rs->rs_nlocks == 0);
 515         LASSERT(list_empty(&rs->rs_exp_list));
 516         LASSERT(list_empty(&rs->rs_obd_list));
 517
 518         sptlrpc_svc_free_rs(rs);
 519 }
 520
 521 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 522 {
 523         int swabbed, required_len, i, buflen;
 524
 525         /* Now we know the sender speaks my language. */
 526         required_len = lustre_msg_hdr_size_v2(0);
 527         if (len < required_len) {
 528                 /* can't even look inside the message */
 529                 CERROR("message length %d too small for lustre_msg\n", len);
 530                 return -EINVAL;
 531         }
 532
 533         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 534
 535         if (swabbed) {
 536                 __swab32s(&m->lm_magic);
 537                 __swab32s(&m->lm_bufcount);
 538                 __swab32s(&m->lm_secflvr);
 539                 __swab32s(&m->lm_repsize);
 540                 __swab32s(&m->lm_cksum);
 541                 __swab32s(&m->lm_flags);
 542                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 543                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 544         }
 545
 546         if (m->lm_bufcount == 0 || m->lm_bufcount > PTLRPC_MAX_BUFCOUNT) {
 547                 CERROR("message bufcount %d is not valid\n", m->lm_bufcount);
 548                 return -EINVAL;
 549         }
 550         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 551         if (len < required_len) {
 552                 /* didn't receive all the buffer lengths */
 553                 CERROR("message length %d too small for %d buflens\n",
 554                        len, m->lm_bufcount);
 555                 return -EINVAL;
 556         }
 557
 558         for (i = 0; i < m->lm_bufcount; i++) {
 559                 if (swabbed)
 560                         __swab32s(&m->lm_buflens[i]);
 561                 buflen = cfs_size_round(m->lm_buflens[i]);
 562                 if (buflen < 0 || buflen > PTLRPC_MAX_BUFLEN) {
 563                         CERROR("buffer %d length %d is not valid\n", i, buflen);
 564                         return -EINVAL;
 565                 }
 566                 required_len += buflen;
 567         }
 568         if (len < required_len || required_len > PTLRPC_MAX_BUFLEN) {
 569                 CERROR("len: %d, required_len %d, bufcount: %d\n",
 570                        len, required_len, m->lm_bufcount);
 571                 for (i = 0; i < m->lm_bufcount; i++)
 572                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 573                 return -EINVAL;
 574         }
 575
 576         return swabbed;
 577 }
 578
 579 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 580 {
 581         int required_len, rc;
 582         ENTRY;
 583
 584         /* We can provide a slightly better error log, if we check the
 585          * message magic and version first.  In the future, struct
 586          * lustre_msg may grow, and we'd like to log a version mismatch,
 587          * rather than a short message.
 588          *
 589          */
 590         required_len = offsetof(struct lustre_msg, lm_magic) +
 591                        sizeof(m->lm_magic);
 592         if (len < required_len) {
 593                 /* can't even look inside the message */
 594                 CERROR("message length %d too small for magic/version check\n",
 595                        len);
 596                 RETURN(-EINVAL);
 597         }
 598
 599         rc = lustre_unpack_msg_v2(m, len);
 600
 601         RETURN(rc);
 602 }
 603 EXPORT_SYMBOL(__lustre_unpack_msg);
 604
 605 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 606 {
 607         int rc;
 608         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 609         if (rc == 1) {
 610                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 611                 rc = 0;
 612         }
 613         return rc;
 614 }
 615
 616 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 617 {
 618         int rc;
 619         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 620         if (rc == 1) {
 621                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 622                 rc = 0;
 623         }
 624         return rc;
 625 }
 626
 627 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 628                                                const int inout, int offset)
 629 {
 630         struct ptlrpc_body *pb;
 631         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 632
 633         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 634         if (!pb) {
 635                 CERROR("error unpacking ptlrpc body\n");
 636                 return -EFAULT;
 637         }
 638         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 639                 lustre_swab_ptlrpc_body(pb);
 640                 ptlrpc_buf_set_swabbed(req, inout, offset);
 641         }
 642
 643         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 644                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 645                  return -EINVAL;
 646         }
 647
 648         if (!inout)
 649                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 650
 651         return 0;
 652 }
 653
 654 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 655 {
 656         switch (req->rq_reqmsg->lm_magic) {
 657         case LUSTRE_MSG_MAGIC_V2:
 658                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 659         default:
 660                 CERROR("bad lustre msg magic: %08x\n",
 661                        req->rq_reqmsg->lm_magic);
 662                 return -EINVAL;
 663         }
 664 }
 665
 666 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 667 {
 668         switch (req->rq_repmsg->lm_magic) {
 669         case LUSTRE_MSG_MAGIC_V2:
 670                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 671         default:
 672                 CERROR("bad lustre msg magic: %08x\n",
 673                        req->rq_repmsg->lm_magic);
 674                 return -EINVAL;
 675         }
 676 }
 677
 678 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 679 {
 680         if (n >= m->lm_bufcount)
 681                 return 0;
 682
 683         return m->lm_buflens[n];
 684 }
 685
 686 /**
 687  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 688  * \param m lustre_msg (request or reply) to look at
 689  * \param n message index (base 0)
 690  *
 691  * returns zero for non-existent message indices
 692  */
 693 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 694 {
 695         switch (m->lm_magic) {
 696         case LUSTRE_MSG_MAGIC_V2:
 697                 return lustre_msg_buflen_v2(m, n);
 698         default:
 699                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 700                 return 0;
 701         }
 702 }
 703 EXPORT_SYMBOL(lustre_msg_buflen);
 704
 705 static inline void
 706 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 707 {
 708         if (n >= m->lm_bufcount)
 709                 LBUG();
 710
 711         m->lm_buflens[n] = len;
 712 }
 713
 714 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 715 {
 716         switch (m->lm_magic) {
 717         case LUSTRE_MSG_MAGIC_V2:
 718                 lustre_msg_set_buflen_v2(m, n, len);
 719                 return;
 720         default:
 721                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 722         }
 723 }
 724
 725 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 726  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 727 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 728 {
 729         switch (m->lm_magic) {
 730         case LUSTRE_MSG_MAGIC_V2:
 731                 return m->lm_bufcount;
 732         default:
 733                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 734                 return 0;
 735         }
 736 }
 737
 738 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 739 {
 740         /* max_len == 0 means the string should fill the buffer */
 741         char *str;
 742         __u32 slen, blen;
 743
 744         switch (m->lm_magic) {
 745         case LUSTRE_MSG_MAGIC_V2:
 746                 str = lustre_msg_buf_v2(m, index, 0);
 747                 blen = lustre_msg_buflen_v2(m, index);
 748                 break;
 749         default:
 750                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 751         }
 752
 753         if (str == NULL) {
 754                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 755                 return NULL;
 756         }
 757
 758         slen = strnlen(str, blen);
 759
 760         if (slen == blen) {                     /* not NULL terminated */
 761                 CERROR("can't unpack non-NULL terminated string in "
 762                         "msg %p buffer[%d] len %d\n", m, index, blen);
 763                 return NULL;
 764         }
 765         if (blen > PTLRPC_MAX_BUFLEN) {
 766                 CERROR("buffer length of msg %p buffer[%d] is invalid(%d)\n",
 767                        m, index, blen);
 768                 return NULL;
 769         }
 770
 771         if (max_len == 0) {
 772                 if (slen != blen - 1) {
 773                         CERROR("can't unpack short string in msg %p "
 774                                "buffer[%d] len %d: strlen %d\n",
 775                                m, index, blen, slen);
 776                         return NULL;
 777                 }
 778         } else if (slen > max_len) {
 779                 CERROR("can't unpack oversized string in msg %p "
 780                        "buffer[%d] len %d strlen %d: max %d expected\n",
 781                        m, index, blen, slen, max_len);
 782                 return NULL;
 783         }
 784
 785         return str;
 786 }
 787
 788 /* Wrap up the normal fixed length cases */
 789 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 790                                       __u32 min_size, void *swabber)
 791 {
 792         void *ptr = NULL;
 793
 794         LASSERT(msg != NULL);
 795         switch (msg->lm_magic) {
 796         case LUSTRE_MSG_MAGIC_V2:
 797                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 798                 break;
 799         default:
 800                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 801         }
 802
 803         if (ptr != NULL && swabber != NULL)
 804                 ((void (*)(void *))swabber)(ptr);
 805
 806         return ptr;
 807 }
 808
 809 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 810 {
 811         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 812                                  sizeof(struct ptlrpc_body_v2));
 813 }
 814
 815 enum lustre_msghdr lustre_msghdr_get_flags(struct lustre_msg *msg)
 816 {
 817         switch (msg->lm_magic) {
 818         case LUSTRE_MSG_MAGIC_V2:
 819                 /* already in host endian */
 820                 return msg->lm_flags;
 821         default:
 822                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 823                 return 0;
 824         }
 825 }
 826 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 827
 828 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 829 {
 830         switch (msg->lm_magic) {
 831         case LUSTRE_MSG_MAGIC_V2:
 832                 msg->lm_flags = flags;
 833                 return;
 834         default:
 835                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 836         }
 837 }
 838
 839 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 840 {
 841         switch (msg->lm_magic) {
 842         case LUSTRE_MSG_MAGIC_V2: {
 843                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 844                 if (pb != NULL)
 845                         return pb->pb_flags;
 846
 847                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 848         }
 849         /* fallthrough */
 850         default:
 851                 /* flags might be printed in debug code while message
 852                  * uninitialized */
 853                 return 0;
 854         }
 855 }
 856 EXPORT_SYMBOL(lustre_msg_get_flags);
 857
 858 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 859 {
 860         switch (msg->lm_magic) {
 861         case LUSTRE_MSG_MAGIC_V2: {
 862                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 863                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 864                 pb->pb_flags |= flags;
 865                 return;
 866         }
 867         default:
 868                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 869         }
 870 }
 871 EXPORT_SYMBOL(lustre_msg_add_flags);
 872
 873 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
 874 {
 875         switch (msg->lm_magic) {
 876         case LUSTRE_MSG_MAGIC_V2: {
 877                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 878                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 879                 pb->pb_flags = flags;
 880                 return;
 881         }
 882         default:
 883                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 884         }
 885 }
 886
 887 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 888 {
 889         switch (msg->lm_magic) {
 890         case LUSTRE_MSG_MAGIC_V2: {
 891                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 892                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 893                 pb->pb_flags &= ~flags;
 894
 895                 return;
 896         }
 897         default:
 898                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 899         }
 900 }
 901 EXPORT_SYMBOL(lustre_msg_clear_flags);
 902
 903 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 904 {
 905         switch (msg->lm_magic) {
 906         case LUSTRE_MSG_MAGIC_V2: {
 907                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 908                 if (pb != NULL)
 909                         return pb->pb_op_flags;
 910
 911                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 912         }
 913         /* fallthrough */
 914         default:
 915                 return 0;
 916         }
 917 }
 918
 919 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 920 {
 921         switch (msg->lm_magic) {
 922         case LUSTRE_MSG_MAGIC_V2: {
 923                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 924                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 925                 pb->pb_op_flags |= flags;
 926                 return;
 927         }
 928         default:
 929                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 930         }
 931 }
 932 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 933
 934 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 935 {
 936         switch (msg->lm_magic) {
 937         case LUSTRE_MSG_MAGIC_V2: {
 938                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 939                 if (pb == NULL) {
 940                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 941                         return NULL;
 942                 }
 943                 return &pb->pb_handle;
 944         }
 945         default:
 946                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 947                 return NULL;
 948         }
 949 }
 950
 951 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 952 {
 953         switch (msg->lm_magic) {
 954         case LUSTRE_MSG_MAGIC_V2: {
 955                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 956                 if (pb == NULL) {
 957                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 958                         return PTL_RPC_MSG_ERR;
 959                 }
 960                 return pb->pb_type;
 961         }
 962         default:
 963                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 964                 return PTL_RPC_MSG_ERR;
 965         }
 966 }
 967 EXPORT_SYMBOL(lustre_msg_get_type);
 968
 969 enum lustre_msg_version lustre_msg_get_version(struct lustre_msg *msg)
 970 {
 971         switch (msg->lm_magic) {
 972         case LUSTRE_MSG_MAGIC_V2: {
 973                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 974                 if (pb == NULL) {
 975                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 976                         return 0;
 977                 }
 978                 return pb->pb_version;
 979         }
 980         default:
 981                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 982                 return 0;
 983         }
 984 }
 985
 986 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
 987 {
 988         switch (msg->lm_magic) {
 989         case LUSTRE_MSG_MAGIC_V2: {
 990                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 991                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 992                 pb->pb_version |= version;
 993                 return;
 994         }
 995         default:
 996                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 997         }
 998 }
 999
1000 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1001 {
1002         switch (msg->lm_magic) {
1003         case LUSTRE_MSG_MAGIC_V2: {
1004                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1005                 if (pb == NULL) {
1006                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1007                         return 0;
1008                 }
1009                 return pb->pb_opc;
1010         }
1011         default:
1012                 CERROR("incorrect message magic: %08x (msg:%p)\n",
1013                        msg->lm_magic, msg);
1014                 return 0;
1015         }
1016 }
1017 EXPORT_SYMBOL(lustre_msg_get_opc);
1018
1019 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1020 {
1021         switch (msg->lm_magic) {
1022         case LUSTRE_MSG_MAGIC_V2: {
1023                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1024                 if (pb == NULL) {
1025                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1026                         return 0;
1027                 }
1028                 return pb->pb_last_xid;
1029         }
1030         default:
1031                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1032                 return 0;
1033         }
1034 }
1035 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1036
1037 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1038 {
1039         switch (msg->lm_magic) {
1040         case LUSTRE_MSG_MAGIC_V2: {
1041                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1042                 if (!pb) {
1043                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1044                         return 0;
1045                 }
1046                 return pb->pb_tag;
1047         }
1048         default:
1049                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1050                 return 0;
1051         }
1052 }
1053 EXPORT_SYMBOL(lustre_msg_get_tag);
1054
1055 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1056 {
1057         switch (msg->lm_magic) {
1058         case LUSTRE_MSG_MAGIC_V2: {
1059                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1060                 if (pb == NULL) {
1061                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1062                         return 0;
1063                 }
1064                 return pb->pb_last_committed;
1065         }
1066         default:
1067                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1068                 return 0;
1069         }
1070 }
1071 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1072
1073 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1074 {
1075         switch (msg->lm_magic) {
1076         case LUSTRE_MSG_MAGIC_V2: {
1077                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1078                 if (pb == NULL) {
1079                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1080                         return NULL;
1081                 }
1082                 return pb->pb_pre_versions;
1083         }
1084         default:
1085                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1086                 return NULL;
1087         }
1088 }
1089 EXPORT_SYMBOL(lustre_msg_get_versions);
1090
1091 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1092 {
1093         switch (msg->lm_magic) {
1094         case LUSTRE_MSG_MAGIC_V2: {
1095                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1096                 if (pb == NULL) {
1097                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1098                         return 0;
1099                 }
1100                 return pb->pb_transno;
1101         }
1102         default:
1103                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1104                 return 0;
1105         }
1106 }
1107 EXPORT_SYMBOL(lustre_msg_get_transno);
1108
1109 int lustre_msg_get_status(struct lustre_msg *msg)
1110 {
1111         switch (msg->lm_magic) {
1112         case LUSTRE_MSG_MAGIC_V2: {
1113                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1114                 if (pb != NULL)
1115                         return pb->pb_status;
1116                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1117         }
1118         /* fallthrough */
1119         default:
1120                 /* status might be printed in debug code while message
1121                 * uninitialized */
1122                 return -EINVAL;
1123         }
1124 }
1125 EXPORT_SYMBOL(lustre_msg_get_status);
1126
1127 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1128 {
1129         switch (msg->lm_magic) {
1130         case LUSTRE_MSG_MAGIC_V2: {
1131                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1132                 if (pb == NULL) {
1133                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1134                         return -EINVAL;
1135                 }
1136                 return pb->pb_slv;
1137         }
1138         default:
1139                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1140                 return -EINVAL;
1141         }
1142 }
1143
1144
1145 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1146 {
1147         switch (msg->lm_magic) {
1148         case LUSTRE_MSG_MAGIC_V2: {
1149                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1150                 if (pb == NULL) {
1151                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1152                         return;
1153                 }
1154                 pb->pb_slv = slv;
1155                 return;
1156         }
1157         default:
1158                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1159                 return;
1160         }
1161 }
1162
1163 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1164 {
1165         switch (msg->lm_magic) {
1166         case LUSTRE_MSG_MAGIC_V2: {
1167                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1168                 if (pb == NULL) {
1169                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1170                         return -EINVAL;
1171                 }
1172                 return pb->pb_limit;
1173         }
1174         default:
1175                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1176                 return -EINVAL;
1177         }
1178 }
1179
1180
1181 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1182 {
1183         switch (msg->lm_magic) {
1184         case LUSTRE_MSG_MAGIC_V2: {
1185                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1186                 if (pb == NULL) {
1187                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1188                         return;
1189                 }
1190                 pb->pb_limit = limit;
1191                 return;
1192         }
1193         default:
1194                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1195                 return;
1196         }
1197 }
1198
1199 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1200 {
1201         switch (msg->lm_magic) {
1202         case LUSTRE_MSG_MAGIC_V2: {
1203                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1204                 if (pb == NULL) {
1205                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1206                         return 0;
1207                 }
1208                 return pb->pb_conn_cnt;
1209         }
1210         default:
1211                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1212                 return 0;
1213         }
1214 }
1215 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1216
1217 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1218 {
1219         switch (msg->lm_magic) {
1220         case LUSTRE_MSG_MAGIC_V2:
1221                 return msg->lm_magic;
1222         default:
1223                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1224                 return 0;
1225         }
1226 }
1227
1228 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1229 {
1230         switch (msg->lm_magic) {
1231         case LUSTRE_MSG_MAGIC_V2: {
1232                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1233                 if (pb == NULL) {
1234                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1235                         return 0;
1236                 }
1237                 return pb->pb_timeout;
1238         }
1239         default:
1240                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1241                 return 0;
1242         }
1243 }
1244
1245 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1246 {
1247         switch (msg->lm_magic) {
1248         case LUSTRE_MSG_MAGIC_V2: {
1249                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1250                 if (pb == NULL) {
1251                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1252                         return 0;
1253                 }
1254                 return pb->pb_service_time;
1255         }
1256         default:
1257                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1258                 return 0;
1259         }
1260 }
1261
1262 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1263 {
1264         switch (msg->lm_magic) {
1265         case LUSTRE_MSG_MAGIC_V2: {
1266                 struct ptlrpc_body *pb;
1267
1268                 /* the old pltrpc_body_v2 is smaller; doesn't include jobid */
1269                 if (msg->lm_buflens[MSG_PTLRPC_BODY_OFF] <
1270                     sizeof(struct ptlrpc_body))
1271                         return NULL;
1272
1273                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1274                                           sizeof(struct ptlrpc_body));
1275                 if (!pb)
1276                         return NULL;
1277
1278                 return pb->pb_jobid;
1279         }
1280         default:
1281                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1282                 return NULL;
1283         }
1284 }
1285 EXPORT_SYMBOL(lustre_msg_get_jobid);
1286
1287 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1288 {
1289         switch (msg->lm_magic) {
1290         case LUSTRE_MSG_MAGIC_V2:
1291                 return msg->lm_cksum;
1292         default:
1293                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1294                 return 0;
1295         }
1296 }
1297
1298 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1299 {
1300         switch (msg->lm_magic) {
1301         case LUSTRE_MSG_MAGIC_V2: {
1302                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1303                 if (pb == NULL) {
1304                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1305                         return 0;
1306                 }
1307                 return pb->pb_mbits;
1308         }
1309         default:
1310                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1311                 return 0;
1312         }
1313 }
1314
1315 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1316 {
1317         switch (msg->lm_magic) {
1318         case LUSTRE_MSG_MAGIC_V2: {
1319                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1320                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1321
1322                 unsigned int hsize = 4;
1323                 __u32 crc;
1324
1325                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1326                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1327                                        len, NULL, 0, (unsigned char *)&crc,
1328                                        &hsize);
1329                 return crc;
1330         }
1331         default:
1332                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1333                 return 0;
1334         }
1335 }
1336
1337 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1338 {
1339         switch (msg->lm_magic) {
1340         case LUSTRE_MSG_MAGIC_V2: {
1341                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1342                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1343                 pb->pb_handle = *handle;
1344                 return;
1345         }
1346         default:
1347                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1348         }
1349 }
1350
1351 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1352 {
1353         switch (msg->lm_magic) {
1354         case LUSTRE_MSG_MAGIC_V2: {
1355                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1356                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1357                 pb->pb_type = type;
1358                 return;
1359                 }
1360         default:
1361                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1362         }
1363 }
1364
1365 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1366 {
1367         switch (msg->lm_magic) {
1368         case LUSTRE_MSG_MAGIC_V2: {
1369                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1370                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1371                 pb->pb_opc = opc;
1372                 return;
1373         }
1374         default:
1375                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1376         }
1377 }
1378
1379 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1380 {
1381         switch (msg->lm_magic) {
1382         case LUSTRE_MSG_MAGIC_V2: {
1383                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1384                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1385                 pb->pb_last_xid = last_xid;
1386                 return;
1387         }
1388         default:
1389                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1390         }
1391 }
1392 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1393
1394 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1395 {
1396         switch (msg->lm_magic) {
1397         case LUSTRE_MSG_MAGIC_V2: {
1398                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1399                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1400                 pb->pb_tag = tag;
1401                 return;
1402         }
1403         default:
1404                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1405         }
1406 }
1407 EXPORT_SYMBOL(lustre_msg_set_tag);
1408
1409 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1410 {
1411         switch (msg->lm_magic) {
1412         case LUSTRE_MSG_MAGIC_V2: {
1413                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1414                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1415                 pb->pb_last_committed = last_committed;
1416                 return;
1417         }
1418         default:
1419                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1420         }
1421 }
1422
1423 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1424 {
1425         switch (msg->lm_magic) {
1426         case LUSTRE_MSG_MAGIC_V2: {
1427                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1428                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1429                 pb->pb_pre_versions[0] = versions[0];
1430                 pb->pb_pre_versions[1] = versions[1];
1431                 pb->pb_pre_versions[2] = versions[2];
1432                 pb->pb_pre_versions[3] = versions[3];
1433                 return;
1434         }
1435         default:
1436                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1437         }
1438 }
1439 EXPORT_SYMBOL(lustre_msg_set_versions);
1440
1441 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
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_transno = transno;
1448                 return;
1449         }
1450         default:
1451                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1452         }
1453 }
1454 EXPORT_SYMBOL(lustre_msg_set_transno);
1455
1456 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1457 {
1458         switch (msg->lm_magic) {
1459         case LUSTRE_MSG_MAGIC_V2: {
1460                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1461                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1462                 pb->pb_status = status;
1463                 return;
1464         }
1465         default:
1466                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1467         }
1468 }
1469 EXPORT_SYMBOL(lustre_msg_set_status);
1470
1471 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
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_conn_cnt = conn_cnt;
1478                 return;
1479         }
1480         default:
1481                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1482         }
1483 }
1484
1485 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
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_timeout = timeout;
1492                 return;
1493         }
1494         default:
1495                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1496         }
1497 }
1498
1499 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1500 {
1501         switch (msg->lm_magic) {
1502         case LUSTRE_MSG_MAGIC_V2: {
1503                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1504                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1505                 pb->pb_service_time = service_time;
1506                 return;
1507         }
1508         default:
1509                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1510         }
1511 }
1512
1513 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1514 {
1515         switch (msg->lm_magic) {
1516         case LUSTRE_MSG_MAGIC_V2: {
1517                 __u32 opc = lustre_msg_get_opc(msg);
1518                 struct ptlrpc_body *pb;
1519
1520                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1521                  * See the comment in ptlrpc_request_pack(). */
1522                 if (!opc || opc == LDLM_BL_CALLBACK ||
1523                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1524                         return;
1525
1526                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1527                                        sizeof(struct ptlrpc_body));
1528                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1529
1530                 if (jobid != NULL)
1531                         memcpy(pb->pb_jobid, jobid, sizeof(pb->pb_jobid));
1532                 else if (pb->pb_jobid[0] == '\0')
1533                         lustre_get_jobid(pb->pb_jobid, sizeof(pb->pb_jobid));
1534                 return;
1535         }
1536         default:
1537                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1538         }
1539 }
1540 EXPORT_SYMBOL(lustre_msg_set_jobid);
1541
1542 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1543 {
1544         switch (msg->lm_magic) {
1545         case LUSTRE_MSG_MAGIC_V2:
1546                 msg->lm_cksum = cksum;
1547                 return;
1548         default:
1549                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1550         }
1551 }
1552
1553 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1554 {
1555         switch (msg->lm_magic) {
1556         case LUSTRE_MSG_MAGIC_V2: {
1557                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1558
1559                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1560                 pb->pb_mbits = mbits;
1561                 return;
1562         }
1563         default:
1564                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1565         }
1566 }
1567
1568 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1569 {
1570         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1571
1572         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1573                                          req->rq_pill.rc_area[RCL_SERVER]);
1574         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1575                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1576 }
1577 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1578
1579 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1580 {
1581         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1582         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1583                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1584 }
1585
1586 /**
1587  * Send a remote set_info_async.
1588  *
1589  * This may go from client to server or server to client.
1590  */
1591 int do_set_info_async(struct obd_import *imp,
1592                       int opcode, int version,
1593                       size_t keylen, void *key,
1594                       size_t vallen, void *val,
1595                       struct ptlrpc_request_set *set)
1596 {
1597         struct ptlrpc_request *req;
1598         char                  *tmp;
1599         int                    rc;
1600         ENTRY;
1601
1602         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1603         if (req == NULL)
1604                 RETURN(-ENOMEM);
1605
1606         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1607                              RCL_CLIENT, keylen);
1608         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1609                              RCL_CLIENT, vallen);
1610         rc = ptlrpc_request_pack(req, version, opcode);
1611         if (rc) {
1612                 ptlrpc_request_free(req);
1613                 RETURN(rc);
1614         }
1615
1616         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1617         memcpy(tmp, key, keylen);
1618         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1619         memcpy(tmp, val, vallen);
1620
1621         ptlrpc_request_set_replen(req);
1622
1623         if (set) {
1624                 ptlrpc_set_add_req(set, req);
1625                 ptlrpc_check_set(NULL, set);
1626         } else {
1627                 rc = ptlrpc_queue_wait(req);
1628                 ptlrpc_req_finished(req);
1629         }
1630
1631         RETURN(rc);
1632 }
1633 EXPORT_SYMBOL(do_set_info_async);
1634
1635 /* byte flipping routines for all wire types declared in
1636  * lustre_idl.h implemented here.
1637  */
1638 void lustre_swab_ptlrpc_body(struct ptlrpc_body *body)
1639 {
1640         __swab32s(&body->pb_type);
1641         __swab32s(&body->pb_version);
1642         __swab32s(&body->pb_opc);
1643         __swab32s(&body->pb_status);
1644         __swab64s(&body->pb_last_xid);
1645         __swab16s(&body->pb_tag);
1646         CLASSERT(offsetof(typeof(*body), pb_padding0) != 0);
1647         CLASSERT(offsetof(typeof(*body), pb_padding1) != 0);
1648         __swab64s(&body->pb_last_committed);
1649         __swab64s(&body->pb_transno);
1650         __swab32s(&body->pb_flags);
1651         __swab32s(&body->pb_op_flags);
1652         __swab32s(&body->pb_conn_cnt);
1653         __swab32s(&body->pb_timeout);
1654         __swab32s(&body->pb_service_time);
1655         __swab32s(&body->pb_limit);
1656         __swab64s(&body->pb_slv);
1657         __swab64s(&body->pb_pre_versions[0]);
1658         __swab64s(&body->pb_pre_versions[1]);
1659         __swab64s(&body->pb_pre_versions[2]);
1660         __swab64s(&body->pb_pre_versions[3]);
1661         __swab64s(&body->pb_mbits);
1662         CLASSERT(offsetof(typeof(*body), pb_padding64_0) != 0);
1663         CLASSERT(offsetof(typeof(*body), pb_padding64_1) != 0);
1664         CLASSERT(offsetof(typeof(*body), pb_padding64_2) != 0);
1665         /* While we need to maintain compatibility between
1666          * clients and servers without ptlrpc_body_v2 (< 2.3)
1667          * do not swab any fields beyond pb_jobid, as we are
1668          * using this swab function for both ptlrpc_body
1669          * and ptlrpc_body_v2. */
1670         /* pb_jobid is an ASCII string and should not be swabbed */
1671         CLASSERT(offsetof(typeof(*body), pb_jobid) != 0);
1672 }
1673
1674 void lustre_swab_connect(struct obd_connect_data *ocd)
1675 {
1676         __swab64s(&ocd->ocd_connect_flags);
1677         __swab32s(&ocd->ocd_version);
1678         __swab32s(&ocd->ocd_grant);
1679         __swab64s(&ocd->ocd_ibits_known);
1680         __swab32s(&ocd->ocd_index);
1681         __swab32s(&ocd->ocd_brw_size);
1682         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1683          * they are 8-byte values */
1684         __swab16s(&ocd->ocd_grant_tax_kb);
1685         __swab32s(&ocd->ocd_grant_max_blks);
1686         __swab64s(&ocd->ocd_transno);
1687         __swab32s(&ocd->ocd_group);
1688         __swab32s(&ocd->ocd_cksum_types);
1689         __swab32s(&ocd->ocd_instance);
1690         /* Fields after ocd_cksum_types are only accessible by the receiver
1691          * if the corresponding flag in ocd_connect_flags is set. Accessing
1692          * any field after ocd_maxbytes on the receiver without a valid flag
1693          * may result in out-of-bound memory access and kernel oops. */
1694         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1695                 __swab32s(&ocd->ocd_max_easize);
1696         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1697                 __swab64s(&ocd->ocd_maxbytes);
1698         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1699                 __swab16s(&ocd->ocd_maxmodrpcs);
1700         CLASSERT(offsetof(typeof(*ocd), padding0) != 0);
1701         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1702         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1703                 __swab64s(&ocd->ocd_connect_flags2);
1704         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1705         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1706         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1707         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1708         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1709         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1710         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1711         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1712         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1713         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1714         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1715         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1716         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1717 }
1718
1719 static void lustre_swab_ost_layout(struct ost_layout *ol)
1720 {
1721         __swab32s(&ol->ol_stripe_size);
1722         __swab32s(&ol->ol_stripe_count);
1723         __swab64s(&ol->ol_comp_start);
1724         __swab64s(&ol->ol_comp_end);
1725         __swab32s(&ol->ol_comp_id);
1726 }
1727
1728 void lustre_swab_obdo (struct obdo  *o)
1729 {
1730         __swab64s(&o->o_valid);
1731         lustre_swab_ost_id(&o->o_oi);
1732         __swab64s(&o->o_parent_seq);
1733         __swab64s(&o->o_size);
1734         __swab64s(&o->o_mtime);
1735         __swab64s(&o->o_atime);
1736         __swab64s(&o->o_ctime);
1737         __swab64s(&o->o_blocks);
1738         __swab64s(&o->o_grant);
1739         __swab32s(&o->o_blksize);
1740         __swab32s(&o->o_mode);
1741         __swab32s(&o->o_uid);
1742         __swab32s(&o->o_gid);
1743         __swab32s(&o->o_flags);
1744         __swab32s(&o->o_nlink);
1745         __swab32s(&o->o_parent_oid);
1746         __swab32s(&o->o_misc);
1747         __swab64s(&o->o_ioepoch);
1748         __swab32s(&o->o_stripe_idx);
1749         __swab32s(&o->o_parent_ver);
1750         lustre_swab_ost_layout(&o->o_layout);
1751         __swab32s(&o->o_layout_version);
1752         __swab32s(&o->o_uid_h);
1753         __swab32s(&o->o_gid_h);
1754         __swab64s(&o->o_data_version);
1755         __swab32s(&o->o_projid);
1756         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1757         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1758         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1759
1760 }
1761 EXPORT_SYMBOL(lustre_swab_obdo);
1762
1763 void lustre_swab_obd_statfs (struct obd_statfs *os)
1764 {
1765         __swab64s(&os->os_type);
1766         __swab64s(&os->os_blocks);
1767         __swab64s(&os->os_bfree);
1768         __swab64s(&os->os_bavail);
1769         __swab64s(&os->os_files);
1770         __swab64s(&os->os_ffree);
1771         /* no need to swab os_fsid */
1772         __swab32s(&os->os_bsize);
1773         __swab32s(&os->os_namelen);
1774         __swab64s(&os->os_maxbytes);
1775         __swab32s(&os->os_state);
1776         __swab32s(&os->os_fprecreated);
1777         __swab32s(&os->os_granted);
1778         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1779         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1780         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1781         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1782         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1783         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1784         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1785 }
1786
1787 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1788 {
1789         lustre_swab_ost_id(&ioo->ioo_oid);
1790         __swab32s(&ioo->ioo_max_brw);
1791         __swab32s(&ioo->ioo_bufcnt);
1792 }
1793
1794 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1795 {
1796         __swab64s(&nbr->rnb_offset);
1797         __swab32s(&nbr->rnb_len);
1798         __swab32s(&nbr->rnb_flags);
1799 }
1800
1801 void lustre_swab_ost_body (struct ost_body *b)
1802 {
1803         lustre_swab_obdo (&b->oa);
1804 }
1805
1806 void lustre_swab_ost_last_id(u64 *id)
1807 {
1808         __swab64s(id);
1809 }
1810
1811 void lustre_swab_generic_32s(__u32 *val)
1812 {
1813         __swab32s(val);
1814 }
1815
1816 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1817 {
1818         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1819         __swab64s(&desc->gl_flags);
1820         __swab64s(&desc->gl_ver);
1821         __swab64s(&desc->gl_hardlimit);
1822         __swab64s(&desc->gl_softlimit);
1823         __swab64s(&desc->gl_time);
1824         CLASSERT(offsetof(typeof(*desc), gl_pad2) != 0);
1825 }
1826 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1827
1828 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1829 {
1830         __swab32s(&desc->lgbd_status);
1831         __swab32s(&desc->lgbd_timeout);
1832         CLASSERT(offsetof(typeof(*desc), lgbd_padding) != 0);
1833 }
1834 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1835
1836 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1837 {
1838         __swab64s(&lvb->lvb_size);
1839         __swab64s(&lvb->lvb_mtime);
1840         __swab64s(&lvb->lvb_atime);
1841         __swab64s(&lvb->lvb_ctime);
1842         __swab64s(&lvb->lvb_blocks);
1843 }
1844 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1845
1846 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1847 {
1848         __swab64s(&lvb->lvb_size);
1849         __swab64s(&lvb->lvb_mtime);
1850         __swab64s(&lvb->lvb_atime);
1851         __swab64s(&lvb->lvb_ctime);
1852         __swab64s(&lvb->lvb_blocks);
1853         __swab32s(&lvb->lvb_mtime_ns);
1854         __swab32s(&lvb->lvb_atime_ns);
1855         __swab32s(&lvb->lvb_ctime_ns);
1856         __swab32s(&lvb->lvb_padding);
1857 }
1858 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1859
1860 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1861 {
1862         __swab64s(&lvb->lvb_flags);
1863         __swab64s(&lvb->lvb_id_may_rel);
1864         __swab64s(&lvb->lvb_id_rel);
1865         __swab64s(&lvb->lvb_id_qunit);
1866         __swab64s(&lvb->lvb_pad1);
1867 }
1868 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1869
1870 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1871 {
1872         __swab32s(&lvb->lvb_status);
1873         __swab32s(&lvb->lvb_index);
1874         CLASSERT(offsetof(typeof(*lvb), lvb_padding) != 0);
1875 }
1876 EXPORT_SYMBOL(lustre_swab_barrier_lvb);
1877
1878 void lustre_swab_mdt_body (struct mdt_body *b)
1879 {
1880         lustre_swab_lu_fid(&b->mbo_fid1);
1881         lustre_swab_lu_fid(&b->mbo_fid2);
1882         /* handle is opaque */
1883         __swab64s(&b->mbo_valid);
1884         __swab64s(&b->mbo_size);
1885         __swab64s(&b->mbo_mtime);
1886         __swab64s(&b->mbo_atime);
1887         __swab64s(&b->mbo_ctime);
1888         __swab64s(&b->mbo_blocks);
1889         __swab64s(&b->mbo_version);
1890         __swab64s(&b->mbo_t_state);
1891         __swab32s(&b->mbo_fsuid);
1892         __swab32s(&b->mbo_fsgid);
1893         __swab32s(&b->mbo_capability);
1894         __swab32s(&b->mbo_mode);
1895         __swab32s(&b->mbo_uid);
1896         __swab32s(&b->mbo_gid);
1897         __swab32s(&b->mbo_flags);
1898         __swab32s(&b->mbo_rdev);
1899         __swab32s(&b->mbo_nlink);
1900         __swab32s(&b->mbo_layout_gen);
1901         __swab32s(&b->mbo_suppgid);
1902         __swab32s(&b->mbo_eadatasize);
1903         __swab32s(&b->mbo_aclsize);
1904         __swab32s(&b->mbo_max_mdsize);
1905         CLASSERT(offsetof(typeof(*b), mbo_unused3) != 0);
1906         __swab32s(&b->mbo_uid_h);
1907         __swab32s(&b->mbo_gid_h);
1908         __swab32s(&b->mbo_projid);
1909         __swab64s(&b->mbo_dom_size);
1910         __swab64s(&b->mbo_dom_blocks);
1911         CLASSERT(offsetof(typeof(*b), mbo_padding_8) != 0);
1912         CLASSERT(offsetof(typeof(*b), mbo_padding_9) != 0);
1913         CLASSERT(offsetof(typeof(*b), mbo_padding_10) != 0);
1914 }
1915
1916 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1917 {
1918         /* mio_open_handle is opaque */
1919         CLASSERT(offsetof(typeof(*b), mio_unused1) != 0);
1920         CLASSERT(offsetof(typeof(*b), mio_unused2) != 0);
1921         CLASSERT(offsetof(typeof(*b), mio_padding) != 0);
1922 }
1923
1924 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1925 {
1926         int i;
1927
1928         __swab32s(&mti->mti_lustre_ver);
1929         __swab32s(&mti->mti_stripe_index);
1930         __swab32s(&mti->mti_config_ver);
1931         __swab32s(&mti->mti_flags);
1932         __swab32s(&mti->mti_instance);
1933         __swab32s(&mti->mti_nid_count);
1934         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1935         for (i = 0; i < MTI_NIDS_MAX; i++)
1936                 __swab64s(&mti->mti_nids[i]);
1937 }
1938
1939 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1940 {
1941         __u8 i;
1942
1943         __swab64s(&entry->mne_version);
1944         __swab32s(&entry->mne_instance);
1945         __swab32s(&entry->mne_index);
1946         __swab32s(&entry->mne_length);
1947
1948         /* mne_nid_(count|type) must be one byte size because we're gonna
1949          * access it w/o swapping. */
1950         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1951         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1952
1953         /* remove this assertion if ipv6 is supported. */
1954         LASSERT(entry->mne_nid_type == 0);
1955         for (i = 0; i < entry->mne_nid_count; i++) {
1956                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1957                 __swab64s(&entry->u.nids[i]);
1958         }
1959 }
1960 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1961
1962 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1963 {
1964         __swab64s(&body->mcb_offset);
1965         __swab32s(&body->mcb_units);
1966         __swab16s(&body->mcb_type);
1967 }
1968
1969 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1970 {
1971         __swab64s(&body->mcr_offset);
1972         __swab64s(&body->mcr_size);
1973 }
1974
1975 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1976 {
1977         __swab64s (&i->dqi_bgrace);
1978         __swab64s (&i->dqi_igrace);
1979         __swab32s (&i->dqi_flags);
1980         __swab32s (&i->dqi_valid);
1981 }
1982
1983 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1984 {
1985         __swab64s (&b->dqb_ihardlimit);
1986         __swab64s (&b->dqb_isoftlimit);
1987         __swab64s (&b->dqb_curinodes);
1988         __swab64s (&b->dqb_bhardlimit);
1989         __swab64s (&b->dqb_bsoftlimit);
1990         __swab64s (&b->dqb_curspace);
1991         __swab64s (&b->dqb_btime);
1992         __swab64s (&b->dqb_itime);
1993         __swab32s (&b->dqb_valid);
1994         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1995 }
1996
1997 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1998 {
1999         __swab32s (&q->qc_cmd);
2000         __swab32s (&q->qc_type);
2001         __swab32s (&q->qc_id);
2002         __swab32s (&q->qc_stat);
2003         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
2004         lustre_swab_obd_dqblk (&q->qc_dqblk);
2005 }
2006
2007 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2008 {
2009         lustre_swab_lu_fid(&gf->gf_fid);
2010         __swab64s(&gf->gf_recno);
2011         __swab32s(&gf->gf_linkno);
2012         __swab32s(&gf->gf_pathlen);
2013 }
2014 EXPORT_SYMBOL(lustre_swab_fid2path);
2015
2016 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
2017 {
2018         __swab64s(&fm_extent->fe_logical);
2019         __swab64s(&fm_extent->fe_physical);
2020         __swab64s(&fm_extent->fe_length);
2021         __swab32s(&fm_extent->fe_flags);
2022         __swab32s(&fm_extent->fe_device);
2023 }
2024
2025 void lustre_swab_fiemap(struct fiemap *fiemap)
2026 {
2027         __u32 i;
2028
2029         __swab64s(&fiemap->fm_start);
2030         __swab64s(&fiemap->fm_length);
2031         __swab32s(&fiemap->fm_flags);
2032         __swab32s(&fiemap->fm_mapped_extents);
2033         __swab32s(&fiemap->fm_extent_count);
2034         __swab32s(&fiemap->fm_reserved);
2035
2036         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2037                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2038 }
2039
2040 void lustre_swab_idx_info(struct idx_info *ii)
2041 {
2042         __swab32s(&ii->ii_magic);
2043         __swab32s(&ii->ii_flags);
2044         __swab16s(&ii->ii_count);
2045         __swab32s(&ii->ii_attrs);
2046         lustre_swab_lu_fid(&ii->ii_fid);
2047         __swab64s(&ii->ii_version);
2048         __swab64s(&ii->ii_hash_start);
2049         __swab64s(&ii->ii_hash_end);
2050         __swab16s(&ii->ii_keysize);
2051         __swab16s(&ii->ii_recsize);
2052 }
2053
2054 void lustre_swab_lip_header(struct lu_idxpage *lip)
2055 {
2056         /* swab header */
2057         __swab32s(&lip->lip_magic);
2058         __swab16s(&lip->lip_flags);
2059         __swab16s(&lip->lip_nr);
2060 }
2061 EXPORT_SYMBOL(lustre_swab_lip_header);
2062
2063 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2064 {
2065         __swab32s(&rr->rr_opcode);
2066         __swab32s(&rr->rr_cap);
2067         __swab32s(&rr->rr_fsuid);
2068         /* rr_fsuid_h is unused */
2069         __swab32s(&rr->rr_fsgid);
2070         /* rr_fsgid_h is unused */
2071         __swab32s(&rr->rr_suppgid1);
2072         /* rr_suppgid1_h is unused */
2073         __swab32s(&rr->rr_suppgid2);
2074         /* rr_suppgid2_h is unused */
2075         lustre_swab_lu_fid(&rr->rr_fid1);
2076         lustre_swab_lu_fid(&rr->rr_fid2);
2077         __swab64s(&rr->rr_mtime);
2078         __swab64s(&rr->rr_atime);
2079         __swab64s(&rr->rr_ctime);
2080         __swab64s(&rr->rr_size);
2081         __swab64s(&rr->rr_blocks);
2082         __swab32s(&rr->rr_bias);
2083         __swab32s(&rr->rr_mode);
2084         __swab32s(&rr->rr_flags);
2085         __swab32s(&rr->rr_flags_h);
2086         __swab32s(&rr->rr_umask);
2087         __swab16s(&rr->rr_mirror_id);
2088
2089         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2090 };
2091
2092 void lustre_swab_lov_desc (struct lov_desc *ld)
2093 {
2094         __swab32s (&ld->ld_tgt_count);
2095         __swab32s (&ld->ld_active_tgt_count);
2096         __swab32s (&ld->ld_default_stripe_count);
2097         __swab32s (&ld->ld_pattern);
2098         __swab64s (&ld->ld_default_stripe_size);
2099         __swab64s (&ld->ld_default_stripe_offset);
2100         __swab32s (&ld->ld_qos_maxage);
2101         /* uuid endian insensitive */
2102 }
2103 EXPORT_SYMBOL(lustre_swab_lov_desc);
2104
2105 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2106 {
2107         __swab32s (&ld->ld_tgt_count);
2108         __swab32s (&ld->ld_active_tgt_count);
2109         __swab32s (&ld->ld_default_stripe_count);
2110         __swab32s (&ld->ld_pattern);
2111         __swab64s (&ld->ld_default_hash_size);
2112         __swab32s (&ld->ld_qos_maxage);
2113         /* uuid endian insensitive */
2114 }
2115
2116 /* This structure is always in little-endian */
2117 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2118 {
2119         int i;
2120
2121         __swab32s(&lmm1->lmv_magic);
2122         __swab32s(&lmm1->lmv_stripe_count);
2123         __swab32s(&lmm1->lmv_master_mdt_index);
2124         __swab32s(&lmm1->lmv_hash_type);
2125         __swab32s(&lmm1->lmv_layout_version);
2126         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2127                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2128 }
2129
2130 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2131 {
2132         switch (lmm->lmv_magic) {
2133         case LMV_MAGIC_V1:
2134                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2135                 break;
2136         default:
2137                 break;
2138         }
2139 }
2140 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2141
2142 void lustre_swab_lmv_user_md_objects(struct lmv_user_mds_data *lmd,
2143                                      int stripe_count)
2144 {
2145         int i;
2146
2147         for (i = 0; i < stripe_count; i++)
2148                 __swab32s(&(lmd[i].lum_mds));
2149 }
2150 EXPORT_SYMBOL(lustre_swab_lmv_user_md_objects);
2151
2152
2153 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2154 {
2155         __u32 count;
2156
2157         if (lum->lum_magic == LMV_MAGIC_FOREIGN) {
2158                 __swab32s(&lum->lum_magic);
2159                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_length);
2160                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_type);
2161                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_flags);
2162                 return;
2163         }
2164
2165         count = lum->lum_stripe_count;
2166         __swab32s(&lum->lum_magic);
2167         __swab32s(&lum->lum_stripe_count);
2168         __swab32s(&lum->lum_stripe_offset);
2169         __swab32s(&lum->lum_hash_type);
2170         __swab32s(&lum->lum_type);
2171         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2172         switch (lum->lum_magic) {
2173         case LMV_USER_MAGIC_SPECIFIC:
2174                 count = lum->lum_stripe_count;
2175                 /* fallthrough */
2176         case __swab32(LMV_USER_MAGIC_SPECIFIC):
2177                 lustre_swab_lmv_user_md_objects(lum->lum_objects, count);
2178                 break;
2179         default:
2180                 break;
2181         }
2182 }
2183 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2184
2185 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2186                               const char *msg)
2187 {
2188         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2189         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2190         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2191         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2192         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2193         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2194         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2195         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2196                lum->lmm_stripe_offset);
2197         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2198                 struct lov_user_md_v3 *v3 = (void *)lum;
2199                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2200         }
2201         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2202                 struct lov_user_md_v3 *v3 = (void *)lum;
2203                 int i;
2204
2205                 if (v3->lmm_pool_name[0] != '\0')
2206                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2207
2208                 CDEBUG(lvl, "\ttarget list:\n");
2209                 for (i = 0; i < v3->lmm_stripe_count; i++)
2210                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2211         }
2212 }
2213
2214 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2215                           const char *msg)
2216 {
2217         struct lov_comp_md_v1   *comp_v1;
2218         int                      i;
2219
2220         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2221                 return;
2222
2223         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2224             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2225                 lustre_print_v1v3(lvl, lum, msg);
2226                 return;
2227         }
2228
2229         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2230                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2231                 return;
2232         }
2233
2234         comp_v1 = (struct lov_comp_md_v1 *)lum;
2235         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2236         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2237         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2238         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2239         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2240         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2241         CDEBUG(lvl, "\tlcm_mirror_count: %#x\n\n", comp_v1->lcm_mirror_count);
2242
2243         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2244                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2245                 struct lov_user_md *v1;
2246
2247                 CDEBUG(lvl, "\tentry %d:\n", i);
2248                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2249                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2250                 if (ent->lcme_flags & LCME_FL_NOSYNC)
2251                         CDEBUG(lvl, "\tlcme_timestamp: %llu\n",
2252                                         ent->lcme_timestamp);
2253                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2254                        ent->lcme_extent.e_start);
2255                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2256                        ent->lcme_extent.e_end);
2257                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2258                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2259
2260                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2261                                 comp_v1->lcm_entries[i].lcme_offset);
2262                 lustre_print_v1v3(lvl, v1, msg);
2263         }
2264 }
2265 EXPORT_SYMBOL(lustre_print_user_md);
2266
2267 static void lustre_swab_lmm_oi(struct ost_id *oi)
2268 {
2269         __swab64s(&oi->oi.oi_id);
2270         __swab64s(&oi->oi.oi_seq);
2271 }
2272
2273 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2274 {
2275         ENTRY;
2276         __swab32s(&lum->lmm_magic);
2277         __swab32s(&lum->lmm_pattern);
2278         lustre_swab_lmm_oi(&lum->lmm_oi);
2279         __swab32s(&lum->lmm_stripe_size);
2280         __swab16s(&lum->lmm_stripe_count);
2281         __swab16s(&lum->lmm_stripe_offset);
2282         EXIT;
2283 }
2284
2285 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2286 {
2287         ENTRY;
2288         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2289         lustre_swab_lov_user_md_common(lum);
2290         EXIT;
2291 }
2292 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2293
2294 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2295 {
2296         ENTRY;
2297         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2298         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2299         /* lmm_pool_name nothing to do with char */
2300         EXIT;
2301 }
2302 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2303
2304 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2305 {
2306         struct lov_comp_md_entry_v1     *ent;
2307         struct lov_user_md_v1   *v1;
2308         struct lov_user_md_v3   *v3;
2309         int     i;
2310         bool    cpu_endian;
2311         __u32   off, size;
2312         __u16   ent_count, stripe_count;
2313         ENTRY;
2314
2315         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2316         ent_count = lum->lcm_entry_count;
2317         if (!cpu_endian)
2318                 __swab16s(&ent_count);
2319
2320         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2321         __swab32s(&lum->lcm_magic);
2322         __swab32s(&lum->lcm_size);
2323         __swab32s(&lum->lcm_layout_gen);
2324         __swab16s(&lum->lcm_flags);
2325         __swab16s(&lum->lcm_entry_count);
2326         __swab16s(&lum->lcm_mirror_count);
2327         CLASSERT(offsetof(typeof(*lum), lcm_padding1) != 0);
2328         CLASSERT(offsetof(typeof(*lum), lcm_padding2) != 0);
2329
2330         for (i = 0; i < ent_count; i++) {
2331                 ent = &lum->lcm_entries[i];
2332                 off = ent->lcme_offset;
2333                 size = ent->lcme_size;
2334
2335                 if (!cpu_endian) {
2336                         __swab32s(&off);
2337                         __swab32s(&size);
2338                 }
2339                 __swab32s(&ent->lcme_id);
2340                 __swab32s(&ent->lcme_flags);
2341                 __swab64s(&ent->lcme_timestamp);
2342                 __swab64s(&ent->lcme_extent.e_start);
2343                 __swab64s(&ent->lcme_extent.e_end);
2344                 __swab32s(&ent->lcme_offset);
2345                 __swab32s(&ent->lcme_size);
2346                 __swab32s(&ent->lcme_layout_gen);
2347                 CLASSERT(offsetof(typeof(*ent), lcme_padding_1) != 0);
2348
2349                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2350                 stripe_count = v1->lmm_stripe_count;
2351                 if (!cpu_endian)
2352                         __swab16s(&stripe_count);
2353
2354                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2355                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2356                         lustre_swab_lov_user_md_v1(v1);
2357                         if (size > sizeof(*v1))
2358                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2359                                                                 stripe_count);
2360                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2361                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2362                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2363                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2364                         v3 = (struct lov_user_md_v3 *)v1;
2365                         lustre_swab_lov_user_md_v3(v3);
2366                         if (size > sizeof(*v3))
2367                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2368                                                                 stripe_count);
2369                 } else {
2370                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2371                 }
2372         }
2373 }
2374 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2375
2376 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2377                                      int stripe_count)
2378 {
2379         int i;
2380         ENTRY;
2381         for (i = 0; i < stripe_count; i++) {
2382                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2383                 __swab32s(&(lod[i].l_ost_gen));
2384                 __swab32s(&(lod[i].l_ost_idx));
2385         }
2386         EXIT;
2387 }
2388 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2389
2390 void lustre_swab_lov_user_md(struct lov_user_md *lum, size_t size)
2391 {
2392         struct lov_user_md_v1 *v1;
2393         struct lov_user_md_v3 *v3;
2394         struct lov_foreign_md *lfm;
2395         __u16 stripe_count;
2396         ENTRY;
2397
2398         CDEBUG(D_IOCTL, "swabbing lov_user_md\n");
2399         switch (lum->lmm_magic) {
2400         case __swab32(LOV_MAGIC_V1):
2401         case LOV_USER_MAGIC_V1:
2402         {
2403                 v1 = (struct lov_user_md_v1 *)lum;
2404                 stripe_count = v1->lmm_stripe_count;
2405
2406                 if (lum->lmm_magic != LOV_USER_MAGIC_V1)
2407                         __swab16s(&stripe_count);
2408
2409                 lustre_swab_lov_user_md_v1(v1);
2410                 if (size > sizeof(*v1))
2411                         lustre_swab_lov_user_md_objects(v1->lmm_objects,
2412                                                         stripe_count);
2413
2414                 break;
2415         }
2416         case __swab32(LOV_MAGIC_V3):
2417         case LOV_USER_MAGIC_V3:
2418         {
2419                 v3 = (struct lov_user_md_v3 *)lum;
2420                 stripe_count = v3->lmm_stripe_count;
2421
2422                 if (lum->lmm_magic != LOV_USER_MAGIC_V3)
2423                         __swab16s(&stripe_count);
2424
2425                 lustre_swab_lov_user_md_v3(v3);
2426                 if (size > sizeof(*v3))
2427                         lustre_swab_lov_user_md_objects(v3->lmm_objects,
2428                                                         stripe_count);
2429                 break;
2430         }
2431         case __swab32(LOV_USER_MAGIC_SPECIFIC):
2432         case LOV_USER_MAGIC_SPECIFIC:
2433         {
2434                 v3 = (struct lov_user_md_v3 *)lum;
2435                 stripe_count = v3->lmm_stripe_count;
2436
2437                 if (lum->lmm_magic != LOV_USER_MAGIC_SPECIFIC)
2438                         __swab16s(&stripe_count);
2439
2440                 lustre_swab_lov_user_md_v3(v3);
2441                 lustre_swab_lov_user_md_objects(v3->lmm_objects, stripe_count);
2442                 break;
2443         }
2444         case __swab32(LOV_MAGIC_COMP_V1):
2445         case LOV_USER_MAGIC_COMP_V1:
2446                 lustre_swab_lov_comp_md_v1((struct lov_comp_md_v1 *)lum);
2447                 break;
2448         case __swab32(LOV_MAGIC_FOREIGN):
2449         case LOV_USER_MAGIC_FOREIGN:
2450         {
2451                 lfm = (struct lov_foreign_md *)lum;
2452                 __swab32s(&lfm->lfm_magic);
2453                 __swab32s(&lfm->lfm_length);
2454                 __swab32s(&lfm->lfm_type);
2455                 __swab32s(&lfm->lfm_flags);
2456                 break;
2457         }
2458         default:
2459                 CDEBUG(D_IOCTL, "Invalid LOV magic %08x\n", lum->lmm_magic);
2460         }
2461 }
2462 EXPORT_SYMBOL(lustre_swab_lov_user_md);
2463
2464 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2465 {
2466         ENTRY;
2467         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2468         __swab32s(&lmm->lmm_magic);
2469         __swab32s(&lmm->lmm_pattern);
2470         lustre_swab_lmm_oi(&lmm->lmm_oi);
2471         __swab32s(&lmm->lmm_stripe_size);
2472         __swab16s(&lmm->lmm_stripe_count);
2473         __swab16s(&lmm->lmm_layout_gen);
2474         EXIT;
2475 }
2476 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2477
2478 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2479 {
2480         int  i;
2481
2482         for (i = 0; i < RES_NAME_SIZE; i++)
2483                 __swab64s (&id->name[i]);
2484 }
2485
2486 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2487 {
2488         /* the lock data is a union and the first two fields are always an
2489          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2490          * data the same way. */
2491         __swab64s(&d->l_extent.start);
2492         __swab64s(&d->l_extent.end);
2493         __swab64s(&d->l_extent.gid);
2494         __swab64s(&d->l_flock.lfw_owner);
2495         __swab32s(&d->l_flock.lfw_pid);
2496 }
2497
2498 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2499 {
2500         __swab64s(&i->opc);
2501 }
2502
2503 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2504 {
2505         __swab32s(&r->lr_type);
2506         CLASSERT(offsetof(typeof(*r), lr_pad) != 0);
2507         lustre_swab_ldlm_res_id(&r->lr_name);
2508 }
2509
2510 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2511 {
2512         lustre_swab_ldlm_resource_desc (&l->l_resource);
2513         __swab32s (&l->l_req_mode);
2514         __swab32s (&l->l_granted_mode);
2515         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2516 }
2517
2518 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2519 {
2520         __swab32s (&rq->lock_flags);
2521         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2522         __swab32s (&rq->lock_count);
2523         /* lock_handle[] opaque */
2524 }
2525
2526 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2527 {
2528         __swab32s (&r->lock_flags);
2529         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2530         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2531         /* lock_handle opaque */
2532         __swab64s (&r->lock_policy_res1);
2533         __swab64s (&r->lock_policy_res2);
2534 }
2535
2536 void lustre_swab_quota_body(struct quota_body *b)
2537 {
2538         lustre_swab_lu_fid(&b->qb_fid);
2539         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2540         __swab32s(&b->qb_flags);
2541         __swab64s(&b->qb_count);
2542         __swab64s(&b->qb_usage);
2543         __swab64s(&b->qb_slv_ver);
2544 }
2545
2546 /* Dump functions */
2547 void dump_ioo(struct obd_ioobj *ioo)
2548 {
2549         CDEBUG(D_RPCTRACE,
2550                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2551                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2552                ioo->ioo_bufcnt);
2553 }
2554
2555 void dump_rniobuf(struct niobuf_remote *nb)
2556 {
2557         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2558                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2559 }
2560
2561 void dump_obdo(struct obdo *oa)
2562 {
2563         u64 valid = oa->o_valid;
2564
2565         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2566         if (valid & OBD_MD_FLID)
2567                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2568         if (valid & OBD_MD_FLFID)
2569                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2570                        oa->o_parent_seq);
2571         if (valid & OBD_MD_FLSIZE)
2572                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2573         if (valid & OBD_MD_FLMTIME)
2574                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2575         if (valid & OBD_MD_FLATIME)
2576                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2577         if (valid & OBD_MD_FLCTIME)
2578                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2579         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2580                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2581         if (valid & OBD_MD_FLGRANT)
2582                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2583         if (valid & OBD_MD_FLBLKSZ)
2584                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2585         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2586                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2587                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2588                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2589         if (valid & OBD_MD_FLUID)
2590                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2591         if (valid & OBD_MD_FLUID)
2592                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2593         if (valid & OBD_MD_FLGID)
2594                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2595         if (valid & OBD_MD_FLGID)
2596                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2597         if (valid & OBD_MD_FLFLAGS)
2598                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2599         if (valid & OBD_MD_FLNLINK)
2600                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2601         else if (valid & OBD_MD_FLCKSUM)
2602                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2603                        oa->o_nlink);
2604         if (valid & OBD_MD_FLPARENT)
2605                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2606                        oa->o_parent_oid);
2607         if (valid & OBD_MD_FLFID) {
2608                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2609                        oa->o_stripe_idx);
2610                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2611                        oa->o_parent_ver);
2612         }
2613         if (valid & OBD_MD_FLHANDLE)
2614                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2615                        oa->o_handle.cookie);
2616 }
2617
2618 void dump_ost_body(struct ost_body *ob)
2619 {
2620         dump_obdo(&ob->oa);
2621 }
2622
2623 void dump_rcs(__u32 *rc)
2624 {
2625         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2626 }
2627
2628 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2629 {
2630         LASSERT(req->rq_reqmsg);
2631
2632         switch (req->rq_reqmsg->lm_magic) {
2633         case LUSTRE_MSG_MAGIC_V2:
2634                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2635         default:
2636                 CERROR("bad lustre msg magic: %#08X\n",
2637                        req->rq_reqmsg->lm_magic);
2638         }
2639         return 0;
2640 }
2641
2642 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2643 {
2644         if (unlikely(!req->rq_repmsg))
2645                 return 0;
2646
2647         switch (req->rq_repmsg->lm_magic) {
2648         case LUSTRE_MSG_MAGIC_V2:
2649                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2650         default:
2651                 /* uninitialized yet */
2652                 return 0;
2653         }
2654 }
2655
2656 void _debug_req(struct ptlrpc_request *req,
2657                 struct libcfs_debug_msg_data *msgdata, const char *fmt, ...)
2658 {
2659         bool req_ok = req->rq_reqmsg != NULL;
2660         bool rep_ok = false;
2661         lnet_nid_t nid = LNET_NID_ANY;
2662         struct va_format vaf;
2663         va_list args;
2664         int rep_flags = -1;
2665         int rep_status = -1;
2666
2667         spin_lock(&req->rq_early_free_lock);
2668         if (req->rq_repmsg)
2669                 rep_ok = true;
2670
2671         if (ptlrpc_req_need_swab(req)) {
2672                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2673                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2674         }
2675
2676         if (rep_ok) {
2677                 rep_flags = lustre_msg_get_flags(req->rq_repmsg);
2678                 rep_status = lustre_msg_get_status(req->rq_repmsg);
2679         }
2680         spin_unlock(&req->rq_early_free_lock);
2681
2682         if (req->rq_import && req->rq_import->imp_connection)
2683                 nid = req->rq_import->imp_connection->c_peer.nid;
2684         else if (req->rq_export && req->rq_export->exp_connection)
2685                 nid = req->rq_export->exp_connection->c_peer.nid;
2686
2687         va_start(args, fmt);
2688         vaf.fmt = fmt;
2689         vaf.va = &args;
2690         libcfs_debug_msg(msgdata,
2691                          "%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",
2692                          &vaf,
2693                          req, req->rq_xid, req->rq_transno,
2694                          req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2695                          req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2696                          req->rq_import ?
2697                          req->rq_import->imp_obd->obd_name :
2698                          req->rq_export ?
2699                          req->rq_export->exp_client_uuid.uuid :
2700                          "<?>",
2701                          libcfs_nid2str(nid),
2702                          req->rq_request_portal, req->rq_reply_portal,
2703                          req->rq_reqlen, req->rq_replen,
2704                          req->rq_early_count, (s64)req->rq_timedout,
2705                          (s64)req->rq_deadline,
2706                          atomic_read(&req->rq_refcount),
2707                          DEBUG_REQ_FLAGS(req),
2708                          req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2709                          rep_flags, req->rq_status, rep_status,
2710                          req_ok ? lustre_msg_get_jobid(req->rq_reqmsg) ?: ""
2711                                 : "");
2712         va_end(args);
2713 }
2714 EXPORT_SYMBOL(_debug_req);
2715
2716 void lustre_swab_lustre_capa(struct lustre_capa *c)
2717 {
2718         lustre_swab_lu_fid(&c->lc_fid);
2719         __swab64s (&c->lc_opc);
2720         __swab64s (&c->lc_uid);
2721         __swab64s (&c->lc_gid);
2722         __swab32s (&c->lc_flags);
2723         __swab32s (&c->lc_keyid);
2724         __swab32s (&c->lc_timeout);
2725         __swab32s (&c->lc_expiry);
2726 }
2727
2728 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2729 {
2730         __swab64s (&k->lk_seq);
2731         __swab32s (&k->lk_keyid);
2732         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2733 }
2734
2735 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2736 {
2737         __swab32s(&state->hus_states);
2738         __swab32s(&state->hus_archive_id);
2739 }
2740
2741 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2742 {
2743         __swab32s(&hss->hss_valid);
2744         __swab64s(&hss->hss_setmask);
2745         __swab64s(&hss->hss_clearmask);
2746         __swab32s(&hss->hss_archive_id);
2747 }
2748
2749 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2750 {
2751         __swab64s(&extent->offset);
2752         __swab64s(&extent->length);
2753 }
2754
2755 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2756 {
2757         __swab32s(&action->hca_state);
2758         __swab32s(&action->hca_action);
2759         lustre_swab_hsm_extent(&action->hca_location);
2760 }
2761
2762 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2763 {
2764         lustre_swab_lu_fid(&hui->hui_fid);
2765         lustre_swab_hsm_extent(&hui->hui_extent);
2766 }
2767
2768 void lustre_swab_lu_extent(struct lu_extent *le)
2769 {
2770         __swab64s(&le->e_start);
2771         __swab64s(&le->e_end);
2772 }
2773
2774 void lustre_swab_layout_intent(struct layout_intent *li)
2775 {
2776         __swab32s(&li->li_opc);
2777         __swab32s(&li->li_flags);
2778         lustre_swab_lu_extent(&li->li_extent);
2779 }
2780
2781 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2782 {
2783         lustre_swab_lu_fid(&hpk->hpk_fid);
2784         __swab64s(&hpk->hpk_cookie);
2785         __swab64s(&hpk->hpk_extent.offset);
2786         __swab64s(&hpk->hpk_extent.length);
2787         __swab16s(&hpk->hpk_flags);
2788         __swab16s(&hpk->hpk_errval);
2789 }
2790
2791 void lustre_swab_hsm_request(struct hsm_request *hr)
2792 {
2793         __swab32s(&hr->hr_action);
2794         __swab32s(&hr->hr_archive_id);
2795         __swab64s(&hr->hr_flags);
2796         __swab32s(&hr->hr_itemcount);
2797         __swab32s(&hr->hr_data_len);
2798 }
2799
2800 void lustre_swab_object_update(struct object_update *ou)
2801 {
2802         struct object_update_param *param;
2803         size_t  i;
2804
2805         __swab16s(&ou->ou_type);
2806         __swab16s(&ou->ou_params_count);
2807         __swab32s(&ou->ou_result_size);
2808         __swab32s(&ou->ou_flags);
2809         __swab32s(&ou->ou_padding1);
2810         __swab64s(&ou->ou_batchid);
2811         lustre_swab_lu_fid(&ou->ou_fid);
2812         param = &ou->ou_params[0];
2813         for (i = 0; i < ou->ou_params_count; i++) {
2814                 __swab16s(&param->oup_len);
2815                 __swab16s(&param->oup_padding);
2816                 __swab32s(&param->oup_padding2);
2817                 param = (struct object_update_param *)((char *)param +
2818                          object_update_param_size(param));
2819         }
2820 }
2821
2822 void lustre_swab_object_update_request(struct object_update_request *our)
2823 {
2824         size_t i;
2825         __swab32s(&our->ourq_magic);
2826         __swab16s(&our->ourq_count);
2827         __swab16s(&our->ourq_padding);
2828         for (i = 0; i < our->ourq_count; i++) {
2829                 struct object_update *ou;
2830
2831                 ou = object_update_request_get(our, i, NULL);
2832                 if (ou == NULL)
2833                         return;
2834                 lustre_swab_object_update(ou);
2835         }
2836 }
2837
2838 void lustre_swab_object_update_result(struct object_update_result *our)
2839 {
2840         __swab32s(&our->our_rc);
2841         __swab16s(&our->our_datalen);
2842         __swab16s(&our->our_padding);
2843 }
2844
2845 void lustre_swab_object_update_reply(struct object_update_reply *our)
2846 {
2847         size_t i;
2848
2849         __swab32s(&our->ourp_magic);
2850         __swab16s(&our->ourp_count);
2851         __swab16s(&our->ourp_padding);
2852         for (i = 0; i < our->ourp_count; i++) {
2853                 struct object_update_result *ourp;
2854
2855                 __swab16s(&our->ourp_lens[i]);
2856                 ourp = object_update_result_get(our, i, NULL);
2857                 if (ourp == NULL)
2858                         return;
2859                 lustre_swab_object_update_result(ourp);
2860         }
2861 }
2862
2863 void lustre_swab_out_update_header(struct out_update_header *ouh)
2864 {
2865         __swab32s(&ouh->ouh_magic);
2866         __swab32s(&ouh->ouh_count);
2867         __swab32s(&ouh->ouh_inline_length);
2868         __swab32s(&ouh->ouh_reply_size);
2869 }
2870 EXPORT_SYMBOL(lustre_swab_out_update_header);
2871
2872 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2873 {
2874         __swab32s(&oub->oub_size);
2875         __swab32s(&oub->oub_padding);
2876 }
2877 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2878
2879 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2880 {
2881         __swab64s(&msl->msl_flags);
2882 }
2883
2884 void lustre_swab_close_data(struct close_data *cd)
2885 {
2886         lustre_swab_lu_fid(&cd->cd_fid);
2887         __swab64s(&cd->cd_data_version);
2888 }
2889
2890 void lustre_swab_close_data_resync_done(struct close_data_resync_done *resync)
2891 {
2892         int i;
2893
2894         __swab32s(&resync->resync_count);
2895         /* after swab, resync_count must in CPU endian */
2896         if (resync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
2897                 for (i = 0; i < resync->resync_count; i++)
2898                         __swab32s(&resync->resync_ids_inline[i]);
2899         }
2900 }
2901 EXPORT_SYMBOL(lustre_swab_close_data_resync_done);
2902
2903 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2904 {
2905         __swab32s(&lr->lr_event);
2906         __swab32s(&lr->lr_index);
2907         __swab32s(&lr->lr_flags);
2908         __swab32s(&lr->lr_valid);
2909         __swab32s(&lr->lr_speed);
2910         __swab16s(&lr->lr_version);
2911         __swab16s(&lr->lr_active);
2912         __swab16s(&lr->lr_param);
2913         __swab16s(&lr->lr_async_windows);
2914         __swab32s(&lr->lr_flags);
2915         lustre_swab_lu_fid(&lr->lr_fid);
2916         lustre_swab_lu_fid(&lr->lr_fid2);
2917         __swab32s(&lr->lr_comp_id);
2918         CLASSERT(offsetof(typeof(*lr), lr_padding_0) != 0);
2919         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2920         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2921         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2922 }
2923
2924 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2925 {
2926         __swab32s(&lr->lr_status);
2927         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2928         __swab64s(&lr->lr_repaired);
2929 }
2930
2931 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
2932 {
2933         lustre_swab_lu_fid(&rec->lor_fid);
2934         __swab32s(&rec->lor_uid);
2935         __swab32s(&rec->lor_gid);
2936 }
2937
2938 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2939 {
2940         lustre_swab_lu_fid(&ent->loe_key);
2941         lustre_swab_orphan_rec(&ent->loe_rec);
2942 }
2943 EXPORT_SYMBOL(lustre_swab_orphan_ent);
2944
2945 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
2946 {
2947         lustre_swab_lu_fid(&ent->loe_key);
2948         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2949         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2950         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding) != 0);
2951 }
2952 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
2953
2954 void lustre_swab_orphan_ent_v3(struct lu_orphan_ent_v3 *ent)
2955 {
2956         lustre_swab_lu_fid(&ent->loe_key);
2957         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2958         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2959         __swab32s(&ent->loe_rec.lor_layout_version);
2960         __swab32s(&ent->loe_rec.lor_range);
2961         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding_1) != 0);
2962         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding_2) != 0);
2963 }
2964 EXPORT_SYMBOL(lustre_swab_orphan_ent_v3);
2965
2966 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
2967 {
2968         __swab16s(&ladvise->lla_advice);
2969         __swab16s(&ladvise->lla_value1);
2970         __swab32s(&ladvise->lla_value2);
2971         __swab64s(&ladvise->lla_start);
2972         __swab64s(&ladvise->lla_end);
2973         __swab32s(&ladvise->lla_value3);
2974         __swab32s(&ladvise->lla_value4);
2975 }
2976 EXPORT_SYMBOL(lustre_swab_ladvise);
2977
2978 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
2979 {
2980         __swab32s(&ladvise_hdr->lah_magic);
2981         __swab32s(&ladvise_hdr->lah_count);
2982         __swab64s(&ladvise_hdr->lah_flags);
2983         __swab32s(&ladvise_hdr->lah_value1);
2984         __swab32s(&ladvise_hdr->lah_value2);
2985         __swab64s(&ladvise_hdr->lah_value3);
2986 }
2987 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);