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.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/ptlrpc/pack_generic.c
  37  *
  38  * (Un)packing of OST requests
  39  *
  40  * Author: Peter J. Braam <braam@clusterfs.com>
  41  * Author: Phil Schwan <phil@clusterfs.com>
  42  * Author: Eric Barton <eeb@clusterfs.com>
  43  */
  44
  45 #define DEBUG_SUBSYSTEM S_RPC
  46
  47 #include <libcfs/libcfs.h>
  48
  49 #include <obd_support.h>
  50 #include <obd_class.h>
  51 #include <lustre_net.h>
  52 #include <obd_cksum.h>
  53 #include <lustre/ll_fiemap.h>
  54 #include <lustre_update.h>
  55
  56 static inline int lustre_msg_hdr_size_v2(int count)
  57 {
  58         return cfs_size_round(offsetof(struct lustre_msg_v2,
  59                                        lm_buflens[count]));
  60 }
  61
  62 int lustre_msg_hdr_size(__u32 magic, int count)
  63 {
  64         switch (magic) {
  65         case LUSTRE_MSG_MAGIC_V2:
  66                 return lustre_msg_hdr_size_v2(count);
  67         default:
  68                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  69                 return -EINVAL;
  70         }
  71 }
  72 EXPORT_SYMBOL(lustre_msg_hdr_size);
  73
  74 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  75                             int index)
  76 {
  77         if (inout)
  78                 lustre_set_req_swabbed(req, index);
  79         else
  80                 lustre_set_rep_swabbed(req, index);
  81 }
  82 EXPORT_SYMBOL(ptlrpc_buf_set_swabbed);
  83
  84 int ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  85                          int index)
  86 {
  87         if (inout)
  88                 return (ptlrpc_req_need_swab(req) &&
  89                         !lustre_req_swabbed(req, index));
  90         else
  91                 return (ptlrpc_rep_need_swab(req) &&
  92                         !lustre_rep_swabbed(req, index));
  93 }
  94 EXPORT_SYMBOL(ptlrpc_buf_need_swab);
  95
  96 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  97                                               __u32 version)
  98 {
  99         __u32 ver = lustre_msg_get_version(msg);
 100         return (ver & LUSTRE_VERSION_MASK) != version;
 101 }
 102
 103 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version)
 104 {
 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 0;
 114         }
 115 }
 116 EXPORT_SYMBOL(lustre_msg_check_version);
 117
 118 /* early reply size */
 119 int lustre_msg_early_size()
 120 {
 121         static int size = 0;
 122         if (!size) {
 123                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 124                  * with the old client (< 2.3) which doesn't have pb_jobid
 125                  * in the ptlrpc_body.
 126                  *
 127                  * XXX Remove this whenever we dorp interoprability with such
 128                  *     client.
 129                  */
 130                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 131                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 132         }
 133         return size;
 134 }
 135 EXPORT_SYMBOL(lustre_msg_early_size);
 136
 137 int lustre_msg_size_v2(int count, __u32 *lengths)
 138 {
 139         int size;
 140         int i;
 141
 142         size = lustre_msg_hdr_size_v2(count);
 143         for (i = 0; i < count; i++)
 144                 size += cfs_size_round(lengths[i]);
 145
 146         return size;
 147 }
 148 EXPORT_SYMBOL(lustre_msg_size_v2);
 149
 150 /* This returns the size of the buffer that is required to hold a lustre_msg
 151  * with the given sub-buffer lengths.
 152  * NOTE: this should only be used for NEW requests, and should always be
 153  *       in the form of a v2 request.  If this is a connection to a v1
 154  *       target then the first buffer will be stripped because the ptlrpc
 155  *       data is part of the lustre_msg_v1 header. b=14043 */
 156 int lustre_msg_size(__u32 magic, int count, __u32 *lens)
 157 {
 158         __u32 size[] = { sizeof(struct ptlrpc_body) };
 159
 160         if (!lens) {
 161                 LASSERT(count == 1);
 162                 lens = size;
 163         }
 164
 165         LASSERT(count > 0);
 166         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 167
 168         switch (magic) {
 169         case LUSTRE_MSG_MAGIC_V2:
 170                 return lustre_msg_size_v2(count, lens);
 171         default:
 172                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 173                 return -EINVAL;
 174         }
 175 }
 176 EXPORT_SYMBOL(lustre_msg_size);
 177
 178 /* This is used to determine the size of a buffer that was already packed
 179  * and will correctly handle the different message formats. */
 180 int lustre_packed_msg_size(struct lustre_msg *msg)
 181 {
 182         switch (msg->lm_magic) {
 183         case LUSTRE_MSG_MAGIC_V2:
 184                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 185         default:
 186                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 187                 return 0;
 188         }
 189 }
 190 EXPORT_SYMBOL(lustre_packed_msg_size);
 191
 192 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 193                         char **bufs)
 194 {
 195         char *ptr;
 196         int i;
 197
 198         msg->lm_bufcount = count;
 199         /* XXX: lm_secflvr uninitialized here */
 200         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 201
 202         for (i = 0; i < count; i++)
 203                 msg->lm_buflens[i] = lens[i];
 204
 205         if (bufs == NULL)
 206                 return;
 207
 208         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 209         for (i = 0; i < count; i++) {
 210                 char *tmp = bufs[i];
 211                 LOGL(tmp, lens[i], ptr);
 212         }
 213 }
 214 EXPORT_SYMBOL(lustre_init_msg_v2);
 215
 216 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 217                                   int count, __u32 *lens, char **bufs)
 218 {
 219         int reqlen, rc;
 220
 221         reqlen = lustre_msg_size_v2(count, lens);
 222
 223         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 224         if (rc)
 225                 return rc;
 226
 227         req->rq_reqlen = reqlen;
 228
 229         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 230         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 231         return 0;
 232 }
 233
 234 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 235                         __u32 *lens, char **bufs)
 236 {
 237         __u32 size[] = { sizeof(struct ptlrpc_body) };
 238
 239         if (!lens) {
 240                 LASSERT(count == 1);
 241                 lens = size;
 242         }
 243
 244         LASSERT(count > 0);
 245         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 246
 247         /* only use new format, we don't need to be compatible with 1.4 */
 248         magic = LUSTRE_MSG_MAGIC_V2;
 249
 250         switch (magic) {
 251         case LUSTRE_MSG_MAGIC_V2:
 252                 return lustre_pack_request_v2(req, count, lens, bufs);
 253         default:
 254                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 255                 return -EINVAL;
 256         }
 257 }
 258 EXPORT_SYMBOL(lustre_pack_request);
 259
 260 #if RS_DEBUG
 261 struct list_head ptlrpc_rs_debug_lru =
 262         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 263 spinlock_t ptlrpc_rs_debug_lock;
 264
 265 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 266 do {                                                                    \
 267         spin_lock(&ptlrpc_rs_debug_lock);                               \
 268         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 269         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 270 } while (0)
 271
 272 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 273 do {                                                                    \
 274         spin_lock(&ptlrpc_rs_debug_lock);                               \
 275         list_del(&(rs)->rs_debug_list);                         \
 276         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 277 } while (0)
 278 #else
 279 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 280 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 281 #endif
 282
 283 struct ptlrpc_reply_state *
 284 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 285 {
 286         struct ptlrpc_reply_state *rs = NULL;
 287
 288         spin_lock(&svcpt->scp_rep_lock);
 289
 290         /* See if we have anything in a pool, and wait if nothing */
 291         while (list_empty(&svcpt->scp_rep_idle)) {
 292                 struct l_wait_info      lwi;
 293                 int                     rc;
 294
 295                 spin_unlock(&svcpt->scp_rep_lock);
 296                 /* If we cannot get anything for some long time, we better
 297                  * bail out instead of waiting infinitely */
 298                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 299                 rc = l_wait_event(svcpt->scp_rep_waitq,
 300                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 301                 if (rc != 0)
 302                         goto out;
 303                 spin_lock(&svcpt->scp_rep_lock);
 304         }
 305
 306         rs = list_entry(svcpt->scp_rep_idle.next,
 307                             struct ptlrpc_reply_state, rs_list);
 308         list_del(&rs->rs_list);
 309
 310         spin_unlock(&svcpt->scp_rep_lock);
 311
 312         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 313         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 314         rs->rs_svcpt = svcpt;
 315         rs->rs_prealloc = 1;
 316 out:
 317         return rs;
 318 }
 319
 320 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 321 {
 322         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 323
 324         spin_lock(&svcpt->scp_rep_lock);
 325         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 326         spin_unlock(&svcpt->scp_rep_lock);
 327         wake_up(&svcpt->scp_rep_waitq);
 328 }
 329
 330 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 331                          __u32 *lens, char **bufs, int flags)
 332 {
 333         struct ptlrpc_reply_state *rs;
 334         int                        msg_len, rc;
 335         ENTRY;
 336
 337         LASSERT(req->rq_reply_state == NULL);
 338
 339         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 340                 spin_lock(&req->rq_lock);
 341                 req->rq_packed_final = 1;
 342                 spin_unlock(&req->rq_lock);
 343         }
 344
 345         msg_len = lustre_msg_size_v2(count, lens);
 346         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 347         if (rc)
 348                 RETURN(rc);
 349
 350         rs = req->rq_reply_state;
 351         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 352         rs->rs_cb_id.cbid_fn = reply_out_callback;
 353         rs->rs_cb_id.cbid_arg = rs;
 354         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 355         INIT_LIST_HEAD(&rs->rs_exp_list);
 356         INIT_LIST_HEAD(&rs->rs_obd_list);
 357         INIT_LIST_HEAD(&rs->rs_list);
 358         spin_lock_init(&rs->rs_lock);
 359
 360         req->rq_replen = msg_len;
 361         req->rq_reply_state = rs;
 362         req->rq_repmsg = rs->rs_msg;
 363
 364         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 365         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 366
 367         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 368
 369         RETURN(0);
 370 }
 371 EXPORT_SYMBOL(lustre_pack_reply_v2);
 372
 373 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 374                             char **bufs, int flags)
 375 {
 376         int rc = 0;
 377         __u32 size[] = { sizeof(struct ptlrpc_body) };
 378
 379         if (!lens) {
 380                 LASSERT(count == 1);
 381                 lens = size;
 382         }
 383
 384         LASSERT(count > 0);
 385         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 386
 387         switch (req->rq_reqmsg->lm_magic) {
 388         case LUSTRE_MSG_MAGIC_V2:
 389                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 390                 break;
 391         default:
 392                 LASSERTF(0, "incorrect message magic: %08x\n",
 393                          req->rq_reqmsg->lm_magic);
 394                 rc = -EINVAL;
 395         }
 396         if (rc != 0)
 397                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 398                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 399         return rc;
 400 }
 401 EXPORT_SYMBOL(lustre_pack_reply_flags);
 402
 403 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 404                       char **bufs)
 405 {
 406         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 407 }
 408 EXPORT_SYMBOL(lustre_pack_reply);
 409
 410 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, int n, int min_size)
 411 {
 412         int i, offset, buflen, bufcount;
 413
 414         LASSERT(m != NULL);
 415         LASSERT(n >= 0);
 416
 417         bufcount = m->lm_bufcount;
 418         if (unlikely(n >= bufcount)) {
 419                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 420                        m, n, bufcount);
 421                 return NULL;
 422         }
 423
 424         buflen = m->lm_buflens[n];
 425         if (unlikely(buflen < min_size)) {
 426                 CERROR("msg %p buffer[%d] size %d too small "
 427                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 428                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 429                 return NULL;
 430         }
 431
 432         offset = lustre_msg_hdr_size_v2(bufcount);
 433         for (i = 0; i < n; i++)
 434                 offset += cfs_size_round(m->lm_buflens[i]);
 435
 436         return (char *)m + offset;
 437 }
 438
 439 void *lustre_msg_buf(struct lustre_msg *m, int n, int min_size)
 440 {
 441         switch (m->lm_magic) {
 442         case LUSTRE_MSG_MAGIC_V2:
 443                 return lustre_msg_buf_v2(m, n, min_size);
 444         default:
 445                 LASSERTF(0, "incorrect message magic: %08x(msg:%p)\n", m->lm_magic, m);
 446                 return NULL;
 447         }
 448 }
 449 EXPORT_SYMBOL(lustre_msg_buf);
 450
 451 int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, int segment,
 452                          unsigned int newlen, int move_data)
 453 {
 454         char   *tail = NULL, *newpos;
 455         int     tail_len = 0, n;
 456
 457         LASSERT(msg);
 458         LASSERT(msg->lm_bufcount > segment);
 459         LASSERT(msg->lm_buflens[segment] >= newlen);
 460
 461         if (msg->lm_buflens[segment] == newlen)
 462                 goto out;
 463
 464         if (move_data && msg->lm_bufcount > segment + 1) {
 465                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 466                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 467                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 468         }
 469
 470         msg->lm_buflens[segment] = newlen;
 471
 472         if (tail && tail_len) {
 473                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 474                 LASSERT(newpos <= tail);
 475                 if (newpos != tail)
 476                         memmove(newpos, tail, tail_len);
 477         }
 478 out:
 479         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 480 }
 481
 482 /*
 483  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 484  * we also move data forward from @segment + 1.
 485  *
 486  * if @newlen == 0, we remove the segment completely, but we still keep the
 487  * totally bufcount the same to save possible data moving. this will leave a
 488  * unused segment with size 0 at the tail, but that's ok.
 489  *
 490  * return new msg size after shrinking.
 491  *
 492  * CAUTION:
 493  * + if any buffers higher than @segment has been filled in, must call shrink
 494  *   with non-zero @move_data.
 495  * + caller should NOT keep pointers to msg buffers which higher than @segment
 496  *   after call shrink.
 497  */
 498 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 499                       unsigned int newlen, int move_data)
 500 {
 501         switch (msg->lm_magic) {
 502         case LUSTRE_MSG_MAGIC_V2:
 503                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 504         default:
 505                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 506         }
 507 }
 508 EXPORT_SYMBOL(lustre_shrink_msg);
 509
 510 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 511 {
 512         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 513
 514         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 515         LASSERT(!rs->rs_difficult || rs->rs_handled);
 516         LASSERT(!rs->rs_on_net);
 517         LASSERT(!rs->rs_scheduled);
 518         LASSERT(rs->rs_export == NULL);
 519         LASSERT(rs->rs_nlocks == 0);
 520         LASSERT(list_empty(&rs->rs_exp_list));
 521         LASSERT(list_empty(&rs->rs_obd_list));
 522
 523         sptlrpc_svc_free_rs(rs);
 524 }
 525 EXPORT_SYMBOL(lustre_free_reply_state);
 526
 527 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 528 {
 529         int swabbed, required_len, i;
 530
 531         /* Now we know the sender speaks my language. */
 532         required_len = lustre_msg_hdr_size_v2(0);
 533         if (len < required_len) {
 534                 /* can't even look inside the message */
 535                 CERROR("message length %d too small for lustre_msg\n", len);
 536                 return -EINVAL;
 537         }
 538
 539         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 540
 541         if (swabbed) {
 542                 __swab32s(&m->lm_magic);
 543                 __swab32s(&m->lm_bufcount);
 544                 __swab32s(&m->lm_secflvr);
 545                 __swab32s(&m->lm_repsize);
 546                 __swab32s(&m->lm_cksum);
 547                 __swab32s(&m->lm_flags);
 548                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 549                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 550         }
 551
 552         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 553         if (len < required_len) {
 554                 /* didn't receive all the buffer lengths */
 555                 CERROR ("message length %d too small for %d buflens\n",
 556                         len, m->lm_bufcount);
 557                 return -EINVAL;
 558         }
 559
 560         for (i = 0; i < m->lm_bufcount; i++) {
 561                 if (swabbed)
 562                         __swab32s(&m->lm_buflens[i]);
 563                 required_len += cfs_size_round(m->lm_buflens[i]);
 564         }
 565
 566         if (len < required_len) {
 567                 CERROR("len: %d, required_len %d\n", len, required_len);
 568                 CERROR("bufcount: %d\n", m->lm_bufcount);
 569                 for (i = 0; i < m->lm_bufcount; i++)
 570                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 571                 return -EINVAL;
 572         }
 573
 574         return swabbed;
 575 }
 576
 577 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 578 {
 579         int required_len, rc;
 580         ENTRY;
 581
 582         /* We can provide a slightly better error log, if we check the
 583          * message magic and version first.  In the future, struct
 584          * lustre_msg may grow, and we'd like to log a version mismatch,
 585          * rather than a short message.
 586          *
 587          */
 588         required_len = offsetof(struct lustre_msg, lm_magic) +
 589                        sizeof(m->lm_magic);
 590         if (len < required_len) {
 591                 /* can't even look inside the message */
 592                 CERROR("message length %d too small for magic/version check\n",
 593                        len);
 594                 RETURN(-EINVAL);
 595         }
 596
 597         rc = lustre_unpack_msg_v2(m, len);
 598
 599         RETURN(rc);
 600 }
 601 EXPORT_SYMBOL(__lustre_unpack_msg);
 602
 603 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 604 {
 605         int rc;
 606         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 607         if (rc == 1) {
 608                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 609                 rc = 0;
 610         }
 611         return rc;
 612 }
 613 EXPORT_SYMBOL(ptlrpc_unpack_req_msg);
 614
 615 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 616 {
 617         int rc;
 618         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 619         if (rc == 1) {
 620                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 621                 rc = 0;
 622         }
 623         return rc;
 624 }
 625 EXPORT_SYMBOL(ptlrpc_unpack_rep_msg);
 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 int lustre_msg_buflen_v2(struct lustre_msg_v2 *m, int 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 int lustre_msg_buflen(struct lustre_msg *m, int 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 -EINVAL;
 701         }
 702 }
 703 EXPORT_SYMBOL(lustre_msg_buflen);
 704
 705 static inline void
 706 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, int n, int 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, int n, int 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 EXPORT_SYMBOL(lustre_msg_set_buflen);
 726
 727 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 728  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 729 int lustre_msg_bufcount(struct lustre_msg *m)
 730 {
 731         switch (m->lm_magic) {
 732         case LUSTRE_MSG_MAGIC_V2:
 733                 return m->lm_bufcount;
 734         default:
 735                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 736                 return -EINVAL;
 737         }
 738 }
 739 EXPORT_SYMBOL(lustre_msg_bufcount);
 740
 741 char *lustre_msg_string(struct lustre_msg *m, int index, int max_len)
 742 {
 743         /* max_len == 0 means the string should fill the buffer */
 744         char *str;
 745         int slen, blen;
 746
 747         switch (m->lm_magic) {
 748         case LUSTRE_MSG_MAGIC_V2:
 749                 str = lustre_msg_buf_v2(m, index, 0);
 750                 blen = lustre_msg_buflen_v2(m, index);
 751                 break;
 752         default:
 753                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 754         }
 755
 756         if (str == NULL) {
 757                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 758                 return NULL;
 759         }
 760
 761         slen = strnlen(str, blen);
 762
 763         if (slen == blen) {                     /* not NULL terminated */
 764                 CERROR("can't unpack non-NULL terminated string in "
 765                         "msg %p buffer[%d] len %d\n", m, index, blen);
 766                 return NULL;
 767         }
 768
 769         if (max_len == 0) {
 770                 if (slen != blen - 1) {
 771                         CERROR("can't unpack short string in msg %p "
 772                                "buffer[%d] len %d: strlen %d\n",
 773                                m, index, blen, slen);
 774                         return NULL;
 775                 }
 776         } else if (slen > max_len) {
 777                 CERROR("can't unpack oversized string in msg %p "
 778                        "buffer[%d] len %d strlen %d: max %d expected\n",
 779                        m, index, blen, slen, max_len);
 780                 return NULL;
 781         }
 782
 783         return str;
 784 }
 785 EXPORT_SYMBOL(lustre_msg_string);
 786
 787 /* Wrap up the normal fixed length cases */
 788 static inline void *__lustre_swab_buf(struct lustre_msg *msg, int index,
 789                                       int min_size, void *swabber)
 790 {
 791         void *ptr = NULL;
 792
 793         LASSERT(msg != NULL);
 794         switch (msg->lm_magic) {
 795         case LUSTRE_MSG_MAGIC_V2:
 796                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 797                 break;
 798         default:
 799                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 800         }
 801
 802         if (ptr && swabber)
 803                 ((void (*)(void *))swabber)(ptr);
 804
 805         return ptr;
 806 }
 807
 808 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 809 {
 810         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 811                                  sizeof(struct ptlrpc_body_v2));
 812 }
 813
 814 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
 815 {
 816         switch (msg->lm_magic) {
 817         case LUSTRE_MSG_MAGIC_V1:
 818         case LUSTRE_MSG_MAGIC_V1_SWABBED:
 819                 return 0;
 820         case LUSTRE_MSG_MAGIC_V2:
 821                 /* already in host endian */
 822                 return msg->lm_flags;
 823         default:
 824                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 825                 return 0;
 826         }
 827 }
 828 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 829
 830 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 831 {
 832         switch (msg->lm_magic) {
 833         case LUSTRE_MSG_MAGIC_V1:
 834                 return;
 835         case LUSTRE_MSG_MAGIC_V2:
 836                 msg->lm_flags = flags;
 837                 return;
 838         default:
 839                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 840         }
 841 }
 842
 843 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 844 {
 845         switch (msg->lm_magic) {
 846         case LUSTRE_MSG_MAGIC_V2: {
 847                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 848                 if (!pb) {
 849                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 850                         return 0;
 851                 }
 852                 return pb->pb_flags;
 853         }
 854         default:
 855                 /* flags might be printed in debug code while message
 856                  * uninitialized */
 857                 return 0;
 858         }
 859 }
 860 EXPORT_SYMBOL(lustre_msg_get_flags);
 861
 862 void lustre_msg_add_flags(struct lustre_msg *msg, int flags)
 863 {
 864         switch (msg->lm_magic) {
 865         case LUSTRE_MSG_MAGIC_V2: {
 866                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 867                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 868                 pb->pb_flags |= flags;
 869                 return;
 870         }
 871         default:
 872                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 873         }
 874 }
 875 EXPORT_SYMBOL(lustre_msg_add_flags);
 876
 877 void lustre_msg_set_flags(struct lustre_msg *msg, int flags)
 878 {
 879         switch (msg->lm_magic) {
 880         case LUSTRE_MSG_MAGIC_V2: {
 881                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 882                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 883                 pb->pb_flags = flags;
 884                 return;
 885         }
 886         default:
 887                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 888         }
 889 }
 890 EXPORT_SYMBOL(lustre_msg_set_flags);
 891
 892 void lustre_msg_clear_flags(struct lustre_msg *msg, int flags)
 893 {
 894         switch (msg->lm_magic) {
 895         case LUSTRE_MSG_MAGIC_V2: {
 896                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 897                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 898                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
 899                 return;
 900         }
 901         default:
 902                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 903         }
 904 }
 905 EXPORT_SYMBOL(lustre_msg_clear_flags);
 906
 907 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 908 {
 909         switch (msg->lm_magic) {
 910         case LUSTRE_MSG_MAGIC_V2: {
 911                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 912                 if (!pb) {
 913                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 914                         return 0;
 915                 }
 916                 return pb->pb_op_flags;
 917         }
 918         default:
 919                 return 0;
 920         }
 921 }
 922 EXPORT_SYMBOL(lustre_msg_get_op_flags);
 923
 924 void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags)
 925 {
 926         switch (msg->lm_magic) {
 927         case LUSTRE_MSG_MAGIC_V2: {
 928                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 929                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 930                 pb->pb_op_flags |= flags;
 931                 return;
 932         }
 933         default:
 934                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 935         }
 936 }
 937 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 938
 939 void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags)
 940 {
 941         switch (msg->lm_magic) {
 942         case LUSTRE_MSG_MAGIC_V2: {
 943                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 944                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 945                 pb->pb_op_flags |= flags;
 946                 return;
 947         }
 948         default:
 949                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 950         }
 951 }
 952 EXPORT_SYMBOL(lustre_msg_set_op_flags);
 953
 954 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 955 {
 956         switch (msg->lm_magic) {
 957         case LUSTRE_MSG_MAGIC_V2: {
 958                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 959                 if (!pb) {
 960                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 961                         return NULL;
 962                 }
 963                 return &pb->pb_handle;
 964         }
 965         default:
 966                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 967                 return NULL;
 968         }
 969 }
 970 EXPORT_SYMBOL(lustre_msg_get_handle);
 971
 972 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 973 {
 974         switch (msg->lm_magic) {
 975         case LUSTRE_MSG_MAGIC_V2: {
 976                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 977                 if (!pb) {
 978                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 979                         return PTL_RPC_MSG_ERR;
 980                 }
 981                 return pb->pb_type;
 982         }
 983         default:
 984                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 985                 return PTL_RPC_MSG_ERR;
 986         }
 987 }
 988 EXPORT_SYMBOL(lustre_msg_get_type);
 989
 990 __u32 lustre_msg_get_version(struct lustre_msg *msg)
 991 {
 992         switch (msg->lm_magic) {
 993         case LUSTRE_MSG_MAGIC_V2: {
 994                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 995                 if (!pb) {
 996                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 997                         return 0;
 998                 }
 999                 return pb->pb_version;
1000         }
1001         default:
1002                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1003                 return 0;
1004         }
1005 }
1006 EXPORT_SYMBOL(lustre_msg_get_version);
1007
1008 void lustre_msg_add_version(struct lustre_msg *msg, int version)
1009 {
1010         switch (msg->lm_magic) {
1011         case LUSTRE_MSG_MAGIC_V2: {
1012                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1013                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1014                 pb->pb_version |= version;
1015                 return;
1016         }
1017         default:
1018                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1019         }
1020 }
1021 EXPORT_SYMBOL(lustre_msg_add_version);
1022
1023 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1024 {
1025         switch (msg->lm_magic) {
1026         case LUSTRE_MSG_MAGIC_V2: {
1027                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1028                 if (!pb) {
1029                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1030                         return 0;
1031                 }
1032                 return pb->pb_opc;
1033         }
1034         default:
1035                 CERROR("incorrect message magic: %08x(msg:%p)\n", msg->lm_magic, msg);
1036                 LBUG();
1037                 return 0;
1038         }
1039 }
1040 EXPORT_SYMBOL(lustre_msg_get_opc);
1041
1042 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1043 {
1044         switch (msg->lm_magic) {
1045         case LUSTRE_MSG_MAGIC_V2: {
1046                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1047                 if (!pb) {
1048                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1049                         return 0;
1050                 }
1051                 return pb->pb_last_xid;
1052         }
1053         default:
1054                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1055                 return 0;
1056         }
1057 }
1058 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1059
1060 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1061 {
1062         switch (msg->lm_magic) {
1063         case LUSTRE_MSG_MAGIC_V2: {
1064                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1065                 if (!pb) {
1066                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1067                         return 0;
1068                 }
1069                 return pb->pb_last_committed;
1070         }
1071         default:
1072                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1073                 return 0;
1074         }
1075 }
1076 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1077
1078 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1079 {
1080         switch (msg->lm_magic) {
1081         case LUSTRE_MSG_MAGIC_V1:
1082                 return NULL;
1083         case LUSTRE_MSG_MAGIC_V2: {
1084                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1085                 if (!pb) {
1086                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1087                         return NULL;
1088                 }
1089                 return pb->pb_pre_versions;
1090         }
1091         default:
1092                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1093                 return NULL;
1094         }
1095 }
1096 EXPORT_SYMBOL(lustre_msg_get_versions);
1097
1098 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1099 {
1100         switch (msg->lm_magic) {
1101         case LUSTRE_MSG_MAGIC_V2: {
1102                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1103                 if (!pb) {
1104                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1105                         return 0;
1106                 }
1107                 return pb->pb_transno;
1108         }
1109         default:
1110                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1111                 return 0;
1112         }
1113 }
1114 EXPORT_SYMBOL(lustre_msg_get_transno);
1115
1116 int lustre_msg_get_status(struct lustre_msg *msg)
1117 {
1118         switch (msg->lm_magic) {
1119         case LUSTRE_MSG_MAGIC_V2: {
1120                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1121                 if (!pb) {
1122                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1123                         return -EINVAL;
1124                 }
1125                 return pb->pb_status;
1126         }
1127         default:
1128                 /* status might be printed in debug code while message
1129                  * uninitialized */
1130                 return -EINVAL;
1131         }
1132 }
1133 EXPORT_SYMBOL(lustre_msg_get_status);
1134
1135 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1136 {
1137         switch (msg->lm_magic) {
1138         case LUSTRE_MSG_MAGIC_V2: {
1139                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1140                 if (!pb) {
1141                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1142                         return -EINVAL;
1143                 }
1144                 return pb->pb_slv;
1145         }
1146         default:
1147                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1148                 return -EINVAL;
1149         }
1150 }
1151 EXPORT_SYMBOL(lustre_msg_get_slv);
1152
1153
1154 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1155 {
1156         switch (msg->lm_magic) {
1157         case LUSTRE_MSG_MAGIC_V2: {
1158                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1159                 if (!pb) {
1160                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1161                         return;
1162                 }
1163                 pb->pb_slv = slv;
1164                 return;
1165         }
1166         default:
1167                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1168                 return;
1169         }
1170 }
1171 EXPORT_SYMBOL(lustre_msg_set_slv);
1172
1173 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1174 {
1175         switch (msg->lm_magic) {
1176         case LUSTRE_MSG_MAGIC_V2: {
1177                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1178                 if (!pb) {
1179                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1180                         return -EINVAL;
1181                 }
1182                 return pb->pb_limit;
1183         }
1184         default:
1185                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1186                 return -EINVAL;
1187         }
1188 }
1189 EXPORT_SYMBOL(lustre_msg_get_limit);
1190
1191
1192 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1193 {
1194         switch (msg->lm_magic) {
1195         case LUSTRE_MSG_MAGIC_V2: {
1196                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1197                 if (!pb) {
1198                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1199                         return;
1200                 }
1201                 pb->pb_limit = limit;
1202                 return;
1203         }
1204         default:
1205                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1206                 return;
1207         }
1208 }
1209 EXPORT_SYMBOL(lustre_msg_set_limit);
1210
1211 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1212 {
1213         switch (msg->lm_magic) {
1214         case LUSTRE_MSG_MAGIC_V2: {
1215                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1216                 if (!pb) {
1217                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1218                         return 0;
1219                 }
1220                 return pb->pb_conn_cnt;
1221         }
1222         default:
1223                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1224                 return 0;
1225         }
1226 }
1227 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1228
1229 int lustre_msg_is_v1(struct lustre_msg *msg)
1230 {
1231         switch (msg->lm_magic) {
1232         case LUSTRE_MSG_MAGIC_V1:
1233         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1234                 return 1;
1235         default:
1236                 return 0;
1237         }
1238 }
1239 EXPORT_SYMBOL(lustre_msg_is_v1);
1240
1241 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1242 {
1243         switch (msg->lm_magic) {
1244         case LUSTRE_MSG_MAGIC_V2:
1245                 return msg->lm_magic;
1246         default:
1247                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1248                 return 0;
1249         }
1250 }
1251 EXPORT_SYMBOL(lustre_msg_get_magic);
1252
1253 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1254 {
1255         switch (msg->lm_magic) {
1256         case LUSTRE_MSG_MAGIC_V1:
1257         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1258                 return 0;
1259         case LUSTRE_MSG_MAGIC_V2: {
1260                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1261                 if (!pb) {
1262                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1263                         return 0;
1264
1265                 }
1266                 return pb->pb_timeout;
1267         }
1268         default:
1269                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1270                 return 0;
1271         }
1272 }
1273
1274 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1275 {
1276         switch (msg->lm_magic) {
1277         case LUSTRE_MSG_MAGIC_V1:
1278         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1279                 return 0;
1280         case LUSTRE_MSG_MAGIC_V2: {
1281                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1282                 if (!pb) {
1283                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1284                         return 0;
1285
1286                 }
1287                 return pb->pb_service_time;
1288         }
1289         default:
1290                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1291                 return 0;
1292         }
1293 }
1294
1295 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1296 {
1297         switch (msg->lm_magic) {
1298         case LUSTRE_MSG_MAGIC_V1:
1299         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1300                 return NULL;
1301         case LUSTRE_MSG_MAGIC_V2: {
1302                 struct ptlrpc_body *pb =
1303                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1304                                           sizeof(struct ptlrpc_body));
1305                 if (!pb)
1306                         return NULL;
1307
1308                 return pb->pb_jobid;
1309         }
1310         default:
1311                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1312                 return NULL;
1313         }
1314 }
1315 EXPORT_SYMBOL(lustre_msg_get_jobid);
1316
1317 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1318 {
1319         switch (msg->lm_magic) {
1320         case LUSTRE_MSG_MAGIC_V2:
1321                 return msg->lm_cksum;
1322         default:
1323                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1324                 return 0;
1325         }
1326 }
1327
1328 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1329 /*
1330  * In 1.6 and 1.8 the checksum was computed only on struct ptlrpc_body as
1331  * it was in 1.6 (88 bytes, smaller than the full size in 1.8).  It makes
1332  * more sense to compute the checksum on the full ptlrpc_body, regardless
1333  * of what size it is, but in order to keep interoperability with 1.8 we
1334  * can optionally also checksum only the first 88 bytes (caller decides). */
1335 # define ptlrpc_body_cksum_size_compat18         88
1336
1337 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg, int compat18)
1338 #else
1339 # warning "remove checksum compatibility support for b1_8"
1340 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1341 #endif
1342 {
1343         switch (msg->lm_magic) {
1344         case LUSTRE_MSG_MAGIC_V2: {
1345                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1346 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1347                 __u32 crc;
1348                 unsigned int hsize = 4;
1349                 __u32 len = compat18 ? ptlrpc_body_cksum_size_compat18 :
1350                             lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1351                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1352                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1353                                        len, NULL, 0, (unsigned char *)&crc,
1354                                        &hsize);
1355                 return crc;
1356 #else
1357 # warning "remove checksum compatibility support for b1_8"
1358                 __u32 crc;
1359                 unsigned int hsize = 4;
1360                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1361                                    lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF),
1362                                    NULL, 0, (unsigned char *)&crc, &hsize);
1363                 return crc;
1364 #endif
1365         }
1366         default:
1367                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1368                 return 0;
1369         }
1370 }
1371
1372 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1373 {
1374         switch (msg->lm_magic) {
1375         case LUSTRE_MSG_MAGIC_V2: {
1376                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1377                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1378                 pb->pb_handle = *handle;
1379                 return;
1380         }
1381         default:
1382                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1383         }
1384 }
1385 EXPORT_SYMBOL(lustre_msg_set_handle);
1386
1387 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1388 {
1389         switch (msg->lm_magic) {
1390         case LUSTRE_MSG_MAGIC_V2: {
1391                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1392                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1393                 pb->pb_type = type;
1394                 return;
1395         }
1396         default:
1397                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1398         }
1399 }
1400 EXPORT_SYMBOL(lustre_msg_set_type);
1401
1402 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1403 {
1404         switch (msg->lm_magic) {
1405         case LUSTRE_MSG_MAGIC_V2: {
1406                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1407                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1408                 pb->pb_opc = opc;
1409                 return;
1410         }
1411         default:
1412                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1413         }
1414 }
1415 EXPORT_SYMBOL(lustre_msg_set_opc);
1416
1417 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1418 {
1419         switch (msg->lm_magic) {
1420         case LUSTRE_MSG_MAGIC_V2: {
1421                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1422                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1423                 pb->pb_last_xid = last_xid;
1424                 return;
1425         }
1426         default:
1427                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1428         }
1429 }
1430 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1431
1432 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1433 {
1434         switch (msg->lm_magic) {
1435         case LUSTRE_MSG_MAGIC_V2: {
1436                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1437                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1438                 pb->pb_last_committed = last_committed;
1439                 return;
1440         }
1441         default:
1442                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1443         }
1444 }
1445 EXPORT_SYMBOL(lustre_msg_set_last_committed);
1446
1447 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1448 {
1449         switch (msg->lm_magic) {
1450         case LUSTRE_MSG_MAGIC_V1:
1451                 return;
1452         case LUSTRE_MSG_MAGIC_V2: {
1453                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1454                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1455                 pb->pb_pre_versions[0] = versions[0];
1456                 pb->pb_pre_versions[1] = versions[1];
1457                 pb->pb_pre_versions[2] = versions[2];
1458                 pb->pb_pre_versions[3] = versions[3];
1459                 return;
1460         }
1461         default:
1462                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1463         }
1464 }
1465 EXPORT_SYMBOL(lustre_msg_set_versions);
1466
1467 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1468 {
1469         switch (msg->lm_magic) {
1470         case LUSTRE_MSG_MAGIC_V2: {
1471                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1472                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1473                 pb->pb_transno = transno;
1474                 return;
1475         }
1476         default:
1477                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1478         }
1479 }
1480 EXPORT_SYMBOL(lustre_msg_set_transno);
1481
1482 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1483 {
1484         switch (msg->lm_magic) {
1485         case LUSTRE_MSG_MAGIC_V2: {
1486                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1487                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1488                 pb->pb_status = status;
1489                 return;
1490         }
1491         default:
1492                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1493         }
1494 }
1495 EXPORT_SYMBOL(lustre_msg_set_status);
1496
1497 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1498 {
1499         switch (msg->lm_magic) {
1500         case LUSTRE_MSG_MAGIC_V2: {
1501                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1502                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1503                 pb->pb_conn_cnt = conn_cnt;
1504                 return;
1505         }
1506         default:
1507                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1508         }
1509 }
1510 EXPORT_SYMBOL(lustre_msg_set_conn_cnt);
1511
1512 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1513 {
1514         switch (msg->lm_magic) {
1515         case LUSTRE_MSG_MAGIC_V1:
1516                 return;
1517         case LUSTRE_MSG_MAGIC_V2: {
1518                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1519                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1520                 pb->pb_timeout = timeout;
1521                 return;
1522         }
1523         default:
1524                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1525         }
1526 }
1527
1528 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1529 {
1530         switch (msg->lm_magic) {
1531         case LUSTRE_MSG_MAGIC_V1:
1532                 return;
1533         case LUSTRE_MSG_MAGIC_V2: {
1534                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1535                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1536                 pb->pb_service_time = service_time;
1537                 return;
1538         }
1539         default:
1540                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1541         }
1542 }
1543
1544 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1545 {
1546         switch (msg->lm_magic) {
1547         case LUSTRE_MSG_MAGIC_V1:
1548                 return;
1549         case LUSTRE_MSG_MAGIC_V2: {
1550                 __u32 opc = lustre_msg_get_opc(msg);
1551                 struct ptlrpc_body *pb;
1552
1553                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1554                  * See the comment in ptlrpc_request_pack(). */
1555                 if (!opc || opc == LDLM_BL_CALLBACK ||
1556                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1557                         return;
1558
1559                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1560                                        sizeof(struct ptlrpc_body));
1561                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1562
1563                 if (jobid != NULL)
1564                         memcpy(pb->pb_jobid, jobid, JOBSTATS_JOBID_SIZE);
1565                 else if (pb->pb_jobid[0] == '\0')
1566                         lustre_get_jobid(pb->pb_jobid);
1567                 return;
1568         }
1569         default:
1570                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1571         }
1572 }
1573 EXPORT_SYMBOL(lustre_msg_set_jobid);
1574
1575 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1576 {
1577         switch (msg->lm_magic) {
1578         case LUSTRE_MSG_MAGIC_V1:
1579                 return;
1580         case LUSTRE_MSG_MAGIC_V2:
1581                 msg->lm_cksum = cksum;
1582                 return;
1583         default:
1584                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1585         }
1586 }
1587
1588
1589 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1590 {
1591         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1592
1593         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1594                                          req->rq_pill.rc_area[RCL_SERVER]);
1595         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1596                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1597 }
1598 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1599
1600 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1601 {
1602         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1603         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1604                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1605 }
1606 EXPORT_SYMBOL(ptlrpc_req_set_repsize);
1607
1608 /**
1609  * Send a remote set_info_async.
1610  *
1611  * This may go from client to server or server to client.
1612  */
1613 int do_set_info_async(struct obd_import *imp,
1614                       int opcode, int version,
1615                       obd_count keylen, void *key,
1616                       obd_count vallen, void *val,
1617                       struct ptlrpc_request_set *set)
1618 {
1619         struct ptlrpc_request *req;
1620         char                  *tmp;
1621         int                    rc;
1622         ENTRY;
1623
1624         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1625         if (req == NULL)
1626                 RETURN(-ENOMEM);
1627
1628         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1629                              RCL_CLIENT, keylen);
1630         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1631                              RCL_CLIENT, vallen);
1632         rc = ptlrpc_request_pack(req, version, opcode);
1633         if (rc) {
1634                 ptlrpc_request_free(req);
1635                 RETURN(rc);
1636         }
1637
1638         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1639         memcpy(tmp, key, keylen);
1640         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1641         memcpy(tmp, val, vallen);
1642
1643         ptlrpc_request_set_replen(req);
1644
1645         if (set) {
1646                 ptlrpc_set_add_req(set, req);
1647                 ptlrpc_check_set(NULL, set);
1648         } else {
1649                 rc = ptlrpc_queue_wait(req);
1650                 ptlrpc_req_finished(req);
1651         }
1652
1653         RETURN(rc);
1654 }
1655 EXPORT_SYMBOL(do_set_info_async);
1656
1657 /* byte flipping routines for all wire types declared in
1658  * lustre_idl.h implemented here.
1659  */
1660 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1661 {
1662         __swab32s (&b->pb_type);
1663         __swab32s (&b->pb_version);
1664         __swab32s (&b->pb_opc);
1665         __swab32s (&b->pb_status);
1666         __swab64s (&b->pb_last_xid);
1667         __swab64s (&b->pb_last_seen);
1668         __swab64s (&b->pb_last_committed);
1669         __swab64s (&b->pb_transno);
1670         __swab32s (&b->pb_flags);
1671         __swab32s (&b->pb_op_flags);
1672         __swab32s (&b->pb_conn_cnt);
1673         __swab32s (&b->pb_timeout);
1674         __swab32s (&b->pb_service_time);
1675         __swab32s (&b->pb_limit);
1676         __swab64s (&b->pb_slv);
1677         __swab64s (&b->pb_pre_versions[0]);
1678         __swab64s (&b->pb_pre_versions[1]);
1679         __swab64s (&b->pb_pre_versions[2]);
1680         __swab64s (&b->pb_pre_versions[3]);
1681         CLASSERT(offsetof(typeof(*b), pb_padding) != 0);
1682         /* While we need to maintain compatibility between
1683          * clients and servers without ptlrpc_body_v2 (< 2.3)
1684          * do not swab any fields beyond pb_jobid, as we are
1685          * using this swab function for both ptlrpc_body
1686          * and ptlrpc_body_v2. */
1687         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1688 }
1689 EXPORT_SYMBOL(lustre_swab_ptlrpc_body);
1690
1691 void lustre_swab_connect(struct obd_connect_data *ocd)
1692 {
1693         __swab64s(&ocd->ocd_connect_flags);
1694         __swab32s(&ocd->ocd_version);
1695         __swab32s(&ocd->ocd_grant);
1696         __swab64s(&ocd->ocd_ibits_known);
1697         __swab32s(&ocd->ocd_index);
1698         __swab32s(&ocd->ocd_brw_size);
1699         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1700          * they are 8-byte values */
1701         __swab16s(&ocd->ocd_grant_extent);
1702         __swab32s(&ocd->ocd_unused);
1703         __swab64s(&ocd->ocd_transno);
1704         __swab32s(&ocd->ocd_group);
1705         __swab32s(&ocd->ocd_cksum_types);
1706         __swab32s(&ocd->ocd_instance);
1707         /* Fields after ocd_cksum_types are only accessible by the receiver
1708          * if the corresponding flag in ocd_connect_flags is set. Accessing
1709          * any field after ocd_maxbytes on the receiver without a valid flag
1710          * may result in out-of-bound memory access and kernel oops. */
1711         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1712                 __swab32s(&ocd->ocd_max_easize);
1713         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1714                 __swab64s(&ocd->ocd_maxbytes);
1715         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1716         CLASSERT(offsetof(typeof(*ocd), padding2) != 0);
1717         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1718         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1719         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1720         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1721         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1722         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1723         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1724         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1725         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1726         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1727         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1728         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1729         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1730 }
1731
1732 void lustre_swab_obdo (struct obdo  *o)
1733 {
1734         __swab64s (&o->o_valid);
1735         lustre_swab_ost_id(&o->o_oi);
1736         __swab64s (&o->o_parent_seq);
1737         __swab64s (&o->o_size);
1738         __swab64s (&o->o_mtime);
1739         __swab64s (&o->o_atime);
1740         __swab64s (&o->o_ctime);
1741         __swab64s (&o->o_blocks);
1742         __swab64s (&o->o_grant);
1743         __swab32s (&o->o_blksize);
1744         __swab32s (&o->o_mode);
1745         __swab32s (&o->o_uid);
1746         __swab32s (&o->o_gid);
1747         __swab32s (&o->o_flags);
1748         __swab32s (&o->o_nlink);
1749         __swab32s (&o->o_parent_oid);
1750         __swab32s (&o->o_misc);
1751         __swab64s (&o->o_ioepoch);
1752         __swab32s (&o->o_stripe_idx);
1753         __swab32s (&o->o_parent_ver);
1754         /* o_handle is opaque */
1755         /* o_lcookie is swabbed elsewhere */
1756         __swab32s (&o->o_uid_h);
1757         __swab32s (&o->o_gid_h);
1758         __swab64s (&o->o_data_version);
1759         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1760         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1761         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1762
1763 }
1764 EXPORT_SYMBOL(lustre_swab_obdo);
1765
1766 void lustre_swab_obd_statfs (struct obd_statfs *os)
1767 {
1768         __swab64s (&os->os_type);
1769         __swab64s (&os->os_blocks);
1770         __swab64s (&os->os_bfree);
1771         __swab64s (&os->os_bavail);
1772         __swab64s (&os->os_files);
1773         __swab64s (&os->os_ffree);
1774         /* no need to swab os_fsid */
1775         __swab32s (&os->os_bsize);
1776         __swab32s (&os->os_namelen);
1777         __swab64s (&os->os_maxbytes);
1778         __swab32s (&os->os_state);
1779         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1780         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1781         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1782         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1783         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1784         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1785         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1786         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1787         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1788 }
1789 EXPORT_SYMBOL(lustre_swab_obd_statfs);
1790
1791 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1792 {
1793         lustre_swab_ost_id(&ioo->ioo_oid);
1794         __swab32s(&ioo->ioo_max_brw);
1795         __swab32s(&ioo->ioo_bufcnt);
1796 }
1797 EXPORT_SYMBOL(lustre_swab_obd_ioobj);
1798
1799 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1800 {
1801         __swab64s(&nbr->rnb_offset);
1802         __swab32s(&nbr->rnb_len);
1803         __swab32s(&nbr->rnb_flags);
1804 }
1805 EXPORT_SYMBOL(lustre_swab_niobuf_remote);
1806
1807 void lustre_swab_ost_body (struct ost_body *b)
1808 {
1809         lustre_swab_obdo (&b->oa);
1810 }
1811 EXPORT_SYMBOL(lustre_swab_ost_body);
1812
1813 void lustre_swab_ost_last_id(obd_id *id)
1814 {
1815         __swab64s(id);
1816 }
1817 EXPORT_SYMBOL(lustre_swab_ost_last_id);
1818
1819 void lustre_swab_generic_32s(__u32 *val)
1820 {
1821         __swab32s(val);
1822 }
1823 EXPORT_SYMBOL(lustre_swab_generic_32s);
1824
1825 void lustre_swab_gl_desc(union ldlm_gl_desc *desc)
1826 {
1827         lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid);
1828         __swab64s(&desc->lquota_desc.gl_flags);
1829         __swab64s(&desc->lquota_desc.gl_ver);
1830         __swab64s(&desc->lquota_desc.gl_hardlimit);
1831         __swab64s(&desc->lquota_desc.gl_softlimit);
1832         __swab64s(&desc->lquota_desc.gl_time);
1833         CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0);
1834 }
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_mdt_body (struct mdt_body *b)
1871 {
1872         lustre_swab_lu_fid(&b->mbo_fid1);
1873         lustre_swab_lu_fid(&b->mbo_fid2);
1874         /* handle is opaque */
1875         __swab64s(&b->mbo_valid);
1876         __swab64s(&b->mbo_size);
1877         __swab64s(&b->mbo_mtime);
1878         __swab64s(&b->mbo_atime);
1879         __swab64s(&b->mbo_ctime);
1880         __swab64s(&b->mbo_blocks);
1881         __swab64s(&b->mbo_ioepoch);
1882         __swab64s(&b->mbo_t_state);
1883         __swab32s(&b->mbo_fsuid);
1884         __swab32s(&b->mbo_fsgid);
1885         __swab32s(&b->mbo_capability);
1886         __swab32s(&b->mbo_mode);
1887         __swab32s(&b->mbo_uid);
1888         __swab32s(&b->mbo_gid);
1889         __swab32s(&b->mbo_flags);
1890         __swab32s(&b->mbo_rdev);
1891         __swab32s(&b->mbo_nlink);
1892         CLASSERT(offsetof(typeof(*b), mbo_unused2) != 0);
1893         __swab32s(&b->mbo_suppgid);
1894         __swab32s(&b->mbo_eadatasize);
1895         __swab32s(&b->mbo_aclsize);
1896         __swab32s(&b->mbo_max_mdsize);
1897         __swab32s(&b->mbo_max_cookiesize);
1898         __swab32s(&b->mbo_uid_h);
1899         __swab32s(&b->mbo_gid_h);
1900         CLASSERT(offsetof(typeof(*b), mbo_padding_5) != 0);
1901 }
1902 EXPORT_SYMBOL(lustre_swab_mdt_body);
1903
1904 void lustre_swab_mdt_ioepoch (struct mdt_ioepoch *b)
1905 {
1906         /* handle is opaque */
1907          __swab64s (&b->ioepoch);
1908          __swab32s (&b->flags);
1909          CLASSERT(offsetof(typeof(*b), padding) != 0);
1910 }
1911 EXPORT_SYMBOL(lustre_swab_mdt_ioepoch);
1912
1913 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1914 {
1915         int i;
1916         __swab32s(&mti->mti_lustre_ver);
1917         __swab32s(&mti->mti_stripe_index);
1918         __swab32s(&mti->mti_config_ver);
1919         __swab32s(&mti->mti_flags);
1920         __swab32s(&mti->mti_instance);
1921         __swab32s(&mti->mti_nid_count);
1922         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1923         for (i = 0; i < MTI_NIDS_MAX; i++)
1924                 __swab64s(&mti->mti_nids[i]);
1925 }
1926 EXPORT_SYMBOL(lustre_swab_mgs_target_info);
1927
1928 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1929 {
1930         __u8 i;
1931
1932         __swab64s(&entry->mne_version);
1933         __swab32s(&entry->mne_instance);
1934         __swab32s(&entry->mne_index);
1935         __swab32s(&entry->mne_length);
1936
1937         /* mne_nid_(count|type) must be one byte size because we're gonna
1938          * access it w/o swapping. */
1939         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1940         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1941
1942         /* remove this assertion if ipv6 is supported. */
1943         LASSERT(entry->mne_nid_type == 0);
1944         for (i = 0; i < entry->mne_nid_count; i++) {
1945                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1946                 __swab64s(&entry->u.nids[i]);
1947         }
1948 }
1949 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1950
1951 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1952 {
1953         __swab64s(&body->mcb_offset);
1954         __swab32s(&body->mcb_units);
1955         __swab16s(&body->mcb_type);
1956 }
1957 EXPORT_SYMBOL(lustre_swab_mgs_config_body);
1958
1959 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1960 {
1961         __swab64s(&body->mcr_offset);
1962         __swab64s(&body->mcr_size);
1963 }
1964 EXPORT_SYMBOL(lustre_swab_mgs_config_res);
1965
1966 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1967 {
1968         __swab64s (&i->dqi_bgrace);
1969         __swab64s (&i->dqi_igrace);
1970         __swab32s (&i->dqi_flags);
1971         __swab32s (&i->dqi_valid);
1972 }
1973
1974 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1975 {
1976         __swab64s (&b->dqb_ihardlimit);
1977         __swab64s (&b->dqb_isoftlimit);
1978         __swab64s (&b->dqb_curinodes);
1979         __swab64s (&b->dqb_bhardlimit);
1980         __swab64s (&b->dqb_bsoftlimit);
1981         __swab64s (&b->dqb_curspace);
1982         __swab64s (&b->dqb_btime);
1983         __swab64s (&b->dqb_itime);
1984         __swab32s (&b->dqb_valid);
1985         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1986 }
1987
1988 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1989 {
1990         __swab32s (&q->qc_cmd);
1991         __swab32s (&q->qc_type);
1992         __swab32s (&q->qc_id);
1993         __swab32s (&q->qc_stat);
1994         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1995         lustre_swab_obd_dqblk (&q->qc_dqblk);
1996 }
1997 EXPORT_SYMBOL(lustre_swab_obd_quotactl);
1998
1999 void lustre_swab_mdt_remote_perm (struct mdt_remote_perm *p)
2000 {
2001         __swab32s (&p->rp_uid);
2002         __swab32s (&p->rp_gid);
2003         __swab32s (&p->rp_fsuid);
2004         __swab32s (&p->rp_fsuid_h);
2005         __swab32s (&p->rp_fsgid);
2006         __swab32s (&p->rp_fsgid_h);
2007         __swab32s (&p->rp_access_perm);
2008         __swab32s (&p->rp_padding);
2009 };
2010 EXPORT_SYMBOL(lustre_swab_mdt_remote_perm);
2011
2012 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2013 {
2014         lustre_swab_lu_fid(&gf->gf_fid);
2015         __swab64s(&gf->gf_recno);
2016         __swab32s(&gf->gf_linkno);
2017         __swab32s(&gf->gf_pathlen);
2018 }
2019 EXPORT_SYMBOL(lustre_swab_fid2path);
2020
2021 void lustre_swab_fiemap_extent(struct ll_fiemap_extent *fm_extent)
2022 {
2023         __swab64s(&fm_extent->fe_logical);
2024         __swab64s(&fm_extent->fe_physical);
2025         __swab64s(&fm_extent->fe_length);
2026         __swab32s(&fm_extent->fe_flags);
2027         __swab32s(&fm_extent->fe_device);
2028 }
2029
2030 void lustre_swab_fiemap(struct ll_user_fiemap *fiemap)
2031 {
2032         __u32 i;
2033
2034         __swab64s(&fiemap->fm_start);
2035         __swab64s(&fiemap->fm_length);
2036         __swab32s(&fiemap->fm_flags);
2037         __swab32s(&fiemap->fm_mapped_extents);
2038         __swab32s(&fiemap->fm_extent_count);
2039         __swab32s(&fiemap->fm_reserved);
2040
2041         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2042                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2043 }
2044 EXPORT_SYMBOL(lustre_swab_fiemap);
2045
2046 void lustre_swab_idx_info(struct idx_info *ii)
2047 {
2048         __swab32s(&ii->ii_magic);
2049         __swab32s(&ii->ii_flags);
2050         __swab16s(&ii->ii_count);
2051         __swab32s(&ii->ii_attrs);
2052         lustre_swab_lu_fid(&ii->ii_fid);
2053         __swab64s(&ii->ii_version);
2054         __swab64s(&ii->ii_hash_start);
2055         __swab64s(&ii->ii_hash_end);
2056         __swab16s(&ii->ii_keysize);
2057         __swab16s(&ii->ii_recsize);
2058 }
2059
2060 void lustre_swab_lip_header(struct lu_idxpage *lip)
2061 {
2062         /* swab header */
2063         __swab32s(&lip->lip_magic);
2064         __swab16s(&lip->lip_flags);
2065         __swab16s(&lip->lip_nr);
2066 }
2067 EXPORT_SYMBOL(lustre_swab_lip_header);
2068
2069 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2070 {
2071         __swab32s(&rr->rr_opcode);
2072         __swab32s(&rr->rr_cap);
2073         __swab32s(&rr->rr_fsuid);
2074         /* rr_fsuid_h is unused */
2075         __swab32s(&rr->rr_fsgid);
2076         /* rr_fsgid_h is unused */
2077         __swab32s(&rr->rr_suppgid1);
2078         /* rr_suppgid1_h is unused */
2079         __swab32s(&rr->rr_suppgid2);
2080         /* rr_suppgid2_h is unused */
2081         lustre_swab_lu_fid(&rr->rr_fid1);
2082         lustre_swab_lu_fid(&rr->rr_fid2);
2083         __swab64s(&rr->rr_mtime);
2084         __swab64s(&rr->rr_atime);
2085         __swab64s(&rr->rr_ctime);
2086         __swab64s(&rr->rr_size);
2087         __swab64s(&rr->rr_blocks);
2088         __swab32s(&rr->rr_bias);
2089         __swab32s(&rr->rr_mode);
2090         __swab32s(&rr->rr_flags);
2091         __swab32s(&rr->rr_flags_h);
2092         __swab32s(&rr->rr_umask);
2093
2094         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2095 };
2096 EXPORT_SYMBOL(lustre_swab_mdt_rec_reint);
2097
2098 void lustre_swab_lov_desc (struct lov_desc *ld)
2099 {
2100         __swab32s (&ld->ld_tgt_count);
2101         __swab32s (&ld->ld_active_tgt_count);
2102         __swab32s (&ld->ld_default_stripe_count);
2103         __swab32s (&ld->ld_pattern);
2104         __swab64s (&ld->ld_default_stripe_size);
2105         __swab64s (&ld->ld_default_stripe_offset);
2106         __swab32s (&ld->ld_qos_maxage);
2107         /* uuid endian insensitive */
2108 }
2109 EXPORT_SYMBOL(lustre_swab_lov_desc);
2110
2111 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2112 {
2113         __swab32s (&ld->ld_tgt_count);
2114         __swab32s (&ld->ld_active_tgt_count);
2115         __swab32s (&ld->ld_default_stripe_count);
2116         __swab32s (&ld->ld_pattern);
2117         __swab64s (&ld->ld_default_hash_size);
2118         __swab32s (&ld->ld_qos_maxage);
2119         /* uuid endian insensitive */
2120 }
2121
2122 /* This structure is always in little-endian */
2123 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2124 {
2125         int i;
2126
2127         __swab32s(&lmm1->lmv_magic);
2128         __swab32s(&lmm1->lmv_stripe_count);
2129         __swab32s(&lmm1->lmv_master_mdt_index);
2130         __swab32s(&lmm1->lmv_hash_type);
2131         __swab32s(&lmm1->lmv_layout_version);
2132         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2133                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2134 }
2135
2136 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2137 {
2138         switch (lmm->lmv_magic) {
2139         case LMV_MAGIC_V1:
2140                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2141                 break;
2142         default:
2143                 break;
2144         }
2145 }
2146 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2147
2148 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2149 {
2150         __swab32s(&lum->lum_magic);
2151         __swab32s(&lum->lum_stripe_count);
2152         __swab32s(&lum->lum_stripe_offset);
2153         __swab32s(&lum->lum_hash_type);
2154         __swab32s(&lum->lum_type);
2155         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2156 }
2157 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2158
2159 static void print_lum (struct lov_user_md *lum)
2160 {
2161         CDEBUG(D_OTHER, "lov_user_md %p:\n", lum);
2162         CDEBUG(D_OTHER, "\tlmm_magic: %#x\n", lum->lmm_magic);
2163         CDEBUG(D_OTHER, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2164         CDEBUG(D_OTHER, "\tlmm_object_id: "LPU64"\n", lmm_oi_id(&lum->lmm_oi));
2165         CDEBUG(D_OTHER, "\tlmm_object_gr: "LPU64"\n", lmm_oi_seq(&lum->lmm_oi));
2166         CDEBUG(D_OTHER, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2167         CDEBUG(D_OTHER, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2168         CDEBUG(D_OTHER, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2169                         lum->lmm_stripe_offset);
2170 }
2171
2172 static void lustre_swab_lmm_oi(struct ost_id *oi)
2173 {
2174         __swab64s(&oi->oi.oi_id);
2175         __swab64s(&oi->oi.oi_seq);
2176 }
2177
2178 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2179 {
2180         ENTRY;
2181         __swab32s(&lum->lmm_magic);
2182         __swab32s(&lum->lmm_pattern);
2183         lustre_swab_lmm_oi(&lum->lmm_oi);
2184         __swab32s(&lum->lmm_stripe_size);
2185         __swab16s(&lum->lmm_stripe_count);
2186         __swab16s(&lum->lmm_stripe_offset);
2187         print_lum(lum);
2188         EXIT;
2189 }
2190
2191 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2192 {
2193         ENTRY;
2194         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2195         lustre_swab_lov_user_md_common(lum);
2196         EXIT;
2197 }
2198 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2199
2200 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2201 {
2202         ENTRY;
2203         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2204         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2205         /* lmm_pool_name nothing to do with char */
2206         EXIT;
2207 }
2208 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2209
2210 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2211 {
2212         ENTRY;
2213         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2214         __swab32s(&lmm->lmm_magic);
2215         __swab32s(&lmm->lmm_pattern);
2216         lustre_swab_lmm_oi(&lmm->lmm_oi);
2217         __swab32s(&lmm->lmm_stripe_size);
2218         __swab16s(&lmm->lmm_stripe_count);
2219         __swab16s(&lmm->lmm_layout_gen);
2220         EXIT;
2221 }
2222 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2223
2224 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2225                                      int stripe_count)
2226 {
2227         int i;
2228         ENTRY;
2229         for (i = 0; i < stripe_count; i++) {
2230                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2231                 __swab32s(&(lod[i].l_ost_gen));
2232                 __swab32s(&(lod[i].l_ost_idx));
2233         }
2234         EXIT;
2235 }
2236 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2237
2238 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2239 {
2240         int  i;
2241
2242         for (i = 0; i < RES_NAME_SIZE; i++)
2243                 __swab64s (&id->name[i]);
2244 }
2245 EXPORT_SYMBOL(lustre_swab_ldlm_res_id);
2246
2247 void lustre_swab_ldlm_policy_data (ldlm_wire_policy_data_t *d)
2248 {
2249         /* the lock data is a union and the first two fields are always an
2250          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2251          * data the same way. */
2252         __swab64s(&d->l_extent.start);
2253         __swab64s(&d->l_extent.end);
2254         __swab64s(&d->l_extent.gid);
2255         __swab64s(&d->l_flock.lfw_owner);
2256         __swab32s(&d->l_flock.lfw_pid);
2257 }
2258 EXPORT_SYMBOL(lustre_swab_ldlm_policy_data);
2259
2260 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2261 {
2262         __swab64s (&i->opc);
2263 }
2264 EXPORT_SYMBOL(lustre_swab_ldlm_intent);
2265
2266 void lustre_swab_ldlm_resource_desc (struct ldlm_resource_desc *r)
2267 {
2268         __swab32s (&r->lr_type);
2269         CLASSERT(offsetof(typeof(*r), lr_padding) != 0);
2270         lustre_swab_ldlm_res_id (&r->lr_name);
2271 }
2272 EXPORT_SYMBOL(lustre_swab_ldlm_resource_desc);
2273
2274 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2275 {
2276         lustre_swab_ldlm_resource_desc (&l->l_resource);
2277         __swab32s (&l->l_req_mode);
2278         __swab32s (&l->l_granted_mode);
2279         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2280 }
2281 EXPORT_SYMBOL(lustre_swab_ldlm_lock_desc);
2282
2283 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2284 {
2285         __swab32s (&rq->lock_flags);
2286         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2287         __swab32s (&rq->lock_count);
2288         /* lock_handle[] opaque */
2289 }
2290 EXPORT_SYMBOL(lustre_swab_ldlm_request);
2291
2292 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2293 {
2294         __swab32s (&r->lock_flags);
2295         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2296         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2297         /* lock_handle opaque */
2298         __swab64s (&r->lock_policy_res1);
2299         __swab64s (&r->lock_policy_res2);
2300 }
2301 EXPORT_SYMBOL(lustre_swab_ldlm_reply);
2302
2303 void lustre_swab_quota_body(struct quota_body *b)
2304 {
2305         lustre_swab_lu_fid(&b->qb_fid);
2306         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2307         __swab32s(&b->qb_flags);
2308         __swab64s(&b->qb_count);
2309         __swab64s(&b->qb_usage);
2310         __swab64s(&b->qb_slv_ver);
2311 }
2312
2313 /* Dump functions */
2314 void dump_ioo(struct obd_ioobj *ioo)
2315 {
2316         CDEBUG(D_RPCTRACE,
2317                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2318                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2319                ioo->ioo_bufcnt);
2320 }
2321 EXPORT_SYMBOL(dump_ioo);
2322
2323 void dump_rniobuf(struct niobuf_remote *nb)
2324 {
2325         CDEBUG(D_RPCTRACE, "niobuf_remote: offset="LPU64", len=%d, flags=%x\n",
2326                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2327 }
2328 EXPORT_SYMBOL(dump_rniobuf);
2329
2330 void dump_obdo(struct obdo *oa)
2331 {
2332         __u32 valid = oa->o_valid;
2333
2334         CDEBUG(D_RPCTRACE, "obdo: o_valid = %08x\n", valid);
2335         if (valid & OBD_MD_FLID)
2336                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2337         if (valid & OBD_MD_FLFID)
2338                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = "LPX64"\n",
2339                        oa->o_parent_seq);
2340         if (valid & OBD_MD_FLSIZE)
2341                 CDEBUG(D_RPCTRACE, "obdo: o_size = "LPD64"\n", oa->o_size);
2342         if (valid & OBD_MD_FLMTIME)
2343                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = "LPD64"\n", oa->o_mtime);
2344         if (valid & OBD_MD_FLATIME)
2345                 CDEBUG(D_RPCTRACE, "obdo: o_atime = "LPD64"\n", oa->o_atime);
2346         if (valid & OBD_MD_FLCTIME)
2347                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = "LPD64"\n", oa->o_ctime);
2348         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2349                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = "LPD64"\n", oa->o_blocks);
2350         if (valid & OBD_MD_FLGRANT)
2351                 CDEBUG(D_RPCTRACE, "obdo: o_grant = "LPD64"\n", oa->o_grant);
2352         if (valid & OBD_MD_FLBLKSZ)
2353                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2354         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2355                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2356                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2357                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2358         if (valid & OBD_MD_FLUID)
2359                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2360         if (valid & OBD_MD_FLUID)
2361                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2362         if (valid & OBD_MD_FLGID)
2363                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2364         if (valid & OBD_MD_FLGID)
2365                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2366         if (valid & OBD_MD_FLFLAGS)
2367                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2368         if (valid & OBD_MD_FLNLINK)
2369                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2370         else if (valid & OBD_MD_FLCKSUM)
2371                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2372                        oa->o_nlink);
2373         if (valid & OBD_MD_FLGENER)
2374                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2375                        oa->o_parent_oid);
2376         if (valid & OBD_MD_FLEPOCH)
2377                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = "LPD64"\n",
2378                        oa->o_ioepoch);
2379         if (valid & OBD_MD_FLFID) {
2380                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2381                        oa->o_stripe_idx);
2382                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2383                        oa->o_parent_ver);
2384         }
2385         if (valid & OBD_MD_FLHANDLE)
2386                 CDEBUG(D_RPCTRACE, "obdo: o_handle = "LPD64"\n",
2387                        oa->o_handle.cookie);
2388         if (valid & OBD_MD_FLCOOKIE)
2389                 CDEBUG(D_RPCTRACE, "obdo: o_lcookie = "
2390                        "(llog_cookie dumping not yet implemented)\n");
2391 }
2392 EXPORT_SYMBOL(dump_obdo);
2393
2394 void dump_ost_body(struct ost_body *ob)
2395 {
2396         dump_obdo(&ob->oa);
2397 }
2398 EXPORT_SYMBOL(dump_ost_body);
2399
2400 void dump_rcs(__u32 *rc)
2401 {
2402         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2403 }
2404 EXPORT_SYMBOL(dump_rcs);
2405
2406 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2407 {
2408         LASSERT(req->rq_reqmsg);
2409
2410         switch (req->rq_reqmsg->lm_magic) {
2411         case LUSTRE_MSG_MAGIC_V2:
2412                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2413         default:
2414                 CERROR("bad lustre msg magic: %#08X\n",
2415                        req->rq_reqmsg->lm_magic);
2416         }
2417         return 0;
2418 }
2419
2420 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2421 {
2422         LASSERT(req->rq_repmsg);
2423
2424         switch (req->rq_repmsg->lm_magic) {
2425         case LUSTRE_MSG_MAGIC_V2:
2426                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2427         default:
2428                 /* uninitialized yet */
2429                 return 0;
2430         }
2431 }
2432
2433 void _debug_req(struct ptlrpc_request *req,
2434                 struct libcfs_debug_msg_data *msgdata,
2435                 const char *fmt, ... )
2436 {
2437         int req_ok = req->rq_reqmsg != NULL;
2438         int rep_ok = req->rq_repmsg != NULL;
2439         lnet_nid_t nid = LNET_NID_ANY;
2440         va_list args;
2441
2442         if (ptlrpc_req_need_swab(req)) {
2443                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2444                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2445         }
2446
2447         if (req->rq_import && req->rq_import->imp_connection)
2448                 nid = req->rq_import->imp_connection->c_peer.nid;
2449         else if (req->rq_export && req->rq_export->exp_connection)
2450                 nid = req->rq_export->exp_connection->c_peer.nid;
2451
2452         va_start(args, fmt);
2453         libcfs_debug_vmsg2(msgdata, fmt, args,
2454                            " req@%p x"LPU64"/t"LPD64"("LPD64") o%d->%s@%s:%d/%d"
2455                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2456                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2457                            req, req->rq_xid, req->rq_transno,
2458                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2459                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2460                            req->rq_import ?
2461                                 req->rq_import->imp_obd->obd_name :
2462                                 req->rq_export ?
2463                                         req->rq_export->exp_client_uuid.uuid :
2464                                         "<?>",
2465                            libcfs_nid2str(nid),
2466                            req->rq_request_portal, req->rq_reply_portal,
2467                            req->rq_reqlen, req->rq_replen,
2468                            req->rq_early_count, req->rq_timedout,
2469                            req->rq_deadline,
2470                            atomic_read(&req->rq_refcount),
2471                            DEBUG_REQ_FLAGS(req),
2472                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2473                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2474                            req->rq_status,
2475                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2476         va_end(args);
2477 }
2478 EXPORT_SYMBOL(_debug_req);
2479
2480 void lustre_swab_lustre_capa(struct lustre_capa *c)
2481 {
2482         lustre_swab_lu_fid(&c->lc_fid);
2483         __swab64s (&c->lc_opc);
2484         __swab64s (&c->lc_uid);
2485         __swab64s (&c->lc_gid);
2486         __swab32s (&c->lc_flags);
2487         __swab32s (&c->lc_keyid);
2488         __swab32s (&c->lc_timeout);
2489         __swab32s (&c->lc_expiry);
2490 }
2491 EXPORT_SYMBOL(lustre_swab_lustre_capa);
2492
2493 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2494 {
2495         __swab64s (&k->lk_seq);
2496         __swab32s (&k->lk_keyid);
2497         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2498 }
2499 EXPORT_SYMBOL(lustre_swab_lustre_capa_key);
2500
2501 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2502 {
2503         __swab32s(&state->hus_states);
2504         __swab32s(&state->hus_archive_id);
2505 }
2506 EXPORT_SYMBOL(lustre_swab_hsm_user_state);
2507
2508 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2509 {
2510         __swab32s(&hss->hss_valid);
2511         __swab64s(&hss->hss_setmask);
2512         __swab64s(&hss->hss_clearmask);
2513         __swab32s(&hss->hss_archive_id);
2514 }
2515 EXPORT_SYMBOL(lustre_swab_hsm_state_set);
2516
2517 void lustre_swab_hsm_extent(struct hsm_extent *extent)
2518 {
2519         __swab64s(&extent->offset);
2520         __swab64s(&extent->length);
2521 }
2522
2523 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2524 {
2525         __swab32s(&action->hca_state);
2526         __swab32s(&action->hca_action);
2527         lustre_swab_hsm_extent(&action->hca_location);
2528 }
2529 EXPORT_SYMBOL(lustre_swab_hsm_current_action);
2530
2531 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2532 {
2533         lustre_swab_lu_fid(&hui->hui_fid);
2534         lustre_swab_hsm_extent(&hui->hui_extent);
2535 }
2536 EXPORT_SYMBOL(lustre_swab_hsm_user_item);
2537
2538 void lustre_swab_layout_intent(struct layout_intent *li)
2539 {
2540         __swab32s(&li->li_opc);
2541         __swab32s(&li->li_flags);
2542         __swab64s(&li->li_start);
2543         __swab64s(&li->li_end);
2544 }
2545 EXPORT_SYMBOL(lustre_swab_layout_intent);
2546
2547 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2548 {
2549         lustre_swab_lu_fid(&hpk->hpk_fid);
2550         __swab64s(&hpk->hpk_cookie);
2551         __swab64s(&hpk->hpk_extent.offset);
2552         __swab64s(&hpk->hpk_extent.length);
2553         __swab16s(&hpk->hpk_flags);
2554         __swab16s(&hpk->hpk_errval);
2555 }
2556 EXPORT_SYMBOL(lustre_swab_hsm_progress_kernel);
2557
2558 void lustre_swab_hsm_request(struct hsm_request *hr)
2559 {
2560         __swab32s(&hr->hr_action);
2561         __swab32s(&hr->hr_archive_id);
2562         __swab64s(&hr->hr_flags);
2563         __swab32s(&hr->hr_itemcount);
2564         __swab32s(&hr->hr_data_len);
2565 }
2566 EXPORT_SYMBOL(lustre_swab_hsm_request);
2567
2568 void lustre_swab_object_update(struct object_update *ou)
2569 {
2570         struct object_update_param *param;
2571         size_t  i;
2572
2573         __swab16s(&ou->ou_type);
2574         __swab16s(&ou->ou_params_count);
2575         __swab32s(&ou->ou_master_index);
2576         __swab32s(&ou->ou_flags);
2577         __swab32s(&ou->ou_padding1);
2578         __swab64s(&ou->ou_batchid);
2579         lustre_swab_lu_fid(&ou->ou_fid);
2580         param = &ou->ou_params[0];
2581         for (i = 0; i < ou->ou_params_count; i++) {
2582                 __swab16s(&param->oup_len);
2583                 __swab16s(&param->oup_padding);
2584                 __swab32s(&param->oup_padding2);
2585                 param = (struct object_update_param *)((char *)param +
2586                          object_update_param_size(param));
2587         }
2588 }
2589 EXPORT_SYMBOL(lustre_swab_object_update);
2590
2591 void lustre_swab_object_update_request(struct object_update_request *our)
2592 {
2593         size_t i;
2594         __swab32s(&our->ourq_magic);
2595         __swab16s(&our->ourq_count);
2596         __swab16s(&our->ourq_padding);
2597         for (i = 0; i < our->ourq_count; i++) {
2598                 struct object_update *ou;
2599
2600                 ou = object_update_request_get(our, i, NULL);
2601                 if (ou == NULL)
2602                         return;
2603                 lustre_swab_object_update(ou);
2604         }
2605 }
2606 EXPORT_SYMBOL(lustre_swab_object_update_request);
2607
2608 void lustre_swab_object_update_result(struct object_update_result *our)
2609 {
2610         __swab32s(&our->our_rc);
2611         __swab16s(&our->our_datalen);
2612         __swab16s(&our->our_padding);
2613 }
2614 EXPORT_SYMBOL(lustre_swab_object_update_result);
2615
2616 void lustre_swab_object_update_reply(struct object_update_reply *our)
2617 {
2618         size_t i;
2619
2620         __swab32s(&our->ourp_magic);
2621         __swab16s(&our->ourp_count);
2622         __swab16s(&our->ourp_padding);
2623         for (i = 0; i < our->ourp_count; i++) {
2624                 struct object_update_result *ourp;
2625
2626                 __swab16s(&our->ourp_lens[i]);
2627                 ourp = object_update_result_get(our, i, NULL);
2628                 if (ourp == NULL)
2629                         return;
2630                 lustre_swab_object_update_result(ourp);
2631         }
2632 }
2633 EXPORT_SYMBOL(lustre_swab_object_update_reply);
2634
2635 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2636 {
2637         __swab64s(&msl->msl_flags);
2638 }
2639 EXPORT_SYMBOL(lustre_swab_swap_layouts);
2640
2641 void lustre_swab_close_data(struct close_data *cd)
2642 {
2643         lustre_swab_lu_fid(&cd->cd_fid);
2644         __swab64s(&cd->cd_data_version);
2645 }
2646 EXPORT_SYMBOL(lustre_swab_close_data);
2647
2648 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2649 {
2650         __swab32s(&lr->lr_event);
2651         __swab32s(&lr->lr_index);
2652         __swab32s(&lr->lr_flags);
2653         __swab32s(&lr->lr_valid);
2654         __swab32s(&lr->lr_speed);
2655         __swab16s(&lr->lr_version);
2656         __swab16s(&lr->lr_active);
2657         __swab16s(&lr->lr_param);
2658         __swab16s(&lr->lr_async_windows);
2659         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2660         lustre_swab_lu_fid(&lr->lr_fid);
2661         lustre_swab_lu_fid(&lr->lr_fid2);
2662         lustre_swab_lu_fid(&lr->lr_fid3);
2663         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2664         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2665 }
2666 EXPORT_SYMBOL(lustre_swab_lfsck_request);
2667
2668 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2669 {
2670         __swab32s(&lr->lr_status);
2671         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2672         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2673 }
2674 EXPORT_SYMBOL(lustre_swab_lfsck_reply);
2675
2676 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2677 {
2678         lustre_swab_lu_fid(&ent->loe_key);
2679         lustre_swab_lu_fid(&ent->loe_rec.lor_fid);
2680         __swab32s(&ent->loe_rec.lor_uid);
2681         __swab32s(&ent->loe_rec.lor_gid);
2682 }
2683 EXPORT_SYMBOL(lustre_swab_orphan_ent);