drivers/staging/lustre/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, 2012, 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 <linux/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
  55 static inline int lustre_msg_hdr_size_v2(int count)
  56 {
  57         return cfs_size_round(offsetof(struct lustre_msg_v2,
  58                                        lm_buflens[count]));
  59 }
  60
  61 int lustre_msg_hdr_size(__u32 magic, int count)
  62 {
  63         switch (magic) {
  64         case LUSTRE_MSG_MAGIC_V2:
  65                 return lustre_msg_hdr_size_v2(count);
  66         default:
  67                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  68                 return -EINVAL;
  69         }
  70 }
  71 EXPORT_SYMBOL(lustre_msg_hdr_size);
  72
  73 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  74                             int index)
  75 {
  76         if (inout)
  77                 lustre_set_req_swabbed(req, index);
  78         else
  79                 lustre_set_rep_swabbed(req, index);
  80 }
  81 EXPORT_SYMBOL(ptlrpc_buf_set_swabbed);
  82
  83 int ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  84                          int index)
  85 {
  86         if (inout)
  87                 return (ptlrpc_req_need_swab(req) &&
  88                         !lustre_req_swabbed(req, index));
  89         else
  90                 return (ptlrpc_rep_need_swab(req) &&
  91                         !lustre_rep_swabbed(req, index));
  92 }
  93 EXPORT_SYMBOL(ptlrpc_buf_need_swab);
  94
  95 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  96                                               __u32 version)
  97 {
  98         __u32 ver = lustre_msg_get_version(msg);
  99         return (ver & LUSTRE_VERSION_MASK) != version;
 100 }
 101
 102 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version)
 103 {
 104         switch (msg->lm_magic) {
 105         case LUSTRE_MSG_MAGIC_V1:
 106                 CERROR("msg v1 not supported - please upgrade you system\n");
 107                 return -EINVAL;
 108         case LUSTRE_MSG_MAGIC_V2:
 109                 return lustre_msg_check_version_v2(msg, version);
 110         default:
 111                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 112                 return 0;
 113         }
 114 }
 115 EXPORT_SYMBOL(lustre_msg_check_version);
 116
 117 /* early reply size */
 118 int lustre_msg_early_size()
 119 {
 120         static int size = 0;
 121         if (!size) {
 122                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 123                  * with the old client (< 2.3) which doesn't have pb_jobid
 124                  * in the ptlrpc_body.
 125                  *
 126                  * XXX Remove this whenever we dorp interoprability with such
 127                  *     client.
 128                  */
 129                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 130                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 131         }
 132         return size;
 133 }
 134 EXPORT_SYMBOL(lustre_msg_early_size);
 135
 136 int lustre_msg_size_v2(int count, __u32 *lengths)
 137 {
 138         int size;
 139         int i;
 140
 141         size = lustre_msg_hdr_size_v2(count);
 142         for (i = 0; i < count; i++)
 143                 size += cfs_size_round(lengths[i]);
 144
 145         return size;
 146 }
 147 EXPORT_SYMBOL(lustre_msg_size_v2);
 148
 149 /* This returns the size of the buffer that is required to hold a lustre_msg
 150  * with the given sub-buffer lengths.
 151  * NOTE: this should only be used for NEW requests, and should always be
 152  *       in the form of a v2 request.  If this is a connection to a v1
 153  *       target then the first buffer will be stripped because the ptlrpc
 154  *       data is part of the lustre_msg_v1 header. b=14043 */
 155 int lustre_msg_size(__u32 magic, int count, __u32 *lens)
 156 {
 157         __u32 size[] = { sizeof(struct ptlrpc_body) };
 158
 159         if (!lens) {
 160                 LASSERT(count == 1);
 161                 lens = size;
 162         }
 163
 164         LASSERT(count > 0);
 165         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 166
 167         switch (magic) {
 168         case LUSTRE_MSG_MAGIC_V2:
 169                 return lustre_msg_size_v2(count, lens);
 170         default:
 171                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 172                 return -EINVAL;
 173         }
 174 }
 175 EXPORT_SYMBOL(lustre_msg_size);
 176
 177 /* This is used to determine the size of a buffer that was already packed
 178  * and will correctly handle the different message formats. */
 179 int lustre_packed_msg_size(struct lustre_msg *msg)
 180 {
 181         switch (msg->lm_magic) {
 182         case LUSTRE_MSG_MAGIC_V2:
 183                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 184         default:
 185                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 186                 return 0;
 187         }
 188 }
 189 EXPORT_SYMBOL(lustre_packed_msg_size);
 190
 191 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 192                         char **bufs)
 193 {
 194         char *ptr;
 195         int i;
 196
 197         msg->lm_bufcount = count;
 198         /* XXX: lm_secflvr uninitialized here */
 199         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 200
 201         for (i = 0; i < count; i++)
 202                 msg->lm_buflens[i] = lens[i];
 203
 204         if (bufs == NULL)
 205                 return;
 206
 207         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 208         for (i = 0; i < count; i++) {
 209                 char *tmp = bufs[i];
 210                 LOGL(tmp, lens[i], ptr);
 211         }
 212 }
 213 EXPORT_SYMBOL(lustre_init_msg_v2);
 214
 215 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 216                                   int count, __u32 *lens, char **bufs)
 217 {
 218         int reqlen, rc;
 219
 220         reqlen = lustre_msg_size_v2(count, lens);
 221
 222         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 223         if (rc)
 224                 return rc;
 225
 226         req->rq_reqlen = reqlen;
 227
 228         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 229         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 230         return 0;
 231 }
 232
 233 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 234                         __u32 *lens, char **bufs)
 235 {
 236         __u32 size[] = { sizeof(struct ptlrpc_body) };
 237
 238         if (!lens) {
 239                 LASSERT(count == 1);
 240                 lens = size;
 241         }
 242
 243         LASSERT(count > 0);
 244         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 245
 246         /* only use new format, we don't need to be compatible with 1.4 */
 247         magic = LUSTRE_MSG_MAGIC_V2;
 248
 249         switch (magic) {
 250         case LUSTRE_MSG_MAGIC_V2:
 251                 return lustre_pack_request_v2(req, count, lens, bufs);
 252         default:
 253                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 254                 return -EINVAL;
 255         }
 256 }
 257 EXPORT_SYMBOL(lustre_pack_request);
 258
 259 #if RS_DEBUG
 260 LIST_HEAD(ptlrpc_rs_debug_lru);
 261 spinlock_t ptlrpc_rs_debug_lock;
 262
 263 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 264 do {                                                                    \
 265         spin_lock(&ptlrpc_rs_debug_lock);                               \
 266         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 267         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 268 } while (0)
 269
 270 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 271 do {                                                                    \
 272         spin_lock(&ptlrpc_rs_debug_lock);                               \
 273         list_del(&(rs)->rs_debug_list);                         \
 274         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 275 } while (0)
 276 #else
 277 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 278 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 279 #endif
 280
 281 struct ptlrpc_reply_state *
 282 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 283 {
 284         struct ptlrpc_reply_state *rs = NULL;
 285
 286         spin_lock(&svcpt->scp_rep_lock);
 287
 288         /* See if we have anything in a pool, and wait if nothing */
 289         while (list_empty(&svcpt->scp_rep_idle)) {
 290                 struct l_wait_info      lwi;
 291                 int                     rc;
 292
 293                 spin_unlock(&svcpt->scp_rep_lock);
 294                 /* If we cannot get anything for some long time, we better
 295                  * bail out instead of waiting infinitely */
 296                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 297                 rc = l_wait_event(svcpt->scp_rep_waitq,
 298                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 299                 if (rc != 0)
 300                         goto out;
 301                 spin_lock(&svcpt->scp_rep_lock);
 302         }
 303
 304         rs = list_entry(svcpt->scp_rep_idle.next,
 305                             struct ptlrpc_reply_state, rs_list);
 306         list_del(&rs->rs_list);
 307
 308         spin_unlock(&svcpt->scp_rep_lock);
 309
 310         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 311         rs->rs_svcpt = svcpt;
 312         rs->rs_prealloc = 1;
 313 out:
 314         return rs;
 315 }
 316
 317 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 318 {
 319         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 320
 321         spin_lock(&svcpt->scp_rep_lock);
 322         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 323         spin_unlock(&svcpt->scp_rep_lock);
 324         wake_up(&svcpt->scp_rep_waitq);
 325 }
 326
 327 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 328                          __u32 *lens, char **bufs, int flags)
 329 {
 330         struct ptlrpc_reply_state *rs;
 331         int                     msg_len, rc;
 332         ENTRY;
 333
 334         LASSERT(req->rq_reply_state == NULL);
 335
 336         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 337                 spin_lock(&req->rq_lock);
 338                 req->rq_packed_final = 1;
 339                 spin_unlock(&req->rq_lock);
 340         }
 341
 342         msg_len = lustre_msg_size_v2(count, lens);
 343         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 344         if (rc)
 345                 RETURN(rc);
 346
 347         rs = req->rq_reply_state;
 348         atomic_set(&rs->rs_refcount, 1);    /* 1 ref for rq_reply_state */
 349         rs->rs_cb_id.cbid_fn = reply_out_callback;
 350         rs->rs_cb_id.cbid_arg = rs;
 351         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 352         INIT_LIST_HEAD(&rs->rs_exp_list);
 353         INIT_LIST_HEAD(&rs->rs_obd_list);
 354         INIT_LIST_HEAD(&rs->rs_list);
 355         spin_lock_init(&rs->rs_lock);
 356
 357         req->rq_replen = msg_len;
 358         req->rq_reply_state = rs;
 359         req->rq_repmsg = rs->rs_msg;
 360
 361         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 362         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 363
 364         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 365
 366         RETURN(0);
 367 }
 368 EXPORT_SYMBOL(lustre_pack_reply_v2);
 369
 370 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 371                             char **bufs, int flags)
 372 {
 373         int rc = 0;
 374         __u32 size[] = { sizeof(struct ptlrpc_body) };
 375
 376         if (!lens) {
 377                 LASSERT(count == 1);
 378                 lens = size;
 379         }
 380
 381         LASSERT(count > 0);
 382         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 383
 384         switch (req->rq_reqmsg->lm_magic) {
 385         case LUSTRE_MSG_MAGIC_V2:
 386                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 387                 break;
 388         default:
 389                 LASSERTF(0, "incorrect message magic: %08x\n",
 390                          req->rq_reqmsg->lm_magic);
 391                 rc = -EINVAL;
 392         }
 393         if (rc != 0)
 394                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 395                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 396         return rc;
 397 }
 398 EXPORT_SYMBOL(lustre_pack_reply_flags);
 399
 400 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 401                       char **bufs)
 402 {
 403         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 404 }
 405 EXPORT_SYMBOL(lustre_pack_reply);
 406
 407 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, int n, int min_size)
 408 {
 409         int i, offset, buflen, bufcount;
 410
 411         LASSERT(m != NULL);
 412         LASSERT(n >= 0);
 413
 414         bufcount = m->lm_bufcount;
 415         if (unlikely(n >= bufcount)) {
 416                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 417                        m, n, bufcount);
 418                 return NULL;
 419         }
 420
 421         buflen = m->lm_buflens[n];
 422         if (unlikely(buflen < min_size)) {
 423                 CERROR("msg %p buffer[%d] size %d too small "
 424                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 425                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 426                 return NULL;
 427         }
 428
 429         offset = lustre_msg_hdr_size_v2(bufcount);
 430         for (i = 0; i < n; i++)
 431                 offset += cfs_size_round(m->lm_buflens[i]);
 432
 433         return (char *)m + offset;
 434 }
 435
 436 void *lustre_msg_buf(struct lustre_msg *m, int n, int min_size)
 437 {
 438         switch (m->lm_magic) {
 439         case LUSTRE_MSG_MAGIC_V2:
 440                 return lustre_msg_buf_v2(m, n, min_size);
 441         default:
 442                 LASSERTF(0, "incorrect message magic: %08x(msg:%p)\n", m->lm_magic, m);
 443                 return NULL;
 444         }
 445 }
 446 EXPORT_SYMBOL(lustre_msg_buf);
 447
 448 int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, int segment,
 449                          unsigned int newlen, int move_data)
 450 {
 451         char   *tail = NULL, *newpos;
 452         int     tail_len = 0, n;
 453
 454         LASSERT(msg);
 455         LASSERT(msg->lm_bufcount > segment);
 456         LASSERT(msg->lm_buflens[segment] >= newlen);
 457
 458         if (msg->lm_buflens[segment] == newlen)
 459                 goto out;
 460
 461         if (move_data && msg->lm_bufcount > segment + 1) {
 462                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 463                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 464                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 465         }
 466
 467         msg->lm_buflens[segment] = newlen;
 468
 469         if (tail && tail_len) {
 470                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 471                 LASSERT(newpos <= tail);
 472                 if (newpos != tail)
 473                         memmove(newpos, tail, tail_len);
 474         }
 475 out:
 476         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 477 }
 478
 479 /*
 480  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 481  * we also move data forward from @segment + 1.
 482  *
 483  * if @newlen == 0, we remove the segment completely, but we still keep the
 484  * totally bufcount the same to save possible data moving. this will leave a
 485  * unused segment with size 0 at the tail, but that's ok.
 486  *
 487  * return new msg size after shrinking.
 488  *
 489  * CAUTION:
 490  * + if any buffers higher than @segment has been filled in, must call shrink
 491  *   with non-zero @move_data.
 492  * + caller should NOT keep pointers to msg buffers which higher than @segment
 493  *   after call shrink.
 494  */
 495 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 496                       unsigned int newlen, int move_data)
 497 {
 498         switch (msg->lm_magic) {
 499         case LUSTRE_MSG_MAGIC_V2:
 500                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 501         default:
 502                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 503         }
 504 }
 505 EXPORT_SYMBOL(lustre_shrink_msg);
 506
 507 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 508 {
 509         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 510
 511         LASSERT (atomic_read(&rs->rs_refcount) == 0);
 512         LASSERT (!rs->rs_difficult || rs->rs_handled);
 513         LASSERT (!rs->rs_on_net);
 514         LASSERT (!rs->rs_scheduled);
 515         LASSERT (rs->rs_export == NULL);
 516         LASSERT (rs->rs_nlocks == 0);
 517         LASSERT (list_empty(&rs->rs_exp_list));
 518         LASSERT (list_empty(&rs->rs_obd_list));
 519
 520         sptlrpc_svc_free_rs(rs);
 521 }
 522 EXPORT_SYMBOL(lustre_free_reply_state);
 523
 524 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 525 {
 526         int swabbed, required_len, i;
 527
 528         /* Now we know the sender speaks my language. */
 529         required_len = lustre_msg_hdr_size_v2(0);
 530         if (len < required_len) {
 531                 /* can't even look inside the message */
 532                 CERROR("message length %d too small for lustre_msg\n", len);
 533                 return -EINVAL;
 534         }
 535
 536         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 537
 538         if (swabbed) {
 539                 __swab32s(&m->lm_magic);
 540                 __swab32s(&m->lm_bufcount);
 541                 __swab32s(&m->lm_secflvr);
 542                 __swab32s(&m->lm_repsize);
 543                 __swab32s(&m->lm_cksum);
 544                 __swab32s(&m->lm_flags);
 545                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 546                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 547         }
 548
 549         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 550         if (len < required_len) {
 551                 /* didn't receive all the buffer lengths */
 552                 CERROR ("message length %d too small for %d buflens\n",
 553                         len, m->lm_bufcount);
 554                 return -EINVAL;
 555         }
 556
 557         for (i = 0; i < m->lm_bufcount; i++) {
 558                 if (swabbed)
 559                         __swab32s(&m->lm_buflens[i]);
 560                 required_len += cfs_size_round(m->lm_buflens[i]);
 561         }
 562
 563         if (len < required_len) {
 564                 CERROR("len: %d, required_len %d\n", len, required_len);
 565                 CERROR("bufcount: %d\n", m->lm_bufcount);
 566                 for (i = 0; i < m->lm_bufcount; i++)
 567                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 568                 return -EINVAL;
 569         }
 570
 571         return swabbed;
 572 }
 573
 574 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 575 {
 576         int required_len, rc;
 577         ENTRY;
 578
 579         /* We can provide a slightly better error log, if we check the
 580          * message magic and version first.  In the future, struct
 581          * lustre_msg may grow, and we'd like to log a version mismatch,
 582          * rather than a short message.
 583          *
 584          */
 585         required_len = offsetof(struct lustre_msg, lm_magic) +
 586                        sizeof(m->lm_magic);
 587         if (len < required_len) {
 588                 /* can't even look inside the message */
 589                 CERROR("message length %d too small for magic/version check\n",
 590                        len);
 591                 RETURN(-EINVAL);
 592         }
 593
 594         rc = lustre_unpack_msg_v2(m, len);
 595
 596         RETURN(rc);
 597 }
 598 EXPORT_SYMBOL(__lustre_unpack_msg);
 599
 600 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 601 {
 602         int rc;
 603         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 604         if (rc == 1) {
 605                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 606                 rc = 0;
 607         }
 608         return rc;
 609 }
 610 EXPORT_SYMBOL(ptlrpc_unpack_req_msg);
 611
 612 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 613 {
 614         int rc;
 615         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 616         if (rc == 1) {
 617                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 618                 rc = 0;
 619         }
 620         return rc;
 621 }
 622 EXPORT_SYMBOL(ptlrpc_unpack_rep_msg);
 623
 624 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 625                                                const int inout, int offset)
 626 {
 627         struct ptlrpc_body *pb;
 628         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 629
 630         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 631         if (!pb) {
 632                 CERROR("error unpacking ptlrpc body\n");
 633                 return -EFAULT;
 634         }
 635         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 636                 lustre_swab_ptlrpc_body(pb);
 637                 ptlrpc_buf_set_swabbed(req, inout, offset);
 638         }
 639
 640         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 641                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 642                  return -EINVAL;
 643         }
 644
 645         return 0;
 646 }
 647
 648 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 649 {
 650         switch (req->rq_reqmsg->lm_magic) {
 651         case LUSTRE_MSG_MAGIC_V2:
 652                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 653         default:
 654                 CERROR("bad lustre msg magic: %08x\n",
 655                        req->rq_reqmsg->lm_magic);
 656                 return -EINVAL;
 657         }
 658 }
 659
 660 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 661 {
 662         switch (req->rq_repmsg->lm_magic) {
 663         case LUSTRE_MSG_MAGIC_V2:
 664                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 665         default:
 666                 CERROR("bad lustre msg magic: %08x\n",
 667                        req->rq_repmsg->lm_magic);
 668                 return -EINVAL;
 669         }
 670 }
 671
 672 static inline int lustre_msg_buflen_v2(struct lustre_msg_v2 *m, int n)
 673 {
 674         if (n >= m->lm_bufcount)
 675                 return 0;
 676
 677         return m->lm_buflens[n];
 678 }
 679
 680 /**
 681  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 682  * \param m lustre_msg (request or reply) to look at
 683  * \param n message index (base 0)
 684  *
 685  * returns zero for non-existent message indices
 686  */
 687 int lustre_msg_buflen(struct lustre_msg *m, int n)
 688 {
 689         switch (m->lm_magic) {
 690         case LUSTRE_MSG_MAGIC_V2:
 691                 return lustre_msg_buflen_v2(m, n);
 692         default:
 693                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 694                 return -EINVAL;
 695         }
 696 }
 697 EXPORT_SYMBOL(lustre_msg_buflen);
 698
 699 static inline void
 700 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, int n, int len)
 701 {
 702         if (n >= m->lm_bufcount)
 703                 LBUG();
 704
 705         m->lm_buflens[n] = len;
 706 }
 707
 708 void lustre_msg_set_buflen(struct lustre_msg *m, int n, int len)
 709 {
 710         switch (m->lm_magic) {
 711         case LUSTRE_MSG_MAGIC_V2:
 712                 lustre_msg_set_buflen_v2(m, n, len);
 713                 return;
 714         default:
 715                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 716         }
 717 }
 718
 719 EXPORT_SYMBOL(lustre_msg_set_buflen);
 720
 721 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 722  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 723 int lustre_msg_bufcount(struct lustre_msg *m)
 724 {
 725         switch (m->lm_magic) {
 726         case LUSTRE_MSG_MAGIC_V2:
 727                 return m->lm_bufcount;
 728         default:
 729                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 730                 return -EINVAL;
 731         }
 732 }
 733 EXPORT_SYMBOL(lustre_msg_bufcount);
 734
 735 char *lustre_msg_string(struct lustre_msg *m, int index, int max_len)
 736 {
 737         /* max_len == 0 means the string should fill the buffer */
 738         char *str;
 739         int slen, blen;
 740
 741         switch (m->lm_magic) {
 742         case LUSTRE_MSG_MAGIC_V2:
 743                 str = lustre_msg_buf_v2(m, index, 0);
 744                 blen = lustre_msg_buflen_v2(m, index);
 745                 break;
 746         default:
 747                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 748         }
 749
 750         if (str == NULL) {
 751                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 752                 return NULL;
 753         }
 754
 755         slen = strnlen(str, blen);
 756
 757         if (slen == blen) {                  /* not NULL terminated */
 758                 CERROR("can't unpack non-NULL terminated string in "
 759                         "msg %p buffer[%d] len %d\n", m, index, blen);
 760                 return NULL;
 761         }
 762
 763         if (max_len == 0) {
 764                 if (slen != blen - 1) {
 765                         CERROR("can't unpack short string in msg %p "
 766                                "buffer[%d] len %d: strlen %d\n",
 767                                m, index, blen, slen);
 768                         return NULL;
 769                 }
 770         } else if (slen > max_len) {
 771                 CERROR("can't unpack oversized string in msg %p "
 772                        "buffer[%d] len %d strlen %d: max %d expected\n",
 773                        m, index, blen, slen, max_len);
 774                 return NULL;
 775         }
 776
 777         return str;
 778 }
 779 EXPORT_SYMBOL(lustre_msg_string);
 780
 781 /* Wrap up the normal fixed length cases */
 782 static inline void *__lustre_swab_buf(struct lustre_msg *msg, int index,
 783                                       int min_size, void *swabber)
 784 {
 785         void *ptr = NULL;
 786
 787         LASSERT(msg != NULL);
 788         switch (msg->lm_magic) {
 789         case LUSTRE_MSG_MAGIC_V2:
 790                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 791                 break;
 792         default:
 793                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 794         }
 795
 796         if (ptr && swabber)
 797                 ((void (*)(void *))swabber)(ptr);
 798
 799         return ptr;
 800 }
 801
 802 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 803 {
 804         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 805                                  sizeof(struct ptlrpc_body_v2));
 806 }
 807
 808 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
 809 {
 810         switch (msg->lm_magic) {
 811         case LUSTRE_MSG_MAGIC_V1:
 812         case LUSTRE_MSG_MAGIC_V1_SWABBED:
 813                 return 0;
 814         case LUSTRE_MSG_MAGIC_V2:
 815                 /* already in host endian */
 816                 return msg->lm_flags;
 817         default:
 818                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 819                 return 0;
 820         }
 821 }
 822 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 823
 824 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 825 {
 826         switch (msg->lm_magic) {
 827         case LUSTRE_MSG_MAGIC_V1:
 828                 return;
 829         case LUSTRE_MSG_MAGIC_V2:
 830                 msg->lm_flags = flags;
 831                 return;
 832         default:
 833                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 834         }
 835 }
 836
 837 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 838 {
 839         switch (msg->lm_magic) {
 840         case LUSTRE_MSG_MAGIC_V2: {
 841                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 842                 if (!pb) {
 843                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 844                         return 0;
 845                 }
 846                 return pb->pb_flags;
 847         }
 848         default:
 849                 /* flags might be printed in debug code while message
 850                  * uninitialized */
 851                 return 0;
 852         }
 853 }
 854 EXPORT_SYMBOL(lustre_msg_get_flags);
 855
 856 void lustre_msg_add_flags(struct lustre_msg *msg, int flags)
 857 {
 858         switch (msg->lm_magic) {
 859         case LUSTRE_MSG_MAGIC_V2: {
 860                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 861                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 862                 pb->pb_flags |= flags;
 863                 return;
 864         }
 865         default:
 866                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 867         }
 868 }
 869 EXPORT_SYMBOL(lustre_msg_add_flags);
 870
 871 void lustre_msg_set_flags(struct lustre_msg *msg, int flags)
 872 {
 873         switch (msg->lm_magic) {
 874         case LUSTRE_MSG_MAGIC_V2: {
 875                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 876                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 877                 pb->pb_flags = flags;
 878                 return;
 879         }
 880         default:
 881                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 882         }
 883 }
 884 EXPORT_SYMBOL(lustre_msg_set_flags);
 885
 886 void lustre_msg_clear_flags(struct lustre_msg *msg, int flags)
 887 {
 888         switch (msg->lm_magic) {
 889         case LUSTRE_MSG_MAGIC_V2: {
 890                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 891                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 892                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
 893                 return;
 894         }
 895         default:
 896                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 897         }
 898 }
 899 EXPORT_SYMBOL(lustre_msg_clear_flags);
 900
 901 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 902 {
 903         switch (msg->lm_magic) {
 904         case LUSTRE_MSG_MAGIC_V2: {
 905                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 906                 if (!pb) {
 907                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 908                         return 0;
 909                 }
 910                 return pb->pb_op_flags;
 911         }
 912         default:
 913                 return 0;
 914         }
 915 }
 916 EXPORT_SYMBOL(lustre_msg_get_op_flags);
 917
 918 void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags)
 919 {
 920         switch (msg->lm_magic) {
 921         case LUSTRE_MSG_MAGIC_V2: {
 922                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 923                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 924                 pb->pb_op_flags |= flags;
 925                 return;
 926         }
 927         default:
 928                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 929         }
 930 }
 931 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 932
 933 void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags)
 934 {
 935         switch (msg->lm_magic) {
 936         case LUSTRE_MSG_MAGIC_V2: {
 937                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 938                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 939                 pb->pb_op_flags |= flags;
 940                 return;
 941         }
 942         default:
 943                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 944         }
 945 }
 946 EXPORT_SYMBOL(lustre_msg_set_op_flags);
 947
 948 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 949 {
 950         switch (msg->lm_magic) {
 951         case LUSTRE_MSG_MAGIC_V2: {
 952                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 953                 if (!pb) {
 954                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 955                         return NULL;
 956                 }
 957                 return &pb->pb_handle;
 958         }
 959         default:
 960                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 961                 return NULL;
 962         }
 963 }
 964 EXPORT_SYMBOL(lustre_msg_get_handle);
 965
 966 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 967 {
 968         switch (msg->lm_magic) {
 969         case LUSTRE_MSG_MAGIC_V2: {
 970                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 971                 if (!pb) {
 972                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 973                         return PTL_RPC_MSG_ERR;
 974                 }
 975                 return pb->pb_type;
 976         }
 977         default:
 978                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 979                 return PTL_RPC_MSG_ERR;
 980         }
 981 }
 982 EXPORT_SYMBOL(lustre_msg_get_type);
 983
 984 __u32 lustre_msg_get_version(struct lustre_msg *msg)
 985 {
 986         switch (msg->lm_magic) {
 987         case LUSTRE_MSG_MAGIC_V2: {
 988                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 989                 if (!pb) {
 990                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 991                         return 0;
 992                 }
 993                 return pb->pb_version;
 994         }
 995         default:
 996                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 997                 return 0;
 998         }
 999 }
1000 EXPORT_SYMBOL(lustre_msg_get_version);
1001
1002 void lustre_msg_add_version(struct lustre_msg *msg, int version)
1003 {
1004         switch (msg->lm_magic) {
1005         case LUSTRE_MSG_MAGIC_V2: {
1006                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1007                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1008                 pb->pb_version |= version;
1009                 return;
1010         }
1011         default:
1012                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1013         }
1014 }
1015 EXPORT_SYMBOL(lustre_msg_add_version);
1016
1017 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1018 {
1019         switch (msg->lm_magic) {
1020         case LUSTRE_MSG_MAGIC_V2: {
1021                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1022                 if (!pb) {
1023                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1024                         return 0;
1025                 }
1026                 return pb->pb_opc;
1027         }
1028         default:
1029                 CERROR("incorrect message magic: %08x(msg:%p)\n", msg->lm_magic, msg);
1030                 LBUG();
1031                 return 0;
1032         }
1033 }
1034 EXPORT_SYMBOL(lustre_msg_get_opc);
1035
1036 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1037 {
1038         switch (msg->lm_magic) {
1039         case LUSTRE_MSG_MAGIC_V2: {
1040                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1041                 if (!pb) {
1042                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1043                         return 0;
1044                 }
1045                 return pb->pb_last_xid;
1046         }
1047         default:
1048                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1049                 return 0;
1050         }
1051 }
1052 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1053
1054 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1055 {
1056         switch (msg->lm_magic) {
1057         case LUSTRE_MSG_MAGIC_V2: {
1058                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1059                 if (!pb) {
1060                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1061                         return 0;
1062                 }
1063                 return pb->pb_last_committed;
1064         }
1065         default:
1066                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1067                 return 0;
1068         }
1069 }
1070 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1071
1072 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1073 {
1074         switch (msg->lm_magic) {
1075         case LUSTRE_MSG_MAGIC_V1:
1076                 return NULL;
1077         case LUSTRE_MSG_MAGIC_V2: {
1078                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1079                 if (!pb) {
1080                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1081                         return NULL;
1082                 }
1083                 return pb->pb_pre_versions;
1084         }
1085         default:
1086                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1087                 return NULL;
1088         }
1089 }
1090 EXPORT_SYMBOL(lustre_msg_get_versions);
1091
1092 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1093 {
1094         switch (msg->lm_magic) {
1095         case LUSTRE_MSG_MAGIC_V2: {
1096                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1097                 if (!pb) {
1098                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1099                         return 0;
1100                 }
1101                 return pb->pb_transno;
1102         }
1103         default:
1104                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1105                 return 0;
1106         }
1107 }
1108 EXPORT_SYMBOL(lustre_msg_get_transno);
1109
1110 int lustre_msg_get_status(struct lustre_msg *msg)
1111 {
1112         switch (msg->lm_magic) {
1113         case LUSTRE_MSG_MAGIC_V2: {
1114                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1115                 if (!pb) {
1116                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1117                         return -EINVAL;
1118                 }
1119                 return pb->pb_status;
1120         }
1121         default:
1122                 /* status might be printed in debug code while message
1123                  * uninitialized */
1124                 return -EINVAL;
1125         }
1126 }
1127 EXPORT_SYMBOL(lustre_msg_get_status);
1128
1129 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1130 {
1131         switch (msg->lm_magic) {
1132         case LUSTRE_MSG_MAGIC_V2: {
1133                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1134                 if (!pb) {
1135                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1136                         return -EINVAL;
1137                 }
1138                 return pb->pb_slv;
1139         }
1140         default:
1141                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1142                 return -EINVAL;
1143         }
1144 }
1145 EXPORT_SYMBOL(lustre_msg_get_slv);
1146
1147
1148 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1149 {
1150         switch (msg->lm_magic) {
1151         case LUSTRE_MSG_MAGIC_V2: {
1152                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1153                 if (!pb) {
1154                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1155                         return;
1156                 }
1157                 pb->pb_slv = slv;
1158                 return;
1159         }
1160         default:
1161                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1162                 return;
1163         }
1164 }
1165 EXPORT_SYMBOL(lustre_msg_set_slv);
1166
1167 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1168 {
1169         switch (msg->lm_magic) {
1170         case LUSTRE_MSG_MAGIC_V2: {
1171                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1172                 if (!pb) {
1173                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1174                         return -EINVAL;
1175                 }
1176                 return pb->pb_limit;
1177         }
1178         default:
1179                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1180                 return -EINVAL;
1181         }
1182 }
1183 EXPORT_SYMBOL(lustre_msg_get_limit);
1184
1185
1186 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1187 {
1188         switch (msg->lm_magic) {
1189         case LUSTRE_MSG_MAGIC_V2: {
1190                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1191                 if (!pb) {
1192                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1193                         return;
1194                 }
1195                 pb->pb_limit = limit;
1196                 return;
1197         }
1198         default:
1199                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1200                 return;
1201         }
1202 }
1203 EXPORT_SYMBOL(lustre_msg_set_limit);
1204
1205 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1206 {
1207         switch (msg->lm_magic) {
1208         case LUSTRE_MSG_MAGIC_V2: {
1209                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1210                 if (!pb) {
1211                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1212                         return 0;
1213                 }
1214                 return pb->pb_conn_cnt;
1215         }
1216         default:
1217                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1218                 return 0;
1219         }
1220 }
1221 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1222
1223 int lustre_msg_is_v1(struct lustre_msg *msg)
1224 {
1225         switch (msg->lm_magic) {
1226         case LUSTRE_MSG_MAGIC_V1:
1227         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1228                 return 1;
1229         default:
1230                 return 0;
1231         }
1232 }
1233 EXPORT_SYMBOL(lustre_msg_is_v1);
1234
1235 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1236 {
1237         switch (msg->lm_magic) {
1238         case LUSTRE_MSG_MAGIC_V2:
1239                 return msg->lm_magic;
1240         default:
1241                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1242                 return 0;
1243         }
1244 }
1245 EXPORT_SYMBOL(lustre_msg_get_magic);
1246
1247 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1248 {
1249         switch (msg->lm_magic) {
1250         case LUSTRE_MSG_MAGIC_V1:
1251         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1252                 return 0;
1253         case LUSTRE_MSG_MAGIC_V2: {
1254                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1255                 if (!pb) {
1256                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1257                         return 0;
1258
1259                 }
1260                 return pb->pb_timeout;
1261         }
1262         default:
1263                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1264                 return 0;
1265         }
1266 }
1267
1268 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1269 {
1270         switch (msg->lm_magic) {
1271         case LUSTRE_MSG_MAGIC_V1:
1272         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1273                 return 0;
1274         case LUSTRE_MSG_MAGIC_V2: {
1275                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1276                 if (!pb) {
1277                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1278                         return 0;
1279
1280                 }
1281                 return pb->pb_service_time;
1282         }
1283         default:
1284                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1285                 return 0;
1286         }
1287 }
1288
1289 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1290 {
1291         switch (msg->lm_magic) {
1292         case LUSTRE_MSG_MAGIC_V1:
1293         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1294                 return NULL;
1295         case LUSTRE_MSG_MAGIC_V2: {
1296                 struct ptlrpc_body *pb =
1297                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1298                                           sizeof(struct ptlrpc_body));
1299                 if (!pb)
1300                         return NULL;
1301
1302                 return pb->pb_jobid;
1303         }
1304         default:
1305                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1306                 return NULL;
1307         }
1308 }
1309 EXPORT_SYMBOL(lustre_msg_get_jobid);
1310
1311 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1312 {
1313         switch (msg->lm_magic) {
1314         case LUSTRE_MSG_MAGIC_V2:
1315                 return msg->lm_cksum;
1316         default:
1317                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1318                 return 0;
1319         }
1320 }
1321
1322 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1323 /*
1324  * In 1.6 and 1.8 the checksum was computed only on struct ptlrpc_body as
1325  * it was in 1.6 (88 bytes, smaller than the full size in 1.8).  It makes
1326  * more sense to compute the checksum on the full ptlrpc_body, regardless
1327  * of what size it is, but in order to keep interoperability with 1.8 we
1328  * can optionally also checksum only the first 88 bytes (caller decides). */
1329 # define ptlrpc_body_cksum_size_compat18         88
1330
1331 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg, int compat18)
1332 #else
1333 # warning "remove checksum compatibility support for b1_8"
1334 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1335 #endif
1336 {
1337         switch (msg->lm_magic) {
1338         case LUSTRE_MSG_MAGIC_V2: {
1339                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1340 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1341                 __u32 crc;
1342                 unsigned int hsize = 4;
1343                 __u32 len = compat18 ? ptlrpc_body_cksum_size_compat18 :
1344                             lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1345                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1346                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1347                                        len, NULL, 0, (unsigned char *)&crc,
1348                                        &hsize);
1349                 return crc;
1350 #else
1351 # warning "remove checksum compatibility support for b1_8"
1352                 __u32 crc;
1353                 unsigned int hsize = 4;
1354                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1355                                    lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF),
1356                                    NULL, 0, (unsigned char *)&crc, &hsize);
1357                 return crc;
1358 #endif
1359         }
1360         default:
1361                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1362                 return 0;
1363         }
1364 }
1365
1366 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1367 {
1368         switch (msg->lm_magic) {
1369         case LUSTRE_MSG_MAGIC_V2: {
1370                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1371                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1372                 pb->pb_handle = *handle;
1373                 return;
1374         }
1375         default:
1376                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1377         }
1378 }
1379 EXPORT_SYMBOL(lustre_msg_set_handle);
1380
1381 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1382 {
1383         switch (msg->lm_magic) {
1384         case LUSTRE_MSG_MAGIC_V2: {
1385                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1386                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1387                 pb->pb_type = type;
1388                 return;
1389         }
1390         default:
1391                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1392         }
1393 }
1394 EXPORT_SYMBOL(lustre_msg_set_type);
1395
1396 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1397 {
1398         switch (msg->lm_magic) {
1399         case LUSTRE_MSG_MAGIC_V2: {
1400                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1401                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1402                 pb->pb_opc = opc;
1403                 return;
1404         }
1405         default:
1406                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1407         }
1408 }
1409 EXPORT_SYMBOL(lustre_msg_set_opc);
1410
1411 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1412 {
1413         switch (msg->lm_magic) {
1414         case LUSTRE_MSG_MAGIC_V2: {
1415                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1416                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1417                 pb->pb_last_xid = last_xid;
1418                 return;
1419         }
1420         default:
1421                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1422         }
1423 }
1424 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1425
1426 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1427 {
1428         switch (msg->lm_magic) {
1429         case LUSTRE_MSG_MAGIC_V2: {
1430                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1431                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1432                 pb->pb_last_committed = last_committed;
1433                 return;
1434         }
1435         default:
1436                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1437         }
1438 }
1439 EXPORT_SYMBOL(lustre_msg_set_last_committed);
1440
1441 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1442 {
1443         switch (msg->lm_magic) {
1444         case LUSTRE_MSG_MAGIC_V1:
1445                 return;
1446         case LUSTRE_MSG_MAGIC_V2: {
1447                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1448                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1449                 pb->pb_pre_versions[0] = versions[0];
1450                 pb->pb_pre_versions[1] = versions[1];
1451                 pb->pb_pre_versions[2] = versions[2];
1452                 pb->pb_pre_versions[3] = versions[3];
1453                 return;
1454         }
1455         default:
1456                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1457         }
1458 }
1459 EXPORT_SYMBOL(lustre_msg_set_versions);
1460
1461 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1462 {
1463         switch (msg->lm_magic) {
1464         case LUSTRE_MSG_MAGIC_V2: {
1465                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1466                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1467                 pb->pb_transno = transno;
1468                 return;
1469         }
1470         default:
1471                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1472         }
1473 }
1474 EXPORT_SYMBOL(lustre_msg_set_transno);
1475
1476 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1477 {
1478         switch (msg->lm_magic) {
1479         case LUSTRE_MSG_MAGIC_V2: {
1480                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1481                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1482                 pb->pb_status = status;
1483                 return;
1484         }
1485         default:
1486                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1487         }
1488 }
1489 EXPORT_SYMBOL(lustre_msg_set_status);
1490
1491 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1492 {
1493         switch (msg->lm_magic) {
1494         case LUSTRE_MSG_MAGIC_V2: {
1495                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1496                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1497                 pb->pb_conn_cnt = conn_cnt;
1498                 return;
1499         }
1500         default:
1501                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1502         }
1503 }
1504 EXPORT_SYMBOL(lustre_msg_set_conn_cnt);
1505
1506 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1507 {
1508         switch (msg->lm_magic) {
1509         case LUSTRE_MSG_MAGIC_V1:
1510                 return;
1511         case LUSTRE_MSG_MAGIC_V2: {
1512                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1513                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1514                 pb->pb_timeout = timeout;
1515                 return;
1516         }
1517         default:
1518                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1519         }
1520 }
1521
1522 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1523 {
1524         switch (msg->lm_magic) {
1525         case LUSTRE_MSG_MAGIC_V1:
1526                 return;
1527         case LUSTRE_MSG_MAGIC_V2: {
1528                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1529                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1530                 pb->pb_service_time = service_time;
1531                 return;
1532         }
1533         default:
1534                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1535         }
1536 }
1537
1538 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1539 {
1540         switch (msg->lm_magic) {
1541         case LUSTRE_MSG_MAGIC_V1:
1542                 return;
1543         case LUSTRE_MSG_MAGIC_V2: {
1544                 __u32 opc = lustre_msg_get_opc(msg);
1545                 struct ptlrpc_body *pb;
1546
1547                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1548                  * See the comment in ptlrpc_request_pack(). */
1549                 if (!opc || opc == LDLM_BL_CALLBACK ||
1550                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1551                         return;
1552
1553                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1554                                        sizeof(struct ptlrpc_body));
1555                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1556
1557                 if (jobid != NULL)
1558                         memcpy(pb->pb_jobid, jobid, JOBSTATS_JOBID_SIZE);
1559                 else if (pb->pb_jobid[0] == '\0')
1560                         lustre_get_jobid(pb->pb_jobid);
1561                 return;
1562         }
1563         default:
1564                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1565         }
1566 }
1567 EXPORT_SYMBOL(lustre_msg_set_jobid);
1568
1569 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1570 {
1571         switch (msg->lm_magic) {
1572         case LUSTRE_MSG_MAGIC_V1:
1573                 return;
1574         case LUSTRE_MSG_MAGIC_V2:
1575                 msg->lm_cksum = cksum;
1576                 return;
1577         default:
1578                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1579         }
1580 }
1581
1582
1583 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1584 {
1585         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1586
1587         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1588                                          req->rq_pill.rc_area[RCL_SERVER]);
1589         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1590                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1591 }
1592 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1593
1594 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1595 {
1596         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1597         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1598                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1599 }
1600 EXPORT_SYMBOL(ptlrpc_req_set_repsize);
1601
1602 /**
1603  * Send a remote set_info_async.
1604  *
1605  * This may go from client to server or server to client.
1606  */
1607 int do_set_info_async(struct obd_import *imp,
1608                       int opcode, int version,
1609                       obd_count keylen, void *key,
1610                       obd_count vallen, void *val,
1611                       struct ptlrpc_request_set *set)
1612 {
1613         struct ptlrpc_request *req;
1614         char              *tmp;
1615         int                 rc;
1616         ENTRY;
1617
1618         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1619         if (req == NULL)
1620                 RETURN(-ENOMEM);
1621
1622         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1623                              RCL_CLIENT, keylen);
1624         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1625                              RCL_CLIENT, vallen);
1626         rc = ptlrpc_request_pack(req, version, opcode);
1627         if (rc) {
1628                 ptlrpc_request_free(req);
1629                 RETURN(rc);
1630         }
1631
1632         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1633         memcpy(tmp, key, keylen);
1634         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1635         memcpy(tmp, val, vallen);
1636
1637         ptlrpc_request_set_replen(req);
1638
1639         if (set) {
1640                 ptlrpc_set_add_req(set, req);
1641                 ptlrpc_check_set(NULL, set);
1642         } else {
1643                 rc = ptlrpc_queue_wait(req);
1644                 ptlrpc_req_finished(req);
1645         }
1646
1647         RETURN(rc);
1648 }
1649 EXPORT_SYMBOL(do_set_info_async);
1650
1651 /* byte flipping routines for all wire types declared in
1652  * lustre_idl.h implemented here.
1653  */
1654 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1655 {
1656         __swab32s (&b->pb_type);
1657         __swab32s (&b->pb_version);
1658         __swab32s (&b->pb_opc);
1659         __swab32s (&b->pb_status);
1660         __swab64s (&b->pb_last_xid);
1661         __swab64s (&b->pb_last_seen);
1662         __swab64s (&b->pb_last_committed);
1663         __swab64s (&b->pb_transno);
1664         __swab32s (&b->pb_flags);
1665         __swab32s (&b->pb_op_flags);
1666         __swab32s (&b->pb_conn_cnt);
1667         __swab32s (&b->pb_timeout);
1668         __swab32s (&b->pb_service_time);
1669         __swab32s (&b->pb_limit);
1670         __swab64s (&b->pb_slv);
1671         __swab64s (&b->pb_pre_versions[0]);
1672         __swab64s (&b->pb_pre_versions[1]);
1673         __swab64s (&b->pb_pre_versions[2]);
1674         __swab64s (&b->pb_pre_versions[3]);
1675         CLASSERT(offsetof(typeof(*b), pb_padding) != 0);
1676         /* While we need to maintain compatibility between
1677          * clients and servers without ptlrpc_body_v2 (< 2.3)
1678          * do not swab any fields beyond pb_jobid, as we are
1679          * using this swab function for both ptlrpc_body
1680          * and ptlrpc_body_v2. */
1681         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1682 }
1683 EXPORT_SYMBOL(lustre_swab_ptlrpc_body);
1684
1685 void lustre_swab_connect(struct obd_connect_data *ocd)
1686 {
1687         __swab64s(&ocd->ocd_connect_flags);
1688         __swab32s(&ocd->ocd_version);
1689         __swab32s(&ocd->ocd_grant);
1690         __swab64s(&ocd->ocd_ibits_known);
1691         __swab32s(&ocd->ocd_index);
1692         __swab32s(&ocd->ocd_brw_size);
1693         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1694          * they are 8-byte values */
1695         __swab16s(&ocd->ocd_grant_extent);
1696         __swab32s(&ocd->ocd_unused);
1697         __swab64s(&ocd->ocd_transno);
1698         __swab32s(&ocd->ocd_group);
1699         __swab32s(&ocd->ocd_cksum_types);
1700         __swab32s(&ocd->ocd_instance);
1701         /* Fields after ocd_cksum_types are only accessible by the receiver
1702          * if the corresponding flag in ocd_connect_flags is set. Accessing
1703          * any field after ocd_maxbytes on the receiver without a valid flag
1704          * may result in out-of-bound memory access and kernel oops. */
1705         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1706                 __swab32s(&ocd->ocd_max_easize);
1707         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1708                 __swab64s(&ocd->ocd_maxbytes);
1709         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1710         CLASSERT(offsetof(typeof(*ocd), padding2) != 0);
1711         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1712         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1713         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1714         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1715         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1716         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1717         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1718         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1719         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1720         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1721         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1722         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1723         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1724 }
1725
1726 void lustre_swab_obdo (struct obdo  *o)
1727 {
1728         __swab64s (&o->o_valid);
1729         lustre_swab_ost_id(&o->o_oi);
1730         __swab64s (&o->o_parent_seq);
1731         __swab64s (&o->o_size);
1732         __swab64s (&o->o_mtime);
1733         __swab64s (&o->o_atime);
1734         __swab64s (&o->o_ctime);
1735         __swab64s (&o->o_blocks);
1736         __swab64s (&o->o_grant);
1737         __swab32s (&o->o_blksize);
1738         __swab32s (&o->o_mode);
1739         __swab32s (&o->o_uid);
1740         __swab32s (&o->o_gid);
1741         __swab32s (&o->o_flags);
1742         __swab32s (&o->o_nlink);
1743         __swab32s (&o->o_parent_oid);
1744         __swab32s (&o->o_misc);
1745         __swab64s (&o->o_ioepoch);
1746         __swab32s (&o->o_stripe_idx);
1747         __swab32s (&o->o_parent_ver);
1748         /* o_handle is opaque */
1749         /* o_lcookie is swabbed elsewhere */
1750         __swab32s (&o->o_uid_h);
1751         __swab32s (&o->o_gid_h);
1752         __swab64s (&o->o_data_version);
1753         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1754         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1755         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1756
1757 }
1758 EXPORT_SYMBOL(lustre_swab_obdo);
1759
1760 void lustre_swab_obd_statfs (struct obd_statfs *os)
1761 {
1762         __swab64s (&os->os_type);
1763         __swab64s (&os->os_blocks);
1764         __swab64s (&os->os_bfree);
1765         __swab64s (&os->os_bavail);
1766         __swab64s (&os->os_files);
1767         __swab64s (&os->os_ffree);
1768         /* no need to swab os_fsid */
1769         __swab32s (&os->os_bsize);
1770         __swab32s (&os->os_namelen);
1771         __swab64s (&os->os_maxbytes);
1772         __swab32s (&os->os_state);
1773         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1774         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1775         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1776         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1777         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1778         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1779         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1780         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1781         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1782 }
1783 EXPORT_SYMBOL(lustre_swab_obd_statfs);
1784
1785 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1786 {
1787         lustre_swab_ost_id(&ioo->ioo_oid);
1788         __swab32s(&ioo->ioo_max_brw);
1789         __swab32s(&ioo->ioo_bufcnt);
1790 }
1791 EXPORT_SYMBOL(lustre_swab_obd_ioobj);
1792
1793 void lustre_swab_niobuf_remote (struct niobuf_remote *nbr)
1794 {
1795         __swab64s (&nbr->offset);
1796         __swab32s (&nbr->len);
1797         __swab32s (&nbr->flags);
1798 }
1799 EXPORT_SYMBOL(lustre_swab_niobuf_remote);
1800
1801 void lustre_swab_ost_body (struct ost_body *b)
1802 {
1803         lustre_swab_obdo (&b->oa);
1804 }
1805 EXPORT_SYMBOL(lustre_swab_ost_body);
1806
1807 void lustre_swab_ost_last_id(obd_id *id)
1808 {
1809         __swab64s(id);
1810 }
1811 EXPORT_SYMBOL(lustre_swab_ost_last_id);
1812
1813 void lustre_swab_generic_32s(__u32 *val)
1814 {
1815         __swab32s(val);
1816 }
1817 EXPORT_SYMBOL(lustre_swab_generic_32s);
1818
1819 void lustre_swab_gl_desc(union ldlm_gl_desc *desc)
1820 {
1821         lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid);
1822         __swab64s(&desc->lquota_desc.gl_flags);
1823         __swab64s(&desc->lquota_desc.gl_ver);
1824         __swab64s(&desc->lquota_desc.gl_hardlimit);
1825         __swab64s(&desc->lquota_desc.gl_softlimit);
1826         __swab64s(&desc->lquota_desc.gl_time);
1827         CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0);
1828 }
1829
1830 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1831 {
1832         __swab64s(&lvb->lvb_size);
1833         __swab64s(&lvb->lvb_mtime);
1834         __swab64s(&lvb->lvb_atime);
1835         __swab64s(&lvb->lvb_ctime);
1836         __swab64s(&lvb->lvb_blocks);
1837 }
1838 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1839
1840 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1841 {
1842         __swab64s(&lvb->lvb_size);
1843         __swab64s(&lvb->lvb_mtime);
1844         __swab64s(&lvb->lvb_atime);
1845         __swab64s(&lvb->lvb_ctime);
1846         __swab64s(&lvb->lvb_blocks);
1847         __swab32s(&lvb->lvb_mtime_ns);
1848         __swab32s(&lvb->lvb_atime_ns);
1849         __swab32s(&lvb->lvb_ctime_ns);
1850         __swab32s(&lvb->lvb_padding);
1851 }
1852 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1853
1854 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1855 {
1856         __swab64s(&lvb->lvb_flags);
1857         __swab64s(&lvb->lvb_id_may_rel);
1858         __swab64s(&lvb->lvb_id_rel);
1859         __swab64s(&lvb->lvb_id_qunit);
1860         __swab64s(&lvb->lvb_pad1);
1861 }
1862 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1863
1864 void lustre_swab_mdt_body (struct mdt_body *b)
1865 {
1866         lustre_swab_lu_fid (&b->fid1);
1867         lustre_swab_lu_fid (&b->fid2);
1868         /* handle is opaque */
1869         __swab64s (&b->valid);
1870         __swab64s (&b->size);
1871         __swab64s (&b->mtime);
1872         __swab64s (&b->atime);
1873         __swab64s (&b->ctime);
1874         __swab64s (&b->blocks);
1875         __swab64s (&b->ioepoch);
1876         CLASSERT(offsetof(typeof(*b), unused1) != 0);
1877         __swab32s (&b->fsuid);
1878         __swab32s (&b->fsgid);
1879         __swab32s (&b->capability);
1880         __swab32s (&b->mode);
1881         __swab32s (&b->uid);
1882         __swab32s (&b->gid);
1883         __swab32s (&b->flags);
1884         __swab32s (&b->rdev);
1885         __swab32s (&b->nlink);
1886         CLASSERT(offsetof(typeof(*b), unused2) != 0);
1887         __swab32s (&b->suppgid);
1888         __swab32s (&b->eadatasize);
1889         __swab32s (&b->aclsize);
1890         __swab32s (&b->max_mdsize);
1891         __swab32s (&b->max_cookiesize);
1892         __swab32s (&b->uid_h);
1893         __swab32s (&b->gid_h);
1894         CLASSERT(offsetof(typeof(*b), padding_5) != 0);
1895 }
1896 EXPORT_SYMBOL(lustre_swab_mdt_body);
1897
1898 void lustre_swab_mdt_ioepoch (struct mdt_ioepoch *b)
1899 {
1900         /* handle is opaque */
1901          __swab64s (&b->ioepoch);
1902          __swab32s (&b->flags);
1903          CLASSERT(offsetof(typeof(*b), padding) != 0);
1904 }
1905 EXPORT_SYMBOL(lustre_swab_mdt_ioepoch);
1906
1907 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1908 {
1909         int i;
1910         __swab32s(&mti->mti_lustre_ver);
1911         __swab32s(&mti->mti_stripe_index);
1912         __swab32s(&mti->mti_config_ver);
1913         __swab32s(&mti->mti_flags);
1914         __swab32s(&mti->mti_instance);
1915         __swab32s(&mti->mti_nid_count);
1916         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1917         for (i = 0; i < MTI_NIDS_MAX; i++)
1918                 __swab64s(&mti->mti_nids[i]);
1919 }
1920 EXPORT_SYMBOL(lustre_swab_mgs_target_info);
1921
1922 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1923 {
1924         int i;
1925
1926         __swab64s(&entry->mne_version);
1927         __swab32s(&entry->mne_instance);
1928         __swab32s(&entry->mne_index);
1929         __swab32s(&entry->mne_length);
1930
1931         /* mne_nid_(count|type) must be one byte size because we're gonna
1932          * access it w/o swapping. */
1933         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1934         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1935
1936         /* remove this assertion if ipv6 is supported. */
1937         LASSERT(entry->mne_nid_type == 0);
1938         for (i = 0; i < entry->mne_nid_count; i++) {
1939                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1940                 __swab64s(&entry->u.nids[i]);
1941         }
1942 }
1943 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1944
1945 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1946 {
1947         __swab64s(&body->mcb_offset);
1948         __swab32s(&body->mcb_units);
1949         __swab16s(&body->mcb_type);
1950 }
1951 EXPORT_SYMBOL(lustre_swab_mgs_config_body);
1952
1953 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1954 {
1955         __swab64s(&body->mcr_offset);
1956         __swab64s(&body->mcr_size);
1957 }
1958 EXPORT_SYMBOL(lustre_swab_mgs_config_res);
1959
1960 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1961 {
1962         __swab64s (&i->dqi_bgrace);
1963         __swab64s (&i->dqi_igrace);
1964         __swab32s (&i->dqi_flags);
1965         __swab32s (&i->dqi_valid);
1966 }
1967
1968 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1969 {
1970         __swab64s (&b->dqb_ihardlimit);
1971         __swab64s (&b->dqb_isoftlimit);
1972         __swab64s (&b->dqb_curinodes);
1973         __swab64s (&b->dqb_bhardlimit);
1974         __swab64s (&b->dqb_bsoftlimit);
1975         __swab64s (&b->dqb_curspace);
1976         __swab64s (&b->dqb_btime);
1977         __swab64s (&b->dqb_itime);
1978         __swab32s (&b->dqb_valid);
1979         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1980 }
1981
1982 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1983 {
1984         __swab32s (&q->qc_cmd);
1985         __swab32s (&q->qc_type);
1986         __swab32s (&q->qc_id);
1987         __swab32s (&q->qc_stat);
1988         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1989         lustre_swab_obd_dqblk (&q->qc_dqblk);
1990 }
1991 EXPORT_SYMBOL(lustre_swab_obd_quotactl);
1992
1993 void lustre_swab_mdt_remote_perm (struct mdt_remote_perm *p)
1994 {
1995         __swab32s (&p->rp_uid);
1996         __swab32s (&p->rp_gid);
1997         __swab32s (&p->rp_fsuid);
1998         __swab32s (&p->rp_fsuid_h);
1999         __swab32s (&p->rp_fsgid);
2000         __swab32s (&p->rp_fsgid_h);
2001         __swab32s (&p->rp_access_perm);
2002         __swab32s (&p->rp_padding);
2003 };
2004 EXPORT_SYMBOL(lustre_swab_mdt_remote_perm);
2005
2006 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2007 {
2008         lustre_swab_lu_fid(&gf->gf_fid);
2009         __swab64s(&gf->gf_recno);
2010         __swab32s(&gf->gf_linkno);
2011         __swab32s(&gf->gf_pathlen);
2012 }
2013 EXPORT_SYMBOL(lustre_swab_fid2path);
2014
2015 void lustre_swab_fiemap_extent(struct ll_fiemap_extent *fm_extent)
2016 {
2017         __swab64s(&fm_extent->fe_logical);
2018         __swab64s(&fm_extent->fe_physical);
2019         __swab64s(&fm_extent->fe_length);
2020         __swab32s(&fm_extent->fe_flags);
2021         __swab32s(&fm_extent->fe_device);
2022 }
2023
2024 void lustre_swab_fiemap(struct ll_user_fiemap *fiemap)
2025 {
2026         int i;
2027
2028         __swab64s(&fiemap->fm_start);
2029         __swab64s(&fiemap->fm_length);
2030         __swab32s(&fiemap->fm_flags);
2031         __swab32s(&fiemap->fm_mapped_extents);
2032         __swab32s(&fiemap->fm_extent_count);
2033         __swab32s(&fiemap->fm_reserved);
2034
2035         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2036                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2037 }
2038 EXPORT_SYMBOL(lustre_swab_fiemap);
2039
2040 void lustre_swab_idx_info(struct idx_info *ii)
2041 {
2042         __swab32s(&ii->ii_magic);
2043         __swab32s(&ii->ii_flags);
2044         __swab16s(&ii->ii_count);
2045         __swab32s(&ii->ii_attrs);
2046         lustre_swab_lu_fid(&ii->ii_fid);
2047         __swab64s(&ii->ii_version);
2048         __swab64s(&ii->ii_hash_start);
2049         __swab64s(&ii->ii_hash_end);
2050         __swab16s(&ii->ii_keysize);
2051         __swab16s(&ii->ii_recsize);
2052 }
2053
2054 void lustre_swab_lip_header(struct lu_idxpage *lip)
2055 {
2056         /* swab header */
2057         __swab32s(&lip->lip_magic);
2058         __swab16s(&lip->lip_flags);
2059         __swab16s(&lip->lip_nr);
2060 }
2061 EXPORT_SYMBOL(lustre_swab_lip_header);
2062
2063 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2064 {
2065         __swab32s(&rr->rr_opcode);
2066         __swab32s(&rr->rr_cap);
2067         __swab32s(&rr->rr_fsuid);
2068         /* rr_fsuid_h is unused */
2069         __swab32s(&rr->rr_fsgid);
2070         /* rr_fsgid_h is unused */
2071         __swab32s(&rr->rr_suppgid1);
2072         /* rr_suppgid1_h is unused */
2073         __swab32s(&rr->rr_suppgid2);
2074         /* rr_suppgid2_h is unused */
2075         lustre_swab_lu_fid(&rr->rr_fid1);
2076         lustre_swab_lu_fid(&rr->rr_fid2);
2077         __swab64s(&rr->rr_mtime);
2078         __swab64s(&rr->rr_atime);
2079         __swab64s(&rr->rr_ctime);
2080         __swab64s(&rr->rr_size);
2081         __swab64s(&rr->rr_blocks);
2082         __swab32s(&rr->rr_bias);
2083         __swab32s(&rr->rr_mode);
2084         __swab32s(&rr->rr_flags);
2085         __swab32s(&rr->rr_flags_h);
2086         __swab32s(&rr->rr_umask);
2087
2088         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2089 };
2090 EXPORT_SYMBOL(lustre_swab_mdt_rec_reint);
2091
2092 void lustre_swab_lov_desc (struct lov_desc *ld)
2093 {
2094         __swab32s (&ld->ld_tgt_count);
2095         __swab32s (&ld->ld_active_tgt_count);
2096         __swab32s (&ld->ld_default_stripe_count);
2097         __swab32s (&ld->ld_pattern);
2098         __swab64s (&ld->ld_default_stripe_size);
2099         __swab64s (&ld->ld_default_stripe_offset);
2100         __swab32s (&ld->ld_qos_maxage);
2101         /* uuid endian insensitive */
2102 }
2103 EXPORT_SYMBOL(lustre_swab_lov_desc);
2104
2105 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2106 {
2107         __swab32s (&ld->ld_tgt_count);
2108         __swab32s (&ld->ld_active_tgt_count);
2109         __swab32s (&ld->ld_default_stripe_count);
2110         __swab32s (&ld->ld_pattern);
2111         __swab64s (&ld->ld_default_hash_size);
2112         __swab32s (&ld->ld_qos_maxage);
2113         /* uuid endian insensitive */
2114 }
2115
2116 void lustre_swab_lmv_stripe_md (struct lmv_stripe_md *mea)
2117 {
2118         __swab32s(&mea->mea_magic);
2119         __swab32s(&mea->mea_count);
2120         __swab32s(&mea->mea_master);
2121         CLASSERT(offsetof(typeof(*mea), mea_padding) != 0);
2122 }
2123
2124 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2125 {
2126         int i;
2127
2128         __swab32s(&lum->lum_magic);
2129         __swab32s(&lum->lum_stripe_count);
2130         __swab32s(&lum->lum_stripe_offset);
2131         __swab32s(&lum->lum_hash_type);
2132         __swab32s(&lum->lum_type);
2133         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2134         CLASSERT(offsetof(typeof(*lum), lum_padding2) != 0);
2135         CLASSERT(offsetof(typeof(*lum), lum_padding3) != 0);
2136
2137         for (i = 0; i < lum->lum_stripe_count; i++) {
2138                 __swab32s(&lum->lum_objects[i].lum_mds);
2139                 lustre_swab_lu_fid(&lum->lum_objects[i].lum_fid);
2140         }
2141
2142 }
2143 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2144
2145 static void print_lum (struct lov_user_md *lum)
2146 {
2147         CDEBUG(D_OTHER, "lov_user_md %p:\n", lum);
2148         CDEBUG(D_OTHER, "\tlmm_magic: %#x\n", lum->lmm_magic);
2149         CDEBUG(D_OTHER, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2150         CDEBUG(D_OTHER, "\tlmm_object_id: "LPU64"\n", lmm_oi_id(&lum->lmm_oi));
2151         CDEBUG(D_OTHER, "\tlmm_object_gr: "LPU64"\n", lmm_oi_seq(&lum->lmm_oi));
2152         CDEBUG(D_OTHER, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2153         CDEBUG(D_OTHER, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2154         CDEBUG(D_OTHER, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2155                         lum->lmm_stripe_offset);
2156 }
2157
2158 static void lustre_swab_lmm_oi(struct ost_id *oi)
2159 {
2160         __swab64s(&oi->oi.oi_id);
2161         __swab64s(&oi->oi.oi_seq);
2162 }
2163
2164 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2165 {
2166         ENTRY;
2167         __swab32s(&lum->lmm_magic);
2168         __swab32s(&lum->lmm_pattern);
2169         lustre_swab_lmm_oi(&lum->lmm_oi);
2170         __swab32s(&lum->lmm_stripe_size);
2171         __swab16s(&lum->lmm_stripe_count);
2172         __swab16s(&lum->lmm_stripe_offset);
2173         print_lum(lum);
2174         EXIT;
2175 }
2176
2177 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2178 {
2179         ENTRY;
2180         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2181         lustre_swab_lov_user_md_common(lum);
2182         EXIT;
2183 }
2184 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2185
2186 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2187 {
2188         ENTRY;
2189         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2190         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2191         /* lmm_pool_name nothing to do with char */
2192         EXIT;
2193 }
2194 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2195
2196 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2197 {
2198         ENTRY;
2199         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2200         __swab32s(&lmm->lmm_magic);
2201         __swab32s(&lmm->lmm_pattern);
2202         lustre_swab_lmm_oi(&lmm->lmm_oi);
2203         __swab32s(&lmm->lmm_stripe_size);
2204         __swab16s(&lmm->lmm_stripe_count);
2205         __swab16s(&lmm->lmm_layout_gen);
2206         EXIT;
2207 }
2208 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2209
2210 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2211                                      int stripe_count)
2212 {
2213         int i;
2214         ENTRY;
2215         for (i = 0; i < stripe_count; i++) {
2216                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2217                 __swab32s(&(lod[i].l_ost_gen));
2218                 __swab32s(&(lod[i].l_ost_idx));
2219         }
2220         EXIT;
2221 }
2222 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2223
2224 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2225 {
2226         int  i;
2227
2228         for (i = 0; i < RES_NAME_SIZE; i++)
2229                 __swab64s (&id->name[i]);
2230 }
2231 EXPORT_SYMBOL(lustre_swab_ldlm_res_id);
2232
2233 void lustre_swab_ldlm_policy_data (ldlm_wire_policy_data_t *d)
2234 {
2235         /* the lock data is a union and the first two fields are always an
2236          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2237          * data the same way. */
2238         __swab64s(&d->l_extent.start);
2239         __swab64s(&d->l_extent.end);
2240         __swab64s(&d->l_extent.gid);
2241         __swab64s(&d->l_flock.lfw_owner);
2242         __swab32s(&d->l_flock.lfw_pid);
2243 }
2244 EXPORT_SYMBOL(lustre_swab_ldlm_policy_data);
2245
2246 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2247 {
2248         __swab64s (&i->opc);
2249 }
2250 EXPORT_SYMBOL(lustre_swab_ldlm_intent);
2251
2252 void lustre_swab_ldlm_resource_desc (struct ldlm_resource_desc *r)
2253 {
2254         __swab32s (&r->lr_type);
2255         CLASSERT(offsetof(typeof(*r), lr_padding) != 0);
2256         lustre_swab_ldlm_res_id (&r->lr_name);
2257 }
2258 EXPORT_SYMBOL(lustre_swab_ldlm_resource_desc);
2259
2260 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2261 {
2262         lustre_swab_ldlm_resource_desc (&l->l_resource);
2263         __swab32s (&l->l_req_mode);
2264         __swab32s (&l->l_granted_mode);
2265         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2266 }
2267 EXPORT_SYMBOL(lustre_swab_ldlm_lock_desc);
2268
2269 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2270 {
2271         __swab32s (&rq->lock_flags);
2272         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2273         __swab32s (&rq->lock_count);
2274         /* lock_handle[] opaque */
2275 }
2276 EXPORT_SYMBOL(lustre_swab_ldlm_request);
2277
2278 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2279 {
2280         __swab32s (&r->lock_flags);
2281         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2282         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2283         /* lock_handle opaque */
2284         __swab64s (&r->lock_policy_res1);
2285         __swab64s (&r->lock_policy_res2);
2286 }
2287 EXPORT_SYMBOL(lustre_swab_ldlm_reply);
2288
2289 void lustre_swab_quota_body(struct quota_body *b)
2290 {
2291         lustre_swab_lu_fid(&b->qb_fid);
2292         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2293         __swab32s(&b->qb_flags);
2294         __swab64s(&b->qb_count);
2295         __swab64s(&b->qb_usage);
2296         __swab64s(&b->qb_slv_ver);
2297 }
2298
2299 /* Dump functions */
2300 void dump_ioo(struct obd_ioobj *ioo)
2301 {
2302         CDEBUG(D_RPCTRACE,
2303                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2304                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2305                ioo->ioo_bufcnt);
2306 }
2307 EXPORT_SYMBOL(dump_ioo);
2308
2309 void dump_rniobuf(struct niobuf_remote *nb)
2310 {
2311         CDEBUG(D_RPCTRACE, "niobuf_remote: offset="LPU64", len=%d, flags=%x\n",
2312                nb->offset, nb->len, nb->flags);
2313 }
2314 EXPORT_SYMBOL(dump_rniobuf);
2315
2316 void dump_obdo(struct obdo *oa)
2317 {
2318         __u32 valid = oa->o_valid;
2319
2320         CDEBUG(D_RPCTRACE, "obdo: o_valid = %08x\n", valid);
2321         if (valid & OBD_MD_FLID)
2322                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2323         if (valid & OBD_MD_FLFID)
2324                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = "LPX64"\n",
2325                        oa->o_parent_seq);
2326         if (valid & OBD_MD_FLSIZE)
2327                 CDEBUG(D_RPCTRACE, "obdo: o_size = "LPD64"\n", oa->o_size);
2328         if (valid & OBD_MD_FLMTIME)
2329                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = "LPD64"\n", oa->o_mtime);
2330         if (valid & OBD_MD_FLATIME)
2331                 CDEBUG(D_RPCTRACE, "obdo: o_atime = "LPD64"\n", oa->o_atime);
2332         if (valid & OBD_MD_FLCTIME)
2333                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = "LPD64"\n", oa->o_ctime);
2334         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2335                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = "LPD64"\n", oa->o_blocks);
2336         if (valid & OBD_MD_FLGRANT)
2337                 CDEBUG(D_RPCTRACE, "obdo: o_grant = "LPD64"\n", oa->o_grant);
2338         if (valid & OBD_MD_FLBLKSZ)
2339                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2340         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2341                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2342                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2343                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2344         if (valid & OBD_MD_FLUID)
2345                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2346         if (valid & OBD_MD_FLUID)
2347                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2348         if (valid & OBD_MD_FLGID)
2349                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2350         if (valid & OBD_MD_FLGID)
2351                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2352         if (valid & OBD_MD_FLFLAGS)
2353                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2354         if (valid & OBD_MD_FLNLINK)
2355                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2356         else if (valid & OBD_MD_FLCKSUM)
2357                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2358                        oa->o_nlink);
2359         if (valid & OBD_MD_FLGENER)
2360                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2361                        oa->o_parent_oid);
2362         if (valid & OBD_MD_FLEPOCH)
2363                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = "LPD64"\n",
2364                        oa->o_ioepoch);
2365         if (valid & OBD_MD_FLFID) {
2366                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2367                        oa->o_stripe_idx);
2368                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2369                        oa->o_parent_ver);
2370         }
2371         if (valid & OBD_MD_FLHANDLE)
2372                 CDEBUG(D_RPCTRACE, "obdo: o_handle = "LPD64"\n",
2373                        oa->o_handle.cookie);
2374         if (valid & OBD_MD_FLCOOKIE)
2375                 CDEBUG(D_RPCTRACE, "obdo: o_lcookie = "
2376                        "(llog_cookie dumping not yet implemented)\n");
2377 }
2378 EXPORT_SYMBOL(dump_obdo);
2379
2380 void dump_ost_body(struct ost_body *ob)
2381 {
2382         dump_obdo(&ob->oa);
2383 }
2384 EXPORT_SYMBOL(dump_ost_body);
2385
2386 void dump_rcs(__u32 *rc)
2387 {
2388         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2389 }
2390 EXPORT_SYMBOL(dump_rcs);
2391
2392 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2393 {
2394         LASSERT(req->rq_reqmsg);
2395
2396         switch (req->rq_reqmsg->lm_magic) {
2397         case LUSTRE_MSG_MAGIC_V2:
2398                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2399         default:
2400                 CERROR("bad lustre msg magic: %#08X\n",
2401                        req->rq_reqmsg->lm_magic);
2402         }
2403         return 0;
2404 }
2405
2406 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2407 {
2408         LASSERT(req->rq_repmsg);
2409
2410         switch (req->rq_repmsg->lm_magic) {
2411         case LUSTRE_MSG_MAGIC_V2:
2412                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2413         default:
2414                 /* uninitialized yet */
2415                 return 0;
2416         }
2417 }
2418
2419 void _debug_req(struct ptlrpc_request *req,
2420                 struct libcfs_debug_msg_data *msgdata,
2421                 const char *fmt, ... )
2422 {
2423         int req_ok = req->rq_reqmsg != NULL;
2424         int rep_ok = req->rq_repmsg != NULL;
2425         lnet_nid_t nid = LNET_NID_ANY;
2426         va_list args;
2427
2428         if (ptlrpc_req_need_swab(req)) {
2429                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2430                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2431         }
2432
2433         if (req->rq_import && req->rq_import->imp_connection)
2434                 nid = req->rq_import->imp_connection->c_peer.nid;
2435         else if (req->rq_export && req->rq_export->exp_connection)
2436                 nid = req->rq_export->exp_connection->c_peer.nid;
2437
2438         va_start(args, fmt);
2439         libcfs_debug_vmsg2(msgdata, fmt, args,
2440                            " req@%p x"LPU64"/t"LPD64"("LPD64") o%d->%s@%s:%d/%d"
2441                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2442                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2443                            req, req->rq_xid, req->rq_transno,
2444                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2445                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2446                            req->rq_import ?
2447                                 req->rq_import->imp_obd->obd_name :
2448                                 req->rq_export ?
2449                                      req->rq_export->exp_client_uuid.uuid :
2450                                      "<?>",
2451                            libcfs_nid2str(nid),
2452                            req->rq_request_portal, req->rq_reply_portal,
2453                            req->rq_reqlen, req->rq_replen,
2454                            req->rq_early_count, req->rq_timedout,
2455                            req->rq_deadline,
2456                            atomic_read(&req->rq_refcount),
2457                            DEBUG_REQ_FLAGS(req),
2458                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2459                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2460                            req->rq_status,
2461                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2462 }
2463 EXPORT_SYMBOL(_debug_req);
2464
2465 void lustre_swab_lustre_capa(struct lustre_capa *c)
2466 {
2467         lustre_swab_lu_fid(&c->lc_fid);
2468         __swab64s (&c->lc_opc);
2469         __swab64s (&c->lc_uid);
2470         __swab64s (&c->lc_gid);
2471         __swab32s (&c->lc_flags);
2472         __swab32s (&c->lc_keyid);
2473         __swab32s (&c->lc_timeout);
2474         __swab32s (&c->lc_expiry);
2475 }
2476 EXPORT_SYMBOL(lustre_swab_lustre_capa);
2477
2478 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2479 {
2480         __swab64s (&k->lk_seq);
2481         __swab32s (&k->lk_keyid);
2482         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2483 }
2484 EXPORT_SYMBOL(lustre_swab_lustre_capa_key);
2485
2486 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2487 {
2488         __swab32s(&state->hus_states);
2489         __swab32s(&state->hus_archive_id);
2490 }
2491 EXPORT_SYMBOL(lustre_swab_hsm_user_state);
2492
2493 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2494 {
2495         __swab32s(&hss->hss_valid);
2496         __swab64s(&hss->hss_setmask);
2497         __swab64s(&hss->hss_clearmask);
2498         __swab32s(&hss->hss_archive_id);
2499 }
2500 EXPORT_SYMBOL(lustre_swab_hsm_state_set);
2501
2502 void lustre_swab_hsm_extent(struct hsm_extent *extent)
2503 {
2504         __swab64s(&extent->offset);
2505         __swab64s(&extent->length);
2506 }
2507
2508 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2509 {
2510         __swab32s(&action->hca_state);
2511         __swab32s(&action->hca_action);
2512         lustre_swab_hsm_extent(&action->hca_location);
2513 }
2514 EXPORT_SYMBOL(lustre_swab_hsm_current_action);
2515
2516 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2517 {
2518         lustre_swab_lu_fid(&hui->hui_fid);
2519         lustre_swab_hsm_extent(&hui->hui_extent);
2520 }
2521 EXPORT_SYMBOL(lustre_swab_hsm_user_item);
2522
2523 void lustre_swab_layout_intent(struct layout_intent *li)
2524 {
2525         __swab32s(&li->li_opc);
2526         __swab32s(&li->li_flags);
2527         __swab64s(&li->li_start);
2528         __swab64s(&li->li_end);
2529 }
2530 EXPORT_SYMBOL(lustre_swab_layout_intent);
2531
2532 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2533 {
2534         lustre_swab_lu_fid(&hpk->hpk_fid);
2535         __swab64s(&hpk->hpk_cookie);
2536         __swab64s(&hpk->hpk_extent.offset);
2537         __swab64s(&hpk->hpk_extent.length);
2538         __swab16s(&hpk->hpk_flags);
2539         __swab16s(&hpk->hpk_errval);
2540 }
2541 EXPORT_SYMBOL(lustre_swab_hsm_progress_kernel);
2542
2543 void lustre_swab_hsm_request(struct hsm_request *hr)
2544 {
2545         __swab32s(&hr->hr_action);
2546         __swab32s(&hr->hr_archive_id);
2547         __swab64s(&hr->hr_flags);
2548         __swab32s(&hr->hr_itemcount);
2549         __swab32s(&hr->hr_data_len);
2550 }
2551 EXPORT_SYMBOL(lustre_swab_hsm_request);
2552
2553 void lustre_swab_update_buf(struct update_buf *ub)
2554 {
2555         __swab32s(&ub->ub_magic);
2556         __swab32s(&ub->ub_count);
2557 }
2558 EXPORT_SYMBOL(lustre_swab_update_buf);
2559
2560 void lustre_swab_update_reply_buf(struct update_reply *ur)
2561 {
2562         int i;
2563
2564         __swab32s(&ur->ur_version);
2565         __swab32s(&ur->ur_count);
2566         for (i = 0; i < ur->ur_count; i++)
2567                 __swab32s(&ur->ur_lens[i]);
2568 }
2569 EXPORT_SYMBOL(lustre_swab_update_reply_buf);
2570
2571 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2572 {
2573         __swab64s(&msl->msl_flags);
2574 }
2575 EXPORT_SYMBOL(lustre_swab_swap_layouts);