lustre/ptlrpc/pack_generic.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/ptlrpc/pack_generic.c
  37  *
  38  * (Un)packing of OST requests
  39  *
  40  * Author: Peter J. Braam <braam@clusterfs.com>
  41  * Author: Phil Schwan <phil@clusterfs.com>
  42  * Author: Eric Barton <eeb@clusterfs.com>
  43  */
  44
  45 #define DEBUG_SUBSYSTEM S_RPC
  46 #ifndef __KERNEL__
  47 # include <liblustre.h>
  48 #endif
  49
  50 #include <libcfs/libcfs.h>
  51
  52 #include <obd_support.h>
  53 #include <obd_class.h>
  54 #include <lustre_net.h>
  55 #include <obd_cksum.h>
  56 #include <lustre/ll_fiemap.h>
  57 #include <lustre_update.h>
  58
  59 static inline int lustre_msg_hdr_size_v2(int count)
  60 {
  61         return cfs_size_round(offsetof(struct lustre_msg_v2,
  62                                        lm_buflens[count]));
  63 }
  64
  65 int lustre_msg_hdr_size(__u32 magic, int count)
  66 {
  67         switch (magic) {
  68         case LUSTRE_MSG_MAGIC_V2:
  69                 return lustre_msg_hdr_size_v2(count);
  70         default:
  71                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  72                 return -EINVAL;
  73         }
  74 }
  75 EXPORT_SYMBOL(lustre_msg_hdr_size);
  76
  77 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  78                             int index)
  79 {
  80         if (inout)
  81                 lustre_set_req_swabbed(req, index);
  82         else
  83                 lustre_set_rep_swabbed(req, index);
  84 }
  85 EXPORT_SYMBOL(ptlrpc_buf_set_swabbed);
  86
  87 int ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  88                          int index)
  89 {
  90         if (inout)
  91                 return (ptlrpc_req_need_swab(req) &&
  92                         !lustre_req_swabbed(req, index));
  93         else
  94                 return (ptlrpc_rep_need_swab(req) &&
  95                         !lustre_rep_swabbed(req, index));
  96 }
  97 EXPORT_SYMBOL(ptlrpc_buf_need_swab);
  98
  99 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
 100                                               __u32 version)
 101 {
 102         __u32 ver = lustre_msg_get_version(msg);
 103         return (ver & LUSTRE_VERSION_MASK) != version;
 104 }
 105
 106 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version)
 107 {
 108         switch (msg->lm_magic) {
 109         case LUSTRE_MSG_MAGIC_V1:
 110                 CERROR("msg v1 not supported - please upgrade you system\n");
 111                 return -EINVAL;
 112         case LUSTRE_MSG_MAGIC_V2:
 113                 return lustre_msg_check_version_v2(msg, version);
 114         default:
 115                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 116                 return 0;
 117         }
 118 }
 119 EXPORT_SYMBOL(lustre_msg_check_version);
 120
 121 /* early reply size */
 122 int lustre_msg_early_size()
 123 {
 124         static int size = 0;
 125         if (!size) {
 126                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 127                  * with the old client (< 2.3) which doesn't have pb_jobid
 128                  * in the ptlrpc_body.
 129                  *
 130                  * XXX Remove this whenever we dorp interoprability with such
 131                  *     client.
 132                  */
 133                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 134                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 135         }
 136         return size;
 137 }
 138 EXPORT_SYMBOL(lustre_msg_early_size);
 139
 140 int lustre_msg_size_v2(int count, __u32 *lengths)
 141 {
 142         int size;
 143         int i;
 144
 145         size = lustre_msg_hdr_size_v2(count);
 146         for (i = 0; i < count; i++)
 147                 size += cfs_size_round(lengths[i]);
 148
 149         return size;
 150 }
 151 EXPORT_SYMBOL(lustre_msg_size_v2);
 152
 153 /* This returns the size of the buffer that is required to hold a lustre_msg
 154  * with the given sub-buffer lengths.
 155  * NOTE: this should only be used for NEW requests, and should always be
 156  *       in the form of a v2 request.  If this is a connection to a v1
 157  *       target then the first buffer will be stripped because the ptlrpc
 158  *       data is part of the lustre_msg_v1 header. b=14043 */
 159 int lustre_msg_size(__u32 magic, int count, __u32 *lens)
 160 {
 161         __u32 size[] = { sizeof(struct ptlrpc_body) };
 162
 163         if (!lens) {
 164                 LASSERT(count == 1);
 165                 lens = size;
 166         }
 167
 168         LASSERT(count > 0);
 169         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 170
 171         switch (magic) {
 172         case LUSTRE_MSG_MAGIC_V2:
 173                 return lustre_msg_size_v2(count, lens);
 174         default:
 175                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 176                 return -EINVAL;
 177         }
 178 }
 179 EXPORT_SYMBOL(lustre_msg_size);
 180
 181 /* This is used to determine the size of a buffer that was already packed
 182  * and will correctly handle the different message formats. */
 183 int lustre_packed_msg_size(struct lustre_msg *msg)
 184 {
 185         switch (msg->lm_magic) {
 186         case LUSTRE_MSG_MAGIC_V2:
 187                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 188         default:
 189                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 190                 return 0;
 191         }
 192 }
 193 EXPORT_SYMBOL(lustre_packed_msg_size);
 194
 195 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 196                         char **bufs)
 197 {
 198         char *ptr;
 199         int i;
 200
 201         msg->lm_bufcount = count;
 202         /* XXX: lm_secflvr uninitialized here */
 203         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 204
 205         for (i = 0; i < count; i++)
 206                 msg->lm_buflens[i] = lens[i];
 207
 208         if (bufs == NULL)
 209                 return;
 210
 211         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 212         for (i = 0; i < count; i++) {
 213                 char *tmp = bufs[i];
 214                 LOGL(tmp, lens[i], ptr);
 215         }
 216 }
 217 EXPORT_SYMBOL(lustre_init_msg_v2);
 218
 219 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 220                                   int count, __u32 *lens, char **bufs)
 221 {
 222         int reqlen, rc;
 223
 224         reqlen = lustre_msg_size_v2(count, lens);
 225
 226         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 227         if (rc)
 228                 return rc;
 229
 230         req->rq_reqlen = reqlen;
 231
 232         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 233         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 234         return 0;
 235 }
 236
 237 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 238                         __u32 *lens, char **bufs)
 239 {
 240         __u32 size[] = { sizeof(struct ptlrpc_body) };
 241
 242         if (!lens) {
 243                 LASSERT(count == 1);
 244                 lens = size;
 245         }
 246
 247         LASSERT(count > 0);
 248         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 249
 250         /* only use new format, we don't need to be compatible with 1.4 */
 251         magic = LUSTRE_MSG_MAGIC_V2;
 252
 253         switch (magic) {
 254         case LUSTRE_MSG_MAGIC_V2:
 255                 return lustre_pack_request_v2(req, count, lens, bufs);
 256         default:
 257                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 258                 return -EINVAL;
 259         }
 260 }
 261 EXPORT_SYMBOL(lustre_pack_request);
 262
 263 #if RS_DEBUG
 264 CFS_LIST_HEAD(ptlrpc_rs_debug_lru);
 265 spinlock_t ptlrpc_rs_debug_lock;
 266
 267 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 268 do {                                                                    \
 269         spin_lock(&ptlrpc_rs_debug_lock);                               \
 270         cfs_list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);  \
 271         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 272 } while (0)
 273
 274 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 275 do {                                                                    \
 276         spin_lock(&ptlrpc_rs_debug_lock);                               \
 277         cfs_list_del(&(rs)->rs_debug_list);                             \
 278         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 279 } while (0)
 280 #else
 281 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 282 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 283 #endif
 284
 285 struct ptlrpc_reply_state *
 286 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 287 {
 288         struct ptlrpc_reply_state *rs = NULL;
 289
 290         spin_lock(&svcpt->scp_rep_lock);
 291
 292         /* See if we have anything in a pool, and wait if nothing */
 293         while (cfs_list_empty(&svcpt->scp_rep_idle)) {
 294                 struct l_wait_info      lwi;
 295                 int                     rc;
 296
 297                 spin_unlock(&svcpt->scp_rep_lock);
 298                 /* If we cannot get anything for some long time, we better
 299                  * bail out instead of waiting infinitely */
 300                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 301                 rc = l_wait_event(svcpt->scp_rep_waitq,
 302                                   !cfs_list_empty(&svcpt->scp_rep_idle), &lwi);
 303                 if (rc != 0)
 304                         goto out;
 305                 spin_lock(&svcpt->scp_rep_lock);
 306         }
 307
 308         rs = cfs_list_entry(svcpt->scp_rep_idle.next,
 309                             struct ptlrpc_reply_state, rs_list);
 310         cfs_list_del(&rs->rs_list);
 311
 312         spin_unlock(&svcpt->scp_rep_lock);
 313
 314         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 315         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 316         rs->rs_svcpt = svcpt;
 317         rs->rs_prealloc = 1;
 318 out:
 319         return rs;
 320 }
 321
 322 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 323 {
 324         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 325
 326         spin_lock(&svcpt->scp_rep_lock);
 327         cfs_list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 328         spin_unlock(&svcpt->scp_rep_lock);
 329         wake_up(&svcpt->scp_rep_waitq);
 330 }
 331
 332 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 333                          __u32 *lens, char **bufs, int flags)
 334 {
 335         struct ptlrpc_reply_state *rs;
 336         int                        msg_len, rc;
 337         ENTRY;
 338
 339         LASSERT(req->rq_reply_state == NULL);
 340
 341         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 342                 spin_lock(&req->rq_lock);
 343                 req->rq_packed_final = 1;
 344                 spin_unlock(&req->rq_lock);
 345         }
 346
 347         msg_len = lustre_msg_size_v2(count, lens);
 348         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 349         if (rc)
 350                 RETURN(rc);
 351
 352         rs = req->rq_reply_state;
 353         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 354         rs->rs_cb_id.cbid_fn = reply_out_callback;
 355         rs->rs_cb_id.cbid_arg = rs;
 356         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 357         CFS_INIT_LIST_HEAD(&rs->rs_exp_list);
 358         CFS_INIT_LIST_HEAD(&rs->rs_obd_list);
 359         CFS_INIT_LIST_HEAD(&rs->rs_list);
 360         spin_lock_init(&rs->rs_lock);
 361
 362         req->rq_replen = msg_len;
 363         req->rq_reply_state = rs;
 364         req->rq_repmsg = rs->rs_msg;
 365
 366         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 367         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 368
 369         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 370
 371         RETURN(0);
 372 }
 373 EXPORT_SYMBOL(lustre_pack_reply_v2);
 374
 375 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 376                             char **bufs, int flags)
 377 {
 378         int rc = 0;
 379         __u32 size[] = { sizeof(struct ptlrpc_body) };
 380
 381         if (!lens) {
 382                 LASSERT(count == 1);
 383                 lens = size;
 384         }
 385
 386         LASSERT(count > 0);
 387         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 388
 389         switch (req->rq_reqmsg->lm_magic) {
 390         case LUSTRE_MSG_MAGIC_V2:
 391                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 392                 break;
 393         default:
 394                 LASSERTF(0, "incorrect message magic: %08x\n",
 395                          req->rq_reqmsg->lm_magic);
 396                 rc = -EINVAL;
 397         }
 398         if (rc != 0)
 399                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 400                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 401         return rc;
 402 }
 403 EXPORT_SYMBOL(lustre_pack_reply_flags);
 404
 405 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 406                       char **bufs)
 407 {
 408         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 409 }
 410 EXPORT_SYMBOL(lustre_pack_reply);
 411
 412 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, int n, int min_size)
 413 {
 414         int i, offset, buflen, bufcount;
 415
 416         LASSERT(m != NULL);
 417         LASSERT(n >= 0);
 418
 419         bufcount = m->lm_bufcount;
 420         if (unlikely(n >= bufcount)) {
 421                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 422                        m, n, bufcount);
 423                 return NULL;
 424         }
 425
 426         buflen = m->lm_buflens[n];
 427         if (unlikely(buflen < min_size)) {
 428                 CERROR("msg %p buffer[%d] size %d too small "
 429                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 430                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 431                 return NULL;
 432         }
 433
 434         offset = lustre_msg_hdr_size_v2(bufcount);
 435         for (i = 0; i < n; i++)
 436                 offset += cfs_size_round(m->lm_buflens[i]);
 437
 438         return (char *)m + offset;
 439 }
 440
 441 void *lustre_msg_buf(struct lustre_msg *m, int n, int min_size)
 442 {
 443         switch (m->lm_magic) {
 444         case LUSTRE_MSG_MAGIC_V2:
 445                 return lustre_msg_buf_v2(m, n, min_size);
 446         default:
 447                 LASSERTF(0, "incorrect message magic: %08x(msg:%p)\n", m->lm_magic, m);
 448                 return NULL;
 449         }
 450 }
 451 EXPORT_SYMBOL(lustre_msg_buf);
 452
 453 int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, int segment,
 454                          unsigned int newlen, int move_data)
 455 {
 456         char   *tail = NULL, *newpos;
 457         int     tail_len = 0, n;
 458
 459         LASSERT(msg);
 460         LASSERT(msg->lm_bufcount > segment);
 461         LASSERT(msg->lm_buflens[segment] >= newlen);
 462
 463         if (msg->lm_buflens[segment] == newlen)
 464                 goto out;
 465
 466         if (move_data && msg->lm_bufcount > segment + 1) {
 467                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 468                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 469                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 470         }
 471
 472         msg->lm_buflens[segment] = newlen;
 473
 474         if (tail && tail_len) {
 475                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 476                 LASSERT(newpos <= tail);
 477                 if (newpos != tail)
 478                         memmove(newpos, tail, tail_len);
 479         }
 480 out:
 481         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 482 }
 483
 484 /*
 485  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 486  * we also move data forward from @segment + 1.
 487  *
 488  * if @newlen == 0, we remove the segment completely, but we still keep the
 489  * totally bufcount the same to save possible data moving. this will leave a
 490  * unused segment with size 0 at the tail, but that's ok.
 491  *
 492  * return new msg size after shrinking.
 493  *
 494  * CAUTION:
 495  * + if any buffers higher than @segment has been filled in, must call shrink
 496  *   with non-zero @move_data.
 497  * + caller should NOT keep pointers to msg buffers which higher than @segment
 498  *   after call shrink.
 499  */
 500 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 501                       unsigned int newlen, int move_data)
 502 {
 503         switch (msg->lm_magic) {
 504         case LUSTRE_MSG_MAGIC_V2:
 505                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 506         default:
 507                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 508         }
 509 }
 510 EXPORT_SYMBOL(lustre_shrink_msg);
 511
 512 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 513 {
 514         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 515
 516         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 517         LASSERT(!rs->rs_difficult || rs->rs_handled);
 518         LASSERT(!rs->rs_on_net);
 519         LASSERT(!rs->rs_scheduled);
 520         LASSERT(rs->rs_export == NULL);
 521         LASSERT(rs->rs_nlocks == 0);
 522         LASSERT(cfs_list_empty(&rs->rs_exp_list));
 523         LASSERT(cfs_list_empty(&rs->rs_obd_list));
 524
 525         sptlrpc_svc_free_rs(rs);
 526 }
 527 EXPORT_SYMBOL(lustre_free_reply_state);
 528
 529 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 530 {
 531         int swabbed, required_len, i;
 532
 533         /* Now we know the sender speaks my language. */
 534         required_len = lustre_msg_hdr_size_v2(0);
 535         if (len < required_len) {
 536                 /* can't even look inside the message */
 537                 CERROR("message length %d too small for lustre_msg\n", len);
 538                 return -EINVAL;
 539         }
 540
 541         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 542
 543         if (swabbed) {
 544                 __swab32s(&m->lm_magic);
 545                 __swab32s(&m->lm_bufcount);
 546                 __swab32s(&m->lm_secflvr);
 547                 __swab32s(&m->lm_repsize);
 548                 __swab32s(&m->lm_cksum);
 549                 __swab32s(&m->lm_flags);
 550                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 551                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 552         }
 553
 554         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 555         if (len < required_len) {
 556                 /* didn't receive all the buffer lengths */
 557                 CERROR ("message length %d too small for %d buflens\n",
 558                         len, m->lm_bufcount);
 559                 return -EINVAL;
 560         }
 561
 562         for (i = 0; i < m->lm_bufcount; i++) {
 563                 if (swabbed)
 564                         __swab32s(&m->lm_buflens[i]);
 565                 required_len += cfs_size_round(m->lm_buflens[i]);
 566         }
 567
 568         if (len < required_len) {
 569                 CERROR("len: %d, required_len %d\n", len, required_len);
 570                 CERROR("bufcount: %d\n", m->lm_bufcount);
 571                 for (i = 0; i < m->lm_bufcount; i++)
 572                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 573                 return -EINVAL;
 574         }
 575
 576         return swabbed;
 577 }
 578
 579 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 580 {
 581         int required_len, rc;
 582         ENTRY;
 583
 584         /* We can provide a slightly better error log, if we check the
 585          * message magic and version first.  In the future, struct
 586          * lustre_msg may grow, and we'd like to log a version mismatch,
 587          * rather than a short message.
 588          *
 589          */
 590         required_len = offsetof(struct lustre_msg, lm_magic) +
 591                        sizeof(m->lm_magic);
 592         if (len < required_len) {
 593                 /* can't even look inside the message */
 594                 CERROR("message length %d too small for magic/version check\n",
 595                        len);
 596                 RETURN(-EINVAL);
 597         }
 598
 599         rc = lustre_unpack_msg_v2(m, len);
 600
 601         RETURN(rc);
 602 }
 603 EXPORT_SYMBOL(__lustre_unpack_msg);
 604
 605 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 606 {
 607         int rc;
 608         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 609         if (rc == 1) {
 610                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 611                 rc = 0;
 612         }
 613         return rc;
 614 }
 615 EXPORT_SYMBOL(ptlrpc_unpack_req_msg);
 616
 617 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 618 {
 619         int rc;
 620         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 621         if (rc == 1) {
 622                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 623                 rc = 0;
 624         }
 625         return rc;
 626 }
 627 EXPORT_SYMBOL(ptlrpc_unpack_rep_msg);
 628
 629 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 630                                                const int inout, int offset)
 631 {
 632         struct ptlrpc_body *pb;
 633         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 634
 635         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 636         if (!pb) {
 637                 CERROR("error unpacking ptlrpc body\n");
 638                 return -EFAULT;
 639         }
 640         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 641                 lustre_swab_ptlrpc_body(pb);
 642                 ptlrpc_buf_set_swabbed(req, inout, offset);
 643         }
 644
 645         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 646                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 647                  return -EINVAL;
 648         }
 649
 650         if (!inout)
 651                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 652
 653         return 0;
 654 }
 655
 656 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 657 {
 658         switch (req->rq_reqmsg->lm_magic) {
 659         case LUSTRE_MSG_MAGIC_V2:
 660                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 661         default:
 662                 CERROR("bad lustre msg magic: %08x\n",
 663                        req->rq_reqmsg->lm_magic);
 664                 return -EINVAL;
 665         }
 666 }
 667
 668 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 669 {
 670         switch (req->rq_repmsg->lm_magic) {
 671         case LUSTRE_MSG_MAGIC_V2:
 672                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 673         default:
 674                 CERROR("bad lustre msg magic: %08x\n",
 675                        req->rq_repmsg->lm_magic);
 676                 return -EINVAL;
 677         }
 678 }
 679
 680 static inline int lustre_msg_buflen_v2(struct lustre_msg_v2 *m, int n)
 681 {
 682         if (n >= m->lm_bufcount)
 683                 return 0;
 684
 685         return m->lm_buflens[n];
 686 }
 687
 688 /**
 689  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 690  * \param m lustre_msg (request or reply) to look at
 691  * \param n message index (base 0)
 692  *
 693  * returns zero for non-existent message indices
 694  */
 695 int lustre_msg_buflen(struct lustre_msg *m, int n)
 696 {
 697         switch (m->lm_magic) {
 698         case LUSTRE_MSG_MAGIC_V2:
 699                 return lustre_msg_buflen_v2(m, n);
 700         default:
 701                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 702                 return -EINVAL;
 703         }
 704 }
 705 EXPORT_SYMBOL(lustre_msg_buflen);
 706
 707 static inline void
 708 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, int n, int len)
 709 {
 710         if (n >= m->lm_bufcount)
 711                 LBUG();
 712
 713         m->lm_buflens[n] = len;
 714 }
 715
 716 void lustre_msg_set_buflen(struct lustre_msg *m, int n, int len)
 717 {
 718         switch (m->lm_magic) {
 719         case LUSTRE_MSG_MAGIC_V2:
 720                 lustre_msg_set_buflen_v2(m, n, len);
 721                 return;
 722         default:
 723                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 724         }
 725 }
 726
 727 EXPORT_SYMBOL(lustre_msg_set_buflen);
 728
 729 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 730  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 731 int lustre_msg_bufcount(struct lustre_msg *m)
 732 {
 733         switch (m->lm_magic) {
 734         case LUSTRE_MSG_MAGIC_V2:
 735                 return m->lm_bufcount;
 736         default:
 737                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 738                 return -EINVAL;
 739         }
 740 }
 741 EXPORT_SYMBOL(lustre_msg_bufcount);
 742
 743 char *lustre_msg_string(struct lustre_msg *m, int index, int max_len)
 744 {
 745         /* max_len == 0 means the string should fill the buffer */
 746         char *str;
 747         int slen, blen;
 748
 749         switch (m->lm_magic) {
 750         case LUSTRE_MSG_MAGIC_V2:
 751                 str = lustre_msg_buf_v2(m, index, 0);
 752                 blen = lustre_msg_buflen_v2(m, index);
 753                 break;
 754         default:
 755                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 756         }
 757
 758         if (str == NULL) {
 759                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 760                 return NULL;
 761         }
 762
 763         slen = strnlen(str, blen);
 764
 765         if (slen == blen) {                     /* not NULL terminated */
 766                 CERROR("can't unpack non-NULL terminated string in "
 767                         "msg %p buffer[%d] len %d\n", m, index, blen);
 768                 return NULL;
 769         }
 770
 771         if (max_len == 0) {
 772                 if (slen != blen - 1) {
 773                         CERROR("can't unpack short string in msg %p "
 774                                "buffer[%d] len %d: strlen %d\n",
 775                                m, index, blen, slen);
 776                         return NULL;
 777                 }
 778         } else if (slen > max_len) {
 779                 CERROR("can't unpack oversized string in msg %p "
 780                        "buffer[%d] len %d strlen %d: max %d expected\n",
 781                        m, index, blen, slen, max_len);
 782                 return NULL;
 783         }
 784
 785         return str;
 786 }
 787 EXPORT_SYMBOL(lustre_msg_string);
 788
 789 /* Wrap up the normal fixed length cases */
 790 static inline void *__lustre_swab_buf(struct lustre_msg *msg, int index,
 791                                       int min_size, void *swabber)
 792 {
 793         void *ptr = NULL;
 794
 795         LASSERT(msg != NULL);
 796         switch (msg->lm_magic) {
 797         case LUSTRE_MSG_MAGIC_V2:
 798                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 799                 break;
 800         default:
 801                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 802         }
 803
 804         if (ptr && swabber)
 805                 ((void (*)(void *))swabber)(ptr);
 806
 807         return ptr;
 808 }
 809
 810 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 811 {
 812         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 813                                  sizeof(struct ptlrpc_body_v2));
 814 }
 815
 816 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
 817 {
 818         switch (msg->lm_magic) {
 819         case LUSTRE_MSG_MAGIC_V1:
 820         case LUSTRE_MSG_MAGIC_V1_SWABBED:
 821                 return 0;
 822         case LUSTRE_MSG_MAGIC_V2:
 823                 /* already in host endian */
 824                 return msg->lm_flags;
 825         default:
 826                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 827                 return 0;
 828         }
 829 }
 830 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 831
 832 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 833 {
 834         switch (msg->lm_magic) {
 835         case LUSTRE_MSG_MAGIC_V1:
 836                 return;
 837         case LUSTRE_MSG_MAGIC_V2:
 838                 msg->lm_flags = flags;
 839                 return;
 840         default:
 841                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 842         }
 843 }
 844
 845 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 846 {
 847         switch (msg->lm_magic) {
 848         case LUSTRE_MSG_MAGIC_V2: {
 849                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 850                 if (!pb) {
 851                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 852                         return 0;
 853                 }
 854                 return pb->pb_flags;
 855         }
 856         default:
 857                 /* flags might be printed in debug code while message
 858                  * uninitialized */
 859                 return 0;
 860         }
 861 }
 862 EXPORT_SYMBOL(lustre_msg_get_flags);
 863
 864 void lustre_msg_add_flags(struct lustre_msg *msg, int flags)
 865 {
 866         switch (msg->lm_magic) {
 867         case LUSTRE_MSG_MAGIC_V2: {
 868                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 869                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 870                 pb->pb_flags |= flags;
 871                 return;
 872         }
 873         default:
 874                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 875         }
 876 }
 877 EXPORT_SYMBOL(lustre_msg_add_flags);
 878
 879 void lustre_msg_set_flags(struct lustre_msg *msg, int flags)
 880 {
 881         switch (msg->lm_magic) {
 882         case LUSTRE_MSG_MAGIC_V2: {
 883                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 884                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 885                 pb->pb_flags = flags;
 886                 return;
 887         }
 888         default:
 889                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 890         }
 891 }
 892 EXPORT_SYMBOL(lustre_msg_set_flags);
 893
 894 void lustre_msg_clear_flags(struct lustre_msg *msg, int flags)
 895 {
 896         switch (msg->lm_magic) {
 897         case LUSTRE_MSG_MAGIC_V2: {
 898                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 899                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 900                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
 901                 return;
 902         }
 903         default:
 904                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 905         }
 906 }
 907 EXPORT_SYMBOL(lustre_msg_clear_flags);
 908
 909 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 910 {
 911         switch (msg->lm_magic) {
 912         case LUSTRE_MSG_MAGIC_V2: {
 913                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 914                 if (!pb) {
 915                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 916                         return 0;
 917                 }
 918                 return pb->pb_op_flags;
 919         }
 920         default:
 921                 return 0;
 922         }
 923 }
 924 EXPORT_SYMBOL(lustre_msg_get_op_flags);
 925
 926 void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags)
 927 {
 928         switch (msg->lm_magic) {
 929         case LUSTRE_MSG_MAGIC_V2: {
 930                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 931                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 932                 pb->pb_op_flags |= flags;
 933                 return;
 934         }
 935         default:
 936                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 937         }
 938 }
 939 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 940
 941 void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags)
 942 {
 943         switch (msg->lm_magic) {
 944         case LUSTRE_MSG_MAGIC_V2: {
 945                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 946                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 947                 pb->pb_op_flags |= flags;
 948                 return;
 949         }
 950         default:
 951                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 952         }
 953 }
 954 EXPORT_SYMBOL(lustre_msg_set_op_flags);
 955
 956 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 957 {
 958         switch (msg->lm_magic) {
 959         case LUSTRE_MSG_MAGIC_V2: {
 960                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 961                 if (!pb) {
 962                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 963                         return NULL;
 964                 }
 965                 return &pb->pb_handle;
 966         }
 967         default:
 968                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 969                 return NULL;
 970         }
 971 }
 972 EXPORT_SYMBOL(lustre_msg_get_handle);
 973
 974 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 975 {
 976         switch (msg->lm_magic) {
 977         case LUSTRE_MSG_MAGIC_V2: {
 978                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 979                 if (!pb) {
 980                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 981                         return PTL_RPC_MSG_ERR;
 982                 }
 983                 return pb->pb_type;
 984         }
 985         default:
 986                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 987                 return PTL_RPC_MSG_ERR;
 988         }
 989 }
 990 EXPORT_SYMBOL(lustre_msg_get_type);
 991
 992 __u32 lustre_msg_get_version(struct lustre_msg *msg)
 993 {
 994         switch (msg->lm_magic) {
 995         case LUSTRE_MSG_MAGIC_V2: {
 996                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 997                 if (!pb) {
 998                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 999                         return 0;
1000                 }
1001                 return pb->pb_version;
1002         }
1003         default:
1004                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1005                 return 0;
1006         }
1007 }
1008 EXPORT_SYMBOL(lustre_msg_get_version);
1009
1010 void lustre_msg_add_version(struct lustre_msg *msg, int version)
1011 {
1012         switch (msg->lm_magic) {
1013         case LUSTRE_MSG_MAGIC_V2: {
1014                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1015                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1016                 pb->pb_version |= version;
1017                 return;
1018         }
1019         default:
1020                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1021         }
1022 }
1023 EXPORT_SYMBOL(lustre_msg_add_version);
1024
1025 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1026 {
1027         switch (msg->lm_magic) {
1028         case LUSTRE_MSG_MAGIC_V2: {
1029                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1030                 if (!pb) {
1031                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1032                         return 0;
1033                 }
1034                 return pb->pb_opc;
1035         }
1036         default:
1037                 CERROR("incorrect message magic: %08x(msg:%p)\n", msg->lm_magic, msg);
1038                 LBUG();
1039                 return 0;
1040         }
1041 }
1042 EXPORT_SYMBOL(lustre_msg_get_opc);
1043
1044 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1045 {
1046         switch (msg->lm_magic) {
1047         case LUSTRE_MSG_MAGIC_V2: {
1048                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1049                 if (!pb) {
1050                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1051                         return 0;
1052                 }
1053                 return pb->pb_last_xid;
1054         }
1055         default:
1056                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1057                 return 0;
1058         }
1059 }
1060 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1061
1062 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1063 {
1064         switch (msg->lm_magic) {
1065         case LUSTRE_MSG_MAGIC_V2: {
1066                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1067                 if (!pb) {
1068                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1069                         return 0;
1070                 }
1071                 return pb->pb_last_committed;
1072         }
1073         default:
1074                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1075                 return 0;
1076         }
1077 }
1078 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1079
1080 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1081 {
1082         switch (msg->lm_magic) {
1083         case LUSTRE_MSG_MAGIC_V1:
1084                 return NULL;
1085         case LUSTRE_MSG_MAGIC_V2: {
1086                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1087                 if (!pb) {
1088                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1089                         return NULL;
1090                 }
1091                 return pb->pb_pre_versions;
1092         }
1093         default:
1094                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1095                 return NULL;
1096         }
1097 }
1098 EXPORT_SYMBOL(lustre_msg_get_versions);
1099
1100 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1101 {
1102         switch (msg->lm_magic) {
1103         case LUSTRE_MSG_MAGIC_V2: {
1104                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1105                 if (!pb) {
1106                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1107                         return 0;
1108                 }
1109                 return pb->pb_transno;
1110         }
1111         default:
1112                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1113                 return 0;
1114         }
1115 }
1116 EXPORT_SYMBOL(lustre_msg_get_transno);
1117
1118 int lustre_msg_get_status(struct lustre_msg *msg)
1119 {
1120         switch (msg->lm_magic) {
1121         case LUSTRE_MSG_MAGIC_V2: {
1122                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1123                 if (!pb) {
1124                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1125                         return -EINVAL;
1126                 }
1127                 return pb->pb_status;
1128         }
1129         default:
1130                 /* status might be printed in debug code while message
1131                  * uninitialized */
1132                 return -EINVAL;
1133         }
1134 }
1135 EXPORT_SYMBOL(lustre_msg_get_status);
1136
1137 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1138 {
1139         switch (msg->lm_magic) {
1140         case LUSTRE_MSG_MAGIC_V2: {
1141                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1142                 if (!pb) {
1143                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1144                         return -EINVAL;
1145                 }
1146                 return pb->pb_slv;
1147         }
1148         default:
1149                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1150                 return -EINVAL;
1151         }
1152 }
1153 EXPORT_SYMBOL(lustre_msg_get_slv);
1154
1155
1156 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1157 {
1158         switch (msg->lm_magic) {
1159         case LUSTRE_MSG_MAGIC_V2: {
1160                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1161                 if (!pb) {
1162                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1163                         return;
1164                 }
1165                 pb->pb_slv = slv;
1166                 return;
1167         }
1168         default:
1169                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1170                 return;
1171         }
1172 }
1173 EXPORT_SYMBOL(lustre_msg_set_slv);
1174
1175 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1176 {
1177         switch (msg->lm_magic) {
1178         case LUSTRE_MSG_MAGIC_V2: {
1179                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1180                 if (!pb) {
1181                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1182                         return -EINVAL;
1183                 }
1184                 return pb->pb_limit;
1185         }
1186         default:
1187                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1188                 return -EINVAL;
1189         }
1190 }
1191 EXPORT_SYMBOL(lustre_msg_get_limit);
1192
1193
1194 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1195 {
1196         switch (msg->lm_magic) {
1197         case LUSTRE_MSG_MAGIC_V2: {
1198                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1199                 if (!pb) {
1200                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1201                         return;
1202                 }
1203                 pb->pb_limit = limit;
1204                 return;
1205         }
1206         default:
1207                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1208                 return;
1209         }
1210 }
1211 EXPORT_SYMBOL(lustre_msg_set_limit);
1212
1213 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1214 {
1215         switch (msg->lm_magic) {
1216         case LUSTRE_MSG_MAGIC_V2: {
1217                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1218                 if (!pb) {
1219                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1220                         return 0;
1221                 }
1222                 return pb->pb_conn_cnt;
1223         }
1224         default:
1225                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1226                 return 0;
1227         }
1228 }
1229 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1230
1231 int lustre_msg_is_v1(struct lustre_msg *msg)
1232 {
1233         switch (msg->lm_magic) {
1234         case LUSTRE_MSG_MAGIC_V1:
1235         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1236                 return 1;
1237         default:
1238                 return 0;
1239         }
1240 }
1241 EXPORT_SYMBOL(lustre_msg_is_v1);
1242
1243 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1244 {
1245         switch (msg->lm_magic) {
1246         case LUSTRE_MSG_MAGIC_V2:
1247                 return msg->lm_magic;
1248         default:
1249                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1250                 return 0;
1251         }
1252 }
1253 EXPORT_SYMBOL(lustre_msg_get_magic);
1254
1255 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1256 {
1257         switch (msg->lm_magic) {
1258         case LUSTRE_MSG_MAGIC_V1:
1259         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1260                 return 0;
1261         case LUSTRE_MSG_MAGIC_V2: {
1262                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1263                 if (!pb) {
1264                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1265                         return 0;
1266
1267                 }
1268                 return pb->pb_timeout;
1269         }
1270         default:
1271                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1272                 return 0;
1273         }
1274 }
1275
1276 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1277 {
1278         switch (msg->lm_magic) {
1279         case LUSTRE_MSG_MAGIC_V1:
1280         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1281                 return 0;
1282         case LUSTRE_MSG_MAGIC_V2: {
1283                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1284                 if (!pb) {
1285                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1286                         return 0;
1287
1288                 }
1289                 return pb->pb_service_time;
1290         }
1291         default:
1292                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1293                 return 0;
1294         }
1295 }
1296
1297 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1298 {
1299         switch (msg->lm_magic) {
1300         case LUSTRE_MSG_MAGIC_V1:
1301         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1302                 return NULL;
1303         case LUSTRE_MSG_MAGIC_V2: {
1304                 struct ptlrpc_body *pb =
1305                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1306                                           sizeof(struct ptlrpc_body));
1307                 if (!pb)
1308                         return NULL;
1309
1310                 return pb->pb_jobid;
1311         }
1312         default:
1313                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1314                 return NULL;
1315         }
1316 }
1317 EXPORT_SYMBOL(lustre_msg_get_jobid);
1318
1319 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1320 {
1321         switch (msg->lm_magic) {
1322         case LUSTRE_MSG_MAGIC_V2:
1323                 return msg->lm_cksum;
1324         default:
1325                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1326                 return 0;
1327         }
1328 }
1329
1330 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1331 /*
1332  * In 1.6 and 1.8 the checksum was computed only on struct ptlrpc_body as
1333  * it was in 1.6 (88 bytes, smaller than the full size in 1.8).  It makes
1334  * more sense to compute the checksum on the full ptlrpc_body, regardless
1335  * of what size it is, but in order to keep interoperability with 1.8 we
1336  * can optionally also checksum only the first 88 bytes (caller decides). */
1337 # define ptlrpc_body_cksum_size_compat18         88
1338
1339 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg, int compat18)
1340 #else
1341 # warning "remove checksum compatibility support for b1_8"
1342 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1343 #endif
1344 {
1345         switch (msg->lm_magic) {
1346         case LUSTRE_MSG_MAGIC_V2: {
1347                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1348 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1349                 __u32 crc;
1350                 unsigned int hsize = 4;
1351                 __u32 len = compat18 ? ptlrpc_body_cksum_size_compat18 :
1352                             lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1353                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1354                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1355                                        len, NULL, 0, (unsigned char *)&crc,
1356                                        &hsize);
1357                 return crc;
1358 #else
1359 # warning "remove checksum compatibility support for b1_8"
1360                 __u32 crc;
1361                 unsigned int hsize = 4;
1362                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1363                                    lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF),
1364                                    NULL, 0, (unsigned char *)&crc, &hsize);
1365                 return crc;
1366 #endif
1367         }
1368         default:
1369                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1370                 return 0;
1371         }
1372 }
1373
1374 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1375 {
1376         switch (msg->lm_magic) {
1377         case LUSTRE_MSG_MAGIC_V2: {
1378                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1379                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1380                 pb->pb_handle = *handle;
1381                 return;
1382         }
1383         default:
1384                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1385         }
1386 }
1387 EXPORT_SYMBOL(lustre_msg_set_handle);
1388
1389 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1390 {
1391         switch (msg->lm_magic) {
1392         case LUSTRE_MSG_MAGIC_V2: {
1393                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1394                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1395                 pb->pb_type = type;
1396                 return;
1397         }
1398         default:
1399                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1400         }
1401 }
1402 EXPORT_SYMBOL(lustre_msg_set_type);
1403
1404 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1405 {
1406         switch (msg->lm_magic) {
1407         case LUSTRE_MSG_MAGIC_V2: {
1408                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1409                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1410                 pb->pb_opc = opc;
1411                 return;
1412         }
1413         default:
1414                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1415         }
1416 }
1417 EXPORT_SYMBOL(lustre_msg_set_opc);
1418
1419 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1420 {
1421         switch (msg->lm_magic) {
1422         case LUSTRE_MSG_MAGIC_V2: {
1423                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1424                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1425                 pb->pb_last_xid = last_xid;
1426                 return;
1427         }
1428         default:
1429                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1430         }
1431 }
1432 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1433
1434 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1435 {
1436         switch (msg->lm_magic) {
1437         case LUSTRE_MSG_MAGIC_V2: {
1438                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1439                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1440                 pb->pb_last_committed = last_committed;
1441                 return;
1442         }
1443         default:
1444                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1445         }
1446 }
1447 EXPORT_SYMBOL(lustre_msg_set_last_committed);
1448
1449 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1450 {
1451         switch (msg->lm_magic) {
1452         case LUSTRE_MSG_MAGIC_V1:
1453                 return;
1454         case LUSTRE_MSG_MAGIC_V2: {
1455                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1456                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1457                 pb->pb_pre_versions[0] = versions[0];
1458                 pb->pb_pre_versions[1] = versions[1];
1459                 pb->pb_pre_versions[2] = versions[2];
1460                 pb->pb_pre_versions[3] = versions[3];
1461                 return;
1462         }
1463         default:
1464                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1465         }
1466 }
1467 EXPORT_SYMBOL(lustre_msg_set_versions);
1468
1469 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1470 {
1471         switch (msg->lm_magic) {
1472         case LUSTRE_MSG_MAGIC_V2: {
1473                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1474                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1475                 pb->pb_transno = transno;
1476                 return;
1477         }
1478         default:
1479                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1480         }
1481 }
1482 EXPORT_SYMBOL(lustre_msg_set_transno);
1483
1484 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1485 {
1486         switch (msg->lm_magic) {
1487         case LUSTRE_MSG_MAGIC_V2: {
1488                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1489                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1490                 pb->pb_status = status;
1491                 return;
1492         }
1493         default:
1494                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1495         }
1496 }
1497 EXPORT_SYMBOL(lustre_msg_set_status);
1498
1499 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1500 {
1501         switch (msg->lm_magic) {
1502         case LUSTRE_MSG_MAGIC_V2: {
1503                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1504                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1505                 pb->pb_conn_cnt = conn_cnt;
1506                 return;
1507         }
1508         default:
1509                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1510         }
1511 }
1512 EXPORT_SYMBOL(lustre_msg_set_conn_cnt);
1513
1514 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1515 {
1516         switch (msg->lm_magic) {
1517         case LUSTRE_MSG_MAGIC_V1:
1518                 return;
1519         case LUSTRE_MSG_MAGIC_V2: {
1520                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1521                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1522                 pb->pb_timeout = timeout;
1523                 return;
1524         }
1525         default:
1526                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1527         }
1528 }
1529
1530 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1531 {
1532         switch (msg->lm_magic) {
1533         case LUSTRE_MSG_MAGIC_V1:
1534                 return;
1535         case LUSTRE_MSG_MAGIC_V2: {
1536                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1537                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1538                 pb->pb_service_time = service_time;
1539                 return;
1540         }
1541         default:
1542                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1543         }
1544 }
1545
1546 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1547 {
1548         switch (msg->lm_magic) {
1549         case LUSTRE_MSG_MAGIC_V1:
1550                 return;
1551         case LUSTRE_MSG_MAGIC_V2: {
1552                 __u32 opc = lustre_msg_get_opc(msg);
1553                 struct ptlrpc_body *pb;
1554
1555                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1556                  * See the comment in ptlrpc_request_pack(). */
1557                 if (!opc || opc == LDLM_BL_CALLBACK ||
1558                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1559                         return;
1560
1561                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1562                                        sizeof(struct ptlrpc_body));
1563                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1564
1565                 if (jobid != NULL)
1566                         memcpy(pb->pb_jobid, jobid, JOBSTATS_JOBID_SIZE);
1567                 else if (pb->pb_jobid[0] == '\0')
1568                         lustre_get_jobid(pb->pb_jobid);
1569                 return;
1570         }
1571         default:
1572                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1573         }
1574 }
1575 EXPORT_SYMBOL(lustre_msg_set_jobid);
1576
1577 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1578 {
1579         switch (msg->lm_magic) {
1580         case LUSTRE_MSG_MAGIC_V1:
1581                 return;
1582         case LUSTRE_MSG_MAGIC_V2:
1583                 msg->lm_cksum = cksum;
1584                 return;
1585         default:
1586                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1587         }
1588 }
1589
1590
1591 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1592 {
1593         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1594
1595         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1596                                          req->rq_pill.rc_area[RCL_SERVER]);
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_request_set_replen);
1601
1602 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1603 {
1604         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1605         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1606                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1607 }
1608 EXPORT_SYMBOL(ptlrpc_req_set_repsize);
1609
1610 /**
1611  * Send a remote set_info_async.
1612  *
1613  * This may go from client to server or server to client.
1614  */
1615 int do_set_info_async(struct obd_import *imp,
1616                       int opcode, int version,
1617                       obd_count keylen, void *key,
1618                       obd_count vallen, void *val,
1619                       struct ptlrpc_request_set *set)
1620 {
1621         struct ptlrpc_request *req;
1622         char                  *tmp;
1623         int                    rc;
1624         ENTRY;
1625
1626         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1627         if (req == NULL)
1628                 RETURN(-ENOMEM);
1629
1630         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1631                              RCL_CLIENT, keylen);
1632         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1633                              RCL_CLIENT, vallen);
1634         rc = ptlrpc_request_pack(req, version, opcode);
1635         if (rc) {
1636                 ptlrpc_request_free(req);
1637                 RETURN(rc);
1638         }
1639
1640         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1641         memcpy(tmp, key, keylen);
1642         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1643         memcpy(tmp, val, vallen);
1644
1645         ptlrpc_request_set_replen(req);
1646
1647         if (set) {
1648                 ptlrpc_set_add_req(set, req);
1649                 ptlrpc_check_set(NULL, set);
1650         } else {
1651                 rc = ptlrpc_queue_wait(req);
1652                 ptlrpc_req_finished(req);
1653         }
1654
1655         RETURN(rc);
1656 }
1657 EXPORT_SYMBOL(do_set_info_async);
1658
1659 /* byte flipping routines for all wire types declared in
1660  * lustre_idl.h implemented here.
1661  */
1662 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1663 {
1664         __swab32s (&b->pb_type);
1665         __swab32s (&b->pb_version);
1666         __swab32s (&b->pb_opc);
1667         __swab32s (&b->pb_status);
1668         __swab64s (&b->pb_last_xid);
1669         __swab64s (&b->pb_last_seen);
1670         __swab64s (&b->pb_last_committed);
1671         __swab64s (&b->pb_transno);
1672         __swab32s (&b->pb_flags);
1673         __swab32s (&b->pb_op_flags);
1674         __swab32s (&b->pb_conn_cnt);
1675         __swab32s (&b->pb_timeout);
1676         __swab32s (&b->pb_service_time);
1677         __swab32s (&b->pb_limit);
1678         __swab64s (&b->pb_slv);
1679         __swab64s (&b->pb_pre_versions[0]);
1680         __swab64s (&b->pb_pre_versions[1]);
1681         __swab64s (&b->pb_pre_versions[2]);
1682         __swab64s (&b->pb_pre_versions[3]);
1683         CLASSERT(offsetof(typeof(*b), pb_padding) != 0);
1684         /* While we need to maintain compatibility between
1685          * clients and servers without ptlrpc_body_v2 (< 2.3)
1686          * do not swab any fields beyond pb_jobid, as we are
1687          * using this swab function for both ptlrpc_body
1688          * and ptlrpc_body_v2. */
1689         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1690 }
1691 EXPORT_SYMBOL(lustre_swab_ptlrpc_body);
1692
1693 void lustre_swab_connect(struct obd_connect_data *ocd)
1694 {
1695         __swab64s(&ocd->ocd_connect_flags);
1696         __swab32s(&ocd->ocd_version);
1697         __swab32s(&ocd->ocd_grant);
1698         __swab64s(&ocd->ocd_ibits_known);
1699         __swab32s(&ocd->ocd_index);
1700         __swab32s(&ocd->ocd_brw_size);
1701         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1702          * they are 8-byte values */
1703         __swab16s(&ocd->ocd_grant_extent);
1704         __swab32s(&ocd->ocd_unused);
1705         __swab64s(&ocd->ocd_transno);
1706         __swab32s(&ocd->ocd_group);
1707         __swab32s(&ocd->ocd_cksum_types);
1708         __swab32s(&ocd->ocd_instance);
1709         /* Fields after ocd_cksum_types are only accessible by the receiver
1710          * if the corresponding flag in ocd_connect_flags is set. Accessing
1711          * any field after ocd_maxbytes on the receiver without a valid flag
1712          * may result in out-of-bound memory access and kernel oops. */
1713         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1714                 __swab32s(&ocd->ocd_max_easize);
1715         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1716                 __swab64s(&ocd->ocd_maxbytes);
1717         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1718         CLASSERT(offsetof(typeof(*ocd), padding2) != 0);
1719         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1720         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1721         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1722         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1723         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1724         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1725         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1726         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1727         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1728         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1729         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1730         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1731         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1732 }
1733
1734 void lustre_swab_obdo (struct obdo  *o)
1735 {
1736         __swab64s (&o->o_valid);
1737         lustre_swab_ost_id(&o->o_oi);
1738         __swab64s (&o->o_parent_seq);
1739         __swab64s (&o->o_size);
1740         __swab64s (&o->o_mtime);
1741         __swab64s (&o->o_atime);
1742         __swab64s (&o->o_ctime);
1743         __swab64s (&o->o_blocks);
1744         __swab64s (&o->o_grant);
1745         __swab32s (&o->o_blksize);
1746         __swab32s (&o->o_mode);
1747         __swab32s (&o->o_uid);
1748         __swab32s (&o->o_gid);
1749         __swab32s (&o->o_flags);
1750         __swab32s (&o->o_nlink);
1751         __swab32s (&o->o_parent_oid);
1752         __swab32s (&o->o_misc);
1753         __swab64s (&o->o_ioepoch);
1754         __swab32s (&o->o_stripe_idx);
1755         __swab32s (&o->o_parent_ver);
1756         /* o_handle is opaque */
1757         /* o_lcookie is swabbed elsewhere */
1758         __swab32s (&o->o_uid_h);
1759         __swab32s (&o->o_gid_h);
1760         __swab64s (&o->o_data_version);
1761         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1762         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1763         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1764
1765 }
1766 EXPORT_SYMBOL(lustre_swab_obdo);
1767
1768 void lustre_swab_obd_statfs (struct obd_statfs *os)
1769 {
1770         __swab64s (&os->os_type);
1771         __swab64s (&os->os_blocks);
1772         __swab64s (&os->os_bfree);
1773         __swab64s (&os->os_bavail);
1774         __swab64s (&os->os_files);
1775         __swab64s (&os->os_ffree);
1776         /* no need to swab os_fsid */
1777         __swab32s (&os->os_bsize);
1778         __swab32s (&os->os_namelen);
1779         __swab64s (&os->os_maxbytes);
1780         __swab32s (&os->os_state);
1781         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1782         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1783         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1784         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1785         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1786         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1787         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1788         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1789         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1790 }
1791 EXPORT_SYMBOL(lustre_swab_obd_statfs);
1792
1793 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1794 {
1795         lustre_swab_ost_id(&ioo->ioo_oid);
1796         __swab32s(&ioo->ioo_max_brw);
1797         __swab32s(&ioo->ioo_bufcnt);
1798 }
1799 EXPORT_SYMBOL(lustre_swab_obd_ioobj);
1800
1801 void lustre_swab_niobuf_remote (struct niobuf_remote *nbr)
1802 {
1803         __swab64s (&nbr->offset);
1804         __swab32s (&nbr->len);
1805         __swab32s (&nbr->flags);
1806 }
1807 EXPORT_SYMBOL(lustre_swab_niobuf_remote);
1808
1809 void lustre_swab_ost_body (struct ost_body *b)
1810 {
1811         lustre_swab_obdo (&b->oa);
1812 }
1813 EXPORT_SYMBOL(lustre_swab_ost_body);
1814
1815 void lustre_swab_ost_last_id(obd_id *id)
1816 {
1817         __swab64s(id);
1818 }
1819 EXPORT_SYMBOL(lustre_swab_ost_last_id);
1820
1821 void lustre_swab_generic_32s(__u32 *val)
1822 {
1823         __swab32s(val);
1824 }
1825 EXPORT_SYMBOL(lustre_swab_generic_32s);
1826
1827 void lustre_swab_gl_desc(union ldlm_gl_desc *desc)
1828 {
1829         lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid);
1830         __swab64s(&desc->lquota_desc.gl_flags);
1831         __swab64s(&desc->lquota_desc.gl_ver);
1832         __swab64s(&desc->lquota_desc.gl_hardlimit);
1833         __swab64s(&desc->lquota_desc.gl_softlimit);
1834         __swab64s(&desc->lquota_desc.gl_time);
1835         CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0);
1836 }
1837
1838 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1839 {
1840         __swab64s(&lvb->lvb_size);
1841         __swab64s(&lvb->lvb_mtime);
1842         __swab64s(&lvb->lvb_atime);
1843         __swab64s(&lvb->lvb_ctime);
1844         __swab64s(&lvb->lvb_blocks);
1845 }
1846 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1847
1848 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1849 {
1850         __swab64s(&lvb->lvb_size);
1851         __swab64s(&lvb->lvb_mtime);
1852         __swab64s(&lvb->lvb_atime);
1853         __swab64s(&lvb->lvb_ctime);
1854         __swab64s(&lvb->lvb_blocks);
1855         __swab32s(&lvb->lvb_mtime_ns);
1856         __swab32s(&lvb->lvb_atime_ns);
1857         __swab32s(&lvb->lvb_ctime_ns);
1858         __swab32s(&lvb->lvb_padding);
1859 }
1860 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1861
1862 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1863 {
1864         __swab64s(&lvb->lvb_flags);
1865         __swab64s(&lvb->lvb_id_may_rel);
1866         __swab64s(&lvb->lvb_id_rel);
1867         __swab64s(&lvb->lvb_id_qunit);
1868         __swab64s(&lvb->lvb_pad1);
1869 }
1870 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1871
1872 void lustre_swab_mdt_body (struct mdt_body *b)
1873 {
1874         lustre_swab_lu_fid(&b->mbo_fid1);
1875         lustre_swab_lu_fid(&b->mbo_fid2);
1876         /* handle is opaque */
1877         __swab64s(&b->mbo_valid);
1878         __swab64s(&b->mbo_size);
1879         __swab64s(&b->mbo_mtime);
1880         __swab64s(&b->mbo_atime);
1881         __swab64s(&b->mbo_ctime);
1882         __swab64s(&b->mbo_blocks);
1883         __swab64s(&b->mbo_ioepoch);
1884         __swab64s(&b->mbo_t_state);
1885         __swab32s(&b->mbo_fsuid);
1886         __swab32s(&b->mbo_fsgid);
1887         __swab32s(&b->mbo_capability);
1888         __swab32s(&b->mbo_mode);
1889         __swab32s(&b->mbo_uid);
1890         __swab32s(&b->mbo_gid);
1891         __swab32s(&b->mbo_flags);
1892         __swab32s(&b->mbo_rdev);
1893         __swab32s(&b->mbo_nlink);
1894         CLASSERT(offsetof(typeof(*b), mbo_unused2) != 0);
1895         __swab32s(&b->mbo_suppgid);
1896         __swab32s(&b->mbo_eadatasize);
1897         __swab32s(&b->mbo_aclsize);
1898         __swab32s(&b->mbo_max_mdsize);
1899         __swab32s(&b->mbo_max_cookiesize);
1900         __swab32s(&b->mbo_uid_h);
1901         __swab32s(&b->mbo_gid_h);
1902         CLASSERT(offsetof(typeof(*b), mbo_padding_5) != 0);
1903 }
1904 EXPORT_SYMBOL(lustre_swab_mdt_body);
1905
1906 void lustre_swab_mdt_ioepoch (struct mdt_ioepoch *b)
1907 {
1908         /* handle is opaque */
1909          __swab64s (&b->ioepoch);
1910          __swab32s (&b->flags);
1911          CLASSERT(offsetof(typeof(*b), padding) != 0);
1912 }
1913 EXPORT_SYMBOL(lustre_swab_mdt_ioepoch);
1914
1915 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1916 {
1917         int i;
1918         __swab32s(&mti->mti_lustre_ver);
1919         __swab32s(&mti->mti_stripe_index);
1920         __swab32s(&mti->mti_config_ver);
1921         __swab32s(&mti->mti_flags);
1922         __swab32s(&mti->mti_instance);
1923         __swab32s(&mti->mti_nid_count);
1924         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1925         for (i = 0; i < MTI_NIDS_MAX; i++)
1926                 __swab64s(&mti->mti_nids[i]);
1927 }
1928 EXPORT_SYMBOL(lustre_swab_mgs_target_info);
1929
1930 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1931 {
1932         int i;
1933
1934         __swab64s(&entry->mne_version);
1935         __swab32s(&entry->mne_instance);
1936         __swab32s(&entry->mne_index);
1937         __swab32s(&entry->mne_length);
1938
1939         /* mne_nid_(count|type) must be one byte size because we're gonna
1940          * access it w/o swapping. */
1941         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1942         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1943
1944         /* remove this assertion if ipv6 is supported. */
1945         LASSERT(entry->mne_nid_type == 0);
1946         for (i = 0; i < entry->mne_nid_count; i++) {
1947                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1948                 __swab64s(&entry->u.nids[i]);
1949         }
1950 }
1951 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1952
1953 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1954 {
1955         __swab64s(&body->mcb_offset);
1956         __swab32s(&body->mcb_units);
1957         __swab16s(&body->mcb_type);
1958 }
1959 EXPORT_SYMBOL(lustre_swab_mgs_config_body);
1960
1961 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1962 {
1963         __swab64s(&body->mcr_offset);
1964         __swab64s(&body->mcr_size);
1965 }
1966 EXPORT_SYMBOL(lustre_swab_mgs_config_res);
1967
1968 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1969 {
1970         __swab64s (&i->dqi_bgrace);
1971         __swab64s (&i->dqi_igrace);
1972         __swab32s (&i->dqi_flags);
1973         __swab32s (&i->dqi_valid);
1974 }
1975
1976 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1977 {
1978         __swab64s (&b->dqb_ihardlimit);
1979         __swab64s (&b->dqb_isoftlimit);
1980         __swab64s (&b->dqb_curinodes);
1981         __swab64s (&b->dqb_bhardlimit);
1982         __swab64s (&b->dqb_bsoftlimit);
1983         __swab64s (&b->dqb_curspace);
1984         __swab64s (&b->dqb_btime);
1985         __swab64s (&b->dqb_itime);
1986         __swab32s (&b->dqb_valid);
1987         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1988 }
1989
1990 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1991 {
1992         __swab32s (&q->qc_cmd);
1993         __swab32s (&q->qc_type);
1994         __swab32s (&q->qc_id);
1995         __swab32s (&q->qc_stat);
1996         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1997         lustre_swab_obd_dqblk (&q->qc_dqblk);
1998 }
1999 EXPORT_SYMBOL(lustre_swab_obd_quotactl);
2000
2001 void lustre_swab_mdt_remote_perm (struct mdt_remote_perm *p)
2002 {
2003         __swab32s (&p->rp_uid);
2004         __swab32s (&p->rp_gid);
2005         __swab32s (&p->rp_fsuid);
2006         __swab32s (&p->rp_fsuid_h);
2007         __swab32s (&p->rp_fsgid);
2008         __swab32s (&p->rp_fsgid_h);
2009         __swab32s (&p->rp_access_perm);
2010         __swab32s (&p->rp_padding);
2011 };
2012 EXPORT_SYMBOL(lustre_swab_mdt_remote_perm);
2013
2014 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2015 {
2016         lustre_swab_lu_fid(&gf->gf_fid);
2017         __swab64s(&gf->gf_recno);
2018         __swab32s(&gf->gf_linkno);
2019         __swab32s(&gf->gf_pathlen);
2020 }
2021 EXPORT_SYMBOL(lustre_swab_fid2path);
2022
2023 void lustre_swab_fiemap_extent(struct ll_fiemap_extent *fm_extent)
2024 {
2025         __swab64s(&fm_extent->fe_logical);
2026         __swab64s(&fm_extent->fe_physical);
2027         __swab64s(&fm_extent->fe_length);
2028         __swab32s(&fm_extent->fe_flags);
2029         __swab32s(&fm_extent->fe_device);
2030 }
2031
2032 void lustre_swab_fiemap(struct ll_user_fiemap *fiemap)
2033 {
2034         int i;
2035
2036         __swab64s(&fiemap->fm_start);
2037         __swab64s(&fiemap->fm_length);
2038         __swab32s(&fiemap->fm_flags);
2039         __swab32s(&fiemap->fm_mapped_extents);
2040         __swab32s(&fiemap->fm_extent_count);
2041         __swab32s(&fiemap->fm_reserved);
2042
2043         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2044                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2045 }
2046 EXPORT_SYMBOL(lustre_swab_fiemap);
2047
2048 void lustre_swab_idx_info(struct idx_info *ii)
2049 {
2050         __swab32s(&ii->ii_magic);
2051         __swab32s(&ii->ii_flags);
2052         __swab16s(&ii->ii_count);
2053         __swab32s(&ii->ii_attrs);
2054         lustre_swab_lu_fid(&ii->ii_fid);
2055         __swab64s(&ii->ii_version);
2056         __swab64s(&ii->ii_hash_start);
2057         __swab64s(&ii->ii_hash_end);
2058         __swab16s(&ii->ii_keysize);
2059         __swab16s(&ii->ii_recsize);
2060 }
2061
2062 void lustre_swab_lip_header(struct lu_idxpage *lip)
2063 {
2064         /* swab header */
2065         __swab32s(&lip->lip_magic);
2066         __swab16s(&lip->lip_flags);
2067         __swab16s(&lip->lip_nr);
2068 }
2069 EXPORT_SYMBOL(lustre_swab_lip_header);
2070
2071 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2072 {
2073         __swab32s(&rr->rr_opcode);
2074         __swab32s(&rr->rr_cap);
2075         __swab32s(&rr->rr_fsuid);
2076         /* rr_fsuid_h is unused */
2077         __swab32s(&rr->rr_fsgid);
2078         /* rr_fsgid_h is unused */
2079         __swab32s(&rr->rr_suppgid1);
2080         /* rr_suppgid1_h is unused */
2081         __swab32s(&rr->rr_suppgid2);
2082         /* rr_suppgid2_h is unused */
2083         lustre_swab_lu_fid(&rr->rr_fid1);
2084         lustre_swab_lu_fid(&rr->rr_fid2);
2085         __swab64s(&rr->rr_mtime);
2086         __swab64s(&rr->rr_atime);
2087         __swab64s(&rr->rr_ctime);
2088         __swab64s(&rr->rr_size);
2089         __swab64s(&rr->rr_blocks);
2090         __swab32s(&rr->rr_bias);
2091         __swab32s(&rr->rr_mode);
2092         __swab32s(&rr->rr_flags);
2093         __swab32s(&rr->rr_flags_h);
2094         __swab32s(&rr->rr_umask);
2095
2096         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2097 };
2098 EXPORT_SYMBOL(lustre_swab_mdt_rec_reint);
2099
2100 void lustre_swab_lov_desc (struct lov_desc *ld)
2101 {
2102         __swab32s (&ld->ld_tgt_count);
2103         __swab32s (&ld->ld_active_tgt_count);
2104         __swab32s (&ld->ld_default_stripe_count);
2105         __swab32s (&ld->ld_pattern);
2106         __swab64s (&ld->ld_default_stripe_size);
2107         __swab64s (&ld->ld_default_stripe_offset);
2108         __swab32s (&ld->ld_qos_maxage);
2109         /* uuid endian insensitive */
2110 }
2111 EXPORT_SYMBOL(lustre_swab_lov_desc);
2112
2113 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2114 {
2115         __swab32s (&ld->ld_tgt_count);
2116         __swab32s (&ld->ld_active_tgt_count);
2117         __swab32s (&ld->ld_default_stripe_count);
2118         __swab32s (&ld->ld_pattern);
2119         __swab64s (&ld->ld_default_hash_size);
2120         __swab32s (&ld->ld_qos_maxage);
2121         /* uuid endian insensitive */
2122 }
2123
2124 /* This structure is always in little-endian */
2125 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2126 {
2127         int i;
2128
2129         __swab32s(&lmm1->lmv_magic);
2130         __swab32s(&lmm1->lmv_stripe_count);
2131         __swab32s(&lmm1->lmv_master_mdt_index);
2132         __swab32s(&lmm1->lmv_hash_type);
2133         __swab32s(&lmm1->lmv_layout_version);
2134         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2135                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2136 }
2137
2138 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2139 {
2140         switch (lmm->lmv_magic) {
2141         case LMV_MAGIC_V1:
2142                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2143                 break;
2144         default:
2145                 break;
2146         }
2147 }
2148
2149 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2150 {
2151         int i;
2152
2153         __swab32s(&lum->lum_magic);
2154         __swab32s(&lum->lum_stripe_count);
2155         __swab32s(&lum->lum_stripe_offset);
2156         __swab32s(&lum->lum_hash_type);
2157         __swab32s(&lum->lum_type);
2158         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2159         for (i = 0; i < lum->lum_stripe_count; i++) {
2160                 __swab32s(&lum->lum_objects[i].lum_mds);
2161                 lustre_swab_lu_fid(&lum->lum_objects[i].lum_fid);
2162         }
2163
2164 }
2165 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2166
2167 static void print_lum (struct lov_user_md *lum)
2168 {
2169         CDEBUG(D_OTHER, "lov_user_md %p:\n", lum);
2170         CDEBUG(D_OTHER, "\tlmm_magic: %#x\n", lum->lmm_magic);
2171         CDEBUG(D_OTHER, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2172         CDEBUG(D_OTHER, "\tlmm_object_id: "LPU64"\n", lmm_oi_id(&lum->lmm_oi));
2173         CDEBUG(D_OTHER, "\tlmm_object_gr: "LPU64"\n", lmm_oi_seq(&lum->lmm_oi));
2174         CDEBUG(D_OTHER, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2175         CDEBUG(D_OTHER, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2176         CDEBUG(D_OTHER, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2177                         lum->lmm_stripe_offset);
2178 }
2179
2180 static void lustre_swab_lmm_oi(struct ost_id *oi)
2181 {
2182         __swab64s(&oi->oi.oi_id);
2183         __swab64s(&oi->oi.oi_seq);
2184 }
2185
2186 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2187 {
2188         ENTRY;
2189         __swab32s(&lum->lmm_magic);
2190         __swab32s(&lum->lmm_pattern);
2191         lustre_swab_lmm_oi(&lum->lmm_oi);
2192         __swab32s(&lum->lmm_stripe_size);
2193         __swab16s(&lum->lmm_stripe_count);
2194         __swab16s(&lum->lmm_stripe_offset);
2195         print_lum(lum);
2196         EXIT;
2197 }
2198
2199 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2200 {
2201         ENTRY;
2202         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2203         lustre_swab_lov_user_md_common(lum);
2204         EXIT;
2205 }
2206 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2207
2208 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2209 {
2210         ENTRY;
2211         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2212         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2213         /* lmm_pool_name nothing to do with char */
2214         EXIT;
2215 }
2216 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2217
2218 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2219 {
2220         ENTRY;
2221         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2222         __swab32s(&lmm->lmm_magic);
2223         __swab32s(&lmm->lmm_pattern);
2224         lustre_swab_lmm_oi(&lmm->lmm_oi);
2225         __swab32s(&lmm->lmm_stripe_size);
2226         __swab16s(&lmm->lmm_stripe_count);
2227         __swab16s(&lmm->lmm_layout_gen);
2228         EXIT;
2229 }
2230 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2231
2232 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2233                                      int stripe_count)
2234 {
2235         int i;
2236         ENTRY;
2237         for (i = 0; i < stripe_count; i++) {
2238                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2239                 __swab32s(&(lod[i].l_ost_gen));
2240                 __swab32s(&(lod[i].l_ost_idx));
2241         }
2242         EXIT;
2243 }
2244 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2245
2246 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2247 {
2248         int  i;
2249
2250         for (i = 0; i < RES_NAME_SIZE; i++)
2251                 __swab64s (&id->name[i]);
2252 }
2253 EXPORT_SYMBOL(lustre_swab_ldlm_res_id);
2254
2255 void lustre_swab_ldlm_policy_data (ldlm_wire_policy_data_t *d)
2256 {
2257         /* the lock data is a union and the first two fields are always an
2258          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2259          * data the same way. */
2260         __swab64s(&d->l_extent.start);
2261         __swab64s(&d->l_extent.end);
2262         __swab64s(&d->l_extent.gid);
2263         __swab64s(&d->l_flock.lfw_owner);
2264         __swab32s(&d->l_flock.lfw_pid);
2265 }
2266 EXPORT_SYMBOL(lustre_swab_ldlm_policy_data);
2267
2268 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2269 {
2270         __swab64s (&i->opc);
2271 }
2272 EXPORT_SYMBOL(lustre_swab_ldlm_intent);
2273
2274 void lustre_swab_ldlm_resource_desc (struct ldlm_resource_desc *r)
2275 {
2276         __swab32s (&r->lr_type);
2277         CLASSERT(offsetof(typeof(*r), lr_padding) != 0);
2278         lustre_swab_ldlm_res_id (&r->lr_name);
2279 }
2280 EXPORT_SYMBOL(lustre_swab_ldlm_resource_desc);
2281
2282 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2283 {
2284         lustre_swab_ldlm_resource_desc (&l->l_resource);
2285         __swab32s (&l->l_req_mode);
2286         __swab32s (&l->l_granted_mode);
2287         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2288 }
2289 EXPORT_SYMBOL(lustre_swab_ldlm_lock_desc);
2290
2291 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2292 {
2293         __swab32s (&rq->lock_flags);
2294         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2295         __swab32s (&rq->lock_count);
2296         /* lock_handle[] opaque */
2297 }
2298 EXPORT_SYMBOL(lustre_swab_ldlm_request);
2299
2300 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2301 {
2302         __swab32s (&r->lock_flags);
2303         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2304         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2305         /* lock_handle opaque */
2306         __swab64s (&r->lock_policy_res1);
2307         __swab64s (&r->lock_policy_res2);
2308 }
2309 EXPORT_SYMBOL(lustre_swab_ldlm_reply);
2310
2311 void lustre_swab_quota_body(struct quota_body *b)
2312 {
2313         lustre_swab_lu_fid(&b->qb_fid);
2314         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2315         __swab32s(&b->qb_flags);
2316         __swab64s(&b->qb_count);
2317         __swab64s(&b->qb_usage);
2318         __swab64s(&b->qb_slv_ver);
2319 }
2320
2321 /* Dump functions */
2322 void dump_ioo(struct obd_ioobj *ioo)
2323 {
2324         CDEBUG(D_RPCTRACE,
2325                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2326                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2327                ioo->ioo_bufcnt);
2328 }
2329 EXPORT_SYMBOL(dump_ioo);
2330
2331 void dump_rniobuf(struct niobuf_remote *nb)
2332 {
2333         CDEBUG(D_RPCTRACE, "niobuf_remote: offset="LPU64", len=%d, flags=%x\n",
2334                nb->offset, nb->len, nb->flags);
2335 }
2336 EXPORT_SYMBOL(dump_rniobuf);
2337
2338 void dump_obdo(struct obdo *oa)
2339 {
2340         __u32 valid = oa->o_valid;
2341
2342         CDEBUG(D_RPCTRACE, "obdo: o_valid = %08x\n", valid);
2343         if (valid & OBD_MD_FLID)
2344                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2345         if (valid & OBD_MD_FLFID)
2346                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = "LPX64"\n",
2347                        oa->o_parent_seq);
2348         if (valid & OBD_MD_FLSIZE)
2349                 CDEBUG(D_RPCTRACE, "obdo: o_size = "LPD64"\n", oa->o_size);
2350         if (valid & OBD_MD_FLMTIME)
2351                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = "LPD64"\n", oa->o_mtime);
2352         if (valid & OBD_MD_FLATIME)
2353                 CDEBUG(D_RPCTRACE, "obdo: o_atime = "LPD64"\n", oa->o_atime);
2354         if (valid & OBD_MD_FLCTIME)
2355                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = "LPD64"\n", oa->o_ctime);
2356         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2357                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = "LPD64"\n", oa->o_blocks);
2358         if (valid & OBD_MD_FLGRANT)
2359                 CDEBUG(D_RPCTRACE, "obdo: o_grant = "LPD64"\n", oa->o_grant);
2360         if (valid & OBD_MD_FLBLKSZ)
2361                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2362         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2363                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2364                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2365                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2366         if (valid & OBD_MD_FLUID)
2367                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2368         if (valid & OBD_MD_FLUID)
2369                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2370         if (valid & OBD_MD_FLGID)
2371                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2372         if (valid & OBD_MD_FLGID)
2373                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2374         if (valid & OBD_MD_FLFLAGS)
2375                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2376         if (valid & OBD_MD_FLNLINK)
2377                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2378         else if (valid & OBD_MD_FLCKSUM)
2379                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2380                        oa->o_nlink);
2381         if (valid & OBD_MD_FLGENER)
2382                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2383                        oa->o_parent_oid);
2384         if (valid & OBD_MD_FLEPOCH)
2385                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = "LPD64"\n",
2386                        oa->o_ioepoch);
2387         if (valid & OBD_MD_FLFID) {
2388                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2389                        oa->o_stripe_idx);
2390                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2391                        oa->o_parent_ver);
2392         }
2393         if (valid & OBD_MD_FLHANDLE)
2394                 CDEBUG(D_RPCTRACE, "obdo: o_handle = "LPD64"\n",
2395                        oa->o_handle.cookie);
2396         if (valid & OBD_MD_FLCOOKIE)
2397                 CDEBUG(D_RPCTRACE, "obdo: o_lcookie = "
2398                        "(llog_cookie dumping not yet implemented)\n");
2399 }
2400 EXPORT_SYMBOL(dump_obdo);
2401
2402 void dump_ost_body(struct ost_body *ob)
2403 {
2404         dump_obdo(&ob->oa);
2405 }
2406 EXPORT_SYMBOL(dump_ost_body);
2407
2408 void dump_rcs(__u32 *rc)
2409 {
2410         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2411 }
2412 EXPORT_SYMBOL(dump_rcs);
2413
2414 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2415 {
2416         LASSERT(req->rq_reqmsg);
2417
2418         switch (req->rq_reqmsg->lm_magic) {
2419         case LUSTRE_MSG_MAGIC_V2:
2420                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2421         default:
2422                 CERROR("bad lustre msg magic: %#08X\n",
2423                        req->rq_reqmsg->lm_magic);
2424         }
2425         return 0;
2426 }
2427
2428 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2429 {
2430         LASSERT(req->rq_repmsg);
2431
2432         switch (req->rq_repmsg->lm_magic) {
2433         case LUSTRE_MSG_MAGIC_V2:
2434                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2435         default:
2436                 /* uninitialized yet */
2437                 return 0;
2438         }
2439 }
2440
2441 void _debug_req(struct ptlrpc_request *req,
2442                 struct libcfs_debug_msg_data *msgdata,
2443                 const char *fmt, ... )
2444 {
2445         int req_ok = req->rq_reqmsg != NULL;
2446         int rep_ok = req->rq_repmsg != NULL;
2447         lnet_nid_t nid = LNET_NID_ANY;
2448         va_list args;
2449
2450         if (ptlrpc_req_need_swab(req)) {
2451                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2452                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2453         }
2454
2455         if (req->rq_import && req->rq_import->imp_connection)
2456                 nid = req->rq_import->imp_connection->c_peer.nid;
2457         else if (req->rq_export && req->rq_export->exp_connection)
2458                 nid = req->rq_export->exp_connection->c_peer.nid;
2459
2460         va_start(args, fmt);
2461         libcfs_debug_vmsg2(msgdata, fmt, args,
2462                            " req@%p x"LPU64"/t"LPD64"("LPD64") o%d->%s@%s:%d/%d"
2463                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2464                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2465                            req, req->rq_xid, req->rq_transno,
2466                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2467                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2468                            req->rq_import ?
2469                                 req->rq_import->imp_obd->obd_name :
2470                                 req->rq_export ?
2471                                         req->rq_export->exp_client_uuid.uuid :
2472                                         "<?>",
2473                            libcfs_nid2str(nid),
2474                            req->rq_request_portal, req->rq_reply_portal,
2475                            req->rq_reqlen, req->rq_replen,
2476                            req->rq_early_count, req->rq_timedout,
2477                            req->rq_deadline,
2478                            atomic_read(&req->rq_refcount),
2479                            DEBUG_REQ_FLAGS(req),
2480                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2481                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2482                            req->rq_status,
2483                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2484         va_end(args);
2485 }
2486 EXPORT_SYMBOL(_debug_req);
2487
2488 void lustre_swab_lustre_capa(struct lustre_capa *c)
2489 {
2490         lustre_swab_lu_fid(&c->lc_fid);
2491         __swab64s (&c->lc_opc);
2492         __swab64s (&c->lc_uid);
2493         __swab64s (&c->lc_gid);
2494         __swab32s (&c->lc_flags);
2495         __swab32s (&c->lc_keyid);
2496         __swab32s (&c->lc_timeout);
2497         __swab32s (&c->lc_expiry);
2498 }
2499 EXPORT_SYMBOL(lustre_swab_lustre_capa);
2500
2501 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2502 {
2503         __swab64s (&k->lk_seq);
2504         __swab32s (&k->lk_keyid);
2505         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2506 }
2507 EXPORT_SYMBOL(lustre_swab_lustre_capa_key);
2508
2509 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2510 {
2511         __swab32s(&state->hus_states);
2512         __swab32s(&state->hus_archive_id);
2513 }
2514 EXPORT_SYMBOL(lustre_swab_hsm_user_state);
2515
2516 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2517 {
2518         __swab32s(&hss->hss_valid);
2519         __swab64s(&hss->hss_setmask);
2520         __swab64s(&hss->hss_clearmask);
2521         __swab32s(&hss->hss_archive_id);
2522 }
2523 EXPORT_SYMBOL(lustre_swab_hsm_state_set);
2524
2525 void lustre_swab_hsm_extent(struct hsm_extent *extent)
2526 {
2527         __swab64s(&extent->offset);
2528         __swab64s(&extent->length);
2529 }
2530
2531 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2532 {
2533         __swab32s(&action->hca_state);
2534         __swab32s(&action->hca_action);
2535         lustre_swab_hsm_extent(&action->hca_location);
2536 }
2537 EXPORT_SYMBOL(lustre_swab_hsm_current_action);
2538
2539 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2540 {
2541         lustre_swab_lu_fid(&hui->hui_fid);
2542         lustre_swab_hsm_extent(&hui->hui_extent);
2543 }
2544 EXPORT_SYMBOL(lustre_swab_hsm_user_item);
2545
2546 void lustre_swab_layout_intent(struct layout_intent *li)
2547 {
2548         __swab32s(&li->li_opc);
2549         __swab32s(&li->li_flags);
2550         __swab64s(&li->li_start);
2551         __swab64s(&li->li_end);
2552 }
2553 EXPORT_SYMBOL(lustre_swab_layout_intent);
2554
2555 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2556 {
2557         lustre_swab_lu_fid(&hpk->hpk_fid);
2558         __swab64s(&hpk->hpk_cookie);
2559         __swab64s(&hpk->hpk_extent.offset);
2560         __swab64s(&hpk->hpk_extent.length);
2561         __swab16s(&hpk->hpk_flags);
2562         __swab16s(&hpk->hpk_errval);
2563 }
2564 EXPORT_SYMBOL(lustre_swab_hsm_progress_kernel);
2565
2566 void lustre_swab_hsm_request(struct hsm_request *hr)
2567 {
2568         __swab32s(&hr->hr_action);
2569         __swab32s(&hr->hr_archive_id);
2570         __swab64s(&hr->hr_flags);
2571         __swab32s(&hr->hr_itemcount);
2572         __swab32s(&hr->hr_data_len);
2573 }
2574 EXPORT_SYMBOL(lustre_swab_hsm_request);
2575
2576 void lustre_swab_object_update(struct object_update *ou)
2577 {
2578         struct object_update_param *param;
2579         int     i;
2580
2581         __swab16s(&ou->ou_type);
2582         __swab16s(&ou->ou_params_count);
2583         __swab32s(&ou->ou_master_index);
2584         __swab32s(&ou->ou_flags);
2585         __swab32s(&ou->ou_padding1);
2586         __swab64s(&ou->ou_batchid);
2587         lustre_swab_lu_fid(&ou->ou_fid);
2588         param = &ou->ou_params[0];
2589         for (i = 0; i < ou->ou_params_count; i++) {
2590                 __swab16s(&param->oup_len);
2591                 __swab16s(&param->oup_padding);
2592                 __swab32s(&param->oup_padding2);
2593                 param = (struct object_update_param *)((char *)param +
2594                          object_update_param_size(param));
2595         }
2596 }
2597 EXPORT_SYMBOL(lustre_swab_object_update);
2598
2599 void lustre_swab_object_update_request(struct object_update_request *our)
2600 {
2601         int i;
2602         __swab32s(&our->ourq_magic);
2603         __swab16s(&our->ourq_count);
2604         __swab16s(&our->ourq_padding);
2605         for (i = 0; i < our->ourq_count; i++) {
2606                 struct object_update *ou;
2607
2608                 ou = object_update_request_get(our, i, NULL);
2609                 if (ou == NULL)
2610                         return;
2611                 lustre_swab_object_update(ou);
2612         }
2613 }
2614 EXPORT_SYMBOL(lustre_swab_object_update_request);
2615
2616 void lustre_swab_object_update_result(struct object_update_result *our)
2617 {
2618         __swab32s(&our->our_rc);
2619         __swab16s(&our->our_datalen);
2620         __swab16s(&our->our_padding);
2621 }
2622 EXPORT_SYMBOL(lustre_swab_object_update_result);
2623
2624 void lustre_swab_object_update_reply(struct object_update_reply *our)
2625 {
2626         int i;
2627
2628         __swab32s(&our->ourp_magic);
2629         __swab16s(&our->ourp_count);
2630         __swab16s(&our->ourp_padding);
2631         for (i = 0; i < our->ourp_count; i++) {
2632                 struct object_update_result *ourp;
2633
2634                 __swab16s(&our->ourp_lens[i]);
2635                 ourp = object_update_result_get(our, i, NULL);
2636                 if (ourp == NULL)
2637                         return;
2638                 lustre_swab_object_update_result(ourp);
2639         }
2640 }
2641 EXPORT_SYMBOL(lustre_swab_object_update_reply);
2642
2643 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2644 {
2645         __swab64s(&msl->msl_flags);
2646 }
2647 EXPORT_SYMBOL(lustre_swab_swap_layouts);
2648
2649 void lustre_swab_close_data(struct close_data *cd)
2650 {
2651         lustre_swab_lu_fid(&cd->cd_fid);
2652         __swab64s(&cd->cd_data_version);
2653 }
2654 EXPORT_SYMBOL(lustre_swab_close_data);
2655
2656 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2657 {
2658         __swab32s(&lr->lr_event);
2659         __swab32s(&lr->lr_index);
2660         __swab32s(&lr->lr_flags);
2661         __swab32s(&lr->lr_valid);
2662         __swab32s(&lr->lr_speed);
2663         __swab16s(&lr->lr_version);
2664         __swab16s(&lr->lr_active);
2665         __swab16s(&lr->lr_param);
2666         __swab16s(&lr->lr_async_windows);
2667         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2668         lustre_swab_lu_fid(&lr->lr_fid);
2669         lustre_swab_lu_fid(&lr->lr_fid2);
2670         lustre_swab_lu_fid(&lr->lr_fid3);
2671         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2672         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2673 }
2674 EXPORT_SYMBOL(lustre_swab_lfsck_request);
2675
2676 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2677 {
2678         __swab32s(&lr->lr_status);
2679         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2680         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2681 }
2682 EXPORT_SYMBOL(lustre_swab_lfsck_reply);
2683
2684 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2685 {
2686         lustre_swab_lu_fid(&ent->loe_key);
2687         lustre_swab_lu_fid(&ent->loe_rec.lor_fid);
2688         __swab32s(&ent->loe_rec.lor_uid);
2689         __swab32s(&ent->loe_rec.lor_gid);
2690 }
2691 EXPORT_SYMBOL(lustre_swab_orphan_ent);