lustre/ptlrpc/pack_generic.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  *
  31  * lustre/ptlrpc/pack_generic.c
  32  *
  33  * (Un)packing of OST requests
  34  *
  35  * Author: Peter J. Braam <braam@clusterfs.com>
  36  * Author: Phil Schwan <phil@clusterfs.com>
  37  * Author: Eric Barton <eeb@clusterfs.com>
  38  */
  39
  40 #define DEBUG_SUBSYSTEM S_RPC
  41
  42 #include <linux/crc32.h>
  43
  44 #include <libcfs/libcfs.h>
  45
  46 #include <llog_swab.h>
  47 #include <lustre_net.h>
  48 #include <lustre_swab.h>
  49 #include <obd_cksum.h>
  50 #include <obd_class.h>
  51 #include <obd_support.h>
  52 #include "ptlrpc_internal.h"
  53
  54 static inline __u32 lustre_msg_hdr_size_v2(__u32 count)
  55 {
  56         return cfs_size_round(offsetof(struct lustre_msg_v2,
  57                                        lm_buflens[count]));
  58 }
  59
  60 __u32 lustre_msg_hdr_size(__u32 magic, __u32 count)
  61 {
  62         LASSERT(count > 0);
  63
  64         switch (magic) {
  65         case LUSTRE_MSG_MAGIC_V2:
  66                 return lustre_msg_hdr_size_v2(count);
  67         default:
  68                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  69                 return 0;
  70         }
  71 }
  72
  73 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  74                                               enum lustre_msg_version version)
  75 {
  76         enum lustre_msg_version ver = lustre_msg_get_version(msg);
  77
  78         return (ver & LUSTRE_VERSION_MASK) != version;
  79 }
  80
  81 int lustre_msg_check_version(struct lustre_msg *msg,
  82                              enum lustre_msg_version version)
  83 {
  84 #define LUSTRE_MSG_MAGIC_V1 0x0BD00BD0
  85         switch (msg->lm_magic) {
  86         case LUSTRE_MSG_MAGIC_V1:
  87                 CERROR("msg v1 not supported - please upgrade you system\n");
  88                 return -EINVAL;
  89         case LUSTRE_MSG_MAGIC_V2:
  90                 return lustre_msg_check_version_v2(msg, version);
  91         default:
  92                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
  93                 return -EPROTO;
  94         }
  95 #undef LUSTRE_MSG_MAGIC_V1
  96 }
  97
  98 /* early reply size */
  99 __u32 lustre_msg_early_size()
 100 {
 101         __u32 pblen = sizeof(struct ptlrpc_body);
 102
 103         return lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 104 }
 105 EXPORT_SYMBOL(lustre_msg_early_size);
 106
 107 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
 108 {
 109         __u32 size;
 110         int i;
 111
 112         LASSERT(count > 0);
 113         size = lustre_msg_hdr_size_v2(count);
 114         for (i = 0; i < count; i++)
 115                 size += cfs_size_round(lengths[i]);
 116
 117         return size;
 118 }
 119 EXPORT_SYMBOL(lustre_msg_size_v2);
 120
 121 /*
 122  * This returns the size of the buffer that is required to hold a lustre_msg
 123  * with the given sub-buffer lengths.
 124  * NOTE: this should only be used for NEW requests, and should always be
 125  *       in the form of a v2 request.  If this is a connection to a v1
 126  *       target then the first buffer will be stripped because the ptlrpc
 127  *       data is part of the lustre_msg_v1 header. b=14043
 128  */
 129 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 130 {
 131         __u32 size[] = { sizeof(struct ptlrpc_body) };
 132
 133         if (!lens) {
 134                 LASSERT(count == 1);
 135                 lens = size;
 136         }
 137
 138         LASSERT(count > 0);
 139         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 140
 141         switch (magic) {
 142         case LUSTRE_MSG_MAGIC_V2:
 143                 return lustre_msg_size_v2(count, lens);
 144         default:
 145                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 146                 return 0;
 147         }
 148 }
 149
 150 /*
 151  * This is used to determine the size of a buffer that was already packed
 152  * and will correctly handle the different message formats.
 153  */
 154 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 155 {
 156         switch (msg->lm_magic) {
 157         case LUSTRE_MSG_MAGIC_V2:
 158                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 159         default:
 160                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 161                 return 0;
 162         }
 163 }
 164 EXPORT_SYMBOL(lustre_packed_msg_size);
 165
 166 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 167                         char **bufs)
 168 {
 169         char *ptr;
 170         int i;
 171
 172         LASSERT(count > 0);
 173
 174         msg->lm_bufcount = count;
 175         /* XXX: lm_secflvr uninitialized here */
 176         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 177
 178         for (i = 0; i < count; i++)
 179                 msg->lm_buflens[i] = lens[i];
 180
 181         if (bufs == NULL)
 182                 return;
 183
 184         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 185         for (i = 0; i < count; i++) {
 186                 char *tmp = bufs[i];
 187
 188                 if (tmp)
 189                         memcpy(ptr, tmp, lens[i]);
 190                 ptr += cfs_size_round(lens[i]);
 191         }
 192 }
 193 EXPORT_SYMBOL(lustre_init_msg_v2);
 194
 195 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 196                                   int count, __u32 *lens, char **bufs)
 197 {
 198         int reqlen, rc;
 199
 200         reqlen = lustre_msg_size_v2(count, lens);
 201
 202         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 203         if (rc)
 204                 return rc;
 205
 206         req->rq_reqlen = reqlen;
 207
 208         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 209         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 210         return 0;
 211 }
 212
 213 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 214                         __u32 *lens, char **bufs)
 215 {
 216         __u32 size[] = { sizeof(struct ptlrpc_body) };
 217
 218         if (!lens) {
 219                 LASSERT(count == 1);
 220                 lens = size;
 221         }
 222
 223         LASSERT(count > 0);
 224         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 225
 226         /* only use new format, we don't need to be compatible with 1.4 */
 227         magic = LUSTRE_MSG_MAGIC_V2;
 228
 229         switch (magic) {
 230         case LUSTRE_MSG_MAGIC_V2:
 231                 return lustre_pack_request_v2(req, count, lens, bufs);
 232         default:
 233                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 234                 return -EINVAL;
 235         }
 236 }
 237
 238 #if RS_DEBUG
 239 struct list_head ptlrpc_rs_debug_lru =
 240         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 241 spinlock_t ptlrpc_rs_debug_lock;
 242
 243 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 244 do {                                                                    \
 245         spin_lock(&ptlrpc_rs_debug_lock);                               \
 246         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 247         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 248 } while (0)
 249
 250 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 251 do {                                                                    \
 252         spin_lock(&ptlrpc_rs_debug_lock);                               \
 253         list_del(&(rs)->rs_debug_list);                         \
 254         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 255 } while (0)
 256 #else
 257 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 258 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 259 #endif
 260
 261 struct ptlrpc_reply_state *
 262 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 263 {
 264         struct ptlrpc_reply_state *rs = NULL;
 265
 266         spin_lock(&svcpt->scp_rep_lock);
 267
 268         /* See if we have anything in a pool, and wait if nothing */
 269         while (list_empty(&svcpt->scp_rep_idle)) {
 270                 int                     rc;
 271
 272                 spin_unlock(&svcpt->scp_rep_lock);
 273                 /* If we cannot get anything for some long time, we better
 274                  * bail out instead of waiting infinitely */
 275                 rc = wait_event_idle_timeout(svcpt->scp_rep_waitq,
 276                                              !list_empty(&svcpt->scp_rep_idle),
 277                                              cfs_time_seconds(10));
 278                 if (rc <= 0)
 279                         goto out;
 280                 spin_lock(&svcpt->scp_rep_lock);
 281         }
 282
 283         rs = list_first_entry(&svcpt->scp_rep_idle,
 284                               struct ptlrpc_reply_state, rs_list);
 285         list_del(&rs->rs_list);
 286
 287         spin_unlock(&svcpt->scp_rep_lock);
 288
 289         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 290         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 291         rs->rs_svcpt = svcpt;
 292         rs->rs_prealloc = 1;
 293 out:
 294         return rs;
 295 }
 296
 297 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 298 {
 299         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 300
 301         spin_lock(&svcpt->scp_rep_lock);
 302         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 303         spin_unlock(&svcpt->scp_rep_lock);
 304         wake_up(&svcpt->scp_rep_waitq);
 305 }
 306
 307 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 308                          __u32 *lens, char **bufs, int flags)
 309 {
 310         struct ptlrpc_reply_state *rs;
 311         int msg_len, rc;
 312         ENTRY;
 313
 314         LASSERT(req->rq_reply_state == NULL);
 315         LASSERT(count > 0);
 316
 317         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 318                 spin_lock(&req->rq_lock);
 319                 req->rq_packed_final = 1;
 320                 spin_unlock(&req->rq_lock);
 321         }
 322
 323         msg_len = lustre_msg_size_v2(count, lens);
 324         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 325         if (rc)
 326                 RETURN(rc);
 327
 328         rs = req->rq_reply_state;
 329         atomic_set(&rs->rs_refcount, 1); /* 1 ref for rq_reply_state */
 330         rs->rs_cb_id.cbid_fn = reply_out_callback;
 331         rs->rs_cb_id.cbid_arg = rs;
 332         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 333         INIT_LIST_HEAD(&rs->rs_exp_list);
 334         INIT_LIST_HEAD(&rs->rs_obd_list);
 335         INIT_LIST_HEAD(&rs->rs_list);
 336         spin_lock_init(&rs->rs_lock);
 337
 338         req->rq_replen = msg_len;
 339         req->rq_reply_state = rs;
 340         req->rq_repmsg = rs->rs_msg;
 341
 342         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 343         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 344
 345         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 346
 347         RETURN(0);
 348 }
 349 EXPORT_SYMBOL(lustre_pack_reply_v2);
 350
 351 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 352                             char **bufs, int flags)
 353 {
 354         int rc = 0;
 355         __u32 size[] = { sizeof(struct ptlrpc_body) };
 356
 357         if (!lens) {
 358                 LASSERT(count == 1);
 359                 lens = size;
 360         }
 361
 362         LASSERT(count > 0);
 363         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 364
 365         switch (req->rq_reqmsg->lm_magic) {
 366         case LUSTRE_MSG_MAGIC_V2:
 367                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 368                 break;
 369         default:
 370                 LASSERTF(0, "incorrect message magic: %08x\n",
 371                          req->rq_reqmsg->lm_magic);
 372                 rc = -EINVAL;
 373         }
 374         if (rc != 0)
 375                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 376                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 377         return rc;
 378 }
 379
 380 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 381                       char **bufs)
 382 {
 383         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 384 }
 385 EXPORT_SYMBOL(lustre_pack_reply);
 386
 387 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
 388 {
 389         __u32 i, offset, buflen, bufcount;
 390
 391         LASSERT(m != NULL);
 392         LASSERT(m->lm_bufcount > 0);
 393
 394         bufcount = m->lm_bufcount;
 395         if (unlikely(n >= bufcount)) {
 396                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 397                        m, n, bufcount);
 398                 return NULL;
 399         }
 400
 401         buflen = m->lm_buflens[n];
 402         if (unlikely(buflen < min_size)) {
 403                 CERROR("msg %p buffer[%d] size %d too small "
 404                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 405                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 406                 return NULL;
 407         }
 408
 409         offset = lustre_msg_hdr_size_v2(bufcount);
 410         for (i = 0; i < n; i++)
 411                 offset += cfs_size_round(m->lm_buflens[i]);
 412
 413         return (char *)m + offset;
 414 }
 415
 416 void *lustre_msg_buf(struct lustre_msg *m, __u32 n, __u32 min_size)
 417 {
 418         switch (m->lm_magic) {
 419         case LUSTRE_MSG_MAGIC_V2:
 420                 return lustre_msg_buf_v2(m, n, min_size);
 421         default:
 422                 LASSERTF(0, "incorrect message magic: %08x (msg:%p)\n",
 423                          m->lm_magic, m);
 424                 return NULL;
 425         }
 426 }
 427 EXPORT_SYMBOL(lustre_msg_buf);
 428
 429 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 430                                 unsigned int newlen, int move_data)
 431 {
 432         char *tail = NULL, *newpos;
 433         int tail_len = 0, n;
 434
 435         LASSERT(msg);
 436         LASSERT(msg->lm_bufcount > segment);
 437         LASSERT(msg->lm_buflens[segment] >= newlen);
 438
 439         if (msg->lm_buflens[segment] == newlen)
 440                 goto out;
 441
 442         if (move_data && msg->lm_bufcount > segment + 1) {
 443                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 444                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 445                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 446         }
 447
 448         msg->lm_buflens[segment] = newlen;
 449
 450         if (tail && tail_len) {
 451                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 452                 LASSERT(newpos <= tail);
 453                 if (newpos != tail)
 454                         memmove(newpos, tail, tail_len);
 455         }
 456 out:
 457         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 458 }
 459
 460 /*
 461  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 462  * we also move data forward from @segment + 1.
 463  *
 464  * if @newlen == 0, we remove the segment completely, but we still keep the
 465  * totally bufcount the same to save possible data moving. this will leave a
 466  * unused segment with size 0 at the tail, but that's ok.
 467  *
 468  * return new msg size after shrinking.
 469  *
 470  * CAUTION:
 471  * + if any buffers higher than @segment has been filled in, must call shrink
 472  *   with non-zero @move_data.
 473  * + caller should NOT keep pointers to msg buffers which higher than @segment
 474  *   after call shrink.
 475  */
 476 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 477                       unsigned int newlen, int move_data)
 478 {
 479         switch (msg->lm_magic) {
 480         case LUSTRE_MSG_MAGIC_V2:
 481                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 482         default:
 483                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 484         }
 485 }
 486 EXPORT_SYMBOL(lustre_shrink_msg);
 487
 488 static int lustre_grow_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 489                               unsigned int newlen)
 490 {
 491         char *tail = NULL, *newpos;
 492         int tail_len = 0, n;
 493
 494         LASSERT(msg);
 495         LASSERT(msg->lm_bufcount > segment);
 496         LASSERT(msg->lm_buflens[segment] <= newlen);
 497
 498         if (msg->lm_buflens[segment] == newlen)
 499                 goto out;
 500
 501         if (msg->lm_bufcount > segment + 1) {
 502                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 503                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 504                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 505         }
 506
 507         msg->lm_buflens[segment] = newlen;
 508
 509         if (tail && tail_len) {
 510                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 511                 memmove(newpos, tail, tail_len);
 512         }
 513 out:
 514         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 515 }
 516
 517 /*
 518  * for @msg, grow @segment to size @newlen.
 519  * Always move higher buffer forward.
 520  *
 521  * return new msg size after growing.
 522  *
 523  * CAUTION:
 524  * - caller must make sure there is enough space in allocated message buffer
 525  * - caller should NOT keep pointers to msg buffers which higher than @segment
 526  *   after call shrink.
 527  */
 528 int lustre_grow_msg(struct lustre_msg *msg, int segment, unsigned int newlen)
 529 {
 530         switch (msg->lm_magic) {
 531         case LUSTRE_MSG_MAGIC_V2:
 532                 return lustre_grow_msg_v2(msg, segment, newlen);
 533         default:
 534                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 535         }
 536 }
 537 EXPORT_SYMBOL(lustre_grow_msg);
 538
 539 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 540 {
 541         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 542
 543         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 544         LASSERT(!rs->rs_difficult || rs->rs_handled);
 545         LASSERT(!rs->rs_on_net);
 546         LASSERT(!rs->rs_scheduled);
 547         LASSERT(rs->rs_export == NULL);
 548         LASSERT(rs->rs_nlocks == 0);
 549         LASSERT(list_empty(&rs->rs_exp_list));
 550         LASSERT(list_empty(&rs->rs_obd_list));
 551
 552         sptlrpc_svc_free_rs(rs);
 553 }
 554
 555 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 556 {
 557         int swabbed, required_len, i, buflen;
 558
 559         /* Now we know the sender speaks my language. */
 560         required_len = lustre_msg_hdr_size_v2(0);
 561         if (len < required_len) {
 562                 /* can't even look inside the message */
 563                 CERROR("message length %d too small for lustre_msg\n", len);
 564                 return -EINVAL;
 565         }
 566
 567         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 568
 569         if (swabbed) {
 570                 __swab32s(&m->lm_magic);
 571                 __swab32s(&m->lm_bufcount);
 572                 __swab32s(&m->lm_secflvr);
 573                 __swab32s(&m->lm_repsize);
 574                 __swab32s(&m->lm_cksum);
 575                 __swab32s(&m->lm_flags);
 576                 BUILD_BUG_ON(offsetof(typeof(*m), lm_padding_2) == 0);
 577                 BUILD_BUG_ON(offsetof(typeof(*m), lm_padding_3) == 0);
 578         }
 579
 580         if (m->lm_bufcount == 0 || m->lm_bufcount > PTLRPC_MAX_BUFCOUNT) {
 581                 CERROR("message bufcount %d is not valid\n", m->lm_bufcount);
 582                 return -EINVAL;
 583         }
 584         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 585         if (len < required_len) {
 586                 /* didn't receive all the buffer lengths */
 587                 CERROR("message length %d too small for %d buflens\n",
 588                        len, m->lm_bufcount);
 589                 return -EINVAL;
 590         }
 591
 592         for (i = 0; i < m->lm_bufcount; i++) {
 593                 if (swabbed)
 594                         __swab32s(&m->lm_buflens[i]);
 595                 buflen = cfs_size_round(m->lm_buflens[i]);
 596                 if (buflen < 0 || buflen > PTLRPC_MAX_BUFLEN) {
 597                         CERROR("buffer %d length %d is not valid\n", i, buflen);
 598                         return -EINVAL;
 599                 }
 600                 required_len += buflen;
 601         }
 602         if (len < required_len || required_len > PTLRPC_MAX_BUFLEN) {
 603                 CERROR("len: %d, required_len %d, bufcount: %d\n",
 604                        len, required_len, m->lm_bufcount);
 605                 for (i = 0; i < m->lm_bufcount; i++)
 606                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 607                 return -EINVAL;
 608         }
 609
 610         return swabbed;
 611 }
 612
 613 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 614 {
 615         int required_len, rc;
 616
 617         ENTRY;
 618         /*
 619          * We can provide a slightly better error log, if we check the
 620          * message magic and version first.  In the future, struct
 621          * lustre_msg may grow, and we'd like to log a version mismatch,
 622          * rather than a short message.
 623          */
 624         required_len = offsetof(struct lustre_msg, lm_magic) +
 625                                 sizeof(m->lm_magic);
 626         if (len < required_len) {
 627                 /* can't even look inside the message */
 628                 CERROR("message length %d too small for magic/version check\n",
 629                        len);
 630                 RETURN(-EINVAL);
 631         }
 632
 633         rc = lustre_unpack_msg_v2(m, len);
 634
 635         RETURN(rc);
 636 }
 637 EXPORT_SYMBOL(__lustre_unpack_msg);
 638
 639 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 640 {
 641         int rc;
 642
 643         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 644         if (rc == 1) {
 645                 req_capsule_set_req_swabbed(&req->rq_pill,
 646                                             MSG_PTLRPC_HEADER_OFF);
 647                 rc = 0;
 648         }
 649         return rc;
 650 }
 651
 652 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 653 {
 654         int rc;
 655
 656         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 657         if (rc == 1) {
 658                 req_capsule_set_rep_swabbed(&req->rq_pill,
 659                                             MSG_PTLRPC_HEADER_OFF);
 660                 rc = 0;
 661         }
 662         return rc;
 663 }
 664
 665 static inline int
 666 lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 667                              enum req_location loc, int offset)
 668 {
 669         struct ptlrpc_body *pb;
 670         struct lustre_msg_v2 *m;
 671
 672         m = loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
 673
 674         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 675         if (!pb) {
 676                 CERROR("error unpacking ptlrpc body\n");
 677                 return -EFAULT;
 678         }
 679         if (req_capsule_need_swab(&req->rq_pill, loc, offset)) {
 680                 lustre_swab_ptlrpc_body(pb);
 681                 req_capsule_set_swabbed(&req->rq_pill, loc, offset);
 682         }
 683
 684         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 685                 CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 686                 return -EINVAL;
 687         }
 688
 689         if (loc == RCL_SERVER)
 690                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 691
 692         return 0;
 693 }
 694
 695 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 696 {
 697         switch (req->rq_reqmsg->lm_magic) {
 698         case LUSTRE_MSG_MAGIC_V2:
 699                 return lustre_unpack_ptlrpc_body_v2(req, RCL_CLIENT, offset);
 700         default:
 701                 CERROR("bad lustre msg magic: %08x\n",
 702                        req->rq_reqmsg->lm_magic);
 703                 return -EINVAL;
 704         }
 705 }
 706
 707 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 708 {
 709         switch (req->rq_repmsg->lm_magic) {
 710         case LUSTRE_MSG_MAGIC_V2:
 711                 return lustre_unpack_ptlrpc_body_v2(req, RCL_SERVER, offset);
 712         default:
 713                 CERROR("bad lustre msg magic: %08x\n",
 714                        req->rq_repmsg->lm_magic);
 715                 return -EINVAL;
 716         }
 717 }
 718
 719 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 720 {
 721         if (n >= m->lm_bufcount)
 722                 return 0;
 723
 724         return m->lm_buflens[n];
 725 }
 726
 727 /**
 728  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 729  * \param m lustre_msg (request or reply) to look at
 730  * \param n message index (base 0)
 731  *
 732  * returns zero for non-existent message indices
 733  */
 734 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 735 {
 736         switch (m->lm_magic) {
 737         case LUSTRE_MSG_MAGIC_V2:
 738                 return lustre_msg_buflen_v2(m, n);
 739         default:
 740                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 741                 return 0;
 742         }
 743 }
 744 EXPORT_SYMBOL(lustre_msg_buflen);
 745
 746 static inline void
 747 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 748 {
 749         if (n >= m->lm_bufcount)
 750                 LBUG();
 751
 752         m->lm_buflens[n] = len;
 753 }
 754
 755 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 756 {
 757         switch (m->lm_magic) {
 758         case LUSTRE_MSG_MAGIC_V2:
 759                 lustre_msg_set_buflen_v2(m, n, len);
 760                 return;
 761         default:
 762                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 763         }
 764 }
 765
 766 /*
 767  * NB return the bufcount for lustre_msg_v2 format, so if message is packed
 768  * in V1 format, the result is one bigger. (add struct ptlrpc_body).
 769  */
 770 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 771 {
 772         switch (m->lm_magic) {
 773         case LUSTRE_MSG_MAGIC_V2:
 774                 return m->lm_bufcount;
 775         default:
 776                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 777                 return 0;
 778         }
 779 }
 780
 781 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 782 {
 783         /* max_len == 0 means the string should fill the buffer */
 784         char *str;
 785         __u32 slen, blen;
 786
 787         switch (m->lm_magic) {
 788         case LUSTRE_MSG_MAGIC_V2:
 789                 str = lustre_msg_buf_v2(m, index, 0);
 790                 blen = lustre_msg_buflen_v2(m, index);
 791                 break;
 792         default:
 793                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 794         }
 795
 796         if (str == NULL) {
 797                 CERROR("can't unpack string in msg %p buffer[%d]\n", m, index);
 798                 return NULL;
 799         }
 800
 801         slen = strnlen(str, blen);
 802
 803         if (slen == blen) { /* not NULL terminated */
 804                 CERROR("can't unpack non-NULL terminated string in msg %p buffer[%d] len %d\n",
 805                        m, index, blen);
 806                 return NULL;
 807         }
 808         if (blen > PTLRPC_MAX_BUFLEN) {
 809                 CERROR("buffer length of msg %p buffer[%d] is invalid(%d)\n",
 810                        m, index, blen);
 811                 return NULL;
 812         }
 813
 814         if (max_len == 0) {
 815                 if (slen != blen - 1) {
 816                         CERROR("can't unpack short string in msg %p buffer[%d] len %d: strlen %d\n",
 817                                m, index, blen, slen);
 818                         return NULL;
 819                 }
 820         } else if (slen > max_len) {
 821                 CERROR("can't unpack oversized string in msg %p buffer[%d] len %d strlen %d: max %d expected\n",
 822                        m, index, blen, slen, max_len);
 823                 return NULL;
 824         }
 825
 826         return str;
 827 }
 828
 829 /* Wrap up the normal fixed length cases */
 830 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 831                                       __u32 min_size, void *swabber)
 832 {
 833         void *ptr = NULL;
 834
 835         LASSERT(msg != NULL);
 836         switch (msg->lm_magic) {
 837         case LUSTRE_MSG_MAGIC_V2:
 838                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 839                 break;
 840         default:
 841                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 842         }
 843
 844         if (ptr != NULL && swabber != NULL)
 845                 ((void (*)(void *))swabber)(ptr);
 846
 847         return ptr;
 848 }
 849
 850 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 851 {
 852         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 853                                  sizeof(struct ptlrpc_body_v2));
 854 }
 855
 856 enum lustre_msghdr lustre_msghdr_get_flags(struct lustre_msg *msg)
 857 {
 858         switch (msg->lm_magic) {
 859         case LUSTRE_MSG_MAGIC_V2:
 860                 /* already in host endian */
 861                 return msg->lm_flags;
 862         default:
 863                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 864                 return 0;
 865         }
 866 }
 867 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 868
 869 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 870 {
 871         switch (msg->lm_magic) {
 872         case LUSTRE_MSG_MAGIC_V2:
 873                 msg->lm_flags = flags;
 874                 return;
 875         default:
 876                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 877         }
 878 }
 879
 880 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 881 {
 882         switch (msg->lm_magic) {
 883         case LUSTRE_MSG_MAGIC_V2: {
 884                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 885                 if (pb != NULL)
 886                         return pb->pb_flags;
 887
 888                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 889         }
 890         /* fallthrough */
 891         default:
 892                 /*
 893                  * flags might be printed in debug code while message
 894                  * uninitialized
 895                  */
 896                 return 0;
 897         }
 898 }
 899 EXPORT_SYMBOL(lustre_msg_get_flags);
 900
 901 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 902 {
 903         switch (msg->lm_magic) {
 904         case LUSTRE_MSG_MAGIC_V2: {
 905                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 906                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 907                 pb->pb_flags |= flags;
 908                 return;
 909         }
 910         default:
 911                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 912         }
 913 }
 914 EXPORT_SYMBOL(lustre_msg_add_flags);
 915
 916 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
 917 {
 918         switch (msg->lm_magic) {
 919         case LUSTRE_MSG_MAGIC_V2: {
 920                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 921                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 922                 pb->pb_flags = flags;
 923                 return;
 924         }
 925         default:
 926                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 927         }
 928 }
 929
 930 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 931 {
 932         switch (msg->lm_magic) {
 933         case LUSTRE_MSG_MAGIC_V2: {
 934                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 935                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 936                 pb->pb_flags &= ~flags;
 937
 938                 return;
 939         }
 940         default:
 941                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 942         }
 943 }
 944 EXPORT_SYMBOL(lustre_msg_clear_flags);
 945
 946 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 947 {
 948         switch (msg->lm_magic) {
 949         case LUSTRE_MSG_MAGIC_V2: {
 950                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 951                 if (pb != NULL)
 952                         return pb->pb_op_flags;
 953
 954                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 955         }
 956         /* fallthrough */
 957         default:
 958                 return 0;
 959         }
 960 }
 961
 962 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 963 {
 964         switch (msg->lm_magic) {
 965         case LUSTRE_MSG_MAGIC_V2: {
 966                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 967                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 968                 pb->pb_op_flags |= flags;
 969                 return;
 970         }
 971         default:
 972                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 973         }
 974 }
 975 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 976
 977 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 978 {
 979         switch (msg->lm_magic) {
 980         case LUSTRE_MSG_MAGIC_V2: {
 981                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 982                 if (pb == NULL) {
 983                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 984                         return NULL;
 985                 }
 986                 return &pb->pb_handle;
 987         }
 988         default:
 989                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 990                 return NULL;
 991         }
 992 }
 993
 994 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 995 {
 996         switch (msg->lm_magic) {
 997         case LUSTRE_MSG_MAGIC_V2: {
 998                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 999                 if (pb == NULL) {
1000                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1001                         return PTL_RPC_MSG_ERR;
1002                 }
1003                 return pb->pb_type;
1004         }
1005         default:
1006                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1007                 return PTL_RPC_MSG_ERR;
1008         }
1009 }
1010 EXPORT_SYMBOL(lustre_msg_get_type);
1011
1012 enum lustre_msg_version lustre_msg_get_version(struct lustre_msg *msg)
1013 {
1014         switch (msg->lm_magic) {
1015         case LUSTRE_MSG_MAGIC_V2: {
1016                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1017                 if (pb == NULL) {
1018                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1019                         return 0;
1020                 }
1021                 return pb->pb_version;
1022         }
1023         default:
1024                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1025                 return 0;
1026         }
1027 }
1028
1029 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
1030 {
1031         switch (msg->lm_magic) {
1032         case LUSTRE_MSG_MAGIC_V2: {
1033                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1034                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1035                 pb->pb_version |= version;
1036                 return;
1037         }
1038         default:
1039                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1040         }
1041 }
1042
1043 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1044 {
1045         switch (msg->lm_magic) {
1046         case LUSTRE_MSG_MAGIC_V2: {
1047                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1048                 if (pb == NULL) {
1049                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1050                         return 0;
1051                 }
1052                 return pb->pb_opc;
1053         }
1054         default:
1055                 CERROR("incorrect message magic: %08x (msg:%p)\n",
1056                        msg->lm_magic, msg);
1057                 return 0;
1058         }
1059 }
1060 EXPORT_SYMBOL(lustre_msg_get_opc);
1061
1062 __u64 lustre_msg_get_last_xid(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 == NULL) {
1068                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1069                         return 0;
1070                 }
1071                 return pb->pb_last_xid;
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_xid);
1079
1080 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1081 {
1082         switch (msg->lm_magic) {
1083         case LUSTRE_MSG_MAGIC_V2: {
1084                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1085                 if (!pb) {
1086                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1087                         return 0;
1088                 }
1089                 return pb->pb_tag;
1090         }
1091         default:
1092                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1093                 return 0;
1094         }
1095 }
1096 EXPORT_SYMBOL(lustre_msg_get_tag);
1097
1098 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1099 {
1100         switch (msg->lm_magic) {
1101         case LUSTRE_MSG_MAGIC_V2: {
1102                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1103                 if (pb == NULL) {
1104                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1105                         return 0;
1106                 }
1107                 return pb->pb_last_committed;
1108         }
1109         default:
1110                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1111                 return 0;
1112         }
1113 }
1114 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1115
1116 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1117 {
1118         switch (msg->lm_magic) {
1119         case LUSTRE_MSG_MAGIC_V2: {
1120                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1121                 if (pb == NULL) {
1122                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1123                         return NULL;
1124                 }
1125                 return pb->pb_pre_versions;
1126         }
1127         default:
1128                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1129                 return NULL;
1130         }
1131 }
1132 EXPORT_SYMBOL(lustre_msg_get_versions);
1133
1134 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1135 {
1136         switch (msg->lm_magic) {
1137         case LUSTRE_MSG_MAGIC_V2: {
1138                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1139                 if (pb == NULL) {
1140                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1141                         return 0;
1142                 }
1143                 return pb->pb_transno;
1144         }
1145         default:
1146                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1147                 return 0;
1148         }
1149 }
1150 EXPORT_SYMBOL(lustre_msg_get_transno);
1151
1152 int lustre_msg_get_status(struct lustre_msg *msg)
1153 {
1154         switch (msg->lm_magic) {
1155         case LUSTRE_MSG_MAGIC_V2: {
1156                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1157                 if (pb != NULL)
1158                         return pb->pb_status;
1159                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1160         }
1161         /* fallthrough */
1162         default:
1163                 /*
1164                  * status might be printed in debug code while message
1165                  * uninitialized
1166                  */
1167                 return -EINVAL;
1168         }
1169 }
1170 EXPORT_SYMBOL(lustre_msg_get_status);
1171
1172 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1173 {
1174         switch (msg->lm_magic) {
1175         case LUSTRE_MSG_MAGIC_V2: {
1176                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1177                 if (pb == NULL) {
1178                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1179                         return -EINVAL;
1180                 }
1181                 return pb->pb_slv;
1182         }
1183         default:
1184                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1185                 return -EINVAL;
1186         }
1187 }
1188
1189
1190 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1191 {
1192         switch (msg->lm_magic) {
1193         case LUSTRE_MSG_MAGIC_V2: {
1194                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1195                 if (pb == NULL) {
1196                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1197                         return;
1198                 }
1199                 pb->pb_slv = slv;
1200                 return;
1201         }
1202         default:
1203                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1204                 return;
1205         }
1206 }
1207
1208 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1209 {
1210         switch (msg->lm_magic) {
1211         case LUSTRE_MSG_MAGIC_V2: {
1212                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1213                 if (pb == NULL) {
1214                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1215                         return -EINVAL;
1216                 }
1217                 return pb->pb_limit;
1218         }
1219         default:
1220                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1221                 return -EINVAL;
1222         }
1223 }
1224
1225
1226 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1227 {
1228         switch (msg->lm_magic) {
1229         case LUSTRE_MSG_MAGIC_V2: {
1230                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1231                 if (pb == NULL) {
1232                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1233                         return;
1234                 }
1235                 pb->pb_limit = limit;
1236                 return;
1237         }
1238         default:
1239                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1240                 return;
1241         }
1242 }
1243
1244 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1245 {
1246         switch (msg->lm_magic) {
1247         case LUSTRE_MSG_MAGIC_V2: {
1248                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1249                 if (pb == NULL) {
1250                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1251                         return 0;
1252                 }
1253                 return pb->pb_conn_cnt;
1254         }
1255         default:
1256                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1257                 return 0;
1258         }
1259 }
1260 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1261
1262 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1263 {
1264         switch (msg->lm_magic) {
1265         case LUSTRE_MSG_MAGIC_V2:
1266                 return msg->lm_magic;
1267         default:
1268                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1269                 return 0;
1270         }
1271 }
1272
1273 timeout_t lustre_msg_get_timeout(struct lustre_msg *msg)
1274 {
1275         switch (msg->lm_magic) {
1276         case LUSTRE_MSG_MAGIC_V2: {
1277                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1278
1279                 if (pb == NULL) {
1280                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1281                         return 0;
1282                 }
1283                 return pb->pb_timeout;
1284         }
1285         default:
1286                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1287                 return 0;
1288         }
1289 }
1290
1291 timeout_t lustre_msg_get_service_timeout(struct lustre_msg *msg)
1292 {
1293         switch (msg->lm_magic) {
1294         case LUSTRE_MSG_MAGIC_V2: {
1295                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1296
1297                 if (pb == NULL) {
1298                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1299                         return 0;
1300                 }
1301                 return pb->pb_service_time;
1302         }
1303         default:
1304                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1305                 return 0;
1306         }
1307 }
1308
1309 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1310 {
1311         switch (msg->lm_magic) {
1312         case LUSTRE_MSG_MAGIC_V2: {
1313                 struct ptlrpc_body *pb;
1314
1315                 /* the old pltrpc_body_v2 is smaller; doesn't include jobid */
1316                 if (msg->lm_buflens[MSG_PTLRPC_BODY_OFF] <
1317                     sizeof(struct ptlrpc_body))
1318                         return NULL;
1319
1320                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1321                                           sizeof(struct ptlrpc_body));
1322                 if (!pb)
1323                         return NULL;
1324
1325                 return pb->pb_jobid;
1326         }
1327         default:
1328                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1329                 return NULL;
1330         }
1331 }
1332 EXPORT_SYMBOL(lustre_msg_get_jobid);
1333
1334 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1335 {
1336         switch (msg->lm_magic) {
1337         case LUSTRE_MSG_MAGIC_V2:
1338                 return msg->lm_cksum;
1339         default:
1340                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1341                 return 0;
1342         }
1343 }
1344
1345 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1346 {
1347         switch (msg->lm_magic) {
1348         case LUSTRE_MSG_MAGIC_V2: {
1349                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1350                 if (pb == NULL) {
1351                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1352                         return 0;
1353                 }
1354                 return pb->pb_mbits;
1355         }
1356         default:
1357                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1358                 return 0;
1359         }
1360 }
1361
1362 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg, __u32 buf)
1363 {
1364         switch (msg->lm_magic) {
1365         case LUSTRE_MSG_MAGIC_V2: {
1366                 struct ptlrpc_body *pb = lustre_msg_buf_v2(msg, buf, 0);
1367                 __u32 len = lustre_msg_buflen(msg, buf);
1368                 __u32 crc;
1369
1370 #if IS_ENABLED(CONFIG_CRC32)
1371                 /* about 10x faster than crypto_hash for small buffers */
1372                 crc = crc32_le(~(__u32)0, (unsigned char *)pb, len);
1373 #elif IS_ENABLED(CONFIG_CRYPTO_CRC32)
1374                 unsigned int hsize = 4;
1375
1376                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1377                                        len, NULL, 0, (unsigned char *)&crc,
1378                                        &hsize);
1379 #else
1380 #error "need either CONFIG_CRC32 or CONFIG_CRYPTO_CRC32 enabled in the kernel"
1381 #endif
1382                 return crc;
1383         }
1384         default:
1385                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1386                 return 0;
1387         }
1388 }
1389
1390 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1391 {
1392         switch (msg->lm_magic) {
1393         case LUSTRE_MSG_MAGIC_V2: {
1394                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1395                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1396                 pb->pb_handle = *handle;
1397                 return;
1398         }
1399         default:
1400                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1401         }
1402 }
1403
1404 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
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_type = type;
1411                 return;
1412                 }
1413         default:
1414                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1415         }
1416 }
1417
1418 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1419 {
1420         switch (msg->lm_magic) {
1421         case LUSTRE_MSG_MAGIC_V2: {
1422                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1423                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1424                 pb->pb_opc = opc;
1425                 return;
1426         }
1427         default:
1428                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1429         }
1430 }
1431
1432 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1433 {
1434         switch (msg->lm_magic) {
1435         case LUSTRE_MSG_MAGIC_V2: {
1436                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1437                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1438                 pb->pb_last_xid = last_xid;
1439                 return;
1440         }
1441         default:
1442                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1443         }
1444 }
1445 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1446
1447 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1448 {
1449         switch (msg->lm_magic) {
1450         case LUSTRE_MSG_MAGIC_V2: {
1451                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1452                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1453                 pb->pb_tag = tag;
1454                 return;
1455         }
1456         default:
1457                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1458         }
1459 }
1460 EXPORT_SYMBOL(lustre_msg_set_tag);
1461
1462 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1463 {
1464         switch (msg->lm_magic) {
1465         case LUSTRE_MSG_MAGIC_V2: {
1466                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1467                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1468                 pb->pb_last_committed = last_committed;
1469                 return;
1470         }
1471         default:
1472                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1473         }
1474 }
1475
1476 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1477 {
1478         switch (msg->lm_magic) {
1479         case LUSTRE_MSG_MAGIC_V2: {
1480                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1481                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1482                 pb->pb_pre_versions[0] = versions[0];
1483                 pb->pb_pre_versions[1] = versions[1];
1484                 pb->pb_pre_versions[2] = versions[2];
1485                 pb->pb_pre_versions[3] = versions[3];
1486                 return;
1487         }
1488         default:
1489                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1490         }
1491 }
1492 EXPORT_SYMBOL(lustre_msg_set_versions);
1493
1494 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1495 {
1496         switch (msg->lm_magic) {
1497         case LUSTRE_MSG_MAGIC_V2: {
1498                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1499                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1500                 pb->pb_transno = transno;
1501                 return;
1502         }
1503         default:
1504                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1505         }
1506 }
1507 EXPORT_SYMBOL(lustre_msg_set_transno);
1508
1509 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1510 {
1511         switch (msg->lm_magic) {
1512         case LUSTRE_MSG_MAGIC_V2: {
1513                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1514                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1515                 pb->pb_status = status;
1516                 return;
1517         }
1518         default:
1519                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1520         }
1521 }
1522 EXPORT_SYMBOL(lustre_msg_set_status);
1523
1524 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1525 {
1526         switch (msg->lm_magic) {
1527         case LUSTRE_MSG_MAGIC_V2: {
1528                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1529                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1530                 pb->pb_conn_cnt = conn_cnt;
1531                 return;
1532         }
1533         default:
1534                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1535         }
1536 }
1537
1538 void lustre_msg_set_timeout(struct lustre_msg *msg, timeout_t timeout)
1539 {
1540         switch (msg->lm_magic) {
1541         case LUSTRE_MSG_MAGIC_V2: {
1542                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1543
1544                 LASSERT(timeout >= 0);
1545                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1546                 pb->pb_timeout = timeout;
1547                 return;
1548         }
1549         default:
1550                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1551         }
1552 }
1553
1554 void lustre_msg_set_service_timeout(struct lustre_msg *msg,
1555                                     timeout_t service_timeout)
1556 {
1557         switch (msg->lm_magic) {
1558         case LUSTRE_MSG_MAGIC_V2: {
1559                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1560
1561                 LASSERT(service_timeout >= 0);
1562                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1563                 pb->pb_service_time = service_timeout;
1564                 return;
1565         }
1566         default:
1567                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1568         }
1569 }
1570
1571 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1572 {
1573         switch (msg->lm_magic) {
1574         case LUSTRE_MSG_MAGIC_V2: {
1575                 __u32 opc = lustre_msg_get_opc(msg);
1576                 struct ptlrpc_body *pb;
1577
1578                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1579                  * See the comment in ptlrpc_request_pack(). */
1580                 if (!opc || opc == LDLM_BL_CALLBACK ||
1581                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1582                         return;
1583
1584                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1585                                        sizeof(struct ptlrpc_body));
1586                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1587
1588                 if (jobid != NULL)
1589                         memcpy(pb->pb_jobid, jobid, sizeof(pb->pb_jobid));
1590                 else if (pb->pb_jobid[0] == '\0')
1591                         lustre_get_jobid(pb->pb_jobid, sizeof(pb->pb_jobid));
1592                 return;
1593         }
1594         default:
1595                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1596         }
1597 }
1598 EXPORT_SYMBOL(lustre_msg_set_jobid);
1599
1600 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1601 {
1602         switch (msg->lm_magic) {
1603         case LUSTRE_MSG_MAGIC_V2:
1604                 msg->lm_cksum = cksum;
1605                 return;
1606         default:
1607                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1608         }
1609 }
1610
1611 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1612 {
1613         switch (msg->lm_magic) {
1614         case LUSTRE_MSG_MAGIC_V2: {
1615                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1616
1617                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1618                 pb->pb_mbits = mbits;
1619                 return;
1620         }
1621         default:
1622                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1623         }
1624 }
1625
1626 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1627 {
1628         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1629
1630         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1631                                          req->rq_pill.rc_area[RCL_SERVER]);
1632         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1633                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1634 }
1635 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1636
1637 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1638 {
1639         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1640         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1641                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1642 }
1643
1644 /**
1645  * Send a remote set_info_async.
1646  *
1647  * This may go from client to server or server to client.
1648  */
1649 int do_set_info_async(struct obd_import *imp,
1650                       int opcode, int version,
1651                       size_t keylen, void *key,
1652                       size_t vallen, void *val,
1653                       struct ptlrpc_request_set *set)
1654 {
1655         struct ptlrpc_request *req;
1656         char *tmp;
1657         int rc;
1658
1659         ENTRY;
1660
1661         req = ptlrpc_request_alloc(imp, KEY_IS(KEY_CHANGELOG_CLEAR) ?
1662                                                 &RQF_MDT_SET_INFO :
1663                                                 &RQF_OBD_SET_INFO);
1664         if (req == NULL)
1665                 RETURN(-ENOMEM);
1666
1667         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1668                              RCL_CLIENT, keylen);
1669         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1670                              RCL_CLIENT, vallen);
1671         rc = ptlrpc_request_pack(req, version, opcode);
1672         if (rc) {
1673                 ptlrpc_request_free(req);
1674                 RETURN(rc);
1675         }
1676
1677         if (KEY_IS(KEY_CHANGELOG_CLEAR))
1678                 do_pack_body(req);
1679
1680         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1681         memcpy(tmp, key, keylen);
1682         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1683         memcpy(tmp, val, vallen);
1684
1685         ptlrpc_request_set_replen(req);
1686
1687         if (set) {
1688                 ptlrpc_set_add_req(set, req);
1689                 ptlrpc_check_set(NULL, set);
1690         } else {
1691                 rc = ptlrpc_queue_wait(req);
1692                 ptlrpc_req_finished(req);
1693         }
1694
1695         RETURN(rc);
1696 }
1697 EXPORT_SYMBOL(do_set_info_async);
1698
1699 /* byte flipping routines for all wire types declared in
1700  * lustre_idl.h implemented here.
1701  */
1702 void lustre_swab_ptlrpc_body(struct ptlrpc_body *body)
1703 {
1704         __swab32s(&body->pb_type);
1705         __swab32s(&body->pb_version);
1706         __swab32s(&body->pb_opc);
1707         __swab32s(&body->pb_status);
1708         __swab64s(&body->pb_last_xid);
1709         __swab16s(&body->pb_tag);
1710         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding0) == 0);
1711         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding1) == 0);
1712         __swab64s(&body->pb_last_committed);
1713         __swab64s(&body->pb_transno);
1714         __swab32s(&body->pb_flags);
1715         __swab32s(&body->pb_op_flags);
1716         __swab32s(&body->pb_conn_cnt);
1717         __swab32s(&body->pb_timeout);
1718         __swab32s(&body->pb_service_time);
1719         __swab32s(&body->pb_limit);
1720         __swab64s(&body->pb_slv);
1721         __swab64s(&body->pb_pre_versions[0]);
1722         __swab64s(&body->pb_pre_versions[1]);
1723         __swab64s(&body->pb_pre_versions[2]);
1724         __swab64s(&body->pb_pre_versions[3]);
1725         __swab64s(&body->pb_mbits);
1726         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_0) == 0);
1727         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_1) == 0);
1728         BUILD_BUG_ON(offsetof(typeof(*body), pb_padding64_2) == 0);
1729         /*
1730          * While we need to maintain compatibility between
1731          * clients and servers without ptlrpc_body_v2 (< 2.3)
1732          * do not swab any fields beyond pb_jobid, as we are
1733          * using this swab function for both ptlrpc_body
1734          * and ptlrpc_body_v2.
1735          */
1736         /* pb_jobid is an ASCII string and should not be swabbed */
1737         BUILD_BUG_ON(offsetof(typeof(*body), pb_jobid) == 0);
1738 }
1739
1740 void lustre_swab_connect(struct obd_connect_data *ocd)
1741 {
1742         __swab64s(&ocd->ocd_connect_flags);
1743         __swab32s(&ocd->ocd_version);
1744         __swab32s(&ocd->ocd_grant);
1745         __swab64s(&ocd->ocd_ibits_known);
1746         __swab32s(&ocd->ocd_index);
1747         __swab32s(&ocd->ocd_brw_size);
1748         /*
1749          * ocd_blocksize and ocd_inodespace don't need to be swabbed because
1750          * they are 8-byte values
1751          */
1752         __swab16s(&ocd->ocd_grant_tax_kb);
1753         __swab32s(&ocd->ocd_grant_max_blks);
1754         __swab64s(&ocd->ocd_transno);
1755         __swab32s(&ocd->ocd_group);
1756         __swab32s(&ocd->ocd_cksum_types);
1757         __swab32s(&ocd->ocd_instance);
1758         /*
1759          * Fields after ocd_cksum_types are only accessible by the receiver
1760          * if the corresponding flag in ocd_connect_flags is set. Accessing
1761          * any field after ocd_maxbytes on the receiver without a valid flag
1762          * may result in out-of-bound memory access and kernel oops.
1763          */
1764         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1765                 __swab32s(&ocd->ocd_max_easize);
1766         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1767                 __swab64s(&ocd->ocd_maxbytes);
1768         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1769                 __swab16s(&ocd->ocd_maxmodrpcs);
1770         BUILD_BUG_ON(offsetof(typeof(*ocd), padding0) == 0);
1771         BUILD_BUG_ON(offsetof(typeof(*ocd), padding1) == 0);
1772         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1773                 __swab64s(&ocd->ocd_connect_flags2);
1774         BUILD_BUG_ON(offsetof(typeof(*ocd), padding3) == 0);
1775         BUILD_BUG_ON(offsetof(typeof(*ocd), padding4) == 0);
1776         BUILD_BUG_ON(offsetof(typeof(*ocd), padding5) == 0);
1777         BUILD_BUG_ON(offsetof(typeof(*ocd), padding6) == 0);
1778         BUILD_BUG_ON(offsetof(typeof(*ocd), padding7) == 0);
1779         BUILD_BUG_ON(offsetof(typeof(*ocd), padding8) == 0);
1780         BUILD_BUG_ON(offsetof(typeof(*ocd), padding9) == 0);
1781         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingA) == 0);
1782         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingB) == 0);
1783         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingC) == 0);
1784         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingD) == 0);
1785         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingE) == 0);
1786         BUILD_BUG_ON(offsetof(typeof(*ocd), paddingF) == 0);
1787 }
1788
1789 static void lustre_swab_ost_layout(struct ost_layout *ol)
1790 {
1791         __swab32s(&ol->ol_stripe_size);
1792         __swab32s(&ol->ol_stripe_count);
1793         __swab64s(&ol->ol_comp_start);
1794         __swab64s(&ol->ol_comp_end);
1795         __swab32s(&ol->ol_comp_id);
1796 }
1797
1798 void lustre_swab_obdo(struct obdo *o)
1799 {
1800         __swab64s(&o->o_valid);
1801         lustre_swab_ost_id(&o->o_oi);
1802         __swab64s(&o->o_parent_seq);
1803         __swab64s(&o->o_size);
1804         __swab64s(&o->o_mtime);
1805         __swab64s(&o->o_atime);
1806         __swab64s(&o->o_ctime);
1807         __swab64s(&o->o_blocks);
1808         __swab64s(&o->o_grant);
1809         __swab32s(&o->o_blksize);
1810         __swab32s(&o->o_mode);
1811         __swab32s(&o->o_uid);
1812         __swab32s(&o->o_gid);
1813         __swab32s(&o->o_flags);
1814         __swab32s(&o->o_nlink);
1815         __swab32s(&o->o_parent_oid);
1816         __swab32s(&o->o_misc);
1817         __swab64s(&o->o_ioepoch);
1818         __swab32s(&o->o_stripe_idx);
1819         __swab32s(&o->o_parent_ver);
1820         lustre_swab_ost_layout(&o->o_layout);
1821         __swab32s(&o->o_layout_version);
1822         __swab32s(&o->o_uid_h);
1823         __swab32s(&o->o_gid_h);
1824         __swab64s(&o->o_data_version);
1825         __swab32s(&o->o_projid);
1826         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_4) == 0);
1827         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_5) == 0);
1828         BUILD_BUG_ON(offsetof(typeof(*o), o_padding_6) == 0);
1829
1830 }
1831 EXPORT_SYMBOL(lustre_swab_obdo);
1832
1833 void lustre_swab_obd_statfs(struct obd_statfs *os)
1834 {
1835         __swab64s(&os->os_type);
1836         __swab64s(&os->os_blocks);
1837         __swab64s(&os->os_bfree);
1838         __swab64s(&os->os_bavail);
1839         __swab64s(&os->os_files);
1840         __swab64s(&os->os_ffree);
1841         /* no need to swab os_fsid */
1842         __swab32s(&os->os_bsize);
1843         __swab32s(&os->os_namelen);
1844         __swab64s(&os->os_maxbytes);
1845         __swab32s(&os->os_state);
1846         __swab32s(&os->os_fprecreated);
1847         __swab32s(&os->os_granted);
1848         BUILD_BUG_ON(offsetof(typeof(*os), os_spare3) == 0);
1849         BUILD_BUG_ON(offsetof(typeof(*os), os_spare4) == 0);
1850         BUILD_BUG_ON(offsetof(typeof(*os), os_spare5) == 0);
1851         BUILD_BUG_ON(offsetof(typeof(*os), os_spare6) == 0);
1852         BUILD_BUG_ON(offsetof(typeof(*os), os_spare7) == 0);
1853         BUILD_BUG_ON(offsetof(typeof(*os), os_spare8) == 0);
1854         BUILD_BUG_ON(offsetof(typeof(*os), os_spare9) == 0);
1855 }
1856
1857 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1858 {
1859         lustre_swab_ost_id(&ioo->ioo_oid);
1860         __swab32s(&ioo->ioo_max_brw);
1861         __swab32s(&ioo->ioo_bufcnt);
1862 }
1863
1864 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1865 {
1866         __swab64s(&nbr->rnb_offset);
1867         __swab32s(&nbr->rnb_len);
1868         __swab32s(&nbr->rnb_flags);
1869 }
1870
1871 void lustre_swab_ost_body(struct ost_body *b)
1872 {
1873         lustre_swab_obdo(&b->oa);
1874 }
1875
1876 void lustre_swab_ost_last_id(u64 *id)
1877 {
1878         __swab64s(id);
1879 }
1880
1881 void lustre_swab_generic_32s(__u32 *val)
1882 {
1883         __swab32s(val);
1884 }
1885
1886 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1887 {
1888         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1889         __swab64s(&desc->gl_flags);
1890         __swab64s(&desc->gl_ver);
1891         __swab64s(&desc->gl_hardlimit);
1892         __swab64s(&desc->gl_softlimit);
1893         __swab64s(&desc->gl_time);
1894         BUILD_BUG_ON(offsetof(typeof(*desc), gl_pad2) == 0);
1895 }
1896 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1897
1898 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1899 {
1900         __swab32s(&desc->lgbd_status);
1901         __swab32s(&desc->lgbd_timeout);
1902         BUILD_BUG_ON(offsetof(typeof(*desc), lgbd_padding) == 0);
1903 }
1904 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1905
1906 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1907 {
1908         __swab64s(&lvb->lvb_size);
1909         __swab64s(&lvb->lvb_mtime);
1910         __swab64s(&lvb->lvb_atime);
1911         __swab64s(&lvb->lvb_ctime);
1912         __swab64s(&lvb->lvb_blocks);
1913 }
1914 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1915
1916 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1917 {
1918         __swab64s(&lvb->lvb_size);
1919         __swab64s(&lvb->lvb_mtime);
1920         __swab64s(&lvb->lvb_atime);
1921         __swab64s(&lvb->lvb_ctime);
1922         __swab64s(&lvb->lvb_blocks);
1923         __swab32s(&lvb->lvb_mtime_ns);
1924         __swab32s(&lvb->lvb_atime_ns);
1925         __swab32s(&lvb->lvb_ctime_ns);
1926         __swab32s(&lvb->lvb_padding);
1927 }
1928 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1929
1930 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1931 {
1932         __swab64s(&lvb->lvb_flags);
1933         __swab64s(&lvb->lvb_id_may_rel);
1934         __swab64s(&lvb->lvb_id_rel);
1935         __swab64s(&lvb->lvb_id_qunit);
1936         __swab64s(&lvb->lvb_pad1);
1937 }
1938 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1939
1940 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1941 {
1942         __swab32s(&lvb->lvb_status);
1943         __swab32s(&lvb->lvb_index);
1944         BUILD_BUG_ON(offsetof(typeof(*lvb), lvb_padding) == 0);
1945 }
1946 EXPORT_SYMBOL(lustre_swab_barrier_lvb);
1947
1948 void lustre_swab_mdt_body(struct mdt_body *b)
1949 {
1950         lustre_swab_lu_fid(&b->mbo_fid1);
1951         lustre_swab_lu_fid(&b->mbo_fid2);
1952         /* handle is opaque */
1953         __swab64s(&b->mbo_valid);
1954         __swab64s(&b->mbo_size);
1955         __swab64s(&b->mbo_mtime);
1956         __swab64s(&b->mbo_atime);
1957         __swab64s(&b->mbo_ctime);
1958         __swab64s(&b->mbo_blocks);
1959         __swab64s(&b->mbo_version);
1960         __swab64s(&b->mbo_t_state);
1961         __swab32s(&b->mbo_fsuid);
1962         __swab32s(&b->mbo_fsgid);
1963         __swab32s(&b->mbo_capability);
1964         __swab32s(&b->mbo_mode);
1965         __swab32s(&b->mbo_uid);
1966         __swab32s(&b->mbo_gid);
1967         __swab32s(&b->mbo_flags);
1968         __swab32s(&b->mbo_rdev);
1969         __swab32s(&b->mbo_nlink);
1970         __swab32s(&b->mbo_layout_gen);
1971         __swab32s(&b->mbo_suppgid);
1972         __swab32s(&b->mbo_eadatasize);
1973         __swab32s(&b->mbo_aclsize);
1974         __swab32s(&b->mbo_max_mdsize);
1975         BUILD_BUG_ON(offsetof(typeof(*b), mbo_unused3) == 0);
1976         __swab32s(&b->mbo_uid_h);
1977         __swab32s(&b->mbo_gid_h);
1978         __swab32s(&b->mbo_projid);
1979         __swab64s(&b->mbo_dom_size);
1980         __swab64s(&b->mbo_dom_blocks);
1981         __swab64s(&b->mbo_btime);
1982         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_9) == 0);
1983         BUILD_BUG_ON(offsetof(typeof(*b), mbo_padding_10) == 0);
1984 }
1985
1986 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1987 {
1988         /* mio_open_handle is opaque */
1989         BUILD_BUG_ON(offsetof(typeof(*b), mio_unused1) == 0);
1990         BUILD_BUG_ON(offsetof(typeof(*b), mio_unused2) == 0);
1991         BUILD_BUG_ON(offsetof(typeof(*b), mio_padding) == 0);
1992 }
1993
1994 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1995 {
1996         int i;
1997
1998         __swab32s(&mti->mti_lustre_ver);
1999         __swab32s(&mti->mti_stripe_index);
2000         __swab32s(&mti->mti_config_ver);
2001         __swab32s(&mti->mti_flags);
2002         __swab32s(&mti->mti_instance);
2003         __swab32s(&mti->mti_nid_count);
2004         BUILD_BUG_ON(sizeof(lnet_nid_t) != sizeof(__u64));
2005         for (i = 0; i < MTI_NIDS_MAX; i++)
2006                 __swab64s(&mti->mti_nids[i]);
2007 }
2008
2009 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
2010 {
2011         __u8 i;
2012
2013         __swab64s(&entry->mne_version);
2014         __swab32s(&entry->mne_instance);
2015         __swab32s(&entry->mne_index);
2016         __swab32s(&entry->mne_length);
2017
2018         /* mne_nid_(count|type) must be one byte size because we're gonna
2019          * access it w/o swapping. */
2020         BUILD_BUG_ON(sizeof(entry->mne_nid_count) != sizeof(__u8));
2021         BUILD_BUG_ON(sizeof(entry->mne_nid_type) != sizeof(__u8));
2022
2023         /* remove this assertion if ipv6 is supported. */
2024         LASSERT(entry->mne_nid_type == 0);
2025         for (i = 0; i < entry->mne_nid_count; i++) {
2026                 BUILD_BUG_ON(sizeof(lnet_nid_t) != sizeof(__u64));
2027                 __swab64s(&entry->u.nids[i]);
2028         }
2029 }
2030 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
2031
2032 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
2033 {
2034         __swab64s(&body->mcb_offset);
2035         __swab32s(&body->mcb_units);
2036         __swab16s(&body->mcb_type);
2037 }
2038
2039 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
2040 {
2041         __swab64s(&body->mcr_offset);
2042         __swab64s(&body->mcr_size);
2043 }
2044
2045 static void lustre_swab_obd_dqinfo(struct obd_dqinfo *i)
2046 {
2047         __swab64s(&i->dqi_bgrace);
2048         __swab64s(&i->dqi_igrace);
2049         __swab32s(&i->dqi_flags);
2050         __swab32s(&i->dqi_valid);
2051 }
2052
2053 static void lustre_swab_obd_dqblk(struct obd_dqblk *b)
2054 {
2055         __swab64s(&b->dqb_ihardlimit);
2056         __swab64s(&b->dqb_isoftlimit);
2057         __swab64s(&b->dqb_curinodes);
2058         __swab64s(&b->dqb_bhardlimit);
2059         __swab64s(&b->dqb_bsoftlimit);
2060         __swab64s(&b->dqb_curspace);
2061         __swab64s(&b->dqb_btime);
2062         __swab64s(&b->dqb_itime);
2063         __swab32s(&b->dqb_valid);
2064         BUILD_BUG_ON(offsetof(typeof(*b), dqb_padding) == 0);
2065 }
2066
2067 int lustre_swab_obd_quotactl(struct obd_quotactl *q, __u32 len)
2068 {
2069         if (unlikely(len <= sizeof(struct obd_quotactl)))
2070                 return -EOVERFLOW;
2071
2072         __swab32s(&q->qc_cmd);
2073         __swab32s(&q->qc_type);
2074         __swab32s(&q->qc_id);
2075         __swab32s(&q->qc_stat);
2076         lustre_swab_obd_dqinfo(&q->qc_dqinfo);
2077         lustre_swab_obd_dqblk(&q->qc_dqblk);
2078
2079         return len;
2080 }
2081
2082 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2083 {
2084         lustre_swab_lu_fid(&gf->gf_fid);
2085         __swab64s(&gf->gf_recno);
2086         __swab32s(&gf->gf_linkno);
2087         __swab32s(&gf->gf_pathlen);
2088 }
2089 EXPORT_SYMBOL(lustre_swab_fid2path);
2090
2091 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
2092 {
2093         __swab64s(&fm_extent->fe_logical);
2094         __swab64s(&fm_extent->fe_physical);
2095         __swab64s(&fm_extent->fe_length);
2096         __swab32s(&fm_extent->fe_flags);
2097         __swab32s(&fm_extent->fe_device);
2098 }
2099
2100 static void lustre_swab_fiemap_hdr(struct fiemap *fiemap)
2101 {
2102         __swab64s(&fiemap->fm_start);
2103         __swab64s(&fiemap->fm_length);
2104         __swab32s(&fiemap->fm_flags);
2105         __swab32s(&fiemap->fm_mapped_extents);
2106         __swab32s(&fiemap->fm_extent_count);
2107         __swab32s(&fiemap->fm_reserved);
2108 }
2109
2110 int lustre_swab_fiemap(struct fiemap *fiemap, __u32 len)
2111 {
2112         __u32 i, size, count;
2113
2114         lustre_swab_fiemap_hdr(fiemap);
2115
2116         size = fiemap_count_to_size(fiemap->fm_mapped_extents);
2117         count = fiemap->fm_mapped_extents;
2118         if (unlikely(size > len)) {
2119                 count = (len - sizeof(struct fiemap)) /
2120                         sizeof(struct fiemap_extent);
2121                 fiemap->fm_mapped_extents = count;
2122                 size = -EOVERFLOW;
2123         }
2124         /* still swab extents as we cannot yet pass rc to callers */
2125         for (i = 0; i < count; i++)
2126                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2127
2128         return size;
2129 }
2130
2131 void lustre_swab_fiemap_info_key(struct ll_fiemap_info_key *fiemap_info)
2132 {
2133         lustre_swab_obdo(&fiemap_info->lfik_oa);
2134         lustre_swab_fiemap_hdr(&fiemap_info->lfik_fiemap);
2135 }
2136
2137 void lustre_swab_idx_info(struct idx_info *ii)
2138 {
2139         __swab32s(&ii->ii_magic);
2140         __swab32s(&ii->ii_flags);
2141         __swab16s(&ii->ii_count);
2142         __swab32s(&ii->ii_attrs);
2143         lustre_swab_lu_fid(&ii->ii_fid);
2144         __swab64s(&ii->ii_version);
2145         __swab64s(&ii->ii_hash_start);
2146         __swab64s(&ii->ii_hash_end);
2147         __swab16s(&ii->ii_keysize);
2148         __swab16s(&ii->ii_recsize);
2149 }
2150
2151 void lustre_swab_lip_header(struct lu_idxpage *lip)
2152 {
2153         /* swab header */
2154         __swab32s(&lip->lip_magic);
2155         __swab16s(&lip->lip_flags);
2156         __swab16s(&lip->lip_nr);
2157 }
2158 EXPORT_SYMBOL(lustre_swab_lip_header);
2159
2160 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2161 {
2162         __swab32s(&rr->rr_opcode);
2163         __swab32s(&rr->rr_cap);
2164         __swab32s(&rr->rr_fsuid);
2165         /* rr_fsuid_h is unused */
2166         __swab32s(&rr->rr_fsgid);
2167         /* rr_fsgid_h is unused */
2168         __swab32s(&rr->rr_suppgid1);
2169         /* rr_suppgid1_h is unused */
2170         __swab32s(&rr->rr_suppgid2);
2171         /* rr_suppgid2_h is unused */
2172         lustre_swab_lu_fid(&rr->rr_fid1);
2173         lustre_swab_lu_fid(&rr->rr_fid2);
2174         __swab64s(&rr->rr_mtime);
2175         __swab64s(&rr->rr_atime);
2176         __swab64s(&rr->rr_ctime);
2177         __swab64s(&rr->rr_size);
2178         __swab64s(&rr->rr_blocks);
2179         __swab32s(&rr->rr_bias);
2180         __swab32s(&rr->rr_mode);
2181         __swab32s(&rr->rr_flags);
2182         __swab32s(&rr->rr_flags_h);
2183         __swab32s(&rr->rr_umask);
2184         __swab16s(&rr->rr_mirror_id);
2185
2186         BUILD_BUG_ON(offsetof(typeof(*rr), rr_padding_4) == 0);
2187 };
2188
2189 void lustre_swab_lov_desc(struct lov_desc *ld)
2190 {
2191         __swab32s(&ld->ld_tgt_count);
2192         __swab32s(&ld->ld_active_tgt_count);
2193         __swab32s(&ld->ld_default_stripe_count);
2194         __swab32s(&ld->ld_pattern);
2195         __swab64s(&ld->ld_default_stripe_size);
2196         __swab64s(&ld->ld_default_stripe_offset);
2197         __swab32s(&ld->ld_qos_maxage);
2198         /* uuid endian insensitive */
2199 }
2200 EXPORT_SYMBOL(lustre_swab_lov_desc);
2201
2202 void lustre_swab_lmv_desc(struct lmv_desc *ld)
2203 {
2204         __swab32s(&ld->ld_tgt_count);
2205         __swab32s(&ld->ld_active_tgt_count);
2206         __swab32s(&ld->ld_default_stripe_count);
2207         __swab32s(&ld->ld_pattern);
2208         __swab64s(&ld->ld_default_hash_size);
2209         __swab32s(&ld->ld_qos_maxage);
2210         /* uuid endian insensitive */
2211 }
2212
2213 /* This structure is always in little-endian */
2214 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2215 {
2216         int i;
2217
2218         __swab32s(&lmm1->lmv_magic);
2219         __swab32s(&lmm1->lmv_stripe_count);
2220         __swab32s(&lmm1->lmv_master_mdt_index);
2221         __swab32s(&lmm1->lmv_hash_type);
2222         __swab32s(&lmm1->lmv_layout_version);
2223         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2224                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2225 }
2226
2227 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2228 {
2229         switch (lmm->lmv_magic) {
2230         case LMV_MAGIC_V1:
2231                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2232                 break;
2233         default:
2234                 break;
2235         }
2236 }
2237 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2238
2239 void lustre_swab_lmv_user_md_objects(struct lmv_user_mds_data *lmd,
2240                                      int stripe_count)
2241 {
2242         int i;
2243
2244         for (i = 0; i < stripe_count; i++)
2245                 __swab32s(&(lmd[i].lum_mds));
2246 }
2247 EXPORT_SYMBOL(lustre_swab_lmv_user_md_objects);
2248
2249
2250 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2251 {
2252         __u32 count;
2253
2254         if (lum->lum_magic == LMV_MAGIC_FOREIGN) {
2255                 __swab32s(&lum->lum_magic);
2256                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_length);
2257                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_type);
2258                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_flags);
2259                 return;
2260         }
2261
2262         count = lum->lum_stripe_count;
2263         __swab32s(&lum->lum_magic);
2264         __swab32s(&lum->lum_stripe_count);
2265         __swab32s(&lum->lum_stripe_offset);
2266         __swab32s(&lum->lum_hash_type);
2267         __swab32s(&lum->lum_type);
2268         /* lum_max_inherit and lum_max_inherit_rr do not need to be swabbed */
2269         BUILD_BUG_ON(offsetof(typeof(*lum), lum_padding1) == 0);
2270         BUILD_BUG_ON(offsetof(typeof(*lum), lum_padding2) == 0);
2271         BUILD_BUG_ON(offsetof(typeof(*lum), lum_padding3) == 0);
2272         switch (lum->lum_magic) {
2273         case LMV_USER_MAGIC_SPECIFIC:
2274                 count = lum->lum_stripe_count;
2275                 /* fallthrough */
2276         case __swab32(LMV_USER_MAGIC_SPECIFIC):
2277                 lustre_swab_lmv_user_md_objects(lum->lum_objects, count);
2278                 break;
2279         default:
2280                 break;
2281         }
2282 }
2283 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2284
2285 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2286                               const char *msg)
2287 {
2288         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2289         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2290         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2291         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2292         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2293         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2294         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2295         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2296                lum->lmm_stripe_offset);
2297         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2298                 struct lov_user_md_v3 *v3 = (void *)lum;
2299                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2300         }
2301         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2302                 struct lov_user_md_v3 *v3 = (void *)lum;
2303                 int i;
2304
2305                 if (v3->lmm_pool_name[0] != '\0')
2306                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2307
2308                 CDEBUG(lvl, "\ttarget list:\n");
2309                 for (i = 0; i < v3->lmm_stripe_count; i++)
2310                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2311         }
2312 }
2313
2314 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2315                           const char *msg)
2316 {
2317         struct lov_comp_md_v1   *comp_v1;
2318         int                      i;
2319
2320         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2321                 return;
2322
2323         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2324             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2325                 lustre_print_v1v3(lvl, lum, msg);
2326                 return;
2327         }
2328
2329         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2330                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2331                 return;
2332         }
2333
2334         comp_v1 = (struct lov_comp_md_v1 *)lum;
2335         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2336         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2337         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2338         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2339         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2340         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2341         CDEBUG(lvl, "\tlcm_mirror_count: %#x\n\n", comp_v1->lcm_mirror_count);
2342
2343         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2344                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2345                 struct lov_user_md *v1;
2346
2347                 CDEBUG(lvl, "\tentry %d:\n", i);
2348                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2349                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2350                 if (ent->lcme_flags & LCME_FL_NOSYNC)
2351                         CDEBUG(lvl, "\tlcme_timestamp: %llu\n",
2352                                         ent->lcme_timestamp);
2353                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2354                        ent->lcme_extent.e_start);
2355                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2356                        ent->lcme_extent.e_end);
2357                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2358                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2359
2360                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2361                                 comp_v1->lcm_entries[i].lcme_offset);
2362                 lustre_print_v1v3(lvl, v1, msg);
2363         }
2364 }
2365 EXPORT_SYMBOL(lustre_print_user_md);
2366
2367 static void lustre_swab_lmm_oi(struct ost_id *oi)
2368 {
2369         __swab64s(&oi->oi.oi_id);
2370         __swab64s(&oi->oi.oi_seq);
2371 }
2372
2373 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2374 {
2375         ENTRY;
2376         __swab32s(&lum->lmm_magic);
2377         __swab32s(&lum->lmm_pattern);
2378         lustre_swab_lmm_oi(&lum->lmm_oi);
2379         __swab32s(&lum->lmm_stripe_size);
2380         __swab16s(&lum->lmm_stripe_count);
2381         __swab16s(&lum->lmm_stripe_offset);
2382         EXIT;
2383 }
2384
2385 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2386 {
2387         ENTRY;
2388         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2389         lustre_swab_lov_user_md_common(lum);
2390         EXIT;
2391 }
2392 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2393
2394 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2395 {
2396         ENTRY;
2397         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2398         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2399         /* lmm_pool_name nothing to do with char */
2400         EXIT;
2401 }
2402 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2403
2404 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2405 {
2406         struct lov_comp_md_entry_v1     *ent;
2407         struct lov_user_md_v1   *v1;
2408         struct lov_user_md_v3   *v3;
2409         int     i;
2410         bool    cpu_endian;
2411         __u32   off, size;
2412         __u16   ent_count, stripe_count;
2413         ENTRY;
2414
2415         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2416         ent_count = lum->lcm_entry_count;
2417         if (!cpu_endian)
2418                 __swab16s(&ent_count);
2419
2420         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2421         __swab32s(&lum->lcm_magic);
2422         __swab32s(&lum->lcm_size);
2423         __swab32s(&lum->lcm_layout_gen);
2424         __swab16s(&lum->lcm_flags);
2425         __swab16s(&lum->lcm_entry_count);
2426         __swab16s(&lum->lcm_mirror_count);
2427         BUILD_BUG_ON(offsetof(typeof(*lum), lcm_padding1) == 0);
2428         BUILD_BUG_ON(offsetof(typeof(*lum), lcm_padding2) == 0);
2429
2430         for (i = 0; i < ent_count; i++) {
2431                 ent = &lum->lcm_entries[i];
2432                 off = ent->lcme_offset;
2433                 size = ent->lcme_size;
2434
2435                 if (!cpu_endian) {
2436                         __swab32s(&off);
2437                         __swab32s(&size);
2438                 }
2439                 __swab32s(&ent->lcme_id);
2440                 __swab32s(&ent->lcme_flags);
2441                 __swab64s(&ent->lcme_timestamp);
2442                 __swab64s(&ent->lcme_extent.e_start);
2443                 __swab64s(&ent->lcme_extent.e_end);
2444                 __swab32s(&ent->lcme_offset);
2445                 __swab32s(&ent->lcme_size);
2446                 __swab32s(&ent->lcme_layout_gen);
2447                 BUILD_BUG_ON(offsetof(typeof(*ent), lcme_padding_1) == 0);
2448
2449                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2450                 stripe_count = v1->lmm_stripe_count;
2451                 if (!cpu_endian)
2452                         __swab16s(&stripe_count);
2453
2454                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2455                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2456                         lustre_swab_lov_user_md_v1(v1);
2457                         if (size > sizeof(*v1))
2458                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2459                                                                 stripe_count);
2460                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2461                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2462                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2463                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2464                         v3 = (struct lov_user_md_v3 *)v1;
2465                         lustre_swab_lov_user_md_v3(v3);
2466                         if (size > sizeof(*v3))
2467                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2468                                                                 stripe_count);
2469                 } else {
2470                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2471                 }
2472         }
2473 }
2474 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2475
2476 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2477                                      int stripe_count)
2478 {
2479         int i;
2480
2481         ENTRY;
2482         for (i = 0; i < stripe_count; i++) {
2483                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2484                 __swab32s(&(lod[i].l_ost_gen));
2485                 __swab32s(&(lod[i].l_ost_idx));
2486         }
2487         EXIT;
2488 }
2489 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2490
2491 void lustre_swab_lov_user_md(struct lov_user_md *lum, size_t size)
2492 {
2493         struct lov_user_md_v1 *v1;
2494         struct lov_user_md_v3 *v3;
2495         struct lov_foreign_md *lfm;
2496         __u16 stripe_count;
2497         ENTRY;
2498
2499         CDEBUG(D_IOCTL, "swabbing lov_user_md\n");
2500         switch (lum->lmm_magic) {
2501         case __swab32(LOV_MAGIC_V1):
2502         case LOV_USER_MAGIC_V1:
2503         {
2504                 v1 = (struct lov_user_md_v1 *)lum;
2505                 stripe_count = v1->lmm_stripe_count;
2506
2507                 if (lum->lmm_magic != LOV_USER_MAGIC_V1)
2508                         __swab16s(&stripe_count);
2509
2510                 lustre_swab_lov_user_md_v1(v1);
2511                 if (size > sizeof(*v1))
2512                         lustre_swab_lov_user_md_objects(v1->lmm_objects,
2513                                                         stripe_count);
2514
2515                 break;
2516         }
2517         case __swab32(LOV_MAGIC_V3):
2518         case LOV_USER_MAGIC_V3:
2519         {
2520                 v3 = (struct lov_user_md_v3 *)lum;
2521                 stripe_count = v3->lmm_stripe_count;
2522
2523                 if (lum->lmm_magic != LOV_USER_MAGIC_V3)
2524                         __swab16s(&stripe_count);
2525
2526                 lustre_swab_lov_user_md_v3(v3);
2527                 if (size > sizeof(*v3))
2528                         lustre_swab_lov_user_md_objects(v3->lmm_objects,
2529                                                         stripe_count);
2530                 break;
2531         }
2532         case __swab32(LOV_USER_MAGIC_SPECIFIC):
2533         case LOV_USER_MAGIC_SPECIFIC:
2534         {
2535                 v3 = (struct lov_user_md_v3 *)lum;
2536                 stripe_count = v3->lmm_stripe_count;
2537
2538                 if (lum->lmm_magic != LOV_USER_MAGIC_SPECIFIC)
2539                         __swab16s(&stripe_count);
2540
2541                 lustre_swab_lov_user_md_v3(v3);
2542                 lustre_swab_lov_user_md_objects(v3->lmm_objects, stripe_count);
2543                 break;
2544         }
2545         case __swab32(LOV_MAGIC_COMP_V1):
2546         case LOV_USER_MAGIC_COMP_V1:
2547                 lustre_swab_lov_comp_md_v1((struct lov_comp_md_v1 *)lum);
2548                 break;
2549         case __swab32(LOV_MAGIC_FOREIGN):
2550         case LOV_USER_MAGIC_FOREIGN:
2551         {
2552                 lfm = (struct lov_foreign_md *)lum;
2553                 __swab32s(&lfm->lfm_magic);
2554                 __swab32s(&lfm->lfm_length);
2555                 __swab32s(&lfm->lfm_type);
2556                 __swab32s(&lfm->lfm_flags);
2557                 break;
2558         }
2559         default:
2560                 CDEBUG(D_IOCTL, "Invalid LOV magic %08x\n", lum->lmm_magic);
2561         }
2562 }
2563 EXPORT_SYMBOL(lustre_swab_lov_user_md);
2564
2565 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2566 {
2567         ENTRY;
2568         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2569         __swab32s(&lmm->lmm_magic);
2570         __swab32s(&lmm->lmm_pattern);
2571         lustre_swab_lmm_oi(&lmm->lmm_oi);
2572         __swab32s(&lmm->lmm_stripe_size);
2573         __swab16s(&lmm->lmm_stripe_count);
2574         __swab16s(&lmm->lmm_layout_gen);
2575         EXIT;
2576 }
2577 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2578
2579 void lustre_swab_ldlm_res_id(struct ldlm_res_id *id)
2580 {
2581         int i;
2582
2583         for (i = 0; i < RES_NAME_SIZE; i++)
2584                 __swab64s(&id->name[i]);
2585 }
2586
2587 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2588 {
2589         /* the lock data is a union and the first two fields are always an
2590          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2591          * data the same way.
2592          */
2593         __swab64s(&d->l_extent.start);
2594         __swab64s(&d->l_extent.end);
2595         __swab64s(&d->l_extent.gid);
2596         __swab64s(&d->l_flock.lfw_owner);
2597         __swab32s(&d->l_flock.lfw_pid);
2598 }
2599
2600 void lustre_swab_ldlm_intent(struct ldlm_intent *i)
2601 {
2602         __swab64s(&i->opc);
2603 }
2604
2605 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2606 {
2607         __swab32s(&r->lr_type);
2608         BUILD_BUG_ON(offsetof(typeof(*r), lr_pad) == 0);
2609         lustre_swab_ldlm_res_id(&r->lr_name);
2610 }
2611
2612 void lustre_swab_ldlm_lock_desc(struct ldlm_lock_desc *l)
2613 {
2614         lustre_swab_ldlm_resource_desc(&l->l_resource);
2615         __swab32s(&l->l_req_mode);
2616         __swab32s(&l->l_granted_mode);
2617         lustre_swab_ldlm_policy_data(&l->l_policy_data);
2618 }
2619
2620 void lustre_swab_ldlm_request(struct ldlm_request *rq)
2621 {
2622         __swab32s(&rq->lock_flags);
2623         lustre_swab_ldlm_lock_desc(&rq->lock_desc);
2624         __swab32s(&rq->lock_count);
2625         /* lock_handle[] opaque */
2626 }
2627
2628 void lustre_swab_ldlm_reply(struct ldlm_reply *r)
2629 {
2630         __swab32s(&r->lock_flags);
2631         BUILD_BUG_ON(offsetof(typeof(*r), lock_padding) == 0);
2632         lustre_swab_ldlm_lock_desc(&r->lock_desc);
2633         /* lock_handle opaque */
2634         __swab64s(&r->lock_policy_res1);
2635         __swab64s(&r->lock_policy_res2);
2636 }
2637
2638 void lustre_swab_quota_body(struct quota_body *b)
2639 {
2640         lustre_swab_lu_fid(&b->qb_fid);
2641         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2642         __swab32s(&b->qb_flags);
2643         __swab64s(&b->qb_count);
2644         __swab64s(&b->qb_usage);
2645         __swab64s(&b->qb_slv_ver);
2646 }
2647
2648 /* Dump functions */
2649 void dump_ioo(struct obd_ioobj *ioo)
2650 {
2651         CDEBUG(D_RPCTRACE,
2652                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2653                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2654                ioo->ioo_bufcnt);
2655 }
2656
2657 void dump_rniobuf(struct niobuf_remote *nb)
2658 {
2659         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2660                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2661 }
2662
2663 void dump_obdo(struct obdo *oa)
2664 {
2665         u64 valid = oa->o_valid;
2666
2667         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2668         if (valid & OBD_MD_FLID)
2669                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2670         if (valid & OBD_MD_FLFID)
2671                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2672                        oa->o_parent_seq);
2673         if (valid & OBD_MD_FLSIZE)
2674                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2675         if (valid & OBD_MD_FLMTIME)
2676                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2677         if (valid & OBD_MD_FLATIME)
2678                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2679         if (valid & OBD_MD_FLCTIME)
2680                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2681         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2682                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2683         if (valid & OBD_MD_FLGRANT)
2684                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2685         if (valid & OBD_MD_FLBLKSZ)
2686                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2687         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2688                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2689                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2690                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2691         if (valid & OBD_MD_FLUID)
2692                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2693         if (valid & OBD_MD_FLUID)
2694                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2695         if (valid & OBD_MD_FLGID)
2696                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2697         if (valid & OBD_MD_FLGID)
2698                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2699         if (valid & OBD_MD_FLFLAGS)
2700                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2701         if (valid & OBD_MD_FLNLINK)
2702                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2703         else if (valid & OBD_MD_FLCKSUM)
2704                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2705                        oa->o_nlink);
2706         if (valid & OBD_MD_FLPARENT)
2707                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2708                        oa->o_parent_oid);
2709         if (valid & OBD_MD_FLFID) {
2710                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2711                        oa->o_stripe_idx);
2712                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2713                        oa->o_parent_ver);
2714         }
2715         if (valid & OBD_MD_FLHANDLE)
2716                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2717                        oa->o_handle.cookie);
2718 }
2719
2720 void dump_ost_body(struct ost_body *ob)
2721 {
2722         dump_obdo(&ob->oa);
2723 }
2724
2725 void dump_rcs(__u32 *rc)
2726 {
2727         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2728 }
2729
2730 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2731 {
2732         LASSERT(req->rq_reqmsg);
2733
2734         switch (req->rq_reqmsg->lm_magic) {
2735         case LUSTRE_MSG_MAGIC_V2:
2736                 return req_capsule_req_swabbed(&req->rq_pill,
2737                                                MSG_PTLRPC_BODY_OFF);
2738         default:
2739                 CERROR("bad lustre msg magic: %#08X\n",
2740                        req->rq_reqmsg->lm_magic);
2741         }
2742         return 0;
2743 }
2744
2745 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2746 {
2747         if (unlikely(!req->rq_repmsg))
2748                 return 0;
2749
2750         switch (req->rq_repmsg->lm_magic) {
2751         case LUSTRE_MSG_MAGIC_V2:
2752                 return req_capsule_rep_swabbed(&req->rq_pill,
2753                                                MSG_PTLRPC_BODY_OFF);
2754         default:
2755                 /* uninitialized yet */
2756                 return 0;
2757         }
2758 }
2759
2760 void _debug_req(struct ptlrpc_request *req,
2761                 struct libcfs_debug_msg_data *msgdata, const char *fmt, ...)
2762 {
2763         bool req_ok = req->rq_reqmsg != NULL;
2764         bool rep_ok = false;
2765         lnet_nid_t nid = LNET_NID_ANY;
2766         struct va_format vaf;
2767         va_list args;
2768         int rep_flags = -1;
2769         int rep_status = -1;
2770
2771         spin_lock(&req->rq_early_free_lock);
2772         if (req->rq_repmsg)
2773                 rep_ok = true;
2774
2775         if (req_capsule_req_need_swab(&req->rq_pill)) {
2776                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2777                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2778         }
2779
2780         if (rep_ok) {
2781                 rep_flags = lustre_msg_get_flags(req->rq_repmsg);
2782                 rep_status = lustre_msg_get_status(req->rq_repmsg);
2783         }
2784         spin_unlock(&req->rq_early_free_lock);
2785
2786         if (req->rq_import && req->rq_import->imp_connection)
2787                 nid = req->rq_import->imp_connection->c_peer.nid;
2788         else if (req->rq_export && req->rq_export->exp_connection)
2789                 nid = req->rq_export->exp_connection->c_peer.nid;
2790
2791         va_start(args, fmt);
2792         vaf.fmt = fmt;
2793         vaf.va = &args;
2794         libcfs_debug_msg(msgdata,
2795                          "%pV req@%p x%llu/t%lld(%lld) o%d->%s@%s:%d/%d lens %d/%d e %d to %lld dl %lld ref %d fl " REQ_FLAGS_FMT "/%x/%x rc %d/%d job:'%s'\n",
2796                          &vaf,
2797                          req, req->rq_xid, req->rq_transno,
2798                          req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2799                          req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2800                          req->rq_import ?
2801                          req->rq_import->imp_obd->obd_name :
2802                          req->rq_export ?
2803                          req->rq_export->exp_client_uuid.uuid :
2804                          "<?>",
2805                          libcfs_nid2str(nid),
2806                          req->rq_request_portal, req->rq_reply_portal,
2807                          req->rq_reqlen, req->rq_replen,
2808                          req->rq_early_count, (s64)req->rq_timedout,
2809                          (s64)req->rq_deadline,
2810                          atomic_read(&req->rq_refcount),
2811                          DEBUG_REQ_FLAGS(req),
2812                          req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2813                          rep_flags, req->rq_status, rep_status,
2814                          req_ok ? lustre_msg_get_jobid(req->rq_reqmsg) ?: ""
2815                                 : "");
2816         va_end(args);
2817 }
2818 EXPORT_SYMBOL(_debug_req);
2819
2820 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2821 {
2822         __swab32s(&state->hus_states);
2823         __swab32s(&state->hus_archive_id);
2824 }
2825
2826 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2827 {
2828         __swab32s(&hss->hss_valid);
2829         __swab64s(&hss->hss_setmask);
2830         __swab64s(&hss->hss_clearmask);
2831         __swab32s(&hss->hss_archive_id);
2832 }
2833
2834 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2835 {
2836         __swab64s(&extent->offset);
2837         __swab64s(&extent->length);
2838 }
2839
2840 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2841 {
2842         __swab32s(&action->hca_state);
2843         __swab32s(&action->hca_action);
2844         lustre_swab_hsm_extent(&action->hca_location);
2845 }
2846
2847 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2848 {
2849         lustre_swab_lu_fid(&hui->hui_fid);
2850         lustre_swab_hsm_extent(&hui->hui_extent);
2851 }
2852
2853 void lustre_swab_lu_extent(struct lu_extent *le)
2854 {
2855         __swab64s(&le->e_start);
2856         __swab64s(&le->e_end);
2857 }
2858
2859 void lustre_swab_layout_intent(struct layout_intent *li)
2860 {
2861         __swab32s(&li->li_opc);
2862         __swab32s(&li->li_flags);
2863         lustre_swab_lu_extent(&li->li_extent);
2864 }
2865
2866 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2867 {
2868         lustre_swab_lu_fid(&hpk->hpk_fid);
2869         __swab64s(&hpk->hpk_cookie);
2870         __swab64s(&hpk->hpk_extent.offset);
2871         __swab64s(&hpk->hpk_extent.length);
2872         __swab16s(&hpk->hpk_flags);
2873         __swab16s(&hpk->hpk_errval);
2874 }
2875
2876 void lustre_swab_hsm_request(struct hsm_request *hr)
2877 {
2878         __swab32s(&hr->hr_action);
2879         __swab32s(&hr->hr_archive_id);
2880         __swab64s(&hr->hr_flags);
2881         __swab32s(&hr->hr_itemcount);
2882         __swab32s(&hr->hr_data_len);
2883 }
2884
2885 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2886 {
2887         __swab64s(&msl->msl_flags);
2888 }
2889
2890 void lustre_swab_close_data(struct close_data *cd)
2891 {
2892         lustre_swab_lu_fid(&cd->cd_fid);
2893         __swab64s(&cd->cd_data_version);
2894 }
2895
2896 void lustre_swab_close_data_resync_done(struct close_data_resync_done *resync)
2897 {
2898         int i;
2899
2900         __swab32s(&resync->resync_count);
2901         /* after swab, resync_count must in CPU endian */
2902         if (resync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
2903                 for (i = 0; i < resync->resync_count; i++)
2904                         __swab32s(&resync->resync_ids_inline[i]);
2905         }
2906 }
2907 EXPORT_SYMBOL(lustre_swab_close_data_resync_done);
2908
2909 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2910 {
2911         __swab32s(&lr->lr_event);
2912         __swab32s(&lr->lr_index);
2913         __swab32s(&lr->lr_flags);
2914         __swab32s(&lr->lr_valid);
2915         __swab32s(&lr->lr_speed);
2916         __swab16s(&lr->lr_version);
2917         __swab16s(&lr->lr_active);
2918         __swab16s(&lr->lr_param);
2919         __swab16s(&lr->lr_async_windows);
2920         __swab32s(&lr->lr_flags);
2921         lustre_swab_lu_fid(&lr->lr_fid);
2922         lustre_swab_lu_fid(&lr->lr_fid2);
2923         __swab32s(&lr->lr_comp_id);
2924         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_0) == 0);
2925         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_1) == 0);
2926         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_2) == 0);
2927         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_3) == 0);
2928 }
2929
2930 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2931 {
2932         __swab32s(&lr->lr_status);
2933         BUILD_BUG_ON(offsetof(typeof(*lr), lr_padding_1) == 0);
2934         __swab64s(&lr->lr_repaired);
2935 }
2936
2937 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
2938 {
2939         lustre_swab_lu_fid(&rec->lor_fid);
2940         __swab32s(&rec->lor_uid);
2941         __swab32s(&rec->lor_gid);
2942 }
2943
2944 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2945 {
2946         lustre_swab_lu_fid(&ent->loe_key);
2947         lustre_swab_orphan_rec(&ent->loe_rec);
2948 }
2949 EXPORT_SYMBOL(lustre_swab_orphan_ent);
2950
2951 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
2952 {
2953         lustre_swab_lu_fid(&ent->loe_key);
2954         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2955         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2956         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding) == 0);
2957 }
2958 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
2959
2960 void lustre_swab_orphan_ent_v3(struct lu_orphan_ent_v3 *ent)
2961 {
2962         lustre_swab_lu_fid(&ent->loe_key);
2963         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2964         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2965         __swab32s(&ent->loe_rec.lor_layout_version);
2966         __swab32s(&ent->loe_rec.lor_range);
2967         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding_1) == 0);
2968         BUILD_BUG_ON(offsetof(typeof(ent->loe_rec), lor_padding_2) == 0);
2969 }
2970 EXPORT_SYMBOL(lustre_swab_orphan_ent_v3);
2971
2972 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
2973 {
2974         __swab16s(&ladvise->lla_advice);
2975         __swab16s(&ladvise->lla_value1);
2976         __swab32s(&ladvise->lla_value2);
2977         __swab64s(&ladvise->lla_start);
2978         __swab64s(&ladvise->lla_end);
2979         __swab32s(&ladvise->lla_value3);
2980         __swab32s(&ladvise->lla_value4);
2981 }
2982 EXPORT_SYMBOL(lustre_swab_ladvise);
2983
2984 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
2985 {
2986         __swab32s(&ladvise_hdr->lah_magic);
2987         __swab32s(&ladvise_hdr->lah_count);
2988         __swab64s(&ladvise_hdr->lah_flags);
2989         __swab32s(&ladvise_hdr->lah_value1);
2990         __swab32s(&ladvise_hdr->lah_value2);
2991         __swab64s(&ladvise_hdr->lah_value3);
2992 }
2993 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);