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, 2016, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/ptlrpc/pack_generic.c
  33  *
  34  * (Un)packing of OST requests
  35  *
  36  * Author: Peter J. Braam <braam@clusterfs.com>
  37  * Author: Phil Schwan <phil@clusterfs.com>
  38  * Author: Eric Barton <eeb@clusterfs.com>
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_RPC
  42
  43 #include <libcfs/libcfs.h>
  44
  45 #include <lustre/ll_fiemap.h>
  46
  47 #include <llog_swab.h>
  48 #include <lustre_net.h>
  49 #include <lustre_swab.h>
  50 #include <obd_cksum.h>
  51 #include <obd_class.h>
  52 #include <obd_support.h>
  53 #include <obj_update.h>
  54
  55 #include "ptlrpc_internal.h"
  56
  57 static inline __u32 lustre_msg_hdr_size_v2(__u32 count)
  58 {
  59         return cfs_size_round(offsetof(struct lustre_msg_v2,
  60                                        lm_buflens[count]));
  61 }
  62
  63 __u32 lustre_msg_hdr_size(__u32 magic, __u32 count)
  64 {
  65         switch (magic) {
  66         case LUSTRE_MSG_MAGIC_V2:
  67                 return lustre_msg_hdr_size_v2(count);
  68         default:
  69                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  70                 return 0;
  71         }
  72 }
  73
  74 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  75                             __u32 index)
  76 {
  77         if (inout)
  78                 lustre_set_req_swabbed(req, index);
  79         else
  80                 lustre_set_rep_swabbed(req, index);
  81 }
  82
  83 int ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  84                          __u32 index)
  85 {
  86         if (inout)
  87                 return (ptlrpc_req_need_swab(req) &&
  88                         !lustre_req_swabbed(req, index));
  89         else
  90                 return (ptlrpc_rep_need_swab(req) &&
  91                         !lustre_rep_swabbed(req, index));
  92 }
  93
  94 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  95                                                 __u32 version)
  96 {
  97         __u32 ver = lustre_msg_get_version(msg);
  98         return (ver & LUSTRE_VERSION_MASK) != version;
  99 }
 100
 101 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version)
 102 {
 103 #define LUSTRE_MSG_MAGIC_V1 0x0BD00BD0
 104         switch (msg->lm_magic) {
 105         case LUSTRE_MSG_MAGIC_V1:
 106                 CERROR("msg v1 not supported - please upgrade you system\n");
 107                 return -EINVAL;
 108         case LUSTRE_MSG_MAGIC_V2:
 109                 return lustre_msg_check_version_v2(msg, version);
 110         default:
 111                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 112                 return -EPROTO;
 113         }
 114 #undef LUSTRE_MSG_MAGIC_V1
 115 }
 116
 117 /* early reply size */
 118 __u32 lustre_msg_early_size()
 119 {
 120         static __u32 size;
 121         if (!size) {
 122                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 123                  * with the old client (< 2.3) which doesn't have pb_jobid
 124                  * in the ptlrpc_body.
 125                  *
 126                  * XXX Remove this whenever we dorp interoprability with such
 127                  *     client.
 128                  */
 129                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 130                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 131         }
 132         return size;
 133 }
 134 EXPORT_SYMBOL(lustre_msg_early_size);
 135
 136 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
 137 {
 138         __u32 size;
 139         int i;
 140
 141         size = lustre_msg_hdr_size_v2(count);
 142         for (i = 0; i < count; i++)
 143                 size += cfs_size_round(lengths[i]);
 144
 145         return size;
 146 }
 147 EXPORT_SYMBOL(lustre_msg_size_v2);
 148
 149 /* This returns the size of the buffer that is required to hold a lustre_msg
 150  * with the given sub-buffer lengths.
 151  * NOTE: this should only be used for NEW requests, and should always be
 152  *       in the form of a v2 request.  If this is a connection to a v1
 153  *       target then the first buffer will be stripped because the ptlrpc
 154  *       data is part of the lustre_msg_v1 header. b=14043 */
 155 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 156 {
 157         __u32 size[] = { sizeof(struct ptlrpc_body) };
 158
 159         if (!lens) {
 160                 LASSERT(count == 1);
 161                 lens = size;
 162         }
 163
 164         LASSERT(count > 0);
 165         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 166
 167         switch (magic) {
 168         case LUSTRE_MSG_MAGIC_V2:
 169                 return lustre_msg_size_v2(count, lens);
 170         default:
 171                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 172                 return 0;
 173         }
 174 }
 175
 176 /* This is used to determine the size of a buffer that was already packed
 177  * and will correctly handle the different message formats. */
 178 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 179 {
 180         switch (msg->lm_magic) {
 181         case LUSTRE_MSG_MAGIC_V2:
 182                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 183         default:
 184                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 185                 return 0;
 186         }
 187 }
 188
 189 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 190                         char **bufs)
 191 {
 192         char *ptr;
 193         int i;
 194
 195         msg->lm_bufcount = count;
 196         /* XXX: lm_secflvr uninitialized here */
 197         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 198
 199         for (i = 0; i < count; i++)
 200                 msg->lm_buflens[i] = lens[i];
 201
 202         if (bufs == NULL)
 203                 return;
 204
 205         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 206         for (i = 0; i < count; i++) {
 207                 char *tmp = bufs[i];
 208                 LOGL(tmp, lens[i], ptr);
 209         }
 210 }
 211 EXPORT_SYMBOL(lustre_init_msg_v2);
 212
 213 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 214                                   int count, __u32 *lens, char **bufs)
 215 {
 216         int reqlen, rc;
 217
 218         reqlen = lustre_msg_size_v2(count, lens);
 219
 220         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 221         if (rc)
 222                 return rc;
 223
 224         req->rq_reqlen = reqlen;
 225
 226         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 227         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 228         return 0;
 229 }
 230
 231 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 232                         __u32 *lens, char **bufs)
 233 {
 234         __u32 size[] = { sizeof(struct ptlrpc_body) };
 235
 236         if (!lens) {
 237                 LASSERT(count == 1);
 238                 lens = size;
 239         }
 240
 241         LASSERT(count > 0);
 242         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 243
 244         /* only use new format, we don't need to be compatible with 1.4 */
 245         magic = LUSTRE_MSG_MAGIC_V2;
 246
 247         switch (magic) {
 248         case LUSTRE_MSG_MAGIC_V2:
 249                 return lustre_pack_request_v2(req, count, lens, bufs);
 250         default:
 251                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 252                 return -EINVAL;
 253         }
 254 }
 255
 256 #if RS_DEBUG
 257 struct list_head ptlrpc_rs_debug_lru =
 258         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 259 spinlock_t ptlrpc_rs_debug_lock;
 260
 261 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 262 do {                                                                    \
 263         spin_lock(&ptlrpc_rs_debug_lock);                               \
 264         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 265         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 266 } while (0)
 267
 268 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 269 do {                                                                    \
 270         spin_lock(&ptlrpc_rs_debug_lock);                               \
 271         list_del(&(rs)->rs_debug_list);                         \
 272         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 273 } while (0)
 274 #else
 275 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 276 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 277 #endif
 278
 279 struct ptlrpc_reply_state *
 280 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 281 {
 282         struct ptlrpc_reply_state *rs = NULL;
 283
 284         spin_lock(&svcpt->scp_rep_lock);
 285
 286         /* See if we have anything in a pool, and wait if nothing */
 287         while (list_empty(&svcpt->scp_rep_idle)) {
 288                 struct l_wait_info      lwi;
 289                 int                     rc;
 290
 291                 spin_unlock(&svcpt->scp_rep_lock);
 292                 /* If we cannot get anything for some long time, we better
 293                  * bail out instead of waiting infinitely */
 294                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 295                 rc = l_wait_event(svcpt->scp_rep_waitq,
 296                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 297                 if (rc != 0)
 298                         goto out;
 299                 spin_lock(&svcpt->scp_rep_lock);
 300         }
 301
 302         rs = list_entry(svcpt->scp_rep_idle.next,
 303                             struct ptlrpc_reply_state, rs_list);
 304         list_del(&rs->rs_list);
 305
 306         spin_unlock(&svcpt->scp_rep_lock);
 307
 308         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 309         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 310         rs->rs_svcpt = svcpt;
 311         rs->rs_prealloc = 1;
 312 out:
 313         return rs;
 314 }
 315
 316 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 317 {
 318         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 319
 320         spin_lock(&svcpt->scp_rep_lock);
 321         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 322         spin_unlock(&svcpt->scp_rep_lock);
 323         wake_up(&svcpt->scp_rep_waitq);
 324 }
 325
 326 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 327                          __u32 *lens, char **bufs, int flags)
 328 {
 329         struct ptlrpc_reply_state *rs;
 330         int                        msg_len, rc;
 331         ENTRY;
 332
 333         LASSERT(req->rq_reply_state == NULL);
 334
 335         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 336                 spin_lock(&req->rq_lock);
 337                 req->rq_packed_final = 1;
 338                 spin_unlock(&req->rq_lock);
 339         }
 340
 341         msg_len = lustre_msg_size_v2(count, lens);
 342         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 343         if (rc)
 344                 RETURN(rc);
 345
 346         rs = req->rq_reply_state;
 347         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 348         rs->rs_cb_id.cbid_fn = reply_out_callback;
 349         rs->rs_cb_id.cbid_arg = rs;
 350         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 351         INIT_LIST_HEAD(&rs->rs_exp_list);
 352         INIT_LIST_HEAD(&rs->rs_obd_list);
 353         INIT_LIST_HEAD(&rs->rs_list);
 354         spin_lock_init(&rs->rs_lock);
 355
 356         req->rq_replen = msg_len;
 357         req->rq_reply_state = rs;
 358         req->rq_repmsg = rs->rs_msg;
 359
 360         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 361         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 362
 363         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 364
 365         RETURN(0);
 366 }
 367 EXPORT_SYMBOL(lustre_pack_reply_v2);
 368
 369 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 370                             char **bufs, int flags)
 371 {
 372         int rc = 0;
 373         __u32 size[] = { sizeof(struct ptlrpc_body) };
 374
 375         if (!lens) {
 376                 LASSERT(count == 1);
 377                 lens = size;
 378         }
 379
 380         LASSERT(count > 0);
 381         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 382
 383         switch (req->rq_reqmsg->lm_magic) {
 384         case LUSTRE_MSG_MAGIC_V2:
 385                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 386                 break;
 387         default:
 388                 LASSERTF(0, "incorrect message magic: %08x\n",
 389                          req->rq_reqmsg->lm_magic);
 390                 rc = -EINVAL;
 391         }
 392         if (rc != 0)
 393                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 394                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 395         return rc;
 396 }
 397
 398 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 399                       char **bufs)
 400 {
 401         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 402 }
 403 EXPORT_SYMBOL(lustre_pack_reply);
 404
 405 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
 406 {
 407         __u32 i, offset, buflen, bufcount;
 408
 409         LASSERT(m != NULL);
 410
 411         bufcount = m->lm_bufcount;
 412         if (unlikely(n >= bufcount)) {
 413                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 414                        m, n, bufcount);
 415                 return NULL;
 416         }
 417
 418         buflen = m->lm_buflens[n];
 419         if (unlikely(buflen < min_size)) {
 420                 CERROR("msg %p buffer[%d] size %d too small "
 421                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 422                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 423                 return NULL;
 424         }
 425
 426         offset = lustre_msg_hdr_size_v2(bufcount);
 427         for (i = 0; i < n; i++)
 428                 offset += cfs_size_round(m->lm_buflens[i]);
 429
 430         return (char *)m + offset;
 431 }
 432
 433 void *lustre_msg_buf(struct lustre_msg *m, __u32 n, __u32 min_size)
 434 {
 435         switch (m->lm_magic) {
 436         case LUSTRE_MSG_MAGIC_V2:
 437                 return lustre_msg_buf_v2(m, n, min_size);
 438         default:
 439                 LASSERTF(0, "incorrect message magic: %08x (msg:%p)\n",
 440                          m->lm_magic, m);
 441                 return NULL;
 442         }
 443 }
 444 EXPORT_SYMBOL(lustre_msg_buf);
 445
 446 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 447                                 unsigned int newlen, int move_data)
 448 {
 449         char   *tail = NULL, *newpos;
 450         int     tail_len = 0, n;
 451
 452         LASSERT(msg);
 453         LASSERT(msg->lm_bufcount > segment);
 454         LASSERT(msg->lm_buflens[segment] >= newlen);
 455
 456         if (msg->lm_buflens[segment] == newlen)
 457                 goto out;
 458
 459         if (move_data && msg->lm_bufcount > segment + 1) {
 460                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 461                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 462                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 463         }
 464
 465         msg->lm_buflens[segment] = newlen;
 466
 467         if (tail && tail_len) {
 468                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 469                 LASSERT(newpos <= tail);
 470                 if (newpos != tail)
 471                         memmove(newpos, tail, tail_len);
 472         }
 473 out:
 474         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 475 }
 476
 477 /*
 478  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 479  * we also move data forward from @segment + 1.
 480  *
 481  * if @newlen == 0, we remove the segment completely, but we still keep the
 482  * totally bufcount the same to save possible data moving. this will leave a
 483  * unused segment with size 0 at the tail, but that's ok.
 484  *
 485  * return new msg size after shrinking.
 486  *
 487  * CAUTION:
 488  * + if any buffers higher than @segment has been filled in, must call shrink
 489  *   with non-zero @move_data.
 490  * + caller should NOT keep pointers to msg buffers which higher than @segment
 491  *   after call shrink.
 492  */
 493 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 494                       unsigned int newlen, int move_data)
 495 {
 496         switch (msg->lm_magic) {
 497         case LUSTRE_MSG_MAGIC_V2:
 498                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 499         default:
 500                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 501         }
 502 }
 503 EXPORT_SYMBOL(lustre_shrink_msg);
 504
 505 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 506 {
 507         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 508
 509         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 510         LASSERT(!rs->rs_difficult || rs->rs_handled);
 511         LASSERT(!rs->rs_on_net);
 512         LASSERT(!rs->rs_scheduled);
 513         LASSERT(rs->rs_export == NULL);
 514         LASSERT(rs->rs_nlocks == 0);
 515         LASSERT(list_empty(&rs->rs_exp_list));
 516         LASSERT(list_empty(&rs->rs_obd_list));
 517
 518         sptlrpc_svc_free_rs(rs);
 519 }
 520
 521 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 522 {
 523         int swabbed, required_len, i;
 524
 525         /* Now we know the sender speaks my language. */
 526         required_len = lustre_msg_hdr_size_v2(0);
 527         if (len < required_len) {
 528                 /* can't even look inside the message */
 529                 CERROR("message length %d too small for lustre_msg\n", len);
 530                 return -EINVAL;
 531         }
 532
 533         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 534
 535         if (swabbed) {
 536                 __swab32s(&m->lm_magic);
 537                 __swab32s(&m->lm_bufcount);
 538                 __swab32s(&m->lm_secflvr);
 539                 __swab32s(&m->lm_repsize);
 540                 __swab32s(&m->lm_cksum);
 541                 __swab32s(&m->lm_flags);
 542                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 543                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 544         }
 545
 546         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 547         if (len < required_len) {
 548                 /* didn't receive all the buffer lengths */
 549                 CERROR ("message length %d too small for %d buflens\n",
 550                         len, m->lm_bufcount);
 551                 return -EINVAL;
 552         }
 553
 554         for (i = 0; i < m->lm_bufcount; i++) {
 555                 if (swabbed)
 556                         __swab32s(&m->lm_buflens[i]);
 557                 required_len += cfs_size_round(m->lm_buflens[i]);
 558         }
 559
 560         if (len < required_len) {
 561                 CERROR("len: %d, required_len %d\n", len, required_len);
 562                 CERROR("bufcount: %d\n", m->lm_bufcount);
 563                 for (i = 0; i < m->lm_bufcount; i++)
 564                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 565                 return -EINVAL;
 566         }
 567
 568         return swabbed;
 569 }
 570
 571 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 572 {
 573         int required_len, rc;
 574         ENTRY;
 575
 576         /* We can provide a slightly better error log, if we check the
 577          * message magic and version first.  In the future, struct
 578          * lustre_msg may grow, and we'd like to log a version mismatch,
 579          * rather than a short message.
 580          *
 581          */
 582         required_len = offsetof(struct lustre_msg, lm_magic) +
 583                        sizeof(m->lm_magic);
 584         if (len < required_len) {
 585                 /* can't even look inside the message */
 586                 CERROR("message length %d too small for magic/version check\n",
 587                        len);
 588                 RETURN(-EINVAL);
 589         }
 590
 591         rc = lustre_unpack_msg_v2(m, len);
 592
 593         RETURN(rc);
 594 }
 595 EXPORT_SYMBOL(__lustre_unpack_msg);
 596
 597 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 598 {
 599         int rc;
 600         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 601         if (rc == 1) {
 602                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 603                 rc = 0;
 604         }
 605         return rc;
 606 }
 607
 608 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 609 {
 610         int rc;
 611         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 612         if (rc == 1) {
 613                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 614                 rc = 0;
 615         }
 616         return rc;
 617 }
 618
 619 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 620                                                const int inout, int offset)
 621 {
 622         struct ptlrpc_body *pb;
 623         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 624
 625         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 626         if (!pb) {
 627                 CERROR("error unpacking ptlrpc body\n");
 628                 return -EFAULT;
 629         }
 630         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 631                 lustre_swab_ptlrpc_body(pb);
 632                 ptlrpc_buf_set_swabbed(req, inout, offset);
 633         }
 634
 635         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 636                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 637                  return -EINVAL;
 638         }
 639
 640         if (!inout)
 641                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 642
 643         return 0;
 644 }
 645
 646 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 647 {
 648         switch (req->rq_reqmsg->lm_magic) {
 649         case LUSTRE_MSG_MAGIC_V2:
 650                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 651         default:
 652                 CERROR("bad lustre msg magic: %08x\n",
 653                        req->rq_reqmsg->lm_magic);
 654                 return -EINVAL;
 655         }
 656 }
 657
 658 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 659 {
 660         switch (req->rq_repmsg->lm_magic) {
 661         case LUSTRE_MSG_MAGIC_V2:
 662                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 663         default:
 664                 CERROR("bad lustre msg magic: %08x\n",
 665                        req->rq_repmsg->lm_magic);
 666                 return -EINVAL;
 667         }
 668 }
 669
 670 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 671 {
 672         if (n >= m->lm_bufcount)
 673                 return 0;
 674
 675         return m->lm_buflens[n];
 676 }
 677
 678 /**
 679  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 680  * \param m lustre_msg (request or reply) to look at
 681  * \param n message index (base 0)
 682  *
 683  * returns zero for non-existent message indices
 684  */
 685 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 686 {
 687         switch (m->lm_magic) {
 688         case LUSTRE_MSG_MAGIC_V2:
 689                 return lustre_msg_buflen_v2(m, n);
 690         default:
 691                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 692                 return 0;
 693         }
 694 }
 695 EXPORT_SYMBOL(lustre_msg_buflen);
 696
 697 static inline void
 698 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 699 {
 700         if (n >= m->lm_bufcount)
 701                 LBUG();
 702
 703         m->lm_buflens[n] = len;
 704 }
 705
 706 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 707 {
 708         switch (m->lm_magic) {
 709         case LUSTRE_MSG_MAGIC_V2:
 710                 lustre_msg_set_buflen_v2(m, n, len);
 711                 return;
 712         default:
 713                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 714         }
 715 }
 716
 717 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 718  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 719 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 720 {
 721         switch (m->lm_magic) {
 722         case LUSTRE_MSG_MAGIC_V2:
 723                 return m->lm_bufcount;
 724         default:
 725                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 726                 return 0;
 727         }
 728 }
 729
 730 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 731 {
 732         /* max_len == 0 means the string should fill the buffer */
 733         char *str;
 734         __u32 slen, blen;
 735
 736         switch (m->lm_magic) {
 737         case LUSTRE_MSG_MAGIC_V2:
 738                 str = lustre_msg_buf_v2(m, index, 0);
 739                 blen = lustre_msg_buflen_v2(m, index);
 740                 break;
 741         default:
 742                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 743         }
 744
 745         if (str == NULL) {
 746                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 747                 return NULL;
 748         }
 749
 750         slen = strnlen(str, blen);
 751
 752         if (slen == blen) {                     /* not NULL terminated */
 753                 CERROR("can't unpack non-NULL terminated string in "
 754                         "msg %p buffer[%d] len %d\n", m, index, blen);
 755                 return NULL;
 756         }
 757
 758         if (max_len == 0) {
 759                 if (slen != blen - 1) {
 760                         CERROR("can't unpack short string in msg %p "
 761                                "buffer[%d] len %d: strlen %d\n",
 762                                m, index, blen, slen);
 763                         return NULL;
 764                 }
 765         } else if (slen > max_len) {
 766                 CERROR("can't unpack oversized string in msg %p "
 767                        "buffer[%d] len %d strlen %d: max %d expected\n",
 768                        m, index, blen, slen, max_len);
 769                 return NULL;
 770         }
 771
 772         return str;
 773 }
 774
 775 /* Wrap up the normal fixed length cases */
 776 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 777                                       __u32 min_size, void *swabber)
 778 {
 779         void *ptr = NULL;
 780
 781         LASSERT(msg != NULL);
 782         switch (msg->lm_magic) {
 783         case LUSTRE_MSG_MAGIC_V2:
 784                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 785                 break;
 786         default:
 787                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 788         }
 789
 790         if (ptr != NULL && swabber != NULL)
 791                 ((void (*)(void *))swabber)(ptr);
 792
 793         return ptr;
 794 }
 795
 796 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 797 {
 798         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 799                                  sizeof(struct ptlrpc_body_v2));
 800 }
 801
 802 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
 803 {
 804         switch (msg->lm_magic) {
 805         case LUSTRE_MSG_MAGIC_V2:
 806                 /* already in host endian */
 807                 return msg->lm_flags;
 808         default:
 809                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 810                 return 0;
 811         }
 812 }
 813 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 814
 815 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 816 {
 817         switch (msg->lm_magic) {
 818         case LUSTRE_MSG_MAGIC_V2:
 819                 msg->lm_flags = flags;
 820                 return;
 821         default:
 822                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 823         }
 824 }
 825
 826 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 827 {
 828         switch (msg->lm_magic) {
 829         case LUSTRE_MSG_MAGIC_V2: {
 830                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 831                 if (pb != NULL)
 832                         return pb->pb_flags;
 833
 834                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 835         }
 836         /* no break */
 837         default:
 838                 /* flags might be printed in debug code while message
 839                  * uninitialized */
 840                 return 0;
 841         }
 842 }
 843 EXPORT_SYMBOL(lustre_msg_get_flags);
 844
 845 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 846 {
 847         switch (msg->lm_magic) {
 848         case LUSTRE_MSG_MAGIC_V2: {
 849                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 850                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 851                 pb->pb_flags |= flags;
 852                 return;
 853         }
 854         default:
 855                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 856         }
 857 }
 858 EXPORT_SYMBOL(lustre_msg_add_flags);
 859
 860 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
 861 {
 862         switch (msg->lm_magic) {
 863         case LUSTRE_MSG_MAGIC_V2: {
 864                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 865                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 866                 pb->pb_flags = flags;
 867                 return;
 868         }
 869         default:
 870                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 871         }
 872 }
 873
 874 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 875 {
 876         switch (msg->lm_magic) {
 877         case LUSTRE_MSG_MAGIC_V2: {
 878                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 879                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 880                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
 881                 return;
 882         }
 883         default:
 884                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 885         }
 886 }
 887 EXPORT_SYMBOL(lustre_msg_clear_flags);
 888
 889 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 890 {
 891         switch (msg->lm_magic) {
 892         case LUSTRE_MSG_MAGIC_V2: {
 893                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 894                 if (pb != NULL)
 895                         return pb->pb_op_flags;
 896
 897                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 898         }
 899         /* no break */
 900         default:
 901                 return 0;
 902         }
 903 }
 904
 905 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 906 {
 907         switch (msg->lm_magic) {
 908         case LUSTRE_MSG_MAGIC_V2: {
 909                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 910                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 911                 pb->pb_op_flags |= flags;
 912                 return;
 913         }
 914         default:
 915                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 916         }
 917 }
 918 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 919
 920 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 921 {
 922         switch (msg->lm_magic) {
 923         case LUSTRE_MSG_MAGIC_V2: {
 924                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 925                 if (pb == NULL) {
 926                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 927                         return NULL;
 928                 }
 929                 return &pb->pb_handle;
 930         }
 931         default:
 932                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 933                 return NULL;
 934         }
 935 }
 936
 937 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 938 {
 939         switch (msg->lm_magic) {
 940         case LUSTRE_MSG_MAGIC_V2: {
 941                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 942                 if (pb == NULL) {
 943                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 944                         return PTL_RPC_MSG_ERR;
 945                 }
 946                 return pb->pb_type;
 947         }
 948         default:
 949                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 950                 return PTL_RPC_MSG_ERR;
 951         }
 952 }
 953 EXPORT_SYMBOL(lustre_msg_get_type);
 954
 955 __u32 lustre_msg_get_version(struct lustre_msg *msg)
 956 {
 957         switch (msg->lm_magic) {
 958         case LUSTRE_MSG_MAGIC_V2: {
 959                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 960                 if (pb == NULL) {
 961                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 962                         return 0;
 963                 }
 964                 return pb->pb_version;
 965         }
 966         default:
 967                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 968                 return 0;
 969         }
 970 }
 971
 972 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
 973 {
 974         switch (msg->lm_magic) {
 975         case LUSTRE_MSG_MAGIC_V2: {
 976                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 977                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 978                 pb->pb_version |= version;
 979                 return;
 980         }
 981         default:
 982                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 983         }
 984 }
 985
 986 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
 987 {
 988         switch (msg->lm_magic) {
 989         case LUSTRE_MSG_MAGIC_V2: {
 990                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 991                 if (pb == NULL) {
 992                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 993                         return 0;
 994                 }
 995                 return pb->pb_opc;
 996         }
 997         default:
 998                 CERROR("incorrect message magic: %08x (msg:%p)\n",
 999                        msg->lm_magic, msg);
1000                 return 0;
1001         }
1002 }
1003 EXPORT_SYMBOL(lustre_msg_get_opc);
1004
1005 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1006 {
1007         switch (msg->lm_magic) {
1008         case LUSTRE_MSG_MAGIC_V2: {
1009                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1010                 if (pb == NULL) {
1011                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1012                         return 0;
1013                 }
1014                 return pb->pb_last_xid;
1015         }
1016         default:
1017                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1018                 return 0;
1019         }
1020 }
1021 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1022
1023 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1024 {
1025         switch (msg->lm_magic) {
1026         case LUSTRE_MSG_MAGIC_V2: {
1027                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1028                 if (!pb) {
1029                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1030                         return 0;
1031                 }
1032                 return pb->pb_tag;
1033         }
1034         default:
1035                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1036                 return 0;
1037         }
1038 }
1039 EXPORT_SYMBOL(lustre_msg_get_tag);
1040
1041 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1042 {
1043         switch (msg->lm_magic) {
1044         case LUSTRE_MSG_MAGIC_V2: {
1045                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1046                 if (pb == NULL) {
1047                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1048                         return 0;
1049                 }
1050                 return pb->pb_last_committed;
1051         }
1052         default:
1053                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1054                 return 0;
1055         }
1056 }
1057 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1058
1059 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1060 {
1061         switch (msg->lm_magic) {
1062         case LUSTRE_MSG_MAGIC_V2: {
1063                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1064                 if (pb == NULL) {
1065                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1066                         return NULL;
1067                 }
1068                 return pb->pb_pre_versions;
1069         }
1070         default:
1071                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1072                 return NULL;
1073         }
1074 }
1075 EXPORT_SYMBOL(lustre_msg_get_versions);
1076
1077 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1078 {
1079         switch (msg->lm_magic) {
1080         case LUSTRE_MSG_MAGIC_V2: {
1081                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1082                 if (pb == NULL) {
1083                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1084                         return 0;
1085                 }
1086                 return pb->pb_transno;
1087         }
1088         default:
1089                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1090                 return 0;
1091         }
1092 }
1093 EXPORT_SYMBOL(lustre_msg_get_transno);
1094
1095 int lustre_msg_get_status(struct lustre_msg *msg)
1096 {
1097         switch (msg->lm_magic) {
1098         case LUSTRE_MSG_MAGIC_V2: {
1099                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1100                 if (pb != NULL)
1101                         return pb->pb_status;
1102                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1103         }
1104         /* no break */
1105         default:
1106                 /* status might be printed in debug code while message
1107                 * uninitialized */
1108                 return -EINVAL;
1109         }
1110 }
1111 EXPORT_SYMBOL(lustre_msg_get_status);
1112
1113 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1114 {
1115         switch (msg->lm_magic) {
1116         case LUSTRE_MSG_MAGIC_V2: {
1117                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1118                 if (pb == NULL) {
1119                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1120                         return -EINVAL;
1121                 }
1122                 return pb->pb_slv;
1123         }
1124         default:
1125                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1126                 return -EINVAL;
1127         }
1128 }
1129
1130
1131 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1132 {
1133         switch (msg->lm_magic) {
1134         case LUSTRE_MSG_MAGIC_V2: {
1135                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1136                 if (pb == NULL) {
1137                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1138                         return;
1139                 }
1140                 pb->pb_slv = slv;
1141                 return;
1142         }
1143         default:
1144                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1145                 return;
1146         }
1147 }
1148
1149 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1150 {
1151         switch (msg->lm_magic) {
1152         case LUSTRE_MSG_MAGIC_V2: {
1153                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1154                 if (pb == NULL) {
1155                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1156                         return -EINVAL;
1157                 }
1158                 return pb->pb_limit;
1159         }
1160         default:
1161                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1162                 return -EINVAL;
1163         }
1164 }
1165
1166
1167 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1168 {
1169         switch (msg->lm_magic) {
1170         case LUSTRE_MSG_MAGIC_V2: {
1171                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1172                 if (pb == NULL) {
1173                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1174                         return;
1175                 }
1176                 pb->pb_limit = limit;
1177                 return;
1178         }
1179         default:
1180                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1181                 return;
1182         }
1183 }
1184
1185 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1186 {
1187         switch (msg->lm_magic) {
1188         case LUSTRE_MSG_MAGIC_V2: {
1189                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1190                 if (pb == NULL) {
1191                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1192                         return 0;
1193                 }
1194                 return pb->pb_conn_cnt;
1195         }
1196         default:
1197                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1198                 return 0;
1199         }
1200 }
1201 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1202
1203 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1204 {
1205         switch (msg->lm_magic) {
1206         case LUSTRE_MSG_MAGIC_V2:
1207                 return msg->lm_magic;
1208         default:
1209                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1210                 return 0;
1211         }
1212 }
1213
1214 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1215 {
1216         switch (msg->lm_magic) {
1217         case LUSTRE_MSG_MAGIC_V2: {
1218                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1219                 if (pb == NULL) {
1220                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1221                         return 0;
1222                 }
1223                 return pb->pb_timeout;
1224         }
1225         default:
1226                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1227                 return 0;
1228         }
1229 }
1230
1231 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1232 {
1233         switch (msg->lm_magic) {
1234         case LUSTRE_MSG_MAGIC_V2: {
1235                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1236                 if (pb == NULL) {
1237                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1238                         return 0;
1239                 }
1240                 return pb->pb_service_time;
1241         }
1242         default:
1243                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1244                 return 0;
1245         }
1246 }
1247
1248 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1249 {
1250         switch (msg->lm_magic) {
1251         case LUSTRE_MSG_MAGIC_V2: {
1252                 struct ptlrpc_body *pb =
1253                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1254                                           sizeof(struct ptlrpc_body));
1255                 if (!pb)
1256                         return NULL;
1257
1258                 return pb->pb_jobid;
1259         }
1260         default:
1261                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1262                 return NULL;
1263         }
1264 }
1265 EXPORT_SYMBOL(lustre_msg_get_jobid);
1266
1267 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1268 {
1269         switch (msg->lm_magic) {
1270         case LUSTRE_MSG_MAGIC_V2:
1271                 return msg->lm_cksum;
1272         default:
1273                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1274                 return 0;
1275         }
1276 }
1277
1278 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1279 {
1280         switch (msg->lm_magic) {
1281         case LUSTRE_MSG_MAGIC_V2: {
1282                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1283                 if (pb == NULL) {
1284                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1285                         return 0;
1286                 }
1287                 return pb->pb_mbits;
1288         }
1289         default:
1290                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1291                 return 0;
1292         }
1293 }
1294
1295 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1296 {
1297         switch (msg->lm_magic) {
1298         case LUSTRE_MSG_MAGIC_V2: {
1299                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1300                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1301
1302                 unsigned int hsize = 4;
1303                 __u32 crc;
1304
1305                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1306                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1307                                        len, NULL, 0, (unsigned char *)&crc,
1308                                        &hsize);
1309                 return crc;
1310         }
1311         default:
1312                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1313                 return 0;
1314         }
1315 }
1316
1317 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1318 {
1319         switch (msg->lm_magic) {
1320         case LUSTRE_MSG_MAGIC_V2: {
1321                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1322                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1323                 pb->pb_handle = *handle;
1324                 return;
1325         }
1326         default:
1327                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1328         }
1329 }
1330
1331 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1332 {
1333         switch (msg->lm_magic) {
1334         case LUSTRE_MSG_MAGIC_V2: {
1335                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1336                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1337                 pb->pb_type = type;
1338                 return;
1339                 }
1340         default:
1341                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1342         }
1343 }
1344
1345 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1346 {
1347         switch (msg->lm_magic) {
1348         case LUSTRE_MSG_MAGIC_V2: {
1349                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1350                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1351                 pb->pb_opc = opc;
1352                 return;
1353         }
1354         default:
1355                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1356         }
1357 }
1358
1359 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1360 {
1361         switch (msg->lm_magic) {
1362         case LUSTRE_MSG_MAGIC_V2: {
1363                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1364                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1365                 pb->pb_last_xid = last_xid;
1366                 return;
1367         }
1368         default:
1369                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1370         }
1371 }
1372 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1373
1374 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1375 {
1376         switch (msg->lm_magic) {
1377         case LUSTRE_MSG_MAGIC_V2: {
1378                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1379                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1380                 pb->pb_tag = tag;
1381                 return;
1382         }
1383         default:
1384                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1385         }
1386 }
1387 EXPORT_SYMBOL(lustre_msg_set_tag);
1388
1389 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1390 {
1391         switch (msg->lm_magic) {
1392         case LUSTRE_MSG_MAGIC_V2: {
1393                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1394                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1395                 pb->pb_last_committed = last_committed;
1396                 return;
1397         }
1398         default:
1399                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1400         }
1401 }
1402
1403 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1404 {
1405         switch (msg->lm_magic) {
1406         case LUSTRE_MSG_MAGIC_V2: {
1407                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1408                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1409                 pb->pb_pre_versions[0] = versions[0];
1410                 pb->pb_pre_versions[1] = versions[1];
1411                 pb->pb_pre_versions[2] = versions[2];
1412                 pb->pb_pre_versions[3] = versions[3];
1413                 return;
1414         }
1415         default:
1416                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1417         }
1418 }
1419 EXPORT_SYMBOL(lustre_msg_set_versions);
1420
1421 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1422 {
1423         switch (msg->lm_magic) {
1424         case LUSTRE_MSG_MAGIC_V2: {
1425                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1426                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1427                 pb->pb_transno = transno;
1428                 return;
1429         }
1430         default:
1431                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1432         }
1433 }
1434 EXPORT_SYMBOL(lustre_msg_set_transno);
1435
1436 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1437 {
1438         switch (msg->lm_magic) {
1439         case LUSTRE_MSG_MAGIC_V2: {
1440                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1441                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1442                 pb->pb_status = status;
1443                 return;
1444         }
1445         default:
1446                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1447         }
1448 }
1449 EXPORT_SYMBOL(lustre_msg_set_status);
1450
1451 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1452 {
1453         switch (msg->lm_magic) {
1454         case LUSTRE_MSG_MAGIC_V2: {
1455                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1456                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1457                 pb->pb_conn_cnt = conn_cnt;
1458                 return;
1459         }
1460         default:
1461                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1462         }
1463 }
1464
1465 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1466 {
1467         switch (msg->lm_magic) {
1468         case LUSTRE_MSG_MAGIC_V2: {
1469                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1470                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1471                 pb->pb_timeout = timeout;
1472                 return;
1473         }
1474         default:
1475                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1476         }
1477 }
1478
1479 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1480 {
1481         switch (msg->lm_magic) {
1482         case LUSTRE_MSG_MAGIC_V2: {
1483                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1484                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1485                 pb->pb_service_time = service_time;
1486                 return;
1487         }
1488         default:
1489                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1490         }
1491 }
1492
1493 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1494 {
1495         switch (msg->lm_magic) {
1496         case LUSTRE_MSG_MAGIC_V2: {
1497                 __u32 opc = lustre_msg_get_opc(msg);
1498                 struct ptlrpc_body *pb;
1499
1500                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1501                  * See the comment in ptlrpc_request_pack(). */
1502                 if (!opc || opc == LDLM_BL_CALLBACK ||
1503                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1504                         return;
1505
1506                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1507                                        sizeof(struct ptlrpc_body));
1508                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1509
1510                 if (jobid != NULL)
1511                         memcpy(pb->pb_jobid, jobid, LUSTRE_JOBID_SIZE);
1512                 else if (pb->pb_jobid[0] == '\0')
1513                         lustre_get_jobid(pb->pb_jobid);
1514                 return;
1515         }
1516         default:
1517                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1518         }
1519 }
1520 EXPORT_SYMBOL(lustre_msg_set_jobid);
1521
1522 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1523 {
1524         switch (msg->lm_magic) {
1525         case LUSTRE_MSG_MAGIC_V2:
1526                 msg->lm_cksum = cksum;
1527                 return;
1528         default:
1529                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1530         }
1531 }
1532
1533 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1534 {
1535         switch (msg->lm_magic) {
1536         case LUSTRE_MSG_MAGIC_V2: {
1537                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1538
1539                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1540                 pb->pb_mbits = mbits;
1541                 return;
1542         }
1543         default:
1544                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1545         }
1546 }
1547
1548 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1549 {
1550         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1551
1552         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1553                                          req->rq_pill.rc_area[RCL_SERVER]);
1554         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1555                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1556 }
1557 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1558
1559 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1560 {
1561         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1562         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1563                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1564 }
1565
1566 /**
1567  * Send a remote set_info_async.
1568  *
1569  * This may go from client to server or server to client.
1570  */
1571 int do_set_info_async(struct obd_import *imp,
1572                       int opcode, int version,
1573                       size_t keylen, void *key,
1574                       size_t vallen, void *val,
1575                       struct ptlrpc_request_set *set)
1576 {
1577         struct ptlrpc_request *req;
1578         char                  *tmp;
1579         int                    rc;
1580         ENTRY;
1581
1582         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1583         if (req == NULL)
1584                 RETURN(-ENOMEM);
1585
1586         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1587                              RCL_CLIENT, keylen);
1588         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1589                              RCL_CLIENT, vallen);
1590         rc = ptlrpc_request_pack(req, version, opcode);
1591         if (rc) {
1592                 ptlrpc_request_free(req);
1593                 RETURN(rc);
1594         }
1595
1596         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1597         memcpy(tmp, key, keylen);
1598         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1599         memcpy(tmp, val, vallen);
1600
1601         ptlrpc_request_set_replen(req);
1602
1603         if (set) {
1604                 ptlrpc_set_add_req(set, req);
1605                 ptlrpc_check_set(NULL, set);
1606         } else {
1607                 rc = ptlrpc_queue_wait(req);
1608                 ptlrpc_req_finished(req);
1609         }
1610
1611         RETURN(rc);
1612 }
1613 EXPORT_SYMBOL(do_set_info_async);
1614
1615 /* byte flipping routines for all wire types declared in
1616  * lustre_idl.h implemented here.
1617  */
1618 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1619 {
1620         __swab32s (&b->pb_type);
1621         __swab32s (&b->pb_version);
1622         __swab32s (&b->pb_opc);
1623         __swab32s (&b->pb_status);
1624         __swab64s (&b->pb_last_xid);
1625         __swab16s (&b->pb_tag);
1626         __swab64s (&b->pb_last_committed);
1627         __swab64s (&b->pb_transno);
1628         __swab32s (&b->pb_flags);
1629         __swab32s (&b->pb_op_flags);
1630         __swab32s (&b->pb_conn_cnt);
1631         __swab32s (&b->pb_timeout);
1632         __swab32s (&b->pb_service_time);
1633         __swab32s (&b->pb_limit);
1634         __swab64s (&b->pb_slv);
1635         __swab64s (&b->pb_pre_versions[0]);
1636         __swab64s (&b->pb_pre_versions[1]);
1637         __swab64s (&b->pb_pre_versions[2]);
1638         __swab64s (&b->pb_pre_versions[3]);
1639         __swab64s(&b->pb_mbits);
1640         CLASSERT(offsetof(typeof(*b), pb_padding0) != 0);
1641         CLASSERT(offsetof(typeof(*b), pb_padding1) != 0);
1642         CLASSERT(offsetof(typeof(*b), pb_padding64_0) != 0);
1643         CLASSERT(offsetof(typeof(*b), pb_padding64_1) != 0);
1644         CLASSERT(offsetof(typeof(*b), pb_padding64_2) != 0);
1645         /* While we need to maintain compatibility between
1646          * clients and servers without ptlrpc_body_v2 (< 2.3)
1647          * do not swab any fields beyond pb_jobid, as we are
1648          * using this swab function for both ptlrpc_body
1649          * and ptlrpc_body_v2. */
1650         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1651 }
1652
1653 void lustre_swab_connect(struct obd_connect_data *ocd)
1654 {
1655         __swab64s(&ocd->ocd_connect_flags);
1656         __swab32s(&ocd->ocd_version);
1657         __swab32s(&ocd->ocd_grant);
1658         __swab64s(&ocd->ocd_ibits_known);
1659         __swab32s(&ocd->ocd_index);
1660         __swab32s(&ocd->ocd_brw_size);
1661         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1662          * they are 8-byte values */
1663         __swab16s(&ocd->ocd_grant_tax_kb);
1664         __swab32s(&ocd->ocd_grant_max_blks);
1665         __swab64s(&ocd->ocd_transno);
1666         __swab32s(&ocd->ocd_group);
1667         __swab32s(&ocd->ocd_cksum_types);
1668         __swab32s(&ocd->ocd_instance);
1669         /* Fields after ocd_cksum_types are only accessible by the receiver
1670          * if the corresponding flag in ocd_connect_flags is set. Accessing
1671          * any field after ocd_maxbytes on the receiver without a valid flag
1672          * may result in out-of-bound memory access and kernel oops. */
1673         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1674                 __swab32s(&ocd->ocd_max_easize);
1675         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1676                 __swab64s(&ocd->ocd_maxbytes);
1677         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1678                 __swab16s(&ocd->ocd_maxmodrpcs);
1679         CLASSERT(offsetof(typeof(*ocd), padding0) != 0);
1680         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1681         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1682                 __swab64s(&ocd->ocd_connect_flags2);
1683         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1684         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1685         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1686         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1687         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1688         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1689         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1690         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1691         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1692         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1693         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1694         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1695         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1696 }
1697
1698 void lustre_swab_obdo (struct obdo  *o)
1699 {
1700         __swab64s (&o->o_valid);
1701         lustre_swab_ost_id(&o->o_oi);
1702         __swab64s (&o->o_parent_seq);
1703         __swab64s (&o->o_size);
1704         __swab64s (&o->o_mtime);
1705         __swab64s (&o->o_atime);
1706         __swab64s (&o->o_ctime);
1707         __swab64s (&o->o_blocks);
1708         __swab64s (&o->o_grant);
1709         __swab32s (&o->o_blksize);
1710         __swab32s (&o->o_mode);
1711         __swab32s (&o->o_uid);
1712         __swab32s (&o->o_gid);
1713         __swab32s (&o->o_flags);
1714         __swab32s (&o->o_nlink);
1715         __swab32s (&o->o_parent_oid);
1716         __swab32s (&o->o_misc);
1717         __swab64s (&o->o_ioepoch);
1718         __swab32s (&o->o_stripe_idx);
1719         __swab32s (&o->o_parent_ver);
1720         /* o_handle is opaque */
1721         /* o_lcookie is swabbed elsewhere */
1722         __swab32s (&o->o_uid_h);
1723         __swab32s (&o->o_gid_h);
1724         __swab64s (&o->o_data_version);
1725         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1726         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1727         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1728
1729 }
1730 EXPORT_SYMBOL(lustre_swab_obdo);
1731
1732 void lustre_swab_obd_statfs (struct obd_statfs *os)
1733 {
1734         __swab64s (&os->os_type);
1735         __swab64s (&os->os_blocks);
1736         __swab64s (&os->os_bfree);
1737         __swab64s (&os->os_bavail);
1738         __swab64s (&os->os_files);
1739         __swab64s (&os->os_ffree);
1740         /* no need to swab os_fsid */
1741         __swab32s (&os->os_bsize);
1742         __swab32s (&os->os_namelen);
1743         __swab64s (&os->os_maxbytes);
1744         __swab32s (&os->os_state);
1745         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1746         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1747         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1748         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1749         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1750         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1751         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1752         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1753         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1754 }
1755
1756 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1757 {
1758         lustre_swab_ost_id(&ioo->ioo_oid);
1759         __swab32s(&ioo->ioo_max_brw);
1760         __swab32s(&ioo->ioo_bufcnt);
1761 }
1762
1763 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1764 {
1765         __swab64s(&nbr->rnb_offset);
1766         __swab32s(&nbr->rnb_len);
1767         __swab32s(&nbr->rnb_flags);
1768 }
1769
1770 void lustre_swab_ost_body (struct ost_body *b)
1771 {
1772         lustre_swab_obdo (&b->oa);
1773 }
1774
1775 void lustre_swab_ost_last_id(u64 *id)
1776 {
1777         __swab64s(id);
1778 }
1779
1780 void lustre_swab_generic_32s(__u32 *val)
1781 {
1782         __swab32s(val);
1783 }
1784
1785 void lustre_swab_gl_desc(union ldlm_gl_desc *desc)
1786 {
1787         lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid);
1788         __swab64s(&desc->lquota_desc.gl_flags);
1789         __swab64s(&desc->lquota_desc.gl_ver);
1790         __swab64s(&desc->lquota_desc.gl_hardlimit);
1791         __swab64s(&desc->lquota_desc.gl_softlimit);
1792         __swab64s(&desc->lquota_desc.gl_time);
1793         CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0);
1794 }
1795
1796 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1797 {
1798         __swab64s(&lvb->lvb_size);
1799         __swab64s(&lvb->lvb_mtime);
1800         __swab64s(&lvb->lvb_atime);
1801         __swab64s(&lvb->lvb_ctime);
1802         __swab64s(&lvb->lvb_blocks);
1803 }
1804 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1805
1806 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1807 {
1808         __swab64s(&lvb->lvb_size);
1809         __swab64s(&lvb->lvb_mtime);
1810         __swab64s(&lvb->lvb_atime);
1811         __swab64s(&lvb->lvb_ctime);
1812         __swab64s(&lvb->lvb_blocks);
1813         __swab32s(&lvb->lvb_mtime_ns);
1814         __swab32s(&lvb->lvb_atime_ns);
1815         __swab32s(&lvb->lvb_ctime_ns);
1816         __swab32s(&lvb->lvb_padding);
1817 }
1818 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1819
1820 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1821 {
1822         __swab64s(&lvb->lvb_flags);
1823         __swab64s(&lvb->lvb_id_may_rel);
1824         __swab64s(&lvb->lvb_id_rel);
1825         __swab64s(&lvb->lvb_id_qunit);
1826         __swab64s(&lvb->lvb_pad1);
1827 }
1828 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1829
1830 void lustre_swab_mdt_body (struct mdt_body *b)
1831 {
1832         lustre_swab_lu_fid(&b->mbo_fid1);
1833         lustre_swab_lu_fid(&b->mbo_fid2);
1834         /* handle is opaque */
1835         __swab64s(&b->mbo_valid);
1836         __swab64s(&b->mbo_size);
1837         __swab64s(&b->mbo_mtime);
1838         __swab64s(&b->mbo_atime);
1839         __swab64s(&b->mbo_ctime);
1840         __swab64s(&b->mbo_blocks);
1841         __swab64s(&b->mbo_ioepoch);
1842         __swab64s(&b->mbo_t_state);
1843         __swab32s(&b->mbo_fsuid);
1844         __swab32s(&b->mbo_fsgid);
1845         __swab32s(&b->mbo_capability);
1846         __swab32s(&b->mbo_mode);
1847         __swab32s(&b->mbo_uid);
1848         __swab32s(&b->mbo_gid);
1849         __swab32s(&b->mbo_flags);
1850         __swab32s(&b->mbo_rdev);
1851         __swab32s(&b->mbo_nlink);
1852         CLASSERT(offsetof(typeof(*b), mbo_unused2) != 0);
1853         __swab32s(&b->mbo_suppgid);
1854         __swab32s(&b->mbo_eadatasize);
1855         __swab32s(&b->mbo_aclsize);
1856         __swab32s(&b->mbo_max_mdsize);
1857         CLASSERT(offsetof(typeof(*b), mbo_unused3) != 0);
1858         __swab32s(&b->mbo_uid_h);
1859         __swab32s(&b->mbo_gid_h);
1860         CLASSERT(offsetof(typeof(*b), mbo_padding_5) != 0);
1861 }
1862
1863 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1864 {
1865         /* mio_handle is opaque */
1866         CLASSERT(offsetof(typeof(*b), mio_unused1) != 0);
1867         CLASSERT(offsetof(typeof(*b), mio_unused2) != 0);
1868         CLASSERT(offsetof(typeof(*b), mio_padding) != 0);
1869 }
1870
1871 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1872 {
1873         int i;
1874         __swab32s(&mti->mti_lustre_ver);
1875         __swab32s(&mti->mti_stripe_index);
1876         __swab32s(&mti->mti_config_ver);
1877         __swab32s(&mti->mti_flags);
1878         __swab32s(&mti->mti_instance);
1879         __swab32s(&mti->mti_nid_count);
1880         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1881         for (i = 0; i < MTI_NIDS_MAX; i++)
1882                 __swab64s(&mti->mti_nids[i]);
1883 }
1884
1885 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1886 {
1887         __u8 i;
1888
1889         __swab64s(&entry->mne_version);
1890         __swab32s(&entry->mne_instance);
1891         __swab32s(&entry->mne_index);
1892         __swab32s(&entry->mne_length);
1893
1894         /* mne_nid_(count|type) must be one byte size because we're gonna
1895          * access it w/o swapping. */
1896         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1897         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1898
1899         /* remove this assertion if ipv6 is supported. */
1900         LASSERT(entry->mne_nid_type == 0);
1901         for (i = 0; i < entry->mne_nid_count; i++) {
1902                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1903                 __swab64s(&entry->u.nids[i]);
1904         }
1905 }
1906 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1907
1908 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1909 {
1910         __swab64s(&body->mcb_offset);
1911         __swab32s(&body->mcb_units);
1912         __swab16s(&body->mcb_type);
1913 }
1914
1915 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1916 {
1917         __swab64s(&body->mcr_offset);
1918         __swab64s(&body->mcr_size);
1919 }
1920
1921 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1922 {
1923         __swab64s (&i->dqi_bgrace);
1924         __swab64s (&i->dqi_igrace);
1925         __swab32s (&i->dqi_flags);
1926         __swab32s (&i->dqi_valid);
1927 }
1928
1929 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1930 {
1931         __swab64s (&b->dqb_ihardlimit);
1932         __swab64s (&b->dqb_isoftlimit);
1933         __swab64s (&b->dqb_curinodes);
1934         __swab64s (&b->dqb_bhardlimit);
1935         __swab64s (&b->dqb_bsoftlimit);
1936         __swab64s (&b->dqb_curspace);
1937         __swab64s (&b->dqb_btime);
1938         __swab64s (&b->dqb_itime);
1939         __swab32s (&b->dqb_valid);
1940         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1941 }
1942
1943 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1944 {
1945         __swab32s (&q->qc_cmd);
1946         __swab32s (&q->qc_type);
1947         __swab32s (&q->qc_id);
1948         __swab32s (&q->qc_stat);
1949         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1950         lustre_swab_obd_dqblk (&q->qc_dqblk);
1951 }
1952
1953 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
1954 {
1955         lustre_swab_lu_fid(&gf->gf_fid);
1956         __swab64s(&gf->gf_recno);
1957         __swab32s(&gf->gf_linkno);
1958         __swab32s(&gf->gf_pathlen);
1959 }
1960 EXPORT_SYMBOL(lustre_swab_fid2path);
1961
1962 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
1963 {
1964         __swab64s(&fm_extent->fe_logical);
1965         __swab64s(&fm_extent->fe_physical);
1966         __swab64s(&fm_extent->fe_length);
1967         __swab32s(&fm_extent->fe_flags);
1968         __swab32s(&fm_extent->fe_device);
1969 }
1970
1971 void lustre_swab_fiemap(struct fiemap *fiemap)
1972 {
1973         __u32 i;
1974
1975         __swab64s(&fiemap->fm_start);
1976         __swab64s(&fiemap->fm_length);
1977         __swab32s(&fiemap->fm_flags);
1978         __swab32s(&fiemap->fm_mapped_extents);
1979         __swab32s(&fiemap->fm_extent_count);
1980         __swab32s(&fiemap->fm_reserved);
1981
1982         for (i = 0; i < fiemap->fm_mapped_extents; i++)
1983                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
1984 }
1985
1986 void lustre_swab_idx_info(struct idx_info *ii)
1987 {
1988         __swab32s(&ii->ii_magic);
1989         __swab32s(&ii->ii_flags);
1990         __swab16s(&ii->ii_count);
1991         __swab32s(&ii->ii_attrs);
1992         lustre_swab_lu_fid(&ii->ii_fid);
1993         __swab64s(&ii->ii_version);
1994         __swab64s(&ii->ii_hash_start);
1995         __swab64s(&ii->ii_hash_end);
1996         __swab16s(&ii->ii_keysize);
1997         __swab16s(&ii->ii_recsize);
1998 }
1999
2000 void lustre_swab_lip_header(struct lu_idxpage *lip)
2001 {
2002         /* swab header */
2003         __swab32s(&lip->lip_magic);
2004         __swab16s(&lip->lip_flags);
2005         __swab16s(&lip->lip_nr);
2006 }
2007 EXPORT_SYMBOL(lustre_swab_lip_header);
2008
2009 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2010 {
2011         __swab32s(&rr->rr_opcode);
2012         __swab32s(&rr->rr_cap);
2013         __swab32s(&rr->rr_fsuid);
2014         /* rr_fsuid_h is unused */
2015         __swab32s(&rr->rr_fsgid);
2016         /* rr_fsgid_h is unused */
2017         __swab32s(&rr->rr_suppgid1);
2018         /* rr_suppgid1_h is unused */
2019         __swab32s(&rr->rr_suppgid2);
2020         /* rr_suppgid2_h is unused */
2021         lustre_swab_lu_fid(&rr->rr_fid1);
2022         lustre_swab_lu_fid(&rr->rr_fid2);
2023         __swab64s(&rr->rr_mtime);
2024         __swab64s(&rr->rr_atime);
2025         __swab64s(&rr->rr_ctime);
2026         __swab64s(&rr->rr_size);
2027         __swab64s(&rr->rr_blocks);
2028         __swab32s(&rr->rr_bias);
2029         __swab32s(&rr->rr_mode);
2030         __swab32s(&rr->rr_flags);
2031         __swab32s(&rr->rr_flags_h);
2032         __swab32s(&rr->rr_umask);
2033
2034         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2035 };
2036
2037 void lustre_swab_lov_desc (struct lov_desc *ld)
2038 {
2039         __swab32s (&ld->ld_tgt_count);
2040         __swab32s (&ld->ld_active_tgt_count);
2041         __swab32s (&ld->ld_default_stripe_count);
2042         __swab32s (&ld->ld_pattern);
2043         __swab64s (&ld->ld_default_stripe_size);
2044         __swab64s (&ld->ld_default_stripe_offset);
2045         __swab32s (&ld->ld_qos_maxage);
2046         /* uuid endian insensitive */
2047 }
2048 EXPORT_SYMBOL(lustre_swab_lov_desc);
2049
2050 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2051 {
2052         __swab32s (&ld->ld_tgt_count);
2053         __swab32s (&ld->ld_active_tgt_count);
2054         __swab32s (&ld->ld_default_stripe_count);
2055         __swab32s (&ld->ld_pattern);
2056         __swab64s (&ld->ld_default_hash_size);
2057         __swab32s (&ld->ld_qos_maxage);
2058         /* uuid endian insensitive */
2059 }
2060
2061 /* This structure is always in little-endian */
2062 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2063 {
2064         int i;
2065
2066         __swab32s(&lmm1->lmv_magic);
2067         __swab32s(&lmm1->lmv_stripe_count);
2068         __swab32s(&lmm1->lmv_master_mdt_index);
2069         __swab32s(&lmm1->lmv_hash_type);
2070         __swab32s(&lmm1->lmv_layout_version);
2071         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2072                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2073 }
2074
2075 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2076 {
2077         switch (lmm->lmv_magic) {
2078         case LMV_MAGIC_V1:
2079                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2080                 break;
2081         default:
2082                 break;
2083         }
2084 }
2085 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2086
2087 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2088 {
2089         __swab32s(&lum->lum_magic);
2090         __swab32s(&lum->lum_stripe_count);
2091         __swab32s(&lum->lum_stripe_offset);
2092         __swab32s(&lum->lum_hash_type);
2093         __swab32s(&lum->lum_type);
2094         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2095 }
2096 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2097
2098 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2099                           const char *msg)
2100 {
2101         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2102                 return;
2103
2104         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2105         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2106         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2107         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2108         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2109         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2110         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2111         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2112                lum->lmm_stripe_offset);
2113         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2114                 struct lov_user_md_v3 *v3 = (void *)lum;
2115                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2116         }
2117         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2118                 struct lov_user_md_v3 *v3 = (void *)lum;
2119                 int i;
2120
2121                 if (v3->lmm_pool_name[0] != '\0')
2122                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2123
2124                 CDEBUG(lvl, "\ttarget list:\n");
2125                 for (i = 0; i < v3->lmm_stripe_count; i++)
2126                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2127         }
2128 }
2129 EXPORT_SYMBOL(lustre_print_user_md);
2130
2131 static void lustre_swab_lmm_oi(struct ost_id *oi)
2132 {
2133         __swab64s(&oi->oi.oi_id);
2134         __swab64s(&oi->oi.oi_seq);
2135 }
2136
2137 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2138 {
2139         ENTRY;
2140         __swab32s(&lum->lmm_magic);
2141         __swab32s(&lum->lmm_pattern);
2142         lustre_swab_lmm_oi(&lum->lmm_oi);
2143         __swab32s(&lum->lmm_stripe_size);
2144         __swab16s(&lum->lmm_stripe_count);
2145         __swab16s(&lum->lmm_stripe_offset);
2146         EXIT;
2147 }
2148
2149 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2150 {
2151         ENTRY;
2152         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2153         lustre_swab_lov_user_md_common(lum);
2154         EXIT;
2155 }
2156 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2157
2158 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2159 {
2160         ENTRY;
2161         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2162         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2163         /* lmm_pool_name nothing to do with char */
2164         EXIT;
2165 }
2166 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2167
2168 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2169 {
2170         ENTRY;
2171         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2172         __swab32s(&lmm->lmm_magic);
2173         __swab32s(&lmm->lmm_pattern);
2174         lustre_swab_lmm_oi(&lmm->lmm_oi);
2175         __swab32s(&lmm->lmm_stripe_size);
2176         __swab16s(&lmm->lmm_stripe_count);
2177         __swab16s(&lmm->lmm_layout_gen);
2178         EXIT;
2179 }
2180 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2181
2182 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2183                                      int stripe_count)
2184 {
2185         int i;
2186         ENTRY;
2187         for (i = 0; i < stripe_count; i++) {
2188                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2189                 __swab32s(&(lod[i].l_ost_gen));
2190                 __swab32s(&(lod[i].l_ost_idx));
2191         }
2192         EXIT;
2193 }
2194 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2195
2196 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2197 {
2198         int  i;
2199
2200         for (i = 0; i < RES_NAME_SIZE; i++)
2201                 __swab64s (&id->name[i]);
2202 }
2203
2204 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2205 {
2206         /* the lock data is a union and the first two fields are always an
2207          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2208          * data the same way. */
2209         __swab64s(&d->l_extent.start);
2210         __swab64s(&d->l_extent.end);
2211         __swab64s(&d->l_extent.gid);
2212         __swab64s(&d->l_flock.lfw_owner);
2213         __swab32s(&d->l_flock.lfw_pid);
2214 }
2215
2216 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2217 {
2218         __swab64s(&i->opc);
2219 }
2220
2221 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2222 {
2223         __swab32s(&r->lr_type);
2224         CLASSERT(offsetof(typeof(*r), lr_pad) != 0);
2225         lustre_swab_ldlm_res_id(&r->lr_name);
2226 }
2227
2228 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2229 {
2230         lustre_swab_ldlm_resource_desc (&l->l_resource);
2231         __swab32s (&l->l_req_mode);
2232         __swab32s (&l->l_granted_mode);
2233         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2234 }
2235
2236 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2237 {
2238         __swab32s (&rq->lock_flags);
2239         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2240         __swab32s (&rq->lock_count);
2241         /* lock_handle[] opaque */
2242 }
2243
2244 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2245 {
2246         __swab32s (&r->lock_flags);
2247         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2248         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2249         /* lock_handle opaque */
2250         __swab64s (&r->lock_policy_res1);
2251         __swab64s (&r->lock_policy_res2);
2252 }
2253
2254 void lustre_swab_quota_body(struct quota_body *b)
2255 {
2256         lustre_swab_lu_fid(&b->qb_fid);
2257         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2258         __swab32s(&b->qb_flags);
2259         __swab64s(&b->qb_count);
2260         __swab64s(&b->qb_usage);
2261         __swab64s(&b->qb_slv_ver);
2262 }
2263
2264 /* Dump functions */
2265 void dump_ioo(struct obd_ioobj *ioo)
2266 {
2267         CDEBUG(D_RPCTRACE,
2268                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2269                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2270                ioo->ioo_bufcnt);
2271 }
2272
2273 void dump_rniobuf(struct niobuf_remote *nb)
2274 {
2275         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2276                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2277 }
2278
2279 void dump_obdo(struct obdo *oa)
2280 {
2281         u64 valid = oa->o_valid;
2282
2283         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2284         if (valid & OBD_MD_FLID)
2285                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2286         if (valid & OBD_MD_FLFID)
2287                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2288                        oa->o_parent_seq);
2289         if (valid & OBD_MD_FLSIZE)
2290                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2291         if (valid & OBD_MD_FLMTIME)
2292                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2293         if (valid & OBD_MD_FLATIME)
2294                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2295         if (valid & OBD_MD_FLCTIME)
2296                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2297         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2298                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2299         if (valid & OBD_MD_FLGRANT)
2300                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2301         if (valid & OBD_MD_FLBLKSZ)
2302                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2303         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2304                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2305                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2306                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2307         if (valid & OBD_MD_FLUID)
2308                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2309         if (valid & OBD_MD_FLUID)
2310                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2311         if (valid & OBD_MD_FLGID)
2312                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2313         if (valid & OBD_MD_FLGID)
2314                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2315         if (valid & OBD_MD_FLFLAGS)
2316                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2317         if (valid & OBD_MD_FLNLINK)
2318                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2319         else if (valid & OBD_MD_FLCKSUM)
2320                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2321                        oa->o_nlink);
2322         if (valid & OBD_MD_FLGENER)
2323                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2324                        oa->o_parent_oid);
2325         if (valid & OBD_MD_FLEPOCH)
2326                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = %lld\n",
2327                        oa->o_ioepoch);
2328         if (valid & OBD_MD_FLFID) {
2329                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2330                        oa->o_stripe_idx);
2331                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2332                        oa->o_parent_ver);
2333         }
2334         if (valid & OBD_MD_FLHANDLE)
2335                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2336                        oa->o_handle.cookie);
2337 }
2338
2339 void dump_ost_body(struct ost_body *ob)
2340 {
2341         dump_obdo(&ob->oa);
2342 }
2343
2344 void dump_rcs(__u32 *rc)
2345 {
2346         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2347 }
2348
2349 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2350 {
2351         LASSERT(req->rq_reqmsg);
2352
2353         switch (req->rq_reqmsg->lm_magic) {
2354         case LUSTRE_MSG_MAGIC_V2:
2355                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2356         default:
2357                 CERROR("bad lustre msg magic: %#08X\n",
2358                        req->rq_reqmsg->lm_magic);
2359         }
2360         return 0;
2361 }
2362
2363 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2364 {
2365         LASSERT(req->rq_repmsg);
2366
2367         switch (req->rq_repmsg->lm_magic) {
2368         case LUSTRE_MSG_MAGIC_V2:
2369                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2370         default:
2371                 /* uninitialized yet */
2372                 return 0;
2373         }
2374 }
2375
2376 void _debug_req(struct ptlrpc_request *req,
2377                 struct libcfs_debug_msg_data *msgdata,
2378                 const char *fmt, ... )
2379 {
2380         int req_ok = req->rq_reqmsg != NULL;
2381         int rep_ok = req->rq_repmsg != NULL;
2382         lnet_nid_t nid = LNET_NID_ANY;
2383         va_list args;
2384
2385         if (ptlrpc_req_need_swab(req)) {
2386                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2387                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2388         }
2389
2390         if (req->rq_import && req->rq_import->imp_connection)
2391                 nid = req->rq_import->imp_connection->c_peer.nid;
2392         else if (req->rq_export && req->rq_export->exp_connection)
2393                 nid = req->rq_export->exp_connection->c_peer.nid;
2394
2395         va_start(args, fmt);
2396         libcfs_debug_vmsg2(msgdata, fmt, args,
2397                            " req@%p x%llu/t%lld(%lld) o%d->%s@%s:%d/%d"
2398                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2399                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2400                            req, req->rq_xid, req->rq_transno,
2401                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2402                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2403                            req->rq_import ?
2404                                 req->rq_import->imp_obd->obd_name :
2405                                 req->rq_export ?
2406                                         req->rq_export->exp_client_uuid.uuid :
2407                                         "<?>",
2408                            libcfs_nid2str(nid),
2409                            req->rq_request_portal, req->rq_reply_portal,
2410                            req->rq_reqlen, req->rq_replen,
2411                            req->rq_early_count, req->rq_timedout,
2412                            req->rq_deadline,
2413                            atomic_read(&req->rq_refcount),
2414                            DEBUG_REQ_FLAGS(req),
2415                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2416                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2417                            req->rq_status,
2418                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2419         va_end(args);
2420 }
2421 EXPORT_SYMBOL(_debug_req);
2422
2423 void lustre_swab_lustre_capa(struct lustre_capa *c)
2424 {
2425         lustre_swab_lu_fid(&c->lc_fid);
2426         __swab64s (&c->lc_opc);
2427         __swab64s (&c->lc_uid);
2428         __swab64s (&c->lc_gid);
2429         __swab32s (&c->lc_flags);
2430         __swab32s (&c->lc_keyid);
2431         __swab32s (&c->lc_timeout);
2432         __swab32s (&c->lc_expiry);
2433 }
2434
2435 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2436 {
2437         __swab64s (&k->lk_seq);
2438         __swab32s (&k->lk_keyid);
2439         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2440 }
2441
2442 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2443 {
2444         __swab32s(&state->hus_states);
2445         __swab32s(&state->hus_archive_id);
2446 }
2447
2448 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2449 {
2450         __swab32s(&hss->hss_valid);
2451         __swab64s(&hss->hss_setmask);
2452         __swab64s(&hss->hss_clearmask);
2453         __swab32s(&hss->hss_archive_id);
2454 }
2455
2456 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2457 {
2458         __swab64s(&extent->offset);
2459         __swab64s(&extent->length);
2460 }
2461
2462 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2463 {
2464         __swab32s(&action->hca_state);
2465         __swab32s(&action->hca_action);
2466         lustre_swab_hsm_extent(&action->hca_location);
2467 }
2468
2469 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2470 {
2471         lustre_swab_lu_fid(&hui->hui_fid);
2472         lustre_swab_hsm_extent(&hui->hui_extent);
2473 }
2474
2475 void lustre_swab_layout_intent(struct layout_intent *li)
2476 {
2477         __swab32s(&li->li_opc);
2478         __swab32s(&li->li_flags);
2479         __swab64s(&li->li_start);
2480         __swab64s(&li->li_end);
2481 }
2482
2483 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2484 {
2485         lustre_swab_lu_fid(&hpk->hpk_fid);
2486         __swab64s(&hpk->hpk_cookie);
2487         __swab64s(&hpk->hpk_extent.offset);
2488         __swab64s(&hpk->hpk_extent.length);
2489         __swab16s(&hpk->hpk_flags);
2490         __swab16s(&hpk->hpk_errval);
2491 }
2492
2493 void lustre_swab_hsm_request(struct hsm_request *hr)
2494 {
2495         __swab32s(&hr->hr_action);
2496         __swab32s(&hr->hr_archive_id);
2497         __swab64s(&hr->hr_flags);
2498         __swab32s(&hr->hr_itemcount);
2499         __swab32s(&hr->hr_data_len);
2500 }
2501
2502 void lustre_swab_object_update(struct object_update *ou)
2503 {
2504         struct object_update_param *param;
2505         size_t  i;
2506
2507         __swab16s(&ou->ou_type);
2508         __swab16s(&ou->ou_params_count);
2509         __swab32s(&ou->ou_result_size);
2510         __swab32s(&ou->ou_flags);
2511         __swab32s(&ou->ou_padding1);
2512         __swab64s(&ou->ou_batchid);
2513         lustre_swab_lu_fid(&ou->ou_fid);
2514         param = &ou->ou_params[0];
2515         for (i = 0; i < ou->ou_params_count; i++) {
2516                 __swab16s(&param->oup_len);
2517                 __swab16s(&param->oup_padding);
2518                 __swab32s(&param->oup_padding2);
2519                 param = (struct object_update_param *)((char *)param +
2520                          object_update_param_size(param));
2521         }
2522 }
2523
2524 void lustre_swab_object_update_request(struct object_update_request *our)
2525 {
2526         size_t i;
2527         __swab32s(&our->ourq_magic);
2528         __swab16s(&our->ourq_count);
2529         __swab16s(&our->ourq_padding);
2530         for (i = 0; i < our->ourq_count; i++) {
2531                 struct object_update *ou;
2532
2533                 ou = object_update_request_get(our, i, NULL);
2534                 if (ou == NULL)
2535                         return;
2536                 lustre_swab_object_update(ou);
2537         }
2538 }
2539
2540 void lustre_swab_object_update_result(struct object_update_result *our)
2541 {
2542         __swab32s(&our->our_rc);
2543         __swab16s(&our->our_datalen);
2544         __swab16s(&our->our_padding);
2545 }
2546
2547 void lustre_swab_object_update_reply(struct object_update_reply *our)
2548 {
2549         size_t i;
2550
2551         __swab32s(&our->ourp_magic);
2552         __swab16s(&our->ourp_count);
2553         __swab16s(&our->ourp_padding);
2554         for (i = 0; i < our->ourp_count; i++) {
2555                 struct object_update_result *ourp;
2556
2557                 __swab16s(&our->ourp_lens[i]);
2558                 ourp = object_update_result_get(our, i, NULL);
2559                 if (ourp == NULL)
2560                         return;
2561                 lustre_swab_object_update_result(ourp);
2562         }
2563 }
2564
2565 void lustre_swab_out_update_header(struct out_update_header *ouh)
2566 {
2567         __swab32s(&ouh->ouh_magic);
2568         __swab32s(&ouh->ouh_count);
2569         __swab32s(&ouh->ouh_inline_length);
2570         __swab32s(&ouh->ouh_reply_size);
2571 }
2572 EXPORT_SYMBOL(lustre_swab_out_update_header);
2573
2574 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2575 {
2576         __swab32s(&oub->oub_size);
2577         __swab32s(&oub->oub_padding);
2578 }
2579 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2580
2581 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2582 {
2583         __swab64s(&msl->msl_flags);
2584 }
2585
2586 void lustre_swab_close_data(struct close_data *cd)
2587 {
2588         lustre_swab_lu_fid(&cd->cd_fid);
2589         __swab64s(&cd->cd_data_version);
2590 }
2591
2592 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2593 {
2594         __swab32s(&lr->lr_event);
2595         __swab32s(&lr->lr_index);
2596         __swab32s(&lr->lr_flags);
2597         __swab32s(&lr->lr_valid);
2598         __swab32s(&lr->lr_speed);
2599         __swab16s(&lr->lr_version);
2600         __swab16s(&lr->lr_active);
2601         __swab16s(&lr->lr_param);
2602         __swab16s(&lr->lr_async_windows);
2603         __swab32s(&lr->lr_flags);
2604         lustre_swab_lu_fid(&lr->lr_fid);
2605         lustre_swab_lu_fid(&lr->lr_fid2);
2606         lustre_swab_lu_fid(&lr->lr_fid3);
2607         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2608         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2609 }
2610
2611 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2612 {
2613         __swab32s(&lr->lr_status);
2614         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2615         __swab64s(&lr->lr_repaired);
2616 }
2617
2618 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2619 {
2620         lustre_swab_lu_fid(&ent->loe_key);
2621         lustre_swab_lu_fid(&ent->loe_rec.lor_fid);
2622         __swab32s(&ent->loe_rec.lor_uid);
2623         __swab32s(&ent->loe_rec.lor_gid);
2624 }
2625 EXPORT_SYMBOL(lustre_swab_orphan_ent);
2626
2627 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
2628 {
2629         __swab16s(&ladvise->lla_advice);
2630         __swab16s(&ladvise->lla_value1);
2631         __swab32s(&ladvise->lla_value2);
2632         __swab64s(&ladvise->lla_start);
2633         __swab64s(&ladvise->lla_end);
2634         __swab32s(&ladvise->lla_value3);
2635         __swab32s(&ladvise->lla_value4);
2636 }
2637 EXPORT_SYMBOL(lustre_swab_ladvise);
2638
2639 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
2640 {
2641         __swab32s(&ladvise_hdr->lah_magic);
2642         __swab32s(&ladvise_hdr->lah_count);
2643         __swab64s(&ladvise_hdr->lah_flags);
2644         __swab32s(&ladvise_hdr->lah_value1);
2645         __swab32s(&ladvise_hdr->lah_value2);
2646         __swab64s(&ladvise_hdr->lah_value3);
2647 }
2648 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);