lustre/ptlrpc/pack_generic.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/ptlrpc/pack_generic.c
  37  *
  38  * (Un)packing of OST requests
  39  *
  40  * Author: Peter J. Braam <braam@clusterfs.com>
  41  * Author: Phil Schwan <phil@clusterfs.com>
  42  * Author: Eric Barton <eeb@clusterfs.com>
  43  */
  44
  45 #define DEBUG_SUBSYSTEM S_RPC
  46
  47 #include <libcfs/libcfs.h>
  48
  49 #include <obd_support.h>
  50 #include <obd_class.h>
  51 #include <lustre_net.h>
  52 #include <obd_cksum.h>
  53 #include <lustre/ll_fiemap.h>
  54
  55 #include "ptlrpc_internal.h"
  56
  57 static inline int lustre_msg_hdr_size_v2(int count)
  58 {
  59         return cfs_size_round(offsetof(struct lustre_msg_v2,
  60                                        lm_buflens[count]));
  61 }
  62
  63 int lustre_msg_hdr_size(__u32 magic, int 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 -EINVAL;
  71         }
  72 }
  73 EXPORT_SYMBOL(lustre_msg_hdr_size);
  74
  75 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  76                             int index)
  77 {
  78         if (inout)
  79                 lustre_set_req_swabbed(req, index);
  80         else
  81                 lustre_set_rep_swabbed(req, index);
  82 }
  83 EXPORT_SYMBOL(ptlrpc_buf_set_swabbed);
  84
  85 int ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  86                          int index)
  87 {
  88         if (inout)
  89                 return (ptlrpc_req_need_swab(req) &&
  90                         !lustre_req_swabbed(req, index));
  91         else
  92                 return (ptlrpc_rep_need_swab(req) &&
  93                         !lustre_rep_swabbed(req, index));
  94 }
  95 EXPORT_SYMBOL(ptlrpc_buf_need_swab);
  96
  97 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  98                                               __u32 version)
  99 {
 100         __u32 ver = lustre_msg_get_version(msg);
 101         return (ver & LUSTRE_VERSION_MASK) != version;
 102 }
 103
 104 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version)
 105 {
 106         switch (msg->lm_magic) {
 107         case LUSTRE_MSG_MAGIC_V1:
 108                 CERROR("msg v1 not supported - please upgrade you system\n");
 109                 return -EINVAL;
 110         case LUSTRE_MSG_MAGIC_V2:
 111                 return lustre_msg_check_version_v2(msg, version);
 112         default:
 113                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 114                 return 0;
 115         }
 116 }
 117 EXPORT_SYMBOL(lustre_msg_check_version);
 118
 119 /* early reply size */
 120 int lustre_msg_early_size()
 121 {
 122         static int size = 0;
 123         if (!size) {
 124                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 125                  * with the old client (< 2.3) which doesn't have pb_jobid
 126                  * in the ptlrpc_body.
 127                  *
 128                  * XXX Remove this whenever we dorp interoprability with such
 129                  *     client.
 130                  */
 131                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 132                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 133         }
 134         return size;
 135 }
 136 EXPORT_SYMBOL(lustre_msg_early_size);
 137
 138 int lustre_msg_size_v2(int count, __u32 *lengths)
 139 {
 140         int size;
 141         int i;
 142
 143         size = lustre_msg_hdr_size_v2(count);
 144         for (i = 0; i < count; i++)
 145                 size += cfs_size_round(lengths[i]);
 146
 147         return size;
 148 }
 149 EXPORT_SYMBOL(lustre_msg_size_v2);
 150
 151 /* This returns the size of the buffer that is required to hold a lustre_msg
 152  * with the given sub-buffer lengths.
 153  * NOTE: this should only be used for NEW requests, and should always be
 154  *       in the form of a v2 request.  If this is a connection to a v1
 155  *       target then the first buffer will be stripped because the ptlrpc
 156  *       data is part of the lustre_msg_v1 header. b=14043 */
 157 int lustre_msg_size(__u32 magic, int count, __u32 *lens)
 158 {
 159         __u32 size[] = { sizeof(struct ptlrpc_body) };
 160
 161         if (!lens) {
 162                 LASSERT(count == 1);
 163                 lens = size;
 164         }
 165
 166         LASSERT(count > 0);
 167         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 168
 169         switch (magic) {
 170         case LUSTRE_MSG_MAGIC_V2:
 171                 return lustre_msg_size_v2(count, lens);
 172         default:
 173                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 174                 return -EINVAL;
 175         }
 176 }
 177 EXPORT_SYMBOL(lustre_msg_size);
 178
 179 /* This is used to determine the size of a buffer that was already packed
 180  * and will correctly handle the different message formats. */
 181 int lustre_packed_msg_size(struct lustre_msg *msg)
 182 {
 183         switch (msg->lm_magic) {
 184         case LUSTRE_MSG_MAGIC_V2:
 185                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 186         default:
 187                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 188                 return 0;
 189         }
 190 }
 191 EXPORT_SYMBOL(lustre_packed_msg_size);
 192
 193 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 194                         char **bufs)
 195 {
 196         char *ptr;
 197         int i;
 198
 199         msg->lm_bufcount = count;
 200         /* XXX: lm_secflvr uninitialized here */
 201         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 202
 203         for (i = 0; i < count; i++)
 204                 msg->lm_buflens[i] = lens[i];
 205
 206         if (bufs == NULL)
 207                 return;
 208
 209         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 210         for (i = 0; i < count; i++) {
 211                 char *tmp = bufs[i];
 212                 LOGL(tmp, lens[i], ptr);
 213         }
 214 }
 215 EXPORT_SYMBOL(lustre_init_msg_v2);
 216
 217 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 218                                   int count, __u32 *lens, char **bufs)
 219 {
 220         int reqlen, rc;
 221
 222         reqlen = lustre_msg_size_v2(count, lens);
 223
 224         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 225         if (rc)
 226                 return rc;
 227
 228         req->rq_reqlen = reqlen;
 229
 230         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 231         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 232         return 0;
 233 }
 234
 235 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 236                         __u32 *lens, char **bufs)
 237 {
 238         __u32 size[] = { sizeof(struct ptlrpc_body) };
 239
 240         if (!lens) {
 241                 LASSERT(count == 1);
 242                 lens = size;
 243         }
 244
 245         LASSERT(count > 0);
 246         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 247
 248         /* only use new format, we don't need to be compatible with 1.4 */
 249         magic = LUSTRE_MSG_MAGIC_V2;
 250
 251         switch (magic) {
 252         case LUSTRE_MSG_MAGIC_V2:
 253                 return lustre_pack_request_v2(req, count, lens, bufs);
 254         default:
 255                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 256                 return -EINVAL;
 257         }
 258 }
 259 EXPORT_SYMBOL(lustre_pack_request);
 260
 261 #if RS_DEBUG
 262 struct list_head ptlrpc_rs_debug_lru =
 263         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 264 spinlock_t ptlrpc_rs_debug_lock;
 265
 266 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 267 do {                                                                    \
 268         spin_lock(&ptlrpc_rs_debug_lock);                               \
 269         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 270         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 271 } while (0)
 272
 273 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 274 do {                                                                    \
 275         spin_lock(&ptlrpc_rs_debug_lock);                               \
 276         list_del(&(rs)->rs_debug_list);                         \
 277         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 278 } while (0)
 279 #else
 280 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 281 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 282 #endif
 283
 284 struct ptlrpc_reply_state *
 285 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 286 {
 287         struct ptlrpc_reply_state *rs = NULL;
 288
 289         spin_lock(&svcpt->scp_rep_lock);
 290
 291         /* See if we have anything in a pool, and wait if nothing */
 292         while (list_empty(&svcpt->scp_rep_idle)) {
 293                 struct l_wait_info      lwi;
 294                 int                     rc;
 295
 296                 spin_unlock(&svcpt->scp_rep_lock);
 297                 /* If we cannot get anything for some long time, we better
 298                  * bail out instead of waiting infinitely */
 299                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 300                 rc = l_wait_event(svcpt->scp_rep_waitq,
 301                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 302                 if (rc != 0)
 303                         goto out;
 304                 spin_lock(&svcpt->scp_rep_lock);
 305         }
 306
 307         rs = list_entry(svcpt->scp_rep_idle.next,
 308                             struct ptlrpc_reply_state, rs_list);
 309         list_del(&rs->rs_list);
 310
 311         spin_unlock(&svcpt->scp_rep_lock);
 312
 313         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 314         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 315         rs->rs_svcpt = svcpt;
 316         rs->rs_prealloc = 1;
 317 out:
 318         return rs;
 319 }
 320
 321 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 322 {
 323         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 324
 325         spin_lock(&svcpt->scp_rep_lock);
 326         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 327         spin_unlock(&svcpt->scp_rep_lock);
 328         wake_up(&svcpt->scp_rep_waitq);
 329 }
 330
 331 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 332                          __u32 *lens, char **bufs, int flags)
 333 {
 334         struct ptlrpc_reply_state *rs;
 335         int                        msg_len, rc;
 336         ENTRY;
 337
 338         LASSERT(req->rq_reply_state == NULL);
 339
 340         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 341                 spin_lock(&req->rq_lock);
 342                 req->rq_packed_final = 1;
 343                 spin_unlock(&req->rq_lock);
 344         }
 345
 346         msg_len = lustre_msg_size_v2(count, lens);
 347         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 348         if (rc)
 349                 RETURN(rc);
 350
 351         rs = req->rq_reply_state;
 352         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 353         rs->rs_cb_id.cbid_fn = reply_out_callback;
 354         rs->rs_cb_id.cbid_arg = rs;
 355         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 356         INIT_LIST_HEAD(&rs->rs_exp_list);
 357         INIT_LIST_HEAD(&rs->rs_obd_list);
 358         INIT_LIST_HEAD(&rs->rs_list);
 359         spin_lock_init(&rs->rs_lock);
 360
 361         req->rq_replen = msg_len;
 362         req->rq_reply_state = rs;
 363         req->rq_repmsg = rs->rs_msg;
 364
 365         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 366         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 367
 368         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 369
 370         RETURN(0);
 371 }
 372 EXPORT_SYMBOL(lustre_pack_reply_v2);
 373
 374 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 375                             char **bufs, int flags)
 376 {
 377         int rc = 0;
 378         __u32 size[] = { sizeof(struct ptlrpc_body) };
 379
 380         if (!lens) {
 381                 LASSERT(count == 1);
 382                 lens = size;
 383         }
 384
 385         LASSERT(count > 0);
 386         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 387
 388         switch (req->rq_reqmsg->lm_magic) {
 389         case LUSTRE_MSG_MAGIC_V2:
 390                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 391                 break;
 392         default:
 393                 LASSERTF(0, "incorrect message magic: %08x\n",
 394                          req->rq_reqmsg->lm_magic);
 395                 rc = -EINVAL;
 396         }
 397         if (rc != 0)
 398                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 399                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 400         return rc;
 401 }
 402 EXPORT_SYMBOL(lustre_pack_reply_flags);
 403
 404 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 405                       char **bufs)
 406 {
 407         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 408 }
 409 EXPORT_SYMBOL(lustre_pack_reply);
 410
 411 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, int n, int min_size)
 412 {
 413         int i, offset, buflen, bufcount;
 414
 415         LASSERT(m != NULL);
 416         LASSERT(n >= 0);
 417
 418         bufcount = m->lm_bufcount;
 419         if (unlikely(n >= bufcount)) {
 420                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 421                        m, n, bufcount);
 422                 return NULL;
 423         }
 424
 425         buflen = m->lm_buflens[n];
 426         if (unlikely(buflen < min_size)) {
 427                 CERROR("msg %p buffer[%d] size %d too small "
 428                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 429                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 430                 return NULL;
 431         }
 432
 433         offset = lustre_msg_hdr_size_v2(bufcount);
 434         for (i = 0; i < n; i++)
 435                 offset += cfs_size_round(m->lm_buflens[i]);
 436
 437         return (char *)m + offset;
 438 }
 439
 440 void *lustre_msg_buf(struct lustre_msg *m, int n, int min_size)
 441 {
 442         switch (m->lm_magic) {
 443         case LUSTRE_MSG_MAGIC_V2:
 444                 return lustre_msg_buf_v2(m, n, min_size);
 445         default:
 446                 LASSERTF(0, "incorrect message magic: %08x(msg:%p)\n", m->lm_magic, m);
 447                 return NULL;
 448         }
 449 }
 450 EXPORT_SYMBOL(lustre_msg_buf);
 451
 452 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, int segment,
 453                                 unsigned int newlen, int move_data)
 454 {
 455         char   *tail = NULL, *newpos;
 456         int     tail_len = 0, n;
 457
 458         LASSERT(msg);
 459         LASSERT(msg->lm_bufcount > segment);
 460         LASSERT(msg->lm_buflens[segment] >= newlen);
 461
 462         if (msg->lm_buflens[segment] == newlen)
 463                 goto out;
 464
 465         if (move_data && msg->lm_bufcount > segment + 1) {
 466                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 467                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 468                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 469         }
 470
 471         msg->lm_buflens[segment] = newlen;
 472
 473         if (tail && tail_len) {
 474                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 475                 LASSERT(newpos <= tail);
 476                 if (newpos != tail)
 477                         memmove(newpos, tail, tail_len);
 478         }
 479 out:
 480         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 481 }
 482
 483 /*
 484  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 485  * we also move data forward from @segment + 1.
 486  *
 487  * if @newlen == 0, we remove the segment completely, but we still keep the
 488  * totally bufcount the same to save possible data moving. this will leave a
 489  * unused segment with size 0 at the tail, but that's ok.
 490  *
 491  * return new msg size after shrinking.
 492  *
 493  * CAUTION:
 494  * + if any buffers higher than @segment has been filled in, must call shrink
 495  *   with non-zero @move_data.
 496  * + caller should NOT keep pointers to msg buffers which higher than @segment
 497  *   after call shrink.
 498  */
 499 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 500                       unsigned int newlen, int move_data)
 501 {
 502         switch (msg->lm_magic) {
 503         case LUSTRE_MSG_MAGIC_V2:
 504                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 505         default:
 506                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 507         }
 508 }
 509 EXPORT_SYMBOL(lustre_shrink_msg);
 510
 511 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 512 {
 513         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 514
 515         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 516         LASSERT(!rs->rs_difficult || rs->rs_handled);
 517         LASSERT(!rs->rs_on_net);
 518         LASSERT(!rs->rs_scheduled);
 519         LASSERT(rs->rs_export == NULL);
 520         LASSERT(rs->rs_nlocks == 0);
 521         LASSERT(list_empty(&rs->rs_exp_list));
 522         LASSERT(list_empty(&rs->rs_obd_list));
 523
 524         sptlrpc_svc_free_rs(rs);
 525 }
 526 EXPORT_SYMBOL(lustre_free_reply_state);
 527
 528 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 529 {
 530         int swabbed, required_len, i;
 531
 532         /* Now we know the sender speaks my language. */
 533         required_len = lustre_msg_hdr_size_v2(0);
 534         if (len < required_len) {
 535                 /* can't even look inside the message */
 536                 CERROR("message length %d too small for lustre_msg\n", len);
 537                 return -EINVAL;
 538         }
 539
 540         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 541
 542         if (swabbed) {
 543                 __swab32s(&m->lm_magic);
 544                 __swab32s(&m->lm_bufcount);
 545                 __swab32s(&m->lm_secflvr);
 546                 __swab32s(&m->lm_repsize);
 547                 __swab32s(&m->lm_cksum);
 548                 __swab32s(&m->lm_flags);
 549                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 550                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 551         }
 552
 553         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 554         if (len < required_len) {
 555                 /* didn't receive all the buffer lengths */
 556                 CERROR ("message length %d too small for %d buflens\n",
 557                         len, m->lm_bufcount);
 558                 return -EINVAL;
 559         }
 560
 561         for (i = 0; i < m->lm_bufcount; i++) {
 562                 if (swabbed)
 563                         __swab32s(&m->lm_buflens[i]);
 564                 required_len += cfs_size_round(m->lm_buflens[i]);
 565         }
 566
 567         if (len < required_len) {
 568                 CERROR("len: %d, required_len %d\n", len, required_len);
 569                 CERROR("bufcount: %d\n", m->lm_bufcount);
 570                 for (i = 0; i < m->lm_bufcount; i++)
 571                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 572                 return -EINVAL;
 573         }
 574
 575         return swabbed;
 576 }
 577
 578 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 579 {
 580         int required_len, rc;
 581         ENTRY;
 582
 583         /* We can provide a slightly better error log, if we check the
 584          * message magic and version first.  In the future, struct
 585          * lustre_msg may grow, and we'd like to log a version mismatch,
 586          * rather than a short message.
 587          *
 588          */
 589         required_len = offsetof(struct lustre_msg, lm_magic) +
 590                        sizeof(m->lm_magic);
 591         if (len < required_len) {
 592                 /* can't even look inside the message */
 593                 CERROR("message length %d too small for magic/version check\n",
 594                        len);
 595                 RETURN(-EINVAL);
 596         }
 597
 598         rc = lustre_unpack_msg_v2(m, len);
 599
 600         RETURN(rc);
 601 }
 602 EXPORT_SYMBOL(__lustre_unpack_msg);
 603
 604 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 605 {
 606         int rc;
 607         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 608         if (rc == 1) {
 609                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 610                 rc = 0;
 611         }
 612         return rc;
 613 }
 614 EXPORT_SYMBOL(ptlrpc_unpack_req_msg);
 615
 616 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 617 {
 618         int rc;
 619         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 620         if (rc == 1) {
 621                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 622                 rc = 0;
 623         }
 624         return rc;
 625 }
 626 EXPORT_SYMBOL(ptlrpc_unpack_rep_msg);
 627
 628 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 629                                                const int inout, int offset)
 630 {
 631         struct ptlrpc_body *pb;
 632         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 633
 634         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 635         if (!pb) {
 636                 CERROR("error unpacking ptlrpc body\n");
 637                 return -EFAULT;
 638         }
 639         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 640                 lustre_swab_ptlrpc_body(pb);
 641                 ptlrpc_buf_set_swabbed(req, inout, offset);
 642         }
 643
 644         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 645                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 646                  return -EINVAL;
 647         }
 648
 649         if (!inout)
 650                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 651
 652         return 0;
 653 }
 654
 655 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 656 {
 657         switch (req->rq_reqmsg->lm_magic) {
 658         case LUSTRE_MSG_MAGIC_V2:
 659                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 660         default:
 661                 CERROR("bad lustre msg magic: %08x\n",
 662                        req->rq_reqmsg->lm_magic);
 663                 return -EINVAL;
 664         }
 665 }
 666
 667 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 668 {
 669         switch (req->rq_repmsg->lm_magic) {
 670         case LUSTRE_MSG_MAGIC_V2:
 671                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 672         default:
 673                 CERROR("bad lustre msg magic: %08x\n",
 674                        req->rq_repmsg->lm_magic);
 675                 return -EINVAL;
 676         }
 677 }
 678
 679 static inline int lustre_msg_buflen_v2(struct lustre_msg_v2 *m, int n)
 680 {
 681         if (n >= m->lm_bufcount)
 682                 return 0;
 683
 684         return m->lm_buflens[n];
 685 }
 686
 687 /**
 688  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 689  * \param m lustre_msg (request or reply) to look at
 690  * \param n message index (base 0)
 691  *
 692  * returns zero for non-existent message indices
 693  */
 694 int lustre_msg_buflen(struct lustre_msg *m, int n)
 695 {
 696         switch (m->lm_magic) {
 697         case LUSTRE_MSG_MAGIC_V2:
 698                 return lustre_msg_buflen_v2(m, n);
 699         default:
 700                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 701                 return -EINVAL;
 702         }
 703 }
 704 EXPORT_SYMBOL(lustre_msg_buflen);
 705
 706 static inline void
 707 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, int n, int len)
 708 {
 709         if (n >= m->lm_bufcount)
 710                 LBUG();
 711
 712         m->lm_buflens[n] = len;
 713 }
 714
 715 void lustre_msg_set_buflen(struct lustre_msg *m, int n, int len)
 716 {
 717         switch (m->lm_magic) {
 718         case LUSTRE_MSG_MAGIC_V2:
 719                 lustre_msg_set_buflen_v2(m, n, len);
 720                 return;
 721         default:
 722                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 723         }
 724 }
 725
 726 EXPORT_SYMBOL(lustre_msg_set_buflen);
 727
 728 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 729  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 730 int lustre_msg_bufcount(struct lustre_msg *m)
 731 {
 732         switch (m->lm_magic) {
 733         case LUSTRE_MSG_MAGIC_V2:
 734                 return m->lm_bufcount;
 735         default:
 736                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 737                 return -EINVAL;
 738         }
 739 }
 740 EXPORT_SYMBOL(lustre_msg_bufcount);
 741
 742 char *lustre_msg_string(struct lustre_msg *m, int index, int max_len)
 743 {
 744         /* max_len == 0 means the string should fill the buffer */
 745         char *str;
 746         int slen, blen;
 747
 748         switch (m->lm_magic) {
 749         case LUSTRE_MSG_MAGIC_V2:
 750                 str = lustre_msg_buf_v2(m, index, 0);
 751                 blen = lustre_msg_buflen_v2(m, index);
 752                 break;
 753         default:
 754                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 755         }
 756
 757         if (str == NULL) {
 758                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 759                 return NULL;
 760         }
 761
 762         slen = strnlen(str, blen);
 763
 764         if (slen == blen) {                     /* not NULL terminated */
 765                 CERROR("can't unpack non-NULL terminated string in "
 766                         "msg %p buffer[%d] len %d\n", m, index, blen);
 767                 return NULL;
 768         }
 769
 770         if (max_len == 0) {
 771                 if (slen != blen - 1) {
 772                         CERROR("can't unpack short string in msg %p "
 773                                "buffer[%d] len %d: strlen %d\n",
 774                                m, index, blen, slen);
 775                         return NULL;
 776                 }
 777         } else if (slen > max_len) {
 778                 CERROR("can't unpack oversized string in msg %p "
 779                        "buffer[%d] len %d strlen %d: max %d expected\n",
 780                        m, index, blen, slen, max_len);
 781                 return NULL;
 782         }
 783
 784         return str;
 785 }
 786 EXPORT_SYMBOL(lustre_msg_string);
 787
 788 /* Wrap up the normal fixed length cases */
 789 static inline void *__lustre_swab_buf(struct lustre_msg *msg, int index,
 790                                       int min_size, void *swabber)
 791 {
 792         void *ptr = NULL;
 793
 794         LASSERT(msg != NULL);
 795         switch (msg->lm_magic) {
 796         case LUSTRE_MSG_MAGIC_V2:
 797                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 798                 break;
 799         default:
 800                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 801         }
 802
 803         if (ptr && swabber)
 804                 ((void (*)(void *))swabber)(ptr);
 805
 806         return ptr;
 807 }
 808
 809 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 810 {
 811         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 812                                  sizeof(struct ptlrpc_body_v2));
 813 }
 814
 815 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
 816 {
 817         switch (msg->lm_magic) {
 818         case LUSTRE_MSG_MAGIC_V1:
 819         case LUSTRE_MSG_MAGIC_V1_SWABBED:
 820                 return 0;
 821         case LUSTRE_MSG_MAGIC_V2:
 822                 /* already in host endian */
 823                 return msg->lm_flags;
 824         default:
 825                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 826                 return 0;
 827         }
 828 }
 829 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 830
 831 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 832 {
 833         switch (msg->lm_magic) {
 834         case LUSTRE_MSG_MAGIC_V1:
 835                 return;
 836         case LUSTRE_MSG_MAGIC_V2:
 837                 msg->lm_flags = flags;
 838                 return;
 839         default:
 840                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 841         }
 842 }
 843
 844 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 845 {
 846         switch (msg->lm_magic) {
 847         case LUSTRE_MSG_MAGIC_V2: {
 848                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 849                 if (!pb) {
 850                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 851                         return 0;
 852                 }
 853                 return pb->pb_flags;
 854         }
 855         default:
 856                 /* flags might be printed in debug code while message
 857                  * uninitialized */
 858                 return 0;
 859         }
 860 }
 861 EXPORT_SYMBOL(lustre_msg_get_flags);
 862
 863 void lustre_msg_add_flags(struct lustre_msg *msg, int flags)
 864 {
 865         switch (msg->lm_magic) {
 866         case LUSTRE_MSG_MAGIC_V2: {
 867                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 868                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 869                 pb->pb_flags |= flags;
 870                 return;
 871         }
 872         default:
 873                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 874         }
 875 }
 876 EXPORT_SYMBOL(lustre_msg_add_flags);
 877
 878 void lustre_msg_set_flags(struct lustre_msg *msg, int flags)
 879 {
 880         switch (msg->lm_magic) {
 881         case LUSTRE_MSG_MAGIC_V2: {
 882                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 883                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 884                 pb->pb_flags = flags;
 885                 return;
 886         }
 887         default:
 888                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 889         }
 890 }
 891 EXPORT_SYMBOL(lustre_msg_set_flags);
 892
 893 void lustre_msg_clear_flags(struct lustre_msg *msg, int flags)
 894 {
 895         switch (msg->lm_magic) {
 896         case LUSTRE_MSG_MAGIC_V2: {
 897                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 898                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 899                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
 900                 return;
 901         }
 902         default:
 903                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 904         }
 905 }
 906 EXPORT_SYMBOL(lustre_msg_clear_flags);
 907
 908 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 909 {
 910         switch (msg->lm_magic) {
 911         case LUSTRE_MSG_MAGIC_V2: {
 912                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 913                 if (!pb) {
 914                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 915                         return 0;
 916                 }
 917                 return pb->pb_op_flags;
 918         }
 919         default:
 920                 return 0;
 921         }
 922 }
 923 EXPORT_SYMBOL(lustre_msg_get_op_flags);
 924
 925 void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags)
 926 {
 927         switch (msg->lm_magic) {
 928         case LUSTRE_MSG_MAGIC_V2: {
 929                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 930                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 931                 pb->pb_op_flags |= flags;
 932                 return;
 933         }
 934         default:
 935                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 936         }
 937 }
 938 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 939
 940 void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags)
 941 {
 942         switch (msg->lm_magic) {
 943         case LUSTRE_MSG_MAGIC_V2: {
 944                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 945                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 946                 pb->pb_op_flags |= flags;
 947                 return;
 948         }
 949         default:
 950                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 951         }
 952 }
 953 EXPORT_SYMBOL(lustre_msg_set_op_flags);
 954
 955 struct lustre_handle *lustre_msg_get_handle(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) {
 961                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 962                         return NULL;
 963                 }
 964                 return &pb->pb_handle;
 965         }
 966         default:
 967                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 968                 return NULL;
 969         }
 970 }
 971 EXPORT_SYMBOL(lustre_msg_get_handle);
 972
 973 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 974 {
 975         switch (msg->lm_magic) {
 976         case LUSTRE_MSG_MAGIC_V2: {
 977                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 978                 if (!pb) {
 979                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 980                         return PTL_RPC_MSG_ERR;
 981                 }
 982                 return pb->pb_type;
 983         }
 984         default:
 985                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 986                 return PTL_RPC_MSG_ERR;
 987         }
 988 }
 989 EXPORT_SYMBOL(lustre_msg_get_type);
 990
 991 __u32 lustre_msg_get_version(struct lustre_msg *msg)
 992 {
 993         switch (msg->lm_magic) {
 994         case LUSTRE_MSG_MAGIC_V2: {
 995                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 996                 if (!pb) {
 997                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 998                         return 0;
 999                 }
1000                 return pb->pb_version;
1001         }
1002         default:
1003                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1004                 return 0;
1005         }
1006 }
1007 EXPORT_SYMBOL(lustre_msg_get_version);
1008
1009 void lustre_msg_add_version(struct lustre_msg *msg, int version)
1010 {
1011         switch (msg->lm_magic) {
1012         case LUSTRE_MSG_MAGIC_V2: {
1013                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1014                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1015                 pb->pb_version |= version;
1016                 return;
1017         }
1018         default:
1019                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1020         }
1021 }
1022 EXPORT_SYMBOL(lustre_msg_add_version);
1023
1024 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1025 {
1026         switch (msg->lm_magic) {
1027         case LUSTRE_MSG_MAGIC_V2: {
1028                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1029                 if (!pb) {
1030                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1031                         return 0;
1032                 }
1033                 return pb->pb_opc;
1034         }
1035         default:
1036                 CERROR("incorrect message magic: %08x(msg:%p)\n", msg->lm_magic, msg);
1037                 LBUG();
1038                 return 0;
1039         }
1040 }
1041 EXPORT_SYMBOL(lustre_msg_get_opc);
1042
1043 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1044 {
1045         switch (msg->lm_magic) {
1046         case LUSTRE_MSG_MAGIC_V2: {
1047                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1048                 if (!pb) {
1049                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1050                         return 0;
1051                 }
1052                 return pb->pb_last_xid;
1053         }
1054         default:
1055                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1056                 return 0;
1057         }
1058 }
1059 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1060
1061 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1062 {
1063         switch (msg->lm_magic) {
1064         case LUSTRE_MSG_MAGIC_V2: {
1065                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1066                 if (!pb) {
1067                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1068                         return 0;
1069                 }
1070                 return pb->pb_last_committed;
1071         }
1072         default:
1073                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1074                 return 0;
1075         }
1076 }
1077 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1078
1079 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1080 {
1081         switch (msg->lm_magic) {
1082         case LUSTRE_MSG_MAGIC_V1:
1083                 return NULL;
1084         case LUSTRE_MSG_MAGIC_V2: {
1085                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1086                 if (!pb) {
1087                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1088                         return NULL;
1089                 }
1090                 return pb->pb_pre_versions;
1091         }
1092         default:
1093                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1094                 return NULL;
1095         }
1096 }
1097 EXPORT_SYMBOL(lustre_msg_get_versions);
1098
1099 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1100 {
1101         switch (msg->lm_magic) {
1102         case LUSTRE_MSG_MAGIC_V2: {
1103                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1104                 if (!pb) {
1105                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1106                         return 0;
1107                 }
1108                 return pb->pb_transno;
1109         }
1110         default:
1111                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1112                 return 0;
1113         }
1114 }
1115 EXPORT_SYMBOL(lustre_msg_get_transno);
1116
1117 int lustre_msg_get_status(struct lustre_msg *msg)
1118 {
1119         switch (msg->lm_magic) {
1120         case LUSTRE_MSG_MAGIC_V2: {
1121                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1122                 if (!pb) {
1123                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1124                         return -EINVAL;
1125                 }
1126                 return pb->pb_status;
1127         }
1128         default:
1129                 /* status might be printed in debug code while message
1130                  * uninitialized */
1131                 return -EINVAL;
1132         }
1133 }
1134 EXPORT_SYMBOL(lustre_msg_get_status);
1135
1136 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1137 {
1138         switch (msg->lm_magic) {
1139         case LUSTRE_MSG_MAGIC_V2: {
1140                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1141                 if (!pb) {
1142                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1143                         return -EINVAL;
1144                 }
1145                 return pb->pb_slv;
1146         }
1147         default:
1148                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1149                 return -EINVAL;
1150         }
1151 }
1152 EXPORT_SYMBOL(lustre_msg_get_slv);
1153
1154
1155 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1156 {
1157         switch (msg->lm_magic) {
1158         case LUSTRE_MSG_MAGIC_V2: {
1159                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1160                 if (!pb) {
1161                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1162                         return;
1163                 }
1164                 pb->pb_slv = slv;
1165                 return;
1166         }
1167         default:
1168                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1169                 return;
1170         }
1171 }
1172 EXPORT_SYMBOL(lustre_msg_set_slv);
1173
1174 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1175 {
1176         switch (msg->lm_magic) {
1177         case LUSTRE_MSG_MAGIC_V2: {
1178                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1179                 if (!pb) {
1180                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1181                         return -EINVAL;
1182                 }
1183                 return pb->pb_limit;
1184         }
1185         default:
1186                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1187                 return -EINVAL;
1188         }
1189 }
1190 EXPORT_SYMBOL(lustre_msg_get_limit);
1191
1192
1193 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1194 {
1195         switch (msg->lm_magic) {
1196         case LUSTRE_MSG_MAGIC_V2: {
1197                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1198                 if (!pb) {
1199                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1200                         return;
1201                 }
1202                 pb->pb_limit = limit;
1203                 return;
1204         }
1205         default:
1206                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1207                 return;
1208         }
1209 }
1210 EXPORT_SYMBOL(lustre_msg_set_limit);
1211
1212 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1213 {
1214         switch (msg->lm_magic) {
1215         case LUSTRE_MSG_MAGIC_V2: {
1216                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1217                 if (!pb) {
1218                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1219                         return 0;
1220                 }
1221                 return pb->pb_conn_cnt;
1222         }
1223         default:
1224                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1225                 return 0;
1226         }
1227 }
1228 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1229
1230 int lustre_msg_is_v1(struct lustre_msg *msg)
1231 {
1232         switch (msg->lm_magic) {
1233         case LUSTRE_MSG_MAGIC_V1:
1234         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1235                 return 1;
1236         default:
1237                 return 0;
1238         }
1239 }
1240 EXPORT_SYMBOL(lustre_msg_is_v1);
1241
1242 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1243 {
1244         switch (msg->lm_magic) {
1245         case LUSTRE_MSG_MAGIC_V2:
1246                 return msg->lm_magic;
1247         default:
1248                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1249                 return 0;
1250         }
1251 }
1252 EXPORT_SYMBOL(lustre_msg_get_magic);
1253
1254 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1255 {
1256         switch (msg->lm_magic) {
1257         case LUSTRE_MSG_MAGIC_V1:
1258         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1259                 return 0;
1260         case LUSTRE_MSG_MAGIC_V2: {
1261                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1262                 if (!pb) {
1263                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1264                         return 0;
1265
1266                 }
1267                 return pb->pb_timeout;
1268         }
1269         default:
1270                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1271                 return 0;
1272         }
1273 }
1274
1275 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1276 {
1277         switch (msg->lm_magic) {
1278         case LUSTRE_MSG_MAGIC_V1:
1279         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1280                 return 0;
1281         case LUSTRE_MSG_MAGIC_V2: {
1282                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1283                 if (!pb) {
1284                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1285                         return 0;
1286
1287                 }
1288                 return pb->pb_service_time;
1289         }
1290         default:
1291                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1292                 return 0;
1293         }
1294 }
1295
1296 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1297 {
1298         switch (msg->lm_magic) {
1299         case LUSTRE_MSG_MAGIC_V1:
1300         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1301                 return NULL;
1302         case LUSTRE_MSG_MAGIC_V2: {
1303                 struct ptlrpc_body *pb =
1304                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1305                                           sizeof(struct ptlrpc_body));
1306                 if (!pb)
1307                         return NULL;
1308
1309                 return pb->pb_jobid;
1310         }
1311         default:
1312                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1313                 return NULL;
1314         }
1315 }
1316 EXPORT_SYMBOL(lustre_msg_get_jobid);
1317
1318 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1319 {
1320         switch (msg->lm_magic) {
1321         case LUSTRE_MSG_MAGIC_V2:
1322                 return msg->lm_cksum;
1323         default:
1324                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1325                 return 0;
1326         }
1327 }
1328
1329 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 53, 0)
1330 /*
1331  * In 1.6 and 1.8 the checksum was computed only on struct ptlrpc_body as
1332  * it was in 1.6 (88 bytes, smaller than the full size in 1.8).  It makes
1333  * more sense to compute the checksum on the full ptlrpc_body, regardless
1334  * of what size it is, but in order to keep interoperability with 1.8 we
1335  * can optionally also checksum only the first 88 bytes (caller decides). */
1336 # define ptlrpc_body_cksum_size_compat18         88
1337
1338 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg, int compat18)
1339 #else
1340 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1341 #endif
1342 {
1343         switch (msg->lm_magic) {
1344         case LUSTRE_MSG_MAGIC_V2: {
1345                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1346 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 53, 0)
1347                 __u32 len = compat18 ? ptlrpc_body_cksum_size_compat18 :
1348                             lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1349 #else
1350                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1351 #endif
1352                 unsigned int hsize = 4;
1353                 __u32 crc;
1354
1355                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1356                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1357                                        len, NULL, 0, (unsigned char *)&crc,
1358                                        &hsize);
1359                 return crc;
1360         }
1361         default:
1362                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1363                 return 0;
1364         }
1365 }
1366
1367 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1368 {
1369         switch (msg->lm_magic) {
1370         case LUSTRE_MSG_MAGIC_V2: {
1371                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1372                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1373                 pb->pb_handle = *handle;
1374                 return;
1375         }
1376         default:
1377                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1378         }
1379 }
1380 EXPORT_SYMBOL(lustre_msg_set_handle);
1381
1382 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1383 {
1384         switch (msg->lm_magic) {
1385         case LUSTRE_MSG_MAGIC_V2: {
1386                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1387                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1388                 pb->pb_type = type;
1389                 return;
1390         }
1391         default:
1392                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1393         }
1394 }
1395 EXPORT_SYMBOL(lustre_msg_set_type);
1396
1397 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1398 {
1399         switch (msg->lm_magic) {
1400         case LUSTRE_MSG_MAGIC_V2: {
1401                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1402                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1403                 pb->pb_opc = opc;
1404                 return;
1405         }
1406         default:
1407                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1408         }
1409 }
1410 EXPORT_SYMBOL(lustre_msg_set_opc);
1411
1412 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1413 {
1414         switch (msg->lm_magic) {
1415         case LUSTRE_MSG_MAGIC_V2: {
1416                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1417                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1418                 pb->pb_last_xid = last_xid;
1419                 return;
1420         }
1421         default:
1422                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1423         }
1424 }
1425 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1426
1427 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1428 {
1429         switch (msg->lm_magic) {
1430         case LUSTRE_MSG_MAGIC_V2: {
1431                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1432                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1433                 pb->pb_last_committed = last_committed;
1434                 return;
1435         }
1436         default:
1437                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1438         }
1439 }
1440 EXPORT_SYMBOL(lustre_msg_set_last_committed);
1441
1442 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1443 {
1444         switch (msg->lm_magic) {
1445         case LUSTRE_MSG_MAGIC_V1:
1446                 return;
1447         case LUSTRE_MSG_MAGIC_V2: {
1448                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1449                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1450                 pb->pb_pre_versions[0] = versions[0];
1451                 pb->pb_pre_versions[1] = versions[1];
1452                 pb->pb_pre_versions[2] = versions[2];
1453                 pb->pb_pre_versions[3] = versions[3];
1454                 return;
1455         }
1456         default:
1457                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1458         }
1459 }
1460 EXPORT_SYMBOL(lustre_msg_set_versions);
1461
1462 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1463 {
1464         switch (msg->lm_magic) {
1465         case LUSTRE_MSG_MAGIC_V2: {
1466                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1467                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1468                 pb->pb_transno = transno;
1469                 return;
1470         }
1471         default:
1472                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1473         }
1474 }
1475 EXPORT_SYMBOL(lustre_msg_set_transno);
1476
1477 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1478 {
1479         switch (msg->lm_magic) {
1480         case LUSTRE_MSG_MAGIC_V2: {
1481                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1482                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1483                 pb->pb_status = status;
1484                 return;
1485         }
1486         default:
1487                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1488         }
1489 }
1490 EXPORT_SYMBOL(lustre_msg_set_status);
1491
1492 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1493 {
1494         switch (msg->lm_magic) {
1495         case LUSTRE_MSG_MAGIC_V2: {
1496                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1497                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1498                 pb->pb_conn_cnt = conn_cnt;
1499                 return;
1500         }
1501         default:
1502                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1503         }
1504 }
1505 EXPORT_SYMBOL(lustre_msg_set_conn_cnt);
1506
1507 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1508 {
1509         switch (msg->lm_magic) {
1510         case LUSTRE_MSG_MAGIC_V1:
1511                 return;
1512         case LUSTRE_MSG_MAGIC_V2: {
1513                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1514                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1515                 pb->pb_timeout = timeout;
1516                 return;
1517         }
1518         default:
1519                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1520         }
1521 }
1522
1523 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1524 {
1525         switch (msg->lm_magic) {
1526         case LUSTRE_MSG_MAGIC_V1:
1527                 return;
1528         case LUSTRE_MSG_MAGIC_V2: {
1529                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1530                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1531                 pb->pb_service_time = service_time;
1532                 return;
1533         }
1534         default:
1535                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1536         }
1537 }
1538
1539 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1540 {
1541         switch (msg->lm_magic) {
1542         case LUSTRE_MSG_MAGIC_V1:
1543                 return;
1544         case LUSTRE_MSG_MAGIC_V2: {
1545                 __u32 opc = lustre_msg_get_opc(msg);
1546                 struct ptlrpc_body *pb;
1547
1548                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1549                  * See the comment in ptlrpc_request_pack(). */
1550                 if (!opc || opc == LDLM_BL_CALLBACK ||
1551                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1552                         return;
1553
1554                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1555                                        sizeof(struct ptlrpc_body));
1556                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1557
1558                 if (jobid != NULL)
1559                         memcpy(pb->pb_jobid, jobid, LUSTRE_JOBID_SIZE);
1560                 else if (pb->pb_jobid[0] == '\0')
1561                         lustre_get_jobid(pb->pb_jobid);
1562                 return;
1563         }
1564         default:
1565                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1566         }
1567 }
1568 EXPORT_SYMBOL(lustre_msg_set_jobid);
1569
1570 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1571 {
1572         switch (msg->lm_magic) {
1573         case LUSTRE_MSG_MAGIC_V1:
1574                 return;
1575         case LUSTRE_MSG_MAGIC_V2:
1576                 msg->lm_cksum = cksum;
1577                 return;
1578         default:
1579                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1580         }
1581 }
1582
1583
1584 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1585 {
1586         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1587
1588         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1589                                          req->rq_pill.rc_area[RCL_SERVER]);
1590         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1591                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1592 }
1593 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1594
1595 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1596 {
1597         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1598         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1599                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1600 }
1601 EXPORT_SYMBOL(ptlrpc_req_set_repsize);
1602
1603 /**
1604  * Send a remote set_info_async.
1605  *
1606  * This may go from client to server or server to client.
1607  */
1608 int do_set_info_async(struct obd_import *imp,
1609                       int opcode, int version,
1610                       obd_count keylen, void *key,
1611                       obd_count vallen, void *val,
1612                       struct ptlrpc_request_set *set)
1613 {
1614         struct ptlrpc_request *req;
1615         char                  *tmp;
1616         int                    rc;
1617         ENTRY;
1618
1619         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1620         if (req == NULL)
1621                 RETURN(-ENOMEM);
1622
1623         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1624                              RCL_CLIENT, keylen);
1625         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1626                              RCL_CLIENT, vallen);
1627         rc = ptlrpc_request_pack(req, version, opcode);
1628         if (rc) {
1629                 ptlrpc_request_free(req);
1630                 RETURN(rc);
1631         }
1632
1633         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1634         memcpy(tmp, key, keylen);
1635         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1636         memcpy(tmp, val, vallen);
1637
1638         ptlrpc_request_set_replen(req);
1639
1640         if (set) {
1641                 ptlrpc_set_add_req(set, req);
1642                 ptlrpc_check_set(NULL, set);
1643         } else {
1644                 rc = ptlrpc_queue_wait(req);
1645                 ptlrpc_req_finished(req);
1646         }
1647
1648         RETURN(rc);
1649 }
1650 EXPORT_SYMBOL(do_set_info_async);
1651
1652 /* byte flipping routines for all wire types declared in
1653  * lustre_idl.h implemented here.
1654  */
1655 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1656 {
1657         __swab32s (&b->pb_type);
1658         __swab32s (&b->pb_version);
1659         __swab32s (&b->pb_opc);
1660         __swab32s (&b->pb_status);
1661         __swab64s (&b->pb_last_xid);
1662         __swab64s (&b->pb_last_seen);
1663         __swab64s (&b->pb_last_committed);
1664         __swab64s (&b->pb_transno);
1665         __swab32s (&b->pb_flags);
1666         __swab32s (&b->pb_op_flags);
1667         __swab32s (&b->pb_conn_cnt);
1668         __swab32s (&b->pb_timeout);
1669         __swab32s (&b->pb_service_time);
1670         __swab32s (&b->pb_limit);
1671         __swab64s (&b->pb_slv);
1672         __swab64s (&b->pb_pre_versions[0]);
1673         __swab64s (&b->pb_pre_versions[1]);
1674         __swab64s (&b->pb_pre_versions[2]);
1675         __swab64s (&b->pb_pre_versions[3]);
1676         CLASSERT(offsetof(typeof(*b), pb_padding) != 0);
1677         /* While we need to maintain compatibility between
1678          * clients and servers without ptlrpc_body_v2 (< 2.3)
1679          * do not swab any fields beyond pb_jobid, as we are
1680          * using this swab function for both ptlrpc_body
1681          * and ptlrpc_body_v2. */
1682         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1683 }
1684 EXPORT_SYMBOL(lustre_swab_ptlrpc_body);
1685
1686 void lustre_swab_connect(struct obd_connect_data *ocd)
1687 {
1688         __swab64s(&ocd->ocd_connect_flags);
1689         __swab32s(&ocd->ocd_version);
1690         __swab32s(&ocd->ocd_grant);
1691         __swab64s(&ocd->ocd_ibits_known);
1692         __swab32s(&ocd->ocd_index);
1693         __swab32s(&ocd->ocd_brw_size);
1694         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1695          * they are 8-byte values */
1696         __swab16s(&ocd->ocd_grant_extent);
1697         __swab32s(&ocd->ocd_unused);
1698         __swab64s(&ocd->ocd_transno);
1699         __swab32s(&ocd->ocd_group);
1700         __swab32s(&ocd->ocd_cksum_types);
1701         __swab32s(&ocd->ocd_instance);
1702         /* Fields after ocd_cksum_types are only accessible by the receiver
1703          * if the corresponding flag in ocd_connect_flags is set. Accessing
1704          * any field after ocd_maxbytes on the receiver without a valid flag
1705          * may result in out-of-bound memory access and kernel oops. */
1706         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1707                 __swab32s(&ocd->ocd_max_easize);
1708         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1709                 __swab64s(&ocd->ocd_maxbytes);
1710         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1711         CLASSERT(offsetof(typeof(*ocd), padding2) != 0);
1712         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1713         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1714         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1715         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1716         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1717         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1718         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1719         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1720         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1721         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1722         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1723         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1724         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1725 }
1726
1727 void lustre_swab_obdo (struct obdo  *o)
1728 {
1729         __swab64s (&o->o_valid);
1730         lustre_swab_ost_id(&o->o_oi);
1731         __swab64s (&o->o_parent_seq);
1732         __swab64s (&o->o_size);
1733         __swab64s (&o->o_mtime);
1734         __swab64s (&o->o_atime);
1735         __swab64s (&o->o_ctime);
1736         __swab64s (&o->o_blocks);
1737         __swab64s (&o->o_grant);
1738         __swab32s (&o->o_blksize);
1739         __swab32s (&o->o_mode);
1740         __swab32s (&o->o_uid);
1741         __swab32s (&o->o_gid);
1742         __swab32s (&o->o_flags);
1743         __swab32s (&o->o_nlink);
1744         __swab32s (&o->o_parent_oid);
1745         __swab32s (&o->o_misc);
1746         __swab64s (&o->o_ioepoch);
1747         __swab32s (&o->o_stripe_idx);
1748         __swab32s (&o->o_parent_ver);
1749         /* o_handle is opaque */
1750         /* o_lcookie is swabbed elsewhere */
1751         __swab32s (&o->o_uid_h);
1752         __swab32s (&o->o_gid_h);
1753         __swab64s (&o->o_data_version);
1754         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1755         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1756         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1757
1758 }
1759 EXPORT_SYMBOL(lustre_swab_obdo);
1760
1761 void lustre_swab_obd_statfs (struct obd_statfs *os)
1762 {
1763         __swab64s (&os->os_type);
1764         __swab64s (&os->os_blocks);
1765         __swab64s (&os->os_bfree);
1766         __swab64s (&os->os_bavail);
1767         __swab64s (&os->os_files);
1768         __swab64s (&os->os_ffree);
1769         /* no need to swab os_fsid */
1770         __swab32s (&os->os_bsize);
1771         __swab32s (&os->os_namelen);
1772         __swab64s (&os->os_maxbytes);
1773         __swab32s (&os->os_state);
1774         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1775         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1776         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1777         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1778         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1779         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1780         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1781         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1782         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1783 }
1784 EXPORT_SYMBOL(lustre_swab_obd_statfs);
1785
1786 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1787 {
1788         lustre_swab_ost_id(&ioo->ioo_oid);
1789         __swab32s(&ioo->ioo_max_brw);
1790         __swab32s(&ioo->ioo_bufcnt);
1791 }
1792 EXPORT_SYMBOL(lustre_swab_obd_ioobj);
1793
1794 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1795 {
1796         __swab64s(&nbr->rnb_offset);
1797         __swab32s(&nbr->rnb_len);
1798         __swab32s(&nbr->rnb_flags);
1799 }
1800 EXPORT_SYMBOL(lustre_swab_niobuf_remote);
1801
1802 void lustre_swab_ost_body (struct ost_body *b)
1803 {
1804         lustre_swab_obdo (&b->oa);
1805 }
1806 EXPORT_SYMBOL(lustre_swab_ost_body);
1807
1808 void lustre_swab_ost_last_id(obd_id *id)
1809 {
1810         __swab64s(id);
1811 }
1812 EXPORT_SYMBOL(lustre_swab_ost_last_id);
1813
1814 void lustre_swab_generic_32s(__u32 *val)
1815 {
1816         __swab32s(val);
1817 }
1818 EXPORT_SYMBOL(lustre_swab_generic_32s);
1819
1820 void lustre_swab_gl_desc(union ldlm_gl_desc *desc)
1821 {
1822         lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid);
1823         __swab64s(&desc->lquota_desc.gl_flags);
1824         __swab64s(&desc->lquota_desc.gl_ver);
1825         __swab64s(&desc->lquota_desc.gl_hardlimit);
1826         __swab64s(&desc->lquota_desc.gl_softlimit);
1827         __swab64s(&desc->lquota_desc.gl_time);
1828         CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0);
1829 }
1830
1831 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1832 {
1833         __swab64s(&lvb->lvb_size);
1834         __swab64s(&lvb->lvb_mtime);
1835         __swab64s(&lvb->lvb_atime);
1836         __swab64s(&lvb->lvb_ctime);
1837         __swab64s(&lvb->lvb_blocks);
1838 }
1839 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1840
1841 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1842 {
1843         __swab64s(&lvb->lvb_size);
1844         __swab64s(&lvb->lvb_mtime);
1845         __swab64s(&lvb->lvb_atime);
1846         __swab64s(&lvb->lvb_ctime);
1847         __swab64s(&lvb->lvb_blocks);
1848         __swab32s(&lvb->lvb_mtime_ns);
1849         __swab32s(&lvb->lvb_atime_ns);
1850         __swab32s(&lvb->lvb_ctime_ns);
1851         __swab32s(&lvb->lvb_padding);
1852 }
1853 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1854
1855 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1856 {
1857         __swab64s(&lvb->lvb_flags);
1858         __swab64s(&lvb->lvb_id_may_rel);
1859         __swab64s(&lvb->lvb_id_rel);
1860         __swab64s(&lvb->lvb_id_qunit);
1861         __swab64s(&lvb->lvb_pad1);
1862 }
1863 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1864
1865 void lustre_swab_mdt_body (struct mdt_body *b)
1866 {
1867         lustre_swab_lu_fid(&b->mbo_fid1);
1868         lustre_swab_lu_fid(&b->mbo_fid2);
1869         /* handle is opaque */
1870         __swab64s(&b->mbo_valid);
1871         __swab64s(&b->mbo_size);
1872         __swab64s(&b->mbo_mtime);
1873         __swab64s(&b->mbo_atime);
1874         __swab64s(&b->mbo_ctime);
1875         __swab64s(&b->mbo_blocks);
1876         __swab64s(&b->mbo_ioepoch);
1877         __swab64s(&b->mbo_t_state);
1878         __swab32s(&b->mbo_fsuid);
1879         __swab32s(&b->mbo_fsgid);
1880         __swab32s(&b->mbo_capability);
1881         __swab32s(&b->mbo_mode);
1882         __swab32s(&b->mbo_uid);
1883         __swab32s(&b->mbo_gid);
1884         __swab32s(&b->mbo_flags);
1885         __swab32s(&b->mbo_rdev);
1886         __swab32s(&b->mbo_nlink);
1887         CLASSERT(offsetof(typeof(*b), mbo_unused2) != 0);
1888         __swab32s(&b->mbo_suppgid);
1889         __swab32s(&b->mbo_eadatasize);
1890         __swab32s(&b->mbo_aclsize);
1891         __swab32s(&b->mbo_max_mdsize);
1892         __swab32s(&b->mbo_max_cookiesize);
1893         __swab32s(&b->mbo_uid_h);
1894         __swab32s(&b->mbo_gid_h);
1895         CLASSERT(offsetof(typeof(*b), mbo_padding_5) != 0);
1896 }
1897 EXPORT_SYMBOL(lustre_swab_mdt_body);
1898
1899 void lustre_swab_mdt_ioepoch (struct mdt_ioepoch *b)
1900 {
1901         /* handle is opaque */
1902          __swab64s (&b->ioepoch);
1903          __swab32s (&b->flags);
1904          CLASSERT(offsetof(typeof(*b), padding) != 0);
1905 }
1906 EXPORT_SYMBOL(lustre_swab_mdt_ioepoch);
1907
1908 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1909 {
1910         int i;
1911         __swab32s(&mti->mti_lustre_ver);
1912         __swab32s(&mti->mti_stripe_index);
1913         __swab32s(&mti->mti_config_ver);
1914         __swab32s(&mti->mti_flags);
1915         __swab32s(&mti->mti_instance);
1916         __swab32s(&mti->mti_nid_count);
1917         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1918         for (i = 0; i < MTI_NIDS_MAX; i++)
1919                 __swab64s(&mti->mti_nids[i]);
1920 }
1921 EXPORT_SYMBOL(lustre_swab_mgs_target_info);
1922
1923 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1924 {
1925         __u8 i;
1926
1927         __swab64s(&entry->mne_version);
1928         __swab32s(&entry->mne_instance);
1929         __swab32s(&entry->mne_index);
1930         __swab32s(&entry->mne_length);
1931
1932         /* mne_nid_(count|type) must be one byte size because we're gonna
1933          * access it w/o swapping. */
1934         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1935         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1936
1937         /* remove this assertion if ipv6 is supported. */
1938         LASSERT(entry->mne_nid_type == 0);
1939         for (i = 0; i < entry->mne_nid_count; i++) {
1940                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1941                 __swab64s(&entry->u.nids[i]);
1942         }
1943 }
1944 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1945
1946 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1947 {
1948         __swab64s(&body->mcb_offset);
1949         __swab32s(&body->mcb_units);
1950         __swab16s(&body->mcb_type);
1951 }
1952 EXPORT_SYMBOL(lustre_swab_mgs_config_body);
1953
1954 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1955 {
1956         __swab64s(&body->mcr_offset);
1957         __swab64s(&body->mcr_size);
1958 }
1959 EXPORT_SYMBOL(lustre_swab_mgs_config_res);
1960
1961 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1962 {
1963         __swab64s (&i->dqi_bgrace);
1964         __swab64s (&i->dqi_igrace);
1965         __swab32s (&i->dqi_flags);
1966         __swab32s (&i->dqi_valid);
1967 }
1968
1969 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1970 {
1971         __swab64s (&b->dqb_ihardlimit);
1972         __swab64s (&b->dqb_isoftlimit);
1973         __swab64s (&b->dqb_curinodes);
1974         __swab64s (&b->dqb_bhardlimit);
1975         __swab64s (&b->dqb_bsoftlimit);
1976         __swab64s (&b->dqb_curspace);
1977         __swab64s (&b->dqb_btime);
1978         __swab64s (&b->dqb_itime);
1979         __swab32s (&b->dqb_valid);
1980         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1981 }
1982
1983 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1984 {
1985         __swab32s (&q->qc_cmd);
1986         __swab32s (&q->qc_type);
1987         __swab32s (&q->qc_id);
1988         __swab32s (&q->qc_stat);
1989         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1990         lustre_swab_obd_dqblk (&q->qc_dqblk);
1991 }
1992 EXPORT_SYMBOL(lustre_swab_obd_quotactl);
1993
1994 void lustre_swab_mdt_remote_perm (struct mdt_remote_perm *p)
1995 {
1996         __swab32s (&p->rp_uid);
1997         __swab32s (&p->rp_gid);
1998         __swab32s (&p->rp_fsuid);
1999         __swab32s (&p->rp_fsuid_h);
2000         __swab32s (&p->rp_fsgid);
2001         __swab32s (&p->rp_fsgid_h);
2002         __swab32s (&p->rp_access_perm);
2003         __swab32s (&p->rp_padding);
2004 };
2005 EXPORT_SYMBOL(lustre_swab_mdt_remote_perm);
2006
2007 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2008 {
2009         lustre_swab_lu_fid(&gf->gf_fid);
2010         __swab64s(&gf->gf_recno);
2011         __swab32s(&gf->gf_linkno);
2012         __swab32s(&gf->gf_pathlen);
2013 }
2014 EXPORT_SYMBOL(lustre_swab_fid2path);
2015
2016 static void lustre_swab_fiemap_extent(struct ll_fiemap_extent *fm_extent)
2017 {
2018         __swab64s(&fm_extent->fe_logical);
2019         __swab64s(&fm_extent->fe_physical);
2020         __swab64s(&fm_extent->fe_length);
2021         __swab32s(&fm_extent->fe_flags);
2022         __swab32s(&fm_extent->fe_device);
2023 }
2024
2025 void lustre_swab_fiemap(struct ll_user_fiemap *fiemap)
2026 {
2027         __u32 i;
2028
2029         __swab64s(&fiemap->fm_start);
2030         __swab64s(&fiemap->fm_length);
2031         __swab32s(&fiemap->fm_flags);
2032         __swab32s(&fiemap->fm_mapped_extents);
2033         __swab32s(&fiemap->fm_extent_count);
2034         __swab32s(&fiemap->fm_reserved);
2035
2036         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2037                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2038 }
2039 EXPORT_SYMBOL(lustre_swab_fiemap);
2040
2041 void lustre_swab_idx_info(struct idx_info *ii)
2042 {
2043         __swab32s(&ii->ii_magic);
2044         __swab32s(&ii->ii_flags);
2045         __swab16s(&ii->ii_count);
2046         __swab32s(&ii->ii_attrs);
2047         lustre_swab_lu_fid(&ii->ii_fid);
2048         __swab64s(&ii->ii_version);
2049         __swab64s(&ii->ii_hash_start);
2050         __swab64s(&ii->ii_hash_end);
2051         __swab16s(&ii->ii_keysize);
2052         __swab16s(&ii->ii_recsize);
2053 }
2054
2055 void lustre_swab_lip_header(struct lu_idxpage *lip)
2056 {
2057         /* swab header */
2058         __swab32s(&lip->lip_magic);
2059         __swab16s(&lip->lip_flags);
2060         __swab16s(&lip->lip_nr);
2061 }
2062 EXPORT_SYMBOL(lustre_swab_lip_header);
2063
2064 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2065 {
2066         __swab32s(&rr->rr_opcode);
2067         __swab32s(&rr->rr_cap);
2068         __swab32s(&rr->rr_fsuid);
2069         /* rr_fsuid_h is unused */
2070         __swab32s(&rr->rr_fsgid);
2071         /* rr_fsgid_h is unused */
2072         __swab32s(&rr->rr_suppgid1);
2073         /* rr_suppgid1_h is unused */
2074         __swab32s(&rr->rr_suppgid2);
2075         /* rr_suppgid2_h is unused */
2076         lustre_swab_lu_fid(&rr->rr_fid1);
2077         lustre_swab_lu_fid(&rr->rr_fid2);
2078         __swab64s(&rr->rr_mtime);
2079         __swab64s(&rr->rr_atime);
2080         __swab64s(&rr->rr_ctime);
2081         __swab64s(&rr->rr_size);
2082         __swab64s(&rr->rr_blocks);
2083         __swab32s(&rr->rr_bias);
2084         __swab32s(&rr->rr_mode);
2085         __swab32s(&rr->rr_flags);
2086         __swab32s(&rr->rr_flags_h);
2087         __swab32s(&rr->rr_umask);
2088
2089         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2090 };
2091 EXPORT_SYMBOL(lustre_swab_mdt_rec_reint);
2092
2093 void lustre_swab_lov_desc (struct lov_desc *ld)
2094 {
2095         __swab32s (&ld->ld_tgt_count);
2096         __swab32s (&ld->ld_active_tgt_count);
2097         __swab32s (&ld->ld_default_stripe_count);
2098         __swab32s (&ld->ld_pattern);
2099         __swab64s (&ld->ld_default_stripe_size);
2100         __swab64s (&ld->ld_default_stripe_offset);
2101         __swab32s (&ld->ld_qos_maxage);
2102         /* uuid endian insensitive */
2103 }
2104 EXPORT_SYMBOL(lustre_swab_lov_desc);
2105
2106 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2107 {
2108         __swab32s (&ld->ld_tgt_count);
2109         __swab32s (&ld->ld_active_tgt_count);
2110         __swab32s (&ld->ld_default_stripe_count);
2111         __swab32s (&ld->ld_pattern);
2112         __swab64s (&ld->ld_default_hash_size);
2113         __swab32s (&ld->ld_qos_maxage);
2114         /* uuid endian insensitive */
2115 }
2116
2117 /* This structure is always in little-endian */
2118 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2119 {
2120         int i;
2121
2122         __swab32s(&lmm1->lmv_magic);
2123         __swab32s(&lmm1->lmv_stripe_count);
2124         __swab32s(&lmm1->lmv_master_mdt_index);
2125         __swab32s(&lmm1->lmv_hash_type);
2126         __swab32s(&lmm1->lmv_layout_version);
2127         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2128                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2129 }
2130
2131 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2132 {
2133         switch (lmm->lmv_magic) {
2134         case LMV_MAGIC_V1:
2135                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2136                 break;
2137         default:
2138                 break;
2139         }
2140 }
2141 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2142
2143 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2144 {
2145         __swab32s(&lum->lum_magic);
2146         __swab32s(&lum->lum_stripe_count);
2147         __swab32s(&lum->lum_stripe_offset);
2148         __swab32s(&lum->lum_hash_type);
2149         __swab32s(&lum->lum_type);
2150         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2151 }
2152 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2153
2154 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2155                           const char *msg)
2156 {
2157         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2158                 return;
2159
2160         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2161         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2162         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2163         CDEBUG(lvl, "\tlmm_object_id: "LPU64"\n", lmm_oi_id(&lum->lmm_oi));
2164         CDEBUG(lvl, "\tlmm_object_gr: "LPU64"\n", lmm_oi_seq(&lum->lmm_oi));
2165         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2166         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2167         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2168                lum->lmm_stripe_offset);
2169         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2170                 struct lov_user_md_v3 *v3 = (void *)lum;
2171                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2172         }
2173         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2174                 struct lov_user_md_v3 *v3 = (void *)lum;
2175                 int i;
2176
2177                 if (v3->lmm_pool_name[0] != '\0')
2178                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2179
2180                 CDEBUG(lvl, "\ttarget list:\n");
2181                 for (i = 0; i < v3->lmm_stripe_count; i++)
2182                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2183         }
2184 }
2185 EXPORT_SYMBOL(lustre_print_user_md);
2186
2187 static void lustre_swab_lmm_oi(struct ost_id *oi)
2188 {
2189         __swab64s(&oi->oi.oi_id);
2190         __swab64s(&oi->oi.oi_seq);
2191 }
2192
2193 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2194 {
2195         ENTRY;
2196         __swab32s(&lum->lmm_magic);
2197         __swab32s(&lum->lmm_pattern);
2198         lustre_swab_lmm_oi(&lum->lmm_oi);
2199         __swab32s(&lum->lmm_stripe_size);
2200         __swab16s(&lum->lmm_stripe_count);
2201         __swab16s(&lum->lmm_stripe_offset);
2202         EXIT;
2203 }
2204
2205 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2206 {
2207         ENTRY;
2208         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2209         lustre_swab_lov_user_md_common(lum);
2210         EXIT;
2211 }
2212 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2213
2214 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2215 {
2216         ENTRY;
2217         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2218         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2219         /* lmm_pool_name nothing to do with char */
2220         EXIT;
2221 }
2222 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2223
2224 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2225 {
2226         ENTRY;
2227         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2228         __swab32s(&lmm->lmm_magic);
2229         __swab32s(&lmm->lmm_pattern);
2230         lustre_swab_lmm_oi(&lmm->lmm_oi);
2231         __swab32s(&lmm->lmm_stripe_size);
2232         __swab16s(&lmm->lmm_stripe_count);
2233         __swab16s(&lmm->lmm_layout_gen);
2234         EXIT;
2235 }
2236 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2237
2238 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2239                                      int stripe_count)
2240 {
2241         int i;
2242         ENTRY;
2243         for (i = 0; i < stripe_count; i++) {
2244                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2245                 __swab32s(&(lod[i].l_ost_gen));
2246                 __swab32s(&(lod[i].l_ost_idx));
2247         }
2248         EXIT;
2249 }
2250 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2251
2252 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2253 {
2254         int  i;
2255
2256         for (i = 0; i < RES_NAME_SIZE; i++)
2257                 __swab64s (&id->name[i]);
2258 }
2259 EXPORT_SYMBOL(lustre_swab_ldlm_res_id);
2260
2261 void lustre_swab_ldlm_policy_data (ldlm_wire_policy_data_t *d)
2262 {
2263         /* the lock data is a union and the first two fields are always an
2264          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2265          * data the same way. */
2266         __swab64s(&d->l_extent.start);
2267         __swab64s(&d->l_extent.end);
2268         __swab64s(&d->l_extent.gid);
2269         __swab64s(&d->l_flock.lfw_owner);
2270         __swab32s(&d->l_flock.lfw_pid);
2271 }
2272 EXPORT_SYMBOL(lustre_swab_ldlm_policy_data);
2273
2274 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2275 {
2276         __swab64s (&i->opc);
2277 }
2278 EXPORT_SYMBOL(lustre_swab_ldlm_intent);
2279
2280 void lustre_swab_ldlm_resource_desc (struct ldlm_resource_desc *r)
2281 {
2282         __swab32s (&r->lr_type);
2283         CLASSERT(offsetof(typeof(*r), lr_padding) != 0);
2284         lustre_swab_ldlm_res_id (&r->lr_name);
2285 }
2286 EXPORT_SYMBOL(lustre_swab_ldlm_resource_desc);
2287
2288 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2289 {
2290         lustre_swab_ldlm_resource_desc (&l->l_resource);
2291         __swab32s (&l->l_req_mode);
2292         __swab32s (&l->l_granted_mode);
2293         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2294 }
2295 EXPORT_SYMBOL(lustre_swab_ldlm_lock_desc);
2296
2297 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2298 {
2299         __swab32s (&rq->lock_flags);
2300         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2301         __swab32s (&rq->lock_count);
2302         /* lock_handle[] opaque */
2303 }
2304 EXPORT_SYMBOL(lustre_swab_ldlm_request);
2305
2306 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2307 {
2308         __swab32s (&r->lock_flags);
2309         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2310         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2311         /* lock_handle opaque */
2312         __swab64s (&r->lock_policy_res1);
2313         __swab64s (&r->lock_policy_res2);
2314 }
2315 EXPORT_SYMBOL(lustre_swab_ldlm_reply);
2316
2317 void lustre_swab_quota_body(struct quota_body *b)
2318 {
2319         lustre_swab_lu_fid(&b->qb_fid);
2320         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2321         __swab32s(&b->qb_flags);
2322         __swab64s(&b->qb_count);
2323         __swab64s(&b->qb_usage);
2324         __swab64s(&b->qb_slv_ver);
2325 }
2326
2327 /* Dump functions */
2328 void dump_ioo(struct obd_ioobj *ioo)
2329 {
2330         CDEBUG(D_RPCTRACE,
2331                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2332                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2333                ioo->ioo_bufcnt);
2334 }
2335 EXPORT_SYMBOL(dump_ioo);
2336
2337 void dump_rniobuf(struct niobuf_remote *nb)
2338 {
2339         CDEBUG(D_RPCTRACE, "niobuf_remote: offset="LPU64", len=%d, flags=%x\n",
2340                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2341 }
2342 EXPORT_SYMBOL(dump_rniobuf);
2343
2344 void dump_obdo(struct obdo *oa)
2345 {
2346         __u32 valid = oa->o_valid;
2347
2348         CDEBUG(D_RPCTRACE, "obdo: o_valid = %08x\n", valid);
2349         if (valid & OBD_MD_FLID)
2350                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2351         if (valid & OBD_MD_FLFID)
2352                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = "LPX64"\n",
2353                        oa->o_parent_seq);
2354         if (valid & OBD_MD_FLSIZE)
2355                 CDEBUG(D_RPCTRACE, "obdo: o_size = "LPD64"\n", oa->o_size);
2356         if (valid & OBD_MD_FLMTIME)
2357                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = "LPD64"\n", oa->o_mtime);
2358         if (valid & OBD_MD_FLATIME)
2359                 CDEBUG(D_RPCTRACE, "obdo: o_atime = "LPD64"\n", oa->o_atime);
2360         if (valid & OBD_MD_FLCTIME)
2361                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = "LPD64"\n", oa->o_ctime);
2362         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2363                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = "LPD64"\n", oa->o_blocks);
2364         if (valid & OBD_MD_FLGRANT)
2365                 CDEBUG(D_RPCTRACE, "obdo: o_grant = "LPD64"\n", oa->o_grant);
2366         if (valid & OBD_MD_FLBLKSZ)
2367                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2368         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2369                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2370                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2371                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2372         if (valid & OBD_MD_FLUID)
2373                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2374         if (valid & OBD_MD_FLUID)
2375                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2376         if (valid & OBD_MD_FLGID)
2377                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2378         if (valid & OBD_MD_FLGID)
2379                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2380         if (valid & OBD_MD_FLFLAGS)
2381                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2382         if (valid & OBD_MD_FLNLINK)
2383                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2384         else if (valid & OBD_MD_FLCKSUM)
2385                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2386                        oa->o_nlink);
2387         if (valid & OBD_MD_FLGENER)
2388                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2389                        oa->o_parent_oid);
2390         if (valid & OBD_MD_FLEPOCH)
2391                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = "LPD64"\n",
2392                        oa->o_ioepoch);
2393         if (valid & OBD_MD_FLFID) {
2394                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2395                        oa->o_stripe_idx);
2396                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2397                        oa->o_parent_ver);
2398         }
2399         if (valid & OBD_MD_FLHANDLE)
2400                 CDEBUG(D_RPCTRACE, "obdo: o_handle = "LPD64"\n",
2401                        oa->o_handle.cookie);
2402         if (valid & OBD_MD_FLCOOKIE)
2403                 CDEBUG(D_RPCTRACE, "obdo: o_lcookie = "
2404                        "(llog_cookie dumping not yet implemented)\n");
2405 }
2406 EXPORT_SYMBOL(dump_obdo);
2407
2408 void dump_ost_body(struct ost_body *ob)
2409 {
2410         dump_obdo(&ob->oa);
2411 }
2412 EXPORT_SYMBOL(dump_ost_body);
2413
2414 void dump_rcs(__u32 *rc)
2415 {
2416         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2417 }
2418 EXPORT_SYMBOL(dump_rcs);
2419
2420 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2421 {
2422         LASSERT(req->rq_reqmsg);
2423
2424         switch (req->rq_reqmsg->lm_magic) {
2425         case LUSTRE_MSG_MAGIC_V2:
2426                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2427         default:
2428                 CERROR("bad lustre msg magic: %#08X\n",
2429                        req->rq_reqmsg->lm_magic);
2430         }
2431         return 0;
2432 }
2433
2434 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2435 {
2436         LASSERT(req->rq_repmsg);
2437
2438         switch (req->rq_repmsg->lm_magic) {
2439         case LUSTRE_MSG_MAGIC_V2:
2440                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2441         default:
2442                 /* uninitialized yet */
2443                 return 0;
2444         }
2445 }
2446
2447 void _debug_req(struct ptlrpc_request *req,
2448                 struct libcfs_debug_msg_data *msgdata,
2449                 const char *fmt, ... )
2450 {
2451         int req_ok = req->rq_reqmsg != NULL;
2452         int rep_ok = req->rq_repmsg != NULL;
2453         lnet_nid_t nid = LNET_NID_ANY;
2454         va_list args;
2455
2456         if (ptlrpc_req_need_swab(req)) {
2457                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2458                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2459         }
2460
2461         if (req->rq_import && req->rq_import->imp_connection)
2462                 nid = req->rq_import->imp_connection->c_peer.nid;
2463         else if (req->rq_export && req->rq_export->exp_connection)
2464                 nid = req->rq_export->exp_connection->c_peer.nid;
2465
2466         va_start(args, fmt);
2467         libcfs_debug_vmsg2(msgdata, fmt, args,
2468                            " req@%p x"LPU64"/t"LPD64"("LPD64") o%d->%s@%s:%d/%d"
2469                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2470                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2471                            req, req->rq_xid, req->rq_transno,
2472                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2473                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2474                            req->rq_import ?
2475                                 req->rq_import->imp_obd->obd_name :
2476                                 req->rq_export ?
2477                                         req->rq_export->exp_client_uuid.uuid :
2478                                         "<?>",
2479                            libcfs_nid2str(nid),
2480                            req->rq_request_portal, req->rq_reply_portal,
2481                            req->rq_reqlen, req->rq_replen,
2482                            req->rq_early_count, req->rq_timedout,
2483                            req->rq_deadline,
2484                            atomic_read(&req->rq_refcount),
2485                            DEBUG_REQ_FLAGS(req),
2486                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2487                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2488                            req->rq_status,
2489                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2490         va_end(args);
2491 }
2492 EXPORT_SYMBOL(_debug_req);
2493
2494 void lustre_swab_lustre_capa(struct lustre_capa *c)
2495 {
2496         lustre_swab_lu_fid(&c->lc_fid);
2497         __swab64s (&c->lc_opc);
2498         __swab64s (&c->lc_uid);
2499         __swab64s (&c->lc_gid);
2500         __swab32s (&c->lc_flags);
2501         __swab32s (&c->lc_keyid);
2502         __swab32s (&c->lc_timeout);
2503         __swab32s (&c->lc_expiry);
2504 }
2505 EXPORT_SYMBOL(lustre_swab_lustre_capa);
2506
2507 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2508 {
2509         __swab64s (&k->lk_seq);
2510         __swab32s (&k->lk_keyid);
2511         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2512 }
2513 EXPORT_SYMBOL(lustre_swab_lustre_capa_key);
2514
2515 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2516 {
2517         __swab32s(&state->hus_states);
2518         __swab32s(&state->hus_archive_id);
2519 }
2520 EXPORT_SYMBOL(lustre_swab_hsm_user_state);
2521
2522 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2523 {
2524         __swab32s(&hss->hss_valid);
2525         __swab64s(&hss->hss_setmask);
2526         __swab64s(&hss->hss_clearmask);
2527         __swab32s(&hss->hss_archive_id);
2528 }
2529 EXPORT_SYMBOL(lustre_swab_hsm_state_set);
2530
2531 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2532 {
2533         __swab64s(&extent->offset);
2534         __swab64s(&extent->length);
2535 }
2536
2537 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2538 {
2539         __swab32s(&action->hca_state);
2540         __swab32s(&action->hca_action);
2541         lustre_swab_hsm_extent(&action->hca_location);
2542 }
2543 EXPORT_SYMBOL(lustre_swab_hsm_current_action);
2544
2545 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2546 {
2547         lustre_swab_lu_fid(&hui->hui_fid);
2548         lustre_swab_hsm_extent(&hui->hui_extent);
2549 }
2550 EXPORT_SYMBOL(lustre_swab_hsm_user_item);
2551
2552 void lustre_swab_layout_intent(struct layout_intent *li)
2553 {
2554         __swab32s(&li->li_opc);
2555         __swab32s(&li->li_flags);
2556         __swab64s(&li->li_start);
2557         __swab64s(&li->li_end);
2558 }
2559 EXPORT_SYMBOL(lustre_swab_layout_intent);
2560
2561 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2562 {
2563         lustre_swab_lu_fid(&hpk->hpk_fid);
2564         __swab64s(&hpk->hpk_cookie);
2565         __swab64s(&hpk->hpk_extent.offset);
2566         __swab64s(&hpk->hpk_extent.length);
2567         __swab16s(&hpk->hpk_flags);
2568         __swab16s(&hpk->hpk_errval);
2569 }
2570 EXPORT_SYMBOL(lustre_swab_hsm_progress_kernel);
2571
2572 void lustre_swab_hsm_request(struct hsm_request *hr)
2573 {
2574         __swab32s(&hr->hr_action);
2575         __swab32s(&hr->hr_archive_id);
2576         __swab64s(&hr->hr_flags);
2577         __swab32s(&hr->hr_itemcount);
2578         __swab32s(&hr->hr_data_len);
2579 }
2580 EXPORT_SYMBOL(lustre_swab_hsm_request);
2581
2582 void lustre_swab_object_update(struct object_update *ou)
2583 {
2584         struct object_update_param *param;
2585         size_t  i;
2586
2587         __swab16s(&ou->ou_type);
2588         __swab16s(&ou->ou_params_count);
2589         __swab32s(&ou->ou_master_index);
2590         __swab32s(&ou->ou_flags);
2591         __swab32s(&ou->ou_padding1);
2592         __swab64s(&ou->ou_batchid);
2593         lustre_swab_lu_fid(&ou->ou_fid);
2594         param = &ou->ou_params[0];
2595         for (i = 0; i < ou->ou_params_count; i++) {
2596                 __swab16s(&param->oup_len);
2597                 __swab16s(&param->oup_padding);
2598                 __swab32s(&param->oup_padding2);
2599                 param = (struct object_update_param *)((char *)param +
2600                          object_update_param_size(param));
2601         }
2602 }
2603 EXPORT_SYMBOL(lustre_swab_object_update);
2604
2605 void lustre_swab_object_update_request(struct object_update_request *our)
2606 {
2607         size_t i;
2608         __swab32s(&our->ourq_magic);
2609         __swab16s(&our->ourq_count);
2610         __swab16s(&our->ourq_padding);
2611         for (i = 0; i < our->ourq_count; i++) {
2612                 struct object_update *ou;
2613
2614                 ou = object_update_request_get(our, i, NULL);
2615                 if (ou == NULL)
2616                         return;
2617                 lustre_swab_object_update(ou);
2618         }
2619 }
2620 EXPORT_SYMBOL(lustre_swab_object_update_request);
2621
2622 void lustre_swab_object_update_result(struct object_update_result *our)
2623 {
2624         __swab32s(&our->our_rc);
2625         __swab16s(&our->our_datalen);
2626         __swab16s(&our->our_padding);
2627 }
2628 EXPORT_SYMBOL(lustre_swab_object_update_result);
2629
2630 void lustre_swab_object_update_reply(struct object_update_reply *our)
2631 {
2632         size_t i;
2633
2634         __swab32s(&our->ourp_magic);
2635         __swab16s(&our->ourp_count);
2636         __swab16s(&our->ourp_padding);
2637         for (i = 0; i < our->ourp_count; i++) {
2638                 struct object_update_result *ourp;
2639
2640                 __swab16s(&our->ourp_lens[i]);
2641                 ourp = object_update_result_get(our, i, NULL);
2642                 if (ourp == NULL)
2643                         return;
2644                 lustre_swab_object_update_result(ourp);
2645         }
2646 }
2647 EXPORT_SYMBOL(lustre_swab_object_update_reply);
2648
2649 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2650 {
2651         __swab64s(&msl->msl_flags);
2652 }
2653 EXPORT_SYMBOL(lustre_swab_swap_layouts);
2654
2655 void lustre_swab_close_data(struct close_data *cd)
2656 {
2657         lustre_swab_lu_fid(&cd->cd_fid);
2658         __swab64s(&cd->cd_data_version);
2659 }
2660 EXPORT_SYMBOL(lustre_swab_close_data);
2661
2662 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2663 {
2664         __swab32s(&lr->lr_event);
2665         __swab32s(&lr->lr_index);
2666         __swab32s(&lr->lr_flags);
2667         __swab32s(&lr->lr_valid);
2668         __swab32s(&lr->lr_speed);
2669         __swab16s(&lr->lr_version);
2670         __swab16s(&lr->lr_active);
2671         __swab16s(&lr->lr_param);
2672         __swab16s(&lr->lr_async_windows);
2673         __swab32s(&lr->lr_flags);
2674         lustre_swab_lu_fid(&lr->lr_fid);
2675         lustre_swab_lu_fid(&lr->lr_fid2);
2676         lustre_swab_lu_fid(&lr->lr_fid3);
2677         __swab32s(&lr->lr_stripe_count);
2678         __swab32s(&lr->lr_hash_type);
2679         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2680 }
2681 EXPORT_SYMBOL(lustre_swab_lfsck_request);
2682
2683 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2684 {
2685         __swab32s(&lr->lr_status);
2686         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2687         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2688 }
2689 EXPORT_SYMBOL(lustre_swab_lfsck_reply);
2690
2691 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2692 {
2693         lustre_swab_lu_fid(&ent->loe_key);
2694         lustre_swab_lu_fid(&ent->loe_rec.lor_fid);
2695         __swab32s(&ent->loe_rec.lor_uid);
2696         __swab32s(&ent->loe_rec.lor_gid);
2697 }
2698 EXPORT_SYMBOL(lustre_swab_orphan_ent);