lustre/ptlrpc/pack_generic.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2016, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/ptlrpc/pack_generic.c
  33  *
  34  * (Un)packing of OST requests
  35  *
  36  * Author: Peter J. Braam <braam@clusterfs.com>
  37  * Author: Phil Schwan <phil@clusterfs.com>
  38  * Author: Eric Barton <eeb@clusterfs.com>
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_RPC
  42
  43 #include <libcfs/libcfs.h>
  44
  45 #include <lustre/ll_fiemap.h>
  46
  47 #include <llog_swab.h>
  48 #include <lustre_net.h>
  49 #include <lustre_swab.h>
  50 #include <obd_cksum.h>
  51 #include <obd_class.h>
  52 #include <obd_support.h>
  53 #include <obj_update.h>
  54
  55 #include "ptlrpc_internal.h"
  56
  57 static inline __u32 lustre_msg_hdr_size_v2(__u32 count)
  58 {
  59         return cfs_size_round(offsetof(struct lustre_msg_v2,
  60                                        lm_buflens[count]));
  61 }
  62
  63 __u32 lustre_msg_hdr_size(__u32 magic, __u32 count)
  64 {
  65         switch (magic) {
  66         case LUSTRE_MSG_MAGIC_V2:
  67                 return lustre_msg_hdr_size_v2(count);
  68         default:
  69                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  70                 return 0;
  71         }
  72 }
  73
  74 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  75                             __u32 index)
  76 {
  77         if (inout)
  78                 lustre_set_req_swabbed(req, index);
  79         else
  80                 lustre_set_rep_swabbed(req, index);
  81 }
  82
  83 int ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  84                          __u32 index)
  85 {
  86         if (inout)
  87                 return (ptlrpc_req_need_swab(req) &&
  88                         !lustre_req_swabbed(req, index));
  89         else
  90                 return (ptlrpc_rep_need_swab(req) &&
  91                         !lustre_rep_swabbed(req, index));
  92 }
  93
  94 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  95                                                 __u32 version)
  96 {
  97         __u32 ver = lustre_msg_get_version(msg);
  98         return (ver & LUSTRE_VERSION_MASK) != version;
  99 }
 100
 101 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version)
 102 {
 103 #define LUSTRE_MSG_MAGIC_V1 0x0BD00BD0
 104         switch (msg->lm_magic) {
 105         case LUSTRE_MSG_MAGIC_V1:
 106                 CERROR("msg v1 not supported - please upgrade you system\n");
 107                 return -EINVAL;
 108         case LUSTRE_MSG_MAGIC_V2:
 109                 return lustre_msg_check_version_v2(msg, version);
 110         default:
 111                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 112                 return -EPROTO;
 113         }
 114 #undef LUSTRE_MSG_MAGIC_V1
 115 }
 116
 117 /* early reply size */
 118 __u32 lustre_msg_early_size()
 119 {
 120         static __u32 size;
 121         if (!size) {
 122                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 123                  * with the old client (< 2.3) which doesn't have pb_jobid
 124                  * in the ptlrpc_body.
 125                  *
 126                  * XXX Remove this whenever we dorp interoprability with such
 127                  *     client.
 128                  */
 129                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 130                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 131         }
 132         return size;
 133 }
 134 EXPORT_SYMBOL(lustre_msg_early_size);
 135
 136 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
 137 {
 138         __u32 size;
 139         int i;
 140
 141         size = lustre_msg_hdr_size_v2(count);
 142         for (i = 0; i < count; i++)
 143                 size += cfs_size_round(lengths[i]);
 144
 145         return size;
 146 }
 147 EXPORT_SYMBOL(lustre_msg_size_v2);
 148
 149 /* This returns the size of the buffer that is required to hold a lustre_msg
 150  * with the given sub-buffer lengths.
 151  * NOTE: this should only be used for NEW requests, and should always be
 152  *       in the form of a v2 request.  If this is a connection to a v1
 153  *       target then the first buffer will be stripped because the ptlrpc
 154  *       data is part of the lustre_msg_v1 header. b=14043 */
 155 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 156 {
 157         __u32 size[] = { sizeof(struct ptlrpc_body) };
 158
 159         if (!lens) {
 160                 LASSERT(count == 1);
 161                 lens = size;
 162         }
 163
 164         LASSERT(count > 0);
 165         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 166
 167         switch (magic) {
 168         case LUSTRE_MSG_MAGIC_V2:
 169                 return lustre_msg_size_v2(count, lens);
 170         default:
 171                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 172                 return 0;
 173         }
 174 }
 175
 176 /* This is used to determine the size of a buffer that was already packed
 177  * and will correctly handle the different message formats. */
 178 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 179 {
 180         switch (msg->lm_magic) {
 181         case LUSTRE_MSG_MAGIC_V2:
 182                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 183         default:
 184                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 185                 return 0;
 186         }
 187 }
 188
 189 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 190                         char **bufs)
 191 {
 192         char *ptr;
 193         int i;
 194
 195         msg->lm_bufcount = count;
 196         /* XXX: lm_secflvr uninitialized here */
 197         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 198
 199         for (i = 0; i < count; i++)
 200                 msg->lm_buflens[i] = lens[i];
 201
 202         if (bufs == NULL)
 203                 return;
 204
 205         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 206         for (i = 0; i < count; i++) {
 207                 char *tmp = bufs[i];
 208
 209                 if (tmp)
 210                         memcpy(ptr, tmp, lens[i]);
 211                 ptr += cfs_size_round(lens[i]);
 212         }
 213 }
 214 EXPORT_SYMBOL(lustre_init_msg_v2);
 215
 216 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 217                                   int count, __u32 *lens, char **bufs)
 218 {
 219         int reqlen, rc;
 220
 221         reqlen = lustre_msg_size_v2(count, lens);
 222
 223         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 224         if (rc)
 225                 return rc;
 226
 227         req->rq_reqlen = reqlen;
 228
 229         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 230         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 231         return 0;
 232 }
 233
 234 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 235                         __u32 *lens, char **bufs)
 236 {
 237         __u32 size[] = { sizeof(struct ptlrpc_body) };
 238
 239         if (!lens) {
 240                 LASSERT(count == 1);
 241                 lens = size;
 242         }
 243
 244         LASSERT(count > 0);
 245         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 246
 247         /* only use new format, we don't need to be compatible with 1.4 */
 248         magic = LUSTRE_MSG_MAGIC_V2;
 249
 250         switch (magic) {
 251         case LUSTRE_MSG_MAGIC_V2:
 252                 return lustre_pack_request_v2(req, count, lens, bufs);
 253         default:
 254                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 255                 return -EINVAL;
 256         }
 257 }
 258
 259 #if RS_DEBUG
 260 struct list_head ptlrpc_rs_debug_lru =
 261         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 262 spinlock_t ptlrpc_rs_debug_lock;
 263
 264 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 265 do {                                                                    \
 266         spin_lock(&ptlrpc_rs_debug_lock);                               \
 267         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 268         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 269 } while (0)
 270
 271 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 272 do {                                                                    \
 273         spin_lock(&ptlrpc_rs_debug_lock);                               \
 274         list_del(&(rs)->rs_debug_list);                         \
 275         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 276 } while (0)
 277 #else
 278 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 279 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 280 #endif
 281
 282 struct ptlrpc_reply_state *
 283 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 284 {
 285         struct ptlrpc_reply_state *rs = NULL;
 286
 287         spin_lock(&svcpt->scp_rep_lock);
 288
 289         /* See if we have anything in a pool, and wait if nothing */
 290         while (list_empty(&svcpt->scp_rep_idle)) {
 291                 struct l_wait_info      lwi;
 292                 int                     rc;
 293
 294                 spin_unlock(&svcpt->scp_rep_lock);
 295                 /* If we cannot get anything for some long time, we better
 296                  * bail out instead of waiting infinitely */
 297                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 298                 rc = l_wait_event(svcpt->scp_rep_waitq,
 299                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 300                 if (rc != 0)
 301                         goto out;
 302                 spin_lock(&svcpt->scp_rep_lock);
 303         }
 304
 305         rs = list_entry(svcpt->scp_rep_idle.next,
 306                             struct ptlrpc_reply_state, rs_list);
 307         list_del(&rs->rs_list);
 308
 309         spin_unlock(&svcpt->scp_rep_lock);
 310
 311         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 312         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 313         rs->rs_svcpt = svcpt;
 314         rs->rs_prealloc = 1;
 315 out:
 316         return rs;
 317 }
 318
 319 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 320 {
 321         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 322
 323         spin_lock(&svcpt->scp_rep_lock);
 324         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 325         spin_unlock(&svcpt->scp_rep_lock);
 326         wake_up(&svcpt->scp_rep_waitq);
 327 }
 328
 329 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 330                          __u32 *lens, char **bufs, int flags)
 331 {
 332         struct ptlrpc_reply_state *rs;
 333         int                        msg_len, rc;
 334         ENTRY;
 335
 336         LASSERT(req->rq_reply_state == NULL);
 337
 338         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 339                 spin_lock(&req->rq_lock);
 340                 req->rq_packed_final = 1;
 341                 spin_unlock(&req->rq_lock);
 342         }
 343
 344         msg_len = lustre_msg_size_v2(count, lens);
 345         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 346         if (rc)
 347                 RETURN(rc);
 348
 349         rs = req->rq_reply_state;
 350         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 351         rs->rs_cb_id.cbid_fn = reply_out_callback;
 352         rs->rs_cb_id.cbid_arg = rs;
 353         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 354         INIT_LIST_HEAD(&rs->rs_exp_list);
 355         INIT_LIST_HEAD(&rs->rs_obd_list);
 356         INIT_LIST_HEAD(&rs->rs_list);
 357         spin_lock_init(&rs->rs_lock);
 358
 359         req->rq_replen = msg_len;
 360         req->rq_reply_state = rs;
 361         req->rq_repmsg = rs->rs_msg;
 362
 363         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 364         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 365
 366         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 367
 368         RETURN(0);
 369 }
 370 EXPORT_SYMBOL(lustre_pack_reply_v2);
 371
 372 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 373                             char **bufs, int flags)
 374 {
 375         int rc = 0;
 376         __u32 size[] = { sizeof(struct ptlrpc_body) };
 377
 378         if (!lens) {
 379                 LASSERT(count == 1);
 380                 lens = size;
 381         }
 382
 383         LASSERT(count > 0);
 384         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 385
 386         switch (req->rq_reqmsg->lm_magic) {
 387         case LUSTRE_MSG_MAGIC_V2:
 388                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 389                 break;
 390         default:
 391                 LASSERTF(0, "incorrect message magic: %08x\n",
 392                          req->rq_reqmsg->lm_magic);
 393                 rc = -EINVAL;
 394         }
 395         if (rc != 0)
 396                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 397                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 398         return rc;
 399 }
 400
 401 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 402                       char **bufs)
 403 {
 404         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 405 }
 406 EXPORT_SYMBOL(lustre_pack_reply);
 407
 408 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
 409 {
 410         __u32 i, offset, buflen, bufcount;
 411
 412         LASSERT(m != NULL);
 413
 414         bufcount = m->lm_bufcount;
 415         if (unlikely(n >= bufcount)) {
 416                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 417                        m, n, bufcount);
 418                 return NULL;
 419         }
 420
 421         buflen = m->lm_buflens[n];
 422         if (unlikely(buflen < min_size)) {
 423                 CERROR("msg %p buffer[%d] size %d too small "
 424                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 425                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 426                 return NULL;
 427         }
 428
 429         offset = lustre_msg_hdr_size_v2(bufcount);
 430         for (i = 0; i < n; i++)
 431                 offset += cfs_size_round(m->lm_buflens[i]);
 432
 433         return (char *)m + offset;
 434 }
 435
 436 void *lustre_msg_buf(struct lustre_msg *m, __u32 n, __u32 min_size)
 437 {
 438         switch (m->lm_magic) {
 439         case LUSTRE_MSG_MAGIC_V2:
 440                 return lustre_msg_buf_v2(m, n, min_size);
 441         default:
 442                 LASSERTF(0, "incorrect message magic: %08x (msg:%p)\n",
 443                          m->lm_magic, m);
 444                 return NULL;
 445         }
 446 }
 447 EXPORT_SYMBOL(lustre_msg_buf);
 448
 449 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 450                                 unsigned int newlen, int move_data)
 451 {
 452         char   *tail = NULL, *newpos;
 453         int     tail_len = 0, n;
 454
 455         LASSERT(msg);
 456         LASSERT(msg->lm_bufcount > segment);
 457         LASSERT(msg->lm_buflens[segment] >= newlen);
 458
 459         if (msg->lm_buflens[segment] == newlen)
 460                 goto out;
 461
 462         if (move_data && msg->lm_bufcount > segment + 1) {
 463                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 464                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 465                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 466         }
 467
 468         msg->lm_buflens[segment] = newlen;
 469
 470         if (tail && tail_len) {
 471                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 472                 LASSERT(newpos <= tail);
 473                 if (newpos != tail)
 474                         memmove(newpos, tail, tail_len);
 475         }
 476 out:
 477         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 478 }
 479
 480 /*
 481  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 482  * we also move data forward from @segment + 1.
 483  *
 484  * if @newlen == 0, we remove the segment completely, but we still keep the
 485  * totally bufcount the same to save possible data moving. this will leave a
 486  * unused segment with size 0 at the tail, but that's ok.
 487  *
 488  * return new msg size after shrinking.
 489  *
 490  * CAUTION:
 491  * + if any buffers higher than @segment has been filled in, must call shrink
 492  *   with non-zero @move_data.
 493  * + caller should NOT keep pointers to msg buffers which higher than @segment
 494  *   after call shrink.
 495  */
 496 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 497                       unsigned int newlen, int move_data)
 498 {
 499         switch (msg->lm_magic) {
 500         case LUSTRE_MSG_MAGIC_V2:
 501                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 502         default:
 503                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 504         }
 505 }
 506 EXPORT_SYMBOL(lustre_shrink_msg);
 507
 508 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 509 {
 510         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 511
 512         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 513         LASSERT(!rs->rs_difficult || rs->rs_handled);
 514         LASSERT(!rs->rs_on_net);
 515         LASSERT(!rs->rs_scheduled);
 516         LASSERT(rs->rs_export == NULL);
 517         LASSERT(rs->rs_nlocks == 0);
 518         LASSERT(list_empty(&rs->rs_exp_list));
 519         LASSERT(list_empty(&rs->rs_obd_list));
 520
 521         sptlrpc_svc_free_rs(rs);
 522 }
 523
 524 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 525 {
 526         int swabbed, required_len, i;
 527
 528         /* Now we know the sender speaks my language. */
 529         required_len = lustre_msg_hdr_size_v2(0);
 530         if (len < required_len) {
 531                 /* can't even look inside the message */
 532                 CERROR("message length %d too small for lustre_msg\n", len);
 533                 return -EINVAL;
 534         }
 535
 536         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 537
 538         if (swabbed) {
 539                 __swab32s(&m->lm_magic);
 540                 __swab32s(&m->lm_bufcount);
 541                 __swab32s(&m->lm_secflvr);
 542                 __swab32s(&m->lm_repsize);
 543                 __swab32s(&m->lm_cksum);
 544                 __swab32s(&m->lm_flags);
 545                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 546                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 547         }
 548
 549         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 550         if (len < required_len) {
 551                 /* didn't receive all the buffer lengths */
 552                 CERROR ("message length %d too small for %d buflens\n",
 553                         len, m->lm_bufcount);
 554                 return -EINVAL;
 555         }
 556
 557         for (i = 0; i < m->lm_bufcount; i++) {
 558                 if (swabbed)
 559                         __swab32s(&m->lm_buflens[i]);
 560                 required_len += cfs_size_round(m->lm_buflens[i]);
 561         }
 562
 563         if (len < required_len) {
 564                 CERROR("len: %d, required_len %d\n", len, required_len);
 565                 CERROR("bufcount: %d\n", m->lm_bufcount);
 566                 for (i = 0; i < m->lm_bufcount; i++)
 567                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 568                 return -EINVAL;
 569         }
 570
 571         return swabbed;
 572 }
 573
 574 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 575 {
 576         int required_len, rc;
 577         ENTRY;
 578
 579         /* We can provide a slightly better error log, if we check the
 580          * message magic and version first.  In the future, struct
 581          * lustre_msg may grow, and we'd like to log a version mismatch,
 582          * rather than a short message.
 583          *
 584          */
 585         required_len = offsetof(struct lustre_msg, lm_magic) +
 586                        sizeof(m->lm_magic);
 587         if (len < required_len) {
 588                 /* can't even look inside the message */
 589                 CERROR("message length %d too small for magic/version check\n",
 590                        len);
 591                 RETURN(-EINVAL);
 592         }
 593
 594         rc = lustre_unpack_msg_v2(m, len);
 595
 596         RETURN(rc);
 597 }
 598 EXPORT_SYMBOL(__lustre_unpack_msg);
 599
 600 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 601 {
 602         int rc;
 603         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 604         if (rc == 1) {
 605                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 606                 rc = 0;
 607         }
 608         return rc;
 609 }
 610
 611 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 612 {
 613         int rc;
 614         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 615         if (rc == 1) {
 616                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 617                 rc = 0;
 618         }
 619         return rc;
 620 }
 621
 622 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 623                                                const int inout, int offset)
 624 {
 625         struct ptlrpc_body *pb;
 626         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 627
 628         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 629         if (!pb) {
 630                 CERROR("error unpacking ptlrpc body\n");
 631                 return -EFAULT;
 632         }
 633         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 634                 lustre_swab_ptlrpc_body(pb);
 635                 ptlrpc_buf_set_swabbed(req, inout, offset);
 636         }
 637
 638         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 639                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 640                  return -EINVAL;
 641         }
 642
 643         if (!inout)
 644                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 645
 646         return 0;
 647 }
 648
 649 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 650 {
 651         switch (req->rq_reqmsg->lm_magic) {
 652         case LUSTRE_MSG_MAGIC_V2:
 653                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 654         default:
 655                 CERROR("bad lustre msg magic: %08x\n",
 656                        req->rq_reqmsg->lm_magic);
 657                 return -EINVAL;
 658         }
 659 }
 660
 661 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 662 {
 663         switch (req->rq_repmsg->lm_magic) {
 664         case LUSTRE_MSG_MAGIC_V2:
 665                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 666         default:
 667                 CERROR("bad lustre msg magic: %08x\n",
 668                        req->rq_repmsg->lm_magic);
 669                 return -EINVAL;
 670         }
 671 }
 672
 673 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 674 {
 675         if (n >= m->lm_bufcount)
 676                 return 0;
 677
 678         return m->lm_buflens[n];
 679 }
 680
 681 /**
 682  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 683  * \param m lustre_msg (request or reply) to look at
 684  * \param n message index (base 0)
 685  *
 686  * returns zero for non-existent message indices
 687  */
 688 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 689 {
 690         switch (m->lm_magic) {
 691         case LUSTRE_MSG_MAGIC_V2:
 692                 return lustre_msg_buflen_v2(m, n);
 693         default:
 694                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 695                 return 0;
 696         }
 697 }
 698 EXPORT_SYMBOL(lustre_msg_buflen);
 699
 700 static inline void
 701 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 702 {
 703         if (n >= m->lm_bufcount)
 704                 LBUG();
 705
 706         m->lm_buflens[n] = len;
 707 }
 708
 709 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 710 {
 711         switch (m->lm_magic) {
 712         case LUSTRE_MSG_MAGIC_V2:
 713                 lustre_msg_set_buflen_v2(m, n, len);
 714                 return;
 715         default:
 716                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 717         }
 718 }
 719
 720 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 721  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 722 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 723 {
 724         switch (m->lm_magic) {
 725         case LUSTRE_MSG_MAGIC_V2:
 726                 return m->lm_bufcount;
 727         default:
 728                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 729                 return 0;
 730         }
 731 }
 732
 733 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 734 {
 735         /* max_len == 0 means the string should fill the buffer */
 736         char *str;
 737         __u32 slen, blen;
 738
 739         switch (m->lm_magic) {
 740         case LUSTRE_MSG_MAGIC_V2:
 741                 str = lustre_msg_buf_v2(m, index, 0);
 742                 blen = lustre_msg_buflen_v2(m, index);
 743                 break;
 744         default:
 745                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 746         }
 747
 748         if (str == NULL) {
 749                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 750                 return NULL;
 751         }
 752
 753         slen = strnlen(str, blen);
 754
 755         if (slen == blen) {                     /* not NULL terminated */
 756                 CERROR("can't unpack non-NULL terminated string in "
 757                         "msg %p buffer[%d] len %d\n", m, index, blen);
 758                 return NULL;
 759         }
 760
 761         if (max_len == 0) {
 762                 if (slen != blen - 1) {
 763                         CERROR("can't unpack short string in msg %p "
 764                                "buffer[%d] len %d: strlen %d\n",
 765                                m, index, blen, slen);
 766                         return NULL;
 767                 }
 768         } else if (slen > max_len) {
 769                 CERROR("can't unpack oversized string in msg %p "
 770                        "buffer[%d] len %d strlen %d: max %d expected\n",
 771                        m, index, blen, slen, max_len);
 772                 return NULL;
 773         }
 774
 775         return str;
 776 }
 777
 778 /* Wrap up the normal fixed length cases */
 779 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 780                                       __u32 min_size, void *swabber)
 781 {
 782         void *ptr = NULL;
 783
 784         LASSERT(msg != NULL);
 785         switch (msg->lm_magic) {
 786         case LUSTRE_MSG_MAGIC_V2:
 787                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 788                 break;
 789         default:
 790                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 791         }
 792
 793         if (ptr != NULL && swabber != NULL)
 794                 ((void (*)(void *))swabber)(ptr);
 795
 796         return ptr;
 797 }
 798
 799 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 800 {
 801         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 802                                  sizeof(struct ptlrpc_body_v2));
 803 }
 804
 805 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
 806 {
 807         switch (msg->lm_magic) {
 808         case LUSTRE_MSG_MAGIC_V2:
 809                 /* already in host endian */
 810                 return msg->lm_flags;
 811         default:
 812                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 813                 return 0;
 814         }
 815 }
 816 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 817
 818 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 819 {
 820         switch (msg->lm_magic) {
 821         case LUSTRE_MSG_MAGIC_V2:
 822                 msg->lm_flags = flags;
 823                 return;
 824         default:
 825                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 826         }
 827 }
 828
 829 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 830 {
 831         switch (msg->lm_magic) {
 832         case LUSTRE_MSG_MAGIC_V2: {
 833                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 834                 if (pb != NULL)
 835                         return pb->pb_flags;
 836
 837                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 838         }
 839         /* no break */
 840         default:
 841                 /* flags might be printed in debug code while message
 842                  * uninitialized */
 843                 return 0;
 844         }
 845 }
 846 EXPORT_SYMBOL(lustre_msg_get_flags);
 847
 848 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 849 {
 850         switch (msg->lm_magic) {
 851         case LUSTRE_MSG_MAGIC_V2: {
 852                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 853                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 854                 pb->pb_flags |= flags;
 855                 return;
 856         }
 857         default:
 858                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 859         }
 860 }
 861 EXPORT_SYMBOL(lustre_msg_add_flags);
 862
 863 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 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 != NULL, "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
 877 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 878 {
 879         switch (msg->lm_magic) {
 880         case LUSTRE_MSG_MAGIC_V2: {
 881                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 882                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 883                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
 884                 return;
 885         }
 886         default:
 887                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 888         }
 889 }
 890 EXPORT_SYMBOL(lustre_msg_clear_flags);
 891
 892 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 893 {
 894         switch (msg->lm_magic) {
 895         case LUSTRE_MSG_MAGIC_V2: {
 896                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 897                 if (pb != NULL)
 898                         return pb->pb_op_flags;
 899
 900                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 901         }
 902         /* no break */
 903         default:
 904                 return 0;
 905         }
 906 }
 907
 908 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 909 {
 910         switch (msg->lm_magic) {
 911         case LUSTRE_MSG_MAGIC_V2: {
 912                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 913                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 914                 pb->pb_op_flags |= flags;
 915                 return;
 916         }
 917         default:
 918                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 919         }
 920 }
 921 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 922
 923 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 924 {
 925         switch (msg->lm_magic) {
 926         case LUSTRE_MSG_MAGIC_V2: {
 927                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 928                 if (pb == NULL) {
 929                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 930                         return NULL;
 931                 }
 932                 return &pb->pb_handle;
 933         }
 934         default:
 935                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 936                 return NULL;
 937         }
 938 }
 939
 940 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 941 {
 942         switch (msg->lm_magic) {
 943         case LUSTRE_MSG_MAGIC_V2: {
 944                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 945                 if (pb == NULL) {
 946                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 947                         return PTL_RPC_MSG_ERR;
 948                 }
 949                 return pb->pb_type;
 950         }
 951         default:
 952                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 953                 return PTL_RPC_MSG_ERR;
 954         }
 955 }
 956 EXPORT_SYMBOL(lustre_msg_get_type);
 957
 958 __u32 lustre_msg_get_version(struct lustre_msg *msg)
 959 {
 960         switch (msg->lm_magic) {
 961         case LUSTRE_MSG_MAGIC_V2: {
 962                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 963                 if (pb == NULL) {
 964                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 965                         return 0;
 966                 }
 967                 return pb->pb_version;
 968         }
 969         default:
 970                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 971                 return 0;
 972         }
 973 }
 974
 975 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
 976 {
 977         switch (msg->lm_magic) {
 978         case LUSTRE_MSG_MAGIC_V2: {
 979                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 980                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
 981                 pb->pb_version |= version;
 982                 return;
 983         }
 984         default:
 985                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 986         }
 987 }
 988
 989 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
 990 {
 991         switch (msg->lm_magic) {
 992         case LUSTRE_MSG_MAGIC_V2: {
 993                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 994                 if (pb == NULL) {
 995                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 996                         return 0;
 997                 }
 998                 return pb->pb_opc;
 999         }
1000         default:
1001                 CERROR("incorrect message magic: %08x (msg:%p)\n",
1002                        msg->lm_magic, msg);
1003                 return 0;
1004         }
1005 }
1006 EXPORT_SYMBOL(lustre_msg_get_opc);
1007
1008 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1009 {
1010         switch (msg->lm_magic) {
1011         case LUSTRE_MSG_MAGIC_V2: {
1012                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1013                 if (pb == NULL) {
1014                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1015                         return 0;
1016                 }
1017                 return pb->pb_last_xid;
1018         }
1019         default:
1020                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1021                 return 0;
1022         }
1023 }
1024 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1025
1026 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1027 {
1028         switch (msg->lm_magic) {
1029         case LUSTRE_MSG_MAGIC_V2: {
1030                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1031                 if (!pb) {
1032                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1033                         return 0;
1034                 }
1035                 return pb->pb_tag;
1036         }
1037         default:
1038                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1039                 return 0;
1040         }
1041 }
1042 EXPORT_SYMBOL(lustre_msg_get_tag);
1043
1044 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1045 {
1046         switch (msg->lm_magic) {
1047         case LUSTRE_MSG_MAGIC_V2: {
1048                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1049                 if (pb == NULL) {
1050                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1051                         return 0;
1052                 }
1053                 return pb->pb_last_committed;
1054         }
1055         default:
1056                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1057                 return 0;
1058         }
1059 }
1060 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1061
1062 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1063 {
1064         switch (msg->lm_magic) {
1065         case LUSTRE_MSG_MAGIC_V2: {
1066                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1067                 if (pb == NULL) {
1068                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1069                         return NULL;
1070                 }
1071                 return pb->pb_pre_versions;
1072         }
1073         default:
1074                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1075                 return NULL;
1076         }
1077 }
1078 EXPORT_SYMBOL(lustre_msg_get_versions);
1079
1080 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1081 {
1082         switch (msg->lm_magic) {
1083         case LUSTRE_MSG_MAGIC_V2: {
1084                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1085                 if (pb == NULL) {
1086                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1087                         return 0;
1088                 }
1089                 return pb->pb_transno;
1090         }
1091         default:
1092                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1093                 return 0;
1094         }
1095 }
1096 EXPORT_SYMBOL(lustre_msg_get_transno);
1097
1098 int lustre_msg_get_status(struct lustre_msg *msg)
1099 {
1100         switch (msg->lm_magic) {
1101         case LUSTRE_MSG_MAGIC_V2: {
1102                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1103                 if (pb != NULL)
1104                         return pb->pb_status;
1105                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1106         }
1107         /* no break */
1108         default:
1109                 /* status might be printed in debug code while message
1110                 * uninitialized */
1111                 return -EINVAL;
1112         }
1113 }
1114 EXPORT_SYMBOL(lustre_msg_get_status);
1115
1116 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1117 {
1118         switch (msg->lm_magic) {
1119         case LUSTRE_MSG_MAGIC_V2: {
1120                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1121                 if (pb == NULL) {
1122                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1123                         return -EINVAL;
1124                 }
1125                 return pb->pb_slv;
1126         }
1127         default:
1128                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1129                 return -EINVAL;
1130         }
1131 }
1132
1133
1134 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1135 {
1136         switch (msg->lm_magic) {
1137         case LUSTRE_MSG_MAGIC_V2: {
1138                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1139                 if (pb == NULL) {
1140                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1141                         return;
1142                 }
1143                 pb->pb_slv = slv;
1144                 return;
1145         }
1146         default:
1147                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1148                 return;
1149         }
1150 }
1151
1152 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1153 {
1154         switch (msg->lm_magic) {
1155         case LUSTRE_MSG_MAGIC_V2: {
1156                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1157                 if (pb == NULL) {
1158                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1159                         return -EINVAL;
1160                 }
1161                 return pb->pb_limit;
1162         }
1163         default:
1164                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1165                 return -EINVAL;
1166         }
1167 }
1168
1169
1170 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1171 {
1172         switch (msg->lm_magic) {
1173         case LUSTRE_MSG_MAGIC_V2: {
1174                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1175                 if (pb == NULL) {
1176                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1177                         return;
1178                 }
1179                 pb->pb_limit = limit;
1180                 return;
1181         }
1182         default:
1183                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1184                 return;
1185         }
1186 }
1187
1188 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1189 {
1190         switch (msg->lm_magic) {
1191         case LUSTRE_MSG_MAGIC_V2: {
1192                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1193                 if (pb == NULL) {
1194                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1195                         return 0;
1196                 }
1197                 return pb->pb_conn_cnt;
1198         }
1199         default:
1200                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1201                 return 0;
1202         }
1203 }
1204 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1205
1206 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1207 {
1208         switch (msg->lm_magic) {
1209         case LUSTRE_MSG_MAGIC_V2:
1210                 return msg->lm_magic;
1211         default:
1212                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1213                 return 0;
1214         }
1215 }
1216
1217 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1218 {
1219         switch (msg->lm_magic) {
1220         case LUSTRE_MSG_MAGIC_V2: {
1221                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1222                 if (pb == NULL) {
1223                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1224                         return 0;
1225                 }
1226                 return pb->pb_timeout;
1227         }
1228         default:
1229                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1230                 return 0;
1231         }
1232 }
1233
1234 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1235 {
1236         switch (msg->lm_magic) {
1237         case LUSTRE_MSG_MAGIC_V2: {
1238                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1239                 if (pb == NULL) {
1240                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1241                         return 0;
1242                 }
1243                 return pb->pb_service_time;
1244         }
1245         default:
1246                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1247                 return 0;
1248         }
1249 }
1250
1251 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1252 {
1253         switch (msg->lm_magic) {
1254         case LUSTRE_MSG_MAGIC_V2: {
1255                 struct ptlrpc_body *pb =
1256                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1257                                           sizeof(struct ptlrpc_body));
1258                 if (!pb)
1259                         return NULL;
1260
1261                 return pb->pb_jobid;
1262         }
1263         default:
1264                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1265                 return NULL;
1266         }
1267 }
1268 EXPORT_SYMBOL(lustre_msg_get_jobid);
1269
1270 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1271 {
1272         switch (msg->lm_magic) {
1273         case LUSTRE_MSG_MAGIC_V2:
1274                 return msg->lm_cksum;
1275         default:
1276                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1277                 return 0;
1278         }
1279 }
1280
1281 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1282 {
1283         switch (msg->lm_magic) {
1284         case LUSTRE_MSG_MAGIC_V2: {
1285                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1286                 if (pb == NULL) {
1287                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1288                         return 0;
1289                 }
1290                 return pb->pb_mbits;
1291         }
1292         default:
1293                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1294                 return 0;
1295         }
1296 }
1297
1298 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1299 {
1300         switch (msg->lm_magic) {
1301         case LUSTRE_MSG_MAGIC_V2: {
1302                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1303                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1304
1305                 unsigned int hsize = 4;
1306                 __u32 crc;
1307
1308                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1309                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1310                                        len, NULL, 0, (unsigned char *)&crc,
1311                                        &hsize);
1312                 return crc;
1313         }
1314         default:
1315                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1316                 return 0;
1317         }
1318 }
1319
1320 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1321 {
1322         switch (msg->lm_magic) {
1323         case LUSTRE_MSG_MAGIC_V2: {
1324                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1325                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1326                 pb->pb_handle = *handle;
1327                 return;
1328         }
1329         default:
1330                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1331         }
1332 }
1333
1334 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1335 {
1336         switch (msg->lm_magic) {
1337         case LUSTRE_MSG_MAGIC_V2: {
1338                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1339                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1340                 pb->pb_type = type;
1341                 return;
1342                 }
1343         default:
1344                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1345         }
1346 }
1347
1348 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1349 {
1350         switch (msg->lm_magic) {
1351         case LUSTRE_MSG_MAGIC_V2: {
1352                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1353                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1354                 pb->pb_opc = opc;
1355                 return;
1356         }
1357         default:
1358                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1359         }
1360 }
1361
1362 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1363 {
1364         switch (msg->lm_magic) {
1365         case LUSTRE_MSG_MAGIC_V2: {
1366                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1367                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1368                 pb->pb_last_xid = last_xid;
1369                 return;
1370         }
1371         default:
1372                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1373         }
1374 }
1375 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1376
1377 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1378 {
1379         switch (msg->lm_magic) {
1380         case LUSTRE_MSG_MAGIC_V2: {
1381                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1382                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1383                 pb->pb_tag = tag;
1384                 return;
1385         }
1386         default:
1387                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1388         }
1389 }
1390 EXPORT_SYMBOL(lustre_msg_set_tag);
1391
1392 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1393 {
1394         switch (msg->lm_magic) {
1395         case LUSTRE_MSG_MAGIC_V2: {
1396                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1397                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1398                 pb->pb_last_committed = last_committed;
1399                 return;
1400         }
1401         default:
1402                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1403         }
1404 }
1405
1406 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1407 {
1408         switch (msg->lm_magic) {
1409         case LUSTRE_MSG_MAGIC_V2: {
1410                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1411                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1412                 pb->pb_pre_versions[0] = versions[0];
1413                 pb->pb_pre_versions[1] = versions[1];
1414                 pb->pb_pre_versions[2] = versions[2];
1415                 pb->pb_pre_versions[3] = versions[3];
1416                 return;
1417         }
1418         default:
1419                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1420         }
1421 }
1422 EXPORT_SYMBOL(lustre_msg_set_versions);
1423
1424 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1425 {
1426         switch (msg->lm_magic) {
1427         case LUSTRE_MSG_MAGIC_V2: {
1428                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1429                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1430                 pb->pb_transno = transno;
1431                 return;
1432         }
1433         default:
1434                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1435         }
1436 }
1437 EXPORT_SYMBOL(lustre_msg_set_transno);
1438
1439 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1440 {
1441         switch (msg->lm_magic) {
1442         case LUSTRE_MSG_MAGIC_V2: {
1443                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1444                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1445                 pb->pb_status = status;
1446                 return;
1447         }
1448         default:
1449                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1450         }
1451 }
1452 EXPORT_SYMBOL(lustre_msg_set_status);
1453
1454 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1455 {
1456         switch (msg->lm_magic) {
1457         case LUSTRE_MSG_MAGIC_V2: {
1458                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1459                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1460                 pb->pb_conn_cnt = conn_cnt;
1461                 return;
1462         }
1463         default:
1464                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1465         }
1466 }
1467
1468 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1469 {
1470         switch (msg->lm_magic) {
1471         case LUSTRE_MSG_MAGIC_V2: {
1472                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1473                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1474                 pb->pb_timeout = timeout;
1475                 return;
1476         }
1477         default:
1478                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1479         }
1480 }
1481
1482 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1483 {
1484         switch (msg->lm_magic) {
1485         case LUSTRE_MSG_MAGIC_V2: {
1486                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1487                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1488                 pb->pb_service_time = service_time;
1489                 return;
1490         }
1491         default:
1492                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1493         }
1494 }
1495
1496 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1497 {
1498         switch (msg->lm_magic) {
1499         case LUSTRE_MSG_MAGIC_V2: {
1500                 __u32 opc = lustre_msg_get_opc(msg);
1501                 struct ptlrpc_body *pb;
1502
1503                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1504                  * See the comment in ptlrpc_request_pack(). */
1505                 if (!opc || opc == LDLM_BL_CALLBACK ||
1506                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1507                         return;
1508
1509                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1510                                        sizeof(struct ptlrpc_body));
1511                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1512
1513                 if (jobid != NULL)
1514                         memcpy(pb->pb_jobid, jobid, LUSTRE_JOBID_SIZE);
1515                 else if (pb->pb_jobid[0] == '\0')
1516                         lustre_get_jobid(pb->pb_jobid);
1517                 return;
1518         }
1519         default:
1520                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1521         }
1522 }
1523 EXPORT_SYMBOL(lustre_msg_set_jobid);
1524
1525 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1526 {
1527         switch (msg->lm_magic) {
1528         case LUSTRE_MSG_MAGIC_V2:
1529                 msg->lm_cksum = cksum;
1530                 return;
1531         default:
1532                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1533         }
1534 }
1535
1536 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1537 {
1538         switch (msg->lm_magic) {
1539         case LUSTRE_MSG_MAGIC_V2: {
1540                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1541
1542                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1543                 pb->pb_mbits = mbits;
1544                 return;
1545         }
1546         default:
1547                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1548         }
1549 }
1550
1551 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1552 {
1553         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1554
1555         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1556                                          req->rq_pill.rc_area[RCL_SERVER]);
1557         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1558                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1559 }
1560 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1561
1562 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1563 {
1564         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1565         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1566                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1567 }
1568
1569 /**
1570  * Send a remote set_info_async.
1571  *
1572  * This may go from client to server or server to client.
1573  */
1574 int do_set_info_async(struct obd_import *imp,
1575                       int opcode, int version,
1576                       size_t keylen, void *key,
1577                       size_t vallen, void *val,
1578                       struct ptlrpc_request_set *set)
1579 {
1580         struct ptlrpc_request *req;
1581         char                  *tmp;
1582         int                    rc;
1583         ENTRY;
1584
1585         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1586         if (req == NULL)
1587                 RETURN(-ENOMEM);
1588
1589         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1590                              RCL_CLIENT, keylen);
1591         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1592                              RCL_CLIENT, vallen);
1593         rc = ptlrpc_request_pack(req, version, opcode);
1594         if (rc) {
1595                 ptlrpc_request_free(req);
1596                 RETURN(rc);
1597         }
1598
1599         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1600         memcpy(tmp, key, keylen);
1601         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1602         memcpy(tmp, val, vallen);
1603
1604         ptlrpc_request_set_replen(req);
1605
1606         if (set) {
1607                 ptlrpc_set_add_req(set, req);
1608                 ptlrpc_check_set(NULL, set);
1609         } else {
1610                 rc = ptlrpc_queue_wait(req);
1611                 ptlrpc_req_finished(req);
1612         }
1613
1614         RETURN(rc);
1615 }
1616 EXPORT_SYMBOL(do_set_info_async);
1617
1618 /* byte flipping routines for all wire types declared in
1619  * lustre_idl.h implemented here.
1620  */
1621 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1622 {
1623         __swab32s (&b->pb_type);
1624         __swab32s (&b->pb_version);
1625         __swab32s (&b->pb_opc);
1626         __swab32s (&b->pb_status);
1627         __swab64s (&b->pb_last_xid);
1628         __swab16s (&b->pb_tag);
1629         __swab64s (&b->pb_last_committed);
1630         __swab64s (&b->pb_transno);
1631         __swab32s (&b->pb_flags);
1632         __swab32s (&b->pb_op_flags);
1633         __swab32s (&b->pb_conn_cnt);
1634         __swab32s (&b->pb_timeout);
1635         __swab32s (&b->pb_service_time);
1636         __swab32s (&b->pb_limit);
1637         __swab64s (&b->pb_slv);
1638         __swab64s (&b->pb_pre_versions[0]);
1639         __swab64s (&b->pb_pre_versions[1]);
1640         __swab64s (&b->pb_pre_versions[2]);
1641         __swab64s (&b->pb_pre_versions[3]);
1642         __swab64s(&b->pb_mbits);
1643         CLASSERT(offsetof(typeof(*b), pb_padding0) != 0);
1644         CLASSERT(offsetof(typeof(*b), pb_padding1) != 0);
1645         CLASSERT(offsetof(typeof(*b), pb_padding64_0) != 0);
1646         CLASSERT(offsetof(typeof(*b), pb_padding64_1) != 0);
1647         CLASSERT(offsetof(typeof(*b), pb_padding64_2) != 0);
1648         /* While we need to maintain compatibility between
1649          * clients and servers without ptlrpc_body_v2 (< 2.3)
1650          * do not swab any fields beyond pb_jobid, as we are
1651          * using this swab function for both ptlrpc_body
1652          * and ptlrpc_body_v2. */
1653         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1654 }
1655
1656 void lustre_swab_connect(struct obd_connect_data *ocd)
1657 {
1658         __swab64s(&ocd->ocd_connect_flags);
1659         __swab32s(&ocd->ocd_version);
1660         __swab32s(&ocd->ocd_grant);
1661         __swab64s(&ocd->ocd_ibits_known);
1662         __swab32s(&ocd->ocd_index);
1663         __swab32s(&ocd->ocd_brw_size);
1664         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1665          * they are 8-byte values */
1666         __swab16s(&ocd->ocd_grant_tax_kb);
1667         __swab32s(&ocd->ocd_grant_max_blks);
1668         __swab64s(&ocd->ocd_transno);
1669         __swab32s(&ocd->ocd_group);
1670         __swab32s(&ocd->ocd_cksum_types);
1671         __swab32s(&ocd->ocd_instance);
1672         /* Fields after ocd_cksum_types are only accessible by the receiver
1673          * if the corresponding flag in ocd_connect_flags is set. Accessing
1674          * any field after ocd_maxbytes on the receiver without a valid flag
1675          * may result in out-of-bound memory access and kernel oops. */
1676         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1677                 __swab32s(&ocd->ocd_max_easize);
1678         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1679                 __swab64s(&ocd->ocd_maxbytes);
1680         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1681                 __swab16s(&ocd->ocd_maxmodrpcs);
1682         CLASSERT(offsetof(typeof(*ocd), padding0) != 0);
1683         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1684         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1685                 __swab64s(&ocd->ocd_connect_flags2);
1686         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1687         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1688         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1689         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1690         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1691         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1692         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1693         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1694         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1695         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1696         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1697         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1698         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1699 }
1700
1701 static void lustre_swab_ost_layout(struct ost_layout *ol)
1702 {
1703         __swab32s(&ol->ol_stripe_size);
1704         __swab32s(&ol->ol_stripe_count);
1705         __swab64s(&ol->ol_comp_start);
1706         __swab64s(&ol->ol_comp_end);
1707         __swab32s(&ol->ol_comp_id);
1708 }
1709
1710 void lustre_swab_obdo (struct obdo  *o)
1711 {
1712         __swab64s (&o->o_valid);
1713         lustre_swab_ost_id(&o->o_oi);
1714         __swab64s (&o->o_parent_seq);
1715         __swab64s (&o->o_size);
1716         __swab64s (&o->o_mtime);
1717         __swab64s (&o->o_atime);
1718         __swab64s (&o->o_ctime);
1719         __swab64s (&o->o_blocks);
1720         __swab64s (&o->o_grant);
1721         __swab32s (&o->o_blksize);
1722         __swab32s (&o->o_mode);
1723         __swab32s (&o->o_uid);
1724         __swab32s (&o->o_gid);
1725         __swab32s (&o->o_flags);
1726         __swab32s (&o->o_nlink);
1727         __swab32s (&o->o_parent_oid);
1728         __swab32s (&o->o_misc);
1729         __swab64s (&o->o_ioepoch);
1730         __swab32s (&o->o_stripe_idx);
1731         __swab32s (&o->o_parent_ver);
1732         lustre_swab_ost_layout(&o->o_layout);
1733         CLASSERT(offsetof(typeof(*o), o_padding_3) != 0);
1734         __swab32s (&o->o_uid_h);
1735         __swab32s (&o->o_gid_h);
1736         __swab64s (&o->o_data_version);
1737         __swab32s(&o->o_projid);
1738         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1739         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1740         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1741
1742 }
1743 EXPORT_SYMBOL(lustre_swab_obdo);
1744
1745 void lustre_swab_obd_statfs (struct obd_statfs *os)
1746 {
1747         __swab64s (&os->os_type);
1748         __swab64s (&os->os_blocks);
1749         __swab64s (&os->os_bfree);
1750         __swab64s (&os->os_bavail);
1751         __swab64s (&os->os_files);
1752         __swab64s (&os->os_ffree);
1753         /* no need to swab os_fsid */
1754         __swab32s (&os->os_bsize);
1755         __swab32s (&os->os_namelen);
1756         __swab64s (&os->os_maxbytes);
1757         __swab32s (&os->os_state);
1758         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1759         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1760         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1761         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1762         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1763         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1764         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1765         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1766         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1767 }
1768
1769 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1770 {
1771         lustre_swab_ost_id(&ioo->ioo_oid);
1772         __swab32s(&ioo->ioo_max_brw);
1773         __swab32s(&ioo->ioo_bufcnt);
1774 }
1775
1776 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1777 {
1778         __swab64s(&nbr->rnb_offset);
1779         __swab32s(&nbr->rnb_len);
1780         __swab32s(&nbr->rnb_flags);
1781 }
1782
1783 void lustre_swab_ost_body (struct ost_body *b)
1784 {
1785         lustre_swab_obdo (&b->oa);
1786 }
1787
1788 void lustre_swab_ost_last_id(u64 *id)
1789 {
1790         __swab64s(id);
1791 }
1792
1793 void lustre_swab_generic_32s(__u32 *val)
1794 {
1795         __swab32s(val);
1796 }
1797
1798 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1799 {
1800         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1801         __swab64s(&desc->gl_flags);
1802         __swab64s(&desc->gl_ver);
1803         __swab64s(&desc->gl_hardlimit);
1804         __swab64s(&desc->gl_softlimit);
1805         __swab64s(&desc->gl_time);
1806         CLASSERT(offsetof(typeof(*desc), gl_pad2) != 0);
1807 }
1808 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1809
1810 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1811 {
1812         __swab32s(&desc->lgbd_status);
1813         __swab32s(&desc->lgbd_timeout);
1814         CLASSERT(offsetof(typeof(*desc), lgbd_padding) != 0);
1815 }
1816 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1817
1818 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1819 {
1820         __swab64s(&lvb->lvb_size);
1821         __swab64s(&lvb->lvb_mtime);
1822         __swab64s(&lvb->lvb_atime);
1823         __swab64s(&lvb->lvb_ctime);
1824         __swab64s(&lvb->lvb_blocks);
1825 }
1826 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1827
1828 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1829 {
1830         __swab64s(&lvb->lvb_size);
1831         __swab64s(&lvb->lvb_mtime);
1832         __swab64s(&lvb->lvb_atime);
1833         __swab64s(&lvb->lvb_ctime);
1834         __swab64s(&lvb->lvb_blocks);
1835         __swab32s(&lvb->lvb_mtime_ns);
1836         __swab32s(&lvb->lvb_atime_ns);
1837         __swab32s(&lvb->lvb_ctime_ns);
1838         __swab32s(&lvb->lvb_padding);
1839 }
1840 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1841
1842 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1843 {
1844         __swab64s(&lvb->lvb_flags);
1845         __swab64s(&lvb->lvb_id_may_rel);
1846         __swab64s(&lvb->lvb_id_rel);
1847         __swab64s(&lvb->lvb_id_qunit);
1848         __swab64s(&lvb->lvb_pad1);
1849 }
1850 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1851
1852 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1853 {
1854         __swab32s(&lvb->lvb_status);
1855         __swab32s(&lvb->lvb_index);
1856         CLASSERT(offsetof(typeof(*lvb), lvb_padding) != 0);
1857 }
1858 EXPORT_SYMBOL(lustre_swab_barrier_lvb);
1859
1860 void lustre_swab_mdt_body (struct mdt_body *b)
1861 {
1862         lustre_swab_lu_fid(&b->mbo_fid1);
1863         lustre_swab_lu_fid(&b->mbo_fid2);
1864         /* handle is opaque */
1865         __swab64s(&b->mbo_valid);
1866         __swab64s(&b->mbo_size);
1867         __swab64s(&b->mbo_mtime);
1868         __swab64s(&b->mbo_atime);
1869         __swab64s(&b->mbo_ctime);
1870         __swab64s(&b->mbo_blocks);
1871         __swab64s(&b->mbo_ioepoch);
1872         __swab64s(&b->mbo_t_state);
1873         __swab32s(&b->mbo_fsuid);
1874         __swab32s(&b->mbo_fsgid);
1875         __swab32s(&b->mbo_capability);
1876         __swab32s(&b->mbo_mode);
1877         __swab32s(&b->mbo_uid);
1878         __swab32s(&b->mbo_gid);
1879         __swab32s(&b->mbo_flags);
1880         __swab32s(&b->mbo_rdev);
1881         __swab32s(&b->mbo_nlink);
1882         CLASSERT(offsetof(typeof(*b), mbo_unused2) != 0);
1883         __swab32s(&b->mbo_suppgid);
1884         __swab32s(&b->mbo_eadatasize);
1885         __swab32s(&b->mbo_aclsize);
1886         __swab32s(&b->mbo_max_mdsize);
1887         CLASSERT(offsetof(typeof(*b), mbo_unused3) != 0);
1888         __swab32s(&b->mbo_uid_h);
1889         __swab32s(&b->mbo_gid_h);
1890         __swab32s(&b->mbo_projid);
1891         CLASSERT(offsetof(typeof(*b), mbo_padding_6) != 0);
1892 }
1893
1894 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1895 {
1896         /* mio_handle is opaque */
1897         CLASSERT(offsetof(typeof(*b), mio_unused1) != 0);
1898         CLASSERT(offsetof(typeof(*b), mio_unused2) != 0);
1899         CLASSERT(offsetof(typeof(*b), mio_padding) != 0);
1900 }
1901
1902 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1903 {
1904         int i;
1905         __swab32s(&mti->mti_lustre_ver);
1906         __swab32s(&mti->mti_stripe_index);
1907         __swab32s(&mti->mti_config_ver);
1908         __swab32s(&mti->mti_flags);
1909         __swab32s(&mti->mti_instance);
1910         __swab32s(&mti->mti_nid_count);
1911         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1912         for (i = 0; i < MTI_NIDS_MAX; i++)
1913                 __swab64s(&mti->mti_nids[i]);
1914 }
1915
1916 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1917 {
1918         __u8 i;
1919
1920         __swab64s(&entry->mne_version);
1921         __swab32s(&entry->mne_instance);
1922         __swab32s(&entry->mne_index);
1923         __swab32s(&entry->mne_length);
1924
1925         /* mne_nid_(count|type) must be one byte size because we're gonna
1926          * access it w/o swapping. */
1927         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1928         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1929
1930         /* remove this assertion if ipv6 is supported. */
1931         LASSERT(entry->mne_nid_type == 0);
1932         for (i = 0; i < entry->mne_nid_count; i++) {
1933                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1934                 __swab64s(&entry->u.nids[i]);
1935         }
1936 }
1937 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1938
1939 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1940 {
1941         __swab64s(&body->mcb_offset);
1942         __swab32s(&body->mcb_units);
1943         __swab16s(&body->mcb_type);
1944 }
1945
1946 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1947 {
1948         __swab64s(&body->mcr_offset);
1949         __swab64s(&body->mcr_size);
1950 }
1951
1952 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1953 {
1954         __swab64s (&i->dqi_bgrace);
1955         __swab64s (&i->dqi_igrace);
1956         __swab32s (&i->dqi_flags);
1957         __swab32s (&i->dqi_valid);
1958 }
1959
1960 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1961 {
1962         __swab64s (&b->dqb_ihardlimit);
1963         __swab64s (&b->dqb_isoftlimit);
1964         __swab64s (&b->dqb_curinodes);
1965         __swab64s (&b->dqb_bhardlimit);
1966         __swab64s (&b->dqb_bsoftlimit);
1967         __swab64s (&b->dqb_curspace);
1968         __swab64s (&b->dqb_btime);
1969         __swab64s (&b->dqb_itime);
1970         __swab32s (&b->dqb_valid);
1971         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1972 }
1973
1974 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1975 {
1976         __swab32s (&q->qc_cmd);
1977         __swab32s (&q->qc_type);
1978         __swab32s (&q->qc_id);
1979         __swab32s (&q->qc_stat);
1980         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1981         lustre_swab_obd_dqblk (&q->qc_dqblk);
1982 }
1983
1984 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
1985 {
1986         lustre_swab_lu_fid(&gf->gf_fid);
1987         __swab64s(&gf->gf_recno);
1988         __swab32s(&gf->gf_linkno);
1989         __swab32s(&gf->gf_pathlen);
1990 }
1991 EXPORT_SYMBOL(lustre_swab_fid2path);
1992
1993 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
1994 {
1995         __swab64s(&fm_extent->fe_logical);
1996         __swab64s(&fm_extent->fe_physical);
1997         __swab64s(&fm_extent->fe_length);
1998         __swab32s(&fm_extent->fe_flags);
1999         __swab32s(&fm_extent->fe_device);
2000 }
2001
2002 void lustre_swab_fiemap(struct fiemap *fiemap)
2003 {
2004         __u32 i;
2005
2006         __swab64s(&fiemap->fm_start);
2007         __swab64s(&fiemap->fm_length);
2008         __swab32s(&fiemap->fm_flags);
2009         __swab32s(&fiemap->fm_mapped_extents);
2010         __swab32s(&fiemap->fm_extent_count);
2011         __swab32s(&fiemap->fm_reserved);
2012
2013         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2014                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2015 }
2016
2017 void lustre_swab_idx_info(struct idx_info *ii)
2018 {
2019         __swab32s(&ii->ii_magic);
2020         __swab32s(&ii->ii_flags);
2021         __swab16s(&ii->ii_count);
2022         __swab32s(&ii->ii_attrs);
2023         lustre_swab_lu_fid(&ii->ii_fid);
2024         __swab64s(&ii->ii_version);
2025         __swab64s(&ii->ii_hash_start);
2026         __swab64s(&ii->ii_hash_end);
2027         __swab16s(&ii->ii_keysize);
2028         __swab16s(&ii->ii_recsize);
2029 }
2030
2031 void lustre_swab_lip_header(struct lu_idxpage *lip)
2032 {
2033         /* swab header */
2034         __swab32s(&lip->lip_magic);
2035         __swab16s(&lip->lip_flags);
2036         __swab16s(&lip->lip_nr);
2037 }
2038 EXPORT_SYMBOL(lustre_swab_lip_header);
2039
2040 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2041 {
2042         __swab32s(&rr->rr_opcode);
2043         __swab32s(&rr->rr_cap);
2044         __swab32s(&rr->rr_fsuid);
2045         /* rr_fsuid_h is unused */
2046         __swab32s(&rr->rr_fsgid);
2047         /* rr_fsgid_h is unused */
2048         __swab32s(&rr->rr_suppgid1);
2049         /* rr_suppgid1_h is unused */
2050         __swab32s(&rr->rr_suppgid2);
2051         /* rr_suppgid2_h is unused */
2052         lustre_swab_lu_fid(&rr->rr_fid1);
2053         lustre_swab_lu_fid(&rr->rr_fid2);
2054         __swab64s(&rr->rr_mtime);
2055         __swab64s(&rr->rr_atime);
2056         __swab64s(&rr->rr_ctime);
2057         __swab64s(&rr->rr_size);
2058         __swab64s(&rr->rr_blocks);
2059         __swab32s(&rr->rr_bias);
2060         __swab32s(&rr->rr_mode);
2061         __swab32s(&rr->rr_flags);
2062         __swab32s(&rr->rr_flags_h);
2063         __swab32s(&rr->rr_umask);
2064
2065         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2066 };
2067
2068 void lustre_swab_lov_desc (struct lov_desc *ld)
2069 {
2070         __swab32s (&ld->ld_tgt_count);
2071         __swab32s (&ld->ld_active_tgt_count);
2072         __swab32s (&ld->ld_default_stripe_count);
2073         __swab32s (&ld->ld_pattern);
2074         __swab64s (&ld->ld_default_stripe_size);
2075         __swab64s (&ld->ld_default_stripe_offset);
2076         __swab32s (&ld->ld_qos_maxage);
2077         /* uuid endian insensitive */
2078 }
2079 EXPORT_SYMBOL(lustre_swab_lov_desc);
2080
2081 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2082 {
2083         __swab32s (&ld->ld_tgt_count);
2084         __swab32s (&ld->ld_active_tgt_count);
2085         __swab32s (&ld->ld_default_stripe_count);
2086         __swab32s (&ld->ld_pattern);
2087         __swab64s (&ld->ld_default_hash_size);
2088         __swab32s (&ld->ld_qos_maxage);
2089         /* uuid endian insensitive */
2090 }
2091
2092 /* This structure is always in little-endian */
2093 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2094 {
2095         int i;
2096
2097         __swab32s(&lmm1->lmv_magic);
2098         __swab32s(&lmm1->lmv_stripe_count);
2099         __swab32s(&lmm1->lmv_master_mdt_index);
2100         __swab32s(&lmm1->lmv_hash_type);
2101         __swab32s(&lmm1->lmv_layout_version);
2102         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2103                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2104 }
2105
2106 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2107 {
2108         switch (lmm->lmv_magic) {
2109         case LMV_MAGIC_V1:
2110                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2111                 break;
2112         default:
2113                 break;
2114         }
2115 }
2116 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2117
2118 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2119 {
2120         __swab32s(&lum->lum_magic);
2121         __swab32s(&lum->lum_stripe_count);
2122         __swab32s(&lum->lum_stripe_offset);
2123         __swab32s(&lum->lum_hash_type);
2124         __swab32s(&lum->lum_type);
2125         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2126 }
2127 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2128
2129 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2130                               const char *msg)
2131 {
2132         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2133         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2134         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2135         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2136         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2137         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2138         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2139         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2140                lum->lmm_stripe_offset);
2141         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2142                 struct lov_user_md_v3 *v3 = (void *)lum;
2143                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2144         }
2145         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2146                 struct lov_user_md_v3 *v3 = (void *)lum;
2147                 int i;
2148
2149                 if (v3->lmm_pool_name[0] != '\0')
2150                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2151
2152                 CDEBUG(lvl, "\ttarget list:\n");
2153                 for (i = 0; i < v3->lmm_stripe_count; i++)
2154                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2155         }
2156 }
2157
2158 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2159                           const char *msg)
2160 {
2161         struct lov_comp_md_v1   *comp_v1;
2162         int                      i;
2163
2164         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2165                 return;
2166
2167         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2168             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2169                 lustre_print_v1v3(lvl, lum, msg);
2170                 return;
2171         }
2172
2173         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2174                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2175                 return;
2176         }
2177
2178         comp_v1 = (struct lov_comp_md_v1 *)lum;
2179         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2180         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2181         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2182         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2183         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2184         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2185
2186         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2187                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2188                 struct lov_user_md *v1;
2189
2190                 CDEBUG(lvl, "\tentry %d:\n", i);
2191                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2192                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2193                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2194                        ent->lcme_extent.e_start);
2195                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2196                        ent->lcme_extent.e_end);
2197                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2198                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2199
2200                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2201                                 comp_v1->lcm_entries[i].lcme_offset);
2202                 lustre_print_v1v3(lvl, v1, msg);
2203         }
2204 }
2205 EXPORT_SYMBOL(lustre_print_user_md);
2206
2207 static void lustre_swab_lmm_oi(struct ost_id *oi)
2208 {
2209         __swab64s(&oi->oi.oi_id);
2210         __swab64s(&oi->oi.oi_seq);
2211 }
2212
2213 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2214 {
2215         ENTRY;
2216         __swab32s(&lum->lmm_magic);
2217         __swab32s(&lum->lmm_pattern);
2218         lustre_swab_lmm_oi(&lum->lmm_oi);
2219         __swab32s(&lum->lmm_stripe_size);
2220         __swab16s(&lum->lmm_stripe_count);
2221         __swab16s(&lum->lmm_stripe_offset);
2222         EXIT;
2223 }
2224
2225 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2226 {
2227         ENTRY;
2228         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2229         lustre_swab_lov_user_md_common(lum);
2230         EXIT;
2231 }
2232 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2233
2234 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2235 {
2236         ENTRY;
2237         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2238         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2239         /* lmm_pool_name nothing to do with char */
2240         EXIT;
2241 }
2242 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2243
2244 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2245 {
2246         struct lov_comp_md_entry_v1     *ent;
2247         struct lov_user_md_v1   *v1;
2248         struct lov_user_md_v3   *v3;
2249         int     i;
2250         bool    cpu_endian;
2251         __u32   off, size;
2252         __u16   ent_count, stripe_count;
2253         ENTRY;
2254
2255         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2256         ent_count = lum->lcm_entry_count;
2257         if (!cpu_endian)
2258                 __swab16s(&ent_count);
2259
2260         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2261         __swab32s(&lum->lcm_magic);
2262         __swab32s(&lum->lcm_size);
2263         __swab32s(&lum->lcm_layout_gen);
2264         __swab16s(&lum->lcm_flags);
2265         __swab16s(&lum->lcm_entry_count);
2266         CLASSERT(offsetof(typeof(*lum), lcm_padding1) != 0);
2267         CLASSERT(offsetof(typeof(*lum), lcm_padding2) != 0);
2268
2269         for (i = 0; i < ent_count; i++) {
2270                 ent = &lum->lcm_entries[i];
2271                 off = ent->lcme_offset;
2272                 size = ent->lcme_size;
2273
2274                 if (!cpu_endian) {
2275                         __swab32s(&off);
2276                         __swab32s(&size);
2277                 }
2278                 __swab32s(&ent->lcme_id);
2279                 __swab32s(&ent->lcme_flags);
2280                 __swab64s(&ent->lcme_extent.e_start);
2281                 __swab64s(&ent->lcme_extent.e_end);
2282                 __swab32s(&ent->lcme_offset);
2283                 __swab32s(&ent->lcme_size);
2284                 CLASSERT(offsetof(typeof(*ent), lcme_padding) != 0);
2285
2286                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2287                 stripe_count = v1->lmm_stripe_count;
2288                 if (!cpu_endian)
2289                         __swab16s(&stripe_count);
2290
2291                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2292                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2293                         lustre_swab_lov_user_md_v1(v1);
2294                         if (size > sizeof(*v1))
2295                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2296                                                                 stripe_count);
2297                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2298                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2299                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2300                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2301                         v3 = (struct lov_user_md_v3 *)v1;
2302                         lustre_swab_lov_user_md_v3(v3);
2303                         if (size > sizeof(*v3))
2304                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2305                                                                 stripe_count);
2306                 } else {
2307                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2308                 }
2309         }
2310 }
2311 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2312
2313 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2314 {
2315         ENTRY;
2316         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2317         __swab32s(&lmm->lmm_magic);
2318         __swab32s(&lmm->lmm_pattern);
2319         lustre_swab_lmm_oi(&lmm->lmm_oi);
2320         __swab32s(&lmm->lmm_stripe_size);
2321         __swab16s(&lmm->lmm_stripe_count);
2322         __swab16s(&lmm->lmm_layout_gen);
2323         EXIT;
2324 }
2325 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2326
2327 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2328                                      int stripe_count)
2329 {
2330         int i;
2331         ENTRY;
2332         for (i = 0; i < stripe_count; i++) {
2333                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2334                 __swab32s(&(lod[i].l_ost_gen));
2335                 __swab32s(&(lod[i].l_ost_idx));
2336         }
2337         EXIT;
2338 }
2339 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2340
2341 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2342 {
2343         int  i;
2344
2345         for (i = 0; i < RES_NAME_SIZE; i++)
2346                 __swab64s (&id->name[i]);
2347 }
2348
2349 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2350 {
2351         /* the lock data is a union and the first two fields are always an
2352          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2353          * data the same way. */
2354         __swab64s(&d->l_extent.start);
2355         __swab64s(&d->l_extent.end);
2356         __swab64s(&d->l_extent.gid);
2357         __swab64s(&d->l_flock.lfw_owner);
2358         __swab32s(&d->l_flock.lfw_pid);
2359 }
2360
2361 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2362 {
2363         __swab64s(&i->opc);
2364 }
2365
2366 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2367 {
2368         __swab32s(&r->lr_type);
2369         CLASSERT(offsetof(typeof(*r), lr_pad) != 0);
2370         lustre_swab_ldlm_res_id(&r->lr_name);
2371 }
2372
2373 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2374 {
2375         lustre_swab_ldlm_resource_desc (&l->l_resource);
2376         __swab32s (&l->l_req_mode);
2377         __swab32s (&l->l_granted_mode);
2378         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2379 }
2380
2381 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2382 {
2383         __swab32s (&rq->lock_flags);
2384         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2385         __swab32s (&rq->lock_count);
2386         /* lock_handle[] opaque */
2387 }
2388
2389 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2390 {
2391         __swab32s (&r->lock_flags);
2392         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2393         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2394         /* lock_handle opaque */
2395         __swab64s (&r->lock_policy_res1);
2396         __swab64s (&r->lock_policy_res2);
2397 }
2398
2399 void lustre_swab_quota_body(struct quota_body *b)
2400 {
2401         lustre_swab_lu_fid(&b->qb_fid);
2402         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2403         __swab32s(&b->qb_flags);
2404         __swab64s(&b->qb_count);
2405         __swab64s(&b->qb_usage);
2406         __swab64s(&b->qb_slv_ver);
2407 }
2408
2409 /* Dump functions */
2410 void dump_ioo(struct obd_ioobj *ioo)
2411 {
2412         CDEBUG(D_RPCTRACE,
2413                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2414                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2415                ioo->ioo_bufcnt);
2416 }
2417
2418 void dump_rniobuf(struct niobuf_remote *nb)
2419 {
2420         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2421                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2422 }
2423
2424 void dump_obdo(struct obdo *oa)
2425 {
2426         u64 valid = oa->o_valid;
2427
2428         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2429         if (valid & OBD_MD_FLID)
2430                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2431         if (valid & OBD_MD_FLFID)
2432                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2433                        oa->o_parent_seq);
2434         if (valid & OBD_MD_FLSIZE)
2435                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2436         if (valid & OBD_MD_FLMTIME)
2437                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2438         if (valid & OBD_MD_FLATIME)
2439                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2440         if (valid & OBD_MD_FLCTIME)
2441                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2442         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2443                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2444         if (valid & OBD_MD_FLGRANT)
2445                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2446         if (valid & OBD_MD_FLBLKSZ)
2447                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2448         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2449                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2450                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2451                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2452         if (valid & OBD_MD_FLUID)
2453                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2454         if (valid & OBD_MD_FLUID)
2455                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2456         if (valid & OBD_MD_FLGID)
2457                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2458         if (valid & OBD_MD_FLGID)
2459                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2460         if (valid & OBD_MD_FLFLAGS)
2461                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2462         if (valid & OBD_MD_FLNLINK)
2463                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2464         else if (valid & OBD_MD_FLCKSUM)
2465                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2466                        oa->o_nlink);
2467         if (valid & OBD_MD_FLGENER)
2468                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2469                        oa->o_parent_oid);
2470         if (valid & OBD_MD_FLEPOCH)
2471                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = %lld\n",
2472                        oa->o_ioepoch);
2473         if (valid & OBD_MD_FLFID) {
2474                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2475                        oa->o_stripe_idx);
2476                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2477                        oa->o_parent_ver);
2478         }
2479         if (valid & OBD_MD_FLHANDLE)
2480                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2481                        oa->o_handle.cookie);
2482 }
2483
2484 void dump_ost_body(struct ost_body *ob)
2485 {
2486         dump_obdo(&ob->oa);
2487 }
2488
2489 void dump_rcs(__u32 *rc)
2490 {
2491         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2492 }
2493
2494 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2495 {
2496         LASSERT(req->rq_reqmsg);
2497
2498         switch (req->rq_reqmsg->lm_magic) {
2499         case LUSTRE_MSG_MAGIC_V2:
2500                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2501         default:
2502                 CERROR("bad lustre msg magic: %#08X\n",
2503                        req->rq_reqmsg->lm_magic);
2504         }
2505         return 0;
2506 }
2507
2508 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2509 {
2510         LASSERT(req->rq_repmsg);
2511
2512         switch (req->rq_repmsg->lm_magic) {
2513         case LUSTRE_MSG_MAGIC_V2:
2514                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2515         default:
2516                 /* uninitialized yet */
2517                 return 0;
2518         }
2519 }
2520
2521 void _debug_req(struct ptlrpc_request *req,
2522                 struct libcfs_debug_msg_data *msgdata,
2523                 const char *fmt, ... )
2524 {
2525         int req_ok = req->rq_reqmsg != NULL;
2526         int rep_ok = req->rq_repmsg != NULL;
2527         lnet_nid_t nid = LNET_NID_ANY;
2528         va_list args;
2529
2530         if (ptlrpc_req_need_swab(req)) {
2531                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2532                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2533         }
2534
2535         if (req->rq_import && req->rq_import->imp_connection)
2536                 nid = req->rq_import->imp_connection->c_peer.nid;
2537         else if (req->rq_export && req->rq_export->exp_connection)
2538                 nid = req->rq_export->exp_connection->c_peer.nid;
2539
2540         va_start(args, fmt);
2541         libcfs_debug_vmsg2(msgdata, fmt, args,
2542                            " req@%p x%llu/t%lld(%lld) o%d->%s@%s:%d/%d"
2543                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2544                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2545                            req, req->rq_xid, req->rq_transno,
2546                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2547                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2548                            req->rq_import ?
2549                                 req->rq_import->imp_obd->obd_name :
2550                                 req->rq_export ?
2551                                         req->rq_export->exp_client_uuid.uuid :
2552                                         "<?>",
2553                            libcfs_nid2str(nid),
2554                            req->rq_request_portal, req->rq_reply_portal,
2555                            req->rq_reqlen, req->rq_replen,
2556                            req->rq_early_count, req->rq_timedout,
2557                            req->rq_deadline,
2558                            atomic_read(&req->rq_refcount),
2559                            DEBUG_REQ_FLAGS(req),
2560                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2561                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2562                            req->rq_status,
2563                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2564         va_end(args);
2565 }
2566 EXPORT_SYMBOL(_debug_req);
2567
2568 void lustre_swab_lustre_capa(struct lustre_capa *c)
2569 {
2570         lustre_swab_lu_fid(&c->lc_fid);
2571         __swab64s (&c->lc_opc);
2572         __swab64s (&c->lc_uid);
2573         __swab64s (&c->lc_gid);
2574         __swab32s (&c->lc_flags);
2575         __swab32s (&c->lc_keyid);
2576         __swab32s (&c->lc_timeout);
2577         __swab32s (&c->lc_expiry);
2578 }
2579
2580 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2581 {
2582         __swab64s (&k->lk_seq);
2583         __swab32s (&k->lk_keyid);
2584         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2585 }
2586
2587 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2588 {
2589         __swab32s(&state->hus_states);
2590         __swab32s(&state->hus_archive_id);
2591 }
2592
2593 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2594 {
2595         __swab32s(&hss->hss_valid);
2596         __swab64s(&hss->hss_setmask);
2597         __swab64s(&hss->hss_clearmask);
2598         __swab32s(&hss->hss_archive_id);
2599 }
2600
2601 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2602 {
2603         __swab64s(&extent->offset);
2604         __swab64s(&extent->length);
2605 }
2606
2607 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2608 {
2609         __swab32s(&action->hca_state);
2610         __swab32s(&action->hca_action);
2611         lustre_swab_hsm_extent(&action->hca_location);
2612 }
2613
2614 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2615 {
2616         lustre_swab_lu_fid(&hui->hui_fid);
2617         lustre_swab_hsm_extent(&hui->hui_extent);
2618 }
2619
2620 void lustre_swab_layout_intent(struct layout_intent *li)
2621 {
2622         __swab32s(&li->li_opc);
2623         __swab32s(&li->li_flags);
2624         __swab64s(&li->li_start);
2625         __swab64s(&li->li_end);
2626 }
2627
2628 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2629 {
2630         lustre_swab_lu_fid(&hpk->hpk_fid);
2631         __swab64s(&hpk->hpk_cookie);
2632         __swab64s(&hpk->hpk_extent.offset);
2633         __swab64s(&hpk->hpk_extent.length);
2634         __swab16s(&hpk->hpk_flags);
2635         __swab16s(&hpk->hpk_errval);
2636 }
2637
2638 void lustre_swab_hsm_request(struct hsm_request *hr)
2639 {
2640         __swab32s(&hr->hr_action);
2641         __swab32s(&hr->hr_archive_id);
2642         __swab64s(&hr->hr_flags);
2643         __swab32s(&hr->hr_itemcount);
2644         __swab32s(&hr->hr_data_len);
2645 }
2646
2647 void lustre_swab_object_update(struct object_update *ou)
2648 {
2649         struct object_update_param *param;
2650         size_t  i;
2651
2652         __swab16s(&ou->ou_type);
2653         __swab16s(&ou->ou_params_count);
2654         __swab32s(&ou->ou_result_size);
2655         __swab32s(&ou->ou_flags);
2656         __swab32s(&ou->ou_padding1);
2657         __swab64s(&ou->ou_batchid);
2658         lustre_swab_lu_fid(&ou->ou_fid);
2659         param = &ou->ou_params[0];
2660         for (i = 0; i < ou->ou_params_count; i++) {
2661                 __swab16s(&param->oup_len);
2662                 __swab16s(&param->oup_padding);
2663                 __swab32s(&param->oup_padding2);
2664                 param = (struct object_update_param *)((char *)param +
2665                          object_update_param_size(param));
2666         }
2667 }
2668
2669 void lustre_swab_object_update_request(struct object_update_request *our)
2670 {
2671         size_t i;
2672         __swab32s(&our->ourq_magic);
2673         __swab16s(&our->ourq_count);
2674         __swab16s(&our->ourq_padding);
2675         for (i = 0; i < our->ourq_count; i++) {
2676                 struct object_update *ou;
2677
2678                 ou = object_update_request_get(our, i, NULL);
2679                 if (ou == NULL)
2680                         return;
2681                 lustre_swab_object_update(ou);
2682         }
2683 }
2684
2685 void lustre_swab_object_update_result(struct object_update_result *our)
2686 {
2687         __swab32s(&our->our_rc);
2688         __swab16s(&our->our_datalen);
2689         __swab16s(&our->our_padding);
2690 }
2691
2692 void lustre_swab_object_update_reply(struct object_update_reply *our)
2693 {
2694         size_t i;
2695
2696         __swab32s(&our->ourp_magic);
2697         __swab16s(&our->ourp_count);
2698         __swab16s(&our->ourp_padding);
2699         for (i = 0; i < our->ourp_count; i++) {
2700                 struct object_update_result *ourp;
2701
2702                 __swab16s(&our->ourp_lens[i]);
2703                 ourp = object_update_result_get(our, i, NULL);
2704                 if (ourp == NULL)
2705                         return;
2706                 lustre_swab_object_update_result(ourp);
2707         }
2708 }
2709
2710 void lustre_swab_out_update_header(struct out_update_header *ouh)
2711 {
2712         __swab32s(&ouh->ouh_magic);
2713         __swab32s(&ouh->ouh_count);
2714         __swab32s(&ouh->ouh_inline_length);
2715         __swab32s(&ouh->ouh_reply_size);
2716 }
2717 EXPORT_SYMBOL(lustre_swab_out_update_header);
2718
2719 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2720 {
2721         __swab32s(&oub->oub_size);
2722         __swab32s(&oub->oub_padding);
2723 }
2724 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2725
2726 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2727 {
2728         __swab64s(&msl->msl_flags);
2729 }
2730
2731 void lustre_swab_close_data(struct close_data *cd)
2732 {
2733         lustre_swab_lu_fid(&cd->cd_fid);
2734         __swab64s(&cd->cd_data_version);
2735 }
2736
2737 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2738 {
2739         __swab32s(&lr->lr_event);
2740         __swab32s(&lr->lr_index);
2741         __swab32s(&lr->lr_flags);
2742         __swab32s(&lr->lr_valid);
2743         __swab32s(&lr->lr_speed);
2744         __swab16s(&lr->lr_version);
2745         __swab16s(&lr->lr_active);
2746         __swab16s(&lr->lr_param);
2747         __swab16s(&lr->lr_async_windows);
2748         __swab32s(&lr->lr_flags);
2749         lustre_swab_lu_fid(&lr->lr_fid);
2750         lustre_swab_lu_fid(&lr->lr_fid2);
2751         __swab32s(&lr->lr_comp_id);
2752         CLASSERT(offsetof(typeof(*lr), lr_padding_0) != 0);
2753         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2754         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2755         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2756 }
2757
2758 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2759 {
2760         __swab32s(&lr->lr_status);
2761         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2762         __swab64s(&lr->lr_repaired);
2763 }
2764
2765 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
2766 {
2767         lustre_swab_lu_fid(&rec->lor_fid);
2768         __swab32s(&rec->lor_uid);
2769         __swab32s(&rec->lor_gid);
2770 }
2771
2772 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2773 {
2774         lustre_swab_lu_fid(&ent->loe_key);
2775         lustre_swab_orphan_rec(&ent->loe_rec);
2776 }
2777 EXPORT_SYMBOL(lustre_swab_orphan_ent);
2778
2779 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
2780 {
2781         lustre_swab_lu_fid(&ent->loe_key);
2782         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2783         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2784         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding) != 0);
2785 }
2786 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
2787
2788 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
2789 {
2790         __swab16s(&ladvise->lla_advice);
2791         __swab16s(&ladvise->lla_value1);
2792         __swab32s(&ladvise->lla_value2);
2793         __swab64s(&ladvise->lla_start);
2794         __swab64s(&ladvise->lla_end);
2795         __swab32s(&ladvise->lla_value3);
2796         __swab32s(&ladvise->lla_value4);
2797 }
2798 EXPORT_SYMBOL(lustre_swab_ladvise);
2799
2800 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
2801 {
2802         __swab32s(&ladvise_hdr->lah_magic);
2803         __swab32s(&ladvise_hdr->lah_count);
2804         __swab64s(&ladvise_hdr->lah_flags);
2805         __swab32s(&ladvise_hdr->lah_value1);
2806         __swab32s(&ladvise_hdr->lah_value2);
2807         __swab64s(&ladvise_hdr->lah_value3);
2808 }
2809 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);