lustre/ptlrpc/pack_generic.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2014, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/ptlrpc/pack_generic.c
  37  *
  38  * (Un)packing of OST requests
  39  *
  40  * Author: Peter J. Braam <braam@clusterfs.com>
  41  * Author: Phil Schwan <phil@clusterfs.com>
  42  * Author: Eric Barton <eeb@clusterfs.com>
  43  */
  44
  45 #define DEBUG_SUBSYSTEM S_RPC
  46
  47 #include <libcfs/libcfs.h>
  48
  49 #include <obd_support.h>
  50 #include <obd_class.h>
  51 #include <lustre_net.h>
  52 #include <obd_cksum.h>
  53 #include <lustre/ll_fiemap.h>
  54
  55 #include "ptlrpc_internal.h"
  56
  57 static inline __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         switch (msg->lm_magic) {
 104         case LUSTRE_MSG_MAGIC_V1:
 105                 CERROR("msg v1 not supported - please upgrade you system\n");
 106                 return -EINVAL;
 107         case LUSTRE_MSG_MAGIC_V2:
 108                 return lustre_msg_check_version_v2(msg, version);
 109         default:
 110                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 111                 return 0;
 112         }
 113 }
 114
 115 /* early reply size */
 116 __u32 lustre_msg_early_size()
 117 {
 118         static __u32 size;
 119         if (!size) {
 120                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 121                  * with the old client (< 2.3) which doesn't have pb_jobid
 122                  * in the ptlrpc_body.
 123                  *
 124                  * XXX Remove this whenever we dorp interoprability with such
 125                  *     client.
 126                  */
 127                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 128                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 129         }
 130         return size;
 131 }
 132 EXPORT_SYMBOL(lustre_msg_early_size);
 133
 134 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
 135 {
 136         __u32 size;
 137         int i;
 138
 139         size = lustre_msg_hdr_size_v2(count);
 140         for (i = 0; i < count; i++)
 141                 size += cfs_size_round(lengths[i]);
 142
 143         return size;
 144 }
 145 EXPORT_SYMBOL(lustre_msg_size_v2);
 146
 147 /* This returns the size of the buffer that is required to hold a lustre_msg
 148  * with the given sub-buffer lengths.
 149  * NOTE: this should only be used for NEW requests, and should always be
 150  *       in the form of a v2 request.  If this is a connection to a v1
 151  *       target then the first buffer will be stripped because the ptlrpc
 152  *       data is part of the lustre_msg_v1 header. b=14043 */
 153 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
 154 {
 155         __u32 size[] = { sizeof(struct ptlrpc_body) };
 156
 157         if (!lens) {
 158                 LASSERT(count == 1);
 159                 lens = size;
 160         }
 161
 162         LASSERT(count > 0);
 163         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 164
 165         switch (magic) {
 166         case LUSTRE_MSG_MAGIC_V2:
 167                 return lustre_msg_size_v2(count, lens);
 168         default:
 169                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 170                 return 0;
 171         }
 172 }
 173
 174 /* This is used to determine the size of a buffer that was already packed
 175  * and will correctly handle the different message formats. */
 176 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
 177 {
 178         switch (msg->lm_magic) {
 179         case LUSTRE_MSG_MAGIC_V2:
 180                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 181         default:
 182                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 183                 return 0;
 184         }
 185 }
 186
 187 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 188                         char **bufs)
 189 {
 190         char *ptr;
 191         int i;
 192
 193         msg->lm_bufcount = count;
 194         /* XXX: lm_secflvr uninitialized here */
 195         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 196
 197         for (i = 0; i < count; i++)
 198                 msg->lm_buflens[i] = lens[i];
 199
 200         if (bufs == NULL)
 201                 return;
 202
 203         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 204         for (i = 0; i < count; i++) {
 205                 char *tmp = bufs[i];
 206                 LOGL(tmp, lens[i], ptr);
 207         }
 208 }
 209 EXPORT_SYMBOL(lustre_init_msg_v2);
 210
 211 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 212                                   int count, __u32 *lens, char **bufs)
 213 {
 214         int reqlen, rc;
 215
 216         reqlen = lustre_msg_size_v2(count, lens);
 217
 218         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 219         if (rc)
 220                 return rc;
 221
 222         req->rq_reqlen = reqlen;
 223
 224         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 225         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 226         return 0;
 227 }
 228
 229 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 230                         __u32 *lens, char **bufs)
 231 {
 232         __u32 size[] = { sizeof(struct ptlrpc_body) };
 233
 234         if (!lens) {
 235                 LASSERT(count == 1);
 236                 lens = size;
 237         }
 238
 239         LASSERT(count > 0);
 240         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 241
 242         /* only use new format, we don't need to be compatible with 1.4 */
 243         magic = LUSTRE_MSG_MAGIC_V2;
 244
 245         switch (magic) {
 246         case LUSTRE_MSG_MAGIC_V2:
 247                 return lustre_pack_request_v2(req, count, lens, bufs);
 248         default:
 249                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 250                 return -EINVAL;
 251         }
 252 }
 253
 254 #if RS_DEBUG
 255 struct list_head ptlrpc_rs_debug_lru =
 256         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 257 spinlock_t ptlrpc_rs_debug_lock;
 258
 259 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 260 do {                                                                    \
 261         spin_lock(&ptlrpc_rs_debug_lock);                               \
 262         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 263         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 264 } while (0)
 265
 266 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 267 do {                                                                    \
 268         spin_lock(&ptlrpc_rs_debug_lock);                               \
 269         list_del(&(rs)->rs_debug_list);                         \
 270         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 271 } while (0)
 272 #else
 273 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 274 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 275 #endif
 276
 277 struct ptlrpc_reply_state *
 278 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 279 {
 280         struct ptlrpc_reply_state *rs = NULL;
 281
 282         spin_lock(&svcpt->scp_rep_lock);
 283
 284         /* See if we have anything in a pool, and wait if nothing */
 285         while (list_empty(&svcpt->scp_rep_idle)) {
 286                 struct l_wait_info      lwi;
 287                 int                     rc;
 288
 289                 spin_unlock(&svcpt->scp_rep_lock);
 290                 /* If we cannot get anything for some long time, we better
 291                  * bail out instead of waiting infinitely */
 292                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 293                 rc = l_wait_event(svcpt->scp_rep_waitq,
 294                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 295                 if (rc != 0)
 296                         goto out;
 297                 spin_lock(&svcpt->scp_rep_lock);
 298         }
 299
 300         rs = list_entry(svcpt->scp_rep_idle.next,
 301                             struct ptlrpc_reply_state, rs_list);
 302         list_del(&rs->rs_list);
 303
 304         spin_unlock(&svcpt->scp_rep_lock);
 305
 306         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 307         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 308         rs->rs_svcpt = svcpt;
 309         rs->rs_prealloc = 1;
 310 out:
 311         return rs;
 312 }
 313
 314 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 315 {
 316         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 317
 318         spin_lock(&svcpt->scp_rep_lock);
 319         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 320         spin_unlock(&svcpt->scp_rep_lock);
 321         wake_up(&svcpt->scp_rep_waitq);
 322 }
 323
 324 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 325                          __u32 *lens, char **bufs, int flags)
 326 {
 327         struct ptlrpc_reply_state *rs;
 328         int                        msg_len, rc;
 329         ENTRY;
 330
 331         LASSERT(req->rq_reply_state == NULL);
 332
 333         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 334                 spin_lock(&req->rq_lock);
 335                 req->rq_packed_final = 1;
 336                 spin_unlock(&req->rq_lock);
 337         }
 338
 339         msg_len = lustre_msg_size_v2(count, lens);
 340         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 341         if (rc)
 342                 RETURN(rc);
 343
 344         rs = req->rq_reply_state;
 345         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 346         rs->rs_cb_id.cbid_fn = reply_out_callback;
 347         rs->rs_cb_id.cbid_arg = rs;
 348         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 349         INIT_LIST_HEAD(&rs->rs_exp_list);
 350         INIT_LIST_HEAD(&rs->rs_obd_list);
 351         INIT_LIST_HEAD(&rs->rs_list);
 352         spin_lock_init(&rs->rs_lock);
 353
 354         req->rq_replen = msg_len;
 355         req->rq_reply_state = rs;
 356         req->rq_repmsg = rs->rs_msg;
 357
 358         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 359         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 360
 361         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 362
 363         RETURN(0);
 364 }
 365 EXPORT_SYMBOL(lustre_pack_reply_v2);
 366
 367 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 368                             char **bufs, int flags)
 369 {
 370         int rc = 0;
 371         __u32 size[] = { sizeof(struct ptlrpc_body) };
 372
 373         if (!lens) {
 374                 LASSERT(count == 1);
 375                 lens = size;
 376         }
 377
 378         LASSERT(count > 0);
 379         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 380
 381         switch (req->rq_reqmsg->lm_magic) {
 382         case LUSTRE_MSG_MAGIC_V2:
 383                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 384                 break;
 385         default:
 386                 LASSERTF(0, "incorrect message magic: %08x\n",
 387                          req->rq_reqmsg->lm_magic);
 388                 rc = -EINVAL;
 389         }
 390         if (rc != 0)
 391                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 392                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 393         return rc;
 394 }
 395
 396 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 397                       char **bufs)
 398 {
 399         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 400 }
 401 EXPORT_SYMBOL(lustre_pack_reply);
 402
 403 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
 404 {
 405         __u32 i, offset, buflen, bufcount;
 406
 407         LASSERT(m != NULL);
 408
 409         bufcount = m->lm_bufcount;
 410         if (unlikely(n >= bufcount)) {
 411                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 412                        m, n, bufcount);
 413                 return NULL;
 414         }
 415
 416         buflen = m->lm_buflens[n];
 417         if (unlikely(buflen < min_size)) {
 418                 CERROR("msg %p buffer[%d] size %d too small "
 419                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 420                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 421                 return NULL;
 422         }
 423
 424         offset = lustre_msg_hdr_size_v2(bufcount);
 425         for (i = 0; i < n; i++)
 426                 offset += cfs_size_round(m->lm_buflens[i]);
 427
 428         return (char *)m + offset;
 429 }
 430
 431 void *lustre_msg_buf(struct lustre_msg *m, __u32 n, __u32 min_size)
 432 {
 433         switch (m->lm_magic) {
 434         case LUSTRE_MSG_MAGIC_V2:
 435                 return lustre_msg_buf_v2(m, n, min_size);
 436         default:
 437                 LASSERTF(0, "incorrect message magic: %08x(msg:%p)\n", m->lm_magic, m);
 438                 return NULL;
 439         }
 440 }
 441 EXPORT_SYMBOL(lustre_msg_buf);
 442
 443 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
 444                                 unsigned int newlen, int move_data)
 445 {
 446         char   *tail = NULL, *newpos;
 447         int     tail_len = 0, n;
 448
 449         LASSERT(msg);
 450         LASSERT(msg->lm_bufcount > segment);
 451         LASSERT(msg->lm_buflens[segment] >= newlen);
 452
 453         if (msg->lm_buflens[segment] == newlen)
 454                 goto out;
 455
 456         if (move_data && msg->lm_bufcount > segment + 1) {
 457                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 458                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 459                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 460         }
 461
 462         msg->lm_buflens[segment] = newlen;
 463
 464         if (tail && tail_len) {
 465                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 466                 LASSERT(newpos <= tail);
 467                 if (newpos != tail)
 468                         memmove(newpos, tail, tail_len);
 469         }
 470 out:
 471         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 472 }
 473
 474 /*
 475  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 476  * we also move data forward from @segment + 1.
 477  *
 478  * if @newlen == 0, we remove the segment completely, but we still keep the
 479  * totally bufcount the same to save possible data moving. this will leave a
 480  * unused segment with size 0 at the tail, but that's ok.
 481  *
 482  * return new msg size after shrinking.
 483  *
 484  * CAUTION:
 485  * + if any buffers higher than @segment has been filled in, must call shrink
 486  *   with non-zero @move_data.
 487  * + caller should NOT keep pointers to msg buffers which higher than @segment
 488  *   after call shrink.
 489  */
 490 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 491                       unsigned int newlen, int move_data)
 492 {
 493         switch (msg->lm_magic) {
 494         case LUSTRE_MSG_MAGIC_V2:
 495                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 496         default:
 497                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 498         }
 499 }
 500 EXPORT_SYMBOL(lustre_shrink_msg);
 501
 502 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 503 {
 504         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 505
 506         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 507         LASSERT(!rs->rs_difficult || rs->rs_handled);
 508         LASSERT(!rs->rs_on_net);
 509         LASSERT(!rs->rs_scheduled);
 510         LASSERT(rs->rs_export == NULL);
 511         LASSERT(rs->rs_nlocks == 0);
 512         LASSERT(list_empty(&rs->rs_exp_list));
 513         LASSERT(list_empty(&rs->rs_obd_list));
 514
 515         sptlrpc_svc_free_rs(rs);
 516 }
 517
 518 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 519 {
 520         int swabbed, required_len, i;
 521
 522         /* Now we know the sender speaks my language. */
 523         required_len = lustre_msg_hdr_size_v2(0);
 524         if (len < required_len) {
 525                 /* can't even look inside the message */
 526                 CERROR("message length %d too small for lustre_msg\n", len);
 527                 return -EINVAL;
 528         }
 529
 530         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 531
 532         if (swabbed) {
 533                 __swab32s(&m->lm_magic);
 534                 __swab32s(&m->lm_bufcount);
 535                 __swab32s(&m->lm_secflvr);
 536                 __swab32s(&m->lm_repsize);
 537                 __swab32s(&m->lm_cksum);
 538                 __swab32s(&m->lm_flags);
 539                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 540                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 541         }
 542
 543         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 544         if (len < required_len) {
 545                 /* didn't receive all the buffer lengths */
 546                 CERROR ("message length %d too small for %d buflens\n",
 547                         len, m->lm_bufcount);
 548                 return -EINVAL;
 549         }
 550
 551         for (i = 0; i < m->lm_bufcount; i++) {
 552                 if (swabbed)
 553                         __swab32s(&m->lm_buflens[i]);
 554                 required_len += cfs_size_round(m->lm_buflens[i]);
 555         }
 556
 557         if (len < required_len) {
 558                 CERROR("len: %d, required_len %d\n", len, required_len);
 559                 CERROR("bufcount: %d\n", m->lm_bufcount);
 560                 for (i = 0; i < m->lm_bufcount; i++)
 561                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 562                 return -EINVAL;
 563         }
 564
 565         return swabbed;
 566 }
 567
 568 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 569 {
 570         int required_len, rc;
 571         ENTRY;
 572
 573         /* We can provide a slightly better error log, if we check the
 574          * message magic and version first.  In the future, struct
 575          * lustre_msg may grow, and we'd like to log a version mismatch,
 576          * rather than a short message.
 577          *
 578          */
 579         required_len = offsetof(struct lustre_msg, lm_magic) +
 580                        sizeof(m->lm_magic);
 581         if (len < required_len) {
 582                 /* can't even look inside the message */
 583                 CERROR("message length %d too small for magic/version check\n",
 584                        len);
 585                 RETURN(-EINVAL);
 586         }
 587
 588         rc = lustre_unpack_msg_v2(m, len);
 589
 590         RETURN(rc);
 591 }
 592 EXPORT_SYMBOL(__lustre_unpack_msg);
 593
 594 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 595 {
 596         int rc;
 597         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 598         if (rc == 1) {
 599                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 600                 rc = 0;
 601         }
 602         return rc;
 603 }
 604
 605 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 606 {
 607         int rc;
 608         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 609         if (rc == 1) {
 610                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 611                 rc = 0;
 612         }
 613         return rc;
 614 }
 615
 616 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 617                                                const int inout, int offset)
 618 {
 619         struct ptlrpc_body *pb;
 620         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 621
 622         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 623         if (!pb) {
 624                 CERROR("error unpacking ptlrpc body\n");
 625                 return -EFAULT;
 626         }
 627         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 628                 lustre_swab_ptlrpc_body(pb);
 629                 ptlrpc_buf_set_swabbed(req, inout, offset);
 630         }
 631
 632         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 633                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 634                  return -EINVAL;
 635         }
 636
 637         if (!inout)
 638                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 639
 640         return 0;
 641 }
 642
 643 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 644 {
 645         switch (req->rq_reqmsg->lm_magic) {
 646         case LUSTRE_MSG_MAGIC_V2:
 647                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 648         default:
 649                 CERROR("bad lustre msg magic: %08x\n",
 650                        req->rq_reqmsg->lm_magic);
 651                 return -EINVAL;
 652         }
 653 }
 654
 655 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 656 {
 657         switch (req->rq_repmsg->lm_magic) {
 658         case LUSTRE_MSG_MAGIC_V2:
 659                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 660         default:
 661                 CERROR("bad lustre msg magic: %08x\n",
 662                        req->rq_repmsg->lm_magic);
 663                 return -EINVAL;
 664         }
 665 }
 666
 667 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
 668 {
 669         if (n >= m->lm_bufcount)
 670                 return 0;
 671
 672         return m->lm_buflens[n];
 673 }
 674
 675 /**
 676  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 677  * \param m lustre_msg (request or reply) to look at
 678  * \param n message index (base 0)
 679  *
 680  * returns zero for non-existent message indices
 681  */
 682 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
 683 {
 684         switch (m->lm_magic) {
 685         case LUSTRE_MSG_MAGIC_V2:
 686                 return lustre_msg_buflen_v2(m, n);
 687         default:
 688                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 689                 return 0;
 690         }
 691 }
 692 EXPORT_SYMBOL(lustre_msg_buflen);
 693
 694 static inline void
 695 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
 696 {
 697         if (n >= m->lm_bufcount)
 698                 LBUG();
 699
 700         m->lm_buflens[n] = len;
 701 }
 702
 703 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
 704 {
 705         switch (m->lm_magic) {
 706         case LUSTRE_MSG_MAGIC_V2:
 707                 lustre_msg_set_buflen_v2(m, n, len);
 708                 return;
 709         default:
 710                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 711         }
 712 }
 713
 714 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 715  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 716 __u32 lustre_msg_bufcount(struct lustre_msg *m)
 717 {
 718         switch (m->lm_magic) {
 719         case LUSTRE_MSG_MAGIC_V2:
 720                 return m->lm_bufcount;
 721         default:
 722                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 723                 return 0;
 724         }
 725 }
 726
 727 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
 728 {
 729         /* max_len == 0 means the string should fill the buffer */
 730         char *str;
 731         __u32 slen, blen;
 732
 733         switch (m->lm_magic) {
 734         case LUSTRE_MSG_MAGIC_V2:
 735                 str = lustre_msg_buf_v2(m, index, 0);
 736                 blen = lustre_msg_buflen_v2(m, index);
 737                 break;
 738         default:
 739                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 740         }
 741
 742         if (str == NULL) {
 743                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 744                 return NULL;
 745         }
 746
 747         slen = strnlen(str, blen);
 748
 749         if (slen == blen) {                     /* not NULL terminated */
 750                 CERROR("can't unpack non-NULL terminated string in "
 751                         "msg %p buffer[%d] len %d\n", m, index, blen);
 752                 return NULL;
 753         }
 754
 755         if (max_len == 0) {
 756                 if (slen != blen - 1) {
 757                         CERROR("can't unpack short string in msg %p "
 758                                "buffer[%d] len %d: strlen %d\n",
 759                                m, index, blen, slen);
 760                         return NULL;
 761                 }
 762         } else if (slen > max_len) {
 763                 CERROR("can't unpack oversized string in msg %p "
 764                        "buffer[%d] len %d strlen %d: max %d expected\n",
 765                        m, index, blen, slen, max_len);
 766                 return NULL;
 767         }
 768
 769         return str;
 770 }
 771
 772 /* Wrap up the normal fixed length cases */
 773 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
 774                                       __u32 min_size, void *swabber)
 775 {
 776         void *ptr = NULL;
 777
 778         LASSERT(msg != NULL);
 779         switch (msg->lm_magic) {
 780         case LUSTRE_MSG_MAGIC_V2:
 781                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 782                 break;
 783         default:
 784                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 785         }
 786
 787         if (ptr && swabber)
 788                 ((void (*)(void *))swabber)(ptr);
 789
 790         return ptr;
 791 }
 792
 793 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 794 {
 795         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 796                                  sizeof(struct ptlrpc_body_v2));
 797 }
 798
 799 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
 800 {
 801         switch (msg->lm_magic) {
 802         case LUSTRE_MSG_MAGIC_V1:
 803         case LUSTRE_MSG_MAGIC_V1_SWABBED:
 804                 return 0;
 805         case LUSTRE_MSG_MAGIC_V2:
 806                 /* already in host endian */
 807                 return msg->lm_flags;
 808         default:
 809                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 810                 return 0;
 811         }
 812 }
 813 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 814
 815 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 816 {
 817         switch (msg->lm_magic) {
 818         case LUSTRE_MSG_MAGIC_V1:
 819                 return;
 820         case LUSTRE_MSG_MAGIC_V2:
 821                 msg->lm_flags = flags;
 822                 return;
 823         default:
 824                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 825         }
 826 }
 827
 828 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 829 {
 830         switch (msg->lm_magic) {
 831         case LUSTRE_MSG_MAGIC_V2: {
 832                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 833                 if (!pb) {
 834                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 835                         return 0;
 836                 }
 837                 return pb->pb_flags;
 838         }
 839         default:
 840                 /* flags might be printed in debug code while message
 841                  * uninitialized */
 842                 return 0;
 843         }
 844 }
 845 EXPORT_SYMBOL(lustre_msg_get_flags);
 846
 847 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
 848 {
 849         switch (msg->lm_magic) {
 850         case LUSTRE_MSG_MAGIC_V2: {
 851                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 852                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 853                 pb->pb_flags |= flags;
 854                 return;
 855         }
 856         default:
 857                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 858         }
 859 }
 860 EXPORT_SYMBOL(lustre_msg_add_flags);
 861
 862 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
 863 {
 864         switch (msg->lm_magic) {
 865         case LUSTRE_MSG_MAGIC_V2: {
 866                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 867                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 868                 pb->pb_flags = flags;
 869                 return;
 870         }
 871         default:
 872                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 873         }
 874 }
 875
 876 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
 877 {
 878         switch (msg->lm_magic) {
 879         case LUSTRE_MSG_MAGIC_V2: {
 880                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 881                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 882                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
 883                 return;
 884         }
 885         default:
 886                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 887         }
 888 }
 889 EXPORT_SYMBOL(lustre_msg_clear_flags);
 890
 891 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 892 {
 893         switch (msg->lm_magic) {
 894         case LUSTRE_MSG_MAGIC_V2: {
 895                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 896                 if (!pb) {
 897                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 898                         return 0;
 899                 }
 900                 return pb->pb_op_flags;
 901         }
 902         default:
 903                 return 0;
 904         }
 905 }
 906
 907 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
 908 {
 909         switch (msg->lm_magic) {
 910         case LUSTRE_MSG_MAGIC_V2: {
 911                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 912                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 913                 pb->pb_op_flags |= flags;
 914                 return;
 915         }
 916         default:
 917                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 918         }
 919 }
 920 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 921
 922 void lustre_msg_set_op_flags(struct lustre_msg *msg, __u32 flags)
 923 {
 924         switch (msg->lm_magic) {
 925         case LUSTRE_MSG_MAGIC_V2: {
 926                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 927                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 928                 pb->pb_op_flags |= flags;
 929                 return;
 930         }
 931         default:
 932                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 933         }
 934 }
 935
 936 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 937 {
 938         switch (msg->lm_magic) {
 939         case LUSTRE_MSG_MAGIC_V2: {
 940                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 941                 if (!pb) {
 942                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 943                         return NULL;
 944                 }
 945                 return &pb->pb_handle;
 946         }
 947         default:
 948                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 949                 return NULL;
 950         }
 951 }
 952
 953 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 954 {
 955         switch (msg->lm_magic) {
 956         case LUSTRE_MSG_MAGIC_V2: {
 957                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 958                 if (!pb) {
 959                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 960                         return PTL_RPC_MSG_ERR;
 961                 }
 962                 return pb->pb_type;
 963         }
 964         default:
 965                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 966                 return PTL_RPC_MSG_ERR;
 967         }
 968 }
 969 EXPORT_SYMBOL(lustre_msg_get_type);
 970
 971 __u32 lustre_msg_get_version(struct lustre_msg *msg)
 972 {
 973         switch (msg->lm_magic) {
 974         case LUSTRE_MSG_MAGIC_V2: {
 975                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 976                 if (!pb) {
 977                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 978                         return 0;
 979                 }
 980                 return pb->pb_version;
 981         }
 982         default:
 983                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 984                 return 0;
 985         }
 986 }
 987
 988 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
 989 {
 990         switch (msg->lm_magic) {
 991         case LUSTRE_MSG_MAGIC_V2: {
 992                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 993                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 994                 pb->pb_version |= version;
 995                 return;
 996         }
 997         default:
 998                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 999         }
1000 }
1001
1002 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1003 {
1004         switch (msg->lm_magic) {
1005         case LUSTRE_MSG_MAGIC_V2: {
1006                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1007                 if (!pb) {
1008                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1009                         return 0;
1010                 }
1011                 return pb->pb_opc;
1012         }
1013         default:
1014                 CERROR("incorrect message magic: %08x(msg:%p)\n", msg->lm_magic, msg);
1015                 LBUG();
1016                 return 0;
1017         }
1018 }
1019 EXPORT_SYMBOL(lustre_msg_get_opc);
1020
1021 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1022 {
1023         switch (msg->lm_magic) {
1024         case LUSTRE_MSG_MAGIC_V2: {
1025                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1026                 if (!pb) {
1027                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1028                         return 0;
1029                 }
1030                 return pb->pb_last_xid;
1031         }
1032         default:
1033                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1034                 return 0;
1035         }
1036 }
1037 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1038
1039 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1040 {
1041         switch (msg->lm_magic) {
1042         case LUSTRE_MSG_MAGIC_V2: {
1043                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1044                 if (!pb) {
1045                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1046                         return 0;
1047                 }
1048                 return pb->pb_tag;
1049         }
1050         default:
1051                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1052                 return 0;
1053         }
1054 }
1055 EXPORT_SYMBOL(lustre_msg_get_tag);
1056
1057 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1058 {
1059         switch (msg->lm_magic) {
1060         case LUSTRE_MSG_MAGIC_V2: {
1061                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1062                 if (!pb) {
1063                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1064                         return 0;
1065                 }
1066                 return pb->pb_last_committed;
1067         }
1068         default:
1069                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1070                 return 0;
1071         }
1072 }
1073 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1074
1075 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1076 {
1077         switch (msg->lm_magic) {
1078         case LUSTRE_MSG_MAGIC_V1:
1079                 return NULL;
1080         case LUSTRE_MSG_MAGIC_V2: {
1081                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1082                 if (!pb) {
1083                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1084                         return NULL;
1085                 }
1086                 return pb->pb_pre_versions;
1087         }
1088         default:
1089                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1090                 return NULL;
1091         }
1092 }
1093 EXPORT_SYMBOL(lustre_msg_get_versions);
1094
1095 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1096 {
1097         switch (msg->lm_magic) {
1098         case LUSTRE_MSG_MAGIC_V2: {
1099                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1100                 if (!pb) {
1101                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1102                         return 0;
1103                 }
1104                 return pb->pb_transno;
1105         }
1106         default:
1107                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1108                 return 0;
1109         }
1110 }
1111 EXPORT_SYMBOL(lustre_msg_get_transno);
1112
1113 int lustre_msg_get_status(struct lustre_msg *msg)
1114 {
1115         switch (msg->lm_magic) {
1116         case LUSTRE_MSG_MAGIC_V2: {
1117                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1118                 if (!pb) {
1119                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1120                         return -EINVAL;
1121                 }
1122                 return pb->pb_status;
1123         }
1124         default:
1125                 /* status might be printed in debug code while message
1126                  * uninitialized */
1127                 return -EINVAL;
1128         }
1129 }
1130 EXPORT_SYMBOL(lustre_msg_get_status);
1131
1132 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1133 {
1134         switch (msg->lm_magic) {
1135         case LUSTRE_MSG_MAGIC_V2: {
1136                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1137                 if (!pb) {
1138                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1139                         return -EINVAL;
1140                 }
1141                 return pb->pb_slv;
1142         }
1143         default:
1144                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1145                 return -EINVAL;
1146         }
1147 }
1148
1149
1150 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1151 {
1152         switch (msg->lm_magic) {
1153         case LUSTRE_MSG_MAGIC_V2: {
1154                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1155                 if (!pb) {
1156                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1157                         return;
1158                 }
1159                 pb->pb_slv = slv;
1160                 return;
1161         }
1162         default:
1163                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1164                 return;
1165         }
1166 }
1167
1168 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1169 {
1170         switch (msg->lm_magic) {
1171         case LUSTRE_MSG_MAGIC_V2: {
1172                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1173                 if (!pb) {
1174                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1175                         return -EINVAL;
1176                 }
1177                 return pb->pb_limit;
1178         }
1179         default:
1180                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1181                 return -EINVAL;
1182         }
1183 }
1184
1185
1186 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1187 {
1188         switch (msg->lm_magic) {
1189         case LUSTRE_MSG_MAGIC_V2: {
1190                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1191                 if (!pb) {
1192                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1193                         return;
1194                 }
1195                 pb->pb_limit = limit;
1196                 return;
1197         }
1198         default:
1199                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1200                 return;
1201         }
1202 }
1203
1204 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1205 {
1206         switch (msg->lm_magic) {
1207         case LUSTRE_MSG_MAGIC_V2: {
1208                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1209                 if (!pb) {
1210                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1211                         return 0;
1212                 }
1213                 return pb->pb_conn_cnt;
1214         }
1215         default:
1216                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1217                 return 0;
1218         }
1219 }
1220 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1221
1222 int lustre_msg_is_v1(struct lustre_msg *msg)
1223 {
1224         switch (msg->lm_magic) {
1225         case LUSTRE_MSG_MAGIC_V1:
1226         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1227                 return 1;
1228         default:
1229                 return 0;
1230         }
1231 }
1232
1233 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1234 {
1235         switch (msg->lm_magic) {
1236         case LUSTRE_MSG_MAGIC_V2:
1237                 return msg->lm_magic;
1238         default:
1239                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1240                 return 0;
1241         }
1242 }
1243
1244 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1245 {
1246         switch (msg->lm_magic) {
1247         case LUSTRE_MSG_MAGIC_V1:
1248         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1249                 return 0;
1250         case LUSTRE_MSG_MAGIC_V2: {
1251                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1252                 if (!pb) {
1253                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1254                         return 0;
1255
1256                 }
1257                 return pb->pb_timeout;
1258         }
1259         default:
1260                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1261                 return 0;
1262         }
1263 }
1264
1265 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1266 {
1267         switch (msg->lm_magic) {
1268         case LUSTRE_MSG_MAGIC_V1:
1269         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1270                 return 0;
1271         case LUSTRE_MSG_MAGIC_V2: {
1272                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1273                 if (!pb) {
1274                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1275                         return 0;
1276
1277                 }
1278                 return pb->pb_service_time;
1279         }
1280         default:
1281                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1282                 return 0;
1283         }
1284 }
1285
1286 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1287 {
1288         switch (msg->lm_magic) {
1289         case LUSTRE_MSG_MAGIC_V1:
1290         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1291                 return NULL;
1292         case LUSTRE_MSG_MAGIC_V2: {
1293                 struct ptlrpc_body *pb =
1294                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1295                                           sizeof(struct ptlrpc_body));
1296                 if (!pb)
1297                         return NULL;
1298
1299                 return pb->pb_jobid;
1300         }
1301         default:
1302                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1303                 return NULL;
1304         }
1305 }
1306 EXPORT_SYMBOL(lustre_msg_get_jobid);
1307
1308 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1309 {
1310         switch (msg->lm_magic) {
1311         case LUSTRE_MSG_MAGIC_V2:
1312                 return msg->lm_cksum;
1313         default:
1314                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1315                 return 0;
1316         }
1317 }
1318
1319 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 53, 0)
1320 /*
1321  * In 1.6 and 1.8 the checksum was computed only on struct ptlrpc_body as
1322  * it was in 1.6 (88 bytes, smaller than the full size in 1.8).  It makes
1323  * more sense to compute the checksum on the full ptlrpc_body, regardless
1324  * of what size it is, but in order to keep interoperability with 1.8 we
1325  * can optionally also checksum only the first 88 bytes (caller decides). */
1326 # define ptlrpc_body_cksum_size_compat18         88
1327
1328 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg, int compat18)
1329 #else
1330 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1331 #endif
1332 {
1333         switch (msg->lm_magic) {
1334         case LUSTRE_MSG_MAGIC_V2: {
1335                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1336 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 53, 0)
1337                 __u32 len = compat18 ? ptlrpc_body_cksum_size_compat18 :
1338                             lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1339 #else
1340                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1341 #endif
1342                 unsigned int hsize = 4;
1343                 __u32 crc;
1344
1345                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1346                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1347                                        len, NULL, 0, (unsigned char *)&crc,
1348                                        &hsize);
1349                 return crc;
1350         }
1351         default:
1352                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1353                 return 0;
1354         }
1355 }
1356
1357 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1358 {
1359         switch (msg->lm_magic) {
1360         case LUSTRE_MSG_MAGIC_V2: {
1361                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1362                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1363                 pb->pb_handle = *handle;
1364                 return;
1365         }
1366         default:
1367                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1368         }
1369 }
1370
1371 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1372 {
1373         switch (msg->lm_magic) {
1374         case LUSTRE_MSG_MAGIC_V2: {
1375                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1376                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1377                 pb->pb_type = type;
1378                 return;
1379         }
1380         default:
1381                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1382         }
1383 }
1384
1385 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1386 {
1387         switch (msg->lm_magic) {
1388         case LUSTRE_MSG_MAGIC_V2: {
1389                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1390                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1391                 pb->pb_opc = opc;
1392                 return;
1393         }
1394         default:
1395                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1396         }
1397 }
1398
1399 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1400 {
1401         switch (msg->lm_magic) {
1402         case LUSTRE_MSG_MAGIC_V2: {
1403                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1404                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1405                 pb->pb_last_xid = last_xid;
1406                 return;
1407         }
1408         default:
1409                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1410         }
1411 }
1412 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1413
1414 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1415 {
1416         switch (msg->lm_magic) {
1417         case LUSTRE_MSG_MAGIC_V2: {
1418                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1419                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1420                 pb->pb_tag = tag;
1421                 return;
1422         }
1423         default:
1424                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1425         }
1426 }
1427 EXPORT_SYMBOL(lustre_msg_set_tag);
1428
1429 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1430 {
1431         switch (msg->lm_magic) {
1432         case LUSTRE_MSG_MAGIC_V2: {
1433                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1434                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1435                 pb->pb_last_committed = last_committed;
1436                 return;
1437         }
1438         default:
1439                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1440         }
1441 }
1442
1443 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1444 {
1445         switch (msg->lm_magic) {
1446         case LUSTRE_MSG_MAGIC_V1:
1447                 return;
1448         case LUSTRE_MSG_MAGIC_V2: {
1449                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1450                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1451                 pb->pb_pre_versions[0] = versions[0];
1452                 pb->pb_pre_versions[1] = versions[1];
1453                 pb->pb_pre_versions[2] = versions[2];
1454                 pb->pb_pre_versions[3] = versions[3];
1455                 return;
1456         }
1457         default:
1458                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1459         }
1460 }
1461 EXPORT_SYMBOL(lustre_msg_set_versions);
1462
1463 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1464 {
1465         switch (msg->lm_magic) {
1466         case LUSTRE_MSG_MAGIC_V2: {
1467                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1468                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1469                 pb->pb_transno = transno;
1470                 return;
1471         }
1472         default:
1473                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1474         }
1475 }
1476 EXPORT_SYMBOL(lustre_msg_set_transno);
1477
1478 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1479 {
1480         switch (msg->lm_magic) {
1481         case LUSTRE_MSG_MAGIC_V2: {
1482                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1483                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1484                 pb->pb_status = status;
1485                 return;
1486         }
1487         default:
1488                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1489         }
1490 }
1491 EXPORT_SYMBOL(lustre_msg_set_status);
1492
1493 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1494 {
1495         switch (msg->lm_magic) {
1496         case LUSTRE_MSG_MAGIC_V2: {
1497                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1498                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1499                 pb->pb_conn_cnt = conn_cnt;
1500                 return;
1501         }
1502         default:
1503                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1504         }
1505 }
1506
1507 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1508 {
1509         switch (msg->lm_magic) {
1510         case LUSTRE_MSG_MAGIC_V1:
1511                 return;
1512         case LUSTRE_MSG_MAGIC_V2: {
1513                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1514                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1515                 pb->pb_timeout = timeout;
1516                 return;
1517         }
1518         default:
1519                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1520         }
1521 }
1522
1523 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1524 {
1525         switch (msg->lm_magic) {
1526         case LUSTRE_MSG_MAGIC_V1:
1527                 return;
1528         case LUSTRE_MSG_MAGIC_V2: {
1529                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1530                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1531                 pb->pb_service_time = service_time;
1532                 return;
1533         }
1534         default:
1535                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1536         }
1537 }
1538
1539 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1540 {
1541         switch (msg->lm_magic) {
1542         case LUSTRE_MSG_MAGIC_V1:
1543                 return;
1544         case LUSTRE_MSG_MAGIC_V2: {
1545                 __u32 opc = lustre_msg_get_opc(msg);
1546                 struct ptlrpc_body *pb;
1547
1548                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1549                  * See the comment in ptlrpc_request_pack(). */
1550                 if (!opc || opc == LDLM_BL_CALLBACK ||
1551                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1552                         return;
1553
1554                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1555                                        sizeof(struct ptlrpc_body));
1556                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1557
1558                 if (jobid != NULL)
1559                         memcpy(pb->pb_jobid, jobid, LUSTRE_JOBID_SIZE);
1560                 else if (pb->pb_jobid[0] == '\0')
1561                         lustre_get_jobid(pb->pb_jobid);
1562                 return;
1563         }
1564         default:
1565                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1566         }
1567 }
1568 EXPORT_SYMBOL(lustre_msg_set_jobid);
1569
1570 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1571 {
1572         switch (msg->lm_magic) {
1573         case LUSTRE_MSG_MAGIC_V1:
1574                 return;
1575         case LUSTRE_MSG_MAGIC_V2:
1576                 msg->lm_cksum = cksum;
1577                 return;
1578         default:
1579                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1580         }
1581 }
1582
1583
1584 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1585 {
1586         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1587
1588         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1589                                          req->rq_pill.rc_area[RCL_SERVER]);
1590         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1591                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1592 }
1593 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1594
1595 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1596 {
1597         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1598         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1599                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1600 }
1601
1602 /**
1603  * Send a remote set_info_async.
1604  *
1605  * This may go from client to server or server to client.
1606  */
1607 int do_set_info_async(struct obd_import *imp,
1608                       int opcode, int version,
1609                       size_t keylen, void *key,
1610                       size_t vallen, void *val,
1611                       struct ptlrpc_request_set *set)
1612 {
1613         struct ptlrpc_request *req;
1614         char                  *tmp;
1615         int                    rc;
1616         ENTRY;
1617
1618         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1619         if (req == NULL)
1620                 RETURN(-ENOMEM);
1621
1622         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1623                              RCL_CLIENT, keylen);
1624         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1625                              RCL_CLIENT, vallen);
1626         rc = ptlrpc_request_pack(req, version, opcode);
1627         if (rc) {
1628                 ptlrpc_request_free(req);
1629                 RETURN(rc);
1630         }
1631
1632         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1633         memcpy(tmp, key, keylen);
1634         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1635         memcpy(tmp, val, vallen);
1636
1637         ptlrpc_request_set_replen(req);
1638
1639         if (set) {
1640                 ptlrpc_set_add_req(set, req);
1641                 ptlrpc_check_set(NULL, set);
1642         } else {
1643                 rc = ptlrpc_queue_wait(req);
1644                 ptlrpc_req_finished(req);
1645         }
1646
1647         RETURN(rc);
1648 }
1649 EXPORT_SYMBOL(do_set_info_async);
1650
1651 /* byte flipping routines for all wire types declared in
1652  * lustre_idl.h implemented here.
1653  */
1654 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1655 {
1656         __swab32s (&b->pb_type);
1657         __swab32s (&b->pb_version);
1658         __swab32s (&b->pb_opc);
1659         __swab32s (&b->pb_status);
1660         __swab64s (&b->pb_last_xid);
1661         __swab16s (&b->pb_tag);
1662         __swab64s (&b->pb_last_committed);
1663         __swab64s (&b->pb_transno);
1664         __swab32s (&b->pb_flags);
1665         __swab32s (&b->pb_op_flags);
1666         __swab32s (&b->pb_conn_cnt);
1667         __swab32s (&b->pb_timeout);
1668         __swab32s (&b->pb_service_time);
1669         __swab32s (&b->pb_limit);
1670         __swab64s (&b->pb_slv);
1671         __swab64s (&b->pb_pre_versions[0]);
1672         __swab64s (&b->pb_pre_versions[1]);
1673         __swab64s (&b->pb_pre_versions[2]);
1674         __swab64s (&b->pb_pre_versions[3]);
1675         CLASSERT(offsetof(typeof(*b), pb_padding0) != 0);
1676         CLASSERT(offsetof(typeof(*b), pb_padding1) != 0);
1677         CLASSERT(offsetof(typeof(*b), pb_padding) != 0);
1678         /* While we need to maintain compatibility between
1679          * clients and servers without ptlrpc_body_v2 (< 2.3)
1680          * do not swab any fields beyond pb_jobid, as we are
1681          * using this swab function for both ptlrpc_body
1682          * and ptlrpc_body_v2. */
1683         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1684 }
1685
1686 void lustre_swab_connect(struct obd_connect_data *ocd)
1687 {
1688         __swab64s(&ocd->ocd_connect_flags);
1689         __swab32s(&ocd->ocd_version);
1690         __swab32s(&ocd->ocd_grant);
1691         __swab64s(&ocd->ocd_ibits_known);
1692         __swab32s(&ocd->ocd_index);
1693         __swab32s(&ocd->ocd_brw_size);
1694         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1695          * they are 8-byte values */
1696         __swab16s(&ocd->ocd_grant_extent);
1697         __swab32s(&ocd->ocd_unused);
1698         __swab64s(&ocd->ocd_transno);
1699         __swab32s(&ocd->ocd_group);
1700         __swab32s(&ocd->ocd_cksum_types);
1701         __swab32s(&ocd->ocd_instance);
1702         /* Fields after ocd_cksum_types are only accessible by the receiver
1703          * if the corresponding flag in ocd_connect_flags is set. Accessing
1704          * any field after ocd_maxbytes on the receiver without a valid flag
1705          * may result in out-of-bound memory access and kernel oops. */
1706         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1707                 __swab32s(&ocd->ocd_max_easize);
1708         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1709                 __swab64s(&ocd->ocd_maxbytes);
1710         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1711                 __swab16s(&ocd->ocd_maxmodrpcs);
1712         CLASSERT(offsetof(typeof(*ocd), padding0) != 0);
1713         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1714         CLASSERT(offsetof(typeof(*ocd), padding2) != 0);
1715         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1716         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1717         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1718         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1719         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1720         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1721         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1722         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1723         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1724         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1725         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1726         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1727         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1728 }
1729
1730 void lustre_swab_obdo (struct obdo  *o)
1731 {
1732         __swab64s (&o->o_valid);
1733         lustre_swab_ost_id(&o->o_oi);
1734         __swab64s (&o->o_parent_seq);
1735         __swab64s (&o->o_size);
1736         __swab64s (&o->o_mtime);
1737         __swab64s (&o->o_atime);
1738         __swab64s (&o->o_ctime);
1739         __swab64s (&o->o_blocks);
1740         __swab64s (&o->o_grant);
1741         __swab32s (&o->o_blksize);
1742         __swab32s (&o->o_mode);
1743         __swab32s (&o->o_uid);
1744         __swab32s (&o->o_gid);
1745         __swab32s (&o->o_flags);
1746         __swab32s (&o->o_nlink);
1747         __swab32s (&o->o_parent_oid);
1748         __swab32s (&o->o_misc);
1749         __swab64s (&o->o_ioepoch);
1750         __swab32s (&o->o_stripe_idx);
1751         __swab32s (&o->o_parent_ver);
1752         /* o_handle is opaque */
1753         /* o_lcookie is swabbed elsewhere */
1754         __swab32s (&o->o_uid_h);
1755         __swab32s (&o->o_gid_h);
1756         __swab64s (&o->o_data_version);
1757         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1758         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1759         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1760
1761 }
1762 EXPORT_SYMBOL(lustre_swab_obdo);
1763
1764 void lustre_swab_obd_statfs (struct obd_statfs *os)
1765 {
1766         __swab64s (&os->os_type);
1767         __swab64s (&os->os_blocks);
1768         __swab64s (&os->os_bfree);
1769         __swab64s (&os->os_bavail);
1770         __swab64s (&os->os_files);
1771         __swab64s (&os->os_ffree);
1772         /* no need to swab os_fsid */
1773         __swab32s (&os->os_bsize);
1774         __swab32s (&os->os_namelen);
1775         __swab64s (&os->os_maxbytes);
1776         __swab32s (&os->os_state);
1777         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1778         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1779         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1780         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1781         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1782         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1783         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1784         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1785         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1786 }
1787
1788 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1789 {
1790         lustre_swab_ost_id(&ioo->ioo_oid);
1791         __swab32s(&ioo->ioo_max_brw);
1792         __swab32s(&ioo->ioo_bufcnt);
1793 }
1794
1795 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1796 {
1797         __swab64s(&nbr->rnb_offset);
1798         __swab32s(&nbr->rnb_len);
1799         __swab32s(&nbr->rnb_flags);
1800 }
1801
1802 void lustre_swab_ost_body (struct ost_body *b)
1803 {
1804         lustre_swab_obdo (&b->oa);
1805 }
1806
1807 void lustre_swab_ost_last_id(u64 *id)
1808 {
1809         __swab64s(id);
1810 }
1811
1812 void lustre_swab_generic_32s(__u32 *val)
1813 {
1814         __swab32s(val);
1815 }
1816
1817 void lustre_swab_gl_desc(union ldlm_gl_desc *desc)
1818 {
1819         lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid);
1820         __swab64s(&desc->lquota_desc.gl_flags);
1821         __swab64s(&desc->lquota_desc.gl_ver);
1822         __swab64s(&desc->lquota_desc.gl_hardlimit);
1823         __swab64s(&desc->lquota_desc.gl_softlimit);
1824         __swab64s(&desc->lquota_desc.gl_time);
1825         CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0);
1826 }
1827
1828 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *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 }
1836 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1837
1838 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1839 {
1840         __swab64s(&lvb->lvb_size);
1841         __swab64s(&lvb->lvb_mtime);
1842         __swab64s(&lvb->lvb_atime);
1843         __swab64s(&lvb->lvb_ctime);
1844         __swab64s(&lvb->lvb_blocks);
1845         __swab32s(&lvb->lvb_mtime_ns);
1846         __swab32s(&lvb->lvb_atime_ns);
1847         __swab32s(&lvb->lvb_ctime_ns);
1848         __swab32s(&lvb->lvb_padding);
1849 }
1850 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1851
1852 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1853 {
1854         __swab64s(&lvb->lvb_flags);
1855         __swab64s(&lvb->lvb_id_may_rel);
1856         __swab64s(&lvb->lvb_id_rel);
1857         __swab64s(&lvb->lvb_id_qunit);
1858         __swab64s(&lvb->lvb_pad1);
1859 }
1860 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1861
1862 void lustre_swab_mdt_body (struct mdt_body *b)
1863 {
1864         lustre_swab_lu_fid(&b->mbo_fid1);
1865         lustre_swab_lu_fid(&b->mbo_fid2);
1866         /* handle is opaque */
1867         __swab64s(&b->mbo_valid);
1868         __swab64s(&b->mbo_size);
1869         __swab64s(&b->mbo_mtime);
1870         __swab64s(&b->mbo_atime);
1871         __swab64s(&b->mbo_ctime);
1872         __swab64s(&b->mbo_blocks);
1873         __swab64s(&b->mbo_ioepoch);
1874         __swab64s(&b->mbo_t_state);
1875         __swab32s(&b->mbo_fsuid);
1876         __swab32s(&b->mbo_fsgid);
1877         __swab32s(&b->mbo_capability);
1878         __swab32s(&b->mbo_mode);
1879         __swab32s(&b->mbo_uid);
1880         __swab32s(&b->mbo_gid);
1881         __swab32s(&b->mbo_flags);
1882         __swab32s(&b->mbo_rdev);
1883         __swab32s(&b->mbo_nlink);
1884         CLASSERT(offsetof(typeof(*b), mbo_unused2) != 0);
1885         __swab32s(&b->mbo_suppgid);
1886         __swab32s(&b->mbo_eadatasize);
1887         __swab32s(&b->mbo_aclsize);
1888         __swab32s(&b->mbo_max_mdsize);
1889         __swab32s(&b->mbo_max_cookiesize);
1890         __swab32s(&b->mbo_uid_h);
1891         __swab32s(&b->mbo_gid_h);
1892         CLASSERT(offsetof(typeof(*b), mbo_padding_5) != 0);
1893 }
1894
1895 void lustre_swab_mdt_ioepoch (struct mdt_ioepoch *b)
1896 {
1897         /* handle is opaque */
1898          __swab64s (&b->ioepoch);
1899          __swab32s (&b->flags);
1900          CLASSERT(offsetof(typeof(*b), padding) != 0);
1901 }
1902
1903 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1904 {
1905         int i;
1906         __swab32s(&mti->mti_lustre_ver);
1907         __swab32s(&mti->mti_stripe_index);
1908         __swab32s(&mti->mti_config_ver);
1909         __swab32s(&mti->mti_flags);
1910         __swab32s(&mti->mti_instance);
1911         __swab32s(&mti->mti_nid_count);
1912         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1913         for (i = 0; i < MTI_NIDS_MAX; i++)
1914                 __swab64s(&mti->mti_nids[i]);
1915 }
1916
1917 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1918 {
1919         __u8 i;
1920
1921         __swab64s(&entry->mne_version);
1922         __swab32s(&entry->mne_instance);
1923         __swab32s(&entry->mne_index);
1924         __swab32s(&entry->mne_length);
1925
1926         /* mne_nid_(count|type) must be one byte size because we're gonna
1927          * access it w/o swapping. */
1928         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1929         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1930
1931         /* remove this assertion if ipv6 is supported. */
1932         LASSERT(entry->mne_nid_type == 0);
1933         for (i = 0; i < entry->mne_nid_count; i++) {
1934                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1935                 __swab64s(&entry->u.nids[i]);
1936         }
1937 }
1938 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1939
1940 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1941 {
1942         __swab64s(&body->mcb_offset);
1943         __swab32s(&body->mcb_units);
1944         __swab16s(&body->mcb_type);
1945 }
1946
1947 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1948 {
1949         __swab64s(&body->mcr_offset);
1950         __swab64s(&body->mcr_size);
1951 }
1952
1953 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1954 {
1955         __swab64s (&i->dqi_bgrace);
1956         __swab64s (&i->dqi_igrace);
1957         __swab32s (&i->dqi_flags);
1958         __swab32s (&i->dqi_valid);
1959 }
1960
1961 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1962 {
1963         __swab64s (&b->dqb_ihardlimit);
1964         __swab64s (&b->dqb_isoftlimit);
1965         __swab64s (&b->dqb_curinodes);
1966         __swab64s (&b->dqb_bhardlimit);
1967         __swab64s (&b->dqb_bsoftlimit);
1968         __swab64s (&b->dqb_curspace);
1969         __swab64s (&b->dqb_btime);
1970         __swab64s (&b->dqb_itime);
1971         __swab32s (&b->dqb_valid);
1972         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1973 }
1974
1975 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1976 {
1977         __swab32s (&q->qc_cmd);
1978         __swab32s (&q->qc_type);
1979         __swab32s (&q->qc_id);
1980         __swab32s (&q->qc_stat);
1981         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1982         lustre_swab_obd_dqblk (&q->qc_dqblk);
1983 }
1984
1985 void lustre_swab_mdt_remote_perm (struct mdt_remote_perm *p)
1986 {
1987         __swab32s (&p->rp_uid);
1988         __swab32s (&p->rp_gid);
1989         __swab32s (&p->rp_fsuid);
1990         __swab32s (&p->rp_fsuid_h);
1991         __swab32s (&p->rp_fsgid);
1992         __swab32s (&p->rp_fsgid_h);
1993         __swab32s (&p->rp_access_perm);
1994         __swab32s (&p->rp_padding);
1995 };
1996 EXPORT_SYMBOL(lustre_swab_mdt_remote_perm);
1997
1998 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
1999 {
2000         lustre_swab_lu_fid(&gf->gf_fid);
2001         __swab64s(&gf->gf_recno);
2002         __swab32s(&gf->gf_linkno);
2003         __swab32s(&gf->gf_pathlen);
2004 }
2005 EXPORT_SYMBOL(lustre_swab_fid2path);
2006
2007 static void lustre_swab_fiemap_extent(struct ll_fiemap_extent *fm_extent)
2008 {
2009         __swab64s(&fm_extent->fe_logical);
2010         __swab64s(&fm_extent->fe_physical);
2011         __swab64s(&fm_extent->fe_length);
2012         __swab32s(&fm_extent->fe_flags);
2013         __swab32s(&fm_extent->fe_device);
2014 }
2015
2016 void lustre_swab_fiemap(struct ll_user_fiemap *fiemap)
2017 {
2018         __u32 i;
2019
2020         __swab64s(&fiemap->fm_start);
2021         __swab64s(&fiemap->fm_length);
2022         __swab32s(&fiemap->fm_flags);
2023         __swab32s(&fiemap->fm_mapped_extents);
2024         __swab32s(&fiemap->fm_extent_count);
2025         __swab32s(&fiemap->fm_reserved);
2026
2027         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2028                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2029 }
2030
2031 void lustre_swab_idx_info(struct idx_info *ii)
2032 {
2033         __swab32s(&ii->ii_magic);
2034         __swab32s(&ii->ii_flags);
2035         __swab16s(&ii->ii_count);
2036         __swab32s(&ii->ii_attrs);
2037         lustre_swab_lu_fid(&ii->ii_fid);
2038         __swab64s(&ii->ii_version);
2039         __swab64s(&ii->ii_hash_start);
2040         __swab64s(&ii->ii_hash_end);
2041         __swab16s(&ii->ii_keysize);
2042         __swab16s(&ii->ii_recsize);
2043 }
2044
2045 void lustre_swab_lip_header(struct lu_idxpage *lip)
2046 {
2047         /* swab header */
2048         __swab32s(&lip->lip_magic);
2049         __swab16s(&lip->lip_flags);
2050         __swab16s(&lip->lip_nr);
2051 }
2052 EXPORT_SYMBOL(lustre_swab_lip_header);
2053
2054 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2055 {
2056         __swab32s(&rr->rr_opcode);
2057         __swab32s(&rr->rr_cap);
2058         __swab32s(&rr->rr_fsuid);
2059         /* rr_fsuid_h is unused */
2060         __swab32s(&rr->rr_fsgid);
2061         /* rr_fsgid_h is unused */
2062         __swab32s(&rr->rr_suppgid1);
2063         /* rr_suppgid1_h is unused */
2064         __swab32s(&rr->rr_suppgid2);
2065         /* rr_suppgid2_h is unused */
2066         lustre_swab_lu_fid(&rr->rr_fid1);
2067         lustre_swab_lu_fid(&rr->rr_fid2);
2068         __swab64s(&rr->rr_mtime);
2069         __swab64s(&rr->rr_atime);
2070         __swab64s(&rr->rr_ctime);
2071         __swab64s(&rr->rr_size);
2072         __swab64s(&rr->rr_blocks);
2073         __swab32s(&rr->rr_bias);
2074         __swab32s(&rr->rr_mode);
2075         __swab32s(&rr->rr_flags);
2076         __swab32s(&rr->rr_flags_h);
2077         __swab32s(&rr->rr_umask);
2078
2079         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2080 };
2081
2082 void lustre_swab_lov_desc (struct lov_desc *ld)
2083 {
2084         __swab32s (&ld->ld_tgt_count);
2085         __swab32s (&ld->ld_active_tgt_count);
2086         __swab32s (&ld->ld_default_stripe_count);
2087         __swab32s (&ld->ld_pattern);
2088         __swab64s (&ld->ld_default_stripe_size);
2089         __swab64s (&ld->ld_default_stripe_offset);
2090         __swab32s (&ld->ld_qos_maxage);
2091         /* uuid endian insensitive */
2092 }
2093 EXPORT_SYMBOL(lustre_swab_lov_desc);
2094
2095 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2096 {
2097         __swab32s (&ld->ld_tgt_count);
2098         __swab32s (&ld->ld_active_tgt_count);
2099         __swab32s (&ld->ld_default_stripe_count);
2100         __swab32s (&ld->ld_pattern);
2101         __swab64s (&ld->ld_default_hash_size);
2102         __swab32s (&ld->ld_qos_maxage);
2103         /* uuid endian insensitive */
2104 }
2105
2106 /* This structure is always in little-endian */
2107 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2108 {
2109         int i;
2110
2111         __swab32s(&lmm1->lmv_magic);
2112         __swab32s(&lmm1->lmv_stripe_count);
2113         __swab32s(&lmm1->lmv_master_mdt_index);
2114         __swab32s(&lmm1->lmv_hash_type);
2115         __swab32s(&lmm1->lmv_layout_version);
2116         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2117                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2118 }
2119
2120 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2121 {
2122         switch (lmm->lmv_magic) {
2123         case LMV_MAGIC_V1:
2124                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2125                 break;
2126         default:
2127                 break;
2128         }
2129 }
2130
2131 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2132 {
2133         __swab32s(&lum->lum_magic);
2134         __swab32s(&lum->lum_stripe_count);
2135         __swab32s(&lum->lum_stripe_offset);
2136         __swab32s(&lum->lum_hash_type);
2137         __swab32s(&lum->lum_type);
2138         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2139 }
2140 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2141
2142 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2143                           const char *msg)
2144 {
2145         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2146                 return;
2147
2148         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2149         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2150         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2151         CDEBUG(lvl, "\tlmm_object_id: "LPU64"\n", lmm_oi_id(&lum->lmm_oi));
2152         CDEBUG(lvl, "\tlmm_object_gr: "LPU64"\n", lmm_oi_seq(&lum->lmm_oi));
2153         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2154         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2155         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2156                lum->lmm_stripe_offset);
2157         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2158                 struct lov_user_md_v3 *v3 = (void *)lum;
2159                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2160         }
2161         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2162                 struct lov_user_md_v3 *v3 = (void *)lum;
2163                 int i;
2164
2165                 if (v3->lmm_pool_name[0] != '\0')
2166                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2167
2168                 CDEBUG(lvl, "\ttarget list:\n");
2169                 for (i = 0; i < v3->lmm_stripe_count; i++)
2170                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2171         }
2172 }
2173 EXPORT_SYMBOL(lustre_print_user_md);
2174
2175 static void lustre_swab_lmm_oi(struct ost_id *oi)
2176 {
2177         __swab64s(&oi->oi.oi_id);
2178         __swab64s(&oi->oi.oi_seq);
2179 }
2180
2181 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2182 {
2183         ENTRY;
2184         __swab32s(&lum->lmm_magic);
2185         __swab32s(&lum->lmm_pattern);
2186         lustre_swab_lmm_oi(&lum->lmm_oi);
2187         __swab32s(&lum->lmm_stripe_size);
2188         __swab16s(&lum->lmm_stripe_count);
2189         __swab16s(&lum->lmm_stripe_offset);
2190         EXIT;
2191 }
2192
2193 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2194 {
2195         ENTRY;
2196         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2197         lustre_swab_lov_user_md_common(lum);
2198         EXIT;
2199 }
2200 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2201
2202 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2203 {
2204         ENTRY;
2205         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2206         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2207         /* lmm_pool_name nothing to do with char */
2208         EXIT;
2209 }
2210 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2211
2212 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2213 {
2214         ENTRY;
2215         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2216         __swab32s(&lmm->lmm_magic);
2217         __swab32s(&lmm->lmm_pattern);
2218         lustre_swab_lmm_oi(&lmm->lmm_oi);
2219         __swab32s(&lmm->lmm_stripe_size);
2220         __swab16s(&lmm->lmm_stripe_count);
2221         __swab16s(&lmm->lmm_layout_gen);
2222         EXIT;
2223 }
2224 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2225
2226 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2227                                      int stripe_count)
2228 {
2229         int i;
2230         ENTRY;
2231         for (i = 0; i < stripe_count; i++) {
2232                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2233                 __swab32s(&(lod[i].l_ost_gen));
2234                 __swab32s(&(lod[i].l_ost_idx));
2235         }
2236         EXIT;
2237 }
2238 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2239
2240 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2241 {
2242         int  i;
2243
2244         for (i = 0; i < RES_NAME_SIZE; i++)
2245                 __swab64s (&id->name[i]);
2246 }
2247
2248 void lustre_swab_ldlm_policy_data (ldlm_wire_policy_data_t *d)
2249 {
2250         /* the lock data is a union and the first two fields are always an
2251          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2252          * data the same way. */
2253         __swab64s(&d->l_extent.start);
2254         __swab64s(&d->l_extent.end);
2255         __swab64s(&d->l_extent.gid);
2256         __swab64s(&d->l_flock.lfw_owner);
2257         __swab32s(&d->l_flock.lfw_pid);
2258 }
2259
2260 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2261 {
2262         __swab64s (&i->opc);
2263 }
2264
2265 void lustre_swab_ldlm_resource_desc (struct ldlm_resource_desc *r)
2266 {
2267         __swab32s (&r->lr_type);
2268         CLASSERT(offsetof(typeof(*r), lr_padding) != 0);
2269         lustre_swab_ldlm_res_id (&r->lr_name);
2270 }
2271
2272 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2273 {
2274         lustre_swab_ldlm_resource_desc (&l->l_resource);
2275         __swab32s (&l->l_req_mode);
2276         __swab32s (&l->l_granted_mode);
2277         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2278 }
2279
2280 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2281 {
2282         __swab32s (&rq->lock_flags);
2283         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2284         __swab32s (&rq->lock_count);
2285         /* lock_handle[] opaque */
2286 }
2287
2288 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2289 {
2290         __swab32s (&r->lock_flags);
2291         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2292         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2293         /* lock_handle opaque */
2294         __swab64s (&r->lock_policy_res1);
2295         __swab64s (&r->lock_policy_res2);
2296 }
2297
2298 void lustre_swab_quota_body(struct quota_body *b)
2299 {
2300         lustre_swab_lu_fid(&b->qb_fid);
2301         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2302         __swab32s(&b->qb_flags);
2303         __swab64s(&b->qb_count);
2304         __swab64s(&b->qb_usage);
2305         __swab64s(&b->qb_slv_ver);
2306 }
2307
2308 /* Dump functions */
2309 void dump_ioo(struct obd_ioobj *ioo)
2310 {
2311         CDEBUG(D_RPCTRACE,
2312                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2313                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2314                ioo->ioo_bufcnt);
2315 }
2316
2317 void dump_rniobuf(struct niobuf_remote *nb)
2318 {
2319         CDEBUG(D_RPCTRACE, "niobuf_remote: offset="LPU64", len=%d, flags=%x\n",
2320                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2321 }
2322
2323 void dump_obdo(struct obdo *oa)
2324 {
2325         u64 valid = oa->o_valid;
2326
2327         CDEBUG(D_RPCTRACE, "obdo: o_valid = "LPX64"\n", valid);
2328         if (valid & OBD_MD_FLID)
2329                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2330         if (valid & OBD_MD_FLFID)
2331                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = "LPX64"\n",
2332                        oa->o_parent_seq);
2333         if (valid & OBD_MD_FLSIZE)
2334                 CDEBUG(D_RPCTRACE, "obdo: o_size = "LPD64"\n", oa->o_size);
2335         if (valid & OBD_MD_FLMTIME)
2336                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = "LPD64"\n", oa->o_mtime);
2337         if (valid & OBD_MD_FLATIME)
2338                 CDEBUG(D_RPCTRACE, "obdo: o_atime = "LPD64"\n", oa->o_atime);
2339         if (valid & OBD_MD_FLCTIME)
2340                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = "LPD64"\n", oa->o_ctime);
2341         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2342                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = "LPD64"\n", oa->o_blocks);
2343         if (valid & OBD_MD_FLGRANT)
2344                 CDEBUG(D_RPCTRACE, "obdo: o_grant = "LPD64"\n", oa->o_grant);
2345         if (valid & OBD_MD_FLBLKSZ)
2346                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2347         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2348                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2349                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2350                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2351         if (valid & OBD_MD_FLUID)
2352                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2353         if (valid & OBD_MD_FLUID)
2354                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2355         if (valid & OBD_MD_FLGID)
2356                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2357         if (valid & OBD_MD_FLGID)
2358                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2359         if (valid & OBD_MD_FLFLAGS)
2360                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2361         if (valid & OBD_MD_FLNLINK)
2362                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2363         else if (valid & OBD_MD_FLCKSUM)
2364                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2365                        oa->o_nlink);
2366         if (valid & OBD_MD_FLGENER)
2367                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2368                        oa->o_parent_oid);
2369         if (valid & OBD_MD_FLEPOCH)
2370                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = "LPD64"\n",
2371                        oa->o_ioepoch);
2372         if (valid & OBD_MD_FLFID) {
2373                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2374                        oa->o_stripe_idx);
2375                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2376                        oa->o_parent_ver);
2377         }
2378         if (valid & OBD_MD_FLHANDLE)
2379                 CDEBUG(D_RPCTRACE, "obdo: o_handle = "LPD64"\n",
2380                        oa->o_handle.cookie);
2381         if (valid & OBD_MD_FLCOOKIE)
2382                 CDEBUG(D_RPCTRACE, "obdo: o_lcookie = "
2383                        "(llog_cookie dumping not yet implemented)\n");
2384 }
2385
2386 void dump_ost_body(struct ost_body *ob)
2387 {
2388         dump_obdo(&ob->oa);
2389 }
2390
2391 void dump_rcs(__u32 *rc)
2392 {
2393         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2394 }
2395
2396 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2397 {
2398         LASSERT(req->rq_reqmsg);
2399
2400         switch (req->rq_reqmsg->lm_magic) {
2401         case LUSTRE_MSG_MAGIC_V2:
2402                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2403         default:
2404                 CERROR("bad lustre msg magic: %#08X\n",
2405                        req->rq_reqmsg->lm_magic);
2406         }
2407         return 0;
2408 }
2409
2410 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2411 {
2412         LASSERT(req->rq_repmsg);
2413
2414         switch (req->rq_repmsg->lm_magic) {
2415         case LUSTRE_MSG_MAGIC_V2:
2416                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2417         default:
2418                 /* uninitialized yet */
2419                 return 0;
2420         }
2421 }
2422
2423 void _debug_req(struct ptlrpc_request *req,
2424                 struct libcfs_debug_msg_data *msgdata,
2425                 const char *fmt, ... )
2426 {
2427         int req_ok = req->rq_reqmsg != NULL;
2428         int rep_ok = req->rq_repmsg != NULL;
2429         lnet_nid_t nid = LNET_NID_ANY;
2430         va_list args;
2431
2432         if (ptlrpc_req_need_swab(req)) {
2433                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2434                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2435         }
2436
2437         if (req->rq_import && req->rq_import->imp_connection)
2438                 nid = req->rq_import->imp_connection->c_peer.nid;
2439         else if (req->rq_export && req->rq_export->exp_connection)
2440                 nid = req->rq_export->exp_connection->c_peer.nid;
2441
2442         va_start(args, fmt);
2443         libcfs_debug_vmsg2(msgdata, fmt, args,
2444                            " req@%p x"LPU64"/t"LPD64"("LPD64") o%d->%s@%s:%d/%d"
2445                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2446                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2447                            req, req->rq_xid, req->rq_transno,
2448                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2449                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2450                            req->rq_import ?
2451                                 req->rq_import->imp_obd->obd_name :
2452                                 req->rq_export ?
2453                                         req->rq_export->exp_client_uuid.uuid :
2454                                         "<?>",
2455                            libcfs_nid2str(nid),
2456                            req->rq_request_portal, req->rq_reply_portal,
2457                            req->rq_reqlen, req->rq_replen,
2458                            req->rq_early_count, req->rq_timedout,
2459                            req->rq_deadline,
2460                            atomic_read(&req->rq_refcount),
2461                            DEBUG_REQ_FLAGS(req),
2462                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2463                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2464                            req->rq_status,
2465                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2466         va_end(args);
2467 }
2468 EXPORT_SYMBOL(_debug_req);
2469
2470 void lustre_swab_lustre_capa(struct lustre_capa *c)
2471 {
2472         lustre_swab_lu_fid(&c->lc_fid);
2473         __swab64s (&c->lc_opc);
2474         __swab64s (&c->lc_uid);
2475         __swab64s (&c->lc_gid);
2476         __swab32s (&c->lc_flags);
2477         __swab32s (&c->lc_keyid);
2478         __swab32s (&c->lc_timeout);
2479         __swab32s (&c->lc_expiry);
2480 }
2481
2482 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2483 {
2484         __swab64s (&k->lk_seq);
2485         __swab32s (&k->lk_keyid);
2486         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2487 }
2488
2489 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2490 {
2491         __swab32s(&state->hus_states);
2492         __swab32s(&state->hus_archive_id);
2493 }
2494
2495 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2496 {
2497         __swab32s(&hss->hss_valid);
2498         __swab64s(&hss->hss_setmask);
2499         __swab64s(&hss->hss_clearmask);
2500         __swab32s(&hss->hss_archive_id);
2501 }
2502
2503 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2504 {
2505         __swab64s(&extent->offset);
2506         __swab64s(&extent->length);
2507 }
2508
2509 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2510 {
2511         __swab32s(&action->hca_state);
2512         __swab32s(&action->hca_action);
2513         lustre_swab_hsm_extent(&action->hca_location);
2514 }
2515
2516 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2517 {
2518         lustre_swab_lu_fid(&hui->hui_fid);
2519         lustre_swab_hsm_extent(&hui->hui_extent);
2520 }
2521
2522 void lustre_swab_layout_intent(struct layout_intent *li)
2523 {
2524         __swab32s(&li->li_opc);
2525         __swab32s(&li->li_flags);
2526         __swab64s(&li->li_start);
2527         __swab64s(&li->li_end);
2528 }
2529
2530 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2531 {
2532         lustre_swab_lu_fid(&hpk->hpk_fid);
2533         __swab64s(&hpk->hpk_cookie);
2534         __swab64s(&hpk->hpk_extent.offset);
2535         __swab64s(&hpk->hpk_extent.length);
2536         __swab16s(&hpk->hpk_flags);
2537         __swab16s(&hpk->hpk_errval);
2538 }
2539
2540 void lustre_swab_hsm_request(struct hsm_request *hr)
2541 {
2542         __swab32s(&hr->hr_action);
2543         __swab32s(&hr->hr_archive_id);
2544         __swab64s(&hr->hr_flags);
2545         __swab32s(&hr->hr_itemcount);
2546         __swab32s(&hr->hr_data_len);
2547 }
2548
2549 void lustre_swab_object_update(struct object_update *ou)
2550 {
2551         struct object_update_param *param;
2552         size_t  i;
2553
2554         __swab16s(&ou->ou_type);
2555         __swab16s(&ou->ou_params_count);
2556         __swab32s(&ou->ou_master_index);
2557         __swab32s(&ou->ou_flags);
2558         __swab32s(&ou->ou_padding1);
2559         __swab64s(&ou->ou_batchid);
2560         lustre_swab_lu_fid(&ou->ou_fid);
2561         param = &ou->ou_params[0];
2562         for (i = 0; i < ou->ou_params_count; i++) {
2563                 __swab16s(&param->oup_len);
2564                 __swab16s(&param->oup_padding);
2565                 __swab32s(&param->oup_padding2);
2566                 param = (struct object_update_param *)((char *)param +
2567                          object_update_param_size(param));
2568         }
2569 }
2570
2571 void lustre_swab_object_update_request(struct object_update_request *our)
2572 {
2573         size_t i;
2574         __swab32s(&our->ourq_magic);
2575         __swab16s(&our->ourq_count);
2576         __swab16s(&our->ourq_padding);
2577         for (i = 0; i < our->ourq_count; i++) {
2578                 struct object_update *ou;
2579
2580                 ou = object_update_request_get(our, i, NULL);
2581                 if (ou == NULL)
2582                         return;
2583                 lustre_swab_object_update(ou);
2584         }
2585 }
2586
2587 void lustre_swab_object_update_result(struct object_update_result *our)
2588 {
2589         __swab32s(&our->our_rc);
2590         __swab16s(&our->our_datalen);
2591         __swab16s(&our->our_padding);
2592 }
2593
2594 void lustre_swab_object_update_reply(struct object_update_reply *our)
2595 {
2596         size_t i;
2597
2598         __swab32s(&our->ourp_magic);
2599         __swab16s(&our->ourp_count);
2600         __swab16s(&our->ourp_padding);
2601         for (i = 0; i < our->ourp_count; i++) {
2602                 struct object_update_result *ourp;
2603
2604                 __swab16s(&our->ourp_lens[i]);
2605                 ourp = object_update_result_get(our, i, NULL);
2606                 if (ourp == NULL)
2607                         return;
2608                 lustre_swab_object_update_result(ourp);
2609         }
2610 }
2611
2612 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2613 {
2614         __swab64s(&msl->msl_flags);
2615 }
2616
2617 void lustre_swab_close_data(struct close_data *cd)
2618 {
2619         lustre_swab_lu_fid(&cd->cd_fid);
2620         __swab64s(&cd->cd_data_version);
2621 }
2622
2623 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2624 {
2625         __swab32s(&lr->lr_event);
2626         __swab32s(&lr->lr_index);
2627         __swab32s(&lr->lr_flags);
2628         __swab32s(&lr->lr_valid);
2629         __swab32s(&lr->lr_speed);
2630         __swab16s(&lr->lr_version);
2631         __swab16s(&lr->lr_active);
2632         __swab16s(&lr->lr_param);
2633         __swab16s(&lr->lr_async_windows);
2634         __swab32s(&lr->lr_flags);
2635         lustre_swab_lu_fid(&lr->lr_fid);
2636         lustre_swab_lu_fid(&lr->lr_fid2);
2637         lustre_swab_lu_fid(&lr->lr_fid3);
2638         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2639         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2640 }
2641
2642 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2643 {
2644         __swab32s(&lr->lr_status);
2645         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2646         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2647 }
2648
2649 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2650 {
2651         lustre_swab_lu_fid(&ent->loe_key);
2652         lustre_swab_lu_fid(&ent->loe_rec.lor_fid);
2653         __swab32s(&ent->loe_rec.lor_uid);
2654         __swab32s(&ent->loe_rec.lor_gid);
2655 }
2656 EXPORT_SYMBOL(lustre_swab_orphan_ent);