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[fs/lustre-release.git] / lustre / ptlrpc / pack_generic.c
1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 only,
8  * as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License version 2 for more details (a copy is included
14  * in the LICENSE file that accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License
17  * version 2 along with this program; If not, see
18  * http://www.gnu.org/licenses/gpl-2.0.html
19  *
20  * GPL HEADER END
21  */
22 /*
23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24  * Use is subject to license terms.
25  *
26  * Copyright (c) 2011, 2017, Intel Corporation.
27  */
28 /*
29  * This file is part of Lustre, http://www.lustre.org/
30  * Lustre is a trademark of Sun Microsystems, Inc.
31  *
32  * lustre/ptlrpc/pack_generic.c
33  *
34  * (Un)packing of OST requests
35  *
36  * Author: Peter J. Braam <braam@clusterfs.com>
37  * Author: Phil Schwan <phil@clusterfs.com>
38  * Author: Eric Barton <eeb@clusterfs.com>
39  */
40
41 #define DEBUG_SUBSYSTEM S_RPC
42
43 #include <libcfs/libcfs.h>
44
45 #include <llog_swab.h>
46 #include <lustre_net.h>
47 #include <lustre_swab.h>
48 #include <obd_cksum.h>
49 #include <obd_class.h>
50 #include <obd_support.h>
51 #include <obj_update.h>
52
53 #include "ptlrpc_internal.h"
54
55 static inline __u32 lustre_msg_hdr_size_v2(__u32 count)
56 {
57         return cfs_size_round(offsetof(struct lustre_msg_v2,
58                                        lm_buflens[count]));
59 }
60
61 __u32 lustre_msg_hdr_size(__u32 magic, __u32 count)
62 {
63         switch (magic) {
64         case LUSTRE_MSG_MAGIC_V2:
65                 return lustre_msg_hdr_size_v2(count);
66         default:
67                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
68                 return 0;
69         }
70 }
71
72 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
73                             __u32 index)
74 {
75         if (inout)
76                 lustre_set_req_swabbed(req, index);
77         else
78                 lustre_set_rep_swabbed(req, index);
79 }
80
81 bool ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
82                           __u32 index)
83 {
84         if (inout)
85                 return (ptlrpc_req_need_swab(req) &&
86                         !lustre_req_swabbed(req, index));
87
88         return (ptlrpc_rep_need_swab(req) && !lustre_rep_swabbed(req, index));
89 }
90
91 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
92                                               enum lustre_msg_version version)
93 {
94         enum lustre_msg_version ver = lustre_msg_get_version(msg);
95
96         return (ver & LUSTRE_VERSION_MASK) != version;
97 }
98
99 int lustre_msg_check_version(struct lustre_msg *msg,
100                              enum lustre_msg_version version)
101 {
102 #define LUSTRE_MSG_MAGIC_V1 0x0BD00BD0
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 -EPROTO;
112         }
113 #undef LUSTRE_MSG_MAGIC_V1
114 }
115
116 /* early reply size */
117 __u32 lustre_msg_early_size()
118 {
119         static __u32 size;
120         if (!size) {
121                 /* Always reply old ptlrpc_body_v2 to keep interoprability
122                  * with the old client (< 2.3) which doesn't have pb_jobid
123                  * in the ptlrpc_body.
124                  *
125                  * XXX Remove this whenever we dorp interoprability with such
126                  *     client.
127                  */
128                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
129                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
130         }
131         return size;
132 }
133 EXPORT_SYMBOL(lustre_msg_early_size);
134
135 __u32 lustre_msg_size_v2(int count, __u32 *lengths)
136 {
137         __u32 size;
138         int i;
139
140         size = lustre_msg_hdr_size_v2(count);
141         for (i = 0; i < count; i++)
142                 size += cfs_size_round(lengths[i]);
143
144         return size;
145 }
146 EXPORT_SYMBOL(lustre_msg_size_v2);
147
148 /* This returns the size of the buffer that is required to hold a lustre_msg
149  * with the given sub-buffer lengths.
150  * NOTE: this should only be used for NEW requests, and should always be
151  *       in the form of a v2 request.  If this is a connection to a v1
152  *       target then the first buffer will be stripped because the ptlrpc
153  *       data is part of the lustre_msg_v1 header. b=14043 */
154 __u32 lustre_msg_size(__u32 magic, int count, __u32 *lens)
155 {
156         __u32 size[] = { sizeof(struct ptlrpc_body) };
157
158         if (!lens) {
159                 LASSERT(count == 1);
160                 lens = size;
161         }
162
163         LASSERT(count > 0);
164         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
165
166         switch (magic) {
167         case LUSTRE_MSG_MAGIC_V2:
168                 return lustre_msg_size_v2(count, lens);
169         default:
170                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
171                 return 0;
172         }
173 }
174
175 /* This is used to determine the size of a buffer that was already packed
176  * and will correctly handle the different message formats. */
177 __u32 lustre_packed_msg_size(struct lustre_msg *msg)
178 {
179         switch (msg->lm_magic) {
180         case LUSTRE_MSG_MAGIC_V2:
181                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
182         default:
183                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
184                 return 0;
185         }
186 }
187 EXPORT_SYMBOL(lustre_packed_msg_size);
188
189 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
190                         char **bufs)
191 {
192         char *ptr;
193         int i;
194
195         msg->lm_bufcount = count;
196         /* XXX: lm_secflvr uninitialized here */
197         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
198
199         for (i = 0; i < count; i++)
200                 msg->lm_buflens[i] = lens[i];
201
202         if (bufs == NULL)
203                 return;
204
205         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
206         for (i = 0; i < count; i++) {
207                 char *tmp = bufs[i];
208
209                 if (tmp)
210                         memcpy(ptr, tmp, lens[i]);
211                 ptr += cfs_size_round(lens[i]);
212         }
213 }
214 EXPORT_SYMBOL(lustre_init_msg_v2);
215
216 static int lustre_pack_request_v2(struct ptlrpc_request *req,
217                                   int count, __u32 *lens, char **bufs)
218 {
219         int reqlen, rc;
220
221         reqlen = lustre_msg_size_v2(count, lens);
222
223         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
224         if (rc)
225                 return rc;
226
227         req->rq_reqlen = reqlen;
228
229         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
230         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
231         return 0;
232 }
233
234 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
235                         __u32 *lens, char **bufs)
236 {
237         __u32 size[] = { sizeof(struct ptlrpc_body) };
238
239         if (!lens) {
240                 LASSERT(count == 1);
241                 lens = size;
242         }
243
244         LASSERT(count > 0);
245         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
246
247         /* only use new format, we don't need to be compatible with 1.4 */
248         magic = LUSTRE_MSG_MAGIC_V2;
249
250         switch (magic) {
251         case LUSTRE_MSG_MAGIC_V2:
252                 return lustre_pack_request_v2(req, count, lens, bufs);
253         default:
254                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
255                 return -EINVAL;
256         }
257 }
258
259 #if RS_DEBUG
260 struct list_head ptlrpc_rs_debug_lru =
261         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
262 spinlock_t ptlrpc_rs_debug_lock;
263
264 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
265 do {                                                                    \
266         spin_lock(&ptlrpc_rs_debug_lock);                               \
267         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
268         spin_unlock(&ptlrpc_rs_debug_lock);                             \
269 } while (0)
270
271 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
272 do {                                                                    \
273         spin_lock(&ptlrpc_rs_debug_lock);                               \
274         list_del(&(rs)->rs_debug_list);                         \
275         spin_unlock(&ptlrpc_rs_debug_lock);                             \
276 } while (0)
277 #else
278 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
279 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
280 #endif
281
282 struct ptlrpc_reply_state *
283 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
284 {
285         struct ptlrpc_reply_state *rs = NULL;
286
287         spin_lock(&svcpt->scp_rep_lock);
288
289         /* See if we have anything in a pool, and wait if nothing */
290         while (list_empty(&svcpt->scp_rep_idle)) {
291                 struct l_wait_info      lwi;
292                 int                     rc;
293
294                 spin_unlock(&svcpt->scp_rep_lock);
295                 /* If we cannot get anything for some long time, we better
296                  * bail out instead of waiting infinitely */
297                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
298                 rc = l_wait_event(svcpt->scp_rep_waitq,
299                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
300                 if (rc != 0)
301                         goto out;
302                 spin_lock(&svcpt->scp_rep_lock);
303         }
304
305         rs = list_entry(svcpt->scp_rep_idle.next,
306                             struct ptlrpc_reply_state, rs_list);
307         list_del(&rs->rs_list);
308
309         spin_unlock(&svcpt->scp_rep_lock);
310
311         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
312         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
313         rs->rs_svcpt = svcpt;
314         rs->rs_prealloc = 1;
315 out:
316         return rs;
317 }
318
319 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
320 {
321         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
322
323         spin_lock(&svcpt->scp_rep_lock);
324         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
325         spin_unlock(&svcpt->scp_rep_lock);
326         wake_up(&svcpt->scp_rep_waitq);
327 }
328
329 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
330                          __u32 *lens, char **bufs, int flags)
331 {
332         struct ptlrpc_reply_state *rs;
333         int                        msg_len, rc;
334         ENTRY;
335
336         LASSERT(req->rq_reply_state == NULL);
337
338         if ((flags & LPRFL_EARLY_REPLY) == 0) {
339                 spin_lock(&req->rq_lock);
340                 req->rq_packed_final = 1;
341                 spin_unlock(&req->rq_lock);
342         }
343
344         msg_len = lustre_msg_size_v2(count, lens);
345         rc = sptlrpc_svc_alloc_rs(req, msg_len);
346         if (rc)
347                 RETURN(rc);
348
349         rs = req->rq_reply_state;
350         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
351         rs->rs_cb_id.cbid_fn = reply_out_callback;
352         rs->rs_cb_id.cbid_arg = rs;
353         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
354         INIT_LIST_HEAD(&rs->rs_exp_list);
355         INIT_LIST_HEAD(&rs->rs_obd_list);
356         INIT_LIST_HEAD(&rs->rs_list);
357         spin_lock_init(&rs->rs_lock);
358
359         req->rq_replen = msg_len;
360         req->rq_reply_state = rs;
361         req->rq_repmsg = rs->rs_msg;
362
363         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
364         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
365
366         PTLRPC_RS_DEBUG_LRU_ADD(rs);
367
368         RETURN(0);
369 }
370 EXPORT_SYMBOL(lustre_pack_reply_v2);
371
372 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
373                             char **bufs, int flags)
374 {
375         int rc = 0;
376         __u32 size[] = { sizeof(struct ptlrpc_body) };
377
378         if (!lens) {
379                 LASSERT(count == 1);
380                 lens = size;
381         }
382
383         LASSERT(count > 0);
384         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
385
386         switch (req->rq_reqmsg->lm_magic) {
387         case LUSTRE_MSG_MAGIC_V2:
388                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
389                 break;
390         default:
391                 LASSERTF(0, "incorrect message magic: %08x\n",
392                          req->rq_reqmsg->lm_magic);
393                 rc = -EINVAL;
394         }
395         if (rc != 0)
396                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
397                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
398         return rc;
399 }
400
401 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
402                       char **bufs)
403 {
404         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
405 }
406 EXPORT_SYMBOL(lustre_pack_reply);
407
408 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, __u32 n, __u32 min_size)
409 {
410         __u32 i, offset, buflen, bufcount;
411
412         LASSERT(m != NULL);
413
414         bufcount = m->lm_bufcount;
415         if (unlikely(n >= bufcount)) {
416                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
417                        m, n, bufcount);
418                 return NULL;
419         }
420
421         buflen = m->lm_buflens[n];
422         if (unlikely(buflen < min_size)) {
423                 CERROR("msg %p buffer[%d] size %d too small "
424                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
425                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
426                 return NULL;
427         }
428
429         offset = lustre_msg_hdr_size_v2(bufcount);
430         for (i = 0; i < n; i++)
431                 offset += cfs_size_round(m->lm_buflens[i]);
432
433         return (char *)m + offset;
434 }
435
436 void *lustre_msg_buf(struct lustre_msg *m, __u32 n, __u32 min_size)
437 {
438         switch (m->lm_magic) {
439         case LUSTRE_MSG_MAGIC_V2:
440                 return lustre_msg_buf_v2(m, n, min_size);
441         default:
442                 LASSERTF(0, "incorrect message magic: %08x (msg:%p)\n",
443                          m->lm_magic, m);
444                 return NULL;
445         }
446 }
447 EXPORT_SYMBOL(lustre_msg_buf);
448
449 static int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, __u32 segment,
450                                 unsigned int newlen, int move_data)
451 {
452         char   *tail = NULL, *newpos;
453         int     tail_len = 0, n;
454
455         LASSERT(msg);
456         LASSERT(msg->lm_bufcount > segment);
457         LASSERT(msg->lm_buflens[segment] >= newlen);
458
459         if (msg->lm_buflens[segment] == newlen)
460                 goto out;
461
462         if (move_data && msg->lm_bufcount > segment + 1) {
463                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
464                 for (n = segment + 1; n < msg->lm_bufcount; n++)
465                         tail_len += cfs_size_round(msg->lm_buflens[n]);
466         }
467
468         msg->lm_buflens[segment] = newlen;
469
470         if (tail && tail_len) {
471                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
472                 LASSERT(newpos <= tail);
473                 if (newpos != tail)
474                         memmove(newpos, tail, tail_len);
475         }
476 out:
477         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
478 }
479
480 /*
481  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
482  * we also move data forward from @segment + 1.
483  *
484  * if @newlen == 0, we remove the segment completely, but we still keep the
485  * totally bufcount the same to save possible data moving. this will leave a
486  * unused segment with size 0 at the tail, but that's ok.
487  *
488  * return new msg size after shrinking.
489  *
490  * CAUTION:
491  * + if any buffers higher than @segment has been filled in, must call shrink
492  *   with non-zero @move_data.
493  * + caller should NOT keep pointers to msg buffers which higher than @segment
494  *   after call shrink.
495  */
496 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
497                       unsigned int newlen, int move_data)
498 {
499         switch (msg->lm_magic) {
500         case LUSTRE_MSG_MAGIC_V2:
501                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
502         default:
503                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
504         }
505 }
506 EXPORT_SYMBOL(lustre_shrink_msg);
507
508 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
509 {
510         PTLRPC_RS_DEBUG_LRU_DEL(rs);
511
512         LASSERT(atomic_read(&rs->rs_refcount) == 0);
513         LASSERT(!rs->rs_difficult || rs->rs_handled);
514         LASSERT(!rs->rs_on_net);
515         LASSERT(!rs->rs_scheduled);
516         LASSERT(rs->rs_export == NULL);
517         LASSERT(rs->rs_nlocks == 0);
518         LASSERT(list_empty(&rs->rs_exp_list));
519         LASSERT(list_empty(&rs->rs_obd_list));
520
521         sptlrpc_svc_free_rs(rs);
522 }
523
524 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
525 {
526         int swabbed, required_len, i;
527
528         /* Now we know the sender speaks my language. */
529         required_len = lustre_msg_hdr_size_v2(0);
530         if (len < required_len) {
531                 /* can't even look inside the message */
532                 CERROR("message length %d too small for lustre_msg\n", len);
533                 return -EINVAL;
534         }
535
536         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
537
538         if (swabbed) {
539                 __swab32s(&m->lm_magic);
540                 __swab32s(&m->lm_bufcount);
541                 __swab32s(&m->lm_secflvr);
542                 __swab32s(&m->lm_repsize);
543                 __swab32s(&m->lm_cksum);
544                 __swab32s(&m->lm_flags);
545                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
546                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
547         }
548
549         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
550         if (len < required_len) {
551                 /* didn't receive all the buffer lengths */
552                 CERROR ("message length %d too small for %d buflens\n",
553                         len, m->lm_bufcount);
554                 return -EINVAL;
555         }
556
557         for (i = 0; i < m->lm_bufcount; i++) {
558                 if (swabbed)
559                         __swab32s(&m->lm_buflens[i]);
560                 required_len += cfs_size_round(m->lm_buflens[i]);
561         }
562
563         if (len < required_len) {
564                 CERROR("len: %d, required_len %d\n", len, required_len);
565                 CERROR("bufcount: %d\n", m->lm_bufcount);
566                 for (i = 0; i < m->lm_bufcount; i++)
567                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
568                 return -EINVAL;
569         }
570
571         return swabbed;
572 }
573
574 int __lustre_unpack_msg(struct lustre_msg *m, int len)
575 {
576         int required_len, rc;
577         ENTRY;
578
579         /* We can provide a slightly better error log, if we check the
580          * message magic and version first.  In the future, struct
581          * lustre_msg may grow, and we'd like to log a version mismatch,
582          * rather than a short message.
583          *
584          */
585         required_len = offsetof(struct lustre_msg, lm_magic) +
586                        sizeof(m->lm_magic);
587         if (len < required_len) {
588                 /* can't even look inside the message */
589                 CERROR("message length %d too small for magic/version check\n",
590                        len);
591                 RETURN(-EINVAL);
592         }
593
594         rc = lustre_unpack_msg_v2(m, len);
595
596         RETURN(rc);
597 }
598 EXPORT_SYMBOL(__lustre_unpack_msg);
599
600 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
601 {
602         int rc;
603         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
604         if (rc == 1) {
605                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
606                 rc = 0;
607         }
608         return rc;
609 }
610
611 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
612 {
613         int rc;
614         rc = __lustre_unpack_msg(req->rq_repmsg, len);
615         if (rc == 1) {
616                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
617                 rc = 0;
618         }
619         return rc;
620 }
621
622 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
623                                                const int inout, int offset)
624 {
625         struct ptlrpc_body *pb;
626         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
627
628         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
629         if (!pb) {
630                 CERROR("error unpacking ptlrpc body\n");
631                 return -EFAULT;
632         }
633         if (ptlrpc_buf_need_swab(req, inout, offset)) {
634                 lustre_swab_ptlrpc_body(pb);
635                 ptlrpc_buf_set_swabbed(req, inout, offset);
636         }
637
638         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
639                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
640                  return -EINVAL;
641         }
642
643         if (!inout)
644                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
645
646         return 0;
647 }
648
649 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
650 {
651         switch (req->rq_reqmsg->lm_magic) {
652         case LUSTRE_MSG_MAGIC_V2:
653                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
654         default:
655                 CERROR("bad lustre msg magic: %08x\n",
656                        req->rq_reqmsg->lm_magic);
657                 return -EINVAL;
658         }
659 }
660
661 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
662 {
663         switch (req->rq_repmsg->lm_magic) {
664         case LUSTRE_MSG_MAGIC_V2:
665                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
666         default:
667                 CERROR("bad lustre msg magic: %08x\n",
668                        req->rq_repmsg->lm_magic);
669                 return -EINVAL;
670         }
671 }
672
673 static inline __u32 lustre_msg_buflen_v2(struct lustre_msg_v2 *m, __u32 n)
674 {
675         if (n >= m->lm_bufcount)
676                 return 0;
677
678         return m->lm_buflens[n];
679 }
680
681 /**
682  * lustre_msg_buflen - return the length of buffer \a n in message \a m
683  * \param m lustre_msg (request or reply) to look at
684  * \param n message index (base 0)
685  *
686  * returns zero for non-existent message indices
687  */
688 __u32 lustre_msg_buflen(struct lustre_msg *m, __u32 n)
689 {
690         switch (m->lm_magic) {
691         case LUSTRE_MSG_MAGIC_V2:
692                 return lustre_msg_buflen_v2(m, n);
693         default:
694                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
695                 return 0;
696         }
697 }
698 EXPORT_SYMBOL(lustre_msg_buflen);
699
700 static inline void
701 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, __u32 n, __u32 len)
702 {
703         if (n >= m->lm_bufcount)
704                 LBUG();
705
706         m->lm_buflens[n] = len;
707 }
708
709 void lustre_msg_set_buflen(struct lustre_msg *m, __u32 n, __u32 len)
710 {
711         switch (m->lm_magic) {
712         case LUSTRE_MSG_MAGIC_V2:
713                 lustre_msg_set_buflen_v2(m, n, len);
714                 return;
715         default:
716                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
717         }
718 }
719
720 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
721  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
722 __u32 lustre_msg_bufcount(struct lustre_msg *m)
723 {
724         switch (m->lm_magic) {
725         case LUSTRE_MSG_MAGIC_V2:
726                 return m->lm_bufcount;
727         default:
728                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
729                 return 0;
730         }
731 }
732
733 char *lustre_msg_string(struct lustre_msg *m, __u32 index, __u32 max_len)
734 {
735         /* max_len == 0 means the string should fill the buffer */
736         char *str;
737         __u32 slen, blen;
738
739         switch (m->lm_magic) {
740         case LUSTRE_MSG_MAGIC_V2:
741                 str = lustre_msg_buf_v2(m, index, 0);
742                 blen = lustre_msg_buflen_v2(m, index);
743                 break;
744         default:
745                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
746         }
747
748         if (str == NULL) {
749                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
750                 return NULL;
751         }
752
753         slen = strnlen(str, blen);
754
755         if (slen == blen) {                     /* not NULL terminated */
756                 CERROR("can't unpack non-NULL terminated string in "
757                         "msg %p buffer[%d] len %d\n", m, index, blen);
758                 return NULL;
759         }
760
761         if (max_len == 0) {
762                 if (slen != blen - 1) {
763                         CERROR("can't unpack short string in msg %p "
764                                "buffer[%d] len %d: strlen %d\n",
765                                m, index, blen, slen);
766                         return NULL;
767                 }
768         } else if (slen > max_len) {
769                 CERROR("can't unpack oversized string in msg %p "
770                        "buffer[%d] len %d strlen %d: max %d expected\n",
771                        m, index, blen, slen, max_len);
772                 return NULL;
773         }
774
775         return str;
776 }
777
778 /* Wrap up the normal fixed length cases */
779 static inline void *__lustre_swab_buf(struct lustre_msg *msg, __u32 index,
780                                       __u32 min_size, void *swabber)
781 {
782         void *ptr = NULL;
783
784         LASSERT(msg != NULL);
785         switch (msg->lm_magic) {
786         case LUSTRE_MSG_MAGIC_V2:
787                 ptr = lustre_msg_buf_v2(msg, index, min_size);
788                 break;
789         default:
790                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
791         }
792
793         if (ptr != NULL && swabber != NULL)
794                 ((void (*)(void *))swabber)(ptr);
795
796         return ptr;
797 }
798
799 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
800 {
801         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
802                                  sizeof(struct ptlrpc_body_v2));
803 }
804
805 enum lustre_msghdr lustre_msghdr_get_flags(struct lustre_msg *msg)
806 {
807         switch (msg->lm_magic) {
808         case LUSTRE_MSG_MAGIC_V2:
809                 /* already in host endian */
810                 return msg->lm_flags;
811         default:
812                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
813                 return 0;
814         }
815 }
816 EXPORT_SYMBOL(lustre_msghdr_get_flags);
817
818 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
819 {
820         switch (msg->lm_magic) {
821         case LUSTRE_MSG_MAGIC_V2:
822                 msg->lm_flags = flags;
823                 return;
824         default:
825                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
826         }
827 }
828
829 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
830 {
831         switch (msg->lm_magic) {
832         case LUSTRE_MSG_MAGIC_V2: {
833                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
834                 if (pb != NULL)
835                         return pb->pb_flags;
836
837                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
838         }
839         /* no break */
840         default:
841                 /* flags might be printed in debug code while message
842                  * uninitialized */
843                 return 0;
844         }
845 }
846 EXPORT_SYMBOL(lustre_msg_get_flags);
847
848 void lustre_msg_add_flags(struct lustre_msg *msg, __u32 flags)
849 {
850         switch (msg->lm_magic) {
851         case LUSTRE_MSG_MAGIC_V2: {
852                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
853                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
854                 pb->pb_flags |= flags;
855                 return;
856         }
857         default:
858                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
859         }
860 }
861 EXPORT_SYMBOL(lustre_msg_add_flags);
862
863 void lustre_msg_set_flags(struct lustre_msg *msg, __u32 flags)
864 {
865         switch (msg->lm_magic) {
866         case LUSTRE_MSG_MAGIC_V2: {
867                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
868                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
869                 pb->pb_flags = flags;
870                 return;
871         }
872         default:
873                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
874         }
875 }
876
877 void lustre_msg_clear_flags(struct lustre_msg *msg, __u32 flags)
878 {
879         switch (msg->lm_magic) {
880         case LUSTRE_MSG_MAGIC_V2: {
881                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
882                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
883                 pb->pb_flags &= ~flags;
884
885                 return;
886         }
887         default:
888                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
889         }
890 }
891 EXPORT_SYMBOL(lustre_msg_clear_flags);
892
893 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
894 {
895         switch (msg->lm_magic) {
896         case LUSTRE_MSG_MAGIC_V2: {
897                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
898                 if (pb != NULL)
899                         return pb->pb_op_flags;
900
901                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
902         }
903         /* no break */
904         default:
905                 return 0;
906         }
907 }
908
909 void lustre_msg_add_op_flags(struct lustre_msg *msg, __u32 flags)
910 {
911         switch (msg->lm_magic) {
912         case LUSTRE_MSG_MAGIC_V2: {
913                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
914                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
915                 pb->pb_op_flags |= flags;
916                 return;
917         }
918         default:
919                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
920         }
921 }
922 EXPORT_SYMBOL(lustre_msg_add_op_flags);
923
924 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
925 {
926         switch (msg->lm_magic) {
927         case LUSTRE_MSG_MAGIC_V2: {
928                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
929                 if (pb == NULL) {
930                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
931                         return NULL;
932                 }
933                 return &pb->pb_handle;
934         }
935         default:
936                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
937                 return NULL;
938         }
939 }
940
941 __u32 lustre_msg_get_type(struct lustre_msg *msg)
942 {
943         switch (msg->lm_magic) {
944         case LUSTRE_MSG_MAGIC_V2: {
945                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
946                 if (pb == NULL) {
947                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
948                         return PTL_RPC_MSG_ERR;
949                 }
950                 return pb->pb_type;
951         }
952         default:
953                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
954                 return PTL_RPC_MSG_ERR;
955         }
956 }
957 EXPORT_SYMBOL(lustre_msg_get_type);
958
959 enum lustre_msg_version lustre_msg_get_version(struct lustre_msg *msg)
960 {
961         switch (msg->lm_magic) {
962         case LUSTRE_MSG_MAGIC_V2: {
963                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
964                 if (pb == NULL) {
965                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
966                         return 0;
967                 }
968                 return pb->pb_version;
969         }
970         default:
971                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
972                 return 0;
973         }
974 }
975
976 void lustre_msg_add_version(struct lustre_msg *msg, __u32 version)
977 {
978         switch (msg->lm_magic) {
979         case LUSTRE_MSG_MAGIC_V2: {
980                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
981                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
982                 pb->pb_version |= version;
983                 return;
984         }
985         default:
986                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
987         }
988 }
989
990 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
991 {
992         switch (msg->lm_magic) {
993         case LUSTRE_MSG_MAGIC_V2: {
994                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
995                 if (pb == NULL) {
996                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
997                         return 0;
998                 }
999                 return pb->pb_opc;
1000         }
1001         default:
1002                 CERROR("incorrect message magic: %08x (msg:%p)\n",
1003                        msg->lm_magic, msg);
1004                 return 0;
1005         }
1006 }
1007 EXPORT_SYMBOL(lustre_msg_get_opc);
1008
1009 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1010 {
1011         switch (msg->lm_magic) {
1012         case LUSTRE_MSG_MAGIC_V2: {
1013                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1014                 if (pb == NULL) {
1015                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1016                         return 0;
1017                 }
1018                 return pb->pb_last_xid;
1019         }
1020         default:
1021                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1022                 return 0;
1023         }
1024 }
1025 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1026
1027 __u16 lustre_msg_get_tag(struct lustre_msg *msg)
1028 {
1029         switch (msg->lm_magic) {
1030         case LUSTRE_MSG_MAGIC_V2: {
1031                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1032                 if (!pb) {
1033                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1034                         return 0;
1035                 }
1036                 return pb->pb_tag;
1037         }
1038         default:
1039                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1040                 return 0;
1041         }
1042 }
1043 EXPORT_SYMBOL(lustre_msg_get_tag);
1044
1045 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1046 {
1047         switch (msg->lm_magic) {
1048         case LUSTRE_MSG_MAGIC_V2: {
1049                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1050                 if (pb == NULL) {
1051                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1052                         return 0;
1053                 }
1054                 return pb->pb_last_committed;
1055         }
1056         default:
1057                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1058                 return 0;
1059         }
1060 }
1061 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1062
1063 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1064 {
1065         switch (msg->lm_magic) {
1066         case LUSTRE_MSG_MAGIC_V2: {
1067                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1068                 if (pb == NULL) {
1069                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1070                         return NULL;
1071                 }
1072                 return pb->pb_pre_versions;
1073         }
1074         default:
1075                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1076                 return NULL;
1077         }
1078 }
1079 EXPORT_SYMBOL(lustre_msg_get_versions);
1080
1081 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1082 {
1083         switch (msg->lm_magic) {
1084         case LUSTRE_MSG_MAGIC_V2: {
1085                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1086                 if (pb == NULL) {
1087                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1088                         return 0;
1089                 }
1090                 return pb->pb_transno;
1091         }
1092         default:
1093                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1094                 return 0;
1095         }
1096 }
1097 EXPORT_SYMBOL(lustre_msg_get_transno);
1098
1099 int lustre_msg_get_status(struct lustre_msg *msg)
1100 {
1101         switch (msg->lm_magic) {
1102         case LUSTRE_MSG_MAGIC_V2: {
1103                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1104                 if (pb != NULL)
1105                         return pb->pb_status;
1106                 CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1107         }
1108         /* no break */
1109         default:
1110                 /* status might be printed in debug code while message
1111                 * uninitialized */
1112                 return -EINVAL;
1113         }
1114 }
1115 EXPORT_SYMBOL(lustre_msg_get_status);
1116
1117 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1118 {
1119         switch (msg->lm_magic) {
1120         case LUSTRE_MSG_MAGIC_V2: {
1121                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1122                 if (pb == NULL) {
1123                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1124                         return -EINVAL;
1125                 }
1126                 return pb->pb_slv;
1127         }
1128         default:
1129                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1130                 return -EINVAL;
1131         }
1132 }
1133
1134
1135 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1136 {
1137         switch (msg->lm_magic) {
1138         case LUSTRE_MSG_MAGIC_V2: {
1139                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1140                 if (pb == NULL) {
1141                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1142                         return;
1143                 }
1144                 pb->pb_slv = slv;
1145                 return;
1146         }
1147         default:
1148                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1149                 return;
1150         }
1151 }
1152
1153 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1154 {
1155         switch (msg->lm_magic) {
1156         case LUSTRE_MSG_MAGIC_V2: {
1157                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1158                 if (pb == NULL) {
1159                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1160                         return -EINVAL;
1161                 }
1162                 return pb->pb_limit;
1163         }
1164         default:
1165                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1166                 return -EINVAL;
1167         }
1168 }
1169
1170
1171 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1172 {
1173         switch (msg->lm_magic) {
1174         case LUSTRE_MSG_MAGIC_V2: {
1175                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1176                 if (pb == NULL) {
1177                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1178                         return;
1179                 }
1180                 pb->pb_limit = limit;
1181                 return;
1182         }
1183         default:
1184                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1185                 return;
1186         }
1187 }
1188
1189 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1190 {
1191         switch (msg->lm_magic) {
1192         case LUSTRE_MSG_MAGIC_V2: {
1193                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1194                 if (pb == NULL) {
1195                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1196                         return 0;
1197                 }
1198                 return pb->pb_conn_cnt;
1199         }
1200         default:
1201                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1202                 return 0;
1203         }
1204 }
1205 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1206
1207 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1208 {
1209         switch (msg->lm_magic) {
1210         case LUSTRE_MSG_MAGIC_V2:
1211                 return msg->lm_magic;
1212         default:
1213                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1214                 return 0;
1215         }
1216 }
1217
1218 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1219 {
1220         switch (msg->lm_magic) {
1221         case LUSTRE_MSG_MAGIC_V2: {
1222                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1223                 if (pb == NULL) {
1224                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1225                         return 0;
1226                 }
1227                 return pb->pb_timeout;
1228         }
1229         default:
1230                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1231                 return 0;
1232         }
1233 }
1234
1235 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1236 {
1237         switch (msg->lm_magic) {
1238         case LUSTRE_MSG_MAGIC_V2: {
1239                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1240                 if (pb == NULL) {
1241                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1242                         return 0;
1243                 }
1244                 return pb->pb_service_time;
1245         }
1246         default:
1247                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1248                 return 0;
1249         }
1250 }
1251
1252 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1253 {
1254         switch (msg->lm_magic) {
1255         case LUSTRE_MSG_MAGIC_V2: {
1256                 struct ptlrpc_body *pb =
1257                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1258                                           sizeof(struct ptlrpc_body));
1259                 if (!pb)
1260                         return NULL;
1261
1262                 return pb->pb_jobid;
1263         }
1264         default:
1265                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1266                 return NULL;
1267         }
1268 }
1269 EXPORT_SYMBOL(lustre_msg_get_jobid);
1270
1271 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1272 {
1273         switch (msg->lm_magic) {
1274         case LUSTRE_MSG_MAGIC_V2:
1275                 return msg->lm_cksum;
1276         default:
1277                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1278                 return 0;
1279         }
1280 }
1281
1282 __u64 lustre_msg_get_mbits(struct lustre_msg *msg)
1283 {
1284         switch (msg->lm_magic) {
1285         case LUSTRE_MSG_MAGIC_V2: {
1286                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1287                 if (pb == NULL) {
1288                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1289                         return 0;
1290                 }
1291                 return pb->pb_mbits;
1292         }
1293         default:
1294                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1295                 return 0;
1296         }
1297 }
1298
1299 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1300 {
1301         switch (msg->lm_magic) {
1302         case LUSTRE_MSG_MAGIC_V2: {
1303                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1304                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1305
1306                 unsigned int hsize = 4;
1307                 __u32 crc;
1308
1309                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1310                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1311                                        len, NULL, 0, (unsigned char *)&crc,
1312                                        &hsize);
1313                 return crc;
1314         }
1315         default:
1316                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1317                 return 0;
1318         }
1319 }
1320
1321 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1322 {
1323         switch (msg->lm_magic) {
1324         case LUSTRE_MSG_MAGIC_V2: {
1325                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1326                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1327                 pb->pb_handle = *handle;
1328                 return;
1329         }
1330         default:
1331                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1332         }
1333 }
1334
1335 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1336 {
1337         switch (msg->lm_magic) {
1338         case LUSTRE_MSG_MAGIC_V2: {
1339                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1340                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1341                 pb->pb_type = type;
1342                 return;
1343                 }
1344         default:
1345                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1346         }
1347 }
1348
1349 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1350 {
1351         switch (msg->lm_magic) {
1352         case LUSTRE_MSG_MAGIC_V2: {
1353                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1354                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1355                 pb->pb_opc = opc;
1356                 return;
1357         }
1358         default:
1359                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1360         }
1361 }
1362
1363 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1364 {
1365         switch (msg->lm_magic) {
1366         case LUSTRE_MSG_MAGIC_V2: {
1367                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1368                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1369                 pb->pb_last_xid = last_xid;
1370                 return;
1371         }
1372         default:
1373                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1374         }
1375 }
1376 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1377
1378 void lustre_msg_set_tag(struct lustre_msg *msg, __u16 tag)
1379 {
1380         switch (msg->lm_magic) {
1381         case LUSTRE_MSG_MAGIC_V2: {
1382                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1383                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1384                 pb->pb_tag = tag;
1385                 return;
1386         }
1387         default:
1388                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1389         }
1390 }
1391 EXPORT_SYMBOL(lustre_msg_set_tag);
1392
1393 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1394 {
1395         switch (msg->lm_magic) {
1396         case LUSTRE_MSG_MAGIC_V2: {
1397                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1398                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1399                 pb->pb_last_committed = last_committed;
1400                 return;
1401         }
1402         default:
1403                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1404         }
1405 }
1406
1407 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1408 {
1409         switch (msg->lm_magic) {
1410         case LUSTRE_MSG_MAGIC_V2: {
1411                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1412                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1413                 pb->pb_pre_versions[0] = versions[0];
1414                 pb->pb_pre_versions[1] = versions[1];
1415                 pb->pb_pre_versions[2] = versions[2];
1416                 pb->pb_pre_versions[3] = versions[3];
1417                 return;
1418         }
1419         default:
1420                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1421         }
1422 }
1423 EXPORT_SYMBOL(lustre_msg_set_versions);
1424
1425 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1426 {
1427         switch (msg->lm_magic) {
1428         case LUSTRE_MSG_MAGIC_V2: {
1429                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1430                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1431                 pb->pb_transno = transno;
1432                 return;
1433         }
1434         default:
1435                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1436         }
1437 }
1438 EXPORT_SYMBOL(lustre_msg_set_transno);
1439
1440 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1441 {
1442         switch (msg->lm_magic) {
1443         case LUSTRE_MSG_MAGIC_V2: {
1444                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1445                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1446                 pb->pb_status = status;
1447                 return;
1448         }
1449         default:
1450                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1451         }
1452 }
1453 EXPORT_SYMBOL(lustre_msg_set_status);
1454
1455 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1456 {
1457         switch (msg->lm_magic) {
1458         case LUSTRE_MSG_MAGIC_V2: {
1459                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1460                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1461                 pb->pb_conn_cnt = conn_cnt;
1462                 return;
1463         }
1464         default:
1465                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1466         }
1467 }
1468
1469 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1470 {
1471         switch (msg->lm_magic) {
1472         case LUSTRE_MSG_MAGIC_V2: {
1473                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1474                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1475                 pb->pb_timeout = timeout;
1476                 return;
1477         }
1478         default:
1479                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1480         }
1481 }
1482
1483 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1484 {
1485         switch (msg->lm_magic) {
1486         case LUSTRE_MSG_MAGIC_V2: {
1487                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1488                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1489                 pb->pb_service_time = service_time;
1490                 return;
1491         }
1492         default:
1493                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1494         }
1495 }
1496
1497 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1498 {
1499         switch (msg->lm_magic) {
1500         case LUSTRE_MSG_MAGIC_V2: {
1501                 __u32 opc = lustre_msg_get_opc(msg);
1502                 struct ptlrpc_body *pb;
1503
1504                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1505                  * See the comment in ptlrpc_request_pack(). */
1506                 if (!opc || opc == LDLM_BL_CALLBACK ||
1507                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1508                         return;
1509
1510                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1511                                        sizeof(struct ptlrpc_body));
1512                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1513
1514                 if (jobid != NULL)
1515                         memcpy(pb->pb_jobid, jobid, sizeof(pb->pb_jobid));
1516                 else if (pb->pb_jobid[0] == '\0')
1517                         lustre_get_jobid(pb->pb_jobid, sizeof(pb->pb_jobid));
1518                 return;
1519         }
1520         default:
1521                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1522         }
1523 }
1524 EXPORT_SYMBOL(lustre_msg_set_jobid);
1525
1526 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1527 {
1528         switch (msg->lm_magic) {
1529         case LUSTRE_MSG_MAGIC_V2:
1530                 msg->lm_cksum = cksum;
1531                 return;
1532         default:
1533                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1534         }
1535 }
1536
1537 void lustre_msg_set_mbits(struct lustre_msg *msg, __u64 mbits)
1538 {
1539         switch (msg->lm_magic) {
1540         case LUSTRE_MSG_MAGIC_V2: {
1541                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1542
1543                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1544                 pb->pb_mbits = mbits;
1545                 return;
1546         }
1547         default:
1548                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1549         }
1550 }
1551
1552 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1553 {
1554         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1555
1556         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1557                                          req->rq_pill.rc_area[RCL_SERVER]);
1558         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1559                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1560 }
1561 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1562
1563 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1564 {
1565         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1566         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1567                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1568 }
1569
1570 /**
1571  * Send a remote set_info_async.
1572  *
1573  * This may go from client to server or server to client.
1574  */
1575 int do_set_info_async(struct obd_import *imp,
1576                       int opcode, int version,
1577                       size_t keylen, void *key,
1578                       size_t vallen, void *val,
1579                       struct ptlrpc_request_set *set)
1580 {
1581         struct ptlrpc_request *req;
1582         char                  *tmp;
1583         int                    rc;
1584         ENTRY;
1585
1586         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1587         if (req == NULL)
1588                 RETURN(-ENOMEM);
1589
1590         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1591                              RCL_CLIENT, keylen);
1592         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1593                              RCL_CLIENT, vallen);
1594         rc = ptlrpc_request_pack(req, version, opcode);
1595         if (rc) {
1596                 ptlrpc_request_free(req);
1597                 RETURN(rc);
1598         }
1599
1600         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1601         memcpy(tmp, key, keylen);
1602         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1603         memcpy(tmp, val, vallen);
1604
1605         ptlrpc_request_set_replen(req);
1606
1607         if (set) {
1608                 ptlrpc_set_add_req(set, req);
1609                 ptlrpc_check_set(NULL, set);
1610         } else {
1611                 rc = ptlrpc_queue_wait(req);
1612                 ptlrpc_req_finished(req);
1613         }
1614
1615         RETURN(rc);
1616 }
1617 EXPORT_SYMBOL(do_set_info_async);
1618
1619 /* byte flipping routines for all wire types declared in
1620  * lustre_idl.h implemented here.
1621  */
1622 void lustre_swab_ptlrpc_body(struct ptlrpc_body *body)
1623 {
1624         __swab32s(&body->pb_type);
1625         __swab32s(&body->pb_version);
1626         __swab32s(&body->pb_opc);
1627         __swab32s(&body->pb_status);
1628         __swab64s(&body->pb_last_xid);
1629         __swab16s(&body->pb_tag);
1630         CLASSERT(offsetof(typeof(*body), pb_padding0) != 0);
1631         CLASSERT(offsetof(typeof(*body), pb_padding1) != 0);
1632         __swab64s(&body->pb_last_committed);
1633         __swab64s(&body->pb_transno);
1634         __swab32s(&body->pb_flags);
1635         __swab32s(&body->pb_op_flags);
1636         __swab32s(&body->pb_conn_cnt);
1637         __swab32s(&body->pb_timeout);
1638         __swab32s(&body->pb_service_time);
1639         __swab32s(&body->pb_limit);
1640         __swab64s(&body->pb_slv);
1641         __swab64s(&body->pb_pre_versions[0]);
1642         __swab64s(&body->pb_pre_versions[1]);
1643         __swab64s(&body->pb_pre_versions[2]);
1644         __swab64s(&body->pb_pre_versions[3]);
1645         __swab64s(&body->pb_mbits);
1646         CLASSERT(offsetof(typeof(*body), pb_padding64_0) != 0);
1647         CLASSERT(offsetof(typeof(*body), pb_padding64_1) != 0);
1648         CLASSERT(offsetof(typeof(*body), pb_padding64_2) != 0);
1649         /* While we need to maintain compatibility between
1650          * clients and servers without ptlrpc_body_v2 (< 2.3)
1651          * do not swab any fields beyond pb_jobid, as we are
1652          * using this swab function for both ptlrpc_body
1653          * and ptlrpc_body_v2. */
1654         /* pb_jobid is an ASCII string and should not be swabbed */
1655         CLASSERT(offsetof(typeof(*body), pb_jobid) != 0);
1656 }
1657
1658 void lustre_swab_connect(struct obd_connect_data *ocd)
1659 {
1660         __swab64s(&ocd->ocd_connect_flags);
1661         __swab32s(&ocd->ocd_version);
1662         __swab32s(&ocd->ocd_grant);
1663         __swab64s(&ocd->ocd_ibits_known);
1664         __swab32s(&ocd->ocd_index);
1665         __swab32s(&ocd->ocd_brw_size);
1666         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1667          * they are 8-byte values */
1668         __swab16s(&ocd->ocd_grant_tax_kb);
1669         __swab32s(&ocd->ocd_grant_max_blks);
1670         __swab64s(&ocd->ocd_transno);
1671         __swab32s(&ocd->ocd_group);
1672         __swab32s(&ocd->ocd_cksum_types);
1673         __swab32s(&ocd->ocd_instance);
1674         /* Fields after ocd_cksum_types are only accessible by the receiver
1675          * if the corresponding flag in ocd_connect_flags is set. Accessing
1676          * any field after ocd_maxbytes on the receiver without a valid flag
1677          * may result in out-of-bound memory access and kernel oops. */
1678         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1679                 __swab32s(&ocd->ocd_max_easize);
1680         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1681                 __swab64s(&ocd->ocd_maxbytes);
1682         if (ocd->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS)
1683                 __swab16s(&ocd->ocd_maxmodrpcs);
1684         CLASSERT(offsetof(typeof(*ocd), padding0) != 0);
1685         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1686         if (ocd->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1687                 __swab64s(&ocd->ocd_connect_flags2);
1688         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1689         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1690         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1691         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1692         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1693         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1694         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1695         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1696         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1697         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1698         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1699         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1700         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1701 }
1702
1703 static void lustre_swab_ost_layout(struct ost_layout *ol)
1704 {
1705         __swab32s(&ol->ol_stripe_size);
1706         __swab32s(&ol->ol_stripe_count);
1707         __swab64s(&ol->ol_comp_start);
1708         __swab64s(&ol->ol_comp_end);
1709         __swab32s(&ol->ol_comp_id);
1710 }
1711
1712 void lustre_swab_obdo (struct obdo  *o)
1713 {
1714         __swab64s(&o->o_valid);
1715         lustre_swab_ost_id(&o->o_oi);
1716         __swab64s(&o->o_parent_seq);
1717         __swab64s(&o->o_size);
1718         __swab64s(&o->o_mtime);
1719         __swab64s(&o->o_atime);
1720         __swab64s(&o->o_ctime);
1721         __swab64s(&o->o_blocks);
1722         __swab64s(&o->o_grant);
1723         __swab32s(&o->o_blksize);
1724         __swab32s(&o->o_mode);
1725         __swab32s(&o->o_uid);
1726         __swab32s(&o->o_gid);
1727         __swab32s(&o->o_flags);
1728         __swab32s(&o->o_nlink);
1729         __swab32s(&o->o_parent_oid);
1730         __swab32s(&o->o_misc);
1731         __swab64s(&o->o_ioepoch);
1732         __swab32s(&o->o_stripe_idx);
1733         __swab32s(&o->o_parent_ver);
1734         lustre_swab_ost_layout(&o->o_layout);
1735         __swab32s(&o->o_layout_version);
1736         __swab32s(&o->o_uid_h);
1737         __swab32s(&o->o_gid_h);
1738         __swab64s(&o->o_data_version);
1739         __swab32s(&o->o_projid);
1740         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1741         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1742         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1743
1744 }
1745 EXPORT_SYMBOL(lustre_swab_obdo);
1746
1747 void lustre_swab_obd_statfs (struct obd_statfs *os)
1748 {
1749         __swab64s(&os->os_type);
1750         __swab64s(&os->os_blocks);
1751         __swab64s(&os->os_bfree);
1752         __swab64s(&os->os_bavail);
1753         __swab64s(&os->os_files);
1754         __swab64s(&os->os_ffree);
1755         /* no need to swab os_fsid */
1756         __swab32s(&os->os_bsize);
1757         __swab32s(&os->os_namelen);
1758         __swab64s(&os->os_maxbytes);
1759         __swab32s(&os->os_state);
1760         __swab32s(&os->os_fprecreated);
1761         __swab32s(&os->os_granted);
1762         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1763         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1764         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1765         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1766         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1767         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1768         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1769 }
1770
1771 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1772 {
1773         lustre_swab_ost_id(&ioo->ioo_oid);
1774         __swab32s(&ioo->ioo_max_brw);
1775         __swab32s(&ioo->ioo_bufcnt);
1776 }
1777
1778 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1779 {
1780         __swab64s(&nbr->rnb_offset);
1781         __swab32s(&nbr->rnb_len);
1782         __swab32s(&nbr->rnb_flags);
1783 }
1784
1785 void lustre_swab_ost_body (struct ost_body *b)
1786 {
1787         lustre_swab_obdo (&b->oa);
1788 }
1789
1790 void lustre_swab_ost_last_id(u64 *id)
1791 {
1792         __swab64s(id);
1793 }
1794
1795 void lustre_swab_generic_32s(__u32 *val)
1796 {
1797         __swab32s(val);
1798 }
1799
1800 void lustre_swab_gl_lquota_desc(struct ldlm_gl_lquota_desc *desc)
1801 {
1802         lustre_swab_lu_fid(&desc->gl_id.qid_fid);
1803         __swab64s(&desc->gl_flags);
1804         __swab64s(&desc->gl_ver);
1805         __swab64s(&desc->gl_hardlimit);
1806         __swab64s(&desc->gl_softlimit);
1807         __swab64s(&desc->gl_time);
1808         CLASSERT(offsetof(typeof(*desc), gl_pad2) != 0);
1809 }
1810 EXPORT_SYMBOL(lustre_swab_gl_lquota_desc);
1811
1812 void lustre_swab_gl_barrier_desc(struct ldlm_gl_barrier_desc *desc)
1813 {
1814         __swab32s(&desc->lgbd_status);
1815         __swab32s(&desc->lgbd_timeout);
1816         CLASSERT(offsetof(typeof(*desc), lgbd_padding) != 0);
1817 }
1818 EXPORT_SYMBOL(lustre_swab_gl_barrier_desc);
1819
1820 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1821 {
1822         __swab64s(&lvb->lvb_size);
1823         __swab64s(&lvb->lvb_mtime);
1824         __swab64s(&lvb->lvb_atime);
1825         __swab64s(&lvb->lvb_ctime);
1826         __swab64s(&lvb->lvb_blocks);
1827 }
1828 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1829
1830 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1831 {
1832         __swab64s(&lvb->lvb_size);
1833         __swab64s(&lvb->lvb_mtime);
1834         __swab64s(&lvb->lvb_atime);
1835         __swab64s(&lvb->lvb_ctime);
1836         __swab64s(&lvb->lvb_blocks);
1837         __swab32s(&lvb->lvb_mtime_ns);
1838         __swab32s(&lvb->lvb_atime_ns);
1839         __swab32s(&lvb->lvb_ctime_ns);
1840         __swab32s(&lvb->lvb_padding);
1841 }
1842 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1843
1844 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1845 {
1846         __swab64s(&lvb->lvb_flags);
1847         __swab64s(&lvb->lvb_id_may_rel);
1848         __swab64s(&lvb->lvb_id_rel);
1849         __swab64s(&lvb->lvb_id_qunit);
1850         __swab64s(&lvb->lvb_pad1);
1851 }
1852 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1853
1854 void lustre_swab_barrier_lvb(struct barrier_lvb *lvb)
1855 {
1856         __swab32s(&lvb->lvb_status);
1857         __swab32s(&lvb->lvb_index);
1858         CLASSERT(offsetof(typeof(*lvb), lvb_padding) != 0);
1859 }
1860 EXPORT_SYMBOL(lustre_swab_barrier_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_version);
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         __swab32s(&b->mbo_layout_gen);
1885         __swab32s(&b->mbo_suppgid);
1886         __swab32s(&b->mbo_eadatasize);
1887         __swab32s(&b->mbo_aclsize);
1888         __swab32s(&b->mbo_max_mdsize);
1889         CLASSERT(offsetof(typeof(*b), mbo_unused3) != 0);
1890         __swab32s(&b->mbo_uid_h);
1891         __swab32s(&b->mbo_gid_h);
1892         __swab32s(&b->mbo_projid);
1893         __swab64s(&b->mbo_dom_size);
1894         __swab64s(&b->mbo_dom_blocks);
1895         CLASSERT(offsetof(typeof(*b), mbo_padding_8) != 0);
1896         CLASSERT(offsetof(typeof(*b), mbo_padding_9) != 0);
1897         CLASSERT(offsetof(typeof(*b), mbo_padding_10) != 0);
1898 }
1899
1900 void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b)
1901 {
1902         /* mio_open_handle is opaque */
1903         CLASSERT(offsetof(typeof(*b), mio_unused1) != 0);
1904         CLASSERT(offsetof(typeof(*b), mio_unused2) != 0);
1905         CLASSERT(offsetof(typeof(*b), mio_padding) != 0);
1906 }
1907
1908 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1909 {
1910         int i;
1911
1912         __swab32s(&mti->mti_lustre_ver);
1913         __swab32s(&mti->mti_stripe_index);
1914         __swab32s(&mti->mti_config_ver);
1915         __swab32s(&mti->mti_flags);
1916         __swab32s(&mti->mti_instance);
1917         __swab32s(&mti->mti_nid_count);
1918         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1919         for (i = 0; i < MTI_NIDS_MAX; i++)
1920                 __swab64s(&mti->mti_nids[i]);
1921 }
1922
1923 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1924 {
1925         __u8 i;
1926
1927         __swab64s(&entry->mne_version);
1928         __swab32s(&entry->mne_instance);
1929         __swab32s(&entry->mne_index);
1930         __swab32s(&entry->mne_length);
1931
1932         /* mne_nid_(count|type) must be one byte size because we're gonna
1933          * access it w/o swapping. */
1934         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1935         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1936
1937         /* remove this assertion if ipv6 is supported. */
1938         LASSERT(entry->mne_nid_type == 0);
1939         for (i = 0; i < entry->mne_nid_count; i++) {
1940                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1941                 __swab64s(&entry->u.nids[i]);
1942         }
1943 }
1944 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1945
1946 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1947 {
1948         __swab64s(&body->mcb_offset);
1949         __swab32s(&body->mcb_units);
1950         __swab16s(&body->mcb_type);
1951 }
1952
1953 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1954 {
1955         __swab64s(&body->mcr_offset);
1956         __swab64s(&body->mcr_size);
1957 }
1958
1959 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1960 {
1961         __swab64s (&i->dqi_bgrace);
1962         __swab64s (&i->dqi_igrace);
1963         __swab32s (&i->dqi_flags);
1964         __swab32s (&i->dqi_valid);
1965 }
1966
1967 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1968 {
1969         __swab64s (&b->dqb_ihardlimit);
1970         __swab64s (&b->dqb_isoftlimit);
1971         __swab64s (&b->dqb_curinodes);
1972         __swab64s (&b->dqb_bhardlimit);
1973         __swab64s (&b->dqb_bsoftlimit);
1974         __swab64s (&b->dqb_curspace);
1975         __swab64s (&b->dqb_btime);
1976         __swab64s (&b->dqb_itime);
1977         __swab32s (&b->dqb_valid);
1978         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1979 }
1980
1981 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1982 {
1983         __swab32s (&q->qc_cmd);
1984         __swab32s (&q->qc_type);
1985         __swab32s (&q->qc_id);
1986         __swab32s (&q->qc_stat);
1987         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1988         lustre_swab_obd_dqblk (&q->qc_dqblk);
1989 }
1990
1991 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
1992 {
1993         lustre_swab_lu_fid(&gf->gf_fid);
1994         __swab64s(&gf->gf_recno);
1995         __swab32s(&gf->gf_linkno);
1996         __swab32s(&gf->gf_pathlen);
1997 }
1998 EXPORT_SYMBOL(lustre_swab_fid2path);
1999
2000 static void lustre_swab_fiemap_extent(struct fiemap_extent *fm_extent)
2001 {
2002         __swab64s(&fm_extent->fe_logical);
2003         __swab64s(&fm_extent->fe_physical);
2004         __swab64s(&fm_extent->fe_length);
2005         __swab32s(&fm_extent->fe_flags);
2006         __swab32s(&fm_extent->fe_device);
2007 }
2008
2009 void lustre_swab_fiemap(struct fiemap *fiemap)
2010 {
2011         __u32 i;
2012
2013         __swab64s(&fiemap->fm_start);
2014         __swab64s(&fiemap->fm_length);
2015         __swab32s(&fiemap->fm_flags);
2016         __swab32s(&fiemap->fm_mapped_extents);
2017         __swab32s(&fiemap->fm_extent_count);
2018         __swab32s(&fiemap->fm_reserved);
2019
2020         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2021                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2022 }
2023
2024 void lustre_swab_idx_info(struct idx_info *ii)
2025 {
2026         __swab32s(&ii->ii_magic);
2027         __swab32s(&ii->ii_flags);
2028         __swab16s(&ii->ii_count);
2029         __swab32s(&ii->ii_attrs);
2030         lustre_swab_lu_fid(&ii->ii_fid);
2031         __swab64s(&ii->ii_version);
2032         __swab64s(&ii->ii_hash_start);
2033         __swab64s(&ii->ii_hash_end);
2034         __swab16s(&ii->ii_keysize);
2035         __swab16s(&ii->ii_recsize);
2036 }
2037
2038 void lustre_swab_lip_header(struct lu_idxpage *lip)
2039 {
2040         /* swab header */
2041         __swab32s(&lip->lip_magic);
2042         __swab16s(&lip->lip_flags);
2043         __swab16s(&lip->lip_nr);
2044 }
2045 EXPORT_SYMBOL(lustre_swab_lip_header);
2046
2047 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2048 {
2049         __swab32s(&rr->rr_opcode);
2050         __swab32s(&rr->rr_cap);
2051         __swab32s(&rr->rr_fsuid);
2052         /* rr_fsuid_h is unused */
2053         __swab32s(&rr->rr_fsgid);
2054         /* rr_fsgid_h is unused */
2055         __swab32s(&rr->rr_suppgid1);
2056         /* rr_suppgid1_h is unused */
2057         __swab32s(&rr->rr_suppgid2);
2058         /* rr_suppgid2_h is unused */
2059         lustre_swab_lu_fid(&rr->rr_fid1);
2060         lustre_swab_lu_fid(&rr->rr_fid2);
2061         __swab64s(&rr->rr_mtime);
2062         __swab64s(&rr->rr_atime);
2063         __swab64s(&rr->rr_ctime);
2064         __swab64s(&rr->rr_size);
2065         __swab64s(&rr->rr_blocks);
2066         __swab32s(&rr->rr_bias);
2067         __swab32s(&rr->rr_mode);
2068         __swab32s(&rr->rr_flags);
2069         __swab32s(&rr->rr_flags_h);
2070         __swab32s(&rr->rr_umask);
2071         __swab16s(&rr->rr_mirror_id);
2072
2073         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2074 };
2075
2076 void lustre_swab_lov_desc (struct lov_desc *ld)
2077 {
2078         __swab32s (&ld->ld_tgt_count);
2079         __swab32s (&ld->ld_active_tgt_count);
2080         __swab32s (&ld->ld_default_stripe_count);
2081         __swab32s (&ld->ld_pattern);
2082         __swab64s (&ld->ld_default_stripe_size);
2083         __swab64s (&ld->ld_default_stripe_offset);
2084         __swab32s (&ld->ld_qos_maxage);
2085         /* uuid endian insensitive */
2086 }
2087 EXPORT_SYMBOL(lustre_swab_lov_desc);
2088
2089 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2090 {
2091         __swab32s (&ld->ld_tgt_count);
2092         __swab32s (&ld->ld_active_tgt_count);
2093         __swab32s (&ld->ld_default_stripe_count);
2094         __swab32s (&ld->ld_pattern);
2095         __swab64s (&ld->ld_default_hash_size);
2096         __swab32s (&ld->ld_qos_maxage);
2097         /* uuid endian insensitive */
2098 }
2099
2100 /* This structure is always in little-endian */
2101 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2102 {
2103         int i;
2104
2105         __swab32s(&lmm1->lmv_magic);
2106         __swab32s(&lmm1->lmv_stripe_count);
2107         __swab32s(&lmm1->lmv_master_mdt_index);
2108         __swab32s(&lmm1->lmv_hash_type);
2109         __swab32s(&lmm1->lmv_layout_version);
2110         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2111                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2112 }
2113
2114 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2115 {
2116         switch (lmm->lmv_magic) {
2117         case LMV_MAGIC_V1:
2118                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2119                 break;
2120         default:
2121                 break;
2122         }
2123 }
2124 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2125
2126 void lustre_swab_lmv_user_md_objects(struct lmv_user_mds_data *lmd,
2127                                      int stripe_count)
2128 {
2129         int i;
2130
2131         for (i = 0; i < stripe_count; i++)
2132                 __swab32s(&(lmd[i].lum_mds));
2133 }
2134 EXPORT_SYMBOL(lustre_swab_lmv_user_md_objects);
2135
2136
2137 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2138 {
2139         __u32 count;
2140
2141         if (lum->lum_magic == LMV_MAGIC_FOREIGN) {
2142                 __swab32s(&lum->lum_magic);
2143                 __swab32s(&((struct lmv_foreign_md *)lum)->lfm_length);
2144                 return;
2145         }
2146
2147         count = lum->lum_stripe_count;
2148         __swab32s(&lum->lum_magic);
2149         __swab32s(&lum->lum_stripe_count);
2150         __swab32s(&lum->lum_stripe_offset);
2151         __swab32s(&lum->lum_hash_type);
2152         __swab32s(&lum->lum_type);
2153         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2154         switch (lum->lum_magic) {
2155         case LMV_USER_MAGIC_SPECIFIC:
2156                 count = lum->lum_stripe_count;
2157         case __swab32(LMV_USER_MAGIC_SPECIFIC):
2158                 lustre_swab_lmv_user_md_objects(lum->lum_objects, count);
2159                 break;
2160         default:
2161                 break;
2162         }
2163 }
2164 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2165
2166 static void lustre_print_v1v3(unsigned int lvl, struct lov_user_md *lum,
2167                               const char *msg)
2168 {
2169         CDEBUG(lvl, "%s lov_user_md %p:\n", msg, lum);
2170         CDEBUG(lvl, "\tlmm_magic: %#x\n", lum->lmm_magic);
2171         CDEBUG(lvl, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2172         CDEBUG(lvl, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi));
2173         CDEBUG(lvl, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi));
2174         CDEBUG(lvl, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2175         CDEBUG(lvl, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2176         CDEBUG(lvl, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2177                lum->lmm_stripe_offset);
2178         if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
2179                 struct lov_user_md_v3 *v3 = (void *)lum;
2180                 CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2181         }
2182         if (lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2183                 struct lov_user_md_v3 *v3 = (void *)lum;
2184                 int i;
2185
2186                 if (v3->lmm_pool_name[0] != '\0')
2187                         CDEBUG(lvl, "\tlmm_pool_name: %s\n", v3->lmm_pool_name);
2188
2189                 CDEBUG(lvl, "\ttarget list:\n");
2190                 for (i = 0; i < v3->lmm_stripe_count; i++)
2191                         CDEBUG(lvl, "\t\t%u\n", v3->lmm_objects[i].l_ost_idx);
2192         }
2193 }
2194
2195 void lustre_print_user_md(unsigned int lvl, struct lov_user_md *lum,
2196                           const char *msg)
2197 {
2198         struct lov_comp_md_v1   *comp_v1;
2199         int                      i;
2200
2201         if (likely(!cfs_cdebug_show(lvl, DEBUG_SUBSYSTEM)))
2202                 return;
2203
2204         if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
2205             lum->lmm_magic == LOV_USER_MAGIC_V3) {
2206                 lustre_print_v1v3(lvl, lum, msg);
2207                 return;
2208         }
2209
2210         if (lum->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
2211                 CDEBUG(lvl, "%s: bad magic: %x\n", msg, lum->lmm_magic);
2212                 return;
2213         }
2214
2215         comp_v1 = (struct lov_comp_md_v1 *)lum;
2216         CDEBUG(lvl, "%s: lov_comp_md_v1 %p:\n", msg, lum);
2217         CDEBUG(lvl, "\tlcm_magic: %#x\n", comp_v1->lcm_magic);
2218         CDEBUG(lvl, "\tlcm_size: %#x\n", comp_v1->lcm_size);
2219         CDEBUG(lvl, "\tlcm_layout_gen: %#x\n", comp_v1->lcm_layout_gen);
2220         CDEBUG(lvl, "\tlcm_flags: %#x\n", comp_v1->lcm_flags);
2221         CDEBUG(lvl, "\tlcm_entry_count: %#x\n\n", comp_v1->lcm_entry_count);
2222         CDEBUG(lvl, "\tlcm_mirror_count: %#x\n\n", comp_v1->lcm_mirror_count);
2223
2224         for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2225                 struct lov_comp_md_entry_v1 *ent = &comp_v1->lcm_entries[i];
2226                 struct lov_user_md *v1;
2227
2228                 CDEBUG(lvl, "\tentry %d:\n", i);
2229                 CDEBUG(lvl, "\tlcme_id: %#x\n", ent->lcme_id);
2230                 CDEBUG(lvl, "\tlcme_flags: %#x\n", ent->lcme_flags);
2231                 if (ent->lcme_flags & LCME_FL_NOSYNC)
2232                         CDEBUG(lvl, "\tlcme_timestamp: %llu\n",
2233                                         ent->lcme_timestamp);
2234                 CDEBUG(lvl, "\tlcme_extent.e_start: %llu\n",
2235                        ent->lcme_extent.e_start);
2236                 CDEBUG(lvl, "\tlcme_extent.e_end: %llu\n",
2237                        ent->lcme_extent.e_end);
2238                 CDEBUG(lvl, "\tlcme_offset: %#x\n", ent->lcme_offset);
2239                 CDEBUG(lvl, "\tlcme_size: %#x\n\n", ent->lcme_size);
2240
2241                 v1 = (struct lov_user_md *)((char *)comp_v1 +
2242                                 comp_v1->lcm_entries[i].lcme_offset);
2243                 lustre_print_v1v3(lvl, v1, msg);
2244         }
2245 }
2246 EXPORT_SYMBOL(lustre_print_user_md);
2247
2248 static void lustre_swab_lmm_oi(struct ost_id *oi)
2249 {
2250         __swab64s(&oi->oi.oi_id);
2251         __swab64s(&oi->oi.oi_seq);
2252 }
2253
2254 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2255 {
2256         ENTRY;
2257         __swab32s(&lum->lmm_magic);
2258         __swab32s(&lum->lmm_pattern);
2259         lustre_swab_lmm_oi(&lum->lmm_oi);
2260         __swab32s(&lum->lmm_stripe_size);
2261         __swab16s(&lum->lmm_stripe_count);
2262         __swab16s(&lum->lmm_stripe_offset);
2263         EXIT;
2264 }
2265
2266 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2267 {
2268         ENTRY;
2269         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2270         lustre_swab_lov_user_md_common(lum);
2271         EXIT;
2272 }
2273 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2274
2275 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2276 {
2277         ENTRY;
2278         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2279         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2280         /* lmm_pool_name nothing to do with char */
2281         EXIT;
2282 }
2283 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2284
2285 void lustre_swab_lov_comp_md_v1(struct lov_comp_md_v1 *lum)
2286 {
2287         struct lov_comp_md_entry_v1     *ent;
2288         struct lov_user_md_v1   *v1;
2289         struct lov_user_md_v3   *v3;
2290         int     i;
2291         bool    cpu_endian;
2292         __u32   off, size;
2293         __u16   ent_count, stripe_count;
2294         ENTRY;
2295
2296         cpu_endian = lum->lcm_magic == LOV_USER_MAGIC_COMP_V1;
2297         ent_count = lum->lcm_entry_count;
2298         if (!cpu_endian)
2299                 __swab16s(&ent_count);
2300
2301         CDEBUG(D_IOCTL, "swabbing lov_user_comp_md v1\n");
2302         __swab32s(&lum->lcm_magic);
2303         __swab32s(&lum->lcm_size);
2304         __swab32s(&lum->lcm_layout_gen);
2305         __swab16s(&lum->lcm_flags);
2306         __swab16s(&lum->lcm_entry_count);
2307         __swab16s(&lum->lcm_mirror_count);
2308         CLASSERT(offsetof(typeof(*lum), lcm_padding1) != 0);
2309         CLASSERT(offsetof(typeof(*lum), lcm_padding2) != 0);
2310
2311         for (i = 0; i < ent_count; i++) {
2312                 ent = &lum->lcm_entries[i];
2313                 off = ent->lcme_offset;
2314                 size = ent->lcme_size;
2315
2316                 if (!cpu_endian) {
2317                         __swab32s(&off);
2318                         __swab32s(&size);
2319                 }
2320                 __swab32s(&ent->lcme_id);
2321                 __swab32s(&ent->lcme_flags);
2322                 __swab64s(&ent->lcme_timestamp);
2323                 __swab64s(&ent->lcme_extent.e_start);
2324                 __swab64s(&ent->lcme_extent.e_end);
2325                 __swab32s(&ent->lcme_offset);
2326                 __swab32s(&ent->lcme_size);
2327                 __swab32s(&ent->lcme_layout_gen);
2328                 CLASSERT(offsetof(typeof(*ent), lcme_padding_1) != 0);
2329
2330                 v1 = (struct lov_user_md_v1 *)((char *)lum + off);
2331                 stripe_count = v1->lmm_stripe_count;
2332                 if (!cpu_endian)
2333                         __swab16s(&stripe_count);
2334
2335                 if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1) ||
2336                     v1->lmm_magic == LOV_USER_MAGIC_V1) {
2337                         lustre_swab_lov_user_md_v1(v1);
2338                         if (size > sizeof(*v1))
2339                                 lustre_swab_lov_user_md_objects(v1->lmm_objects,
2340                                                                 stripe_count);
2341                 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3) ||
2342                            v1->lmm_magic == LOV_USER_MAGIC_V3 ||
2343                            v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC) ||
2344                            v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
2345                         v3 = (struct lov_user_md_v3 *)v1;
2346                         lustre_swab_lov_user_md_v3(v3);
2347                         if (size > sizeof(*v3))
2348                                 lustre_swab_lov_user_md_objects(v3->lmm_objects,
2349                                                                 stripe_count);
2350                 } else {
2351                         CERROR("Invalid magic %#x\n", v1->lmm_magic);
2352                 }
2353         }
2354 }
2355 EXPORT_SYMBOL(lustre_swab_lov_comp_md_v1);
2356
2357 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2358 {
2359         ENTRY;
2360         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2361         __swab32s(&lmm->lmm_magic);
2362         __swab32s(&lmm->lmm_pattern);
2363         lustre_swab_lmm_oi(&lmm->lmm_oi);
2364         __swab32s(&lmm->lmm_stripe_size);
2365         __swab16s(&lmm->lmm_stripe_count);
2366         __swab16s(&lmm->lmm_layout_gen);
2367         EXIT;
2368 }
2369 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2370
2371 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2372                                      int stripe_count)
2373 {
2374         int i;
2375         ENTRY;
2376         for (i = 0; i < stripe_count; i++) {
2377                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2378                 __swab32s(&(lod[i].l_ost_gen));
2379                 __swab32s(&(lod[i].l_ost_idx));
2380         }
2381         EXIT;
2382 }
2383 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2384
2385 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2386 {
2387         int  i;
2388
2389         for (i = 0; i < RES_NAME_SIZE; i++)
2390                 __swab64s (&id->name[i]);
2391 }
2392
2393 void lustre_swab_ldlm_policy_data(union ldlm_wire_policy_data *d)
2394 {
2395         /* the lock data is a union and the first two fields are always an
2396          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2397          * data the same way. */
2398         __swab64s(&d->l_extent.start);
2399         __swab64s(&d->l_extent.end);
2400         __swab64s(&d->l_extent.gid);
2401         __swab64s(&d->l_flock.lfw_owner);
2402         __swab32s(&d->l_flock.lfw_pid);
2403 }
2404
2405 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2406 {
2407         __swab64s(&i->opc);
2408 }
2409
2410 void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r)
2411 {
2412         __swab32s(&r->lr_type);
2413         CLASSERT(offsetof(typeof(*r), lr_pad) != 0);
2414         lustre_swab_ldlm_res_id(&r->lr_name);
2415 }
2416
2417 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2418 {
2419         lustre_swab_ldlm_resource_desc (&l->l_resource);
2420         __swab32s (&l->l_req_mode);
2421         __swab32s (&l->l_granted_mode);
2422         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2423 }
2424
2425 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2426 {
2427         __swab32s (&rq->lock_flags);
2428         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2429         __swab32s (&rq->lock_count);
2430         /* lock_handle[] opaque */
2431 }
2432
2433 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2434 {
2435         __swab32s (&r->lock_flags);
2436         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2437         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2438         /* lock_handle opaque */
2439         __swab64s (&r->lock_policy_res1);
2440         __swab64s (&r->lock_policy_res2);
2441 }
2442
2443 void lustre_swab_quota_body(struct quota_body *b)
2444 {
2445         lustre_swab_lu_fid(&b->qb_fid);
2446         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2447         __swab32s(&b->qb_flags);
2448         __swab64s(&b->qb_count);
2449         __swab64s(&b->qb_usage);
2450         __swab64s(&b->qb_slv_ver);
2451 }
2452
2453 /* Dump functions */
2454 void dump_ioo(struct obd_ioobj *ioo)
2455 {
2456         CDEBUG(D_RPCTRACE,
2457                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2458                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2459                ioo->ioo_bufcnt);
2460 }
2461
2462 void dump_rniobuf(struct niobuf_remote *nb)
2463 {
2464         CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n",
2465                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2466 }
2467
2468 void dump_obdo(struct obdo *oa)
2469 {
2470         u64 valid = oa->o_valid;
2471
2472         CDEBUG(D_RPCTRACE, "obdo: o_valid = %#llx\n", valid);
2473         if (valid & OBD_MD_FLID)
2474                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2475         if (valid & OBD_MD_FLFID)
2476                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n",
2477                        oa->o_parent_seq);
2478         if (valid & OBD_MD_FLSIZE)
2479                 CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size);
2480         if (valid & OBD_MD_FLMTIME)
2481                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime);
2482         if (valid & OBD_MD_FLATIME)
2483                 CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime);
2484         if (valid & OBD_MD_FLCTIME)
2485                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime);
2486         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2487                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks);
2488         if (valid & OBD_MD_FLGRANT)
2489                 CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant);
2490         if (valid & OBD_MD_FLBLKSZ)
2491                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2492         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2493                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2494                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2495                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2496         if (valid & OBD_MD_FLUID)
2497                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2498         if (valid & OBD_MD_FLUID)
2499                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2500         if (valid & OBD_MD_FLGID)
2501                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2502         if (valid & OBD_MD_FLGID)
2503                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2504         if (valid & OBD_MD_FLFLAGS)
2505                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2506         if (valid & OBD_MD_FLNLINK)
2507                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2508         else if (valid & OBD_MD_FLCKSUM)
2509                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2510                        oa->o_nlink);
2511         if (valid & OBD_MD_FLPARENT)
2512                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2513                        oa->o_parent_oid);
2514         if (valid & OBD_MD_FLFID) {
2515                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2516                        oa->o_stripe_idx);
2517                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2518                        oa->o_parent_ver);
2519         }
2520         if (valid & OBD_MD_FLHANDLE)
2521                 CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n",
2522                        oa->o_handle.cookie);
2523 }
2524
2525 void dump_ost_body(struct ost_body *ob)
2526 {
2527         dump_obdo(&ob->oa);
2528 }
2529
2530 void dump_rcs(__u32 *rc)
2531 {
2532         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2533 }
2534
2535 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2536 {
2537         LASSERT(req->rq_reqmsg);
2538
2539         switch (req->rq_reqmsg->lm_magic) {
2540         case LUSTRE_MSG_MAGIC_V2:
2541                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2542         default:
2543                 CERROR("bad lustre msg magic: %#08X\n",
2544                        req->rq_reqmsg->lm_magic);
2545         }
2546         return 0;
2547 }
2548
2549 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2550 {
2551         if (unlikely(!req->rq_repmsg))
2552                 return 0;
2553
2554         switch (req->rq_repmsg->lm_magic) {
2555         case LUSTRE_MSG_MAGIC_V2:
2556                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2557         default:
2558                 /* uninitialized yet */
2559                 return 0;
2560         }
2561 }
2562
2563 void _debug_req(struct ptlrpc_request *req,
2564                 struct libcfs_debug_msg_data *msgdata, const char *fmt, ...)
2565 {
2566         bool req_ok = req->rq_reqmsg != NULL;
2567         bool rep_ok = false;
2568         lnet_nid_t nid = LNET_NID_ANY;
2569         va_list args;
2570         int rep_flags = -1;
2571         int rep_status = -1;
2572
2573         spin_lock(&req->rq_early_free_lock);
2574         if (req->rq_repmsg)
2575                 rep_ok = true;
2576
2577         if (ptlrpc_req_need_swab(req)) {
2578                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2579                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2580         }
2581
2582         if (rep_ok) {
2583                 rep_flags = lustre_msg_get_flags(req->rq_repmsg);
2584                 rep_status = lustre_msg_get_status(req->rq_repmsg);
2585         }
2586         spin_unlock(&req->rq_early_free_lock);
2587
2588         if (req->rq_import && req->rq_import->imp_connection)
2589                 nid = req->rq_import->imp_connection->c_peer.nid;
2590         else if (req->rq_export && req->rq_export->exp_connection)
2591                 nid = req->rq_export->exp_connection->c_peer.nid;
2592
2593         va_start(args, fmt);
2594         libcfs_debug_vmsg2(msgdata, fmt, args,
2595                            " req@%p x%llu/t%lld(%lld) o%d->%s@%s:%d/%d lens %d/%d e %d to %lld dl %lld ref %d fl " REQ_FLAGS_FMT "/%x/%x rc %d/%d\n",
2596                            req, req->rq_xid, req->rq_transno,
2597                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2598                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2599                            req->rq_import ?
2600                                 req->rq_import->imp_obd->obd_name :
2601                                 req->rq_export ?
2602                                         req->rq_export->exp_client_uuid.uuid :
2603                                         "<?>",
2604                            libcfs_nid2str(nid),
2605                            req->rq_request_portal, req->rq_reply_portal,
2606                            req->rq_reqlen, req->rq_replen,
2607                            req->rq_early_count, (s64)req->rq_timedout,
2608                            (s64)req->rq_deadline,
2609                            atomic_read(&req->rq_refcount),
2610                            DEBUG_REQ_FLAGS(req),
2611                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2612                            rep_flags, req->rq_status, rep_status);
2613         va_end(args);
2614 }
2615 EXPORT_SYMBOL(_debug_req);
2616
2617 void lustre_swab_lustre_capa(struct lustre_capa *c)
2618 {
2619         lustre_swab_lu_fid(&c->lc_fid);
2620         __swab64s (&c->lc_opc);
2621         __swab64s (&c->lc_uid);
2622         __swab64s (&c->lc_gid);
2623         __swab32s (&c->lc_flags);
2624         __swab32s (&c->lc_keyid);
2625         __swab32s (&c->lc_timeout);
2626         __swab32s (&c->lc_expiry);
2627 }
2628
2629 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2630 {
2631         __swab64s (&k->lk_seq);
2632         __swab32s (&k->lk_keyid);
2633         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2634 }
2635
2636 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2637 {
2638         __swab32s(&state->hus_states);
2639         __swab32s(&state->hus_archive_id);
2640 }
2641
2642 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2643 {
2644         __swab32s(&hss->hss_valid);
2645         __swab64s(&hss->hss_setmask);
2646         __swab64s(&hss->hss_clearmask);
2647         __swab32s(&hss->hss_archive_id);
2648 }
2649
2650 static void lustre_swab_hsm_extent(struct hsm_extent *extent)
2651 {
2652         __swab64s(&extent->offset);
2653         __swab64s(&extent->length);
2654 }
2655
2656 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2657 {
2658         __swab32s(&action->hca_state);
2659         __swab32s(&action->hca_action);
2660         lustre_swab_hsm_extent(&action->hca_location);
2661 }
2662
2663 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2664 {
2665         lustre_swab_lu_fid(&hui->hui_fid);
2666         lustre_swab_hsm_extent(&hui->hui_extent);
2667 }
2668
2669 void lustre_swab_lu_extent(struct lu_extent *le)
2670 {
2671         __swab64s(&le->e_start);
2672         __swab64s(&le->e_end);
2673 }
2674
2675 void lustre_swab_layout_intent(struct layout_intent *li)
2676 {
2677         __swab32s(&li->li_opc);
2678         __swab32s(&li->li_flags);
2679         lustre_swab_lu_extent(&li->li_extent);
2680 }
2681
2682 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2683 {
2684         lustre_swab_lu_fid(&hpk->hpk_fid);
2685         __swab64s(&hpk->hpk_cookie);
2686         __swab64s(&hpk->hpk_extent.offset);
2687         __swab64s(&hpk->hpk_extent.length);
2688         __swab16s(&hpk->hpk_flags);
2689         __swab16s(&hpk->hpk_errval);
2690 }
2691
2692 void lustre_swab_hsm_request(struct hsm_request *hr)
2693 {
2694         __swab32s(&hr->hr_action);
2695         __swab32s(&hr->hr_archive_id);
2696         __swab64s(&hr->hr_flags);
2697         __swab32s(&hr->hr_itemcount);
2698         __swab32s(&hr->hr_data_len);
2699 }
2700
2701 void lustre_swab_object_update(struct object_update *ou)
2702 {
2703         struct object_update_param *param;
2704         size_t  i;
2705
2706         __swab16s(&ou->ou_type);
2707         __swab16s(&ou->ou_params_count);
2708         __swab32s(&ou->ou_result_size);
2709         __swab32s(&ou->ou_flags);
2710         __swab32s(&ou->ou_padding1);
2711         __swab64s(&ou->ou_batchid);
2712         lustre_swab_lu_fid(&ou->ou_fid);
2713         param = &ou->ou_params[0];
2714         for (i = 0; i < ou->ou_params_count; i++) {
2715                 __swab16s(&param->oup_len);
2716                 __swab16s(&param->oup_padding);
2717                 __swab32s(&param->oup_padding2);
2718                 param = (struct object_update_param *)((char *)param +
2719                          object_update_param_size(param));
2720         }
2721 }
2722
2723 void lustre_swab_object_update_request(struct object_update_request *our)
2724 {
2725         size_t i;
2726         __swab32s(&our->ourq_magic);
2727         __swab16s(&our->ourq_count);
2728         __swab16s(&our->ourq_padding);
2729         for (i = 0; i < our->ourq_count; i++) {
2730                 struct object_update *ou;
2731
2732                 ou = object_update_request_get(our, i, NULL);
2733                 if (ou == NULL)
2734                         return;
2735                 lustre_swab_object_update(ou);
2736         }
2737 }
2738
2739 void lustre_swab_object_update_result(struct object_update_result *our)
2740 {
2741         __swab32s(&our->our_rc);
2742         __swab16s(&our->our_datalen);
2743         __swab16s(&our->our_padding);
2744 }
2745
2746 void lustre_swab_object_update_reply(struct object_update_reply *our)
2747 {
2748         size_t i;
2749
2750         __swab32s(&our->ourp_magic);
2751         __swab16s(&our->ourp_count);
2752         __swab16s(&our->ourp_padding);
2753         for (i = 0; i < our->ourp_count; i++) {
2754                 struct object_update_result *ourp;
2755
2756                 __swab16s(&our->ourp_lens[i]);
2757                 ourp = object_update_result_get(our, i, NULL);
2758                 if (ourp == NULL)
2759                         return;
2760                 lustre_swab_object_update_result(ourp);
2761         }
2762 }
2763
2764 void lustre_swab_out_update_header(struct out_update_header *ouh)
2765 {
2766         __swab32s(&ouh->ouh_magic);
2767         __swab32s(&ouh->ouh_count);
2768         __swab32s(&ouh->ouh_inline_length);
2769         __swab32s(&ouh->ouh_reply_size);
2770 }
2771 EXPORT_SYMBOL(lustre_swab_out_update_header);
2772
2773 void lustre_swab_out_update_buffer(struct out_update_buffer *oub)
2774 {
2775         __swab32s(&oub->oub_size);
2776         __swab32s(&oub->oub_padding);
2777 }
2778 EXPORT_SYMBOL(lustre_swab_out_update_buffer);
2779
2780 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2781 {
2782         __swab64s(&msl->msl_flags);
2783 }
2784
2785 void lustre_swab_close_data(struct close_data *cd)
2786 {
2787         lustre_swab_lu_fid(&cd->cd_fid);
2788         __swab64s(&cd->cd_data_version);
2789 }
2790
2791 void lustre_swab_close_data_resync_done(struct close_data_resync_done *resync)
2792 {
2793         int i;
2794
2795         __swab32s(&resync->resync_count);
2796         /* after swab, resync_count must in CPU endian */
2797         if (resync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
2798                 for (i = 0; i < resync->resync_count; i++)
2799                         __swab32s(&resync->resync_ids_inline[i]);
2800         }
2801 }
2802 EXPORT_SYMBOL(lustre_swab_close_data_resync_done);
2803
2804 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2805 {
2806         __swab32s(&lr->lr_event);
2807         __swab32s(&lr->lr_index);
2808         __swab32s(&lr->lr_flags);
2809         __swab32s(&lr->lr_valid);
2810         __swab32s(&lr->lr_speed);
2811         __swab16s(&lr->lr_version);
2812         __swab16s(&lr->lr_active);
2813         __swab16s(&lr->lr_param);
2814         __swab16s(&lr->lr_async_windows);
2815         __swab32s(&lr->lr_flags);
2816         lustre_swab_lu_fid(&lr->lr_fid);
2817         lustre_swab_lu_fid(&lr->lr_fid2);
2818         __swab32s(&lr->lr_comp_id);
2819         CLASSERT(offsetof(typeof(*lr), lr_padding_0) != 0);
2820         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2821         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2822         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2823 }
2824
2825 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2826 {
2827         __swab32s(&lr->lr_status);
2828         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2829         __swab64s(&lr->lr_repaired);
2830 }
2831
2832 static void lustre_swab_orphan_rec(struct lu_orphan_rec *rec)
2833 {
2834         lustre_swab_lu_fid(&rec->lor_fid);
2835         __swab32s(&rec->lor_uid);
2836         __swab32s(&rec->lor_gid);
2837 }
2838
2839 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2840 {
2841         lustre_swab_lu_fid(&ent->loe_key);
2842         lustre_swab_orphan_rec(&ent->loe_rec);
2843 }
2844 EXPORT_SYMBOL(lustre_swab_orphan_ent);
2845
2846 void lustre_swab_orphan_ent_v2(struct lu_orphan_ent_v2 *ent)
2847 {
2848         lustre_swab_lu_fid(&ent->loe_key);
2849         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2850         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2851         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding) != 0);
2852 }
2853 EXPORT_SYMBOL(lustre_swab_orphan_ent_v2);
2854
2855 void lustre_swab_orphan_ent_v3(struct lu_orphan_ent_v3 *ent)
2856 {
2857         lustre_swab_lu_fid(&ent->loe_key);
2858         lustre_swab_orphan_rec(&ent->loe_rec.lor_rec);
2859         lustre_swab_ost_layout(&ent->loe_rec.lor_layout);
2860         __swab32s(&ent->loe_rec.lor_layout_version);
2861         __swab32s(&ent->loe_rec.lor_range);
2862         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding_1) != 0);
2863         CLASSERT(offsetof(typeof(ent->loe_rec), lor_padding_2) != 0);
2864 }
2865 EXPORT_SYMBOL(lustre_swab_orphan_ent_v3);
2866
2867 void lustre_swab_ladvise(struct lu_ladvise *ladvise)
2868 {
2869         __swab16s(&ladvise->lla_advice);
2870         __swab16s(&ladvise->lla_value1);
2871         __swab32s(&ladvise->lla_value2);
2872         __swab64s(&ladvise->lla_start);
2873         __swab64s(&ladvise->lla_end);
2874         __swab32s(&ladvise->lla_value3);
2875         __swab32s(&ladvise->lla_value4);
2876 }
2877 EXPORT_SYMBOL(lustre_swab_ladvise);
2878
2879 void lustre_swab_ladvise_hdr(struct ladvise_hdr *ladvise_hdr)
2880 {
2881         __swab32s(&ladvise_hdr->lah_magic);
2882         __swab32s(&ladvise_hdr->lah_count);
2883         __swab64s(&ladvise_hdr->lah_flags);
2884         __swab32s(&ladvise_hdr->lah_value1);
2885         __swab32s(&ladvise_hdr->lah_value2);
2886         __swab64s(&ladvise_hdr->lah_value3);
2887 }
2888 EXPORT_SYMBOL(lustre_swab_ladvise_hdr);