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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.sun.com/software/products/lustre/docs/GPLv2.pdf
19  *
20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21  * CA 95054 USA or visit www.sun.com if you need additional information or
22  * have any questions.
23  *
24  * GPL HEADER END
25  */
26 /*
27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28  * Use is subject to license terms.
29  *
30  * Copyright (c) 2011, 2012, Intel Corporation.
31  */
32 /*
33  * This file is part of Lustre, http://www.lustre.org/
34  * Lustre is a trademark of Sun Microsystems, Inc.
35  *
36  * lustre/ptlrpc/pack_generic.c
37  *
38  * (Un)packing of OST requests
39  *
40  * Author: Peter J. Braam <braam@clusterfs.com>
41  * Author: Phil Schwan <phil@clusterfs.com>
42  * Author: Eric Barton <eeb@clusterfs.com>
43  */
44
45 #define DEBUG_SUBSYSTEM S_RPC
46 #ifndef __KERNEL__
47 # include <liblustre.h>
48 #endif
49
50 #include <libcfs/libcfs.h>
51
52 #include <obd_support.h>
53 #include <obd_class.h>
54 #include <lustre_net.h>
55 #include <obd_cksum.h>
56 #include <lustre/ll_fiemap.h>
57
58 static inline int lustre_msg_hdr_size_v2(int count)
59 {
60         return cfs_size_round(offsetof(struct lustre_msg_v2,
61                                        lm_buflens[count]));
62 }
63
64 int lustre_msg_hdr_size(__u32 magic, int count)
65 {
66         switch (magic) {
67         case LUSTRE_MSG_MAGIC_V2:
68                 return lustre_msg_hdr_size_v2(count);
69         default:
70                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
71                 return -EINVAL;
72         }
73 }
74 EXPORT_SYMBOL(lustre_msg_hdr_size);
75
76 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
77                             int index)
78 {
79         if (inout)
80                 lustre_set_req_swabbed(req, index);
81         else
82                 lustre_set_rep_swabbed(req, index);
83 }
84 EXPORT_SYMBOL(ptlrpc_buf_set_swabbed);
85
86 int ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
87                          int index)
88 {
89         if (inout)
90                 return (ptlrpc_req_need_swab(req) &&
91                         !lustre_req_swabbed(req, index));
92         else
93                 return (ptlrpc_rep_need_swab(req) &&
94                         !lustre_rep_swabbed(req, index));
95 }
96 EXPORT_SYMBOL(ptlrpc_buf_need_swab);
97
98 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
99                                               __u32 version)
100 {
101         __u32 ver = lustre_msg_get_version(msg);
102         return (ver & LUSTRE_VERSION_MASK) != version;
103 }
104
105 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version)
106 {
107         switch (msg->lm_magic) {
108         case LUSTRE_MSG_MAGIC_V1:
109                 CERROR("msg v1 not supported - please upgrade you system\n");
110                 return -EINVAL;
111         case LUSTRE_MSG_MAGIC_V2:
112                 return lustre_msg_check_version_v2(msg, version);
113         default:
114                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
115                 return 0;
116         }
117 }
118 EXPORT_SYMBOL(lustre_msg_check_version);
119
120 /* early reply size */
121 int lustre_msg_early_size()
122 {
123         static int size = 0;
124         if (!size) {
125                 /* Always reply old ptlrpc_body_v2 to keep interoprability
126                  * with the old client (< 2.3) which doesn't have pb_jobid
127                  * in the ptlrpc_body.
128                  *
129                  * XXX Remove this whenever we dorp interoprability with such
130                  *     client.
131                  */
132                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
133                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
134         }
135         return size;
136 }
137 EXPORT_SYMBOL(lustre_msg_early_size);
138
139 int lustre_msg_size_v2(int count, __u32 *lengths)
140 {
141         int size;
142         int i;
143
144         size = lustre_msg_hdr_size_v2(count);
145         for (i = 0; i < count; i++)
146                 size += cfs_size_round(lengths[i]);
147
148         return size;
149 }
150 EXPORT_SYMBOL(lustre_msg_size_v2);
151
152 /* This returns the size of the buffer that is required to hold a lustre_msg
153  * with the given sub-buffer lengths.
154  * NOTE: this should only be used for NEW requests, and should always be
155  *       in the form of a v2 request.  If this is a connection to a v1
156  *       target then the first buffer will be stripped because the ptlrpc
157  *       data is part of the lustre_msg_v1 header. b=14043 */
158 int lustre_msg_size(__u32 magic, int count, __u32 *lens)
159 {
160         __u32 size[] = { sizeof(struct ptlrpc_body) };
161
162         if (!lens) {
163                 LASSERT(count == 1);
164                 lens = size;
165         }
166
167         LASSERT(count > 0);
168         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
169
170         switch (magic) {
171         case LUSTRE_MSG_MAGIC_V2:
172                 return lustre_msg_size_v2(count, lens);
173         default:
174                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
175                 return -EINVAL;
176         }
177 }
178 EXPORT_SYMBOL(lustre_msg_size);
179
180 /* This is used to determine the size of a buffer that was already packed
181  * and will correctly handle the different message formats. */
182 int lustre_packed_msg_size(struct lustre_msg *msg)
183 {
184         switch (msg->lm_magic) {
185         case LUSTRE_MSG_MAGIC_V2:
186                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
187         default:
188                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
189                 return 0;
190         }
191 }
192 EXPORT_SYMBOL(lustre_packed_msg_size);
193
194 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
195                         char **bufs)
196 {
197         char *ptr;
198         int i;
199
200         msg->lm_bufcount = count;
201         /* XXX: lm_secflvr uninitialized here */
202         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
203
204         for (i = 0; i < count; i++)
205                 msg->lm_buflens[i] = lens[i];
206
207         if (bufs == NULL)
208                 return;
209
210         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
211         for (i = 0; i < count; i++) {
212                 char *tmp = bufs[i];
213                 LOGL(tmp, lens[i], ptr);
214         }
215 }
216 EXPORT_SYMBOL(lustre_init_msg_v2);
217
218 static int lustre_pack_request_v2(struct ptlrpc_request *req,
219                                   int count, __u32 *lens, char **bufs)
220 {
221         int reqlen, rc;
222
223         reqlen = lustre_msg_size_v2(count, lens);
224
225         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
226         if (rc)
227                 return rc;
228
229         req->rq_reqlen = reqlen;
230
231         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
232         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
233         return 0;
234 }
235
236 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
237                         __u32 *lens, char **bufs)
238 {
239         __u32 size[] = { sizeof(struct ptlrpc_body) };
240
241         if (!lens) {
242                 LASSERT(count == 1);
243                 lens = size;
244         }
245
246         LASSERT(count > 0);
247         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
248
249         /* only use new format, we don't need to be compatible with 1.4 */
250         magic = LUSTRE_MSG_MAGIC_V2;
251
252         switch (magic) {
253         case LUSTRE_MSG_MAGIC_V2:
254                 return lustre_pack_request_v2(req, count, lens, bufs);
255         default:
256                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
257                 return -EINVAL;
258         }
259 }
260 EXPORT_SYMBOL(lustre_pack_request);
261
262 #if RS_DEBUG
263 CFS_LIST_HEAD(ptlrpc_rs_debug_lru);
264 spinlock_t ptlrpc_rs_debug_lock;
265
266 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
267 do {                                                                    \
268         spin_lock(&ptlrpc_rs_debug_lock);                               \
269         cfs_list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);  \
270         spin_unlock(&ptlrpc_rs_debug_lock);                             \
271 } while (0)
272
273 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
274 do {                                                                    \
275         spin_lock(&ptlrpc_rs_debug_lock);                               \
276         cfs_list_del(&(rs)->rs_debug_list);                             \
277         spin_unlock(&ptlrpc_rs_debug_lock);                             \
278 } while (0)
279 #else
280 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
281 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
282 #endif
283
284 struct ptlrpc_reply_state *
285 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
286 {
287         struct ptlrpc_reply_state *rs = NULL;
288
289         spin_lock(&svcpt->scp_rep_lock);
290
291         /* See if we have anything in a pool, and wait if nothing */
292         while (cfs_list_empty(&svcpt->scp_rep_idle)) {
293                 struct l_wait_info      lwi;
294                 int                     rc;
295
296                 spin_unlock(&svcpt->scp_rep_lock);
297                 /* If we cannot get anything for some long time, we better
298                  * bail out instead of waiting infinitely */
299                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
300                 rc = l_wait_event(svcpt->scp_rep_waitq,
301                                   !cfs_list_empty(&svcpt->scp_rep_idle), &lwi);
302                 if (rc != 0)
303                         goto out;
304                 spin_lock(&svcpt->scp_rep_lock);
305         }
306
307         rs = cfs_list_entry(svcpt->scp_rep_idle.next,
308                             struct ptlrpc_reply_state, rs_list);
309         cfs_list_del(&rs->rs_list);
310
311         spin_unlock(&svcpt->scp_rep_lock);
312
313         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
314         rs->rs_svcpt = svcpt;
315         rs->rs_prealloc = 1;
316 out:
317         return rs;
318 }
319
320 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
321 {
322         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
323
324         spin_lock(&svcpt->scp_rep_lock);
325         cfs_list_add(&rs->rs_list, &svcpt->scp_rep_idle);
326         spin_unlock(&svcpt->scp_rep_lock);
327         cfs_waitq_signal(&svcpt->scp_rep_waitq);
328 }
329
330 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
331                          __u32 *lens, char **bufs, int flags)
332 {
333         struct ptlrpc_reply_state *rs;
334         int                        msg_len, rc;
335         ENTRY;
336
337         LASSERT(req->rq_reply_state == NULL);
338
339         if ((flags & LPRFL_EARLY_REPLY) == 0) {
340                 spin_lock(&req->rq_lock);
341                 req->rq_packed_final = 1;
342                 spin_unlock(&req->rq_lock);
343         }
344
345         msg_len = lustre_msg_size_v2(count, lens);
346         rc = sptlrpc_svc_alloc_rs(req, msg_len);
347         if (rc)
348                 RETURN(rc);
349
350         rs = req->rq_reply_state;
351         cfs_atomic_set(&rs->rs_refcount, 1);    /* 1 ref for rq_reply_state */
352         rs->rs_cb_id.cbid_fn = reply_out_callback;
353         rs->rs_cb_id.cbid_arg = rs;
354         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
355         CFS_INIT_LIST_HEAD(&rs->rs_exp_list);
356         CFS_INIT_LIST_HEAD(&rs->rs_obd_list);
357         CFS_INIT_LIST_HEAD(&rs->rs_list);
358         spin_lock_init(&rs->rs_lock);
359
360         req->rq_replen = msg_len;
361         req->rq_reply_state = rs;
362         req->rq_repmsg = rs->rs_msg;
363
364         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
365         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
366
367         PTLRPC_RS_DEBUG_LRU_ADD(rs);
368
369         RETURN(0);
370 }
371 EXPORT_SYMBOL(lustre_pack_reply_v2);
372
373 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
374                             char **bufs, int flags)
375 {
376         int rc = 0;
377         __u32 size[] = { sizeof(struct ptlrpc_body) };
378
379         if (!lens) {
380                 LASSERT(count == 1);
381                 lens = size;
382         }
383
384         LASSERT(count > 0);
385         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
386
387         switch (req->rq_reqmsg->lm_magic) {
388         case LUSTRE_MSG_MAGIC_V2:
389                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
390                 break;
391         default:
392                 LASSERTF(0, "incorrect message magic: %08x\n",
393                          req->rq_reqmsg->lm_magic);
394                 rc = -EINVAL;
395         }
396         if (rc != 0)
397                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
398                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
399         return rc;
400 }
401 EXPORT_SYMBOL(lustre_pack_reply_flags);
402
403 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
404                       char **bufs)
405 {
406         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
407 }
408 EXPORT_SYMBOL(lustre_pack_reply);
409
410 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, int n, int min_size)
411 {
412         int i, offset, buflen, bufcount;
413
414         LASSERT(m != NULL);
415         LASSERT(n >= 0);
416
417         bufcount = m->lm_bufcount;
418         if (unlikely(n >= bufcount)) {
419                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
420                        m, n, bufcount);
421                 return NULL;
422         }
423
424         buflen = m->lm_buflens[n];
425         if (unlikely(buflen < min_size)) {
426                 CERROR("msg %p buffer[%d] size %d too small "
427                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
428                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
429                 return NULL;
430         }
431
432         offset = lustre_msg_hdr_size_v2(bufcount);
433         for (i = 0; i < n; i++)
434                 offset += cfs_size_round(m->lm_buflens[i]);
435
436         return (char *)m + offset;
437 }
438
439 void *lustre_msg_buf(struct lustre_msg *m, int n, int min_size)
440 {
441         switch (m->lm_magic) {
442         case LUSTRE_MSG_MAGIC_V2:
443                 return lustre_msg_buf_v2(m, n, min_size);
444         default:
445                 LASSERTF(0, "incorrect message magic: %08x(msg:%p)\n", m->lm_magic, m);
446                 return NULL;
447         }
448 }
449 EXPORT_SYMBOL(lustre_msg_buf);
450
451 int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, int segment,
452                          unsigned int newlen, int move_data)
453 {
454         char   *tail = NULL, *newpos;
455         int     tail_len = 0, n;
456
457         LASSERT(msg);
458         LASSERT(msg->lm_bufcount > segment);
459         LASSERT(msg->lm_buflens[segment] >= newlen);
460
461         if (msg->lm_buflens[segment] == newlen)
462                 goto out;
463
464         if (move_data && msg->lm_bufcount > segment + 1) {
465                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
466                 for (n = segment + 1; n < msg->lm_bufcount; n++)
467                         tail_len += cfs_size_round(msg->lm_buflens[n]);
468         }
469
470         msg->lm_buflens[segment] = newlen;
471
472         if (tail && tail_len) {
473                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
474                 LASSERT(newpos <= tail);
475                 if (newpos != tail)
476                         memmove(newpos, tail, tail_len);
477         }
478 out:
479         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
480 }
481
482 /*
483  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
484  * we also move data forward from @segment + 1.
485  *
486  * if @newlen == 0, we remove the segment completely, but we still keep the
487  * totally bufcount the same to save possible data moving. this will leave a
488  * unused segment with size 0 at the tail, but that's ok.
489  *
490  * return new msg size after shrinking.
491  *
492  * CAUTION:
493  * + if any buffers higher than @segment has been filled in, must call shrink
494  *   with non-zero @move_data.
495  * + caller should NOT keep pointers to msg buffers which higher than @segment
496  *   after call shrink.
497  */
498 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
499                       unsigned int newlen, int move_data)
500 {
501         switch (msg->lm_magic) {
502         case LUSTRE_MSG_MAGIC_V2:
503                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
504         default:
505                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
506         }
507 }
508 EXPORT_SYMBOL(lustre_shrink_msg);
509
510 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
511 {
512         PTLRPC_RS_DEBUG_LRU_DEL(rs);
513
514         LASSERT (cfs_atomic_read(&rs->rs_refcount) == 0);
515         LASSERT (!rs->rs_difficult || rs->rs_handled);
516         LASSERT (!rs->rs_on_net);
517         LASSERT (!rs->rs_scheduled);
518         LASSERT (rs->rs_export == NULL);
519         LASSERT (rs->rs_nlocks == 0);
520         LASSERT (cfs_list_empty(&rs->rs_exp_list));
521         LASSERT (cfs_list_empty(&rs->rs_obd_list));
522
523         sptlrpc_svc_free_rs(rs);
524 }
525 EXPORT_SYMBOL(lustre_free_reply_state);
526
527 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
528 {
529         int swabbed, required_len, i;
530
531         /* Now we know the sender speaks my language. */
532         required_len = lustre_msg_hdr_size_v2(0);
533         if (len < required_len) {
534                 /* can't even look inside the message */
535                 CERROR("message length %d too small for lustre_msg\n", len);
536                 return -EINVAL;
537         }
538
539         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
540
541         if (swabbed) {
542                 __swab32s(&m->lm_magic);
543                 __swab32s(&m->lm_bufcount);
544                 __swab32s(&m->lm_secflvr);
545                 __swab32s(&m->lm_repsize);
546                 __swab32s(&m->lm_cksum);
547                 __swab32s(&m->lm_flags);
548                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
549                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
550         }
551
552         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
553         if (len < required_len) {
554                 /* didn't receive all the buffer lengths */
555                 CERROR ("message length %d too small for %d buflens\n",
556                         len, m->lm_bufcount);
557                 return -EINVAL;
558         }
559
560         for (i = 0; i < m->lm_bufcount; i++) {
561                 if (swabbed)
562                         __swab32s(&m->lm_buflens[i]);
563                 required_len += cfs_size_round(m->lm_buflens[i]);
564         }
565
566         if (len < required_len) {
567                 CERROR("len: %d, required_len %d\n", len, required_len);
568                 CERROR("bufcount: %d\n", m->lm_bufcount);
569                 for (i = 0; i < m->lm_bufcount; i++)
570                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
571                 return -EINVAL;
572         }
573
574         return swabbed;
575 }
576
577 int __lustre_unpack_msg(struct lustre_msg *m, int len)
578 {
579         int required_len, rc;
580         ENTRY;
581
582         /* We can provide a slightly better error log, if we check the
583          * message magic and version first.  In the future, struct
584          * lustre_msg may grow, and we'd like to log a version mismatch,
585          * rather than a short message.
586          *
587          */
588         required_len = offsetof(struct lustre_msg, lm_magic) +
589                        sizeof(m->lm_magic);
590         if (len < required_len) {
591                 /* can't even look inside the message */
592                 CERROR("message length %d too small for magic/version check\n",
593                        len);
594                 RETURN(-EINVAL);
595         }
596
597         rc = lustre_unpack_msg_v2(m, len);
598
599         RETURN(rc);
600 }
601 EXPORT_SYMBOL(__lustre_unpack_msg);
602
603 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
604 {
605         int rc;
606         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
607         if (rc == 1) {
608                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
609                 rc = 0;
610         }
611         return rc;
612 }
613 EXPORT_SYMBOL(ptlrpc_unpack_req_msg);
614
615 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
616 {
617         int rc;
618         rc = __lustre_unpack_msg(req->rq_repmsg, len);
619         if (rc == 1) {
620                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
621                 rc = 0;
622         }
623         return rc;
624 }
625 EXPORT_SYMBOL(ptlrpc_unpack_rep_msg);
626
627 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
628                                                const int inout, int offset)
629 {
630         struct ptlrpc_body *pb;
631         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
632
633         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
634         if (!pb) {
635                 CERROR("error unpacking ptlrpc body\n");
636                 return -EFAULT;
637         }
638         if (ptlrpc_buf_need_swab(req, inout, offset)) {
639                 lustre_swab_ptlrpc_body(pb);
640                 ptlrpc_buf_set_swabbed(req, inout, offset);
641         }
642
643         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
644                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
645                  return -EINVAL;
646         }
647
648         return 0;
649 }
650
651 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
652 {
653         switch (req->rq_reqmsg->lm_magic) {
654         case LUSTRE_MSG_MAGIC_V2:
655                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
656         default:
657                 CERROR("bad lustre msg magic: %08x\n",
658                        req->rq_reqmsg->lm_magic);
659                 return -EINVAL;
660         }
661 }
662
663 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
664 {
665         switch (req->rq_repmsg->lm_magic) {
666         case LUSTRE_MSG_MAGIC_V2:
667                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
668         default:
669                 CERROR("bad lustre msg magic: %08x\n",
670                        req->rq_repmsg->lm_magic);
671                 return -EINVAL;
672         }
673 }
674
675 static inline int lustre_msg_buflen_v2(struct lustre_msg_v2 *m, int n)
676 {
677         if (n >= m->lm_bufcount)
678                 return 0;
679
680         return m->lm_buflens[n];
681 }
682
683 /**
684  * lustre_msg_buflen - return the length of buffer \a n in message \a m
685  * \param m lustre_msg (request or reply) to look at
686  * \param n message index (base 0)
687  *
688  * returns zero for non-existent message indices
689  */
690 int lustre_msg_buflen(struct lustre_msg *m, int n)
691 {
692         switch (m->lm_magic) {
693         case LUSTRE_MSG_MAGIC_V2:
694                 return lustre_msg_buflen_v2(m, n);
695         default:
696                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
697                 return -EINVAL;
698         }
699 }
700 EXPORT_SYMBOL(lustre_msg_buflen);
701
702 static inline void
703 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, int n, int len)
704 {
705         if (n >= m->lm_bufcount)
706                 LBUG();
707
708         m->lm_buflens[n] = len;
709 }
710
711 void lustre_msg_set_buflen(struct lustre_msg *m, int n, int len)
712 {
713         switch (m->lm_magic) {
714         case LUSTRE_MSG_MAGIC_V2:
715                 lustre_msg_set_buflen_v2(m, n, len);
716                 return;
717         default:
718                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
719         }
720 }
721
722 EXPORT_SYMBOL(lustre_msg_set_buflen);
723
724 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
725  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
726 int lustre_msg_bufcount(struct lustre_msg *m)
727 {
728         switch (m->lm_magic) {
729         case LUSTRE_MSG_MAGIC_V2:
730                 return m->lm_bufcount;
731         default:
732                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
733                 return -EINVAL;
734         }
735 }
736 EXPORT_SYMBOL(lustre_msg_bufcount);
737
738 char *lustre_msg_string(struct lustre_msg *m, int index, int max_len)
739 {
740         /* max_len == 0 means the string should fill the buffer */
741         char *str;
742         int slen, blen;
743
744         switch (m->lm_magic) {
745         case LUSTRE_MSG_MAGIC_V2:
746                 str = lustre_msg_buf_v2(m, index, 0);
747                 blen = lustre_msg_buflen_v2(m, index);
748                 break;
749         default:
750                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
751         }
752
753         if (str == NULL) {
754                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
755                 return NULL;
756         }
757
758         slen = strnlen(str, blen);
759
760         if (slen == blen) {                     /* not NULL terminated */
761                 CERROR("can't unpack non-NULL terminated string in "
762                         "msg %p buffer[%d] len %d\n", m, index, blen);
763                 return NULL;
764         }
765
766         if (max_len == 0) {
767                 if (slen != blen - 1) {
768                         CERROR("can't unpack short string in msg %p "
769                                "buffer[%d] len %d: strlen %d\n",
770                                m, index, blen, slen);
771                         return NULL;
772                 }
773         } else if (slen > max_len) {
774                 CERROR("can't unpack oversized string in msg %p "
775                        "buffer[%d] len %d strlen %d: max %d expected\n",
776                        m, index, blen, slen, max_len);
777                 return NULL;
778         }
779
780         return str;
781 }
782 EXPORT_SYMBOL(lustre_msg_string);
783
784 /* Wrap up the normal fixed length cases */
785 static inline void *__lustre_swab_buf(struct lustre_msg *msg, int index,
786                                       int min_size, void *swabber)
787 {
788         void *ptr = NULL;
789
790         LASSERT(msg != NULL);
791         switch (msg->lm_magic) {
792         case LUSTRE_MSG_MAGIC_V2:
793                 ptr = lustre_msg_buf_v2(msg, index, min_size);
794                 break;
795         default:
796                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
797         }
798
799         if (ptr && swabber)
800                 ((void (*)(void *))swabber)(ptr);
801
802         return ptr;
803 }
804
805 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
806 {
807         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
808                                  sizeof(struct ptlrpc_body_v2));
809 }
810
811 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
812 {
813         switch (msg->lm_magic) {
814         case LUSTRE_MSG_MAGIC_V1:
815         case LUSTRE_MSG_MAGIC_V1_SWABBED:
816                 return 0;
817         case LUSTRE_MSG_MAGIC_V2:
818                 /* already in host endian */
819                 return msg->lm_flags;
820         default:
821                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
822                 return 0;
823         }
824 }
825 EXPORT_SYMBOL(lustre_msghdr_get_flags);
826
827 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
828 {
829         switch (msg->lm_magic) {
830         case LUSTRE_MSG_MAGIC_V1:
831                 return;
832         case LUSTRE_MSG_MAGIC_V2:
833                 msg->lm_flags = flags;
834                 return;
835         default:
836                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
837         }
838 }
839
840 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
841 {
842         switch (msg->lm_magic) {
843         case LUSTRE_MSG_MAGIC_V2: {
844                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
845                 if (!pb) {
846                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
847                         return 0;
848                 }
849                 return pb->pb_flags;
850         }
851         default:
852                 /* flags might be printed in debug code while message
853                  * uninitialized */
854                 return 0;
855         }
856 }
857 EXPORT_SYMBOL(lustre_msg_get_flags);
858
859 void lustre_msg_add_flags(struct lustre_msg *msg, int flags)
860 {
861         switch (msg->lm_magic) {
862         case LUSTRE_MSG_MAGIC_V2: {
863                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
864                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
865                 pb->pb_flags |= flags;
866                 return;
867         }
868         default:
869                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
870         }
871 }
872 EXPORT_SYMBOL(lustre_msg_add_flags);
873
874 void lustre_msg_set_flags(struct lustre_msg *msg, int flags)
875 {
876         switch (msg->lm_magic) {
877         case LUSTRE_MSG_MAGIC_V2: {
878                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
879                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
880                 pb->pb_flags = flags;
881                 return;
882         }
883         default:
884                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
885         }
886 }
887 EXPORT_SYMBOL(lustre_msg_set_flags);
888
889 void lustre_msg_clear_flags(struct lustre_msg *msg, int flags)
890 {
891         switch (msg->lm_magic) {
892         case LUSTRE_MSG_MAGIC_V2: {
893                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
894                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
895                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
896                 return;
897         }
898         default:
899                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
900         }
901 }
902 EXPORT_SYMBOL(lustre_msg_clear_flags);
903
904 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
905 {
906         switch (msg->lm_magic) {
907         case LUSTRE_MSG_MAGIC_V2: {
908                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
909                 if (!pb) {
910                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
911                         return 0;
912                 }
913                 return pb->pb_op_flags;
914         }
915         default:
916                 return 0;
917         }
918 }
919 EXPORT_SYMBOL(lustre_msg_get_op_flags);
920
921 void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags)
922 {
923         switch (msg->lm_magic) {
924         case LUSTRE_MSG_MAGIC_V2: {
925                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
926                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
927                 pb->pb_op_flags |= flags;
928                 return;
929         }
930         default:
931                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
932         }
933 }
934 EXPORT_SYMBOL(lustre_msg_add_op_flags);
935
936 void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags)
937 {
938         switch (msg->lm_magic) {
939         case LUSTRE_MSG_MAGIC_V2: {
940                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
941                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
942                 pb->pb_op_flags |= flags;
943                 return;
944         }
945         default:
946                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
947         }
948 }
949 EXPORT_SYMBOL(lustre_msg_set_op_flags);
950
951 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
952 {
953         switch (msg->lm_magic) {
954         case LUSTRE_MSG_MAGIC_V2: {
955                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
956                 if (!pb) {
957                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
958                         return NULL;
959                 }
960                 return &pb->pb_handle;
961         }
962         default:
963                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
964                 return NULL;
965         }
966 }
967 EXPORT_SYMBOL(lustre_msg_get_handle);
968
969 __u32 lustre_msg_get_type(struct lustre_msg *msg)
970 {
971         switch (msg->lm_magic) {
972         case LUSTRE_MSG_MAGIC_V2: {
973                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
974                 if (!pb) {
975                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
976                         return PTL_RPC_MSG_ERR;
977                 }
978                 return pb->pb_type;
979         }
980         default:
981                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
982                 return PTL_RPC_MSG_ERR;
983         }
984 }
985 EXPORT_SYMBOL(lustre_msg_get_type);
986
987 __u32 lustre_msg_get_version(struct lustre_msg *msg)
988 {
989         switch (msg->lm_magic) {
990         case LUSTRE_MSG_MAGIC_V2: {
991                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
992                 if (!pb) {
993                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
994                         return 0;
995                 }
996                 return pb->pb_version;
997         }
998         default:
999                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1000                 return 0;
1001         }
1002 }
1003 EXPORT_SYMBOL(lustre_msg_get_version);
1004
1005 void lustre_msg_add_version(struct lustre_msg *msg, int version)
1006 {
1007         switch (msg->lm_magic) {
1008         case LUSTRE_MSG_MAGIC_V2: {
1009                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1010                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1011                 pb->pb_version |= version;
1012                 return;
1013         }
1014         default:
1015                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1016         }
1017 }
1018 EXPORT_SYMBOL(lustre_msg_add_version);
1019
1020 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1021 {
1022         switch (msg->lm_magic) {
1023         case LUSTRE_MSG_MAGIC_V2: {
1024                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1025                 if (!pb) {
1026                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1027                         return 0;
1028                 }
1029                 return pb->pb_opc;
1030         }
1031         default:
1032                 CERROR("incorrect message magic: %08x(msg:%p)\n", msg->lm_magic, msg);
1033                 LBUG();
1034                 return 0;
1035         }
1036 }
1037 EXPORT_SYMBOL(lustre_msg_get_opc);
1038
1039 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1040 {
1041         switch (msg->lm_magic) {
1042         case LUSTRE_MSG_MAGIC_V2: {
1043                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1044                 if (!pb) {
1045                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1046                         return 0;
1047                 }
1048                 return pb->pb_last_xid;
1049         }
1050         default:
1051                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1052                 return 0;
1053         }
1054 }
1055 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1056
1057 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1058 {
1059         switch (msg->lm_magic) {
1060         case LUSTRE_MSG_MAGIC_V2: {
1061                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1062                 if (!pb) {
1063                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1064                         return 0;
1065                 }
1066                 return pb->pb_last_committed;
1067         }
1068         default:
1069                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1070                 return 0;
1071         }
1072 }
1073 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1074
1075 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1076 {
1077         switch (msg->lm_magic) {
1078         case LUSTRE_MSG_MAGIC_V1:
1079                 return NULL;
1080         case LUSTRE_MSG_MAGIC_V2: {
1081                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1082                 if (!pb) {
1083                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1084                         return NULL;
1085                 }
1086                 return pb->pb_pre_versions;
1087         }
1088         default:
1089                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1090                 return NULL;
1091         }
1092 }
1093 EXPORT_SYMBOL(lustre_msg_get_versions);
1094
1095 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1096 {
1097         switch (msg->lm_magic) {
1098         case LUSTRE_MSG_MAGIC_V2: {
1099                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1100                 if (!pb) {
1101                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1102                         return 0;
1103                 }
1104                 return pb->pb_transno;
1105         }
1106         default:
1107                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1108                 return 0;
1109         }
1110 }
1111 EXPORT_SYMBOL(lustre_msg_get_transno);
1112
1113 int lustre_msg_get_status(struct lustre_msg *msg)
1114 {
1115         switch (msg->lm_magic) {
1116         case LUSTRE_MSG_MAGIC_V2: {
1117                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1118                 if (!pb) {
1119                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1120                         return -EINVAL;
1121                 }
1122                 return pb->pb_status;
1123         }
1124         default:
1125                 /* status might be printed in debug code while message
1126                  * uninitialized */
1127                 return -EINVAL;
1128         }
1129 }
1130 EXPORT_SYMBOL(lustre_msg_get_status);
1131
1132 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1133 {
1134         switch (msg->lm_magic) {
1135         case LUSTRE_MSG_MAGIC_V2: {
1136                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1137                 if (!pb) {
1138                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1139                         return -EINVAL;
1140                 }
1141                 return pb->pb_slv;
1142         }
1143         default:
1144                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1145                 return -EINVAL;
1146         }
1147 }
1148 EXPORT_SYMBOL(lustre_msg_get_slv);
1149
1150
1151 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1152 {
1153         switch (msg->lm_magic) {
1154         case LUSTRE_MSG_MAGIC_V2: {
1155                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1156                 if (!pb) {
1157                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1158                         return;
1159                 }
1160                 pb->pb_slv = slv;
1161                 return;
1162         }
1163         default:
1164                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1165                 return;
1166         }
1167 }
1168 EXPORT_SYMBOL(lustre_msg_set_slv);
1169
1170 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1171 {
1172         switch (msg->lm_magic) {
1173         case LUSTRE_MSG_MAGIC_V2: {
1174                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1175                 if (!pb) {
1176                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1177                         return -EINVAL;
1178                 }
1179                 return pb->pb_limit;
1180         }
1181         default:
1182                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1183                 return -EINVAL;
1184         }
1185 }
1186 EXPORT_SYMBOL(lustre_msg_get_limit);
1187
1188
1189 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
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) {
1195                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1196                         return;
1197                 }
1198                 pb->pb_limit = limit;
1199                 return;
1200         }
1201         default:
1202                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1203                 return;
1204         }
1205 }
1206 EXPORT_SYMBOL(lustre_msg_set_limit);
1207
1208 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1209 {
1210         switch (msg->lm_magic) {
1211         case LUSTRE_MSG_MAGIC_V2: {
1212                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1213                 if (!pb) {
1214                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1215                         return 0;
1216                 }
1217                 return pb->pb_conn_cnt;
1218         }
1219         default:
1220                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1221                 return 0;
1222         }
1223 }
1224 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1225
1226 int lustre_msg_is_v1(struct lustre_msg *msg)
1227 {
1228         switch (msg->lm_magic) {
1229         case LUSTRE_MSG_MAGIC_V1:
1230         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1231                 return 1;
1232         default:
1233                 return 0;
1234         }
1235 }
1236 EXPORT_SYMBOL(lustre_msg_is_v1);
1237
1238 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1239 {
1240         switch (msg->lm_magic) {
1241         case LUSTRE_MSG_MAGIC_V2:
1242                 return msg->lm_magic;
1243         default:
1244                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1245                 return 0;
1246         }
1247 }
1248 EXPORT_SYMBOL(lustre_msg_get_magic);
1249
1250 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1251 {
1252         switch (msg->lm_magic) {
1253         case LUSTRE_MSG_MAGIC_V1:
1254         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1255                 return 0;
1256         case LUSTRE_MSG_MAGIC_V2: {
1257                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1258                 if (!pb) {
1259                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1260                         return 0;
1261
1262                 }
1263                 return pb->pb_timeout;
1264         }
1265         default:
1266                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1267                 return 0;
1268         }
1269 }
1270
1271 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1272 {
1273         switch (msg->lm_magic) {
1274         case LUSTRE_MSG_MAGIC_V1:
1275         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1276                 return 0;
1277         case LUSTRE_MSG_MAGIC_V2: {
1278                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1279                 if (!pb) {
1280                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1281                         return 0;
1282
1283                 }
1284                 return pb->pb_service_time;
1285         }
1286         default:
1287                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1288                 return 0;
1289         }
1290 }
1291
1292 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1293 {
1294         switch (msg->lm_magic) {
1295         case LUSTRE_MSG_MAGIC_V1:
1296         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1297                 return NULL;
1298         case LUSTRE_MSG_MAGIC_V2: {
1299                 struct ptlrpc_body *pb =
1300                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1301                                           sizeof(struct ptlrpc_body));
1302                 if (!pb)
1303                         return NULL;
1304
1305                 return pb->pb_jobid;
1306         }
1307         default:
1308                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1309                 return NULL;
1310         }
1311 }
1312 EXPORT_SYMBOL(lustre_msg_get_jobid);
1313
1314 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1315 {
1316         switch (msg->lm_magic) {
1317         case LUSTRE_MSG_MAGIC_V2:
1318                 return msg->lm_cksum;
1319         default:
1320                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1321                 return 0;
1322         }
1323 }
1324
1325 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1326 /*
1327  * In 1.6 and 1.8 the checksum was computed only on struct ptlrpc_body as
1328  * it was in 1.6 (88 bytes, smaller than the full size in 1.8).  It makes
1329  * more sense to compute the checksum on the full ptlrpc_body, regardless
1330  * of what size it is, but in order to keep interoperability with 1.8 we
1331  * can optionally also checksum only the first 88 bytes (caller decides). */
1332 # define ptlrpc_body_cksum_size_compat18         88
1333
1334 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg, int compat18)
1335 #else
1336 # warning "remove checksum compatibility support for b1_8"
1337 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1338 #endif
1339 {
1340         switch (msg->lm_magic) {
1341         case LUSTRE_MSG_MAGIC_V2: {
1342                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1343 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1344                 __u32 crc;
1345                 unsigned int hsize = 4;
1346                 __u32 len = compat18 ? ptlrpc_body_cksum_size_compat18 :
1347                             lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1348                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1349                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1350                                        len, NULL, 0, (unsigned char *)&crc,
1351                                        &hsize);
1352                 return crc;
1353 #else
1354 # warning "remove checksum compatibility support for b1_8"
1355                 __u32 crc;
1356                 unsigned int hsize = 4;
1357                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1358                                    lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF),
1359                                    NULL, 0, (unsigned char *)&crc, &hsize);
1360                 return crc;
1361 #endif
1362         }
1363         default:
1364                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1365                 return 0;
1366         }
1367 }
1368
1369 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1370 {
1371         switch (msg->lm_magic) {
1372         case LUSTRE_MSG_MAGIC_V2: {
1373                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1374                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1375                 pb->pb_handle = *handle;
1376                 return;
1377         }
1378         default:
1379                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1380         }
1381 }
1382 EXPORT_SYMBOL(lustre_msg_set_handle);
1383
1384 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1385 {
1386         switch (msg->lm_magic) {
1387         case LUSTRE_MSG_MAGIC_V2: {
1388                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1389                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1390                 pb->pb_type = type;
1391                 return;
1392         }
1393         default:
1394                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1395         }
1396 }
1397 EXPORT_SYMBOL(lustre_msg_set_type);
1398
1399 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1400 {
1401         switch (msg->lm_magic) {
1402         case LUSTRE_MSG_MAGIC_V2: {
1403                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1404                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1405                 pb->pb_opc = opc;
1406                 return;
1407         }
1408         default:
1409                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1410         }
1411 }
1412 EXPORT_SYMBOL(lustre_msg_set_opc);
1413
1414 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1415 {
1416         switch (msg->lm_magic) {
1417         case LUSTRE_MSG_MAGIC_V2: {
1418                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1419                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1420                 pb->pb_last_xid = last_xid;
1421                 return;
1422         }
1423         default:
1424                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1425         }
1426 }
1427 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1428
1429 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1430 {
1431         switch (msg->lm_magic) {
1432         case LUSTRE_MSG_MAGIC_V2: {
1433                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1434                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1435                 pb->pb_last_committed = last_committed;
1436                 return;
1437         }
1438         default:
1439                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1440         }
1441 }
1442 EXPORT_SYMBOL(lustre_msg_set_last_committed);
1443
1444 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1445 {
1446         switch (msg->lm_magic) {
1447         case LUSTRE_MSG_MAGIC_V1:
1448                 return;
1449         case LUSTRE_MSG_MAGIC_V2: {
1450                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1451                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1452                 pb->pb_pre_versions[0] = versions[0];
1453                 pb->pb_pre_versions[1] = versions[1];
1454                 pb->pb_pre_versions[2] = versions[2];
1455                 pb->pb_pre_versions[3] = versions[3];
1456                 return;
1457         }
1458         default:
1459                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1460         }
1461 }
1462 EXPORT_SYMBOL(lustre_msg_set_versions);
1463
1464 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1465 {
1466         switch (msg->lm_magic) {
1467         case LUSTRE_MSG_MAGIC_V2: {
1468                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1469                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1470                 pb->pb_transno = transno;
1471                 return;
1472         }
1473         default:
1474                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1475         }
1476 }
1477 EXPORT_SYMBOL(lustre_msg_set_transno);
1478
1479 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1480 {
1481         switch (msg->lm_magic) {
1482         case LUSTRE_MSG_MAGIC_V2: {
1483                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1484                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1485                 pb->pb_status = status;
1486                 return;
1487         }
1488         default:
1489                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1490         }
1491 }
1492 EXPORT_SYMBOL(lustre_msg_set_status);
1493
1494 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1495 {
1496         switch (msg->lm_magic) {
1497         case LUSTRE_MSG_MAGIC_V2: {
1498                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1499                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1500                 pb->pb_conn_cnt = conn_cnt;
1501                 return;
1502         }
1503         default:
1504                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1505         }
1506 }
1507 EXPORT_SYMBOL(lustre_msg_set_conn_cnt);
1508
1509 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1510 {
1511         switch (msg->lm_magic) {
1512         case LUSTRE_MSG_MAGIC_V1:
1513                 return;
1514         case LUSTRE_MSG_MAGIC_V2: {
1515                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1516                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1517                 pb->pb_timeout = timeout;
1518                 return;
1519         }
1520         default:
1521                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1522         }
1523 }
1524
1525 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1526 {
1527         switch (msg->lm_magic) {
1528         case LUSTRE_MSG_MAGIC_V1:
1529                 return;
1530         case LUSTRE_MSG_MAGIC_V2: {
1531                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1532                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1533                 pb->pb_service_time = service_time;
1534                 return;
1535         }
1536         default:
1537                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1538         }
1539 }
1540
1541 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1542 {
1543         switch (msg->lm_magic) {
1544         case LUSTRE_MSG_MAGIC_V1:
1545                 return;
1546         case LUSTRE_MSG_MAGIC_V2: {
1547                 __u32 opc = lustre_msg_get_opc(msg);
1548                 struct ptlrpc_body *pb;
1549
1550                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1551                  * See the comment in ptlrpc_request_pack(). */
1552                 if (!opc || opc == LDLM_BL_CALLBACK ||
1553                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1554                         return;
1555
1556                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1557                                        sizeof(struct ptlrpc_body));
1558                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1559
1560                 if (jobid != NULL)
1561                         memcpy(pb->pb_jobid, jobid, JOBSTATS_JOBID_SIZE);
1562                 else if (pb->pb_jobid[0] == '\0')
1563                         lustre_get_jobid(pb->pb_jobid);
1564                 return;
1565         }
1566         default:
1567                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1568         }
1569 }
1570 EXPORT_SYMBOL(lustre_msg_set_jobid);
1571
1572 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1573 {
1574         switch (msg->lm_magic) {
1575         case LUSTRE_MSG_MAGIC_V1:
1576                 return;
1577         case LUSTRE_MSG_MAGIC_V2:
1578                 msg->lm_cksum = cksum;
1579                 return;
1580         default:
1581                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1582         }
1583 }
1584
1585
1586 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1587 {
1588         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1589
1590         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1591                                          req->rq_pill.rc_area[RCL_SERVER]);
1592         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1593                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1594 }
1595 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1596
1597 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1598 {
1599         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1600         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1601                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1602 }
1603 EXPORT_SYMBOL(ptlrpc_req_set_repsize);
1604
1605 /**
1606  * Send a remote set_info_async.
1607  *
1608  * This may go from client to server or server to client.
1609  */
1610 int do_set_info_async(struct obd_import *imp,
1611                       int opcode, int version,
1612                       obd_count keylen, void *key,
1613                       obd_count vallen, void *val,
1614                       struct ptlrpc_request_set *set)
1615 {
1616         struct ptlrpc_request *req;
1617         char                  *tmp;
1618         int                    rc;
1619         ENTRY;
1620
1621         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1622         if (req == NULL)
1623                 RETURN(-ENOMEM);
1624
1625         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1626                              RCL_CLIENT, keylen);
1627         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1628                              RCL_CLIENT, vallen);
1629         rc = ptlrpc_request_pack(req, version, opcode);
1630         if (rc) {
1631                 ptlrpc_request_free(req);
1632                 RETURN(rc);
1633         }
1634
1635         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1636         memcpy(tmp, key, keylen);
1637         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1638         memcpy(tmp, val, vallen);
1639
1640         ptlrpc_request_set_replen(req);
1641
1642         if (set) {
1643                 ptlrpc_set_add_req(set, req);
1644                 ptlrpc_check_set(NULL, set);
1645         } else {
1646                 rc = ptlrpc_queue_wait(req);
1647                 ptlrpc_req_finished(req);
1648         }
1649
1650         RETURN(rc);
1651 }
1652 EXPORT_SYMBOL(do_set_info_async);
1653
1654 /* byte flipping routines for all wire types declared in
1655  * lustre_idl.h implemented here.
1656  */
1657 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1658 {
1659         __swab32s (&b->pb_type);
1660         __swab32s (&b->pb_version);
1661         __swab32s (&b->pb_opc);
1662         __swab32s (&b->pb_status);
1663         __swab64s (&b->pb_last_xid);
1664         __swab64s (&b->pb_last_seen);
1665         __swab64s (&b->pb_last_committed);
1666         __swab64s (&b->pb_transno);
1667         __swab32s (&b->pb_flags);
1668         __swab32s (&b->pb_op_flags);
1669         __swab32s (&b->pb_conn_cnt);
1670         __swab32s (&b->pb_timeout);
1671         __swab32s (&b->pb_service_time);
1672         __swab32s (&b->pb_limit);
1673         __swab64s (&b->pb_slv);
1674         __swab64s (&b->pb_pre_versions[0]);
1675         __swab64s (&b->pb_pre_versions[1]);
1676         __swab64s (&b->pb_pre_versions[2]);
1677         __swab64s (&b->pb_pre_versions[3]);
1678         CLASSERT(offsetof(typeof(*b), pb_padding) != 0);
1679         /* While we need to maintain compatibility between
1680          * clients and servers without ptlrpc_body_v2 (< 2.3)
1681          * do not swab any fields beyond pb_jobid, as we are
1682          * using this swab function for both ptlrpc_body
1683          * and ptlrpc_body_v2. */
1684         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1685 }
1686 EXPORT_SYMBOL(lustre_swab_ptlrpc_body);
1687
1688 void lustre_swab_connect(struct obd_connect_data *ocd)
1689 {
1690         __swab64s(&ocd->ocd_connect_flags);
1691         __swab32s(&ocd->ocd_version);
1692         __swab32s(&ocd->ocd_grant);
1693         __swab64s(&ocd->ocd_ibits_known);
1694         __swab32s(&ocd->ocd_index);
1695         __swab32s(&ocd->ocd_brw_size);
1696         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1697          * they are 8-byte values */
1698         __swab16s(&ocd->ocd_grant_extent);
1699         __swab32s(&ocd->ocd_unused);
1700         __swab64s(&ocd->ocd_transno);
1701         __swab32s(&ocd->ocd_group);
1702         __swab32s(&ocd->ocd_cksum_types);
1703         __swab32s(&ocd->ocd_instance);
1704         /* Fields after ocd_cksum_types are only accessible by the receiver
1705          * if the corresponding flag in ocd_connect_flags is set. Accessing
1706          * any field after ocd_maxbytes on the receiver without a valid flag
1707          * may result in out-of-bound memory access and kernel oops. */
1708         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1709                 __swab32s(&ocd->ocd_max_easize);
1710         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1711                 __swab64s(&ocd->ocd_maxbytes);
1712         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1713         CLASSERT(offsetof(typeof(*ocd), padding2) != 0);
1714         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1715         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1716         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1717         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1718         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1719         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1720         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1721         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1722         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1723         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1724         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1725         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1726         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1727 }
1728
1729 void lustre_swab_obdo (struct obdo  *o)
1730 {
1731         __swab64s (&o->o_valid);
1732         __swab64s (&o->o_id);
1733         __swab64s (&o->o_seq);
1734         __swab64s (&o->o_parent_seq);
1735         __swab64s (&o->o_size);
1736         __swab64s (&o->o_mtime);
1737         __swab64s (&o->o_atime);
1738         __swab64s (&o->o_ctime);
1739         __swab64s (&o->o_blocks);
1740         __swab64s (&o->o_grant);
1741         __swab32s (&o->o_blksize);
1742         __swab32s (&o->o_mode);
1743         __swab32s (&o->o_uid);
1744         __swab32s (&o->o_gid);
1745         __swab32s (&o->o_flags);
1746         __swab32s (&o->o_nlink);
1747         __swab32s (&o->o_parent_oid);
1748         __swab32s (&o->o_misc);
1749         __swab64s (&o->o_ioepoch);
1750         __swab32s (&o->o_stripe_idx);
1751         __swab32s (&o->o_parent_ver);
1752         /* o_handle is opaque */
1753         /* o_lcookie is swabbed elsewhere */
1754         __swab32s (&o->o_uid_h);
1755         __swab32s (&o->o_gid_h);
1756         __swab64s (&o->o_data_version);
1757         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1758         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1759         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1760
1761 }
1762 EXPORT_SYMBOL(lustre_swab_obdo);
1763
1764 void lustre_swab_obd_statfs (struct obd_statfs *os)
1765 {
1766         __swab64s (&os->os_type);
1767         __swab64s (&os->os_blocks);
1768         __swab64s (&os->os_bfree);
1769         __swab64s (&os->os_bavail);
1770         __swab64s (&os->os_files);
1771         __swab64s (&os->os_ffree);
1772         /* no need to swab os_fsid */
1773         __swab32s (&os->os_bsize);
1774         __swab32s (&os->os_namelen);
1775         __swab64s (&os->os_maxbytes);
1776         __swab32s (&os->os_state);
1777         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1778         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1779         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1780         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1781         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1782         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1783         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1784         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1785         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1786 }
1787 EXPORT_SYMBOL(lustre_swab_obd_statfs);
1788
1789 void lustre_swab_obd_ioobj (struct obd_ioobj *ioo)
1790 {
1791         __swab64s (&ioo->ioo_id);
1792         __swab64s (&ioo->ioo_seq);
1793         __swab32s (&ioo->ioo_type);
1794         __swab32s (&ioo->ioo_bufcnt);
1795 }
1796 EXPORT_SYMBOL(lustre_swab_obd_ioobj);
1797
1798 void lustre_swab_niobuf_remote (struct niobuf_remote *nbr)
1799 {
1800         __swab64s (&nbr->offset);
1801         __swab32s (&nbr->len);
1802         __swab32s (&nbr->flags);
1803 }
1804 EXPORT_SYMBOL(lustre_swab_niobuf_remote);
1805
1806 void lustre_swab_ost_body (struct ost_body *b)
1807 {
1808         lustre_swab_obdo (&b->oa);
1809 }
1810 EXPORT_SYMBOL(lustre_swab_ost_body);
1811
1812 void lustre_swab_ost_last_id(obd_id *id)
1813 {
1814         __swab64s(id);
1815 }
1816 EXPORT_SYMBOL(lustre_swab_ost_last_id);
1817
1818 void lustre_swab_generic_32s(__u32 *val)
1819 {
1820         __swab32s(val);
1821 }
1822 EXPORT_SYMBOL(lustre_swab_generic_32s);
1823
1824 void lustre_swab_gl_desc(union ldlm_gl_desc *desc)
1825 {
1826         lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid);
1827         __swab64s(&desc->lquota_desc.gl_flags);
1828         __swab64s(&desc->lquota_desc.gl_ver);
1829         __swab64s(&desc->lquota_desc.gl_hardlimit);
1830         __swab64s(&desc->lquota_desc.gl_softlimit);
1831         __swab64s(&desc->lquota_desc.gl_time);
1832         CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0);
1833 }
1834
1835 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1836 {
1837         __swab64s(&lvb->lvb_size);
1838         __swab64s(&lvb->lvb_mtime);
1839         __swab64s(&lvb->lvb_atime);
1840         __swab64s(&lvb->lvb_ctime);
1841         __swab64s(&lvb->lvb_blocks);
1842 }
1843 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1844
1845 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1846 {
1847         __swab64s(&lvb->lvb_size);
1848         __swab64s(&lvb->lvb_mtime);
1849         __swab64s(&lvb->lvb_atime);
1850         __swab64s(&lvb->lvb_ctime);
1851         __swab64s(&lvb->lvb_blocks);
1852         __swab32s(&lvb->lvb_mtime_ns);
1853         __swab32s(&lvb->lvb_atime_ns);
1854         __swab32s(&lvb->lvb_ctime_ns);
1855         __swab32s(&lvb->lvb_padding);
1856 }
1857 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1858
1859 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1860 {
1861         __swab64s(&lvb->lvb_flags);
1862         __swab64s(&lvb->lvb_id_may_rel);
1863         __swab64s(&lvb->lvb_id_rel);
1864         __swab64s(&lvb->lvb_id_qunit);
1865         __swab64s(&lvb->lvb_pad1);
1866 }
1867 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1868
1869 void lustre_swab_mdt_body (struct mdt_body *b)
1870 {
1871         lustre_swab_lu_fid (&b->fid1);
1872         lustre_swab_lu_fid (&b->fid2);
1873         /* handle is opaque */
1874         __swab64s (&b->valid);
1875         __swab64s (&b->size);
1876         __swab64s (&b->mtime);
1877         __swab64s (&b->atime);
1878         __swab64s (&b->ctime);
1879         __swab64s (&b->blocks);
1880         __swab64s (&b->ioepoch);
1881         __swab64s (&b->ino);
1882         __swab32s (&b->fsuid);
1883         __swab32s (&b->fsgid);
1884         __swab32s (&b->capability);
1885         __swab32s (&b->mode);
1886         __swab32s (&b->uid);
1887         __swab32s (&b->gid);
1888         __swab32s (&b->flags);
1889         __swab32s (&b->rdev);
1890         __swab32s (&b->nlink);
1891         __swab32s (&b->generation);
1892         __swab32s (&b->suppgid);
1893         __swab32s (&b->eadatasize);
1894         __swab32s (&b->aclsize);
1895         __swab32s (&b->max_mdsize);
1896         __swab32s (&b->max_cookiesize);
1897         __swab32s (&b->uid_h);
1898         __swab32s (&b->gid_h);
1899         CLASSERT(offsetof(typeof(*b), padding_5) != 0);
1900 }
1901 EXPORT_SYMBOL(lustre_swab_mdt_body);
1902
1903 void lustre_swab_mdt_ioepoch (struct mdt_ioepoch *b)
1904 {
1905         /* handle is opaque */
1906          __swab64s (&b->ioepoch);
1907          __swab32s (&b->flags);
1908          CLASSERT(offsetof(typeof(*b), padding) != 0);
1909 }
1910 EXPORT_SYMBOL(lustre_swab_mdt_ioepoch);
1911
1912 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1913 {
1914         int i;
1915         __swab32s(&mti->mti_lustre_ver);
1916         __swab32s(&mti->mti_stripe_index);
1917         __swab32s(&mti->mti_config_ver);
1918         __swab32s(&mti->mti_flags);
1919         __swab32s(&mti->mti_instance);
1920         __swab32s(&mti->mti_nid_count);
1921         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1922         for (i = 0; i < MTI_NIDS_MAX; i++)
1923                 __swab64s(&mti->mti_nids[i]);
1924 }
1925 EXPORT_SYMBOL(lustre_swab_mgs_target_info);
1926
1927 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1928 {
1929         int i;
1930
1931         __swab64s(&entry->mne_version);
1932         __swab32s(&entry->mne_instance);
1933         __swab32s(&entry->mne_index);
1934         __swab32s(&entry->mne_length);
1935
1936         /* mne_nid_(count|type) must be one byte size because we're gonna
1937          * access it w/o swapping. */
1938         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1939         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1940
1941         /* remove this assertion if ipv6 is supported. */
1942         LASSERT(entry->mne_nid_type == 0);
1943         for (i = 0; i < entry->mne_nid_count; i++) {
1944                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1945                 __swab64s(&entry->u.nids[i]);
1946         }
1947 }
1948 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1949
1950 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1951 {
1952         __swab64s(&body->mcb_offset);
1953         __swab32s(&body->mcb_units);
1954         __swab16s(&body->mcb_type);
1955 }
1956 EXPORT_SYMBOL(lustre_swab_mgs_config_body);
1957
1958 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1959 {
1960         __swab64s(&body->mcr_offset);
1961         __swab64s(&body->mcr_size);
1962 }
1963 EXPORT_SYMBOL(lustre_swab_mgs_config_res);
1964
1965 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1966 {
1967         __swab64s (&i->dqi_bgrace);
1968         __swab64s (&i->dqi_igrace);
1969         __swab32s (&i->dqi_flags);
1970         __swab32s (&i->dqi_valid);
1971 }
1972
1973 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1974 {
1975         __swab64s (&b->dqb_ihardlimit);
1976         __swab64s (&b->dqb_isoftlimit);
1977         __swab64s (&b->dqb_curinodes);
1978         __swab64s (&b->dqb_bhardlimit);
1979         __swab64s (&b->dqb_bsoftlimit);
1980         __swab64s (&b->dqb_curspace);
1981         __swab64s (&b->dqb_btime);
1982         __swab64s (&b->dqb_itime);
1983         __swab32s (&b->dqb_valid);
1984         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1985 }
1986
1987 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1988 {
1989         __swab32s (&q->qc_cmd);
1990         __swab32s (&q->qc_type);
1991         __swab32s (&q->qc_id);
1992         __swab32s (&q->qc_stat);
1993         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1994         lustre_swab_obd_dqblk (&q->qc_dqblk);
1995 }
1996 EXPORT_SYMBOL(lustre_swab_obd_quotactl);
1997
1998 void lustre_swab_mdt_remote_perm (struct mdt_remote_perm *p)
1999 {
2000         __swab32s (&p->rp_uid);
2001         __swab32s (&p->rp_gid);
2002         __swab32s (&p->rp_fsuid);
2003         __swab32s (&p->rp_fsuid_h);
2004         __swab32s (&p->rp_fsgid);
2005         __swab32s (&p->rp_fsgid_h);
2006         __swab32s (&p->rp_access_perm);
2007         __swab32s (&p->rp_padding);
2008 };
2009 EXPORT_SYMBOL(lustre_swab_mdt_remote_perm);
2010
2011 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2012 {
2013         lustre_swab_lu_fid(&gf->gf_fid);
2014         __swab64s(&gf->gf_recno);
2015         __swab32s(&gf->gf_linkno);
2016         __swab32s(&gf->gf_pathlen);
2017 }
2018 EXPORT_SYMBOL(lustre_swab_fid2path);
2019
2020 void lustre_swab_fiemap_extent(struct ll_fiemap_extent *fm_extent)
2021 {
2022         __swab64s(&fm_extent->fe_logical);
2023         __swab64s(&fm_extent->fe_physical);
2024         __swab64s(&fm_extent->fe_length);
2025         __swab32s(&fm_extent->fe_flags);
2026         __swab32s(&fm_extent->fe_device);
2027 }
2028
2029 void lustre_swab_fiemap(struct ll_user_fiemap *fiemap)
2030 {
2031         int i;
2032
2033         __swab64s(&fiemap->fm_start);
2034         __swab64s(&fiemap->fm_length);
2035         __swab32s(&fiemap->fm_flags);
2036         __swab32s(&fiemap->fm_mapped_extents);
2037         __swab32s(&fiemap->fm_extent_count);
2038         __swab32s(&fiemap->fm_reserved);
2039
2040         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2041                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2042 }
2043 EXPORT_SYMBOL(lustre_swab_fiemap);
2044
2045 void lustre_swab_idx_info(struct idx_info *ii)
2046 {
2047         __swab32s(&ii->ii_magic);
2048         __swab32s(&ii->ii_flags);
2049         __swab16s(&ii->ii_count);
2050         __swab32s(&ii->ii_attrs);
2051         lustre_swab_lu_fid(&ii->ii_fid);
2052         __swab64s(&ii->ii_version);
2053         __swab64s(&ii->ii_hash_start);
2054         __swab64s(&ii->ii_hash_end);
2055         __swab16s(&ii->ii_keysize);
2056         __swab16s(&ii->ii_recsize);
2057 }
2058
2059 void lustre_swab_lip_header(struct lu_idxpage *lip)
2060 {
2061         /* swab header */
2062         __swab32s(&lip->lip_magic);
2063         __swab16s(&lip->lip_flags);
2064         __swab16s(&lip->lip_nr);
2065 }
2066 EXPORT_SYMBOL(lustre_swab_lip_header);
2067
2068 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2069 {
2070         __swab32s (&rr->rr_opcode);
2071         __swab32s (&rr->rr_cap);
2072         __swab32s (&rr->rr_fsuid);
2073         /* rr_fsuid_h is unused */
2074         __swab32s (&rr->rr_fsgid);
2075         /* rr_fsgid_h is unused */
2076         __swab32s (&rr->rr_suppgid1);
2077         /* rr_suppgid1_h is unused */
2078         __swab32s (&rr->rr_suppgid2);
2079         /* rr_suppgid2_h is unused */
2080         lustre_swab_lu_fid (&rr->rr_fid1);
2081         lustre_swab_lu_fid (&rr->rr_fid2);
2082         __swab64s (&rr->rr_mtime);
2083         __swab64s (&rr->rr_atime);
2084         __swab64s (&rr->rr_ctime);
2085         __swab64s (&rr->rr_size);
2086         __swab64s (&rr->rr_blocks);
2087         __swab32s (&rr->rr_bias);
2088         __swab32s (&rr->rr_mode);
2089         __swab32s (&rr->rr_flags);
2090
2091         CLASSERT(offsetof(typeof(*rr), rr_padding_2) != 0);
2092         CLASSERT(offsetof(typeof(*rr), rr_padding_3) != 0);
2093         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2094 };
2095 EXPORT_SYMBOL(lustre_swab_mdt_rec_reint);
2096
2097 void lustre_swab_lov_desc (struct lov_desc *ld)
2098 {
2099         __swab32s (&ld->ld_tgt_count);
2100         __swab32s (&ld->ld_active_tgt_count);
2101         __swab32s (&ld->ld_default_stripe_count);
2102         __swab32s (&ld->ld_pattern);
2103         __swab64s (&ld->ld_default_stripe_size);
2104         __swab64s (&ld->ld_default_stripe_offset);
2105         __swab32s (&ld->ld_qos_maxage);
2106         /* uuid endian insensitive */
2107 }
2108 EXPORT_SYMBOL(lustre_swab_lov_desc);
2109
2110 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2111 {
2112         __swab32s (&ld->ld_tgt_count);
2113         __swab32s (&ld->ld_active_tgt_count);
2114         __swab32s (&ld->ld_default_stripe_count);
2115         __swab32s (&ld->ld_pattern);
2116         __swab64s (&ld->ld_default_hash_size);
2117         __swab32s (&ld->ld_qos_maxage);
2118         /* uuid endian insensitive */
2119 }
2120
2121 void lustre_swab_lmv_stripe_md (struct lmv_stripe_md *mea)
2122 {
2123         __swab32s(&mea->mea_magic);
2124         __swab32s(&mea->mea_count);
2125         __swab32s(&mea->mea_master);
2126         CLASSERT(offsetof(typeof(*mea), mea_padding) != 0);
2127 }
2128
2129
2130 static void print_lum (struct lov_user_md *lum)
2131 {
2132         CDEBUG(D_OTHER, "lov_user_md %p:\n", lum);
2133         CDEBUG(D_OTHER, "\tlmm_magic: %#x\n", lum->lmm_magic);
2134         CDEBUG(D_OTHER, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2135         CDEBUG(D_OTHER, "\tlmm_object_id: "LPU64"\n", lum->lmm_object_id);
2136         CDEBUG(D_OTHER, "\tlmm_object_gr: "LPU64"\n", lum->lmm_object_seq);
2137         CDEBUG(D_OTHER, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2138         CDEBUG(D_OTHER, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2139         CDEBUG(D_OTHER, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2140                lum->u.lum_stripe_offset);
2141 }
2142
2143 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2144 {
2145         ENTRY;
2146         __swab32s(&lum->lmm_magic);
2147         __swab32s(&lum->lmm_pattern);
2148         __swab64s(&lum->lmm_object_id);
2149         __swab64s(&lum->lmm_object_seq);
2150         __swab32s(&lum->lmm_stripe_size);
2151         __swab16s(&lum->lmm_stripe_count);
2152         __swab16s(&lum->u.lum_stripe_offset);
2153         print_lum(lum);
2154         EXIT;
2155 }
2156
2157 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2158 {
2159         ENTRY;
2160         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2161         lustre_swab_lov_user_md_common(lum);
2162         EXIT;
2163 }
2164 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2165
2166 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2167 {
2168         ENTRY;
2169         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2170         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2171         /* lmm_pool_name nothing to do with char */
2172         EXIT;
2173 }
2174 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2175
2176 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2177 {
2178         ENTRY;
2179         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2180         __swab32s(&lmm->lmm_magic);
2181         __swab32s(&lmm->lmm_pattern);
2182         __swab64s(&lmm->lmm_object_id);
2183         __swab64s(&lmm->lmm_object_seq);
2184         __swab32s(&lmm->lmm_stripe_size);
2185         __swab16s(&lmm->lmm_stripe_count);
2186         __swab16s(&lmm->lmm_layout_gen);
2187         EXIT;
2188 }
2189 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2190
2191 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2192                                      int stripe_count)
2193 {
2194         int i;
2195         ENTRY;
2196         for (i = 0; i < stripe_count; i++) {
2197                 __swab64s(&(lod[i].l_object_id));
2198                 __swab64s(&(lod[i].l_object_seq));
2199                 __swab32s(&(lod[i].l_ost_gen));
2200                 __swab32s(&(lod[i].l_ost_idx));
2201         }
2202         EXIT;
2203 }
2204 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2205
2206 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2207 {
2208         int  i;
2209
2210         for (i = 0; i < RES_NAME_SIZE; i++)
2211                 __swab64s (&id->name[i]);
2212 }
2213 EXPORT_SYMBOL(lustre_swab_ldlm_res_id);
2214
2215 void lustre_swab_ldlm_policy_data (ldlm_wire_policy_data_t *d)
2216 {
2217         /* the lock data is a union and the first two fields are always an
2218          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2219          * data the same way. */
2220         __swab64s(&d->l_extent.start);
2221         __swab64s(&d->l_extent.end);
2222         __swab64s(&d->l_extent.gid);
2223         __swab64s(&d->l_flock.lfw_owner);
2224         __swab32s(&d->l_flock.lfw_pid);
2225 }
2226 EXPORT_SYMBOL(lustre_swab_ldlm_policy_data);
2227
2228 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2229 {
2230         __swab64s (&i->opc);
2231 }
2232 EXPORT_SYMBOL(lustre_swab_ldlm_intent);
2233
2234 void lustre_swab_ldlm_resource_desc (struct ldlm_resource_desc *r)
2235 {
2236         __swab32s (&r->lr_type);
2237         CLASSERT(offsetof(typeof(*r), lr_padding) != 0);
2238         lustre_swab_ldlm_res_id (&r->lr_name);
2239 }
2240 EXPORT_SYMBOL(lustre_swab_ldlm_resource_desc);
2241
2242 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2243 {
2244         lustre_swab_ldlm_resource_desc (&l->l_resource);
2245         __swab32s (&l->l_req_mode);
2246         __swab32s (&l->l_granted_mode);
2247         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2248 }
2249 EXPORT_SYMBOL(lustre_swab_ldlm_lock_desc);
2250
2251 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2252 {
2253         __swab32s (&rq->lock_flags);
2254         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2255         __swab32s (&rq->lock_count);
2256         /* lock_handle[] opaque */
2257 }
2258 EXPORT_SYMBOL(lustre_swab_ldlm_request);
2259
2260 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2261 {
2262         __swab32s (&r->lock_flags);
2263         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2264         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2265         /* lock_handle opaque */
2266         __swab64s (&r->lock_policy_res1);
2267         __swab64s (&r->lock_policy_res2);
2268 }
2269 EXPORT_SYMBOL(lustre_swab_ldlm_reply);
2270
2271 /* no one calls this */
2272 int llog_log_swabbed(struct llog_log_hdr *hdr)
2273 {
2274         if (hdr->llh_hdr.lrh_type == __swab32(LLOG_HDR_MAGIC))
2275                 return 1;
2276         if (hdr->llh_hdr.lrh_type == LLOG_HDR_MAGIC)
2277                 return 0;
2278         return -1;
2279 }
2280
2281 void lustre_swab_quota_body(struct quota_body *b)
2282 {
2283         lustre_swab_lu_fid(&b->qb_fid);
2284         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2285         __swab32s(&b->qb_flags);
2286         __swab64s(&b->qb_count);
2287         __swab64s(&b->qb_usage);
2288         __swab64s(&b->qb_slv_ver);
2289 }
2290
2291 /* Dump functions */
2292 void dump_ioo(struct obd_ioobj *ioo)
2293 {
2294         CDEBUG(D_RPCTRACE,
2295                "obd_ioobj: ioo_id="LPD64", ioo_seq="LPD64", ioo_type=%d, "
2296                "ioo_bufct=%d\n", ioo->ioo_id, ioo->ioo_seq, ioo->ioo_type,
2297                ioo->ioo_bufcnt);
2298 }
2299 EXPORT_SYMBOL(dump_ioo);
2300
2301 void dump_rniobuf(struct niobuf_remote *nb)
2302 {
2303         CDEBUG(D_RPCTRACE, "niobuf_remote: offset="LPU64", len=%d, flags=%x\n",
2304                nb->offset, nb->len, nb->flags);
2305 }
2306 EXPORT_SYMBOL(dump_rniobuf);
2307
2308 void dump_obdo(struct obdo *oa)
2309 {
2310         __u32 valid = oa->o_valid;
2311
2312         CDEBUG(D_RPCTRACE, "obdo: o_valid = %08x\n", valid);
2313         if (valid & OBD_MD_FLID)
2314                 CDEBUG(D_RPCTRACE, "obdo: o_id = "LPD64"\n", oa->o_id);
2315         if (valid & OBD_MD_FLGROUP)
2316                 CDEBUG(D_RPCTRACE, "obdo: o_seq = "LPD64"\n", oa->o_seq);
2317         if (valid & OBD_MD_FLFID)
2318                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = "LPX64"\n",
2319                        oa->o_parent_seq);
2320         if (valid & OBD_MD_FLSIZE)
2321                 CDEBUG(D_RPCTRACE, "obdo: o_size = "LPD64"\n", oa->o_size);
2322         if (valid & OBD_MD_FLMTIME)
2323                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = "LPD64"\n", oa->o_mtime);
2324         if (valid & OBD_MD_FLATIME)
2325                 CDEBUG(D_RPCTRACE, "obdo: o_atime = "LPD64"\n", oa->o_atime);
2326         if (valid & OBD_MD_FLCTIME)
2327                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = "LPD64"\n", oa->o_ctime);
2328         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2329                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = "LPD64"\n", oa->o_blocks);
2330         if (valid & OBD_MD_FLGRANT)
2331                 CDEBUG(D_RPCTRACE, "obdo: o_grant = "LPD64"\n", oa->o_grant);
2332         if (valid & OBD_MD_FLBLKSZ)
2333                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2334         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2335                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2336                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2337                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2338         if (valid & OBD_MD_FLUID)
2339                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2340         if (valid & OBD_MD_FLUID)
2341                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2342         if (valid & OBD_MD_FLGID)
2343                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2344         if (valid & OBD_MD_FLGID)
2345                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2346         if (valid & OBD_MD_FLFLAGS)
2347                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2348         if (valid & OBD_MD_FLNLINK)
2349                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2350         else if (valid & OBD_MD_FLCKSUM)
2351                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2352                        oa->o_nlink);
2353         if (valid & OBD_MD_FLGENER)
2354                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2355                        oa->o_parent_oid);
2356         if (valid & OBD_MD_FLEPOCH)
2357                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = "LPD64"\n",
2358                        oa->o_ioepoch);
2359         if (valid & OBD_MD_FLFID) {
2360                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2361                        oa->o_stripe_idx);
2362                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2363                        oa->o_parent_ver);
2364         }
2365         if (valid & OBD_MD_FLHANDLE)
2366                 CDEBUG(D_RPCTRACE, "obdo: o_handle = "LPD64"\n",
2367                        oa->o_handle.cookie);
2368         if (valid & OBD_MD_FLCOOKIE)
2369                 CDEBUG(D_RPCTRACE, "obdo: o_lcookie = "
2370                        "(llog_cookie dumping not yet implemented)\n");
2371 }
2372 EXPORT_SYMBOL(dump_obdo);
2373
2374 void dump_ost_body(struct ost_body *ob)
2375 {
2376         dump_obdo(&ob->oa);
2377 }
2378 EXPORT_SYMBOL(dump_ost_body);
2379
2380 void dump_rcs(__u32 *rc)
2381 {
2382         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2383 }
2384 EXPORT_SYMBOL(dump_rcs);
2385
2386 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2387 {
2388         LASSERT(req->rq_reqmsg);
2389
2390         switch (req->rq_reqmsg->lm_magic) {
2391         case LUSTRE_MSG_MAGIC_V2:
2392                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2393         default:
2394                 CERROR("bad lustre msg magic: %#08X\n",
2395                        req->rq_reqmsg->lm_magic);
2396         }
2397         return 0;
2398 }
2399
2400 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2401 {
2402         LASSERT(req->rq_repmsg);
2403
2404         switch (req->rq_repmsg->lm_magic) {
2405         case LUSTRE_MSG_MAGIC_V2:
2406                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2407         default:
2408                 /* uninitialized yet */
2409                 return 0;
2410         }
2411 }
2412
2413 void _debug_req(struct ptlrpc_request *req,
2414                 struct libcfs_debug_msg_data *msgdata,
2415                 const char *fmt, ... )
2416 {
2417         int req_ok = req->rq_reqmsg != NULL;
2418         int rep_ok = req->rq_repmsg != NULL;
2419         lnet_nid_t nid = LNET_NID_ANY;
2420         va_list args;
2421
2422         if (ptlrpc_req_need_swab(req)) {
2423                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2424                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2425         }
2426
2427         if (req->rq_import && req->rq_import->imp_connection)
2428                 nid = req->rq_import->imp_connection->c_peer.nid;
2429         else if (req->rq_export && req->rq_export->exp_connection)
2430                 nid = req->rq_export->exp_connection->c_peer.nid;
2431
2432         va_start(args, fmt);
2433         libcfs_debug_vmsg2(msgdata, fmt, args,
2434                            " req@%p x"LPU64"/t"LPD64"("LPD64") o%d->%s@%s:%d/%d"
2435                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2436                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2437                            req, req->rq_xid, req->rq_transno,
2438                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2439                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2440                            req->rq_import ?
2441                                 req->rq_import->imp_obd->obd_name :
2442                                 req->rq_export ?
2443                                      req->rq_export->exp_client_uuid.uuid :
2444                                      "<?>",
2445                            libcfs_nid2str(nid),
2446                            req->rq_request_portal, req->rq_reply_portal,
2447                            req->rq_reqlen, req->rq_replen,
2448                            req->rq_early_count, req->rq_timedout,
2449                            req->rq_deadline,
2450                            cfs_atomic_read(&req->rq_refcount),
2451                            DEBUG_REQ_FLAGS(req),
2452                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2453                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2454                            req->rq_status,
2455                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2456 }
2457 EXPORT_SYMBOL(_debug_req);
2458
2459 void lustre_swab_lustre_capa(struct lustre_capa *c)
2460 {
2461         lustre_swab_lu_fid(&c->lc_fid);
2462         __swab64s (&c->lc_opc);
2463         __swab64s (&c->lc_uid);
2464         __swab64s (&c->lc_gid);
2465         __swab32s (&c->lc_flags);
2466         __swab32s (&c->lc_keyid);
2467         __swab32s (&c->lc_timeout);
2468         __swab32s (&c->lc_expiry);
2469 }
2470 EXPORT_SYMBOL(lustre_swab_lustre_capa);
2471
2472 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2473 {
2474         __swab64s (&k->lk_seq);
2475         __swab32s (&k->lk_keyid);
2476         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2477 }
2478 EXPORT_SYMBOL(lustre_swab_lustre_capa_key);
2479
2480 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2481 {
2482         __swab32s(&state->hus_states);
2483         __swab32s(&state->hus_archive_id);
2484 }
2485 EXPORT_SYMBOL(lustre_swab_hsm_user_state);
2486
2487 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2488 {
2489         __swab32s(&hss->hss_valid);
2490         __swab64s(&hss->hss_setmask);
2491         __swab64s(&hss->hss_clearmask);
2492         __swab32s(&hss->hss_archive_id);
2493 }
2494 EXPORT_SYMBOL(lustre_swab_hsm_state_set);
2495
2496 void lustre_swab_hsm_extent(struct hsm_extent *extent)
2497 {
2498         __swab64s(&extent->offset);
2499         __swab64s(&extent->length);
2500 }
2501
2502 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2503 {
2504         __swab32s(&action->hca_state);
2505         __swab32s(&action->hca_action);
2506         lustre_swab_hsm_extent(&action->hca_location);
2507 }
2508 EXPORT_SYMBOL(lustre_swab_hsm_current_action);
2509
2510 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2511 {
2512         lustre_swab_lu_fid(&hui->hui_fid);
2513         lustre_swab_hsm_extent(&hui->hui_extent);
2514 }
2515 EXPORT_SYMBOL(lustre_swab_hsm_user_item);
2516
2517 void lustre_swab_layout_intent(struct layout_intent *li)
2518 {
2519         __swab32s(&li->li_opc);
2520         __swab32s(&li->li_flags);
2521         __swab64s(&li->li_start);
2522         __swab64s(&li->li_end);
2523 }
2524 EXPORT_SYMBOL(lustre_swab_layout_intent);
2525
2526 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2527 {
2528         lustre_swab_lu_fid(&hpk->hpk_fid);
2529         __swab64s(&hpk->hpk_cookie);
2530         __swab64s(&hpk->hpk_extent.offset);
2531         __swab64s(&hpk->hpk_extent.length);
2532         __swab16s(&hpk->hpk_flags);
2533         __swab16s(&hpk->hpk_errval);
2534 }
2535 EXPORT_SYMBOL(lustre_swab_hsm_progress_kernel);
2536
2537 void lustre_swab_hsm_request(struct hsm_request *hr)
2538 {
2539         __swab32s(&hr->hr_action);
2540         __swab32s(&hr->hr_archive_id);
2541         __swab64s(&hr->hr_flags);
2542         __swab32s(&hr->hr_itemcount);
2543         __swab32s(&hr->hr_data_len);
2544 }
2545 EXPORT_SYMBOL(lustre_swab_hsm_request);
2546
2547 void lustre_swab_update_buf(struct update_buf *ub)
2548 {
2549         __swab32s(&ub->ub_magic);
2550         __swab32s(&ub->ub_count);
2551 }
2552 EXPORT_SYMBOL(lustre_swab_update_buf);
2553
2554 void lustre_swab_update_reply_buf(struct update_reply *ur)
2555 {
2556         int i;
2557
2558         __swab32s(&ur->ur_version);
2559         __swab32s(&ur->ur_count);
2560         for (i = 0; i < ur->ur_count; i++)
2561                 __swab32s(&ur->ur_lens[i]);
2562 }
2563 EXPORT_SYMBOL(lustre_swab_update_reply_buf);
2564