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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, 2013, Intel Corporation.
31  */
32 /*
33  * This file is part of Lustre, http://www.lustre.org/
34  * Lustre is a trademark of Sun Microsystems, Inc.
35  *
36  * lustre/ptlrpc/pack_generic.c
37  *
38  * (Un)packing of OST requests
39  *
40  * Author: Peter J. Braam <braam@clusterfs.com>
41  * Author: Phil Schwan <phil@clusterfs.com>
42  * Author: Eric Barton <eeb@clusterfs.com>
43  */
44
45 #define DEBUG_SUBSYSTEM S_RPC
46 #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         if (!inout)
649                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
650
651         return 0;
652 }
653
654 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
655 {
656         switch (req->rq_reqmsg->lm_magic) {
657         case LUSTRE_MSG_MAGIC_V2:
658                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
659         default:
660                 CERROR("bad lustre msg magic: %08x\n",
661                        req->rq_reqmsg->lm_magic);
662                 return -EINVAL;
663         }
664 }
665
666 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
667 {
668         switch (req->rq_repmsg->lm_magic) {
669         case LUSTRE_MSG_MAGIC_V2:
670                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
671         default:
672                 CERROR("bad lustre msg magic: %08x\n",
673                        req->rq_repmsg->lm_magic);
674                 return -EINVAL;
675         }
676 }
677
678 static inline int lustre_msg_buflen_v2(struct lustre_msg_v2 *m, int n)
679 {
680         if (n >= m->lm_bufcount)
681                 return 0;
682
683         return m->lm_buflens[n];
684 }
685
686 /**
687  * lustre_msg_buflen - return the length of buffer \a n in message \a m
688  * \param m lustre_msg (request or reply) to look at
689  * \param n message index (base 0)
690  *
691  * returns zero for non-existent message indices
692  */
693 int lustre_msg_buflen(struct lustre_msg *m, int n)
694 {
695         switch (m->lm_magic) {
696         case LUSTRE_MSG_MAGIC_V2:
697                 return lustre_msg_buflen_v2(m, n);
698         default:
699                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
700                 return -EINVAL;
701         }
702 }
703 EXPORT_SYMBOL(lustre_msg_buflen);
704
705 static inline void
706 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, int n, int len)
707 {
708         if (n >= m->lm_bufcount)
709                 LBUG();
710
711         m->lm_buflens[n] = len;
712 }
713
714 void lustre_msg_set_buflen(struct lustre_msg *m, int n, int len)
715 {
716         switch (m->lm_magic) {
717         case LUSTRE_MSG_MAGIC_V2:
718                 lustre_msg_set_buflen_v2(m, n, len);
719                 return;
720         default:
721                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
722         }
723 }
724
725 EXPORT_SYMBOL(lustre_msg_set_buflen);
726
727 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
728  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
729 int lustre_msg_bufcount(struct lustre_msg *m)
730 {
731         switch (m->lm_magic) {
732         case LUSTRE_MSG_MAGIC_V2:
733                 return m->lm_bufcount;
734         default:
735                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
736                 return -EINVAL;
737         }
738 }
739 EXPORT_SYMBOL(lustre_msg_bufcount);
740
741 char *lustre_msg_string(struct lustre_msg *m, int index, int max_len)
742 {
743         /* max_len == 0 means the string should fill the buffer */
744         char *str;
745         int slen, blen;
746
747         switch (m->lm_magic) {
748         case LUSTRE_MSG_MAGIC_V2:
749                 str = lustre_msg_buf_v2(m, index, 0);
750                 blen = lustre_msg_buflen_v2(m, index);
751                 break;
752         default:
753                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
754         }
755
756         if (str == NULL) {
757                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
758                 return NULL;
759         }
760
761         slen = strnlen(str, blen);
762
763         if (slen == blen) {                     /* not NULL terminated */
764                 CERROR("can't unpack non-NULL terminated string in "
765                         "msg %p buffer[%d] len %d\n", m, index, blen);
766                 return NULL;
767         }
768
769         if (max_len == 0) {
770                 if (slen != blen - 1) {
771                         CERROR("can't unpack short string in msg %p "
772                                "buffer[%d] len %d: strlen %d\n",
773                                m, index, blen, slen);
774                         return NULL;
775                 }
776         } else if (slen > max_len) {
777                 CERROR("can't unpack oversized string in msg %p "
778                        "buffer[%d] len %d strlen %d: max %d expected\n",
779                        m, index, blen, slen, max_len);
780                 return NULL;
781         }
782
783         return str;
784 }
785 EXPORT_SYMBOL(lustre_msg_string);
786
787 /* Wrap up the normal fixed length cases */
788 static inline void *__lustre_swab_buf(struct lustre_msg *msg, int index,
789                                       int min_size, void *swabber)
790 {
791         void *ptr = NULL;
792
793         LASSERT(msg != NULL);
794         switch (msg->lm_magic) {
795         case LUSTRE_MSG_MAGIC_V2:
796                 ptr = lustre_msg_buf_v2(msg, index, min_size);
797                 break;
798         default:
799                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
800         }
801
802         if (ptr && swabber)
803                 ((void (*)(void *))swabber)(ptr);
804
805         return ptr;
806 }
807
808 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
809 {
810         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
811                                  sizeof(struct ptlrpc_body_v2));
812 }
813
814 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
815 {
816         switch (msg->lm_magic) {
817         case LUSTRE_MSG_MAGIC_V1:
818         case LUSTRE_MSG_MAGIC_V1_SWABBED:
819                 return 0;
820         case LUSTRE_MSG_MAGIC_V2:
821                 /* already in host endian */
822                 return msg->lm_flags;
823         default:
824                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
825                 return 0;
826         }
827 }
828 EXPORT_SYMBOL(lustre_msghdr_get_flags);
829
830 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
831 {
832         switch (msg->lm_magic) {
833         case LUSTRE_MSG_MAGIC_V1:
834                 return;
835         case LUSTRE_MSG_MAGIC_V2:
836                 msg->lm_flags = flags;
837                 return;
838         default:
839                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
840         }
841 }
842
843 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
844 {
845         switch (msg->lm_magic) {
846         case LUSTRE_MSG_MAGIC_V2: {
847                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
848                 if (!pb) {
849                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
850                         return 0;
851                 }
852                 return pb->pb_flags;
853         }
854         default:
855                 /* flags might be printed in debug code while message
856                  * uninitialized */
857                 return 0;
858         }
859 }
860 EXPORT_SYMBOL(lustre_msg_get_flags);
861
862 void lustre_msg_add_flags(struct lustre_msg *msg, int flags)
863 {
864         switch (msg->lm_magic) {
865         case LUSTRE_MSG_MAGIC_V2: {
866                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
867                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
868                 pb->pb_flags |= flags;
869                 return;
870         }
871         default:
872                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
873         }
874 }
875 EXPORT_SYMBOL(lustre_msg_add_flags);
876
877 void lustre_msg_set_flags(struct lustre_msg *msg, int flags)
878 {
879         switch (msg->lm_magic) {
880         case LUSTRE_MSG_MAGIC_V2: {
881                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
882                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
883                 pb->pb_flags = flags;
884                 return;
885         }
886         default:
887                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
888         }
889 }
890 EXPORT_SYMBOL(lustre_msg_set_flags);
891
892 void lustre_msg_clear_flags(struct lustre_msg *msg, int flags)
893 {
894         switch (msg->lm_magic) {
895         case LUSTRE_MSG_MAGIC_V2: {
896                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
897                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
898                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
899                 return;
900         }
901         default:
902                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
903         }
904 }
905 EXPORT_SYMBOL(lustre_msg_clear_flags);
906
907 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
908 {
909         switch (msg->lm_magic) {
910         case LUSTRE_MSG_MAGIC_V2: {
911                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
912                 if (!pb) {
913                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
914                         return 0;
915                 }
916                 return pb->pb_op_flags;
917         }
918         default:
919                 return 0;
920         }
921 }
922 EXPORT_SYMBOL(lustre_msg_get_op_flags);
923
924 void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags)
925 {
926         switch (msg->lm_magic) {
927         case LUSTRE_MSG_MAGIC_V2: {
928                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
929                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
930                 pb->pb_op_flags |= flags;
931                 return;
932         }
933         default:
934                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
935         }
936 }
937 EXPORT_SYMBOL(lustre_msg_add_op_flags);
938
939 void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags)
940 {
941         switch (msg->lm_magic) {
942         case LUSTRE_MSG_MAGIC_V2: {
943                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
944                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
945                 pb->pb_op_flags |= flags;
946                 return;
947         }
948         default:
949                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
950         }
951 }
952 EXPORT_SYMBOL(lustre_msg_set_op_flags);
953
954 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
955 {
956         switch (msg->lm_magic) {
957         case LUSTRE_MSG_MAGIC_V2: {
958                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
959                 if (!pb) {
960                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
961                         return NULL;
962                 }
963                 return &pb->pb_handle;
964         }
965         default:
966                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
967                 return NULL;
968         }
969 }
970 EXPORT_SYMBOL(lustre_msg_get_handle);
971
972 __u32 lustre_msg_get_type(struct lustre_msg *msg)
973 {
974         switch (msg->lm_magic) {
975         case LUSTRE_MSG_MAGIC_V2: {
976                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
977                 if (!pb) {
978                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
979                         return PTL_RPC_MSG_ERR;
980                 }
981                 return pb->pb_type;
982         }
983         default:
984                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
985                 return PTL_RPC_MSG_ERR;
986         }
987 }
988 EXPORT_SYMBOL(lustre_msg_get_type);
989
990 __u32 lustre_msg_get_version(struct lustre_msg *msg)
991 {
992         switch (msg->lm_magic) {
993         case LUSTRE_MSG_MAGIC_V2: {
994                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
995                 if (!pb) {
996                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
997                         return 0;
998                 }
999                 return pb->pb_version;
1000         }
1001         default:
1002                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1003                 return 0;
1004         }
1005 }
1006 EXPORT_SYMBOL(lustre_msg_get_version);
1007
1008 void lustre_msg_add_version(struct lustre_msg *msg, int version)
1009 {
1010         switch (msg->lm_magic) {
1011         case LUSTRE_MSG_MAGIC_V2: {
1012                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1013                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1014                 pb->pb_version |= version;
1015                 return;
1016         }
1017         default:
1018                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1019         }
1020 }
1021 EXPORT_SYMBOL(lustre_msg_add_version);
1022
1023 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1024 {
1025         switch (msg->lm_magic) {
1026         case LUSTRE_MSG_MAGIC_V2: {
1027                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1028                 if (!pb) {
1029                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1030                         return 0;
1031                 }
1032                 return pb->pb_opc;
1033         }
1034         default:
1035                 CERROR("incorrect message magic: %08x(msg:%p)\n", msg->lm_magic, msg);
1036                 LBUG();
1037                 return 0;
1038         }
1039 }
1040 EXPORT_SYMBOL(lustre_msg_get_opc);
1041
1042 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1043 {
1044         switch (msg->lm_magic) {
1045         case LUSTRE_MSG_MAGIC_V2: {
1046                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1047                 if (!pb) {
1048                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1049                         return 0;
1050                 }
1051                 return pb->pb_last_xid;
1052         }
1053         default:
1054                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1055                 return 0;
1056         }
1057 }
1058 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1059
1060 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1061 {
1062         switch (msg->lm_magic) {
1063         case LUSTRE_MSG_MAGIC_V2: {
1064                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1065                 if (!pb) {
1066                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1067                         return 0;
1068                 }
1069                 return pb->pb_last_committed;
1070         }
1071         default:
1072                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1073                 return 0;
1074         }
1075 }
1076 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1077
1078 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1079 {
1080         switch (msg->lm_magic) {
1081         case LUSTRE_MSG_MAGIC_V1:
1082                 return NULL;
1083         case LUSTRE_MSG_MAGIC_V2: {
1084                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1085                 if (!pb) {
1086                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1087                         return NULL;
1088                 }
1089                 return pb->pb_pre_versions;
1090         }
1091         default:
1092                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1093                 return NULL;
1094         }
1095 }
1096 EXPORT_SYMBOL(lustre_msg_get_versions);
1097
1098 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1099 {
1100         switch (msg->lm_magic) {
1101         case LUSTRE_MSG_MAGIC_V2: {
1102                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1103                 if (!pb) {
1104                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1105                         return 0;
1106                 }
1107                 return pb->pb_transno;
1108         }
1109         default:
1110                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1111                 return 0;
1112         }
1113 }
1114 EXPORT_SYMBOL(lustre_msg_get_transno);
1115
1116 int lustre_msg_get_status(struct lustre_msg *msg)
1117 {
1118         switch (msg->lm_magic) {
1119         case LUSTRE_MSG_MAGIC_V2: {
1120                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1121                 if (!pb) {
1122                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1123                         return -EINVAL;
1124                 }
1125                 return pb->pb_status;
1126         }
1127         default:
1128                 /* status might be printed in debug code while message
1129                  * uninitialized */
1130                 return -EINVAL;
1131         }
1132 }
1133 EXPORT_SYMBOL(lustre_msg_get_status);
1134
1135 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1136 {
1137         switch (msg->lm_magic) {
1138         case LUSTRE_MSG_MAGIC_V2: {
1139                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1140                 if (!pb) {
1141                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1142                         return -EINVAL;
1143                 }
1144                 return pb->pb_slv;
1145         }
1146         default:
1147                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1148                 return -EINVAL;
1149         }
1150 }
1151 EXPORT_SYMBOL(lustre_msg_get_slv);
1152
1153
1154 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1155 {
1156         switch (msg->lm_magic) {
1157         case LUSTRE_MSG_MAGIC_V2: {
1158                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1159                 if (!pb) {
1160                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1161                         return;
1162                 }
1163                 pb->pb_slv = slv;
1164                 return;
1165         }
1166         default:
1167                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1168                 return;
1169         }
1170 }
1171 EXPORT_SYMBOL(lustre_msg_set_slv);
1172
1173 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1174 {
1175         switch (msg->lm_magic) {
1176         case LUSTRE_MSG_MAGIC_V2: {
1177                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1178                 if (!pb) {
1179                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1180                         return -EINVAL;
1181                 }
1182                 return pb->pb_limit;
1183         }
1184         default:
1185                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1186                 return -EINVAL;
1187         }
1188 }
1189 EXPORT_SYMBOL(lustre_msg_get_limit);
1190
1191
1192 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1193 {
1194         switch (msg->lm_magic) {
1195         case LUSTRE_MSG_MAGIC_V2: {
1196                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1197                 if (!pb) {
1198                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1199                         return;
1200                 }
1201                 pb->pb_limit = limit;
1202                 return;
1203         }
1204         default:
1205                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1206                 return;
1207         }
1208 }
1209 EXPORT_SYMBOL(lustre_msg_set_limit);
1210
1211 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1212 {
1213         switch (msg->lm_magic) {
1214         case LUSTRE_MSG_MAGIC_V2: {
1215                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1216                 if (!pb) {
1217                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1218                         return 0;
1219                 }
1220                 return pb->pb_conn_cnt;
1221         }
1222         default:
1223                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1224                 return 0;
1225         }
1226 }
1227 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1228
1229 int lustre_msg_is_v1(struct lustre_msg *msg)
1230 {
1231         switch (msg->lm_magic) {
1232         case LUSTRE_MSG_MAGIC_V1:
1233         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1234                 return 1;
1235         default:
1236                 return 0;
1237         }
1238 }
1239 EXPORT_SYMBOL(lustre_msg_is_v1);
1240
1241 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1242 {
1243         switch (msg->lm_magic) {
1244         case LUSTRE_MSG_MAGIC_V2:
1245                 return msg->lm_magic;
1246         default:
1247                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1248                 return 0;
1249         }
1250 }
1251 EXPORT_SYMBOL(lustre_msg_get_magic);
1252
1253 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1254 {
1255         switch (msg->lm_magic) {
1256         case LUSTRE_MSG_MAGIC_V1:
1257         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1258                 return 0;
1259         case LUSTRE_MSG_MAGIC_V2: {
1260                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1261                 if (!pb) {
1262                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1263                         return 0;
1264
1265                 }
1266                 return pb->pb_timeout;
1267         }
1268         default:
1269                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1270                 return 0;
1271         }
1272 }
1273
1274 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1275 {
1276         switch (msg->lm_magic) {
1277         case LUSTRE_MSG_MAGIC_V1:
1278         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1279                 return 0;
1280         case LUSTRE_MSG_MAGIC_V2: {
1281                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1282                 if (!pb) {
1283                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1284                         return 0;
1285
1286                 }
1287                 return pb->pb_service_time;
1288         }
1289         default:
1290                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1291                 return 0;
1292         }
1293 }
1294
1295 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1296 {
1297         switch (msg->lm_magic) {
1298         case LUSTRE_MSG_MAGIC_V1:
1299         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1300                 return NULL;
1301         case LUSTRE_MSG_MAGIC_V2: {
1302                 struct ptlrpc_body *pb =
1303                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1304                                           sizeof(struct ptlrpc_body));
1305                 if (!pb)
1306                         return NULL;
1307
1308                 return pb->pb_jobid;
1309         }
1310         default:
1311                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1312                 return NULL;
1313         }
1314 }
1315 EXPORT_SYMBOL(lustre_msg_get_jobid);
1316
1317 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1318 {
1319         switch (msg->lm_magic) {
1320         case LUSTRE_MSG_MAGIC_V2:
1321                 return msg->lm_cksum;
1322         default:
1323                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1324                 return 0;
1325         }
1326 }
1327
1328 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1329 /*
1330  * In 1.6 and 1.8 the checksum was computed only on struct ptlrpc_body as
1331  * it was in 1.6 (88 bytes, smaller than the full size in 1.8).  It makes
1332  * more sense to compute the checksum on the full ptlrpc_body, regardless
1333  * of what size it is, but in order to keep interoperability with 1.8 we
1334  * can optionally also checksum only the first 88 bytes (caller decides). */
1335 # define ptlrpc_body_cksum_size_compat18         88
1336
1337 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg, int compat18)
1338 #else
1339 # warning "remove checksum compatibility support for b1_8"
1340 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1341 #endif
1342 {
1343         switch (msg->lm_magic) {
1344         case LUSTRE_MSG_MAGIC_V2: {
1345                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1346 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1347                 __u32 crc;
1348                 unsigned int hsize = 4;
1349                 __u32 len = compat18 ? ptlrpc_body_cksum_size_compat18 :
1350                             lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1351                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1352                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1353                                        len, NULL, 0, (unsigned char *)&crc,
1354                                        &hsize);
1355                 return crc;
1356 #else
1357 # warning "remove checksum compatibility support for b1_8"
1358                 __u32 crc;
1359                 unsigned int hsize = 4;
1360                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1361                                    lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF),
1362                                    NULL, 0, (unsigned char *)&crc, &hsize);
1363                 return crc;
1364 #endif
1365         }
1366         default:
1367                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1368                 return 0;
1369         }
1370 }
1371
1372 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1373 {
1374         switch (msg->lm_magic) {
1375         case LUSTRE_MSG_MAGIC_V2: {
1376                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1377                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1378                 pb->pb_handle = *handle;
1379                 return;
1380         }
1381         default:
1382                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1383         }
1384 }
1385 EXPORT_SYMBOL(lustre_msg_set_handle);
1386
1387 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1388 {
1389         switch (msg->lm_magic) {
1390         case LUSTRE_MSG_MAGIC_V2: {
1391                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1392                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1393                 pb->pb_type = type;
1394                 return;
1395         }
1396         default:
1397                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1398         }
1399 }
1400 EXPORT_SYMBOL(lustre_msg_set_type);
1401
1402 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1403 {
1404         switch (msg->lm_magic) {
1405         case LUSTRE_MSG_MAGIC_V2: {
1406                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1407                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1408                 pb->pb_opc = opc;
1409                 return;
1410         }
1411         default:
1412                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1413         }
1414 }
1415 EXPORT_SYMBOL(lustre_msg_set_opc);
1416
1417 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1418 {
1419         switch (msg->lm_magic) {
1420         case LUSTRE_MSG_MAGIC_V2: {
1421                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1422                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1423                 pb->pb_last_xid = last_xid;
1424                 return;
1425         }
1426         default:
1427                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1428         }
1429 }
1430 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1431
1432 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1433 {
1434         switch (msg->lm_magic) {
1435         case LUSTRE_MSG_MAGIC_V2: {
1436                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1437                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1438                 pb->pb_last_committed = last_committed;
1439                 return;
1440         }
1441         default:
1442                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1443         }
1444 }
1445 EXPORT_SYMBOL(lustre_msg_set_last_committed);
1446
1447 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1448 {
1449         switch (msg->lm_magic) {
1450         case LUSTRE_MSG_MAGIC_V1:
1451                 return;
1452         case LUSTRE_MSG_MAGIC_V2: {
1453                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1454                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1455                 pb->pb_pre_versions[0] = versions[0];
1456                 pb->pb_pre_versions[1] = versions[1];
1457                 pb->pb_pre_versions[2] = versions[2];
1458                 pb->pb_pre_versions[3] = versions[3];
1459                 return;
1460         }
1461         default:
1462                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1463         }
1464 }
1465 EXPORT_SYMBOL(lustre_msg_set_versions);
1466
1467 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1468 {
1469         switch (msg->lm_magic) {
1470         case LUSTRE_MSG_MAGIC_V2: {
1471                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1472                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1473                 pb->pb_transno = transno;
1474                 return;
1475         }
1476         default:
1477                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1478         }
1479 }
1480 EXPORT_SYMBOL(lustre_msg_set_transno);
1481
1482 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1483 {
1484         switch (msg->lm_magic) {
1485         case LUSTRE_MSG_MAGIC_V2: {
1486                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1487                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1488                 pb->pb_status = status;
1489                 return;
1490         }
1491         default:
1492                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1493         }
1494 }
1495 EXPORT_SYMBOL(lustre_msg_set_status);
1496
1497 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1498 {
1499         switch (msg->lm_magic) {
1500         case LUSTRE_MSG_MAGIC_V2: {
1501                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1502                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1503                 pb->pb_conn_cnt = conn_cnt;
1504                 return;
1505         }
1506         default:
1507                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1508         }
1509 }
1510 EXPORT_SYMBOL(lustre_msg_set_conn_cnt);
1511
1512 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1513 {
1514         switch (msg->lm_magic) {
1515         case LUSTRE_MSG_MAGIC_V1:
1516                 return;
1517         case LUSTRE_MSG_MAGIC_V2: {
1518                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1519                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1520                 pb->pb_timeout = timeout;
1521                 return;
1522         }
1523         default:
1524                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1525         }
1526 }
1527
1528 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1529 {
1530         switch (msg->lm_magic) {
1531         case LUSTRE_MSG_MAGIC_V1:
1532                 return;
1533         case LUSTRE_MSG_MAGIC_V2: {
1534                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1535                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1536                 pb->pb_service_time = service_time;
1537                 return;
1538         }
1539         default:
1540                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1541         }
1542 }
1543
1544 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1545 {
1546         switch (msg->lm_magic) {
1547         case LUSTRE_MSG_MAGIC_V1:
1548                 return;
1549         case LUSTRE_MSG_MAGIC_V2: {
1550                 __u32 opc = lustre_msg_get_opc(msg);
1551                 struct ptlrpc_body *pb;
1552
1553                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1554                  * See the comment in ptlrpc_request_pack(). */
1555                 if (!opc || opc == LDLM_BL_CALLBACK ||
1556                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1557                         return;
1558
1559                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1560                                        sizeof(struct ptlrpc_body));
1561                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1562
1563                 if (jobid != NULL)
1564                         memcpy(pb->pb_jobid, jobid, JOBSTATS_JOBID_SIZE);
1565                 else if (pb->pb_jobid[0] == '\0')
1566                         lustre_get_jobid(pb->pb_jobid);
1567                 return;
1568         }
1569         default:
1570                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1571         }
1572 }
1573 EXPORT_SYMBOL(lustre_msg_set_jobid);
1574
1575 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1576 {
1577         switch (msg->lm_magic) {
1578         case LUSTRE_MSG_MAGIC_V1:
1579                 return;
1580         case LUSTRE_MSG_MAGIC_V2:
1581                 msg->lm_cksum = cksum;
1582                 return;
1583         default:
1584                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1585         }
1586 }
1587
1588
1589 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1590 {
1591         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1592
1593         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1594                                          req->rq_pill.rc_area[RCL_SERVER]);
1595         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1596                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1597 }
1598 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1599
1600 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1601 {
1602         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1603         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1604                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1605 }
1606 EXPORT_SYMBOL(ptlrpc_req_set_repsize);
1607
1608 /**
1609  * Send a remote set_info_async.
1610  *
1611  * This may go from client to server or server to client.
1612  */
1613 int do_set_info_async(struct obd_import *imp,
1614                       int opcode, int version,
1615                       obd_count keylen, void *key,
1616                       obd_count vallen, void *val,
1617                       struct ptlrpc_request_set *set)
1618 {
1619         struct ptlrpc_request *req;
1620         char                  *tmp;
1621         int                    rc;
1622         ENTRY;
1623
1624         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1625         if (req == NULL)
1626                 RETURN(-ENOMEM);
1627
1628         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1629                              RCL_CLIENT, keylen);
1630         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1631                              RCL_CLIENT, vallen);
1632         rc = ptlrpc_request_pack(req, version, opcode);
1633         if (rc) {
1634                 ptlrpc_request_free(req);
1635                 RETURN(rc);
1636         }
1637
1638         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1639         memcpy(tmp, key, keylen);
1640         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1641         memcpy(tmp, val, vallen);
1642
1643         ptlrpc_request_set_replen(req);
1644
1645         if (set) {
1646                 ptlrpc_set_add_req(set, req);
1647                 ptlrpc_check_set(NULL, set);
1648         } else {
1649                 rc = ptlrpc_queue_wait(req);
1650                 ptlrpc_req_finished(req);
1651         }
1652
1653         RETURN(rc);
1654 }
1655 EXPORT_SYMBOL(do_set_info_async);
1656
1657 /* byte flipping routines for all wire types declared in
1658  * lustre_idl.h implemented here.
1659  */
1660 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1661 {
1662         __swab32s (&b->pb_type);
1663         __swab32s (&b->pb_version);
1664         __swab32s (&b->pb_opc);
1665         __swab32s (&b->pb_status);
1666         __swab64s (&b->pb_last_xid);
1667         __swab64s (&b->pb_last_seen);
1668         __swab64s (&b->pb_last_committed);
1669         __swab64s (&b->pb_transno);
1670         __swab32s (&b->pb_flags);
1671         __swab32s (&b->pb_op_flags);
1672         __swab32s (&b->pb_conn_cnt);
1673         __swab32s (&b->pb_timeout);
1674         __swab32s (&b->pb_service_time);
1675         __swab32s (&b->pb_limit);
1676         __swab64s (&b->pb_slv);
1677         __swab64s (&b->pb_pre_versions[0]);
1678         __swab64s (&b->pb_pre_versions[1]);
1679         __swab64s (&b->pb_pre_versions[2]);
1680         __swab64s (&b->pb_pre_versions[3]);
1681         CLASSERT(offsetof(typeof(*b), pb_padding) != 0);
1682         /* While we need to maintain compatibility between
1683          * clients and servers without ptlrpc_body_v2 (< 2.3)
1684          * do not swab any fields beyond pb_jobid, as we are
1685          * using this swab function for both ptlrpc_body
1686          * and ptlrpc_body_v2. */
1687         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1688 }
1689 EXPORT_SYMBOL(lustre_swab_ptlrpc_body);
1690
1691 void lustre_swab_connect(struct obd_connect_data *ocd)
1692 {
1693         __swab64s(&ocd->ocd_connect_flags);
1694         __swab32s(&ocd->ocd_version);
1695         __swab32s(&ocd->ocd_grant);
1696         __swab64s(&ocd->ocd_ibits_known);
1697         __swab32s(&ocd->ocd_index);
1698         __swab32s(&ocd->ocd_brw_size);
1699         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1700          * they are 8-byte values */
1701         __swab16s(&ocd->ocd_grant_extent);
1702         __swab32s(&ocd->ocd_unused);
1703         __swab64s(&ocd->ocd_transno);
1704         __swab32s(&ocd->ocd_group);
1705         __swab32s(&ocd->ocd_cksum_types);
1706         __swab32s(&ocd->ocd_instance);
1707         /* Fields after ocd_cksum_types are only accessible by the receiver
1708          * if the corresponding flag in ocd_connect_flags is set. Accessing
1709          * any field after ocd_maxbytes on the receiver without a valid flag
1710          * may result in out-of-bound memory access and kernel oops. */
1711         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1712                 __swab32s(&ocd->ocd_max_easize);
1713         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1714                 __swab64s(&ocd->ocd_maxbytes);
1715         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1716         CLASSERT(offsetof(typeof(*ocd), padding2) != 0);
1717         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1718         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1719         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1720         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1721         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1722         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1723         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1724         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1725         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1726         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1727         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1728         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1729         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1730 }
1731
1732 void lustre_swab_obdo (struct obdo  *o)
1733 {
1734         __swab64s (&o->o_valid);
1735         lustre_swab_ost_id(&o->o_oi);
1736         __swab64s (&o->o_parent_seq);
1737         __swab64s (&o->o_size);
1738         __swab64s (&o->o_mtime);
1739         __swab64s (&o->o_atime);
1740         __swab64s (&o->o_ctime);
1741         __swab64s (&o->o_blocks);
1742         __swab64s (&o->o_grant);
1743         __swab32s (&o->o_blksize);
1744         __swab32s (&o->o_mode);
1745         __swab32s (&o->o_uid);
1746         __swab32s (&o->o_gid);
1747         __swab32s (&o->o_flags);
1748         __swab32s (&o->o_nlink);
1749         __swab32s (&o->o_parent_oid);
1750         __swab32s (&o->o_misc);
1751         __swab64s (&o->o_ioepoch);
1752         __swab32s (&o->o_stripe_idx);
1753         __swab32s (&o->o_parent_ver);
1754         /* o_handle is opaque */
1755         /* o_lcookie is swabbed elsewhere */
1756         __swab32s (&o->o_uid_h);
1757         __swab32s (&o->o_gid_h);
1758         __swab64s (&o->o_data_version);
1759         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1760         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1761         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1762
1763 }
1764 EXPORT_SYMBOL(lustre_swab_obdo);
1765
1766 void lustre_swab_obd_statfs (struct obd_statfs *os)
1767 {
1768         __swab64s (&os->os_type);
1769         __swab64s (&os->os_blocks);
1770         __swab64s (&os->os_bfree);
1771         __swab64s (&os->os_bavail);
1772         __swab64s (&os->os_files);
1773         __swab64s (&os->os_ffree);
1774         /* no need to swab os_fsid */
1775         __swab32s (&os->os_bsize);
1776         __swab32s (&os->os_namelen);
1777         __swab64s (&os->os_maxbytes);
1778         __swab32s (&os->os_state);
1779         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1780         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1781         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1782         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1783         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1784         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1785         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1786         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1787         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1788 }
1789 EXPORT_SYMBOL(lustre_swab_obd_statfs);
1790
1791 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1792 {
1793         lustre_swab_ost_id(&ioo->ioo_oid);
1794         __swab32s(&ioo->ioo_max_brw);
1795         __swab32s(&ioo->ioo_bufcnt);
1796 }
1797 EXPORT_SYMBOL(lustre_swab_obd_ioobj);
1798
1799 void lustre_swab_niobuf_remote (struct niobuf_remote *nbr)
1800 {
1801         __swab64s (&nbr->offset);
1802         __swab32s (&nbr->len);
1803         __swab32s (&nbr->flags);
1804 }
1805 EXPORT_SYMBOL(lustre_swab_niobuf_remote);
1806
1807 void lustre_swab_ost_body (struct ost_body *b)
1808 {
1809         lustre_swab_obdo (&b->oa);
1810 }
1811 EXPORT_SYMBOL(lustre_swab_ost_body);
1812
1813 void lustre_swab_ost_last_id(obd_id *id)
1814 {
1815         __swab64s(id);
1816 }
1817 EXPORT_SYMBOL(lustre_swab_ost_last_id);
1818
1819 void lustre_swab_generic_32s(__u32 *val)
1820 {
1821         __swab32s(val);
1822 }
1823 EXPORT_SYMBOL(lustre_swab_generic_32s);
1824
1825 void lustre_swab_gl_desc(union ldlm_gl_desc *desc)
1826 {
1827         lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid);
1828         __swab64s(&desc->lquota_desc.gl_flags);
1829         __swab64s(&desc->lquota_desc.gl_ver);
1830         __swab64s(&desc->lquota_desc.gl_hardlimit);
1831         __swab64s(&desc->lquota_desc.gl_softlimit);
1832         __swab64s(&desc->lquota_desc.gl_time);
1833         CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0);
1834 }
1835
1836 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1837 {
1838         __swab64s(&lvb->lvb_size);
1839         __swab64s(&lvb->lvb_mtime);
1840         __swab64s(&lvb->lvb_atime);
1841         __swab64s(&lvb->lvb_ctime);
1842         __swab64s(&lvb->lvb_blocks);
1843 }
1844 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1845
1846 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1847 {
1848         __swab64s(&lvb->lvb_size);
1849         __swab64s(&lvb->lvb_mtime);
1850         __swab64s(&lvb->lvb_atime);
1851         __swab64s(&lvb->lvb_ctime);
1852         __swab64s(&lvb->lvb_blocks);
1853         __swab32s(&lvb->lvb_mtime_ns);
1854         __swab32s(&lvb->lvb_atime_ns);
1855         __swab32s(&lvb->lvb_ctime_ns);
1856         __swab32s(&lvb->lvb_padding);
1857 }
1858 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1859
1860 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1861 {
1862         __swab64s(&lvb->lvb_flags);
1863         __swab64s(&lvb->lvb_id_may_rel);
1864         __swab64s(&lvb->lvb_id_rel);
1865         __swab64s(&lvb->lvb_id_qunit);
1866         __swab64s(&lvb->lvb_pad1);
1867 }
1868 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1869
1870 void lustre_swab_mdt_body (struct mdt_body *b)
1871 {
1872         lustre_swab_lu_fid (&b->fid1);
1873         lustre_swab_lu_fid (&b->fid2);
1874         /* handle is opaque */
1875         __swab64s (&b->valid);
1876         __swab64s (&b->size);
1877         __swab64s (&b->mtime);
1878         __swab64s (&b->atime);
1879         __swab64s (&b->ctime);
1880         __swab64s (&b->blocks);
1881         __swab64s (&b->ioepoch);
1882         CLASSERT(offsetof(typeof(*b), unused1) != 0);
1883         __swab32s (&b->fsuid);
1884         __swab32s (&b->fsgid);
1885         __swab32s (&b->capability);
1886         __swab32s (&b->mode);
1887         __swab32s (&b->uid);
1888         __swab32s (&b->gid);
1889         __swab32s (&b->flags);
1890         __swab32s (&b->rdev);
1891         __swab32s (&b->nlink);
1892         CLASSERT(offsetof(typeof(*b), unused2) != 0);
1893         __swab32s (&b->suppgid);
1894         __swab32s (&b->eadatasize);
1895         __swab32s (&b->aclsize);
1896         __swab32s (&b->max_mdsize);
1897         __swab32s (&b->max_cookiesize);
1898         __swab32s (&b->uid_h);
1899         __swab32s (&b->gid_h);
1900         CLASSERT(offsetof(typeof(*b), padding_5) != 0);
1901 }
1902 EXPORT_SYMBOL(lustre_swab_mdt_body);
1903
1904 void lustre_swab_mdt_ioepoch (struct mdt_ioepoch *b)
1905 {
1906         /* handle is opaque */
1907          __swab64s (&b->ioepoch);
1908          __swab32s (&b->flags);
1909          CLASSERT(offsetof(typeof(*b), padding) != 0);
1910 }
1911 EXPORT_SYMBOL(lustre_swab_mdt_ioepoch);
1912
1913 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1914 {
1915         int i;
1916         __swab32s(&mti->mti_lustre_ver);
1917         __swab32s(&mti->mti_stripe_index);
1918         __swab32s(&mti->mti_config_ver);
1919         __swab32s(&mti->mti_flags);
1920         __swab32s(&mti->mti_instance);
1921         __swab32s(&mti->mti_nid_count);
1922         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1923         for (i = 0; i < MTI_NIDS_MAX; i++)
1924                 __swab64s(&mti->mti_nids[i]);
1925 }
1926 EXPORT_SYMBOL(lustre_swab_mgs_target_info);
1927
1928 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1929 {
1930         int i;
1931
1932         __swab64s(&entry->mne_version);
1933         __swab32s(&entry->mne_instance);
1934         __swab32s(&entry->mne_index);
1935         __swab32s(&entry->mne_length);
1936
1937         /* mne_nid_(count|type) must be one byte size because we're gonna
1938          * access it w/o swapping. */
1939         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1940         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1941
1942         /* remove this assertion if ipv6 is supported. */
1943         LASSERT(entry->mne_nid_type == 0);
1944         for (i = 0; i < entry->mne_nid_count; i++) {
1945                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1946                 __swab64s(&entry->u.nids[i]);
1947         }
1948 }
1949 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1950
1951 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1952 {
1953         __swab64s(&body->mcb_offset);
1954         __swab32s(&body->mcb_units);
1955         __swab16s(&body->mcb_type);
1956 }
1957 EXPORT_SYMBOL(lustre_swab_mgs_config_body);
1958
1959 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1960 {
1961         __swab64s(&body->mcr_offset);
1962         __swab64s(&body->mcr_size);
1963 }
1964 EXPORT_SYMBOL(lustre_swab_mgs_config_res);
1965
1966 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1967 {
1968         __swab64s (&i->dqi_bgrace);
1969         __swab64s (&i->dqi_igrace);
1970         __swab32s (&i->dqi_flags);
1971         __swab32s (&i->dqi_valid);
1972 }
1973
1974 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1975 {
1976         __swab64s (&b->dqb_ihardlimit);
1977         __swab64s (&b->dqb_isoftlimit);
1978         __swab64s (&b->dqb_curinodes);
1979         __swab64s (&b->dqb_bhardlimit);
1980         __swab64s (&b->dqb_bsoftlimit);
1981         __swab64s (&b->dqb_curspace);
1982         __swab64s (&b->dqb_btime);
1983         __swab64s (&b->dqb_itime);
1984         __swab32s (&b->dqb_valid);
1985         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1986 }
1987
1988 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1989 {
1990         __swab32s (&q->qc_cmd);
1991         __swab32s (&q->qc_type);
1992         __swab32s (&q->qc_id);
1993         __swab32s (&q->qc_stat);
1994         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1995         lustre_swab_obd_dqblk (&q->qc_dqblk);
1996 }
1997 EXPORT_SYMBOL(lustre_swab_obd_quotactl);
1998
1999 void lustre_swab_mdt_remote_perm (struct mdt_remote_perm *p)
2000 {
2001         __swab32s (&p->rp_uid);
2002         __swab32s (&p->rp_gid);
2003         __swab32s (&p->rp_fsuid);
2004         __swab32s (&p->rp_fsuid_h);
2005         __swab32s (&p->rp_fsgid);
2006         __swab32s (&p->rp_fsgid_h);
2007         __swab32s (&p->rp_access_perm);
2008         __swab32s (&p->rp_padding);
2009 };
2010 EXPORT_SYMBOL(lustre_swab_mdt_remote_perm);
2011
2012 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2013 {
2014         lustre_swab_lu_fid(&gf->gf_fid);
2015         __swab64s(&gf->gf_recno);
2016         __swab32s(&gf->gf_linkno);
2017         __swab32s(&gf->gf_pathlen);
2018 }
2019 EXPORT_SYMBOL(lustre_swab_fid2path);
2020
2021 void lustre_swab_fiemap_extent(struct ll_fiemap_extent *fm_extent)
2022 {
2023         __swab64s(&fm_extent->fe_logical);
2024         __swab64s(&fm_extent->fe_physical);
2025         __swab64s(&fm_extent->fe_length);
2026         __swab32s(&fm_extent->fe_flags);
2027         __swab32s(&fm_extent->fe_device);
2028 }
2029
2030 void lustre_swab_fiemap(struct ll_user_fiemap *fiemap)
2031 {
2032         int i;
2033
2034         __swab64s(&fiemap->fm_start);
2035         __swab64s(&fiemap->fm_length);
2036         __swab32s(&fiemap->fm_flags);
2037         __swab32s(&fiemap->fm_mapped_extents);
2038         __swab32s(&fiemap->fm_extent_count);
2039         __swab32s(&fiemap->fm_reserved);
2040
2041         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2042                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2043 }
2044 EXPORT_SYMBOL(lustre_swab_fiemap);
2045
2046 void lustre_swab_idx_info(struct idx_info *ii)
2047 {
2048         __swab32s(&ii->ii_magic);
2049         __swab32s(&ii->ii_flags);
2050         __swab16s(&ii->ii_count);
2051         __swab32s(&ii->ii_attrs);
2052         lustre_swab_lu_fid(&ii->ii_fid);
2053         __swab64s(&ii->ii_version);
2054         __swab64s(&ii->ii_hash_start);
2055         __swab64s(&ii->ii_hash_end);
2056         __swab16s(&ii->ii_keysize);
2057         __swab16s(&ii->ii_recsize);
2058 }
2059
2060 void lustre_swab_lip_header(struct lu_idxpage *lip)
2061 {
2062         /* swab header */
2063         __swab32s(&lip->lip_magic);
2064         __swab16s(&lip->lip_flags);
2065         __swab16s(&lip->lip_nr);
2066 }
2067 EXPORT_SYMBOL(lustre_swab_lip_header);
2068
2069 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2070 {
2071         __swab32s(&rr->rr_opcode);
2072         __swab32s(&rr->rr_cap);
2073         __swab32s(&rr->rr_fsuid);
2074         /* rr_fsuid_h is unused */
2075         __swab32s(&rr->rr_fsgid);
2076         /* rr_fsgid_h is unused */
2077         __swab32s(&rr->rr_suppgid1);
2078         /* rr_suppgid1_h is unused */
2079         __swab32s(&rr->rr_suppgid2);
2080         /* rr_suppgid2_h is unused */
2081         lustre_swab_lu_fid(&rr->rr_fid1);
2082         lustre_swab_lu_fid(&rr->rr_fid2);
2083         __swab64s(&rr->rr_mtime);
2084         __swab64s(&rr->rr_atime);
2085         __swab64s(&rr->rr_ctime);
2086         __swab64s(&rr->rr_size);
2087         __swab64s(&rr->rr_blocks);
2088         __swab32s(&rr->rr_bias);
2089         __swab32s(&rr->rr_mode);
2090         __swab32s(&rr->rr_flags);
2091         __swab32s(&rr->rr_flags_h);
2092         __swab32s(&rr->rr_umask);
2093
2094         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2095 };
2096 EXPORT_SYMBOL(lustre_swab_mdt_rec_reint);
2097
2098 void lustre_swab_lov_desc (struct lov_desc *ld)
2099 {
2100         __swab32s (&ld->ld_tgt_count);
2101         __swab32s (&ld->ld_active_tgt_count);
2102         __swab32s (&ld->ld_default_stripe_count);
2103         __swab32s (&ld->ld_pattern);
2104         __swab64s (&ld->ld_default_stripe_size);
2105         __swab64s (&ld->ld_default_stripe_offset);
2106         __swab32s (&ld->ld_qos_maxage);
2107         /* uuid endian insensitive */
2108 }
2109 EXPORT_SYMBOL(lustre_swab_lov_desc);
2110
2111 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2112 {
2113         __swab32s (&ld->ld_tgt_count);
2114         __swab32s (&ld->ld_active_tgt_count);
2115         __swab32s (&ld->ld_default_stripe_count);
2116         __swab32s (&ld->ld_pattern);
2117         __swab64s (&ld->ld_default_hash_size);
2118         __swab32s (&ld->ld_qos_maxage);
2119         /* uuid endian insensitive */
2120 }
2121
2122 void lustre_swab_lmv_stripe_md (struct lmv_stripe_md *mea)
2123 {
2124         __swab32s(&mea->mea_magic);
2125         __swab32s(&mea->mea_count);
2126         __swab32s(&mea->mea_master);
2127         CLASSERT(offsetof(typeof(*mea), mea_padding) != 0);
2128 }
2129
2130 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2131 {
2132         int i;
2133
2134         __swab32s(&lum->lum_magic);
2135         __swab32s(&lum->lum_stripe_count);
2136         __swab32s(&lum->lum_stripe_offset);
2137         __swab32s(&lum->lum_hash_type);
2138         __swab32s(&lum->lum_type);
2139         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2140         CLASSERT(offsetof(typeof(*lum), lum_padding2) != 0);
2141         CLASSERT(offsetof(typeof(*lum), lum_padding3) != 0);
2142
2143         for (i = 0; i < lum->lum_stripe_count; i++) {
2144                 __swab32s(&lum->lum_objects[i].lum_mds);
2145                 lustre_swab_lu_fid(&lum->lum_objects[i].lum_fid);
2146         }
2147
2148 }
2149 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2150
2151 static void print_lum (struct lov_user_md *lum)
2152 {
2153         CDEBUG(D_OTHER, "lov_user_md %p:\n", lum);
2154         CDEBUG(D_OTHER, "\tlmm_magic: %#x\n", lum->lmm_magic);
2155         CDEBUG(D_OTHER, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2156         CDEBUG(D_OTHER, "\tlmm_object_id: "LPU64"\n", lmm_oi_id(&lum->lmm_oi));
2157         CDEBUG(D_OTHER, "\tlmm_object_gr: "LPU64"\n", lmm_oi_seq(&lum->lmm_oi));
2158         CDEBUG(D_OTHER, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2159         CDEBUG(D_OTHER, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2160         CDEBUG(D_OTHER, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2161                         lum->lmm_stripe_offset);
2162 }
2163
2164 static void lustre_swab_lmm_oi(struct ost_id *oi)
2165 {
2166         __swab64s(&oi->oi.oi_id);
2167         __swab64s(&oi->oi.oi_seq);
2168 }
2169
2170 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2171 {
2172         ENTRY;
2173         __swab32s(&lum->lmm_magic);
2174         __swab32s(&lum->lmm_pattern);
2175         lustre_swab_lmm_oi(&lum->lmm_oi);
2176         __swab32s(&lum->lmm_stripe_size);
2177         __swab16s(&lum->lmm_stripe_count);
2178         __swab16s(&lum->lmm_stripe_offset);
2179         print_lum(lum);
2180         EXIT;
2181 }
2182
2183 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2184 {
2185         ENTRY;
2186         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2187         lustre_swab_lov_user_md_common(lum);
2188         EXIT;
2189 }
2190 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2191
2192 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2193 {
2194         ENTRY;
2195         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2196         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2197         /* lmm_pool_name nothing to do with char */
2198         EXIT;
2199 }
2200 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2201
2202 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2203 {
2204         ENTRY;
2205         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2206         __swab32s(&lmm->lmm_magic);
2207         __swab32s(&lmm->lmm_pattern);
2208         lustre_swab_lmm_oi(&lmm->lmm_oi);
2209         __swab32s(&lmm->lmm_stripe_size);
2210         __swab16s(&lmm->lmm_stripe_count);
2211         __swab16s(&lmm->lmm_layout_gen);
2212         EXIT;
2213 }
2214 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2215
2216 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2217                                      int stripe_count)
2218 {
2219         int i;
2220         ENTRY;
2221         for (i = 0; i < stripe_count; i++) {
2222                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2223                 __swab32s(&(lod[i].l_ost_gen));
2224                 __swab32s(&(lod[i].l_ost_idx));
2225         }
2226         EXIT;
2227 }
2228 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2229
2230 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2231 {
2232         int  i;
2233
2234         for (i = 0; i < RES_NAME_SIZE; i++)
2235                 __swab64s (&id->name[i]);
2236 }
2237 EXPORT_SYMBOL(lustre_swab_ldlm_res_id);
2238
2239 void lustre_swab_ldlm_policy_data (ldlm_wire_policy_data_t *d)
2240 {
2241         /* the lock data is a union and the first two fields are always an
2242          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2243          * data the same way. */
2244         __swab64s(&d->l_extent.start);
2245         __swab64s(&d->l_extent.end);
2246         __swab64s(&d->l_extent.gid);
2247         __swab64s(&d->l_flock.lfw_owner);
2248         __swab32s(&d->l_flock.lfw_pid);
2249 }
2250 EXPORT_SYMBOL(lustre_swab_ldlm_policy_data);
2251
2252 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2253 {
2254         __swab64s (&i->opc);
2255 }
2256 EXPORT_SYMBOL(lustre_swab_ldlm_intent);
2257
2258 void lustre_swab_ldlm_resource_desc (struct ldlm_resource_desc *r)
2259 {
2260         __swab32s (&r->lr_type);
2261         CLASSERT(offsetof(typeof(*r), lr_padding) != 0);
2262         lustre_swab_ldlm_res_id (&r->lr_name);
2263 }
2264 EXPORT_SYMBOL(lustre_swab_ldlm_resource_desc);
2265
2266 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2267 {
2268         lustre_swab_ldlm_resource_desc (&l->l_resource);
2269         __swab32s (&l->l_req_mode);
2270         __swab32s (&l->l_granted_mode);
2271         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2272 }
2273 EXPORT_SYMBOL(lustre_swab_ldlm_lock_desc);
2274
2275 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2276 {
2277         __swab32s (&rq->lock_flags);
2278         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2279         __swab32s (&rq->lock_count);
2280         /* lock_handle[] opaque */
2281 }
2282 EXPORT_SYMBOL(lustre_swab_ldlm_request);
2283
2284 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2285 {
2286         __swab32s (&r->lock_flags);
2287         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2288         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2289         /* lock_handle opaque */
2290         __swab64s (&r->lock_policy_res1);
2291         __swab64s (&r->lock_policy_res2);
2292 }
2293 EXPORT_SYMBOL(lustre_swab_ldlm_reply);
2294
2295 void lustre_swab_quota_body(struct quota_body *b)
2296 {
2297         lustre_swab_lu_fid(&b->qb_fid);
2298         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2299         __swab32s(&b->qb_flags);
2300         __swab64s(&b->qb_count);
2301         __swab64s(&b->qb_usage);
2302         __swab64s(&b->qb_slv_ver);
2303 }
2304
2305 /* Dump functions */
2306 void dump_ioo(struct obd_ioobj *ioo)
2307 {
2308         CDEBUG(D_RPCTRACE,
2309                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2310                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2311                ioo->ioo_bufcnt);
2312 }
2313 EXPORT_SYMBOL(dump_ioo);
2314
2315 void dump_rniobuf(struct niobuf_remote *nb)
2316 {
2317         CDEBUG(D_RPCTRACE, "niobuf_remote: offset="LPU64", len=%d, flags=%x\n",
2318                nb->offset, nb->len, nb->flags);
2319 }
2320 EXPORT_SYMBOL(dump_rniobuf);
2321
2322 void dump_obdo(struct obdo *oa)
2323 {
2324         __u32 valid = oa->o_valid;
2325
2326         CDEBUG(D_RPCTRACE, "obdo: o_valid = %08x\n", valid);
2327         if (valid & OBD_MD_FLID)
2328                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2329         if (valid & OBD_MD_FLFID)
2330                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = "LPX64"\n",
2331                        oa->o_parent_seq);
2332         if (valid & OBD_MD_FLSIZE)
2333                 CDEBUG(D_RPCTRACE, "obdo: o_size = "LPD64"\n", oa->o_size);
2334         if (valid & OBD_MD_FLMTIME)
2335                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = "LPD64"\n", oa->o_mtime);
2336         if (valid & OBD_MD_FLATIME)
2337                 CDEBUG(D_RPCTRACE, "obdo: o_atime = "LPD64"\n", oa->o_atime);
2338         if (valid & OBD_MD_FLCTIME)
2339                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = "LPD64"\n", oa->o_ctime);
2340         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2341                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = "LPD64"\n", oa->o_blocks);
2342         if (valid & OBD_MD_FLGRANT)
2343                 CDEBUG(D_RPCTRACE, "obdo: o_grant = "LPD64"\n", oa->o_grant);
2344         if (valid & OBD_MD_FLBLKSZ)
2345                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2346         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2347                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2348                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2349                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2350         if (valid & OBD_MD_FLUID)
2351                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2352         if (valid & OBD_MD_FLUID)
2353                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2354         if (valid & OBD_MD_FLGID)
2355                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2356         if (valid & OBD_MD_FLGID)
2357                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2358         if (valid & OBD_MD_FLFLAGS)
2359                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2360         if (valid & OBD_MD_FLNLINK)
2361                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2362         else if (valid & OBD_MD_FLCKSUM)
2363                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2364                        oa->o_nlink);
2365         if (valid & OBD_MD_FLGENER)
2366                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2367                        oa->o_parent_oid);
2368         if (valid & OBD_MD_FLEPOCH)
2369                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = "LPD64"\n",
2370                        oa->o_ioepoch);
2371         if (valid & OBD_MD_FLFID) {
2372                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2373                        oa->o_stripe_idx);
2374                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2375                        oa->o_parent_ver);
2376         }
2377         if (valid & OBD_MD_FLHANDLE)
2378                 CDEBUG(D_RPCTRACE, "obdo: o_handle = "LPD64"\n",
2379                        oa->o_handle.cookie);
2380         if (valid & OBD_MD_FLCOOKIE)
2381                 CDEBUG(D_RPCTRACE, "obdo: o_lcookie = "
2382                        "(llog_cookie dumping not yet implemented)\n");
2383 }
2384 EXPORT_SYMBOL(dump_obdo);
2385
2386 void dump_ost_body(struct ost_body *ob)
2387 {
2388         dump_obdo(&ob->oa);
2389 }
2390 EXPORT_SYMBOL(dump_ost_body);
2391
2392 void dump_rcs(__u32 *rc)
2393 {
2394         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2395 }
2396 EXPORT_SYMBOL(dump_rcs);
2397
2398 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2399 {
2400         LASSERT(req->rq_reqmsg);
2401
2402         switch (req->rq_reqmsg->lm_magic) {
2403         case LUSTRE_MSG_MAGIC_V2:
2404                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2405         default:
2406                 CERROR("bad lustre msg magic: %#08X\n",
2407                        req->rq_reqmsg->lm_magic);
2408         }
2409         return 0;
2410 }
2411
2412 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2413 {
2414         LASSERT(req->rq_repmsg);
2415
2416         switch (req->rq_repmsg->lm_magic) {
2417         case LUSTRE_MSG_MAGIC_V2:
2418                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2419         default:
2420                 /* uninitialized yet */
2421                 return 0;
2422         }
2423 }
2424
2425 void _debug_req(struct ptlrpc_request *req,
2426                 struct libcfs_debug_msg_data *msgdata,
2427                 const char *fmt, ... )
2428 {
2429         int req_ok = req->rq_reqmsg != NULL;
2430         int rep_ok = req->rq_repmsg != NULL;
2431         lnet_nid_t nid = LNET_NID_ANY;
2432         va_list args;
2433
2434         if (ptlrpc_req_need_swab(req)) {
2435                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2436                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2437         }
2438
2439         if (req->rq_import && req->rq_import->imp_connection)
2440                 nid = req->rq_import->imp_connection->c_peer.nid;
2441         else if (req->rq_export && req->rq_export->exp_connection)
2442                 nid = req->rq_export->exp_connection->c_peer.nid;
2443
2444         va_start(args, fmt);
2445         libcfs_debug_vmsg2(msgdata, fmt, args,
2446                            " req@%p x"LPU64"/t"LPD64"("LPD64") o%d->%s@%s:%d/%d"
2447                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2448                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2449                            req, req->rq_xid, req->rq_transno,
2450                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2451                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2452                            req->rq_import ?
2453                                 req->rq_import->imp_obd->obd_name :
2454                                 req->rq_export ?
2455                                      req->rq_export->exp_client_uuid.uuid :
2456                                      "<?>",
2457                            libcfs_nid2str(nid),
2458                            req->rq_request_portal, req->rq_reply_portal,
2459                            req->rq_reqlen, req->rq_replen,
2460                            req->rq_early_count, req->rq_timedout,
2461                            req->rq_deadline,
2462                            cfs_atomic_read(&req->rq_refcount),
2463                            DEBUG_REQ_FLAGS(req),
2464                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2465                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2466                            req->rq_status,
2467                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2468 }
2469 EXPORT_SYMBOL(_debug_req);
2470
2471 void lustre_swab_lustre_capa(struct lustre_capa *c)
2472 {
2473         lustre_swab_lu_fid(&c->lc_fid);
2474         __swab64s (&c->lc_opc);
2475         __swab64s (&c->lc_uid);
2476         __swab64s (&c->lc_gid);
2477         __swab32s (&c->lc_flags);
2478         __swab32s (&c->lc_keyid);
2479         __swab32s (&c->lc_timeout);
2480         __swab32s (&c->lc_expiry);
2481 }
2482 EXPORT_SYMBOL(lustre_swab_lustre_capa);
2483
2484 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2485 {
2486         __swab64s (&k->lk_seq);
2487         __swab32s (&k->lk_keyid);
2488         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2489 }
2490 EXPORT_SYMBOL(lustre_swab_lustre_capa_key);
2491
2492 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2493 {
2494         __swab32s(&state->hus_states);
2495         __swab32s(&state->hus_archive_id);
2496 }
2497 EXPORT_SYMBOL(lustre_swab_hsm_user_state);
2498
2499 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2500 {
2501         __swab32s(&hss->hss_valid);
2502         __swab64s(&hss->hss_setmask);
2503         __swab64s(&hss->hss_clearmask);
2504         __swab32s(&hss->hss_archive_id);
2505 }
2506 EXPORT_SYMBOL(lustre_swab_hsm_state_set);
2507
2508 void lustre_swab_hsm_extent(struct hsm_extent *extent)
2509 {
2510         __swab64s(&extent->offset);
2511         __swab64s(&extent->length);
2512 }
2513
2514 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2515 {
2516         __swab32s(&action->hca_state);
2517         __swab32s(&action->hca_action);
2518         lustre_swab_hsm_extent(&action->hca_location);
2519 }
2520 EXPORT_SYMBOL(lustre_swab_hsm_current_action);
2521
2522 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2523 {
2524         lustre_swab_lu_fid(&hui->hui_fid);
2525         lustre_swab_hsm_extent(&hui->hui_extent);
2526 }
2527 EXPORT_SYMBOL(lustre_swab_hsm_user_item);
2528
2529 void lustre_swab_layout_intent(struct layout_intent *li)
2530 {
2531         __swab32s(&li->li_opc);
2532         __swab32s(&li->li_flags);
2533         __swab64s(&li->li_start);
2534         __swab64s(&li->li_end);
2535 }
2536 EXPORT_SYMBOL(lustre_swab_layout_intent);
2537
2538 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2539 {
2540         lustre_swab_lu_fid(&hpk->hpk_fid);
2541         __swab64s(&hpk->hpk_cookie);
2542         __swab64s(&hpk->hpk_extent.offset);
2543         __swab64s(&hpk->hpk_extent.length);
2544         __swab16s(&hpk->hpk_flags);
2545         __swab16s(&hpk->hpk_errval);
2546 }
2547 EXPORT_SYMBOL(lustre_swab_hsm_progress_kernel);
2548
2549 void lustre_swab_hsm_request(struct hsm_request *hr)
2550 {
2551         __swab32s(&hr->hr_action);
2552         __swab32s(&hr->hr_archive_id);
2553         __swab64s(&hr->hr_flags);
2554         __swab32s(&hr->hr_itemcount);
2555         __swab32s(&hr->hr_data_len);
2556 }
2557 EXPORT_SYMBOL(lustre_swab_hsm_request);
2558
2559 void lustre_swab_update_buf(struct update_buf *ub)
2560 {
2561         __swab32s(&ub->ub_magic);
2562         __swab32s(&ub->ub_count);
2563 }
2564 EXPORT_SYMBOL(lustre_swab_update_buf);
2565
2566 void lustre_swab_update_reply_buf(struct update_reply *ur)
2567 {
2568         int i;
2569
2570         __swab32s(&ur->ur_version);
2571         __swab32s(&ur->ur_count);
2572         for (i = 0; i < ur->ur_count; i++)
2573                 __swab32s(&ur->ur_lens[i]);
2574 }
2575 EXPORT_SYMBOL(lustre_swab_update_reply_buf);
2576
2577 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2578 {
2579         __swab64s(&msl->msl_flags);
2580 }
2581 EXPORT_SYMBOL(lustre_swab_swap_layouts);