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) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2011, 2012, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 *
36 * lustre/ptlrpc/layout.c
37 *
38 * Lustre Metadata Target (mdt) request handler
39 *
40 * Author: Nikita Danilov <nikita@clusterfs.com>
41 */
42 /*
43 * This file contains the "capsule/pill" abstraction layered above PTLRPC.
44 *
45 * Every struct ptlrpc_request contains a "pill", which points to a description
46 * of the format that the request conforms to.
47 */
48
49 #if !defined(__REQ_LAYOUT_USER__)
50
51 #define DEBUG_SUBSYSTEM S_RPC
52
53 #include <linux/module.h>
54
55 /* LUSTRE_VERSION_CODE */
56 #include "../include/lustre_ver.h"
57
58 #include "../include/obd_support.h"
59 /* lustre_swab_mdt_body */
60 #include "../include/lustre/lustre_idl.h"
61 /* obd2cli_tgt() (required by DEBUG_REQ()) */
62 #include "../include/obd.h"
63
64 /* __REQ_LAYOUT_USER__ */
65 #endif
66 /* struct ptlrpc_request, lustre_msg* */
67 #include "../include/lustre_req_layout.h"
68 #include "../include/lustre_acl.h"
69 #include "../include/lustre_debug.h"
70
71 /*
72 * RQFs (see below) refer to two struct req_msg_field arrays describing the
73 * client request and server reply, respectively.
74 */
75 /* empty set of fields... for suitable definition of emptiness. */
76 static const struct req_msg_field *empty[] = {
77 &RMF_PTLRPC_BODY
78 };
79
80 static const struct req_msg_field *mgs_target_info_only[] = {
81 &RMF_PTLRPC_BODY,
82 &RMF_MGS_TARGET_INFO
83 };
84
85 static const struct req_msg_field *mgs_set_info[] = {
86 &RMF_PTLRPC_BODY,
87 &RMF_MGS_SEND_PARAM
88 };
89
90 static const struct req_msg_field *mgs_config_read_client[] = {
91 &RMF_PTLRPC_BODY,
92 &RMF_MGS_CONFIG_BODY
93 };
94
95 static const struct req_msg_field *mgs_config_read_server[] = {
96 &RMF_PTLRPC_BODY,
97 &RMF_MGS_CONFIG_RES
98 };
99
100 static const struct req_msg_field *log_cancel_client[] = {
101 &RMF_PTLRPC_BODY,
102 &RMF_LOGCOOKIES
103 };
104
105 static const struct req_msg_field *mdt_body_only[] = {
106 &RMF_PTLRPC_BODY,
107 &RMF_MDT_BODY
108 };
109
110 static const struct req_msg_field *mdt_body_capa[] = {
111 &RMF_PTLRPC_BODY,
112 &RMF_MDT_BODY,
113 &RMF_CAPA1
114 };
115
116 static const struct req_msg_field *quotactl_only[] = {
117 &RMF_PTLRPC_BODY,
118 &RMF_OBD_QUOTACTL
119 };
120
121 static const struct req_msg_field *quota_body_only[] = {
122 &RMF_PTLRPC_BODY,
123 &RMF_QUOTA_BODY
124 };
125
126 static const struct req_msg_field *ldlm_intent_quota_client[] = {
127 &RMF_PTLRPC_BODY,
128 &RMF_DLM_REQ,
129 &RMF_LDLM_INTENT,
130 &RMF_QUOTA_BODY
131 };
132
133 static const struct req_msg_field *ldlm_intent_quota_server[] = {
134 &RMF_PTLRPC_BODY,
135 &RMF_DLM_REP,
136 &RMF_DLM_LVB,
137 &RMF_QUOTA_BODY
138 };
139
140 static const struct req_msg_field *mdt_close_client[] = {
141 &RMF_PTLRPC_BODY,
142 &RMF_MDT_EPOCH,
143 &RMF_REC_REINT,
144 &RMF_CAPA1
145 };
146
147 static const struct req_msg_field *mdt_release_close_client[] = {
148 &RMF_PTLRPC_BODY,
149 &RMF_MDT_EPOCH,
150 &RMF_REC_REINT,
151 &RMF_CAPA1,
152 &RMF_CLOSE_DATA
153 };
154
155 static const struct req_msg_field *obd_statfs_server[] = {
156 &RMF_PTLRPC_BODY,
157 &RMF_OBD_STATFS
158 };
159
160 static const struct req_msg_field *seq_query_client[] = {
161 &RMF_PTLRPC_BODY,
162 &RMF_SEQ_OPC,
163 &RMF_SEQ_RANGE
164 };
165
166 static const struct req_msg_field *seq_query_server[] = {
167 &RMF_PTLRPC_BODY,
168 &RMF_SEQ_RANGE
169 };
170
171 static const struct req_msg_field *fld_query_client[] = {
172 &RMF_PTLRPC_BODY,
173 &RMF_FLD_OPC,
174 &RMF_FLD_MDFLD
175 };
176
177 static const struct req_msg_field *fld_query_server[] = {
178 &RMF_PTLRPC_BODY,
179 &RMF_FLD_MDFLD
180 };
181
182 static const struct req_msg_field *mds_getattr_name_client[] = {
183 &RMF_PTLRPC_BODY,
184 &RMF_MDT_BODY,
185 &RMF_CAPA1,
186 &RMF_NAME
187 };
188
189 static const struct req_msg_field *mds_reint_client[] = {
190 &RMF_PTLRPC_BODY,
191 &RMF_REC_REINT
192 };
193
194 static const struct req_msg_field *mds_reint_create_client[] = {
195 &RMF_PTLRPC_BODY,
196 &RMF_REC_REINT,
197 &RMF_CAPA1,
198 &RMF_NAME
199 };
200
201 static const struct req_msg_field *mds_reint_create_slave_client[] = {
202 &RMF_PTLRPC_BODY,
203 &RMF_REC_REINT,
204 &RMF_CAPA1,
205 &RMF_NAME,
206 &RMF_EADATA,
207 &RMF_DLM_REQ
208 };
209
210 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
211 &RMF_PTLRPC_BODY,
212 &RMF_REC_REINT,
213 &RMF_CAPA1,
214 &RMF_NAME,
215 &RMF_EADATA,
216 &RMF_DLM_REQ
217 };
218
219 static const struct req_msg_field *mds_reint_create_sym_client[] = {
220 &RMF_PTLRPC_BODY,
221 &RMF_REC_REINT,
222 &RMF_CAPA1,
223 &RMF_NAME,
224 &RMF_SYMTGT,
225 &RMF_DLM_REQ
226 };
227
228 static const struct req_msg_field *mds_reint_open_client[] = {
229 &RMF_PTLRPC_BODY,
230 &RMF_REC_REINT,
231 &RMF_CAPA1,
232 &RMF_CAPA2,
233 &RMF_NAME,
234 &RMF_EADATA
235 };
236
237 static const struct req_msg_field *mds_reint_open_server[] = {
238 &RMF_PTLRPC_BODY,
239 &RMF_MDT_BODY,
240 &RMF_MDT_MD,
241 &RMF_ACL,
242 &RMF_CAPA1,
243 &RMF_CAPA2
244 };
245
246 static const struct req_msg_field *mds_reint_unlink_client[] = {
247 &RMF_PTLRPC_BODY,
248 &RMF_REC_REINT,
249 &RMF_CAPA1,
250 &RMF_NAME,
251 &RMF_DLM_REQ
252 };
253
254 static const struct req_msg_field *mds_reint_link_client[] = {
255 &RMF_PTLRPC_BODY,
256 &RMF_REC_REINT,
257 &RMF_CAPA1,
258 &RMF_CAPA2,
259 &RMF_NAME,
260 &RMF_DLM_REQ
261 };
262
263 static const struct req_msg_field *mds_reint_rename_client[] = {
264 &RMF_PTLRPC_BODY,
265 &RMF_REC_REINT,
266 &RMF_CAPA1,
267 &RMF_CAPA2,
268 &RMF_NAME,
269 &RMF_SYMTGT,
270 &RMF_DLM_REQ
271 };
272
273 static const struct req_msg_field *mds_last_unlink_server[] = {
274 &RMF_PTLRPC_BODY,
275 &RMF_MDT_BODY,
276 &RMF_MDT_MD,
277 &RMF_LOGCOOKIES,
278 &RMF_CAPA1,
279 &RMF_CAPA2
280 };
281
282 static const struct req_msg_field *mds_reint_setattr_client[] = {
283 &RMF_PTLRPC_BODY,
284 &RMF_REC_REINT,
285 &RMF_CAPA1,
286 &RMF_MDT_EPOCH,
287 &RMF_EADATA,
288 &RMF_LOGCOOKIES,
289 &RMF_DLM_REQ
290 };
291
292 static const struct req_msg_field *mds_reint_setxattr_client[] = {
293 &RMF_PTLRPC_BODY,
294 &RMF_REC_REINT,
295 &RMF_CAPA1,
296 &RMF_NAME,
297 &RMF_EADATA,
298 &RMF_DLM_REQ
299 };
300
301 static const struct req_msg_field *mdt_swap_layouts[] = {
302 &RMF_PTLRPC_BODY,
303 &RMF_MDT_BODY,
304 &RMF_SWAP_LAYOUTS,
305 &RMF_CAPA1,
306 &RMF_CAPA2,
307 &RMF_DLM_REQ
308 };
309
310 static const struct req_msg_field *obd_connect_client[] = {
311 &RMF_PTLRPC_BODY,
312 &RMF_TGTUUID,
313 &RMF_CLUUID,
314 &RMF_CONN,
315 &RMF_CONNECT_DATA
316 };
317
318 static const struct req_msg_field *obd_connect_server[] = {
319 &RMF_PTLRPC_BODY,
320 &RMF_CONNECT_DATA
321 };
322
323 static const struct req_msg_field *obd_set_info_client[] = {
324 &RMF_PTLRPC_BODY,
325 &RMF_SETINFO_KEY,
326 &RMF_SETINFO_VAL
327 };
328
329 static const struct req_msg_field *ost_grant_shrink_client[] = {
330 &RMF_PTLRPC_BODY,
331 &RMF_SETINFO_KEY,
332 &RMF_OST_BODY
333 };
334
335 static const struct req_msg_field *mds_getinfo_client[] = {
336 &RMF_PTLRPC_BODY,
337 &RMF_GETINFO_KEY,
338 &RMF_GETINFO_VALLEN
339 };
340
341 static const struct req_msg_field *mds_getinfo_server[] = {
342 &RMF_PTLRPC_BODY,
343 &RMF_GETINFO_VAL,
344 };
345
346 static const struct req_msg_field *ldlm_enqueue_client[] = {
347 &RMF_PTLRPC_BODY,
348 &RMF_DLM_REQ
349 };
350
351 static const struct req_msg_field *ldlm_enqueue_server[] = {
352 &RMF_PTLRPC_BODY,
353 &RMF_DLM_REP
354 };
355
356 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
357 &RMF_PTLRPC_BODY,
358 &RMF_DLM_REP,
359 &RMF_DLM_LVB
360 };
361
362 static const struct req_msg_field *ldlm_cp_callback_client[] = {
363 &RMF_PTLRPC_BODY,
364 &RMF_DLM_REQ,
365 &RMF_DLM_LVB
366 };
367
368 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
369 &RMF_PTLRPC_BODY,
370 &RMF_DLM_REQ,
371 &RMF_DLM_GL_DESC
372 };
373
374 static const struct req_msg_field *ldlm_gl_callback_server[] = {
375 &RMF_PTLRPC_BODY,
376 &RMF_DLM_LVB
377 };
378
379 static const struct req_msg_field *ldlm_intent_basic_client[] = {
380 &RMF_PTLRPC_BODY,
381 &RMF_DLM_REQ,
382 &RMF_LDLM_INTENT,
383 };
384
385 static const struct req_msg_field *ldlm_intent_client[] = {
386 &RMF_PTLRPC_BODY,
387 &RMF_DLM_REQ,
388 &RMF_LDLM_INTENT,
389 &RMF_REC_REINT
390 };
391
392 static const struct req_msg_field *ldlm_intent_server[] = {
393 &RMF_PTLRPC_BODY,
394 &RMF_DLM_REP,
395 &RMF_MDT_BODY,
396 &RMF_MDT_MD,
397 &RMF_ACL
398 };
399
400 static const struct req_msg_field *ldlm_intent_layout_client[] = {
401 &RMF_PTLRPC_BODY,
402 &RMF_DLM_REQ,
403 &RMF_LDLM_INTENT,
404 &RMF_LAYOUT_INTENT,
405 &RMF_EADATA /* for new layout to be set up */
406 };
407
408 static const struct req_msg_field *ldlm_intent_open_server[] = {
409 &RMF_PTLRPC_BODY,
410 &RMF_DLM_REP,
411 &RMF_MDT_BODY,
412 &RMF_MDT_MD,
413 &RMF_ACL,
414 &RMF_CAPA1,
415 &RMF_CAPA2
416 };
417
418 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
419 &RMF_PTLRPC_BODY,
420 &RMF_DLM_REQ,
421 &RMF_LDLM_INTENT,
422 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
423 &RMF_CAPA1,
424 &RMF_NAME
425 };
426
427 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
428 &RMF_PTLRPC_BODY,
429 &RMF_DLM_REP,
430 &RMF_MDT_BODY,
431 &RMF_MDT_MD,
432 &RMF_ACL,
433 &RMF_CAPA1
434 };
435
436 static const struct req_msg_field *ldlm_intent_create_client[] = {
437 &RMF_PTLRPC_BODY,
438 &RMF_DLM_REQ,
439 &RMF_LDLM_INTENT,
440 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
441 &RMF_CAPA1,
442 &RMF_NAME,
443 &RMF_EADATA
444 };
445
446 static const struct req_msg_field *ldlm_intent_open_client[] = {
447 &RMF_PTLRPC_BODY,
448 &RMF_DLM_REQ,
449 &RMF_LDLM_INTENT,
450 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
451 &RMF_CAPA1,
452 &RMF_CAPA2,
453 &RMF_NAME,
454 &RMF_EADATA
455 };
456
457 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
458 &RMF_PTLRPC_BODY,
459 &RMF_DLM_REQ,
460 &RMF_LDLM_INTENT,
461 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
462 &RMF_CAPA1,
463 &RMF_NAME
464 };
465
466 static const struct req_msg_field *ldlm_intent_getxattr_client[] = {
467 &RMF_PTLRPC_BODY,
468 &RMF_DLM_REQ,
469 &RMF_LDLM_INTENT,
470 &RMF_MDT_BODY,
471 &RMF_CAPA1,
472 };
473
474 static const struct req_msg_field *ldlm_intent_getxattr_server[] = {
475 &RMF_PTLRPC_BODY,
476 &RMF_DLM_REP,
477 &RMF_MDT_BODY,
478 &RMF_MDT_MD,
479 &RMF_ACL, /* for req_capsule_extend/mdt_intent_policy */
480 &RMF_EADATA,
481 &RMF_EAVALS,
482 &RMF_EAVALS_LENS
483 };
484
485 static const struct req_msg_field *mds_getxattr_client[] = {
486 &RMF_PTLRPC_BODY,
487 &RMF_MDT_BODY,
488 &RMF_CAPA1,
489 &RMF_NAME,
490 &RMF_EADATA
491 };
492
493 static const struct req_msg_field *mds_getxattr_server[] = {
494 &RMF_PTLRPC_BODY,
495 &RMF_MDT_BODY,
496 &RMF_EADATA
497 };
498
499 static const struct req_msg_field *mds_getattr_server[] = {
500 &RMF_PTLRPC_BODY,
501 &RMF_MDT_BODY,
502 &RMF_MDT_MD,
503 &RMF_ACL,
504 &RMF_CAPA1,
505 &RMF_CAPA2
506 };
507
508 static const struct req_msg_field *mds_setattr_server[] = {
509 &RMF_PTLRPC_BODY,
510 &RMF_MDT_BODY,
511 &RMF_MDT_MD,
512 &RMF_ACL,
513 &RMF_CAPA1,
514 &RMF_CAPA2
515 };
516
517 static const struct req_msg_field *mds_update_client[] = {
518 &RMF_PTLRPC_BODY,
519 &RMF_UPDATE,
520 };
521
522 static const struct req_msg_field *mds_update_server[] = {
523 &RMF_PTLRPC_BODY,
524 &RMF_UPDATE_REPLY,
525 };
526
527 static const struct req_msg_field *llog_origin_handle_create_client[] = {
528 &RMF_PTLRPC_BODY,
529 &RMF_LLOGD_BODY,
530 &RMF_NAME
531 };
532
533 static const struct req_msg_field *llogd_body_only[] = {
534 &RMF_PTLRPC_BODY,
535 &RMF_LLOGD_BODY
536 };
537
538 static const struct req_msg_field *llog_log_hdr_only[] = {
539 &RMF_PTLRPC_BODY,
540 &RMF_LLOG_LOG_HDR
541 };
542
543 static const struct req_msg_field *llogd_conn_body_only[] = {
544 &RMF_PTLRPC_BODY,
545 &RMF_LLOGD_CONN_BODY
546 };
547
548 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
549 &RMF_PTLRPC_BODY,
550 &RMF_LLOGD_BODY,
551 &RMF_EADATA
552 };
553
554 static const struct req_msg_field *obd_idx_read_client[] = {
555 &RMF_PTLRPC_BODY,
556 &RMF_IDX_INFO
557 };
558
559 static const struct req_msg_field *obd_idx_read_server[] = {
560 &RMF_PTLRPC_BODY,
561 &RMF_IDX_INFO
562 };
563
564 static const struct req_msg_field *ost_body_only[] = {
565 &RMF_PTLRPC_BODY,
566 &RMF_OST_BODY
567 };
568
569 static const struct req_msg_field *ost_body_capa[] = {
570 &RMF_PTLRPC_BODY,
571 &RMF_OST_BODY,
572 &RMF_CAPA1
573 };
574
575 static const struct req_msg_field *ost_destroy_client[] = {
576 &RMF_PTLRPC_BODY,
577 &RMF_OST_BODY,
578 &RMF_DLM_REQ,
579 &RMF_CAPA1
580 };
581
582 static const struct req_msg_field *ost_brw_client[] = {
583 &RMF_PTLRPC_BODY,
584 &RMF_OST_BODY,
585 &RMF_OBD_IOOBJ,
586 &RMF_NIOBUF_REMOTE,
587 &RMF_CAPA1
588 };
589
590 static const struct req_msg_field *ost_brw_read_server[] = {
591 &RMF_PTLRPC_BODY,
592 &RMF_OST_BODY
593 };
594
595 static const struct req_msg_field *ost_brw_write_server[] = {
596 &RMF_PTLRPC_BODY,
597 &RMF_OST_BODY,
598 &RMF_RCS
599 };
600
601 static const struct req_msg_field *ost_get_info_generic_server[] = {
602 &RMF_PTLRPC_BODY,
603 &RMF_GENERIC_DATA,
604 };
605
606 static const struct req_msg_field *ost_get_info_generic_client[] = {
607 &RMF_PTLRPC_BODY,
608 &RMF_SETINFO_KEY
609 };
610
611 static const struct req_msg_field *ost_get_last_id_server[] = {
612 &RMF_PTLRPC_BODY,
613 &RMF_OBD_ID
614 };
615
616 static const struct req_msg_field *ost_get_last_fid_server[] = {
617 &RMF_PTLRPC_BODY,
618 &RMF_FID,
619 };
620
621 static const struct req_msg_field *ost_get_fiemap_client[] = {
622 &RMF_PTLRPC_BODY,
623 &RMF_FIEMAP_KEY,
624 &RMF_FIEMAP_VAL
625 };
626
627 static const struct req_msg_field *ost_get_fiemap_server[] = {
628 &RMF_PTLRPC_BODY,
629 &RMF_FIEMAP_VAL
630 };
631
632 static const struct req_msg_field *mdt_hsm_progress[] = {
633 &RMF_PTLRPC_BODY,
634 &RMF_MDT_BODY,
635 &RMF_MDS_HSM_PROGRESS,
636 };
637
638 static const struct req_msg_field *mdt_hsm_ct_register[] = {
639 &RMF_PTLRPC_BODY,
640 &RMF_MDT_BODY,
641 &RMF_MDS_HSM_ARCHIVE,
642 };
643
644 static const struct req_msg_field *mdt_hsm_ct_unregister[] = {
645 &RMF_PTLRPC_BODY,
646 &RMF_MDT_BODY,
647 };
648
649 static const struct req_msg_field *mdt_hsm_action_server[] = {
650 &RMF_PTLRPC_BODY,
651 &RMF_MDT_BODY,
652 &RMF_MDS_HSM_CURRENT_ACTION,
653 };
654
655 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
656 &RMF_PTLRPC_BODY,
657 &RMF_MDT_BODY,
658 &RMF_HSM_USER_STATE,
659 };
660
661 static const struct req_msg_field *mdt_hsm_state_set[] = {
662 &RMF_PTLRPC_BODY,
663 &RMF_MDT_BODY,
664 &RMF_CAPA1,
665 &RMF_HSM_STATE_SET,
666 };
667
668 static const struct req_msg_field *mdt_hsm_request[] = {
669 &RMF_PTLRPC_BODY,
670 &RMF_MDT_BODY,
671 &RMF_MDS_HSM_REQUEST,
672 &RMF_MDS_HSM_USER_ITEM,
673 &RMF_GENERIC_DATA,
674 };
675
676 static struct req_format *req_formats[] = {
677 &RQF_OBD_PING,
678 &RQF_OBD_SET_INFO,
679 &RQF_OBD_IDX_READ,
680 &RQF_SEC_CTX,
681 &RQF_MGS_TARGET_REG,
682 &RQF_MGS_SET_INFO,
683 &RQF_MGS_CONFIG_READ,
684 &RQF_SEQ_QUERY,
685 &RQF_FLD_QUERY,
686 &RQF_MDS_CONNECT,
687 &RQF_MDS_DISCONNECT,
688 &RQF_MDS_GET_INFO,
689 &RQF_MDS_GETSTATUS,
690 &RQF_MDS_STATFS,
691 &RQF_MDS_GETATTR,
692 &RQF_MDS_GETATTR_NAME,
693 &RQF_MDS_GETXATTR,
694 &RQF_MDS_SYNC,
695 &RQF_MDS_CLOSE,
696 &RQF_MDS_RELEASE_CLOSE,
697 &RQF_MDS_PIN,
698 &RQF_MDS_UNPIN,
699 &RQF_MDS_READPAGE,
700 &RQF_MDS_WRITEPAGE,
701 &RQF_MDS_IS_SUBDIR,
702 &RQF_MDS_DONE_WRITING,
703 &RQF_MDS_REINT,
704 &RQF_MDS_REINT_CREATE,
705 &RQF_MDS_REINT_CREATE_RMT_ACL,
706 &RQF_MDS_REINT_CREATE_SLAVE,
707 &RQF_MDS_REINT_CREATE_SYM,
708 &RQF_MDS_REINT_OPEN,
709 &RQF_MDS_REINT_UNLINK,
710 &RQF_MDS_REINT_LINK,
711 &RQF_MDS_REINT_RENAME,
712 &RQF_MDS_REINT_SETATTR,
713 &RQF_MDS_REINT_SETXATTR,
714 &RQF_MDS_QUOTACHECK,
715 &RQF_MDS_QUOTACTL,
716 &RQF_MDS_HSM_PROGRESS,
717 &RQF_MDS_HSM_CT_REGISTER,
718 &RQF_MDS_HSM_CT_UNREGISTER,
719 &RQF_MDS_HSM_STATE_GET,
720 &RQF_MDS_HSM_STATE_SET,
721 &RQF_MDS_HSM_ACTION,
722 &RQF_MDS_HSM_REQUEST,
723 &RQF_MDS_SWAP_LAYOUTS,
724 &RQF_UPDATE_OBJ,
725 &RQF_QC_CALLBACK,
726 &RQF_OST_CONNECT,
727 &RQF_OST_DISCONNECT,
728 &RQF_OST_QUOTACHECK,
729 &RQF_OST_QUOTACTL,
730 &RQF_OST_GETATTR,
731 &RQF_OST_SETATTR,
732 &RQF_OST_CREATE,
733 &RQF_OST_PUNCH,
734 &RQF_OST_SYNC,
735 &RQF_OST_DESTROY,
736 &RQF_OST_BRW_READ,
737 &RQF_OST_BRW_WRITE,
738 &RQF_OST_STATFS,
739 &RQF_OST_SET_GRANT_INFO,
740 &RQF_OST_GET_INFO_GENERIC,
741 &RQF_OST_GET_INFO_LAST_ID,
742 &RQF_OST_GET_INFO_LAST_FID,
743 &RQF_OST_SET_INFO_LAST_FID,
744 &RQF_OST_GET_INFO_FIEMAP,
745 &RQF_LDLM_ENQUEUE,
746 &RQF_LDLM_ENQUEUE_LVB,
747 &RQF_LDLM_CONVERT,
748 &RQF_LDLM_CANCEL,
749 &RQF_LDLM_CALLBACK,
750 &RQF_LDLM_CP_CALLBACK,
751 &RQF_LDLM_BL_CALLBACK,
752 &RQF_LDLM_GL_CALLBACK,
753 &RQF_LDLM_GL_DESC_CALLBACK,
754 &RQF_LDLM_INTENT,
755 &RQF_LDLM_INTENT_BASIC,
756 &RQF_LDLM_INTENT_LAYOUT,
757 &RQF_LDLM_INTENT_GETATTR,
758 &RQF_LDLM_INTENT_OPEN,
759 &RQF_LDLM_INTENT_CREATE,
760 &RQF_LDLM_INTENT_UNLINK,
761 &RQF_LDLM_INTENT_GETXATTR,
762 &RQF_LDLM_INTENT_QUOTA,
763 &RQF_QUOTA_DQACQ,
764 &RQF_LOG_CANCEL,
765 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
766 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
767 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
768 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
769 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
770 &RQF_LLOG_ORIGIN_CONNECT,
771 &RQF_CONNECT,
772 };
773
774 struct req_msg_field {
775 const __u32 rmf_flags;
776 const char *rmf_name;
777 /**
778 * Field length. (-1) means "variable length". If the
779 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
780 * but the actual size must be a whole multiple of \a rmf_size.
781 */
782 const int rmf_size;
783 void (*rmf_swabber)(void *);
784 void (*rmf_dumper)(void *);
785 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
786 };
787
788 enum rmf_flags {
789 /**
790 * The field is a string, must be NUL-terminated.
791 */
792 RMF_F_STRING = BIT(0),
793 /**
794 * The field's buffer size need not match the declared \a rmf_size.
795 */
796 RMF_F_NO_SIZE_CHECK = BIT(1),
797 /**
798 * The field's buffer size must be a whole multiple of the declared \a
799 * rmf_size and the \a rmf_swabber function must work on the declared \a
800 * rmf_size worth of bytes.
801 */
802 RMF_F_STRUCT_ARRAY = BIT(2)
803 };
804
805 struct req_capsule;
806
807 /*
808 * Request fields.
809 */
810 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
811 .rmf_name = (name), \
812 .rmf_flags = (flags), \
813 .rmf_size = (size), \
814 .rmf_swabber = (void (*)(void *))(swabber), \
815 .rmf_dumper = (void (*)(void *))(dumper) \
816 }
817
818 struct req_msg_field RMF_GENERIC_DATA =
819 DEFINE_MSGF("generic_data", 0,
820 -1, NULL, NULL);
821 EXPORT_SYMBOL(RMF_GENERIC_DATA);
822
823 struct req_msg_field RMF_MGS_TARGET_INFO =
824 DEFINE_MSGF("mgs_target_info", 0,
825 sizeof(struct mgs_target_info),
826 lustre_swab_mgs_target_info, NULL);
827 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
828
829 struct req_msg_field RMF_MGS_SEND_PARAM =
830 DEFINE_MSGF("mgs_send_param", 0,
831 sizeof(struct mgs_send_param),
832 NULL, NULL);
833 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
834
835 struct req_msg_field RMF_MGS_CONFIG_BODY =
836 DEFINE_MSGF("mgs_config_read request", 0,
837 sizeof(struct mgs_config_body),
838 lustre_swab_mgs_config_body, NULL);
839 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
840
841 struct req_msg_field RMF_MGS_CONFIG_RES =
842 DEFINE_MSGF("mgs_config_read reply ", 0,
843 sizeof(struct mgs_config_res),
844 lustre_swab_mgs_config_res, NULL);
845 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
846
847 struct req_msg_field RMF_U32 =
848 DEFINE_MSGF("generic u32", 0,
849 sizeof(__u32), lustre_swab_generic_32s, NULL);
850 EXPORT_SYMBOL(RMF_U32);
851
852 struct req_msg_field RMF_SETINFO_VAL =
853 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
854 EXPORT_SYMBOL(RMF_SETINFO_VAL);
855
856 struct req_msg_field RMF_GETINFO_KEY =
857 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
858 EXPORT_SYMBOL(RMF_GETINFO_KEY);
859
860 struct req_msg_field RMF_GETINFO_VALLEN =
861 DEFINE_MSGF("getinfo_vallen", 0,
862 sizeof(__u32), lustre_swab_generic_32s, NULL);
863 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
864
865 struct req_msg_field RMF_GETINFO_VAL =
866 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
867 EXPORT_SYMBOL(RMF_GETINFO_VAL);
868
869 struct req_msg_field RMF_SEQ_OPC =
870 DEFINE_MSGF("seq_query_opc", 0,
871 sizeof(__u32), lustre_swab_generic_32s, NULL);
872 EXPORT_SYMBOL(RMF_SEQ_OPC);
873
874 struct req_msg_field RMF_SEQ_RANGE =
875 DEFINE_MSGF("seq_query_range", 0,
876 sizeof(struct lu_seq_range),
877 lustre_swab_lu_seq_range, NULL);
878 EXPORT_SYMBOL(RMF_SEQ_RANGE);
879
880 struct req_msg_field RMF_FLD_OPC =
881 DEFINE_MSGF("fld_query_opc", 0,
882 sizeof(__u32), lustre_swab_generic_32s, NULL);
883 EXPORT_SYMBOL(RMF_FLD_OPC);
884
885 struct req_msg_field RMF_FLD_MDFLD =
886 DEFINE_MSGF("fld_query_mdfld", 0,
887 sizeof(struct lu_seq_range),
888 lustre_swab_lu_seq_range, NULL);
889 EXPORT_SYMBOL(RMF_FLD_MDFLD);
890
891 struct req_msg_field RMF_MDT_BODY =
892 DEFINE_MSGF("mdt_body", 0,
893 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
894 EXPORT_SYMBOL(RMF_MDT_BODY);
895
896 struct req_msg_field RMF_OBD_QUOTACTL =
897 DEFINE_MSGF("obd_quotactl", 0,
898 sizeof(struct obd_quotactl),
899 lustre_swab_obd_quotactl, NULL);
900 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
901
902 struct req_msg_field RMF_QUOTA_BODY =
903 DEFINE_MSGF("quota_body", 0,
904 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
905 EXPORT_SYMBOL(RMF_QUOTA_BODY);
906
907 struct req_msg_field RMF_MDT_EPOCH =
908 DEFINE_MSGF("mdt_ioepoch", 0,
909 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
910 EXPORT_SYMBOL(RMF_MDT_EPOCH);
911
912 struct req_msg_field RMF_PTLRPC_BODY =
913 DEFINE_MSGF("ptlrpc_body", 0,
914 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
915 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
916
917 struct req_msg_field RMF_CLOSE_DATA =
918 DEFINE_MSGF("data_version", 0,
919 sizeof(struct close_data), lustre_swab_close_data, NULL);
920 EXPORT_SYMBOL(RMF_CLOSE_DATA);
921
922 struct req_msg_field RMF_OBD_STATFS =
923 DEFINE_MSGF("obd_statfs", 0,
924 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
925 EXPORT_SYMBOL(RMF_OBD_STATFS);
926
927 struct req_msg_field RMF_SETINFO_KEY =
928 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
929 EXPORT_SYMBOL(RMF_SETINFO_KEY);
930
931 struct req_msg_field RMF_NAME =
932 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
933 EXPORT_SYMBOL(RMF_NAME);
934
935 struct req_msg_field RMF_SYMTGT =
936 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
937 EXPORT_SYMBOL(RMF_SYMTGT);
938
939 struct req_msg_field RMF_TGTUUID =
940 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
941 NULL);
942 EXPORT_SYMBOL(RMF_TGTUUID);
943
944 struct req_msg_field RMF_CLUUID =
945 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
946 NULL);
947 EXPORT_SYMBOL(RMF_CLUUID);
948
949 struct req_msg_field RMF_STRING =
950 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
951 EXPORT_SYMBOL(RMF_STRING);
952
953 struct req_msg_field RMF_LLOGD_BODY =
954 DEFINE_MSGF("llogd_body", 0,
955 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
956 EXPORT_SYMBOL(RMF_LLOGD_BODY);
957
958 struct req_msg_field RMF_LLOG_LOG_HDR =
959 DEFINE_MSGF("llog_log_hdr", 0,
960 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
961 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
962
963 struct req_msg_field RMF_LLOGD_CONN_BODY =
964 DEFINE_MSGF("llogd_conn_body", 0,
965 sizeof(struct llogd_conn_body),
966 lustre_swab_llogd_conn_body, NULL);
967 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
968
969 /*
970 * connection handle received in MDS_CONNECT request.
971 *
972 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
973 * that the client does not interpret at all.
974 */
975 struct req_msg_field RMF_CONN =
976 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
977 EXPORT_SYMBOL(RMF_CONN);
978
979 struct req_msg_field RMF_CONNECT_DATA =
980 DEFINE_MSGF("cdata",
981 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
982 sizeof(struct obd_connect_data),
983 lustre_swab_connect, NULL);
984 EXPORT_SYMBOL(RMF_CONNECT_DATA);
985
986 struct req_msg_field RMF_DLM_REQ =
987 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
988 sizeof(struct ldlm_request),
989 lustre_swab_ldlm_request, NULL);
990 EXPORT_SYMBOL(RMF_DLM_REQ);
991
992 struct req_msg_field RMF_DLM_REP =
993 DEFINE_MSGF("dlm_rep", 0,
994 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
995 EXPORT_SYMBOL(RMF_DLM_REP);
996
997 struct req_msg_field RMF_LDLM_INTENT =
998 DEFINE_MSGF("ldlm_intent", 0,
999 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
1000 EXPORT_SYMBOL(RMF_LDLM_INTENT);
1001
1002 struct req_msg_field RMF_DLM_LVB =
1003 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
1004 EXPORT_SYMBOL(RMF_DLM_LVB);
1005
1006 struct req_msg_field RMF_DLM_GL_DESC =
1007 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
1008 lustre_swab_gl_desc, NULL);
1009 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
1010
1011 struct req_msg_field RMF_MDT_MD =
1012 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
1013 EXPORT_SYMBOL(RMF_MDT_MD);
1014
1015 struct req_msg_field RMF_REC_REINT =
1016 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
1017 lustre_swab_mdt_rec_reint, NULL);
1018 EXPORT_SYMBOL(RMF_REC_REINT);
1019
1020 /* FIXME: this length should be defined as a macro */
1021 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
1022 NULL, NULL);
1023 EXPORT_SYMBOL(RMF_EADATA);
1024
1025 struct req_msg_field RMF_EAVALS = DEFINE_MSGF("eavals", 0, -1, NULL, NULL);
1026 EXPORT_SYMBOL(RMF_EAVALS);
1027
1028 struct req_msg_field RMF_ACL =
1029 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
1030 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
1031 EXPORT_SYMBOL(RMF_ACL);
1032
1033 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
1034 struct req_msg_field RMF_LOGCOOKIES =
1035 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
1036 sizeof(struct llog_cookie), NULL, NULL);
1037 EXPORT_SYMBOL(RMF_LOGCOOKIES);
1038
1039 struct req_msg_field RMF_CAPA1 =
1040 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1041 lustre_swab_lustre_capa, NULL);
1042 EXPORT_SYMBOL(RMF_CAPA1);
1043
1044 struct req_msg_field RMF_CAPA2 =
1045 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1046 lustre_swab_lustre_capa, NULL);
1047 EXPORT_SYMBOL(RMF_CAPA2);
1048
1049 struct req_msg_field RMF_LAYOUT_INTENT =
1050 DEFINE_MSGF("layout_intent", 0,
1051 sizeof(struct layout_intent), lustre_swab_layout_intent,
1052 NULL);
1053 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1054
1055 /*
1056 * OST request field.
1057 */
1058 struct req_msg_field RMF_OST_BODY =
1059 DEFINE_MSGF("ost_body", 0,
1060 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1061 EXPORT_SYMBOL(RMF_OST_BODY);
1062
1063 struct req_msg_field RMF_OBD_IOOBJ =
1064 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1065 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1066 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1067
1068 struct req_msg_field RMF_NIOBUF_REMOTE =
1069 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1070 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1071 dump_rniobuf);
1072 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1073
1074 struct req_msg_field RMF_RCS =
1075 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1076 lustre_swab_generic_32s, dump_rcs);
1077 EXPORT_SYMBOL(RMF_RCS);
1078
1079 struct req_msg_field RMF_EAVALS_LENS =
1080 DEFINE_MSGF("eavals_lens", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1081 lustre_swab_generic_32s, NULL);
1082 EXPORT_SYMBOL(RMF_EAVALS_LENS);
1083
1084 struct req_msg_field RMF_OBD_ID =
1085 DEFINE_MSGF("u64", 0,
1086 sizeof(u64), lustre_swab_ost_last_id, NULL);
1087 EXPORT_SYMBOL(RMF_OBD_ID);
1088
1089 struct req_msg_field RMF_FID =
1090 DEFINE_MSGF("fid", 0,
1091 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1092 EXPORT_SYMBOL(RMF_FID);
1093
1094 struct req_msg_field RMF_OST_ID =
1095 DEFINE_MSGF("ost_id", 0,
1096 sizeof(struct ost_id), lustre_swab_ost_id, NULL);
1097 EXPORT_SYMBOL(RMF_OST_ID);
1098
1099 struct req_msg_field RMF_FIEMAP_KEY =
1100 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1101 lustre_swab_fiemap, NULL);
1102 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1103
1104 struct req_msg_field RMF_FIEMAP_VAL =
1105 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1106 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1107
1108 struct req_msg_field RMF_IDX_INFO =
1109 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1110 lustre_swab_idx_info, NULL);
1111 EXPORT_SYMBOL(RMF_IDX_INFO);
1112 struct req_msg_field RMF_HSM_USER_STATE =
1113 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1114 lustre_swab_hsm_user_state, NULL);
1115 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1116
1117 struct req_msg_field RMF_HSM_STATE_SET =
1118 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1119 lustre_swab_hsm_state_set, NULL);
1120 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1121
1122 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1123 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1124 lustre_swab_hsm_progress_kernel, NULL);
1125 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1126
1127 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1128 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1129 lustre_swab_hsm_current_action, NULL);
1130 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1131
1132 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1133 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1134 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1135 NULL);
1136 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1137
1138 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1139 DEFINE_MSGF("hsm_archive", 0,
1140 sizeof(__u32), lustre_swab_generic_32s, NULL);
1141 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1142
1143 struct req_msg_field RMF_MDS_HSM_REQUEST =
1144 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1145 lustre_swab_hsm_request, NULL);
1146 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1147
1148 struct req_msg_field RMF_UPDATE = DEFINE_MSGF("update", 0, -1,
1149 lustre_swab_update_buf, NULL);
1150 EXPORT_SYMBOL(RMF_UPDATE);
1151
1152 struct req_msg_field RMF_UPDATE_REPLY = DEFINE_MSGF("update_reply", 0, -1,
1153 lustre_swab_update_reply_buf,
1154 NULL);
1155 EXPORT_SYMBOL(RMF_UPDATE_REPLY);
1156
1157 struct req_msg_field RMF_SWAP_LAYOUTS =
1158 DEFINE_MSGF("swap_layouts", 0, sizeof(struct mdc_swap_layouts),
1159 lustre_swab_swap_layouts, NULL);
1160 EXPORT_SYMBOL(RMF_SWAP_LAYOUTS);
1161 /*
1162 * Request formats.
1163 */
1164
1165 struct req_format {
1166 const char *rf_name;
1167 int rf_idx;
1168 struct {
1169 int nr;
1170 const struct req_msg_field **d;
1171 } rf_fields[RCL_NR];
1172 };
1173
1174 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1175 .rf_name = name, \
1176 .rf_fields = { \
1177 [RCL_CLIENT] = { \
1178 .nr = client_nr, \
1179 .d = client \
1180 }, \
1181 [RCL_SERVER] = { \
1182 .nr = server_nr, \
1183 .d = server \
1184 } \
1185 } \
1186 }
1187
1188 #define DEFINE_REQ_FMT0(name, client, server) \
1189 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1190
1191 struct req_format RQF_OBD_PING =
1192 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1193 EXPORT_SYMBOL(RQF_OBD_PING);
1194
1195 struct req_format RQF_OBD_SET_INFO =
1196 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1197 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1198
1199 /* Read index file through the network */
1200 struct req_format RQF_OBD_IDX_READ =
1201 DEFINE_REQ_FMT0("OBD_IDX_READ",
1202 obd_idx_read_client, obd_idx_read_server);
1203 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1204
1205 struct req_format RQF_SEC_CTX =
1206 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1207 EXPORT_SYMBOL(RQF_SEC_CTX);
1208
1209 struct req_format RQF_MGS_TARGET_REG =
1210 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1211 mgs_target_info_only);
1212 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1213
1214 struct req_format RQF_MGS_SET_INFO =
1215 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1216 mgs_set_info);
1217 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1218
1219 struct req_format RQF_MGS_CONFIG_READ =
1220 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1221 mgs_config_read_server);
1222 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1223
1224 struct req_format RQF_SEQ_QUERY =
1225 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1226 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1227
1228 struct req_format RQF_FLD_QUERY =
1229 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1230 EXPORT_SYMBOL(RQF_FLD_QUERY);
1231
1232 struct req_format RQF_LOG_CANCEL =
1233 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1234 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1235
1236 struct req_format RQF_MDS_QUOTACHECK =
1237 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1238 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1239
1240 struct req_format RQF_OST_QUOTACHECK =
1241 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1242 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1243
1244 struct req_format RQF_MDS_QUOTACTL =
1245 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1246 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1247
1248 struct req_format RQF_OST_QUOTACTL =
1249 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1250 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1251
1252 struct req_format RQF_QC_CALLBACK =
1253 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1254 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1255
1256 struct req_format RQF_QUOTA_DQACQ =
1257 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1258 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1259
1260 struct req_format RQF_LDLM_INTENT_QUOTA =
1261 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1262 ldlm_intent_quota_client,
1263 ldlm_intent_quota_server);
1264 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1265
1266 struct req_format RQF_MDS_GETSTATUS =
1267 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1268 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1269
1270 struct req_format RQF_MDS_STATFS =
1271 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1272 EXPORT_SYMBOL(RQF_MDS_STATFS);
1273
1274 struct req_format RQF_MDS_SYNC =
1275 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1276 EXPORT_SYMBOL(RQF_MDS_SYNC);
1277
1278 struct req_format RQF_MDS_GETATTR =
1279 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1280 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1281
1282 struct req_format RQF_MDS_GETXATTR =
1283 DEFINE_REQ_FMT0("MDS_GETXATTR",
1284 mds_getxattr_client, mds_getxattr_server);
1285 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1286
1287 struct req_format RQF_MDS_GETATTR_NAME =
1288 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1289 mds_getattr_name_client, mds_getattr_server);
1290 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1291
1292 struct req_format RQF_MDS_REINT =
1293 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1294 EXPORT_SYMBOL(RQF_MDS_REINT);
1295
1296 struct req_format RQF_MDS_REINT_CREATE =
1297 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1298 mds_reint_create_client, mdt_body_capa);
1299 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1300
1301 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1302 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1303 mds_reint_create_rmt_acl_client, mdt_body_capa);
1304 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1305
1306 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1307 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1308 mds_reint_create_slave_client, mdt_body_capa);
1309 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1310
1311 struct req_format RQF_MDS_REINT_CREATE_SYM =
1312 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1313 mds_reint_create_sym_client, mdt_body_capa);
1314 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1315
1316 struct req_format RQF_MDS_REINT_OPEN =
1317 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1318 mds_reint_open_client, mds_reint_open_server);
1319 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1320
1321 struct req_format RQF_MDS_REINT_UNLINK =
1322 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1323 mds_last_unlink_server);
1324 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1325
1326 struct req_format RQF_MDS_REINT_LINK =
1327 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1328 mds_reint_link_client, mdt_body_only);
1329 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1330
1331 struct req_format RQF_MDS_REINT_RENAME =
1332 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1333 mds_last_unlink_server);
1334 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1335
1336 struct req_format RQF_MDS_REINT_SETATTR =
1337 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1338 mds_reint_setattr_client, mds_setattr_server);
1339 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1340
1341 struct req_format RQF_MDS_REINT_SETXATTR =
1342 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1343 mds_reint_setxattr_client, mdt_body_only);
1344 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1345
1346 struct req_format RQF_MDS_CONNECT =
1347 DEFINE_REQ_FMT0("MDS_CONNECT",
1348 obd_connect_client, obd_connect_server);
1349 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1350
1351 struct req_format RQF_MDS_DISCONNECT =
1352 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1353 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1354
1355 struct req_format RQF_MDS_GET_INFO =
1356 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1357 mds_getinfo_server);
1358 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1359
1360 struct req_format RQF_UPDATE_OBJ =
1361 DEFINE_REQ_FMT0("OBJECT_UPDATE_OBJ", mds_update_client,
1362 mds_update_server);
1363 EXPORT_SYMBOL(RQF_UPDATE_OBJ);
1364
1365 struct req_format RQF_LDLM_ENQUEUE =
1366 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1367 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1368 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1369
1370 struct req_format RQF_LDLM_ENQUEUE_LVB =
1371 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1372 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1373 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1374
1375 struct req_format RQF_LDLM_CONVERT =
1376 DEFINE_REQ_FMT0("LDLM_CONVERT",
1377 ldlm_enqueue_client, ldlm_enqueue_server);
1378 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1379
1380 struct req_format RQF_LDLM_CANCEL =
1381 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1382 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1383
1384 struct req_format RQF_LDLM_CALLBACK =
1385 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1386 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1387
1388 struct req_format RQF_LDLM_CP_CALLBACK =
1389 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1390 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1391
1392 struct req_format RQF_LDLM_BL_CALLBACK =
1393 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1394 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1395
1396 struct req_format RQF_LDLM_GL_CALLBACK =
1397 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1398 ldlm_gl_callback_server);
1399 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1400
1401 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1402 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1403 ldlm_gl_callback_server);
1404 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1405
1406 struct req_format RQF_LDLM_INTENT_BASIC =
1407 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1408 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1409 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1410
1411 struct req_format RQF_LDLM_INTENT =
1412 DEFINE_REQ_FMT0("LDLM_INTENT",
1413 ldlm_intent_client, ldlm_intent_server);
1414 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1415
1416 struct req_format RQF_LDLM_INTENT_LAYOUT =
1417 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1418 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1419 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1420
1421 struct req_format RQF_LDLM_INTENT_GETATTR =
1422 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1423 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1424 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1425
1426 struct req_format RQF_LDLM_INTENT_OPEN =
1427 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1428 ldlm_intent_open_client, ldlm_intent_open_server);
1429 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1430
1431 struct req_format RQF_LDLM_INTENT_CREATE =
1432 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1433 ldlm_intent_create_client, ldlm_intent_getattr_server);
1434 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1435
1436 struct req_format RQF_LDLM_INTENT_UNLINK =
1437 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1438 ldlm_intent_unlink_client, ldlm_intent_server);
1439 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1440
1441 struct req_format RQF_LDLM_INTENT_GETXATTR =
1442 DEFINE_REQ_FMT0("LDLM_INTENT_GETXATTR",
1443 ldlm_intent_getxattr_client,
1444 ldlm_intent_getxattr_server);
1445 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETXATTR);
1446
1447 struct req_format RQF_MDS_CLOSE =
1448 DEFINE_REQ_FMT0("MDS_CLOSE",
1449 mdt_close_client, mds_last_unlink_server);
1450 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1451
1452 struct req_format RQF_MDS_RELEASE_CLOSE =
1453 DEFINE_REQ_FMT0("MDS_CLOSE",
1454 mdt_release_close_client, mds_last_unlink_server);
1455 EXPORT_SYMBOL(RQF_MDS_RELEASE_CLOSE);
1456
1457 struct req_format RQF_MDS_PIN =
1458 DEFINE_REQ_FMT0("MDS_PIN",
1459 mdt_body_capa, mdt_body_only);
1460 EXPORT_SYMBOL(RQF_MDS_PIN);
1461
1462 struct req_format RQF_MDS_UNPIN =
1463 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1464 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1465
1466 struct req_format RQF_MDS_DONE_WRITING =
1467 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1468 mdt_close_client, mdt_body_only);
1469 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1470
1471 struct req_format RQF_MDS_READPAGE =
1472 DEFINE_REQ_FMT0("MDS_READPAGE",
1473 mdt_body_capa, mdt_body_only);
1474 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1475
1476 struct req_format RQF_MDS_HSM_ACTION =
1477 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1478 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1479
1480 struct req_format RQF_MDS_HSM_PROGRESS =
1481 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1482 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1483
1484 struct req_format RQF_MDS_HSM_CT_REGISTER =
1485 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1486 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1487
1488 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1489 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", mdt_hsm_ct_unregister, empty);
1490 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1491
1492 struct req_format RQF_MDS_HSM_STATE_GET =
1493 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1494 mdt_body_capa, mdt_hsm_state_get_server);
1495 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1496
1497 struct req_format RQF_MDS_HSM_STATE_SET =
1498 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1499 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1500
1501 struct req_format RQF_MDS_HSM_REQUEST =
1502 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1503 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1504
1505 struct req_format RQF_MDS_SWAP_LAYOUTS =
1506 DEFINE_REQ_FMT0("MDS_SWAP_LAYOUTS",
1507 mdt_swap_layouts, empty);
1508 EXPORT_SYMBOL(RQF_MDS_SWAP_LAYOUTS);
1509
1510 /* This is for split */
1511 struct req_format RQF_MDS_WRITEPAGE =
1512 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1513 mdt_body_capa, mdt_body_only);
1514 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1515
1516 struct req_format RQF_MDS_IS_SUBDIR =
1517 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1518 mdt_body_only, mdt_body_only);
1519 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1520
1521 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1522 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1523 llog_origin_handle_create_client, llogd_body_only);
1524 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1525
1526 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1527 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1528 llogd_body_only, llogd_body_only);
1529 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1530
1531 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1532 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1533 llogd_body_only, llog_origin_handle_next_block_server);
1534 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1535
1536 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1537 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1538 llogd_body_only, llog_origin_handle_next_block_server);
1539 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1540
1541 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1542 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1543 llogd_body_only, llog_log_hdr_only);
1544 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1545
1546 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1547 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1548 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1549
1550 struct req_format RQF_CONNECT =
1551 DEFINE_REQ_FMT0("CONNECT", obd_connect_client, obd_connect_server);
1552 EXPORT_SYMBOL(RQF_CONNECT);
1553
1554 struct req_format RQF_OST_CONNECT =
1555 DEFINE_REQ_FMT0("OST_CONNECT",
1556 obd_connect_client, obd_connect_server);
1557 EXPORT_SYMBOL(RQF_OST_CONNECT);
1558
1559 struct req_format RQF_OST_DISCONNECT =
1560 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1561 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1562
1563 struct req_format RQF_OST_GETATTR =
1564 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1565 EXPORT_SYMBOL(RQF_OST_GETATTR);
1566
1567 struct req_format RQF_OST_SETATTR =
1568 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1569 EXPORT_SYMBOL(RQF_OST_SETATTR);
1570
1571 struct req_format RQF_OST_CREATE =
1572 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1573 EXPORT_SYMBOL(RQF_OST_CREATE);
1574
1575 struct req_format RQF_OST_PUNCH =
1576 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1577 EXPORT_SYMBOL(RQF_OST_PUNCH);
1578
1579 struct req_format RQF_OST_SYNC =
1580 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1581 EXPORT_SYMBOL(RQF_OST_SYNC);
1582
1583 struct req_format RQF_OST_DESTROY =
1584 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1585 EXPORT_SYMBOL(RQF_OST_DESTROY);
1586
1587 struct req_format RQF_OST_BRW_READ =
1588 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1589 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1590
1591 struct req_format RQF_OST_BRW_WRITE =
1592 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1593 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1594
1595 struct req_format RQF_OST_STATFS =
1596 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1597 EXPORT_SYMBOL(RQF_OST_STATFS);
1598
1599 struct req_format RQF_OST_SET_GRANT_INFO =
1600 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1601 ost_body_only);
1602 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1603
1604 struct req_format RQF_OST_GET_INFO_GENERIC =
1605 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1606 ost_get_info_generic_server);
1607 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1608
1609 struct req_format RQF_OST_GET_INFO_LAST_ID =
1610 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1611 ost_get_last_id_server);
1612 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1613
1614 struct req_format RQF_OST_GET_INFO_LAST_FID =
1615 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1616 ost_get_last_fid_server);
1617 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1618
1619 struct req_format RQF_OST_SET_INFO_LAST_FID =
1620 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1621 empty);
1622 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1623
1624 struct req_format RQF_OST_GET_INFO_FIEMAP =
1625 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1626 ost_get_fiemap_server);
1627 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1628
1629 #if !defined(__REQ_LAYOUT_USER__)
1630
1631 /* Convenience macro */
1632 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1633
1634 /**
1635 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1636 * field of RQFs and the \a rmf_offset field of RMFs.
1637 */
req_layout_init(void)1638 int req_layout_init(void)
1639 {
1640 int i;
1641 int j;
1642 int k;
1643 struct req_format *rf = NULL;
1644
1645 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1646 rf = req_formats[i];
1647 rf->rf_idx = i;
1648 for (j = 0; j < RCL_NR; ++j) {
1649 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1650 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1651 struct req_msg_field *field;
1652
1653 field = (typeof(field))rf->rf_fields[j].d[k];
1654 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1655 || field->rmf_size > 0);
1656 LASSERT(field->rmf_offset[i][j] == 0);
1657 /*
1658 * k + 1 to detect unused format/field
1659 * combinations.
1660 */
1661 field->rmf_offset[i][j] = k + 1;
1662 }
1663 }
1664 }
1665 return 0;
1666 }
1667 EXPORT_SYMBOL(req_layout_init);
1668
req_layout_fini(void)1669 void req_layout_fini(void)
1670 {
1671 }
1672 EXPORT_SYMBOL(req_layout_fini);
1673
1674 /**
1675 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1676 *
1677 * Actual/expected field sizes are set elsewhere in functions in this file:
1678 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1679 * req_capsule_msg_size(). The \a rc_area information is used by.
1680 * ptlrpc_request_set_replen().
1681 */
req_capsule_init_area(struct req_capsule * pill)1682 static void req_capsule_init_area(struct req_capsule *pill)
1683 {
1684 int i;
1685
1686 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1687 pill->rc_area[RCL_CLIENT][i] = -1;
1688 pill->rc_area[RCL_SERVER][i] = -1;
1689 }
1690 }
1691
1692 /**
1693 * Initialize a pill.
1694 *
1695 * The \a location indicates whether the caller is executing on the client side
1696 * (RCL_CLIENT) or server side (RCL_SERVER)..
1697 */
req_capsule_init(struct req_capsule * pill,struct ptlrpc_request * req,enum req_location location)1698 void req_capsule_init(struct req_capsule *pill,
1699 struct ptlrpc_request *req,
1700 enum req_location location)
1701 {
1702 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1703
1704 /*
1705 * Today all capsules are embedded in ptlrpc_request structs,
1706 * but just in case that ever isn't the case, we don't reach
1707 * into req unless req != NULL and pill is the one embedded in
1708 * the req.
1709 *
1710 * The req->rq_pill_init flag makes it safe to initialize a pill
1711 * twice, which might happen in the OST paths as a result of the
1712 * high-priority RPC queue getting peeked at before ost_handle()
1713 * handles an OST RPC.
1714 */
1715 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1716 return;
1717
1718 memset(pill, 0, sizeof(*pill));
1719 pill->rc_req = req;
1720 pill->rc_loc = location;
1721 req_capsule_init_area(pill);
1722
1723 if (req != NULL && pill == &req->rq_pill)
1724 req->rq_pill_init = 1;
1725 }
1726 EXPORT_SYMBOL(req_capsule_init);
1727
req_capsule_fini(struct req_capsule * pill)1728 void req_capsule_fini(struct req_capsule *pill)
1729 {
1730 }
1731 EXPORT_SYMBOL(req_capsule_fini);
1732
__req_format_is_sane(const struct req_format * fmt)1733 static int __req_format_is_sane(const struct req_format *fmt)
1734 {
1735 return
1736 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1737 req_formats[fmt->rf_idx] == fmt;
1738 }
1739
__req_msg(const struct req_capsule * pill,enum req_location loc)1740 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1741 enum req_location loc)
1742 {
1743 struct ptlrpc_request *req;
1744
1745 req = pill->rc_req;
1746 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1747 }
1748
1749 /**
1750 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1751 * (see req_capsule_extend()).
1752 */
req_capsule_set(struct req_capsule * pill,const struct req_format * fmt)1753 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1754 {
1755 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1756 LASSERT(__req_format_is_sane(fmt));
1757
1758 pill->rc_fmt = fmt;
1759 }
1760 EXPORT_SYMBOL(req_capsule_set);
1761
1762 /**
1763 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1764 * yet.
1765
1766 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1767 * variable-sized fields. The field sizes come from the declared \a rmf_size
1768 * field of a \a pill's \a rc_fmt's RMF's.
1769 */
req_capsule_filled_sizes(struct req_capsule * pill,enum req_location loc)1770 int req_capsule_filled_sizes(struct req_capsule *pill,
1771 enum req_location loc)
1772 {
1773 const struct req_format *fmt = pill->rc_fmt;
1774 int i;
1775
1776 LASSERT(fmt != NULL);
1777
1778 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1779 if (pill->rc_area[loc][i] == -1) {
1780 pill->rc_area[loc][i] =
1781 fmt->rf_fields[loc].d[i]->rmf_size;
1782 if (pill->rc_area[loc][i] == -1) {
1783 /*
1784 * Skip the following fields.
1785 *
1786 * If this LASSERT() trips then you're missing a
1787 * call to req_capsule_set_size().
1788 */
1789 LASSERT(loc != RCL_SERVER);
1790 break;
1791 }
1792 }
1793 }
1794 return i;
1795 }
1796 EXPORT_SYMBOL(req_capsule_filled_sizes);
1797
1798 /**
1799 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1800 *
1801 * This function uses the \a pill's \a rc_area as filled in by
1802 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1803 * this function).
1804 */
req_capsule_server_pack(struct req_capsule * pill)1805 int req_capsule_server_pack(struct req_capsule *pill)
1806 {
1807 const struct req_format *fmt;
1808 int count;
1809 int rc;
1810
1811 LASSERT(pill->rc_loc == RCL_SERVER);
1812 fmt = pill->rc_fmt;
1813 LASSERT(fmt != NULL);
1814
1815 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1816 rc = lustre_pack_reply(pill->rc_req, count,
1817 pill->rc_area[RCL_SERVER], NULL);
1818 if (rc != 0) {
1819 DEBUG_REQ(D_ERROR, pill->rc_req,
1820 "Cannot pack %d fields in format `%s': ",
1821 count, fmt->rf_name);
1822 }
1823 return rc;
1824 }
1825 EXPORT_SYMBOL(req_capsule_server_pack);
1826
1827 /**
1828 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1829 * corresponding to the given RMF (\a field).
1830 */
__req_capsule_offset(const struct req_capsule * pill,const struct req_msg_field * field,enum req_location loc)1831 static int __req_capsule_offset(const struct req_capsule *pill,
1832 const struct req_msg_field *field,
1833 enum req_location loc)
1834 {
1835 int offset;
1836
1837 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1838 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1839 pill->rc_fmt->rf_name,
1840 field->rmf_name, offset, loc);
1841 offset--;
1842
1843 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1844 return offset;
1845 }
1846
1847 /**
1848 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1849 * them if desired.
1850 */
1851 static
1852 void
swabber_dumper_helper(struct req_capsule * pill,const struct req_msg_field * field,enum req_location loc,int offset,void * value,int len,int dump,void (* swabber)(void *))1853 swabber_dumper_helper(struct req_capsule *pill,
1854 const struct req_msg_field *field,
1855 enum req_location loc,
1856 int offset,
1857 void *value, int len, int dump, void (*swabber)(void *))
1858 {
1859 void *p;
1860 int i;
1861 int n;
1862 int do_swab;
1863 int inout = loc == RCL_CLIENT;
1864
1865 swabber = swabber ?: field->rmf_swabber;
1866
1867 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1868 swabber != NULL && value != NULL)
1869 do_swab = 1;
1870 else
1871 do_swab = 0;
1872
1873 if (!field->rmf_dumper)
1874 dump = 0;
1875
1876 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1877 if (dump) {
1878 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1879 do_swab ? "unswabbed " : "", field->rmf_name);
1880 field->rmf_dumper(value);
1881 }
1882 if (!do_swab)
1883 return;
1884 swabber(value);
1885 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1886 if (dump) {
1887 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s follows\n",
1888 field->rmf_name);
1889 field->rmf_dumper(value);
1890 }
1891
1892 return;
1893 }
1894
1895 /*
1896 * We're swabbing an array; swabber() swabs a single array element, so
1897 * swab every element.
1898 */
1899 LASSERT((len % field->rmf_size) == 0);
1900 for (p = value, i = 0, n = len / field->rmf_size;
1901 i < n;
1902 i++, p += field->rmf_size) {
1903 if (dump) {
1904 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, element %d follows\n",
1905 do_swab ? "unswabbed " : "", field->rmf_name, i);
1906 field->rmf_dumper(p);
1907 }
1908 if (!do_swab)
1909 continue;
1910 swabber(p);
1911 if (dump) {
1912 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, element %d follows\n",
1913 field->rmf_name, i);
1914 field->rmf_dumper(value);
1915 }
1916 }
1917 if (do_swab)
1918 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1919 }
1920
1921 /**
1922 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1923 * corresponding to the given RMF (\a field).
1924 *
1925 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1926 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1927 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1928 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1929 * element of the array swabbed.
1930 */
__req_capsule_get(struct req_capsule * pill,const struct req_msg_field * field,enum req_location loc,void (* swabber)(void *),int dump)1931 static void *__req_capsule_get(struct req_capsule *pill,
1932 const struct req_msg_field *field,
1933 enum req_location loc,
1934 void (*swabber)(void *),
1935 int dump)
1936 {
1937 const struct req_format *fmt;
1938 struct lustre_msg *msg;
1939 void *value;
1940 int len;
1941 int offset;
1942
1943 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1944
1945 static const char *rcl_names[RCL_NR] = {
1946 [RCL_CLIENT] = "client",
1947 [RCL_SERVER] = "server"
1948 };
1949
1950 LASSERT(pill != NULL);
1951 LASSERT(pill != LP_POISON);
1952 fmt = pill->rc_fmt;
1953 LASSERT(fmt != NULL);
1954 LASSERT(fmt != LP_POISON);
1955 LASSERT(__req_format_is_sane(fmt));
1956
1957 offset = __req_capsule_offset(pill, field, loc);
1958
1959 msg = __req_msg(pill, loc);
1960 LASSERT(msg != NULL);
1961
1962 getter = (field->rmf_flags & RMF_F_STRING) ?
1963 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1964
1965 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1966 /*
1967 * We've already asserted that field->rmf_size > 0 in
1968 * req_layout_init().
1969 */
1970 len = lustre_msg_buflen(msg, offset);
1971 if ((len % field->rmf_size) != 0) {
1972 CERROR("%s: array field size mismatch %d modulo %d != 0 (%d)\n",
1973 field->rmf_name, len, field->rmf_size, loc);
1974 return NULL;
1975 }
1976 } else if (pill->rc_area[loc][offset] != -1) {
1977 len = pill->rc_area[loc][offset];
1978 } else {
1979 len = max(field->rmf_size, 0);
1980 }
1981 value = getter(msg, offset, len);
1982
1983 if (value == NULL) {
1984 DEBUG_REQ(D_ERROR, pill->rc_req,
1985 "Wrong buffer for field `%s' (%d of %d) in format `%s': %d vs. %d (%s)\n",
1986 field->rmf_name, offset, lustre_msg_bufcount(msg),
1987 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1988 rcl_names[loc]);
1989 } else {
1990 swabber_dumper_helper(pill, field, loc, offset, value, len,
1991 dump, swabber);
1992 }
1993
1994 return value;
1995 }
1996
1997 /**
1998 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1999 * buffer corresponding to the given RMF (\a field) of a \a pill.
2000 */
req_capsule_client_get(struct req_capsule * pill,const struct req_msg_field * field)2001 void *req_capsule_client_get(struct req_capsule *pill,
2002 const struct req_msg_field *field)
2003 {
2004 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2005 }
2006 EXPORT_SYMBOL(req_capsule_client_get);
2007
2008 /**
2009 * Same as req_capsule_client_get(), but with a \a swabber argument.
2010 *
2011 * Currently unused; will be removed when req_capsule_server_swab_get() is
2012 * unused too.
2013 */
req_capsule_client_swab_get(struct req_capsule * pill,const struct req_msg_field * field,void * swabber)2014 void *req_capsule_client_swab_get(struct req_capsule *pill,
2015 const struct req_msg_field *field,
2016 void *swabber)
2017 {
2018 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
2019 }
2020 EXPORT_SYMBOL(req_capsule_client_swab_get);
2021
2022 /**
2023 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
2024 *
2025 * First the \a pill's request \a field's size is set (\a rc_area) using
2026 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2027 * returned.
2028 */
req_capsule_client_sized_get(struct req_capsule * pill,const struct req_msg_field * field,int len)2029 void *req_capsule_client_sized_get(struct req_capsule *pill,
2030 const struct req_msg_field *field,
2031 int len)
2032 {
2033 req_capsule_set_size(pill, field, RCL_CLIENT, len);
2034 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2035 }
2036 EXPORT_SYMBOL(req_capsule_client_sized_get);
2037
2038 /**
2039 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
2040 * buffer corresponding to the given RMF (\a field) of a \a pill.
2041 */
req_capsule_server_get(struct req_capsule * pill,const struct req_msg_field * field)2042 void *req_capsule_server_get(struct req_capsule *pill,
2043 const struct req_msg_field *field)
2044 {
2045 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2046 }
2047 EXPORT_SYMBOL(req_capsule_server_get);
2048
2049 /**
2050 * Same as req_capsule_server_get(), but with a \a swabber argument.
2051 *
2052 * Ideally all swabbing should be done pursuant to RMF definitions, with no
2053 * swabbing done outside this capsule abstraction.
2054 */
req_capsule_server_swab_get(struct req_capsule * pill,const struct req_msg_field * field,void * swabber)2055 void *req_capsule_server_swab_get(struct req_capsule *pill,
2056 const struct req_msg_field *field,
2057 void *swabber)
2058 {
2059 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2060 }
2061 EXPORT_SYMBOL(req_capsule_server_swab_get);
2062
2063 /**
2064 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
2065 *
2066 * First the \a pill's request \a field's size is set (\a rc_area) using
2067 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2068 * returned.
2069 */
req_capsule_server_sized_get(struct req_capsule * pill,const struct req_msg_field * field,int len)2070 void *req_capsule_server_sized_get(struct req_capsule *pill,
2071 const struct req_msg_field *field,
2072 int len)
2073 {
2074 req_capsule_set_size(pill, field, RCL_SERVER, len);
2075 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2076 }
2077 EXPORT_SYMBOL(req_capsule_server_sized_get);
2078
req_capsule_server_sized_swab_get(struct req_capsule * pill,const struct req_msg_field * field,int len,void * swabber)2079 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2080 const struct req_msg_field *field,
2081 int len, void *swabber)
2082 {
2083 req_capsule_set_size(pill, field, RCL_SERVER, len);
2084 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2085 }
2086 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2087
2088 /**
2089 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2090 * field of the given \a pill.
2091 *
2092 * This function must be used when constructing variable sized fields of a
2093 * request or reply.
2094 */
req_capsule_set_size(struct req_capsule * pill,const struct req_msg_field * field,enum req_location loc,int size)2095 void req_capsule_set_size(struct req_capsule *pill,
2096 const struct req_msg_field *field,
2097 enum req_location loc, int size)
2098 {
2099 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2100
2101 if ((size != field->rmf_size) &&
2102 (field->rmf_size != -1) &&
2103 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2104 (size > 0)) {
2105 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2106 (size % field->rmf_size != 0)) {
2107 CERROR("%s: array field size mismatch %d %% %d != 0 (%d)\n",
2108 field->rmf_name, size, field->rmf_size, loc);
2109 LBUG();
2110 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2111 size < field->rmf_size) {
2112 CERROR("%s: field size mismatch %d != %d (%d)\n",
2113 field->rmf_name, size, field->rmf_size, loc);
2114 LBUG();
2115 }
2116 }
2117
2118 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2119 }
2120 EXPORT_SYMBOL(req_capsule_set_size);
2121
2122 /**
2123 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2124 * for the given \a pill's given \a field.
2125 *
2126 * NB: this function doesn't correspond with req_capsule_set_size(), which
2127 * actually sets the size in pill.rc_area[loc][offset], but this function
2128 * returns the message buflen[offset], maybe we should use another name.
2129 */
req_capsule_get_size(const struct req_capsule * pill,const struct req_msg_field * field,enum req_location loc)2130 int req_capsule_get_size(const struct req_capsule *pill,
2131 const struct req_msg_field *field,
2132 enum req_location loc)
2133 {
2134 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2135
2136 return lustre_msg_buflen(__req_msg(pill, loc),
2137 __req_capsule_offset(pill, field, loc));
2138 }
2139 EXPORT_SYMBOL(req_capsule_get_size);
2140
2141 /**
2142 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2143 * given \a pill's request or reply (\a loc) given the field size recorded in
2144 * the \a pill's rc_area.
2145 *
2146 * See also req_capsule_set_size().
2147 */
req_capsule_msg_size(struct req_capsule * pill,enum req_location loc)2148 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2149 {
2150 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2151 pill->rc_fmt->rf_fields[loc].nr,
2152 pill->rc_area[loc]);
2153 }
2154
2155 /**
2156 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2157 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2158 * PTLRPC request or reply given only an RQF (\a fmt).
2159 *
2160 * This function should not be used for formats which contain variable size
2161 * fields.
2162 */
req_capsule_fmt_size(__u32 magic,const struct req_format * fmt,enum req_location loc)2163 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2164 enum req_location loc)
2165 {
2166 int size, i = 0;
2167
2168 /*
2169 * This function should probably LASSERT() that fmt has no fields with
2170 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2171 * elements in the array there will ultimately be, but then, we could
2172 * assume that there will be at least one element, and that's just what
2173 * we do.
2174 */
2175 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2176 if (size < 0)
2177 return size;
2178
2179 for (; i < fmt->rf_fields[loc].nr; ++i)
2180 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2181 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2182 rmf_size);
2183 return size;
2184 }
2185
2186 /**
2187 * Changes the format of an RPC.
2188 *
2189 * The pill must already have been initialized, which means that it already has
2190 * a request format. The new format \a fmt must be an extension of the pill's
2191 * old format. Specifically: the new format must have as many request and reply
2192 * fields as the old one, and all fields shared by the old and new format must
2193 * be at least as large in the new format.
2194 *
2195 * The new format's fields may be of different "type" than the old format, but
2196 * only for fields that are "opaque" blobs: fields which have a) have no
2197 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2198 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2199 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2200 * according to the key field. When the value, according to the key, contains a
2201 * structure (or array thereof) to be swabbed, the format should be changed to
2202 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2203 * accordingly.
2204 */
req_capsule_extend(struct req_capsule * pill,const struct req_format * fmt)2205 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2206 {
2207 int i;
2208 int j;
2209
2210 const struct req_format *old;
2211
2212 LASSERT(pill->rc_fmt != NULL);
2213 LASSERT(__req_format_is_sane(fmt));
2214
2215 old = pill->rc_fmt;
2216 /*
2217 * Sanity checking...
2218 */
2219 for (i = 0; i < RCL_NR; ++i) {
2220 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2221 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2222 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2223
2224 /* "opaque" fields can be transmogrified */
2225 if (ofield->rmf_swabber == NULL &&
2226 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2227 (ofield->rmf_size == -1 ||
2228 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2229 continue;
2230 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2231 }
2232 /*
2233 * Last field in old format can be shorter than in new.
2234 */
2235 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2236 FMT_FIELD(old, i, j)->rmf_size);
2237 }
2238
2239 pill->rc_fmt = fmt;
2240 }
2241 EXPORT_SYMBOL(req_capsule_extend);
2242
2243 /**
2244 * This function returns a non-zero value if the given \a field is present in
2245 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2246 * returns 0.
2247 */
req_capsule_has_field(const struct req_capsule * pill,const struct req_msg_field * field,enum req_location loc)2248 int req_capsule_has_field(const struct req_capsule *pill,
2249 const struct req_msg_field *field,
2250 enum req_location loc)
2251 {
2252 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2253
2254 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2255 }
2256 EXPORT_SYMBOL(req_capsule_has_field);
2257
2258 /**
2259 * Returns a non-zero value if the given \a field is present in the given \a
2260 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2261 */
req_capsule_field_present(const struct req_capsule * pill,const struct req_msg_field * field,enum req_location loc)2262 static int req_capsule_field_present(const struct req_capsule *pill,
2263 const struct req_msg_field *field,
2264 enum req_location loc)
2265 {
2266 int offset;
2267
2268 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2269 LASSERT(req_capsule_has_field(pill, field, loc));
2270
2271 offset = __req_capsule_offset(pill, field, loc);
2272 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2273 }
2274
2275 /**
2276 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2277 * request or reply (\a loc).
2278 *
2279 * This is not the opposite of req_capsule_extend().
2280 */
req_capsule_shrink(struct req_capsule * pill,const struct req_msg_field * field,unsigned int newlen,enum req_location loc)2281 void req_capsule_shrink(struct req_capsule *pill,
2282 const struct req_msg_field *field,
2283 unsigned int newlen,
2284 enum req_location loc)
2285 {
2286 const struct req_format *fmt;
2287 struct lustre_msg *msg;
2288 int len;
2289 int offset;
2290
2291 fmt = pill->rc_fmt;
2292 LASSERT(fmt != NULL);
2293 LASSERT(__req_format_is_sane(fmt));
2294 LASSERT(req_capsule_has_field(pill, field, loc));
2295 LASSERT(req_capsule_field_present(pill, field, loc));
2296
2297 offset = __req_capsule_offset(pill, field, loc);
2298
2299 msg = __req_msg(pill, loc);
2300 len = lustre_msg_buflen(msg, offset);
2301 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2302 fmt->rf_name, field->rmf_name, len, newlen);
2303
2304 if (loc == RCL_CLIENT)
2305 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2306 1);
2307 else
2308 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2309 1);
2310 }
2311 EXPORT_SYMBOL(req_capsule_shrink);
2312
2313 /* __REQ_LAYOUT_USER__ */
2314 #endif
2315