Commit | Line | Data |
---|---|---|
d7e09d03 PT |
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 | |
6a5b99a4 | 18 | * http://www.gnu.org/licenses/gpl-2.0.html |
d7e09d03 | 19 | * |
d7e09d03 PT |
20 | * GPL HEADER END |
21 | */ | |
22 | /* | |
23 | * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. | |
24 | * Use is subject to license terms. | |
25 | * | |
1dc563a6 | 26 | * Copyright (c) 2011, 2015, Intel Corporation. |
d7e09d03 PT |
27 | */ |
28 | /* | |
29 | * This file is part of Lustre, http://www.lustre.org/ | |
30 | * Lustre is a trademark of Sun Microsystems, Inc. | |
31 | */ | |
32 | ||
33 | #define DEBUG_SUBSYSTEM S_ECHO | |
9fdaf8c0 | 34 | #include "../../include/linux/libcfs/libcfs.h" |
d7e09d03 | 35 | |
7f2d973a GKH |
36 | #include "../include/obd.h" |
37 | #include "../include/obd_support.h" | |
38 | #include "../include/obd_class.h" | |
39 | #include "../include/lustre_debug.h" | |
40 | #include "../include/lprocfs_status.h" | |
41 | #include "../include/cl_object.h" | |
7f2d973a GKH |
42 | #include "../include/lustre_fid.h" |
43 | #include "../include/lustre_acl.h" | |
8877d3bf | 44 | #include "../include/lustre/lustre_ioctl.h" |
7f2d973a | 45 | #include "../include/lustre_net.h" |
d7e09d03 PT |
46 | |
47 | #include "echo_internal.h" | |
48 | ||
49 | /** \defgroup echo_client Echo Client | |
50 | * @{ | |
51 | */ | |
52 | ||
53 | struct echo_device { | |
54 | struct cl_device ed_cl; | |
55 | struct echo_client_obd *ed_ec; | |
56 | ||
57 | struct cl_site ed_site_myself; | |
58 | struct cl_site *ed_site; | |
59 | struct lu_device *ed_next; | |
d7e09d03 PT |
60 | }; |
61 | ||
62 | struct echo_object { | |
63 | struct cl_object eo_cl; | |
64 | struct cl_object_header eo_hdr; | |
65 | ||
66 | struct echo_device *eo_dev; | |
67 | struct list_head eo_obj_chain; | |
68 | struct lov_stripe_md *eo_lsm; | |
69 | atomic_t eo_npages; | |
70 | int eo_deleted; | |
71 | }; | |
72 | ||
73 | struct echo_object_conf { | |
74 | struct cl_object_conf eoc_cl; | |
75 | struct lov_stripe_md **eoc_md; | |
76 | }; | |
77 | ||
78 | struct echo_page { | |
79 | struct cl_page_slice ep_cl; | |
80 | struct mutex ep_lock; | |
d7e09d03 PT |
81 | }; |
82 | ||
83 | struct echo_lock { | |
84 | struct cl_lock_slice el_cl; | |
85 | struct list_head el_chain; | |
86 | struct echo_object *el_object; | |
87 | __u64 el_cookie; | |
88 | atomic_t el_refcount; | |
89 | }; | |
90 | ||
d7e09d03 PT |
91 | static int echo_client_setup(const struct lu_env *env, |
92 | struct obd_device *obddev, | |
93 | struct lustre_cfg *lcfg); | |
94 | static int echo_client_cleanup(struct obd_device *obddev); | |
95 | ||
d7e09d03 PT |
96 | /** \defgroup echo_helpers Helper functions |
97 | * @{ | |
98 | */ | |
99 | static inline struct echo_device *cl2echo_dev(const struct cl_device *dev) | |
100 | { | |
101 | return container_of0(dev, struct echo_device, ed_cl); | |
102 | } | |
103 | ||
104 | static inline struct cl_device *echo_dev2cl(struct echo_device *d) | |
105 | { | |
106 | return &d->ed_cl; | |
107 | } | |
108 | ||
109 | static inline struct echo_device *obd2echo_dev(const struct obd_device *obd) | |
110 | { | |
111 | return cl2echo_dev(lu2cl_dev(obd->obd_lu_dev)); | |
112 | } | |
113 | ||
114 | static inline struct cl_object *echo_obj2cl(struct echo_object *eco) | |
115 | { | |
116 | return &eco->eo_cl; | |
117 | } | |
118 | ||
119 | static inline struct echo_object *cl2echo_obj(const struct cl_object *o) | |
120 | { | |
121 | return container_of(o, struct echo_object, eo_cl); | |
122 | } | |
123 | ||
124 | static inline struct echo_page *cl2echo_page(const struct cl_page_slice *s) | |
125 | { | |
126 | return container_of(s, struct echo_page, ep_cl); | |
127 | } | |
128 | ||
129 | static inline struct echo_lock *cl2echo_lock(const struct cl_lock_slice *s) | |
130 | { | |
131 | return container_of(s, struct echo_lock, el_cl); | |
132 | } | |
133 | ||
134 | static inline struct cl_lock *echo_lock2cl(const struct echo_lock *ecl) | |
135 | { | |
136 | return ecl->el_cl.cls_lock; | |
137 | } | |
138 | ||
139 | static struct lu_context_key echo_thread_key; | |
140 | static inline struct echo_thread_info *echo_env_info(const struct lu_env *env) | |
141 | { | |
142 | struct echo_thread_info *info; | |
ded9f908 | 143 | |
d7e09d03 | 144 | info = lu_context_key_get(&env->le_ctx, &echo_thread_key); |
7ae59eda | 145 | LASSERT(info); |
d7e09d03 PT |
146 | return info; |
147 | } | |
148 | ||
149 | static inline | |
150 | struct echo_object_conf *cl2echo_conf(const struct cl_object_conf *c) | |
151 | { | |
152 | return container_of(c, struct echo_object_conf, eoc_cl); | |
153 | } | |
154 | ||
155 | /** @} echo_helpers */ | |
156 | ||
157 | static struct echo_object *cl_echo_object_find(struct echo_device *d, | |
158 | struct lov_stripe_md **lsm); | |
159 | static int cl_echo_object_put(struct echo_object *eco); | |
21aef7d9 | 160 | static int cl_echo_object_brw(struct echo_object *eco, int rw, u64 offset, |
d7e09d03 PT |
161 | struct page **pages, int npages, int async); |
162 | ||
d7e09d03 PT |
163 | struct echo_thread_info { |
164 | struct echo_object_conf eti_conf; | |
165 | struct lustre_md eti_md; | |
166 | ||
167 | struct cl_2queue eti_queue; | |
168 | struct cl_io eti_io; | |
06563b56 | 169 | struct cl_lock eti_lock; |
d7e09d03 PT |
170 | struct lu_fid eti_fid; |
171 | struct lu_fid eti_fid2; | |
d7e09d03 PT |
172 | }; |
173 | ||
174 | /* No session used right now */ | |
175 | struct echo_session_info { | |
176 | unsigned long dummy; | |
177 | }; | |
178 | ||
179 | static struct kmem_cache *echo_lock_kmem; | |
180 | static struct kmem_cache *echo_object_kmem; | |
181 | static struct kmem_cache *echo_thread_kmem; | |
182 | static struct kmem_cache *echo_session_kmem; | |
d7e09d03 PT |
183 | |
184 | static struct lu_kmem_descr echo_caches[] = { | |
185 | { | |
186 | .ckd_cache = &echo_lock_kmem, | |
187 | .ckd_name = "echo_lock_kmem", | |
cb7e9f7b | 188 | .ckd_size = sizeof(struct echo_lock) |
d7e09d03 PT |
189 | }, |
190 | { | |
191 | .ckd_cache = &echo_object_kmem, | |
192 | .ckd_name = "echo_object_kmem", | |
cb7e9f7b | 193 | .ckd_size = sizeof(struct echo_object) |
d7e09d03 PT |
194 | }, |
195 | { | |
196 | .ckd_cache = &echo_thread_kmem, | |
197 | .ckd_name = "echo_thread_kmem", | |
cb7e9f7b | 198 | .ckd_size = sizeof(struct echo_thread_info) |
d7e09d03 PT |
199 | }, |
200 | { | |
201 | .ckd_cache = &echo_session_kmem, | |
202 | .ckd_name = "echo_session_kmem", | |
cb7e9f7b | 203 | .ckd_size = sizeof(struct echo_session_info) |
d7e09d03 | 204 | }, |
d7e09d03 PT |
205 | { |
206 | .ckd_cache = NULL | |
207 | } | |
208 | }; | |
209 | ||
210 | /** \defgroup echo_page Page operations | |
211 | * | |
212 | * Echo page operations. | |
213 | * | |
214 | * @{ | |
215 | */ | |
d7e09d03 PT |
216 | static int echo_page_own(const struct lu_env *env, |
217 | const struct cl_page_slice *slice, | |
218 | struct cl_io *io, int nonblock) | |
219 | { | |
220 | struct echo_page *ep = cl2echo_page(slice); | |
221 | ||
222 | if (!nonblock) | |
223 | mutex_lock(&ep->ep_lock); | |
224 | else if (!mutex_trylock(&ep->ep_lock)) | |
225 | return -EAGAIN; | |
226 | return 0; | |
227 | } | |
228 | ||
229 | static void echo_page_disown(const struct lu_env *env, | |
230 | const struct cl_page_slice *slice, | |
231 | struct cl_io *io) | |
232 | { | |
233 | struct echo_page *ep = cl2echo_page(slice); | |
234 | ||
235 | LASSERT(mutex_is_locked(&ep->ep_lock)); | |
236 | mutex_unlock(&ep->ep_lock); | |
237 | } | |
238 | ||
239 | static void echo_page_discard(const struct lu_env *env, | |
240 | const struct cl_page_slice *slice, | |
241 | struct cl_io *unused) | |
242 | { | |
243 | cl_page_delete(env, slice->cpl_page); | |
244 | } | |
245 | ||
246 | static int echo_page_is_vmlocked(const struct lu_env *env, | |
247 | const struct cl_page_slice *slice) | |
248 | { | |
249 | if (mutex_is_locked(&cl2echo_page(slice)->ep_lock)) | |
250 | return -EBUSY; | |
251 | return -ENODATA; | |
252 | } | |
253 | ||
254 | static void echo_page_completion(const struct lu_env *env, | |
255 | const struct cl_page_slice *slice, | |
256 | int ioret) | |
257 | { | |
7ae59eda | 258 | LASSERT(slice->cpl_page->cp_sync_io); |
d7e09d03 PT |
259 | } |
260 | ||
261 | static void echo_page_fini(const struct lu_env *env, | |
262 | struct cl_page_slice *slice) | |
263 | { | |
d7e09d03 | 264 | struct echo_object *eco = cl2echo_obj(slice->cpl_obj); |
d7e09d03 PT |
265 | |
266 | atomic_dec(&eco->eo_npages); | |
5f479924 | 267 | put_page(slice->cpl_page->cp_vmpage); |
d7e09d03 PT |
268 | } |
269 | ||
270 | static int echo_page_prep(const struct lu_env *env, | |
271 | const struct cl_page_slice *slice, | |
272 | struct cl_io *unused) | |
273 | { | |
274 | return 0; | |
275 | } | |
276 | ||
277 | static int echo_page_print(const struct lu_env *env, | |
278 | const struct cl_page_slice *slice, | |
279 | void *cookie, lu_printer_t printer) | |
280 | { | |
281 | struct echo_page *ep = cl2echo_page(slice); | |
282 | ||
283 | (*printer)(env, cookie, LUSTRE_ECHO_CLIENT_NAME"-page@%p %d vm@%p\n", | |
7addf402 JX |
284 | ep, mutex_is_locked(&ep->ep_lock), |
285 | slice->cpl_page->cp_vmpage); | |
d7e09d03 PT |
286 | return 0; |
287 | } | |
288 | ||
289 | static const struct cl_page_operations echo_page_ops = { | |
290 | .cpo_own = echo_page_own, | |
291 | .cpo_disown = echo_page_disown, | |
292 | .cpo_discard = echo_page_discard, | |
d7e09d03 PT |
293 | .cpo_fini = echo_page_fini, |
294 | .cpo_print = echo_page_print, | |
295 | .cpo_is_vmlocked = echo_page_is_vmlocked, | |
296 | .io = { | |
297 | [CRT_READ] = { | |
298 | .cpo_prep = echo_page_prep, | |
299 | .cpo_completion = echo_page_completion, | |
300 | }, | |
301 | [CRT_WRITE] = { | |
302 | .cpo_prep = echo_page_prep, | |
303 | .cpo_completion = echo_page_completion, | |
304 | } | |
305 | } | |
306 | }; | |
c9f6bb96 | 307 | |
d7e09d03 PT |
308 | /** @} echo_page */ |
309 | ||
310 | /** \defgroup echo_lock Locking | |
311 | * | |
312 | * echo lock operations | |
313 | * | |
314 | * @{ | |
315 | */ | |
316 | static void echo_lock_fini(const struct lu_env *env, | |
317 | struct cl_lock_slice *slice) | |
318 | { | |
319 | struct echo_lock *ecl = cl2echo_lock(slice); | |
320 | ||
321 | LASSERT(list_empty(&ecl->el_chain)); | |
50d30362 | 322 | kmem_cache_free(echo_lock_kmem, ecl); |
d7e09d03 PT |
323 | } |
324 | ||
d7e09d03 PT |
325 | static struct cl_lock_operations echo_lock_ops = { |
326 | .clo_fini = echo_lock_fini, | |
d7e09d03 PT |
327 | }; |
328 | ||
329 | /** @} echo_lock */ | |
330 | ||
331 | /** \defgroup echo_cl_ops cl_object operations | |
332 | * | |
333 | * operations for cl_object | |
334 | * | |
335 | * @{ | |
336 | */ | |
337 | static int echo_page_init(const struct lu_env *env, struct cl_object *obj, | |
7addf402 | 338 | struct cl_page *page, pgoff_t index) |
d7e09d03 PT |
339 | { |
340 | struct echo_page *ep = cl_object_page_slice(obj, page); | |
341 | struct echo_object *eco = cl2echo_obj(obj); | |
d7e09d03 | 342 | |
5f479924 | 343 | get_page(page->cp_vmpage); |
d7e09d03 | 344 | mutex_init(&ep->ep_lock); |
fd7444fe | 345 | cl_page_slice_add(page, &ep->ep_cl, obj, index, &echo_page_ops); |
d7e09d03 | 346 | atomic_inc(&eco->eo_npages); |
0a3bdb00 | 347 | return 0; |
d7e09d03 PT |
348 | } |
349 | ||
350 | static int echo_io_init(const struct lu_env *env, struct cl_object *obj, | |
351 | struct cl_io *io) | |
352 | { | |
353 | return 0; | |
354 | } | |
355 | ||
356 | static int echo_lock_init(const struct lu_env *env, | |
357 | struct cl_object *obj, struct cl_lock *lock, | |
358 | const struct cl_io *unused) | |
359 | { | |
360 | struct echo_lock *el; | |
d7e09d03 | 361 | |
38cf948d | 362 | el = kmem_cache_zalloc(echo_lock_kmem, GFP_NOFS); |
7ae59eda | 363 | if (el) { |
d7e09d03 PT |
364 | cl_lock_slice_add(lock, &el->el_cl, obj, &echo_lock_ops); |
365 | el->el_object = cl2echo_obj(obj); | |
366 | INIT_LIST_HEAD(&el->el_chain); | |
367 | atomic_set(&el->el_refcount, 0); | |
368 | } | |
7ae59eda | 369 | return !el ? -ENOMEM : 0; |
d7e09d03 PT |
370 | } |
371 | ||
372 | static int echo_conf_set(const struct lu_env *env, struct cl_object *obj, | |
373 | const struct cl_object_conf *conf) | |
374 | { | |
375 | return 0; | |
376 | } | |
377 | ||
378 | static const struct cl_object_operations echo_cl_obj_ops = { | |
379 | .coo_page_init = echo_page_init, | |
380 | .coo_lock_init = echo_lock_init, | |
381 | .coo_io_init = echo_io_init, | |
382 | .coo_conf_set = echo_conf_set | |
383 | }; | |
c9f6bb96 | 384 | |
d7e09d03 PT |
385 | /** @} echo_cl_ops */ |
386 | ||
387 | /** \defgroup echo_lu_ops lu_object operations | |
388 | * | |
389 | * operations for echo lu object. | |
390 | * | |
391 | * @{ | |
392 | */ | |
393 | static int echo_object_init(const struct lu_env *env, struct lu_object *obj, | |
394 | const struct lu_object_conf *conf) | |
395 | { | |
396 | struct echo_device *ed = cl2echo_dev(lu2cl_dev(obj->lo_dev)); | |
397 | struct echo_client_obd *ec = ed->ed_ec; | |
398 | struct echo_object *eco = cl2echo_obj(lu2cl(obj)); | |
5bd07d99 PT |
399 | const struct cl_object_conf *cconf; |
400 | struct echo_object_conf *econf; | |
d7e09d03 PT |
401 | |
402 | if (ed->ed_next) { | |
403 | struct lu_object *below; | |
404 | struct lu_device *under; | |
405 | ||
406 | under = ed->ed_next; | |
407 | below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, | |
408 | under); | |
7ae59eda | 409 | if (!below) |
0a3bdb00 | 410 | return -ENOMEM; |
d7e09d03 PT |
411 | lu_object_add(obj, below); |
412 | } | |
413 | ||
5bd07d99 PT |
414 | cconf = lu2cl_conf(conf); |
415 | econf = cl2echo_conf(cconf); | |
d7e09d03 | 416 | |
5bd07d99 PT |
417 | LASSERT(econf->eoc_md); |
418 | eco->eo_lsm = *econf->eoc_md; | |
419 | /* clear the lsm pointer so that it won't get freed. */ | |
420 | *econf->eoc_md = NULL; | |
d7e09d03 PT |
421 | |
422 | eco->eo_dev = ed; | |
423 | atomic_set(&eco->eo_npages, 0); | |
424 | cl_object_page_init(lu2cl(obj), sizeof(struct echo_page)); | |
425 | ||
426 | spin_lock(&ec->ec_lock); | |
427 | list_add_tail(&eco->eo_obj_chain, &ec->ec_objects); | |
428 | spin_unlock(&ec->ec_lock); | |
429 | ||
0a3bdb00 | 430 | return 0; |
d7e09d03 PT |
431 | } |
432 | ||
433 | /* taken from osc_unpackmd() */ | |
434 | static int echo_alloc_memmd(struct echo_device *ed, | |
435 | struct lov_stripe_md **lsmp) | |
436 | { | |
437 | int lsm_size; | |
438 | ||
d7e09d03 | 439 | /* If export is lov/osc then use their obd method */ |
7ae59eda | 440 | if (ed->ed_next) |
d7e09d03 PT |
441 | return obd_alloc_memmd(ed->ed_ec->ec_exp, lsmp); |
442 | /* OFD has no unpackmd method, do everything here */ | |
443 | lsm_size = lov_stripe_md_size(1); | |
444 | ||
7ae59eda | 445 | LASSERT(!*lsmp); |
c5b89520 | 446 | *lsmp = kzalloc(lsm_size, GFP_NOFS); |
efeb257d | 447 | if (!*lsmp) |
0a3bdb00 | 448 | return -ENOMEM; |
d7e09d03 | 449 | |
c5b89520 | 450 | (*lsmp)->lsm_oinfo[0] = kzalloc(sizeof(struct lov_oinfo), GFP_NOFS); |
efeb257d | 451 | if (!(*lsmp)->lsm_oinfo[0]) { |
c5b89520 | 452 | kfree(*lsmp); |
0a3bdb00 | 453 | return -ENOMEM; |
d7e09d03 PT |
454 | } |
455 | ||
456 | loi_init((*lsmp)->lsm_oinfo[0]); | |
457 | (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES; | |
458 | ostid_set_seq_echo(&(*lsmp)->lsm_oi); | |
459 | ||
0a3bdb00 | 460 | return lsm_size; |
d7e09d03 PT |
461 | } |
462 | ||
463 | static int echo_free_memmd(struct echo_device *ed, struct lov_stripe_md **lsmp) | |
464 | { | |
465 | int lsm_size; | |
466 | ||
d7e09d03 | 467 | /* If export is lov/osc then use their obd method */ |
7ae59eda | 468 | if (ed->ed_next) |
d7e09d03 PT |
469 | return obd_free_memmd(ed->ed_ec->ec_exp, lsmp); |
470 | /* OFD has no unpackmd method, do everything here */ | |
471 | lsm_size = lov_stripe_md_size(1); | |
472 | ||
c5b89520 JL |
473 | kfree((*lsmp)->lsm_oinfo[0]); |
474 | kfree(*lsmp); | |
d7e09d03 | 475 | *lsmp = NULL; |
0a3bdb00 | 476 | return 0; |
d7e09d03 PT |
477 | } |
478 | ||
479 | static void echo_object_free(const struct lu_env *env, struct lu_object *obj) | |
480 | { | |
481 | struct echo_object *eco = cl2echo_obj(lu2cl(obj)); | |
482 | struct echo_client_obd *ec = eco->eo_dev->ed_ec; | |
d7e09d03 PT |
483 | |
484 | LASSERT(atomic_read(&eco->eo_npages) == 0); | |
485 | ||
486 | spin_lock(&ec->ec_lock); | |
487 | list_del_init(&eco->eo_obj_chain); | |
488 | spin_unlock(&ec->ec_lock); | |
489 | ||
490 | lu_object_fini(obj); | |
491 | lu_object_header_fini(obj->lo_header); | |
492 | ||
493 | if (eco->eo_lsm) | |
494 | echo_free_memmd(eco->eo_dev, &eco->eo_lsm); | |
50d30362 | 495 | kmem_cache_free(echo_object_kmem, eco); |
d7e09d03 PT |
496 | } |
497 | ||
498 | static int echo_object_print(const struct lu_env *env, void *cookie, | |
35d6c026 | 499 | lu_printer_t p, const struct lu_object *o) |
d7e09d03 PT |
500 | { |
501 | struct echo_object *obj = cl2echo_obj(lu2cl(o)); | |
502 | ||
503 | return (*p)(env, cookie, "echoclient-object@%p", obj); | |
504 | } | |
505 | ||
506 | static const struct lu_object_operations echo_lu_obj_ops = { | |
507 | .loo_object_init = echo_object_init, | |
508 | .loo_object_delete = NULL, | |
509 | .loo_object_release = NULL, | |
510 | .loo_object_free = echo_object_free, | |
511 | .loo_object_print = echo_object_print, | |
512 | .loo_object_invariant = NULL | |
513 | }; | |
c9f6bb96 | 514 | |
d7e09d03 PT |
515 | /** @} echo_lu_ops */ |
516 | ||
517 | /** \defgroup echo_lu_dev_ops lu_device operations | |
518 | * | |
519 | * Operations for echo lu device. | |
520 | * | |
521 | * @{ | |
522 | */ | |
523 | static struct lu_object *echo_object_alloc(const struct lu_env *env, | |
524 | const struct lu_object_header *hdr, | |
525 | struct lu_device *dev) | |
526 | { | |
527 | struct echo_object *eco; | |
528 | struct lu_object *obj = NULL; | |
d7e09d03 PT |
529 | |
530 | /* we're the top dev. */ | |
7ae59eda | 531 | LASSERT(!hdr); |
38cf948d | 532 | eco = kmem_cache_zalloc(echo_object_kmem, GFP_NOFS); |
7ae59eda | 533 | if (eco) { |
d7e09d03 PT |
534 | struct cl_object_header *hdr = &eco->eo_hdr; |
535 | ||
536 | obj = &echo_obj2cl(eco)->co_lu; | |
537 | cl_object_header_init(hdr); | |
7addf402 JX |
538 | hdr->coh_page_bufsize = cfs_size_round(sizeof(struct cl_page)); |
539 | ||
d7e09d03 PT |
540 | lu_object_init(obj, &hdr->coh_lu, dev); |
541 | lu_object_add_top(&hdr->coh_lu, obj); | |
542 | ||
543 | eco->eo_cl.co_ops = &echo_cl_obj_ops; | |
544 | obj->lo_ops = &echo_lu_obj_ops; | |
545 | } | |
0a3bdb00 | 546 | return obj; |
d7e09d03 PT |
547 | } |
548 | ||
161106c5 | 549 | static const struct lu_device_operations echo_device_lu_ops = { |
d7e09d03 PT |
550 | .ldo_object_alloc = echo_object_alloc, |
551 | }; | |
552 | ||
553 | /** @} echo_lu_dev_ops */ | |
554 | ||
161106c5 | 555 | static const struct cl_device_operations echo_device_cl_ops = { |
d7e09d03 PT |
556 | }; |
557 | ||
558 | /** \defgroup echo_init Setup and teardown | |
559 | * | |
560 | * Init and fini functions for echo client. | |
561 | * | |
562 | * @{ | |
563 | */ | |
564 | static int echo_site_init(const struct lu_env *env, struct echo_device *ed) | |
565 | { | |
566 | struct cl_site *site = &ed->ed_site_myself; | |
567 | int rc; | |
568 | ||
569 | /* initialize site */ | |
570 | rc = cl_site_init(site, &ed->ed_cl); | |
571 | if (rc) { | |
c4f39553 | 572 | CERROR("Cannot initialize site for echo client(%d)\n", rc); |
d7e09d03 PT |
573 | return rc; |
574 | } | |
575 | ||
576 | rc = lu_site_init_finish(&site->cs_lu); | |
577 | if (rc) | |
578 | return rc; | |
579 | ||
580 | ed->ed_site = site; | |
581 | return 0; | |
582 | } | |
583 | ||
584 | static void echo_site_fini(const struct lu_env *env, struct echo_device *ed) | |
585 | { | |
586 | if (ed->ed_site) { | |
5bd07d99 | 587 | cl_site_fini(ed->ed_site); |
d7e09d03 PT |
588 | ed->ed_site = NULL; |
589 | } | |
590 | } | |
591 | ||
592 | static void *echo_thread_key_init(const struct lu_context *ctx, | |
35d6c026 | 593 | struct lu_context_key *key) |
d7e09d03 PT |
594 | { |
595 | struct echo_thread_info *info; | |
596 | ||
38cf948d | 597 | info = kmem_cache_zalloc(echo_thread_kmem, GFP_NOFS); |
7ae59eda | 598 | if (!info) |
d7e09d03 PT |
599 | info = ERR_PTR(-ENOMEM); |
600 | return info; | |
601 | } | |
602 | ||
603 | static void echo_thread_key_fini(const struct lu_context *ctx, | |
35d6c026 | 604 | struct lu_context_key *key, void *data) |
d7e09d03 PT |
605 | { |
606 | struct echo_thread_info *info = data; | |
ded9f908 | 607 | |
50d30362 | 608 | kmem_cache_free(echo_thread_kmem, info); |
d7e09d03 PT |
609 | } |
610 | ||
611 | static void echo_thread_key_exit(const struct lu_context *ctx, | |
35d6c026 | 612 | struct lu_context_key *key, void *data) |
d7e09d03 PT |
613 | { |
614 | } | |
615 | ||
616 | static struct lu_context_key echo_thread_key = { | |
617 | .lct_tags = LCT_CL_THREAD, | |
618 | .lct_init = echo_thread_key_init, | |
619 | .lct_fini = echo_thread_key_fini, | |
620 | .lct_exit = echo_thread_key_exit | |
621 | }; | |
622 | ||
623 | static void *echo_session_key_init(const struct lu_context *ctx, | |
35d6c026 | 624 | struct lu_context_key *key) |
d7e09d03 PT |
625 | { |
626 | struct echo_session_info *session; | |
627 | ||
38cf948d | 628 | session = kmem_cache_zalloc(echo_session_kmem, GFP_NOFS); |
7ae59eda | 629 | if (!session) |
d7e09d03 PT |
630 | session = ERR_PTR(-ENOMEM); |
631 | return session; | |
632 | } | |
633 | ||
634 | static void echo_session_key_fini(const struct lu_context *ctx, | |
35d6c026 | 635 | struct lu_context_key *key, void *data) |
d7e09d03 PT |
636 | { |
637 | struct echo_session_info *session = data; | |
ded9f908 | 638 | |
50d30362 | 639 | kmem_cache_free(echo_session_kmem, session); |
d7e09d03 PT |
640 | } |
641 | ||
642 | static void echo_session_key_exit(const struct lu_context *ctx, | |
35d6c026 | 643 | struct lu_context_key *key, void *data) |
d7e09d03 PT |
644 | { |
645 | } | |
646 | ||
647 | static struct lu_context_key echo_session_key = { | |
648 | .lct_tags = LCT_SESSION, | |
649 | .lct_init = echo_session_key_init, | |
650 | .lct_fini = echo_session_key_fini, | |
651 | .lct_exit = echo_session_key_exit | |
652 | }; | |
653 | ||
654 | LU_TYPE_INIT_FINI(echo, &echo_thread_key, &echo_session_key); | |
655 | ||
d7e09d03 PT |
656 | static struct lu_device *echo_device_alloc(const struct lu_env *env, |
657 | struct lu_device_type *t, | |
658 | struct lustre_cfg *cfg) | |
659 | { | |
660 | struct lu_device *next; | |
661 | struct echo_device *ed; | |
662 | struct cl_device *cd; | |
663 | struct obd_device *obd = NULL; /* to keep compiler happy */ | |
664 | struct obd_device *tgt; | |
665 | const char *tgt_type_name; | |
37264706 | 666 | int rc, err; |
d7e09d03 | 667 | |
c5b89520 | 668 | ed = kzalloc(sizeof(*ed), GFP_NOFS); |
efeb257d | 669 | if (!ed) { |
abb368ab JY |
670 | rc = -ENOMEM; |
671 | goto out; | |
672 | } | |
d7e09d03 | 673 | |
d7e09d03 PT |
674 | cd = &ed->ed_cl; |
675 | rc = cl_device_init(cd, t); | |
676 | if (rc) | |
37264706 | 677 | goto out_free; |
d7e09d03 PT |
678 | |
679 | cd->cd_lu_dev.ld_ops = &echo_device_lu_ops; | |
680 | cd->cd_ops = &echo_device_cl_ops; | |
681 | ||
d7e09d03 | 682 | obd = class_name2obd(lustre_cfg_string(cfg, 0)); |
7ae59eda OD |
683 | LASSERT(obd); |
684 | LASSERT(env); | |
d7e09d03 PT |
685 | |
686 | tgt = class_name2obd(lustre_cfg_string(cfg, 1)); | |
7ae59eda | 687 | if (!tgt) { |
d7e09d03 | 688 | CERROR("Can not find tgt device %s\n", |
35d6c026 | 689 | lustre_cfg_string(cfg, 1)); |
abb368ab | 690 | rc = -ENODEV; |
37264706 | 691 | goto out_device_fini; |
d7e09d03 PT |
692 | } |
693 | ||
694 | next = tgt->obd_lu_dev; | |
695 | if (!strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME)) { | |
5bd07d99 | 696 | CERROR("echo MDT client must be run on server\n"); |
abb368ab | 697 | rc = -EOPNOTSUPP; |
37264706 | 698 | goto out_device_fini; |
d7e09d03 | 699 | } |
5bd07d99 PT |
700 | |
701 | rc = echo_site_init(env, ed); | |
702 | if (rc) | |
37264706 | 703 | goto out_device_fini; |
d7e09d03 PT |
704 | |
705 | rc = echo_client_setup(env, obd, cfg); | |
706 | if (rc) | |
37264706 | 707 | goto out_site_fini; |
d7e09d03 PT |
708 | |
709 | ed->ed_ec = &obd->u.echo_client; | |
d7e09d03 | 710 | |
5bd07d99 | 711 | /* if echo client is to be stacked upon ost device, the next is |
35f0d1ab OD |
712 | * NULL since ost is not a clio device so far |
713 | */ | |
7ae59eda | 714 | if (next && !lu_device_is_cl(next)) |
5bd07d99 PT |
715 | next = NULL; |
716 | ||
717 | tgt_type_name = tgt->obd_type->typ_name; | |
7ae59eda OD |
718 | if (next) { |
719 | if (next->ld_site) { | |
abb368ab | 720 | rc = -EBUSY; |
37264706 | 721 | goto out_cleanup; |
abb368ab | 722 | } |
5bd07d99 PT |
723 | |
724 | next->ld_site = &ed->ed_site->cs_lu; | |
725 | rc = next->ld_type->ldt_ops->ldto_device_init(env, next, | |
726 | next->ld_type->ldt_name, | |
727 | NULL); | |
728 | if (rc) | |
37264706 | 729 | goto out_cleanup; |
5bd07d99 | 730 | |
d7e09d03 | 731 | } else { |
5bd07d99 | 732 | LASSERT(strcmp(tgt_type_name, LUSTRE_OST_NAME) == 0); |
d7e09d03 PT |
733 | } |
734 | ||
735 | ed->ed_next = next; | |
0a3bdb00 | 736 | return &cd->cd_lu_dev; |
d7e09d03 | 737 | |
37264706 CA |
738 | out_cleanup: |
739 | err = echo_client_cleanup(obd); | |
740 | if (err) | |
741 | CERROR("Cleanup obd device %s error(%d)\n", | |
742 | obd->obd_name, err); | |
743 | out_site_fini: | |
744 | echo_site_fini(env, ed); | |
745 | out_device_fini: | |
746 | cl_device_fini(&ed->ed_cl); | |
747 | out_free: | |
748 | kfree(ed); | |
749 | out: | |
fbe7c6c7 | 750 | return ERR_PTR(rc); |
d7e09d03 PT |
751 | } |
752 | ||
753 | static int echo_device_init(const struct lu_env *env, struct lu_device *d, | |
35d6c026 | 754 | const char *name, struct lu_device *next) |
d7e09d03 PT |
755 | { |
756 | LBUG(); | |
757 | return 0; | |
758 | } | |
759 | ||
760 | static struct lu_device *echo_device_fini(const struct lu_env *env, | |
761 | struct lu_device *d) | |
762 | { | |
763 | struct echo_device *ed = cl2echo_dev(lu2cl_dev(d)); | |
764 | struct lu_device *next = ed->ed_next; | |
765 | ||
5bd07d99 | 766 | while (next) |
d7e09d03 PT |
767 | next = next->ld_type->ldt_ops->ldto_device_fini(env, next); |
768 | return NULL; | |
769 | } | |
770 | ||
771 | static void echo_lock_release(const struct lu_env *env, | |
772 | struct echo_lock *ecl, | |
773 | int still_used) | |
774 | { | |
775 | struct cl_lock *clk = echo_lock2cl(ecl); | |
776 | ||
06563b56 | 777 | cl_lock_release(env, clk); |
d7e09d03 PT |
778 | } |
779 | ||
780 | static struct lu_device *echo_device_free(const struct lu_env *env, | |
781 | struct lu_device *d) | |
782 | { | |
783 | struct echo_device *ed = cl2echo_dev(lu2cl_dev(d)); | |
784 | struct echo_client_obd *ec = ed->ed_ec; | |
785 | struct echo_object *eco; | |
786 | struct lu_device *next = ed->ed_next; | |
787 | ||
788 | CDEBUG(D_INFO, "echo device:%p is going to be freed, next = %p\n", | |
789 | ed, next); | |
790 | ||
791 | lu_site_purge(env, &ed->ed_site->cs_lu, -1); | |
792 | ||
793 | /* check if there are objects still alive. | |
794 | * It shouldn't have any object because lu_site_purge would cleanup | |
795 | * all of cached objects. Anyway, probably the echo device is being | |
796 | * parallelly accessed. | |
797 | */ | |
798 | spin_lock(&ec->ec_lock); | |
799 | list_for_each_entry(eco, &ec->ec_objects, eo_obj_chain) | |
800 | eco->eo_deleted = 1; | |
801 | spin_unlock(&ec->ec_lock); | |
802 | ||
803 | /* purge again */ | |
804 | lu_site_purge(env, &ed->ed_site->cs_lu, -1); | |
805 | ||
806 | CDEBUG(D_INFO, | |
807 | "Waiting for the reference of echo object to be dropped\n"); | |
808 | ||
809 | /* Wait for the last reference to be dropped. */ | |
810 | spin_lock(&ec->ec_lock); | |
811 | while (!list_empty(&ec->ec_objects)) { | |
812 | spin_unlock(&ec->ec_lock); | |
2d00bd17 | 813 | CERROR("echo_client still has objects at cleanup time, wait for 1 second\n"); |
18fd5baa PT |
814 | set_current_state(TASK_UNINTERRUPTIBLE); |
815 | schedule_timeout(cfs_time_seconds(1)); | |
d7e09d03 PT |
816 | lu_site_purge(env, &ed->ed_site->cs_lu, -1); |
817 | spin_lock(&ec->ec_lock); | |
818 | } | |
819 | spin_unlock(&ec->ec_lock); | |
820 | ||
821 | LASSERT(list_empty(&ec->ec_locks)); | |
822 | ||
823 | CDEBUG(D_INFO, "No object exists, exiting...\n"); | |
824 | ||
825 | echo_client_cleanup(d->ld_obd); | |
5bd07d99 PT |
826 | |
827 | while (next) | |
d7e09d03 PT |
828 | next = next->ld_type->ldt_ops->ldto_device_free(env, next); |
829 | ||
830 | LASSERT(ed->ed_site == lu2cl_site(d->ld_site)); | |
831 | echo_site_fini(env, ed); | |
832 | cl_device_fini(&ed->ed_cl); | |
c5b89520 | 833 | kfree(ed); |
d7e09d03 PT |
834 | |
835 | return NULL; | |
836 | } | |
837 | ||
838 | static const struct lu_device_type_operations echo_device_type_ops = { | |
839 | .ldto_init = echo_type_init, | |
840 | .ldto_fini = echo_type_fini, | |
841 | ||
842 | .ldto_start = echo_type_start, | |
843 | .ldto_stop = echo_type_stop, | |
844 | ||
845 | .ldto_device_alloc = echo_device_alloc, | |
846 | .ldto_device_free = echo_device_free, | |
847 | .ldto_device_init = echo_device_init, | |
848 | .ldto_device_fini = echo_device_fini | |
849 | }; | |
850 | ||
851 | static struct lu_device_type echo_device_type = { | |
852 | .ldt_tags = LU_DEVICE_CL, | |
853 | .ldt_name = LUSTRE_ECHO_CLIENT_NAME, | |
854 | .ldt_ops = &echo_device_type_ops, | |
5bd07d99 | 855 | .ldt_ctx_tags = LCT_CL_THREAD, |
d7e09d03 | 856 | }; |
c9f6bb96 | 857 | |
d7e09d03 PT |
858 | /** @} echo_init */ |
859 | ||
860 | /** \defgroup echo_exports Exported operations | |
861 | * | |
862 | * exporting functions to echo client | |
863 | * | |
864 | * @{ | |
865 | */ | |
866 | ||
867 | /* Interfaces to echo client obd device */ | |
868 | static struct echo_object *cl_echo_object_find(struct echo_device *d, | |
869 | struct lov_stripe_md **lsmp) | |
870 | { | |
871 | struct lu_env *env; | |
872 | struct echo_thread_info *info; | |
873 | struct echo_object_conf *conf; | |
874 | struct lov_stripe_md *lsm; | |
875 | struct echo_object *eco; | |
876 | struct cl_object *obj; | |
877 | struct lu_fid *fid; | |
878 | int refcheck; | |
879 | int rc; | |
d7e09d03 PT |
880 | |
881 | LASSERT(lsmp); | |
882 | lsm = *lsmp; | |
883 | LASSERT(lsm); | |
8f405503 | 884 | LASSERTF(ostid_id(&lsm->lsm_oi) != 0, DOSTID"\n", POSTID(&lsm->lsm_oi)); |
885 | LASSERTF(ostid_seq(&lsm->lsm_oi) == FID_SEQ_ECHO, DOSTID"\n", | |
886 | POSTID(&lsm->lsm_oi)); | |
d7e09d03 PT |
887 | |
888 | /* Never return an object if the obd is to be freed. */ | |
889 | if (echo_dev2cl(d)->cd_lu_dev.ld_obd->obd_stopping) | |
0a3bdb00 | 890 | return ERR_PTR(-ENODEV); |
d7e09d03 PT |
891 | |
892 | env = cl_env_get(&refcheck); | |
893 | if (IS_ERR(env)) | |
0a3bdb00 | 894 | return (void *)env; |
d7e09d03 PT |
895 | |
896 | info = echo_env_info(env); | |
897 | conf = &info->eti_conf; | |
898 | if (d->ed_next) { | |
f833ea10 | 899 | struct lov_oinfo *oinfo = lsm->lsm_oinfo[0]; |
ded9f908 | 900 | |
f833ea10 JH |
901 | LASSERT(oinfo); |
902 | oinfo->loi_oi = lsm->lsm_oi; | |
903 | conf->eoc_cl.u.coc_oinfo = oinfo; | |
d7e09d03 PT |
904 | } |
905 | conf->eoc_md = lsmp; | |
906 | ||
907 | fid = &info->eti_fid; | |
908 | rc = ostid_to_fid(fid, &lsm->lsm_oi, 0); | |
abb368ab JY |
909 | if (rc != 0) { |
910 | eco = ERR_PTR(rc); | |
911 | goto out; | |
912 | } | |
d7e09d03 PT |
913 | |
914 | /* In the function below, .hs_keycmp resolves to | |
35f0d1ab OD |
915 | * lu_obj_hop_keycmp() |
916 | */ | |
d7e09d03 PT |
917 | /* coverity[overrun-buffer-val] */ |
918 | obj = cl_object_find(env, echo_dev2cl(d), fid, &conf->eoc_cl); | |
abb368ab JY |
919 | if (IS_ERR(obj)) { |
920 | eco = (void *)obj; | |
921 | goto out; | |
922 | } | |
d7e09d03 PT |
923 | |
924 | eco = cl2echo_obj(obj); | |
925 | if (eco->eo_deleted) { | |
926 | cl_object_put(env, obj); | |
927 | eco = ERR_PTR(-EAGAIN); | |
928 | } | |
929 | ||
930 | out: | |
931 | cl_env_put(env, &refcheck); | |
0a3bdb00 | 932 | return eco; |
d7e09d03 PT |
933 | } |
934 | ||
935 | static int cl_echo_object_put(struct echo_object *eco) | |
936 | { | |
937 | struct lu_env *env; | |
938 | struct cl_object *obj = echo_obj2cl(eco); | |
939 | int refcheck; | |
d7e09d03 PT |
940 | |
941 | env = cl_env_get(&refcheck); | |
942 | if (IS_ERR(env)) | |
0a3bdb00 | 943 | return PTR_ERR(env); |
d7e09d03 PT |
944 | |
945 | /* an external function to kill an object? */ | |
946 | if (eco->eo_deleted) { | |
947 | struct lu_object_header *loh = obj->co_lu.lo_header; | |
ded9f908 | 948 | |
d7e09d03 PT |
949 | LASSERT(&eco->eo_hdr == luh2coh(loh)); |
950 | set_bit(LU_OBJECT_HEARD_BANSHEE, &loh->loh_flags); | |
951 | } | |
952 | ||
953 | cl_object_put(env, obj); | |
954 | cl_env_put(env, &refcheck); | |
0a3bdb00 | 955 | return 0; |
d7e09d03 PT |
956 | } |
957 | ||
958 | static int cl_echo_enqueue0(struct lu_env *env, struct echo_object *eco, | |
21aef7d9 | 959 | u64 start, u64 end, int mode, |
d841438a | 960 | __u64 *cookie, __u32 enqflags) |
d7e09d03 PT |
961 | { |
962 | struct cl_io *io; | |
963 | struct cl_lock *lck; | |
964 | struct cl_object *obj; | |
965 | struct cl_lock_descr *descr; | |
966 | struct echo_thread_info *info; | |
967 | int rc = -ENOMEM; | |
d7e09d03 PT |
968 | |
969 | info = echo_env_info(env); | |
970 | io = &info->eti_io; | |
06563b56 | 971 | lck = &info->eti_lock; |
d7e09d03 PT |
972 | obj = echo_obj2cl(eco); |
973 | ||
06563b56 JX |
974 | memset(lck, 0, sizeof(*lck)); |
975 | descr = &lck->cll_descr; | |
d7e09d03 PT |
976 | descr->cld_obj = obj; |
977 | descr->cld_start = cl_index(obj, start); | |
978 | descr->cld_end = cl_index(obj, end); | |
979 | descr->cld_mode = mode == LCK_PW ? CLM_WRITE : CLM_READ; | |
980 | descr->cld_enq_flags = enqflags; | |
981 | io->ci_obj = obj; | |
982 | ||
06563b56 JX |
983 | rc = cl_lock_request(env, io, lck); |
984 | if (rc == 0) { | |
d7e09d03 PT |
985 | struct echo_client_obd *ec = eco->eo_dev->ed_ec; |
986 | struct echo_lock *el; | |
987 | ||
06563b56 JX |
988 | el = cl2echo_lock(cl_lock_at(lck, &echo_device_type)); |
989 | spin_lock(&ec->ec_lock); | |
990 | if (list_empty(&el->el_chain)) { | |
991 | list_add(&el->el_chain, &ec->ec_locks); | |
992 | el->el_cookie = ++ec->ec_unique; | |
d7e09d03 | 993 | } |
06563b56 JX |
994 | atomic_inc(&el->el_refcount); |
995 | *cookie = el->el_cookie; | |
996 | spin_unlock(&ec->ec_lock); | |
d7e09d03 | 997 | } |
0a3bdb00 | 998 | return rc; |
d7e09d03 PT |
999 | } |
1000 | ||
d7e09d03 PT |
1001 | static int cl_echo_cancel0(struct lu_env *env, struct echo_device *ed, |
1002 | __u64 cookie) | |
1003 | { | |
1004 | struct echo_client_obd *ec = ed->ed_ec; | |
1005 | struct echo_lock *ecl = NULL; | |
1006 | struct list_head *el; | |
1007 | int found = 0, still_used = 0; | |
d7e09d03 | 1008 | |
d7e09d03 | 1009 | spin_lock(&ec->ec_lock); |
cb7e9f7b DU |
1010 | list_for_each(el, &ec->ec_locks) { |
1011 | ecl = list_entry(el, struct echo_lock, el_chain); | |
55f5a824 | 1012 | CDEBUG(D_INFO, "ecl: %p, cookie: %#llx\n", ecl, ecl->el_cookie); |
d7e09d03 PT |
1013 | found = (ecl->el_cookie == cookie); |
1014 | if (found) { | |
1015 | if (atomic_dec_and_test(&ecl->el_refcount)) | |
1016 | list_del_init(&ecl->el_chain); | |
1017 | else | |
1018 | still_used = 1; | |
1019 | break; | |
1020 | } | |
1021 | } | |
1022 | spin_unlock(&ec->ec_lock); | |
1023 | ||
1024 | if (!found) | |
0a3bdb00 | 1025 | return -ENOENT; |
d7e09d03 PT |
1026 | |
1027 | echo_lock_release(env, ecl, still_used); | |
0a3bdb00 | 1028 | return 0; |
d7e09d03 PT |
1029 | } |
1030 | ||
77605e41 JX |
1031 | static void echo_commit_callback(const struct lu_env *env, struct cl_io *io, |
1032 | struct cl_page *page) | |
d7e09d03 | 1033 | { |
77605e41 JX |
1034 | struct echo_thread_info *info; |
1035 | struct cl_2queue *queue; | |
d7e09d03 | 1036 | |
77605e41 JX |
1037 | info = echo_env_info(env); |
1038 | LASSERT(io == &info->eti_io); | |
ded9f908 | 1039 | |
77605e41 JX |
1040 | queue = &info->eti_queue; |
1041 | cl_page_list_add(&queue->c2_qout, page); | |
d7e09d03 PT |
1042 | } |
1043 | ||
21aef7d9 | 1044 | static int cl_echo_object_brw(struct echo_object *eco, int rw, u64 offset, |
d7e09d03 PT |
1045 | struct page **pages, int npages, int async) |
1046 | { | |
1047 | struct lu_env *env; | |
1048 | struct echo_thread_info *info; | |
1049 | struct cl_object *obj = echo_obj2cl(eco); | |
1050 | struct echo_device *ed = eco->eo_dev; | |
1051 | struct cl_2queue *queue; | |
1052 | struct cl_io *io; | |
1053 | struct cl_page *clp; | |
1054 | struct lustre_handle lh = { 0 }; | |
1055 | int page_size = cl_page_size(obj); | |
1056 | int refcheck; | |
1057 | int rc; | |
1058 | int i; | |
d7e09d03 | 1059 | |
616387e8 | 1060 | LASSERT((offset & ~PAGE_MASK) == 0); |
7ae59eda | 1061 | LASSERT(ed->ed_next); |
d7e09d03 PT |
1062 | env = cl_env_get(&refcheck); |
1063 | if (IS_ERR(env)) | |
0a3bdb00 | 1064 | return PTR_ERR(env); |
d7e09d03 PT |
1065 | |
1066 | info = echo_env_info(env); | |
1067 | io = &info->eti_io; | |
1068 | queue = &info->eti_queue; | |
1069 | ||
1070 | cl_2queue_init(queue); | |
1071 | ||
1072 | io->ci_ignore_layout = 1; | |
1073 | rc = cl_io_init(env, io, CIT_MISC, obj); | |
1074 | if (rc < 0) | |
abb368ab | 1075 | goto out; |
d7e09d03 PT |
1076 | LASSERT(rc == 0); |
1077 | ||
d7e09d03 | 1078 | rc = cl_echo_enqueue0(env, eco, offset, |
09cbfeaf | 1079 | offset + npages * PAGE_SIZE - 1, |
d7e09d03 PT |
1080 | rw == READ ? LCK_PR : LCK_PW, &lh.cookie, |
1081 | CEF_NEVER); | |
1082 | if (rc < 0) | |
abb368ab | 1083 | goto error_lock; |
d7e09d03 PT |
1084 | |
1085 | for (i = 0; i < npages; i++) { | |
1086 | LASSERT(pages[i]); | |
1087 | clp = cl_page_find(env, obj, cl_index(obj, offset), | |
1088 | pages[i], CPT_TRANSIENT); | |
1089 | if (IS_ERR(clp)) { | |
1090 | rc = PTR_ERR(clp); | |
1091 | break; | |
1092 | } | |
1093 | LASSERT(clp->cp_type == CPT_TRANSIENT); | |
1094 | ||
1095 | rc = cl_page_own(env, io, clp); | |
1096 | if (rc) { | |
1097 | LASSERT(clp->cp_state == CPS_FREEING); | |
1098 | cl_page_put(env, clp); | |
1099 | break; | |
1100 | } | |
53f1a127 SB |
1101 | /* |
1102 | * Add a page to the incoming page list of 2-queue. | |
1103 | */ | |
1104 | cl_page_list_add(&queue->c2_qin, clp); | |
d7e09d03 PT |
1105 | |
1106 | /* drop the reference count for cl_page_find, so that the page | |
35f0d1ab OD |
1107 | * will be freed in cl_2queue_fini. |
1108 | */ | |
d7e09d03 PT |
1109 | cl_page_put(env, clp); |
1110 | cl_page_clip(env, clp, 0, page_size); | |
1111 | ||
1112 | offset += page_size; | |
1113 | } | |
1114 | ||
1115 | if (rc == 0) { | |
1116 | enum cl_req_type typ = rw == READ ? CRT_READ : CRT_WRITE; | |
1117 | ||
1118 | async = async && (typ == CRT_WRITE); | |
1119 | if (async) | |
77605e41 JX |
1120 | rc = cl_io_commit_async(env, io, &queue->c2_qin, |
1121 | 0, PAGE_SIZE, | |
1122 | echo_commit_callback); | |
d7e09d03 PT |
1123 | else |
1124 | rc = cl_io_submit_sync(env, io, typ, queue, 0); | |
1125 | CDEBUG(D_INFO, "echo_client %s write returns %d\n", | |
1126 | async ? "async" : "sync", rc); | |
1127 | } | |
1128 | ||
1129 | cl_echo_cancel0(env, ed, lh.cookie); | |
d7e09d03 PT |
1130 | error_lock: |
1131 | cl_2queue_discard(env, io, queue); | |
1132 | cl_2queue_disown(env, io, queue); | |
1133 | cl_2queue_fini(env, queue); | |
1134 | cl_io_fini(env, io); | |
1135 | out: | |
1136 | cl_env_put(env, &refcheck); | |
1137 | return rc; | |
1138 | } | |
c9f6bb96 | 1139 | |
d7e09d03 PT |
1140 | /** @} echo_exports */ |
1141 | ||
21aef7d9 | 1142 | static u64 last_object_id; |
d7e09d03 | 1143 | |
d7e09d03 | 1144 | static int echo_create_object(const struct lu_env *env, struct echo_device *ed, |
f833ea10 | 1145 | struct obdo *oa, struct obd_trans_info *oti) |
d7e09d03 PT |
1146 | { |
1147 | struct echo_object *eco; | |
1148 | struct echo_client_obd *ec = ed->ed_ec; | |
1149 | struct lov_stripe_md *lsm = NULL; | |
1150 | int rc; | |
1151 | int created = 0; | |
d7e09d03 | 1152 | |
01de911e OD |
1153 | if (!(oa->o_valid & OBD_MD_FLID) || |
1154 | !(oa->o_valid & OBD_MD_FLGROUP) || | |
1155 | !fid_seq_is_echo(ostid_seq(&oa->o_oi))) { | |
1156 | CERROR("invalid oid " DOSTID "\n", POSTID(&oa->o_oi)); | |
0a3bdb00 | 1157 | return -EINVAL; |
d7e09d03 PT |
1158 | } |
1159 | ||
1160 | rc = echo_alloc_memmd(ed, &lsm); | |
1161 | if (rc < 0) { | |
1162 | CERROR("Cannot allocate md: rc = %d\n", rc); | |
abb368ab | 1163 | goto failed; |
d7e09d03 PT |
1164 | } |
1165 | ||
f833ea10 | 1166 | /* setup object ID here */ |
61ece0e6 | 1167 | lsm->lsm_oi = oa->o_oi; |
d7e09d03 PT |
1168 | |
1169 | if (ostid_id(&lsm->lsm_oi) == 0) | |
1170 | ostid_set_id(&lsm->lsm_oi, ++last_object_id); | |
1171 | ||
f833ea10 JH |
1172 | rc = obd_create(env, ec->ec_exp, oa, &lsm, oti); |
1173 | if (rc != 0) { | |
1174 | CERROR("Cannot create objects: rc = %d\n", rc); | |
1175 | goto failed; | |
d7e09d03 | 1176 | } |
f833ea10 | 1177 | created = 1; |
d7e09d03 PT |
1178 | |
1179 | /* See what object ID we were given */ | |
1180 | oa->o_oi = lsm->lsm_oi; | |
1181 | oa->o_valid |= OBD_MD_FLID; | |
1182 | ||
1183 | eco = cl_echo_object_find(ed, &lsm); | |
abb368ab JY |
1184 | if (IS_ERR(eco)) { |
1185 | rc = PTR_ERR(eco); | |
1186 | goto failed; | |
1187 | } | |
d7e09d03 PT |
1188 | cl_echo_object_put(eco); |
1189 | ||
1190 | CDEBUG(D_INFO, "oa oid "DOSTID"\n", POSTID(&oa->o_oi)); | |
d7e09d03 PT |
1191 | |
1192 | failed: | |
1193 | if (created && rc) | |
ef2e0f55 | 1194 | obd_destroy(env, ec->ec_exp, oa, lsm, oti, NULL); |
d7e09d03 PT |
1195 | if (lsm) |
1196 | echo_free_memmd(ed, &lsm); | |
1197 | if (rc) | |
1198 | CERROR("create object failed with: rc = %d\n", rc); | |
fbe7c6c7 | 1199 | return rc; |
d7e09d03 PT |
1200 | } |
1201 | ||
1202 | static int echo_get_object(struct echo_object **ecop, struct echo_device *ed, | |
1203 | struct obdo *oa) | |
1204 | { | |
1205 | struct lov_stripe_md *lsm = NULL; | |
1206 | struct echo_object *eco; | |
1207 | int rc; | |
d7e09d03 PT |
1208 | |
1209 | if ((oa->o_valid & OBD_MD_FLID) == 0 || ostid_id(&oa->o_oi) == 0) { | |
1210 | /* disallow use of object id 0 */ | |
d841438a | 1211 | CERROR("No valid oid\n"); |
0a3bdb00 | 1212 | return -EINVAL; |
d7e09d03 PT |
1213 | } |
1214 | ||
1215 | rc = echo_alloc_memmd(ed, &lsm); | |
1216 | if (rc < 0) | |
0a3bdb00 | 1217 | return rc; |
d7e09d03 PT |
1218 | |
1219 | lsm->lsm_oi = oa->o_oi; | |
1220 | if (!(oa->o_valid & OBD_MD_FLGROUP)) | |
1221 | ostid_set_seq_echo(&lsm->lsm_oi); | |
1222 | ||
1223 | rc = 0; | |
1224 | eco = cl_echo_object_find(ed, &lsm); | |
1225 | if (!IS_ERR(eco)) | |
1226 | *ecop = eco; | |
1227 | else | |
1228 | rc = PTR_ERR(eco); | |
1229 | if (lsm) | |
1230 | echo_free_memmd(ed, &lsm); | |
0a3bdb00 | 1231 | return rc; |
d7e09d03 PT |
1232 | } |
1233 | ||
1234 | static void echo_put_object(struct echo_object *eco) | |
1235 | { | |
19b2056f JN |
1236 | int rc; |
1237 | ||
1238 | rc = cl_echo_object_put(eco); | |
1239 | if (rc) | |
1240 | CERROR("%s: echo client drop an object failed: rc = %d\n", | |
1241 | eco->eo_dev->ed_ec->ec_exp->exp_obd->obd_name, rc); | |
d7e09d03 PT |
1242 | } |
1243 | ||
1244 | static void | |
f833ea10 | 1245 | echo_client_page_debug_setup(struct page *page, int rw, u64 id, |
21aef7d9 | 1246 | u64 offset, u64 count) |
d7e09d03 PT |
1247 | { |
1248 | char *addr; | |
21aef7d9 OD |
1249 | u64 stripe_off; |
1250 | u64 stripe_id; | |
d7e09d03 PT |
1251 | int delta; |
1252 | ||
1253 | /* no partial pages on the client */ | |
09cbfeaf | 1254 | LASSERT(count == PAGE_SIZE); |
d7e09d03 PT |
1255 | |
1256 | addr = kmap(page); | |
1257 | ||
09cbfeaf | 1258 | for (delta = 0; delta < PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) { |
d7e09d03 PT |
1259 | if (rw == OBD_BRW_WRITE) { |
1260 | stripe_off = offset + delta; | |
1261 | stripe_id = id; | |
d7e09d03 PT |
1262 | } else { |
1263 | stripe_off = 0xdeadbeef00c0ffeeULL; | |
1264 | stripe_id = 0xdeadbeef00c0ffeeULL; | |
1265 | } | |
1266 | block_debug_setup(addr + delta, OBD_ECHO_BLOCK_SIZE, | |
1267 | stripe_off, stripe_id); | |
1268 | } | |
1269 | ||
1270 | kunmap(page); | |
1271 | } | |
1272 | ||
f833ea10 | 1273 | static int echo_client_page_debug_check(struct page *page, u64 id, |
21aef7d9 | 1274 | u64 offset, u64 count) |
d7e09d03 | 1275 | { |
21aef7d9 OD |
1276 | u64 stripe_off; |
1277 | u64 stripe_id; | |
d7e09d03 PT |
1278 | char *addr; |
1279 | int delta; | |
1280 | int rc; | |
1281 | int rc2; | |
1282 | ||
1283 | /* no partial pages on the client */ | |
09cbfeaf | 1284 | LASSERT(count == PAGE_SIZE); |
d7e09d03 PT |
1285 | |
1286 | addr = kmap(page); | |
1287 | ||
09cbfeaf | 1288 | for (rc = delta = 0; delta < PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) { |
d7e09d03 PT |
1289 | stripe_off = offset + delta; |
1290 | stripe_id = id; | |
d7e09d03 PT |
1291 | |
1292 | rc2 = block_debug_check("test_brw", | |
1293 | addr + delta, OBD_ECHO_BLOCK_SIZE, | |
1294 | stripe_off, stripe_id); | |
1295 | if (rc2 != 0) { | |
d841438a | 1296 | CERROR("Error in echo object %#llx\n", id); |
d7e09d03 PT |
1297 | rc = rc2; |
1298 | } | |
1299 | } | |
1300 | ||
1301 | kunmap(page); | |
1302 | return rc; | |
1303 | } | |
1304 | ||
1305 | static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa, | |
21aef7d9 OD |
1306 | struct echo_object *eco, u64 offset, |
1307 | u64 count, int async, | |
d7e09d03 PT |
1308 | struct obd_trans_info *oti) |
1309 | { | |
21aef7d9 | 1310 | u32 npages; |
d7e09d03 PT |
1311 | struct brw_page *pga; |
1312 | struct brw_page *pgp; | |
1313 | struct page **pages; | |
21aef7d9 | 1314 | u64 off; |
d7e09d03 PT |
1315 | int i; |
1316 | int rc; | |
1317 | int verify; | |
cad7aa13 | 1318 | gfp_t gfp_mask; |
d7e09d03 | 1319 | int brw_flags = 0; |
d7e09d03 PT |
1320 | |
1321 | verify = (ostid_id(&oa->o_oi) != ECHO_PERSISTENT_OBJID && | |
1322 | (oa->o_valid & OBD_MD_FLFLAGS) != 0 && | |
1323 | (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0); | |
1324 | ||
40113370 | 1325 | gfp_mask = ((ostid_id(&oa->o_oi) & 2) == 0) ? GFP_KERNEL : GFP_HIGHUSER; |
d7e09d03 PT |
1326 | |
1327 | LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ); | |
d7e09d03 PT |
1328 | |
1329 | if (count <= 0 || | |
616387e8 | 1330 | (count & (~PAGE_MASK)) != 0) |
0a3bdb00 | 1331 | return -EINVAL; |
d7e09d03 PT |
1332 | |
1333 | /* XXX think again with misaligned I/O */ | |
09cbfeaf | 1334 | npages = count >> PAGE_SHIFT; |
d7e09d03 PT |
1335 | |
1336 | if (rw == OBD_BRW_WRITE) | |
1337 | brw_flags = OBD_BRW_ASYNC; | |
1338 | ||
c5b89520 | 1339 | pga = kcalloc(npages, sizeof(*pga), GFP_NOFS); |
7ae59eda | 1340 | if (!pga) |
0a3bdb00 | 1341 | return -ENOMEM; |
d7e09d03 | 1342 | |
c5b89520 | 1343 | pages = kcalloc(npages, sizeof(*pages), GFP_NOFS); |
7ae59eda | 1344 | if (!pages) { |
c5b89520 | 1345 | kfree(pga); |
0a3bdb00 | 1346 | return -ENOMEM; |
d7e09d03 PT |
1347 | } |
1348 | ||
1349 | for (i = 0, pgp = pga, off = offset; | |
1350 | i < npages; | |
09cbfeaf | 1351 | i++, pgp++, off += PAGE_SIZE) { |
7ae59eda | 1352 | LASSERT(!pgp->pg); /* for cleanup */ |
d7e09d03 PT |
1353 | |
1354 | rc = -ENOMEM; | |
0c52e423 | 1355 | pgp->pg = alloc_page(gfp_mask); |
7ae59eda | 1356 | if (!pgp->pg) |
d7e09d03 PT |
1357 | goto out; |
1358 | ||
1359 | pages[i] = pgp->pg; | |
09cbfeaf | 1360 | pgp->count = PAGE_SIZE; |
d7e09d03 PT |
1361 | pgp->off = off; |
1362 | pgp->flag = brw_flags; | |
1363 | ||
1364 | if (verify) | |
f833ea10 | 1365 | echo_client_page_debug_setup(pgp->pg, rw, |
d7e09d03 PT |
1366 | ostid_id(&oa->o_oi), off, |
1367 | pgp->count); | |
1368 | } | |
1369 | ||
1370 | /* brw mode can only be used at client */ | |
7ae59eda | 1371 | LASSERT(ed->ed_next); |
d7e09d03 PT |
1372 | rc = cl_echo_object_brw(eco, rw, offset, pages, npages, async); |
1373 | ||
1374 | out: | |
1375 | if (rc != 0 || rw != OBD_BRW_READ) | |
1376 | verify = 0; | |
1377 | ||
1378 | for (i = 0, pgp = pga; i < npages; i++, pgp++) { | |
7ae59eda | 1379 | if (!pgp->pg) |
d7e09d03 PT |
1380 | continue; |
1381 | ||
1382 | if (verify) { | |
1383 | int vrc; | |
ded9f908 | 1384 | |
f833ea10 | 1385 | vrc = echo_client_page_debug_check(pgp->pg, |
d7e09d03 PT |
1386 | ostid_id(&oa->o_oi), |
1387 | pgp->off, pgp->count); | |
1388 | if (vrc != 0 && rc == 0) | |
1389 | rc = vrc; | |
1390 | } | |
0c52e423 | 1391 | __free_page(pgp->pg); |
d7e09d03 | 1392 | } |
c5b89520 JL |
1393 | kfree(pga); |
1394 | kfree(pages); | |
0a3bdb00 | 1395 | return rc; |
d7e09d03 PT |
1396 | } |
1397 | ||
1398 | static int echo_client_prep_commit(const struct lu_env *env, | |
1399 | struct obd_export *exp, int rw, | |
1400 | struct obdo *oa, struct echo_object *eco, | |
21aef7d9 OD |
1401 | u64 offset, u64 count, |
1402 | u64 batch, struct obd_trans_info *oti, | |
d7e09d03 PT |
1403 | int async) |
1404 | { | |
d7e09d03 PT |
1405 | struct obd_ioobj ioo; |
1406 | struct niobuf_local *lnb; | |
1407 | struct niobuf_remote *rnb; | |
21aef7d9 OD |
1408 | u64 off; |
1409 | u64 npages, tot_pages; | |
d7e09d03 PT |
1410 | int i, ret = 0, brw_flags = 0; |
1411 | ||
616387e8 | 1412 | if (count <= 0 || (count & (~PAGE_MASK)) != 0) |
0a3bdb00 | 1413 | return -EINVAL; |
d7e09d03 | 1414 | |
09cbfeaf KS |
1415 | npages = batch >> PAGE_SHIFT; |
1416 | tot_pages = count >> PAGE_SHIFT; | |
d7e09d03 | 1417 | |
c5b89520 JL |
1418 | lnb = kcalloc(npages, sizeof(struct niobuf_local), GFP_NOFS); |
1419 | rnb = kcalloc(npages, sizeof(struct niobuf_remote), GFP_NOFS); | |
d7e09d03 | 1420 | |
7ae59eda | 1421 | if (!lnb || !rnb) { |
abb368ab JY |
1422 | ret = -ENOMEM; |
1423 | goto out; | |
1424 | } | |
d7e09d03 PT |
1425 | |
1426 | if (rw == OBD_BRW_WRITE && async) | |
1427 | brw_flags |= OBD_BRW_ASYNC; | |
1428 | ||
1429 | obdo_to_ioobj(oa, &ioo); | |
1430 | ||
1431 | off = offset; | |
1432 | ||
a58a38ac | 1433 | for (; tot_pages; tot_pages -= npages) { |
d7e09d03 PT |
1434 | int lpages; |
1435 | ||
1436 | if (tot_pages < npages) | |
1437 | npages = tot_pages; | |
1438 | ||
09cbfeaf | 1439 | for (i = 0; i < npages; i++, off += PAGE_SIZE) { |
d7e09d03 | 1440 | rnb[i].offset = off; |
09cbfeaf | 1441 | rnb[i].len = PAGE_SIZE; |
d7e09d03 PT |
1442 | rnb[i].flags = brw_flags; |
1443 | } | |
1444 | ||
1445 | ioo.ioo_bufcnt = npages; | |
d7e09d03 PT |
1446 | |
1447 | lpages = npages; | |
1448 | ret = obd_preprw(env, rw, exp, oa, 1, &ioo, rnb, &lpages, | |
ef2e0f55 | 1449 | lnb, oti); |
d7e09d03 | 1450 | if (ret != 0) |
abb368ab | 1451 | goto out; |
d7e09d03 PT |
1452 | LASSERT(lpages == npages); |
1453 | ||
1454 | for (i = 0; i < lpages; i++) { | |
1455 | struct page *page = lnb[i].page; | |
1456 | ||
1457 | /* read past eof? */ | |
7ae59eda | 1458 | if (!page && lnb[i].rc == 0) |
d7e09d03 PT |
1459 | continue; |
1460 | ||
1461 | if (async) | |
1462 | lnb[i].flags |= OBD_BRW_ASYNC; | |
1463 | ||
1464 | if (ostid_id(&oa->o_oi) == ECHO_PERSISTENT_OBJID || | |
1465 | (oa->o_valid & OBD_MD_FLFLAGS) == 0 || | |
1466 | (oa->o_flags & OBD_FL_DEBUG_CHECK) == 0) | |
1467 | continue; | |
1468 | ||
1469 | if (rw == OBD_BRW_WRITE) | |
f833ea10 | 1470 | echo_client_page_debug_setup(page, rw, |
d7e09d03 PT |
1471 | ostid_id(&oa->o_oi), |
1472 | rnb[i].offset, | |
1473 | rnb[i].len); | |
1474 | else | |
f833ea10 | 1475 | echo_client_page_debug_check(page, |
d7e09d03 PT |
1476 | ostid_id(&oa->o_oi), |
1477 | rnb[i].offset, | |
1478 | rnb[i].len); | |
1479 | } | |
1480 | ||
1481 | ret = obd_commitrw(env, rw, exp, oa, 1, &ioo, | |
1482 | rnb, npages, lnb, oti, ret); | |
1483 | if (ret != 0) | |
abb368ab | 1484 | goto out; |
d7e09d03 PT |
1485 | |
1486 | /* Reset oti otherwise it would confuse ldiskfs. */ | |
1487 | memset(oti, 0, sizeof(*oti)); | |
09b0170e JY |
1488 | |
1489 | /* Reuse env context. */ | |
1490 | lu_context_exit((struct lu_context *)&env->le_ctx); | |
1491 | lu_context_enter((struct lu_context *)&env->le_ctx); | |
d7e09d03 PT |
1492 | } |
1493 | ||
1494 | out: | |
627ef6ea JL |
1495 | kfree(lnb); |
1496 | kfree(rnb); | |
0a3bdb00 | 1497 | return ret; |
d7e09d03 PT |
1498 | } |
1499 | ||
1500 | static int echo_client_brw_ioctl(const struct lu_env *env, int rw, | |
1501 | struct obd_export *exp, | |
1502 | struct obd_ioctl_data *data, | |
1503 | struct obd_trans_info *dummy_oti) | |
1504 | { | |
1505 | struct obd_device *obd = class_exp2obd(exp); | |
1506 | struct echo_device *ed = obd2echo_dev(obd); | |
1507 | struct echo_client_obd *ec = ed->ed_ec; | |
1508 | struct obdo *oa = &data->ioc_obdo1; | |
1509 | struct echo_object *eco; | |
1510 | int rc; | |
1511 | int async = 1; | |
1512 | long test_mode; | |
d7e09d03 PT |
1513 | |
1514 | LASSERT(oa->o_valid & OBD_MD_FLGROUP); | |
1515 | ||
1516 | rc = echo_get_object(&eco, ed, oa); | |
1517 | if (rc) | |
0a3bdb00 | 1518 | return rc; |
d7e09d03 PT |
1519 | |
1520 | oa->o_valid &= ~OBD_MD_FLHANDLE; | |
1521 | ||
1522 | /* OFD/obdfilter works only via prep/commit */ | |
1523 | test_mode = (long)data->ioc_pbuf1; | |
1524 | if (test_mode == 1) | |
1525 | async = 0; | |
1526 | ||
7ae59eda | 1527 | if (!ed->ed_next && test_mode != 3) { |
d7e09d03 PT |
1528 | test_mode = 3; |
1529 | data->ioc_plen1 = data->ioc_count; | |
1530 | } | |
1531 | ||
1532 | /* Truncate batch size to maximum */ | |
1533 | if (data->ioc_plen1 > PTLRPC_MAX_BRW_SIZE) | |
1534 | data->ioc_plen1 = PTLRPC_MAX_BRW_SIZE; | |
1535 | ||
1536 | switch (test_mode) { | |
1537 | case 1: | |
1538 | /* fall through */ | |
1539 | case 2: | |
1540 | rc = echo_client_kbrw(ed, rw, oa, | |
1541 | eco, data->ioc_offset, | |
1542 | data->ioc_count, async, dummy_oti); | |
1543 | break; | |
1544 | case 3: | |
1545 | rc = echo_client_prep_commit(env, ec->ec_exp, rw, oa, | |
1546 | eco, data->ioc_offset, | |
1547 | data->ioc_count, data->ioc_plen1, | |
1548 | dummy_oti, async); | |
1549 | break; | |
1550 | default: | |
1551 | rc = -EINVAL; | |
1552 | } | |
1553 | echo_put_object(eco); | |
0a3bdb00 | 1554 | return rc; |
d7e09d03 PT |
1555 | } |
1556 | ||
d7e09d03 PT |
1557 | static int |
1558 | echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len, | |
e09bee34 | 1559 | void *karg, void __user *uarg) |
d7e09d03 PT |
1560 | { |
1561 | struct obd_device *obd = exp->exp_obd; | |
1562 | struct echo_device *ed = obd2echo_dev(obd); | |
1563 | struct echo_client_obd *ec = ed->ed_ec; | |
1564 | struct echo_object *eco; | |
1565 | struct obd_ioctl_data *data = karg; | |
1566 | struct obd_trans_info dummy_oti; | |
1567 | struct lu_env *env; | |
1568 | struct oti_req_ack_lock *ack_lock; | |
1569 | struct obdo *oa; | |
1570 | struct lu_fid fid; | |
1571 | int rw = OBD_BRW_READ; | |
1572 | int rc = 0; | |
1573 | int i; | |
d7e09d03 PT |
1574 | |
1575 | memset(&dummy_oti, 0, sizeof(dummy_oti)); | |
1576 | ||
1577 | oa = &data->ioc_obdo1; | |
1578 | if (!(oa->o_valid & OBD_MD_FLGROUP)) { | |
1579 | oa->o_valid |= OBD_MD_FLGROUP; | |
1580 | ostid_set_seq_echo(&oa->o_oi); | |
1581 | } | |
1582 | ||
1583 | /* This FID is unpacked just for validation at this point */ | |
1584 | rc = ostid_to_fid(&fid, &oa->o_oi, 0); | |
1585 | if (rc < 0) | |
0a3bdb00 | 1586 | return rc; |
d7e09d03 | 1587 | |
c5b89520 | 1588 | env = kzalloc(sizeof(*env), GFP_NOFS); |
efeb257d | 1589 | if (!env) |
0a3bdb00 | 1590 | return -ENOMEM; |
d7e09d03 PT |
1591 | |
1592 | rc = lu_env_init(env, LCT_DT_THREAD); | |
abb368ab JY |
1593 | if (rc) { |
1594 | rc = -ENOMEM; | |
1595 | goto out; | |
1596 | } | |
d7e09d03 PT |
1597 | |
1598 | switch (cmd) { | |
1599 | case OBD_IOC_CREATE: /* may create echo object */ | |
abb368ab JY |
1600 | if (!capable(CFS_CAP_SYS_ADMIN)) { |
1601 | rc = -EPERM; | |
1602 | goto out; | |
1603 | } | |
d7e09d03 | 1604 | |
f833ea10 | 1605 | rc = echo_create_object(env, ed, oa, &dummy_oti); |
abb368ab | 1606 | goto out; |
d7e09d03 | 1607 | |
d7e09d03 | 1608 | case OBD_IOC_DESTROY: |
abb368ab JY |
1609 | if (!capable(CFS_CAP_SYS_ADMIN)) { |
1610 | rc = -EPERM; | |
1611 | goto out; | |
1612 | } | |
d7e09d03 PT |
1613 | |
1614 | rc = echo_get_object(&eco, ed, oa); | |
1615 | if (rc == 0) { | |
f833ea10 | 1616 | rc = obd_destroy(env, ec->ec_exp, oa, NULL, |
ef2e0f55 | 1617 | &dummy_oti, NULL); |
d7e09d03 PT |
1618 | if (rc == 0) |
1619 | eco->eo_deleted = 1; | |
1620 | echo_put_object(eco); | |
1621 | } | |
abb368ab | 1622 | goto out; |
d7e09d03 PT |
1623 | |
1624 | case OBD_IOC_GETATTR: | |
1625 | rc = echo_get_object(&eco, ed, oa); | |
1626 | if (rc == 0) { | |
f833ea10 JH |
1627 | struct obd_info oinfo = { |
1628 | .oi_oa = oa, | |
1629 | }; | |
ded9f908 | 1630 | |
d7e09d03 PT |
1631 | rc = obd_getattr(env, ec->ec_exp, &oinfo); |
1632 | echo_put_object(eco); | |
1633 | } | |
abb368ab | 1634 | goto out; |
d7e09d03 PT |
1635 | |
1636 | case OBD_IOC_SETATTR: | |
abb368ab JY |
1637 | if (!capable(CFS_CAP_SYS_ADMIN)) { |
1638 | rc = -EPERM; | |
1639 | goto out; | |
1640 | } | |
d7e09d03 PT |
1641 | |
1642 | rc = echo_get_object(&eco, ed, oa); | |
1643 | if (rc == 0) { | |
f833ea10 JH |
1644 | struct obd_info oinfo = { |
1645 | .oi_oa = oa, | |
1646 | }; | |
d7e09d03 PT |
1647 | |
1648 | rc = obd_setattr(env, ec->ec_exp, &oinfo, NULL); | |
1649 | echo_put_object(eco); | |
1650 | } | |
abb368ab | 1651 | goto out; |
d7e09d03 PT |
1652 | |
1653 | case OBD_IOC_BRW_WRITE: | |
abb368ab JY |
1654 | if (!capable(CFS_CAP_SYS_ADMIN)) { |
1655 | rc = -EPERM; | |
1656 | goto out; | |
1657 | } | |
d7e09d03 PT |
1658 | |
1659 | rw = OBD_BRW_WRITE; | |
1660 | /* fall through */ | |
1661 | case OBD_IOC_BRW_READ: | |
1662 | rc = echo_client_brw_ioctl(env, rw, exp, data, &dummy_oti); | |
abb368ab | 1663 | goto out; |
d7e09d03 | 1664 | |
d7e09d03 | 1665 | default: |
d841438a | 1666 | CERROR("echo_ioctl(): unrecognised ioctl %#x\n", cmd); |
abb368ab JY |
1667 | rc = -ENOTTY; |
1668 | goto out; | |
d7e09d03 PT |
1669 | } |
1670 | ||
d7e09d03 PT |
1671 | out: |
1672 | lu_env_fini(env); | |
c5b89520 | 1673 | kfree(env); |
d7e09d03 PT |
1674 | |
1675 | /* XXX this should be in a helper also called by target_send_reply */ | |
1676 | for (ack_lock = dummy_oti.oti_ack_locks, i = 0; i < 4; | |
1677 | i++, ack_lock++) { | |
1678 | if (!ack_lock->mode) | |
1679 | break; | |
1680 | ldlm_lock_decref(&ack_lock->lock, ack_lock->mode); | |
1681 | } | |
1682 | ||
1683 | return rc; | |
1684 | } | |
1685 | ||
1686 | static int echo_client_setup(const struct lu_env *env, | |
1687 | struct obd_device *obddev, struct lustre_cfg *lcfg) | |
1688 | { | |
1689 | struct echo_client_obd *ec = &obddev->u.echo_client; | |
1690 | struct obd_device *tgt; | |
1691 | struct obd_uuid echo_uuid = { "ECHO_UUID" }; | |
1692 | struct obd_connect_data *ocd = NULL; | |
1693 | int rc; | |
d7e09d03 PT |
1694 | |
1695 | if (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { | |
1696 | CERROR("requires a TARGET OBD name\n"); | |
0a3bdb00 | 1697 | return -EINVAL; |
d7e09d03 PT |
1698 | } |
1699 | ||
1700 | tgt = class_name2obd(lustre_cfg_string(lcfg, 1)); | |
1701 | if (!tgt || !tgt->obd_attached || !tgt->obd_set_up) { | |
1702 | CERROR("device not attached or not set up (%s)\n", | |
1703 | lustre_cfg_string(lcfg, 1)); | |
0a3bdb00 | 1704 | return -EINVAL; |
d7e09d03 PT |
1705 | } |
1706 | ||
1707 | spin_lock_init(&ec->ec_lock); | |
d841438a YT |
1708 | INIT_LIST_HEAD(&ec->ec_objects); |
1709 | INIT_LIST_HEAD(&ec->ec_locks); | |
d7e09d03 | 1710 | ec->ec_unique = 0; |
d7e09d03 | 1711 | |
c5b89520 | 1712 | ocd = kzalloc(sizeof(*ocd), GFP_NOFS); |
2f27a3e2 | 1713 | if (!ocd) |
d7e09d03 | 1714 | return -ENOMEM; |
d7e09d03 PT |
1715 | |
1716 | ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_REQPORTAL | | |
1717 | OBD_CONNECT_BRW_SIZE | | |
1718 | OBD_CONNECT_GRANT | OBD_CONNECT_FULL20 | | |
3b2f75fd | 1719 | OBD_CONNECT_64BITHASH | OBD_CONNECT_LVB_TYPE | |
1720 | OBD_CONNECT_FID; | |
d7e09d03 PT |
1721 | ocd->ocd_brw_size = DT_MAX_BRW_SIZE; |
1722 | ocd->ocd_version = LUSTRE_VERSION_CODE; | |
1723 | ocd->ocd_group = FID_SEQ_ECHO; | |
1724 | ||
1725 | rc = obd_connect(env, &ec->ec_exp, tgt, &echo_uuid, ocd, NULL); | |
d7e09d03 | 1726 | |
c5b89520 | 1727 | kfree(ocd); |
d7e09d03 PT |
1728 | |
1729 | if (rc != 0) { | |
1730 | CERROR("fail to connect to device %s\n", | |
1731 | lustre_cfg_string(lcfg, 1)); | |
fbe7c6c7 | 1732 | return rc; |
d7e09d03 PT |
1733 | } |
1734 | ||
0a3bdb00 | 1735 | return rc; |
d7e09d03 PT |
1736 | } |
1737 | ||
1738 | static int echo_client_cleanup(struct obd_device *obddev) | |
1739 | { | |
d7e09d03 PT |
1740 | struct echo_client_obd *ec = &obddev->u.echo_client; |
1741 | int rc; | |
d7e09d03 | 1742 | |
d7e09d03 PT |
1743 | if (!list_empty(&obddev->obd_exports)) { |
1744 | CERROR("still has clients!\n"); | |
0a3bdb00 | 1745 | return -EBUSY; |
d7e09d03 PT |
1746 | } |
1747 | ||
1748 | LASSERT(atomic_read(&ec->ec_exp->exp_refcount) > 0); | |
1749 | rc = obd_disconnect(ec->ec_exp); | |
1750 | if (rc != 0) | |
1751 | CERROR("fail to disconnect device: %d\n", rc); | |
1752 | ||
0a3bdb00 | 1753 | return rc; |
d7e09d03 PT |
1754 | } |
1755 | ||
1756 | static int echo_client_connect(const struct lu_env *env, | |
1757 | struct obd_export **exp, | |
1758 | struct obd_device *src, struct obd_uuid *cluuid, | |
1759 | struct obd_connect_data *data, void *localdata) | |
1760 | { | |
1761 | int rc; | |
1762 | struct lustre_handle conn = { 0 }; | |
1763 | ||
d7e09d03 PT |
1764 | rc = class_connect(&conn, src, cluuid); |
1765 | if (rc == 0) { | |
1766 | *exp = class_conn2export(&conn); | |
1767 | } | |
1768 | ||
0a3bdb00 | 1769 | return rc; |
d7e09d03 PT |
1770 | } |
1771 | ||
1772 | static int echo_client_disconnect(struct obd_export *exp) | |
1773 | { | |
d7e09d03 | 1774 | int rc; |
d7e09d03 | 1775 | |
7ae59eda | 1776 | if (!exp) { |
abb368ab JY |
1777 | rc = -EINVAL; |
1778 | goto out; | |
1779 | } | |
d7e09d03 | 1780 | |
d7e09d03 | 1781 | rc = class_disconnect(exp); |
abb368ab | 1782 | goto out; |
d7e09d03 PT |
1783 | out: |
1784 | return rc; | |
1785 | } | |
1786 | ||
1787 | static struct obd_ops echo_client_obd_ops = { | |
a13b1f32 DC |
1788 | .owner = THIS_MODULE, |
1789 | .iocontrol = echo_client_iocontrol, | |
1790 | .connect = echo_client_connect, | |
1791 | .disconnect = echo_client_disconnect | |
d7e09d03 PT |
1792 | }; |
1793 | ||
5b34cd29 | 1794 | static int echo_client_init(void) |
d7e09d03 | 1795 | { |
d7e09d03 PT |
1796 | int rc; |
1797 | ||
d7e09d03 PT |
1798 | rc = lu_kmem_init(echo_caches); |
1799 | if (rc == 0) { | |
1800 | rc = class_register_type(&echo_client_obd_ops, NULL, | |
d7e09d03 PT |
1801 | LUSTRE_ECHO_CLIENT_NAME, |
1802 | &echo_device_type); | |
1803 | if (rc) | |
1804 | lu_kmem_fini(echo_caches); | |
1805 | } | |
1806 | return rc; | |
1807 | } | |
1808 | ||
5b34cd29 | 1809 | static void echo_client_exit(void) |
d7e09d03 PT |
1810 | { |
1811 | class_unregister_type(LUSTRE_ECHO_CLIENT_NAME); | |
1812 | lu_kmem_fini(echo_caches); | |
1813 | } | |
1814 | ||
1815 | static int __init obdecho_init(void) | |
1816 | { | |
d7e09d03 PT |
1817 | LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n"); |
1818 | ||
09cbfeaf | 1819 | LASSERT(PAGE_SIZE % OBD_ECHO_BLOCK_SIZE == 0); |
d7e09d03 | 1820 | |
d9518b76 | 1821 | return echo_client_init(); |
d7e09d03 PT |
1822 | } |
1823 | ||
1824 | static void /*__exit*/ obdecho_exit(void) | |
1825 | { | |
1826 | echo_client_exit(); | |
d7e09d03 PT |
1827 | } |
1828 | ||
a0455471 | 1829 | MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>"); |
57878e17 | 1830 | MODULE_DESCRIPTION("Lustre Echo Client test driver"); |
6960736c | 1831 | MODULE_VERSION(LUSTRE_VERSION_STRING); |
5b0e50b9 | 1832 | MODULE_LICENSE("GPL"); |
d7e09d03 | 1833 | |
6960736c GKH |
1834 | module_init(obdecho_init); |
1835 | module_exit(obdecho_exit); | |
d7e09d03 PT |
1836 | |
1837 | /** @} echo_client */ |