2 #include <linux/ceph/ceph_debug.h>
4 #include <linux/module.h>
6 #include <linux/highmem.h>
8 #include <linux/pagemap.h>
9 #include <linux/slab.h>
10 #include <linux/uaccess.h>
12 #include <linux/bio.h>
15 #include <linux/ceph/libceph.h>
16 #include <linux/ceph/osd_client.h>
17 #include <linux/ceph/messenger.h>
18 #include <linux/ceph/decode.h>
19 #include <linux/ceph/auth.h>
20 #include <linux/ceph/pagelist.h>
22 #define OSD_OPREPLY_FRONT_LEN 512
24 static struct kmem_cache
*ceph_osd_request_cache
;
26 static const struct ceph_connection_operations osd_con_ops
;
29 * Implement client access to distributed object storage cluster.
31 * All data objects are stored within a cluster/cloud of OSDs, or
32 * "object storage devices." (Note that Ceph OSDs have _nothing_ to
33 * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply
34 * remote daemons serving up and coordinating consistent and safe
37 * Cluster membership and the mapping of data objects onto storage devices
38 * are described by the osd map.
40 * We keep track of pending OSD requests (read, write), resubmit
41 * requests to different OSDs when the cluster topology/data layout
42 * change, or retry the affected requests when the communications
43 * channel with an OSD is reset.
46 static void link_request(struct ceph_osd
*osd
, struct ceph_osd_request
*req
);
47 static void unlink_request(struct ceph_osd
*osd
, struct ceph_osd_request
*req
);
48 static void link_linger(struct ceph_osd
*osd
,
49 struct ceph_osd_linger_request
*lreq
);
50 static void unlink_linger(struct ceph_osd
*osd
,
51 struct ceph_osd_linger_request
*lreq
);
54 static inline bool rwsem_is_wrlocked(struct rw_semaphore
*sem
)
58 if (unlikely(down_read_trylock(sem
))) {
65 static inline void verify_osdc_locked(struct ceph_osd_client
*osdc
)
67 WARN_ON(!rwsem_is_locked(&osdc
->lock
));
69 static inline void verify_osdc_wrlocked(struct ceph_osd_client
*osdc
)
71 WARN_ON(!rwsem_is_wrlocked(&osdc
->lock
));
73 static inline void verify_osd_locked(struct ceph_osd
*osd
)
75 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
77 WARN_ON(!(mutex_is_locked(&osd
->lock
) &&
78 rwsem_is_locked(&osdc
->lock
)) &&
79 !rwsem_is_wrlocked(&osdc
->lock
));
81 static inline void verify_lreq_locked(struct ceph_osd_linger_request
*lreq
)
83 WARN_ON(!mutex_is_locked(&lreq
->lock
));
86 static inline void verify_osdc_locked(struct ceph_osd_client
*osdc
) { }
87 static inline void verify_osdc_wrlocked(struct ceph_osd_client
*osdc
) { }
88 static inline void verify_osd_locked(struct ceph_osd
*osd
) { }
89 static inline void verify_lreq_locked(struct ceph_osd_linger_request
*lreq
) { }
93 * calculate the mapping of a file extent onto an object, and fill out the
94 * request accordingly. shorten extent as necessary if it crosses an
97 * fill osd op in request message.
99 static int calc_layout(struct ceph_file_layout
*layout
, u64 off
, u64
*plen
,
100 u64
*objnum
, u64
*objoff
, u64
*objlen
)
102 u64 orig_len
= *plen
;
106 r
= ceph_calc_file_object_mapping(layout
, off
, orig_len
, objnum
,
110 if (*objlen
< orig_len
) {
112 dout(" skipping last %llu, final file extent %llu~%llu\n",
113 orig_len
- *plen
, off
, *plen
);
116 dout("calc_layout objnum=%llx %llu~%llu\n", *objnum
, *objoff
, *objlen
);
121 static void ceph_osd_data_init(struct ceph_osd_data
*osd_data
)
123 memset(osd_data
, 0, sizeof (*osd_data
));
124 osd_data
->type
= CEPH_OSD_DATA_TYPE_NONE
;
127 static void ceph_osd_data_pages_init(struct ceph_osd_data
*osd_data
,
128 struct page
**pages
, u64 length
, u32 alignment
,
129 bool pages_from_pool
, bool own_pages
)
131 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGES
;
132 osd_data
->pages
= pages
;
133 osd_data
->length
= length
;
134 osd_data
->alignment
= alignment
;
135 osd_data
->pages_from_pool
= pages_from_pool
;
136 osd_data
->own_pages
= own_pages
;
139 static void ceph_osd_data_pagelist_init(struct ceph_osd_data
*osd_data
,
140 struct ceph_pagelist
*pagelist
)
142 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGELIST
;
143 osd_data
->pagelist
= pagelist
;
147 static void ceph_osd_data_bio_init(struct ceph_osd_data
*osd_data
,
148 struct bio
*bio
, size_t bio_length
)
150 osd_data
->type
= CEPH_OSD_DATA_TYPE_BIO
;
152 osd_data
->bio_length
= bio_length
;
154 #endif /* CONFIG_BLOCK */
156 #define osd_req_op_data(oreq, whch, typ, fld) \
158 struct ceph_osd_request *__oreq = (oreq); \
159 unsigned int __whch = (whch); \
160 BUG_ON(__whch >= __oreq->r_num_ops); \
161 &__oreq->r_ops[__whch].typ.fld; \
164 static struct ceph_osd_data
*
165 osd_req_op_raw_data_in(struct ceph_osd_request
*osd_req
, unsigned int which
)
167 BUG_ON(which
>= osd_req
->r_num_ops
);
169 return &osd_req
->r_ops
[which
].raw_data_in
;
172 struct ceph_osd_data
*
173 osd_req_op_extent_osd_data(struct ceph_osd_request
*osd_req
,
176 return osd_req_op_data(osd_req
, which
, extent
, osd_data
);
178 EXPORT_SYMBOL(osd_req_op_extent_osd_data
);
180 void osd_req_op_raw_data_in_pages(struct ceph_osd_request
*osd_req
,
181 unsigned int which
, struct page
**pages
,
182 u64 length
, u32 alignment
,
183 bool pages_from_pool
, bool own_pages
)
185 struct ceph_osd_data
*osd_data
;
187 osd_data
= osd_req_op_raw_data_in(osd_req
, which
);
188 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
189 pages_from_pool
, own_pages
);
191 EXPORT_SYMBOL(osd_req_op_raw_data_in_pages
);
193 void osd_req_op_extent_osd_data_pages(struct ceph_osd_request
*osd_req
,
194 unsigned int which
, struct page
**pages
,
195 u64 length
, u32 alignment
,
196 bool pages_from_pool
, bool own_pages
)
198 struct ceph_osd_data
*osd_data
;
200 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
201 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
202 pages_from_pool
, own_pages
);
204 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages
);
206 void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request
*osd_req
,
207 unsigned int which
, struct ceph_pagelist
*pagelist
)
209 struct ceph_osd_data
*osd_data
;
211 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
212 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
214 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist
);
217 void osd_req_op_extent_osd_data_bio(struct ceph_osd_request
*osd_req
,
218 unsigned int which
, struct bio
*bio
, size_t bio_length
)
220 struct ceph_osd_data
*osd_data
;
222 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
223 ceph_osd_data_bio_init(osd_data
, bio
, bio_length
);
225 EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio
);
226 #endif /* CONFIG_BLOCK */
228 static void osd_req_op_cls_request_info_pagelist(
229 struct ceph_osd_request
*osd_req
,
230 unsigned int which
, struct ceph_pagelist
*pagelist
)
232 struct ceph_osd_data
*osd_data
;
234 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_info
);
235 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
238 void osd_req_op_cls_request_data_pagelist(
239 struct ceph_osd_request
*osd_req
,
240 unsigned int which
, struct ceph_pagelist
*pagelist
)
242 struct ceph_osd_data
*osd_data
;
244 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
245 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
246 osd_req
->r_ops
[which
].cls
.indata_len
+= pagelist
->length
;
247 osd_req
->r_ops
[which
].indata_len
+= pagelist
->length
;
249 EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist
);
251 void osd_req_op_cls_request_data_pages(struct ceph_osd_request
*osd_req
,
252 unsigned int which
, struct page
**pages
, u64 length
,
253 u32 alignment
, bool pages_from_pool
, bool own_pages
)
255 struct ceph_osd_data
*osd_data
;
257 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
258 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
259 pages_from_pool
, own_pages
);
260 osd_req
->r_ops
[which
].cls
.indata_len
+= length
;
261 osd_req
->r_ops
[which
].indata_len
+= length
;
263 EXPORT_SYMBOL(osd_req_op_cls_request_data_pages
);
265 void osd_req_op_cls_response_data_pages(struct ceph_osd_request
*osd_req
,
266 unsigned int which
, struct page
**pages
, u64 length
,
267 u32 alignment
, bool pages_from_pool
, bool own_pages
)
269 struct ceph_osd_data
*osd_data
;
271 osd_data
= osd_req_op_data(osd_req
, which
, cls
, response_data
);
272 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
273 pages_from_pool
, own_pages
);
275 EXPORT_SYMBOL(osd_req_op_cls_response_data_pages
);
277 static u64
ceph_osd_data_length(struct ceph_osd_data
*osd_data
)
279 switch (osd_data
->type
) {
280 case CEPH_OSD_DATA_TYPE_NONE
:
282 case CEPH_OSD_DATA_TYPE_PAGES
:
283 return osd_data
->length
;
284 case CEPH_OSD_DATA_TYPE_PAGELIST
:
285 return (u64
)osd_data
->pagelist
->length
;
287 case CEPH_OSD_DATA_TYPE_BIO
:
288 return (u64
)osd_data
->bio_length
;
289 #endif /* CONFIG_BLOCK */
291 WARN(true, "unrecognized data type %d\n", (int)osd_data
->type
);
296 static void ceph_osd_data_release(struct ceph_osd_data
*osd_data
)
298 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
&& osd_data
->own_pages
) {
301 num_pages
= calc_pages_for((u64
)osd_data
->alignment
,
302 (u64
)osd_data
->length
);
303 ceph_release_page_vector(osd_data
->pages
, num_pages
);
305 ceph_osd_data_init(osd_data
);
308 static void osd_req_op_data_release(struct ceph_osd_request
*osd_req
,
311 struct ceph_osd_req_op
*op
;
313 BUG_ON(which
>= osd_req
->r_num_ops
);
314 op
= &osd_req
->r_ops
[which
];
317 case CEPH_OSD_OP_READ
:
318 case CEPH_OSD_OP_WRITE
:
319 case CEPH_OSD_OP_WRITEFULL
:
320 ceph_osd_data_release(&op
->extent
.osd_data
);
322 case CEPH_OSD_OP_CALL
:
323 ceph_osd_data_release(&op
->cls
.request_info
);
324 ceph_osd_data_release(&op
->cls
.request_data
);
325 ceph_osd_data_release(&op
->cls
.response_data
);
327 case CEPH_OSD_OP_SETXATTR
:
328 case CEPH_OSD_OP_CMPXATTR
:
329 ceph_osd_data_release(&op
->xattr
.osd_data
);
331 case CEPH_OSD_OP_STAT
:
332 ceph_osd_data_release(&op
->raw_data_in
);
334 case CEPH_OSD_OP_NOTIFY_ACK
:
335 ceph_osd_data_release(&op
->notify_ack
.request_data
);
337 case CEPH_OSD_OP_NOTIFY
:
338 ceph_osd_data_release(&op
->notify
.request_data
);
339 ceph_osd_data_release(&op
->notify
.response_data
);
347 * Assumes @t is zero-initialized.
349 static void target_init(struct ceph_osd_request_target
*t
)
351 ceph_oid_init(&t
->base_oid
);
352 ceph_oloc_init(&t
->base_oloc
);
353 ceph_oid_init(&t
->target_oid
);
354 ceph_oloc_init(&t
->target_oloc
);
356 ceph_osds_init(&t
->acting
);
357 ceph_osds_init(&t
->up
);
361 t
->osd
= CEPH_HOMELESS_OSD
;
364 static void target_copy(struct ceph_osd_request_target
*dest
,
365 const struct ceph_osd_request_target
*src
)
367 ceph_oid_copy(&dest
->base_oid
, &src
->base_oid
);
368 ceph_oloc_copy(&dest
->base_oloc
, &src
->base_oloc
);
369 ceph_oid_copy(&dest
->target_oid
, &src
->target_oid
);
370 ceph_oloc_copy(&dest
->target_oloc
, &src
->target_oloc
);
372 dest
->pgid
= src
->pgid
; /* struct */
373 dest
->pg_num
= src
->pg_num
;
374 dest
->pg_num_mask
= src
->pg_num_mask
;
375 ceph_osds_copy(&dest
->acting
, &src
->acting
);
376 ceph_osds_copy(&dest
->up
, &src
->up
);
377 dest
->size
= src
->size
;
378 dest
->min_size
= src
->min_size
;
379 dest
->sort_bitwise
= src
->sort_bitwise
;
381 dest
->flags
= src
->flags
;
382 dest
->paused
= src
->paused
;
384 dest
->osd
= src
->osd
;
387 static void target_destroy(struct ceph_osd_request_target
*t
)
389 ceph_oid_destroy(&t
->base_oid
);
390 ceph_oid_destroy(&t
->target_oid
);
396 static void request_release_checks(struct ceph_osd_request
*req
)
398 WARN_ON(!RB_EMPTY_NODE(&req
->r_node
));
399 WARN_ON(!RB_EMPTY_NODE(&req
->r_mc_node
));
400 WARN_ON(!list_empty(&req
->r_unsafe_item
));
404 static void ceph_osdc_release_request(struct kref
*kref
)
406 struct ceph_osd_request
*req
= container_of(kref
,
407 struct ceph_osd_request
, r_kref
);
410 dout("%s %p (r_request %p r_reply %p)\n", __func__
, req
,
411 req
->r_request
, req
->r_reply
);
412 request_release_checks(req
);
415 ceph_msg_put(req
->r_request
);
417 ceph_msg_put(req
->r_reply
);
419 for (which
= 0; which
< req
->r_num_ops
; which
++)
420 osd_req_op_data_release(req
, which
);
422 target_destroy(&req
->r_t
);
423 ceph_put_snap_context(req
->r_snapc
);
426 mempool_free(req
, req
->r_osdc
->req_mempool
);
427 else if (req
->r_num_ops
<= CEPH_OSD_SLAB_OPS
)
428 kmem_cache_free(ceph_osd_request_cache
, req
);
433 void ceph_osdc_get_request(struct ceph_osd_request
*req
)
435 dout("%s %p (was %d)\n", __func__
, req
,
436 atomic_read(&req
->r_kref
.refcount
));
437 kref_get(&req
->r_kref
);
439 EXPORT_SYMBOL(ceph_osdc_get_request
);
441 void ceph_osdc_put_request(struct ceph_osd_request
*req
)
444 dout("%s %p (was %d)\n", __func__
, req
,
445 atomic_read(&req
->r_kref
.refcount
));
446 kref_put(&req
->r_kref
, ceph_osdc_release_request
);
449 EXPORT_SYMBOL(ceph_osdc_put_request
);
451 static void request_init(struct ceph_osd_request
*req
)
453 /* req only, each op is zeroed in _osd_req_op_init() */
454 memset(req
, 0, sizeof(*req
));
456 kref_init(&req
->r_kref
);
457 init_completion(&req
->r_completion
);
458 init_completion(&req
->r_safe_completion
);
459 RB_CLEAR_NODE(&req
->r_node
);
460 RB_CLEAR_NODE(&req
->r_mc_node
);
461 INIT_LIST_HEAD(&req
->r_unsafe_item
);
463 target_init(&req
->r_t
);
467 * This is ugly, but it allows us to reuse linger registration and ping
468 * requests, keeping the structure of the code around send_linger{_ping}()
469 * reasonable. Setting up a min_nr=2 mempool for each linger request
470 * and dealing with copying ops (this blasts req only, watch op remains
471 * intact) isn't any better.
473 static void request_reinit(struct ceph_osd_request
*req
)
475 struct ceph_osd_client
*osdc
= req
->r_osdc
;
476 bool mempool
= req
->r_mempool
;
477 unsigned int num_ops
= req
->r_num_ops
;
478 u64 snapid
= req
->r_snapid
;
479 struct ceph_snap_context
*snapc
= req
->r_snapc
;
480 bool linger
= req
->r_linger
;
481 struct ceph_msg
*request_msg
= req
->r_request
;
482 struct ceph_msg
*reply_msg
= req
->r_reply
;
484 dout("%s req %p\n", __func__
, req
);
485 WARN_ON(atomic_read(&req
->r_kref
.refcount
) != 1);
486 request_release_checks(req
);
488 WARN_ON(atomic_read(&request_msg
->kref
.refcount
) != 1);
489 WARN_ON(atomic_read(&reply_msg
->kref
.refcount
) != 1);
490 target_destroy(&req
->r_t
);
494 req
->r_mempool
= mempool
;
495 req
->r_num_ops
= num_ops
;
496 req
->r_snapid
= snapid
;
497 req
->r_snapc
= snapc
;
498 req
->r_linger
= linger
;
499 req
->r_request
= request_msg
;
500 req
->r_reply
= reply_msg
;
503 struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client
*osdc
,
504 struct ceph_snap_context
*snapc
,
505 unsigned int num_ops
,
509 struct ceph_osd_request
*req
;
512 BUG_ON(num_ops
> CEPH_OSD_SLAB_OPS
);
513 req
= mempool_alloc(osdc
->req_mempool
, gfp_flags
);
514 } else if (num_ops
<= CEPH_OSD_SLAB_OPS
) {
515 req
= kmem_cache_alloc(ceph_osd_request_cache
, gfp_flags
);
517 BUG_ON(num_ops
> CEPH_OSD_MAX_OPS
);
518 req
= kmalloc(sizeof(*req
) + num_ops
* sizeof(req
->r_ops
[0]),
526 req
->r_mempool
= use_mempool
;
527 req
->r_num_ops
= num_ops
;
528 req
->r_snapid
= CEPH_NOSNAP
;
529 req
->r_snapc
= ceph_get_snap_context(snapc
);
531 dout("%s req %p\n", __func__
, req
);
534 EXPORT_SYMBOL(ceph_osdc_alloc_request
);
536 int ceph_osdc_alloc_messages(struct ceph_osd_request
*req
, gfp_t gfp
)
538 struct ceph_osd_client
*osdc
= req
->r_osdc
;
539 struct ceph_msg
*msg
;
542 WARN_ON(ceph_oid_empty(&req
->r_base_oid
));
544 /* create request message */
545 msg_size
= 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */
546 msg_size
+= 4 + 4 + 4 + 8; /* mtime, reassert_version */
547 msg_size
+= 2 + 4 + 8 + 4 + 4; /* oloc */
548 msg_size
+= 1 + 8 + 4 + 4; /* pgid */
549 msg_size
+= 4 + req
->r_base_oid
.name_len
; /* oid */
550 msg_size
+= 2 + req
->r_num_ops
* sizeof(struct ceph_osd_op
);
551 msg_size
+= 8; /* snapid */
552 msg_size
+= 8; /* snap_seq */
553 msg_size
+= 4 + 8 * (req
->r_snapc
? req
->r_snapc
->num_snaps
: 0);
554 msg_size
+= 4; /* retry_attempt */
557 msg
= ceph_msgpool_get(&osdc
->msgpool_op
, 0);
559 msg
= ceph_msg_new(CEPH_MSG_OSD_OP
, msg_size
, gfp
, true);
563 memset(msg
->front
.iov_base
, 0, msg
->front
.iov_len
);
564 req
->r_request
= msg
;
566 /* create reply message */
567 msg_size
= OSD_OPREPLY_FRONT_LEN
;
568 msg_size
+= req
->r_base_oid
.name_len
;
569 msg_size
+= req
->r_num_ops
* sizeof(struct ceph_osd_op
);
572 msg
= ceph_msgpool_get(&osdc
->msgpool_op_reply
, 0);
574 msg
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
, msg_size
, gfp
, true);
582 EXPORT_SYMBOL(ceph_osdc_alloc_messages
);
584 static bool osd_req_opcode_valid(u16 opcode
)
587 #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true;
588 __CEPH_FORALL_OSD_OPS(GENERATE_CASE
)
596 * This is an osd op init function for opcodes that have no data or
597 * other information associated with them. It also serves as a
598 * common init routine for all the other init functions, below.
600 static struct ceph_osd_req_op
*
601 _osd_req_op_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
602 u16 opcode
, u32 flags
)
604 struct ceph_osd_req_op
*op
;
606 BUG_ON(which
>= osd_req
->r_num_ops
);
607 BUG_ON(!osd_req_opcode_valid(opcode
));
609 op
= &osd_req
->r_ops
[which
];
610 memset(op
, 0, sizeof (*op
));
617 void osd_req_op_init(struct ceph_osd_request
*osd_req
,
618 unsigned int which
, u16 opcode
, u32 flags
)
620 (void)_osd_req_op_init(osd_req
, which
, opcode
, flags
);
622 EXPORT_SYMBOL(osd_req_op_init
);
624 void osd_req_op_extent_init(struct ceph_osd_request
*osd_req
,
625 unsigned int which
, u16 opcode
,
626 u64 offset
, u64 length
,
627 u64 truncate_size
, u32 truncate_seq
)
629 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
631 size_t payload_len
= 0;
633 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
634 opcode
!= CEPH_OSD_OP_WRITEFULL
&& opcode
!= CEPH_OSD_OP_ZERO
&&
635 opcode
!= CEPH_OSD_OP_TRUNCATE
);
637 op
->extent
.offset
= offset
;
638 op
->extent
.length
= length
;
639 op
->extent
.truncate_size
= truncate_size
;
640 op
->extent
.truncate_seq
= truncate_seq
;
641 if (opcode
== CEPH_OSD_OP_WRITE
|| opcode
== CEPH_OSD_OP_WRITEFULL
)
642 payload_len
+= length
;
644 op
->indata_len
= payload_len
;
646 EXPORT_SYMBOL(osd_req_op_extent_init
);
648 void osd_req_op_extent_update(struct ceph_osd_request
*osd_req
,
649 unsigned int which
, u64 length
)
651 struct ceph_osd_req_op
*op
;
654 BUG_ON(which
>= osd_req
->r_num_ops
);
655 op
= &osd_req
->r_ops
[which
];
656 previous
= op
->extent
.length
;
658 if (length
== previous
)
659 return; /* Nothing to do */
660 BUG_ON(length
> previous
);
662 op
->extent
.length
= length
;
663 op
->indata_len
-= previous
- length
;
665 EXPORT_SYMBOL(osd_req_op_extent_update
);
667 void osd_req_op_extent_dup_last(struct ceph_osd_request
*osd_req
,
668 unsigned int which
, u64 offset_inc
)
670 struct ceph_osd_req_op
*op
, *prev_op
;
672 BUG_ON(which
+ 1 >= osd_req
->r_num_ops
);
674 prev_op
= &osd_req
->r_ops
[which
];
675 op
= _osd_req_op_init(osd_req
, which
+ 1, prev_op
->op
, prev_op
->flags
);
676 /* dup previous one */
677 op
->indata_len
= prev_op
->indata_len
;
678 op
->outdata_len
= prev_op
->outdata_len
;
679 op
->extent
= prev_op
->extent
;
681 op
->extent
.offset
+= offset_inc
;
682 op
->extent
.length
-= offset_inc
;
684 if (op
->op
== CEPH_OSD_OP_WRITE
|| op
->op
== CEPH_OSD_OP_WRITEFULL
)
685 op
->indata_len
-= offset_inc
;
687 EXPORT_SYMBOL(osd_req_op_extent_dup_last
);
689 void osd_req_op_cls_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
690 u16 opcode
, const char *class, const char *method
)
692 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
694 struct ceph_pagelist
*pagelist
;
695 size_t payload_len
= 0;
698 BUG_ON(opcode
!= CEPH_OSD_OP_CALL
);
700 pagelist
= kmalloc(sizeof (*pagelist
), GFP_NOFS
);
702 ceph_pagelist_init(pagelist
);
704 op
->cls
.class_name
= class;
705 size
= strlen(class);
706 BUG_ON(size
> (size_t) U8_MAX
);
707 op
->cls
.class_len
= size
;
708 ceph_pagelist_append(pagelist
, class, size
);
711 op
->cls
.method_name
= method
;
712 size
= strlen(method
);
713 BUG_ON(size
> (size_t) U8_MAX
);
714 op
->cls
.method_len
= size
;
715 ceph_pagelist_append(pagelist
, method
, size
);
718 osd_req_op_cls_request_info_pagelist(osd_req
, which
, pagelist
);
720 op
->indata_len
= payload_len
;
722 EXPORT_SYMBOL(osd_req_op_cls_init
);
724 int osd_req_op_xattr_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
725 u16 opcode
, const char *name
, const void *value
,
726 size_t size
, u8 cmp_op
, u8 cmp_mode
)
728 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
730 struct ceph_pagelist
*pagelist
;
733 BUG_ON(opcode
!= CEPH_OSD_OP_SETXATTR
&& opcode
!= CEPH_OSD_OP_CMPXATTR
);
735 pagelist
= kmalloc(sizeof(*pagelist
), GFP_NOFS
);
739 ceph_pagelist_init(pagelist
);
741 payload_len
= strlen(name
);
742 op
->xattr
.name_len
= payload_len
;
743 ceph_pagelist_append(pagelist
, name
, payload_len
);
745 op
->xattr
.value_len
= size
;
746 ceph_pagelist_append(pagelist
, value
, size
);
749 op
->xattr
.cmp_op
= cmp_op
;
750 op
->xattr
.cmp_mode
= cmp_mode
;
752 ceph_osd_data_pagelist_init(&op
->xattr
.osd_data
, pagelist
);
753 op
->indata_len
= payload_len
;
756 EXPORT_SYMBOL(osd_req_op_xattr_init
);
759 * @watch_opcode: CEPH_OSD_WATCH_OP_*
761 static void osd_req_op_watch_init(struct ceph_osd_request
*req
, int which
,
762 u64 cookie
, u8 watch_opcode
)
764 struct ceph_osd_req_op
*op
;
766 op
= _osd_req_op_init(req
, which
, CEPH_OSD_OP_WATCH
, 0);
767 op
->watch
.cookie
= cookie
;
768 op
->watch
.op
= watch_opcode
;
772 void osd_req_op_alloc_hint_init(struct ceph_osd_request
*osd_req
,
774 u64 expected_object_size
,
775 u64 expected_write_size
)
777 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
778 CEPH_OSD_OP_SETALLOCHINT
,
781 op
->alloc_hint
.expected_object_size
= expected_object_size
;
782 op
->alloc_hint
.expected_write_size
= expected_write_size
;
785 * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed
786 * not worth a feature bit. Set FAILOK per-op flag to make
787 * sure older osds don't trip over an unsupported opcode.
789 op
->flags
|= CEPH_OSD_OP_FLAG_FAILOK
;
791 EXPORT_SYMBOL(osd_req_op_alloc_hint_init
);
793 static void ceph_osdc_msg_data_add(struct ceph_msg
*msg
,
794 struct ceph_osd_data
*osd_data
)
796 u64 length
= ceph_osd_data_length(osd_data
);
798 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
) {
799 BUG_ON(length
> (u64
) SIZE_MAX
);
801 ceph_msg_data_add_pages(msg
, osd_data
->pages
,
802 length
, osd_data
->alignment
);
803 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGELIST
) {
805 ceph_msg_data_add_pagelist(msg
, osd_data
->pagelist
);
807 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_BIO
) {
808 ceph_msg_data_add_bio(msg
, osd_data
->bio
, length
);
811 BUG_ON(osd_data
->type
!= CEPH_OSD_DATA_TYPE_NONE
);
815 static u32
osd_req_encode_op(struct ceph_osd_op
*dst
,
816 const struct ceph_osd_req_op
*src
)
818 if (WARN_ON(!osd_req_opcode_valid(src
->op
))) {
819 pr_err("unrecognized osd opcode %d\n", src
->op
);
825 case CEPH_OSD_OP_STAT
:
827 case CEPH_OSD_OP_READ
:
828 case CEPH_OSD_OP_WRITE
:
829 case CEPH_OSD_OP_WRITEFULL
:
830 case CEPH_OSD_OP_ZERO
:
831 case CEPH_OSD_OP_TRUNCATE
:
832 dst
->extent
.offset
= cpu_to_le64(src
->extent
.offset
);
833 dst
->extent
.length
= cpu_to_le64(src
->extent
.length
);
834 dst
->extent
.truncate_size
=
835 cpu_to_le64(src
->extent
.truncate_size
);
836 dst
->extent
.truncate_seq
=
837 cpu_to_le32(src
->extent
.truncate_seq
);
839 case CEPH_OSD_OP_CALL
:
840 dst
->cls
.class_len
= src
->cls
.class_len
;
841 dst
->cls
.method_len
= src
->cls
.method_len
;
842 dst
->cls
.indata_len
= cpu_to_le32(src
->cls
.indata_len
);
844 case CEPH_OSD_OP_STARTSYNC
:
846 case CEPH_OSD_OP_WATCH
:
847 dst
->watch
.cookie
= cpu_to_le64(src
->watch
.cookie
);
848 dst
->watch
.ver
= cpu_to_le64(0);
849 dst
->watch
.op
= src
->watch
.op
;
850 dst
->watch
.gen
= cpu_to_le32(src
->watch
.gen
);
852 case CEPH_OSD_OP_NOTIFY_ACK
:
854 case CEPH_OSD_OP_NOTIFY
:
855 dst
->notify
.cookie
= cpu_to_le64(src
->notify
.cookie
);
857 case CEPH_OSD_OP_SETALLOCHINT
:
858 dst
->alloc_hint
.expected_object_size
=
859 cpu_to_le64(src
->alloc_hint
.expected_object_size
);
860 dst
->alloc_hint
.expected_write_size
=
861 cpu_to_le64(src
->alloc_hint
.expected_write_size
);
863 case CEPH_OSD_OP_SETXATTR
:
864 case CEPH_OSD_OP_CMPXATTR
:
865 dst
->xattr
.name_len
= cpu_to_le32(src
->xattr
.name_len
);
866 dst
->xattr
.value_len
= cpu_to_le32(src
->xattr
.value_len
);
867 dst
->xattr
.cmp_op
= src
->xattr
.cmp_op
;
868 dst
->xattr
.cmp_mode
= src
->xattr
.cmp_mode
;
870 case CEPH_OSD_OP_CREATE
:
871 case CEPH_OSD_OP_DELETE
:
874 pr_err("unsupported osd opcode %s\n",
875 ceph_osd_op_name(src
->op
));
881 dst
->op
= cpu_to_le16(src
->op
);
882 dst
->flags
= cpu_to_le32(src
->flags
);
883 dst
->payload_len
= cpu_to_le32(src
->indata_len
);
885 return src
->indata_len
;
889 * build new request AND message, calculate layout, and adjust file
892 * if the file was recently truncated, we include information about its
893 * old and new size so that the object can be updated appropriately. (we
894 * avoid synchronously deleting truncated objects because it's slow.)
896 * if @do_sync, include a 'startsync' command so that the osd will flush
899 struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client
*osdc
,
900 struct ceph_file_layout
*layout
,
901 struct ceph_vino vino
,
903 unsigned int which
, int num_ops
,
904 int opcode
, int flags
,
905 struct ceph_snap_context
*snapc
,
910 struct ceph_osd_request
*req
;
916 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
917 opcode
!= CEPH_OSD_OP_ZERO
&& opcode
!= CEPH_OSD_OP_TRUNCATE
&&
918 opcode
!= CEPH_OSD_OP_CREATE
&& opcode
!= CEPH_OSD_OP_DELETE
);
920 req
= ceph_osdc_alloc_request(osdc
, snapc
, num_ops
, use_mempool
,
927 /* calculate max write size */
928 r
= calc_layout(layout
, off
, plen
, &objnum
, &objoff
, &objlen
);
932 if (opcode
== CEPH_OSD_OP_CREATE
|| opcode
== CEPH_OSD_OP_DELETE
) {
933 osd_req_op_init(req
, which
, opcode
, 0);
935 u32 object_size
= le32_to_cpu(layout
->fl_object_size
);
936 u32 object_base
= off
- objoff
;
937 if (!(truncate_seq
== 1 && truncate_size
== -1ULL)) {
938 if (truncate_size
<= object_base
) {
941 truncate_size
-= object_base
;
942 if (truncate_size
> object_size
)
943 truncate_size
= object_size
;
946 osd_req_op_extent_init(req
, which
, opcode
, objoff
, objlen
,
947 truncate_size
, truncate_seq
);
950 req
->r_flags
= flags
;
951 req
->r_base_oloc
.pool
= ceph_file_layout_pg_pool(*layout
);
952 ceph_oid_printf(&req
->r_base_oid
, "%llx.%08llx", vino
.ino
, objnum
);
954 req
->r_snapid
= vino
.snap
;
955 if (flags
& CEPH_OSD_FLAG_WRITE
)
956 req
->r_data_offset
= off
;
958 r
= ceph_osdc_alloc_messages(req
, GFP_NOFS
);
965 ceph_osdc_put_request(req
);
968 EXPORT_SYMBOL(ceph_osdc_new_request
);
971 * We keep osd requests in an rbtree, sorted by ->r_tid.
973 DEFINE_RB_FUNCS(request
, struct ceph_osd_request
, r_tid
, r_node
)
974 DEFINE_RB_FUNCS(request_mc
, struct ceph_osd_request
, r_tid
, r_mc_node
)
976 static bool osd_homeless(struct ceph_osd
*osd
)
978 return osd
->o_osd
== CEPH_HOMELESS_OSD
;
981 static bool osd_registered(struct ceph_osd
*osd
)
983 verify_osdc_locked(osd
->o_osdc
);
985 return !RB_EMPTY_NODE(&osd
->o_node
);
989 * Assumes @osd is zero-initialized.
991 static void osd_init(struct ceph_osd
*osd
)
993 atomic_set(&osd
->o_ref
, 1);
994 RB_CLEAR_NODE(&osd
->o_node
);
995 osd
->o_requests
= RB_ROOT
;
996 osd
->o_linger_requests
= RB_ROOT
;
997 INIT_LIST_HEAD(&osd
->o_osd_lru
);
998 INIT_LIST_HEAD(&osd
->o_keepalive_item
);
999 osd
->o_incarnation
= 1;
1000 mutex_init(&osd
->lock
);
1003 static void osd_cleanup(struct ceph_osd
*osd
)
1005 WARN_ON(!RB_EMPTY_NODE(&osd
->o_node
));
1006 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_requests
));
1007 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_linger_requests
));
1008 WARN_ON(!list_empty(&osd
->o_osd_lru
));
1009 WARN_ON(!list_empty(&osd
->o_keepalive_item
));
1011 if (osd
->o_auth
.authorizer
) {
1012 WARN_ON(osd_homeless(osd
));
1013 ceph_auth_destroy_authorizer(osd
->o_auth
.authorizer
);
1018 * Track open sessions with osds.
1020 static struct ceph_osd
*create_osd(struct ceph_osd_client
*osdc
, int onum
)
1022 struct ceph_osd
*osd
;
1024 WARN_ON(onum
== CEPH_HOMELESS_OSD
);
1026 osd
= kzalloc(sizeof(*osd
), GFP_NOIO
| __GFP_NOFAIL
);
1031 ceph_con_init(&osd
->o_con
, osd
, &osd_con_ops
, &osdc
->client
->msgr
);
1036 static struct ceph_osd
*get_osd(struct ceph_osd
*osd
)
1038 if (atomic_inc_not_zero(&osd
->o_ref
)) {
1039 dout("get_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
)-1,
1040 atomic_read(&osd
->o_ref
));
1043 dout("get_osd %p FAIL\n", osd
);
1048 static void put_osd(struct ceph_osd
*osd
)
1050 dout("put_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
),
1051 atomic_read(&osd
->o_ref
) - 1);
1052 if (atomic_dec_and_test(&osd
->o_ref
)) {
1058 DEFINE_RB_FUNCS(osd
, struct ceph_osd
, o_osd
, o_node
)
1060 static void __move_osd_to_lru(struct ceph_osd
*osd
)
1062 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
1064 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1065 BUG_ON(!list_empty(&osd
->o_osd_lru
));
1067 spin_lock(&osdc
->osd_lru_lock
);
1068 list_add_tail(&osd
->o_osd_lru
, &osdc
->osd_lru
);
1069 spin_unlock(&osdc
->osd_lru_lock
);
1071 osd
->lru_ttl
= jiffies
+ osdc
->client
->options
->osd_idle_ttl
;
1074 static void maybe_move_osd_to_lru(struct ceph_osd
*osd
)
1076 if (RB_EMPTY_ROOT(&osd
->o_requests
) &&
1077 RB_EMPTY_ROOT(&osd
->o_linger_requests
))
1078 __move_osd_to_lru(osd
);
1081 static void __remove_osd_from_lru(struct ceph_osd
*osd
)
1083 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
1085 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1087 spin_lock(&osdc
->osd_lru_lock
);
1088 if (!list_empty(&osd
->o_osd_lru
))
1089 list_del_init(&osd
->o_osd_lru
);
1090 spin_unlock(&osdc
->osd_lru_lock
);
1094 * Close the connection and assign any leftover requests to the
1097 static void close_osd(struct ceph_osd
*osd
)
1099 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
1102 verify_osdc_wrlocked(osdc
);
1103 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1105 ceph_con_close(&osd
->o_con
);
1107 for (n
= rb_first(&osd
->o_requests
); n
; ) {
1108 struct ceph_osd_request
*req
=
1109 rb_entry(n
, struct ceph_osd_request
, r_node
);
1111 n
= rb_next(n
); /* unlink_request() */
1113 dout(" reassigning req %p tid %llu\n", req
, req
->r_tid
);
1114 unlink_request(osd
, req
);
1115 link_request(&osdc
->homeless_osd
, req
);
1117 for (n
= rb_first(&osd
->o_linger_requests
); n
; ) {
1118 struct ceph_osd_linger_request
*lreq
=
1119 rb_entry(n
, struct ceph_osd_linger_request
, node
);
1121 n
= rb_next(n
); /* unlink_linger() */
1123 dout(" reassigning lreq %p linger_id %llu\n", lreq
,
1125 unlink_linger(osd
, lreq
);
1126 link_linger(&osdc
->homeless_osd
, lreq
);
1129 __remove_osd_from_lru(osd
);
1130 erase_osd(&osdc
->osds
, osd
);
1137 static int reopen_osd(struct ceph_osd
*osd
)
1139 struct ceph_entity_addr
*peer_addr
;
1141 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1143 if (RB_EMPTY_ROOT(&osd
->o_requests
) &&
1144 RB_EMPTY_ROOT(&osd
->o_linger_requests
)) {
1149 peer_addr
= &osd
->o_osdc
->osdmap
->osd_addr
[osd
->o_osd
];
1150 if (!memcmp(peer_addr
, &osd
->o_con
.peer_addr
, sizeof (*peer_addr
)) &&
1151 !ceph_con_opened(&osd
->o_con
)) {
1154 dout("osd addr hasn't changed and connection never opened, "
1155 "letting msgr retry\n");
1156 /* touch each r_stamp for handle_timeout()'s benfit */
1157 for (n
= rb_first(&osd
->o_requests
); n
; n
= rb_next(n
)) {
1158 struct ceph_osd_request
*req
=
1159 rb_entry(n
, struct ceph_osd_request
, r_node
);
1160 req
->r_stamp
= jiffies
;
1166 ceph_con_close(&osd
->o_con
);
1167 ceph_con_open(&osd
->o_con
, CEPH_ENTITY_TYPE_OSD
, osd
->o_osd
, peer_addr
);
1168 osd
->o_incarnation
++;
1173 static struct ceph_osd
*lookup_create_osd(struct ceph_osd_client
*osdc
, int o
,
1176 struct ceph_osd
*osd
;
1179 verify_osdc_wrlocked(osdc
);
1181 verify_osdc_locked(osdc
);
1183 if (o
!= CEPH_HOMELESS_OSD
)
1184 osd
= lookup_osd(&osdc
->osds
, o
);
1186 osd
= &osdc
->homeless_osd
;
1189 return ERR_PTR(-EAGAIN
);
1191 osd
= create_osd(osdc
, o
);
1192 insert_osd(&osdc
->osds
, osd
);
1193 ceph_con_open(&osd
->o_con
, CEPH_ENTITY_TYPE_OSD
, osd
->o_osd
,
1194 &osdc
->osdmap
->osd_addr
[osd
->o_osd
]);
1197 dout("%s osdc %p osd%d -> osd %p\n", __func__
, osdc
, o
, osd
);
1202 * Create request <-> OSD session relation.
1204 * @req has to be assigned a tid, @osd may be homeless.
1206 static void link_request(struct ceph_osd
*osd
, struct ceph_osd_request
*req
)
1208 verify_osd_locked(osd
);
1209 WARN_ON(!req
->r_tid
|| req
->r_osd
);
1210 dout("%s osd %p osd%d req %p tid %llu\n", __func__
, osd
, osd
->o_osd
,
1213 if (!osd_homeless(osd
))
1214 __remove_osd_from_lru(osd
);
1216 atomic_inc(&osd
->o_osdc
->num_homeless
);
1219 insert_request(&osd
->o_requests
, req
);
1223 static void unlink_request(struct ceph_osd
*osd
, struct ceph_osd_request
*req
)
1225 verify_osd_locked(osd
);
1226 WARN_ON(req
->r_osd
!= osd
);
1227 dout("%s osd %p osd%d req %p tid %llu\n", __func__
, osd
, osd
->o_osd
,
1231 erase_request(&osd
->o_requests
, req
);
1234 if (!osd_homeless(osd
))
1235 maybe_move_osd_to_lru(osd
);
1237 atomic_dec(&osd
->o_osdc
->num_homeless
);
1240 static bool __pool_full(struct ceph_pg_pool_info
*pi
)
1242 return pi
->flags
& CEPH_POOL_FLAG_FULL
;
1245 static bool have_pool_full(struct ceph_osd_client
*osdc
)
1249 for (n
= rb_first(&osdc
->osdmap
->pg_pools
); n
; n
= rb_next(n
)) {
1250 struct ceph_pg_pool_info
*pi
=
1251 rb_entry(n
, struct ceph_pg_pool_info
, node
);
1253 if (__pool_full(pi
))
1260 static bool pool_full(struct ceph_osd_client
*osdc
, s64 pool_id
)
1262 struct ceph_pg_pool_info
*pi
;
1264 pi
= ceph_pg_pool_by_id(osdc
->osdmap
, pool_id
);
1268 return __pool_full(pi
);
1272 * Returns whether a request should be blocked from being sent
1273 * based on the current osdmap and osd_client settings.
1275 static bool target_should_be_paused(struct ceph_osd_client
*osdc
,
1276 const struct ceph_osd_request_target
*t
,
1277 struct ceph_pg_pool_info
*pi
)
1279 bool pauserd
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
);
1280 bool pausewr
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
) ||
1281 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
1284 WARN_ON(pi
->id
!= t
->base_oloc
.pool
);
1285 return (t
->flags
& CEPH_OSD_FLAG_READ
&& pauserd
) ||
1286 (t
->flags
& CEPH_OSD_FLAG_WRITE
&& pausewr
);
1289 enum calc_target_result
{
1290 CALC_TARGET_NO_ACTION
= 0,
1291 CALC_TARGET_NEED_RESEND
,
1292 CALC_TARGET_POOL_DNE
,
1295 static enum calc_target_result
calc_target(struct ceph_osd_client
*osdc
,
1296 struct ceph_osd_request_target
*t
,
1297 u32
*last_force_resend
,
1300 struct ceph_pg_pool_info
*pi
;
1301 struct ceph_pg pgid
, last_pgid
;
1302 struct ceph_osds up
, acting
;
1303 bool force_resend
= false;
1304 bool need_check_tiering
= false;
1305 bool need_resend
= false;
1306 bool sort_bitwise
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_SORTBITWISE
);
1307 enum calc_target_result ct_res
;
1310 pi
= ceph_pg_pool_by_id(osdc
->osdmap
, t
->base_oloc
.pool
);
1312 t
->osd
= CEPH_HOMELESS_OSD
;
1313 ct_res
= CALC_TARGET_POOL_DNE
;
1317 if (osdc
->osdmap
->epoch
== pi
->last_force_request_resend
) {
1318 if (last_force_resend
&&
1319 *last_force_resend
< pi
->last_force_request_resend
) {
1320 *last_force_resend
= pi
->last_force_request_resend
;
1321 force_resend
= true;
1322 } else if (!last_force_resend
) {
1323 force_resend
= true;
1326 if (ceph_oid_empty(&t
->target_oid
) || force_resend
) {
1327 ceph_oid_copy(&t
->target_oid
, &t
->base_oid
);
1328 need_check_tiering
= true;
1330 if (ceph_oloc_empty(&t
->target_oloc
) || force_resend
) {
1331 ceph_oloc_copy(&t
->target_oloc
, &t
->base_oloc
);
1332 need_check_tiering
= true;
1335 if (need_check_tiering
&&
1336 (t
->flags
& CEPH_OSD_FLAG_IGNORE_OVERLAY
) == 0) {
1337 if (t
->flags
& CEPH_OSD_FLAG_READ
&& pi
->read_tier
>= 0)
1338 t
->target_oloc
.pool
= pi
->read_tier
;
1339 if (t
->flags
& CEPH_OSD_FLAG_WRITE
&& pi
->write_tier
>= 0)
1340 t
->target_oloc
.pool
= pi
->write_tier
;
1343 ret
= ceph_object_locator_to_pg(osdc
->osdmap
, &t
->target_oid
,
1344 &t
->target_oloc
, &pgid
);
1346 WARN_ON(ret
!= -ENOENT
);
1347 t
->osd
= CEPH_HOMELESS_OSD
;
1348 ct_res
= CALC_TARGET_POOL_DNE
;
1351 last_pgid
.pool
= pgid
.pool
;
1352 last_pgid
.seed
= ceph_stable_mod(pgid
.seed
, t
->pg_num
, t
->pg_num_mask
);
1354 ceph_pg_to_up_acting_osds(osdc
->osdmap
, &pgid
, &up
, &acting
);
1356 ceph_is_new_interval(&t
->acting
,
1369 force_resend
= true;
1371 if (t
->paused
&& !target_should_be_paused(osdc
, t
, pi
)) {
1376 if (ceph_pg_compare(&t
->pgid
, &pgid
) ||
1377 ceph_osds_changed(&t
->acting
, &acting
, any_change
) ||
1379 t
->pgid
= pgid
; /* struct */
1380 ceph_osds_copy(&t
->acting
, &acting
);
1381 ceph_osds_copy(&t
->up
, &up
);
1383 t
->min_size
= pi
->min_size
;
1384 t
->pg_num
= pi
->pg_num
;
1385 t
->pg_num_mask
= pi
->pg_num_mask
;
1386 t
->sort_bitwise
= sort_bitwise
;
1388 t
->osd
= acting
.primary
;
1392 ct_res
= need_resend
? CALC_TARGET_NEED_RESEND
: CALC_TARGET_NO_ACTION
;
1394 dout("%s t %p -> ct_res %d osd %d\n", __func__
, t
, ct_res
, t
->osd
);
1398 static void setup_request_data(struct ceph_osd_request
*req
,
1399 struct ceph_msg
*msg
)
1404 if (!list_empty(&msg
->data
))
1407 WARN_ON(msg
->data_length
);
1408 for (i
= 0; i
< req
->r_num_ops
; i
++) {
1409 struct ceph_osd_req_op
*op
= &req
->r_ops
[i
];
1413 case CEPH_OSD_OP_WRITE
:
1414 case CEPH_OSD_OP_WRITEFULL
:
1415 WARN_ON(op
->indata_len
!= op
->extent
.length
);
1416 ceph_osdc_msg_data_add(msg
, &op
->extent
.osd_data
);
1418 case CEPH_OSD_OP_SETXATTR
:
1419 case CEPH_OSD_OP_CMPXATTR
:
1420 WARN_ON(op
->indata_len
!= op
->xattr
.name_len
+
1421 op
->xattr
.value_len
);
1422 ceph_osdc_msg_data_add(msg
, &op
->xattr
.osd_data
);
1424 case CEPH_OSD_OP_NOTIFY_ACK
:
1425 ceph_osdc_msg_data_add(msg
,
1426 &op
->notify_ack
.request_data
);
1430 case CEPH_OSD_OP_STAT
:
1431 ceph_osdc_msg_data_add(req
->r_reply
,
1434 case CEPH_OSD_OP_READ
:
1435 ceph_osdc_msg_data_add(req
->r_reply
,
1436 &op
->extent
.osd_data
);
1440 case CEPH_OSD_OP_CALL
:
1441 WARN_ON(op
->indata_len
!= op
->cls
.class_len
+
1442 op
->cls
.method_len
+
1443 op
->cls
.indata_len
);
1444 ceph_osdc_msg_data_add(msg
, &op
->cls
.request_info
);
1445 /* optional, can be NONE */
1446 ceph_osdc_msg_data_add(msg
, &op
->cls
.request_data
);
1447 /* optional, can be NONE */
1448 ceph_osdc_msg_data_add(req
->r_reply
,
1449 &op
->cls
.response_data
);
1451 case CEPH_OSD_OP_NOTIFY
:
1452 ceph_osdc_msg_data_add(msg
,
1453 &op
->notify
.request_data
);
1454 ceph_osdc_msg_data_add(req
->r_reply
,
1455 &op
->notify
.response_data
);
1459 data_len
+= op
->indata_len
;
1462 WARN_ON(data_len
!= msg
->data_length
);
1465 static void encode_request(struct ceph_osd_request
*req
, struct ceph_msg
*msg
)
1467 void *p
= msg
->front
.iov_base
;
1468 void *const end
= p
+ msg
->front_alloc_len
;
1472 if (req
->r_flags
& CEPH_OSD_FLAG_WRITE
) {
1473 /* snapshots aren't writeable */
1474 WARN_ON(req
->r_snapid
!= CEPH_NOSNAP
);
1476 WARN_ON(req
->r_mtime
.tv_sec
|| req
->r_mtime
.tv_nsec
||
1477 req
->r_data_offset
|| req
->r_snapc
);
1480 setup_request_data(req
, msg
);
1482 ceph_encode_32(&p
, 1); /* client_inc, always 1 */
1483 ceph_encode_32(&p
, req
->r_osdc
->osdmap
->epoch
);
1484 ceph_encode_32(&p
, req
->r_flags
);
1485 ceph_encode_timespec(p
, &req
->r_mtime
);
1486 p
+= sizeof(struct ceph_timespec
);
1487 /* aka reassert_version */
1488 memcpy(p
, &req
->r_replay_version
, sizeof(req
->r_replay_version
));
1489 p
+= sizeof(req
->r_replay_version
);
1492 ceph_encode_8(&p
, 4);
1493 ceph_encode_8(&p
, 4);
1494 ceph_encode_32(&p
, 8 + 4 + 4);
1495 ceph_encode_64(&p
, req
->r_t
.target_oloc
.pool
);
1496 ceph_encode_32(&p
, -1); /* preferred */
1497 ceph_encode_32(&p
, 0); /* key len */
1500 ceph_encode_8(&p
, 1);
1501 ceph_encode_64(&p
, req
->r_t
.pgid
.pool
);
1502 ceph_encode_32(&p
, req
->r_t
.pgid
.seed
);
1503 ceph_encode_32(&p
, -1); /* preferred */
1506 ceph_encode_32(&p
, req
->r_t
.target_oid
.name_len
);
1507 memcpy(p
, req
->r_t
.target_oid
.name
, req
->r_t
.target_oid
.name_len
);
1508 p
+= req
->r_t
.target_oid
.name_len
;
1510 /* ops, can imply data */
1511 ceph_encode_16(&p
, req
->r_num_ops
);
1512 for (i
= 0; i
< req
->r_num_ops
; i
++) {
1513 data_len
+= osd_req_encode_op(p
, &req
->r_ops
[i
]);
1514 p
+= sizeof(struct ceph_osd_op
);
1517 ceph_encode_64(&p
, req
->r_snapid
); /* snapid */
1519 ceph_encode_64(&p
, req
->r_snapc
->seq
);
1520 ceph_encode_32(&p
, req
->r_snapc
->num_snaps
);
1521 for (i
= 0; i
< req
->r_snapc
->num_snaps
; i
++)
1522 ceph_encode_64(&p
, req
->r_snapc
->snaps
[i
]);
1524 ceph_encode_64(&p
, 0); /* snap_seq */
1525 ceph_encode_32(&p
, 0); /* snaps len */
1528 ceph_encode_32(&p
, req
->r_attempts
); /* retry_attempt */
1531 msg
->front
.iov_len
= p
- msg
->front
.iov_base
;
1532 msg
->hdr
.version
= cpu_to_le16(4); /* MOSDOp v4 */
1533 msg
->hdr
.front_len
= cpu_to_le32(msg
->front
.iov_len
);
1534 msg
->hdr
.data_len
= cpu_to_le32(data_len
);
1536 * The header "data_off" is a hint to the receiver allowing it
1537 * to align received data into its buffers such that there's no
1538 * need to re-copy it before writing it to disk (direct I/O).
1540 msg
->hdr
.data_off
= cpu_to_le16(req
->r_data_offset
);
1542 dout("%s req %p oid %s oid_len %d front %zu data %u\n", __func__
,
1543 req
, req
->r_t
.target_oid
.name
, req
->r_t
.target_oid
.name_len
,
1544 msg
->front
.iov_len
, data_len
);
1548 * @req has to be assigned a tid and registered.
1550 static void send_request(struct ceph_osd_request
*req
)
1552 struct ceph_osd
*osd
= req
->r_osd
;
1554 verify_osd_locked(osd
);
1555 WARN_ON(osd
->o_osd
!= req
->r_t
.osd
);
1558 * We may have a previously queued request message hanging
1559 * around. Cancel it to avoid corrupting the msgr.
1562 ceph_msg_revoke(req
->r_request
);
1564 req
->r_flags
|= CEPH_OSD_FLAG_KNOWN_REDIR
;
1565 if (req
->r_attempts
)
1566 req
->r_flags
|= CEPH_OSD_FLAG_RETRY
;
1568 WARN_ON(req
->r_flags
& CEPH_OSD_FLAG_RETRY
);
1570 encode_request(req
, req
->r_request
);
1572 dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n",
1573 __func__
, req
, req
->r_tid
, req
->r_t
.pgid
.pool
, req
->r_t
.pgid
.seed
,
1574 req
->r_t
.osd
, req
->r_flags
, req
->r_attempts
);
1576 req
->r_t
.paused
= false;
1577 req
->r_stamp
= jiffies
;
1580 req
->r_sent
= osd
->o_incarnation
;
1581 req
->r_request
->hdr
.tid
= cpu_to_le64(req
->r_tid
);
1582 ceph_con_send(&osd
->o_con
, ceph_msg_get(req
->r_request
));
1585 static void maybe_request_map(struct ceph_osd_client
*osdc
)
1587 bool continuous
= false;
1589 verify_osdc_locked(osdc
);
1590 WARN_ON(!osdc
->osdmap
->epoch
);
1592 if (ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
1593 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
) ||
1594 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
)) {
1595 dout("%s osdc %p continuous\n", __func__
, osdc
);
1598 dout("%s osdc %p onetime\n", __func__
, osdc
);
1601 if (ceph_monc_want_map(&osdc
->client
->monc
, CEPH_SUB_OSDMAP
,
1602 osdc
->osdmap
->epoch
+ 1, continuous
))
1603 ceph_monc_renew_subs(&osdc
->client
->monc
);
1606 static void send_map_check(struct ceph_osd_request
*req
);
1608 static void __submit_request(struct ceph_osd_request
*req
, bool wrlocked
)
1610 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1611 struct ceph_osd
*osd
;
1612 enum calc_target_result ct_res
;
1613 bool need_send
= false;
1614 bool promoted
= false;
1616 WARN_ON(req
->r_tid
|| req
->r_got_reply
);
1617 dout("%s req %p wrlocked %d\n", __func__
, req
, wrlocked
);
1620 ct_res
= calc_target(osdc
, &req
->r_t
, &req
->r_last_force_resend
, false);
1621 if (ct_res
== CALC_TARGET_POOL_DNE
&& !wrlocked
)
1624 osd
= lookup_create_osd(osdc
, req
->r_t
.osd
, wrlocked
);
1626 WARN_ON(PTR_ERR(osd
) != -EAGAIN
|| wrlocked
);
1630 if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) &&
1631 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
)) {
1632 dout("req %p pausewr\n", req
);
1633 req
->r_t
.paused
= true;
1634 maybe_request_map(osdc
);
1635 } else if ((req
->r_flags
& CEPH_OSD_FLAG_READ
) &&
1636 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
)) {
1637 dout("req %p pauserd\n", req
);
1638 req
->r_t
.paused
= true;
1639 maybe_request_map(osdc
);
1640 } else if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) &&
1641 !(req
->r_flags
& (CEPH_OSD_FLAG_FULL_TRY
|
1642 CEPH_OSD_FLAG_FULL_FORCE
)) &&
1643 (ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
1644 pool_full(osdc
, req
->r_t
.base_oloc
.pool
))) {
1645 dout("req %p full/pool_full\n", req
);
1646 pr_warn_ratelimited("FULL or reached pool quota\n");
1647 req
->r_t
.paused
= true;
1648 maybe_request_map(osdc
);
1649 } else if (!osd_homeless(osd
)) {
1652 maybe_request_map(osdc
);
1655 mutex_lock(&osd
->lock
);
1657 * Assign the tid atomically with send_request() to protect
1658 * multiple writes to the same object from racing with each
1659 * other, resulting in out of order ops on the OSDs.
1661 req
->r_tid
= atomic64_inc_return(&osdc
->last_tid
);
1662 link_request(osd
, req
);
1665 mutex_unlock(&osd
->lock
);
1667 if (ct_res
== CALC_TARGET_POOL_DNE
)
1668 send_map_check(req
);
1671 downgrade_write(&osdc
->lock
);
1675 up_read(&osdc
->lock
);
1676 down_write(&osdc
->lock
);
1682 static void account_request(struct ceph_osd_request
*req
)
1684 unsigned int mask
= CEPH_OSD_FLAG_ACK
| CEPH_OSD_FLAG_ONDISK
;
1686 if (req
->r_flags
& CEPH_OSD_FLAG_READ
) {
1687 WARN_ON(req
->r_flags
& mask
);
1688 req
->r_flags
|= CEPH_OSD_FLAG_ACK
;
1689 } else if (req
->r_flags
& CEPH_OSD_FLAG_WRITE
)
1690 WARN_ON(!(req
->r_flags
& mask
));
1694 WARN_ON(req
->r_unsafe_callback
&& (req
->r_flags
& mask
) != mask
);
1695 atomic_inc(&req
->r_osdc
->num_requests
);
1698 static void submit_request(struct ceph_osd_request
*req
, bool wrlocked
)
1700 ceph_osdc_get_request(req
);
1701 account_request(req
);
1702 __submit_request(req
, wrlocked
);
1705 static void __finish_request(struct ceph_osd_request
*req
)
1707 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1708 struct ceph_osd
*osd
= req
->r_osd
;
1710 verify_osd_locked(osd
);
1711 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
1713 WARN_ON(lookup_request_mc(&osdc
->map_checks
, req
->r_tid
));
1714 unlink_request(osd
, req
);
1715 atomic_dec(&osdc
->num_requests
);
1718 * If an OSD has failed or returned and a request has been sent
1719 * twice, it's possible to get a reply and end up here while the
1720 * request message is queued for delivery. We will ignore the
1721 * reply, so not a big deal, but better to try and catch it.
1723 ceph_msg_revoke(req
->r_request
);
1724 ceph_msg_revoke_incoming(req
->r_reply
);
1727 static void finish_request(struct ceph_osd_request
*req
)
1729 __finish_request(req
);
1730 ceph_osdc_put_request(req
);
1733 static void __complete_request(struct ceph_osd_request
*req
)
1735 if (req
->r_callback
)
1736 req
->r_callback(req
);
1738 complete_all(&req
->r_completion
);
1742 * Note that this is open-coded in handle_reply(), which has to deal
1743 * with ack vs commit, dup acks, etc.
1745 static void complete_request(struct ceph_osd_request
*req
, int err
)
1747 dout("%s req %p tid %llu err %d\n", __func__
, req
, req
->r_tid
, err
);
1749 req
->r_result
= err
;
1750 __finish_request(req
);
1751 __complete_request(req
);
1752 complete_all(&req
->r_safe_completion
);
1753 ceph_osdc_put_request(req
);
1756 static void cancel_map_check(struct ceph_osd_request
*req
)
1758 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1759 struct ceph_osd_request
*lookup_req
;
1761 verify_osdc_wrlocked(osdc
);
1763 lookup_req
= lookup_request_mc(&osdc
->map_checks
, req
->r_tid
);
1767 WARN_ON(lookup_req
!= req
);
1768 erase_request_mc(&osdc
->map_checks
, req
);
1769 ceph_osdc_put_request(req
);
1772 static void cancel_request(struct ceph_osd_request
*req
)
1774 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
1776 cancel_map_check(req
);
1777 finish_request(req
);
1780 static void check_pool_dne(struct ceph_osd_request
*req
)
1782 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1783 struct ceph_osdmap
*map
= osdc
->osdmap
;
1785 verify_osdc_wrlocked(osdc
);
1786 WARN_ON(!map
->epoch
);
1788 if (req
->r_attempts
) {
1790 * We sent a request earlier, which means that
1791 * previously the pool existed, and now it does not
1792 * (i.e., it was deleted).
1794 req
->r_map_dne_bound
= map
->epoch
;
1795 dout("%s req %p tid %llu pool disappeared\n", __func__
, req
,
1798 dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__
,
1799 req
, req
->r_tid
, req
->r_map_dne_bound
, map
->epoch
);
1802 if (req
->r_map_dne_bound
) {
1803 if (map
->epoch
>= req
->r_map_dne_bound
) {
1804 /* we had a new enough map */
1805 pr_info_ratelimited("tid %llu pool does not exist\n",
1807 complete_request(req
, -ENOENT
);
1810 send_map_check(req
);
1814 static void map_check_cb(struct ceph_mon_generic_request
*greq
)
1816 struct ceph_osd_client
*osdc
= &greq
->monc
->client
->osdc
;
1817 struct ceph_osd_request
*req
;
1818 u64 tid
= greq
->private_data
;
1820 WARN_ON(greq
->result
|| !greq
->u
.newest
);
1822 down_write(&osdc
->lock
);
1823 req
= lookup_request_mc(&osdc
->map_checks
, tid
);
1825 dout("%s tid %llu dne\n", __func__
, tid
);
1829 dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__
,
1830 req
, req
->r_tid
, req
->r_map_dne_bound
, greq
->u
.newest
);
1831 if (!req
->r_map_dne_bound
)
1832 req
->r_map_dne_bound
= greq
->u
.newest
;
1833 erase_request_mc(&osdc
->map_checks
, req
);
1834 check_pool_dne(req
);
1836 ceph_osdc_put_request(req
);
1838 up_write(&osdc
->lock
);
1841 static void send_map_check(struct ceph_osd_request
*req
)
1843 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1844 struct ceph_osd_request
*lookup_req
;
1847 verify_osdc_wrlocked(osdc
);
1849 lookup_req
= lookup_request_mc(&osdc
->map_checks
, req
->r_tid
);
1851 WARN_ON(lookup_req
!= req
);
1855 ceph_osdc_get_request(req
);
1856 insert_request_mc(&osdc
->map_checks
, req
);
1857 ret
= ceph_monc_get_version_async(&osdc
->client
->monc
, "osdmap",
1858 map_check_cb
, req
->r_tid
);
1863 * lingering requests, watch/notify v2 infrastructure
1865 static void linger_release(struct kref
*kref
)
1867 struct ceph_osd_linger_request
*lreq
=
1868 container_of(kref
, struct ceph_osd_linger_request
, kref
);
1870 dout("%s lreq %p reg_req %p ping_req %p\n", __func__
, lreq
,
1871 lreq
->reg_req
, lreq
->ping_req
);
1872 WARN_ON(!RB_EMPTY_NODE(&lreq
->node
));
1873 WARN_ON(!RB_EMPTY_NODE(&lreq
->osdc_node
));
1874 WARN_ON(!RB_EMPTY_NODE(&lreq
->mc_node
));
1875 WARN_ON(!list_empty(&lreq
->scan_item
));
1876 WARN_ON(!list_empty(&lreq
->pending_lworks
));
1880 ceph_osdc_put_request(lreq
->reg_req
);
1882 ceph_osdc_put_request(lreq
->ping_req
);
1883 target_destroy(&lreq
->t
);
1887 static void linger_put(struct ceph_osd_linger_request
*lreq
)
1890 kref_put(&lreq
->kref
, linger_release
);
1893 static struct ceph_osd_linger_request
*
1894 linger_get(struct ceph_osd_linger_request
*lreq
)
1896 kref_get(&lreq
->kref
);
1900 static struct ceph_osd_linger_request
*
1901 linger_alloc(struct ceph_osd_client
*osdc
)
1903 struct ceph_osd_linger_request
*lreq
;
1905 lreq
= kzalloc(sizeof(*lreq
), GFP_NOIO
);
1909 kref_init(&lreq
->kref
);
1910 mutex_init(&lreq
->lock
);
1911 RB_CLEAR_NODE(&lreq
->node
);
1912 RB_CLEAR_NODE(&lreq
->osdc_node
);
1913 RB_CLEAR_NODE(&lreq
->mc_node
);
1914 INIT_LIST_HEAD(&lreq
->scan_item
);
1915 INIT_LIST_HEAD(&lreq
->pending_lworks
);
1916 init_completion(&lreq
->reg_commit_wait
);
1917 init_completion(&lreq
->notify_finish_wait
);
1920 target_init(&lreq
->t
);
1922 dout("%s lreq %p\n", __func__
, lreq
);
1926 DEFINE_RB_INSDEL_FUNCS(linger
, struct ceph_osd_linger_request
, linger_id
, node
)
1927 DEFINE_RB_FUNCS(linger_osdc
, struct ceph_osd_linger_request
, linger_id
, osdc_node
)
1928 DEFINE_RB_FUNCS(linger_mc
, struct ceph_osd_linger_request
, linger_id
, mc_node
)
1931 * Create linger request <-> OSD session relation.
1933 * @lreq has to be registered, @osd may be homeless.
1935 static void link_linger(struct ceph_osd
*osd
,
1936 struct ceph_osd_linger_request
*lreq
)
1938 verify_osd_locked(osd
);
1939 WARN_ON(!lreq
->linger_id
|| lreq
->osd
);
1940 dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__
, osd
,
1941 osd
->o_osd
, lreq
, lreq
->linger_id
);
1943 if (!osd_homeless(osd
))
1944 __remove_osd_from_lru(osd
);
1946 atomic_inc(&osd
->o_osdc
->num_homeless
);
1949 insert_linger(&osd
->o_linger_requests
, lreq
);
1953 static void unlink_linger(struct ceph_osd
*osd
,
1954 struct ceph_osd_linger_request
*lreq
)
1956 verify_osd_locked(osd
);
1957 WARN_ON(lreq
->osd
!= osd
);
1958 dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__
, osd
,
1959 osd
->o_osd
, lreq
, lreq
->linger_id
);
1962 erase_linger(&osd
->o_linger_requests
, lreq
);
1965 if (!osd_homeless(osd
))
1966 maybe_move_osd_to_lru(osd
);
1968 atomic_dec(&osd
->o_osdc
->num_homeless
);
1971 static bool __linger_registered(struct ceph_osd_linger_request
*lreq
)
1973 verify_osdc_locked(lreq
->osdc
);
1975 return !RB_EMPTY_NODE(&lreq
->osdc_node
);
1978 static bool linger_registered(struct ceph_osd_linger_request
*lreq
)
1980 struct ceph_osd_client
*osdc
= lreq
->osdc
;
1983 down_read(&osdc
->lock
);
1984 registered
= __linger_registered(lreq
);
1985 up_read(&osdc
->lock
);
1990 static void linger_register(struct ceph_osd_linger_request
*lreq
)
1992 struct ceph_osd_client
*osdc
= lreq
->osdc
;
1994 verify_osdc_wrlocked(osdc
);
1995 WARN_ON(lreq
->linger_id
);
1998 lreq
->linger_id
= ++osdc
->last_linger_id
;
1999 insert_linger_osdc(&osdc
->linger_requests
, lreq
);
2002 static void linger_unregister(struct ceph_osd_linger_request
*lreq
)
2004 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2006 verify_osdc_wrlocked(osdc
);
2008 erase_linger_osdc(&osdc
->linger_requests
, lreq
);
2012 static void cancel_linger_request(struct ceph_osd_request
*req
)
2014 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2016 WARN_ON(!req
->r_linger
);
2017 cancel_request(req
);
2021 struct linger_work
{
2022 struct work_struct work
;
2023 struct ceph_osd_linger_request
*lreq
;
2024 struct list_head pending_item
;
2025 unsigned long queued_stamp
;
2031 void *payload
; /* points into @msg front */
2034 struct ceph_msg
*msg
; /* for ceph_msg_put() */
2042 static struct linger_work
*lwork_alloc(struct ceph_osd_linger_request
*lreq
,
2045 struct linger_work
*lwork
;
2047 lwork
= kzalloc(sizeof(*lwork
), GFP_NOIO
);
2051 INIT_WORK(&lwork
->work
, workfn
);
2052 INIT_LIST_HEAD(&lwork
->pending_item
);
2053 lwork
->lreq
= linger_get(lreq
);
2058 static void lwork_free(struct linger_work
*lwork
)
2060 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2062 mutex_lock(&lreq
->lock
);
2063 list_del(&lwork
->pending_item
);
2064 mutex_unlock(&lreq
->lock
);
2070 static void lwork_queue(struct linger_work
*lwork
)
2072 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2073 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2075 verify_lreq_locked(lreq
);
2076 WARN_ON(!list_empty(&lwork
->pending_item
));
2078 lwork
->queued_stamp
= jiffies
;
2079 list_add_tail(&lwork
->pending_item
, &lreq
->pending_lworks
);
2080 queue_work(osdc
->notify_wq
, &lwork
->work
);
2083 static void do_watch_notify(struct work_struct
*w
)
2085 struct linger_work
*lwork
= container_of(w
, struct linger_work
, work
);
2086 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2088 if (!linger_registered(lreq
)) {
2089 dout("%s lreq %p not registered\n", __func__
, lreq
);
2093 WARN_ON(!lreq
->is_watch
);
2094 dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n",
2095 __func__
, lreq
, lwork
->notify
.notify_id
, lwork
->notify
.notifier_id
,
2096 lwork
->notify
.payload_len
);
2097 lreq
->wcb(lreq
->data
, lwork
->notify
.notify_id
, lreq
->linger_id
,
2098 lwork
->notify
.notifier_id
, lwork
->notify
.payload
,
2099 lwork
->notify
.payload_len
);
2102 ceph_msg_put(lwork
->notify
.msg
);
2106 static void do_watch_error(struct work_struct
*w
)
2108 struct linger_work
*lwork
= container_of(w
, struct linger_work
, work
);
2109 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2111 if (!linger_registered(lreq
)) {
2112 dout("%s lreq %p not registered\n", __func__
, lreq
);
2116 dout("%s lreq %p err %d\n", __func__
, lreq
, lwork
->error
.err
);
2117 lreq
->errcb(lreq
->data
, lreq
->linger_id
, lwork
->error
.err
);
2123 static void queue_watch_error(struct ceph_osd_linger_request
*lreq
)
2125 struct linger_work
*lwork
;
2127 lwork
= lwork_alloc(lreq
, do_watch_error
);
2129 pr_err("failed to allocate error-lwork\n");
2133 lwork
->error
.err
= lreq
->last_error
;
2137 static void linger_reg_commit_complete(struct ceph_osd_linger_request
*lreq
,
2140 if (!completion_done(&lreq
->reg_commit_wait
)) {
2141 lreq
->reg_commit_error
= (result
<= 0 ? result
: 0);
2142 complete_all(&lreq
->reg_commit_wait
);
2146 static void linger_commit_cb(struct ceph_osd_request
*req
)
2148 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2150 mutex_lock(&lreq
->lock
);
2151 dout("%s lreq %p linger_id %llu result %d\n", __func__
, lreq
,
2152 lreq
->linger_id
, req
->r_result
);
2153 WARN_ON(!__linger_registered(lreq
));
2154 linger_reg_commit_complete(lreq
, req
->r_result
);
2155 lreq
->committed
= true;
2157 if (!lreq
->is_watch
) {
2158 struct ceph_osd_data
*osd_data
=
2159 osd_req_op_data(req
, 0, notify
, response_data
);
2160 void *p
= page_address(osd_data
->pages
[0]);
2162 WARN_ON(req
->r_ops
[0].op
!= CEPH_OSD_OP_NOTIFY
||
2163 osd_data
->type
!= CEPH_OSD_DATA_TYPE_PAGES
);
2165 /* make note of the notify_id */
2166 if (req
->r_ops
[0].outdata_len
>= sizeof(u64
)) {
2167 lreq
->notify_id
= ceph_decode_64(&p
);
2168 dout("lreq %p notify_id %llu\n", lreq
,
2171 dout("lreq %p no notify_id\n", lreq
);
2175 mutex_unlock(&lreq
->lock
);
2179 static int normalize_watch_error(int err
)
2182 * Translate ENOENT -> ENOTCONN so that a delete->disconnection
2183 * notification and a failure to reconnect because we raced with
2184 * the delete appear the same to the user.
2192 static void linger_reconnect_cb(struct ceph_osd_request
*req
)
2194 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2196 mutex_lock(&lreq
->lock
);
2197 dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__
,
2198 lreq
, lreq
->linger_id
, req
->r_result
, lreq
->last_error
);
2199 if (req
->r_result
< 0) {
2200 if (!lreq
->last_error
) {
2201 lreq
->last_error
= normalize_watch_error(req
->r_result
);
2202 queue_watch_error(lreq
);
2206 mutex_unlock(&lreq
->lock
);
2210 static void send_linger(struct ceph_osd_linger_request
*lreq
)
2212 struct ceph_osd_request
*req
= lreq
->reg_req
;
2213 struct ceph_osd_req_op
*op
= &req
->r_ops
[0];
2215 verify_osdc_wrlocked(req
->r_osdc
);
2216 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
, lreq
->linger_id
);
2219 cancel_linger_request(req
);
2221 request_reinit(req
);
2222 ceph_oid_copy(&req
->r_base_oid
, &lreq
->t
.base_oid
);
2223 ceph_oloc_copy(&req
->r_base_oloc
, &lreq
->t
.base_oloc
);
2224 req
->r_flags
= lreq
->t
.flags
;
2225 req
->r_mtime
= lreq
->mtime
;
2227 mutex_lock(&lreq
->lock
);
2228 if (lreq
->is_watch
&& lreq
->committed
) {
2229 WARN_ON(op
->op
!= CEPH_OSD_OP_WATCH
||
2230 op
->watch
.cookie
!= lreq
->linger_id
);
2231 op
->watch
.op
= CEPH_OSD_WATCH_OP_RECONNECT
;
2232 op
->watch
.gen
= ++lreq
->register_gen
;
2233 dout("lreq %p reconnect register_gen %u\n", lreq
,
2235 req
->r_callback
= linger_reconnect_cb
;
2237 if (!lreq
->is_watch
)
2238 lreq
->notify_id
= 0;
2240 WARN_ON(op
->watch
.op
!= CEPH_OSD_WATCH_OP_WATCH
);
2241 dout("lreq %p register\n", lreq
);
2242 req
->r_callback
= linger_commit_cb
;
2244 mutex_unlock(&lreq
->lock
);
2246 req
->r_priv
= linger_get(lreq
);
2247 req
->r_linger
= true;
2249 submit_request(req
, true);
2252 static void linger_ping_cb(struct ceph_osd_request
*req
)
2254 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2256 mutex_lock(&lreq
->lock
);
2257 dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n",
2258 __func__
, lreq
, lreq
->linger_id
, req
->r_result
, lreq
->ping_sent
,
2260 if (lreq
->register_gen
== req
->r_ops
[0].watch
.gen
) {
2261 if (!req
->r_result
) {
2262 lreq
->watch_valid_thru
= lreq
->ping_sent
;
2263 } else if (!lreq
->last_error
) {
2264 lreq
->last_error
= normalize_watch_error(req
->r_result
);
2265 queue_watch_error(lreq
);
2268 dout("lreq %p register_gen %u ignoring old pong %u\n", lreq
,
2269 lreq
->register_gen
, req
->r_ops
[0].watch
.gen
);
2272 mutex_unlock(&lreq
->lock
);
2276 static void send_linger_ping(struct ceph_osd_linger_request
*lreq
)
2278 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2279 struct ceph_osd_request
*req
= lreq
->ping_req
;
2280 struct ceph_osd_req_op
*op
= &req
->r_ops
[0];
2282 if (ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
)) {
2283 dout("%s PAUSERD\n", __func__
);
2287 lreq
->ping_sent
= jiffies
;
2288 dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n",
2289 __func__
, lreq
, lreq
->linger_id
, lreq
->ping_sent
,
2290 lreq
->register_gen
);
2293 cancel_linger_request(req
);
2295 request_reinit(req
);
2296 target_copy(&req
->r_t
, &lreq
->t
);
2298 WARN_ON(op
->op
!= CEPH_OSD_OP_WATCH
||
2299 op
->watch
.cookie
!= lreq
->linger_id
||
2300 op
->watch
.op
!= CEPH_OSD_WATCH_OP_PING
);
2301 op
->watch
.gen
= lreq
->register_gen
;
2302 req
->r_callback
= linger_ping_cb
;
2303 req
->r_priv
= linger_get(lreq
);
2304 req
->r_linger
= true;
2306 ceph_osdc_get_request(req
);
2307 account_request(req
);
2308 req
->r_tid
= atomic64_inc_return(&osdc
->last_tid
);
2309 link_request(lreq
->osd
, req
);
2313 static void linger_submit(struct ceph_osd_linger_request
*lreq
)
2315 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2316 struct ceph_osd
*osd
;
2318 calc_target(osdc
, &lreq
->t
, &lreq
->last_force_resend
, false);
2319 osd
= lookup_create_osd(osdc
, lreq
->t
.osd
, true);
2320 link_linger(osd
, lreq
);
2325 static void cancel_linger_map_check(struct ceph_osd_linger_request
*lreq
)
2327 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2328 struct ceph_osd_linger_request
*lookup_lreq
;
2330 verify_osdc_wrlocked(osdc
);
2332 lookup_lreq
= lookup_linger_mc(&osdc
->linger_map_checks
,
2337 WARN_ON(lookup_lreq
!= lreq
);
2338 erase_linger_mc(&osdc
->linger_map_checks
, lreq
);
2343 * @lreq has to be both registered and linked.
2345 static void __linger_cancel(struct ceph_osd_linger_request
*lreq
)
2347 if (lreq
->is_watch
&& lreq
->ping_req
->r_osd
)
2348 cancel_linger_request(lreq
->ping_req
);
2349 if (lreq
->reg_req
->r_osd
)
2350 cancel_linger_request(lreq
->reg_req
);
2351 cancel_linger_map_check(lreq
);
2352 unlink_linger(lreq
->osd
, lreq
);
2353 linger_unregister(lreq
);
2356 static void linger_cancel(struct ceph_osd_linger_request
*lreq
)
2358 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2360 down_write(&osdc
->lock
);
2361 if (__linger_registered(lreq
))
2362 __linger_cancel(lreq
);
2363 up_write(&osdc
->lock
);
2366 static void send_linger_map_check(struct ceph_osd_linger_request
*lreq
);
2368 static void check_linger_pool_dne(struct ceph_osd_linger_request
*lreq
)
2370 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2371 struct ceph_osdmap
*map
= osdc
->osdmap
;
2373 verify_osdc_wrlocked(osdc
);
2374 WARN_ON(!map
->epoch
);
2376 if (lreq
->register_gen
) {
2377 lreq
->map_dne_bound
= map
->epoch
;
2378 dout("%s lreq %p linger_id %llu pool disappeared\n", __func__
,
2379 lreq
, lreq
->linger_id
);
2381 dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n",
2382 __func__
, lreq
, lreq
->linger_id
, lreq
->map_dne_bound
,
2386 if (lreq
->map_dne_bound
) {
2387 if (map
->epoch
>= lreq
->map_dne_bound
) {
2388 /* we had a new enough map */
2389 pr_info("linger_id %llu pool does not exist\n",
2391 linger_reg_commit_complete(lreq
, -ENOENT
);
2392 __linger_cancel(lreq
);
2395 send_linger_map_check(lreq
);
2399 static void linger_map_check_cb(struct ceph_mon_generic_request
*greq
)
2401 struct ceph_osd_client
*osdc
= &greq
->monc
->client
->osdc
;
2402 struct ceph_osd_linger_request
*lreq
;
2403 u64 linger_id
= greq
->private_data
;
2405 WARN_ON(greq
->result
|| !greq
->u
.newest
);
2407 down_write(&osdc
->lock
);
2408 lreq
= lookup_linger_mc(&osdc
->linger_map_checks
, linger_id
);
2410 dout("%s linger_id %llu dne\n", __func__
, linger_id
);
2414 dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n",
2415 __func__
, lreq
, lreq
->linger_id
, lreq
->map_dne_bound
,
2417 if (!lreq
->map_dne_bound
)
2418 lreq
->map_dne_bound
= greq
->u
.newest
;
2419 erase_linger_mc(&osdc
->linger_map_checks
, lreq
);
2420 check_linger_pool_dne(lreq
);
2424 up_write(&osdc
->lock
);
2427 static void send_linger_map_check(struct ceph_osd_linger_request
*lreq
)
2429 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2430 struct ceph_osd_linger_request
*lookup_lreq
;
2433 verify_osdc_wrlocked(osdc
);
2435 lookup_lreq
= lookup_linger_mc(&osdc
->linger_map_checks
,
2438 WARN_ON(lookup_lreq
!= lreq
);
2443 insert_linger_mc(&osdc
->linger_map_checks
, lreq
);
2444 ret
= ceph_monc_get_version_async(&osdc
->client
->monc
, "osdmap",
2445 linger_map_check_cb
, lreq
->linger_id
);
2449 static int linger_reg_commit_wait(struct ceph_osd_linger_request
*lreq
)
2453 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
, lreq
->linger_id
);
2454 ret
= wait_for_completion_interruptible(&lreq
->reg_commit_wait
);
2455 return ret
?: lreq
->reg_commit_error
;
2458 static int linger_notify_finish_wait(struct ceph_osd_linger_request
*lreq
)
2462 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
, lreq
->linger_id
);
2463 ret
= wait_for_completion_interruptible(&lreq
->notify_finish_wait
);
2464 return ret
?: lreq
->notify_finish_error
;
2468 * Timeout callback, called every N seconds. When 1 or more OSD
2469 * requests has been active for more than N seconds, we send a keepalive
2470 * (tag + timestamp) to its OSD to ensure any communications channel
2471 * reset is detected.
2473 static void handle_timeout(struct work_struct
*work
)
2475 struct ceph_osd_client
*osdc
=
2476 container_of(work
, struct ceph_osd_client
, timeout_work
.work
);
2477 struct ceph_options
*opts
= osdc
->client
->options
;
2478 unsigned long cutoff
= jiffies
- opts
->osd_keepalive_timeout
;
2479 LIST_HEAD(slow_osds
);
2480 struct rb_node
*n
, *p
;
2482 dout("%s osdc %p\n", __func__
, osdc
);
2483 down_write(&osdc
->lock
);
2486 * ping osds that are a bit slow. this ensures that if there
2487 * is a break in the TCP connection we will notice, and reopen
2488 * a connection with that osd (from the fault callback).
2490 for (n
= rb_first(&osdc
->osds
); n
; n
= rb_next(n
)) {
2491 struct ceph_osd
*osd
= rb_entry(n
, struct ceph_osd
, o_node
);
2494 for (p
= rb_first(&osd
->o_requests
); p
; p
= rb_next(p
)) {
2495 struct ceph_osd_request
*req
=
2496 rb_entry(p
, struct ceph_osd_request
, r_node
);
2498 if (time_before(req
->r_stamp
, cutoff
)) {
2499 dout(" req %p tid %llu on osd%d is laggy\n",
2500 req
, req
->r_tid
, osd
->o_osd
);
2504 for (p
= rb_first(&osd
->o_linger_requests
); p
; p
= rb_next(p
)) {
2505 struct ceph_osd_linger_request
*lreq
=
2506 rb_entry(p
, struct ceph_osd_linger_request
, node
);
2508 dout(" lreq %p linger_id %llu is served by osd%d\n",
2509 lreq
, lreq
->linger_id
, osd
->o_osd
);
2512 mutex_lock(&lreq
->lock
);
2513 if (lreq
->is_watch
&& lreq
->committed
&& !lreq
->last_error
)
2514 send_linger_ping(lreq
);
2515 mutex_unlock(&lreq
->lock
);
2519 list_move_tail(&osd
->o_keepalive_item
, &slow_osds
);
2522 if (atomic_read(&osdc
->num_homeless
) || !list_empty(&slow_osds
))
2523 maybe_request_map(osdc
);
2525 while (!list_empty(&slow_osds
)) {
2526 struct ceph_osd
*osd
= list_first_entry(&slow_osds
,
2529 list_del_init(&osd
->o_keepalive_item
);
2530 ceph_con_keepalive(&osd
->o_con
);
2533 up_write(&osdc
->lock
);
2534 schedule_delayed_work(&osdc
->timeout_work
,
2535 osdc
->client
->options
->osd_keepalive_timeout
);
2538 static void handle_osds_timeout(struct work_struct
*work
)
2540 struct ceph_osd_client
*osdc
=
2541 container_of(work
, struct ceph_osd_client
,
2542 osds_timeout_work
.work
);
2543 unsigned long delay
= osdc
->client
->options
->osd_idle_ttl
/ 4;
2544 struct ceph_osd
*osd
, *nosd
;
2546 dout("%s osdc %p\n", __func__
, osdc
);
2547 down_write(&osdc
->lock
);
2548 list_for_each_entry_safe(osd
, nosd
, &osdc
->osd_lru
, o_osd_lru
) {
2549 if (time_before(jiffies
, osd
->lru_ttl
))
2552 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_requests
));
2553 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_linger_requests
));
2557 up_write(&osdc
->lock
);
2558 schedule_delayed_work(&osdc
->osds_timeout_work
,
2559 round_jiffies_relative(delay
));
2562 static int ceph_oloc_decode(void **p
, void *end
,
2563 struct ceph_object_locator
*oloc
)
2565 u8 struct_v
, struct_cv
;
2570 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
2571 struct_v
= ceph_decode_8(p
);
2572 struct_cv
= ceph_decode_8(p
);
2574 pr_warn("got v %d < 3 cv %d of ceph_object_locator\n",
2575 struct_v
, struct_cv
);
2578 if (struct_cv
> 6) {
2579 pr_warn("got v %d cv %d > 6 of ceph_object_locator\n",
2580 struct_v
, struct_cv
);
2583 len
= ceph_decode_32(p
);
2584 ceph_decode_need(p
, end
, len
, e_inval
);
2585 struct_end
= *p
+ len
;
2587 oloc
->pool
= ceph_decode_64(p
);
2588 *p
+= 4; /* skip preferred */
2590 len
= ceph_decode_32(p
);
2592 pr_warn("ceph_object_locator::key is set\n");
2596 if (struct_v
>= 5) {
2597 len
= ceph_decode_32(p
);
2599 pr_warn("ceph_object_locator::nspace is set\n");
2604 if (struct_v
>= 6) {
2605 s64 hash
= ceph_decode_64(p
);
2607 pr_warn("ceph_object_locator::hash is set\n");
2622 static int ceph_redirect_decode(void **p
, void *end
,
2623 struct ceph_request_redirect
*redir
)
2625 u8 struct_v
, struct_cv
;
2630 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
2631 struct_v
= ceph_decode_8(p
);
2632 struct_cv
= ceph_decode_8(p
);
2633 if (struct_cv
> 1) {
2634 pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n",
2635 struct_v
, struct_cv
);
2638 len
= ceph_decode_32(p
);
2639 ceph_decode_need(p
, end
, len
, e_inval
);
2640 struct_end
= *p
+ len
;
2642 ret
= ceph_oloc_decode(p
, end
, &redir
->oloc
);
2646 len
= ceph_decode_32(p
);
2648 pr_warn("ceph_request_redirect::object_name is set\n");
2652 len
= ceph_decode_32(p
);
2653 *p
+= len
; /* skip osd_instructions */
2665 struct MOSDOpReply
{
2666 struct ceph_pg pgid
;
2671 u32 outdata_len
[CEPH_OSD_MAX_OPS
];
2672 s32 rval
[CEPH_OSD_MAX_OPS
];
2674 struct ceph_eversion replay_version
;
2676 struct ceph_request_redirect redirect
;
2679 static int decode_MOSDOpReply(const struct ceph_msg
*msg
, struct MOSDOpReply
*m
)
2681 void *p
= msg
->front
.iov_base
;
2682 void *const end
= p
+ msg
->front
.iov_len
;
2683 u16 version
= le16_to_cpu(msg
->hdr
.version
);
2684 struct ceph_eversion bad_replay_version
;
2690 ceph_decode_32_safe(&p
, end
, len
, e_inval
);
2691 ceph_decode_need(&p
, end
, len
, e_inval
);
2692 p
+= len
; /* skip oid */
2694 ret
= ceph_decode_pgid(&p
, end
, &m
->pgid
);
2698 ceph_decode_64_safe(&p
, end
, m
->flags
, e_inval
);
2699 ceph_decode_32_safe(&p
, end
, m
->result
, e_inval
);
2700 ceph_decode_need(&p
, end
, sizeof(bad_replay_version
), e_inval
);
2701 memcpy(&bad_replay_version
, p
, sizeof(bad_replay_version
));
2702 p
+= sizeof(bad_replay_version
);
2703 ceph_decode_32_safe(&p
, end
, m
->epoch
, e_inval
);
2705 ceph_decode_32_safe(&p
, end
, m
->num_ops
, e_inval
);
2706 if (m
->num_ops
> ARRAY_SIZE(m
->outdata_len
))
2709 ceph_decode_need(&p
, end
, m
->num_ops
* sizeof(struct ceph_osd_op
),
2711 for (i
= 0; i
< m
->num_ops
; i
++) {
2712 struct ceph_osd_op
*op
= p
;
2714 m
->outdata_len
[i
] = le32_to_cpu(op
->payload_len
);
2718 ceph_decode_32_safe(&p
, end
, m
->retry_attempt
, e_inval
);
2719 for (i
= 0; i
< m
->num_ops
; i
++)
2720 ceph_decode_32_safe(&p
, end
, m
->rval
[i
], e_inval
);
2723 ceph_decode_need(&p
, end
, sizeof(m
->replay_version
), e_inval
);
2724 memcpy(&m
->replay_version
, p
, sizeof(m
->replay_version
));
2725 p
+= sizeof(m
->replay_version
);
2726 ceph_decode_64_safe(&p
, end
, m
->user_version
, e_inval
);
2728 m
->replay_version
= bad_replay_version
; /* struct */
2729 m
->user_version
= le64_to_cpu(m
->replay_version
.version
);
2734 ceph_decode_8_safe(&p
, end
, decode_redir
, e_inval
);
2742 ret
= ceph_redirect_decode(&p
, end
, &m
->redirect
);
2746 ceph_oloc_init(&m
->redirect
.oloc
);
2756 * We are done with @req if
2757 * - @m is a safe reply, or
2758 * - @m is an unsafe reply and we didn't want a safe one
2760 static bool done_request(const struct ceph_osd_request
*req
,
2761 const struct MOSDOpReply
*m
)
2763 return (m
->result
< 0 ||
2764 (m
->flags
& CEPH_OSD_FLAG_ONDISK
) ||
2765 !(req
->r_flags
& CEPH_OSD_FLAG_ONDISK
));
2769 * handle osd op reply. either call the callback if it is specified,
2770 * or do the completion to wake up the waiting thread.
2772 * ->r_unsafe_callback is set? yes no
2774 * first reply is OK (needed r_cb/r_completion, r_cb/r_completion,
2775 * any or needed/got safe) r_safe_completion r_safe_completion
2777 * first reply is unsafe r_unsafe_cb(true) (nothing)
2779 * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion,
2780 * r_safe_completion r_safe_completion
2782 static void handle_reply(struct ceph_osd
*osd
, struct ceph_msg
*msg
)
2784 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
2785 struct ceph_osd_request
*req
;
2786 struct MOSDOpReply m
;
2787 u64 tid
= le64_to_cpu(msg
->hdr
.tid
);
2793 dout("%s msg %p tid %llu\n", __func__
, msg
, tid
);
2795 down_read(&osdc
->lock
);
2796 if (!osd_registered(osd
)) {
2797 dout("%s osd%d unknown\n", __func__
, osd
->o_osd
);
2798 goto out_unlock_osdc
;
2800 WARN_ON(osd
->o_osd
!= le64_to_cpu(msg
->hdr
.src
.num
));
2802 mutex_lock(&osd
->lock
);
2803 req
= lookup_request(&osd
->o_requests
, tid
);
2805 dout("%s osd%d tid %llu unknown\n", __func__
, osd
->o_osd
, tid
);
2806 goto out_unlock_session
;
2809 ret
= decode_MOSDOpReply(msg
, &m
);
2811 pr_err("failed to decode MOSDOpReply for tid %llu: %d\n",
2816 dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n",
2817 __func__
, req
, req
->r_tid
, m
.flags
, m
.pgid
.pool
, m
.pgid
.seed
,
2818 m
.epoch
, m
.retry_attempt
, le32_to_cpu(m
.replay_version
.epoch
),
2819 le64_to_cpu(m
.replay_version
.version
), m
.user_version
);
2821 if (m
.retry_attempt
>= 0) {
2822 if (m
.retry_attempt
!= req
->r_attempts
- 1) {
2823 dout("req %p tid %llu retry_attempt %d != %d, ignoring\n",
2824 req
, req
->r_tid
, m
.retry_attempt
,
2825 req
->r_attempts
- 1);
2826 goto out_unlock_session
;
2829 WARN_ON(1); /* MOSDOpReply v4 is assumed */
2832 if (!ceph_oloc_empty(&m
.redirect
.oloc
)) {
2833 dout("req %p tid %llu redirect pool %lld\n", req
, req
->r_tid
,
2834 m
.redirect
.oloc
.pool
);
2835 unlink_request(osd
, req
);
2836 mutex_unlock(&osd
->lock
);
2838 ceph_oloc_copy(&req
->r_t
.target_oloc
, &m
.redirect
.oloc
);
2839 req
->r_flags
|= CEPH_OSD_FLAG_REDIRECTED
;
2841 __submit_request(req
, false);
2842 goto out_unlock_osdc
;
2845 if (m
.num_ops
!= req
->r_num_ops
) {
2846 pr_err("num_ops %d != %d for tid %llu\n", m
.num_ops
,
2847 req
->r_num_ops
, req
->r_tid
);
2850 for (i
= 0; i
< req
->r_num_ops
; i
++) {
2851 dout(" req %p tid %llu op %d rval %d len %u\n", req
,
2852 req
->r_tid
, i
, m
.rval
[i
], m
.outdata_len
[i
]);
2853 req
->r_ops
[i
].rval
= m
.rval
[i
];
2854 req
->r_ops
[i
].outdata_len
= m
.outdata_len
[i
];
2855 data_len
+= m
.outdata_len
[i
];
2857 if (data_len
!= le32_to_cpu(msg
->hdr
.data_len
)) {
2858 pr_err("sum of lens %u != %u for tid %llu\n", data_len
,
2859 le32_to_cpu(msg
->hdr
.data_len
), req
->r_tid
);
2862 dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__
,
2863 req
, req
->r_tid
, req
->r_got_reply
, m
.result
, data_len
);
2865 already_acked
= req
->r_got_reply
;
2866 if (!already_acked
) {
2867 req
->r_result
= m
.result
?: data_len
;
2868 req
->r_replay_version
= m
.replay_version
; /* struct */
2869 req
->r_got_reply
= true;
2870 } else if (!(m
.flags
& CEPH_OSD_FLAG_ONDISK
)) {
2871 dout("req %p tid %llu dup ack\n", req
, req
->r_tid
);
2872 goto out_unlock_session
;
2875 if (done_request(req
, &m
)) {
2876 __finish_request(req
);
2877 if (req
->r_linger
) {
2878 WARN_ON(req
->r_unsafe_callback
);
2879 dout("req %p tid %llu cb (locked)\n", req
, req
->r_tid
);
2880 __complete_request(req
);
2884 mutex_unlock(&osd
->lock
);
2885 up_read(&osdc
->lock
);
2887 if (done_request(req
, &m
)) {
2888 if (already_acked
&& req
->r_unsafe_callback
) {
2889 dout("req %p tid %llu safe-cb\n", req
, req
->r_tid
);
2890 req
->r_unsafe_callback(req
, false);
2891 } else if (!req
->r_linger
) {
2892 dout("req %p tid %llu cb\n", req
, req
->r_tid
);
2893 __complete_request(req
);
2895 if (m
.flags
& CEPH_OSD_FLAG_ONDISK
)
2896 complete_all(&req
->r_safe_completion
);
2897 ceph_osdc_put_request(req
);
2899 if (req
->r_unsafe_callback
) {
2900 dout("req %p tid %llu unsafe-cb\n", req
, req
->r_tid
);
2901 req
->r_unsafe_callback(req
, true);
2910 complete_request(req
, -EIO
);
2912 mutex_unlock(&osd
->lock
);
2914 up_read(&osdc
->lock
);
2917 static void set_pool_was_full(struct ceph_osd_client
*osdc
)
2921 for (n
= rb_first(&osdc
->osdmap
->pg_pools
); n
; n
= rb_next(n
)) {
2922 struct ceph_pg_pool_info
*pi
=
2923 rb_entry(n
, struct ceph_pg_pool_info
, node
);
2925 pi
->was_full
= __pool_full(pi
);
2929 static bool pool_cleared_full(struct ceph_osd_client
*osdc
, s64 pool_id
)
2931 struct ceph_pg_pool_info
*pi
;
2933 pi
= ceph_pg_pool_by_id(osdc
->osdmap
, pool_id
);
2937 return pi
->was_full
&& !__pool_full(pi
);
2940 static enum calc_target_result
2941 recalc_linger_target(struct ceph_osd_linger_request
*lreq
)
2943 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2944 enum calc_target_result ct_res
;
2946 ct_res
= calc_target(osdc
, &lreq
->t
, &lreq
->last_force_resend
, true);
2947 if (ct_res
== CALC_TARGET_NEED_RESEND
) {
2948 struct ceph_osd
*osd
;
2950 osd
= lookup_create_osd(osdc
, lreq
->t
.osd
, true);
2951 if (osd
!= lreq
->osd
) {
2952 unlink_linger(lreq
->osd
, lreq
);
2953 link_linger(osd
, lreq
);
2961 * Requeue requests whose mapping to an OSD has changed.
2963 static void scan_requests(struct ceph_osd
*osd
,
2966 bool check_pool_cleared_full
,
2967 struct rb_root
*need_resend
,
2968 struct list_head
*need_resend_linger
)
2970 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
2972 bool force_resend_writes
;
2974 for (n
= rb_first(&osd
->o_linger_requests
); n
; ) {
2975 struct ceph_osd_linger_request
*lreq
=
2976 rb_entry(n
, struct ceph_osd_linger_request
, node
);
2977 enum calc_target_result ct_res
;
2979 n
= rb_next(n
); /* recalc_linger_target() */
2981 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
,
2983 ct_res
= recalc_linger_target(lreq
);
2985 case CALC_TARGET_NO_ACTION
:
2986 force_resend_writes
= cleared_full
||
2987 (check_pool_cleared_full
&&
2988 pool_cleared_full(osdc
, lreq
->t
.base_oloc
.pool
));
2989 if (!force_resend
&& !force_resend_writes
)
2993 case CALC_TARGET_NEED_RESEND
:
2994 cancel_linger_map_check(lreq
);
2996 * scan_requests() for the previous epoch(s)
2997 * may have already added it to the list, since
2998 * it's not unlinked here.
3000 if (list_empty(&lreq
->scan_item
))
3001 list_add_tail(&lreq
->scan_item
, need_resend_linger
);
3003 case CALC_TARGET_POOL_DNE
:
3004 check_linger_pool_dne(lreq
);
3009 for (n
= rb_first(&osd
->o_requests
); n
; ) {
3010 struct ceph_osd_request
*req
=
3011 rb_entry(n
, struct ceph_osd_request
, r_node
);
3012 enum calc_target_result ct_res
;
3014 n
= rb_next(n
); /* unlink_request(), check_pool_dne() */
3016 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
3017 ct_res
= calc_target(osdc
, &req
->r_t
,
3018 &req
->r_last_force_resend
, false);
3020 case CALC_TARGET_NO_ACTION
:
3021 force_resend_writes
= cleared_full
||
3022 (check_pool_cleared_full
&&
3023 pool_cleared_full(osdc
, req
->r_t
.base_oloc
.pool
));
3024 if (!force_resend
&&
3025 (!(req
->r_flags
& CEPH_OSD_FLAG_WRITE
) ||
3026 !force_resend_writes
))
3030 case CALC_TARGET_NEED_RESEND
:
3031 cancel_map_check(req
);
3032 unlink_request(osd
, req
);
3033 insert_request(need_resend
, req
);
3035 case CALC_TARGET_POOL_DNE
:
3036 check_pool_dne(req
);
3042 static int handle_one_map(struct ceph_osd_client
*osdc
,
3043 void *p
, void *end
, bool incremental
,
3044 struct rb_root
*need_resend
,
3045 struct list_head
*need_resend_linger
)
3047 struct ceph_osdmap
*newmap
;
3049 bool skipped_map
= false;
3052 was_full
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
);
3053 set_pool_was_full(osdc
);
3056 newmap
= osdmap_apply_incremental(&p
, end
, osdc
->osdmap
);
3058 newmap
= ceph_osdmap_decode(&p
, end
);
3060 return PTR_ERR(newmap
);
3062 if (newmap
!= osdc
->osdmap
) {
3064 * Preserve ->was_full before destroying the old map.
3065 * For pools that weren't in the old map, ->was_full
3068 for (n
= rb_first(&newmap
->pg_pools
); n
; n
= rb_next(n
)) {
3069 struct ceph_pg_pool_info
*pi
=
3070 rb_entry(n
, struct ceph_pg_pool_info
, node
);
3071 struct ceph_pg_pool_info
*old_pi
;
3073 old_pi
= ceph_pg_pool_by_id(osdc
->osdmap
, pi
->id
);
3075 pi
->was_full
= old_pi
->was_full
;
3077 WARN_ON(pi
->was_full
);
3080 if (osdc
->osdmap
->epoch
&&
3081 osdc
->osdmap
->epoch
+ 1 < newmap
->epoch
) {
3082 WARN_ON(incremental
);
3086 ceph_osdmap_destroy(osdc
->osdmap
);
3087 osdc
->osdmap
= newmap
;
3090 was_full
&= !ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
);
3091 scan_requests(&osdc
->homeless_osd
, skipped_map
, was_full
, true,
3092 need_resend
, need_resend_linger
);
3094 for (n
= rb_first(&osdc
->osds
); n
; ) {
3095 struct ceph_osd
*osd
= rb_entry(n
, struct ceph_osd
, o_node
);
3097 n
= rb_next(n
); /* close_osd() */
3099 scan_requests(osd
, skipped_map
, was_full
, true, need_resend
,
3100 need_resend_linger
);
3101 if (!ceph_osd_is_up(osdc
->osdmap
, osd
->o_osd
) ||
3102 memcmp(&osd
->o_con
.peer_addr
,
3103 ceph_osd_addr(osdc
->osdmap
, osd
->o_osd
),
3104 sizeof(struct ceph_entity_addr
)))
3111 static void kick_requests(struct ceph_osd_client
*osdc
,
3112 struct rb_root
*need_resend
,
3113 struct list_head
*need_resend_linger
)
3115 struct ceph_osd_linger_request
*lreq
, *nlreq
;
3118 for (n
= rb_first(need_resend
); n
; ) {
3119 struct ceph_osd_request
*req
=
3120 rb_entry(n
, struct ceph_osd_request
, r_node
);
3121 struct ceph_osd
*osd
;
3124 erase_request(need_resend
, req
); /* before link_request() */
3126 WARN_ON(req
->r_osd
);
3127 calc_target(osdc
, &req
->r_t
, NULL
, false);
3128 osd
= lookup_create_osd(osdc
, req
->r_t
.osd
, true);
3129 link_request(osd
, req
);
3130 if (!req
->r_linger
) {
3131 if (!osd_homeless(osd
) && !req
->r_t
.paused
)
3134 cancel_linger_request(req
);
3138 list_for_each_entry_safe(lreq
, nlreq
, need_resend_linger
, scan_item
) {
3139 if (!osd_homeless(lreq
->osd
))
3142 list_del_init(&lreq
->scan_item
);
3147 * Process updated osd map.
3149 * The message contains any number of incremental and full maps, normally
3150 * indicating some sort of topology change in the cluster. Kick requests
3151 * off to different OSDs as needed.
3153 void ceph_osdc_handle_map(struct ceph_osd_client
*osdc
, struct ceph_msg
*msg
)
3155 void *p
= msg
->front
.iov_base
;
3156 void *const end
= p
+ msg
->front
.iov_len
;
3157 u32 nr_maps
, maplen
;
3159 struct ceph_fsid fsid
;
3160 struct rb_root need_resend
= RB_ROOT
;
3161 LIST_HEAD(need_resend_linger
);
3162 bool handled_incremental
= false;
3163 bool was_pauserd
, was_pausewr
;
3164 bool pauserd
, pausewr
;
3167 dout("%s have %u\n", __func__
, osdc
->osdmap
->epoch
);
3168 down_write(&osdc
->lock
);
3171 ceph_decode_need(&p
, end
, sizeof(fsid
), bad
);
3172 ceph_decode_copy(&p
, &fsid
, sizeof(fsid
));
3173 if (ceph_check_fsid(osdc
->client
, &fsid
) < 0)
3176 was_pauserd
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
);
3177 was_pausewr
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
) ||
3178 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
3179 have_pool_full(osdc
);
3181 /* incremental maps */
3182 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
3183 dout(" %d inc maps\n", nr_maps
);
3184 while (nr_maps
> 0) {
3185 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
3186 epoch
= ceph_decode_32(&p
);
3187 maplen
= ceph_decode_32(&p
);
3188 ceph_decode_need(&p
, end
, maplen
, bad
);
3189 if (osdc
->osdmap
->epoch
&&
3190 osdc
->osdmap
->epoch
+ 1 == epoch
) {
3191 dout("applying incremental map %u len %d\n",
3193 err
= handle_one_map(osdc
, p
, p
+ maplen
, true,
3194 &need_resend
, &need_resend_linger
);
3197 handled_incremental
= true;
3199 dout("ignoring incremental map %u len %d\n",
3205 if (handled_incremental
)
3209 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
3210 dout(" %d full maps\n", nr_maps
);
3212 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
3213 epoch
= ceph_decode_32(&p
);
3214 maplen
= ceph_decode_32(&p
);
3215 ceph_decode_need(&p
, end
, maplen
, bad
);
3217 dout("skipping non-latest full map %u len %d\n",
3219 } else if (osdc
->osdmap
->epoch
>= epoch
) {
3220 dout("skipping full map %u len %d, "
3221 "older than our %u\n", epoch
, maplen
,
3222 osdc
->osdmap
->epoch
);
3224 dout("taking full map %u len %d\n", epoch
, maplen
);
3225 err
= handle_one_map(osdc
, p
, p
+ maplen
, false,
3226 &need_resend
, &need_resend_linger
);
3236 * subscribe to subsequent osdmap updates if full to ensure
3237 * we find out when we are no longer full and stop returning
3240 pauserd
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
);
3241 pausewr
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
) ||
3242 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
3243 have_pool_full(osdc
);
3244 if (was_pauserd
|| was_pausewr
|| pauserd
|| pausewr
)
3245 maybe_request_map(osdc
);
3247 kick_requests(osdc
, &need_resend
, &need_resend_linger
);
3249 ceph_monc_got_map(&osdc
->client
->monc
, CEPH_SUB_OSDMAP
,
3250 osdc
->osdmap
->epoch
);
3251 up_write(&osdc
->lock
);
3252 wake_up_all(&osdc
->client
->auth_wq
);
3256 pr_err("osdc handle_map corrupt msg\n");
3258 up_write(&osdc
->lock
);
3262 * Resubmit requests pending on the given osd.
3264 static void kick_osd_requests(struct ceph_osd
*osd
)
3268 for (n
= rb_first(&osd
->o_requests
); n
; ) {
3269 struct ceph_osd_request
*req
=
3270 rb_entry(n
, struct ceph_osd_request
, r_node
);
3272 n
= rb_next(n
); /* cancel_linger_request() */
3274 if (!req
->r_linger
) {
3275 if (!req
->r_t
.paused
)
3278 cancel_linger_request(req
);
3281 for (n
= rb_first(&osd
->o_linger_requests
); n
; n
= rb_next(n
)) {
3282 struct ceph_osd_linger_request
*lreq
=
3283 rb_entry(n
, struct ceph_osd_linger_request
, node
);
3290 * If the osd connection drops, we need to resubmit all requests.
3292 static void osd_fault(struct ceph_connection
*con
)
3294 struct ceph_osd
*osd
= con
->private;
3295 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
3297 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
3299 down_write(&osdc
->lock
);
3300 if (!osd_registered(osd
)) {
3301 dout("%s osd%d unknown\n", __func__
, osd
->o_osd
);
3305 if (!reopen_osd(osd
))
3306 kick_osd_requests(osd
);
3307 maybe_request_map(osdc
);
3310 up_write(&osdc
->lock
);
3314 * Process osd watch notifications
3316 static void handle_watch_notify(struct ceph_osd_client
*osdc
,
3317 struct ceph_msg
*msg
)
3319 void *p
= msg
->front
.iov_base
;
3320 void *const end
= p
+ msg
->front
.iov_len
;
3321 struct ceph_osd_linger_request
*lreq
;
3322 struct linger_work
*lwork
;
3323 u8 proto_ver
, opcode
;
3324 u64 cookie
, notify_id
;
3325 u64 notifier_id
= 0;
3326 s32 return_code
= 0;
3327 void *payload
= NULL
;
3328 u32 payload_len
= 0;
3330 ceph_decode_8_safe(&p
, end
, proto_ver
, bad
);
3331 ceph_decode_8_safe(&p
, end
, opcode
, bad
);
3332 ceph_decode_64_safe(&p
, end
, cookie
, bad
);
3333 p
+= 8; /* skip ver */
3334 ceph_decode_64_safe(&p
, end
, notify_id
, bad
);
3336 if (proto_ver
>= 1) {
3337 ceph_decode_32_safe(&p
, end
, payload_len
, bad
);
3338 ceph_decode_need(&p
, end
, payload_len
, bad
);
3343 if (le16_to_cpu(msg
->hdr
.version
) >= 2)
3344 ceph_decode_32_safe(&p
, end
, return_code
, bad
);
3346 if (le16_to_cpu(msg
->hdr
.version
) >= 3)
3347 ceph_decode_64_safe(&p
, end
, notifier_id
, bad
);
3349 down_read(&osdc
->lock
);
3350 lreq
= lookup_linger_osdc(&osdc
->linger_requests
, cookie
);
3352 dout("%s opcode %d cookie %llu dne\n", __func__
, opcode
,
3354 goto out_unlock_osdc
;
3357 mutex_lock(&lreq
->lock
);
3358 dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__
,
3359 opcode
, cookie
, lreq
, lreq
->is_watch
);
3360 if (opcode
== CEPH_WATCH_EVENT_DISCONNECT
) {
3361 if (!lreq
->last_error
) {
3362 lreq
->last_error
= -ENOTCONN
;
3363 queue_watch_error(lreq
);
3365 } else if (!lreq
->is_watch
) {
3366 /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */
3367 if (lreq
->notify_id
&& lreq
->notify_id
!= notify_id
) {
3368 dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq
,
3369 lreq
->notify_id
, notify_id
);
3370 } else if (!completion_done(&lreq
->notify_finish_wait
)) {
3371 struct ceph_msg_data
*data
=
3372 list_first_entry_or_null(&msg
->data
,
3373 struct ceph_msg_data
,
3377 if (lreq
->preply_pages
) {
3378 WARN_ON(data
->type
!=
3379 CEPH_MSG_DATA_PAGES
);
3380 *lreq
->preply_pages
= data
->pages
;
3381 *lreq
->preply_len
= data
->length
;
3383 ceph_release_page_vector(data
->pages
,
3384 calc_pages_for(0, data
->length
));
3387 lreq
->notify_finish_error
= return_code
;
3388 complete_all(&lreq
->notify_finish_wait
);
3391 /* CEPH_WATCH_EVENT_NOTIFY */
3392 lwork
= lwork_alloc(lreq
, do_watch_notify
);
3394 pr_err("failed to allocate notify-lwork\n");
3395 goto out_unlock_lreq
;
3398 lwork
->notify
.notify_id
= notify_id
;
3399 lwork
->notify
.notifier_id
= notifier_id
;
3400 lwork
->notify
.payload
= payload
;
3401 lwork
->notify
.payload_len
= payload_len
;
3402 lwork
->notify
.msg
= ceph_msg_get(msg
);
3407 mutex_unlock(&lreq
->lock
);
3409 up_read(&osdc
->lock
);
3413 pr_err("osdc handle_watch_notify corrupt msg\n");
3417 * Register request, send initial attempt.
3419 int ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
3420 struct ceph_osd_request
*req
,
3423 down_read(&osdc
->lock
);
3424 submit_request(req
, false);
3425 up_read(&osdc
->lock
);
3429 EXPORT_SYMBOL(ceph_osdc_start_request
);
3432 * Unregister a registered request. The request is not completed (i.e.
3433 * no callbacks or wakeups) - higher layers are supposed to know what
3434 * they are canceling.
3436 void ceph_osdc_cancel_request(struct ceph_osd_request
*req
)
3438 struct ceph_osd_client
*osdc
= req
->r_osdc
;
3440 down_write(&osdc
->lock
);
3442 cancel_request(req
);
3443 up_write(&osdc
->lock
);
3445 EXPORT_SYMBOL(ceph_osdc_cancel_request
);
3448 * @timeout: in jiffies, 0 means "wait forever"
3450 static int wait_request_timeout(struct ceph_osd_request
*req
,
3451 unsigned long timeout
)
3455 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
3456 left
= wait_for_completion_killable_timeout(&req
->r_completion
,
3457 ceph_timeout_jiffies(timeout
));
3459 left
= left
?: -ETIMEDOUT
;
3460 ceph_osdc_cancel_request(req
);
3462 /* kludge - need to to wake ceph_osdc_sync() */
3463 complete_all(&req
->r_safe_completion
);
3465 left
= req
->r_result
; /* completed */
3472 * wait for a request to complete
3474 int ceph_osdc_wait_request(struct ceph_osd_client
*osdc
,
3475 struct ceph_osd_request
*req
)
3477 return wait_request_timeout(req
, 0);
3479 EXPORT_SYMBOL(ceph_osdc_wait_request
);
3482 * sync - wait for all in-flight requests to flush. avoid starvation.
3484 void ceph_osdc_sync(struct ceph_osd_client
*osdc
)
3486 struct rb_node
*n
, *p
;
3487 u64 last_tid
= atomic64_read(&osdc
->last_tid
);
3490 down_read(&osdc
->lock
);
3491 for (n
= rb_first(&osdc
->osds
); n
; n
= rb_next(n
)) {
3492 struct ceph_osd
*osd
= rb_entry(n
, struct ceph_osd
, o_node
);
3494 mutex_lock(&osd
->lock
);
3495 for (p
= rb_first(&osd
->o_requests
); p
; p
= rb_next(p
)) {
3496 struct ceph_osd_request
*req
=
3497 rb_entry(p
, struct ceph_osd_request
, r_node
);
3499 if (req
->r_tid
> last_tid
)
3502 if (!(req
->r_flags
& CEPH_OSD_FLAG_WRITE
))
3505 ceph_osdc_get_request(req
);
3506 mutex_unlock(&osd
->lock
);
3507 up_read(&osdc
->lock
);
3508 dout("%s waiting on req %p tid %llu last_tid %llu\n",
3509 __func__
, req
, req
->r_tid
, last_tid
);
3510 wait_for_completion(&req
->r_safe_completion
);
3511 ceph_osdc_put_request(req
);
3515 mutex_unlock(&osd
->lock
);
3518 up_read(&osdc
->lock
);
3519 dout("%s done last_tid %llu\n", __func__
, last_tid
);
3521 EXPORT_SYMBOL(ceph_osdc_sync
);
3523 static struct ceph_osd_request
*
3524 alloc_linger_request(struct ceph_osd_linger_request
*lreq
)
3526 struct ceph_osd_request
*req
;
3528 req
= ceph_osdc_alloc_request(lreq
->osdc
, NULL
, 1, false, GFP_NOIO
);
3532 ceph_oid_copy(&req
->r_base_oid
, &lreq
->t
.base_oid
);
3533 ceph_oloc_copy(&req
->r_base_oloc
, &lreq
->t
.base_oloc
);
3535 if (ceph_osdc_alloc_messages(req
, GFP_NOIO
)) {
3536 ceph_osdc_put_request(req
);
3544 * Returns a handle, caller owns a ref.
3546 struct ceph_osd_linger_request
*
3547 ceph_osdc_watch(struct ceph_osd_client
*osdc
,
3548 struct ceph_object_id
*oid
,
3549 struct ceph_object_locator
*oloc
,
3550 rados_watchcb2_t wcb
,
3551 rados_watcherrcb_t errcb
,
3554 struct ceph_osd_linger_request
*lreq
;
3557 lreq
= linger_alloc(osdc
);
3559 return ERR_PTR(-ENOMEM
);
3561 lreq
->is_watch
= true;
3563 lreq
->errcb
= errcb
;
3565 lreq
->watch_valid_thru
= jiffies
;
3567 ceph_oid_copy(&lreq
->t
.base_oid
, oid
);
3568 ceph_oloc_copy(&lreq
->t
.base_oloc
, oloc
);
3569 lreq
->t
.flags
= CEPH_OSD_FLAG_WRITE
| CEPH_OSD_FLAG_ONDISK
;
3570 lreq
->mtime
= CURRENT_TIME
;
3572 lreq
->reg_req
= alloc_linger_request(lreq
);
3573 if (!lreq
->reg_req
) {
3578 lreq
->ping_req
= alloc_linger_request(lreq
);
3579 if (!lreq
->ping_req
) {
3584 down_write(&osdc
->lock
);
3585 linger_register(lreq
); /* before osd_req_op_* */
3586 osd_req_op_watch_init(lreq
->reg_req
, 0, lreq
->linger_id
,
3587 CEPH_OSD_WATCH_OP_WATCH
);
3588 osd_req_op_watch_init(lreq
->ping_req
, 0, lreq
->linger_id
,
3589 CEPH_OSD_WATCH_OP_PING
);
3590 linger_submit(lreq
);
3591 up_write(&osdc
->lock
);
3593 ret
= linger_reg_commit_wait(lreq
);
3595 linger_cancel(lreq
);
3603 return ERR_PTR(ret
);
3605 EXPORT_SYMBOL(ceph_osdc_watch
);
3610 * Times out after mount_timeout to preserve rbd unmap behaviour
3611 * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap
3612 * with mount_timeout").
3614 int ceph_osdc_unwatch(struct ceph_osd_client
*osdc
,
3615 struct ceph_osd_linger_request
*lreq
)
3617 struct ceph_options
*opts
= osdc
->client
->options
;
3618 struct ceph_osd_request
*req
;
3621 req
= ceph_osdc_alloc_request(osdc
, NULL
, 1, false, GFP_NOIO
);
3625 ceph_oid_copy(&req
->r_base_oid
, &lreq
->t
.base_oid
);
3626 ceph_oloc_copy(&req
->r_base_oloc
, &lreq
->t
.base_oloc
);
3627 req
->r_flags
= CEPH_OSD_FLAG_WRITE
| CEPH_OSD_FLAG_ONDISK
;
3628 req
->r_mtime
= CURRENT_TIME
;
3629 osd_req_op_watch_init(req
, 0, lreq
->linger_id
,
3630 CEPH_OSD_WATCH_OP_UNWATCH
);
3632 ret
= ceph_osdc_alloc_messages(req
, GFP_NOIO
);
3636 ceph_osdc_start_request(osdc
, req
, false);
3637 linger_cancel(lreq
);
3639 ret
= wait_request_timeout(req
, opts
->mount_timeout
);
3642 ceph_osdc_put_request(req
);
3645 EXPORT_SYMBOL(ceph_osdc_unwatch
);
3647 static int osd_req_op_notify_ack_init(struct ceph_osd_request
*req
, int which
,
3648 u64 notify_id
, u64 cookie
, void *payload
,
3651 struct ceph_osd_req_op
*op
;
3652 struct ceph_pagelist
*pl
;
3655 op
= _osd_req_op_init(req
, which
, CEPH_OSD_OP_NOTIFY_ACK
, 0);
3657 pl
= kmalloc(sizeof(*pl
), GFP_NOIO
);
3661 ceph_pagelist_init(pl
);
3662 ret
= ceph_pagelist_encode_64(pl
, notify_id
);
3663 ret
|= ceph_pagelist_encode_64(pl
, cookie
);
3665 ret
|= ceph_pagelist_encode_32(pl
, payload_len
);
3666 ret
|= ceph_pagelist_append(pl
, payload
, payload_len
);
3668 ret
|= ceph_pagelist_encode_32(pl
, 0);
3671 ceph_pagelist_release(pl
);
3675 ceph_osd_data_pagelist_init(&op
->notify_ack
.request_data
, pl
);
3676 op
->indata_len
= pl
->length
;
3680 int ceph_osdc_notify_ack(struct ceph_osd_client
*osdc
,
3681 struct ceph_object_id
*oid
,
3682 struct ceph_object_locator
*oloc
,
3688 struct ceph_osd_request
*req
;
3691 req
= ceph_osdc_alloc_request(osdc
, NULL
, 1, false, GFP_NOIO
);
3695 ceph_oid_copy(&req
->r_base_oid
, oid
);
3696 ceph_oloc_copy(&req
->r_base_oloc
, oloc
);
3697 req
->r_flags
= CEPH_OSD_FLAG_READ
;
3699 ret
= ceph_osdc_alloc_messages(req
, GFP_NOIO
);
3703 ret
= osd_req_op_notify_ack_init(req
, 0, notify_id
, cookie
, payload
,
3708 ceph_osdc_start_request(osdc
, req
, false);
3709 ret
= ceph_osdc_wait_request(osdc
, req
);
3712 ceph_osdc_put_request(req
);
3715 EXPORT_SYMBOL(ceph_osdc_notify_ack
);
3717 static int osd_req_op_notify_init(struct ceph_osd_request
*req
, int which
,
3718 u64 cookie
, u32 prot_ver
, u32 timeout
,
3719 void *payload
, size_t payload_len
)
3721 struct ceph_osd_req_op
*op
;
3722 struct ceph_pagelist
*pl
;
3725 op
= _osd_req_op_init(req
, which
, CEPH_OSD_OP_NOTIFY
, 0);
3726 op
->notify
.cookie
= cookie
;
3728 pl
= kmalloc(sizeof(*pl
), GFP_NOIO
);
3732 ceph_pagelist_init(pl
);
3733 ret
= ceph_pagelist_encode_32(pl
, 1); /* prot_ver */
3734 ret
|= ceph_pagelist_encode_32(pl
, timeout
);
3735 ret
|= ceph_pagelist_encode_32(pl
, payload_len
);
3736 ret
|= ceph_pagelist_append(pl
, payload
, payload_len
);
3738 ceph_pagelist_release(pl
);
3742 ceph_osd_data_pagelist_init(&op
->notify
.request_data
, pl
);
3743 op
->indata_len
= pl
->length
;
3748 * @timeout: in seconds
3750 * @preply_{pages,len} are initialized both on success and error.
3751 * The caller is responsible for:
3753 * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len))
3755 int ceph_osdc_notify(struct ceph_osd_client
*osdc
,
3756 struct ceph_object_id
*oid
,
3757 struct ceph_object_locator
*oloc
,
3761 struct page
***preply_pages
,
3764 struct ceph_osd_linger_request
*lreq
;
3765 struct page
**pages
;
3770 *preply_pages
= NULL
;
3774 lreq
= linger_alloc(osdc
);
3778 lreq
->preply_pages
= preply_pages
;
3779 lreq
->preply_len
= preply_len
;
3781 ceph_oid_copy(&lreq
->t
.base_oid
, oid
);
3782 ceph_oloc_copy(&lreq
->t
.base_oloc
, oloc
);
3783 lreq
->t
.flags
= CEPH_OSD_FLAG_READ
;
3785 lreq
->reg_req
= alloc_linger_request(lreq
);
3786 if (!lreq
->reg_req
) {
3792 pages
= ceph_alloc_page_vector(1, GFP_NOIO
);
3793 if (IS_ERR(pages
)) {
3794 ret
= PTR_ERR(pages
);
3798 down_write(&osdc
->lock
);
3799 linger_register(lreq
); /* before osd_req_op_* */
3800 ret
= osd_req_op_notify_init(lreq
->reg_req
, 0, lreq
->linger_id
, 1,
3801 timeout
, payload
, payload_len
);
3803 linger_unregister(lreq
);
3804 up_write(&osdc
->lock
);
3805 ceph_release_page_vector(pages
, 1);
3808 ceph_osd_data_pages_init(osd_req_op_data(lreq
->reg_req
, 0, notify
,
3810 pages
, PAGE_SIZE
, 0, false, true);
3811 linger_submit(lreq
);
3812 up_write(&osdc
->lock
);
3814 ret
= linger_reg_commit_wait(lreq
);
3816 ret
= linger_notify_finish_wait(lreq
);
3818 dout("lreq %p failed to initiate notify %d\n", lreq
, ret
);
3820 linger_cancel(lreq
);
3825 EXPORT_SYMBOL(ceph_osdc_notify
);
3828 * Return the number of milliseconds since the watch was last
3829 * confirmed, or an error. If there is an error, the watch is no
3830 * longer valid, and should be destroyed with ceph_osdc_unwatch().
3832 int ceph_osdc_watch_check(struct ceph_osd_client
*osdc
,
3833 struct ceph_osd_linger_request
*lreq
)
3835 unsigned long stamp
, age
;
3838 down_read(&osdc
->lock
);
3839 mutex_lock(&lreq
->lock
);
3840 stamp
= lreq
->watch_valid_thru
;
3841 if (!list_empty(&lreq
->pending_lworks
)) {
3842 struct linger_work
*lwork
=
3843 list_first_entry(&lreq
->pending_lworks
,
3847 if (time_before(lwork
->queued_stamp
, stamp
))
3848 stamp
= lwork
->queued_stamp
;
3850 age
= jiffies
- stamp
;
3851 dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__
,
3852 lreq
, lreq
->linger_id
, age
, lreq
->last_error
);
3853 /* we are truncating to msecs, so return a safe upper bound */
3854 ret
= lreq
->last_error
?: 1 + jiffies_to_msecs(age
);
3856 mutex_unlock(&lreq
->lock
);
3857 up_read(&osdc
->lock
);
3862 * Call all pending notify callbacks - for use after a watch is
3863 * unregistered, to make sure no more callbacks for it will be invoked
3865 void ceph_osdc_flush_notifies(struct ceph_osd_client
*osdc
)
3867 flush_workqueue(osdc
->notify_wq
);
3869 EXPORT_SYMBOL(ceph_osdc_flush_notifies
);
3871 void ceph_osdc_maybe_request_map(struct ceph_osd_client
*osdc
)
3873 down_read(&osdc
->lock
);
3874 maybe_request_map(osdc
);
3875 up_read(&osdc
->lock
);
3877 EXPORT_SYMBOL(ceph_osdc_maybe_request_map
);
3882 int ceph_osdc_init(struct ceph_osd_client
*osdc
, struct ceph_client
*client
)
3887 osdc
->client
= client
;
3888 init_rwsem(&osdc
->lock
);
3889 osdc
->osds
= RB_ROOT
;
3890 INIT_LIST_HEAD(&osdc
->osd_lru
);
3891 spin_lock_init(&osdc
->osd_lru_lock
);
3892 osd_init(&osdc
->homeless_osd
);
3893 osdc
->homeless_osd
.o_osdc
= osdc
;
3894 osdc
->homeless_osd
.o_osd
= CEPH_HOMELESS_OSD
;
3895 osdc
->linger_requests
= RB_ROOT
;
3896 osdc
->map_checks
= RB_ROOT
;
3897 osdc
->linger_map_checks
= RB_ROOT
;
3898 INIT_DELAYED_WORK(&osdc
->timeout_work
, handle_timeout
);
3899 INIT_DELAYED_WORK(&osdc
->osds_timeout_work
, handle_osds_timeout
);
3902 osdc
->osdmap
= ceph_osdmap_alloc();
3906 osdc
->req_mempool
= mempool_create_slab_pool(10,
3907 ceph_osd_request_cache
);
3908 if (!osdc
->req_mempool
)
3911 err
= ceph_msgpool_init(&osdc
->msgpool_op
, CEPH_MSG_OSD_OP
,
3912 PAGE_SIZE
, 10, true, "osd_op");
3915 err
= ceph_msgpool_init(&osdc
->msgpool_op_reply
, CEPH_MSG_OSD_OPREPLY
,
3916 PAGE_SIZE
, 10, true, "osd_op_reply");
3921 osdc
->notify_wq
= create_singlethread_workqueue("ceph-watch-notify");
3922 if (!osdc
->notify_wq
)
3923 goto out_msgpool_reply
;
3925 schedule_delayed_work(&osdc
->timeout_work
,
3926 osdc
->client
->options
->osd_keepalive_timeout
);
3927 schedule_delayed_work(&osdc
->osds_timeout_work
,
3928 round_jiffies_relative(osdc
->client
->options
->osd_idle_ttl
));
3933 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
3935 ceph_msgpool_destroy(&osdc
->msgpool_op
);
3937 mempool_destroy(osdc
->req_mempool
);
3939 ceph_osdmap_destroy(osdc
->osdmap
);
3944 void ceph_osdc_stop(struct ceph_osd_client
*osdc
)
3946 flush_workqueue(osdc
->notify_wq
);
3947 destroy_workqueue(osdc
->notify_wq
);
3948 cancel_delayed_work_sync(&osdc
->timeout_work
);
3949 cancel_delayed_work_sync(&osdc
->osds_timeout_work
);
3951 down_write(&osdc
->lock
);
3952 while (!RB_EMPTY_ROOT(&osdc
->osds
)) {
3953 struct ceph_osd
*osd
= rb_entry(rb_first(&osdc
->osds
),
3954 struct ceph_osd
, o_node
);
3957 up_write(&osdc
->lock
);
3958 WARN_ON(atomic_read(&osdc
->homeless_osd
.o_ref
) != 1);
3959 osd_cleanup(&osdc
->homeless_osd
);
3961 WARN_ON(!list_empty(&osdc
->osd_lru
));
3962 WARN_ON(!RB_EMPTY_ROOT(&osdc
->linger_requests
));
3963 WARN_ON(!RB_EMPTY_ROOT(&osdc
->map_checks
));
3964 WARN_ON(!RB_EMPTY_ROOT(&osdc
->linger_map_checks
));
3965 WARN_ON(atomic_read(&osdc
->num_requests
));
3966 WARN_ON(atomic_read(&osdc
->num_homeless
));
3968 ceph_osdmap_destroy(osdc
->osdmap
);
3969 mempool_destroy(osdc
->req_mempool
);
3970 ceph_msgpool_destroy(&osdc
->msgpool_op
);
3971 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
3975 * Read some contiguous pages. If we cross a stripe boundary, shorten
3976 * *plen. Return number of bytes read, or error.
3978 int ceph_osdc_readpages(struct ceph_osd_client
*osdc
,
3979 struct ceph_vino vino
, struct ceph_file_layout
*layout
,
3981 u32 truncate_seq
, u64 truncate_size
,
3982 struct page
**pages
, int num_pages
, int page_align
)
3984 struct ceph_osd_request
*req
;
3987 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino
.ino
,
3988 vino
.snap
, off
, *plen
);
3989 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, plen
, 0, 1,
3990 CEPH_OSD_OP_READ
, CEPH_OSD_FLAG_READ
,
3991 NULL
, truncate_seq
, truncate_size
,
3994 return PTR_ERR(req
);
3996 /* it may be a short read due to an object boundary */
3997 osd_req_op_extent_osd_data_pages(req
, 0,
3998 pages
, *plen
, page_align
, false, false);
4000 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
4001 off
, *plen
, *plen
, page_align
);
4003 rc
= ceph_osdc_start_request(osdc
, req
, false);
4005 rc
= ceph_osdc_wait_request(osdc
, req
);
4007 ceph_osdc_put_request(req
);
4008 dout("readpages result %d\n", rc
);
4011 EXPORT_SYMBOL(ceph_osdc_readpages
);
4014 * do a synchronous write on N pages
4016 int ceph_osdc_writepages(struct ceph_osd_client
*osdc
, struct ceph_vino vino
,
4017 struct ceph_file_layout
*layout
,
4018 struct ceph_snap_context
*snapc
,
4020 u32 truncate_seq
, u64 truncate_size
,
4021 struct timespec
*mtime
,
4022 struct page
**pages
, int num_pages
)
4024 struct ceph_osd_request
*req
;
4026 int page_align
= off
& ~PAGE_MASK
;
4028 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, &len
, 0, 1,
4030 CEPH_OSD_FLAG_ONDISK
| CEPH_OSD_FLAG_WRITE
,
4031 snapc
, truncate_seq
, truncate_size
,
4034 return PTR_ERR(req
);
4036 /* it may be a short write due to an object boundary */
4037 osd_req_op_extent_osd_data_pages(req
, 0, pages
, len
, page_align
,
4039 dout("writepages %llu~%llu (%llu bytes)\n", off
, len
, len
);
4041 req
->r_mtime
= *mtime
;
4042 rc
= ceph_osdc_start_request(osdc
, req
, true);
4044 rc
= ceph_osdc_wait_request(osdc
, req
);
4046 ceph_osdc_put_request(req
);
4049 dout("writepages result %d\n", rc
);
4052 EXPORT_SYMBOL(ceph_osdc_writepages
);
4054 int ceph_osdc_setup(void)
4056 size_t size
= sizeof(struct ceph_osd_request
) +
4057 CEPH_OSD_SLAB_OPS
* sizeof(struct ceph_osd_req_op
);
4059 BUG_ON(ceph_osd_request_cache
);
4060 ceph_osd_request_cache
= kmem_cache_create("ceph_osd_request", size
,
4063 return ceph_osd_request_cache
? 0 : -ENOMEM
;
4065 EXPORT_SYMBOL(ceph_osdc_setup
);
4067 void ceph_osdc_cleanup(void)
4069 BUG_ON(!ceph_osd_request_cache
);
4070 kmem_cache_destroy(ceph_osd_request_cache
);
4071 ceph_osd_request_cache
= NULL
;
4073 EXPORT_SYMBOL(ceph_osdc_cleanup
);
4076 * handle incoming message
4078 static void dispatch(struct ceph_connection
*con
, struct ceph_msg
*msg
)
4080 struct ceph_osd
*osd
= con
->private;
4081 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
4082 int type
= le16_to_cpu(msg
->hdr
.type
);
4085 case CEPH_MSG_OSD_MAP
:
4086 ceph_osdc_handle_map(osdc
, msg
);
4088 case CEPH_MSG_OSD_OPREPLY
:
4089 handle_reply(osd
, msg
);
4091 case CEPH_MSG_WATCH_NOTIFY
:
4092 handle_watch_notify(osdc
, msg
);
4096 pr_err("received unknown message type %d %s\n", type
,
4097 ceph_msg_type_name(type
));
4104 * Lookup and return message for incoming reply. Don't try to do
4105 * anything about a larger than preallocated data portion of the
4106 * message at the moment - for now, just skip the message.
4108 static struct ceph_msg
*get_reply(struct ceph_connection
*con
,
4109 struct ceph_msg_header
*hdr
,
4112 struct ceph_osd
*osd
= con
->private;
4113 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
4114 struct ceph_msg
*m
= NULL
;
4115 struct ceph_osd_request
*req
;
4116 int front_len
= le32_to_cpu(hdr
->front_len
);
4117 int data_len
= le32_to_cpu(hdr
->data_len
);
4118 u64 tid
= le64_to_cpu(hdr
->tid
);
4120 down_read(&osdc
->lock
);
4121 if (!osd_registered(osd
)) {
4122 dout("%s osd%d unknown, skipping\n", __func__
, osd
->o_osd
);
4124 goto out_unlock_osdc
;
4126 WARN_ON(osd
->o_osd
!= le64_to_cpu(hdr
->src
.num
));
4128 mutex_lock(&osd
->lock
);
4129 req
= lookup_request(&osd
->o_requests
, tid
);
4131 dout("%s osd%d tid %llu unknown, skipping\n", __func__
,
4134 goto out_unlock_session
;
4137 ceph_msg_revoke_incoming(req
->r_reply
);
4139 if (front_len
> req
->r_reply
->front_alloc_len
) {
4140 pr_warn("%s osd%d tid %llu front %d > preallocated %d\n",
4141 __func__
, osd
->o_osd
, req
->r_tid
, front_len
,
4142 req
->r_reply
->front_alloc_len
);
4143 m
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
, front_len
, GFP_NOFS
,
4146 goto out_unlock_session
;
4147 ceph_msg_put(req
->r_reply
);
4151 if (data_len
> req
->r_reply
->data_length
) {
4152 pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n",
4153 __func__
, osd
->o_osd
, req
->r_tid
, data_len
,
4154 req
->r_reply
->data_length
);
4157 goto out_unlock_session
;
4160 m
= ceph_msg_get(req
->r_reply
);
4161 dout("get_reply tid %lld %p\n", tid
, m
);
4164 mutex_unlock(&osd
->lock
);
4166 up_read(&osdc
->lock
);
4171 * TODO: switch to a msg-owned pagelist
4173 static struct ceph_msg
*alloc_msg_with_page_vector(struct ceph_msg_header
*hdr
)
4176 int type
= le16_to_cpu(hdr
->type
);
4177 u32 front_len
= le32_to_cpu(hdr
->front_len
);
4178 u32 data_len
= le32_to_cpu(hdr
->data_len
);
4180 m
= ceph_msg_new(type
, front_len
, GFP_NOIO
, false);
4185 struct page
**pages
;
4186 struct ceph_osd_data osd_data
;
4188 pages
= ceph_alloc_page_vector(calc_pages_for(0, data_len
),
4195 ceph_osd_data_pages_init(&osd_data
, pages
, data_len
, 0, false,
4197 ceph_osdc_msg_data_add(m
, &osd_data
);
4203 static struct ceph_msg
*alloc_msg(struct ceph_connection
*con
,
4204 struct ceph_msg_header
*hdr
,
4207 struct ceph_osd
*osd
= con
->private;
4208 int type
= le16_to_cpu(hdr
->type
);
4212 case CEPH_MSG_OSD_MAP
:
4213 case CEPH_MSG_WATCH_NOTIFY
:
4214 return alloc_msg_with_page_vector(hdr
);
4215 case CEPH_MSG_OSD_OPREPLY
:
4216 return get_reply(con
, hdr
, skip
);
4218 pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__
,
4226 * Wrappers to refcount containing ceph_osd struct
4228 static struct ceph_connection
*get_osd_con(struct ceph_connection
*con
)
4230 struct ceph_osd
*osd
= con
->private;
4236 static void put_osd_con(struct ceph_connection
*con
)
4238 struct ceph_osd
*osd
= con
->private;
4246 * Note: returned pointer is the address of a structure that's
4247 * managed separately. Caller must *not* attempt to free it.
4249 static struct ceph_auth_handshake
*get_authorizer(struct ceph_connection
*con
,
4250 int *proto
, int force_new
)
4252 struct ceph_osd
*o
= con
->private;
4253 struct ceph_osd_client
*osdc
= o
->o_osdc
;
4254 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
4255 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
4257 if (force_new
&& auth
->authorizer
) {
4258 ceph_auth_destroy_authorizer(auth
->authorizer
);
4259 auth
->authorizer
= NULL
;
4261 if (!auth
->authorizer
) {
4262 int ret
= ceph_auth_create_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
4265 return ERR_PTR(ret
);
4267 int ret
= ceph_auth_update_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
4270 return ERR_PTR(ret
);
4272 *proto
= ac
->protocol
;
4278 static int verify_authorizer_reply(struct ceph_connection
*con
, int len
)
4280 struct ceph_osd
*o
= con
->private;
4281 struct ceph_osd_client
*osdc
= o
->o_osdc
;
4282 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
4284 return ceph_auth_verify_authorizer_reply(ac
, o
->o_auth
.authorizer
, len
);
4287 static int invalidate_authorizer(struct ceph_connection
*con
)
4289 struct ceph_osd
*o
= con
->private;
4290 struct ceph_osd_client
*osdc
= o
->o_osdc
;
4291 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
4293 ceph_auth_invalidate_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
);
4294 return ceph_monc_validate_auth(&osdc
->client
->monc
);
4297 static int osd_sign_message(struct ceph_msg
*msg
)
4299 struct ceph_osd
*o
= msg
->con
->private;
4300 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
4302 return ceph_auth_sign_message(auth
, msg
);
4305 static int osd_check_message_signature(struct ceph_msg
*msg
)
4307 struct ceph_osd
*o
= msg
->con
->private;
4308 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
4310 return ceph_auth_check_message_signature(auth
, msg
);
4313 static const struct ceph_connection_operations osd_con_ops
= {
4316 .dispatch
= dispatch
,
4317 .get_authorizer
= get_authorizer
,
4318 .verify_authorizer_reply
= verify_authorizer_reply
,
4319 .invalidate_authorizer
= invalidate_authorizer
,
4320 .alloc_msg
= alloc_msg
,
4321 .sign_message
= osd_sign_message
,
4322 .check_message_signature
= osd_check_message_signature
,